WO2022041792A1 - Isofix机构及安全座椅 - Google Patents

Isofix机构及安全座椅 Download PDF

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Publication number
WO2022041792A1
WO2022041792A1 PCT/CN2021/088011 CN2021088011W WO2022041792A1 WO 2022041792 A1 WO2022041792 A1 WO 2022041792A1 CN 2021088011 W CN2021088011 W CN 2021088011W WO 2022041792 A1 WO2022041792 A1 WO 2022041792A1
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WO
WIPO (PCT)
Prior art keywords
locking
station
locking member
isofix mechanism
guide groove
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PCT/CN2021/088011
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English (en)
French (fr)
Inventor
王友平
潘晓路
Original Assignee
宁波宝贝第一母婴用品有限公司
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Application filed by 宁波宝贝第一母婴用品有限公司 filed Critical 宁波宝贝第一母婴用品有限公司
Publication of WO2022041792A1 publication Critical patent/WO2022041792A1/zh

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    • 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
    • B60N2/2887—Fixation to a transversal anchorage bar, e.g. isofix

Definitions

  • the invention relates to the technical field of safety seats, in particular to an ISOFIX mechanism and a safety seat.
  • ISOFIX refers to a mechanism that connects the child restraint system to the vehicle.
  • the locking element In the locked state, the locking element is used to lock the teeth, so that the teeth remain locked on the lock pin.
  • the shell of ISOFIX is bent, and the locking piece affected by the shell will be disengaged from the latching teeth, which will cause the seat to loosen, thereby causing a safety hazard. .
  • the purpose of the present invention is to provide an ISOFIX mechanism and a safety seat, so as to alleviate the technical problem in the prior art that the casing of the ISOFIX mechanism is bent and causes the locking member to disengage from the latching teeth.
  • the ISOFIX mechanism provided by the present invention includes: a housing, a tooth and a locking member;
  • the locking piece is movably connected to the housing, and the locking piece has a first station and a second station;
  • the latching teeth are in an unlocked state
  • the locking member locks the latching teeth, and the locking member has a movable margin to move away from the first working position.
  • the present invention provides a first possible implementation manner of the first aspect, wherein the housing is provided with a chute;
  • the locking member is provided with a slider, and the slider is slidably connected to the chute;
  • the present invention provides a second possible implementation manner of the first aspect, wherein, along the sliding direction of the slider (31), the clearance gap (12) ) is 4mm to 5mm in size.
  • the present invention provides a third possible implementation manner of the first aspect, wherein the chute includes: a first guide groove and a second guide groove;
  • the first guide groove and the second guide groove are arranged at intervals;
  • the slider includes: a first protruding part and a second protruding part, and the first protruding part and the second protruding part are matched with the first guide groove and the second protruding part in a one-to-one correspondence.
  • the guide groove is a first protruding part and a second protruding part, and the first protruding part and the second protruding part are matched with the first guide groove and the second protruding part in a one-to-one correspondence.
  • the present invention provides a fourth possible implementation manner of the first aspect, wherein the void space includes: a first clearance and a second clearance;
  • the second station there is the first gap between the first protrusion and the end of the first guide groove away from the first station, and the second protrusion
  • the second gap is formed between the ends of the second guide groove away from the first station.
  • the present invention provides a fifth possible implementation manner of the first aspect, wherein the latching teeth are provided with a first locking portion;
  • the locking member In the first working position, the locking member is disengaged from the first locking portion
  • the locking member In the second working position, the locking member is engaged with the first locking portion.
  • the present invention provides a sixth possible implementation manner of the first aspect, wherein the latching teeth are provided with a second locking portion, and the second locking portion is adapted to match the locking pin ;
  • the present invention provides the seventh possible implementation manner of the first aspect, wherein a first elastic device is provided between the housing and the latching teeth, so The first elastic device has a tendency to switch the latching teeth from the locking state to the unlocking state.
  • the present invention provides an eighth possible implementation manner of the first aspect, wherein the ISOFIX mechanism further includes an opening and closing member, the opening and closing member is mounted on the housing, and the opening and closing member The piece is linked with the locking piece.
  • the present invention provides a ninth possible implementation manner of the first aspect, wherein a second elastic device is provided between the locking member and the housing;
  • the second elastic member has a tendency to move the locking member from the first station to the second station.
  • the safety seat provided by the present invention is configured with the ISOFIX mechanism provided in the first aspect.
  • the locking piece is movably connected to the housing, and the locking piece has a first station and a second station, and the latching teeth are in an unlocked state at the first station, and in the second station
  • the station locking member locks the teeth, and the locking member has a movement margin to move away from the first station. Even if the casing is bent by a collision, the locking member has a sufficient movement allowance relative to the casing, and then The locking piece can be prevented from being disengaged from the locking teeth, thereby improving the safety of the ISOFIX mechanism.
  • FIG. 1 is a schematic diagram 1 of the ISOFIX mechanism provided by an embodiment of the present invention when the locking member is in the second station;
  • Fig. 2 is the enlarged schematic diagram of position A in Fig. 1;
  • FIG. 3 is a schematic diagram of a housing, a latch and an opening and closing member of an ISOFIX mechanism provided by an embodiment of the present invention
  • FIG. 4 is a schematic diagram 2 of the ISOFIX mechanism provided by the embodiment of the present invention when the locking member is in the second station;
  • FIG. 5 is a schematic diagram 1 of the ISOFIX mechanism provided by the embodiment of the present invention when the locking member is in the first station;
  • FIG. 6 is a second schematic diagram of the ISOFIX mechanism provided by the embodiment of the present invention when the locking member is in the first station.
  • Icon 1-housing; 11-chute; 111-first guide slot; 112-second guide slot; 12-avoidance clearance; 121-first clearance; 122-second clearance; 2-clip; 21 - first locking part; 22 - second locking part; 3 - locking piece; 31 - sliding block; 311 - first convex part; 312 - second convex part; 4 - opening and closing part.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • installed should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • the ISOFIX mechanism provided by the embodiment of the present invention includes: a casing 1, a locking tooth 2 and a locking member 3; the locking member 3 is movably connected to the casing 1, And the locking member 3 has a first station and a second station; in the first station, the locking tooth 2 is in an unlocked state; at the second station, the locking member 3 locks the locking tooth 2, and the locking member 3 has a headroom to move away from the first station.
  • the locking member 3 is slidably connected to the housing 1, and when the locking member 3 moves from the second station to the first station, the locking member 3 is disengaged from the teeth 2, so that the teeth 2 can be switched to the unlocked state .
  • the locking member 3 When the locking member 3 is in the second working position, the locking member 3 still has a movement margin in the direction away from the first working position, so as to prevent the casing 1 from driving the locking member 3 to the first working position due to the bending of the casing 1
  • the locking member 3 is kept in the second working position, thereby ensuring that the locking teeth 2 are always kept in the locked state.
  • the locking member 3 locks the locking teeth 2 .
  • the locking tooth 2 is locked by the locking member 3, the locking tooth 2 is matched with the locking pin, and the locking tooth 2 keeps the locking state of the locking tooth 2, so as to prevent the ISOFIX mechanism from loosening.
  • the ISOFIX mechanism is impacted and causes bending deformation, since the locking member 3 has a movable margin relative to the casing 1 in the direction away from the first working position, it can be avoided that the locking member 3 is driven to the first working position due to the bending of the casing 1 position, so that the locking teeth 2 are always kept in the locked state.
  • the housing 1 is provided with a sliding groove 11 ;
  • the locking member 3 is provided with a sliding block 31 , and the sliding block 31 is slidably connected to the sliding groove 11 ; in the second station, the locking member 3 is provided with the sliding groove 11 There is a clearance gap 12 between the ends away from the first station.
  • the sliding block 31 is slidably connected to the sliding groove 11 , and the sliding block 31 has a first station and a second station along the extending direction of the sliding groove 11 .
  • the locking member 3 is disengaged from the locking teeth 2, so that the locking teeth 2 are in an unlocked state.
  • the locking member 3 is engaged with the locking teeth 2, so that the locking teeth 2 are in a locked state.
  • the size of the clearance gap 12 along the sliding direction of the slider 31 is 4 mm ⁇ 5 mm.
  • the size of the clearance gap 12 along the sliding direction of the sliding block 31 is the size of the movable margin for the locking member 3 to move away from the first working position when the second working position is used.
  • the size of the slider 31 is adapted to the width of the chute 11 , thereby ensuring that the slider 31 can slide smoothly along the chute 11 .
  • the size of the activity margin can be selected as 4.2mm, 4.5mm or 4.8mm.
  • the size of the clearance gap 12 should not be too large to avoid reducing the structural strength of the housing 1; if the size of the clearance gap 12 is too small, the size of the movement margin will be insufficient.
  • the movement margin is set to 4.5mm .
  • the sliding groove 11 includes: a first guide groove 111 and a second guide groove 112 ; along the moving direction of the locking member 3 , the first guide groove 111 and the second guide groove 111
  • the grooves 112 are arranged at intervals;
  • the slider 31 includes: a first raised part 311 and a second raised part 312, the first raised part 311 and the second raised part 312 are matched with the first guide groove 111 and the first guide groove 111 and the second raised part 312 in one-to-one correspondence.
  • Two guide grooves 112 Two guide grooves 112 .
  • the first protruding portion 311 is matched with the first guiding groove 111
  • the second protruding portion 312 is matched with the second guiding groove 112 , thereby ensuring that the locking member 3 can move smoothly along the sliding groove 11 .
  • the air-avoiding gap 12 includes: a first gap 121 and a second gap 122; in the second station, there is a space between the first protrusion 311 and the end of the first guide groove 111 away from the first station. There is a second gap 122 between the first gap 121 , the second protruding portion 312 and the end of the second guide groove 112 away from the first station.
  • the first protruding portion 311 can slide into the first gap 121, and the second protruding portion 312 can slide into the second gap 122, so as to ensure that the locking member 3 can be kept in the The second station, and the locking teeth 2 are stabilized in the locked state.
  • the tooth 2 is provided with a first locking portion 21 ; in the first station, the locking member 3 is disengaged from the first locking portion 21 ; in the second station, the locking member 3 is engaged with the first locking member 3 locking portion 21 .
  • the locking teeth 2 are rotatably connected to the housing 1, and the first locking portion 21 includes a notch or a locking groove.
  • the locking member 3 is inserted into the first locking portion 21 to prevent the locking teeth 2 from rotating.
  • the locking member 3 is pulled out from the first locking portion 21 , so that the locking teeth 2 can be rotated to an unlocked state to release the locking pin.
  • the tooth 2 is provided with a second locking portion 22 , and the second locking portion 22 is adapted to match the locking pin; in the locked state, the second locking portion 22 is fitted to the locking pin.
  • the second locking portion 22 includes a card slot.
  • the lock pin is inserted into the card slot, the locking tooth 2 rotates from the unlocked state to the locked state, and is matched with the first lock through the locking member 3 21 , so that the locking teeth 2 are kept in the locked state.
  • the sidewall of the latching slot blocks the insertion and extraction openings of the locking pins, and the latching teeth 2 are locked by the locking member 3, so that the latching teeth 2 are kept in the locked state.
  • a first elastic device is provided between the housing 1 and the tooth 2 , and the first elastic device has a tendency to switch the tooth 2 from the locking state to the unlocking state.
  • the first elastic device adopts a spring or a torsion spring, and the first elastic device drives the teeth 2 to switch from the locked state to the unlocked state.
  • the locking pin installed on the car abuts the locking tooth 2 and drives the locking tooth 2 to rotate from the unlocked state to the locked state.
  • the locking tooth 2 rotates to the locked state, the locking tooth 2 is locked.
  • the member 3 moves from the first station to the second station, so that the latch 2 is locked by the locking member 3, thereby keeping the latch 2 in the locked state.
  • the ISOFIX mechanism further includes an opening and closing member 4 , the opening and closing member 4 is installed on the housing 1 , and the opening and closing member 4 is linked with the locking member 3 .
  • the opening and closing member 4 includes an opening button, which is linked with the locking member 3. The opening and closing member 4 can drive the locking member 3 to move from the second station to the first station, thereby unlocking the locking teeth 2. .
  • a second elastic device is provided between the locking member 3 and the housing 1 ; the second elastic device has a tendency to move the locking member 3 from the first station to the second station.
  • the locking member 3 under the action of the elastic force of the second elastic device, the locking member 3 is kept in the second working position.
  • the lock pin is engaged with the second locking portion 22, and drives the tooth 2 to rotate from the unlocked state to the locked state, and the second elastic device drives the locking member 3 to move from the first station At the second station, the locking element 3 is engaged with the first locking portion 21 to lock the tooth 2 .
  • the safety seat provided by the embodiment of the present invention is configured with the ISOFIX mechanism provided by the first embodiment.
  • the safety seat can be installed on the car seat through the ISOFIX mechanism, and the locking teeth 2 are matched with the locking pin on the car, so that the safety seat is fixed relative to the car.
  • the locking member 3 has a movable margin relative to the casing 1 in the direction away from the first station, so as to avoid the bending of the casing 1 causing the locking member 3 to move to the first position.
  • One station moves, thereby preventing the locking member 3 from unlocking the locking teeth 2, so that the locking teeth 2 can always be kept in a locked state matched with the locking pin, thereby improving the safety of the safety seat.

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

Abstract

一种ISOFIX机构及安全座椅，涉及安全座椅技术领域，其中的ISOFIX机构，包括：壳体（1）、卡齿（2）和锁止件（3）；锁止件（3）活动连接于壳体（1），且锁止件（3）具有第一工位和第二工位；在第一工位，卡齿（2）处于解锁状态；在第二工位，锁止件（3）将卡齿（2）锁止，且锁止件（3）具有向背离第一工位移动的活动余量。该ISOFIX机构，即使壳体（1）受碰撞弯曲，锁止件（3）相对于壳体（1）具有足够的活动余量，可以避免锁止件（3）与卡齿（2）脱开，提高了ISOFIX机构的安全性。

Description

ISOFIX机构及安全座椅 技术领域
本发明涉及安全座椅技术领域，尤其是涉及一种ISOFIX机构及安全座椅。
背景技术
ISOFIX是指一种儿童约束系统与车辆连接的机构，在锁止状态下，采用锁止件将卡齿锁止，从而使卡齿保持锁固于锁销的状态。然而，若在交通事故中安全座椅受到来自侧面的碰撞，ISOFIX的壳体弯曲，受壳体作用锁止件将会与卡齿脱开，由此将导致座椅松脱，进而产生安全隐患。
发明内容
本发明的目的在于提供一种ISOFIX机构及安全座椅，以缓解现有技术中ISOFIX机构的壳体因弯曲而导致锁止件与卡齿脱开的技术问题。
第一方面，本发明提供的ISOFIX机构，包括：壳体、卡齿和锁止件；
所述锁止件活动连接于所述壳体，且所述锁止件具有第一工位和第二工位；
在所述第一工位，所述卡齿处于解锁状态；
在所述第二工位，所述锁止件将所述卡齿锁止，且所述锁止件具有向背离所述第一工位移动的活动余量。
结合第一方面，本发明提供了第一方面的第一种可能的实施方式，其中，所述壳体设有滑槽；
所述锁止件设有滑块，所述滑块滑动连接于所述滑槽；
在所述第二工位，所述锁止件与所述滑槽远离所述第一工位的端部之间具有避空间隙。
结合第一方面的第一种可能的实施方式，本发明提供了第一方面的第二种可能的实施方式，其中，沿所述滑块(31)的滑动方向，所述避空间隙(12)的尺寸为4mm～5mm。
结合第一方面的第一种可能的实施方式，本发明提供了第一方面的第三种可能的实施方式，其中，所述滑槽包括：第一导向槽和第二导向槽；
沿所述锁止件的移动方向，所述第一导向槽和所述第二导向槽间隔设置；
所述滑块包括：第一凸起部和第二凸起部，所述第一凸起部和所述第二凸起部一一对应地配合于所述第一导向槽和所述第二导向槽。
结合第一方面的第三种可能的实施方式，本发明提供了第一方面 的第四种可能的实施方式，其中，所述避空间隙包括：第一间隙和第二间隙；
在所述第二工位，所述第一凸起部与所述第一导向槽远离所述第一工位的端部之间具有所述第一间隙，所述第二凸起部与所述第二导向槽远离所述第一工位的端部之间具有所述第二间隙。
结合第一方面，本发明提供了第一方面的第五种可能的实施方式，其中，所述卡齿设有第一锁止部；
在所述第一工位，所述锁止件脱离所述第一锁止部；
在所述第二工位，所述锁止件配合于所述第一锁止部。
结合第一方面，本发明提供了第一方面的第六种可能的实施方式，其中，所述卡齿设有第二锁止部，所述第二锁止部用于与锁销相适配；
在锁止状态下，所述第二锁止部配合于所述锁销。
结合第一方面的第六种可能的实施方式，本发明提供了第一方面的第七种可能的实施方式，其中，所述壳体与所述卡齿之间设有第一弹性器件，所述第一弹性器件具有使所述卡齿自所述锁止状态切换至所述解锁状态的趋势。
结合第一方面，本发明提供了第一方面的第八种可能的实施方式，其中，所述ISOFIX机构还包括启闭件，所述启闭件安装于所述壳体，且所述启闭件与所述锁止件联动。
结合第一方面，本发明提供了第一方面的第九种可能的实施方式，其中，所述锁止件与所述壳体之间设有第二弹性器件；
所述第二弹性器件具有使所述锁止件自所述第一工位移动至所述第二工位的趋势。
第二方面，本发明提供的安全座椅配置有第一方面提供的ISOFIX机构。
本发明实施例带来了以下有益效果：采用锁止件活动连接于壳体，且锁止件具有第一工位和第二工位，在第一工位卡齿处于解锁状态，在第二工位锁止件将卡齿锁止，且锁止件具有向背离第一工位移动的活动余量，即使壳体受碰撞弯曲，锁止件相对于壳体具有足够的活动余量，进而可以避免锁止件与卡齿脱开，提高了ISOFIX机构的安全性。
为使本发明的上述目的、特征和优点能更明显易懂，下文特举较佳实施例，并配合所附附图，作详细说明如下。
附图说明
为了更清楚地说明本发明具体实施方式或相关技术中的技术方案，下面将对具体实施方式或相关技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的ISOFIX机构在锁止件处于第二工位的示意图一；
图2为图1中A位置的放大示意图；
图3为本发明实施例提供的ISOFIX机构的壳体、卡齿和启闭件的示意图；
图4为本发明实施例提供的ISOFIX机构在锁止件处于第二工位的示意图二；
图5为本发明实施例提供的ISOFIX机构在锁止件处于第一工位的示意图一；
图6为本发明实施例提供的ISOFIX机构在锁止件处于第一工位的示意图二。
图标：1-壳体；11-滑槽；111-第一导向槽；112-第二导向槽；12-避空间隙；121-第一间隙；122-第二间隙；2-卡齿；21-第一锁止部；22-第二锁止部；3-锁止件；31-滑块；311-第一凸起部；312-第二凸起部；4-启闭件。
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，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、 以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。公式中的物理量，如无单独标注，应理解为国际单位制基本单位的基本量，或者，由基本量通过乘、除、微分或积分等数学运算导出的导出量。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
实施例一
如图1、图2、图3和图4所示，本发明实施例提供的ISOFIX机构，包括：壳体1、卡齿2和锁止件3；锁止件3活动连接于壳体1，且锁止件3具有第一工位和第二工位；在第一工位，卡齿2处于解锁状态；在第二工位，锁止件3将卡齿2锁止，且锁止件3具有向背离第一工位移动的活动余量。
具体地，锁止件3滑动连接于壳体1，当锁止件3自第二工位移动至第一工位时，锁止件3脱离卡齿2，以便卡齿2能够切换至解锁状态。当锁止件3处于第二工位时，锁止件3向背离第一工位方向仍有活动余量，进而避免因壳体1弯曲而导致壳体1驱动锁止件3向第一工位移动，从而使锁止件3保持在第二工位，由此确保卡齿2始终保持在被锁止的状态。
需要说明的是，当锁止件3处于第二工位时，锁止件3将卡齿2锁止。当卡齿2被锁止件3锁止时，卡齿2配合于锁销，并且卡齿2保持配合于锁销的锁止状态，从而避免ISOFIX机构松脱。当ISOFIX机构受到撞击而导致弯曲变形时，由于锁止件3相对于壳体1向背离第一工位方向具有活动余量，可以避免因壳体1弯曲而驱动锁止件3向第一工位移动，进而使卡齿2始终保持在被锁止的状态下。
在本发明实施例中，壳体1设有滑槽11；锁止件3设有滑块31，滑块31滑动连接于滑槽11；在第二工位，锁止件3与滑槽11远离第一工位的端部之间具有避空间隙12。
具体的，滑块31滑动连接于滑槽11，并且沿滑槽11的延伸方向滑块31具有第一工位和第二工位。在第一工位时，锁止件3与卡齿2脱离，从而使卡齿2处于解锁状态。在第二工位时，锁止件3配合于卡齿2，从而使卡齿2处于锁止状态。此外，当锁止件3处于第二工位时，滑块31与滑槽11远离第一工位的端部之间具有避空间隙12。当壳体1受碰撞而产生弯曲时，滑槽11的延伸长度缩短，滑块31仍能在滑槽11内沿避空间隙12滑动，进而使滑块31能够保持在第二工位，并使卡齿2保持锁止状态。
进一步的，沿滑块31的滑动方向避空间隙12的尺寸为4mm～5mm。沿滑块31的滑动方向避空间隙12的尺寸即为在第二工位时锁止件3向背离第一工位移动的活动余量尺寸。沿垂直于滑块31移动的方向，滑块31的尺寸与滑槽11的宽度尺寸相适配，进而确保滑块31能够沿滑槽11平稳滑动。活动余量尺寸可选配为4.2mm、4.5mm或4.8mm。避空间隙12的尺寸不宜过大，以避免降低壳体1的结构强度；避空间隙12的尺寸过小则将导致活动余量尺寸不足，本实施 例选择将活动余量设定为4.5mm。
如图1、图2、图3和图5所示，滑槽11包括：第一导向槽111和第二导向槽112；沿锁止件3的移动方向，第一导向槽111和第二导向槽112间隔设置；滑块31包括：第一凸起部311和第二凸起部312，第一凸起部311和第二凸起部312一一对应地配合于第一导向槽111和第二导向槽112。
具体的，第一凸起部311配合于第一导向槽111，第二凸起部312配合于第二导向槽112，从而确保锁止件3能够沿滑槽11平稳移动。
本实施例中，避空间隙12包括：第一间隙121和第二间隙122；在第二工位，第一凸起部311与第一导向槽111远离第一工位的端部之间具有第一间隙121，第二凸起部312与第二导向槽112远离第一工位的端部之间具有第二间隙122。当壳体1受碰撞而产生弯曲时，第一凸起部311可向第一间隙121内滑动，第二凸起部312可向第二间隙122内滑动，从而确保锁止件3能够保持在第二工位，并使卡齿2稳定在锁止状态。
如图4所示，卡齿2设有第一锁止部21；在第一工位，锁止件3脱离第一锁止部21；在第二工位，锁止件3配合于第一锁止部21。
具体的，卡齿2转动连接于壳体1，第一锁止部21包括豁口或卡槽。在第二工位，锁止件3插设于第一锁止部21，以阻止卡齿2转动。在第一工位，锁止件3自所述第一锁止部21中拔出，从而使卡齿2能够转动至解锁状态以释放锁销。
如图4、图5和图6所示，卡齿2设有第二锁止部22，第二锁止部22用于与锁销相适配；在锁止状态下，第二锁止部22配合于锁销。
具体的，第二锁止部22包括卡槽，ISOFIX机构锁止时，锁销插设于卡槽内，卡齿2自解锁状态转动至锁止状态，通过锁止件3配合于第一锁止部21，从而使卡齿2保持在锁止状态。当卡齿2处于锁止状态时，卡槽的侧壁阻挡在锁销的插拔开口处，并通过锁止件3锁止卡齿2，从而使卡齿2保持锁止状态。
进一步的，壳体1与卡齿2之间设有第一弹性器件，第一弹性器件具有使卡齿2自锁止状态切换至解锁状态的趋势。
具体的，第一弹性器件采用弹簧或扭簧，通过第一弹性器件驱动卡齿2自锁止状态切换至解锁状态。当ISOFIX机构安装于汽车座椅时，安装在汽车上的锁销抵接卡齿2，并驱动卡齿2自解锁状态转动至锁止状态，当卡齿2转动至锁止状态时，锁止件3自第一工位移动至第二工位，从而通过锁止件3将卡齿2锁止，以此使卡齿2保持锁止状态。
进一步的，ISOFIX机构还包括启闭件4，启闭件4安装于壳体1，且启闭件4与锁止件3联动。其中，启闭件4包括开启按钮，开启按钮与锁止件3联动，通过启闭件4可驱动锁止件3自第二工位移动至第一工位，由此可将卡齿2解锁。
进一步的，锁止件3与壳体1之间设有第二弹性器件；第二弹性器件具有使锁止件3自第一工位移动至第二工位的趋势。
具体的，在第二弹性器件的弹力作用下，锁止件3保持在第二工位。当ISOFIX机构安装于汽车座椅时，锁销配合于第二锁止部22，并驱动卡齿2自解锁状态转动至锁止状态，第二弹性器件驱动锁止件3自第一工位移动至第二工位，通过锁止件3配合于第一锁止部21 将卡齿2锁止。
实施例二
如图1所示，本发明实施例提供的安全座椅配置有实施例一提供的ISOFIX机构。
具体地，安全座椅可通过ISOFIX机构安装在汽车座椅上，通过卡齿2配合汽车上的锁销，从而使安全座椅相对于汽车固定。当汽车受到侧面碰撞而导致壳体1弯曲变形时，锁止件3相对于壳体1向背离第一工位方向具有活动余量，从而避免因壳体1弯曲而导致锁止件3向第一工位移动，进而避免锁止件3将卡齿2解锁，可以使卡齿2始终保持配合于锁销的锁止状态，提高了安全座椅的安全性。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (11)

  1. 一种ISOFIX机构，其特征在于，包括：壳体(1)、卡齿(2)和锁止件(3)；
    所述锁止件(3)活动连接于所述壳体(1)，且所述锁止件(3)具有第一工位和第二工位；
    在所述第一工位，所述卡齿(2)处于解锁状态；
    在所述第二工位，所述锁止件(3)将所述卡齿(2)锁止，且所述锁止件(3)具有向背离所述第一工位移动的活动余量。
  2. 根据权利要求1所述的ISOFIX机构，其特征在于，所述壳体(1)设有滑槽(11)；
    所述锁止件(3)设有滑块(31)，所述滑块(31)滑动连接于所述滑槽(11)；
    在所述第二工位，所述锁止件(3)与所述滑槽(11)远离所述第一工位的端部之间具有避空间隙(12)。
  3. 根据权利要求2所述的ISOFIX机构，其特征在于，沿所述滑块(31)的滑动方向，所述避空间隙(12)的尺寸为4mm～5mm。
  4. 根据权利要求2所述的ISOFIX机构，其特征在于，所述滑槽(11)包括：第一导向槽(111)和第二导向槽(112)；
    沿所述锁止件(3)的移动方向，所述第一导向槽(111)和所述第二导向槽(112)间隔设置；
    所述滑块(31)包括：第一凸起部(311)和第二凸起部(312)，所述第一凸起部(311)和所述第二凸起部(312)一一对应地配合于所述第一导向槽(111)和所述第二导向槽(112)。
  5. 根据权利要求4所述的ISOFIX机构，其特征在于，所述避空间隙(12)包括：第一间隙(121)和第二间隙(122)；
    在所述第二工位，所述第一凸起部(311)与所述第一导向槽(111)远离所述第一工位的端部之间具有所述第一间隙(121)，所述第二凸起部(312)与所述第二导向槽(112)远离所述第一工位的端部之间具有所述第二间隙(122)。
  6. 根据权利要求1所述的ISOFIX机构，其特征在于，所述卡齿(2)设有第一锁止部(21)；
    在所述第一工位，所述锁止件(3)脱离所述第一锁止部(21)；
    在所述第二工位，所述锁止件(3)配合于所述第一锁止部(21)。
  7. 根据权利要求1所述的ISOFIX机构，其特征在于，所述卡齿(2)设有第二锁止部(22)，所述第二锁止部(22)用于与锁销相适配；
    在锁止状态下，所述第二锁止部(22)配合于所述锁销。
  8. 根据权利要求7所述的ISOFIX机构，其特征在于，所述壳体(1)与所述卡齿(2)之间设有第一弹性器件，所述第一弹性器件具有使所述卡齿(2)自所述锁止状态切换至所述解锁状态的趋势。
  9. 根据权利要求1所述的ISOFIX机构，其特征在于，所述ISOFIX机构还包括启闭件(4)，所述启闭件(4)安装于所述壳体(1)，且所述启闭件(4)与所述锁止件(3)联动。
  10. 根据权利要求1所述的ISOFIX机构，其特征在于，所述锁止件(3)与所述壳体(1)之间设有第二弹性器件；
    所述第二弹性器件具有使所述锁止件(3)自所述第一工位移动至所述第二工位的趋势。
  11. 一种安全座椅，其特征在于，所述安全座椅配置有权利要求1-10任一项所述的ISOFIX机构。
PCT/CN2021/088011 2020-08-28 2021-04-19 Isofix机构及安全座椅 WO2022041792A1 (zh)

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