KR20080000846U - Backplate for chair - Google Patents

Abstract

While the two backrest outer plates 101 are axially separated from each other, the backrest outer plates 101 are coupled to each other by means of bolts with elastic elements, and the two backrest outer plates 101 and 101 and cushioning ( The structure and shape of the 401, 401 is a shape that surrounds the back of both sides of the waist shaft of the human body, when viewed from the top to the bottom of the chair, the shape of the upper back portion 401a of the two backrest shells and the cushion is the inner end of the backrest. It keeps in a straight line horizontally at a predetermined distance from the 201 and protrudes into a curved portion in the form of a needle-shaped (b) to the outer end (401b), and when viewed from the side of the backrest contact the back portion of each shape of the backplate outer plate and the cushion The part to be formed is formed by the concave portion 200 having a concave shape at a predetermined distance, and the inner end 201 of the backrest is in a straight line.

Chair, rear support, backrest, tension, recess, middle rail, elastic element

Description

Backrest for chair {{Backplate for chair}

1 is a schematic rear perspective view to which the chair back structure of the present invention is applied;

Figure 2 is a schematic side view to which the chair back structure of the present invention is applied

Figure 3 is a schematic perspective view of the chair back of the subject innovation of the present invention

Figure 4 is a schematic plan view from above of the chair back structure of the present invention

Figure 5 is a side view as seen from the right side of the chair back structure of the present invention

Figure 6a is another embodiment of the present invention, the rear view of the chair back structure

FIG. 6B is a schematic cross-sectional view taken along line AA ′ of FIG. 6A, and is an enlarged cross-sectional view of the elastic element in the embodiment; FIG.

7 is a schematic view showing the structure of a conventional chair back

Explanation of symbols on the main parts of the drawings

101: outer plate 102: elastic element

103: middle side stand 108: bolt

The present invention relates to a close-type chair back, and more particularly, to ensure that the left and right backboards conform to the body shape of the seated person when they sit on the chair to support the spine and lumbar spine, as well as comfort and comfort. And, even if the body is back to the back of the chair to support the back close.

In general, the chair back is composed of the contact surface of the horse saddle, so that the face of the back is uniformly formed when sitting, and there are many difficulties in satisfying people with various physical characteristics.

In addition, office chairs and home chairs that are commonly used are formed by integrally forming a cushion to support the buttocks of the seat and the backrest supporting the back portion, or after separating the cushion and the backrest, the backrest can be adjusted at an angle to the rear of the cushion. It is intended to give users convenience.

However, in such a case, the user's back and the back part are easily fatigued and correct because the back part of the user is not completely in close contact and the back part only touches the center position. It has the disadvantage of not being able to maintain posture.

In order to solve this problem, the backrest in the recent years is composed of a dual pack type so that a pair of backrests comfortably wrap both sides of the back when seated on a chair to maintain a stable and correct posture.

Looking at the backrest 1 of the conventional dual pack type as described above with reference to FIG.

In a chair back comprising two backrest shells (1), the two backrests (A, B) are separated from each other in an axial direction and concave when viewed in an axial direction perpendicular to the seat surface and the seat surface. It is formed convexly in the form of contact surface of the horse saddle when viewed in the transverse horizontal axis direction disposed above, the ends of the elastic element 2 on the upper and lower ends of each of the backrest shell 1, the intermediate crossbar and the support shaft 4 And the chair back, which is firmly connected by the elastic means 6, has already been disclosed.

Therefore, when viewed from the structure of the conventional chair back, when the seated person is in close contact with the back for a long time or strongly, there is a problem that not only gives a feeling of pressure on the back and waist of the body but also may cause the spine to bend.

Therefore, the present invention has been devised to solve the above problems, the present invention relates to a close-type chair back, more specifically, a chair having a pair of backrests to surround the seat left, right of the seat It is an object of the present invention to improve the backrest and to form a concave view from the front of the chair back so that the back can be in close contact with the back of the chair so that a comfortable posture can be taken.

In order to achieve the above object, the present invention, while the two backrest outer plate 101 is axially separated from each other at the same time, the backrest outer plate 101 is coupled by a bolt with an elastic element on the middle side stand, The structure and shape of the backrest outer plate 101, 101 and the cushion 401, 401 of the dog is a shape that surrounds the back of both sides of the waist axis of the human body, and when viewed from the top to the bottom of the chair, The shape of the upper protrusion 401a is maintained in a straight line horizontally at a predetermined distance from the inner end 201 of the backrest and protrudes into a curved portion in the form of a needle with the outer end 401b, when viewed from the sides of the backrests. The portions of the backrest outer plate and the cushioning that are in contact with the back portion are formed by the concave portion 200 having a concave shape at a predetermined distance, and the inner end 201 of the backrest is in a straight line. The crosspiece forms a rear support portion 18 of the flat plate, wherein the elastic element passes through the rear support portion and is coupled to the backrest portion, and is formed at an end of the shaft portion and is exposed to the rear side of the rear support portion to expose the shaft portion. Adjusting bolt having a head for adjusting the separation distance between the rear support and the back portion by rotating in the forward and reverse directions; At least one spring that imparts tension to the operation of the adjustment bolt; And while shielding the shaft portion and the spring of the adjustment bolt from the outside, it characterized in that it comprises a corrugated pipe that can contract and expand along the longitudinal direction of the shaft portion.

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the present invention for achieving the above object.

1 is a schematic rear perspective view to which the chair back structure of the present invention is applied, FIG. 2 is a schematic side view to which the chair back structure of the present invention is applied, FIG. 3 is a schematic perspective view of a chair back of the present invention, and FIG. Figure 5 is a schematic plan view from above of the chair back structure of the present invention, Figure 5 is a side view seen from the right side of the chair back structure of the present invention, Figure 6a is another embodiment of the present invention, a back view of the chair back structure, Figure 6b is Fig. 6A is a schematic cross-sectional view showing a line A-A ', showing an enlarged cross-sectional view of an elastic element in the embodiment.

The present invention relates to a chair back structure, wherein the two backrest outer plates 101 are axially spaced apart from each other and the backrest outer plate 101 is connected to the bolt 108 with an elastic element 102 on the middle rail 103. Is coupled to, the elastic element 102 is bent in order to secure the chair back upper and lower parts of the body in the form of a diverge (c), the upper end is fixed at the center of the chair back by bolts 107, In order to prevent sagging of the chair back, the bottom of the chair back is fixed at the bottom of the center, and is fixed by the horizontal movement fixing hole 111 and the bolt 108 of the middle side stand 103 to adjust the width thereof.

In addition, the structure and shape of the two backrest outer plate 101 (101) and the cushion (401) (401) is a shape surrounding the back of both sides of the waist axis of the human body, when viewed from the top to the bottom of the two backrest The shape of the upper projection 401a of the outer plate and the cushion is kept in a straight line horizontally at a distance from the inner end 201 of the backrest, and protrudes into a curved portion in the form of a needle with the outer end 401b. When viewed from the side, the portion of each of the backrest outer plate and the cushion in contact with the back portion is formed by the concave portion 200 having a concave shape at a predetermined distance, and the inner end 201 of the backrest is in a straight line, and the chair From the front, the backrest has a concave shape, and the backrest has a shape that is enclosed by a person's back.

An elastic element of another embodiment includes a shaft portion coupled to the backrest portion through the rear support portion, and formed at an end portion of the shaft portion and exposed to the rear side of the rear support portion to rotate the shaft portion in the forward and reverse directions to support the rear support portion. Adjusting bolt having a head for adjusting the separation distance between the backrest portion; At least one spring that imparts tension to the operation of the adjustment bolt; And while shielding the shaft portion and the spring of the adjustment bolt from the outside, it characterized in that it comprises a corrugated pipe that can contract and expand along the longitudinal direction of the shaft portion.

Reference numeral 110 is a head restraint.

As described above, the portions of the backrest outer plate 101 that are in contact with the back portion form a concave portion in a straight line, and at the bottom thereof, even when the back is leaned back, the back and the chair back are in close contact with each other.

In another embodiment, in order to give the support elasticity, the rear support 18 is provided in a wave shape having a substantially "S" shape, as shown in FIGS. 6A to 6B.

The area of the posterior support 18 is formed to span the entire two backrest 101. However, the area of the rear support part 18 may be smaller than that shown, and the rear support part 18 may be separately manufactured.

The force supported by the user on the backrest part is formed by forming the rear support part 18 in a wave shape having an approximately "S" shape, and thereby supporting the backrest shell 101, 101 and the cushion 401, 401. Even if this is weighted, deformation does not occur in the rear support 18.

Of course, in addition to the morphological features, in order to faithfully perform the original function of supporting the backrest, it will be preferable that the rear support 18 itself is made of a material having a certain elasticity. In other words, the rear support 18 itself may be replaced by a leaf spring. On the other hand, the morphological features of the rear support 18 also contribute to improving the beauty of the appearance to the chair.

The rear support 18 is to support the backrest portion of the backrest outer plate 101, 101 and the cushion portion 401, 401 from the rear should be fixed to the two backrest outer shell, respectively, of course, Each of the two backrest portions relative to the posterior support 18 need to be elastically approached and spaced apart. This is enough for all users of different sizes or weights.

To this end, the rear support 18 and the two backrest shells 101 and 101 and the cushion 401 and 401 corresponding thereto, respectively, not only secure the rear support 18 to the corresponding backrest, but also the rear support ( An elastic element 22 is further provided to adjust the tension by elastically adjusting each of the two backrest portions with respect to 18).

Since the structure and operation of the two elastic elements 22 are all the same, a description will be made based on the enlarged view of FIG. 6B.

The elastic element 22 includes an adjusting bolt 24, a spring 26, and a corrugated pipe 28, as enlarged in FIG. 6B.

The adjusting bolt 24 is formed at the end of the shaft portion 24a through the rear support portion 18 and coupled to the backrest portion, and is exposed to the rear surface of the rear support portion 18 so as to expose the shaft portion 24a. It is provided with a head portion 24b for adjusting the separation distance between the rear support portion 18 and the backrest portion by rotating in the forward and reverse directions.

Head 24b is preferably made of a form that can be operated by hand without a separate tool. In the form of a so-called knob, the head 24b may be formed. Therefore, referring to FIG. 6B, only the head 24b is exposed on the rear surface of the rear support 18.

The spring 26 serves to give tension to the operation of the adjustment bolt 24. As shown, two may be formed or a larger number may be employed. Of course, the configuration may be excluded.

Corrugated pipe 28 serves to shield the outside of the shaft portion 24a of the adjustment bolt 24 and the spring 26 so that the spring 26 is not exposed to the outside. That is, as the shaft portion 24a rotates by manipulating the head portion 24b of the adjustment bolt 24, the distance between the rear support portion 18 and the backrest portion changes, so that the corrugated pipe 28 is provided to correspond thereto. will be.

The chair back structure as described above can support the entire back of the person by supporting the concave back plate 101 together with the left and right sides of the back, and the concave teeth formed on the side of the back plate 101 when the back is pinched. The back of the chair (b) supports both shoulders to have more comfort, and when you lean on the back, the back of the chair is in close contact with the more comfortable.

Claims (3)

While the two backrest outer plates 101 are axially separated from each other, the backrest outer plates 101 are coupled to each other by means of bolts with elastic elements, and the two backrest outer plates 101 and 101 and cushioning ( The structure and shape of the 401, 401 is a shape that surrounds the back of both sides of the waist shaft of the human body, when viewed from the top to the bottom of the chair, the shape of the upper back portion 401a of the two backrest shells and the cushion is the inner end of the backrest. It keeps in a straight line horizontally at a predetermined distance from the 201 and protrudes into a curved portion in the form of a needle-shaped (b) to the outer end (401b), and when viewed from the side of the backrest contact the back portion of each shape of the backplate outer plate and the cushion The part to be formed is formed by the concave portion 200 having a concave shape at a predetermined distance, and the inner end 201 of the backrest is in a straight line. The seat back according to claim 1, wherein the middle crosspiece forms a rear support portion 18 of the flat plate. According to claim 1 or claim 2, wherein the elastic element is passed through the rear support portion coupled to the backrest portion, and formed in the end of the shaft portion and exposed to the rear of the rear support portion to expose the shaft portion in the forward and reverse direction Adjusting bolt having a head for rotating the separation distance between the rear support and the back portion by rotating; At least one spring that imparts tension to the operation of the adjusting bolt; And a pleated tube for shielding the shaft portion and the spring of the adjustment bolt from the outside, the corrugated tube contracting and expanding along the longitudinal direction of the shaft portion.

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