JP7029734B2 - Twisted structure of seat back frame - Google Patents

Description

The present invention relates to the twisting structure of the seat back frame, and in particular, when the user twists the body, the twisting motion of the seat back frame occurs accordingly, so that the user's back rests on it. It relates to the twisted structure of the seat back frame, which is in close contact and comfortable to sit on.

The person sitting in the chair leans his back against the seat back, but when he leans his back directly against the hard seat back plate, he may feel pain in his back and feel sick. Therefore, if a cushion is attached to the surface of a hard seat back plate to give the seat back elasticity, it will not feel hard and uncomfortable, but the elasticity of the cushion is limited and it should be attached to the seat back plate. Therefore, the reclining angle is limited, and even if the body is twisted to change the posture when sitting, the twisting motion does not occur in response to the twisted body of the user, so the user twists the body to the left and right. Occasionally, one side of the user's back was separated from the seat back and could not be supported.

An object of the present invention is that when the user twists the body, the seat back frame is twisted accordingly, so that the user's back is brought into close contact with the seat back frame and the seat back is comfortable to sit on. The purpose is to provide a twisting structure for the frame.

In order to solve the above problems, according to the first aspect of the present invention, there is a twisted structure of the seat back frame provided with a flexible seat back frame, and the seat back frame is left and right. It has a first elastic portion and a second elastic portion provided vertically symmetrically, and a third elastic portion and a fourth elastic portion provided horizontally symmetrically, and has the third elastic portion. Both ends of the stile and the fourth stile are connected to both ends of the first and second stiles, respectively, and the first stile, the second stile, and the third. A hollow region is defined by the rod portion and the fourth rod portion, and the first elastic contact rib and the second elastic contact rib and the second elastic contact rib are formed on the first rod portion and the second rod portion of the seat back frame. The elastic contact ribs are integrally molded, and the first elastic contact rib and the second elastic contact rib extend toward the hollow region, and the first elastic contact rib and the second elastic contact rib are formed. Provided is a twisted structure of a seat back frame, characterized in that abutting ribs are located on the left and right sides of the hollow region, respectively.

In the twisting structure of the seat back frame of the present invention, when the user twists the body, a twisting motion occurs accordingly, so that the user's back is in close contact with the twisting structure and the sitting comfort is comfortable. good.

It is a front perspective view which shows the twist structure of the seat back frame which concerns on one Embodiment of this invention. It is a rear perspective view which shows the twist structure of the seat back frame which concerns on one Embodiment of this invention. It is sectional drawing which shows the twist structure of the seat back frame which concerns on one Embodiment of this invention. It is a perspective view of the use state of the twist structure of the seat back frame which concerns on one Embodiment of this invention. It is sectional drawing of the use state of the twist structure of the seat back frame which concerns on one Embodiment of this invention.

See FIGS. 1 and 2. As shown in FIGS. 1 and 2, the twisting structure of the seat back frame according to the embodiment of the present invention is composed of at least the seat back frame 1. The seat back frame 1 has flexibility. The seat back frame 1 is made of polypropylene, and has a first rod portion 11 and a second rod portion 12 provided vertically symmetrically, and a third rod portion 13 and a third rod portion 13 provided vertically symmetrically. It has a fourth rod portion 14. Both ends of the third rod portion 13 and the fourth rod portion 14 are connected to both ends of the first rod portion 11 and the second rod portion 12, respectively. The hollow region 15 is defined by the first rod portion 11, the second rod portion 12, the third rod portion 13, and the fourth rod portion 14. A chair assembly portion 141 is extended to the front central portion of the fourth rod portion 14.
A first elastic contact rib 16 and a second elastic contact rib 17 paired with each other are integrally formed on the first rod portion 11 and the second rod portion 12 of the seat back frame 1. The first elastic contact rib 16 and the second elastic contact rib 17 are located on the left and right sides of the hollow region 15, respectively. The first elastic contact rib 16 extends downward from the upper edge of the first rod portion 11 while tilting toward the center of the hollow region 15, and below the first rod portion 11. The hollow region 15 is connected between the first upper diagonal portion 162 extending upward while tilting toward the center of the hollow region 15 from the edge, and the first lower diagonal portion 161 and the first upper diagonal portion 162. It has a first curved portion 163, which is arcuate toward the center. The second elastic contact rib 17 has a second lower diagonal portion 171 extending downward from the upper edge of the second rod portion 12 while tilting toward the center of the hollow region 15, and a lower portion of the second rod portion 12. The second upper diagonal portion 172 extending upward while tilting from the edge toward the center of the hollow region 15 is connected between the second lower diagonal portion 171 and the second upper diagonal portion 172, and is connected to the hollow region 15. It has a second curved portion 173, which is arcuate toward the center.
The first elastic contact rib 16 and the second elastic contact rib 17 are arcuately projected toward the center of the hollow region 15. The first elastic contact rib 16 and the first elastic contact rib 16 and the second elastic contact rib 17 are located at the upper and lower ends of the first elastic contact rib 16 and the second elastic contact rib 17 where the first rod portion 11 and the second rod portion 12 are located. Support portions 111 and 121 of the second elastic contact rib 17 are provided, respectively. Reinforcing ribs 18 are provided below the first elastic contact ribs 16 and the second elastic contact ribs 17. The reinforcing rib 18 is horizontally provided in the hollow region 15, and a first rod portion 11 and a second rod portion 12 are connected to the left and right ends of the reinforcing rib 18, respectively, and the first elastic contact rib 16 and the first elastic contact rib 18 are connected. The left and right sides of the reinforcing rib 18 are connected to the lower ends of the elastic contact rib 17 of 2.
See also FIG. As shown in FIG. 3, the twisted structure of the seat back frame according to the embodiment of the present invention further includes the seat back cover 2. The seat back cover 2 may be a net cover having a plurality of mesh holes formed therein. The seat back cover 2 covers the seat back frame 1, and the left and right sides of the seat back cover 2 are stretched through the support portions 111 and 121 of the first rod portion 11 and the second rod portion 12, and the first. A first elastic contact rib 16 and a first elastic contact rib 17 extending in the back surface of the first elastic contact rib 16 and the second elastic contact rib 17 in the longitudinal direction. The fitting groove 164 and the second fitting groove 174 are correspondingly fitted and extend from the upper side of the seat back cover 2 to the back surface of the third rod portion 13. A third fitting groove 131 is formed on the back surface of the third rod portion 13 in the longitudinal direction thereof, the upper side of the seat back cover 2 is fitted into the third fitting groove 131, and the bottom of the seat back cover 2 is formed. The side extends to the bottom edge of the reinforcing rib 18 of the seat back frame 1.

When the user sits on the chair in which the seat back frame 1 of the present invention is assembled and the back is leaned against the seat back frame 1, the back is the first elastic contact rib of the seat back frame 1 via the seat back cover 2. It is in contact with the 16 and the second elastic contact rib 17. As a result, when the user twists and stretches the body, when the body is twisted to the right and the back on the right side moves backward, the back on the left side moves forward and the back on the right side of the user's body moves backward. In this case, as shown in FIGS. 4 and 5, the first elastic contact rib 16 of the seat back frame 1 is pressed backward and connected to the first elastic contact rib 16 and the second elastic contact rib 17. The second elastic contact rib 17 of the seat back frame 1 moves relatively forward due to the interlocking of the third rod portion 13 and the like, and is brought into close contact with the back on the left side of the user.
The support portions 111 and 121 of the first rod portion 11 and the second rod portion 12 have first elasticity due to the supporting action of the upper and lower ends of the first elastic contact rib 16 and the second elastic contact rib 17. The abutting rib 16 and the second elastic abutting rib 17 can be maintained at an appropriate amount of elastic deformation to prevent excessive bending, and the comfort when the user's back is leaned against can be enhanced. Further, when the user twists the body to the left, if the back on the left side is moved backward, the back on the right side moves forward, the back on the left side of the user's body moves backward, and the seat back frame 1 is the first. When the elastic contact rib 17 of 2 is pressed backward, it interlocks with the first elastic contact rib 16 and the third rod portion 13 connected to the second elastic contact rib 17, and the second of the seat back frame 1. The elastic contact rib 16 of 1 moves forward and comes into close contact with the back on the right side of the user's body. As described above, the seat back frame 1 of the present invention corresponds to the elastic design of twisting when the user twists the body, and even if the user sits on a chair and twists and stretches the body, the back is the seat back frame. It can be kept in close contact with 1.

When the user's back leans against the seat back frame 1 of the present invention, the heat of the body is discharged from the hollow region 15 of the seat back frame 1 through the net hole formed on the seat back cover 2 of the net cover. Therefore, when the user leans on the seat back frame 1 of the present invention, the air permeability can be enhanced and the comfort level can be enhanced. For this reason, it is possible to prevent the back from becoming hot and sweaty after leaning against the seat back of the chair for a certain period of time as in the conventional case.

The above-described embodiment or drawing does not limit the embodiment of the twisted structure of the seat back frame of the present invention, the seat back cover 2 may be a cloth cover other than the net cover, and the cloth cover may be a cloth body. A single layer of foam may be connected to the inner surface to form a structure.

1 Seat back frame 2 Seat back cover 11 1st chair 12 2nd chair 13 3rd chair 14 4th chair 15 Hollow region 16 1st elastic contact rib 17 2nd elastic contact Rib 18 Reinforcing rib 111 Support part 121 Support part 131 Third fitting groove 141 Chair assembly part 161 First lower diagonal part 162 First upper diagonal part 163 First curved part 164 First fitting groove 171 Second fitting groove 171 Lower diagonal part 172 Second upper diagonal part 173 Second curved part 174 Second fitting groove

Claims (5)

A twisted structure of the seat back frame with a flexible seat back frame.
The seat back frame includes a first rod portion and a second rod portion provided vertically symmetrically, and a third rod portion and a fourth rod portion provided horizontally symmetrically. Both ends of the third rod portion and the fourth rod portion are connected to both ends of the first rod portion and the second rod portion, respectively.
A hollow region is defined by the first rod portion, the second rod portion, the third rod portion, and the fourth rod portion.
A first elastic contact rib and a second elastic contact rib are integrally molded on the first rod portion and the second rod portion of the seat back frame.
The first elastic contact rib and the second elastic contact rib extend toward the hollow region, and the first elastic contact rib and the second elastic contact rib extend to the left and right of the hollow region. Located on each side,
The upper and lower ends of the first elastic contact rib are connected to the upper and lower edges of the first rod, respectively, and the upper and lower ends of the second elastic contact rib are of the second rod. Connected to the upper and lower edges, respectively
The first elastic contact ribs and the first elastic contact ribs are located at the upper and lower ends of the first elastic contact ribs and the second elastic contact ribs where the first rod portion and the second rod portion are located. Each of the support portions of the second elastic contact rib is provided .
Twisted structure of the seat back frame. The first elastic contact rib has a first lower diagonal portion extending downward from the upper edge of the first rod portion while tilting toward the center of the hollow region, and a lower edge of the first rod portion. A first upper diagonal portion extending upward while tilting toward the center of the hollow region, connected between the first lower diagonal portion and the first upper diagonal portion, and in the center of the hollow region. It has a first curved portion that is arcuate toward the center, and the second elastic contact rib is inclined downward from the upper edge of the second rod toward the center of the hollow region. A second lower diagonal portion extending, a second upper diagonal portion extending upward while tilting toward the center of the hollow region from the lower edge of the second rod portion, the second lower diagonal portion, and the second lower diagonal portion. The screw of the seat back frame according to claim 1 , wherein the seat back frame has a second curved portion which is connected to the upper diagonal portion of the second and is arcuate toward the center of the hollow region. Slope structure. Reinforcing ribs are provided below the first elastic contact ribs and the second elastic contact ribs of the seat back frame, and the reinforcing ribs are laid horizontally in the hollow region of the reinforcing ribs. The first rod portion and the second rod portion are connected to both ends, respectively, and the reinforcing ribs are connected to the lower ends of the first elastic contact rib and the second elastic contact rib, respectively. The twisted structure of the seat back frame according to claim 1 , wherein the seat back frame is twisted. Fitting grooves are formed in the back surface of the first elastic contact rib, the second elastic contact rib, and the third rod portion of the seat back frame, respectively, and a seat back cover is further provided. The seat back cover covers the seat back frame, and the left and right sides of the seat back cover are the support portion of the first elastic contact rib of the first rod portion and the first portion of the second rod portion. It extends through the support portion of the elastic contact rib 2 to the back surface of the first elastic contact rib and the second elastic contact rib, and extends to the back surface of the first elastic contact rib and the second elastic contact rib. It is fitted corresponding to the fitting groove on the back surface of the contact rib, extends from the upper side of the seat back cover to the back surface of the third rod portion, and fits into the fitting groove on the back surface of the third rod portion. The twisted structure of the seat back frame according to claim 3 , wherein the seat back cover is fitted correspondingly and extends from the bottom side of the seat back cover to the bottom edge of the reinforcing rib of the seat back frame. The twisted structure of the seat back frame according to claim 1, further comprising a seat back cover, wherein the seat back cover covers the seat back frame and is a net cover or a cloth cover.

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