KR200436742Y1 - Chair - Google Patents

Abstract

The present invention relates to a chair, and in particular, a seat, a lumbar support member positioned behind the seat to support the seat of the seater, and a back post member positioned behind the lumbar support member to support the lumbar support member; And a height adjusting means for adjusting the height of the lumbar support member with respect to the back post member, wherein the height adjusting means is different from any one of the lumbar support member and the back post member. A pair of side wall portions protruding while facing each other toward the member side of the member; An extension part extending in a direction approaching each other from the side wall parts; A guide plate fixed to the other one of the lumbar support member and the back post member and fitted into a space partitioned by the side wall portions and the extension portion; And an elastic unit elastically pressurizing the guide plate toward the extension part so as to be in close contact with the extension part, wherein the guide plate is formed with a plurality of hole portions spaced apart in the vertical direction, and the elastic unit includes any one of the hole parts. It relates to a chair characterized in that the height of the lumbar support member is determined by being seated on one.

Description

Chair {Chair}

1 is a perspective view of a chair according to an embodiment of the present invention.

Figure 2 is a perspective view of the lumbar support member, the back post member and the height adjustment means of the chair shown in Figure 1 assembled.

Figure 3 is an exploded perspective view of the lumbar support member, back plate member and height adjustment means shown in FIG.

4 is a sectional view taken along line IV-IV of the lumbar support member, back post member and height adjustment means shown in FIG.

5 is a cross-sectional view taken along line V-V of the lumbar support member, back post member and height adjustment means shown in FIG.

FIG. 6 is a cross-sectional view of the ball member shown in FIG. 5 moving between adjacent hole portions. FIG.

<Description of the symbols for the main parts of the drawings>

100: chair 102: seat

104: leg 106: backrest

108: headrest 110: armrest

120: lumbar support member 130: back post member

141: side wall portion 142: extension portion

143: guide plate 144: hole

150: elastic unit 151: cap member

152: ball member 153: spring

The present invention relates to a chair, and more particularly, to a chair that can easily adjust the height of the lumbar support member supporting the back of the seated person.

As shown in FIG. 1, a typical chair includes a seat 102 on which a seated hip is seated, a leg 104 supporting the seat 102, and a back 106 supporting the back of the seated seat. ), A headrest 108 supporting the seated person's head, an armrest 110 capable of wearing the seated person's arm, and a lumbar support member 120 supporting the seated person's waist.

The lumbar support member 120 is located at the rear of the seat 102 where the seated person sits and comfortably supports the waist of the seated person, and is coupled to the back plate member 130 supporting the backrest 106. The lumbar support member 120 is a back post member so that a seated person can adjust the height of the lumbar support member 120 to a height that can comfortably support his waist according to his / her body structure and habit of sitting on a chair. 130) height adjustable in the vertical direction is coupled to.

In the related art, in order to adjust the height of the lumbar support member, a female screw portion is generally formed on the rear surface of the lumbar support member, and a mediating member having a long handle formed in the vertical direction and a rotation knob which is screwed to the female screw portion is provided. , And a rotating handle was inserted into the long hole with the intermediate member interposed therebetween to fasten to the female screw portion of the lumbar support member. When the lumbar support member is located at the desired height of the seated person, tighten the rotation handle to close the lumbar support member, the media plate and the rotation handle to fix the height of the lumbar support member, and to change the height of the lumbar support member, After separating the lumbar support member, the media plate and the rotation handle, the height of the lumbar support member was adjusted along the long hole.

 However, in the conventional configuration for adjusting the height of the lumbar support member, to securely fix the lumbar support member at the determined height, tighten the rotation knob as hard as possible so that the lumbar support member does not move in the vertical direction. Therefore, it was not easy to adjust the height of the lumbar support member to fit his or her body structure by loosening the rotation knob tightened by the weak seated person, for example, the elderly, female or child. In addition, in the process of adjusting the height of the lumbar support member, while holding the lumbar support member with one hand to tighten or loosen the rotation handle with one hand, adjusting the height of the lumbar support member becomes cumbersome. have.

The present invention was devised to solve the above problems, in the process of adjusting the height of the lumbar support member supporting the waist of the seated person according to the body structure of the seated person, easily using a small force by using a small force An object of the present invention is to provide a chair having an improved structure to adjust the height of the supporting member.

In order to achieve the above object, the chair of the present invention includes a seat portion, a lumbar support member positioned behind the seat portion to support the waist of the seated person, and positioned behind the lumbar support member to support the lumbar support member. A chair comprising a back post member and a height adjusting means for adjusting the height of the lumbar support member relative to the back post member, wherein the height adjusting means is any one of the lumbar support member and the back post member. A pair of side wall portions protruding from each other toward the other member side; An extension part extending in a direction approaching each other from the side wall parts; A guide plate fixed to the other one of the lumbar support member and the back post member and fitted into a space partitioned by the side wall portions and the extension portion; And an elastic unit elastically pressurizing the guide plate toward the extension part so as to be in close contact with the extension part, wherein the guide plate is formed with a plurality of hole portions spaced apart in the vertical direction, and the elastic unit includes any one of the hole parts. The height of the lumbar support member is determined by being seated on one.

In the chair according to the present invention, Preferably, the side wall portions are formed in the lumbar support member, the guide plate is fixed to the back post member.

In the chair according to the present invention, Preferably, the elastic unit, the cap member coupled to the lumbar support member; A ball member movably coupled to the cap member in a forward and backward direction, the ball member being inserted into a hole located at a corresponding height among a plurality of hole portions of the guide plate; And a spring for elastically pressing the ball member toward the guide plate.

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

Figure 2 is a perspective view of the assembly of the lumbar support member, back plate member and height adjustment means of the chair shown in Figure 1, Figure 3 is an exploded view of the lumbar support member, back plate member and height adjustment means shown in FIG. 4 is a sectional view taken along line IV-IV of the lumbar support member, the back post member and the height adjustment means shown in FIG. 2, and FIG. 5 is the lumbar support member, the back post member and the height adjustment means shown in FIG. V-V line sectional drawing, and FIG. 6 is sectional drawing of the ball member shown in FIG. 5 moving between adjacent hole parts.

1 to 6, the chair 100 of the present embodiment is configured to easily adjust the height of the lumbar support member 120 supporting the seat of the seated person, and the lumbar support member 120. , Back plate member 130, and height adjustment means.

The lumbar support member 120 is located at the back of the seat 102, the seat occupant to support the waist of the seat, it may be made of a soft material, such as urethane, may be located in front of the backrest 106, In the embodiment is located behind the backrest 106 is supported by the back post member 130 to be described later.

The back post member 130, which is located behind the lumbar support member 120 to support the lumbar support member 120, the backrest 106 supporting the back of the seated person together with the lumbar support member 120 It is fixed to the back post member (130).

The height adjusting means is for adjusting the height of the lumbar support member 120 with respect to the back post member 130, the side wall portion 141, the extension portion 142, the guide plate 143 and the elastic unit 150 ).

The side wall portion 141 is formed on the rear surface 121 of the lumbar support member and protrudes from the rear surface 121 of the lumbar support member toward the back post member 130. In the present embodiment, a pair of side wall portions 141 are provided and formed to face each other with a predetermined distance apart.

The extension part 142 is formed to extend in a direction approaching each other from each side wall part 141, when the lumbar support member 120 and the guide plate 143 to be described later, the rear surface 143b of the guide plate ) Is in close contact with As the extension part 142 and the rear surface 143b of the guide plate are in close contact, the lumbar support member 120 is prevented from moving upward and downward. In this embodiment, a pair of extensions 142 are provided, but a pair of extensions may be connected to each other to constitute a single extension.

The guide plate 143 is fixed to the back post member 130 to support the lumbar support member 120, and is fitted in a space partitioned by the side wall portions 141 and the extension part 142. It is coupled with the lumbar support member 120. A plurality of holes 144 are formed on the front surface 143a of the guide plate to be spaced apart in the vertical direction.

The elastic unit 150, after adjusting the height of the lumbar support member 120, to prevent the lumbar support member 120 from moving in the vertical direction at the determined height, lumbar support member 120 and the guide plate It is interposed between 143. When the elastic unit 150 is inserted into the back side 121 of the lumbar support member and the lumbar support member 120 and the guide plate 143 are coupled, the guide plate 143 is extended by the elastic unit 150. The back side 143b of the guide plate and the extension part 143 are in close contact with each other by being elastically pressed toward the portion 142. In addition, while adjusting the height of the lumbar support member 120, the elastic unit 150 is seated in any one hole 144, the elastic unit 150 is seated in the hole 144, so that the lumbar support member ( The height of 120 is determined. The elastic unit 150 includes a cap member 151, a ball member 152, and a spring 153.

The cap member 151 is coupled to the lumbar support member 120 and accommodates the ball member 152 and the spring 153 which will be described later.

The ball member 152 is coupled to the cap member 151 so as to be movable in the front-rear direction, that is, in front of or behind the chair 100. While the height of the lumbar support member 120 is adjusted by the seated person, the ball member 152 coupled to the lumbar support member 120 has a corresponding height among the plurality of holes 144 formed in the guide plate 143. It can be inserted into the hole portion 144 located at. The rear surface 143b of the guide plate and the extension part 142 are in close contact with each other, and the ball member 152 is inserted into the hole part 144, so that the lumbar support member 120 does not fall downward while maintaining the determined height. It is supported by the post member 130.

The spring 153 elastically presses the ball member 152 toward the guide plate 143, and is accommodated in the cap member 151 and positioned in front of the ball member 152.

2 to 6, the operation principle of adjusting the height of the lumbar support member 120 in the chair 100 of the present embodiment will be described.

First, in the state where the ball member 152 is inserted into the hole 144 of the guide plate 143, the guide plate 143 is elastically pressurized toward the extension part 142 by the elastic unit 150 to guide. The back surface 143b of the plate is in close contact with the extension part 142, and the ball member 152 is inserted into the hole part 144 and caught by the hole part 144, so that the lumbar support member 120 is moved upward and downward. The current height is maintained without moving.

To adjust the height of the lumbar support member 120, as shown in FIG. 6, an external force is applied upward or downward to the lumbar support member 120. When the lumbar support member 120 is moved, the ball member 152 exits the hole portion 144 that has been inserted in the past and moves to the flat portion 145 formed between the hole portions 144, and the flat portion Pressed by 145 is moved to the front, that is, the lumbar support member 120 side. In this way, the lumbar support member 120 is moved to the adjacent hole portion 144 while the ball member 152 is in rolling contact with the guide plate 143.

Subsequently, when the external force applied to the lumbar support member 120 is removed, the ball member 152 is inserted into the new hole 144 and is again provided by the elastic unit 150 by the rear surface 143b of the guide plate and the extension portion ( 142 is in close contact, so that the lumbar support member 120 does not move in the vertical direction while maintaining the determined height.

Chair according to the present embodiment configured as described above, is configured to adjust the height of the lumbar support member using the elastic pressing force and the adhesion between the members. Therefore, the process of loosening and tightening the screw tightened as in the prior art is not necessary, and the height of the lumbar support member can be adjusted only by applying a force sufficient to overcome the elastic force of the spring. You can get the effect of adjusting the height.

In addition, the chair according to the present embodiment can finish the height adjustment of the lumbar support member simply by moving the lumbar support member upward or downward while simply pressing the lumbar support member toward the guide plate, thereby increasing the height of the lumbar support member. The effect which can make adjustment work easy can be obtained.

In the present embodiment, the side wall portions are formed in the lumbar support member and the guide plate is fixed to the back post member, but a guide plate is formed on the rear surface of the lumbar support member to form a hole in one surface of the guide plate facing the back post member. An additional portion may be formed and the side wall portions and the extension portion may be formed so as to face the lumbar support member side in the back post member.

Although the preferred embodiments and modifications have been described above, the chair according to the present invention is not limited to the above-described examples, and by various modifications or combinations of the examples, the chairs may have various forms within the scope without departing from the technical spirit of the present invention. The chair can be embodied.

The chair of the present invention can adjust the height of the lumbar support member by applying only a force capable of overcoming the elastic force applied by the spring, so that anyone with a small force can control the height of the lumbar support member. .

In addition, the chair of the present invention, by simply pressing the lumbar support member toward the guide plate side to move the lumbar support member upward or downward, so that the height adjustment of the lumbar support member can be completed, it is easy to adjust the height of the lumbar support member It can be effective.

Claims (3)

A lumbar support member seated behind the seat portion to support the waist of the seated seat; a back post member positioned behind the lumbar support member to support the lumbar support member; and the lumbar spine relative to the back post member. In the chair comprising a height adjusting means for adjusting the height of the support member, The height adjusting means, A pair of side wall portions protruding from one of the members of the lumbar support member and the back post member to face each other; An extension part extending in a direction approaching each other from the side wall parts; A guide plate fixed to the other one of the lumbar support member and the back post member and fitted into a space partitioned by the side wall portions and the extension portion; And an elastic unit for elastically pressing the guide plate toward the extension part to closely contact the extension part. The guide plate is formed with a plurality of holes spaced apart in the vertical direction, the chair characterized in that the height of the lumbar support member is determined by the elastic unit is seated in any one of the holes. The method of claim 1, And the side wall portions are formed in the lumbar support member, and the guide plate is fixed to the back post member. The method of claim 2, The elastic unit, A cap member coupled to the lumbar support member; A ball member movably coupled to the cap member in a forward and backward direction, the ball member being inserted into a hole located at a corresponding height among a plurality of hole portions of the guide plate; And And a spring for elastically pressing the ball member toward the guide plate.

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