KR101232984B1 - Tilting control system for chair - Google Patents

Abstract

PURPOSE: A tilting control system for a chair is provided to prevent the buttocks of a user from sliding forward on a chair when leaning on a seat back. CONSTITUTION: A tilting control system for a chair comprises a seat plate support member(90) which is supported by a horizontal shaft member and is fixed to the lower part of a seat plate, a front elastic member(53) which operates corresponding to the tilting of the front of the seat plate, and a rear elastic member(73) which operates corresponding to the tilting of the rear of the seat plate. The front elastic member and rear elastic member can independently control elastic force.

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.

Even when the chair occupant is inclined to rest and rests, the hips are not pushed from the seat plate and the pressure concentrated on the thighs is dispersed even when working forward while leaning forward. One end is supported and the other end includes a seat plate support member 90 fixed to the bottom of the seat plate; The horizontal plate member can be tilted to the front and back of the chair by the axis of rotation.

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

In particular, the elastic elastic member acting in response to the rear tilt includes an elastic 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 to correspond to the front tilt and rear tilt of the seat plate is configured to include in the front of the chair.

In addition, the chair user may vary the degree of elasticity of the elastic elastic member according to the body shape and weight. Therefore, it is preferable that the elastic elastic member can adjust the elastic force. In particular, since the rear tilting makes such a large difference in the structure of the human body, at least one of the elastic members constituting elasticity can independently adjust the elastic force and act in response to the rear tilting. Here, the elastic force adjustment is to adjust only the elastic force of the elastic member as described in the drawings of FIGS. Or thereby do not affect the tilt or the like. In other words, the independent control of the elastic force of the elastic elastic member corresponding to the rear tilting means that the elastic force control of the elastic elastic member does not change its tension state with the elastic elastic member or seat plate for tilting the other side. This means that only the elastic force can be adjusted.

In the configuration of the elastic member, the front tilt does not require a great elastic force for the application of the human body. Therefore, unlike the elastic elastic member corresponding to the rear tilt may not be a big problem without having to configure independently. However, it is also desirable that the elasticity can be adjusted.

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

At least one of the stretchable elastic members is configured to compress or slow down the stretchable elastic member by moving the upper body 79a screwed with the pressure controller 76 up and down to adjust the elastic force of the stretchable elastic member.

Brackets were formed in one way for supporting the rotating body 79 to be rotated to a supporting portion such as a fixed support 93 supporting at least one end of both ends of the elastic member, and formed The rotating body 79 is rotatably coupled to the bracket, and the through-hole is formed in the rotating body, and the pressure control 76 is coupled to the through-hole by adjusting the pressure to allow the rotational movement in response to the rotation of the seat plate. It may include an elastic elastic member constituting the base 76.

One end of the stretchable elastic member, here the upper end and the upper body 79a screwed with the pressure control unit 76 may rotate together with the upper body when turning the pressure control unit 76 to adjust the elastic force. In order to prevent this, one end is fixed to the upper body 79a and the other end may constitute a fixing link 79b rotatably coupled to the rotation shaft of the seat plate. In the middle of the fixed link can be refracted by placing the link portion, both sides of the link portion is slidably coupled to each other can cope with the angle change and the length change according to the rotation of the pressure adjuster 76.

It is preferable to include a brake device for fixing the inclination of the seat plate for each of the above-mentioned various elastic members and the construction method thereof.

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.

1 is a perspective view of a chair including a chair tilt control device that the tilt of the rotating seat is buffered, restored
2 is a left side view of the rear rotation of the chair
3 is a perspective view of a chair including a rotating body for guiding the pressure regulator of the chair
FIG. 4 is a perspective view from below of the right front of the chair of FIG.
FIG. 5 is a perspective view from below of the chair of FIG. 3; FIG.
6 is a perspective view directly connected to the elastic member without the front pressure regulator
7 is an exploded view of the brake device fixed to the lower plate
8] Before brake operation (left) and operation (right)

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 seat plate support member 90 is rotatably coupled to the horizontal shaft 91 so as to tilt 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, the elastic elastic member that resists the tilting of the seat plate is intervened.

The elastic member is to act in response to the front tilt; An elastic elastic member that is independent of the front tilt and acts in response to the rear tilt; At least one elastic member is configured in front of the chair.

One end of the elastic member is supported by a fixing member such as a fixing support 93 which is coupled to the chair structure and fixed relatively to the tilting of the seat plate; The other end is supported by the upper body 79a.

1 to 6 illustrate a flexible elastic member that resists or recovers fluctuations in the front tilt and rear tilt of the seat plate, and constitutes the stretch coil springs 53 and 73 as an example of the stretch elastic member.

The method using this elastic modulus can be used by the method of compression and the method of tensioning. Either way, they can be used interchangeably with design changes that pay little attention to the differences. In the present invention, the elastic elastic member resistant to the front tilt is configured in the front, the elastic elastic member resistant to the rear tilt is configured in the rear and showed an example of the elastic force by the compression method.

In the present application, the elastic member that resists the inclination of the seat plate refers to the elastic elastic member, and the elastic elastic spring is configured as one of the elastic elastic members. Thus, unless there is confusion, the front elastic elastic member is the front elastic member, and the rear elastic elastic member is the rear. As the elastic member, the elastic coil spring is referred to as the coil spring.

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 a difference between pressing or pulling the coil spring, and even if the configuration is reversed, an equivalent effect can be obtained.

In the present invention, the pressing method is an example of the pressing because the stability was better.

Now, the configuration and operation of the elastic member that corresponds to the forward rotation in Figures 1 to 5 will be described.

1 to 5, the lower end of the coil spring 53, which is the front elastic member 53 configured in front of the chair, is supported so as not to be separated from the chair front fixing support 93. The upper end is supported by the upper body 79a which is the upper support. The upper body 79a is screwed with the pressure regulating member 76. [

The lower portion of the pressure regulator 76 is passed through the long hole drilled in the fixed support 93 as shown in Figures 1 and 2, the handle 57 is coupled. Therefore, even if the restoring elastic force for restoring the coil spring 53 coupled to the support 58 is applied, the handle 57 is suppressed by being caught by the fixed support 93.

The coil spring 53, which is sandwiched between the upper body 79a and the fixed support 93 with the pressure adjusting unit 76 as the center, is adjusted in elasticity by adjusting the distance therebetween.

Coil springs formed in front of the chair can be configured as many as necessary, at least one configuration. 1 to 6 show an example in which one coil spring is configured.

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 forward rotation was formed slightly longer in consideration of the fact that the pressure adjusting unit 76 may not move concentrically with the seat rotation axis 91 when the seat plate rotates.

In addition, the pressure adjusting unit 76 is a long hole with a certain degree of clearance in the hole formed in the fixed support 93 formed in the chair structure 92, so that it can cope appropriately at the time of rotation of a seat plate. At this time, the elastic elastic member 53 is fixed so as not to be separated from the fixing support (93).

When the seat is turned forward;

The seat plate front adapter 70 presses the front pressure adjuster 76 and the pressure adjuster 76 is pushed freely through the lower hole drilled in the lower fixing support 93. At this time, the upper body 79a screwed with the pressure adjuster 76 is pressed down, and the coil spring coupled to support the upper body 79a is also pressed to elastically resist.

When the seat plate is inclined forward and presses the pressure adjuster 76, the pressure adjuster 76 is a long hole with a certain amount of play in the hole formed in the fixed support 93 formed in the chair structure 92, It is pressed against the rotation.

The rear elastic member 73 configured at the rear is independent of the front tilt and corresponds to the rear tilt, and when the seat plate rotates forward, the rear elastic member 73 is released from the rear adapter 70 so as not to affect the front turn. It is desirable to.

In addition, when the coil spring 53, which is the front elastic member 53, is mounted, even when the seat plate is horizontal, it is preferable to mount the coil spring in a state in which elastic force is latent to some extent from the beginning.

The elastic force control of the elastic member is formed in the front corresponding to the front tilt is as follows. This process is limited to the elastic member, and elasticity control is performed independently.

In order to further increase the elastic force of the coil spring 53, which is an elastic elastic member using the elastic elastic force, as the front elastic member 53 that resists forward rotation, the pressure adjusting member 76 is screwed into the pressure adjusting member 76. The upper body 79a is lowered to further compress the expansion and contraction coil spring. Then, the restoring pressure of the coil spring is increased, and the seat plate is rotated forward and resisted with a stronger force.

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, even if the upper body (79a) coupled to the pressure control unit 76 by turning the pressure control unit 76 is lowered or raised, the pressure control unit 76 is turned in place, so the pressure control unit (76) itself Does not move up or down. However, at this time, the upper body (79a) screwed to the pressure adjuster 76 is moved up and down due to the screw coupling, thereby pressing or releasing the elastic elastic member supported on one end to the upper body to thereby reduce the elastic force of the elastic member Will be adjusted.

When turning the handle 57 of the pressure regulator 76 in this example, the upper body 79a may also turn together due to friction. Therefore, when the upper body (79a) is turned to hold the handle 57 of the pressure adjuster 76 to hold it so that only the upper body (79a) to move up or down.

If it is inconvenient to hold the upper body (79a) does not turn, as shown in Figures 1 to 4, one end is fixed to the upper body (79a) for supporting one end of the elastic elastic member and the other end to the horizontal axis (91) which is the rotation axis of the seat plate It is also possible to configure the fixed link (79b) rotatably coupled to prevent the upper body (79a) to turn.

The fixed link (79b) has a link connection in the middle to enable the bending, and the portion fixed to the upper body (79a) and the portion coupled to the horizontal axis (91) to be freely rotated, elastically slidably coupled to rotate the seat Make sure that you respond well to

Alternatively, the upper body 79a may be prevented from rotating, but the process of moving the upper body 79a to adjust the initial elastic force is not a frequent process, and thus, the upper body 79a may be manually turned. Holding it is the simplest way.

3 to 5, one end of the front elastic elastic member, in this case, a bracket 78 is configured below the fixed support 93 supported by the lower end, and the rotating body 79 rotatable to the bracket 78 is rotated. Possibly combined. The rotating body 79 is formed with a through hole, the pressure adjusting unit 76 is coupled to the hole to slide freely through.

In such a configuration, when the pressure regulator does not form concentric with the seat plate rotating shaft 91, even when the pressure seat is rotated by the rotating seat plate, the pressure controller 76 can cope with the shanghai movement and rotational movement. 76 is a stable movement, according to the elastic elastic member guided to the pressure adjuster 76 is also a stable operation. Therefore, the accommodating part 70 in FIG. 1, FIG. 2 can also be comprised in a short shape like FIG.

The same configuration as the bracket 78, the rotating body 79 is supported by the upper end of the elastic elastic member instead of the support member (支持 材) such as the fixed support member 93 is supported by the lower end of the elastic elastic member The upper body 79a can be configured similarly. In this case, however, the coupling of the pressure regulator coupled to the through hole formed in the rotating body 79 is screwed instead of sliding to maintain the function of the upper body.

The process acting in the front rotation is equally applied to the expansion coil spring 73, the rear elastic member 73 using the elastic elasticity configured for the rear rotation. In other words,

Referring to the configuration and operation of the expansion coil spring 73 to resist the rear tilt is as follows.

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.

Here, the shape of the upper body 79a may be separately configured, or may be configured to jointly act on two coil springs by being connected to each other for a long time. In this example, an example has been shown in which it is separated and configured independently of each other.

Thus, the elastic force can be adjusted more smoothly by configuring a plurality of coil springs and individually adjusting each elastic force.

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. In this case, the elastic elastic member 73 is fixed to the lower portion so as not to be pushed or separated from the fixed support (93).

On the other hand, the configuration of the pressure adjuster 76 as described above, in the configuration of the front elastic member 53, as shown in Figures 3 to 5 constitute a bracket 78 to the fixed support 93, the bracket 78 By forming a through hole in the rotating body (79) to rotate in combination with the through and through the through hole to adjust the pressure adjuster 76 may be made to work more stably.

Rotating the seat backwards;

The rear adapter 70 is to press the pressure adjuster 76 and the pressure adjuster 76 is pressed down freely passing through the hole drilled in the lower fixed 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 elastic force control of the elastic member having a rear portion corresponding to the rear tilt is as follows. This process is limited to the elastic member, and elasticity control is performed independently.

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. However, at this time, the upper body (79a) screwed to the pressure adjuster 76 is moved up and down due to the screw coupling, thereby pressing or releasing the elastic elastic member supported on one end to the upper body to thereby reduce the elastic force of the elastic member Will be adjusted.

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 to hold the upper body (79a) not to turn, as shown in Figures 1 to 4, one end is fixed to the upper body (79a) and the other end fixed link (79b) on the horizontal axis (91) Can also be configured by inserting.

Alternatively, the two upper bodies 79a may be connected to each other to simply prevent turning. However, in order to be able to adjust the pressure of a plurality of coil springs 73 composed of a plurality, it is good to configure separately.

Alternatively, the upper body 79a may be prevented from rotating, but the process of moving the upper body 79a to adjust the initial elastic force is not a frequent process, and thus, the upper body 79a may be manually turned. Holding it is the simplest way.

Although the elastic coil spring 53 is illustrated as an example of the front elastic member 53 and the rear end member 73, an elastic block having elastic elasticity may be used.

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.

As shown in FIG. 2, as shown in FIG. 2, the seat plate 15 is rotated backward as an example of the operation of the elastic member that acts in response to the forward rotation and the rear rotation when the seat plate rotates forward or backward. In this case, the front elastic member acting in response to the forward rotation is released from the adapter 70 configured at the front, and when the seat plate is rotated forward, the elastic member configured in the rear acting in response to the rear rotation is released at the rear adapter 70. It does not affect 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 response to the forward rotation does not have a big problem even if it does not need to be configured independently because the required elastic force does not have to be large compared to the rear rotation elastic member. Therefore, when the seat plate rotates to the rear, the elastic member acting in response to the front rotation may be configured as shown in Figure 6 to be interlocked with the rear rotation elastic member.

However, it is preferable that the elastic member acting in response to the rear rotation during the forward rotation acts independently of the forward rotation.

On the other hand, in the present example it may be configured a plurality of elastic members to play the same role in the rear rotation or the forward rotation, but in this case composed of the elastic members of the same type of tension and compression, it is composed of a mixture of tension and compression or other than the coil spring It may be configured by mixing different types of elastic members such as elastic blocks.

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 6, the brake frame 83 is fixed to the fixed support 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 FIGS. 1 to 6, the brake frame 83 has a circular shape so as 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 plate, and the shape may be formed on the path of rotation and fixed to a fixed part of the chair that does not rotate relatively to the seat plate rotation, even if the edge is not a smooth circle. .

The fixing of the seat plate is such that the operating portion of the brake device configured in the seat plate to rotate back and forth to the brake frame 83 is in close contact with the brake frame, the rotation is fixed.

7 and 8 show a part of the brake device fixed to the seat plate.
Here, the brake stand 82 is shown cut off near the cam 85 so as not to block the configuration. In FIG. 8, arrows are added to clarify the change in the left and right pictures.

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. 7 and 8 show 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, it is considered that the method of mediating the pad is more preferable, such as to increase the contact area, and such a configuration is shown in FIGS. 7 and 8.

Referring to the operation of Figures 7 and 8 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. That is, the brake device includes a cam which performs a brake action by bringing the brake device into close contact with the brake frame 83, which is a fixed part, without being rotated with respect to the rotation of the seat plate.

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: rotating frame 79a: upper body 79b: fixed link
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: Fixing support 94: Height adjustment lever

Claims (9)

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; An elastic elastic member acting in response to the front tilt of the seat plate; It includes an elastic elastic member that acts in response to the rear tilt of the seat plate; The elastic elastic member corresponding to the rear tilt includes an elastic elastic member that can independently adjust the elastic force; The brake device for fixing the rotation of the seat plate is characterized in that it comprises a cam acting on the brake frame (83) which is a relatively fixed portion with respect to the rotation of the seat plate. delete delete The elastic force of the elastic elastic member according to claim 1, wherein at least one elastic elastic member of the constructed elastic elastic member is moved up and down by screwing up and down the upper body 79a supporting one end of the elastic elastic member. Seat tilt control device, characterized in that for adjusting the. delete delete delete delete The brake device according to claim 1 or 4, further comprising: a brake case (84) fixed to the seat; And a brake pad which is coupled to the brake case and brought into close contact with the brake frame.

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