KR100651612B1 - Assembly structure of backplate for chair - Google Patents

Abstract

An assembly structure of a backplate for a chair is provided to assemble promptly and conveniently elements having complicated functions by coupling a backplate with a rotation compressing roll by use of a semi-circular or circular coupling tool. In the assembly structure of a backplate for a chair, a chair includes a backplate portion(100), a seat portion and a support and a backplate portion(100) includes a U shape outer iron frame portion(110), a backplate board(120), a cushion body(130), and a rotation compressing roll(140). The U shape outer iron frame portion(110) is coupled to the rear of the seat portion. The backplate board(120) is disposed and coupled to the inner side of the opening portion of the U shape outer iron frame portion(110). The rotation compressing roll(140) is rotatively disposed and coupled to the inner lower part of the U shape outer iron frame portion(110).

Description

ASSEMBLY STRUCTURE OF BACKPLATE FOR CHAIR}

1 is a perspective view of a chair to which the prior art is applied;

Figure 2a is an exploded perspective view of the backrest for a chair according to the invention,

2B is a perspective view illustrating a state in which FIG. 2A is coupled;

3A is a cross-sectional view taken along line II ′ of FIG. 2B;

3B is a cross-sectional view taken along the line II-II ′ of FIG. 2B;

3C is a cross-sectional view taken along the line III-III ′ of FIG. 2B;

Figure 4a is a partial exploded perspective view of the excerpt of the coupler applied to the present invention,

4B is a partial cross-sectional view taken along line AA ′ of FIG. 4A;

5 is a side view showing a state of use of the rotary pressing roll of the present invention,

Figure 6 is a use state showing a state in which the backrest for the chair of the present invention is coupled to the seat plate portion,

Figure 7a is an exploded perspective view showing another coupling structure of the backrest for the chair according to the present invention,

7B is a perspective view illustrating a state in which FIG. 7A is coupled.

<Explanation of symbols for main parts of the drawings>

100: back portion 110: "∪" shaped outer steel portion 110a: coupling hole

111: seat plate coupling bracket 120: back plate 120a: coupling hole

120b: engaging member 121: connecting piece 122: headrest frame

122a: coupling groove 122b: coupling hole 130: back cushion

140: rotary press roll 141: through hole 142: rotation axis

143: core 143a: core cover 143b: coupling member

144: cushioning body 145: surface leather material 150: coupling tool

150a: through hole 150b: coupling member 151: swinging groove

152: mounting hole 153: elastic member 160: headrest

161: fixing member 162: through hole 163: position adjusting hole

200: seat plate

The present invention relates to a backrest for a chair, and more particularly, to enable convenient and rapid assembly using a semicircular and circular coupler, and having a rotatable press roll rotatable while supporting the lumbar spine of the seated seat. The present invention relates to an assembly structure of a chair back for providing a massage function.

Office chairs and home chairs, which are generally used, provide convenience to users by integrally forming cushions of the seat plate that support the buttocks of the seat and the backrest supporting the back part.

In this case, however, the user's back is not completely in close contact with the backrest and cannot support the lumbar spine stably, making the back and back of the seat occupied tired and unable to maintain a correct posture. Cause of the onset.

Figure 1 shows a conventional chair containing such a problem, a seat plate support (5) supporting from the bottom and the seat plate support (4) and the like to support the buttocks of the seat to the seat plate support (5) above The main body includes a backrest plate 1 and a backrest cushioning body 2, and includes a backrest outer steel part 3 connecting the backrest plate 1 and the seat plate part 5.

Such a conventional chair is unable to solve the above-described problems due to its structural characteristics, and seated people who need to sit and work for a long time require a chair that can maintain a comfortable and stable posture.

The present invention has been invented to solve the conventional problems as described above, an object of the present invention is to provide a convenient and quick assembly of the "∪" shaped outer steel frame part using a circular and semi-circular coupling.

Another object of the present invention is to provide a massage function to the lumbar spine of the seated by having a rotary pressing roll rotatable while supporting the lumbar spine of the seated.

The assembly structure of the backrest for the chair of the present invention for achieving the above object, the "∪" shaped outer steel frame portion coupled to the rear plate portion, and the "back" shaped outer steel frame is located in the opening of the back plate coupled And it is characterized in that it comprises a back cushion body coupled to the back plate and a rotation pressing roll rotatably coupled to the inner bottom of the "∪" shaped outer steel frame.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2A and 2B, FIG. 2A illustrates an exploded perspective view of a backrest for a chair according to the present invention, and as shown, the backrest part 100 has a large “∪” shaped outer steel frame part 110 that forms a skeleton. And a rotary pressing roll 140 coupled to the lower outer circumference of the “∪” shaped outer steel frame 110 and the backrest plate 120, and the backrest cushioning body 130 and the head coupled to the front of the backrest plate 120. Is provided with a headrest frame 122, the headrest 160 is coupled to the headrest frame 122.

The "∪" shaped outer steel frame 110 is a cylindrical cross-section of the hollow hollow pipe shape, when viewed from the side is bent in the shape of an arc to the rear rear, the seat plate coupling bracket 111 integrally at the bottom center Is formed to protrude.

The seat plate coupling bracket 111 is combined with the coupling groove of the seat plate 200, not shown, to form a chair that is a finished product.

The "∪" shaped outer steel frame 110 will be obvious that the shape can be modified in various forms by those skilled in the art.

The back plate 120 has a plurality of through-holes (120a) is formed, the back cushion body 130 is located in front by the coupling member 120b inserted into the through-holes (120a), both sides of the upper It is formed integrally with the headrest frame 122 by the connection piece 121 provided in.

In addition, the semi-circular ring-shaped coupler 150 is integrally formed at both lower left and right sides, and supports the outer circumferential surface of one side of the "∪" -shaped outer steel frame 110 through the coupler 150 and at one side. Coupling with the outer circumferential surface of the "철" shaped outer steel frame 110 by a coupling member 150b inserted into the formed through hole 150a.

Coupling members (120b, 143b, 150b) used in the article of the present invention is preferred to use a screw piece (screw) to press and combine by using the rotational force of the power drill in various kinds depending on the material or other working conditions used Can be used.

The headrest frame 122 has an arc-shaped bent shape in the upper rear when viewed from the side, the coupling hole 122b for mounting the headrest 160 in the upper center is formed, the left and right lower ends By forming a defect groove 122a into which the left and right upper ends of the “∪” shaped outer steel parts 110 are inserted, the left and right steel frames of the “∪” shaped outer steel parts 110 are connected to the whole. Complete the square shape.

The headrest 160 is inserted into the coupling hole 122b formed in the headrest frame 122, and is fixed by inserting and supporting the fixing member 161 in the through hole (see FIG. 3A) formed at the rear thereof. do.

The rotary pressing roll 140 is fastened by the coupler 150 to the lower side of the outer circumferential surface of the "∪" -shaped outer steel frame 110.

The rotary pressing roll 140 has a cylindrical shape, a through hole 141 is formed at the inner center thereof so as to be rotatable, and a rotating shaft fitted with both ends protruding from both sides of the rotary pressing roll 140 in the through hole 141. 142 is installed.

FIG. 2B illustrates a state in which the components of the backrest for a chair according to the present invention of FIG. 2A are assembled to form an article.

Referring to FIG. 3A, the chair back of the present invention is shown in side cross-sectional view along the line II ′ of FIG. 2B.

The headrest 160 is coupled to the headrest frame 122 by the fixing member 161, and forms a position adjustment hole 163 to adjust to a predetermined height according to the height of the head according to the seated person's sitting key, Provide correct posture and comfort.

Referring to FIG. 3B, a coupling relationship between the backrest plate 120 formed integrally with the semicircular ring-shaped coupler 150 and the back cushion body 130 attached to the front surface thereof are shown in the sectional view taken along the line II-II ′ of FIG. 2B. It is a cross-sectional view that is easy to understand.

The coupling sphere 150 has a ring shape formed at one end of the semicircle by a predetermined length in the other traveling direction, so that when the outer periphery of the "∪" -shaped outer steel frame 110 is mounted, it is "perfect". Coupled with the sound that is mounted in close contact with the outer periphery of the "∪" shaped outer steel frame 110 is more closely attached.

Referring to FIG. 3C, a cross-sectional view taken along line III-III ′ of FIG. 2B, and the coupling relationship between the components of the rotary pressing roll 140 positioned to be rotatably coupled to the inner bottom of the “∪” shaped outer steel frame 110. It is shown.

The rotary pressing roll 140 is formed in a cylindrical shape, a through hole 141 is formed in the inner center thereof, and inserted into the through hole 141 is installed at both ends protruding to both sides of the rotary pressing roll 140. The rotating shaft 142 is installed.

The rotating shaft 142 is provided with a semi-circular annular coupling sphere 150 is rotatably coupled to both ends thereof is coupled to the "∪" shaped outer steel frame 110.

The rotary pressing roll 140 has a rectangular swing groove 151 is formed so that the rotating shaft 142 inserted through the center thereof is movable back and forth, the outer peripheral edge in the longitudinal direction from the inside of the swing groove 151 The mounting hole 152 penetrated to the surface is formed.

4A and 4B, a partial exploded perspective view and a partial sectional view taken along the line A-A 'of FIG. 4A extracting the main portion of the coupler 150 applied to the present invention, wherein the coupler 150 is the rotary roll. The rotation shaft 142 of the 140 is characterized in that the rectangular swing groove 151 is formed to support the moveable.

The coupling hole 150 is provided with a through hole 150a at one side thereof and is coupled to the outer circumference of the “∪” shaped outer steel frame 110 by a coupling member 150b inserted into the through hole 150a. .

4B shows that the rotating shaft 142 inserted into the rectangular swing groove 151 by the elastic member 153 is helically coupled to the mounting hole 152 formed inside the swing groove 151, and swings the groove 151. It shows the state of oscillation before and after within the range.

The mounting hole 152 has a spiral portion formed in the inner circumference and spirally coupled to the elastic member 153 inserted into the mounting hole 152.

The elastic member 153 is the elastic spring is coupled to one side thereof to support the rotating shaft 142, the other side is formed with a spiral formed on the outer periphery spiral and spiral formed on the inner periphery of the mounting hole 152 To combine.

Referring to Figure 5, the side view showing the state of use of the front and rear swing of the rotary pressing roll 140 of the present invention according to the swing groove 151 described in Figure 4b, the rotary pressing roll 140 is the present invention The "상태" shaped outer skeleton forming the skeleton of the outer steel 110 is mounted on the lower side shows the state of the front and rear oscillation and rotational movement.

This is because when the seated person comes into close contact with the back of the chair of the present invention, the back of the seat 100 is squeezed back and the rotational pressure roll 140 is pushed back by the swing groove 151 range so that the lumbar spine of the seated person Pressing the roll more tightly while supporting the lumbar support comfortably.

In this state, when the rotary press roll 140 rotates, the massage function is provided to the lumbar spine of the seated person, thereby providing an effect of providing a more improved massage function than before.

6 is a state diagram showing a state in which the backrest for the chair of the present invention is coupled to the seat plate 200, and illustrates a chair in a finished state in which the seat plate 200 is coupled to the chair back of the present invention.

7A and 7B, FIG. 7A is an exploded perspective view showing another coupling structure of the backrest part 100 for a chair according to the present invention, wherein the backrest part 100 is at the bottom left and right of the backrest plate 120. As each of the circular coupling sphere 150 is integrally coupled to each other through the outer periphery of the "∪" -shaped outer steel frame 110 is coupled to the "자" -shaped outer steel frame 110.

And the upper end of the "∪" -shaped outer steel frame 110 is inserted into the coupling groove (122a) formed in the lower left and right of the headrest frame 122 is to combine the backrest 100 is integrated.

In addition, the coupler 150 for coupling the rotary pressing roll 140 to the lower outer periphery of the "∪" -shaped outer steel frame 110 is also integrated into a circular mounting.

That is, by combining the coupling sphere 150 in a circular shape so as to penetrate through the outer periphery of the "∪" -shaped outer steel frame 110, respectively, to combine the components of the present invention to perform relatively various functions and Can be assembled quickly

FIG. 7B illustrates a state in which the components of the backrest for chair according to the present invention of FIG. 7A are assembled to form a completed chair.

The technical idea of the assembling structure of the backrest for chair of the present invention has been described above with the accompanying drawings, but this is only illustrative of the preferred embodiment of the present invention and not intended to limit the present invention.

Therefore, it is apparent that any person skilled in the art can make various modifications and imitations such as dimensions, shapes, structures, etc. without departing from the scope of the technical idea of the present invention.

As described above, according to the assembly structure of the backrest for the chair according to the present invention, by combining the backrest and the pressing roll using the semicircular and circular coupling spheres on the outer periphery of the "∪" shaped outer steel frame forming the skeleton of the backrest By assembling components that perform relatively complex functions conveniently and quickly, there is an effect of easy work process and work time.

In addition, it is equipped with a rotary pressure roll on the lower periphery of the "∪" shaped outer steel frame forming the skeleton of the backrest to support the seat lumbar spine of the seat and correct the posture, and provide more improved massage function as the front and rear swing is possible while rotating. It is effective.

Claims (5)

A chair having a backrest, a seat plate and a stand, And "∪" shaped outer steel frame portion 110 to be coupled to the rear plate portion 200; A back plate 120 coupled to the inner side of the opening of the “∪” -shaped outer steel frame part 110; A back cushion body 130 coupled to the front of the back plate 120; Assembly structure of the backrest for a chair, characterized in that the backrest portion 100 comprises a rotary pressing roll 140 is located in the inner bottom of the "∪" shaped outer steel frame 110 is rotatably coupled. The method of claim 1, wherein the back plate 120, A connection piece 121 provided on both sides of the upper portion and integrally formed with the headrest frame 122; Supporting one side of the outer circumferential surface of the "∪" shaped outer steel frame 110, the headrest frame 122 is formed with a coupling groove (122a) is fixedly inserted at both upper ends of the "∪" shaped outer steel frame 110 ; Semicircular ring-shaped coupler 150 for supporting the other side of the outer circumferential surface of the "∪" shaped outer steel frame 110, and couples the back plate 120 to the "∪" shaped outer steel frame 110; Chair back assembly structure, characterized in that. The method of claim 1, wherein the rotary rolling roll 140, Is formed in a cylindrical shape, the through hole 141 is formed in the inner center, the rotating shaft 142 is inserted into the through hole 141 and both ends protrude to both sides of the rotary pressing roll 140, Assembled structure of the chair back, characterized in that the semi-circular ring-shaped coupling sphere 150 is coupled to both ends of the rotating shaft 142 to be coupled to the "∪" shaped outer steel frame 110, respectively. . The method of claim 3, wherein the coupler 150, A rectangular swing groove 151 provided so that the rotating shaft 142 inserted through the rotary pressing roll 140 is movable back and forth; Assembly structure of the backrest for the chair, characterized in that it comprises an elastic member 153 is coupled to the mounting hole 152 penetrating in the longitudinal direction in the swing groove 151 to support the rotating shaft 142 . The method of claim 2 or 3, wherein the coupler 150, Assembling structure of the backrest for a chair, characterized in that formed in the form of a coupling unit 150 is formed so that the outer periphery of the outer periphery of the "∪" -shaped outer steel frame 110 is formed in a one-piece circular.

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