Child safety seat and base thereof

Abstract

The utility model relates to a child safety seat and a base thereof. The base comprises a fixing frame, a connecting frame, a clamping assembly and a buffering structure, wherein the connecting frame is arranged on the fixing frame in a sliding mode in the front-back direction and can be fixedly connected with an automobile seat. The clamping assembly comprises a clamping piece and a matching structure, the clamping piece is movably arranged on the connecting frame and moves front and back along with the connecting frame, the matching structure is arranged on the fixing frame, when the clamping piece is matched with the matching structure, the fixing frame is prevented from sliding forwards relative to the connecting frame, and when the fixing frame moves backwards, the clamping piece is separated from the matching structure; the fixing frame can slide relative to the connecting frame; the buffering structure is arranged on the fixing frame and located on the front side of the matching structure, when the fixing frame and the connecting frame relatively slide under the impact effect of external force, the clamping piece can move to the position where the buffering structure is located, the clamping piece and the buffering structure are matched to provide child buffering, and the safety performance of the safety seat is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to children's articles field, specifically designs a child safety seat and base thereof. BACKGROUND

[0002] Most of the existing child safety seats, the base is fixedly connected with the car seat, for example, fixed on the car through the ISOFIX device on the base, the ISOFIX device usually includes the fixed frame fixedly connected with the base and the connecting frame for connecting with the car seat, the fixed frame and the connecting frame are slidably telescopic to adjust the relative position of the two after installing the safety seat on the car seat.ISOFIX device itself is a rigid connection device, after the safety seat is fixedly connected with the car seat through the ISOFIX device and the position adjustment is completed, the fixed frame and the connecting frame are locked with each other, and the safety seat and the car seat are locked with each other, if the car has an accident or emergency brake, the safety seat installed through the ISOFIX device will directly bear the impact force, even if the safety seat is provided with a series of energy-absorbing components, but under the strong impact force, the child on the safety seat still has a security risk. SUMMARY

[0003] The utility model aims at providing a new base of child safety seat.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of a base of child safety seat for installing and fixing seat, the base includes:

[0005] Fixed frame;

[0006] Connecting frame, slidingly arranged on the fixed frame along the front and back directions, the connecting frame has a mounting part for fixing and connecting the fixed frame to the car seat;

[0007] Clamping assembly, including clamping piece and matching structure, wherein the clamping piece is movably arranged on the connecting frame and moves forward and backward with the connecting frame, the matching structure is arranged on the fixed frame and has multiple groups arranged along the length direction of the fixed frame, the clamping piece and the matching structure are matched to prevent the fixed frame from sliding forward relative to the connecting frame, and when the fixed frame moves backward, the clamping piece is driven by the fixed frame to move to the position away from the matching structure, so that the fixed frame and the connecting frame slide relative to each other;

[0008] A buffer structure is arranged on the fixed frame and located in front of the matching structure in the front-rear direction, and when the fixed frame slides relative to the connecting frame under the impact of external force, the clamping member is moved to the position of the buffer structure and can slide along the buffer structure; the buffer structure is further provided with a blocking part that abuts against the clamping member to limit the forward sliding of the fixed frame relative to the connecting frame.

[0009] In some embodiments, when the fixed frame slides forward relative to the connecting frame, the fixed frame is elongated relative to the connecting frame and moves away from the car seat; when the fixed frame slides backward relative to the connecting frame, the fixed frame is shortened relative to the connecting frame and moves toward the car seat.

[0010] In some embodiments, the buffer structure is a sliding groove arranged on the fixed frame, and the clamping member has a clamping part that is slidingly fitted in the sliding groove.

[0011] In some embodiments, the length of the sliding groove is 15-20 mm.

[0012] In some embodiments, the clamping part has a blocking surface that faces the car seat to prevent the forward movement of the fixed frame relative to the connecting frame when the rear side groove wall of the sliding groove abuts against the blocking surface, wherein the rear side groove wall of the sliding groove constitutes the blocking part.

[0013] In some embodiments, the clamping assembly further comprises a limiting member that is arranged on the movement path of the forward movement of the clamping member to prevent the forward movement of the clamping member.

[0014] In some embodiments, the buffer structure has one set or multiple sets that are arranged at intervals along the length direction of the fixed frame, and all the buffer structures are located in front of the matching structure.

[0015] In some embodiments, the fixed frame has a sliding cavity that extends in the length direction, and at least the front part of the connecting frame is slidingly fitted in the sliding cavity; the clamping member has a clamping part that cooperates with the matching structure or the buffer structure; the clamping assembly further comprises a limiting member that is arranged on the movement path of the forward movement of the clamping member to prevent the forward movement of the fixed frame relative to the connecting frame when the clamping member cooperates with the matching structure or the buffer structure; the clamping assembly further comprises a resilient member that is connected to the clamping member to provide a force that drives the clamping member to move forward and close to the limiting member.

[0016] In some embodiments, the engaging member is rotatably arranged on the connecting frame about a rotation center line, the engaging member further has a limiting end portion, the limiting member is arranged on a movement path of the limiting end portion, the limiting end portion and the engaging portion are distributed on a circumference with the rotation center line as a center, and the elastic member is a spring arranged between the connecting frame and the limiting end portion.

[0017] In some embodiments, the fitting structure is a clamping groove, and when the engaging member and the fitting structure are matched with each other, the engaging portion is matched and arranged in the clamping groove.

[0018] In some embodiments, the engaging portion has a front-facing inclined surface, and when the connecting frame slides forward relative to the fixed frame, the inclined surface is matched with the fitting structure to make the engaging portion disengage from the fitting structure.

[0019] Another object of the present application is to provide a child safety seat.

[0020] To achieve the above object, the present application adopts the technical scheme of a child safety seat, which comprises the above-mentioned base and a seat fixedly installed on the base, and the seat has at least a reverse use state in which it is arranged on the base towards the automobile seat.

[0021] Due to the use of the above technical scheme, the child safety seat of the present application has the following advantages: the base of the child safety seat of the present application is provided with a buffering structure, and the engaging member can slide relative to the buffering structure, so that after the base is fixed on the automobile seat, when the engaging member is matched with the buffering structure, the connecting frame can slide relative to the fixed frame, and then the seat can slide relative to the automobile seat, thus providing a buffering section for the seat to slide relative to the automobile seat, thereby providing buffering for the child sitting on the seat and reducing the risk of injury to the child. For example, when an accident such as a rear-end collision of the automobile occurs, the seat will have a tendency to move backward first and then move forward, and under the action of the impact force, the fixed frame can slide backward relative to the connecting frame first and make the engaging member change from being matched with the fitting structure to being matched with the buffering structure, and the relative movement can provide buffering for the child on the seat and reduce the impact on the child. When the seat changes to the tendency of moving forward, the buffering structure allows the engaging member to slide, thereby allowing the seat to slide forward relative to the automobile seat by a distance, providing buffering for the child, and this buffering distance can well reduce the safety risk of the child on the seat. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the present application, the drawings used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0023] Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 1 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application.

[0024] Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 2 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 1 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application.

[0025] Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 3 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 2 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application.

[0026] Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 4 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 1 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application.

[0027] Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 5 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 2 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application.

[0028] Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 6 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 5 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application.

[0029] Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 7 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 5 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application.

[0030] Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 8 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 7 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application.

[0031] Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 9 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application. Figure 7 Figure 1 is a schematic view of a child safety seat and a car seat according to an embodiment of the present application.

[0032] In the above drawings: 100, child safety seat; 101, base; 102, seat; 103, support leg; 200, car seat; 1, fixing frame; 10, sliding cavity; 11, matching structure; 12, buffer structure; 121, blocking part; 2, connecting frame; 21, mounting part; 3, clamping piece; 30, rotating shaft; 31, clamping part; 311, blocking surface; 312, inclined surface; 32, limiting end; 4, limiting piece; 5, elastic piece; 6, blocking piece. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present application will be described in detail below with reference to the drawings. It should be noted that the description of the embodiments is only intended to help understanding the present application and simplify the description, and is not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.

[0034] In this article, the terms "front", "back" and the like indicate the orientation or position relationship defined based on the orientation observed when the user sits on the seat of the car. For details, please refer to Figure 1 As shown, only for the convenience of describing the present application and simplifying the description, it is not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.

[0035] Referring to Figure 1 As shown, a child safety seat 100 includes a base 101 and a seat 102 arranged on the base 101. The base 101 of the child safety seat 100 is provided with a connecting device, by which the base 101 of the safety seat can be fixed on the seat 200 of the car, thereby realizing the connection between the child safety seat 100 and the seat 200 of the car. In this embodiment, the seat 102 is rotatably arranged on the base 101, and by rotating the seat 102, its orientation can be adjusted, thereby adjusting the use state of the child safety seat 100. Specifically, the seat 102 has at least a reverse use state arranged on the base 101 facing the seat 200 of the car. The seat 102 in the reverse use state is suitable for younger infants. When an accident occurs or the car brakes suddenly, especially when a frontal collision occurs, the infant will impact forward, and the seat 102 in the reverse use state can disperse the impact force of the infant thereon through the backrest and provide support for the head and neck to reduce the risk of injury to the infant's cervical spine. In this embodiment, the seat 102 also has a forward use state arranged on the base 101 facing away from the seat 200 of the car. Older children are suitable for the seat 102 in the forward use state. When the seat 102 is in the forward use state, the child sitting on the seat 102 faces the direction of the car driving. When a frontal collision occurs, the seat 102 can provide protection for the child through the buffer mechanism such as the safety belt thereon.

[0036] In the embodiment, the connecting device of the base 101 comprises a fixed frame 1 and a connecting frame 2, wherein the fixed frame 1 is fixedly connected with the base 101, and the connecting frame 2 is used to be fixedly connected with the automobile seat 200. Specifically, the connecting frame 2 is slidingly arranged on the fixed frame 1 in the front-rear direction, and the connecting frame 2 has a mounting portion 21 for fixedly connecting the fixed frame 1 with the automobile seat 200. When the child safety seat 100 is installed, after the connecting frame 2 is fixedly connected with the automobile seat 200, the distance between the safety seat and the automobile seat 200 or the position of the safety seat relative to the automobile seat 200 can be adjusted by driving the fixed frame 1 to slide relative to the connecting frame 2. In the embodiment, the mounting portion 21 of the connecting frame 2 can be connected with and locked by the anchoring mechanism on the automobile seat 200, and specifically, the mounting portion 21 of the connecting frame 2 can be fixedly connected with the ISOFIX interface of the automobile seat 200.

[0037] In the embodiment, the connecting device further comprises a clamping assembly and a buffer structure 12, wherein the clamping assembly comprises a clamping piece 3 and a matching structure 11 that cooperate with each other, the clamping piece 3 is movably arranged on the connecting frame 2 and moves forward and backward with the connecting frame 2, and the matching structure 11 is arranged on the fixed frame 1 and has a plurality of groups arranged at intervals along the length direction of the fixed frame 1. When the clamping piece 3 and the matching structure 11 cooperate with each other, the fixed frame 1 is prevented from sliding forward relative to the connecting frame 2. After the relative position between the safety seat and the automobile seat 200 is adjusted, the safety seat and the automobile seat 200 can be locked in the forward direction by the cooperation between the clamping piece 3 and the matching structure 11, so that the safety seat 102 can be prevented from rushing forward by the clamping piece 3 and the matching structure 11 when the automobile collides, thereby protecting the child.

[0038] In the embodiment, the buffer structure 12 is arranged on the fixed frame 1, and the buffer structure 12 is located on the front side of the matching structure 11 in the front-rear direction. In the embodiment, when the fixed frame 1 moves backward, the clamping piece 3 is driven by the fixed frame 1 to move to a position away from the matching structure 11, so that the fixed frame 1 slides relative to the connecting frame 2. Thus, under the action of external force, the fixed frame 1 and the connecting frame 2 slide relative to each other and the clamping piece 3 can move to the position of the buffer structure 12 and slide along the buffer structure 12. Specifically, when the impact force of the fixed frame 1 reaches a preset value, the fixed frame 1 slides backward relative to the connecting frame 2, and the clamping piece 3 is switched from cooperating with the matching structure 11 to cooperating with the buffer structure 12 to provide a buffer force for the fixed frame 1. By the sliding of the clamping piece 3 and the buffer structure 12, the seat 102 can slide relative to the automobile seat 200, and the child on the seat 102 can be buffered for a certain distance to reduce the impact on the child on the seat 102.

[0039] In the embodiment, the buffering structure 12 is further provided with a blocking portion 121 abutting against the engaging member 3 to limit the forward sliding of the fixed frame 1 relative to the connecting frame 2. After the seat 102 moves forward relative to the automobile seat 200 by a certain distance, the seat 102 is finally stopped from moving forward under the cooperation of the engaging member 3 and the blocking portion 121, thereby avoiding the safety seat 102 from rushing forward.

[0040] In the embodiment, the fixed frame 1 and the connecting frame 2 are arranged to slide relative to each other in the front-rear direction. When the fixed frame 1 slides forward relative to the connecting frame 2, the fixed frame 1 is elongated relative to the connecting frame 2 and moves away from the automobile seat 200. When the fixed frame 1 slides backward relative to the connecting frame 2, the fixed frame 1 is shortened relative to the connecting frame 2 and moves toward the automobile seat 200. Therefore, when the seat 102 and the base 101 move backward relative to the automobile seat 200 due to a rear-end collision of the automobile or other reasons, the fixed frame 1 slides backward relative to the connecting frame 2, and the engaging member 3 is switched to cooperate with the buffering structure 12.

[0041] In some embodiments, the buffering structure 12 has one group, and the buffering structure 12 is located in front of the cooperating structure 11. In other embodiments, the buffering structure 12 has multiple groups arranged at intervals along the length direction of the fixed frame 1, and all the buffering structures 12 are located in front of the cooperating structure 11. When the fixed frame 1 moves backward relative to the connecting frame 2, the engaging member 3 moves forward relative to the fixed frame 1 along with the connecting frame 2, thereby disengaging from the cooperating structure 11 and switching to cooperate with the buffering structure 12.

[0042] In the embodiment, the engaging member 3 cooperates with the cooperating structure 11 or the buffering structure 12. Specifically, the engaging member 3 has an engaging portion 31 cooperating with the cooperating structure 11 or the buffering structure 12. Referring to Figs. 1 and 2, the cooperating structure 11 is a clamping groove, and the engaging portion 31 is inserted in the clamping groove in cooperation. The buffering structure 12 is a sliding groove opened on the fixed frame 1, and the engaging portion 31 is inserted in the sliding groove in sliding cooperation. In the embodiment, referring to Fig. 3, the fixed frame 1 is provided with multiple clamping grooves at intervals, and a sliding groove is arranged between any two adjacent clamping grooves. The sliding groove extends in the front-rear direction, and the engaging portion 31 can slide in the sliding groove in the front-rear direction. The length of the sliding groove is greater than the length of the clamping groove. Figure 4 Figure 9 Figure 4

[0043] In the embodiment, when the fixed frame 1 moves forward relative to the connecting frame 2, the engaging member 3 can cooperate with the cooperating structure 11 to stop the movement of the fixed frame 1, and the engaging member 3 can also cooperate with the buffering structure 12 to stop the movement of the fixed frame 1. Specifically, referring to Figs. 1 and 2, when the fixed frame 1 moves forward relative to the connecting frame 2, the engaging portion 31 of the engaging member 3 is inserted in the clamping groove of the cooperating structure 11 in cooperation, thereby stopping the movement of the fixed frame 1. When the fixed frame 1 moves backward relative to the connecting frame 2, the engaging portion 31 of the engaging member 3 is inserted in the sliding groove of the buffering structure 12 in cooperation, thereby stopping the movement of the fixed frame 1. Figure 8 ​​​As shown, in this embodiment, the rear side groove wall of the sliding groove constitutes the above-mentioned blocking part 121, the engaging part 31 has a blocking surface 311 facing the car seat 200, and when the rear side groove wall of the sliding groove abuts against the blocking surface 311, the fixed frame 1 is prevented from moving forward relative to the connecting frame 2.

[0044] When the car is rear-ended, the safety seat will first have a tendency to move backward, as shown in Figure 1 、 Figure 2 As shown, when the seat 102 is in the reverse use state, the base 101 of the safety seat abuts against the backrest of the car seat 200, and in this state, the contact area between the safety seat and the car seat 200 is small, and the backrest of the car seat 200 is flexible. As shown in Figure 5 When rear-ended, the safety seat and the car seat 200 will collapse at the moment of impact, so that the base 101 sinks into the backrest of the car seat 200, and the seat 102 moves backward relative to the car seat 200. During this process, since the engaging assembly does not limit the backward movement of the fixed frame 1 relative to the connecting frame 2, a large impact force will not be directly generated due to the mutual locking of the fixed frame 1 and the connecting frame 2 at the moment of rear-ending, and the impact force is directly transmitted to the child in the seat 102. Since the fixed frame 1 can slide backward relative to the connecting frame 2, it also plays a buffering role, reducing the impact force borne by the child.

[0045] After moving backward for a distance, the safety seat will have a tendency to move forward relative to the car seat 200, and during this process, the child on the seat 102 will suddenly change from a backward movement to a forward movement, and the child's body will generate a large pressure. Especially when the seat 102 is in the reverse use state, after the seat 102 suddenly changes to a forward movement, if there is no buffering, the infant will immediately hit the backrest of the seat 102, and the infant will bear a large reaction force, with a great safety risk. In this embodiment, during the backward movement, the engaging part 31 can be detached from the clamping groove and enter the sliding groove, and when the safety seat changes to a forward movement, the engaging part 31 will first slide along the sliding groove, i.e., the connecting frame 2 can slide relative to the fixed frame 1, and the seat 102 and the base 101 can slide forward relative to the car seat 200, thereby providing a buffering distance for the seat 102 and the child thereon, effectively reducing the impact force borne by the child and reducing the risk. At the same time, during the backward movement, the space between the seat 102 and the car seat 200 is compressed, and by sliding the engaging part 3 in the sliding groove, the seat 102 can move forward for a distance, thereby releasing a certain space.

[0046] If the buffering structure 12 is not arranged on the fixed frame 1, during the backward movement of the seat 102 and the base 101, the engaging member 3 will enter one adjacent card slot from one card slot, and when the safety seat is converted into a forward movement trend, the engaging member 3 and the card slot are locked with each other, so that the fixed frame 1 cannot move relative to the connecting frame 2, without any buffering, the child is immediately impacted by a larger impact. At the same time, since the fixed frame 1 cannot move relative to the connecting frame 2, the space between the seat 102 and the backrest of the car seat 200 is greatly squeezed, which also affects the child located on the seat 102.

[0047] In some preferred embodiments, the length of the sliding slot is 15mm-20mm, which is sufficient to provide a better buffering effect.

[0048] In the embodiment, the engaging member 3 has a locked state and an unlocked state, when in the unlocked state, the engaging member 3 can be separated from the cooperation with the cooperation structure 11 or separated from the cooperation with the buffering structure 12, and the connecting frame 2 and the fixed frame 1 can slide relative to each other. When the engaging member 3 is in the locked state, the engaging member 3 can cooperate with the cooperation structure 11 or the buffering structure 12 to prevent the fixed frame 1 from moving forward relative to the connecting frame 2. In the embodiment, when the fixed frame 1 moves backward relative to the connecting frame 2, the engaging member 3 can automatically convert from the locked state to the unlocked state.

[0049] In the embodiment, referring to Figure 3 , the engaging member 3 is rotatably arranged on the connecting frame 2 about a rotation center line, and the rotation of the engaging member 3 about the rotation center line can convert the engaging member 3 between the locked state and the unlocked state. Specifically, referring to Figure 3 , the engaging member 3 is rotatably arranged on the connecting frame 2 about a rotation shaft 30, and the axis of the rotation shaft 30 extends in line with the rotation center line. In the embodiment, driving the engaging member 3 to rotate backward can convert the engaging member 3 from the locked state to the unlocked state, so that the engaging portion 31 can be separated from the card slot, and the connecting frame 2 can slide forward relative to the fixed frame 1.

[0050] Referring to Figure 3 , Figure 6 , in the embodiment, the engaging portion 31 has a forwardly arranged inclined surface 312, and when the inclined surface 312 cooperates with the cooperation structure 11 during the forward sliding of the connecting frame 2 relative to the fixed frame 1, the engaging portion 31 is separated from the cooperation structure 11. Specifically, the inclined surface 312 extends upwardly from front to back, and during the forward sliding of the connecting frame 2 relative to the fixed frame 1, the front side slot wall of the card slot cooperates with the inclined surface 312 to slide, the front side slot wall of the card slot drives the engaging member 3 to rotate backward to convert to the unlocked state, and the engaging portion 31 is separated from the card slot.

[0051] In the embodiment, the engaging assembly comprises a limiting member 4, which is arranged on the movement path of the engaging member 3 moving forward, specifically, the limiting member 4 is arranged on the path of the engaging member 3 rotating forward. When the fixing frame 1 moves forward relative to the connecting frame 2, the groove wall of the clamping groove or the blocking part 121 abuts against the blocking surface 311 of the engaging part 31, the groove wall or the blocking part 121 drives the engaging member 3 to rotate forward, but the engaging member 3 cannot rotate forward under the action of the limiting member 4, so that the engaging part 31 cannot be separated from the clamping groove or the sliding groove, thereby preventing the fixing frame 1 from moving forward.

[0052] In the embodiment, the engaging assembly further comprises an elastic member 5, which is connected with the engaging member 3 to provide the required force for the engaging member 3 to rotate forward and approach the limiting member 4. Under the action of the elastic member 5, the engaging member 3 can maintain the state of abutting against the limiting member 4 when no external force is applied, so as to improve the stability of the connecting device. Meanwhile, the engaging member 3 can automatically convert from the unlocked state to the locked state under the action of the elastic member 5.

[0053] In the embodiment, the engaging member 3 further has a limiting end part 32, which is distributed on the circumference with the rotation center line as the rotation center together with the engaging part 31. The limiting member 4 is arranged on the movement path of the limiting end part 32, and the limiting end part 32 is used to cooperate with the limiting member 4. When the limiting end part 32 abuts against the limiting member 4, the engaging member 3 cannot rotate forward. In the embodiment, the elastic member 5 is a spring arranged between the connecting frame 2 and the limiting end part 32.

[0054] In the embodiment, the engaging assembly further comprises a blocking member 6, as shown in Figure 3 The blocking member 6 is located on the path of the engaging member 3 rotating backward, and the blocking member 6 plays a role in limiting the angle of the engaging member 3 rotating backward, so as to prevent the engaging member 3 from rotating backward beyond the range. After the engaging member 3 rotates backward and converts to the unlocked state, the engaging part 31 is separated from the clamping groove or the sliding groove, at this time, the engaging member 3 abuts against the blocking member 6 and maintains in the unlocked state. Specifically, as shown in Figure 3 The rear part of the engaging member 3 is provided with a limiting groove concave inwardly to the rotation center line, the groove wall of the limiting groove has a certain arc to cooperate with the rotation of the engaging member 3, and the blocking member 6 can abut against the limiting groove when the engaging member 3 converts to the unlocked state.

[0055] In the embodiment, the fixed frame 1 has a sliding cavity 10 extending along the length direction, and the at least front part of the connecting frame 2 is slidingly inserted into the sliding cavity 10, and the clamping groove and the sliding groove are both formed on the cavity wall of the sliding cavity 10. The connecting frame 2 has a hollow cavity, and the clamping piece 3 is arranged in the hollow cavity, one side of the hollow cavity is provided with an opening, and the clamping part 31 can extend out of the hollow cavity from the opening and extend into the clamping groove or the sliding groove. When the clamping piece 3 is in the locked state, the clamping part 31 extends out of the hollow cavity, and when the clamping piece 3 is in the unlocked state, the clamping piece 3 is accommodated in the hollow cavity.

[0056] In the embodiment, the child safety seat 100 further comprises a support leg 103 arranged on the front side of the base 101, and the support leg 103 is arranged in a telescopic manner. After the child safety seat 100 is fixed on the automobile seat 200, the support leg 103 can be adjusted to support the automobile compartment support surface, thereby preventing the safety seat from overturning and ensuring the safety of the child.

[0057] In summary, the child safety seat 100 of the embodiment can slide backward relative to the connecting frame 2 and make the clamping piece 3 disengage from the clamping groove and be inserted into the sliding groove under the action of the impact force when the safety seat tends to move backward first and then forward when the automobile is involved in a rear-end collision or the like. When the safety seat tends to move forward, the clamping piece 3 slides backward in the sliding groove, thereby allowing the seat 102 and the base 101 to slide forward relative to the automobile seat 200 by a distance, providing a buffer for the child on the seat 102 and avoiding the child from directly bearing the impact. The distance of the buffer can well reduce the safety risk of the child on the seat.

[0058] Unless specifically defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. If there is a conflict between the definitions used in this document and the definitions in other documents, the definitions used in this document shall control.

[0059] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A base for a child safety seat, used for mounting and fixing the seat, characterized in that: The base includes: Fixture; A connecting frame is slidably disposed on the fixed frame in a front-rear direction, and the connecting frame has a mounting part for fixing the fixed frame to the car seat; A locking assembly includes a locking member and a locking structure that cooperate with each other. The locking member is movably disposed on the connecting frame and moves back and forth with the connecting frame. The locking structure is disposed on the fixed frame and has multiple sets spaced apart along the length of the fixed frame. When the locking member and the locking structure cooperate with each other, the fixed frame prevents the fixed frame from sliding forward relative to the connecting frame. When the fixed frame moves backward, the fixed frame drives the locking member to move toward a position where it is disengaged from the locking structure, so that the fixed frame and the connecting frame slide relative to each other. A buffer structure is provided on the fixed frame and located in front of the mating structure in the front-back direction. When the fixed frame and the connecting frame slide relative to each other under the impact of an external force, the engaging member can move to the position of the buffer structure and slide along the buffer structure. The buffer structure is also provided with a blocking part that abuts against the engaging member to limit the forward sliding of the fixed frame relative to the connecting frame.

2. The base of the child safety seat according to claim 1, characterized in that: When the fixing frame slides forward relative to the connecting frame, the fixing frame extends relative to the connecting frame and moves away from the car seat; when the fixing frame slides backward relative to the connecting frame, the fixing frame shortens relative to the connecting frame and moves toward the car seat.

3. The base of the child safety seat according to claim 1, characterized in that: The buffer structure is a slide groove formed on the fixed frame, and the engaging member has an engaging part that can be slidably inserted into the slide groove.

4. The base of the child safety seat according to claim 3, characterized in that: The length of the groove is 15mm to 20mm.

5. The base of the child safety seat according to claim 3, characterized in that: The engaging portion has a blocking surface facing the vehicle seat to prevent the fixing bracket from moving forward relative to the connecting bracket when it abuts against the rear side wall of the slide groove, wherein the rear side wall of the slide groove constitutes the blocking portion.

6. The base of the child safety seat according to claim 5, characterized in that: The engaging assembly also includes a limiting member, which blocks the forward movement path of the engaging assembly to prevent it from moving forward.

7. The base of the child safety seat according to any one of claims 1 to 6, characterized in that: The buffer structure has one set or multiple sets spaced apart along the length of the fixing frame, and all the buffer structures are located in front of the mating structure.

8. The base of the child safety seat according to claim 1, characterized in that: The fixing frame has a sliding cavity extending along the length direction, and at least the front part of the connecting frame is slidably inserted into the sliding cavity; The engaging component has an engaging portion that engages with the mating structure or the buffer structure. The engaging assembly also includes a limiting component that blocks the forward movement path of the engaging component, thereby preventing the fixing frame from moving forward relative to the connecting frame when the engaging component engages with the mating structure or the buffer structure. The engaging assembly further includes an elastic element connected to the engaging member to provide a force that moves the engaging member forward and toward the limiting member.

9. The base of the child safety seat according to claim 8, characterized in that: The engaging member is rotatably mounted on the connecting frame around the rotation center line. The engaging member also has a limiting end, which blocks the movement path of the limiting end. The limiting end and the engaging part are distributed at intervals on a circumference with the rotation center line as the rotation center. The elastic member is a spring disposed between the connecting frame and the limiting end. And / or, the mating structure is a slot; when the engaging member and the mating structure are engaged, the engaging part is inserted into the slot. And / or, the engaging portion has a forward-facing inclined surface, and during the forward sliding of the connecting frame relative to the fixing frame, the inclined surface engages with the mating structure, causing the engaging portion to disengage from the mating structure.

10. A child safety seat, characterized in that: Includes a base as described in any one of claims 1 to 9, and a seat mounted and fixed on the base, the seat having at least a reverse use position disposed on the base facing the vehicle seat.

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