KR20130120558A - Tilting control system for chair - Google Patents

Abstract

The present invention relates to a chair for supporting a human body by corresponding to postures of human using chairs and, more particularly, to the chair capable of improving the concentration of the human by properly supporting the human such as researchers sitting on the chair to be comfortable. The present invention provides stability and comfortability as the lower body of an operator is stably supported without being pushed from a seating unit and the upper body is supported by backrest in order for the weight of the operator to be dispersed with the seating unit. In case the operator is closely attached to a desk or a workbench in a state in which the spine of the operator is straight, the front femoral part of the operator applies large pressure to the front side of the chair. For improving this, the seating unit is formed to be smoothly rotated or fixed to the front in order for the distribution of the pressure applied to the femoral part to be equalized. If the upper body leans back for the rest, the seating unit is to be rotated or fixed.

Description

{Tilting Control System for Chair}

The present invention relates to a chair, a stool adjustment device that acts to comfortably support the human body of the operator by changing the inclination of the seat plate of the chair to respond well to the changing posture of the worker.

The general form of the chair is composed of a seat plate for holding the seat of the lower body for the main purpose and a body part for fixing the seat plate, or having an additional backrest for supporting the spine, And a backrest only. In order to support the human body comfortably, the shape of the seat is changed or the shape of the backrest is modified. The shape of the backrest is fixed. The backrest is made elastic to cope with the fluctuating human body. And the like have been tried for general purpose, and the seat itself has some tilting or sliding function.

The fixed type of chair is not suitable for the human body to change back and forth regardless of its shape, but it is relatively suitable for resting purpose that the backrest is turned backward, and the backrest is elastic, Gives a sense of stability. However, the backrest can be tilted backward to provide comfort, but the seat remains level and therefore receives forward force.

In addition to the inclining device of some backrests, the seat is tilted. However, all of them were not enough because they gave a little tilting function. These tilting functions were mainly tilted backward, and the tilting back function tilted backward was used, or the tilt function was tilted forward, and the tilting function was very small. It was enemy or impractical.

They were an elastic body that tilted forward and tilted backward, which was not suitable for tilting back and forth.

In addition, when tilting backward, the restoring force of the chair continues to act in the inclined posture state, so that it should be intentionally restrained beyond its restoring force.

When the posture of the worker is closely attached to the desk or the workbench with the spine straightened, the front portion of the thigh of the worker especially acts on the front of the chair, and the pressure distribution on the supporting portion becomes uneven. Accordingly, fatigue is accumulated in the human body as time elapses while the worker is seated in the chair.

It is desirable that when the chair user leans back for a rest, the force of pushing the hips toward the front of the chair does not work.

For this purpose, it is preferable to tilt the seat so that the tilt of the seat can be sufficiently tilted.

It is preferable that the seat plate is inclined enough not only to the rear but also to the front.

It is preferable to tilt the seat when tilted. Also, it is recommended to return the tilted seat back to its original position when released.

The seat that is tilted by the force of the user must not compete with the user due to the force of continual recovery.

The chair is supported by a horizontal shaft member formed horizontally in the horizontal direction of the chair so that the hips are not pushed from the seat plate even when the chair occupant rests and rests, and the pressure concentrated on the thighs is distributed even when working forward. The other end includes a seat plate support member 90 fixed to the bottom of the seat plate; The horizontal plate member formed in the horizontal direction can be tilted to the front and back of the chair by the rotation axis.

In order to allow the tilt to work smoothly and recover again, the tilt member includes an elastic member that acts in response to the front tilt and the rear tilt of the seat plate.

In particular, the elastic member acting in response to the rear tilt includes an elastic member that acts independently so as not to affect the front tilt when the chair is tilted forward; At least one of the elastic members acting in response to the front tilt and the rear tilt used torsional elasticity.

In the above configuration, several elastic members corresponding to the forward rotation and the backward rotation may be applied, and various methods of elasticity may be employed. As one such method,

Wherein at least one of the elastic members comprises a torsional elastic member acting corresponding to a forward tilt of the seat; At least one of the elastic members acting in correspondence with the backward inclination of the seat may be configured to include a torsion elastic member.

In addition, the chair user may have different degrees of elasticity of the elastic member depending on the body shape and the body weight. Therefore, it is preferable that the elastic member is capable of adjusting the elastic force. Particularly, since the backward tilting is greatly different in the structure of the human body, at least one of the elastic members works in correspondence with the backward tilting and independently adjusts the elastic force.

In the above configuration, several elastic members corresponding to the forward rotation and the backward rotation may be applied, and various methods of elasticity may be employed. In addition to being composed of only such torsional elastic members,

The elastic member may be composed of a torsional elastic member using a torsional elasticity and a stretchable elastic member using a stretching elastic force.

In the configuration of the elastic member, the forward tilting does not require a large elastic force in the application of the human body. Therefore, unlike the elastic member corresponding to the backward tilting, a large problem may not be caused even if it is not constituted independently. However, it is also desirable that the elasticity can be adjusted.

Therefore, it is preferable that at least one of the elastic members acts in response to the front tilt and can independently adjust the elastic force.

The torsionally elastic member can be constituted as an elastic member corresponding to the backward inclination of the seat. The configuration of the torsional elastic member is not limited to the configuration of the torsional elastic member, but is configured so as to control the elastic force thereof.

That is, one end of at least one torsional elastic member of the formed elastic member is fixed to the support rod 58, and a pressure adjusting rod 76 is screwed into the screw hole opened in the rotary body 79 rotatably engaged with the support rod 58, Combined; The elastic force of the elastic member fixed to the support member 58 can be adjusted by the rotation of the pressure adjusting member.

The torsional elastic member can select a torsion coil spring. The torsion coil spring has two ends, one of which is fixed to the support 58 as described above, and the other end of which is to support and form a support on a part of the fixed support 93.

This end can also be configured to adjust its elasticity. That is, by forming a screw hole in the support portion and screwed with the pressure regulator (76a), to adjust the elasticity of the torsion coil spring by pushing or slowing one end of the torsion coil spring by the forward and backward of the pressure regulator (76a) can do.

The elastic member employed may be a stretchable elastic member. When at least one elastic member of the elastic members constituting the elastic member is employed, the upper body (79a) which is screwed with the pressure regulating member (76) and supports the upper portion of the elastic member is moved up and down, The elasticity of the elastic member can be controlled.

At least one of the support (58) and the fixed support (93) for supporting the elastic member to form a bracket, the rotating body 79 is rotatably coupled to the bracket, the rotating body forms a through hole, the through By coupling the pressure controller 76 to the pressure controller 76 can be appropriately rotated in response to the rotation of the seat plate to respond. Among the elastic members may include an elastic member constituting such a pressure adjuster 76.

It is preferable to include a braking device for fixing the inclination of the seat plate with respect to each of the above-described various elastic members and their respective constitution methods realized.

The brake device can be fixed by actuating an operating part of the brake device fixed to the seat plate rotating back and forth, to the brake frame 83 fixed without rotation relative to the seat plate inclined back and forth. By the operation of such a brake device may include a cam in a configuration that acts in close contact with the brake frame (83).

The structure of the brake device will be described in more detail.

A brake frame 83 configured concentrically with the axis of rotation of the seat plate, the portion being fixed relative to the rotating seat plate; And a brake case (84) fixed to the seat; And brake pads 81 and 120 which are coupled to the brake case and brought into close contact with the brake mold 83. [

The present invention changes the tilting shape of the chair so that the chair can be well supported according to the posture change of the seated person, thereby relieving the tension of the human body and preventing the accumulation of fatigue, thereby providing comfort to the operator and maximizing the working efficiency.

The chair can be tilted corresponding to the posture of the worker and can be fixed by the operation of the brake even when the posture of the worker is tilted forward or back without the movement of the body of the chair itself so that the seated person can no longer receive the restoring force of the chair And the chair is kept in a fixed form even when the worker's momentary force fluctuates, thereby stably supporting the worker's spine.

If we look more at each of these cases,

When the worker's posture tilts toward the desk or the workbench, the front of the thigh of the worker particularly exerts a great pressure on the front of the chair. Therefore, by rotating the seat plate naturally forward to solve the problem, the distribution of the pressure acting on the thighs can be more uniform and more comfortable.

When the operator tilts the upper body backward for resting, the lower body of the worker can be rotated backward so that the lower body of the worker is stably supported without being jammed at the seat, and the upper body is supported by the backrest so that the weight of the worker is dispersed and supported on the seat. to provide.

Fig. 1 is a perspective view of a chair including a chair tilt adjusting device in which a tilt of a seat is buffered and restored by a torsion elastic member on a seat turning horizontal axis
Fig. 2 is a perspective view of the chair viewed from the left rear of the chair; Fig.
3 is an exploded view of a chair hiding and showing the seat and back portion of the chair
[Fig. 4] Fig. 1 shows a backward tilting state of the chair
[Fig. 5] A chair perspective view including a torsional elasticity of the leaf spring on the horizontal rotation axis of the seat plate and a chair tilt adjustment device by the elastic member
Fig. 6 is a perspective view of a chair including a chair tilt adjustment device using elasticity of a torsion coil spring on a horizontal rotation axis of the seat and elastic members using elasticity of stretching
[Fig. 7] A perspective view seen from the lower left front of the chair in Fig. 6
8 is a side view of the chair in Fig. 6
9 is an exploded view of the brake device fixed to the lower portion of the seat

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

A horizontal shaft 91, which is a horizontal shaft member horizontally in the left and right directions of the chair, is formed on the fixed support 93 on the upper portion of the chair structure 92. One end of the left-side plate supporting member 90 is coupled to the horizontal axis so as to be rotatable and tilted back and forth. The other end of the seat support member 90 is fixed to a lower portion of the seat 15 to support the seat and allows the seat to be tilted back and forth with the rotation axis.

It is preferable that the seat 15 is not suddenly tilted when tilted. To this end, an elastic member resisting the tilting of the seat is involved.

The elastic member includes an elastic member which acts in response to the front tilt and the rear tilt of the seat plate; The elastic member acting in response to the rear tilt includes an elastic member independent of the front tilt; At least one of the elastic members acting in response to the front tilt and the rear tilt is to use torsional elasticity.

As an example of the elastic member, the coil spring is fitted to the horizontal shaft 91, one end of the coil spring is supported to a part of the support 93, and the other end is fixed to the movable support 58.

1 to 4 show a torsion coil spring using torsion elasticity as an example of the elastic member. It includes a torsionally elastic member that acts in response to the front tilt of the seat plate; As an example including a torsionally elastic member acting in response to the rear tilt of the seat plate, the elastic member that resists or recovers from the front tilt and the rear tilt of the seat plate is configured on the horizontal axis 91.

The method using this torsional elasticity can be used by twisting the coil in a winding manner or twisting it in a loosening manner. Whichever method you use, you can use it to replace each other if you pay a little attention to the difference. In the present invention, an example of elastic force by a method of twisting a coil spring is shown.

One end of the coil spring 53, which is a front elastic member 53 that is resistant to forward tilting, is supported on the front side of the chair, and a portion of the coil spring 73, which is the rear elastic member 73, The supporting structure was arranged behind the chair.

This is an arbitrary configuration, and there is only a difference in whether the coil spring is pressed or pulled, and the same effect can be obtained even if the configuration is reversed.

In the present invention, the pressing method is shown as an example in which the pressing method is considered to be more stable.

Hereinafter, the torsion coil spring 53 as the front elastic member and the torsion coil spring 73 as the rear elastic member are simply referred to as the coil spring 53 and the coil spring 73 when there is no confusion by the context and the reference numerals following.

The coil spring 53 using the torsional elasticity to resist forward tilting will be described as follows.

The coil spring 53, which is the front elastic member 53, is inserted into the horizontal shaft 91, which is the rotation axis of the seat.

The coil springs 53 may be formed as many as necessary. Here, an example is shown in which one coil spring 53 is constituted.

One end of the torsion coil spring 53 is fixed to the chair front support stand 58 and the other end is supported by the protruding portion of the fixed support stand 93.

A bracket 78 is formed at the lower side of the front support 58 and a rotatable rotary body 79 is rotatably coupled to the bracket 78. A threaded hole is formed in the rotating body 79 and is engaged with a pressure regulating base 76 on which a screw is formed. The pressure adjusting unit 76 is passed through the long hole drilled in the fixed support 93, as shown in Figures 2 to 4, the handle 57 is coupled. Therefore, even if a restoring elastic force is applied to restore the coil spring 53 coupled to the support 58, the portion of the handle 57 is restricted to the fixed support 93.

 The bracket 78 and the rotating body 79 described above can also be formed on the fixed support 93, but it is simple to configure only one of them. The combination of the rotating body 79 and the pressure regulating member 76 constituting the fixed support 93 makes the pressure regulating member 76 slidably fitted into the through hole of the rotating body.

The upper end of the pressure regulating member 76 passing through the rotating body 79 has a rounded sphere shape; And is brought into contact with an adapter 70 which is engaged with a seat and accommodates a round sphere at the end of the pressure adjuster 76 when the seat is in a horizontal state.

When the seat is turned forward;

The front adapter 70 presses the pressure regulator 76 and the pressure regulator 76 freely passes under the hole opened in the support 93 and is pushed downward. Then, the rotating body (79) combined with the pressure adjusting table (76) is pushed down. At this time, the support 58 to which the rotating body 79 is coupled is also pressed. However, since one end of the coil spring 53, which is the front elastic member 53 for giving a torsional elastic force, is fixed to the support base 58, the coil spring 53 to be pressed is resiliently resisting.

The rotary plate 79 rotatably coupled to the support table 53 when the seat plate is tilted forward and pressed against the support table 58 is rotated and pressed at an appropriate angle and is pressed against the fixed support table 93 formed on the chair structure 92 The perforated hole is also a slot having a certain clearance, so that the pressure regulating block 76 is pressed correspondingly to the rotation of the seat plate.

It is preferable that the coil spring is pushed to some extent from the beginning even when the seat plate is horizontal when the coil spring 53 as the front elastic member 53 is mounted so that the elastic force is latched.

The adjustment of the elastic force of the elastic member corresponding to the forward tilting is as follows. This process is limited to the elastic member, and elasticity control is performed independently.

When the elastic force of the coil spring 53 which is the front elastic member 53 resisting the forward rotation is to be further increased, the rotational body 79, which is screwed to the pressure adjusting member 76 by turning the pressure adjusting member 76, Let it down. Then, the restoring elastic force of the coil spring 53 is increased, so that the seat plate is rotated forward and resists with a stronger force when the seat plate is pressed.

Of course, when the initial elastic force is reduced, the pressure regulating block 76 is turned and the rotating body 79 screwed to the pressure regulating block 76 is raised upward.

Since the pressure regulating block 76 is rotated in a downward direction by rotating the pressure regulating block 76 so that the rotating body 79 coupled to the pressure regulating block 76 is moved downward or upward, Does not move up or down.

The above-described process in the forward rotation is also applied to the torsion coil spring 73 using the torsional elasticity configured for the backward rotation. In other words,

The construction and operation of the torsion coil spring 73 which resists the backward tilting will be described as follows.

The coil spring 73, which is the rear elastic member 73, is inserted into the horizontal shaft 91, which is the rotary shaft of the seat. The coil spring 73 constituted may be constituted by a plurality of coil springs as required. There is shown an example in which two coil springs are constituted in addition to the example in which one coil spring is used as the front elastic member 53 which resists the forward tilting described above.

One end of the coil spring 73 is fixed to the chair back support 58 and the other end is supported by the protrusion of the fixed support 93. Here, the shape of the support rods 58 may be configured separately as the support rods 58 formed on the coil springs 53 corresponding to the forward tilts, but they may be elongated as shown in Fig. 3 so that the two coil springs cooperate . In this example, the joint structure is more stable and shows a joint structure.

A bracket 78 is formed on the lower side of the support table 58 and a rotatable rotary body 79 is rotatably coupled to the bracket 78. The rotating body 79 is formed with a screw hole, and is engaged with a screw formed on the pressure adjusting member 76 on the screw. The pressure regulator 76 is passed through the long hole drilled in the fixed support 93, as shown in Figures 2 to 4, the handle 77 is coupled. Therefore, even if the coil spring 73, which is the rear elastic member 73 coupled to the support rod 58, is elastically urged to be restored to its original position, the knob 77 can not be restored if it is caught by the fixed support rod 93.

The upper end of the pressure regulating block 76, which has passed through the rotating body 79, has a rounded spherical shape and is connected to an adapter 70 for receiving a rounded sphere at the end of the pressure regulating block 76 when the seat is horizontal. As shown in Fig.

Rotating the seat backwards;

The seat back adapter 70 presses the rear pressure regulating block 76 and the pressure regulating block 76 is freely passed under the hole opened in the support 93 at the bottom. Then, the rotating body 79 coupled with the pressure adjusting member 76 is also pushed down. At this time, the support 58 to which the rotating body 79 is coupled is also pressed. However, since one end of the coil spring that gives torsional elastic force is coupled to the support table 58, the coil spring that is pressed together resiliently resists.

The rotary plate 79 rotatably coupled to the support table 58 when the seat plate is tilted backward and pressed against the support table 58 is rotated and pressed at an appropriate angle and is pressed against the fixed support table 93 formed on the chair structure 92 The perforated hole is also a slot having a certain clearance, so that the rear pressure regulating plate 76 corresponds to the rotation of the seat plate.

The bracket 78 and the rotating body 79 may also be formed on the fixed support 93 in the pressure regulating block 76 formed on the rear side, but it is simple to configure only one of them. The combination of the rotating body 79 and the pressure regulating member 76 constituting the fixed support 93 makes the pressure regulating member 76 slidably fitted into the through hole of the rotating body.

It is preferable that the coil spring is pressed to some extent from the beginning even when the seat plate is horizontal at the time of mounting the coil spring 73 which is the rear elastic member 73 so that the elastic force is latched.

The adjustment of the elastic force of the elastic member corresponding to the backward inclination is as follows. This process is limited to the elastic member, and elasticity control is performed independently.

When the elastic force of the coil spring 73 which is the rear elastic member 73 resisting the backward rotation is to be further increased, the rotational body 79, which is screwed to the pressure adjusting member 76 by turning the pressure adjusting member 76, Let it down. Then, the restoring elasticity of the coil spring is increased, and the seat plate is rotated backward to resist the force with a stronger force. Of course, when reducing the initial elastic force, the pressure regulating block 76 is rotated so that the rotating body 79 coupled to the pressure regulating block 76 is moved upward.

Here, since the pressure regulating block 76 is turned even if it is turned, the pressure regulating block 76 itself does not move up or down. At this time, however, the rotating body 79 screwed to the pressure adjusting member 76 is moved up or down due to the screw connection.

Although a method of adjusting the elastic force of the elastic member interposed in the forward and backward rotation is described as a method of adjusting one end of the elastic member on the side of the pressure adjusting member 76, the pressure adjusting device may be configured on the other end of the torsion coil spring. The other side of the torsion coil spring described above is supported by a portion of the support 93.

Such an example is shown in FIGS. 1 and 5. The pressure regulator 76a is screwed to the protruding portion formed by the elastic member on the fixed support 93. When the pressure regulator 76a is moved forward and backward, the front end of the pressure regulator 76a is opened at one end of the torsion coil spring. By pushing or slowing down, the initial elasticity of the torsion coil spring can be adjusted by increasing or decreasing it.

The position of the pressure regulator 76a may be configured to protrude to the rotating shaft support bracket as shown in FIG. 1, or may be configured to form a protrusion at an appropriate portion of the support 93 as shown in FIG.

It is preferable that the initial elastic force and the elastic modulus of the elastic member involved in the forward rotation and the elastic member involved in the rearward rotation are different from each other in consideration of the magnitude of the external force causing the forward and backward rotation.

When the seat is rotated forward or backward against the elastic force of the elastic member, the force to return to the home position by the elastic force of the elastic member continuously acts. Therefore, the chair user must continuously resist this force and balance. This is another stressful thing.

1 to 8, the brake frame 83 was fixed to the fixed support 93 concentrically with the rotating shaft, and the brake was applied to the brake frame 83 to fix the inclination of the rotated seat.

4 shows the front and rear elastic members and their operation when the seat 15 is rotated backward. That is, when the seat 15 is rotated backward, the elastic member which resists the backward rotation is deformed to give the restoring elastic force, but the elastic member which resists forward rotation and the pressure adjusting member 76, It is released from the adapter 70 and has no influence on the backward rotation.

On the other hand, when the seat plate is inclined forward, the opposite action occurs to the front elastic member and the rear elastic member.

If a plurality of coil springs for imparting torsional elasticity are provided, it is possible to control the respective elastic forces individually so as to smoothly adjust the elastic forces.

5, instead of the coil spring as the torsionally resilient member using the torsional elasticity, the plate spring 53 is completely equivalent. For example, one end of the leaf spring 53 is fixed to a rotating shaft or a portion provided separately to the vicinity of the rotating shaft, and the other end is coupled to the supporting member 58 like one end of the torsion coil spring is coupled. This configuration is very easy and is the same as that of the coil spring.

In Fig. 5, the plate spring corresponding to the forward rotation is exemplified, but this adoption can be applied to the elastic member corresponding to the backward rotation.

The leaf spring may also be referred to as an elastic deformation in which one end is fixed and the other end is bit-edged. In this sense, the torsional elastic member using torsional elasticity in this specification means that it includes a leaf spring in addition to the above-mentioned torsional coil spring.

1 to 4, the coil spring 53, which is the front elastic member 53 using the torsional elasticity of the rotary shaft 91, and the leaf spring 53, And an example in which the torsion coil spring 73 using the torsional elasticity is used as the rear elastic member 73 acting in correspondence with the backward inclination has been shown.

6 to 8 show a tilt adjusting device including a torsional elastic member using a torsional elasticity formed on the rotary shaft 91 and a stretchable elastic member using a stretching elastic force provided on the fixed support 93 in the tilting of the seat plate 15 An example is shown. Here, an example in which a torsional elastic member using torsional elasticity is applied to the rotating shaft 91 is shown as an elastic member that works in response to forward tilting. As the rear elastic member 73 that works in response to backward tilting, An example using coil spring 73 is shown.

However, it is also possible to use a stretching elastic force in forward rotation and a torsional elasticity in backward rotation in reverse.

In this example, it is generally assumed that the force against the backward rotation should be larger, and it is predicted that the elastic member using the expansion and contraction elastic force is more effective as the elastic member resistant to the backward rotation. An example of using a stretching elastic force as a member is shown.

In this example as well, the structure and operation of the torsion elastic member acting in accordance with the forward rotation are the same as those described above.

Now, the configuration and operation of the stretch elastic member operating in response to the backward rotation are as follows. 6 to 8, the elastic member constituted at the rear is a stretchable elastic member, and since the stretchable coil spring is shown as an example of the stretchable elastic member, if there is no confusion due to the context and the following reference marks, (73).

The lower end of the coil spring 73, which is the rear elastic member 73 constituted at the rear of the chair, is fixed to the chair support support 93. And the upper end is supported by the upper support chain upper body 79a. The upper body 79a is screwed with the pressure regulating member 76. [ The lower portion of the pressure regulating member 76 is coupled to the handle 77 through the elongated hole formed in the fixed support 93.

The elastic force of the coil spring sandwiched between the upper body 79a and the fixed support 93 with respect to the pressure adjuster 76 is adjusted by adjusting the distance therebetween.

The coil springs thus configured can be constituted as many as necessary. In this example, two coil springs are shown.

The shape of the upper body 79a may be separately formed, or may be configured such that the upper body 79a is elongated as the support base 58 formed in the coil spring corresponding to the backward tilting, so that the upper body 79a is jointed to the two coil springs. In this example, an example has been shown in which it is separated and configured independently of each other.

The upper end of the pressure regulating member 76 passing through the upper body 79a has a rounded sphere shape; And is in contact with the adapter 70 configured on the seat plate, which accommodates the rounded sphere at the end of the pressure regulator 76 when the seat plate is horizontal. The adapter 70 corresponding to the backward rotation is formed to be slightly longer in consideration of the fact that the pressure regulating plate 76 may not move concentrically with the left plate rotary shaft 91 when the seat plate is rotated.

The hole formed in the fixed support 93 formed on the chair structure 92 is also a slot having a clearance to some extent, so that it corresponds to the rotation of the seat.

This consideration of the clearance between the adapter 70 formed in the rear and the hole drilled in the fixing support 93 constitutes the above-described bracket 78 and the rotating body 79 in the rear fixing support 93 so as to adjust the pressure adjuster 76. When combined with the pressure adjusting unit 76 can operate more stably in response to the rotation of the seat plate. At this time, the combination of the rotating body 79 and the pressure adjusting member 76 constituting the fixed support 93 is a sliding coupling that the pressure adjusting member 76 is fitted in the through hole in the rotating body.

When the seat back is rotated backward, the rear adapter 70 presses the pressure regulator 76 and the pressure regulator 76 freely passes under the hole opened in the lower support 93. At this time, the upper body 79a coupled with the pressure regulator 76 is pressed downward, and the coil spring coupled to the upper body 79a is pressed to resiliently resist.

It is preferable that the coil spring is pressed to some extent from the beginning even when the seat plate is horizontal at the time of mounting the coil spring 73 which is the rear elastic member 73 so that the elastic force is latched.

The adjustment of the elastic force of the stretching elastic member corresponding to the backward tilting is as follows.

When it is desired to further increase the elastic force of the coil spring 73 which is a stretchable elastic member using the stretching elastic force as the rear elastic member 73 that resists the backward rotation, the pressure adjusting member 76 is rotated and screwed to the pressure adjusting member 76 The upper body 79a is lowered to further compress the expansion coil spring. Then, the restoring pressure of the coil spring is increased, so that the seat plate is rotated backward and pressed with a stronger force when pressed.

Of course, when the initial elastic force is reduced, the pressure regulator 76 is rotated so that the upper body 79a coupled to the pressure regulator 76 is raised upward.

Here, since the pressure regulating block 76 is turned even if it is turned, the pressure regulating block 76 itself does not move up or down. At this time, however, the upper body 79a screwed to the pressure regulator 76 is moved upward or downward due to the screw connection.

When the knob 77 of the pressure regulator 76 is turned, the upper body 79a can also be turned by the friction due to friction. Therefore, the upper body 79a is prevented from being held by the upper body 79a when rotated, and the upper body 79a is moved upward or downward by turning the knob 77 of the pressure adjusting belt 76.

If it is inconvenient for the upper body 79a to be held incapable of turning, the coil spring 73 using the torsional elasticity in FIGS. 1 to 4 may be fixed to the upper body 79a And the other end can be freely rotated by inserting a coil into the horizontal shaft 91. [

In addition, as described above, when the two upper bodies 79a are connected to each other, the two upper bodies 79a can be prevented from turning easily. However, in order to be able to adjust the pressure of the plurality of coil springs 73 configured individually, it is preferable to configure separately.

However, since the process of moving the upper body 79a to adjust the initial elastic force is not a frequent process, the upper body 79a may be manually rotated, In order to avoid the complexity of the drawings, the present embodiment is shown in a drawing that does not include any other configuration.

It is also simple to replace the above elastic member with a twist elastic member using the above-mentioned leaf spring.

When the seat is rotated forward or backward against the elastic force of the elastic member, the force to return to the home position by the elastic force of the elastic member continuously acts. Therefore, the chair user must continuously resist this force and balance. This is another stressful thing.

Accordingly, as shown in FIGS. 1 to 8, the brake frame 83 is fixed to the support shaft 93 concentrically with the rotation shaft 91, and the brake device acting on the brake frame 83 has a seat plate. Fix the slope of the.

As shown in Fig. 4, when the seat is rotated forward or backward, an example of the operation of the elastic member corresponding to the forward rotation and the elastic member corresponding to the backward rotation is that the seat plate 15 is rotated backward The front elastic member acting in accordance with forward rotation is released from the adapter 70 formed at the front and when the seat is rotated forward, the elastic member arranged at the rear, corresponding to the rearward rotation, So that they do not influence each other.

That is, the elastic member which operates in response to forward rotation when the seat is rotated forward acts independently of the elastic member acting in correspondence with the backward rotation; Conversely, when the seat back is rotated backward, the elastic member acting in correspondence with the backward rotation acts independently of the elastic member acting in response to the forward rotation.

However, the elastic member acting in accordance with the forward rotation does not have a larger elastic force than that of the rearward rotating elastic member, so that the elastic member does not have a large influence even if it is not independently constituted. Therefore, the elastic member acting in accordance with forward rotation may be interlocked with the rearward rotating elastic member when the seat back rotates.

However, it is preferable that the elastic member acting in correspondence with the backward rotation in the frontward rotation always acts independently of the forward rotational elastic member.

On the other hand, in the present embodiment, when a plurality of elastic members having the same role in the backward rotation and the forward rotation are constituted, they are composed of elastic members of the same type, but also different types of elastic members may be mixed.

As shown in Figs. 1 to 8, the brake mold 83 is formed in a circular shape to correspond to a large rotation of the seat plate. This brake frame 83 may or may not be a perfect circular shape and may be a semicircular shape. It may be a shape that corresponds to a considerable rotation of the seat, and it may be a circle having no smooth edges, and it may be of any shape as long as the brake attached to the brake mold 84 according to the rotation of the seat as a whole can respond well.

The fixed part of the seat plate is pressed against the brake frame by the operating part of the brake device constituted on the seat plate rotating forward and backward with respect to the brake frame 83 so that the rotation thereof is fixed.

9 shows a part of the brake device fixed to the seat plate.

The brake device includes a brake frame (83) configured concentrically with the rotation axis of the seat plate; A brake case 84 fixed to the seat plate; And a brake pad coupled to the brake case and brought into close contact with the brake frame.

There are various ways to make it come into close contact with the brake frame and press it. 9 shows a configuration using a cam. In addition to the configuration using a cam as described above, there is also a method of advancing and retracting as a screw. However, the method of moving forward and backward as a screw can also be said to be the action of a cam only when it rotates within 180 degrees. Therefore, in the present invention, a cam includes a cam by a screw operating within 180 degrees.

The above cam may be brought into direct contact with the brake mold, or the cam may push the pad closely to the brake mold 83 to come in close contact with the brake mold.

In this example, the method of mediating the pad is considered to be more preferable, such that the contact area can be increased, and such a configuration is shown in FIG. 9.

Looking at the operation of Figure 9 is as follows.

When the brake pedal 82 is rotated, the brake pads 81 and 120 are brought close to each other by the cam 85 coupled to the brake pedal 82 and then contacted with the brake mold 83 located between the two brake pads 81 and 120, And the inclination of the seat is fixed.

The degree of adhesion of the brake pad to the brake pad for fixing may be controlled to adjust the degree of adhesion and the pressing force necessary for fixing by adjusting the unevenness, roughness, and material of the contact surfaces of the brake pad 83 and the brake pads 81 and 120. .

The above-described chair inclination adjusting device according to the present invention can be variously modified and embodied within the scope of the claims, the detailed description of the invention and the accompanying drawings, and is within the scope of the present invention.

1: back plate 2: support 15: seat plate
53: front elastic member 57: (human adjuster) handle 58: support
70: Adapter 73: Rear elastic member 76: Pressure regulator
76a: pressure adjuster 77: handle 78: bracket
79: rotary frame 79a: upper body
82: Brake base 83: Brake frame 84: Brake case
85: Cam 81, 120: Brake pad
90: seat plate supporting member 91: horizontal axis 92: chair structure
93: (fixed) support 94: height adjustment lever

Claims (12)

A seat panel tilt adjusting device capable of adjusting a tilt of a seat,
And a seat support member (90) having one end supported by a horizontal shaft member horizontally arranged in the left and right direction of the chair and the other end fixed to the seat lower portion; The seat can be inclined forward and backward with respect to the seat by means of the rotary shaft; It includes an elastic member that acts in response to the front tilt and rear tilt of the seat plate;
The elastic member acting in response to the rear tilt includes an elastic member independent of the front tilt; At least one of the elastic member that acts in response to the front tilt and the rear tilt is characterized in that the seat plate tilt control device using a torsional elasticity. A torsionally elastic member acting in response to the forward tilting of the seat plate; A seat plate tilt control device comprising a torsional elastic member that acts in response to the rear tilt of the seat plate. The apparatus of claim 1, further comprising an elastic member independently adjustable in elasticity and corresponding to a backward tilt. The apparatus of claim 1, wherein the elastic member includes a torsional elastic member using torsional elasticity and a stretchable elastic member using stretching elasticity. The seat recliner according to claim 1, characterized by comprising an elastic member independently adjustable in elasticity and corresponding to a forward tilt. Wherein one end of at least one torsion elastic member of the elastic member constituted by the elastic member is fixed to a support base and a pressure adjusting member is screwed into a screw hole opened in a rotation body coupled to the support base, Combined; And the resilient force of the elastic member fixed to the support base (58) can be adjusted by the rotation of the pressure adjusting base. The torsional elastic member according to claim 1, wherein the torsionally elastic member is a torsion coil spring; One end of the torsion coil spring is supported by a portion of the support 93; To form a screw hole in the support portion and screwed with the pressure regulator (76a), to adjust the elasticity of the torsion coil spring by pushing or slowing one end of the torsion coil spring by the forward and backward of the pressure regulator (76a) Slope adjustment device characterized in that. [4] The seat plate inclination of claim 4, further comprising an elastic elastic member for adjusting the elastic force of the elastic member by vertically moving the upper body 79a which is screwed with the pressure adjuster 76 and supports one end of the elastic member. Regulator. 2. The seat plate according to claim 1, wherein the rotating body 79 is rotatably coupled to at least one of the supporting members at both ends of the elastic member, and the through hole is formed in the rotating body, and the pressure plate 76 is coupled to the through hole. Slope adjustment device characterized in that it comprises an elastic member constituting a pressure adjuster 76 to enable a rotational movement in response to the rotation of the. The seat plate tilt adjusting device according to any one of claims 1 to 9, comprising a brake device for fixing the inclination of the seat plate. 11. The seat plate tilt adjusting device according to claim 10, wherein the brake device includes a cam which acts to bring the brake frame 83 into close contact. 11. The brake device according to claim 10, wherein the brake device comprises a brake frame (83) concentric with the axis of rotation of the seat plate; A brake case 84 fixed to the seat plate; And a brake pad which is coupled to the brake case and brought into close contact with the brake frame.

Images