Joint linkage structure of cart

Abstract

The utility model relates to the technical field of carts, in particular to a cart joint linkage structure, which comprises a lower push rod, an upper push rod and a lower push rod, the upper push rod is rotationally arranged at the first end; the front bracket and the rear bracket are rotationally arranged at the second end; the linkage assembly is arranged on the inner side of the lower push rod and is used as a mechanism for linking the lower push rod, the front bracket and the rear bracket; wherein the linkage assembly comprises a first rotating part, a second rotating part, a third rotating part and a fourth rotating part, the first rotating part is arranged on the lower push rod, and at least part of the first rotating part can rotate relative to the lower push rod; the second rotating part is rotationally arranged on the front bracket; and the third rotating part is rotationally arranged on the rear bracket, the first rotating part and the second rotating part. Through the arrangement of the linkage assembly, one-to-one rotation operation of the lower push rod, the front support and the rear support is avoided in the folding storage stage, the operation amount in the folding storage stage is reduced, the purpose of improving the storage efficiency is achieved, and then the use experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a trolley technical field, concretely relates to a trolley joint linkage structure. BACKGROUND

[0002] The child stroller belongs to a kind of trolley, and as important tool for infant travel, the rationality and convenience of structural design have been concerned all the time.In the common structure of child stroller, upper push rod, lower push rod, front support and rear support are several key components.Usually, lower push rod, front support and rear support are arranged close to each other, and jointly support the main frame of child stroller, to provide stable basis for infant to ride.

[0003] In actual use, the folding function of child stroller is very important, which is related to the storage convenience and space occupation of child stroller.However, some existing child strollers have obvious defects in this regard.Some child strollers are not equipped with linkage structure, and when folding child stroller is needed, user has to manually operate each structure in turn, and moves upper push rod, lower push rod, front support and rear support one by one, which is not only tedious and time-consuming, but also extremely inconvenient for some parents who take care of baby alone and need to fold and unfold child stroller frequently, which seriously affects user experience.

[0004] In addition, although some manufacturers realize the importance of linkage structure for improving folding convenience, and add linkage structure in child stroller design, these linkage structures have unreasonable layout.Many linkage structures of child strollers are arranged on the outer side of child stroller, in completely exposed state.This design makes linkage structure vulnerable to external factors, such as collision and scratching, during daily use, which leads to damage of linkage structure and reduces service life of child stroller.Moreover, exposed linkage structure may also cause potential safety hazards to infants, such as accidental scratches caused by contacting exposed structure components when infant moves in child stroller.

[0005] Therefore, how to solve the above-mentioned problems of prior art has become the research and solution of the utility model. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a trolley joint linkage structure.

[0007] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0008] A trolley joint linkage structure, comprising:

[0009] Lower push rod, having first end and second end along the length direction of itself;

[0010] Upper push rod, rotationally arranged on the first end;

[0011] The front support and the rear support are rotatably arranged at the second end;

[0012] The linkage assembly is arranged inside the lower push rod and serves as a mechanism for linking the lower push rod, the front support and the rear support;

[0013] The linkage assembly comprises:

[0014] The first rotating part is arranged at the lower push rod and is rotatable relative to the lower push rod at least in part;

[0015] The second rotating part is rotatably arranged at the front support;

[0016] The third rotating part is rotatably arranged at the rear support, the first rotating part and the second rotating part.

[0017] The first rotating part, the second rotating part and the third rotating part are movably arranged relative to each other.

[0018] In the above scheme, when folding and storing, the lower push rod is rotated, the lower push rod drives the first rotating part, the first rotating part drives the second rotating part through the third rotating part, and the second rotating part and the third rotating part drive the front support and the rear support to rotate towards each other to achieve folding and storage.

[0019] In the above scheme, when folding and storing, the lower push rod is rotated, the lower push rod drives the first rotating part, the first rotating part drives the second rotating part through the third rotating part, and the second rotating part and the third rotating part drive the front support and the rear support to rotate towards each other to achieve folding and storage.

[0020] In the above scheme, when folding and storing, the lower push rod is rotated, the lower push rod drives the first rotating part, the first rotating part drives the second rotating part through the third rotating part, and the second rotating part and the third rotating part drive the front support and the rear support to rotate towards each other to achieve folding and storage.

[0021] It should be noted that the upper push rod, the lower push rod, the front support and the rear support are conventionally arranged. Taking the front support as an example, it can be understood as a front support assembly, which can include a support structure and a roller structure, etc.

[0022] Further technical solutions, the stroller (also referred to as a stroller joint linkage structure) has a storage state:

[0023] In the storage state, the lower push rod is rotated and drives the front support and the rear support to rotate towards each other through the first rotating part, the second rotating part and the third rotating part.

[0024] This part further clarifies the cooperation relationship between some structures when the stroller joint linkage structure is stored. Through this linkage cooperation, the operation steps during storage are reduced, and the use experience and storage efficiency are improved by reducing the amount of manual operation.

[0025] Further technical solutions, the first rotating part includes:

[0026] The first connecting rod is connected to the lower push rod;

[0027] The first rotating rod is rotatably arranged on the first connecting rod;

[0028] The third rotating part includes:

[0029] The third rotating rod is rotatably arranged on the rear support and the first rotating rod;

[0030] The second rotating part includes:

[0031] The second rotating rod has two ends rotatably arranged on the front support and the third rotating rod.

[0032] This part specifies a specific arrangement of the linkage assembly. By using a few simple rod-shaped structures, the linkage of the front support, rear support and other structures is achieved, which reduces the amount of manual operation, avoids complicating the structure of the application, ensures the structure cost, and reduces the maintenance difficulty.

[0033] The first connecting rod, the first rotating rod, the third rotating rod and the second rotating rod are arranged inside the stroller during use.

[0034] It should be emphasized that the main innovation of the present application is to realize the linkage of the lower push rod, the front support and the rear support through the linkage assembly, and the position layout of the structure in the linkage assembly.

[0035] Further technical solutions also include a seat rod and a seat connecting rod;

[0036] The two ends of the seat connecting rod are rotatably connected to the seat rod and the front support.

[0037] This part specifies the support mode of the seat rod. The seat rod is connected to the front support through the seat connecting rod. When the front support is rotated and stored, the seat connecting rod and the seat rod are both moved to complete the storage, further simplifying the storage steps, thereby further improving the storage efficiency and use experience. The mode of this part is not shown in the figure.

[0038] Further technical solutions also include a seat rod and a seat connecting rod;

[0039] The two ends of the seat connecting rod are rotatably connected to the second rotating rod and the seat rod;

[0040] The seat rod is rotationally connected to the rear support.

[0041] This part clearly defines another support mode of the seat rod. The structure layout is different in different support modes, but they can all facilitate the quick storage of the seat rod and can be adjusted flexibly according to specific needs.

[0042] Further technical solutions, the lower push rod and the upper push rod both have a first clamping groove;

[0043] The stroller joint linkage structure further comprises a first locking mechanism, the first locking mechanism comprises:

[0044] A first clamping member is arranged on the lower push rod and the upper push rod for clamping the first clamping groove;

[0045] A first bevel gear is arranged on any one of the lower push rod and the upper push rod;

[0046] A first rotating member is arranged between the lower push rod and the upper push rod and can rotate around its own axis, has a first bevel groove matched with the first bevel gear, and is used to push the first clamping member along its own axial direction;

[0047] A first unlocking member is connected to the first rotating member for promoting the rotation of the first rotating member around its own axis;

[0048] A first reset member is arranged between the lower push rod and the upper push rod for promoting the reset of the first clamping member.

[0049] In the locking stage, the first clamping member is clamped with the first clamping groove on the lower push rod and the upper push rod. At this time, the rotation of the upper push rod is realized by driving the lower push rod to rotate through the first clamping member, but the lower push rod is locked by the second locking mechanism, so the upper push rod is locked.

[0050] In the unlocking stage, the first unlocking member drives the first rotating member to rotate around its own axis through its own movement, and the first rotating member moves along its own axial direction and pushes the first clamping member to separate from the first clamping groove on the upper push rod (or the lower push rod in this example) through the guidance of the first bevel groove to the first bevel gear. At this time, the locking of the upper push rod is released, and the upper push rod can be rotated for folding and storage.

[0051] In the reset stage, after the upper push rod is rotated to the position, the first reset member promotes the first clamping member to be clamped with the first clamping groove on the upper push rod again to realize relocking. The cooperation of the first unlocking member is required in this stage. In this stage, the first unlocking member cannot apply a large force to the first rotating member to cause the first reset member to move the first rotating member.

[0052] The locking and unlocking of the upper push rod are realized through cooperation of the above structures, the locking is automatic, and the unlocking only needs to operate the first unlocking member, such as only needs to rotate the rotating part below, so that the locking and unlocking operation is efficient, simple and stable.

[0053] In some embodiments, the first unlocking member comprises a rotating part (such as a rotating seat) and a traction member (such as a steel wire rope) connected with each other, the rotating part is rotationally connected to the upper push rod and is used for winding and unwinding the traction member, and the traction member is connected to the first rotating member. The rotating part can also be replaced by a non-rotating structure, for example, an existing unlocking handle can be used instead.

[0054] Further technical solutions, the first clamping groove is provided as a tooth groove, and the first clamping member is provided as a gear structure.

[0055] And / or, the first unlocking member comprises a first transmission member connected with the first rotating member and a first rotating member connected with the first transmission member.

[0056] And / or, the first reset member is provided as a spring structure.

[0057] The first clamping groove is provided as a tooth groove, and the first clamping member is provided as a gear structure, at this time, the two can realize existing meshing connection.

[0058] This part further specifies the specific setting of the first locking mechanism, which can be flexibly adjusted in actual use to meet diversified needs.

[0059] Further technical solutions, the lower push rod and the rear support both have a second clamping groove.

[0060] The stroller joint linkage structure further comprises a second locking mechanism, and the second locking mechanism comprises:

[0061] A second clamping member is used for clamping with the second clamping groove on the lower push rod and the rear support.

[0062] A second bevel gear is arranged on any one of the lower push rod and the rear support.

[0063] A second rotating member is arranged between the lower push rod and the rear support and can rotate around its own axis, has a second bevel groove matched with the second bevel gear, and is used for pushing the second clamping member along its own axial direction.

[0064] A second unlocking member is connected to the second rotating member and is used for promoting the second rotating member to rotate around its own axis.

[0065] A second reset member is arranged between the lower push rod and the rear support and is used for promoting the second clamping member to reset.

[0066] The locking and unlocking principles of the second locking mechanism are the same as those of the first locking mechanism, and the difference lies in the different objects, so the working process of the second locking mechanism can be referred to the above description of the first locking mechanism. Similarly, the description of the specific structure (such as the first reset member) in the first locking mechanism can be regarded as the description of the similar structure (such as the second reset member) in the second locking mechanism, but there are certain differences, such as the difference in the object.

[0067] This part realizes the locking and unlocking of the push rod and the rear support through the cooperation of the second clamping member and other structures. The locking is automatic, and the unlocking only needs to operate the second unlocking member, realizing the efficiency, simplicity and stability of the locking and unlocking operation.

[0068] The rear support is taken as an example for illustration. The rear support can be understood as a rear support assembly, which can not only have only one support structure. For example, the rear support assembly can include a main body structure (including at least one support) and a joint structure connected together, and the second clamping groove is arranged on the joint structure.

[0069] Further technical solutions, the second unlocking member includes a second transmission member and a second rotating member;

[0070] The two ends of the second transmission member are connected to the second rotating member and the second rotating member respectively;

[0071] The second rotating member is connected to the push rod.

[0072] In the unlocking stage, the push rod rotates, the second rotating member is rotated by the push rod, the second transmission member is wound by the second rotating member, then the second transmission member pulls the second rotating member to rotate around its axis, and finally the unlocking of the second locking mechanism is realized.

[0073] The first rotating member needs to be operated independently, and the second rotating member is automatically operated following the push rod. The second rotating member realizes the linkage of the first locking mechanism and the second locking mechanism, and the unlocking of the first locking mechanism and the second locking mechanism can be realized only by operating the first rotating member, further realizing the efficiency, simplicity and stability of the locking and unlocking operation.

[0074] Further technical solutions, the second clamping groove is arranged as a gear slot, and the second clamping member is arranged as a gear structure;

[0075] And / or, the second reset member is arranged as a spring structure.

[0076] This part further specifies the specific arrangement of the second locking mechanism, which can be flexibly adjusted in actual use to meet diversified needs.

[0077] As used herein, "first", "second", and the like, do not particularly specify a sequence or order, and are not used to limit the present application, but are merely used to distinguish components or operations described by the same technical terms.

[0078] As used herein, "connected" or "positioned" can mean that two or more components or devices are either in direct physical contact with each other, or that two or more components or devices are not in direct contact with each other, but are able to interact or act upon each other.

[0079] As used herein, "comprising", "including", "having" and the like are open-ended terms that mean "including, but not limited to".

[0080] As used herein, the terms used herein, unless otherwise specifically noted, generally have their ordinary meanings in the field of use, in the context of the present application, and in the special context. Some terms used to describe the present application are discussed below or elsewhere in the specification to provide additional guidance to those skilled in the art in understanding the description of the present application.

[0081] As used herein, "front", "back", "up", "down", "left", "right", and the like are directional terms used in the present application only to illustrate the positional relationship between structures, and are not used to limit the scope of protection and the specific direction in actual implementation.

[0082] The working principle and advantages of the utility model are as follows:

[0083] When folding and storing, the lower push rod is rotated, the first rotating part is driven by the lower push rod, the second rotating part is rotated by the third rotating part through the third rotating part, and the front support and the rear support are rotated towards each other to realize folding and storage.

[0084] The present application avoids rotating the lower push rod, the front support and the rear support one by one in the folding and storage stage by setting the linkage assembly, reduces the operation amount in the folding and storage stage, achieves the purpose of improving the storage efficiency, and further improves the use experience.

[0085] In the present application, the linkage assembly is arranged on the inner side of the lower push rod, which is a non-exposed structure, improves the appearance, avoids the situation that the exposed structure in the linkage assembly injures the user, and reduces the interference of external factors on the linkage assembly, thereby improving the service life. BRIEF DESCRIPTION OF DRAWINGS

[0086] Figure 1 The structure diagram of the utility model embodiment trolley joint linkage structure is shown in the figure;

[0087] Figure 2 The structure diagram of the utility model embodiment trolley joint linkage structure is shown in the figure; Figure 1 The enlarged view of A in the figure;

[0088] Figure 3 This is a schematic diagram of the usage state of the trolley joint linkage structure according to an embodiment of the present utility model;

[0089] Figure 4 This is a schematic diagram of the trolley joint linkage structure during the folding process according to an embodiment of the present invention;

[0090] Figure 5 This is a schematic diagram of the folded joint linkage structure of the trolley according to an embodiment of the present invention;

[0091] Figure 6 This is one of the exploded views of the trolley joint linkage structure according to an embodiment of this utility model;

[0092] Figure 7 for Figure 6 Schematic diagram of a local structure in the middle;

[0093] Figure 8 This is the second exploded view of the trolley joint linkage structure according to an embodiment of the present utility model;

[0094] Figure 9 for Figure 8 A schematic diagram of a local part of the structure.

[0095] In the above figures: 1. Lower push rod; 11. First end; 12. Second end; 2. Upper push rod; 3. Front bracket; 4. Rear bracket; 5. Linkage assembly; 51. First rotating part; 511. First connecting rod; 512. First rotating rod; 52. Second rotating part; 521. Second rotating rod; 53. Third rotating part; 531. Third rotating rod; 6. Seat rod; 7. Seat connecting rod; 8. Joint structure; 9. First slot; 10. Second slot; 100. First locking mechanism; 110 120. First engaging component; 130. First helical tooth; 131. First rotating component; 140. First unlocking component; 141. First transmission component; 142. First rotating component; 150. First resetting component; 200. Second locking mechanism; 210. Second engaging component; 220. Second helical tooth; 230. Second rotating component; 231. Second helical groove; 240. Second unlocking component; 241. Second transmission component; 242. Second rotating component; 250. Second resetting component. 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 particular embodiments only and is not intended to be limiting thereof. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0099] Referring to Figures 1-9 A stroller joint linkage structure comprises:

[0100] A lower push rod 1 has a first end 11 and a second end 12 along the length direction of the lower push rod 1;

[0101] An upper push rod 2 is rotatably arranged at the first end 11;

[0102] A front support 3 and a rear support 4 are rotatably arranged at the second end 12;

[0103] A linkage assembly 5 is arranged inside the lower push rod 1 and serves as a mechanism for linking the lower push rod 1, the front support 3 and the rear support 4;

[0104] The linkage assembly 5 comprises:

[0105] A first rotating part 51 is arranged at the lower push rod 1 and is rotatable relative to the lower push rod 1 at least in part;

[0106] A second rotating part 52 is rotatably arranged at the front support 3;

[0107] A third rotating part 53 is rotatably arranged at the rear support 4, the first rotating part 51 and the second rotating part 52.

[0108] The first rotating part 51, the second rotating part 52 and the third rotating part 53 are movably arranged relative to each other.

[0109] During folding and storage, the lower push rod 1 is rotated, the first rotating part 51 is driven by the lower push rod 1, the second rotating part 52 is rotated by the third rotating part 53 through the first rotating part 51, and the front support 3 and the rear support 4 are rotated towards each other by the second rotating part 52 and the third rotating part 53 to achieve folding and storage.

[0110] The present application avoids rotating the lower push rod 1, the front support 3 and the rear support 4 one by one during folding and storage by arranging the linkage assembly 5, reduces the operation amount during folding and storage, achieves the purpose of improving the storage efficiency, and further improves the use experience.

[0111] In the present application, the linkage assembly 5 is arranged inside the lower push rod 1 and is a non-exposed structure, which improves the appearance (or aesthetic appearance) and avoids the situation that the exposed structure in the linkage assembly 5 hurts the user, and can reduce the interference of external factors on the linkage assembly 5, thereby improving the service life.

[0112] It should be noted that the upper push rod 2, the lower push rod 1, the front support 3 and the rear support 4 are conventionally provided, and the front support 3 is taken as an example, which can be understood as a front support assembly, that is, it can include not only a support structure but also a roller structure and the like.

[0113] It should be emphasized that the present application is illustrated by a stroller, but is not limited to only being applied to a stroller.

[0114] Referring to Figures 3-5 In the embodiment, the stroller joint linkage structure has a storage state:

[0115] In the storage state, the lower push rod 1 is rotated and causes the front support 3 and the rear support 4 to rotate towards each other through the first rotating part 51, the second rotating part 52 and the third rotating part 53.

[0116] The embodiment further clarifies the cooperation relationship between some structures when the stroller joint linkage structure is stored, and through such linkage cooperation, the operation steps during storage are reduced, and the use experience and storage efficiency are improved by reducing the amount of manual operation.

[0117] Referring to Figure 2 In the embodiment, the first rotating part 51 includes:

[0118] The first connecting rod 511 is connected to the lower push rod 1;

[0119] The first rotating rod 512 is rotatably arranged on the first connecting rod 511;

[0120] The third rotating part 53 includes:

[0121] The third rotating rod 531 is rotatably arranged on the rear support 4 and the first rotating rod 512;

[0122] The second rotating part 52 includes:

[0123] The second rotating rod 521 is rotatably arranged at both ends of the front support 3 and the third rotating rod 531.

[0124] The first connecting rod 511 and the lower push rod 1 are taken as an example to illustrate the connection relationship, and the connection relationship between other structures can be referred to, for example, the first connecting rod 511 and the lower push rod 1 can be threadedly connected, or can be integrally provided, and the embodiment does not make specific limitations, and the first connecting rod 511 and the lower push rod 1 can be (fixedly) connected in general.

[0125] Take the first connecting rod 511 and the first rotating rod 512 as an example to illustrate the rotating connection, and the rotating connection between other structures can be referred to, as follows: the first connecting rod 511 can be rotatably connected with the first rotating rod 512 through a rotating shaft and a bearing. The rotating connection is a conventional setting and is not an innovative point of the present application.

[0126] The embodiment clearly defines a specific setting of the linkage assembly 5, which realizes the linkage of the front support 3, the rear support 4 and other structures by adopting a simple few rod-shaped structures, reduces the amount of manual operation, avoids complicating the structure of the present application, thereby ensuring the structure cost and reducing the maintenance difficulty.

[0127] The first connecting rod 511, the first rotating rod 512, the third rotating rod 531 and the second rotating rod 521 are all arranged on the inner side of the stroller in use.

[0128] It should be emphasized that the main innovative point of the present application is to realize the linkage of the push-down rod 1, the front support 3 and the rear support 4 through the linkage assembly 5, and the position layout of the structure in the linkage assembly 5.

[0129] Referring to Figures 3-5 In the embodiment, a seat rod 6 and a seat connecting rod 7 are further included.

[0130] Both ends of the seat connecting rod 7 are rotatably connected with the seat rod 6 and the front support 3 respectively.

[0131] The seat rod 6 is a conventional setting, and the shape can refer to the shape in the drawings.

[0132] The embodiment clearly defines the supporting mode of the seat rod 6, which is connected with the front support 3 through the seat connecting rod 7. When the front support 3 is rotated and stored, the seat connecting rod 7 and the seat rod 6 are both moved to complete the storage, further simplifying the storage steps, thereby further improving the storage efficiency and use experience.

[0133] Referring to Figures 3-5 In the embodiment, a seat rod 6 and a seat connecting rod 7 are further included.

[0134] Both ends of the seat connecting rod 7 are rotatably connected with the second rotating rod 521 and the seat rod 6 respectively.

[0135] The seat rod 6 is rotatably connected with the rear support 4.

[0136] The embodiment clearly defines another supporting mode of the seat rod 6. The structure layout is different in different supporting modes, but both can facilitate the quick storage of the seat rod 6, which can be flexibly adjusted according to specific needs.

[0137] Referring to Figures 6-9 In the embodiment, the first clamping groove 9 is arranged on both the push-down rod 1 and the push-up rod 2.

[0138] The trolley joint linkage structure further comprises a first locking mechanism 100, which comprises:

[0139] a first clamping piece 110 for clamping with a first clamping groove 9 on the lower push rod 1 and the upper push rod 2;

[0140] a first bevel gear 120 provided on any one of the lower push rod 1 and the upper push rod 2;

[0141] a first rotating piece 130 provided between the lower push rod 1 and the upper push rod 2 and rotatable about its own axis, having a first bevel groove 131 matched with the first bevel gear 120, for pushing the first clamping piece 110 along its own axial direction;

[0142] a first unlocking piece 140 connected to the first rotating piece 130, for promoting the first rotating piece 130 to rotate about its own axis;

[0143] a first resetting piece 150 provided between the lower push rod 1 and the upper push rod 2, for promoting the first clamping piece 110 to reset.

[0144] In the locking stage, the first clamping piece 110 is clamped with the first clamping groove 9 on the lower push rod 1 and the upper push rod 2, at this time, the rotation of the upper push rod 2 is premised on the rotation of the lower push rod 1 driven by the first clamping piece 110, but the lower push rod 1 is locked by the second locking mechanism 200 described below at this time, so the upper push rod 2 is locked.

[0145] In the unlocking stage, the first unlocking piece 140 drives the first rotating piece 130 to rotate about its own axis through its own movement, and the first rotating piece 130 moves along its own axial direction and pushes the first clamping piece 110 to separate from the first clamping groove 9 on the upper push rod 2 (in this example, it can also be the lower push rod 1) through the guidance of the first bevel groove 131 to the first bevel gear 120, at this time, the locking of the upper push rod 2 is released, and the upper push rod 2 can rotate to be folded and stored.

[0146] In the resetting stage, after the upper push rod 2 is rotated to the position, the first resetting piece 150 promotes the first clamping piece 110 to be clamped with the first clamping groove 9 on the upper push rod 2 again to realize relocking. The cooperation of the first unlocking piece 140 is needed in this stage, in this stage, the first unlocking piece 140 cannot apply a large force to the first rotating piece 130 to cause the first resetting piece 150 to fail to push the first rotating piece 130 to move.

[0147] Through the cooperation of the above structure, the locking and unlocking of the upper push rod 2 are realized, the locking is automatic locking, and the unlocking only needs to operate the first unlocking piece 140, such as only needs to rotate the rotating part described below, to realize the high efficiency, simplicity and stability of the locking and unlocking operation.

[0148] In some embodiments, the first unlocking member 140 comprises a rotating part (e.g. a rotating seat) and a traction member (e.g. a steel wire), the rotating part is rotatably connected to the upper push rod 2 and used to wind and unwind the traction member, the traction member is connected to the first rotating member 130. The rotating part can also be replaced by a non-rotating structure, for example, the existing unlocking handle can be used instead.

[0149] In some embodiments, the first bevel gear 120 is arranged on the upper push rod 2.

[0150] In some embodiments, one end of the first reset member 150 acts on the first clamping member 110, and the other end acts on the lower push rod 1.

[0151] In the present embodiment, the first clamping groove 9 is arranged as a tooth groove, and the first clamping member 110 is arranged as a gear structure.

[0152] And / or, the first unlocking member 140 comprises a first transmission member 141 connected to the first rotating member 130 and a first rotating member 142 connected to the first transmission member 141.

[0153] And / or, the first reset member 150 is arranged as a spring structure.

[0154] The first clamping groove 9 is arranged as a tooth groove, and the first clamping member 110 is arranged as a gear structure, at this time, the two can realize the existing meshing connection.

[0155] In some embodiments, the first transmission member 141 is arranged as a steel wire.

[0156] In some embodiments, the first rotating member 142 is rotatably connected to the upper push rod 2.

[0157] In some embodiments, the first reset member 150 is arranged as a compression spring.

[0158] The present embodiment further specifies the specific arrangement of the first locking mechanism 100, which can be flexibly adjusted in structure to meet diversified needs in actual use.

[0159] Referring to Figures 6-9 In the present embodiment, the lower push rod 1 and the rear support 4 both have a second clamping groove 10.

[0160] The stroller joint linkage structure further comprises a second locking mechanism 200, the second locking mechanism 200 comprises:

[0161] A second clamping member 210 for clamping with the second clamping groove 10 on the lower push rod 1 and the rear support 4.

[0162] A second inclined tooth 220 is arranged on any one of the lower push rod 1 and the rear support 4;

[0163] A second rotating member 230 is arranged between the lower push rod 1 and the rear support 4 and can rotate around its own axis, has a second inclined surface groove 231 matched with the second inclined tooth 220, and is used to push the second clamping member 210 along its own axial direction;

[0164] A second unlocking member 240 is connected to the second rotating member 230 and is used to promote the second rotating member 230 to rotate around its own axis;

[0165] A second resetting member 250 is arranged between the lower push rod 1 and the rear support 4 and is used to promote the second clamping member 210 to reset.

[0166] The locking and unlocking principles of the second locking mechanism 200 are the same as those of the first locking mechanism 100, and the difference lies in the different objects of action. Therefore, the working process of the second locking mechanism 200 can be referred to the above description of the first locking mechanism 100, and the description of the specific structure (such as the first resetting member 150) in the first locking mechanism 100 can be regarded as the description of the similar structure (such as the second resetting member 250) in the second locking mechanism 200, but there are certain differences, such as the difference in the objects of action.

[0167] The second clamping member 210 and other structures are matched to realize the locking and unlocking of the upper push rod 2 and the rear support 4, the locking is automatic, and the unlocking only needs to operate the second unlocking member 240, so that the efficiency, simplicity and stability of the locking and unlocking operation are realized.

[0168] The rear support 4 is taken as an example for illustration, and the rear support 4 can be understood as a rear support assembly, which can not only have only one support structure, for example, the rear support 4 assembly can include a main body structure (including at least one support) and a joint structure 8 connected together, and the second clamping groove 10 is arranged on the joint structure 8.

[0169] In some embodiments, the stroller joint linkage structure further includes a third locking mechanism acting on the lower push rod 1 and the front support 3 and having the same action principle as the second locking mechanism 200, and the third locking mechanism can also be linked with the first locking mechanism 100. In some cases, the objects of action of the second locking mechanism 200 and the third locking mechanism can be interchangeable.

[0170] Referring to Figures 6-9 In the embodiment, the second unlocking member 240 includes a second transmission member 241 and a second rotating member 242;

[0171] The two ends of the second transmission member 241 are respectively connected to the second rotating member 230 and the second rotating member 242.

[0172] The second rotating member 242 is connected to the push-up rod 2.

[0173] In the unlocking stage, the push-up rod 2 rotates, the second rotating member 242 rotates driven by the push-up rod 2, the second transmission member 241 is wound by the second rotating member 242, then the second transmission member 241 pulls the second rotating member 230 to rotate around its own axis, and finally the unlocking of the second locking mechanism 200 is realized.

[0174] The first rotating member 142 needs to be operated independently, and the second rotating member 242 is automatically operated following the push-up rod 2, the linkage of the first locking mechanism 100 and the second locking mechanism 200 is realized by the second rotating member 242, and the unlocking of the first locking mechanism 100 and the second locking mechanism 200 can be realized only by operating the first rotating member 142, further realizing the high efficiency and simplicity of the locking and unlocking operation.

[0175] In some embodiments, the second transmission member 241 is provided as a steel wire rope.

[0176] In the embodiment, the second clamping groove 10 is provided as a tooth groove, and the second clamping member 210 is provided as a gear structure.

[0177] And / or, the second reset member 250 is provided as a spring structure.

[0178] The second clamping groove 10 is provided as a tooth groove, and the second clamping member 210 is provided as a gear structure, at this time, the two can realize meshing connection.

[0179] In some embodiments, the second reset member 250 is provided as a compression spring.

[0180] The embodiment further clearly defines the specific setting of the second locking mechanism 200, and the second locking mechanism 200 can be flexibly adjusted in structure to meet diversified needs in actual use.

[0181] The working process of the present application is as follows:

[0182] In the locking stage, the first clamping member 110 is clamped with the first clamping groove 9 on the push-up rod 2 and the push-down rod 1, the push-up rod 2 is locked, and the push-down rod 1 is also locked by the second clamping member 210.

[0183] In the unlocking stage, the first unlocking member 140 drives the first rotating member 130 to rotate around its own axis by its own movement, and the first rotating member 130 moves along its own axis and pushes the first clamping member 110 away from the first clamping groove 9 on the push-up rod 2 through the guidance of the first inclined surface groove 131 to the first inclined tooth 120, at this time, the locking of the push-up rod 2 is released.

[0184] When the upper push rod 2 is rotated, the upper push rod 2 drives the second rotating part 242 to rotate, the second rotating part 242 winds the second transmission part 241, then the second transmission part 241 drives the second rotating part 230 to rotate around its axis, finally the second locking mechanism 200 is unlocked, at this time, the lower push rod 1 is unlocked.

[0185] Then the lower push rod 1 is rotated, the lower push rod 1 drives the first connecting rod 511 and the first rotating rod 512 in the first rotating part 51, the first rotating part 51 drives the second rotating part 52 to rotate through the third rotating part 53, the second rotating part 52 and the third rotating part 53 drive the front support 3 and the rear support 4 to rotate towards each other to realize folding and storage.

[0186] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable the person skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A pushchair articulation arrangement, characterized by: The stroller comprises: a lower push rod (1) having a first end (11) and a second end (12) along a length direction of the lower push rod (1); an upper push rod (2) rotatably arranged at the first end (11); a front support (3) and a rear support (4) rotatably arranged at the second end (12); a linkage assembly (5) arranged inside the lower push rod (1) and serving as a mechanism for linking the lower push rod (1), the front support (3) and the rear support (4); wherein the linkage assembly (5) comprises: a first rotating part (51) arranged at the lower push rod (1) and rotatable relative to the lower push rod (1) at least in part; a second rotating part (52) rotatably arranged at the front support (3); a third rotating part (53) rotatably arranged at the rear support (4), the first rotating part (51) and the second rotating part (52).

2. The articulated structure of claim 1, wherein: The stroller has a storage state: in the storage state, the lower push rod (1) is rotated and causes the front support (3) and the rear support (4) to rotate towards each other through the first rotating part (51), the second rotating part (52) and the third rotating part (53).

3. The articulated structure of claim 1, wherein: The first rotating part (51) comprises: a first connecting rod (511) connected to the lower push rod (1); a first rotating rod (512) rotatably arranged at the first connecting rod (511); The third rotating part (53) comprises: a third rotating rod (531) rotatably arranged at the rear support (4) and the first rotating rod (512); The second rotating part (52) comprises: a second rotating rod (521) having two ends rotatably arranged at the front support (3) and the third rotating rod (531), respectively.

4. The articulated structure of claim 3, wherein: The stroller further comprises a seat rod (6) and a seat connecting rod (7); two ends of the seat connecting rod (7) are rotatably connected to the seat rod (6) and the front support (3), respectively.

5. The articulated structure of claim 3, wherein: The stroller further comprises a seat rod (6) and a seat connecting rod (7); two ends of the seat connecting rod (7) are rotatably connected to the second rotating rod (521) and the seat rod (6), respectively; the seat rod (6) is rotatably connected to the rear support (4).

6. The articulated structure of claim 3, wherein: The first clamping groove (9) is arranged on the lower push rod (1) and the upper push rod (2); The stroller joint linkage structure further comprises a first locking mechanism (100), and the first locking mechanism (100) comprises: a first clamping member (110) for clamping the first clamping groove (9) on the lower push rod (1) and the upper push rod (2); a first bevel gear (120) arranged on any one of the lower push rod (1) and the upper push rod (2); a first rotating member (130) arranged between the lower push rod (1) and the upper push rod (2) and rotatable about an axis thereof, having a first bevel groove (131) matched with the first bevel gear (120) and used for pushing the first clamping member (110) along an axial direction of the first rotating member (130); a first unlocking member (140) connected to the first rotating member (130) and used for rotating the first rotating member (130) about the axis thereof; a first resetting member (150) arranged between the lower push rod (1) and the upper push rod (2) and used for resetting the first clamping member (110).

7. A pushchair articulation arrangement according to claim 6, wherein: The first clamping groove (9) is arranged as a tooth groove, and the first clamping member (110) is arranged as a gear structure. And / or, the first unlocking member (140) comprises a first transmission member (141) connected with the first rotating member (130) and a first rotating member (142) connected with the first transmission member (141). And / or, the first reset member (150) is arranged as a spring structure.

8. The articulated structure of claim 6, wherein: The lower push rod (1) and the rear support (4) are both provided with a second clamping groove (10); The stroller joint linkage structure further comprises a second locking mechanism (200), and the second locking mechanism (200) comprises: A second clamping member (210) for clamping with the second clamping groove (10) on the lower push rod (1) and the rear support (4); A second bevel gear (220) arranged on any one of the lower push rod (1) and the rear support (4); A second rotating member (230) arranged between the lower push rod (1) and the rear support (4) and rotatable about its own axis, having a second bevel groove (231) matched with the second bevel gear (220) for pushing the second clamping member (210) along its own axial direction; A second unlocking member (240) connected with the second rotating member (230) for promoting the second rotating member (230) to rotate about its own axis; A second reset member (250) arranged between the lower push rod (1) and the rear support (4) for promoting the second clamping member (210) to reset.

9. The articulated structure of claim 8, wherein: The second unlocking member (240) comprises a second transmission member (241) and a second rotating member (242); Two ends of the second transmission member (241) are respectively connected with the second rotating member (230) and the second rotating member (242); The second rotating member (242) is connected with the upper push rod (2).

10. The articulated structure of claim 8, wherein: The second clamping groove (10) is arranged as a tooth groove, and the second clamping member (210) is arranged as a gear structure. And / or, the second reset member (250) is arranged as a spring structure.

Images