Infant moving device

Abstract

The utility model provides a baby moving device which comprises a frame, and a locking piece is arranged at the pivoted position of the frame. The handlebar group is arranged on the frame, the handlebar group comprises a lower handlebar group and an upper handlebar group, and the upper handlebar group can be adjusted in the length direction relative to the lower handlebar group; the handlebar set further comprises an adjusting structure which is used for adjusting the position height of the upper handlebar set relative to the lower handlebar set. The handlebar set further comprises an unlocking structure and a limiting structure, and the unlocking structure is used for unlocking the locking piece so that the frame can be folded or unfolded. The limiting structure is arranged between the lower handle set and the upper handle set and used for limiting the maximum moving range of the upper handle set relative to the lower handle set in the adjusting process. Through cooperation of the unlocking structure, the adjusting structure and the limiting structure, stepless adjustment of the height of the handle is achieved, meanwhile, safety and convenience of folding operation are ensured, and the folding handle has the advantages that the operation process is simplified, the safety performance is improved, and the adjusting and limiting functions are optimized.

Description

Technical Field

[0001] This utility model relates to the field of children's vehicle technology, and in particular to an infant mobility device. Background Technology

[0002] Strollers are generally designed to unfold or fold. When unfolded, they provide a comfortable ride for children, while when folded, they are convenient to carry or store. As a result, strollers have gradually become an essential item for adults taking children out. There are many types of strollers available, varying in the number of frame members and the connection points between them, resulting in differences in folding principles, folding methods, and the final folded appearance.

[0003] For example, Chinese patent document CN116834821A disclosed in 2023 a baby stroller and its telescopic handle assembly. The telescopic handle assembly includes a fixed sleeve, a telescopic sleeve, a sliding body, a first sliding member, and a second sliding member. The fixed sleeve has multiple positioning holes along its axial direction. The telescopic sleeve is slidably fitted with the fixed sleeve. The sliding body is fixed in the telescopic sleeve, and a first locking member is radially slidably disposed on the sliding body to extend out of the telescopic sleeve and engage with the positioning holes. A second locking member is radially slidably disposed on the first sliding member and connected to a locking mechanism that keeps the support open. When the first sliding member is set to slide, the second locking member drives the locking mechanism to unlock; when the second sliding member is set to slide, the first locking member disengages from the positioning holes and simultaneously drives the second locking member to disconnect from the locking mechanism. In the aforementioned patent document, there is no limiting function between the fixed sleeve and the telescopic sleeve. Therefore, the telescopic sleeve is prone to exceeding its safe travel range and separating, causing the telescopic sleeve to extend when the stroller is folded up, making the entire stroller frame unable to stand upright.

[0004] Therefore, further improvements are needed. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide an infant mobile device to overcome the shortcomings of the prior art. This mobile device is simple and convenient to operate, has high safety performance, and optimizes the adjustment limit function, thereby improving the user's operating experience.

[0006] An infant mobility device designed for this purpose includes:

[0007] The frame, wherein the pivot joint of the frame has a locking element;

[0008] A handlebar assembly, which is mounted on the frame, includes a lower handlebar assembly and an upper handlebar assembly, wherein the upper handlebar assembly is adjustable relative to the lower handlebar assembly in its length direction.

[0009] The handlebar assembly also includes an adjustment structure, which is used to adjust the position and height of the upper handlebar assembly relative to the lower handlebar assembly;

[0010] The handlebar assembly also includes an unlocking structure and a limiting structure. The unlocking structure can drive the limiting structure to a limiting state. The limiting structure is disposed between the lower handlebar assembly and the upper handlebar assembly to limit the maximum range of movement of the upper handlebar assembly relative to the lower handlebar assembly during the unlocking process.

[0011] The unlocking structure includes an unlocking block, and the adjusting structure includes a telescopic locking member, which is kinetically connected to the unlocking block; wherein, pressing the unlocking block drives the telescopic locking member, which engages with the height adjustment hole of the lower handle assembly.

[0012] The unlocking structure also includes a double-lock assembly, which is used to selectively restrict the operation of the unlocking block. The unlocking block cooperates with the double-lock assembly. By unlocking the double-lock assembly, the unlocking block is fully pressed, which can then continue to push the upper handle group upward or downward, thereby unlocking the locking member.

[0013] The frame is also provided with a drive assembly that drives the locking member. When the upper handlebar group moves relative to the lower handlebar group, one end of the lower handlebar group abuts against the drive assembly. The telescopic locking member is provided with a limiting post. When the unlocking block is fully pressed, the limiting post corresponds to the clearance groove of the drive assembly, thereby the lower handlebar group pushes the drive assembly.

[0014] The adjustment structure also includes a fixed base connected to one end of the upper handlebar assembly, and the telescopic locking member and the limiting structure are mounted on the fixed base;

[0015] The adjustment structure also includes a first elastic reset member, which is disposed between the telescopic locking member and the fixed base. When the unlocking block is pressed, the unlocking block presses against the first elastic reset member to deform, thereby causing the telescopic locking member to disengage from the height adjustment hole of the lower handle assembly.

[0016] A second connecting member is provided between the unlocking block and the telescopic locking member. When the unlocking block is pressed, the unlocking block drives the telescopic locking member to move through the second connecting member.

[0017] The limiting structure includes a movable seat, and the telescopic locking member is provided with a pushing part for pushing the movable seat to move relative to the fixed seat. The pushing part has a first guide surface, and the movable seat is provided with a second guide surface that cooperates with the first guide surface. When the telescopic locking member is displaced, it pushes the movable seat by cooperating with the first guide surface and the second guide surface.

[0018] A second elastic reset member is provided between the movable seat and the fixed seat. When the telescopic locking member pushes the movable seat, the movable seat deforms by pressing against the second elastic reset member.

[0019] The limiting structure includes a limiting member and a third elastic reset member. The movable seat is provided with a mounting groove for mounting the limiting member and the third elastic reset member. One end of the third elastic reset member abuts against the limiting member, and the other end of the third elastic reset member abuts against the inner side wall of the mounting groove. When the telescopic locking member pushes the movable seat, the movable seat presses against the third elastic reset member and deforms.

[0020] The fixed base is provided with a slot for the limiting member to pass through, and the lower handlebar assembly is provided with a limiting hole that cooperates with the limiting member. When the upper handlebar assembly is displaced relative to the lower handlebar assembly, the limiting member is positioned on the limiting hole by the action of the third elastic reset member, so that the upper handlebar assembly is positioned on the lower handlebar assembly.

[0021] A guide structure is provided between the movable seat and the limiting member. The guide structure includes a first guide groove and a first guide post. The first guide groove is vertically arranged on the movable seat, and the first guide post is arranged on the limiting member. The limiting member is slidably arranged on the first guide groove through the first guide post.

[0022] The drive assembly includes a sliding seat and a roller mounted on the sliding seat. A first connecting member is provided between the roller and the locking member. One end of the first connecting member is connected to the locking member, and the other end of the first connecting member is wound around the roller. A fourth elastic reset member is provided between the roller and the sliding seat. When the lower handlebar assembly pushes the sliding seat, the fourth elastic reset member deforms, and the roller drives the locking member away from the pivot point of the frame through the first connecting member.

[0023] The clearance groove is located at the pivot joint of the vehicle frame.

[0024] The dual-lock assembly includes an operating part movably connected to the unlocking block. The unlocking block has an unlocking position and a locking position. Operating the operating part allows it to move relative to the unlocking block to either the unlocking position or the locking position. When the operating part is in the unlocking position, the connecting rod of the operating part corresponds to the groove of the handlebar assembly to unlock the unlocking block. When the operating part is in the locking position, the connecting rod of the operating part abuts against the limiting part of the handlebar assembly to restrict the displacement of the unlocking block.

[0025] The dual-lock assembly further includes a fifth elastic element that provides a reset force to the operating part, the fifth elastic element being disposed between the operating part and the unlocking block.

[0026] Compared with the prior art, the infant mobility device of the above embodiment, through the coordinated cooperation of the locking member at the frame pivot and the unlocking structure, adjustment structure, and limiting structure integrated in the handlebar assembly, achieves stepless adjustment of the handlebar height while ensuring the safety and convenience of folding operation. It has the advantages of simplifying the operation process, improving safety performance, and optimizing the adjustment and limiting functions. Specifically, the handlebar assembly adjusts the height between the upper and lower handlebar assemblies through the adjustment structure; the telescopic locking member allows for vertical adjustment of the upper handlebar assembly on the lower handlebar assembly, and the adjustment structure can accommodate the needs of users of different heights; the unlocking structure works in conjunction with the unlocking block and the telescopic locking member. When the unlocking block is pressed, the pressure transmitted by the unlocking block causes the telescopic locking member to disengage from the height adjustment hole of the lower handlebar assembly, thereby allowing the upper handlebar assembly to slide and adjust its height; the limiting structure effectively prevents over-adjustment and loosening of the handlebars, ensuring a stable fit between the upper and lower handlebar assemblies and improving safety and comfort during use; the limiting structure is located between the lower and upper handlebar assemblies to limit the maximum range of movement of the upper handlebar assembly, preventing handlebar separation and ensuring stability.

[0027] The double-lock design adds extra security, preventing the handlebars from unlocking inappropriately or the frame from folding accidentally, ensuring safe and reliable operation. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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 a schematic diagram of the vehicle frame unfolding in one embodiment of the present invention.

[0031] Figure 2 This is a schematic diagram of the locking component, driving assembly, adjustment structure, and limiting structure in one embodiment of the present invention.

[0032] Figure 3 This is a schematic diagram of the initial state of the telescopic locking member and the limiting structure in one embodiment of the present invention.

[0033] Figure 4 This is a schematic diagram of the initial state of the limiting structure in one embodiment of the present invention.

[0034] Figure 5 This is a schematic diagram of the height adjustment hole and the limiting hole of the lower handle assembly in one embodiment of the present invention.

[0035] Figure 6 This is a schematic diagram of the push-limiting structure of the telescopic locking member in one embodiment of the present invention.

[0036] Figure 7 This is a cross-sectional view of the push-limiting structure of the telescopic locking member in one embodiment of the present invention.

[0037] Figure 8 This is a cross-sectional view of the mating structure of the first guide surface and the second guide surface in one embodiment of the present invention.

[0038] Figure 9 This is a cross-sectional view of the limiting structure in one embodiment of the present invention.

[0039] Figure 10 This is an exploded view of the telescopic locking member and the limiting structure in one embodiment of the present invention.

[0040] Figure 11 This is a schematic diagram of the contact state between the fixed base and the drive component in one embodiment of the present invention.

[0041] Figure 12 This is a schematic diagram of the state of the limiting post corresponding to the clearance groove in one embodiment of the present invention.

[0042] Figure 13 This is a schematic diagram of the fit between the limiting post and the relief groove in one embodiment of the present invention.

[0043] Figure 14 This is a cross-sectional view of the limiting post and the relief groove in a fit state according to an embodiment of the present invention.

[0044] Figure 15 This is a schematic diagram of the engagement state between the limiting member and the limiting hole in one embodiment of the present invention.

[0045] Figure 16 This is a schematic diagram of the pivot joint state of the locking member unlocking the frame in one embodiment of the present invention.

[0046] Figure 17 This is a schematic diagram of the pivot joint of the locking member locking the frame in one embodiment of the present invention.

[0047] Figure 18 This is an unlocking structure in one embodiment of the present invention.

[0048] Figure 19 This is a schematic diagram of the operating part in the locked position in one embodiment of the present invention.

[0049] Figure 20 This is a schematic diagram of the connecting rod and the limiting part abutting in one embodiment of the present invention.

[0050] Figure 21 This is a schematic diagram of the state of the connecting rod corresponding to the groove in one embodiment of the present invention. Detailed Implementation

[0051] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0052] like Figures 1-21 As shown, an infant mobility device is provided, including a frame 1, with a locking member 2 at the pivot of the frame 1;

[0053] The handlebar assembly 3 is mounted on the frame 1. The handlebar assembly 3 includes a lower handlebar assembly 31 and an upper handlebar assembly 32. The upper handlebar assembly 32 can be adjusted relative to the lower handlebar assembly 31 in its length direction.

[0054] The handlebar assembly 3 also includes an adjustment structure 33, which is used to adjust the position and height of the upper handlebar assembly 32 relative to the lower handlebar assembly 31;

[0055] The handlebar assembly 3 also includes an unlocking structure 34 and a limiting structure 35. The unlocking structure 34 can drive the limiting structure 35 to a limiting state. The limiting structure 35 is located between the lower handlebar assembly 31 and the upper handlebar assembly 32 and is used to limit the maximum range of movement of the upper handlebar assembly 32 relative to the lower handlebar assembly 31 during the unlocking process.

[0056] Specifically, the lower handlebar assembly 31 and the upper handlebar assembly 32 are connected by a nested sleeve structure. The telescopic locking member 331 in the adjustment structure 33 is normally embedded in the height adjustment hole 311 of the lower handlebar assembly 31 to fix its height. When the user presses the unlocking structure 34, the telescopic locking member 331 disengages from the height adjustment hole 311, allowing the upper handlebar assembly 32 to slide. During the movement of the upper handlebar assembly 32, the limiting member 353 in the limiting structure 35 moves with it. When it reaches the preset position, the limiting member 353 engages with the limiting hole 312 to form a mechanical block, preventing separation and ensuring the stability of the handlebars. The limiting structure prevents the handlebars from loosening or falling off, ensuring the stability of the handlebars during adjustment, thereby improving safety and comfort.

[0057] Compared with existing technologies, this solution integrates a dual locking mechanism into the adjustment mechanism. Traditional designs only focus on height adjustment, while this application effectively solves the risk of handlebar assembly 3 coming off during adjustment. The limiting structure 35 provides real-time position monitoring during adjustment to prevent users from overstretching and causing the risk of coming off. The limiting structure 35 automatically activates the limiting protection during adjustment, while ensuring that each component maintains the optimal relative position when folded.

[0058] It should be noted that the locking element at the frame pivot refers to the mechanical latch located at the rotating joint, which can be implemented using a spring-loaded pin structure.

[0059] The handlebar assembly's height adjustment function changes the handlebar height through a sliding fit structure, and the telescopic locking component can selectively engage with different holes.

[0060] Furthermore, such as Figures 2-10 As shown, the unlocking structure 34 includes an unlocking block 341, and the adjusting structure 33 includes a telescopic locking member 331, which is connected to the unlocking block 341 in a transmission manner; wherein, the telescopic locking member 331 is driven by pressing the unlocking block 341, and the telescopic locking member 331 is connected to the height adjustment hole 311 of the lower handle assembly 31.

[0061] Specifically, such as Figures 2-10 and Figure 18As shown, when the user presses the unlocking block 341, the pressure is transmitted to the telescopic locking member 331, causing the locking protrusion of the telescopic locking member 331 to disengage from the height adjustment hole 311; at this time, the upper handle group 32 can move along the length direction of the lower handle group 31 to achieve height adjustment; after releasing the unlocking block 341, the telescopic locking member 331 is reinserted into the corresponding height adjustment hole 311 under the action of the first elastic reset member 333 to complete the positioning.

[0062] Through the coordinated action of the unlocking block 341 and the telescopic locking component 311, the height of the handlebar assembly 3 can be adjusted conveniently and precisely. The adjustment process is simple and convenient, meeting the actual usage needs.

[0063] It should be noted that the unlocking block 341 is an operating component used to trigger the telescopic locking member 331. Specifically, it can be implemented using a plastic or metal block with a pressing surface. The pressing surface can be designed as curved or flat to accommodate the force applied by the finger.

[0064] The telescopic locking member 331 and the height adjustment hole 311 form a moving part that can engage or disengage. Specifically, the telescopic locking member 331 is provided with a locking protrusion, and the lower handle assembly 31 is provided with a height adjustment hole that matches the shape and contour of the locking protrusion.

[0065] The transmission connection can transmit the operating force through mechanical linkage. Specifically, it can be achieved by using a pin, connecting rod, gear, or rope structure to drive the displacement of the telescopic locking member 331 through the action of the unlocking pressure block 341.

[0066] Furthermore, such as Figures 2-10 and Figures 18-21 As shown, the unlocking structure 34 also includes a second locking assembly 342. The second locking assembly 342 is used to selectively restrict the operation of the unlocking block 341. The unlocking block 341 cooperates with the second locking assembly 342. By unlocking the second locking assembly 342, the unlocking block 341 is fully pressed, which can then continue to push the upper handle assembly 32 downward, thereby unlocking the locking member 2.

[0067] Specifically, the double-lock assembly 342 is used to limit the pressing stroke of the unlocking block 341 in the non-operational state. It can be implemented by a mechanical structure with a sliding button or a rotating paddle. Selective restriction is achieved by physically blocking or releasing the movement path of the unlocking block 341. The unlocking block 341 and the double-lock assembly 342 work together to effectively solve the problem in the prior art that the lack of a limit and anti-accidental touch mechanism leads to the accidental movement of the handlebar assembly or the accidental folding of the frame.

[0068] It should be noted that the function of the double-lock assembly 342 is to restrict the full pressing of the unlocking block 341, ensuring that the frame 1 will only be unlocked under the correct operation; the unlocking process is to release the restriction of the double-lock assembly 342, allowing the unlocking block 341 to be fully pressed, thereby allowing the handlebar assembly 31 to continue to move down, and finally unlocking the locking member 2, thus unlocking the frame 1.

[0069] Furthermore, such as Figures 11-14 and Figures 18-21 As shown, the frame 1 is also provided with a drive assembly 4 that drives the locking member 2. When the upper handlebar assembly 32 moves relative to the lower handlebar assembly 31, one end of the lower handlebar assembly 31 abuts against the drive assembly 4. The telescopic locking member 331 is provided with a limiting post 3311. When the unlocking block 341 is fully pressed, the limiting post 3311 corresponds to the clearance groove 11 of the drive assembly 4, thereby pushing the drive assembly 4 with the lower handlebar assembly 31.

[0070] Specifically, when the unlocking block 341 is fully pressed, the limiting post 3311 of the telescopic locking member 331 axially aligns with the clearance groove 11 at the pivot point of the frame 1. At this time, the lower handlebar assembly 31 abuts against the sliding seat 41 of the drive assembly 4, causing the roller 42 to pull the locking member 2 out of the locked position at the pivot point of the frame 1 via the first connecting member 43. At this time, the frame 1 can be folded or unfolded. The cooperation between the limiting post 3311 and the clearance groove 11 ensures that the drive assembly 4 moves only in a single direction, limiting the movement trajectory of the drive assembly 4.

[0071] It should be noted that the limiting post 3311 is a columnar positioning structure installed on the telescopic locking member 331. Its cooperation with the clearance groove 11 can ensure that the telescopic locking member 331 moves along a predetermined path when the unlocking block 341 is pressed.

[0072] Furthermore, such as Figures 3-10 As shown, the adjustment structure 33 also includes a fixed base 332 connected to one end of the upper handle assembly 32, and a telescopic locking member 331 and a limiting structure 35 are mounted on the fixed base 332.

[0073] The adjustment structure 33 also includes a first elastic reset member 333. The first elastic reset member 333 is disposed between the telescopic locking member 331 and the fixed seat 332. When the unlocking block 341 is pressed, the unlocking block 341 presses the first elastic reset member 333 to deform, thereby disengaging the telescopic locking member 331 from the height adjustment hole 311 of the lower handle assembly 31.

[0074] A second connecting member 5 is provided between the unlocking block 341 and the telescopic locking member 331. When the unlocking block 341 is pressed, the unlocking block 341 drives the telescopic locking member 331 to move through the second connecting member 5.

[0075] Specifically, when the height of the upper handlebar assembly 32 needs to be adjusted, the operator presses the unlocking block 341. The second connecting piece 5 transmits pressure to the telescopic locking piece 331, causing it to overcome the elastic force of the first elastic reset piece 333 and disengage from the height adjustment hole 311 of the lower handlebar assembly 31. At this time, the first elastic reset piece 333 is compressed and stores elastic potential energy, allowing the upper handlebar assembly 32 to move along the length of the lower handlebar assembly 31. After releasing the unlocking block 341, the first elastic reset piece 333 releases its elastic potential energy, pushing the telescopic locking piece 331 back into the height adjustment hole 311 to achieve position locking. The fixed base 332, as the supporting body, ensures the stability of the movement trajectory of the telescopic locking piece 331 and the limiting structure 35, avoiding jamming caused by component misalignment.

[0076] It should be noted that the fixed base 332 is used to support and fix the mounting base of the telescopic locking member 331 and the limiting structure 35; the first elastic reset member 333 is an elastic element that provides the reset power of the telescopic locking member 331, which can be implemented by using a helical spring, wave spring or elastic rubber. Its two ends are in contact with the telescopic locking member 331 and the fixed base 332 respectively, and it can return to its initial shape after being deformed by pressure; the second connecting member 5 is a transmission component for transmitting the operating force of the unlocking block 341. The second connecting member 5 is a flexible or rigid connecting member, which can be implemented by using a wire rope, chain or nylon rope. One end of it is connected to the unlocking block 341 and the other end is connected to the telescopic locking member 331 to form a force transmission path.

[0077] Furthermore, such as Figures 3-10 As shown, the limiting structure 35 includes a movable seat 351. The telescopic locking member 331 is provided with a pushing part 3312 for pushing the movable seat 351 to move relative to the fixed seat 332. The pushing part 3312 has a first guide surface 3312a. The movable seat 351 is provided with a second guide surface 3511 that cooperates with the first guide surface 3312a. When the telescopic locking member 331 moves, it pushes the movable seat 351 by cooperating with the first guide surface 3312a and the second guide surface 3511.

[0078] A second elastic reset member 352 is provided between the movable seat 351 and the fixed seat 332. When the telescopic locking member 331 pushes the movable seat 351, the movable seat 351 deforms by pressing against the second elastic reset member 352.

[0079] Specifically, when the unlocking block 341 is pressed, the telescopic locking member 331 moves axially, and the first guide surface 3312a of the pushing part 3312 contacts the second guide surface 3511 of the moving seat 351. Due to the inclined surface fit, the horizontal movement of the telescopic locking member 331 is converted into the vertical displacement of the moving seat 351, and the moving seat 351 compresses the second elastic reset member 352; when the adjustment is in place, the moving seat 351 resets under the action of the second elastic reset member 352.

[0080] Furthermore, such as Figures 3-10 As shown, the limiting structure 35 includes a limiting member 353 and a third elastic reset member 354. The movable seat 351 is provided with a mounting groove 3512 for mounting the limiting member 353 and the third elastic reset member 354. One end of the third elastic reset member 354 abuts against the limiting member 353, and the other end of the third elastic reset member 354 abuts against the inner side wall of the mounting groove 3512. When the telescopic locking member 331 pushes the movable seat 351, the movable seat 351 presses against the third elastic reset member 354 and deforms.

[0081] like Figure 15 As shown, the fixed base 332 is provided with a slot 3321 for the limiting member 353 to pass through, and the lower handle assembly 31 is provided with a limiting hole 312 that cooperates with the limiting member 353. When the upper handle assembly 32 is displaced relative to the lower handle assembly 31, the limiting member 353 is positioned on the limiting hole 312 by the action of the third elastic reset member 354, so that the upper handle assembly 32 is positioned on the lower handle assembly 31.

[0082] Specifically, when the height of the upper handlebar assembly 32 needs to be adjusted, pressing the unlocking block 341 drives the telescopic locking member 331 to disengage from the height adjustment hole 311. At this time, the moving base 351 is displaced under the push of the telescopic locking member 331. During the displacement of the moving base 351, the third elastic reset member 354 is compressed, causing the limiting member 353 to disengage from the limiting hole 312, thus releasing the limiting constraint on the upper handlebar assembly 32. After the adjustment is completed, the unlocking block 341 is released, and the third elastic reset member 354 pushes the limiting member 353 to re-insert into the corresponding limiting hole 312, thereby achieving height position locking.

[0083] It should be noted that the limiting member 353 is used to limit the range of movement of the upper handlebar assembly 32 relative to the lower handlebar assembly 31; the third elastic reset member is an elastic element that provides the reset spring force of the moving seat 351, and can be implemented by a coil spring, wave spring or elastic rubber. Its function is to provide a continuous pressing force for the limiting member 353 so that it can be stably locked into the limiting hole 312; the limiting hole 312 can be a circular hole or an irregular hole, and is used to form a locking state with the limiting member 353 to fix the height position.

[0084] Furthermore, such as Figure 9 and Figure 10 As shown, a guide structure is provided between the movable seat 351 and the limiting member 353. The guide structure includes a first guide groove 3513 and a first guide post 3531. The first guide groove 3513 is vertically arranged on the movable seat 351, and the first guide post 3531 is arranged on the limiting member 353. The limiting member 353 is slidably arranged on the first guide groove 3513 through the first guide post 3531.

[0085] Specifically, when the height of the handlebar assembly 32 needs to be adjusted, pressing the unlocking block 341 drives the telescopic locking member 331 to disengage from the height adjustment hole 311. During this process, as the handlebar assembly 32 is moved, the limiting member 353 slides along the direction of the first guide groove 3513, driven by the moving seat 351. Due to the constraint of the first guide post 3531 and the first guide groove 3513, the limiting member 353 can move vertically. When the target height is reached, the third elastic reset member 354 pushes the limiting member 353 into the corresponding limiting hole 312, achieving reliable positioning. This guiding structure effectively prevents the limiting member 312 from shifting laterally during adjustment.

[0086] Furthermore, such as Figures 11-17 As shown, the drive assembly 4 includes a sliding seat 41 and a roller 42 disposed on the sliding seat 41. A first connecting member 43 is provided between the roller 42 and the locking member 2. One end of the first connecting member 43 is connected to the locking member 2, and the other end of the first connecting member 43 is wound around the roller 42. A fourth elastic reset member 45 is provided between the roller 42 and the sliding seat 41. When the lower handlebar assembly 31 pushes the sliding seat 41, the fourth elastic reset member 45 is deformed, and then the roller 42 drives the locking member 2 away from the pivot of the frame 1 through the first connecting member 43.

[0087] The clearance groove 11 is located at the pivot point of the frame 1.

[0088] Specifically, when the unlocking block 341 is fully pressed, the limiting post 3311 enters the clearance groove 11, and the lower handlebar assembly 31 moves downward, pushing the sliding seat 41 to move. At this time, the fourth elastic reset member 45 is compressed and deformed. The roller member 42 rotates as the sliding seat 41 moves, and the first connecting member 43 wrapped around it is tightened, thereby driving the locking member 2 to move away from the pivot point of the frame 1, releasing the locking state of the pivot point. When the external force is released, the fourth elastic reset member 45 pushes the sliding seat 41 to slide in the opposite direction, the roller member 42 rotates, causing the first connecting member 43 to loosen, and the locking member 2 resets under its own elasticity or the action of the additional reset structure.

[0089] It should be noted that the roller component 42 is a rotating part with a winding structure, which can be implemented by using a pulley or roller with grooves. By winding the first connecting member 43, the linear motion of the sliding seat 41 is converted into the linear displacement of the locking member 2. The first connecting member 43 is a flexible or rigid connecting member, which can be implemented by using a steel wire rope, chain or nylon rope. Its winding connection method can ensure that the roller component 42 can effectively drive the locking member 2 when it rotates. The fourth elastic reset member 45 is an elastic element for resetting the elastic force, which can be implemented by using a helical spring or elastic rubber block. It is used to automatically reset the sliding seat 41 after the thrust disappears.

[0090] Furthermore, such as Figures 18-21As shown, the double-lock assembly 342 includes an operating part 3421, which is movably connected to the unlocking block 341. The unlocking block 341 has an unlocking position and a locking position. The operating part 3421 can be moved relative to the unlocking block 341 to the unlocking position or the locking position. When the operating part 3421 is in the unlocking position, the connecting rod 3421b of the operating part 3421 corresponds to the groove 36 of the handlebar assembly 3 to unlock the unlocking block 341. When the operating part 3421 is in the locking position, the connecting rod 3421b of the operating part 3421 abuts against the limiting part 37 of the handlebar assembly 3 to limit the displacement of the unlocking block 341.

[0091] like Figures 19-21 As shown, the double-lock assembly 342 also includes a fifth elastic element 3422 that provides a reset force to the operating part 3421. The fifth elastic element 3422 is disposed between the operating part 3421 and the unlocking block 341.

[0092] Specifically, the operating part 3421 moves the connecting rod 3421b by sliding or rotating. When the operating part 3421 moves to the unlock position, the connecting rod 3421b engages with the groove 36 of the handlebar assembly 3. At this time, pressing the unlocking block 341 drives the telescopic locking member 331, causing the first guide post 3531 to mate with the first guide groove 3513. The telescopic locking member then pushes the second connecting member, realizing the displacement of the locking member 2, thereby folding or unfolding the frame 1. When the operating part 3421 moves to the locked position, the connecting rod 3421b abuts against the limiting part 37, preventing the unlocking block 341 from being fully pressed, thus preventing accidental triggering of the unlocking action. The fifth elastic element 3422 undergoes elastic deformation after the operating part 3421 moves. When the external operating force disappears, it pushes the operating part 3421 back to the initial position, ensuring that the double lock assembly 342 automatically resets.

[0093] It should be noted that the groove 36 is a recessed structure on the handlebar assembly 3, which can be a U-shaped groove or a rectangular groove, used to accommodate the linkage 3421b in the unlock position to allow free pressing of the unlocking block 341. The limiting part 37 is a protrusion or blocking structure of the handlebar assembly 3, which can be a boss or a buckle, used to block the movement of the linkage 3421b in the locked position to limit the pressing stroke of the unlocking block 341; the fifth elastic element can be a spring or a sheet, used to automatically return to the initial position after the operating part moves.

[0094] Furthermore, there are several height adjustment holes 311, which are evenly spaced on the side wall of the lower handle assembly 31.

[0095] It should be noted that the height adjustment hole 311 can be round, square or irregularly shaped, and the hole spacing can be set to, for example, 3 mm, 5 mm, 10 mm or 15 mm according to the adjustment accuracy requirements.

[0096] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0097] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0098] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0099] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0100] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0101] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0102] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0103] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An infant mobility device, comprising The frame (1) has a locking element (2) at its pivot point; Handlebar assembly (3), the handlebar assembly (3) is mounted on the frame (1), the handlebar assembly (3) includes a lower handlebar assembly (31) and an upper handlebar assembly (32), the upper handlebar assembly (32) is adjustable relative to the lower handlebar assembly (31) in its length direction; Its features are: The handlebar assembly (3) also includes an adjustment structure (33) for adjusting the position height of the upper handlebar assembly (32) relative to the lower handlebar assembly (31); The handlebar assembly (3) also includes an unlocking structure (34) and a limiting structure (35). The unlocking structure (34) can drive the limiting structure (35) to a limiting state. The limiting structure (35) is disposed between the lower handlebar assembly (31) and the upper handlebar assembly (32) to limit the maximum range of movement of the upper handlebar assembly (32) relative to the lower handlebar assembly (31) during the unlocking process.

2. The infant mobility device according to claim 1, characterized in that: The unlocking structure (34) includes an unlocking block (341), and the adjusting structure (33) includes a telescopic locking member (331). The telescopic locking member (331) is connected to the unlocking block (341) in a transmission manner. The telescopic locking member (331) is driven by pressing the unlocking block (341).

3. The infant mobility device according to claim 2, characterized in that: The unlocking structure (34) further includes a double-lock assembly (342), which is used to selectively restrict the operation of the unlocking block (341). The unlocking block (341) cooperates with the double-lock assembly (342). By unlocking the double-lock assembly (342), the unlocking block (341) is fully pressed, which can then continue to push the upper handle assembly (32) downward, thereby unlocking the locking member (2).

4. The infant mobility device according to claim 3, characterized in that: The frame (1) is also provided with a drive assembly (4) that drives the locking member (2). When the upper handlebar assembly (32) moves relative to the lower handlebar assembly (31), one end of the lower handlebar assembly (31) abuts against the drive assembly (4). The telescopic locking member (331) is provided with a limiting post (3311). When the unlocking block (341) is fully pressed, the limiting post (3311) corresponds to the clearance groove (11) of the drive assembly (4), and then the lower handlebar assembly (31) pushes the drive assembly (4).

5. The infant mobility device according to claim 2, characterized in that: The adjustment structure (33) also includes a fixed base (332) connected to one end of the upper handle assembly (32), and the telescopic locking member (331) and the limiting structure (35) are mounted on the fixed base (332); The adjustment structure (33) further includes a first elastic reset member (333), which is disposed between the telescopic locking member (331) and the fixed seat (332). When the unlocking block (341) is pressed, the unlocking block (341) presses against the first elastic reset member (333) to deform, thereby causing the telescopic locking member (331) to disengage from the height adjustment hole (311) of the lower handle assembly (31). A second connector (5) is provided between the unlocking block (341) and the telescopic locking member (331). When the unlocking block (341) is pressed, the unlocking block (341) drives the telescopic locking member (331) to move through the second connector (5).

6. The infant mobility device according to claim 5, characterized in that: The limiting structure (35) includes a movable seat (351). The telescopic locking member (331) is provided with a pushing part (3312) for pushing the movable seat (351) to move relative to the fixed seat (332). The pushing part (3312) has a first guide surface (3312a). The movable seat (351) is provided with a second guide surface (3511) that cooperates with the first guide surface (3312a). When the telescopic locking member (331) moves, it pushes the movable seat (351) by cooperating with the first guide surface (3312a) and the second guide surface (3511). A second elastic reset member (352) is provided between the movable seat (351) and the fixed seat (332). When the telescopic locking member (331) pushes the movable seat (351), the movable seat (351) deforms by pressing against the second elastic reset member (352).

7. The infant mobility device according to claim 6, characterized in that: The limiting structure (35) includes a limiting member (353) and a third elastic reset member (354). The movable seat (351) is provided with a mounting groove (3512) for mounting the limiting member (353) and the third elastic reset member (354). One end of the third elastic reset member (354) abuts against the limiting member (353), and the other end of the third elastic reset member (354) abuts against the inner side wall of the mounting groove (3512). When the telescopic locking member (331) pushes the movable seat (351), the movable seat (351) deforms against the third elastic reset member (354). The fixed base (332) is provided with a slot (3321) for the limiting member (353) to pass through. The lower handle assembly (31) is provided with a limiting hole (312) that cooperates with the limiting member (353). When the upper handle assembly (32) is displaced relative to the lower handle assembly (31), the limiting member (353) is positioned on the limiting hole (312) by the action of the third elastic reset member (354), so that the upper handle assembly (32) is positioned on the lower handle assembly (31).

8. The infant mobility device according to claim 7, characterized in that: A guide structure is provided between the movable seat (351) and the limiting member (353). The guide structure includes a first guide groove (3513) and a first guide post (3531). The first guide groove (3513) is vertically arranged on the movable seat (351), and the first guide post (3531) is arranged on the limiting member (353). The limiting member (353) is slidably arranged on the first guide groove (3513) through the first guide post (3531).

9. The infant mobility device according to claim 4, characterized in that: The drive assembly (4) includes a sliding seat (41) and a roller (42) disposed on the sliding seat (41). A first connector (43) is provided between the roller (42) and the locking member (2). One end of the first connector (43) is connected to the locking member (2), and the other end of the first connector (43) is wound around the roller (42). A fourth elastic reset member (45) is provided between the roller (42) and the sliding seat (41). When the lower handlebar assembly (31) pushes the sliding seat (41), the fourth elastic reset member (45) deforms, and then the roller (42) drives the locking member (2) away from the pivot of the frame (1) through the first connector (43). The clearance groove (11) is located at the pivot point of the frame (1).

10. The infant mobility device according to claim 3, characterized in that: The double-lock assembly (342) includes an operating part (3421), which is movably connected to the unlocking block (341). The unlocking block (341) has an unlocking position and a locking position. Operating the operating part (3421) allows it to move relative to the unlocking block (341) to the unlocking position or the locking position. When the operating part (3421) is in the unlocking position, the connecting rod (3421b) of the operating part (3421) corresponds to the groove (36) of the handlebar assembly (3) to unlock the unlocking block (341). When the operating part (3421) is in the locking position, the connecting rod (3421b) of the operating part (3421) abuts against the limiting part (37) of the handlebar assembly (3) to limit the displacement of the unlocking block (341). The double-lock assembly (342) further includes a fifth elastic element (3422) that provides a reset force to the operating part (3421), the fifth elastic element (3422) being disposed between the operating part (3421) and the unlocking block (341).

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