KR101791106B1 - Assembly and chair with the same - Google Patents

Abstract

A chair assembly comprising: a body formed in a substantially hexahedron shape having an opened top face; a body coupled to an upper end of a cylinder provided at an upper end of a leg portion of the chair, the body being rotatable in a vertical direction, A first adjusting lever portion provided on one side of the connecting portion and adjusting the height of the seat portion, a second adjusting lever portion provided on one side of the body and locking or releasing movement of the slide panel in the front- And a third adjusting lever portion for locking or releasing a tilting operation for adjusting the inclination of the backrest and the seat portion, wherein a fixing shaft is provided along the front and rear direction at a central portion of the body, and a tilting motion The body and the slide panel are provided with an elastic member for providing tensile force acting on the body, The position and the height of the seat portion and the inclination of the seat portion and the back can be adjusted by adjusting the inclination angle of the seat portion according to the body weight of the user to adjust the tension acting on the elastic member, By adjusting the tension of the elastic member by changing the inclination angle of the part, the user can easily tilt the operation.

Description

[0001] ASSEMBLY AND CHAIR WITH THE SAME [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembly for a chair and a chair having the same, and more particularly to a chair assembly having a height of a seat portion and a function of adjusting a tilt and a tension of a back portion, will be.

Generally, the chair includes a seat, a leg, and a backrest.

At the same time, the chair can be equipped with a headrest supporting the head and an armrest supporting the arm comfortably.

In recent years, chairs capable of adjusting the position and height of the seat in the front-rear direction or the angle of the backrest have been developed depending on the user's body shape and work environment.

For example, the following patent documents 1 and 2 disclose a chair assembly configuration.

The following Patent Document 1 discloses a tilting device that is provided in upper and lower cases to raise and lower a chair assembly, a tilting means that adjusts the inclination of the back plate, a tilting limiting means that restricts the degree of inclination of the back plate to multiple stages, A locking lever provided on both sides of the case, a limit lever provided at the tip of the case for multi-tilting, and an elasticity adjusting lever provided on the lifting lever, The structure of the chair assembly is disclosed.

Patent Document 2 discloses a tilting restricting portion for setting a free tilting angle of a back plate, a multi-stage locking portion for fixing the tilting state of the back plate, an elasticity adjusting portion for adjusting the tilting strength of the back plate, a seat plate tilting portion for tilting the seat back forward, And a lift controller for adjusting the height of the chair assembly.

Korean Patent Registration No. 10-0791454 (Announcement on January 3, 2008) Korean Patent Registration No. 10-1028731 (issued on April 14, 2011)

However, the chair assemblies described in Patent Document 1 and Patent Document 2 have a complicated structure in order to provide various functions such as a backboard tilting function for adjusting the inclination of the backboard and a leftboard tilting function for adjusting the inclination of the backboard.

As a result, the workability of the chair assembly is reduced during the manufacturing process, and the human, economic, and time costs required for the manufacturing process are increased.

Also, the chair assembly according to the related art has a problem in that it is inconvenient for a user to adjust the tension manually by operating the adjusting spring in the tilting operation for adjusting the inclination of the back plate and the seat.

Further, since the chair assembly according to the prior art always provides a constant tension, it is required to develop a chair assembly technique in which the tension acting in the tilting operation is controlled according to the body shape of the user, in particular, the weight of the user.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a chair assembly capable of adjusting the position and height of the seat portion in the front and rear direction, the inclination of the seat portion and the backrest depending on the body shape and the working environment of the user, .

Another object of the present invention is to provide an assembly for a chair in which the tension acting on the weight of the user in accordance with the weight of the user during the tilt adjustment operation of the seat portion and the backrest is adjusted, and a chair having the same.

Another object of the present invention is to provide an assembly for a chair capable of adjusting and locking the seat back and forth, adjusting the height, and adjusting and locking the inclination of the seat and the backrest, and a chair having the same.

In order to achieve the above object, a chair assembly according to the present invention includes: a body formed in a substantially hexahedron shape having an opened upper surface; a body coupled to an upper end of a cylinder provided at an upper end of a leg portion of the chair, A first adjusting lever part provided at one side of the connecting part to adjust the height of the seat part, and a second adjusting lever part provided at one side of the body, And a third adjusting lever portion for locking or releasing a tilting operation for adjusting the inclination of the backrest and the seat portion, wherein a fixing shaft is provided along a front-rear direction at a central portion of the body, Wherein an elastic member is provided on an outer circumferential surface of the fixed shaft to provide a tension acting in a tilting operation, And the slide panel adjusts the tension acting on the elastic member by changing the inclination angle according to the weight of the user.

In order to achieve the above object, a chair having an assembly for a chair according to the present invention includes an assembly for a chair, the position and the height of the seat portion are adjusted by using the chair assembly, And adjusts the tilting angle of the backrest and the backrest so as to adjust the tension acting on the elastic member based on the weight of the user.

As described above, according to the chair assembly and the chair provided therewith, the position and the height of the seat portion in the front-rear direction and the inclination of the seat portion and the back portion can be adjusted.

According to the present invention, the tension of the elastic member is adjusted by changing the inclination angle of the seat portion according to the weight of the user, so that the user can easily perform the tilting operation.

Accordingly, according to the present invention, it is possible to adjust the front-rear direction position and height of the seat portion, the tilting angle of the backrest, and the tension of the elastic member according to the user's body shape or work environment by using the chair assembly, Is obtained.

1 is a side view of a chair having an assembly for a chair according to a preferred embodiment of the present invention;
2 is a partial enlarged view of a seat assembly and a seat portion and a back portion according to a preferred embodiment of the present invention;
Fig. 3 is a bottom view of the seat portion shown in Fig. 2,
Figure 4 is a bottom view of the assembly shown in Figure 2,
Figure 5 is a top view of the assembly shown in Figure 2,
FIGS. 6 and 7 illustrate an operation state of the body and the first and second housings when rotating,
8 is an exploded perspective view of the second control lever portion shown in Fig. 5,
Fig. 9 is an exploded perspective view of the third control lever portion shown in Fig. 5,
10 is an exemplary view for explaining a method of operating the locking portion and the first engaging portion,
Fig. 11 is an enlarged view of a portion A shown in Fig. 10; Fig.

Hereinafter, a chair assembly according to a preferred embodiment of the present invention and a chair having the same will be described in detail with reference to the accompanying drawings.

In the present specification, the direction in which the backrest is installed around the seat portion is referred to as the rear of the chair, and the opposite direction is referred to as the front of the chair.

And terms indicating directions such as 'left', 'right', 'upward' and 'downward' are defined to indicate respective directions with respect to the front and rear directions.

1 is a side view of a chair having an assembly for a chair according to a preferred embodiment of the present invention.

As shown in FIG. 1, a chair having a chair assembly according to a preferred embodiment of the present invention includes a seat portion 11 on which a user sits, a leg portion 12 provided on a lower portion of the seat portion and to which a plurality of wheels are attached A backrest 13 which is connected to the rear side of the seat portion 11 and a seat portion 11 which is provided under the seat portion 11 and adjusts the height of the seat portion 11 and the forward and backward positions thereof and controls the seat portion 11 and the backrest 13 And a chair assembly 14 that adjusts the tilting angle and intensity in the tilting operation and locks or releases the tilting operation and the forward and backward movement operation.

An armrest supporting the user's arm is mounted on both sides of the seat portion 11 or the backrest 13 and a headrest supporting the head of the user can be mounted on the upper portion of the backrest 13. [

A cylinder 15 may be installed on the upper portion of the leg portion 12 to adjust the height of the seat portion 11.

The configuration of the assembly will be described in detail with reference to FIGS. 2 to 5. FIG.

FIG. 2 is a partially enlarged view of a seat assembly and a seat portion and a back portion according to a preferred embodiment of the present invention, FIG. 3 is a bottom view of the seat portion shown in FIG. 2, and FIGS. Bottom and top view of the assembled assembly.

2 to 5, a chair assembly 14 according to a preferred embodiment of the present invention includes a body 20 formed in a substantially hexahedron shape having an opened upper surface, a cylinder 20 provided at an upper end of the leg portion 12, (30) coupled to the upper end of the body (15) and axially coupled to the body (20) by a rotary shaft (31) so that the body (20) can rotate in the vertical direction, A second adjustment lever portion 40 which is provided at one side of the body 20 and which locks or releases the forward and backward movement of the slide panel 16 provided at the seat portion 11, And a third adjusting lever portion 60 for locking or releasing the tilting operation of the lever portion 50 and the backrest 13 and the seat portion 11 (hereinafter, referred to as 'tilting operation').

In addition, the chair assembly 14 according to the preferred embodiment of the present invention may further include a locking portion 70 for locking or unlocking the tilting operation by the operation of the third control lever portion 60.

Second and third control lever portions 50 and 60 are provided on both sides of the upper surface of the body 20 and a locking portion 70 may be provided at a rear end of the upper surface of the body 20.

The body 20 may be rotatably coupled to the connection portion 30 by a rotary shaft 31 installed across the lower surface of the body 20 in the lateral direction.

To this end, the connection unit 30 includes first and second bridges 32 and 33, which are installed in a substantially 'V' shape when viewed from the front, and first and second bridges 32 and 33, And a third bridge 34 that couples the first bridge 34 and the second bridge 34 to each other.

The upper ends of the first and second bridges 32 and 33 are connected to the body 20 by the rotary shaft 31 in a state where the upper ends of the first and second bridges 32 and 33 are disposed on both sides of the second housing 24 provided below the body 20, As shown in Fig.

Accordingly, in the present invention, the tilting operation of the seat and the backrest coupled to the body and the connecting portion can be adjusted by rotating the body in the vertical direction.

The upper ends of the first and second bridges 32 and 33 are respectively provided with a pair of first insertion holes 161 formed in the slide panel 16 of the seat portion 11 to pass through the body 20 The first engaging portion 36 may be coupled to the first engaging portion 36. [

To this end, a pair of through-holes 201 may be formed in the front end of the body 20, through which a pair of first engaging portions 36 are respectively inserted.

The pair of through holes 201 are formed so that the body 20 is coupled to the pair of first engaging portions 36 so as to move in the vertical direction and to slide back and forth along the upper surface of the first housing 23 And may be formed into a long hole shape.

The configuration of the first engagement portion 36 will be described in detail below with reference to FIGS. 5 and 8, together with the configuration of the locking portion 70. FIG.

The third bridge 34 may be axially coupled to the lower end of the backrest 13 by a first shaft 35.

The rear end of the body 20 may be axially coupled to the lower end of the backrest 13 by a second shaft 17 provided on the upper portion of the first shaft 35.

To this end, a pair of first and second mounting arms 18, 19 may be provided at the lower end of the backrest 13, with a first shaft 35 and a second shaft 17, respectively.

The pair of first and second mounting arms 18 and 19 can be extended forward at intervals corresponding to the lengths of the first and second shafts 35 and 17, respectively.

The lower ends of the backrests 13 on which the first and second mounting arms 18 and 19 are formed are adjusted such that the distance between the first and second shafts 35 and 17 is adjusted during the rotation operation of the body 20. [ , A material such as a synthetic resin or metal that is deformable using elasticity is preferable.

The first and second mounting arms 18 and 19 may be provided with bent portions formed with one or more wrinkles to increase the elastic force.

A fixing shaft 21 is provided along the front and rear direction at the center of the body 20 and an elastic member 22 is provided on the outer circumferential surface of the fixing shaft 21 to provide a tensile force acting during a tilting operation.

4, a first housing 23 having a space in which a fixing shaft 21 and an elastic member 22 are installed, and a rotary shaft 31 disposed inside the first housing 23, And a second housing 24 disposed along the left and right direction so as to intersect with the first housing 23 can be coupled.

The first housing 23 and the second housing 24 are each formed into a substantially semicircular shape in section and the first housing 23 is rotatably supported by the second housing 24 by the upward and downward rotation of the body 20, And the rotary shaft 31 as a center.

Here, the body 20 can be slidably coupled along the upper surface of the first housing 23 in the forward and backward directions during the rotation operation of the body 20 and the first housing 23.

A pair of guide blocks 202 and a fixing block 203 for fixing the rear end of the elastic member 22 are formed on the lower surface of the body 20 on both sides of the rear end of the first housing 23 .

The pair of guide blocks 202 can guide the body 20 to move in the forward and backward directions around the first housing 23 without shaking by the rotational movement of the body 20. [

The front end of the elastic member 22 is coupled to the first housing 23 and the rear end of the elastic member 22 is fixedly coupled to the fixed block 203 formed on the body 20.

When the rear end of the body 20 rotates upward or downward due to the weight or force of the user applied to the seat portion 11 and the backrest 13, the first housing 23 is moved to the second housing 24 It is possible to rotate around the installed rotary shaft 31.

At this time, the body 20 and the first housing 23 are rotated about the first engaging part 36 and the rotary shaft 31, respectively, and then, between the front end of the first housing 23 and the fixed block 203 The elastic member 22 to be installed can be elastically deformed so as to increase or decrease in length according to the rotating direction of the body 20. [

For example, FIGS. 6 and 7 illustrate operation states of the body and the first and second housings when rotating.

FIG. 6 shows a state in which the rear end of the body 20 is rotated downward, and FIG. 7 shows a state in which the rear end of the body 20 is rotated upward.

Before the user is seated, the seat portion 11 and the body 20 are in a state in which they are horizontally positioned or slightly rearward as shown in Fig. 7 due to the tension of the elastic member 22.

6, when the body 20 and the rear end of the first housing 23 are rotated downward, the front end of the body 20 is formed at the upper ends of the first and second bridges 32 and 33 And the rear end portion is rotated downward in a state of being coupled to the pair of engaging portions 36. [

When the rear end of the body 20 rotates downward, the fixed block 203 formed on the lower surface of the body 20 is slid forward as compared with the state where the rear end of the body 20 is rotated upward .

Therefore, since the front end and the rear end of the elastic member 22 are coupled to the front end of the first housing 23 and the fixing block 203, respectively, the elastic member 22 can be elastically deformed so that the length l decreases.

7, when the rear end of the first housing 23 rotates upward, the fixed block 203 slides rearward relative to the state in which the rear end of the body 20 is rotated downward, As shown in FIG.

So that the elastic member 22 can be elastically deformed so that the length L increases (L > 1).

As described above, according to the present invention, the tension applied to the backrest and the seat portion by the elastic member can be adjusted by adjusting the inclination angle by rotating the seat portion and the body according to the weight of the user.

On the other hand, the seat portion 11 includes a slide panel 16 slidably mounted on the upper surface of the assembly 14, a cushion installed on the upper portion of the slide panel 16, And may include a cover for covering.

As shown in FIGS. 3 and 5, a lower surface of the slide panel 16 is provided with a first insertion hole (not shown) in which a pair of first engaging portions 36 provided on upper surfaces of both front ends of the connecting portion 30 are inserted And a second insertion hole 162 into which a pair of second engaging portions 25 provided on the upper surface of the rear end of the body 20 are inserted.

The first and second insertion holes 161 and 162 include an insertion portion formed in a shape corresponding to an end surface of the first and second engagement portions 36 and 25 and an extension portion communicating with the insertion portion and extending rearward can do.

Here, each extending portion may be formed to have a width narrower than the width of the first and second engaging portions 36 and 25 so as to prevent the first and second engaging portions 36 and 25 from being separated from each other.

A plurality of adjustment protrusions 163 for locking the sliding movement of the slide panel 16 in a state where the slide panel 16 is moved in the forward and backward directions according to the operation of the second adjustment lever part 50, Can be formed.

The plurality of adjustment protrusions 163 may protrude toward the second adjustment lever portion 50 at predetermined intervals along the forward and backward directions.

At the rear end of the slide panel 16, a latching piece 164 may be formed to prevent the body 20 from being separated when the body 20 is engaged.

The engaging pieces 164 may be disposed between a pair of slits formed at regular intervals, and a stopping protrusion may be formed on a rear lower end of the engaging piece 164 to hook the rear end of the body 20. [

The first control lever portion 40 includes a first control lever 41 and a first control lever 41 that are installed on one side of the connection portion 30 toward the outside of the body 20 so as to be rotatable in the vertical direction, (Not shown).

The support shaft 42 protrudes upward from the third bridge 34 of the connection portion 30 and the inner end of the first control lever 41 is in contact with the opening and closing pin provided at the upper end of the cylinder 15 .

Therefore, when the user rotates the outer end of the first control lever 41 upward, the inner end of the first control lever 41 descends and presses the opening / closing pin.

As a result, the cylinder 15 is released from the closed state and the height of the cylinder 15 can be adjusted.

On the other hand, when the user releases the rotation of the first control lever 41, the inner end of the first control lever 41 is raised, and the height of the seat portion 11 is fixed as the cylinder 15 is closed .

Next, the configuration of the second adjusting lever portion will be described in detail with reference to Figs. 5 and 8. Fig.

8 is an exploded perspective view of the second control lever portion shown in FIG.

5 and 8, the second control lever portion 50 includes a second control lever 51 that is installed to be movable in the body 20 inward and outward, that is, in the left and right direction, A fixing protrusion 52 protruding from an inner end of the lever 51 and sequentially coupled to a space between the plurality of adjusting protrusions 163 formed on the slide panel 16 to prevent the slide panel 16 from moving, And may include a first spring 53 that provides a restoring force so that the projection 52 remains engaged with the space between the pair of adjustment projections 163. [

The second control lever 51 is formed in a rectangular parallelepiped shape having a substantially rectangular cross section and a bottom surface and the handle at the outer end of the second control lever 51 can be bent downward so that a user can easily operate the control lever 51 .

A contact protrusion 54 which is in contact with an inner end of the first spring 53 may be formed on the inner bottom surface of the second control lever 51.

The first spring 53 may be installed on a mounting rib 26 formed in a substantially rectangular box shape having an inner wall opened on an upper surface of the body 20.

8, the left end is supported on the outer wall of the mounting rib 26, and the other end of the first spring 53, the right end as viewed in FIG. 8, And the contact protruding portion 54 of the contact portion 51.

The second adjusting lever 54 is normally moved to the inside of the body 20 by the restoring force of the first spring 53 and the fixing protrusion 52 is moved toward the inside of the body 20 So that the position of the slide panel 16 can be fixed.

On the other hand, when the user pulls the second adjusting lever 51 outward, the second adjusting lever 51 moves outward while elastically deforming so as to decrease the length of the first spring 53, And the adjustment projection 163 is released, the slide panel 16 can freely move in the forward and backward directions.

When the user removes the operation force applied to the second control lever 51, the second control lever 51 moves to the inside of the body 20 by the restoring force of the first spring 53, and the fixing protrusion 52 And the position of the slide panel 16 can be fixed by being coupled between a pair of adjacent ones of the plurality of adjustment projections 163. [

Of course, the fixing projections 52 may be formed in a plurality of, as shown in FIG. 5, so that the fixing projections 52 can be coupled to a plurality of spaces between the adjacent adjustment projections 163.

8, a limiting rib 55 for restricting the movement distance of the second control lever 51 is elongated in a substantially rectangular shape along the left and right direction, And a locking protrusion 27 inserted into the limiting rib 55 may be formed on the outer side of the mounting rib 26 of the body 20.

Accordingly, the movement distance of the second control lever 51 can be limited by the movement distance of the limiting rib 55 inserted into the engagement protrusion 27. [

Next, the configuration of the third adjusting lever portion will be described in detail with reference to Figs. 5 and 9. Fig.

9 is an exploded perspective view of the third control lever portion shown in Fig.

As shown in FIGS. 5 and 9, the third control lever portion 60 includes a third control lever 61 that is installed to be movable inward and outward, that is, in the left-right direction, to the body 20, A transmitting member 62 for transmitting the force resulting from the movement of the lever 61 to the transmission link 71 of the locking unit 70 to be described below, a fixing member 63 for fixing the position of the third control lever 61 And a second spring 64 for providing a restoring force to the fixing piece 63. [

The third control lever 61 is formed in a rectangular parallelepiped shape having a substantially rectangular cross section and a bottom surface and the handle at the outer end of the third control lever 61 can be bent downward so that the user can easily operate the third control lever 61 .

The front end of the third control lever 61 may be formed with one end of the transmitting member 62, and a supporting protrusion that supports the left end as viewed in Fig.

The transmitting member 62 is provided as a spring member to transmit the force by which the third adjusting lever 61 is moved by using the elasticity and the other end of the transmitting member 62, May be combined.

The fixing piece 63 functions to fix the third adjusting lever 61 at a position where the third adjusting lever 61 is moved inward or outward of the body 20.

The guide jaw 28 is formed on the upper surface of the body 20 and the guide jaw 28 is formed on the lower surface of the fixing piece 63 in the process of moving the fixing piece 63 in the left- A fixed block having a substantially pentagonal shape may be formed so as to be fixed to the moved position.

The second spring 64 is installed in the installation space formed along the forward and backward direction with respect to the third control lever 61 and the fixing piece 63 coupled to the rear end of the second spring 64 is provided The position of the third control lever 61 can be fixed in accordance with the engagement with the left or right side of the guide step 28 by moving backward by receiving the elastic force.

Of course, when the user manipulates the third adjusting lever 61 to move inward or outward by applying a force larger than the elastic force of the second spring 64, And the position of the third operation lever 61 is fixed after moving to the inside or the outside.

On the other hand, as shown in Fig. 9, a moving groove 65 for limiting the moving distance of the third adjusting lever 61 in the outward direction is formed in an upper portion of the inner bottom portion of the third adjusting lever 61, A separation preventing jaw 66 for preventing separation of the third control lever 61 coupled to the body 20 can be formed on the outside of the groove 65 to protrude downward.

An insertion protrusion 29 inserted into the movement groove 65 may be formed on the upper surface of the body 20 so as to protrude upward.

The movement distance of the third control lever 61 can be limited to the width of the movement groove 65 into which the insertion projection 29 is inserted.

Next, the configurations of the locking portion and the first engaging portion will be described in detail with reference to Figs. 5, 10, and 11. Fig.

Fig. 10 is an exemplary view for explaining a method of operating the locking portion and the first engaging portion, and Fig. 11 is an enlarged view of the portion A shown in Fig.

11 shows a state in which the supporting protrusion 74 of the locking member 73 is in contact with the step 37 of the first engaging part 36 As shown in FIG.

As shown in FIGS. 5 and 10, the locking portion 70 includes a transmission link 71 that rotates about the third axis 72 in accordance with the direction of the force transmitted from the third control lever 61, And a locking member 73 which moves in the lateral direction by the rotational operation of the transmission link 71 to lock or unlock the tilting operation.

The third shaft 72 is vertically installed on the upper surface of the body 20 and the transmission link 71 can be rotated around the third shaft 71.

The locking member 73 moves in the lateral direction according to the rotation operation of the transmission link 71 and locks or releases the rotating operation of the first engaging part 36 to rotate the body 20 in the vertical direction, To lock or unlock.

10 and 11, the first engaging portions 36 are protruded from the upper ends of the first and second bridges 32 and 33 of the connecting portion 30 along the vertical direction .

A flange portion 37 is formed at the upper end of the first coupling portion 36 in a shape corresponding to the insertion portion of the first insertion hole 161. A central portion of the first coupling portion 36 is connected to the first insertion hole 161, A width corresponding to the width of the extension of the protrusion 161 can be formed.

Thus, in a state in which the first engaging portion 36 is inserted into the first inserting hole 161 through the inserting portion, the center portion of the first engaging portion 36 is formed to have a width corresponding to the width of the extending portion of the slide panel 16 It is possible to smoothly move in the longitudinal direction.

The first engaging portion 36 is installed vertically on the upper ends of the first and second bridges 32 and 33 and the flange portion 37 is installed horizontally on the upper end of the first engaging portion 36 do.

Therefore, the body 20 is disposed in a horizontal state when the first engaging portion 36 and the slide panel 16 are engaged.

However, when the load of the user who is seated on the seat portion 11 is applied, or when the user applies a force to the seat portion 11, as the rear end portion of the body 20 rotates downward, Is disposed obliquely to the flange portion (37) of the portion (36).

Therefore, in the rotating state of the body 20, as the frictional force between the flange portion 37 and the slide panel 16 increases, the forward and backward movement of the slide panel 16 can be restricted.

In a state in which the locking member 73 is moved in the right direction as shown in Fig. 5, the body 20 can be rotated smoothly along the vertical direction.

On the other hand, when the locking member 73 moves to the left side and is disposed at the front end of the first engaging portion 36 as shown in Figs. 10 and 11, the rotational motion of the body 20 is restricted.

To this end, the locking member 73 is formed in a substantially rectangular plate shape, and a pair of supporting protrusions 74 may be formed at both ends of the locking member 73 toward the respective first engaging portions 36.

In addition, a step may be formed at the lower end of the front surface of the first engaging part 36, at which the supporting protrusions 74 are disposed.

As described above, according to the present invention, the tilting operation of the seat portion and the backrest can be locked or released by moving the locking member in the left-right direction in accordance with the movement of the third control lever portion.

Next, a method of operating a chair assembly and a chair having the same according to a preferred embodiment of the present invention will be described in detail.

First, a method of adjusting the seat height of a chair will be described.

When the user pulls the outer end of the first control lever 41 upward, the first control lever 41 rotates around the support shaft 42 and the inner end of the first control lever 41 So that the opening / closing pin provided at the upper end of the cylinder 15 is pressed downward.

As a result, the closed state of the cylinder 15 is released and the height of the cylinder 15 can be adjusted.

On the other hand, when the user releases the pulling operation of the first control lever 41, the inner end of the first control lever 41 rotates upward, and the cylinder 15 is closed and the expansion and contraction state is fixed.

Next, a method of adjusting the front-rear direction position of the seat portion will be described.

The second control lever 51 is normally moved to the inside of the body 20 by the elastic force of the first spring 52.

The fixing protrusion 52 formed on the inner end of the second control lever 51 is coupled to the space between the pair of adjacent adjustment protrusions 163 among the plurality of adjustment protrusions 163 formed on the slide panel 16. [

Thus, the slide panel 16, to which the fixing protrusions 52 and the adjustment protrusions 163 are coupled, is locked so as not to be movable forward and backward.

If the second control lever 51 is pulled outward in a state where the user is seated in the seat 11, the fixing protrusion 52 and the adjusting protrusion 163 Is released, the sliding state of the sliding panel 16 is released.

When the user moves the seat portion 11 forward or backward, the slide panel 16 is rotated in a state where the first and second engagement portions 36 and 25 are inserted into the first and second insertion holes 161 and 162 It is possible to move forward or backward along the upper surface of the body 20.

On the other hand, when the user releases the pulling operation of the second control lever 51, the first control lever 51 moves to the inside of the body 20 by the restoring force of the first spring 52, And the adjustment projection 163 are coupled to each other, the forward and backward movement function of the seat portion 11 is locked.

As described above, according to the present invention, the locking state of the slide panel is released through the pulling operation of the second control lever, so that the seat portion can be moved in the forward and backward directions to adjust the forward and backward positions of the seat portion according to the user's body shape and work environment.

According to the present invention, by releasing the pulling operation of the second control lever, the second control lever can be moved to the inside of the body, and the fixing protrusion and the adjustment projection can be returned to the locked state.

Next, a tilting operation method for adjusting the inclination of the seat portion and the backrest will be described.

When the user pushes the third control lever 61 inwardly of the body 20 while the user is seated in the seat portion 11, the transmitting member 62 moves the force of the third control lever 61 to move To the transmission link (71) of the locking portion (70).

Thus, as shown in Fig. 5, the transmission link 71 rotates counterclockwise about the third axis 72, and the locking member 73 connected to the transmission link 71 moves in the right direction .

At this time, as the supporting protrusion 74 of the locking member 73 is separated from the step 74 formed at the lower end of the front surface of the first engaging part 35 and moved to the right, the tilting operation locking state of the body 20 is released do.

Then, the body 20 is in a state in which the body 20 can rotate in the vertical direction and can be tilted.

The seat portion 11 and the backrest 13 coupled to the body 20 and the body 20 are tilted and rotated in the vertical direction by the force applied by the user to the backrest 13 .

The distance between the first shaft 35 and the second shaft 17 coupled to the lower end of the backrest 13 and to the body 20 and the connecting portion 30 is determined by the distance between the first and second mounting arms 34, (18, 19) and the lower end of the backrest (13) are resiliently deformed and can come close to or away from each other.

Particularly, the seat portion 11 is arranged in a horizontal state when not in use, and when the user is seated and applied to the user's body weight, the seat portion 11 rotates downward about the rotational axis according to the body weight.

Therefore, according to the present invention, the inclination angle is adjusted while rotating the seat portion according to the weight of the user, and the elastic member is elastically deformed according to the inclination angle of the seat portion and the body, thereby controlling the tension.

For example, as the weight of the user is larger, the inclination angle of the seat portion becomes larger, so that the tension acting on the elastic member becomes larger.

As a result, the light weight user feels that the tension of the elastic member is small in the tilting operation, and the user who is relatively heavy in weight tends to feel the tension of the elastic member in the tilting operation.

As described above, the present invention can easily tilt the user by adjusting the tension of the elastic member by changing the inclination angle of the seat portion according to the weight of the user.

On the other hand, when the user pushes the third control lever 61 in the outward direction of the body 20 while the user is seated in the seat portion 11, the transmitting member 62 moves the third control lever 61 And transmits the force to the transmission link 71 of the locking portion 70.

Thus, as shown in Fig. 10, the transmission link 71 rotates clockwise about the third axis 72, and the locking member 73 connected to the transmission link 71 moves in the left direction.

At this time, since the support protrusion 74 of the locking member 73 moves to the left and is coupled to the step 38 formed at the lower end of the front surface of the first engaging part 36, the locking state for the tilting operation of the body 20 .

Accordingly, the body 20 is in a state in which the tilting operation in which the body 20 is rotated along the vertical direction is impossible.

As described above, according to the present invention, the tilting operation of the seat portion and the backrest can be locked or released by moving the locking member in the left-right direction in accordance with the movement of the third control lever portion.

Through the above-described process, the seat assembly can be used to adjust the forward and backward positions of the seat portion, the height, and the tilting angle of the seat portion and the backrest.

Although the invention made by the present inventors has been described concretely with the above embodiments, the present invention is not limited to the above embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair technology for adjusting the tension of an elastic member by adjusting a position and a height of a seat portion in a front-rear direction and a tilting angle of a seat portion and a backrest using a chair assembly, .

10: Chair 11: Seat
12: leg portion 13: backrest
14: Multifunctional assembly 15: Cylinder
16: slide panel 161, 162: first and second insertion holes
163: Adjusting projection 164:
17: second shaft 18,19: first and second mounting arms
20: Body 201: Through-hole
202: guide block 203: fixed block
21: fixed shaft 22: elastic member
23: first housing 24: second housing
25: second coupling portion 26: installation rib
27: stopper 28: guide chin
29: insertion projection 30: connection
31: rotary shaft 32 to 34: first to third bridge
35: first shaft 36: first coupling portion
37: flange portion 38:
40: first adjustment lever part 41: first adjustment lever
42: support shaft 50: second adjustment lever part
51: second control lever 52: fixing projection
53: first spring 54: contact projection
55: limiting rib 60: third adjusting lever part
61: third control lever 62: transmitting member
63: Fixing piece 64: Second spring
65: moving groove 66:
70: locking portion 71: transmission link
72: third axis 73: locking member
74:

Claims (9)

A body formed in a hexahedron shape whose upper surface is opened,
A connecting portion coupled to an upper end of a cylinder provided at an upper end of a leg portion of the chair and axially coupled to the body by a rotating shaft so that the body can rotate in a vertical direction,
A first adjusting lever part installed at one side of the connecting part and adjusting the height of the seat part,
A second adjusting lever part which is installed at one side of the body and locks or releases the forward and backward movement of the slide panel provided at the seat part,
And a third adjusting lever portion for locking or releasing a tilting operation for adjusting the inclination of the backrest and the seat portion,
A fixed shaft is disposed at a central portion of the body along a longitudinal direction,
Wherein an elastic member is provided on an outer circumferential surface of the fixed shaft to provide a tension acting in a tilting operation,
The body and the slide panel adjust the tension acting on the elastic member by changing the inclination angle according to the weight of the user,
The connecting portion includes first and second bridges installed in a 'V' shape,
And a third bridge installed in a horizontal direction and connecting the first and second bridge lower ends,
The upper ends of the first and second bridges are axially coupled to the body by the rotary shaft in a state where the upper ends of the first and second bridges are disposed on both sides of the second housing formed on the lower surface of the body,
And a pair of first engaging portions formed at the upper ends of the first and second bridges, respectively, which are respectively coupled to the pair of first insertion holes formed in the slide panel through the body,
The third bridge is axially coupled by a lower end of the backrest with a first axis,
A rear end of the body is axially coupled to a lower end of the back by a second shaft provided on an upper portion of the first shaft,
A pair of first and second mounting arms provided with the first shaft and the second shaft are provided at a lower end of the back,
Wherein the pair of first and second mounting arms extend forwardly at intervals corresponding to the lengths of the first and second shafts, respectively,
Wherein a lower end portion of the backrest on which the first and second mounting arms are formed is made of a material of an elastically deformable material so that a distance between the first and second shafts is adjusted in a rotating operation of the body,
Wherein the first and second mounting arms are provided with bent portions formed with at least one wrinkle to increase the elastic force, respectively. delete The method according to claim 1,
Wherein a first insertion hole is formed on a lower surface of the slide panel, the insertion hole including an insertion portion into which the pair of first engaging portions are inserted and an extension extending from the insertion portion in the forward and backward directions,
Wherein a flange portion is formed at an upper end of the first engagement portion in a shape corresponding to an insertion portion of the first insertion hole,
Wherein a center portion of the first engagement portion is formed to have a width corresponding to an extension formed to have a width smaller than a width of the insertion portion so that the slide panel can move,
The slide panel is horizontally disposed to be parallel to the flange portion when the first coupling portion is coupled to the first insertion hole,
Wherein the user rotates in the vertical direction according to the weight of the user or the operation force applied by the user. delete The method according to claim 1,
A first housing having a space in which the fixing shaft and the elastic member are installed,
A second housing having a space in which the rotation shaft is disposed and formed in a left-right direction so as to intersect with the first housing,
The first housing is installed to be rotatable in a vertical direction about the second housing by a rotation operation of the body,
Wherein the body is slidable in an anteroposterior direction at an upper portion of the first housing and the second housing during the rotation operation. The method according to claim 1,
The first control lever portion may include a first control lever installed on one side of the connection portion toward the outside of the body,
And a support shaft for pivotally supporting the first control lever so as to be rotatable along the vertical direction,
The second adjusting lever portion includes a second adjusting lever movably installed along the body in the lateral direction,
A fixing protrusion protruding from an inner end of the second control lever and sequentially engaged with a space between a plurality of adjustment protrusions formed on the slide panel to lock the movement of the slide panel;
And a first spring for providing a restoring force to keep the fixing protrusion in a state of being engaged with the space between the adjusting protrusions. The method according to claim 1,
Further comprising a locking portion for locking or releasing the tilting operation by the operation of the third control lever portion,
Wherein the locking portion includes a transmission link that rotates about a third axis installed in a direction perpendicular to the body according to a direction of a force transmitted from the third control lever portion,
And a locking member which moves in the lateral direction by the rotation operation of the transmission link to lock or unlock the tilting operation. 8. The method of claim 7,
The third control lever portion may include a third control lever movably installed along the body in the lateral direction,
A transmitting member for transmitting a force generated by the movement of the third control lever to the transmitting link of the locking portion,
A fixing piece for fixing the position of the third control lever,
And a second spring for providing a restoring force to the fixing piece,
A V-shaped guide tab for guiding the movement of the fixing piece is formed on the upper surface of the body,
Wherein a fixing block is formed on a lower surface of the fixing piece to fix the fixing piece in a forward and backward direction along the guide jaw in a moving direction of the fixing piece in a lateral direction. 8. A chair assembly comprising: a chair assembly as claimed in any one of claims 1, 3 and 5 to 8,
Wherein the chair assembly adjusts the forward and backward position and height of the seat portion, adjusts the tilting angle of the seat portion and the backrest, and adjusts the tension acting on the elastic member based on the user's body weight A chair with an assembly.

Images