KR101101872B1 - Apparatus for supporting lumbar vertebrae for chair - Google Patents

Abstract

PURPOSE: A lumbar supporting device of a chair is provided to maintain the lumbar vertebra and waist support state. CONSTITUTION: A lumbar supporting device of a chair comprises a fixed frame, a supporting pad, and a height adjuster. The supporting pad is equipped in the fixed frame and supports the waist and lumbar vertebra. The height adjuster ascends and descends the supporting pad. The supporting pad comprises a guide member(21), an extending member(22), a support plate member(23), and a binding band member(26). The support plate part supports the waist around the lumbar vertebra. A reinforcing member(40) is formed between the fixed frame and supporting pad.

Description

Lumbar support device of chair {APPARATUS FOR SUPPORTING LUMBAR VERTEBRAE FOR CHAIR}

The present invention relates to a lumbar support device for a chair, and more particularly, to change the shape of the support pad supporting the lumbar spine and the waist so that it can be easily deformed according to the position of the force to provide maximum comfort to the user, and support pad It relates to a lumbar support device of the chair that can maintain the lumbar and lumbar support state by allowing the lower and lowered along the curved lumbar spine.

Conventional chairs support the waist by protruding a cushion to the waist position in order to comfortably support the user's waist, but such a waist support cannot be adapted to the user's body because the protrusion position is not adjusted. .

Thus, a structure has been proposed in which the lumbar support is screwed to the support coupled to the backrest to move up and down by turning the adjustment knob.

Conventional chair lumbar support has a problem that it gives a feeling of pressure during the movement of the waist because it is rigid (硬 質) in a state mounted on the back. Therefore, there is a need for improvement.

The present invention has been made in order to improve the above problems, forming a support pad for supporting the lumbar spine and waist in a soft, through the slit hole and incision hole in the support pad, by changing the shape of the support pad to the waist The present invention relates to a lumbar support device of a chair for providing maximum comfort to a user by being easily deformed according to the position of the force.

In addition, the present invention relates to a lumbar support device of a chair for maintaining the lumbar and lumbar support by allowing the support pad to be lifted and lowered along the curved lumbar spine.

A lumbar support device for a chair according to an embodiment of the present invention includes: a fixed frame formed on a back frame, a support pad provided on the fixed frame to support a back and lumbar spine, and moving the support pad up and down in the lumbar direction And including a height adjustment unit for adjusting the height, the support pad, a guide surface member which is guided up and down in contact with the fixed frame, an extension member which is formed to be bent in opposite directions to each other extending in the waist direction on both sides of the guide surface member, the And a support plate member formed in a plate shape at each end of the extension member to support the waist on both sides with respect to the lumbar spine, and a constrained band member formed in a band shape to connect and restrain the support plate member from each other.

The support plate member is preferably extended to bend in the waist direction from the extension member, respectively.

The support plate member is preferably through the slit hole.

The support plate member is preferably through the cutting hole so that the outer side is larger than the inner strain.

The height adjusting part includes a slot hole part which is rectangularly perforated in the fixed frame, a gripper having a rod guided into the slot hole part, and the gripper forcibly adjusting the support pad by an external force. And a binding member for binding the pad.

The fixed frame includes a mounting member formed in a rectangular shape along the moving direction of the gripper and passing through the slot hole portion, and a connecting member detachably coupled to a corresponding backrest frame extending from both sides of the mounting member. .

The installation member is preferably formed to be curvature so that the support pad is continuously contacted along the curved lumbar spine when lifting.

Preferably, a reinforcing member is provided between the fixed frame and the support pad.

The reinforcing member is provided with a roller member on both sides with respect to the lifting direction, and the fixing frame is preferably formed in the unevenness to guide the roller member for forced lifting of the reinforcing member.

As described above, the lumbar support device of the chair according to the present invention, unlike the prior art forms a support pad for supporting the lumbar spine and waist soft, through the slit hole and the incision hole in the support pad, the shape of the support pad It can be easily deformed according to the position of the force by the waist by providing a maximum comfort to the user.

In addition, the present invention can maintain the lumbar and lumbar support state by allowing the support pad to move up and down along the curved lumbar spine.

1 is a perspective view of the lumbar support device for a chair according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of the lumbar support device of the chair according to an embodiment of the present invention.
Figure 3 is a rear exploded perspective view of the lumbar support device for a chair according to an embodiment of the present invention.
Figure 4 is a cross-sectional view of the lumbar support device for a chair according to an embodiment of the present invention.
5 and 6 are cross-sectional views of the raised and lowered state of the lumbar support device of the chair according to an embodiment of the present invention.
Figure 7 is a state diagram showing a state in which the bending force when the bearing force is concentrated on the upper side of the support pad according to an embodiment of the present invention.
8 and 9 are state diagrams showing a state in which the support force is bent at the left side of the support pad according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the lumbar support device for a chair according to the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a perspective view of the lumbar support device for a chair according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the lumbar support device for a chair according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention Is a rear exploded perspective view of the lumbar support device of the chair according to.

Figure 4 is a cross-sectional view of the lumbar support device for a chair according to an embodiment of the present invention.

5 and 6 are cross-sectional views of the raised and lowered state of the lumbar support device of the chair according to an embodiment of the present invention.

7 is a state diagram showing a state in which the support force is bent on the upper side of the support pad according to an embodiment of the present invention, Figures 8 and 9 are the support force is concentrated on the left side of the support pad according to an embodiment of the present invention It is a state diagram showing the bent state.

1 to 4, the lumbar support device of a chair according to an embodiment of the present invention includes a fixing frame 10, a support pad 20, and a height adjusting unit 30.

The fixed frame 10 is formed in the back frame 2, guides the height adjustment of the support pad 20, and serves to support the support pad 20.

In particular, the fixed frame 10 is provided in the backrest frame 2, it is installed across the inside of the backrest frame (2). At this time, the installation position of the fixed frame 10 with respect to the back frame 2 is not limited.

And, the support pad 20 is connected to the fixed frame 10 serves to support the waist and lumbar (腰椎). At this time, the support pad 20 is preferably formed as wide as possible to support a wide contact across the waist and lumbar.

In addition, the support pad 20 is preferably made of a soft portion in contact with the waist or back so that even if the waist or back moves to support the back.

In particular, the support pad 20 is formed to fully support in conjunction with the movement of the waist and lumbar vertebrae.

For example, the support pad 20 includes a guide surface member 21, an extension member 22, a support plate member 23, and a restraint band member 26.

Guide surface member 21 serves to be guided up and down in contact with the fixed frame (10). In particular, the guide surface member 21 is made of a hard (않도록) in contact with the fixed frame 10 so as not to be damaged or deformed when forced up and down by an external force. Of course, the guide surface member 21 is formed to be thicker than the extension member 22, the support plate member 23 and the restraint band member 26, it is preferred to be naturally hard. The guide surface member 21 can be modified in various shapes.

And, the extending member 22 extends in the waist direction on both sides of the guide surface member 21, respectively. In particular, the extension member 22 is bent to extend on both sides opposite to each other with respect to the lifting direction of the guide surface member 21. This is to comfortably support the waist while lying in opposite directions with respect to the pressing of the waist on both sides with respect to the lumbar spine. At this time, since the extension member 22 is elastically curved, it serves to collect the waist on both sides in the lumbar direction.

In addition, the extension member 22 is formed to be bent at the same curvature p from the guide surface member 21. This is to make it possible to support the waist stably by equalizing the height of the support plate member 23, and to avoid discomfort in the waist. Of course, the extension member 22 may be formed in a variety of shapes, it is preferable that the guide surface member 21 is formed integrally.

In addition, the support plate member 23 is formed in a plate shape at each end of the extension member 22 serves to directly support the waist of both sides on the basis of the lumbar spine. The support plate member 23 is formed in a plate shape in order to increase the contact area supporting the waist.

The pair of support plate members 23 may be formed to collect in the lumbar direction while supporting the waist on both sides of the lumbar spine.

Therefore, the support plate member 23 extends to bend at a predetermined angle α with respect to the line parallel to the bottom surface of the guide surface member 21, respectively. That is, the support plate members 23 extend from each of the extension members 22 to be bent at a predetermined angle α in the waist direction.

Accordingly, the pair of support plate members 23 serve to wrap and support the waist. At this time, the support plate member 23 is made of a soft (軟 質) to be easily deformed according to the movement of the waist. This is to avoid burdening the waist as the support plate member 23 is easily deformed according to the moving waist.

In addition, the support plate member 23 is spaced apart from the guide surface member 21 by the straight line distance L of the extension member 22. Thus, the extension member 22 and the support plate member 23 has a large allowable deformation amount due to the movement of the waist. Accordingly, even if the waist moves a lot, the support plate member 23 and the extension member 22 can be supported as comfortably as possible so as not to overdo the waist. Of course, the support plate member 23 is preferably formed integrally with the corresponding extension member (22).

On the other hand, the support plate member 23 is formed on the corresponding extension member 22, when the pair of support plate member 23 is formed so as not to restrain each other, any one of the support plate corresponding to the region where the movement of the waist is concentrated As only the member 23 has a large deformation amount, the waist may be uncomfortable by the other support plate member 23 having a relatively small deformation amount.

Thus, the pair of support plate members 23 is preferably linked to each other and deformed in the same direction.

Accordingly, a band-shaped restriction band member 26 is provided to connect and restrain the support plate members 23.

The restraint band member 26 serves to prevent the independent movement of each of the support plate members 23 connected to the corresponding extension member 22 to form a free end by connecting the edges of the support plate members 23 facing each other and restraining each other. do.

That is, as the pair of support plate members 23 are interlocked and deformed by the restraint band member 26, the support plate members 23 connected to each other are moved together in the direction of movement of the waist to always support the waist. . At this time, even if the support plate member 23 is deformed by the curved extension member 22 and the inclined support plate member 23, the waist is wrapped as much as possible.

Of course, the restriction band member 26 is not limited to the number and shape, it is preferably formed integrally on the edge of the support plate member (23).

On the other hand, as the lumbar spine moves from the waist to the back, the lumbar spine is more flexed outwards. Thus, as the waist is folded back, the upper side of the support plate member 23 is concentrated.

At this time, since the support plate member 23 has a plate shape, the support plate member 23 may cause discomfort due to the back of the waist or the turn along the other trajectory of the lumbar spine.

Therefore, it is preferable that the support plate members 23 pass through the slit holes 24, respectively. That is, the support plate member 23 passes through the slit hole 24 in the horizontal direction corresponding to the direction perpendicular to the direction of the lumbar spine. At this time, the slit hole 24 is not limited to the formation position, but is preferably formed in the central portion with respect to the height direction of each support plate member 23. In addition, it is preferable that the pair of support plate members 23 form the slit holes 24 at the same position.

Of course, the slit hole 24 is through the support plate member 23 in a variety of shapes, it is preferably formed in parallel with the restraint band member 26.

Therefore, as shown in FIG. 7, when the seated person leans back, the lower side is bent backward by a predetermined angle β from the initial state by the pushing force with respect to the slit hole 24 of each support plate member 23. In addition, the upper side is bent backward by a predetermined angle (σ) which is more than a predetermined angle (β) from the initial state by the pushing force on the basis of the slit hole 24 of each support plate member 23. Thus, the support plate member 23 by varying the amount of deformation in accordance with the bending of the waist to be folded back, the waist can be comfortably folded.

Of course, the pair of support plate members 23 are bent in the same way, and in conjunction with this, the pair of extension members 22 are also deformed in the same direction.

In addition, when the movement of the waist is concentrated on one side, the degree of bending of one side of one support plate member 23 is greater than the degree of bending the other side. Thus, while the waist is concentrated on one side, one side of the support plate member 23 is concentrated.

At this time, since the support plate member 23 has a plate shape, it causes inconvenience due to the movement along the other trajectory of the waist when one side of the waist is concentrated.

Thus, the support plate member 23 is preferably through the cutting hole 25 so that the outer side is larger than the inner strain. That is, one support plate member 23 passes through the incision hole 25 so as to bend both sides with respect to the center in the axial direction of the restraint band member 26. At this time, the cutting hole 25 does not limit the formation position or shape. In addition, it is preferable that the pair of support plate members 23 form the cutting holes 25 at the same position. For convenience, the incision hole 25 is shown to be formed in a '⊂' shape that is open to face each other in the pair of support plate member 23. In addition, the incision hole 25 is to be formed on the upper side and the lower side with respect to the slit hole 24 in the support plate member 23.

Therefore, as shown in FIGS. 8 and 9, when the seated person is concentrated in the waist of one side of the lumbar spine, the other side of the supporting plate member 23 is pushed by a predetermined angle from the initial state by the pushing force. bend backward by (δ). In addition, one side of the cutting hole 25 of each support plate member 23 is bent backward by a predetermined angle λ, which is more than a predetermined angle δ from the initial state by the pushing force. Thus, the support plate member 23 by varying the amount of deformation in accordance with the bending of the waist moving in the lateral direction, the waist is able to move comfortably supported.

Of course, the pair of support plate members 23 are bent in the same way, and in conjunction with this, the pair of extension members 22 are also deformed in the same direction.

Here, 'the other side based on the cutting hole 25' means the other edge of the support plate member 23 facing the guide surface member 21, and 'one side based on the cutting hole 25' is the guide surface member 21. Means one side edge of the support plate member 23 corresponding to the direction opposite to the direction toward.

On the other hand, the support pad 20 serves to support the concave portion and the waist that enters the entire lumbar spine, it is preferred to vary depending on the height of the seated or seated.

Thus, the support pad 20 is preferably installed to be able to move up and down along the lumbar spine, and, accordingly, the height adjustment unit 30 is provided.

The height adjustment part 30 serves to adjust the height by moving the support pad 20 upward and downward in the lumbar direction, and includes a slot hole part 32, a gripper 34, and a binding member 36.

The slot hole portion 32 is rectangular through the fixing frame 10. At this time, the rectangle means that the fixing frame 10 is formed long along the lumbar spine direction. The slot hole portion 32 serves to guide the lifting and lowering of the support pad 20 and to set the lifting allowance range of the support pad 20.

The gripper 34 has a rod 35 which is inserted into the slot hole portion 32 and guided.

That is, the gripper 34 is easily lifted up and down by hand as it is connected to the support pad 20, and the support pad 20 is linked to the gripper 34 to move up and down together.

At this time, the gripper 34 has a rod 35 fitted into the slot hole portion 32. The rod 35 is guided to the slot hole 32 to move up and down. The rod 35 is applicable to various shapes, and is not limited to the number. And, the rod 35 is preferably formed integrally with the gripper 34. In addition, the gripper 34 can be modified into various shapes.

In addition, the support pad 20 should be engaged with the gripper 34. This is to allow the support pad 20 to move together when the gripper 34 is forcibly moved.

Thus, the binding member 36 binds the rod 35 and the support pad 20. Here, the binding member 36 is preferably a mechanical fastening element such as a bolt.

At this time, the binding member 36 is preferably inserted into the support pad 20 and the fixed frame 10 and then screwed to the rod 35 of the gripper 34. As a result, the support pad 20 and the gripper 34 are forced up and down while being in close contact with the fixed frame 10.

Of course, the support pad 20 may protrude from the rod 35, and the rod 35 may be installed to be prevented from being separated from the slot hole part 32 by the binding member 36 after being inserted into the slot hole part 32. .

In this case, the binding member 36 is in close contact with the rear side of the fixed frame 10, and the support pad 20 is in close contact with the front side of the fixed frame 10.

On the other hand, the fixed frame 10 is preferably formed as long as possible within the range of the hole through which the slot hole 32 formed in a rectangular shape along the lumbar spine. This is in order to support the waist of various seated persons as the support pad 20 by maximizing the lifting distance of the support pad 20 within the range possible. "Possible range" means within the vertical distance of the backrest frame 2 to the maximum.

Therefore, the fixed frame 10 includes an installation member 12 and a connection member 14.

The installation member 12 is formed in a rectangular shape along the moving direction of the gripper 34 and passes through the slot hole part 32. Accordingly, the rod 35 of the gripper 34 moves up and down along the slot hole portion 32 of the installation member 12, and the guide surface member 21 of the support pad 20 is installed at the installation member 12. . Of course, the installation member 12 can be modified in various shapes.

Then, the connecting member 14 is detachably coupled to the backrest frame 2 corresponding to each other by extending from both sides of the installation member 12.

That is, the connecting member 14 is detachably connected to the backrest frame 2 and serves to fix the position of the installation member 12.

At this time, one side of each of the connection member 14 is integrally formed in the installation member 12, the other side of each of the connection member 14 is separably fixed to the back frame frame 2 as a fastening member 15. Here, the fastening member 15 is a mechanical fastening element such as a bolt.

Of course, the installation member 12 and the connection member 14 may be made of the same height, or may be formed in different heights.

In particular, the installation member 12 is preferably formed to be curvature so that the support pad 20 is in continuous contact along the curved lumbar spine.

That is, the installation member 12 is formed to be bent in the same way as the curvature of the corresponding lumbar spine, the support pad 20 is raised and lowered along the installation member 12 by the gripper 34, the support pad 20 Is supported in continuous contact with the lumbar spine during ascent.

In addition, when the binding member 36 directly binds the installation member 12 and the support pad 20 of the fixed frame 10, the installation member 12 and the support pad 20 are damaged or weak in durability.

Thus, the reinforcing member 40 is provided between the installation member 12 and the support pad 20 of the fixed frame 10. The reinforcing member 40 is made of a metal material and serves to reinforce when the installation member 12 and the support pad 20 are bound. Of course, the reinforcing member 40 can be modified in various shapes.

On the other hand, when the binding force of the binding member 36 which binds the gripper 34 and the support pad 20 through the slot hole 32 is weakened, the support pad 20 is arbitrarily lowered.

Thus, the reinforcing member 40 is provided with roller members 52 on both sides with respect to the lifting direction, and the fixed frame 10 guides the roller member 52 for forced lifting of the reinforcing member 40. It is preferable to form the unevenness 54.

That is, the roller member 52 is rotated along the corresponding concave-convex 54 and forced up and down, so that even if the binding force of the binding member 36 is weakened by a predetermined amount, the support pad 20 is not arbitrarily lowered. Of course, the roller member 52 may be formed integrally with the reinforcing member 40 so as not to rotate.

The roller member 52 is rotatably mounted to the reinforcing member 40 by various methods, and is not limited to the number.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

2: back frame 10: fixed frame
12: mounting member 14: connecting member
15: fastening member 20: support pad
21: guide surface member 22: extension member
23: support plate member 24: slit hole
25: incision hole 26: restraint band member
30: height adjustment part 32: slot hole part
34: Gripper 35: Rod
36: binding member 40: reinforcing member
52: roller member 54: irregularities

Claims (9)

A fixed frame formed on the backrest frame;
A support pad provided at the fixing frame to support a waist and a lumbar spine; And
It includes a height adjusting unit for moving the support pad in the lower and lower direction in the lumbar direction to adjust the height,
The support pad, the guide surface member which is guided up and down in contact with the fixed frame;
Extending members extending from both sides of the guide surface member in a waist direction and bent in opposite directions;
A support plate member formed in a plate shape at each end of the extension member to support waists on both sides based on the lumbar spine; And
It includes a restraining band member formed in a band shape to connect the support plate member by restraining each other,
A reinforcing member is provided between the fixed frame and the support pad.
The reinforcing member has a roller member on both sides with respect to the lifting direction;
The fixed frame is a lumbar support device for a chair, characterized in that for forming a concave-convex guide the roller member for forced lifting of the reinforcing member.
The method of claim 1,
The support plate member, the lumbar support device of the chair, characterized in that each extending from the extending member to bend in the waist direction.
3. The method according to claim 1 or 2,
The support plate member, the lumbar support device of the chair, characterized in that through each slit hole.
3. The method according to claim 1 or 2,
The support plate member, the lumbar support device of the chair, characterized in that through the incision hole so that the outer side is greater than the inner strain.
The method of claim 1,
The height adjustment unit, the slot hole portion that is rectangular through the fixed frame;
A gripper having a rod guided through the slot hole; And
Lumbar support device for a chair, characterized in that it comprises a binding member for binding the rod and the support pad so that the gripper forcibly adjusts the support pad by an external force.
The method of claim 5, wherein the fixed frame,
An installation member formed in a rectangular shape along the moving direction of the gripper and passing through the slot hole portion; And
Lumbar support device for a chair, characterized in that it comprises a connecting member detachably coupled to the corresponding backrest frame extending from both sides of the installation member.
The method of claim 6,
The installation member is a lumbar support device of the chair, characterized in that the support pad is formed to be curvature continuously in contact with the curved lumbar spine when lifting. delete delete

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