Adjustable footrest and child safety seat

Abstract

This application discloses an adjustable footrest and a child safety seat. The adjustable footrest includes a pedal, a connecting shaft, a clamping block, and a locking assembly. The pedal has a slot and a position slot. The slot extends to the side of the pedal for the child safety seat's support leg to be inserted. Two position slots are distributed on opposite sides of the slot in the slot width direction. The connecting shaft passes through the position slot, and the clamping block is hinged to the connecting shaft, allowing the clamping block to rotate relative to the pedal. The connecting shaft can change position within the position slot to adjust the distance between the clamping block and the bottom and / or inner wall of the slot. The locking assembly is detachably connected to the two clamping blocks, allowing the two clamping blocks to press the support leg firmly into the slot. Thus, by adjusting the position of the connecting shaft within the position slot, the distance between the clamping block and the bottom and / or inner wall of the slot can be flexibly changed, effectively adapting to support legs of different diameters or cross-sectional sizes, and achieving flexible adjustment of the footrest height.

Description

Technical Field

[0001] This application relates to the field of maternal and infant products technology, and in particular to an adjustable footrest and a child safety seat. Background Technology

[0002] Child safety seats, as a key device for ensuring the safety of infants and young children during vehicle travel, have been widely promoted and mandated for use globally. To balance safety and comfort for children, modern child safety seats have undergone continuous structural design optimization, particularly in support systems and adjustment mechanisms, where higher requirements have been placed. Among these, the footrest, as a crucial component for improving leg support, alleviating fatigue during long journeys, and enhancing overall comfort, directly impacts the user's actual experience.

[0003] Currently, most child safety seats on the market are equipped with support legs (also called support feet or front support bars) to enhance overall stability. These support legs typically employ a two-section telescopic structure to adapt to different vehicle models and installation space requirements. However, these two-section support legs suffer from structural inconsistencies in the diameter or cross-sectional dimensions of the upper and lower sections, making it difficult to achieve universal compatibility with the footrest mechanism. Specifically, the footrest can usually only be fixed to one section of the support leg, thus limiting the range and flexibility of footrest height adjustment. Utility Model Content

[0004] The purpose of this application is to provide an adjustable foot pedal and child safety seat that improves the versatility and flexibility of the foot pedal.

[0005] The embodiments of this application can be implemented as follows: In a first aspect, this utility model provides an adjustable foot pedal, including a pedal, a connecting shaft, a pressing block, and a locking assembly; The pedal is provided with a slot and a shift slot. The slot extends through to the side of the pedal and is used for the support leg of a child safety seat to be inserted. The two shift slots are distributed on opposite sides of the slot in the width direction. The clamping block is connected to the connecting shaft and is rotatable relative to the pedal. The connecting shaft passes through the gear slot, wherein the connecting shaft can change position within the gear slot to change the distance between the clamping block and the bottom and / or inner wall of the slot. The locking assembly is detachably connected to the two clamping blocks so that the two clamping blocks together press the support leg into the slot.

[0006] In an optional embodiment, the gear slot includes a transition section and at least two gear segments that are all connected to the transition section. The connecting shaft can be switched from one of the gear segments to any other gear segment via the transition segment; One of two adjacent gear segments is closer to the bottom of the slot relative to the other; and / or, along the direction from the bottom to the opening of the slot, one of two adjacent gear segments is closer to the inner wall of the slot relative to the other.

[0007] In an optional embodiment, the transition section is arc-shaped, and the gear slot includes two gear segments, which are respectively connected to the two ends of the transition section.

[0008] In an optional embodiment, a protrusion is provided on the inner sidewall of the gear shift section near the transition section.

[0009] In an optional embodiment, the protrusion has an arcuate surface structure.

[0010] In an optional embodiment, a first anti-slip pad is affixed to the bottom of the slot; And / or, The side of the clamping block that contacts the support leg is covered with a second anti-slip pad; In an optional embodiment, the pedal includes an integrally formed connecting block and a carrier plate, the connecting block and the carrier plate forming an acute angle, the connecting block having the slot and the stop slot, and the carrier plate for supporting the child's feet.

[0011] In an optional embodiment, mounting grooves are provided on both opposite inner sidewalls of the card slot; the gear slot communicates with the mounting grooves. The clamping block has a portion extending into the mounting groove, and the connecting shaft also passes through the mounting groove and the portion of the clamping block located within the mounting groove.

[0012] In an optional embodiment, the portion of the clamping block located within the mounting groove has a cylindrical structure, the cylindrical structure having an eccentric through hole, and the connecting shaft being rotatably inserted through the eccentric through hole.

[0013] Secondly, this utility model provides a child safety seat, including a seat body, a support leg, and an adjustable footrest as described in any of the foregoing embodiments.

[0014] Compared with the prior art, the beneficial effects of the embodiments of this application include, for example: 1. No need to drill holes or set up mating structures on the support legs: All adjustment and locking mechanisms (gear slots, pressure blocks, connecting shafts, locking components) are integrated into the pedal itself, avoiding modification of the original support leg, preserving the support leg structure, and improving safety and versatility.

[0015] 2. Flexible height adjustment and strong adaptability: By switching between different gear segments in the gear slot through the connecting shaft, the distance between the clamping block and the bottom / or inner wall of the slot can be adjusted in multiple levels, effectively adapting to support legs with different diameters or cross-sectional sizes. It is especially suitable for two-section support legs with different thicknesses at the top and bottom, realizing flexible adjustment of the foot pedal height.

[0016] 3. Stable and reliable clamping: The clamping blocks on both sides press the support legs inward simultaneously, and are equipped with a first anti-slip pad and a second anti-slip pad to increase friction, prevent loosening or slippage during driving, and improve safety.

[0017] 4. User-friendly human-computer interaction with clear gear feedback: The transition section of the gear slot has a raised arc surface, which provides a clear sense of positioning and a limiting effect, prevents accidental slippage, and ensures accurate and reliable clamping position.

[0018] 5. Compact structure and integrated design: The pedal is made in one piece, and the connecting block and the carrier plate are at an acute angle, which not only conforms to the natural posture of children's legs and improves comfort, but also enhances the overall rigidity and durability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is one of the schematic diagrams showing the state of a child safety seat according to an embodiment of this application; Figure 2 This is the second schematic diagram of the state of the child safety seat according to the embodiments of this application; Figure 3 for Figure 1 and Figure 2 A schematic diagram of a center-adjustable pedal; Figure 4 for Figure 3 Top view; Figure 5 for Figure 3 Exploded view; Figure 6 for Figure 5 A partial schematic diagram of the middle pedal; Figure 7 for Figure 3 A schematic diagram showing the middle connecting shaft in another gear position; Figure 8 for Figure 3 Front view; Figure 9 for Figure 3 Side view; Figure 10 This is a schematic diagram of the locking element in another embodiment.

[0021] Icons: 100 - Seat body; 200 - Support leg; 300 - Adjustable footrest; 310 - Pedal; 311 - Slot; 312 - Gear slot; 3120 - Transition section; 3121 - Gear section; 3122 - Protrusion; 313 - Connecting block; 314 - Carrier plate; 315 - Mounting slot; 320 - Connecting shaft; 330 - Clamping block; 331 - Eccentric perforation; 332 - Cylindrical structure; 340 - Locking assembly; 341 - Bolt; 342 - Nut; 343 - Eccentric cam; 344 - Handle; 350 - First anti-slip pad; 351 - Second anti-slip pad. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0029] refer to Figure 1 and Figure 2 This embodiment discloses a child safety seat, which includes a seat body 100, a support leg 200, and an adjustable footrest 300. The seat body 100 is the core of the child safety seat, forming the main area for the child to sit in, providing all-round support for the child's buttocks, back, head, and other torso, maintaining a correct sitting posture. The seat body 100 integrates a five-point or three-point seat belt system (including shoulder straps, lap belts, and crotch belts), which securely fixes the child in the seat through adjustable buckles and locking straps, preventing displacement or ejection during sudden braking or collisions.

[0030] The seat body 100 typically uses cushioning materials such as high-density foam and EPP (expanded polypropylene), combined with ergonomic structural design, to effectively absorb impact force in the event of a collision and disperse the impact energy to a larger area, reducing harm to the child's body.

[0031] The seat body 100 is equipped with ISOFIX interfaces, LATCH anchor points or seat belt guides to securely connect it to the vehicle seat, ensuring that the entire child safety seat is reliably fixed in the vehicle.

[0032] In addition, the main body of the seat 100 can also integrate user-friendly functions such as headrest height adjustment, backrest angle adjustment, retractable sunshade, cup holder, etc., to meet the needs of children of different ages and improve the convenience and comfort of use.

[0033] The support leg 200 is a component designed to enhance the safety of child safety seats. It primarily forms a triangular support structure through contact with the vehicle floor, improving the overall stability of the seat within the space and reducing swaying or displacement during rapid acceleration, braking, or cornering. Furthermore, during a collision, the support leg 200 can directly transfer some of the impact force to the vehicle floor, reducing the stress on ISOFIX connection points or the seatbelt system, lowering the risk of component failure, and improving overall safety performance. Additionally, in a frontal collision, the support leg 200, by contacting the vehicle floor and applying a reaction force, effectively limits the forward tilt angle of the seat due to inertia, reducing the extent of the child's head swinging forward and thus minimizing the risk of head and neck injuries.

[0034] The support leg 200 is designed with a two-section telescopic structure, allowing users to adjust its total length according to the distance from the vehicle floor to the bottom of the seat, ensuring reliable contact with the ground. Furthermore, the support leg 200 can be equipped with an indicator that displays green when the support leg 200 is adjusted to the correct length and in full contact with the ground, providing users with intuitive feedback on installation correctness.

[0035] refer to Figures 3 to 5 The adjustable foot pedal 300 includes a pedal 310, a connecting shaft 320, a clamping block 330, and a locking assembly 340; The pedal 310 is provided with a slot 311 and a shift slot 312. The opening of the slot 311 extends to the side of the pedal 310. The slot 311 is used for the child safety seat support leg 200 to be inserted. The two shift slots 312 are distributed on opposite sides of the slot 311 in the width direction of the slot. The clamping block 330 is hinged to the stop groove 312 via the connecting shaft 320. That is, the connecting shaft 320 passes through the stop groove 312, and the clamping block 330 is hinged to the connecting shaft 320. In this way, the clamping block 330 can be switched to the clamping position or away from the clamping position. The connecting shaft 320 can change position within the stop groove 312 to change the distance between the clamping block 330 and the bottom and / or inner wall of the slot 311. The locking assembly 340 is detachably connected to the two clamping blocks 330 so that the two clamping blocks 330 are held in the clamped position, thereby jointly pressing the support leg 200 into the slot 311.

[0036] As described above, since the pedal 310 has a through-slot 311 extending to the side, the support leg 200 can be directly inserted into the slot 311 from the side, making installation simple and quick. Symmetrical stop slots 312 are provided on both sides of the slot 311 in its width direction, and the clamping block 330 is hinged to the stop slot 312 via a connecting shaft 320, allowing the clamping block 330 to rotate around the connecting shaft 320. Then, the two clamping blocks 330 are detachably connected via a locking assembly 340. After the support leg 200 is inserted into the slot 311, the clamping blocks 330 on both sides simultaneously press the support leg 200 inward, achieving a stable clamping effect and preventing the adjustable pedal 300 from loosening or falling off during use, thus ensuring safety. At the same time, the detachable nature of the locking assembly 340 facilitates the quick installation and removal of the adjustable pedal 300, improving user convenience.

[0037] The shift groove 312, the clamping block 330, and the locking assembly 340 are all integrated on the pedal itself. Therefore, unlike the prior art, there is no need to open any mating holes on the support leg 200 to achieve height adjustment, thus avoiding damage to the support leg 200. The adjustable pedal 300 of this embodiment can flexibly change the distance between the clamping block 330 and the bottom and / or inner wall of the slot 311 by adjusting the position of the connecting shaft 320 in the shift groove 312, thereby effectively adapting to support legs 200 with different diameters or cross-sectional sizes. It is especially suitable for two-section support legs 200 with inconsistent upper and lower section sizes in the prior art, thereby realizing pedal height adjustment. Therefore, the adjustable pedal 300 of this embodiment can be directly installed on various existing support legs, greatly improving the versatility and compatibility of the adjustable pedal 300.

[0038] It should be noted that the so-called "inner wall" and "bottom" of the slot 311 refer to different orientation surfaces of the internal structure of the slot 311. Specifically, the "bottom" refers to the innermost wall surface in the depth direction of the slot 311, and the "inner wall" refers to the two opposite side walls in the width direction of the slot 311. There is an "open side" and a "closed side" between the two inner walls. The "closed side" is the "bottom" and the "open side" is the "slot opening".

[0039] For details, please refer to the following: Figure 5 and Figure 6 The gear slot 312 includes a transition section 3120 and at least two gear sections 3121 that are connected to the transition section 3120; one of the two adjacent gear sections 3121 is closer to the bottom of the slot 311 than the other; the connecting shaft 320 can switch from one gear section 3121 to any other gear section 3121 through the transition section 3120.

[0040] Thus, since the gear slot 312 includes a transition section 3120 and at least two gear sections 3121 connected thereto, and one gear section 3121 is closer to the bottom of the slot 311 than the other, the connecting shaft 320 can switch between different gear sections 3121 via the transition section 3120. This structure gives the clamping block 330 multiple selectable positions in the depth direction of the slot 311, thereby realizing multi-level adjustment of the distance between the clamping block 330 and the bottom of the slot 311. This multi-level adjustment mechanism can accurately match the outer contour of the support leg 200 under different diameters or cross-sectional dimensions, and is especially suitable for situations where the upper and lower sections of a two-section support leg 200 have inconsistent dimensions. Users can switch the connecting shaft 320 to the appropriate gear 3121 according to actual installation needs, so that the clamping blocks 330 on both sides clamp the support leg 200 at the optimal distance. This ensures a firm clamping while avoiding loosening due to excessive gaps or structural damage due to excessive tightness. For example, if the pedal 310 needs to be installed on a thicker area of ​​the support leg 200 (such as...), the user can switch the connecting shaft 320 to the appropriate gear 3121. This ensures a firm clamping while avoiding loosening due to excessive gaps or structural damage due to excessive tightness. Figure 1 When (as shown), the connecting shaft 320 is located Figure 7 The location shown is in a narrower area where the pedal 310 needs to be mounted on the support leg 200 (e.g., Figure 2 When (as shown), the connecting shaft 320 is located Figure 3 and Figure 4 The location shown.

[0041] Meanwhile, in conjunction with the connecting structure of the transition section 3120, users can switch gears simply by sliding the connecting shaft 320 without disassembling the adjustable pedal 300, achieving rapid optimization of the clamping position and improving installation efficiency and stability. This structure enhances the spatial adaptability and clamping reliability of the adjustable pedal 300, further improving the flexibility and comfort of use while ensuring safety.

[0042] Continue to refer to Figure 6 In this embodiment, along the direction from the bottom to the opening of the slot 311, one of two adjacent stop segments 3121 is closer to the inner wall of the slot 311 than the other. That is, the distance between each stop segment 3121 on the same side of the slot 311 and the slot 311 increases along the direction from the bottom to the opening, causing the position of the connecting shaft 320 relative to the slot 311 in the slot width direction to differ in different stop segments 3121. Thus, when the connecting shaft 320 switches to a stop segment 3121 closer to the inner wall of the slot 311, the hinge point of the clamping block 330 shifts inward, thereby changing its rotation trajectory and the clamping angle and force direction on the support leg 200, adapting to a thinner support leg 200; conversely, if the connecting shaft 320 is located in a stop segment 3121 farther from the inner wall, the clamping block 330 is offset outward, adapting to a thicker support leg 200.

[0043] Optionally, in this embodiment, the transition section 3120 is arc-shaped, and the gear slot 312 includes two gear segments 3121, which are respectively connected to the two ends of the transition section 3120.

[0044] This arc-shaped transition section 3120 forms a smooth and continuous connecting channel between the two gear sections 3121, allowing the connecting shaft 320 to slide smoothly along the arc trajectory when shifting gears, thus improving the smoothness of gear shifting and the user experience.

[0045] The two shift segments 3121 are located at opposite ends of the arc transition segment 3120. Because the two shift segments 3121 are staggered along both the depth and width of the slot 311, the position of the connecting shaft 320 in each shift segment 3121 has a clear offset. When the connecting shaft 320 is in the shift segment 3121 closest to the inner wall of the slot 311, the clamping block 330 retracts inward, suitable for the smaller diameter support leg segment 200. When switched to the other shift segment 3121 away from the inner wall, the clamping block 330 expands outward, effectively clamping the larger diameter support leg segment 200. This dual-shift layout accommodates typical size differences, covering the upper and lower segment specifications of mainstream two-section support legs 200 on the market.

[0046] Continue to refer to Figure 6 A protrusion 3122 is provided on the inner wall of the transition section 3120 near the gear section 3121, which plays a clear positioning and limiting role for the connecting shaft 320 during gear switching. When the connecting shaft 320 slides into a certain gear section 3121, the protrusion 3122 can effectively prevent it from accidentally sliding back to the transition section 3120 or moving to another gear without external force, thereby ensuring that the clamping block 330 always stays in the set clamping position during use, improving the stability and reliability of the clamping state.

[0047] Meanwhile, the raised 3122 structure provides clear tactile (such as a tactile feedback, a sense of positioning, or a gear shift) and auditory feedback (such as a clicking sensation) during user operation, allowing users to intuitively perceive whether the connecting shaft 320 has accurately entered the target gear, avoiding safety hazards such as insecure clamping or support failure due to incomplete positioning. This self-locking positioning mechanism eliminates the need for additional locking parts, simplifying the structure and enhancing the human-computer interaction experience.

[0048] The protrusion 3122 has a rounded surface, making its contact surface with the connecting shaft 320 smoother and more continuous. During the transition from the transition section 3120 to the gear position section 3121 or during the reverse shift, the rounded surface effectively guides the connecting shaft 320 smoothly over the protrusion 3122, reducing sliding resistance and preventing jamming, scratching, or stress concentration caused by sharp edges or abrupt changes in structure. This not only improves the smoothness of gear shifting but also reduces wear between the connecting shaft 320 and the gear position groove 312 during long-term use, extending the service life of the adjustable pedal 300.

[0049] Meanwhile, the rounded protrusion 3122 provides positioning functionality while also offering excellent tactile feedback. When the connecting shaft 320 rolls over the rounded surface and lands at the bottom of the gear position segment 3121, the user can feel a clear and gentle landing sensation, confirming that the gear is in place while avoiding discomfort or structural damage caused by hard impacts. This flexible positioning mechanism ensures clamping stability while enhancing the user-friendliness of the human-machine interface.

[0050] Of course, in some embodiments, the number of gear slots 312 can be more than three. The connecting shaft 320 can switch between gear segments 3121 that are misaligned in the depth and width of multiple slots 311, so that the effective clamping distance between the clamping block 330 and the bottom of the slot 311 can be adjusted in multiple levels and progressively to accommodate more support legs 200 of different thicknesses and improve versatility.

[0051] In addition to using the aforementioned gear segment 3121 and transition segment 3120 to achieve at least two gear levels, in some embodiments, the gear slot 312 can also be a straight groove, allowing the connecting shaft 320 to slide freely along a straight line within the groove. For example, in this case, the connecting shaft 320 can be a bolt structure. By adjusting the sliding position of the connecting shaft 320 within the gear slot 312, the distance between the clamping block 330 and the bottom of the slot 311 can be continuously and steplessly adjusted, thereby adapting to support legs of any diameter and achieving stepless gear adjustment (i.e., no fixed gear limit). Furthermore, if multiple gear levels need to be positioned, multiple positioning recesses (such as spherical recesses, elastic ball structures, etc.) can be provided within the straight gear slot 312 to offer a multi-gear feel, thus also achieving multi-gear adjustment.

[0052] Continue to refer to Figure 3 and Figure 5In this embodiment, a first anti-slip pad 350 is affixed to the bottom of the slot 311. A second anti-slip pad 351 is affixed to the side of the clamping block 330 that contacts the support leg 200. This allows the support leg 200 to form a high-friction contact interface with the bottom of the slot 311 and the clamping block 330 after it is inserted into the slot 311. This effectively increases the static friction between the support leg 200 and the pedal 310 and the clamping block 330, preventing relative slippage of the support leg 200 due to dynamic loads such as vibration, sudden braking, or turning during vehicle operation. This not only improves the connection stability between the adjustable footrest 300 and the support leg 200 but also further enhances the installation stability and safety of the entire child safety seat system.

[0053] The first anti-slip pad 350 and the second anti-slip pad 351 are typically made of materials with certain elasticity and cushioning properties (such as silicone, rubber or thermoplastic elastomers), which can protect the surface of the support leg 200 during clamping and prevent scratches, wear or stress concentration caused by direct contact between metal or hard plastic parts.

[0054] In addition, the first anti-slip pad 350 and the second anti-slip pad 351 can also compensate for the small gaps caused by manufacturing tolerances or slight deformation of the support leg 200, improve the clamping fit, and make the clamping force applied by the clamping block 330 more evenly transmitted to the support leg 200, thereby optimizing the overall stress state.

[0055] refer to Figure 8 and Figure 9 The pedal 310 includes an integrally formed connecting block 313 and a carrier plate 314. The connecting block 313 and the carrier plate 314 form an acute angle (e.g., 15°). The connecting block 313 is provided with a slot 311 and a stop slot 312. The carrier plate 314 is used to support the child's feet.

[0056] Thus, the connecting block 313, as the core functional area connecting to the support leg 200, centrally houses the adjustment and clamping structures such as the slot 311 and the gear slot 312, while the carrier plate 314 is dedicated to supporting the foot. The functional areas are clearly defined and the structure is compact. The one-piece molding design not only avoids the problems of loosening, abnormal noise, or weakening strength caused by splicing multiple parts, but also improves the overall structural rigidity and durability, ensuring that the adjustable foot pedal 300 remains stable and reliable in the event of a vehicle collision or emergency braking.

[0057] The acute-angled structure of the carrier plate 314 and the connecting block 313 allows the carrier plate 314 to tilt naturally upward, which better fits the posture of a child's legs hanging down when sitting in a car seat. This is more ergonomic, effectively supports the lower legs and feet, relieves the fatigue of the legs being suspended in the air during long-term sitting, and improves riding comfort.

[0058] The connecting shaft 320 can be made of rivets. Using rivets as the connecting shaft 320 not only results in a simple structure and low cost, but also convenient installation and reliable connection. The rivets can be used to directly and firmly hinge the clamping block 330 to the stop groove 312 area of ​​the pedal 310 through stamping or press riveting processes, eliminating the need for additional nuts 342, washers, or fasteners. This effectively simplifies the assembly process, improves production efficiency, and avoids the risk of failure due to loose threads or parts falling off.

[0059] Continue to refer to Figure 5 The locking assembly 340 can specifically use bolts 341 to connect two clamping blocks 330. More specifically, the locking assembly 340 includes a nut 342 (or an internally threaded hole) and a locking element, which includes the bolt 341 and an eccentric cam 343 with a handle 344. The two clamping blocks 330 have through holes or mounting holes at corresponding positions. The bolt 341 passes through one clamping block 330 and then the other clamping block 330 in sequence, and is tightened by the nut 342 at its end, or directly screwed into the pre-set internally threaded hole of the other clamping block 330. The head of the bolt 341 can be hinged to an eccentric cam 343 with a handle 344. Thus, in the initial state, the bolt 341 is not fully tightened, the eccentric cam 343 is in the open position, and the distance between the two clamping blocks 330 is relatively large, facilitating the insertion of the support leg 200 into the slot 311. Once the support leg 200 is in place, the user first tightens the bolt 341 to a moderate degree (pre-tightening), and then turns the handle 344 to make the eccentric cam 343 rotate around the pin. Due to the eccentric characteristics of the cam profile, its rotation will push the head of the bolt 341 to produce a small but effective axial displacement, further tightening the clamping blocks 330 on both sides, and achieving the final strong clamping.

[0060] When the foot pedal height needs to be adjusted, simply pry open the handle 344, the eccentric cam 343 will release the clamping block 330, and the clamping block 330 will leave the clamping position. Then, in conjunction with the position change of the connecting shaft 320 in the gear slot 312, it can move up and down on the two-stage telescopic support leg 200. After reaching the target position, pry the handle 344 back.

[0061] Furthermore, in some embodiments, the locking element can also be directly adopted. Figure 10 The bolt 341 shown does not require an eccentric cam 343 and a handle 344. By tightening the bolt 341, the two clamping blocks 330 are brought closer to the center of the slot 311, thereby clamping and fixing the support leg 200 embedded in the slot 311.

[0062] The card slot 311 has two inner sidewalls with mounting grooves 315, and the stop groove 312 is connected to the mounting groove 315; the clamping block 330 extends into the mounting groove 315, and the connecting shaft 320 also passes through the mounting groove 315 and the part of the clamping block 330 located in the mounting groove 315.

[0063] This design integrates a portion of the clamping block 330 into the pedal 310, effectively restricting its freedom of movement and limiting its rotation to around the connecting shaft 320. This design prevents axial movement or lateral shift of the clamping block 330 during use, ensuring precise and stable operation and significantly improving the mechanism's durability and reliability. Furthermore, the overall appearance is clean and simple, avoiding safety hazards associated with exposed moving parts (such as pinching fingers or snagging clothing), while also enhancing the product's aesthetics and durability.

[0064] Of course, in some embodiments, the clamping block 330 may also be directly hinged to the upper or lower surface of the pedal 310.

[0065] The portion of the clamping block 330 located in the mounting groove 315 is a cylindrical structure 332. The cylindrical structure 332 is provided with an eccentric through hole 331, and the connecting shaft 320 is rotatably inserted through the eccentric through hole 331.

[0066] Thus, when the clamping block 330 rotates around the connecting shaft 320, the position of its clamping end relative to the slot 311 will experience an amplified displacement effect due to the eccentric structure. This eccentric hinge design allows for a significant clamping stroke of the clamping block 330 on the support leg 200 with a small rotation angle, thereby improving clamping response sensitivity and adjustment accuracy. Simultaneously, the eccentric structure, combined with the mounting points of the connecting shaft 320 at different positions in the stop slot 312, can further expand the effective distance adjustment range between the clamping block 330 and the bottom of the slot 311, enhancing its adaptability to support legs of different diameters or cross-sectional shapes. Furthermore, the cylindrical structure 332 and the inner wall of the mounting groove 315 can form a good rotational mating surface, which helps reduce rotational friction, improves operational smoothness, and ensures structural stability and durability during long-term use.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An adjustable foot pedal, characterized in that, It includes a pedal (310), a connecting shaft (320), a clamping block (330), and a locking assembly (340). The pedal (310) is provided with a slot (311) and a shift slot (312). The opening of the slot (311) extends through to the side of the pedal (310). The slot (311) is used for the child safety seat support leg (200) to be inserted. The two shift slots (312) are distributed on opposite sides of the slot (311) in the width direction. The clamping block (330) is connected to the connecting shaft (320) and is rotatable relative to the pedal (310). The connecting shaft (320) passes through the gear slot (312). The connecting shaft (320) is able to change position within the gear slot (312) to change the distance between the clamping block (330) and the bottom and / or inner wall of the slot (311). The locking assembly (340) is detachably connected to the two clamping blocks (330) so that the two clamping blocks (330) together press the support leg (200) into the slot (311).

2. The adjustable foot pedal according to claim 1, characterized in that, The gear slot (312) includes a transition section (3120) and at least two gear sections (3121) that are connected to the transition section (3120). The connecting shaft (320) can be switched from one of the gear segments (3121) to any other gear segment (3121) via the transition section (3120); Wherein, one of the two adjacent gear segments (3121) is closer to the bottom of the slot (311) relative to the other; and / or, along the direction from the bottom of the slot (311) to the opening, one of the two adjacent gear segments (3121) is closer to the inner wall of the slot (311) relative to the other.

3. The adjustable foot pedal according to claim 2, characterized in that, The transition section (3120) is arc-shaped, and the gear slot (312) includes two gear segments (3121), which are respectively connected to the two ends of the transition section (3120).

4. The adjustable foot pedal according to claim 2, characterized in that, The inner wall of the transition section (3120) is provided with a protrusion (3122) near the gear section (3121).

5. The adjustable foot pedal according to claim 4, characterized in that, The protrusion (3122) has an arc-shaped surface structure.

6. The adjustable foot pedal according to claim 1, characterized in that, The bottom of the slot (311) is affixed with a first anti-slip pad (350); And / or, the side of the clamping block (330) that contacts the support leg (200) is covered with a second anti-slip pad (351).

7. The adjustable foot pedal according to claim 1, characterized in that, The pedal (310) includes an integrally formed connecting block (313) and a carrier plate (314). The connecting block (313) and the carrier plate (314) form an acute angle. The connecting block (313) is provided with the slot (311) and the gear slot (312). The carrier plate (314) is used to support the child's feet.

8. The adjustable foot pedal according to claim 1, characterized in that, The card slot (311) has mounting slots (315) on its two opposite inner sidewalls; the gear slot (312) is connected to the mounting slot (315); The clamping block (330) extends into the mounting groove (315), and the connecting shaft (320) also passes through the mounting groove (315) and the portion of the clamping block (330) located in the mounting groove (315).

9. The adjustable foot pedal according to claim 8, characterized in that, The portion of the clamping block (330) located in the mounting groove (315) is a cylindrical structure (332), and the cylindrical structure (332) is provided with an eccentric through hole (331). The connecting shaft (320) is rotatably inserted through the eccentric through hole (331).

10. A child safety seat, characterized in that, It includes a seat body (100), a support leg (200), and an adjustable footrest as described in any one of claims 1-9.

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