KR20190140133A - Tilting apparatus of chair and chair having the same - Google Patents

Abstract

A tilting device for a chair is disclosed. The tilting device according to an embodiment of the present invention includes: a vertical frame one end of which is coupled to the bottom of a seating portion and the other end of which is extended to the rear of the backrest portion; a tilting bracket coupled to the other end of the vertical frame so as to be tiltable to support the backrest portion from the rear, and tilted by a force transmitted to the backrest portion; a support panel provided at the rear of the tilting bracket; an elastic member of which one end supports the rear side of the tilting bracket and the other end is supported by the support panel, and which is compressed when the tilting bracket is tilted, and returns the tilting bracket to an original position by generating a restoring force when the force transmitted to the backrest is released. One or more partition walls are formed on the rear surface of the tilting bracket so that the rear surface of the tilting bracket is partitioned into two or more regions, and the elastic member is disposed in each partitioned region.

Description

Tilting device for chairs and chairs having the same {TILTING APPARATUS OF CHAIR AND CHAIR HAVING THE SAME}

The present invention relates to a tilting device for efficiently distributing the force applied to the back of the chair and a chair having the same.

Chairs are one of the typical furnitures, and their shapes vary greatly depending on the purpose and design. Among them, for the convenience of the user (seater) is often provided with a back support for supporting the back of the seated person. When the seated person exerts a force on the back while changing posture, the back is applied. At this time, if the backrest does not move elastically, the seated person feels uncomfortable, so the backrest is generally designed to move elastically by the force applied from the seated person. The device applied for this is the tilting device of the chair.

The tilting device is capable of tilting in a predetermined range and is installed to support the backrest portion from the rear side. In addition, an elastic member such as a spring is positioned inside the tilting device. The elastic member is compressed when a force is applied to the backrest from the seated person and the tilting device is tilted, and when the force applied to the backrest is released, a restoring force is generated to return the tilting device to its original position. Compression and restoration of such elastic members is closely related to the feel of the seated person. In addition, the elastic member is a part to which the force applied to the back portion from the seated person is concentrated. In other words, the elastic member not only greatly affects the user's feeling, but also is an important factor in determining the durability of the tilting device. For example, if the elastic restoring force of the elastic member is too small, the restoring force is lost by exceeding the elastic limit according to the force applied to the backrest by the seated person. This leads to a malfunction of the tilting device. On the contrary, if the elastic restoring force of the elastic member is too large, the tilting device may not smoothly respond to the change in the posture of the seated person, thereby reducing the user's feeling. Therefore, in order to set the optimum elastic restoring force that can satisfy both the usability and durability in the tilting device, research and development including the material design of the elastic member is required. However, since the material design of the elastic member is inherently expensive, it cannot be easily executed. Therefore, the method of increasing the peristing period of the tilting device in a simpler way without adversely affecting the comfort of the seated person. Is required.

Prior Document 1: Korean Patent Registration No. 10-1538031 (Notification Date: July 22, 2015) Prior Document 2: Korean Patent Registration No. 10-1591947 (Notification Date: January 29, 2016) Prior Document 3: Korean Patent Registration No. 10-1717919 (Notification Date: March 20, 2017) Prior Document 4: Korean Patent Registration No. 10-1503490 (Notification Date: March 18, 2015)

The present invention is to provide a chair tilting device that can effectively increase the endurance without adversely affecting the user's feeling by dispersing the force applied from the seated person effectively.

According to an aspect of the invention, one end is coupled to the bottom of the seating portion and the other end is formed of a vertical frame extending to the back of the back; A tilting bracket coupled to the other end of the vertical frame so as to be tilted to support and support the backrest from the rear, and tilted by a force transmitted to the backrest; A support panel provided at the rear of the tilting bracket; One end supports the rear side of the tilting bracket and the other end is supported by the support panel, and the tilting bracket includes an elastic member that is compressed when the tilting bracket is tilted and generates a restoring force when the force transmitted to the backrest part is released to return the tilting bracket to its original position. One or more partition walls may be formed on the rear surface of the tilting bracket so that the rear surface is divided into two or more regions, and each of the divided regions may be provided with a chair tilting device in which the elastic member is disposed.

At this time, the elastic member may be a torsion spring.

In addition, a partition wall is formed at the center of the rear surface of the tilting bracket so that the rear surface of the tilting bracket is partitioned into a first region and a second region on the basis of the partition wall, and the first elastic member and the second region are disposed in the first region. The second elastic member may be disposed to be symmetrical with respect to the partition wall.

On the other hand, the tilting device is coupled to the front of the tilting bracket back support panel for supporting the back portion; And a box frame coupled to the back of the back panel and having an empty space therein, wherein the other end of the vertical frame, the tilting bracket, the support panel, and the elastic member are positioned in the empty space. It may further include a seating panel coupled to one end of the frame to support the seating portion.

The tilting device of the chair according to the embodiments of the present invention forms two or more areas on the back of the tilting bracket and arranges the elastic members for each of the divided areas, thereby providing a plurality of forces applied to the tilting bracket when the seated person's posture is changed. The elastic member can be effectively dispersed. Therefore, the durability of the tilting device can be increased in a simple manner without adversely affecting the comfort of the seated person.

1 is a view showing a chair including a tilting device according to an embodiment of the present invention,
2 is a perspective view of a tilting device according to an embodiment of the present invention,
3 is an exploded perspective view of the tilting apparatus of FIG. 2;
4 is a view showing a view of the tilting bracket from the rear in the tilting device of FIG.
5 is a view showing a chair including a tilting device according to another embodiment of the present invention;
6 is an enlarged view of a part of the tilting apparatus shown in FIG. 5, and
7 is an exploded perspective view of the tilting apparatus shown in FIG. 5.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention. The following description should be understood to describe the present invention with specific examples, and the technical spirit of the present invention is not limited to the following description. And the accompanying drawings are provided to help understand the present invention, the technical spirit of the present invention is not limited to the accompanying drawings. In addition, in the drawings, the thickness or size of each member may be exaggerated, omitted, or schematically illustrated for convenience of description.

<First Embodiment>

1 is a view showing a chair 100 including a tilting device 200 according to an embodiment of the present invention. Referring to FIG. 1, the chair 100 may include a seating part 110, a backrest part 120, an armrest part 130, and a leg part 140. Seating unit 110 is a conventional configuration for the user (hereinafter, a seated person) to be seated. The seating unit 110 may be supported below by the leg unit 140. The seating unit 110 may include a conventional seating frame and a seat cushion disposed above the seating frame. The backrest part 120 is a conventional structure for supporting the back part of a seated person. The backrest part 120 may include a normal backing frame and a backing cushion disposed on the backing frame. Although not shown in the drawings, a headrest (not shown) may be provided on the upper part of the backrest part 120 to mount the head of the seated person. Armrest unit 130 is provided on both sides of the seating unit 110 to mount the arm of the seated person for convenience. In some cases, the armrest 130 may be omitted. The leg 130 is assembled to a central axis supporting the bottom of the seat 110 to support the seat 110 from the ground. Leg 130 may be provided with a radial leg as shown in Figure 1, the leg may be coupled to the wheel for the movement of the chair (100). Since the seating part 110, the backrest part 120, the armrest part 130, and the leg part 140 correspond to typical components in the chair 100, a detailed description thereof will be omitted.

The tilting device 200 has one end coupled to the bottom of the seat 110 and the other end coupled to the rear of the backrest 120, thereby connecting the seat 110 and the back 120. When the tilting device 200 is applied to the backrest part 120 by the seated person and the backrest part 120 is flipped backward, the tilting device 200 is tilted at a predetermined angle accordingly. In addition, when the force applied to the backrest 120 is released, it is restored to its original position. The detailed configuration of the tilting device 200 will be described with reference to other drawings. Meanwhile, the words indicating a direction in the present specification are based on FIG. 1. For example, the 'front' means the front direction of the backrest part 120, and the 'backward' means the back direction of the backrest part 120 and the same also applies to the following.

2 is a perspective view of the tilting device 200 according to an embodiment of the present invention, Figure 3 is an exploded perspective view of the tilting device 200 of FIG. 2 and 3, the tilting device 200 includes a vertical frame 210, a tilting bracket 220, a support panel 230, and an elastic member 240.

The vertical frame 210 is formed such that one end is coupled to the bottom of the seating unit 110 (see FIG. 1) and the other end extends to the rear of the backrest unit 120 (see FIG. 1). To this end, the vertical frame 210 may be bent toward the backrest part 120 from the bottom of the seating part 110 to have an extended shape. The vertical frame 210 may be composed of a pair of members, and in some cases, may be composed of more members. A tilting shaft coupling hole 210a may be provided at the other end of the vertical frame 210.

The tilting bracket 220 is coupled to be tiltable in front of the other end of the vertical frame 210. The front surface of the tilting bracket 220 may be formed flat so as to be in close contact with the rear surface of the backrest portion 120. The tilting bracket 220 may have a pair of sidewalls extending rearward, and coupling holes (not shown) may be formed in each sidewall. The tilting bracket 220 includes a tilting shaft 221. Both ends of the tilting shaft 221 may be horizontally coupled to the vertical frame 210 through the tilting shaft coupling hole 210a provided in the vertical frame 210 and the coupling hole provided in the tilting bracket 220. Accordingly, the tilting bracket 220 may be tilted based on the tilting shaft 221.

The support panel 230 is provided at the rear of the tilting bracket 220 and may be formed in a plate shape. In detail, the support panel 230 may be fixedly installed between the pair of vertical frames 210 and at the rear of the tilting shaft 221, and the front surface of the support panel 230 may be tilted bracket 220 as shown in FIG. 3. Can be arranged to face.

The elastic member 240 is installed in the rear inner side of the tilting bracket 220, one end may support the rear surface of the tilting bracket 220 and the other end may be supported by the support panel 230. When a force is applied to the backrest part 120 rearward according to a change in the posture of the seated person, the tilting bracket 220 may be tilted backward by the tilting shaft 221. At this time, since the support panel 230 disposed behind the tilting bracket 220 is fixed, the elastic member 240 is pressed by the tilting bracket 220 to be elastically compressed. When the force applied to the backrest part 120 is released, the elastic member 240 may generate a restoring force and tilt the tilting bracket 220 forward to return to the original position. As described above, the elastic member 240 is sufficient if one end supports the rear surface of the tilting bracket 220 and the other end is supported by the support panel 230 to be elastically compressed by the tilting bracket 220. It is not specifically limited. More specifically, a torsion spring may be used as the elastic member 220. The tilting bracket 220 and the elastic member 240 will be described below in more detail with reference to other drawings.

The tilting device 200 may further include a back panel 250, a box frame 260, and a seating panel 270.

The back panel 250 may be coupled to the front of the tilting bracket 220 to support the back portion 120. The back panel 250 may be formed in a plate shape, wherein the front surface of the back panel 250 is coupled to the rear surface of the back portion 120, and the rear surface of the back panel 250 is the front surface of the tilting bracket 220. Can be combined.

The box frame 260 may be formed to be coupled to the rear surface of the back panel 250 and have an empty space therein. For example, as shown in the accompanying drawings, the box frame 260 may be formed in a rectangular box shape in which the front is open and the rear is closed, and the front edge portion may be coupled to the rear surface of the back panel 250. Accordingly, the inside space of the box frame 260 includes the other end of the vertical frame 210, the tilting bracket 220, the support panel 230, and the elastic member 240 coupled to the other end of the vertical frame 210. ) May be located.

The seating panel 270 may be coupled to one end of the vertical frame 210 to support the seating unit 110 (see FIG. 1). For example, the seating panel 270 may be formed at least partially flat to closely contact the bottom surface of the seating unit 110, and may be coupled to the upper end of the vertical frame 210 by welding or the like. In addition, the other part of the seating panel 270 may have a shape bent toward the backrest portion 120 to correspond to the vertical frame 210. Although not shown in the drawings, a first coupling hole may be provided at a lower center of the seating unit 110, and a second coupling hole may be provided at a position corresponding to the first coupling hole in the seating panel 270. In addition, the seating panel 270 may be coupled to the seating unit 110 through a coupling member 280 provided with a coupling unit to penetrate the first coupling hole and the second coupling hole.

Hereinafter, the tilting bracket 220 and the elastic member 240 in the tilting apparatus 200 according to embodiments of the present invention will be described in more detail.

FIG. 4 is a view illustrating the tilting bracket 220 viewed from the rear in the tilting apparatus 200 of FIG. 3. Referring to FIG. 4, one or more partition walls 222 may be formed on the rear surface of the tilting bracket 220. The sidewalls 223 may be extended to both rear surfaces of the rear surface of the tilting bracket 220. Accordingly, the rear surface of the tilting bracket 220 may be partitioned into two or more regions by the partition wall 222 and the side wall 223. For example, in FIG. 4, the rear surface of the tilting bracket 220 is divided into the first region 220a and the second region 220b by one partition wall 222 and the sidewall 223. Of course, two or more partition walls 222 may be formed. In this case, the rear surface of the tilting bracket 220 may be partitioned into more regions. However, for convenience of description, the following description will focus on the case where one partition wall 222 is formed.

The elastic member 240 may be disposed at each partitioned area of the tilting bracket 220 with respect to the tilting bracket 220 having a rear surface divided into two or more areas. For example, as shown in FIG. 4, the partition wall 222 is formed at the center of the rear surface of the tilting bracket 220 so that the rear surface of the tilting bracket 220 is the first region 220a and the second surface based on the partition wall 222. When partitioned into the region 220b, the elastic member 240 may be disposed in the first region 220a and the second region 220b, respectively. Hereinafter, the elastic member 240 disposed in the first region 220a is referred to as the first elastic member 240-1, and the elastic member 240 disposed in the second region 220b is referred to as the second elastic member 240. It is referred to as -2). In this case, the first and second elastic members 240-1 and 240-2 may have lengths corresponding to the widths of the first and second regions 220a and 220b. On the other hand, the elastic member 240 may be arranged in such a way that is connected to the tilting shaft 221 coupled to the tilting bracket 220 in the horizontal direction as shown in FIG.

As described above, when the rear surface of the fitting bracket 220 is divided into two or more regions, and the elastic member 240 is disposed in each region, the force applied to the tilting bracket 220 when the posture of the seated person is changed is a plurality of elasticities. The member 240 may be effectively dispersed. If only one elastic member is disposed, the seated person may exceed the elastic limit according to the force applied to the backrest portion 120 and lose the restoring force, which leads to a loss of function of the tilting device. In addition, since the elastic member is a component in which the force applied to the backrest part 120 from the seated person is concentrated, when only one elastic member is disposed, the durability is shortened due to the accumulation of fatigue as the compression and restoration are repeated. There is a problem. In order to solve this problem, it is possible to consider a method of increasing the elastic restoring force of the elastic member through the material design of the elastic member, but this entails a lot of research and development costs, and if the elastic restoring force is increased, it may adversely affect the feel of the seated person. It is difficult. However, when the rear surface of the tilting bracket 220 is divided into two or more regions and the elastic members 240 are disposed in the respective regions as in the present invention, the plurality of elastic members 240 are arranged in series to disperse the force distribution points. By generating more, the above-mentioned problems can be solved in a relatively simple manner without changing the material of the existing elastic member. That is, by arranging the elastic member 240 in each region, the durability of the tilting device 200 can be increased without adversely affecting the comfort of the seated person.

Meanwhile, the first elastic member 240-1 and the second elastic member 240-2 may be disposed to be symmetrical with respect to the partition wall 222. For example, when the first elastic member 240-1 and the second elastic member 240-2 are torsion springs, the twist directions of the first elastic member 240-1 and the second elastic member 240-2 are mutually different. Can be arranged to be reversed. More specifically, as shown in FIG. 4, the first elastic member 240-1 is disposed such that one end 240-1a of the first elastic member 240-1 is located close to the partition wall 222. The second elastic member 240-2 may be disposed such that one end 240-2a of the second elastic member 240-2 is also located close to the partition wall 222. That is, one end of each of the first and second elastic members 240-1 and 240-2 is positioned to be close to both sides of the partition wall 222, and the other end is positioned to be close to the side wall 223. The first and second elastic members 240-1 and 240-2 may achieve symmetry. In this case, one end of the elastic members 240-1 and 240-2 is concentrated in the vicinity of the partition wall 222, compared to the case in which symmetry is not performed. It is possible to more effectively disperse the force.

As described above, the tilting device of the chair according to the embodiments of the present invention is formed by dividing two or more areas on the back of the tilting bracket and arranging elastic members for each of the divided areas, thereby being applied to the tilting bracket when changing the posture of the seated person. The force can be effectively distributed to the plurality of elastic members. Therefore, the durability of the tilting device can be increased in a simple manner without adversely affecting the comfort of the seated person.

Second Embodiment

5 is a view showing a chair including a tilting device according to another embodiment of the present invention. Referring to FIG. 5, the tilting device 300 of the chair may be installed at two portions of the lower back frame 121 constituting the backrest 120 of the chair. The first tilting device 300-1 and the second tilting device 300-1 disperse the total force acting on the backrest part 120 into the first force and the second force. That is, if the backrest portion 120 is partitioned into the first region and the second region, the total force acting on the backrest portion 120 may be decomposed into a force acting on the first region and the second region. When the force acting on the first region is called the first force, the first tilting device 300-1 may be deformed by the first force. When the force acting on the second region is called a second force, the second tilting device 300-1 may be deformed by the second force.

The total force F acting on the backrest portion 120 is theoretically distributed evenly in the first region and the second region, but in fact is not evenly distributed in the first region and the second region, thus acting on the first region. The first force F1 and the second force F2 acting on the second region are different in magnitude and direction.

The tilting device 300 of the chair according to another embodiment of the present invention distributes the force acting on the backrest portion 120 to act as the first tilting device 300-1 and the second tilting device 300-2, respectively. By designing to reduce the stress acting on the tilting device 300, the tilting direction is adjusted in accordance with the direction of the force acting on the backrest portion 120 to achieve the effect that the user can sit more comfortably.

6 is an enlarged view illustrating a tilting device portion of the chair illustrated in FIG. 5. Referring to FIG. 6, the force acting on the backrest is provided by installing the first tilting device 300-1 and the second tilting device 300-2 at two lower portions of the backrest frame 121 of the backrest part 120. It is effective to disperse these two places. The first tilting device 300-1 includes an upper connection part 310-1, an elastic member 320-1, and a lower connection part 330-1. The upper connection part 310-1 is fastened and fixed by the back frame 121 and the fastening member. The upper end of the elastic member 320-1 is fitted to the lower end of the upper connection portion 310-1. The elastic member 320-1 may be implemented as a circular compression spring. The other end of the elastic member 320-1 is fitted to the upper portion of the lower connection portion 330-1. One side of the lower connection portion 330-1 is fitted to one side of the vertical frame 110. The vertical frame 110 is a Y-shaped, U-shaped there are two connecting parts. The lower connecting portion 330-1 of the first tilting device 300-1 fits into one connecting portion of the vertical frame 110 and the lower connecting portion 330-2 of the second tilting device 300-2. Is fitted to the remaining connection of the vertical frame (110). The elastic member 320 may be deformed in a direction perpendicular to the major axis direction by implementing a compression spring. The deformation direction of the elastic member 320 can be 360 ° if the direction perpendicular to the major axis direction. However, the first elastic member 320-1 and the second elastic member 320-2 are designed independently of each other, but are connected to the same back frame 121, respectively, so that the first elastic member 320-1 and the first elastic member 320-1 are different from each other. The direction of elastic movement of the second elastic member 320-2 has a mutual influence.

7 is an exploded perspective view of the tilting device of the chair shown in FIG. 5. Referring to FIG. 7, the tilting device 300 of the chair may be implemented by two tilting devices. That is, the tilting device 300 may be configured of the first tilting device 300-1 and the second tilting device 300-2.

Since the first tilting device 300-1 and the second tilting device 300-2 have the same components, only the first tilting device 300-1 will be described. The first tilting device 300-1 includes an upper connection part 310-1, an elastic member 320-1, and a lower connection part 330-1.

The upper connection portion 310-1 is fastened by the fastening groove and the fastening member 122-1 provided in the backrest frame 121. The elastic member 320-1 may be implemented with various components that can provide an elastic force. In this embodiment, the elastic member 320-1 will be described based on the compression spring. The compression spring has a compressive force and a restoring force in the long axis direction, and may be deformed by an elastic force in a direction perpendicular to the long axis direction. When the elastic member is deformed by the external force, the elastic force acts in the opposite direction in which the deformation occurs, and the deformation continues until the external force and the elastic force are equivalent. Thus, the elastic member 320 provides an elastic force to tilt in the horizontal direction of the chair. One side of the lower connection portion 330-1 is fitted with the elastic member 320-1, and the other side is fitted with one side of the vertical frame 340. The vertical frame 340 has a portion to be fitted at two positions in a Y shape, a U shape, or the like. The lower portion of the vertical frame 340 may be coupled to the lower surface of the seating portion 110 of the chair by the coupling member 350.

Furthermore, the present invention may additionally provide a chair including the tilting device 200 described above. The chair may include all types and types of chairs including a seat and a back.

The technical spirit of the present invention has been described above in detail. However, those skilled in the art to which the present invention pertains, within the scope of the technical spirit of the present invention described in the claims, simple design changes, omission of some components, simple use changes, etc. Various modifications may be made to the invention, and such modifications are obviously included within the scope of the present invention.

100: chair 110: sitting part
120: back portion 130: armrest portion
140: leg 200: tilting device
210: vertical frame 220: tilting bracket
221: tilting axis 222: partition wall
230: support panel 240: elastic member
250: back panel 260: box frame
270: seating panel 280: coupling member
300: tilting device 310: upper connection
320: elastic member 330: lower connection portion
340: vertical frame 350: coupling member

Claims (10)

A vertical frame having one end coupled to the bottom of the seating portion and the other end extending to the rear of the backrest portion;
A tilting bracket coupled to the other end of the vertical frame so as to be tiltable to support and support the backrest from the rear, and tilted by a force transmitted to the backrest;
A support panel provided at the rear of the tilting bracket;
One end supports the rear side of the tilting bracket, and the other end is supported by the support panel, and when the tilting bracket is tilted, it is compressed.
One or more partition walls are formed on the rear surface of the tilting bracket so that the rear surface of the tilting bracket is partitioned into two or more regions, and the elastic member is disposed in each partitioned region. According to claim 1,
Tilting device of the chair, characterized in that the elastic member is a torsion spring. The method of claim 2,
A partition wall is formed at the center of the rear surface of the tilting bracket so that the rear surface of the tilting bracket is partitioned into a first region and a second region based on the partition wall, and is disposed in the first elastic member and the second region disposed in the first region. Tilting device of the chair is arranged so that the second elastic member is symmetrical with respect to the partition wall. The method according to any one of claims 1 to 3,
A back support panel coupled to the front of the tilting bracket to support the back support; And
It is coupled to the back of the back panel and is formed to have an empty space therein, the tilting device of the chair further comprises a box frame in which the other end of the vertical frame, the tilting bracket, the support panel and the elastic member is located. The method of claim 4, wherein
And a seating panel coupled to one end of the vertical frame to support the seating portion. In the tilting device of the chair,
An upper connection part connected to at least two locations on a back frame forming the back part of a chair;
An elastic member having one side inserted into a lower portion of the upper connection part and bent in a vertical direction in a long axis direction;
A lower connection part of which one side is fitted to the other side of the elastic member and the other side is connected to one side of the vertical frame; And
A portion not connected with the lower connection part includes the vertical frame connected to the lower surface of the support part of the chair,
The elastic member is composed of a first elastic member and a second elastic member, the tilting device of the chair, characterized in that the force acting on the back portion is dispersed by the first elastic member and the second elastic member. The method of claim 6,
And the elastic member is a compression spring. The method of claim 6,
When the elastic member is partitioned into the first region and the second region, the first elastic member is first deformed by the first force applied to the first region, and the second elastic member is applied to the second region. 2. A tilting device for a chair, comprising: the second elastic member second deformed by force. The method of claim 6,
The vertical frame is a tilting device of the chair, characterized in that the U-shape. A vertical frame having one end coupled to the bottom of the seating portion and the other end extending to the rear of the backrest portion;
A tilting bracket coupled to the other end of the vertical frame so as to be tiltable to support and support the backrest from the rear, and tilted by a force transmitted to the backrest;
A support panel provided at the rear of the tilting bracket;
One end supports the rear side of the tilting bracket, and the other end is supported by the support panel, and when the tilting bracket is tilted, it is compressed.
At least one partition wall is formed on the rear surface of the tilting bracket so that the rear surface of the tilting bracket is partitioned into two or more areas, and the chair having a tilting device of the chair in which the elastic member is disposed in each partitioned area.

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