Bidirectional reversing baby stroller

Abstract

The utility model provides a two-way reversing baby stroller which comprises a push handle assembly, two handle assemblies and a bearing assembly. The push handle assembly comprises a push rod and two connecting rods; the handle assembly comprises a handle, a double-lock unit and a steering joint unit. 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; the bearing joint unit comprises a second joint seat and a locking block. 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, handle pushing reversing operation is carried out, forward pushing and backward pushing can be met at the same time, steering is not needed in a narrow region, and the operation is convenient. And the pushing flexibility is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to baby stroller technical field especially relates to a bidirectional reversing baby stroller. BACKGROUND

[0002] Baby stroller, not only a practical tool, also can provide comfortable rest and play environment for baby, promote its body and intelligence development simultaneously, baby stroller needs to have the function of pushing and folding. The traditional baby stroller generally has folding function, but can only push one side, and the push handle cannot satisfy forward pushing and backward pushing at the same time, and it is troublesome to turn in the narrow space, and the pushing flexibility is not enough, and can only be folded from one direction when folding, and it is inconvenient to operate. SUMMARY

[0003] Therefore, the utility model provides a bidirectional reversing baby stroller to solve the technical problem that the push handle cannot satisfy forward pushing and backward pushing at the same time, can only push one side, it is troublesome to turn in the narrow space, and the pushing flexibility is not enough, and can only be folded from one direction when folding, and it is inconvenient to operate when storing.

[0004] The technical scheme of the utility model is realized as follows:

[0005] The utility model provides a bidirectional reversing baby stroller, including push handle assembly, two handlebar assemblies and bearing assembly, wherein:

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

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

[0008] The bearing assembly includes a first frame, a second frame and two bearing joint units, the second frame is rotatably connected with the first frame, the bearing joint unit includes a second joint seat and a lock block, the two second joint seats are connected with the first frame, the second joint seat is hinged with the first joint seat, the lock block is slidingly installed on the first joint seat, and the lock block is drivingly connected with the sliding piece;

[0009] The two-way lock unit has two states: in the locked state, the slider can move a first distance away from the handle, and when moved to the position, the lock block unlocks the first section; in the unlocked state, the slider can continue to move a second distance away from the handle, and when moved to the position, the lock block unlocks the second section;

[0010] In the state of unlocking the first section, the handle and the first joint seat are rotated in the first direction to perform the push handle reversing operation, and the first joint seat is limited in the second direction opposite to the first direction.

[0011] In the state of unlocking the second section, the handle is rotated in the second direction, and the second frame and the first frame are close to each other to perform the folding operation.

[0012] On the basis of the above technical scheme, preferably, the handle is provided with a first limiting portion.

[0013] The slider includes a sliding body, an abutting portion and a pressing portion, the abutting portion and the pressing portion are respectively arranged at two ends of the sliding body, the abutting portion is used for hanging limiting with the first limiting portion, and the pressing portion is slidingly installed in the locking hole.

[0014] The two-way lock unit further includes a wrench and a return spring, the wrench is slidingly installed on the connecting rod, an outer wall of the wrench is provided with a locking hole, the wrench is hollow inside and an inner wall thereof is provided with a supporting portion, and the return spring is located between the supporting portion and the pressing portion.

[0015] In the locked state of the two-way lock unit, the sliding body abuts against the inner wall of the wrench, the pressing portion protrudes out of the locking hole, and the abutting portion is limited by the first limiting portion.

[0016] In the unlocked state of the two-way lock unit, 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 scheme, preferably, the steering joint unit further includes a first locking spring, an unlocking pull wire and a lock ring, the first locking spring is compressed between the lock block and the first joint seat to straighten the unlocking pull wire, two ends of the unlocking pull wire are respectively connected to the lock block and the slider, and the lock ring is fixed on the second joint seat and used for limiting with the lock block.

[0018] On the basis of the above technical scheme, preferably, the lock block is provided with a protruding portion.

[0019] An 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 protruding portion.

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

[0021] On the basis of the above technical scheme, preferably, the steering joint unit further comprises a first reinforcing sheet, the first reinforcing sheet is inserted into the first joint seat, and the first reinforcing sheet is provided with an avoiding hole for avoiding the protruding part.

[0022] On the basis of the above technical scheme, preferably, the bearing assembly further comprises a connection locking mechanism, the connection locking mechanism is connected with the second joint seat and the second frame respectively, and is used for locking the second joint seat and the second frame when the push rod completes the handle reversing operation.

[0023] On the basis of the above technical scheme, preferably, the bearing assembly further comprises a second reinforcing sheet, the second reinforcing sheet is fixedly connected with the second frame and is hingedly connected with the first frame, and the second reinforcing sheet is provided with an arc-shaped groove, one end of the arc-shaped groove is provided with a third limiting part away from the center of the circle.

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

[0025] The connection locking mechanism comprises a driving plate, an unlocking push block and a sliding block, the driving plate is fixedly installed on the first joint seat, and the driving plate is provided with a cam groove; the unlocking push block is slidingly installed in the pushing groove, the unlocking push block is provided with a sliding column and a guide groove, the sliding column is slidingly installed in the cam groove, the sliding block is slidingly installed in the guide groove, the sliding block is provided with a limiting column, the limiting column is slidingly installed in the arc-shaped groove, and the unlocking push block and the sliding block are drivingly connected.

[0026] When the push rod completes the handle reversing operation, the sliding column slides to the far-center section of the cam groove, the limiting column is located in the third limiting part, and the locking of the second joint seat and the second frame is realized.

[0027] When the handle rotates in the second direction when the two-way lock unit is in the unlocking state, the sliding column slides to the near-center section of the cam groove, the limiting column slides out of the third limiting part, and the unlocking of the second joint seat and the second frame is realized.

[0028] On the basis of the above technical scheme, preferably, the connection locking mechanism further comprises a second locking spring and an unlocking spring, the second locking spring is located between the unlocking push block and the sliding block, and the unlocking spring is located between the sliding block and the inner wall of the pushing groove.

[0029] Preferably, the minimum pushing force of the second locking spring is greater than the maximum pushing force of the unlocking spring.

[0030] Preferably, two front wheels and two rear wheels are arranged below the first frame and the second frame respectively, a front brake for braking the front wheels is arranged on the first frame, and a rear brake for braking the rear wheels is arranged on the second frame.

[0031] The bidirectional reversing baby stroller and the installation method have the following beneficial effects compared with the prior art:

[0032] (1) In the locking state of the two-way lock unit, the sliding member can move a first distance away from the handlebar, and when it is moved into position, the lock block is unlocked for a first distance, the handlebar and the first joint seat are rotated in a first direction, and the push handle reversing operation is performed; the bidirectional reversing baby stroller can perform push handle reversing, and can simultaneously meet forward pushing and backward pushing, and in a small space, no turning is required, and the pushing flexibility is high;

[0033] In the unlocking state of the two-way lock unit, the sliding member can continue to move a second distance away from the handlebar, and when it is moved into position, the lock block is unlocked for a second distance, and in the state of unlocking the second distance, the handlebar is rotated in a second direction, the second frame and the first frame are close to each other for folding operation, and after reversing is completed, the handle is reversely rotated to fold, and the operation is the same when pushing forward or backward, therefore, folding can be performed in two directions, and the operation is more convenient;

[0034] (2) In the locking state of the two-way lock unit, the sliding body abuts against the inner wall of the wrench, and the pressing part protrudes from the locking hole, the sliding body can slide a first distance until the abutting part is limited by the first limiting part; in the unlocking state of the two-way lock unit, the pressing part is pressed into the locking hole, the abutting part is no longer limited by the first limiting part, and the sliding body can slide a second distance;

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

[0036] (4) when the push rod completes the push handle reversing operation, the slide post slides to the far center section of the cam groove, the limiting post is located in the third limiting part, the second joint base and the second frame are locked, and fixing during use is facilitated; when the two-way lock unit is in the unlocked state and the handle is rotated in the second direction, the slide post slides to the near center section of the cam groove, the limiting post slides out of the third limiting part, the second joint base and the second frame are unlocked, and folding operation is facilitated;

[0037] (5) by the fact that the minimum pushing force of the second locking spring is greater than the maximum pushing force of the unlocking spring, after the second joint base and the second frame are unlocked, the second reinforcing sheet can be unfolded without being in sequence, even if the unlocking push block is pressed down, the second reinforcing sheet will not be dead, and the reliability and stability of the device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0039] Figure 1 It is a structure schematic view of the bidirectional reversing baby stroller in the embodiments of the present application.

[0040] Figure 2 It is an exploded view of the bidirectional reversing baby stroller in the embodiments of the present application.

[0041] Figure 3 It is a structure schematic view of the bidirectional reversing baby stroller in the embodiments of the present application. Figure 1 It is a partial sectional view of the A part in the bidirectional reversing baby stroller in the embodiments of the present application.

[0042] Figure 4 It is an exploded view of the handle assembly in the embodiments of the present application.

[0043] Figure 5 It is a structure schematic view of the lock ring in the embodiments of the present application.

[0044] Figure 6 It is a structure schematic view of the turning joint unit in the embodiments of the present application.

[0045] Figure 7 It is a structure schematic view of the first frame and the second frame in the embodiments of the present application.

[0046] Figure 8 It is a structure schematic view of the second frame and the second reinforcing sheet in the embodiments of the present application.

[0047] Figure 9 It is the installation schematic view of the connecting locking mechanism and the second joint seat in the embodiment of the utility model;

[0048] Figure 10 It is the structure schematic view of the second joint seat in the embodiment of the utility model;

[0049] Figure 11 It is the structure schematic view of the driving plate in the embodiment of the utility model;

[0050] Figure 12 It is the structure schematic view of the connecting locking mechanism in the embodiment of the utility model;

[0051] Figure 13 It is the connection schematic view of the second reinforcing sheet and the slide column in the embodiment of the utility model;

[0052] Figure 14 It is the structure schematic view of the bidirectional reversing baby stroller after completing the push handle reversing operation in the embodiment of the utility model;

[0053] Figure 15 It is the structure schematic view of the bidirectional reversing baby stroller in the folded state in the embodiment of the utility model.

[0054] Mark explanation: 100-push handle assembly, 200-hand handle assembly, 300-bearing assembly;

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

[0056] 210-hand handle, 211-first limiting part;

[0057] 220-two-way lock unit, 221-sliding part, 2211-sliding body, 2212-abutment, 2213-pressing part, 2214-receiving groove, 222-wrench, 2221-locking hole, 2222-supporting part, 223-return spring;

[0058] 230-reversing joint unit, 231-first joint seat, 232-first locking spring, 233-unlocking pull wire, 234-lock 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-lock block, 3321-protruding part;

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

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

[0064] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0065] Referring to Figures 1-15 The utility model discloses an embodiment, propose a two-way reversing baby stroller, including push handle assembly 100, two hand handle assembly 200 and 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 the two ends of the push rod 110.

[0067] The hand 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 the end of the connecting rod 120 away from the push rod 110, the two-way lock unit 220 includes at least a sliding member 221, the sliding member 221 is slidingly connected to the handle 210, and the steering joint unit 230 includes at least 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, 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 lock block 332, the two second joint seats 331 are connected to the first frame 310, the second joint seat 331 is hingedly connected to the first joint seat 231, the lock block 332 is slidingly installed on the first joint seat 231, and the lock 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 slider 221 can be moved away from the handle 210 by a first distance, and when moved to the position, the lock block 332 unlocks the first section; in the unlocked state, the slider 221 can continue to move away from the handle 210 by a second distance, and when moved to the position, the lock block 332 unlocks the second section;

[0070] In the state of unlocking the first section, the handle 210 and the first joint seat 231 are rotated in the first direction to perform the push handle reversing operation, and the first joint seat 231 is limited in the second direction opposite to the first direction; here, the first direction refers to the opposite rotation direction of the push rod 110, and is not only one of the clockwise or counterclockwise directions, for example, the forward pushing operation can be changed to the backward pushing operation, and the backward pushing operation can be changed to the forward pushing operation, and the rotation directions of the two reversing operations are both the first direction, but the rotation directions are different, so that the bidirectional reversing operation can be realized.

[0071] In the state of unlocking the second section, the handle 210 is rotated in the second direction, and the second frame 320 and the first frame 310 are close to each other to perform the folding operation.

[0072] The bidirectional reversing baby stroller provided in the embodiment can realize the push handle reversing operation, and can simultaneously satisfy the forward pushing operation and the backward pushing operation, so that the pushing flexibility is high without turning in a small space.

[0073] In the unlocked state of the two-way lock unit 220, the slider 221 can continue to move away from the handle 210 by a second distance, and when moved to the position, the lock block 332 unlocks the second section, and in the state of unlocking the second section, the handle 210 is rotated in the second direction, and the second frame 320 and the first frame 310 are close to each other to perform the folding operation, so that the folding operation can be performed in two directions after the reversing operation is completed, and the operation is more convenient.

[0074] In some embodiments, the double-lock unit 220 further comprises a wrench 222 and a reset spring 223, the wrench 222 is slidingly installed on the connecting rod 120, the outer wall of the wrench 222 is provided with a locking hole, the inside of the wrench 222 is hollow and the inner wall is provided with a supporting part 2222; the sliding part 221 slides between the first limiting part 211 and the end of the inner wall of the wrench 222, and the first limiting part 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 part 211;

[0076] The sliding part 221 comprises a sliding body 2211, an abutting part 2212 and a pressing part 2213, the abutting part 2212 and the pressing part 2213 are respectively arranged at both ends of the sliding body 2211, the abutting part 2212 is formed by protruding in the opposite direction of the force direction of the sliding body 2211 to the pressing part 2213, the inner wall of the pressing part 2213 is excavated with a containing groove 2214, the abutting part 2212 is used for limiting with the first limiting part 211, the maximum distance of the abutting part 2212 to the first limiting part 211 is 5mm (i.e. the first distance), and the pressing part 2213 is slidingly installed in the locking hole;

[0077] The reset spring 223 is located between the supporting part 2222 and the pressing part 2213, the reset spring 223 is placed in the containing groove 2214, the containing groove 2214 forms a guide, so that the pressing force of the pressing part 2213 and the elastic force of the reset spring 223 are located on the same straight line;

[0078] In the locked state of the double-lock unit 220, the sliding body 2211 abuts against the inner wall of the wrench 222 and the pressing part 2213 protrudes out of the locking hole, and the abutting part 2212 is limited by the first limiting part 211; in the case that the pressing part 2213 is not subjected to external force, the sliding body 2211 abuts against the inner wall of the wrench 222 due to the elastic force of the reset spring 223, the pressing part 2213 protrudes out of the locking hole, at this time, the abutting part 2212 is limited by the first limiting part 211, and the maximum moving distance of the sliding body 2211 is the first distance (5mm);

[0079] In the unlocked state of the double-lock unit 220, the pressing part 2213 is pressed into the locking hole, and the abutting part 2212 is no longer limited by the first limiting part 211. By applying external force to press the pressing part 2213 into the locking hole, the abutting part 2212 is lowered, at this time, the pressing part 2213 and the locking hole maintain a nesting relationship, so that the double-lock unit 220 is unlocked, the first limiting part 211 no longer limits the abutting part 2212, and the sliding body 2211 can continue to move a second distance (5mm).

[0080] In some embodiments, the turning joint unit 230 further comprises a first locking spring 232 compressed between the lock block 332 and the first joint seat 231 to straighten the unlocking pull wire 233, the unlocking pull wire 233 having two ends respectively connected to the lock block 332 and the sliding piece 221; and a lock ring 234 fixed on the second joint seat 331 for limiting with the lock block 332. When the sliding piece 221 is not subjected to external force, the pushing force of the first locking spring 232 makes the lock block 332 have a tendency to move away from the wrench 222, and the unlocking pull wire 233 is straightened. When the external force received by the sliding piece 221 is greater than the pushing force of the first locking spring 232, the sliding piece 221 can move. When the received external force disappears, the sliding piece 221 is automatically reset.

[0081] In some embodiments, the lock block 332 is provided with a protruding portion 3321; the inner ring of the lock ring 234 is provided with a first guide portion 2341 and a second limiting portion 2432, the second limiting portion 2432 can limit the protruding portion 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 piece 221 moves a first distance away from the handlebar 210, one end of the protruding portion 3321 slides to the end of the first guide portion 2341 close to the inner side, and the other end of the protruding portion 3321 is limited by the second limiting portion 2432, so that the protruding portion 3321 can only rotate in the first direction and is limited in the second direction, thereby making the first joint seat 231 and the sliding piece 221 only rotate in the first direction and be limited in the second direction; in the second state of unlocking of the lock block 332, the protruding portion 3321 slides to a position close to the center of the second joint seat 331, and the protruding portion 3321 is no longer limited by the second limiting portion 2432, so that the sliding piece 221 and the second joint seat 331 can rotate in the second direction to realize the folding operation.

[0082] In some embodiments, the turning joint unit 230 further comprises a first reinforcing sheet 235 inserted into and fixed in the first joint seat 231, the first reinforcing sheet 235 being provided with an avoiding hole 2351 for avoiding the protruding portion 3321, the protruding portion 3321 being located in the avoiding hole 2351 and being able to slide along the avoiding hole 2351, the length direction of the avoiding hole 2351 being parallel to the diameter direction of the first joint seat 231, and the avoiding hole 2351 also guiding the sliding of the protruding portion 3321.

[0083] In some embodiments, the bearing assembly 300 further comprises a connection locking mechanism 340 connected with the second joint seat 331 and the second frame 320 respectively, for locking the second joint seat 331 and the second frame 320 when the push rod 110 completes the push handle reversing operation. By locking the second joint seat 331 and the second frame 320 through the connection locking mechanism 340 when the push rod 110 completes the push handle reversing operation, the second joint seat 331 and the second frame 320 can be fixed during use, and will not be folded during pushing, thereby improving the reliability and stability of the device.

[0084] In some embodiments, the bearing assembly 300 further comprises a second reinforcing sheet 350 fixedly connected with the second frame 320 and hingedly connected with the first frame 310, wherein the second reinforcing sheet 350 is provided with an arc-shaped slot 351, and one end of the arc-shaped slot 351 is provided with a third limiting portion 352 away from the center of the circle;

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

[0086] The connection locking mechanism 340 comprises a driving plate 341, an unlocking push block 342, a sliding block 343, a second locking spring 344, and an unlocking spring 345. The driving plate 341 is fixedly installed on the first joint seat 231, and is provided with a cam slot 3411 comprising a far-center segment 34111 and a near-center segment 34112. The far-center segment 34111 is a circular arc with a larger radius, and the near-center segment 34112 is a circular arc with a smaller radius. The far-center segment 34111 and the near-center segment 34112 are smoothly connected. The unlocking push block 342 is slidingly installed in the pushing slot 3311, and is provided with a sliding column 3421 and a guide slot 3422. The sliding column 3421 is slidingly installed in the cam slot 3411, and the sliding block 343 is slidingly installed in the guide slot 3422. The sliding block 343 is provided with a limiting column 3431 slidingly installed in the arc-shaped slot 351. The unlocking push block 342 is drivingly connected with the sliding block 343. The second locking spring 344 is located between the unlocking push block 342 and the sliding block 343, and the unlocking spring 345 is located between the sliding block 343 and the inner wall of the pushing slot 3311.

[0087] When the push rod 110 completes the push handle reversing operation, the sliding column 3421 slides to the far-center segment 34111 of the cam slot 3411, and the limiting column 3431 is located in the third limiting portion 352, thereby achieving the locking of the second joint seat 331 and the second frame 320.

[0088] When the handle 210 is rotated in the second direction when the two-way locking unit 220 is in the unlocked state, the slide column 3421 slides to the near-center section 34112 of the cam groove 3411, and the limiting column 3431 slides out of the third limiting part 352, thereby achieving the unlocking of the second joint base 331 and the second frame 320.

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

[0090] When the two-way reversing stroller is used normally, the handle 210 is pushed forward or backward, and at this time, the far-center section 34111 of the cam groove 3411 always pushes against the slide column 3421 on the unlocking push block 342, the unlocking push block 342 pushes the second locking spring 344, the second locking spring 344 pushes the slide block 343, the slide block 343 compresses the unlocking spring 345, at this time, the slide block 343 slides in the arc-shaped groove 351 in a direction away from the center of the circle, and is clamped by the third limiting part 352 of the second reinforcing piece 350, thereby forming the locking.

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

[0092] When the locking block 332 is unlocked to the second section, the handle 210 is rotated in the second direction, at this time, the slide column 3421 is located in the near-center section 34112 of the cam groove 3411, the unlocking push block 342 and the second locking spring 344 are released, at this time, the unlocking spring 345 pushes the slide block 343 without resistance, at this time, the slide block 343 slides in the arc-shaped groove 351 in a direction close to the center of the circle, thereby forming the unlocking and enabling the rotating folding operation.

[0093] In some embodiments, the minimum pushing force of the second locking spring 344 is greater than the maximum pushing force of the unlocking spring 345. By the minimum pushing force of the second locking spring 344 being greater than the maximum pushing force of the unlocking spring 345, after the second joint base 331 and the second frame 320 are unlocked, the second reinforcing piece 350 can be unfolded without being pressed in sequence, even if the unlocking push block 342 is pressed, the state will not be dead, thereby improving the reliability and stability of the device.

[0094] In some embodiments, two front wheels 311 and two rear wheels 321 are respectively arranged below the first frame 310 and the second frame 320, a front brake 312 for braking the front wheels 311 is arranged on the first frame 310, and a rear brake 322 for braking the rear wheels 321 is arranged on the second frame 320. The two front wheels 311 and the two rear wheels 321 facilitate the pushing operation, the front brake 312 is used to brake the front wheels 311, the rear brake 322 is used to brake the rear wheels 321, and no matter whether the pushing operation is forward or backward, the brake operation can be conveniently and quickly performed, and the safety and reliability are higher.

[0095] The working principle of the bidirectional reversing baby stroller is provided by the embodiment of the utility model:

[0096] When the pressing portion 2213 is not pressed, the wrench 222 can only be pulled out by a first section "about 5mm", and 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 is limited;

[0097] Pulling the wrench 222 drives the lock block 332 to slide by a first section of distance through the unlocking pull line 233, and the push handle is automatically locked after being rotated upward to the opposite side, realizing the reversing of the handle 210, and the first section is pulled out without unlocking the second joint seat 331 and the second frame 320, so that the front and rear legs of the stroller are still locked and safe at this time;

[0098] Pressing the pressing portion 2213 and keeping, and then pulling the wrench 222 by a second section of distance, the lock block 332 is unlocked by a second section, the push rod 110 is rotated 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 second frame 320 and the first frame 310 are folded by being close to each other by continuously rotating the push rod 110.

[0099] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A reversible stroller, characterized in that, The application relates to a two-way lock unit of a folding stroller, which comprises a push handle assembly, two handle assemblies and a bearing assembly, wherein: the push handle assembly comprises a push rod and two connecting rods, and the two connecting rods are connected with two ends of the push rod respectively; the handle assembly comprises a handle, a two-way 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-way lock unit comprises at least a sliding part which is slidingly connected with the handle, and the steering joint unit comprises at least a first joint seat which is connected with the handle; the bearing assembly comprises a first frame, a second frame and two bearing joint units, the second frame is rotationally connected with the first frame, the bearing joint unit comprises a second joint seat and a lock block, the two second joint seats are connected with the first frame, the second joint seat is hinged with the first joint seat, the lock block is slidingly installed on the first joint seat, and the lock block is drivingly connected with the sliding part; the two-way lock unit has the following two states: in the locked state, the sliding part can move in the direction away from the handle by a first distance, and when the sliding part is moved to the position, the lock block is unlocked by the first distance; in the unlocked state, the sliding part can continue to move in the direction away from the handle by a second distance, and when the sliding part is moved to the position, the lock block is unlocked by the second distance; in the state of unlocking the first distance, the handle and the first joint seat are rotated in the first direction to perform the push handle reversing operation, and the first joint seat is limited in the second direction which is opposite to the first direction; in the state of unlocking the second distance, the handle is rotated in the second direction, and the second frame and the first frame are close to each other to perform the folding operation.

2. The reversible stroller of claim 1, wherein, a first limiting part is arranged on the handle, the two-way lock unit further comprises a wrench and a return spring; the sliding part comprises a sliding body, an abutting part and a pressing part, the abutting part and the pressing part are arranged at two ends of the sliding body respectively, the abutting part is used for limiting the first limiting part, an outer wall of the wrench is provided with a locking hole, and the pressing part is slidingly installed in the locking hole; the wrench is slidingly installed on the connecting rod, the wrench is internally hollow and an inner wall of the wrench is provided with a supporting part, and the return spring is located between the supporting part and the pressing part; in the locked state of the two-way lock unit, the sliding body abuts against the inner wall of the wrench, the pressing part extends out of the locking hole, and the abutting part is limited by the first limiting part; in the unlocked state of the two-way lock unit, the pressing part is pressed into the locking hole, and the abutting part is no longer limited by the first limiting part.

3. The reversible stroller of claim 1, wherein, the steering joint unit further comprises a first locking spring, an unlocking pull wire and a lock ring, the first locking spring is compressed between the lock block and the first joint seat to straighten the unlocking pull wire, two ends of the unlocking pull wire are connected with the lock block and the sliding part respectively, and the lock ring is fixed on the second joint seat and is used for limiting the lock block.

4. The reversible stroller of claim 3, wherein, a protruding part is arranged on the lock block; an inner ring of the lock ring is provided with a first guide part and a second limiting part, and the second limiting part can limit the protruding part. When the sliding piece moves a first distance away from the handlebar, one end of the protruding part slides to the end of the first guide part close to the inner side, and the other end of the protruding part is limited by the second limiting part.

5. The reversible stroller of claim 4, wherein, The turning joint unit further comprises a first reinforcing sheet, which is inserted into the first joint seat, and the first reinforcing sheet is provided with a avoiding hole for avoiding the protruding part.

6. The reversible stroller of claim 1, wherein, The bearing assembly further comprises a connection locking mechanism, which is connected with the second joint seat and the second frame respectively, and is used for locking the second joint seat and the second frame when the push rod completes the handlebar reversing operation.

7. The reversible stroller of claim 6, wherein, The bearing assembly further comprises a second reinforcing sheet, which is fixedly connected with the second frame and hingedly connected with the first frame, and the second reinforcing sheet is provided with an arc-shaped slot, one end of the arc-shaped slot is provided with a third limiting part away from the center of the circle; The second joint seat is provided with a pushing groove; The connection locking mechanism comprises a driving plate, an unlocking push block and a sliding block, the driving plate is fixedly installed on the first joint seat, and the driving plate is provided with a cam groove; the unlocking push block is slidingly installed in the pushing groove, the unlocking push block is provided with a sliding column and a guide groove, the sliding column is slidingly installed in the cam groove, the sliding block is slidingly installed in the guide groove, the sliding block is provided with a limiting column, the limiting column is slidingly installed in the arc-shaped slot, and the unlocking push block and the sliding block are drivingly connected; When the push rod completes the handlebar reversing operation, the sliding column slides to the far center section of the cam groove, the limiting column is located in the third limiting part, and the second joint seat and the second frame are locked; When the two-way lock unit is in the unlocking state and the handlebar is rotated in the second direction, the sliding column slides to the near center section of the cam groove, the limiting column slides out of the third limiting part, and the second joint seat and the second frame are unlocked.

8. The reversible stroller of claim 7, wherein, The connection locking mechanism further comprises a second locking spring and an unlocking spring, the second locking spring is located between the unlocking push block and the sliding block, and the unlocking spring is located between the sliding block and the inner wall of the pushing groove.

9. The reversible stroller of claim 8, wherein, The minimum pushing force of the second locking spring is greater than the maximum pushing force of the unlocking spring.

10. A reversible pram according to any one of claims 1 to 9, wherein, The first frame and the second frame are respectively provided with two front wheels and two rear wheels below, the first frame is provided with a front brake for braking the front wheels, and the second frame is provided with a rear brake for braking the rear wheels.

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