CN117980578A - Lift door moving device - Google Patents

Abstract

A lifting door moving device (100) for a door (6) of a kitchen, bathroom, living room furniture or any general furniture, comprising a container (10), the container (10) being intended to be attached to a frame of the furniture, in particular to one of the sides (4) of the frame, the container interior (10) comprising a mechanism hinged directly or indirectly to the container (10) by means of an arm about a fulcrum pin (13) on the door (6), wherein the fulcrum pin (13) is provided integrally with a cam (14), the cam (14) being able to cooperate with an element (35) of a sliding plate (30), the sliding plate (30) being slidably housed in the container (10); under the action of at least one spring (40), the spring (40) acts between the container (10) and the sliding plate (30), and the direction of action of the spring (40) is along the direction opposite to that of the element (35), during the opening and closing of the door, the action of the cam (14) and the at least one spring (40) balances the weight of the door in each position, an arc seat (19) is provided in the container (10), the arc seat (19) is arranged around the fulcrum seat (24) for accommodating the fulcrum pin (13) with the axis (r) of the fulcrum pin as the center, the profile of the arc plate (50) is arranged corresponding to the curved profile of the arc seat (19), at the final stage of rotation of the arm (20), the arc plate (50) is driven by the cam (14) so as to move along the profile of the arc seat (19), and when the door is closed, the arc plate (50) compresses the damper (52) so as to damp the door.

Description

Lift door moving device

Technical Field

The invention relates to a lifting door moving device, which is applied to the doors of kitchen, bathroom, living room furniture or any general furniture.

Background technique

Currently, lift gate moving devices are understood to be any of the following examples:

- Upward flap opening: the door leaf is hinged to the top of the furniture item, as shown in Figure 1a;

-Vertical opening: the door leaf moves vertically, as shown in Figure 1b;

- Pivot opening: the door leaf rotates and translates vertically, as shown in Figure 1c;

-Combined opening: a pair of door leaves rotate and translate vertically together, as shown in Figure 1d.

There are various devices for moving the doors of the above-mentioned different types of furniture, which can balance the weight generated by the operation of the user in each position during the opening process of the door leaf, but do not allow the door to be in the fully open (or fully closed) position when the operation is interrupted.

Examples of similar devices are disclosed in EP1507944B1, EP2821578B1, and DE202005020862U1.

Besides the undoubted ergonomic advantage of not requiring the user to close the door from the fully open position, these devices also have the characteristic of perfectly balancing the weight of the door leaf in any position. Therefore, the user feels almost zero weight, making it easy to use.

The drawback of the above-mentioned mechanical devices that meet this requirement is that their overall size in the storage room is large, thus occupying the space available for efficient use of the furniture. This is basically due to the need to guide and maintain the elastic element inside the seat body to generate the energy for balancing the weight of the door.

In the prior art, these devices have, in addition to a specific box for housing the elastic element, a container configured to house the device components, and therefore, the box itself. Given the need to house the device, it would be ideal for the device container itself to serve as a guide and container for the elastic element that opens the door.

Furniture design is constantly evolving, with the trend increasingly towards hiding the mechanisms needed to move doors, and obviously a device that can be fully or partially hidden on the side fills this need.

Summary of the invention

The object of the present invention is to provide a lift door moving device which eliminates the disadvantages of the above disclosed prior art mechanisms.

More specifically, an object of the invention is to propose such a device which has a smaller overall thickness dimension so as to occupy only a minimum space inside an object such as furniture and thus be almost hidden in the sides of the interior.

Another object of the present invention is to provide such a device which ensures that the weight of the door is balanced in each position when it is opened and closed, and which avoids sudden jerk during opening and provides a cushioning effect during closing.

A further object of the present invention is to provide such a device which is simple and inexpensive to manufacture and which is easy to assemble and install.

Another object of the present invention is to provide a lifting door moving device, which can be used for all types of doors mentioned above: upward flip opening, vertical opening, pivot opening, and combination opening.

These and other objects of the invention are achieved by the features of independent claim 1.

Preferred embodiments of the invention are disclosed by the dependent claims.

Basically, the lifting door moving device of the present invention is applied to the door of kitchen, bathroom, living room furniture or any general furniture, comprising a container, which can be attached to the frame of the furniture, in particular to one of the side edges of the frame, and the container contains a mechanism, which is directly or indirectly hinged to the container by an arm around a fulcrum pin on the door, wherein the fulcrum pin is integrally arranged with a cam, and the cam is capable of cooperating with an element of a sliding plate, and the sliding plate is slidably accommodated in the container; under the action of at least one spring, the spring acts between the container and the sliding plate, and the spring acts in a direction opposite to the element, and during the opening and closing process of the door, the action of the cam and the at least one spring balances the weight of the door in each position; an arc seat is arranged in the container, and the arc seat is arranged around the seat body for accommodating the fulcrum pin with the axis (r) of the fulcrum pin as the center, and the contour of the arc plate is arranged corresponding to the curved contour of the arc seat, in the final stage of the rotation of the arm, the arc plate is driven by the cam to move along the contour of the arc seat, and when the door is closed, the arc plate compresses the damper, thereby causing the door to generate damping.

BRIEF DESCRIPTION OF THE DRAWINGS

Further features of the invention will become more apparent from the following detailed description, given purely by way of non-limiting example, with reference to one of its embodiments, illustrated in the accompanying drawings, in which:

1a to 1d schematically show various types of lift doors to which the moving device of the present invention can be applied;

FIG2 is a partial isometric view of a piece of furniture with a door, in which some parts are hidden and some parts are shown in a transparent form, and the furniture is provided with the device of the present invention when the door leaf is opening;

FIG3 is a side cross-sectional view of the furniture of FIG2 ;

FIG4 is a plan view of the container of the mechanism of the device of the present invention, at this time in the opening or closing stage and the door leaf moving arm is in the middle position, where the cover is hidden;

FIG5 is an exploded isometric view of the various components of the mechanism of the device of the present invention;

FIG6 is an exploded schematic diagram of the sliding plate in FIG5 ;

6a, 6b and 6c are respectively a top view, a front view and a left view of the assembled sliding plate in FIG. 6;

FIG7 is an exploded isometric view of the pivot point of the articulated arm shown in FIG5 ;

Fig. 7a, Fig. 7b and Fig. 7c are respectively a top view, a front view and a left view of the pivot structure in Fig. 7;

8, 9, 10 and 11 are plan views of FIG. 4 with the hinge arms hidden, showing the positions of the various components in successive stages starting from the door fully open state to the door fully closed state.

Detailed ways

In Figures 2 and 3, purely by way of example, the device of the present invention is applied to furniture having a folding lifting door of the type shown in Figure 1d, it being understood that it can be used without substantial modification to move doors having different lifting modes, as shown in Figures 1a-1c.

With reference to Figures 2 and 3, there is shown a piece of furniture, generally indicated by reference numeral 1, comprising a fixed frame consisting of a lower wall or frame 2, an upper wall or frame 3, two side walls or sides 4, one of which is concealed to show the device of the invention, indicated by reference numeral 100, and a possible rear wall 5. A door 6 is provided at the front of the piece of furniture 1, which in this case is divided into two half-doors, an upper half-door 6a and a lower half-door 6b. The upper half-door 6a is pivotally connected to the frame 3 of the piece of furniture 1, and the two half-doors are hinged to each other by means of a lever system 7, the whole being essentially prior art and therefore not further described.

The device 100 of the invention, as can be seen more clearly in FIGS. 4 to 11 , is used to balance the weight of the door 6 in any position during the opening and closing movements, and comprises a box-like container 10 acting on the door 6 via an arm 20 , hinged to the lever system 7 or acting directly on the door 6 .

The container 10 is fixed to the frame of the piece of furniture 1, in this case to the side wall or edge 4, and comprises two half-shells of adapted shape, one of which is substantially identical to the other, referred to for convenience only as a base 10' and a lid 10", between which the various components of the mechanism are housed and to which an arm 20 is pivotally connected.

In particular, as shown in FIG. 4 , the arm 20 is integrally provided with the pin 13 and is mounted between the half-shells so as to be able to rotate freely relative to the half-shells. A cam 14 of adapted shape is integrally provided with the pin 13, which is able to withstand the forces required to support the door 6, as will be explained in more detail below. Referring to the exploded view of FIG. 5 , a plate 30 with a rectangular frame shape is provided between the two half-shells 10 ′ and 10 ″, the plate 30 having a large window 31, which is defined by two longer horizontal sides 32 and two shorter vertical sides 33 and 34 (refer to the arrangement of FIG. 4 ), the two longer horizontal sides 32 being slidably accommodated in the corresponding longitudinal guides 15 of the container 10, and the two shorter vertical sides 33 and 34, which are respectively provided at the rear and front sides of the container 10 when viewed from the front of the furniture 1.

On the front side 34 of the sliding plate 30 a roller 35 is mounted which is arranged integrally with the profile of the cam 14 and interacts with the pin 13 as will be explained in further detail below.

A pair of springs 40 are arranged in the windows 31 of the sliding plate 30 and are housed in corresponding seats 16 formed inside the two half-shells 10 ′ and 10 ″.

One end of the spring 40 acts on the stopper 17 arranged in the half shell, and the stopper 17 is arranged at the front end of the seat body 16, where a component for adjusting the spring preload is provided, and the other side of the spring 40 acts on the rear side 33 of the sliding plate 30 through the stopper 41.

The assembly for adjusting the spring preload comprises a screw 42 arranged on each spring and acting on and screwed into a sliding element 43. The screw 42 is axially fixed between the two half-shells and has a toothed head 44 so that its rotation axis can be adjusted with a common cross screwdriver. The rotation of the screw 42 causes the sliding element 43 to translate, thereby adjusting the preload of the corresponding spring 40.

The spring 40 acts between the fixed slot 17 and the support 41 , which is integrally arranged with the sliding plate 30 . As described above, the sliding plate 30 translates in two directions along the longitudinal guide rail 15 , causing the spring 40 to be compressed/stretched.

During the rotation of the arm 20 , the cam 14 of the pin 13 slides along the roller 35 , and through the sliding plate 30 slides along the guide rail 15 under the action of the spring 40 , transmitting to the arm 20 a torque that varies with the position of the cam 14 .

The profile of the cam 14 is configured to keep the door 6 perfectly balanced at any position along the opening arc, so that if the user's action is interrupted, the door 6 can remain balanced and not move until the user continues to open the door 6, and the door 6 continues its travel. The same is true during the closing stage of the door 6.

Relative arc seats 19 (only one is visible in FIG. 5 and partially visible in FIG. 6 ) are arranged in the half shells 10 ′ and 10 ″, and the arc seats 19 are arranged around the seat body 24 of the pin 13 with the axis (r) of the pin as the center, and the contour of the arc plate 50 is arranged corresponding to the curved contour of the arc seat 19.

These plates 50 clamp the sliding plate 30 and are driven by the cam 14 along the profile of the arcuate seat 19 during the rotation of the arm 20 .

In the final stage of closing of the door 6, the plate 50, through the stop element 55 sliding parallel to the longitudinal axis (s) of the device, compresses the damper 52 located in the groove 54 between the relative seats 53 of the half-shells 10 ′ and 10 ″ and below or above the sliding plate 30, and acts on the guide rod 56, thereby damping the door 6.

6, 6a-6c, a specific embodiment of the sliding plate 30 is described in more detail.

The sliding plate 30 is composed of two identical plates 30' and 30", and the two plates 30' and 30" are basically symmetrical with respect to the longitudinal axis (s). The two plates 30' and 30" are provided with: grooves 54' and 54", thereby forming the groove 54 of the sliding plate 30, and the groove 54 is used to accommodate the damper 52; spacer bosses 57' and 57", holes 58' and 58" are used to accommodate the pin 37 supporting the roller 35; and side planes 38' and 38", when the two plates 30' and 30" abut against the two side planes 38' and 38", the roller 35 can rotate freely around the pin 37 in a direction parallel to the axis (r).

7, FIG. 7a-7c, shows a specific embodiment of the pin 13 and the cam 14 provided integrally therewith.

The pin 13 consists of two parts: one part 13' is used to engage with the hinged arm 20 as a whole, and is described here by taking a square as an example; the other part 13" is cylindrical and is integrally arranged with the cam 14 for installation in the half shells 10' and 10", so that it can rotate freely around the axis (r).

The cam 14 has an arcuate profile 11 which slides on the roller 35, with the edge of the profile being at different distances from the axis (r), so that the spring 40 has a preset length, thereby transmitting the correct torque to the arm 20 to support the weight of the door 6 in different positions during the opening/closing movement.

The cam 14 has a through hole 12 on its wall, and an eccentric recess 12' is provided on each of the two side surfaces of the through hole 12, in which a cylindrical pin 60 is provided, and the axis of the pin 60 is eccentric relative to the rotation axis (e) of the cylindrical shaft 61 forcibly inserted into the through hole 12, so that the pin 60 cannot rotate freely, but can only rotate by the torque generated by a tool, for example, the tool engages with the cross groove 62 on the pin 60.

The cylindrical shaft 61 disposed on one of the two pins 60 has a shaft hole 63 with a polygonal cross section, which is engaged with a small shaft 63 ′ with the same cross section disposed on the other pin 60 .

The cylindrical pin 60 engages with the plate 50 during a portion of the closing movement of the door 6, thereby activating the action of the damper 52 through the stop element 55. The eccentricity of the cylindrical pin 60 relative to the axis of rotation (e) enables it to engage with the plate 50 earlier or later, thereby causing the damper 52 to act earlier or later.

8 to 11 , the working principle of the device of the present invention during the closing movement of the door 6 is explained below.

Fig. 8 shows the device in the fully opened position. The cam 14 interacts with the roller 35 to place the spring 40 in a state of maximum tension.

After the arm 20 rotates counterclockwise, further reference is made to FIG. 9 showing an intermediate position of a typical closing process, in which the cam 14 is in a different position, resulting in a different position of the sliding plate 30 and a different tension state of the spring 40 (beginning to be compressed), the different tension states matching the weight of balancing the door 6 in this particular position.

10 and 11 show the end of the closing phase when the damper 52 intervenes, more specifically FIG. 10 shows the cam 14 bringing the eccentric pin 60 into contact with the corresponding plate 50 which acts on the guide rod 56 of the damper 52 via the stop element 55 .

At the beginning of the damping phase, the damper 52 is fully extended.

In the following FIG. 11 , the closing process has been completed and the damper 52 is fully compressed by the stop element 55 .

It should be noted that in these figures, the eccentric pin 60 is in the most advanced position of the action of the damper 52. By acting on the eccentric, its action can be delayed, thereby reducing the compression of the damper itself.

Starting from the state of FIG. 11 , opening the door 6 causes the arm 20 to rotate clockwise, the path of the cam 14 being opposite to the previous path, until the state of FIG. 8 is reached.

The device of the invention, comprising the half-shells 10' and 10" of the container 10 and the plates 30' and 30" of the sliding plate 30, is shaped so that it can be installed indifferently on the left or right side of the furniture, simply by rotating it 180° about its longitudinal axis and shifting the position of some components, such as the damper 52 and the element driving it. The only component that needs to be replaced is the pin 13 with the cam 14.

From what has been disclosed, the advantages of the device of the invention are evident, the components of which are not arranged in a box and then in an external container, as is the case in the prior art, but are arranged directly in a container, which is of a suitable shape and which itself serves as a guide and container for the elastic element for opening the door. In this way, the overall dimensions of the device are greatly reduced and it can be concealed in the side of a piece of furniture.

In the above, the container (10) is described as being realized in two half shells, although in theory it could be realized in a single shell.

Of course, the present invention is not limited to the specific embodiments described above and shown in the drawings, but may be modified in many details within the capabilities of a person skilled in the art without departing from the scope of protection of the invention defined in the appended claims.

Claims (10)

1. A lifting door moving device (100), applied to the door (6) of kitchen, bathroom, living room furniture or any general furniture, comprising a container (10), the container (10) being attachable to the frame of the furniture, in particular to one of the side edges (4) of the frame, the container (10) containing a mechanism inside, the mechanism being directly or indirectly hinged to the container (10) around a fulcrum pin (13) on the door (6) by an arm (20), wherein the fulcrum pin (13) is integrally arranged with a cam (14), the cam (14) being able to cooperate with an element (35) of a sliding plate (30), the sliding plate (30) being slidably accommodated in the container (10); under the action of at least one spring (40), the spring (40) acts between the container (10) and the sliding plate (30), And the direction of action of the spring (40) is along the opposite direction to the element (35). During the opening and closing process of the door, the action of the cam (14) and at least one of the springs (40) balances the weight of the door at each position. It is characterized in that an arc seat (19) is arranged in the container (10), and the arc seat (19) is arranged around the seat body (24) for accommodating the fulcrum pin (13) with the axis (r) of the pin as the center. The contour of the arc plate (50) is arranged corresponding to the curved contour of the arc seat (19). In the final stage of the rotation of the arm (20), the arc plate (50) is driven by the cam (14) to move along the contour of the arc seat (19). When the door is closed, the arc plate (50) compresses the damper (52), thereby causing the door to generate damping. 2. The device (100) according to claim 1 is characterized in that the damper (52) is accommodated in a seat (53) of the container (10) and is arranged in a lower groove (54) of the sliding plate (30). 3. The device (100) according to claim 1 or 2 is characterized in that the cam (14) has an eccentric pin (60), and in the final stage of the rotation of the arm (20), the eccentric pin (60) engages with the arc plate (50), and the eccentric pin (60) is adjusted to advance or delay its collision with the arc plate (50), so that the damper (52) can take effect earlier or later. 4. The device (100) according to any of the preceding claims, characterized in that the arc-shaped plate (50) drives the damper (52) via a stop element (55), the damper (52) being provided with a guide rod (56). 5. The device (100) according to any of the preceding claims is characterized in that the frame shape of the sliding plate (30) is rectangular and has a large window (31), the window (31) being defined by two horizontal sides (32) and two vertical sides (33, 34), the two horizontal sides (32) being slidably arranged in corresponding longitudinal guides (15) of the container (10), wherein the vertical sides (34) are provided with the element (35) for abutting against the cam (14). 6. Device (100) according to any preceding claim, characterised in that the element (35) intended to abut against the cam (14) is a roller. 7. The device (100) according to claim 5 or 6 is characterized in that at least one of the springs (40) is arranged in the window (31) of the sliding plate (30), the spring (40) is arranged in the seat (16) inside the container (10), and one side of the spring (40) acts on the other vertical side (33) of the sliding plate (30) through a corresponding stopper (41), and the other side of the spring (40) abuts against the stopper (17) of the container (10), on which a component (42, 43) for adjusting the spring preload is arranged. 8. The device (100) according to claim 7 is characterized in that the component for adjusting the spring preload force includes a screw (42) and a sliding element (43), the screw (42) acts on the sliding element (43) screwed thereon, the screw (42) is axially fixed relative to the container (10), and the screw (42) has a toothed head (44), and a tool can be used to act on the toothed head (44) to adjust it along the direction of its own axis. 9. Device (100) according to any of the preceding claims, characterized in that the sliding plate (30) consists of two identical plates (30', 30") which are arranged substantially symmetrically about the longitudinal axis (s). 10. Device (100) according to any of the preceding claims, characterized in that the container (10) consists of two substantially identical half-shells (10', 10").