A footrest adjustment mechanism for a child seat

Abstract

The present invention discloses a footrest adjustment mechanism for a children's seat, which includes a seating part and a footrest pivotally connected, a gear rotatably arranged between the footrest and the seating part, and a locking device movably connected to the seating part. When the footrest rotates upward, it can drive the gear to rotate upward; when the footrest is in the first angular position, the locking device cooperates with the footrest so that the footrest cannot rotate downward relative to the seating part; when the footrest is rotated upward from the first angular position, the upwardly rotating gear can drive the locking device to move and disengage from the cooperation with the footrest, so that the footrest can be rotated downward to the second angular position. That is, when the footrest is in the first angular position, simply rotating the footrest upward can unlock the locking of the footrest by the locking device through the gear, and the footrest can be rotated downward to the second angular position, so that the angle adjustment operation of the footrest is very simple.

Description

Technical Field

[0001] This application relates to the field of infant products, and particularly to a footrest adjusting mechanism for a child seat. Background Art

[0002] A child seat generally includes a seating part, a backrest pivotally connected to the rear side of the seating part at the lower side, and a footrest pivotally connected to the seating part at the upper side. To make the use of the seat more convenient, the footrest is generally arranged to be rotatable and switchable between different angular positions relative to the seating part. For example, the footrest can be rotated upward relative to the seating part to an angular position substantially parallel to the seating part, or can be rotated downward relative to the seating part to a suitable inclined angular position so that the calves that naturally hang down when a child sits on the seating part can rest on it.

[0003] The conventional angle adjustment device for the footrest of a child seat generally includes two tooth grooves respectively arranged on the opposite sides of the footrest and the seating part, a gear movably located axially between the two tooth grooves, a spring arranged between the gear and the bottom wall of the tooth groove of the footrest, and a button that can move left and right relative to the seating part. One side of the button extends into the tooth groove to abut against the gear, and the other side is located outside the seating part for convenient pressing. Under the action of the spring, the gear meshes with the tooth grooves of both the footrest and the seating part at the same time, so that the footrest and the seating part cannot rotate relative to each other, and the footrest is locked at the angle relative to the seating part. When adjusting the angle of the footrest relative to the seating part, press the button to push the gear into the tooth groove of the footrest and disengage from the tooth groove of the seating part, and then rotate the footrest up / down at the same time. When the footrest rotates to a suitable angle, release the button. Under the action of the spring, the gear moves towards the tooth groove of the seating part and meshes with the tooth grooves of the footrest and the seating part again at the same time, so that the footrest and the seating part cannot rotate relative to each other, and the footrest is locked at another angular position relative to the seating part, thus realizing the adjustment of the angle of the footrest relative to the seating part.

[0004] The above setting of the conventional footrest angle adjustment device makes the angle adjustment operation of the footrest relatively cumbersome. Summary of the Invention

[0005] The object of the present invention is to provide a footrest adjusting mechanism for a child seat, and the angle adjustment operation of its footrest is very simple.

[0006] The technical solution of the present invention is: a footrest adjustment mechanism of a child seat, comprising a sitting part, a footrest pivotally connected to the sitting part on the upper side, the footrest being convertible between a first angle position and a second angle position relative to the sitting part, the footrest adjustment mechanism also comprising a gear rotatably arranged between the upper side of the footrest and the sitting part, and a locking device movably connected to the sitting part, wherein the gear can drive the gear to rotate upward when the footrest is rotated upward; and the gear and the locking device are arranged such that, when the footrest is in the first angle position, the locking device cooperates with the footrest so that the footrest cannot rotate downward relative to the sitting part; when the footrest is rotated upward from the first angle position, the gear rotating upward can drive the locking device to move and disengage from the cooperation with the footrest, so that the footrest can be rotated downward to the second angle position again.

[0007] Preferably, when the pedal is rotated upward to the third angular position, the locking device completely disengages from the pedal and the pedal can be rotated downward to the second angular position; more preferably, the pedal at the second angular position can be rotated upward to the third angular position and then rotated downward, and when rotated downward to the first angular position, the locking device again cooperates with the gear and the pedal so that the pedal cannot rotate downward.

[0008] Wherein, during the downward rotation of the pedal, the gear does not rotate downward with the pedal, and the gear and the locking device always maintain a state of being at the third angular position relative to the seating portion.

[0009] Preferably, a toggle device is movably connected to the upper side of the pedal, and the toggle device is arranged in cooperation with the gear. During the upward rotation of the pedal, the toggle device rotates together with the pedal and drives the gear to rotate upward; during the downward rotation of the pedal, the toggle device rotates downward together with the pedal and moves relative to the pedal and the gear; preferably, the toggle device includes a toggle member connected to the pedal in a relatively axially movable manner, and a second elastic member arranged between the toggle member and the pedal; when the pedal rotates upward, the toggle member drives the gear to rotate upward.

[0010] Preferably, a plurality of groups of toggle grooves are circumferentially arranged on one side of the gear facing the seating portion, and each group of toggle grooves includes a first toggle groove and a second toggle groove circumferentially arranged in sequence for the toggle member to extend into, and each of the first toggle groove and the second toggle groove has one side that can cooperate with the toggle member stopper, and the other side that can cooperate with the toggle member inclined surface; when one side of the toggle member extends into the first toggle groove or the second toggle groove and abuts against its stopper, the pedal rotates upward and the gear can be driven to rotate together through the toggle member; when the pedal rotates downward, the first toggle groove or the second toggle groove drives the toggle member to move in the direction toward the pedal through the inclined surface cooperation, and the gear does not rotate with the pedal at this time; when the pedal is at a first angular position and cannot rotate downward, one side of the toggle member extends into the second toggle groove and abuts against the second toggle groove stopper; when the pedal is at the second angular position, one side of the toggle member extends into the first toggle groove and abuts against the first toggle groove stopper.

[0011] In the same group of toggle grooves, the angle between the stop surface of the first toggle groove and the stop surface of the second toggle groove is equal to the angle of the pedal rotating downward from the third angle position to the first angle position; in two adjacent groups of toggle grooves, the angle between the stop surface of the second toggle groove of one group of toggle grooves and the stop surface of the first toggle groove of the other adjacent group of toggle grooves is equal to the angle of the pedal rotating downward from the third angle position to the second angle position.

[0012] Preferably, the locking device includes a locking member having one side connected to the seating portion and axially movable relative to the seating portion, and a first elastic member arranged between the locking member and the seating portion; more preferably, the seating portion is provided with a first mounting groove on the side facing the footrest, one side of the locking member is axially movably placed in the first mounting groove, and the first elastic member is arranged between the locking member and the bottom wall of the first mounting groove.

[0013] Preferably, a plurality of groups of locking grooves are sequentially arranged in the circumferential direction on one side of the gear facing the seating portion, and each group of locking grooves includes a first locking groove and a second locking groove sequentially arranged in the circumferential direction, and one side of each of the first locking groove and the second locking groove can be matched with the locking member stopper, and the other side can be matched with the inclined surface of the locking member; when one side of the locking member extends into the first locking groove or the second locking groove and abuts against the stopper, the gear cannot rotate with the pedal rotating downward; when the pedal rotates upward, the inclined surface of the first locking groove or the second locking groove drives the locking member to move toward the seating portion;

[0014] When the footrest is in the first angular position, one side of the locking member extends into the first locking groove and abuts against its stop, and the locking member also extends into the footrest and cooperates with the footrest, so that the footrest cannot rotate downward; when the footrest rotates upward from the first angular position to the third angular position, the locking member is completely disengaged from the footrest and the first locking groove and is opposite to the second locking groove of the same set of locking grooves. Under the action of the first elastic member, one side of the locking member extends into the second locking groove and contacts its stop; when the footrest rotates upward from the second angular position to the third angular position, the locking member is completely disengaged from the second locking groove and is opposite to the first locking groove of the adjacent set of locking grooves.

[0015] Preferably, the locking member includes a main body and a locking portion. The locking portion is provided at one end of the main body facing the footrest side, and the thickness of the main body is greater than the thickness of the locking portion, and the thickness of the main body is also greater than the height of the first locking groove; preferably, the first locking groove is set such that its maximum groove depth is greater than the length of the locking portion, and the second locking groove is set such that its maximum groove depth is not greater than the length of the locking portion; preferably, when the footrest is in the first angular position, the locking portion extends into the first locking groove, and a part of the side of the main body facing the gear extends into the first locking groove and abuts against its stop surface, and the part of the main body on this side outside the first locking groove extends into the footrest and cooperates with the footrest, and the footrest cannot rotate downward; when the footrest rotates upward from the first angle to the third angular position, the locking portion extends into the second locking groove and abuts against its stop surface.

[0016] Preferably, a first limiting portion and a second limiting portion are respectively provided on the upper side of the footrest and the riding portion. When the footrest is in the second angular position, one side of the first limiting portion cooperates with the second limiting portion, and the footrest cannot rotate downward relative to the riding portion.

[0017] Preferably, the first limiting portion is an arc-shaped limiting groove provided on the footrest. Correspondingly, the second limiting portion is a limiting convex block provided on the riding portion, and the limiting convex block extends into the arc-shaped limiting groove; when the footrest is in the second angular position, one end of the arc-shaped limiting groove abuts against the limiting convex block, and the footrest cannot rotate downward relative to the riding portion; preferably, when the footrest rotates upward, one end of the arc-shaped limiting groove is away from the limiting convex block. When the footrest rotates to the third angular position, the other end of the arc-shaped limiting groove abuts against the limiting convex block, and the footrest cannot rotate upward relative to the riding portion.

[0018] When the footrest is in the first angular position, one side of the locking device extends into the arc-shaped limiting groove and abuts against one end of the arc-shaped limiting groove to realize the cooperation with the footrest.

[0019] Preferably, a receiving cavity is recessed in the middle of the upper side of the footrest facing the seating part, and the gear is rotatably located in the receiving cavity; preferably, the arc-shaped limiting groove is arranged on the footrest, and the arc-shaped limiting groove is arranged outside the receiving cavity and communicates with the receiving cavity.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. When the footrest of the present invention is in the first angular position, simply rotating the footrest upward can unlock the locking device of the footrest through the gear, and then the footrest can be rotated downward to the second angular position, so that the angle adjustment operation of the footrest is very simple.

[0022] 2. When the footrest of the present invention is in the second angular position, simply rotating the footrest upward to a certain angle and then rotating it downward can adjust the footrest to the first angular position, further making the angle adjustment operation of the footrest simpler.

[0023] 3. When the footrest is rotated upward to the third angular position, the limiting convex block abuts against the other end of the arc-shaped limiting groove, so that the footrest cannot be rotated upward anymore. That is to say, when it is necessary to switch the footrest between the first angular position and the second angular position, simply rotate the footrest upward until it cannot be rotated anymore and then rotate it downward, making the angle adjustment operation of the footrest of the children's seat and the baby stroller of the present invention more intuitive and thus more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. The following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed by the present invention.

[0026] Figure 1 It is a schematic diagram of the footrest of the present invention in the first angular position relative to the seating part;

[0027] Figure 2 It is a schematic diagram of the footrest of the present invention in the second angular position relative to the seating part;

[0028] Figure 3 is the enlarged exploded view of part A in Figure 1 ;

[0029] Figure 4 is the enlarged exploded view of part A from another angle in Figure 1 ;

[0030] Figure 5 is the enlarged view of the pedal part in the present invention;

[0031] Figure 6 is the enlarged view of the gear at a certain angle in the present invention;

[0032] Figure 7 is the enlarged view of the gear at another angle in the present invention;

[0033] Figure 8 is the enlarged plan view of the gear at yet another angle in the present invention;

[0034] Figure 9 is the enlarged view of the toggling part in the present invention;

[0035] Figure 10 is the enlarged view of the gear, toggling part, and locking part when the pedal of the present invention is at the first angular position;

[0036] Figure 11 is the enlarged view of the pedal and the gear, toggling part when the pedal of the present invention is at the second angular position;

[0037] Figure 12 is the view of the pedal of the present invention when it is at the third angular position relative to the seating part. Detailed Description of the Invention

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0040] It should be noted that like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0041] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0043] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0044] As Figures 1 to 12 shown, a footrest adjusting mechanism of a child seat includes a seating part 1 and a footrest 2 pivotally connected to the front side of the seating part 1. The footrest 2 can be switched between a first angular position and a second angular position relative to the seating part 1. The seat further includes a gear 3 rotatably arranged between the upper side of the footrest 2 and the seating part 2, and a locking device movably connected to the seating part 1. When the footrest 2 rotates upward, the gear 3 can be driven to rotate upward; and the gear 3 and the locking device are arranged such that when the footrest 2 is in the first angular position, the locking device cooperates with the footrest 2, so that the footrest 2 cannot rotate downward relative to the seating part 1; when the footrest 2 rotates upward from the first angular position, the gear 3 rotating upward together with the footrest 2 can drive the locking device to move and disengage from the cooperation with the footrest 2, so that the footrest 2 can then rotate downward to the second angular position.

[0045] In this embodiment, when the pedal 2 rotates upward to the third angular position, the locking device is completely disengaged from the cooperation with the pedal 2, and the pedal 2 can rotate downward to the second angular position.

[0046] Preferably, the pedal 2 located at the second angular position can also rotate upward to the third angular position and then rotate downward, and when rotating downward to the first angular position, the locking device cooperates with the gear 3 and the pedal 2 again so that the pedal 2 cannot rotate downward.

[0047] The upper side of the pedal 2, the gear 3 and the seating part 1 are pivotally connected by a pivot shaft (not shown in the figure) extending left and right.

[0048] A first limiting part and a second limiting part are respectively arranged on the upper side of the pedal 2 and the seating part 1. When the pedal 2 is located at the second angular position, one side of the first limiting part cooperates with the second limiting part, and the pedal 2 cannot rotate downward relative to the seating part 1.

[0049] In this embodiment, the first limiting part is an arc-shaped limiting groove 20 arranged on the pedal 2. Correspondingly, the second limiting part is a limiting convex block 11 arranged on the seating part 1, and the limiting convex block 11 extends into the arc-shaped limiting groove 20. When the pedal 2 is located at the second angular position, one end of the arc-shaped limiting groove 20 abuts against the limiting convex block 11, and the pedal 2 cannot rotate downward relative to the seating part 1. When the pedal 2 rotates relative to the seating part 1, the limiting convex block 11 moves relative to the arc-shaped limiting groove 20. When the pedal 2 rotates upward, one end 201 of the arc-shaped limiting groove 20 moves away from the limiting convex block 11. When the pedal 2 rotates to the third angular position, the other end 202 of the arc-shaped limiting groove 20 abuts against the limiting convex block 11, and the pedal 2 cannot rotate upward relative to the seating part 1. Thus, the arrangement of the limiting convex block 11 and the arc-shaped limiting groove 20 realizes the limitation of the up and down rotation angle range of the pedal 2.

[0050] A receiving cavity 21 is concavely provided in the middle of the side of the upper side of the pedal 2 facing the seating part 1. The gear 3 is rotatably located in the receiving cavity 21 of the pedal 2, and the gear 3 is arranged not to axially move relative to the pedal 2 and the seating part 1, that is, not to move left and right relative to the pedal 2 and the seating part 1. In this embodiment, the end face of the gear 3 facing the seating part 1 is flush with the end face of the pedal 2 facing the seating part 1. Thus, after the pedal 2, the gear 3 and the seating part 1 are pivotally connected, the upper side end face of the pedal 2 is attached to the seating part 1. Therefore, the gear 3 cannot move left and right relative to the pedal 2 and the seating part 1, and can only rotate relative to the pedal 2 and the seating part 1 or rotate together with the pedal 2 when the pedal 2 rotates upward.

[0051] In this embodiment, the limiting bump 11 is provided on the riding portion 1, and the arc-shaped limiting groove 20 is provided on the footrest 2, and the arc-shaped limiting groove 20 is provided outside the accommodation cavity 21 and communicates with the accommodation cavity 21. When the footrest 2 is in the first angular position, one side of the locking device extends into the arc-shaped limiting groove 20 and abuts against one end of the arc-shaped limiting groove 20 to cooperate with the footrest, so that the footrest 2 cannot rotate downward.

[0052] The locking device includes a locking member 4 that is axially movably connected to the riding portion 1, and a first elastic member 5 provided between the locking member 4 and the riding portion 1. In this embodiment, a first installation groove 12 is provided on the side of the riding portion 1 facing the footrest 2, and one side of the locking member 4 is axially movably placed in the first installation groove 12. The first installation groove 12 and the limiting bump 11 are spaced apart. The first elastic member 5 is provided as a compression spring and is provided between the locking member 4 and the bottom wall of the first installation groove 12.

[0053] On the side of the gear 3 facing the riding portion 1, multiple groups of locking grooves are sequentially arranged in the circumferential direction. Each group of locking grooves 32 includes a first locking groove 321 and a second locking groove 322 that are sequentially arranged in the circumferential direction. One side of both the first locking groove 321 and the second locking groove 322 can be in a blocking fit with the locking member 4, and the other side can be in an inclined surface fit with the locking member 4. In this embodiment, one side surface of both the first locking groove 321 and the second locking groove 322 is provided as a stop surface 3211, 3221 (as shown in Figure 6 , 7 ), and at least one side surface of both the first locking groove 321 and the second locking groove 322 is also provided as an inclined surface 3212, 3222 (as shown in Figure 6 , 7 ); when the locking member 4 extends into the first locking groove 321 or the second locking groove 322 and abuts against its stop surfaces 3211, 3221, the gear 3 is blocked by the locking member 4 and cannot rotate together with the downwardly rotating footrest 2; when the footrest 2 rotates upward and drives the gear 3 to rotate together, the inclined surfaces 3212, 3222 of the first locking groove 321 or the second locking groove 322 drive the locking member 4 to move in the direction towards the riding portion 1, specifically, move into the first installation groove 12.

[0054] In this embodiment, when the footrest 2 is in the first angular position, one side of the locking member 4 extends into the first locking groove 321 and abuts against its stop surface, and the locking member 4 also extends into the footrest 2 to cooperate with the footrest 2, that is, extends into the arc-shaped limiting groove 20 of the footrest 2 and abuts against one end of the arc-shaped limiting groove 20, so that the footrest 2 cannot rotate downward.

[0055] Preferably, when the tread 2 rotates upward from the first angular position to the third angle, the locking member 4 is completely disengaged from the tread 2 and the first locking groove 321 and faces the second locking groove 322 of the same set of locking grooves. Under the action of the first elastic member 5, one side of the locking member 4 extends into the second locking groove 322 and contacts its stop surface. When the tread 2 rotates upward from the second angular position to the third angle, the locking member 4 is completely disengaged from the second locking groove 322 and faces the first locking groove 321 of the adjacent set of locking grooves.

[0056] In this embodiment, the locking member 4 includes a main body 40 and a locking portion 41, and the locking portion 41 is disposed at one end of the main body 40 facing the tread 2 (as Figure 4 shown).

[0057] Preferably, the first locking groove 321 is set such that its maximum groove depth (in this embodiment, the groove depth at the position of its stop surface) is greater than the length of the locking portion 41, and the thickness of the main body 40 is greater than the thickness of the locking portion 41, and the thickness of the main body 40 is also greater than the height of the first locking groove 321. With such a setting, when the tread 2 is in the first angular position, the locking member 4 faces the first locking groove 321 and the first locking groove 321 communicates with the arc-shaped limiting groove 20. Under the action of the first elastic member 5, the locking member 4 moves in the direction toward the gear 3, and the locking portion 41 of the locking member 4 extends into the first locking groove 321, and a part of the side of the locking member main body 40 facing the gear 3 extends into the first locking groove 321 and abuts against its stop surface (as Figure 10 shown), and the part of the main body 40 on this side located outside the first locking groove 321 extends into the tread 2 and cooperates with the tread 2, that is, extends into the arc-shaped limiting groove 20 and abuts against one end of the arc-shaped limiting groove 20, and the tread 2 cannot rotate downward. And because when in the first angular position, the locking member main body 40 abuts against one end 201 in the arc-shaped limiting groove 20, it can form a more powerful support for the tread 2, so that the tread 2 can bear a greater weight when in the first angular position and will not rotate downward. In this way, it is safer and more reliable for children to use.

[0058] The second locking groove 322 is set such that its maximum groove depth (in this embodiment, the groove depth at the position of its stop surface) is not greater than the length of the locking portion 41. Thus, when the tread 2 rotates upward from the first angular position to the third angular position, the locking member 4 is completely disengaged from the tread 2 and the first locking groove 321 and faces the second locking groove 322 of the same set of locking grooves. Under the action of the first elastic member 5, the locking member moves in the direction of the gear 3, and only the locking portion 41 extends into the second locking groove 322 and abuts against its stop surface (as Figure 11As shown in FIG. 3 ), the main body 40 cannot extend into the second locking groove 322. In this arrangement, when the locking portion 41 is located in the second locking groove 322, the locking member 4 is only connected to the gear 3 and has no connection with the pedal 2, that is, it is completely separated from the pedal 2, so that the pedal 2 can rotate downward.

[0059] When the pedal 2 rotates upward from the second angle position to the third angle, the locking member 4 is completely separated from the second locking groove 322 and faces the first locking groove 321 of the adjacent group of locking grooves.

[0060] Preferably, the width of the main body 40 is also greater than the width of the locking portion 41. Thus, when in the first angle position, the locking member main body 40 has a greater supporting force on the footrest 2, further enabling the footrest 2 to bear a greater weight without rotating downwards when in the first angle position, making it safer and more reliable for children to use.

[0061] Furthermore, when the main body 40 of the locking member 4 extends into the first locking groove 321 and abuts against the stop surface 3211 of the first locking groove 321, the locking portion 41 contacts the inclined surface 3212 of the first locking groove 321. Thus, when the gear 3 is rotated together with the pedal 2 rotating upward, the inclined surface of the first locking groove 321 pushes the locking portion 41 to push the locking member 4 to move into the first installation groove 12.

[0062] The toggle device includes a toggle member 6 axially movably connected to the upper side of the footrest 2, and a second elastic member 7 disposed between the toggle member 6 and the footrest 2. In this embodiment, the upper side of the footrest 2 is provided with a second mounting groove 22 (such as Figure 5 As shown in FIG. 1 , one side of the toggle member 6 is axially movable and placed in the second mounting groove 22, and the second mounting groove 22 is arranged to communicate with the accommodating cavity 21, so that the toggle member 6 can extend into the accommodating cavity 21 and cooperate with the gear 3. The second elastic member 7 is arranged as a compression spring and is arranged between the toggle member 6 and the bottom wall of the second mounting groove 22.

[0063] A plurality of groups of toggle grooves are circumferentially arranged on one side of the gear 3 facing the seating portion 1, and each group of toggle grooves includes a first toggle groove 311 and a second toggle groove 312 that are circumferentially arranged in sequence and into which the toggle member 6 can extend. When the toggle member 6 is opposite to the first toggle groove 311 or the second toggle groove 312, under the action of the second elastic member 7, the toggle member 6 moves toward the direction of the gear 3 and one side extends into the first toggle groove 311 or the second toggle groove 312.

[0064] The first toggle groove 311 and the second toggle groove 312 each have one side that can be stopped by the toggle member 6, and the other side that can be stopped by the inclined surface of the toggle member 6. In this embodiment, the first toggle groove 311 and the second toggle groove 312 each have a side surface that is set as a stop surface 3111, 3121, and the first toggle groove 311 and the second toggle groove 312 each have at least one side surface that is set as an inclined surface 3112, 3122; when the toggle member 6 extends into the first toggle groove 311 or the second toggle groove 312 toward one side of the gear 3 and abuts against the stop surface 3111, 3121, when the pedal 2 rotates upward, the toggle member 6 can drive the gear 3 to rotate together, and when the pedal 2 rotates downward, the inclined surfaces 3112, 3122 of the first toggle groove 311 or the second toggle groove 312 drive the toggle member 6 to move toward the pedal 2.

[0065] In this embodiment, when the pedal 2 is located at the first angle position and cannot rotate downward, one side of the toggle member 6 extends into the second toggle groove 312 and abuts against the stop surface of the second toggle groove 312; when the pedal 2 is located at the second angle position, one side of the toggle member 6 extends into the first toggle groove 311 and abuts against the stop surface 3111 of the first toggle groove 311.

[0066] The side of the toggle member 6 facing the seating portion 1 is provided with a toggle portion 61 (such as Figure 9 As shown in the figure, when the toggle part 61 is opposite to the first toggle groove 311 or the second toggle groove 312, under the action of the second elastic member 7, the toggle part 61 will extend into the first toggle groove 311 or the second toggle groove 312. Preferably, one side surface of the toggle part 61 is also configured as an inclined surface 62 that can match the inclined surfaces 3112 and 3122 of the first toggle groove 311 and the second toggle groove 312, so that when the pedal 2 rotates downward, the toggle member 6 moves more smoothly.

[0067] In this embodiment, the toggle member 6 includes a body 63 and a blocking portion 64 extending upward from the body 63, the second elastic member 7 is configured as a compression spring, the compression spring is located between the bottom wall of the second mounting groove 22 and the blocking portion 64, and the toggle portion 61 is disposed on one side of the body 63. In other embodiments, the toggle portion 61 may also be provided with only the body 63, and the spring is directly disposed between the body 63 and the bottom wall of the second mounting groove 22. The toggle portion 61 may also be other known and feasible structures.

[0068] In this embodiment, the inclined surfaces 3112 and 3122 of the first and second shifting grooves 311 and 312 extend from the bottom of the stop surfaces 3111 and 3121 along the circumferential direction of the end surface of the gear 3 .

[0069] like Figure 8As shown, preferably, in the same group of toggle grooves, the angle A between the stop surface 3111 of the first toggle groove 311 and the stop surface 3121 of the second toggle groove 312 is equal to the angle of the pedal 2 rotating downward from the third angle position to the first angle position. That is to say, assuming that the pedal 2 rotates 30 degrees from the third angle position to the first angle position, the angle A between the stop surface 3111 of the first toggle groove 311 and the stop surface 3112 of the second toggle groove 312 is also 30 degrees. Such a setting can ensure that when the pedal 2 rotates upward from the second angle position to the third angle position and then rotates downward to the first angle position, the toggle member 6 can be opposite to the second toggle groove 312 of the same group of wave grooves, so that under the action of the second elastic member 7, the toggle member 6 moves toward one side of the gear 3, and its toggle portion 61 is inserted into the second toggle groove 312 and abuts against the stop surface of the second toggle groove 312.

[0070] In two adjacent groups of toggle grooves, the angle B between the stop surface 3121 of the second toggle groove 312 of one group of toggle grooves and the stop surface 3111 of the first toggle groove 311 of the adjacent group of toggle grooves is equal to the angle of the pedal 2 rotating downward from the third angle position to the second angle position. That is to say, assuming that the pedal 2 rotates upward from the first angle position to the third angle position, and then rotates 80 degrees from the third angle position to the second angle position, the angle B is also 80 degrees. Such a configuration can ensure that when the pedal 2 rotates upward from the first angle position to the third angle position and then rotates downward to the second angle position, the toggle portion 61 of the toggle member 6 can be opposite to the first toggle groove 311 of the adjacent group of toggle grooves, so that under the action of the second elastic member 7, the toggle member 6 moves toward one side of the gear 3, and its toggle portion 61 is inserted into the first toggle groove 311 and abuts against the stop surface of the first toggle groove 311.

[0071] Because the toggle slot is configured as above, it can ensure that when the footrest 2 is rotated upward from the first angle position / second angle position to the third angle position and then rotated downward, it can be accurately rotated to the preset second angle position / first angle position, and the adjustment operation of the angle of the footrest 2 is more intuitive.

[0072] The specific number of groups of the toggle grooves and the angles A and B before the stop surfaces of the toggle grooves can be set according to the angle differences among the first angle position, the second angle position and the third angle position.

[0073] Because the footrest 2 and the angle adjustment mechanism of the present invention adopt the above technical solution, when the footrest 2 is to be moved from the first angle position (such as Figure 1 ) to a second angle position (as shown Figure 2), the pedal 2 can be directly rotated upward, and the toggle part 61 in the second toggle groove 312 pushes the toggle member 6 to push the stop surface of the second toggle groove 312, thereby rotating with the gear 3. Because the gear 3 cannot move left and right, the inclined surface of the first locking groove 321 of the gear will push the locking part 41 of the locking member 4 to push the locking member 4 to move into the first installation groove 12; when the pedal 2 is rotated upward to the third angle position (as shown in FIG. Figure 12 As shown in the figure, the limiting protrusion 11 on the seat portion 1 abuts against the other end 202 of the arc-shaped limiting groove 20 of the pedal, so that the pedal 2 cannot rotate upward any more. At this time, the main body 40 of the locking member 4 has moved to a state of being completely separated from the first locking groove 321 and the arc-shaped limiting groove 20, and the locking portion 41 of the locking member 4 faces the second locking groove 322 in the same group of locking grooves, so that under the action of the first elastic member 5, the locking member 4 moves toward the gear 3 until the locking portion 41 of the locking member 4 is located in the second locking groove 322, and the locking portion 41 abuts against the stop surface of the second locking groove 322. Then, the pedal 2 is rotated downward to drive the toggle member 6 to rotate together. Because the toggle member 6 contacts the inclined surface of the second toggle groove 312 during the downward rotation of the pedal 2, the gear 3 does not rotate downward together with the pedal 2 and the toggle member 6, but remains stationary. In addition, the locking portion 41 abuts against the stop surface of the second locking groove 322 of the gear 3, which further ensures that the gear 3 cannot rotate downward together with the pedal 2. Because the gear 3 does not rotate or move left or right, under the action of the inclined surface of the second toggle groove 312, the toggle member 6 moves to the second When the pedal 2 rotates downward with the toggle member 6 to the second angle position, the limiting protrusion 11 on the seating portion 1 abuts against one end of the arc-shaped limiting groove 20 of the pedal 2, so that the pedal 2 cannot rotate downward any further, and in this state, the toggle member 6 is opposite to the first toggle groove 311 of the adjacent group of toggle grooves, so that under the action of the second elastic member 7, the toggle member 6 moves toward the direction of the gear 3 until the toggle portion 61 is inserted into the first toggle groove 311, and the toggle portion 61 contacts the stop surface of the first toggle groove 311 (such as Figure 12 As shown in FIG. 1 ). In this way, the footrest 2 is at the second angle position, thereby realizing the adjustment and switching of the footrest 2 from the first angle position to the second angle position. Because at the second angle position, the limiting protrusion 11 abuts against one end of the arc-shaped limiting groove 20, thereby forming a gear position. In this way, when the child's calf rests on the footrest 2, the footrest 2 will not rotate downward, thereby ensuring that when the footrest 2 is at the second angle position, the child can use it more safely and reliably.

[0074] During the process of the treadle 2 rotating downward from the third angular position to the second angular position, since the gear 3 cannot rotate, the locking portion 41 of the locking member 4 always remains in the second locking groove 322 and abuts against the stop surface of the second locking groove 322. That is, during this process, the gear 3 and the locking member 4 do not rotate or move, and always maintain a relative position with the seating part 1 unchanged. Therefore, when reaching the second angular position, the gear 3 and the locking member 4 still remain in this state. Also because of this, although the treadle 2 will first rotate to the first angular position during the process of rotating downward from the third angular position to the second angular position, since the locking portion 41 of the locking member 4 extends into the second locking groove 322, the locking member 4 does not cooperate with the treadle 2 at all, and the limit convex block 11 does not abut against one end of the arc-shaped limit groove 20. Thus, the treadle 2 will not be blocked from rotating downward at the first angular position, but can only continuously rotate downward to the second angular position until the limit convex block 11 abuts against one end of the arc-shaped limit groove 20 and will be blocked from moving downward.

[0075] When the pedal 2 in the second angular position is to be adjusted to the first angular position, the pedal 2 is also directly rotated upward, and the toggle member 6 in the first toggle groove 311 of the toggle portion 61 pushes the stop surface of the first toggle groove 311 to rotate with the gear 3; because the gear 3 cannot move left and right, the locking member 4 moves into the first mounting groove 12 under the push of the inclined surface of the second locking groove 322; when the pedal 2 is rotated upward to the third angular position, the limiting protrusion 11 on the sitting portion 1 abuts against the other end 202 of the arc-shaped limiting groove 20 of the pedal, so that the pedal 2 cannot rotate upward any more, and at this time, the locking member 4 has moved to completely disengage from the second locking groove 322 and is opposite to the first locking groove 321 of the next adjacent group of locking grooves, and the first locking groove 321 is connected to the arc-shaped limiting groove 20; thus, under the action of the first elastic member 5, the locking member 4 moves in the direction toward the gear 3 until the locking member body 40 extends into the gear 3 toward one side of the gear 3. The first locking groove 321 is in the arc-shaped limiting groove 20, the locking portion 41 of the locking member 4 is also in the first locking groove 321, and the locking member 4 abuts against the stop surface of the first locking groove 321, and one end of the arc-shaped limiting groove 20 is still at a certain distance from the locking member 4; then, the pedal 2 is rotated downward, and similarly, because the toggle member 6 contacts the inclined surface of the first toggle groove 311 during the downward rotation of the pedal 2, the gear 3 will not rotate with the pedal 2 and the toggle member 6 The first locking groove 321 of the gear 3 is abutted against the locking portion 41, which ensures that the gear 3 cannot rotate downward with the pedal 2; under the action of the inclined surface of the first toggle groove 311, the toggle member 6 moves into the first mounting groove 12; when the pedal 2 moves downward to the first angle position, one end of the arc-shaped limiting groove 20 abuts against the portion of the locking member 4 extending into the arc-shaped limiting groove 20, so that the pedal 2 can no longer rotate downward. In this state, the toggle member 6 has completely separated from the first toggle groove 311 and is opposite to the second toggle groove 312. Under the action of the second elastic member 7, the toggle member 6 moves to the point where its toggle portion 61 extends into the second toggle groove 312 and abuts against the stop surface of the second toggle member 6. At this time, the pedal 2 is at the first angle position relative to the seat portion 1 and cannot rotate downward, thereby realizing the rotation switching of the pedal 2 from the second angle position to the first angle position.

[0076] In this embodiment, when the footrest 2 is at the first angular position, the footrest 2 and the seating portion 1 are substantially parallel (eg, Figure 1 When the footrest 2 is at this angle, when the child sits in the stroller, his or her calves can also be stretched forward and rest on the footrest 2; alternatively, the seat backrest can be rotated backward to a certain angle, so that the seat portion 1 and the backrest can be used for the child to lie down and sleep, and the footrest 2 that is roughly parallel to the seat portion 1 is equivalent to extending the length of the child's sleeping space, allowing the child's calves to stretch more comfortably.

[0077] When the footrest 2 is in the second angular position, the footrest 2 is in a downwardly inclined state relative to the seating part 1 (as Figure 2 shown). When the footrest 2 is in this angular position, generally when a child is sitting in the stroller, the lower leg can naturally rest on the footrest 2 downward.

[0078] In other embodiments, the first angular position and the second angular position can also be other suitable and feasible angular positions, as long as the lower leg of the child can rest on them.

[0079] As described above, since the present invention adopts the above structure, when adjusting the footrest 2 from the first angular position to the second angular position, only need to directly rotate the footrest 2 upward, then the locking of the footrest can be unlocked by the gear unlocking and locking device, and then rotate the footrest downward to the second angular position, without any other additional operations, so the angle adjustment operation of the footrest is very simple; when the footrest is in the second angular position, only need to rotate the footrest upward to a certain angle and then rotate the footrest downward to the first angular position, which further makes the angle adjustment operation of the footrest simpler; in addition, when the footrest is rotated upward to the third angular position, the limiting convex block abuts against the other end of the arc-shaped limiting groove, so that the footrest cannot be rotated upward anymore, that is to say, when it is necessary to switch the footrest between the first angular position and the second angular position, only need to rotate the footrest upward until it cannot be rotated anymore and then rotate the footrest downward, which makes the angle adjustment operation of the footrest of the children's seat and the stroller of the present invention more intuitive and thus more convenient.

[0080] In this embodiment, a pivot seat 10 is provided on the front side of the seating part 1 (as Figure 2 shown), the upper side of the footrest 2 is pivotally connected to the pivot seat 10, and both the first installation groove 12 and the limiting convex block 11 are provided on the side of the pivot seat 10 facing the footrest 2.

[0081] In this embodiment, the seating part 1 is provided as a seat board, pivot seats are respectively provided on the left and right sides of the front side of the seat board, and there are two left and right footrests 2, which are respectively pivotally connected to the pivot seats on the left and right of the seat board. In other embodiments, the seating part 1 can also be provided as including left and right seat tubes, pivot seats are respectively provided on the front sides of the left and right seat tubes, and there are two left and right footrests 2, which are respectively pivotally connected to the pivot seats on the front sides of the left and right seat tubes.

[0082] Preferably, a connecting member or a footrest board is connected between the left and right footrests 2 to ensure the synchronization of the adjustment on both sides, and the child can rest the lower leg on any position according to his / her own comfort level, that is, it is more convenient and comfortable for the child to use.

[0083] Preferably, in order to make the backrest of the child more comfortable, a backrest 13 that can be adjusted in angle relative to the riding part 1 is pivotally connected to the rear side of the riding part 1. This is a conventional technique in the art, so it will not be described and limited herein.

[0084] As a preferred embodiment of the present invention, in the description of this specification, the description referring to terms such as "preferred" and "preferably" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0085] The above embodiments are only used to illustrate the detailed solutions of the present invention. The present invention is not limited to the above detailed solutions, that is, it does not mean that the present invention must rely on the above detailed solutions to be implemented. Those skilled in the art should understand that any improvement to the present invention, the equivalent replacement of the raw materials of the products of the present invention, the addition of auxiliary components, the selection of specific methods, etc. all fall within the protection scope and the disclosure scope of the present invention.

Claims

1. A footrest adjustment mechanism for a child seat, comprising a seating part and a footrest pivotally connected to the upper side of the seating part, the footrest being convertible relative to the seating part between a first angular position and a second angular position, characterized in that: The invention also comprises a gear rotatably arranged between the upper side of the footrest and the seating portion, and a locking device movably connected to the seating portion, wherein the gear can be driven to rotate upward when the footrest rotates upward; and the gear and the locking device are arranged such that when the footrest is at a first angle position, the locking device cooperates with the footrest so that the footrest cannot rotate downward relative to the seating portion; when the footrest is rotated upward from the first angle position, the gear rotating upward can drive the locking device to move and disengage from the cooperation with the footrest, so that the footrest can be rotated downward to a second angle position; The upper side of the pedal is movably connected with a toggle device, and the toggle device is arranged in cooperation with the gear. When the pedal rotates upward, the toggle device rotates together with the pedal and drives the gear to rotate upward; when the pedal rotates downward, the toggle device rotates downward together with the pedal and moves relative to the gear; the toggle device includes a toggle member connected to the pedal in a relatively axially movable manner, and a second elastic member arranged between the toggle member and the pedal; when the pedal rotates upward, the toggle member drives the gear to rotate upward; The gear is circumferentially provided with a plurality of groups of toggle grooves on one side of the seat portion, and each group of toggle grooves includes a first toggle groove and a second toggle groove which are circumferentially arranged in sequence and into which a toggle member can be inserted, and each of the first toggle groove and the second toggle groove has one side which can cooperate with the toggle member stopper, and the other side which can cooperate with the toggle member inclined surface; when one side of the toggle member extends into the first toggle groove or the second toggle groove and abuts against its stopper, the pedal rotates upward and the gear can be driven to rotate together through the toggle member; when the pedal rotates downward, the first toggle groove or the second toggle groove drives the toggle member to move in the direction toward the pedal through the inclined surface cooperation, at this time, the gear does not rotate with the pedal; when the pedal is at the first angular position and cannot rotate downward, one side of the toggle member extends into the second toggle groove and abuts against the second toggle groove stopper; when the pedal is at the second angular position, one side of the toggle member extends into the first toggle groove and abuts against the first toggle groove stopper; The locking device comprises a locking member connected to the seating portion on one side and movable axially relative to the seating portion, and a first elastic member disposed between the locking member and the seating portion; A plurality of groups of locking grooves are sequentially arranged in the circumferential direction on one side of the gear facing the seating portion, each group of locking grooves includes a first locking groove and a second locking groove sequentially arranged in the circumferential direction, and one side of the first locking groove and the second locking groove can be matched with the locking member to stop, and the other side can be matched with the inclined surface of the locking member; When the pedal is rotated upward to the third angle position, the locking device is completely disengaged from the pedal, and the pedal can be rotated downward to the second angle position; the pedal at the second angle position can be rotated upward to the third angle position and then rotated downward, and when it is rotated downward to the first angle position, the locking device cooperates with the gear and the pedal again so that the pedal cannot be rotated downward; Wherein, during the downward rotation of the pedal, the gear does not rotate downward with the pedal, and the gear and the locking device are always kept in the state of the third angle position relative to the seating part; A first limiting portion and a second limiting portion are respectively provided on the upper side of the pedal and the riding portion. When the pedal is in the second angular position, one side of the first limiting portion cooperates with the second limiting portion, and the pedal cannot rotate downward relative to the riding portion.

2. The footrest adjustment mechanism of a children's seat according to claim 1, characterized in that: A first installation groove is provided on one side of the riding portion facing the pedal. One side of the locking member is axially movably placed in the first installation groove, and the first elastic member is provided between the locking member and the bottom wall of the first installation groove.

3. The footrest adjusting mechanism of a child seat according to claim 2, characterized in that: When one side of the locking member extends into the first locking groove or the second locking groove and abuts against its stop, the gear cannot rotate together with the downwardly rotating pedal; when the pedal rotates upward, the inclined surface of the first locking groove or the second locking groove drives the locking member to move in the direction towards the riding portion. When the pedal is in the first angular position, one side of the locking member extends into the first locking groove and abuts against its stop, and the locking member also extends into the pedal and cooperates with the pedal, so that the pedal cannot rotate downward; when the pedal rotates upward from the first angular position to the third angular position, the locking member is completely disengaged from the pedal and the first locking groove and is opposite to the second locking groove of the same set of locking grooves. Under the action of the first elastic member, one side of the locking member extends into the second locking groove and contacts its stop. When the pedal rotates upward from the second angular position to the third angular position, the locking member is completely disengaged from the second locking groove and is opposite to the first locking groove of the adjacent set of locking grooves.

4. The footrest adjusting mechanism of a child seat according to claim 3, characterized in that: The locking member includes a main body and a locking portion. The locking portion is provided at one end of the main body facing the pedal, and the thickness of the main body is greater than the thickness of the locking portion. The thickness of the main body is also greater than the height of the first locking groove. The first locking groove is set such that its maximum groove depth is greater than the length of the locking portion, and the second locking groove is set such that its maximum groove depth is not greater than the length of the locking portion. When the pedal is in the first angular position, the locking portion extends into the first locking groove, and a part of the side of the main body facing the gear extends into the first locking groove and abuts against its stop surface. The part of the main body on this side outside the first locking groove extends into the pedal and cooperates with the pedal, and the pedal cannot rotate downward; when the pedal rotates upward from the first angle to the third angular position, the locking portion extends into the second locking groove and abuts against its stop surface.

5. The footrest adjusting mechanism of a child seat according to claim 1, characterized in that: The first limiting portion is an arc-shaped limiting groove provided on the pedal. Correspondingly, the second limiting portion is a limiting convex block provided on the riding portion, and the limiting convex block extends into the arc-shaped limiting groove; when the pedal is in the second angular position, one end of the arc-shaped limiting groove abuts against the limiting convex block, and the pedal cannot rotate downward relative to the riding portion; when the pedal rotates upward, one end of the arc-shaped limiting groove moves away from the limiting convex block. When the pedal rotates to the third angular position, the other end of the arc-shaped limiting groove abuts against the limiting convex block, and the pedal cannot rotate upward relative to the riding portion; when the pedal is in the first angular position, one side of the locking device extends into the arc-shaped limiting groove and abuts against one end of the arc-shaped limiting groove to realize cooperation with the pedal.

6. The footrest adjustment mechanism of a children's seat according to claim 5, characterized in that: A receiving cavity is concavely provided in the middle of the upper side of the pedal facing the riding portion. The gear is rotatably located in the receiving cavity; the arc-shaped limiting groove is provided on the pedal, and the arc-shaped limiting groove is provided outside the receiving cavity and communicates with the receiving cavity.

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