KR100979940B1 - Chair with function of height control of back and chair assembly using the same - Google Patents

Abstract

PURPOSE: A chair having a seat back height control function and a chair assembly using the same are provided, which make the height of the seat back controlled according to user's state sitting on a chair. CONSTITUTION: A chair having a seat back height control function comprises: a body(10) of the box type including a receiving space; a leg(12) combined with the lower part of the body; a guide projection(13); a supporting plate(14) combined with the upper side of the body; a load sensor(22) sensing the load applied to the supporting plate; a seat back(16) of the plate shape which is combined with the backside surface of the body to be slid; a rack(17) which is arranged in the front side of the seat back in order to be expanded upward and downward; a motor(26) accepted within the body; a pinion(27) which is geared with the rack; and a proximity sensor(24) arranged in the front side of the seat back.

Description

Chair with function of height control of back and chair assembly using the same}

The present invention relates to a chair, and more particularly, to a chair capable of adjusting the height of the sliding back and a chair combination using the same.

A chair is a piece of furniture for a person to sit on, and includes a pedestal, a backrest, a leg, an armrest, and the like. In the living zone using chairs, various chairs having various functions and forms have been devised according to the lifestyle and the needs of each age.

Since the conventional chair has a fixed form and structure, there is a disadvantage in that there are limitations in connecting a plurality of chairs and using them for other purposes such as a bed or a sofa. In addition, since the chair itself is arranged as an independent piece of furniture, there is a limit to using it as furniture having different functions such as a storage box or an interior accessory.

In addition, the conventional chair is made of materials such as solid wood, particle board, plywood, synthetic leather, leather, cloth, there is a problem that the abuse of these materials can cause environmental damage or environmental pollution.

The above-described background technology is technical information that the inventor holds for the derivation of the present invention or acquired in the process of deriving the present invention, and can not necessarily be a known technology disclosed to the general public prior to the filing of the present invention.

The present invention provides a chair in which the height of the backrest is automatically adjusted according to the state (height, etc.) of the user seated on the chair.

In addition, the chair can be used as a storage box, by connecting a plurality of chairs can be used as a bed or sofa, and to provide a chair using environmentally friendly materials.

According to an aspect of the invention, the box-shaped body including a storage space that is opened to the rear, the legs coupled to the lower portion of the body to support the body in contact with the ground, so as to extend in the vertical direction on the back of the body A guide sensor that is formed, coupled to the upper surface of the body, the support plate for supporting the hip portion of the seated user, and a load sensor received in the body, connected to the support plate to detect the load applied to the support plate by the weight of the seated user And, having a guide groove that is matched with the guide projection is coupled to be slidable in the vertical direction on the back of the body, the storage space is exposed as it slides upward, and forms the back plate of the body as it slides downward Plate-like backrest to be shielded, arranged to extend in the vertical direction on the front of the backrest Is a rack, a motor accommodated in the body and generating a driving force such that the backrest slides up and down, a pinion coupled to the drive shaft of the motor, and engaged with the rack, and the seated user's seat. The proximity sensor disposed on the front of the backrest to detect proximity, initiates upward sliding of the backrest in response to a signal from the load sensor, and adjusts the upward sliding height of the backrest in response to a signal from the proximity sensor. A chair having a backrest height adjustment function is provided that includes a controller for controlling driving.

A stopper may be installed at the coupling portion of the body and the backrest such that the backrest slides intermittently with respect to the body.

The controller may start the upward sliding of the backrest when the user is seated on the support plate, and control the driving of the motor so that the backrest slides to a height corresponding to the height of the shoulder of the user.

The legs may be provided with hooks that are coupled to the legs of adjacent chairs to allow a plurality of chairs to be continuously connected.

It may further include a connection detecting means accommodated in the body, for detecting the presence of the object in the back of the back, the controller, prior to the signal from the load sensor and the proximity sensor to the backrest, the signal from the connection sensing means When the object is adjacent to the back of the backrest can be controlled to drive the motor to maintain the back plate of the body without sliding.

In this case, according to another aspect of the present invention, there is provided a chair assembly formed by connecting a plurality of chairs so that their bodies contact each other.

Other aspects, features, and advantages other than those described above will become apparent from the following drawings, claims, and detailed description of the invention.

According to a preferred embodiment of the present invention, the backrest of the chair is slidable and the sliding operation of the backrest is controlled by a load sensor or a proximity sensor, so that the backrest can be adjusted according to physical conditions such as weight or height of the user seated on the chair. It can be adjusted automatically.

In addition, the empty space of the body can be used as a storage box, and the chair can be used as a bed or a sofa by connecting several chairs while the backrest is lowered. can do.

1 is a conceptual diagram showing a chair according to an embodiment of the present invention.
Figure 2 is a block diagram showing the operating state of the controller according to an embodiment of the present invention.
3 to 5 is a state diagram used in the chair according to the embodiment of the present invention.

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated and described in the drawings. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and in the following description with reference to the accompanying drawings, the same or corresponding components are given the same reference numerals and redundant description thereof will be omitted. Shall be.

1 is a conceptual diagram showing a chair according to an embodiment of the present invention, Figure 2 is a block diagram showing an operating state of the controller according to an embodiment of the present invention. 1 and 2, the storage space 3, the body 10, the leg 12, the guide protrusion 13, the support plate 14, the backrest 16, the rack 17, and the guide groove 19 ), A load sensor 22, a proximity sensor 24, a motor 26, a pinion 27, and a controller 30 are shown.

In this embodiment, the chair's back 16 is slidably coupled to the body 10 and the seat back 16 of the chair is adjusted to fit the physical condition of the seated person, for example, the height of the chair. And it is characterized by improving the human orientation (Humane Orientation). In addition, when using the chair, the backrest is sometimes needed, but sometimes it is not necessary, so that the backrest can be slid up and down like a mobile phone.

Chair according to this embodiment is made of a basic structure of the body 10, the leg 12, the backrest 16. The body 10 may be formed in the form of a cube or a cube box as shown in FIG. 1 as a structure forming the basic skeleton of the chair. As such, when the body 10 is implemented in the form of a box, an empty space in the body 10 may also be used as a storage space, and accordingly, the chair according to the present embodiment may serve as a storage furniture, thereby providing one interior accessory. Can also function as

On the other hand, the back of the body 10 according to the present embodiment may be coupled to the backrest 16 as will be described later, so the backrest 16 slides in the upward direction as the back of the body 10 is exposed to the body The storage space 3 in the 10 may also be opened toward the rear side of the body 10.

In this case, the backrest 16 may serve as a cover for the back of the body 10, that is, as a back plate for the body 10. When the backrest 16 slides downward, the back of the body 10 may be covered, and when the backrest 16 slides upward, the back of the body 10 may be exposed. As the back of the body 10 is covered by the backrest 16, the storage space 3 in the body 10 may also be opened or shielded to the outside according to the sliding of the backrest 16.

Leg 12 is a component that is coupled to the lower portion of the body 10 to support the body 10, when the chair according to the present embodiment is placed on the floor is in contact with the ground. Leg 12 according to the present embodiment may be implemented in the form of four pillars, such as a conventional chair leg, and may be implemented in a variety of structures, shapes and materials, such as the form of the anti-skid packing member coupled to the lower surface of the body 10 Can be. On the other hand, the leg 12 according to the present embodiment, as will be described later, when using a plurality of chairs connected to each other, such as a sofa or a bed, the function as a target structure that is provided with a coupling structure for connecting the chairs between can do.

The back of the body 10 is coupled to the back plate (板狀) of the plate-like (板狀), the backrest 16 according to this embodiment is characterized in that it is coupled to the body 10 to be slidable in the vertical direction. For example, as shown in FIG. 1, the entire back portion (or part) corresponding to the back plate of the body 10 coupled to the back plate 16 is used to make the part corresponding to the back plate of the body 10 entirely (or partially). R) may be configured to slide in the vertical direction.

Alternatively, when the backrest 16 is dug into the back of the body 10, the backrest 16 can be stored and drawn out. When the backrest 16 moves downward, the backrest 16 is stored in the body 10, and the backrest 16 is upward. In the case of moving to the backrest 16 may be withdrawn through the groove cut in the body (10). In this case, when the backrest 16 is stored in the body 10, the upper surface of the backrest 16 and the upper surface of the body 10 are positioned on the same plane, and the backrest 16 is in the stored state. By making only the box-shaped body 10 visible, the design aesthetics of the chair can be further improved.

For sliding operation of the backrest 16, various sliding mechanisms may be applied to the body 10 and / or the backrest 16 according to the present embodiment. For example, the back of the body 10 is formed with a guide protrusion 13 extending in the vertical direction, the backrest 16 is formed with a guide groove 19 to be matched to the guide protrusion 13, the backrest 16 May be moved in the vertical direction in the state coupled to the body (10).

The backrest 16 according to the present embodiment serves as a cover with respect to the backside of the body 10 (and the storage space 3), and when the backrest 16 slides downward, the backside of the body 10 (and the storage space). As described above, when (3)) is shielded and the backrest 16 slides upward, the rear surface (and the storage space 3) of the body 10 can be exposed.

In this case, both ends of the guide protrusion 13 (or the guide groove 19) may be provided with stepped portions to set a limit point at which the backrest 16 slides in the vertical direction. That is, when the backrest 16 slides downward, the guide groove 19 (or the guide protrusion 13) is caught on either step, and the backrest 16 is restrained from moving further downward, and the backrest ( When the 16 slides upward, the guide groove 19 (or the guide protrusion 13) is caught on the other step so that the backrest 16 can no longer be moved upward.

On the other hand, when the guide grooves 19 are formed at both ends of the backrest 16, grooves (not shown) are formed in the guide grooves 19 at regular intervals, and the guide protrusions 13 are burnt by springs or the like. By providing a sexually supported stopper (not shown), the backrest 16 may not be slid continuously with respect to the body 10, but may be intermittently slid according to the gap in which the groove is formed.

In this way, by applying the stopper mechanism to the engaging portion of the body 10 and the backrest 16, the user can more intuitively move the backrest 16 upwards (or downwards) by a certain height. For example, when the grooves are formed at intervals of 5 cm, in order to move the backrest 16 upward by 30 cm, the backrest 16 may be moved upward by six steps constrained by the stopper.

In addition, if the stopper is further provided in the sliding mechanism as described above, the backrest 16 can be prevented from falling downward due to its own weight. In addition, even when sliding the backrest 16 by the driving of the motor 26 as described later, the backrest 16, which is slid by a predetermined height, is restrained by the stopper so that the motor for bearing the weight of the backrest 16 ( Even if the driving force of 26 is reduced or the motor 26 is stopped, the backrest 16 can be prevented from falling downward due to its own weight.

On the other hand, the backrest 16 according to the present embodiment may be manually moved by a person, but may be configured to automatically slide by receiving the driving force from the motor 26. That is, the motor 26 is installed in the body 10, and the motor 26 is operated by receiving a signal from the controller 30 to be described later. When the motor 26 is rotated in one direction, the backrest 16 moves upward. Sliding in the direction of the motor 26, the backrest 16 may slide downward.

To this end, a pinion 27 gear is coupled to the drive shaft of the motor 26 according to the present embodiment, and a rack 17 engaged with the pinion 27 is mounted on the front surface of the backrest 16 up and down. By arrange | positioning in the direction, the backrest 16 can be moved to an up-down direction according to rotation of the motor 26. As shown in FIG. On the other hand, as shown in Figure 1, by placing the rack 17 to one side (or both sides) of the backrest 16, attaching an elastic material such as a cushion that can support the seat of the seated on the central portion of the backrest 16 can do.

The chair according to the present embodiment is characterized in that the height of the backrest 16 is adjusted in response to the physical condition of the seated person. For this purpose, the load sensor 22 and the seated person of the seat 10 detect the load of the seated person in the body 10. Proximity sensor 24 for detecting the height may be installed.

The load sensor 22 is a sensor for generating a sensing signal corresponding to a load applied thereto, and various types of sensors such as a load cell, a piezoelectric element, and a pressure sensor may be used. Furthermore, in order to more accurately detect the weight of a person seated in a chair, a sensor having excellent sensing sensitivity in the weight range of the person (for example, several tens of kg) can be used.

The upper surface of the chair body 10 may be coupled to the support plate 14, that is, the support plate for supporting the buttocks of the seated person, the load sensor 22 according to the present embodiment to effectively detect the weight of the seated person It may be installed to be connected to the support plate (14). Thus, when a person sits in a chair according to the present embodiment, the support plate 14 is pressed by the weight of the seated person, and the load sensor 22 connected to the support plate 14 generates a sensing signal corresponding to the weight of the seated person. Done.

The proximity sensor 24 is a sensor that generates a sensing signal according to the presence of an object in front of the object, and a sensor that detects the approach of the object in various ways such as optical (illuminance), infrared, and ultrasonic may be used. Further, a sensor having excellent sensing sensitivity at a normal distance (for example, in the range of 1 cm to 30 cm) between the backrest 16 and the seated person can be used to more accurately detect the presence of a person seated on the chair.

When a person is seated on a chair, the body (for example, the back) of the seated person generally faces the front of the backrest 16. The proximity sensor 24 according to the present embodiment can effectively detect the presence of the seated person. It may be disposed in front of the backrest 16. As a result, when a person sits in a chair according to the present embodiment, the proximity sensor 24 installed in front of the backrest 16 generates a sensing signal corresponding to the presence of the seated person.

In order to detect whether the user is seated using the proximity sensor 24, the sensing distance of the proximity sensor 24 may be set long enough (for example, about 30 cm), and the part of the user's body that contacts the backrest 16. For example, the sensing distance of the proximity sensor 24 may be set short enough (for example, about 1 cm) to detect the back or the shoulder portion. That is, by variously setting the sensing distance of the proximity sensor 24 according to the present embodiment, it is possible to sense not only the user's seating but also a part of the user's body supported by the backrest 16.

In the body 10, a controller, that is, a controller 30, that adjusts the height of the backrest 16 according to the physical condition of the seated person may be installed. The controller 30 is a component that adjusts the height of the backrest 16 by receiving signals from the load sensor 22 and the proximity sensor 24, and may be implemented in the form of a microprocessor or the like.

The chair according to the present embodiment has a function in which the backrest 16 is normally lowered and the backrest 16 is raised when a person sits in the chair, and the height of the backrest 16 is adjusted according to the height of the seated person. can do.

To this end, the controller 30 according to the present embodiment, as shown in FIG. 2, first, may control the driving of the motor 26 by receiving a signal from the load sensor 22. For example, when the user is seated on the support plate 14, a signal corresponding to a preset reference value (for example, 10 kgf or more) may be generated and transmitted from the load sensor 22. The motor 26 can be driven to initiate upward sliding of the backrest 16. In addition, when the user is not seated on the support plate 14, a signal corresponding to a preset reference value (for example, less than 10 kgf) may be generated and transmitted from the load sensor 22, so that the controller 30 supports the backrest. The motor 26 can be driven so that the 16 can slide downward.

As such, the controller 30 according to the present exemplary embodiment controls the driving of the motor 26 according to the signal from the load sensor 22, so that the backrest 16 automatically moves up or down depending on whether the seated person is seated. can do.

Second, it is possible to control the height of the backrest 16 to slide in the upward direction corresponding to the height of the seated person sensed by the proximity sensor 24. For example, when the user is seated on the support plate 14, a sensing signal corresponding to the shoulder height of the user may be generated and transmitted from the proximity sensor 24, so that the controller 30 may seat the backrest 16. The driving of the motor 26 may be controlled to rise to the shoulder height of the chair.

That is, when a person with a large height (sitting height) sits on the chair, the motor 26 is further driven so that the backrest 16 rises relatively high, and when a person with a small height (sitting height) sits on the chair, the motor 26 By less driving the backrest 16 to rise relatively low, it is possible to adjust the height in which the backrest 16 slides upward in proportion to the height of the seated person.

As such, the controller 30 according to the present exemplary embodiment controls the driving degree of the motor 26 according to the body condition (height, sitting height) of the seated person detected by the proximity sensor 24, thereby supporting the back according to the height of the seated person ( 16) can be automatically raised to a height that can support the seated person's back.

In order to effectively sense the user's body, as described above, the sensing distance of the proximity sensor 24 can be adjusted, for example, when sliding the backrest 16 according to the height of the shoulder of the seated person, the normal seating time. By setting the sensing distance of the proximity sensor 24 to the distance (for example, 5 cm) that the shoulder of the person touches the backrest 16, the backrest 16 can be slid to the shoulder height. In the case of sliding the backrest 16 in conformity, the backrest 16 is set by setting the sensing distance of the proximity sensor 24 to a distance (for example, 20 cm) between the head (back head) and the backrest 16 of the person during normal seating. Can slide up to head height.

3 to 5 is a state diagram used in the chair according to the embodiment of the present invention. 3 to 5, a chair 1, a body 10, a backing plate 14, and a backrest 16 are shown.

In the chair 1 according to the above-described embodiment, when the backrest is not needed as shown in (a) of FIG. 3, the backrest 16 slides downward to be accommodated in the body 10 so that a person can sit down. Alternatively, when the backrest is needed as shown in FIG. 3 (b), the backrest 16 may be slid upward to allow a person to sit in a state where the backrest is pulled out from the body 10. In order to prevent the backrest 16 from sliding even when a person is seated as shown in FIG. 3A, the ON / OFF switch is operated so that the driving mechanism of the sensor, the motor 26, the controller 30, and the like of the above-described embodiment does not operate. You can install more.

In addition, the chair 1 according to the present embodiment may be used as furniture for various purposes such as a bed or a sofa by arranging several identical chairs 1. That is, as shown in (a) of FIG. 4, the four chairs 1 are combined to be used as a sofa, or as shown in (b) of FIG. 4, the eight chairs 1 are used as an extra bed. Alternatively, as shown in FIG. 4C, 12 chairs 1 may be combined and used as a bed.

To this end, the chair 1 according to the present embodiment may be further provided with a bonding structure so as to couple a plurality of identical chairs 1 to each other. That is, by installing a hook (not shown) connected to the leg 12 of the chair 1 adjacent to the leg 12 of the chair 1, the plurality of chairs 1 can be continuously coupled, thereby this embodiment By combining a plurality of chairs (1) according to the user can be used to transform into furniture of various shapes and uses desired by the user.

In this case, the connection detecting means may be installed in the body of the chair according to the present embodiment. That is, as shown in Figure 4, when another chair is connected adjacent to the back of the chair, the back of the chair does not automatically rise, it is necessary to just maintain the shape of a rectangular box.

As the connection detecting means according to the present embodiment, various mechanical, electrical, and optical sensors capable of detecting whether another chair is connected to the back of the chair, such as a contact switch, a touch sensor, a proximity sensor, and the like may be used.

When a signal is received from the connection detecting means by connecting another chair to the back of the chair, the controller according to the present embodiment ignores the signal from the load sensor or the proximity sensor as shown in FIG. Ignoring), control the driving of the motor so that the backrest remains unslid, i.e. the backrest forms the back plate of the body so that the chair functions as an overall cuboid box-type furniture (if the backrest is not raised, the motor is not driven). Control so that the backrest is in a raised state.

As such, when connecting a plurality of chairs according to the present embodiment and using them for other purposes such as a sofa or a bed, the backrest may not be automatically raised despite the user's seating to form part of the chair assembly.

On the other hand, even when used as a bed or sofa by combining a plurality of chairs (1) as shown in Figure 4, as shown in FIG. It can also be used as a personal chair (1).

On the other hand, the body 10 of the chair 1 according to the present embodiment may be manufactured using a biodegradable plastic based on PLA (polylactic acid), which is a main ingredient of sugar beet, and a support plate 14 coupled to the upper surface of the body 10. ) Can be made of eco-friendly silicone without acetic acid. As such, by manufacturing the chair 1 using environmentally friendly materials, it is possible to give an environment-friendly image to the product, and may contribute to the improvement of the image of the company producing and selling the chair 1 according to the present embodiment.

Furthermore, the chair 1 according to the present embodiment is to be distinguished from the conventional chair 1 in terms of design as well as technical aspects. That is, as shown in FIG. 1, the coarseness of the existing chair 1 may be eliminated and the aesthetics may be improved by manufacturing the chair 1 with a simpler and simpler design.

On the other hand, by adding a test material to the silicon, which is the material of the body 10 and / or the support plate 14 according to the present embodiment, the color of the chair 1 is changed according to the body temperature of the seated person. Can be. As described above, the chair 1 according to the present embodiment, in which the color of the cube is treated according to body temperature, may be improved in aesthetic sense, and may also provide psychological comfort to the seated person.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art that various modifications of the present invention without departing from the spirit and scope of the present invention described in the claims below And can be changed.

1: Chair 3: Storage space
10: body 12: leg
13: guide protrusion 14: support plate
16: backrest 17: rack
19: guide groove 22: load sensor
24: proximity sensor 26: motor
27: pinion 30: controller

Claims (6)

A box-shaped body including a storage space opened to the rear side thereof;
A leg coupled to the lower portion of the body to contact the ground and support the body;
Guide protrusions formed to extend in the vertical direction on the back of the body;
A support plate coupled to an upper surface of the body and supporting a hip portion of a seated user;
A load sensor accommodated in the body and connected to the support plate to sense a load applied to the support plate by the weight of a seated user;
It is coupled to the guide groove and the guide groove that is matched with the guide projection so as to be slidable in the vertical direction, so that the storage space is exposed by sliding upward, and forms the back plate of the body as sliding downward A plate-like backrest to shield the storage space;
A rack disposed on the front of the backrest so as to extend in a vertical direction;
A motor accommodated in the body and generating a driving force such that the backrest slides up and down;
A pinion coupled to a drive shaft of the motor and engaged with the rack;
A proximity sensor disposed in front of the backrest to detect proximity of a seated user;
A backrest including a controller that initiates upward sliding of the backrest in response to a signal from the load sensor and controls driving of the motor such that the upward sliding height of the backrest is adjusted in response to a signal from the proximity sensor. Chair with height adjustment.
The method of claim 1,
A chair having a backrest height adjustment function, characterized in that a stopper is installed at the coupling portion of the body and the backrest so that the backrest slides intermittently with respect to the body.
The method of claim 1,
The controller, when the user is seated on the support plate starts the upward sliding of the backrest, and controls the driving of the motor so that the backrest slides to a height corresponding to the shoulder height of the user backrest height, characterized in that Chair with adjustable function.
The method of claim 1,
The leg, the chair having a backrest height adjustment function, characterized in that the hook is coupled to the legs of the adjacent chair to connect a plurality of chairs in series.
The method of claim 1,
It is accommodated in the body, and further comprises a connection detecting means for detecting whether the object in the back of the backrest,
The controller maintains a state in which the backrest is not slid and forms the back plate of the body when an object is adjacent to the back of the backrest, in preference to a signal from the load sensing means and a signal from the proximity sensor. Chair having a backrest height adjustment function, characterized in that for controlling the drive of the motor to.
Chair combination comprising a plurality of chairs of claim 5 so that the body is in contact with each other.

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