Front wheel control structure of baby stroller

Abstract

The front wheel control structure is characterized in that a push handle seat is arranged at a push handle of a frame of the front wheel control structure, a rotatable operation handle and a first rotating seat are arranged on the push handle seat, a rotatable second rotating seat is arranged on a front wheel seat, and a first locking mechanism is arranged between the second rotating seat and a connecting assembly; the switching of the front wheel assembly between a controllable orientation state and a free rotation state can be realized by locking or not locking the first locking mechanism; the first rotating seat and the second rotating seat are linked through a traction cable assembly; a linkage mechanism capable of controlling whether the operation handle is linked with the first rotating seat or not is arranged at the push handle seat; a second locking mechanism is arranged between the first rotating seat and the push handle seat and can be unlocked by a linkage mechanism; the universal rotation of the front wheel can be realized by unlocking the first locking mechanism; when the front wheel assembly is in the controllable orientation state, conversion between front wheel orientation and left-right rotation adjustment of the front wheel can be achieved by rotating the operation handle, the structure is novel, and operation is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of child strollers, and in particular to a front wheel control structure of a child stroller. Background Art

[0002] Strollers are essential travel tools for every family with children. For ease of portability and transportation, most strollers on the market are foldable. Existing strollers typically feature front-wheel steering mechanisms that can be switched between universal and fixed positions. However, most lack an adjustment mechanism to control left and right rotation of the front wheels in the fixed position. This makes steering difficult during travel, and sometimes requires lifting the stroller to achieve directional control. While some high-end strollers are equipped with front-wheel steering mechanisms that include a drive motor, these mechanisms are complex, costly, and difficult to operate. Summary of the Invention

[0003] The purpose of the present application is to provide a front wheel control structure for a child stroller to solve the problem that the front wheels of existing child strollers are difficult to steer. The structure has the functions of universal rotation of the front wheels, fixed rotation of the front wheels, and left and right rotation adjustment of the front wheels. The universal rotation of the front wheels can be achieved by releasing the lock of the first locking mechanism between the second rotating seat and the connecting assembly. When the front wheel assembly is in a controllable fixed rotation state, the switching between the front wheel fixed rotation and the left and right rotation adjustment of the front wheels can be achieved by rotating the operating handle. The structure is novel and easy to operate.

[0004] The technical solution of the present application is: a front wheel control structure of a child stroller, comprising a frame and a front wheel assembly, the upper portion of the front wheel assembly having a connecting assembly for rotatably connecting to the front wheel seat of the frame, the push handle seat being provided with an operating handle and a first swivel seat being respectively provided with an operating handle rotatable relative to the push handle seat, the front wheel seat of the frame being provided with a second swivel seat rotatable relative to the push handle seat, a first locking mechanism being provided between the second swivel seat and the connecting assembly, and the front wheel assembly being converted between a controllable directional state and a free rotation state (universal state) by controlling whether the first locking mechanism is locked or not; the first swivel seat and the second swivel seat being linked to each other by a traction rope assembly; the push handle seat being provided with a linkage mechanism for controlling whether the operating handle is linked to the first swivel seat; a second locking mechanism being provided between the first swivel seat and the push handle seat, and the second locking mechanism being unlocked by the above-mentioned linkage mechanism;

[0005] When the front wheel assembly is in a controllable directional state, the linkage mechanism has two working states: a front wheel directional state and a front wheel steering adjustment state;

[0006] When the linkage mechanism is in the front wheel directional state, the operating handle is disengaged from the first rotating seat, and the two cannot be linked. At this time, the second locking mechanism is in the locked state, the first rotating seat cannot rotate, and the second rotating seat is restrained by the traction rope assembly so that it cannot rotate relative to the front wheel seat, so that the front wheel assembly remains in the directional state;

[0007] When the linkage mechanism is in the front wheel steering adjustment state, the operating handle is linked with the first rotating seat, and the linkage mechanism releases the lock of the second locking mechanism. At this time, the operating handle, the first rotating seat, and the second rotating seat are in a linkage state, and the front wheel assembly can be driven to rotate left and right by rotating the operating handle;

[0008] The conversion of the linkage mechanism between the front wheel orientation state and the front wheel steering adjustment state is achieved by the above-mentioned operation control.

[0009] As a preferred technical solution, the linkage mechanism includes a mounting base provided at the bottom of the operating handle and rotatably connected to the push handle base, a third locking mechanism for locking the mounting base and the push handle base, and a fourth locking mechanism for locking the first rotating base and the mounting base;

[0010] When the linkage mechanism is in the front wheel directional state, the third locking mechanism is in the locked state, and the fourth locking mechanism is in the unlocked state;

[0011] When the linkage mechanism is in the front wheel steering adjustment state, the third locking mechanism is in the unlocked state, and the fourth locking mechanism is in the locked state.

[0012] As a preferred technical solution, the operating handle is rotatably arranged on the top of the push handle seat through a mounting seat, and the first rotating seat is rotatably arranged on the bottom of the push handle seat.

[0013] As a preferred technical solution, the third locking mechanism includes a first locking member installed in the first mounting groove of the push handle seat and can be extended and retracted relative to the first mounting groove, a first reset member arranged between the first mounting groove and the first locking member, a first locking groove arranged on the mounting seat for the first locking member to be locked into, and a first unlocking member arranged on the mounting seat and capable of pushing the first locking member out of the first locking groove; the mounting seat has a third mounting groove that communicates with the first locking groove, the first unlocking member can be slidably arranged in the third mounting groove and a third reset member is arranged between the two, and the outer end of the first unlocking member is exposed from the mounting seat to form a first operating part.

[0014] As a preferred technical solution, the second locking mechanism includes a third locking member installed in the fifth mounting groove of the first rotating seat and capable of extending and retracting relative thereto, a fourth restoring member provided between the fifth mounting groove and the third locking member, and a third locking groove provided on the mounting seat and for the third locking member to lock into; the third locking groove is connected to the first mounting groove;

[0015] When the third locking mechanism is unlocked, the first unlocking member is pressed, and the first unlocking member pushes the first locking member out of the first locking groove. The first locking member moves downward in the first installation groove and extends into the third locking groove to push the third locking member out of the third locking groove, thereby realizing the synchronous unlocking of the second locking mechanism.

[0016] As a preferred technical solution, the first rotating seat has a mounting column extending toward the operating handle, and the push handle seat has a movable groove for the mounting column to pass through and rotate; the fourth locking mechanism includes a second locking member installed in the second mounting groove of the mounting column and can be extended and retracted relative to it, a second reset member arranged between the second mounting groove and the second locking member, a second locking groove arranged on the mounting seat for the second locking member to be locked into, and a second unlocking member arranged on the mounting seat and capable of pushing the second locking member out of the second locking groove; the mounting seat has a fourth mounting groove communicating with the second locking groove, the second unlocking member can be slidably arranged in the fourth mounting groove, and the outer end of the second unlocking member is exposed from the mounting seat to form a second operating part.

[0017] As a preferred technical solution, the mounting seat has a limiting column corresponding to the second unlocking member, and the side of the second unlocking member has a limiting groove, which can be positioned in the locking position and unlocking position of the second unlocking member by tightly fitting with the limiting column.

[0018] As a preferred technical solution, the second lock slot and the second unlocking member are two groups and are symmetrically arranged on both sides of the mounting base; the first lock slot and the first unlocking member are one group and are arranged 90 degrees apart from the second lock slot and the second unlocking member on both sides.

[0019] As a preferred technical solution, the traction rope assembly consists of two traction ropes, the upper ends of the two traction ropes are symmetrically arranged on both sides of the first rotating seat, and the lower ends of the two traction ropes are staggered and connected to the second rotating seat respectively; when the first rotating seat and the operating handle rotate in conjunction, the second rotating seat rotates in the same direction as the first rotating seat under the linkage action of the traction rope assembly.

[0020] Compared with the prior art, this application has the following advantages:

[0021] 1. The present application solves the problem of difficult steering of the front wheels of existing child strollers. The present application has the functions of universal rotation of the front wheels, fixed rotation of the front wheels, and left and right rotation adjustment of the front wheels. The universal rotation of the front wheels can be achieved by releasing the lock of the first locking mechanism between the second rotating seat and the connecting assembly; when the front wheel assembly is in a controllable fixed rotation state, the switching between the front wheel fixed rotation and the left and right rotation adjustment of the front wheels can be achieved by rotating the operating handle. The structure is novel and the operation is convenient.

[0022] 2. In the linkage mechanism of the present application, the second lock slot and the second unlocking member are two groups, and are symmetrically arranged on both sides of the mounting base; the first lock slot and the first unlocking member are one group, and are arranged 90 degrees apart from the second lock slot and the second unlocking member on both sides; this design can automatically lock the fourth locking mechanism after the third locking mechanism is released, regardless of turning the operating handle 90 degrees left or right, which is simple and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. The drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not intended to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size, without affecting the efficacy and objectives that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0025] Figure 1 This is a schematic diagram of the front angle structure when the application is in the front wheel directional state;

[0026] Figure 2 This is a schematic diagram of the side structure of the present application when it is in the front wheel directional state;

[0027] Figure 3 for Figure 2 A partial enlarged view of the connection between the middle operating handle and the push handle;

[0028] Figure 4 for Figure 2 Schematic diagram of the assembly structure of the connection between the middle mounting seat and the push handle seat;

[0029] Figure 5 This is a schematic diagram of the front angle structure of the present application when the front wheel is in the steering adjustment state; (after the operating handle is turned left from the horizontal position)

[0030] Figure 6 This is a schematic diagram of the front angle structure when the application is in the front wheel steering adjustment state; (after the operating handle is turned right from flat)

[0031] Figure 7 This is a schematic diagram of the side structure of the present application when it is in the front wheel steering adjustment state;

[0032] Figure 8 for Figure 7 A partial enlarged view of the connection between the middle operating handle and the push handle;

[0033] Figure 9 for Figure 7 Schematic diagram of the assembly structure of the connection between the middle mounting seat and the push handle seat;

[0034] Figure 10 for Figure 6 Schematic diagram of the front angle structure when the center handle drives the front wheel to turn left;

[0035] Figure 11 for Figure 6 Schematic diagram of the front angle structure when the center handle drives the front wheel to turn right;

[0036] Figure 12 This is a simplified structural diagram of the linkage connection between the first rotating seat and the second rotating seat in this application;

[0037] Figure 13 Schematic diagram of the cooperation structure between the second locking member and the fiber column in this application;

[0038] Figure 14 This is a partial cross-sectional enlarged structural schematic diagram of the front wheel assembly and the front wheel seat in this application.

[0039] in:

[0040] 1 frame; 101 front wheel seat; 102 push handle; 103 push handle seat; 1031 movable slot;

[0041] 2 front wheel assembly; 201 connecting assembly;

[0042] 3 operating handles; 301 mounting base; 3011 limiting column;

[0043] 4 first rotating seat; 401 mounting column; 402, 403 arc-shaped grooves;

[0044] 5 second rotating seat; 501 collar portion; 502 sector portion;

[0045] 6. First locking mechanism;

[0046] 7 traction rope assembly; 701, 702 traction rope;

[0047] 8 linkage mechanism; 810 third locking mechanism; 811 first mounting slot; 812 first locking member; 813 first resetting member; 814 first locking slot; 815 first unlocking member; 816 third mounting slot; 817 third resetting member; 820 fourth locking mechanism; 821 second mounting slot; 822 second locking member; 823 second resetting member; 824 second locking slot; 825 second unlocking member; 8251 limiting slot; 826 fourth mounting slot;

[0048] 9 second locking mechanism; 901 fifth mounting slot; 902 third locking member; 903 fourth resetting member; 904 third locking slot. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. It is understood that, in the absence of conflict, some technical means of the various embodiments described herein can be replaced or combined with each other.

[0050] In the description and claims of this application, the terms "first," "second," etc., if used, are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. Thus, a term defined as "first," "second," etc. may explicitly or implicitly include one or more of such objects. Furthermore, "a," "an," and similar terms do not indicate a limitation on quantity, but rather indicate the presence of at least one, and "plurality" means at least two.

[0051] In the description of the specification and claims of this application, if there are terms such as "connect", "install", "fix", "accommodate", etc., unless otherwise specified, they should be understood in a broad sense. For example, "connection" can be a separate connection or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a non-detachable connection or a detachable connection. For another example, "accommodate" does not necessarily mean complete accommodation of the entire body. This concept also includes the accommodation of a part that protrudes from the outside. For those skilled in the art, the specific meanings of the aforementioned terms in this application can be understood according to the specific circumstances.

[0052] In the description and claims of this application, if there are terms such as "upper," "lower," and "horizontal" indicating orientations or positional relationships, these are based on the orientations or positional relationships shown in the accompanying drawings. They are used only to facilitate a clear and simplified description of this application and are not intended to indicate or imply that the elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. These directional terms are relative concepts and are used for relative description and clarification. They may change accordingly depending on the orientation of the components in the drawings. For example, if the device in the figure is turned over, elements described as "below" other elements would be positioned "above" the other elements.

[0053] In the description of the specification and claims of this application, if the term "if" is present, it can generally be interchanged with "when" or "at" or "in response to determining" or "in response to detecting", depending on the context.

[0054] In the description of the specification and claims of this application, if there is a "direction" of movement, including movement with a directional component, the term "in the direction" is not necessarily understood as movement only in that one direction. For those skilled in the art, the specific meaning of the aforementioned terms in this application can be understood according to the specific circumstances.

[0055] like Figures 1 to 14 As shown, a front wheel control structure of a child stroller includes a frame 1 and a front wheel assembly 2, the upper part of the front wheel assembly 2 has a connecting assembly 201 for rotatably connecting to the front wheel seat 101 of the frame 1, a push handle seat 103 is provided at the push handle 102 of the frame 1, and an operating handle 3 and a first rotating seat 4 that can rotate relative to the push handle seat 103 are respectively provided on the push handle seat 103, and a second rotating seat 5 that can rotate relative to the front wheel seat 101 of the frame 1 is provided. A first locking mechanism 6 is provided between the second rotating seat 5 and the connecting assembly 201, and the front wheel assembly 2 is converted between a controllable directional state and a free rotation state (universal state) by controlling whether the first locking mechanism 6 is locked or not; the first rotating seat 4 and the second rotating seat 5 are linked by a traction rope assembly 7; the push handle seat 103 is provided with a linkage mechanism 8 that can control whether the operating handle 3 is linked to the first rotating seat 4; a second locking mechanism 9 is provided between the first rotating seat 4 and the push handle seat 103, and the second locking mechanism 9 can be unlocked by the above-mentioned linkage mechanism 8;

[0056] When the front wheel assembly 2 is in a controllable directional state (the first locking mechanism 6 is in a locked state), the linkage mechanism 8 has two working states: a front wheel directional state and a front wheel steering adjustment state;

[0057] When the linkage mechanism 8 is in the front wheel directional state, the operating handle 3 is disengaged from the first rotating seat 4, and the two cannot be linked. At this time, the second locking mechanism 9 is in the locked state, the first rotating seat 4 cannot rotate, and the second rotating seat 5 is restrained by the traction rope assembly 7 so that it cannot rotate relative to the front wheel seat 101, so that the front wheel assembly 2 remains in the directional state;

[0058] When the linkage mechanism 8 is in the front wheel steering adjustment state, the operating handle 3 is linked with the first rotating seat 4, and the linkage mechanism 8 releases the lock of the second locking mechanism 9. At this time, the operating handle 3, the first rotating seat 4, and the second rotating seat 5 are in a linked state, and the front wheel assembly 2 can be driven to rotate left and right by rotating the operating handle 3;

[0059] The conversion of the linkage mechanism 8 between the front wheel orientation state and the front wheel steering adjustment state is achieved by the above-mentioned operation handle 3 operation control.

[0060] In this embodiment, the linkage mechanism 8 includes a mounting base 301 provided at the bottom of the operating handle 3 and rotatably connected to the push handle base 103, a third locking mechanism 810 for locking the mounting base 301 and the push handle base 103, and a fourth locking mechanism 820 for locking the first rotating base 4 and the mounting base 301;

[0061] When the linkage mechanism 8 is in the front wheel directional state, the third locking mechanism 810 is in the locked state, and the fourth locking mechanism 820 is in the unlocked state;

[0062] When the linkage mechanism 8 is in the front wheel steering adjustment state, the third locking mechanism 810 is in the unlocked state, and the fourth locking mechanism 820 is in the locked state.

[0063] In this embodiment, the operating handle 3 is rotatably disposed on the top of the push handle seat 103 via a mounting seat 301 , and the first rotating seat 4 is rotatably disposed on the bottom of the push handle seat 103 .

[0064] In this embodiment, the third locking mechanism 810 includes a first locking member 812 installed in the first mounting groove 811 of the push handle seat 103 and capable of extending and retracting relative thereto, a first resetting member 813 arranged between the first mounting groove 811 and the first locking member 812, a first locking groove 814 arranged on the mounting seat 301 for the first locking member 812 to be locked into, and a first unlocking member 815 arranged on the mounting seat 301 and capable of pushing the first locking member 812 out of the first locking groove 814; the mounting seat 301 has a third mounting groove 816 that communicates with the first locking groove 814, the first unlocking member 815 can be slidably arranged in the third mounting groove 816 and a third resetting member 817 is arranged between the two, and the outer end of the first unlocking member 815 is exposed from the mounting seat 301 to form a first operating part.

[0065] In this embodiment, the second locking mechanism 9 includes a third locking member 902 mounted in the fifth mounting groove 901 of the first rotating seat 4 and capable of extending and retracting relative thereto, a fourth restoring member 903 disposed between the fifth mounting groove 901 and the third locking member 902, and a third locking groove 904 disposed on the mounting seat 301 and into which the third locking member 902 is locked; the third locking groove 904 is connected to the first mounting groove 811. When the third locking mechanism 810 is unlocked, the first unlocking member 815 is pressed, which pushes the first locking member 812 out of the first locking groove 814. The first locking member 812 moves downward within the first mounting groove 811 and extends into the third locking groove 904, pushing the third locking member 902 out of the third locking groove 904, thereby achieving synchronous unlocking of the second locking mechanism 9. The linkage design of the third locking mechanism 810 and the second locking mechanism 9 makes the operation of the front wheel assembly 2 more convenient and quick when converting the directional state to the steering adjustment state, without the need to unlock the third locking mechanism 810 and the second locking mechanism 9 separately.

[0066] In this embodiment, the first rotating seat 4 has a mounting column 401 extending toward the operating handle 3, and the push handle seat 103 has a movable groove 1031 for the mounting column 401 to pass through and rotate; the fourth locking mechanism 820 includes a second locking member 822 installed in the second mounting groove 821 of the mounting column 401 and capable of extension and contraction relative thereto, a second reset member 823 arranged between the second mounting groove 821 and the second locking member 822, a second locking groove 824 arranged on the mounting seat 301 for the second locking member 822 to be locked therein, and a second unlocking member 825 arranged on the mounting seat 301 and capable of pushing the second locking member 822 out of the second locking groove 824; the mounting seat 301 has a fourth mounting groove 826 communicated with the second locking groove 824, the second unlocking member 825 can be slidably arranged in the fourth mounting groove 826, and the outer end of the second unlocking member 825 is exposed from the mounting seat 301 to form a second operating part.

[0067] like Figure 13 As shown, preferably, the mounting seat 301 has a limiting column 3011 corresponding to the second unlocking member 825, and the side of the second unlocking member 825 has a limiting groove 8251, and the limiting groove 8251 can be positioned in the locking position and unlocking position of the second unlocking member 825 by tightly fitting with the limiting column 3011.

[0068] In this embodiment, the second locking slots 824 and the second unlocking members 825 form two sets, symmetrically arranged on either side of the mounting base 301. The first locking slots 814 and the first unlocking members 815 form a single set, and are spaced 90 degrees apart from the second locking slots 824 and second unlocking members 825 on either side. This design allows the fourth locking mechanism 820 to be automatically locked after the third locking mechanism 810 is released, regardless of whether the operating handle is turned 90 degrees left or right, making operation simple and convenient.

[0069] Preferably, the opening diameter of the movable groove 1031 of the push handle seat 103 has a limiting effect on the mounting column 401. When the linkage mechanism 8 is in the front wheel directional state, that is, the third locking mechanism 810 is in the locked state, the mounting column 401 is located in the middle position of the movable groove 1031; after the third locking mechanism 810 is unlocked, if the operating handle is turned 90 degrees to the left, the mounting column 401 slides to one side end of the movable groove 1031; after the third locking mechanism 810 is unlocked, if the operating handle is turned 90 degrees to the right, the mounting column 401 slides to the other side end of the movable groove 1031; this limiting design can facilitate the conversion between the front wheel directional state and the front wheel steering adjustment state, that is, no matter whether the operating handle 3 is turned left or right, when it is rotated to the point where it can no longer be rotated, the fourth locking mechanism 820 can be automatically locked. The operation is simple and reliable, and difficult positioning is avoided.

[0070] In this embodiment, in order to facilitate assembly, the mounting seat 301 is preferably formed by docking and splicing the left and right seat bodies; the push handle seat 103 is preferably formed by splicing and assembling multiple parts. Since the splicing structure is diverse and it is not the main protected part of this application, no specific restrictions or detailed description will be made here.

[0071] like Figure 12 As shown, in this embodiment, the traction cable assembly 7 is two traction cables 701 and 702, the upper ends of the two traction cables 701 and 702 are symmetrically arranged on both sides of the first rotating seat 4, and the lower ends of the two traction cables 701 and 702 are staggered and respectively connected to the second rotating seat 5; when the first rotating seat 4 and the operating handle 3 rotate in conjunction, the second rotating seat 5 rotates in the same direction as the first rotating seat 4 under the linkage action of the traction cable assembly 7.

[0072] Preferably, the first rotating seat 4 has arcuate grooves 402 and 403 which are arranged symmetrically on the left and right and accommodate the two traction ropes 701 and 702, and the ends of the two arcuate grooves 402 and 403 on the same side have clamping grooves for the ends of the traction ropes 701 and 702; the second rotating seat 5 includes a ring portion 501 which is sleeved on the front wheel seat 101 and a fan-shaped portion 502 extended from one side of the ring portion 501, and the lower ends of the two traction ropes 701 and 702 are staggered and connected to both sides of the fan-shaped portion 502.

[0073] like Figure 14 As shown, the first locking mechanism 6 between the second rotating seat 5 and the connecting component 201 adopts a locking pin mechanism with a relatively simple structure. It can directly or indirectly drive the locking pin to be inserted into the pin holes of the second rotating seat 5 and the connecting component 201 at the same time to achieve locking of the two, and can also achieve unlocking by driving the locking pin out of the pin hole of one of them. It is a conventional locking mechanism in this technical field, so no specific restrictions or detailed description are made here.

[0074] In this embodiment, preferably, when the front wheel assembly 2 is in a controllable orientation state (the first locking mechanism 6 is locked) and the linkage mechanism 8 is in a front wheel orientation state, the operating handle 3 is in a horizontal position; when the front wheel assembly 2 is in a controllable orientation state (the first locking mechanism 6 is locked) and the linkage mechanism 8 is in a front wheel steering adjustment state, the operating handle 3 is in a vertical position. This design makes operation more convenient for the operator and makes it easier to understand the current state of the front wheel assembly 2.

[0075] The working principle of this application is:

[0076] When the front wheel assembly 2 needs to be universally rotated, the first locking mechanism 6 between the second rotating seat 5 and the connecting assembly 201 is released. At this time, the rotation between the front wheel seat 101 and the connecting assembly 201 is not restricted, and the front wheel assembly 2 can rotate 360 ​​degrees to achieve universal rotation.

[0077] like Figures 1 to 4 As described, when the front wheel assembly 2 is in a controllable directional state (the first locking mechanism 6 between the front wheel assembly 2 and the second rotating seat 5 is in a locked state) and the linkage mechanism 8 is in the front wheel directional state, the third locking mechanism 810 is in a locked state, that is, the first locking member 812 is locked into the first locking groove 814. At this time, the operating handle 3 is locked and cannot rotate, and the second locking member 822 of the fourth locking mechanism 820 is in a staggered state with the second locking groove 824, so the fourth locking mechanism 820 is in an unlocked state; the operating handle 3 is disengaged from the first rotating seat 4, and the two cannot be linked. At this time, the second locking machine 9 is in a locked state, the first rotating seat 4 cannot rotate, and the second rotating seat 5 is restrained by the traction rope assembly 7 so that it cannot rotate relative to the front wheel seat 101, so that the front wheel assembly 2 remains in a directional state.

[0078] like Figures 5 to 9 When the front wheel assembly 2 requires steering adjustment, the first unlocking member 815 is pressed, pushing the first locking member 812 out of the first locking slot 814 and releasing the third locking mechanism 810. Simultaneously, the first locking member 812 moves downward within the first mounting slot 811 and extends into the third locking slot 904, pushing the third locking member 902 out of the third locking slot 904, thereby simultaneously unlocking the second locking mechanism 9. At this point, the operating handle 3 and the first rotating base 4 can both rotate relative to the push handle base 103. Then, turning the operating handle 90 degrees left or right causes the second locking member 822 of the fourth locking mechanism 820 to align with one of the second locking slots 824. At this point, the second locking member 822, under the resetting action of the second resetting member 823, locks into the second locking slot 824, automatically locking the fourth locking mechanism 820. The first locking member 812 of the third locking mechanism 810 is offset from the first locking slot 814, thus unlocking the third locking mechanism 810. At this time, the front wheel assembly 2 is in a controllable directional state (the first locking mechanism 6 between the front wheel assembly 2 and the second rotating seat 5 is in a locked state) and the linkage mechanism 8 is in a front wheel steering adjustment state. The operating handle 3, the first rotating seat 4, and the second rotating seat 5 are in a linkage state. The front wheel assembly 2 can be driven to rotate left and right by rotating the operating handle 3. Figure 10 and Figure 11 .

[0079] When the front wheel assembly 2 needs to be switched from the steering adjustment state to the directional state, the second unlocking member 825 is pressed, and its limiting groove 8251 slides from the locked position to the unlocked position through a tight fit with the limiting post 3011 and is positioned and maintained in the unlocked position. At this time, the second unlocking member 825 moves downward to push the second locking member 822 out of the second locking groove 824, thereby unlocking the fourth locking mechanism 820. Then, the operating handle 3 is rotated in the opposite direction to return it to the horizontal state, and the third locking mechanism 810 and the second locking mechanism 9 are locked again, and the linkage mechanism 8 enters the front wheel directional state.

[0080] The present application solves the problem that the front wheels of existing strollers are difficult to steer. The application has the functions of front wheel universal rotation, front wheel fixed rotation and front wheel left and right rotation adjustment. The front wheel universal rotation can be achieved by releasing the lock of the first locking mechanism 6 between the second rotating seat 5 and the connecting component 201. When the front wheel assembly 2 is in a controllable fixed rotation state (the first locking mechanism 6 is in a locked state), the front wheel fixed rotation and the front wheel left and right rotation adjustment can be switched by rotating the operating handle 3. The structure is novel and the operation is convenient.

[0081] As preferred embodiments of the present application, the reference terms "preferred," "optional," etc., in this specification, mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations 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 any appropriate manner in any one or more embodiments or examples.

[0082] The above embodiments are merely illustrative of the detailed scheme of the present application. The present application is not limited to the above detailed scheme, which does not mean that the present application must rely on the above detailed scheme to be implemented. Those skilled in the art should understand that any improvements to the present application, equivalent replacement of raw materials of the present application product, addition of auxiliary ingredients, and selection of specific methods, etc., all fall within the scope of protection and disclosure of the present application.

Claims

1. A front wheel control structure for a child stroller, comprising a frame and a front wheel assembly, wherein the upper portion of the front wheel assembly has a connecting assembly for rotatably connecting to a front wheel seat of the frame, characterized in that: The push handle of the bicycle frame is provided with a push handle seat, and the push handle seat is respectively provided with an operating handle and a first rotating seat that can rotate relative to the push handle seat, and a second rotating seat that can rotate relative to the push handle seat is provided on the front wheel seat of the bicycle frame, and a first locking mechanism is provided between the second rotating seat and the connecting assembly, and the front wheel assembly can be switched between a controllable directional state and a free rotation state by controlling whether the first locking mechanism is locked or not; the first rotating seat and the second rotating seat are linked to each other by a traction rope assembly; the push handle seat is provided with a linkage mechanism that can control whether the operating handle is linked to the first rotating seat or not; a second locking mechanism is provided between the first rotating seat and the push handle seat, and the second locking mechanism can be unlocked by the above-mentioned linkage mechanism; When the front wheel assembly is in a controllable directional state, the linkage mechanism has two working states: a front wheel directional state and a front wheel steering adjustment state; When the linkage mechanism is in the front wheel directional state, the operating handle is disengaged from the first rotating seat, and the two cannot be linked. At this time, the second locking mechanism is in the locked state, the first rotating seat cannot rotate, and the second rotating seat is restrained by the traction rope assembly so that it cannot rotate relative to the front wheel seat, so that the front wheel assembly remains in the directional state; When the linkage mechanism is in the front wheel steering adjustment state, the operating handle is linked with the first rotating seat, and the linkage mechanism releases the lock of the second locking mechanism. At this time, the operating handle, the first rotating seat, and the second rotating seat are in a linkage state, and the front wheel assembly can be driven to rotate left and right by rotating the operating handle; The conversion of the linkage mechanism between the front wheel orientation state and the front wheel steering adjustment state is achieved by the above-mentioned operation control.

2. The front wheel control structure of a child stroller according to claim 1, characterized in that: The linkage mechanism includes a mounting base provided at the bottom of the operating handle and rotatably connected to the push handle base, a third locking mechanism for locking the mounting base and the push handle base, and a fourth locking mechanism for locking the first rotating base and the mounting base; When the linkage mechanism is in the front wheel directional state, the third locking mechanism is in the locked state, and the fourth locking mechanism is in the unlocked state; When the linkage mechanism is in the front wheel steering adjustment state, the third locking mechanism is in the unlocked state, and the fourth locking mechanism is in the locked state.

3. The front wheel control structure of a child stroller according to claim 2, characterized in that: The operating handle is rotatably arranged on the top of the push handle seat through a mounting seat, and the first rotating seat is rotatably arranged on the bottom of the push handle seat.

4. The front wheel control structure of a child stroller according to claim 3, characterized in that: The third locking mechanism includes a first locking member installed in the first mounting groove of the push handle seat and can be extended and retracted relative to the first locking member, a first reset member arranged between the first mounting groove and the first locking member, a first locking groove arranged on the mounting seat for the first locking member to be locked into, and a first unlocking member arranged on the mounting seat and capable of pushing the first locking member out of the first locking groove; the mounting seat has a third mounting groove connected to the first locking groove, the first unlocking member can be slidably arranged in the third mounting groove and a third reset member is arranged between the two, and the outer end of the first unlocking member is exposed from the mounting seat to form a first operating part.

5. The front wheel control structure of a child stroller according to claim 4, characterized in that: The second locking mechanism includes a third locking member installed in the fifth mounting groove of the first rotating base and capable of extending and retracting relative thereto, a fourth restoring member provided between the fifth mounting groove and the third locking member, and a third locking groove provided on the mounting base and for the third locking member to lock into; the third locking groove is connected to the first mounting groove; When the third locking mechanism is unlocked, the first unlocking member is pressed, and the first unlocking member pushes the first locking member out of the first locking groove. The first locking member moves downward in the first installation groove and extends into the third locking groove to push the third locking member out of the third locking groove, thereby realizing the synchronous unlocking of the second locking mechanism.

6. The front wheel control structure of a child stroller according to claim 3, characterized in that: The first rotating seat has a mounting post extending toward the operating handle, and the push handle seat has a movable groove for the mounting post to pass through and rotate; the fourth locking mechanism includes a second locking member installed in the second mounting groove of the mounting post and capable of extending and retracting relative to it, a second reset member arranged between the second mounting groove and the second locking member, a second locking groove arranged on the mounting seat for the second locking member to be locked into, and a second unlocking member arranged on the mounting seat and capable of pushing the second locking member out of the second locking groove; the mounting seat has a fourth mounting groove communicating with the second locking groove, the second unlocking member can be slidably arranged in the fourth mounting groove, and the outer end of the second unlocking member is exposed from the mounting seat to form a second operating part.

7. The front wheel control structure of a child stroller according to claim 6, characterized in that: The mounting seat has a limiting column corresponding to the second unlocking member, and the side of the second unlocking member has a limiting groove, which can be positioned in the locking position and the unlocking position of the second unlocking member by tightly fitting with the limiting column.

8. The front wheel control structure of a child stroller according to claim 1, characterized in that: The traction rope assembly consists of two traction ropes, the upper ends of which are symmetrically arranged on both sides of the first rotating seat, and the lower ends of the two traction ropes are staggered and connected to the second rotating seat respectively; when the first rotating seat and the operating handle rotate in conjunction, the second rotating seat rotates in the same direction as the first rotating seat under the linkage action of the traction rope assembly.

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