Safety seat head restraints and safety seats

Abstract

The present invention relates to a safety seat head protection device and a safety seat, wherein the safety seat head protection device comprises a first limiter and a second limiter, wherein the first limiter is arranged at the front side of the head of an occupant in the safety seat when the occupant is in a normal sitting position and has a gap between the first limiter and the occupant's head, so as to limit the forward displacement of the occupant; the second limiter is arranged at the top of the occupant's head when the occupant is in a normal sitting position and has a gap between the first limiter and the occupant's head, and the distance between the first limiter and the seat plate of the safety seat in the height direction is kept fixed, and the distance between the first limiter and the seat plate of the safety seat in the height direction is adjustable. The safety seat comprises a safety seat head protection device. The first limiter and the second limiter of the present invention both have gaps between the occupant's head and the occupant's free movement, and will not limit the occupant's free movement; the distance between the first limiter and the second limiter in the height direction is kept fixed, so as to reduce the difficulty of height adjustment.

Description

Technical Field

[0001] The invention relates to the technical field of safety seats, in particular to a safety seat head protection device and a safety seat. Background Art

[0002] At present, children are usually restrained in child safety seats when riding in a car. Safety seats are equipped with headrests for children to lean on and can also be used to protect children's heads. Headrests are generally three-sided wraparound, which can protect the back of the child's head and the sides of the head, but cannot protect the top and front of the child's head. In the event of unexpected situations such as road bumps or sudden braking, the top and front of the child's head are not protected, posing a safety hazard.

[0003] In the related art, a head guard is provided on the safety seat. Although it can protect the child's head in some cases, the head guard is made of hard material and is tightly clamped around the child's head, which greatly restricts the child's free movement and provides a bad experience.

[0004] Moreover, the upper body heights of different children are different. If the height of the head guard is set to a fixed height, it cannot adapt to the different heights of different children. If the height of the head guard is set to be adjustable, it will also bring new problems. For example, the user cannot accurately grasp the height difference between the head guard and the child's head when adjusting the height of the head guard. If the height difference is too large, the protection of the head will fail. If the height difference is too small, the guard may come into contact with the eyes when the child leans forward, squeezing the eyes and causing eye damage.

[0005] It should be noted that the information disclosed in the background technology section of the present invention is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes prior art already known to those skilled in the art. Summary of the invention

[0006] The purpose of the present invention is to provide a safety seat head protection device and a safety seat, which can effectively protect the head safety of the occupant and will not restrict the free movement of the occupant.

[0007] To achieve the above object, the present invention provides a safety seat head protection device, comprising:

[0008] A first limiter, which is arranged in front of the head of the occupant in the safety seat when the occupant is in a normal sitting position and has a gap between the occupant's head and the first limiter, and is used to limit the forward displacement of the occupant; and

[0009] The second limiting member is arranged on the top of the head of the occupant when the occupant is in a normal sitting position and has a gap between the occupant's head, keeps a fixed distance from the first limiting member in the height direction, and the distance between the second limiting member and the seat plate of the safety seat in the height direction is adjustable.

[0010] In some embodiments, the safety seat head protection device further includes a headrest, the second limiting member is mounted on the headrest, and the first limiting member is fixedly connected to the second limiting member.

[0011] In some embodiments, the safety seat head protection device further includes a headrest, and the first limiting member and the second limiting member are respectively mounted on the headrest.

[0012] In some embodiments, the distance between the headrest and the seat pan in the height direction is adjustable.

[0013] In some embodiments, the front-rear position of the second limiting member relative to the headrest is adjustable.

[0014] In some embodiments, the safety seat head protection device further includes a support frame and a first adjustment mechanism, the support frame is connected between the second limit member and the headrest, and the first adjustment mechanism is used to adjust the connection position of the support frame and the headrest in the front-rear direction.

[0015] In some embodiments, the first adjustment mechanism includes an adjustment seat and a mounting plate, the adjustment seat is connected to the support frame, the mounting plate is installed on the headrest, and the mounting plate is provided with at least two matching parts arranged in the front and rear directions, and the adjustment seat or the support frame is connected to the headrest through the matching parts.

[0016] In some embodiments, a first hole is provided on the adjustment seat, the support frame passes through the first hole and is exposed from the bottom of the adjustment seat, the matching portion includes a mounting hole, and the exposed portion of the support frame is inserted into the mounting hole to achieve the connection between the support frame and the headrest.

[0017] In some embodiments, the support frame includes at least two support bars, the number of the first holes is the same as the number of the support bars, each support bar is inserted into the corresponding first hole, and at least one support bar is exposed from the bottom of the adjustment seat.

[0018] In some embodiments, the support frame is provided with an elastic buckle and the adjustment seat is provided with a second hole. The elastic buckle is inserted into the second hole under the action of elastic force to achieve the connection between the support frame and the adjustment seat, and is disengaged from the second hole under the action of external force to disconnect the support and the adjustment seat.

[0019] In some embodiments, the second stop member has a first position for protecting an occupant in a normal sitting position and a second position for facilitating the occupant to enter or leave the safety seat.

[0020] In some embodiments, the second position is located above and rearward of the first position.

[0021] In some embodiments, a locking hole is provided on the headrest, the adjustment seat includes a seat body, a locking block and a connecting section, the connecting section is connected between the seat body and the locking block, the connecting section is inserted into the locking hole, the seat body and the locking block are respectively located on the outer side and the inner side of the headrest, and the locking hole is configured so that the second limiting member has a first position for protecting the occupant in a normal sitting position and a second position for facilitating the occupant to enter or leave the safety seat.

[0022] In some embodiments, the locking hole includes a first locking hole, a second locking hole and a third locking hole. The first locking hole is arranged above the mounting plate. The first locking hole is used to limit the adjustment seat when the first adjustment mechanism adjusts the front and rear position of the second limiting member relative to the headrest. The third locking hole is arranged above the first locking hole, and the third locking hole includes a locking portion that limits the movement of the adjustment seat relative to the headrest. The second locking hole connects the first locking hole and the third locking hole.

[0023] In some embodiments, a rib is provided on the side of the headrest for blocking the block, and the rib is used to prevent the block from moving upward relative to the headrest when the support frame and the headrest are in a connected state, and when the support frame and the headrest are in a disconnected state, the connecting section can rotate at the connection between the first clamping hole and the second clamping hole to allow the block to avoid the rib.

[0024] In some embodiments, the first limiting member and / or the second limiting member includes a limiting plate, the limiting plate includes a cylindrical surface adapted to the shape of the occupant's head, and the limiting plate is provided with air holes.

[0025] In some embodiments, the front-rear position of the first limiting member relative to the headrest is adjustable.

[0026] In some embodiments, the safety seat head protection device further includes a connecting block and a second adjusting mechanism, wherein the connecting block is connected between the first stopper and the headrest, and the second adjusting mechanism is used to adjust the connection position of the connecting block and the headrest in the front-rear direction.

[0027] In some embodiments, the first limiting member is detachably connected to the connecting block.

[0028] In some embodiments, the second adjustment mechanism includes a locking rod and a locking frame. The locking frame is arranged on the headrest, and at least one locking hole is provided on the locking frame. The locking rod is arranged on the side of the connecting block away from the first limiting member. The locking rod is inserted into or disengaged from the locking hole to achieve relative locking or unlocking of the connecting block and the locking frame. The connecting block slides relative to the locking frame to adjust the front and rear position of the connecting block relative to the locking frame.

[0029] In some embodiments, the second adjustment mechanism also includes a driving block, which is provided with a limiting hole, and the locking rod includes a first locking part and a second locking part, the first locking part is inserted into the limiting hole, and the second locking part is inserted into or disengaged from the locking hole, and the driving block slides relative to the connecting block to drive the locking rod to insert into or disengage from the locking hole through the limiting hole.

[0030] To achieve the above object, the present invention also provides a safety seat, comprising the above safety seat head protection device.

[0031] Based on the above technical scheme, the head protection device in the embodiment of the present invention includes a first limit member and a second limit member, and there is a gap between the first limit member and the second limit member and the head of the occupant, so the free movement of the occupant will not be restricted, and the user experience is better; moreover, the distance between the first limit member and the second limit member in the height direction remains fixed, and the distance between the second limit member and the seat plate in the height direction is adjustable, so that the distance between the first limit member and the seat plate can be adjusted in the height direction by adjusting the distance between the second limit member and the seat plate, and the second limit member is arranged at the top of the occupant's head, and the distance between the second limit member and the top of the head can be used as a reference for adjusting the distance between the second limit member and the first limit member and the seat plate, which reduces the difficulty of height adjustment and ensures that the first limit member will neither fail to lose its protective effect due to being too high, nor hurt the occupant's eyes due to being too low, and has better safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 The figure is a schematic structural diagram of an embodiment of a safety seat head protection device of the present invention.

[0034] Figure 2 The figure is a side view of an embodiment of a safety seat head protection device of the present invention.

[0035] Figure 3 The figure is a schematic structural diagram of a mounting plate in one embodiment of a safety seat head protection device of the present invention.

[0036] Figure 4 The figure is a schematic structural diagram of a locking hole in an embodiment of a safety seat head protection device of the present invention.

[0037] Figure 5 The figure is a schematic diagram of the structure of an elastic buckle in an embodiment of a safety seat head protection device of the present invention.

[0038] Figure 6 The figure is a schematic structural diagram of an adjustment seat in one embodiment of a safety seat head protection device of the present invention.

[0039] Figure 7 This is a schematic diagram of another angle structure of the adjustment seat in one embodiment of the safety seat head protection device of the present invention.

[0040] Figure 8 The figure is a schematic diagram of the structure of a support bar in one embodiment of a safety seat head protection device of the present invention.

[0041] Fig. 9 The figure is a schematic diagram of the connection structure between the support frame and the adjustment seat in one embodiment of the safety seat head protection device of the present invention.

[0042] Fig.10 The figure is a schematic diagram of the relative position relationship between the seat body and the headrest in one embodiment of the safety seat head protection device of the present invention.

[0043] Fig.11 The figure is a schematic diagram of the relative position relationship between the clamping block and the headrest in one embodiment of the safety seat head protection device of the present invention.

[0044] Fig.12 The figure is a schematic diagram of the cooperation between the adjustment seat and the locking hole in one embodiment of the safety seat head protection device of the present invention.

[0045] Fig.13 This is a schematic structural diagram of a safety seat head protection device according to an embodiment of the present invention in which the second limiting member is located in the final position.

[0046] Fig.14 This is a schematic structural diagram of an embodiment of a safety seat head protection device of the present invention in which the second limiting member is located at the frontmost position.

[0047] Fig.15 This is a schematic structural diagram of a block being blocked by a rib in one embodiment of a safety seat head protection device of the present invention.

[0048] Fig.16 This is a schematic diagram of the structure in which a clamping block avoids a rib in one embodiment of a safety seat head protection device of the present invention.

[0049] Fig.17 The diagram is a schematic structural diagram of an embodiment of a safety seat head protection device of the present invention when the second limiter leaves the first clamping hole and rises.

[0050] Fig.18 It is a schematic structural diagram of a safety seat head protection device in one embodiment of the present invention when the second limit member rises to the third locking hole.

[0051] Fig.19 The figure is a schematic structural diagram of a head protection device for a safety seat according to an embodiment of the present invention when the second limiting member is engaged with the engaging portion.

[0052] Fig. 20 The figure is a schematic structural diagram of an embodiment of a safety seat head protection device of the present invention installed on a safety seat.

[0053] Fig.21It is an exploded view of another embodiment of the safety seat head protection device of the present invention.

[0054] Fig. 22 The figure is a side view of another embodiment of a safety seat head protection device of the present invention.

[0055] Fig.23 This is a schematic structural diagram of another embodiment of a safety seat head protection device according to another angle of the present invention.

[0056] Fig.24 This is a schematic structural diagram of another embodiment of the safety seat head protection device of the present invention in which a lock frame is installed on a headrest.

[0057] Fig.25 The figure is a schematic structural diagram of a lock frame in another embodiment of a safety seat head protection device of the present invention.

[0058] Fig.26 It is a schematic structural diagram of the cooperation between the connecting block, the locking rod, the driving block and the protective cover in another embodiment of the safety seat head protection device of the present invention.

[0059] Fig. 27 This is a schematic structural diagram of another embodiment of the safety seat head protection device of the present invention in which the second locking portion of the locking rod is in an extended state.

[0060] Fig.28 This is a schematic structural diagram of another embodiment of the safety seat head protection device of the present invention in which the second locking portion of the locking rod is in a retracted state.

[0061] Fig.29 This is a schematic structural diagram of another embodiment of the safety seat head protection device of the present invention in which the connecting block is locked at the front end.

[0062] Fig.30 This is a schematic structural diagram of another embodiment of the safety seat head protection device of the present invention in which the connecting block is locked at the rearmost end.

[0063] Fig.31 The figure is a schematic diagram of the installation structure of the first limiting member in another embodiment of the safety seat head protection device of the present invention.

[0064] Fig.32 This is a schematic structural diagram of a connecting block in another embodiment of a safety seat head protection device of the present invention.

[0065] Fig.33 This is a schematic structural diagram of the cooperation between the connecting block and the first limiting member in another embodiment of the safety seat head protection device of the present invention.

[0066] Fig.34 This is a schematic structural diagram of another embodiment of the safety seat head protection device of the present invention after the first limit member is connected to the connecting block.

[0067] Fig.35 FIG. 1 is a schematic structural diagram of a second position-limiting member in another embodiment of a safety seat head protection device of the present invention.

[0068] In the figure:

[0069] 1. 1′, first stopper; 2. 2′, second stopper; 3. headrest; 4. support frame; 5. adjustment seat; 6. mounting plate; 7. backrest; 8. positioning hole; 9. seat plate;

[0070] 31. tendons;

[0071] 41. Support bar; 42. Elastic buckle;

[0072] 51, seat body; 52, clamping block; 53, connecting section; 511, first hole; 512, second hole;

[0073] 61. Mounting hole;

[0074] 81. First clamping hole; 82. Second clamping hole; 83. Third clamping hole; 831. Clamping portion.

[0075] 10. Connecting block; 20. Locking rod; 30. Locking frame; 40. Driving block; 50. Protective cover; 60. Spring; 70. Connecting rod; 80. Support rod; 90. Connecting ring;

[0076] 101, third hole; 11', clamping head; 201, first locking part; 202, second locking part; 301, locking hole; 401, limiting hole. DETAILED DESCRIPTION

[0077] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0078] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0079] like Figure 1 and Figure 2 As shown, in one embodiment of the safety seat head protection device provided by the present invention, the head protection device includes a first limiter 1 and a second limiter 2. The first limiter 1 is arranged in front of the head of the occupant sitting in the safety seat when the occupant is in a normal sitting position and has a gap between the head of the occupant. The first limiter 1 is used to limit the forward displacement of the occupant. The second limiter 2 is arranged on the top of the head of the occupant when the occupant is in a normal sitting position and has a gap between the head of the occupant. The distance between the second limiter 2 and the first limiter 1 in the height direction remains fixed, and the distance between the second limiter 2 and the seat plate 9 of the safety seat in the height direction is adjustable.

[0080] The seat plate 9 is a component that supports the entire weight of the occupant. The normal sitting posture refers to the posture of the occupant when sitting on the seat plate 9 normally, and the occupant's head remains upright. When encountering unexpected situations such as road bumps or sudden braking, the occupant may lean forward or backward, and the occupant is in an abnormal sitting posture. When the occupant leans backward, he can be protected by the headrest, and when he leans forward, he can be protected by the first limiter. The second limiter can protect the occupant's head from accidental injuries.

[0081] In the above embodiment, the head protection device includes a first limit member 1 and a second limit member 2, and there is a gap between the first limit member 1 and the second limit member 2 and the head of the occupant, and there is no contact restriction, so the free movement of the occupant is not restricted, and the user experience is better; moreover, the distance between the first limit member 1 and the second limit member 2 in the height direction remains fixed, and the distance between the second limit member 2 and the seat plate 9 in the height direction is adjustable, so that the distance between the first limit member 1 and the seat plate 9 can be adjusted in the height direction by adjusting the distance between the second limit member 2 and the seat plate 9, and the second limit member 2 It is arranged on the top of the occupant's head, and the distance between the second limit member 2 and the top of the head can be used as a reference for adjusting the distance between the second limit member 2 and the first limit member 1 and the seat plate 9. The distance between the second limit member 2 and the top of the head is relatively easy to control. For example, the user can put one hand on the occupant's head, and the second limit member 2 contacts the hand. At this time, the thickness of the hand is used as the distance between the second limit member 2 and the top of the head. Therefore, the difficulty of height adjustment is greatly reduced, ensuring that the first limit member 1 will neither fail to lose its protective effect due to being too high, nor hurt the occupant's eyes due to being too low, and the safety is better.

[0082] The safety seat head protection device also includes a headrest 3. In order to ensure that the first limit member 1 and the second limit member 2 maintain a constant relative distance in the height direction, the first limit member 1 and the second limit member 2 can be installed on the headrest 3 respectively, while keeping the distance between the first limit member 1 and the second limit member 2 in the height direction constant; the second limit member 2 can also be installed on the headrest 3, and the first limit member 1 and the second limit member 2 are fixedly connected, so that the distance between the first limit member 1 and the second limit member 2 in the height direction can also be kept constant. When the height of the second limit member 2 relative to the seat plate 9 is adjusted, the distance between the first limit member 1 and the seat plate 9 is also adjusted, thereby reducing the difficulty of adjusting the height of the first limit member 1.

[0083] The distance between the headrest 3 and the seat plate 9 is adjustable in the height direction. This arrangement can convert the distance adjustment between the first stopper 1 and the second stopper 2 and the seat plate 9 into the height adjustment of the headrest 3 relative to the seat plate 9. If the headrest 3 of the safety seat is already height-adjustable, the configuration of the first adjustment mechanism for realizing the height adjustment of the first stopper 1 and the second stopper 2 can be saved, thereby saving costs.

[0084] Reference below Figures 1 to 17 An embodiment in which the first limiting member 1 and the second limiting member 2 are fixedly connected is introduced.

[0085] The front and rear position of the second stopper 2 relative to the headrest 3 is adjustable. The front and rear here refer to the front and rear sides of the occupant when the occupant enters the safety seat. This arrangement can adapt to the different head circumferences of different children, and can also adapt to the different head circumferences of the same child at different ages. When the head circumference changes, the front and rear position of the first stopper 1 can be adjusted by adjusting the front and rear position of the second stopper 2, thereby ensuring the comfort of the child and the effectiveness of the protective effect of the first stopper 1.

[0086] The safety seat head protection device also includes a support frame 4 and a first adjustment mechanism, wherein the support frame 4 is connected between the second stopper 2 and the headrest 3, and the first adjustment mechanism is used to adjust the connection position of the support frame 4 and the headrest 3 in the front-back direction. The support frame 4 is made of hard material and can support the first stopper 1 and the second stopper 2.

[0087] In other embodiments, the first adjustment mechanism may be configured to adjust the connection position between the support frame 4 and the second limiting member 2 in the front-to-back direction, so that the front-to-back position of the second limiting member 2 relative to the headrest 3 may also be adjustable.

[0088] The first adjustment mechanism includes an adjustment seat 5 and a mounting plate 6. The adjustment seat 5 is connected to the support frame 4. The mounting plate 6 is mounted on the headrest 3. The mounting plate 6 is provided with at least two matching parts arranged in the front-to-back direction. The adjustment seat 5 or the support frame 4 is connected to the headrest 3 through the matching parts. The front-to-back position adjustment of the support frame 4 relative to the headrest 3 can be achieved by connecting the adjustment seat 5 to the headrest 3 through the matching parts, or by connecting the support frame 4 to the headrest 3 through the matching parts.

[0089] like Figure 7 As shown, the adjustment seat 5 is provided with a first hole 511. Figure 8 As shown, the support frame 4 passes through the first hole 511 and emerges from the bottom of the adjustment seat 5. Figure 3 As shown, the mating portion includes a mounting hole 61, such as Fig. 9 As shown, the exposed portion of the support frame 4 is inserted into the mounting hole 61 to achieve the connection between the support frame 4 and the headrest 3 .

[0090] like Figure 8 and Fig. 9 As shown, the support frame 4 includes at least two support bars 41, the number of the first holes 511 is the same as the number of the support bars 41, each support bar 41 is inserted into the corresponding first hole 511, and at least one support bar 41 is exposed from the bottom of the adjustment seat 5. By providing at least two support bars 41, the connection strength between the support frame 4 and the adjustment seat 5 can be increased to ensure the stability of the connection.

[0091] like Figure 5 As shown, the support frame 4 is provided with an elastic buckle 42, and the adjustment seat 5 is provided with a second hole 512. The elastic buckle 42 is inserted into the second hole 512 under the action of elastic force to achieve the connection between the support frame 4 and the adjustment seat 5, and is separated from the second hole 512 under the action of external force to disconnect the support and the adjustment seat 5. This arrangement can achieve quick installation and quick removal of the support frame 4 on the adjustment seat 5, and can also reduce the difficulty of connection, thereby improving the operation efficiency.

[0092] The elastic buckle 42 includes a spring and a card block. Under normal circumstances, under the elastic force of the spring, the card block protrudes from the surface of the support bar 41. When subjected to external force, the spring is compressed and the card block enters the hole of the support bar 41. Therefore, the support bar 41 can be inserted into the seat body 51 of the adjustment seat 5. When reaching the second hole 512, under the action of the spring, the card block moves outward and is stuck in the second hole 512, thereby realizing the connection between the support frame 4 and the adjustment seat 5.

[0093] The second stopper 2 has a first position for protecting the occupant in a normal sitting position and a second position for facilitating the occupant to enter or leave the safety seat. The position of the second stopper 2 on the headrest 3 is adjustable, and switching between the first position and the second position can meet different requirements for clearance when the first stopper 1 is in a working state and when the occupant enters or leaves the safety seat.

[0094] When the second stopper 2 is in the first position, the first stopper 1 enters the working state. At this time, there is a preset safety gap between the first stopper 1 and the second stopper 2 and the occupant's head. When the occupant's head leans forward, the first stopper 1 can protect the front of the occupant's head, and the second stopper 2 is used to protect the top of the occupant's head. When the second stopper 2 is in the second position, in order to allow the occupant to enter or leave the position of the safety seat, there is a greater requirement for the gap between the first stopper 1 and the second stopper 2 and the occupant's head. Increasing the gap between the first stopper 1 and the second stopper 2 and the occupant's head can increase the occupant's activity space and make it easier for the occupant to enter or leave the safety seat.

[0095] The second position is located above and behind the first position. In terms of height, the second position is located above the first position; in terms of front-to-back direction, the second position is located behind the first position. This arrangement can increase the distance between the first limiter 1 and the second limiter 2 and the seat plate 9 when the occupant enters or leaves the safety seat, and move the first limiter 1 and the second limiter 2 backward, making it easier for the occupant to enter and exit the safety seat.

[0096] like Figure 6 and Figure 7 As shown, the adjustment seat 5 includes a seat body 51, a clamping block 52 and a connecting section 53, and the connecting section 53 is connected between the seat body 51 and the clamping block 52. Fig.12 As shown, the headrest 3 is provided with a locking hole 8, and the connecting section 53 is inserted into the locking hole 8, as shown in FIG. Fig.10 As shown, the seat body 51 is located outside the headrest 3. Fig.11 As shown, the block 52 is located on the inner side of the headrest 3, and the locking hole 8 is configured to enable the second stopper 2 to have a first position for protecting the occupant in a normal sitting position and a second position for facilitating the occupant to enter or leave the safety seat. By improving the connection method between the adjustment seat 5 and the headrest 3 and coordinating with the design of the locking hole 8, the switching between the first position and the second position of the second stopper 2 and the first stopper 1 is achieved.

[0097] The block 52 may be disposed on the inner side of the outer wall of the headrest 3 instead of being located at the innermost side of the headrest 3 , so as to prevent the block 52 from being exposed to the outer side of the inner wall of the headrest 3 and preventing the occupant from bumping into it.

[0098] like Figure 4As shown, the locking hole 8 includes a first locking hole 81, a second locking hole 82 and a third locking hole 83. The first locking hole 81 is arranged above the mounting plate 6. The first locking hole 81 is used to limit the adjustment seat 5 when the first adjustment mechanism adjusts the front and rear position of the second limiting member 2 relative to the headrest 3. The third locking hole 83 is arranged above the first locking hole 81, and the third locking hole 83 includes a locking portion 831 for limiting the movement of the adjustment seat 5 relative to the headrest 3. The second locking hole 82 is connected to the first locking hole 81 and the third locking hole 83. By providing the locking portion 831, the second limiting member 2 can be fixed at the second position, ensuring the safety and stability of the second limiting member 2 at the second position.

[0099] like Fig.15 and Fig.16 As shown, a rib 31 is provided on the side of the headrest 3 for blocking the block 52, and the rib 31 is used to prevent the block 52 from moving upward relative to the headrest 3 when the support frame 4 and the headrest 3 are in a connected state, and when the support frame 4 and the headrest 3 are in a disconnected state, the connecting section 53 can rotate at the connection between the first clamping hole 81 and the second clamping hole 82 to avoid the rib 31.

[0100] When the exposed portion of a support strip 41 in the support frame 4 is inserted into the mounting hole 61 so that the support frame 4 and the headrest 3 are in a connected state, the rib 31 can block the block 52 from moving upward relative to the headrest 3, thereby preventing the support frame 4 from moving upward relative to the headrest 3 under conditions such as bumpy roads, thereby ensuring the reliability of the connection between the support frame 4 and the headrest 3.

[0101] When the exposed portion of a support strip 41 in the support frame 4 is separated from the mounting hole 61, the support frame 4 and the headrest 3 are disconnected, and when the adjustment seat 5 needs to be moved upward through the second clamping hole 82, the connecting section 53 can be rotated. After the connecting section 53 rotates, the clamping block 52 is driven to deflect. After the clamping block 52 is deflected, it can avoid the rib 31, so that the adjustment seat 5 can drive the support frame 4 to move upward along the second clamping hole 82.

[0102] In the above-mentioned embodiments, the first limiting member 1 and / or the second limiting member 2 comprises a limiting plate, such as a rubber plate. The plate structure has a higher strength and has a better limiting effect on the head when the head tilts forward.

[0103] The limiting plate includes a cylindrical surface adapted to the shape of the occupant's head, and the cylindrical surface faces the occupant's head. By setting the cylindrical surface, the head can be more closely fitted to the limiting plate when the head contacts the limiting plate, avoiding bumps on the head caused by edges and corners.

[0104] The limiting plate is provided with ventilation holes to prevent the limiting plate from affecting air circulation.

[0105] The following is combined with Figures 1 to 17The overall structure and adjustment process of an embodiment of the safety seat head protection device of the present invention are described as follows:

[0106] like Figure 1 and Figure 2 As shown, the head protection device includes a first stopper 1, a second stopper 2 and a headrest 3. The headrest 3 is mounted on the backrest 7 of the safety seat, and the height of the headrest 3 on the backrest 7 is adjustable. The first stopper 1 is connected to the second stopper 2 as a whole, and the second stopper 2 is mounted on the mounting plate 6 of the headrest 3 through a support frame 4 and an adjustment seat 5.

[0107] When the occupant is in a normal sitting position, the first limiting member 1 is located in front of the occupant's head with a gap therebetween, and the second limiting member 2 is located above the top of the occupant's head with a gap therebetween.

[0108] like Figure 3 As shown, the mounting plate 6 is horizontally welded in the groove of the headrest 3 , and three mounting holes 61 are provided on the mounting plate 6 , and the center line of the three mounting holes 61 extends along the front-rear direction.

[0109] like Figure 4 As shown, the headrest 3 is provided with a positioning hole 8, which is arranged above the mounting plate 6. The positioning hole 8 includes a first positioning hole 81, a second positioning hole 82 and a third positioning hole 83. The length of the first positioning hole 81 in the front-to-back direction is substantially equal to the maximum distance between the three mounting holes 61 on the mounting plate 6. The height of the first positioning hole 81 in the height direction is slightly greater than the height of the connecting section 53 of the adjusting seat 5, so as to limit the movement of the adjusting seat 5 in the height direction when the front-to-back position of the second limiting member 2 relative to the headrest 3 is adjusted. The second positioning hole 82 is connected to the first positioning hole 81 and the third positioning hole 83. The second positioning hole 82 is arranged in the vertical direction, and the width of the second positioning hole 82 in the front-to-back direction is slightly greater than the width of the connecting section 53 of the adjusting seat 5, so as to guide the lifting and lowering of the adjusting seat 5. The third positioning hole 83 is arranged above the first positioning hole 81, and the third positioning hole 83 is arranged in the horizontal direction and extends backward from the top of the second positioning hole 82.

[0110] The third locking hole 83 includes a locking portion 831 for limiting the adjustment seat 5 from moving relative to the headrest 3 . The locking portion 831 is disposed at the rearmost end of the third locking hole 83 and extends downward from the rearmost end.

[0111] The bottom surface of the third locking hole 83 gradually rises from front to back. This arrangement can facilitate the fixation of the adjustment seat 5 and also facilitate the connection section 53 of the adjustment seat 5 to smoothly enter the locking portion 831.

[0112] like Figure 5As shown, the support frame 4 includes two groups, each group includes three support bars 41, and the length of the middle support bar 41 is greater than the length of the support bars 41 on both sides. The side of the middle support bar 41 is provided with an elastic buckle 42.

[0113] like Figure 6 and Figure 7 As shown, the adjustment seat 5 includes a seat body 51, a clamping block 52 and a connecting section 53, wherein the connecting section 53 is connected between the seat body 51 and the clamping block 52. The seat body 51 is provided with three first holes 511 penetrating the top and bottom surfaces, and the axes of the first holes 511 are along the vertical direction. The side of the seat body 51 is provided with a second hole 512.

[0114] like Figure 8 and Fig. 9 As shown, the three support bars 41 are respectively inserted into the three first holes 511 of the adjustment seat 5 , and the middle support bar 41 can be exposed from the middle first hole 511 , and the exposed part is inserted into the mounting hole 61 .

[0115] like Fig.12 As shown, the mounting plate 6 is also used to support the seat body 51 of the adjustment seat 5, and the connecting section 53 is inserted into the locking hole 8. Fig.10 As shown, the seat body 51 is located outside the headrest 3; Fig.11 As shown, the block 52 is located on the inner side of the outer wall of the headrest 3 .

[0116] like Fig.15 As shown, a rib 31 is provided on the inner side of the headrest 3, the rib 31 is close to the side of the second clamping hole 82, the rib 31 is L-shaped, and the short side of the rib 31 faces the clamping block 52. When the exposed part of the support bar 41 is inserted into the middle mounting hole 61, the rib 31 can just prevent the clamping block 52 from moving upward.

[0117] like Fig.16 As shown, when the adjustment seat 5 needs to be lifted, the adjustment seat 5 can be rotated first to deflect the clamping block 52 to avoid the rib 31. The blocking effect is released, and the adjustment seat 5, the support frame 4, the second limit member 2 and the first limit member 1 can move upward along the second clamping hole 82.

[0118] like Fig. 20 The safety seat also includes a backrest and a seat plate 9, the backrest is connected to the seat plate 9, and the headrest 3 is installed on the backrest.

[0119] Before and after adjustment process:

[0120] like Fig.13As shown, the support bar 41 exposed from the bottom of the seat body 51 is inserted into the mounting hole 61 at the rearmost side. If the front-rear position of the first stopper 1 and the second stopper 2 needs to be adjusted, the support bar 41 can be pulled out from the mounting hole 61 at the rearmost side, and then the support frame 4 and the adjustment seat 5 are driven to move forward under the guidance of the first clamping hole 81 until the exposed support bar 41 is aligned with the mounting hole 61 at the frontmost side, and the support frame 4 is pressed down to complete the forward adjustment, as shown in FIG. Fig.14 shown.

[0121] Switching from the first position to the second position:

[0122] First, pull the support bar 41 out of the mounting hole 61 so that the connecting section 53 is aligned with the second clamping hole 82; then, Fig.17 As shown, the adjustment seat 5 is lifted upward, and the adjustment seat 5 rises under the guidance of the second clamping hole 82; when the adjustment seat 5 reaches the top of the second clamping hole 82, the adjustment seat 5 is driven to move backward under the guidance of the third clamping hole 83 until it reaches the clamping portion 831, as shown in FIG. Fig.18 As shown; finally, Fig.19 As shown, the adjustment seat 5 is pressed down to make the connecting section 53 enter the locking portion 831, so that the adjustment seat 5 is fixed in the second position, thereby ensuring the safety of the occupant when entering and exiting the safety seat.

[0123] Reference below Figures 21 to 35 An embodiment in which the first limiting member 1 ′ and the second limiting member 2 ′ are respectively connected to the headrest 3 is introduced.

[0124] like Fig.21 As shown, the head protection device comprises a first stopper 1', a second stopper 2', a connecting block 10 and a second adjusting mechanism. The connecting block 10 is connected between the first stopper 1' and the headrest 3. The second adjusting mechanism is used to adjust the front and rear position of the connecting block 10 connected to the headrest 3.

[0125] The second adjustment mechanism includes a locking rod 20 and a locking frame 30. The locking frame 30 is arranged on the headrest 3, and at least one locking hole 301 is provided on the locking frame 30. The locking rod 20 is arranged on the side of the connecting block 10 away from the first limiting member 1′. The locking rod 20 is inserted into or disengaged from the locking hole 301 to achieve relative locking or unlocking of the connecting block 10 and the locking frame 30. The connecting block 10 slides relative to the locking frame 30 to adjust the front and rear position of the connecting block 10 relative to the locking frame 30.

[0126] The second adjustment mechanism also includes a driving block 40, which is provided with a limiting hole 401. The locking rod 20 includes a first locking portion 201 and a second locking portion 202. The first locking portion 201 is inserted into the limiting hole 401, and the second locking portion 202 is inserted into or disengaged from the locking hole 301. The driving block 40 slides relative to the connecting block 10 to drive the locking rod 20 to insert into or disengage from the locking hole 301 through the limiting hole 401.

[0127] The second adjustment mechanism further includes a protection cover 50 and a spring 60. The protection cover 50 is arranged outside the driving block 40, and the spring 60 is arranged between the two locking rods 20.

[0128] like Fig. 22 As shown, the headrest 3 is provided with a connecting rod 70 and a locking frame 30, and the second limiting member 2' is installed on the headrest 3 through the connecting rod 70. The first limiting member 1' is installed on the locking frame 30 through the connecting block 10, the locking rod 20 and the driving block 40.

[0129] like Fig.23 As shown, two ends of the first position-limiting member 1 ′ are respectively connected to the connecting blocks 10 arranged on both sides of the headrest 3 .

[0130] like Fig.24 As shown, the connecting rod 70 and the locking frame 30 can be fixedly arranged on the side of the headrest 3.

[0131] like Fig.25 As shown, three locking holes 301 are respectively provided on the upper plate and the lower plate of the lock frame 30 .

[0132] like Fig.26 As shown, the connection block 10 is provided with a groove, the side wall of the groove is provided with a through hole, and the lock rod 20 is inserted into the through hole. The driving block 40 is provided with a limit hole 401, which is a long hole and is arranged obliquely, and the length direction of the two long holes gradually approaches from the front to the back. The protective cover 50 is arranged on the outside of the driving block 40 to protect the driving block 40 and the lock rod 20 and prevent the driving block 40 and the lock rod 20 from accidentally moving.

[0133] like Fig. 27 As shown, under normal conditions, under the action of the spring 60 , the two locking rods 20 are in an extended state, the second locking portions 202 of the two locking rods 20 are exposed from the sides of the groove, and the first locking portion 201 is located at the front end of the limiting hole 401 .

[0134] like Fig.28 As shown, when unlocking is required, the driving block 40 is driven to move forward. Under the action of the limiting hole 401, the first locking portions 201 of the two locking rods 20 approach each other, so that the second locking portions 202 of the locking rods 20 are retracted into the groove of the connecting block 10. At this time, the locking rods 20 are in a retracted state, and the connecting block 10 can be driven to move forward and backward relative to the locking frame 30, thereby realizing the front and rear position adjustment of the first limiting member 1′.

[0135] like Fig.29 As shown, the second locking portion 202 of the locking rod 20 is inserted into the locking hole 301 at the front end; Fig.30 As shown, the second locking portion 202 of the locking rod 20 is inserted into the locking hole 301 at the rearmost end.

[0136] like Fig.31 As shown, the first limiting member 1 ′ is connected between two connecting blocks 10 .

[0137] like Fig.32 As shown, a third hole 101 is provided on the inner side of the connecting block 10, and the third hole 101 is T-shaped. Fig.33 As shown, a clamp head 11' is provided at the end of the first stopper 1', and the width and thickness of the clamp head 11' are greater than the width and thickness of the main body of the first stopper 1'. The clamp head 11' first passes through the third hole 101 horizontally through the horizontal part of the third hole 101, and then rotates 90 degrees to clamp into the vertical part of the third hole 101, as shown in FIG. Fig.34 As shown, the vertical portion of the third hole 101 allows the main body of the first stopper 1' to pass through, while blocking the clamp 11' outside, thereby achieving relative fixation between the first stopper 1' and the connecting block 10. This structure can achieve rapid installation and removal of the first stopper 1'.

[0138] In this embodiment, the main body of the first limiting member 1 ′ is made of a webbing which is relatively soft and can avoid causing damage to the occupant's head.

[0139] like Fig.35 As shown, the second stopper 2 ′ is a plate structure, and a plurality of air holes are arranged on the second stopper 2 ′. The second stopper 2 ′ is connected to a connecting ring 90 through a supporting rod 80 , and the connecting ring 90 is sleeved on the connecting rod 70 .

[0140] Based on the above safety seat head protection device, the present invention further provides a safety seat, which includes the above safety seat head protection device.

[0141] The positive technical effects of the safety seat head protection device in the above-mentioned embodiments are also applicable to the safety seat and will not be described in detail here.

[0142] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that without departing from the principles of the present invention, the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents, and these modifications and equivalent replacements should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A safety seat head protection device, characterized in that: include: The first limiting member (1; 1′), which is arranged in front of the head of the occupant in the safety seat when the occupant is in a normal sitting position and has a gap between the occupant's head, and is used to limit the forward displacement of the occupant; a second stopper (2; 2'), which is arranged on the top of the head of the occupant when the occupant is in a normal sitting position and has a gap with the occupant's head, and whose height distance from the first stopper (1; 1') is kept fixed, and whose height distance from the seat plate (9) of the safety seat is adjustable; and A headrest (3), wherein the second position-limiting member (2; 2′) is mounted on the headrest (3), and the front-rear position of the second position-limiting member (2; 2′) relative to the headrest (3) is adjustable; A support frame (4), the support frame (4) being connected between the second limiting member (2; 2′) and the headrest (3); and A first adjustment mechanism, the first adjustment mechanism being used to adjust the connection position of the support frame (4) and the headrest (3) in the front-rear direction; The first adjustment mechanism comprises an adjustment seat (5) and a mounting plate (6); the adjustment seat (5) is connected to the support frame (4); the mounting plate (6) is mounted on the headrest (3); and the mounting plate (6) is provided with at least two matching parts arranged in the front-to-back direction; the adjustment seat (5) or the support frame (4) is connected to the headrest (3) via the matching parts.

2. The safety seat head protection device according to claim 1, characterized in that: The first limiting member (1; 1') and the second limiting member (2; 2') are fixedly connected.

3. The safety seat head protection device according to claim 1, characterized in that: The first limiting member (1; 1') is mounted on the headrest (3).

4. The safety seat head protection device according to claim 2 or 3, characterized in that: The distance between the headrest (3) and the seat plate (9) in the height direction is adjustable.

5. The safety seat head protection device according to claim 1, characterized in that: The adjustment seat (5) is provided with a first hole (511), the support frame (4) passes through the first hole (511) and is exposed from the bottom of the adjustment seat (5), the matching portion comprises a mounting hole (61), and the exposed portion of the support frame (4) is inserted into the mounting hole (61) to achieve the connection between the support frame (4) and the headrest (3).

6. The safety seat head protection device according to claim 5, characterized in that: The support frame (4) comprises at least two support bars (41), the number of the first holes (511) is the same as the number of the support bars (41), each of the support bars (41) is inserted into a corresponding first hole (511), and at least one of the support bars (41) is exposed from the bottom of the adjustment seat (5).

7. The safety seat head protection device according to claim 1, characterized in that: The support frame (4) is provided with an elastic buckle (42), and the adjustment seat (5) is provided with a second hole (512). The elastic buckle (42) is inserted into the second hole (512) under the action of elastic force to achieve the connection between the support frame (4) and the adjustment seat (5), and is disengaged from the second hole (512) under the action of external force to disconnect the support frame and the adjustment seat (5).

8. The safety seat head protection device according to claim 2, characterized in that: The second limiting member (2; 2') has a first position for protecting the occupant in a normal sitting position and a second position for facilitating the occupant to enter or leave the safety seat.

9. The safety seat head protection device according to claim 8, characterized in that: The second position is located above and rearward of the first position.

10. The safety seat head protection device according to claim 1, characterized in that: The headrest (3) is provided with a locking hole (8); the adjustment seat (5) comprises a seat body (51), a locking block (52) and a connecting section (53); the connecting section (53) is connected between the seat body (51) and the locking block (52); the connecting section (53) is inserted into the locking hole (8); the seat body (51) and the locking block (52) are respectively located on the outer side and the inner side of the headrest (3); the locking hole (8) is configured so that the second limiting member (2; 2′) has a first position for protecting the occupant in a normal sitting position and a second position for facilitating the occupant to enter or leave the safety seat.

11. The safety seat head protection device according to claim 10, characterized in that: The locking hole (8) comprises a first locking hole (81), a second locking hole (82) and a third locking hole (83); the first locking hole (81) is arranged above the mounting plate (6); the first locking hole (81) is used to limit the adjustment seat (5) when the first adjustment mechanism adjusts the front and rear position of the second limiting member (2; 2') relative to the headrest (3); the third locking hole (83) is arranged above the first locking hole (81), and the third locking hole (83) comprises a locking portion (831) for limiting the movement of the adjustment seat (5) relative to the headrest (3); the second locking hole (82) is connected to the first locking hole (81) and the third locking hole (83).

12. The safety seat head protection device according to claim 11, characterized in that: A rib (31) is provided on the side of the headrest (3) for blocking the clamping block (52); the rib (31) is used to block the clamping block (52) from moving upward relative to the headrest (3) when the support frame (4) and the headrest (3) are in a connected state; and when the support frame (4) and the headrest (3) are in a disconnected state, the connecting section (53) can rotate at the connection between the first clamping hole (81) and the second clamping hole (82) so that the clamping block (52) avoids the rib (31).

13. The safety seat head protection device according to any one of claims 2, 5 to 12, characterized in that: The first limiting member (1; 1') and / or the second limiting member (2; 2') comprises a limiting plate, the limiting plate comprises a cylindrical surface adapted to the shape of the occupant's head, and the limiting plate is provided with ventilation holes.

14. The safety seat head protection device according to claim 3, characterized in that: The front-rear position of the first limiting member (1; 1') relative to the headrest (3) is adjustable.

15. The safety seat head protection device according to claim 14, characterized in that: It also comprises a connecting block (10) and a second adjusting mechanism, wherein the connecting block (10) is connected between the first limiting member (1; 1′) and the headrest (3), and the second adjusting mechanism is used to adjust the connection position of the connecting block (10) and the headrest (3) in the front-rear direction.

16. The safety seat head restraint device according to claim 15, characterized in that: The first limiting member (1; 1') is detachably connected to the connecting block (10).

17. The safety seat head restraint device according to claim 15, characterized in that: The second adjustment mechanism comprises a locking rod (20) and a locking frame (30); the locking frame (30) is arranged on the headrest (3), and the locking frame (30) is provided with at least one locking hole (301); the locking rod (20) is arranged on a side of the connecting block (10) away from the first limiting member (1; 1′); the locking rod (20) is inserted into or disengaged from the locking hole (301) to achieve relative locking or unlocking of the connecting block (10) and the locking frame (30); the connecting block (10) slides relative to the locking frame (30) to adjust the front and rear position of the connecting block (10) relative to the locking frame (30).

18. The safety seat head restraint device according to claim 17, characterized in that: The second adjustment mechanism also includes a driving block (40), and a limiting hole (401) is provided on the driving block (40). The locking rod (20) includes a first locking portion (201) and a second locking portion (202). The first locking portion (201) is inserted into the limiting hole (401), and the second locking portion (202) is inserted into or disengaged from the locking hole (301). The driving block (40) slides relative to the connecting block (10) to drive the locking rod (20) to be inserted into or disengaged from the locking hole (301) through the limiting hole (401).

19. A safety seat, characterized in that: The invention comprises a safety seat head protection device as claimed in any one of claims 1 to 18.

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