RU205971U1 - Support mechanism for transforming sofas - Google Patents

Abstract

The claimed utility model relates to furniture production, namely to devices for transforming upholstered furniture of the "dolphin" type. The support mechanism for transforming sofas includes a roll-out support, a support rod connected to the roll-out support by means of a pivot connection, and a rod stopper connected to a support rod through a pivot connection. The roll-out support is equipped with a roller and a protrusion to rest against the sliding part of the sofa seat frame. The support rod contains a crescent-shaped slot made with the possibility of engaging with a control rod located on the frame of the sofa, and contains a shaped groove. The thrust stopper is made in the form of an earring with a sickle-shaped slot, made with the possibility of engaging with a control rod located on the frame of the sofa and contains an L-shaped shaped groove. In the curly grooves of the support rod and the rod stopper there is an axis of the guide wheel made with the possibility of moving along the guide of the sofa frame. The roll-out support is connected to the pull-out part of the sofa by a hinge joint. The technical result of the claimed utility model is to increase the reliability of the sofa folding mechanism. 6 ill.

Description

Technology area

The claimed utility model relates to furniture production, namely to devices for transforming upholstered furniture of the "dolphin" type.

State of the art

In the prior art, a device for transforming upholstered furniture "dolphin" (RU 167310 U1) D1 is known, which contains a stationary part of the frame connected to each other with the first part of the berth attached to it, as well as a retractable part of the frame with the second part of the berth attached to it, with the possibility moving the extendable part of the frame from the folded position to the unfolded position, and vice versa, in which the stationary part of the frame is made with the possibility of placing the extendable part of the frame in the folded position, and the extendable part of the frame is made with the possibility of telescopic movement along the guides made in the sidewalls of the stationary part of the frame characterized in that in each sidewall of the stationary part of the frame are installed at least two guides, the first and the second, one above the other, with a gap in height, as well as at least one limiter for the movement of the extendable part of the frame, which is installed between the first and second guides, closer to the rear edge of the sidewall; the retractable part of the frame contains the frame of the second part of the berth, on which the second part of the berth is fixed, a base consisting of a front part, a rear part, as well as two side parts, on each of which at least one floor support roller is installed, and also one guide element installed with the ability to move between the first and second guides of each of the sidewalls of the stationary part of the frame, while the frame of the second part of the berth of the extendable part of the frame is pivotally connected to the base of the extendable part of the frame with the possibility of rotation relative to the base of the extendable part of the frame to the unfolded position behind account of at least two rotary mechanisms installed symmetrically, one on each side of the base of the extendable part of the frame in such a way that each rotary mechanism is pivotally connected both to the side part of the base of the extendable part of the frame and to the frame of the second part of the berth of the extendable part and frame.

The disadvantages of the solution disclosed in D1 is that the diagonal skew of the movable part of the frame is possible when it moves inside the stationary part of the frame, followed by jamming of the mechanism. This disadvantage is formed by fixing the guiding elements of the movable part of the frame only in one (horizontal) plane.

The closest analogue is the design of the mechanism for transforming furniture from a sitting position to a lying position and vice versa is the patent PL 200966 B1, “A folding support with a furniture roller on high legs, which allows transforming furniture from a sitting position to a lying position, having a body with side elements, a seat, a backrest and a folding support with a wheel, while the guides are installed on the sides of the body. To the frame, at one end, a main wheel is attached, guided along a guide, and a folding support with a wheel, attached at the other end to the axis of rotation and at the same time pivotally connected by a pin to the control lever located in the frame. A control lever with a steering wheel is mounted on a common axle with a steering wheel control lever, in which a bean-shaped recess is made in the support body, which has a vertical downward slope in the rear part. The axis of rotation of the folding support with the wheel in the open position is located slightly backward relative to the axis of the lifting mechanism of the support with the wheel.

The transformation from a sofa position to a bed position is made under the influence of a spring, and not forcibly. Also, this mechanism may not work if an obstacle hits the support roller of the folding support during the transformation to the lying position.

The solution disclosed in D2 was chosen as the closest analogue to the claimed utility model.

Disclosure of a utility model

The problem to be solved by the claimed solution is to eliminate the disadvantages identified in the prior art.

The technical result of the claimed utility model is to increase the reliability of the sofa folding mechanism.

The specified technical result of the claimed utility model is achieved due to the fact that the support mechanism for transforming sofas, including the roll-out support, the support rod connected to the roll-out support by means of a pivot connection, and a rod stopper connected to the support rod by means of a pivot connection, while the roll-out support is provided with a roller and a protrusion for stopping against the sliding part of the sofa seat frame, the support rod contains a crescent-shaped slot made with the possibility of engaging with the control rod located on the sofa frame, and contains a shaped groove, the rod stopper is made in the form of an earring with a crescent-shaped slot made with the possibility of engaging with the control rod located on the sofa frame and contains an L-shaped figured groove, and in the figured grooves of the thrust support and the thrust stopper, the axis of the guide wheel is located, made with the ability to move along the guide of the sofa frame, while the roll-out support is connected to retractable diva on a swivel joint.

Brief Description of Drawings

Figure 1 shows a support mechanism for transforming sofas and its components.

Figures 2-4 show a sequential diagram of the action of the support mechanism for transforming the sofa from a sitting position to a lying position.

utility model implementation

The support mechanism for transforming sofas includes a roll-out support (1), a support rod (2) connected to the roll-out support (1) by means of a pivot connection (13), and a rod stopper (6) connected to a support rod (2) by means of a pivot connection ( 13). The roll-out support (1) is equipped with a roller (3) and a protrusion (4) for abutting against the sliding part (5) of the sofa seat frame. The thrust of the support (2) contains a sickle-shaped slot (8), made with the possibility of engaging with the control rod (9) located on the frame (10) of the sofa, and contains a shaped groove (7). The thrust stopper (6) is made in the form of an earring with a crescent-shaped slot (16), made with the possibility of engaging with the control rod (9) located on the frame (10) of the sofa. Also, the thrust stopper (6) contains a shaped groove (15). In the shaped grooves (7), (15) of the thrust of the support (2) and the stopper of the thrust (6) there is an axis of the guide wheel (11), made with the possibility of moving along the guide (12) of the frame (10) of the sofa. The roll-out support (1) is connected to the pull-out part (5) of the sofa by a hinge joint (14).

The support mechanism (1) is pivotally connected to the transformation mechanism. On the upper side, the support mechanism (1) is pivotally connected to the support rod (2). From the opposite edge of the support rod (2), from the connection with the roll-out support (1) with the roller (3), the rod stopper (6) is pivotally connected. A stepped rivet (13) is used as a hinge joint (13) between the roll-out support (1) with the roller (3), the support rod (2) and between the support rod (2) and the rod stopper (6). The support rod (2) is an elongated plate, on both sides of which there are holes for the articulated connection (13), between which there is a shaped groove (7) having an elongated shape. The shaped groove (7) is designed to accommodate the axis of the guide wheel (11). Above the shaped groove (7) there is a slot (8), which is a crescent-shaped for the control rod (9). The thrust stopper (6) is made in the form of an earring, and is equipped with a sickle-shaped slot (16) for the control rod (9), and contains a figured groove (15), which is an L-shape and is designed to accommodate the axis of the guide wheel (11) ... The shapes of the grooves (7), (15) and sickle-shaped slots (8), (16) in the support rod (2) and the rod stopper (pos. 6) differ, due to which it is possible to lock the support rod (2) when the roll-out support is unfolded ( 1) with rollers (3). The axis of the guide wheel (11) is fixed on the extendable part of the sofa (5) and is located in the shaped grooves (7), (15) of the support rod (2) and the rod stopper (6). The control rod (9) is fixed to the frame (10).

A feature of this utility model is the forced unfolding and folding of the support mechanisms of the sliding part of the sofa (5) during the transformation process, due to the kinematic interaction of the control rod (9), support rod (2), rod stopper (6) and roll-out support (1).

When the transformation mechanism (5) is pulled out of the frame (10), into the “bed” position, the control rod (9) holds the support rod (2) and the rod stopper (6) by the sickle-shaped slots. The support rod (2) and the rod stopper (6) remain in place, and the roll-out support (1) with the roller (3) moves together with the transformation mechanism (5), while the roll-out support (1) with the roller (3) begins to unfold. The axis of the guide wheel (11) moves together with the transformation mechanism (5) and slides in the grooves (7) (15) of the support rod (2) and the rod stopper (6). As the transformation mechanism continues to extend, the control rod (9) disengages from the crescent-shaped slot (8) of the support rod (2), remaining in engagement with the sickle-shaped slot (16) of the rod stopper (6). The roll-out support (1) with the roller (3) is unfolded, but not fixed, the idler wheel axis (11) is in the extreme position of the groove (7) of the support rod (2). As the transformation mechanism continues to extend, the control rod (9) disengages from the sickle-shaped groove (16) of the thrust stopper (6). At this moment, the thrust stopper (6) is lowered, under the influence of the control rod (9) and gravity, turning on the articulated joint, and engages with the L-shaped groove (15) with the axis of the guide wheel (11). The support mechanism is folded out and fixed. The guide wheel (11) rolls along the guide (12) until the roller (3) touches the floor surface and holds the weight of the transformation mechanism.

When a piece of furniture is transformed from a lying position to a sitting position, the folding process of the support mechanism occurs in the reverse order.

This technical solution allows the transformation of the folding support of the roll-out without the use of springs, provides reliable control and fixation of the roll-out support (1) during transformation and operation.

Claims (1)

A support mechanism for transforming sofas, including a roll-out support, a support rod connected to the roll-out support by means of a pivot joint, and a rod stopper connected to a support rod by means of a pivot connection, while the roll-out support is equipped with a roller and a protrusion to rest against the extendable part of the sofa seat frame, the thrust of the support contains a crescent-shaped slot made with the possibility of engagement with the control rod located on the frame of the sofa, and contains a figured groove, the stopper of the traction is made in the form of an earring with a crescent-shaped slot made with the possibility of engaging with the control rod located on the frame of the sofa , and contains an L-shaped shaped groove, and in the shaped grooves of the support rod and the rod stopper there is an axis of the guide wheel made with the possibility of moving along the guide of the sofa frame, while the roll-out support is connected to the sliding part of the sofa by a hinge joint.

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