A push handle and multifunctional stroller

Abstract

The utility model discloses a push handle and multifunctional children's push car, push handle includes: outer sleeve, inner sleeve, handle, telescopic adjusting assembly and the locking assembly of setting at the bottom of inner sleeve, telescopic adjusting assembly is used for control locking assembly between the locking of outer sleeve 117 relative or not, telescopic adjusting assembly includes the button of pushing, and the button of pushing sets up at handle top. The utility model is convenient for push handle length one -hand adjustment, and the misoperation of button of pushing is not easy to produce, guarantees the stability in the process of pushing multifunctional children's push car.

Description

Technical Field

[0001] This utility model belongs to the field of children's vehicle technology, specifically relating to a push handle and a multi-functional children's stroller. Background Technology

[0002] In the field of children's products, traditional strollers generally adopt a translational walking structure, which provides a smooth but uninteresting ride. To improve the riding experience for infants and toddlers, existing technologies have introduced strollers with dynamic undulation functions, such as the "new type of stroller with dynamic and flat walking" disclosed in Chinese patent CN101492066A. This stroller uses the mechanical linkage of crankshafts, connecting rods, and the support body to transform the translational motion of the wheels into the undulating and swaying motion of the support body, realizing the switching between flat walking mode and dynamic mode, thus enhancing the riding pleasure for infants and toddlers.

[0003] However, this existing technology only discloses the basic structure, and the length of the push handle cannot be adjusted, failing to meet the comfort needs of parents of different heights when pushing the stroller. Existing stroller push handle length adjustment buttons are generally located on the handle itself, making it inconvenient to adjust the handle length while pushing; length adjustment buttons located on the push handle are prone to accidental activation during pushing. Utility Model Content

[0004] In view of this, the present invention provides a push handle and a multi-functional children's stroller, which facilitates one-handed adjustment of the push handle length while reducing the risk of accidental button activation, thus ensuring the stability of pushing the multi-functional children's stroller.

[0005] This utility model is achieved through the following technical solution:

[0006] A push handle includes an outer sleeve, an inner sleeve, a grip, a telescopic adjustment assembly, and a locking assembly disposed at the bottom end of the inner sleeve;

[0007] The telescopic adjustment assembly includes a toggle button, mounting base I, sliding pin I, and push rod;

[0008] Mounting base I is fitted inside the inner sleeve; the toggle button is located on the top of the handle, and the bottom of the toggle button extends into mounting base I; the toggle button can move longitudinally.

[0009] The mounting base I is provided with a horizontal sliding groove I, and the inner sleeve is provided with a right-angle sliding groove; the right-angle sliding groove includes a horizontal groove and a vertical groove, with the end of the vertical groove facing the bottom of the inner sleeve;

[0010] The sliding pin I is provided with a toggle button, a horizontal slide groove I, and a right-angle slide groove along its horizontal direction;

[0011] One end of the push rod abuts against the bottom of mounting base I, and the other end abuts against the locking assembly, realizing the transmission between the toggle button and the locking assembly; a spring I is provided inside the locking assembly, which can push the push rod upward;

[0012] When the toggle button is pressed and the sliding pin I is located at the bottom of the vertical groove of the right-angle slide, the locking component is unlocked from the outer sleeve, and the inner sleeve component can slide relative to the outer sleeve to adjust the length of the push handle.

[0013] When the toggle button is pressed and the sliding pin I is positioned at the end of the horizontal groove of the right-angle slide, the locking assembly locks with the outer sleeve, and the length of the push handle is fixed.

[0014] Furthermore, the telescopic adjustment assembly also includes a guide rod and spring II;

[0015] The guide rod is set laterally within the mounting base I and can move longitudinally; the guide rod is perpendicular to the sliding pin I; the guide rod is also fitted with a toggle button, which can move along the length of the guide rod.

[0016] Spring II is sleeved on the outer periphery of the guide rod and located on the side of the vertical groove of the right-angle slide; one end of spring II abuts against the inner wall of mounting seat I, and the other end abuts against the toggle button.

[0017] Furthermore, the top inner wall of the mounting base I is provided with longitudinal guide grooves I on both opposite sides, and the two ends of the guide rod are respectively engaged in the corresponding guide grooves I.

[0018] Furthermore, the locking assembly also includes mounting base II, telescopic collet, sliding pin II, mounting sleeve, and fixing pin;

[0019] The bottom end of the mounting sleeve is fixed to the inner sleeve, and the two opposite sides of the mounting base II are provided with inclined sliding grooves;

[0020] Mounting base II is installed inside the mounting cylinder, and transverse sliding grooves II are provided on two opposite sides of the mounting cylinder;

[0021] The telescopic clamp head is set inside the mounting base II, and the sliding pin II passes through the transverse slide groove II, the oblique slide groove and the telescopic clamp head.

[0022] Mounting base II is provided with a through hole I for telescopic head extension and retraction. The height of the inclined slide groove facing through hole I is lower than that of the other end. Mounting cylinder is provided with a through hole II for telescopic head extension and retraction.

[0023] The bottom of the mounting cylinder is closed, and spring I is set inside the mounting cylinder, with one end abutting against the inner bottom surface of the mounting cylinder and the other end abutting against the bottom surface of the mounting base II;

[0024] The outer sleeve has several locking holes distributed along its length, and the telescopic locking head can be engaged with these locking holes.

[0025] Furthermore, a push rod top seat is provided at the bottom center of mounting base I, and the top end of the push rod extends into the push rod top seat;

[0026] The bottom end of the push rod base abuts against the mounting base II; a boss is provided at the center of the top of the push rod base, and a groove is provided on the top of the boss, with the bottom end of the push rod engaging with the groove.

[0027] Furthermore, the top of the mounting base II is provided with an opening groove, and the mounting cylinder is provided with a fixing hole. The fixing pin passes through the inner sleeve, the fixing hole and the opening groove in sequence, and the fixing pin can slide in the opening groove.

[0028] Furthermore, the bottom of the mounting cylinder is provided with flange II, and the top of the mounting cylinder extends into the inner sleeve. The outer diameter of flange II is larger than the outer diameter of the inner sleeve.

[0029] The top of the outer tube is fixedly connected to a limiting sleeve, which can pull the flange II of the inner cylinder assembly to abut against the limiting sleeve.

[0030] A multifunctional children's stroller, based on a push handle, includes a push handle, a crank shaft, a frame, a crank, a carrier, a rocker arm, a drive wheel, a drive shaft, and a transmission mechanism;

[0031] The crankshaft is rotatably mounted on the chassis. One end of the crank is fixedly connected to the crankshaft, and the other end is pinned to the carrier. The bottom end of the rocker arm is pinned to the chassis, and the top end is pinned to the carrier. A seat is mounted on the carrier. The crankshaft is located below the seat.

[0032] The bottom of the push handle is fixedly connected to the rear end of the chassis, and the top is bent away from the load-bearing body.

[0033] The drive shaft is rotatably mounted on the chassis, and the drive wheel is coaxially connected to the drive shaft. The drive shaft drives the crankshaft and crank to rotate through a transmission mechanism to reduce speed.

[0034] When the crank pin axis is at its highest point, the vertical distance H between the top and bottom pin axes of the rocker arm is greater than or equal to the crank's eccentricity.

[0035] The crank eccentricity ranges from 20mm to 60mm, and the maximum pitch angle θ of the seat surface ranges from 0° to 30°.

[0036] Furthermore, the horizontal distance D between the bottom pin axis of the rocker arm and the axis of the crank shaft ranges from 200mm to 400mm, and the distance between the top pin axis and the bottom pin axis of the rocker arm ranges from 20mm to 340mm in the vertical length H.

[0037] Furthermore, a sliding sleeve is coaxially mounted on the drive shaft; a guide block is fixedly mounted on the drive shaft, and a guide groove I is provided on the inner circumference of the sliding sleeve. The guide block is located in the guide groove I, so that the sliding sleeve can slide along the drive shaft.

[0038] The drive wheel is rotatably connected to the drive shaft.

[0039] The end of the drive wheel facing the sliding sleeve is provided with several guide bosses distributed along the circumference, and the end of the sliding sleeve facing the drive wheel is provided with several guide grooves II distributed along the circumference. The length direction of both the guide bosses and the guide grooves II is along the axial direction, and the guide bosses can be matched with the guide grooves II one by one.

[0040] The driven wheel is coaxially fixed on the crankshaft, and the driving wheel and the driven wheel are driven by a transmission component;

[0041] When changing the way the rocking horse moves, move the sliding sleeve to engage or disengage it from the drive wheel.

[0042] Beneficial effects:

[0043] (1) The push handle provided by this utility model requires the toggle button to be pressed and turned to unlock the locking component from the outer sleeve due to the setting of the right angle slide groove. Due to the setting of spring I, when the toggle button is released, the sliding pin I can automatically move upward to the connection of the horizontal and vertical grooves of the right angle slide groove. The toggle button can be set on the top of the handle to facilitate the adjustment of the push handle length and prevent accidental contact.

[0044] (2) In this utility model, the guide rod can guide the lateral movement of the toggle button while moving longitudinally with the toggle button. The spring II can push the toggle button in the direction of the horizontal groove when the sliding pin I moves to the connection between the horizontal groove and the vertical groove of the right angle slide, so that the sliding pin I automatically enters the end of the horizontal groove of the right angle slide, which further facilitates the adjustment of the push handle length.

[0045] (3) In this utility model, guide grooves are provided on both sides of the top inner wall of the mounting base I along the longitudinal direction, so that the guide rod can move longitudinally with the toggle button, and the guide rod can also be limited laterally. The guide rod can be inserted into the guide groove along the longitudinal direction. The structure is simple and easy to install.

[0046] (4) In this utility model, by setting the inclined sliding groove of the mounting base II and the transverse sliding groove II on the mounting cylinder, the longitudinal movement of the mounting base is converted into the transverse movement of the telescopic locking head, thereby realizing the locking of the locking component relative to the outer sleeve. Furthermore, due to the setting of the spring I, when the telescopic locking head is aligned with the locking hole of the outer sleeve, the telescopic locking head can automatically extend, thereby realizing automatic pop-out locking, avoiding complicated operation steps, and is especially suitable for single-handed operation scenarios.

[0047] (5) In this utility model, the top of the push rod abuts against the bottom center of the mounting base I, and the bottom abuts against the top center of the push rod base, ensuring that the thrust is transmitted evenly and effectively.

[0048] (6) In this utility model, the top of the mounting base II is provided with an opening groove, and the fixing pin can slide in the opening groove, so as to realize the fixed connection between the inner sleeve and the mounting cylinder, while ensuring the smooth longitudinal sliding of the mounting base II.

[0049] (7) In this utility model, the flange II of the inner cylinder assembly can be pulled to abut against the limiting sleeve. The limiting sleeve is set to prevent the inner cylinder assembly from being pulled out of the outer cylinder.

[0050] (8) The present invention provides a multifunctional children's stroller, wherein the top of the push handle is bent away from the carrier to prevent interference with the carrier when it is in wave motion.

[0051] (9) The end of the active wheel facing the sliding sleeve II is provided with several guide bosses distributed along the circumference, and the end of the sliding sleeve II facing the active wheel is provided with several guide grooves II distributed along the circumference. This enables the smooth cooperation between the sliding sleeve II and the active wheel, the engagement and disengagement between the drive shaft and the active wheel, and the smooth switching between the rocking mode and the flat walking mode of the multifunctional children's stroller. Attached Figure Description

[0052] Figure 1 This is a diagram showing the position of the push handle on the cart;

[0053] Figure 2 An exploded view of the push handle;

[0054] Figure 3 for Figure 2 A magnified view of part A;

[0055] Figure 4 Assembly drawing of the inner cylinder assembly;

[0056] Figure 5 for Figure 4 The C-direction view;

[0057] Figure 6 Diagram of the toggle button structure;

[0058] Figure 7 For the guide component structure diagram;

[0059] Figure 8 for Figure 2 A magnified view of part B;

[0060] Figure 9 Exploded view of the locking component;

[0061] Figure 10 The structure is that of an outer sleeve;

[0062] Figure 11 This is a diagram of the internal structure of the cart (the supporting structure is not shown).

[0063] Figure 12 A simplified diagram of the crank-rocker structure;

[0064] Figure 13 Example diagram of a transmission mechanism;

[0065] Figure 14 The structure of the sliding sleeve Figure I ;

[0066] Figure 15 The structure of the sliding sleeve Figure II ;

[0067] Figure 16 This is an example diagram showing the connection between the drive shaft and the drive wheel.

[0068] Among them, 1-push handle, 101-right grip, 102-toggle button, 1021-guide hole, 1022-pin hole, 1023-flange I, 103-guide rod, 104-mounting base I, 1041-guide groove I, 1042-transverse slide groove I, 1043-push rod top seat, 105-sliding pin I, 106-inner sleeve, 1061-right angle slide groove, 107-push rod, 108-push rod base, 109-mounting base II, 1091-slant Slide groove, 1092-opening groove, 1093-through hole I, 110-telescopic locking head, 111-sliding pin II, 112-spring I, 113-mounting cylinder, 1131-transverse slide groove II, 1132-flange II, 1133-through hole, 1134-fixing hole, 114-fixing pin, 115-left grip, 116-limiting sleeve, 117-outer sleeve, 1171-locking hole, 118-spring buckle, 119-limiting groove, 120-spring II;

[0069] 2-Crank, 3-Underframe, 4-Rockarm, 5-Seat, 501-Partial seat, 6-Drive wheel, 7-Transmission mechanism, 71-Drive wheel, 72-Driven wheel, 73-Transmission component, 74-Idler wheel carrier, 8-Drive shaft, 9-Crankshaft, 10-Buffer spring, 11-Sliding sleeve, 1101-Guide groove I, 1102-Guide groove II, 12-Guide block, 13-Guide boss, 14-Bearing body. Detailed Implementation

[0070] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0071] Example 1:

[0072] This embodiment provides a push handle, see attached document. Figure 1-5 This includes the inner cylinder assembly and the outer cylinder 117;

[0073] The inner cylinder assembly includes an inner sleeve 106, a handle, a telescopic adjustment assembly, and a locking assembly disposed at the bottom end of the inner sleeve 106; the telescopic adjustment assembly is used to control whether the locking assembly is locked relative to the outer sleeve 117.

[0074] The telescopic adjustment assembly includes a toggle button 102, a mounting base I 104, a sliding pin I 105, and a push rod 107;

[0075] Mounting base I 104 is fitted inside the inner sleeve 106; toggle button 102 is located on the top of the handle, and the bottom of toggle button 102 extends into mounting base I 104; toggle button can move longitudinally.

[0076] The mounting base I104 is provided with a transverse sliding groove I1042, and the inner sleeve 106 is provided with a right-angle sliding groove 1061; the right-angle sliding groove 1061 includes a horizontal groove and a vertical groove, with the end of the vertical groove facing the bottom end of the inner sleeve 106.

[0077] A sliding pin I105 is provided with a toggle button 102, a transverse slide groove I1042 and a right-angle slide groove 1061 passing through it laterally;

[0078] One end of the push rod 107 abuts against the bottom of the mounting base I 104, and the other end abuts against the locking assembly, realizing the transmission between the toggle button 102 and the locking assembly; a spring I 112 is provided inside the locking assembly, which can push the push rod 107 upward;

[0079] When the toggle button 102 is moved horizontally and pressed vertically, so that the sliding pin I 105 is located at the bottom of the vertical groove of the right-angle slide groove 1061, the locking component is unlocked from the outer sleeve 117, and the inner sleeve component can slide relative to the outer sleeve 117 to adjust the length of the push handle.

[0080] When the horizontal toggle button is moved so that the sliding pin I105 is located at the end of the horizontal groove of the right-angle slide groove 1061, the locking assembly locks with the outer sleeve 117, and the length of the push handle is fixed.

[0081] The push handle provided in this embodiment requires the toggle button 102 to be pressed and moved to unlock the locking component from the outer sleeve 117 due to the right-angle slide groove 1061. Due to the spring I 112, when the toggle button 102 is released, the sliding pin I 105 can automatically move upward to the connection between the horizontal and vertical grooves of the right-angle slide groove 1061. The toggle button 102 can be set at the top of the handle to facilitate the adjustment of the push handle length and prevent accidental activation.

[0082] For further details, please see the appendix. Figure 2 and 3 The telescopic adjustment assembly also includes a guide rod 103 and a spring II 120;

[0083] The guide rod 103 is arranged laterally in the mounting base I 104 and can move longitudinally; the guide rod 103 is perpendicular to the sliding pin I 105; the guide rod 103 is also provided with a toggle button 102, which can move along the length of the guide rod 103.

[0084] Spring II 120 is sleeved on the outer periphery of guide rod 103 and located on the side of the vertical groove of right angle slide 1061; one end of spring II 120 abuts against the inner wall of mounting base I 104 and the other end abuts against toggle button 102;

[0085] In this embodiment, the guide rod 103 can guide the lateral movement of the toggle button 102 while moving longitudinally along with the toggle button 102. The spring 120 can push the toggle button 102 in the direction of the horizontal groove when the sliding pin 105 moves to the connection between the horizontal groove and the vertical groove of the right-angle slide groove 1061, so that the sliding pin 105 automatically enters the end of the horizontal groove of the right-angle slide groove 1061.

[0086] See appendix Figure 3 and 6 The grip includes a left grip 115 and a right grip 101. Both the left grip 115 and the right grip 101 are provided with a limiting groove 119. The toggle button 102 is provided with a flange I 1023 in the longitudinal middle, and the flange I 1023 is engaged in the limiting groove 119. The top of the limiting groove 119 is provided with a notch, and the head of the toggle button 102 extends out of the notch.

[0087] The bottom of the toggle button 102 is provided with two pin ears, each with a pin hole 1022. A connecting plate is provided between the two pin ears, and a guide hole 1021 is provided on the connecting plate. The guide rod 103 passes through the guide hole 1021; the sliding pin I 105 passes through the pin hole 1022.

[0088] See appendix Figure 3 and 7 The top inner wall of the mounting base I104 is provided with longitudinal guide grooves I1041 on both opposite sides. The two ends of the guide rod 103 are respectively engaged in the corresponding guide grooves I1041, so that the guide rod 103 can move longitudinally.

[0089] A push rod top seat 1043 is provided at the bottom center of the mounting base I 104. The top end of the push rod 107 extends into the push rod top seat 1043. The push rod top seat 1043 is used to fix the top end of the push rod 107 to ensure effective transmission of thrust.

[0090] The locking component may be a locking component of the prior art. See the appendix for a specific embodiment. Figure 8 and 9The locking assembly also includes mounting base II 109, telescopic locking head 110, sliding pin II 111, mounting cylinder 113 and fixing pin 114;

[0091] The mounting cylinder 113 is fixed to the bottom end of the inner sleeve 106. The mounting base II 109 is provided with inclined sliding grooves 1091 on two opposite sides. The mounting base II 109 is installed inside the mounting cylinder 113. The mounting cylinder 113 is provided with transverse sliding grooves II 1131 on two opposite sides. The telescopic locking head 110 is provided inside the mounting base II 109. The sliding pin II 111 passes through the transverse sliding grooves II 1131, the inclined sliding grooves 1091 and the telescopic locking head 110.

[0092] Mounting base II 109 is provided with a through hole I 1093 for telescopic head 110 to extend and retract. The height of one end of the inclined slide groove 1091 facing through hole I 1093 is lower than the other end. Mounting cylinder 113 is provided with a through hole II 1133 for telescopic head 110 to extend and retract.

[0093] The bottom of the mounting cylinder 113 is closed. Spring I 112 is disposed inside the mounting cylinder 113, with one end abutting against the inner bottom surface of the mounting cylinder 113 and the other end abutting against the bottom surface of the mounting base II 109; push rod 107 abuts against the mounting base II 109; see appendix. Figure 9 The outer sleeve 117 is provided with a number of locking holes 1171 distributed along the length direction, and the telescopic locking head 110 can cooperate with the locking holes 1171.

[0094] In this embodiment, when the push rod 107 is pushed downward, the mounting base II 109 moves downward relative to the mounting cylinder 113. Due to the restriction of the transverse sliding groove II 1131 on the mounting cylinder 113, the sliding pin II 111 moves away from the through hole I 1093 along the inclined sliding groove 1091, causing the telescopic locking head 110 to retract, releasing the cooperation between the telescopic locking head 110 and the locking hole 1171 of the outer sleeve 117, thereby realizing the unlocking of the locking component relative to the outer sleeve 117.

[0095] When the inner cylinder assembly is adjusted to the appropriate length by pushing the handle, the telescopic locking head 110 is aligned with a locking hole 1171 on the outer sleeve 117. Without pressing the button, under the action of the spring II 120, the mounting base II 109 moves upward relative to the mounting cylinder 113. Due to the restriction of the transverse sliding groove II 1131 on the mounting cylinder 113, the sliding pin II 111 moves along the inclined sliding groove 1091 close to the through hole I 1093, causing the telescopic locking head 110 to extend. The telescopic locking head 110 engages with the locking hole 1171 on the outer sleeve 117, and the locking assembly locks relative to the outer sleeve 117.

[0096] Furthermore, the locking assembly also includes a push rod base 108, which is disposed between the mounting base II 109 and the push rod 107. A boss is provided at the top center of the push rod base 108, and a groove is provided at the top of the boss. The bottom end of the push rod 107 is engaged with the groove.

[0097] For further details, please see the appendix. Figure 9 The top of the mounting base II 109 is provided with an opening groove 1092, and the mounting cylinder 113 is provided with a fixing hole 1134. The fixing pin 114 passes through the inner sleeve 106, the fixing hole 1134 and the opening groove 1092 in sequence to realize the fixed connection between the inner sleeve 106 and the mounting cylinder 113, and the fixing pin 114 can slide in the opening groove 1092.

[0098] The bottom of the mounting cylinder 113 is provided with a flange II 1132, and the top end of the mounting cylinder 113 extends into the inner sleeve 106. The outer diameter of the flange II 1132 is larger than the outer diameter of the inner sleeve 106; see appendix. Figure 2 The top end of the outer sleeve is fixedly connected to a limiting sleeve 116, which can pull the flange II 1132 of the inner cylinder assembly to abut against the limiting sleeve 116. The limiting sleeve prevents the inner cylinder assembly from being pulled out of the outer sleeve 117; and in a specific embodiment, when the flange II 1132 of the inner cylinder assembly abuts against the limiting sleeve 116, the telescopic locking head 110 engages with a locking hole 1171 on the outer sleeve 117, at which time the push handle is at its longest.

[0099] Working principle:

[0100] When the push handle length needs to be adjusted, toggle and press the toggle button 102 to move the sliding pin I 105 to the bottom end of the vertical groove of the right angle slide groove 1061. At this time, the mounting base I 104 moves downward relative to the inner sleeve 106, and the push rod 107 moves downward under the push of the mounting base I 104, pushing the push rod base 108 and the mounting base II 109 to move downward. Due to the restriction of the transverse slide groove II 1131 on the mounting cylinder 113, the sliding pin II 111 moves away from the through hole I 1093 along the inclined slide groove 1091, causing the telescopic locking head 110 to retract, releasing the cooperation between the telescopic locking head 110 and the locking hole 1171 of the outer sleeve 117, and realizing the unlocking of the locking component relative to the outer sleeve 117.

[0101] When the push handle length needs to be locked, the button is released, and the telescopic locking head 110 is aligned with a locking hole 1171 on the outer sleeve 117. Under the action of spring II 120, the mounting base II 109 moves upward relative to the mounting cylinder 113. On the one hand, due to the restriction of the transverse sliding groove II 1131 on the mounting cylinder 113, the sliding pin II 111 moves along the inclined sliding groove 1091 close to the through hole I 1093, causing the telescopic locking head 110 to extend. The telescopic locking head 110 engages with the locking hole 1171 on the outer sleeve 117, and the locking assembly is locked relative to the outer sleeve 117. On the other hand, the push rod base 108, push rod 107, mounting base I 104, and sliding pin I 105 all move upward. When the sliding pin I 105 moves to the connection between the horizontal and vertical grooves of the right-angle sliding groove 1061, under the action of spring II 120, the sliding pin I 105 automatically enters the end of the horizontal groove of the right-angle sliding groove 1061.

[0102] Example 2:

[0103] This embodiment provides a multifunctional children's stroller; see attached document. Figure 1 and 2 It includes a crankshaft 9, a chassis 3, a crank 2, a carrier 14, a rocker arm 4, and a push handle as in Embodiment 1; the push handle is fixedly connected to the rear end of the chassis 3;

[0104] For further details, please see the appendix. Figure 1 and 2 The rear end of the chassis 3 is provided with a sleeve base. The bottom end of the outer sleeve 117 is engaged with the sleeve base by a spring clip 118, and the top end is bent away from the load-bearing body to prevent interference with the load-bearing body 14.

[0105] The crankshaft 9 is rotatably mounted on the chassis 3. When the trolley is pushed, the crankshaft 9 can rotate. One end of the crank 2 is fixedly connected to the crankshaft 9, and the other end is pinned to the carrier 14. The bottom end of the rocker arm 4 is pinned to the chassis 3, and the top end is pinned to the carrier 14.

[0106] A seat 5 is mounted on the carrier 14; a crankshaft 9 is located below the seat 5.

[0107] When the pin joint axis of crank 2 is at its highest, the vertical distance H between the top pin joint axis and the bottom pin joint axis of rocker 4 is greater than or equal to the eccentricity of crank 2.

[0108] The eccentricity of crank 2 ranges from 20mm to 60mm, and the maximum pitch angle θ of seat 5 ranges from 0° to 30°.

[0109] This embodiment provides a multifunctional children's stroller with an eccentricity range of 20mm to 60mm for the crank 2 and a maximum elevation angle range of 0° to 30°. This ensures that the stroller's range of motion is moderate and prevents excessive swaying. It can produce a noticeable undulating sensation to enhance the fun without being too violent, thus ensuring the safety and comfort of infants and young children.

[0110] It should be noted that the maximum pitch angle θ of the seat 5 is the angle between the extreme position of the seat tilting forward and the extreme position of the seat tilting backward when the stroller is rocking.

[0111] Let the horizontal plane where the top pin joint axis of the rocker 4 is located be horizontal plane I, and the horizontal plane where the bottom pin joint axis of the rocker is located be horizontal plane II. The distance between horizontal plane I and horizontal plane II is the aforementioned vertical distance H.

[0112] The eccentricity is the distance between the pin connection axis of crank 2 and bearing 14 and the axis of crankshaft 9;

[0113] Appendix Figure 3 The horizontal line on the carrier 14 is not the simplified entire seat 5, but a portion of the seat 501. The horizontal distance D between the bottom pin axis of the rocker arm 4 and the axis of the crankshaft 9 ranges from 200mm to 400mm, and the vertical distance H between the top pin axis and the bottom pin axis of the rocker arm 4 ranges from 20mm to 340mm. By determining D and H within the above ranges, the geometric constraints formed between the crankshaft 9, the chassis 3, the rocker arm 4, and the carrier 14 are quantified.

[0114] The eccentricity of crank 2 is 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm or 60mm;

[0115] In one specific embodiment, the crank 2 eccentricity is 20mm, the horizontal distance D is 400mm, the vertical length H is 20mm, and the maximum pitch angle θ of the seat surface is 0°.

[0116] In another specific embodiment, the crank 2 eccentricity is 20mm, the horizontal distance D is 400mm, the vertical length H is 300mm, and the maximum pitch angle θ of the seat surface is 5.7°.

[0117] In another specific embodiment, the crank 2 has an eccentricity of 20 mm, a horizontal distance D of 200 mm, a vertical length H of 168 mm, and a maximum pitch angle θ of the seat surface of 11.3°.

[0118] In another specific embodiment, the crank 2 eccentricity is 30mm, the horizontal distance D is 400mm, the vertical length H is 310mm, and the maximum pitch angle θ of the seat surface is 8.7°.

[0119] In another specific embodiment, the crank 2 eccentricity is 30mm, the horizontal distance D is 386mm, the vertical length H is 320mm, and the maximum pitch angle θ of the seat surface is 8.8°.

[0120] In another specific embodiment, the crank 2 eccentricity is 30mm, the horizontal distance D is 294mm, the vertical length H is 204mm, and the maximum pitch angle θ of the seat surface is 11.6°.

[0121] In another specific embodiment, the crank 2 has an eccentricity of 30 mm, a horizontal distance D of 200 mm, a vertical length H of 120 mm, and a maximum pitch angle θ of the seat surface of 17°.

[0122] In another specific embodiment, the crank 2 eccentricity is 50mm, the horizontal distance D is 400mm, the vertical length H is 330mm, and the maximum pitch angle θ of the seat surface is 14.5°.

[0123] In another specific embodiment, the crank 2 has an eccentricity of 50 mm, a horizontal distance D of 230 mm, a vertical length H of 120 mm, and a maximum pitch angle θ of the seat surface of 25°.

[0124] In another specific embodiment, the crank 2 has an eccentricity of 50 mm, a horizontal distance D of 200 mm, a vertical length H of 198 mm, and a maximum pitch angle θ of the seat surface of 30°.

[0125] In another specific embodiment, the crank 2 eccentricity is 60mm, the horizontal distance D is 400mm, the vertical length H is 340mm, and the maximum pitch angle θ of the seat surface is 17.5°.

[0126] In another specific embodiment, the crank 2 has an eccentricity of 60 mm, a horizontal distance D of 350 mm, a vertical length H of 140 mm, and a maximum pitch angle θ of the seat surface of 20°.

[0127] In another specific embodiment, the crank 2 has an eccentricity of 60 mm, a horizontal distance D of 280 mm, a vertical length H of 132 mm, and a maximum pitch angle θ of the seat surface of 25°.

[0128] In another specific embodiment, the crank 2 has an eccentricity of 60 mm, a horizontal distance D of 230 mm, a vertical length H of 132 mm, and a maximum pitch angle θ of the seat surface of 30°.

[0129] Pin holes are provided on both sides of the front of the chassis 3. The lower end of the rocker arm 4 is connected to the pin hole through a pin shaft to achieve pin connection between the lower end of the rocker arm 4 and the chassis 3. The bearing body 14 is provided with an upper lug, and the upper end of the rocker arm 4 is pin connected to the upper lug.

[0130] Crank 2 can be a rod-shaped crank, a fan-shaped crank, or a circular crank;

[0131] When the pin shaft of crank 2 is at its highest point, rocker arm 4 can be set at an angle or vertically; rocker arm 4 can be a straight rod, a curved rod, or an irregularly shaped rod.

[0132] A buffer spring 10 is provided between the carrier 14 and the chassis 3 to buffer the descent of the carrier 14.

[0133] The seats can be equipped with guardrails and backrests to ensure children's safety.

[0134] Working principle:

[0135] Based on the World Health Organization (WHO) standards for child growth, the standard height for 1-year-old boys is 76.0-81.0 cm, and for girls it is 74.0-80.0 cm; for 3-year-old boys it is 90.5-102.5 cm, and for girls it is 89.5-101.0 cm; and for 5-year-old boys it is 105.0-114.5 cm, and for girls it is 104.5-113.5 cm. Based on these figures, the stroller seat height should not be too high and should be appropriate for the child's height. Therefore, when the crankshaft 2 is at its highest point, the distance between the highest point of the seat 5 and the ground should be between 370 mm and 420 mm. Since the crankshaft is located under the seat, the crank dimensions need to be designed based on this data to ensure that the crank does not interfere with the ground or other components when rotating.

[0136] Under the above constraints, the length of crank 2 mainly determines the vertical undulation and swaying amplitude (i.e., pitch angle) of the carrier 14, and the horizontal distance D between the bottom pin of rocker arm 4 and crank shaft 9 mainly controls the swaying amplitude. In this utility model, whether the eccentricity is 60mm and the horizontal distance D is 230mm, or the eccentricity is 50mm and the horizontal distance D is 200mm, or the distance D is 20mm and the distance is 400mm, the stroller can achieve undulation and swaying within a safe and reasonable range, increasing the fun of children riding.

[0137] Example 3:

[0138] This embodiment is based on embodiment 2, and a multifunctional children's stroller also includes a drive wheel 6, a drive shaft 8 and a transmission mechanism 7;

[0139] The drive shaft 8 is rotatably mounted on the chassis 3. The drive wheel 6 is one of the rear wheels of the trolley, and the drive wheel 6 is coaxially connected to the drive shaft 8. The drive shaft 8 drives the crankshaft 9 and crank 2 to rotate through the transmission mechanism 7. The transmission mechanism 7 includes a driving wheel 71, a driven wheel 72, and a transmission component 73.

[0140] In addition, the crankshaft can be rotated by a motor and reduction gears.

[0141] Example 4:

[0142] This embodiment is based on embodiment 3, see appendix. Figure 13 The driving wheel 71 is the driving gear, the driven wheel 72 is the driven gear, and the transmission component 73 is the idler gear;

[0143] The driving gear is mounted on the drive shaft 8 via a long key, and the driving gear can move axially along the drive shaft 8; the driven gear 72 is mounted on the crankshaft 9, and the driving gear and the driven gear 72 mesh with an idler gear.

[0144] An idler gear carrier 74 is fitted onto the drive shaft 8, and an idler gear is rotatably mounted on the idler gear carrier 74; specifically, the idler gear is pin-connected to the idler gear carrier 74.

[0145] The idler gear frame 74 can rotate along the drive shaft 8 and / or move along the axial direction of the drive shaft 8. When changing the walking mode of the trolley, the idler gear frame 74 is turned or moved to make the idler gear engage or disengage with the driven gear 72.

[0146] Furthermore, several driven gears 72 of different specifications can be installed on the crankshaft 9. By moving and rotating the idler gear carrier 74, the driving gear is moved synchronously, so that the idler gear meshes with the driven gears 72 of different specifications, thereby changing the transmission ratio.

[0147] Example 5:

[0148] This embodiment is based on embodiment 3, see appendix. Figure 11 and 14 -16, a sliding sleeve 11 is also coaxially arranged on the drive shaft 8; a guide block 12 is fixedly arranged on the drive shaft 8, and a guide groove I1101 is provided on the inner circumference of the sliding sleeve 11. The guide block 12 is located in the guide groove I1101, so that the sliding sleeve 11 can slide along the drive shaft 8.

[0149] The drive wheel 71 is rotatably connected to the drive shaft 8 (i.e., the drive wheel 71 can rotate relative to the drive shaft 8, and can be connected by bearings); the drive wheel 71 is provided with a number of guide bosses 13 distributed along the circumference at one end facing the sliding sleeve 11, and the sliding sleeve 11 is provided with a number of guide grooves II 1102 distributed along the circumference at one end facing the drive wheel 71. The length direction of both the guide bosses 13 and the guide grooves II 1102 is along the axial direction, and the guide bosses 13 can be matched with the guide grooves II 1102 one by one.

[0150] Driven wheel 72 is coaxially fixed on crankshaft 9, and driving wheel 71 and driven wheel 72 are driven by transmission component 73;

[0151] By disengaging or engaging the drive wheel 71 with the sliding sleeve 11, the synchronous rotation of the drive wheel 71 and the drive shaft 8 can be controlled, thereby switching between rocking mode and flat running mode. Furthermore, the sliding sleeve 11 can be moved by a lever.

[0152] Furthermore, several guide grooves II1102 are provided on the inner circumference of the sleeve 11, and guide bosses 13 are provided on the outer circumference of the drive wheel 71 facing the sleeve 11.

[0153] Furthermore, the driving pulley 71 is a driving pulley, the driven pulley 72 is a driven pulley, the transmission mechanism 7 is a belt, and the outer diameter of the driving pulley is smaller than the outer diameter of the driven pulley;

[0154] Alternatively, the driving wheel 71 is the driving gear, the driven wheel 72 is the driven gear, the transmission mechanism 7 is the idler gear carrier 74 and the idler gear, and the outer diameter of the driving gear is smaller than the outer diameter of the driven gear.

[0155] Alternatively, the driving sprocket 71 can be a driving sprocket, the driven sprocket 72 can be a driven sprocket, the transmission mechanism 7 can be a chain, and the outer diameter of the driving sprocket can be smaller than the outer diameter of the driven sprocket.

[0156] Example 6:

[0157] This embodiment is based on embodiment 3. A clutch mechanism is provided on the drive wheel 6. The clutch mechanism controls the drive wheel 6 to rotate synchronously or disengage from the drive shaft 8. The clutch mechanism can adopt the structure disclosed in patent 200810062430.0.

[0158] 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 push handle, characterized in that, It includes an outer sleeve, an inner sleeve, a handle, a telescopic adjustment assembly, and a locking assembly located at the bottom of the inner sleeve; The telescopic adjustment assembly includes a toggle button, mounting base I, sliding pin I, and push rod; Mounting base I is fitted inside the inner sleeve; the toggle button is located on the top of the handle, and the bottom of the toggle button extends into mounting base I; the toggle button can move longitudinally. The mounting base I is provided with a horizontal sliding groove I, and the inner sleeve is provided with a right-angle sliding groove; the right-angle sliding groove includes a horizontal groove and a vertical groove, with the end of the vertical groove facing the bottom of the inner sleeve; The sliding pin I is provided with a toggle button, a horizontal slide groove I, and a right-angle slide groove along its horizontal direction; One end of the push rod abuts against the bottom of mounting base I, and the other end abuts against the locking assembly, realizing the transmission between the toggle button and the locking assembly; a spring I is provided inside the locking assembly, which can push the push rod upward; When the toggle button is pressed and the sliding pin I is located at the bottom of the vertical groove of the right-angle slide, the locking component is unlocked from the outer sleeve, and the inner sleeve component can slide relative to the outer sleeve to adjust the length of the push handle. When the toggle button is pressed and the sliding pin I is positioned at the end of the horizontal groove of the right-angle slide, the locking assembly locks with the outer sleeve, and the length of the push handle is fixed.

2. The push handle as described in claim 1, characterized in that, The telescopic adjustment assembly also includes a guide rod and spring II; The guide rod is set laterally within the mounting base I and can move longitudinally; the guide rod is perpendicular to the sliding pin I; the guide rod is also fitted with a toggle button, which can move along the length of the guide rod. Spring II is sleeved on the outer periphery of the guide rod and located on the side of the vertical groove of the right-angle slide; one end of spring II abuts against the inner wall of mounting seat I, and the other end abuts against the toggle button.

3. The push handle as described in claim 2, characterized in that, The top inner wall of mounting base I is provided with longitudinal guide grooves I on both opposite sides, and the two ends of the guide rod are respectively engaged in the corresponding guide grooves I.

4. The push handle as described in any one of claims 1-3, characterized in that, The locking assembly also includes mounting base II, telescopic locking head, sliding pin II, mounting sleeve and fixing pin; The bottom end of the mounting sleeve is fixed to the inner sleeve, and the two opposite sides of the mounting base II are provided with inclined sliding grooves; Mounting base II is installed inside the mounting cylinder, and transverse sliding grooves II are provided on two opposite sides of the mounting cylinder; The telescopic clamp head is set inside the mounting base II, and the sliding pin II passes through the transverse slide groove II, the oblique slide groove and the telescopic clamp head. Mounting base II is provided with a through hole I for telescopic head extension and retraction. The height of the inclined slide groove facing through hole I is lower than that of the other end. Mounting cylinder is provided with a through hole II for telescopic head extension and retraction. The bottom of the mounting cylinder is closed, and spring I is set inside the mounting cylinder, with one end abutting against the inner bottom surface of the mounting cylinder and the other end abutting against the bottom surface of the mounting base II; The outer sleeve has several locking holes distributed along its length, and the telescopic locking head can be engaged with these locking holes.

5. A push handle as described in claim 4, characterized in that, A push rod top seat is provided at the bottom center of mounting base I, and the top end of the push rod extends into the push rod top seat; The bottom end of the push rod base abuts against the mounting base II; a boss is provided at the center of the top of the push rod base, and a groove is provided on the top of the boss, with the bottom end of the push rod engaging with the groove.

6. A push handle as described in claim 4, characterized in that, Mounting base II has an opening groove at its top and a fixing hole on its mounting cylinder. The fixing pin passes through the inner sleeve, the fixing hole and the opening groove in sequence, and the fixing pin can slide within the opening groove.

7. A push handle as described in claim 4, characterized in that, The bottom of the mounting cylinder is provided with flange II, and the top of the mounting cylinder extends into the inner sleeve. The outer diameter of flange II is larger than the outer diameter of the inner sleeve. The top of the outer tube is fixedly connected to a limiting sleeve, which can pull the flange II of the inner cylinder assembly to abut against the limiting sleeve.

8. A multifunctional children's stroller, based on a push handle according to any one of claims 1-7, characterized in that, Includes push handle, crankshaft, chassis, crank, carrier, rocker arm, drive wheel, drive shaft and transmission mechanism; The crankshaft is rotatably mounted on the chassis. One end of the crank is fixedly connected to the crankshaft, and the other end is pinned to the carrier. The bottom end of the rocker arm is pinned to the chassis, and the top end is pinned to the carrier. A seat is mounted on the carrier. The crankshaft is located below the seat. The bottom of the push handle is fixedly connected to the rear end of the chassis, and the top is bent away from the load-bearing body. The drive shaft is rotatably mounted on the chassis, and the drive wheel is coaxially connected to the drive shaft. The drive shaft drives the crankshaft and crank to rotate through a transmission mechanism to reduce speed. When the crank pin axis is at its highest point, the vertical distance H between the top and bottom pin axes of the rocker arm is greater than or equal to the crank's eccentricity. The crank eccentricity ranges from 20mm to 60mm, and the maximum pitch angle θ of the seat surface ranges from 0° to 30°.

9. A multifunctional children's stroller as described in claim 8, characterized in that, The horizontal distance D between the bottom pin joint axis of the rocker arm and the axis of the crank shaft ranges from 200mm to 400mm, and the distance between the top pin joint axis and the bottom pin joint axis of the rocker arm ranges from 20mm to 340mm in vertical length H.

10. A multifunctional child stroller as described in claim 8 or 9, characterized in that, A sliding sleeve is also coaxially mounted on the drive shaft; a guide block is fixedly mounted on the drive shaft, and a guide groove I is provided on the inner circumference of the sliding sleeve. The guide block is located in the guide groove I, so that the sliding sleeve can slide along the drive shaft. The drive wheel is rotatably connected to the drive shaft. The end of the drive wheel facing the sliding sleeve is provided with several guide bosses distributed along the circumference, and the end of the sliding sleeve facing the drive wheel is provided with several guide grooves II distributed along the circumference. The length direction of both the guide bosses and the guide grooves II is along the axial direction, and the guide bosses can be matched with the guide grooves II one by one. The driven wheel is coaxially fixed on the crankshaft, and the driving wheel and the driven wheel are driven by a transmission component; When changing the way the rocking horse moves, move the sliding sleeve to engage or disengage it from the drive wheel.

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