Support leg for a child safety seat and child safety seat

Abstract

The utility model discloses a support leg for children safety seat and children safety seat belong to children safety seat technical field, the support leg includes a upper leg body, a lower leg body and a foot pad unit, the upper leg body has an upper leg cavity, the lower leg body has a lower leg cavity, the top of lower leg body is adjustably installed in the upper leg cavity of upper leg body, the foot pad unit includes a foot pad assembly and at least one elastic support assembly, the top of foot pad assembly is inserted into the lower leg cavity of lower leg body, the elastic support assembly is connected with foot pad assembly and lower leg body, so that foot pad assembly is adjustably installed in lower leg body. When the vehicle travels to the bumpy road section, the foot pad assembly is always close to the foot pedal area of the vehicle, so as to avoid the noise such as abnormal sound.

Description

Technical Field

[0001] This utility model relates to the field of children's products technology, and in particular to a support leg for a child safety seat and a child safety seat. Background Technology

[0002] A child safety seat is a device installed on the rear seat of a vehicle to provide a comfortable riding environment for children. It consists of a seat body and support legs mounted on the seat body. After the seat body is placed on the rear seat of the vehicle and fixed to the vehicle body, the support legs rest against the footwell of the vehicle. When the vehicle brakes, the support legs can support the seat body and prevent the seat body from tilting forward. For example, in Chinese utility model patent CN211543324U, the inventor disclosed a support body for a child safety seat, which includes a support base, an outer aluminum tube, a support leg stop plate, and an inner aluminum tube. The outer aluminum tube is located in the lower part of the support base, and the support leg stop plate is located at the lower end of the outer aluminum tube. The outer aluminum tube has a sliding groove to facilitate the movement of the inner aluminum tube. The inner aluminum tube is located inside the outer aluminum tube and can move up and down through the sliding groove. The lower part of the inner aluminum tube extends out of the outer aluminum tube and is located outside the outer aluminum tube. The support leg stop plate can adjust the length of the part of the inner aluminum tube that extends out of the outer aluminum tube. The bottom of the inner aluminum tube has a support leg pad and a support leg buffer pad. When the support leg buffer pad contacts the ground, the support leg buffer pad, the support leg pad, and the inner aluminum tube immediately generate an upward force. The support leg stop plate, which was just pushed out, also resets when the large aluminum tube fixing ring resets, and its lower end is inserted into the groove of the inner aluminum tube. The inner aluminum tube and the outer aluminum tube are subjected to an upward force as a whole. The outer aluminum tube is nested in the support leg plastic fixing block. After the relative positions of the inner and outer aluminum tubes are adjusted, the support leg stop plate is used to fix them. Due to limitations in processing precision and assembly errors, in existing support legs, even when the support leg stop plate fixes the inner and outer aluminum tubes, there is still a small amount of play between the inner and outer aluminum tubes and the support leg stop plate. This causes them to move up and down and collide during vehicle operation. The collisions not only produce abnormal noises but also affect the service life of the support leg. More importantly, prolonged movement and collisions between the inner and outer aluminum tubes and the support leg stop plate will further increase the play between them, leading to even greater up-and-down movement and more intense collisions. In addition, after the inner and outer aluminum tubes are fixed by the support leg stop plate, the support leg stop plate, the inner and outer aluminum tubes form a structural component. When the vehicle is driving on a bumpy road, this structural component as a whole will lift off the ground as the vehicle moves up and down (that is, the support leg buffer pad leaves the foot area of ​​the vehicle), causing the support leg buffer pad and the foot area of ​​the vehicle to collide with each other and produce abnormal noise. Utility Model Content

[0003] One objective of this invention is to provide a support leg for a child safety seat and a child safety seat, wherein the elastic support component of the foot pad unit of the support leg connects the foot pad component and the lower leg body, so that the foot pad component is mounted on the lower leg body in a way that allows it to float up and down. When the vehicle is traveling on a bumpy road, the elastic support component can compensate for the relative movement between the upper leg body and the lower leg body, reducing the amplitude of the up-and-down movement of the upper leg body and the lower leg body, which helps to reduce abnormal noise and protect the reliability of the support leg.

[0004] One objective of this invention is to provide a support leg for a child safety seat and a child safety seat, wherein the foot pad assembly is mounted on the lower leg body in a way that allows it to float up and down. When the vehicle is traveling on bumpy roads, the elastic support assembly allows the foot pad assembly to always be in close contact with the foot area of ​​the vehicle, so as to avoid the support leg colliding with the foot area of ​​the vehicle, thereby helping to reduce abnormal noise.

[0005] According to one aspect of the present invention, a support leg for a child safety seat is provided, comprising: An upper leg body, wherein the upper leg body has an upper leg cavity; A lower leg body, wherein the lower leg body has a lower leg cavity, and the top of the lower leg body is adjustablely mounted to the upper leg cavity of the upper leg body; and A foot pad unit, wherein the foot pad unit includes a foot pad assembly and at least one elastic support assembly, the top of the foot pad assembly extending into the lower leg cavity of the lower leg body, and the elastic support assembly connecting the foot pad assembly and the lower leg body, such that the foot pad assembly is mounted on the lower leg body in a way that allows it to float up and down.

[0006] According to one embodiment of the present invention, the elastic support assembly includes an assembly block, a connecting rod, a retaining member, and a spring. The assembly block has a floating hole. The top of the connecting rod passes through the floating hole of the assembly block and is then fitted with the retaining member. The bottom of the connecting rod is mounted on the foot pad assembly. The middle portion of the connecting rod has an abutment ring. The spring is fitted onto the connecting rod, with its bottom abutting against the abutment ring of the connecting rod and its top abutting against the assembly block. The assembly block is fixedly mounted in the middle of the lower leg cavity of the lower leg body, so that the foot pad assembly and the lower leg body are connected by the elastic support assembly.

[0007] According to one embodiment of the present invention, the middle portion of the upper leg has a first inwardly convex portion and a first outwardly concave portion extending along the height direction. The positions of the first inwardly convex portion and the first outwardly concave portion correspond in the thickness direction of the upper leg. The first inwardly convex portion divides the upper leg cavity of the upper leg into an upper left cavity and an upper right cavity. The middle portion of the lower leg has a second inwardly convex portion and a second outwardly concave portion extending along the height direction. The positions of the second inwardly convex portion and the second outwardly concave portion correspond in the thickness direction of the lower leg. The second inwardly convex portion divides the lower leg cavity of the lower leg into a lower left cavity and a lower right cavity. The first inwardly convex portion of the upper leg protrudes into the second outwardly concave portion of the lower leg. The lower leg body has its left side located in the upper left cavity of the upper leg body, and its right side located in the upper right cavity of the upper leg body. The foot pad assembly includes a foot pad body and two bottom legs extending upward from the foot pad body. The top of one bottom leg extends into the lower left cavity of the lower leg body, and the top of the other bottom leg extends into the lower right cavity of the lower leg body. There are two elastic support assemblies. The bottom of the connecting rod of one elastic support assembly is installed on one bottom leg, and the assembly block is installed in the lower left cavity of the lower leg body. The bottom of the connecting rod of the other elastic support assembly is installed on the other leg body, and the assembly block is installed in the lower right cavity of the lower leg body.

[0008] According to one embodiment of the present invention, the lower leg body has at least two pairs of abutment platforms. At least one pair of abutment platforms protrudes into the lower left cavity at the middle of the left side of the lower leg body, and at least one pair of abutment platforms protrudes into the lower right cavity at the middle of the right side of the lower leg body. The top of the assembly block located in the lower left cavity of the lower leg body abuts against the abutment platform protruding into the lower left cavity, and the top of the assembly block located in the lower right cavity of the lower leg body abuts against the abutment platform protruding into the lower right cavity.

[0009] According to one embodiment of the present invention, the lower leg body is a metal or alloy part, and the abutment of the lower leg body is formed by stamping the middle part of the lower leg body through a stamping process.

[0010] According to one embodiment of the present invention, one end of the assembly block has an ear portion, the ear portion of the assembly block protrudes behind the second inner protrusion of the lower leg body, and the ear portion of the assembly block and the second inner protrusion of the lower leg body have an overlapping portion in the thickness direction of the lower leg body.

[0011] According to one embodiment of the present invention, the size and shape of the assembly block are consistent with the size and shape of the lower left cavity or the lower right cavity of the lower leg body, so that one assembly block is respectively inserted into the lower left cavity and the lower right cavity of the lower leg body.

[0012] According to one embodiment of the present invention, the upper leg body has a first locking hole, which is located at the bottom of the upper leg body at the position of the first inner protrusion and the first outer concave portion. The lower leg body has a row of second locking holes, which are distributed at intervals along the height direction of the lower leg body at the position of the second inner protrusion and the second outer concave portion. As the lower leg body moves relative to the upper leg body, the first locking hole of the upper leg body can be aligned with one of the row of second locking holes of the lower leg body. The supporting leg includes a locking unit, which includes a mounting component and a locking component. The mounting component is fitted onto the bottom of the upper leg body. The mounting component has... The locking assembly includes a button, a mounting shaft, and a compression spring. The button has a pressing end, a locking end opposite to the pressing end, a locking protrusion protruding from the locking end, and a button hole penetrating both sides of the button. The middle portion of the mounting shaft is mounted in the button hole of the button. The opposite ends of the mounting shaft protrude into the pair of shaft holes of the mounting assembly. The pressing end of the button protrudes from the surface of the mounting assembly through the button hole of the mounting assembly. The locking protrusion of the button can enter the second latch hole of the lower leg. One end of the compression spring abuts against the mounting assembly, and the other end abuts against the locking end of the button.

[0013] According to one embodiment of the present invention, the foot pad assembly includes a cushioning pad disposed at the bottom of the foot pad body.

[0014] According to another aspect of the present invention, the present invention further provides a child safety seat, which includes a seat body and a support leg, wherein the support leg includes: An upper leg body, wherein the upper leg body has an upper leg cavity; A lower leg body, wherein the lower leg body has a lower leg cavity, and the top of the lower leg body is adjustablely mounted to the upper leg cavity of the upper leg body; and A footrest unit, wherein the footrest unit includes a footrest assembly and at least one elastic support assembly, the top of the footrest assembly extending into the lower leg cavity of the lower leg body, the elastic support assembly connecting the footrest assembly and the lower leg body, such that the footrest assembly is mounted on the lower leg body in a way that allows it to float up and down, wherein the top of the upper leg body of the support leg is disposed on the seat body. Attached Figure Description

[0015] Figure 1This is a three-dimensional schematic diagram of a child safety seat in a preferred embodiment of the present invention.

[0016] Figure 2 This is a perspective view of another state of the child safety seat according to the above-described preferred embodiment of the present invention.

[0017] Figure 3 This is an exploded view of the child safety seat according to the above-described preferred embodiment of the present invention.

[0018] Figure 4 This is a perspective view of a support leg of the child safety seat according to the above-described preferred embodiment of the present invention.

[0019] Figure 5 This is a perspective view of the support leg of the child safety seat according to the above-described preferred embodiment of the present invention.

[0020] Figure 6 This is a cross-sectional schematic diagram of one position of the child safety seat according to the above-described preferred embodiment of the present invention.

[0021] Figure 7 This is a cross-sectional view of another position of the child safety seat according to the above-described preferred embodiment of the present invention.

[0022] Figure 8 This is an exploded view of the child safety seat according to the above-described preferred embodiment of the present invention.

[0023] Figure 9 This is an exploded view of the child safety seat according to the above-described preferred embodiment of the present invention. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0025] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more,” unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of this application, “at least one” and “one or more” refer to one, two, or more than two. The term “and / or” is used to describe the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can indicate: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character “ / ” generally indicates that the preceding and following related objects are in an “or” relationship.

[0026] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0027] Refer to the accompanying drawings of the specification of this utility model. Figures 1 to 9 A preferred embodiment of the present invention will be disclosed and described in the following description, wherein the child safety seat includes a seat body 10 and a support leg 20, the top of the support leg 20 being mounted on the seat body 10, the seat body 10 being placed on the rear seat of the vehicle and fixed to the rear of the vehicle body, and the bottom of the support leg 20 abutting against the footwell of the vehicle, so that when the vehicle brakes, the support leg 20 is used to prevent the seat body 10 from tilting forward.

[0028] In this invention, the support leg 20 includes an upper leg body 21, a lower leg body 22, and a foot pad unit 23. The upper leg body 21 has an upper leg cavity 211, and the lower leg body 22 has a lower leg cavity 221. The top of the lower leg body 22 is adjustablely mounted in the upper leg cavity 211 of the upper leg body 21. The foot pad unit 23 includes a foot pad assembly 231 and at least one elastic support assembly 232. The top of the foot pad assembly 231 extends into the lower leg cavity 221 of the lower leg body 22. The elastic support assembly 232 connects the foot pad assembly 231 and the lower leg body 22, allowing the foot pad assembly 231 to be mounted vertically on the lower leg body 22. The top of the upper leg body 21 is mounted on the seat body 10 to mount the top of the support leg 20 to the seat body 10. After the seat body 10 is placed on the rear seat of the vehicle and fixed to the vehicle body, the overall length of the support leg 20 can be adjusted by pulling down the lower leg body 22, so that the foot pad unit 23 of the support leg 20 is close to the foot area of ​​the vehicle. In this utility model, since the elastic support component 232 connects the foot pad component 231 and the lower leg body 22, the foot pad component 231 is installed on the lower leg body 22 in a way that allows it to float up and down. Therefore, when the vehicle is driving on a bumpy road, on the one hand, the elastic support component 232 can compensate for the relative movement between the upper leg body 21 and the lower leg body 22, reducing the amplitude of the up and down movement of the upper leg body 21 and the lower leg body 22, which helps to reduce abnormal noise and protect the reliability of the support leg 20. On the other hand, the elastic support component 232 allows the foot pad component 231 to always be close to the foot area of ​​the vehicle, so as to avoid the support leg 20 colliding with the foot area of ​​the vehicle, thereby helping to reduce abnormal noise.

[0029] To facilitate the installation of the top of the upper leg 21 onto the seat body 10, in this invention, the seat body 10 has a downward-facing insertion hole 11. The shape and size of the insertion hole 11 match the shape and size of the top of the upper leg 21. The top of the upper leg 21 is inserted into the insertion hole 11 of the seat body 10 to install the top of the upper leg 21 into the insertion hole 11 of the seat body 10 and to prevent the support leg 20 from wobbling relative to the seat body 10. Preferably, after the top of the upper leg 21 is inserted into the insertion hole 11 of the seat body 10, a set of screws can be used to lock the seat body 10 and the upper leg 21 to prevent the upper leg 21 from falling off the seat body 10.

[0030] In this invention, the upper leg body 21 and the lower leg body 22 of the support leg 20 can be alloy parts, such as, but not limited to, aluminum alloy, so that the upper leg body 21 and the lower leg body 22 have sufficient strength and are lightweight. Optionally, the upper leg body 21 and the lower leg body 22 of the support leg 20 can be metal parts.

[0031] Furthermore, the elastic support assembly 232 includes an assembly block 2321, a connecting rod 2322, a retaining member 2323, and a spring 2324. The assembly block 2321 has a floating hole 23211. The bottom of the connecting rod 2322 is mounted to the foot pad assembly 231. The middle portion of the connecting rod 2322 has an abutment ring 23221. The top of the connecting rod 2322 passes through the floating hole 23211 of the assembly block 2321 and is then mounted to the retaining member 2323. The spring 2324 is fitted onto the connecting rod 2322. The bottom of the spring 2324 abuts against the abutment ring 23221 of the connecting rod 2322, and the top of the spring 2324 abuts against the assembly block 2321. The assembly block 2321 is fixedly installed in the middle of the lower leg cavity 221 of the lower leg body 22. That is, the assembly block 2321 and the lower leg body 22 are combined into a whole. Thus, the elastic support assembly 232 connects the foot pad assembly 231 and the lower leg body 22. When the vehicle is traveling on a bumpy road, as the lower leg body 22 moves downward relative to the foot pad assembly 231, the mounting block 2321 moves downward relative to the foot pad assembly 231 along the extension direction of the connecting rod 2322, compressing the spring 2324 towards the abutment ring 23221 of the connecting rod 2322. This causes the spring 2324 to be compressed and deformed, accumulating elastic potential energy. Correspondingly, when the spring 2324 returns to its initial state and relaxes, the spring 2324 pushes the mounting block 2321 upward, causing the mounting block 2321 to move upward relative to the foot pad assembly 231 along the extension direction of the connecting rod 2322. This, in turn, causes the lower leg body 22 to move upward relative to the foot pad assembly 231, thereby causing the foot pad assembly 231 to float up and down relative to the lower leg body 22, reducing abnormal noise.

[0032] In this invention, the retaining member 2323 may be one or more retaining springs. The top of the connecting rod 2322 has a retaining groove 23222. After the top of the connecting rod 2322 passes through the floating hole 23211 of the assembly block 2321, the inner side of the retaining member 2323 is engaged in the retaining groove 23222 of the connecting rod 2322. The retaining member 2323 can prevent the connecting rod 2322 from falling out of the floating hole 23211 of the assembly block 2321 and is used to limit the maximum downward movement of the foot pad assembly 231, preventing the top of the foot pad assembly 231 from detaching from the lower leg cavity 221 of the lower leg body 22. Optionally, the retaining member 2323 may be screwed onto the top of the connecting rod 2322.

[0033] In this invention, there are two elastic support components 232. The elastic support components 232 can provide stronger support when the foot pad component 231 is installed on the lower leg body 22 in a way that allows it to float up and down.

[0034] Specifically, the upper leg body 21 has a first inner protrusion 212 and a first outer concave portion 213 extending along the height direction in its middle portion. The positions of the first inner protrusion 212 and the first outer concave portion 213 correspond to each other. The first inner protrusion 212 divides the upper leg cavity 211 of the upper leg body 21 into an upper left cavity 2111 and an upper right cavity 2112. In this utility model, a flat aluminum alloy profile can be formed into the upper leg body 21 by a cold stamping process. The first inner protrusion 212 and the first outer concave portion 213 are formed at the cold stamping position of the aluminum alloy profile. The perforation of the aluminum alloy profile is divided by the first inner protrusion 212 to form the upper left cavity 2111 and the upper right cavity 2112. It is understood that the first inner protrusion 212 described in this utility model, which divides the upper leg cavity 211 of the upper leg body 21 into the upper left cavity 2111 and the upper right cavity 2112, means that the dimensions of the upper left cavity 2111 and the upper right cavity 2112 in the thickness direction of the upper leg body 21 are greater than the dimensions of the upper leg cavity 211 corresponding to the position of the first inner protrusion 212 in the thickness direction of the upper leg body 21. It does not mean that the upper left cavity 2111 and the upper right cavity 2112 are not connected inside the upper leg body 21.

[0035] Accordingly, the lower leg body 22 has a second inner protrusion 222 and a second outer concave portion 223 extending along the height direction in its middle portion. The positions of the second inner protrusion 222 and the second outer concave portion 223 correspond to each other. The second inner protrusion 222 divides the lower leg cavity 221 of the lower leg body 22 into a lower left cavity 2211 and a lower right cavity 2212. In this utility model, a flat aluminum alloy profile can be formed into the lower leg body 22 by a cold stamping process. The stamped position of the aluminum alloy profile forms the second inner protrusion 222 and the second outer concave portion 223. The perforation of the aluminum alloy profile is divided by the second inner protrusion 222 to form the lower left cavity 2211 and the lower right cavity 2212. It is understood that the second inner protrusion 222 described in this utility model, which divides the lower leg cavity 221 of the lower leg body 22 into the lower left cavity 2211 and the lower right cavity 2212, means that the dimensions of the lower left cavity 2211 and the lower right cavity 2212 in the thickness direction of the lower leg body 22 are greater than the dimensions of the lower leg cavity 221 corresponding to the position of the second inner protrusion 222 in the thickness direction of the lower leg body 22. It does not mean that the lower left cavity 2211 and the lower right cavity 2212 are not connected inside the lower leg body 22.

[0036] The top of the lower leg body 22 is mounted on the upper leg cavity 211 of the upper leg body 21. The first inner protrusion 212 of the upper leg body 21 protrudes into the second outer concave portion 223 of the lower leg body 22. The left side of the lower leg body 22 is located in the upper left cavity 2111 of the upper leg body 21, and the right side of the lower leg body 22 is located in the upper right cavity 2112 of the upper leg body 21. In this way, not only is it beneficial to prevent the upper leg body 21 and the lower leg body 22 from sliding left and right, but it is also beneficial to prevent the upper leg body 21 and the lower leg body 22 from rotating relative to each other in the circumferential direction. It can be understood that the shape and size of the lower leg body 22 are consistent with the shape and size of the upper leg cavity 211 of the upper leg body 21.

[0037] The foot pad assembly 231 includes a foot pad body 2311 and two bottom legs 2312. The two bottom legs 2312 extend upward from the foot pad body 2311, with the top of one bottom leg 2312 extending into the lower left cavity 2211 of the lower leg body 22, and the top of the other bottom leg 2312 extending into the lower right cavity 2212 of the lower leg body 22. Therefore, it can be understood that the second inner protrusion 222 of the lower leg body 22 protrudes into the space between the two bottom legs 2312 of the foot pad assembly 231.

[0038] In this invention, the bottom of the connecting rod 2322 of one elastic support component 232 is installed on one bottom leg 2312 and the assembly block 2321 of this elastic support component 232 is installed in the lower left cavity 2211 of the lower leg body 22. The bottom of the connecting rod 2322 of the other elastic support component 232 is installed on another bottom leg 2312 and the assembly block 2321 of this elastic support component 232 is installed in the lower right cavity 2212 of the lower leg body 22. In this way, the two elastic support components 232 can allow the foot pad component 231 to be installed vertically and flexibly on the lower leg body 22.

[0039] Preferably, the bottom leg 2312 of the foot pad assembly 231 has a mounting hole 23121, and the bottom of the connecting rod 2322 is mounted in the mounting hole 23121 of the bottom leg 2312 to mount the bottom of the connecting rod 2322 to the foot pad assembly 231.

[0040] Preferably, the foot pad assembly 231 includes a cover 2313 having a cover perforation 23131. After the top of the base leg 2312 passes through the cover perforation 23131 of the cover 2313, the cover 2313 is installed on the foot pad body 2311. The foot pad body 2311 and the cover 2313 cooperate with each other to hide the connection between the foot pad body 2311 and the base leg 2312, thereby enhancing the overall aesthetics of the child safety seat.

[0041] Preferably, the foot pad assembly 231 further includes a cushioning pad 2314, which is disposed at the bottom of the foot pad body 2311 for direct contact with the foot pedal area of ​​the vehicle. In this invention, after the cushioning pad 2314 is stacked at the bottom of the foot pad body 2311, a set of screws can be used to lock the cushioning pad 2314 and the foot pad body 2311 together.

[0042] In this invention, the size and shape of the assembly block 2321 are consistent with the size and shape of the lower left cavity 2211 or the lower right cavity 2212 of the lower leg body 22, so that one assembly block 2321 is respectively inserted into the lower left cavity 2211 and the lower right cavity 2212 of the lower leg body 22. In this way, the assembly block 2321 is fixedly installed in the middle of the lower leg cavity 221 of the lower leg body 22, that is, the assembly block 2321 and the lower leg body 22 are combined into a whole.

[0043] Preferably, one end of the mounting block 2321 has an ear 23212, which protrudes behind the second inner protrusion 222 of the lower leg body 22. The ear 23212 of the mounting block 2321 and the second inner protrusion 222 of the lower leg body 22 overlap in the thickness direction of the lower leg body 22. In this way, the child safety seat can prevent the mounting block 2321 from moving relative to the upper leg body 21, thereby ensuring the reliability of the child safety seat. More preferably, a screw can be used to lock the mounting block 2321 to the lower leg body 22.

[0044] Reference Appendix Figure 6 The lower leg body 22 has at least two pairs of abutment platforms 224. At least one pair of abutment platforms 224 protrudes into the lower left cavity 2211 at the middle of the left side of the lower leg body 22. The top of the mounting block 2321 located in the lower left cavity 2211 of the lower leg body 22 abuts against the abutment platform 224 protruding into the lower left cavity 2211. At least one pair of abutment platforms 224 protrudes into the lower right cavity 2212 at the middle of the right side of the lower leg body 22. The top of the mounting block 2321 located in the lower right cavity 2212 of the lower leg body 22 abuts against the abutment platform 224 protruding into the lower right cavity 2212. In this way, the thrust provided by the spring 2324 of the elastic support assembly 232 can prevent the mounting block 2321 from moving in the height direction relative to the lower leg body 22, thereby ensuring the stability of the support leg 20 and the reliability of the child safety seat. Preferably, the abutment 224 of the lower leg body 22 is formed by stamping the middle part of the lower leg body 22 through a stamping process.

[0045] In the appendix Figures 1 to 9 In this specific example of the child safety seat of the present invention shown, two pairs of abutments 224 protrude into the lower left cavity 2211 at the middle of the left side of the lower leg body 22, and two pairs of abutments 224 protrude into the lower right cavity 2212 at the middle of the right side of the lower leg body 22, to ensure that the mounting block 2321 does not move relative to the lower leg body 22 in the height direction.

[0046] In this invention, the support leg 20 further includes a locking unit 24, which is used to lock the upper leg body 21 and the lower leg body 22. Specifically, the upper leg body 21 has a first locking hole 214, which is located at the bottom of the upper leg body 21 at the position of the first inner protrusion 212 and the first outer concave portion 213. The lower leg body 22 has a row of second locking holes 225, which are distributed at intervals along the height direction of the lower leg body 22 at the positions of the second inner protrusion 222 and the second outer concave portion 223. As the lower leg body 22 moves relative to the upper leg body 21, the first locking hole 214 of the upper leg body 21 can be selectively aligned with one of the row of second locking holes 225 of the lower leg body 22. The locking unit 24 includes a mounting assembly 241 and a locking assembly 242. The mounting assembly 241 is fitted onto the bottom of the upper leg body 21. The mounting assembly 241 has a button hole 2411 and a pair of shaft holes 2412 located on opposite sides of the button hole 2411. The locking assembly 242 includes a button 2421, a mounting shaft 2422, and a compression spring 2423. The button 2421 has a pressing end 24211, a locking end 24212 opposite to the pressing end 24211, a locking protrusion 24213 protruding from the locking end 24212, and a button hole 2421 penetrating through opposite sides of the button 2421. 4. The middle part of the mounting shaft 2422 is installed in the button hole 24214 of the button 2421. The opposite ends of the mounting shaft 2422 protrude into a pair of shaft holes 2412 of the mounting assembly 241. The pressing end 24211 of the button 2421 protrudes from the surface of the mounting assembly 241 through the button hole 2411 of the mounting assembly 241. The locking protrusion 24213 of the button 2421 can enter and exit the second latch hole 225 of the lower leg body 22. One end of the compression spring 2423 abuts against the mounting assembly 241, and the other end abuts against the locking end 24212 of the button 2421.

[0047] When the pressing end 24211 of the button 2421 is pressed, on the one hand, the locking protrusion 24213 of the button 2421 disengages from the second latch 225 of the lower leg 22; on the other hand, the button 2421 compresses the compression spring 2423 toward the mounting assembly 241, causing the compression spring 2423 to be compressed and deformed to accumulate elastic potential energy. At this time, the lower leg 22 can be pulled out to adjust the relative position of the lower leg 22 and the upper leg 21 and change the overall length of the support leg 20. After adjustment, release the button 2421. As the spring 2423 extends and returns to its initial state, it pushes the locking end 24212 of the button 2421 towards the upper leg 21, so that the locking protrusion 24213 of the button 2421 enters the second locking hole 225 of the lower leg 22. At this time, since the different positions of the locking protrusion 24213 are simultaneously held in the first locking hole 214 of the upper leg 21 and the second locking hole 225 of the lower leg 22, the locking unit 24 can lock the upper leg 21 and the lower leg 22 to prevent the relative positions of the upper leg 21 and the lower leg 22 from changing.

[0048] Furthermore, the mounting assembly 241 includes a first housing 2413 and a second housing 2414. The button hole 2411 and the shaft hole 2412 of the mounting assembly 241 are provided in the first housing 2413. That is, the mounting shaft 2422 is used to pressably mount the button 2421 in the first housing 2413. After the first housing 2413 and the second housing 2414 are respectively placed on opposite sides of the bottom of the upper leg body 21, the screw can be used to lock the first housing 2413 and the second housing 2414 to fit the mounting assembly 241 onto the bottom of the upper leg body 21.

[0049] Reference Appendix Figure 7 The button 2421 has a first insertion post 24215 at the locking end 24212, and the first housing 2413 has a second insertion post 24132. The first insertion post 24215 of the button 2421 and the second insertion post 24132 of the first housing 2413 are respectively inserted into the compression spring 2423 at opposite ends, so that one end of the compression spring 2423 reliably abuts against the mounting assembly 241, and the other end reliably abuts against the locking end 24212 of the button 2421.

[0050] Preferably, the first housing 2413 has a boss 24132, the width of which is the same as the width of the first external recess 213 of the upper leg body 21, and the boss 24132 of the first housing 2413 protrudes into the first external recess 213 of the upper leg body 21.

[0051] Further, see attached document. Figures 7 to 9 The supporting leg 20 further includes a retaining ring 25, which is fitted onto the lower leg body 22 and inserted into the upper leg cavity 211 of the upper leg body 21 at the bottom of the upper leg body 21. The retaining ring 25 not only isolates the upper leg body 21 and the lower leg body 22, preventing direct friction between the lower leg body 22 and the upper leg body 21 when the lower leg body 22 is pushed or pulled, but also prevents relative swaying between the upper leg body 21 and the lower leg body 22. Preferably, the retaining ring 25 is made of plastic or silicone, and its shape and size are consistent with the shape and size of the upper leg cavity 211 of the upper leg body 21, so as to reliably install the retaining ring 25 onto the upper leg body 21.

[0052] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A support leg for a child safety seat, characterized in that, include: An upper leg body, wherein the upper leg body has an upper leg cavity; A lower leg body, wherein the lower leg body has a lower leg cavity, and the top of the lower leg body is adjustablely mounted to the upper leg cavity of the upper leg body; and A foot pad unit, wherein the foot pad unit includes a foot pad assembly and at least one elastic support assembly, the top of the foot pad assembly extending into the lower leg cavity of the lower leg body, and the elastic support assembly connecting the foot pad assembly and the lower leg body, such that the foot pad assembly is mounted on the lower leg body in a way that allows it to float up and down.

2. The support leg according to claim 1, wherein the elastic support assembly includes an assembly block, a connecting rod, a retaining member, and a spring, the assembly block having a floating hole, the top of the connecting rod being fitted with the retaining member after passing through the floating hole of the assembly block, the bottom of the connecting rod being fitted with the foot pad assembly, the connecting rod having a retaining ring at its middle portion, the spring being fitted onto the connecting rod, and the bottom of the spring abutting against the retaining ring of the connecting rod, the top of the spring abutting against the assembly block, wherein the assembly block is fixedly installed in the middle of the lower leg cavity of the lower leg body to connect the foot pad assembly and the lower leg body by the elastic support assembly.

3. The support leg according to claim 2, wherein the middle portion of the upper leg body has a first inward protrusion and a first outward concave portion extending along the height direction, the positions of the first inward protrusion and the first outward concave portion corresponding in the thickness direction of the upper leg body, the first inward protrusion dividing the upper leg cavity of the upper leg body into an upper left cavity and an upper right cavity, the middle portion of the lower leg body has a second inward protrusion and a second outward concave portion extending along the height direction, the positions of the second inward protrusion and the second outward concave portion corresponding in the thickness direction of the lower leg body, the second inward protrusion dividing the lower leg cavity of the lower leg body into a lower left cavity and a lower right cavity, the first inward protrusion of the upper leg body protruding into the second outward concave portion of the lower leg body. The lower leg has a concave portion, with its left side located in the upper left cavity of the upper leg and its right side located in the upper right cavity of the upper leg. The foot pad assembly includes a foot pad body and two bottom legs extending upward from the foot pad body. The top of one bottom leg extends into the lower left cavity of the lower leg, and the top of the other bottom leg extends into the lower right cavity of the lower leg. There are two elastic support assemblies. The bottom of the connecting rod of one elastic support assembly is installed on one bottom leg, and the assembly block is installed in the lower left cavity of the lower leg. The bottom of the connecting rod of the other elastic support assembly is installed on the other leg, and the assembly block is installed in the lower right cavity of the lower leg.

4. The support leg according to claim 3, wherein the lower leg body has at least two pairs of abutment platforms, at least one pair of abutment platforms protruding into the lower left cavity at the middle of the left side of the lower leg body, at least one pair of abutment platforms protruding into the lower right cavity at the middle of the right side of the lower leg body, the top of the assembly block located in the lower left cavity of the lower leg body abutting against the abutment platform protruding into the lower left cavity, and the top of the assembly block located in the lower right cavity of the lower leg body abutting against the abutment platform protruding into the lower right cavity.

5. The support leg according to claim 4, wherein the lower leg body is a metal or alloy part, and the abutment of the lower leg body is formed by stamping the middle part of the lower leg body through a stamping process.

6. The support leg according to claim 3, wherein one end of the assembly block has an ear portion, the ear portion of the assembly block protruding behind the second inner protrusion of the lower leg body, and the ear portion of the assembly block and the second inner protrusion of the lower leg body have an overlapping portion in the thickness direction of the lower leg body.

7. The support leg according to claim 3, wherein the size and shape of the assembly block are consistent with the size and shape of the lower left cavity or the lower right cavity of the lower leg body, so that one of the assembly blocks can be engaged in the lower left cavity and the lower right cavity of the lower leg body respectively.

8. The support leg according to claim 3, wherein the upper leg body has a first locking hole, the first locking hole being disposed at the bottom of the upper leg body at the location of the first inner protrusion and the first outer concave portion of the upper leg body, the lower leg body having a row of second locking holes, the row of second locking holes being distributed at intervals along the height direction of the lower leg body at the location of the second inner protrusion and the second outer concave portion of the lower leg body, and as the lower leg body moves relative to the upper leg body, the first locking hole of the upper leg body can be aligned with one of the row of second locking holes of the lower leg body, wherein the support leg includes a locking unit, the locking unit including a mounting component and a locking component, the mounting component being fitted onto the bottom of the upper leg body, the mounting component having The locking assembly includes a button hole and a pair of shaft holes located on opposite sides of the button hole. The locking assembly includes a button, a mounting shaft, and a compression spring. The button has a pressing end, a locking end opposite to the pressing end, a locking protrusion protruding from the locking end, and a button hole penetrating on opposite sides of the button. The middle portion of the mounting shaft is mounted in the button hole of the button. The opposite ends of the mounting shaft protrude into the pair of shaft holes of the mounting assembly. The pressing end of the button protrudes from the surface of the mounting assembly through the button hole of the mounting assembly. The locking protrusion of the button can enter and exit the second latch hole of the lower leg. One end of the compression spring abuts against the mounting assembly, and the other end abuts against the locking end of the button.

9. The support leg of claim 3, wherein the foot pad assembly includes a cushioning pad disposed at the bottom of the foot pad body.

10. A child safety seat, characterized in that, include: Seat body; and The support leg according to any one of claims 1 to 9, wherein the top of the upper leg of the support leg is disposed on the seat body.

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