Chair back sideslip structure and child safety seat

Abstract

The utility model relates to the field of automobile safety supplies, and discloses a chair back sideslip structure and a child safety seat. The chair comprises a base and a chair back, the chair back is connected with the base in a sliding mode, the base or the chair back is provided with a deviation guide part, and when the chair back laterally moves and slides out relative to the base, the deviation guide part is suitable for driving the chair back to deviate towards the front end of the base. When the chair back slides out in a sideslip mode, the chair back can deviate towards the front end of the base by a certain angle under the action of the deviation guide part, limitation of space is avoided, the operable space after the chair back slides out is increased, and the flexibility after the chair back slides out in a sideslip mode is improved; the structure is simple, the cost is low, and the smoothness of sideslip of the chair back is also ensured; and the device can be better used in a limited automobile space, and is suitable for most automobile types.

Description

Technical Field

[0001] This utility model relates to the field of automotive safety products technology, specifically to a seat back sliding structure and a child safety seat. Background Technology

[0002] Child safety seats can have their backrests rotate 90 degrees relative to the base to face the car door. Furthermore, with the backrest facing the door, it can also extend and retract laterally relative to the base, improving the ease of retrieving a child. However, existing seatbacks slide out in a straight line. When the backrest slides out in a straight line, the space between the backrest and the front seats is much larger than the space between the backrest and the rear seat backs. Moreover, due to the structural limitations of the C-pillar in most car models, the space constraints during straight-line sliding affect the flexibility and smoothness of the backrest's movement. Utility Model Content

[0003] To address at least one of the aforementioned problems, this utility model first provides a backrest sliding structure, a base and a backrest, wherein the backrest is slidably connected to the base, and the base or the backrest is provided with an offset guide portion. When the backrest slides out laterally relative to the base, the offset guide portion is adapted to drive the backrest to offset toward the front end of the base.

[0004] Optionally, the base includes a base and a rotating disk, the rotating disk being rotatably connected to the base, and the chair back being slidably connected to the rotating disk and rotating synchronously.

[0005] Optionally, the offset guide is an arc-shaped guide rail assembly, which is mounted on the rotating disk, and the chair back is connected to the arc-shaped guide rail assembly.

[0006] Optionally, the outer wall of the rotating disk is provided with a sliding groove, the sliding groove extends through the rotating disk along the opening direction, and the sliding groove extends through the top of the rotating disk. The bottom of the chair back is inserted into the sliding groove and moves within the sliding groove, extending out of the sliding groove.

[0007] Optionally, the offset guide is a guide arc surface, which is disposed on the groove wall of the sliding groove.

[0008] Optionally, the two opposite walls of the sliding groove are provided with the guide arc surface, and the rotation axes of the two guide arc surfaces coincide.

[0009] Optionally, the chair back is provided with a mating arc surface that conforms to the guide arc surface.

[0010] Optionally, the base has a rotating groove at its top, and the rotating disk is inserted into the rotating groove.

[0011] Optionally, the outer wall of the base is provided with a clearance notch, and when the chair back slides to the side, the clearance notch is in communication with the sliding groove.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0013] 1. Because the front of the base has a larger space on the side of the car's front row, and the seat back will shift at a certain angle towards the front of the base under the action of the offset guide when it slides out, it is no longer limited by space, which increases the operating space after the seat back slides out and improves the flexibility after the seat back slides out.

[0014] 2. The offset guide is set as a guide arc surface, and the backrest is provided with a matching arc surface that fits the guide arc surface, so that when the backrest slides out, it can slide out along an elegant arc and deflect towards the front end of the base. The structure is simple and low cost, while also ensuring the smoothness of the backrest sliding out.

[0015] 3. When the seat back slides out to the side, it can be used better in the limited space of the car and is not easily restricted by the structure of the C-pillar of the car door, making it suitable for most car models.

[0016] In addition, this utility model provides a child safety seat, including the backrest side sliding structure as described above.

[0017] Compared to existing technologies, the child safety seat described in this utility model has the same advantages as the aforementioned backrest side-sliding structure, which will not be repeated here. Attached Figure Description

[0018] Figure 1 This is an exploded view of the base and backrest in an embodiment of this utility model;

[0019] Figure 2 This is a structural diagram showing the cooperation between the rotating disk, the chair back, and the offset guide in this embodiment of the present invention;

[0020] Figure 3 This is a structural diagram of the chair back in an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the state after the chair back is offset in an embodiment of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Base; 11. Base; 12. Rotating disc; 13. Rotating groove; 14. Sliding groove; 15. Relief notch; 2. Chair back; 21. Mating curved surface; 3. Offset guide. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figures 1-4This application will be described in further detail.

[0024] In a first aspect, this utility model embodiment provides a chair back side sliding structure, referring to... Figure 1 and Figure 2 The seat back sliding structure includes a base 1 and a seat back 2. The seat back 2 is rotatably and slidably connected to the base 1. The seat back 2 rotates relative to the base 1 and faces the rear of the car door. The seat back 2 can slide out to the side of the base 1 in a cantilevered state to facilitate the retrieval of a child from the seat back 2. The base 1 is provided with an offset guide 3. When the seat back 2 slides out to the side relative to the base 1, the offset guide 3 is adapted to drive the seat back 2 to offset towards the front end of the base 1, so that the front end of the seat back 2 tilts at a certain angle towards the front of the car, thereby improving the flexibility and smoothness of the seat back 2 after sliding out to the side.

[0025] Reference Figure 1 and Figure 2 The base 1 includes a base 11 and a rotating disk 12. The rear end of the base 11 is close to the backrest of the car seat and connected to the car seat via an ISOFIX system. A rotating groove 13 is formed on the top of the base 11, and the rotating disk 12 is inserted into the rotating groove 13, thereby reducing the space occupied by the rotating disk 12. The rotating disk 12 rotates relative to the base 11 through a rotating drive device installed inside the base 11, thereby achieving directional adjustment. The rotating drive device is prior art and a common device in the art, and will not be described in detail here.

[0026] The chair back 2 is connected to the rotating disk 12. When the rotating disk 12 rotates relative to the base 11, the chair back 2 will rotate synchronously with the rotating disk 12. In addition, the chair back 2 and the rotating disk 12 are slidably connected, so that the chair back 2 can be driven to move laterally while ensuring the stable cooperation between the rotating disk 12 and the base 11.

[0027] Reference Figure 1 and Figure 2 The outer wall of the rotating disk 12 is provided with a sliding groove 14, which extends through the top of the rotating disk 12. The bottom of the base 1 can be easily inserted into the sliding groove 14 from the top of the rotating disk 12 and slide within the sliding groove 14, thereby enabling the seat back 2 to move in a directional and stable manner when sliding sideways. When sliding sideways, the seat back 2 protrudes from the base 11 at the opening of the sliding groove 14 on the outer wall of the rotating disk 12, and is in a cantilevered state. The sliding groove 14 extends through the rotating disk 12 along the opening direction, so that the outer wall of the rotating disk 12 has two circumferentially spaced and symmetrical openings. Therefore, regardless of whether the base 11 is fixed to the left or right seat of the car, the seat back 2 can slide out from the corresponding opening of the sliding groove 14.

[0028] Since the rotating disk 12 is located in the rotating groove 13 and the base 1 is inserted in the sliding groove 14, two clearance notches 15 are opened at intervals and symmetrically on the outer side wall of the base 11. The two clearance notches 15 correspond to and are connected with the two openings of the sliding groove 14, so that the base 11 does not interfere with the side sliding of the chair back 2, thus ensuring the smoothness of the side sliding of the chair back 2.

[0029] In this embodiment, the offset guide 3 is preferably disposed on the rotating disk 12, thereby bringing the distance between the offset guide 3 and the chair back 2 closer and making the fit more stable. In another embodiment, the offset guide 3 may also be disposed on the base 11. In yet another embodiment, the offset guide 3 is disposed on the chair back 2.

[0030] Combination Figure 1 Reference Figure 2 and Figure 3 In this embodiment, the preferred offset guide 3 is a guide arc surface provided on the wall of the sliding groove 14. Guide arc surfaces are provided on both opposite walls of the sliding groove 14, resulting in a simple structure that allows the chair back 2 to slide out along an elegant arc and deflect towards the front end of the base 1. The rotation axes of both guide arc surfaces coincide with the rotation axis of the rotating disk 12, ensuring that the offset angle of the chair back 2 remains the same when sliding out from the left and right sides of the base 11. Both sides of the chair back 2 located in the sliding groove 14 are provided with mating arc surfaces 21, which fit snugly against the two guide arc surfaces, thus ensuring the smoothness of the chair back 2's side sliding. In another embodiment, the rotation axes of the two guide arc surfaces may not coincide with the rotation axis of the rotating disk 12, but the rotation axes of the two guide arc surfaces do coincide, resulting in different offset angles of the chair back 2 when sliding out from the left and right sides of the base 11.

[0031] In another embodiment, the offset guide 3 is an arc-shaped guide rail assembly. The arc-shaped guide rail assembly includes an arc-shaped track and a slider, which slides along the extension direction of the arc-shaped track. The arc-shaped track is bolted into the sliding groove 14; the slider is bolted to the chair back 2, thereby enabling the chair back 2 to offset when it slides out to the side.

[0032] Combination Figure 1 Reference Figure 2 and Figure 4 Let X be the angle between the backrest of the seat back 2 and the rear end of the base 11 after the seat back 2 slides out to the side. Then, 60° ≤ X ≤ 89°. The specific offset angle can be determined by the curvature of the offset guide 3. When X is 88°, the seat back 2 can avoid the structure at the C-pillar of the vehicle when it slides out to the side. When X is 61°, there is more space inside the vehicle for the seat back 2 to slide out to the side, and the operation is more flexible. In this embodiment, X is preferably 85°.

[0033] The implementation principle of the seat back sliding structure in this application embodiment is as follows: Before the seat back 2 needs to slide out, the rotating disk 12 will drive the seat back 2 to rotate towards the car door. Since the front end of the base 1 is closer to the front row of the car, when the seat back 2 slides out, it will be offset at a certain angle towards the front end of the base 1 under the action of the offset guide part 3. This makes the side sliding out of the seat back 2 relatively smooth within the limited car space, and increases the operable space after the seat back 2 slides out. It is suitable for most car models.

[0034] Secondly, another embodiment of this utility model provides a child safety seat with the backrest sliding structure described in the first aspect, which enables the child safety seat to be used better in limited car space, is not easily restricted by the structure of the C-pillar of the car door, and is suitable for most car models.

[0035] Similarly, the components included in the "components," "mechanisms," and "devices" of this disclosure can also be flexibly combined. They can be modularly produced according to actual needs and assembled as an independent module; or they can be assembled separately to form a module in this device. The division of the above-mentioned components in this disclosure is only one embodiment for ease of reading and is not intended to limit the scope of protection of this disclosure. Any technical solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this disclosure.

[0036] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0037] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0039] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. A chair back side slide structure characterized by: The chair back (2) is connected with the base (1) in sliding mode, the base (1) or the chair back (2) is provided with a deflection guide (3), when the chair back (2) slides out relative to the base (1), the deflection guide (3) is suitable for driving the chair back (2) to deflect towards the front end of the base (1).

2. The chair back side slide structure according to claim 1, characterized by: The base (1) comprises a base (11) and a rotating disc (12), the rotating disc (12) is connected with the base (11) in rotating mode, the chair back (2) is connected with the rotating disc (12) in sliding mode and rotates synchronously.

3. The chair back side slide structure according to claim 2, characterized by: The deflection guide (3) is an arc-shaped guide rail group, the arc-shaped guide rail group is installed on the rotating disc (12), and the chair back (2) is connected with the arc-shaped guide rail group.

4. The chair back side slide structure according to claim 2, characterized by: The outer wall of the rotating disc (12) is provided with a sliding groove (14), the sliding groove (14) penetrates the rotating disc (12) along the setting direction, and the sliding groove (14) penetrates the top of the rotating disc (12), the bottom of the chair back (2) is inserted into the sliding groove (14) and moves in the sliding groove (14) to overhang out of the sliding groove (14).

5. The chair back side slide structure according to claim 4, characterized by: The deflection guide (3) is a guide arc surface, the guide arc surface is arranged on the groove wall of the sliding groove (14).

6. The chair back side slide structure according to claim 5, characterized by: The opposite two groove walls of the sliding groove (14) are provided with the guide arc surfaces, and the rotation axes of the two guide arc surfaces coincide.

7. The chair back side slide structure according to claim 5, characterized by: The chair back (2) is provided with a matching arc surface (21) which is attached to the guide arc surface.

8. The side slide structure of any of claims 4-7, wherein: The top of the base (11) is provided with a rotating groove (13), and the rotating disc (12) is inserted into the rotating groove (13).

9. The chair back side slide structure of claim 8, wherein: The outer wall of the base (11) is provided with a gap notch (15), when the chair back (2) slides, the gap notch (15) and the sliding groove (14) are in communication with each other.

10. A child safety seat, characterized in that The chair back side sliding structure comprises the chair back side sliding structure as claimed in any one of claims 1-9. The chair back side sliding structure comprises the chair back side sliding structure as claimed in any one of claims 1-9.

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