KR200499125Y1 - Chair back plate with lumbar support - Google Patents

Abstract

The present invention relates to a chair backrest plate combined with a lumbar support, which has a compact structure and easy height adjustment by allowing the lumbar support to be adjusted in height to suit the user's body type, while the lumbar support is fixed in position by a protruding joint structure provided in the upper and lower directions.
That is, it is composed of an upper frame (2), a lower frame (3) that is joined to the upper frame (2) at the edge, and a lumbar support (4) that is joined to the central skeleton (32) of the lower frame (3).
The lumbar support (4) is connected to the hole (35) formed in the central frame (32) by a bolt (5).
The center of the above lumbar support (4) is provided with a protruding extension part (41) that is recessed from the surface and extended downwardly by a certain length, and an arc-shaped hole (42) that is formed long in the vertical direction and has an upper and lower end in an arc shape is provided on the lower surface of the above protruding extension part (41), and a rectangular hole (43) that is somewhat smaller in length and width so that a step (44) is formed at the lower portion of the above arc-shaped hole (42), and a number of unevennesses (45) are formed in the vertical direction of the above rectangular hole (43).
A square projection (36) protruding forward is provided at the location where the hole (35) of the central skeleton (32) is located, and a protrusion (37) is formed on the left and right sides of the square projection (36) to engage with the protrusion (45) of the rectangular hole (43).
The lumbar support (4) is coupled so that its length can be adjusted in the vertical direction along a rectangular hole (43), and is characterized by being configured so that the height of the lumbar support (4) can be conveniently adjusted according to the user's body type.

Description

Chair back plate with lumbar support {Chair back plate with lumbar support}

The present invention relates to a chair backrest plate with a lumbar support.

The present invention relates to a chair backrest having a lumbar support that is compact in structure and easy to adjust in height by allowing the lumbar support to be adjusted in height to suit the user's body type, while the lumbar support is fixed in position by a protruding joint structure provided in the upper and lower directions.

The chair backrest with lumbar support is designed to prevent back pain or spinal diseases and relieve the pain caused by them. The lumbar support supports the spine by bending along the natural curve of the spine, thereby reducing the pressure on the spine and relaxing the spinal muscles, which can relieve pain.

These chair backrests combined with lumbar support are commonly used for computer work or daily life that requires sitting for long periods of time, as sitting for long periods of time can put unnecessary pressure on the spine, which can cause pain or discomfort.

A chair is generally composed of a backrest, armrests, a seat, wheels, and other auxiliary devices. The armrest is for placing your arms and is an essential element for comfortable sitting. The seat is filled with memory foam, etc. to support the buttocks and thighs. The wheel is for using the chair when placed on the floor and usually has five wheels. Other auxiliary devices are located on the central axis connecting the seat and the floor to enable adjustment of the height of the chair. The mechanism is configured so that the height of the seat can be appropriately adjusted.

Meanwhile, the backrest is designed to support the curve of the spine and is filled with memory foam, just like the seat. In the case of a chair with lumbar support, the lumbar support is attached to the backrest, and the lumbar support is a support that supports the lower part of the spine and is located at the lower center of the backrest.

However, the backrest of a conventional chair is structured so that the lumbar support cannot be adjusted in height. Since the height adjustment function helps protect the health of the spine by adjusting the chair to the curve of the spine and reducing the pressure on the spine, it is necessary to design the lumbar support so that the height can be adjusted.

In addition, the lumbar support should correspond to the exact position of the user's body and should not shake or change position during use. However, if the connection structure is only made up of general bolts and nuts, the connection can easily become loose due to repeated use, so there is a problem that the support can shake or change position during use. In addition, if the structure is complex, it can easily interfere with the lower back area, which can cause a poor sitting comfort.

The purpose of this original proposal is to solve these existing problems.

The first purpose is to make the lumbar support adjustable in height to suit the user's body type, while making the structure compact and easy to adjust in height by fixing the position of the lumbar support in a vertically protruding joint structure.

In addition, in the original design, the lumbar support is combined so that the height can be adjusted up and down along the rectangular hole, so that the height of the lumbar support can be conveniently adjusted according to the user's body type.

The second purpose is to stably support the user's waist without shaking during use, as the lumbar support is firmly joined by the interlocking of the protrusions provided in the rectangular hole and the protrusions provided in the square protrusion of the lower frame.

In addition, the lumbar support is protruded forward by the protruding extension, so that it can support the hollow part of the user's waist, and the bolt is combined in the inner space of the protruding extension, so as not to cause interference.

The third purpose is to create a compact structure that does not cause interference by interlocking the unevenness of the square projection with the unevenness of the rectangular hole, so that the unevenness of the square projection is not exposed to the front of the arc-shaped hole by being caught by the step.

To this end, in this manuscript,

It consists of an upper frame, a lower frame joined to the upper frame at the edge, and a lumbar support joined to the central skeleton of the lower frame.

The lumbar support is connected by bolts to the holes formed in the central frame.

The center of the above lumbar support is provided with a protruding extension portion that is recessed from the surface and extends downward by a certain length, and an arc-shaped hole is provided on the lower surface of the protruding extension portion, which is formed long in the vertical direction and has upper and lower ends in the shape of an arc, and a rectangular hole with a somewhat smaller length and width is provided at the lower portion of the above arc-shaped hole so that a step is formed, and a number of unevennesses are formed in the vertical direction of the above rectangular hole.

A square projection protruding forward is provided at the location where the opening of the central skeleton is located, and protrusions are formed on the left and right sides of the square projection to engage with the protrusions of the rectangular hole.

The lumbar support is configured to be combined so that the length can be adjusted vertically along a rectangular hole, so that the height of the lumbar support can be conveniently adjusted according to the user's body shape.

The upper frame is composed of a frame portion forming an edge skeleton, and a mesh net that is fixed by the frame portion and forms a backrest portion.

The lower frame is composed of a frame portion that is joined to correspond to the frame portion of the upper frame, a central frame portion that is extended from the lower center of the frame portion by a certain length, and a connecting frame that is connected to the left and right sides of the frame portion to support the central frame portion.

The above lumbar support is configured to have a wide, gently curved surface to the left and right to support the user's waist, and has a number of holes on the surface to ensure good ventilation and reduce material costs.

When the unevenness of the square projection and the unevenness of the rectangular hole are interlocked and combined, the unevenness of the square projection is supported so as not to be exposed to the front of the arc-shaped hole by being caught on the step, and in this state, by placing a washer and connecting a bolt to the through hole of the square projection, the yoke support is connected to the central skeleton of the lower frame.

Additionally, the unevenness may be configured in a wave shape.

In the original design configured in this way, the lumbar support is connected so that the height can be adjusted up and down along the rectangular hole, so that the height of the lumbar support can be conveniently adjusted according to the user's body shape.

The lumbar support is firmly connected by interlocking the protrusions provided in the rectangular hole and the protrusions provided in the square protrusion of the lower frame, so that the user's waist can be stably supported without shaking during use.

In addition, the lumbar support is protruded forward by the protruding extension, so that it can support the hollow part of the user's waist, and the bolt is combined in the inner space of the protruding extension, so that it does not cause interference and has a compact structure.

When the unevenness of the square projection and the unevenness of the rectangular hole are interlocked and combined, the unevenness of the square projection is caught by the step and is not exposed in front of the circular hole, so that a compact structure that does not cause interference can be achieved.

Figure 1 is a front view of a chair backrest plate with a lumbar support combined according to the original design.
Figure 2 is a rear view of the chair backrest plate combined with the lumbar support according to the original design.
Figure 3 is a drawing showing the state in which the upper frame is separated from the chair backrest according to the original design.
Figure 4 is an enlarged drawing showing the structure in which the lumbar support is connected to the lower frame in the original design.
Figure 5 is a drawing showing the lumbar support separated from the original design.
Figure 6 is a drawing showing a structure in which a lumbar support is connected to the central skeleton of the lower frame so that it can move in the longitudinal direction of the hole.
Figure 7 is a drawing showing the lumbar support in Figure 6 separated.
Figure 8 is a drawing showing the lumbar support as viewed from above in the original manuscript.
Figure 9 is a drawing showing the lumbar support as viewed from below in the original manuscript.
Fig. 10 is a drawing showing the entire lumbar support in a smaller size than Fig. 9;
Figure 11 is an example of a chair using a chair backrest according to the original design.

Below, with reference to the attached drawings, an embodiment of the present invention is described in detail so that a person having ordinary knowledge in the technical field to which the present invention belongs can easily implement the present invention.

Meanwhile, the following description of the present invention is merely an example for structural or functional explanation. Therefore, the scope of rights of the present invention should not be construed as being limited by the examples described in the text.

For example, since the embodiments can be modified in various ways and can take various forms, the scope of the present invention should be understood to include equivalents that can realize the technical idea.

In addition, the purpose or effect presented in the present invention does not mean that a specific embodiment must include all of them or only such effects, and therefore, the scope of the rights of the present invention should not be understood as being limited thereby.

The meanings of the terms described in this invention should be understood as follows.

When it is said that a component is "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components in between. On the other hand, when it is said that a component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. Other expressions that describe the relationship between components, such as "between" and "directly between" or "adjacent to" and "directly adjacent to", should be interpreted similarly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present invention.

Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, the terms "comprises" or "have" and the like are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof, but should be understood to not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined otherwise herein.

Hereinafter, the present invention will be described in detail by describing a preferred embodiment of the present invention with reference to the attached drawings. The same reference numerals presented in each drawing represent the same components.

First, Figure 11 is an example of a chair using a chair backrest according to the original design.

A chair is generally composed of a backrest (1), armrests, a seat, wheels, and other auxiliary devices. The armrest is for placing the arm on and is an essential element for comfortable sitting. The seat is for supporting the buttocks and thighs and is filled with memory foam, etc. The wheel is for using the chair when placed on the floor and usually has five wheels. Other auxiliary devices are for adjusting the height of the chair and are located on the central axis connecting the seat and the floor. The device is configured so that the height of the seat can be appropriately adjusted.

Meanwhile, the backrest plate (1) is designed to support the curve of the spine, and in the case of a chair equipped with a lumbar support (4), the lumbar support (4) is connected to the backrest plate (1), and the lumbar support (4) is a support that supports the lower part of the spine and is located at the lower center of the backrest plate (1).

Figure 1 is a front view of a chair backrest plate with a lumbar support attached according to the present invention, Figure 2 is a back view of a chair backrest plate with a lumbar support attached according to the present invention, and Figure 3 is a drawing showing a state in which the upper frame is separated from the chair backrest plate according to the present invention.

The chair backrest plate combined with the lumbar support according to the original design is composed of an upper frame (2), a lower frame (3), and a lumbar support (4).

The upper frame (2) is composed of a frame (21) that forms an edge skeleton, and a mesh net (22) that is fixed by the frame (21) and forms a backrest.

The lower frame (3) is composed of a frame (31) that is joined to correspond to the frame (21) of the upper frame (2), a central skeleton (32) that is extended by a certain length from the lower center of the frame (31), and a connecting frame (33) that is connected to support the central skeleton (32) on the left and right sides of the frame (31).

The above connecting frame (33) and the central skeleton (32) can be configured in a “Y” shape to achieve force balance as in the illustrated example.

Since the upper and lower frames (2)(3) can be manufactured from plastic injection molding, the frame (31), the central skeleton (32), and the connecting frame (33) of the lower frame (3) are manufactured as an integral part.

The upper and lower frames (2)(3) are assembled as shown in Fig. 2 by overlapping each of the frame parts (21)(31) with bolts penetrating the holes (23)(34) provided in each frame part (21)(3).

Meanwhile, the lumbar support (4) is connected to the central skeleton (32) of the lower frame (3).

The lumbar support (4) is formed with a wide, gently curved surface to the left and right to support the user's waist, and is configured with a number of holes (46) on the surface to ensure good ventilation and reduce material costs.

FIG. 4 is an enlarged view of the structure in which the lumbar support is coupled to the lower frame in the original design, FIG. 5 is a view showing the lumbar support separated from the original design, FIG. 6 is a view showing the structure in which the lumbar support is coupled to the central skeleton of the lower frame so as to be movable in the longitudinal direction of the hole, FIG. 7 is a view showing the state in which the lumbar support is separated from FIG. 6, FIG. 8 is a view showing the state in which the lumbar support is viewed from above in the original design, FIG. 9 is a view showing the state in which the lumbar support is viewed from below in the original design, and FIG. 10 is a view showing the entire lumbar support smaller than FIG. 9,

The lumbar support (4) is connected to the hole (35) formed in the central frame (32) by a bolt (5).

In the center of the above lumbar support (4), a protruding extension part (41) is provided that is recessed from the surface and extends downward by a certain length.

The lower surface of the above protruding extension portion (41) is provided with an arc-shaped hole (42) that is formed long in the vertical direction and has an arc shape at the upper and lower ends, and a rectangular hole (43) that is somewhat smaller in length and width is provided so that a step (44) is formed at the lower portion of the above arc-shaped hole (42), and a number of protrusions (45) are formed in the vertical direction of the above rectangular hole (43). (See Fig. 9)

Meanwhile, a square projection (36) protruding forward is provided at the location where the hole (35) of the central skeleton (32) is located, and a protrusion (37) is formed on the left and right sides of the square projection (36) to engage with the protrusion (45) of the rectangular hole (43). (See Fig. 7)

The above-mentioned unevenness (45)(37) is configured in a wave shape in the illustrated example, but may be transformed into various shapes such as a sawtooth shape.

The lumbar support (4) is intended to support the user's lower back, and is extended forward by a protruding extension part (41) located in the center, so that it can stably support the sunken area of the lower back.

Since the protrusion (45) formed in the rectangular hole (43) of the above lumbar support (4) is interlocked with the protrusion (37) formed in the square protrusion (36) of the above central frame (32), once combined, a firm combined state can be maintained without shaking.

Since the unevenness (37) of the above square protrusion (36) can be combined with the unevenness (45) of the above rectangular hole (43) at any height, the height of the lumbar support (4) can be adjusted to suit the user's body shape.

In addition, the lower surface of the protruding extension part (41) is provided with an arc-shaped hole (42) that is formed long in the vertical direction and has an arc shape at the upper and lower ends, and a rectangular hole (43) that is somewhat smaller in length and width is provided at the lower portion of the arc-shaped hole (42) so that a step (44) is formed,

When the unevenness (37) of the square projection (36) and the unevenness (45) of the rectangular hole (43) are interlocked and combined, the unevenness (37) of the square projection (36) is supported so as not to be exposed to the front of the arc-shaped hole (42) by being caught on the step (44), and in this state, by placing a washer (6) and connecting the bolt (5) to the through hole (35) of the square projection (36), the yoke support (4) is connected to the central skeleton (32) of the lower frame (3).

At this time, the washer (6) must be hung on the surface of the above-mentioned arc-shaped hole (42), so its outer diameter must be larger than the width of the above-mentioned arc-shaped hole (42), and its inner diameter must be large enough for the bolt (5) to penetrate through.

In this way, in the original design, the lumbar support (4) is connected so that the length can be adjusted up and down along the rectangular hole (43), so that the height of the lumbar support (4) can be conveniently adjusted according to the user's body shape.

Since the lumbar support (4) is firmly connected by interlocking the protrusions (45) provided in the rectangular hole (43) and the protrusions (37) provided in the square protrusion (36) of the lower frame (3), the user's waist can be stably supported without shaking during use.

In addition, the lumbar support (4) is protruded forward by the protruding extension (41), so that it can support the sunken area of the user's waist, and the bolt (5) is combined in the internal space of the protruding extension (41), so that it does not cause interference and has a compact structure.

When the unevenness (37) of the square protrusion (36) and the unevenness (45) of the rectangular hole (43) are interlocked and combined, the unevenness (37) of the square protrusion (36) is caught by the step (44) and is not exposed in front of the circular hole (42), so that a compact structure that does not cause interference can be achieved.

As such, the present invention is not limited to the described embodiments, and it is obvious to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Accordingly, such modifications or variations should be considered to fall within the scope of the claims of the present invention.

1: Backrest plate 2: Upper frame
3: Lower frame 4: Lumbar support
5: Bolt 6: Washer
21: Border 22: Mesh net
23 : Perforation 31 : Border
32: Central skeleton 33: Connecting frame
34, 35: perforation 36: square protrusion
37, 45: bump 41: protruding kidney
42: Circular hole 43: Rectangular hole
44 : Single chin

Claims (6)

It consists of an upper frame (2), a lower frame (3) joined to the upper frame (2) at the edge, and a lumbar support (4) joined to the central skeleton (32) of the lower frame (3).
The lumbar support (4) is connected to the hole (35) formed in the central frame (32) by a bolt (5).
The center of the above lumbar support (4) is provided with a protruding extension part (41) that is recessed from the surface and extended downwardly by a certain length, and an arc-shaped hole (42) that is formed long in the vertical direction and has an upper and lower end in an arc shape is provided on the lower surface of the above protruding extension part (41), and a rectangular hole (43) that is somewhat smaller in length and width so that a step (44) is formed at the lower portion of the above arc-shaped hole (42), and a number of unevennesses (45) are formed in the vertical direction of the above rectangular hole (43).
A square projection (36) protruding forward is provided at the location where the hole (35) of the central skeleton (32) is located, and a protrusion (37) is formed on the left and right sides of the square projection (36) to engage with the protrusion (45) of the rectangular hole (43).
A chair backrest plate with a combined lumbar support, characterized in that the lumbar support (4) is combined so that the length can be adjusted in the vertical direction along a rectangular hole (43), and the height of the lumbar support (4) can be conveniently adjusted according to the user's body type.
In paragraph 1,
A chair backrest plate with a combined lumbar support, characterized in that the upper frame (2) is composed of a frame (21) forming an edge skeleton, and a mesh net (22) fixed by the frame (21) and forming a backrest.
In paragraph 1,
A chair backrest plate with a combined lumbar support, characterized in that the lower frame (3) is composed of a frame (31) that is coupled to correspond to the frame (21) of the upper frame (2), a central frame (32) that is extended by a certain length from the lower center of the frame (31), and a connecting frame (33) that is connected to support the central frame (32) on the left and right sides of the frame (31).
In paragraph 1,
The above lumbar support (4) is formed into a wide, gently curved surface to the left and right to support the user's lower back, and is provided with a number of holes (46) on the surface to ensure good ventilation and reduce material costs. A chair backrest plate combined with a lumbar support.
In paragraph 1,
A chair backrest plate with a lumbar support, characterized in that when the unevenness (37) of the square protrusion (36) and the unevenness (45) of the rectangular hole (43) are interlocked and combined, the unevenness (37) of the square protrusion (36) is supported by being caught on the step (44) so as not to be exposed to the front of the arc-shaped hole (42), and in this state, by placing a washer (6) and combining the bolt (5) with the through-hole (35) of the square protrusion (36), the lumbar support (4) is combined with the central frame (32) of the lower frame (3).
In paragraph 1,
A chair backrest plate with a lumbar support member, characterized in that the above-mentioned protrusions (45)(37) are formed in a wave shape.