Baby carriage

Abstract

The baby carriage comprises a front frame, a main frame and a rear frame, the lower end of the front frame is connected with a front wheel, the main frame is connected with the front frame and the rear frame, the rear frame further comprises a push handle set, a locking mechanism and a driving mechanism, the lower portion of the push handle set is rotationally connected with the main frame, the lower end of the push handle set is connected with a rear wheel, and the rear wheel is connected with the locking mechanism. The push handle group has an unfolding position and a folding position; the locking mechanism is provided with a locking position and an unlocking position, the push handle set is locked to the unfolding position at the locking position, and locking of the push handle set is relieved at the unlocking position. The driving mechanism is arranged on the upper portion of the push handle set and is in transmission connection with the locking mechanism, and the driving mechanism is used for driving the locking mechanism to unlock the push handle set. According to the baby carriage, the rear frame can be folded relative to the main frame, the occupied space of the folded baby carriage is reduced, and the baby carriage is convenient to carry and store.

Description

Technical Field

[0001] The present invention relates to the technical field of children's products, in particular to a baby carriage. Background Art

[0002] A baby stroller is a tool vehicle specially designed for children, mainly used for travel and entertainment. The structure of a baby stroller mainly includes a handlebar, a front frame, front wheels, a main frame, a rear frame and rear wheels. In the related art, baby strollers include non-foldable baby strollers and foldable baby strollers. When not in use, the foldable baby stroller can be folded to reduce storage space and is convenient to carry. Existing foldable baby strollers still occupy a large space after being folded, which is not convenient to carry and store. Summary of the invention

[0003] To this end, an object of the present invention is to provide a baby carriage, wherein the rear frame can be folded relative to the main frame, thereby reducing the occupied space of the baby carriage after being folded, and facilitating carrying and storage.

[0004] According to an embodiment of the present invention, the baby carriage comprises a front frame, a main frame and a rear frame, the lower end of the front frame is connected to a front wheel, the main frame connects the front frame and the rear frame, and the rear frame further comprises:

[0005] A push handle assembly, the lower part of which is rotatably connected to the main frame, the lower end of which is connected to the rear wheel, and the push handle assembly has an unfolded position and a folded position;

[0006] A locking mechanism, wherein the locking mechanism has a locking position and an unlocking position, wherein the push handle assembly is locked in the unfolded position at the locking position and the push handle assembly is unlocked at the unlocking position;

[0007] The driving mechanism is arranged on the upper part of the push handle assembly and is transmission-connected to the locking mechanism. The driving mechanism is used to drive the locking mechanism to release the lock on the push handle assembly.

[0008] According to the baby stroller of the embodiment of the present invention, the rear frame can be folded relative to the main frame, so as to reduce the occupied space of the baby stroller after being folded, and facilitate carrying and storage.

[0009] In addition, the baby carriage according to the above embodiment of the present invention may also have the following additional technical features:

[0010] In some embodiments, the rear frame further includes a flexible pull rope, and the flexible pull rope is respectively connected to the locking mechanism and the driving mechanism.

[0011] In some embodiments, the flexible pull cord is disposed in the push handle assembly.

[0012] In some embodiments, a mounting seat is provided at the rear end of the main frame, the handlebar assembly is rotatably connected to the mounting seat, the mounting seat is provided with a positioning hole, the handlebar assembly is provided with a mounting groove, an opening is provided at the end of the mounting groove, the locking mechanism is provided in the mounting groove and is movable along the mounting groove, and in the locked position the locking mechanism extends out of the opening and passes through the positioning hole.

[0013] In some embodiments, the mounting base includes a positioning plate, which is parallel to the rotation center axis of the push handle group. The push handle group includes a rotating part, and the circumference of the rotating part includes a first surface and a second surface. The first surface is set as an arc surface around the rotation center axis, and the second surface is connected to the first surface and is set as a plane extending along the tangent direction of the first surface. In the unfolded position, the second surface is opposite to the positioning plate, and in the folded position, the first surface is opposite to the positioning plate.

[0014] In some embodiments, the mounting base further includes a first side plate and a second side plate, the first side plate and the second side plate are connected to the positioning plate and are relatively distributed, and the end of the push handle group is rotatably connected between the first side plate and the second side plate.

[0015] In some embodiments, a slope is provided at the end of the locking mechanism, and the slope is opposite to the mounting seat in the folded position, so that when the handle assembly moves from the folded position to the unfolded position, the mounting seat abuts against the slope to drive the locking mechanism to move to the unlocked position.

[0016] In some embodiments, the rotation center axis of the push handle assembly extends in the left-right direction.

[0017] In some embodiments, the baby carriage further comprises an elastic member having an elastic force for driving the locking mechanism toward the locking position.

[0018] In some embodiments, the push handle assembly includes a first tube portion, which is rotatably connected to the main frame, and the locking mechanism is arranged on the first tube portion; the push handle assembly also includes a second tube portion, which is connected to the first tube portion and is perpendicular to the first tube portion, and the rear wheels are connected to both ends of the second tube portion.

[0019] In some embodiments, the push handle group also includes a third tube portion, a fourth tube portion and a fifth tube portion. In the expanded position, the third tube portion and the fourth tube portion extend in the up-down direction, and the lower ends are connected to the first tube portion. The fifth tube portion extends in the left-right direction and both ends are respectively connected to the upper end of the third tube portion and the upper end of the fourth tube portion. The driving mechanism is arranged on the third tube portion, the fourth tube portion or the fifth tube portion.

[0020] In some embodiments, the driving mechanism includes: a main body, which is connected to the push handle group; a sliding part, which is movably provided on the main body along the extension direction of the push handle group; and a button part, which is movably connected to the main body and drives the sliding part to move, wherein the sliding part is transmission-connected to the locking mechanism, and the button part has a first position and a second position, and drives the locking mechanism to move to the unlocking position in the first position, and releases the driving force on the locking mechanism in the second position.

[0021] In some embodiments, the main body is provided with a first slide groove and a second slide groove distributed along a first direction, the first slide groove and the second slide groove extend along the first direction, the button portion is movably connected to the main body along the second direction, the button portion is provided with a third slide groove and a fourth slide groove distributed along the first direction, the third slide groove and the fourth slide groove are inclined toward each other in the second direction, the first direction is perpendicular to the second direction, the sliding portion includes a first shaft pin and a second shaft pin, the first shaft pin is inserted into the first slide groove and the third slide groove, the second shaft pin is inserted into the second slide groove and the fourth slide groove, the first shaft pin and / or the second shaft pin are transmission connected to the locking mechanism.

[0022] In some embodiments, the driving mechanism further includes: a sliding portion, the sliding portion is slidably disposed on the main body portion along the first direction, the sliding portion includes a positioning block, wherein the button portion is provided with a clearance groove, the positioning block extends into the clearance groove in the first position, and the positioning block stops the button portion in the second position and limits the button portion from moving toward the first position. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 2 is a three-dimensional structural diagram of a baby carriage in some embodiments of the present invention, wherein the push handle assembly is located in an unfolded position.

[0024] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the area A in the middle circle.

[0025] Figure 3 2 is a three-dimensional structural diagram of a baby carriage in some embodiments of the present invention, wherein the handle assembly is located in a folded position.

[0026] Figure 4 yes Figure 3 A partial enlarged schematic diagram of the area in the middle circle B.

[0027] Figure 5 1 is a structural diagram of a main frame of a baby carriage in some embodiments of the present invention.

[0028] Figure 61 is a structural diagram of a rotating portion and a locking mechanism of a baby carriage in some embodiments of the present invention.

[0029] Figure 7 2 is a three-dimensional structural diagram of a baby carriage in some embodiments of the present invention, wherein the rear wheels are not shown.

[0030] Figure 8 Schematic diagram of an exploded view of a driving mechanism of a baby carriage in some embodiments of the present invention.

[0031] Figure numerals: baby carriage 100, front frame 10, main frame 20, rear frame 30, rear wheel 40, handlebar group 31, mounting groove 311, rotating portion 312, first surface 3121, second surface 3122, first tube portion 313, second tube portion 314, third tube portion 315, fourth tube portion 316, fifth tube portion 317, locking mechanism 32, driving mechanism 33, main body 331, first slide groove 3311, second slide groove 3312, sliding portion 332, first shaft pin 3321, second shaft pin 3322, positioning block 3323, button portion 333, third slide groove 3331, fourth slide groove 3332, give way groove 3333, mounting seat 21, positioning hole 211, positioning plate 212, first side plate 213, second side plate 214. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] According to the baby carriage 100 of the embodiment of the present invention, the baby carriage 100 includes a front frame 10, a main frame 20 and a rear frame 30, the lower end of the front frame 10 is connected to the front wheel, the main frame 20 connects the front frame 10 and the rear frame 30, and the rear frame 30 also includes a handle group 31, a locking mechanism 32 and a driving mechanism 33.

[0034] Combination Figure 1, wherein the lower part of the handlebar group 31 is rotatably connected to the main frame 20, and the lower end of the handlebar group 31 is connected to the rear wheel 40. The handlebar group 31 has an unfolded position and a folded position, and the rear wheel 40 moves to the unfolded position and the folded position with the handlebar group 31. When the handlebar group 31 is in the unfolded position, the handlebar group 31 is pushed to move the baby carriage 100 in the direction of travel; when the handlebar group 31 is in the folded position, the handlebar group 31 and the rear wheel 40 are brought closer to the main frame 20. The locking mechanism 32 has a locking position and an unlocking position, and the locking mechanism 32 can be provided at the connection between the handlebar group 31 and the main frame 20, or at other positions of the handlebar group 31 and the main frame 20. In the locking position, the handlebar group 31 is locked in the unfolded position, and in the unlocking position, the handlebar group 31 is unlocked so that the handlebar group can move to the folded position. The driving mechanism 33 is disposed on the upper portion of the push handle assembly 31 and is transmission-connected to the locking mechanism 32 . The driving mechanism 33 is used to drive the locking mechanism 32 to unlock the push handle assembly 31 .

[0035] Specifically, when in the unfolded position, the locking mechanism 32 is in the locked position. The locking mechanism 32 can be arranged to pass through the handle group 31 and the main frame 20. The locking mechanism 32 locks the handle group 31 in the unfolded position. The handle group 31 is fixed relative to the main frame 20, and the handle group 31 cannot rotate relative to the main frame 20. By pushing the handle group 31, the stroller 100 can move in a specified direction; when the stroller 100 is rotated from the unfolded position to the folded position, the locking mechanism 32 can be controlled to move from the locked position to the unlocked position, so as to release the lock of the handle group 31 by the locking mechanism 32, and the handle group 31 can be rotated relative to the main frame 20. The handle group 31 and the rear wheel 40 are rotated from the unfolded position to the folded position and retracted relative to the main frame 20, thereby realizing the folding of the rear frame 30 relative to the main frame 20.

[0036] According to the baby stroller 100 of the embodiment of the present invention, the rear frame 30 can be folded relative to the main frame 20, which reduces the occupied space of the baby stroller 100 after folding, and is convenient for carrying and storage. In addition, the driving mechanism 33 is arranged on the upper part of the push handle group 31, and the push handle group 31 can be unlocked relatively easily, so as to simplify the folding operation of the baby stroller 100, and the user can complete the driving of the locking mechanism 32 by the driving structure 33 without bending over.

[0037] In some embodiments, the rear frame 30 further includes a flexible pull rope, which is respectively connected to the locking mechanism 32 and the driving structure 33. The driving mechanism 33 pulls the flexible pull rope to pull the locking mechanism 32 to move from the locked position to the unlocked position.

[0038] Specifically, one end of the flexible pull rope is connected to the driving mechanism 33, and the other end of the flexible pull rope is connected to the locking mechanism 32. When the driving mechanism 33 is pressed, the driving mechanism 33 pulls one end of the flexible pull rope, and the force of the driving mechanism 33 pulling the flexible pull rope is transmitted along the flexible pull rope to the other end of the flexible pull rope. The other end of the flexible pull rope pulls the locking mechanism 32. Under the pulling of the other end of the flexible pull rope, the locking mechanism 32 moves from the locked position to the unlocked position, thereby unlocking the push handle group 31.

[0039] Optionally, the flexible pull rope can be a steel wire pull rope, which has high bearing capacity and wear resistance and long service life, reducing the probability of the flexible pull rope breaking when subjected to tension; one end of the flexible pull rope can be a hole end, the driving mechanism 33 is provided with a connecting column, the hole end of the flexible pull rope is sleeved on the connecting column, and the other end of the flexible pull rope can be a cylindrical end, the locking mechanism 32 is provided with a groove body, and the cylindrical end can be clamped in the groove body.

[0040] In some embodiments, the flexible pull cord is disposed in the push handle assembly 31 to prevent the flexible pull cord from being exposed to the outside and from being worn or broken due to external factors, which is beneficial to protecting the flexible pull cord and extending the service life of the flexible pull cord. Optionally, the push handle assembly 31 is a through tube, and the flexible pull cord is disposed in the through tube.

[0041] Combination Figure 1 , Figure 6 and Figure 7 In some embodiments, a mounting seat 21 is provided at the rear end of the main frame 20, and the handlebar group 31 is rotatably connected to the mounting seat 21. The mounting seat 21 is provided with a positioning hole 211, and the handlebar group 31 is provided with a mounting groove 311. An opening is provided at the end of the mounting groove 311. The locking mechanism 32 is provided in the mounting groove 311 and is movable along the mounting groove 311. In the locked position, the locking mechanism 32 extends out of the opening and passes through the positioning hole 211. The locking mechanism 32 locks the handlebar group 31 in the expanded position, and the handlebar group 31 is fixed relative to the mounting seat 21.

[0042] Specifically, in the deployed position, the mounting groove 311 extends along the front-to-back direction, the main frame 20 extends along the front-to-back direction, the mounting seat 21 is fixedly connected to the main frame 20, and the end of the push handle group 31 is passed through the mounting seat 21. When the locking mechanism 32 is in the locked position, the mounting groove 311 is opposite to the positioning hole 211, and the opening is connected to the positioning hole 211. The locking mechanism 32 is simultaneously passed through the mounting groove 311 and the mounting seat 21. The inner side of the mounting seat 21 abuts against the end of the push handle group 31, restricting the push handle group 31 from moving left and right relative to the mounting seat 21. At this time, the push handle group 31 is fixed relative to the mounting seat 21, and the push handle group 31 cannot rotate around the mounting seat 21, and the push handle group 31 is locked in the deployed position.

[0043] In some embodiments, the mounting seat 21 includes a positioning plate 212, the positioning plate 212 is parallel to the rotation center axis of the push handle assembly 31, the push handle assembly 31 includes a rotating portion 312, the circumference of the rotating portion 312 includes a first surface 3121 and a second surface 3122, the first surface 3121 is set as an arc surface around the rotation center axis, the second surface 3122 is connected to the first surface 3121, and is set as a plane extending along the tangent direction of the first surface 3121, the second surface 3122 is opposite to the positioning plate 212 in the unfolded position, and the first surface 3121 is opposite to the positioning plate 212 in the folded position. The first surface 3121 is set as an arc surface to reduce the wear of the rotating portion 312 when rotating relative to the mounting seat 21, and to increase the service life of the rotating portion 312; the second surface 3122 is set as a plane to further limit the push handle assembly 31 from rotating downward in the unfolded position, thereby ensuring the stability of the push handle assembly 31. The positioning hole 211 is provided on the positioning plate 212, and the opening is provided at the connection between the first surface 3121 and the second surface 3122, and the connection is close to the positioning plate 212. In the locked position, the locking mechanism 32 can penetrate the positioning plate 212 and the connection between the first surface 3121 and the second surface 3122 to lock the push handle group 31 in the unfolded position; in the unlocked position, the locking mechanism 32 is located inside the rotating part 312 to release the lock on the push handle group 31.

[0044] Specifically, the positioning plate 212 is also a plane extending tangentially along the first surface 3121. In the expanded position, the second surface 3122 contacts a portion of the positioning plate 212, the first surface 3121 has no contact with the positioning plate 212, the positioning hole 211 is connected to the opening, and the locking mechanism 32 is located in the locked position and is penetrated through the connection between the positioning plate 212 and the first surface 3121 and the second surface 3122. The locking mechanism 32 locks the handlebar assembly 31 in the expanded position, the rotating portion 312 cannot rotate relative to the mounting seat 21, and the handlebar assembly 31 is fixed relative to the main frame 20; when the locking mechanism 32 is unlocked, the driving mechanism 33 drives the locking mechanism 32 to rotate through the fixed position. The locking mechanism 32 is controlled to move from the locked position to the unlocked position at the connection between the positioning plate 212 and the first surface 3121 and the second surface 3122. The unlocked position is located inside the rotating portion 312, and the push handle group 31 can rotate relative to the mounting seat 21 to release the lock of the push handle group 31 in the unfolded position; in the folded position, a portion of the first surface 3121 abuts against the positioning plate 212, and the positioning plate 212 is tangent to the first surface 3121, and the second surface 3122 has no contact with the positioning plate 212, the positioning hole 211 and the opening are far away from each other and not connected, and the locking mechanism 32 is reset to the locked position and extends out of the opening at the end of the mounting slot 311, as shown in FIG. Figure 4 shown.

[0045] In some embodiments, the positioning seat also includes a first side plate 213 and a second side plate 214, which are connected to the positioning plate 212 and are relatively distributed. The end of the push handle group 31 is rotatably connected between the first side plate 213 and the second side plate 214. The positioning plate 212, the first side plate 213 and the second side plate 214 jointly limit the rotating part 312 to move only in the up and down directions but not in the left and right directions.

[0046] Specifically, the first side plate 213 and the second side plate 214 are fixedly connected to both sides of the positioning plate 212, the first side plate 213 and the second side plate 214 extend in the front-back direction, the rotating part 312 is located between the first side plate 213 and the second side plate 214, and the first side plate 213 and the second side plate 214 restrict the rotating part 312 from moving in the left-right direction. The first side plate 213 is provided with a first mounting hole, the second side plate 214 is provided with a second mounting hole, the rotating part 312 is provided with a third mounting hole, the locking mechanism 32 is provided with a first slot, the first mounting hole is opposite to the second mounting hole, the third mounting hole is respectively opposite to the first mounting hole and the second mounting hole, and a part of the first slot is opposite to the third mounting hole. The baby carriage 100 includes a first rotating shaft, the first rotating shaft is penetrated by the first mounting hole, the second mounting hole, the third mounting hole and the first slot, and the rotating part 312 is rotatably rotated around the first rotating shaft to the unfolded position or the folded position, so as to realize the unfolding and folding of the rear frame 30 relative to the main frame 20.

[0047] Optionally, the first rotating shaft may be a cylindrical pin, which has a simple structure, high reliability, long service life, and low processing cost, thereby reducing the production cost of the baby carriage 100.

[0048] In some embodiments, a slope is provided at the end of the locking mechanism 32, which is opposite to the mounting seat 21 in the folded position, so that the mounting seat 21 abuts against the slope when the handle assembly 31 moves from the folded position to the unfolded position, thereby driving the locking mechanism 32 to move to the unlocked position.

[0049] Combination Figure 2 and Figure 4For example, the locking mechanism 32 is disposed in the mounting groove 311. The locking mechanism 32 has a first end and a second end. The first end is close to the opening of the mounting groove 311. The inclined surface is disposed at the first end, and the inclined surface is inclined from the first end to the second end along the direction in which the push handle group 31 is unfolded. When the push handle group 31 is in the folded position, the locking mechanism 32 is reset to the locked position, and the inclined surface extends out of the mounting groove 311; when the push handle group 31 moves from the folded position to the unfolded position, the end of the push handle group 31 rotates around the mounting seat 21, and during the rotation process, the inclined surface abuts against the inner side of the mounting seat 21 and moves to the unlocked position; when the push handle group 31 moves to the unfolded position, the inclined surface penetrates the mounting groove 311 and the positioning hole 211, and the locking mechanism 32 is reset to the locked position. The inclined surface is provided to reduce the friction when the locking mechanism 32 rotates relative to the mounting seat 21, reduce the resistance of the locking mechanism 32 rotating to the locked position, and guide the locking mechanism 32 to rotate to the locked position.

[0050] In some embodiments, the rotation center axis of the push handle group 31 extends in the left-right direction, limiting the push handle group 31 to rotate only upward or downward around the rotation center axis. The push handle group 31 rotates upward or downward relative to the main frame 20, and the push handle group 31 cannot rotate left or right around the rotation center axis. The push handle group 31 cannot rotate left or right relative to the main frame 20, thereby realizing the unfolding and folding of the rear frame 30 relative to the main frame 20.

[0051] In some embodiments, the stroller 100 further includes an elastic member having an elastic force driving the locking mechanism 32 toward the locking position. When the handle assembly 31 moves from the folded position to the unfolded position, the locking member deviates from the locking position, thereby reducing the resistance when the handle assembly 31 moves to the unfolded position.

[0052] Specifically, the elastic member is located in the mounting groove 311, and the elastic member abuts against the rear portion of the locking mechanism 32. When the handle group 31 is in the folded position, the locking mechanism 32 moves from the unlocked position to the locked position under the drive of the elastic member; when the handle group 31 moves from the folded position to the unfolded position, the locking mechanism 32 abuts against the main frame 20 and compresses the elastic member. The locking mechanism 32 deviates from the locked position in the direction of the unlocked position, thereby reducing the resistance when the handle group 31 moves to the unfolded position, so that the handle group 31 moves smoothly to the unfolded position. When the handle group 31 is in the unfolded position, the elastic member releases the elastic force, so that the locking mechanism 32 returns to the locked position. At this time, the locking mechanism 32 locks the handle group 31 relative to the main frame 20.

[0053] Optionally, the elastic member may be a spring having strong elastic deformation capability. After the external force disappears, the spring can quickly return to its original state, thereby ensuring that the locking mechanism 32 can be reset to the locking position in time.

[0054] Combination Figure 7In some embodiments, the push handle assembly 31 includes a first tube portion 313, which is rotatably connected to the main frame 20, and a locking mechanism 32 is disposed on the first tube portion 313. When the locking mechanism 32 is in the locking position, the locking mechanism 32 penetrates the main frame 20 and the first tube portion 313; when the locking mechanism 32 is in the unlocking position, the locking mechanism 32 is completely located in the first tube portion 313. The push handle assembly 31 also includes a second tube portion 314, which is connected to the first tube portion 313 and is perpendicular to the first tube portion 313. The rear wheels 40 are connected to both ends of the second tube portion 314. When the push handle assembly 31 is folded, the first tube portion 313 drives the second tube portion 314 to move, so that the rear wheels 40 can be folded relative to the main frame 20.

[0055] Specifically, the first tube portion 313 extends in the front-to-back direction, and the locking mechanism 32 is arranged at the end of the first tube portion 313. In the locked position, the locking mechanism 32 passes through the main frame 20 and the first tube portion 313, and the first tube portion 313 is fixed relative to the main frame 20. The first tube portion 313 cannot rotate relative to the main frame 20, and the handle group 31 is locked in the unfolded position by the locking mechanism 32; when the locking mechanism 32 is unlocked, the driving mechanism 33 drives the locking mechanism 32 to move from the locked position to the unlocked position. The locking mechanism 32 is completely located in the first tube portion 313 in the unlocked position, and the fixation of the handle group 31 relative to the main frame 20 is released. The handle group 31 is rotatably connected to the main frame 20 at the first tube portion 313, and the handle group 31 is rotated to achieve the folding of the handle group 31 relative to the main frame 20.

[0056] In addition, the second tube portion 314 extends in the left-right direction. When the handlebar assembly 31 is folded, the first tube portion 313 rotates from the unfolded position to the folded position around the rear end of the main frame 20. The first tube portion 313 drives the second tube portion 314 to rotate upward together. The rear wheel 40 is fixedly connected to both ends of the second tube portion 314. Driven by the second tube portion 314, the rear wheel 40 rotates from the unfolded position to the folded position. The rear wheel 40 moves closer to the main frame 20, thereby realizing the folding of the rear wheel 40 relative to the main frame 20.

[0057] In some embodiments, the push handle assembly 31 further includes a third tube portion 315, a fourth tube portion 316, and a fifth tube portion 317. In the unfolded position, the third tube portion 315 and the fourth tube portion 316 extend in the up-down direction, and the lower ends are connected to the first tube portion 313. The fifth tube portion 317 extends in the left-right direction, and the two ends are respectively connected to the upper ends of the third tube portion 315 and the upper ends of the fourth tube portion 316. The driving mechanism 33 is disposed on the third tube portion 315, the fourth tube portion 316, or the fifth tube portion 317. When the push handle assembly 31 is folded, the first tube portion 313 drives the third tube portion 315, the fourth tube portion 316, and the fifth tube portion 317 to rotate from the unfolded position to the folded position, so as to realize the folding of the push handle assembly 31. The driving mechanism 33 is disposed on any one of the third tube portion 315, the fourth tube portion 316, and the fifth tube portion 317, so as to realize the driving of the locking mechanism 32.

[0058] For example, when the handle assembly 31 is folded, the first tube 313 rotates around the rear end of the main frame 20 from the unfolded position to the folded position, the first tube 313 drives the third tube 315 and the fourth tube 316 to rotate forward together, the third tube 315 and the fourth tube 316 drive the fifth tube 317 to rotate forward, the third tube 315, the fourth tube 316 and the fifth tube 317 are retracted relative to the main frame 20, and the handle assembly 31 is folded relative to the main frame 20. The driving mechanism 33 can be set in one of the third tube 315, the fourth tube 316 or the fifth tube 317, and can drive the locking mechanism 32 to move from the locked position to the unlocked position.

[0059] Combination Figure 8 In some embodiments, the driving mechanism 33 includes: a main body 331, which is connected to the push handle assembly 31; a sliding part 332, which is movably arranged on the main body 331 along the extension direction of the push handle assembly 31; and a button part 333, which is movably connected to the main body 331 and drives the sliding part 332 to move. The driving mechanism 33 can be arranged on the upper part of the push handle assembly 31, and the user can drive the locking structure 32 by the driving structure 33 without bending over. The sliding part 332 is in transmission connection with the locking mechanism 32, and the button part 333 has a first position and a second position. In the first position, the locking mechanism 32 is driven to move to the unlocking position, and in the second position, the driving force on the locking mechanism 32 is released.

[0060] Specifically, when the handle group 31 is unfolded, the button part 333 is located at the second position, and the sliding part 332 is located at the initial position. The button part 333 has no force on the sliding part 332, and the sliding part 332 has no force on the locking mechanism 32. At this time, the locking mechanism 32 is in the locking position and locks the handle group 31 in the unfolded position; when the handle group 31 is folded, the button part 333 moves from the second position to the first position, and the button part 333 drives the sliding part 332 to move on the main body 331. The force of the button part 333 driving the sliding part 332 to move is converted into a force of the sliding part 332 driving the locking mechanism 32 to move, and the sliding part 332 pulls the locking mechanism 32 from the locked position to the unlocked position. The locking mechanism 32 releases the lock on the handle group 31, and the handle group 31 rotates relative to the main frame 20 from the unfolded position to the folded position, thereby realizing the folding of the handle group 31 relative to the main frame 20.

[0061] Optionally, the sliding part 332 and the locking mechanism 32 can be connected to each other through a flexible pull rope, one end of the flexible pull rope can be connected to the sliding part 332, and the other end of the flexible pull rope can be connected to the locking mechanism 32, so that the sliding part 332 drives the locking mechanism 32 to move to the unlocking position.

[0062] Optionally, the extension direction of the main body 331 can be along the left-right direction, the sliding part 332 can be set on the main body 331 along the left-right direction, and slide along the left-right direction; it can also be extended along the up-down direction, the sliding part 332 can be set on the main body 331 along the up-down direction, and slide along the up-down direction.

[0063] In some embodiments, the main body 331 is provided with a first slide groove 3311 and a second slide groove 3312 distributed along a first direction, the first slide groove 3311 and the second slide groove 3312 extend along the first direction, the button portion 333 is movably connected to the main body 331 along the second direction, the button portion 333 is provided with a third slide groove 3331 and a fourth slide groove 3332 distributed along the first direction, the third slide groove 3331 and the fourth slide groove 3332 are inclined in a direction of approaching each other in the second direction, the first direction is perpendicular to the second direction, the sliding portion 332 includes a first shaft pin 3321 and a second shaft pin 3322, the first shaft pin 3321 is penetrated through the first slide groove 3311 and the third slide groove 3331, the second shaft pin 3322 is penetrated through the second slide groove 3312 and the fourth slide groove 3332, the first shaft pin 3321 and / or the second shaft pin 3322 are transmission connected to the locking mechanism 32. When the handle assembly 31 is folded, the button portion 333 moves from the second position to the first position, driving the first shaft pin 3321 and the second shaft pin 3322 to move closer to each other, and the first shaft pin 3321 or the second shaft pin 3322 drives the locking mechanism 32 to move to the unlocking position.

[0064] Specifically, a first shaft pin 3321 and a second shaft pin 3322 are provided to restrict the button portion 333 from moving in the left-right direction and to be movably connected to the main body portion 331 only in the second direction. When the handlebar group 31 is folded, the button portion 333 is pressed to move along the second direction, and the button portion 333 drives the first shaft pin 3321 to move in the first slide groove 3311 and the third slide groove 3331 along the first direction, and the button portion 333 drives the second shaft pin 3322 to move in the second slide groove 3312 and the fourth slide groove 3332 along the first direction, and the first shaft pin 3321 and the second shaft pin 3322 approach each other, and the force driven by the button portion 333 to drive the first shaft pin 3321 or the second shaft pin 3322 is converted into a force for the first shaft pin 3321 or the second shaft pin 3322 to drive the locking mechanism 32 to move, and the first shaft pin 3321 or the second shaft pin 3322 pulls the locking mechanism 32 in a direction away from the locking position, pulling the locking mechanism 32 to move from the locking position to the unlocking position, and the locking mechanism 32 releases the lock of the handlebar group 31 in the unfolded position, and the handlebar group 31 can rotate and fold relative to the main frame 20, thereby achieving the purpose of folding the handlebar group 31.

[0065] Optionally, the extension direction of the main body 331 may be along the left-right direction, the first direction may be along the left-right direction, and the second direction may be along the up-down direction, the first slide groove 3311 and the second slide groove 3312 may extend along the left-right direction and be arranged on the main body 331, the third slide groove 3331 and the fourth slide groove 3332 may be arranged on the button portion 333 along the left-right direction, and the ends of the third slide groove 3331 and the fourth slide groove 3332 that are close to each other may be inclined along the up-down direction; the extension direction of the main body 331 may be along the up-down direction, the first direction may be along the up-down direction, and the second direction may be along the left-right direction, the first slide groove 3311 and the second slide groove 3312 may extend along the up-down direction and be arranged on the main body 331, the third slide groove 3331 and the fourth slide groove 3332 may be arranged on the button portion 333 along the up-down direction, and the ends of the third slide groove 3331 and the fourth slide groove 3332 that are close to each other may be inclined along the left-right direction.

[0066] Optionally, the first axle pin 3321 and the second axle pin 3322 can be steel axle pins, which have the advantages of high strength, good rigidity, and wear resistance, and can ensure the stability of the connection between the button part 333 and the main body 331 and prevent the button part 333 from separating from the main body 331.

[0067] In some embodiments, the driving mechanism 33 also includes: a sliding portion 332, the sliding portion 332 is slidably disposed on the main body 331 along a first direction, the sliding portion 332 includes a positioning block 3323, wherein the button portion 333 is provided with a yield groove 3333, the positioning block 3323 extends into the yield groove 3333 at the first position, and the positioning block 3323 stops at the button portion 333 at the second position, and limits the button portion 333 from moving toward the first position.

[0068] Specifically, the sliding portion 332 includes a first button, which can be disposed outside the main body 331 , and the first button is fixedly connected to the positioning block 3323 . When the handlebar group 31 is folded, the first button is moved along the first direction, and the first button pulls the positioning block 3323 to move until the positioning block 3323 extends into the yield groove 3333. The button part 333 can then move from the second position to the first position along the second direction. The button part 333 drives the first axle pin 3321 or the second axle pin 3322 to move closer to each other along the first direction. The force driven by the button part 333 to drive the first axle pin 3321 or the second axle pin 3322 is converted into the force driven by the first axle pin 3321 or the second axle pin 3322 to drive the locking mechanism 32 to move. The first axle pin 3321 or the second axle pin 3322 pulls the locking mechanism 32 from the locked position to the unlocked position in a direction away from the locked position. The locking mechanism 32 releases the lock on the handlebar group 31 in the unfolded position, and the handlebar group 31 can rotate and fold relative to the main frame 20 to achieve the folding of the handlebar group 31. When the handle assembly 31 is converted from the folded position to the unfolded position, the button portion 333 returns to the second position due to gravity, and the positioning block 3323 abuts against the upper end of the button portion 333, restricting the button portion 333 from moving to the first position, thereby preventing the locking mechanism 32 from being unlocked when the handle assembly 31 is in the unfolded position.

[0069] Optionally, the extension direction of the main body 331 may be along the left and right direction, the first direction may be along the left and right direction, and the second direction may be along the up and down direction; the extension direction of the main body 331 may be along the up and down direction, the first direction may be along the up and down direction, and the second direction may be along the left and right direction.

[0070] Optionally, a spring may be provided in the sliding portion 332 , and after the handle assembly 31 is folded, the spring may release elastic force and drive the sliding portion 332 to return to the initial position, and limit the button portion 333 from moving from the second position to the first position.

[0071] A baby carriage 100 according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

[0072] Combination Figures 1 to 8When the handlebar assembly 31 is in the unfolded position, the front frame 10 extends in the up-down direction, the main frame 20 extends in the left-right direction, the mounting seat 21 is arranged at the rear end of the main frame 20, and the end of the handlebar assembly 31 has a rotating portion 312, the rotating portion 312 is rotatably connected to the mounting seat 21, the locking mechanism 32 is arranged in the positioning groove 311 of the rotating portion 312, and the locking mechanism 32 is penetrated through the rotating portion 312 and the mounting seat 21 to lock the handlebar assembly 31 in the unfolded position. The push handle group 31 includes a first tube portion 313, a second tube portion 314, a third tube portion 315, a fourth tube portion 316 and a fifth tube portion 317. The rotating portion 312 is sleeved on the front end of the first tube portion 313. The rear end of the first tube portion 313 is connected to the second tube portion 314. The lower end of the third tube portion 315 and the lower end of the fourth tube portion 316 are respectively connected to the second tube portion 314 on the left and right sides. The two ends of the fifth tube portion 317 are respectively connected to the upper end of the third tube portion 315 and the upper end of the fourth tube portion 316. The second tube portion 314 and the fifth tube portion 317 extend in the left-right direction, and the third tube portion 315 and the fourth tube portion 316 extend in the up-down direction.

[0073] The left and right sides of the second pipe portion 314 are connected to the rear wheels 40 respectively.

[0074] The driving mechanism 33 is arranged in the middle of the fifth tube 317, the main body 331 of the driving mechanism 33 is connected to the fifth tube 317 in the left-right direction, the first slide groove 3311 and the second slide groove 3312 are distributed and extended in the left-right direction, the button part 333 is movably connected to the main body 331 in the up-down direction, the two ends of the third slide groove 3331 and the fourth slide groove 3332 close to each other are inclined in the up-down direction, the first shaft pin 3321 is passed through the first slide groove 3311 and the third slide groove 3331, and the second shaft pin 3322 is passed through the second slide groove 3312 and the fourth slide groove 3332. The push handle assembly 31 includes a pull rope, the pull rope has a hole end and a cylindrical end, the hole end of the pull rope is sleeved on the first shaft pin 3321 or the second shaft pin 3322, the cylindrical end of the pull rope is clamped on the locking mechanism 32, and the rope body of the pull rope is located in the tube of the push handle assembly 31. The main body 331 is provided with a first button and a positioning block 3323 . The button 333 is provided with a positioning groove. The first button is fixedly connected to the positioning block 3323 and is movable in the left-right direction at the upper part of the main body 331 .

[0075] When the push handle assembly 31 is rotated from the unfolded position to the folded position, the first button is moved rightward, and the first button drives the positioning block 3323 to extend into the positioning groove, and the button portion 333 can move from the second position to the first position. The button portion 333 is pressed upward, and the button portion 333 moves from the second position to the first position, and drives the first axle pin 3321 and the second axle pin 3322 to move closer in the left and right directions. The first axle pin 3321 or the second axle pin 3322 pulls the hole end of the pull rope to the right or left in the main body 331, and the force of the first axle pin 3321 or the second axle pin 3322 pulling the hole end is transmitted to the cylindrical end along the rope body, and the cylindrical end pulls the locking mechanism 32 along the direction of the positioning groove 311 away from the opening, and the locking mechanism 32 moves from the locked position to the unlocked position. The locking mechanism 32 is completely located in the rotating portion 312 and releases the lock on the handle group 31. The handle group 31 can rotate relative to the main frame 20, and finally the handle group 31 is rotated upward to realize the folding of the rear frame 30 relative to the main frame 20.

[0076] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0077] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0078] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0081] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A baby carriage (100), comprising a front frame (10), a main frame (20) and a rear frame (30), wherein the lower end of the front frame (10) is connected to a front wheel, and the main frame (20) is connected to the front frame (10) and the rear frame (30), characterized in that: The rear frame (30) further comprises: A push handle group (31), the lower part of which is rotatably connected to the main frame (20), the lower end of which is connected to a rear wheel (40), and the push handle group (31) has an unfolded position and a folded position; A locking mechanism (32), the locking mechanism (32) having a locking position and an unlocking position, wherein the push handle assembly (31) is locked at the unfolded position at the locking position and the push handle assembly (31) is unlocked at the unlocking position; A driving mechanism (33) is arranged on the upper part of the push handle assembly (31) and is transmission-connected to the locking mechanism (32). The driving mechanism (33) is used to drive the locking mechanism (32) to release the lock on the push handle assembly (31).

2. The baby carriage (100) according to claim 1, characterized in that: The rear frame (30) also includes a flexible pull rope, and the flexible pull rope is respectively connected to the locking mechanism (32) and the driving mechanism (33).

3. The baby carriage (100) according to claim 2, characterized in that: The flexible pull rope is arranged in the push handle assembly (31).

4. The baby carriage (100) according to claim 1, characterized in that: A mounting seat (21) is provided at the rear end of the main frame (20); the push handle assembly (31) is rotatably connected to the mounting seat (21); the mounting seat (21) is provided with a positioning hole (211); the push handle assembly (31) is provided with a mounting groove (311); an end of the mounting groove (311) is provided with an opening; the locking mechanism (32) is provided in the mounting groove (311) and is movable along the mounting groove (311); in the locking position, the locking mechanism (32) extends out of the opening and passes through the positioning hole (211).

5. The baby carriage (100) according to claim 4, characterized in that: The mounting seat (21) comprises a positioning plate (212), wherein the positioning plate (212) is parallel to the rotation center axis of the push handle assembly (31). The push handle assembly (31) includes a rotating part (312), and the circumferential surface of the rotating part (312) includes a first surface (3121) and a second surface (3122), wherein the first surface (3121) is configured as an arc surface surrounding the rotation center axis, and the second surface (3122) is connected to the first surface (3121) and is configured as a plane extending along the tangent direction of the first surface (3121), wherein the second surface (3122) is opposite to the positioning plate (212) in the unfolded position, and the first surface (3121) is opposite to the positioning plate (212) in the folded position.

6. The baby carriage (100) according to claim 5, characterized in that: The mounting seat (21) further comprises a first side plate (213) and a second side plate (214), wherein the first side plate (213) and the second side plate (214) are connected to the positioning plate (212) and are relatively distributed, and an end portion of the push handle group (31) is rotatably connected between the first side plate (213) and the second side plate (214).

7. The baby carriage (100) according to claim 4, characterized in that: An inclined surface is provided at the end of the locking mechanism (32), and the inclined surface is opposite to the mounting seat (21) in the folded position, so that the mounting seat (21) abuts against the inclined surface when the push handle assembly (31) moves from the folded position to the unfolded position, thereby driving the locking mechanism (32) to move toward the unlocked position.

8. The baby carriage (100) according to claim 1, characterized in that: The rotation center axis of the push handle assembly (31) extends in the left-right direction; And / or, the baby carriage (100) further comprises an elastic member, wherein the elastic member has an elastic force for driving the locking mechanism (32) toward the locking position.

9. The baby carriage (100) according to any one of claims 1 to 8, characterized in that: The push handle group (31) includes a first tube portion (313), the first tube portion (313) is rotatably connected to the main frame (20), and the locking mechanism (32) is arranged on the first tube portion (313); the push handle group (31) also includes a second tube portion (314), the second tube portion (314) is connected to the first tube portion (313) and is perpendicular to the first tube portion (313), and the rear wheel (40) is connected to both ends of the second tube portion (314).

10. The baby carriage (100) according to claim 9, characterized in that: The push handle group (31) also includes a third tube portion (315), a fourth tube portion (316) and a fifth tube portion (317). In the unfolded position, the third tube portion (315) and the fourth tube portion (316) extend in the up-down direction, and the lower ends are connected to the first tube portion (313). The fifth tube portion (317) extends in the left-right direction, and the two ends are respectively connected to the upper end of the third tube portion (315) and the upper end of the fourth tube portion (316). The driving mechanism (33) is arranged on the third tube portion (315), the fourth tube portion (316) or the fifth tube portion (317).

11. The baby carriage (100) according to claim 1, characterized in that: The driving mechanism (33) comprises: A main body (331), the main body (331) being connected to the push handle assembly (31); A sliding portion (332), the sliding portion (332) being movably disposed on the main body (331) along an extension direction of the push handle assembly (31); A button portion (333), wherein the button portion (333) is movably connected to the main body portion (331) and drives the sliding portion (332) to move. The sliding portion (332) is transmission-connected to the locking mechanism (32), and the button portion (333) has a first position and a second position. In the first position, the locking mechanism (32) is driven to move to the unlocking position, and in the second position, the driving force on the locking mechanism (32) is released.

12. The baby carriage (100) according to claim 11, characterized in that: The main body (331) is provided with a first slide groove (3311) and a second slide groove (3312) distributed along a first direction, the first slide groove (3311) and the second slide groove (3312) extend along the first direction, the button part (333) is movably connected to the main body (331) along the second direction, the button part (333) is provided with a third slide groove (3331) and a fourth slide groove (3332) distributed along the first direction, the third slide groove (3331) and the fourth slide groove (3332) are inclined in a direction of approaching each other in the second direction, and the first direction is perpendicular to the second direction. The sliding portion (332) includes a first axle pin (3321) and a second axle pin (3322), wherein the first axle pin (3321) is inserted into the first slide groove (3311) and the third slide groove (3331), and the second axle pin (3322) is inserted into the second slide groove (3312) and the fourth slide groove (3332), and the first axle pin (3321) and / or the second axle pin (3322) are transmission-connected to the locking mechanism (32).

13. The baby carriage (100) according to claim 12, characterized in that: The driving mechanism (33) further comprises: a sliding portion (332), the sliding portion (332) being slidably disposed on the main body (331) along the first direction, the sliding portion (332) comprising a positioning block (3323), The button part (333) is provided with a clearance groove (3333), and in the first position the positioning block (3323) extends into the clearance groove (3333), and in the second position the positioning block (3323) stops against the button part (333) and limits the button part (333) from moving toward the first position.

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