Trolley

Abstract

The utility model belongs to the technical field of children products, and discloses a cart. The cart comprises a frame, a push handle mechanism and a handle unlocking mechanism. The push handle mechanism comprises a push rod rotationally installed on the frame, a handle part rotationally connected with the push rod and a handle locking structure used for locking relative rotation of the handle part and the push rod. The handle unlocking mechanism comprises an unlocking block and a linkage structure; the unlocking block moves on the frame; the linkage structure is connected between the unlocking block and the handle locking structure; the unlocking block is in linkage with the push rod so as to drive the unlocking block to move when the push rod rotates relative to the frame, and the unlocking block drives the handle locking structure to be unlocked through the linkage structure. According to the cart, the height of the push handle mechanism can be reduced, and the cart can be conveniently stored.

Description

TECHNICAL FIELD

[0001] The utility model relates to children's articles technical field especially relates to a cart. BACKGROUND

[0002] The child cart is one of the tools for taking care of the baby.

[0003] The child cart generally includes the base assembly, is equipped with the seat assembly and the push handle mechanism on the base assembly, the baby is seated on the seat assembly, and the parent drives the push handle mechanism to drive the child cart to move.

[0004] When the family goes out, in order to take care of the baby, the parent will also choose to carry the child cart in the trunk when going out. But the push handle mechanism of the child cart is generally high, which may cause the child cart to be unable to be put into the trunk. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a cart, which can solve the technical problem of the high push handle mechanism and large space occupation of the child cart in the prior art.

[0006] To achieve this purpose, the utility model adopts the following technical scheme:

[0007] A cart, comprising:

[0008] A frame;

[0009] A push handle mechanism, comprising a push rod rotatably installed on the frame, a handle part rotatably connected with the push rod and a handle locking structure for locking the relative rotation of the handle part and the push rod;

[0010] A handle unlocking mechanism, comprising an unlocking block movably installed on the frame and a linkage structure connected between the unlocking block and the handle locking structure;

[0011] The unlocking block is linked with the push rod to drive the unlocking block to move when the push rod rotates relative to the frame, and the unlocking block drives the handle locking structure to be unlocked through the linkage structure.

[0012] Optionally, the push rod abuts against the unlocking block and drives the unlocking block to move when the push rod rotates relative to the frame.

[0013] The push rod is provided with a folding unlocking guide surface abutting against the unlocking block, and the unlocking block slides along the folding unlocking guide surface with the rotation of the push rod.

[0014] Optionally, the push rod is provided with a first avoiding groove on one side of the frame, the first avoiding groove is arranged along the rotation direction of the push rod relative to the frame, the unlocking block slides in the first avoiding groove, and the folding unlocking guide surface is arranged on the inner wall of the first avoiding groove and guides the unlocking block to move in the direction of separating from the first avoiding groove when the unlocking block slides relative to the folding unlocking guide surface.

[0015] Optionally, the first avoiding groove has two oppositely arranged inner walls along the extension direction thereof, and at least one of the two inner walls forms the folding unlocking guide surface.

[0016] Optionally, the handle locking structure comprises:

[0017] The handle locking member is movably connected with the push rod and the handle part.

[0018] The handle locking member driving member is movably connected with the push rod and the handle part, the handle locking member driving member cooperates with the handle locking member and can drive the handle locking member to move from the handle locking member locking position to the handle locking member unlocking position, in the handle locking member locking position, the push rod and the handle part are locked, and in the handle locking member unlocking position, the handle part can be folded towards the push rod.

[0019] The linkage structure is a traction cable, one end of the traction cable is connected with the unlocking block, the other end of the traction cable is connected with the handle locking member driving member, the unlocking block is movable relative to the frame and can drive the handle locking member driving member to move through the traction cable, so that the handle locking member driving member drives the handle locking member to move from the handle locking member locking position to the handle locking member unlocking position.

[0020] Optionally, a push rod rotation unlocking control part is arranged between the push rod and the frame, and operation of the push rod rotation unlocking control part can lock or unlock the push rod relative to the frame.

[0021] Optionally, the frame comprises a frame body, a rotating seat rotatably installed on the top of the frame body, and a rotation locking structure for locking the relative position relationship between the rotating seat and the frame body; the stroller further comprises a seat pocket arranged in the rotating seat.

[0022] The push rod is rotatably installed on the rotating seat, and the stroller further comprises a rotation unlocking structure, the rotation locking structure cooperates with the push rod to unlock the rotation locking structure when the push rod rotates.

[0023] Optionally, the rotation locking structure comprises a rotation locking member movably arranged on the rotation base and a rotation locking slot arranged on the frame body, and the rotation locking member is moved to the rotation locking slot to realize the rotation locking of the rotation base and the frame body.

[0024] The rotation unlocking structure is arranged on the push rod and moves the rotation locking member away from the rotation locking slot when the push rod rotates to realize the relative rotation of the rotation base and the frame body.

[0025] Optionally, the frame body is provided with a rotating slot with an upward opening, the rotation base is provided with a rotating disc rotatably arranged in the rotating slot, the rotation locking slot is arranged towards the opening of the rotating slot, and the rotation locking member moves in the radial direction of the rotating disc between the rotation locking slot and the rotating slot.

[0026] Optionally, the rotation unlocking structure comprises a rotation unlocking guide surface arranged on the side of the push rod towards the rotation base, and the rotation unlocking guide surface abuts against the rotation locking member to push the rotation locking member to move away from the rotation locking slot when the push rod and the frame body rotate.

[0027] The rotation unlocking guide surface is a whole inclined surface and generates relative sliding with the rotation locking member when the push rod rotates.

[0028] The rotation unlocking guide surface and the folding unlocking guide surface are arranged on the extension of the push rod towards the frame body, and are arranged along the extension direction of the extension and form two bosses on the extension.

[0029] The utility model discloses the beneficial effects of the following:

[0030] The handle locking structure is in the locking state when the utility model discloses the trolley is used normally, when needing to store the trolley, the unlocking block is linked with the push rod to drive the unlocking block to move when the push rod rotates relative to the frame, and the unlocking block drives the handle locking structure to be unlocked through the linkage structure, and the handle part can be close to the push rod at this time and be folded, so that the height of the push handle mechanism is reduced, and the trolley is conveniently stored. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 Is the schematic diagram of the rotation base of the trolley provided by the utility model embodiment when being positive;

[0032] Figure 2 Is Figure 1 The schematic diagram of another view of the trolley provided by the utility model embodiment when being positive;

[0033] Figure 3 Is the schematic diagram of the rotation base of the trolley provided by the utility model embodiment when being reverse.

[0034] Figure 4 is another perspective view of the schematic diagram of the embodiment of the present application; Figure 3

[0035] Figure 5 is a schematic diagram of the embodiment of the present application, wherein the push handle mechanism is arranged on the rotating seat;

[0036] Figure 6 is a schematic diagram of the embodiment of the present application, wherein the rotating locking member and the unlocking block are both arranged in the mounting shell;

[0037] Figure 7 is an exploded structural schematic diagram of the embodiment of the present application; Figure 6

[0038] Figure 8 is a schematic diagram of the embodiment of the present application, wherein the handle unlocking structure and the rotating unlocking structure are both arranged in the push handle mechanism;

[0039] Figure 9 is a partial structural enlarged view of the embodiment of the present application; Figure 8

[0040] Figure 10 is a top view of the embodiment of the present application;

[0041] Figure 11 is an enlarged view of A in the embodiment of the present application; Figure 10

[0042] Figure 12 is a schematic diagram of the embodiment of the present application, wherein the rotating locking structure locks the frame body and the rotating seat;

[0043] Figure 13 is an enlarged view of B in the embodiment of the present application; Figure 12

[0044] Figure 14 is a schematic diagram of the embodiment of the present application, wherein the rotating locking structure unlocks the frame body and the rotating seat;

[0045] Figure 15 is an enlarged view of C in the embodiment of the present application; Figure 14

[0046] Figure 16 is a schematic diagram of the embodiment of the present application, wherein the push handle mechanism is in the unfolded state;

[0047] Figure 17 is a schematic diagram of the embodiment of the present application, wherein the push handle mechanism is in the folded state;

[0048] Figure 18 is a schematic diagram of the embodiment of the present application, wherein the handle locking structure is in the locked state;​​​​​​

[0049] Figure 19 is a schematic view of the handle locking structure in the unlocking state provided by the embodiment of the present application;

[0050] Figure 20 is an exploded structural schematic view of the handle locking structure provided by the embodiment of the present application.

[0051] In the figure:

[0052] 1, frame; 11, frame body; 111, rotating lock groove; 12, rotating seat; 13, rotating locking structure; 131, rotating locking piece; 1311, horizontal shaft; 1312, vertical shaft; 132, first reset piece; 133, mounting shell; 1331, guide groove; 14, rotating groove; 2, push handle mechanism; 21, push rod; 22, handle part; 23, handle locking structure; 231, handle locking piece; 2311, first locking tooth; 232, handle locking piece driving piece; 2321, third driving inclined surface; 233, unlocking block; 234, first connecting piece; 2341, guide shaft; 235, second connecting piece; 2351, fourth driving inclined surface; 3, handle unlocking structure; 31, first avoiding groove; 311, folding unlocking guide surface; 312, limiting surface; 4, rotating unlocking structure; 41, second avoiding groove; 411, rotating unlocking guide surface; 42, abutting end surface; 5, seat pocket piece. DETAILED DESCRIPTION

[0053] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, rather than all the structures.

[0054] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature, which can include the first and second features directly contact, or can include the first and second features are not directly contact but contact through another feature between them. Moreover, the first feature "on", "above" and "under" the second feature includes the first feature is directly above and obliquely above the second feature, or only indicates the first feature horizontal height is higher than the second feature. The first feature "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or only indicates the first feature horizontal height is less than the second feature. In the description of the embodiment, the terms "on", "under", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, cannot be understood as a limitation to the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and do not have special meaning.

[0056] Embodiment one

[0057] Referring to Figures 1-20 , the embodiment provides a stroller. Specifically, the stroller is a baby stroller.

[0058] Specifically, referring to Figures 1-9 , Figure 16 and Figure 17 , in the embodiment, the stroller comprises a frame 1, a push handle mechanism 2 and a handle unlocking mechanism.

[0059] Specifically, referring to Figures 1-4 , the push handle mechanism 2 comprises a push rod 21 rotatably installed on the frame 1, a handle part 22 rotatably connected with the push rod 21 and a handle locking structure 23 for locking the handle part 22 relative rotation with the push rod 21. Referring to Figure 6 and Figure 7 , the handle unlocking mechanism comprises an unlocking block 233 movably arranged on the frame 1 and a linkage structure (not shown in the figure) connected between the unlocking block 233 and the handle locking structure 23.

[0060] The unlocking block 233 is linked with the push rod 21 to drive the unlocking block 233 to move when the push rod 21 rotates relative to the frame 1, and the unlocking block 233 drives the handle locking structure 23 to unlock through the linkage structure.

[0061] When the handle locking structure 23 is unlocked, the handle part 22 can be folded towards the push rod 21.

[0062] The handle locking structure 23 is in the locked state during normal use of the stroller. When the stroller needs to be stored, the unlocking block 233 is linked with the push rod 21 to drive the unlocking block 233 to move when the push rod 21 rotates relative to the frame 1. The unlocking block 233 drives the handle locking structure 23 to be unlocked through the linkage structure. At this time, the handle part 22 can be folded towards the push rod 21, so that the height of the push handle mechanism 2 is reduced, and the stroller is conveniently stored.

[0063] Further, in the embodiment, the push rod 21 abuts against the unlocking block 233 and drives the unlocking block 233 to move when the push rod 21 rotates relative to the frame 1.

[0064] The push rod 21 is provided with a folding unlocking guide surface 311 abutting against the unlocking block 233. The unlocking block 233 slides relative to the folding unlocking guide surface 311 with the rotation of the push rod 21.

[0065] Further, the side of the push rod 21 facing the frame 1 is provided with a first avoiding groove 31. The first avoiding groove 31 extends in the rotation direction of the push rod 21 relative to the frame 1. The unlocking block 233 slides in the first avoiding groove 31. The folding unlocking guide surface 311 is arranged on the inner wall of the first avoiding groove 31 and guides the unlocking block 233 to move away from the first avoiding groove 31 when the unlocking block 233 slides relative to the folding unlocking guide surface 311.

[0066] Optionally, the first avoiding groove 31 has two oppositely arranged inner walls in the extension direction thereof. At least one of the two inner walls forms the folding unlocking guide surface 311. Optionally, referring to Figure 9 In the embodiment, one of the two inner walls of the first avoiding groove 31 forms the folding unlocking guide surface 311.

[0067] Of course, in other embodiments, the two inner walls of the first avoiding groove 31 can both form the folding unlocking guide surface 311. In this way, when the push rod rotates in the first direction or in the second direction opposite to the first direction, the unlocking block 233 can drive the handle locking structure 23 to be unlocked through the linkage structure.

[0068] Further, referring to Figures 16-20 In the embodiment, the handle locking structure 23 includes a handle locking piece 231 and a handle locking piece driving piece 232.

[0069] The handle locking piece 231 is movably connected with the push rod 21 and the handle part 22.

[0070] The handle locking member driving member 232 is movably connected with the push rod 21 and the handle part 22, and cooperates with the handle locking member 231 and can drive the handle locking member 231 to move from the handle locking member locking position to the handle locking member unlocking position, in the handle locking member locking position, the push rod 21 and the handle part 22 are locked; in the handle locking member unlocking position, the handle part 22 can be folded towards the push rod 21.

[0071] The linkage structure is a traction cable, one end of the traction cable is connected with the unlocking block 233, the other end is connected with the handle locking member driving member 232, the unlocking block 233 can move relative to the frame 1 and drive the handle locking member driving member 232 to move through the traction cable, and then the handle locking member driving member 232 drives the handle locking member 231 to move from the locking position to the unlocking position.

[0072] Optionally, in the embodiment, a push rod rotation unlocking control part is arranged between the push rod 21 and the frame 1, and operation of the push rod rotation unlocking control part can lock or unlock the push rod 21 relative to the frame 1.

[0073] That is, in the embodiment, after the handle locking member 231 moves from the locking position to the unlocking position, the push rod rotation unlocking control part is controlled again, and then the push rod 21 can rotate relative to the frame 1.

[0074] Optionally, the push rod rotation unlocking control part can be a press unlocking structure, and the press unlocking structure can be similar to the press structure of a press ball pen, and the push rod 21 can rotate relative to the frame 1 after being pressed down; when the push rod rotation unlocking control part is released, the push rod 21 cannot rotate.

[0075] Specifically, referring to Figure 1 , the frame 1 includes a frame body 11, a rotating seat 12 rotatably installed on the top of the frame body 11, and a rotation locking structure 13 for locking the relative position relationship between the rotating seat 12 and the frame body 11. The stroller also has a seat pocket 5 arranged on the rotating seat 12.

[0076] The push rod 21 is rotatably installed on the rotating seat 12, and the stroller also has a rotation unlocking structure 4, and the rotation locking structure 13 cooperates with the push rod 21 to unlock the rotation locking structure 13 when the push rod 21 rotates. Further, the rotation unlocking structure 4 is engaged with the push rod 21 to unlock the rotation locking structure 13 when the push handle mechanism 2 rotates.

[0077] Specifically, in the embodiment, the rotation locking structure 13 includes a rotation locking member 131 movably arranged on the rotating seat 12 and a rotation locking groove 111 arranged on the frame body 11, and the rotation locking member 131 moves into the rotation locking groove 111 to realize the rotation locking of the rotating seat 12 and the frame body 11.

[0078] The rotation unlocking structure 4 is arranged on the push rod 21, and when the push rod 21 rotates, the rotation unlocking structure 4 drives the rotation locking piece 131 to move in a direction away from the rotation locking groove 111, so as to realize the relative rotation between the rotating seat 12 and the frame body 11.

[0079] Further, referring to Figure 1 , Figure 10 and Figure 11 , the frame body 11 is provided with a rotating groove 14 which is open upward, and the rotating seat 12 is provided with a rotating disc which is rotatably arranged in the rotating groove 14, and the rotation locking groove 111 is arranged open to the rotating groove 14, and the rotation locking piece 131 moves between the rotation locking groove 111 and the rotating groove 14 in the radial direction of the rotating disc.

[0080] Further, referring to Figure 7 , in the embodiment, the rotation locking piece 131 comprises a horizontal shaft 1311 which cooperates with the rotation unlocking structure 4 and a vertical shaft 1312 which cooperates with the rotation locking groove 111, and the horizontal shaft 1311 and the vertical shaft 1312 are arranged at an angle. Specifically, the cross-sectional shape and size of the rotation locking groove 111 are adapted to the vertical shaft 1312, and the side of the rotation locking groove 111 is open, so as to facilitate the locking or separation of the rotation locking piece 131 and the rotation locking groove 111.

[0081] For example, when the reversing of the seat pocket piece 5 is not needed, referring to Figure 12 and Figure 13 , at this time, the rotation locking piece 131 is locked with the second avoiding groove 41 and the rotation locking groove 111, and the rotating seat 12 cannot rotate relative to the frame body 11. Specifically, at this time, the horizontal shaft 1311 is locked with the second avoiding groove 41, and the vertical shaft 1312 is locked with the rotation locking groove 111.

[0082] For example, when the reversing of the seat pocket piece 5 is needed, referring to Figure 14 and Figure 15 , after the push rod 21 rotates by a first angle in a first direction, the push rod 21 drives the rotation unlocking structure 4 to rotate, and in the process of rotation, the rotation unlocking guide surface 411 drives the horizontal shaft 1311 of the rotation locking piece 131 to move left until it is separated from the second avoiding groove 41, and at this time, the vertical shaft 1312 of the rotation locking piece 131 is also separated from the rotation locking groove 111.

[0083] Specifically, referring to Figure 13 , when the rotation locking piece 131 is locked with the second avoiding groove 41 and the rotation locking groove 111, the free end of the horizontal shaft 1311 is locked in the second avoiding groove 41, and the free end of the horizontal shaft 1311 abuts against the rotation unlocking guide surface 411; the free end of the vertical shaft 1312 is locked in the rotation locking groove 111, and at this time, the first return piece 132 is in a compressed state, and the first return piece 132 can exert a force on the rotation locking piece 131Figure 13 The rightward force shown is the force under which the rotation locking member 131 can be stably locked with the second avoiding groove 41 and the rotation locking groove 111.

[0084] Specifically, when the push rod 21 rotates along the first direction shown, the push rod 21 moves from the first position to the second position, under the driving action of the rotation unlocking guide surface 411, the free end of the horizontal shaft 1311 gradually disengages from the second avoiding groove 41 and finally abuts against the abutting end surface 42 of the rotation unlocking structure 4, at the same time, the vertical shaft 1312 also moves along the left side shown and disengages from the second avoiding groove 41, and finally the rotation locking member 131 moves to the position shown, at this time, the rotation locking member 131 is unlocked with the second avoiding groove 41 and the rotation locking groove 111; the first return member 132 is further compressed, which can exert the rightward force shown on the vertical shaft 1312 of the rotation locking member 131. Figure 9 Figure 15 Figure 15 Figure 15

[0085] When it is needed to switch the rotation locking member 131 to the locking position again, rotate the push rod 21 along the second direction opposite to the first direction, the push rod 21 moves from the second position to the first position, when the free end of the horizontal shaft 1311 rotates to disengage from the abutting end surface 42 and is opposite to the second avoiding groove 41, under the elastic force of the first return member 132, the free end of the horizontal shaft 1311 will enter into the second avoiding groove 41 again, with the push rod 21 continuing to rotate along the second direction, the free end of the horizontal shaft 1311 gradually enters into the second avoiding groove 41 along the rotation unlocking guide surface 411, and finally switches to the locking position.

[0086] Optionally, in the embodiment, the first direction is the direction of rotating the push rod 21 forward.

[0087] Further, the rotation unlocking structure 4 includes the rotation unlocking guide surface 411 arranged on the side of the push rod 21 facing the rotation seat 12, the rotation unlocking guide surface 411 abuts against the rotation locking member 131 to push the rotation locking member 131 to move in the direction of disengaging from the rotation locking groove 111 when the push rod 21 and the frame body 11 rotate. The rotation unlocking guide surface 411 is overall a slope and generates relative sliding with the rotation locking member 131 when the push rod 21 rotates.

[0088] Specifically, referring to Figure 9 In the embodiment, the rotation unlocking guide surface 411 and the folding unlocking guide surface 311 are both arranged on the extension of the push rod 21 facing the vehicle frame 1, and are arranged along the extension direction of the extension and form two bosses on the extension.

[0089] ​​​​Specifically, one of the two bosses is the handle unlocking structure 3, and the other is the rotation unlocking structure 4. The handle unlocking structure 3 is located at the free end, and the rotation unlocking structure 4 is located between the handle unlocking structure 3 and the push rod 21.

[0090] Specifically, in this embodiment, after the push rod 21 rotates by a first angle in the first direction, the push rod 21 drives the rotation unlocking structure 4 to move to unlock the rotation locking structure 13. After the push rod 21 rotates by a second angle in the first direction, the push rod 21 drives the handle unlocking structure 3 to move to unlock the handle locking structure 23. The second angle is greater than the first angle.

[0091] Specifically, the first direction is Figure 8 and Figure 9 the first direction shown in the figure. Further specifically, the first direction is the clockwise direction of the rotation.

[0092] In use, the seat pocket 5 is arranged on the rotating seat 12, and the child sits on the seat pocket 5.

[0093] When the seat pocket 5 does not need to be reversed, the rotation locking structure 13 can lock the rotating seat 12 and the frame 11. When the seat pocket 5 needs to be reversed, after the push rod 21 rotates by a first angle in the first direction, the push rod 21 drives the rotation unlocking structure 4 to move to unlock the rotation locking structure 13, and then the rotating seat 12 can be rotated. That is, when the seat pocket 5 needs to be reversed, the seat pocket 5 does not need to be disassembled, and the operation is convenient.

[0094] Meanwhile, when the push handle mechanism 2 does not need to be folded, the handle locking structure 23 can lock the positional relationship between the handle part 22 and the push rod 21. When the push handle mechanism 2 needs to be folded, after the push rod 21 rotates by a second angle in the first direction, the push rod 21 drives the handle unlocking structure 3 to move to unlock the handle locking structure 23, and then the handle part 22 can be folded towards the push rod 21 to reduce the occupied space of the stroller.

[0095] and the second angle is greater than the first angle. In this way, the safety hazard caused by triggering the handle locking structure 23 when unlocking the rotation locking structure 13 is avoided.

[0096] Specifically, the rotation unlocking structure 4 is provided with a second avoiding groove 41 matched with the rotation locking structure 13, and the handle unlocking structure 3 is provided with a first avoiding groove 31 matched with the handle locking structure 23. After the second avoiding groove 41 rotates with the push rod 21 by a first angle in the first direction, the rotation locking structure 13 is unlocked by the second avoiding groove 41. After the first avoiding groove 31 rotates with the push rod 21 by a second angle in the first direction, the handle locking structure 23 is unlocked by the first avoiding groove 31.

[0097] Specifically, refer to Figure 9In the embodiment, the rotation unlocking structure 4 and the handle unlocking structure 3 are coaxially arranged on the rotation axis of the push rod 21. Figure 9 As an example, the upper side surface of the second avoiding groove 41 does not exceed the upper side surface of the first avoiding groove 31, and the lower side surface of the second avoiding groove 41 does not exceed the lower side surface of the first avoiding groove 31.

[0098] Specifically, in the embodiment, the rotation unlocking guide surface 411 is arranged in the second avoiding groove 41. The rotation unlocking guide surface 411 can drive the rotation locking piece 131 to be separated from the second avoiding groove 41, so that the rotation locking piece 131 is separated from the frame body 11.

[0099] Further, in order to realize the automatic reset of the rotation locking piece 131, the rotation locking structure 13 further comprises a first reset piece 132 arranged on the rotation seat 12. When the rotation locking piece 131 is connected with the rotation unlocking structure 4, one end of the first reset piece 132 elastically abuts against the frame body 11, and the other end elastically abuts against the rotation locking piece 131. When the rotation locking piece 131 is separated from the rotation unlocking structure 4, the first reset piece 132 is compressed and accumulates elastic potential energy.

[0100] Specifically, in the embodiment, the first avoiding groove 31 is arranged on the handle unlocking structure 3, and the folding unlocking guide surface 311 is arranged in the first avoiding groove 31. The folding unlocking guide surface 311 can drive the unlocking block 233 to be separated from the first avoiding groove 31, so that the unlocking block 233 moves relative to the frame body 11 and drives the handle locking piece driving piece 232 to move through the linkage structure.

[0101] Specifically, referring to Figure 9 , one inner side surface of the first avoiding groove 31 is the folding unlocking guide surface 311, and the other inner side surface is the limiting surface 312. In the initial state, the unlocking block 233 abuts against the limiting surface 312. After the push rod 21 is rotated by the second angle in the first direction, the folding unlocking guide surface 311 drives the unlocking block 233 to be separated from the first avoiding groove 31.

[0102] Further, in order to realize the automatic reset of the unlocking block 233, the handle locking structure 23 further comprises a second reset piece. One end of the second reset piece elastically abuts against the frame body 11, and the other end elastically abuts against the unlocking block 233. When the unlocking block 233 moves to be separated from the first avoiding groove 31, the second reset piece is compressed by the unlocking block 233.

[0103] The folding unlocking guide surface 311 can drive the unlocking block 233 to be separated from the first avoiding groove 31, so that the unlocking block 233 moves relative to the frame body 11 and drives the handle locking piece driving piece 232 to move through the linkage structure.

[0104] Specifically, referring to Figure 9, one inner side of the first avoiding groove 31 is a folding unlocking guide surface 311, and the other inner side is a limiting surface 312. In the initial state, the unlocking block 233 abuts against the limiting surface 312. When the push rod 21 is rotated by a second angle in the first direction, the folding unlocking guide surface 311 drives the unlocking block 233 to disengage from the first avoiding groove 31.

[0105] Further, in order to realize the automatic reset of the unlocking block 233, the handle locking structure 23 further comprises a second reset member, one end of the second reset member elastically abuts against the frame body 11, and the other end elastically abuts against the unlocking block 233. When the unlocking block 233 moves to disengage from the first avoiding groove 31, the second reset member is compressed by the unlocking block 233.

[0106] Further, in order to facilitate the assembly of the stroller, in the embodiment, the stroller further comprises a mounting shell 133, the mounting shell 133 is provided with a guide groove 1331, and the rotating locking member 131 is slidably arranged in the guide groove 1331; at the same time, the handle locking member 231 is also slidably arranged in the guide groove 1331. It can be understood that the guide groove 1331 is provided with a partition plate to separate the rotating locking member 131 and the handle locking member 231 to avoid interference between them. The mounting shell 133 is fixedly installed on the lower surface of the rotating seat 12. The first reset member 132 and the second reset member are also arranged in the guide groove 1331. Further, in the embodiment, the first reset member 132 and the second reset member are both compression springs.

[0107] Exemplarily, in the embodiment, in the process of switching the push handle mechanism 2 from the unfolded state to the folded state, the actuation processes of the handle unlocking structure 3 and the handle locking structure 23 are as follows:

[0108] The push rod 21 is rotated in the first direction to rotate the handle unlocking structure 3 from the first position to the third position (the second position is between the first position and the third position); in this process, the handle locking member 231 is switched from the state of abutting against the limiting surface 312 to the state of abutting against the folding unlocking guide surface 311;

[0109] The push rod 21 continues to rotate in the first direction, and under the driving action of the folding unlocking guide surface 311, the unlocking block 233 is retracted relative to the guide groove 1331. In the retraction process, the unlocking block 233 pulls the handle locking piece driving piece 232 to rotate around the guide shaft 2341 through the linkage structure. In the process of rotating the handle locking piece driving piece 232 around the guide shaft 2341, under the cooperation of the third driving slope 2321 and the fourth driving slope 2351, the handle locking piece driving piece 232 pushes the handle locking piece 231 along the axis of the guide shaft 2341, so that the first locking tooth 2311 is separated from the third locking tooth and remains locked with the second locking tooth. At this time, the handle locking piece 231 moves to the unlocking position, and the first connecting piece 234 and the second connecting piece 235 can rotate relative to each other, so that the push rod 21 and the handle part 22 can be folded relative to each other.

[0110] Exemplarily, in the embodiment, in the process of switching the push handle mechanism 2 from the folded state to the unfolded state, the operation process of the handle unlocking structure 3 and the handle locking structure 23 is as follows:

[0111] The handle part 22 rotates relative to the push rod 21 to open the handle part 22 relative to the push rod 21. Under the elastic restoring force of the third reset piece, the handle locking piece 231 gradually pushes the handle locking piece driving piece 232 along the guide shaft 2341 towards the second connecting piece 235. In this process, the third driving slope 2321 gradually rotates to the state of again abutting with the fourth driving slope 2351, until the handle locking piece 231 switches from the unlocking position to the locking position.

[0112] In the process of switching the handle locking piece 231 from the unlocking position to the locking position, the handle locking piece driving piece 232 moves along the guide shaft 2341 towards the second connecting piece 235. At the same time, the traction cable switches from the original tension state to the relaxed state. Under the elastic restoring force of the second reset piece, the unlocking block 233 gradually enters the first avoiding groove 31 along the folding unlocking guide surface 311. When the unlocking block 233 completely enters the first avoiding groove 31, the traction cable switches from the relaxed state to the tension state again.

[0113] Exemplarily, taking a child stroller as an example, referring to Figures 1-4 The operation of the child product when turning the seat pocket piece 5 is as follows:

[0114] Rotate the push handle mechanism 2 forward by a first angle, so that the push rod 21 drives the rotation unlocking structure 4 to rotate from the first position to the second position, and the rotation locking piece 131 switches from the locking position to the unlocking position;

[0115] Rotate the push handle mechanism 2 to change the orientation of the rotating seat 12, thereby changing the orientation of the seat pocket piece 5;

[0116] Reverse rotating the push handle mechanism 2 by a first angle, so that the rotation unlocking structure 4 is switched from the second position to the first position, the rotation locking piece 131 is switched from the unlocking position to the locking position, and the rotation seat 12 is locked relative to the frame body 11; at this time, the child product is switched from the state shown in Figure 1 and Figure 2 to the state shown in Figure 3 and Figure 4 .

[0117] Exemplarily, taking a child stroller as an example, referring to Figure 16 and Figure 17 , the operation of switching the push handle mechanism 2 from the unfolded state to the folded state is as follows:

[0118] Rotating the push handle mechanism 2 forward by a second angle (the second angle is greater than the first angle, and after the rotation is completed, the push handle mechanism 2 is substantially horizontal), so that the push rod 21 drives the handle unlocking structure 3 to switch from the locking position to the unlocking position;

[0119] Folding the handle part 22 of the push handle mechanism 2 backward, and the push handle mechanism 2 presents the folded state shown in Figure 17 .

[0120] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the utility model. Here, it is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A trolley, characterized in that, include: Frame; The push handle mechanism includes a push rod rotatably mounted on the frame, a handle portion rotatably connected to the push rod, and a handle locking structure for locking the handle portion relative to the push rod. The handlebar unlocking mechanism includes an unlocking block movable on the frame and a linkage structure connecting the unlocking block and the handlebar locking structure. The unlocking block is linked to the push rod so that the unlocking block moves when the push rod rotates relative to the frame, and the unlocking block unlocks the handlebar locking structure through the linkage structure.

2. The trolley according to claim 1, characterized in that, The push rod abuts against the unlocking block and drives the unlocking block to move when the push rod rotates relative to the frame; The push rod is provided with a folded unlocking guide surface that abuts against the unlocking block. As the push rod rotates, the unlocking block slides relative to the folded unlocking guide surface.

3. The trolley according to claim 2, characterized in that, The push rod is provided with a first clearance groove on the side facing the frame. The first clearance groove extends along the rotation direction of the push rod relative to the frame. The unlocking block slides in the first clearance groove. The folding unlocking guide surface is provided on the inner wall of the first clearance groove and guides the unlocking block to move in the direction of disengaging from the first clearance groove when sliding relative to the unlocking block.

4. The trolley according to claim 3, characterized in that, The first clearance groove has two opposing inner walls along its extension direction, at least one of which forms the folding unlocking guide surface.

5. The trolley according to claim 1, characterized in that, The handle locking structure includes: The handle locking component is movably connected to both the push rod and the handle portion; A handle locking member drive is movably connected to both the push rod and the handle portion. The handle locking member drive cooperates with the handle locking member and can drive the handle locking member from the locked position to the unlocked position. In the locked position, the push rod and the handle portion are locked. In the unlocked position, the handle portion can be folded towards the push rod. The linkage structure is a traction cable. One end of the traction cable is connected to the unlocking block, and the other end is connected to the handlebar locking member drive. The unlocking block can move relative to the frame and drive the handlebar locking member drive through the traction cable, thereby causing the handlebar locking member drive to move from the handlebar locking member locked position to the handlebar locking member unlocked position.

6. The trolley according to claim 1, characterized in that, A push rod rotation unlocking control unit is provided between the push rod and the vehicle frame. By operating the push rod rotation unlocking control unit, the push rod can be locked or unlocked relative to the vehicle frame.

7. The trolley according to claim 2, characterized in that, The frame includes a frame body and a rotating seat rotatably mounted on top of the frame body, and a rotation locking structure for locking the relative positional relationship between the rotating seat and the frame body; the trolley also has a seat pocket disposed on the rotating seat; The push rod is rotatably mounted on the rotating seat, and the trolley also has a rotation unlocking structure. The rotation locking structure cooperates with the push rod to unlock the rotation locking structure when the push rod rotates.

8. The trolley according to claim 7, characterized in that, The rotation locking structure includes a rotation locking member movably disposed on the rotation seat and a rotation locking groove disposed on the frame. When the rotation locking member moves to the rotation locking groove, the rotation locking between the rotation seat and the frame is achieved. The rotary unlocking structure is disposed on the push rod, and when it rotates with the push rod, the rotary unlocking structure drives the rotary locking member to move in the direction of disengaging from the rotary locking groove, so as to realize the relative rotation between the rotary seat and the frame.

9. The trolley according to claim 8, characterized in that, The top of the frame is provided with an upward-opening rotating groove, the rotating seat has a rotating disk rotatably installed in the rotating groove, the rotating locking groove is provided facing the opening of the rotating groove, and the rotating locking member moves between the rotating locking groove and the rotating groove along the radial direction of the rotating disk.

10. The trolley according to claim 9, characterized in that, The rotary unlocking structure includes a rotary unlocking guide surface disposed on the side of the push rod facing the rotary seat. The rotary unlocking guide surface abuts against the rotary locking member to push the rotary locking member to move in the direction of disengaging from the rotary lock groove when the push rod rotates with the frame. The rotating unlocking guide surface is generally inclined and slides relative to the rotating locking component when it rotates with the push rod. Both the rotation unlocking guide surface and the folding unlocking guide surface are disposed on the extension of the push rod toward the frame, and are arranged along the extension direction of the extension, forming two protrusions on the extension.

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