Baby stroller frame and baby stroller

Abstract

The present invention discloses a baby carriage frame and a baby carriage, which relate to the field of manual vehicles and are used to optimize the structure of the baby carriage frame. The baby carriage frame includes a frame body, a pedal assembly and a locking mechanism. The frame body is constructed to have a folded state and an unfolded state. The pedal assembly is rotatably mounted on the frame body. The locking mechanism includes a locking mechanism and an unlocking mechanism; the locking mechanism and the unlocking mechanism are arranged between the frame body and the pedal assembly, the locking mechanism is constructed to make the pedal assembly in the following locked state relative to the frame body, the unlocking mechanism is constructed to make the pedal assembly in the unlocked state relative to the frame body, and the locked state between the pedal assembly and the frame body is unlocked as the frame body is unlocked. The baby carriage frame provided by the above technical solution enables the unfolding and folding of the pedal assembly to be synchronized with the unfolding and folding of the frame body.

Description

Technical Field

[0001] The present invention relates to the field of manual vehicles, and in particular to a baby carriage frame and a baby carriage. Background Art

[0002] Baby strollers provide convenience for outdoor activities for infants and young children. In the related art, baby strollers basically have a folding function. Some baby strollers with more functions are equipped with additional footrest components in addition to the footrest of the front foot group.

[0003] The inventors have found that the prior art has at least the following problems: In the related art, the pedal component needs to be provided with an additional folding structure. Before folding the frame, the pedal assembly must be folded first, which makes the baby stroller inconvenient to use and the folding operation of the whole stroller is complicated. Summary of the invention

[0004] The present invention provides a baby carriage frame and a baby carriage, which are used to optimize the structure of the baby carriage frame.

[0005] Some embodiments of the present invention provide a baby carriage frame, comprising:

[0006] The frame body is configured to have a folded state and an unfolded state;

[0007] A pedal assembly rotatably mounted on the frame body; and

[0008] The locking mechanism includes a locking mechanism and an unlocking mechanism; the locking mechanism and the unlocking mechanism are arranged between the frame body and the pedal assembly, the locking mechanism is constructed so that the pedal assembly is in the following locked state relative to the frame body, and the unlocking mechanism is constructed so that the pedal assembly is in the following unlocked state relative to the frame body, and the locked state between the pedal assembly and the frame body is unlocked as the frame body is unlocked.

[0009] In some embodiments, the frame body includes a front leg tube joint;

[0010] The locking mechanism comprises a first meshing tooth and a locking gear; the first meshing tooth is arranged on the front leg tube joint, and the locking gear is provided with a second meshing tooth;

[0011] When the first meshing teeth and the second meshing teeth are meshed with each other, the pedal assembly is in a locked state relative to the frame body; when the first meshing teeth and the second meshing teeth are disengaged, the pedal assembly is in an unlocked state relative to the frame body.

[0012] In some embodiments, a guide slope is provided on an end surface of the second meshing tooth facing the first meshing tooth.

[0013] In some embodiments, the frame body further comprises a cover body, and the cover body is arranged on a side of the front leg tube joint away from the locking mechanism;

[0014] The unlocking mechanism comprises a pedal unlocking pin and an unlocking inclined plane, wherein the pedal unlocking pin is arranged at the front leg tube joint so as to be movable along its own axial direction, and the pedal unlocking pin penetrates and extends out of the front leg tube joint; the cover body is provided with the unlocking inclined plane;

[0015] Wherein, the cover body is constructed as follows: the unlocking slope abuts against the pedal unlocking pin so that the pedal unlocking pin moves along its own axial direction to push open the second meshing tooth, so that the first meshing tooth and the second meshing tooth are disengaged.

[0016] In some embodiments, the stroller frame further comprises:

[0017] The posture adjustment mechanism is arranged between the footrest assembly and the frame body, and is configured to adjust the posture of the footrest assembly relative to the frame body in the unfolded state.

[0018] In some embodiments, the posture adjustment mechanism is disposed on a side of the locking gear away from the front leg tube joint; the adjustment mechanism is configured to cause the second meshing tooth of the locking gear to disengage from the first meshing tooth.

[0019] In some embodiments, the posture adjustment mechanism includes:

[0020] A pedal joint having a first mounting hole;

[0021] A sliding sleeve having a through hole therethrough, wherein the inner wall of the sliding sleeve is provided with an abutting inclined surface protruding inwardly; an end of the locking gear away from the second meshing tooth is provided with an arc surface protruding outwardly; the abutting inclined surface is located between the arc surface and the second meshing tooth, and the arc surface and the abutting inclined surface abut each other; the sliding sleeve is rotatably provided inside the first mounting hole; and

[0022] A driving member connected to the sliding sleeve so as to enable the sliding sleeve to rotate relative to the pedal joint;

[0023] The rotation of the sliding sleeve relative to the pedal joint causes the abutting inclined surface to move axially with the arc surface, so that the first meshing tooth and the second meshing tooth are out of meshing.

[0024] In some embodiments, the driving member includes a pull rope, the outer surface of the sleeve is provided with a groove along the circumference, one section of the pull rope is located in the groove, one end of the pull rope is fixed to the sleeve, and the other end of the pull rope serves as a force-applying end.

[0025] In some embodiments, the sliding sleeve is provided with an avoidance groove, and the avoidance groove matches the shape of the arc surface to avoid interference between the abutting inclined surface and the arc surface during the process of installing the arc surface to the sliding sleeve.

[0026] In some embodiments, the posture adjustment mechanism further includes:

[0027] A return spring is arranged between the sliding sleeve and the second meshing tooth, and the return spring is configured to return the sliding sleeve.

[0028] In some embodiments, the footrest assembly includes:

[0029] A transverse tube is inserted into the first mounting hole of the pedal joint, and the pedal joint also has a second mounting hole communicated with the first mounting hole;

[0030] Wrench fixing seat;

[0031] A wrench is rotatably mounted on the wrench fixing seat, the driving member is connected to the wrench, and the driving member is driven to move by the rotation of the wrench relative to the wrench fixing seat; and

[0032] A bending tube, one end of which is fixedly connected to the second mounting hole of the pedal joint, and the other end of which is fixedly connected to the wrench fixing seat.

[0033] In some embodiments, a bending tube is installed on each side of the wrench fixing seat in the length direction, and a pedal joint is installed on one end of each bending tube away from the wrench fixing seat.

[0034] In some embodiments, the stroller frame further comprises:

[0035] The driving component is arranged between the frame body and the pedal assembly, and is configured to drive the pedal assembly to be folded along with the frame body when the pedal assembly is in an unlocked state.

[0036] In some embodiments, the driving component includes a tension spring, one end of which is fixedly connected to the frame body, and the other end of which is fixedly connected to the pedal assembly.

[0037] Other embodiments of the present invention provide a baby stroller, comprising a baby stroller frame provided by any technical solution of the present invention.

[0038] The baby stroller frame provided by the above technical solution satisfies the connection relationship between the pedal assembly and the frame body: when the various parts of the frame body are unlocked, the pedal assembly is also unlocked; when the various parts of the frame body are locked, the pedal assembly is also locked. This allows the unfolding and folding of the pedal assembly to be synchronized with the unfolding and folding of the frame body, greatly simplifies the complexity of the folding operation of the pedal assembly, and optimizes the structure of the baby stroller frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary 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. In the drawings:

[0040] Figure 1 A schematic diagram of the three-dimensional structure of a baby stroller frame provided by an embodiment of the present invention;

[0041] Figure 2 A schematic diagram of the exploded structure of a baby stroller frame provided by an embodiment of the present invention;

[0042] Figure 3 A schematic diagram of the structure of the connection between the handlebar assembly and the rear foot assembly of the baby stroller frame provided by an embodiment of the present invention;

[0043] Figure 4 A schematic diagram of the side structure of a baby stroller frame provided by an embodiment of the present invention;

[0044] Figure 5 A schematic diagram of the three-dimensional structure of a pull ring of a baby stroller frame provided by an embodiment of the present invention;

[0045] Figure 6a for Figure 5 An enlarged schematic diagram of the local side view direction at M;

[0046] Figure 6b A schematic diagram of the locking hole structure of the pedal unlocking pin disengaging from the fixing tube in the process of pulling the pull ring to unlock the frame body;

[0047] Figure 6c A schematic diagram of the structure in which the second lock hook leaves the fixing rod in the process of continuing to pull the pull ring to unlock the frame body;

[0048] Figure 6d A schematic diagram of the structure of the hook mounting seat leaving the fixing rod in the process of continuing to pull the pull ring to unlock the frame body;

[0049] Figure 6e It is a schematic diagram of the transient structure in which the frame body can be folded after being unlocked;

[0050] Figure 7aA schematic diagram of the three-dimensional structure of the second lock hook leaving the fixing rod in the process of continuing to pull the pull ring to unlock the frame body;

[0051] Figure 7b A schematic diagram of the three-dimensional structure of the hook mounting seat leaving the fixing rod in the process of continuing to pull the pull ring to unlock the frame body;

[0052] Figure 7c is an enlarged schematic diagram of the third pivot C;

[0053] Figure 8 A schematic diagram of the structure of the connection between the front foot assembly and the pedal assembly of a baby stroller frame provided by some embodiments of the present invention;

[0054] Figure 9a A schematic diagram of the exploded structure of a footrest assembly of a baby stroller frame provided in some embodiments of the present invention;

[0055] Figure 9b A schematic diagram of the position of the unlocking inclined plane of the unlocking mechanism of the baby stroller frame provided in some embodiments of the present invention;

[0056] Fig.10 A schematic diagram of a three-dimensional structure of a pedal joint of a pedal assembly of a baby stroller frame provided in some embodiments of the present invention;

[0057] Fig.11 A schematic diagram of a three-dimensional structure of a locking gear of a pedal assembly of a baby stroller frame provided by some embodiments of the present invention;

[0058] Fig.12 A schematic diagram of a three-dimensional structure of a front leg tube joint of a frame body of a baby stroller frame provided in some embodiments of the present invention;

[0059] Fig.13 A schematic diagram of the three-dimensional structure of the front leg tube joint and the pedal unlocking pin of the frame body of the baby stroller frame provided in some embodiments of the present invention;

[0060] Fig.14a A schematic diagram of a three-dimensional structure of a sliding sleeve of a footrest assembly of a baby stroller frame provided by some embodiments of the present invention;

[0061] Fig.14b Another schematic diagram of the three-dimensional structure of the sliding sleeve of the footrest assembly of the baby stroller frame provided by some embodiments of the present invention;

[0062] Fig.15 A schematic diagram of a three-dimensional structure of a wrench fixing seat and a wrench of a baby stroller frame provided in some embodiments of the present invention;

[0063] Fig.16 A schematic diagram of a three-dimensional structure of a wrench of a footrest assembly of a baby stroller frame provided by some embodiments of the present invention;

[0064] Figure 17a to Figure 17d A schematic diagram of the folding process of a baby stroller frame provided in some embodiments of the present invention. DETAILED DESCRIPTION

[0065] Combine the following Figure 1 to Figure 17d The technical solution provided by the present invention is described in more detail.

[0066] See also Figures 1 to 7b The embodiment of the present invention provides a baby carriage frame, comprising a frame body 1, a pedal assembly 2 and a locking mechanism 3. The frame body 1 is configured to have a folded state and an unfolded state. Figure 1 The pedal assembly 2 is rotatably mounted on the frame body 1. The locking mechanism 3 includes a locking mechanism 31 and an unlocking mechanism 32, see Figure 9a The locking mechanism 31 and the unlocking mechanism 32 are provided between the frame body 1 and the footrest assembly 2. The locking mechanism 31 is configured to put the footrest assembly 2 in a locked state relative to the frame body 1, and the unlocking mechanism 32 is configured to put the footrest assembly 2 in an unlocked state relative to the frame body 1.

[0067] See also Figure 8 In some embodiments, the baby stroller frame further includes a driving component 5, which is disposed between the frame body 1 and the pedal assembly 2, and the driving component 5 is configured to drive the pedal assembly 2 to be folded along with the frame body 1 when the pedal assembly 2 is in an unlocked state.

[0068] The frame body 1 may adopt an existing structure. In order to facilitate the description of the technical solutions of various embodiments, some specific implementations of the frame body 1 are introduced below.

[0069] See also Figures 1 to 4 In some embodiments, the frame body 1 includes a front foot group 100, a seat frame group 200, a handlebar group 300 and a rear foot group 400. The front foot group 100 is pivotally connected to the rear foot group 400 to form a first pivot A. The handlebar group 300 is pivotally connected to the rear foot group 400 to form a second pivot B. The seat frame group 200 is installed on the front foot group 100 and the rear foot group 400. The pivot axis of the hook mounting seat 101 and the seat frame group 200 described later is the third pivot C. The pivot axis of the front foot tube joint 11 of the front foot group 100 and the seat frame group 200 is also the third pivot C.

[0070] See also Figure 2 , Figure 5 , Figures 6a to 6d, the folding and closing of the frame body 1 is controlled by the folding mechanism 10. The folding mechanism 10 includes a hook mounting seat 101, a fixing tube 102, a fixing rod 103, a second lock hook 104, a pull ring 105, a frame unlocking member 106 and an elastic reset member 107. Among them, the hook mounting seat 101 is rotatably mounted on the seat frame assembly 200 of the frame body 1. The hook mounting seat 101 includes two, and a hook mounting seat 101 is installed on each side of the width direction of the frame body 1. The two hook mounting seats 101 are fixed together with the fixing tube 102 through a pin. In other words, if the fixing tube 102 rotates, the hook mounting seat 101 will rotate with the fixing tube 102. The fixing rod 103 is fixed to the seat frame assembly 200, and the fixing rod 103 cannot rotate. The fixing rod 103 and the fixing tube 102 are both located on the same side of the third pivot C of the hook mounting seat 101 and the seat frame assembly 200, see Figure 7a and Figure 7b , so that when the fixing tube 102 rotates, the hook fixing seat is driven to rotate in a direction away from the fixing rod 103.

[0071] The two-way lock hook 104 has a first slot 104d, and the hook mounting seat 101 has a second slot 101a. The opening directions of the first slot 104d and the second slot 101a are opposite, so that the first slot 104d and the second slot 101a can cooperate to hold the fixing rod 103. When the first slot 104d and the second slot 101a hold the fixing rod 103 together, the frame body 1 is in a locked state. When the first slot 104d and the second slot 101a both release the fixing rod 103, the frame body 1 is in an unlocked state.

[0072] See also Figures 5 to 6d, the following describes the connection method between the two-way lock hook 104 and the fixed tube 102. The two-way lock hook 104 is provided with a first hole 104a for installing the fixed tube 102 and a second hole 104b connected to the first hole 104a. The second hole 104b is perpendicular to the axial direction of the first hole 104a. The fixed tube 102 passes through the first hole 104a. A locking hole 102b is provided on the wall of the part of the fixed tube 102 located inside the first hole 104a. The locking hole 102b is perpendicular to the center hole 102a of the fixed tube 102. A middle part of the frame unlocking member 106 is located in the second hole 104b, and the first end of the frame unlocking member 106 can extend into the center hole 102a through the locking hole 102b. If the first end of the frame unlocking member 106 extends into the center hole 102a, the frame unlocking member 106 is in a locked state. When in the locked state, the second lock hook 104 and the fixed tube 102 are fixed together. If the first end of the frame unlocking member 106 does not extend into the center hole 102a, the frame unlocking member 106 is in the unlocked state. When in the locked state, the second lock hook 104 can rotate at a certain angle relative to the fixed tube 102. When the rotation angle of the second lock hook 104 relative to the fixed tube 102 does not exceed the limit, the rotation of the second lock hook 104 will not cause the fixed tube 102 to rotate. If the rotation of the second lock hook 104 exceeds the above limit, the rotation of the second lock hook 104 will cause the fixed tube 102 to rotate together, which will be described in detail later.

[0073] Continue to see Figures 5 to 6d , a first annular member 106a protruding toward the outside is provided at a position closer to the first end of the frame unlocking member 106. A second annular member 104c is provided at an end of the second hole 104b away from the first hole 104a protruding toward the inside of the hole. An elastic reset member 107 is sandwiched between the first annular member 106a and the second annular member 104c. The elastic reset member 107 can be specifically a compression spring. The second end of the frame unlocking member 106 is located outside the second hole 104b, and the pull ring 105 is fixed to the second end of the frame unlocking member 106.

[0074] See also Figure 5 ,or Figures 6a to 6d The following describes the detailed process of locking and unlocking the second lock hook 104 and the fixing tube 102; locking and unlocking the second lock hook 104 and the fixing rod 103; and locking and unlocking the hook mounting seat 101 and the fixing rod 103.

[0075] When the pull ring 105 is pulled outward, the pull ring 105 compresses the elastic reset member 107, and the pull ring 105 drives the frame unlocking member 106 to slide along the inner wall of the second hole 104b, so that the first end of the pull ring 105 is disengaged from the locking hole 102b of the fixing tube 102. In this way, the locking between the second lock hook 104 and the fixing tube 102 is released.

[0076] Continue to pull the pull ring 105 upward, the pull ring 105 will drive the pedal unlocking pin 321 and the second lock seat hook to rotate around the fixed tube 102, so that the first slot 104d of the second lock hook 104 leaves the fixed rod 103 to unlock the second lock seat hook and the fixed rod 103.

[0077] The rotation of the second lock hook 104 equivalent to the fixed tube 102 has an angle range. When the second lock hook 104 equivalent to the fixed tube 102 rotates to the limit position (limited by the limit member 6, see Figure 6d ), continue to pull the pull ring 105, which will cause the second lock hook 104 to drive the fixed tube 102 to rotate together. Since the fixed tube 102 and the hook mounting seat 101 are fixedly connected together, the rotation of the fixed tube 102 will drive the hook mounting seat 101 to rotate together. As described above, since the positions of the third pivot C of the hook mounting seat 101 and the seat frame assembly 200 satisfy: the fixed rod 103 and the fixed tube 102 are both located on the same side of the third pivot C of the hook mounting seat 101 and the seat frame assembly 200, so pulling the pull ring 105 upwards will cause the hook mounting seat 101 to rotate upwards, so that the second slot 101a of the hook mounting seat 101 is away from the fixed rod 103. At this point, the locking of the frame body 1 on the first pivot C is released, and by pulling the vehicle retracting wire rope 6, see Figure 2 , the frame body 1 can be folded.

[0078] During the folding process of the frame body 1, the front leg assembly 100, the seat frame assembly 200, the handlebar assembly 300 and the rear leg assembly 400 will rotate at their respective pivot points. The cover 12 is a component disposed between the front leg assembly 100 and the handlebar assembly 300. The cover 12 has two pivot axes, one is a first pivot axis A and the other is a second pivot axis B. Figure 2 The cover 12 is fixed on the rear foot 400 and does not rotate. The handlebar assembly 300 / front foot assembly 100 are rotatably connected to the cover 12 to form a first pivot A and a second pivot B. During the folding process of the frame, the cover 12 does not rotate, and the front foot assembly 100 on the cover 12 rotates around the first pivot A. The following text will introduce how to unlock the pedal assembly 2 and then fold it with the folding of the frame body 1. Before introducing this content, the specific implementation method of the pedal assembly 2 and the posture adjustment mechanism 4 and the connection method between the pedal assembly 2 and the frame body 1 are first introduced.

[0079] See also Figure 8 In some embodiments, the baby stroller frame further includes a posture adjustment mechanism 4, which is disposed between the footrest assembly 2 and the frame body 1, and the posture adjustment mechanism 4 is configured to adjust the posture of the footrest assembly 2 relative to the frame body 1 in the unfolded state.

[0080] The following introduces the respective implementation methods and connection relationships of the pedal assembly 2, the locking mechanism 3, and the posture adjustment mechanism 4.

[0081] See also Figure 8 The pedal assembly 2 is not a footboard on the front foot group 100, but a separate rod for infants and young children to step on. The pedal assembly 2 includes a transverse tube 21, a wrench fixing seat 22, a wrench 23 and a bending tube 24. The bending tube 24 is roughly L-shaped, and two L-shaped tubes and a transverse tube 21 are used to form a square structure to facilitate infants and young children to step on. The transverse tube 21 is a straight tube, and the transverse tube 21 is a rotatable component that can be rotated after being unlocked. The unlocking operation of the pedal assembly 2 is realized by two groups of mechanisms, one group is the posture adjustment mechanism 4, and the posture adjustment mechanism 4 can unlock the pedal assembly 2 when the frame body 1 is in the unfolded and locked state, and then manually lift and lower the bending tube 24 to achieve the posture adjustment of the pedal assembly 2. Another group of mechanisms for unlocking the pedal assembly 2 is the unlocking mechanism 32 mentioned above. The unlocking mechanism 32 can unlock the pedal assembly 2 after the frame body 1 is unlocked, and then under the action of the tension spring, the pedal assembly 2 is retracted synchronously with the retraction of the frame body 1. The tension spring is a driving component 5 disposed between the cross tube 21 and the frame body 1. These contents will be described in detail later.

[0082] See also Figure 9a , Fig.15 and Fig.16 In some embodiments, the driving member 43 of the posture adjustment mechanism 4 is fixed on the pedal assembly 2, so that the posture of the pedal assembly 2, that is, the angle relative to the front foot group 100, can be easily adjusted. In order to facilitate the installation of the driving member 43, as described above, the pedal assembly 2 also includes a wrench fixing seat 22 and a wrench 23. The wrench fixing seat 22 is fixedly connected to both bending tubes 24, and the wrench fixing seat 22 is located between the two bending tubes 24. The wrench 23 is rotatably mounted on the wrench fixing seat 22, and the driving member 43 is connected to the wrench 23. The driving member 43 described above is driven to move by the rotation of the wrench 23 relative to the wrench fixing seat 22. One end of the bending tube 24 is fixedly connected to the second mounting hole 412 of the pedal joint 41, and the other end of the bending tube 24 is fixedly connected to the wrench fixing seat 22. The driving member 43 is specifically a rope, which is pressed on the wrench fixing seat 22 by a pressing sleeve 45. The pressing sleeve 45 is fixedly connected with the split pin 46 and the wrench fixing seat 22. The end of the rope is fixed with the handle 23.

[0083] In other embodiments, a pedal joint 41 described below is installed at one end of each bending tube 24 away from the wrench fixing seat 22 .

[0084] The specific implementation of the locking mechanism 31 is first introduced below.

[0085] See also Figures 9a to 12The frame body 1 includes a front foot tube joint 11. The locking mechanism 31 includes a first meshing tooth 311 and a locking gear 312. The first meshing tooth 311 is provided at the front foot tube joint 11, and the locking gear 312 is provided with a second meshing tooth 312a. When the first meshing tooth 311 and the second meshing tooth 312a are meshed with each other, the pedal assembly 2 is in a locked state relative to the frame body 1; when the first meshing tooth 311 and the second meshing tooth 312a are disengaged, the pedal assembly 2 is in an unlocked state relative to the frame body 1. Moreover, the locked state between the pedal assembly 2 and the frame body 1 is unlocked as the frame body 1 is unlocked.

[0086] The above technical solution makes the first meshing tooth 311 and the second meshing tooth 312a move away from each other in the axial direction to break the meshing relationship; and makes the first meshing tooth 311 and the second meshing tooth 312a move closer to each other in the axial direction to form the meshing relationship.

[0087] See also Fig.11 In order to make it easier for the second meshing tooth 312a to disengage from the first meshing tooth 311 , in some embodiments, a guide slope 312b is provided on the end surface of the second meshing tooth 312a facing the first meshing tooth 311 .

[0088] The specific implementation of the unlocking mechanism 32 is described below.

[0089] See also Figures 9a to 12 The frame body 1 further includes a cover 12, which is disposed on a side of the front leg tube joint 11 away from the locking mechanism 3. Figure 9a and Figure 9b The unlocking mechanism 32 includes a pedal unlocking pin 321 and an unlocking inclined surface 322. The pedal unlocking pin 321 is arranged on the front foot tube joint 11 so as to be movable along its own axial direction, and the pedal unlocking pin 321 penetrates and extends out of the front foot tube joint 11. The cover body 12 is provided with an unlocking inclined surface 322. The cover body 12 is constructed such that the front foot group 100 rotates relative to the cover body 12 so that the unlocking inclined surface 322 abuts against the pedal unlocking pin 321, so that the pedal unlocking pin 321 moves along its own axial direction. In the process of the pedal unlocking pin 321 moving linearly relative to the cover body 12, the pedal unlocking pin 321 gradually pushes to the end surface of the second meshing tooth 312a facing the first meshing tooth 311. In this way, the pedal unlocking pin 321 can push the second meshing tooth 312a in a direction away from the first meshing tooth 311, so that the first meshing tooth 311 and the second meshing tooth 312a are disengaged.

[0090] See also Figure 9a to Figure 1 4. The specific implementation method of the posture adjustment mechanism 4 is introduced below.

[0091] The posture adjustment mechanism 4 is disposed on a side of the locking gear 312 away from the front leg tube joint 11 ; the adjustment mechanism is configured to make the second meshing teeth 312 a of the locking gear 312 disengage from the first meshing teeth 311 .

[0092] The posture adjustment mechanism 4 can also make the first meshing tooth 311 and the second meshing tooth 312a disengage / form a meshing relationship. After the posture adjustment mechanism 4 makes the first meshing tooth 311 and the second meshing tooth 312a disengage, the pedal assembly 2 can rotate relative to the frame body 1 to adjust the posture of the pedal assembly 2, that is, the angle of the pedal assembly 2 relative to the frame body 1.

[0093] The pedal joint 41 described above is a part of the posture adjustment mechanism 4. In addition to the pedal joint 41, the posture adjustment mechanism 4 also includes a sliding sleeve 42 and a driving member 43. Fig.10 , the pedal joint 41 has a first mounting hole 411. Fig.14a and Fig.14b The sliding sleeve 42 has a through hole 424, and the inner wall of the sliding sleeve 42 is provided with a top inclined surface 421. Fig.11 The end of the locking gear 312 away from the second meshing tooth 312a is provided with an arc surface 312c protruding toward the outside; the abutting inclined surface 421 is located between the arc surface 312c and the second meshing tooth 312a, and the arc surface 312c and the abutting inclined surface 421 abut each other; the sliding sleeve 42 is rotatably arranged inside the first mounting hole 411. The driving member 43 is connected to the sliding sleeve 42 so that the sliding sleeve 42 rotates relative to the pedal joint 41. The rotation of the sliding sleeve 42 relative to the pedal joint 41 causes the abutting inclined surface 421 to move axially with the arc surface 312c, so that the first meshing tooth 311 and the second meshing tooth 312a are disengaged.

[0094] See also Figure 9a and Fig.16 In some embodiments, the driving member 43 includes a pull rope, and a groove 422 is circumferentially provided on the outer surface of the sleeve 42, one section of the pull rope is located in the groove 422, and one end of the pull rope is fixed to the sleeve 42, and the other end of the pull rope serves as a force-applying end.

[0095] 14 , in some embodiments, the sliding sleeve 42 is provided with an avoidance groove 423 , which matches the shape of the arc surface 312 c to avoid interference between the abutting inclined surface 421 and the arc surface 312 c when the arc surface 312 c is installed on the sliding sleeve 42 .

[0096] See also Figure 9a As shown in FIG. 14 , in some other embodiments, the posture adjustment mechanism 4 further includes a return spring 44 disposed between the sliding sleeve 42 and the second meshing tooth 312 a , and the return spring 44 is configured to return the sliding sleeve 42 to its original position.

[0097] From the above description, it can be seen that the pedal assembly 2 mainly has the following actions: adjusting its own posture and folding and closing along with the folding and closing of the frame body 1.

[0098] Before these two actions, the lock between the pedal assembly 2 and the frame body 1 needs to be unlocked. The unlocking is finally achieved by the second meshing tooth 312a leaving the first meshing tooth 311. The difference is that: in the process of adjusting the posture itself, the second meshing tooth 312a is driven by the driving member 43 to leave the first meshing tooth 311. When the pedal assembly 2 is folded with the folding of the frame body 1, the unlocking inclined surface 121 on the cover body 12 pushes the pedal unlocking pin 321 to press against the second meshing tooth 312a, so that the second meshing tooth 312a and the first meshing tooth 311 are separated.

[0099] Specifically, in the process of adjusting the posture of the vehicle, the process of the second meshing teeth 312a and the first meshing teeth 311 being separated is as follows: when the wrench 23 is pulled, the wrench 23 rotates relative to the wrench fixing seat 22, and the rope (as the driving member 43) fixedly connected to the wrench 23 is pulled. Since the other end of the rope is fixed to the sliding sleeve 42. After the rope is pulled, the sliding sleeve 42 will be driven to rotate relative to the pedal joint 41. During the rotation of the sliding sleeve 42, since the sliding sleeve 42 and the locking gear 312 cooperate through the top inclined surface 421 and the arc surface 312c, the top inclined surface 421 of the sliding sleeve 42 will push the arc surface 312c to move away from the first meshing teeth 311, thereby disengaging the first meshing teeth 311 and the second meshing teeth 312a, thereby achieving the unlocking of the pedal assembly 2 relative to the frame body 1. After unlocking, the angle of the pedal assembly 2 relative to the frame body 1 can be manually adjusted up and down to achieve the posture adjustment of the pedal assembly 2.

[0100] When the pedal assembly 2 is folded as the frame body 1 is folded, the second meshing teeth 312a and the first meshing teeth 311 are separated as follows: after the third pivot C is unlocked, the cover body 12 rotates as the frame body 1 is folded. When the front foot assembly 100 connected to the cover body 12 rotates, the unlocking inclined surface 121 on the cover body 12 pushes the pedal unlocking pin 321 to abut against the second meshing teeth 312a, so that the second meshing teeth 312a and the first meshing teeth 311 are separated.

[0101] See also Figure 17a to Figure 17d The following describes the folding process of the footrest assembly 2 as the frame assembly is folded.

[0102] like Fig.17aAs shown, the original state is that the frame body 1 is in the unfolded state, the frame unlocking member 106 penetrates into the first hole 104a under the independent action of the elastic reset member 107, the second lock hook 104 is locked, the second lock hook 104 is engaged on the fixing rod 103, the frame unlocking member 106 is locked, and the frame unlocking member 106 is engaged on the other side of the fixing rod 103, thereby keeping the frame body 1 in the unfolded state.

[0103] When the frame body 1 needs to be folded, refer to Figures 6a to 7b , by pulling the pull ring 105, the frame unlocking member 106 overcomes the force of the elastic reset member 107 under the action of the pull ring 105 and disengages from the first hole 104a, and the second lock hook 104 is unlocked. At this time, the pull ring 105 is lifted upward to drive the second lock hook 104 to rotate, and the second lock hook 104 is separated from the fixed rod 103, and the frame unlocking member 106 is unlocked. At this time, the pull ring 105 is continued to be lifted upward, and then the frame unlocking member 106 is driven to rotate, and the frame unlocking member 106 is separated from the fixed rod 103, and the frame unlocking member 106 is in an unlocked state. After the frame body 1 is folded, it can stand, occupying a small space and having high folding stability.

[0104] The process of rotating and folding the frame body 1 around the third pivot C is as follows: the unlocking inclined surface 121 on the cover body 12 pushes the pedal unlocking pin 321 introduced above. The pedal unlocking pin 321 pushes the second engagement tooth 312a to move to unlock the pedal assembly 4. Then the pedal assembly 4 is fixed to the driving component 5 on the seat frame tube of the seat frame assembly 200, specifically, the tension spring pulls to rotate and fold the pedal assembly 4 around the pivot C.

[0105] Other embodiments of the present invention provide a baby stroller, comprising a baby stroller frame provided by any technical solution of the present invention.

[0106] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A baby stroller frame, characterized in that: include: A frame body (1) is configured to have a folded state and an unfolded state; A pedal assembly (2) rotatably mounted on the frame body (1); and The locking mechanism (3) comprises a locking mechanism (31) and an unlocking mechanism (32); the locking mechanism (31) and the unlocking mechanism (32) are arranged between the frame body (1) and the pedal assembly (2); the locking mechanism (31) is configured to place the pedal assembly (2) in a locked state relative to the frame body (1); the unlocking mechanism (32) is configured to place the pedal assembly (2) in an unlocked state relative to the frame body (1), and the locked state between the pedal assembly (2) and the frame body (1) is unlocked as the frame body (1) is unlocked; The frame body (1) further comprises a front leg tube joint (11); The locking mechanism (31) comprises a first meshing tooth (311) and a locking gear (312); the first meshing tooth (311) is arranged on the front leg tube joint (11), and the locking gear (312) is provided with a second meshing tooth (312a); When the first meshing teeth (311) and the second meshing teeth (312a) are meshed with each other, the pedal assembly (2) is in a locked state relative to the frame body (1); when the first meshing teeth (311) and the second meshing teeth (312a) are disengaged, the pedal assembly (2) is in an unlocked state relative to the frame body (1); The frame body (1) further comprises a cover body (12), wherein the cover body (12) is arranged on a side of the front leg tube joint (11) away from the locking mechanism (3); The unlocking mechanism (32) comprises a pedal unlocking pin (321) and an unlocking inclined surface (322); the pedal unlocking pin (321) is arranged on the front foot tube joint (11) so as to be movable along its own axial direction, and the pedal unlocking pin (321) penetrates through and extends out of the front foot tube joint (11); the cover body (12) is provided with the unlocking inclined surface (322); The cover body (12) is constructed such that: the unlocking inclined surface (322) abuts against the pedal unlocking pin (321), so that the pedal unlocking pin (321) moves along its own axial direction to push away the second meshing tooth (312a), so that the first meshing tooth (311) and the second meshing tooth (312a) are disengaged; The end surface of the second meshing tooth (312a) facing the first meshing tooth (311) is provided with a guiding inclined surface (312b).

2. The baby carriage frame according to claim 1, characterized in that: Also includes: A posture adjustment mechanism (4) is arranged between the footrest assembly (2) and the frame body (1), and the posture adjustment mechanism (4) is configured to adjust the posture of the footrest assembly (2) relative to the frame body (1) in an unfolded state.

3. The baby carriage frame according to claim 2, characterized in that: The posture adjustment mechanism (4) is arranged on a side of the locking gear (312) away from the front leg tube joint (11); the adjustment mechanism is constructed so that the second meshing tooth (312a) of the locking gear (312) is disengaged from the first meshing tooth (311).

4. The baby carriage frame according to claim 3, characterized in that: The posture adjustment mechanism (4) comprises: A pedal joint (41) having a first mounting hole (411); The sliding sleeve (42) has a through hole extending therethrough, and the inner wall of the sliding sleeve (42) is provided with an abutting inclined surface (421) protruding inwardly; the end of the locking gear (312) away from the second meshing tooth (312a) is provided with an arc surface (312c) protruding outwardly; the abutting inclined surface (421) is located between the arc surface (312c) and the second meshing tooth (312a), and the arc surface (312c) and the abutting inclined surface (421) are abutted together; the sliding sleeve (42) is rotatably arranged inside the first mounting hole (411); and A driving member (43) connected to the sliding sleeve (42) so as to enable the sliding sleeve (42) to rotate relative to the pedal joint (41); The rotation of the sliding sleeve (42) relative to the pedal joint (41) causes the abutting inclined surface (421) to move axially with the arc surface (312c), so that the first meshing tooth (311) and the second meshing tooth (312a) are disengaged.

5. The baby carriage frame according to claim 4, characterized in that: The driving member (43) comprises a pull rope, the outer surface of the sliding sleeve (42) is provided with a groove (422) along the circumferential direction, one section of the pull rope is located in the groove (422), one end of the pull rope is fixed to the sliding sleeve (42), and the other end of the pull rope serves as a force-applying end.

6. The baby carriage frame according to claim 4, characterized in that: The sliding sleeve (42) is provided with an avoidance groove (423), and the avoidance groove (423) matches the shape of the arc surface (312c) so as to avoid interference between the abutting inclined surface (421) and the arc surface (312c) during the process of installing the arc surface (312c) to the sliding sleeve (42).

7. The baby carriage frame according to claim 4, characterized in that: The posture adjustment mechanism (4) further comprises: A return spring (44) is arranged between the sliding sleeve (42) and the second meshing tooth (312a), and the return spring (44) is configured to return the sliding sleeve (42).

8. The baby carriage frame according to claim 4, characterized in that: The pedal assembly (2) comprises: A transverse tube (21) is inserted into a first mounting hole (411) of the pedal joint (41), and the pedal joint (41) also has a second mounting hole (412) in communication with the first mounting hole (411); Wrench fixing seat (22); The wrench (23) is rotatably mounted on the wrench fixing seat (22), the driving member (43) is connected to the wrench (23), and the driving member (43) is driven to move by the rotation of the wrench (23) relative to the wrench fixing seat (22); and A bending tube (24), one end of the bending tube (24) being fixedly connected to the second mounting hole (412) of the pedal joint (41), and the other end of the bending tube (24) being fixedly connected to the wrench fixing seat (22).

9. The baby carriage frame according to claim 8, characterized in that: A bending tube (24) is installed on each side of the spanner fixing seat (22) in the length direction, and a pedal joint (41) is installed on one end of each bending tube (24) away from the spanner fixing seat (22).

10. The baby stroller frame according to claim 1, characterized in that: Also includes: A driving component (5) is disposed between the frame body (1) and the pedal assembly (2), and the driving component (5) is configured to drive the pedal assembly (2) to be folded along with the frame body (1) when the pedal assembly (2) is in an unlocked state.

11. The baby carriage frame according to claim 10, characterized in that: The driving component (5) comprises a tension spring, one end of which is fixedly connected to the frame body (1), and the other end of which is fixedly connected to the pedal assembly (2).

12. A baby stroller, characterized in that: The invention comprises a baby carriage frame as claimed in any one of claims 1 to 11.

Images