Safety seat and rotation limiting structure thereof

Abstract

A safety seat and a rotation limiting structure thereof. The rotation limiting structure of the safety seat comprises a base (30) and a rotating disk (20), wherein the rotating disk (20) is rotationally connected to the base (30) and has a first use state and a second use state, and the rotating disk (20) is provided with a first limiting portion (21); and the base (30) is provided with a limiting member (40) and a setting adjustment member (50), wherein the limiting member (40) is slidably connected to the base (30), and the setting adjustment member (50) is adapted to control the limiting member (40) to slide in the height direction of the base (30), so as to switch the limiting member (40) between a first setting and a second setting. When in the first setting, the limiting member (40) is located in a rotation path of the first limiting portion (21), and the rotating disk (20) is in the first use state in this case. When the limiting member (40) is in the second setting, the rotating disk (20) is in the second use state.

Description

Child safety seat and its rotation limiting structure Technical Field

[0001] This application relates to the field of child safety seat technology, specifically to a safety seat and its rotation limiting structure. Background Technology

[0002] A child safety seat is a device installed in a car seat to restrain a child passenger. Because infants' heads are relatively heavy and the bones and muscles supporting their heads are not yet fully developed, they may suffer injuries to their cervical spine, ligaments, and other parts when subjected to a large acceleration impact in an accident. Installing a child safety seat rear-facing in the car seat can cushion the child's head and prevent excessive forward tilting of the head.

[0003] However, when children are still infants or toddlers, due to misoperation or a lack of parental safety awareness, parents may mistakenly install the car seat forward-facing, causing the car seat to fail to provide adequate protection for the child. Summary of the Invention

[0004] One objective of this application is to provide a rotation limiting structure for a car seat that can prevent incorrect orientation settings and is simple in structure and easy to operate.

[0005] Another objective of this application is to provide a safety seat that utilizes the aforementioned rotational limiting structure.

[0006] To achieve one of the objectives of this application, the technical solution adopted in this application is as follows: It includes a base and a rotating disk, the rotating disk being rotatably connected to the base and having a first usage state and a second usage state. The rotating disk is provided with a first limiting part, and the base is provided with a limiting member and a gear adjustment member. The limiting member is slidably connected to the base, and the gear adjustment member is adapted to control the limiting member to slide along the height direction of the base, so that the limiting member switches between a first gear and a second gear. When the limiting member is in the first gear, it is located on the rotation path of the first limiting part, at which time the rotating disk is in the first usage state. When the limiting member is in the second gear, the rotating disk is in the second usage state.

[0007] As a preferred embodiment, two limiting members are provided, and the two limiting members are spaced apart. When the rotating disk rotates in a clockwise direction, the first limiting part is adapted to be abutted by one of the limiting members, and when the rotating disk rotates in a counterclockwise direction, the first limiting part is adapted to be abutted by the other limiting member.

[0008] As a preferred embodiment, the limiting member includes a base, a second limiting portion, a first connecting portion, and a second connecting portion. The second limiting portion, the first connecting portion, and the second connecting portion are respectively disposed on different sides of the base. The second limiting portion protrudes relative to the base toward the rotating disk and is adapted to abut against the first limiting portion. The first connecting portion protrudes relative to the base toward the gear adjusting member and is connected to the gear adjusting member. The second connecting portion protrudes relative to the base away from the rotating disk and is slidably connected to the base.

[0009] As a preferred embodiment, the first limiting portion is a limiting protrusion.

[0010] As a preferred embodiment, an elastic element is provided between the limiting member and the base. The elastic element is adapted to support the limiting member in the first position. One side of the limiting member is provided with an abutting surface, which is adapted to abut against the limiting protrusion to stop the rotating disk from rotating. The other opposite side of the limiting member is provided with a guide slope, which is adapted to abut against the guide slope, forcing the limiting member to leave the first position to avoid the limiting protrusion.

[0011] As a preferred embodiment, the limiting protrusion is an elongated structure extending along an arc, the center of which is located on the rotation axis of the rotating disk. When the rotating disk rotates relative to the base to the left and right sides facing the base, the end faces of the two ends of the limiting protrusion along its length are adapted to abut against the limiting member.

[0012] As a preferred embodiment, the gear adjustment component is a pull rod, which is slidably connected to the base and includes a hand-held part and a linkage part connected to each other. The hand-held part is at least partially exposed outside the base, and the linkage part is disposed inside the base. The linkage part is provided with a limiting inclined surface suitable for abutting against the limiting member. When the pull rod slides, the limiting member rises and falls along the limiting inclined surface.

[0013] As a preferred embodiment, the linkage further includes a first limiting plane and a second limiting plane disposed at both ends of the limiting inclined surface. The first limiting plane is adapted to lock the limiting member in the first position, and the second limiting plane is adapted to lock the limiting member in the second position. As a preferred embodiment, the base includes a detachably connected upper cover and a lower cover. A mounting cavity suitable for mounting the rotating disc, the limiting member, and the gear adjustment member is formed between the upper cover and the lower cover. The upper cover is also provided with a gear indicator window. The gear adjustment member is slidably connected to the base and partially exposed within the gear indicator window to indicate the current gear position of the limiting member.

[0014] To achieve one of the objectives of this application, the technical solution adopted in this application is: a safety seat that uses any of the rotation limiting structures described above.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: By controlling the raising and lowering of the limiting member through the gear adjustment component, the limiting member can interfere with or separate from the first limiting part of the rotating disk, thereby achieving selective anti-rotation of the rotating disk. Thus, when the child is an infant, the limiting member can be adjusted to the first position, at which time the rotating disk is in its first usage state, and the limiting member can prevent the rotating disk from switching from a reverse installation state to a forward installation state. When the child grows older, the limiting member can be adjusted to the second position, at which time the rotating disk is in its second usage state, and the rotation paths of the limiting member and the first limiting part are staggered, allowing the car seat to achieve 360° omnidirectional rotation, preventing misuse of the car seat. Furthermore, the entire rotating limiting structure has the advantages of simple structure and ease of operation. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the structure of a child safety seat in some embodiments of this application;

[0017] Figure 2 is a schematic diagram of the exploded structure of a child safety seat in some embodiments of this application;

[0018] Figure 3 is a partial cross-sectional schematic diagram of the rotation limiting structure in some embodiments of this application;

[0019] Figure 4 is a schematic diagram of the gear adjustment component in some embodiments of this application;

[0020] Figure 5 is a schematic diagram of the structure of the limiting member in some embodiments of this application;

[0021] Figure 6 is a schematic diagram of the structure of the rotating disk in some embodiments of this application;

[0022] Figure 7 is a schematic diagram of the rotation limiting structure when the limiting member is in the second position in some embodiments of this application;

[0023] Figures 8 and 9 are schematic diagrams of the rotation limiting structure when the limiting member is in the first position in some embodiments of this application;

[0024] Figure 10 is a schematic diagram of the limiting protrusion and the guide slope in some embodiments of this application;

[0025] In the diagram: 10, chair back; 20, rotating disc; 21, first limiting part; 30, base; 31, upper cover; 31a, gear position indicator window; 32, lower cover; 3a, mounting cavity; 40, limiting member; 41, base; 42, second limiting part; 421, abutting surface; 422, guide slope; 43, first connecting part; 44, second connecting part; 50, gear position adjustment member; 51, linkage part; 511, first limiting plane; 512, limiting slope; 513, second limiting plane; 51a, slide groove; 52, handhold part; 60, elastic member. Detailed Implementation

[0026] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. They should not be construed as limiting the specific protection scope of this application.

[0028] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0030] Referring to Figures 1 and 2, this application provides a child safety seat, which includes a backrest 10, a rotating disc 20, and a base 30. The base 30 is adapted to be fixedly connected to a car seat. The backrest 10 is rotatably mounted on the base 30 via the rotating disc 20. The backrest 10 is used for a child to sit on. The rotating disc 20 generally has a forward-facing installation state and a rear-facing installation state. By rotating the rotating disc 20 relative to the base 30, the forward-facing and rear-facing installation of the backrest 10, i.e., the forward-facing and rear-facing installation of the child safety seat, can be achieved. It is understood that when the rotating disc 20 is in the forward-facing installation state, the child safety seat is forward-facing; when the rotating disc 20 is in the rear-facing installation state, the child safety seat is rear-facing. The rotating disc 20 can be a component independent of the backrest 10, or it can be formed as a part of the backrest 10.

[0031] In some embodiments, the rotating disc 20 can also rotate to the left and / or right side facing the base 30, at which point the backrest 10 faces the left and / or right side, facilitating children's seating and disembarking. Of course, in some cases, the rotating disc 20 can also rotate relative to the base 30 to other angles besides the four positions of forward, reverse, left, and right.

[0032] To prevent parents from misusing car seats, for example, to prevent parents from installing a car seat forward-facing when it needs to be installed rear-facing, this application provides a rotation limiting structure applicable to car seats. Referring to Figures 3-10, it includes a base 30 and a rotating disk 20. The rotating disk 20 is rotatably connected to the base 30 and has a first usage state and a second usage state. The rotating disk 20 is provided with a first limiting part 21. The base 30 is provided with a limiting member 40 and a gear adjustment member 50. The limiting member 40 is slidably connected to the base 30. The gear adjustment member 50 is adapted to control the limiting member 40 to slide along the height direction of the base 30, so that the limiting member 40 switches between the first gear and the second gear. When the limiting member 40 is in the first gear, it is located on the rotation path of the first limiting part 21. At this time, the rotating disk 20 is in the first usage state. When the limiting member 40 is in the second gear, the rotating disk 20 is in the second usage state. In Figure 3, the solid line indicates that the gear adjustment component 50 controls the limit component 40 to be in the first gear position, and the dashed line indicates that the gear adjustment component 50 controls the limit component 40 to be in the second gear position.

[0033] This application controls the raising and lowering of the limiting member 40 through the gear adjustment member 50, allowing the limiting member 40 to interfere with or separate from the first limiting part 21 of the rotating disk 20, thus selectively stopping the rotation of the rotating disk 20. This gives the rotating disk 20 two different usage states. In the first usage state, the rotating disk 20 can have a fixed position, such as being installed in reverse, or it can have a rotation range. For example, as shown in Figure 8, with the rotating disk 20 facing directly in front of the base 30 as the initial state and clockwise as the rotation reference direction, the rotating disk 20 can rotate between an angle of 90° and 270° from the initial state. That is, the rotating disk 20 can switch between three states: backward, left, and right, as shown by the arrows in the figure. Similarly, in the second usage state, the rotating disk 20 can have a fixed position or a rotation range. For example, as shown in Figure 7, the rotating disk 20 can rotate 360°. In Figures 7 and 8, dashed lines indicate other positions of the first limiting part 21 during rotation.

[0034] In some specific embodiments, the rotating disc 20 can be locked in a reverse-facing installation state in the first usage state, preventing it from switching to a forward-facing installation state. In the second usage state, the rotating disc 20 can be in a forward-facing installation state. When the child is an infant, the limiting member 40 can be adjusted to the first position to prevent the rotating disc 20 from being incorrectly adjusted to the forward-facing installation state. As the child grows older, the limiting member 40 can be adjusted to the second position, offsetting the rotation path of the limiting member 40 from that of the first limiting part 21, allowing the rotating disc to rotate to the forward-facing installation state. By setting the usage states of the rotating disc 20, misuse of the car seat is prevented, and the entire rotating limiting structure has the advantages of simple structure and ease of operation.

[0035] In some embodiments, two limiting members 40 are provided, and the two limiting members 40 are spaced apart. When the rotating disk 20 rotates in a clockwise direction, the first limiting part 21 is adapted to be abutted by one of the limiting members 40. When the rotating disk rotates in a counterclockwise direction, the first limiting part 21 is adapted to be abutted by the other limiting member 40.

[0036] More specifically, the first limiting part 21 can be an arc-shaped elongated protrusion located on the front side of the rotating disk 20, and two limiting members 40 are respectively located on the left and right sides of the base 30. The two ends of the first limiting part 21 abut against the two limiting members 40, which helps to reduce the length required for the first limiting part 21. In other embodiments, the first limiting part 21 can obviously also be set as two mutually spaced protrusions, or a groove-like structure.

[0037] In some embodiments, referring to Figures 3 and 5, the limiting member 40 includes a base 41, a second limiting part 42, a first connecting part 43, and a second connecting part 44. The second limiting part 42, the first connecting part 43, and the second connecting part 44 are respectively disposed on different sides of the base 41. The second limiting part 42 protrudes relative to the base 41 toward the rotating disk 20 and is adapted to abut against the first limiting part 21. The first connecting part 43 protrudes relative to the base 41 toward the gear adjusting member 50 and is connected to the gear adjusting member 50. The second connecting part 44 protrudes relative to the base 41 away from the rotating disk 20 and is slidably connected to the base 30.

[0038] Furthermore, a spring can be fitted onto the second connecting part 44. The spring acts as an elastic element 60, which can extend and retract along the height direction of the base 30 to provide a reset force for the limiting member 40 to return to the first position, and can also guide the limiting member 40 to rise and fall along the height direction.

[0039] Furthermore, in order to enable the forward-facing car seat to be adjusted to the rear-facing installation state more quickly when the limiting member 40 is in the first position, or when the rotating disc 20 is in the first use state, as shown in Figure 9, when the rotating disc 20 rotates to the left and right, at least one of the limiting member 40 or the first limiting part 21 can automatically adapt to raise and lower to avoid the other. And when the first limiting part 21 rotates away from the limiting member 40, the limiting member 40 or the first limiting part 21 can automatically reset in the height direction, so that the car seat can be quickly adjusted to the rear-facing installation state without operating the gear adjustment member 50.

[0040] In some embodiments, referring to FIG6, the first limiting portion 21 is a limiting protrusion. The limiting protrusion protrudes downward along the height direction of the base 30 relative to the surrounding portion of the rotating disk 20, thereby adapting to interference with the limiting member 40 during rotation. Of course, in other embodiments, the possibility of the first limiting portion 21 being a groove cannot be ruled out. When the rotating disk 20 rotates, the limiting member 40 can slide within the groove. When the rotating disk 20 rotates to the left or right, the limiting member 40 abuts against the two ends of the groove along its length, thereby stopping the rotation of the rotating disk 20. The first limiting portion 21 is set as a protrusion so that the wall thickness of the corresponding local part of the rotating disk 20 in the height direction does not decrease but increases, which is beneficial to strengthening the structural strength. Moreover, the protrusion is easier to process than the long, arc-shaped groove.

[0041] In some embodiments, the limiting member 40 is disposed below the rotating disk 20, and the limiting protrusion is configured to protrude downwards. The limiting member 40 is disposed on the side of the rotating disk 20 away from the backrest 10, thereby avoiding interference with the backrest 10. Compared to disposing the limiting member 40 above the rotating disk 20, there is no need to consider the interference problem between the backrest 10 and the limiting member 40.

[0042] In some embodiments, an elastic member 60 is provided between the limiting member 40 and the base 30. The elastic member 60 is adapted to support the limiting member 40 in a first position. Referring to FIG10, an abutment surface 421 is provided on one side of the limiting member 40, which is adapted to abut against the limiting protrusion to stop the rotation of the rotating disk 20. A guide slope 422 is provided on the opposite side of the limiting member 40. Specifically, the guide slope 422 is provided on the second limiting part 42, and the guide slope 422 is disposed opposite to the abutment surface 421. When the limiting member 40 is in the first position and the rotating disk 20 switches from the forward installation state to the reverse installation state, the limiting protrusion abuts against the guide slope 422, forcing the limiting member 40 to move away from the first position and towards the second position to avoid the limiting protrusion. Due to the elastic element 60, when the rotating disc 20 rotates to the point where the first limiting part 21 disengages from the limiting element 40, the limiting element 40 can automatically return to the first position, preventing the rotating disc 20 from rotating back to the forward-facing state. In other words, this restricts the child safety seat to a rear-facing installation position. The elastic element 60 can specifically be a spring, which can directly abut against the side of the limiting element 40 away from the rotating disc 20 and the base 30, simplifying installation. Alternatively, the elastic element 60 can also be a torsion spring, tension spring, or other similar structure.

[0043] In some embodiments, the limiting protrusion is an elongated structure extending along an arc, the center of which is located on the rotation axis of the rotating disk 20. When the rotating disk 20 rotates relative to the base 30 to the left or right sides facing the base 30, the end faces of both ends of the limiting protrusion in the length direction abut against the limiting member 40 in the first position. This structural arrangement allows the limiting protrusion to continuously press the limiting member 40 downward, enabling the child safety seat to smoothly switch from a forward-facing installation state to a rear-facing installation state. It is understood that the limiting protrusion can also be configured with other structures, such as two separate protrusions, one abutting against the limiting member 40 when the rotating disk 20 faces left, and the other abutting against the limiting member 40 when the rotating disk 20 faces right.

[0044] In some embodiments, referring to Figures 3 and 4, the gear adjustment member 50 is a pull rod, which is slidably connected to the base 30 and includes a hand-held part 52 and a linkage part 51 connected to each other. The hand-held part 52 is at least partially exposed outside the base 30 so as to operate the pull rod. The linkage part 51 is disposed inside the base 30 and is provided with a limiting inclined surface 512 suitable for abutting against the limiting member 40. When the pull rod slides, the limiting member 40 rises and falls along the limiting inclined surface 512.

[0045] In some embodiments, the linkage 51 further includes a first limiting plane 511 and a second limiting plane 513 disposed at both ends of the limiting inclined surface 512. The first limiting plane 511 is adapted to lock the limiting member 40 in a first position, and the second limiting plane 513 is adapted to lock the limiting member 40 in a second position.

[0046] Furthermore, the linkage part 51 is provided with a slide groove 51a. The top of the slide groove 51a is provided with a first limiting plane 511, a limiting inclined surface 512, and a second limiting plane 513 in sequence. The limiting member 40 passes through the slide groove 51a through the first connecting part 43 and abuts against the top of the slide groove 51a to achieve connection with the pull rod. The connection method is simple and easy to install.

[0047] In some embodiments, the base 30 includes a detachably connected upper cover 31 and a lower cover 32, with a mounting cavity 3a formed between the upper cover 31 and the lower cover 32, suitable for mounting the rotary disc 20, the limiting member 40, and the gear adjustment member 50. The upper cover 31 and the lower cover 32 are detachably connected so that components such as the limiting member 40 and the gear adjustment member 50 can be installed in the mounting cavity 3a.

[0048] Furthermore, the upper cover 31 is also provided with a gear position indicator window 31a. The gear position adjustment component 50 is slidably connected to the base 30 and is partially exposed within the gear position indicator window 31a to indicate the current gear position of the limiting component 40. Specifically, the handheld part 52 can also be at least partially exposed within the gear position indicator window 31a, saving space, centralizing the gear position indicator and gear position adjustment, and simultaneously providing a prompt when the parent adjusts the gear.

[0049] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A rotation limiting structure for a child safety seat, characterized in that: The device includes a base and a rotating disk. The rotating disk is rotatably connected to the base and has a first usage state and a second usage state. The rotating disk is provided with a first limiting part. The base is provided with a limiting member and a gear adjustment member. The limiting member is slidably connected to the base. The gear adjustment member is adapted to control the limiting member to slide along the height direction of the base, so that the limiting member switches between a first gear and a second gear. When the limiting member is in the first gear, it is located on the rotation path of the first limiting part. At this time, the rotating disk is in the first usage state. When the limiting member is in the second gear, the rotating disk is in the second usage state.

2. The rotation limiting structure of the safety seat as described in claim 1, characterized in that: The limiting member is provided in two parts, and the two limiting members are arranged at intervals. When the rotating disk rotates in the clockwise direction, the first limiting part is adapted to be abutted by one of the limiting members. When the rotating disk rotates in the counterclockwise direction, the first limiting part is adapted to be abutted by the other limiting member.

3. The rotation limiting structure of the safety seat as described in claim 1, characterized in that: The limiting member includes a base, a second limiting part, a first connecting part, and a second connecting part. The second limiting part, the first connecting part, and the second connecting part are respectively disposed on different sides of the base. The second limiting part protrudes relative to the base toward the rotating disk and is adapted to abut against the first limiting part. The first connecting part protrudes relative to the base toward the gear adjusting member and is connected to the gear adjusting member. The second connecting part protrudes relative to the base away from the rotating disk and is slidably connected to the base.

4. The rotation limiting structure of the safety seat as described in any one of claims 1-3, characterized in that: The first limiting part is a limiting protrusion.

5. The rotation limiting structure of the safety seat as described in claim 4, characterized in that: An elastic element is provided between the limiting member and the base. The elastic element is adapted to support the limiting member in the first position. One side of the limiting member is provided with an abutting surface, which is adapted to abut against the limiting protrusion to stop the rotating disk from rotating. The other opposite side of the limiting member is provided with a guide slope, which is adapted to abut against the guide slope, forcing the limiting member to leave the first position to avoid the limiting protrusion.

6. The rotation limiting structure of the safety seat as described in claim 4, characterized in that: The limiting protrusion is a long strip-shaped structure extending along an arc, the center of which is located on the rotation axis of the rotating disk. When the rotating disk rotates relative to the base to the left and right sides facing the base, the end faces of the two ends of the limiting protrusion in the length direction are adapted to abut against the limiting member.

7. The rotation limiting structure of the safety seat as described in any one of claims 1-3, characterized in that: The gear adjustment component is a pull rod, which is slidably connected to the base and includes a hand-held part and a linkage part connected to each other. The hand-held part is at least partially exposed outside the base, and the linkage part is disposed inside the base. The linkage part is provided with a limiting inclined surface suitable for abutting against the limiting member. When the pull rod slides, the limiting member rises and falls along the limiting inclined surface.

8. The rotation limiting structure of the safety seat as described in claim 7, characterized in that: The linkage part further includes a first limiting plane and a second limiting plane disposed at both ends of the limiting inclined surface. The first limiting plane is adapted to lock the limiting member in the first position, and the second limiting plane is adapted to lock the limiting member in the second position.

9. The rotation limiting structure of the safety seat as described in claim 1, characterized in that: The base includes a detachably connected upper cover and a lower cover, and an installation cavity is formed between the upper cover and the lower cover to accommodate the rotating disc, the limiting member, and the gear adjustment member. The upper cover is also provided with a gear indicator window, and the gear adjustment member is slidably connected to the base and partially exposed in the gear indicator window to indicate the current gear of the limiting member.

10. A child safety seat, characterized in that: The rotation limiting structure as described in any one of claims 1-9 is applied.

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