KR101850790B1 - Seat of chair - Google Patents

Abstract

According to the present invention, a seat plate of a chair comprises: a cushion member; an intermediate panel; a fixed base panel; a moving base panel; and an engagement device. The intermediate panel seats and supports the cushion member on the upper surface thereof, and a front intermediate portion is foldably connected to a rear intermediate portion about a lateral horizontal axis by a folding connection portion. The fixed base panel fixes the rear intermediate portion on the upper surface thereof. The moving base panel is hinged to be assembled about the lateral horizontal axis with respect to the fixed base panel while the front intermediate portion is seated on the upper surface of the moving base panel. The engagement device engages or disengages the moving base panel with respect to the fixed base panel.

Description

Seat of chair

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair, and more particularly, to a seat provided on a chair so that a user can sit thereon.

The chair is one of the furniture and it is composed of various kinds. For example, the chair comprises a seat on which the user sits, a leg supporting the seat, and a backrest connected to the seat and supporting the back of the user. In some cases, the chair may further include a headrest for supporting the neck and head of the user on the upper portion of the backrest, or an armrest for supporting both arms of the user on both sides of the seat, thereby enhancing ease of use.

The seat plate supports the hip and the thigh when the user is seated. When the user is seated on the seat, the user's hips and thighs are constrained by their weight. As a result, when the user is seated for a long time on the seat, it is possible to feel inconvenience because a constant pressure is applied to the back of the thigh which is relatively thinner than the buttocks. Some users may feel a pain like a hamstring radicle in the back of the thigh. Therefore, even if the user is seated on the seat for a long time, there is a need for a method for solving the discomfort and pain in the back of the thigh.

The object of the present invention is to provide a seat of a chair which enables a user to take comfort not to feel discomfort or pain in the back of the thigh even when the user is seated for a long time.

In order to achieve the above object, a chair seat according to the present invention includes a cushion member, an intermediate panel, a fixed base panel, a movable base panel, and an engagement mechanism. The mediating panel supports the cushioning member on its upper surface, and the front mediating portion is foldably connected to the rear mediating portion about the horizontal axis on the left and right sides by the folding connection portion. The fixed base panel fixes the rear medial part on the upper surface. The movable base panel is hinged to be rotatable about the horizontal axis with respect to the fixed base panel in a state in which the front medial portion is seated on the upper surface. The latching mechanism engages or disengages the movable base panel with respect to the fixed base panel.

According to the present invention, since the thigh can be released from the thigh when required by the user in a seated state, there is an effect that comfort can be provided without feeling discomfort or pain in the back of the thigh even when sitting for a long time.

1 is a perspective view illustrating an example of a chair employing a seat according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating the seat plate shown in FIG. 1; FIG.
FIG. 3 is an exploded perspective view of FIG. 2. FIG.
Fig. 4 is a perspective view showing the cushion member and the intermediate panel taken in Fig. 3; Fig.
Fig. 5 is a perspective view of the fixed base panel, the movable base panel, and the engagement mechanism shown in Fig. 3; Fig.
FIG. 6 is an exploded perspective view of FIG. 5. FIG.
Fig. 7 is a cross-sectional view taken along the longitudinal direction in Fig. 2; Fig.
Fig. 8 is a cross-sectional view taken along the lateral direction in Fig. 2; Fig.
Fig. 9 is a cross-sectional view showing the state in which the latching mechanism is released from the fixed base panel in Fig. 8; Fig.
Figs. 10 and 11 are views for explaining an example of operation of the seat. Fig.

The present invention will now be described in detail with reference to the accompanying drawings. Here, the same reference numerals are used for the same components, and a detailed description of known functions and configurations that may unnecessarily obscure the gist of the present invention will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

In the following description, the side closer to the user's hip is referred to as the rear of the seat, while the side closer to the thigh of the user is referred to as the front of the seat.

1 is a perspective view illustrating an example of a chair employing a seat according to an embodiment of the present invention.

The chair shown in Fig. 1 is constituted by connecting a leg 10 and a back 20 to a seat 100 according to an embodiment of the present invention. The leg 10 is disposed at the lower portion of the seat 100 to support the seat 100. [ The legs 10 may be configured to adjust the height of the seat 100. [ A wheel can be mounted on the lower end of the leg 10 to facilitate the movement of the chair. The backrest 20 is connected to the seat 100 to support the back of the user. Armrests 30 are connected to the left and right sides of the seat 100 to comfortably support both arms of the user. A headrest 40 for supporting a user's neck and head can be connected to the upper portion of the back 20.

FIG. 2 is a perspective view illustrating the seat plate shown in FIG. 1; FIG. FIG. 3 is an exploded perspective view of FIG. 2. FIG. Fig. 4 is a perspective view showing the cushion member and the intermediate panel taken in Fig. 3; Fig. Fig. 5 is a perspective view of the fixed base panel, the movable base panel, and the engagement mechanism shown in Fig. 3; Fig. FIG. 6 is an exploded perspective view of FIG. 5. FIG. Fig. 7 is a cross-sectional view taken along the longitudinal direction in Fig. 2; Fig. Fig. 8 is a cross-sectional view taken along the lateral direction in Fig. 2; Fig. Fig. 9 is a cross-sectional view showing the state in which the latching mechanism is released from the fixed base panel in Fig. 8; Fig.

2 to 9, a seat 100 according to an embodiment of the present invention includes a cushion member 110, an intermediate panel 120, a fixed base panel 130, a movable base panel 140, And an engagement mechanism 150.

The cushion member 110 provides a sense of cushioning when the user is seated. The cushion member 110 is made of a soft and elastic material so as to support the user's hips and thighs. The cushion member 110 may be made of a high-density sponge, a urethane foam, or a latex.

The cushion member 110 may be made in various forms to allow ergonomic support of the user's hips and thighs comfortably. For example, the cushion member 110 has a front portion that is inclined downward to support the thigh comfortably. The cushion member 110 may be covered with an outer skin of leather or cloth to prevent contamination.

The cushion member 110 may be configured to surround the periphery of the intermediate panel 120, the fixed base panel 130, and the movable base panel 140 while the lower edge of the cushion member 110 is seated on the upper surface of the intermediate panel 120. The cushion member 110 has a portion protruding to a predetermined thickness at the center of the lower portion and is seated in the upper groove 120a of the intermediate panel 120 to be stably supported on the intermediate panel 120. [

The mediating panel 120 supports and supports the cushion member 110 on the upper surface thereof and the front mediating part 121 is foldably connected to the rear mediating part 122 about the horizontal axis on the left and right sides by the folding connecting part 123 . The mediating panel 120 can stably support the cushioning member 110 in a cross-sectional shape similar to the cross-sectional shape of the cushioning member with a circumference smaller than the circumference of the cushioning member 110. [ The mediating panel 120 may be injection molded of a plastic material.

The front and rear width of the front portion 121 can be set to be less than about half of the front and rear width of the rear portion 122. [ The rear portion of the front mediating portion 121 and the front portion of the rear mediating portion 122 are formed to be parallel to the left and right direction and can be arranged to be spaced apart from each other in the back and forth direction.

The folding connection portion 123 connects the front portion 121 and the rear portion 122 such that the front portion 121 is foldable about the left and right horizontal axes with respect to the rear portion 122. For example, the folded connecting portion 123 may include a pair of outer connecting portions 123a and a pair of inner connecting portions 123b.

The outer connection portions 123a are respectively disposed at the left and right edges of the front and rear intermediate portions 121 and 122 to connect the front and rear intermediate portions 121 and 122 to each other. Each of the outer connecting portions 123a has a constricted central portion with respect to the front-rear direction, so that it is possible to facilitate the folding of the front medial portion 121 with respect to the rear medial portion 122. [

The inner connecting portions 123b are disposed closer to the center of the front and rear intermediate portions 121 and 122 than the outer connecting portions 123a to connect the front and rear intermediate portions 121 and 122 to each other. The inner connection portions 123b may be spaced apart from the outer connection portions 123a. Each of the inner connecting portions 123b may be formed such that the central portion thereof is thinner than the front and rear portions with respect to the longitudinal direction.

Each of the inner connecting portions 123b is formed such that the front portion and the rear portion of the inner connecting portion 123b are bent so that the central portion protrudes upward in a state in which the front portion 121 is fully extended with respect to the rear portion 122, It is possible to facilitate the folding of the front portion 121 with respect to the front portion 122.

Therefore, when the movable base panel 140 is released relative to the fixed base panel 130, the front mediating part 121 can move up and down together with the movable base panel 140. Therefore, It is possible to release the thigh pressure with only the elastic force of the member 110 being provided.

The front mediating part 121 can be prevented from escaping to the movable base panel 140 by the escape preventing part. The departure prevention portion may include hooks 124 formed on the lower side of the front portion 121 and hooks 144 formed on the upper side of the movable base panel 140 to hook the hooks 124, respectively.

The fixed base panel 130 fixes the rear intermediate portion 122 on the upper surface thereof. The fixed base panel 130 may be injection molded of a plastic material. The fixed base panel 130 may have a plurality of coupling protrusions 131. The coupling protrusions 131 may be integrally formed with the fixed base panel 130 on the upper surface of the fixed base panel 130 in a ball shape. The coupling protrusions 131 may be arranged in four angles.

In addition, the rear mediating part 122 may have coupling holes 122a for fitting the coupling projections 131, respectively. The rear medial portion 122a has bosses protruding downward at portions corresponding to the respective coupling protrusions 131, and the fitting holes 122a may be formed to pass through the bosses vertically.

Each coupling hole 122a may have a plurality of coupling pieces 122b. The engaging pieces 122b protrude radially from the inner circumferential surface of the engaging hole 122a, and the protruding ends are spaced apart from each other. The engaging pieces 122b are resiliently deformed when the engaging projections 131 are fitted in the engaging holes 122a to apply an elastic force to the engaging projections 131 so that the engaging projections 131 are fixed can do. The fixed base panel 130 may have a rib pattern formed on its upper surface for a robust structure.

The movable base panel 140 is hinged to the fixed base panel 130 so as to be rotatable around the horizontal axis with respect to the fixed base panel 130 in a state in which the front portion 121 is seated on the upper surface. That is, the movable base panel 140 is coupled to the fixed base panel 130 with the hinge shaft 146.

The movable base panel 140 may include movable side bearings 141 that support the hinge shaft at right and left sides thereof. The movable-side bearings 141 may be spaced apart. The fixed base panel 130 may include fixed side bearings 132 disposed between the movable side bearings 141 to support the hinge shaft 146 therebetween.

The pivotal axes of the movable-side bearings 141 and the fixed-side bearings 132 may be positioned correspondingly to a position directly under the folded-up central axis of the folded- The movable base panel 140 may have a rib pattern formed on the upper surface thereof for a robust structure.

The movable base panel 140 may have a cutout groove portion 142 cut from the rear center. In this case, the fixed base panel 130 has a stopper block portion 133 that protrudes from the front center and is inserted into the cutout groove portion 142.

The cutting groove portion 142 has a substantially quadrangular shape. The cutting groove portions 142 are formed so that the left and right inner walls are parallel to each other and are symmetrical. The left and right outer walls of the stopper block portion 133 are formed so as to have clearances with the left and right inner walls of the cutout groove portion 142. The stopper block portion 133 provides an area for seating the latch blocks 152 on the upper left and right upper surfaces of the movable base panel 140 when the movable base panel 140 is locked.

The stopper block portion 133 is inclined so that the upper surface thereof becomes lower toward the front. When the front portion 121 is folded downward, the stopper block portion 133 comes into contact with the lower surface of the front portion 121 on the inclined upper surface to prevent the front portion 121 from being folded over the set angle Can be limited.

In addition, stopper grooves 133a may be formed on the left and right upper surfaces of the stopper block portion 133, and stopper projections 143 may be formed around the left and right sides of the cutout groove portion 142. [ When the movable base panel 140 is rotated downward, the stopper protrusions 143 fit into the stopper grooves 133a to abut against each other, thereby restricting the movable base panel 140 from rotating beyond the set angle In addition, it is possible to restrict the front portion 121 from being folded beyond the set angle.

When the movable base panel 140 is released from the fixed base panel 130, the movable base panel 140 can move up and down together with the front mediating part 121. Therefore, The thigh pressure can be released.

The engagement mechanism 150 engages or disengages the movable base panel 140 with respect to the fixed base panel 130. For example, the latching mechanism 150 includes a pair of latching holes 151, latching blocks 152, return springs 153, actuating blocks 154, a rotating shaft 155, And a lever portion 156 as shown in FIG.

The latching holes 151 are formed on the left and right sides of the cutout groove 142, respectively. The engaging blocks 152 engage the fixed base panel 130 with the movable base panel 140 in a state where the engaging blocks 152 are respectively inserted into the engaging holes 151 located on the upper surface of the stopper block portion 133. [ Accordingly, the movable base panel 140 can be restrained not to pivot downward with respect to the fixed base panel 130.

The locking blocks 152 release the movable base panel 140 with respect to the fixed base panel 130 in a state where the locking blocks 152 are drawn out from the locking holes 151 away from the upper surface of the stopper block portion 133. The latching blocks 152 linearly move in the left and right direction and are pulled out into the latching holes 151 to latch or release the movable base panel 140 relative to the fixed base panel 130.

Each of the latch blocks 152 may have a latching protrusion 152a for latching in and out of the corresponding latching hole 151. Each of the engagement blocks 152 is formed with an inclined portion 152b which is inclined so as to be lowered in a direction approaching the engagement hole 151 on each upper side.

When the operation block 154 presses the inclined portion 152b of the engaging block 152, the inclined portion 152b abuts against the operation block 152 from the upper side to the lower side to move the engaging projection 152a It can be drawn out from the corresponding latching hole 151. The latching protrusions 152a drawn out from the latching holes 151 are positioned in contact with the left and right outer walls of the stopper block portion 133 by a load.

The return springs 153 apply an elastic force to the latch blocks 152 in the direction in which the latch blocks 152 fit into the latch holes 151, respectively. When the engaging blocks 152 are pushed by the actuating blocks 154 and pulled out of the engaging holes 151, the return springs 153 are elastically deformed. When the latching blocks 152 are released from the state of being pushed by the operating blocks 154, the returning springs 153 allow the latching blocks 152 to be automatically drawn into the latching holes 151 by the elastic restoring force . The return spring 153 may be a compression coil spring.

The operation blocks 154 draw the latch blocks 152 from the latch holes 151 as they rotate about the horizontal axis on the left and right so as to press the slopes 152b of the latch blocks 152. [ The actuating blocks 154 may escape from the respective angled portions 152b of the retaining blocks 152 as they rotate in the direction opposite to the direction of pressing the respective angled portions 152b of the retaining blocks 152. [

The rotary shaft 155 is rotatably supported on the upper side of the movable base panel 140 about the horizontal axis on the left and right in a state of being connected to the actuating blocks 154. The rotating shaft 155 may be supported by the shaft supporting brackets 145 mounted on the movable base panel 140 so as to be rotatable. The rotation shaft 155 receives the rotational force of the lever portion 156 and allows the actuating blocks 154 to be linked and rotated at the same time.

The lever portion 156 is pulled out from the lower side of the movable base panel 140 while being connected to the rotating shaft 155 and rotates the rotating shaft 155 as it is rotated by an external force. The lever portion 156 may include a pair of levers 156a. The levers 156a may be drawn through the lower openings 146 of the movable base panel 140. [ The levers 156a are rotated so that the actuating blocks 154 push the angled portions 152a of the engaging blocks 152 as they are pulled forward and the actuating blocks 154 are engaged with the engaging blocks 152 as they are pushed rearward. To be deviated from each inclined portion 152b.

The levers 156a are disposed close to the left and right edges of the movable base panel 140, so that the user can easily operate them with both hands. In addition, the levers 156a are connected adjacent to the actuating blocks 154, thereby reducing the force applied to rotate the actuating blocks 154. [ The lever 156a can be held at a position where the lever 156a abuts against the rear end of the lower opening 146 of the movable base panel 140 and is released from the inclined portion 152b of the latch block 152 .

Although not shown, the lever 156a is provided with an elastic force in a direction of being pushed rearward by a spring, so that the lever 156a may automatically return when an external force pulled forward is removed. The spring may be a torsion spring or the like. Each component of the latching mechanism 150 may be made of a metal material, but the components other than the return spring 153 may be made of a hard plastic material or the like.

An example of the action of the chair on the seat 100 will be described with reference to Figs. 2 to 9 and Figs. 10 and 111. Fig.

The user can sit on the seat 100 in a state where the movable base panel 140 is normally engaged with the fixed base panel 130 by the engagement mechanism 150. [ At this time, when the latching protrusions 152a of the latching blocks 152 are positioned on the upper surface of the stopper block portion 133 of the fixed base panel 130 and the elastic force of the returning springs 153 So that the movable base panel 140 is engaged with the fixed base panel 130. [

As shown in FIG. 10, when the user is seated on the seat 100 and wants to feel pressure on his / her thigh, he / she pulls the levers 156a forward in a state of being seated on the seat 100. As shown in FIG. Then, the rotating shaft 155 rotates in the same direction as the rotating direction of the levers 156a. The actuating blocks 154 push the respective inclined portions 152a of the engaging blocks 152 by the rotation of the rotating shaft 155 so that the engaging protrusions 152 are released from the upper surface of the stopper block portion 133 The movable base panel 140 is released relative to the fixed base panel 130 by being drawn out from the holes 151 and moving to the left and right outer walls of the stopper block portion 133 by the load. 11, since the front portion 121 of the mediar panel 120 is vertically movable together with the movable base panel 140, only the elastic force of the cushion member 110 is applied to the thighs The thigh can be released in one state.

In this state, the user retracts the movable base panel 140 to the fixed base panel 130 and pulls the movable base panel 140 upward when seated. Then, the latching protrusions 152a are lifted corresponding to the latching holes 151 and then inserted into the latching holes 151 by the return springs 153 to be positioned on the upper surface of the stopper block portion 133, The panel 140 may be hooked to the fixed base panel 130. [

As described above, since the seat 100 can release the thigh when necessary in a state where the user is seated, it is possible to provide comfort not to feel inconvenience or pain in the back of the thighs even when sitting for a long time.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation and that those skilled in the art will recognize that various modifications and equivalent arrangements may be made therein. It will be possible. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

110 .. cushion member 120 .. mediating panel
121. A front portion 122. A rear portion
123 .. folded connection 130 .. fixed base panel
140 .. movable base panel 150 .. engagement mechanism
151 .. latching hole 152 .. latching block
153 .. return spring 154 .. working block
155 .. rotation shaft 156 .. lever part

Claims (3)

delete delete A cushion member;
An intermediate panel supported by the upper surface of the cushion member so that the front intermediate portion is foldably connected to the rear intermediate portion by a folding connection portion about the horizontal axis on the left and right;
A fixed base panel for fixing the rear mediator on an upper surface thereof;
A movable base panel hingedly coupled to the fixed base panel so as to be pivotable about right and left horizontal axes in a state where the front medial portion is seated on an upper surface; And
And an engagement mechanism for engaging or releasing the movable base panel with respect to the fixed base panel,
Wherein the movable base panel has an incision groove cut from a rear center;
Wherein the fixed base panel has a sloped stopper block portion that protrudes from a front center and is inserted into the cutout groove portion and is sloped so that an upper surface thereof becomes lower toward the front;
The latch mechanism includes:
A pair of latching holes formed on the left and right sides of the incision groove, respectively;
The stopper base block is engaged with the fixed base panel in a state in which the movable base panel is pulled into the locking holes positioned on the upper surface of the stopper block portion and the movable base panel is pulled out from the upper surface of the stopper block portion, Wherein the base panel is released from the fixed base panel, and each of the latch blocks is formed with a sloped portion inclined to be lowered in a direction approaching the latch hole;
Return springs for applying an elastic force to the latch blocks in a direction in which the latch blocks are inserted into the latch holes, respectively;
Actuation blocks for pulling the latching blocks out of the latching holes as they rotate about the left and right horizontal axes to press the respective ramps of the latching blocks;
A rotating shaft rotatably supported on the upper side of the movable base panel about a horizontal axis on the left and right in a state connected to the operation blocks; And
A lever portion that is pulled out from a lower side of the movable base panel in a state of being connected to the rotation shaft and rotates the rotation shaft as it is rotated by an external force;
Wherein the seat comprises a seat for a chair.

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