Embedded locks with improved operating mechanisms for slats used in windows, doors, etc.

Abstract

This invention relates to an embedded lock with an operating mechanism for a closing slat of a window or door. The mechanism includes a housing, an operating slat, and a gear drive for actuating the operating slat. A gear is rotatable via a handle, wherein the operating slat includes a bracket with a rack that cooperates with the gear for moving the bracket within the housing. The gear ratio between the gear and the bracket is variable, the axis of the gear is off-center, and the gear has two equal radii at 0° and 180° rotations, a shortest radius between 180° and 360°, and a maximum radius between 0° and 180°, wherein the gear experiences a maximum rotation of 180° + / - 5°, and the rack (11) has a shape complementary to the 180° rotation of the gear.

Description

Technical Field

[0001] This invention relates to an embedded lock having an operating mechanism for slats used in windows, doors, etc. Background Technology

[0002] These recessed locks are typically constructed within the space between a fixed frame and a movable leaf-like structure such as a window or door, to convert the rotational movement of a window or door handle into linear movement of a locking mechanism (more specifically, a slat), which slides along the periphery of the leaf-like structure. These recessed locks are typically milled into the leaf-like profile.

[0003] In its simplest embodiment, the operating mechanism of the embedded lock may include a gear and a cooperating rack, wherein operating the handle causes the gear to rotate, which in turn causes the rack to move, thereby causing the hinge to move.

[0004] A gear rack is a rectangular bar with teeth on one side that are complementary to the teeth of a cooperating gear. By rotating the gear, the bar can move in the longitudinal direction.

[0005] Typically, one or more gear drives are used in such locks; rack and pinion drives are among the most common, converting rotary transmission into linear transmission. A characteristic of gear drives or rack and pinion drives is that the gear ratio is constant.

[0006] The gear ratio is the rotational ratio of the gear. A constant gear ratio in the gear causes a constant movement of the gear and rack.

[0007] This also means that the travel speed of the bracket is constant along its entire length. The rack's travel speed will be constant by utilizing the 180° rotation of the gear on the rack. As is known, this is achieved by a symmetrical gear (with a circular profile) that provides a central gear shaft.

[0008] A typical embedded lock with an operating mechanism for slats used in windows, doors, etc., has a gear drive for driving the slats, which includes a rotatable drive gear and a sliding bracket. The bracket is constructed as an elongated element with a rack and pinion at one end, which cooperates with the drive gear to slide the bracket.

[0009] The teeth of the gear rack engage with the teeth of the drive gear. The bracket is typically strip-shaped, in which all the teeth of the gear rack are arranged along a straight line and have a constant tooth roll.

[0010] The specific application of this type of lock is for window locks, such as rotating windows, rotating-tilting windows, and tilting-rotating windows. This type of lock is part of a system, such as a rotating-tilting system, which has corner drive mechanisms, locking points, etc.

[0011] For various reasons, a larger route or a larger straight travel is desirable, thereby, for example, compensating for route losses in various system components, or allowing for larger placement tolerances on locking elements.

[0012] When rotated 90° or 180°, the route is defined as the total travel. However, this total distance is fixed and specific to the lock.

[0013] In the example of a window, locking cams and locking elements are typically used to lock the window. The locking cam is usually located on a leaf-like structure and is driven by a lock to translate. The locking element is placed on the frame, preferably at a fixed distance from the locking cam. The position of the locking cam depends on many factors (often unknown), making the positioning of the locking element relative to the locking cam a task that usually requires a craftsman's skill to perform manually. However, it is desirable that these locking elements be positioned in preferred fixed positions independently of the locking cam using a CNC machine.

[0014] This can be achieved by using gears with a larger pitch circle diameter. However, due to the trend towards narrower profiles, the installation space for locks is becoming increasingly limited. Without additional work on narrow profiles and any glass retaining strips, locks with slightly larger paths appear unlikely to be installed in these profiles.

[0015] It is known that the aforementioned space between the leaf-shaped profile and the fixed frame and the movable leaf (in which the embedded lock will be assembled) is quite limited.

[0016] It is also known that within this limited space, it is difficult to achieve a sufficiently large stroke for the slats using a simple gear-rack transmission device.

[0017] GB2227273A, EP3287578A1, and DE2925147A1 describe known systems. The disadvantage of such known systems is that there is no optimal space-saving for the gears in the housing (more specifically, in the space intersecting the gear rack). Summary of the Invention

[0018] The object of this invention is to solve one or more of the aforementioned and / or other disadvantages by providing the features described in the claims.

[0019] The present invention provides an embedded lock with an operating mechanism for a closing slat of a window, door, etc., wherein the mechanism includes a housing, an operating bar, and a gear transmission device. The housing has a distinct longitudinal direction X-X', and the operating bar is slidable relative to the housing in an axial direction. The gear transmission device is used to drive the operating bar and the closing slat connected thereto. The gear transmission device includes a gear that can be rotated about its axis Y-Y' by a handle or another actuator. The operating bar includes a bracket that is provided with a gear rack that cooperates with the gear rack to slide the bracket within the housing. The embedded lock is characterized in that the gear ratio between the gear and the bracket is variable, wherein the axis (6) of the gear (7) is off-center, wherein the gear (7) has two equal radii (R1) at 0° and 180°, a shortest radius (R0) between 180° and 360° rotation and a maximum radius (R2) between 0° and 180° rotation, wherein the gear (7) experiences a maximum rotation of 180° + / - 5°, and the gear rack (11) has a shape complementary to the 180° rotation of the gear (7).

[0020] Therefore, the carrier has a variable travel speed. The gear ratio between the gear and the carrier is not constant.

[0021] The path is determined by the gear ratio. Variable travel speeds are determined by different gear ratios related to the angle of the gears. The gear ratio is variable because the gears rotate non-circularly about their axes.

[0022] The route is defined as the total distance traveled by rotating 90° or 180°. This distance is fixed and immutable. However, the speed at which the route is traveled is variable.

[0023] In a preferred embodiment of the embedded lock according to the invention, the travel of the bracket is different in a specific section of rotation or in multiple parts of the route.

[0024] The bracket does not have a tooth roll line, which is typically a straight line. The tooth roll line of a gear rack has a different shape than a single straight line.

[0025] The shape of the tooth pitch line of the roller is at least partially complementary to the shape of the tooth pitch line of the rack gear, and the position of the axis of the roller gear allows the teeth of the roller gear and the rack gear to cooperate while rotating about the axis.

[0026] In a particular embodiment of the embedded lock according to the invention, the toothed wheel is circular and has an eccentric axis.

[0027] In another embodiment of the embedded lock according to the invention, the toothed wheel is non-circular.

[0028] In a particular embodiment of the embedded lock according to the invention, the toothed wheel has a complex shape consisting of several circles, logarithmic spirals or other tooth pitch lines.

[0029] In a particular embodiment of the embedded lock according to the invention, the pitch line of the toothed teeth of the gear rack has a complex shape consisting of several straight and / or curved segments, which is complementary to the shape of the gear or the part of the gear that cooperates with the gear rack.

[0030] In a preferred embodiment of the embedded lock according to the invention, the embedded lock has symmetry about a 90° position around the toothed wheel, wherein the path accelerates in a first portion from 0° to 90° and decelerates in a second portion from 90° to 180°, the total path of the two portions being equivalent.

[0031] Therefore, the present invention relates to an embedded lock having symmetry at a 90° position around the toothed gear, wherein the path accelerates in a first portion from 0° to 90° and decelerates in a second portion, the total path of the two portions being identical, wherein the toothed gear has a maximum radius and a minimum radius, as well as two identical radii, distributed across 360°. The maximum radius is located at 90°, the two identical radii are located at 0° and 180°, and the minimum radius is located at 270°.

[0032] In another preferred embodiment of the embedded lock according to the invention, the embedded lock is symmetrical at a 90° position around the toothed wheel, wherein the path rotates differently between 90° and 180° than between 0° and 90°.

[0033] The toothed wheel is preferably partially rolled.

[0034] In one specific embodiment, the toothed gear is toothed over a wide angle spanning 180°.

[0035] In one particular embodiment, the toothed wheel is circular and has serrated teeth at its maximum radius relative to the eccentric axis of rotation and within a range of at most +90° and -90° therefrom.

[0036] In a particular embodiment of the embedded lock according to the invention, the gear has a variable gear ratio, making acceleration linear. Therefore, the bracket accelerates or decelerates linearly by rotating the gear at a constant angle.

[0037] A toothed gear consists of a pitch line composed of several tooth-rolling segments, each with its own external shape. Each segment includes a specific number of teeth.

[0038] In one specific embodiment, the toothed wheel includes one or more segments, wherein the pitch line is in the shape of a logarithmic spiral.

[0039] Using the embedded lock according to the invention, the path is greater than that obtained by a toothed wheel having a central axis mounted in the same space.

[0040] Due to the variable gear ratio, the operating torque is optimized, especially in the range where the highest operating torque is desired, the gear ratio ensures a reduction in operating force.

[0041] The gear rack extends in the longitudinal direction X-X' and has a flat side parallel to the longitudinal direction X-X' and a toothed opposite side. The flat side mates with a bracket and a hinge, thereby the toothed side represents an imaginary flat side passing through the middle of the tooth, wherein the vertical distance between the toothed flat side and the imaginary toothed side varies along the length of the gear rack and is complementary to the variable radius between the axis of rotation and the circumference of the gear, depending on the rotational position of the gear on the gear rack.

[0042] In a preferred embodiment of the embedded lock according to the invention, the gear rack is arc-shaped, or comprises several straight sections at a specific angle depending on the shape or segment of the gear. Each straight section of the gear rack has a specific number of teeth, depending on the number of teeth in the segment of the gear.

[0043] The roller cone can also be designed as a double roller cone.

[0044] The drive mechanism may include several gears.

[0045] The advantage of the embedded lock according to the invention is that it provides a more compact lock, wherein the total travel distance is somewhat larger than that of a typical embedded lock as described above. Embedded locks are known to have a theoretical travel of 34 mm at 180° rotation. Due to the use of a gear with a non-circular pitch line around its axis of rotation, the embedded lock of this embodiment, of the same size, has a larger travel distance of 36.8 mm at 180° rotation. Because the compact installation space can be maximized by utilizing the gear, the lock is compact.

[0046] A gear rack is a rectangular rod with teeth on one side, like a toothed wheel. A pinion (small toothed wheel) engaging these teeth allows the rod to move longitudinally.

[0047] They are rectangular rods with teeth on one side, like gears. By utilizing gears with complementary teeth (which engage with the teeth of the rack), the rack and pinion system is allowed to move in the longitudinal direction. Rack and pinion systems are used when rotational movement needs to be converted into linear travel.

[0048] The rack is defined by the tooth height and the tooth pitch.

[0049] The shape of a rack, more specifically, the shape of the side with teeth is the same as the other side. Using a known rectangular rack, the teeth follow the rectangular shape of the rod; in other words, the teeth are positioned in a straight line. Such racks cooperate with circular gears having a central axis. This results in a constant gear ratio between the gear and the rack. The rotation of the gear causes a constant travel of the rack because the distance the gear teeth travel on the rack is the same as the length of the rack itself. For most devices, the only requirement is that the transmission from rotational movement to travel must be constant.

[0050] The gear rack of the present invention has a non-linear tooth roll. Therefore, the gear travels a longer distance on the teeth of the gear rack, resulting in a larger rotation of the gear, while the gear rack covers the same straight travel distance. However, the gear ratio between the gear and the gear rack is not constant but variable. An advantage of this embodiment is that the gear rack can be mounted and moved within the same compact space as known gear racks. Therefore, the tooth roll bar can be longer than a conventional straight tooth roll bar.

[0051] The rack basically still has the shape of a rectangular bar, with the opposite sides of the teeth being straight, which causes the gear rack to produce a linear stroke.

[0052] The pitch line of the gear rack is not a straight line and can take any other shape, such as a combination of one or more straight sections or one or more curved sections. Therefore, the shape of the gear and the pitch line of the gear teeth are complementary. The pitch line of the gear has a complementary shape relative to the position of the gear's axis, such that the gear cooperates with the teeth of the gear rack as it rotates about its axis. For example, the gear can be a circle with an eccentric axis, or it can be a non-circular shape with its axis located elsewhere. Therefore, the gear ratio between the gear and the gear rack is variable or non-constant.

[0053] In a rack and pinion drive, the gear will typically experience a maximum rotation of 180°. Due to overrotation, this maximum rotation can slightly exceed 180°, with the gear experiencing 180° + / - 5° of rotation.

[0054] In a first embodiment of the embedded lock according to the invention, the lock has symmetry at a 90° position around the toothed gear, wherein a first portion of the path accelerates from 0° to 90° and a second portion decelerates from 90° to 180°. The travel speed is variable. The total path of the two portions is identical. For windows that open to the left or right respectively, the lock is installed in reverse (bottom-top symmetry).

[0055] The advantage is that it achieves a larger route in a small installation space.

[0056] When rotated 90°, this gear requires less space compared to a conventional system of circular gears centered on their central axis.

[0057] After all, the gear only rotates across a wide angle of 180°. The shortest distance from the offset from the central axis to the circumference of the gear is less than the distance from the central axis to the circumference. From a point on the circumference to the axis of rotation, no teeth are provided on the circumference spanning +90° and -90°.

[0058] Gears and racks convert the rotational movement of a gear into linear movement.

[0059] The toothed gear is a cylindrical toothed gear, in which the shape of the teeth is an involute of the base circle.

[0060] The teeth of a roller cone are straight (or partially beveled) and parallel to its axis. The teeth of a gear rack are also straight (or partially beveled) and complementary to the teeth of the roller cone.

[0061] During assembly, the gear and rack move in the same plane. A rightward rotation of the gear causes a linear rightward movement of the gear and rack, to which the bracket is attached, and vice versa for leftward movement.

[0062] In a conventional embedded lock with a constant gear ratio, the gear rack is flat and straight along its length, and the gears rotate symmetrically about their axis.

[0063] In this embedded lock, the axis of the gear is positioned off-center, and the gear rack has a shape that complements the preferred 180° rotational movement of the gear.

[0064] The roller cones are distributed, with their axes positioned off-center. Therefore, the roller cones have the longest and shortest radii, or radii every 90°, distributed across a 360° span, as well as two equal radii smaller than the longest. The longest radius is located at 90°, the two equal radii at 0° and 180°, and the shortest radius at 270°.

[0065] The gear is provided in a space that is sufficiently large for 180° rotation of the gear. However, the mounting space for such embodiments of gears and racks is minimal, and the mounting height of the gear in the housing is the sum of the maximum radius and the equivalent radius.

[0066] The rack and pinion are curved and include straight lines in different directions. The shape of the rack and pinion is complementary to that of the gears. When assembled, the rack and pinion provide the maximum distance (i.e., the maximum radius) to the center axis of the gear. The rack and pinion also provide distances to the left and right sides equivalent to two equal radii.

[0067] In another embodiment of the embedded lock according to the invention, there is also a variable travel speed, and the lock has symmetry about a 90° position around the toothed gear, wherein the route from 90° to 180° is different from the route from 0° to 90°.

[0068] The rotation can also exceed 180°. An intermediate gear can be provided to offer additional acceleration.

[0069] The idea is to use a smaller path for switching between rotational and tilt positions, and a larger path for closure, and therefore a larger positional tolerance for positioning the locking element.

[0070] The embedded lock according to the invention provides a smaller (respectively, a larger) path for switching between rotating and tilting positions, and provides a larger (respectively, a smaller) path in the closed region between the rotating (or tilting) position and the closed position.

[0071] Manufacturers have significant control over the switching position between rotation and tilt. Many factors influence the location of the locking point, factors beyond the manufacturer's control. By providing more options, manufacturers aim for robust systems where window builders can manipulate the locking elements in a fixed position without difficulty (e.g., via CNC machining).

[0072] One consequence of the fact that the route between 0° and 90° differs from the route between 90° and 180° is that bottom / top symmetry cannot be applied to windows opening to the left or right. If one or the same lock is used for both opening types, then the lock must have front / back symmetry.

[0073] By utilizing the same run-in at the locking element, providing a larger path within the closed region results in a larger operating torque. This is not compensated for by providing a single linear acceleration, but rather by providing a combination of three connecting components. Together, they achieve a trade-off between the operating force of the locking element and the positioning tolerances.

[0074] To achieve a variable travel speed with linear acceleration, a roller gear with a pitch circle having the shape of a logarithmic helical segment is used.

[0075] Variable travel speed also reduces operating force. By ensuring that the gear ratio is most advantageous at the moment of maximum load, the typical peak torque can be reduced when pulling a window or door during closing movement, which can result in a higher level of comfort when operating the window or door.

[0076] Based on the construction method described above, embedded locks can be built compactly while still providing a sufficiently large path. Attached Figure Description

[0077] To better explain the features of the invention, a preferred embodiment of the embedded lock according to the invention is described below with reference to the accompanying drawings, which are examples and not intended to be limiting in any way, wherein:

[0078] Figure 1 An exploded perspective view of an embedded lock with an operating mechanism according to the present invention is shown schematically.

[0079] Figure 2 schematically shows Figure 1 The assembled operating mechanism, in which a portion of the housing is omitted in the gears that rotate at 0°, 90°, and 180°;

[0080] Figure 3 shows a front view and a side view of an embedded lock with an operating mechanism according to the present invention;

[0081] Figure 4 is a perspective view of an embedded lock with an operating mechanism according to the present invention;

[0082] Figure 5 shows a cross-sectional view of an embedded lock with an operating mechanism according to the present invention;

[0083] Figure 6 shows another embodiment of the embedded lock with an operating mechanism according to the present invention, wherein the toothed gears are rotated by 0°, 90° and 180° respectively;

[0084] Figure 7 schematically shows a perspective view of the assembled operating mechanism of the embodiment in Figure 6;

[0085] Figure 8 Details of the toothed wheel and gear rack of the embodiment shown in Figure 6 are illustrated. Detailed Implementation

[0086] Figure 1 The embedded lock 1 of Figure 2 includes a housing 2 having a distinct longitudinal direction X-X', wherein the housing 2 is always two-piece in the illustrated embodiment, one part with the base 3 and the other part with the cover 4. The housing 2 is intended to be constructed in the space between the frame and the leaf, and in the leaf of the window or door that provides a recess, wherein the longitudinal direction X-X' of the housing 2 is parallel to the outer periphery of the frame or leaf.

[0087] In the aforementioned cover 4, a cylindrical recess is provided, in which the toothed wheel 7 is rotatably mounted about the geometric axis Y-Y'.

[0088] In a practical embodiment of the invention, the toothed wheel 7 is provided with a slightly square or rectangular recess 8, which cooperates with the pin of a window or door handle (not shown in the figure).

[0089] According to the invention, the recess 8, and more specifically, the gear 7 may be eccentric or off-center in the gear about its axis of rotation Y-Y'6.

[0090] In this embodiment, the toothed wheel is quasi-circular. The circumference of the toothed wheel 7 is partially circular and partially logarithmic spiral with 90° symmetry, at least for the portion of the circumference with teeth 9. The toothed circumference extends 180° relative to the axis of the toothed wheel, and the longest distance R2 from the axis to the circumference is located at 90°. The toothed wheel specifications are as follows: radius R1 = 10.2 mm at 0°; the portion from 0° to 63.45° has a logarithmic spiral shape, defined by the function r(θ) = 10.2*e^(0.19438*θ); radius R2 90° = 12.65 mm at the transition from 63.45° to the circular toothed wheel centered on the Y-Y' axis; symmetrical in distribution across 90°.

[0091] In the illustrated embodiment, the toothed wheel 7 is provided with teeth 9 that can interact with the operating bar 10, which is slidable relative to the housing 2 via the guide 15 of the base 3 and the guide 16 of the cover 4 and extends in the longitudinal direction X-X' of the housing 2.

[0092] The operating bar 10 is designed as an elongated element. The operating bar 10 comprises two parts 12 and 13, which are joined together by bolts or rivets passing through a hole 14. The operating bar 10 includes a gear rack 11, which cooperates with a gear 7.

[0093] Therefore, the gear rack is provided with teeth 17 ( Figure 1 (Not shown in the image).

[0094] The cover 4 of the outer casing 2 is installed between the two parts 12 and 13 of the operating bar 10.

[0095] The teeth 9 of the gear 7 engage with the teeth 17 of the gear rack 11, which is part of the operating bar 10 of the locking mechanism. The gear rack, bracket, and operating bar are integrally formed.

[0096] The shape of the gear rack 11 is complementary to the shape of the gear 7, which rotates 180° and moves in cooperation with the gear rack.

[0097] The use of bolts is not necessary for the normal operation of the embedded lock, and parts 12 and 13 can also be connected in other known ways to join the two parts together.

[0098] The outer casing 2 has a recess 5, which can accommodate the tap 5'.

[0099] Figure 2 schematically shows Figure 1 The assembled operating mechanism.

[0100] A more compact lock can be achieved by utilizing variable travel speed, resulting in a larger overall travel path. The theoretical travel path of a known lock at 180° rotation is 34mm; by applying variable travel speed, a travel path of 36.8mm at 180° can be obtained within the same dimensions.

[0101] The lock has symmetry around a 90° position. The first part of the path from 0° to 90° is acceleration, and the second part is deceleration. The total path of the two parts is identical. For windows that open to the left or right, the lock is installed in reverse (bottom-top symmetry).

[0102] The operating bar 10 is slidable within the housing 2. The operating bar 10 is drawn in an exploded view, making the gear rack 11 and its teeth 17 visible.

[0103] Figures 2A to 2C The interaction between the gear rack 11 and the gear 7 is shown continuously, with the gear rotating 180° to the right. Figure 2A It shows a 0° rotation. Figure 2B It shows a 90° rotation and Figure 2C It shows a 180° rotation.

[0104] The shape of the gear rack 11 matches the logarithmic helical portion and circular section of the gear 7. The gear rack 11 includes three straight sections, one of which rotates incrementally at an angle of 11° relative to the axis X-X', one of which is parallel, and one of which descends at an angle of 11° relative to the axis X-X'.

[0105] The distance from the gear rack 11 to the housing 2 is minimum at the 0° and 180° rotation positions of the gear 7, and maximum at 90°. At the 90° rotation position, the gear 7 protrudes furthest from the top of the housing, and the distance to the gear rack is largest. This explains the specific shape of the gear rack, which is suitable for the rotation of a gear with a distributed axis of rotation.

[0106] As shown below, the operation of the embedded lock according to the present invention is extremely simple.

[0107] When the gear 7 rotates (e.g., via the crankshaft), its cooperation with the gear rack 11 causes the latter to shift a length L in the longitudinal direction X-X' of the housing 2. This causes the operating bar 10 to move in the axial direction.

[0108] Figure 2A The diagram shows, for example, the starting position of the operating mechanism with the gear 7 rotating at 0°, where the gear 7 is at a horizontal height of radius R1 with the first tooth 26' acting on the first cut 26 of the gear rack 11 on the imaginary tooth line Z-Z'.

[0109] By rotating gear 7 90° to the right, the following was obtained: Figure 2B In this configuration, the gear 7 now acts on the central notch 27 of the rack 11 at a height of maximum radius R2 with its central tooth 27'. The rack 11 is thus moved to the right (arrow P) by half its length. Because R2 is greater than R1, the central notch 27 of the rack 11 is located at a certain distance from the imaginary tooth line Z-Z', further away from the housing; and the rack 11 has a shape 29 that curves above the imaginary tooth line Z-Z'.

[0110] Due to the further 90° rotation of gear 7 to the right, that is, due to the total 180° rotation of the gear, the following was achieved: Figure 2C The final position. The gear now acts on the final cut 28 of the rack 11 with tooth 28' at a height of radius R1. The rack 11 thus moves to the right (arrow P) by its full distance or maximum length. The final cut 28 of the rack 11 also lies on the imaginary tooth line Z-Z'.

[0111] The gear rack 11 is symmetrical about the left and right sides of the center cutout 27. The gears are symmetrical about the center teeth 27' on the maximum radius R2 at +90° and -90°.

[0112] The shortest radius R0 is located at 270° of rotation of the gear.

[0113] Compared to conventional embodiments, the travel of the operating bar 10 is greater in embodiments according to the present invention.

[0114] In a conventional embodiment, the gear ratio of the gear-rack pair (operating rack) is constant. The gear rack is linear.

[0115] In an embodiment according to the invention, the gears 7 are arranged off-center, and the gear ratio is variable. This is also evident in the specific shape of the rack 11, as explained above. It is not a straight line, but rather "curved," or a series of straight sections that together form a variable curved line. When rotating 180° on such a rack, the distance covered by the pitch line of the gears is greater than the distance covered by a straight rack. Therefore, the linear travel of the operating bar 10 is also larger. For this 180° rotation of the gear-rack combination, it must fit within the same space as known gear-rack combinations.

[0116] The advantage of the toothed wheel of the present invention is that, when used in the same available space, it covers a greater distance than a normal toothed wheel.

[0117] According to the invention, it is also possible to rotate the toothed wheel 7 in the opposite direction (to the left).

[0118] Due to the specific circumference and off-center rotation axis of gear 7, a more compact embedded lock is achieved. The gear rolls teeth at approximately 180°. Compared to a flat rack and pinion, the deeper cut shape of the rack and pinion provides a larger path within the locking area in a compact space.

[0119] Such embodiments for use with gears and racks have minimal mounting space, wherein the mounting height H of the gear within the housing is the sum of the maximum radius R2 and the equivalent radius R1. The mounting height H is perpendicular to the X-X' axis of the housing 2.

[0120] Figure 3 shows a front view of the embodiment in Figure 2. Figure 3A and Figure 3C ) and side view ( Figure 3B The position of the housing 2 relative to the operating bar 10 is shown rotated 90° by the gear 7. Figure 3A In the middle, and shown rotated 180°. Figure 3C middle.

[0121] Figure 4A and Figure 4B A perspective view of the operating bar 10 is shown, which is slidable relative to the housing 2 via guides 16 and 18 of the cover 4 of the housing 2.

[0122] Figure 5A and Figure 5B A cross-sectional side view of an embodiment of the embedded lock according to the present invention is shown. Figure 5A The gear is shown when rotated 90° (with) Figure 2B (Similar), and Figure 5B Shown with rotations of 0° and 180°.

[0123] The mounting space for the gear and rack is minimized, and the mounting height H of the gear in the housing is the sum of the maximum radius R2 and the equivalent radius R1.

[0124] The mounting height H of the gear in the housing 2 is thus maximized. Therefore, the mounting height is minimized, and the lock can be installed in a small space, which is smaller than the space required for a conventional lock with the same path.

[0125] At the 90° position of the roller ( Figure 5A This fully utilizes the maximum mounting space above the axis with a length R2. At the 0° and 180° positions of the gear ( Figure 5B It makes full use of the maximum installation space under the axis with length R1.

[0126] Figures 6 (exploded view) and 7 (closed view) show another embodiment of the embedded lock according to the invention, in which one of the toothed wheels has an off-center axis of rotation. Figure 8The details of the cooperation between gear 7 and gear rack 11 are shown.

[0127] As in the previous embodiment, the travel speed was variable, but now the route from 0° to 90° is different from the route from 90° to 180°. Therefore, a smaller route can be used to switch between rotating and tilting positions, and a larger route is used for closure, and thus a larger positional tolerance is used to position the locking element.

[0128] The difference between this embodiment and the previous embodiment is that the circumference of the roller is non-circular or symmetrical, thereby achieving a larger path in a compact space or even in a specific closed section.

[0129] The toothed wheel has several profile shapes on its circumference, each with its own center and radius.

[0130] Another difference from the aforementioned embodiments is that the shape of the gear rack 11 is more variable, or not as symmetrical as in the first embodiment. The gear rack 11 includes several straight tooth lines, each tooth line being positioned at a different angle relative to the longitudinal direction X-X'. Each tooth line on the gear rack 11 associated with teeth 19, 20, 21 corresponds to the cooperative shape of the circumferential portion of the gear 7.

[0131] As shown in Figure 6 and as... Figure 8 As shown in more detail, the roller cone has three external shapes: 22, 23, and 24. The roller cone in... Figure 6A Rotate 0° in the middle, Figure 6B Rotate 90° in the middle, and Figure 6C Rotate 180° in the middle.

[0132] The path between 0° and 90° is different from the path between 90° and 180°. This means that bottom-to-top symmetry cannot be applied to windows that open to the left or right. If you want to use the same lock for both types of opening, then the lock must be front-to-back symmetrical.

[0133] The first profile shape 22, which is closest to the central axis of rotation and has the smallest radius, includes three teeth. The subsequent second profile shape 23 has a larger radius and includes three teeth. The third profile shape 24 has the largest radius and includes six teeth. The gear specifications are described below.

[0134] The first outer shape 22 is circular, with a radius of 5.5 mm ranging from 0° to 96.37°, corresponding to crankshaft angles ranging from 116.4° to 180°.

[0135] The second external shape 23 has a logarithmic spiral shape on the gear from 96.37° to 189.09° (corresponding to crankshaft rotation from 55.2° to 116.4°), which is determined by the formula r(θ) = 5.5*e^(0.57735*θ).

[0136] The third profile shape 24 has a logarithmic spiral shape on the gear from 189.09° to 272.73° (corresponding to crankshaft rotation from 0° to 55.2°), which is determined by the formula r(θ)=7*e^(0.176327*θ).

[0137] The first outer shape 22 of the gear is parallel to the longitudinal direction X-X' of the lock. A portion of the second outer shape 23 is at a 30° angle relative to the axis X-X'. A portion of the third outer shape 24 is at a 10° angle relative to the axis X-X'.

[0138] The teeth of the first outer shape 22, the second outer shape 23 and the third outer shape 24 cooperate with the teeth 19, 20 and 21 of the gear rack 11, respectively.

[0139] exist Figure 8 In the diagram, A represents a tilt-turn route, and B represents a turn-close route (for a rotating or turning-tilt window) or a tilt-close route (for a tilt or tilt-turn window). The latter has a more progressive route.

[0140] Arrow C indicates the position of the maximum radius 25 relative to the off-center rotation axis 6 at the center. Arrow D indicates the instantaneous reduction in the relevant radius when the handle is lowered during closure.

[0141] The gear 7 is rotatable about its geometric axis (Y-Y') via a handle or another actuator. Although in Figure 1 In Figures 5 through 5, the square recess 8 is always shown in the gear 7 for attaching a handle, but it is also possible to rotate the gear 7 about its axis by another actuator, as shown in Figures 6 through 5. Figure 8 In another embodiment, a gear rotation of 272.7° is obtained for a gear ratio of 0.66 with a crankshaft rotation of 180°.

[0142] Therefore, it is possible that the gear 7 is driven by a system of one or more drive gears. In this way, the rotation of the latch is converted, for example, into the appropriate drive of the gear 7, which acts on the gear rack 11 of the operating bar 10.

[0143] For the gear 7, it is also possible to include two sets of teeth, with the two sets having the same number of teeth, and one set of teeth being slightly rotated relative to the other set of teeth at a specific angle, such that the two sets of teeth are not arranged in a straight line.

[0144] The teeth in both sets are preferably of the same size.

[0145] Then, by analogy, the bracket of the operating bar 10 provides two gear racks, the teeth of which move along the pitch line, and wherein each set of teeth of the gear 7 engages one of the aforementioned gear racks, wherein at least one tooth of one set and one tooth of the other set engage one rack and the other gear rack simultaneously, respectively.

[0146] The two sets of teeth can be separated from each other by a rib on the gear 7, which is slidable in a groove provided to the end between the gear rack.

[0147] Of course, it is also possible to provide ribs between the gear rack and to provide grooves to the gear 7.

[0148] In one example where the toothed wheel 7 includes two sets of seven teeth, a fourteen-tooth transition can be achieved, thus ensuring smoother movement of the bracket.

[0149] Of course, for a given number of gear drives, the number of teeth in each group can be reduced, allowing the teeth to be made larger and more robust, while still allowing smooth movement.

[0150] Needless to say, three or more sets of teeth may also be provided in the gear 7, which in this case cooperate with the corresponding gear rack 11 on the bracket of the operating bar 10.

[0151] This invention is by no means limited to the embodiments described by way of example and shown in the figures; rather, the embedded locks according to the invention can be made in all shapes and sizes while still falling within the scope of the invention.

Claims

1. An embedded lock (1) with an operating mechanism for a closing slat of a window, door, etc., wherein the operating mechanism comprises a housing (2) and an operating bar (10) and a gear drive, the housing (2) having a distinct longitudinal direction X-X', the operating bar (10) being axially slidable relative to the housing (2), the gear drive being used to drive the operating bar (10) and the closing slat connected thereto, wherein the gear drive comprises a gear (7) that rotates about its axis Y-Y' (6) by a handle or another actuator, wherein the operating bar (10) comprises a bracket provided with a gear rack (11) cooperating with the gear (7) to slide the bracket in the housing (2), wherein the gear ratio between the gear (7) and the bracket is variable, characterized in that, The axis (6) of the gear (7) is off-center, wherein the gear (7) has two equal radii (R1) at 0° and 180° rotation, a shortest radius (R0) between 180° and 360° and a maximum radius (R2) between 0° and 180°, wherein the gear (7) experiences a maximum rotation of 180° + / - 5°, the gear (7) has a complex shape consisting of several circles, logarithmic helices or other tooth pitch lines, and the gear rack (11) has a shape complementary to the 180° rotation of the gear (7).

2. The embedded lock (1) according to claim 1, characterized in that, The embedded lock has symmetry around the toothed wheel (7) at a 90° position, wherein the first part of the route accelerates from 0° to 90° and the second part decelerates, and the total route of the two parts is identical, wherein the toothed wheel (7) has a maximum radius (R2) and a minimum radius (R0) and two identical radii (R1) in a distribution spanning 3600°.

3. The embedded lock (1) according to claim 2, characterized in that, The maximum radius (R2) is located at 90°, the two equal radii (R1) are located at 0° and 180°, and the shortest radius (R0) is located at 270°.

4. The embedded lock (1) according to claim 1, characterized in that, The tooth pitch line of the gear rack (11) has a complex shape consisting of several straight and / or curved sections.

5. The embedded lock (1) according to claim 1, characterized in that, The toothed wheel (7) is partially toothed.

6. The embedded lock (1) according to claim 5, characterized in that, The toothed rollers (7) are toothed with a 180° distribution.

7. The embedded lock (1) according to claim 5, characterized in that, The toothed wheel (7) is toothed at its maximum radius (R2) relative to the eccentric axis of rotation (6) and within a range of +90° and -90° when the handle is rotated.

8. The embedded lock (1) according to any one of claims 2 to 7, characterized in that, The gear rack (11) is symmetrical about the left and right sides of the central cut (27), and a) the gear wheel (7) acts on the first cut (26) of the gear rack at the horizontal height of the first tooth (26') and a radius R1 on the imaginary tooth line Z-Z'; b) when the gear wheel (7) is rotated 90° to the right, the gear wheel acts on the central cut (27) of the gear rack (11) at the height of the central tooth (27') and a maximum radius R2, wherein the gear rack (11) Move to the right (arrow P) by half its length; wherein R2 is greater than R1, and the central cut (27) of the gear rack is located at a certain distance from the imaginary tooth line Z-Z'; c) when the gear (7) is rotated further to the right by 90°, the gear acts on the last cut (28) of the gear rack (11) at the height of the last tooth (28') and another radius R1 on the imaginary tooth line Z-Z', wherein the gear rack (11) moves to the right (arrow P) by its maximum length.

9. The embedded lock (1) according to claim 8, characterized in that, The mounting height (H) of the toothed wheel (7) in the housing (2) is the minimum and is equal to the sum of the maximum radius (R2) and the equivalent radius (R1).

10. The embedded lock (1) according to claim 1, characterized in that, The bracket accelerates or decelerates linearly as the toothed wheel (7) rotates at a constant angle.

11. The embedded lock (1) according to claim 1, characterized in that, The toothed wheel (7) is quasi-circular, with its circumference being partially circular and partially logarithmic spiral, exhibiting symmetry in a distribution spanning 90°, and at least in the portion spanning the circumference where the teeth (9) are provided, which extends 180° relative to the axis (6) of the toothed wheel, with a maximum distance of 90° from the axis (6) to the circumference.

12. The embedded lock (1) according to claim 11, characterized in that, The shape of the gear rack (11) is adapted to the logarithmic helical portion and the circular section of the gear (7), wherein the gear rack (11) comprises three straight portions, one portion of which rotates upward at an angle of 11° relative to the axis X-X', one portion is parallel, and one portion descends at an angle of 11° relative to the axis X-X'.

13. The embedded lock (1) according to claim 2, characterized in that, The path is greater than the path obtained with a toothed wheel having a central axis that fits in the same space.

14. The embedded lock (1) according to claim 1, wherein the gear rack (11) extends in the longitudinal direction X-X' and has a flat side parallel to the longitudinal direction X-X' and an opposite side provided with teeth (17), the flat side cooperating with the bracket and the hinge, wherein the side with teeth represents an imaginary flat side passing through the center of the teeth (17), characterized in that, The vertical distance between the flat side and the imaginary side of the tooth (17) varies along the length of the gear rack (11) and is complementary to the variable radius between the axis (6) and the circumference of the tooth (7), depending on the rotational position of the tooth (7) on the gear rack (11).

15. The embedded lock (1) according to claim 1, characterized in that, The roller (7) is designed as a double roller.

16. The embedded lock (1) according to claim 1, characterized in that, The operating mechanism includes several toothed wheels.

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