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WO2024014750A1 - Appareil de réglage de hauteur d'appui-tête et chaise le comprenant - Google Patents

Appareil de réglage de hauteur d'appui-tête et chaise le comprenant Download PDF

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Publication number
WO2024014750A1
WO2024014750A1 PCT/KR2023/009077 KR2023009077W WO2024014750A1 WO 2024014750 A1 WO2024014750 A1 WO 2024014750A1 KR 2023009077 W KR2023009077 W KR 2023009077W WO 2024014750 A1 WO2024014750 A1 WO 2024014750A1
Authority
WO
WIPO (PCT)
Prior art keywords
headrest
height adjustment
adjustment device
guide block
installation portion
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.)
Ceased
Application number
PCT/KR2023/009077
Other languages
English (en)
Korean (ko)
Inventor
윤대호
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sidiz Inc
Original Assignee
Sidiz Inc
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.)
Filing date
Publication date
Application filed by Sidiz Inc filed Critical Sidiz Inc
Priority to JP2025500754A priority Critical patent/JP2025521963A/ja
Priority to AU2023306064A priority patent/AU2023306064A1/en
Priority to EP23839844.0A priority patent/EP4555899A1/fr
Priority to CN202380052496.4A priority patent/CN119604215A/zh
Priority to CA3261555A priority patent/CA3261555A1/fr
Publication of WO2024014750A1 publication Critical patent/WO2024014750A1/fr
Anticipated expiration legal-status Critical
Priority to US19/018,582 priority patent/US20250143468A1/en
Ceased legal-status Critical Current

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Classifications

    • 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
    • A47C7/38—Supports for the head or the back for the head, e.g. detachable
    • 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
    • A47C1/036—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a head-rest

Definitions

  • the present invention relates to a headrest height adjustment device and a chair including the same (HEIGHT CONTROL APPARATUS FOR HEADREST AND CHAIR INCLUDING THE SAME). More specifically, the present invention relates to a headrest height adjustment device that not only facilitates the height adjustment but also allows the headrest to be stably positioned in the user's desired position. It relates to a headrest height adjustment device that can reduce operational trial and error by stopping at a low angle, and a chair including the same.
  • a headrest or neck rest (hereinafter collectively referred to as a 'headrest') is coupled to the upper side of the backrest of a chair to support the user's head or neck.
  • the posture when the user sits on the chair can be divided into a work sitting posture and a resting sitting posture. Basically, the body angle is changed to allow rest, and the headrest supports the user's head or neck to create a more comfortable posture. It plays a role in maintaining
  • Most headrests for chairs are fixed to the backrest or have a height adjustment function that adjusts them to fit the user's body.
  • the height adjustment function provides the advantage of improving user convenience by adjusting the height of the headrest according to the physical condition and sitting posture of the seated person.
  • Patent Publication No. 10-2012-0134232 published on December 12, 2012 (hereinafter referred to as 'prior art').
  • Figure 1 is a perspective view showing an example of a headrest height adjustment device according to the prior art
  • Figure 2 is a detailed exploded perspective view of the headrest height adjustment device included in the structure of Figure 1.
  • the headrest height adjustment device (70, referred to as 'height adjustment member' in the 'prior art' specification) according to the prior art, as shown in Figures 1 and 2, includes a backrest portion 20 and a backrest portion ( It is provided between the frame 30 provided to support the rear side of the 20), and the support member 40 is moved in the up and down direction via the installation member 50 in which the moving hole 52 is formed. The head is mounted thereon. The height of the rest (10) is adjusted.
  • the headrest height adjustment device 70 includes a locking groove member 72, an elastic protrusion 74, a receiving member 78, and an elastic bracket 76.
  • the locking groove member 72 is protruded to have a plurality of locking grooves 73 in the vertical direction on the front side of the support member 40, and the plurality of locking grooves 73 have the support member 40 in the vertical direction. It is disclosed that the hemispherical elastic protrusion 74 is elastically caught while being moved to limit the height.
  • the headrest height adjustment device 70 holds the headrest 10 when the user adjusts the height of the headrest 10 to suit his or her body conditions (body type) and then adjusts the headrest 10 to a predetermined initial setting.
  • the elastic protrusion 74 elastically caught in one of the plurality of locking grooves 73 moves to the adjacent locking groove 73 and is caught in the locking groove 73 at the point where the initial operating force is released. It has a mechanism to adjust the height.
  • the headrest height adjustment device 70 which operates by the mechanism described above, has a predetermined static friction force to prevent it from falling when the user arbitrarily leans the head once it has been adjusted to suit the user's body shape.
  • the initial operating force (or static friction force) must be set large. There is a need.
  • the moving hole 52 of the installation member 50 which guides the vertical movement of the support member 40 to ensure smooth movement of the support member 40, which is moved in the vertical direction for substantially height adjustment, is a support member ( 40), a certain amount of space must be provided for the front and back sides, but there is a problem in that high frequency noise is generated as the support member 40 is spaced back and forth during the height adjustment process by the user.
  • the frame 30 on which the installation member 50 is installed and the edge member 32 disposed at the front thereof serve as a sound box when noise is generated by the support member 40, thereby causing the noise to spread further.
  • the present invention was developed to solve the above-mentioned technical problem, and is a headrest height adjustment device that not only allows the user to adjust the height without trial and error at the desired position when adjusting the height of the headrest, but also prevents the generation of operating noise.
  • the purpose is to provide a chair including the same.
  • a headrest height adjustment device includes an installation part formed to be recessed forward on the back of the headrest main body, a support member provided at both left and right ends of the installation part, and the headrest main body corresponding to the installation part. It is coupled to the front of both left and right ends of the height-adjustable guide block and the height-adjustable guide block inserted between the back of the and the support member, and is in contact with the back of the headrest main body corresponding to the installation portion, and the initial provided by the user It includes a friction force generating unit that generates friction force corresponding to the reaction force of the operating force.
  • a plurality of locking grooves are formed on the front of the support member to be continuously grooved backward in the vertical direction, and a haptic locking portion that is elastically supported and caught by the plurality of locking grooves is provided on the back of the height adjustment guide block. It can be.
  • the friction force generating unit may be made of a flexible material.
  • the friction force generating portion may be made of a friction material that generates a predetermined friction force between the friction force generating portion and the rear surface of the headrest body corresponding to the installation portion.
  • the friction force generating unit may have a front end protruding from the front side of the height adjustment guide block to the rear surface of the headrest body corresponding to the installation portion to generate the friction force.
  • the haptic locking portion is elastically supported with a predetermined elastic force by an elastic block inserted into a support groove formed on the back of the height adjustment guide block and the elastic block, and a portion of the outer peripheral surface protrudes outside the support groove to support the support. It includes a haptic roller in contact with the locking groove of the member, and the friction force of the friction force generating unit may be set in consideration of the elastic force provided by the elastic block.
  • it may further include a rear cover panel coupled to the rear portion of the headrest main body and having a penetration portion formed so that the space corresponding to the installation portion communicates rearward.
  • left and right inner ends of the penetrating portion may be provided with a separation distance that allows the support member to be hidden from the outside.
  • the separation distance between the upper end of the installation part and the upper end of the support member may be formed to be greater than the vertical length of the pair of protruding ends of the height adjustment guide block.
  • it may further include a guide panel that is coupled to the rear surface of the headrest body corresponding to the installation portion and guides the vertical movement of the height adjustment guide block.
  • the length between the left and right ends of the guide panel may be provided to correspond to the separation distance between the pair of guide protrusion ends.
  • a chair according to an embodiment of the present invention may include the headrest height adjustment device described above.
  • a headrest height adjustment device and a chair including the same can achieve various effects as follows.
  • FIG. 1 is a perspective view showing an example of a headrest height adjustment device according to the prior art
  • Figure 2 is a detailed exploded perspective view of the headrest height adjustment device in the structure of Figure 1;
  • Figure 3 is a front perspective view (a) and a rear perspective view (b) showing a headrest height adjustment device according to an embodiment of the present invention
  • Figure 4 is an exploded perspective view of Figures 3 (a) and (b),
  • Figures 5a and 5b are exploded perspective views of the front and rear parts showing the installation of the headrest height adjustment device on the back of the headrest main body;
  • Figures 6a and 6b are partially cut away perspective views showing the installation sequence of the headrest height adjustment device for the installation part of Figure 5b;
  • Figure 7 is an exploded perspective view showing the installation of the height-adjustable guide block in the structure of Figure 3;
  • Figure 8 is an exploded perspective view showing the installation of the angle-adjustable rotation block in the structure of Figure 3;
  • Figures 9a and 9b are partial and full exploded perspective views for explaining the combination of the height-adjustable guide block and the angle-adjustable rotation block in the configuration of Figure 3;
  • FIGS. 10A and 10B are horizontal and vertical cross-sectional views for explaining the combination of the height-adjustable guide block and the angle-adjustable rotation block in the configuration of FIG. 3,
  • Figure 11 is a front view showing the headrest in the structure of Figure 3;
  • FIGS. 12A and 12B are a cross-sectional view (a) and a cut-away perspective view (b) taken along lines A-A and B-B of FIG. 11.
  • Headrest 111 Headrest body
  • Installation parts 114a, 114b Upper and lower hook holding holes
  • Insertion part 121 Rear cover panel
  • Haptic catch 171 Elastic block
  • Figure 3 is a front perspective view (a) and rear perspective view (b) showing a headrest height adjustment device according to an embodiment of the present invention
  • Figure 4 is an exploded perspective view of Figures 3 (a) and (b). am.
  • the headrest height adjustment device 140 may be coupled to the headrest assembly 110, as shown in FIGS. 3 and 4.
  • the headrest assembly 110 is formed to a size that supports the back of the user's head or neck, and includes the headrest body 111 that constitutes the entire skeleton. It includes a rear cover panel 121 coupled to the back of the headrest main body 111 and a front cushion panel 131 coupled to the front of the headrest main body 111 and directly in contact with the back of the user's head or neck. can do.
  • An installation portion 112 may be provided in the middle of the headrest main body 111, which has a slim rectangular space extending approximately up and down and back and forth.
  • the installation portion 112 may protrude toward the front of the headrest body 111, but may be formed to be concave forward at the rear of the headrest body 111. Additionally, the installation portion 112 may be concavely formed in a rectangular groove shape where the length in the vertical direction is substantially larger than the width in the left and right directions.
  • a headrest height adjustment device 140 may be coupled to such an installation portion 112.
  • the specific coupling of the headrest height adjustment device 140 to the installation portion 112 will be described in more detail later.
  • Support members 117 may be installed on both left and right ends of the installation unit 112 to prevent both ends of the headrest height adjustment device 140 from being separated rearward. More specifically, when the installation part 112 has a square groove shape protruding forward from the rear side of the headrest main body 111, as described above, the support member 117 is the part of the installation part 112. Each is fixed to the headrest main body 111 corresponding to the left and right edge ends, and the opposite width direction ends are provided so as to overlap the inside of the installation portion 112 by a predetermined length, so that the headrest height adjustment device 140 is moved backward. It may get caught.
  • the support member 117 may be set so that the height of the top is lower than the height of the top of the installation part 112 by a predetermined length.
  • the height of the upper end of the support member 117 is set lower than the height of the upper end of the installation part 112, and a gap that is not interfered with by the support member 117 in the front and rear directions is provided therebetween.
  • the support The space between the top of the member 117 and the top of the installation part 112 will be defined as the 'insertion part 119'.
  • the separation distance between the top of the installation portion 112 and the top of the support member 117 is the vertical length of a pair of protrusion ends 141a and 141b corresponding to both left and right ends of the height adjustment guide block 141, which will be described later. It can be formed larger.
  • the headrest height adjustment device 140 is inserted and installed through the insertion portion 119, which is defined as the space between the top of the support member 117 and the top of the installation portion 112.
  • the insertion portion 119 which is defined as the space between the top of the support member 117 and the top of the installation portion 112.
  • the rear portion of the headrest main body 111 corresponding to the insertion portion 119 has a movement limiting hook portion 118 on which the upper ends of both ends of the height adjustment guide block 141, which will be described later, are caught. ) may be provided.
  • the movement limiting hook part 118 has a hook end protruding rearward, so that when the height adjustment guide block 141, which will be described later, is inserted and engaged with a predetermined insertion force through the insertion part 119, the hook end is pressed. It serves to allow insertion and coupling of the height adjustment guide block 141 by forming a space at least between the support member 117 and the front and rear thickness of the height adjustment guide block 141.
  • the movement restriction hook portion 118 is a hook of the movement restriction hook portion 118 that is restored to its original position after the height adjustment guide block 141 is inserted into the installation portion 112 and moved downward a predetermined distance. It serves to prevent arbitrary removal through the insertion portion 119 by engaging with the end.
  • movement limiting hook portion 118 may also serve as a limit stopper that limits the upward movement of the height adjustment guide block 141 once installed on the installation portion 112.
  • the headrest height adjustment device 140 according to an embodiment of the present invention configured as described above can be easily installed in the insertion portion 119 without the need for a separate assembly tool such as a fastener for installation on the headrest 110. It provides the advantage of simple assembly using the movement limiting hook portion 118.
  • the front cushion panel 131 may be arranged to cover the front of the headrest body 111, as shown in FIGS. 3 and 4 .
  • the front cushion panel 131 may have a rear end made of a sturdy plastic material, and the front end may be formed as a cushion containing a sponge material.
  • a fitting groove 132 may be formed on the rear surface of the front cushion panel 131, into which the installation portion 112 protruding forward of the headrest main body 111 is fitted.
  • a rear cover panel 121 may be coupled to the rear portion of the headrest body 111.
  • the rear cover panel 121 may form the rear exterior of the headrest body 111.
  • the rear cover panel 121 is a portion that is caught by the support member 117 of the headrest height adjustment device 140 according to an embodiment of the present invention installed on the installation portion 112 of the headrest main body 111.
  • the rectangular penetrating portion 122 may be formed to be cut so that the remaining portions except for are penetrated and exposed to the rear.
  • the left and right inner ends of the penetrating portion 122 are provided at both left and right ends of the above-described installation portion 112, at least after the rear cover panel 121 is coupled to the rear portion of the headrest main body 111.
  • the support member 117 may be provided to have a separation distance that can be hidden from the outside when observed in the front-back direction (i.e., directly forward).
  • the headrest height adjustment device 140 is installed on the installation portion 112 of the headrest main body 111 from the rear through the penetration portion 122 of the rear cover panel 121. , It can be installed to be movable in the up and down direction along the penetrating part 122 by the operating force transmitted by the user's action to adjust the height.
  • the space corresponding to the installation part 112 is provided to fully communicate to the rear by the penetration part 122 of the rear cover panel 121, so that the installation part 112 acts as a sound box during operation. can be prevented.
  • the rear cover panel 121 may be hooked to the rear part of the headrest main body 111, and the front cushion panel 131 may be connected to the front part of the headrest main body 111 using a plurality of assembly screws 116. Can be screwed together.
  • the headrest body 111 In order to hook the rear cover panel 121 to the headrest body 111, the headrest body 111 has an upper hook hole 114a and a lower hook hole 114b with triangles at three locations. It is provided in the form of a vertex, and an upper hook 124a and a lower hook 124b may be similarly provided in the form of triangular vertices at three locations on the front of the rear cover panel 121.
  • the front cushion panel 131 has a tree snap (tree snap) fastened to the front of the headrest body 111 by the assembly screw 116.
  • Snap fitting holes 136 in which 135) is accommodated and press-fitted are provided at a number of locations, and on the front part of the rear cover panel 121, a screw fastening boss is fastened with an assembly screw 116 penetrating the trip snap 136. (126) may be provided in multiple locations.
  • the plurality of assembly screws 116 pass through the screw through holes (not indicated) formed in the headrest body 111 before coupling the front cushion panel 131 to the headrest body 111, thereby forming the tree snap 135. After being coupled to the front of the headrest body 111, they are respectively fastened to the screw fastening bosses 126 of the rear cover panel 121.
  • the front cushion panel 131 is brought into close contact with the front of the headrest main body 111, and the tree snap 135 is forcefully fitted into the snap fitting hole 136 provided on the back of the front cushion panel 131. In this way, the front cushion panel 131 is simply coupled to the front of the headrest main body 111.
  • the headrest height adjustment device 140 when installing the headrest height adjustment device 140 according to an embodiment of the present invention to the headrest 110, the headrest height adjustment device 140 can be installed without the need for a separate assembly tool such as a fastener, except when installing the tree snap 135 described above. Since the user can easily attach and detach the front cushion panel 131 to the headrest body 111 using an interference fit method, this provides the advantage of improving user convenience.
  • Figures 5A and 5B are exploded perspective views of the front and rear parts showing the installation of the headrest height adjustment device on the back of the headrest body
  • Figures 6A and 6B are the headrest height adjustment device on the installation portion of Figure 5B. This is an exploded perspective view showing the installation sequence.
  • the installation process of the headrest height adjustment device 140 according to an embodiment of the present invention to the installation portion 112 of the headrest main body 111 is briefly described as follows. .
  • the headrest height adjustment device 140 is installed in the installation portion 112, which is a space provided on the back of the headrest main body 111. Although installed, it may be installed in advance before the rear cover panel 121 is coupled to the headrest body 111.
  • the left and right height adjustment guide blocks 141 which will be described later among the configurations of the headrest height adjustment device 140 according to an embodiment of the present invention, are installed.
  • a guide panel 150 may be installed in advance to guide movement in the vertical direction while preventing shaking.
  • guide slots 112h formed to be long in the vertical direction are provided to be recessed forward, and are respectively inserted into a pair of guide slots 112h on the front of the guide panel 150 in the left and right directions.
  • a guide installation rib 150h may be formed to prevent shaking.
  • the length (i.e., width length) between the left and right ends of the guide panel 150 is a pair of guide protrusions 141a and 141b, respectively, protruding forward from the left and right ends of the height-adjustable guide block 141, which will be described later. 9a), it is desirable to provide it corresponding to the separation distance between them.
  • a friction force generating unit 160 which will be described later, is provided on each front surface of the pair of guide protrusions 141a and 141b of the height adjustment guide block 141, and the headrest height adjustment device 140 according to an embodiment of the present invention. ) moves up and down within the installation unit 112, forming a predetermined friction force at the area corresponding to the front of the installation unit 112, and each end forming a pair of guide protrusion ends 141a and 141b.
  • the car surface inner surface
  • the headrest height adjustment device 140 includes a support member ( The height of the upper end of 117) is positioned so that it is inserted through the space between the tops of the installation portion 112, and then, as shown in FIG. 6B, is placed on the back of the headrest body 111 forming the installation portion 112. It can be easily installed with a tight fit.
  • the movement limiting hook part 118 is pressed and the space between it and the support member 117 is formed. It can be moved downward through .
  • Figure 7 is an exploded perspective view showing the installation of the height-adjustable moving block in the configuration of Figure 3
  • Figure 8 is an exploded perspective view showing the installation of the angle-adjustable rotating block in the configuration of Figure 3
  • Figures 9a and 9b are Figure 3 It is a partially and fully exploded perspective view to explain the combination of the height-adjustable guide block and the angle-adjustable rotation block in the configuration
  • Figures 10a and 10b show the combination of the height-adjustable guide block and the angle-adjustable rotation block in the configuration of Figure 3.
  • This is a horizontal cross-sectional view and a vertical cross-sectional view for explanation.
  • a headrest height adjustment device 140 may be coupled to the installation portion 112 of the headrest 110 configured as described above. there is.
  • the headrest height adjustment device 140 is inserted and coupled to the inside of the installation portion 112, as shown in FIGS. 7 and 8, and adjusts the height of the headrest 110.
  • Angle adjustment in which the height-adjustable guide block 141, which is provided to move relative to the vertical direction inside the installation unit 112 when moving up and down, and the height-adjustable guide block 141 are rotatably connected around the left and right horizontal axes. It may include a rotation block 144.
  • the angle-adjustable rotation block 144 includes a hinge insertion end 144-1 for hinge coupling with the height-adjustment guide block 141, and a hinge insertion end 144-1. ) and may include a backrest coupling end (144-2) that mediates coupling to the front end of the backrest part of the chair, not shown.
  • the rear portion of the height-adjustable guide block 141 may be provided with a rotational coupling end 142 having a hinge hole 142h into which the rotational hinge axis 145 of the angle-adjustable rotational block 144, which will be described later, is inserted. .
  • a pair of rotational coupling ends 142 are provided at both left and right ends of the back of the height adjustment guide block 141, excluding the middle portion, to be spaced apart from each other by a predetermined distance (center portion), and a pair of spaced apart rotational ends are provided.
  • the hinge insertion end 144-1 of the angle-adjustable rotation block 144 may be positioned between the coupling ends 142 for hinge coupling.
  • a separation prevention protrusion 143a provided in the form of the body of the flat head bolt 143 is formed to protrude toward the center of the hinge hole, and the rotational hinge axis 145 ) may be provided with a C-ring 146 with a bent tip and an interference protrusion 146a that interferes with the separation prevention protrusion 143a.
  • the flat head bolt 143 provided with the departure prevention protrusion 143 is fastened to be exposed from the front of the height adjustment guide block 141 to the rear hinge hole 142, as shown in FIG. 9b. It could be wealth.
  • the flat head bolt 143 may be fastened to a bolt through hole (142h-b) formed through the height adjustment guide block 141 in the front and rear direction.
  • a ring fixing slit 142h-a into which the interference protrusion 146a of the C-ring 146 is inserted and seated may be formed inside the hinge hole 142h of the rotational coupling end 142.
  • the C-ring 146 is inserted into the outer peripheral surface of the ring intervening portion 145b among the components of the rotational hinge shaft 145, which will be described later, and is positioned in the hinge hole 142h of the rotational coupling end 142 in the left and right directions, respectively.
  • the interference protrusion 146a may be inserted into the ring fixing slit 142h-a provided to be open in the insertion direction.
  • the interference protrusion (146a) of the C-ring (146) inserted into the ring fixing slit (142h-a) is C- Since it is caught in a direction opposite to the insertion direction of the ring 146, arbitrary departure to the outside can be prevented.
  • the C-ring 146 has an interference protrusion 146a fixed to the ring fixing slit 142h-a, so that when the angle of the headrest main body 111 is adjusted by the user, it is attached to the angle adjustment rotation block 144.
  • the rotating hinge axis 145 which maintains a fixed state, it is rotatably coupled in conjunction with the height-adjustable guide block 141.
  • the inner peripheral surface of the C-ring 146 forms a predetermined rotational friction force with the outer peripheral surface of the ring insertion portion 145b of the hinge rotation axis 145, and allows the user to adjust the angle of the headrest main body 111.
  • the height-adjustable guide block 141 is rotated with respect to the angle-adjustable rotation block 144, the rotational motion is permitted, but when the user's manipulation force is removed, it can remain stationary at the corresponding position.
  • the hinge rotation axis 145 is angle-adjusted after its tip is fastened through the outside of each hinge hole 142h of the pair of rotation coupling ends 142, as shown in FIGS. 9A and 9B. It can be fastened to fit the shaft coupling end 144-4 formed inside the fastening hole 144-3 of the hinge insertion end 144-1 of the pivoting block 144.
  • the hinge rotation axis 145 includes a shaft body 145a and a ring intervening portion ( 145b) and a shaft fixing portion 145c, which is the distal end of the shaft body 145a and is fitted with the shaft coupling end 144-4 of the hinge insertion end 144-1.
  • the shaft fixing portion 145c is moved and fixed to the shaft coupling end 144-4 in the left and right insertion direction, but is prevented from rotating in conjunction with the C-ring 146 due to frictional force. It is preferably formed to have an outer surface of a non-circular cross section.
  • the height adjustment guide block 141 allows the user to rotate the hinge rotation axis 145 to the rotation coupling end 142 without a separate tool. It is joined to the open side of the hinge hole 142h, and the C-ring 146 already coupled to the ring intervening portion 145b is prevented from being externally separated through the separation prevention protrusion 143a of the flat head bolt 143.
  • the hinge cap 147 is also designed to be coupled in an interference fit manner, providing the advantage of allowing users to assemble it more easily.
  • the height adjustment guide block 141 is provided with a portion including the left and right ends of both left and right ends forming the installation portion 112 and being spaced a predetermined distance rearward from the front of the installation portion 112. It may be disposed between the support members 117 to prevent it from moving backward.
  • This prevention may be a concept that also includes the meaning of preventing the headrest 110 from moving forward with respect to the height adjustment guide block 141.
  • Figure 11 is a front view showing the headrest in the structure of Figure 3, and Figures 12a and 12b are a cross-sectional view (a) and a cut-away perspective view (b) taken along lines A-A and B-B of Figure 11.
  • a plurality of locking grooves 117a may be formed on the front surface of the support member 117, which are continuously arranged in the vertical direction and are recessed toward the rear.
  • haptic locking portions 170 that are elastically supported in the plurality of locking grooves 117a of the support member 117 may be provided on each rear surface of the left and right ends of the height adjustment guide block 141.
  • the haptic locking portion 170 includes an elastic block 171 inserted into the support groove 148 formed to be recessed forward on the rear surface of both ends of the height adjustment guide block 141, and a support groove ( A portion of the outer peripheral surface protrudes to the outside of 148) and may include a haptic roller 172 that contacts one of the plurality of locking grooves 117a of the support member 117 located at the rear by the elastic force of the elastic block 171. You can.
  • the support member 117 moves in the up and down direction in conjunction with the headrest main body 111.
  • the haptic in a stationary state
  • the haptic roller 172 of the locking portion 170 moves toward the adjacent locking groove 117a in the direction opposite to the direction of the moving support member 117, and moves into the locking groove 117a when the user's initial operating force is released. It is locked so that it can be accommodated.
  • the haptic locking portion 170 is shown and explained as being disposed in a single number at the center of each left and right end of the height adjustment guide block 141.
  • it is not necessarily limited to the number, and it is natural that two or more haptic rollers 172 can be provided in multiple numbers so that they are simultaneously caught in two or more locking grooves 117a in response to the design value of the initial operating force. will be.
  • an increase in the number of haptic locking parts 170 leads to an increase in the number of elastic blocks 171 that elastically support the haptic roller 172, and the increase in the number of elastic blocks 171 increases the initial value added by the user.
  • the headrest height adjustment device 140 includes a pair of guide protrusions corresponding to both ends of the height adjustment guide block 141, as shown in FIG. 12b ( It may further include a friction force generating portion 160 that is coupled to the front of the 141a and 141b and whose front is in contact with the rear of the headrest body 111 corresponding to the installation portion 112.
  • the friction force generating unit 160 is formed to have an approximately ' ⁇ ' shaped cross section and may be made of a flexible material.
  • Flexible material refers to a material whose shape is deformed when a predetermined external force is applied.
  • the friction force generating unit 160 may be made of a friction material that forms a predetermined frictional force with respect to the rear surface of the headrest main body 111 (meaning the rear surface forming the installation unit 112) that is in direct contact. .
  • This friction generating unit 160 may be fitted into the fitting protrusions 149 formed on the front surfaces of both ends of the height adjustment guide block 141.
  • the front end of the friction force generating unit 160 generates at least a predetermined frictional force or more at the front with respect to the back of the headrest main body 111 when inserting and installing the height adjustment guide block 141 into the installation unit 112. It is preferable that it is formed to protrude forward so as to have.
  • the amount of protrusion toward the front of the friction force generating unit 160 generates the predetermined friction force based on the front surface of the pair of guide protrusions 141a and 141b corresponding to both ends of the height adjustment guide block 141. It is desirable to design it to such an extent that
  • the friction force formed between the headrest body 111 by the friction force generator 160 is a static friction force, and the headrest body 111 is moved in the up and down direction by the initial operating force provided by the user through the headrest body 111. It may be a force that continuously acts as a predetermined reaction force on the headrest body 111 when it is moved.
  • the friction force generating portion 160 generates a predetermined reaction force. As it acts, the headrest main body 111 can be stopped at the user's desired height without trial and error even when the initial operating force is set large due to the elastic force of the elastic block 171.
  • the friction force generating unit 160 serves to eliminate the front and rear separation distance of the height adjustment guide block 141 located between the support member 117 and the front surface corresponding to the installation unit 112, thereby adjusting the height. By blocking the front and rear clearance (shaking) of the guide block 141 in advance, high-frequency noise can be prevented from occurring.
  • a chair (not shown) according to an embodiment of the present invention may include a headrest height adjustment device 140 according to an embodiment of the present invention configured as described above.
  • the angle adjustment rotation block 144 is coupled to a frame provided at the top of the backrest, not shown, and the height adjustment guide block 141 with respect to the angle adjustment rotation block 144. ) has already been explained that it is connected so that it can be rotated.
  • the headrest height adjustment device 140 is designed so that the user can easily assemble it without the need for assembly tools such as separate fasteners when hingedly coupling the height adjustment guide block 141 to the angle adjustment rotation block 144. Improving assembly convenience has already been explained.
  • the present invention provides a headrest height adjustment device that allows the user to adjust the height of the headrest at a desired position without trial and error, as well as prevents the generation of operating noise, and a chair including the same.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Seats For Vehicles (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

La présente invention concerne un appareil de réglage de hauteur d'appui-tête et une chaise qui en est équipée et, en particulier, comprend : une partie d'installation qui est encastrée dans la surface arrière d'un corps d'appui-tête vers l'avant ; des éléments de support fournis aux parties d'extrémité gauche et droite de la partie d'installation ; un bloc de guidage de réglage de hauteur qui est inséré entre la surface arrière du corps d'appui-tête, qui correspond à la partie d'installation, et les éléments de support ; et des générateurs de force de frottement accouplés aux surfaces avant d'une paire d'extrémités en saillie correspondant aux extrémités gauche et droite du bloc de guidage de réglage de hauteur, et entrant en contact avec la surface arrière du corps d'appui-tête, qui correspond à la partie d'installation, de manière à générer la force de frottement correspondant à la réaction contre la force d'actionnement initiale fournie par l'utilisateur. Les avantages sont donc l'amélioration du confort d'utilisation et la prévention des bruits de fonctionnement.
PCT/KR2023/009077 2022-07-12 2023-06-29 Appareil de réglage de hauteur d'appui-tête et chaise le comprenant Ceased WO2024014750A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2025500754A JP2025521963A (ja) 2022-07-12 2023-06-29 ヘッドレスト高さ調整装置およびこれを含む椅子
AU2023306064A AU2023306064A1 (en) 2022-07-12 2023-06-29 Height control apparatus for headrest and chair comprising same
EP23839844.0A EP4555899A1 (fr) 2022-07-12 2023-06-29 Appareil de réglage de hauteur d'appui-tête et chaise le comprenant
CN202380052496.4A CN119604215A (zh) 2022-07-12 2023-06-29 头枕高度调节装置及包括此的椅子
CA3261555A CA3261555A1 (fr) 2022-07-12 2023-06-29 Appareil de réglage de hauteur d'appui-tête et chaise le comprenant
US19/018,582 US20250143468A1 (en) 2022-07-12 2025-01-13 Height control apparatus for headrest and chair comprising same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020220085830A KR102779707B1 (ko) 2022-07-12 2022-07-12 헤드레스트 높이조절 장치 및 이를 포함하는 의자
KR10-2022-0085830 2022-07-12

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US19/018,582 Continuation US20250143468A1 (en) 2022-07-12 2025-01-13 Height control apparatus for headrest and chair comprising same

Publications (1)

Publication Number Publication Date
WO2024014750A1 true WO2024014750A1 (fr) 2024-01-18

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PCT/KR2023/009077 Ceased WO2024014750A1 (fr) 2022-07-12 2023-06-29 Appareil de réglage de hauteur d'appui-tête et chaise le comprenant

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US (1) US20250143468A1 (fr)
EP (1) EP4555899A1 (fr)
JP (1) JP2025521963A (fr)
KR (1) KR102779707B1 (fr)
CN (1) CN119604215A (fr)
AU (1) AU2023306064A1 (fr)
CA (1) CA3261555A1 (fr)
WO (1) WO2024014750A1 (fr)

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Publication number Priority date Publication date Assignee Title
KR102841412B1 (ko) * 2024-02-07 2025-08-01 김기남 게임용 의자 헤드레스트 결합구조

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7240966B2 (en) * 2002-09-05 2007-07-10 A-Dec, Inc. Headrest support and adjustment mechanism
KR20090042890A (ko) * 2009-04-13 2009-05-04 임상수 의자의 머리받침대 높이조절장치
CN201899153U (zh) * 2010-11-18 2011-07-20 傅建华 一种坐具头靠升降装置
KR101103560B1 (ko) * 2009-09-10 2012-01-11 (주)제일씨텍 각도 조절이 가능한 헤드레스트 장치
KR20120134232A (ko) 2011-06-01 2012-12-12 주식회사 코아스 의자의 헤드레스트 각도 및 높이조절장치
KR102053835B1 (ko) * 2018-02-23 2019-12-09 이준구 사무의자용 슬라이딩 헤드레스트

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4278793B2 (ja) * 1999-08-19 2009-06-17 株式会社内田洋行 ヘッドレスト上下動機構
TWM429413U (en) * 2012-01-12 2012-05-21 Xcellent Products Internat Ltd Chair back cushion automatic adjusting apparatus
KR101733981B1 (ko) * 2016-12-22 2017-05-10 주식회사 다원체어스 위치 조절이 가능한 헤드레스트가 구비된 의자

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7240966B2 (en) * 2002-09-05 2007-07-10 A-Dec, Inc. Headrest support and adjustment mechanism
KR20090042890A (ko) * 2009-04-13 2009-05-04 임상수 의자의 머리받침대 높이조절장치
KR101103560B1 (ko) * 2009-09-10 2012-01-11 (주)제일씨텍 각도 조절이 가능한 헤드레스트 장치
CN201899153U (zh) * 2010-11-18 2011-07-20 傅建华 一种坐具头靠升降装置
KR20120134232A (ko) 2011-06-01 2012-12-12 주식회사 코아스 의자의 헤드레스트 각도 및 높이조절장치
KR102053835B1 (ko) * 2018-02-23 2019-12-09 이준구 사무의자용 슬라이딩 헤드레스트

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KR20240008687A (ko) 2024-01-19
AU2023306064A1 (en) 2025-01-23
CA3261555A1 (fr) 2025-04-08
CN119604215A (zh) 2025-03-11
KR102779707B1 (ko) 2025-03-12
US20250143468A1 (en) 2025-05-08
JP2025521963A (ja) 2025-07-10
EP4555899A1 (fr) 2025-05-21

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