High-safety multifunctional child stroller

Abstract

The utility model discloses a high safety multifunctional children's pushchair, including carrier, frame, swing mechanism and push handle, swing mechanism sets up between the carrier front part and frame, and the upper end of swing mechanism is connected with the carrier pin, and the lower end is connected with the frame pin, drive shaft rotation sets up on the frame, and drive wheel is coaxially fixedly connected with drive shaft, and the carrier is the casing structure, and the top of carrier is concave and forms the horizontal through slot, and the horizontal through slot is fixedly connected with the middle rib along the longitudinal center line of carrier, the pushchair still includes positioning mechanism, is used for the limiting fixing of carrier when in flat mode or when the child gets on and gets off, and the utility model discloses based on the design of positioning mechanism and high safety carrier, improves the riding safety of multifunctional children's pushchair.

Description

Technical Field

[0001] This utility model belongs to the field of children's vehicle technology, specifically relating to a highly safe and multifunctional children's stroller. Background Technology

[0002] The multi-functional stroller can make a wave-like motion when pushed, making it fun and exciting for children sitting in it, and increasing their enjoyment of playing.

[0003] A multi-functional stroller is currently available, as described in patent publication CN101492066A. This multi-functional stroller has two modes: flat walking and rocking. In rocking mode, pushing the handle rotates the rear drive wheel, which in turn rotates the drive shaft that is tightly connected to it. The drive shaft then rotates the drive gear, which in turn rotates the driven gear through the idler gear, causing the crank shaft and crank to rotate synchronously. The crank, through a connecting rod, causes the carrier body to undulate. Combined with the action of the front rocking mechanism, the carrier body oscillates back and forth, ultimately resulting in a regular up-and-down and back-and-forth oscillation motion. In flat walking mode, axially moving the idler gear frame, opening the idler gear frame, or operating the clutch mechanism disengages the transmission mechanism. In this mode, pushing the handle does not move the carrier body.

[0004] However, when the above-mentioned multi-functional stroller is moving on a flat surface, the position of the bend is not fixed. When a child sits on the stroller, the seat on the carrier will suddenly drop. In addition, the stability of the seat is not high during the push. Furthermore, the carrier on which the child sits directly is only the basic structure, which has very low safety. Utility Model Content

[0005] In view of this, the present invention provides a high-safety multi-functional children's stroller, which improves the riding safety of the multi-functional children's stroller based on the design of a positioning mechanism and a high-safety load-bearing body.

[0006] This utility model is achieved through the following technical solution:

[0007] A highly safe and multifunctional children's stroller includes a carrier, a frame, a rocking mechanism, and a push handle; the rocking mechanism is located between the front of the carrier and the frame, with its upper end pinned to the carrier and its lower end pinned to the frame; a drive shaft is rotatably mounted on the frame, and the drive wheel is coaxially and fixedly connected to the drive shaft.

[0008] The support body is a shell structure; the top of the support body is recessed to form a transverse through groove, and a central rib is fixedly connected in the transverse through groove along the longitudinal centerline of the support body.

[0009] The trolley also includes a positioning mechanism, which comprises a driven wheel, a housing, a spring, a sliding sleeve I, and a lever;

[0010] Sleeve I is coaxially sleeved on the crankshaft and adjacent to the driven wheel; spring is coaxially positioned on the side of sleeve I away from the driven wheel and abuts against sleeve I;

[0011] The housing is provided with a sliding groove, which is arranged axially along the crankshaft; the sliding sleeve I is provided with a slider, which is located inside the sliding groove;

[0012] The housing has a through hole, through which the lever passes. The part of the lever inside the housing is hinged to the housing. The lever also has a protrusion I and a groove I on the sliding sleeve I. The protrusion I and the groove I are connected in a mating manner. The through hole has a locking groove.

[0013] When the multi-functional stroller is rocking, the lever is in the locking groove, the spring is compressed, and the sliding sleeve I is disengaged from the driven wheel.

[0014] When the carrier of the multi-functional children's stroller is positioned, the lever disengages from the locking groove, and the lever can rotate along the hinge point. Under the action of the spring force, the sliding sleeve I engages with the driven wheel.

[0015] Furthermore, the front end of the central rib is integrally formed with the front wall of the transverse through groove, the bottom end is integrally formed with the bottom of the transverse through groove, and the rear end is integrally formed with the rear wall of the transverse through groove.

[0016] Furthermore, a seat is provided on the carrier, and a boss is provided on the top surface of the seat. The boss is located at the front end of the top surface of the seat or along the edge of the seat.

[0017] Furthermore, the bottom portion of the transverse through groove located on both sides of the central rib forms two pedals, and a connecting plate is fixedly connected between the two pedals.

[0018] Furthermore, the width of the central rib gradually decreases from bottom to top.

[0019] Furthermore, the top surface of the central rib is curved, and the center line of the curved surface is an arc-shaped center line. A seat is installed on the carrier, which is located on the top of the carrier and behind the transverse through groove. The lowest point of the arc-shaped center line is lower than the height of the top surface of the seat.

[0020] Furthermore, a mounting hole is provided at the top front end of the central rib, and the handrail is installed in the mounting hole.

[0021] Furthermore, a limiting boss is provided on the driven wheel, and a limiting groove is provided on the sliding sleeve I. When the limiting groove and the limiting boss are engaged, the seat is horizontal.

[0022] Furthermore, the through hole includes a first hole segment and a second hole segment that are connected. The height of the second hole segment is greater than the height of the first hole segment, so that a corner is formed between the first hole segment and the second hole segment. A protrusion III extending towards the end of the second hole segment is provided at the corner. The protrusion III and the sidewall of the adjacent second hole segment form the aforementioned locking groove.

[0023] Furthermore, a drive wheel and a sliding sleeve II are coaxially mounted on the drive shaft;

[0024] A guide block is fixedly installed on the drive shaft, and a guide groove I is provided on the inner circumference of the sliding sleeve II. The guide block is located in the guide groove I, so that the sliding sleeve II can slide along the drive shaft.

[0025] The driving wheel and the driven wheel are driven by a transmission mechanism. The driving wheel is rotatably connected to the drive shaft. The end of the driving wheel facing the sliding sleeve II is provided with several guide bosses distributed along the circumference. The end of the sliding sleeve II facing the driving gear is provided with several guide grooves II distributed along the circumference. The length direction of the guide bosses and the guide grooves II are both along the axial direction. The guide bosses and the guide grooves II can be matched one-to-one.

[0026] The lever has a protrusion II in the middle, and protrusion II is located on the side of the hinge point opposite to protrusion I; the sliding sleeve II has a groove II; protrusion II and groove II cooperate.

[0027] When the multi-functional stroller is rocking, the guide groove II of the slide sleeve II engages with the guide boss;

[0028] When the multi-functional stroller is in a horizontal position, the sliding sleeve II moves away from the drive wheel, and the guide boss disengages from the guide groove II.

[0029] Beneficial effects:

[0030] (1) The present invention provides a high-safety multi-functional stroller that improves the safety of the stroller from two dimensions: stability and strength of the carrier. On the one hand, the overall rigidity and impact resistance of the carrier are greatly improved by the setting of the central rib; and when the child is riding, his / her legs are separated on both sides by the central rib, and cannot be brought together or crossed, which effectively limits his / her twisting range and reduces some sudden dangerous behaviors. On the other hand, a positioning mechanism is provided, which can limit and fix the carrier in the flat walking mode or when the child gets on and off the stroller to ensure the stability of the carrier.

[0031] (2) The central rib of this utility model can be integrally formed with the transverse through groove, which further reduces the stress concentration at the connection, facilitates processing, and improves safety.

[0032] (3) A connecting plate is fixedly connected between the two pedals of this utility model, which further improves the strength of the load-bearing body and thus improves the safety of the trolley.

[0033] (4) The width of the ribs in this utility model gradually decreases from bottom to top, which improves the strength of the load-bearing body and the comfort of children riding.

[0034] (5) The top surface of the rib in this utility model is curved, and the lowest point of the arc center line is lower than the height of the top surface of the seat, which improves the comfort of children riding.

[0035] (6) The front end of the middle rib of this utility model is provided with a handrail. The handrail is placed on the middle rib, which is closer to the seat and makes it easier for children to hold it.

[0036] (7) The top surface of the seat of this utility model is provided with a protrusion. The protrusion is provided at the front end of the top surface of the seat or along the edge of the seat to ensure that the child does not slide forward when the multi-functional stroller is rocked, so as to improve the safety of the stroller.

[0037] (8) When the limiting groove and the limiting boss are engaged, the seat is horizontal, which can ensure that the seat is positioned in a horizontal position to ensure the comfort of children.

[0038] (9) When it is necessary to release the seat positioning, the lever only needs to be moved away from the locking groove and made parallel to the first hole section. The lever will automatically enter the first hole section under the action of the spring. When it is necessary to position the seat, the lever only needs to be moved to the position of the second hole section parallel to the locking groove. The lever will automatically enter the locking groove under the action of the spring, which is convenient for adults to adjust the seat position.

[0039] (10) The present invention provides a multi-functional children's stroller with a protrusion II in the middle of the lever and a drive wheel and a sliding sleeve II coaxially arranged on the drive shaft; so that moving the lever can simultaneously realize the positioning of the seat and release the transmission of the drive wheel and the driven wheel, and moving the lever can also simultaneously realize the release of the seat positioning and restore the transmission of the drive wheel and the driven wheel, which facilitates the switching of the multi-functional children's stroller rocking mode and flat walking mode. Attached Figure Description

[0040] Figure 1 This is a side view of a highly safe and multifunctional children's stroller;

[0041] Figure 2 This is a diagram of the internal structure of a highly safe and multifunctional children's stroller;

[0042] Figure 3 This is a structural diagram of the horizontal positioning mechanism;

[0043] Figure 4 This is a schematic diagram of the shell structure;

[0044] Figure 5 It is a three-dimensional carrier Figure I ;

[0045] Figure 6 It is a three-dimensional carrier Figure II ;

[0046] Figure 7 This is a side view of the carrier.

[0047] Figure 8 This is a top view of the support structure;

[0048] Figure 9 This is a structural diagram of the driven gear;

[0049] Figure 10 This is a structural diagram of sliding sleeve I;

[0050] Figure 11 This is a structural diagram of a through hole;

[0051] Figure 12 This is the front view of the lever;

[0052] Figure 13 This is the left view of the lever;

[0053] Figure 14 It is the structure of sliding sleeve II Figure I ;

[0054] Figure 15 It is the structure of sliding sleeve II Figure II ;

[0055] Figure 16 This is an example diagram of a drive shaft and a drive wheel.

[0056] Among them, 1-crankshaft, 2-spring, 3-sliding sleeve I, 31-limiting groove, 32-slider, 33-groove I, 4-driven wheel, 41-limiting boss, 5-crank, 6-transmission mechanism, 7-drive wheel, 8-lever, 81-protrusion I, 82-pin hole, 83-handle, 84-protrusion II, 9-drive wheel, 10-pin, 11-limiting component, 12-sliding groove, 13-fixed seat, 14-drive shaft, 15-through hole, 151-protrusion III, 152-locking groove, 16-sliding sleeve II, 161-guide groove I, 162-guide groove II, 163-groove II, 17-housing, 18-guide block, 19-guide boss;

[0057] 20-Bearing body, 201-Central rib, 2011-Mounting hole, 2012-Curved surface, 2013-Arc-shaped center line, 2014-Lowest point, 203-Pedal, 204-Boss, 205-Connecting plate;

[0058] 21-Backrest, 22-Guardrail, 23-Armrest, 24-Swing mechanism, 25-Frame, 26-Buffer spring, 27-Push handle, 28-Seat. Detailed Implementation

[0059] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0060] Example 1:

[0061] This embodiment provides a highly safe, multifunctional child stroller; see appendix. Figure 1-4 It includes a positioning mechanism, a load-bearing body 20, a frame 25, a swing mechanism 24, and a push handle 27;

[0062] The swing mechanism 24 is located between the front of the carrier 20 and the frame 25. The upper end of the swing mechanism 24 is pinned to the carrier 20 and the lower end is pinned to the frame 25. The drive shaft 14 is rotatably mounted on the frame 25, and the drive wheel 9 is coaxially and fixedly connected to the drive shaft 14.

[0063] The support body 20 is a shell structure; the top of the support body 20 is recessed to form a transverse through groove, and a central rib 201 is fixedly connected in the transverse through groove along the longitudinal center line of the support body 20.

[0064] The positioning mechanism is used to position the carrier 20. The positioning mechanism includes a housing 17, a spring 2, a sliding sleeve I3, and a lever 8.

[0065] Sleeve I3 is coaxially sleeved on crankshaft 1 and adjacent to driven wheel 4; spring 2 is coaxially limited on the side of sleeve I3 away from driven wheel 4 and abuts against sleeve I3;

[0066] The housing 17 is provided with a slide groove 12, which is arranged along the axial direction of the crankshaft 1; the slide sleeve I3 is provided with a slider 32, which is located in the slide groove 12.

[0067] The housing 17 is provided with a through hole 15, and the lever 8 is provided through the through hole 15. The part of the lever 8 located inside the housing 17 is hinged to the housing 17. The lever 8 is also provided with a protrusion I 81, and the sliding sleeve I 3 is provided with a groove I 33. The protrusion I 81 and the groove I 33 are connected in a cooperative manner. The through hole 15 is provided with a locking groove 152.

[0068] When the multi-functional stroller is rocking, the lever 8 is located in the locking groove 152, the spring 2 is under pressure, and the sliding sleeve I3 is disengaged from the driven wheel 4.

[0069] When the seat of the multi-functional stroller is positioned, the lever 8 disengages from the locking groove 152, and the lever 8 can rotate along the hinge point. Under the action of the spring force of the spring 2, the sliding sleeve I3 engages with the driven wheel 4 in a concave-convex fit.

[0070] This embodiment provides a high-safety multi-functional stroller that improves the stroller's safety from two dimensions: stability and strength of the carrier. On the one hand, in dynamic mode, the carrier frequently bears alternating loads from undulating movements, requiring high strength from the carrier. The central rib significantly improves the overall rigidity and impact resistance of the carrier. Furthermore, when a child is riding, their legs are separated to both sides by the central rib, preventing them from closing or crossing their legs, effectively limiting their range of motion and reducing some sudden dangerous behaviors. On the other hand, a positioning mechanism is provided to limit and fix the carrier in flat walking mode or when the child gets on or off, ensuring the stability of the carrier.

[0071] Furthermore, the front end of the central rib 201 is fixedly connected to the front wall of the transverse through groove, the bottom end is fixedly connected to the bottom of the transverse through groove, and the rear end is fixedly connected to the rear wall of the transverse through groove; the central rib 201 can be fastened to the transverse through groove, or it can be integrally formed.

[0072] See appendix Figure 5 The bottom part of the transverse through groove located on both sides of the middle rib 201 forms two pedals 203. The pedals 203 are provided with anti-slip texture to improve the comfort and safety of children riding.

[0073] For further details, please see the appendix. Figure 6 A connecting plate 205 is fixedly connected between the two pedals 203 to further improve the strength of the load-bearing body and thus improve the safety of the trolley.

[0074] See appendix Figure 5 , 7 The top surface of the middle rib 201 is curved 2012, and the center line of the curved surface 2012 is an arc-shaped center line 2013. A seat 28 is provided on the support body 20. The seat 28 is located on the top of the support body 20 and behind the transverse through groove. The lowest point 2014 of the arc-shaped center line 2013 is lower than the height of the top surface of the seat 28. The transverse width of the middle rib 201 gradually decreases from bottom to top. All of these features can improve the comfort of children riding in the seat.

[0075] The front top of the central rib 201 is provided with a mounting hole 2011, and the armrest 23 is installed in the mounting hole 2011. The armrest 23 is placed on the central rib 201, closer to the seat, making it easier for children to hold on.

[0076] The top surface of the seat 28 is provided with a protrusion 204. The protrusion 204 can be set at the front end of the top surface of the seat 28 or along the edge of the seat 28 to ensure that the child does not slide forward when the multi-functional stroller is rocked, thereby improving the safety of the stroller.

[0077] A buffer spring 26 is installed between the carrier 20 and the frame 25 to cushion the descent of the carrier 20. The seat 28 is also equipped with a guardrail 23 and a backrest 21 to improve the safety of the stroller.

[0078] Furthermore, the driven wheel 4 may be provided with one or more upper limit bosses 41, and the sliding sleeve I3 may be provided with one or more upper limit grooves 31; or the driven gear may be provided with one or more upper limit grooves 31, and the sliding sleeve I3 may be provided with one or more upper limit bosses 41; so that the seat can be positioned in several positions during the rocking process.

[0079] In one specific embodiment, see Appendix Figure 9 and 10 The driven wheel 4 is provided with a limiting boss 41, and the sliding sleeve I3 is provided with a limiting groove 31; this allows the seat to be positioned only at specific locations during rocking. Furthermore, when the limiting groove 31 and the limiting boss 41 cooperate under the action of the spring 2, the seat is horizontal. This ensures that the seat is positioned in a horizontal position to guarantee the comfort of the child.

[0080] In addition, the seat can be positioned at other angles.

[0081] In addition, a limiting groove 31 can be provided on the driven wheel 4, and a limiting boss 41 can be provided on the sliding sleeve I3.

[0082] The groove I33 can be an annular groove coaxial with the sliding sleeve I3, or it can be a coaxial arc groove, a circular groove extending radially, a square groove, or other polygonal grooves.

[0083] A limiting member 11 is also coaxially fixedly connected to the crankshaft 1. One end of the spring 2 abuts against the limiting member 11, and the other end abuts against the sliding sleeve I3. The limiting member 11 can be connected to the crankshaft 1 by screws, bolts, snap-fit, or rotation. In addition, the end of the spring 2 that is opposite to the sliding sleeve I3 can also directly abut against the inner wall of the housing 17.

[0084] See appendix Figure 11 The through hole 15 includes a first hole segment and a second hole segment that are connected. The height of the second hole segment is greater than the height of the first hole segment, so that a corner is formed between the first hole segment and the second hole segment. A protrusion Ⅲ151 extending towards the end of the second hole segment is provided at the corner. The protrusion Ⅲ151 and the adjacent sidewall of the second hole segment form the aforementioned locking groove 152.

[0085] Working principle:

[0086] When the multi-functional stroller is stationary or switched to level mode, and the seat needs to be positioned horizontally, first move the lever 8 from the locking groove 152 towards the end of the second hole section (i.e., on the right side of the figure) outside the housing 17. Then, move the lever 8 vertically until it is flush with the first hole section, releasing the locking groove 152 from limiting the lever 8. Continue to push the multi-functional stroller to rotate the driven wheel 4 until it rotates until the limiting boss 41 on the driven wheel 4 is aligned with the limiting groove 31 of the sliding sleeve I3. Under the action of spring 2, the slider 32 of the sliding sleeve I3 moves along the groove 12 on the housing 17 towards the driven wheel 4. While the limiting boss 41 and the limiting groove 31 are engaged, the lever 8 moves automatically to the first hole section of the through hole 15 under the action of the groove I33 of the sliding sleeve I3 on ​​the protrusion I81. Since the groove 12 restricts the rotation of the sliding sleeve I3, the driven wheel 4, which is engaged with the sliding sleeve I3, cannot rotate, thus realizing the positioning of the crank 5.

[0087] When switching the multi-functional stroller to rocking mode, to release the seat's movement restriction, first move the lever 8 towards the end of the second hole section outside the housing 17, then press the lever 8. The lever 8 can rotate around its hinge point with the housing 17, causing the protrusion I81 on the lever 8 to move away from the driven wheel 4. Since the protrusion I81 cooperates with the groove I33 on the sliding sleeve I3, the protrusion I81 drives the sliding sleeve I3 away from the driven wheel 4, causing the driven wheel 4 and the sliding sleeve I3 to disengage. The driven wheel 4 can resume rotation, releasing the restriction on the seat's movement. At the same time, under the elastic force of the spring 2, the lever 8 enters the locking groove 152, locking the lever 8.

[0088] Example 2:

[0089] This embodiment is based on Embodiment 1, see Appendix Figure 12 and 13 The end of the lever 8 located inside the housing 17 is designated as the first end, and the end located outside the housing 17 is designated as the second end. This second end is the handle 83.

[0090] A protrusion I 81 is located at the end of the lever 8 located inside the housing 17. The hinge point between the lever 8 and the housing 17 is adjacent to the protrusion I 81 (this "adjacent" means that the center distance between the hinge point and the protrusion is less than the net distance between the hinge point and the side wall of the housing 17 where the through hole 15 is located), and the thickness at the hinge point of the lever 8 is greater than the thickness of the handle 83. Because the hinge point between the lever 8 and the housing 17 is adjacent to the protrusion I 81, the lever arm is longer and less effort is required when the handle 83 is turned.

[0091] Specifically, a pin hole 82 is provided at the position adjacent to the protrusion I 81 on the lever 8, and a fixing seat 13 is provided inside the housing 17. The lever 8 is pinned to the fixing seat 13 through the pin hole 82 by a pin 10; the pin 10 is a metal part.

[0092] The lever 8 can be a straight lever or a curved lever. In one specific embodiment, the lever 8 is a curved lever to make room for the installation of the multi-functional stroller handle.

[0093] Example 3:

[0094] Based on Embodiment 1, this embodiment differs from Embodiment 2 in that the hinge point between the lever 8 and the housing 17 is located at the end of the lever 8 located inside the housing 17.

[0095] The protrusion I 81 is set on the lever 8 and is adjacent to the hinge point of the lever 8;

[0096] Furthermore, the through hole 15 is horizontally reversed compared to the through hole 15 in Embodiment 2.

[0097] Everything else is the same as in Example 2, and will not be repeated here.

[0098] Example 4:

[0099] This embodiment is based on embodiment 2, see appendix. Figure 2-4 14-16, the drive shaft 14 is also coaxially equipped with the drive wheel 7 and the sliding sleeve II 16;

[0100] A guide block 18 is fixedly installed on the drive shaft 14, and a guide groove I 161 is provided on the inner circumference of the sliding sleeve II 16. The guide block 18 is located in the guide groove I 161, so that the sliding sleeve II 16 can slide along the drive shaft 14.

[0101] The driving wheel 7 and the driven wheel 4 are driven by the transmission mechanism 6. The driving wheel 7 is rotatably connected to the drive shaft 14. The end of the driving wheel 7 facing the sliding sleeve II 16 is provided with a number of guide bosses 19 distributed along the circumference. The end of the sliding sleeve II 16 facing the driving gear is provided with a number of guide grooves II 162 distributed along the circumference. The length direction of the guide bosses 19 and the guide grooves II 162 are both axial. The guide bosses 19 and the guide grooves II 162 can be matched one-to-one.

[0102] Furthermore, several guide grooves II162 are provided on the inner circumference of the sleeve II16, and guide bosses 19 are provided on the outer circumference of the drive wheel 7 facing the sleeve II16.

[0103] See appendix Figure 13 The lever 8 has a protrusion II 84 in the middle, and the protrusion II 84 is located on the side of the hinge point opposite to the protrusion I 81; the sliding sleeve II 16 has a groove II 163; the protrusion II 84 and the groove II 163 cooperate to realize the actuation of the sliding sleeve II 16.

[0104] When the multi-functional stroller is rocking, the guide groove II162 of the sliding sleeve II16 engages with the guide boss 19;

[0105] When the multi-functional stroller is in a horizontal position, the sliding sleeve II16 moves away from the drive wheel 7, and the guide boss 19 disengages from the guide groove II162.

[0106] The thickness of the protrusion Ⅱ 84 on the lever 8 is greater than the thickness of the handle 83 to ensure the strength of the lever 8.

[0107] Furthermore, the groove II163 can be an annular groove coaxial with the sliding sleeve II16, or it can be a coaxial arc groove, a circular groove extending radially, a square groove, or other polygonal grooves.

[0108] Furthermore, the driving pulley 7 is a driving pulley, the driven pulley 4 is a driven pulley, the transmission mechanism 6 is a belt, and the outer diameter of the driving pulley is smaller than the outer diameter of the driven pulley;

[0109] Alternatively, the driving gear 7 is the driving gear, the driven gear 4 is the driven gear, the transmission mechanism 6 is the idler gear, and the outer diameter of the driving gear is smaller than the outer diameter of the driven gear.

[0110] Alternatively, the driving sprocket 7 can be a driving sprocket, the driven sprocket 4 a driven sprocket, and the transmission mechanism 6 a chain, with the outer diameter of the driving sprocket being smaller than that of the driven sprocket.

[0111] Working principle:

[0112] When the seat needs to be limited in the stationary or horizontal movement mode of the multi-functional stroller, the protrusion II 84 moves the sliding sleeve II 16 along with the movement of the lever 8, causing the sliding sleeve II 16 to move away from the drive wheel 7. The guide groove II 162 of the sliding sleeve II 16 disengages from the guide boss 19 on the drive wheel 7. The guide block 18 rotates with the drive shaft 14, thereby driving the sliding sleeve II 16 to rotate. Since the guide groove II 162 of the sliding sleeve II 16 disengages from the guide boss 19 on the drive wheel 7, the drive wheel 7 is rotatably connected to the drive shaft 14, so the drive wheel 7 does not rotate. Therefore, there is no transmission between the drive wheel 7 and the driven wheel 4.

[0113] In the rocking mode of the multi-functional stroller, when the seat needs to be released from its limit, the protrusion II 84 moves the sliding sleeve II 16 along with the movement of the lever 8, causing the sliding sleeve II 16 to move in the direction of the drive wheel 7. The guide groove II 162 of the sliding sleeve II 16 engages with the guide boss 19 on the drive wheel 7. The guide block 18 rotates with the drive shaft 14, thereby driving the sliding sleeve II 16 to rotate. Since the guide groove II 162 of the sliding sleeve II 16 engages with the guide boss 19 on the drive wheel 7, the drive wheel 7 and the sliding sleeve II 16 rotate synchronously, thereby driving the driven wheel 4 to rotate, causing the crank 5 to rotate, and the carrier to rock.

[0114] Example 5:

[0115] This embodiment is based on any one of embodiments 1-3, and refers to the content of patent CN201492066A.

[0116] The driving gear 7 is the driving gear, the driven gear 4 is the driven gear; the transmission mechanism 6 is the idler gear;

[0117] The driving gear is fixedly connected to the drive shaft 14. An idler gear carrier is fitted around the driving gear. The idler gear is rotatably mounted on the idler gear carrier. The idler gear carrier is slidably connected to the drive shaft 14, allowing the idler gear carrier to slide along the axial direction of the drive shaft 14. By moving the idler gear carrier, the idler gear carrier and the driven gear of the driving gear mesh simultaneously, thereby generating a transmission between the driving gear and the driven gear. By moving the idler gear carrier, the idler gear and the driven gear of the driving gear disengage simultaneously, cutting off the transmission between the driving gear and the driven gear.

[0118] Alternatively, the drive gear is slidably connected to the drive shaft 14, and the drive gear can move along the axial direction of the drive shaft 14, and the drive gear moves synchronously with the idler gear carrier;

[0119] Furthermore, the idler gear carrier can also rotate along the drive shaft 14; two or more driven gears of different specifications are set on the crank shaft. By synchronously moving the idler gear carrier, the idler gear and the driving gear, and rotating the idler gear carrier and the idler gear, the idler gear carrier can mesh or disengage with different driven gears, thereby realizing the transmission between the driving gear and driven gears of different specifications.

[0120] Alternatively, the idler gear carrier can rotate along the drive shaft 14, and the idler gear meshes with the driving gear. Rotating the idler gear carrier causes the idler gear to mesh or disengage with the driven gear, thereby connecting or disconnecting the transmission between the driving gear and the driven gear.

[0121] Example 6:

[0122] This embodiment, based on any one of embodiments 1-3, also includes a clutch mechanism;

[0123] The clutch mechanism is located on the drive wheel 9. This clutch mechanism controls the drive wheel 9 to rotate synchronously with the drive shaft 14 or to disengage from rotation, thereby controlling the switching between the flat walking mode and the dynamic mode of the multi-functional stroller.

[0124] The clutch mechanism can adopt the clutch structure disclosed in patent CN201492066A.

[0125] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high-safety multi-functional children's stroller, comprising a carrier, a frame, a rocking mechanism, and a push handle; the rocking mechanism is disposed between the front of the carrier and the frame, the upper end of the rocking mechanism is pinned to the carrier, and the lower end is pinned to the frame; the drive shaft is rotatably mounted on the frame, and the drive wheel is coaxially and fixedly connected to the drive shaft; Its features are, The support body is a shell structure; the top of the support body is recessed to form a transverse through groove, and a central rib is fixedly connected in the transverse through groove along the longitudinal centerline of the support body. The trolley also includes a positioning mechanism, which comprises a driven wheel, a housing, a spring, a sliding sleeve I, and a lever; Sleeve I is coaxially sleeved on the crankshaft and adjacent to the driven wheel; spring is coaxially positioned on the side of sleeve I away from the driven wheel and abuts against sleeve I; The housing is provided with a sliding groove, which is arranged axially along the crankshaft; the sliding sleeve I is provided with a slider, which is located inside the sliding groove; The housing has a through hole, through which the lever passes. The part of the lever inside the housing is hinged to the housing. The lever also has a protrusion I and a groove I on the sliding sleeve I. The protrusion I and the groove I are connected in a mating manner. The through hole has a locking groove. When the multi-functional stroller is rocking, the lever is in the locking groove, the spring is compressed, and the sliding sleeve I is disengaged from the driven wheel. When the carrier of the multi-functional children's stroller is positioned, the lever disengages from the locking groove, and the lever can rotate along the hinge point. Under the action of the spring force, the sliding sleeve I engages with the driven wheel.

2. The high-safety multi-functional child stroller as described in claim 1, characterized in that, The front end of the central rib is integrally formed with the front wall of the transverse through groove, the bottom end is integrally formed with the bottom of the transverse through groove, and the rear end is integrally formed with the rear wall of the transverse through groove.

3. The high-safety multi-functional child stroller as described in claim 2, characterized in that, A seat is provided on the carrier, and a boss is provided on the top surface of the seat. The boss is located at the front end of the top surface of the seat or along the edge of the seat.

4. The high-safety multi-functional child stroller as described in claim 3, characterized in that, The bottom part of the transverse through groove located on both sides of the central rib forms two pedals, and a connecting plate is fixedly connected between the two pedals.

5. The high-safety multi-functional child stroller as described in claim 2, characterized in that, The width of the central rib gradually decreases from bottom to top.

6. The high-safety multi-functional child stroller as described in claim 1, characterized in that, The top surface of the central rib is curved, and the center line of the curved surface is an arc-shaped center line. A seat is installed on the carrier. The seat is located on the top of the carrier and behind the transverse through groove. The lowest point of the arc-shaped center line is lower than the height of the top surface of the seat.

7. The high-safety multi-functional child stroller as described in claim 1, characterized in that, The front end of the central rib has a mounting hole, and the handrail is installed in the mounting hole.

8. A high-safety multi-functional child stroller as described in any one of claims 1-7, characterized in that, A limiting boss is provided on the driven wheel, and a limiting groove is provided on the sliding sleeve I. When the limiting groove and the limiting boss are engaged, the seat is horizontal.

9. The high-safety multi-functional child stroller as described in claim 8, characterized in that, The through hole includes a first hole segment and a second hole segment that are connected. The height of the second hole segment is greater than the height of the first hole segment, so that a corner is formed between the first hole segment and the second hole segment. A protrusion III extending towards the end of the second hole segment is provided at the corner. The protrusion III and the sidewall of the adjacent second hole segment form the aforementioned locking groove.

10. The high-safety multi-functional child stroller as described in claim 9, characterized in that, The drive shaft is also coaxially equipped with a drive wheel and a sliding sleeve II; A guide block is fixedly installed on the drive shaft, and a guide groove I is provided on the inner circumference of the sliding sleeve II. The guide block is located in the guide groove I, so that the sliding sleeve II can slide along the drive shaft. The driving wheel and the driven wheel are driven by a transmission mechanism. The driving wheel is rotatably connected to the drive shaft. The end of the driving wheel facing the sliding sleeve II is provided with several guide bosses distributed along the circumference. The end of the sliding sleeve II facing the driving gear is provided with several guide grooves II distributed along the circumference. The length direction of the guide bosses and the guide grooves II are both along the axial direction. The guide bosses and the guide grooves II can be matched one-to-one. The lever has a protrusion II in the middle, and protrusion II is located on the side of the hinge point opposite to protrusion I; the sliding sleeve II has a groove II; protrusion II and groove II cooperate. When the multi-functional stroller is rocking, the guide groove II of the slide sleeve II engages with the guide boss; When the multi-functional stroller is in a horizontal position, the sliding sleeve II moves away from the drive wheel, and the guide boss disengages from the guide groove II.

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