BASE, HOLDING MECHANISM, CROCH BELT BUCKLE RECEIVING DEVICE, AND CHILD SEAT

Abstract

The present disclosure provides a base, the base including a housing, a base bracket, and an anchor assembly, the base bracket is accommodated in the housing, the anchor assembly is telescopically and rotatably connected to the base bracket, and at least a portion of the anchor assembly extends from the housing. The retaining mechanism allows the headrest to tilt forward when subjected to an external force impact. The crotch belt buckle receiving device is disposed on a seat portion of a seat body of the child seat. The child seat includes a seat body and a headrest. The base and child seat provided by the present disclosure are safe and convenient to operate.

Description

[Technical field]

[0001] The present disclosure relates to the technical field of child seats, and more particularly to a base, a retaining mechanism, a crotch belt buckle receiving device, and a child seat. [Background technology]

[0002] A child car seat is a device designed for children who are restrained in a child car seat during travel. In the event of a collision or sudden deceleration, it can reduce the impact on the child and limit the child's body movement, thereby reducing the injury to the child and effectively improving the safety of the child on board.

[0003] Typically, when a child is seated inside a vehicle, the vehicle seat is fitted with a child seat to provide safety protection for the child while riding in the vehicle.

[0004] The ISOFIX (International Standards Organization FIX) connections of existing child seats are fixed, i.e. connected to the seat and a rigid body. When a child sits in the child seat, the child usually pushes the child seat down according to his or her own weight.

[0005] Some existing child car seats have a harness mode (for younger children) and a booster mode (for older children). In the harness mode, the child is restrained via a three- or five-way fastener provided by the child car seat itself, while in the booster mode, the child is restrained via the vehicle's seat belt by appropriately adjusting the height of the child car seat's head restraint. Summary of the Invention

[0006] In one aspect, the present disclosure provides a base for a child safety seat, the base including a housing, a base bracket, and an anchor assembly, the base bracket housed within the housing, the anchor assembly telescopically and rotatably connected to the base bracket and extending at least partially from the housing.

[0007] In another aspect, the present disclosure provides a base, the base including a housing, a base bracket, and an anchor assembly, the housing enclosing a space, the base bracket being disposed in the space and forming a first slide groove, and the anchor assembly having a pivot shaft positioned in the first slide groove and forming a pivot point.

[0008] One aspect of the present disclosure provides a seat, the seat including a seat body, a headrest, and a retaining mechanism, the seat body including a backrest portion, the backrest portion including a backrest plate, the headrest provided on an upper portion of the seat body, the headrest bracket and a headrest body provided on the headrest bracket, the headrest bracket being connected to the backrest plate, and the retaining mechanism tilting the headrest forward when the headrest receives an external force impact.

[0009] Another aspect of the present disclosure provides a retention mechanism, the retention mechanism being attached to a seat and capable of tilting a headrest of the seat forward when the seat is subjected to an impact of an external force, the retention mechanism including a pivot shaft, a fixed seat, a limit rod, and a limit chute, the pivot shaft penetrating a lower end of the backrest plate of the seat and respectively connected to pivot holes on both sides of a seat body of the seat, the fixed seat being fixed to a rear surface of the backrest plate and having a perforation, the limit rod penetrating the seat body and the perforation of the fixed seat and connected to the backrest plate, the headrest, and the seat body, the limit chute being provided in the seat body, and the limit rod sliding within the limit chute.

[0010] Another aspect of the present disclosure provides a seat, the seat including a seat body, a headrest, and a retaining mechanism, the seat body including a backrest portion, the backrest portion including a backrest plate, the headrest being provided on an upper portion of the seat body and including a headrest bracket and a headrest body provided on the headrest bracket, the retaining mechanism being the same as described above.

[0011] The present disclosure also provides a crotch belt buckle receiving device, the crotch belt buckle receiving device being provided on a seat portion of a seat body of a child seat, the crotch belt buckle receiving device including a receiving slot and a trigger, the receiving slot being used for receiving a crotch belt buckle, the trigger being provided within the receiving slot and being movable between an extended position and a retracted position relative to an inner wall of the receiving slot, the trigger being connected to a limiting device via a link, whereby, when the crotch belt buckle is received within the receiving slot, the trigger is in the retracted position and the limiting device limits a lower limit stroke of a headrest of the child seat relative to a backrest of the seat body, and when the crotch belt buckle is not received in the receiving slot, the trigger is in the extended position and the limiting device limits an upper limit stroke of the headrest relative to the backrest.

[0012] The present disclosure provides a child seat including a seat body and a headrest, and the crotch belt buckle receiving device is provided in the seat portion of the seat body. [Brief description of the drawings]

[0013] Various objects, features, and advantages of the present disclosure will become more apparent from the consideration of the following detailed description of preferred embodiments thereof in connection with the accompanying drawings, in which the drawings are merely illustrative views of the present disclosure and are not necessarily drawn to scale, in which the same reference numbers always refer to the same or similar parts.

[0014] [Figure 1] FIG. 2 is a side view of the child seat of the present disclosure with the anchor assembly in a horizontal and retracted position.

[0015] [Diagram 2] FIG. 2 is a side view of the child seat of the present disclosure with the anchor assembly in a horizontal and extended position.

[0016] [Diagram 3] FIG. 2 is a side view of the child seat of the present disclosure with the anchor assembly in a tilted and extended position.

[0017] [Figure 4] FIG. 2 is a perspective view of a base bracket of the present disclosure.

[0018] [Diagram 5] FIG. 5 is an enlarged view of area A in FIG.

[0019] [Figure 6] FIG. 5 is an enlarged view of region B in FIG.

[0020] [Figure 7] FIG. 2 is a perspective view of a press limit block of the present disclosure;

[0021] [Figure 8] FIG. 2 is another perspective view of the press limit block of the present disclosure.

[0022] [Figure 9] FIG. 2 is a perspective view of a base bracket of the present disclosure with the press limit block not shown and the anchor assembly in a horizontal and extended position;

[0023] [Figure 10] FIG. 2 is a perspective view of a base bracket of the present disclosure with the press limit block not shown and the anchor assembly in an inclined and extended position;

[0024] [Figure 11] FIG. 1 is a perspective view of a base bracket of the present disclosure with the anchor assembly locked.

[0025] [Figure 12] FIG. 1 is a perspective view of a base bracket of the present disclosure with the anchor assembly unlocked.

[0026] [Figure 13] FIG. 11 is a schematic front view showing a child seat according to another embodiment of the present disclosure.

[0027] [Figure 14] FIG. 11 is a schematic rear view showing a child seat according to another embodiment of the present disclosure.

[0028] [Figure 15] FIG. 13 is a schematic perspective view showing a retaining mechanism of a child seat in another embodiment of the present disclosure.

[0029] [Figure 16] FIG. 13 is a rear schematic view showing a headrest bracket of a child seat in another embodiment of the present disclosure.

[0030] [Figure 17] FIG. 11 is a schematic side view showing a headrest bracket of a child seat in another embodiment of the present disclosure.

[0031] [Figure 18] FIG. 11 is a schematic perspective view showing a forward tilting operation of a headrest of a child seat in another embodiment of the present disclosure.

[0032] [Figure 19] FIG. 11 is a schematic front view showing a child seat according to yet another embodiment of the present disclosure.

[0033] [Figure 20] FIG. 11 is a schematic rear view showing a child seat according to yet another embodiment of the present disclosure.

[0034] [Figure 21] FIG. 13 is a schematic diagram showing a retention mechanism in yet another embodiment of the present disclosure.

[0035] [Figure 22] FIG. 13 is a schematic diagram showing a retention mechanism in a first state in yet another embodiment of the present disclosure.

[0036] [Figure 23] FIG. 13 is a schematic diagram showing a retention mechanism in a second state in yet another embodiment of the present disclosure.

[0037] [Figure 24] 1 is a perspective view of a child car seat according to some embodiments of the present disclosure, in which a crotch belt buckle receiving device is located in a portion of the seat near the backrest.

[0038] [Diagram 25] A perspective view showing the crotch belt buckle of a child seat in some embodiments of the present disclosure being received in a receiving slot of a crotch belt buckle receiving device, with the receiving cover for covering the receiving slot removed to show the inside of the receiving slot.

[0039] [Figure 26] FIG. 2 is a schematic perspective view of a child car seat in some embodiments of the present disclosure with the receiving cover and crotch belt buckle removed to show the receiving slots.

[0040] [Figure 27] FIG. 26 is an enlarged view of a selected area A in FIG.

[0041] [Figure 28] FIG. 2 is a schematic diagram of the bottom side of a child car seat in some embodiments of the present disclosure.

[0042] [Figure 29] FIG. 29 is an enlarged view of selected area B of FIG. 28, specifically showing the triggers, links and restraint devices of the child safety seat in some embodiments of the present disclosure.

[0043] [Diagram 30] 1 is a schematic bottom view of a child car seat according to some embodiments of the present disclosure, showing a partially exploded view. FIG.

[0044] [Diagram 31] FIG. 31 is an enlarged view of selected area C in FIG. 30, specifically showing the trigger of the child car seat in some embodiments of the present disclosure.

[0045] [Diagram 32] 1 is a schematic bottom view of a child car seat according to some embodiments of the present disclosure, viewed from another angle. FIG.

[0046] [Diagram 33] FIG. 33 is an enlarged view of selected area D in FIG. 32, specifically illustrating a child seat restraint device in some embodiments of the present disclosure.

[0047] [Diagram 34] FIG. 2 is a schematic side view of a child seat in some embodiments of the present disclosure in a harness use mode.

[0048] [Diagram 35] FIG. 35 is an enlarged view of a selected area E in FIG. 34.

[0049] [Diagram 36] 1 is a schematic side view of a child car seat in some embodiments of the present disclosure in a booster use mode. FIG.

[0050] [Figure 37] FIG. 37 is an enlarged view of a selected area F in FIG. 36. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0051] To more clearly explain the overall concepts of the present disclosure, the following detailed description is given by way of example with reference to the drawings in the description.

[0052] It should be noted that in the following description, many specific details are set forth in order to fully understand the present disclosure. However, the present disclosure can be implemented in other ways different from the ways described herein. Therefore, the scope of protection of the present disclosure is not limited by the specific embodiments disclosed below.

[0053] Furthermore, in describing the present disclosure, the terms "center", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "upper", "lower", "inner", "outer", "axial", "radial", "circumferential", and the like, should be understood to mean an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for ease of description and simplicity of the present disclosure, and does not imply or imply that the devices or components shown must have a particular orientation, but must be constructed and operated under a particular orientation. It should not be construed as a limitation of the present disclosure.

[0054] In this disclosure, unless otherwise specified and limited, the terms "attached", "connected", "coupled" and "fixed" should be broadly understood, for example, may be fixed, detachable or integrated, or may be directly connected, indirectly connected through an intermediate medium, or may be in the internal communication of two components or the interaction between two components. However, a direct connection means that the bodies of the two connections do not establish a connection relationship through any transition structure, but only form a complete part through the connection structure. For those skilled in the art, the specific meanings of the above terms in this disclosure can be understood according to the specific situation.

[0055] In the present disclosure, unless otherwise specified and limited, a first feature "above" or "below" a second feature may be in direct contact between the first feature and the second feature, or indirect contact between the first feature and the first feature through an intermediate medium. In the description herein, a description referring to the terms "embodiments," "some embodiments" or "examples," "specific examples" or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present disclosure. In the present specification, general expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined as appropriate in any one or more embodiments or examples.

[0056] The present disclosure provides a child seat that can be attached to a vehicle seat, on which a baby or child can sit, ensuring passenger safety. The present disclosure also provides a base that is used as part of the child seat. In a "booster" use mode, the vehicle seat belt is used to pass through a guide on the harness of the child seat, and then pass through the child's chest to secure it to the vehicle seat, and in this use mode, a pulling force is applied to the headrest by the vehicle safety when the vehicle is impacted.

[0057] Fig. 1 is a side view of the child car seat 100 of the present disclosure with the anchor assembly 30 in a horizontal and contracted position. Fig. 2 is a side view of the child car seat 100 of the present disclosure with the anchor assembly 30 in a horizontal and extended position. Fig. 3 is a side view of the child car seat 100 of the present disclosure with the anchor assembly 30 in a tilted and extended position.

[0058] 1 to 3, a child seat 100 of the present disclosure includes a base 1 and a seat body 2 located above the base 1. The seat body 2 may be of various types, such as a seat suitable for a large child or a basket suitable for a small baby. The seat body 2 can slide and / or rotate with respect to the base 1 in order to adjust the posture of the seat body 2.

[0059] The base 1 includes a housing 10 and a base bracket 20. The housing 10 forms the exterior of the base 1. The housing 10 forms a cavity for closing the space within the housing 10. The base bracket 20 is accommodated in the space within the housing 10 to provide structural strength for the base 1. The base bracket 20 has an anchor assembly 30. The anchor assembly 30 is telescopically and rotatably connected to the base bracket 20 and extends at least partially from the housing 10. Specifically, the anchor assembly 30 extends rearward (i.e., to the right in Figs. 1 to 3) through the housing 10.

[0060] The bottom surface of the housing 10 is substantially flat. The anchor assembly 30 has a horizontal state (shown in FIGS. 1 and 2) and an inclined state (shown in FIG. 3). In the horizontal state, the anchor assembly 30 is parallel to the bottom surface of the housing 10. In the inclined state, the anchor assembly 30 forms an angle with the bottom surface of the housing 10. Alternatively, in the horizontal state, the anchor assembly 30 forms an angle with the bottom surface of the housing 10, and in the inclined state, the angle between the anchor assembly 30 and the bottom surface of the housing 10 is greater than the angle in the horizontal state.

[0061] The anchor assembly 30 has an extended position (shown in Figures 2 and 3) and a retracted position (shown in Table 1). The anchor assembly 30 extends further out of the housing 10 relative to the base 1 in the extended position than in the retracted position.

[0062] It should be noted that the horizontal and inclined states are independent of the extended and retracted positions, i.e., for example, the anchor assembly 30 may be in both the inclined and extended positions at the same time, and the inclined state can be achieved when the anchor assembly is in any position (e.g., the extended and retracted positions).

[0063] 4 is a perspective view of a base bracket 20 of the present disclosure, FIG. 5 is an enlarged view of region a in FIG. 4, and FIG. 6 is an enlarged view of region b in FIG.

[0064] 4-6, the base bracket 20 includes two sheets 201 that are symmetrical to each other. The base bracket connecting rod 250 is formed between the two sheets 201 to maintain a fixed distance between the two sheets 201. One or more base bracket connecting rods 250 may be provided. The base bracket 20 may have other structures, and the present disclosure is not limited thereto.

[0065] The base bracket 20 includes a first sliding groove 210, a sliding adjustment slot 230, a rotation limiting groove 240, a base bracket connecting rod 250, a connecting hole 260, and a limiting groove 280. When the base bracket 20 includes two sheets 201, each sheet 201 includes a first sliding groove 210, an adjusting sliding groove 230, a rotation limiting groove 240, a connecting hole 260, and a limiting groove 280.

[0066] The anchor assembly 30 includes a pivot shaft 310, a sliding portion 320, and a connecting portion 330. The pivot shaft 310 is located at one end of the sliding portion 320, and the connecting portion 330 is fixedly connected to the sliding portion 320. The anchor assembly 30 rotates as a whole about the pivot shaft 310. The connecting portion 330 is arranged to be anchored to a fixing rod of a vehicle seat to fix the child seat 100 to the vehicle seat. The connecting portion 330 may be an ISOFIX fixing element. Alternatively, the connecting portion 330 may be any other type of fixing element. The sliding portion 320 is fixedly connected to a reinforcing element 350 to increase the strength of the anchor assembly 30. The reinforcing element 350 is formed as a sheet and is made of iron. Alternatively, the reinforcing element 350 can be made of another material, such as steel or aluminum, and the present disclosure is not limited thereto. Other parts of the anchor assembly 30, such as the sliding portion 320, are made of plastic, and the plastic portion at least partially covers the reinforcing element 350. A portion of the reinforcing element 350 extends vertically upward to form a lug. "Vertically upward" may refer to a vertically upward direction as shown in Figures 1-3. Alternatively, the sliding portion 320 may not include the reinforcing element 350.

[0067] The first slide groove 210 is formed as a horizontally elongated groove. The pivot shaft 310 is slidably disposed in the first slide groove 210. In this manner, the pivot shaft 310 can be rotated in the first slide groove 210 and slid along the first slide groove 210.

[0068] The slide adjustment slot 230 is formed on the rear side of the first slide groove 210 on the seat 201 (the right side in Figs. 1 to 3), and is located at a higher position than the first slide groove 210. The slide adjustment slot 230 is formed in an inclined elongated shape or in an arc shape. A part of the seat main body 2 is located within the slide adjustment slot 230 so that the seat main body 2 can slide along the slide adjustment slot 230 relative to the base 1, and adjusts the position and / or angle of the seat main body 2 relative to the base 1.

[0069] The rotation limiting groove 240 is formed in the front-rear direction (i.e., the left-right direction in Figs. 1 to 3). The vertical width of the rotation limiting groove 240 gradually increases from the front to the rear, and the entire rotation limiting groove 24 is triangular. Alternatively, the entire rotation limiting groove 240 is trapezoidal, or the vertical width is kept constant. The press limiting block 40 is rotatably connected to the base bracket 20. The press limiting block 40 is provided on the opposite side of the base bracket 20 to the anchor assembly 30. For example, the press limiting block 40 is disposed between (i.e., on the inside) the two sheets 201 of the base bracket 20, and the two anchor assemblies 30 are disposed on the outside of the two sheets 201 of the base bracket 20. Both the press limiting block 40 and the anchor assembly 30 can abut against the base bracket 20. In order to maintain the synchronization of the movements of the two anchor assemblies 30, a connecting rod 370 is formed between the two anchor assemblies 30.

[0070] FIG. 7 is a perspective view of the press limit block 40 of the present disclosure, and FIG. 8 is another perspective view of the slide adjustment slot 40 of the present disclosure.

[0071] 7, 8 and 4-6, the press limiting block 40 includes a pivot hole 410, a second slide groove 420 and a restriction hole 430. The second slide groove 420 is formed in an elongated shape.

[0072] The pivot hole 410 is connected to the base bracket 20 by a pivot shaft (not shown) such that the press limit block 40 is configured to rotate about the pivot hole 410. The reset element 340 is connected to the base bracket 20 and the press limit block 40 and holds the reset force applied to the press limit block 40. The reset element 340 is a torsion spring or other element capable of providing a restoring force. In an embodiment in which the reset element 340 is a torsion spring, one arm of the torsion spring is connected to the connection hole 260 and the other arm of the torsion spring is connected to the press limit block 40, and the body of the torsion spring is sleeved on a pivot shaft that passes through the pivot hole 410.

[0073] The restricting hole 430 is connected to the limiting groove 280 of the base bracket 20 through a rivet, pin or screw, thereby allowing the limiting groove 28 to limit the rotation angle of the press limiting block 40 .

[0074] The anchor assembly 30 also includes a connecting rod 360. The connecting rod 360 extends perpendicularly from the reinforcing element 350 and passes through the second slide grooves 420 and the rotation-limiting grooves 240. In the embodiment shown in Fig. 4, each of the two anchor assemblies 30 has a connecting rod 360. In another embodiment (as shown in Figs. 9 and 10), the two anchor assemblies 30 share one connecting rod 360. That is, the connecting rod 360 connects the two reinforcing members 350 and passes through the two second slide grooves 420 and the two rotation-limiting grooves 240.

[0075] FIG. 9 is a perspective view of the base bracket 20 of the present disclosure, where the press limit block 40 is not shown, and the anchor assembly 30 is in a horizontal and extended position, and FIG. 10 is a perspective view of the base bracket 20 of the present disclosure, where the press limit block 40 is not shown, and the anchor assembly 30 is in an inclined and extended position.

[0076] 9, 10, and 4, the anchor assembly 30 is configured to rotate around the pivot shaft 310, so that when the child seat 100 is attached to the vehicle seat and a child sits in the child seat, the child seat 100 moves downward due to the child's gravity, and the anchor assembly 30 rotates counterclockwise around the pivot shaft 310 (see FIGS. 1 to 3). At the same time, the slide portion 320 drives the connecting rod 360 to move together, and then drives the press limit block 40 to rotate around the pivot hole 410 to resist the reset force of the reset element 340. When the connecting rod 360 moves upward to abut against the upper side of the rotation limit groove 240, the anchor assembly 30 cannot rotate further. This completes the change of the anchor assembly 30 from the horizontal state to the inclined state.

[0077] When the child leaves the child seat 100, the reset force of the reset element 340 causes the press limit block 40 to rotate clockwise around the pivot line of the pivot hole 410, and the second slide groove 420 causes the connecting rod 360 to rotate clockwise, and then causes the anchor assembly 30 to rotate clockwise around the pivot shaft 310. When the connecting rod 360 moves downward to abut against the lower side of the rotation limit groove 240, the anchor assembly 30 cannot rotate further. This causes the anchor assembly 30 to return from the inclined state to the horizontal state.

[0078] The anchor assembly 30 also includes a number of locking holes 351. The locking holes 351 are formed on the inside of the slide portion 320, specifically, for example, on the inside of the reinforcing element 350. Each slide portion 320 is provided with a series of spaced apart locking holes 351. The locking holes 351 may be circular or elongated.

[0079] 4, the base 1 further includes a telescopic adjustment assembly 50. The telescopic adjustment assembly 50 includes a telescopic adjustment handle 510, a linkage arm 520, and a lock pin 530. The telescopic adjustment handle 510 is connected to the lock pin 530 via the linkage arm 520, so that the movement of the telescopic adjustment handle 510 can disengage the lock pin 530 from the lock hole 351. When the child seat 100 is used, the lock pin 530 is inserted or engaged into one of the lock holes 351.

[0080] The telescoping adjustment handle 510 is at least partially exposed on the outside of the housing 10 . Specifically, the telescopic adjustment handle 510 extends from the bottom of the housing 10. The telescopic adjustment handle 510 is formed with a recess 511 (recessed upward into the housing 10 when viewed from the bottom) for manually operating the telescopic adjustment handle 510, for example, from the bottom of the housing 10. The recess 511 is recessed into the space formed by the housing 10.

[0081] The linkage arm 520 is formed in an "L" shape. The linkage arm 520 is rotatably disposed in the housing 10. The pivot shaft 521 of the linkage arm 520 is formed in a curved portion of the "L" shape. As an alternative embodiment, the pivot shaft 521 of the linkage arm 520 is formed at another position on the linkage arm 520, but the present disclosure is not limited thereto. In an embodiment in which the base bracket 20 includes two seats 201, the telescopic adjustment assembly 50 includes two linkage arms 520 and two lock pins 530. The two arms of the "L" shaped linkage arm 520 are perpendicular or at another angle to each other.

[0082] One end of the telescopic adjustment handle 510 away from the recess 511 is rotatably connected to one end of the linkage arm 520, and the other end of the linkage arm 520 is connected to the lock pin 530. A reset element (not shown) acts on the telescopic adjustment assembly 50 so that the lock pin 530 tends to move in a direction to be inserted into the lock hole 351 or to engage with the lock hole 351. The base bracket 20 is formed with a structure for guiding the movement of the lock pin 530 so that the lock pin 530 is accurately inserted into the lock hole 351. In an embodiment having two linkage arms 520 and two lock pins 530, the ends of the two linkage arms 520 are connected to the same position of the telescopic adjustment handle 510, so that the two linkage arms 520 move synchronously and the two lock pins 520 move synchronously.

[0083] In the base 20 of the present disclosure, the length that the anchor assembly 30 extends from the base 20 is adjustable, that is, the anchor assembly 30 is configured to be secured in an extended position, a retracted position, and any of a number of positions therebetween.

[0084] Specifically, when the telescopic adjustment handle 510 is pulled forward (left in FIGS. 1-3), the telescopic adjustment handle 510 rotates the linkage arm 520 about the pivot shaft, and the rotation of the linkage arm 520 disengages the locking pin 530 from the locking hole 351 (as shown in FIG. 12).

[0085] At this time, since the pivot shaft 310 can slide in the first slide groove 210, when the telescopic adjustment handle 510 is pulled, the anchor assembly 30 can perform translational motion so as to protrude the housing 10 from the housing 10 and pull it back. Since each of the rotation limiting groove 240 and the second slide groove 420 has a certain length along the front-rear direction of the child seat 100, i.e., each of the rotation limiting groove 250 and the second slide groove 420 has a length at least equal to or greater than the length of the first slide groove 210, the rotation limiting groove 240 and the press limiting block 40 do not prevent the anchor assembly 30 from moving to the extended position and the retracted position.

[0086] When the telescopic adjustment handle 510 is released, the restoring force of the reset element causes the linkage arm 520 to rotate about its axis of rotation in the opposite direction to that described above, driving the telescopic adjustment handle 510 to the inoperative position and inserting or engaging the locking pin 530 into the corresponding locking hole 351 (as shown in FIG. 11 ).

[0087] In the present disclosure, the sliding portion 320 has a certain length, and the pivot shaft 310 is located away from one end of the connecting portion 330, so that the pivot point is away from the anchor point of the connecting portion 130, and the force arm of the anchor assembly 30 is longer and can bear a larger force when impacted. The present disclosure provides a base and a child seat, which can avoid the problem that the child's head is easily hit against the roof of the vehicle, and thus is easily injured when the child seat is crashed.

[0088] The following description uses a child seat as an example, but the seat in this disclosure is not limited to a child seat and may be a high chair, a general child seat, etc.

[0089] Hereinafter, a description will be given with reference to Figs. 13 and 14, in which Fig. 13 is a schematic front view showing a seat in another embodiment of the present disclosure, and Fig. 14 is a schematic rear view showing a seat in another embodiment of the present disclosure. As shown in Figs. 13 and 14, a child seat 1S in the present disclosure includes a base 30S, a seat body 20S, and a headrest 10S. The base 30S is configured to be fixedly disposed on a vehicle seat. The seat body 20S is disposed on the base 30S and includes a backrest portion 22S and a seat portion 24S. The backrest portion 22S includes a backrest plate 23S having rigidity that provides support strength for the backrest portion 22S, and the backrest plate 24S in some embodiments is fixed to the seat body 20S. The headrest 10S is disposed on the upper part of the seat body 20S and includes a headrest bracket 12S, a headrest body 14S disposed on the headrest bracket 12S, and a guider 16S. The headrest 10S is arranged to slide up and down relative to the backrest portion 22S to adjust the position of the headrest 10S to meet the riding needs of children of different heights. The headrest main body 14S includes a guider 16S arranged at the lower end of the side wing 142S, a backrest 141S, and two side wings 142S.

[0090] 15 of the present disclosure, which is a schematic diagram showing a retaining mechanism of a seat in another embodiment of the present disclosure. The child seat 1S in the present disclosure further includes a retaining mechanism 40S that can increase the deformability of the headrest 10S when the headrest 10S is subjected to an external force impact, thereby allowing the headrest 10S to move forward, better follow the child's neck, always provide support, and keep a constant distance between the neck and the seat belt of the vehicle.

[0091] Referring to FIG. 16, FIG. 16 is a schematic rear view of a headrest bracket of a seat in another embodiment of the present disclosure, in which the headrest 10S is configured to move up and down relative to the backrest portion 22S to adjust the position of the headrest 10S, and the holding mechanism 40S limits the displacement of the headrest 10S in the front-rear and left-right directions, and the limiting fixed point between the headrest bracket 12S and the backrest plate 23S is provided below the middle part of the headrest bracket 12 along the vertical direction. The holding mechanism 40S in another embodiment includes two limiting blocks 431S arranged on both sides of the headrest bracket 12S. In order to increase the deformation ability of the headrest 10S, the limiting blocks 431S are arranged below the middle part of the headrest bracket 12S along the vertical direction, so that the vertical distance between the upper end of the limiting block 431S and the headrest main body 14S is increased. Two guide rails 231S are provided on both sides of the backrest plate 23S corresponding to the limiting block 431S, and the limiting block 431S slides up and down in the guide rails 231S, so that the headrest 10S moves up and down together with the headrest bracket 12S to meet the usage needs of children of different heights. The sliding configuration of the limiting block 431S on the guide rails 231S only limits the displacement of the headrest 10S in the front-rear and left-right directions, but does not limit the vertical sliding of the headrest 10W.

[0092] According to this modified embodiment, the retaining mechanism 40S is provided with two guide rails arranged on both sides of the headrest bracket 12S, and two limiting blocks on both sides of the backrest plate 23S corresponding to the guide rails. Similarly, in order to increase the deformation ability of the headrest 10S, the guide rails on the headrest bracket 12S are provided below the central portion of the headrest bracket 12 along the vertical direction. The sliding configuration of the limiting blocks and the guide rails allows the headrest 10S to move up and down together with the headrest bracket 12S, and the displacement of the headrest 10S in the front-rear and left-right directions can be limited.

[0093] The left and right sides of the headrest 10S are provided with guiders 16S, respectively, so that the child seat 1S can be mounted on either the left or right side of the vehicle rear seat, which makes it easy to install and use. In the booster use mode, the vehicle seat belt passes through the guider 16S, then passes through the child's chest, and is secured to the vehicle seat. In some embodiments of the present disclosure, as shown in detail in FIG. 17, which is a schematic side view of a seat headrest bracket in another embodiment of the present disclosure, the vertical distance between the lower edge of the inner opening of the guider 16S and the upper end of the limit block 431S is 110 mm or more.

[0094] According to the holding mechanism 40S of this embodiment, the limiting block 431S is disposed below the middle part of the headrest bracket 12S along the vertical direction. For example, in some embodiments, two guiders 16S are provided on both the left and right sides of the headrest 10S, and the vertical distance between the lower edge of the inner opening of each guider 16S and the upper end of the corresponding limiting block 431S is 110 mm or more, thereby reducing the limiting fixed point between the headrest bracket 12S and the backrest plate 23S, and greatly improving the deformation ability of the headrest bracket 12S. Therefore, as shown by the dotted line in Figure 18, Figure 18 is a schematic diagram showing the forward tilting movement of the seat headrest in another embodiment of the present disclosure. When the vehicle receives an impact, the headrest bracket 12S deforms, causing the headrest main body 14S and guider 16S of the headrest 10S to tilt forward due to the force of the impact. Therefore, in the child seat of this embodiment, under normal circumstances or when the vehicle receives an impact, the headrest 10S always follows the child's head, ensuring that the distance between the child's neck and the vehicle's seat belt is kept constant, reducing twisting of the vehicle's seat belt around the child's neck, and improving the comfort and safety of the child seat.

[0095] According to this embodiment of the retaining mechanism 40S, the position of the limit block 431S is moved from the upper end of the headrest bracket 12S to the lower end of the headrest bracket 12S, and the deformation ability of the headrest 10S is increased. At the same time, the overall strength of the headrest 10S and the headrest bracket 12S is not affected, providing sufficient protection for the child sitting in the car.

[0096] According to this modified embodiment, the holding mechanism 40S not only limits the displacement of the headrest 10S in the front-rear and left-right directions, but also limits the displacement of the headrest 10W in the up-down direction. That is, according to this modified embodiment, the headrest 10S cannot be adjusted in position by sliding up and down relative to the backrest portion 22S. According to this example, the position of the limiting block 431S of the holding mechanism 40S is moved from the upper end of the headrest bracket 12S to the lower end of the headrest bracket 12S, improving the deformation ability of the headrest 10S.

[0097] Next, a child seat according to another embodiment of the present disclosure will be described. First, a description will be given with reference to Figs. 19 and 20. Here, Fig. 19 is a schematic front view showing a seat according to another embodiment of the present disclosure, and Fig. 20 is a schematic rear view showing a seat according to another embodiment of the present disclosure. As shown in Figs. 19 and 20, a child seat 1S according to this embodiment includes a base 30S (not shown in Figs. 19 and 20), a seat body 20S, and a headrest 10S, as in the above-mentioned embodiment. The base 30S is configured to be fixedly disposed on a vehicle seat. The seat body 20S is disposed on the base 30S, and includes a backrest portion 22S and a seat portion 24S. The backrest portion 22S of the seat body 20S includes a backrest plate 23S. The headrest 10S is disposed on the upper portion of the seat body 20S, and includes a headrest bracket 12S, a headrest body 14S, and a guider 16S disposed on the headrest bracket 12S. The headrest 10S is arranged to slide up and down relative to the backrest portion 22S to adjust the position of the headrest 10S and meet the riding requirements of children of different heights. The headrest main body 14S includes a backrest 141S and two side wings 142S, and the guider 16S is arranged at the lower end of the side wings 142S. According to this embodiment, the child seat is configured to be used in a booster use mode, so that the sill belt of the vehicle passes through the guider 16S arranged in the headrest 10S, then passes through the child's chest, and is fixed to the vehicle seat.

[0098] The child car seat 1S in one embodiment of the present disclosure shown in Figs. 19 to 23 is provided with a holding mechanism 40S that tilts the headrest 10S forward when the child car seat 1S receives an external force impact. Unlike the other embodiment that limits the lowering of the limiting fixed point, in this other embodiment, the headrest bracket 12S, the headrest main body 14S, and the guider 16S are driven by the backrest plate 23S so as to rotate around the pivot axis and tilt forward. Specifically, the holding mechanism 40S includes a pivot shaft 42S, a fixed seat 44S, a limiting rod 46S, and a limiting chute 48S. The pivot shaft 42S penetrates the lower end of the backrest plate 23S of the child car seat 1S, i.e., is located at the lower end of the backrest plate 23S. Both ends of the pivot shaft 42S extend from the backrest plate 23S, and pivot holes 26S are provided at corresponding positions of the seat body 20S. The ends of the pivot shaft 42S are connected to the pivot holes 26S on the seat body 20S, so that the backrest plate 23S can rotate in the front-rear direction of the child seat 1S relative to the seat body 20S on the pivot shaft 42S. The fixed seat 44S is fixed to the backrest plate 23S and is located on the rear side of the backrest plate 23S. For example, the fixed seat 44S is fixed to the back of the backrest plate 23S, and a perforation 441S is provided in the fixed seat 44S. The limit rod 46S penetrates the fixed seat 44S, the seat body 20S, and the fixed seat 44S so that the backrest plate 23S, the headrest 10S, and the seat body 20S are connected via the fixed seat 44S. The limiting chute 48S (shown in FIG. 22) is provided in the seat body 20S, and the limiting rod 46S is arranged to slide in the limiting groove 47S. The limiting rod 46S is located above the pivot shaft 42S, for example, the limiting rod 46S is located in the central portion of the backrest plate 23S along the vertical direction.

[0099] Referring again to FIG. 21, FIG. 21 is a schematic diagram of a holding mechanism 40S according to another embodiment of the present disclosure. The holding mechanism 40S in some embodiments further includes an elastic element 49S disposed between the back surface of the seat body 20S and the limiting rod 46S, which tends to push the limiting rod 46S backward under normal circumstances, so that the limiting rod 46S is directed in a direction away from the back surface of the seat body 20S, and further drives the backrest plate 23S fixedly connected to the limiting rod 46S, so that the back surface of the backrest plate 23S comes into contact with the seat body 20S. FIG. 21 also shows an opening 29S provided in the seat body 20S, and the position of the opening 29S corresponds to the position of the fixed sheet 44S, so that the fixed sheet 44S passes through the opening 29S and is exposed to the back surface of the seat body 20, and thus the backrest plate 23S, the headrest 10S, and the seat body 20S are connected.

[0100] The elastic element 49S is a spring, an aluminum honeycomb plate, an elastic sheet, an elastic plastic body, or an EPS buffer. As shown in Fig. 21, the limiting rod 46S has insertion holes 461S at both ends through which pins (not shown) are inserted to limit both ends of the limiting rod 46S. The seat body 20S has the elastic element 49S sleeved therein, and a limiting ring 28S (shown in Fig. 22) is provided to position the elastic element 49S in the radial direction and to incline it from the rear to the front.

[0101] Next, the operation of the holding mechanism according to this embodiment in different states will be described with reference to Figs. 22 and 23. Fig. 22 is a schematic diagram showing a first state of the holding mechanism according to another embodiment of the present disclosure, and Fig. 23 is a schematic diagram showing a second state of the holding mechanism according to another embodiment of the present disclosure. The state shown in Fig. 22 is that the vehicle is in a normal state. As shown in Fig. 22, the limiting rod 46S is located at the rear end position of the limiting chute 48S, and the limiting rod 46S is pushed backward together with the backrest plate 23S by the elastic element 49S.

[0102] When the vehicle is impacted, as shown in Fig. 23, the impact force causes the limit rod 46S to move forward along the limit chute 48S and reach the tip of the limit chute 48S against the thrust of the elastic element 49S. At the same time, the pivot shaft 42S at the lower end of the backrest plate 23S starts to rotate, which allows the backrest plate 23S to rotate forward along the front-rear direction of the child seat 1S based on the configuration of the pivot shaft 42S and the limit rod 46S, and when a collision occurs, the backrest plate 23, the headrest bracket 12S, the headrest main body 14S and the guider 16S also follow the movement of the child's head, ensuring that the distance between the neck and the vehicle seat belt does not change, and solving the problem of the vehicle seat belt twisting the neck. In the illustrated embodiment, the limit chute 48S is inclined from rear to front. Due to the impact force, the limiting rod 46S rotates forward together with the backrest plate 23S and moves forward along the rotation path of the limiting chute 48S against the thrust of the elastic element 49S, moving from the rear lower end of the limiting chute 48S to the front upper end of the limiting groove 48R.

[0103] Therefore, in the child seat 1S in the present disclosure, the headrest 10S is provided to be easily deformed, or the backrest plate 23S is provided to be rotatable with respect to the seat body 20S, thus avoiding the rigid resistance existing in the prior art, and avoiding the twisting force generated when the rigid resistance is impacted on the child's neck, thereby improving the comfort and safety of using the child safety seat. The present disclosure provides a retaining mechanism that can reduce the twisting of the vehicle seat belt to the neck when the seat is impacted, and a seat including the retaining mechanism to improve the comfort and safety of the seat.

[0104] The following description will be given with reference to Figs. 24 and 25. The present disclosure also aims to effectively avoid misuse of the headrest height by preventing a parent from adjusting the headrest too high while a small child is sitting in the child seat, or preventing a parent from adjusting the headrest too low while a large child is sitting in the child seat, thereby helping to improve safety and comfort in the child seat. The presence or absence of a crotch belt buckle receiver is used to limit the height of the headrest and adjust the length of the shoulder belt, and prevents misuse of the fastener of the child seat or safety belt of the car. Here, the inside of the seat body refers to the side where a child may sit, and the outside of the seat body refers to the opposite side to the inside.

[0105] 24-25 show a crotch belt buckle receiving device 111T arranged on a seat portion 180T of a child car seat 100T, having a receiving slot 111fT for receiving a crotch belt buckle 120T and a trigger 112T arranged on the receiving slot 111fT. The crotch belt buckle 120T is connected to the child car seat 100T via a belt. The crotch belt buckle receiving device 111T further includes a receiving cover 111eT for covering the opening of the receiving slot 111fT of the crotch belt buckle receiving device 111T in order to ensure the flatness of the seat portion 180T of the child car seat 100T. The receiving cover 111eT is hingedly connected to the seat portion 180T. A shoulder belt perforation 160T is provided on a headrest bracket 140T of the child car seat 100T, and the shoulder belt 161T can pass through the shoulder belt perforation. The crotch belt buckle receiving device 111T further includes a locking member 170T for controlling locking and unlocking of the adjustment belt 171T. One end of the shoulder belt 161T exposed from the shoulder belt perforation 160T is connected to the shoulder belt buckle 162T, and the other end of the shoulder belt is connected to one end of the adjustment belt 171T not exposed from the locking member 170T. The length of the shoulder belt 161T is adjusted by adjusting the stretching of the belt 171T to accommodate different heights of children, and is then locked by the locking member 170T upon appropriate adjustment. The crotch belt buckle 120T is connected to the seat portion 180T via the belt. FIG. 26 shows that the receiving slot 111fT is provided with a trigger 112T that is movable between an extended position and a retracted position relative to the inner wall of the receiving slot 111fT.

[0106] The elastic fingers 111dT for fixing the crotch belt buckle 120T are arranged on the side of the crotch belt buckle receiving device 111T as shown in FIG. 27. The elastic fingers 111dT are arranged on both sides of the inner wall of the receiving slot 111fT. The seat body 110T is provided with a hinge hole 115T hinged to the receiving cover 111eT. The crotch belt buckle receiving device 111T has a receiving cover hinge shaft 111gT (shown in FIG. 31) connected to the receiving cover 111eT, and the receiving cover hinge shaft 111gT extends into the hinge hole 115T to hinge the receiving cover 111eT. By hinge-fixing the receiving cover 111eT, the receiving cover 111eT is easy to open and close, and is not lost.

[0107] As shown in FIG. 31, an opening 111bT is provided in the crotch belt buckle receiving device 111T, and the trigger end 112eT of the trigger 112T extends into the crotch belt buckle receiving device 111T through this opening. Specifically, an opening 111bT is provided in the wall of the receiving slot 111fT corresponding to the trigger 112T, and the trigger end 112eT of the trigger 112T extends into the receiving slot 111fT through this opening. The trigger 112T is provided with a fixed column 112dT for fixing one end of the link 113T. The receiving slot 111fT of the crotch belt buckle receiving device 111T is provided with a notch 111cT for avoiding the fixed column 112dT to cooperate with the receiving slot 111fT and to allow the trigger 112T to move forward and backward. The stroke of the trigger 112T is determined by determining the size of the notch 111cT.

[0108] As shown in Figures 31, 35, and 37, the first spring 112aT is disposed in the trigger 112T so that the crotch belt buckle 120T is removed from the receiving slot 111fT at the same time that the trigger 112T is in the extended position. Specifically, the first spring 112aT exerts a force on the trigger 112T to move from the contracted position to the extended position so that the trigger 112T moves to the extended state while removing the crotch belt buckle 120T. That is, when the crotch belt buckle 120T is removed from the receiving slot 111fT, the restoring force of the first spring 112aT forces the trigger 112T to move to the extended position. As shown in Figure 31, the trigger 112T is provided with a slide slot 112cT, and the first spring 112aT is provided in the slide slot 112cT. The crotch belt buckle receiving device 111T is provided with a limit column 111aT, and the limit screw 112bT is connected to the limit column 111aT through a slide slot 112cT. One end of the first spring 112aT abuts against the inner wall (i.e., the trigger end 112eT) of the slide slot 112cT, and the other end abuts against the limit column 111aT. In one embodiment of the present disclosure, the limit column 111aT is provided outside the receiving slot 111fT, and the limit column 111aT extends into the slide slot 112cT and limits the trigger 112T together through the limit screw 112bT connected to the terminal of the limit column 111aT. The width of the head of the limit screw 112bT is larger than the width of the slide slot 112cT. The limit screw 112bT is configured to fix the trigger 112T to the receiving slot 111fT and limit the stroke of the trigger 112T.

[0109] Figures 29, 33, 35 and 37 show a limiting device 150T including a drive member 155T, a limiting pin 152T, a resilient catch 151T, an upper step 153T, a lower step 154T and a pin 157T. The drive member 155T is attached to the backrest 190T and is movable relative to the backrest 190T. The limiting pin 152T is attached to the backrest 190T and is movable relative to the drive member 155T. The resilient catch 151T is provided on the backrest 190T and the limiting pin 152T is provided on the resilient catch. The headrest 130T is provided with an upper step 153T and a lower step 154T.

[0110] The driving member 155T is provided with a driving chute 155aT for driving the operation of the limiting pin 152T. The driving chute 155aT extends in a direction not parallel to the moving direction of the driving member 155T, and one end of the limiting pin 152T is connected to the driving chute 155aT so as to be movable along the driving chute 155uT relative to the driving member 155T.

[0111] As shown in Fig. 29, a second spring 155bT connected between the backrest 190T and the driving member 155T resets the driving member 155T while the crotch belt buckle 120T is removed from the receiving slot 111fT. The second spring 155bT exerts a force on the driving member 155T to pull it toward the headrest 130T. As shown in Figs. 33 and 35, the backrest 190T is provided with a hook 114T for fixing one end of the second spring 155bT. The driving member 155T is provided with a fixing hook 155cT for fixing the other end of the second spring 155bT.

[0112] As shown in FIG. 29, the driving member 155T is provided with a fixed cover 156T for limiting the direction perpendicular to the link direction of the driving member 155T. Here, the link direction refers to the direction in which the driving member 155T is pulled by the second spring 155bT or the link 113T. The fixed cover 156T is fixed to the backrest 190T and covered by the driving member 155T, and the driving member 155T is movable within the fixed cover 156T. As shown in FIG. 33, FIG. 35, and FIG. 37, a limiting groove 155dT extending in the moving direction of the driving member 155T is provided on one of the driving member 155T and the fixed cover 156T, and a limiting hole 157bT is provided on the other of the driving member 1559 and the fixed cover 156T, and a pin 157T is inserted into the limiting hole 157b and the limiting groove 155d. The limiting groove 155dT cooperates with the limiting pin 157T to limit the stroke of the driving member 155T in the link direction. The pin 157T is inserted into the limiting groove 155dT and can move along the limiting groove 155nT. As shown in FIG. 33, the fixed cover 156T is provided with a fixing lug 156aT for fixing the fixed cover 156T to the seat main body 110T, and the seat main body 110T is provided with a fixing boss 116T that fits the fixing lug 156aT and fixes the fixed cover 156T.

[0113] As shown in Fig. 29, the trigger 112T is connected to the limiting device 150T via the link 113T, and as shown in Fig. 37, when the crotch belt buckle 120T is received in the receiving slot 111fT of the crotch belt buckle receiving device 111T, the trigger 112T is in the contracted position, and the limiting device 150T limits the lower limit stroke of the headrest 130T of the child seat 100T relative to the backrest 190T of the seat body 110T. As shown in Fig. 35, when the crotch belt buckle 120T is not received in the receiving slot 111fT of the crotch belt buckle receiving device 111T, the trigger 112T is in the extended position, and the limiting device 150T limits the upper limit stroke of the headrest 130T relative to the backrest 190T.

[0114] As shown in FIG. 31, the trigger 112T is provided with a fixed column 112dT for fixing one end of the link 113T, and the drive member 155T is provided with a fixed slot 155eT for fixing the other end (shown in FIG. 33) of the link 113T.

[0115] As shown in FIG. 29, the link 113T is a steel wire for connecting the trigger 112T to the driving member 155T. In some embodiments, the link 113T is a flexible rope. The link 113T (specifically a steel wire or a flexible rope) transmits a tensile force generated when the trigger 112T is pressed by the crotch belt buckle 120T to pull the driving member 155T, and the link 113T is pressed by the first spring 112aT and pulled by the second spring 155bT at the same time when the crotch belt buckle 120T is removed from the crotch belt buckle receiving device 111T. That is, the restoring force directions of the first spring 112aT and the second spring 155bT are the same.

[0116] The procedure of the present disclosure will be described below.

[0117] As shown in Fig. 35, when the crotch belt buckle 120T is not placed on the crotch belt buckle receiving device 111T, the driving member 155T is pulled by the second spring 155bT so that the limiting pin 152T is in the contracted position by the driving chute 155aT (the driving chute 155aT retracts the limiting pin 152T with the movement of the driving member 155T). Even if the driving member 155T moves or stops within the fixed cover 156T (the limiting groove 155dT cooperates with the pin 157T to limit the stroke of the driving member 155T in the link direction), the elastic catch 151T is pressed against the inside of the seat main body 110T (the elastic catch 151T cannot move to the outside of the seat main body 110T). Meanwhile, the elastic catch 151T and the upper limit step 153T of the headrest 130T form a block limit for limiting the upper limit stroke of the headrest 130T, and the trigger 112T is pulled by the link 113T to protrude the inner wall of the receiving slot 111fT.

[0118] As shown in Fig. 37, when the crotch belt buckle 120T is placed in the crotch belt buckle receiving device 111T, the crotch belt buckle 120T presses down the trigger 112T to drive the link 113T, which pulls the driving member 155T and extends the limit pin 152T under the action of the driving chute 155aT (the driving chute 155aT moves together with the driving member 155T and extends the limit pin 152T), forming a block limit with the lower limit step 154T of the headrest 130T and limiting the lower limit stroke of the headrest 130T. As shown in Fig. 37, when the link 113T pulls the driving member 155T and moves in a direction approaching the seat portion 180T, the driving member 155T is no longer pressed against the elastic catch 151T, and thus the elastic catch 1515T can be elastically deformed. In this case, when the headrest 130T is adjusted upward, the upper limit step 153T exceeds the elastic catch 151T, allowing the headrest 130T to be adjusted upward.

[0119] In other words, when the trigger 112T is in its retracted position, the drive member 155T is moved by the link 113T in a direction toward the seat portion 180T, and the limit pin 152T can move relative to the drive chute 155aT to extend into the backrest 190T and abut against the underside of the lower limit step 154T of the headrest 130T to prevent the headrest 130T from moving downward relative to the backrest 190T. When the trigger 112T is in its extended position, the drive member 155T is moved away from the seat portion 180T, and the limit pin 152T can move relative to the drive chute 155aT to move away from the backrest 190T. The resilient catch 151T can abut against the upper side of the upper limit step 153T of the headrest 130T to prevent the headrest 130T from moving upward relative to the backrest 190T. That is, in the harness use mode, as shown in Fig. 35, the crotch belt buckle 120T is not placed on the crotch belt buckle receiving device 111T, and the driving member 155T is pressed against the elastic catch 151T, so that the elastic catch 1515T blocks the upper limit step 153T of the headrest 130T, whereas in the booster use mode, as shown in Fig. 37, the crotch belt buckle 120T is placed on the crotch belt buckle receiving device 111T, and the driving member 155T is not pressed against the elastic catch 151T, so that the elastic catch 1515T can be elastically deformed. In this case, when the headrest 130T is adjusted upward, the upper limit step 153T can overcome the elastic catch 151T.

[0120] The child seat 100T shown in Fig. 24 includes a seat body 110T in which the above-mentioned crotch belt buckle receiving device 111T is disposed on a seat portion 180T of the seat body 110T, and a headrest 130T. The child seat 100T has a harness use mode and a booster use mode. In the harness use mode, the crotch belt buckle 120T is not received by the crotch belt buckle receiving device 111T, and in the booster use mode, the crotch belt buckle 120T is received by the crotch belt buckle receiving device 111T.

[0121] As described above, it is desired to switch to the booster use mode, and according to the present disclosure, even if the headrest 130T is adjusted downward by mistake, the parent can only adjust the headrest 130T to the lowest position in the booster use mode at most (the limit pin 152T extends to form a block limit with the lower limit step 154T, limiting the lower limit stroke of the headrest 130S). That is, in the harness use mode, the headrest 130T cannot be adjusted to a lower position, so that the height of the headrest 103T and the length of the shoulder belt 161T can be adjusted only by the shift position in the booster use mode. At the same time, the shoulder belt 161T passes through the headrest bracket 140T, synchronously extending the length of the shoulder belt 161T.

[0122] In the booster use mode, the crotch belt buckle 120T needs to be accommodated in the receiving slot 111fT and the upper stroke limit of the headrest 130T needs to be released (because the driving member 155T is not pressed against the elastic catch 151T, the elastic catch 1515T is elastically deformed, in this case, when the headrest 130T is adjusted upward, the upper step 153T can straddle the elastic catch 151T and release the upper stroke limit), so that the headrest 130T and the shoulder belt 161T can be adjusted to the appropriate height and length, and the lower stroke limit of the headrest 130T is limited to prevent the headrest 130T from being adjusted to a too low range position. In the harness use mode, the crotch belt buckle 120T and the shoulder buckle 162T are fixedly arranged, so that after the crotch belt buckle 120T is taken out of the receiving slot 111fT, the upper stroke limit of the headrest 130T is limited by the limiting device 150T to prevent the headrest 130T from being adjusted too far upward. This ensures the accuracy of the two usage patterns and further ensures the safety of use to avoid misuse.

[0123] In other words, in the harness use mode, the crotch belt buckle 120T is used in cooperation with the shoulder belt buckle 162T, so that the crotch belt buckle 120T is not placed in the receiving slot 111fT. At this time, the driving member 155T is pulled by the second spring 155bT, so that the limit pin 152T is in the contracted position, the driving member 155T is inwardly pressed by the elastic catch 151T, and the trigger 112T is pulled by the link 113T and protrudes from the inner wall of the receiving slot 111fT. At the same time, the elastic catch 1515T and the upper limit step 153T of the headrest 130T form a block limit, limiting the upper limit stroke of the headrest 130T, so that the headrest 130T cannot be adjusted upward, that is, it is always in the low shift position in the harness use mode. In the booster mode, the crotch belt buckle 120T is placed in the receiving slot 111fT, so that the trigger 112T is pressed by the crotch belt buckle 120T to drive the link 113T, and the link 113T pulls the driving member 155T to allow the limit pin 152T to protrude, forming a block limit with the lower limit step 154T of the headrest 130T to limit the lower limit stroke of the headrest 130T, so that the headrest 130T cannot be adjusted downward, and is always in the booster mode in the high shift position. When an older child uses the higher mode of the child seat and uses the crotch belt buckle 120T, it is found that the child's head is higher than the headrest 130T and the headrest 130T cannot be adjusted upward, which may remind the parent to put the crotch belt buckle into the receiving slot 111fT and use the vehicle safety belt. In comparison, when the harness use mode of the child seat is used by a young child and the vehicle's seat belt is used, the child's head may be found to be lower than the head restraint 130T and the head restraint 130T may not be adjusted downward, which may alert the parent to use the crotch belt buckle 120T rather than the safety of the vehicle.

[0124] In one aspect, a base for a child seat is provided, the base including a housing, a base bracket, and an anchor assembly, the base bracket being housed within the housing, the anchor assembly being telescopically and rotatably connected to the base bracket and extending at least partially from the housing.

[0125] In one embodiment, the anchor assembly includes a pivot shaft, a first slide groove is formed in the base bracket, and the pivot shaft is slidably disposed in the first slide groove to form a pivot point.

[0126] In one embodiment, the anchor assembly further comprises a connection portion, the connection portion being capable of being anchored to a fixed rod of a vehicle seat to form an anchor point.

[0127] In one embodiment, the anchor assembly further includes a slide portion, the pivot shaft is located at one end of the slide portion, and the connection portion is fixedly connected to the other end of the slide portion to form a distance between the pivot point and the anchor point, generating a force arm for receiving a force when the base is impacted, and having a buffering function.

[0128] In one embodiment, the slide portion includes a reinforcing element fixedly connected to the slide portion to enhance strength of the anchor assembly.

[0129] In one embodiment, the connection is an ISOFIX fixing element.

[0130] In one embodiment, the base further includes a press limit block and a reset element, the press limit block rotatably connected to the base bracket, and the reset element connected to the base bracket and the press limit block and configured to hold a reset force applied to the press limit block.

[0131] In one embodiment, the base bracket is formed with a limiting groove for limiting the rotation angle of the press limit block.

[0132] In one embodiment, the press limit block includes a limiting hole defined within the limiting groove.

[0133] In one embodiment, the press limit block includes a second slide groove, the anchor assembly includes a connecting rod, the base bracket includes a rotation limiting groove, and the connecting rod passes through the second slide groove and the rotation limiting groove.

[0134] In one embodiment, the press limit block and the anchor assembly are located on opposite sides of the rotation limiting groove.

[0135] In one embodiment, the base bracket includes two press limiting blocks and two anchor assemblies, the base bracket includes two rotation limiting grooves, each of the two press limiting blocks includes a second slide groove, and the two anchor assemblies are connected via a connecting rod, and the connecting rod passes through the two second slide grooves and the two rotation limiting grooves.

[0136] In one embodiment, the base bracket includes two press limiting blocks and two anchor assemblies, the base bracket includes two rotation limiting grooves, each of the two press limiting blocks includes a second slide groove, and each of the two anchor assemblies includes a connecting rod, each connecting rod passing through one of the second slide grooves and one of the rotation limiting grooves.

[0137] In one embodiment, the direction in which the anchor assembly extends from the housing is defined as a rearward direction, the rotation-limiting groove is positioned in a front-to-back direction, and the size of the rotation-limiting groove increases gradually from front to back.

[0138] In one embodiment, the base further includes a telescoping adjustment assembly, the anchor assembly includes a plurality of locking holes, and the telescoping adjustment assembly selectively engages one of the locking holes.

[0139] In one embodiment, the telescopic adjustment assembly includes a telescopic adjustment handle, a linkage arm, and a locking pin, the telescopic adjustment handle connected to the locking pin via the linkage arm, and movement of the telescopic adjustment handle disengages the locking pin from one of the locking holes.

[0140] In one embodiment, the telescoping adjustment handle is at least partially exposed through the housing.

[0141] In one embodiment, the linkage arm is L-shaped.

[0142] In one embodiment, one end of the linkage arm is connected to the lock pin and the other end of the linkage arm is rotatably connected to the telescopic adjustment handle, and the linkage arm is rotatable about a portion between the one end and the other end.

[0143] In one embodiment, the telescoping adjustment assembly further includes a reset element that tends to engage the locking pin with one of the locking holes.

[0144] In one embodiment, the base has two anchor assemblies with a connecting rod formed between the two anchor assemblies to maintain synchronous movement of the two anchor assemblies.

[0145] In another aspect, the present disclosure provides a base, the base including a housing, a base bracket, and an anchor assembly, the housing enclosing a space, the base bracket being disposed in the space and forming a first slide groove, and the anchor assembly having a pivot shaft positioned in the first slide groove to form a pivot point.

[0146] In one embodiment, the anchor assembly has a horizontal state and an inclined state, and when in the horizontal state, the anchor assembly is parallel to a bottom surface of the housing, and when in the inclined state, the anchor assembly forms an angle with the bottom surface of the housing.

[0147] In one embodiment, the anchor assembly has an extended position and a retracted position, the anchor assembly extending further into the housing in the extended position than in the retracted position.

[0148] In one embodiment, the base bracket includes two symmetrical sheets, and a base bracket connecting rod is formed between the two sheets to maintain a fixed distance between the two sheets.

[0149] In one embodiment, the base includes two anchor assemblies, each of the two sheets forming one of two first slide grooves, and each pivot shaft of the two anchor assemblies being located in one of the two first slide grooves.

[0150] In one embodiment, the base further includes two press limit blocks rotatably connected respectively to the two seats of the base bracket, each of the two press limit blocks applying a restoring force to one of the two anchor assemblies tending to maintain each of the two anchor assemblies in a horizontal state.

[0151] In one embodiment, each of the two anchor assemblies includes a reinforcing element, a portion of which extends vertically upward and is formed on a side of the sheet opposite the press limit block, the reinforcing element being formed as a sheet.

[0152] In one embodiment, each of the sheets of the base bracket includes a rotation-limiting groove, and a connecting rod passes through the rotation-limiting groove of each of the sheets and is connected to the reinforcing elements of the two anchor assemblies.

[0153] In one embodiment, a second slide groove is formed in each of the two press limiting blocks, and the connecting rod passes through the second slide grooves of the two press limiting blocks.

[0154] In one embodiment, each of the sheets of the base bracket includes a rotation-limiting groove, and each of two connecting rods passes through the rotation-limiting groove of one of the two sheets and is connected to the reinforcing element of one of the two anchor assemblies.

[0155] In one embodiment, each of the two press limiting blocks is further provided with a second slide groove, and each of the two connecting rods passes through the second slide groove of one of the two press limiting blocks.

[0156] In one embodiment, a plurality of locking holes are formed in each reinforcing element, and the base further includes a telescopic adjustment assembly including two locking pins, each of which is operably inserted into one of the plurality of locking holes of each of the reinforcing elements, thereby fixing the two anchor assemblies in either the extended position, the retracted position, or one or more other positions between the extended position and the retracted position.

[0157] In one embodiment, a connecting rod is formed between the two anchor assemblies to maintain synchronous telescopic movement of the two anchor assemblies.

[0158] In one embodiment, the telescoping adjustment assembly includes a telescoping adjustment handle, the telescoping adjustment handle operable to simultaneously disengage the two locking pins from the corresponding locking holes.

[0159] In one embodiment, the telescoping adjustment handle extends at least partially from the housing, or the telescoping adjustment handle is at least partially exposed from a bottom of the housing.

[0160] In one embodiment, the telescopic adjustment handle is provided with a recess recessed into the space.

[0161] In another aspect, the present disclosure provides a child car seat, the child car seat including the base and a seat body located on the base.

[0162] In one embodiment, the seat is rotatable relative to the base.

[0163] In one embodiment, a slide adjustment slot is formed in the base bracket of the base, and a portion of the seat body is positioned within the slide adjustment slot, thereby allowing the seat body to slide relative to the base.

[0164] In another aspect, the present application provides a seat, the seat including a seat body, a headrest, and a retaining mechanism, the seat body including a backrest portion, the backrest portion including a backrest plate, the headrest being provided on an upper portion of the seat body and including a headrest bracket and a headrest body provided on the headrest bracket, the headrest bracket being connected to the backrest plate, and the retaining mechanism being configured to tilt forward when the headrest is subjected to an external force impact.

[0165] In one embodiment, the headrest moves up and down relative to the backrest portion to adjust the position of the headrest, and the retention mechanism limits displacement of the headrest in the front-to-back and left-to-right directions.

[0166] In one embodiment, a limit fixing point between the headrest bracket and the backrest plate is provided below a central portion of the headrest bracket along a longitudinal direction.

[0167] In one embodiment, the headrest includes a guider provided at the lower end of the headrest body, and the vertical distance between the lower edge of the internal opening of the guider and the upper end of the limit fixing point is 110 mm or more.

[0168] In one embodiment, the retention mechanism includes at least one limit block provided on the headrest bracket, the limit block being provided below a central portion of the headrest bracket along a longitudinal direction; and at least one guide rail is provided on the backrest plate corresponding to the limit block, the limit block sliding within the guide rail and provided below the central portion of the headrest bracket along the longitudinal direction.

[0169] In one embodiment, the retaining mechanism includes two limit blocks provided on both sides of the headrest bracket, the limit blocks being provided below a central portion of the headrest bracket along the vertical direction; two guide rails are provided on both sides of the backrest plate corresponding to the limit blocks, each of the limit blocks slides on one of the guide rails, and the limit blocks are provided below a central portion of the headrest bracket along the vertical direction.

[0170] In one embodiment, the retaining mechanism includes two guide rails provided on both sides of the headrest bracket, and two limit blocks are provided on both sides of the backrest plate corresponding to the guide rails, respectively, the guide rails are provided below a central portion of the headrest bracket along a vertical direction, and each of the limit blocks slides on one of the guide rails.

[0171] In one embodiment, the headrest includes at least one guider provided at the lower end of the headrest body, and the vertical distance between the lower edge of the internal opening of the guider and the upper end of the corresponding limiting block is 110 mm or more.

[0172] In one embodiment, the retaining mechanism allows the backrest plate to tilt forward when subjected to an external force impact, and includes a rotation mechanism and a limiting mechanism, wherein the rotation mechanism rotatably connects the backrest plate to the seat body via a lower end of the backrest plate, and the limiting mechanism retains the backrest plate in a first state when the backrest plate is not subjected to an external force impact, and tilts the backrest plate in a second state when the backrest plate is subjected to an external force impact.

[0173] In one embodiment, the rotation mechanism includes a pivot shaft that passes through a lower end of the backrest plate of the seat and is connected at both sides to pivot holes in the seat body of the seat.

[0174] In one embodiment, the limiting mechanism includes a fixed sheet, a limiting rod, a limiting chute, and an elastic element, the fixed sheet is fixed to the back of the backrest plate and has a perforation, the limiting rod passes through the perforation on the seat body and the fixed sheet to connect to the backrest plate, the headrest, and the seat body, the limiting chute is provided on the seat body, the limiting rod slides within the limiting chute, and the elastic element is provided between the seat body and the limiting rod.

[0175] In one embodiment, the seat body is provided with a limiting ring, and the elastic element is sleeved onto the limiting ring to position the elastic element in the radial direction.

[0176] In one embodiment, the resilient element is a spring, an aluminum honeycomb plate, a resilient sheet, a resilient plastic body, or an EPS buffer.

[0177] In one embodiment, an insertion hole is provided at each end of the limiting rod, and a pin is inserted into the insertion hole to limit each end of the limiting rod.

[0178] In one embodiment, the sheet body is provided with an opening through which the fixing sheet passes through the sheet body.

[0179] In another aspect, the present disclosure provides a retention mechanism, the retention mechanism being attached to a seat and capable of tilting a headrest of the seat forward when the seat is subjected to an impact of an external force, the retention mechanism including a pivot shaft, a fixed seat, a limit rod, and a limit chute, the pivot shaft penetrating a lower end of the backrest plate of the seat and respectively connected to pivot holes on both sides of a seat body of the seat, the fixed seat being fixed to a rear surface of the backrest plate and having a perforation, the limit rod penetrating the seat body and the perforation of the fixed seat and connected to the backrest plate, the headrest, and the seat body, the limit chute being provided in the seat body, and the limit rod sliding within the limit chute.

[0180] In one embodiment, the retaining mechanism further includes an elastic element provided between the seat body and the limiting rod, the elastic element tending to push the limiting rod away from the seat body in a normal state.

[0181] In one embodiment, the seat body comprises a limiting ring, and the elastic element is sleeved onto the limiting ring to radially position the elastic element.

[0182] In one embodiment, the resilient element is a spring, an aluminum honeycomb plate, a resilient sheet, a resilient plastic body, or an EPS buffer.

[0183] Both ends of the limiting rod are respectively provided with insertion holes, and pins are inserted into the insertion holes to limit the both ends of the limiting rod, respectively.

[0184] In one embodiment, the seat body is provided with an opening for the fixing sheet to pass through the seat body.

[0185] In another aspect, the present disclosure provides a seat, the seat including a base, a seat body, and a headrest, the seat body being provided on the base and including a backrest portion, the backrest portion including a backrest plate, the headrest being provided on an upper portion of the seat body and including a headrest bracket and a headrest body provided on the headrest bracket, and the seat further including the retaining mechanism described above.

[0186] The present disclosure also provides a crotch belt buckle receiving device, which is provided on a seat portion of a seat body of a child seat, the crotch belt buckle receiving device including a receiving slot and a trigger, the receiving slot is used for receiving a crotch belt buckle, the trigger is provided in the receiving slot and can move between an extended position and a contracted position relative to an inner wall of the receiving slot, the trigger is connected to a limiting device via a link, whereby, when the crotch belt buckle is received in the receiving slot, the trigger is in the contracted position and the limiting device limits a lower limit stroke of a headrest of the child seat relative to a backrest of the seat body, and when the crotch belt buckle is not received in the receiving slot, the trigger is in the extended position and the limiting device limits an upper limit stroke of the headrest relative to the backrest.

[0187] In one embodiment, a first spring is disposed within the trigger, and the first spring constantly exerts a force to move the trigger from the contracted position to the extended position, thereby causing the trigger to move to the extended position when the crotch belt buckle is released.

[0188] In one embodiment, an opening is provided in a wall of the receiving slot corresponding to the trigger, and a trigger end of the trigger extends through the opening into the receiving slot.

[0189] In one embodiment, the trigger is provided with a sliding slot and a limiting column is provided outside the receiving slot, the limiting column extending into the sliding slot to limit the trigger.

[0190] In one embodiment, the first spring is disposed within the slide slot and has one end restrained by the trigger end and the other end restrained by the restraining column.

[0191] In one embodiment, the trigger is provided with a fixed column for fixing one end of the link, and the receiving slot is provided with a notch for clearing the fixed column.

[0192] In one embodiment, elastic fingers for fastening the crotch belt buckle are provided on both sides of the inner wall of the receiving slot.

[0193] In one embodiment, the device further comprises a receiving cover for covering the opening of the receiving slot, the receiving cover being hinged to the seat portion to ensure a flatness of the surface of the seat portion.

[0194] In one embodiment, the link is a steel wire or a flexible rope that provides an interlock between the trigger and the limiting device.

[0195] In one embodiment, a limit screw is connected to a terminal of the limit column, and the width of the head of the limit screw is greater than the width of the slide slot.

[0196] In one embodiment, the limiting device includes a drive member, a limiting pin, an elastic catch, an upper step and a lower step, the drive member is attached to the backrest and is movable relative to the backrest, the limiting pin is attached to the backrest and is movable relative to the drive member, the elastic catch is attached to the backrest, the limiting pin is inserted into the elastic catch, and the upper step and the lower step are provided on the headrest.

[0197] In one embodiment, the other end of the link is fixed to the drive member.

[0198] In one embodiment, a second spring is connected between the backrest and the drive member, the second spring constantly exerting a force on the drive member pulling on the headrest.

[0199] In one embodiment, the backrest is provided with a hook for fixing one end of the second spring, and the drive member is provided with a fixing hook for fixing the other end of the second spring.

[0200] In one embodiment, the seat backrest further includes a fixed cover fixed to the backrest and covering the drive member, the drive member being movable within the fixed cover.

[0201] In one embodiment, one of the drive member and the fixed cover is provided with a limiting slot extending along the movement direction of the drive member, and the other of the drive member and the fixed cover is provided with a limiting hole, and the limiting device includes a pin that is inserted into the limiting hole and the limiting slot and is movable along the limiting slot.

[0202] In one embodiment, the drive member is provided with a drive chute, the drive chute extending in a direction non-parallel to the direction of movement of the drive member, one end of the limiting pin is connected to the drive chute, and the limiting pin is movable along the drive chute relative to the drive member.

[0203] In one embodiment, when the trigger is in the retracted position, the drive member moves toward the seat portion due to the action of the link, and the limit pin moves relative to the drive chute to extend into the backrest and abuts against the underside of the lower limit step to prevent the headrest from moving downward relative to the backrest, and when the trigger is in the extended position, the drive member moves away from the seat portion, the limit pin moves away from the backrest relative to the drive chute, and the elastic catch abuts against the upper side of the upper limit step to prevent the headrest from moving upward relative to the backrest.

[0204] The present disclosure provides a child seat including a seat body and a headrest, and the crotch belt buckle receiving device is provided on a seat portion of the seat body.

[0205] In one embodiment, the child seat has a band use mode and a pull-up use mode, and in the band use mode, the crotch belt buckle is not received in the receiving slot, and in the pull-up use mode, the crotch belt buckle is received in the receiving slot.

[0206] In one embodiment, the headrest further includes a locking member for controlling the locking or unlocking of the adjustment belt, and a shoulder belt hole through which the shoulder belt passes is provided in the headrest bracket of the headrest, one end of the shoulder belt exposed from the shoulder belt hole is connected to a shoulder belt buckle, and the other end of the shoulder belt is connected to one end of the adjustment belt that is not exposed from the locking member, and the crotch belt buckle is connected to the seat portion via a blade strap.

[0207] According to the above aspects, the present disclosure has at least one of the following advantages.

[0208] 1. The anchor assembly of the base of the present disclosure can be telescopically adjusted to accommodate different vehicle seats, and can easily engage and connect with the connector on the vehicle seat. At the same time, one end of the anchor assembly can be rotated and connected, so that the child seat can sink well after sitting on the child seat, thereby preventing the child's head from easily hitting the roof, better protecting the child, and ensuring the safety of using the child seat.

[0209] 2. At the same time, the pivot point of the anchor assembly is away from the catch point and the force arm is longer, so it can withstand greater force when impacted, and also has better buffering function, better safety and better protection for children.

[0210] 3. In addition, compared with the sliding iron tube of the prior art, the weight of the anchor assembly including the reinforcing elements has been significantly reduced, making it more convenient for users to carry, install and use, and greatly improving the operating experience of the child car seat.

[0211] 4. After the child leaves the car seat, the anchor assembly can be reset automatically, without any additional operations, making it easy to use.

[0212] 5. The anchor assembly can have multiple extension lengths to allow easy adjustment of the child seat mounting position.

[0213] 6. The extension length adjustment handle of the anchor assembly can be adjusted to extend or retract, allowing for one-handed operation for added convenience.

[0214] 7. In the present disclosure, a link is formed between the anchor assemblies to allow the two anchor assemblies to maintain synchronous movement to avoid the base tilting or becoming unbalanced during use.

[0215] 8. According to the child seat of the present disclosure, the headrest is installed so as to be deformable or movably via a retaining mechanism, so that when the vehicle is crashed and the child's head is tilted forward due to the collision, the headrest also tilts forward, and thus the distance between the neck and the vehicle's seat belt remains the same as the distance when the vehicle's seat belt is not in a crash, thereby greatly reducing the twisting of the vehicle's seat belt against the child's neck, and improving the comfort and safety of the child seat.

[0216] 9. The present disclosure solves the problems of misusing 3-way or 5-way fasteners in booster use mode, and misusing vehicle seat belts in harness use mode.

[0217] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any general modifications, uses, or adaptations of the present disclosure in accordance with the principles of the present disclosure, including departures from the present disclosure in the known manner or custom of the art to which the disclosure pertains. It is intended that the specification and examples be treated as exemplary only, with the following claims indicating the true scope and spirit of the present disclosure. Although the present disclosure has been described with reference to exemplary embodiments, the terms used are illustrative and not limiting. Since the present disclosure can be realized in various forms without departing from the spirit and substance of the present disclosure, it should be understood that the above-described embodiments should not be limited to the above-described details, but should be interpreted as broadly as possible within the scope defined in the claims. Therefore, all modifications that fall within the scope of the claims or their equivalents should be covered by the claims. [Explanation of symbols]

[0218] 100 Child Seat 1 Base 10. Housing 20 Base bracket 201 seats 210 First slide groove 230 Slide adjustment slot 240 Rotation limiting groove 250 Base bracket connecting rod 260 Connection hole 280 Limited groove 30 Anchor Assembly 310 pivot shaft 320 Slide section 330 Connection 340 Reset element 350 Reinforcement element 351 Lock hole 360 Connecting Rod 370 Connecting Rod 40 Press Restriction Block 410 Pivot hole 420 Second slide groove 430 Limited hole 50 Telescopic adjustment assembly 510 Telescopic adjustment handle 511 Recess 520 Linkage Arm 521 Pivot shaft 530 Lock pin 2 Seat body 1S Child seat 10S Headrest 12S Headrest bracket 14S Headrest body 141S Backrest 142S Side Wing 16S Guider 20S seat body 22S Backrest part 23S Backrest Plate 24S seat part 26S Pivot hole 28S Restriction Ring 30S base 40S retention mechanism 431S Restriction Block 42S pivot shaft 44S Fixed seat 441S perforation 46S Restriction Rod 461S Insertion hole 48S Restricted Shoot 49S Elastic element 100T Safety Seat 110T seat body 111T Crotch belt buckle receiving device 111aT Restriction Column 111bT aperture 111cT notch 111dT Elastic Finger 111eT receiving cover 111fT Receiving slot 111gT Receiving cover hinge shaft 112T Trigger 112aT First spring 112bT limit screw 112cT Slide Slot 112dT fixed column 112eT trigger end 113T Link 114T hook 115T hinge hole 116T fixed boss 120T crotch belt buckle 130T Headrest 140T Headrest Bracket 150T Limiting Device 151T Elastic catch 152T Limit pin 153T Upper Step Limit 154T Lower step limit 155T Driving member 155aT Drive Shot 155bT Second spring 155cT fixed hook 155dT Limited Slot 155eT fixed slot 156T Fixed cover 156aT fixed lug 157T Pin 157bT limited hole 160T Shoulder belt perforation 161T Shoulder belt 162T Shoulder belt buckle 170T locking member 171T Adjustment belt 180T seat part 190T Backrest

Claims

1. 1. A base for a child seat, comprising: The base includes a housing, a base bracket, and an anchor assembly. The base bracket is accommodated within the housing, The anchor assembly is telescopically and rotatably connected to the base bracket and extends at least partially from the housing. A base characterized by:

2. The anchor assembly includes a pivot shaft, and a first slide groove is formed in the base bracket, and the pivot shaft is slidably disposed in the first slide groove to form a pivot point.

2. The base according to claim 1 .

3. The anchor assembly further includes a connecting portion, the connecting portion being capable of being anchored to a fixed rod of a vehicle seat to form an anchor point.

3. The base according to claim 2 .

4. The anchor assembly further includes a slide portion, the pivot shaft is located at one end of the slide portion, and the connecting portion is fixedly connected to the other end of the slide portion to define a distance between the pivot point and the anchor point.

4. The base according to claim 3.

5. The sliding portion includes a reinforcing element fixedly connected to the sliding portion.

5. The base according to claim 4.

6. The connection is an ISOFIX fixing element A base according to any one of claims 3 to 5.

7. The base further includes a press limit block and a reset element. the press limit block is rotatably connected to the base bracket; The reset element is connected to the base bracket and the press limit block and holds the press limit block applying a reset force. A base according to any one of claims 1 to 6.

8. The base bracket is formed with a limiting groove for limiting the rotation angle of the press limiting block.

8. The base according to claim 7.

9. The press limiting block includes a limiting hole defined within the range of the limiting groove.

9. The base according to claim 8.

10. The press limiting block includes a second slide groove, the anchor assembly includes a connecting rod, the base bracket includes a rotation limiting groove, and the connecting rod passes through the second slide groove and the rotation limiting groove. A base according to any one of claims 7 to 9.

11. The press limiting block and the anchor assembly are located on opposite sides of the rotation limiting groove.

11. The base according to claim 10.

12. The base bracket includes two press limiting blocks and two anchor assemblies, the base bracket includes two rotation limiting grooves, each of the two press limiting blocks includes a second slide groove, and the two anchor assemblies are connected through a connecting rod, the connecting rod passes through the two second slide grooves and the two rotation limiting grooves. A base according to any one of claims 7 to 11.

13. The base bracket includes two press limiting blocks and two anchor assemblies, the base bracket includes two rotation limiting grooves, each of the two press limiting blocks includes a second slide groove, and each of the two anchor assemblies includes a connecting rod, each connecting rod passing through one of the second slide grooves and one of the rotation limiting grooves. A base according to any one of claims 7 to 12.

14. The direction in which the anchor assembly extends from the housing is defined as a rearward direction, the rotation-limiting groove is positioned in a front-to-back direction, and the size of the rotation-limiting groove increases gradually from front to back. A base according to any one of claims 10 to 13.

15. The base further includes a telescoping adjustment assembly, the anchor assembly includes a plurality of locking holes, and the telescoping adjustment assembly selectively engages one of the locking holes. A base according to any one of the preceding claims.

16. The telescopic adjustment assembly includes a telescopic adjustment handle, a linkage arm, and a lock pin. The telescopic adjustment handle is connected to the lock pin via the linkage arm, and the lock pin is disengaged from one of the lock holes by moving the telescopic adjustment handle.

16. The base according to claim 15.

17. At least a portion of the telescopic adjustment handle is exposed to the housing.

17. The base according to claim 16.

18. The linkage arm is formed in an L shape.

18. A base according to claim 16 or 17.

19. One end of the linkage arm is connected to the lock pin, and the other end of the linkage arm is rotatably connected to the telescopic adjustment handle, and the linkage arm is rotatable about a portion between the one end and the other end.

20. The base according to claim 18 .

20. The telescoping adjustment assembly further includes a reset element that tends to engage the locking pin with one of the locking holes. A base according to any one of claims 16 to 19.

21. The base has two anchor assemblies, and a connecting rod is formed between the two anchor assemblies to maintain synchronous movement of the two anchor assemblies. A base according to any one of the preceding claims.

22. A base including a housing, a base bracket, and an anchor assembly, The housing encloses a space; The base bracket is provided in the space and forms a first slide groove, The anchor assembly has a pivot shaft that is positioned in the first slide groove to form a pivot point. A base characterized by:

23. The anchor assembly has a horizontal state and an inclined state, and when in the horizontal state, the anchor assembly is parallel to a bottom surface of the housing, and when in the inclined state, the anchor assembly forms an angle with the bottom surface of the housing.

23. The base according to claim 22.

24. The anchor assembly has an extended position and a retracted position, the anchor assembly extending further into the housing in the extended position than in the retracted position.

24. The base according to claim 23.

25. The base bracket includes two symmetrical seats, and a base bracket connecting rod is formed between the two seats to maintain a fixed distance between the two seats.

25. The base according to claim 24.

26. The base includes two anchor assemblies, each of the two seats forms one of two first slide grooves, and the pivot shafts of the two anchor assemblies are located in one of the two first slide grooves.

26. The base according to claim 25.

27. The base further includes two press limiting blocks rotatably connected to the two seats of the base bracket, respectively, and each of the two press limiting blocks applies a restoring force to one of the two anchor assemblies so as to tend to maintain each of the two anchor assemblies in a horizontal state.

27. The base of claim 26.

28. Each of the two anchor assemblies includes a reinforcing element, a portion of which extends vertically upward and is formed on a side of the sheet opposite the press limit block, the reinforcing element being formed as a sheet.

28. The base according to claim 27.

29. Each of the seats of the base bracket includes a rotation-limiting groove, and a connecting rod passes through the rotation-limiting groove of each of the seats and is connected to the reinforcing elements of the two anchor assemblies.

29. The base of claim 28.

30. A second slide groove is formed in each of the two press limiting blocks, and the connecting rod passes through the second slide grooves of the two press limiting blocks.

30. The base of claim 29.

31. Each of the sheets of the base bracket includes a rotation-limiting groove, and each of the two connecting rods passes through the rotation-limiting groove of one of the two sheets and is connected to the reinforcing element of one of the two anchor assemblies. A base according to any one of claims 28 to 30.

32. Each of the two press limiting blocks is further provided with a second slide groove, and each of the two connecting rods passes through the second slide groove of one of the two press limiting blocks.

32. The base of claim 31 .

33. A plurality of locking holes are formed in each of the reinforcing elements, and the base further includes a telescopic adjustment assembly including two locking pins, each of which is operably inserted into one of the plurality of locking holes of each of the reinforcing elements, thereby fixing the two anchor assemblies in either the extended position, the retracted position, or one or more other positions between the extended position and the retracted position. A base according to any one of claims 28 to 32.

34. A connecting rod is formed between the two anchor assemblies to maintain synchronous telescopic motion of the two anchor assemblies.

34. The base of claim 33.

35. The telescoping adjustment assembly includes a telescoping adjustment handle, the telescoping adjustment handle operable to simultaneously disengage the two locking pins from the corresponding locking holes.

35. A base according to claim 33 or 34.

36. The telescopic adjustment handle extends at least partially from the housing, or the telescopic adjustment handle is exposed at least partially from a bottom of the housing.

36. The base of claim 35.

37. The telescopic adjustment handle is provided with a recess recessed into the space.

37. A base according to claim 35 or 36.

38. The base according to any one of claims 1 to 37, a seat body positioned on the base; A child seat characterized by the above.

39. The seat is rotatable relative to the base.

39. The child seat of claim 38.

40. A slide adjustment slot is formed in the base bracket of the base, and a portion of the seat body is positioned in the slide adjustment slot, so that the seat body can slide relative to the base.

40. A child seat as claimed in claim 38 or 39.

41. A seat including a seat body, a headrest, and a retaining mechanism, The seat body includes a backrest portion, and the backrest portion includes a backrest plate. The headrest is provided on an upper portion of the seat body, and includes a headrest bracket and a headrest body provided on the headrest bracket, the headrest bracket being connected to the backrest plate, The holding mechanism prevents the headrest from tilting forward when the headrest is subjected to an external impact. A sheet characterized by:

42. The headrest moves up and down relative to the backrest portion to adjust the position of the headrest, and the holding mechanism limits the displacement of the headrest in the front-rear and left-right directions.

42. The sheet of claim 41.

43. A limiting fixing point between the headrest bracket and the backrest plate is provided below the central portion of the headrest bracket along the longitudinal direction.

43. The sheet of claim 42.

44. The headrest includes a guider provided at the lower end of the headrest body, and the vertical distance between the lower edge of the internal opening of the guider and the upper end of the limit fixing point is 110 mm or more.

44. The sheet of claim 43.

45. The retaining mechanism includes at least one limiting block provided on the headrest bracket, the limiting block being provided below a central portion of the headrest bracket along a longitudinal direction, and at least one guide rail is provided on the backrest plate corresponding to the limiting block, the limiting block sliding within the guide rail and being provided below the central portion of the headrest bracket along the longitudinal direction. The sheet according to any one of claims 41 to 44.

46. The holding mechanism includes two limiting blocks provided on both sides of the headrest bracket, the limiting blocks are provided below the center portion of the headrest bracket along the vertical direction, and two guide rails are provided on both sides of the backrest plate corresponding to the limiting blocks, each of the limiting blocks slides on one of the guide rails, and the limiting blocks are provided below the center portion of the headrest bracket along the vertical direction. The sheet according to any one of claims 41 to 45.

47. The holding mechanism includes two guide rails provided on both sides of the headrest bracket, and two limiting blocks are provided on both sides of the backrest plate corresponding to the guide rails, respectively, the guide rails are provided below the central portion of the headrest bracket along the vertical direction, and each of the limiting blocks slides on one of the guide rails. The sheet according to any one of claims 41 to 46.

48. The headrest includes at least one guider provided at the lower end of the headrest body, and the vertical distance between the lower edge of the internal opening of the guider and the upper end of the corresponding limit block is 110 mm or more.

48. The sheet according to any one of claims 45 to 47.

49. The retaining mechanism allows the backrest plate to tilt forward when subjected to an external impact force, The holding mechanism includes a rotation mechanism and a limiting mechanism. The rotation mechanism rotatably connects the backrest plate to the seat body via a lower end of the backrest plate, The limiting mechanism holds the backrest plate in a first state when the backrest plate is not subjected to an external impact, and tilts the backrest plate in a second state when the backrest plate is subjected to an external impact. The sheet according to any one of claims 41 to 47.

50. The rotation mechanism includes a pivot shaft that passes through a lower end of the backrest plate of the seat and is connected at both sides to pivot holes in the seat body of the seat.

50. The sheet of claim 49.

51. The limiting mechanism includes a fixed sheet, a limiting rod, a limiting chute, and an elastic element; The fixed sheet is fixed to the back surface of the backrest plate and has perforations. The limiting rod is connected to the backrest plate, the headrest and the seat body through the hole on the seat body and the fixed seat, The limiting chute is provided on the seat body, and the limiting rod slides within the limiting chute; The elastic element is disposed between the seat body and the limiting rod.

51. A sheet according to claim 49 or 50.

52. A limiting ring is provided on the seat body, and the elastic element is sleeved in the limiting ring to position the elastic element in the radial direction.

52. The sheet of claim 51.

53. The elastic element is a spring, an aluminum honeycomb plate, an elastic sheet, an elastic plastic body, or an EPS buffer.

53. A sheet according to claim 51 or 52.

54. The limiting rod has an insertion hole at each end, and a pin is inserted into the insertion hole to limit the both ends of the limiting rod.

54. The sheet according to any one of claims 51 to 53.

55. The seat body is provided with an opening through which the fixing sheet passes. A sheet according to any one of claims 51 to 54.

56. A retention mechanism comprising: The retaining mechanism is attached to a seat and can tilt a headrest of the seat forward when the seat is subjected to an impact of an external force; The holding mechanism includes a pivot shaft, a fixed seat, a limiting rod, and a limiting chute; The pivot shaft passes through a lower end of the backrest plate of the seat and is connected to pivot holes on both sides of a seat body of the seat, The fixed sheet is fixed to the back surface of the backrest plate and has perforations. The limiting rod is connected to the backrest plate, the headrest and the seat body through the perforations of the seat body and the fixed seat, The limiting chute is provided on the seat body, and the limiting rod slides within the limiting chute. A holding mechanism characterized by:

57. The holding mechanism further includes an elastic element provided between the seat body and the limiting rod, the elastic element tending to push the limiting rod in a direction away from the seat body in a normal state.

57. The retention mechanism of claim 56.

58. The seat body includes a limiting ring, and the elastic element is sleeved in the limiting ring to position the elastic element in the radial direction.

58. The retention mechanism of claim 57.

59. The elastic element is a spring, an aluminum honeycomb plate, an elastic sheet, an elastic plastic body, or an EPS buffer.

59. A retention mechanism according to claim 57 or 58.

60. Each of the two ends of the limiting rod has an insertion hole, and a pin is inserted into the insertion hole to limit each of the two ends of the limiting rod. A retention mechanism according to any one of claims 56 to 59.

61. The seat body is provided with an opening for the fixing sheet to pass through the seat body. A retention mechanism according to any one of claims 56 to 60.

62. A seat including a base, a seat body, and a headrest, The seat body is provided on the base and includes a backrest portion, the backrest portion includes a backrest plate, The headrest is provided on an upper portion of the seat body, and includes a headrest bracket and a headrest body provided on the headrest bracket, The seat further includes the retention mechanism of claim 56. A sheet characterized by:

63. A crotch belt buckle receiving device provided in a seat portion of a seat body of a child seat, The crotch belt buckle receiving device includes a receiving slot and a trigger, The receiving slot is used to receive a crotch belt buckle; The trigger is provided in the receiving slot and can move between an extended position and a contracted position relative to an inner wall of the receiving slot, and the trigger is connected to a limiting device via a link, whereby, when the crotch belt buckle is received in the receiving slot, the trigger is in the contracted position and the limiting device limits a lower limit stroke of the headrest of the child seat relative to the backrest of the seat body, and when the crotch belt buckle is not received in the receiving slot, the trigger is in the extended position and the limiting device limits an upper limit stroke of the headrest relative to the backrest. A crotch belt buckle receiving device.

64. A first spring is disposed within the trigger, and the first spring constantly exerts a force for the trigger to move from the contracted position to the extended position, so that the trigger moves to the extended position when the crotch belt buckle is released.

64. The crotch belt buckle receiving device according to claim 63.

65. An opening is provided in a wall of the receiving slot corresponding to the trigger, and a trigger end of the trigger extends through the opening into the receiving slot.

65. The crotch belt buckle receiving device according to claim 64.

66. The trigger has a slide slot and a limiting column is disposed outside the receiving slot, the limiting column extending into the slide slot to limit the trigger.

66. The crotch belt buckle receiving device according to claim 64 or 65.

67. The first spring is disposed within the slide slot and has one end restrained by the trigger end and the other end restrained by the restraining column. The crotch belt buckle receiving device according to claim 66.

68. The trigger is provided with a fixed column for fixing one end of the link, and the receiving slot is provided with a notch for avoiding the fixed column. The crotch belt buckle receiving device according to claim 67.

69. Elastic fingers for fixing the crotch belt buckle are provided on both sides of the inner wall of the receiving slot. The crotch belt buckle receiving device according to any one of claims 63 to 68.

70. a receiving cover for covering the opening of the receiving slot, the receiving cover being hinged to the seat portion to ensure the flatness of the surface of the seat portion; The crotch belt buckle receiving device according to any one of claims 63 to 69.

71. The link is a steel wire or a flexible rope that provides the link between the trigger and the limiting device. The crotch belt buckle receiving device according to any one of claims 63 to 70.

72. A limit screw is connected to the terminal of the limit column, and the width of the head of the limit screw is larger than the slide slot. The crotch belt buckle receiving device according to any one of claims 66 to 71.

73. The limiting device includes a drive member, a limiting pin, an elastic catch, an upper step, and a lower step, the drive member is attached to the backrest and is movable relative to the backrest, the limiting pin is attached to the backrest and is movable relative to the drive member, the elastic catch is attached to the backrest, the limiting pin is inserted into the elastic catch, and the upper step and the lower step are provided on the headrest. The crotch belt buckle receiving device according to any one of claims 63 to 72.

74. The other end of the link is fixed to the drive member. The crotch belt buckle receiving device according to claim 73.

75. A second spring is connected between the backrest and the drive member, and the second spring constantly exerts a force on the drive member to pull the headrest.

75. The crotch belt buckle receiving device according to claim 74.

76. The backrest is provided with a hook for fixing one end of the second spring, and the driving member is provided with a fixing hook for fixing the other end of the second spring.

76. The crotch belt buckle receiving device according to claim 75.

77. The backrest further includes a fixed cover that is fixed to the backrest and covers the driving member, the driving member being movable within the fixed cover.

77. The crotch belt buckle receiving device according to claim 75 or 76.

78. One of the driving member and the fixed cover is provided with a limiting slot extending along the moving direction of the driving member, and the other of the driving member and the fixed cover is provided with a limiting hole, and the limiting device includes a pin, which is inserted into the limiting hole and the limiting slot and is movable along the limiting slot.

78. The crotch belt buckle receiving device according to claim 77.

79. The driving member is provided with a driving chute, the driving chute extends in a direction not parallel to the moving direction of the driving member, one end of the limiting pin is connected to the driving chute, and the limiting pin is movable relative to the driving member along the driving chute. The crotch belt buckle receiving device according to any one of claims 73 to 78.

80. When the trigger is in the contracted position, the drive member moves in a direction approaching the seat portion by the action of the link, and the limit pin moves relative to the drive chute and extends into the backrest, abutting against the underside of the lower limit step to prevent the headrest from moving downward relative to the backrest, When the trigger is in the extended position, the drive member moves away from the seat portion, the limit pin moves away from the backrest relative to the drive chute, and the resilient catch abuts against an upper side of the upper limit step to prevent the headrest from moving upward relative to the backrest.

80. The crotch belt buckle receiving device according to claim 79.

81. A child seat including a seat body and a headrest, The seat portion of the seat body is provided with the crotch belt buckle receiving device according to any one of claims 63 to 80. A child seat characterized by the above.

82. The child seat has a band use mode and a pull-up use mode, and in the band use mode, the crotch belt buckle is not received in the receiving slot, and in the pull-up use mode, the crotch belt buckle is received in the receiving slot.

82. A child seat as claimed in claim 81.

83. Further comprising a locking member for controlling locking or unlocking of the adjustment belt, a headrest bracket of the headrest is provided with a shoulder belt hole through which the shoulder belt passes, one end of the shoulder belt exposed from the shoulder belt hole is connected to a shoulder belt buckle, and the other end of the shoulder belt is connected to one end of the adjustment belt that is not exposed from the lock member; The crotch belt buckle is connected to the seat portion via a braided strap.

83. A child seat as claimed in claim 82.

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