CN113974359A - Backrest angle adjusting device of lumbar support cushion - Google Patents
Backrest angle adjusting device of lumbar support cushion Download PDFInfo
- Publication number
- CN113974359A CN113974359A CN202011473969.2A CN202011473969A CN113974359A CN 113974359 A CN113974359 A CN 113974359A CN 202011473969 A CN202011473969 A CN 202011473969A CN 113974359 A CN113974359 A CN 113974359A
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- China
- Prior art keywords
- angle adjusting
- backrest
- lumbar support
- rotating shaft
- support cushion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 210000001624 hip Anatomy 0.000 abstract description 8
- 210000004197 pelvis Anatomy 0.000 description 9
- 210000002414 leg Anatomy 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 208000008035 Back Pain Diseases 0.000 description 2
- 208000008930 Low Back Pain Diseases 0.000 description 2
- 208000008765 Sciatica Diseases 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 210000001217 buttock Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 210000004705 lumbosacral region Anatomy 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 208000002193 Pain Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 210000001981 hip bone Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
Images
Classifications
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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
- A47C7/02—Seat parts
- A47C7/021—Detachable or loose seat cushions
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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
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/16—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats of legless type, e.g. with seat directly resting on the floor; Hassocks; Pouffes
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
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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
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/08—Fluid mattresses
-
- 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
- A47C7/02—Seat parts
- A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
-
- 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—Supports for the head or the back
- A47C7/40—Supports for the head or the back for the back
- A47C7/46—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
- A47C7/462—Supports 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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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H1/00—Apparatus for passive exercising; Vibrating apparatus; Chiropractic devices, e.g. body impacting devices, external devices for briefly extending or aligning unbroken bones
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pain & Pain Management (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Therapy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The present invention relates to a backrest angle adjusting device for a lumbar support cushion, and more particularly, to a backrest angle adjusting device for a lumbar support cushion which can lightly support a hip region when a user sits on the ground in a state where the user places the backrest angle adjusting device on a proper position of the body. The invention comprises the following steps: a pair of fixed frames (200) having accommodating parts (210) with upper parts and front parts opened and respectively fixedly arranged at the left and right sides of the rear end part of the soft cushion (500); a pair of support frames (300) having lower portions drawn into the receiving portions (210) of the fixed frames (200) and rotatably coupled to the hinges (400), and upper portions coupled to both left and right lower portions of the backrest (600), respectively; and an angle adjustment member (100) rotatably provided to the fixed frame (200) so that a contact surface (121) is brought into contact with the rear surface of the support frame (300) and the position of the backrest (600) is maintained in a moved state.
Description
Technical Field
The present invention relates to a backrest angle adjusting apparatus for a lumbar support cushion, and more particularly, to a backrest angle adjusting apparatus for a lumbar support cushion which can lightly support a backrest angle of a lumbar support cushion of a hip region when a user sits on the ground in a state where the user places the backrest angle at an appropriate position on the body.
Background
Generally, the seat cushion is made of a material or a shape capable of lightly supporting the buttocks portion when sitting on the floor, and is not configured for the purpose of maintaining the physiological curvature of the spine (backbone).
Therefore, when the seat cushion is placed on a flat chair and both feet are placed on the ground to sit naturally, the pelvis is more likely to curve backward than in the forward-bending (bending) state of the pelvis in a standing position, and the coccyx, sacrum, and spine are also curved backward.
As a result, the spine is in a state of retroflexion due to loss of physiological flexion (retroflexion state), and the weight of the upper body of the trunk is applied to the coccyx, the periphery of the ischia, the lumbar or lumbar intervertebral disc at the lower part, and the rear side of the thigh, so that the burden on the waist or coccyx is increased.
Further, since it is easy to sit with the legs, the weight of the upper body of the trunk applied to the ischial peripheries becomes uneven, and there is a possibility that the bones are deformed.
On the other hand, as shown in fig. 1 and 2, there is disclosed a posture improvement auxiliary seat for a seat having a size and a thickness that can seat the buttocks of a person, in which a front center of a seat surface portion 6 curved in a concave shape is depressed in a belt shape at a rear center, a protrusion portion 10 protruding gradually from a side toward a depressed portion 7 is formed at the front of the seat surface portion, a fan-shaped inclined surface inclined gradually in a forward inclination direction is formed in the vicinity of a bottom surface of the protrusion portion 10, a convex curved portion 16 is formed at a center of a lower portion, and stopper portions 17 and 18 are formed at front and rear on an extension line thereof (korean laid-open patent publication No. 10-2009-0063959).
When the chair is seated by using the auxiliary seat a, since the legs are urged to spread, it is difficult to sit with the legs being hooked, the pelvis is bent forward, and the physiological curvature of the spine is caused, so that the weight of the upper half of the trunk applied to the coccyx, the periphery of the ischia, the lumbar or lumbar intervertebral disc of the lower part, and the rear side of the thigh is uniformly distributed to the leg, and therefore, the leg can be exercised, the burden applied to the waist or coccyx can be reduced, and since the structure in which the pelvis is hardly put in a bent backward state is possible, it is possible to prevent the spine from being in a bent backward posture for a long time, and to improve the sitting posture.
As described above, when sitting on a chair or a flat floor, the above-described booster seat a can maintain an accurate sitting posture in the case where the pelvis is stably supported using a booster having a depressed central portion, thereby providing a great help to the health of the spine.
On the other hand, in the human body, the pelvis (pelvis) is a funnel-shaped bone constituting the waist, and is a bone composed of the fifth lumbar vertebra, the sacrum, the coccyx, and the right and left hip bones.
Further, the lumbar vertebrae are portions between the thoracic vertebrae and the sacral vertebrae in the spine, called lumbar vertebrae, and a human is composed of 5 vertebrae.
The conventional booster seat a can maintain an accurate sitting posture by supporting the pelvic region, but cannot expect a more comfortable sitting feeling because of no elastic feeling, and cannot support the lumbar region, and therefore, if the seat is seated for a long time, an excessive load is applied to the lumbar region, which may cause a negative injury and pain.
Therefore, in order to solve the above problems, as shown in korean patent No. 10-1155211 (granted date: 2012, 06, 04), a lumbar support cushion was developed to be used, the lumbar support cushion including: a cushion, the upper center of which is curved and concaved in a manner corresponding to the shape of the pelvis; a pair of fixed frames respectively fixed on the left and right sides of the rear end of the soft cushion; a pair of supporting frames, the lower end of which is combined with the upper part of the fixed frame in a rotatable way by taking a hinge as a center; and a backrest, wherein the left and right sides of the lower part are respectively fixed and combined in a manner of being fixed on the upper part of the supporting frame.
However, since the lumbar support cushion is used by adjusting the angle of the backrest so that the lumbar support cushion is positioned in a position corresponding to the physical condition of the user, the user cannot support the waist of the user easily and lightly, and thus the comfort is lowered, which causes a problem of lumbago such as lumbago.
Documents of the prior art
Patent document
Korean Utility model No. 20-0422757
Korean laid-open patent No. 10-2009-0095639
Korean granted patent No. 10-1155211
Non-patent document
NAVER (www.naver.com) encyclopedia
Disclosure of Invention
The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a backrest angle adjusting device for a lumbar support cushion, which allows a user using the lumbar support cushion to adjust the angle of a backrest so that the lumbar support cushion is positioned to meet his or her own physical condition, thereby allowing the user to elastically and stably support his or her waist when sitting for a long period of time, thereby eliminating the fatigue of the user.
The backrest angle adjusting means of the lumbar support cushion of the present invention for achieving the above object comprises: a pair of fixing frames 200 having receiving parts 210 opened at upper and front surfaces thereof and respectively fixed to left and right sides of a rear end of the soft pad 500; a pair of support frames 300, the lower portion of which is drawn into the receiving portion 210 of the fixing frame 200 and rotatably coupled to the hinge 400, and the upper portion of which is coupled to the left and right sides of the lower portion of the backrest 600; and an angle adjusting member 100 rotatably provided to the fixing frame 200 to make the contact surface 121 contact with the rear surface of the support frame 300 and maintain a state in which the position of the backrest 600 is moved.
On the other hand, the angle adjusting member 100 includes: a rotating shaft 110 rotatably inserted into the fixing frame 200; a polygonal angle adjustment protrusion 120 formed to protrude from an intermediate outer side of the rotation shaft 110 so as to form a multiple contact surface 121 having different distances from the center of the rotation shaft 110; and a handle part 130 having an outer diameter larger than that of the rotary shaft 110, formed at one end of the rotary shaft 110, for rotating the rotary shaft 110 inserted into the fixed frame 200 in one direction by applying a load in one direction in a state where the handle part 130 is held by a hand, thereby bringing the contact surface 121 into contact with the rear surface of the support frame 300 and adjusting the angle of the backrest 600.
Further, a lead-in hole 220 is formed through one side portion of the fixing frame 200 forming the receiving portion 210, the lead-in hole 220 having an inner diameter larger than an outer diameter of the rotating shaft 110 forming the polygonal angle adjusting protrusion 120, and a through hole 230 having the same center and inner diameter as the outer diameter of the rotating shaft 110 is formed through the other side portion of the fixing frame 200, so that the rotating shaft 110 forming the polygonal angle adjusting protrusion 120 is easily introduced into the receiving portion 210 through the lead-in hole 220, and the other side portion of the rotating shaft 110 into which the angle adjusting protrusion 120 is introduced into the receiving portion 210 is rotatably coupled to and supported by the through hole 230.
On the other hand, it is preferable that the installation groove 111, into which the fixing member 700 such as an O-ring is inserted, is recessed at the other side portion of the rotation shaft 110 positioned at the through hole 230, and the rotation shaft 110 is supported by the fixing member 700 such as an O-ring and smoothly rotates, is drawn out from the through hole 230, and is not separated.
Further, the hemispherical protrusions 131 are formed in the same number as the contact surfaces 121 formed on the polygonal angle-adjusting protrusions 120 on one side surface of the handle part 130, and the drawing grooves for drawing in and out the protrusions 131 are formed by being recessed on the outer side of one side of the fixed frame 200 where the drawing holes 220 are formed, so that when the rotating shaft 110 inserted into the fixed frame 200 is rotated in one direction by applying a load in one direction in a state where the handle part 130 is held by a hand, the protrusions 131 can be drawn out from the drawing grooves and the protrusions 131 can be drawn into the other drawing grooves according to the position of contact with the contact surfaces 121 of the angle-adjusting protrusions 120 formed on the rotating shaft 110, and thus the amount of rotation of the rotating shaft 110 can be known.
The backrest angle adjusting device of the lumbar support cushion of the present invention has an effect that a user using the lumbar support cushion can adjust the upright angle of the backrest so that the lumbar support cushion is positioned to correspond to his/her body by rotating the hinge shaft in one side direction and adjusting the upright angle of the backrest by applying a load in one side direction in a state where the handle part is grasped by a hand.
On the other hand, according to the present invention, the present invention has an effect that the backrest elastically and stably supports the waist of the user when sitting on the lumbar support cushion for a long time, thereby eliminating the feeling of fatigue of the user.
Drawings
Fig. 1 is a perspective view of a conventional posture improvement support seat for a seat.
Fig. 2 is a perspective view of a conventional posture improvement support seat for a seat.
Fig. 3 is an exploded perspective view showing an assembled state of the backrest angle adjusting device of the present invention.
Figure 4 shows a perspective view of the lumbar support cushion assembled with the backrest angle adjusting device of the present invention.
Fig. 5 is a perspective view showing an angle adjusting member for a backrest angle adjusting device of a lumbar support cushion of the present invention.
Fig. 6 is a front view showing an angle adjusting member for a backrest angle adjusting device of a lumbar support cushion of the present invention.
Fig. 7 is a perspective view showing a fixed frame for a backrest angle adjusting means of a lumbar support cushion of the present invention.
Fig. 8 is a sectional view showing an installation state of the backrest angle adjusting means of the lumbar support cushion of the present invention.
Fig. 9 is an enlarged cross-sectional view showing the installation state of the angle adjustment member for the backrest angle adjustment device of the lumbar support cushion of the present invention.
Fig. 10 is an operation state diagram showing a state where the backrest angle is adjusted by the backrest angle adjusting means of the lumbar support cushion of the present invention.
Description of reference numerals
100: angle adjusting part
110: rotating shaft
120: angle adjusting protrusion
121: contact surface
130: handle part
131: protrusion part
200: fixing frame
210: is not accommodated
220: lead-in hole
230: through hole
240: lead-in and lead-out groove
300: supporting frame
400: hinge assembly
500: soft cushion
600: back support
Detailed Description
Hereinafter, a specific technical structure of the present invention will be described in more detail with reference to the accompanying drawings.
Fig. 3 is an exploded perspective view showing an assembled state of the back angle adjusting device of the present invention, fig. 4 is a perspective view showing a lumbar support cushion assembled by the back angle adjusting device of the present invention, figure 5 is a perspective view showing an angle adjusting member for a backrest angle adjusting means of the lumbar support cushion of the present invention, figure 6 is a front view showing an angle adjusting means for a back angle adjusting device of the lumbar support cushion of the present invention, figure 7 is a perspective view showing a fixed frame for a backrest angle adjusting means of a lumbar support cushion of the present invention, figure 8 is a sectional view showing the arrangement state of the backrest angle adjusting means of the lumbar support cushion of the present invention, figure 9 is an enlarged sectional view showing the arrangement state of the angle adjusting member for the backrest angle adjusting means of the lumbar support cushion of the present invention, fig. 10 is an operation state diagram showing a state where the backrest angle is adjusted by the backrest angle adjusting means of the lumbar support cushion of the present invention.
As shown in fig. 3 to 10, the backrest angle adjusting means of the lumbar support cushion of the present invention comprises: the method comprises the following steps: a pair of fixing frames 200 having receiving parts 210 opened at upper and front surfaces thereof and respectively fixed to left and right sides of a rear end of the soft pad 500; a pair of support frames 300, the lower portion of which is drawn into the receiving portion 210 of the fixing frame 200 and rotatably coupled to the hinge 400, and the upper portion of which is coupled to the left and right sides of the lower portion of the backrest 600; and an angle adjusting member 100 rotatably provided to the fixing frame 200 to make the contact surface 121 contact with the rear surface of the support frame 300 and maintain a state in which the position of the backrest 600 is moved.
On the other hand, the angle adjusting member 100 includes: a rotating shaft 110 rotatably inserted into the fixing frame 200; a polygonal angle adjustment protrusion 120 formed to protrude from an intermediate outer side of the rotation shaft 110 so as to form a multiple contact surface 121 having different distances from the center of the rotation shaft 110; and a handle part 130 having an outer diameter larger than that of the rotation shaft 110 and formed at one end of the rotation shaft 110.
A lead-in hole 220 is formed through one side of the fixing frame 200 forming the receiving portion 210, the lead-in hole 220 having an inner diameter larger than an outer diameter of the rotating shaft 110 forming the polygonal angle-adjusting protrusion 120, and a through hole 230 having the same center and inner diameter as the outer diameter of the rotating shaft 110 is formed through the other side of the fixing frame 200.
On the other hand, hemispherical protrusions 131 are formed on one side surface of the handle part 130 in the same number as the contact surfaces 121 of the polygonal angle-adjusting protrusions 120, and a drawing groove for drawing in and out the protrusions 131 is formed by being recessed in an outer side portion of the fixing frame 200 on one side where the drawing hole 220 is formed.
In the backrest angle adjusting apparatus for a lumbar support cushion of the present invention as described above, a pair of fixed frames 200 forming receiving portions 210 are fixedly provided at the rear left and right sides of a cushion 500, respectively, and an angle adjusting member 100 is rotatably provided at the fixed frames 200, so that the lower portions of a pair of support frames 300, the upper portions of which are coupled to the lower left and right sides of a backrest 600, respectively, are introduced into the receiving portions 210, and a contact surface 121 is brought into contact with the support frames 300 of the lumbar support cushion coupled rotatably, centering on a hinge 400, to maintain a state in which the position of the backrest 600 is moved.
In this case, the rotation shaft 110 of the angle adjusting member 100 is inserted through an insertion hole 220 formed at one side portion of the fixed frame 200, and is inserted into a position of the insertion and extraction groove through a protrusion 131 formed at one side surface of the handle portion 130, and the polygonal-shaped angle adjusting protrusion 120 formed to protrude at the middle outer side portion of the rotation shaft 110 so as to form the multiple contact surface 121 is maintained in a state of being inserted into the receiving portion 210, and the other side portion of the rotation shaft 110 is coupled to be rotated in one and the other directions by being inserted into a through hole 230, and the through hole 230 is formed at the other side portion of the fixed frame 200 so as to have the same center and inner diameter as the outer diameter of the rotation shaft 110.
On the other hand, a fixing member 700 such as an O-ring is inserted into a mounting groove 111 formed in a recess at the other side of the rotary shaft 110 positioned in the through-hole 230 to prevent the rotary shaft 110 from being drawn out of the through-hole 230 by a working force, and the rotary shaft 110 is supported by the fixing member 700 to be smoothly rotated.
Accordingly, when a user who uses the lumbar support cushion applies a load while holding the handle portion 130 with his or her hand so that the lumbar support cushion is positioned in accordance with his or her body, the rotation shaft 110 is rotated in a direction in which the load is applied to the handle portion 130, and the angle adjustment protrusion 120 accommodated in the accommodation portion 210 is simultaneously rotated in the direction in which the rotation shaft 110 is rotated by the rotation of the rotation shaft 110, and is rotated to a position in which one contact surface 121 of the multiple contact surfaces 121 formed on the outer side surface is in contact with the rear surface of the support frame 300, thereby adjusting the angle of the backrest 600.
In this case, as shown in fig. 6, 9 and 10, when the contact surface 121 formed at the position closest to the center of the rotation shaft 110 is in contact with the rear surface of the support frame 300 with respect to the angle of the backrest 600, the upright state of the backrest 600 in the vertical direction is maintained, and when the contact surface 121 formed at the position farthest from the center of the rotation shaft 110 is rotated so as to be in contact with the rear surface of the support frame 300, the backrest 600 is rotated in the direction of the cushion 500 around the hinge 400 to maintain the obliquely upright state.
Therefore, when a user using the lumbar support cushion holds the handle portion 130 with his or her hand, the user can use the lumbar support cushion by adjusting the standing angle of the backrest 600 by applying a load in one direction and rotating the rotary shaft 110 in the direction to which the load is applied, so that the user can adjust the standing angle of the backrest 600 so that the lumbar support cushion is positioned in accordance with his or her body.
The present invention described above is not limited to the above description, and various substitutions, modifications, and changes may be made by those skilled in the art without departing from the technical spirit of the present invention.
Claims (4)
1. A back angle adjusting device of a lumbar support cushion is characterized by comprising:
a pair of fixed frames (200) having accommodating parts (210) with upper parts and front parts opened and respectively fixedly arranged at the left and right sides of the rear end part of the soft cushion (500);
a pair of support frames (300) having lower portions drawn into the receiving portions (210) of the fixed frames (200) and rotatably coupled to the hinges (400), and upper portions coupled to both left and right lower portions of the backrest (600), respectively; and
and an angle adjustment member (100) rotatably provided on the fixed frame (200) so that a contact surface (121) is in contact with the rear surface of the support frame (300) and the position of the backrest (600) is maintained in a moving state.
2. The backrest angle adjusting means of a lumbar support cushion according to claim 1, characterized in that said angle adjusting means (100) comprises:
a rotating shaft (110) inserted into the fixed frame (200) in a rotatable manner;
a polygonal angle adjustment protrusion (120) formed to protrude from the middle outer side of the rotating shaft (110) so as to form multiple contact surfaces (121) having different distances from the center of the rotating shaft (110); and
and a handle part (130) having an outer diameter larger than that of the rotating shaft (110) and formed at one end of the rotating shaft (110).
3. The backrest angle adjusting apparatus for a lumbar support cushion according to claim 1, wherein a lead-in hole (220) is formed through one side portion of the fixing frame (200) forming the receiving portion (210), an inner diameter of the lead-in hole (220) is larger than an outer diameter of the rotating shaft (110) forming the polygonal angle adjusting protrusion (120), and a through hole (230) having a center and an inner diameter identical to the outer diameter of the rotating shaft (110) is formed through the other side portion of the fixing frame (200).
4. The backrest angle adjusting apparatus of claim 2, wherein hemispherical protrusions (131) are formed in the same number as the contact surfaces (121) of the angle adjusting protrusions (120) formed in a polygonal shape on one side of the handle part (130), and a lead-in and lead-out groove for leading in and out the protrusions (131) is formed by being recessed in an outer side portion of one side of the fixing frame (200) where the lead-in hole (220) is formed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2020-0092777 | 2020-07-27 | ||
| KR1020200092777A KR102359635B1 (en) | 2020-07-27 | 2020-07-27 | Lumbar support seat angle adjustment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113974359A true CN113974359A (en) | 2022-01-28 |
Family
ID=79731648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011473969.2A Pending CN113974359A (en) | 2020-07-27 | 2020-12-14 | Backrest angle adjusting device of lumbar support cushion |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR102359635B1 (en) |
| CN (1) | CN113974359A (en) |
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| JPS6190454U (en) * | 1984-11-19 | 1986-06-12 | ||
| KR200422757Y1 (en) | 2006-03-09 | 2006-08-01 | 지순덕 | Correct posture cushion |
| JP3988169B1 (en) | 2006-12-04 | 2007-10-10 | 智之 根本 | Chair posture improvement auxiliary chair |
| KR102141819B1 (en) * | 2018-12-31 | 2020-08-06 | 전재현 | Sleeping aids for chairs |
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2020
- 2020-07-27 KR KR1020200092777A patent/KR102359635B1/en active Active
- 2020-12-14 CN CN202011473969.2A patent/CN113974359A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101731861A (en) * | 2009-12-30 | 2010-06-16 | 韩汝辉 | Seat capable of adjusting tilting angle of back |
| CN102860687A (en) * | 2011-08-16 | 2013-01-09 | 尹旭 | Lumbar support seat |
| KR101839782B1 (en) * | 2016-10-27 | 2018-03-19 | 김란순 | Device for tilting the lumbar support of chair seat back |
| CN107752523A (en) * | 2017-12-07 | 2018-03-06 | 南京市雨花台区知识产权促进中心 | A kind of lift intelligent chair of adjustable cushion temperature |
| KR102017988B1 (en) * | 2018-04-10 | 2019-09-03 | 주식회사 포빅 | Wearable and adjustrable the lumbar support system for correct and comfort sitting posture |
| CN108720394A (en) * | 2018-05-29 | 2018-11-02 | 安吉森虎家具有限公司 | A computer chair equipped with adjustable armrests |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20220013622A (en) | 2022-02-04 |
| KR102359635B1 (en) | 2022-02-08 |
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Application publication date: 20220128 |