KR102500627B1 - Folding seat - Google Patents

Abstract

The present invention relates to a folding seat in which a buttock support can be advanced and folded relative to the backrest, comprising: a backrest; hip support; and a forward mode in which the hiprest is moved forward relative to the backrest so that the buttockrest can be folded in close contact with the backrest, and a folding mode in which the buttockrest is folded upward in the direction of the backrest simultaneously or sequentially. A joint device performed as; may include.

Description

Folding seat {Folding seat}

The present invention relates to a folding seat, and more particularly, to a folding seat in which a buttock support can be advanced and folded based on a backrest.

In general, folding seats installed in various vehicles such as cars, vans, buses, ships, and airplanes can be folded into a backrest when not in use, and are very flexible to perform a folding mode between the hiprest and the backrest. A joint device of a simple hinge structure may be applied.

However, since such a conventional folding seat has a simple hinge structure, it can perform only a simple folding mode in which the hiprest is rotated and folded to the backrest. There were many structural problems such as shaking or rattling due to lack of shape retention or fixing power.

In addition, the conventional folding seat is a completely fixed method in which the backrest is completely fixed to the installation surface or wall when the backrest is installed inclined for the convenience of the seated person, so the back space of the inclined backrest cannot be utilized and space is wasted. There was a problem.

The present invention is to solve various problems, including the above problems, to simultaneously or sequentially perform a forward mode in which the hiprest is advanced with respect to the backrest and a rotation mode in which the hiprest is rotated with respect to the backrest. By using a link-type joint device or a guide-type joint device that can be folded, the adhesion between the hip support and the back support can be greatly increased, and durability is greatly improved because it is structurally very solid by increasing the shape retention or fixation power during folding or unfolding. It is an object of the present invention to provide a folding seat that can greatly improve space utilization because the backrest can be erected on an installation surface or a wall when folded using an interlocking link to utilize the back space of the inclined backrest. However, these tasks are illustrative, and the scope of the present invention is not limited thereby.

A folding seat according to the spirit of the present invention for solving the above problems includes a backrest; hip support; and a forward mode in which the hiprest is moved forward relative to the backrest so that the buttockrest can be folded in close contact with the backrest, and a folding mode in which the buttockrest is folded upward in the direction of the backrest simultaneously or sequentially. A joint device performed as; may include.

In addition, according to the present invention, the joint device may be a link type joint device composed of a plurality of links installed to cross at least a portion in an X shape so that the forward mode and the folding mode can be simultaneously performed.

In addition, according to the present invention, the link type joint device, the first link is fixed to one side of the backrest, the 1-1 hinge axis and the 1-2 hinge axis is formed; a second link fixed to one side of the hip support and having a 2-1 hinge axis and a 2-2 hinge axis; a third link connected to the 1-1 hinge axis of the first link and the 2-2 hinge axis of the second link; and a fourth link connected to the 1-2 hinge axis of the first link and the 2-1 hinge axis of the second link so as to cross the third link in an X shape. can

Further, according to the present invention, the link-type joint device may further include an interlocking link that interlocks with the fourth link in the folding mode to adjust an angle of the backrest in a direction in which the backrest is erected.

Further, according to the present invention, the interlocking link may include a fifth link connected to a 5-1 hinge axis extending from the fourth link by an extension distance beyond the 2-1 hinge axis; and a sixth link fixed to an installation surface or a wall and having a 6-1 hinge axis connected to the fifth link.

Further, according to the present invention, the interlocking link may further include a fixed link connected to the 6-2 hinge shaft of the sixth link and fixed to the backrest.

Further, according to the present invention, the joint device may be a guide type joint device in which at least a part of the guide groove is formed so that the forward mode is performed and then the folding mode is sequentially performed.

In addition, according to the present invention, the guide-type joint device, the shaft protrusion formed on the hip support; a cam protrusion formed on the hip support and spaced apart from the shaft protrusion by a distance; And fixed to the backrest, in the forward mode, the hiprest as a whole is advanced in a direction away from the backrest, and then in the folding mode, the hiprest is rotated based on the shaft protrusion to be folded to the backrest. and a guide bracket having a first guide groove corresponding to the shaft protrusion and a second guide groove corresponding to the cam protrusion.

In addition, according to the present invention, the first guide groove portion has a long groove shape formed long in the forward direction, and the second guide groove portion includes a straight groove portion formed long in the forward direction; and an arc groove portion connected to the linear groove portion and formed in an arc shape.

In addition, according to the present invention, the straight groove portion is disposed on the center line of the longitudinal direction of the first guide groove portion, and may be formed to have the same length as the length of the first guide groove portion.

In addition, according to the present invention, the guide-type joint device includes a first elastic spring installed between the shaft protrusion and the guide bracket and having a restoring force acting in a direction in which the hip rest is moved backward with respect to the back rest. can do.

Further, according to the present invention, the guide-type joint device includes a second elastic spring installed between the cam protrusion and the guide bracket and having a restoring force acting in a direction in which the hip rest is folded based on the back rest. can do.

According to some embodiments of the present invention made as described above, a link capable of simultaneously or sequentially performing a forward mode in which the hiprest is advanced with respect to the backrest and a rotation mode in which the hiprest is rotated with respect to the backrest By using a type joint device or a guide-type joint device, the adhesion between the hip support and the back support can be greatly increased when folded, and durability can be greatly improved because it is structurally very solid by increasing the shape retention or fixation power when folded or unfolded. When folded using interlocking links, the backrest can stand on the installation surface or wall to utilize the space behind the inclined backrest, which has the effect of greatly improving space utilization. Of course, the scope of the present invention is not limited by these effects.

1 is a perspective view showing an unfolded state of a folding sheet according to some embodiments of the present invention.
2 is a perspective view showing a folded state of the folding sheet of FIG. 1;
3 to 5 are side views illustrating a folding process of the folding sheet of FIG. 1 step by step.
6 is a perspective view showing an unfolded state of a folding sheet according to some other embodiments of the present invention.
FIG. 7 is an enlarged perspective view of a portion A of the folding sheet of FIG. 6;
8 is a perspective view showing a folded state of the folding sheet of FIG. 6;
FIG. 9 is an enlarged perspective view of part B of the folding sheet of FIG. 8;
10 to 13 are side views illustrating a folding process of the folding sheet of FIG. 6 step by step.

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

The embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art, and the following examples may be modified in many different forms, and the scope of the present invention is as follows It is not limited to the examples. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the spirit of the invention to those skilled in the art. In addition, the thickness or size of each layer in the drawings is exaggerated for convenience and clarity of explanation.

Terms used in this specification are used to describe specific embodiments and are not intended to limit the present invention. As used herein, the singular form may include the plural form unless the context clearly indicates otherwise. Also, when used herein, "comprise" and/or "comprising" specifies the presence of the recited shapes, numbers, steps, operations, elements, elements, and/or groups thereof. and does not exclude the presence or addition of one or more other shapes, numbers, operations, elements, elements and/or groups.

Hereinafter, embodiments of the present invention will be described with reference to drawings schematically showing ideal embodiments of the present invention. In the drawings, variations of the depicted shape may be expected, depending on, for example, manufacturing techniques and/or tolerances. Therefore, embodiments of the inventive concept should not be construed as being limited to the specific shape of the region shown in this specification, but should include, for example, a change in shape caused by manufacturing.

Hereinafter, folding sheets according to various embodiments of the present invention will be described in detail with reference to the drawings.

1 is a perspective view showing a folded state of the folding sheet 100 according to some embodiments of the present invention, FIG. 2 is a perspective view showing a folded state of the folding sheet 100 of FIG. 1, and FIG. 3 is a perspective view of FIG. It is a side view of the folding sheet 100.

First, as shown in FIGS. 1 to 3, the folding seat 100 according to some embodiments of the present invention includes a backrest 10, a hip support 20, and joints installed between them. device may be included.

For example, as shown in FIGS. 1 to 3, the backrest 10 is a part corresponding to the seated person's back, and is made of a hard material such as plastic or metal, or a soft cloth or synthetic/natural leather in a frame or a sponge or Various cushion structures in which urethane or springs are installed may be applied.

The shape or type of the backrest 10 is not necessarily limited to the drawings, and various shapes or types of seat structures corresponding to the seated person's back may be applied.

In addition, for example, as shown in FIGS. 1 to 3, the hip support 10 is a part corresponding to the seated person's buttocks, and is made of a hard material such as plastic or metal, or a soft cloth or synthetic/natural leather frame. Various cushion structures in which sponges, urethanes, or springs are installed may be applied.

The shape or type of the hip support 10 is not necessarily limited to the drawing, and various shapes or types of seat structures corresponding to the seated person's back may be applied.

In addition, for example, the joint device is a kind of multi-purpose installed between the backrest 10 and the hiprest 20 so that the hiprest 20 can be folded in close contact with the backrest 10. A joint device may be applied.

In particular, the joint device has a forward mode in which the hip rest 20 moves forward with respect to the back rest 10, and a forward mode in which the hip rest 20 is folded upward in the direction of the back rest 10. A kind of link combination that can simultaneously perform folding mode can be applied.

More specifically, for example, as shown in FIGS. 1 to 3, the joint device includes at least four links installed so that at least a part crosses in an X shape so that the forward mode and the folding mode can be performed simultaneously. It may be a link type joint device 30 composed of (31) (32) (33) (34).

Here, as shown in FIGS. 1 to 3, the link type joint device 30 is fixed to one side of the backrest 10, and the 1-1 hinge axis 1-1 and the 1-1 2 The first link 31 on which the hinge axis 1-2 is formed and fixed to one side of the hip support 20, the 2-1 hinge axis 2-1 and the 2-2 hinge axis The second link 32 on which (2-2) is formed, the 1-1 hinge shaft 1-1 of the first link 31, and the second link 32 of the second link 32. The third link 33 connected to the second hinge axis 2-2 and the 1-2 hinge axis of the first link 31 so as to cross the third link 33 in an X shape ( 1-2), and a fourth link 34 connected to the 2-1 hinge shaft 2-1 of the second link 32.

Here, the third link 33 and the fourth link 34 are formed in a shape bent along the side shapes of the backrest 10 and the hiprest 20 so as not to interfere with the body of a seated person. can

Therefore, while the first link 31 is fixed to the backrest 10 and the second link 32 is fixed to the hiprest 20, the first link 31 and the hip The pedestal 20 is restricted in movement by the third link 33 and the fourth link 34 crossed in an X shape, and has two modes, namely forward mode and folding mode, depending on the crossed shape. can be performed simultaneously.

On the other hand, as shown in FIGS. 1 to 3, the link type joint device 30 interlocks with the fourth link 34 in the folding mode to move the backrest in the direction in which the backrest 10 is erected. An interlocking link for adjusting the angle of the stand 10 may be further included.

More specifically, for example, as shown in FIGS. 1 to 3, the interlocking link extends from the fourth link 34 through the 2-1 hinge axis 2-1 at an extension distance L1 The 5th link 35 to which the 5-1st hinge axis 5-1 is connected to the extension part extended by as much as A sixth link 36 connected to the fifth link 35 and a fixed link connected to the 6-2 hinge shaft 6-2 of the sixth link 36 and fixed to the backrest 10 ( 37) may be further included.

Here, as shown in FIGS. 1 and 2, the sixth link 36 or the fixed link 37 is shown spaced apart from the backrest 10, but this is only shown for explanation, In addition, it is possible to be fixed to the side of the backrest 10 or fixed to the installation surface or wall.

Therefore, by the fifth link 35 interlocked with the fourth link 34, the angle of the fifth link 35 is raised according to the angle of the fourth link 34 in the folding mode, By raising the angle of the backrest 10 as well, it is possible to increase space utilization by folding the backrest 10 close to the installation surface or wall.

3 to 5 are side views showing the folding process of the folding sheet 100 of FIG. 1 step by step.

As shown in FIGS. 3 to 5, the operation process of the folding seat 100 according to some embodiments of the present invention will be described step by step. First, as shown in FIG. 3, the seated person can sit down When the hip support 20 is in an unfolded state with respect to the backrest 10, the first link 31 and the second link 32 are lying in a horizontal state as a whole with different heights, respectively. As a shape, the third link 33 and the fourth link 34 support each other in an X-shape, so that the first link 31 and the second link 32 are restrained, so that the hip support The table 20 can be firmly supported while enduring the load of the seated person.

Subsequently, as shown in FIG. 4, when the user grabs and lifts the hip support 20, the angle of the second link 32 is changed from a generally horizontal state to a generally vertical state, and the third link As the state in which (33) and the fourth link 34 are crossed is released, the 2-1 hinge point 2-1 of the second link 32 and the 2-2 hinge point A forward mode in which the buttock rest 20 moves forward by the distance between (2-2) and a folding mode in which the buttock rest 20 is folded in the direction of the backrest 10 can be simultaneously performed. .

Subsequently, as shown in FIG. 5, since the hiprest 20 is folded forward by a predetermined distance, even if the hiprest 20 has a curve, the surface of the backrest 10 can be almost completely adhered to.

At this time, as the fifth link 35 interlocked with the fourth link 34 is pulled by the rotation of the fourth link 34 and the angle of the fifth link 35 is changed, the backrest (10) can be folded close to the installation surface or wall.

Therefore, a forward mode in which the buttock rest 20 moves forward with respect to the backrest 10 and a rotation mode in which the buttock support 20 rotates with respect to the backrest 10 can be simultaneously performed. When folded using the link type joint device 30, the adhesion between the hip support 20 and the back support 10 can be greatly increased, and the shape retention or fixation force is increased during folding or unfolding, thereby structurally It is very strong, so durability can be greatly improved, and space utilization can be greatly improved because the backrest 10 can stand on the installation surface or wall when folded using the interlocking link to utilize the back space of the inclined backrest. there is.

6 is a perspective view showing an unfolded state of the folding sheet 200 according to some other embodiments of the present invention, FIG. 7 is an enlarged perspective view of part A of the folding sheet 200 of FIG. 6, and FIG. 8 is 6 is a perspective view showing a folded state of the folding sheet 200, FIG. 9 is an enlarged perspective view of part B of the folding sheet 200 of FIG. 8, and FIG. 10 shows the folding sheet 200 of FIG. It is a side view.

As shown in FIGS. 6 to 10, the joint device of the folding sheet 200 according to some other embodiments of the present invention performs the forward mode, and then the folding mode is performed at least so that it can be sequentially performed. A guide type joint device 40 in which a portion of the guide grooves G1 and G2 are formed may be applied.

More specifically, for example, as shown in FIGS. 6 to 10, the guide type joint device 40 includes a shaft protrusion 41 formed on the hip support 20, and the hip support ( 20), and is fixed to the cam protrusion 42 formed to be spaced apart from the shaft protrusion 41 by the distance L2 and the backrest 10, and in the forward mode, the hiprest 20 is advanced in a direction away from the backrest 10 as a whole, and then in the folding mode, the buttockrest 20 is rotated based on the shaft protrusion 41 so that it can be folded to the backrest 10 It may include a guide bracket 43 in which a first guide groove portion G1 corresponding to the shaft protrusion 41 and a second guide groove portion G2 corresponding to the cam protrusion 42 are formed.

Here, the first guide groove (G1) has a long groove shape formed long in the forward direction so that the hip support 20 can perform the forward mode, and the second guide groove (G2) is in the forward direction. It may include a straight groove part G21 formed long and an arc groove part G22 connected to the straight groove part G21 and formed in an arc shape.

Here, the linear groove part (G21) allows the shaft protrusion 41 and the cam protrusion 42 to move forward by a predetermined distance together with the buttock rest 20 when the hip rest 20 is in forward mode. Is disposed on the center line of the longitudinal direction of the first guide groove portion G1 corresponding to the shaft protrusion 41, and is formed to have the same length as the length of the first guide groove portion G1 corresponding to the cam protrusion. can

In addition, for example, in a natural state in which no external force is applied in the unfolded state, the guide type joint device 40 is configured to support the hip support 20 backward by elastic restoring force so that it can be firmly supported. It is installed between the 41 and the guide bracket 43 and includes a first elastic spring E1 having a restoring force acting in a direction in which the hip rest 20 moves backward with respect to the back rest 10. In the forward state of the hip support 20, the guide type joint device 40 is configured to support the cam A second elastic spring E2 installed between the protrusion 42 and the guide bracket 43 and having a restoring force acting in a direction in which the buttock rest 20 is folded based on the back rest 10 is further provided. can include

10 to 13 are side views showing the folding process of the folding sheet 200 of FIG. 6 step by step.

As shown in FIGS. 10 to 13, the operation process of the folding seat 200 according to some other embodiments of the present invention will be described step by step. First, as shown in FIG. 10(a), seating When the buttock support 20 is in an unfolded state with respect to the backrest 10 so that the person can sit on it, as shown in FIG. 10(b), the shaft protrusion 41 is the first guide It is located at the rear of the groove part G1, and the cam protrusion 42 is located at the rear of the straight groove part G21 so that the seated person can be firmly supported without the hip rest 20 rotating.

Then, as shown in (a) of FIG. 11, when the user grabs the hip support 20 and forcibly advances it in a state where the restoring force of the first elastic spring E1 is overcome, (b) of FIG. 11 As shown in , as the hip support 20 moves forward, the shaft protrusion 41 is located in front of the first guide groove part G1, and the cam protrusion 42 is the straight groove part G21. It is located in front of the buttock support 20 can be positioned in a rotatable position relative to the shaft protrusion 41.

Then, as shown in (a) of FIG. 12, at a position where the hip support 20 is rotatable with respect to the shaft protrusion 41, the restoring force of the second elastic spring E2 The hip support 20 may be rotated based on the shaft protrusion 41 .

Subsequently, as shown in (a) and (b) of FIG. 13, since the hip support 20 is folded forward by a predetermined distance, even if the hip support 20 has a curve, It can be almost completely adhered to the surface of the backrest 10.

Therefore, a forward mode in which the buttock rest 20 moves forward relative to the backrest 10 and a rotation mode in which the buttock support 20 rotates relative to the backrest 10 can be sequentially performed. By using the guide-type joint device 40 that can be folded, the adhesion between the hip support 20 and the back support 10 can be greatly increased, and the shape retention or fixation force is increased during folding or unfolding, thereby increasing structural As it is very strong, durability can be greatly improved.

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 will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

10: backrest
20: hip support
30: link type joint device
31: first link
32: second link
33: third link
34: fourth link
35: fifth link
36: sixth link
1-1: 1-1 hinge axis
1-2: 1st-2nd hinge axis
2-1: 2-1 hinge axis
2-2: 2-2nd hinge axis
L1: extended distance
5-1: 5-1 hinge axis
6-1: 6-1 hinge axis
6-2: 6-2nd hinge axis
37: fixed link
40: guided joint device
41: axon
42: cam projection
L2: separation distance
43: guide bracket
G1: first guide groove
G2: 2nd guide groove
G21: straight groove
G22: Circular Groove
E1: first elastic spring
E2: second elastic spring
100, 200: folding sheet

Claims (12)

backrest;
hip support; and
A forward mode in which the buttockrest is advanced forward with respect to the backrest so that the buttockrest can be folded in close contact with the backrest, and a folding mode in which the buttockrest is folded upward in the direction of the backrest simultaneously or sequentially. Including; joint device to perform;
The joint device,
A link-type joint device composed of a plurality of links installed to cross at least a portion in an X shape so that the forward mode and the folding mode can be performed at the same time, folding sheet. delete According to claim 1,
The link type joint device,
a first link fixed to one side of the backrest and having a 1-1 hinge axis and a 1-2 hinge axis formed thereon;
a second link fixed to one side of the hip support and having a 2-1 hinge axis and a 2-2 hinge axis;
a third link connected to the 1-1 hinge axis of the first link and the 2-2 hinge axis of the second link; and
a fourth link connected to the 1-2 hinge axis of the first link and the 2-1 hinge axis of the second link so as to intersect the third link in an X shape;
Including, folding sheet. According to claim 3,
The link type joint device,
an interlocking link interlocking with the fourth link in the folding mode to adjust an angle of the backrest in a direction in which the backrest is erected;
Further comprising a, folding sheet. According to claim 4,
The interlocking link,
a fifth link having a 5-1-th hinge axis connected to an extension portion extending from the fourth link by an extension distance beyond the 2-1-th hinge axis; and
A sixth link fixed to an installation surface or a wall and having a 6-1 hinge axis connected to the fifth link;
Including, folding sheet. According to claim 5,
The interlocking link,
a fixed link connected to the 6-2 hinge shaft of the sixth link and fixed to the backrest;
Further comprising a, folding sheet. According to claim 1,
The joint device is a guide type joint device in which at least a part of a guide groove is formed so that the forward mode is performed and then the folding mode is sequentially performed,
The guide type joint device,
Axial protrusion formed on the buttock support;
a cam protrusion formed on the hip support and spaced apart from the shaft protrusion by a distance; and
It is fixed to the backrest, and in the forward mode, the hiprest is advanced in a direction away from the backrest as a whole, and then in the folding mode, the hiprest is rotated based on the shaft protrusion so that it can be folded to the backrest a guide bracket having a first guide groove corresponding to the shaft protrusion and a second guide groove corresponding to the cam protrusion;
Including, folding sheet. delete According to claim 7,
The first guide groove part has a long groove shape formed long in the forward direction,
The second guide groove,
Straight grooves formed long in the forward direction; and
an arc groove portion connected to the straight groove portion and formed in an arc shape;
Including, folding sheet According to claim 9,
The straight groove part,
It is disposed on the center line of the first guide groove in the longitudinal direction,
Formed to the same length as the length of the first guide groove, the folding sheet. According to claim 7,
The guide type joint device,
a first elastic spring installed between the shaft protrusion and the guide bracket and having a restoring force acting in a direction in which the buttock support is moved backward with respect to the backrest;
A folding sheet comprising a. According to claim 7,
The guide type joint device,
a second elastic spring installed between the cam protrusion and the guide bracket and having a restoring force acting in a direction in which the buttock rest is folded based on the back rest;
A folding sheet comprising a.

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