A reversing mechanism for a push bar of a baby carriage

Abstract

The utility model relates to a baby carriage technology field, concretely relates to a baby carriage push rod reversing mechanism, including connecting axle and the main body structure and push rod structure of evenly setting on this connecting axle, the end portion that the main body structure set on the connecting axle has the first groove body with opening direction push rod structure, the end portion that push rod structure set on the connecting axle has the second groove body with opening direction main body structure, and the bottom wall between the first groove body and the bottom wall of second groove body is equipped with the locking piece of the movable sleeve that sets on the connecting axle, still including the traction piece and the unlocking piece that are connected, the traction piece moves and sets up on push rod structure, and the unlocking piece movable sleeve sets up on the outside of connecting axle, the traction piece can make the unlocking piece rotate, and the unlocking piece can make the locking piece move along the length direction of connecting axle to be far away from the second groove body by the rotation of itself, the bottom wall between the locking piece and the first groove body is equipped with the elastic part, and the elastic part makes the locking piece have the movement tendency that is close to the bottom wall of second groove body.

Description

Technical Field

[0001] This utility model relates to the field of children's vehicle technology, specifically to a children's vehicle push rod reversing mechanism. Background Technology

[0002] Currently, strollers are mainly divided into two categories: one-way strollers and two-way strollers. In one-way strollers, the push rod is fixedly connected to the seat and cannot rotate relative to it. The front and rear wheels differ in size, installation interface, and functional design, making them non-interchangeable. In two-way strollers, the push rod can rotate circumferentially relative to the seat, satisfying both forward and reverse pushing needs.

[0003] While existing reversible strollers have solved the problem of unidirectional strollers having only one direction of push, they still have significant shortcomings: First, the push rod reversing mechanism has a complex design with many parts and high assembly precision requirements, which increases manufacturing costs and maintenance difficulty; Second, the locking and unlocking operations are cumbersome, requiring the use of screwing in bolts and pressing multiple sets of buckles, which cannot meet the needs of quick reversal and affects the user experience.

[0004] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0005] The purpose of this invention is to provide a stroller push rod reversing mechanism.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A stroller push rod reversing mechanism includes a connecting shaft and a main body structure and a push rod structure both sleeved on the connecting shaft;

[0008] The end of the main structure sleeved on the connecting shaft has a first groove with an opening facing the push rod structure, and the end of the push rod structure sleeved on the connecting shaft has a second groove with an opening facing the main structure. A locking member is provided between the bottom wall of the first groove and the bottom wall of the second groove, which is movably sleeved on the connecting shaft. The locking member can restrict the relative rotation of the main structure and the push rod structure by inserting into the first groove and the second groove.

[0009] It also includes a traction member and an unlocking member connected together. The traction member is movably mounted on the push rod structure, and the unlocking member is movably sleeved on the outside of the connecting shaft. The traction member can cause the unlocking member to rotate, and the unlocking member can cause the locking member to move along the length direction of the connecting shaft away from the second groove by rotating itself.

[0010] An elastic element is provided between the locking member and the bottom wall of the first groove, which causes the locking member to have a tendency to move closer to the bottom wall of the second groove.

[0011] The relative rotation between the main structure and the push rod structure is achieved through a connecting shaft. The connecting shaft is a standard feature and will not be described in detail here.

[0012] The main structure may include a front support structure, a rear support structure, or a base structure. The main structure itself is not an innovative point in this application.

[0013] The push rod structure may include a U-shaped push rod (existing configuration), and the push rod structure may have two ends sleeved on the connecting shaft (existing configuration can be referred to in the accompanying drawings, hereinafter referred to as connecting ends). For ease of explanation, this application describes the push rod structure with one connecting end sleeved on the connecting shaft, but it is understood that setting two connecting ends is the conventional approach, and this application may include this configuration.

[0014] The main structure, fitted onto the connecting shaft, has a first groove with an opening facing the push rod structure. The push rod structure, fitted onto the connecting shaft, has a second groove with an opening facing the main structure. A locking member, movably fitted onto the connecting shaft, is located between the bottom walls of the first and second grooves. The first and second grooves protect the locking member, thus extending its service life. Furthermore, even with a thicker locking member to enhance structural strength, it avoids occupying excessive lateral space, effectively controlling the width of the stroller push rod reversing mechanism in this application. Based on this design, the locking member can simultaneously insert into both the first and second grooves to restrict relative rotation between the main structure and the push rod structure, effectively locking the push rod structure and preventing unauthorized movement that could pose a safety risk.

[0015] The traction component is movably mounted on the push rod structure. For example, the traction component includes a connected slider and a steel wire rope. The slider is slidably mounted on the push rod of the push rod structure. By sliding the slider, the steel wire rope can be pulled, and then the steel wire rope can pull the unlocking component to rotate. It should be noted that the traction component itself is not an innovative point in this application.

[0016] The unlocking component is movably sleeved on the outside of the connecting shaft. The traction component can cause the unlocking component to rotate. The unlocking component can cause the locking component to move along the length of the connecting shaft away from the second groove by rotating itself. The implementation method is conventional. For example, the unlocking component and the locking component each have an inclined surface (not shown in the figure). The rotation of the unlocking component is converted into the linear motion of the locking component through the interaction of the two inclined surfaces. This is the conventional direction conversion setting on existing strollers, which will not be described in detail here.

[0017] It should be noted that the unlocking component can be movably fitted onto the connecting shaft, but is not limited to this. For example, the connecting end of the push rod structure has a cylindrical structure, and the connecting shaft is inserted into the circular hole on the cylindrical structure to install the push rod structure. In this case, the unlocking component can be movably fitted onto the cylindrical structure, which conforms to the setting of the unlocking component being movably fitted onto the outside of the connecting shaft. It should also be noted that the unlocking component itself is not an innovative point in this application.

[0018] An elastic element is provided between the locking element and the bottom wall of the first groove. This elastic element causes the locking element to tend to move closer to the bottom wall of the second groove, so that after the locking element is moved away from the second groove by the unlocking element, it can automatically reset into the second groove in the future, and then automatically lock it again after the push rod structure changes direction.

[0019] In summary, the push-rod structure of this application enables reversible operation and is suitable for both unidirectional and reversible strollers. Furthermore, the push-rod structure allows for quick locking and unlocking, reduces the time required for reversing, and maintains stability before and after reversing, thereby improving the user's reversing experience. The push-rod reversing mechanism of this application can also be applied to other types of strollers, such as those used for loading goods.

[0020] In a further technical solution, the first groove includes a first main groove and a plurality of first sub-grooves communicating with the edge region of the first main groove, and the first main groove is coaxially arranged with the connecting shaft;

[0021] The second groove includes a second main groove and a plurality of second sub-grooves communicating with the edge region of the second main groove, and the second main groove is coaxially arranged with the connecting shaft;

[0022] The locking component includes a connecting portion and a plurality of locking portions connected to the edge portion of the connecting portion. The connecting portion is movably sleeved on the outside of the connecting shaft. Each locking portion can be inserted into each of the first sub-slots and each of the second sub-slots to restrict the relative rotation between the main body structure and the push rod structure.

[0023] Taking the first groove as an example, each first sub-groove is arranged around the first main groove in the circumferential direction.

[0024] The first and second main slots are used to accommodate the connecting parts, and the first and second sub-slots are used to accommodate the locking parts. These corresponding structural shapes are adapted to each other, and can be understood with reference to the attached drawings. The locking component as a whole can be gear-shaped.

[0025] Taking a single locking part as an example, when one part is accommodated in the first sub-slot and the other part in the second sub-slot, if the push rod structure wants to rotate, it needs to rotate the locking part. However, the locking part is limited by the first sub-slot, thus locking the push rod structure. The use of multiple locking parts ensures the strength and locking effect of the locking mechanism. For example, if a single locking part wears down, the push rod structure may be able to rotate only slightly, but the use of multiple locking parts can minimize this problem.

[0026] A further technical solution is that the wall portion of each first sub-slot facing the opening of the second sub-slot is chamfered, and the wall portion of each second sub-slot facing the opening of the first sub-slot is also chamfered.

[0027] Along the length of the connecting shaft, the edge regions at both ends of each locking part are chamfered.

[0028] In this section, by chamfering these areas to form chamfered regions, the locking part can be easily inserted into the first and second sub-slots, improving the smoothness of the process, avoiding jamming problems, and thus improving the user experience.

[0029] It should be noted that if we take the connection end as two, it can be understood that the wall of each first sub-slot is chamfered at the opening of the adjacent (or corresponding) second sub-slot.

[0030] In a further technical solution, the locking member has a recessed surface on one side of the bottom wall of the first groove to form a third groove, and a compression spring is movably disposed in the third groove. The compression spring extends along the length direction of the connecting shaft and constitutes the elastic member.

[0031] The elastic element is composed of a compression spring, which has a simple structure. As the compression spring extends along the length of the connecting shaft, it can stably achieve the reset of the locking element.

[0032] The third groove allows for the quick installation of a compression spring, and the spring's movable design does not affect its stretching and contraction, thus ensuring the reset of the locking mechanism.

[0033] The length of the compression spring in the unloaded state (hereinafter referred to as the initial length) is not limited. The distance between the bottom wall of the first groove and the bottom wall of the third groove is set to A. Preferably, the initial length of the compression spring is equal to A.

[0034] In a further technical solution, the third groove is coaxially arranged with the connecting shaft;

[0035] And / or, a guide is connected to the bottom wall of the third groove, and the compression spring is movably sleeved on the guide.

[0036] Preferably, the third groove, the connecting shaft, and the guide are coaxially arranged, and the guide is provided with a through hole for the connecting shaft to pass through.

[0037] The guide can limit the deformation direction of the compression spring, so that it can only stretch and contract along the length of the connecting shaft. At this time, even if the cross-sectional size of the third groove is larger than the cross-sectional size of the compression spring, it can still limit the range of motion of the compression spring (such as preventing it from moving radially along the connecting shaft), so that it can be used to stably achieve the reset of the locking element.

[0038] A further technical solution is that the edge region of the locking member is provided with an arc-shaped limiting hole that extends through the length of the connecting shaft;

[0039] The second groove is fixedly provided with a plug extending along the length direction of the connecting shaft, and a portion of the plug extends out of the second groove for insertion and assembly with the arc-shaped limiting hole.

[0040] The locking part may have an arc-shaped limiting hole.

[0041] The connector rotates around the axis of the connecting shaft along with the push rod structure. The connector engages with the arc-shaped limiting hole, limiting the bidirectional rotation angle of the push rod structure. This indicates to the operator whether the rotation is complete and facilitates the stable reset of the locking mechanism by compressing the spring, ensuring the push rod structure remains automatically locked even after reversing direction. The shape and extension direction of the arc-shaped limiting hole, as well as the extension direction of the connector, are adapted to the rotation process of the push rod structure.

[0042] The locking component is restricted by the first groove and cannot rotate around the connecting shaft. In this case, it is only necessary to open an arc-shaped limiting hole on the locking component, and it is not necessary to open an arc-shaped limiting hole on the main structure.

[0043] In a further technical solution, the connector has a horizontally extending arc-shaped insertion end, which is used for insertion and assembly with the arc-shaped limiting hole. The arc-shaped limiting hole can limit the rotation angle of the push rod structure relative to the main body structure by limiting the movement range of the arc-shaped insertion end.

[0044] The arc-shaped plug-in end is assembled with the arc-shaped limiting hole, which can limit the bidirectional rotation angle of the push rod structure, remind the operator whether the rotation is in place, facilitate the stable reset of the locking component by the compression spring, and ensure that the push rod structure can be automatically locked after reversing direction. The shape and extension direction of the arc-shaped plug-in end are adapted to the rotation process of the push rod structure, allowing it to move smoothly within the arc-shaped limiting hole.

[0045] 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.

[0046] 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.

[0047] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0048] 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 this case.

[0049] 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.

[0050] The working principle and advantages of this utility model are as follows:

[0051] The main structure, fitted onto the connecting shaft, has a first groove with an opening facing the push rod structure. The push rod structure, fitted onto the connecting shaft, has a second groove with an opening facing the main structure. A locking member, movably fitted onto the connecting shaft, is located between the bottom walls of the first and second grooves. The first and second grooves protect the locking member, thus extending its service life. Furthermore, even with a thicker locking member to enhance structural strength, it avoids occupying excessive lateral space, effectively controlling the width of the stroller push rod reversing mechanism in this application. Based on this design, the locking member can simultaneously insert into both the first and second grooves to restrict relative rotation between the main structure and the push rod structure, effectively locking the push rod structure and preventing unauthorized movement that could pose a safety risk.

[0052] The traction component is movably mounted on the push rod structure. For example, the traction component includes a connected slider and a steel wire rope. The slider is slidably mounted on the push rod of the push rod structure. By sliding the slider, the steel wire rope can be pulled, and the steel wire rope can then pull the unlocking component to rotate. The unlocking component is movably sleeved on the outside of the connecting shaft. The traction component can cause the unlocking component to rotate, and the unlocking component can cause the locking component to move along the length of the connecting shaft away from the second groove body through its own rotation.

[0053] An elastic element is provided between the locking element and the bottom wall of the first groove. This elastic element causes the locking element to tend to move closer to the bottom wall of the second groove, so that after the locking element is moved away from the second groove by the unlocking element, it can automatically reset into the second groove in the future, and then automatically lock it again after the push rod structure changes direction.

[0054] In summary, the push rod structure in this application enables reversing, is suitable for both unidirectional and bidirectional strollers, and allows for quick locking and unlocking, resulting in a short reversing time and stability before and after the reversal, thus improving the user's reversing experience. The specific reversing structure design in this application is simple, has fewer parts, reduces assembly precision requirements, and lowers manufacturing costs and maintenance difficulty. Attached Figure Description

[0055] Appendix Figure 1 This is a schematic diagram of the overall structure of the stroller push rod reversing mechanism according to an embodiment of the present utility model;

[0056] Appendix Figure 2 This is a schematic diagram of the push rod structure according to an embodiment of the present invention;

[0057] Appendix Figure 3 This is one of the partial structural schematic diagrams of the stroller push rod reversing mechanism according to an embodiment of this utility model;

[0058] Appendix Figure 4 For the appendix Figure 3 One of the schematic diagrams of a local structure;

[0059] Appendix Figure 5 For the appendix Figure 3 The second partial structural diagram;

[0060] Appendix Figure 6 This is a second partial structural schematic diagram of the stroller push rod reversing mechanism according to an embodiment of this utility model;

[0061] Appendix Figure 7 For the appendix Figure 6 One of the schematic diagrams of a partial structure at point A in the middle;

[0062] Appendix Figure 8 For the appendix Figure 6 Partial structural diagram of point A (second part);

[0063] Appendix Figure 9 For the appendix Figure 8 A structural diagram from another perspective;

[0064] Appendix Figure 10 This is the third partial structural schematic diagram of the stroller push rod reversing mechanism according to an embodiment of this utility model;

[0065] Appendix Figure 11 For the appendix Figure 10Structural diagram omitting the supporting components;

[0066] Appendix Figure 12 For the appendix Figure 11 Enlarged view of section B in the middle.

[0067] In the attached diagrams above:

[0068] 1. Connecting shaft;

[0069] 2. Main structure; 21. First groove; 211. First main groove; 212. First sub-groove; 22. Support part; 221. Arc-shaped through hole; 23. Front support structure; 24. Rear support structure; 241. Fourth groove;

[0070] 3. Push rod structure; 31. Second groove; 311. Second main groove; 312. Second sub-groove; 32. Push rod; 33. Connecting end;

[0071] 4. Locking component; 41. Connecting part; 42. Locking part; 43. Third groove; 44. Arc-shaped limiting hole;

[0072] 5. Traction components;

[0073] 6. Unlocking parts;

[0074] 7. Elastic components;

[0075] 8. Compression spring;

[0076] 9. Guide components;

[0077] 10. Connector; 101. Arc-shaped connector end;

[0078] 11. Chamfered area;

[0079] 12. First slider; 121. First surface; 13. Second slider; 131. Second surface; 14. First elastic part; 15. Second elastic part. Detailed Implementation

[0080] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0081] 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.

[0082] 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.

[0083] See appendix Figure 1 -Appendix Figure 12 A stroller push rod reversing mechanism includes a connecting shaft 1 and a main structure 2 and a push rod structure 3, both sleeved on the connecting shaft 1.

[0084] The main structure 2, which is sleeved on the connecting shaft 1, has a first groove 21 with an opening facing the push rod structure 3 at its end. The push rod structure 3, which is sleeved on the connecting shaft 1, has a second groove 31 with an opening facing the main structure 2 at its end. A locking member 4, which is movably sleeved on the connecting shaft 1, is provided between the bottom wall of the first groove 21 and the bottom wall of the second groove 31. The locking member 4 can be inserted into the first groove 21 and the second groove 31 to restrict the relative rotation of the main structure 2 and the push rod structure 3.

[0085] It also includes a traction member 5 and an unlocking member 6 connected together. The traction member 5 is movably mounted on the push rod structure 3, and the unlocking member 6 is movably sleeved on the outside of the connecting shaft 1. The traction member 5 can cause the unlocking member 6 to rotate, and the unlocking member 6 can cause the locking member 4 to move away from the second groove 31 along the length direction of the connecting shaft 1 by rotating itself.

[0086] An elastic element 7 is provided between the locking member 4 and the bottom wall of the first groove 21. The elastic element 7 causes the locking member 4 to have a tendency to move closer to the bottom wall of the second groove 31.

[0087] The relative rotation between the main structure 2 and the push rod structure 3 is achieved through the connecting shaft 1. The connecting shaft 1 is a conventional setting and will not be described in detail here.

[0088] The main structure 2 may include a front support structure, a rear support structure, or a base structure. The main structure 2 itself is not an innovative feature of this embodiment.

[0089] The push rod structure 3 may include a U-shaped push rod 32 (existing configuration). The push rod structure 3 may have two ends sleeved on the connecting shaft 1 (existing configuration can be referred to in the accompanying drawings, hereinafter referred to as connecting ends 33). For ease of explanation, this embodiment is described with the push rod structure 3 having one connecting end 33 sleeved on the connecting shaft 1. However, it is understood that setting two connecting ends 33 is a conventional method, and this application may include this configuration.

[0090] The main structure 2, fitted onto the connecting shaft 1, has a first groove 21 with an opening facing the push rod structure 3. The push rod structure 3, fitted onto the connecting shaft 1, has a second groove 31 with an opening facing the main structure 2. A locking member 4, movably fitted onto the connecting shaft 1, is provided between the bottom walls of the first groove 21 and the second groove 31. The locking member 4 is protected by the first groove 21 and the second groove 31, thus improving its service life. Furthermore, even if the locking member 4 is thicker to increase structural strength, it avoids occupying too much lateral space, effectively controlling the width of the stroller push rod 32 reversing mechanism in this embodiment. Based on this design, the locking member 4 can simultaneously insert into the first groove 21 and the second groove 31 to restrict the relative rotation of the main structure 2 and the push rod structure 3, effectively locking the push rod structure 3 and preventing it from moving freely and posing a safety risk.

[0091] The traction component 5 is movably mounted on the push rod structure 3. For example, the traction component 5 includes a slider and a steel wire rope connected together. The slider is slidably mounted on the push rod 32 of the push rod structure 3. The steel wire rope can be pulled by sliding the slider, and then the unlocking component 6 can be pulled by the steel wire rope to rotate. It should be noted that the traction component 5 itself is not an innovative feature of this embodiment.

[0092] The unlocking element 6 is movably sleeved on the outside of the connecting shaft 1. The traction element 5 can cause the unlocking element 6 to rotate. The unlocking element 6 can cause the locking element 4 to move along the length direction of the connecting shaft 1 away from the second groove 31 by rotating itself. The implementation method is conventional. For example, the unlocking element 6 and the locking element 4 each have an inclined surface (not shown in the figure). The rotation of the unlocking element 6 is converted into the linear motion of the locking element 4 by the interaction of the two inclined surfaces. This is the conventional direction conversion setting on existing strollers, which will not be described in detail here.

[0093] It should be noted that the unlocking component 6 can be movably fitted onto the connecting shaft 1, but is not limited to this. For example, the connecting end 33 of the push rod structure 3 has a cylindrical structure, and the connecting shaft 1 is inserted into the circular hole on the cylindrical structure to install the push rod structure 3. In this case, the unlocking component 6 can be movably fitted onto the cylindrical structure, which conforms to the setting that the unlocking component 6 is movably fitted onto the outside of the connecting shaft 1. It should also be noted that the unlocking component 6 itself is not an innovative point in this embodiment.

[0094] An elastic element 7 is provided between the locking element 4 and the bottom wall of the first groove 21. The elastic element 7 causes the locking element 4 to have a tendency to move closer to the bottom wall of the second groove 31, so that after the locking element 4 is moved away from the second groove 31 by the unlocking element 6, it can be automatically reset into the second groove 31 in the future, so that it can be automatically locked again after the push rod structure 3 changes direction.

[0095] In summary, the push rod structure 3 in this embodiment can reverse direction, making it suitable for both unidirectional and bidirectional strollers. Furthermore, the push rod structure 3 enables quick locking and unlocking, reduces the time required for reversing direction, and maintains stability before and after reversing, thereby improving the user's reversing experience. The push rod 32 reversing mechanism in this embodiment can also be applied to other types of strollers, such as those used for loading goods.

[0096] See appendix Figure 3 - Appendix Figure 8 In this embodiment, the first groove 21 includes a first main groove 211 and a plurality of first sub-grooves 212 communicating with the edge region of the first main groove 211. The first main groove 211 is coaxially arranged with the connecting shaft 1.

[0097] The second groove 31 includes a second main groove 311 and a plurality of second sub-grooves 312 communicating with the edge region of the second main groove 311. The second main groove 311 is coaxially arranged with the connecting shaft 1.

[0098] The locking member 4 includes a connecting part 41 and a plurality of locking parts 42 connected to the edge portion of the connecting part 41. The connecting part 41 is movably sleeved on the outside of the connecting shaft 1. Each locking part 42 can be inserted into each of the first sub-slots 212 and each of the second sub-slots 312 to restrict the relative rotation between the main body structure 2 and the push rod structure 3.

[0099] Taking the first groove 21 as an example, each first sub-groove 212 is arranged around the first main groove 211 in the circumferential direction.

[0100] The first main groove 211 and the second main groove 311 are used to accommodate the connecting part 41, and the first sub-groove 212 and the second sub-groove 312 are used to accommodate the locking part 42. These corresponding structural shapes are adapted to each other, and can be understood with reference to the attached drawings. The locking member 4 as a whole can be gear-shaped.

[0101] Taking a single locking part 42 as an example, when one part of it is accommodated in the first sub-slot 212 and the other part is accommodated in the second sub-slot 312, if the push rod structure 3 wants to rotate, it needs to drive the locking part 42 to rotate. However, the locking part 42 is limited by the first sub-slot 212, resulting in the push rod structure 3 being locked. The arrangement of multiple locking parts 42 can ensure the strength and locking effect of the locking member 4. For example, if a single locking part 42 wears down, the push rod structure 3 may be able to rotate with a very small amplitude, but the arrangement of multiple locking parts 42 can avoid this problem as much as possible.

[0102] See appendix Figure 4 Appendix Figure 5 With appendix Figure 8In this embodiment, the wall portion of each first sub-slot 212 facing the opening of the second sub-slot 312 is chamfered, and the wall portion of each second sub-slot 312 facing the opening of the first sub-slot 212 is also chamfered.

[0103] Along the length direction of the connecting shaft 1, the edge regions at both ends of each locking part 42 are chamfered.

[0104] Taking the first sub-slot 212 as an example, the first sub-slot 212 has an opening facing the first main slot 211, and the edge area of ​​the opening can also be chamfered.

[0105] In this section, by chamfering these areas to form chamfered areas 11, the locking part 42 can be easily inserted into the first sub-slot 212 and the second sub-slot 312, improving the smoothness of this process, avoiding jamming problems, and thus improving the user experience.

[0106] It should be noted that if we take the connection end 33 as two, it can be understood that the wall of each first sub-slot 212 is chamfered at the opening of the adjacent (or corresponding) second sub-slot 312.

[0107] See appendix Figure 5 In this embodiment, the locking member 4 is recessed on one side of the bottom wall of the first groove 21 to form a third groove 43. A compression spring 8 is movably disposed in the third groove 43. The compression spring 8 extends along the length direction of the connecting shaft 1 and constitutes the elastic member 7.

[0108] The elastic element 7 is composed of a compression spring 8, which has a simple structure. The compression spring 8 extends along the length of the connecting shaft 1, which can stably realize the reset of the locking element 4.

[0109] The compression spring 8 can be quickly installed by setting the third groove 43, and the compression spring 8 can be moved without affecting its stretching and contraction, thus not affecting the purpose of resetting the locking part 4.

[0110] The length of the compression spring 8 in the unforced state (hereinafter referred to as the initial length) is not limited. The distance between the bottom wall of the first groove 21 and the bottom wall of the third groove 43 is set to A. Preferably, the initial length of the compression spring 8 is equal to A.

[0111] In this embodiment, the third groove 43 is coaxially arranged with the connecting shaft 1;

[0112] See appendix Figure 5 And / or, a guide member 9 is connected to the bottom wall of the third groove 43, and the compression spring 8 is movably sleeved on the guide member 9.

[0113] Preferably, the third groove 43, the connecting shaft 1, and the guide member 9 are coaxially arranged to avoid interference with the arc-shaped limiting hole 44 described below. The guide member 9 is provided with a through hole for the connecting shaft 1 to pass through.

[0114] The guide member 9 can limit the deformation direction of the compression spring 8, so that it can only stretch and contract along the length direction of the connecting shaft 1. At this time, even if the cross-sectional dimension of the third groove 43 is larger than the cross-sectional dimension of the compression spring 8, it can limit the range of motion of the compression spring 8 (such as preventing it from moving radially along the connecting shaft 1), so that it can be used to stably realize the reset of the locking member 4.

[0115] See appendix Figure 4 - Appendix Figure 5 In this embodiment, the edge region of the locking member 4 is provided with an arc-shaped limiting hole 44 that extends through the length direction of the connecting shaft 1;

[0116] The second groove 31 is fixedly provided with a plug-in 10 extending along the length direction of the connecting shaft 1. A portion of the plug-in 10 extends out of the second groove 31 for insertion and assembly with the arc-shaped limiting hole 44.

[0117] The locking part 42 may have an arc-shaped limiting hole 44.

[0118] The connector 10 rotates with the push rod structure 3 around the axis of the connecting shaft 1. The connector 10 is inserted and assembled with the arc-shaped limiting hole 44, which can limit the bidirectional rotation angle of the push rod structure 3, remind the operator whether the rotation is in place, and help the compression spring 8 to stably reset the locking part 4, so that the push rod structure 3 can still be automatically locked after reversing direction. The shape and extension direction of the arc-shaped limiting hole 44 and the extension direction of the connector 10 are adapted to the rotation process of the push rod structure 3.

[0119] The locking member 4 is restricted by the first groove 21 and cannot rotate around the connecting shaft 1. At this time, it is only necessary to open the arc-shaped limiting hole 44 on the locking member 4, and it is not necessary to open the arc-shaped limiting hole 44 on the main structure 2.

[0120] See appendix Figure 4 - Appendix Figure 5 In this embodiment, the connector 10 has a horizontally extending arc-shaped connector end 101, which is used to be connected and assembled with the arc-shaped limiting hole 44. The arc-shaped limiting hole 44 can limit the rotation angle of the push rod structure 3 relative to the main body structure 2 by limiting the range of movement of the arc-shaped connector end 101.

[0121] The arc-shaped insertion end 101 is inserted and assembled with the arc-shaped limiting hole 44, which can limit the angle of bidirectional rotation of the push rod structure 3, remind the operator whether the rotation is in place, facilitate the stable reset of the locking element 4 by the compression spring 8, and enable the push rod structure 3 to be automatically locked after reversing direction. The shape and extension direction of the arc-shaped insertion end 101 are adapted to the rotation process of the push rod structure 3, and can move smoothly within the arc-shaped limiting hole 44.

[0122] See appendix Figure 9 - Appendix Figure 12 In some embodiments, the main structure includes a support portion 22, a front support structure 23, and a rear support structure 24. Both the support portion 22 and the rear support structure 24 are sleeved on a connecting shaft, and the front support structure 23 is rotatably mounted on the rear support structure 24. The support portion 22, the rear support structure 24, and the push rod structure all rotate around a first axis, while the front support structure 23 rotates around a second axis. The first axis and the second axis are parallel (but do not coincide). A first groove is provided on the support portion 22, and an arc-shaped through hole 221 is provided on the support portion 22 corresponding to the connector. This arc-shaped through hole 221 communicates with the first groove to allow the connector to pass through, thereby pushing the first slider 12 and the second slider 13. The rear support structure 24 has a fourth groove 241 with an opening facing the arc-shaped through hole 221 at its end near the connecting shaft. A first slider 12 and a second slider 13 slide within the fourth groove 241. A first elastic portion 14 is provided between the first slider 12 and the wall of the fourth groove 241, and a second elastic portion 15 is provided between the second slider 13 and the wall of the fourth groove 241. The first slider 12 and the second slider 13 move along a straight line or an arc, with their directions of movement forming an angle. During the reversing process of the push rod structure, the connector can first push the first slider 12 (acting on the first surface 121) to compress the first elastic portion 14, and then push the second slider 13 (acting on the second surface 131) to compress the second elastic portion 15. When the connector does not apply pressure to the first slider 12 or the second slider 13, both can return to their original position due to the elastic force of the corresponding first elastic portion 14 or second elastic portion 15. Taking the second slider 13 as an example, a traction line (not shown in the figure) can be connected to the second slider 13. One end of the traction line can be connected to a locking pin (not shown in the figure). The locking pin can be used to restrict the relative rotation between the front support structure 23 and the rear support. The front support structure 23 can be locked and unlocked by reciprocating the locking pin in a predetermined direction. This is not an innovation of this embodiment and will not be described in detail here.

[0123] 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 stroller push rod reversing mechanism, characterized in that: It includes a connecting shaft (1) and a main structure (2) and a push rod structure (3) both sleeved on the connecting shaft (1); The main structure (2) has a first groove (21) with an opening facing the push rod structure (3) at the end sleeved on the connecting shaft (1). The push rod structure (3) has a second groove (31) with an opening facing the main structure (2) at the end sleeved on the connecting shaft (1). A locking member (4) is provided between the bottom wall of the first groove (21) and the bottom wall of the second groove (31) and is movably sleeved on the connecting shaft (1). The locking member (4) can restrict the relative rotation of the main structure (2) and the push rod structure (3) by inserting into the first groove (21) and the second groove (31). It also includes a traction member (5) and an unlocking member (6) connected together. The traction member (5) is movably mounted on the push rod structure (3), and the unlocking member (6) is movably sleeved on the outside of the connecting shaft (1). The traction member (5) can cause the unlocking member (6) to rotate, and the unlocking member (6) can cause the locking member (4) to move away from the second groove (31) along the length direction of the connecting shaft (1) by rotating itself. An elastic element (7) is provided between the locking member (4) and the bottom wall of the first groove (21), which causes the locking member (4) to have a tendency to move closer to the bottom wall of the second groove (31).

2. The stroller push rod reversing mechanism according to claim 1, characterized in that: The first groove (21) includes a first main groove (211) and a plurality of first sub-grooves (212) connected to the edge region of the first main groove (211). The first main groove (211) is coaxially arranged with the connecting shaft (1). The second groove (31) includes a second main groove (311) and a plurality of second sub-grooves (312) communicating with the edge region of the second main groove (311). The second main groove (311) is coaxially arranged with the connecting shaft (1). The locking member (4) includes a connecting part (41) and a plurality of locking parts (42) connected to the edge portion of the connecting part (41). The connecting part (41) is movably sleeved on the outside of the connecting shaft (1). Each locking part (42) can be inserted into each of the first sub-slots (212) and each of the second sub-slots (312) to restrict the relative rotation of the main structure (2) and the push rod structure (3).

3. The stroller push rod reversing mechanism according to claim 2, characterized in that: The wall of each first sub-slot (212) facing the opening of the second sub-slot (312) is chamfered, and the wall of each second sub-slot (312) facing the opening of the first sub-slot (212) is chamfered. Along the length direction of the connecting shaft (1), the edge regions at both ends of each locking part (42) are chamfered.

4. The stroller push rod reversing mechanism according to claim 1, characterized in that: The locking member (4) is recessed on one side of the bottom wall of the first groove (21) to form a third groove (43). A compression spring (8) is movably provided in the third groove (43). The compression spring (8) extends along the length direction of the connecting shaft (1) and constitutes the elastic member (7).

5. The stroller push rod reversing mechanism according to claim 4, characterized in that: The third groove (43) is coaxially arranged with the connecting shaft (1); And / or, a guide (9) is connected to the bottom wall of the third groove (43), and the compression spring (8) is movably sleeved on the guide (9).

6. A stroller push rod reversing mechanism according to any one of claims 1-5, characterized in that: The locking member (4) has an arc-shaped limiting hole (44) that extends through the length of the connecting shaft (1) on its edge area. The second groove (31) is fixedly provided with a plug (10) extending along the length direction of the connecting shaft (1), and a portion of the plug (10) extends out of the second groove (31) for insertion and assembly with the arc-shaped limiting hole (44).

7. The stroller push rod reversing mechanism according to claim 6, characterized in that: The connector (10) has a horizontally extending arc-shaped connector end (101) for insertion and assembly with the arc-shaped limiting hole (44), which can limit the rotation angle of the push rod structure (3) relative to the main body structure (2) by limiting the range of movement of the arc-shaped connector end (101).

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