Stroller

Abstract

The utility model discloses a baby carriage, including frame, locking piece and release lock subassembly, frame includes car handle, and car handle rotatablely set and switch folding state and unfolded state of frame. Locking piece is suitable for locking and unlocking car handle, and release lock subassembly includes drive part, release lock sliding sleeve and button. Drive part movably sets up in the inside of car handle, and the first end of drive part is connected with locking piece, and the second end is connected with the second end of drive part. Release lock sliding sleeve movably sets up on car handle, and the inner wall is provided with support protruding. Button sets up in release lock sliding sleeve and has with release lock sliding sleeve locking in the locking state of car handle, and the unlocking state of unlocking release lock sliding sleeve. Baby carriage of the utility model, through setting up support protruding on the inner wall of release lock sliding sleeve, it is helpful to reduce release lock sliding sleeve in the wobble phenomenon in sliding process, and reduce sliding friction, thereby improve the stability of release lock sliding sleeve along car handle pipe body sliding, and then improve the security of baby carriage use.

Description

Technical Field

[0001] This utility model relates to the field of child safety products technology, specifically to a stroller. Background Technology

[0002] Strollers generally have folded and unfolded states for easy storage and use. The folding and unfolding of a stroller is achieved through the frame. Currently, there are many types of stroller frames, with different numbers of frame members, and different connection relationships and positions between the members, resulting in different folding methods for the frames.

[0003] However, existing strollers have poor locking capabilities due to the effort to improve the ease of unlocking. After the stroller is folded and locked, the frame is prone to automatically opening during storage and transportation, which is inconvenient. Moreover, the unlocking mechanism is prone to shaking during the unlocking process. Utility Model Content

[0004] The purpose of this invention is to at least solve the problems of poor locking ability and easy shaking during the unlocking process in existing strollers. This purpose is achieved through the following technical solution: The first aspect of this utility model discloses a stroller, comprising: A frame, including a rider, the frame having a folded state and an unfolded state, the rider being rotatably configured to switch between the folded state and the unfolded state; A locking element, adapted to lock and unlock the rider, which locks the rider when the frame is in the unfolded state, and allows the rider to rotate and switch the frame to the folded state after the locking element unlocks the rider; Release assembly, the release assembly comprising: A drive unit, which is movably disposed inside the rider, and a first end of the drive unit is connected to the locking member; A release sleeve is movably fitted onto the handlebar and connected to the second end of the drive component. The inner wall of the release sleeve is provided with a support protrusion. A button is disposed on the release slide, and the button has a locked state in which the release slide is locked to the rider, and an unlocked state in which the release slide is unlocked. In the locked state, the release assembly is connected to the rider and drives the locking member to lock the rider. In the unlocked state, the release assembly can slide on the rider under the action of external force and drive the locking member to unlock the rider.

[0005] The stroller of this invention includes a frame, a locking element, and a release assembly. The release assembly includes a drive element, a release slide, and a button. By actuating the button, the release slide can be in a locked or unlocked state on the stroller's hand. In the locked state, the release assembly connects to the stroller's hand and actuates the locking element to lock the stroller. In the unlocked state, external force is required to slide the release slide along the stroller's hand and unlock the locking element. At this time, the frame can switch from an unfolded state to a folded state. This design requires a secondary operation during the release process, which helps improve the stability of the frame in the unfolded state and ensures the stroller's safety. Simultaneously, the support protrusion helps reduce wobbling of the release slide during sliding and reduces sliding friction, improving the stability of the release slide as it slides along the stroller's hand.

[0006] In addition, the stroller according to this utility model may also have the following additional technical features: In some embodiments of this utility model, the projection of the inner wall of the release sleeve onto the first cross section is elliptical, and the first cross section is perpendicular to the moving direction of the release sleeve.

[0007] In some embodiments of this utility model, two support protrusions are respectively provided at both ends of the major axis of the ellipse, and the two support protrusions are symmetrically arranged with the major axis as the center.

[0008] In some embodiments of this utility model, the handlebar is provided with a locking hole, the button is rotatably disposed on the release sleeve, the button has a snap-fit ​​part, in the locked state the snap-fit ​​part is inserted into the locking hole, and in the unlocked state the snap-fit ​​part is disengaged from the locking hole.

[0009] In some embodiments of this utility model, the button is mounted on the release sleeve via a pivot shaft. Along the moving direction of the release sleeve, the button has an elastic portion. The elastic portion and the locking portion are respectively disposed on opposite sides of the pivot shaft. The elastic portion has a first compression state that drives the locking portion to be inserted into the locking hole.

[0010] In some embodiments of this utility model, the handlebar is provided with a sliding groove, and the release assembly further includes a first pin. The first pin is disposed on the release sleeve and is adapted to pass through the sliding groove. The second end of the drive member is connected to the release sleeve through the first pin.

[0011] In some embodiments of this utility model, the fixing hole provided on the rider tube body, the release assembly further includes: The second pin is inserted into the fixing hole, and both ends of the second pin pass through the locking joint. An elastic element, one end of which abuts against the driving element, and the other end of which abuts against the second pin, the elastic element having a first working state that drives the driving element to move away from the release sleeve.

[0012] In some embodiments of this utility model, the frame includes: The front foot is rotatably connected to the rider and forms a first rotatable connection point; The rear foot is rotatably connected to the rider and forms a second rotatable connection point; A connecting rod is rotatably connected to the front foot and the rear foot respectively. The connecting rod, the rear foot, the front foot and the rider form a four-bar linkage structure. The locking member is located at the first rotatable connection.

[0013] In some embodiments of this utility model, the frame further includes: A locking joint is provided on the rider's hand, one end of the locking joint is connected to the rider's hand, and the other end of the locking joint is rotatably connected to the front foot to form a first rotatable connection point. The locking element is movably disposed inside the locking joint and is throttle-connected to the release assembly.

[0014] In some embodiments of this utility model, a locking part is provided on the front foot, and the locking member is movably disposed on the locking joint. The locking member has a first position and a second position. In the first position, the locking member is adapted to be inserted into the locking part and lock the rider. In the second position, the locking member is separated from the locking part and unlocks the rider. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the structure of the stroller shown in the embodiment of this utility model; Figure 2 for Figure 1 A partial exploded view of the stroller from another perspective; Figure 3 for Figure 1 The diagram shown is a structural schematic of the chassis in its unfolded state. Figure 4 for Figure 1 The diagram shown is a structural schematic of the frame in its folded state. Figure 5 for Figure 1 The diagram shown is a schematic representation of the internal structure of the chassis in its unfolded state. Figure 6 for Figure 5 A magnified schematic diagram of a portion of the structure of B shown in the figure; Figure 7 for Figure 5 A magnified schematic diagram of a portion of the structure of C shown in the figure; Figure 8 for Figure 5 A schematic diagram of the locking element in its folded state; Figure 9 for Figure 5 The diagram shows the structure of the release assembly in its folded state. Figure 10 for Figure 2 The diagram shows a partially exploded view of the chassis in its unfolded state; Figure 11 for Figure 10 A magnified schematic diagram of a portion of the structure of D is shown; Figure 12 for Figure 10 The diagram shown is a structural schematic of the release sleeve. Figure 13 for Figure 10 The diagram shows the structure of the release sleeve from another perspective. Figure 14 for Figure 10 The diagram shows the structure of the button. Figure 15 for Figure 3 The diagram shows a cross-sectional view of the chassis along the AA direction.

[0016] The markings in the attached diagram are as follows: 1000. Stroller; 100. Seat; 200. Frame; 10. Rider; 11. Rider tube body; 12. Locking hole; 13. Slide groove; 20. Forefoot; 21. Locking part; 30. Back foot; 40. Support rod; 50. Locking components; 60. Lock release assembly; 61. Lock release sleeve; 611. Hollow sliding part; 612. Support protrusion; 613. First mounting hole; 614. Second mounting hole; 62. Button; 621. Elastic part; 622. Snap-fit ​​part; 623. Pivot shaft; 63. First pin; 64. Driving component; 65. Elastic component; 66. Second pin; 70. Locking joint; 71. Movable groove; 72. Slide rail; 81. Card holder; 82. Seat height adjustment mechanism; 90. Mounting bracket. Detailed Implementation

[0017] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0018] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0019] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0020] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.

[0021] Strollers generally have folded and unfolded states for easy storage and use. The folding and unfolding of a stroller is achieved through the frame. Currently, there are many types of stroller frames, with different numbers of frame members, and different connection relationships and positions between the members, resulting in different folding methods for the frames.

[0022] However, in order to improve the convenience of unlocking, existing strollers have poor locking capabilities. After the stroller is folded and locked, the frame is prone to automatically opening during storage and transportation, which is inconvenient for storage and transportation.

[0023] Based on the above-mentioned technical problems, this utility model proposes a stroller 1000. In terms of overall design, the stroller 1000 includes a frame 200, a locking component 50, and a release assembly 60.

[0024] The frame 200 includes a rider 10, which has a folded state and an unfolded state. The rider 10 can be rotated to switch between the folded and unfolded states. A locking member 50 is adapted to lock and unlock the rider 10. When the frame 200 is in the unfolded state, the locking member 50 locks the rider 10. After the locking member 50 unlocks the rider 10, the rider 10 can be rotated to switch the frame 200 to the folded state.

[0025] The release assembly 60 includes a drive member 64, a release sleeve 61, and a button 62. The drive member 64 is movably disposed inside the rider 10, and its first end is connected to the locking member 50. The release sleeve 61 is movably fitted onto the rider 10 and is connected to the second end of the drive member 64. The inner wall of the release sleeve 61 is provided with a support protrusion 612. The button 62 is disposed on the release sleeve 61 and has a locked state that locks the release sleeve 61 onto the rider 10, and an unlocked state that unlocks the release sleeve 61. In the locked state, the release assembly 60 is connected to the rider 10 and drives the locking member 50 to lock the rider 10. In the unlocked state, the release assembly 60 can slide on the rider 10 under the action of external force and drive the locking member 50 to unlock the rider 10.

[0026] Specifically, by configuring a drive component 64, a release sleeve 61, and a button 62, the release sleeve 61 can be locked and unlocked on the rider 10 by actuating the button 62. In the locked state, the release component 60 is connected to the rider 10 and actuates the locking component 50 to lock the rider 10. In the unlocked state, external force is required to slide the release sleeve 61 on the rider 10 and actuate the locking component 50 to unlock the rider 10. At this time, the frame can switch from an unfolded state to a folded state. This configuration requires a secondary operation during the unlocking process, which helps improve the stability of the frame 200 in the unfolded state and ensures the safety of the stroller 1000. At the same time, the support protrusion 612 helps reduce the wobbling of the release sleeve 61 during sliding and reduces sliding friction, improving the stability of the release sleeve 61 as it slides along the rider 10.

[0027] It is necessary to understand that, such as Figure 1 and Figure 2 As shown, the stroller 1000 includes a frame 200, a seat 100, and a locking mechanism. The frame 200 has a mounting base 90, and the seat 100 has a locking seat 81. The locking seat 81 engages with the mounting base 90 to allow the seat 100 to be mounted on the frame 200. Optionally, the frame 200 has a slide rail 72, and the mounting base 90 is movably mounted on the slide rail 72, thereby allowing the height of the seat 100 to be adjusted on the frame 200, thus improving the usability of the stroller 1000. Simultaneously, the frame 200 has a seat height adjustment mechanism 82, which can move the mounting base 90 to adjust the height of the seat 100.

[0028] It should be noted that the structure and mating method of the card holder 81 and the mounting seat 90 can refer to the existing structure to realize the installation of the seat 100 and the frame 200, and this application does not impose any restrictions on this.

[0029] Combination Figure 3 and Figure 4 As shown, the frame 200 includes a handlebar 10, a front foot 20, a rear foot 30, and a support rod 40. The front foot 20 is rotatably connected to the handlebar 10 to form a first rotatable connection, and the rear foot 30 is rotatably connected to the handlebar 10 to form a second rotatable connection. The support rod 40 is rotatably connected to both the front foot 20 and the rear foot 30 to form a third and a fourth rotatable connection, respectively. The support rod 40, the rear foot 30, the front foot 20, and the handlebar 10 form a four-bar linkage structure. At this time, the first, second, third, and fourth rotatable connections form a deformable quadrilateral, thus making the front foot 20, the rear foot 30, the handlebar 10, and the support rod 40 form a deformable four-bar linkage structure. Rotating any one of the front foot 20, the rear foot 30, the handlebar 10, and the support rod 40 will deform this four-bar linkage structure, thereby realizing the folding and unfolding of the frame 200.

[0030] It needs to be further understood that the locking member 50 is located at the first rotating connection and at the second rotating connection. The locking member 50 is suitable for locking and unlocking the rider 10. Locking the rider 10 with the locking member 50 also locks the four-bar linkage, preventing deformation and maintaining the unfolded state of the frame 200. After the locking member 50 unlocks the rider 10, the rider 10 can rotate to allow the frame 200 to have both a folded and unfolded state. In the unfolded state, the locking member 50 locks the rider 10, allowing the user to hold the rider 10 and move the stroller 1000. In the folded state, the locking member 50 unlocks the rider 10, allowing the rider 10 to be rotated and folded under external force.

[0031] In this embodiment, the rider 10 includes a rider tube 11, and a release assembly 60 is slidably disposed on the rider tube 11. The release assembly 60 has a first state and a second state. In the first state, the release assembly 60 is connected to the rider tube 11 and cannot move relative to the rider tube 11. At this time, the locking member 50 locks the rider 10, and the frame 200 is in an unfolded state. In the second state, the release assembly 60 can slide on the rider tube 11 and drive the locking member 50 to unlock the rider 10. At this time, the rider 10 can rotate, and the frame 200 can be in a folded state. With this configuration, during the unlocking process of the frame 200, the unlocking component 60 needs to be switched from the first state to the second state, that is, from being connected to the rider 10 to being able to slide relative to the rider 10. Then, the unlocking component 60 is driven to slide, thereby causing the locking member 50 to switch from locking the rider 10 to unlocking the rider 10. This requires a second operation to enable the rider 10 to rotate, so as to switch the frame 200 between the folded and unfolded states. This helps to improve the locking capability of the stroller 1000, thereby improving the safety of using the stroller 1000.

[0032] Furthermore, the frame 200 also includes a locking joint 70, which is located on the rider 10. One end of the locking joint 70 is connected to the rider 10, and the other end of the locking joint 70 is rotatably connected to the rear foot 30 to form a second rotatable connection. The locking member 50 is movably disposed inside the locking joint 70 and is throttle-connected to the release assembly 60.

[0033] Specifically, by setting the locking joint 70, on the one hand, the feasibility of the four-bar linkage structure can be ensured, and the manufacturing difficulty of the rider 10 can be simplified or reduced; on the other hand, it helps to reduce the assembly difficulty of the release assembly 60 and the locking component 50 and improve assembly efficiency.

[0034] It should be understood that one end of the locking joint 70 is connected to the rider 10, and the connection method can be one or more, such as welding, screwing, snap-fitting, or plugging. In this embodiment, the rider 10 is plugged into the first end of the locking joint 70 and fixed by the second pin 66. At the same time, the first end of the locking joint 70 is rotatably connected to the rear foot 30. The second end of the locking joint 70 is rotatably connected to the front foot 20 to form a first rotatable connection. The locking member 50 is movably disposed inside the locking joint 70 and can pop out to engage with the front foot 20 to lock and unlock the rider 10. Moreover, the locking member 50 is drive-connected to the release assembly 60 so that the movement of the locking member 50 can be achieved by operating the release assembly 60.

[0035] It should be noted that the locking element 50 and the front foot 20 can be coupled in an existing structure, such as plug-in or snap-fit, and this application does not impose any restrictions on this.

[0036] What needs further understanding is, such as Figure 6 , Figure 8 , Figure 10 and Figure 11 As shown, one end of the front foot 20 is rotatably connected to the second end of the locking joint 70. The second end of the locking joint 70 is provided with a movable groove 71, and the end of the front foot 20 connected to the locking joint 70 is provided with a mating structure. This mating structure can enter or disengage from the movable groove 71 as the front foot 20 rotates. A locking member 50 is movably disposed inside the locking joint 70. The locking member 50 has an insertion structure that passes through the locking joint 70 and mates with the mating structure, enabling the locking and unlocking of the rider 10 and the front foot 20.

[0037] In this embodiment, the mating structure is a plate-like structure, and the end of the mating structure facing the rider 10 has an arc-shaped surface, on which a locking part 21 is provided. Optionally, the locking part 21 is a groove. At the same time, the locking member 50 is a plate-like structure, and the end of the locking member 50 facing the front foot 20 is provided with an insertion structure. The end of the locking joint 70 facing the front foot 20 is provided with a through hole. At this time, the locking member 50 is movably disposed on the locking joint 70 and has a first position and a second position. When the locking member 50 is in the first position, the insertion structure of the locking member 50 can protrude out of the through hole and fit with the locking part 21, thereby realizing the locking of the rider 10 and the front foot 20, that is, realizing the unfolded state of the frame 200, that is, the locking member 50 is suitable for being inserted into the locking part 21 and locking the rider 10. When the locking member 50 is in the second position, the insertion structure is housed inside the locking joint 70 along with the locking member 50 and separates from the locking part 21 to unlock the rider 10.

[0038] Furthermore, the aforementioned slide rail 72 is mounted on the locking joint 70 and located on the side of the locking joint 70 facing the seat 100, and is fitted and connected along the handlebar tube 11 of the stroller 10, i.e., it is arranged along the extending direction of the handlebar tube 11. This arrangement helps to simplify the structure of the stroller 1000 and improve the ease of assembly of the stroller 1000. The seat height adjustment mechanism 82 is movably mounted on the slide rail 72, and the mounting base 90 is connected to the seat height adjustment mechanism 82, thereby enabling the mounting base 90 to move.

[0039] It needs to be further understood that the release assembly 60 includes a drive element 64, a release sleeve 61, and a button 62, such as Figure 7 , Figures 9 to 11 As shown, the drive member 64 is a plate-shaped structure and is movably disposed inside the rider 10. The first end of the drive member 64 is connected to the locking member 50. The release sleeve 61 is sleeved on the rider tube 11 and connected to the second end of the drive member 64. At this time, the release sleeve 61 is slidably disposed on the rider tube 11, and the sliding of the release sleeve 61 can drive the locking member 50 to move, thereby unlocking or locking the rider 10.

[0040] Combination Figure 12As shown, the release sleeve 61 is provided with a first mounting hole 613, the rider tube 11 is provided with a sliding groove 13, and the drive member 64 is provided with a through hole. At the same time, the release assembly 60 also includes a first pin 63, which is disposed on the release sleeve 61 and passes through the sliding groove 13, the through hole, and the first mounting hole 613. When the release sleeve 61 moves, the release sleeve 61 drives the first pin 63 to move, which in turn drives the drive member 64 inside the rider tube 11 to move, thereby unlocking the locking member 50 or locking the rider 10. Moreover, the arrangement of the sliding groove 13 and the first pin 63 also limits the movement distance of the release sleeve 61 and the drive member 64, thereby improving the safety of the release assembly 60 while ensuring the installation effect of the release assembly 60.

[0041] It should be noted that the release assembly 60 adopts the method of placing the drive component 64 inside the rider tube 11 and the sleeve of the release sleeve 61. On the one hand, this helps to ensure the connection between the release assembly 60 and the lock, simplifying the structure of the release assembly 60, and on the other hand, it can effectively improve the aesthetics of the frame 200.

[0042] In this embodiment, button 62 is disposed on the release slide 61, and button 62 has a locked state in which the release slide 61 is locked to the rider 10, and an unlocked state in which the release slide 61 is unlocked. By switching between the locked and unlocked states, button 62 enables the release slide 61 to have a fixed state in which it is connected and fixed to the rider tube 11, and an operational state in which it can slide on the rider tube 11. When button 62 is in the unlocked state, the release slide 61 can slide on the rider tube 11, thereby driving the locking member 50 to move, thereby locking the rider 10. When button 62 is in the locked state, button 62 connects the release slide 61 to the rider tube 11, and at this time, the locking member 50 cooperates with the front foot 20 to lock the rider 10.

[0043] It is important to further understand that the rider tube 11 of the rider 10 is provided with a locking hole 12, and the button 62 is rotatably mounted on the release sleeve 61. The button 62 has a locking part 622. In the first state, the locking part 622 is inserted into the locking hole 12, and in the second state, the locking part 622 is disengaged from the locking hole 12. By providing the locking hole 12 and the locking part 622, the locking part 622 can be inserted into or disengaged from the locking hole 12 by rotating the button 62, thereby connecting the release sleeve 61 to the rider tube 11. The structure is simple and the operation is convenient.

[0044] It should be noted that, in addition to the above-mentioned cooperation between button 62 and rider tube 11, the locked and unlocked states of button 62 can also be implemented by other structures, such as by components such as pins or springs. This application does not impose any restrictions on this.

[0045] like Figure 12 and Figure 13 As shown, the release sleeve 61 is provided with a second mounting hole 614, and the button 62 is provided with a pivot shaft 623. The button 62 is mounted on the release sleeve 61 via the pivot shaft 623, so that the button 62 can rotate around the pivot shaft 623. Optionally, the pivot shaft 623 is located in the middle of the button 62, and the locking part 622 is located at one end of the button 62. In this case, by driving the opposite ends of the button 62, the locking part 622 is moved using the lever principle, thereby realizing the insertion and disengagement of the locking part 622 with the locking hole 12. The structure is simple, the operation is convenient, and it helps to improve the operability of the release assembly 60.

[0046] It needs to be further understood that the button 62 also has an elastic portion 621. Along the moving direction of the release sleeve 61, the elastic portion 621 and the engaging portion 622 are respectively disposed on opposite sides of the pivot shaft 623. The elastic portion 621 has a first compression state that drives the engaging portion 622 to insert into the locking hole 12. Optionally, the elastic portion 621 has a sheet-like structure. One end of the elastic portion 621 is connected to one end of the button 62, and the other end of the elastic portion 621 abuts against the handlebar tube 11. The elastic portion 621 is set at an angle to the button 62. At this time, the elastic portion 621 has a first compression state and a second compression state. In the first compression state, the elastic portion 621 drives the button 62 to rotate until the engaging portion 622 is inserted into the locking hole 12. At the same time, the button 62 can be externally squeezed to compress the elastic portion 621, thereby changing the angle between the elastic portion 621 and the button 62, thus switching from the first compression state to the second compression state, and realizing that the engaging portion 622 disengages from the locking hole 12.

[0047] like Figure 6 and Figure 8As shown, the release assembly 60 also includes an elastic element 65 and a second pin 66. The second pin 66 is inserted into a fixing hole provided on the rider tube 11, and both ends of the second pin 66 pass through the locking joint 70. The elastic element 65 is disposed inside the locking joint 70. Optionally, the elastic element 65 is a spring, with one end abutting against the drive member 64 and the other end abutting against the second pin 66. In this case, the spring can compress and exert a force to drive the drive member 64 towards the front foot 20 when the release sleeve 61 moves. When there is no external force acting on the release sleeve 61, the spring can cause the drive member 64 to move, so that the drive member 64 inserts into the structure to a position that can engage with the mating structure, and drives the release sleeve 61 to a position where the snap-fit ​​portion 622 of the button 62 can be inserted into the locking hole 12. The second pin 66 ensures the connection and fixation between the locking joint 70 and the handlebar tube 11. At the same time, the second pin 66 can work with the elastic element 65 to reset the release assembly 60, which helps to reduce the difficulty of operating the release assembly 60 and thus improves the ease of use of the stroller 1000.

[0048] like Figure 14 and Figure 15 As shown, the release sleeve 61 is adapted to be fitted onto the rider 10, and the inner wall of the release sleeve 61 is provided with a support protrusion 612. The support protrusion 612 helps to reduce the wobbling of the release sleeve 61 during sliding, reduces sliding friction, and improves the stability of the release sleeve 61 sliding along the rider tube 11. Optionally, the release sleeve 61 has a hollow sliding part 611 inside, which is adapted to the outer wall of the rider tube 11. The projection of the hollow sliding part 611 onto the first cross section is elliptical. The first cross section is perpendicular to the moving direction of the release sleeve, and the inner wall of the release sleeve 61 forms an elliptical perimeter. Setting the projection of the hollow sliding part 611 onto the first cross section as elliptical helps to reduce the rotation of the release sleeve 61 on the rider tube 11, ensuring the proper installation of the snap-fit ​​part 622 of the button 62 and the locking hole 12, and improving the assembly efficiency and stability of the release sleeve 61 and the rider tube 11.

[0049] It is necessary to further understand that the ellipse has a major axis and a minor axis. Two support protrusions 612 are provided at each end of the major axis, meaning there are four support protrusions 612 in total, arranged in pairs along the major axis. Each group of support protrusions 612 is located at both ends of the major axis. Each group of support protrusions 612 includes two support protrusions 612, and these two support protrusions 612 are symmetrically arranged with the major axis as the center. This arrangement not only provides support and positioning for the release sleeve 61 in the major axis direction, preventing circumferential wobbling of the release sleeve 61, but also reduces the contact friction between the release sleeve 61 and the handlebar tube 11 caused by clearance fit in the minor axis direction, thus reducing the possibility of jamming and unevenness. This further improves the locking capability of the stroller 1000 and ensures its safety.

[0050] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A baby stroller, characterized in that, include: A frame, including a rider, the frame having a folded state and an unfolded state, the rider being rotatably configured to switch between the folded state and the unfolded state; A locking element, adapted to lock and unlock the rider, which locks the rider when the frame is in the unfolded state, and allows the rider to rotate and switch the frame to the folded state after the locking element unlocks the rider; Release assembly, the release assembly comprising: A drive unit, which is movably disposed inside the rider, and a first end of the drive unit is connected to the locking member; A release sleeve is movably fitted onto the handlebar and connected to the second end of the drive component. The inner wall of the release sleeve is provided with a support protrusion. A button is disposed on the release slide, and the button has a locked state in which the release slide is locked to the rider, and an unlocked state in which the release slide is unlocked. In the locked state, the release assembly is connected to the rider and drives the locking member to lock the rider. In the unlocked state, the release assembly can slide on the rider under the action of external force and drive the locking member to unlock the rider.

2. The stroller according to claim 1, characterized in that, The projection of the inner wall of the release sleeve onto the first cross section is elliptical, and the first cross section is perpendicular to the moving direction of the release sleeve.

3. The stroller according to claim 2, characterized in that, The ellipse has two support protrusions at each end of its major axis, and the two support protrusions are symmetrically arranged about the major axis.

4. The stroller according to claim 1, characterized in that, The handlebar is provided with a locking hole, and the button is rotatably mounted on the release sleeve. The button has a snap-fit ​​part. In the locked state, the snap-fit ​​part is inserted into the locking hole, and in the unlocked state, the snap-fit ​​part is disengaged from the locking hole.

5. The stroller according to claim 4, characterized in that, The button is mounted on the release sleeve via a pivot shaft. Along the moving direction of the release sleeve, the button has an elastic portion. The elastic portion and the locking portion are respectively disposed on opposite sides of the pivot shaft. The elastic portion has a first compression state that drives the locking portion to be inserted into the locking hole.

6. The stroller according to claim 1, characterized in that, The driver is provided with a slide groove, and the release assembly further includes a first pin. The first pin is disposed on the release sleeve and is adapted to pass through the slide groove. The second end of the drive member is connected to the release sleeve through the first pin.

7. The stroller according to claim 1, characterized in that, The locking assembly further includes a fixing hole provided on the rider tube body. The second pin is inserted into the fixing hole, and both ends of the second pin pass through the locking joint. An elastic element, one end of which abuts against the driving element, and the other end of which abuts against the second pin, wherein the elastic element has a working state that drives the driving element to move away from the release sleeve.

8. The stroller according to any one of claims 1-7, characterized in that, The frame includes: The front foot is rotatably connected to the rider and forms a first rotatable connection point; The rear foot is rotatably connected to the rider, forming a second rotatable connection point; A connecting rod is rotatably connected to the front foot and the rear foot respectively. The connecting rod, the rear foot, the front foot and the rider form a four-bar linkage structure. The locking member is located at the first rotatable connection.

9. The stroller according to claim 8, characterized in that, The chassis also includes: A locking joint is provided on the rider's hand, one end of the locking joint is connected to the rider's hand, and the other end of the locking joint is rotatably connected to the front foot to form a first rotatable connection point. The locking element is movably disposed inside the locking joint and is throttle-connected to the release assembly.

10. The stroller according to claim 9, characterized in that, The front foot is provided with a locking part, and the locking member is movably disposed on the locking joint. The locking member has a first position and a second position. In the first position, the locking member is adapted to be inserted into the locking part and lock the rider. In the second position, the locking member is separated from the locking part and unlocks the rider.

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