WO2020015599A1 - 一种双向释锁头枕调节装置以及儿童安全座椅 - Google Patents

一种双向释锁头枕调节装置以及儿童安全座椅 Download PDF

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Publication number
WO2020015599A1
WO2020015599A1 PCT/CN2019/095919 CN2019095919W WO2020015599A1 WO 2020015599 A1 WO2020015599 A1 WO 2020015599A1 CN 2019095919 W CN2019095919 W CN 2019095919W WO 2020015599 A1 WO2020015599 A1 WO 2020015599A1
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WO
WIPO (PCT)
Prior art keywords
headrest
driving
locking
positioning belt
locking devices
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PCT/CN2019/095919
Other languages
English (en)
French (fr)
Inventor
刘建春
唐小斌
Original Assignee
麦克英孚(宁波)婴童用品有限公司
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Application filed by 麦克英孚(宁波)婴童用品有限公司 filed Critical 麦克英孚(宁波)婴童用品有限公司
Priority to KR2020217000005U priority Critical patent/KR200496159Y1/ko
Publication of WO2020015599A1 publication Critical patent/WO2020015599A1/zh

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Classifications

    • 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
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
    • B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
    • 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
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
    • B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
    • B60N2/2803—Adaptations for seat belts
    • 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
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/809—Head-rests movable or adjustable vertically slidable
    • B60N2/812—Head-rests movable or adjustable vertically slidable characterised by their locking devices
    • 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
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/809—Head-rests movable or adjustable vertically slidable
    • B60N2/812—Head-rests movable or adjustable vertically slidable characterised by their locking devices
    • B60N2/821—Head-rests movable or adjustable vertically slidable characterised by their locking devices with continuous positioning
    • 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
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/809—Head-rests movable or adjustable vertically slidable
    • B60N2/829—Head-rests movable or adjustable vertically slidable characterised by their adjusting mechanisms, e.g. electric motors

Definitions

  • the utility model relates to the field of child safety seats, in particular to a two-way release headrest adjustment device and a child safety seat.
  • a child safety seat for a vehicle is disclosed.
  • the headrest can be adjusted downward by pressing down on the adjustment handle, and the headrest can be adjusted upward by lifting the adjustment handle upward.
  • the adjustment handle is pushed down, the ratchet teeth of the first adjustment block are separated from the belt, and the headrest can be moved downward at this time, but the ratchet teeth on the second adjustment block are still separated from the belt during the downward movement of the headrest.
  • Contact with objects increases the resistance of the headrest to move downwards and easily damage the ribbon.
  • the handle is pulled up to adjust the handle, the ratchet teeth of the second adjustment block are separated from the ribbon, but the ratchet teeth on the first adjustment block and The ribbon contacts increase the resistance of the headrest to move up.
  • the purpose of the utility model is to provide a two-way unlocking headrest adjusting device, which can adjust the height of the headrest and reduce the resistance when the headrest moves.
  • a two-way unlocking headrest adjusting device is used for adjusting the height of a headrest movably mounted on a seat, and includes two locking devices and a driving device movably mounted on the headrest;
  • the two locking devices When changing between a locked state and an unlocked state, when in the locked state, the two locking devices are locked with a positioning belt installed on the seat, and one of the locking devices restricts the headrest from facing As the positioning belt moves upward, another locking device restricts the headrest from moving downward relative to the positioning belt.
  • the two locking devices are separated from the positioning belt;
  • the driving device is used for driving two locking devices to lock or unlock at the same time.
  • the locking device has a ratchet structure.
  • its ratchet teeth are adapted to be inserted into the weaving holes of the positioning belt.
  • the ratchet teeth of the two locking devices extend in opposite directions. Therefore, the two locking devices respectively lock the movement of the headrest in two opposite directions. Because the positioning belt is a woven belt with dense weaving holes, the locking device can be basically locked at any position of the positioning belt, that is, the stepless adjustment of the height of the headrest is realized.
  • the two locking devices are rotatably disposed on the same side of the positioning belt, so that the locking devices are switched between a locked state and an unlocked state, and the directions of rotation when the two locking devices are unlocked are different.
  • the extension directions of the respective ratchet teeth are opposite, so that when unlocking, the ratchet teeth are smoothly separated from the weaving holes on the positioning belt.
  • the driving device includes a driving member and a driven member, the driving member and the driven member are respectively used to drive a locking device, and the driving member is movably disposed in the height direction on the locking member.
  • the driving member On the headrest, one end of the driving member extends to the upper part of the headrest, and the other end cooperates with a locking device, so that when the driving member moves up, the corresponding locking device is driven from the locked state.
  • the follower is rotatably provided on the headrest, a first end of the follower is matched with the drive member, and a second end of the follower is connected with the other
  • the locking device cooperates to drive the driven member to rotate when the driving member moves up, and drives the corresponding locking device to rotate from the locked state to the unlocked state when the driven member rotates.
  • each of the locking devices includes a ratchet end and a driving end.
  • the ratchet end is formed with continuous ratchet teeth, and the driving end is away from the ratchet end and away from the positioning belt. It extends in the height direction, and the driving ends of the two locking devices extend in opposite directions.
  • Each of the locking devices is rotatably mounted on the headrest through a shaft pin, and the shaft pin is located on the ratchet. Between the tooth end and the driving end, the two locking devices are respectively maintained in a locked state by a torsion spring.
  • the driving device includes a driving member and a driven member, the driving member and the driven member are respectively used to drive a locking device, and the driving member is movably disposed in the height direction on the locking member.
  • the driving member On the headrest, one end of the driving member extends to the upper part of the headrest, and the other end cooperates with a driving end, so that when the driving member moves up, the corresponding locking device is driven to rotate from the locked state.
  • the follower In the unlocked state, the follower is rotatably provided on the headrest, a first end of the follower is mated with the slope of the drive member, and a second end of the follower is connected with the other
  • the driving end cooperates to drive the driven member to rotate when the driving member moves up, and drives the corresponding locking device to rotate from the locked state to the unlocked state when the driven member rotates.
  • the driving member includes a locking driving inclined surface that extends obliquely and downwardly facing the positioning belt, the locking driving inclined surface is opposite to the driving end extending downward, and when the driving member moves upward, the driving member The driving end extending downward rotates in a direction close to the positioning belt under the action of the locking driving inclined surface, so that the corresponding ratchet end is far from the positioning belt.
  • the driving member further includes a driven member driving inclined surface that extends obliquely and downwardly away from the positioning belt, the driven member driving inclined surface is opposite to the first end of the driven member, and the driven member The second end is opposite to the driving end extending upward.
  • the driving member moves upward, the first end of the driven member moves away from the positioning belt under the action of the driven member driving slope. Rotating, so that the second end of the follower rotates in a direction close to the positioning belt, and then drives the driving end extending upward to rotate in a direction close to the positioning belt, so that the corresponding ratchet teeth The end is far from the positioning belt.
  • the two-way unlocking headrest adjustment device further includes a return spring, which is disposed between the driving member and the headrest for maintaining the driving member in a locked state.
  • the present invention further provides a child safety seat including a seat and a headrest movably disposed in the seat along a height direction, and a positioning belt is provided on the seat.
  • the headrest adjustment device for bidirectional release of the present invention locks or unlocks the headrest by locking or unlocking with the positioning belt.
  • the utility model has the beneficial effect that after the headrest is unlocked, it can move up and down relative to the seat arbitrarily.
  • both of the locking devices are Not in contact with the positioning belt, avoiding abrasion of the positioning belt and increasing its service life.
  • FIG. 1 is a schematic installation diagram of a two-way release headrest adjusting device according to the present invention
  • FIG. 2 is an exploded schematic view of a two-way unlocking headrest adjusting device according to the present invention
  • FIG. 3 is a cross-sectional view of a two-way release headrest adjustment device according to the present invention, showing a locked state
  • FIG. 4 is a partially enlarged view of FIG. 3;
  • FIG. 5 is a cross-sectional view of a two-way release headrest adjustment device according to the present invention, showing an unlocked state
  • FIG. 6 is a partially enlarged view of FIG. 5;
  • the present invention provides a two-way unlocking headrest adjusting device 3 for adjusting the height of a headrest 2 movably mounted on a seat (not shown).
  • the two-way unlocking headrest adjusting device 3 includes two locking devices 31 and 32 and a driving device 33 movably mounted on the headrest 2; the two locking devices 31 and 32 are adapted to change between a locked state and an unlocked state.
  • the locked state the locking devices 31 and 32 are locked with the positioning belt 1 on the seat.
  • One of the locking devices 31 restricts the headrest 2 from moving upward with respect to the positioning belt 1 and the other locking device 32 restricts the headrest 2 relative to the positioning belt 1.
  • the positioning belt 1 moves downward.
  • the two locking devices 31 and 32 are separated from the positioning belt 1 and the headrest 2 can move up and down freely.
  • the driving device 33 is used to drive the two locking devices 31 and 32 to lock at the same time. Or unlock.
  • the positioning belt 1 extends in the height direction of the seat, so that when the headrest 2 moves up and down relative to the seat, the two locking devices 31 and 32 installed on the headrest 2 can always be opposed to the positioning belt 1 .
  • the upward movement of the headrest 2 relative to the seat is locked or unlocked by a locking device 31, and the downward movement of the headrest 2 relative to the seat is locked or unlocked by another locking device 32, and the driving device is used.
  • 33 realizes the simultaneous unlocking of the two locking devices 31, 32, so that after the headrest 2 is unlocked, it can be arbitrarily moved up and down relative to the seat.
  • the two locking devices 31 and 32 are not in position.
  • the contact of the belt 1 avoids abrasion of the positioning belt 1 and increases its service life.
  • the headrest 2 when the headrest 2 is in the unlocked state, it can be moved up and down arbitrarily. If the headrest 2 is adjusted too high, it can be directly moved down to a suitable position, instead of having to move the headrest up too high as in the prior art. When you need to press the handle down to unlock the movement in the other direction.
  • the locking devices 31 and 32 have a ratchet structure, and the positioning belt 1 is a woven belt.
  • the locking devices 31 and 32 are in the locked state, their ratchet teeth are suitable for being inserted into the weaving holes of the positioning belt 1.
  • the ratchet teeth of the two locking devices 31 and 32 extend in opposite directions, and the two are locked. The movement of the headrest 2 in two opposite directions.
  • the two locking devices 31 and 32 are rotatably disposed on the same side of the positioning belt 1 so that the locking devices 31 and 32 can rotate between a locked state and an unlocked state.
  • the rotation directions of the two locking devices 31 and 32 when unlocking are opposite to the extending directions of their respective ratchet teeth, so that the ratchet teeth can be smooth during unlocking. Separated from the weaving hole on the positioning belt 1. Since the ratchet teeth directions of the two locking devices 31 and 32 are opposite, the rotation directions of the two locking devices 31 and 32 when they are unlocked are opposite.
  • each of the locking devices 31 and 32 includes ratchet ends 311 and 321 and driving ends 312 and 322.
  • the ratchet ends 311 and 321 are formed with continuous ratchet teeth
  • the driving ends 321 and 322 are formed from the ratchet end 311.
  • the side of 321 and 321 away from the positioning belt 1 extend in the height direction
  • the driving ends 312 and 322 of the two locking devices 31 and 32 extend in opposite directions.
  • Each of the locking devices 31 and 32 is rotatably mounted on the headrest 2 through a shaft pin 36.
  • the shaft pin 36 is located between the ratchet ends 311 and 321 and the driving ends 312 and 322. Both locking devices 31 and 32 are kept in a locked state by a torsion spring.
  • the driving device 33 When the driving device 33 simultaneously drives the two driving ends 312 and 322 to rotate in the direction of the positioning belt 1, the two ratchet ends 311 and 321 are simultaneously rotated in a direction away from the positioning belt 1, thereby unlocking the headrest 2.
  • the driving device 33 includes a driving member 331 and a driven member 332.
  • the driving member 331 and the driven member 332 are respectively used to drive a locking device 31, 32, so that the two locking devices 31, 32 rotate in opposite directions.
  • the driving member 331 is movably disposed on the headrest 2 along the height direction. One end of the driving member 331 extends to the upper portion of the headrest 2 for the convenience of the user. The other end of the driving member 331 extends downward and locks.
  • the driving end 312 of the device 31 cooperates with an inclined surface so that when the driving member 331 moves upward, the driving end 312 of the locking device 31 rotates in the direction of the positioning belt 1; the driven member 332 is rotatably provided on the headrest 2
  • the first end of the driven member 332 cooperates with the inclined surface of the driving member 331, so that when the driving member 331 moves upward, the second end of the driven member 332 rotates in the direction of the positioning belt 1, and the second end of the driven member 332 is locked with another lock.
  • the driving end 322 of the locking device 32 is opposite, so that when the follower 332 rotates, the driving end 322 of the locking device 32 is driven to rotate in the direction of the positioning belt 1.
  • the driving member 331 includes a locking driving inclined surface 3311 that extends obliquely and downwardly facing the positioning belt 1, and the locking driving inclined surface 3311 is opposite to the driving end 312 extending downward.
  • the driving member 331 moves upward, the downward extending The driving end 312 is turned toward the positioning belt 1 under the action of the locking driving inclined surface 3311, so that the corresponding ratchet end 311 is away from the positioning belt 1, thereby turning the locking device 31 from the locked state to the unlocked state.
  • the driving member 331 further includes a driven member driving inclined surface 3312 which extends obliquely downwards from the positioning belt 1.
  • the driven member driving inclined surface 3312 is opposite to the first end of the driven member 332, and the second end of the driven member 332 is upward.
  • the extended driving end 322 is opposite.
  • the active member 331 is kept in a locked state by a return spring 34.
  • the user overcomes the force of the return spring 34 and pulls the active member 331 to move upward.
  • the return spring 34 recovers to deform ,
  • the active member 331 is moved to the initial position, and the locking devices 31 and 32 are turned from the unlocked state to the locked state by the torsion spring.
  • the two-way unlocking headrest adjusting device 3 further includes a mounting housing 35, and the two locking devices 31 and 32 are adapted to be rotatably disposed in the mounting housing 35, and at least a part of the driving device 33 passes through the mounting housing 35. It cooperates with the locking devices 31 and 32 in the mounting housing 35. At least a part of the positioning belt 1 passes through the mounting case 35 and is opposed to the locking devices 31 and 32 in the mounting case 35.
  • the two-way unlocking headrest adjusting device 3 of the present utility model is shown in FIGS. 3 and 4: the active member 331 is at the lower end of its stroke, and the ratchet teeth on the two ratchet ends 311 and 321 are inserted into the positioning belt 1. The headrest 2 and the positioning belt 1 are locked in the woven hole of.
  • the driving member 331 moves upward, and a locking device 31 is driven to unlock by the locking driving inclined surface 3311, and the driven member
  • the driving inclined surface 3312 drives the driven member 332 to rotate, and then uses the rotation of the driven member 332 to rotate the other locking device 32 to the unlocked state, so that the headrest 2 is unlocked and can be adjusted up and down in the height direction; after the adjustment is completed, release
  • the driving member 331, the driving member 331 returns to the initial position under the action of the return spring 34, the locking devices 31, 32 also return to the locked state under the action of the respective torsion springs, and the follower 332 functions in the corresponding locking device 32 It also returns to the initial position.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • General Health & Medical Sciences (AREA)
  • Seats For Vehicles (AREA)

Abstract

一种双向释锁头枕调节装置，用于调节一活动安装在座椅上的头枕的高度，包括活动安装在头枕（2）上的两锁止装置（31/32）和驱动装置（33）；两锁止装置（31/32）能在锁定状态与解锁状态之间变换，当位于锁定状态时，两锁止装置（31/32）与安装在座椅上的一定位带（1）锁定，其中一锁止装置（31）限制头枕（2）相对于定位带（1）向上移动，另一锁止装置（32）限制头枕（2）相对于定位带（1）向下移动，当位于解锁状态时，两锁止装置（31/32）与定位带（1）分离；驱动装置（33）用于驱动两锁止装置（31/32）同时锁定或解锁。双向释锁头枕调节装置能减小定位带的磨损，增加定位带的使用寿命。还提供了一种儿童安全座椅。

Description

一种双向释锁头枕调节装置以及儿童安全座椅 技术领域
本实用新型涉及儿童安全座椅领域，尤其涉及一种双向释锁头枕调节装置以及儿童安全座椅。
背景技术
目前，许多儿童安全座椅上都设有头枕。由于儿童的成长速度非常快，在儿童安全座椅的使用期间内，儿童的身高和体型会不断变化，其乘坐儿童安全座椅时头部的位置也会随之不断变化，因此，为了改善座椅的舒适性，满足儿童在不同阶段的需求，头枕高度的可调节是非常必要的。
在申请号为CN203221904U的专利，公开了一种车用儿童安全座椅，通过下压调节拉手，可往下调节头枕，往上提升调节拉手，即可向上调节头枕。下压调节拉手时，第一调节块的棘齿与带状物分离，此时头枕可向下移动，但是头枕向下移动的过程中，第二调节块上的棘齿仍然与带状物接触，增加了头枕下移的阻力，且容易损坏带状物；同理上拉调节拉手时，第二调节块的棘齿与带状物分离，但是第一调节块上的棘齿与带状物接触，增加了头枕上移的阻力。
实用新型内容
本实用新型的目的在于提供一种双向释锁头枕调节装置，实现对头枕高度的调节，减少头枕移动时的阻力。
本实用新型的目的采用如下技术方案实现：
一种双向释锁头枕调节装置，用于调节一活动安装在座椅上的头枕的高度，包括活动安装在所述头枕上的两锁止装置和驱动装置；两所述锁止装置适于在锁定状态与解锁状态之间变换，当位于锁定状态时，两所述锁止装置与安装在 所述座椅上的一定位带锁定，其中一所述锁止装置限制所述头枕相对于所述定位带向上移动，另一所述锁止装置限制所述头枕相对于所述定位带向下移动，当位于解锁状态时，两所述锁止装置与所述定位带分离；所述驱动装置用于驱动两所述锁止装置同时锁定或解锁。
进一步地，所述锁止装置具有棘齿结构，所述锁止装置在锁定状态时，其棘齿适于插入所述定位带的织孔内，两所述锁止装置棘齿的延伸方向相反，从而两所述锁止装置分别锁定所述头枕在相反两个方向上的移动。由于所述定位带为编织带，其织孔密集，因此所述锁止装置基本可以锁定在所述定位带的任意位置，也即实现了所述头枕高度的无级调节。
进一步地，两所述锁止装置可转动地设置在所述定位带的同一侧，从而所述锁止装置在锁定状态与解锁状态之间转换，两所述锁止装置解锁时的转动方向与其各自棘齿的延伸方向相反，以使得解锁时，棘齿顺利与所述定位带上的织孔分离。
进一步地，所述驱动装置包括主动件以及从动件，所述主动件与所述从动件分别用于驱动一所述锁止装置，所述主动件沿高度方向可移动地设置在所述头枕上，所述主动件的一端延伸到所述头枕的上部，另一端与一所述锁止装置配合，以使得所述主动件上移时，带动相应的所述锁止装置由锁定状态转动到解锁状态，所述从动件可转动地设于所述头枕，所述从动件的第一端与所述主动件配合，所述从动件的第二端与另一所述锁止装置配合，以使得所述主动件上移时带动所述从动件转动，所述从动件转动时驱动相应的所述锁止装置由锁定状态转动到解锁状态。
进一步地，每一所述锁止装置均包括棘齿端以及驱动端，所述棘齿端上形成有连续的棘齿，所述驱动端从所述棘齿端远离所述定位带的一侧沿高度方向 延伸，且两所述锁止装置的所述驱动端的延伸方向相反，每一所述锁止装置通过一轴销可转动地安装于所述头枕，所述轴销位于所述棘齿端与所述驱动端之间，两所述锁止装置分别通过扭簧保持在锁定状态。
进一步地，所述驱动装置包括主动件以及从动件，所述主动件与所述从动件分别用于驱动一所述锁止装置，所述主动件沿高度方向可移动地设置在所述头枕上，所述主动件的一端延伸到所述头枕的上部，另一端与一所述驱动端配合，以使得所述主动件上移时，带动相应的所述锁止装置由锁定状态转动到解锁状态，所述从动件可转动地设于所述头枕，所述从动件的第一端与所述主动件斜面配合，所述从动件的第二端与另一所述驱动端配合，以使得所述主动件上移时带动所述从动件转动，所述从动件转动时驱动相应的所述锁止装置由锁定状态转动到解锁状态。
进一步地，所述主动件包括面向所述定位带倾斜向下延伸的锁止驱动斜面，所述锁止驱动斜面与向下延伸的所述驱动端相对，当所述主动件上移时，该向下延伸的所述驱动端在所述锁止驱动斜面的作用下向靠近所述定位带的方向转动，以使得相应的所述棘齿端远离所述定位带。
进一步地，所述主动件还包括背向所述定位带倾斜向下延伸的从动件驱动斜面，所述从动件驱动斜面与所述从动件的第一端相对，所述从动件的第二端与向上延伸的所述驱动端相对，当所述主动件向上移动时，所述从动件第一端在所述从动件驱动斜面的作用下向远离所述定位带的方向转动，以使得所述从动件的第二端向靠近所述定位带的方向转动，进而带动向上延伸的所述驱动端向靠近所述定位带的方向转动，以使得相应的所述棘齿端远离所述定位带。
进一步地，所述双向释锁头枕调节装置还包括一复位弹簧，所述复位弹簧设于所述主动件与所述头枕之间，用于将所述主动件保持在锁定状态。
根据本实用新型的第二方面，本实用新型还提供一种儿童安全座椅，包括座椅以及沿高度方向可移动地设于所述座椅的头枕，所述座椅上设置有定位带，本实用新型的所述双向释锁头枕调节装置通过与所述定位带锁定或解锁，实现对所述头枕的锁定或解锁。
相比现有技术，本实用新型的有益效果在于：所述头枕被解锁后，其可相对于所述座椅上下任意移动，所述头枕移动的过程中，两所述锁止装置均不与所述定位带接触，避免了对所述定位带的磨损，增加了其使用寿命。
附图说明
图1是根据本实用新型的双向释锁头枕调节装置的一个安装示意图；
图2是根据本实用新型的双向释锁头枕调节装置的爆炸示意图；
图3是根据本实用新型的双向释锁头枕调节装置的剖视图，显示了锁定状态；
图4为图3的局部放大图；
图5是根据本实用新型的双向释锁头枕调节装置的剖视图，显示了解锁状态；
图6为图5的局部放大图；
图中：1、定位带；2、头枕；3、双向释锁头枕调节装置；31、锁止装置；311、棘齿端；312、驱动端；32、锁止装置；321、棘齿端；322、驱动端；33、驱动装置；331、主动件；3311、锁止驱动斜面；3312、从动件驱动斜面；332、从动件；34、复位弹簧；35、安装壳体；36、轴销。
具体实施方式
下面，结合具体实施方式，对本实用新型做进一步描述，需要说明的是， 在不相冲突的前提下，以下描述的各实施例之间或各技术特征之间可以任意组合形成新的实施例。
在本实用新型的描述中，需要说明的是，对于方位词，如有术语“中心”，“横向”、“纵向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示方位和位置关系为基于附图所示的方位或位置关系，仅是为了便于叙述本实用新型和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定方位构造和操作，不能理解为限制本实用新型的具体保护范围。
如图1-6所示，本实用新型提供一种双向释锁头枕调节装置3，用于调节一活动安装在座椅(图中未示出)上的头枕2的高度。双向释锁头枕调节装置3包括活动安装在头枕2上的两锁止装置31、32和驱动装置33；两锁止装置31、32适于在锁定状态与解锁状态之间变换，当位于锁定状态时，锁止装置31、32与座椅上的定位带1锁定，其中一锁止装置31限制头枕2相对于定位带1向上移动，另一锁止装置32限制头枕2相对于定位带1向下移动，当位于解锁状态时，两锁止装置31、32与定位带1分离，头枕2可自由地上下移动；驱动装置33用于驱动两锁止装置31、32同时锁定或解锁。
值得一提的是，定位带1沿座椅的高度方向延伸，从而头枕2相对于座椅上下移动时，安装在头枕2上的两锁止装置31、32始终可与定位带1相对。
本实用新型中，通过一锁止装置31锁定或解锁头枕2相对于座椅向上的移动，通过另一锁止装置32锁定或解锁头枕2相对于座椅向下的移动，通过驱动装置33实现两锁止装置31、32的同步解锁，从而头枕2被解锁后，其可相对于座椅上下任意移动，头枕2移动的过程中，两锁止装置31、32均不与定位带1接触，避免了对定位带1的磨损，增加了其使用寿命。此外，当头枕2处于解 锁状态时，其可以任意的上下移动，如果头枕2调整的太高，可以直接向下移动到合适的位置，而不必如现有技术中，头枕上移位置过高时，还需要在向下按压拉手，解锁另一方向的移动。
为了实现头枕2高度的无级调节，锁止装置31、32具有棘齿结构，定位带1为编织带。锁止装置31、32在锁定状态时，其棘齿适于插入定位带1的织孔内，相对于定位带1而言，两锁止装置31、32棘齿的延伸方向相反，二者锁定头枕2在相反两个方向上的移动。当头枕2被锁定时：若头枕2受到向上的拉力，一锁止装置31的棘齿卡在定位带1的织孔内，使得头枕2无法向上移动；若头枕2受到向下的压力，另一锁止装置32的棘齿卡在定位带1的织孔内，使得头枕2无法向下移动。
两锁止装置31、32可转动地设置在定位带1的同一侧，从而锁止装置31、32可在锁定状态与解锁状态之间转动。为了保证解锁时锁止装置31、32与定位带1分离的顺畅性，两锁止装置31、32在解锁时的转动方向与其各自棘齿的延伸方向相反，从而在解锁时，棘齿可顺利与定位带1上的织孔分离。由于两锁止装置31、32的棘齿方向相反，因此两锁止装置31、32在解锁时的转动方向相反。
优选地，每一锁止装置31、32均包括棘齿端311、321以及驱动端312、322，棘齿端311、321上形成有连续的棘齿，驱动端321、322从棘齿端311、321远离定位带1的一侧沿高度方向延伸，且两锁止装置31、32的驱动端312、322的延伸方向相反。每一锁止装置31、32通过一轴销36可转动地安装于头枕2，轴销36位于棘齿端311、321与驱动端312、322之间。两锁止装置31、32均通过扭簧保持在锁定状态。
当驱动装置33同时带动两驱动端312、322向定位带1的方向转动时，两 棘齿端311、321同时向远离定位带1的方向转动，从而实现头枕2的解锁。
根据驱动装置33的一个实施例，其包括主动件331以及从动件332。主动件331与从动件332分别用于驱动一锁止装置31、32，以使得两个锁止装置31、32绕相反的方向转动。
主动件331沿高度方向可移动地设置在头枕2上，主动件331的一端延伸到头枕2的上部，以方便使用者对其进行操作，主动件331的另一端向下延伸与一锁止装置31的驱动端312斜面配合，以使得主动件331向上移动时，该锁止装置31的驱动端312向定位带1的方向转动；从动件332可转动地设置在头枕2上，从动件332第一端与主动件331斜面配合，以使得主动件331向上移动时，从动件332的第二端向定位带1的方向转动，从动件332的第二端与另一锁止装置32的驱动端322相对，从而从动件332转动时驱动该锁止装置32的驱动端322向定位带1的方向转动。
进一步地，主动件331包括一面向定位带1倾斜向下延伸的锁止驱动斜面3311，锁止驱动斜面3311与向下延伸的驱动端312相对，当主动件331向上移动时，该向下延伸的驱动端312在锁止驱动斜面3311的作用下向靠近定位带1的方向转动，以使得相应的棘齿端311远离定位带1，从而将锁止装置31从锁定状态转动到解锁状态。
主动件331还包括一背向定位带1倾斜向下延伸的从动件驱动斜面3312，从动件驱动斜面3312与从动件332的第一端相对，从动件332的第二端与向上延伸的驱动端322相对，当主动件331向上移动时，从动件332第一端在从动件驱动斜面3312的作用下向远离定位带1的方向转动，以使得从动件332的第二端向靠近定位带1的方向转动，进而驱动向上延伸的驱动端322向靠近定位带1的方向转动，以使得相应的棘齿端321远离定位带1，从而将锁止装置32 从锁定状态转动到解锁状态。
优选地，主动件331通过一复位弹簧34保持在锁定状态，当需要解锁时，使用者克服复位弹簧34的作用力，拉动主动件331向上移动，当使用者撤去外力时，复位弹簧34恢复形变，使主动件331移动到初始位置，同时锁止装置31、32在扭簧的作用下由解锁状态转动到锁定状态。
优选地，双向释锁头枕调节装置3还包括安装壳体35，两锁止装置31、32适于可转动地设置在安装壳体35内，驱动装置33的至少一部分穿过安装壳体35，与安装壳体35内的锁止装置31、32配合。定位带1的至少一部分穿过安装壳体35，与安装壳体35内的锁止装置31、32相对。
本实用新型的双向释锁头枕调节装置3在初始状态时，如图3、4所示：主动件331处于其行程的最下端，两棘齿端311、321上的棘齿插入定位带1的织孔内，将头枕2与定位带1锁定。
当要解锁头枕2时，使用者向上提拉主动件331，如图5、6：主动件331向上移动，通过锁止驱动斜面3311驱动一锁止装置31转动到解锁状态，通过从动件驱动斜面3312驱动从动件332转动，进而利用从动件332的转动带动另一锁止装置32转动到解锁状态，从而头枕2被解锁，可沿高度方向上下调节；调节完成后，松开主动件331，主动件331在复位弹簧34的作用下回复在初始位置，锁止装置31、32也在各自扭簧的作用下回复到锁定状态，从动件332在相应锁止装置32的作用下也回复初始位置。
上述实施方式仅为本实用新型的优选实施方式，不能以此来限定本实用新型保护的范围，本领域的技术人员在本实用新型的基础上所做的任何非实质性的变化及替换均属于本实用新型所要求保护的范围。

Claims (10)

  1. 一种双向释锁头枕调节装置，用于调节一活动安装在座椅上的头枕的高度，其特征在于，包括活动安装在所述头枕上的两锁止装置和驱动装置；两所述锁止装置适于在锁定状态与解锁状态之间变换，当位于锁定状态时，两所述锁止装置与安装在所述座椅上的一定位带锁定，其中一所述锁止装置限制所述头枕相对于所述定位带向上移动，另一所述锁止装置限制所述头枕相对于所述定位带向下移动，当位于解锁状态时，两所述锁止装置与所述定位带分离；所述驱动装置用于驱动两所述锁止装置同时锁定或解锁。
  2. 根据权利要求1所述的双向释锁头枕调节装置，其特征在于，所述锁止装置具有棘齿结构，所述锁止装置在锁定状态时，其棘齿适于插入所述定位带的织孔内，两所述锁止装置棘齿的延伸方向相反，从而两所述锁止装置分别锁定所述头枕在相反两个方向上的移动。
  3. 根据权利要求2所述的双向释锁头枕调节装置，其特征在于，两所述锁止装置可转动地设置在所述定位带的同一侧，从而所述锁止装置在锁定状态与解锁状态之间转换，两所述锁止装置解锁时的转动方向与其各自棘齿的延伸方向相反，以使得解锁时，棘齿顺利与所述定位带上的织孔分离。
  4. 根据权利要求1所述的双向释锁头枕调节装置，其特征在于，所述驱动装置包括主动件以及从动件，所述主动件与所述从动件分别用于驱动一所述锁止装置，所述主动件沿高度方向可移动地设置在所述头枕上，所述主动件的一端延伸到所述头枕的上部，另一端与一所述锁止装置配合，以使得所述主动件上移时，带动相应的所述锁止装置由锁定状态转动到解锁状态，所述从动件可转动地设于所述头枕，所述从动件的第一端与所述主动件配合，所述从动件的第二端与另一所述锁止装置配合，以使得所述主动件上移时带动所述从动件转 动，所述从动件转动时驱动相应的所述锁止装置由锁定状态转动到解锁状态。
  5. 根据权利要求3所述的双向释锁头枕调节装置，其特征在于，每一所述锁止装置均包括棘齿端以及驱动端，所述棘齿端上形成有连续的棘齿，所述驱动端从所述棘齿端远离所述定位带的一侧沿高度方向延伸，且两所述锁止装置的所述驱动端的延伸方向相反，每一所述锁止装置通过一轴销可转动地安装于所述头枕，所述轴销位于所述棘齿端与所述驱动端之间，两所述锁止装置分别通过扭簧保持在锁定状态。
  6. 根据权利要求5所述的双向释锁头枕调节装置，其特征在于，所述驱动装置包括主动件以及从动件，所述主动件与所述从动件分别用于驱动一所述锁止装置，所述主动件沿高度方向可移动地设置在所述头枕上，所述主动件的一端延伸到所述头枕的上部，另一端与一所述驱动端配合，以使得所述主动件上移时，带动相应的所述锁止装置由锁定状态转动到解锁状态，所述从动件可转动地设于所述头枕，所述从动件的第一端与所述主动件斜面配合，所述从动件的第二端与另一所述驱动端配合，以使得所述主动件上移时带动所述从动件转动，所述从动件转动时驱动相应的所述锁止装置由锁定状态转动到解锁状态。
  7. 根据权利要求6所述的双向释锁头枕调节装置，其特征在于，所述主动件包括面向所述定位带倾斜向下延伸的锁止驱动斜面，所述锁止驱动斜面与向下延伸的所述驱动端相对，当所述主动件上移时，该向下延伸的所述驱动端在所述锁止驱动斜面的作用下向靠近所述定位带的方向转动，以使得相应的所述棘齿端远离所述定位带。
  8. 根据权利要求6或7所述的双向释锁头枕调节装置，其特征在于，所述主动件还包括背向所述定位带倾斜向下延伸的从动件驱动斜面，所述从动件驱 动斜面与所述从动件的第一端相对，所述从动件的第二端与向上延伸的所述驱动端相对，当所述主动件向上移动时，所述从动件第一端在所述从动件驱动斜面的作用下向远离所述定位带的方向转动，以使得所述从动件的第二端向靠近所述定位带的方向转动，进而带动向上延伸的所述驱动端向靠近所述定位带的方向转动，以使得相应的所述棘齿端远离所述定位带。
  9. 根据权利要求4或6所述的双向释锁头枕调节装置，其特征在于，还包括一复位弹簧，所述复位弹簧设于所述主动件与所述头枕之间，用于将所述主动件保持在锁定状态。
  10. 一种儿童安全座椅，包括座椅以及沿高度方向可移动地设于所述座椅的头枕，其特征在于，包括如权利1-9任一所述双向释锁头枕调节装置，所述座椅上设置有定位带，所述双向释锁头枕调节装置的所述锁止装置通过与所述定位带锁定或解锁，实现对所述头枕的锁定或解锁。
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CN112874397B (zh) * 2021-03-08 2022-09-16 宁波宝贝第一母婴用品有限公司 一种头枕无极调节装置及包括其的儿童安全座椅

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