RU2238019C1 - Support for working in armchair or bed - Google Patents

Abstract

FIELD: manufacture of support used for working, taking food and performing medicinal procedures.

SUBSTANCE: support has panel used as alternative to working seat for people incapable of seating at writing table and tied to armchair or bed. Panel is supported by leverage mechanism. Support is further equipped with set of devices for attachment of leverage mechanism to rests. Panel has strip and electric illumination device. Levers are made of two pipes, which are telescopically inserted into one another and provided with members for fixing their length and for securing from rotation of pipes around their longitudinal axes. Said devices are made in the form of screws and tips made from material softer than that of internal pipe and attached to screws. Pivot joint pins are made in the form of screws equipped with plate-like springs located inside pivot joints. Devices for attachment of leverage mechanism to rests are provided with clamping parts. Panel may be readily repositioned for setting it in desired position.

EFFECT: wider operational capabilities owing to increased space allowing patient to use support, increased convenience and simplified construction.

8 cl, 10 dwg

Description

The invention relates to furniture. The stand with a work panel that can be easily moved in space can be used in a home environment and in medical institutions. It is an alternative to the workplace for people whose physical condition does not allow them to sit at a desk and are in an armchair or bed.

The patent literature contains information about technical solutions similar to the proposed device. So, for example, from British patent No. 2352426, cl. A 47 B 23/04, publ. 01/31/2001, the known stand for work in bed, containing a flat working panel resting on the bed through four racks of variable length. A computer keyboard and other small items can be placed on the operation panel. The device has means for fixing the length of the racks, which serve to maintain the panel in the necessary position for work. This design is associated with certain inconveniences, because whenever a user needs to get out of bed, a great deal of effort is required before lifting and moving the device to another place.

An invention known from the description of European patent No. 0283459, class. A 47 B 23/04, publ. 09.21.88, in which a device is proposed comprising a working panel pivotally attached to a rod having a L-shaped shape. The rod is mounted on a base plate and is capable of rotation and vertical movement. The device is equipped with means for fixing the working panel in the desired position. The disadvantage of this technical solution is the small area covered by the panel, i.e. small space in which the user can move the panel during operation.

The patent of Germany is known No. 3143914, class. A 47 B 23/02, publ. 05/11/83, which describes the stand for work in the chair. The working panel in this device is pivotally attached to a L-shaped tripod, which is equipped with a set of tools used for various supports (supports on bed elements or on the floor of the room are possible). The disadvantage of the solution, as in the case described above, is the relatively small service area, which is limited by the length of the horizontal tripod element having an L-shaped shape.

It should be noted the known device according to US patent No. 4702453, class. A 47 B 97/04, publ. 10.27.87, which describes the stand for work in an armchair or in a bed, including a working panel pivotally attached to a lever-articulated mechanism, comprising a system of four pivotally connected levers and means of attachment to the support. The device includes four spherical joints, which complicates its manufacture. In addition, the design [4] allows you to mount the device only to supports having the form of flat plates, which limits its operational capabilities.

The closest analogue of the proposed technical solution is the stand for work in an armchair or bed, known from the description of US patent No. 4455008, class. A 47 B 19/00, publ. 06/19/84 (prototype), including a working panel pivotally attached to a lever-articulated mechanism, consisting of two pivotally connected levers, and a set of means for pivotally mounting this mechanism to various supports, all the hinges are made cylindrical and fastened by axes, while each of the means for fastening the lever-articulated mechanism to various supports has a bearing connecting sleeve.

The disadvantages of the invention include the relatively small space served by the working panel, and the inconvenience of its use, associated with the complexity of operations to change the position of the panel, and the inability to support the device on the elements of the room.

The present invention is aimed at filling the above disadvantages. The technical result achieved by the implementation of the invention is the expansion of operational capabilities by increasing the space served by the device, while improving the usability.

The specified technical result is achieved in the well-known stand for work in an armchair or bed, including a work panel pivotally attached to a lever-articulated mechanism, consisting of two pivotally connected levers, and a set of means for pivotally mounting this mechanism to various supports, all hinges are made cylindrical and fastened by axes, with each of the means for attaching the lever-hinge mechanism to various supports has a bearing connecting sleeve, a distinctive feature is that the work the tea panel is additionally equipped with a shelf, the axis of the hinge joints are made in the form of screws and equipped with Belleville springs placed inside the hinges, the levers are made telescopic from two tubes inserted one into the other and are equipped with means for fixing the length of the levers and the angle of relative rotation of their pipes around their longitudinal axis made in the form of screws with tips made of a softer material than the material of the inner pipe of the telescopic arm, and the tips are attached to the screws by a screw outlets, screw heads fastening the articulated joints of the levers are provided with radially directed rods with spherical thickenings at the ends, and a rod is pivotally attached to the lever facing the support, the opposite end of which is secured by a locking screw in the carrier connecting sleeve of the lever-articulation mechanism to the support.

The invention is illustrated by the following drawings.

Figure 1. Stand for work in an armchair or bed, general view.

Figure 2. The same, view along arrow E in figure 1 (the lever-articulated mechanism is conventionally not shown).

Figure 3. The fixing unit of the pipes constituting the telescopic arm, section AA in FIG. 1 (scaled up).

Figure 4. The node connecting the hinge elements by means of an axis made in the form of a screw equipped with Belleville springs located inside the hinge, section BB in FIG. 1 (scaled up).

Figure 5. The same, view along arrow D in FIG. 4 (scaled up).

6. Stand for work in an armchair or bed, the option of attaching the lever-articulated mechanism to the support in the form of a flat plate (scaled up).

7. Stand for work in an armchair or bed, the option of attaching the lever-hinge mechanism to the floor of the room by means of a vertical cylindrical rack with a base in the form of a plate.

Fig. 8. Also, the vertical cylindrical rack is made telescopic and is additionally equipped with a stove in the upper part to stop it against the ceiling.

Fig.9. The same, sections CC in Figures 4 and 5 (scaled up).

Figure 10. Stand for work in an armchair or bed, an option for mounting a lever-hinged mechanism to the wall of the room (scaled up).

As shown in figure 1, the stand for work in an armchair or bed contains a working panel 1, which is attached by a hinge 2 to a lever-hinge mechanism, consisting of two levers 3 and 4 connected by a hinge 5. For attaching the lever-hinge mechanism to various the supports have a set of means attached to the lever 4 by means of a hinge 6 and a rod 7 attached to it. Each of the means used to fasten the lever-hinge mechanism to various supports has a bearing connecting sleeve 8 with a locking screw 9. Rabo tea panel 1 is equipped with a shelf 10 attached to it, designed to accommodate a book, phone, etc. small items (see figure 2).

The levers 3 and 4 are made telescopic, each of them consists of two pipes inserted one into the other. The levers are equipped with means for fixing their length and simultaneously fixing the angle of relative rotation of the constituent arms of the pipes. These tools are made in the form of screws 11, screwed into the outer pipe to the stop in the inner pipe (see figure 3). The screws 11 are provided with tips 12 of a softer material than the material of the inner pipes, which (tips) are attached to the screws 11 by screw connections and can be made, in particular, of rubber.

All hinges are cylindrical. The connected elements of the hinges are fastened by means of axles made in the form of screws 13, equipped with Belleville springs 14, which are placed inside the hinges (see Fig. 4). In this case, a part of the screw 13 connecting the hinge elements having a thread is screwed into the hinge part of one of the levers with the possibility of fixing the rotation angle of the connected levers relative to each other. The heads 27 of the screws 13 are equipped with radially directed and located in planes perpendicular to the axes of the screws 13, rods in an amount of at least four pieces. At the free end of each of these rods there is a spherical thickening.

The means of fastening the lever-hinge mechanism to the support can in particular be made in the form of a screw clamp (or clamp) 15 with a supporting connecting sleeve 8 attached to it, equipped with a locking screw 9. The sleeve 8 can be fixed to the clamp 15 by welding. The clamp 15 has a flat working surface with V-shaped grooves (see Fig.6).

The means of fastening the lever-hinge mechanism to the support may be provided with a vertical cylindrical rack 16 with a base in the form of a plate 17 provided with means for attaching to the floor of the room (see Fig. 7).

The cylindrical rack can be made telescopic and is additionally equipped in the upper part with a plate 18, which serves to support the rack in the ceiling of the room (see Fig. 8). In this case, the telescopic stand has a means of fixing the length, for example, in the form of a screw 26. The nature of the fixation of the clamp 15 on the cylindrical stand 16 is shown additionally in Fig.9.

The means of fastening the lever-hinge mechanism to the support can, in the particular case, be made in the form of a plate 19 to which a bearing connecting sleeve 8 is attached (the sleeve 8 can be welded to the plate 19). The plate 19 is equipped with parts for fixing it to the wall, for example, screws 20 (see figure 10).

In the particular case of execution, the stand for work in an armchair or in bed can be equipped with an electric lamp 21 (see figure 1).

The proposed stand can be, in a particular case, equipped with electric, telephone, etc. communication wires 23 laid in the rails 22, which are attached to the telescopic levers 3 and 4.

The wires 23 have the ability to slip in the guides 22 in the process of changing the length of the levers. To compensate for the length of the wires in this case, a drum 24 with a return spring is provided. The wires 23 end with connectors 25 located on the working panel 1.

On the working panel 1 can be placed a laptop computer, fax or telephone, etc. facilities. During meals on the panel 1, you can put plates and other necessary items. In addition, panel 1 can be used to accommodate instruments and devices used in medical procedures.

As follows from the previous description, this invention provides various uses for the stand, depending on the structural design of the means of fastening the lever-articulated mechanism to the support, which (means), in turn, are selected in relation to environmental conditions. The following use cases of the invention can be characterized:

a) the stand can be attached to the bed, chair or to the table with a clamping device 15, including two screw-tightened plates, with flat working surfaces on which there are V-shaped grooves (see Fig. 6);

b) the stand can be attached to the floor of the room if, in addition to the elements and connections described in paragraph a), the means for attaching the lever-articulated mechanism to the support is provided with a vertical cylindrical rack 16 with a base in the form of a plate 17 (see Fig. 7);

c) a more reliable fastening of the stand is provided in the case when, in addition to the elements and connections described in a) and b), in the means of fastening the lever-hinge mechanism to the support, the vertical cylindrical rack is made telescopic and provided with a plate 18 in the upper part for emphasis on the ceiling (see Fig. 8);

d) the stand can be fixed to the wall of the room using the means of fastening the lever-hinge mechanism to the support, made in the form of a plate 19 with a supporting connecting sleeve 8 attached to the plate, while the plate is screwed to the wall (see Fig. 10).

Option a) is intended for the case where the support is a flat plate. In this embodiment, only four flat sections of the working surfaces of the plates included in the clamp 15 work (in Fig. 6 these sections are indicated by the letter K). The planes of the working surfaces forming a V-shaped groove in this case do not come in contact with the support.

In option b) a screw clamp 15 covers a part having a cylindrical shape. In this case, the planes forming the V-shaped groove are in contact (in Fig. 9, these planes are denoted by the letter M).

Thus, the clamp, the plates of which have flat working surfaces with grooves of a V-shape, is universal and can be used for fastening to elements having both a flat and cylindrical shape of the contact surface.

Option b) is intended for the case when the support is the floor of the room. The vertical cylindrical rack, which is additionally equipped with a means of fastening the lever-hinge mechanism to the support, perceiving the weight of the entire structure, transfers it to the floor of the room by means of a base made in the form of a plate attached by screws to the floor of the room.

Option c) is intended for the case when the device and support are both the floor and ceiling of the room where the user’s bed or chair is located. In this case, the implementation of a vertical telescopic stand and its additional supply in the upper part with a stove allows for more reliable fastening of the device.

Options b) and c) are preferably used in hospitals and hospitals where it is possible to attach two or more supports to one vertical cylindrical rack.

Option d) is intended for the case when the support is the wall of the room. In this case, the execution of the fastening means of the lever-hinge mechanism in the form of a plate 19 with a supporting connecting sleeve 8 attached to the plate, as well as the fastening elements of the plate 19 to the wall, made, for example, in the form of screws 20, makes it possible to use the wall surface as a support. Moreover, the device does not rest on the floor of the room, which facilitates cleaning, repair and other work. In addition, the dismantling of the device is facilitated. for this, one can limit oneself only to the operations of loosening the locking screw 9 and removing the rod 7 from the opening of the bearing connecting sleeve 8.

The execution of screws 11 with tips 9 of a material softer than the material of the inner pipe is aimed at mitigating the action of forces arising from the tightening of these screws, fixing the connection of the pipes. This allows you to more accurately control the tightening force and, therefore, the ultimate force that must be applied to move the pipes relative to each other. Similarly, the execution of the axis of each of the hinges 2, 5 and 6 in the form of a screw 13, provided at the end with a thread, for screw connection with the hinge part of one of the levers and supplying this assembly with disk springs is aimed at mitigating the action of axial forces when tightening the screw connection. Together with the mentioned design features, supplying the heads of the 27 screws with 13 radial rods with spherical thickenings at the ends allows more finely adjusting the pressure exerted by the heads of these screws on the fastened elements of the levers, which is especially important for people with physical disabilities. As a result of such design features, the tightening of screw pairs is characterized by smoothness. This makes it possible, by pre-adjusting the tightening efforts of the screws 13, to reach such values of the limiting moments of operation of the fixing means, which allow you to change the angle of rotation of the levers relative to each other without rotating the fixing screws 13. The user or maintenance personnel can, as a result of the above structural features, without rotating the screws 11 and 13, easily and quickly give the working panel the position necessary for work, eating or for procedures. The installation of Belleville springs 14 inside the hinges makes the hinges more compact, which protects the user and maintenance personnel from possible injuries.

The presence in the device structure of the lamp 21 facilitates the use of the stand in the dark.

The supply of the device with wires with a drum, compensating for excess wires, allows you to freely carry out operations to change the length of the telescopic arms. During use, various devices and apparatuses can be connected to terminal 25.

These positive properties of the present invention confirm the expansion of operational capabilities while improving convenience and comfort in the process of its use and thus achieving the expected technical result.

Claims (8)

1. A support for working in an armchair or bed, including a working panel pivotally attached to a lever-pivot mechanism, consisting of two pivotally connected levers, and a set of means for pivotally attaching this mechanism to various supports, all hinges are made cylindrical and fastened by axes, with this, each of the means for attaching the lever-articulated mechanism to various supports has a bearing connecting sleeve, characterized in that the working panel is additionally equipped with a shelf, the axis of the hinged joints are made in the form of screws and equipped with Belleville springs placed inside the hinges, the levers are made telescopic from two tubes inserted one into the other and are equipped with means for fixing the length of the lever and the angle of relative rotation of their pipes around their longitudinal axis, made in the form of screws with tips of softer material than the material of the inner pipe of the telescopic arm, the tips being attached to the screws by means of screw connections, screw heads securing the articulated joints of the levers enes radially directed rods with spherical thickenings at the ends, to the lever and facing the support, is hinged the rod, the opposite end of which is fixed a locking screw in the connecting hub means carrying lever-attaching the hinge mechanism to the support. 2. The support according to claim 1, characterized in that the means of fastening the lever-hinge mechanism to the support is made in the form of a screw clamp having flat working surfaces with V-shaped grooves to which a bearing connecting sleeve is attached. 3. The support according to claim 2, characterized in that the means of fastening the lever-hinge mechanism to the support is additionally equipped with a vertical cylindrical rack with a base in the form of a plate and means for fixing the plate to the floor of the room. 4. The support according to claim 3, characterized in that the cylindrical pillar included in the means of fastening the lever-hinge mechanism to the support is telescopic and is additionally equipped with a plate in the upper part for stopping it against the ceiling of the room. 5. The support according to claim 1, characterized in that the means of fastening the lever-hinge mechanism to the support has a plate to which a bearing connecting sleeve is attached, and the plate is provided with parts for attaching it to the wall of the room. 6. The stand according to one of claims 1 to 5, characterized in that it is equipped with electric, telephone, etc. communication wires laid in guides attached to telescopic levers, and a drum equipped with a spring designed to compensate for the length of the wires when changing the length of the levers, and the wires end with connectors attached to the working panel. 7. The stand according to one of claims 1 to 6, characterized in that the working panel is equipped with an electric lamp. 8. A support according to one of claims 1 to 7, characterized in that the lugs attached to the screws fixing the relative position of the pipes of the telescopic arms are made of rubber.

Images