Child safety seat provided with head support height adjusting limiting mechanism

Abstract

The invention discloses a child safety seat with a head support height adjusting limiting mechanism, which comprises a seat body, a head support and a movable part, and the head support is movably connected with the seat body through the movable part; the movable part comprises a shifting piece and a first positioning part, a fixing plate is further arranged on the seat body, the head support is located between the seat body and the fixing plate, and an upper limiting block is arranged on the fixing plate; the shifting piece is movably arranged between the head support and the fixing plate, an upper clamping block and a lower clamping block are arranged on the shifting piece, and the upper clamping block can move to the position below the upper limiting block to limit upward movement of the head support; a lower limiting block matched with the lower clamping block is arranged on the seat body, and the lower clamping block can move to the position above the lower limiting block to limit downward movement of the head support. According to the child safety seat, the head support and the movable part are arranged, the safety seat is located at different gears by moving the shifting piece, the child safety seat is matched with a safety belt or an automobile safety belt of the safety seat, and the adjusting accuracy and use convenience of the child safety seat provided with the head support height adjusting limiting mechanism are improved.

Description

Technical Field

[0001] The present application relates to the technical field of safety seats, and in particular to a child safety seat provided with a headrest height-limiting mechanism. Background Art

[0002] To ensure the safety of children in vehicles, child safety seats are usually equipped with a headrest inside the backrest of the child safety seat. To accommodate children of different heights, a height adjustment mechanism is installed between the headrest and the backrest, allowing the headrest to be raised or lowered to better protect the child's head. However, the headrests of child safety seats currently on the market do not have clear limit stops during adjustment, making it difficult for consumers to quickly locate the headrest according to the corresponding height of the child, affecting the adjustment accuracy and ease of use of the child safety seat. Summary of the Invention

[0003] The embodiment of the present application provides a child safety seat provided with a head support adjustment height limit mechanism, which can clearly indicate the head support position corresponding to the child's corresponding height, thereby improving the adjustment accuracy and ease of use of the safety seat.

[0004] An embodiment of the present application provides a child safety seat with a headrest adjustment height limit mechanism, comprising: a seat body, a headrest and a movable part, the headrest being movably connected to the seat body through the movable part; the movable part comprising a paddle, a first positioning part and a second positioning part, the seat body also being provided with a fixed plate, side wings and an anti-collision block, the headrest being located between the seat body and the fixed plate, the fixed plate being provided with an upper limit block; the paddle being movably arranged between the headrest and the fixed plate, the paddle being provided with an upper clamping block and a lower clamping block, the upper clamping block being able to move to the bottom of the upper limit block to limit the upward movement of the headrest; the seat body being provided with a lower limit block cooperating with the lower clamping block , the lower locking block can be moved to the top of the lower limit block to limit the downward movement of the head support; the first positioning part includes a fixing rod and a linkage block, the seat body is provided with a plurality of slots that cooperate with the fixing rod, and the linkage block drives the fixing rod to enter or move away from the slot; the second positioning part is provided with a slider and a track, the slider is inserted into the track and movably connected with the second positioning part; the slider is provided with a first protrusion and a second protrusion on the side close to the side wing, and the upper end of the side wing is provided with a positioning hole that cooperates with the first protrusion; the head support is provided with a positioning groove that cooperates with the second protrusion; the outer sides of the side wings are provided with positioning plates, and the anti-collision block is detachably fixed in the positioning plate.

[0005] The embodiment of the present application provides a child safety seat with a head support adjustable height limit mechanism, which has at least the following beneficial effects: by providing a head support and a movable part, the upper clamping block can be moved to the bottom of the upper clamping block by moving the paddle to limit the upward movement of the head support, or the lower clamping block can be moved to the top of the lower clamping block to limit the downward movement of the head support, which can quickly and accurately prompt the head support position corresponding to the corresponding height of the child, thereby improving the adjustment accuracy and convenience of use of the child safety seat provided with the head support adjustable height limit mechanism; by providing a seat body and a head support, the linkage block drives the fixing rod into the slot to stably fix the seat body and the head support, thereby preventing the head support from loosening during use, thereby improving the convenience of use of the child safety seat provided with the head support adjustable height limit mechanism. The stability and service life of the child safety seat can be improved; the safety seat can be placed in different gears by moving the paddle and can be adapted to the safety belt of the safety seat or the car seat belt, thereby improving the use convenience of the child safety seat with a head support height limit adjustment mechanism; by setting a second positioning part and side wings, the second protrusion can be moved up and down along the positioning groove by moving the head support, so that the first protrusion is inserted into the positioning hole to drive the side wings to rotate, and the head support and side wings can be adjusted in a linked manner, thereby improving the protection performance and adjustment convenience of the child safety seat; by setting a positioning plate and an anti-collision block; the anti-collision block can be quickly removed or installed on the seat body through the positioning plate to absorb the impact force on the seat body, thereby improving the disassembly and assembly convenience and the safety of use of the child safety seat.

[0006] In some embodiments, the headrest is provided with a slot for engaging with the paddle, one side of the slot is provided with a first notch for engaging with the upper clamping block, and the bottom of the slot is provided with a through-hole for engaging with the lower clamping block. The provision of the slot facilitates the upper clamping block to move below the upper limit block through the first notch, and facilitates the lower clamping block to move above the lower limit block through the through-hole, thereby ensuring the accurate positioning of the paddle, preventing the paddle from moving out of position, and ensuring the accurate positioning of the child safety seat equipped with a headrest height adjustment mechanism.

[0007] In some embodiments, a pressure block is provided between the paddle and the headrest, and a positioning block is provided on the side of the lower clamping block to cooperate with the pressure block. By providing the pressure block and the positioning block, the paddle can be moved to either side of the pressure block via the positioning blocks, thereby precisely controlling the positions of the upper and lower clamping blocks, quickly and stably switching between different adjustment ranges of the headrest, and improving the adjustment accuracy and ease of use of child safety seats equipped with a headrest height limit mechanism.

[0008] In some embodiments, a first spring is provided on the side of the pressure block away from the paddle, with both ends of the first spring respectively contacting the pressure block and the headrest. The provision of the first spring allows the pressure block to maintain contact with the positioning block, enabling the pressure block to accurately determine the position of the paddle, preventing displacement of the paddle during use and improving the structural stability of child safety seats equipped with a headrest height limiter.

[0009] In some embodiments, the paddle is provided with a first buckle at the upper and lower ends, and a guide groove is provided within the slide. The paddle is inserted into the guide groove via the first buckle and is movably connected to the slide. The provision of the first buckle and the guide groove ensures that the paddle is stably and movably connected within the slide, preventing the paddle from shifting or moving out of position, thereby improving the adjustment accuracy and ease of use of child safety seats equipped with a headrest height limiter mechanism.

[0010] In some embodiments, the distance from the positioning slot to the center of the headrest gradually increases or remains consistent from top to bottom; the second protrusion moves up and down along the positioning slot, and the first protrusion is inserted into the positioning hole to drive the side wings to rotate. This structure ensures that the headrest can drive the second protrusion to move up and down along the positioning slot, thereby driving the side wings to move, ensuring that the headrest and side wings can adjust their positions in a coordinated manner, thereby improving the adjustment accuracy and ease of use of the child safety seat.

[0011] In some embodiments, the side wings and the positioning plate bracket are provided with a movable assembly, the movable assembly comprising a button, a movable arm, and a second spring. One end of the movable arm is slidably connected to the button, and the other end of the movable arm is provided with a second clip. One end of the movable arm abuts against the second spring, allowing the second clip to reciprocate around the button. The anti-collision block is provided with a second notch, and the movable arm passes through the positioning plate via the second clip and is inserted into the second notch to be fixedly connected to the seat body. By providing the movable assembly and the second notch, the movable arm can, under the action of the second spring, drive the second clip to insert into the second notch, ensuring that the anti-collision block is stably fixed to the positioning plate, thereby improving the structural stability of the child safety seat.

[0012] In some embodiments, a guard plate is provided within the positioning plate, and an elastic member is provided between the guard plate and the positioning plate. When the anti-collision block is moved outside the positioning plate, the elastic member pushes the guard plate to cover the positioning plate. The guard plate automatically shields the positioning plate, preventing debris from entering the seat body when the anti-collision block is removed, thereby ensuring the safety and stability of the child safety seat.

[0013] In some embodiments, a buffer portion and a traction rope are further provided above the first positioning portion. The buffer portion includes a winding rod, a positioning rod, and a buffer rod, with both ends of the winding rod being fixed to the seat body. A bracket is provided between the winding rod and the positioning rod, and the buffer rod is disposed within the bracket. The traction rope is passed around the buffer rod and sleeved onto the winding rod. By providing the buffer portion and the traction rope, the traction rope passes around the winding rod and then sleeved onto the buffer rod, effectively providing traction for the child safety seat. In the event of an impact, the buffer rod absorbs external force and moves on the bracket, thereby improving the protective performance of the child safety seat.

[0014] In some embodiments, the bracket is provided with a slot into which the buffer rod is inserted and movably connected to the bracket; the buffer rod, the bracket, and the traction rope located below the winding rod form a crumple space that acts as a buffer. The provision of the slot allows the buffer rod to stably move along the slot under load. The reduction in the crumple space and the resulting buffer distance effectively prevent impact forces from being directly transmitted into the child safety seat, thereby improving the safety and protective performance of the child safety seat.

[0015] The child safety seat with a headrest adjustable height limit mechanism in the embodiment of the present application has at least the following beneficial effects: by arranging the headrest and the movable part, the upper clamping block can be moved to the bottom of the upper limit block to limit the upward movement of the headrest, or the lower clamping block can be moved to the top of the lower limit block to limit the downward movement of the headrest, which can quickly and accurately prompt the headrest position corresponding to the corresponding height of the child, thereby improving the adjustment accuracy and convenience of use of the child safety seat with a headrest adjustable height limit mechanism; by arranging the seat body and the headrest, the linkage block drives the fixing rod to enter the slot to stably fix the seat body and the headrest to avoid the headrest The headrest becomes loose during use, thereby improving the stability and service life of the child safety seat with a headrest adjustment height limit mechanism; the safety seat can be placed in different gears by moving the paddle, and can be adapted to the safety belt of the safety seat or the car seat belt, thereby improving the convenience of use of the child safety seat with a headrest adjustment height limit mechanism; by providing a second positioning portion and side wings, the second protrusion can be moved up and down along the positioning groove by moving the headrest, so that the first protrusion is inserted into the positioning hole to drive the side wings to rotate, thereby realizing the linkage adjustment of the headrest and the side wings, thereby improving the protection performance and adjustment convenience of the child safety seat; by providing a positioning plate and anti-collision The anti-collision block can be quickly removed or installed on the seat body through the positioning plate to absorb the impact force received by the seat body, thereby improving the convenience of disassembly and assembly and the safety of use of the child safety seat; by providing a slide groove, the upper clamping block can be moved to the bottom of the upper limit block through the first notch, and the lower clamping block can be moved to the top of the lower limit block through the through hole, thereby ensuring the positioning accuracy of the paddle, avoiding the situation where the paddle is not moved into place, and ensuring the positioning accuracy of the child safety seat with a head support height limit adjustment mechanism; by providing a pressing block and a positioning block, the paddle can be moved to both sides of the pressing block through the positioning block, thereby accurately controlling the upper and lower clamping blocks. The headrest can be quickly and stably switched to different adjustment ranges of the headrest, thereby improving the adjustment accuracy and ease of use of the child safety seat provided with a headrest height limit mechanism; by providing a movable component and a second notch, the movable arm can drive the second buckle to be inserted into the second notch under the action of the second spring, thereby ensuring that the anti-collision block can be stably fixed in the positioning plate, thereby improving the structural stability of the child safety seat; by providing a buffer part and a traction rope, the traction rope is passed around the winding rod and then sleeved on the buffer rod, which can effectively provide traction for the child safety seat. In the event of an impact, the buffer rod absorbs external force and moves on the bracket, thereby improving the protective performance of the child safety seat.

[0016] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a child safety seat provided with a headrest height adjustment limit mechanism according to one embodiment of the present application; Figure 2 A schematic structural diagram of a child safety seat provided with a headrest height adjustment limit mechanism according to an embodiment of the present application from another angle; Figure 3 This is an exploded view of the structure of a child safety seat provided with a headrest height adjustment limit mechanism according to one embodiment of the present application; Figure 4 A cross-sectional view of a child safety seat provided with a headrest height adjustment limit mechanism according to one embodiment of the present application; Figure 5 for Figure 3 Diagram of the structure of the headrest and pick; Figure 6 for Figure 3 A magnified view of the structure of the middle pick; Figure 7 for Figure 3 A magnified view of the structure of the middle pick from another angle; Figure 8 A schematic structural diagram of a child safety seat provided with a headrest height adjustment limit mechanism in the first position according to an embodiment of the present application; Figure 9 for Figure 8 Enlarged view of part A in the middle; Figure 10 A schematic diagram of the structure of a child safety seat provided with a headrest height adjustment limit mechanism in the second position according to an embodiment of the present application; Figure 11 for Figure 9 Enlarged view of middle part B; Figure 12 This is an exploded view of the structure of a child safety seat provided with a headrest height adjustment limit mechanism according to another embodiment of the present application; Figure 13 This is an exploded view of the structure of a child safety seat provided with a headrest height adjustment limit mechanism according to another embodiment of the present application; Figure 14 for Figure 13 An enlarged view of the structure of the second positioning portion; Figure 15 This is an exploded view of the structure of a child safety seat provided with a headrest height adjustment limit mechanism according to another embodiment of the present application; Figure 16 for Figure 15 A magnified view of the structure of the movable component and the cover; Figure 17 for Figure 16Structural breakdown diagram of the active components; Figure 18 for Figure 15 Schematic diagram of the structure of the positioning plate and the guard plate; Figure 19 This is an exploded view of the structure of a child safety seat provided with a headrest height adjustment limit mechanism according to another embodiment of the present application; Figure 20 for Figure 19 A magnified view of the structure of the middle buffer; Figure 21 for Figure 20 Exploded view of the structure of the middle buffer; Figure 22 for Figure 21 A magnified view of the structure of the middle buffer rod; Figure 23 for Figure 19 Cross-sectional view of the middle buffer section. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementation methods. At the same time, the steps or actions in the method description can also be swapped or adjusted in order in a manner that is obvious to those skilled in the art. Therefore, the various orders in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a necessary order, unless otherwise specified that a certain order must be followed.

[0019] In the description of this application, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0020] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0021] Reference Figures 1 to 14, an embodiment of the present invention provides a child safety seat with a headrest adjustment height limit mechanism, comprising: a seat body 100, a headrest 200 and a movable part 300, the headrest 200 being movably connected to the seat body 100 through the movable part 300; the movable part 300 comprises a paddle 310, a first positioning part 320 and a second positioning part 330, the seat body 100 is further provided with a fixing plate 110, a side wing 120 and an anti-collision block 130, the headrest 200 is located between the seat body 100 and the fixing plate 110, and the fixing plate 110 is provided with an upper limit block 111; the paddle 310 is movably arranged between the headrest 200 and the fixing plate 110, and the paddle 310 is provided with an upper clamping block 311 and a lower clamping block 312, the upper clamping block 311 can be moved to the bottom of the upper limit block 111 to limit the upward movement of the headrest 200; the seat body 100 is provided with a lower limit block cooperating with the lower clamping block 312 140, the lower locking block 312 can be moved to the top of the lower limit block 140 to limit the downward movement of the head support 200; the first positioning portion 320 includes a fixing rod 321 and a linkage block 322, and the seat body 100 is provided with a plurality of slots 170 that cooperate with the fixing rod 321, and the linkage block 322 drives the fixing rod 321 to enter or move away from the slot 170; the second positioning portion 330 is provided with a slider 331 and a track 332, and the slider 331 is inserted into the track 332 and movably connected with the second positioning portion 330; the slider 331 is provided with a first protrusion 333 and a second protrusion 334 on the side close to the side wing 120, and the upper end of the side wing 120 is provided with a positioning hole 121 that cooperates with the first protrusion 333; the head support 200 is provided with a positioning groove 210 that cooperates with the second protrusion 334; the outer side of the side wing 120 is provided with a positioning plate 122, and the anti-collision block 130 is detachably fixed in the positioning plate 122.

[0022] The cam 310 of the child safety seat 100 is fixed on the upper side of the child safety seat 100, so that the child safety seat 100 can be adjusted to the desired height by adjusting the height of the child safety seat 100. The piece 310 enables the safety seat to be in different gears and adapts to the safety seat's own seat belt or the car's seat belt, thereby improving the use convenience of the child safety seat provided with a head support height limit adjustment mechanism; by providing the second positioning portion 330 and the side wing 120, by moving the head support 200, the second protrusion 334 can be moved up and down along the positioning groove 210, so that the first protrusion 333 is inserted into the positioning hole 121 to drive the side wing 120 to rotate, and the head support 200 and the side wing 120 can be adjusted in a coordinated manner, thereby improving the protective performance and adjustment convenience of the child safety seat; by providing the positioning plate 122 and the anti-collision block 130; the anti-collision block 130 can be quickly removed or installed on the seat body 100 through the positioning plate 122 to absorb the impact force received by the seat body 100, thereby improving the disassembly and assembly convenience and the use safety of the child safety seat.

[0023] In some embodiments, the headrest 200 is provided with a slot 220 that engages with the paddle 310. A first notch 221 that engages with the upper clamping block 311 is provided on one side of the slot 220, and a through-hole 222 that engages with the lower clamping block 312 is provided at the bottom of the slot 220. The provision of the slot 220 facilitates the upper clamping block 311 to move below the upper limit block 111 through the first notch 221, and facilitates the lower clamping block 312 to move above the lower limit block 140 through the through-hole 222. This ensures the precise positioning of the paddle 310, prevents the paddle 310 from moving out of position, and ensures the precise positioning of the child safety seat equipped with a headrest height adjustment mechanism.

[0024] Reference Figures 5 to 7 In some embodiments, a pressure block 230 is further provided between the paddle 310 and the headrest 200, and a positioning block 313 is provided on the side of the lower clamping block 312 to cooperate with the pressure block 230. By providing the pressure block 230 and the positioning block 313, the paddle 310 can be moved to both sides of the pressure block via the positioning blocks, thereby precisely controlling the positions of the upper and lower clamping blocks, quickly and stably switching between different adjustment ranges of the headrest, and improving the adjustment accuracy and ease of use of child safety seats equipped with a headrest height limit mechanism.

[0025] In some embodiments, a first spring 240 is provided on the side of the pressure block 230 away from the paddle 310, with the two ends of the first spring 240 respectively contacting the pressure block 230 and the headrest 200. The provision of the first spring 240 ensures that the pressure block remains in contact with the positioning block 313, allowing the pressure block 230 to accurately determine the position of the paddle 310, preventing displacement of the paddle 310 during use and improving the structural stability of the child safety seat equipped with a headrest height limiter.

[0026] In some embodiments, first buckles 314 are provided at the upper and lower ends of the paddle 310, and a guide groove 223 is provided within the slide 220. The paddle 310 is inserted into the guide groove 223 via the first buckle 314 and movably connected to the slide 220. The provision of the first buckle 314 and the guide groove 223 ensures that the paddle 310 is stably and movably connected within the slide 220, preventing the paddle 310 from shifting or moving out of position, thereby improving the adjustment accuracy and ease of use of a child safety seat equipped with a headrest height limiter mechanism.

[0027] In some embodiments, the side of the pressing block 230 facing the paddle 310 and the positioning block 313 are both triangular in shape. This structure ensures that the pressing block 230 and the positioning block 313 can be flexibly and quickly moved and positioned, reduces wear on the paddle 310 during use, and increases the service life of the child safety seat equipped with a headrest height limiter.

[0028] Reference Figure 9 In some embodiments, the fixing rod 321 is fixedly connected to the headrest 200 via a bracket 323. C-shaped buckles 324 are provided on both sides of the linkage block 322 to engage with the fixing rod 321. Rotating the linkage block 322 causes the C-shaped buckles 324 to push the fixing rod 321 to reciprocate on the bracket 323. The bracket 323 and C-shaped buckles 324 ensure that the linkage block 322 can stably drive the fixing rod 321 to reciprocate within the slot 130, thereby ensuring the structural stability and adjustable convenience of the child safety seat equipped with the headrest height limit mechanism.

[0029] Reference Figure 5 In some embodiments, the slot 130 is disposed between the bracket 323 and the linkage block 322, and the C-hooks 324 are located on either side of the slot 130. This structure ensures that the linkage block 322 can stably drive the fixing rod 321 into or out of the slot 130, preventing the fixing rod 321 from getting stuck in the slot 130, and ensuring the structural stability of the child safety seat equipped with a headrest height limit mechanism.

[0030] Reference Figure 6 and Figure 7In some embodiments, a protrusion 315 is provided on the paddle 310, and prompt marks 316 are provided on both sides of the protrusion 315. By providing the protrusion 315 and the prompt mark 316, the user can quickly move the paddle 310 via the protrusion 315, and the user can intuitively observe the position of the paddle 310, thereby improving the convenience of using the child safety seat equipped with a headrest height limit adjustment mechanism. In actual application, the prompt mark 316 can mark the child height applicable to the position limited by the current paddle 310, for example ≥100cm, ≤105cm, etc. When the upper block 311 moves to below the upper limit block 111, the prompt mark 316 of ≤105cm is displayed to remind the user that the upward movement of the head support 200 is restricted at this time, that is, it reminds the user that the child safety seat currently provided with a head support adjustable height limit mechanism is suitable for children with a height of less than or equal to 105cm; when the lower block 312 can move to above the lower limit block 140, the prompt mark 316 of ≥100cm is displayed to remind the user that the downward movement of the head support 200 is restricted at this time, that is, it reminds the user that the child safety seat currently provided with a head support adjustable height limit mechanism is suitable for children with a height of greater than or equal to 100cm.

[0031] Reference Figure 3 In some embodiments, the headrest 200 is further provided with a label 250 that matches the prompt mark 316. By moving the paddle 310, the label 250 is aligned with the corresponding prompt mark 316, thereby prompting the user to select the gear position suitable for the child's height by moving the paddle 310, so as to quickly and accurately determine the position of the headrest 200.

[0032] Reference Figure 5 In some embodiments, the distance between the positioning slot 210 and the center of the headrest 200 gradually increases or remains constant from top to bottom; the second protrusion 334 moves up and down along the positioning slot 210, and the first protrusion 333 is inserted into the positioning hole 121, driving the side wings 120 to rotate. This structure ensures that the headrest 200 can drive the second protrusion 334 to move up and down along the positioning slot 210, thereby driving the side wings 120 to move. This ensures that the headrest 200 and the side wings 120 can adjust their positions in a coordinated manner, improving the adjustment accuracy and ease of use of the child safety seat.

[0033] Reference Figure 12 In some embodiments, the side wing 120 is hinged to the seat body 100 through a connecting block 123 to ensure that the lower end of the side wing 120 can be stably inserted into the connecting block 123 and hinged to the seat body 100 to ensure the stability of the connection between the side wing 120 and the seat body 100.

[0034] Reference Figures 15 to 17In some embodiments, the side wings 120 and the positioning plate 122 support a movable assembly 150. The movable assembly 150 includes a button 151, a movable arm 152, and a second spring 153. One end of the movable arm 152 is slidably connected to the button 151, and the other end of the movable arm 152 is provided with a second buckle 154. One end of the movable arm 152 abuts against the second spring 153, causing the second buckle 154 to reciprocate around the button 151. The anti-collision block 130 is provided with a second notch 131. The movable arm 152 passes through the positioning plate 122 via the second buckle 154 and is inserted into the second notch 131, thereby being fixedly connected to the seat body 100. By providing the movable assembly 150 and the second notch 131, the movable arm 152, under the action of the second spring 153, can drive the second buckle 154 into the second notch 131, ensuring that the anti-collision block 130 is stably fixed within the positioning plate 122, thereby improving the structural stability of the child safety seat.

[0035] Specifically, a cavity 124 is defined within the positioning plate 122 for accommodating the bumper 130. A cover plate 126 is also provided on the outside of the positioning plate 122; the movable arm 152 is secured within the positioning plate 122 via the cover plate 330. A fixing hole 125 is defined at the bottom of the cavity 124, which engages with a second clip 154. The second clip 154 ​​passes through the fixing hole 125 and enters the cavity 124, allowing it to be stably secured within the second notch 131, thereby enhancing the stability of the connection between the movable arm 152 and the bumper 130.

[0036] Reference Figure 15 and Figure 18 In some embodiments, a guard plate 160 is further disposed within the positioning plate 122, with an elastic member disposed between the guard plate 160 and the positioning plate 122. When the anti-collision block 130 is moved outside the positioning plate 122, the elastic member pushes the guard plate 160 to cover the opening of the cavity 124. The guard plate 160 automatically shields the positioning plate 122, preventing debris from entering the seat body 100 when the anti-collision block 130 is removed, thereby ensuring the safety and stability of the child safety seat.

[0037] In some embodiments, the second buckle 154 includes a transverse buckle 155 and a vertical buckle 156. The length of the transverse buckle 155 is perpendicular to the length of the vertical buckle 156. The transverse buckle 155 has a triangular cross-section, while the vertical buckle 156 has a trapezoidal cross-section. The distance between the top corner of the transverse buckle 155 and the bottom of the cavity 124 is smaller than the distance between the bottom surface of the vertical buckle 156 and the bottom of the cavity 124. This structure ensures that after the elastic member pushes the guard plate 160 across the transverse buckle 155, the transverse buckle 155 and the elastic member can continue to push the guard plate 160 across the vertical buckle 156 and finally move to the opening of the cavity 124, automatically resetting the guard plate 160 and improving the ease of use of the child safety seat.

[0038] Reference Figures 19 to 23 In some embodiments, a buffer portion 340 and a traction rope 350 are further provided above the first positioning portion 320. The buffer portion 340 includes a winding rod 341, a positioning rod 342, and a buffer rod 343. The ends of the winding rod 341 are fixed to the seat body 100. A bracket 344 is provided between the winding rod 341 and the positioning rod 342, and the buffer rod 343 is disposed within the bracket 344. The traction rope 350 passes around the buffer rod 343 and is sleeved on the winding rod 341. By providing the buffer portion 340 and the traction rope 350, the traction rope 350 passes around the winding rod 341 and then sleeved on the buffer rod 343, effectively providing traction for the child safety seat. In the event of an impact, the buffer rod 343 absorbs external force and moves on the bracket 344, thereby improving the protective performance of the child safety seat.

[0039] In some embodiments, a rear cover 180 is provided on the rear side of the seat body 100 , and a third notch 181 is provided on the rear cover 180 . One end of the traction rope 350 away from the buffer portion 340 passes through the third notch 181 and extends to the rear of the seat body 100 .

[0040] In some embodiments, bracket 344 is provided with a retaining slot 345, into which a buffer rod 343 is inserted and movably connected to bracket 344. The buffer rod 343, bracket 344, and a traction rope 350 located below the winding rod 341 form a collapsible space 360 ​​that acts as a buffer. The provision of the retaining slot 345 allows the buffer rod 343 to move stably along the slot 345 under load. The reduction in the collapsible space 360 ​​creates a buffer distance, effectively preventing impact forces from being directly transmitted into the child safety seat, thereby improving the safety and protective performance of the child safety seat.

[0041] Reference Figure 22 In some embodiments, the lower end of the buffer rod 343 is provided with a third buckle 363 that engages with the bracket 344. The provision of the third buckle 363 ensures that the buffer rod 343 can be stably positioned within the bracket 344, preventing the buffer rod 343 from loosening during normal use, thereby improving the safety of the child safety seat.

[0042] Reference Figure 21 The upper end of the bracket 344 is provided with a fixing ring 361 for fitting the winding rod 341. The fixing ring 361 ensures the stability of the connection between the winding rod 341 and the bracket 344, prevents the winding rod 341 from falling under stress and affecting the fixing function of the traction rope 3050, and ensures the protective performance of the child safety seat.

[0043] In some embodiments, the lower end of the bracket 344 is provided with a fixing groove 362 for connecting to the positioning rod 342, and the buffer rod 343 is located between the fixing ring 361 and the fixing groove 362. The provision of the fixing groove 362 ensures that the positioning rod 342 can stably fix the lower end of the bracket 344, preventing the bracket 344 from being displaced during use.

[0044] In some embodiments, grooves 364 are provided between the third buckle 363 and the buffer rod 343, with the grooves 364 being located on both sides of the third buckle 363. The provision of the grooves 364 reduces the contact area between the third buckle 363 and the buffer rod 343, ensuring that the third buckle 363 can deform or break when subjected to external force, allowing the buffer rod 343 to disconnect from the bracket 344 and move along the limiting groove 345, thereby ensuring the protective performance of the child safety seat.

[0045] In some embodiments, a fixing block 346 is provided within the retaining groove 345, and the height of the fixing block 346 gradually decreases as it approaches the buffer rod 343. The provision of the retaining block 242 effectively ensures that the fixing block 346 stably engages the buffer rod 343, preventing the buffer rod 343 from loosening or shifting under load, thereby improving the safety and stability of the child safety seat.

[0046] During use of a child safety seat according to an embodiment of the present application, the user installs the bumper 130 on the side of the child safety seat facing the vehicle door, using the child safety seat's mounting position. The upper end of the child safety seat is secured to the corresponding port on the vehicle using the traction cord 350. To adjust the headrest 200, the user moves the paddle 310 using the protrusion 315 so that the indicator 316 corresponds to the child's height. When the child's height is less than or equal to 105 cm, the paddle 310 is toggled to the left, causing the positioning block 313 to move to the left and to the left of the pressing block 230, so that the upper clamping block 311 extends outside the notch 221. At this time, the upper clamping block 311 can move to the bottom of the upper limit block 111 and limit the upward movement of the head support 200. The handle 260 connected to the linkage block 322 drives the linkage block 322 to rotate. The linkage block 322 is rotated to allow the C buckle 324 to push the fixing rod 321 away from the slot 130. After the head support 200 moves downward to a suitable position, the linkage block 322 is rotated in the opposite direction to allow the C buckle 324 to push the fixing rod 321 into the slot 130 to fix the position of the head support 200. At this time, the child safety seat provided with the head support height limit mechanism is in the following position. Figure 8 and Figure 9The first position is shown. In the first position, the headrest 200 reaches its highest position when the upper retaining block 311 abuts the upper retaining block 111, narrowing the adjustment range of the headrest 200 to prevent it from being too high and affecting the safety seat's adjustability. Because children are less than or equal to 105 cm tall, the maximum position of the headrest 200 is limited, allowing the use of the safety seat's built-in seat belt to ensure a stable and comfortable fit for the child on the seat body 100, improving the safety seat's adjustability and ease of use.

[0047] In another embodiment, when the child's height is greater than or equal to 100 cm, the paddle 310 is toggled to the right, causing the positioning block 313 to move to the right and move to the right side of the pressure block 230, so that the lower clamping block 312 passes through the outside of the through hole 222. At this time, the lower clamping block 312 can move to the top of the lower limit block 140 and limit the downward movement of the head support 200. The handle 260 connected to the linkage block 322 drives the linkage block 322 to rotate, and the linkage block 322 is rotated to allow the C buckle 324 to push the fixing rod 321 away from the slot 130. After the head support 200 moves upward to a suitable position, the linkage block 322 is rotated in the opposite direction to allow the C buckle 324 to push the fixing rod 321 into the slot 130 to fix the position of the head support 200. At this time, the child safety seat provided with the head support height limit adjustment mechanism is in the following position. Figure 10 and Figure 11 The second gear position is shown. In the second gear, the head support 200 reaches its lowest position where the lower locking block 312 abuts the lower limit block 140, narrowing the adjustment range of the head support 200 to prevent it from being positioned too low and affecting the safety seat's adjustability. At this point, since children are 100 cm or taller, the lowest position of the head support 200 is limited. To avoid the discomfort of wearing a car seat belt that is too tight, the car's seat belt can be used to ensure the child is stably and comfortably secured to the seat body 100, improving the safety seat's adjustability and ease of use.

[0048] When the headrest 200 is adjusted, the headrest 200 drives the positioning slot 210 to move up and down, and the second protrusion 334 moves up and down along the positioning slot 210; since the distance between the positioning slot 210 and the middle position of the headrest 200 gradually increases or remains the same from top to bottom, when the headrest 200 moves upward, the second protrusion 334 moves downward along the positioning slot 210. When the movement reaches the position where the distance between the positioning slot 210 and the middle position of the headrest 200 gradually increases from top to bottom, the positioning slot 210 drives the second protrusion 334 to move outward, thereby driving the slider 331 to move outward; at the same time, the slider 331 moves along the track 332 and drives the positioning hole 121 through the first protrusion 333 to rotate the side wing 120, so that the upper end of the side wing 120 extends outward, and when the headrest 200 is adjusted upward, the side wing 120 is opened outward synchronously, ensuring that the side wing 120 can stably provide side support for the child, ensuring the safety and adjustment convenience of the child safety seat, and improving the protective performance of the child safety seat.

[0049] The child safety seat of the embodiment of the present application is provided with a head support height limit mechanism, by providing the head support 200 and the movable part 300, by moving the paddle 310, the upper clamping block 311 can be moved to the bottom of the upper limit block 111 to limit the upward movement of the head support, or the lower clamping block 312 can be moved to the top of the lower limit block 140 to limit the downward movement of the head support 200, which can quickly and accurately prompt the head support position corresponding to the corresponding height of the child, thereby improving the adjustment accuracy and use convenience of the child safety seat provided with the head support height limit mechanism; by providing the seat body 100 and the head support 200, the linkage block 322 drives the fixing rod 321 to enter the slot 170 to stably fix the child. The seat body 100 and the head support 200 are fixed to prevent the head support 200 from loosening during use, thereby improving the stability and service life of the child safety seat provided with a head support height limit adjustment mechanism; by moving the paddle 310, the safety seat is placed in different gears and adapted to the safety seat's own seat belt or the car seat belt, thereby improving the convenience of use of the child safety seat provided with a head support height limit adjustment mechanism; by providing the second positioning portion 330 and the side wing 120, the second protrusion 334 can be moved up and down along the positioning groove 210 by moving the head support 200, so that the first protrusion 333 is inserted into the positioning hole 121 to drive the side wing 120 to rotate, thereby realizing the head support 200 and the side wing 120 linkage adjustment, improves the protection performance and adjustment convenience of the child safety seat; by setting the positioning plate 122 and the anti-collision block 130; the anti-collision block 130 can be quickly disassembled or installed on the seat body 100 through the positioning plate 122 to absorb the impact force received by the seat body 100, thereby improving the disassembly and assembly convenience and the use safety of the child safety seat; by setting the slide groove 220, it is convenient for the upper block 311 to move to the bottom of the upper limit block 111 through the first notch 221, and it is convenient for the lower block 312 to move to the top of the lower limit block 140 through the through hole 222, thereby ensuring the positioning accuracy of the paddle 310, avoiding the situation where the paddle 310 is not moved into place, and ensuring that the headrest is provided. The positioning accuracy of the child safety seat with the height limit mechanism is improved. By providing the pressure block 230 and the positioning block 313, the paddle 310 can be moved to both sides of the pressure block through the positioning block, thereby accurately controlling the positions of the upper and lower clamping blocks, quickly and stably switching between different adjustment ranges of the head support, thereby improving the adjustment accuracy and ease of use of the child safety seat with the head support height limit mechanism. By providing the movable assembly 150 and the second notch 131, the movable arm 152 can drive the second buckle 154 to insert into the second notch 131 under the action of the second spring 153, ensuring that the anti-collision block 130 can be stably fixed in the positioning plate 122, thereby improving the structural stability of the child safety seat.By providing the buffer portion 340 and the traction rope 350, the traction rope 350 is wrapped around the winding rod 341 and then sleeved on the buffer rod 343, which can effectively provide traction for the child safety seat. In the event of an impact, the buffer rod 343 absorbs external force and moves on the bracket 344, thereby improving the protective performance of the child safety seat.

[0050] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the scheme of this embodiment.

[0051] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the field can also make various equivalent modifications or substitutions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A child safety seat provided with a headrest height limit mechanism, characterized in that: include: A seat body, a headrest and a movable part, the headrest is movably connected to the seat body through the movable part; the movable part includes a paddle, a first positioning part and a second positioning part, the seat body is also provided with a fixed plate, side wings and an anti-collision block, the headrest is located between the seat body and the fixed plate, and the fixed plate is provided with an upper limit block; the paddle is movably arranged between the headrest and the fixed plate, the paddle is provided with an upper clamping block and a lower clamping block, the upper clamping block can be moved to the bottom of the upper limit block to limit the upward movement of the headrest; the seat body is provided with a lower limit block cooperating with the lower clamping block, and the lower clamping block can be moved to the upper part of the lower limit block to limit the downward movement of the head support; the first positioning part includes a fixing rod and a linkage block, and the seat body is provided with a plurality of slots that cooperate with the fixing rod, and the linkage block drives the fixing rod to enter or move away from the slot; the second positioning part is provided with a slider and a track, and the slider is inserted into the track and movably connected with the second positioning part; the slider is provided with a first protrusion and a second protrusion on the side close to the side wing, and the upper end of the side wing is provided with a positioning hole that cooperates with the first protrusion; the head support is provided with a positioning groove that cooperates with the second protrusion; the outer sides of the side wings are provided with positioning plates, and the anti-collision blocks are detachably fixed in the positioning plates.

2. The child safety seat with a headrest height limit mechanism according to claim 1, characterized in that: The headrest is provided with a sliding groove that cooperates with the paddle, one side of the sliding groove is provided with a first notch that cooperates with the upper clamping block, and the bottom of the sliding groove is provided with a through hole that cooperates with the lower clamping block.

3. The child safety seat with a headrest height adjustment limit mechanism according to claim 2, characterized in that: A pressing block is further provided between the paddle and the head support, and a positioning block cooperating with the pressing block is provided on the side surface of the lower clamping block.

4. The child safety seat with a headrest height adjustment limit mechanism according to claim 3, characterized in that: A first spring is provided on a side of the pressing block away from the paddle, and two ends of the first spring are respectively in contact with the pressing block and the headrest.

5. The child safety seat with a headrest height adjustment limit mechanism according to claim 2, characterized in that: The upper and lower ends of the paddle are provided with first buckles, and the slide is provided with a guide groove; the paddle is inserted into the guide groove through the first buckle and is movably connected with the slide.

6. The child safety seat with a headrest height adjustment limit mechanism according to claim 1, characterized in that: The distance from the positioning groove to the middle position of the head support gradually increases from top to bottom or remains consistent; the second protrusion moves up and down along the positioning groove, and the first protrusion is inserted into the positioning hole to drive the side wing to rotate.

7. The child safety seat with a headrest height adjustment limit mechanism according to claim 1, characterized in that: The side wings and the positioning plate bracket are provided with a movable component, and the movable component includes a button, a movable arm and a second spring. One end of the movable arm is slidably connected to the button, and the other end of the movable arm is provided with a second clip; one end of the movable arm rests on the second spring so that the second clip reciprocates around the button; a second notch is provided on the anti-collision block, and the movable arm passes through the positioning plate through the second clip and is inserted into the second notch and fixedly connected to the seat body.

8. The child safety seat with a headrest height adjustment limit mechanism according to claim 7, characterized in that: A guard plate is further provided inside the positioning plate, and an elastic member is further provided between the guard plate and the positioning plate; when the anti-collision block moves outside the positioning plate, the elastic member pushes the guard plate to cover the positioning plate.

9. The child safety seat with a headrest height adjustment limit mechanism according to claim 1, characterized in that: A buffer portion and a traction rope are also provided above the first positioning portion. The buffer portion includes a winding rod, a positioning rod and a buffer rod. The two ends of the winding rod are respectively fixed in the seat body; a bracket is provided between the winding rod and the positioning rod, and the buffer rod is arranged in the bracket; the traction rope is passed around the buffer rod and is sleeved on the winding rod.

10. The child safety seat with a head support height adjustment limit mechanism according to claim 9, characterized in that: The bracket is provided with a slot, and the buffer rod is inserted into the slot and movably connected to the bracket; the buffer rod, the bracket and the traction rope located below the winding rod form a collapse space that plays a buffering role.

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