KR101095572B1 - Seat rotation apparatus for chair - Google Patents

Abstract

PURPOSE: A seat plate rotation apparatus for a chair is provided to offer elastic force to a seat plate to maintain the angle of the backbone and thigh constant. CONSTITUTION: A seat plate rotation apparatus for a chair includes an angle control part(32) which is equipped between a seat plate and leg part and controls the rotation angle of the seat plate. The angle control part includes: a first plate(33) installed on the top of the leg part; a second plate(34) which is axis-connected to the first plate in order to rotate; and a pair of elastic members(36) which are installed on the rotary shaft. In the upper side of the first plate, a plurality of first support members are formed. In the bottom of the second plate, a plurality of second support members are formed.

Description

SEAT ROTATION APPARATUS FOR CHAIR}

The present invention relates to a seat plate rotating device for a chair, and more particularly, to a chair seat plate rotating device of a chair that provides an elastic force so that a user can easily tilt forward.

In general, the chair is provided at the seat of the user seated, the leg supporting the seat and the back of the seat is formed of a set of the back support to support the user's back. In some cases, the headrest supporting the head is located on the upper side of the backrest, and armrests are installed in the seat portion or the leg or the backrest.

In recent years, as the time spent sitting on the chair is increasing, there is an increasing number of people working on their backs and waists. B Chairs with lumbar support are being developed.

Recently, Scottish and Canadian scientists have demonstrated that the angle of the upper body and thigh, which does not strain the spine, is 135 °.

In order to realize the angle between the upper body and the thighs, chairs have been developed and used to tilt the seat of the chair forward and install a knee cushion so that it does not fall over the front of the chair.

This type of chair is collectively called the Kneeling Chair, which was first introduced by Hans Christian Mengshoel in Norway in the late 1970s, and is still synonymous with ergonomic chairs in Europe, North America and Japan. Known.

Since the kneeling chair is equipped with a knee rest in front of the seat, there is an inconvenience of having to sit or stand up through the side of the chair.

In other words, the conventional kneeling chair has a problem in that the work of the chair is complicated by the installation of a knee support for supporting the knee in the front of the chair, the workability is reduced, and the production cost and manufacturing time increases due to the increase in the number of parts.

Accordingly, there is a demand for developing a technology capable of implementing the function of the kneeling chair while having a structure of a conventional general chair.

The present invention is to solve the above problems, it is an object of the present invention to provide a seat plate rotating device for a chair to provide an elastic force to the seat plate so that the spine and thighs maintain an angle of about 130 °.

Another object of the present invention is to provide a chair seat rotating device for providing a function of a niling chair applied to a general chair so as not to overdo the spine of the user.

According to a feature of the present invention for achieving the above object, the present invention is a seat plate rotating device for a chair having a seat plate and a leg, provided with an angle adjusting portion for adjusting the rotation angle of the seat plate between the seat plate and the leg The angle adjusting unit is provided on the first plate is installed on the upper portion of the leg, a second plate is coupled to the first plate to be rotatable rotationally and a pair installed on the rotating shaft for coupling the first and second plates It includes an elastic member of.

The angle adjusting unit may further include a stopper for limiting the maximum rotation angle during the forward rotation of the second plate.

The angle adjusting unit may further include a cushioning member for alleviating an impact caused by a collision with the first plate during the rearward rotation of the second plate.

A plurality of first supporting members to which the rotating shaft is coupled protrudes upward on an upper surface of the first plate, and a plurality of second supporting members to which the rotating shaft is coupled protrude downward on a lower surface of the second plate. And a through hole to which the rotating shaft is coupled to a center of the first and second support members.

The first and second supporting members are characterized in that arranged sequentially.

The elastic member is characterized in that the double torsion spring.

The double torsion spring may include a lower support part formed by bending a wire-shaped metal material in a 'c' shape, an upper support part supporting the lower surface of the second plate with both ends of the metal material, and the lower and It characterized in that it comprises a coil portion formed by winding a plurality of times between the upper support portion in the shape of a coil.

The stopper is coupled to the screw bolt is formed in the front end of the first plate, the handle is coupled to the lower end of the coupling bolt and the upper end of the coupling bolt and coupled to the upper end of the second plate of the second plate during the rotational movement of the second plate It characterized in that it comprises a seating member is mounted on the lower surface.

The shock absorbing member is spaced apart by a predetermined interval at a predetermined height at the rear end of the upper surface of the first plate, characterized in that formed in a plurality of cylinders or prisms.

The cushioning member covers a coil spring providing elastic force to a seat plate by assisting the elastic member, a cylindrical portion having an insertion space into which the coil spring is inserted, and an upper portion of the cylindrical portion, and lifting and lowering by the elastic force of the coil spring. Characterized in having a.

As described above, the present invention maintains the spine and thighs of the user at an angle of about 130 ° by rotating the seat plate about the rotation axis.

Accordingly, the present invention can minimize the stress on the user's spine even if sitting for a long time by distributing the load on the user's spine.

In addition, the present invention can rotate stably around the axis of rotation without the knee support to maintain a stable seating chair posture helps to easily take the kneeling chair posture by adopting a simple structure in a general chair.

As a result, the present invention has the effect of improving the utilization of the product, improve the concentration of the user who uses the product by providing a chair that can take a niling posture without increasing the production cost of the product has an effect to increase customer satisfaction.

1 is a perspective view of a chair to which the seat plate rotation device for a chair according to an embodiment of the present invention is applied.
Figure 2 is an enlarged perspective view of the control unit shown in FIG.
3 is an enlarged perspective view illustrating main parts of a seat plate rotating apparatus for a chair according to another embodiment of the present invention.
4 to 6 is an operational state diagram illustrating a method of operating a seat plate rotating device for a chair according to an embodiment of the present invention.

Hereinafter, a seat plate rotating apparatus for a chair according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a chair to which a seat plate rotating device for a chair according to an exemplary embodiment of the present invention is applied, and FIG. 2 is an enlarged perspective view of the adjusting unit shown in FIG. 1.

As shown in FIG. 1, a chair to which a seat plate rotating device for a chair according to an exemplary embodiment of the present invention is applied is formed at a bottom of the seat plate 10 and the seat plate 10 on which the user is seated to support the seat plate 10. It is installed between the leg portion 20, the seat plate 10 and the leg portion 20 is connected to the control unit 30, the seat plate 10 for adjusting the angle of the seat plate 10 and the length of the leg portion 20 It is connected to both sides of the backrest portion 40 and the seat plate 10 for supporting the user's back and back includes an armrest 50 for supporting both arms of the user.

In this embodiment, the leg portion 20 is provided with a rotating leg to facilitate rotation and movement.

In the present embodiment, as shown in FIG. 1, the chair has been described as having a leg 20 having a rotating leg, a backrest 40, and an armrest 50, but the present invention is not limited thereto. It is not.

That is, the present invention may be modified to include a plurality of legs instead of the rotating legs in the leg 20, or to remove the backrest 40 or the armrest 50.

As shown in FIG. 1, the adjusting unit 30 is installed at a lower portion of the seat plate 10 that is formed in a substantially square plate shape so that a user is seated to adjust the length of the leg 20 and the angle of the seat plate 10. It plays a role.

To this end, the adjuster 30 stretches the cylinder 21 embedded in the leg 20 to adjust the length of the leg 20 and the height adjuster 31 and the height adjuster 31 and the seat plate It is installed between the (10) includes an angle adjusting portion 32 for adjusting the angle of the seat plate (10).

The height adjusting part 31 is connected to a rod of the cylinder 21 embedded in the leg part, and a lever 311 for selectively releasing the compression force of the cylinder 21 and a locking device for locking the cylinder 21 in a compressed state. Include.

As shown in FIG. 2, the angle adjusting part 32 includes a first plate 33 having a height adjusting part 31 disposed on a lower surface thereof, and a second plate axially coupled to the first plate 33 so as to be rotatable. (34), a pair of elastic members 36, the maximum rotation angle during the forward rotational movement of the second plate 34, the pair of elastic members installed on the rotary shaft 35 for axially coupling the first and second plates (33, 34) The first buffer member 38 to mitigate the impact caused by the collision with the first plate 33 during the rear rotational movement of the stopper 37 and the second plate 34 to limit the.

On the upper surface of the first plate 33, a plurality of first supporting members 331 to which the rotating shaft 35 is coupled is formed to protrude upward at positions spaced apart by a predetermined interval.

The first support member 331 is rounded upwardly perpendicular to the rotation shaft 35, and a through hole 332 in which the rotation shaft 35 is inserted is formed at the center of the first support member 331.

On the lower surface of the second plate 34, a pair of second supporting members 341 are formed to protrude downward so as to be sequentially positioned with the first supporting member 331.

The second support member 341 is rounded downwardly perpendicularly to the rotation shaft 35, and a through hole 342 in which the rotation shaft 35 is inserted is formed at the center of the second support member 341.

According to the present invention, the first and second plates are formed to rotate about the axis of rotation, and the first and second support members are formed to protrude upward and downward at positions corresponding to each other of the first and second plates. To allow the second plate to rotate smoothly.

The elastic member 36 is provided with a double torsion spring providing an elastic force to lift the rear side of the seat plate 10 upward.

That is, the double torsion spring supports a lower support portion 361 formed by bending a central portion of a wire-shaped metal material in a 'c' shape, and supports the lower surface of the second plate 34 with portions corresponding to both ends of the metal material. The coil part 363 is formed by winding a plurality of times in a coil shape between the lower and upper support parts 361 and 362 so as to be coupled to the upper support part 362 and the rotation shaft 35.

The elastic member 3 coupled to the rotation shaft 35 has a lower support portion 361 and an upper support portion 362 in grooves formed on an upper surface of the first plate 33 and a lower surface of the second plate 34 so as to be fixed at a predetermined position. ) Are combined.

The stopper 37 serves to limit the maximum rotation angle at which the second plate 34 rotates forward.

To this end, the stopper 37 is a coupling bolt 371, the thread is formed on the outer peripheral surface to be fastened to the screw hole formed in the front end of the first plate 33, the coupling bolt so that the user can rotate the coupling bolt 371 Mounting member 373 is coupled to the upper end of the handle 372 and the coupling bolt 371 coupled to the lower end of the 371, the lower surface of the second plate 34 is seated during the forward rotation of the second plate 34 It includes.

When the second plate 34 is seated, the seating member 373 may be formed of a material having elasticity to mitigate an impact caused by the collision with the second plate 34.

In this embodiment, the stopper 37 is installed to limit the maximum rotation angle of the second plate 34 to about 50 degrees.

Therefore, the present invention allows the spine and thighs of the user seated on the seat plate to be maintained at an angle of about 130 °.

The first shock absorbing member 38 cushions the shock generated when the rear end of the second plate 34 and the first plate 33 collides when the user sits on the seat plate 10 and leans against the backrest 40. Play a role.

To this end, the first buffer member 38 is formed in a cylindrical shape or a prismatic shape having a predetermined height using a material having elasticity such as rubber.

And the first buffer member 38 is preferably formed in at least two or more so as to be spaced apart by a predetermined interval in order to support the rear end of the seat plate 10 stably.

On the other hand, Figure 3 is an enlarged perspective view of the main portion of the seat plate rotating device for a chair according to another embodiment of the present invention.

As shown in Figure 3, the seat plate rotation device for a chair according to another embodiment of the present invention is similar to the configuration in the above embodiment, except that the second buffer member 39 instead of the first buffer member 38 It is provided.

The second buffer member 39 serves to support the rear end of the seat plate 10 and to support the elastic member 36 to provide an elastic force to the seat plate 10. A cylindrical portion 393 in which an insertion space 391 into which the 392 is inserted is formed, and a cover 394 that lifts and moves by the elasticity of the spring 392 is shielded above the cylindrical portion 393.

The coil spring 392 has a preset height and elastic modulus to rotate the rear end of the seat plate 10 forward.

Cylindrical portion 393 and cover 394 is preferably made of a material having elasticity similar to the first buffer member 38 of the embodiment.

Next, the coupling relationship of the chair to which the seat plate rotating device for the chair according to the preferred embodiment of the present invention is applied will be described in detail with reference to FIGS. 1 and 2.

First, as shown in FIGS. 1 and 2, the lever 311 and the locking device of the height adjusting unit 31 are installed by connecting to the cylinder 21 embedded in the leg 20 of the chair.

Then, after placing the first plate 33 on the height adjusting unit 31, the height adjusting unit 31 and the first plate 33 are coupled using a bolt.

Subsequently, the first and second support members 331 and 341 and the pair of elastic members 36 formed on the upper surface of the first plate 33 and the lower surface of the second plate 34 are sequentially positioned with each other. 2 The rotating plate 35 passes through the through holes 332 and 342 of the support members 331 and 341 and the coil part 363 of the elastic member 36 to allow the second plate 34 to rotate about the rotating shaft 35. Coupling shaft.

At this time, the lower and upper support portions 361 and 362 of the elastic member 36 are coupled to and fixed to the grooves formed on the upper surface of the first plate 33 and the lower surface of the second plate 34.

Then, a plurality of first or second buffer members 38 and 39 are provided at the rear end of the first plate 33.

As such, when the assembling of the first and second plates 33 and 34 is completed, the armrest 50 is assembled to both sides of the seat plate 10, and the backrest 40 is assembled to the rear end of the seat plate 10. Complete the assembly.

Next, with reference to Figures 4 to 6 will be described in detail the operation method of the chair to which the seat plate rotation device for a chair according to the present invention is applied.

4 to 6 is an operational state diagram illustrating a method of operating a seat plate rotating device for a chair according to an embodiment of the present invention.

4 shows an initial state of the chair before the user is seated, FIG. 5 shows a state in which the user is seated on the seat plate, and FIG. 6 shows a state in which the user is in a kneeling position.

That is, as shown in FIG. 4, the second plate 34 rotates forward by the elastic force of the elastic member 36, and the stopper 37 limits the maximum rotation angle of the second plate 34. do.

In the present embodiment, the second plate 34 and the seat 10 are lifted at the rear end to maintain an angle of about 50 ° with the first plate 33.

When the user is seated on the seat plate 10 in this state, as shown in FIG. 6, while the elastic member 36 is elastically deformed, the second plate 34 rotates toward the rear about the rotation axis 35. Done.

At this time, the first or second shock absorbing members 38 and 39 provided on the upper surface of the first plate 33 cushion the impact caused by the collision with the second plate 34 so that the user can be comfortably seated.

Subsequently, when the user seated on the seat plate 10 shows the user's leg on the rotational leg of the leg part 20 to take the posture of the kneeling chair and then bows the upper body forward, as shown in FIG. The plate 34 is rotated toward the front about the rotation axis 35 by using the elastic force of the elastic member 36.

As such, the second plate 34 is rotated and seated on the seating member 373 of the stopper 37, so that the second plate 34 and the seat plate 10 are approximately 50 ° with the first plate 33. Maintain the angle.

At this time, the user straightens the spine toward the top, and keeps the centered state so that the upper body is not lean forward by placing both hands or elbows slightly on the desk.

Accordingly, the present invention is to maintain the spine and thighs of the user at an angle of about 130 ° to distribute the load on the user's spine to minimize the stress on the user's spine even if sitting for a long time.

In addition, the present invention can rotate stably around the axis of rotation even without the knee support to maintain a stable stirring chair posture to improve the user's concentration, and to simplify the structure of the chair can be used easily.

Through the process as described above, the present invention allows the user to be seated on the chair in the kneeling posture by installing the angle adjuster to rotate the seat plate in a general chair.

As mentioned above, although the invention made by the present inventor was demonstrated concretely according to the said Example, this invention is not limited to the said Example and can be variously changed in the range which does not deviate from the summary.

For example, in the above embodiment, the angle adjuster 32 is described as being installed between the length adjuster 31 and the seat plate 10, but the present invention is not necessarily limited thereto.

That is, in the present invention, the length adjusting part 31 is removed and the angle adjusting part 32 is installed between the leg part 20 and the seat plate 10, or the backrest 40 is rotated on the length adjusting part 31. After installing the rotation angle adjustment unit for adjusting the angle may be changed to install an angle adjustment unit 32 between the rotation angle adjustment unit and the seat plate 10.

In addition, in the above embodiment, the armrest 50 and the backrest 40 are described as being connected to the seat plate 10, but the present invention removes the armrest 50 and the backrest 40, or the armrest 50 and the backrest ( 40 may be modified to connect the second plate 34 or the first plate 33.

10: seat 20: leg portion
21: cylinder 30: control unit
31: height adjustment part 311: lever
32: angle adjuster 33, 34: first, second plate
331,341: First and second support members 332,342: Through holes
35: rotating shaft 36: elastic member
361: lower support 362: upper support
363: coil portion 37: stopper
371: coupling bolt 372: handle
373: mounting member 38, 39: first, second buffer member
391: insertion space 392: coil spring
393: cylinder 394: cover
40: back 50: armrest

Claims (10)

A seat plate rotating device for a chair having a seat plate and a leg portion,
Between the seat plate and the leg portion is provided with an angle adjusting portion for adjusting the rotation angle of the seat plate,
The angle adjustment unit
A first plate installed on the upper part of the leg,
A second plate axially coupled to the first plate to enable rotational movement;
It includes a pair of elastic members are installed on the rotating shaft for coupling the first and second plates,
On the upper surface of the first plate is formed a plurality of first supporting members to which the rotation shaft is coupled to protrude upwards,
On the lower surface of the second plate is formed a plurality of second supporting members to which the rotation shaft is coupled to protrude downward,
The seat plate rotating device for a chair, characterized in that the through hole is formed in the center of the first and second support members are coupled to the rotating shaft. The method of claim 1, wherein the angle adjustment unit
And a stopper for limiting the maximum rotation angle during the forward rotation of the second plate. The method of claim 1 or 2, wherein the angle adjustment unit
And a shock absorbing member for alleviating an impact caused by a collision with the first plate during the rearward rotation of the second plate. delete The method of claim 1, wherein the first and second support members
Chair seat plate rotation device characterized in that arranged sequentially. The method of claim 1,
The seat member rotating device for the chair, characterized in that the elastic member is a double torsion spring. The method of claim 6, wherein the double torsion spring
A lower support part formed by bending a central portion of a wire-shaped metal material into a 'c' shape,
An upper end supporting portion for supporting a lower surface of the second plate at both ends of the metal material;
And a coil part formed by winding a plurality of times in a coil shape between the lower and upper support parts so as to be coupled to the rotating shaft. The method of claim 2, wherein the stopper
Coupling bolt fastened to the screw hole formed in the front end of the first plate,
A handle coupled to a lower end of the coupling bolt;
And a seating member coupled to an upper end of the coupling bolt and seated on a lower surface of the second plate during a forward rotational movement of the second plate. The method of claim 3, wherein the buffer member
The seat plate rotation apparatus for a chair, characterized in that formed in a plurality of cylinders or prismatic shape spaced apart by a predetermined interval at a predetermined height at the rear end of the upper surface of the first plate. The method of claim 9, wherein the buffer member
A coil spring which assists the elastic member to provide an elastic force to a seat plate;
A cylindrical portion having an insertion space into which the coil spring is inserted;
And a cover for shielding an upper portion of the cylindrical portion and lifting and lowering by an elastic force of the coil spring.

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