KR20160067346A - Apparatus for folding headrest in vehicles - Google Patents

Apparatus for folding headrest in vehicles Download PDF

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Publication number
KR20160067346A
KR20160067346A KR1020140172609A KR20140172609A KR20160067346A KR 20160067346 A KR20160067346 A KR 20160067346A KR 1020140172609 A KR1020140172609 A KR 1020140172609A KR 20140172609 A KR20140172609 A KR 20140172609A KR 20160067346 A KR20160067346 A KR 20160067346A
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KR
South Korea
Prior art keywords
headrest
latch
folding
fixed
fixing
Prior art date
Application number
KR1020140172609A
Other languages
Korean (ko)
Inventor
강석남
유상욱
정동우
이승영
박상도
정해일
츠지 미츠마사
Original Assignee
현대자동차주식회사
아라이 인더스트리얼 컴퍼니 리미티드
주식회사 우보테크
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 현대자동차주식회사, 아라이 인더스트리얼 컴퍼니 리미티드, 주식회사 우보테크 filed Critical 현대자동차주식회사
Priority to KR1020140172609A priority Critical patent/KR20160067346A/en
Publication of KR20160067346A publication Critical patent/KR20160067346A/en

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/38—Support for the head or the back for the head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/803—Head-rests fixed

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

The present invention relates to a headrest folding apparatus, and more particularly, to a headrest folding apparatus comprising a folding frame installed in a seatback and folding means for folding the headrest organically, A latch; A return spring that is wound around the hinge shaft adjacent to the fixed latch and has one end fixed to the fixed latch; A rotating bracket fixed to the headrest and rotatably coupled to the hinge shaft and connected to the other end of the return spring to always return to a vertical state by an elastic force of a return spring; A rotating bracket fixed to the supporting bar protruding inwardly of the rotating bracket and fixed to the rotating bracket in accordance with the rotation of the headrest so as to be engaged with the fixing latch to temporarily return the headrest to a folding state or a vertical state By providing the headrest folding device including the latches, it is effective to secure the backward visibility of the driver, reduce the thickness of the pad, form a compact and improve the degree of freedom of styling, reduce the number of parts, and reduce weight and cost Can be expected.

Description

[0001] Apparatus for folding headrest in vehicles [0002]

More particularly, the present invention relates to a headrest folding apparatus which is effective in securing a rearward visibility of a driver, reduces the thickness of the pad, forms a compact structure, improves the degree of freedom of styling, reduces the number of parts, The present invention relates to a headrest folding apparatus.

In general, the seat for a vehicle has various functions such as a function that the entire seat is moved back and forth so as to achieve a comfortable and convenient sitting condition suitable for the occupant's physical characteristics, a function of adjusting the front and rear angle of the function seatback .

In addition, a headrest is mounted on the upper end of the seat so as to support the rear of the head of the passenger.

However, since the body conditions of the passengers on the vehicle vary, it is practically impossible to fix the fixed position of the headrest so that all the passengers have a comfortable and comfortable feeling, and even if the same passenger sees the desired head Since the height of the rest may vary, it is necessary to adjust the height of the headrest according to the occupant's body condition or the desired state.

Therefore, in order to fix the headrest to the seat back, the height of the headrest is adjusted by manually adjusting the depth of the headrest rod protruding from the headrest toward the seatback, but the headrest is in a state of protruding upward from the seatback There is a problem that the occupant sitting in front of the headrest is inevitably occupied by the headrest even when the occupant is not seated in the rear seat, and therefore the occupant must be stowed in a frustrating state.

FMVSS 202a, a law enforced in North America since 2009, enforced the standard to protect the neck injury from backward collision. In the case of the dynamic test as an option, it limits the angle of the head and neck, It was enacted to prevent the neck injury from being reversed regardless of the front and rear seats.

In consideration of such legislation, headrests are indispensably provided in the central seat for protecting the back of the rear seat passengers of the vehicle, but this headrest is an obstacle to the rear viewability of the driver.

Therefore, a folding headrest having a function of folding back when not in use and ensuring backward visibility and having a function of supporting the head to prevent injury such as fracture is required.

As shown in FIG. 1, a folding frame 10, which is formed in a pawl shape so as to be pulled out on the upper side of a sheet and to which folding means 60 is attached at an end thereof; A front housing 20 and a rear housing 30 which are coupled to each other to protect the folding means 60 of the folding frame 10; A rear cover (40) covering the rear of the rear housing (30); And a pad 501 provided on the outer surface of the front housing 20 to support the back of the occupant.

At this time, the folding means 60 includes a cam bracket 61 which is eccentrically rotatably provided at the center of the upper side of the folding frame 10; An operation button 65 provided at one side of the cam bracket 61 for fixing the cam bracket 61 and exposed to the outside of the front housing 20 to operate the fixing bracket 63, And a shift 67 for releasing the fixing of the cam bracket 61 by the operation of the button 65.

As shown in Fig. 2 (a), when the conventional headrest is placed so as to support the back of the occupant, when the shift button 67 is advanced to about 8 mm by pushing the operation button 65 formed on one side The cam bracket 61 is moved along the folding frame 10 by the movement distance of the shift 67 and the cam bracket 61 is detached from the fixing bracket 63 in this state, After the fixing is released, according to (c), the headrest is rotated by 90 ° in accordance with the rotation of the cam bracket 61 to fold it.

Figure pat00001

[Figure 1]

Figure pat00002

[Figure 2]

However, as shown in Fig. 1 and Fig. 2 above, the existing structure is required to unfold the headrest for the occupant in the center seat as shown in Fig. 1, In the case where there is no occupant seated in the center seat, the headrest of the center seat must be folded to secure the rear view of the driver. However, the inner structure due to folding and the thickness of the headrest including the head seat So that it is not effective in ensuring the rear viewability and is disadvantageous in terms of weight and cost, which causes a rise in cost.

In order to solve the above-described problems, the present invention is configured to reduce the number of parts of the folding unit that folds into the headrest, thereby effectively securing the rearward visibility of the driver, reducing the thickness of the pad, It is an object of the present invention to provide a headrest folding apparatus capable of improving the degree of styling freedom and reducing weight and cost by reducing the number of parts.

In order to attain the above object, the present invention provides a headrest folding apparatus comprising folding means for organically folding a folding frame and a headrest installed in a seatback, wherein the folding means includes a fixing latch fixedly installed at the center of the hinge axis of the folding frame, Wow; A return spring that is wound around the hinge shaft adjacent to the fixed latch and has one end fixed to the fixed latch; A rotating bracket fixed to the headrest and rotatably coupled to the hinge shaft and connected to the other end of the return spring to always return to a vertical state by an elastic force of a return spring; A rotating bracket fixed to the supporting bar protruding inwardly of the rotating bracket and fixed to the rotating bracket in accordance with the rotation of the headrest so as to be engaged with the fixing latch to temporarily return the headrest to a folding state or a vertical state A headrest folding device including a latch is provided.

By providing the present invention configured as described above, it is effective to secure the rear viewability of the driver, reduce the thickness of the pad, form a compact structure, improve the degree of freedom of styling, reduce the number of parts, and reduce weight and cost .

1 is a block diagram of a conventional headrest folding apparatus.
2 is an operational state diagram of a conventional headrest folding apparatus.
3 is a sectional structural view of a conventional headrest folding apparatus.
4 is a configuration diagram of a headrest folding apparatus according to the present invention.
5 is an operational state view of a headrest folding apparatus according to the present invention.
6 is a sectional structural view of a headrest folding apparatus according to the present invention.
FIG. 7 is an operational view of the folding means according to angles at folding in the headrest folding apparatus according to the present invention. FIG.
FIG. 8 is an operating state of the folding means according to angles at unlocking in the headrest folding apparatus according to the present invention. FIG.
FIG. 9 is a diagram illustrating an operation state of the folding means by angle when the headrest folding apparatus according to the present invention is returned. FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains.

4 to 9, the present invention is characterized in that it includes a folding frame 100 installed on an upper portion of a seatback, a hinge shaft 110 installed to be rotatable about a hinge shaft 110 of the folding frame 100, A headrest 200 for supporting the headrest 200; And a folding unit 300 provided on the hinge shaft 110 for folding and operating the headrest 200 about the hinge shaft 110.

The folding unit 300 is provided with a fixing latch 310 fixed to the center of the hinge shaft 110 of the folding frame 100 and is disposed adjacent to the fixing latch 310, And a return spring 330, one end of which is fixed to the fixed latch 310, is provided.

The hinge shaft 110 is fixed to the headrest 200 and is rotatably coupled to the hinge shaft 110. The hinge shaft 330 is connected to the other end of the return spring 330, A rotating bracket 340 for returning to a state of being rotated,

The pivot bracket 340 is pivotally coupled to a support bar 341 protruding inwardly of the pivot bracket 340 and coupled to the fixed latch 310 in correspondence with the rotation of the headrest 200, And a movable latch 320 which temporarily holds the headrest 200 to maintain the folded state or the vertical state of the headrest 200.

Further, the headrest 200 may further include a pad 230 for supporting the back of the occupant.

On the other hand, a fixing groove 315 and a fixing protrusion 317 are formed around the fixed latch 310 in a geometric manner corresponding to the movable latch 320. Around the movable latch 320, The locking protrusion 321 engaged with the fixing protrusion 317 is engaged with the fixing groove 315 so as to maintain the vertical state of the headrest 200, (310). ≪ / RTI >

A movable latch 320 engaged with the fixed latch 310 is selectively pulled to a part of the pivot bracket 340 to release the vertical state and the folded state so that the headrest 200 can freely rotate It is preferable to further include a lock spring 343.

A stopper (not shown) for restricting the rotation of the movable latch 320 so as to prevent the movable latch 320 from being separated from the fixed latch 310 by the lock spring 343 is provided at the rear of the movable latch 320 345 may protrude from the inside of the pivot bracket 340.

The headrest 200 is divided into a front housing 210 and a rear housing 220 which are coupled to each other with the pivot bracket 340 interposed therebetween.

A portion of the periphery of the fixing protrusion 317 restricts rotation of the pivot bracket 340 rotating with the headrest 200 about the hinge shaft 110 in the vertical direction by more than 10 degrees forward of the seat back The limit protrusion 311 can be further protruded.

The locking protrusion 321 of the movable latch 320 is fixed to the fixing latch 310 when the headrest 200 is folded by rotating the headrest 200 in a state in which the locking is released through the locking spring 343. [ A lever projection 323 is formed which is engaged with a switch projection 313 formed on the fixed latch 310 so as to be in close contact with the groove 315 and rotates the movable latch 320.

The present invention will now be described in detail with reference to the accompanying drawings.

7, in a state in which the movable latch 320 is unlocked from the fixed latch 310 by rotating at -10 degrees in a vertical state (hereinafter the same as the initial state) of the headrest 200 And is operated when the pivot bracket 340 rotates by angle.

The lever protrusion 323 of the movable latch 320 is brought into contact with the switch protrusion 313 of the fixed latch 310 so that the movable latch 320 And the locking protrusion 321 of the locking lever 321 is brought into close contact with the fixing latch 310 side.

The locking protrusion 321 of the movable latch 320 is rotated at a point of 25 degrees by the rotation of the lever protrusion 323 caught by the switch protrusion 313 while being gradually rotated from the rotation angle of 5 degrees of the rotation bracket 340, Is brought into contact with the slide surface (319) of the fixed latch (310).

The locking protrusion 321 is moved along the slide surface 319 of the fixing latch 310 and the locking protrusion 321 is caught by the fixing protrusion 317 The folding is completed.

8, when the fixing groove 315 of the fixing latch 310 and the locking protrusion 321 of the movable latch 320 are engaged with each other and the rotating bracket 340 is fixed, 200 is pulled and pulled at -10 degrees, the movable latch 320 is released from the fixed latch 310 to release the fund state.

That is, at the point where the rotation bracket 340 is rotated by -5 degrees, the locking protrusion 321 of the movable latch 320 contacts the switch projection 313 of the fixed latch 310, The locking protrusion 321 gradually moves away from the fixing groove 315 and the locking of the movable latch 320 is released.

At this time, when the pivot bracket 340 is positioned at -10 °, a portion of the pivot bracket 340 contacts the limit protrusion 311 of the fixed latch 310, The movable latch 320 also prevents the movable latch 320 from being released by the stopper 345 formed in the pivotal bracket 340.

9, when the headrest 200 is rotated by pulling the headrest 200 up to 40 占 while the headrest 200 is folded at 90 占 the elastic force of the return spring 330 installed on the hinge shaft 110 To 0 °, which is the initial state.

At this time, the locking protrusion 321 is engaged with the sound of the " snapping " to the fixing groove 315 only when the headrest 200 is rotated by -4 degrees.

That is, if the headrest 200 is rotated by -4 degrees and is not locked, since the locking of the fixed latch 310 and the movable latch 320 is released, the rear head of the occupant can not be protected in the event of a collision of the vehicle. It is the part that needs to be done.

By providing the present invention configured as described above, it is possible to obtain an effect of securing the rearward visibility of the driver, reducing the thickness of the pad, making it compact, improving the degree of freedom of styling, reducing the number of parts, and reducing weight and cost .

The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary terms. It should be interpreted as meaning and concept consistent with the technical idea of the present invention.

Therefore, the configurations shown in the drawings and the embodiments described herein are merely the most preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention. Therefore, It should be understood that various equivalents and modifications are possible.

100: folding frame 110: hinge shaft
200: headrest 210: front housing
220: rear housing 230: pad
300: folding means 310: fixed latch
311: Limit protrusion 313: Switch projection
315: Fixing groove 317: Fixing projection
319: slide surface 320: movable latch
321: Locking protrusion 323: Lever projection
330: return spring 340: pivot bracket
341: Support bar 343: Lock spring
345: Stopper

Claims (7)

A headrest 200 installed to be rotatable around a hinge axis 110 of the folding frame 100 and supporting the back of the occupant; And a folding means 300 provided on the hinge shaft 110 for folding and operating the headrest 200 around the hinge shaft 110. In the headrest folding apparatus 300,
The folding means 300 includes a fixing latch 310 fixed to the center of the hinge shaft 110 of the folding frame 100;
A rotating bracket 340 fixed to the headrest 200 and rotatably coupled to the hinge shaft 110;
The pivot bracket 340 is pivotally coupled to a support bar 341 protruding inwardly of the pivot bracket 340 and coupled to the fixed latch 310 in correspondence with the rotation of the headrest 200, And a movable latch (320) for temporarily fixing the headrest (200) to maintain the folded state or the vertical state of the headrest (200). The method according to claim 1,
Fixing grooves 315 and fixing protrusions 317 are formed geometrically around the fixed latches 310 corresponding to the movable latches 320,
The movable latch 320 may be engaged with the fixing groove 315 so as to maintain the vertical state of the headrest 200 or may be engaged with the fixing protrusion 317 to maintain the folded state of the headrest 200. [ ) Is formed geometrically corresponding to the fixing latch (310). ≪ Desc / Clms Page number 25 > The method according to claim 1,
A locking part 320 is provided at a portion of the pivot bracket 340 to selectively pull the movable latch 320 engaged with the locking latch 310 to release the vertical state and the folding state of the headrest 200 so that the headrest 200 can freely rotate. Further comprising a spring (343). The method of claim 3,
A stopper 345 for restricting the rotation of the movable latch 320 so as to prevent the movable latch 320 from being disengaged from the fixed latch 310 by the locking spring 343 is provided at the rear of the movable latch 320, Is formed protruding from the inside of the pivot bracket (340). The method according to claim 1,
Wherein the headrest (200) is divided into a front housing (210) and a rear housing (220) coupled to each other with the pivot bracket (340) interposed therebetween. The method according to claim 1,
A limit protrusion 311 for restricting the rotation of the pivot bracket 340 rotating about the hinge shaft 110 together with the headrest 200 to the front of the seat back in a vertical state is formed in a part of the periphery of the fixing protrusion 317, Is further protruded from the headrest. The method according to claim 1,
And a return spring 330 wound around the hinge shaft 110 to elastically return the pivot bracket 340 to a vertical position at a portion adjacent to the fixed latch 310. [ Headrest folding device.
KR1020140172609A 2014-12-04 2014-12-04 Apparatus for folding headrest in vehicles KR20160067346A (en)

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Application Number Priority Date Filing Date Title
KR1020140172609A KR20160067346A (en) 2014-12-04 2014-12-04 Apparatus for folding headrest in vehicles

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KR1020140172609A KR20160067346A (en) 2014-12-04 2014-12-04 Apparatus for folding headrest in vehicles

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018044009A1 (en) * 2016-09-05 2018-03-08 Woobo Tech Co., Ltd. Folding device of headrest
WO2018135844A1 (en) * 2017-01-20 2018-07-26 Woobo Tech Co., Ltd. Headrest moving device
KR20200048682A (en) 2018-10-30 2020-05-08 주식회사다스 Padless Head Rest for Automobile Seat

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018044009A1 (en) * 2016-09-05 2018-03-08 Woobo Tech Co., Ltd. Folding device of headrest
WO2018135844A1 (en) * 2017-01-20 2018-07-26 Woobo Tech Co., Ltd. Headrest moving device
CN110139778A (en) * 2017-01-20 2019-08-16 牛步科技有限公司 Headrest moving device
US10875434B2 (en) 2017-01-20 2020-12-29 Woobo Tech Co., Ltd. Headrest moving device
CN110139778B (en) * 2017-01-20 2021-09-14 牛步科技有限公司 Headrest moving device
KR20200048682A (en) 2018-10-30 2020-05-08 주식회사다스 Padless Head Rest for Automobile Seat

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