Infant folding trolley capable of being folded by single hand

Abstract

The utility model belongs to the technical field of baby carriages, and particularly relates to a baby folding carriage capable of being folded by one hand. The utility model relates to a baby folding stroller capable of being folded by one hand, which comprises a seat frame, a folding mechanism and a folding mechanism, and is characterized in that the seat frame comprises a seat plate and a backrest assembly; the backrest assembly is rotationally connected with the seat plate, a folding unlocking piece rotationally connected with the backrest assembly is arranged on the backrest assembly, an unlocking abutting face is arranged on the backrest assembly, and the unlocking abutting face is located on the side, opposite to the side where the folding unlocking piece rotates in the folding direction, of the folding unlocking piece; the bracket assembly comprises a bracket main body fixing seat, a first bracket, a second bracket, a bracket locking assembly and a wrench; the support locking assembly comprises a first locking piece and a second locking piece. When the baby folding cart folded by one hand is in a first state, the first locking hook is clamped into the second hook groove, and the second locking hook is clamped into the first hook groove; and when the baby folding cart folded by one hand is in the second state, the first locking piece and the second locking piece are separated from each other. The folding convenience of the baby carriage can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of baby carriage, specifically a single hand's folding baby folding car. BACKGROUND

[0002] Baby carriage as the common tool of guaranteeing baby safe travel, its design needs to ensure that the core components such as front leg, rear leg, handle and seat frame have the fixed nature when using. However, the traditional baby carriage generally exists the problems of bulky, inconvenient storage due to structure limitation. Since these components usually adopt rigid connection mode, the overall baby carriage cannot be compressed, and occupies larger space, which faces inconvenience in carrying, transporting or household storage. Although there is also the baby carriage that can be folded at present, but the folding storage process of this kind of baby carriage is many steps, and the operation is complicated, especially the women are difficult to fold the baby carriage when holding the baby. SUMMARY

[0003] Therefore, the utility model provides a single hand's folding baby folding car for solving the technical problem of inconvenient single hand storage of the baby carriage in the prior art.

[0004] In a first aspect, the utility model provides a single hand's folding baby folding car, including:

[0005] The seat frame includes a seat plate and a backrest assembly; the backrest assembly is rotatably connected to the seat plate; the backrest assembly is provided with a folding car unlocking piece rotatably connected to the backrest assembly; the backrest assembly is provided with an unlocking abutting surface; the unlocking abutting surface is located on the opposite side of the folding car unlocking piece rotating in the folding car direction;

[0006] The support assembly includes a support body fixing seat, a first support, a second support, a support locking assembly and a wrench; the support body fixing seat is connected to the seat frame through a fixing box; one support is rotatably connected to the support body fixing seat; the center position of the first support relative to the rotation of the support body fixing seat is a first position; the second support is rotatably connected to the support body fixing seat; the center position of the first support relative to the rotation of the support body fixing seat is a second position; the first position and the second position are not the same; the support locking assembly includes a first locking piece and a second locking piece; the first locking piece is fixedly connected to the first support; the second locking piece is rotatably connected to the support body fixing seat; the first locking piece is provided with a first locking hook and a first hook groove; the second locking piece is provided with a second locking hook and a second hook groove; the wrench is synchronously rotatably connected to the second locking piece;

[0007] When the single hand's folding baby folding car is in the first state, the first locking hook is clamped into the second hook groove, and the second locking hook is clamped into the first hook groove;

[0008] The first locking member and the second locking member are separated from each other when the single-hand folding baby stroller is in the second state.

[0009] Beneficial effects: the single-hand folding baby stroller of the utility model in the process of folding utilizes the folding unlocking member rotationally connected with the backrest assembly to push the wrench to rotate, the wrench drives the second locking member to rotate, the first locking hook and the second locking hook are respectively withdrawn from the hook groove, the first support is unlocked, the first support can rotate relative to the support main body fixing seat, the folding operation is completed, the whole folding process can be completed by rotating the backrest assembly with one hand, even if a woman holding a baby can also realize single-hand easy folding, therefore, the operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiments of the utility model, for the ordinary skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings, these are within the protection scope of the utility model.

[0011] Figure 1 It is three-dimensional structure schematic view of seat frame and support assembly assembly in the utility model;

[0012] Figure 2 It is three-dimensional structure schematic view of seat frame in the utility model;

[0013] Figure 3 It is position relation diagram of folding unlocking member in the unlocking process of the utility model;

[0014] Figure 4 It is position relation diagram of folding unlocking member in the unfolding process of the utility model;

[0015] Figure 5 It is exploded structure schematic view of support assembly in the utility model;

[0016] Figure 6 It is structure schematic view of locking assembly in the utility model;

[0017] Figure 7 It is structure schematic view of first locking member and first support fixed connection in the utility model;

[0018] Figure 8 It is sectional view when the single-hand folding baby stroller in the utility model is in unfolded state;

[0019] Figure 9 It is sectional view when the single-hand folding baby stroller in the utility model is in unlocking instant;

[0020] Figure 10The utility model discloses a folding baby stroller which can be folded by one hand.

[0021] Figure 11 The utility model discloses a folding baby stroller which can be folded by one hand.

[0022] Figure 12 The utility model discloses a folding baby stroller which can be folded by one hand.

[0023] Figure 13 The utility model discloses a folding baby stroller which can be folded by one hand.

[0024] Figure 14 The utility model discloses a folding baby stroller which can be folded by one hand.

[0025] Figure 15 The utility model discloses a folding baby stroller which can be folded by one hand.

[0026] Figure 16 The utility model discloses a folding baby stroller which can be folded by one hand.

[0027] Figure 17 The utility model discloses a folding baby stroller which can be folded by one hand.

[0028] Figure 18 The utility model discloses a folding baby stroller which can be folded by one hand.

[0029] Figure 19 The utility model discloses a folding baby stroller which can be folded by one hand.

[0030] Figure 20 The utility model discloses a folding baby stroller which can be folded by one hand.

[0031] Figure 21 The utility model discloses a folding baby stroller which can be folded by one hand.

[0032] Figure 22 The utility model discloses a folding baby stroller which can be folded by one hand.

[0033] Figure 23 The utility model discloses a folding baby stroller which can be folded by one hand.

[0034] Figure 24 It is a structure schematic view of the single-hand folding baby folding vehicle in the folded state in the utility model;

[0035] Figure 25 It is a structure schematic view of the single-hand folding baby folding vehicle in the folded state in the utility model;

[0036] Figure 26 It is a structure schematic view of the single-hand folding baby folding vehicle in the folded state in the utility model;

[0037] Figure 27 It is a structure schematic view of the single-hand folding baby folding vehicle in the folded state in the utility model;

[0038] Figure 28 It is a structure schematic view of the single-hand folding baby folding vehicle in the folded state in the utility model;

[0039] Figure 29 It is a structure schematic view of the single-hand folding baby folding vehicle in the folded state in the utility model;

[0040] Parts and their numbers in the figure:

[0041] Seat frame 1, seat plate 11, sliding groove 111, cylinder 112, backrest assembly 12, protruding part 121, handrail tooth 13, second inclined surface 131, handrail unlocking part 14, first abutting surface 141, first inclined surface 142, avoiding groove 143, first spring 15, second spring 16, fastener 17, handrail seat 18, seat frame fixing seat 19, support assembly 2, support main body fixing seat 21, fixing box 22, first support 23, second support 24, first locking part 25, first locking hook 251, first hook groove 252, second locking part 26, second locking hook 261, second hook groove 262, joint connecting part 27, wrench 28, first inclined slope 281, second inclined slope 282, first torsional spring 291, second torsional spring 292, folding unlocking reset torsional spring 293, fixing part 294, folding unlocking part 3, unlocking abutting surface 4, first arc surface 5, second arc surface 6, front leg assembly 7, rear leg assembly 8, handle 9, first position 101, second position 102. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the embodiments of the utility model. It should be noted that, in this document, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the elements defined by the statement "include" do not exclude the presence of additional identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the utility model and various features in the embodiments can be combined with each other, and all within the protection scope of the utility model. Embodiment 1

[0043] As shown in Figure 1 and Figure 2 The present embodiment provides a one-handed folding baby stroller, which mainly comprises a seat frame 1 and a support assembly 2, and the seat frame 1 comprises a seat plate 11 and a backrest assembly 12.

[0044] As shown in Figure 3 , wherein the backrest assembly 12 is rotatably connected with the seat plate 11, and the backrest assembly 12 is provided with a stroller folding unlocking piece 3 rotatably connected with the backrest assembly 12, and the backrest assembly 12 is provided with an unlocking abutting surface 4 located on the opposite side of the stroller folding unlocking piece 3 rotating towards the stroller folding direction;

[0045] As shown in Figure 3 , since the unlocking abutting surface 4 is located on the opposite side of the stroller folding unlocking piece 3 rotating towards the stroller folding direction, when the backrest assembly 12 rotates towards the stroller folding direction (the upper arrow in the figure) Figure 3 The upper arrow in the figure is the rotating direction of the backrest assembly, Figure 3(The small arrow at the bottom center indicates the rotation direction of the retractable unlocking component 3.) When rotating, the unlocking abutment surface 4 abuts against the retractable unlocking component 3, at which point the unlocking abutment surface 4 can prevent the retractable unlocking component 3 from rotating relative to the backrest assembly 12. For example... Figure 4 As shown, during the unfolding of the platform, the unlocking abutment can rotate ( Figure 4 The small arrow at the bottom center rotates in the direction of the vehicle retrieval unlocking component 3, while the large arrow at the top rotates in the direction of the backrest assembly 12 (towards the air-avoidance area).

[0046] like Figure 5 As shown, the bracket assembly 2 in this embodiment includes a bracket body fixing base 21, a first bracket 23, a second bracket 24, a bracket locking assembly, and a wrench 28.

[0047] The main body fixing seat 21 of the bracket is connected to the frame 1 through the fixing box 22, that is, the whole after the main body fixing seat 21 of the bracket is connected to the fixing box 22 is connected to the frame 1.

[0048] The main support bracket 21 serves as the core supporting component of the support assembly 2, providing a foundation for the installation and fixation of other parts within the support assembly 2. The fixing box 22 is directly connected to the main support bracket 21, further enhancing the stability and functionality of the structure, while also serving to fix the entire bracket frame.

[0049] The first bracket 23 is rotatably connected to the bracket body fixing seat 21, and the center position of the relative rotation between the first bracket 23 and the bracket body fixing seat 21 is the first position 101;

[0050] The second bracket 24 is rotatably connected to the bracket body fixing seat 21, and the center position of the relative rotation of the first bracket 23 and the bracket body fixing seat 21 is the second position 102, wherein the first position 101 and the second position 102 are different.

[0051] In this embodiment, both the first bracket 23 and the second bracket 24 are rotatably connected to the bracket body fixing base 21, allowing the first bracket 23 and the second bracket 24 to rotate around the bracket body fixing base 21. This rotatable connection allows the user to fold the stroller by rotating the first bracket 23 and the second bracket 24, thereby reducing space occupation and facilitating carrying and storage.

[0052] like Figure 6As shown, the support locking assembly in the embodiment includes a first locking member 25 and a second locking member 26, the first locking member 25 is fixedly connected with the first support 23, the second locking member 26 is rotatably connected with the support body fixing seat 21, the first locking member 25 is provided with a first locking hook 251 and a first hook groove 252, the second locking member 26 is provided with a second locking hook 261 and a second hook groove 262; the wrench 28 is synchronously rotatably connected with the second locking member 26.

[0053] As shown, Figure 7 the first locking member 25 can be fixedly connected with the first joint through a rivet to form an integral structure, so that the first locking member 25 can rotate synchronously with the first joint.

[0054] The single-hand folding stroller in the embodiment has at least two states, namely an unfolded state and a folded state, which are also referred to as a first state and a second state respectively in this article.

[0055] As shown, Figure 8 when the single-hand folding stroller is in the first state, the first locking hook 251 is clamped into the second hook groove 262, and the second locking hook 261 is clamped into the first hook groove 252;

[0056] Since the locking hook on the first locking member 25 is clamped with the hook groove on the second locking member 26, and the locking hook on the second locking member 26 is also clamped with the hook groove on the first locking member 25, the first locking member 25 and the second locking member 26 are in a locked state and cannot rotate relative to each other. Since the first locking member 25 is fixedly connected with the first support 23, the first support 23 cannot rotate either, so that the stroller can be kept in a stable unfolded state, ensuring its safety and reliability when in use.

[0057] As shown, Figure 10 when the single-hand folding stroller is in the second state, the first locking member 25 and the second locking member 26 are disengaged from each other.

[0058] As shown, Figure 9 when the stroller needs to be folded, the second locking member 26 can be rotated to disengage the first locking member 25 and the second locking member 26 from each other. Specifically, the first locking hook 251 is withdrawn from the second hook groove 262, and the second locking hook 261 is withdrawn from the first hook groove 252. At this time, the first locking member 25 is no longer constrained by the second locking member 26, and the first support 23 can rotate freely around the support body fixing seat 21, thereby achieving convenient folding of the stroller.

[0059] In the embodiment, the user can easily adjust the angular position of the second locking member 26 by rotating the wrench 28, thereby controlling the locking assembly to enter the locked state or the unlocked state.Figure 13 The position of the wrench 28 in the locked state is shown, Figure 14 The position of the wrench 28 in the unlocked state is shown, and Figure 15 The position of the wrench 28 in the folded state is shown. This design makes the state switching of the locking assembly more intuitive and convenient.

[0060] When the single-handed folding stroller is converted from the first state to the second state, the folding unlocking member 3 pushes the wrench 28 to rotate, and the wrench 28 drives the second locking member 26 and the first locking member 25 to disengage with each other.

[0061] As shown in the figures, Figure 3 During the folding process of the stroller, the folding unlocking member 3 rotates to a position where one side abuts against the wrench 28 and the other side abuts against the unlocking abutting surface 4 on the backrest assembly 12. In this way, the folding unlocking member 3 can push the wrench 28 to rotate while continuing to rotate with the backrest, so that the first locking member 25 and the second locking member 26 disengage with each other,

[0062] As shown in the figures, Figure 4 During the unfolding process of the stroller, i.e., when the single-handed folding stroller is converted from the second state to the first state, the folding unlocking member 3 is pushed by the wrench 28 to rotate away from the wrench 28. In this way, the wrench 28 will not drive the second locking member 26 to rotate, avoiding the disengagement of the first locking member 25 and the second locking member 26, so that the stroller can form a stable unfolded structure after unfolding.

[0063] In order to facilitate the pushing of the wrench 28 by the folding unlocking member 3, a force receiving surface is provided on the wrench, which is a slope. During the folding process of the stroller, the force receiving surface is pushed by the folding unlocking member 3.

[0064] As shown in the figures, Figure 3 and Figure 4 The backrest assembly 12 is provided with a first arc surface 5, which and the unlocking abutting surface 4 are located on opposite sides of the folding unlocking member 3. The folding unlocking member 4 is provided with a second arc surface 6 matching the first arc surface 5. The backrest assembly 12 is provided with an avoidance area. When the folding unlocking member 4 touches the wrench 28 during the unfolding process of the stroller, it is pressed to rotate to the avoidance area position by the wrench 28, and rotates to the position abutting against the unlocking abutting surface 4 during the folding process of the stroller. It also includes a folding unlocking reset torsional spring 293, one end of which is connected with the folding unlocking member 3 and the other end is connected with the backrest assembly 12. The folding unlocking reset torsional spring 293 drives the folding unlocking member 3 to rotate to the position abutting against the unlocking abutting surface 4 under the elastic force.

[0065] When the backrest assembly 12 rotates in the unfolding direction, the retraction unlocking member 3, pushed by the retraction lever 28, will enter the clearance area of ​​the backrest assembly 12. The lever 28 will not experience any force when passing through this area. When the retraction lever 28 leaves this area, the retraction unlocking member 3 will re-emerge from the clearance area under the torque of the retraction unlocking reset torsion spring 293.

[0066] like Figure 11 As shown, the support assembly 2 also includes a joint connector 27. One end of the joint connector 27 is rotatably connected to the first support 23, and the other end is rotatably connected to the second support 24. The position where the joint connector 27 is rotatably connected to the first support 23 is the third position, and the position where the joint connector 27 is rotatably connected to the second support 24 is the fourth position. The third position is different from the first position, the second position, and the fourth position. The fourth position is different from the first position 101 and the second position 102.

[0067] In this embodiment, the first support 23 and the second support 24 are connected to each other via a joint connector 27, enabling their linkage. When the stroller needs to be folded, simply rotate the first support 23 around a first position. During this rotation, the first support 23 drives the joint connector 27 to rotate synchronously, and the joint connector 27 further drives the second support 24 to rotate around a second position. Through this linkage mechanism, the first support 23 and the second support 24 rotate towards each other, thereby completing the folding operation of the stroller.

[0068] In this embodiment, the wrench 28 and the second locking member 26 are rotatably connected to the bracket body fixing seat 21 by the first pin, and the second locking member 26 and the wrench 28 are connected as a whole by the second pin.

[0069] The single-hand folding stroller in this embodiment also includes a first torsion spring 291. One end of the first torsion spring 291 is connected to the fixing box 22, and the other end is connected to the first bracket 23. When the single-hand folding stroller is in the first state, the first torsion spring 291 undergoes elastic deformation. When the single-hand folding stroller changes from the folded state to the unfolded state, the first bracket 23, during rotation, overcomes the elastic force of the first torsion spring 291, causing the first torsion spring 291 to undergo elastic deformation. When the single-hand folding stroller changes from the unfolded state to the folded state, the first torsion spring 291 drives the first bracket 23 to rotate to the folded position.

[0070] The single-hand folding baby stroller of the embodiment further comprises a second torsion spring 292, one end of which is connected with the fixed box 22 and the other end of which is connected with the second support 24. The second torsion spring 292 is elastically deformed when the single-hand folding baby stroller is in the first state. When the single-hand folding baby stroller is converted from the folded state to the unfolded state, the second support 24 overcomes the elastic force of the second torsion spring 292 in the rotating process, so that the second torsion spring 292 is elastically deformed. When the single-hand folding baby stroller is converted from the unfolded state to the folded state, the second torsion spring 292 drives the first support 23 to rotate to the folded position.

[0071] The first torsion spring 291 and the second torsion spring 292 can be installed in the following manner:

[0072] The first joint is provided with a first mounting hole, one end of the first torsion spring 291 is inserted into the first mounting hole, and the other end is connected with the first fixed column of the fixed box 22. The second joint is provided with a second mounting hole, one end of the second torsion spring 292 is inserted into the second mounting hole, and the other end is connected with the second fixed column of the fixed box 22.

[0073] As shown in Figure 12 The single-hand folding baby stroller of the embodiment further comprises a stroller unlocking reset torsion spring 293, one end of which is in abutment with the wrench 28, and the other end thereof is in abutment with the support main body fixing seat 21. The stroller unlocking reset torsion spring 293 is used to reset the wrench 28, so as to drive the second locking member 26 to reset, so as to ensure that the support locking assembly can be reliably locked.

[0074] The single-hand folding baby stroller of the embodiment further comprises a fixing member 294, which is connected with the two parts separated above the support main body fixing seat 21, so as to increase the stability of the structure, maintain sufficient clearance in the internal space, and enable the first support 23 and the second support 24 to rotate freely. The fixing member 294 is provided with a first guide groove, the first support 23 is provided with a first guide portion, at least a part of the first guide portion is located in the first guide groove, the second support 24 is provided with a second guide portion, and at least a part of the second guide portion is located in the second guide groove.

[0075] The embodiment uses the fixing member 294 to guide the first support 23 and the second support 24 to rotate strictly around the respective rotation centers, so as to improve the reliability of folding and unfolding the baby stroller. The first guide portion and the second guide portion can be provided in a ring-shaped structure. In order to further provide reliability and stability, a plurality of guide grooves and guide portions can be provided, and the first guide portion and the second guide portion are alternately arranged.

[0076] AsFigure 17 As shown in the drawings, the seat frame 1 comprises a seat plate 11, a backrest, an armrest seat 18, an armrest tooth 13 and an armrest unlocking piece 14, the seat plate 11 is arranged on the seat frame 1, as shown in the drawings Figure 18 As shown in the drawings, when the backrest assembly 12 of the one-handed folding stroller is in the first state, at least a part of the armrest tooth 13 is located in the seat plate 11, and at least a part is located in the armrest seat 18; wherein the seat plate 11 and the backrest 12 are respectively rotatably connected with the seat frame fixing seat 19 of the one-handed folding stroller.

[0077] As shown in the drawings, when the backrest assembly 12 of the one-handed folding stroller is in the second state, the backrest rotates to a first preset angle (an angle in Figure 19 As shown in the drawings, when the backrest assembly 12 of the one-handed folding stroller is in the second state, the backrest rotates to a first preset angle (an angle in Figure 16 As shown in the drawings, when the backrest assembly 12 of the one-handed folding stroller is in the second state, the backrest rotates to a first preset angle (an angle in Figure 19 As shown in the drawings, when the backrest assembly 12 of the one-handed folding stroller is in the second state, the backrest rotates to a first preset angle (an angle in Figure 19 As shown in the drawings, when the backrest assembly 12 of the one-handed folding stroller is in the second state, the backrest rotates to a first preset angle (an angle in

[0078] The armrest unlocking piece 14 is provided with a first abutting surface 141, the first abutting surface 141 abuts against the protruding part 121, and the position of the protruding part 121 abutting against the first abutting surface 141 is away from the rotation center of the protruding part 121 in the second preset direction when the backrest rotates in the first preset direction.

[0079] By setting the linkage mechanism of the armrest unlocking piece 14 and the armrest tooth 13, when the backrest rotates to a preset angle, the armrest unlocking piece 14 pushes the armrest tooth 13 to completely exit from the seat plate 11, so that the fixed relationship between the armrest seat 18 and the seat plate 11 is released, thereby realizing the smooth folding of the stroller, reducing the occupied space, and facilitating carrying and storage. In the unfolded state, a part of the armrest tooth 13 is located in the seat plate 11, and a part is located in the armrest seat 18, which ensures the stability of the armrest, prevents the baby from sliding or accidentally falling from the stroller, and provides additional safety protection. At the same time, the design of the armrest is also convenient for the baby to grasp, which increases their sense of security. The utility model not only solves the folding problem, but also retains the functionality of the armrest, which can help the baby to maintain balance and provide gripping support, and meets the various use requirements of the stroller.

[0080] The backrest assembly 12 further comprises a first spring 15 arranged in the second preset direction, the first spring 15 is located on the side of the armrest unlocking piece 14 away from the protruding part 121, and the first spring 15 is compressed when the armrest unlocking piece 14 is pushed by the protruding part 121 to the first preset position in the second preset direction.

[0081] The backrest assembly 12 also includes a second spring 16, which is positioned along the direction in which the armrest teeth 13 are pushed out of the seat plate 11 by the armrest unlocking member 14. The second spring 16 is located between the armrest seat 18 and the armrest teeth 13, and is compressed when the armrest teeth 13 are pushed out of the seat plate 11 by the armrest unlocking member 14. The seat plate 11 has a sliding groove 111 in which the armrest unlocking member 14 can slide relative to the seat plate 11. The armrest unlocking member 14 has a clearance groove 143 through which the fastener 17 passes. Example 2

[0082] like Figure 20 and Figure 24 This embodiment also provides a single-hand folding baby stroller, which includes a front leg assembly 7, a rear leg assembly 8, and the single-hand folding baby stroller in Embodiment 1. The rear leg assembly 8 is connected to the support body fixing seat 21, the front leg assembly 7 is connected to the second support 24, and the backrest assembly 12 includes a handle 9, which is connected to the first support 23.

[0083] The following describes the folding and unfolding process of a one-handed folding stroller:

[0084] Folding process:

[0085] Handrail unlocking: such as Figure 18 , Figure 20 As shown, rotating the backrest causes the protrusion 121 of the backrest assembly 12 to push the armrest unlocking member 14 to move. After the armrest unlocking member 14 is subjected to force, it pushes the armrest teeth 13 with the first inclined surface 142, and the armrest teeth 13 are fully inserted into the armrest seat 18. The armrest seat 18 is unlocked and can rotate around the screw.

[0086] Bracket unlocking: such as Figure 21 As shown, the retraction unlocking component 3 approaches the lever 28 as the backrest assembly 12 rotates. Figure 22 As shown, the folding unlocking component 3 pushes open the lever 28, unlocking the locking assembly. This allows the backrest assembly 12 to continue moving under its own weight. Figure 21 Rotate in the direction of the middle arrow.

[0087] After the locking component is unlocked, the handlebar 9 assembly, under the action of its own weight and the force of the torsion spring, moves towards... Figure 21 The one with the middle arrow pointing in the opposite direction will automatically rotate to... Figure 23 The location.

[0088] Unfolding process:

[0089] like Figure 24 and Figure 25 As shown, the handle 9 assembly drives the first bracket 23 to unfold outward, as...Figure 26 As shown, the first support 23 drives the second support 24 to unfold outward through the joint connector 27, overcoming the elastic resistance of the first and second torsion springs 292, and forcing the support to rotate around the axis to the unfolded position.

[0090] Automatic locking: When the bracket is in position, the first locking hook 251 and the second hook groove 262, and the second locking hook 261 and the first hook groove 252 automatically engage and lock under the action of the retraction unlocking and reset torsion spring 293.

[0091] like Figure 27 and Figure 28 As shown, when the backrest assembly 12 rotates in the direction of the arrow, the retraction unlocking member 3 will enter the clearance area of ​​the backrest assembly 12 when it is pushed by the wrench 28. The wrench 28 will not be subjected to any force when passing through this area. When the retraction wrench 28 leaves this area, the retraction unlocking member 3 will re-emerge from the clearance area under the torque of the torsion spring.

[0092] Figure 20 The middle diagram shows the structure with the seat frame facing forward. In this case, the carriage retracts forward. Alternatively, it can be... Figure 20 When the seat frame is reversed, the carriage retracts backward. For example... Figure 27 As shown, the wrench 28 has a first ramp 281 and a second ramp 282 on opposite sides. When the stroller is folded forward, the folding unlocking component 3 presses the first ramp 281 to rotate the wrench 28 and unlock it. When the stroller is folded backward, the folding unlocking component 3 presses the second ramp 282 to rotate the wrench 28 and unlock it.

[0093] like Figure 29 As shown, as the backrest assembly 12 continues to rotate, the protrusion 121 of the backrest assembly 12 moves away from the armrest unlocking member 14, the pushing force on the armrest unlocking member 14 disappears, and the armrest unlocking member 14 returns to its original position under the pressure of the first spring 15. The pushing force on the armrest teeth 13 from the armrest unlocking member 14 also disappears, and the armrest teeth 13 return to their original position when the teeth are aligned under the pressure of the second spring 16. The armrest seat 18 is locked. The backrest assembly 12 is locked onto the seat plate 11, the seat frame 1 enters normal use, and the unfolding of the platform is completed.

[0094] The above description is merely a specific embodiment of this utility model. Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model.

Claims

1. A baby stroller that folds up with one hand, characterized in that, include: A seat frame includes a seat plate and a backrest assembly; the backrest assembly is rotatably connected to the seat plate, and the backrest assembly is provided with a retraction unlocking component rotatably connected to the backrest assembly; the backrest assembly is provided with an unlocking abutment surface, and the unlocking abutment surface is located on the side opposite to the retraction unlocking component rotating in the retraction direction. A bracket assembly includes a bracket body fixing base, a first bracket, a second bracket, a bracket locking assembly, and a wrench. The bracket body fixing base is connected to a frame via a fixing box. The first bracket is rotatably connected to the bracket body fixing base, with the center position of the relative rotation between the first bracket and the bracket body fixing base being a first position. The second bracket is rotatably connected to the bracket body fixing base, with the center position of the relative rotation between the first bracket and the bracket body fixing base being a second position, wherein the first position and the second position are different. The bracket locking assembly includes a first locking member and a second locking member. The first locking member is fixedly connected to the first bracket, and the second locking member is rotatably connected to the bracket body fixing base. The first locking member is provided with a first locking hook and a first hook groove, and the second locking member is provided with a second locking hook and a second hook groove. The wrench is synchronously rotatably connected to the second locking member. When the baby stroller is in the first state and can be folded with one hand, the first locking hook engages with the second hook groove, and the second locking hook engages with the first hook groove. When the stroller is in its second state and folded with one hand, the first and second locking parts disengage from each other.

2. The single-hand folding baby stroller according to claim 1, characterized in that, When the folding stroller is switched from the first state to the second state by one hand, the folding unlocking mechanism pushes the wrench to rotate, and the wrench causes the second locking mechanism and the first locking mechanism to disengage from each other.

3. The single-hand folding baby stroller according to claim 1, characterized in that, When the baby stroller is folded with one hand and transitions from the second state to the first state, the folding unlocking mechanism rotates in a direction away from the wrench under the push of the wrench. The wrench is provided with a force-bearing surface, which is an inclined surface. During the folding process, the force-bearing surface is pushed by the folding unlocking mechanism.

4. The single-hand folding baby stroller according to claim 3, characterized in that, It also includes a joint connector, one end of which is rotatably connected to the first bracket and the other end of which is rotatably connected to the second bracket. The joint connector is rotatably connected to the first bracket at a third position and to the second bracket at a fourth position. The third position is different from the first, second, and fourth positions, and the fourth position is different from the first and second positions.

5. The single-hand folding baby stroller according to claim 3, characterized in that, The backrest assembly has a first arc-shaped surface, which is located on opposite sides of the folding unlocking component. The folding unlocking component has a second arc-shaped surface that matches the first arc-shaped surface. The backrest assembly has a clearance area. When the folding unlocking component touches the wrench during the unfolding process, it is pressed and rotated to the clearance area position by the wrench. During the folding process, it rotates to the position where it abuts the unlocking contact surface. The assembly also includes a folding unlocking reset torsion spring. One end of the folding unlocking reset torsion spring is connected to the folding unlocking component, and the other end is connected to the backrest assembly. Under the action of elastic force, the folding unlocking reset torsion spring drives the folding unlocking component to rotate to the position where it abuts the unlocking contact surface.

6. The single-hand folding baby stroller according to claim 5, characterized in that, It also includes a first torsion spring and a second torsion spring. One end of the first torsion spring is connected to the fixed box and the other end is connected to the first bracket. When the baby folding stroller is folded with one hand in the first state, the first torsion spring undergoes elastic deformation. One end of the second torsion spring is connected to the fixed box and the other end is connected to the second bracket. When the baby folding stroller is folded with one hand in the first state, the second torsion spring undergoes elastic deformation.

7. The single-hand folding baby stroller according to claim 6, characterized in that, One end of the vehicle retraction unlocking and reset torsion spring abuts against the wrench, and the other end abuts against the bracket body fixing seat.

8. The baby folding stroller that can be folded with one hand according to any one of claims 1 to 7, characterized in that, The backrest assembly includes a backrest, an armrest seat, armrest teeth, and an armrest unlocking member. When the stroller backrest assembly is in a first state with one hand folding, at least a portion of the armrest teeth is located in the seat plate, and at least a portion is located in the armrest seat. When the baby stroller backrest assembly is in the second state and can be folded with one hand, the backrest rotates to the first preset angle in the first preset direction, and the armrest unlocking member is pushed to the first preset position in the second preset direction by the protrusion, so that the armrest unlocking member completely retracts the armrest teeth from the seat plate into the armrest seat.

9. The single-hand folding baby stroller according to claim 8, characterized in that, The armrest unlocking component is provided with a first abutting surface, which abuts against the protrusion. When the protrusion rotates with the backrest in a first preset direction, the position on the protrusion that abuts against the first abutting surface is away from the rotation center of the protrusion in a second preset direction.

10. The single-hand folding stroller according to claim 9, characterized in that, It also includes a front leg assembly and a rear leg assembly. The rear leg assembly is connected to the support body fixing seat, the front leg assembly is connected to the second support, and the backrest assembly includes a handle, which is connected to the first support.

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