WO2020080699A1 - Chaise unitaire - Google Patents

Chaise unitaire Download PDF

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Publication number
WO2020080699A1
WO2020080699A1 PCT/KR2019/012517 KR2019012517W WO2020080699A1 WO 2020080699 A1 WO2020080699 A1 WO 2020080699A1 KR 2019012517 W KR2019012517 W KR 2019012517W WO 2020080699 A1 WO2020080699 A1 WO 2020080699A1
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WO
WIPO (PCT)
Prior art keywords
link
elastic member
link member
link shaft
external force
Prior art date
Application number
PCT/KR2019/012517
Other languages
English (en)
Korean (ko)
Inventor
고기문
Original Assignee
오스템임플란트 주식회사
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 오스템임플란트 주식회사 filed Critical 오스템임플란트 주식회사
Publication of WO2020080699A1 publication Critical patent/WO2020080699A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
    • A61G15/10—Parts, details or accessories
    • A61G15/12—Rests specially adapted therefor, e.g. for the head or feet
    • A61G15/125—Head-rests
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
    • A61G15/02—Chairs with means to adjust position of patient; Controls therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
    • A61G15/10—Parts, details or accessories
    • A61G15/12—Rests specially adapted therefor, e.g. for the head or feet

Definitions

  • the present invention relates to a unit chair, and more particularly, to a unit chair including a link portion capable of adjusting the angle of the headrest.
  • the unit chair is a device for accommodating the examinee in a dentistry or the like, and generally includes a headrest supporting the examinee's head, a backrest supporting the back, and a legrest supporting the hips and legs. In addition to this, it may further include a doctor table and a drinking fountain for mounting a dental procedure tool such as a handpiece.
  • the headrest is formed on the top of the backrest, and it is preferable that the angle can be adjusted according to the purpose of medical treatment, the body shape of the patient, and the convenience of the medical staff. If you look at the situation of medical treatment that requires the angle adjustment of the headrest, the medical staff often hold the treatment tool in one hand, so you cannot use both hands freely, or the head of the examinee often places a load on the headrest.
  • the examinee intends to adjust the angle of the headrest in a direction (forward direction) where the head is bowed forward, it is preferable to adjust the angle by simply pushing the headrest lightly without operating a separate button or lever.
  • the above-mentioned object is achieved by introducing a mechanism capable of rotational movement in only one direction using a ratchet or the like into the connection portion between the headrest and the backrest.
  • a mechanism capable of rotational movement in only one direction using a ratchet or the like into the connection portion between the headrest and the backrest.
  • a part of the ratchet may be damaged or worn out, resulting in loss of function, which may cause durability problems.
  • the height of the head of the examinee can be adjusted, and at the same time, an appropriate face angle for treatment can be generated, thereby providing convenience for treatment have.
  • the restraint state of the two joints is preferably configured to be released through one button or lever.
  • the present invention has been devised in view of the above problems, and aims to provide a unit chair capable of adjusting the forward angle of the headrest, but ensuring the durability of the supporting structure when a force in the reverse direction is applied. There is this.
  • Another object of the present invention is to provide a simple mechanism configuration capable of introducing a one-way angle adjustment function to the two-joint headrest of the unit chair.
  • Another object of the present invention is to provide a configuration of a two-joint headrest capable of angular adjustment in one direction while releasing the motion restraint state of two joints with only one button.
  • a unit chair including a link portion capable of adjusting an angle of a headrest according to an embodiment of the present invention for achieving the above object, wherein the link portion comprises: a first link member fixed to a backrest of the unit chair; A first link shaft; And a second link member having one end linked to the first link member by the first link shaft and rotatable about a central axis of the first link shaft, wherein the first link shaft has a second link member.
  • a plurality of first ratchet grooves arranged in an annular shape around a central axis of one link shaft are formed, and the second link member includes: a first elastic member; A plurality of first pins arranged in an annular shape, supported by the first elastic member, and fastened to the first ratchet groove by the restoring force of the first elastic member to prevent rotation of the second link member in one direction; And when an external force is applied, release the fastening of the first ratchet groove and the first pin by transmitting the external force to the elastic member, and a release unit enabling rotation in both directions of the second link member. have.
  • the unit chair the second link shaft; And a third link member having a headrest fixed to one surface and being connected to the opposite end of the one end of the second link member by the second link shaft so as to be rotatable about a central axis of the second link shaft. It may further include.
  • a plurality of grooves arranged in an annular shape around a central axis of the second link shaft is formed on one surface of the second link shaft
  • the second link member includes: a second elastic member; And a plurality of second pins arranged in an annular shape, supported by the second elastic member, and fastened to the groove by the restoring force of the second elastic member, wherein the release unit is applied when the external force is applied.
  • the groove is a second ratchet groove and the second pin is fastened to the second ratchet groove, it is preferable to prevent rotation of the third link member in one direction.
  • the release unit a button unit to which the external force is applied; And an operating member receiving the external force from the button portion and simultaneously transmitting the external force to the first elastic member and the second elastic member.
  • a roller or a ball may be formed at each end of the first pin fastened to the first ratchet.
  • the angle adjustment of the forward direction of the headrest of the unit chair is freely possible, but the durability of the supporting structure can be secured when a force in the reverse direction is applied.
  • FIG. 1 is an exemplary view showing the appearance of a unit chair according to an embodiment of the present invention.
  • FIG. 2 is a view showing the configuration of the link portion of the unit chair according to an embodiment of the present invention.
  • Figure 3 is an exploded view showing the configuration of the link portion of the unit chair according to an embodiment of the present invention.
  • FIG 4 is a view showing the configuration of a first link shaft according to an embodiment of the present invention.
  • FIG. 5 is a view showing a fastening state of the first pin and the first link shaft according to an embodiment of the present invention.
  • FIG. 6 is a view showing the configuration of the release portion and the pin according to an embodiment of the present invention.
  • the unit chair 10 of the present invention may include a legrest 11, a backrest 13, a headrest 15 and a link portion 100.
  • the headrest 15 supports the head of the examinee
  • the backrest 13 is a configuration for supporting the back of the examinee
  • the legrest 11 is a configuration for supporting the leg of the examinee.
  • the link portion 100 is a configuration that can adjust the angle of the headrest (15). That is, the headrest 15 is connected to the backrest 13 and basically equipped with a function of supporting the load of the head of the examinee, while the headrest 15 is provided in the front and rear direction of the head of the examinee according to convenience during medical treatment. The angle adjustment operation is possible.
  • FIG. 2 is a view showing the configuration of the link portion of the unit chair according to an embodiment of the present invention.
  • Figure 3 is an exploded view showing the configuration of the link portion of the unit chair according to an embodiment of the present invention. 3, the central axis 141 of the first link shaft 140 is shown. Thus, by rotating the second link portion 120 around the central axis 141 of the first link shaft 140, it is possible to move the head of the examinee forward or straighten the head.
  • FIG. 4 is a view showing the configuration of the first link shaft 140 according to an embodiment of the present invention. 3 and 4, a plurality of first ratchet grooves arranged annularly around a central axis 141 of the first link shaft 140 on one surface of the first link shaft 140 ( 142) is formed, the second link member 120, the first elastic member 121; Arranged in an annular shape, supported by the first elastic member 121, and fastened to the first ratchet groove 142 by the restoring force of the first elastic member 121, of the second link member 120.
  • a plurality of first pins 122 preventing rotation in one direction; And when external force is applied, release the fastening of the first ratchet groove 142 and the first pin 122 by transmitting the external force to the elastic member, and rotate in both directions of the second link member 120. It may include a release unit 125 to enable.
  • the first link shaft 140 may be fixed to the first link member 110 through the first key 143.
  • Figure 4 (a) is a front view of the first link shaft 140
  • Figure 4 (b) is a right side view of the second link shaft 140
  • Figure 4 (c) is a section shown in Figure 4 (b) It is a sectional view of A-A '. 4 (b)
  • a plurality of first ratchet grooves 142 may be arranged in an annular shape on one surface of the first link shaft 140.
  • the center of the annular arrangement is preferably the central axis 141 of the first link shaft 140.
  • the first ratchet groove 142 is arranged at an equal angle around the central axis 141.
  • each of the first ratchet grooves 142 is inclined on one side (the 'B' direction in FIG. 5), and vertical or the first pin 122 on the other side (the 'A' direction in FIG. 5). It is desirable to have a predetermined shape that can restrain the motion of).
  • the first pin 122 is to prevent rotation of the second link member 120 in one direction. It is possible. In other words, when the head of the examinee tries to extend to the rear rather than the front, this means that the second link member 120 should be rotated in the reverse direction, but the first pin 122 and the first ratchet groove ( Due to the fastening state of 141), since the movement of the first pin 122 in the direction of 'A' in FIG. 5 is impossible, the reverse rotation is impossible. Accordingly, the first pin 122 functions to prevent rotation of the second link member 120 in one direction corresponding to the reverse direction.
  • first pins 122 are also arranged in an annular shape, so that a plurality of pieces can be fastened to the first ratchet groove 142, so that the force applied to the fastened parts is distributed, thereby improving durability of parts. have. It is preferable that the first pin 122 is also annularly arranged at an equal angle around the central axis 141 like the first ratchet groove 141.
  • the number of the first pin 122 is preferably a factor of the number of the first ratchet groove (141). In this way, by configuring such that the relationship between the drainage and the divisor, many of the individual pins of the plurality of first pins 122 can be fastened to the first ratchet groove 142, and the number of the first ratchet grooves 141 is large. By utilizing the configuration of the individual grooves, it is possible to adjust the rotation angle of the fine second link member.
  • the first pin 122 is preferably composed of six individual pins, and the first ratchet groove 142 is composed of twelve individual grooves. This has the effect that the support strength of the fastening part of the pin and the ratchet is improved, and the durability is improved as compared to the general ratchet groove using one clamp.
  • the release unit 125 transmits the external force to the first elastic member 121 to deform the first elastic member 121 to And a configuration for releasing the fastening state of the ratchet groove 142 and the first pin 122.
  • the release unit 126 may be directly bound to the first elastic member 121, but as illustrated in FIG. 3, external force is applied to the first elastic member 121 via the first pin 122. It may be composed of a connection structure that delivers.
  • the unit chair 10 the second link shaft 150; And a headrest 15 is fixed to one surface, and the second link shaft 150 is connected to the opposite end of the one end of the second link member 120 by the second link shaft 150.
  • a third link member 130 rotatable about the central axis 151 may be further included.
  • the second link shaft 150 may be fixed to the third link member 130 through the second key 153.
  • the second link member 120 further includes a first body 128 and a second body 129 that are mutually assembled, the first pin 122, the first elastic member 121, the second pin (124), it is preferable to accommodate the second elastic member 123 and the operating member 127, and supports the button 126, the first link shaft 140 and the second link shaft 150.
  • a plurality of grooves (not shown) arranged annularly around the central axis 151 of the second link shaft 150 is formed on one surface of the second link shaft 150, and the second link member is , The second elastic member 123; And a plurality of second pins 124 arranged in an annular shape, supported by the second elastic member 123, and fastened to the groove by the restoring force of the second elastic member 123, and When the external force is applied, the release unit 125 transfers the external force to the second elastic member 123 to release the fastening of the groove and the second pin 124, and the third link member ( It is desirable to enable rotation in both directions of 130).
  • the third link member 130 It can be configured to prevent rotation in one direction. In this way, by further including a fastening configuration of the second ratchet groove (not shown) and the second pin 123, it is possible to more conveniently adjust the posture of the head of the patient.
  • the shape of the second ratchet groove (not shown) and the second pin 123 may be configured with the same mechanism with reference to the shapes of the first ratchet groove 142 and the first pin 122.
  • the central axis 141 of the first link shaft 140 and the central axis 151 of the second link shaft 150 are parallel, and external force is not applied to the release unit 125, the The direction in which the second link member 120 is rotatable and the direction in which the third link member 130 is rotatable are preferably opposite to each other.
  • the posture of the head of the examinee can be more conveniently adjusted. That is, it is easy to lean the second link member 120 forward to increase the height of the head, and then adjust the face of the examinee at an angle suitable for treatment by twisting the third link member 130 toward the rear of the head of the examinee. Becomes
  • the second pin 124 may be configured to prevent rotation of the third link member 130 in both directions when fastened to the groove.
  • the groove (not shown) may take the form of a general groove that can accommodate the second pin 123. In this case, when an external force is not applied to the release unit 125, since the fastening of the second pin and the groove (not shown) is not released, the second link member 120 of the third link member 130 ) Relative rotational motion is constrained in both directions.
  • the release unit 125 includes a button unit 126 to which the external force is applied; And an operating member 127 receiving the external force from the button portion 126 and simultaneously transmitting the external force to the first elastic member 121 and the second elastic member 123.
  • a roller (not shown) or a ball (not shown) may be formed at each end of the first pin 122 that is fastened to the first ratchet 142. In this way, by introducing the rolling element to the end of the first pin 122, it is possible to more easily rotate the second link member 120.
  • the roller (not shown) or ball (not shown) configuration is preferably applied to the second pin 124 in the same way.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

La présente invention concerne une chaise unitaire et, plus précisément, une chaise unitaire comprenant une partie de liaison capable d'ajuster l'angle d'un appui-tête. Dans une chaise unitaire selon un mode de réalisation de la présente invention, la partie de liaison comprend : un premier élément de liaison fixé à un dossier de la chaise unitaire ; une première tige de liaison ; un second élément de liaison dont une partie d'extrémité est liée au premier élément de liaison à l'aide de la première tige de liaison afin de pouvoir tourner autour de l'axe central de la première tige de liaison, une pluralité de premières rainures de cliquet alignées sous une forme annulaire autour de l'axe central de la première tige de liaison étant formées sur une surface de la première tige de liaison, et le second élément de liaison peut comprendre : un premier élément élastique ; une pluralité de premières broches, qui sont alignées sous une forme annulaire, qui sont portées à l'aide du premier élément élastique, et qui sont attachées aux premières rainures de cliquet à l'aide de la force de restauration du premier élément élastique afin d'empêcher la rotation unidirectionnelle du second élément de liaison ; une partie de libération pour transmettre la force externe à l'élément élastique lorsque la force externe est appliquée, afin de libérer la mise en prise de la première rainure de cliquet et de la première broche, et permettant la rotation bidirectionnelle du second élément de liaison.
PCT/KR2019/012517 2018-10-15 2019-09-26 Chaise unitaire WO2020080699A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2018-0122238 2018-10-15
KR1020180122238A KR102157423B1 (ko) 2018-10-15 2018-10-15 유니트 체어

Publications (1)

Publication Number Publication Date
WO2020080699A1 true WO2020080699A1 (fr) 2020-04-23

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PCT/KR2019/012517 WO2020080699A1 (fr) 2018-10-15 2019-09-26 Chaise unitaire

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WO (1) WO2020080699A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220287902A1 (en) * 2019-09-26 2022-09-15 Planmeca Oy Adjustment mechanism for a headset of a treatment chair

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58188023U (ja) * 1982-06-08 1983-12-14 吉田精工株式会社 歯科治療用椅子のヘツドレスト傾動調整装置
KR200154963Y1 (ko) * 1995-10-04 1999-08-16 류정열 자동차의 주차 브레이크 구조
KR200376407Y1 (ko) * 2004-12-04 2005-03-11 (주)한림덴텍 유니트 체어용 헤드레스트
JP2008113761A (ja) * 2006-11-01 2008-05-22 Takara Belmont Co Ltd 歯科治療椅子の枕装置
KR20100011419U (ko) * 2009-05-14 2010-11-24 신원덴탈(주) 유니트 체어

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0698913A (ja) * 1992-09-18 1994-04-12 G C:Kk 歯科治療用椅子のヘッドレストの角度付与装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58188023U (ja) * 1982-06-08 1983-12-14 吉田精工株式会社 歯科治療用椅子のヘツドレスト傾動調整装置
KR200154963Y1 (ko) * 1995-10-04 1999-08-16 류정열 자동차의 주차 브레이크 구조
KR200376407Y1 (ko) * 2004-12-04 2005-03-11 (주)한림덴텍 유니트 체어용 헤드레스트
JP2008113761A (ja) * 2006-11-01 2008-05-22 Takara Belmont Co Ltd 歯科治療椅子の枕装置
KR20100011419U (ko) * 2009-05-14 2010-11-24 신원덴탈(주) 유니트 체어

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220287902A1 (en) * 2019-09-26 2022-09-15 Planmeca Oy Adjustment mechanism for a headset of a treatment chair

Also Published As

Publication number Publication date
KR20200042096A (ko) 2020-04-23
KR102157423B1 (ko) 2020-09-17

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