Footrest and child safety seat

Abstract

The application discloses a footrest and child safety seat, which is characterized in that a clamping groove for embedding a supporting leg is arranged on the footrest, two pressing blocks located at opposite sides of the clamping groove can press the supporting leg in the clamping groove when the two pressing blocks are in a pressing position, thereby realizing relative fixation of the supporting leg and the footrest through friction, and the locking assembly is detachably connected with the two pressing blocks, so that the pressing blocks can be locked in the pressing position, thereby ensuring reliable fixation of the connection between the footrest and the supporting leg; since the pressing blocks are movably arranged on the footrest, the locking assembly only needs to be loosened and the pressing blocks only need to be moved out of the pressing position, the supporting leg is pressed by the pressing blocks after the height of the footrest is adjusted, and the pressing blocks are locked in the pressing position through the locking assembly, so that stepless adjustment of the height of the footrest is realized, operation is simple, time and labor are saved, and the convenience and user experience are improved.

Description

Technical Field

[0001] This application relates to the field of maternal and infant product technology, and in particular to a foot pedal and child safety seat. Background Technology

[0002] Child safety seats, as essential devices for ensuring the safety of infants and toddlers while traveling in vehicles, are widely used in various types of vehicles. To ensure the comfort and safety of children during travel, the structural design of the seat, especially its support and adjustment mechanisms, is particularly important. Among these, the footrest, as a key component supporting the child's legs and improving riding comfort, directly impacts the user experience with its ease of height adjustment and structural stability.

[0003] Most child safety seats on the market today typically have multiple positioning holes spaced along the length of the support leg to adjust the footrest height. The footrest itself has matching inserts or positioning pins; by inserting the inserts into different positioning holes, the footrest is secured at different heights. After the inserts are inserted, additional fasteners (such as bolts, nuts, or clamps) are usually needed to tighten them to ensure the footrest does not loosen or slip during use.

[0004] However, the above method of adjusting the foot pedal height requires loosening the fasteners, disengaging the insert from the previous positioning hole, moving the foot pedal to the target height, aligning the insert with the corresponding positioning hole, and finally tightening the fastening bolts again. This process involves numerous steps, making it particularly inconvenient in poorly lit or confined spaces inside a vehicle, significantly reducing the user experience. Utility Model Content

[0005] The purpose of this application is to provide a footrest and child safety seat that allows for stepless adjustment of the footrest height. Users can freely set the optimal support position according to the child's height, leg length, and sitting posture, providing more precise and personalized comfort support. Moreover, it is simple to operate, saves time and effort, and improves the convenience and user experience.

[0006] The embodiments of this application can be implemented as follows:

[0007] In a first aspect, this utility model provides a foot pedal for a child safety seat, including a pedal, a clamping block, and a locking assembly;

[0008] The pedal is provided with a slot for the support leg of a child safety seat to be inserted.

[0009] The two clamping blocks are located on opposite sides of the slot;

[0010] The clamping block is movably disposed on the pedal so as to switch to or away from the clamping position. When the clamping block is in the clamping position, it can press the support leg into the slot.

[0011] The locking assembly is used for detachable connection with the two clamping blocks so that both clamping blocks are held in the clamping position.

[0012] In an optional embodiment, the slot of the card slot extends through to the side of the pedal;

[0013] The clamping block is hinged to the pedal. When the clamping block is in the clamping position, the clamping block and the bottom of the slot are opposite each other in the depth direction of the slot.

[0014] In an optional embodiment, mounting grooves are provided on both opposite side walls of the card slot;

[0015] The clamping block extends partially into the mounting groove, and the portion of the clamping block extending into the mounting groove is hinged to the pedal.

[0016] In an optional embodiment, the two clamping blocks are a first clamping block and a second clamping block, wherein the first clamping block is provided with a clearance hole;

[0017] The locking assembly includes a connecting rod and a locking member. One end of the connecting rod is connected to the locking member, and the other end is detachably connected to the second pressing block.

[0018] When both the first pressing block and the second pressing block are in the pressing position, the connecting rod passes through the clearance hole, and the locking member abuts against the side of the first pressing block away from the second pressing block.

[0019] In an optional embodiment, the locking member includes a connected cylindrical cam and a handle. The cylindrical cam is hinged to the connecting rod, and the handle is used to drive the cylindrical cam to rotate relative to the connecting rod under the action of an external force, so that the cylindrical cam abuts against the first clamping block or separates from the first clamping block.

[0020] In an optional embodiment, the cylindrical cam is an eccentric wheel with its hinge center parallel to its own central axis.

[0021] In an optional embodiment, the second clamping block is provided with a through hole, and the connecting rod passes through the through hole;

[0022] The locking assembly also includes a nut, which is threaded onto the connecting rod and abuts against the side of the second clamping block opposite to the first clamping block.

[0023] In an optional embodiment, the through hole is a countersunk through hole, and the nut is located inside the through hole.

[0024] In an optional embodiment, the areas on the inner walls of the clamping block and the slot that are used to contact the support leg are roughened.

[0025] In an optional embodiment, the foot pedal further includes an adapter pad that is adapted to the shape of the support leg, the adapter pad being selectively fixed to the inner wall of the slot.

[0026] Secondly, this utility model provides a child safety seat, including a seat body, a support leg, and a footrest as described in any of the foregoing embodiments;

[0027] The support leg is connected to the seat body and is embedded in the slot;

[0028] The two clamping blocks abut against the support leg.

[0029] Compared with the prior art, the beneficial effects of the embodiments of this application include, for example:

[0030] By providing slots on the pedal for the support leg to be inserted, two clamping blocks located on opposite sides of the slots can press the support leg into the slots when they are in the clamping position. This achieves relative fixation between the support leg and the pedal through friction. The locking assembly is detachably connected to the two clamping blocks, which can lock the clamping blocks in the clamping position to prevent them from loosening or detaching under vehicle vibration or impact. This ensures a reliable connection between the pedal and the support leg, significantly reducing the safety risks caused by connection failure. Since the clamping blocks are movable on the pedal, users only need to loosen the locking assembly and move the clamping blocks out of the clamping position. After adjusting the pedal height, the clamping blocks can be pressed against the support leg again and locked in the clamping position by the locking assembly. This allows for stepless adjustment of the pedal height. Users can freely set the optimal support position according to the child's height, leg length, and riding posture, providing more precise and personalized comfort support. Moreover, the operation is simple, time-saving, and labor-saving, improving convenience and user experience. Attached Figure Description

[0031] 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.

[0032] Figure 1 This is a schematic diagram of a child safety seat according to an embodiment of this application;

[0033] Figure 2 for Figure 1 One of the schematic diagrams showing the middle foot pedal in the locked position with the clamping block in place;

[0034] Figure 3 for Figure 1 Schematic diagram two showing the middle foot pedal in the locked position with the clamping block in the middle position;

[0035] Figure 4 for Figure 1 Schematic diagram three showing the middle foot pedal in the locked position with the pressure block in place;

[0036] Figure 5 for Figure 1 One of the schematic diagrams showing the middle foot pedal after the clamping block has left the locking position;

[0037] Figure 6 for Figure 1 The second diagram shows the middle foot pedal after the clamping block has left the locking position;

[0038] Figure 7 for Figure 6 An explosion diagram;

[0039] Figure 8 for Figure 7 Schematic diagram of the combined structure of the middle locking component and the second clamping block;

[0040] Figure 9 for Figure 1 Schematic diagram four showing the middle foot pedal in the locked position with the clamping block in place;

[0041] Figure 10 for Figure 1 The third diagram shows the foot pedal after the clamping block has left the locking position.

[0042] Icons: 100-Foot pedal; 110-Pedal; 111-Slot; 112-Mounting slot; 120-Clamping block; 121-First clamping block; 1210-Allowing hole; 122-Second clamping block; 1220-Through hole; 130-Locking assembly; 131-Connecting rod; 132-Locking element; 1320-Cylindrical cam; 1321-Handle; 133-Nut; 140-Hinge shaft; 200-Seat body; 300-Support leg. Detailed Implementation

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] refer to Figure 1 This application discloses a child safety seat, including a seat body 200, a support leg 300, and a footrest 100. The seat body 200 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 200 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.

[0051] The seat body 200 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.

[0052] The bottom of the seat body 200 is equipped with ISOFIX interfaces, LATCH anchor points or seat belt guides for securely connecting it to the vehicle seat, ensuring that the entire child safety seat is reliably fixed in the vehicle.

[0053] In addition, the main body of the seat 200 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.

[0054] The support leg 300 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 300 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 300, by contacting the vehicle floor and applying a reaction force, effectively limits the forward tilt angle of the seat due to inertia, significantly reducing the extent of forward head movement in children and thus minimizing the risk of head and neck injuries.

[0055] The support leg 300 can be designed as a telescopic structure, allowing users to adjust its 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 300 can be equipped with an indicator that displays green when the support leg 300 is adjusted to the correct length and in full contact with the ground, providing users with intuitive feedback on installation correctness.

[0056] refer to Figures 2 to 4 The foot pedal 100 includes a pedal 110, a clamping block 120, and a locking assembly 130;

[0057] The foot pedal 110 is provided with a slot 111 for the child safety seat support leg 300 to be inserted;

[0058] The two clamping blocks 120 are located on opposite sides of the slot 111;

[0059] The clamping block 120 is movably disposed on the pedal 110 so as to be switched to or away from the clamping position. When the clamping block 120 is in the clamping position, it can clamp the support leg 300 in the slot 111.

[0060] The locking assembly 130 is used for detachable connection with the two clamping blocks 120 so that both clamping blocks 120 are held in the clamped position.

[0061] As described above, by providing a slot 111 on the pedal 110 for the support leg 300 to be inserted, the two clamping blocks 120 located on opposite sides of the slot 111 can press the support leg 300 into the slot 111 when they are in the clamping position. This achieves relative fixation between the support leg 300 and the pedal 110 through friction. The locking assembly 130 is detachably connected to the two clamping blocks 120, which can lock the clamping blocks 120 in the clamping position, preventing the clamping blocks 120 from loosening or disengaging under vehicle vibration or impact. This ensures a reliable connection between the pedal 100 and the support leg 300, significantly reducing the risk of connection failure. The safety risks caused by this feature are mitigated by the fact that the clamping block 120 is movable on the pedal 110. Therefore, simply loosen the locking assembly 130 and move the clamping block 120 out of its clamping position. After adjusting the height of the pedal 110, press the clamping block 120 back onto the support leg 300 and lock it in place using the locking assembly 130. This allows for stepless adjustment of the pedal 110 height, enabling users to freely set the optimal support position based on the child's height, leg length, and sitting posture, providing more precise and personalized comfort support. Furthermore, the operation is simple, time-saving, and labor-saving, enhancing convenience and user experience.

[0062] Furthermore, since the clamping block 120 and locking assembly 130 are integrated into the pedal 110, the overall structure is compact. The foot pedal 100, as an independent modular component, can be quickly installed or removed from the support leg 300 via the slot 111 and clamping structure, facilitating user cleaning, replacement, and interchangeability between different seat models, thus improving the product's maintainability and flexibility. At the same time, the elimination of numerous positioning holes or exposed threaded structures on the support leg 300 simplifies the manufacturing process, reduces production costs, and enhances the product's neatness and aesthetics.

[0063] Optionally, the groove of the slot 111 extends to the side of the pedal 110, wherein the depth direction of the slot 111 can be along the width direction of the pedal 110, and its bottom is located inside the pedal 110. The clamping block 120 is hinged to the pedal 110 via a hinge shaft 140. When the clamping block 120 rotates around the hinge shaft 140 to the clamping position, at least a portion of the clamping block 120 is opposite to the bottom of the slot 111 in the depth direction of the slot 111, forming an effective reaction surface.

[0064] Thus, the slot of the slot 111 extends to the side of the pedal 110, facilitating the installation and connection of the locking assembly 130. Simultaneously, the pedal 110, when connected to the support leg 300, forms a cantilever structure. The pedal 110 can be installed either forward (i.e., the pedal 110 is fastened to the rear of the support leg 300 via the slot 111) or backward (i.e., the pedal 110 is fastened to the front of the support leg 300 via the slot 111) depending on the vehicle's interior space. The clamping block 120 is hinged, forming a lever mechanism that allows for strong clamping of the support leg 300 with relatively small operating force, achieving effortless transmission. When the clamping block 120 rotates to the clamping position, it is aligned with the bottom of the slot 111 in the depth direction, ensuring that the reaction force borne by the clamping block 120 when clamping the support leg 300 is effectively transmitted through its body to the bottom of the slot 111. The bottom of the slot 111 serves as a rigid support surface, which can effectively resist clamping force and prevent the clamping block 120 from deforming or failing due to excessive force, thus significantly improving the load-bearing capacity and long-term reliability of the structure.

[0065] The shape of the slot 111 can be U-shaped as shown in the attached figures, or it can be other shapes, as long as they are compatible with the shape of the support leg 300. In this way, the inner wall of the slot 111 and the clamping block 120 contact the various sides of the support leg 300 together to achieve all-round tight fixation of the support leg 300, resulting in a better fixation effect.

[0066] refer to Figures 5 to 7 To facilitate the installation of the clamping block 120, mounting grooves 112 are provided on both opposite side walls of the slot 111. Part of the clamping block 120 extends into the mounting groove 112, and the portion of the clamping block 120 extending into the mounting groove 112 is hinged to the pedal 110. When the clamping block 120 rotates around the hinge axis 140 to the clamping position, its free end swings towards the center of the slot 111 to clamp the support leg 300 embedded in the slot 111. When it rotates away from the clamping position, the free end swings outward to release the clamping force on the support leg 300, making it easier for the foot pedal 100 to slide and adjust along the support leg 300.

[0067] This design integrates the hinge structure of the clamping block 120 and the slot 111 inside the pedal 110, concealing the locking assembly 130 and the moving parts of the clamping block 120 within the pedal 110 body. This effectively restricts the degree of freedom of movement of the clamping block 120, allowing it to rotate only around the hinge axis 140 at a predetermined angle. This design prevents axial movement or lateral displacement of the clamping block 120 during use, ensuring precise and stable operation and significantly improving the durability and reliability of the mechanism. Furthermore, the overall appearance is simple, avoiding safety hazards caused by exposed moving parts (such as pinching hands or snagging clothing), while also enhancing the product's aesthetics and durability.

[0068] Of course, in some embodiments, the clamping block 120 may be directly hinged to the upper or lower surface of the pedal 110; the clamping block 120 may also be disposed on the pedal 110 by means of linear sliding, and the slot 111 may also be formed in the middle of the pedal 110.

[0069] Continue to refer to Figure 2 , Figure 3 , Figure 5 and Figure 7 The two clamping blocks 120 are a first clamping block 121 and a second clamping block 122, respectively. The first clamping block 121 is provided with a clearance hole 1210, which passes through the first clamping block 121.

[0070] The locking assembly 130 includes a connecting rod 131 and a locking member 132. One end of the connecting rod 131 is connected to the locking member 132, and the other end is connected to the second pressing block 122.

[0071] When both the first clamping block 121 and the second clamping block 122 are in the clamping position, the free movable ends of the two clamping blocks 120 move toward the center of the slot 111, thereby clamping the support leg 300. At this time, the connecting rod 131 rotates in a circular motion with the rotation of the second clamping block 122. The connecting rod 131 passes through the clearance hole 1210, and the locking member 132 abuts against the side of the first clamping block 121 that is away from the second clamping block 122.

[0072] Thus, after adjusting the foot pedal 100 to the target height, the user rotates the clamping block 120 to the clamping position. The connecting rod 131 then passes through the clearance hole 1210, mechanically linking the first clamping block 121 and the second clamping block 122 through the connecting rod 131. When the locking member 132 abuts against the outside of the first clamping block 121, a pull rod-type locking structure is formed, ensuring that the two clamping blocks 120 are subjected to force synchronously during clamping, resulting in a uniform clamping force distribution. This effectively avoids the problem of the support leg 300 being tilted or the clamping block 120 being subjected to uneven force due to clamping on one side, improving the stability and reliability of clamping. Moreover, the entire adjustment process requires no additional operating tools or complex actions, achieving the convenient function of locking as soon as it is in place. The operation is intuitive and the response is rapid.

[0073] refer to Figure 7 and Figure 8 The locking member 132 includes a cylindrical cam 1320 and a handle 1321 connected together. The cylindrical cam 1320 is hinged to the connecting rod 131. The handle 1321 is used to drive the cylindrical cam 1320 to rotate relative to the connecting rod 131 under the action of external force, so that the cylindrical cam 1320 abuts against the first pressing block 121 or separates from the first pressing block 121.

[0074] The cylindrical cam 1320 can be an eccentric wheel, meaning the cylindrical cam 1320 is an eccentric cylinder whose rotational hinge center is offset from the geometric center (i.e., the central axis). When the eccentric wheel rotates around its rotational axis, the distance between its outer circumference and the rotational center changes periodically. This allows for the clamping or releasing of the first clamping block 121 during rotation. Maximum clamping force is achieved when the side with the maximum eccentric radius faces the first clamping block 121; release is achieved when the side with the minimum eccentric radius faces the first clamping block 121.

[0075] In addition, the cylindrical cam 1320 may also have a circumferentially undulating outer contour, such as an elliptical outer contour. When the cam rotates, the relatively protruding part of its outer contour can abut against the surface of the first pressing block 121 and apply a pressing force to lock the pressing block 120. As the cylindrical cam 1320 continues to rotate, it separates from the first pressing block 121, thereby unlocking.

[0076] Thus, when the user holds and rotates the handle 1321, the cylindrical cam 1320 rotates accordingly. The part of its outer contour furthest from the center of rotation gradually rotates to contact and press against the surface of the first clamping block 121 opposite to the second clamping block 122, thereby firmly pressing the first clamping block 121 against the support leg 300. At the same time, through the pulling force of the connecting rod 131, the second clamping block 122 is kept in a clamped state, achieving double-sided locking (see reference). Figure 9 ).

[0077] When it is necessary to release the foot pedal 100 for height adjustment, the user rotates the handle 1321 in the opposite direction, causing the portion of the cylindrical cam 1320 closest to the center of rotation to turn towards the first clamping block 121. The cam disengages from the surface of the first clamping block 121, releasing the clamping force (see reference). Figure 10 At this point, the user can pry the two clamping blocks 120 outward from the clamping position, and the support leg 300 can slide freely in the slot 111.

[0078] This design employs a cam mechanism as the locking actuator, utilizing the change in lift of the cam profile to convert the rotational motion of the handle 1321 into a vertical clamping force on the first clamping block 121. The cam mechanism features mechanical force amplification and rapid release; the user only needs to apply a small operating force to generate a large clamping force, ensuring a secure and reliable connection between the foot pedal 100 and the support leg 300. Furthermore, switching between locking and releasing can be achieved simply by rotating the handle 1321 by a certain angle, providing a rapid response and facilitating user adjustment of the overall height of the foot pedal 100.

[0079] It should be noted that since the pedal 110 is fixed relative to the support leg 300 by using a clamping connection method of clamping the support leg 300, after long-term use, the clamping force of the two clamping blocks 120 on the support leg 300 may decrease and the clamping effect may deteriorate due to wear of parts, fatigue of elastic elements or loosening of connections. If the clamping effect deteriorates, it will affect the stability of the pedal 110 fixed on the support leg 300.

[0080] Therefore, in this embodiment, reference is continued. Figure 7 and Figure 8 The second clamping block 122 is provided with a through hole 1220; the connecting rod 131 passes through the through hole 1220; the locking assembly 130 also includes a nut 133, which is threadedly fitted outside the connecting rod 131 and abuts against the side of the second clamping block 122 away from the first clamping block 121.

[0081] In this way, when the gripping effect of the pedal 100 deteriorates over time, tightening the nut 133 will pull the connecting rod 131 slightly away from the first clamping block 121. The nut 133 and the locking element 132 will move closer to each other, thereby compensating for the gap, restoring and enhancing the clamping force of the clamping block 120, and re-optimizing the locking performance, effectively extending the service life of the pedal 100 and reducing maintenance costs.

[0082] The through hole 1220 can be a countersunk hole, which allows the nut 133 to be recessed into the through hole 1220. At this time, the nut 133 abuts against the stepped structure inside the countersunk hole, so that the second clamping block 122 is not exposed, thus improving the appearance quality.

[0083] Of course, in embodiments not shown, the through hole 1220 can also be a light hole with a constant diameter, in which case the nut 133 abuts against the outer surface of the first clamping block 121.

[0084] It should also be noted that the shape of the through hole 1220 can be a polygon that matches the shape of the nut 133, such as a hexagon, so that when tightening the nut 133, the connecting rod 131 can be rotated directly without the need for external tools to hold the nut 133.

[0085] In some embodiments, the areas on the inner walls of the clamping block 120 and the slot 111 that are used to contact the support leg 300 are roughened, for example by machining, chemical treatment, coating treatment, etc. Machining is to use sandblasting, knurling, milling texture, laser etching, etc. to form a uniform uneven structure on the surface; chemical treatment is to use acid etching, alkaline etching, etc. to form a micro-rough surface; coating treatment is to spray a high friction coefficient coating (such as rubber particle coating, polyurethane coating, or ceramic particle coating), or to use a material with high friction properties (such as TPE, silicone, etc.) to cover or insert the clamping block 120 and the slot 111.

[0086] The surface texture created through roughening treatment increases the static and dynamic friction coefficients between the clamping block 120 and the support leg 300, and between the slot 111 and the support leg 300, thus increasing the frictional force between them and providing stronger anti-slip capability under the same clamping force. Even under frequent vehicle starts and stops, rapid acceleration, or bumpy road conditions, it can effectively suppress the axial sliding or twisting of the pedal 100 along the support leg 300, ensuring that the pedal 100 is always fixed at the preset height, improving riding safety and comfort. Moreover, under the same anti-slip performance requirements, due to the increased friction coefficient, the required clamping force of the clamping block 120 can be reduced accordingly, thereby reducing the stress load on components such as the connecting rod 131, nut 133, and hinge point, reducing structural deformation and fatigue damage, and extending the service life of the overall mechanism.

[0087] In some embodiments not shown, the foot pedal 100 also includes an adapter pad that adapts to the shape of the support leg 300. The adapter pad can be selectively fixed to the inner wall of the slot 111. For example, the adapter pad can be fixed inside the slot 111 by means of screw connection, magnetic connection or snap-on connection. In this way, different adapter pads can be fixed in the slot 111 or no adapter pad can be placed, depending on the cross-sectional shape and size of the support leg 300. This ensures that the support leg 300 of any model can be held tightly by the pedal 110 and the clamping block 120 in all directions, ensuring the fixing effect. This realizes the flexible adaptation of the foot pedal 100 device to support legs 300 of different shapes, which significantly improves the versatility, compatibility and ease of use of the product.

[0088] The working principle of the pedal 100 in this application is illustrated below:

[0089] I. Initial Installation Process

[0090] 1. Select the appropriate pad:

[0091] Users can select a matching pad from the accessories based on the cross-sectional shape (such as rectangular, U-shaped, circular, etc.) of the child safety seat support leg 300 they are using.

[0092] 2. Install the adapter pads:

[0093] The selected adapter pad is detachably fixed to the inner wall of the slot 111 of the pedal 110 by means of buckles, magnets or screws, ensuring that its inner contour fits precisely with the shape of the support leg 300 to form a stable support surface.

[0094] 3. Embedded support leg 300:

[0095] Align the slot 111 on the pedal 110 with the support leg 300 of the child safety seat, and insert the support leg 300 horizontally into the slot 111 until the side of the support leg 300 is close to the bottom of the slot 111. At this point, the support leg 300 is located between the two clamping blocks 120, but is not yet clamped.

[0096] Of course, if the shape and size of the slot 111 are exactly compatible with the shape and size of the support leg 300, then the first and second steps in the initial installation process can be skipped.

[0097] II. Height Adjustment and Locking Process

[0098] 1. Manual sliding adjustment:

[0099] The user holds the pedal 110 and slides it up and down along the support leg 300 to adjust the foot pedal 100 to the target height suitable for the child's leg length, achieving stepless continuous adjustment.

[0100] 2. Perform the locking operation:

[0101] The user operates the handle 1321, which drives the cylindrical cam 1320 connected to it to rotate around the hinge point of the connecting rod 131.

[0102] As the handle 1321 rotates, the highest point (at its maximum radius) of the cylindrical cam 1320 gradually turns and abuts against the outer side of the first clamping block 121. Under the action of the cam thrust, the first clamping block 121 rotates inward around its hinge axis 140, and its free-moving end presses against the support leg 300.

[0103] Since the first clamping block 121 is mechanically linked to the second clamping block 122 through the connecting rod 131 (the connecting rod 131 passes through the clearance hole 1210 of the first clamping block 121 and is fixed to the second clamping block 122 by the nut 133), the rotation of the first clamping block 121 drives the connecting rod 131 to generate tension, which synchronously pulls the second clamping block 122 to rotate inward, so as to achieve synchronous clamping on both sides.

[0104] Finally, the two clamping blocks 120 are in close contact with the outer wall of the support leg 300, and the inner wall of the adapter pad (if any) and the slot 111 fits against the side wall of the support leg 300 to form a 360-degree fixation.

[0105] III. Release and Disassembly Process

[0106] 1. Perform the release operation:

[0107] The user reverses the lever 1321 to rotate the cam, and its lowest point (at the smallest radius) turns towards the first clamping block 121, releasing the clamping force on the first clamping block 121.

[0108] 2. The clamping block 120 automatically opens:

[0109] The user can rotate the first clamping block 121 and the second clamping block 122 outward to move them away from the clamping position. The clamping block 120 separates from the support leg 300, and the support leg 300 returns to its sliding state.

[0110] 3. Slide to disassemble or remove as a whole:

[0111] If only height adjustment is needed, the user can slide the pedal 110 to the new position and repeat the locking operation. If complete disassembly is required, if the slot 111 is located in the middle of the pedal 110, the pedal 110 can be slid along the support leg 300 until it is completely detached from the bottom of the support leg 300. If the slot 111 passes through the edge of the pedal 110, after the two clamping blocks 120 open, the pedal 110 can be pulled away from the support leg 300 to complete the disassembly.

[0112] IV. Maintenance and Preload Adjustment

[0113] When the clamping force decreases and the gripping effect deteriorates after long-term use, if the through hole 1220 is a polygonal countersunk hole, the user can directly screw on the connecting rod 131. If the through hole 1220 is a circular smooth hole, the user can use a tool (such as a wrench) to further tighten the nut 133 at the end of the connecting rod 131. The nut 133 gradually moves closer to the locking member 132 to pull the connecting rod 131 to make a slight movement, compensating for the gap caused by wear. This restores and enhances the clamping force of the two clamping blocks 120 on the support leg 300, realizing adjustable repair of the clamping performance.

[0114] 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. A foot pedal for a child safety seat, characterized in that, It includes a pedal (110), a clamping block (120), and a locking assembly (130); The pedal (110) is provided with a slot (111) for the child safety seat support leg (300) to be inserted; The two clamping blocks (120) are located on opposite sides of the slot (111); The pressing block (120) is movably disposed on the pedal (110) so as to be able to switch to the pressing position or leave the pressing position. When the pressing block (120) is in the pressing position, it can press the support leg (300) into the slot (111). The locking assembly (130) is detachably connected to the two clamping blocks (120) so that both clamping blocks (120) are held in the clamping position.

2. The foot pedal according to claim 1, characterized in that, The slot of the card slot (111) extends through to the side of the pedal (110); The clamping block (120) is hinged to the pedal (110). When the clamping block (120) is in the clamping position, the bottom of the clamping block (120) and the groove (111) are opposite to each other in the groove depth direction of the groove (111).

3. The foot pedal according to claim 2, characterized in that, The card slot (111) has mounting slots (112) on both opposite side walls; The clamping block (120) extends into the mounting groove (112), and the portion of the clamping block (120) extending into the mounting groove (112) is hinged to the pedal (110).

4. The foot pedal according to claim 1, characterized in that, The two clamping blocks (120) are a first clamping block (121) and a second clamping block (122), respectively. The first clamping block (121) is provided with a clearance hole (1210). The locking assembly (130) includes a connecting rod (131) and a locking member (132). One end of the connecting rod (131) is connected to the locking member (132), and the other end is detachably connected to the second pressing block (122). When both the first pressing block (121) and the second pressing block (122) are in the pressing position, the connecting rod (131) passes through the clearance hole (1210), and the locking member (132) abuts against the side of the first pressing block (121) away from the second pressing block (122).

5. The foot pedal according to claim 4, characterized in that, The locking member (132) includes a cylindrical cam (1320) and a handle (1321) connected together. The cylindrical cam (1320) is hinged to the connecting rod (131). The handle (1321) is used to drive the cylindrical cam (1320) to rotate relative to the connecting rod (131) under the action of external force, so that the cylindrical cam (1320) abuts against the first pressing block (121) or separates from the first pressing block (121).

6. The foot pedal according to claim 5, characterized in that, The cylindrical cam (1320) is an eccentric wheel whose hinge center is parallel to its own central axis.

7. The foot pedal according to any one of claims 4-6, characterized in that, The second clamping block (122) is provided with a through hole (1220), and the connecting rod (131) passes through the through hole (1220); The locking assembly (130) also includes a nut (133) which is threaded onto the connecting rod (131) and abuts against the side of the second clamping block (122) away from the first clamping block (121).

8. The foot pedal according to claim 7, characterized in that, The through hole (1220) is a countersunk hole, and the nut (133) is located inside the through hole (1220).

9. The foot pedal according to claim 1, characterized in that, The areas on the inner walls of the clamping block (120) and the slot (111) that are used to contact the support leg (300) are roughened. And / or, The foot pedal also includes an adapter pad that is adapted to the shape of the support leg (300), and the adapter pad can be selectively fixed to the inner wall of the slot (111).

10. A child safety seat, characterized in that, Includes a seat body (200), support legs (300), and a footrest as described in any one of claims 1-9; The support leg (300) is connected to the seat body (200) and is embedded in the slot (111); The two clamping blocks (120) abut against the support leg (300).

Images