Child safety seat of automobile

Abstract

An automobile child safety seat comprises a base, a seat body movably arranged on the base and a seat back connected with the seat body. The base is connected with a seat fixing device, and the seat fixing device is characterized in that the base is provided with a mounting hole, the seat is provided with a guide hole correspondingly communicated with the mounting hole, the seat fixing device is fixedly connected with a connecting piece, and the connecting piece sequentially penetrates through the mounting hole in the base and the guide hole in the seat. The base is connected with the seat fixing device through the first end of the connecting piece, and the second end or the periphery of the middle of the connecting piece is in sliding fit with the guide hole. A user only needs to fix the base and the first end of the connecting piece in the mounting hole and then enable the second end of the connecting piece to penetrate through the guide hole when mounting the seat on an automobile, so that fixed connection between the base and the ISOFIX system and relative sliding of the base and the seat can be completed at the same time, and the seat has the advantages of being convenient to mount, simple in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of seats for children which are specially suitable for vehicles, in particular to a child safety seat for vehicles. Background Art

[0002] The existing child safety seat for cars includes a base, a seat connected to the base, and a seat back connected to the seat; the base is generally fixed with a seat fixing device that can be fixedly connected to the ISOFIX interface on the car seat, and the seat fixing device is provided with an ISOFIX plug, and the ISOFIX interface can be directly plugged into the ISOFIX interface on the car seat, thereby fixing the child safety seat on the car seat. In the event of a collision or sudden deceleration of the car, the child safety seat can reduce the impact force on the child and limit the child's body movement to reduce the harm to them and ensure the child's safety in the car.

[0003] In order to facilitate users to adjust the distance between the base and the backrest relative to the car seat, in existing car child safety seats, a front-to-back position gear adjustment mechanism is often set between the seat and the base; the front-to-back position gear adjustment mechanism and the seat fixing device are independent structural components. For example, in the prior art, a Chinese invention patent with patent application number CN201710759920.5 (publication number CN107499202A) "A Child Safety Seat Adjustment Structure" discloses the connection relationship between the ISOFIX system, the base and the movable seat, and an ISOFIX interface device is set at the rear end of both sides of the base, and a telescopic locking mechanism is set between the ISOFIX interface device and the base. A long guide groove is opened on the movable seat, and the connecting screw passes through the long guide groove to install the movable seat at the bottom of the seat body, so that the ISOFIX system can be firmly connected to the base and the base and the relative sliding of the movable seat can be achieved. However, the above installation scheme requires a telescopic locking mechanism and connecting screws to install the safety seat on the car, and the connection structure is complex, the installation is inconvenient and the cost is high. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a car child safety seat with a simple connection structure, easy installation and low cost in view of the above-mentioned existing technical status.

[0005] The technical solution adopted by the utility model to solve the above technical problems is as follows: the car child safety seat includes a base, a seat movably arranged on the base and a seat back connected to the seat; the base is connected to a seat fixing device that can be fixedly connected to the ISOFIX interface on the car seat, and is characterized in that: the base is provided with a mounting hole, the seat is provided with a guide hole corresponding to the mounting hole, the seat fixing device is fixedly connected with a connecting piece, the connecting piece passes through the mounting hole on the base and the guide hole on the seat in sequence, the first end of the connecting piece connects the base with the seat fixing device, and the second end or the middle periphery of the connecting piece is slidably matched with the guide hole.

[0006] In order to facilitate the user to adjust the position of the seat, preferably, the second end of the connecting member is connected to a slider, and the slider is slidably matched with the guide hole. The setting of the slider avoids direct collision between the connecting member and the guide hole, reducing resistance.

[0007] In order to ensure the smooth movement of the slider, preferably, a sliding step is formed on the inner wall of the guide hole, and the lower surface of the slider is in sliding cooperation with the surface of the sliding step. The sliding step avoids the situation where the external thread of the connector is damaged after a long period of use, causing the slider to move downward and unable to slide in the sliding step. At the same time, the sliding cooperation between the lower surface of the slider and the surface of the sliding step further reduces the sliding resistance when the user adjusts the seat.

[0008] In order to facilitate users to adjust the seat and the height at the same time, preferably, the sliding step is inclined relative to the front-rear direction of the seat, and correspondingly, the lower surface of the slider is also inclined. When the slider slides relative to the sliding step, the height of the slider can rise or fall along the inclined surface.

[0009] In order to improve the comfort of the user during use, preferably, there is a gap between the upper surface of the slider and the upper surface of the guide hole, the outer wall of the connecting piece located in the guide hole is threadedly connected with a first bolt, the lower end of the first bolt abuts against the slider, the first bolt is located in the gap, and the upper surface of the first bolt is not higher than the upper surface of the guide hole. The setting that the upper surface of the first bolt is not higher than the upper surface of the guide hole prevents the user from being hit by the first bolt when sitting on the seat and affecting the user's experience; the setting that the lower end of the first bolt abuts against the slider prevents the slider from being squeezed upward by the sliding step and flying out during the adjustment process.

[0010] In order to facilitate the user to install the base, preferably, a fixing step is formed in the mounting hole, and the connecting piece located in the mounting hole is externally threaded with a second bolt, the second bolt abuts against the fixing step, and the second bolt and the fixing step together fix the base to the seat fixing device. The user completes the fixing of the seat fixing device to the base by passing the connecting piece through the mounting hole and then tightening the second bolt through the thread on the outer periphery of the connecting piece and the fixing step.

[0011] In order to facilitate the user to adjust the seat forward and backward, preferably, the base is provided with a plurality of gear slots arranged along the front and rear direction of the base; a front and rear position gear adjustment mechanism is provided between the base and the seat, and the front and rear position gear adjustment mechanism includes:

[0012] A gear lever, movably connected to the seat, capable of being inserted into any one of the plurality of gear slots;

[0013] The driving rod is connected to the gear lever and movably connected to the seat, and is used to drive the gear lever to move out of a gear slot or drive the gear lever to be inserted into another gear slot. The user can pull or push the driving rod to make the gear lever fall into different gear slots, thereby realizing the front and rear adjustment of the seat.

[0014] In order to facilitate users to adjust the position and height between the child and the front seat according to the size of the child, preferably, the gear slot includes a first gear slot, a second gear slot and a third gear slot, the bottom height of the first gear slot is lower than the bottom height of the second gear slot, and the bottom height of the second gear slot is lower than the bottom height of the third gear slot. The three gear slots with gradually decreasing heights from front to back allow users to adjust the seat to different heights and front and back positions.

[0015] In order to facilitate the user's adjustment operation, preferably, the rear end of the driving rod is rotatably connected to the lower side of the seat, the front end of the driving rod extends to the front side of the seat and is exposed, and the front end of the driving rod is provided with an action groove for the user to apply an action force. The user inserts a finger into the action groove and then pulls the front and rear position gear adjustment mechanism outward or pushes inward, thereby increasing the contact area with the front and rear position gear adjustment mechanism and preventing the hand from accidentally separating from the driving rod during the adjustment process.

[0016] In order to enhance the stability of the seat during adjustment, preferably, two seat fixing devices are provided and symmetrically arranged on both sides of the base, and two connecting pieces are provided above the seat fixing devices on both sides; correspondingly, two groups of mounting holes and guide holes are provided. The symmetrical arrangement of the connecting pieces, mounting holes and guide holes enables the seat to slide stably relative to the base, avoiding the seat from tilting after sliding adjustment.

[0017] Compared with the prior art, the advantages of the present invention are: the connecting piece is directly fixed on the seat fixing device, and the connecting piece is passed through the mounting hole and slidably matched with the guide hole. The installation of the ISOFIX system, the base and the seat can be completed only through the connecting piece. When installing it on the car, the user only needs to fix the base and the first end of the connecting piece in the mounting hole and then pass the second end of the connecting piece through the guide hole to simultaneously complete the fixed connection between the base and the ISOFIX system and the relative sliding of the base and the seat. It has the advantages of easy installation, simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0019] Figure 2 It is a structural explosion diagram of an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the assembly relationship of the connecting member, the first nut, the second nut, and the seat fixing device of the embodiment of the utility model;

[0021] Figure 4 A schematic diagram of the structure of a chair seat according to an embodiment of the utility model;

[0022] Figure 5 A cross-sectional view of the connection relationship of the connector of the embodiment of the utility model in a child safety seat of a car;

[0023] Figure 6 It is a structural schematic diagram of a base according to an embodiment of the utility model;

[0024] Figure 7 This is a schematic structural diagram of a front and rear position gear adjustment mechanism according to an embodiment of the utility model;

[0025] Figure 8 This is a cross-sectional view of the connection relationship of the front and rear position gear adjustment mechanism of an embodiment of the utility model in a child safety seat of a car. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 8The figure shows a preferred embodiment of the present invention. The child safety seat of the present invention is mainly used to carry small children in the car alone. Children of different ages have different sizes, so the child safety seat of the car needs to provide users with the function of adjustable seat position. In addition, in the process of installing the child safety seat of the car in the car, it is necessary to plug the ISOFIX connector on the seat fixing device with the ISOFIX interface fixed on the car seat to fix the child safety seat of the car with the car seat. At present, in the process of installing the child safety seat on the market, the fixed connection between the seat fixing device and the base, and the movable connection between the base and the movable seat are two sets of devices, which are troublesome to install and costly. Therefore, it will be beneficial to provide a child safety seat of the car with a simple connection structure, easy installation, low cost, and the ability to adjust the seat position. The detailed structure of the child safety seat of the car will be described below:

[0028] See also Figures 1 to 6 The child safety seat for a car includes a base 2, a seat 3 movably arranged on the base 2, and a seat back 30 connected to the seat 3, wherein the base 2 is connected to a seat fixing device 1 which can be fixedly connected to the ISOFIX interface on the car seat, the seat fixing device 1 is provided with an ISOFIX connector, the ISOFIX connector can be inserted into the ISOFIX interface and fixed, the base 2 is provided with a mounting hole 21, the seat 3 is provided with a guide hole 31 corresponding to the mounting hole 21, the seat fixing device 1 is fixedly connected with a connector 4, the connector 4 can be directly welded to the seat fixing device 1, the connector 4 passes through the mounting hole 21 on the base 2 and the guide hole 31 on the seat 3 in sequence, the first end of the connector 4 connects the base 2 to the seat fixing device 1, and the second end or the middle periphery of the connector 4 is slidably matched with the guide hole 31. The base 2 is provided with a third channel 23, and the seat 3 is provided with a guide member 6, which slides with the third channel 23. The upper surface of the front side of the base 2 is partially recessed downward to form a limiting groove 24, and the lower surface of the front side of the seat 3 is partially protruded downward to form a limiting block 33 adapted to the limiting groove 24.

[0029] See also Figures 3 to 5 The second end of the connecting member 4 is connected to a slider 41, and the slider 41 is slidably matched with the guide hole 31. The setting of the slider 41 avoids direct collision between the connecting member 4 and the guide hole 31, reduces resistance, and facilitates the user to adjust the position of the seat 3.

[0030] The inner wall of the guide hole 31 is formed with a sliding step 311, and the lower surface of the slider 41 is in sliding cooperation with the surface of the sliding step 311. The sliding step 311 prevents the slider 41 from moving downward and being unable to slide in the sliding step 311 due to the damage of the external thread of the connector 4 after a long period of use. At the same time, the sliding cooperation between the lower surface of the slider 41 and the surface of the sliding step 311 further reduces the sliding resistance when the user adjusts the seat 3, thereby ensuring the smooth movement of the slider 41.

[0031] The sliding step 311 is inclined relative to the front-rear direction of the seat 3, and correspondingly, the lower surface of the slider 41 is also inclined. When the slider 41 slides relative to the sliding step 311, the height of the slider 41 can be increased or decreased along with the inclined surface, which facilitates the user to adjust the seat 3 and the height at the same time.

[0032] There is a gap between the upper surface of the slider 41 and the upper surface of the guide hole 31. The outer wall of the connector 4 located in the guide hole 31 is threadedly connected with a first bolt 42. The lower end of the first bolt 42 abuts against the slider 41. The first bolt 42 is located in the gap, and the upper surface of the first bolt 42 is not higher than the upper surface of the guide hole 31. The setting that the upper surface of the first bolt 42 is not higher than the upper surface of the guide hole 31 prevents the user from being hit by the first bolt 42 when sitting on the seat 3 and affecting the experience; the setting that the lower end of the first bolt 42 abuts against the slider 41 prevents the slider 41 from being squeezed upward by the sliding step 311 and flying out during the adjustment process, thereby improving the comfort of the user when using it.

[0033] A fixing step 211 is formed in the mounting hole 21, and the connecting member 4 in the mounting hole 21 is externally threadedly connected with a second bolt 43, the second bolt 43 abuts against the fixing step 211, and the second bolt 43 and the fixing step 211 together fix the base 2 to the seat fixing device 1. The user can fix the seat fixing device 1 to the base 2 by passing the connecting member 4 through the mounting hole 21 and then tightening the second bolt 43 through the thread on the outer periphery of the connecting member 4 and the fixing step 211, which facilitates the user to install the base 2.

[0034] See also Figures 6 to 8The base 2 is provided with a plurality of gear slots 22 arranged along the front-to-back direction of the base 2; a front-to-back position gear adjustment mechanism 5 is provided between the base 2 and the seat 3, and the front-to-back position gear adjustment mechanism 5 includes a gear rod 51 and a driving rod 52, wherein the gear rod 51 is movably connected to the seat 3 and can be inserted into any one of the plurality of gear slots 22; the driving rod 52 is connected to the gear rod 51 and movably connected to the seat 3, and is used to drive the gear rod 51 to move out of a gear slot 22 or drive the gear rod 51 to be inserted into another gear slot 22. The user can pull or push the driving rod 52 to make the gear rod 51 fall into different gear slots 22, thereby realizing the front-to-back adjustment of the seat 3, which is convenient for the user to adjust the seat 3 front-to-back.

[0035] The gear slots 22 include a first gear slot 221, a second gear slot 222, and a third gear slot 223. The bottom height of the first gear slot 221 is lower than the bottom height of the second gear slot 222, and the bottom height of the second gear slot 222 is lower than the bottom height of the third gear slot 223. The three gear slots 22 with gradually decreasing heights from front to back allow the user to adjust the seat 3 to different heights and front and rear positions, making it convenient for the user to adjust the position and height relative to the front seat according to the size of the child.

[0036] The rear end of the driving rod 52 is rotatably connected to the lower side of the seat 3, and the front end of the driving rod 52 extends to the front side of the seat 3 and is exposed. The front end of the driving rod 52 is provided with an action groove 53 for users to apply an action force. The user inserts a finger into the action groove 53 and then pulls the front and rear position gear adjustment mechanism 5 outward or pushes it inward, which increases the contact area of ​​the front and rear position gear adjustment mechanism 5, prevents the hand from accidentally separating from the driving rod 52 during the adjustment process, and facilitates the user's adjustment operation.

[0037] There are two seat fixing devices 1, which are symmetrically arranged on both sides of the base 2. Two connecting members 4 are arranged above the seat fixing devices 1 on both sides; correspondingly, two groups of mounting holes 21 and guide holes 31 are arranged. The symmetrical arrangement of the connecting members 4, mounting holes 21 and guide holes 31 allows the seat 3 to slide stably relative to the base 2, avoids the seat 3 from tilting after sliding adjustment, and enhances the stability of the seat 3 during adjustment.

[0038] The user can perform the following actions on this car child safety seat:

[0039] 1) Installation in the car: After connecting the seat fixing device 1 to the ISOFIX system on the car, pass the mounting hole 21 of the base 2 through the connector 4, and use the second bolt 43 to tighten the base 2 and the seat fixing device 1 on the fixing step 211, then pass the guide hole 31 of the seat 3 through the connector 4, and install the slider 41 and the first bolt 42 on the second end of the connector 4 through the threads on the outer periphery of the connector 4 in sequence. The slider 41 contacts the surface of the sliding step 311, and the upper surface of the second bolt 42 does not exceed the upper surface of the guide hole 31, and the installation action is completed;

[0040] 2) Adjusting the front and rear position of the seat 3: The user inserts his finger into the action slot 53 to pull or push the driving rod 52, driving the gear lever 51 to move from one gear slot 22 to another gear slot 22. Since the bottom heights of different gear slots 22 are different, the front and rear position and height of the seat 3 relative to the base 2 change before and after the adjustment action, and the adjustment action is completed.

Claims

1. A child safety seat for a car, comprising a base (2), a seat (3) movably arranged on the base (2), and a seat back (30) connected to the seat (3); the base (2) is connected to a seat fixing device (1) which can be fixedly connected to an ISOFIX interface on a car seat, characterized in that: The base (2) is provided with a mounting hole (21), the seat (3) is provided with a guide hole (31) corresponding to and connected to the mounting hole (21), the seat fixing device (1) is fixedly connected with a connecting piece (4), the connecting piece (4) passes through the mounting hole (21) on the base (2) and the guide hole (31) on the seat (3) in sequence, the first end of the connecting piece (4) connects the base (2) with the seat fixing device (1), and the second end or the middle periphery of the connecting piece (4) is slidably matched with the guide hole (31).

2. The child safety seat for automobiles according to claim 1, characterized in that: The second end of the connecting member (4) is connected to a sliding block (41), and the sliding block (41) is slidably matched with the guide hole (31).

3. The child safety seat for automobiles according to claim 2, characterized in that: A sliding step (311) is formed on the inner wall of the guide hole (31), and the lower surface of the sliding block (41) is slidably matched with the surface of the sliding step (311).

4. The child safety seat for automobiles according to claim 3, characterized in that: The sliding step (311) is inclined relative to the front-rear direction of the seat (3), and correspondingly, the lower surface of the sliding block (41) is also inclined.

5. The child safety seat for automobiles according to claim 3 or 4, characterized in that: There is a gap between the upper surface of the slider (41) and the upper side surface of the guide hole (31); a first bolt (42) is threadedly connected to the outer wall of the connecting piece (4) located in the guide hole (31); the lower end of the first bolt (42) abuts against the slider (41); the first bolt (42) is located in the gap, and the upper side surface of the first bolt (42) is not higher than the upper side surface of the guide hole (31).

6. The child safety seat for automobiles according to claim 1, characterized in that: A fixing step (211) is formed in the mounting hole (21); a second bolt (43) is externally threadedly connected to a connecting piece (4) located in the mounting hole (21); the second bolt (43) abuts against the fixing step (211); the second bolt (43) and the fixing step (211) together fix the base (2) and the seat fixing device (1) together.

7. The child safety seat for automobiles according to claim 1, characterized in that: The base (2) is provided with a plurality of gear slots (22) arranged along the front-rear direction of the base (2); a front-rear position gear adjustment mechanism (5) is provided between the base (2) and the seat (3), and the front-rear position gear adjustment mechanism (5) comprises: A gear lever (51) movably connected to the seat (3) and capable of being inserted into any one of the plurality of gear slots (22); A driving rod (52) is connected to the shift rod (51) and movably connected to the seat (3) and is used to drive the shift rod (51) to move out of a certain shift slot (22) or to drive the shift rod (51) to snap into another shift slot (22).

8. The child safety seat for automobiles according to claim 7, characterized in that: The gear slot (22) comprises a first gear slot (221), a second gear slot (222) and a third gear slot (223), wherein the slot bottom height of the first gear slot (221) is lower than the slot bottom height of the second gear slot (222), and the slot bottom height of the second gear slot (222) is lower than the slot bottom height of the third gear slot (223).

9. The child safety seat for automobiles according to claim 7 or 8, characterized in that: The rear end of the driving rod (52) is rotatably connected to the lower side of the seat (3), the front end of the driving rod (52) extends to the front side of the seat (3) and is exposed, and the front end of the driving rod (52) is provided with an action groove (53) for users to apply an action force.

10. The child safety seat for automobiles according to claim 1, characterized in that: The seat fixing devices (1) are provided with two and are symmetrically arranged on both sides of the base (2), and two connecting members (4) are provided above the seat fixing devices (1) on both sides; correspondingly, the mounting holes (21) and the guide holes (31) are provided with two groups.

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