Seat positioning mechanism for multifunctional stroller and multifunctional stroller

Abstract

The utility model discloses a seat positioning mechanism for a multifunctional child cart. The seat positioning mechanism comprises a shell, a spring, a sliding sleeve I and a deflector rod, the sliding sleeve I coaxially sleeves the crankshaft and is adjacent to the driven wheel; the spring is coaxially arranged on the side, away from the driven wheel, of the sliding sleeve I in a limiting mode and abuts against the sliding sleeve I; a sliding groove is formed in the shell. A sliding block is arranged on the sliding sleeve I and located in the sliding groove. A through hole is formed in the shell, the deflector rod penetrates through the through hole, and the part, located in the shell, of the deflector rod is hinged to the shell; a convex block I is further arranged on the shifting rod, a groove I is formed in the sliding sleeve I, and the convex block I is matched with the groove I; a locking groove is formed in the through hole; when the cart is in a shaking state, the shifting rod is located in the locking groove, the spring is in a pressed state, and the sliding sleeve I and the driven wheel are separated from each other; when the seat of the cart is positioned, the shifting rod is separated from the locking groove and can rotate along the hinge point, and the sliding sleeve I is matched with the driven wheel in a concave-convex mode under the action of the elastic force of the spring. According to the utility model, the seat can be positioned.

Description

Technical Field

[0001] This utility model belongs to the field of children's vehicle technology, specifically relating to a seat positioning mechanism for a multi-functional children's stroller and the multi-functional 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 children's stroller is currently available, as described in patent publication number 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 cause the carrier body to move.

[0004] However, when the above-mentioned multi-functional stroller is moving on a flat surface, the position of the bend is not fixed, which causes the seat on the carrier to suddenly drop when the child is sitting in the stroller, and the seat is not very stable during the pushing process. Utility Model Content

[0005] In view of this, the present invention provides a seat positioning mechanism for a multi-functional stroller and a multi-functional stroller, which limits the position of the seat of the carrier in both the horizontal walking mode and the stationary mode, and ensures the stability of the seat in both the horizontal walking mode and the stationary mode.

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

[0007] A seat positioning mechanism for a multi-functional stroller, wherein the crank and driven wheel of the multi-functional stroller are fixedly connected to the crankshaft, the crank is pin-connected to the carrier of the multi-functional stroller, and the seat is located on the carrier. The seat positioning mechanism includes a housing, a spring, a sliding sleeve I, and a lever.

[0008] Sleeve I is coaxially sleeved on the crankshaft and adjacent to the driven wheel; spring is coaxially limited on the side of sleeve I away from the driven wheel and abuts against sleeve I;

[0009] 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;

[0010] 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.

[0011] 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.

[0012] When the seat of the multi-functional stroller is in position, 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.

[0013] Furthermore, a limiting boss is provided on the driven wheel, and a limiting groove is provided on the sliding sleeve I.

[0014] When the limiting groove and the limiting boss are engaged, the seat is level.

[0015] 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.

[0016] Furthermore, a limiting component is coaxially fixedly connected to the crankshaft, with one end of the spring abutting against the limiting component and the other end abutting against the sliding sleeve I.

[0017] Furthermore, protrusion I is located at the end of the lever located inside the housing; the hinge point between the lever and the housing is adjacent to protrusion I.

[0018] Furthermore, the thickness at the hinge point of the lever is greater than the thickness of the handle.

[0019] A multi-functional children's stroller, based on a seat positioning mechanism for a multi-functional children's stroller, includes the seat positioning mechanism, a carrier, rear wheels, a frame, and a rocking structure;

[0020] The swing structure is set between the front of the carrier and the vehicle chassis. The upper end of the swing structure is pinned to the carrier and the lower end is pinned to the vehicle chassis.

[0021] The drive shaft is rotatably mounted on the chassis, with two rear wheels located at both ends of the drive shaft, one of which serves as the drive wheel; the drive wheel is coaxially and fixedly connected to the drive shaft.

[0022] The drive shaft is also coaxially equipped with a drive wheel and a sliding sleeve II;

[0023] 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.

[0024] 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.

[0025] 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.

[0026] When the multi-functional stroller is rocking, the guide groove II of the sliding sleeve II engages with the guide groove II.

[0027] 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.

[0028] A multi-functional stroller, based on a seat positioning mechanism for a multi-functional stroller, includes the seat positioning mechanism, a carrier, rear wheels, a frame, and a rocking structure;

[0029] The swing structure is set between the front of the carrier and the vehicle chassis. The upper end of the swing structure is pinned to the carrier and the lower end is pinned to the vehicle chassis.

[0030] The drive shaft is rotatably mounted on the chassis, with two rear wheels located at both ends of the drive shaft, one of which serves as the drive wheel. The drive wheel is coaxially connected to the drive shaft. A driving wheel is also coaxially mounted on the drive shaft, and the driving wheel and the driven wheel are driven by a transmission mechanism.

[0031] Furthermore, the drive wheel is coaxially and fixedly connected to the drive shaft;

[0032] The driving gear is a driving gear, and the driven gear is a driven gear; the transmission mechanism is an idler gear;

[0033] The drive gear is fixedly connected to the drive shaft, and an idler gear carrier is fitted around the drive gear. The idler gear is rotatably mounted on the idler gear carrier.

[0034] The idler gear carrier is rotatably and / or slidably connected to the drive shaft. By rotating and / or moving the idler gear carrier along the axis, the transmission between the driving gear and the driven gear is interrupted.

[0035] Furthermore, it also includes a clutch mechanism, which is mounted on the drive wheel and controls the drive wheel to rotate synchronously with or disengage from the drive shaft.

[0036] Beneficial effects:

[0037] (1) The present invention provides a seat positioning mechanism for a multifunctional children's stroller. Through the setting of spring, sliding sleeve I and lever, the seat can be limited and fixed in the flat walking mode or when the child gets on and off the stroller, so as to ensure the stability of the seat.

[0038] (2) 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.

[0039] (3) 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.

[0040] (4) The protrusion I of this utility model is set at the end of the first end of the lever located inside the housing; the hinge point between the lever and the housing is set adjacent to the protrusion I, the lever arm is longer, and it is easier to move the lever.

[0041] (5) The thickness of the lever hinge point is greater than the thickness of the handle. The greater thickness of the hinge point can ensure the hinge strength between the lever and the housing. The smaller thickness of the handle can realize the elastic deformation of the handle, making it smoother when the handle is locked into or removed from the locking groove.

[0042] (6) 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 between the rocking mode and the flat walking mode of the multi-functional children's stroller. Attached Figure Description

[0043] Figure 1 This is a structural diagram of the horizontal positioning mechanism of this utility model;

[0044] Figure 2 This is a schematic diagram of the structure of the shell of this utility model;

[0045] Figure 3 This is a structural diagram of the driven gear of this utility model;

[0046] Figure 4 This is the structure of the sliding sleeve I of this utility model. Figure I ;

[0047] Figure 5This is the structure of the sliding sleeve I of this utility model. Figure II ;

[0048] Figure 6 This is a structural diagram of the through hole in this utility model;

[0049] Figure 7 This is the front view of the lever of this utility model;

[0050] Figure 8 This is a left view of the lever of this utility model;

[0051] Figure 9 This is the structure of the sliding sleeve II of this utility model. Figure I ;

[0052] Figure 10 This is the structure of the sliding sleeve II of this utility model. Figure II ;

[0053] Figure 11 This is an example diagram of the drive shaft and drive wheel of this utility model.

[0054] 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. Detailed Implementation

[0055] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0056] Example 1:

[0057] This embodiment provides a seat positioning mechanism for a multi-functional stroller, see attached document. Figure 1-3 The crank 5 and driven wheel 4 of the multi-functional children's stroller are both fixedly connected to the crankshaft 1. The crank 5 is pin-connected to the carrier of the multi-functional children's stroller. The seat is located on the carrier. When the driven wheel 4 rotates, the carrier shakes.

[0058] The seat positioning mechanism includes a housing 17, a spring 2, a sliding sleeve I3, and a lever 8;

[0059] 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;

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] This embodiment provides a seat positioning mechanism for a multi-functional stroller, which can limit and fix the seat in a flat walking mode or when the child gets in and out of the stroller, ensuring the stability of the seat.

[0065] 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.

[0066] In one specific embodiment, see Appendix Figure 3 and 4 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.

[0067] In addition, the seat can be positioned at other angles.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] See appendix Figure 5 The side of the sliding sleeve I3 that abuts against the spring 2 is provided with a coaxial circular groove I34, and the side of the limiting member 11 that abuts against the spring 2 is provided with a coaxial circular groove II. The circular grooves I34 and II can ensure the reliable contact of the spring 2.

[0072] In addition, the end of the spring 2 that is opposite to the sliding sleeve I3 can directly abut against the inner wall of the housing 17.

[0073] See appendix Figure 6 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.

[0074] Working principle:

[0075] 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.

[0076] 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.

[0077] Example 2:

[0078] This embodiment is based on Embodiment 1, see Appendix Figure 7 and 8 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] Example 3:

[0083] 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.

[0084] The protrusion I 81 is set on the lever 8 and is adjacent to the hinge point of the lever 8;

[0085] Furthermore, the through hole 15 is horizontally reversed compared to the through hole 15 in Embodiment 2.

[0086] Everything else is the same as in Example 2, and will not be repeated here.

[0087] Example 4:

[0088] Based on Embodiment 2 and referring to the content of patent CN101492066A, this embodiment provides a multifunctional children's stroller, including the aforementioned seat positioning mechanism, carrier, front wheels, rear wheels, frame, push handle, and rocking structure; the drive shaft 14 is rotatably mounted on the frame, and the two rear wheels are located at both ends of the drive shaft 14, one of which serves as the drive wheel 9; the drive wheel 9 is coaxially and fixedly connected to the drive shaft 14.

[0089] The swing structure is located between the front of the load-bearing body and the underframe. The upper end of the swing structure is pinned to the load-bearing body, and the lower end is pinned to the underframe. The swing structure uses a rocker arm.

[0090] See appendix Figure 1 , 2 9-11, The drive shaft 14 is also coaxially equipped with a drive wheel 7 and a sliding sleeve II 16;

[0091] 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.

[0092] 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.

[0093] 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 end of the sleeve II16.

[0094] See appendix Figure 8 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.

[0095] When the multi-functional stroller is rocking, the guide groove II162 of the sliding sleeve II16 engages with the guide groove II162.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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;

[0100] 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.

[0101] 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.

[0102] Working principle:

[0103] 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.

[0104] 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.

[0105] Example 5:

[0106] Based on any one of embodiments 1-3, and referring to the content of patent CN101492066A, this embodiment provides a multifunctional children's stroller, including the aforementioned seat positioning mechanism, carrier, front wheels, rear wheels, push handle, frame, and rocking structure; the drive shaft 14 is rotatably mounted on the frame, and the two rear wheels are located at both ends of the drive shaft 14, one of which serves as the drive wheel 9; the drive wheel 9 is coaxially and fixedly connected to the drive shaft 14;

[0107] The swing structure is located between the front of the carrier and the vehicle chassis. The upper end of the swing structure is pinned to the carrier, and the lower end is pinned to the vehicle chassis.

[0108] The driving gear 7 is the driving gear, the driven gear 4 is the driven gear; the transmission mechanism 6 is the idler gear;

[0109] The driving gear is fixedly connected to the drive shaft 14. An idler gear frame is fitted around the driving gear 7. The idler gear is rotatably mounted on the idler gear frame. The idler gear frame is slidably connected to the drive shaft 14, allowing the idler gear frame to slide along the axial direction of the drive shaft 14. By moving the idler gear frame, the idler gear frame 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 frame, 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.

[0110] 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;

[0111] 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.

[0112] Alternatively, the idler gear carrier can rotate along the drive shaft 14, and the idler gear meshes with the drive 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 drive gear and the driven gear.

[0113] Example 6:

[0114] Based on any one of embodiments 1-3, this embodiment provides a multifunctional children's stroller, including a seat positioning mechanism, a carrier, front wheels, rear wheels, a push handle, a frame, a rocking structure, and a clutch mechanism;

[0115] The drive shaft 14 is rotatably mounted on the chassis, and the two rear wheels are located at both ends of the drive shaft 14, with one of the rear wheels serving as the drive wheel 9;

[0116] The swing structure is located between the front of the carrier and the vehicle chassis. The upper end of the swing structure is pinned to the carrier, and the lower end is pinned to the vehicle chassis.

[0117] 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.

[0118] The clutch mechanism can adopt the clutch structure disclosed in patent CN101492066A.

[0119] 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 seat positioning mechanism for a multi-functional stroller, wherein the crank and driven wheel of the multi-functional stroller are both fixedly connected to the crankshaft, the crank is pin-connected to the carrier of the multi-functional stroller, and the seat is located on the carrier, characterized in that, The seat positioning mechanism includes 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 limited 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 seat of the multi-functional stroller is in position, 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 seat positioning mechanism for a multifunctional stroller as described in claim 1, characterized in that, The driven wheel is provided with a limiting boss, and the sliding sleeve I is provided with a limiting groove. When the limiting groove and the limiting boss are engaged, the seat is level.

3. The seat positioning mechanism for a multifunctional stroller as described in claim 1, 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.

4. The seat positioning mechanism for a multifunctional stroller as described in claim 1, characterized in that, A limiting component is also coaxially fixedly connected to the crankshaft. One end of the spring abuts against the limiting component, and the other end abuts against the sliding sleeve I.

5. A seat positioning mechanism for a multifunctional stroller as described in any one of claims 1-4, characterized in that, Protrusion I is located at the end of the lever located inside the housing; the hinge point between the lever and the housing is located adjacent to protrusion I.

6. The seat positioning mechanism for a multi-functional stroller as described in claim 5, characterized in that, The thickness at the hinge point of the lever is greater than the thickness of the handle.

7. A multi-functional stroller, based on the seat positioning mechanism for a multi-functional stroller as described in claim 5 or 6, characterized in that, Includes the seat positioning mechanism, the carrier, the rear wheels, the vehicle chassis, and the swing structure; The swing structure is set between the front of the carrier and the vehicle chassis. The upper end of the swing structure is pinned to the carrier and the lower end is pinned to the vehicle chassis. The drive shaft is rotatably mounted on the chassis, with two rear wheels located at both ends of the drive shaft, one of which serves as the drive wheel; the drive wheel is coaxially and fixedly connected to the drive shaft. 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 sliding sleeve II engages with the guide groove II. 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.

8. A multi-functional stroller, based on a seat positioning mechanism for a multi-functional stroller as described in any one of claims 1-6, characterized in that, Includes the seat positioning mechanism, the carrier, the rear wheels, the vehicle chassis, and the swing structure; The swing structure is set between the front of the carrier and the vehicle chassis. The upper end of the swing structure is pinned to the carrier and the lower end is pinned to the vehicle chassis. The drive shaft is rotatably mounted on the chassis, with two rear wheels located at both ends of the drive shaft, one of which serves as the drive wheel. The drive wheel is coaxially connected to the drive shaft. A driving wheel is also coaxially mounted on the drive shaft, and the driving wheel and the driven wheel are driven by a transmission mechanism.

9. A multifunctional children's stroller as described in claim 8, characterized in that, The drive wheel is coaxially and fixedly connected to the drive shaft; The driving gear is a driving gear, and the driven gear is a driven gear; the transmission mechanism is an idler gear; The drive gear is fixedly connected to the drive shaft, and an idler gear carrier is fitted around the drive gear. The idler gear is rotatably mounted on the idler gear carrier. The idler gear carrier is rotatably and / or slidably connected to the drive shaft. By rotating and / or moving the idler gear carrier along the axis, the transmission between the driving gear and the driven gear is interrupted.

10. A multifunctional children's stroller as described in claim 8, characterized in that, It also includes a clutch mechanism, which is mounted on the drive wheel and controls the drive wheel to rotate synchronously with or disengage from the drive shaft.

Images