KR102513256B1 - A Tilting Assembly for a Chair Including a Forward Tilting Function and a Chair Including the Same - Google Patents

Abstract

A tilting assembly for a chair according to the present invention comprises: a seat plate frame fixed to a lower part of a seat plate of a chair; a tilting frame connected to a lower end of a backrest of the chair and combined with the seat plate frame; a supporting frame combined with a lower part of the tilting frame; a main housing formed to be combined with a lower structure of the chair, having the tilting frame and the seat plate frame connected to an upper part thereof to be able to tilt, and having an accommodation space formed therein; a restoring force providing unit provided in the accommodation space and providing, to the supporting frame, a restoring force in a second tilting direction, which is an opposite direction to a first tilting direction that is the tilting direction of the seat plate frame and the tilting frame caused by a load applied to an upper structure of the chair including the seat plate and the backrest; and a forward tilting action restricting unit provided in the main housing, formed to selectively support part of the supporting frame at a predetermined position on the tilting path of the supporting frame, and preventing the supporting frame being tilted in the second tilting direction by the restoring force providing unit while supporting part of the supporting frame. Therefore, a tilting assembly for a chair and a chair includes the same, wherein a correct sitting posture can be maintained, and space efficiency can be enhanced.

Description

A tilting assembly for a chair including a forward tilting function and a chair including the same {A Tilting Assembly for a Chair Including a Forward Tilting Function and a Chair Including the Same}

The present invention relates to a tilting assembly for a chair and a chair including the same, and more particularly, to a tilting assembly for a chair having a forward tilting function implemented and capable of selectively limiting the forward tilting function, and a chair including the same it's about

A chair is a device designed for a specific user to sit on, and generally has a structure including a seat on which the user sits, legs supporting the seat, and a backrest provided behind the seat and supporting the user's back.

In particular, recently produced chairs have a tilting structure in which legs, a seat, and a backrest are organically connected to each other and the backrest can be tilted conveniently in order to maximize user comfort.

Korean Patent Registration No. 10-1285731 is a patent filed in the past by the present invention and the same applicant, and discloses a tilting structure of a chair, a tilting strength adjusting structure, and a tilting limiting structure in detail.

This type of chair has the advantage that the backrest and the seat plate can be tilted at an angle desired by the user, and the backrest and seat plate can be conveniently used by fixing them so that they are not tilted as needed.

However, the conventional chair basically has a backrest and a seat plate tilted backward, and has a mechanism that prevents the seat plate from tilting forward any longer in a horizontal state.

Accordingly, the conventional chair has a problem in that when the user tilts his upper body forward and is working, such as working on a computer, the back of the chair does not come into close contact with the user's back, so that a correct sitting posture cannot be maintained and the load is not evenly distributed to the back.

Therefore, a method for solving these problems is required.

Korean Patent Registration No. 10-1285731

The present invention is an invention made to solve the above-mentioned problems of the prior art, and implements a forward tilting function of the upper structure including the backrest and seat plate, so that the back of the chair adheres to the user's back while the user tilts the upper body forward. An object of the present invention is to provide a tilting assembly for a chair capable of maintaining a correct sitting posture and improving space efficiency, and a chair including the same.

The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the tilting assembly for a chair including a forward tilting function of the present invention includes a seat frame fixed to the lower part of the seat plate of the chair, a tilting frame connected to the lower part of the backrest of the chair and combined with the seat frame, the A support frame coupled to the lower part of the tilting frame and a lower structure of the chair are coupled to each other, the tilting frame and the seat frame are connected to the upper part to be tiltable, and a main housing having an accommodation space therein, provided in the accommodation space and the second tilting direction opposite to the first tilting direction, which is the tilting direction of the seat frame and the tilting frame, due to the load applied to the upper structure of the chair including the seat plate and the backrest. Restoring force is applied to the support frame It is provided in the restoring force providing unit and the main housing, and is formed to selectively support a part of the support frame at a predetermined position on the tilting path of the support frame, so that the support frame is in a state of supporting a part of the support frame and a forward tilting action limiting unit preventing tilting in the second tilting direction by the restoring force providing unit.

In this case, the forward tilting action limiting unit may be provided at a position capable of restricting forward tilting of the seat board of the chair from a horizontal state on the tilting path of the support frame.

Specifically, the forward tilting action limiting unit is formed long in the longitudinal direction, is formed to pass through the side of the main housing, and at least a part of the length including the other end is exposed to the accommodation space. A stopper bar and an outer side of the main housing It is provided at one end of the stopper bar exposed to, and a grip control unit provided so that the user can adjust the length of the stopper bar exposed to the accommodation space through manipulation.

In this case, the support frame may include a hooking portion protruding to be caught on the other end of the stopper bar.

In addition, the forward tilting action limiting unit further includes a separation prevention protrusion preventing the stopper bar from being separated from the accommodation space as the stopper bar is protruded at a predetermined angle with respect to the longitudinal direction of the stopper bar at a predetermined position of the stopper bar. can do.

At this time, the departure prevention protrusion is formed to have a predetermined length, and an insertion hole into which the departure prevention protrusion is inserted may be formed in the stopper bar.

On the other hand, the main housing protrudes from the inner surface of the main housing to the inside of the accommodation space, and the load applied to the upper structure of the chair is removed, and the seat plate of the chair is tilted forward from the horizontal state by the restoring force providing unit In this state, it may include a tilting range limiting protrusion formed to hang a part of the support frame so that the support frame is not further tilted in the second tilting direction by the restoring force providing unit.

In addition, the restoring force providing unit includes a pressure member in contact with the support frame, a tension adjusting member provided at a position spaced apart from the pressure member, and having a variable separation distance from the pressure member, the pressure member and the tension. An elastic member provided between the adjusting members to provide elastic force and connecting between the pressing member and the tension adjusting member, provided in a state engaged with the tension adjusting member by a screw thread to adjust the position of the tension adjusting member A provided connection bar may be included.

In addition, the present invention may further include a restoring force variable unit for varying the restoring force of the restoring force providing unit.

In addition, the present invention may further include a tilting prevention unit that selectively fixes the support frame to prevent the tilting frame and the seat frame from being tilted in the first tilting direction and the second tilting direction.

In order to solve the above problems, the tilting assembly for a chair including a forward tilting function and a chair including the same of the present invention, when the load applied to the upper structure of the chair including the seat plate and the backrest is removed, the upper structure of the chair By including a restoring force providing unit that provides a restoring force in the second tilting direction, which is opposite to the first tilting direction, which is the tilting direction due to the load applied to the front tilting, the seat plate of the chair can be tilted forward more than the horizontal state. A tilting assembly for a chair that can evenly distribute the load to the backrest and improve space efficiency by ensuring that the backrest of the chair adheres to the user's back while the user tilts the upper body forward. It has the purpose of providing a chair that includes

Therefore, the present invention has the advantage of allowing the user to maintain a correct sitting posture, minimizing interference with the backrest or the like to people's passage, and improving space efficiency.

In addition, the present invention further includes a forward tilting action limiting unit capable of selectively limiting the forward tilting function, so that the forward tilting function can be selectively activated or deactivated as needed, thereby providing convenient usability.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a view showing the appearance of a chair according to an embodiment of the present invention;
Figure 2 is a view showing the appearance of a tilting assembly for a chair according to an embodiment of the present invention;
Figure 3 is an exploded view showing each component of the tilting assembly for a chair according to an embodiment of the present invention;
4 is a view showing a tilting mechanism of an upper structure in a tilting assembly for a chair according to an embodiment of the present invention;
5 is a view showing a state in which the upper structure of a chair according to an embodiment of the present invention is tilted forward;
6 is a view showing a state of a forward tilting action limiting unit in a tilting assembly for a chair according to an embodiment of the present invention;
7 and 8 are diagrams showing the operation of a forward tilting action limiting unit in a tilting assembly for a chair according to an embodiment of the present invention; and
9 is a view showing a structure for limiting a maximum tilting angle of a support frame in a tilting assembly for a chair according to an embodiment of the present invention.

In this specification, when an element (or region, layer, section, etc.) is referred to as being “on,” “connected to,” or “coupled to” another element, it is directly placed/placed on the other element. It means that they can be connected/combined or a third component may be placed between them.

Like reference numerals designate like components. Also, in the drawings, the thickness, ratio, and dimensions of components are exaggerated for effective description of technical content.

“And/or” includes any combination of one or more that the associated elements may define.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In addition, terms such as "below", "lower side", "above", and "upper side" are used to describe the relationship between components shown in the drawings. The above terms are relative concepts and will be described based on the directions shown in the drawings.

Unless defined otherwise, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In addition, terms such as terms defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the related art, and are not explicitly defined herein unless interpreted in an ideal or overly formal sense. do.

Terms such as "include" or "have" are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but that one or more other features, numbers, or steps are present. However, it should be understood that it does not preclude the possibility of existence or addition of operations, components, parts, or combinations thereof.

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

1 is a view showing the appearance of a chair according to an embodiment of the present invention.

As shown in FIG. 1, the chair of this embodiment has an upper structure 10 including a seat plate 12 and a backrest 11, and a lower structure 20 including an air cylinder 21 and a support leg 22. ).

And, between the upper structure 10 and the lower structure 20, a tilting assembly 100 capable of performing a function of tilting and adjusting the height of the upper structure 10 is provided.

Hereinafter, the tilting assembly 100 will be described in detail.

2 is a view showing the appearance of a tilting assembly 100 for a chair according to an embodiment of the present invention, and FIG. 3 is an exploded view of each component of the tilting assembly 100 for a chair according to an embodiment of the present invention. is the drawing shown.

2 and 3, the tilting assembly 100 for a chair according to an embodiment of the present invention includes a seat frame 120, a tilting frame 110, a main housing 130, a support frame 140, It includes a restoring force providing unit 150 and a forward tilting action limiting unit 200.

The seat frame 120 is fixed to the lower part of the seat plate 12 (see FIG. 1) of the chair, and in the present embodiment, a pair of seat frames 120 are fixed to the lower part of the seat plate 12 while being spaced apart in the left and right directions.

The tilting frame 110 is connected to the lower end of the backrest 11 (see FIG. 1) of the chair and coupled to the seat frame 120. In the present embodiment, the tilting frame 110 is provided between a pair of seat frames 120 spaced apart in the left and right directions, and is coupled to the seat frame 120 to have some rotational freedom.

The main housing 130 is formed so that the lower structure of the chair (20, see FIG. 1) is coupled, and the tilting frame 110 and the seat frame 120 are tiltably connected to the top, and a receiving space is formed inside. have

Specifically, in this embodiment, a cylinder coupling hole 131 to which an air cylinder 21 (see FIG. 1) of a chair is coupled is formed on one side of the main housing 130, and the tilting frame 110 and the seat frame 120 are Each is rotatably connected to the main housing 130 about a predetermined axis of rotation. In the case of this embodiment, the axis of rotation of the seat frame 120 is illustrated as being formed in front of the axis of rotation of the tilting frame 110.

The support frame 140 is coupled to the lower portion of the tilting frame 110, has a shape that slightly protrudes downward, and has a shape including a supported member 145 in contact with a restoring force providing unit 150 to be described later.

In addition, the restoring force providing unit 150 is provided in the accommodation space of the main housing 130, and the seat frame 120 due to the load applied to the upper structure 10 of the chair including the seat plate 12 and the backrest 11 And it serves to provide restoring force to the support frame 140 in a second tilting direction opposite to the first tilting direction, which is the tilting direction of the tilting frame 110.

4 is a view showing the tilting mechanism of the upper structure 10 in the tilting assembly 100 for a chair according to an embodiment of the present invention.

As shown in FIG. 4, in this embodiment, the restoring force providing unit 150 includes a pressing member 151 in contact with the supported member 145 of the support frame 140, and such a pressing member 151 It is provided at a spaced position, and includes a tension adjusting member 154 formed to be able to vary the separation distance from the pressing member 151.

In addition, the restoring force providing unit 150 is provided between the pressing member 151 and the tension adjusting member 154 and provides an elastic member 153 providing elastic force, and between the pressing member 151 and the tension adjusting member 154. It is connected and has a form including a connection bar 152 provided in a state engaged by a thread with the tension adjusting member 154 and provided to adjust the position of the tension adjusting member 154.

Accordingly, in the present embodiment, when a load is applied to the upper structure 10 of the chair including the seat plate 12 and the backrest 11, the elastic member 153 is pressed and compressed, and the seat frame 120 and the tilting frame (110) may be tilted in the first tilting direction.

Conversely, when the load is removed from the upper structure 10 of the chair including the seat plate 12 and the backrest 11, the seat frame 120 is restored to its original shape by elasticity of the elastic member 153. And the tilting frame 110 is tilted in a second tilting direction opposite to the first tilting direction.

Therefore, in this case, as shown in FIG. 5, the upper structure 10 of the chair can be tilted forward as a whole, and thus, the present invention allows the back of the chair to be in close contact with the user's back while the user tilts the upper body forward. By making it so that the load can be evenly distributed to the backrest, the user can maintain a correct sitting posture.

In addition, according to the present invention, it is possible to minimize the interference of the backrest 11 or the like to people's passage and improve space efficiency.

Meanwhile, the present invention further includes a forward tilting action limiting unit 200 for selectively limiting the forward tilting function in addition to the forward tilting function.

6 is a view showing the front tilting action limiting unit 200 in the tilting assembly 100 for a chair according to an embodiment of the present invention.

As shown in FIG. 6, the forward tilting action limiting unit 200 is provided in the main housing 150, and selectively supports a part of the support frame 140 at a predetermined position on the tilting path of the support frame 140. formed, and serves to prevent the support frame 140 from being tilted in the second tilting direction by the restoring force providing unit 150 in a state in which a part of the support frame 140 is supported.

To this end, the forward tilting action limiting unit 200 may be provided on the tilting path of the support frame 140 at a position capable of restricting the forward tilting of the seat board 12 of the chair from a horizontal state.

Specifically, in this embodiment, the forward tilting action limiting unit 200 includes a stopper bar 220, a grip control unit 210, and a departure prevention protrusion 230.

The stopper bar 220 is a component that is formed long in the longitudinal direction and is formed to pass through the side of the main housing 130 so that at least a portion of its length including the other end is exposed to the accommodation space of the main housing 130 . To this end, a bar through hole 132 through which the stopper bar 220 passes may be formed in the main housing 130 .

In addition, the grip control unit 210 is provided at one end of the stopper bar 220 exposed to the outside of the main housing 130, so that the user can adjust the length of the stopper bar 220 exposed to the accommodation space through manipulation. provided

In addition, the separation prevention protrusion 230 protrudes at a predetermined angle with respect to the longitudinal direction of the stopper bar 220 at a predetermined position of the stopper bar 220, thereby preventing the stopper bar 220 from completely departing from the accommodation space play a role

In particular, in this embodiment, the anti-leaving protrusion 230 is formed to have a predetermined length, and the stopper bar 220 has an insertion hole 221 into which the anti-leaving protrusion 230 is inserted.

7 and 8 are views showing the operation of the forward tilting action limiting unit 200 in the tilting assembly 100 for a chair according to an embodiment of the present invention.

As shown in FIG. 7 , when the user operates the grip control unit 210 to pull the stopper bar 220 deeper into the accommodation space, the other end of the stopper bar 220 tilts the support frame 140 It is exposed on the path and supports so that the support frame 140 is no longer tilted in the second tilting direction at the corresponding position.

At this time, in this embodiment, the support frame 140 may include a protruding hooking portion 141 to be caught on the other end of the stopper bar 220 . That is, the support frame 140 cannot be tilted in the second tilting direction by the stopper bar 220, but it is possible to tilt in the first tilting direction.

And, as shown in FIG. 8, when the user manipulates the grip control unit 210 to withdraw the stopper bar 220 to the outside of the accommodation space, the other end of the stopper bar 220 moves along the tilting path of the support frame 140 removed from the Accordingly, in this case, the support frame 140 is further tilted in the second tilting direction by the restoring force of the elastic member 153, thereby realizing a forward tilting action.

Meanwhile, FIG. 9 is a view showing a structure for limiting the maximum tilting angle of the support frame 140 in the tilting assembly 100 for a chair according to an embodiment of the present invention.

As shown in FIG. 9, in this embodiment, the support frame 140 is further tilted in the second tilting direction by the restoring force providing unit 150 so that the upper structure 10 of the chair is no longer tilted forward at a certain point. It may further include a tilting range limiting protrusion 133 to limit the rotation.

The tilting range limiting protrusion 133 is provided separately from the forward tilting action limiting unit 200, and as the forward tilting action limiting unit 200 is converted to a state in which the support frame 140 is not supported, the upper part of the chair When the structure 10 is tilted forward, it serves to limit the maximum forward tilt angle.

Specifically, in this embodiment, the tilting range limiting protrusion 133 protrudes from the inner surface of the main housing 130 to the inside of the accommodation space, and the load applied to the upper structure 10 of the chair is removed, thereby restoring force providing unit 150 As a result, the seat plate 20 of the chair is formed so that the hanging part 141 of the support frame 140 is caught in a tilted forward state rather than a horizontal state.

Accordingly, the tilting range limiting protrusion 133 can prevent the support frame 140 from being further tilted in the second tilting direction by the restoring force providing unit 150 .

The forward tilting function of the present invention and the structure selectively limiting it have been described above.

Meanwhile, referring to FIGS. 2 and 3, the present embodiment provides a restoring force variable unit 300 that provides a function for varying the restoring force of the restoring force providing unit 150 and a function for adjusting the height of the air cylinder 21; A tilting prevention unit 400 that fundamentally prevents the tilting frame 110 and the seat frame 120 from tilting in the first tilting direction and the second tilting direction by selectively fixing the support frame 140 may be further included. there is.

However, for such a restoring force variable unit 300 and tilt prevention unit 400, the names of the tilting strength adjusting unit, height adjusting unit, and locking unit are listed in Korea Patent No. 10-1285731 filed by the present invention and the same applicant, respectively. , so detailed descriptions thereof will be omitted.

As described above, the preferred embodiments according to the present invention have been reviewed, and the fact that the present invention can be embodied in other specific forms without departing from the spirit or scope in addition to the above-described embodiments is a matter of ordinary knowledge in the art. It is self-evident to them. Therefore, the embodiments described above are to be regarded as illustrative rather than restrictive, and thus the present invention is not limited to the above description, but may vary within the scope of the appended claims and their equivalents.

10: Superstructure
11: backrest
12: seat
20: substructure
21: air cylinder
22: support leg
100: tilting assembly for chairs
110: tilting frame
120; seat frame
130: main housing
131: cylinder coupling hole
132: bar through hole
133: tilting range limiting protrusion
140: support frame
141: hanging part
145: supported member
150: resilience providing unit
151: pressing member
152: connecting bar
153: elastic member
154: tension adjusting member
200: forward tilting action limiting unit
210: grip control unit
220: stopper bar
221: insertion hole
230: departure prevention protrusion
300: resilience variable unit
400: anti-tilting unit

Claims (11)

Seat frame fixed to the lower part of the seat plate of the chair; a tilting frame connected to the lower part of the backrest of the chair and coupled to the seat frame; a support frame coupled to a lower portion of the tilting frame; a main housing to which a lower structure of a chair is coupled, to which the tilting frame and the seat frame are tiltably connected to an upper portion, and an accommodation space formed therein; It is provided in the accommodation space and is provided in the second tilting direction, which is opposite to the first tilting direction, which is the tilting direction of the seat frame and the tilting frame due to the load applied to the upper structure of the chair including the seat plate and the backrest. In the tilting assembly for a chair comprising a; restoring force providing unit for providing restoring force to the support frame,
When a load is applied to the upper structure of the chair, the seat frame and the tilting frame are tilted in a first tilting direction so that the seat plate of the chair is tilted backward rather than horizontally,
When the load is removed from the upper structure of the chair, the seat frame and the tilting frame are tilted in a second tilting direction by the restoring force providing unit, so that the seat plate of the chair is tilted forward rather than in a horizontal state.
It is provided in the main housing, is formed to selectively support a part of the support frame at a predetermined position on a tilting path in the second tilting direction of the support frame, and in a state selected to support a part of the support frame, the support frame A forward tilting action limiting unit for limiting the forward tilting of the seat of the chair from a horizontal state by preventing the tilting in the second tilting direction by the restoring force providing unit;
The forward tilting action limiting unit,
a stopper bar formed long in the longitudinal direction and penetrating the side of the main housing so that at least a portion of the length including the other end is exposed to the receiving space; and
a grip control unit provided at one end of the stopper bar exposed to the outside of the main housing so that the user can adjust the length of the stopper bar exposed to the accommodation space through manipulation;
including,
Tilting assembly for chairs. delete delete According to claim 1,
The support frame includes a hooking portion protruding to be caught on the other end of the stopper bar.
Tilting assembly for chairs. According to claim 1,
The forward tilting action limiting unit,
Further comprising a departure prevention protrusion for preventing the stopper bar from being separated from the accommodation space as it protrudes at a predetermined angle with respect to the longitudinal direction of the stopper bar at a predetermined position of the stopper bar.
Tilting assembly for chairs. According to claim 5,
The departure prevention protrusion is formed to have a predetermined length,
An insertion hole into which the departure prevention protrusion is inserted is formed in the stopper bar,
Tilting assembly for chairs. According to claim 1,
The main housing,
The load applied to the upper structure of the chair is removed by protruding from the inner surface of the main housing to the inside of the accommodation space, and the seat plate of the chair is tilted forward from the horizontal state by the restoring force providing unit. Including a tilting range limiting protrusion formed so that a part thereof is caught so that the support frame is not further tilted in a second tilting direction by the restoring force providing unit.
Tilting assembly for chairs. According to claim 1,
The restoring force providing unit,
a pressing member in contact with the support frame;
Doedoe provided at a position spaced apart from the pressing member, a tension adjusting member formed to be able to vary the separation distance from the pressing member;
an elastic member provided between the pressing member and the tension adjusting member to provide elastic force; and
a connection bar that connects between the pressure member and the tension adjusting member and is engaged with the tension adjusting member by a screw thread to adjust the position of the tension adjusting member;
including,
Tilting assembly for chairs. According to claim 1,
Further comprising a restoring force variable unit for varying the restoring force of the restoring force providing unit,
Tilting assembly for chairs. According to claim 1,
Further comprising a tilting prevention unit that selectively fixes the support frame to prevent the tilting frame and the seat frame from being tilted in the first tilting direction and the second tilting direction.
Tilting assembly for chairs. A chair comprising the tilting assembly for a chair of any one of claims 1 and 4 to 10

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