Furniture product including a mechanical locking device

Abstract

The present invention relates to a furniture product comprising a first joining element (10) having a first mounting surface (15), a second joining element (20) having a second mounting surface (25), and a mechanical locking device. The mechanical locking device includes at least two dowels (31) protruding at a first angle (a1) from the first mounting surface (15) and at least two insertion recesses (32) extending into the second mounting surface (25). The at least two insertion recesses (32) are configured to receive the at least two dowels (31). The mechanical locking device further includes a compressible locking element (40) that can be compressed within a first joining element recess (41) of the first mounting surface (15). The compressible locking element partially protrudes from the first mounting surface (15) in an uncompressed state. The mechanical locking device further includes a locking recess (50) of the second mounting surface (25) configured to receive the compressible locking element (40).

Description

Technical Field

[0001] The present invention relates to a fitting product.

Background Art

[0002] As disclosed in International Publication No. 2015 / 038059, a furniture product provided with a mechanical locking device is known in the art. The furniture product includes a first panel connected to a second panel by a mechanical locking device including a rod-shaped element, an insertion groove, a locking groove, and a locking device.

[0003] There is a need for a fitting product that more strongly fixes the joining element.

Summary of the Invention

[0004] One of the objects of the present invention is to at least partially alleviate or reduce the drawbacks of the prior art.

[0005] One of the objects of the present invention is to provide a fitting product having a stronger and more versatile locking mechanism.

[0006] According to a first aspect of the present invention, there is provided a fitting product including a first joining element having a first edge surface, a second edge surface, and a first joining element surface, wherein the second edge surface is adjacent to the first edge surface, and the first mounting surface is at least a part of the first edge surface or the second edge surface. The fitting product further includes a second joining element having a second joining element surface, a third joining element surface, a third edge surface, and a fourth edge surface, wherein the second mounting surface is at least a part of the second joining element surface, the third edge surface, or the fourth edge surface, the first mounting surface faces the second mounting surface and is configured to be locked with the second mounting surface. The fitting product further includes a mechanical locking device including at least two dowels protruding from the first mounting surface at a first angle and at least two insertion recesses extending into the second mounting surface, wherein the at least two insertion recesses are configured to receive the at least two dowels. The mechanical locking device further includes a compressible locking element partially disposed within a first joining element recess of the first mounting surface, wherein the side surface of the joining element recess extends at a third angle (a3) with respect to the first mounting surface, and the non-compressed compressible locking element partially protrudes from the first mounting surface. The mechanical locking device further includes a locking recess of the second mounting surface configured to receive the compressible locking element. The locking surface of the locking recess in the locked position is configured to cooperate with the compressible locking element in a direction within the plane of the first mounting surface to lock the first joining element with respect to the second joining element. The inclination of the at least two dowels prevents displacement of the first joining element with respect to the second joining element along the normal direction of the first mounting surface. The compressible locking element is disposed between the at least two dowels in a direction perpendicular to the normal direction, the first angle (a1) is in the range of 20 to 75 degrees, and the third angle (a3) is in the range of 70 to 110 degrees. By disposing the compressible locking element between the at least two dowels in a direction perpendicular to the normal direction, a stronger lock becomes possible. Thereby, a larger first angle a1 and / or a second angle, that is, dowels with less inclination can be used.For example, when a compressible locking element is between at least two pins, one of the at least two pins can be arranged closer to the edge of the first mounting surface. Each inclined pin prevents the displacement of the first joining element relative to the second joining element along the normal direction of the first mounting surface, that is, each inclined pin presses the joining elements tightly together. Therefore, arranging the pin near the edge of the first mounting surface can prevent the generation of a gap. Such a gap may be caused as a result of an external force and / or a force exerted by the compressible element.

[0007] One or more of the at least two pins can be arranged less than 125 mm, for example less than 75 mm, for example less than 50 mm from any edge of the first mounting surface. The edge can be any edge of the first edge surface, but typically it is the side edge closest to the pin, and the pin is inclined away from this side edge. The position of the pin can be measured as the distance between the center line of the pin inclined away from the side edge and the side edge.

[0008] In this specification, the first joining element recess means a recess within the first joining element.

[0009] The fitting product may be a piece of furniture, a door frame or a window frame.

[0010] The first joining element and / or the second joining element may be a panel or a board.

[0011] The at least two insertion recesses extend into the second mounting surface at a second angle (a2) from the second mounting surface, and the difference between the first angle (a1) and the second angle (a2) may be in the range of 0 to 6 degrees, for example in the range of 1 to 5 degrees, for example in the range of 2 to 4 degrees, for example about 3 degrees.

[0012] The compressible locking element may be arranged less than 30 mm, for example less than 20 mm, for example less than 10 mm, for example less than 5 mm from the straight line between the at least two pins.

[0013] The first angle a1 may be in the range of 30 to 60 degrees, for example in the range of 35 to 55 degrees, for example in the range of 40 to 50 degrees, for example about 45 degrees.

[0014] The third angle a3 may be in the range of 75 to 105 degrees, for example in the range of 80 to 100 degrees, for example in the range of 85 to 95 degrees, for example about 90 degrees.

[0015] The difference between the angles a1 and a3 may be at least 10 degrees, for example at least 20 degrees.

[0016] The difference between the angles a1 and a3 may be 10 to 100 degrees, for example 20 to 70 degrees, for example 30 to 60 degrees, for example 40 to 50 degrees, for example about 45 degrees or about 42 degrees.

[0017] The compressible locking element may be configured to be disposed substantially within the first joining element recess in a deflected / compressed state.

[0018] The compressible locking element may be configured to be partially displaced into the locking recess in the locked position.

[0019] At least two insertion recesses may be blind holes, for example holes such as blind drill holes. The first joining element recess may be a blind hole, for example a hole such as a blind drill hole. The locking recess may be a blind hole, for example a hole such as a blind drill hole. At least one of the at least two insertion recesses, the first joining element recess, and the locking recess may be a blind hole, for example a hole such as a blind drill hole.

[0020] The fitting product may further include one or more additional dowels protruding from the first mounting surface at a first angle (a1) and one or more additional insertion recesses extending into the second mounting surface from the second mounting surface at a second angle (a2) and configured to receive the one or more additional dowels.

[0021] The fitting product may further include one or more additional compressible lock elements partially disposed within an additional first joining element recess, and one or more additional lock recesses on a second mounting surface configured to receive the additional compressible lock elements.

[0022] The compressible lock element may include a spring and a lock pin. Typically, one end of the compressible lock element includes the lock pin.

[0023] The lock pin may include an end portion having a tapered shape, such as a truncated conical shape.

[0024] The fitting product may include a release surface provided with a release hole that reaches the compressible lock element. The compressible lock element may cooperate with a release device through the release hole and be configured such that its end portion is displaced in the direction of the bottom of the first joining element recess.

[0025] The release hole may be provided on any surface less than 10 cm, such as less than 8 cm, such as less than 6 cm, such as less than 5 cm, such as less than 4 cm, such as less than 3 cm, such as less than 2 cm, such as less than 1 cm, from the compressible lock element. The release hole may be provided on a surface selected from the group consisting of the first joining element surface, the surface opposite the first joining element surface, and the third joining element surface. The release hole may be provided so as not to intersect any dowels, such as at least two dowels.

[0026] The release hole may reach the upper surface of the compressible lock element, the end portion (lower end portion) of the spring, the lowermost portion of the compressible lock element, or the inner inclined surface within the radial recess of the lock pin.

[0027] The lock pin may include a radial recess that extends through the lock pin optionally.

[0028] The opening of the radial recess may be large on one side of the lock pin and have an inner inclined surface toward the other opening.

[0029] The spring may be a static load spring.

[0030] The spring may include a U-shaped portion and an adjacent U-shaped portion, and the legs of the U-shaped portion may be connected to the legs of the adjacent U-shaped portion.

[0031] The spring may be configured such that two adjacent U-shaped portions approach or contact each other in a compressed state as compared to an uncompressed state.

[0032] The U-shaped portion may be a circular region extending more than 180 degrees.

[0033] The thickness of the U-shaped portion at the legs of the U-shaped portion may be smaller than the thickness of the U-shaped portion closer to the bottom of the U-shaped portion.

[0034] The shape along the spring may be such that the surface surrounding the outer portion of the U-shaped portion is cylindrical.

[0035] The diameter of the cylindrical surface may be larger in the uncompressed state of the compressible lock element than in the maximum compressed state.

[0036] The end portion may include a notch area.

[0037] The spring may connect the first element and the second element, and each element includes a disc-shaped portion and two opposing bridging struts with respect to the center of the disc-shaped portion. The two opposing bridging struts may be arranged at an equal distance from the center of the disc-shaped portion and on the same side. The elements having struts may be arranged such that the disc-shaped portions are parallel to each other. The first element may be connected to the second element by the struts of the first element in a state where the struts of the first element are directed towards the second element and the struts of the second element are directed away from the first element. The line between the struts of the first element may be perpendicular to the line between the struts of the second element when viewed axially.

[0038] The disc-shaped portion may be circular.

[0039] The disc-shaped portion may have a circular opening disposed at the center.

[0040] The disc-shaped portion may be made of an elastic material.

[0041] The spring may include at least four elements selected from the first element and the second element.

[0042] The axial distance between two adjacent disc-shaped portions may be greater than the axial thickness of a single disc-shaped portion.

[0043] Each dowel (31, 33) may include a lower side and an upper side, and the first angle (a1) may be the angle between the lower side and the first mounting surface.

[0044] The joining element recess may include opposing side surfaces and a bottom surface, and the bottom surface extends between the side surfaces and the opposing side surfaces.

[0045] The compressible locking element may be configured to be compressed against the bottom surface of the joining element recess during assembly of the first joining element and the second joining element.

[0046] According to a second aspect of the present invention, there is provided a fitting product including a first joining element having a first mounting surface and a second joining element having a second mounting surface, wherein the first mounting surface faces the second mounting surface and is configured to be locked to the second mounting surface. The fitting product further includes a mechanical locking device including at least two dowels protruding from the first mounting surface at a first angle and at least two insertion recesses extending into the second mounting surface, the at least two insertion recesses being configured to receive the at least two dowels. The mechanical locking device further includes a compressible locking element partially disposed within a first joining element recess of the first mounting surface, the side surface of the joining element recess extending at a third angle (a3) with respect to the first mounting surface, and the compressible locking element in an uncompressed state partially protruding from the first mounting surface. The mechanical locking device further includes a locking recess of the second mounting surface configured to receive the compressible locking element. The locking surface of the locking recess in the locked position is configured to cooperate with the compressible locking element in a direction within the plane of the first mounting surface to lock the first joining element to the second joining element. The inclination of the at least two dowels prevents displacement of the first joining element relative to the second joining element along the normal direction of the first mounting surface. The compressible locking element is disposed between the at least two dowels in a direction perpendicular to the normal direction, the first angle (a1) is in the range of 20 to 75 degrees, and the third angle (a3) is in the range of 70 to 110 degrees.

[0047] Embodiments of the first aspect of the present invention are also applicable to the second aspect of the present invention.

[0048] According to a third aspect of the present invention, a first joining element having a first edge surface, a second edge surface, and a first joining element surface, wherein the second edge surface is adjacent to the first edge surface, and the first mounting surface is at least a part of the first edge surface or the second edge surface, the first joining element, A second joining element having a second joining element surface, a third joining element surface, a third edge surface, and a fourth edge surface, wherein the second mounting surface is at least part of the second joining element surface, the third edge surface or the fourth edge surface, and the first mounting surface faces the second mounting surface and is configured to be locked to the second mounting surface, the second joining element; At least two dowels protruding from the second mounting surface at a first angle; At least two insertion recesses extending into the first mounting surface, the at least two insertion recesses being configured to receive the at least two dowels, the mechanical locking device including the at least two insertion recesses, a furniture product including; A compressible locking element partially disposed within a first joining element recess of the first mounting surface, the side surfaces of the joining element recess extending at a third angle with respect to the first mounting surface, the compressible locking element in an uncompressed state protruding partially from the first mounting surface, the compressible locking element and a locking recess of the second mounting surface, configured to receive the compressible locking element. The locking surface of the locking recess in the locked position cooperates with the compressible locking element to lock the first joining element to the second joining element in a direction within the plane of the first mounting surface, and the inclination of the at least two dowels prevents displacement of the first joining element relative to the second joining element along the normal direction of the first mounting surface. A furniture product is disclosed. The compressible locking element is disposed between the at least two dowels in a direction perpendicular to the aforementioned normal direction, the first angle is in the range of 20 to 75 degrees, and the third angle is in the range of 70 to 110 degrees. The difference between the first aspect and the third aspect is that the dowel protrudes from the second joining element. Embodiments and examples of the third aspect are substantially similar to the embodiments and examples of the first aspect, and the embodiments and examples of the first aspect are referred to. For example, the following embodiments are conceivable.

[0049] The compressible locking element may be arranged, at the locking position, less than 30 mm, for example less than 20 mm, for example less than 10 mm, for example less than 5 mm from the straight line between at least two studs.

[0050] At least one of the at least two insertion recesses, the first joining element recess, and the locking recess may be a blind hole, such as a blind drill hole.

[0051] The compressible locking element may include a spring and a locking pin. Typically, one end of the compressible locking element includes the locking pin.

[0052] The locking pin may include an end portion having a tapered shape, such as a truncated conical shape.

[0053] The fitting product may include a release surface provided with a release hole leading to the compressible locking element. The compressible locking element may be configured to cooperate with a release device via the release hole and displace the end portion in the direction of the bottom of the first joining element recess.

[0054] The release hole may be provided on any surface less than 10 cm, for example less than 8 cm, for example less than 6 cm, for example less than 5 cm, for example less than 4 cm, for example less than 3 cm, for example less than 2 cm, for example less than 1 cm from the compressible locking element. The release hole may be provided on a surface selected from the group consisting of the first joining element surface, the surface facing the first joining element surface, and the third joining element surface. The release hole may be provided so as not to intersect any stud such as at least two studs.

[0055] The release hole may reach the upper surface of the compressible locking element, the end portion (lower end portion) of the spring, the lowermost portion of the compressible locking element, or the inner inclined surface within the radial recess of the locking pin.

[0056] The locking pin may include a radial recess extending through the locking pin optionally.

[0057] According to a fourth aspect of the present invention, furniture including a hardware product according to the present disclosure is disclosed. The furniture may be a bookshelf, a cupboard, a window frame, a door frame, or the like.

[0058] These and other aspects, features, and advantages enabled by embodiments of the present invention will become apparent and be elucidated from the following description of embodiments of the present invention with reference to the accompanying drawings.

Brief Description of the Drawings

[0059]

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Figure 21B

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Embodiments for Carrying Out the Invention

[0060] Next, specific embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments of the fitting products presented herein. Rather, these embodiments are provided to fully cover and complete the present disclosure and to fully convey the scope of the present invention to those skilled in the art. The terms used in the detailed description of the embodiments illustrated in the accompanying drawings are not intended to limit the present invention. In the drawings and the description, like numbers refer to like elements.

[0061] Embodiments of the fitting product according to the present disclosure or parts thereof are shown in FIGS. 1 to 33.

[0062] Figures 1 to 3 show schematic perspective views of a fitting product according to an embodiment of the present disclosure. In particular, different configurations of two joining elements in the locked position are shown. Therefore, not all details and features are shown in FIGS. 1 to 3. Embodiments of the configuration are shown, for example, in FIGS. 21A, 21B, 22, 22B, 23A, 23B.

[0063] The fitting product includes a first joining element 10 having a first edge surface 11, a second edge surface 12, and a first joining element surface 13. The second edge surface 12 is adjacent to the first edge surface 11. The first mounting surface 15 is at least a part of the first edge surface 11 (see FIGS. 1 and 3) or the second edge surface 12 (see, for example, FIGS. 2, 19, and 20).

[0064] As will be understood by those skilled in the art, any surface, such as any flat surface, can constitute a mounting surface. However, for shipping purposes, for example, to enable flat packing, the first mounting surface may be an edge surface (or may be a part of an edge surface).

[0065] The fitting product further includes a second joining element 20 having a second joining element surface 22, a third joining element surface 23, a third edge surface 21, and a fourth edge surface 24. The second mounting surface 25 is at least a part of the second joining element surface 22 (see, for example, FIGS. 2, 3, and 19), the third edge surface 21 (FIG. 1), or the fourth edge surface 24 (see, for example, FIGS. 3 and 20). The first mounting surface 15 faces the second mounting surface 25 and is configured to be locked with the second mounting surface 25.

[0066] The cross-section of the joining element may be quadrilateral, for example, when the joining element is a stud. Therefore, the second joining element surface 22 and the fourth edge surface 24 may have the same width (see, for example, FIG. 3).

[0067] The fitting product further includes a mechanical locking device including at least two dowels 31 protruding from the first mounting surface 15 and a compressible locking element 40 partially protruding from the first mounting surface 15 in a non-compressed state such as a locked position.

[0068] The first joining element 10 and / or the second joining element 20 may be a wooden joining element. The joining element according to the present disclosure may have a cubic shape such as a cubic shape having a right angle. The joining element may have 1 to 4 miter edges, or rabbets (e.g., FIGS. 21A to 21C) or half-lap joints. The cross-section of the joining element may be any shape such as a rectangle or a square, and optionally may have one or two decoratively milled surfaces. The joining element may optionally have 1 to 4 miter edges, for example 1 or 2, or 1 to 4 rabbets or half-lap joints, and optionally have one or two decoratively milled surfaces, and may be a panel, board, or stud.

[0069] The first joining element 10 and / or the second joining element 20 may be a furniture product or a frame. The furniture product may be a bookshelf, a cupboard, a wardrobe, a box, a drawer, a kitchen cabinet, a countertop, or a tabletop. The frame may be a door frame or a window frame (see, for example, FIGS. 33, 21A, 21B, 22, 22B, 23A and 23B). One or more joining elements within the product may include two or more mechanical locking devices, and the product may include various examples of joining elements with mechanical locking devices assembled. The joining element may further function as the first joining element 10 when assembled to one joining element, while functioning as the second joining element in a locked position with another joining element. This is shown in FIGS. 32 and 33. For example, in FIG. 32, one panel functions as the first joining element at 10h, while functioning as the second joining element at 20a, 20d and 20f.

[0070] The mounting surface may be flat.

[0071] The joining element of the wood material may be a joining element of particle board, HDF, MDF or plywood. Further details of the mechanical locking device are described below and are applicable to any of the configurations described in FIGS. 1 to 3.

[0072] Figures 4 to 10 show the process of connecting two joining elements of a set according to an embodiment of the present disclosure. Therefore, the features numbered in Figure 4 also exist in Figures 5 to 10, but may not be numbered. The fitting product includes a first joining element 10 having a first edge surface 11, a second edge surface 12, and a first joining element surface 13. The second edge surface 12 is adjacent to the first edge surface 11. The first attachment surface 15 may be the first edge surface 11.

[0073] The fitting product further includes a second joining element 20 having a second joining element surface 22, a third joining element surface 23, a third edge surface 21, and a fourth edge surface 24. The second attachment surface 25 may be the second joining element surface 22. The first attachment surface 15 faces the second attachment surface 25 and is configured to be locked with the second attachment surface 25.

[0074] The fitting product further includes a mechanical locking device including at least two dowels 31 protruding from the first attachment surface 15 at a first angle a1. The first angle a1 is in the range of 20 to 75 degrees, for example, in the range of 30 to 60 degrees, for example, in the range of 35 to 55 degrees, for example, in the range of 40 to 50 degrees, for example, about 45 degrees, as shown in Figures 4 to 9.

[0075] The mechanical locking device further includes at least two insertion recesses 32 extending into the second attachment surface 25. The at least two insertion recesses 32 are configured to receive the at least two dowels 31. The at least two insertion recesses 32 extending into the second attachment surface 25 may have countersunk holes 37. The insertion recesses 32 include an upper side 35 and a lower side 36 opposite to the upper side 35. The insertion recesses 32 include the countersunk holes 37 on the lower side 36 along 45 to 270 degrees, for example, 90 to 180 degrees of the circumference of the at least two insertion recesses 32. This is particularly advantageous when the joining element 20 having the insertion recesses 32 has a harder outer layer compared to the central portion of the panel. By making the countersunk holes 37 correspond to the thickness of the harder outer layer, it is possible to prevent the dowels from affecting the surface of the second joining element 20.

[0076] The second joining element 20 may include a chamfer 38 of the insertion recess at the edge of the opening of the insertion recess 32, for example, on the upper side 36 of the insertion recess 32. The chamfer 38 of the insertion recess is configured to smooth the edge of the opening. The smooth edge can prevent the edge from interfering with at least two pins 31 when at least two pins are displaced into the insertion recess 32.

[0077] The mechanical locking device further includes a compressible locking element 40 that is partially disposed within a first joining element recess 41 of the first mounting surface 15. The compressible locking element 40 protrudes partially from the first mounting surface (15) in an uncompressed state. The side surface of the joining element recess 41 extends at a third angle a3 with respect to the first mounting surface 15. The third angle a3 is in the range of 70 to 110 degrees, for example, in the range of 75 to 105 degrees, for example, in the range of 80 to 100 degrees, for example, in the range of 85 to 95 degrees, for example, about 90 degrees. In the uncompressed state, the compressible locking element 40 protrudes partially from the first mounting surface 15.

[0078] The difference between the angles a1 and a3 may be 20 to 70 degrees, for example, 30 to 60 degrees, for example, 40 to 50 degrees, for example, about 45 degrees.

[0079] The compressible locking element 40 may include a spring 43 and a locking pin 42. One end of the compressible locking element 40 may include the locking pin 42. The locking pin 42 may include an end portion 47, and the end portion 47 has a tapered shape, for example, a truncated conical shape.

[0080] In FIG. 9, the advantage of the tapered shape at the end portion 47 of the locking pin 42 is clear, that is, it can be seen that the locking pin 42 and the locking recess 50 are not perfectly aligned. However, due to the tapered shape of the pin 42, the two joining elements 10, 20 are locked to each other. To make the connection easier, the second locking recess 50 has an opening edge 52 chamfered along its circumference.

[0081] The taper angle of the tapered shape, i.e., the truncated cone shape, is approximately 10 degrees in the illustrated embodiment. The taper angle of the truncated cone shape may be approximately 3 to 20 degrees, such as 5 to 15 degrees, such as 8 to 12 degrees. The central axis of the lock pin 42 is perpendicular to the contact surface between the joining elements 10 and 20.

[0082] The mechanical locking device further includes a lock recess 50 on the second mounting surface 25 configured to receive the compressible lock element 40. The locking surface 51 of the lock recess 50 in the locked position cooperates with the compressible lock element 40 to lock the first joining element 10 relative to the second joining element 20 in a direction within the plane of the first mounting surface 15. The inclination of at least two dowels 31 prevents displacement of the first joining element 10 relative to the second joining element 20 along the normal direction of the first mounting surface 15.

[0083] The compressible lock element 40 is arranged between at least two dowels in a direction perpendicular to the aforementioned normal direction, for example, along the axis y. The compressible lock element 40 may be arranged less than 30 mm, such as less than 20 mm, such as less than 10 mm, such as less than 5 mm from the straight line between at least two dowels 31. As can be seen in FIGS. 1 and 2, the compressible lock element 40 may be on a straight line along at least two dowels 31 and the axis y, but in FIG. 3, the compressible lock element is only in a position close to the straight line between at least two dowels 31. Therefore, the compressible lock element may or may not be in the same position along the axis x perpendicular to the axis y.

[0084] The advantage of arranging a compressible locking element between at least two pins is that at least one of the at least two pins can be arranged closer to the edge of the first mounting surface. Each inclined pin prevents the relative displacement of the first joining element with respect to the second joining element along the normal direction of the first mounting surface, that is, each inclined pin presses the joining elements tightly together. Therefore, by arranging the pin near the edge of the first mounting surface, the generation of a gap can be prevented. Such a gap may occur as a result of an external force and / or a force exerted by a compressible element.

[0085] At least two insertion recesses 32 extend into the second mounting surface 25 at a second angle a2 from the second mounting surface 25, and the difference between the first angle a1 and the second angle a2 may be in the range of 0 to 6 degrees, for example, in the range of 1 to 5 degrees, for example, in the range of 2 to 4 degrees, for example, about 3 degrees. The second angle a2 may be smaller than a1.

[0086] A series of flows (Figs. 4 - 9) show, in Figs. 4 - 5, the state where two pins 31 approach and enter two insertion recesses 32. When the pins further enter the insertion recesses (see Figs. 6 - 8), the compressible locking element 40 is compressed, and the end portion 47 of the lock pin 42 can be pushed into the first joining element recess. The compression can be achieved by the spring 42. Referring to Fig. 9, when the compressible locking element 40 such as the end portion 47 of the lock pin 42 of the compressible locking element 40 fits into the lock recess 50, the compressible locking element 40 can expand and enter the lock recess 50. The compressible locking element 40 may be configured to be partially displaced within the lock recess 50 in the locked position.

[0087] Therefore, Fig. 9 shows the locked position of the set according to one embodiment.

[0088] The compressible locking element 40 is configured to be substantially located within the first joining element recess 41 in the deflected / compressed state (see, for example, Fig. 8).

[0089] The first joint element recess 41 and / or the lock recess 50 may be a cylindrical hole such as a drill hole.

[0090] At least one of the at least two insertion recesses 32, the first joint element recess 41, and the lock recess 50 may be a blind hole, such as a blind drill hole. The insertion recess 32 may be a blind hole, such as a blind drill hole. The first joint element recess 41 may be a blind hole, such as a blind drill hole. The lock recess 50 may be a blind hole, such as a blind drill hole.

[0091] Any dowel in this specification may be disposed in a hole provided in the first mounting surface 15. The hole may extend into the first mounting surface 15 at a first angle a1 from the first mounting surface 15.

[0092] Referring to FIGS. 10-16, the set according to an embodiment of the present disclosure may include a release surface 16 provided with a release hole 49 that reaches a compressible lock element 40. The compressible lock element 40 may cooperate with a release device 48 via the release hole 49 and may be configured such that an end 47 is displaced in the direction of a bottom 44 of the first joint element recess 41. By displacing the end 47 in the direction of the bottom, release of the lock may be achieved.

[0093] The inner inclined surface 46, the end 47 or the bottom 44 of the spring may cooperate with the release device 48 and may be configured such that the end 47 is displaced in the direction of the bottom 44 of the first joint element recess 41.

[0094] The unlocking hole 49 may be provided on any surface less than 10 cm, for example less than 8 cm, for example less than 6 cm, for example less than 5 cm, for example less than 4 cm, for example less than 3 cm, for example less than 2 cm, for example less than 1 cm from the compressible locking element 40. The unlocking hole 49 may be provided on a surface selected from the group consisting of the first joining element surface 13, the surface 13' opposite the first joining element surface, and the third joining element surface 23, as shown in FIGS. 12, 11, and 10 respectively. The unlocking hole 49 may be provided so as not to intersect any of the dowels such as at least two dowels 31.

[0095] The locking recess may have a bottom or an open end.

[0096] Referring to FIG. 10, the unlocking hole may be provided on the third joining element surface 23. In this case, the locking recess 50 may be concentric with the unlocking hole 49 and / or may coincide with the unlocking hole 49. In this case, the locking recess 50 may be part of the unlocking hole 49. Therefore, the locking recess 50 may be the unlocking hole 49.

[0097] FIGS. 11 and 12 show two similar embodiments with different positions of the unlocking hole. The unlocking hole 49 may be provided on the first joining element surface 13 or the surface 13' opposite the first joining element surface, depending on which position is more practical and / or less conspicuous. Therefore, the features in the embodiment of FIG. 12 also exist and can be applied in the embodiment of FIG. 11.

[0098] Figures 12 to 14 show a series of flows in which unlocking of the first joining element 10 from the second joining element 20 can be achieved. The unlocking hole may be provided near the bottom 44 of the spring 43 so that the compressible locking element 40 can fall into the unlocking hole 49 in the lateral direction of the unlocking hole 49. According to this embodiment, in order to lock the first joining element 10 to the second joining element 20, the unlocking device 48 can be inserted into the unlocking hole so that the end 47 of the compressible locking element 40 partially protrudes from the first mounting surface 15. To unlock the first joining element 10 from the second joining element 20, the unlocking device 48 is removed from the unlocking hole so that the end 47 of the compressible locking element 40 falls into the first joining element recess 41, thereby releasing the horizontal lock. When the horizontal lock is released, at least two pins can be removed from at least two insertion recesses 32. The bottom 44 of the spring may be configured to cooperate with the unlocking device unlocking device 48 so that the end 47 is displaced in the direction of the bottom 44 of the first joining element recess 41.

[0099] Referring to FIGS. 15 and 16, the inner inclined surface 46 may be configured to cooperate with the unlocking device 48 so that the end 47 is displaced in the direction of the bottom 44 of the first joining element recess 41. The unlocking hole may be provided in the first joining element surface 13 or the surface 13' facing the first joining element surface, depending on which position is more practical and / or less conspicuous. The unlocking hole may be a blind hole or an open end penetrating the first joining element (not shown). The unlocking hole may be an open end so that the unlocking tool can be left inserted into the hole during unlocking. The compressible locking element 40, for example, the inner inclined surface 46, may be configured to cooperate with the unlocking device so that the end 47 is displaced in the direction of the bottom 44 of the first joining element recess 41. By inserting the unlocking device 48 into the unlocking hole 49, the inner inclined surface can be reached, and the force generated thereby causes the end 47 to be displaced in the direction of the bottom 44 of the first joining element recess 41. In the above manner, unlocking can be achieved.

[0100] Referring to FIGS. 17 - 19, the set may further include one or more additional dowels 33 projecting from the first mounting surface at a first angle a1. The additional dowels add strength to the lock in the direction within the plane of the first mounting surface. The one or more additional dowels may be evenly arranged on the mounting surface, such as along the straight - line direction between at least two dowels 31. The number of additional dowels may also depend on the length of the first mounting surface 15. The set may further include 1 - 10, for example 1 - 5, for example 2 - 4 additional dowels 33.

[0101] The set may further include one or more additional insertion recesses 34 extending into the second mounting surface 25 at a second angle a2 from the second mounting surface 25 and configured to receive one or more additional dowels 33. The number of additional insertion recesses 34 typically corresponds to the number of additional dowels 33.

[0102] Referring to FIG. 20, the fitting product may further include one or more additional compressible locking elements 40' partially disposed within an additional first joint - element recess 41'. The set may further include one or more additional lock recesses 50' in the second mounting surface 25 configured to receive the additional compressible locking elements 40'.

[0103] Referring to FIGS. 21A to 21B, the fitting product may be a frame. The first joining element 10 and the second joining element 20 may be studs. The first joining element 10 and the second joining element 20 may have a rabbet joint as shown in the figure. At least two dowels may protrude from either the first joining element 10 or the second joining element 20. An exemplary embodiment of the frame is shown in FIG. 33. The compressible locking element 40 is partially disposed within the first joining element recess 41 of the first mounting surface 15, and the side surface of the joining element recess 41 extends at a third angle a3 with respect to the first mounting surface 15. The non-compressed compressible locking element 40 partially protrudes from the first mounting surface 15, and the lock recess 50 of the second mounting surface 25 is configured to receive the compressible locking element 40. The unlocking surface 16 is provided with an unlocking hole 49 that reaches the compressible locking element 40. The unlocking hole 49 may be provided straight on the unlocking surface 16 until it reaches the compressible locking element 40.

[0104] Referring to FIG. 22, the joining element 10 and the second joining element 20 may have a non-square cross-section. The compressible locking element 40 may be disposed between at least two dowels 31 in a direction along the axis y. The axis y may be parallel to the longest side of the cross-section of the joining element 10. The inclination direction of at least two dowels may be in a direction along the axis x perpendicular to the axis y.

[0105] Referring to FIG. 22B, this figure emphasizes that when the compressible locking element is within the first joining element 10, at least two dowels may protrude from the second joining element 20 instead of from the first joining element 10. However, the embodiments shown in FIGS. 22 and 22B may alternatively, according to the first aspect, have at least two dowels 31 protruding from the first mounting surface 15 at a first angle a1 and at least two insertion recesses 32 extending into the second mounting surface 25. According to the first aspect of the present invention, at least two insertion recesses 32 are configured to receive at least two dowels 31.

[0106] Referring to FIGS. 23A - 23B, the fitting product may be a frame. The first joining element 10 and the second joining element 20 may be studs. The joining element 10 and the second joining element 20 may have a cross - section that is not square. The compressible locking element 40 may be arranged between at least two dowels 31 in a direction along the axis y. The direction of the straight line between the at least two dowels may deviate from the direction of the axis y. The inclination direction of the at least two dowels may be along the axis y or along the straight line between the at least two dowels.

[0107] Referring to FIG. 24, the same embodiment as FIGS. 23 and 23B is shown, which is a view and an enlarged view of the joining element 20, where it is emphasized that the at least two dowels and the compressible locking element do not need to be linear. The compressible locking element 40 may be arranged between at least two dowels 31 in a direction along the axis y. The direction of the straight line between the at least two dowels may deviate from the direction of the axis y. The inclination direction of the at least two dowels may be along the axis y.

[0108] Referring to FIGS. 27 and 28, the figures show a comparison between a fitting product (system 1) in which the compressible locking element 40 is arranged closer to the edge than one of the at least two inclined dowels 31 that is inclined in a direction away from the side edge 17, and a fitting product in which the compressible locking element 40 is arranged on the inclined dowel 31. As determined in Example 1 and Comparative Example 1, system 2 has a stronger lock than system 1. In particular, when the same force is applied, the extension of system 2 is smaller than that of system 1.

[0109] At least two dowels are inclined away from an edge of the first attachment surface 11, for example a side edge 17, i.e., an edge of the first attachment surface adjacent to the second edge surface 12. At least one of the at least two dowels arranged closest to the side edge 17 may be arranged at a distance L of less than 125 mm, for example less than 75 mm, for example less than 65 mm, for example less than 50 mm from any edge of the first attachment surface 11 such as the side edge 17. If the thickness of the second joining element 20 is greater, the distance L may be longer. The ratio between the distance L between the center line of the dowel inclined away from the side edge and the side edge and the thickness T of the second joining element 20 may be less than 5, for example less than 4, for example less than 3, for example less than 2, for example less than 1. The ratio between the distance L between the center line of the dowel inclined away from the side edge and the side edge and the thickness T of the second joining element 20 may be 1 to 5, for example 1 to 4, for example 1 to 3.

[0110] Referring to FIGS. 25A - 25C, a compressible locking element 40 including a spring 43 and a locking pin 42 is shown. The compressible locking element 40 can be used to lock two elements to each other. One end of the compressible locking element 40 may include the locking pin 42.

[0111] The spring 43 may be the spring 39 and includes a U - shaped portion 66 and an adjacent U - shaped portion 66, with the legs of the U - shaped portion being connected to the legs of the adjacent U - shaped portion.

[0112] The spring 43 may include two or more U - shaped portions 66.

[0113] An advantage in this embodiment of the spring 43 may be that when the spring 43 is compressed, the outer diameter of the spring does not increase or the increase in the outer diameter is minimal, such as less than 0.3 mm. This can result in the effect that, for example, when the spring 43 inserted into a hole or recess 41 is compressed, it is not pinched within the hole / recess.

[0114] The compressible locking element 40 includes a polymeric material such as a thermoplastic material and may optionally have strength such as glass fibers.

[0115] The spring 43 and the locking pin 42 may be integrally formed by injection molding.

[0116] Also, the U-shaped portion may be a circular region extending beyond 180 degrees.

[0117] One end of the spring 43 terminates at a U-shaped portion where the end 69 faces away from the spring 43.

[0118] The shape along the spring is such that the surface surrounding the outer portion of the U-shaped portion 66 is cylindrical. The diameter of the cylindrical surface is larger than that in the maximum compressed state in the uncompressed state of the spring 43.

[0119] The spring 43 may be a static load compression spring.

[0120] Furthermore, one end of the compressible locking element 40 includes a locking pin 42. The locking pin 42 may include an end portion 47 having a tapered shape, for example, a truncated conical shape.

[0121] The locking pin 42 may include a radial recess 45 that may optionally extend through the locking pin 42. The opening of the radial recess 45 is large on one side of the locking pin 42 and has an inner inclined surface 46 towards the other opening.

[0122] To facilitate the placement of the spring-loaded pin, that is, to make it easier to confirm whether the pin is correctly placed, the end portion 47 of the locking pin 42 has a notch area 15. Also, the central portion of the connecting element 5 furthest from the locking pin 42 has two opposing radial protrusions 14 on its outermost surface. When the spring-loaded locking pin is inserted into the hole / recess of the joining element, the locking pin having these protrusions 14 exhibits rotational resistance.

[0123] The side surface of the locking pin has a radially extending recess 45, and the recess 11 has an inner inclined surface 46 that extends axially in the direction of the locking pin. The recess starts from an axial point 72 on the side of the recess opening closest to the end of the locking pin having a spring. The angle a4 of the inclined surface is approximately 30 degrees when viewed from the side of the locking pin with a spring.

[0124] The side surface of the locking pin has a radially extending recess 45, the recess has an inner inclined surface 46 that extends axially in the direction of the locking pin 42, and the recess starts from an axial point 72 on the side of the recess opening closest to the end of the locking pin where the spring 43 of the locking pin is located.

[0125] The recess 45 of the locking pin is a through hole having a recess opening and a recess outlet.

[0126] The spring 43 may be configured such that two adjacent U-shaped portions 66 approach or contact each other in a compressed state as compared to an uncompressed state.

[0127] The U-shaped portion 66 may be a circular region that extends beyond 180 degrees.

[0128] The thickness (t) of the U-shaped portion at the leg of the U-shaped portion may be smaller than the thickness (T) of the U-shaped portion closer to the bottom of the U-shaped portion 66.

[0129] The shape along the spring may be such that the surface that circumscribes the outer portion of the U-shaped portion 66 is cylindrical.

[0130] The diameter of the cylindrical surface in the uncompressed state may be larger than the maximum compressed state of the compressible locking element 40.

[0131] The end 47 may include a notch region 70.

[0132] The spring 43 may connect the first element 77 and the second element 78, and each element includes a disc-shaped portion 75 and two opposing bridging struts 76, 79 with respect to the center of the disc-shaped portion 75. The two opposing bridging struts 76, 79 may be arranged at an equal distance from the center of the disc-shaped portion 75 and on the same side. The elements 77, 78 having the struts 76, 79 may be arranged such that the disc-shaped portions 75 are parallel to each other. The first element 77 has a strut 76 directed towards the second element 78, and may be connected to the second element 78 by the strut 76 with the strut 79 of the second element 78 directed away from the first element 77. The line between the struts 76 of the first element 77 may be perpendicular to the line between the struts 79 of the second element 78 when viewed in the axial direction.

[0133] The disc-shaped portion 75 may be circular.

[0134] The disc-shaped portion 75 may have a circular opening 80 disposed at the center.

[0135] The disc-shaped portion 75 may be made of an elastic material.

[0136] The spring may include at least four elements selected from the first element 77 and the second element 78.

[0137] The axial distance 81 between two adjacent disc-shaped portions 75 may be greater than the axial thickness 82 of a single disc-shaped portion 75.

[0138] Referring to FIG. 22B, this figure emphasizes that when the compressible locking element is within the first joining element 10, at least two dowels may project from the second joining element 20 rather than from the first joining element 10. According to a third aspect of the present invention, a furniture product is provided that includes a first joining element 10 having a first edge surface 11, a second edge surface 12, and a first joining element surface (13), wherein the second edge surface (12) is adjacent to the first edge surface (11), and the first mounting surface (15) is at least a part of the first edge surface (11) or the second edge surface (12). The furniture product includes a second joining element (20) having a second joining element surface (22), a third joining element surface (23), a third edge surface (21) and a fourth edge surface (24), wherein the second mounting surface (25) is at least a part of the second joining element surface (22), the third edge surface (21) or the fourth edge surface (24), the first mounting surface (15) faces the second mounting surface (25), and is configured to be locked with the second mounting surface (25). The furniture product further includes a mechanical locking device including at least two dowels (31) protruding from the second mounting surface (25) at a first angle (a1), and at least two insertion recesses (32) extending into the first mounting surface (15), wherein the at least two insertion recesses (32) are configured to receive the at least two dowels (31), and a compressible locking element (40) partially disposed in a first joining element recess (41) of the first mounting surface (15). The side surface of the joining element recess (41) extends at a third angle (a3) with respect to the first mounting surface (15), and the non-compressed compressible locking element (40) partially protrudes from the first mounting surface (15). The mechanical locking device further includes a locking recess (50) of the second mounting surface (25) configured to receive the compressible locking element (40). The locking surface (51) of the locking recess (50) in the locked position cooperates with the compressible locking element 40 to lock the first joining element (10) to the second joining element (20) in a direction within the plane of the first mounting surface (15).The inclination of at least two pins (31) prevents the displacement of the first joining element (10) relative to the second joining element (20) along the normal direction of the first mounting surface (15). The compressible locking element (40) is arranged between at least two pins in a locking position in a direction perpendicular to the aforementioned normal direction. The first angle (a1) is in the range of 20 to 75 degrees, and the third angle (a3) is in the range of 70 to 110 degrees. The difference between the first embodiment and the third embodiment is that the pins protrude from the second joining element. Therefore, all features in the first embodiment can also be applied to the third embodiment.

[0139] At least two insertion recesses (32) may extend into the first mounting surface (15) at a second angle (a2) from the first mounting surface (15), and the difference between the first angle (a1) and the second angle (a2) may be in the range of 0 to 6 degrees.

[0140] The compressible locking element (40) may be arranged at a distance of less than 30 mm, for example less than 20 mm, for example less than 10 mm, for example less than 5 mm from the straight line between at least two pins (31) in the locking position.

[0141] The compressible locking element (40) may be configured to be substantially arranged within the first joining element recess (41) in a deflected / compressed state.

[0142] The compressible locking element (40) may be configured to be partially displaced within the locking recess (50) in the locking position.

[0143] At least one of the at least two insertion recesses (32), the first joining element recess (41), and the locking recess (50) may be a blind hole, for example a blind drilled hole.

[0144] The fitting product may further include one or more additional dowels (33) protruding at a first angle (a1) from a second mounting surface (25), and one or more additional insertion recesses (34) extending into the first mounting surface (15) at a second angle (a2) from the first mounting surface (15) and configured to receive the one or more additional dowels (33).

[0145] The fitting product may further include one or more additional compressible locking elements (40') partially disposed within an additional first joining element recess (41'), and one or more additional locking recesses (50') in the second mounting surface (25) configured to receive the additional compressible locking elements (40').

[0146] As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless expressly stated otherwise. Further, as used herein, the terms "includes", "comprises", "including", and / or "comprising" identify the presence of the described features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present.

[0147] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, terms as defined in commonly used dictionaries are to be interpreted as having a meaning that coincides with the meaning in the context of the relevant art and are not to be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0148] Although some embodiments of the present invention have been described and illustrated herein, those skilled in the art will readily envision various other means and / or structures for performing the functions and / or obtaining the results and / or one or more advantages described herein, and each such variation and / or modification is to be regarded as within the scope of the present invention. More generally, those skilled in the art will recognize that all parameters, dimensions, materials, and configurations described herein are exemplary, and that the actual parameters, dimensions, materials, and / or configurations will depend upon the particular application or applications for which the teachings of the present invention are used.

[0149] As used herein and in the claims, the indefinite articles "a" and "an" are to be understood to mean "at least one" unless explicitly stated otherwise.

[0150] Comparative Example 1 Two particle board panels with dimensions 210×60×16 mm and 210×74×16 mm and a density of 600 kg / m3 were assembled according to the schematic arrangement of FIG. 27 such that the first edge surface 11 faced the second joining element surface 22. Wooden dowels with a length of 40 mm and a diameter of 8 mm were used for the dowels. The angles a1 was 42 degrees, a2 was 45 degrees, and a3 was 90 degrees. The compressible locking element was made of Hostaform 13031 (polyoxymethylene containing graphene nanoribbons).

[0151] In system 1, the compressible locking element was placed near the side edge 17, i.e., the edge between the first edge surface 11 and the second edge surface 12, closer to the side edge than the dowel, at a position 30 mm from the side edge. The distance L between the center line of the dowel, which slopes away from the side edge, and the side edge 17 was 70 mm.

[0152] The assembled particle board panel was fixed, and a separating force F1 was applied to one side of the panel. The force was increased, and the elongation of the system in the direction of the force was measured. This experiment was conducted 5 times with similar samples.

[0153] Example 1 Two particle board panels with dimensions 210×60×16 mm and 210×74×16 mm and a density of 600 kg / m3 were assembled according to the schematic setup of FIG. 28 such that the first edge surface 11 faced the second joining element surface 22. Wooden dowels with a length of 40 mm and a diameter of 8 mm were used for the dowels. The angles a1 was 42°, a2 was 45°, and a3 was 90°. The compressible locking element was made of Hostaform 13031 (polyoxymethylene containing graphene nanoribbons).

[0154] In system 2, the compressible locking element was placed between the dowels, 64 mm from the side edge 17. The distance L between the centerline of the dowel inclined in the direction away from the side edge 17 and the side edge was 27 mm.

[0155] The assembled particle board panel was fixed, and a separating force F1 was applied to one side of the panel. The force was increased, and the elongation of the system in the direction of the force was measured. This experiment was conducted 5 times with similar samples.

[0156] Regarding the back step, there may be something to say as there is a significant difference between system 2 and system 1 in that it is closer to the edge.

[0157] Results: In FIG. 29, the elongation of 10 samples (5 each of system 1 and system 2) is plotted against the applied force F1. This result clearly shows that the elongation of system 2 is lower than that of system 1, meaning that the locking becomes stronger when the compressible locking element is placed between at least two dowels. In FIGS. 30 and 31, photos were taken with a force of 200 N applied to system 1 and system 2 respectively. By comparison, it shows that the gap of system 2 is smaller than that of system 1.

[0158] Itemized Table of Embodiments 1. A first joining element (10) having a first edge surface (11), a second edge surface (12), and a first joining element surface (13), wherein the second edge surface (12) is adjacent to the first edge surface (11), and a first mounting surface (15) is at least part of the first edge surface (11) or the second edge surface (12), the first joining element (10); A second joining element (20) having a second joining element surface (22), a third joining element surface (23), a third edge surface (21), and a fourth edge surface (24), wherein a second mounting surface (25) is at least part of the second joining element surface (22), the third edge surface (21), or the fourth edge surface (24), the first mounting surface (15) faces the second mounting surface (25), and is configured to be locked with the second mounting surface (25), the second joining element (20); At least two dowels (31) protruding from the first mounting surface (15) at a first angle (a1); At least two insertion recesses (32) extending into the second mounting surface (25), wherein the at least two insertion recesses (32) are configured to receive the at least two dowels (31), the at least two insertion recesses (32); A compressible locking element (40) partially disposed within a first joining element recess (41) of the first mounting surface (15), wherein side surfaces of the joining element recess (41) extend at a third angle (a3) with respect to the first mounting surface (15), and the compressible locking element (40) in a non-compressed state partially protrudes from the first mounting surface (15), the compressible locking element (40); A furniture product including a mechanical locking device including the locking recess (50) of the second mounting surface (25) configured to receive the compressible locking element (40). The locking surface (51) of the locking recess (50) in the locked position cooperates with the compressible locking element (40) to lock the first joining element (10) relative to the second mounting element (20) in a direction within the plane of the first mounting surface (15), and the inclination of the at least two dowels (31) prevents relative displacement of the first joining element (10) relative to the second joining element (20) along the normal direction of the first mounting surface (15). The compressible locking element (40) is arranged between the at least two dowels in a direction perpendicular to the normal direction, with a first angle (a1) in the range of 20 to 75 degrees and a third angle (a3) in the range of 70 to 110 degrees, a fitting product.

[0159] 2. The at least two insertion recesses (32) extend into the second mounting surface (25) at a second angle (a2) from the second mounting surface (25), and the difference between the first angle (a1) and the second angle (a2) is in the range of 0 to 6 degrees, the fitting product according to item 1.

[0160] 3. The compressible locking element (40) is arranged less than 30 mm, for example less than 20 mm, for example less than 10 mm, for example less than 5 mm from the straight line between the at least two dowels (31), the fitting product according to item 1 or 2.

[0161] 4. The compressible locking element (40) is configured to be substantially arranged within the first joining element recess (41) in a deflected / compressed state, the fitting product according to any one of items 1 to 3.

[0162] 5. The compressible locking element (40) is configured to be partially displaced into the locking recess (50) in the locked position, the fitting product according to any one of items 1 to 4.

[0163] 6. The fitting product according to any one of items 1 to 5, wherein at least one of the at least two insertion recesses (32), the first joining element recess (41), and the lock recess (50) is a hole, such as a blind hole, for example a blind drill hole.

[0164] 7. One or more additional dowels (33) protruding at a first angle (a1) from the first mounting surface, and one or more additional insertion recesses (34) extending into the second mounting surface (25) at a second angle (a2) from the second mounting surface (25) and configured to receive the one or more additional dowels (33), the fitting product according to any one of items 1 to 6.

[0165] 8. One or more additional compressible lock elements (40') partially disposed in an additional first joining element recess (41'), and one or more additional lock recesses (50') in the second mounting surface (25) configured to receive the additional compressible lock elements (40'), the fitting product according to any one of items 1 to 7.

[0166] 9. The fitting product according to any one of items 1 to 8, wherein the compressible lock element (40) includes a spring (43) and a lock pin (42).

[0167] 10. The fitting product according to any one of items 1 to 9, wherein one end of the compressible lock element (40) includes the lock pin (42).

[0168] 11. The lock pin (42) includes an end portion (47), and the end portion (47) has a tapered shape, such as a truncated conical shape, the fitting product according to item 9 or 10.

[0169] 12. The unlocking surface (16) is provided with an unlocking hole (49) that reaches the compressible locking element (40), and the compressible locking element cooperates with an unlocking device (48) via the unlocking hole (49) such that the end portion (47) is configured to be displaced toward the bottom (44) of the first engaging element recess (41). The fitting product according to any one of items 9 to 11.

[0170] 13. The locking pin (42) includes a radial recess (45) that optionally extends through the locking pin (42). The fitting product according to any one of items 9 to 12.

[0171] 14. The opening of the radial recess (45) is large on one side of the locking pin (42), and has an inner inclined surface (46) toward the other opening. The fitting product according to item 13.

[0172] 15. The spring (43) includes a U-shaped portion (66) and an adjacent U-shaped portion (66), and the legs of the U-shaped portion are connected to the legs of the adjacent U-shaped portion. The fitting product according to any one of items 9 to 14.

[0173] 16. The spring (43) is configured such that two adjacent U-shaped portions (66) approach or contact each other in the compressed state as compared to the uncompressed state. The fitting product according to item 15.

[0174] 17. The U-shaped portion (66) is a circular area that extends over more than 180 degrees. The fitting product according to item 15 or 16.

[0175] 18. The thickness (t) of the U-shaped portion is smaller at the legs of the U-shaped portion than the thickness (T) of the U-shaped portion closer to the bottom of the U-shaped portion (66). The fitting product according to any one of items 15 to 17.

[0176] 19. The fitting product according to any one of items 15 to 18, characterized in that the shape along the spring is such that the surface surrounding the outer portion of the U-shaped portion (66) is cylindrical.

[0177] 20. The fitting product according to any one of items 15 to 19, characterized in that the diameter of the cylindrical surface is larger than that in the maximum compressed state in the non-compressed state of the compressible lock element (40).

[0178] 21. The fitting product according to any one of items 9 to 20, characterized in that the end portion (47) includes a notch area (70).

[0179] 22. The spring (43) has a first element and a second element (77, 78) connected together, each element including a disc-shaped portion (75) and two opposing bridging struts (76, 79) with respect to the center of the disc-shaped portion (75). The two opposing bridging struts (76, 79) are arranged at an equal distance from the center of the disc-shaped portion (75) and on the same side. The elements (77, 78) having the struts (76, 79) are arranged parallel to the disc-shaped portion (75). The first element (77) has the strut (76) directed towards the second element (78). With the strut (79) of the second element (78) directed away from the first element (77), the first element (77) is connected to the second element (78) by the strut (76). The line between the struts (76) of the first element (77) is perpendicular to the line between the struts (79) of the second element (78) when viewed axially. The fitting product according to item 9.

[0180] 23. The fitting product according to item 22, characterized in that the disc-shaped portion (75) is circular.

[0181] 24. The fitting product according to item 22 or 23, characterized in that the disc-shaped portion (75) has a circular opening (80) arranged at the center.

[0182] 25. The fitting product according to any one of items 22 to 24, wherein the disc-shaped portion (75) is made of an elastic material.

[0183] 26. The fitting product according to any one of items 22 to 25, wherein the spring is composed of at least four elements selected from the first element and the second element (77, 78).

[0184] 27. The fitting product according to any one of items 22 to 26, wherein the axial distance (81) between two adjacent disc-shaped portions (75) is greater than the axial thickness (82) of a single disc-shaped portion (75).

[0185] 28. The fitting product according to any one of items 1 to 27, wherein each dowel (31) includes a lower side and an upper side, and the first angle (a1) is between the lower side and the first mounting surface (15).

[0186] 29. The fitting product according to any one of claims 1 to 28, wherein the joining element recess (41) consists of opposing side surfaces and a bottom surface, and the bottom surface extends between the side surface and the opposing side surface.

[0187] 30. The fitting product according to any one of claims 1 to 29, wherein the compressible locking element (40) is configured to be compressed against the bottom surface of the joining element recess (41) during the assembly of the first joining element and the second joining element.

[0188] 31. A first joining element (10) having a first edge surface (11), a second edge surface (12) and a first joining element surface (13), wherein the second edge surface (12) is adjacent to the first edge surface (11), and the first mounting surface (15) is at least a part of the first edge surface (11) or the second edge surface (12), and the first joining element (10), A second joining element (20) having a second joining element surface (22), a third joining element surface (23), a third edge surface (21) and a fourth edge surface (24), wherein the second mounting surface (25) is at least a part of the second joining element surface (22), the third edge surface (21) or the fourth edge surface (24), the first mounting surface (15) faces the second mounting surface (25), and the second joining element (20) is configured to be locked with the second mounting surface (25), At least two dowels (31) protruding from the second mounting surface (25) at a first angle (a1), At least two insertion recesses (32) extending into the first mounting surface (15), the at least two insertion recesses (32) being configured to receive the at least two dowels (31), A compressible locking element (40) partially disposed within a first joining element recess (41) of the first mounting surface (15), wherein the side surface of the joining element recess (41) extends at a third angle (a3) with respect to the first mounting surface (15), and the non-compressed compressible locking element (40) partially protrudes from the first mounting surface (15), the compressible locking element (40), A mechanical locking device including a locking recess (50) of the second mounting surface (25) configured to receive the compressible locking element (40), and a fitting product including the mechanical locking device, The locking surface (51) of the locking recess (50) in the locking position is configured to cooperate with the compressible locking element (40) in a direction within the plane of the first mounting surface (15) to lock the first joining element (10) to the second joining element (20). The inclination of the at least two dowels (31) prevents relative displacement of the first joining element (10) with respect to the second joining element (20) along the normal direction of the first mounting surface (15). The compressible locking element (40) is arranged between the at least two dowels in the locking position in a direction perpendicular to the normal direction. The first angle (a1) is in the range of 20 to 75 degrees, and the third angle (a3) is in the range of 70 to 110 degrees. A fitting product.

[0189] 32. The at least two insertion recesses (32) extend into the first mounting surface (15) at a second angle (a2) from the first mounting surface (15), and the difference between the first angle (a1) and the second angle (a2) is in the range of 0 to 6 degrees. The fitting product according to item 31.

[0190] 33. The compressible locking element (40) is arranged at the locking position less than 30 mm, for example less than 20 mm, for example less than 10 mm, for example less than 5 mm from the straight line between the at least two dowels (31). The fitting product according to item 31 or 32.

[0191] 34. The compressible locking element (40) is configured to be substantially arranged within the first joining element recess (41) in a deflected / compressed state. The fitting product according to any one of items 31 to 34.

[0192] 35. The compressible locking element (40) is configured to be partially displaced within the locking recess (50) in the locking position. The fitting product according to any one of items 31 to 34.

[0193] 36. The fitting product according to any one of items 31 to 35, wherein at least one of the at least two insertion recesses (32), the 31st joining element recess (41), and the lock recess (50) is a hole such as a blind hole, for example a blind drill hole.

[0194] 37. One or more additional dowels (33) protruding from the second mounting surface (25) at a first angle (a1), One or more additional insertion recesses (34) extending into the first mounting surface (15) from the first mounting surface (15) at a second angle (a2) and configured to receive the one or more additional dowels (33), the fitting product according to any one of items 31 to 36.

[0195] 38. One or more additional compressible lock elements (40') partially disposed within an additional first joining element recess (41'), and one or more additional lock recesses (50') in the second mounting surface (25) configured to receive the additional compressible lock elements (40'), the fitting product according to any one of items 31 to 37.

Claims

1. A first joining element (10) having a first edge surface (11), a second edge surface (12), and a first joining element surface (13), wherein the second edge surface (12) is adjacent to the first edge surface (11), and the first mounting surface (15) is at least a part of the first edge surface (11) or the second edge surface (12), A second joining element (20) having a second joining element surface (22), a third joining element surface (23), a third edge surface (21), and a fourth edge surface (24), wherein the second mounting surface (25) is at least a part of the second joining element surface (22), the third edge surface (21), or the fourth edge surface (24), and the first mounting surface (15) faces the second mounting surface (25) and is configured to lock with the second mounting surface (25), and At least two dowels (31) protruding from the first mounting surface (15) at a first angle (a1), At least two insertion recesses (32) extending to the second mounting surface (25), wherein the at least two insertion recesses (32) are configured to receive the at least two dowels (31), A compressible locking element (40) is partially disposed within a first joint element recess (41) of the first mounting surface (15), wherein the side surface of the joint element recess (41) extends at a third angle (a3) ​​with respect to the first mounting surface (15), and the uncompressed compressible locking element (40) partially protrudes from the first mounting surface (15), A joinery product comprising a mechanical locking device including a locking recess (50) in the second mounting surface (25) configured to receive the compressible locking element (40), The locking surface (51) of the locking recess (50) in the locked position is configured to cooperate with the compressible locking element (40) to lock the first joint element (10) to the second mounting element (20) in a direction in the plane of the first mounting surface (15), and the inclination of the at least two dowels (31) prevents relative displacement of the first joint element (10) to the second joint element (20) along the direction normal to the first mounting surface (15). The collapsible locking element (40) is positioned between the at least two dowels in a direction perpendicular to the normal direction, and the first angle (a1) is in the range of 20 to 75 degrees, and the third angle (a3) ​​is in the range of 70 to 110 degrees, in a joinery product.

2. The joinery product according to claim 1, wherein the at least two insertion recesses (32) extend inward from the second mounting surface (25) at a second angle (a2), and the difference between the first angle (a1) and the second angle (a2) is in the range of 0 to 6 degrees.

3. The joinery product according to claim 1 or 2, wherein the compressible locking element (40) is positioned less than 30 mm, for example less than 20 mm, for example less than 10 mm, for example less than 5 mm from the straight line between the at least two dowels (31).

4. The joinery product according to claim 1 or 2, wherein the compressible locking element (40) is configured to be substantially positioned within the first joint element recess (41) when in a flexed / compressed state.

5. The joinery product according to claim 1 or 2, wherein the compressible locking element (40) is configured to be partially displaced within the locking recess (50) in the locked position.

6. The joinery product according to claim 1 or 2, wherein at least one of the at least two insertion recesses (32), the first joining element recess (41), and the lock recess (50) is a hole such as a bottomed hole, such as a bottomed drilled hole.

7. One or more additional dowels (33) protruding from the first mounting surface at a first angle (a1), The joinery product according to claim 1 or 2, further comprising: one or more additional insertion recesses (34) extending inward from the second mounting surface (25) at a second angle (a2) and configured to receive the one or more additional dowels (33).

8. The joinery product according to claim 1 or 2, further comprising one or more additional compressible locking elements (40') partially disposed within an additional first joint element recess (41'), and one or more additional locking recesses (50') of the second mounting surface (25) configured to receive the additional compressible locking elements (40').

9. The joinery product according to claim 1 or 2, wherein the compressible locking element (40) includes a spring (43) and a locking pin (42).

10. The joinery product according to claim 9, wherein one end of the compressible locking element (40) includes the locking pin (42).

11. The joinery product according to claim 9, wherein the locking pin (42) includes an end (47), and the end (47) has a tapered shape, for example, a truncated cone shape.

12. The lock release surface (16) is provided with a lock release hole (49) that reaches the compressible lock element (40), and the compressible lock element is configured to cooperate with a lock release device (48) through the lock release hole (49) so that the end portion (47) is displaced toward the bottom portion (44) of the first joint element recess (41), as described in claim 11.

13. The joinery product according to claim 9, wherein the locking pin (42) includes a radial recess (45) that optionally penetrates and extends through the locking pin (42).

14. The joinery product according to claim 13, wherein the opening of the radial recess (45) is larger on one side of the lock pin (42) and has an inclined surface (46) toward the other opening.

15. The building component product according to claim 9, wherein the spring (43) includes a U-shaped portion (66) and an adjacent U-shaped portion (66), and the leg portion of the U-shaped portion is connected to the leg portion of the adjacent U-shaped portion.

16. The building component product according to claim 15, wherein the spring (43) is configured such that two adjacent U-shaped portions (66) approach or come into contact with each other in a compressed state compared to the uncompressed state.

17. The joinery product according to claim 15, wherein the U-shaped portion (66) is a circular area extending over more than 180 degrees.

18. The joinery product according to claim 15, wherein the thickness (t) of the U-shaped portion is smaller at the leg portion of the U-shaped portion (66) than the thickness (T) of the U-shaped portion (66) near the bottom of the U-shaped portion (66).

19. The building component product according to claim 15, characterized in that the shape along the spring is such that the surface encircling the outer portion of the U-shaped part (66) is cylindrical.

20. The joinery product according to claim 19, wherein the diameter of the cylindrical surface is greater in the uncompressed state of the compressible locking element (40) than in the maximum compressed state.

21. The joinery product according to claim 11, wherein the end portion (47) includes a notched area (70).

22. The joinery product according to claim 1 or 2, wherein each dowel (31) includes a lower and an upper part, and the first angle (a1) is between the lower part and the first mounting surface (15).

23. The joinery product according to claim 1 or 2, wherein the joint element recess (41) includes opposing side surfaces and a bottom surface, and the bottom surface extends between the side surfaces and the opposing side surfaces.

24. The joinery product according to claim 1 or 2, wherein during the assembly of the first joining element and the second joining element, the compressible locking element (40) is configured to be compressed against the bottom surface of the joining element recess (41).

25. A first joining element (10) having a first edge surface (11), a second edge surface (12), and a first joining element surface (13), wherein the second edge surface (12) is adjacent to the first edge surface (11), and the first mounting surface (15) is at least a part of the first edge surface (11) or the second edge surface (12), A second joining element (20) having a second joining element surface (22), a third joining element surface (23), a third edge surface (21), and a fourth edge surface (24), wherein the second mounting surface (25) is at least a part of the second joining element surface (22), the third edge surface (21), or the fourth edge surface (24), and the first mounting surface (15) faces the second mounting surface (25) and is configured to lock with the second mounting surface (25), and At least two dowels (31) protruding from the second mounting surface (25) at a first angle (a1), At least two insertion recesses (32) extending into the first mounting surface (15), wherein the at least two insertion recesses (32) are configured to receive the at least two dowels (31), A compressible locking element (40) is partially disposed within a first joint element recess (41) of the first mounting surface (15), wherein the side surface of the joint element recess (41) extends at a third angle (a3) ​​with respect to the first mounting surface (15), and the uncompressed compressible locking element (40) partially protrudes from the first mounting surface (15), A joinery product comprising a mechanical locking device including a locking recess (50) in the second mounting surface (25) configured to receive the compressible locking element (40), A joinery product wherein the locking surface (51) of the locking recess (50) in the locked position is configured to cooperate with the compressible locking element (40) in a direction in the plane of the first mounting surface (15) to lock the first joining element (10) with respect to the second joining element (20), the inclination of the at least two dowels (31) prevents relative displacement of the first joining element (10) with respect to the second joining element (20) along the normal direction of the first mounting surface (15), the compressible locking element (40) is positioned between the at least two dowels in the locked position in a direction perpendicular to the normal direction, the first angle (a1) is in the range of 20 to 75 degrees, and the third angle (a3) ​​is in the range of 70 to 110 degrees.

26. The joinery product according to claim 25, wherein the at least two insertion recesses (32) extend inward from the first mounting surface (15) at a second angle (a2), and the difference between the first angle (a1) and the second angle (a2) is in the range of 0 to 6 degrees.

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