Trolley

Abstract

The utility model relates to the technical field of children products, and discloses a cart which comprises a cart frame, a first locking piece, a second locking piece and a transmission assembly. The frame comprises a push rod and a support. The push rod comprises a push handle and a push rod body which can be folded and unfolded relatively. The frame has an unfolded state and a folded state, and in the folded state, the push handle is drawn close to the push rod body, and the push rod body is drawn close to the support. The first locking piece is movably arranged on the push rod and moves between the locking position and the unlocking position, and the second locking piece is arranged on the support. The transmission assembly is in transmission connection with the push rod and the first locking piece, when the frame is switched to the folded state, the push handle can drive the first locking piece to move to the locking position, and the first locking piece is connected with the second locking piece so as to limit the push rod body to move in the direction away from the support. The folding action of the push handle and the push rod body is linked with the action of the first locking piece through the transmission assembly, the bicycle frame is automatically locked in the folding state after being folded, manual operation is not needed, and use is convenient.

Description

TECHNICAL FIELD

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

[0002] The child stroller is the necessary tool of baby family, can alleviate the user's take the baby burden, also can provide comfortable ride environment for children.

[0003] The existing child stroller mostly can be folded and be stored, and it is convenient to carry outside, but part child strollers do not have fixing after folding frame, and it is easy to unfold. Part child strollers although designed locking structure, for example, through the hook fixed frame, make frame keep in the folded state, but need manual operation hook to lock frame after folding, and the operation is tedious, and the use is inconvenient.

[0004] Therefore, an urgent need for a cart to solve the above problems. UTILITY MODEL CONTENTS

[0005] Based on above problem, the utility model's purpose lies in providing a kind of cart, can be automatically locked when frame folding, need not manual operation, it is convenient to use.

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

[0007] Provide a kind of cart, including:

[0008] Frame, including push rod and support, the push rod includes relatively foldable and unfoldable 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, and the push rod stem is close to the support;

[0009] First locking piece, movably arranged in the push rod, and moves in locking position and unlocking position;

[0010] Second locking piece, is arranged in the support;

[0011] Transmission assembly, transmission connection the push rod with the first locking piece, when the frame switches to the folded state, the push handle can drive the first locking piece to move to the locking position, and the first locking piece is engaged with the second locking piece, to limit the push rod stem moves in the direction away from the support.

[0012] As the optional scheme of the utility model's cart, the transmission assembly includes sliding seat, which is slidably arranged in the push rod along a predetermined direction, the first locking piece is connected with the sliding seat, and when the push handle is folded relative to the push rod stem, the sliding seat slides and drives the first locking piece to move, so that the first locking piece is engaged with the second locking piece;

[0013] The transmission assembly comprises a traction rope, two ends of the traction rope are connected with the push rod and the sliding seat respectively, and the push handle drives the sliding seat to slide through the traction rope when the push handle is folded.

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

[0015] The transmission assembly further comprises a mounting seat and a first elastic member, the first locking member is fixedly arranged on the mounting seat, the mounting seat is slidingly arranged on the sliding seat along a preset direction, and the first elastic member is limited between the mounting seat and the sliding seat;

[0016] When the push handle is folded relative to the push rod body, the sliding seat drives the mounting seat to move relative to the push rod by extruding the first elastic member, so that the first locking member moves towards the position locked by the second locking member; and / or,

[0017] When the push handle is folded relative to the push rod body, the first elastic member can drive the sliding seat to move the mounting seat relative to the push rod, so that the first locking member is separated from the second locking member;

[0018] and / or,

[0019] The push handle is rotationally connected with the push rod body, a traction part is arranged at the rotational connection position of the push handle and the push rod body, one end of the traction rope is connected with the traction part, and the push handle can drive the traction part to rotate relative to the push rod body, so as to tension the traction rope.

[0020] As an optional scheme of the utility model's stroller, the push rod has a containing cavity, and the sliding seat and the mounting seat are located in the containing cavity;

[0021] The first locking member comprises a locking hook, the second locking member comprises a hanging column arranged on the support, one end of the locking hook is provided with a sliding sleeve, the sliding sleeve is slidingly sleeved on the outside of the push rod, the sliding sleeve is fixedly connected with the mounting seat, and the other end of the locking hook can be hooked on the hanging column; or,

[0022] The first locking member comprises a hanging column, the second locking member comprises a locking 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 locking hook;

[0023] and / or,

[0024] The sliding 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 first elastic member is located in the sliding groove, and one end of the first elastic member abuts against a groove wall of the sliding groove and the other end abuts against the mounting seat;

[0025] and / or,

[0026] The sliding seat is provided with a first positioning protrusion, the mounting seat is provided with a second positioning protrusion, one end of the first elastic member is sleeved on the first positioning protrusion, and the other end is sleeved on the second positioning protrusion.

[0027] As an optional scheme of the stroller of the utility model, when the first locking member is a hook and the second locking member is a hanging column, the push rod is provided with a first sliding hole communicating 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 first sliding hole;

[0028] When the first locking member is a hanging column and the second locking member is a hook, the push rod is provided with a second sliding hole communicating with the accommodating cavity, and the hanging column is arranged in the second sliding hole and is in sliding fit with the second sliding hole.

[0029] As an optional scheme of the stroller of the utility model, the first locking member is rotatably arranged on the push rod;

[0030] The transmission assembly further comprises a swing member rotatably connected to the push rod, the first locking member is fixedly connected with the swing member, the swing member is provided with a first matching part, the sliding seat is provided with a second matching part, and when the traction cable drives the sliding seat to slide, 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 locking position; and / or,

[0031] The push rod body has an accommodating cavity, the accommodating cavity is provided with a fixing seat, the sliding seat is slidably arranged in the fixing seat and located in the accommodating cavity;

[0032] The transmission assembly further comprises a second elastic member arranged between the sliding seat and the fixing seat, the second elastic member is compressed and deformed when the traction cable drives the sliding seat to move, and the second elastic member drives the sliding seat to drive the first locking member to rotate towards the unlocking position when the push handle is unfolded relative to the push rod body.

[0033] As an optional scheme of the utility model's cart, the first cooperation part includes the guide groove arranged in the swing piece, the extension direction of the guide groove is arranged at the angle with the moving direction of the sliding seat, the second cooperation part includes the drive column arranged in the sliding seat, the drive column is arranged in the guide groove and is slidably connected with the guide groove, when the traction belt drives the sliding seat to move, the drive column can push the groove wall of the guide groove, so that the swing piece drives the first locking piece to rotate towards the locking position;

[0034] And / or, the swing piece is rotatably connected with the push rod rod body through the rotating shaft, the swing piece is provided with the connecting shaft coaxial with the rotating shaft, the first locking piece is provided with the insertion hole, the connecting shaft is inserted into the insertion hole, and the first locking piece is circumferentially limited in the swing piece;

[0035] And / or, the third elastic piece is arranged between the first locking piece and the push rod rod body, and the third elastic piece has a tendency to drive the first locking piece to rotate towards the locking position;

[0036] And / or, the swing piece and the push rod rod body are provided with a buffer gasket.

[0037] As an optional scheme of the utility model's cart, the connecting shaft is provided with an axial hole, the rotating shaft is arranged in the axial hole and is rotatably connected with the axial hole;

[0038] And / or, one of the first locking piece and the swing piece 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.

[0039] As an optional scheme of the utility model's cart, the fixed seat is provided with a sliding space, and the sliding seat is slidably arranged in the sliding space;

[0040] One of the sliding 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 sliding direction of the sliding seat; and / or,

[0041] One of the sliding 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,

[0042] The second limiting groove is arranged on the sliding seat, the second limiting protrusion is arranged in the sliding space of the fixed seat, one end of the second elastic piece is sleeved on the second limiting protrusion, and the other end is inserted into the second limiting groove.

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

[0044] The utility model discloses beneficial effect is:

[0045] The utility model discloses a cart, when folding the folding frame, the operation push handle is folded relative push rod rod body, and the push rod can drive the first locking piece to move relative push rod towards the locking position through the transmission assembly, when push rod and support close, the first locking piece moves to the engagement with the second locking piece, to limit push rod rod body and move away from the direction of support, and push rod and support are fixed together, and the folding frame keeps the folding state, and the cart is convenient to store and carry.

[0046] During the folding process of the folding frame, the folding action of the push handle and the push rod rod body can be linked with the action of the transmission assembly and the first locking piece, drive the first locking piece to automatically move towards the locking position to be engaged with the second locking piece, so that the folding frame is automatically locked in the folded state after folding, without the need for manual locking operation of the push rod and the support, the operation steps of the folding frame are simplified, the operation convenience of the folding frame is improved, and the user's use experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced, 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 embodiments of the utility model and these drawings without the creative labor of the ordinary skilled in the art.

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

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

[0050] Figure 3 It is the structure schematic diagram of the cart in the folded state provided by the embodiment one of the utility model;

[0051] Figure 4 It is the sectional schematic diagram of the first locking piece and the transmission assembly provided by the embodiment one of the utility model;

[0052] Figure 5 It is the exploded schematic diagram of the rotating connection of the push handle and the push rod rod body provided by the embodiment of the utility model;

[0053] Figure 6 is a structure schematic view of the cart in the unfolded state according to the second embodiment of the present utility model;

[0054] Figure 7 is a folding process schematic view of the cart according to the second embodiment of the present utility model;

[0055] Figure 8 is a structure schematic view of the cart in the folded state according to the second embodiment of the present utility model;

[0056] Figure 9 is a sectional view of the first locking member and the transmission assembly according to the second embodiment of the present utility model;

[0057] Figure 10 is Figure 6 is an enlarged view of part A in figure 12;

[0058] Figure 11 is a structure schematic view of the cart according to the third embodiment of the present utility model;

[0059] Figure 12 is a first folding process schematic view of the cart according to the third embodiment of the present utility model;

[0060] Figure 13 is a second folding process schematic view of the cart according to the third embodiment of the present utility model;

[0061] Figure 14 is a schematic view of the cart after folding according to the third embodiment of the present utility model;

[0062] Figure 15 is a schematic view of the first locking member in the unlocked position according to the third embodiment of the present utility model;

[0063] Figure 16 is a first structure schematic view of the first locking member and the transmission assembly (the first locking member is in the unlocked position) according to the third embodiment of the present utility model;

[0064] Figure 17 is a schematic view of the first locking member in the locked position according to the third embodiment of the present utility model;

[0065] Figure 18 is a second structure schematic view of the first locking member and the transmission assembly (the first locking member is in the locked position) according to the third embodiment of the present utility model;

[0066] Figure 19 is an exploded schematic view of the first locking member and the transmission assembly according to the third embodiment of the present utility model;

[0067] Figure 20 is a sectional view of the first locking member and the transmission assembly according to the third embodiment of the present utility model.

[0068] Fig. :

[0069] 1, frame; 2, first locking member; 3, second locking member; 4, transmission assembly; 5, third elastic member; 6, buffer gasket;

[0070] 11, push rod; 12, bracket; 13, fixing seat;

[0071] 111, handle; 112, push rod body; 113, traction part; 114, locking part; 115, unlocking part;

[0072] 121, front wheel bracket; 122, rear wheel bracket;

[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, third fixing hole; 138, clamping hole;

[0075] 21, sliding sleeve; 22, fastener; 23, limiting part;

[0076] 24, insertion hole; 25, accommodating groove; 26, barrel part;

[0077] 41, sliding seat; 42, mounting seat; 43, first elastic member; 40, traction cable;

[0078] 411, sliding groove; 412, first positioning protrusion; 413, first fixing hole;

[0079] 421, second positioning protrusion;

[0080] 414, driving column; 415, first guide protrusion; 416, extension part; 417, second guide groove; 418, second limiting groove; 419, second fixing hole;

[0081] 44, swinging member; 45, second elastic member; 46, rotating shaft;

[0082] 441, guide groove; 442, connecting shaft; 4421, shaft hole; 443, first limiting protrusion;

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

[0084] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0085] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Specifically, the terms "first position" and "second position" refer to two different positions.

[0086] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0087] Example 1

[0088] like Figures 1 to 4 As shown, this embodiment provides a trolley that automatically locks when the frame 1 is folded, eliminating the need for manual operation and making it convenient to use. The trolley includes a frame 1, a first locking member 2, a second locking member 3, and a transmission assembly 4.

[0089] Among them, see Figure 1 , Figure 2 and Figure 3, the frame 1 comprises a push rod 11 and a support 12, the push rod 11 and the support 12 can be relatively close and unfolded, the push rod 11 comprises a push handle 111 and a push rod body 112 which can be relatively folded and unfolded. 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. The first locking piece 2 is movably arranged on the push rod 11 and movably arranged in a locking position and an unlocking position. The second locking piece 3 is arranged on the support 12. The transmission assembly 4 is transmissionally connected between the push rod 11 and the first locking piece 2, when the frame 1 is switched to the folded state, the push handle 111 can drive the first locking piece 2 to move to the locking position, and the first locking piece 2 is engaged with the second locking piece 3 to limit the movement of the push rod body 112 away from the support 12.

[0090] As shown in Figure 1 and Figure 2 , when the frame 1 is folded, the push handle 111 is folded relative to the push rod body 112, and the push rod 11 can drive the first locking piece 2 to move to the locking position relative to the push rod 11 through the transmission assembly 4, when the push rod 11 is close to the support 12, as shown in Figure 3 , the first locking piece 2 is moved to be engaged with the second locking piece 3 to limit the movement of the push rod body 112 away from the support 12, the push rod 11 and the support 12 are fixed together, and the frame 1 remains in the folded state, which is convenient for storage and carrying of the stroller.

[0091] Since the folding and unfolding of the frame 1, the folding action of the push handle 111 and the push rod body 112 can be linked with the action of the first locking piece 2 through the transmission assembly 4, and the first locking piece 2 is automatically driven to move to the locking position to be engaged with the second locking piece 3, so that the frame 1 is automatically locked in the folded state after being folded, without the need for manual locking operation of the push rod 11 and the support 12, which simplifies the operation steps of folding the frame 1, improves the operation convenience of folding the frame 1, and improves the user experience.

[0092] In the embodiment, referring to Figure 1 , Figure 2 and Figure 3 , the support 12 comprises a front wheel support 121 and a rear wheel support 122 which can be relatively close and unfolded, the push rod body 112 is provided with the first locking piece 2, and the front wheel support 121 or the rear wheel support 122 is provided with the second locking piece 3. In the embodiment, the second locking piece 3 is arranged on the rear wheel support 122, a connecting rod is connected between the rear wheel support 122 and the front wheel support 121, when the frame 1 is folded, the connecting rod pulls the front wheel support 121 and the rear wheel support 122 to close, and when the first locking piece 2 is locked with the second locking piece 3, the rear wheel support 122 and the push rod 11 are fixed and limited together, and the front wheel support 121 is kept in the close state through the connecting rod and the rear wheel support 122, so that the frame 1 can be stably kept in the folded state.

[0093] In other embodiments, the second locking member 3 can also be arranged on the front wheel support 121, and after the folding of the frame 1, the first locking member 2 is locked with the second locking member 3, and the rear wheel support 122 is limited between the push rod 11 and the front wheel support 121, so that the frame 1 can be stably kept in the folded state.

[0094] Optionally, referring to Figure 4 , the transmission assembly 4 comprises a sliding seat 41 arranged on the push rod 11 and sliding in a preset direction, and the first locking member 2 is connected with the sliding seat 41. When the push handle 111 is folded or unfolded relative to the push rod body 112, the sliding seat 41 slides relative to the push rod 11 and drives the first locking member 2 to move, so that the first locking member 2 is locked or separated from the second locking member 3. That is, by driving the sliding seat 41 to slide, the first locking member 2 is moved relative to the push rod 11, so that the first locking member 2 is locked or separated from the second locking member 3. In this embodiment, the preset direction is the extension direction of the push rod 11.

[0095] Optionally, one of the sliding seat 41 and the push rod 11 is provided with a third guide protrusion, and the other is provided with a third guide groove, and the third guide protrusion and the third guide groove are in sliding fit in the preset direction. The cooperation of the third guide protrusion and the third guide groove can limit the sliding direction of the sliding seat 41, make the sliding of the sliding seat 41 more smooth, and ensure the smooth locking and unlocking of the first locking member 2 and the second locking member 3. For example, the third guide protrusion can be arranged on the push rod 11, and the third guide groove can be arranged on the sliding seat 41.

[0096] Optionally, the transmission assembly 4 further comprises a traction cable, and the two ends of the traction cable are connected with the push rod 11 and the sliding seat 41 respectively. When the push handle 111 is folded relative to the push rod body 112, the sliding seat 41 is driven to slide relative to the push rod 11 through the traction cable. That is, during the folding process of the push handle 111 relative to the push rod body 112, the traction cable is pulled, and the sliding seat 41 is driven to slide relative to the push rod body 112, so that the first locking member 2 moves synchronously, the folding action of the push handle 111 and the push rod body 112 is linked with the movement of the first locking member 2, and then the first locking member 2 is driven to move to be locked with the second locking member 3, without the need for separate operation of the first locking member 2 and the first locking member 2.

[0097] In this embodiment, as shown in Figure 1 and Figure 2 , the first locking member 2 is located at the lower region of the push rod body 112, so that when the frame 1 is in the unfolded state, the first locking member 2 will not hinder the user from normally using the stroller.

[0098] Referring to Figure 1 , Figure 2 and Figure 5, the push handle 111 is rotationally connected with the push rod body 112, a traction part 113 is arranged at the rotationally connected part of the push handle 111 and the push rod body 112, one end of the traction cable 40 is connected with the traction part 113, and the push handle 111 can drive the traction part 113 to rotate relative to the push rod body 112 to tension the traction cable 40, so that the traction cable 40 drives the sliding seat 41 to slide.

[0099] Specifically, 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, a locking part 114 and an unlocking part 115 are further arranged between the first joint seat and the second joint seat, the locking part 114 is movable along the rotation axis of the push handle 111 and the push rod body 112, the unlocking part 115 is movable along and rotatable about the rotation axis, a plug part is protruded on the traction part 113, a plug groove is arranged on the locking part 114, and the plug part is inserted into the plug groove. The first joint seat and the second joint seat are both provided with a locking groove, and the locking part 114 is simultaneously clamped with the locking grooves of the first joint seat and the second joint seat when the push rod 11 is in the unfolded state.

[0100] 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, and the traction rope is located in the push handle 111), when the push handle 111 and the push rod body 112 are folded, the operation part 1111 is pressed to drive the traction rope to rotate the unlocking part 115, at the same time, the locking part 114 is separated from the locking groove of the second joint seat and only clamped with the first joint seat, the rotationally connected 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 the push handle 111 is rotated and folded, in this process, the locking part 114 drives the traction part 113 to rotate through the slot wall of the plug groove, the traction cable 40 is pulled and tensioned, so as to pull the sliding seat 41 to slide relative to the push rod body 112 and drive the first locking part 2 to move.

[0101] Further, the push handle 111 and the push rod body 112 are both tubular structures, and the traction cable is located in the lumen of the push rod body 112.

[0102] Further, referring to Figure 4 , the sliding seat 41 is provided with a first fixing hole 413, 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 413 to realize the connection between the traction cable and the sliding seat 41.

[0103] Optionally, referring to Figure 1 , Figure 2 and Figure 4The first locking member 2 is slidingly arranged on the push rod 11. The transmission assembly 4 further comprises a mounting seat 42 and a first elastic member 43. The first locking member 2 is fixedly arranged on the mounting seat 42. The mounting seat 42 is slidingly arranged on the sliding seat 41 along a preset direction. The first elastic member 43 is limited between the mounting seat 42 and the sliding seat 41. When the handle 111 is folded relative to the push rod body 112, the sliding seat 41 drives the mounting seat 42 to move relative to the push rod 11 by extruding the first elastic member 43, so as to move the first locking member 2 towards the locking position.

[0104] Specifically, during folding of the handle 111 relative to the push rod body 112, the traction cable is tensioned, as shown in Figure 4 The traction cable pulls the sliding seat 41 to move downwards relative to the push rod body 112, and extrudes the first elastic member 43 to generate a certain deformation. While the sliding seat 41 slides, the first elastic member 43 pushes the mounting seat 42 to move downwards along with the sliding seat 41, so as to move the mounting seat 42 along with the first locking member 2 downwards, as shown in Figure 2 and Figure 3 When the push rod 11 is close to the support 12, the first locking member 2 moves downwards to be locked with the second locking member 3, so as to lock the frame 1 in the folded state.

[0105] Further, when the handle 111 is unfolded relative to the push rod body 112, the first elastic member 43 can drive the sliding seat 41 to move the mounting seat 42 relative to the push rod 11, so as to make the first locking member 2 disengage from the second locking member 3.

[0106] Specifically, when unfolding the frame 1, the handle 111 is unfolded relative to the push rod body 112. During this process, the traction cable is relaxed, the pulling force on the sliding seat 41 is reduced or even removed, and the first elastic member 43 releases the elastic potential energy, so as to drive the sliding seat 41 to slide upwards relative to the push rod body 112. Since the mounting seat 42 is located on the sliding seat 41, the sliding seat 41 can drive the mounting seat 42 to move upwards together, so as to move the first locking member 2 upwards along with the mounting seat 42 to disengage 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 arrangement of the first elastic member 43 makes the unfolding action of the handle 111 relative to the push rod body 112 and the disengagement action of the first locking member 2 relative to the second locking member 3 be linked, and the push rod 11 is automatically unlocked from the support 12 without manual operation. That is, during unfolding of the stroller, the first locking member 2 can automatically disengage from the second locking member 3 to realize automatic unlocking, and the operation convenience during unfolding of the frame 1 is improved.

[0107] Optionally, referring to Figure 4The sliding seat 41 is provided with a sliding groove 411, the mounting seat 42 is at least partially located in the sliding groove 411 and is in sliding cooperation with the sliding groove 411, and the first elastic member 43 is located in the sliding groove 411 and one end of the first elastic member 43 abuts against the groove wall of the sliding groove 411 and the other end abuts against the mounting seat 42. At the moment when the traction cable pulls the sliding seat 41 to slide downward, the sliding seat 41 slides relative to the mounting seat 42, that is, the mounting seat 42 slides in the sliding groove 411, and the first elastic member 43 is extruded. When the sliding seat 41 continues to slide downward, the first elastic member 43 pushes the mounting seat 42 to slide downward together with the sliding seat 41, so as to drive 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 first elastic member 43 releases the elastic potential energy, and under the action of the elastic force of the first elastic member 43, the sliding seat 41 slides upward relative to the push rod body 112, the mounting seat 42 slides in the sliding groove 411, and when the mounting seat 42 abuts against the end groove wall of the sliding groove 411, the sliding seat 41 drives the mounting seat 42 to move upward synchronously, so as to drive the first locking member 2 to move upward relative to the push rod body 112.

[0108] The mounting seat 42 is slidably arranged in the sliding groove 411, which can limit the moving direction and stroke of the mounting seat 42, and ensure smooth locking and unlocking of the first locking member 2 and the second locking member 3. Moreover, the first elastic member 43 is arranged in the sliding groove 411, which can limit the extension direction of the first elastic member 43, so as to stably drive the mounting seat 42 to move the first locking member 2.

[0109] Continuously referring to Figure 4 The sliding seat 41 is provided with a first positioning protrusion 412, the mounting seat 42 is provided with a second positioning protrusion 421, one end of the first elastic member 43 is sleeved on the first positioning protrusion 412, and the other end is sleeved on the second positioning protrusion 421. The first positioning protrusion 412 and the second positioning protrusion 421 can stably install the first elastic member 43 in the sliding groove 411, further ensure that the first elastic member 43 can only extend in the extension direction of the sliding groove 411, and improve the moving stability of the mounting seat 42 and the sliding seat 41. Exemplarily, the first elastic member 43 is a spring.

[0110] Optionally, referring to Figure 4 The push rod 11 has a containing cavity 1120, and the sliding seat 41 and the mounting seat 42 are located in the containing cavity 1120. Hiding the sliding seat 41 and the mounting seat 42 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.

[0111] Optionally, referring to Figure 1 , Figure 2 , Figure 3And Figure 4 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 21 which is sleeved on the push rod 11 and is fixedly connected with the mounting seat 42. 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 sliding seat 41 drives the mounting seat 42 and the sliding sleeve 21 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.

[0112] In the embodiment, the sliding sleeve 21 and the hook are integrally formed, which is convenient for assembly. In other embodiments, the sliding sleeve 21 and the hook can also be designed in a split type, and the sliding sleeve 21 and the hook are assembled together at a later stage.

[0113] Referring to Figure 1 and Figure 4 The push rod 11 is provided with a first sliding hole 1121 which is in communication with the containing cavity 1120. The sliding sleeve 21 is fixedly connected with the mounting seat 42 through a fastener 22 which is slidably arranged in the first sliding hole 1121. When the sliding seat 41 slides in the containing cavity 1120 and drives the mounting seat 42 to move relative to the push rod body 112, the fastener 22 slides in the first sliding hole 1121, so that the first locking member 2 can move a certain distance relative to the push rod body 112. Exemplarily, the first sliding hole 1121 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.

[0114] Further, referring to Figure 1 , Figure 2 and Figure 3 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.

[0115] Exemplarily, the fastener 22 can be a bolt, a screw or the like. The mounting seat 42 is provided with a threaded hole, and the fastener 22 penetrates through the sliding sleeve 21, the first sliding hole 1121 and is threadedly connected with the threaded hole, so as to fixedly connect the sliding sleeve 21 and the mounting seat 42, and the sliding sleeve 21 can slide relative to the push rod body 112.

[0116] 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.

[0117] The folding and unfolding process of the cart provided in this embodiment is as follows:

[0118] When folding the frame 1, as Figure 1 and Figure 2 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 4 The traction cable pulls the sliding seat 41 downward relative to the push rod 112, causing the first elastic element 43 to compress and deform. Simultaneously, the first elastic element 43 pushes against the mounting seat 42, causing the first locking element 2 to move downward. For example... Figure 3 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.

[0119] 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 first elastic element 43 pushes against the sliding seat 41, causing the mounting seat 42 to move in the opposite direction. The first locking element 2 moves upward with the mounting seat 42 and disengages from the second locking element 3 (see reference). Figure 2 Figure 3 (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.)

[0120] Example 2

[0121] like Figures 6 to 10 As shown, this embodiment provides a trolley, which differs from Embodiment 1 in that:

[0122] See Figure 6 , Figure 7 and Figure 8 The bracket 12 includes a front wheel bracket 121 and a rear wheel bracket 122 that can be brought together and unfolded. The push rod 112 is provided with a first locking member 2, and the rear wheel bracket 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 wheel bracket 122 and the push rod 11 are fixedly limited together, so that the frame 1 can be stably kept in the folded state.

[0123] See Figure 6 and Figure 9 The push rod 11 has a receiving cavity 1120, and the sliding seat 41 and the mounting seat 42 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 42, 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 push handle 111 is folded relative to the push rod body 112, the traction cable is tensioned and pulls the sliding seat 41 downward. The sliding seat 41 presses against the first elastic member 43, and through the first elastic member 43, pushes against the mounting seat 42, causing the hanging post to move downward. Figure 7 and Figure 8When 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, the push rod 11 and the support 12 are locked, and the frame 1 is kept in the folded state.

[0124] When the handle 111 is unfolded relative to the push rod 112, the traction rope is loosened, the first elastic member 43 releases the elastic potential energy, the sliding seat 41 slides upward relative to the push rod 112 under the elastic force of the first elastic member 43, the mounting seat 42 slides in the sliding groove 411, when the mounting seat 42 abuts against the end groove wall of the sliding groove 411, the sliding seat 41 drives the mounting seat 42 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 the frame 1 can be unfolded.

[0125] The folding and unfolding actions of the handle 111 and the push rod 112 and the movement 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.

[0126] Referring to Figure 6 and Figure 10 , the push rod 11 is provided with a second sliding hole 1122 communicating with the containing cavity 1120, and the hanging column is arranged in the second sliding hole 1122 and is in sliding cooperation with the second sliding hole 1122. When the sliding seat 41 slides in the containing cavity 1120 and drives the mounting seat 42 to move relative to the push rod 112, the hanging column slides in the second sliding hole 1122, the second sliding hole 1122 can limit the movement direction of the hanging column and the movement 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.

[0127] Further, referring to Figure 6 and Figure 10 , 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 inner side of the push rod 112, and the lock 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.

[0128] Exemplarily, the hanging column can be fixed to the mounting seat 42 by a fixing member such as a screw, is firmly connected, and is convenient to assemble. Alternatively, the hanging column and the mounting seat 42 can be integrally formed.

[0129] Optionally, referring to Figure 10 , one end of the hanging column extending out of the second sliding hole 1122 is provided with a limiting part 23, the limiting part 23 can limit the lock hook to be separated 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.

[0130] The folding and unfolding process of the stroller provided by the embodiment is as follows:

[0131] When folding the frame 1, as shown in Figure 6 and Figure 7 , the handle 111 is folded relative to the push rod body 112, in this process, referring to Figure 9 , the traction cable pulls the sliding seat 41 to move downward relative to the push rod body 112, and the first elastic member 43 is compressed and deformed, at the same time, the first elastic member 43 pushes the mounting seat 42 to drive the first locking member 2 (hanging column) to move downward. As shown in Figure 8 , when the push rod 11 and the support 12 are close to each other, 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.

[0132] When it is needed to unfold the frame 1, the handle 111 is unfolded relative to the push rod body 112, in this process, the traction cable is relaxed, the first elastic member 43 pushes the sliding seat 41 to drive the mounting seat 42 to move reversely, referring to the positions in Figure 7 and Figure 8 , the first locking member 2 (hanging column) moves upward with the mounting seat 42 to be separated from the second locking member 3 (hook), the support 12 is unlocked with the push rod 11, and the frame 1 can be smoothly unfolded.

[0133] Embodiment three

[0134] As shown in Figures 11 to 20 , the embodiment provides a stroller, which is different from the embodiments one and two in that:

[0135] Referring to Figure 11 , Figure 12 , Figure 13 and Figure 14 , the support 12 includes a front wheel support 121 and a rear wheel support 122 which can be close to each other and unfolded, the rear wheel support 122 is located between the front wheel support 121 and the push rod 11 after the frame 1 is folded, the push rod body 112 is provided with the first locking member 2, and the front wheel support 121 is provided with the second locking member 3. After the first locking member 2 is locked with the second locking member 3, the rear wheel support 122 can be limited between the push rod 11 and the front wheel support 121, so that the frame 1 can be stably kept in the folded state.

[0136] Referring to Figure 12 , Figure 13 and Figure 14 , the first locking member 2 includes a hook, and the second locking member 3 includes a hanging column, and the hook can be hooked on the hanging column. When the handle 111 and the push rod body 112 are folded, the hook moves towards the hanging column, and after the push rod 11 and the support 12 are close to each other, the hook is hooked on the hanging column to lock the frame 1 in the folded state.

[0137] Of course, in other embodiments, the first locking member 2 and the second locking member 3 can also be both in the form of a hook structure, and when the frame 1 is folded, the two hook structures are hooked together to lock the frame 1.

[0138] In the embodiment, as shown in Figure 11 and Figure 12 , the first locking member 2 is located at the lower region of the push rod rod body 112, so as to ensure that the first locking member 2 does not hinder the user from normally using the stroller when the frame 1 is in the unfolded state.

[0139] Referring to Figure 15 , Figure 16 , Figure 17 and Figure 18 , the first locking member 2 is rotationally arranged on the push rod 11. The transmission assembly 4 includes a traction cable (in combination with Figure 5 ), a sliding seat 41 and a swing member 44, the swing member 44 is rotationally connected to the push rod rod body 112, the first locking member 2 is fixedly connected to the swing member 44, the swing member 44 is provided with a first matching part, the sliding seat 41 is provided with a second matching part, and when the traction cable drives the sliding seat 41 to move, the first matching part cooperates with the second matching part to drive the swing member 44 to drive the first locking member 2 to rotate towards the locking position. In the process of folding the push handle 111 and the push rod rod body 112, while the traction cable pulls the sliding seat 41 to move, the first matching part and the second matching part interact with each other to make the swing member 44 rotate by a certain angle relative to the push handle 111 or the push rod rod body 112, and at the same time, the first locking member 2 rotates with the swing member 44 towards the locking position, thereby realizing the linkage of the folding action of the push handle 111 and the push rod 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 sliding seat 41 can be converted into the rotating motion of the swing member 44, thereby driving the first locking member 2 to rotate towards the locking position.

[0140] Optionally, referring to Figure 19 , the sliding seat 41 is provided with a second fixing hole 419, and the end of the traction cable is provided with a clamping column which is clamped and fixed in the second fixing hole 419, thereby realizing the connection between the traction cable and the sliding seat 41.

[0141] Optionally, referring to Figure 16 and Figure 18 , the first matching part includes a guide groove 441 arranged on the swing member 44, the extension direction of the guide groove 441 is arranged at an angle with the moving direction of the sliding seat 41, and the second matching part includes a driving column 414 arranged on the sliding seat 41, the driving column 414 is clamped and fixed in the guide groove 441 and is in sliding cooperation with the guide groove 441, and when the traction cable drives the sliding seat 41 to move, the driving column 414 can abut against the groove wall of the guide groove 441, so as to drive the swing member 44 to drive the first locking member 2 to rotate towards the locking position.

[0142] As shown in Figure 15 andFigure 16 As shown, at the initial position, the driving column 414 is located at the lower end of the guide slot 441, and the first locking member 2 is at the unlocked position. When the sliding seat 41 slides upward, as shown in Figure 17 and Figure 18 As shown, the driving column 414 slides upward in the guide slot 441. Since the extension direction of the guide slot 441 is at an angle with the moving direction of the sliding seat 41, that is, the guide slot 441 is inclined relative to the sliding seat 41, the driving column 414 can rotate the swing member 44 by pushing the slot wall of the guide slot 441 when it slides in the guide slot 441, thereby driving the first locking member 2 to rotate toward the locked position. As shown in Figure 18 When the driving column 414 moves to the upper end of the guide slot 441, the first locking member 2 rotates to the locked position. The swing member 44 is rotated by the sliding cooperation between the driving column 414 and the guide slot 441, which is reliable and stable in driving.

[0143] In other embodiments, the first cooperating part can also be a guide slope provided on the swing member 44, and the second cooperating part is a protruding structure provided on the sliding seat 41, which is in sliding cooperation with the guide slope, as long as it can rotate the swing member 44 by a certain angle when the sliding seat 41 moves.

[0144] Optionally, referring to Figure 15 and Figure 20 The push rod body 112 has a receiving cavity 1120, and the sliding seat 41 is movably arranged in the receiving cavity 1120. The outer wall of the push rod body 112 is provided with a third sliding hole 1123 communicating with the receiving cavity 1120, which extends along the moving direction of the sliding seat 41. The driving column 414 is arranged in the third sliding hole 1123 and the guide slot 441, and is in sliding cooperation with the third sliding hole 1123 and the guide slot 441. Hiding the sliding seat 41 in the receiving cavity 1120 of the push rod body 112 can make full use of the space of the push rod body 112, and at the same time make the appearance of the push rod body 112 more neat. The third sliding hole 1123 can limit the moving direction of the driving column 414 and the sliding seat 41, prevent the moving deviation, and ensure the smooth locking and unlocking process of the first locking member 2 and the second locking member 3. Exemplarily, the push rod body 112 is a tubular structure, and the tubular cavity of the push rod body 112 forms the above-mentioned receiving cavity 1120.

[0145] Optionally, referring to Figure 18 , Figure 19 and Figure 20The push rod body 112 has a receiving cavity 1120, a fixed seat 13 is arranged in the receiving cavity 1120, and the sliding 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 sliding seat 41, so that the sliding 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 19 and Figure 20 The fixed seat 13 is provided with a third fixing hole 137, and the push rod body 112 is provided with a through hole communicating with the receiving cavity 1120. A screw or a bolt is connected to the third fixing hole 137 and the corresponding through hole to fix the fixed seat 13 to the push rod body 112.

[0146] Referring to Figure 16 , Figure 19 and Figure 20 , the second elastic member 45 is arranged between the sliding seat 41 and the fixed seat 13. When the traction cable drives the sliding seat 41 to move, the second elastic member 45 is compressed and deformed, and the second elastic member 45 accumulates elastic potential energy. When the push handle 111 is unfolded relative to the push rod body 112, the second elastic member 45 drives the sliding seat 41 to drive the first locking member 2 to move towards the unlocking position. That is, during the unfolding of the stroller, the first locking member 2 can automatically disengage from the second locking member 3, realizing automatic unlocking and improving the operation convenience of the unfolding of the frame 1.

[0147] 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 sliding seat 41 is reduced or even removed, the second elastic member 45 releases the elastic potential energy, thereby driving the sliding seat 41 to slide reversely relative to the fixed seat 13. At the same time, the driving column 414 on the sliding seat 41 is in sliding cooperation with the guide groove 441, the driving column 414 pushes the groove wall of the guide groove 441 to reversely rotate the swing member 44, 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 disengaged from the second locking member 3, the limiting between the push rod 11 and the support 12 is removed, and the frame 1 can be smoothly unfolded. The arrangement of the second elastic member 45 makes the unfolding action of the push handle 111 and the push rod body 112 and the action of the first locking member 2 moving towards the unlocking position be linked, and the first locking member 2 is automatically unlocked from the second locking member 3 without manual operation.

[0148] Referring to Figure 17 , Figure 18 , Figure 19 and Figure 20The swing member 44 is rotationally connected to the push rod body 112 through the rotating shaft 46. The swing member 44 is provided with a connecting shaft 442 coaxial with the rotating shaft 46. The first locking member 2 is provided with a plug hole 24, and the connecting shaft 442 is inserted into the plug hole 24. The first locking member 2 is circumferentially limited to the swing member 44, so that the first locking member 2 and the swing member 44 cannot rotate relative to each other. The first locking member 2 and the swing member 44 rotate around the same axis, which can ensure that the swing member 44 drives the first locking member 2 to rotate synchronously, and the driving efficiency is higher.

[0149] Referring to Figure 18 、 Figure 19 and Figure 20 , the connecting shaft 442 is provided with an axial shaft hole 4421, and the rotating shaft 46 is inserted into the shaft hole 4421 and rotationally matched with the shaft hole 4421, so as to rotationally connect the swing member 44 and the push rod body 112. For example, the rotating shaft 46 can be fixedly connected with the fixing member on the fixing seat 13, so as to fix the rotating shaft 46 to the push rod body 112. For example, a third fixing hole 137 is arranged on the fixing seat 13 at a position corresponding to the rotating shaft 46, and a fixing member such as a screw is inserted through the third fixing hole 137 and the push rod body 112 and connected with the rotating shaft 46.

[0150] Optionally, one of the first locking member 2 and the swing member 44 is provided with a first limiting protrusion 443 spaced from the connecting shaft 442, and the other is provided with a first limiting groove, and the first limiting protrusion 443 is inserted into the first limiting groove. In this way, the relative rotation between the connecting shaft 442 and the plug hole 24 can be limited, and the first locking member 2 and the swing member 44 can be circumferentially limited, so that they can rotate synchronously around the same axis. In this embodiment, referring to Figure 19 , the swing member 44 is provided with the first limiting protrusion 443 on the side facing the first limiting member, and the first locking member 2 is provided with a first limiting groove (not shown) on the side facing the swing member 44.

[0151] In other embodiments, the first limiting groove can be arranged on the swing member 44, and the first limiting protrusion 443 can be arranged on the first locking member 2. Alternatively, a circumferential limiting structure can be arranged between the connecting shaft 442 and the plug hole 24 to fix the first locking member 2 and the swing member 44 together.

[0152] Optionally, referring to Figure 16 、 Figure 19 and Figure 20 , the fixing seat 13 is provided with a sliding space 131, and the sliding seat 41 is slidingly arranged in the sliding space 131. On the one hand, the sliding direction of the sliding seat 41 relative to the fixing seat 13 can be limited, and on the other hand, the thickness dimension of the sliding seat 41 and the fixing seat 13 as a whole can be reduced, so as to fully utilize the space in the accommodating cavity 1120 of the push rod body 112, and the structural layout is reasonable.

[0153] Referring to Figure 19 andFigure 20 One of the sliding seat 41 and the fixed seat 13 is provided with a first guide groove 132, and the other is provided with a first guide protrusion 415 which is in sliding fit with the first guide groove 132 in the moving direction of the sliding seat 41. The fit of the first guide protrusion 415 with the first guide groove 132 can limit the sliding direction of the sliding seat 41, improving the sliding stability of the sliding seat 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 415, and further limit the sliding stroke of the sliding seat 41 relative to the fixed seat 13, ensuring that the first locking piece 2 can be accurately switched to the unlocked position or the locked position.

[0154] In the embodiment, the first guide groove 132 is arranged at the bottom of the sliding space 131, and the first guide protrusion 415 is protruded on the sliding seat 41.

[0155] Referring to Figure 19 One of the sliding seat 41 and the fixed seat 13 is provided with a second guide groove 417, and the other is provided with a second guide protrusion 134 which is in sliding fit with the second guide groove 417. The fit of the second guide protrusion 134 with the second guide groove 417 further limits the moving direction of the sliding seat 41, ensuring the moving accuracy of the sliding seat 41 relative to the fixed seat 13.

[0156] In the embodiment, as shown in Figure 19 The fixed seat 13 is provided with two sliding grooves 133 which are in communication with the sliding space 131 and are spaced apart, and the second guide protrusion 134 is formed between the two sliding grooves 133. The sliding seat 41 is provided with two extending portions 416 which are spaced apart, and the second guide groove 417 which is closed at one end and open at the other end is formed between the two extending portions 416. When the second elastic piece 45 drives the sliding seat 41 to slide, the second guide protrusion 134 can be stopped at the closed end of the second guide groove 417, which can further limit the moving stroke of the sliding seat 41, ensuring that the first locking piece 2 can be stably kept in the unlocked position.

[0157] Optionally, referring to Figure 19 The fixed seat 13 is provided with a wiring groove 136 which is in communication with the sliding space 131, and the traction cable is led out through the wiring groove 136 after being connected with the sliding seat 41, ensuring that the traction cable can smoothly pull the sliding seat 41.

[0158] Referring to Figure 19 and Figure 20The second limiting groove 418 is arranged on the sliding seat 41, the second limiting protrusion 135 is arranged in the sliding space 131 of the fixing seat 13, one end of the second elastic element 45 is sleeved on the second limiting protrusion 135, and the other end is inserted into the second limiting groove 418. The second limiting groove 418 and the second limiting protrusion 135 can limit the extension direction of the second elastic element 45, so that the second elastic element 45 can stably drive the sliding seat 41 to move in the preset direction. For example, the second elastic element 45 is a spring.

[0159] Optionally, referring to Figure 19 and Figure 20 , the third elastic element 5 is arranged between the first locking element 2 and the push rod body 112, and the third elastic element 5 has a tendency to drive the first locking element 2 to rotate towards the locking position. That is, the elastic force of the second elastic element 45 is greater than the elastic force of the third elastic element 5, the first locking element 2 is in the unlocked position, the third elastic element 5 is in the energy storage state, when the traction rope pulls the sliding seat 41 to move, the second elastic element 45 is compressed, the third elastic element 5 releases the elastic potential energy, and assists in driving the first locking element 2 to rotate towards the locking position, and under the action of the elastic force of the third elastic element 5, the first locking element 2 can be stably kept in the state of being locked with the second locking element 3.

[0160] Referring to Figure 20 , the accommodating groove 25 is arranged on the first locking element 2, the insertion hole 24 is arranged on the bottom wall of the accommodating groove 25, the barrel portion 26 is arranged on the periphery of the insertion hole 24 in the accommodating groove 25, the third elastic element 5 is located in the accommodating groove 25 and is sleeved outside the barrel portion 26, one end of the third elastic element 5 is connected with the first locking element 2, and the other end is connected with the push rod body 112. When the first locking element 2 rotates around the rotating shaft 46 towards the unlocking position, the third elastic element 5 can be deformed to accumulate potential energy, and a torque is generated on the first locking element 2, so that the first locking element 2 has a tendency to rotate towards the locking position. The arrangement of the accommodating groove 25 can hide the third elastic element 5, and ensure that the first locking element 2 is overall beautiful.

[0161] For example, the third elastic element 5 is a torsion spring, one of the torsion arms of the torsion spring is connected with the push rod body 112, and the other torsion arm is connected with the first locking element 2.

[0162] Optionally, referring to Figure 19 and Figure 20 , the buffer pad 6 is arranged between the swing element 44 and the push rod body 112. The buffer pad 6 can reduce the friction between the swing element 44 and the push rod body 112 during rotation, thereby reducing the rotation resistance of the swing element 44 and improving the rotation smoothness of the swing element 44. At the same time, the buffer pad 6 can prevent noise generated by the friction between the swing element 44 and the push rod body 112. For example, the buffer pad 6 can be a rubber pad, a plastic pad with small friction, etc.

[0163] Referring toFigure 20 The buffer pad 6 is provided with a through hole 62 corresponding to the shaft hole 4421 on the swing member 44, so that the fixing member can pass through the through hole 62 and connect to the rotating shaft 46. 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.

[0164] The folding and unfolding process of the cart provided in this embodiment is as follows:

[0165] When folding the frame 1, as Figure 12 and Figure 13 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 15 and Figure 16 The traction cable pulls the sliding seat 41 upward relative to the push rod 112, while the drive column 414 moves the swing member 44, causing the first locking member 2 to rotate from the unlocked position to the locked position (e.g., Figure 17 and Figure 18 As shown), the sliding seat 41 compresses the second elastic element 45 to store energy. Figure 14 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.

[0166] 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 second elastic element 45 pushes the sliding seat 41 to move in the opposite direction, and at the same time the drive column 414 moves the swing element 44 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.

[0167] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A cart, characterized in that, The utility model relates to a folding stroller, comprising: a frame including a push rod and a support, the push rod including a push handle and a push rod body foldable and unfoldable relative to each other; the frame having 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; a first locking member movably arranged on the push rod and movable between a locking position and an unlocking position; a second locking member arranged on the support; a transmission assembly drivingly connecting the push rod and the first locking member, when the frame is switched to the folded state, the push handle can drive the first locking member to move to the locking position, and the first locking member is engaged with the second locking member to limit the push rod body from moving away from the support.

2. The cart of claim 1, wherein, the transmission assembly includes a sliding seat slidably arranged on the push rod in a preset direction, the first locking member is connected with the sliding seat, and when the push handle is folded relative to the push rod body, the sliding seat slides and drives the first locking member to move towards the locking position to be engaged with the second locking member; the transmission assembly includes a traction cable, two ends of the traction cable are connected with the push rod and the sliding seat respectively, and when the push handle is folded, the sliding seat is driven to slide through the traction cable.

3. The cart of claim 2, wherein, the first locking member is slidably arranged on the push rod; the transmission assembly further includes a mounting seat and a first elastic member, the first locking member is fixedly arranged on the mounting seat, the mounting seat is slidably arranged on the sliding seat in the preset direction, and the first elastic member is limited between the mounting seat and the sliding seat; when the push handle is folded relative to the push rod, the sliding seat drives the mounting seat to move relative to the push rod by extruding the first elastic member, so that the first locking member moves towards the locking position; and / or, when the push handle is unfolded relative to the push rod body, the first elastic member can drive the sliding seat to drive the mounting seat to move relative to the push rod, so that the first locking member is disengaged from the second locking member; and / or, the push handle is rotationally connected with the push rod body, a traction part is arranged at the rotational connection position of the push handle and the push rod body, one end of the traction cable is connected with the traction part, and the push handle can drive the traction part to rotate relative to the push rod body to tension the traction cable.

4. The cart of claim 3, wherein, the push rod has a receiving cavity, the sliding seat and the mounting seat are located in the receiving cavity; the first locking member includes a locking hook, the second locking member includes a hanging column arranged on the support, one end of the locking 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 locking hook can be hooked on the hanging column; or the first locking member includes a hanging column, the second locking member includes a locking 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 extends out of the receiving cavity and can be movably clamped into a hook groove of the locking hook; and / or, ​ The sliding 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 first elastic member is located in the sliding groove, and one end of the first elastic member abuts against a groove wall of the sliding groove and the other end abuts against the mounting seat; And / or, The sliding seat is provided with a first positioning protrusion, the mounting seat is provided with a second positioning protrusion, one end of the first elastic member is sleeved on the first positioning protrusion, and the other end is sleeved on the second positioning protrusion.

5. The cart of claim 4, wherein, When the first locking member is a lock hook and the second locking member is a hanging column, the push rod is provided with a first sliding hole communicating 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 first sliding hole; When the first locking member is a hanging column and the second locking member is a lock hook, the push rod is provided with a second sliding hole communicating with the accommodating cavity, and the hanging column is arranged in the second sliding hole and is in sliding fit with the second sliding hole.

6. The cart of claim 2, wherein, The first locking member is rotationally arranged on the push rod; The transmission assembly further comprises a swing member rotationally connected to the push rod, the first locking member is fixedly connected with the swing member, the swing member is provided with a first matching part, the sliding seat is provided with a second matching part, and when the traction cable drives the sliding seat to slide, the first matching part cooperates with the second matching part to drive the swing member to rotate the first locking member towards the locking position; and / or, The push rod body has an accommodating cavity, the accommodating cavity is provided with a fixing seat, the sliding seat is slidably arranged in the fixing seat and located in the accommodating cavity; The transmission assembly further comprises a second elastic member arranged between the sliding seat and the fixing seat, the second elastic member is compressed and deformed when the traction cable drives the sliding seat to move, and the second elastic member drives the sliding seat to rotate the first locking member towards the unlocking position when the push handle is unfolded relative to the push rod body.

7. The cart of claim 6, wherein, 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 sliding seat, the second matching part comprises a driving column arranged on the sliding seat, the driving column is arranged in the guide groove and is in sliding fit with the guide groove, and when the traction cable drives the sliding seat to move, the driving column can abut against the groove wall of the guide groove to drive the swing member to rotate the first locking member towards the locking position; And / or, the swing member is rotationally connected to the push 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 arranged in the insertion hole, and the first locking member is circumferentially limited in the swing member; And / or, the third elastic member is arranged between the first locking member and the push rod body, and the third 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 body.

8. The cart of claim 7, wherein, An axial hole is formed in the connecting shaft, the rotating shaft is arranged in the axial hole and is 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 slot, the first limiting protrusion is inserted into the first limiting slot.

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

10. The cart of any of claims 1-9, wherein, The support includes front wheel supports and rear wheel supports that can be relatively close and expanded, the push rod rod body is provided with the first locking member, and the front wheel support or the rear wheel support is provided with the second locking member.

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