Bidirectional reversing baby stroller

Abstract

The invention provides a two-way reversing baby stroller. The two-way reversing baby stroller comprises a push handle assembly, two handle assemblies and a bearing assembly. The push handle assembly comprises a push rod and two connecting rods, and the two connecting rods are connected with the two ends of the push rod correspondingly. The handle assembly comprises a handle, a double-lock unit and a steering joint unit. The handle is connected with one end of the connecting rod away from the push rod; the two-lock unit at least comprises a sliding piece which is connected to the handle in a sliding mode. The steering joint unit at least comprises a first joint seat, and the first joint seat is connected with the handle; the bearing assembly comprises a first frame, a second frame and two bearing joint units, and the second frame is rotationally connected with the first frame; each bearing joint unit comprises second joint seats and a locking block, the two second joint seats are both connected with the first frame, the second joint seats are hinged to the first joint seats, and the locking blocks are installed on the first joint seats in a sliding mode and are in driving connection with the sliding pieces. Under the locking state of the double-lock unit, the sliding piece can move by a first section of distance in the direction away from the handle, when the sliding piece moves in place, the locking block unlocks the first section, the handle and the first joint base rotate in the first direction, and handle pushing reversing operation is conducted; according to the two-way reversing baby stroller, the pushing handle can be reversed, forward pushing and backward pushing can be achieved at the same time, steering is not needed in a narrow area, and pushing flexibility is high.

Description

Technical Field

[0001] The present invention relates to the technical field of baby strollers, and in particular to a two-way reversible baby stroller. Background Art

[0002] A baby stroller is not only a practical tool for going out, but also provides a comfortable environment for resting and playing for babies, while promoting their physical and intellectual development. A baby stroller needs to have the functions of pushing and folding. Traditional baby strollers generally have the function of folding, but they can only be pushed on one side, and the push handle cannot be pushed forward and backward at the same time. In areas with narrow space, turning is more troublesome and the pushing flexibility is not enough; and when folding, it can only be folded in one direction, which is inconvenient to operate. Summary of the invention

[0003] In view of this, the present invention proposes a two-way reversible baby stroller to solve the technical problems that the push handle proposed in the above background technology cannot simultaneously satisfy the requirements of forward and backward pushing, and can only be pushed on one side. In areas with narrow space, turning is more troublesome and the pushing flexibility is insufficient; and when folding, it can only be folded from one direction, and the direction needs to be identified when storing, which is inconvenient to operate.

[0004] The technical solution of the present invention is achieved in this way:

[0005] The present invention provides a two-way reversible baby stroller, comprising a push handle assembly, two handle assemblies and a bearing assembly, wherein:

[0006] The push handle assembly includes a push rod and two connecting rods, and the two connecting rods are respectively connected to two ends of the push rod;

[0007] The handle assembly includes a handle, a two-way lock unit and a steering joint unit; the handle is connected to an end of the connecting rod away from the push rod; the two-way lock unit at least includes a sliding member, and the sliding member is slidably connected to the handle; the steering joint unit at least includes a first joint seat, and the first joint seat is connected to the handle;

[0008] The bearing assembly comprises a first frame, a second frame and two bearing joint units, wherein the second frame is rotatably connected to the first frame; the bearing joint unit comprises a second joint seat and a locking block, wherein the two second joint seats are both connected to the first frame, the second joint seat is hinged to the first joint seat, the locking block is slidably mounted on the first joint seat, and the locking block is drivingly connected to the sliding member;

[0009] The two-way lock unit has the following two states: in the locked state, the sliding member can move a first distance in the direction away from the handle, and when it is moved into place, the locking block unlocks the first section; in the unlocked state, the sliding member can continue to move a second distance in the direction away from the handle, and when it is moved into place, the locking block unlocks the second section;

[0010] When the locking block is in the state of unlocking the first section, the handle and the first joint seat rotate in the first direction to perform a push handle reversal operation, and the first joint seat is limited in the second direction, and the second direction is opposite to the first direction;

[0011] When the locking block is in the state of unlocking the second section, the handle rotates along the second direction, and the second frame and the first frame approach each other to perform a folding operation.

[0012] On the basis of the above technical solution, preferably, a first limiting portion is provided on the handle;

[0013] The sliding member comprises a sliding body, a resisting portion and a pressing portion, wherein the resisting portion and the pressing portion are respectively arranged at two ends of the sliding body, the resisting portion is used to be hooked and limited with the first limiting portion, and the pressing portion is slidably installed in the locking hole;

[0014] The two-way lock unit also includes a wrench and a reset spring. The wrench is slidably mounted on the connecting rod. The outer wall of the wrench is provided with a locking hole. The interior of the wrench is hollow and the inner wall is provided with a support portion. The reset spring is located between the support portion and the pressing portion.

[0015] When the two-way locking unit is in a locked state, the sliding body abuts against the inner wall of the wrench and the pressing portion extends out of the locking hole, and the abutting portion is limited by the first limiting portion;

[0016] When the two-way lock unit is in an unlocked state, the pressing portion is pressed into the locking hole, and the abutting portion is no longer limited by the first limiting portion.

[0017] On the basis of the above technical solution, preferably, the steering joint unit also includes a first locking spring, an unlocking wire and a locking ring, the first locking spring is compressed between the locking block and the first joint seat to straighten the unlocking wire, and the two ends of the unlocking wire are respectively connected to the locking block and the sliding member; the locking ring is fixed on the second joint seat for limiting the position between the locking block.

[0018] On the basis of the above technical solution, preferably, a protrusion is provided on the locking block;

[0019] The inner ring of the lock ring is provided with a first guide portion and a second limiting portion, and the second limiting portion can limit the protrusion;

[0020] When the sliding member moves a first distance in a direction away from the handle, one end of the protrusion slides to the end portion of the first guide portion close to the inner side, and the other end of the protrusion is limited by the second limiting portion.

[0021] On the basis of the above technical solution, preferably, the steering joint unit further comprises a first reinforcement sheet, the first reinforcement sheet is inserted into the first joint seat, and the first reinforcement sheet is provided with an avoidance hole for avoiding the protrusion.

[0022] On the basis of the above technical solution, preferably, the bearing assembly also includes a connection locking mechanism, which is respectively connected to the second joint seat and the second frame, and is used to lock the second joint seat and the second frame when the push rod completes the push handle reversing operation.

[0023] On the basis of the above technical solution, preferably, the bearing assembly further comprises a second reinforcing sheet, the second reinforcing sheet is fixedly connected to the second frame and hinged to the first frame, the second reinforcing sheet is provided with an arc groove, and one end of the arc groove is provided with a third limiting portion in a direction away from the center of the circle;

[0024] The second joint seat is provided with a pushing groove;

[0025] The connection and locking mechanism comprises a driving plate, an unlocking push block and a slider, wherein the driving plate is fixedly mounted on the first joint seat, and a cam groove is provided on the driving plate; the unlocking push block is slidably mounted in the push groove, a sliding column and a guide groove are provided on the unlocking push block, the sliding column is slidably mounted in the cam groove, the slider is slidably mounted in the guide groove, a limiting column is provided on the slider, the limiting column is slidably mounted in the arc groove, and the unlocking push block is drivingly connected to the slider;

[0026] When the push rod completes the push handle reversing operation, the slide column slides to the distal section of the cam groove, and the limiting column is located in the third limiting portion, thereby realizing the locking of the second joint seat and the second frame;

[0027] When the second lock unit is in the unlocked state and the handle rotates in the second direction, the slide column slides to the proximal section of the cam groove, and the limiting column slides out of the third limiting portion, thereby unlocking the second joint seat and the second frame.

[0028] On the basis of the above technical solution, preferably, the connection locking mechanism also includes a second locking spring and an unlocking spring, the second locking spring is located between the unlocking push block and the slider, and the unlocking spring is located between the slider and the inner wall of the push groove.

[0029] On the basis of the above technical solution, preferably, the minimum thrust of the second locking spring is greater than the maximum thrust of the unlocking spring.

[0030] Based on the above technical solution, preferably, two front wheels and two rear wheels are respectively provided under the first frame and the second frame, the first frame is provided with a front brake for braking the front wheels, and the second frame is also provided with a rear brake for braking the rear wheels.

[0031] The two-way reversing baby stroller and the installation method of the present invention have the following beneficial effects compared with the prior art:

[0032] (1) With the two-way lock unit in a locked state, the sliding member can move a first distance in a direction away from the handle. When the sliding member is in place, the locking block unlocks the first distance, and the handle and the first joint seat rotate in a first direction to perform a push handle reversal operation. The two-way reversing baby stroller of the present invention can perform push handle reversal, and can simultaneously meet the requirements of forward pushing and backward pushing. In areas with limited space, there is no need to turn, and the pushing flexibility is high;

[0033] When the second lock unit is unlocked, the sliding member can continue to move a second distance in the direction away from the handlebar. When the sliding member is in place, the locking block unlocks the second section. When the locking block unlocks the second section, the handlebar rotates in the second direction, and the second frame and the first frame are brought close to each other for folding. After the reversal is completed, the handlebar can be folded by rotating it in the opposite direction. The operation is the same when pushing forward or backward. Therefore, the folding can be performed in two directions, and the operation is more convenient.

[0034] (2) When the two-way locking unit is in a locked state, the sliding body abuts against the inner wall of the wrench and the pressing portion extends out of the locking hole, and the sliding body can slide a first distance until the abutting portion is limited by the first limiting portion; when the two-way locking unit is in an unlocked state, the pressing portion is pressed into the locking hole, the abutting portion is no longer limited by the first limiting portion, and the sliding body can slide a second distance;

[0035] (3) When the sliding member moves a first distance in a direction away from the handle, one end of the protrusion slides to the end of the first guide portion close to the inner side, and the other end of the protrusion is limited by the second limiting portion, so that the protrusion can only rotate in the first direction and is limited in the second direction;

[0036] (4) When the push rod completes the push handle reversing operation, the slide column slides to the distal section of the cam groove, and the limit column is located in the third limit portion, thereby realizing the locking of the second joint seat and the second frame, which is convenient for fixation during use; when the second lock unit is in the unlocked state, when the handle rotates along the second direction, the slide column slides to the proximal section of the cam groove, and the limit column slides out of the third limit portion, thereby realizing the unlocking of the second joint seat and the second frame, which is convenient for folding operation;

[0037] (5) Because the minimum thrust of the second locking spring is greater than the maximum thrust of the unlocking spring, after the second joint seat and the second frame are unlocked, the second reinforcement plate does not need to be unfolded in sequence, and the unlocking push block will not be stuck even if it is pressed down, thereby improving the reliability and stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a schematic structural diagram of a two-way reversible baby stroller in an embodiment of the present invention;

[0040] Figure 2 is an exploded view of a two-way reversible baby stroller in an embodiment of the present invention;

[0041] Figure 3 In the embodiment of the present invention Figure 1 A partial cross-sectional view of the middle section A;

[0042] Figure 4 An exploded view of a handle assembly in an embodiment of the present invention;

[0043] Figure 5 is a schematic structural diagram of a lock ring in an embodiment of the present invention;

[0044] Figure 6 is a schematic structural diagram of a steering joint unit in an embodiment of the present invention;

[0045] Figure 7 A schematic diagram of the structure of a first frame and a second frame in an embodiment of the present invention;

[0046] Figure 8 is a schematic structural diagram of a second vehicle frame and a second reinforcement sheet in an embodiment of the present invention;

[0047] Fig. 9It is a schematic diagram of the installation of the connection locking mechanism and the second joint seat in an embodiment of the present invention;

[0048] Fig.10 is a schematic structural diagram of a second joint seat in an embodiment of the present invention;

[0049] Fig.11 is a schematic structural diagram of a driving board in an embodiment of the present invention;

[0050] Fig.12 A schematic diagram of the structure of a connection and locking mechanism in an embodiment of the present invention;

[0051] Fig.13 is a schematic diagram of the connection between the second reinforcement sheet and the sliding column in an embodiment of the present invention;

[0052] Fig.14 It is a schematic diagram of the structure of the two-way reversing baby stroller in the embodiment of the present invention after the handle reversing operation is completed;

[0053] Fig.15 Schematic diagram of the structure of the two-way reversible baby stroller in the embodiment of the present invention in the folded state.

[0054] Description of reference numerals: 100 - push handle assembly, 200 - handle assembly, 300 - load-bearing assembly;

[0055] 110-push rod, 120-connecting rod;

[0056] 210-handle, 211-first limiting portion;

[0057] 220-two-way lock unit, 221-sliding member, 2211-sliding body, 2212-contact portion, 2213-pressing portion, 2214-accommodating groove, 222-wrench, 2221-locking hole, 2222-supporting portion, 223-reset spring;

[0058] 230-steering joint unit, 231-first joint seat, 232-first locking spring, 233-unlocking wire, 234-locking ring, 2341-first guide part, 2342-second limiting part, 235-first reinforcing sheet, 2351-avoidance hole;

[0059] 310-first frame, 311-front wheel, 312-front brake;

[0060] 320-second frame, 321-rear wheel, 322-rear brake;

[0061] 330-bearing joint unit, 331-second joint seat, 3311-pushing groove, 332-locking block, 3321-protruding portion;

[0062] 340-connecting locking mechanism, 341-driving plate, 3411-cam groove, 34111-distal section, 34112-proximal section, 342-unlocking push block, 3421-sliding column, 3422-guide groove, 343-sliding block, 3431-limiting column, 344-second locking spring, 345-unlocking spring;

[0063] 350 - second reinforcing plate, 351 - arc-shaped groove, 352 - third limiting portion. DETAILED DESCRIPTION

[0064] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] Reference Figure 1-15 As shown, in an embodiment of the present invention, a two-way reversible baby stroller is provided, comprising a push handle assembly 100, two handle assemblies 200 and a bearing assembly 300, wherein:

[0066] The push handle assembly 100 includes a push rod 110 and two connecting rods 120, and the two connecting rods 120 are respectively connected to two ends of the push rod 110;

[0067] The handle assembly 200 includes a handle 210, a two-way lock unit 220 and a steering joint unit 230; the handle 210 is connected to an end of the connecting rod 120 away from the push rod 110; the two-way lock unit 220 at least includes a sliding member 221, and the sliding member 221 is slidably connected to the handle 210; the steering joint unit 230 at least includes a first joint seat 231, and the first joint seat 231 is connected to the handle 210;

[0068] The bearing assembly 300 includes a first frame 310, a second frame 320 and two bearing joint units 330, wherein the second frame 320 is rotatably connected to the first frame 310; the bearing joint unit 330 includes a second joint seat 331 and a locking block 332, wherein the two second joint seats 331 are both connected to the first frame 310, the second joint seat 331 is hinged to the first joint seat 231, the locking block 332 is slidably mounted on the first joint seat 231, and the locking block 332 is drivingly connected to the sliding member 221;

[0069] The two-way lock unit 220 has the following two states: in the locked state, the sliding member 221 can move a first distance in the direction away from the handle 210, and when it is moved into place, the locking block 332 unlocks the first section; in the unlocked state, the sliding member 221 can continue to move a second distance in the direction away from the handle 210, and when it is moved into place, the locking block 332 unlocks the second section;

[0070] When the lock block 332 is in the state of unlocking the first section, the handle 210 and the first joint seat 231 rotate along the first direction to perform a push handle reversing operation, and the first joint seat 231 is limited in a second direction, and the second direction is opposite to the first direction; the first direction here refers to the opposite rotation of the push rod 110, and is not just a designated clockwise or counterclockwise direction. For example, the reversing operation from pushing forward can be changed to pushing backward, and the reversing operation from pushing backward can be changed to pushing forward. The rotation direction of the reversing operation of both is the first direction, but the rotation directions are different, so that a two-way reversing operation can be achieved;

[0071] When the locking block 332 is in the unlocked second section, the handle 210 rotates in the second direction, and the second frame 320 and the first frame 310 move closer to each other for folding operation.

[0072] The two-way reversible baby stroller proposed in this embodiment is capable of reversing the push handle, and can simultaneously meet the requirements of forward and backward pushing. In areas with limited space, there is no need to turn the push handle, and the pushing flexibility is high.

[0073] When the second lock unit 220 is unlocked, the sliding member 221 can continue to move a second distance in the direction away from the handle 210. When it moves into place, the locking block 332 unlocks the second section. When the locking block 332 unlocks the second section, the handle 210 rotates along the second direction, and the second frame 320 and the first frame 310 approach each other for folding. After the reversal is completed, the handle can be folded by rotating the handle in the opposite direction. The operation is the same when pushing forward or backward. Therefore, folding can be performed in two directions, and the operation is more convenient.

[0074] In some embodiments, the second lock unit 220 further includes a wrench 222 and a return spring 223. The wrench 222 is slidably mounted on the connecting rod 120. The outer wall of the wrench 222 is provided with a locking hole. The interior of the wrench 222 is hollow and the inner wall is provided with a support portion 2222. The sliding member 221 slides between the first limiting portion 211 and the end of the inner wall of the wrench 222. The first limiting portion 211 can be formed by protruding inward along the inner wall of the handle 210.

[0075] The handle 210 is provided with a first limiting portion 211;

[0076] The sliding member 221 includes a sliding body 2211, a resisting portion 2212 and a pressing portion 2213, wherein the resisting portion 2212 and the pressing portion 2213 are respectively arranged at two ends of the sliding body 2211, the resisting portion 2212 is formed by a projection of the sliding body 2211 in the opposite direction of the force direction of the pressing portion 2213, and an accommodating groove 2214 is dug on the inner wall of the pressing portion 2213, the resisting portion 2212 is used for hanging and limiting with the first limiting portion 211, and the maximum distance from the resisting portion 2212 to the first limiting portion 211 is 5 mm (i.e., the first distance), and the pressing portion 2213 is slidably installed in the locking hole;

[0077] The return spring 223 is located between the support portion 2222 and the pressing portion 2213. The return spring 223 is placed in the receiving groove 2214. The receiving groove 2214 forms a guide so that the pressing force on the pressing portion 2213 and the elastic force of the return spring 223 are located in the same straight line.

[0078] When the two-way lock unit 220 is in a locked state, the sliding body 2211 abuts against the inner wall of the wrench 222 and the pressing portion 2213 extends out of the locking hole, and the abutting portion 2212 is limited by the first limiting portion 211; when the pressing portion 2213 is not subjected to an external force, due to the elastic force of the return spring 223, the sliding body 2211 abuts against the inner wall of the wrench 222, and the pressing portion 2213 extends out of the locking hole. At this time, the abutting portion 2212 is limited by the first limiting portion 211, and the maximum moving distance of the sliding body 2211 is the first distance (5 mm);

[0079] When the second-way lock unit 220 is unlocked, the pressing portion 2213 is pressed into the locking hole, and the abutting portion 2212 is no longer limited by the first limiting portion 211. By applying external force to press the pressing portion 2213 into the locking hole, the abutting portion 2212 descends, and the pressing portion 2213 and the locking hole maintain a nested relationship, so that the second-way lock unit 220 is unlocked, the first limiting portion 211 no longer limits the abutting portion 2212, and the sliding body 2211 can continue to move the second distance (5mm).

[0080] In some embodiments, the steering joint unit 230 further includes a first locking spring 232, an unlocking wire 233 and a locking ring 234. The first locking spring 232 is compressed between the locking block 332 and the first joint seat 231 to straighten the unlocking wire 233. The two ends of the unlocking wire 233 are respectively connected to the locking block 332 and the sliding member 221. The locking ring 234 is fixed on the second joint seat 331 and is used to limit the position between the locking block 332. When the sliding member 221 is not subjected to external force, the thrust of the first locking spring 232 makes the locking block 332 have a tendency to move away from the wrench 222, and the unlocking wire 233 is straightened. When the external force on the sliding member 221 is greater than the thrust of the first locking spring 232, the sliding member 221 can move. When the external force disappears, the sliding member 221 automatically resets.

[0081] In some embodiments, a protrusion 3321 is provided on the locking block 332; a first guide portion 2341 and a second limiting portion 2432 are provided on the inner ring of the locking ring 234, and the second limiting portion 2432 can limit the protrusion 3321, the first guide portion 2341 is a plane intersecting the radial direction, and the minimum diameter of the second limiting portion 2432 is greater than the diameter of the end of the first guide portion 2341 close to the inner side; when the sliding member 221 moves a first distance in the direction away from the handle 210, one end of the protrusion 3321 slides to the inner side of the first guide portion 2341. end portion of the protrusion 3321, and the other end of the protrusion 3321 is limited by the second limiting portion 2432, so that the protrusion 3321 can only rotate in the first direction and is limited in the second direction, so that the first joint seat 231 and the sliding member 221 can only rotate in the first direction and are limited in the second direction; when the locking block 332 unlocks the second section, the protrusion 3321 slides to a position close to the center of the second joint seat 331, and the protrusion 3321 is no longer limited by the second limiting portion 2432, so that the sliding member 221 and the second joint seat 331 can rotate in the second direction to achieve a folding operation.

[0082] In some embodiments, the steering joint unit 230 also includes a first reinforcement plate 235, which is inserted into and fixed in the first joint seat 231. The first reinforcement plate 235 is provided with an avoidance hole 2351 for avoiding the protrusion 3321. The protrusion 3321 is located in the avoidance hole 2351 and can slide along the avoidance hole 2351. The length direction of the avoidance hole 2351 is parallel to the diameter direction of the first joint seat 231. The avoidance hole 2351 can also guide the sliding of the protrusion 3321.

[0083] In some embodiments, the bearing assembly 300 further includes a connection locking mechanism 340, which is respectively connected to the second joint seat 331 and the second frame 320, and is used to lock the second joint seat 331 and the second frame 320 when the push rod 110 completes the push handle reversal operation. The second joint seat 331 and the second frame 320 are locked by the connection locking mechanism 340 when the push rod 110 completes the push handle reversal operation, so that when in use, the second joint seat 331 and the second frame 320 can be fixed and will not shrink or fold when being pushed, thereby improving the reliability and stability of the device.

[0084] In some embodiments, the bearing assembly 300 further includes a second reinforcing sheet 350, the second reinforcing sheet 350 is fixedly connected to the second frame 320 and is hinged to the first frame 310, the second reinforcing sheet 350 is provided with an arc groove 351, and one end of the arc groove 351 is provided with a third limiting portion 352 in a direction away from the center of the circle;

[0085] The second joint seat 331 is provided with a pushing groove 3311;

[0086] The connection locking mechanism 340 includes a driving plate 341, an unlocking push block 342, a slider 343, a second locking spring 344 and an unlocking spring 345. The driving plate 341 is fixedly mounted on the first joint seat 231. The driving plate 341 is provided with a cam groove 3411. The cam groove 3411 includes a distal segment 34111 and a proximal segment 34112. The distal segment 34111 is a circular arc with a larger radius, and the proximal segment 34112 is a circular arc with a smaller radius. The distal segment 34111 and the proximal segment 34112 have a smooth transition. The unlocking push block 342 is slidably mounted on the push groove 3311 In the embodiment, the unlocking push block 342 is provided with a slide post 3421 and a guide groove 3422, the slide post 3421 is slidably installed in the cam groove 3411, the slider 343 is slidably installed in the guide groove 3422, the slider 343 is provided with a limit post 3431, the limit post 3431 is slidably installed in the arc groove 351, the unlocking push block 342 is drivingly connected with the slider 343; the second locking spring 344 is located between the unlocking push block 342 and the slider 343, and the unlocking spring 345 is located between the slider 343 and the inner wall of the pushing groove 3311;

[0087] When the push rod 110 completes the push handle reversing operation, the sliding column 3421 slides to the distal section 34111 of the cam groove 3411, and the limiting column 3431 is located in the third limiting portion 352, thereby realizing the locking of the second joint seat 331 and the second frame 320;

[0088] When the second lock unit 220 is in the unlocked state and the handle 210 rotates in the second direction, the sliding column 3421 slides to the proximal section 34112 of the cam groove 3411, and the limiting column 3431 slides out of the third limiting portion 352, thereby unlocking the second joint seat 331 and the second frame 320.

[0089] The principle of the locking process of the second joint seat 331 and the second frame 320 is:

[0090] When the two-way reversible baby stroller is used normally, whether the handle 210 is pushed forward or backward, the distal section 34111 of the cam groove 3411 always presses against the slide post 3421 on the unlocking push block 342, and the unlocking push block 342 pushes the second locking spring 344; the second locking spring 344 pushes the slider 343, and the slider 343 compresses the unlocking spring 345. At this time, the slider 343 will slide in the arc groove 351 in a direction away from the center of the circle, and will get stuck in the third limiting portion 352 of the second reinforcing plate 350, forming a locking state;

[0091] The principle of the unlocking process of the second joint seat 331 and the second frame 320 is:

[0092] When the locking block 332 is unlocked to the second section, the handle 210 rotates in the second direction. At this time, the sliding column 3421 is located at the proximal section 34112 of the cam groove 3411, releasing the unlocking push block 342 and the second locking spring 344. At this time, the unlocking spring 345 pushes the slider 343 without resistance. At this time, the slider 343 slides into the arc groove 351 in the direction close to the center of the circle, forming an unlocking state, and the rotation and folding operation can be performed.

[0093] In some embodiments, the minimum thrust of the second locking spring 344 is greater than the maximum thrust of the unlocking spring 345. Since the minimum thrust of the second locking spring 344 is greater than the maximum thrust of the unlocking spring 345, after the second joint seat 331 and the second frame 320 are unlocked, the second reinforcing sheet 350 does not need to be deployed in sequence, and the unlocking push block 342 will not be stuck even if it is pressed down, thereby improving the reliability and stability of the device.

[0094] In some embodiments, two front wheels 311 and two rear wheels 321 are respectively disposed below the first frame 310 and the second frame 320. The first frame 310 is provided with a front brake 312 for braking the front wheels 311, and the second frame 320 is also provided with a rear brake 322 for braking the rear wheels 321. The two front wheels 311 and the two rear wheels 321 are convenient for pushing, the front brake 312 is used to brake the front wheels 311, and the rear brake 322 is used to brake the rear wheels 321. Whether pushing forward or backward, the braking operation can be conveniently and quickly performed, and the safety and reliability are higher.

[0095] The working principle of the two-way reversing baby stroller proposed in the embodiment of the present invention is:

[0096] When the pressing portion 2213 is not pressed, the wrench 222 can only be pulled out by the first section "about 5 mm". When the first section is pulled out, the handle 210 can only be rotated in the first direction and cannot be rotated in the second direction, and has a limit position.

[0097] Pulling the wrench 222 drives the lock block 332 to slide the first distance through the unlocking wire 233, and turning the push handle upward to the opposite side will automatically lock it, realizing the reversal of the handle 210. Pulling out the first section will not unlock the second joint seat 331 and the second frame 320. At this time, the front and rear feet of the platform are still locked and safe; (the forward and reverse operation methods are the same)

[0098] Press the pressing portion 2213 and hold it, then pull the wrench 222 out a second distance, the locking block 332 unlocks the second section, and the push rod 110 rotates in the second direction while unlocking the second joint seat 331 and the second frame 320 (the unlocking and locking principles of the second joint seat 331 and the second frame 320 are described above), and the push rod 110 continues to rotate, and the second frame 320 and the first frame 310 approach each other for a folding operation.

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A two-way reversible baby stroller, characterized in that: It includes a push handle assembly, two handle assemblies and a bearing assembly, wherein: The push handle assembly includes a push rod and two connecting rods, and the two connecting rods are respectively connected to two ends of the push rod; The handle assembly includes a handle, a two-way lock unit and a steering joint unit; the handle is connected to an end of the connecting rod away from the push rod; the two-way lock unit at least includes a sliding member, and the sliding member is slidably connected to the handle; the steering joint unit at least includes a first joint seat, and the first joint seat is connected to the handle; The bearing assembly comprises a first frame, a second frame and two bearing joint units, wherein the second frame is rotatably connected to the first frame; the bearing joint unit comprises a second joint seat and a locking block, wherein the two second joint seats are both connected to the first frame, the second joint seat is hinged to the first joint seat, the locking block is slidably mounted on the first joint seat, and the locking block is drivingly connected to the sliding member; The two-way lock unit has the following two states: in the locked state, the sliding member can move a first distance in the direction away from the handle, and when it is moved into place, the locking block unlocks the first section; in the unlocked state, the sliding member can continue to move a second distance in the direction away from the handle, and when it is moved into place, the locking block unlocks the second section; When the locking block is in the state of unlocking the first section, the handle and the first joint seat rotate in the first direction to perform a push handle reversal operation, and the first joint seat is limited in the second direction, and the second direction is opposite to the first direction; When the locking block is in the state of unlocking the second section, the handle rotates along the second direction, and the second frame and the first frame approach each other to perform a folding operation.

2. The two-way reversible baby stroller according to claim 1, characterized in that: The handle is provided with a first limiting portion; The sliding member comprises a sliding body, a resisting portion and a pressing portion, wherein the resisting portion and the pressing portion are respectively arranged at two ends of the sliding body, the resisting portion is used to be hooked and limited with the first limiting portion, and the pressing portion is slidably installed in the locking hole; The two-way lock unit also includes a wrench and a reset spring. The wrench is slidably mounted on the connecting rod. The outer wall of the wrench is provided with a locking hole. The interior of the wrench is hollow and the inner wall is provided with a support portion. The reset spring is located between the support portion and the pressing portion. When the two-way locking unit is in a locked state, the sliding body abuts against the inner wall of the wrench and the pressing portion extends out of the locking hole, and the abutting portion is limited by the first limiting portion; When the two-way lock unit is in an unlocked state, the pressing portion is pressed into the locking hole, and the abutting portion is no longer limited by the first limiting portion.

3. The two-way reversible baby stroller according to claim 1, characterized in that: The steering joint unit also includes a first locking spring, an unlocking wire and a locking ring. The first locking spring is compressed between the locking block and the first joint seat to straighten the unlocking wire. The two ends of the unlocking wire are respectively connected to the locking block and the sliding member; the locking ring is fixed on the second joint seat and is used to limit the position between the locking block.

4. The two-way reversible baby stroller according to claim 3, characterized in that: The locking block is provided with a protrusion; The inner ring of the lock ring is provided with a first guide portion and a second limiting portion, and the second limiting portion can limit the position of the protruding portion; When the sliding member moves a first distance in a direction away from the handle, one end of the protrusion slides to the end portion of the first guide portion close to the inner side, and the other end of the protrusion is limited by the second limiting portion.

5. The two-way reversible baby stroller according to claim 4, characterized in that: The steering joint unit further comprises a first reinforcement sheet, the first reinforcement sheet is inserted into the first joint seat, and the first reinforcement sheet is provided with an avoidance hole for avoiding the protrusion.

6. The two-way reversible baby stroller according to claim 1, characterized in that: The bearing assembly also includes a connection locking mechanism, which is connected to the second joint seat and the second frame respectively, and is used to lock the second joint seat and the second frame when the push rod completes the push handle reversing operation.

7. The two-way reversible baby stroller according to claim 6, characterized in that: The bearing assembly further includes a second reinforcing sheet, the second reinforcing sheet is fixedly connected to the second frame and hinged to the first frame, the second reinforcing sheet is provided with an arc-shaped groove, and one end of the arc-shaped groove is provided with a third limiting portion in a direction away from the center of the circle; The second joint seat is provided with a pushing groove; The connection and locking mechanism comprises a driving plate, an unlocking push block and a slider, wherein the driving plate is fixedly mounted on the first joint seat, and a cam groove is provided on the driving plate; the unlocking push block is slidably mounted in the push groove, a sliding column and a guide groove are provided on the unlocking push block, the sliding column is slidably mounted in the cam groove, the slider is slidably mounted in the guide groove, a limiting column is provided on the slider, the limiting column is slidably mounted in the arc groove, and the unlocking push block is drivingly connected to the slider; When the push rod completes the push handle reversing operation, the slide column slides to the distal section of the cam groove, and the limiting column is located in the third limiting portion, thereby realizing the locking of the second joint seat and the second frame; When the second lock unit is in the unlocked state and the handle rotates in the second direction, the slide column slides to the proximal section of the cam groove, and the limiting column slides out of the third limiting portion, thereby unlocking the second joint seat and the second frame.

8. The two-way reversible baby stroller according to claim 7, characterized in that: The connection locking mechanism further comprises a second locking spring and an unlocking spring, wherein the second locking spring is located between the unlocking push block and the slider, and the unlocking spring is located between the slider and the inner wall of the pushing groove.

9. The two-way reversible baby stroller according to claim 8, characterized in that: The minimum thrust of the second locking spring is greater than the maximum thrust of the unlocking spring.

10. The two-way reversible baby stroller according to any one of claims 1 to 9, characterized in that: Two front wheels and two rear wheels are respectively arranged below the first frame and the second frame. The first frame is provided with a front brake for braking the front wheels, and the second frame is also provided with a rear brake for braking the rear wheels.

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