US20200069064A1 - Chair having flection adjustment module for lumbar support part - Google Patents
Chair having flection adjustment module for lumbar support part Download PDFInfo
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- US20200069064A1 US20200069064A1 US16/503,925 US201916503925A US2020069064A1 US 20200069064 A1 US20200069064 A1 US 20200069064A1 US 201916503925 A US201916503925 A US 201916503925A US 2020069064 A1 US2020069064 A1 US 2020069064A1
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- support part
- flection
- chair
- groove
- adjustment module
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
- A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means
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- the present invention relates to a chair having a flection adjustment module for a lumbar support part, and more particularly, to a chair having a flection adjustment module for a lumbar support part, in which a backrest part and a support part are provided for supporting a back portion of a user, and the flection adjustment module movably coupled between the backrest part and the support part to adjust flection of the lumbar support part is provided, so that flection suitable for the user is formed, and thus a waist portion of the user is supported more comfortably.
- a chair is a mechanism for allowing a user to sit and relax, and various components such as a backrest, an armrest, and a headrest are additionally provided to provide various functions. Meanwhile, in modern society, a considerable amount of work is performed through a computer while sitting at a desk. Accordingly, a variety of chairs are being developed to provide more comfort to the user.
- a chair in which a lumbar support part for supporting a waist portion is additionally provided on a backrest is being manufactured, so that the chair may support the waist portion properly while a user is sitting on the chair so as to prevent the waist portion from being strained even when the user is seated on the chair for a long time, and a simple acupressure treatment effect is provided.
- Korean Patent No. 10-0427193, Korean Patent No. 10-0708303, and Korean Patent No. 10-1608737 disclose a conventional technique for providing a chair for supporting a waist portion.
- Korean Patent No. 10-0427193 discloses a lumbar support chair, which has a seat support on which hips are seated and is provided for allowing a back to be leaned against the chair, the lumbar support chair including: a lumbar support provided to be protrudable to a front side of a backrest; a rotation knob rotatably provided on a rear surface of the backrest; and a rotation bar for allowing the lumbar support to protrude to the front side of the backrest or to be withdrawn from the front side of the backrest according to a rotation of the rotation knob.
- Korean Patent No. 10-0708303 discloses a chair having a variable backrest, the chair including: a backrest in which a seat member having a predetermined elasticity is connected to a frame; and a waist support including a support member having an arc shape to maintain predetermined strength and having both ends connected to the frame with a bolt while forming a predetermined space between the support member and the seat member, including a lifting/lowering device connected to the support member with a distance adjustment device interposed therebetween to lift/lower the support member, and having a contact surface corresponding to a back shape of a user.
- Korean Patent No. 10-1608737 relates to a lumbar support device and a backrest unit of a chair including the same, in which the lumbar support device includes: a support frame having a communication hole; a lumbar support pad; and a back-and-forth movement adjustment unit for adjusting an amount of a back-and-forth movement of the lumbar support pad to a lumbar portion with respect to the support frame through the communication hole.
- a position of the lumbar support pad of the chair for supporting a waist portion of a seated person may be freely set in a vertical direction and a back-and-forth direction according to a body shape, and the lumbar support pad presses a backrest which supports the waist portion, so that it is possible to prevent an inconvenience from being caused by the lumbar support pad by making direct contact with the waist portion.
- a lumbar support part for supporting a waist portion or a lumbar portion is separately provided on the backrest of the chair, thereby providing convenience to the user.
- Korean Patent No. 10-0427193, Korean Patent No. 10-0708303, and Korean Patent No. 10-1608737 since the lumbar support part is separately provided, assembly is complicated, and a number of components constituting a device is increased, and since a number of processes is increased, a manufacturing cost of the chair is increased.
- an overall design of the chair may have no sense of unity due to the lumbar support part, so that aesthetic beauty is reduced, and thus consumers may not tend to choose the chair.
- the present invention proposes a chair having a flection adjustment module for a lumbar support part, capable of adjusting flexion of a backrest of the chair by a simple scheme without separately providing the lumbar support part.
- Patent document 0001 Korean Patent No. 10-0427193 (registered on Apr. 2, 2004)
- Patent document 0002 Korean Patent No. 10-0708303 (registered on Apr. 10, 2007)
- Patent document 0003 Korean Patent No. 10-1608737 (registered on Mar. 29, 2016)
- an object of the present invention is to provide a chair having a flection adjustment module for a lumbar support part, in which a backrest part and a support part are provided for supporting a back portion of a user, and the flection adjustment module movably coupled between the backrest part and the support part to adjust flection of the lumbar support part is provided, so that flection suitable for the user may be formed, and thus a waist portion of the user may be supported more comfortably.
- an object of the present invention is to provide a chair having a flection adjustment module for a lumbar support part, in which the flection of the lumbar support part is adjustable in a stepwise manner by simply pulling up the flection adjustment module described above, so that a supporting force customized for each user may be provided through a simple scheme.
- a chair having a flection adjustment module for a lumbar support part, the chair including: a seat part; a support part coupled to the seat part; a backrest part coupled to an upper end of the support part so as to be disposed on an upper portion of the seat part, extending downward from the upper end of the support part, and including a lumbar support part bent corresponding to a waist portion of a user; and a flection adjustment module movably coupled between the backrest part and the support part to adjust flection of the lumbar support part.
- the flection adjustment module is fixedly coupled to the backrest part while being coupled to the support part so as to be vertically movable.
- the flection adjustment module includes: a connection member coupled to the backrest part and having a length extending toward the support part; a latching member mounted in the connection member to perform a pendular movement, and having a pin protruding toward the support part; an elastic member mounted on both sides of the latching member to allow the pendular movement to be elastically performed; and a step adjustment member coupled to the support part, and formed on a rear surface thereof with a step adjustment groove including one or more latching grooves in which the pin is inserted and seated.
- the step adjustment member further includes a pin guide groove for guiding a movement of the pin along an outer periphery of the step adjustment groove.
- the latching grooves are obliquely formed in a longitudinal direction of the step adjustment member.
- an insertion part of the latching groove into which the pin is inserted is formed at a position higher than a position of a seating part of the latching groove at which the pin is stopped.
- an upper surface of each of the latching grooves has a streamline shape.
- the latching grooves are formed on one side of the step adjustment groove in parallel to each other.
- the flection adjustment module further includes a cover member coupled to the connection member to cover the one surface of the connection member, and having a fluctuation groove corresponding to a fluctuation radius of the pin.
- the step adjustment member further includes a connection member guide groove formed on both sides of the step adjustment groove to guide a movement of the connection member, and the connection member has a protrusion part having a shape corresponding to the connection member guide groove.
- the backrest part and the support part are provided for supporting the back portion of the user, and the flection adjustment module movably coupled between the backrest part and the support part to adjust the flection of the lumbar support part is provided, so that the flection suitable for the user can be formed, and thus the waist portion of the user can be supported more comfortably.
- the flection of the lumbar support part is adjustable in a stepwise manner by simply pulling up the flection adjustment module described above, so that the supporting force customized for each user may be provided through a simple scheme.
- FIG. 1 is a view schematically showing a chair having a flection adjustment module for a lumbar support part according to an embodiment of the present invention.
- FIG. 2 is a view schematically showing a configuration of the flection adjustment module according to an embodiment of the present invention.
- FIGS. 3( a ) and 3( b ) are views schematically showing an internal configuration of the flection adjustment module according to an embodiment of the present invention.
- FIG. 4 is a view schematically showing a cover member of the flection adjustment module according to an embodiment of the present invention.
- FIG. 5 is a view schematically showing an operation state of the flection adjustment module according to an embodiment of the present invention.
- FIGS. 6( a ) and ( b ) are views schematically showing a state in which flection of the lumbar support part is adjusted according to an embodiment of the present invention.
- FIG. 1 is a view schematically showing a chair having a flection adjustment module for a lumbar support part according to an embodiment of the present invention
- FIG. 2 is a view schematically showing a configuration of the flection adjustment module according to an embodiment of the present invention
- FIGS. 3( a ) and 3( b ) are views schematically showing an internal configuration of the flection adjustment module according to an embodiment of the present invention
- FIG. 4 is a view schematically showing a cover member of the flection adjustment module according to an embodiment of the present invention
- FIG. 5 is a view schematically showing an operation state of the flection adjustment module according to an embodiment of the present invention
- FIGS. 6( a ) and 6( b ) are views schematically showing a state in which flection of the lumbar support part is adjusted according to an embodiment of the present invention.
- a chair having a flection adjustment module for a lumbar support part basically includes a seat part 100 , a support part 200 , a backrest part 300 , and a flexion adjustment module 400 .
- the seat part 100 is configured to have an appropriate area for allowing a user to be seated, and may include: a leg part 110 provided at a lower portion of the seat part 100 with an adjustable height; an assembly 120 including an adjustment lever 125 that enables at least one of height adjustment of the leg part 110 and angle adjustment of the support part 200 ; and an armrest part 130 mounted on both sides of the seat part 100 to support an aim of the user.
- the support part 200 is configured to support a back portion of the user while being coupled with the backrest part 300 , in which a lower end of the support part 200 is coupled with the seat part 100 to provide a supporting force.
- the support part 200 may extend upward from one side of the seat part 100 .
- the support part 200 may include an elastic material to provide a suitable elastic force while supporting against a leaning force of the back portion of the user, and as shown in FIG. 6 , in order to increase efficiency, the support part 200 may substantially have an “S” shape in which an upper bent portion is spread in an upward direction when viewed from a right side.
- the support part 200 may further include at least one of a headrest part 250 mounted on an upper portion of the support part 200 to support a head portion of the user, and a hanger part 260 mounted on the upper portion of the support part 200 while being disposed on a rear surface of the headrest part 250 to hang clothes of the user.
- the backrest part 300 is coupled to an upper end of the support part 200 so as to be disposed on an upper portion of the seat part 100 , extends downward from the upper end of the support part 200 , and includes a lumbar support part 350 bent corresponding to a waist portion of the user.
- the backrest part 300 may be formed of an elastic material so that the lumbar support part 350 may further protrude toward the waist portion of the user by an operation of the flection adjustment module 400 .
- the backrest part 300 may be configured as a frame formed therein with an opening and a mesh net (not shown) provided in the opening of the frame.
- a mesh net not shown
- the flection adjustment module 400 is movably coupled between the backrest part 300 and the support part 200 to adjust flection of the lumbar support part 350 .
- the flection adjustment module 400 may be fixedly coupled to the backrest part 300 while being coupled to the support part 200 so as to be vertically movable. Therefore, when the user pulls up the flection adjustment module 400 in an upward direction of the support part 200 while gripping the flection adjustment module 400 , since the backrest part 300 is coupled to the flection adjustment module 400 , the lumbar support part 350 is further bent. Accordingly, the lumbar support part 350 may protrude toward the waist portion of the user, so that the lumbar support part 350 may further make close contact with the waist portion of the user.
- the flection adjustment module 400 may include: a connection member 410 coupled to the backrest part 300 and having a length extending toward the support part 200 ; a latching member 420 mounted in the connection member 410 to perform a pendular movement, and having a pin 421 protruding toward the support part 200 ; an elastic member 430 mounted on both sides of the latching member 420 to allow the pendular movement to be elastically performed; and a step adjustment member 440 coupled to the support part 200 , and formed on a rear surface thereof with a step adjustment groove 441 including one or more latching grooves 442 in which the pin 421 is inserted and seated.
- components for allowing the connection member 410 to be coupled to the backrest part 300 and allowing the step adjustment member 440 to be coupled to the support part 200 may be additionally provided.
- connection member 410 may have a shape which allows components such as the latching member 420 and the elastic member 430 to be mounted on one surface of the connection member 410 .
- a protrusion groove 411 may be formed in an upper center of the one surface of the connection member 410
- an elastic member coupling groove 412 may be obliquely formed on both lower sides of the connection member 410 to correspond to right and left directions of the pendular movement of the latching member 420 .
- a protrusion part 413 protruding toward the support part 200 more than a center portion of the connection member 410 to form multiple steps may be provided on both sides of the connection member 410 .
- the protrusion part 413 may make close contact with a connection member guide groove 443 recessed on both sides of the step adjustment member 440 to form multiple steps, as shown in FIG. 3( b ) , so that the flection adjustment module 400 may be prevented from being separated to right and left when the flection adjustment module 400 is moved vertically.
- a cover member 450 having a fluctuation groove 451 corresponding to a fluctuation radius of the pin 421 may be coupled to the one surface of the connection member 410 . Therefore, components such as the latching member 420 and the elastic member 430 mounted inside the connection member 410 may be prevented from being separated.
- the latching member 420 has an upper portion mounted in the protrusion groove 411 and extends downward from the protrusion groove 411 to perform the pendular movement in the right and left directions, and the latching member 420 may be formed at right and left ends thereof with an elastic member mounting groove 422 in which the elastic member 430 is mounted.
- the elastic member 430 may be inserted and mounted between the elastic member coupling groove 412 and the elastic member mounting groove 422 to allow the pendular movement of the latching member 420 in the right and left directions to be elastically performed.
- the elastic member 430 may be a spring as shown in FIG. 3 , but is not limited thereto, and other components that may provide elasticity may be used.
- the latching grooves 442 formed in the step adjustment groove 441 of the step adjustment member 440 may be obliquely formed in a longitudinal direction of the step adjustment member 440 , and an insertion part 442 a of a latching groove 442 into which the pin 421 is inserted may be formed at a position higher than a position of a seating part 442 b of the latching groove 442 at which the pin 421 is stopped.
- an upper surface of each of the latching grooves 442 may have a streamline shape.
- the latching grooves 442 are formed on one side of the step adjustment groove 441 in parallel to each other, and the step adjustment member 440 further includes a pin guide groove 444 for guiding a movement of the pin 421 along an outer periphery of the step adjustment groove 441 .
- the pin 421 is inserted into the pin guide groove 444 formed along an outer periphery of the step adjustment groove 441 or the latching groove 442 formed in the step adjustment groove 441 so as to be moved.
- the flection adjustment module 400 when the pin 421 is located at a lowermost position (A) of the pin guide groove 444 , the flection adjustment module 400 is located at a lowermost position, so that the lumbar support part 350 may maintain only basic flection without additional protrusion.
- the pin 421 when the user grips and pulls up the flection adjustment module 400 , the pin 421 is fixedly inserted into a first latching groove (B) by an elastic force of the elastic member 430 after being moved in one fluctuation direction along the streamline shape of the upper surface of the latching groove 442 .
- the lumbar support part 350 gradually protrudes toward the waist portion of the user, so that the lumbar support part 350 may further make close contact with the waist portion of the user.
- the pin 421 may be located at the lowest position again after passing over (C) an upper surface of the third latching groove and moving along the pin guide groove 444 . Accordingly, the lumbar support part 350 may have the basic flection again by the elastic force.
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Abstract
Provided is a chair having a flection adjustment module for a lumbar support part, and more particularly, to a chair having a flection adjustment module for a lumbar support part, the chair including: a seat part; a support part coupled to the seat part; a backrest part coupled to an upper end of the support part so as to be disposed on an upper portion of the seat part, extending downward from the upper end of the support part, and including a lumbar support part bent corresponding to a waist portion of a user; and a flection adjustment module movably coupled between the backrest part and the support part to adjust flection of the lumbar support part.
Description
- The present invention relates to a chair having a flection adjustment module for a lumbar support part, and more particularly, to a chair having a flection adjustment module for a lumbar support part, in which a backrest part and a support part are provided for supporting a back portion of a user, and the flection adjustment module movably coupled between the backrest part and the support part to adjust flection of the lumbar support part is provided, so that flection suitable for the user is formed, and thus a waist portion of the user is supported more comfortably.
- In general, a chair is a mechanism for allowing a user to sit and relax, and various components such as a backrest, an armrest, and a headrest are additionally provided to provide various functions. Meanwhile, in modern society, a considerable amount of work is performed through a computer while sitting at a desk. Accordingly, a variety of chairs are being developed to provide more comfort to the user.
- As an example of a recently developed chair, a chair in which a lumbar support part for supporting a waist portion is additionally provided on a backrest is being manufactured, so that the chair may support the waist portion properly while a user is sitting on the chair so as to prevent the waist portion from being strained even when the user is seated on the chair for a long time, and a simple acupressure treatment effect is provided.
- Korean Patent No. 10-0427193, Korean Patent No. 10-0708303, and Korean Patent No. 10-1608737 disclose a conventional technique for providing a chair for supporting a waist portion.
- Korean Patent No. 10-0427193 discloses a lumbar support chair, which has a seat support on which hips are seated and is provided for allowing a back to be leaned against the chair, the lumbar support chair including: a lumbar support provided to be protrudable to a front side of a backrest; a rotation knob rotatably provided on a rear surface of the backrest; and a rotation bar for allowing the lumbar support to protrude to the front side of the backrest or to be withdrawn from the front side of the backrest according to a rotation of the rotation knob.
- Korean Patent No. 10-0708303 discloses a chair having a variable backrest, the chair including: a backrest in which a seat member having a predetermined elasticity is connected to a frame; and a waist support including a support member having an arc shape to maintain predetermined strength and having both ends connected to the frame with a bolt while forming a predetermined space between the support member and the seat member, including a lifting/lowering device connected to the support member with a distance adjustment device interposed therebetween to lift/lower the support member, and having a contact surface corresponding to a back shape of a user.
- In addition, Korean Patent No. 10-1608737 relates to a lumbar support device and a backrest unit of a chair including the same, in which the lumbar support device includes: a support frame having a communication hole; a lumbar support pad; and a back-and-forth movement adjustment unit for adjusting an amount of a back-and-forth movement of the lumbar support pad to a lumbar portion with respect to the support frame through the communication hole. Unlike the prior technique, in the above invention, a position of the lumbar support pad of the chair for supporting a waist portion of a seated person may be freely set in a vertical direction and a back-and-forth direction according to a body shape, and the lumbar support pad presses a backrest which supports the waist portion, so that it is possible to prevent an inconvenience from being caused by the lumbar support pad by making direct contact with the waist portion.
- In such conventional techniques, a lumbar support part for supporting a waist portion or a lumbar portion is separately provided on the backrest of the chair, thereby providing convenience to the user. However, in Korean Patent No. 10-0427193, Korean Patent No. 10-0708303, and Korean Patent No. 10-1608737, since the lumbar support part is separately provided, assembly is complicated, and a number of components constituting a device is increased, and since a number of processes is increased, a manufacturing cost of the chair is increased. In addition, an overall design of the chair may have no sense of unity due to the lumbar support part, so that aesthetic beauty is reduced, and thus consumers may not tend to choose the chair.
- Accordingly, the present invention proposes a chair having a flection adjustment module for a lumbar support part, capable of adjusting flexion of a backrest of the chair by a simple scheme without separately providing the lumbar support part.
- (Patent document 0001) Korean Patent No. 10-0427193 (registered on Apr. 2, 2004)
- (Patent document 0002) Korean Patent No. 10-0708303 (registered on Apr. 10, 2007)
- (Patent document 0003) Korean Patent No. 10-1608737 (registered on Mar. 29, 2016)
- Accordingly, in order to solve the problems described above, an object of the present invention is to provide a chair having a flection adjustment module for a lumbar support part, in which a backrest part and a support part are provided for supporting a back portion of a user, and the flection adjustment module movably coupled between the backrest part and the support part to adjust flection of the lumbar support part is provided, so that flection suitable for the user may be formed, and thus a waist portion of the user may be supported more comfortably.
- In addition, an object of the present invention is to provide a chair having a flection adjustment module for a lumbar support part, in which the flection of the lumbar support part is adjustable in a stepwise manner by simply pulling up the flection adjustment module described above, so that a supporting force customized for each user may be provided through a simple scheme.
- To achieve the objects described above, according to a preferred embodiment of the present invention, there is provided a chair having a flection adjustment module for a lumbar support part, the chair including: a seat part; a support part coupled to the seat part; a backrest part coupled to an upper end of the support part so as to be disposed on an upper portion of the seat part, extending downward from the upper end of the support part, and including a lumbar support part bent corresponding to a waist portion of a user; and a flection adjustment module movably coupled between the backrest part and the support part to adjust flection of the lumbar support part.
- In addition, according to a preferred embodiment of the present invention, the flection adjustment module is fixedly coupled to the backrest part while being coupled to the support part so as to be vertically movable.
- In addition, according to a preferred embodiment of the present invention, the flection adjustment module includes: a connection member coupled to the backrest part and having a length extending toward the support part; a latching member mounted in the connection member to perform a pendular movement, and having a pin protruding toward the support part; an elastic member mounted on both sides of the latching member to allow the pendular movement to be elastically performed; and a step adjustment member coupled to the support part, and formed on a rear surface thereof with a step adjustment groove including one or more latching grooves in which the pin is inserted and seated.
- In addition, according to a preferred embodiment of the present invention, the step adjustment member further includes a pin guide groove for guiding a movement of the pin along an outer periphery of the step adjustment groove.
- In addition, according to a preferred embodiment of the present invention, the latching grooves are obliquely formed in a longitudinal direction of the step adjustment member.
- In addition, according to a preferred embodiment of the present invention, an insertion part of the latching groove into which the pin is inserted is formed at a position higher than a position of a seating part of the latching groove at which the pin is stopped.
- In addition, according to a preferred embodiment of the present invention, an upper surface of each of the latching grooves has a streamline shape.
- In addition, according to a preferred embodiment of the present invention, the latching grooves are formed on one side of the step adjustment groove in parallel to each other.
- In addition, according to a preferred embodiment of the present invention, the flection adjustment module further includes a cover member coupled to the connection member to cover the one surface of the connection member, and having a fluctuation groove corresponding to a fluctuation radius of the pin.
- In addition, according to a preferred embodiment of the present invention, the step adjustment member further includes a connection member guide groove formed on both sides of the step adjustment groove to guide a movement of the connection member, and the connection member has a protrusion part having a shape corresponding to the connection member guide groove.
- As described above, according to the chair having the flection adjustment module for the lumbar support part of the present invention, the backrest part and the support part are provided for supporting the back portion of the user, and the flection adjustment module movably coupled between the backrest part and the support part to adjust the flection of the lumbar support part is provided, so that the flection suitable for the user can be formed, and thus the waist portion of the user can be supported more comfortably.
- In addition, according to the present invention, the flection of the lumbar support part is adjustable in a stepwise manner by simply pulling up the flection adjustment module described above, so that the supporting force customized for each user may be provided through a simple scheme.
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FIG. 1 is a view schematically showing a chair having a flection adjustment module for a lumbar support part according to an embodiment of the present invention. -
FIG. 2 is a view schematically showing a configuration of the flection adjustment module according to an embodiment of the present invention. -
FIGS. 3(a) and 3(b) are views schematically showing an internal configuration of the flection adjustment module according to an embodiment of the present invention. -
FIG. 4 is a view schematically showing a cover member of the flection adjustment module according to an embodiment of the present invention. -
FIG. 5 is a view schematically showing an operation state of the flection adjustment module according to an embodiment of the present invention. -
FIGS. 6(a) and (b) are views schematically showing a state in which flection of the lumbar support part is adjusted according to an embodiment of the present invention. - Terms and words used in the specification and the claims shall not be interpreted as commonly-used or dictionary meanings, but shall be interpreted as meanings and concepts relevant to the technical idea of the present invention based on a principle that the inventor may appropriately define the concept of the term to explain his/her invention in the best way.
- Therefore, the embodiment disclosed in the specification and the configurations depicted in the drawings represent the most preferred embodiment of the present invention only, and do not represent all of the technical ideas of the present invention, so it should be understood that various equivalents and modifications may be substituted for the embodiment and the configurations at the time of filing of the present application.
- Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
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FIG. 1 is a view schematically showing a chair having a flection adjustment module for a lumbar support part according to an embodiment of the present invention,FIG. 2 is a view schematically showing a configuration of the flection adjustment module according to an embodiment of the present invention,FIGS. 3(a) and 3(b) are views schematically showing an internal configuration of the flection adjustment module according to an embodiment of the present invention,FIG. 4 is a view schematically showing a cover member of the flection adjustment module according to an embodiment of the present invention,FIG. 5 is a view schematically showing an operation state of the flection adjustment module according to an embodiment of the present invention, andFIGS. 6(a) and 6(b) are views schematically showing a state in which flection of the lumbar support part is adjusted according to an embodiment of the present invention. - Referring to
FIGS. 1 to 6 , a chair having a flection adjustment module for a lumbar support part according to the present invention basically includes aseat part 100, asupport part 200, abackrest part 300, and aflexion adjustment module 400. - The
seat part 100 is configured to have an appropriate area for allowing a user to be seated, and may include: aleg part 110 provided at a lower portion of theseat part 100 with an adjustable height; anassembly 120 including anadjustment lever 125 that enables at least one of height adjustment of theleg part 110 and angle adjustment of thesupport part 200; and anarmrest part 130 mounted on both sides of theseat part 100 to support an aim of the user. - The
support part 200 is configured to support a back portion of the user while being coupled with thebackrest part 300, in which a lower end of thesupport part 200 is coupled with theseat part 100 to provide a supporting force. Thesupport part 200 may extend upward from one side of theseat part 100. In this case, thesupport part 200 may include an elastic material to provide a suitable elastic force while supporting against a leaning force of the back portion of the user, and as shown inFIG. 6 , in order to increase efficiency, thesupport part 200 may substantially have an “S” shape in which an upper bent portion is spread in an upward direction when viewed from a right side. - Meanwhile, the
support part 200 may further include at least one of aheadrest part 250 mounted on an upper portion of thesupport part 200 to support a head portion of the user, and ahanger part 260 mounted on the upper portion of thesupport part 200 while being disposed on a rear surface of theheadrest part 250 to hang clothes of the user. - The
backrest part 300 is coupled to an upper end of thesupport part 200 so as to be disposed on an upper portion of theseat part 100, extends downward from the upper end of thesupport part 200, and includes alumbar support part 350 bent corresponding to a waist portion of the user. Thebackrest part 300 may be formed of an elastic material so that thelumbar support part 350 may further protrude toward the waist portion of the user by an operation of theflection adjustment module 400. - Meanwhile, as shown in
FIG. 1 , thebackrest part 300 may be configured as a frame formed therein with an opening and a mesh net (not shown) provided in the opening of the frame. When a portion of the chair making direct contact with the back portion of the user is configured as the mesh net as described above, it may be advantageous in terms of ventilation on the back portion of the user. - The
flection adjustment module 400 is movably coupled between thebackrest part 300 and thesupport part 200 to adjust flection of thelumbar support part 350. Preferably, theflection adjustment module 400 may be fixedly coupled to thebackrest part 300 while being coupled to thesupport part 200 so as to be vertically movable. Therefore, when the user pulls up theflection adjustment module 400 in an upward direction of thesupport part 200 while gripping theflection adjustment module 400, since thebackrest part 300 is coupled to theflection adjustment module 400, thelumbar support part 350 is further bent. Accordingly, thelumbar support part 350 may protrude toward the waist portion of the user, so that thelumbar support part 350 may further make close contact with the waist portion of the user. - As a detailed configuration of the
flection adjustment module 400, as shown inFIGS. 2 to 5 , theflection adjustment module 400 may include: aconnection member 410 coupled to thebackrest part 300 and having a length extending toward thesupport part 200; alatching member 420 mounted in theconnection member 410 to perform a pendular movement, and having apin 421 protruding toward thesupport part 200; anelastic member 430 mounted on both sides of thelatching member 420 to allow the pendular movement to be elastically performed; and astep adjustment member 440 coupled to thesupport part 200, and formed on a rear surface thereof with astep adjustment groove 441 including one ormore latching grooves 442 in which thepin 421 is inserted and seated. In addition, components for allowing theconnection member 410 to be coupled to thebackrest part 300 and allowing thestep adjustment member 440 to be coupled to thesupport part 200 may be additionally provided. - The
connection member 410 may have a shape which allows components such as the latchingmember 420 and theelastic member 430 to be mounted on one surface of theconnection member 410. For example, as shown inFIG. 3(a) , aprotrusion groove 411 may be formed in an upper center of the one surface of theconnection member 410, and an elasticmember coupling groove 412 may be obliquely formed on both lower sides of theconnection member 410 to correspond to right and left directions of the pendular movement of the latchingmember 420. - In addition, a
protrusion part 413 protruding toward thesupport part 200 more than a center portion of theconnection member 410 to form multiple steps may be provided on both sides of theconnection member 410. Theprotrusion part 413 may make close contact with a connectionmember guide groove 443 recessed on both sides of thestep adjustment member 440 to form multiple steps, as shown inFIG. 3(b) , so that theflection adjustment module 400 may be prevented from being separated to right and left when theflection adjustment module 400 is moved vertically. - In addition, as shown in
FIG. 4 , acover member 450 having afluctuation groove 451 corresponding to a fluctuation radius of thepin 421 may be coupled to the one surface of theconnection member 410. Therefore, components such as the latchingmember 420 and theelastic member 430 mounted inside theconnection member 410 may be prevented from being separated. - The latching
member 420 has an upper portion mounted in theprotrusion groove 411 and extends downward from theprotrusion groove 411 to perform the pendular movement in the right and left directions, and the latchingmember 420 may be formed at right and left ends thereof with an elasticmember mounting groove 422 in which theelastic member 430 is mounted. In other words, theelastic member 430 may be inserted and mounted between the elasticmember coupling groove 412 and the elasticmember mounting groove 422 to allow the pendular movement of the latchingmember 420 in the right and left directions to be elastically performed. Meanwhile, theelastic member 430 may be a spring as shown inFIG. 3 , but is not limited thereto, and other components that may provide elasticity may be used. - Meanwhile, the latching
grooves 442 formed in thestep adjustment groove 441 of thestep adjustment member 440 may be obliquely formed in a longitudinal direction of thestep adjustment member 440, and an insertion part 442 a of a latchinggroove 442 into which thepin 421 is inserted may be formed at a position higher than a position of aseating part 442 b of the latchinggroove 442 at which thepin 421 is stopped. Moreover, an upper surface of each of the latchinggrooves 442 may have a streamline shape. The latchinggrooves 442 are formed on one side of thestep adjustment groove 441 in parallel to each other, and thestep adjustment member 440 further includes apin guide groove 444 for guiding a movement of thepin 421 along an outer periphery of thestep adjustment groove 441. In other words, thepin 421 is inserted into thepin guide groove 444 formed along an outer periphery of thestep adjustment groove 441 or the latchinggroove 442 formed in thestep adjustment groove 441 so as to be moved. - Referring to
FIGS. 5 and 6 , when thepin 421 is located at a lowermost position (A) of thepin guide groove 444, theflection adjustment module 400 is located at a lowermost position, so that thelumbar support part 350 may maintain only basic flection without additional protrusion. In this case, when the user grips and pulls up theflection adjustment module 400, thepin 421 is fixedly inserted into a first latching groove (B) by an elastic force of theelastic member 430 after being moved in one fluctuation direction along the streamline shape of the upper surface of the latchinggroove 442. When above operations are performed several times, as shown inFIG. 6(b) , thelumbar support part 350 gradually protrudes toward the waist portion of the user, so that thelumbar support part 350 may further make close contact with the waist portion of the user. - Meanwhile, when the
flection adjustment module 400 is further pulled up after thepin 421 is inserted into athird latching groove 442 based onFIG. 5 , finally, thepin 421 may be located at the lowest position again after passing over (C) an upper surface of the third latching groove and moving along thepin guide groove 444. Accordingly, thelumbar support part 350 may have the basic flection again by the elastic force. - Although the embodiments of the present invention has been described in detail, the present invention is not limited to the above embodiments, and various modifications may be made without departing from the scope and spirit of the present invention. Therefore, the embodiments of the present invention should be construed in a descriptive sense only and not for purposes of limitation, and the scope of the technical idea of the present invention is not limited by the embodiments.
- Therefore, the embodiments described above are illustrative in all aspects, and should not be construed as limiting. The scope of the present invention is defined by the appended claims, and should be construed as encompassing all technical ideas within the scope of equivalents thereof
Claims (8)
1. A chair having a flection adjustment module for a lumbar support part, the chair comprising:
a seat part;
a support part (200) coupled to the seat part;
a backrest part coupled to an upper end of the support part so as to be disposed on an upper portion of the seat part, extending downward from the upper end of the support part, and including a lumbar support part bent corresponding to a waist portion of a user; and
a flection adjustment module movably coupled between the backrest part and the support part to adjust flection of the lumbar support part,
wherein the flection adjustment module includes:
a connection member coupled to the backrest part and having a length extending toward the support part;
a latching member mounted in the connection member to perform a pendular movement, and having a pin protruding toward the support part;
an elastic member mounted on both sides of the latching member to allow the pendular movement to be elastically performed; and
a step adjustment member coupled to the support part, and formed on a rear surface thereof with a step adjustment groove including one or more latching grooves in which the pin is inserted and seated,
the latching grooves are obliquely formed in a longitudinal direction of the step adjustment member,
the latching member is mounted in a protrusion groove formed in an upper center of one surface of the connection member, and
the elastic member is mounted in an elastic member coupling groove obliquely formed on both lower sides of the connection member.
2. The chair of claim 1 , wherein the flection adjustment module is fixedly coupled to the backrest part while being coupled to the support part so as to be vertically movable.
3. The chair of claim 1 , wherein the step adjustment member further includes a pin guide groove for guiding a movement of the pin along an outer periphery of the step adjustment groove.
4. The chair of claim 1 , wherein an insertion part of the latching groove into which the pin is inserted is formed at a position higher than a position of a seating part of the latching groove at which the pin is stopped.
5. The chair of claim 1 , wherein an upper surface of each of the latching grooves has a streamline shape.
6. The chair of claim 1 , wherein the latching grooves are formed on one side of the step adjustment groove in parallel to each other.
7. The chair of claim 1 , wherein the flection adjustment module further includes a cover member coupled to the connection member to cover the one surface of the connection member, and having a fluctuation groove corresponding to a fluctuation radius of the pin.
8. The chair of claim 1 , wherein the step adjustment member further includes a connection member guide groove formed on both sides of the step adjustment groove to guide a movement of the connection member, and
the connection member has a protrusion part having a shape corresponding to the connection member guide groove.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020180103219A KR101967201B1 (en) | 2018-08-31 | 2018-08-31 | Chair with lumbar support flexion control module |
KR10-2018-0103219 | 2018-08-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20200069064A1 true US20200069064A1 (en) | 2020-03-05 |
Family
ID=66167556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/503,925 Abandoned US20200069064A1 (en) | 2018-08-31 | 2019-07-05 | Chair having flection adjustment module for lumbar support part |
Country Status (3)
Country | Link |
---|---|
US (1) | US20200069064A1 (en) |
EP (1) | EP3616567A1 (en) |
KR (1) | KR101967201B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11337526B2 (en) * | 2018-04-19 | 2022-05-24 | Cramer Llc | Chair having pliable backrest and methods for same |
Families Citing this family (5)
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US10477973B2 (en) * | 2016-11-01 | 2019-11-19 | Ergogenesis Workplace Solutions, Llc | Ergonomic chair |
KR102382087B1 (en) * | 2020-06-09 | 2022-04-04 | 김란순 | Elastic flexion control module of chair |
KR102324422B1 (en) | 2021-04-05 | 2021-11-11 | 주식회사 체어로 | Chair frame with tilting backrest |
KR102505888B1 (en) * | 2022-08-11 | 2023-03-06 | 주식회사 다원체어스 | Backlest with lumbar support and chair with the same |
KR102541521B1 (en) * | 2022-12-29 | 2023-06-13 | (주)아트스틸퍼니처 | Lumbar support adjustment device for chair back |
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KR101759479B1 (en) * | 2016-11-08 | 2017-07-20 | 주식회사 다원체어스 | Back of chair |
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2018
- 2018-08-31 KR KR1020180103219A patent/KR101967201B1/en active IP Right Grant
-
2019
- 2019-07-02 EP EP19183905.9A patent/EP3616567A1/en not_active Withdrawn
- 2019-07-05 US US16/503,925 patent/US20200069064A1/en not_active Abandoned
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US11779121B2 (en) | 2018-04-19 | 2023-10-10 | Cramer Llc | Chair having pliable backrest and methods for same |
Also Published As
Publication number | Publication date |
---|---|
KR101967201B1 (en) | 2019-04-09 |
EP3616567A1 (en) | 2020-03-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DAWON CHAIR CO., LTD., KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, GYU YOUN;REEL/FRAME:049676/0491 Effective date: 20190624 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |