A foldable stroller

Abstract

The utility model relates to the field of cart technology, concretely relates to a foldable cart, including the mutually rotatable setting of push handle, front support, rear support, seat pocket and backrest, still include first connecting piece and locking assembly, wherein, both ends of first connecting piece are rotatable in front support with rear support, locking assembly includes: first locking mechanism, part is in any one of front support with rear support, part is in push handle, as the mechanism for locking any one of front support with rear support and push handle, second locking mechanism, part is in seat pocket, part is in backrest, part is in push handle, as the mechanism for locking seat pocket with backrest and for unlocking first locking mechanism, the application reduces the workload of the cart in the folding stage to improve the travel efficiency and the use experience of the user.

Description

Technical Field

[0001] This utility model relates to the field of trolley technology, specifically to a foldable trolley. Background Technology

[0002] In modern parenting, strollers have become essential items for many families, serving as a crucial tool for ensuring the safety and comfort of infants during outings. Strollers with folding seats, in particular, are highly favored by parents due to their combination of comfortable seating and convenient storage. These strollers provide a stable and comfortable riding space for babies, while folding up significantly reduces their footprint when not in use, making them easy to store and carry, thus meeting the diverse needs of family outings.

[0003] Currently, the folding operation of most strollers with folding seats on the market is usually quite cumbersome. Generally, users need to fold the seat first, such as adjusting the backrest angle, and then operate the frame, such as flipping the folding switch on the frame or pressing the relevant buckles, to fold the frame and finally achieve the stroller's fully folded state.

[0004] This method of folding the seat first and then the frame involves many steps and is complicated to operate, reducing travel efficiency and affecting the user experience.

[0005] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0006] The purpose of this invention is to provide a foldable trolley.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A foldable trolley includes a push handle, a front support, a rear support, a seat, and a backrest that are rotatably arranged with each other.

[0009] It also includes a first connector and a locking assembly;

[0010] Wherein, the two ends of the first connector are respectively rotatably mounted on the front bracket and the rear bracket;

[0011] The locking component includes:

[0012] The first locking mechanism is partially located in either the front support or the rear support, and partially located in the push handle, serving as a mechanism for locking either the front support or the rear support and the push handle.

[0013] The second locking mechanism is partially located in the seat pocket, partially located in the backrest, and partially located in the push handle, serving as a mechanism for locking the seat pocket and the backrest and for unlocking the first locking mechanism.

[0014] In some embodiments, the foldable trolley includes armrests that are rotatably configured relative to the push handle, front support, rear support, seat, and backrest.

[0015] This application describes the seat, backrest, and the second connecting member described below as rotating coaxially, but does not limit the three to rotating non-coaxially.

[0016] The front support will be described in the following description. The push handle, rear support, seat, and backrest will be described in the same way. The front support can be understood as a support assembly. It may only include the support structure or it may include the support structure and the roller structure. The shape of the support structure is not limited. For one specific configuration of the front support, please refer to the attached figure.

[0017] The push handle, front support, rear support, seat, and backrest are existing structures. Their specific functions can be referenced from existing ones. For example, the user can sit on the seat and the backrest supports the user's back.

[0018] In the above solution, the first locking mechanism can first lock the push handle to restrict its folding and storage during use. Secondly, the first locking mechanism can directly lock either the front bracket or the rear bracket. With the help of the first connector, once one of the front bracket and the rear bracket is locked, the other one is also locked. This avoids the need to set up two locking mechanisms to lock the front bracket and the rear bracket, thereby simplifying the structure and reducing costs.

[0019] The second locking mechanism is located between the seat, backrest, and push handle to lock the seat and backrest.

[0020] The second locking mechanism is unique in that it can cause the first locking mechanism to change from a locked state to an unlocked state, thereby eliminating an unlocking step, reducing the workload of the trolley during the folding stage, and improving travel efficiency and user experience.

[0021] It should be noted that the second locking mechanism can cause the first locking mechanism to change from a locked state to an unlocked state under the action of external force, such as by means of a seat or backrest. This application does not limit this.

[0022] In a further technical solution, the first locking mechanism includes a first docking component and a second docking component;

[0023] The first docking member is movably disposed on either the front bracket or the rear bracket, and the second docking member is fixedly disposed on the push handle; or, the first docking member is fixedly disposed on either the front bracket or the rear bracket, and the second docking member is movably disposed on the push handle.

[0024] The first locking mechanism is in a locked state:

[0025] In the locked state, the first docking member engages with the second docking member to lock either the front bracket or the rear bracket and the push handle.

[0026] When the first locking mechanism is in the locked state, it locks either the front bracket or the rear bracket and the push handle, which is achieved by the first docking part docking with the second docking part.

[0027] This embodiment involves various variations, such as the first docking member being located on the front support or the rear support, or the first docking member being fixedly located on the front support or movable on the front support. By providing a variety of options, it meets the diverse needs of users.

[0028] In a further technical solution, the first docking member is movably disposed on the rear bracket, and the second docking member is fixedly disposed on the push handle;

[0029] The push handle has a groove, which constitutes the second docking part.

[0030] Here, we will use the first connecting piece as the connecting rod for explanation. The connecting rod is connected to the rear bracket. When the connecting rod is inserted into the groove, the rear bracket and the push handle cannot rotate relative to each other, thus restricting each other and locking the rear bracket and the push handle.

[0031] This embodiment clarifies a method for the first locking mechanism to achieve locking under certain circumstances, which has a simple structure and quick locking.

[0032] A further technical solution also includes a third reset member, at least one end of which acts on the first docking member or the second docking member, as a component for facilitating docking between the first docking member and the second docking member.

[0033] The third reset component causes the first docking component to dock with the second docking component, thereby automatically locking the corresponding structure by the first locking mechanism during the use of the trolley, reducing the amount of operation required by the user.

[0034] In a further technical solution, the second locking mechanism includes:

[0035] A second connector is provided on the push handle;

[0036] A third connector is provided on the seat pocket;

[0037] The fourth connector is located on the backrest;

[0038] The second connector has a first recess corresponding to the third connector and a second recess corresponding to the fourth connector.

[0039] In the second locking mechanism, the seat pocket is locked by inserting the third connector into the first recess.

[0040] In the second locking mechanism, the backrest is locked by inserting the fourth connector into the second recess.

[0041] This embodiment further clarifies the method of locking the seat and backrest, and restricts the folding of the seat and backrest during the use of the stroller through the cooperation of multiple structures, so as to ensure the stability of the stroller during use.

[0042] In a further technical solution, the third connector includes:

[0043] The first locking block is provided corresponding to the first recessed portion;

[0044] The first traction part is connected at both ends to the first locking block and the seat pocket, respectively;

[0045] The fourth connector includes:

[0046] The second locking block is provided corresponding to the second recessed portion;

[0047] The second traction part is connected at both ends to the second locking block and the backrest, respectively.

[0048] The third connector is described here. For a description of the fourth connector, please refer to the description of the third connector, as follows:

[0049] The seat can rotate around a certain axis of rotation. When the first locking block is inserted into the first recess, the seat remains stationary relative to the second connecting member, ensuring that the seat provides stable support to the user during the use of the trolley.

[0050] When the first traction part pulls the first locking block to separate it from the first recessed part, the seat unlocks.

[0051] In a further technical solution, the second locking mechanism also includes:

[0052] The first reset member has one end acting on the third connector and the other end acting on the seat or the second connector;

[0053] The second reset member has one end acting on the fourth connector and the other end acting on the backrest or the second connector.

[0054] The first reset component is described here, and the description of the second reset component is the same as that of the first reset component, as follows: The first reset component causes the third connector to insert into the first recess, so that the second locking mechanism can automatically lock the seat during the use of the trolley, further reducing the amount of operation required by the user and improving the user experience.

[0055] In a further technical solution, the second locking mechanism also includes an unlocking component that is movable on the second connector;

[0056] At least one of the seat pocket and the backrest can be used by the unlocking mechanism to cause the first docking member to separate from the second docking member.

[0057] After the first docking part and the second docking part are docked, the first locking mechanism locks the corresponding structure. This embodiment is described with the bracket and push handle locked by the first locking mechanism.

[0058] Both the seat and the backrest can rotate around a certain axis of rotation. When either of them is rotated and stored, the first docking part and the second docking part can be separated by driving the unlocking part, thereby eliminating the step of unlocking the first locking mechanism. This linkage operation reduces the amount of operation and operation time for the user during the folding stage of the stroller, improving the user experience and folding efficiency.

[0059] A further technical solution is provided with a first inclined surface on the seat, a second inclined surface on the backrest, and a third inclined surface corresponding to the first inclined surface and a fourth inclined surface corresponding to the second inclined surface on the unlocking component;

[0060] The foldable stroller has a first folded state and a second folded state:

[0061] In the first folded state, the seat pocket rotates, causing the first inclined surface and the third inclined surface to interact, thereby causing the unlocking member to move along the extension direction of the rotation axis of the seat pocket;

[0062] In the second folded state, the backrest rotates, causing the second inclined surface to interact with the fourth inclined surface, which in turn causes the unlocking member to move along the extension direction of the rotation axis of the backrest.

[0063] Through the action of the first and third inclined surfaces, the seat pocket causes the unlocking component to move along the extension direction of the seat pocket's rotation axis during rotation, while the backrest is aided by the second and fourth inclined surfaces. The following example illustrates the action of the seat pocket on the unlocking component: When the seat pocket is folded, it rotates, and through the compression of the first inclined surface against the third inclined surface, the third inclined surface moves horizontally, allowing the unlocking component to approach the first locking mechanism and thus causing the first and second mating parts to separate.

[0064] This embodiment uses an inclined plane to convert rotational motion into horizontal motion, omitting the transmission structure between the seat and the unlocking mechanism, thus simplifying the structure. The simple structure also ensures the continuous operation of the above-mentioned transmission process.

[0065] In a further technical solution, the unlocking component includes a horizontally moving part and a vertically moving part;

[0066] The horizontally movable part is movably disposed on the second connecting member;

[0067] The third inclined surface and the fourth inclined surface are provided on the horizontal moving part;

[0068] The horizontally moving part is provided with a fifth inclined surface;

[0069] The vertical moving part can move vertically relative to the horizontal moving part;

[0070] The vertically moving part is provided with a sixth inclined surface corresponding to the fifth inclined surface;

[0071] In either the first or second folded state, the horizontal moving part moves horizontally, causing the fifth inclined surface to interact with the sixth inclined surface, thereby causing the vertical moving part to move vertically.

[0072] Here is a specific example to aid understanding: During the rotation of the seat, the horizontal moving part moves along the extension direction of the seat's rotation axis. Through the compression of the fifth inclined plane against the sixth inclined plane, the horizontal moving part pushes the vertical moving part downward, and the vertical moving part causes the first docking piece to separate from the second docking piece.

[0073] With the configuration of this embodiment, when the first docking member and the second docking member are separated, one of them can be moved vertically. Taking the first docking member being moved into the rear support as an example, the first docking member does not need to move along the thickness direction of the rear support, thus reducing the space occupied by the first docking member in the thickness direction of the rear support.

[0074] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0075] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0076] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0077] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0078] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0079] The working principle and advantages of this utility model are as follows:

[0080] The first locking mechanism can first lock the push handle to restrict its folding and storage during use. Secondly, the first locking mechanism can directly lock either the front bracket or the rear bracket. Furthermore, with the help of the first connecting member, once one of the front bracket or the rear bracket is locked, the other is also locked. This avoids the need to set up two locking mechanisms to lock the front bracket and the rear bracket, thereby simplifying the structure and reducing costs.

[0081] The second locking mechanism is located between the seat, backrest, and push handle to lock the seat and backrest.

[0082] This application can use a second locking mechanism to cause the first locking mechanism to change from a locked state to an unlocked state, thereby eliminating an unlocking step, reducing the workload of the trolley during the folding stage, and improving travel efficiency and user experience. Attached Figure Description

[0083] Figure 1 This is a schematic diagram of the structure of the foldable trolley according to an embodiment of the present invention;

[0084] Figure 2 for Figure 1 Side view;

[0085] Figure 3 This is one of the partial structural schematic diagrams of the foldable trolley according to an embodiment of the present utility model;

[0086] Figure 4 This is a second partial structural schematic diagram of the foldable trolley according to an embodiment of the present utility model;

[0087] Figure 5 This is a schematic diagram of a foldable trolley in the folding process according to an embodiment of the present invention;

[0088] Figure 6 This is a schematic diagram of the structure of the seat, backrest, armrests, and surrounding parts of the three components in an embodiment of this utility model.

[0089] Figure 7 for Figure 6 A schematic diagram of a state after the middle structure has been folded;

[0090] Figure 8 This is one of the exploded views of a partial structure of the foldable trolley according to an embodiment of the present invention;

[0091] Figure 9 This is the second exploded view of a partial structure of the foldable trolley according to an embodiment of the present invention;

[0092] Figures 10-13 This is a schematic diagram of the foldable trolley after it has been folded according to an embodiment of the present invention;

[0093] Figures 14-16 This is a schematic diagram showing the positional changes of the first and third inclined surfaces in an embodiment of the present invention;

[0094] Figures 17-19 This is a schematic diagram showing the positional changes of the second and fourth inclined surfaces in an embodiment of the present invention.

[0095] In the attached diagrams: 1. Push handle; 2. Front support; 3. Rear support; 4. Seat; 41. First inclined surface; 5. Backrest; 51. Second inclined surface; 6. First connecting piece; 71. First locking mechanism; 711. First docking piece; 712. Second docking piece; 72. Second locking mechanism; 721. Second connecting piece; 7211. First recess; 7212. Second recess; 722. Third connecting piece; 7221. First lock 7222, First traction part; 723, Fourth connecting part; 7231, Second locking block; 7232, Second traction part; 724, First reset part; 725, Second reset part; 726, Unlocking part; 7261, Third inclined surface; 7262, Fourth inclined surface; 7263, Horizontal moving part; 7264, Vertical moving part; 7265, Fifth inclined surface; 7266, Sixth inclined surface; 8, Handrail; 9, Third reset part. Detailed Implementation

[0096] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0097] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0098] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0099] See Figures 1-19 A foldable trolley includes a handle 1, a front support 2, a rear support 3, a seat 4, and a backrest 5 that are rotatably arranged with each other.

[0100] It also includes the first connector 6 and the locking assembly;

[0101] Wherein, the two ends of the first connector 6 are respectively rotatably disposed on the front bracket 2 and the rear bracket 3;

[0102] The locking component includes:

[0103] The first locking mechanism 71 is partially disposed in either the front bracket 2 or the rear bracket 3, and partially disposed in the push handle 1, serving as a mechanism for locking either the front bracket 2 or the rear bracket 3 and the push handle 1.

[0104] The second locking mechanism 72 is partially located on the seat pocket 4, partially on the backrest 5, and partially on the push handle 1, serving as a mechanism for locking the seat pocket 4 and the backrest 5 and for unlocking the first locking mechanism 71.

[0105] In some embodiments, the foldable trolley includes an armrest 8 that is rotatably configured relative to the push handle 1, the front support 2, the rear support 3, the seat 4, and the backrest 5.

[0106] This application describes the seat 4, backrest 5, and the second connecting member 721 described below as rotating coaxially, but does not limit the three to rotating non-coaxially. The seat 4 can be understood as the seat.

[0107] The front support 2 will be described in the following description. The push handle 1, rear support 3, seat 4 and backrest 5 will be described in the same way. The front support 2 can be understood as a support assembly. It may only include the support structure or it may include the support structure and the roller structure. The shape of the support structure is not limited. For one specific configuration of the front support 2, please refer to the attached figure.

[0108] The push handle 1, front support 2, rear support 3, seat 4 and backrest 5 are existing structures. Their specific functions can be referred to the existing ones. For example, the user can sit on the seat 4 and the backrest 5 supports the user's back.

[0109] In the above scheme, the first locking mechanism 71 can first lock the push handle 1 to restrict its folding and storage during use. Secondly, the first locking mechanism 71 can directly lock either the front bracket 2 or the rear bracket 3. With the help of the first connecting member 6, once one of the front bracket 2 and the rear bracket 3 is locked, the other one is also locked. This avoids setting two locking mechanisms to lock the front bracket 2 and the rear bracket 3, thereby simplifying the structure and reducing costs.

[0110] The second locking mechanism 72 is located between the seat pocket 4, the backrest 5 and the push handle 1, thereby locking the seat pocket 4 and the backrest 5.

[0111] The second locking mechanism 72 is special in that it can cause the first locking mechanism 71 to change from a locked state to an unlocked state, thereby eliminating an unlocking step, reducing the workload of the trolley during the folding stage, and improving travel efficiency and user experience.

[0112] It should be noted that the second locking mechanism 72 can cause the first locking mechanism 71 to change from a locked state to an unlocked state under the action of external force, such as by means of the seat 4 or the backrest 5. This application does not limit this.

[0113] See the image below for the folded state of the stroller. Figures 10-13 .

[0114] See Figure 3 In this embodiment, the first locking mechanism 71 includes a first docking member 711 and a second docking member 712;

[0115] The first docking member 711 is movably disposed on either the front support 2 or the rear support 3 and the second docking member 712 is fixedly disposed on the push handle 1; or, the first docking member 711 is fixedly disposed on either the front support 2 or the rear support 3 and the second docking member 712 is movably disposed on the push handle 1.

[0116] The first locking mechanism 71 is in a locked state:

[0117] In the locked state, the first docking member 711 docks with the second docking member 712 to lock either the front bracket 2 or the rear bracket 3 and the push handle 1.

[0118] When the first locking mechanism 71 is in the locked state, it locks either the front bracket 2 or the rear bracket 3 and the push handle 1, which is achieved by the first docking part 711 docking with the second docking part 712.

[0119] This embodiment involves various transformations, such as the first docking member 711 being disposed on the front bracket 2 or the rear bracket 3, or the first docking member 711 being fixedly disposed on the front bracket 2 or movablely disposed on the front bracket 2. By providing a variety of options, it meets the diverse needs of users.

[0120] See Figure 3 In this embodiment, the first docking member 711 is movably disposed on the rear bracket 3, and the second docking member 712 is fixedly disposed on the push handle 1;

[0121] The push handle 1 has a groove, which constitutes the second docking member 712.

[0122] Here, we will use the first docking part 711 as the docking rod for explanation. The docking rod is connected to the rear bracket 3. When the docking rod is inserted into the groove, the rear bracket 3 and the push handle 1 cannot rotate relative to each other, thereby restricting each other and locking the rear bracket 3 and the push handle 1.

[0123] In some embodiments, the first docking member 711 is movably disposed on the front bracket 2.

[0124] This embodiment clarifies a method by which the first locking mechanism 71 achieves locking under certain circumstances. The structure is simple and the locking is quick.

[0125] The insertion groove of the first mating part 711 generally refers to the insertion groove of a portion of the first mating part 711.

[0126] After the first docking piece 711 is inserted into the groove, it can move along the thickness direction of the rear support 3 to separate from the groove, or it can move vertically to separate from the groove. This embodiment does not limit this. The shape of the groove can be adjusted according to different separation situations. This embodiment also does not limit this.

[0127] See Figures 8-9 In this embodiment, a third reset member 9 is also included, at least one end of which acts on the first docking member 711 or the second docking member 712, as a component for facilitating docking between the first docking member 711 and the second docking member 712.

[0128] In some embodiments, the third reset element 9 is configured as a reset spring.

[0129] The third reset member 9 causes the first docking member 711 to dock with the second docking member 712, so that the first locking mechanism 71 can automatically lock the corresponding structure during the use of the trolley, reducing the amount of operation required by the user.

[0130] The specific connection settings of the third reset member 9 can be adjusted according to the actual situation to achieve the above purpose. For example, the two ends of the third reset member 9 can be connected to the first docking member 711 and the second docking member 712 respectively.

[0131] See Figures 4-9 In this embodiment, the second locking mechanism 72 includes:

[0132] The second connector 721 is provided on the push handle 1;

[0133] The third connector 722 is provided on the seat pocket 4;

[0134] The fourth connector 723 is provided on the backrest 5;

[0135] The second connector 721 is provided with a first recess 7211 corresponding to the third connector 722 and a second recess 7212 corresponding to the fourth connector 723.

[0136] In some embodiments, the second connector 721, the third connector 722, and the fourth connector 723 have the same axis of rotation.

[0137] In some embodiments, the second connector 721 is integrated with the push handle 1, in which case the second connector 721 is considered a component of the push handle 1.

[0138] The description of structural connections and movement settings in this application is emphasized here. Taking the third connector 722 as an example, it is as follows: The third connector 722 is provided on the seat 4, and the two can be detachably connected (such as by a threaded connection) or non-detachably connected (such as by welding); even if it is not emphasized here that the third connector 722 can move relative to the seat 4, it cannot be assumed that the two remain stationary; even if it is mentioned that the third connector 722 can move relative to the seat 4, it cannot be assumed that only the third connector 722 as a whole can move relative to the seat 4, or only a part of the third connector 722 can move relative to the seat 4.

[0139] In the second locking mechanism 72, the seat pocket 4 is locked by inserting the third connector 722 into the first recess 7211.

[0140] In the second locking mechanism 72, the backrest 5 is locked by inserting the fourth connector 723 into the second recess 7212.

[0141] This embodiment further clarifies the method of locking the seat 4 and backrest 5. By cooperating with multiple structures, the seat 4 and backrest 5 are restricted from folding during the use of the stroller, thus ensuring the stability of the stroller during use.

[0142] See Figures 8-9 In this embodiment, the third connector 722 includes:

[0143] The first locking block 7221 is provided corresponding to the first recessed portion 7211;

[0144] The first traction part 7222 is connected at both ends to the first locking block 7221 and the seat 4, respectively.

[0145] The fourth connector 723 includes:

[0146] The second locking block 7231 is provided corresponding to the second recessed portion 7212;

[0147] The second traction part 7232 is connected at both ends to the second locking block 7231 and the backrest 5, respectively.

[0148] The third connector 722 will be described here. For the description of the fourth connector 723, please refer to the description of the third connector 722, as follows:

[0149] The seat 4 can rotate around a certain axis of rotation. When the first locking block 7221 is inserted into the first recess 7211, the seat 4 remains stationary relative to the second connecting member 721, ensuring that the seat 4 stably supports and serves the user during the use of the trolley.

[0150] When the first traction part 7222 pulls the first locking block 7221 to separate it from the first recessed part 7211, the seat 4 is unlocked;

[0151] In some embodiments, the seat 4 has a handle to which a first traction part 7222 is connected;

[0152] In some embodiments, the first traction part 7222 is configured as a traction line;

[0153] In some embodiments, at least a portion of the first traction portion 7222 is located inside the seat pocket 4.

[0154] See Figures 8-9 In this embodiment, the second locking mechanism 72 further includes:

[0155] The first reset member 724 has one end acting on the third connector 722 and the other end acting on the seat 4 or the second connector 721;

[0156] The second reset member 725 has one end acting on the fourth connector 723 and the other end acting on the backrest 5 or the second connector 721.

[0157] The first reset element 724 will be described here. For the description of the second reset element 725, please refer to the description of the first reset element 724, as follows:

[0158] In some embodiments, the first reset member 724 is configured as a reset spring;

[0159] The first reset member 724 causes the third connector 722 to insert into the first recess 7211, thereby automatically locking the second locking mechanism 72 onto the seat pocket 4 during the use of the trolley, further reducing the amount of operation required by the user and improving the user experience.

[0160] See Figures 4-9 In this embodiment, the second locking mechanism 72 further includes an unlocking member 726 that is movable to the second connector 721;

[0161] At least one of the seat pocket 4 and the backrest 5 can be used by the unlocking member 726 to cause the first docking member 711 to separate from the second docking member 712.

[0162] After the first docking part 711 docks with the second docking part 712, the first locking mechanism 71 locks the corresponding structure. This embodiment is described with the bracket 3 and the push handle 1 locked by the first locking mechanism 71.

[0163] Both the seat 4 and the backrest 5 can rotate around a certain axis of rotation. When either of them is rotated and stored, the first docking part 711 and the second docking part 712 can be separated by driving the unlocking part 726, thereby eliminating the step of unlocking the first locking mechanism 71. This linkage operation reduces the amount of operation and operation time of the user during the folding stage of the stroller, and improves the user experience and folding efficiency.

[0164] This application describes the situation where the seat pocket 4 and the backrest 5 rotate in opposite directions after being unlocked.

[0165] See Figures 8-9 In this embodiment, the seat 4 is provided with a first inclined surface 41, the backrest 5 is provided with a second inclined surface 51, and the unlocking member 726 is provided with a third inclined surface 7261 corresponding to the first inclined surface 41 and a fourth inclined surface 7262 corresponding to the second inclined surface 51.

[0166] The foldable stroller has a first folded state and a second folded state:

[0167] In the first folded state, the seat pocket 4 rotates, causing the first inclined surface 41 and the third inclined surface 7261 to interact, causing the unlocking member 726 to move along the extension direction of the rotation axis of the seat pocket 4.

[0168] In the second folded state, the backrest 5 rotates, causing the second inclined surface 51 to interact with the fourth inclined surface 7262, which in turn causes the unlocking member 726 to move along the extension direction of the rotation axis of the backrest 5.

[0169] The direction of the rotation axis of the seat 4 and the direction of the rotation axis of the backrest 5 can be regarded as the thickness direction of the rear support 3.

[0170] Regarding the unlocking member 726, it should be assumed that at least a portion of the unlocking member 726 is movable along the extension direction of the rotation axis of the seat 4, and the portion of the unlocking member 726 is not restricted from moving in other directions. The unlocking member 726 can be configured with a reset structure to achieve individual reset of the unlocking member 726 (as described below, a reset structure is provided on the vertical moving part 7264), specifically referring to the reset members in this application.

[0171] Through the action of the first inclined surface 41 and the third inclined surface 7261, the seat pocket 4 causes the unlocking member 726 to move along the extension direction of the rotation axis of the seat pocket 4 during rotation, while the backrest 5 is aided by the second inclined surface 51 and the fourth inclined surface 7262. The following is an example of the action process of the seat pocket 4 on the unlocking member 726: When the seat pocket 4 is folded, it rotates. Through the compression of the first inclined surface 41 on the third inclined surface 7261, the third inclined surface 7261 moves horizontally, allowing the unlocking member 726 to approach the first locking mechanism 71 and causing the first docking member 711 to separate from the second docking member 712.

[0172] This embodiment uses an inclined plane to convert rotational motion into horizontal motion, omitting the transmission structure between the seat 4 and the unlocking component 726, thus simplifying the structure. The simple structure also ensures the continuous operation of the above transmission process.

[0173] See Figures 8-9 In this embodiment, the unlocking member 726 includes a horizontal moving part 7263 and a vertical moving part 7264;

[0174] The horizontally moving part 7263 is movably disposed on the second connecting member 721;

[0175] The third inclined surface 7261 and the fourth inclined surface 7262 are provided on the horizontal moving part 7263;

[0176] The horizontal moving part 7263 is provided with a fifth inclined surface 7265;

[0177] The vertical moving part 7264 can move vertically relative to the horizontal moving part 7263;

[0178] The vertical moving part 7264 is provided with a sixth inclined surface 7266 corresponding to the fifth inclined surface 7265;

[0179] In either the first or second folded state, the horizontal moving part 7263 moves horizontally, causing the fifth inclined surface 7265 and the sixth inclined surface 7266 to interact, thereby causing the vertical moving part 7264 to move vertically.

[0180] The vertical moving part 7264 can be provided on the push handle 1, the front bracket 2 or the rear bracket 3. This embodiment does not limit this, as long as it meets the requirements of this embodiment.

[0181] Here is a specific example to aid understanding: During the rotation of the seat 4, the horizontal moving part 7263 moves along the extension direction of the rotation axis of the seat 4. Through the compression of the sixth inclined surface 7266 by the fifth inclined surface 7265, the horizontal moving part 7263 pushes the vertical moving part 7264 downward, and the vertical moving part 7264 causes the first docking member 711 to separate from the second docking member 712.

[0182] With the configuration of this embodiment, when the first docking member 711 and the second docking member 712 are separated, one of them can move vertically. Taking the first docking member 711 moving into the rear support 3 as an example, the first docking member 711 does not need to move along the thickness direction of the rear support 3, thus reducing the space occupied by the first docking member 711 in the thickness direction of the rear support 3.

[0183] The working principle of one specific embodiment of this application is as follows:

[0184] The first traction part 7222 drives the first locking block 7221 to separate it from the first recess 7211, and the second traction part 7232 drives the second locking block 7231 to separate it from the second recess 7212. At this time, the seat pocket 4 and the backrest 5 are unlocked.

[0185] The seat 4 rotates toward the backrest 5, or the backrest 5 rotates toward the seat 4, pressing against the corresponding inclined surface (such as the third inclined surface 7261) on the horizontal moving part 7263 through its own inclined surface (such as the first inclined surface 41), so that the horizontal moving part 7263 moves in the horizontal direction.

[0186] The fifth inclined surface 7265 on the horizontal moving part 7263 presses against the sixth inclined surface 7266 on the vertical moving part 7264, causing the vertical moving part 7264 to move vertically and causing the first docking member 711 to separate from the second docking member 712, thereby unlocking the push handle 1, the front bracket 2 and the rear bracket 3.

[0187] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A foldable trolley, characterized in that: It includes a push handle (1), a front bracket (2), a rear bracket (3), a seat (4), and a backrest (5) that are rotatably arranged with each other; It also includes a first connector (6) and a locking assembly; Wherein, the two ends of the first connector (6) are respectively rotatably disposed on the front bracket (2) and the rear bracket (3). The locking component includes: The first locking mechanism (71) is partially located in either the front bracket (2) or the rear bracket (3) and partially located in the push handle (1), serving as a mechanism for locking either the front bracket (2) or the rear bracket (3) and the push handle (1); The second locking mechanism (72) is partially located in the seat pocket (4), partially located in the backrest (5), and partially located in the push handle (1), serving as a mechanism for locking the seat pocket (4) and the backrest (5) and for unlocking the first locking mechanism (71).

2. The foldable trolley according to claim 1, characterized in that: The first locking mechanism (71) includes a first docking member (711) and a second docking member (712); The first docking member (711) is movably disposed on either the front support (2) or the rear support (3), and the second docking member (712) is fixedly disposed on the push handle (1); or, the first docking member (711) is fixedly disposed on either the front support (2) or the rear support (3), and the second docking member (712) is movably disposed on the push handle (1). The first locking mechanism (71) is in a locked state: In the locked state, the first docking member (711) docks with the second docking member (712) to lock either the front bracket (2) or the rear bracket (3) and the push handle (1).

3. A foldable trolley according to claim 2, characterized in that: The first docking member (711) is movably disposed on the rear bracket (3), and the second docking member (712) is fixedly disposed on the push handle (1); The push handle (1) is provided with a groove, which constitutes the second docking member (712).

4. A foldable trolley according to claim 2, characterized in that: It also includes a third reset member (9), at least one end of which acts on the first docking member (711) or the second docking member (712) as a component for facilitating docking of the first docking member (711) and the second docking member (712).

5. A foldable trolley according to claim 2, characterized in that: The second locking mechanism (72) includes: The second connector (721) is provided on the push handle (1); The third connector (722) is provided on the seat pocket (4); The fourth connector (723) is provided on the backrest (5); The second connector (721) is provided with a first recess (7211) corresponding to the third connector (722) and a second recess (7212) corresponding to the fourth connector (723).

6. A foldable trolley according to claim 5, characterized in that: The third connector (722) includes: The first locking block (7221) is provided corresponding to the first recess (7211); The first traction part (7222) is connected at both ends to the first locking block (7221) and the seat (4); The fourth connector (723) includes: The second locking block (7231) is provided corresponding to the second recess (7212); The second traction part (7232) is connected at both ends to the second locking block (7231) and the backrest (5).

7. A foldable trolley according to claim 5, characterized in that: The second locking mechanism (72) further includes: The first reset member (724) acts on the third connector (722) at one end and on the seat (4) or the second connector (721) at the other end. The second reset member (725) acts on the fourth connector (723) at one end and on the backrest (5) or the second connector (721) at the other end.

8. A foldable trolley according to claim 5, characterized in that: The second locking mechanism (72) further includes an unlocking member (726) that is movable to the second connector (721); At least one of the seat cushion (4) and the backrest (5) can cause the first docking member (711) to separate from the second docking member (712) by the unlocking member (726).

9. A foldable trolley according to claim 8, characterized in that: The seat pocket (4) is provided with a first inclined surface (41), the backrest (5) is provided with a second inclined surface (51), and the unlocking member (726) is provided with a third inclined surface (7261) corresponding to the first inclined surface (41) and a fourth inclined surface (7262) corresponding to the second inclined surface (51). The foldable stroller has a first folded state and a second folded state: In the first folded state, the seat pocket (4) rotates, causing the first inclined surface (41) to interact with the third inclined surface (7261), causing the unlocking member (726) to move along the extension direction of the rotation axis of the seat pocket (4); In the second folded state, the backrest (5) rotates, causing the second inclined surface (51) to interact with the fourth inclined surface (7262), causing the unlocking member (726) to move along the extension direction of the rotation axis of the backrest (5).

10. A foldable trolley according to claim 9, characterized in that: The unlocking component (726) includes a horizontal moving part (7263) and a vertical moving part (7264). The horizontally moving part (7263) is movably disposed on the second connecting member (721); The third inclined surface (7261) and the fourth inclined surface (7262) are provided on the horizontal moving part (7263). The horizontal moving part (7263) is provided with a fifth inclined surface (7265); The vertical moving part (7264) can move vertically relative to the horizontal moving part (7263); The vertical moving part (7264) is provided with a sixth inclined surface (7266) corresponding to the fifth inclined surface (7265); In either the first or second folded state, the horizontal moving part (7263) moves horizontally, causing the fifth inclined surface (7265) and the sixth inclined surface (7266) to interact, thereby causing the vertical moving part (7264) to move vertically.

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