Chair

Abstract

A chair according to the present invention comprises a locking bolt for fastening a body coupling portion of a seat plate to a leg body while the seat plate is in a first position, at which the front end faces forward, and while the seat plate is in a second position, at which the front end faces rearward, wherein the body coupling portion is positioned higher when the seat plate is at the second position than when the seat plate is at the first position. The chair has the advantage that the height of the seat plate when the front end of the seat plate faces forward and the height of the seat plate when the front end of the seat plate faces rearward can be adjusted differently.

Description

chair

[0001] The present invention relates to a chair, and more particularly, to a chair that can be used as a dining table by children aged 5 to 10.

[0002]

[0003] Typically, a chair is a product on which a user sits, and is comprised of a seat that supports the user's buttocks and thighs, a backrest that supports the user's back, and a plurality of legs that extend downward from the seat to support the seat. In some cases, the chair may consist solely of the seat and backrest, or of the seat and the plurality of legs.

[0004] Among the above chairs, dining chairs used in general homes are released as adult-sized chairs with a fixed seat height. In addition, dining chairs for children aged 5 to 10 are released as types with a fixed seat height and types with an adjustable seat height. However, in the case of types with an adjustable seat height, most of them are products used from infants onwards, so the price range is high, and there is a problem that the period of use is short when used by children aged 5 to 10 because they do not match the growth rate of children aged 5 to 10.

[0005] Meanwhile, Republic of Korea Patent Publication No. 10-2440465 (September 6, 2022) (hereinafter referred to as “prior art”) discloses a “simple chair with easy height adjustment,” which is a technology for a chair whose seat height can be adjusted.

[0006] The above conventional technology can adjust the height of the cylindrical seat by guiding a protrusion formed on the outer surface of the cylindrical seat to a guide groove formed in multiple up-and-down directions on the main body.

[0007] However, the above-mentioned conventional technology has a structure in which the height is adjusted by rotating the cylindrical seat clockwise or counterclockwise, and thus has a disadvantage in that the height changes little by little, which is not suitable for the growth rate of children aged 5 to 10, and there is also a problem in that the height of the footrest cannot be adjusted.

[0008]

[0009] The technical problem of the present invention is to provide a chair in which the height of the seat is adjusted differently when the front end of the seat faces forward, and the height of the seat is adjusted differently when the front end of the seat faces backward, so that the height of the seat can be adjusted in two stages to suit the growth rate of children aged 5 to 10.

[0010] Another technical object of the present invention is to provide a chair in which the height of the footrest can be adjusted according to the height adjustment of the seat.

[0011] The technical problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0012]

[0013] In order to achieve the above object, a chair according to the present invention comprises a leg body, a seat plate, and a locking bolt. The leg body is provided with legs. A body connecting portion is protrudingly formed on the lower side of the seat plate. The body connecting portion is inserted and connected to the upper side of the leg body at a first position and a second position. The first position is a position where the front end of the seat plate faces forward. The second position is a position where the front end of the seat plate faces rearward. The locking bolt connects the body connecting portion to the leg body at the first position and the second position. The locking bolt positions the body connecting portion at a position higher than the first position at the second position.

[0014] The seat may have a locking nut that is coupled to the locking bolt within the body joint. The locking nut may be composed of a first coupling nut portion and a second coupling nut portion. The first coupling nut portion may be coupled to the locking bolt at the first position. The second coupling nut portion may be coupled to the locking bolt at the second position. The lower portion of the second coupling nut portion may be positioned lower than the lower portion of the first coupling nut portion.

[0015] A first insertion groove, a partition wall, and a second insertion groove may be formed on an upper surface of the leg body. The partition wall may surround the first insertion groove. The second insertion groove may surround the partition wall. The body connecting portion may be composed of an inner barrel portion, a third insertion groove, and an outer barrel portion. The inner barrel portion may be inserted into the first insertion groove. The third insertion groove may surround the inner barrel portion. The partition wall may be inserted into the third insertion groove. The outer barrel portion may surround the third insertion groove. The outer barrel portion may be inserted into the second insertion groove. The locking nut may be installed on an upper surface within the inner barrel portion. The locking bolt may vertically penetrate the lower surface of the leg body. An upper end of the locking bolt may be disposed within the first insertion groove.

[0016] The first insertion groove, the partition wall, the second insertion groove, the inner tube, the third insertion groove, and the outer tube can be formed in a square shape.

[0017] A coupling protrusion may be formed on the outer surface of the above bulkhead. A coupling groove may be formed on the inner surface of the above outer tube. The coupling protrusion may be inserted and coupled into the coupling groove.

[0018] An open hole that connects vertically can be formed in the above-mentioned connecting protrusion.

[0019] An elastic pressure portion may be formed on the inner surface of the outer tube portion. The elastic pressure portion may pressurize the outer surface of the bulkhead.

[0020] A first bolt penetration hole may be formed on the lower surface of the above-mentioned bridge body. The locking bolt may pass through the first bolt penetration hole. The first bolt penetration hole may be in communication with the first insertion groove. The first bolt penetration hole may be formed at a position eccentrically forward from the center of the first insertion groove.

[0021] A first fastening hole may be formed on the lower surface of the first fastening nut portion. The locking bolt may be fastened to the first fastening hole at the first position. A second fastening hole may be formed on the lower surface of the second fastening nut portion. The locking bolt may be fastened to the second fastening hole at the second position.

[0022] A second bolt through hole and a third bolt through hole may be formed on the lower surface of the inner portion. The second bolt through hole may be arranged to correspond to the first fastening hole. The locking bolt may pass through the second bolt through hole at the first position. The third bolt through hole may be arranged to correspond to the second fastening hole. The locking bolt may pass through the third bolt through hole at the second position.

[0023] The leg may be composed of a front left leg, a front right leg, a rear left leg, and a rear right leg. The front left leg may be connected to the front left side of the leg body. The front right leg may be connected to the front right side of the leg body. The rear left leg may be connected to the rear left side of the leg body. The rear right leg may be connected to the rear right side of the leg body. The front left leg and the front right leg may be connected by a front footrest frame. The front footrest frame may be arranged horizontally. The rear left leg and the rear right leg may be connected by a rear footrest frame. The rear footrest frame may be arranged horizontally. The rear footrest frame may be arranged at a higher position than the front footrest frame.

[0024] In the first position, a footrest may be installed by the user on the front footrest frame. Alternatively, in the second position, a footrest may be installed by the user on the rear footrest frame.

[0025] A fixed hook portion and a rotating hook portion may be arranged on the lower side of the footrest. The fixed hook portion may be hooked to one side of one of the front footrest frame and the rear footrest frame. The rotating hook portion may be hooked to the other side of one of the front footrest frame and the rear footrest frame.

[0026] The above fixed hook portion may be formed of a plurality of fixed hook portions spaced apart from each other in the left-right direction. The above rotating hook portion may be arranged correspondingly between the plurality of fixed hook portions.

[0027] Specific details of other embodiments are included in the detailed description and drawings.

[0028]

[0029] In the chair according to the present invention, the locking bolt fastens the body joint of the seat to the leg body at a first position where the front end of the seat faces forward and at a second position where the front end of the seat faces rearward, and the body joint is positioned at a higher position than the first position at the second position, so that the height of the seat is adjusted differently when the front end of the seat faces forward and the height of the seat is adjusted when the front end of the seat faces rearward, thereby enabling the height of the seat to be adjusted in two stages to suit the growth rate of children aged 5 to 10.

[0030] In addition, since the chair according to the present invention has a rear footrest frame positioned higher than a front footrest frame, the chair can be used by installing a footrest on the front footrest frame or the rear footrest frame depending on the height adjustment of the seat, and thus has the effect of enabling the height of the footrest (here, the footrest) to be adjusted depending on the height adjustment of the seat.

[0031] 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.

[0032]

[0033] Fig. 1 is a perspective view showing a chair according to an embodiment of the present invention, showing a state in which the seat and footrest are installed relatively low.

[0034] Figure 2 is a right side view of Figure 1;

[0035] Figure 3 is a perspective view showing a chair according to an embodiment of the present invention, showing a state in which the seat and footrest are installed relatively high.

[0036] Figure 4 is a right side view of Figure 3;

[0037] Figure 5 is an exploded perspective view showing a chair according to an embodiment of the present invention;

[0038] Figure 6 is a bottom perspective view of Figure 5;

[0039] Fig. 7 is a side cross-sectional view showing the main part in Fig. 2;

[0040] Fig. 8 is a side cross-sectional view showing the main part in Fig. 4;

[0041] Fig. 9 is a perspective view showing the locking nut illustrated in Figs. 7 and 8;

[0042] Fig. 10 is a perspective view showing the locking bolts shown in Figs. 7 and 8;

[0043] Fig. 11 is a perspective view showing the leg body shown in Fig. 5;

[0044] Fig. 12 is a bottom perspective view of Fig. 11;

[0045] Figure 13 is a plan view of Figure 11;

[0046] Fig. 14 is a cutaway perspective view of Fig. 11;

[0047] Fig. 15 is a perspective view showing the seat shown in Fig. 6;

[0048] Fig. 16 is a bottom view showing the body joint shown in Fig. 15;

[0049] Fig. 17 is a perspective view showing the footing shown in Fig. 6;

[0050] Figure 18 is an exploded perspective view of Figure 17.

[0051]

[0052] <Explanation of symbols>

[0053] 1: Chair 100: Leg Body

[0054] 110: First insertion groove 120: Bulkhead

[0055] 130: Second insertion groove 140: First bolt through hole

[0056] 151, 152, 153, 154: connecting protrusion 151A: open hole

[0057] 210: Front left leg 220: Front right leg

[0058] 230: Rear left leg 240: Rear right leg

[0059] 250: Front footrest frame 260: Rear footrest frame

[0060] 300: Seat 350: Body joint

[0061] 351: Inner tube 351A: Second bolt through hole

[0062] 351B: Third bolt through hole 352: Third insertion groove

[0063] 353: External tube 353A, 353B, 353C, 353D: Joint groove

[0064] 353E, 353F, 353G, 353H: Elastic pressure part 500: Foot plate

[0065] 510, 520: Fixed hook part 530: Rotating hook part

[0066] 600: Locking bolt 700: Locking nut

[0067] 710: First fastening nut section 715: First fastening hole

[0068] 720: Second fastening nut section 725: Second fastening hole

[0069]

[0070] Hereinafter, a chair according to an embodiment of the present invention will be described with reference to drawings.

[0071] FIG. 1 is a perspective view showing a chair according to an embodiment of the present invention, showing a state in which the seat and footrest are installed relatively low; FIG. 2 is a right side view of FIG. 1; FIG. 3 is a perspective view showing a chair according to an embodiment of the present invention, showing a state in which the seat and footrest are installed relatively high; FIG. 4 is a right side view of FIG. 3; FIG. 5 is an exploded perspective view showing a chair according to an embodiment of the present invention; and FIG. 6 is a bottom perspective view of FIG. 5.

[0072] Referring to FIGS. 1 to 6, terms related to directions such as front, back, left, right, up, down in the description below mean the same directions as front, back, left, right, up, down shown in FIGS. 1 to 4.

[0073] The chair (1) according to an embodiment of the present invention may be a dining chair used by children aged 5 to 10. However, the technical features included in the chair (1) according to an embodiment of the present invention are not limited to the dining chair used by children aged 5 to 10.

[0074] In the chair (1) according to the embodiment of the present invention, when the front end of the seat (300) is installed facing forward as shown in FIGS. 1 and 2, the height of the seat (300) can be relatively low, and when the front end of the seat (300) is installed facing rearward as shown in FIGS. 3 and 4, the height of the seat (300) can be relatively high. Hereinafter, the position where the front end of the seat (300) faces forward is referred to as a 'first position', and the position where the front end of the seat (300) faces rearward is referred to as a 'second position'.

[0075] As shown in FIGS. 1 and 2, the user can adjust the position of the footrest (500) to be relatively low by installing the footrest (500) on the front footrest frame (250) that is positioned relatively low at the first position. In addition, as shown in FIGS. 3 and 4, the user can adjust the position of the footrest (500) to be relatively high by installing the footrest (500) on the rear footrest frame (260) that is positioned relatively high at the second position.

[0076] The footrest (500) illustrated in FIGS. 1 and 2 and the footrest (500) illustrated in FIGS. 3 and 4 may have the same configuration, and the user may use the footrest (500) installed on the front footrest frame (250) at the first position, and then remove it from the front footrest frame (250) at the second position and then install it on the rear footrest frame (260). Alternatively, the user may use the footrest (500) installed on the rear footrest frame (260) at the second position, and then remove it from the rear footrest (260) at the first position and then install it on the front footrest frame (250).

[0077] A chair (1) according to an embodiment of the present invention may include a leg body (100), a plurality of legs (210, 220, 230 (see FIG. 6), 240), a seat (300), a backrest (400), a footrest (500), and a locking bolt (600).

[0078] The leg body (100) may be configured to be provided with a plurality of legs (210, 220, 230, 240). However, the leg body (100) does not necessarily have to be provided with a plurality of legs (210, 220, 230, 240), and may be provided with at least one leg. Hereinafter, an example in which the leg body (100) is provided with a plurality of legs (210, 220, 230, 240) will be described.

[0079] The leg body (100) can be arranged on the upper side of a plurality of legs (210, 220, 230, 240). The plurality of legs (210, 220, 230, 240) can be arranged to protrude downward from the leg body (100).

[0080] A plurality of legs (210, 220, 230, 240) can support a leg body (100), and the leg body (100) can support a seat (300).

[0081] The plurality of legs (210, 220, 230, 240) may include a front left leg (210), a front right leg (220), a rear left leg (230), and a rear right leg (240). The front left leg (210), the front right leg (220), the rear left leg (230), and the rear right leg (240) may be formed to have the same length and shape. The front left leg (210), the front right leg (220), the rear left leg (230), and the rear right leg (240) may be arranged at an angle so that the distance between them increases as they go downward.

[0082] The front left leg (210) may be connected to the front left side of the leg body (100) and may extend in a downward diagonal direction. The front right leg (220) may be connected to the front right side of the leg body (100) and may extend in a downward diagonal direction. The front right leg (220) may be spaced to the right from the front left leg (210) and may be arranged parallel to the front left leg (210). The rear left leg (230) may be connected to the rear left side of the leg body (100) and may extend in a downward diagonal direction. The rear left leg (230) may be spaced rearward from the front left leg (210) and may be arranged parallel to the front left leg (21). The rear right leg (240) may be connected to the rear right side of the leg body (100) and may extend in a downward diagonal direction. The rear right leg (240) may be spaced to the right from the rear left leg (230) and may be positioned parallel to the rear left leg (230). The rear right leg (240) may be spaced rearward from the front right leg (220) and may be positioned parallel to the front right leg (220).

[0083] The front left leg (210) and the front right leg (220) may be connected by a front footrest frame (250). The front footrest frame (250) may be arranged horizontally. The front footrest frame (250) may function as a footrest for a user sitting on the seat (300) at the first position to place their feet. However, in the present embodiment, the user may additionally install a footrest (500) on the front footrest frame (250) at the first position and use it.

[0084] The rear left leg (230) and the rear right leg (240) can be connected by a rear footrest frame (260). The rear footrest frame (260) can be arranged horizontally. The rear footrest frame (260) can be arranged at a higher position than the front footrest frame (250). The rear footrest frame (260) can function as a footrest for a user sitting on the seat (300) at the second position to place their feet. However, in the present embodiment, the user can additionally install and use a separate footrest (500) on the rear footrest frame (260) at the second position.

[0085] The seat (300) may be configured so that a user sits on the upper surface. When a user sits on the upper surface of the seat (300), the seat (300) may support the user's buttocks and thighs.

[0086] A body connecting portion (350) may be formed protrudingly on the lower side of the seat plate (300). The seat plate (300) may include a cushion portion (310, see FIG. 15) formed of a material having cushioning properties, and a support plate portion (320, see FIG. 15) formed of a material harder than the cushion portion (310) and positioned on the lower side of the cushion portion (310) to support the cushion portion (310). The body connecting portion (350) may be formed protruding downward on the lower side of the support plate portion (320).

[0087] The body connecting portion (350) can be inserted and connected to the upper side of the leg body (100) at the first position and the second position. As illustrated in FIG. 2, the body connecting portion (350) can be completely inserted into the interior of the leg body (100) through the upper side of the leg body (100) at the first position. In addition, as illustrated in FIG. 4, the body connecting portion (350) can be arranged so that the upper part protrudes outward from the exterior of the leg body (100) through the upper side of the leg body (100) at the second position.

[0088] The backrest (400) may be arranged to protrude upward from the lower portion of the seat (300). When a user sits on the upper surface of the seat (300), the backrest (400) may support the user's back. However, the core technology of the present embodiment is to adjust the height of the seat (300) differently in the first position and the second position, and thus, the chair (1) according to the embodiment of the present invention may not include the backrest (400).

[0089] The locking bolt (600) can fasten the body coupling portion (350) to the leg body (100) at the first position and the second position. The locking bolt (600) can position the body coupling portion (350) at a higher position than the first position at the second position.

[0090] That is, as shown in FIGS. 1 and 2, the front end of the seat (300) is directed forward, and the body connecting portion (350) of the seat (300) is connected to the leg body (100), and the height of the seat (300) is adjusted relatively low. When the height of the seat (300) is adjusted relatively high, as shown in FIGS. 3 and 4, the user rotates the locking bolt (600) to release the body connecting portion (350) from the leg body (100), then lifts the seat (300) upward to remove the body connecting portion (350) from the leg body (100), then rotates the seat (300) 180 degrees (DEG) so that the front end of the seat (300) is directed rearward, and then the body connecting portion (350) of the seat (300) is connected to the leg body (100) from the upper side of the leg body (100). After inserting it inward, by rotating the locking bolt (600) to fasten the body connecting part (350) to the leg body (100), the height of the seat (300) can be adjusted relatively high as shown in FIGS. 3 and 4. In this case, the user can remove the footrest (500) installed on the front footrest frame (250) from the front footrest frame (250) and then install it on the rear footrest frame (260) positioned higher than the front footrest frame (250).

[0091] On the contrary, when the height of the seat (300) is adjusted relatively high as shown in FIGS. 1 and 2, the user rotates the locking bolt (600) to release the body connecting portion (350) from the leg body (100), then lifts the seat (300) upward to remove the body connecting portion (350) from the leg body (100), then rotates the seat (300) 180 degrees (DEG) so that the front end of the seat (300) faces forward, and then attaches the body connecting portion (350) of the seat (300) to the upper side of the leg body (100). After inserting it inward, by rotating the locking bolt (600) to fasten the body connecting part (350) to the leg body (100), the height of the seat (300) can be adjusted to be relatively low as shown in FIGS. 1 and 2. In this case, the user can remove the footrest (500) installed on the rear footrest frame (260) from the rear footrest frame (260) and then install it on the front footrest frame (250) positioned lower than the rear footrest frame (260).

[0092] Fig. 7 is a side cross-sectional view showing the main part in Fig. 2, Fig. 8 is a side cross-sectional view showing the main part in Fig. 4, and Fig. 9 is a perspective view showing the locking nut shown in Figs. 7 and 8.

[0093] Referring to FIGS. 7 to 9, the chair (1) according to the embodiment of the present invention may further include a locking nut (700). The locking nut (700) may be placed within the body connecting portion (350) of the seat (300). The locking nut (700) may be installed on the upper surface within the body connecting portion (350) and may be fastened with a locking bolt (600) to fix the seat (300) at the first position and the second position.

[0094] The locking nut (700) may have a first locking nut portion (710) and a second locking nut portion (720). A locking bolt (600) may be fastened to the first locking nut portion (710) at the first position where the front end of the seat (300) faces forward, as illustrated in FIG. 7. A locking bolt (600) may be fastened to the second locking nut portion (720) at the second position where the front end of the seat (300) faces rearward, as illustrated in FIG. 8.

[0095] The vertical length of the first fastening nut portion (710) may be formed shorter than the vertical length of the second fastening nut portion (720), and the vertical length of the second fastening nut portion (720) may be formed longer than the vertical length of the first fastening nut portion (710). The upper end of the first fastening nut portion (710) and the upper end of the second fastening nut portion (720) may be arranged at the same height. The lower end of the first fastening nut portion (710) may be arranged at a higher position than the lower end of the second fastening nut portion (720), and the lower end of the second fastening nut portion (720) may be arranged at a lower position than the lower end of the first fastening nut portion (710).

[0096] A first fastening hole (715) may be formed on the lower surface of the first fastening nut portion (710). A locking bolt (600) may be fastened to the first fastening hole (715) at the first position where the front end of the seat plate (300) faces forward, as illustrated in FIG. 7. A second fastening hole (725) may be formed on the lower surface of the second fastening nut portion (720). A locking bolt (600) may be fastened to the second fastening hole (725) at the second position where the front end of the seat plate (300) faces rearward, as illustrated in FIG. 8.

[0097] Fig. 10 is a perspective view showing the locking bolt illustrated in Figs. 7 and 8.

[0098] Referring to FIGS. 7 to 10, the locking bolt (600) may include a handle portion (610) and a stem portion (620). The handle portion (610) may be a portion that a user holds by hand and rotates the locking bolt (600). The stem portion (620) may be arranged to protrude upward from the center of the upper surface of the handle portion (610) and may be a substantial portion that is fastened to the locking nut (700). When the locking bolt (600) is fastened to the locking nut (700), the handle portion (610) may be arranged on the lower surface of the leg body (100), and the stem portion (620) may penetrate upward through the lower surface of the leg body (100).

[0099] A screw thread may be formed on at least the outer circumference of the end portion of the outer circumference of the stem portion (620). The screw thread formed on the outer circumference of the stem portion (620) may be engaged with the screw thread formed on the inner circumference of the first fastening hole (715) when the locking bolt (600) is fastened to the first fastening hole (715), and may be engaged with the screw thread formed on the inner circumference of the second fastening hole (725) when the locking bolt (600) is fastened to the second fastening hole (725).

[0100] Fig. 11 is a perspective view showing the bridge body shown in Fig. 5, Fig. 12 is a bottom perspective view of Fig. 11, Fig. 13 is a plan view of Fig. 11, and Fig. 14 is a cutaway perspective view of Fig. 11.

[0101] Referring to FIGS. 7 and 8, and FIGS. 11 to 14, a plurality of leg connecting portions (161, 162, 163, 164) to which a plurality of legs (210, 220, 230, 240, see FIGS. 1 to 6) are connected, respectively, may be formed in the leg body (100). In the present embodiment, the leg body (100) is formed in an approximately square cylinder shape, and the plurality of leg connecting portions (161, 162, 163, 164) may be formed at each of the four corner portions of the leg body (100).

[0102] The plurality of leg connecting parts (161, 162, 163, 164) may include a front left leg connecting part (161) formed at a front left corner of the leg body (100) to which a front left leg (210) is connected, a front right leg connecting part (162) formed at a front right corner of the leg body (100) to which a front right leg (220) is connected, a rear left leg connecting part (163) formed at a rear left corner of the leg body (100) to which a rear left leg (230) is connected, and a rear right leg connecting part (164) formed at a rear right corner of the leg body (100) to which a rear right leg (240) is connected.

[0103] A plurality of leg connecting holes (161A, 162A, 163A, 164A) may be formed in each of the plurality of leg connecting portions (161, 162, 163, 164). The plurality of leg connecting holes (161A, 162A, 163A, 164A) may be formed to be open vertically, and the upper ends of each of the plurality of leg connecting holes (161A, 162A, 163A, 164A) may be blocked by caps (see FIG. 5, drawing reference numerals not indicated).

[0104] The plurality of leg connecting holes (161A, 162A, 163A, 164A) may include a front left leg connecting hole (161A) formed in the front left leg connecting portion (161) into which the upper end of the front left leg (210) is inserted and connected, a front right leg connecting hole (162A) formed in the front right leg connecting portion (162) into which the upper end of the front right leg (220) is inserted and connected, a rear left leg connecting hole (163A) formed in the rear left leg connecting portion (163) into which the upper end of the rear left leg (230) is inserted and connected, and a rear right leg connecting hole (164A) formed in the rear right leg connecting portion (164) into which the upper end of the rear right leg (240) is inserted and connected.

[0105] A first insertion groove (110), a partition wall (120), and a second insertion groove (130) may be formed on the upper surface of the leg body (100). The partition wall (120) may surround the first insertion groove (110), and the second insertion groove (130) may surround the partition wall (120). The partition wall (120) may partition the first insertion groove (110) and the second insertion groove (130). The leg body (100) may be formed so that the left-right width is longer than the front-to-back width, the first insertion groove (110) may be formed so that the left-right width is longer than the front-to-back width, and the second insertion groove (130) may be formed so that the left-to-right width is longer than the front-to-back width.

[0106] When the body connecting portion (350) of the seat plate (300) is inserted into the leg body (100) through the upper side of the leg body (100), the inner part (351, see FIGS. 15 and 16) of the body connecting portion (150) of the seat plate (300) can be inserted into the first insertion groove (110), the outer part (353, see FIGS. 15 and 16) of the body connecting portion (150) of the seat plate (300) can be inserted into the second insertion groove (130), and the partition wall (120) can be inserted into the third insertion groove (352, see FIGS. 15 and 16) of the body connecting portion (150) of the seat plate (300).

[0107] The first insertion groove (110), the partition wall (120), and the second insertion groove (130) formed in the leg body (100) may be formed in a square shape. However, the first insertion groove (110), the partition wall (120), and the second insertion groove (130) may be formed in a shape corresponding to the inner tube portion (351), the third insertion groove (352), and the outer tube portion (353) constituting the body connecting portion (150) of the seat plate (300), and in addition to the square shape, may be formed in a polygonal shape so as to prevent rotation of the seat plate (300) when the body connecting portion (350) of the seat plate (300) is installed in the leg body (100).

[0108] The locking bolt (600) can penetrate the lower surface of the leg body (100) upward and downward. The upper portion of the locking bolt (600) can be placed within the first insertion groove (110).

[0109] A coupling protrusion (151, 152, 153, 154) may be formed on the outer surface of the bulkhead (120). The coupling protrusion (151, 152, 153, 154) may be configured to be inserted into a coupling groove (353A, 353B, 353C, 353D, see FIGS. 15 and 16) formed on the inner surface of the outer tube portion (353) of the body coupling portion (350) of the seat plate (300) when the body coupling portion (350) of the seat plate (300) is inserted into the leg body (100) through the upper side of the leg body (100).

[0110] The engaging protrusions (151, 152, 153, 154) may be formed of a plurality of engaging protrusions (151, 152, 153, 154). The plurality of engaging protrusions (151, 152, 153, 154) may be arranged to be spaced apart from each other in the circumferential direction of the partition wall. In the present embodiment, since the partition wall (120) is formed in a square shape, the plurality of engaging protrusions (151, 152, 153, 154) may include a front engaging protrusion (151) formed on the front surface of the partition wall (120), a rear engaging protrusion (152) formed on the rear surface of the partition wall (120), a left engaging protrusion (153) formed on the left surface of the partition wall (120), and a right engaging protrusion (154) formed on the right surface of the partition wall (120).

[0111] The front engaging protrusion (151) may be formed by a pair of front engaging protrusions (151) spaced apart from each other in the left-right direction. The rear engaging protrusion (152) may be formed by a pair of rear engaging protrusions (152) spaced apart from each other in the left-right direction. The pair of rear engaging protrusions (152) may be formed at positions corresponding to the pair of front engaging protrusions (151), respectively. The left engaging protrusion (153) may be formed by a pair of left engaging protrusions (153) spaced apart from each other in the front-back direction. The right engaging protrusion (154) may be formed by a pair of right engaging protrusions (154) spaced apart from each other in the front-back direction. The pair of right engaging protrusions (154) may be formed at positions corresponding to the pair of left engaging protrusions (153), respectively. The distance between a pair of front engaging protrusions (151) and the distance between a pair of rear engaging protrusions (152) may be the same as a first length. The distance between a pair of left engaging protrusions (153) and the distance between a pair of right engaging protrusions (154) may be the same as a second length. The first length may be longer than the second length, and the second length may be shorter than the first length.

[0112] The connecting protrusions (151, 152, 153, 154) may be formed with an open hole (151A, see Fig. 14) that is connected vertically. In Fig. 14, the drawing symbol for the open hole (151A) that is connected vertically is indicated only in the front connecting protrusion (151), but the open hole (151A) that is connected vertically may also be formed in the rear connecting protrusion (152), the left connecting protrusion (153), and the right connecting protrusion (154) like the front connecting protrusion (151). The open hole (151A) that is connected vertically may have the function of reducing the weight of the leg body (100).

[0113] A first bolt penetration hole (140) may be formed on the lower surface of the bridge body (100). The locking bolt (600) may pass through the first bolt penetration hole (140). The first bolt penetration hole (140) may be in communication with the first insertion groove (110).

[0114] The first bolt through hole (140) may be formed at a position eccentric forward from the center of the first insertion groove (110). Therefore, the first fastening hole (715) formed in the first fastening nut portion (710) of the locking nut (700) at the first position may be arranged to correspond vertically with the first bolt through hole (140), and the second fastening hole (725) formed in the second fastening nut portion (720) of the locking nut (700) at the second position may be arranged to correspond vertically with the first bolt through hole (140), so that the stem portion (620) of the locking bolt (600) may pass through the first bolt through hole (140) and be fastened to the first fastening hole (715) or the second fastening hole (725).

[0115] Fig. 15 is a perspective view showing the seat shown in Fig. 6, and Fig. 16 is a bottom view showing the body joint shown in Fig. 15.

[0116] Referring to FIGS. 7 and 8 and FIGS. 11 to 16, the body connecting portion (350) of the seat (300) may include an inner barrel portion (351), a third insertion groove (352), and an outer barrel portion (353). The third insertion groove (352) may surround the inner barrel portion (351), and the outer barrel portion (353) may surround the third insertion groove (352). The third insertion groove (352) may partition the inner barrel portion (351) and the outer barrel portion (353). The body connecting portion (350) may be formed so that the left-right width is longer than the front-to-back width, the inner barrel portion (351) may be formed so that the left-right width is longer than the front-to-back width, and the outer barrel portion (353) may be formed so that the left-to-right width is longer than the front-to-back width.

[0117] The body connecting portion (350) may be formed in an approximately square cylinder shape, and the inner cylinder portion (351) and the outer cylinder portion (353) may also be formed in an approximately square cylinder shape. In addition, the third insertion groove (352) may be formed in a square shape. However, the inner cylinder portion (351), the third insertion groove (352), and the outer cylinder portion (353) may be formed in a shape corresponding to the first insertion groove (110), the partition wall (120), and the second insertion groove (130) constituting the leg body (100), and in addition to the square shape, may be formed in a polygonal shape so as to prevent the rotation of the seat plate (300) when the body connecting portion (350) of the seat plate (300) is installed in the leg body (100).

[0118] When the body connecting portion (350) of the seat (300) is inserted into the leg body (100) through the upper side of the leg body (100), the inner tube portion (351) can be inserted into the first insertion groove (110, see FIGS. 11, 13, and 14) of the leg body (100), the outer tube portion (353) can be inserted into the second insertion groove (130, see FIGS. 11, 13, and 14) of the leg body (100), and the bulkhead (120, see FIGS. 11, 13, and 14) of the leg body (100) can be inserted into the third insertion groove (352).

[0119] A connecting groove (353A, 353B, 353C, 353D) may be formed on the inner surface of the outer tube (353). When the body connecting portion (350) of the seat (300) is inserted into the leg body (100) through the upper side of the leg body (100), connecting projections (151, 152, 153, 154, FIGS. 13 and 14) of the leg body (100) may be inserted and connected to the connecting groove (353A, 353B, 353C, 353D).

[0120] The coupling grooves (353A, 353B, 353C, 353D) may be formed as a plurality of coupling grooves (353A, 353B, 353C, 353D). The plurality of coupling grooves (353A, 353B, 353C, 353D) may be arranged spaced apart from each other in the circumferential direction of the outer tube portion (353). In this embodiment, since the outer tube (353) is formed in a square cylinder shape, the plurality of coupling grooves (353A, 353B, 353C, 353D) may include a front coupling groove (353A) formed on the inner surface of the front portion of the outer tube (353), a rear coupling groove (353B) formed on the inner surface of the rear portion of the outer tube (353), a left coupling groove (353C) formed on the inner surface of the left portion of the outer tube (353), and a right coupling groove (353D) formed on the inner surface of the right portion of the outer tube (353).

[0121] The front engaging groove (353A) may be formed as a pair of front engaging grooves (353A) spaced apart from each other in the left-right direction. The rear engaging groove (353B) may be formed as a pair of rear engaging grooves (353B) spaced apart from each other in the left-right direction. The pair of rear engaging grooves (353B) may be formed at positions corresponding to the pair of front engaging grooves (353A), respectively. The left engaging groove (353C) may be formed as a pair of left engaging grooves (353C) spaced apart from each other in the front-back direction. The right engaging groove (353D) may be formed as a pair of right engaging grooves (353D) spaced apart from each other in the front-back direction. The pair of right engaging grooves (353D) may be formed at positions corresponding to the pair of left engaging grooves (353C), respectively. The spacing between the pair of front engaging grooves (353A) and the spacing between the pair of rear engaging grooves (353B) may be equal to the first length. The spacing between the pair of left engaging grooves (353C) and the spacing between the pair of right engaging grooves (353D) may be equal to the second length.

[0122] When the body connecting portion (350) of the seat (300) is inserted into the leg body (100) through the upper side of the leg body (100), the front connecting protrusion (151, see FIGS. 13 and 14) of the leg body (100) can be inserted and connected into the front connecting groove (353A), the rear connecting protrusion (152, see FIG. 13) of the leg body (100) can be inserted and connected into the rear connecting groove (353B), the left connecting protrusion (153, see FIGS. 13 and 14) of the leg body (100) can be inserted and connected into the left connecting groove (353C), and the right connecting protrusion (154, see FIG. 13) of the leg body (100) can be inserted and connected into the right connecting groove (353D).

[0123] An elastic pressure portion (353E, 353F, 353G, 353H) may be further formed on the inner surface of the outer tube portion (353). When the body connecting portion (350) of the seat plate (300) is inserted into the leg body (100) through the upper side of the leg body (100), the elastic pressure portions (353E, 353F, 353G, 353H) may press the outer surface of the partition wall (120) of the leg body (100). The elastic pressure portions (353E, 353F, 353G, 353H) may be formed in a form in which a portion of the inner surface of the outer tube portion (353) is cut off (for example, in a hook shape) and may generate an elastic force when in contact with the outer surface of the partition wall (120) of the leg body (100). Accordingly, when the body connecting portion (350) of the seat (300) is inserted into the leg body (100) through the upper side of the leg body (100), the body connecting portion (350) can be inserted in the correct position without being tilted to one side by eliminating the assembly tolerance by the elastic pressure portion (353E, 353F, 353G, 353H).

[0124] The elastic pressure parts (353E, 353F, 353G, 353H) may be formed of a plurality of elastic pressure parts (353E, 353F, 353G, 353H). The plurality of elastic pressure parts (353E, 353F, 353G, 353H) may include a front elastic pressure part (353E) formed on the central inner surface of the front portion of the outer cylinder (353), a rear elastic pressure part (353F) formed on the central inner surface of the rear portion of the outer cylinder (353), a left elastic pressure part (353G) formed on the central inner surface of the left portion of the outer cylinder (353), and a right elastic pressure part (353H) formed on the central inner surface of the right portion of the outer cylinder (353).

[0125] The front elastic pressure member (353E) can be positioned at a midpoint between a pair of front coupling grooves (353A), the rear elastic pressure member (353F) can be positioned at a midpoint between a pair of rear coupling grooves (353B), the left elastic pressure member (353G) can be positioned at a midpoint between a pair of left coupling grooves (353C), and the right elastic pressure member (353H) can be positioned at a midpoint between a pair of right coupling grooves (353D).

[0126] A locking nut (700) may be installed on the upper surface of the inner barrel (351). A second bolt through hole (351A) and a third bolt through hole (351B) may be formed on the lower surface of the inner barrel (351). In the present embodiment, the lower surface of the inner barrel (351) is composed of a central plate (not indicated in the drawing) in which the second bolt through hole (351A) and the third bolt through hole (351B) are formed, and a plurality of ribs (not indicated in the drawing) that are radially arranged to connect the periphery of the central plate and the lower end of the periphery of the inner barrel (351); however, the lower surface of the inner barrel (351) may be formed in a completely closed form. However, when the lower surface of the inner barrel (351) is composed of the central plate and the plurality of ribs as in the present embodiment, the weight of the seat plate (300) can be reduced.

[0127] The second bolt through hole (351A) can be arranged to correspond to the first fastening hole (715, see FIG. 9) formed in the first fastening nut portion (710, see FIG. 9) of the locking nut (700). The stem portion (620, see FIG. 10) of the locking bolt (600) can pass through the second bolt through hole (351A) at the first position, and the upper end of the stem portion (620) can be inserted into and fastened to the first fastening hole (715).

[0128] The third bolt through hole (351B) can be arranged to correspond to the second fastening hole (725, see Fig. 9) formed in the second fastening nut portion (720, see Fig. 9) of the locking nut (700). The stem portion (620, see Fig. 10) of the locking bolt (600) can pass through the third bolt through hole (351B) at the second position, and the upper end of the stem portion (620) can be inserted into and fastened to the second fastening hole (725).

[0129] Fig. 17 is a perspective view showing the footrest illustrated in Fig. 6, and Fig. 18 is an exploded perspective view of Fig. 17.

[0130] Referring to FIGS. 17 and 18, a plurality of fixed hook parts (510, 520) and a rotating hook part (530) can be arranged on the lower side of the footrest (500).

[0131] The plurality of fixed hook portions (510, 520) can be hooked to one side of one of the front foot frame (250, see FIGS. 1 and 3 and FIGS. 5 and 6) and the rear foot frame (260, see FIGS. 1 and 3 and FIGS. 5 and 6). That is, as shown in FIGS. 1 and 2, when the height of the seat (300) is adjusted relatively low in the first position, the foot plate (500) can be installed on the front foot plate frame (250), and in this case, the plurality of fixed hook portions (510, 520) can be hooked to the rear side of the front foot plate frame (250). In addition, as shown in FIGS. 3 and 4, when the height of the seat (300) is adjusted relatively high in the second position, the footrest (500) can be installed on the rear footrest frame (260), and in this case, a plurality of fixed hook portions (510, 520) can be hooked to the front side of the rear footrest frame (260).

[0132] A plurality of fixed hook portions (510, 520) may be arranged to be spaced apart from each other in the left-right direction. The plurality of fixed hook portions (510, 520) may be provided as a pair of fixed hook portions (510, 520) arranged to be spaced apart from each other in the left-right direction. The pair of fixed hook portions (510, 520) may include a first fixed hook portion (510) and a second fixed hook portion (520), and the first fixed hook portion (510) and the second fixed hook portion (520) may be arranged to be spaced apart from each other in the left-right direction.

[0133] When the footrest (500) is installed on the front footrest frame (250) as illustrated in FIGS. 1 and 2, the first fixing hook portion (510) may be positioned to the left of the second fixing hook portion (520). In addition, when the footrest (500) is installed on the rear footrest frame (260) as illustrated in FIGS. 3 and 4, the footrest (500) is installed in the opposite direction compared to when it is installed on the front footrest frame (250) as illustrated in FIGS. 1 and 2, so the first fixing hook portion (510) may be positioned to the right of the second fixing hook portion (520).

[0134] The rotating hook portion (530) can be arranged correspondingly between the plurality of fixed hook portions (510, 520). The rotating hook portion (530) can be hooked to the other side of one of the front footrest frame (250) and the rear footrest frame (260). That is, as shown in FIGS. 1 and 2, when the height of the seat (300) is adjusted relatively low in the first position, the footrest (500) can be installed on the front footrest frame (250), and in this case, the rotating hook portion (530) can be hooked to the front side of the front footrest frame (250). In addition, as shown in FIGS. 3 and 4, when the height of the seat (300) is adjusted relatively high in the second position, the footrest (500) can be installed on the rear footrest frame (260), and in this case, the rotating hook part (530) can be caught on the rear side of the rear footrest frame (260).

[0135] The rotary hook part (530) can be rotatably installed on the foot plate (500). A rotary center protrusion (535) can be formed on each of the upper left and right sides of the rotary hook part (530), and the rotary center protrusion (535) can be inserted into a hole or groove formed in a lower rib of the foot plate (500) to be rotatably coupled to the foot plate (500). The rotary hook part (530) can be rotated around the rotary center protrusion (535) as the rotation center, and a return spring (not shown) that provides elastic force to the other side of one of the front foot plate frame (250) and the rear foot plate frame (260) of the rotary hook part (530) can be installed on the rotary center protrusion (535).

[0136] The front footrest frame (250) and the rear footrest frame (260) may be formed to have an open lower side and an empty interior, as illustrated in FIG. 6, so that a plurality of fixed hook portions (510, 520) and a rotational hook portion (530) can be hooked. That is, when the footrest (500) is installed on the front footrest frame (250), the plurality of fixed hook portions (510, 520) can be hooked to the inner surface of the rear portion of the front footrest frame (250), and the rotational hook portion (530) can be hooked to the inner surface of the front portion of the front footrest frame (250). In addition, when the footrest (500) is installed on the rear footrest frame (260), a plurality of fixed hook portions (510, 520) can be hooked to the inner surface of the front portion of the rear footrest frame (260), and the rotating hook portion (530) can be hooked to the inner surface of the rear portion of the rear footrest frame (260).

[0137]

[0138] As described above, in the chair (1) according to the embodiment of the present invention, the locking bolt (600) fastens the body connecting portion (350) of the seat (300) to the leg body (100) at the first position where the front end of the seat (300) faces forward and at the second position where the front end of the seat (1) faces rearward, and since the body connecting portion (350) is positioned at a higher position than the first position at the second position, the height of the seat (300) when the front end of the seat (300) faces forward and the height of the seat (300) when the front end of the seat (300) faces rearward can be adjusted differently from each other, so that the height of the seat (300) can be adjusted in two stages to suit the growth rate of children aged 5 to 10.

[0139] In addition, since the chair (1) according to the embodiment of the present invention has the rear footrest frame (260) positioned higher than the front footrest frame (250), the footrest (500) can be installed on the front footrest frame (250) or the rear footrest frame (260) depending on the height adjustment of the seat (300), so that the height of the footrest (here, the footrest (500)) can be adjusted depending on the height adjustment of the seat (300).

[0140]

[0141] Those skilled in the art will appreciate that the present invention can be implemented in other specific forms without altering the technical concept or essential characteristics thereof. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims that follow rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

[0142]

[0143] The present invention provides a chair in which the height of the seat is adjusted differently when the front end of the seat faces forward, and the height of the seat is adjusted differently when the front end of the seat faces backward, so that the height of the seat can be adjusted in two stages to suit the growth rate of children aged 5 to 10.

Claims

1. A leg body with legs; A seat having a body joint formed protruding on the lower side and inserted into the upper side of the leg body at a first position where the front end faces forward and a second position where the front end faces rearward; and A chair including a locking bolt that secures the body joint to the leg body at the first position and the second position, and positions the body joint at a higher position than the first position at the second position.

2. In claim 1, A locking nut that is connected to the locking bolt is placed within the body joint portion of the above seat. The locking nut includes a first locking nut portion to which the locking bolt is fastened at the first position, and a second locking nut portion to which the locking bolt is fastened at the second position. A chair in which the lower part of the second fastening nut part is positioned lower than the lower part of the first fastening nut part.

3. In claim 2, On the upper surface of the above leg body, a first insertion groove, a partition wall surrounding the first insertion groove, and a second insertion groove surrounding the partition wall are formed. The above body joint includes an inner portion inserted into the first insertion groove, a third insertion groove surrounding the inner portion and into which the partition is inserted, and an outer portion surrounding the third insertion groove and inserted into the second insertion groove. The above locking nut is installed on the upper surface of the inner tube, A chair in which the above locking bolt penetrates the lower surface of the leg body from top to bottom and has its upper end positioned within the first insertion groove.

4. In claim 3, A chair in which the first insertion groove, the bulkhead, the second insertion groove, the inner tube, the third insertion groove and the outer tube are formed in a square shape.

5. In claim 3, A joining projection is formed on the outer surface of the above bulkhead, A chair in which a joining groove is formed on the inner surface of the outer tube to which the joining projection is inserted and joined.

6. In claim 5, A chair in which an open hole that connects the upper and lower parts is formed in the above-mentioned connecting protrusion.

7. In claim 3, A chair in which an elastic pressure part is formed on the inner surface of the outer tube part to pressurize the outer surface of the bulkhead.

8. In claim 3, A chair in which a first bolt penetration hole through which the locking bolt penetrates is formed on the lower surface of the above-mentioned leg body.

9. In claim 8, A chair in which the first bolt penetration hole is formed in communication with the first insertion groove and is eccentrically positioned forward from the center of the first insertion groove.

10. In claim 9, A first fastening hole is formed on the lower surface of the first fastening nut portion to which the locking bolt is fastened at the first position. A chair in which a second fastening hole is formed on the lower surface of the second fastening nut portion to which the locking bolt is fastened at the second position.

11. In claim 10, A chair in which a second bolt through hole is formed on the lower surface of the inner tube so as to correspond to the first fastening hole and through which the locking bolt passes at the first position, and a third bolt through hole is formed so as to correspond to the second fastening hole and through which the locking bolt passes at the second position.

12. In claim 1, The above leg includes a front left leg coupled to the front left side of the leg body, a front right leg coupled to the front right side of the leg body, a rear left leg coupled to the rear left side of the leg body, and a rear right leg coupled to the rear right side of the leg body. A front footrest frame that is arranged horizontally by connecting the front left leg and the front right leg, A chair further comprising a rear footrest frame that is horizontally arranged to connect the rear left leg and the rear right leg, and is arranged at a higher position than the front footrest frame.

13. In claim 12, A chair further comprising a footrest that is installed by the user on the front footrest frame at the first position, or that is installed by the user on the rear footrest frame at the second position.

14. In claim 13, On the lower side of the above foothold, A fixed hook portion that is hooked to one side of one of the above front foot frame and the above rear foot frame, A chair including a rotating hook portion that is hooked to the other side of one of the front footrest frame and the rear footrest frame.

15. In claim 14, The above fixed hook portion is formed by a plurality of fixed hook portions spaced apart from each other in the left and right directions, A chair in which the above-mentioned rotating hook portion is positioned correspondingly between the above-mentioned plurality of fixed hook portions.

Images