RU2585543C1 - Furniture frame - Google Patents

Abstract

FIELD: personal and household goods.

SUBSTANCE: furniture frame is formed by panels edges of which are connected by dado and comb joint. Edge of the first panel comprises an edge bearing surface along the edge of comb, as well as a locking slot in the base of the comb. Second panel has a socket having the shape corresponding to the form of the first panel edge, with an assembly slot and external support surface, as well as a slot. When panels are connected to each other, connection of slots forms a channel, into which there enters the blocking key to lock the key in the slot.

EFFECT: invention is aimed at simplification of framework assembly without loss of reliability of connections.

13 cl, 32 dwg

Description

Technical field

The present invention relates to a furniture frame formed by panels connected by their edges by joining in a groove and a comb, in which

- the first and second panels are connected through the edge of the first panel adjacent to the inner edge of the second panel, thus forming a dihedral angle, while the first panel has a first direction and the second panel has a second direction in a plane perpendicular to the direction of the edge of the dihedral angle formed in result of connection.

State of the art

Furniture frames are obtained by assembling panels, usually by joining them together.

The means of joining the panels can be very different, ranging from the complex forms of joining used in carpentry, and to more simple joining with edges using glue with reinforcement, if necessary, using pins and staples. In glued joints, inserts, such as dowels, plates located in the corresponding grooves and joined with glue (for example, oval or rectangular plates sold under the trademark "Lamello") are often used with edges.

However, to ensure good bonding, these bonding methods require specialized skills.

The purpose of the invention

The present invention provides a furniture frame obtained by connecting panels whose assembly in the corners of the frame is simple, provides a guaranteed result and does not require special knowledge in the field of carpentry.

The essence and advantages of the invention

In connection with this object of the invention is a furniture frame of the aforementioned type, characterized in that

the first panel contains at its edge along the edge of its inner side an assembly ridge, leaving a supporting surface of the edge, and

a locking groove at the base of the ridge along the inner edge of this panel,

the second panel contains along its inner edge a socket having a shape corresponding to the shape of the edge of the first panel, on the one hand, with a longitudinal assembly groove having a shape corresponding to the shape of the ridge, and, on the other hand, with an external abutment surface outside the groove for seating the abutment edge surface of another panel,

a locking groove in the second panel communicating with the assembly socket in a position corresponding to the position of the locking groove of the first panel when the two panels are connected, while the ridge of the first panel enters the assembly socket of the second panel and the abutment surface of the edge of the first panel is pressed into the outer abutment surface of the second panel while the locking grooves complement each other, forming a channel into which the locking key enters, while the connection of the ridge and the assembly groove provides locking in the second direction and the blocking tongue and blocks the connection in the first direction.

Assembling a furniture frame in accordance with the invention is extremely simple, since it is enough to connect various panels, for example, four panels forming a frame in the form of a parallelepiped. The frame in accordance with the invention does not require any assembly devices, called hardware, such as screws, studs, eccentrics, which complicate packaging and preparation for shipment from the factory, as well as assembly by a customer who, in principle, is not an expert in the field of assembly technology in carpentry .

In accordance with the invention, the assembly is carried out by means of a simple connection in the groove, while the connection angles (for example, 90 °) are guaranteed by a simple connection of the panels. In case of alignment errors along the connection line, the panel assembly can, if necessary, be very simply adjusted so that the front sides and rear sides of the panels are ideally in alignment.

After that, it is enough to block the connection by introducing a locking key into the channel formed by joining two locking grooves at the level of each corner of the connection.

If the frame contains a bottom extending into a groove made near the rear edge of each of the panels, the assembly becomes even easier since the panels are guided when connected also by the bottom of the frame inserted into the grooves.

Complete the assembly by introducing locking dowels into the frame connected to its bottom.

In the case of a frame with a bottom installed in an open groove in the form of a quarter, made along the rear edge of the panels, the assembly is carried out by simply connecting the panels, then blocking their connection, after which the bottom is set into a quarter, closing the ends of the locking keys.

According to a preferred feature, the locking grooves extend only on one side of the panels. Preferably, the locking grooves extend outward from the rear side of the panels, that is, behind the frame so that only the junction line between the ridge and its seat is visible on the front side of the frame, but so that the channel formed by joining the two locking grooves at the level of each corner is not visible. . Due to this, the appearance of the furniture in front is improved.

However, according to a preferred distinguishing feature, if for esthetic reasons it is desired to show the mouth of the channel on the front side, the locking grooves may occupy the entire length of the edge of the panels and extend outward on the front side. In this case, a decorative element can be installed in the channel, which emphasizes the corner of the furniture from the facade.

In this case, the locking key may have a length exceeding the length of the channel if it should extend in front, or a length shorter than the length of the channel so that the channel freely extends to the front side and so that a fastener, such as a screed, can be installed in the back of the element decorating the front side of the frame.

According to another preferred feature, the locking grooves have a rectangular cross-section, and the locking key has a rectangular cross-section equal to, taking into account the gap, the cross-section of the channel formed by the connection of the two locking grooves.

Thus, the key is tightly seated in the channel, and it strengthens the connection, blocking it and compensating for the possible gap.

According to another preferred distinguishing feature, the locking key ends at the back with a tab forming a support or stop for the end of the key's passage into the channel. This foot facilitates the insertion of the keys into the channel, especially if the section of the key corresponds exactly to the section of the channel, thereby increasing the bearing surface.

According to another preferred distinguishing feature, the locking grooves have a rectangular cross-section, and the locking key has a rectangular cross-section that does not exceed, taking into account the gap, the groove cross-section so that it can go into this groove before joining the panels without leaving the groove, and so that it can be push on the connection of the two grooves when the assembly of the panels is completed to block their connection.

This key can be installed in the locking groove after the manufacture of the panel so that the furniture frame panels can be packaged without worrying about the locking keys that the end user finds already in place. After assembling the panels, it is enough to push each locking key so that it can also go into another groove that forms the channel. This movement can be carried out using a rod inserted into the groove. The advantage of this embodiment is that the locking key is guaranteed to occupy the entire length of the groove and cannot wedge before reaching the end of the channel, in the event that any roughness can impede the movement of the key along the channel.

According to another preferred distinguishing feature, in the case of a frame equipped with a bottom inserted in a peripheral groove made near the edge of each of the panels, the bottom has a cutout near its corners, leaving the channel formed by the grooves open.

This embodiment makes it possible to precisely adapt the bottom dimensions to the height and width dimensions of the seat formed by peripheral grooves intended for its placement, so as to adapt the bottom as close as possible to the size of the shape formed by the grooves.

According to the most preferred distinguishing feature, the locking key ends with a locking element that engages at the end of the dihedral corner of the frame formed by the connection of the two panels, resting on the edge and entering the groove of the panels into which the bottom edges enter to lock the locking key. This locking element allows you to lock the locking key and to avoid its exit behind the frame under the influence of vibrating or other movements. The advantage of the locking element is also the possibility of locking the bottom in the peripheral groove of the walls to avoid possible vibration of the bottom.

This locking key equipped with such a locking element is simply installed by slightly deforming the locking element with respect to the key to move it to the inside of the dihedral angle surfaces formed by joining the two panels at the level of the frame angle, then the locking element returns to the internal support position side, on the top of the frame (usually the back side) and in the peripheral groove.

According to a preferred feature, the locking element comprises a large base in the form of an angle for flat support on the edges of the panels in their connection, forming an assembly dihedral angle, and this large base, made integral with the locking key, is continued by the connecting part in the form of a dihedral angle, which is pressed against the inner side of the panel connection in the form of a dihedral angle and on which a small base is made with protruding engagement plates extending into the peripheral groove in ory come bottom edge. This embodiment of the locking element provides excellent locking of this element on the inner side of the two panels at their connection.

According to another preferred distinguishing feature, a small triangular base forms a bottom inside the dihedral angle of the connecting part and comprises a drive recess. This recess allows the end of a tool, such as a screwdriver, to be inserted into the recess in order to slightly rotate or deform the small base of the locking element and remove the locking plates from the peripheral groove of the two panels, and then easily pull the locking element together with the locking key.

Although this extraction is simple, it does not violate the excellent engagement of the locking element, which rests on the edge of the panels and fits into the groove in which the edges of the bottom of the frame are located.

According to another preferred distinguishing feature, the large base extends beyond the connecting part in the form of a dihedral angle to a width corresponding to the width of the supporting surface of the ledge made in the edge of the panels.

Preferably, the large base of the locking element comprises a recess substantially opposite the recess of the small base for introducing the lever forming tool and to prevent it from slipping on the large side of the large base.

Preferably, the locking element has an asymmetric shape with respect to the two-sector plane of the connection of the two panels to which it is adjacent.

According to another preferred distinguishing feature, the locking key is made to be divided for its adaptation to the depth of the furniture, in particular, the key is divided into parts by local narrowing of the section, restricting segments, in particular segments of different lengths, to produce only one type of key and adapting it to the depth of furniture or frames by simply separating one or more segments.

Blueprints

The following is a description of embodiments of furniture frames in accordance with the invention with reference to the accompanying drawings, in which:

FIG. 1 is a sectional view of a part of two assembly panels of a furniture frame formed by panels, wherein the two panels intended to be connected are disconnected.

FIG. 2 is a schematic sectional view of the connection of two panels shown in FIG. one.

FIG. 3 (A, B) is an embodiment of an assembly groove and a locking groove of one of the panels, wherein in FIG. 3A shows milling an assembly groove, and FIG. 3B - milling of the locking groove.

FIG. 4 is a perspective view of a locking key for connecting panels in accordance with the invention.

FIG. 5 (A, B, C) is a comparison between the claimed compound and the known compound in the groove and flange, while to facilitate comparison in FIG. 5A shows a cross section of two panels in accordance with the invention before they are connected, FIG. 5B shows for comparison the traditional form of the joint in the groove and flange, and in FIG. 5C shows another type of known compound.

FIG. 6 (A, B, C, D) - an example of the claimed frame, front view:

FIG. 6A is an isometric front view of the frame,

FIG. 6B is a detailed view of the groove of the side panel,

FIG. 6C - the shape of the ridge and the locking groove of the lower panel of the frame on the left side,

FIG. 6D is an enlarged view of the lower right corner of the chassis shown in FIG. 6A.

FIG. 7 (A, B, C, D) - the frame with its rear side corresponding to the frame shown in FIG. 6:

FIG. 7A is an exploded view of a frame with a bottom panel,

FIG. 7B is a detailed view of the angle of the bottom panel cut out for passing the locking key,

FIG. 7C is a detailed view of the rear corner of the bottom panel of the frame,

FIG. 7D is a view of the lower corner of the side panel of the frame.

FIG. 8 (A, B, C) - various stages of assembly and blocking of the frame, rear view:

FIG. 8A - installation of the bottom in the groove of the lower panel and the corresponding side panel associated with the ridge on this side of the lower panel,

FIG. 8B - installation of locking keys in the four corners of the assembled frame, the bottom of which is installed in the peripheral grooves of the four panels,

FIG. 8C - insertion of a locking key into one of the locking sockets of the frame (upper left corner, rear side).

FIG. 9 (A, B, C, D) is another embodiment of the frame, the bottom of which is installed in the groove selected as a quarter:

FIG. 9A is a rear exploded view of the frame with a quarter groove,

FIG. 9B is a detailed view of the angle of the bottom panel of the frame showing the selected quarter,

FIG. 9C is an enlarged view of the lower rear corner of the side panel showing the selected quarter,

FIG. 9D - installation of the bottom in the groove in the form of a quarter and fastening with nails or paper clips.

FIG. 10 is a perspective view of the connection of two panels with a locking key equipped with a locking element fixed to two panels.

FIG. 11 (A, B) - installation of the locking key in the channel formed by two panels:

FIG. 11A - the locking key enters the channel, but the locking element is still above the edge of the connected panels,

FIG. 11B is the next step in introducing the locking key, wherein the locking element is moved by sliding along the inner side of the two panels at the level of their connection in the form of a dihedral angle.

FIG. 12 is a top view in section along the plane I of FIG. 10.

FIG. 13 is a top view in section along the plane II of FIG. 10.

FIG. 14 is a plan view of the corner joint shown in FIG. 10.

FIG. 15 is a plan view of a locking key equipped with its own locking element.

FIG. 16 is an isometric view of an embodiment of a locking key equipped with its own locking element.

FIG. 17 is an isometric view of a portion of a locking key according to an embodiment.

Description of embodiments of the invention

The object of the invention is a furniture frame formed by panels connected by their edges by joining in a groove and a ridge, in this case, a parallelepiped frame.

In FIG. 1 shows the connection area of two panels 10, 20 in accordance with the invention, characteristic of the connection of all four panels of the frame.

Typically, the frame includes four sides: two sides, top, bottom and bottom. However, the invention is not limited to such a parallelepiped design with panels at right angles. The angle between the two sides can differ from 90 °, and the panels can be connected with angles of 120 ° or 135 ° at octagonal or hexagonal sections. Such frames can be part of a modular kit or can be individual elements. The frames can be oriented, as usual, with horizontal ribs, but also with vertical ribs, forming, for example, the base of tables, in particular, low tables or armchairs.

The panels 10, 20 have an inner side 10a, 20a and an outer side 10b, 20b.

The first panel 10 contains a ridge 11, that is, a spike located in the extension of the inner side 10a of the panel 10. This ridge 11 is made along the entire length of the panel 10 and forms a front surface 12 and two supporting side surfaces 13, 14, one of which is connected to the supporting edge surface 15. The inner side 100 of the first panel 10 at the base of the ridge 11 contains a locking groove 16 parallel to the edge.

The second panel 20 contains, near its edge on the inner side 20a, a nest or cutout having a shape corresponding to the shape of the edge of the first panel, that is, a nest forming an assembly groove 21 for engaging the ridge 11, and outside the assembly groove, an internal abutment surface 25.

A large bearing surface 23, consisting of two parts 23a, 24b, and a small bearing surface 24 extend along the edge of the assembly groove 21.

The large supporting surface 23 includes a locking groove 25 in a position similar to the position of the locking groove 16 of the first panel 10, when both panels 10, 20 are connected, while the ridge 11 is inserted all the way into the assembly groove 21, and the supporting surface 15 of the edge of the first panel is pressed against the inner the supporting surface 25 of the second panel 20.

In this assembled position shown in FIG. 2, both locking grooves 16, 26 are connected and form a channel 30 parallel to the assembly axis and designed to accommodate the locking key 40.

Preferably, the locking grooves 16, 26 of the two panels 10, 20 stop immediately in front of one end of the two panels 10, 20, but exit through the other end of the panels. This allows you to enter the locking key 40 and to avoid its exit from one side of the connection (under the plane of Fig. 1), so the shape of the two assembly grooves 16, 26 is not visible at the end of the two connected panels 10, 20.

As shown in FIG. 1 and 2, after joining, both panels 10, 20 form a dihedral angle, the edge of which is the direction of the joint.

To facilitate understanding of the description, the first panel 10 has an X direction, and the second panel 20 has a Y direction, and these directions are in a plane perpendicular to the edge of the dihedral angle formed, which in this case is the plane of FIG. one.

The ridge 11 is connected to the assembly groove 21 in the Y direction, and this connection is blocked by a key 40 inserted into the channel 40 formed by the connection of the two assembly grooves 16, 26 in the X direction.

In FIG. 1 also shows that the inner supporting surface 25 of the second panel 20 is offset by a distance R from the plane of the inner side 20a of the panel 20. Accordingly, the supporting surface 15 of the edge of the first panel 10 is extended by a distance A, i.e., the ridge 11 is shorter than the known ridge.

In FIG. 3A, 3B schematically illustrate an assembly structure of a panel 20 and its assembly groove 21 with its locking groove 26.

According to this embodiment, the assembly groove 21 is first cut using the cutter FR1 (Fig. 3A), the cutter rotating around the axis Y1-Y1 parallel to the Y direction, also removing the part in front of the inner bearing surface 25 to obtain the backing part.

Then, using the cutter FR2, rotating around the axis X1-X1 (parallel to the axis X-X), pass the supporting inner surface 25 and cut out the locking groove 26.

In FIG. Figure 4 shows an example of a square-shaped locking key 40 with a pointed front end 41 containing a tab 42 at its rear end that serves as a support and abutment during insertion. The foot 42 is also used to disassemble the frame in order to facilitate removal of the keys.

Similar to FIG. 5A, 5B make it possible to compare the claimed compound (Fig. 5A) with the known compound in the groove and ridge (Fig. 5B). This comparison allows you to clearly see the main distinguishing features of the invention:

locking grooves 16, 26 forming a channel for introducing a locking key 40,

supporting surfaces 15, 25, one (15) of which is made extended (A), and the other (25) - retreating (R).

In the case of a known joint in the groove and the crest of the panels 100, 200, one of the panels (100) has a long crest 111, and the other (200) has a deep groove (221), since the inner side 200a is indented and the edge of the panel 100 is not extended parts under the crest 111.

This comparison allows the claimed connection to clearly see the shape of the socket 21 of the second panel 20, which is not limited only to the assembly groove 21, but contains a part indenting R in front of the inner supporting surface 25. This backing part R and the extended part A are indicated by dashed lines.

In FIG. 5C shows a flat connection using assembly hardware such as screws, pins, studs, eccentrics, and here all these hardware are presented as a screw 240 connecting panels 130, 230. This connection is difficult to prepare and requires the use of the aforementioned hardware.

In FIG. 6 shows a first embodiment of a frame 300 in the form of a parallelepiped consisting of two side walls 20A, 20B, a lower wall 10A and an upper wall 10B and a bottom 50. These walls are formed by panels joined by their sides by means of a joint in accordance with the invention. In FIG. 6A is an isometric view from the front. Connection details mainly described with reference to FIG. 1-5 are shown in FIG. 6B, 6C, 6D, where details of some parts of the walls and joints are shown, it being understood that the joints of all four corners of the frame are performed in exactly the same way.

The general arrangement of the side walls 20A, 20B, the lower wall 10A and the upper wall 10B corresponds to the basic principles of the furniture or frame construction: the bottom 10A and the top 10B do not connect the bottom and top of the side walls 20A, 20B, but rely on the inner side of these walls.

In FIG. 6B, the assembly groove 21 of the wall 20B extending outward from the front and the internal abutment surface 25 are shown in more detail and for the joint zone of the two walls.

In FIG. 6C shows a detail of the connection side of the panel 10A forming the lower wall of the frame 300. This side corresponds to the ridge 11, the geometric characteristics of which were indicated in connection with the description of FIG. 1-5. In this FIG. 6C also shows a locking groove 16 made at the base of the ridge 11. This groove 16 also ends in front of the front of the panel 10A. It does not go to the front side, but only to the back side (not shown in this figure).

In FIG. 6D shows the appearance of the connection of the two panels 10A, 20A at the level of the lower right corner, but two blocking grooves forming a blocking channel not visible from the front side of the frame are not visible.

In FIG. 7 shows the frame 300 from the rear side, which in this example contains a bottom 50 that fits into grooves 51-54, made near the rear edge of each of the four panels 10A, B, 20A, B.

In FIG. 7A is an exploded isometric view of four panels 10A, B, 20A, B forming a frame 300 and a bottom panel 50. Here, a groove 51 is shown adjacent to the rear edge of the lower panel 10A and a groove 52 is adjacent to the rear edge of the right side panel 20A.

Other panels 10B, 20B have grooves 53, 54 in the same position, forming a peripheral groove into which the edge of the panel forming the bottom 50 extends, for example, by simply connecting the shapes.

In FIG. 7B shows one of the angles 55 with a cutout of the bottom panel 50, made so that after installation in the grooves 51-54, the angle 55 does not go into the locking grooves 16, 26 and does not interfere with the insertion of the locking keys 40 into the channels 30, which are closed by connecting the corners.

In FIG. 7C shows in detail a groove 52 in a lower panel 10A that intersects the locking groove 16 along the assembly edge of this lower panel 10A.

In FIG. 7D shows the lower corner of the right side panel 20A, as well as the groove 52 into which the edges of the bottom panel 50 are inserted. This groove 52 does not intersect the inner abutment surface 25 of the edge of the side panel 20A, since the groove 52 for the bottom edge 50 has the same depth as and a groove 26 into which the locking key 40 is inserted, and as shown in FIG. 1, one of the sides of the locking groove is in the continuation of the inner supporting surface 25 only due to the fact that the locking groove is performed by milling, which leads to this coplanar arrangement.

In FIG. 8, in its parts 8A-8C, various steps are shown to continue assembling and locking the frame 300.

So in FIG. 8A shows the situation at the lower angle of the side panel 20B, with the bottom panel 50 inserted into its groove 51, and the cut corner 55 leaving the locking groove 16 at the base of the ridge 11 on this side of the lower panel 10A free. The cutout portion 55 of the bottom panel 50 is located above the surface of the bottom panel 10A so as not to intersect the locking groove 26 of the second panel 20B shown on the left.

In FIG. 8B shows the rear frame 300, the bottom 50 of which is installed in the grooves 51-54, and four panels 10A, B; 20A, B, connected by inserting each ridge into a corresponding groove. This figure also shows the locking keys.

FIG. 8C is an enlarged view of this locking key 40 in front of the locking channel 30. The locking key 40 is made in the form of a bar of a certain thickness ending in a gripping tongue 42.

In FIG. 9, in its parts 9A-9D, an embodiment of the frame 400 is shown which is different from the “grooved” frame 300 shown in FIG. 7 and 8, with its groove 61-64, made in the form of a quarter, into which the bottom 70 enters.

As shown in FIG. 9A, four panels 10AA, 10BB; 20AA, 20BB, intended for assembly, comprise a trailing edge that forms a groove in a quarter 61-64 for installing the bottom panel 70, the corners of which do not have cutouts in place of the locking grooves 16, 26.

In FIG. 9B shows a detail of the rear corner of the bottom panel 10AA with a locking groove 16 that extends behind the portion forming the quarter 61 groove (protrusion of the lower edge of the panel).

In FIG. 9C shows a lower side panel shape with a quarter groove. Other corners of the side panels and bottom panels have a similar design.

When the panels 10AA-20BB are assembled and locked, each with a locking key 40, a bottom panel 70 is inserted into the groove in the form of a quarter 61-64, which is simply installed in the quarter 61-64. It is secured with clips or pins 71, as shown in FIG. 9D.

According to an embodiment not shown in the figures, in one of the locking grooves, for example, in the locking groove 26, a locking key is inserted that does not come out of the opening of the groove, and since after joining the two panels, the comb 11 is in the stop position in the assembly socket 21, it is enough to lower the locking key by pushing it into the locking groove of the other panel 10 so that the key forms a lock that fits into the locking groove 16, while remaining in the locking groove 26. Preferably the locking groove it is inserted into the locking groove 26, which is parallel to the plane of the panel 20, and not into the locking groove 16 of the panel 10, since in this case it will be perpendicular to the plane of the panel, and too large a depth of the locking groove 16 will weaken the ridge 11; this does not happen in the case of the locking groove 26, which may have a much greater depth, without weakening the future assembly.

In FIG. 10 shows another embodiment of a locking key 40 for connecting two panels 10, 20, which differs from the one described above by the presence of a locking element 60 located at the rear end of the locking key 40, which itself remains the same. According to this embodiment, the edge 10-1, 20-1 of the two panels 10, 20 has a step that forms a peripheral abutment surface 10-2, 20-2 on all panels 10, 20 at the level of their edges 10-1, 20-1, usually at the edge level from the back of the frame.

In this case, the assembled frame is shown in a horizontal lying position.

In the example shown in FIG. 10, 11A, 11B of the edge 10-1, 20-1 with their ledge have a shape slightly different from what was shown in the previous figures, for example, in FIG. 8C. Indeed, the ledge has a milled portion that extends along the edge of the inner side of each panel so that the channel 30 intersects and exits on the supporting surface 20-2 (this outlet is not shown), and the ridge 11 partially intersects the ledge forming the supporting surface 20-2 . Crest 11 and assembly groove 21 are visible from above the assembly shown in FIG. 10.

The description of this embodiment of the key 40 with its locking element 60, presented for one corner of the frame, is applicable in the same conditions for other corners of the frame.

A locking key 40, shown inserted into the channel 30 (not shown), formed by connecting the two panels 10, 20, and having at its upper end corresponding to the rear side of the key, an engagement element that engages in the dihedral angle formed by the connection of the two panels and engages , on the one hand, relying on the edge 10-1, 20-1, that is, in this case, on the shoulder supporting surface 10-2, 20-2, and, on the other hand, engages the engagement plates 63-1 in the peripheral groove 51, 52 (53, 54), made in panels 10, 20 for installing the edges of the bottom 50 of the frame.

More specifically, the locking element 60 according to this embodiment has a large base 61 in the form of a corner to rest on the edge 10-1, 20-1 of the panels 10, 20, in this case on the supporting surfaces 10-2, 20-2 formed by ledges edges 10-1, 20-1. This large base 61 is connected to the upper end (according to the orientation of this figure) of the locking key 40; as a rule, this upper end is the rear end of the key, since the edges 10-1, 20-1 correspond to the rear side of the frame through which the locking keys 40 are inserted.

The large base 61 has a connecting part 62 in the form of a dihedral angle, which rests on the inner sides of the panels 10, 20 under the supporting surfaces 10-2, 20-2. This connecting portion 62 in the form of a dihedral angle has a height (h) substantially corresponding to the distance separating the edge 10-1, 10-2 (or in this case the supporting surface 10-2, 20-2) from the edge of the groove 51, 52. On the end of this connecting portion 62 is a small base 63 of triangular shape, overlapping the bottom of the dihedral angle and continued beyond the connecting portion 62 by two protruding engagement plates 63-1 extending into the groove 51, 52 of the panels 10, 20 above the bottom 50.

As a rule, the peripheral groove 51-54 is wide enough so that the bottom 50 can be easily inserted into it, and free space is occupied by engagement plates 63-1, 63-2 on both sides 62-1, 62-2 of the connecting part 62 in the form dihedral angle. In this case, the small base 63 occupies the inner space of the dihedral angle with its inner part 63-3, containing a recess 63-4, which allows you to release the locking element 60 and remove the locking key 40.

For this unlocking, a tool is used, symbolically shown by line 64 and representing a tool forming a lever, such as a screwdriver, the “lower” end of which is inserted into the recess 63-4 and which is pressed onto the edge of the large base 61, moving the lever, pushing it in the direction arrows F, to remove the engagement plates 63-1 from the groove 51, 52, which allows the locking element 60 to be pulled upward together with the locking key 40. To guide the tool 64 and avoid slipping in one direction or the other, on the side of the large base 61, a cutout 61-3 is provided. This unlocking movement is the rotation of the connecting part 62 around the connection with the large base 61, or even the rotation of the entire locking element 60 around its connection with the end of the locking key 40, or the elastic deformation of these components, using in some cases a certain flexibility of the material.

As shown in FIG. 10, the locking element 60 has a large base 61 in the form of a corner, the side 61-1 of which is connected to the locking key 40, while the other side 61-2 remains free. Similarly, the diagonal angle connecting portion 62 has two walls 62-1, 62-2, but, according to an embodiment not shown, the locking element 60 can be limited to only one diagonal angle connecting wall 62-1 of the connecting portion with a large base 61, which, in turn, is limited practically by its side 61-1. The same applies to the small base 63, limited only by its side with a plate 63-1 corresponding to the side 61-1 of the large base. In this case, the locking element also rests on the edge 20-1 of the panel 20 or on its supporting surface 20-2 according to the presented example, and its plate 63-1 goes into the groove 52 above the bottom 50 to lock the locking key 40.

Preferably, to lock the locking element 60, the sides 61-1, 61-2 of the large base 61 protrude relative to the connecting part 62 to a length substantially equal to the width (l) of the supporting surfaces 10-2, 20-2.

The installation of the locking key 40 with its locking element 60 is presented in two steps in FIG. 11A, 11B.

In FIG. 11A shows the insertion of the locking key 40 into the channel 30, while the end of the key 40 remains outside the connection of the panels 10, 20. Then, continuing to insert the key 40, the locking element 60 is slightly retracted and moved by sliding the edges of its two engagement plates along the inner surface of the two panels 10, 20 until the plates 63-1, 63-2 are in front of the groove 51, 52 of the two panels 10, 20 above the bottom 50 and can go into this groove. In this position, the bottom of the sides 61-1, 61-2 of the large base 61, which extend beyond the sides 62-1, 62-2 of the connecting part 62 of the element, rests on the supporting surfaces 10-2, 20-2. Thus, the locking element 60 simultaneously forms a wedge for the bottom 50 and the locking means of the locking key 40, since it cannot come back (from the edges 10-1, 10-2) under the action of movements or vibrations to which the frame can be subjected.

In FIG. 12 is a sectional view illustrating a connecting portion 62 in the form of a dihedral angle with its small base 63 extended from the “outer” side by engagement plates 63-1, 63-2. This figure also shows the inner part 63-3 with a recess 63-4, as well as the locking key 40 in section along the plane I.

The triangle shown by the dashed line is the outline of the large base 61, which is not visible in this figure, which is a sectional view from above.

FIG. 13 is a sectional view from below along plane II, where the connecting part 62 is shown in the form of a dihedral angle in the section, as well as the locking key 40. Here you can also see the large base 61 with its two sides 61-1, 61-2, as well as a recess 63-4.

In FIG. 14 is a plan view of the assembly and various of the above and hidden elements are shown. The recess 63-4 is visible due to the presence of a cutout 61-3 made in a large base 61.

In FIG. 15, a bottom view shows a locking key 40 with its locking member 60.

In FIG. 16 shows a variant of the locking key 40 and its locking element 60, in which the small base 63 does not contain the inner part 63-3 and the recess 63-4, and other parts identical to those described above have the same designations.

As shown in FIG. 17, the key 40A is a key that can be divided into fragments so that its length can be easily adapted to the depth of the frame based on the key of a standard length.

This key is divided by local narrowing of section 41-1, 41-2 (41-i), uniformly or unevenly distributed along the base length of the keys 40A and forming segments (42-1, 42-3 ... 42-i) of the same or different length Li for better adaptation to the depth of the frame.

The segments so delimited have a length Li, and the narrowing of section 41-i is formed by recesses obtained by forming the tongue 40A.

The narrowings of section 41i have rounded A1B1 (AiBi) surfaces in order to avoid any engagement in the channel formed by joining the two panels of the frame and intended for mounting the keys.

SPECIFICATION

10 first panel

10A bottom wall

10V top wall

10AA bottom wall

10BB top wall

10a inner side

10b outside

10-1 edge

10-2 abutment surface

11 comb

12 front side of the ridge

13 lateral bearing surface

14 lateral bearing surface

15 edge support surface

16 locking groove

20 second panel

20a inner side

20b outside

20A, 20B side wall

20АА, 20ВВ side wall

20-1 hem

20-2 abutment surface

21 assembly groove

22 bottom of the groove

23 large bearing surface

23a part of a large bearing surface

23b part of the large bearing surface

24 small bearing surface

25 inner bearing surface

26 locking groove

30 channel

40 locking key

41 front end keys

42 rear end foot

50 bottom of the frame

51-54 groove for the bottom

60 locking element

61 large base

61-1 side

61-2 side

61-3 neckline

62 dihedral corner connecting part

62-1 side

62-2 side

63 small base

63-1 engagement plate

63-2 engagement plate

63-3 inner part

63-4 recess

71 pin, scraper

100 panel

200 panel

211 comb

221 groove

130 panel

230 panel

240 connecting hardware

300 frame with a bottom and a groove

400 frame with a bottom and a quarter groove

Claims (13)

1. A furniture frame formed by panels connected by their edges by joining in a groove and a ridge in which
- the first and second panels are connected through the edge of the first panel adjacent to the inner edge of the second panel, thus forming a dihedral angle, while the first panel has a first direction (X) and the second panel has a second direction (Y) in a plane perpendicular to the direction of the rib dihedral angle formed by joining,
characterized in that
A. the first panel (10) contains on its edge along the edge of its inner side an assembly ridge (11), leaving the abutment surface (15) of the edge extended forward (A), and
a locking groove (16) at the base of the ridge (11) along the inner edge (10a) of this panel (10),
B. the second panel (20) contains along its inner edge (20a) a socket (21, 25) having a shape corresponding to the shape of the edge (11, 15) of the first panel (10), on the one hand, with a longitudinal assembly groove (21) having a shape corresponding to the shape of the ridge (11), and, on the other hand, with an outer abutment surface (25) outside the groove (21) that extends backward (R) to fit the abutment surface (15) of the edge of another panel (10),
C. a locking groove (26) in the second panel (10) in communication with the assembly socket (21) in a position corresponding to the position of the locking groove (16) of the first panel (10) when both panels (10, 20) are connected, with the ridge (11) of the first panel (10) enters the assembly socket (21) of the second panel (20), and the forward surface (15) of the edge (15) of the edge of the first panel (10) is pressed against the outer backward (R) supporting surface (25) ) of the second panel (20), while the locking grooves (16, 26) complement each other, forming a channel (30) into which the locking key enters (40), the connection of the ridge (11) and the assembly groove (21) provides locking in the second direction (Y), and the locking key (30) blocks the connection in the first direction (X). 2. Furniture frame according to claim 1, characterized in that the locking grooves (16, 26) open only on one side of the panels (10, 20). 3. The furniture frame according to claim 1, characterized in that the locking grooves (16, 26) have a rectangular cross-section and the locking key (40) has a rectangular cross-section equal to the cross-section of the channel (30), taking into account the gap, formed by connecting two locking grooves (16 , 26). 4. Furniture frame according to claim 1, characterized in that the locking key (40) ends with a tab (42) forming the back support and the stop of the end of the locking key (40) entering the channel (30). 5. Furniture frame according to claim 1, characterized in that the locking grooves (16, 26) have a rectangular cross-section and the locking key (40) has a rectangular cross-section that does not exceed the groove cross-section (16, 26), so that it can go in into this groove before connecting the panels (10, 20), without leaving the groove, and so that it can be pushed at the connection of two grooves (16, 26) forming a channel (30) after connecting the panels (10, 20) to block them compound. 6. Furniture frame according to claim 5, characterized in that the locking key (40) has a cross-section equal to the cross-section of the second locking groove extending into the assembly groove (21) of the second panel (20). 7. The furniture frame according to claim 1, characterized in that it contains a bottom (50) inserted into peripheral grooves (51-54), made near the rear edge of the panels, and the corners of the bottom (50) have cutouts (55) so as not to overlap a channel (40) formed by joining grooves (16, 26) at the level of each corner of the frame. 8. Furniture frame according to claim 1, characterized in that the locking key (40) ends with a locking element (60) that engages at the end of the dihedral corner of the frame formed by the connection of two panels (10, 20), resting on the edge (10-2, 20-2) and going into the groove (51-54) of the panels, into which the edges of the bottom (50) go, to lock the locking key (40). 9. Furniture frame according to claim 8, characterized in that the locking element (60) contains a large base (61) in the form of a corner for flat support on the edge (10-1, 20-1) of the panels (10, 20) in their connection forming an assembly dihedral angle, and this large base (61), rigidly connected to the locking key (40), is continued by the connecting part (62) in the form of a dihedral angle, which is pressed against the inside of the panel connection (10, 20) in the form of a dihedral angle and on which a small base (63) with protruding engagement plates (63-1, 63-2) is made, as coming into the peripheral groove (51-54) which enter the bottom edges (50). 10. Furniture frame according to claim 9, characterized in that the small base (63) of a triangular shape forms the bottom (63-3) inside the dihedral angle of the connecting part (62) and contains a drive recess (63-4). 11. Furniture frame according to claim 9, characterized in that the large base (61) extends beyond the connecting part (62) in the form of a dihedral angle to a width (I) corresponding to the width of the bearing surface (10-2, 20-2) of the ledge made in the edge (10-1, 20-1) of the panels (10, 20). 12. Furniture frame according to claim 1, characterized in that the locking key (40A) is made with the possibility of division for its adaptation to the depth of the frame. 13. The furniture frame according to claim 12, characterized in that the locking key (40A) is divided into parts by local restrictions (41-i) of the section, limiting segments (42-i), in particular segments of different lengths.

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