Trolley

Abstract

The utility model relates to the technical field of children products, and discloses a stroller which comprises a frame, a first locking piece, a second locking piece and a transmission mechanism, the frame comprises a push rod and a support, the push rod comprises a push handle and a push rod body which can be relatively unfolded and folded, the frame has an unfolded state and a folded state, in the folded state, the push handle is close to the push rod body, and in the folded state, the push handle is close to the push rod body. The push rod body approaches to the support. The first locking piece is movably arranged on the push rod and provided with an unlocking position and a locking position, and the second locking piece is arranged on the support. The transmission mechanism is in transmission connection with the push rod and the first locking piece, when the frame is switched from the folded state to the unfolded state, the push handle can drive the first locking piece to move to the unlocking position, the first locking piece is separated from the second locking piece, and therefore the push rod body can move in the direction away from the support. In the unfolding process of the frame, the push handle drives the first locking piece to be automatically separated from the second locking piece, manual unlocking operation is not needed, the frame unfolding operation is convenient, and the use experience feeling is good.

Description

TECHNICAL FIELD

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

[0002] Children's push car is the necessary tool of baby family, can alleviate the user's baby burden, also can provide comfortable ride environment for children.

[0003] The existing children's push car mostly can be folded and stored, and it is convenient to carry outside, and part children's push car is designed with locking structure in order to prevent the frame from unfolding after folding, for example, the frame is fixed through the hook, so that the frame is kept in the folded state, but the hook needs to be unlocked manually when unfolding the frame, and the operation is cumbersome and inconvenient to use.

[0004] Therefore, a push car is needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] Based on the above problems, the purpose of the utility model is to provide a push car which can be automatically unlocked when unfolding the frame, without manual unlocking operation, and the use experience is good.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A push car is provided, which comprises:

[0008] The frame comprises a push rod and a support, the push rod comprises a push handle and a push rod body which can be unfolded and folded relatively, the frame has an unfolded state and a folded state, in the folded state, the push handle is close to the push rod body, and the push rod body is close to the support;

[0009] The first locking piece is movably arranged on the push rod and has a locking position and an unlocking position;

[0010] The second locking piece is arranged on the support;

[0011] The transmission mechanism is in transmission connection with the push rod and the first locking piece, when the frame is switched from the folded state to the unfolded state, the push handle can drive the first locking piece to move to the unlocking position, the first locking piece is separated from the second locking piece, so that the push rod body can move away from the support.

[0012] As an optional scheme of the push car of the utility model, the transmission mechanism comprises a moving seat, the moving seat is movably arranged on the push rod along a preset direction, the first locking piece is in transmission connection with the moving seat, when the push handle is unfolded relative to the push rod body, the moving seat moves relative to the push rod and drives the first locking piece to move to the unlocking position, so that the first locking piece is separated from the second locking piece.

[0013] The transmission mechanism comprises an elastic component arranged between the moving seat and the push rod, or arranged between the moving seat and the first locking member; when the first locking member is in the locking position, the elastic component is in a compressed energy storage state, and when the push handle is unfolded relative to the push rod body, the elastic component releases elastic potential energy to drive the moving seat to drive the first locking member to move towards the unlocking position.

[0014] As an optional scheme of the utility model's cart, the first locking member is rotationally arranged on the push rod;

[0015] The transmission mechanism further comprises a swing member rotationally connected to the push rod body, the first locking member is fixedly connected to the swing member, the swing member is provided with a first matching part, the moving seat is provided with a second matching part, and when the moving seat moves relative to the push rod body, the first matching part cooperates with the second matching part to drive the swing member to drive the first locking member to rotate towards the unlocking position;

[0016] And / or,

[0017] The push rod body has a containing cavity, the containing cavity is provided with a fixed seat, the moving seat is slidingly arranged in the fixed seat and located in the containing cavity;

[0018] The elastic component comprises a first elastic member arranged between the moving seat and the fixed seat, and when the push handle is unfolded relative to the push rod body, the first elastic member drives the moving seat to drive the first locking member to move towards the unlocking position;

[0019] And / or,

[0020] The transmission mechanism further comprises a traction cable, the push handle is rotationally connected to the push rod body, the push handle and the push rod body are provided with a traction part at the rotational connection position, one end of the traction cable is connected to the traction part, and the other end is connected to the moving seat, when the push handle is folded relative to the push rod body, the traction part tensions the traction cable to drive the moving seat to move and drive the first locking member to move towards the locking position.

[0021] As an optional scheme of the utility model's cart, the first matching part comprises a guide groove arranged on the swing member, the extension direction of the guide groove is arranged at an angle with the moving direction of the moving seat, the second matching part comprises a driving column arranged on the moving seat, the driving column is arranged in the guide groove and slidingly cooperates with the guide groove, and when the moving seat moves, the driving column can abut against the groove wall of the guide groove to drive the swing member to rotate and drive the first locking member to rotate.

[0022] And / or, the swing member is rotatably connected to the push rod rod body through a rotating shaft, a connecting shaft coaxial with the rotating shaft is arranged on the swing member, the first locking member is provided with a insertion hole, the connecting shaft is inserted into the insertion hole, and the first locking member is circumferentially limited on the swing member.

[0023] And / or, a second elastic member is arranged between the first locking member and the push rod rod body, and the second elastic member has a tendency to drive the first locking member to rotate towards the locking position.

[0024] And / or, a buffer pad is arranged between the swing member and the push rod rod body.

[0025] As an optional scheme of the trolley of the utility model, an axial hole extending along an axial direction is formed on the connecting shaft, and the rotating shaft is inserted into and rotatably connected with the axial hole.

[0026] And / or, one of the first locking member and the swing member is provided with a first limiting protrusion spaced from the connecting shaft, and the other is provided with a first limiting groove, and the first limiting protrusion is inserted into the first limiting groove.

[0027] As an optional scheme of the trolley of the utility model, a sliding space is arranged on the fixed seat, and the moving seat is slidably arranged in the sliding space.

[0028] One of the moving seat and the fixed seat is provided with a first guide groove, and the other is provided with a first guide protrusion, and the first guide protrusion and the first guide groove are slidably connected in the moving direction of the moving seat; and / or,

[0029] One of the moving seat and the fixed seat is provided with a second guide groove, and the other is provided with a second guide protrusion, and the second guide protrusion and the second guide groove are slidably connected; and / or,

[0030] The moving seat is provided with a second limiting groove, and the fixed seat is provided with a second limiting protrusion in the sliding space, one end of the first elastic member is sleeved on the second limiting protrusion, and the other end is inserted into the second limiting groove.

[0031] As an optional scheme of the trolley of the utility model, the first locking member is slidably arranged on the push rod.

[0032] The transmission mechanism further comprises a mounting seat, the first locking member is fixedly arranged on the mounting seat, the mounting seat is slidably arranged on the moving seat, and the elastic member comprises a third elastic member arranged between the mounting seat and the moving seat.

[0033] When the handle is unfolded relative to the push rod, the third elastic member drives the moving seat to drive the mounting seat to move relative to the push rod, so that the first locking member is separated from the second locking member; and / or when the handle is folded relative to the push rod, the moving seat drives the mounting seat to move relative to the push rod by extruding the third elastic member, so that the first locking member moves towards the locking position.

[0034] As an optional scheme of the utility model's cart, the push rod has a containing cavity, and the moving seat and the mounting seat are located in the containing cavity.

[0035] The first locking member comprises a hook, the second locking member comprises a hanging column arranged on the support, one end of the hook is provided with a sliding sleeve, the sliding sleeve is slidably arranged outside the push rod, the sliding sleeve is fixedly connected with the mounting seat, and the other end of the hook can be hooked on the hanging column; or,

[0036] The first locking member comprises a hanging column, the second locking member comprises a hook arranged on the support, one end of the hanging column is fixedly connected with the mounting seat, the other end of the hanging column protrudes out of the containing cavity and can be movably clamped into a hook groove of the hook.

[0037] And / or,

[0038] The moving seat is provided with a sliding groove, the mounting seat is at least partially located in the sliding groove and slidably matched with the sliding groove, the third elastic member is located in the sliding groove, one end of the third elastic member abuts against a groove wall of the sliding groove, and the other end abuts against the mounting seat.

[0039] And / or,

[0040] The moving seat is provided with a first positioning protrusion, the mounting seat is provided with a second positioning protrusion, one end of the third elastic member is sleeved on the first positioning protrusion, and the other end is sleeved on the second positioning protrusion.

[0041] As an optional scheme of the utility model's cart, when the first locking member is a hook and the second locking member is a hanging column, the push rod is provided with a second sliding hole communicating with the containing cavity, the sliding sleeve is fixedly connected with the mounting seat through a fastener, and the fastener is slidably arranged in the second sliding hole.

[0042] When the first locking member is a hanging column and the second locking member is a hook, the push rod is provided with a third sliding hole communicating with the containing cavity, and the hanging column is arranged in the third sliding hole and slidably matched with the third sliding hole.

[0043] As an optional scheme of the utility model, the support comprises a front support and a rear support capable of being relatively close and spread, the push rod rod body is provided with the first locking piece, and the front support or the rear support is provided with the second locking piece.

[0044] The utility model discloses beneficial effect is:

[0045] The utility model provides a cart, and when the frame is in the folding state, the first locking piece is in the locking position, the first locking piece is engaged with the second locking piece, so that the frame is kept in the folding state.

[0046] Because the push handle can drive the first locking piece to automatically disengage from the second locking piece during the frame spreading process, automatic unlocking is realized when the frame is spread, and it is not necessary to manually unlock the push rod and the support, so that the operation steps when the frame is spread are simplified, the operation convenience of the frame spreading is improved, the use experience of the user is improved, especially for the user who needs to hold a child with one hand, the frame can be spread by one hand, and time and effort are saved. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed to be used in the embodiment of the utility model will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiment of the utility model and these drawings by those skilled in the art without creating labor.

[0048] Figure 1 It is the structure schematic diagram of the cart provided by the embodiment one of the utility model;

[0049] Figure 2 It is the first folding process schematic diagram of the cart provided by the embodiment one of the utility model;

[0050] Figure 3 It is the second folding process schematic diagram of the cart provided by the embodiment one of the utility model;

[0051] Figure 4 It is the first schematic diagram of the cart after folding provided by the embodiment one of the utility model;

[0052] Figure 5 It is the second schematic diagram of the cart after folding provided by the embodiment one of the utility model;

[0053] Figure 6 is a schematic view of the first locking member in the unlocked position provided by the embodiment one of the utility model;

[0054] Figure 7 is a first structure schematic view of the first locking member and the transmission mechanism (the first locking member is in the unlocked position) provided by the embodiment one of the utility model;

[0055] Figure 8 is a schematic view of the first locking member in the locked position provided by the embodiment one of the utility model;

[0056] Figure 9 is a second structure schematic view of the first locking member and the transmission mechanism (the first locking member is in the locked position) provided by the embodiment one of the utility model;

[0057] Figure 10 is an exploded schematic view of the first locking member and the transmission mechanism provided by the embodiment one of the utility model;

[0058] Figure 11 is a cross section schematic view of the first locking member and the transmission mechanism provided by the embodiment one of the utility model;

[0059] Figure 12 is an exploded schematic view of the handle and the handle rod body rotating connection provided by the embodiment of the utility model;

[0060] Figure 13 is a structure schematic view of the frame in the unfolded state provided by the embodiment two of the utility model;

[0061] Figure 14 is a folding process schematic view of the stroller provided by the embodiment two of the utility model;

[0062] Figure 15 is a structure schematic view of the frame in the folded state provided by the embodiment two of the utility model;

[0063] Figure 16 is a cross section schematic view of the first locking member and the transmission mechanism provided by the embodiment two of the utility model;

[0064] Figure 17 is a structure schematic view of the frame in the unfolded state provided by the embodiment three of the utility model;

[0065] Figure 18 is a folding process schematic view of the stroller provided by the embodiment three of the utility model;

[0066] Figure 19 is a structure schematic view of the frame in the folded state provided by the embodiment three of the utility model;

[0067] Figure 20It is the cross section schematic view of the first locking piece and the transmission mechanism provided in embodiment three of the utility model;

[0068] Figure 21 It is Figure 17 The local enlarged view at A in figure.

[0069] In the figure,

[0070] 1, frame;2, first locking piece;3, second locking piece;4, transmission mechanism;5, second elastic piece;6, buffer gasket;

[0071] 11, push rod;12, support;13, fixed seat;

[0072] 111, push handle;112, push rod body;113, traction part;114, locking part;115, unlocking part;121, front support;122, rear support;

[0073] 1111, operation part;1120, accommodating cavity;1121, first sliding hole;1122, second sliding hole;1123, third sliding hole;

[0074] 131, sliding space;132, first guide groove;133, sliding groove;134, second guide protrusion;135, second limiting protrusion;136, wiring groove;137, second fixed hole;138, clamping hole;

[0075] 21, insertion hole;22, accommodating groove;23, barrel portion;

[0076] 24, sliding sleeve;25, fastener;26, limiting portion;

[0077] 41, moving seat;42, swing piece;43, first elastic piece;44, rotating shaft;40, traction cable;

[0078] 411, drive column;412, first guide protrusion;413, extension;414, second guide groove;415, second limiting groove;416, first fixed hole;

[0079] 421, guide groove;422, connecting shaft;4221, shaft hole;423, first limiting protrusion;

[0080] 417, sliding groove;418, first positioning protrusion;419, third fixed hole;

[0081] 45, mounting seat;46, third elastic piece;

[0082] 451, second positioning protrusion;

[0083] 61, mounting protrusion;62, through hole. DETAILED DESCRIPTION

[0084] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the embodiments of the utility model will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0085] In the description of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0086] In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, and can also be detachable connection; it can be mechanical connection, and can also be electrical connection; it can be directly connected, and can also be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0087] Embodiment one

[0088] As shown in Figures 1 to 11 , the embodiment provides a cart, which does not need manual unlocking operation when unfolding the frame 1, and has good use experience. The cart comprises a frame 1, a first locking piece 2, a second locking piece 3 and a transmission mechanism 4.

[0089] Among them, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, the frame 1 comprises a push rod 11 and a support 12, the push rod 11 comprises a push handle 111 and a push rod body 112 which can be relatively unfolded and folded. The frame 1 has an unfolded state and a folded state, in the folded state, the push handle 111 is close to the push rod body 112, and the push rod body 112 is close to the support 12. A first locking piece 2 is movably arranged on the push rod 11 and has an unlocked position and a locked position, and a second locking piece 3 is arranged on the support 12. A transmission mechanism 4 is drivingly connected between the push rod 11 and the first locking piece 2, when the frame 1 is switched from the folded state to the unfolded state, the push handle 111 can drive the first locking piece 2 to move to the unlocked position, and the first locking piece 2 is disengaged from the second locking piece 3, so that the push rod body 112 can move away from the support 12.

[0090] As shown in Figure 4 and Figure 5 , when the frame 1 is in the folded state, the first locking piece 2 is in the locked position, and the first locking piece 2 is engaged with the second locking piece 3, so that the frame 1 is kept in the folded state. As shown in Figure 2 and Figure 3 , when it is needed to unfold the frame 1, the push handle 111 is unfolded relative to the push rod body 112, in this process, the transmission mechanism 4 drives the first locking piece 2 to move from the locked position to the unlocked position, so that the first locking piece 2 is disengaged from the second locking piece 3, the limit between the support 12 and the push rod body 112 is removed, and the push rod body 112 can move away from the support 12, so that the frame 1 can be smoothly unfolded, as shown in Figure 1 .

[0091] Since the push handle 111 can drive the first locking piece 2 to automatically disengage from the second locking piece 3 during the unfolding of the frame 1, automatic unlocking is realized when the frame 1 is unfolded, and manual unlocking operation of the push rod 11 and the support 12 is not needed, so that the operation steps when the frame 1 is unfolded are simplified, the operation convenience of unfolding the frame 1 is improved, and the user experience is improved. Especially for users who need to hold a child with one hand, the frame 1 can be unfolded with one hand, which saves time and effort.

[0092] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the support 12 comprises a front support 121 and a rear support 122 which can be relatively close and unfolded, the rear support 122 is located between the front support 121 and the push rod 11 after the frame 1 is folded, the push rod body 112 is provided with the first locking piece 2, and the front support 121 is provided with the second locking piece 3. After the first locking piece 2 and the second locking piece 3 are locked, the rear support 122 can be limited between the push rod 11 and the front support 121, so that the frame 1 can be stably kept in the folded state.

[0093] Referring to Figure 2 , Figure 3 andFigure 4 The first locking member 2 comprises a hook, and the second locking member 3 comprises a hook column. When the folding handle 111 is folded to the handle bar 112, the hook moves towards the hook column, and the handle bar 11 and the support 12 are folded to lock the frame 1 in the folded state.

[0094] Of course, in other embodiments, the first locking member 2 and the second locking member 3 can both be hook structures, and when the frame 1 is folded, the two hook structures are hooked together to lock the frame 1.

[0095] Optionally, referring to Figure 6 , Figure 7 , Figure 8 and Figure 9 , the transmission mechanism 4 comprises a moving seat 41 movably arranged on the handle bar 11 in a preset direction, and the first locking member 2 is in transmission connection with the moving seat 41. When the handle 111 is unfolded relative to the handle bar 112, the moving seat 41 moves relative to the handle bar 11 and drives the first locking member 2 to move towards the unlocking position, so that the first locking member 2 is separated from the second locking member 3. That is, when the handle 111 is unfolded relative to the handle bar 112, the moving seat 41 is driven to move, and the moving seat 41 drives the first locking member 2 to move towards the unlocking position, so that the unfolding movement of the handle 111 and the handle bar 112 is linked with the movement of the first locking member 2, and the first locking member 2 does not need to be operated separately to be unlocked. In this embodiment, the preset direction is the extension direction of the handle bar 112.

[0096] Optionally, the transmission mechanism 4 comprises an elastic component arranged between the moving seat 41 and the handle bar 11. When the first locking member 2 is in the locking position, the elastic component is in a compressed energy storage state, and when the handle 111 is unfolded relative to the handle bar 112, the elastic component releases the elastic potential energy to drive the moving seat 41 to drive the first locking member 2 to move towards the unlocking position. The arrangement of the elastic component makes the unfolding movement of the handle 111 and the handle bar 112 linked with the movement of the first locking member 2 towards the unlocking position, and the first locking member 2 is automatically separated from the second locking member 3 without manual operation.

[0097] Optionally, referring to Figure 6 , Figure 7 , Figure 8 and Figure 9The first locking member 2 is rotatably arranged on the push rod 11. The transmission mechanism 4 further comprises a swing member 42 rotatably connected to the push rod body 112, the first locking member 2 is fixedly connected to the swing member 42, the swing member 42 is provided with a first matching part, the moving seat 41 is provided with a second matching part, when the moving seat 41 moves relative to the push rod body 112, the first matching part cooperates with the second matching part to drive the swing member 42 to rotate the first locking member 2 to the locking position. In the process of unfolding the push handle 111 and the push rod body 112, the moving seat 41 moves relative to the push rod body 112, and at the same time, the first matching part and the second matching part interact to make the swing member 42 rotate relative to the push rod body 112 by a certain angle, and at the same time, the first locking member 2 rotates with the swing member 42 to the unlocking position, realizing the linkage of the unfolding action of the push handle 111 and the push rod body 112 and the rotating action of the first locking member 2. The first matching part and the second matching part are arranged, so that the linear motion of the moving seat 41 can be converted into the rotating motion of the swing member 42, thereby realizing the rotating switching of the first locking member 2 to the unlocking position.

[0098] Optionally, referring to Figure 6 and Figure 7 , the first matching part comprises a guide groove 421 arranged on the swing member 42, the extension direction of the guide groove 421 is arranged at an angle with the moving direction of the moving seat 41, and the second matching part comprises a driving column 411 arranged on the moving seat 41, the driving column 411 is arranged in the guide groove 421 and is in sliding cooperation with the guide groove 421, when the moving seat 41 moves relative to the push rod body 112, the driving column 411 can push the groove wall of the guide groove 421, so that the swing member 42 drives the first locking member 2 to rotate to the unlocking position.

[0099] As shown in Figure 4 , Figure 8 and Figure 9 , when the vehicle frame 1 is in the folded state, the driving column 411 is located at the upper end of the guide groove 421, and the first locking member 2 is in the locking position. When the moving seat 41 slides downward, as shown in Figure 6 and Figure 7 , the driving column 411 slides downward in the guide groove 421, because the extension direction of the guide groove 421 is at an angle with the moving direction of the moving seat 41, that is, the guide groove 421 is arranged obliquely relative to the moving seat 41, so that the driving column 411 can slide in the guide groove 421 while rotating the swing member 42 by a certain angle by pushing the groove wall of the guide groove 421, thereby driving the first locking member 2 to rotate to the unlocking position. As shown in Figure 7 , when the driving column 411 moves to the lower end of the guide groove 421, the first locking member 2 rotates to the unlocking position. The swing member 42 is driven to rotate by the sliding cooperation of the driving column 411 and the guide groove 421, which is reliable in connection and stable in driving.

[0100] In other embodiments, the first engaging part can also be a guide slope provided on the swing member 42, and the second engaging part can be a protruding structure provided on the moving base 41, which is in sliding engagement with the guide slope, as long as the moving base 41 can be moved while driving the swing member 42 to rotate by a certain angle.

[0101] Optionally, referring to Figure 6 and Figure 11 , the push rod body 112 has a receiving cavity 1120, and the moving base 41 is movably arranged in the receiving cavity 1120. The outer wall of the push rod body 112 is provided with a first sliding hole 1121 which is in communication with the receiving cavity 1120 and extends along the moving direction of the moving base 41. The driving column 411 is arranged in the first sliding hole 1121 and the guide groove 421 and is in sliding engagement with the first sliding hole 1121 and the guide groove 421. The moving base 41 is hidden in the receiving cavity 1120 of the push rod body 112, so that the space of the push rod body 112 can be fully utilized, and the appearance of the push rod body 112 is more neat. The first sliding hole 1121 can limit the moving direction of the driving column 411 and the moving base 41, prevent the moving base 41 from deviating, and ensure that the locking and unlocking processes of the first locking member 2 and the second locking member 3 are smooth. For example, the push rod body 112 has a tubular structure, and the tubular cavity of the push rod body 112 forms the above-mentioned receiving cavity 1120.

[0102] Optionally, referring to Figure 1 and Figure 12 , the transmission mechanism 4 further comprises a traction cable 40. The push handle 111 is rotationally connected with the push rod body 112. The traction cable 40 has one end connected with the traction part 113 and the other end connected with the moving base 41. When the push handle 111 is folded relative to the push rod body 112, the traction part 113 tightens the traction cable 40, so that the traction cable 40 drives the moving base 41 to move and drives the first locking member 2 to move towards the locking position.

[0103] Specifically, when the push handle 111 is folded relative to the push rod body 112, the push handle 111 drives the traction part 113 to rotate, the traction cable 40 is tightened, and then the traction cable drives the moving base 41 to move relative to the push rod body 112, so that the moving base 41 drives the first locking member 2 to move towards the locking position. That is, when the push handle 111 and the push rod body 112 are folded relative to each other, the traction cable can be pulled, so that the traction cable drives the moving base 41 to move, and the moving base 41 drives the first locking member 2 to move towards the locking position, thereby realizing the linkage between the folding movement of the push handle 111 and the push rod body 112 and the movement of the first locking member 2. The first locking member 2 and the second locking member 3 do not need to be operated separately to be locked, the vehicle frame 1 is automatically locked after being folded, the vehicle frame 1 is stably kept in the folded state, and the stroller is convenient to store and carry.

[0104] Referring to Figure 12, the push handle 111 is provided with a first joint seat, the push rod body 112 is provided with a second joint seat, the traction part 113 is rotationally arranged in the second joint seat, the first joint seat and the second joint seat are further provided with a locking part 114 and an unlocking part 115, the locking part 114 is movable along the rotation axis direction of the push handle 111 and the push rod body 112, the unlocking part 115 is movable along the rotation axis and can rotate around the rotation axis, the traction part 113 is protrudingly provided with a plug-in part, the locking part 114 is provided with a plug-in slot, and the plug-in part is plug-in arranged in the plug-in slot. The first joint seat and the second joint seat are both provided with a locking slot, and when the push rod 11 is in the unfolded state, the locking part 114 is simultaneously clamped with the locking slots of the first joint seat and the second joint seat.

[0105] The push handle 111 is provided with an operation part 1111, the operation part 1111 is connected with the unlocking part 115 through a traction rope (not the same as the traction cable, the traction rope is located in the push handle 111), when folding the push handle 111 and the push rod body 112, the operation part 1111 is pressed to make the traction rope pull the unlocking part 115 to rotate, at the same time, the locking part 114 is separated from the locking slot of the second joint seat and is only clamped with the first joint seat, the rotation connection part of the push handle 111 and the push rod body 112 is unlocked, the locking part 114 rotates synchronously with the first joint when rotating and folding the push handle 111, in this process, the locking part 114 pushes the plug-in part through the slot wall of the plug-in slot to drive the traction part 113 to rotate, the traction cable 40 is pulled and tensioned, so as to pull the moving seat 41 to move relative to the push rod body 112 and drive the first locking part 2 to move.

[0106] In the embodiment, as shown in Figure 2 and Figure 3 , the first locking part 2 is located at the lower region of the push rod body 112, which ensures that the first locking part 2 does not hinder the user from normally using the stroller when the frame 1 is in the unfolded state. Further, the push handle 111 and the push rod body 112 are both tubular structures, and the traction cable is located in the pipe cavity of the push handle 111 and the push rod body 112.

[0107] In other embodiments, the first locking part 2 can also be designed on the push handle 111, as long as the first locking part 2 can be locked with the second locking part 3 and does not hinder the normal use of the stroller.

[0108] Optionally, referring to Figure 10 , the moving seat 41 is provided with a first fixing hole 416, the end of the traction cable is provided with a clamping column, and the clamping column is clamped and fixed in the first fixing hole 416 to realize the connection between the traction cable and the moving seat 41.

[0109] Optionally, referring to Figure 9 , Figure 10 and Figure 11, the push rod body 112 has a receiving cavity 1120, a fixed seat 13 is arranged in the receiving cavity 1120, and the moving seat 41 is slidingly arranged in the fixed seat 13 and located in the receiving cavity 1120. The fixed seat 13 provides a mounting basis for the moving seat 41, so that the moving seat 41 can stably slide in the receiving cavity 1120. The fixed seat 13 can be fixed to the push rod body 112 by screws, bolts or other fixing members, as shown in Figure 10 and Figure 11 , the fixed seat 13 is provided with a second fixing hole 137, the push rod body 112 is provided with a through hole communicating with the receiving cavity 1120, and a screw or a bolt is arranged to connect the second fixing hole 137 and the corresponding through hole to fix the fixed seat 13 to the push rod body 112.

[0110] Referring to Figure 7 , Figure 10 and Figure 11 , the elastic component includes a first elastic member 43 arranged between the moving seat 41 and the fixed seat 13. When the push handle 111 is unfolded relative to the push rod body 112, the first elastic member 43 drives the moving seat 41 to move the first locking member 2 towards the unlocking position. Further, when the push handle 111 is folded relative to the push rod body 112, the traction cable is tensioned and moves the moving seat 41, the first elastic member 43 is compressed and deformed, and the first elastic member 43 accumulates elastic potential energy.

[0111] Specifically, during the unfolding of the push handle 111 and the push rod body 112, the traction cable is relaxed, the pulling force on the moving seat 41 is reduced or even removed, the first elastic member 43 releases the elastic potential energy, thereby driving the moving seat 41 to slide reversely relative to the fixed seat 13. At the same time, the driving column 411 on the moving seat 41 is in sliding cooperation with the guide groove 421, the driving column 411 pushes the groove wall of the guide groove 421 to reversely rotate the swing member 42, thereby reversely rotating the first locking member 2 by a certain angle and switching to the unlocking position. At this time, the first locking member 2 is separated from the second locking member 3, the limit between the push rod 11 and the bracket 12 is removed, and the push rod body 112 can move away from the bracket 12, so that the vehicle frame 1 can be smoothly unfolded.

[0112] Referring to Figure 8 , Figure 9 , Figure 10 and Figure 11 , the swing member 42 is rotationally connected to the push rod body 112 through the rotating shaft 44, the swing member 42 is provided with a connecting shaft 422 coaxial with the rotating shaft 44, the first locking member 2 is provided with a insertion hole 21, the connecting shaft 422 is inserted into the insertion hole 21, and the first locking member 2 is circumferentially limited on the swing member 42, so as to ensure that the first locking member 2 and the swing member 42 cannot rotate relative to each other. The first locking member 2 and the swing member 42 rotate around the same axis, which can ensure that the swing member 42 drives the first locking member 2 to rotate synchronously, and the driving efficiency is higher.

[0113] Referring toFigure 9 、 Figure 10 and Figure 11 The connecting shaft 422 is provided with an axial shaft hole 4221, and the rotating shaft 44 is arranged in the shaft hole 4221 and rotationally connected with the shaft hole 4221, so as to rotationally connect the swing piece 42 and the push rod body 112. For example, the rotating shaft 44 can be fixedly connected with the fixing member on the fixing seat 13, so as to fix the rotating shaft 44 on the push rod body 112. For example, a second fixing hole 137 is arranged on the fixing seat 13 at a position corresponding to the rotating shaft 44, and a screw or other fixing member is arranged through the second fixing hole 137 and the push rod body 112 and connected with the rotating shaft 44.

[0114] Optionally, one of the first locking piece 2 and the swing piece 42 is provided with a first limiting protrusion 423 spaced from the connecting shaft 422, and the other is provided with a first limiting slot, and the first limiting protrusion 423 is arranged in the first limiting slot. In this way, the relative rotation between the connecting shaft 422 and the insertion hole 21 can be limited, and the first locking piece 2 and the swing piece 42 can be circumferentially limited, so that they can rotate around the same axis synchronously. In the embodiment, as shown in Figure 10 The swing piece 42 is provided with the first limiting protrusion 423 on a side facing the first limiting piece, and the first locking piece 2 is provided with the first limiting slot (not shown in the figure) on a side facing the swing piece 42.

[0115] In other embodiments, the first limiting slot can be arranged on the swing piece 42, and the first limiting protrusion 423 can be arranged on the first locking piece 2. Alternatively, a circumferential limiting structure can be arranged between the connecting shaft 422 and the insertion hole 21, so as to fix the first locking piece 2 and the swing piece 42 together.

[0116] Optionally, as shown in Figure 7 、 Figure 10 and Figure 11 The fixing seat 13 is provided with a sliding space 131, and the moving seat 41 is slidingly arranged in the sliding space 131. On the one hand, the sliding direction of the moving seat 41 relative to the fixing seat 13 can be limited, and on the other hand, the thickness of the moving seat 41 and the fixing seat 13 can be reduced, so as to fully utilize the space in the accommodating cavity 1120 of the push rod body 112, and the structure layout is reasonable.

[0117] As shown in Figure 10 and Figure 11One of the mobile base 41 and the fixed base 13 is provided with a first guide groove 132, and the other is provided with a first guide protrusion 412 which is in sliding fit with the first guide groove 132 in the moving direction of the mobile base 41. The fit of the first guide protrusion 412 with the first guide groove 132 can limit the sliding direction of the mobile base 41, improving the sliding stability of the mobile base 41. Further, the first guide groove 132 is closed at both ends along its extending direction, which can limit the sliding stroke of the first guide protrusion 412, and further limit the sliding stroke of the mobile base 41 relative to the fixed base 13, ensuring that the first locking member 2 can be accurately switched to the unlocked position or the locked position.

[0118] In the embodiment, the first guide groove 132 is arranged at the bottom of the sliding space 131, and the first guide protrusion 412 is arranged on the mobile base 41.

[0119] Referring to Figure 10 One of the mobile base 41 and the fixed base 13 is provided with a second guide groove 414, and the other is provided with a second guide protrusion 134 which is in sliding fit with the second guide groove 414. The fit of the second guide protrusion 134 with the second guide groove 414 further limits the moving direction of the mobile base 41, ensuring the moving accuracy of the mobile base 41 relative to the fixed base 13.

[0120] In the embodiment, as shown in Figure 10 The fixed base 13 is provided with two sliding grooves 133 which are in communication with the sliding space 131 and are arranged at intervals, and the second guide protrusion 134 is formed between the two sliding grooves 133. The mobile base 41 is provided with two extending portions 413 which are arranged at intervals, and the second guide groove 414 which is closed at one end and open at the other end is formed between the two extending portions 413. When the first elastic member 43 drives the mobile base 41 to slide, the second guide protrusion 134 can be stopped at the closed end of the second guide groove 414, further limiting the moving stroke of the mobile base 41, and ensuring that the first locking member 2 can be stably kept in the unlocked position.

[0121] Optionally, referring to Figure 10 The fixed base 13 is provided with a wire slot 136 which is in communication with the sliding space 131, and the traction cord is led out through the wire slot 136 after being connected with the mobile base 41, ensuring that the traction cord can smoothly pull the mobile base 41.

[0122] Referring to Figure 10 and Figure 11The second limiting groove 415 is arranged on the moving seat 41, the second limiting protrusion 135 is arranged in the sliding space 131 of the fixing seat 13, one end of the first elastic member 43 is sleeved on the second limiting protrusion 135, and the other end is inserted into the second limiting groove 415. The second limiting groove 415 and the second limiting protrusion 135 can limit the extension direction of the first elastic member 43, so that the first elastic member 43 can stably drive the moving seat 41 to move in the preset direction. For example, the first elastic member 43 is a spring.

[0123] Optionally, referring to Figure 10 and Figure 11 , the second elastic member 5 is arranged between the first locking member 2 and the push rod body 112, and the second elastic member 5 has a tendency to drive the first locking member 2 to rotate towards the locking position. That is, the elastic force of the first elastic member 43 is greater than the elastic force of the second elastic member 5, the first elastic member 43 is compressed when the first locking member 2 is in the unlocking position, the second elastic member 5 releases the elastic potential energy, and assists in driving the first locking member 2 to rotate towards the locking position. Under the action of the elastic force of the second elastic member 5, the first locking member 2 can be stably kept in the state of being locked with the second locking member 3.

[0124] Referring to Figure 11 , the accommodating groove 22 is arranged on the first locking member 2, the insertion hole 21 is arranged on the bottom wall of the accommodating groove 22, the barrel portion 23 is arranged on the periphery of the insertion hole 21 in the accommodating groove 22, the second elastic member 5 is located in the accommodating groove 22 and is sleeved outside the barrel portion 23, one end of the second elastic member 5 is connected with the first locking member 2, and the other end is connected with the push rod body 112. When the first locking member 2 rotates around the rotating shaft 44 towards the unlocking position, the second elastic member 5 can be deformed to accumulate potential energy, and a torque is generated on the first locking member 2, so that the first locking member 2 has a tendency to rotate towards the locking position. The arrangement of the accommodating groove 22 can hide the second elastic member 5, so that the overall appearance of the first locking member 2 is beautiful.

[0125] For example, the second elastic member 5 is a torsion spring, one torsion arm of the torsion spring is connected with the push rod body 112, and the other torsion arm is connected with the first locking member 2.

[0126] Optionally, referring to Figure 10 and Figure 11 , the buffer pad 6 is arranged between the swing member 42 and the push rod body 112. The buffer pad 6 can reduce the friction between the swing member 42 and the push rod body 112 during rotation, thereby reducing the rotation resistance of the swing member 42 and improving the rotation smoothness of the swing member 42. At the same time, the buffer pad 6 can prevent noise generated by the friction between the swing member 42 and the push rod body 112. For example, the buffer pad 6 can be a rubber pad, a plastic pad with small friction, etc.

[0127] Referring toFigure 11 The buffer pad 6 is provided with a through hole 62 corresponding to the shaft hole 4221 on the swing member 42, so that the fixing member can pass through the through hole 62 and connect to the rotating shaft 44. Furthermore, the buffer pad 6 is provided with mounting protrusions 61 spaced apart from the through hole 62, the push rod body 112 is provided with a mounting hole, and the fixing seat 13 is provided with a snap-fit ​​hole 138 corresponding to the mounting hole. The mounting protrusions 61 pass through the mounting hole and snap into the snap-fit ​​hole 138 to prevent the buffer pad 6 from moving and ensure that the buffer pad 6 plays a good cushioning role.

[0128] The folding and unfolding process of the cart provided in this embodiment is as follows:

[0129] When folding the frame 1, as Figure 2 and Figure 3 As shown, first operate the push handle 111 and the push rod body 112 to fold and close together. During this process, refer to... Figure 6 and Figure 7 The traction cable pulls the moving seat 41 upward relative to the push rod 112, while the drive column 411 moves the swing member 42, causing the first locking member 2 to rotate from the unlocked position to the locked position. The moving seat 41 compresses the first elastic member 43 to store energy. Figure 4 and Figure 5 As shown, when the push rod 11 approaches the bracket 12, the first locking member 2 locks with the second locking member 3 (the locking hook is hooked to the fixed post) so that the push rod 11 and the bracket 12 remain in the folded and close state.

[0130] When the frame 1 needs to be unfolded, the push handle 111 and the push rod 112 unfold relative to each other. During this process, the traction cable is relaxed, the first elastic element 43 pushes the moving seat 41 to move in the opposite direction, and at the same time the drive column 411 moves the swing element 42 to drive the first locking element 2 to rotate from the locked position to the unlocked position, so that the first locking element 2 disengages from the second locking element 3, the limit between the bracket 12 and the push rod 11 is released, and the frame 1 can be unfolded smoothly.

[0131] Example 2

[0132] This embodiment provides a trolley, which differs from Embodiment 1 in that:

[0133] Optionally, the first locking member 2 is slidably disposed on the push rod 11. The elastic component is disposed between the movable seat 41 and the first locking member 2. When the first locking member 2 is in the locked position, the elastic component is in a compressed and energy-storing state. When the push handle 111 unfolds relative to the push rod body 112, the elastic component releases elastic potential energy to drive the movable seat 41 to move the first locking member 2 toward the unlocked position.

[0134] See Figure 13 , Figure 14 , Figure 15 and Figure 16, the transmission mechanism 4 further comprises a mounting base 45 and a third elastic member 46, the first locking member 2 is fixedly arranged on the mounting base 45, the mounting base 45 is slidingly arranged on the moving base 41 along a preset direction, and the elastic member comprises the third elastic member 46 arranged between the mounting base 45 and the moving base 41. When the handle 111 is unfolded relative to the push rod body 112, the third elastic member 46 can drive the moving base 41 to move the mounting base 45 relative to the push rod 11, so that the first locking member 2 is separated from the second locking member 3.

[0135] Specifically, when unfolding the frame 1, the handle 111 is unfolded relative to the push rod body 112, in this process, the traction cable is relaxed, the pulling force acting on the moving base 41 is reduced or even removed, the third elastic member 46 releases the elastic potential energy, thereby driving the moving base 41 to slide upward relative to the push rod body 112. Since the mounting base 45 is located on the moving base 41, the moving base 41 can drive the mounting base 45 to move upward together, so that the first locking member 2 moves upward together with the mounting base 45 to separate from the second locking member 3, the push rod 11 is unlocked from the support 12, and the frame 1 can be unfolded smoothly. The third elastic member 46 is arranged, so that the unfolding action of the handle 111 relative to the push rod body 112 is linked with the separation action of the first locking member 2 from the second locking member 3, and the push rod 11 is automatically unlocked from the support 12 without manual operation. That is, during the unfolding process of the stroller, the first locking member 2 can automatically separate from the second locking member 3 to achieve automatic unlocking, thereby improving the operation convenience when unfolding the frame 1.

[0136] Further, when the handle 111 is folded relative to the push rod body 112, the moving base 41 drives the mounting base 45 to move relative to the push rod 11 by extruding the third elastic member 46, so that the first locking member 2 moves towards the locking position to engage with the second locking member 3.

[0137] Specifically, during the folding process of the handle 111 relative to the push rod body 112, the traction cable is tensioned, as shown in Figure 16 , the traction cable pulls the moving base 41 to move downward relative to the push rod body 112, and extrudes the third elastic member 46 to produce a certain deformation. While the moving base 41 slides, the third elastic member 46 pushes the mounting base 45 to move downward together with the moving base 41, so that the mounting base 45 drives the first locking member 2 to move downward synchronously, as shown in Figure 14 and Figure 15 , when the push rod 11 and the support 12 are close to each other, the first locking member 2 moves downward to be locked with the second locking member 3, thereby locking the frame 1 in the folded state.

[0138] Optionally, referring to Figure 16 , the third fixing hole 419 is arranged on the moving base 41, and the end of the traction cable is provided with a clamping column which is clamped and fixed in the third fixing hole 419, thereby connecting the traction cable with the moving base 41.

[0139] Optionally, referring toFigure 16 The moving seat 41 is provided with a sliding groove 417, the mounting seat 45 is at least partially located in the sliding groove 417 and is in sliding fit with the sliding groove 417, and the third elastic member 46 is located in the sliding groove 417 and one end of the third elastic member 46 abuts against the groove wall of the sliding groove 417 and the other end abuts against the mounting seat 45. At the moment when the traction cable pulls the moving seat 41 to slide downward, the moving seat 41 slides relative to the mounting seat 45, that is, the mounting seat 45 slides in the sliding groove 417, and the third elastic member 46 is pressed. When the moving seat 41 continues to slide downward, the third elastic member 46 pushes the mounting seat 45 to slide downward together with the moving seat 41, thereby driving the first locking member 2 to move downward relative to the push rod body 112. At the moment when the traction cable is relaxed, the third elastic member 46 releases the elastic potential energy, and under the action of the elastic force of the third elastic member 46, the moving seat 41 slides upward relative to the push rod body 112, and the mounting seat 45 slides in the sliding groove 417. When the mounting seat 45 abuts against the end groove wall of the sliding groove 417, the moving seat 41 drives the mounting seat 45 to move upward synchronously, thereby driving the first locking member 2 to move upward relative to the push rod body 112.

[0140] The sliding arrangement of the mounting seat 45 in the sliding groove 417 can limit the moving direction and the moving stroke of the mounting seat 45, and ensure the smooth locking and unlocking of the first locking member 2 and the second locking member 3. Furthermore, the arrangement of the third elastic member 46 in the sliding groove 417 can limit the extension direction of the third elastic member 46, thereby stably driving the mounting seat 45 to move together with the first locking member 2.

[0141] Continuously referring to Figure 16 The moving seat 41 is provided with a first positioning protrusion 418, the mounting seat 45 is provided with a second positioning protrusion 451, one end of the third elastic member 46 is sleeved on the first positioning protrusion 418, and the other end is sleeved on the second positioning protrusion 451. The first positioning protrusion 418 and the second positioning protrusion 451 can stably install the third elastic member 46 in the sliding groove 417, and further ensure that the third elastic member 46 can only extend in the extension direction of the sliding groove 417, thereby improving the moving stability of the mounting seat 45 and the moving seat 41. Exemplarily, the third elastic member 46 is a spring.

[0142] Optionally, referring to Figure 16 The push rod 11 has a containing cavity 1120, and the moving seat 41 and the mounting seat 45 are located in the containing cavity 1120. The hiding of the moving seat 41 and the mounting seat 45 in the containing cavity 1120 of the push rod 11 can fully utilize the space of the push rod 11 and make the appearance of the push rod 11 more neat. Exemplarily, the push handle 111 and the push rod body 112 are both tubular structures, and the tubular cavity of the push rod body 112 forms the above-mentioned containing cavity 1120.

[0143] Optionally, referring to Figure 13 , Figure 14 ,Figure 15 and Figure 16 The first locking member 2 comprises a hook, and the second locking member 3 comprises a hanging column arranged on the support 12. One end of the hook is provided with a sliding sleeve 24 which is sleeved on the push rod 11 and fixedly connected with the mounting seat 45. The other end of the hook can be hooked on the hanging column. When the push handle 111 is folded or unfolded relative to the push rod body 112, the moving seat 41 drives the mounting seat 45 and the sliding sleeve 24 to slide relative to the push rod body 112, so that the hook is moved to be hooked on the hanging column or separated from the hanging column, thereby realizing the locking or unlocking of the push rod 11 and the support 12.

[0144] In the embodiment, the sliding sleeve 24 and the hook are integrally formed, which is convenient for assembly. In other embodiments, the sliding sleeve 24 and the hook can also be designed in a split type, and the sliding sleeve 24 and the hook are assembled together at a later stage.

[0145] Referring to Figure 13 and Figure 16 The push rod 11 is provided with a second sliding hole 1122 which communicates with the accommodating cavity 1120. The sliding sleeve 24 is fixedly connected with the mounting seat 45 through a fastener 25 which is slidably arranged in the second sliding hole 1122. When the moving seat 41 slides in the accommodating cavity 1120 and drives the mounting seat 45 to move relative to the push rod body 112, the fastener 25 slides in the second sliding hole 1122, so that the first locking member 2 can move a certain distance relative to the push rod body 112. Exemplarily, the second sliding hole 1122 is a strip-shaped hole which can limit the moving direction of the first locking member 2 and the moving stroke of the first locking member 2 relative to the push rod body 112, so as to ensure that the first locking member 2 can be accurately locked and unlocked with the second locking member 3.

[0146] Further, referring to Figure 13 , Figure 14 and Figure 15 Since the push rod 11 is more outward relative to the support 12 after the frame 1 is folded, the hanging column is arranged on the outer side of the support 12, so that the hook can be hooked on the hanging column after the frame 1 is folded. In other embodiments, the arrangement position of the hanging column can be changed according to the relative position relationship between the push rod 11 and the support 12, for example, the hanging column is arranged on the inner side of the support 12.

[0147] Exemplarily, the fastener 25 can be a bolt, a screw or the like. The mounting seat 45 is provided with a threaded hole, and the fastener 25 penetrates through the sliding sleeve 24, the second sliding hole 1122 and is threadedly connected with the threaded hole, so as to fixedly connect the sliding sleeve 24 and the mounting seat 45, and the sliding sleeve 24 can slide relative to the push rod body 112.

[0148] In some other embodiments, the first locking member 2 and the second locking member 3 can also be both in the structure of a clamping hook. When the frame 1 is folded, the two clamping hooks are hooked together to lock the frame 1.

[0149] The folding and unfolding process of the cart provided in this embodiment is as follows:

[0150] When folding the frame 1, as Figure 13 and Figure 14 As shown, first operate the push handle 111 to fold and close relative to the push rod body 112. During this process, refer to... Figure 16 The traction cable pulls the moving seat 41 downward relative to the push rod 112, causing the third elastic element 46 to compress and deform. Simultaneously, the third elastic element 46 pushes against the mounting seat 45, causing the first locking element 2 to move downward. For example... Figure 15 As shown, when the push rod 11 approaches the bracket 12, the first locking member 2 and the second locking member 3 lock together (the locking hook is hooked on the hanging column), and the frame 1 remains in the folded state.

[0151] When the frame 1 needs to be unfolded, the push handle 111 unfolds relative to the push rod 112. During this process, the traction cable loosens, the third elastic element 46 pushes against the moving seat 41, causing the mounting seat 45 to move in the opposite direction. The first locking element 2 moves upward with the mounting seat 45 and disengages from the second locking element 3 (see reference). Figure 14 and Figure 15 (In the orientation of the bracket 12 and push rod 11, the frame 1 can be unlocked and the frame 1 can be unfolded smoothly.)

[0152] Example 3

[0153] This embodiment provides a trolley, which differs from Embodiment 2 in that:

[0154] See Figure 17 , Figure 18 and Figure 19 The support frame 12 includes a front support 121 and a rear support 122 that can be brought together and unfolded. The push rod 112 is provided with a first locking member 2, and the rear support 122 is provided with a second locking member 3. When the first locking member 2 and the second locking member 3 are locked, the rear support 122 and the push rod 11 are fixedly limited together, so that the frame 1 can be stably kept in the folded state.

[0155] See Figure 17 and Figure 20 The push rod 11 has a receiving cavity 1120, and the movable seat 41 and the mounting seat 45 are both located within the receiving cavity 1120. The first locking member 2 includes a hanging post, and the second locking member 3 includes a locking hook disposed on the bracket 12. One end of the hanging post is fixedly connected to the mounting seat 45, and the other end of the hanging post extends out of the receiving cavity 1120 and can be moved to engage with the hook groove of the locking hook. When the operating push handle 111 is folded relative to the push rod body 112, the traction cable is tensioned and pulls the movable seat 41 to slide downward. The movable seat 41 is compressed and, by pushing against the mounting seat 45, drives the hanging post to move downward, thus combining... Figure 18 and Figure 19When the push rod 11 and the support 12 are close to each other, the hanging column moves downward to the hook groove of the lock hook, so that the push rod 11 and the support 12 are locked, and the frame 1 is kept in the folded state.

[0156] When the handle 111 is unfolded relative to the push rod 112, the traction rope is loosened, the elastic potential energy is released, and the moving seat 41 slides upward relative to the push rod 112 under the elastic force, the mounting seat 45 slides in the sliding groove 417, when the mounting seat 45 abuts against the end groove wall of the sliding groove 417, the moving seat 41 drives the mounting seat 45 to move upward synchronously, so that the hanging column moves upward relative to the push rod 112 and is separated from the hook groove of the lock hook, the push rod 11 and the support 12 are unlocked, and at this time, the frame 1 can be unfolded.

[0157] The folding and unfolding actions of the handle 111 and the push rod 112 and the moving action of the hanging column relative to the push rod 112 are linked, the automatic locking and unlocking of the lock hook and the hanging column are realized, manual operation is not needed, the frame 1 is convenient to fold and unfold, and the frame 1 can be kept in the folded state stably after being folded, so that the frame 1 is convenient to store and carry.

[0158] Referring to Figure 17 and Figure 21 , the push rod 11 is provided with a third sliding hole 1123 communicating with the containing cavity 1120, and the hanging column is arranged in the third sliding hole 1123 and is in sliding cooperation with the third sliding hole 1123. When the moving seat 41 slides in the containing cavity 1120 and drives the mounting seat 45 to move relative to the push rod 112, the hanging column slides in the third sliding hole 1123, the third sliding hole 1123 can limit the moving direction of the hanging column and the moving stroke of the hanging column relative to the push rod 112, and the accurate locking and unlocking of the hanging column and the lock hook are ensured.

[0159] Further, referring to Figure 17 and Figure 21 , since the push rod 11 is more outward relative to the support 12 after the frame 1 is folded, the hanging column is designed on the inner side of the push rod 112, so that the lock hook can be hooked on the hanging column after the frame 1 is folded. In other embodiments, the setting position of the hanging column can be changed according to the relative position relationship between the push rod 11 and the support 12.

[0160] Exemplarily, the hanging column can be fixed to the mounting seat 45 through a fixing member such as a screw, the connection is firm, and the assembly is convenient. Alternatively, the hanging column and the mounting seat 45 can be integrally formed.

[0161] Optionally, referring to Figure 21 , one end of the hanging column extending out of the third sliding hole 1123 is provided with a limiting portion 26, the limiting portion 26 can limit the lock hook from separating from the hanging column in the axial direction of the hanging column, and the firm hooking of the lock hook and the hanging column is ensured.

[0162] The folding and unfolding processes of the frame provided in the embodiment are as follows:

[0163] Folding the frame 1, as shown in Figure 17 and Figure 18 , the handle 111 is folded relative to the push rod 112, in the process, referring to Figure 20 , the traction cable pulls the moving seat 41 to move downward relative to the push rod 112, compressing and deforming, while pushing the mounting seat 45 to move the first locking member 2 (hanging column) downward. As shown in Figure 19 , when the push rod 11 and the bracket 12 are close, the first locking member 2 is locked with the second locking member 3 (the hanging column is clamped into the hook groove of the hook), and the frame 1 is kept in the folded state.

[0164] When the frame 1 needs to be unfolded, the handle 111 is unfolded relative to the push rod 112, in the process, the traction cable is relaxed, the moving seat 41 pushes the mounting seat 45 to move reversely, referring to the position in Figure 18 , Figure 19 , the first locking member 2 (hanging column) moves upward with the mounting seat 45 to be separated from the second locking member 3 (hook), the bracket 12 and the push rod 11 are unlocked, and the frame 1 can be unfolded smoothly.

[0165] Note that the above is only the preferred embodiment of the present application and the technical principle applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments here, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A cart, characterized in that, The utility model relates to a kind of stroller, comprising: Frame, including push rod and support, the push rod includes relatively expandable and foldable push handle and push rod stem; The frame has unfolded state and folded state, in the folded state, the push handle is close to the push rod stem, the push rod stem is close to the support; First locking member, movably arranged in the push rod, and having locking position and unlocking position; Second locking member, arranged in the support; Transmission mechanism, transmission connection the push rod and the first locking member, when the frame is switched from the folded state to the unfolded state, the push handle can drive the first locking member to move to the unlocking position, the first locking member is separated from the second locking member, so that the push rod stem can move away from the support.

2. The cart of claim 1, wherein, The transmission mechanism includes moving seat, the moving seat is movably arranged in the push rod along preset direction, the first locking member is transmission connection with the moving seat, when the push handle is unfolded relative to the push rod stem, the moving seat moves relative to the push rod and drives the first locking member to move to the unlocking position, so that the first locking member is separated from the second locking member; The transmission mechanism includes elastic component, the elastic component is arranged between the moving seat and the push rod, or the elastic component is arranged between the moving seat and the first locking member;When the first locking member is in the locking position, the elastic component is in the compression energy storage state, when the push handle is unfolded relative to the push rod stem, the elastic component releases elastic potential energy, to drive the moving seat to drive the first locking member to move to the unlocking position.

3. The cart of claim 2, wherein, The first locking member is rotationally arranged in the push rod; The transmission mechanism further includes swing member rotationally connected to the push rod stem, the first locking member is fixedly connected with the swing member, the swing member is provided with first matching part, the moving seat is provided with second matching part, when the moving seat moves relative to the push rod stem, the first matching part cooperates with the second matching part, to drive the swing member to drive the first locking member to rotate to the unlocking position; And / or, The push rod stem has accommodating cavity, the fixed seat is arranged in the accommodating cavity, the moving seat is slidably arranged in the fixed seat and located in the accommodating cavity; The elastic component includes first elastic member arranged between the moving seat and the fixed seat, when the push handle is unfolded relative to the push rod stem, the first elastic member drives the moving seat to drive the first locking member to move to the unlocking position; And / or, The transmission mechanism further includes traction cable, the push handle is rotationally connected with the push rod stem, the push handle and the push rod stem are provided with traction part at the rotational connection, one end of the traction cable is connected with the traction part, the other end is connected with the moving seat, when the push handle is folded relative to the push rod stem, the traction part tensioning the traction cable, so that the traction cable drives the moving seat to move and drives the first locking member to move to the locking position.

4. The cart of claim 3, wherein, The first matching part comprises a guide groove arranged on the swing member, and the extension direction of the guide groove is arranged at an angle with the moving direction of the moving seat; the second matching part comprises a driving column arranged on the moving seat, and the driving column is arranged through the guide groove and is in sliding cooperation with the guide groove; when the moving seat moves, the driving column can push the groove wall of the guide groove, so that the swing member drives the first locking member to rotate; And / or, the swing member is rotatably connected to the push rod rod body through a rotating shaft, the swing member is provided with a connecting shaft coaxial with the rotating shaft, the first locking member is provided with a insertion hole, the connecting shaft is inserted into the insertion hole, and the first locking member is circumferentially limited on the swing member; And / or, the first locking member and the push rod rod body are provided with a second elastic member, and the second elastic member has a tendency to drive the first locking member to rotate towards the locking position; And / or, a buffer gasket is arranged between the swing member and the push rod rod body.

5. The cart of claim 4, wherein, The connecting shaft is provided with an axial hole, and the rotating shaft is arranged through the axial hole and in rotating cooperation with the axial hole; And / or, one of the first locking member and the swing member is provided with a first limiting protrusion spaced from the connecting shaft, and the other is provided with a first limiting groove, and the first limiting protrusion is inserted into the first limiting groove.

6. The cart of claim 3, wherein, The fixed seat is provided with a sliding space, and the moving seat is slidingly arranged in the sliding space; One of the moving seat and the fixed seat is provided with a first guide groove, and the other is provided with a first guide protrusion, and the first guide protrusion and the first guide groove are in sliding cooperation in the moving direction of the moving seat; and / or, One of the moving seat and the fixed seat is provided with a second guide groove, and the other is provided with a second guide protrusion, and the second guide protrusion and the second guide groove are in sliding cooperation; and / or, The moving seat is provided with a second limiting groove, and the fixed seat is provided with a second limiting protrusion in the sliding space, one end of the first elastic member is sleeved on the second limiting protrusion, and the other end is inserted into the second limiting groove.

7. The cart of claim 2, wherein, The first locking member is slidingly arranged on the push rod; The transmission mechanism further comprises a mounting seat, the first locking member is fixedly arranged on the mounting seat, the mounting seat is slidingly arranged on the moving seat, and the elastic member comprises a third elastic member arranged between the mounting seat and the moving seat; When the push handle is unfolded relative to the push rod rod body, the third elastic member can drive the moving seat to move the mounting seat relative to the push rod, so that the first locking member is separated from the second locking member; and / or, when the push handle is folded relative to the push rod rod body, the moving seat drives the mounting seat to move relative to the push rod by extruding the third elastic member, so that the first locking member moves towards the locking position.

8. The cart of claim 7, wherein, The push rod has a containing cavity, and the moving seat and the mounting seat are located in the containing cavity; The first locking member comprises a hook, and the second locking member comprises a hanging column arranged on the bracket. One end of the hook is provided with a sliding sleeve which is sleeved on the push rod and fixedly connected with the mounting seat. The other end of the hook is capable of being hooked on the hanging column. The first locking member comprises a hanging column, and the second locking member comprises a hook arranged on the bracket. One end of the hanging column is fixedly connected with the mounting seat, and the other end of the hanging column is capable of being movably clamped into a hook groove of the hook. And / or, The moving seat is provided with a sliding groove, the mounting seat is at least partially located in the sliding groove and is in sliding fit with the sliding groove, the third elastic member is located in the sliding groove, and one end of the third elastic member is abutted against a groove wall of the sliding groove, and the other end is abutted against the mounting seat. And / or, The moving seat is provided with a first positioning protrusion, the mounting seat is provided with a second positioning protrusion, one end of the third elastic member is sleeved on the first positioning protrusion, and the other end is sleeved on the second positioning protrusion.

9. The cart of claim 8, wherein, When the first locking member is a hook and the second locking member is a hanging column, the push rod is provided with a second sliding hole which is in communication with the accommodating cavity, the sliding sleeve is fixedly connected with the mounting seat through a fastener, and the fastener is slidably arranged in the second sliding hole. When the first locking member is a hanging column and the second locking member is a hook, the push rod is provided with a third sliding hole which is in communication with the accommodating cavity, and the hanging column is arranged in the third sliding hole and is in sliding fit with the third sliding hole.

10. The cart of any of claims 1-9, wherein, The bracket comprises a front bracket and a rear bracket which are capable of being relatively close to each other and spread apart, the push rod is provided with the first locking member, and the front bracket or the rear bracket is provided with the second locking member.

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