WO2024060975A1 - Siège de sécurité de véhicule - Google Patents

Siège de sécurité de véhicule Download PDF

Info

Publication number
WO2024060975A1
WO2024060975A1 PCT/CN2023/116653 CN2023116653W WO2024060975A1 WO 2024060975 A1 WO2024060975 A1 WO 2024060975A1 CN 2023116653 W CN2023116653 W CN 2023116653W WO 2024060975 A1 WO2024060975 A1 WO 2024060975A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking
base
backrest
base body
operating handle
Prior art date
Application number
PCT/CN2023/116653
Other languages
English (en)
Chinese (zh)
Inventor
张有才
Original Assignee
好孩子儿童用品有限公司
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 好孩子儿童用品有限公司 filed Critical 好孩子儿童用品有限公司
Publication of WO2024060975A1 publication Critical patent/WO2024060975A1/fr

Links

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
    • B60N2/2875—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle inclinable, as a whole or partially
    • 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
    • B60N2/2821—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle having a seat and a base part
    • 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
    • B60N2/2869—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle rotatable about a vertical axis

Definitions

  • the invention relates to a car safety seat.
  • Different makes or models of cars usually have different degrees of inclination of the rear seat backrests.
  • the base body and the base back are usually fixedly connected.
  • the base back of the car safety seat is usually set to be in contact with the base body.
  • the bottom plane is at a certain inclination angle instead of being basically perpendicular to the bottom plane of the base body, which causes the seat body in the car safety seat to move forward a certain distance.
  • the object of the present invention is to provide a car safety seat that can be applied to various cars with rear seat backrests with different inclinations and has improved safety.
  • a car safety seat includes a base and a seat body arranged on the base.
  • the base includes a base body with a bottom plane and a base back located behind the base body and extending upward.
  • the base body and the base back are pivotally connected through the base back rotating shaft.
  • a locking mechanism is provided between the base body and the base back.
  • the locking mechanism has a locking working state and an unlocking working state. state, when the locking mechanism is in the locking working state, the base backrest is prohibited from rotating relative to the base body; when the locking mechanism is in the unlocking working state, the base backrest is allowed to rotate relative to the base body.
  • the base body rotates around the rotation axis of the base back; when the locking mechanism is in a locking working state, the base back has at least a first locking position and a second locking position relative to the base body.
  • the base backrest In the first locking position, the base backrest has the largest first inclination angle relative to the bottom plane of the base body.
  • the base backrest In the second locking position, the base backrest has a maximum angle relative to the bottom plane of the base body.
  • the bottom plane of the base body has a second inclination angle with the smallest angle.
  • the angle difference between the first tilt angle and the second tilt angle is 4 to 30 degrees.
  • the difference in tilt angle of the rear seat backrests of various cars on the market is usually within this range.
  • Combine the first tilt angle with the second tilt angle The angle difference is set within this range so that the safety seat can adapt to various cars on the market.
  • the angle difference between the first tilt angle and the second tilt angle is 10 degrees to 25 degrees.
  • the angle difference between the first inclination angle and the second inclination angle is 17 degrees to 22 degrees.
  • the locking mechanism includes:
  • a locking lever, the locking lever is slidably provided on the base backrest in the left and right direction;
  • An operating handle is connected to the locking rod, and the operating handle is used to pull the locking rod to slide along the base backrest;
  • a first locking hole, the first locking hole is opened on the base body
  • the second locking hole is also provided on the base body
  • the elastic member has a tendency to make the locking rod tend to switch from the unlocking working state to the locking working state.
  • the locking lever includes:
  • a left locking lever, the left locking lever is slidably provided on the left side of the base backrest in the left and right direction;
  • the right locking lever is slidably disposed on the right side of the base backrest in the left and right direction, and the left locking lever and the right locking lever are on the same straight line;
  • the first locking hole includes:
  • a first left locking hole wherein the first left locking hole is provided on the left side of the base body
  • a first right locking hole, the first right locking hole is opened on the right side of the base body
  • the second locking hole includes:
  • a second left locking hole, the second left locking hole is opened on the left side of the base body
  • a second right locking hole, the second right locking hole is opened on the right side of the base body
  • the operating handles include:
  • a left operating handle is connected to the inner end of the left locking lever and extends toward the rear of the base backrest;
  • the right operating handle is connected to the inner end of the right locking lever and faces the base backrest rear extension;
  • the elastic member abuts and is disposed between the left operating handle and the right operating handle.
  • the locking mechanism When the locking mechanism is in the first locking position, the outer surface of the left locking lever end and the outer end of the right locking lever are inserted into the first left locking hole and the first right locking hole respectively; when the locking mechanism is in the second locking position, the The outer end of the left locking lever and the outer end of the right locking lever are respectively inserted into the second left locking hole and the second right locking hole; when the locking mechanism is in the unlocking working state When, the outer end of the left locking lever is separated from the first left locking hole and the second left locking hole, and the outer end of the right locking lever is separated from the first right locking hole. and the second right locking hole.
  • the straight line where the left locking lever and the right locking lever are located is parallel to the straight line where the base backrest rotation axis is located.
  • the left operating handle is rod-shaped, and the axis line of the left operating handle is perpendicular to the axis line of the left locking lever; the right operating handle is rod-shaped, so The axis line of the right operating handle is perpendicular to the axis line of the right locking lever.
  • the left operating handle and the right operating handle are both covered with flexible materials.
  • the flexible material may be rubber, plastic, cotton, knitwear, etc.
  • the base backrest only has a first locking position and a second locking position relative to the base body.
  • the present invention has the following advantages compared with the prior art:
  • the car safety seat of the present invention has a base body and a base back that are rotationally connected, and the inclination angle of the base back and the bottom plane of the base body can be adjusted, so it can be applied to various cars with different rear seat back inclinations; and when the base When the backrest is in the second locking position relative to the base body, the inclination angle between the base backrest and the bottom plane of the base body is the smallest. At this time, the distance between the seat body and the front seat in the car safety seat is the largest. Even if a car accident occurs, the person sitting in the safety seat can The probability of children in the chair body being injured is significantly reduced, and the safety of the safety seat is significantly improved.
  • FIG1 is a perspective view of a car safety seat when the base backrest is in a first locking position
  • Figure 2 is a perspective view of the car safety seat when the base backrest is in the second locking position
  • Figure 3 is a schematic diagram of the base backrest rotating from the first locking position to the second locking position
  • Figure 4 is a top view of the base when the base backrest is in the first locking position and the locking mechanism is in the unlocking state;
  • FIG5 is a top view of the base when the base backrest is in the first locking position and the locking mechanism is in the locking working state;
  • Figure 6 is a cross-sectional view along the line B-B in Figure 4 or Figure 5;
  • Figure 7 is a top view of the base when the base backrest is in the second locking position and the locking mechanism is in the unlocking state;
  • Figure 8 is a top view of the base when the base backrest is in the second locking position and the locking mechanism is in the locking working state;
  • Fig. 9 is a cross-sectional view taken along the line B-B in Fig. 7 or 8.
  • 1-base 2-base body; 3-base backrest; 4-seat body; 5-base backrest shaft; 8-elastic member; 12-left locking lever; 13-right locking lever; 14-left locking lever The outer end of ;21-Second right locking hole.
  • this embodiment provides a car safety seat.
  • the car safety seat includes a base 1 and a seat body 4 arranged on the base 1, and the seat body 4 is used for children to sit.
  • the structure of the seat body 4 is not particularly limited, and a conventional seat body 4 in the prior art can be used.
  • the seat body 4 can include a seat back, a headrest and a seat.
  • Handles can be arranged on the left and right sides of the backrest to facilitate moving the seat, and the handles can be arranged on the left and right sides of the backrest in an inwardly recessed manner.
  • the base 1 includes a base body 2 with a bottom plane and a base back 3 located behind the base body 2 and extending upward.
  • the base body 2 and the base back 3 are pivotally connected through the base back rotating shaft 5.
  • the base back 3 can rotate relative to the base body 2, and the base back 3 can be adjusted relative to the base body 2.
  • the inclination angle of the bottom plane In order to enable the base back 3 to be adjusted and fixed at a specific tilt angle, in automobile safety
  • a locking mechanism is provided between the base body 2 and the base back 3 of the seat.
  • the locking mechanism has a locking working state and an unlocking working state.
  • the locking mechanism When the locking mechanism is in the locking working state, it prohibits the base back 3 from rotating relative to the base body 2, that is, the base back 3 and the base body 2 are relatively fixed; when the locking mechanism is in the unlocking working state, In this state, it allows the base back 3 to rotate relative to the base body 2 around the base back rotation axis 5. At this time, the inclination angle of the base back 3 relative to the base body 2 can be adjusted.
  • the base back 3 When the locking mechanism is in the locking working state, the base back 3 has at least a first locking position and a second locking position relative to the base body 2. In the first locking position, the base back 3 has the largest angle relative to the bottom plane of the base body 2. The first inclination angle (as shown in Figure 2), in the second locking position, the base back 3 has a second inclination angle with the smallest angle relative to the bottom plane of the base body 2 (as shown in Figure 3).
  • the base back 3 can have a first locking position, a second locking position, a third locking position or more locking positions relative to the base body 2, so as to be able to adjust the position at multiple different tilt angles. Locking the base backrest 3 further increases its adaptability to the car.
  • the base back 3 only has a first locking position and a second locking position relative to the base body 2, but the protection scope of the present invention is not limited by this embodiment.
  • the base back 3 of the car safety seat can be in the first locking position. At this time, the base back 3 is relative to the base body 2
  • the bottom plane has the first inclination angle with the largest angle.
  • the locking mechanism can be in the unlocking working state. At this time, the base back 3 can rotate relative to the base body 2
  • the base backrest shaft 5 rotates forward, and when the base backrest 3 is rotated to a high degree of fit with the car's rear seat backrest, the locking mechanism can be in a locked working state, thereby fixing the base backrest 3.
  • the car safety seat of the present invention has wider adaptability to car rear seats with different inclinations, can be used in various cars, and has improved safety.
  • the numerical values of the first inclination angle and the second inclination angle are not particularly limited, and preferably can match various existing cars with different inclination angles of the rear seat backrests, such as the angle difference between the first inclination angle and the second inclination angle. It is 4 degrees to 30 degrees, which can expand the use range of the car safety seat. In some embodiments, the angle difference between the first tilt angle and the second tilt angle is 10 degrees to 25 degrees; in some embodiments, the angle difference between the first tilt angle and the second tilt angle is 17 degrees to 22 degrees, The inclination angle between the rear seat backrest and the plane where the rear seat is located in most cars on the market is between 90 degrees and 120 degrees.
  • the car safety seat can be used in various cars. On the other hand, it will not cause excessive pressure on the base back 3 due to the first tilt angle being too large, thus requiring a material with sufficient strength as the base back 3, which increases Car Seat Cost.
  • the locking mechanism can be any mechanism or device that can realize the locking function, and its specific structure is not particularly limited.
  • the locking mechanism of this embodiment includes a locking lever, an elastic member 8, an operating handle, a first locking hole and a second locking hole, wherein the locking lever is slidably disposed on the base back 3 in the left and right direction, and the elastic member 8 abuts against On the locking rod, the operating handle is connected to the locking rod. The operating handle is used to pull the locking rod to slide along the base back 3.
  • the first locking hole and the second locking hole are both opened in the base body 2; when the locking mechanism is in the first locking position, When the locking mechanism is in the second locking position, the outer end of the locking rod is inserted into the second locking hole; when the locking mechanism is in the unlocking state, The outer end of the locking lever is disengaged from the first locking hole and the second locking hole; the elastic member 8 has a tendency to cause the locking lever to transition from the unlocking working state to the locking working state.
  • the elastic member 8 can be any elastic component, and its specific structure is not particularly limited. For example, it can be a spring, and the spring can be a compression spring.
  • the specific location of the operating handle is not particularly limited, as long as the operator of the car safety seat can easily operate it.
  • the base back 3 can be placed behind the base back 3, and a corresponding opening is provided so that the user can operate the operating handle.
  • the shapes of the first locking hole and the second locking hole are not particularly limited as long as they can be inserted into and locked by the outer end of the locking rod. Due to the existence of the elastic member 8, the locking mechanism will not easily switch from the locking working state to the unlocking working state, thereby ensuring that the locking rod is relatively stably inserted into the corresponding locking hole, ensuring the stability of the locking mechanism when it is in the locking working state.
  • the arrangement of the operating handle can make it more convenient for the operator to switch the locking mechanism from the locking working state to the unlocking working state.
  • the locking lever of this embodiment includes a left locking lever 12 and a right locking lever 13.
  • the left locking lever 12 is slidably disposed on the left side of the base back 3 in the left and right direction, and the right locking lever 13
  • the left locking lever 12 and the right locking lever 13 are on the same straight line.
  • the first locking hole includes a first left locking hole 18 and a first right locking hole 19 , wherein the first left locking hole 18 is opened on the left side of the base body 2, and the first right locking hole 19 is opened on the right side of the base body 2;
  • the second locking hole includes a second left locking hole 20 and a second right locking hole.
  • the operating handle includes a left operating handle 16 and a right operating handle 17, wherein the left
  • the operating handle 16 is connected to the inner end of the left locking lever 12 and extends toward the rear of the base back 3 .
  • the right operating handle 17 is connected to the inner end of the right locking lever 13 and extends toward the rear of the base back 3 .
  • the locking rod of the present invention is not limited to including the left locking rod 12 and the right locking rod 13.
  • the locking rod of the present invention can be a single locking rod, or it can be three or more rods on the same straight line. Root locking lever.
  • first locking hole of the present invention is not limited to include the first left locking hole 18 and the first right locking hole 19.
  • the first locking hole of the present invention can be a single locking hole or more locking holes;
  • the second locking hole of the present invention is not limited to including the second left locking hole 20 and the second right locking hole 21.
  • the second locking hole of the present invention can be a single locking hole or more locking holes;
  • the operating handle is not limited to include a left operating handle 16 and a right operating handle 17.
  • the operating handle of the present invention can be a single operating handle or multiple operating handles.
  • the elastic member 8 is disposed between the left operating handle 16 and the right operating handle 17.
  • the locking mechanism When the locking mechanism is in the first locking position, the outer end 14 of the left locking rod and the outer end 15 of the right locking rod are respectively inserted into the first left locking hole 18 and the first right locking hole 19; when the locking mechanism is in the second locking position, the outer end 14 of the left locking rod and the outer end 15 of the right locking rod are respectively inserted into the second left locking hole 20 and the second right locking hole 21; when the locking mechanism is in the unlocking working state, the outer end 14 of the left locking rod is disengaged from the first left locking hole 18 and the second left locking hole 20, and the outer end 15 of the right locking rod is disengaged from the first right locking hole 19 and the second right locking hole 21.
  • the use of the above-mentioned left-right symmetrically arranged locking mechanism can, on the one hand, increase the stability of the locking mechanism when it is in a locked working state, and on the other hand, it is more convenient for the operator of the car safety seat to operate the symmetrically arranged operating handles.
  • the straight line where the left locking lever 12 and the right locking lever 13 are located is parallel to the straight line where the base backrest rotation axis 5 is located, and the left operating handle 16 is rod-shaped.
  • the axis line of the handle 16 is perpendicular to the axis line of the left locking lever 12;
  • the right operating handle 17 is rod-shaped, and the axis line of the right operating handle 17 is perpendicular to the axis line of the right locking lever 13.
  • the left operating handle 16 and the right operating handle 17 can make the left operating handle 16 and the right operating handle 17 face directly behind the base back 3, and the base back 3 only needs to be relatively small.
  • the small space can accommodate two operating handles, and it is also more convenient for the operator to access the operating handles from behind the base backrest 3, so as to operate them conveniently when needed.
  • the left operating handle 16 and the right operating handle 17 can both be covered with flexible materials. After being covered with flexible materials, the operator will be more comfortable when operating the left operating handle 16 and the right operating handle 17 .
  • the flexible material can be any conventional flexible material, such as rubber, plastic, cotton, knitwear, etc.

Landscapes

  • 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

Siège de sécurité de véhicule. Un corps de base (2) et un dossier de base (3) sont reliés de manière pivotante et rotative au moyen d'un arbre rotatif de dossier de base (5), et un mécanisme de verrouillage dans un état de fonctionnement verrouillé et déverrouillé est disposé entre le corps de base (2) et le dossier de base (3) ; lorsque le mécanisme de verrouillage est dans l'état de fonctionnement verrouillé, le dossier de base (3) ne peut pas tourner par rapport au corps de base (2), et lorsque le mécanisme de verrouillage est dans l'état de fonctionnement déverrouillé, le dossier de base (3) peut tourner autour de l'arbre rotatif de dossier de base (5) par rapport au corps de base (2) ; lorsque le mécanisme de verrouillage est dans l'état de fonctionnement verrouillé, le dossier de base (3) comprend au moins une première position verrouillée et une seconde position verrouillée par rapport au corps de base (2) ; dans la première position verrouillée, le dossier de base (3) comprend un premier angle d'inclinaison maximal par rapport au plan inférieur du corps de base (2), et dans la seconde position verrouillée, le dossier de base (3) comprend un second angle d'inclinaison minimal par rapport au plan inférieur du corps de base (2). Le siège de sécurité de véhicule peut être approprié pour différents véhicules présentant différents degrés d'inclinaison de dossiers de siège arrière, et la sécurité est améliorée.
PCT/CN2023/116653 2022-09-19 2023-09-04 Siège de sécurité de véhicule WO2024060975A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211133742.2 2022-09-19
CN202211133742.2A CN115447454A (zh) 2022-09-19 2022-09-19 一种汽车安全座椅

Publications (1)

Publication Number Publication Date
WO2024060975A1 true WO2024060975A1 (fr) 2024-03-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/116653 WO2024060975A1 (fr) 2022-09-19 2023-09-04 Siège de sécurité de véhicule

Country Status (2)

Country Link
CN (1) CN115447454A (fr)
WO (1) WO2024060975A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115447454A (zh) * 2022-09-19 2022-12-09 好孩子儿童用品有限公司 一种汽车安全座椅

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CN2451440Y (zh) * 2000-11-23 2001-10-03 好孩子集团公司 婴儿推车上的托盘机构
JP2006015835A (ja) * 2004-06-30 2006-01-19 Delta Kogyo Co Ltd 補助シートバックのロック機構
WO2012116622A1 (fr) * 2011-03-01 2012-09-07 好孩子儿童用品有限公司 Siège auto pour enfant
CN107253457A (zh) * 2017-06-26 2017-10-17 好孩子儿童用品有限公司 儿童汽车座的底座及儿童汽车座
CN207106257U (zh) * 2017-06-26 2018-03-16 好孩子儿童用品有限公司 儿童汽车安全座
CN108528291A (zh) * 2018-04-25 2018-09-14 黄河科技学院 一种汽车用儿童保护装置
CN112440840A (zh) * 2019-08-29 2021-03-05 珠海弘点科技有限公司 儿童安全座椅
CN115447454A (zh) * 2022-09-19 2022-12-09 好孩子儿童用品有限公司 一种汽车安全座椅

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CN202636300U (zh) * 2012-05-14 2013-01-02 昆山威凯儿童用品有限公司 儿童餐椅的座椅调节机构
JP6708060B2 (ja) * 2016-08-29 2020-06-10 トヨタ紡織株式会社 乗物用シート
CN206351645U (zh) * 2017-01-10 2017-07-25 河北绿草地新能源股份有限公司 一种低速汽车座椅活动靠背锁定装置
EP3699025B1 (fr) * 2019-02-22 2022-04-06 BRITAX RÖMER Kindersicherheit GmbH Siège de sécurité enfant
CN216268820U (zh) * 2021-12-23 2022-04-12 上海御驾智能科技集团有限公司 一种座椅可转动的观光电动车

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2451440Y (zh) * 2000-11-23 2001-10-03 好孩子集团公司 婴儿推车上的托盘机构
JP2006015835A (ja) * 2004-06-30 2006-01-19 Delta Kogyo Co Ltd 補助シートバックのロック機構
WO2012116622A1 (fr) * 2011-03-01 2012-09-07 好孩子儿童用品有限公司 Siège auto pour enfant
CN107253457A (zh) * 2017-06-26 2017-10-17 好孩子儿童用品有限公司 儿童汽车座的底座及儿童汽车座
CN207106257U (zh) * 2017-06-26 2018-03-16 好孩子儿童用品有限公司 儿童汽车安全座
CN108528291A (zh) * 2018-04-25 2018-09-14 黄河科技学院 一种汽车用儿童保护装置
CN112440840A (zh) * 2019-08-29 2021-03-05 珠海弘点科技有限公司 儿童安全座椅
CN115447454A (zh) * 2022-09-19 2022-12-09 好孩子儿童用品有限公司 一种汽车安全座椅

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