Safety buckle for a baby stroller

Abstract

The utility model relates to the field of safety buckle, put forward a kind of safety buckle of baby stroller, including shoulder strap buckle subassembly, clamping structure and buckle body, shoulder strap buckle subassembly is constituted by first shoulder strap buckle and second shoulder strap buckle horizontal lap joint, and it is equipped with horizontal direction anti -disengagement structure between two, form stable installation platform. Clamping structure is fixed on the upper surface of first shoulder strap buckle, include mounting seat, the locking piece of vertically telescopic and the horizontal clamping groove of being arranged in the two side walls of mounting seat. Buckle body, pressing piece and the clamping piece of horizontally telescopic are composed by buckle body, pressing piece and the clamping piece of horizontally telescopic, clamping piece cooperates with clamping groove and can horizontally get out, buckle body is equipped with the locking hole for the insertion of locking piece, and pressing piece is used to drive locking piece to separate locking hole. The safety buckle realizes the double linkage locking mechanism of vertical direction locking by clamping piece, locking piece realizes horizontal direction locking, to fundamentally eliminate the risk of single point false touch unlocking, and simultaneously achieve the unity of operation convenience and use high reliability.

Description

Technical Field

[0001] This utility model relates to the field of safety buckle technology, and in particular to a safety buckle for a baby stroller. Background Technology

[0002] The stroller safety buckle is a crucial safety device in a stroller, mainly consisting of a buckle body and components such as waist belt buckles and shoulder strap buckles that can be fastened to the buckle body. Each component typically has strap holes for attaching and securing the baby's harness. Although small in size, this safety buckle is used extremely frequently, and its ease of operation and reliability are directly related to the personal safety of infants and toddlers.

[0003] Currently, most baby stroller safety buckles on the market use a single-button unlocking mechanism. This type of structure poses a significant safety hazard: during use, the baby's body parts (such as the abdomen or palm) or items in the stroller can easily and unintentionally touch the single unlocking button, causing the safety buckle to open unintentionally, thus freeing the baby and creating a risk of falling.

[0004] To address the issue of accidental activation of single buttons, existing technologies have proposed several improvements. For example, Chinese patent CN201745636U discloses a "double-sided button safety buckle for baby strollers." This safety buckle has buttons on both the front and back of the buckle body. Both buttons are linked to a connector via a hook structure; both buttons must be pressed simultaneously to disengage the connector from the buckle body and unlock it. This dual-button design effectively prevents accidental activation of the safety buckle due to single-point accidental activation, improving reliability.

[0005] However, this double-sided button safety buckle still has structural shortcomings. Its main flaw lies in the overly cumbersome assembly and disassembly process. During installation, the operator must first connect the shoulder strap buckle and waist belt buckle, and then install this assembly onto the buckle body. This process requires precisely aligning the strap hole on the shoulder strap buckle with the protruding top insert of the buckle body, while simultaneously inserting the waist belt buckle's connector accurately into the buckle body's buckle chamber. This series of operations demands precise alignment of multiple components in a confined space, requiring a high level of installation skill and making it very inconvenient for users (especially in low light or in a hurry) to quickly assemble, disassemble, and adjust, resulting in a poor user experience. Utility Model Content

[0006] In view of this, this utility model proposes a safety buckle for baby strollers to solve the problem that safety and convenience are difficult to balance in existing safety buckles.

[0007] The technical solution of this utility model is implemented as follows:

[0008] This utility model provides a safety buckle for a baby stroller, including:

[0009] A shoulder strap buckle assembly, comprising a first shoulder strap buckle and a second shoulder strap buckle, wherein the second shoulder strap buckle is located on one side of the first shoulder strap buckle and partially overlaps the upper surface of the first shoulder strap buckle, and an anti-slip structure is provided between the first shoulder strap buckle and the second shoulder strap buckle in a horizontal direction;

[0010] A snap-fit ​​structure is fixedly installed on the upper surface of the first shoulder strap buckle. The snap-fit ​​structure includes a mounting base and a locking member that can extend and retract vertically within the mounting base. Horizontally extending snap-fit ​​grooves are respectively provided on the opposite side walls of the mounting base.

[0011] The buckle body includes a buckle body, a pressing member, and a snap-fit ​​member. The snap-fit ​​member is horizontally telescopically disposed at the bottom of the buckle body. The snap-fit ​​member cooperates with the snap-fit ​​groove and can be disengaged along the horizontal direction of the snap-fit ​​groove. The buckle body has a locking hole for inserting a locking member. The pressing member is disposed at the top of the buckle body and is used to drive the locking member out of the locking hole.

[0012] Based on the above technical solution, preferably, the first shoulder strap buckle includes a first base and a first strap member connected to one end of the first base in the length direction. The top surfaces of both ends of the first base in the length direction are respectively provided with stepped grooves, and the mounting base is fixedly disposed in the middle of the top surface of the first base.

[0013] The second shoulder strap buckle includes a second base and a second strap member connected to one end of the second base along its length. The second base has overlapping portions on both sides along its length that mate with the stepped groove.

[0014] The anti-detachment structure includes a recess and a protrusion disposed between the stepped groove and the overlapping part, with the protrusion cooperating with the recess.

[0015] Based on the above technical solution, preferably, it also includes two belt buckles arranged symmetrically. The belt buckle includes a third strap and a connector fixedly connected to the third strap. The top surfaces of the opposite sides of the first base and the second base are provided with mounting grooves. The opening direction of the mounting groove is perpendicular to the length direction of the first base. The connector is detachably assembled in the mounting groove.

[0016] Based on the above technical solution, preferably, the connector is provided with a positioning groove along the length direction of the first base, and the top surfaces of the first base and the second base are provided with notches that are opposite to the positioning groove. The bottom surface of the notches is flush with the bottom surface of the positioning groove, and the bottom surface of the buckle body is provided with a positioning protrusion that cooperates with the positioning groove.

[0017] Based on the above technical solution, preferably, the sidewalls of the first substrate and the second substrate facing away from each other are provided with insertion grooves, the insertion grooves are located below the mounting grooves, and the connectors are provided with insertion protrusions that are connected to the insertion grooves.

[0018] Based on the above technical solution, preferably, a snap-fit ​​connection structure is provided between the insertion slot and the insertion protrusion.

[0019] Based on the above technical solution, preferably, the buckle body further includes a fourth strap member fixedly connected to one end of the buckle body along its length direction. The bottom surface of the buckle body is provided with an assembly groove along its length direction for inserting the snap-fit ​​structure into the assembly groove. The locking hole is located on the top surface inside the assembly groove. The assembly groove extends out of the end of the buckle body away from the fourth strap member. The side wall of the assembly groove is provided with an installation channel. The snap-fit ​​member is retractably disposed in the installation channel.

[0020] Based on the above technical solution, preferably, the snap-fit ​​component is a magnetic component, and the mounting base is provided with a first magnetic component that is magnetically attracted to the snap-fit ​​component, and the edge of the mounting base corresponding to the snap-fit ​​groove above the snap-fit ​​groove has a guide bevel.

[0021] Based on the above technical solution, preferably, a second magnetic element that attracts each other is provided between the stepped groove and the overlapping part.

[0022] Based on the above technical solution, preferably, the buckle body is provided with a third magnetic element that is attracted to the first magnetic element.

[0023] The present invention has the following advantages over the prior art:

[0024] (1) The safety buckle of the baby stroller disclosed in this utility model is provided by setting up an installation platform consisting of a first shoulder strap buckle and a second shoulder strap buckle with horizontal overlap and anti-detachment structure, and a dual linkage locking scheme of "vertical locking of the snap-fit ​​and horizontal locking of the locking part", which realizes independent locking of the safety buckle in the vertical and horizontal directions, thereby fundamentally eliminating the risk of single-point accidental unlocking, and achieving the unity of convenient operation and high reliability of use.

[0025] (2) By integrating the strap connection, platform overlap and snap-fit ​​functions into a first base, the integration and modularization of components are realized, the overall structure is simplified, and the structural strength and functional integrity of the first shoulder strap buckle are guaranteed.

[0026] (3) By setting up a quick docking scheme of “step groove-overlapping part” and a mechanical interlocking anti-detachment scheme of “recessed part-protruding part”, the quick and accurate positioning and reliable horizontal locking between the first and second shoulder strap buckles are realized, which significantly improves the assembly convenience and connection reliability of the safety buckle basic structure.

[0027] (4) By setting up a linkage locking scheme of "positioning protrusion-positioning groove", the horizontal locking state of the buckle body and the vertical locking state of the belt buckle are cleverly linked, realizing the linkage effect of "locking together and unlocking together". This scheme ensures that the belt buckle is firmly locked and will not accidentally come out during use, and also ensures that the belt buckle can be easily disassembled after the buckle body is unlocked, thus taking into account the convenience of disassembly and maintenance under the premise of extremely high safety.

[0028] (5) By setting up a collaborative scheme that combines "magnetic attraction" and "guide bevel", magnetic force is used to achieve pre-alignment and enhance locking force. At the same time, the mechanical bevel ensures smooth retraction of the snap-fit ​​parts. Together, the operational tolerance of the safety buckle locking process is improved and the smoothness of the action is optimized, which significantly enhances the user experience and product reliability. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is an exploded view of the safety buckle for the baby stroller disclosed in this utility model;

[0031] Figure 2 This is a schematic diagram of the shoulder strap buckle assembly and waist belt buckle assembly structure disclosed in this utility model;

[0032] Figure 3 This is a three-dimensional structural diagram of the first shoulder strap buckle disclosed in this utility model;

[0033] Figure 4 This is a three-dimensional structural diagram of the second shoulder strap buckle disclosed in this utility model;

[0034] Figure 5 This is a three-dimensional structural diagram of the belt buckle disclosed in this utility model;

[0035] Figure 6 This is a three-dimensional structural diagram of the buckle body disclosed in this utility model;

[0036] Figure 7 This is a top view of the safety buckle for the baby stroller disclosed in this utility model;

[0037] Figure 8 for Figure 7 Planar sectional view at point AA;

[0038] Figure 9 for Figure 7 Plan view at point BB;

[0039] Figure label:

[0040] 1. Shoulder strap buckle assembly; 11. First shoulder strap buckle; 12. Second shoulder strap buckle; 111. First base; 112. First strap component; 1111. Step groove; 121. Second base; 122. Second strap component; 1211. Overlapping part; 13. Anti-slip structure; 131. Recessed part; 132. Protruding part; 14. Mounting groove; 15. Notch; 16. Insertion groove; 17. Second magnetic component; 161. Buckle;

[0041] 2. Snap-fit ​​structure; 21. Mounting base; 22. Locking element; 211. Snap-fit ​​groove; 23. First magnetic element; 212. Guide bevel;

[0042] 3. Buckle body; 31. Buckle body; 32. Pressing component; 33. Snap-fit ​​component; 311. Locking hole; 312. Positioning protrusion; 34. Fourth strap component; 313. Assembly groove; 3131. Installation channel; 35. Third magnetic component; 36. Fourth magnetic component;

[0043] 4. Belt buckle; 41. Third strap; 42. Connector; 421. Positioning groove; 422. Insertion protrusion; 4221. Card slot. Detailed Implementation

[0044] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0046] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0047] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0050] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0051] like Figure 1 As shown, combined with Figure 2-9This utility model discloses a safety buckle for a baby stroller, including a shoulder strap buckle assembly 1, a snap-fit ​​structure 2, and a buckle body 3.

[0052] The shoulder strap buckle assembly 1 includes a first shoulder strap buckle 11 and a second shoulder strap buckle 12. The second shoulder strap buckle 12 is horizontally located on one side of the first shoulder strap buckle 11 and partially overlaps the upper surface of the first shoulder strap buckle 11. An anti-slip structure 13 is provided between the first shoulder strap buckle 11 and the second shoulder strap buckle 12 in the horizontal direction.

[0053] The shoulder strap buckle assembly 1 serves as the base and core load-bearing component of the entire safety buckle. Specifically, the second shoulder strap buckle 12 is horizontally positioned on one side of the first shoulder strap buckle 11 and partially overlaps it. The two are interlocked by an anti-detachment structure 13 to prevent horizontal separation under lateral tension, thus forming a stable and fixed-width integral frame. The first shoulder strap buckle 11 and the second shoulder strap buckle 12 can be detachably fitted together to form an installation platform, providing a precise and stable foundation for the subsequent quick alignment, installation, and locking of the buckle body 3. This avoids the cumbersome process of aligning and assembling multiple independent buckles by the user in traditional designs.

[0054] To achieve the installation and locking of the buckle body 3 and the shoulder strap buckle assembly 1, this embodiment has a snap-fit ​​structure 2 fixedly provided on the upper surface of the first shoulder strap buckle 11. The snap-fit ​​structure 2 is the central component connecting the shoulder strap buckle assembly 1 and the buckle body 3. Specifically, it includes a mounting base 21, a vertically retractable locking member 22, and horizontally extending snap-fit ​​grooves 211 provided on both side walls of the mounting base 21.

[0055] This component works in conjunction with the buckle body 3. The horizontally extending snap-fit ​​groove 211 provides a horizontal slide and locking position for the snap-fit ​​part 33 of the buckle body 3, responsible for vertical connection and locking; while the vertically retractable locking part 22 is used to insert into the locking hole 311 of the buckle body 31, responsible for horizontal locking. It decomposes the complex multi-degree-of-freedom connection into two clear and independent actions: "horizontal snap-fit" and "vertical insertion", providing the structural core for realizing a novel, step-by-step dual locking and unlocking mechanism.

[0056] In this embodiment, the mounting base 21 has a mounting cavity with a top opening, and the locking member 22 is disposed in the mounting cavity. The locking member 22 has an elastic member inside the mounting cavity, so that the locking member 22 can extend and retract along the axial direction of the mounting cavity under the action of the elastic member.

[0057] The buckle body 3 is the active component for performing locking and unlocking operations, including the buckle body 31, the pressing member 32, and the latching member 33. The latching member 33 is horizontally telescopically disposed at the bottom of the buckle body 31, cooperates with the aforementioned latching groove 211, and can be disengaged along the horizontal direction of the latching groove 211; the buckle body 31 has a locking hole 311 for the insertion of the locking member 22, and the pressing member 32 is disposed at the top of the buckle body 31 for driving the locking member 22 to disengage from the locking hole 311.

[0058] In this embodiment, the pressing member 32 is disposed on the top of the buckle body 31 and can move up and down along the axial direction of the buckle body 31. There is also an elastic member between the pressing member 31 and the buckle body 31, which allows the pressing member 31 to extend and retract up and down when pressed. The pressing member 31 drives the locking member 22 to move downward and thus disengage from the locking hole 311.

[0059] The buckle body 3 and the snap-fit ​​structure 2 are complementary and indispensable functional modules. During installation, the operator simply places the buckle body 3 on the stable platform formed by the first shoulder strap buckle 11 and the second shoulder strap buckle 12. The snap-fit ​​component 33, being horizontally extendable, will extend beyond the top surface of the mounting base 21 and snap into the snap-fit ​​groove 211, completing the vertical connection and locking. Simultaneously, the locking component 22 will insert into the locking hole 311 of the buckle body 31, completing the horizontal locking. During unlocking, pressing the pressing component 32 drives the locking component 22 out of the locking hole 311, releasing the horizontal constraint on the buckle body 3 and the shoulder strap buckle assembly 1. At this point, the buckle body 3 can slide horizontally, causing the snap-fit ​​component 33 to slide out of the snap-fit ​​groove 211, thus achieving complete separation.

[0060] The buckle 3 and the snap-fit ​​structure 2 work together to achieve an intuitive and reliable two-step unlocking logic: "press to release the horizontal lock first, then slide horizontally to release the vertical connection." This design breaks down the "unlocking" action from a simple "press" into two actions that must be consciously performed in sequence, greatly avoiding accidental locking caused by accidental force in one direction (such as a baby's one-time collision or squeeze), thus ensuring extremely high safety. At the same time, its installation and disassembly process is simple and linear, with excellent convenience.

[0061] The safety buckle for the baby stroller disclosed in this utility model achieves independent locking in both vertical and horizontal directions by setting up an installation platform consisting of a first shoulder strap buckle 11 and a second shoulder strap buckle 12 with horizontally overlapping anti-detachment structure 13, and a dual linkage locking scheme of "vertical locking by snap-fit ​​component 33 and horizontal locking by locking component 22". This fundamentally eliminates the risk of single-point accidental unlocking, while achieving a balance between ease of operation and high reliability in use.

[0062] In some embodiments, the first shoulder strap buckle 11 includes a first base 111 and a first strap member 112 connected to one end of the first base 111 along its length. The first strap member 112 is used to connect to the shoulder strap of the stroller and bears the main pulling force. The first base 111, as the core carrier, has stepped grooves 1111 on its top surfaces at both ends along its length, providing precise positioning and installation interfaces for the overlap of the second shoulder strap buckle 12. A mounting base 21 is fixedly disposed in the middle of the top surface of the first base 111, serving as the supporting foundation for the snap-fit ​​structure 2. The mounting base 21, the first base 111, and the first strap member 112 are integrally formed.

[0063] By integrating the strap connection, platform overlap and snap-fit ​​functions onto a first base 111, the integration and modularization of components are achieved, the overall structure is simplified, and the structural strength and functional integrity of the first shoulder strap buckle 11 itself are guaranteed.

[0064] The second shoulder strap buckle 12 includes a second base 121 and a second strap member 122 connected to one end of the second base 121 along its length. The second base 121 has overlapping portions 1211 on both sides along its length that cooperate with the stepped groove 1111.

[0065] The second shoulder strap buckle 12, through its overlapping portions 1211 on both sides, spans and sits on the stepped grooves 1111 at both ends of the first shoulder strap buckle 11, thereby achieving rapid positioning and assembly of the two components in the vertical direction. This "overlapping portion 1211-stepped groove 1111" mating method forms a very intuitive and easy-to-operate mechanical interface, allowing users to quickly assemble the two shoulder strap buckles into a complete platform without tools or complex alignment, greatly improving the convenience and reliability of assembly.

[0066] In this embodiment, the anti-slip structure 13 is defined as a recess 131 and a protrusion 132 disposed between the stepped groove 1111 and the overlapping portion 1211. When the overlapping portion 1211 of the second shoulder strap buckle 12 is placed in the stepped groove 1111 of the first shoulder strap buckle 11, the protrusion 132 on the overlapping portion 1211 will engage with the recess 131 in the stepped groove 1111. This engagement forms a mechanical interlock on the horizontal plane, effectively resisting horizontal shear forces from all directions and preventing relative horizontal movement or separation of the two parts during use. The above structural scheme constitutes a simple, effective, and reliable anti-slip mechanism, ensuring that the platform formed by the overlapping of the first and second shoulder strap buckles 12 has extremely high integrity and stability, providing a solid and reliable foundation for the subsequent locking operation of the safety buckle.

[0067] It is worth noting that, since the first shoulder strap buckle 11 and the second shoulder strap buckle 12 are assembled by overlapping, they can be prevented from horizontally separating by the anti-detachment structure 13. At the same time, after the buckle body 3 and the snap-fit ​​structure 2 on the first shoulder strap buckle 11 are locked, the second shoulder strap buckle 12 can be limited in the vertical direction between the buckle body 3 and the first shoulder strap buckle 11, ensuring that the second shoulder strap buckle 12 will not come out in the vertical direction. Meanwhile, the entire shoulder strap buckle assembly 1 and the buckle body 3 form a firm and reliable connection and locking structure.

[0068] By setting up a quick docking scheme of "step groove-overlapping part" and a mechanical interlocking anti-detachment scheme of "recessed part-protruding part", the first and second shoulder strap buckles 12 are quickly and accurately positioned and reliably locked horizontally, which significantly improves the assembly convenience and connection reliability of the safety buckle basic structure.

[0069] The safety buckle for the stroller disclosed in this embodiment also includes two symmetrically arranged waist belt buckles 4. Each waist belt buckle 4 includes a third strap member 41 and a connector 42 fixedly connected to the third strap member 41. The waist belt buckle 4 is a functional module in the safety buckle that is parallel and connected to the shoulder strap buckle assembly 1. The third strap member 41 is used to connect the stroller's waist belt and transfer the restraining force of the waist to the safety buckle; the connector 42 serves as an interface component that docks with the shoulder strap buckle assembly 1. By designing the waist belt buckle 4 as an independent module, the shoulder strap and waist belt restraint systems are separated, making the functional division of the entire safety buckle clearer and the structure more modular.

[0070] Mounting grooves 14 are provided on the top surfaces of the first base 111 and the second base 121 on opposite sides. The opening direction of the mounting grooves 14 is perpendicular to the length direction of the first base 111. The mounting grooves 14 provide a clear, directional insertion path and accommodating space for the connector 42 of the belt buckle 4. The connector 42 can be directly inserted into the mounting groove 14 along a direction perpendicular to the length of the base to complete the assembly. It can also be detachably engaged with the mounting groove 14 by snap-fit. Through the snap-fit ​​engagement between the connector 42 and the mounting groove 14, the belt buckle 4 and the shoulder strap buckle assembly 1 can be assembled together.

[0071] Considering that the belt buckle 4 and the shoulder strap buckle assembly 1 are locked together by a snap-fit ​​mechanism, this method has insufficient load-bearing capacity, which may cause the belt buckle 4 to come off the mounting groove 14. To solve the above problem, this embodiment adopts the following technical solution.

[0072] The connector 42 has a positioning groove 421 along the length of the first base 111. The top surfaces of the first base 111 and the second base 121 are provided with notches 15 that are connected to the positioning groove 421. The bottom surface of the notches 15 is flush with the bottom surface of the positioning groove 421. The bottom surface of the fastener 31 is provided with a positioning protrusion 312 that cooperates with the positioning groove 421.

[0073] Using the above technical solution, when the connector 42 of the belt buckle 4 is vertically inserted into the mounting groove 14, its positioning groove 421 aligns with the notch 15 on the base to form a continuous guide groove. Subsequently, when installing the buckle body 31, its bottom positioning protrusion 312 inserts into the positioning groove 421. Crucially, the length direction of the guide groove formed by the positioning groove 421 and the notch 15 is completely consistent with the disengagement / sliding direction of the buckle body 3. When the buckle body 3 is fully locked with the snap-fit ​​structure 2, the positioning protrusion 312 located within the positioning groove 421 blocks the movement path of the connector 42 in the horizontal direction, thus forming an effective mechanical interference to prevent the connector 42 from vertically disengaging from the mounting groove 14.

[0074] The locking state of buckle 3 directly determines the locking state of belt buckle 4. As long as buckle 3 is in the locked position, belt buckle 4 is firmly fixed in shoulder strap buckle assembly 1 and cannot come out. This greatly enhances the integrity and reliability of the entire assembly during use and prevents safety hazards caused by belt buckle 4 accidentally falling off.

[0075] The unlocking and disassembly process of the belt buckle 4 is as follows: When the user presses the pressing piece 32 and slides the buckle body 3 horizontally to unlock, the positioning protrusion 312 on the bottom surface of the buckle body 31 will slide horizontally along the positioning groove 421. Once the positioning protrusion 312 has completely slid out from the notch 15, its horizontal obstruction of the connector 42 immediately disappears. At this time, the vertical upward movement path of the connector 42 is unblocked, and the user can easily pull the belt buckle 4 upward to separate it from the shoulder strap buckle assembly 1. Unlocking requires first unlocking and removing the buckle body 3 before disassembling the belt buckle 4, achieving an orderly, step-by-step unlocking and disassembly process. This design is not only logically clear and intuitive, but also structurally prevents accidental operation, further enhancing safety.

[0076] By setting up a linkage locking scheme of "positioning protrusion-positioning groove", the horizontal locking state of buckle body 3 and the vertical locking state of belt buckle 4 are cleverly linked, achieving a linkage effect of "locking when one locks and unlocking when one unlocks". This scheme ensures that belt buckle 4 is firmly locked and will not accidentally come out during use, while also ensuring that belt buckle 4 can be easily disassembled after buckle body 3 is unlocked. Thus, it takes into account the convenience of disassembly and maintenance while ensuring extremely high safety.

[0077] As some embodiments, the sidewalls of the first base 111 and the second base 121 facing away from each other are provided with insertion grooves 16, the insertion grooves 16 are located below the mounting groove 14, and the connector 42 is provided with insertion protrusions 422 that are connected to the insertion grooves 16.

[0078] As the connector 42 of the belt buckle 4 is inserted downwards into the mounting groove 14, the insertion protrusion 422 on the connector 42 is simultaneously inserted horizontally (or slightly inclined) into the insertion groove 16 on the side wall of the base. This is equivalent to adding a horizontal auxiliary connection point in addition to the main vertical insertion connection. It forms a dual connection mechanism of "one vertical and one horizontal". The cooperation between the insertion protrusion 422 and the insertion groove 16 can effectively resist the shaking or twisting that may occur in the connector 42 within the mounting groove 14, greatly enhancing the rigidity and stability of the connection between the belt buckle 4 and the shoulder strap buckle assembly 1, and preventing loosening of the connection due to long-term use or accidental lateral force.

[0079] As one embodiment, a snap-fit ​​connection structure is provided between the insertion slot 16 and the insertion protrusion 422.

[0080] When the insertion protrusion 422 on the connector 42 is inserted into the insertion groove 16 on the side wall of the base, the snap-fit ​​connection structure comes into play. Specifically, the inner wall of the insertion groove 16 has an elastic snap 161, and the insertion protrusion 422 is provided with a matching slot 4221. When inserted into place, it makes a "click" sound and produces a clear sense of completion, achieving mechanical self-locking. Its technical effect is that it provides a positive locking mechanism. This structure not only effectively prevents the insertion protrusion 422 from accidentally coming loose from the insertion groove 16, ensuring the durable reliability of the auxiliary connection, but more importantly, it provides the user with clear auditory and tactile feedback, allowing the user to clearly perceive that the belt buckle 4 has been installed in place, thereby improving the intuitiveness of operation and user experience.

[0081] Specifically, in some application scenarios, the belt buckle 4 needs to be assembled with the shoulder strap buckle first. Since the mounting groove 14 and the connector 42 are clearance fits, and the insertion protrusion 422 and the insertion groove 16 are also clearance fits, although they can restrict the vertical movement of the belt buckle 4 and the shoulder strap buckle, they cannot restrict the horizontal movement. This can cause the belt buckle 4 to come off relative to the shoulder strap buckle, especially when the shoulder strap buckle is placed vertically. Therefore, by setting a buckle 161 between the insertion protrusion 422 and the insertion groove 16, the insertion protrusion 422 can be effectively prevented from accidentally coming off the insertion groove 16, which facilitates the subsequent assembly of the two shoulder strap buckles and the buckle body 3.

[0082] As some embodiments, the buckle body 3 also includes a fourth strap 34 fixedly connected to one end of the buckle body 31 in the length direction. The fourth strap 34 is used to connect another part of the stroller (such as the leg strap located between the child's legs) and transmit the restraining force to the buckle body 3.

[0083] The bottom surface of the buckle body 31 is provided with an assembly groove 313 along its length direction. The assembly groove 313 extends out of the end of the buckle body 31 away from the fourth strap member 34, and is used for the insertion of the snap-fit ​​structure 2. At the same time, the end of the assembly groove 313 away from the fourth strap member 34 is open, so that when the buckle body 3 is horizontally removed, the snap-fit ​​structure 2 can slide relative to the assembly groove 313.

[0084] The locking hole 311 is located on the top surface of the assembly groove 313. The side wall of the assembly groove 313 has an installation channel 3131, and the snap-fit ​​member 33 is retractably disposed within the installation channel 3131. The installation channel 3131 provides a precise movement trajectory and accommodating space for the snap-fit ​​member 33. When the buckle 3 is pressed down and fitted onto the snap-fit ​​structure 2, the snap-fit ​​member 33 will first contact the edge of the mounting base 21, and then retract into the installation channel 3131 after being subjected to force. As the buckle 3 continues to advance, when the snap-fit ​​member 33 is aligned with the snap-fit ​​groove 211, it will quickly pop out and snap into the snap-fit ​​groove 211, thereby completing the horizontal locking.

[0085] As one implementation, an elastic element (such as a spring) may be provided inside the mounting channel 3131 to enable the snap-fit ​​member 33 to be horizontally retractable.

[0086] In some other embodiments, the snap-fit ​​33 is a magnetic component, and a first magnetic component 23 that is magnetically attracted to the snap-fit ​​33 is provided in the mounting base 21.

[0087] Specifically, when the buckle 3 is pressed down and the mounting groove 313 is fitted onto the mounting base 21, a magnetic attraction is generated between the snap-fit ​​element 33 (magnetic element) and the first magnetic element 23 inside the mounting base 21. This magnetic force begins to act even before the two are in contact, effectively guiding the snap-fit ​​element 33 towards the snap-fit ​​groove 211, providing auxiliary alignment and attraction. The use of magnetic force significantly reduces the operational precision required for locking. Even with slight alignment deviations, the magnetic force can automatically correct, "attracting" the snap-fit ​​element 33 into the correct position, improving the success rate and convenience of locking. At the same time, the magnetic attraction also enhances the holding force after locking.

[0088] The mounting base 21 above the snap-fit ​​slot 211 has a guide bevel 212 on its edge. When the distance is far, the magnetic force mainly plays a guiding and pre-aligning role. When the distance is close, when the snap-fit ​​33 contacts the guide bevel 212, the mechanical bevel ensures that it can retract smoothly. When the snap-fit ​​33 is aligned with the snap-fit ​​slot 211, the snap-fit ​​33 is quickly pushed into the slot to complete the locking through the magnetic attraction.

[0089] By setting up a collaborative scheme that combines "magnetic attraction" and "guide bevel," magnetic force is used to achieve pre-alignment and enhance locking force. At the same time, the mechanical bevel ensures smooth retraction of the locking component 33. Together, these measures improve the operational tolerance and optimize the smoothness of the action during the locking process of the safety buckle, significantly enhancing the user experience and product reliability.

[0090] In some embodiments, a second magnetic element 17 is provided between the stepped groove 1111 and the overlapping portion 1211 to attract each other. With this configuration, after the first shoulder strap buckle 11 and the second shoulder strap buckle 12 are assembled with the belt buckle 4, the overlapping portion 1211 of the second shoulder strap buckle 12 is overlapped onto the stepped groove 1111 of the first shoulder strap buckle 11. The mutual attraction between the second magnetic element 17 inside the stepped groove 1111 and the overlapping portion 1211 prevents the first shoulder strap buckle 11 and the second shoulder strap buckle 12 from detaching in the vertical direction, facilitating the formation of a sturdy whole and making it easier to install the buckle body 3.

[0091] It is worth noting that when the shoulder strap buckle assembly 1 and the two waist belt buckles 4 are assembled as a whole, the upper part of the whole forms an assembly space, which makes it easy to place the buckle body 31 in the assembly space. The outline formed by the first strap 112, the second strap 122 and the two third straps 41 is compatible with the outline of the buckle body 31. This allows the buckle body 31 to be precisely locked and engaged with the snap-fit ​​structure 2 after being placed in the assembly space.

[0092] In some embodiments, the buckle body 31 is provided with a third magnetic element 35 that is attracted to the first magnetic element 23, and the buckle body 31 is also provided with a fourth magnetic element 36 that is attracted to the second magnetic element 17.

[0093] By setting the above-mentioned magnetic method, when the buckle body 3 is placed in the assembly space, the snap fastener 33 is quickly snapped into the snap fastener slot 211 by magnetic adsorption, so as to achieve more labor-saving assembly locking.

[0094] Specifically, the third magnetic element 35 inside the buckle body 31 is located in the middle, and the first magnetic element 23 is located in the middle of the first shoulder strap buckle 11. The third magnetic element 35 and the first magnetic element 23 are magnetically attracted to each other. One end of the buckle body 31 in the length direction has a fourth magnetic element 36, which is used to magnetically attract the second magnetic element 17 on the overlapping part 1211 of the second shoulder strap buckle 12. With this configuration, when the shoulder strap buckle assembly 1 and the waist belt buckle 4 are assembled, and then the buckle body 3 is assembled, the buckle body 31 is placed horizontally directly above the shoulder strap buckle assembly 1. The magnetic attraction in the vertical direction can instantly attract the buckle body 1 to the shoulder strap buckle assembly 1, thereby achieving rapid locking of the buckle body 1 and the snap-fit ​​structure 2 in the horizontal and vertical directions.

[0095] The working principle of the safety buckle for the baby stroller disclosed in this utility model is as follows:

[0096] During assembly, firstly, the connecting parts 42 of the two belt buckles 4 are vertically inserted into the mounting grooves 14 on the sides of the base of the first and second shoulder strap buckles 12 to complete the pre-fixation; then, the overlapping part 1211 of the second shoulder strap buckle 12 is horizontally overlapped on the stepped groove 1111 of the first shoulder strap buckle 11, and the horizontal anti-dislodgement is achieved through the cooperation of the recessed part 131 and the protruding part 132, forming a complete shoulder strap buckle platform; finally, the mounting groove 313 of the buckle body 3 is vertically fitted onto the snap-fit ​​structure 2 of the platform, and the buckle body 3 is pressed down to make the snap-fit ​​part 33 snap into the snap-fit ​​groove 211 to achieve vertical locking, while the locking part 22 pops into the locking hole 311 to achieve horizontal locking. When unlocking, first press the pressing part 32 to drive the locking part 22 out of the locking hole 311 to release the horizontal constraint, then slide the buckle body 3 horizontally to make the snap fastener 33 disengage from the snap fastener groove 211, thus completing the separation of the buckle body 3. The first shoulder strap buckle 11 and the second shoulder strap buckle 12 separate vertically, and then pull the waist belt buckle 4 out of the shoulder strap buckle to realize the separation operation of each component of the safety buckle.

[0097] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safety buckle for a baby stroller, characterized in that, include: Shoulder strap buckle assembly (1), the shoulder strap buckle assembly (1) includes a first shoulder strap buckle (11) and a second shoulder strap buckle (12), the second shoulder strap buckle (12) is horizontally located on one side of the first shoulder strap buckle (11) and partially overlaps the upper surface of the first shoulder strap buckle (11), and an anti-slip structure (13) is provided between the first shoulder strap buckle (11) and the second shoulder strap buckle (12) in the horizontal direction; The snap-fit ​​structure (2) is fixedly set on the upper surface of the first shoulder strap buckle (11). The snap-fit ​​structure (2) includes a mounting base (21) and a locking member (22) that can extend vertically within the mounting base (21). Horizontally extending snap-fit ​​grooves (211) are respectively provided on the opposite side walls of the mounting base (21). The buckle body (3) includes a buckle body (31), a pressing member (32), and a snap-fit ​​member (33). The snap-fit ​​member (33) is horizontally telescopically disposed at the bottom of the buckle body (31). The snap-fit ​​member (33) cooperates with the snap-fit ​​groove (211) and can be disengaged along the horizontal direction of the snap-fit ​​groove (211). The buckle body (31) is provided with a locking hole (311) for inserting the locking member (22). The pressing member (32) is disposed at the top of the buckle body (31) and is used to drive the locking member (22) to disengage from the locking hole (311).

2. The safety buckle for a baby stroller as described in claim 1, characterized in that: The first shoulder strap buckle (11) includes a first base (111) and a first strap member (112) connected to one end of the first base (111) in the length direction. The top surfaces of the two ends of the first base (111) in the length direction are respectively provided with stepped grooves (1111). The mounting base (21) is fixedly disposed in the middle of the top surface of the first base (111). The second shoulder strap buckle (12) includes a second base (121) and a second strap (122) connected to one end of the second base (121) in the length direction. The second base (121) has overlapping portions (1211) on both sides in the length direction that cooperate with the stepped groove (1111). The anti-detachment structure (13) includes a recess (131) and a protrusion (132) disposed between the stepped groove (1111) and the overlapping part (1211), with the protrusion (132) cooperating with the recess (131).

3. The safety buckle for a baby stroller as described in claim 2, characterized in that: It also includes two symmetrically arranged belt buckles (4), each belt buckle (4) including a third strap (41) and a connector (42) fixedly connected to the third strap (41). The top surfaces of the opposite sides of the first base (111) and the second base (121) are provided with mounting grooves (14). The opening direction of the mounting groove (14) is perpendicular to the length direction of the first base (111). The connector (42) is detachably snapped into the mounting groove (14).

4. The safety buckle for a baby stroller as described in claim 3, characterized in that: The connector (42) has a positioning groove (421) along the length of the first base (111). The top surfaces of the first base (111) and the second base (121) are provided with notches (15) that are in contact with the positioning groove (421). The bottom surface of the notches (15) is flush with the bottom surface of the positioning groove (421). The bottom surface of the buckle body (31) is provided with a positioning protrusion (312) that cooperates with the positioning groove (421).

5. The safety buckle for a baby stroller as described in claim 4, characterized in that: The first substrate (111) and the second substrate (121) are provided with insertion grooves (16) on opposite side walls. The insertion grooves (16) are located below the mounting groove (14). The connector (42) is provided with insertion protrusions (422) that are connected to the insertion grooves (16).

6. The safety buckle for a baby stroller as described in claim 5, characterized in that: A snap-fit ​​connection structure is provided between the insertion slot (16) and the insertion protrusion (422).

7. The safety buckle for a baby stroller as described in claim 2, characterized in that: The buckle body (3) also includes a fourth strap (34) fixedly connected to one end of the buckle body (31) along its length. The bottom surface of the buckle body (31) is provided with an assembly groove (313) along its length. The assembly groove (313) extends out of the end of the buckle body (31) away from the fourth strap (34) for inserting the snap-fit ​​structure (2). The locking hole (311) is located on the top surface inside the assembly groove (313). The side wall of the assembly groove (313) is provided with an installation channel (3131). The snap-fit ​​component (33) is telescopically disposed in the installation channel (3131).

8. The safety buckle for a baby stroller as described in claim 7, characterized in that: The snap-fit ​​component (33) is a magnetic component, and the mounting base (21) is provided with a first magnetic component (23) that is magnetically attracted to the snap-fit ​​component (33). The edge of the mounting base (21) above the snap-fit ​​groove (211) has a guide bevel (212).

9. The safety buckle for a baby stroller as described in claim 8, characterized in that: A second magnetic element (17) is provided between the stepped groove (1111) and the overlapping part (1211) respectively, which magnetically attracts each other.

10. The safety buckle for a baby stroller as described in claim 9, characterized in that: The buckle body (31) is provided with a third magnetic element (35) that is attracted to the first magnetic element (23), and the buckle body (31) is also provided with a fourth magnetic element (36) that is attracted to the second magnetic element (17).

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