Driving mechanism of baby carriage and baby carriage

Abstract

The utility model discloses a driving mechanism of a baby carriage and the baby carriage. The driving mechanism comprises a shell, a main gear, a transmission gear and a motor. A main gear is rotatably arranged on the shell and used for driving wheels to rotate, a transmission gear is rotatably arranged on the shell and can be meshed with the main gear, a motor is arranged on the shell, a rotating shaft of the motor is connected with a worm, and the worm is meshed with the main gear. And the worm is meshed with the transmission gear. According to the driving mechanism, the power output of the motor is decelerated in a gear and worm transmission matching mode, compared with pure gear transmission, worm transmission has a larger reduction ratio, larger output torque can be achieved, use of gears can be reduced, noise generated in the transmission process can be reduced, and compared with all-gear speed reduction, worm transmission has better durability.

Description

Technical Field

[0001] The utility model relates to the technical field of baby strollers, in particular to a driving mechanism of a baby stroller and the baby stroller. Background Art

[0002] The driving mechanism of a stroller usually includes a housing, a wheel train, a motor and wheels. The wheel train is arranged in the housing, the motor is arranged in the housing, and the motor is connected to a driving gear. The driving gear is meshed with the input gear of the wheel train, and the output gear of the wheel train can drive the wheel to rotate. The entire driving mechanism usually adopts gear transmission completely. The gear reduction ratio is small and the achievable output torque is small. If the output speed of the motor is to be reduced to a suitable speed, more reduction gears are usually required to achieve the required transmission ratio. The full gear transmission has the problems of high transmission noise and easy wear of gears. The use of a large number of reduction gears not only increases the probability of the above problems, but also has a higher material cost. At the same time, the motor shaft needs to be perpendicular to the rotation axis of the gear, which makes the entire transmission system larger and occupies a large space.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] In order to solve the above technical problems, this application adopts the following technical solutions:

[0005] The first object of the utility model is to provide a driving mechanism for a child stroller, comprising:

[0006] case;

[0007] A main gear, the main gear is rotatably disposed on the housing, and the main gear is used to drive the wheels to rotate;

[0008] A transmission gear, the transmission gear is rotatably disposed on the housing, and the transmission gear can mesh with the main gear;

[0009] A motor is arranged in the housing, a rotating shaft of the motor is connected with a worm, and the worm is meshed with the transmission gear.

[0010] Optionally, the rotating shaft of the motor is perpendicular to the rotating axis of the main gear.

[0011] Optionally, a switching mechanism is movably provided on the shell, and a sliding sleeve is provided inside the shell;

[0012] The main gear is slidably mounted on the sliding sleeve;

[0013] The switching mechanism cooperates with the main gear to drive the main gear to slide along the sliding sleeve, so that the main gear and the transmission gear are meshed, or the main gear and the transmission gear are separated.

[0014] Optionally, the switching mechanism comprises a shift fork and an operating member, the shift fork is slidably disposed in the housing, and the shift fork has limit arms disposed on both sides of the main gear along the thickness direction;

[0015] The operating member is movably arranged on the housing, and the operating member is in transmission cooperation with the shift fork;

[0016] Under the action of external force, the operating member moves to push the shift fork to move bidirectionally along the sliding sleeve.

[0017] Optionally, a push-up fitting groove is provided on the shift fork;

[0018] The operating member is rotatably arranged on the housing, and the operating member has a slider portion accommodated in the ejection fitting groove;

[0019] The operating member rotates to make the slider slide along the push-fitting groove to push the shift fork to move along the length direction of the sliding sleeve.

[0020] Optionally, a first coupling sleeve is provided on the main gear, and a second coupling sleeve is rotatably provided on the housing, and the second coupling sleeve is used to connect with the wheel;

[0021] One of the first combining sleeve and the second combining sleeve is sleeved on the other, and the first combining sleeve and the second combining sleeve can rotate synchronously.

[0022] The second object of the present application is to provide a child stroller, comprising:

[0023] Chassis;

[0024] A driven wheel assembly, the driven wheel assembly being connected to the chassis;

[0025] The above-mentioned driving mechanism, the housing of the driving mechanism is connected to the chassis;

[0026] A driving wheel is drivingly connected to a main gear of the driving mechanism.

[0027] Optionally, the driven wheel assembly includes a wheel frame and a driven wheel;

[0028] The wheel frame is rotatably connected to the chassis, and the wheel frame has a locking matching groove;

[0029] The driven wheel is connected to the wheel frame;

[0030] A locking mechanism is arranged on the chassis, and the driven wheel assembly has a locked state and an unlocked state. In the locked state, the locking mechanism is inserted into the locking matching groove, and in the unlocked state, the locking mechanism is disengaged from the locking matching groove.

[0031] Optionally, the locking mechanism includes a sliding member and a lifting block;

[0032] The lifting block can be movably arranged on the chassis up and down;

[0033] The sliding member is slidably disposed on the chassis, and the sliding member and the lifting block are in transmission cooperation;

[0034] The sliding member slides along the bottom plate to drive the lifting block to move up and down, so that the lifting block is inserted into the locking matching groove, or the lifting block is separated from the locking matching groove.

[0035] Optionally, the child stroller comprises a frame, a seating part, a backrest, a push rod and a dining tray;

[0036] The frame is foldably connected to the chassis;

[0037] The push rod is movably connected to the frame and / or chassis;

[0038] The seating component is rotatably connected to the frame, and the backrest and the dining tray are both movably connected to the seating component;

[0039] The child stroller has multiple usage states.

[0040] By adopting the above technical solution, the utility model has the following beneficial effects:

[0041] The drive mechanism of the present application adopts a gear and worm transmission to reduce the power output of the motor. The worm transmission has a larger reduction ratio than pure gear transmission, and can also achieve a larger output torque, reduce the use of gears, reduce the noise generated during the transmission process, and has better durability than full gear reduction.

[0042] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings are part of this application and are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation on the utility model. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0044] Figure 1 A schematic diagram of the three-dimensional structure of a trolley provided in an embodiment of the present application is shown;

[0045] Figure 2 Another perspective view of the trolley provided by the embodiment of the present application is shown;

[0046] Figure 3 A bottom view of a partial structure of a trolley provided in an embodiment of the present application is shown;

[0047] Figure 4 A schematic diagram of the matching structure between the driving mechanism and the active wheel of the cart provided in an embodiment of the present application is shown;

[0048] Figure 5 A schematic diagram showing the internal structure of a driving mechanism of a trolley provided in an embodiment of the present application is shown;

[0049] Figure 6 An exploded view of a driving mechanism of a trolley provided in an embodiment of the present application is shown;

[0050] Figure 7 Another schematic diagram of the internal structure of the trolley provided in an embodiment of the present application is shown;

[0051] Figure 8 An exploded view of a partial structure of a trolley provided in an embodiment of the present application is shown;

[0052] Fig. 9 A schematic diagram showing a child stroller provided by an embodiment of the present application in a sitting stroller state;

[0053] Fig.10 A schematic diagram showing a child stroller provided by an embodiment of the present application in a semi-lying stroller state and a semi-lying rocking bed state;

[0054] Fig.11 A schematic diagram showing a child stroller provided by an embodiment of the present application in a reverse stroller sitting position is shown;

[0055] Fig.12 A schematic diagram showing a child stroller provided by an embodiment of the present application in a reverse semi-lying stroller state and a semi-lying rocking bed state;

[0056] Fig.13 A schematic diagram showing the state of the child stroller provided by the embodiment of the present application in a reverse lying flat state and a lying flat rocking bed state;

[0057] Fig.14 A schematic diagram showing a state of a child stroller provided by an embodiment of the present application in a car state;

[0058] Fig.15A schematic diagram showing a state of a child stroller provided by an embodiment of the present application in a semi-lying state of the chassis and a semi-lying rocking bed with a low chassis;

[0059] Fig.16 A schematic diagram showing a state of a child stroller provided by an embodiment of the present application in a low-chassis lying flat state and a low-chassis lying flat rocking bed;

[0060] Fig.17 A schematic diagram showing a state of a child stroller provided by an embodiment of the present application in a drifting vehicle state;

[0061] Fig.18 A schematic diagram showing a child stroller provided by an embodiment of the present application in a folded state is shown.

[0062] In the figure: 100, driving mechanism; 1, housing; 11, sliding sleeve; 2, main gear; 21, first coupling sleeve; 3, transmission gear; 4, motor; 41, worm; 5, switching mechanism; 51, shift fork; 511, push-up matching groove; 52, operating member; 521, slider; 6, second coupling sleeve; 200, chassis; 300, driven wheel assembly; 301, wheel frame; 3011, locking matching groove; 302, driven wheel ; 400, locking mechanism; 401, sliding member; 402, lifting block; 4021, lifting matching groove; 500, frame; 600, riding part; 700, second battery; 800, backrest; 900, push rod; 1000, dining tray; 2000, driving wheel; 3000, control assembly; 3001, first control member; 3002, second control member; a, first side walking device; b, second side walking device.

[0063] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0065] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0066] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] Embodiment 1

[0068] See also Figures 4 to 7 As shown, the embodiment of the present application provides a driving mechanism 100 of a child stroller, comprising: a housing 1, a main gear 2, a transmission gear 3 and a motor 4. The main gear 2 is rotatably arranged on the housing 1, and the main gear 2 is used to drive the wheel (active wheel 2000) to rotate. The transmission gear 3 is rotatably arranged on the housing 1, and the transmission gear 3 can mesh with the main gear 2. The motor 4 is arranged on the housing 1, and the rotating shaft of the motor 4 is connected with a worm 41, and the worm 41 meshes with the transmission gear 3. The driving mechanism 100 of the present application adopts the transmission matching mode of the gear worm 41 to reduce the power output of the motor 4. The transmission of the worm 41 has a larger reduction ratio than the pure gear transmission, and can also achieve a larger output torque, which can reduce the use of gears, reduce the noise generated during the transmission process, and has better durability than the full gear reduction.

[0069] In some possible implementations, the rotating shaft of the motor 4 is perpendicular to the rotating axis of the main gear 2. Compared with the case where the rotating shaft of the motor 4 is perpendicular to the main gear 2, when the rotating shaft of the motor 4 is parallel to the main gear 2, the structural arrangement of the entire driving mechanism 100 is more reasonable, and each component occupies less space.

[0070] In some possible implementation schemes, a switching mechanism 5 is movably provided on the shell 1, a sleeve 11 is provided inside the shell 1, the main gear 2 is slidably mounted on the sleeve 11, and the switching mechanism 5 and the main gear 2 are in transmission cooperation to drive the main gear 2 to slide along the sleeve 11, so that the main gear 2 and the transmission gear 3 are meshed, or the main gear 2 and the transmission gear 3 are separated.

[0071] The transmission gear 3 can be a composite gear, having a large gear part and a small gear part, wherein the large gear part is meshed with the worm 41, and the small gear part is used to mesh with the main gear 2. When the switching mechanism 5 drives the main gear 2 and the small gear part of the transmission gear 3 to mesh, the rotation of the motor 4 can drive the main gear to rotate. When the motor 4 stops rotating, because the worm 41 and the gear have a self-locking function, the wheel cannot rotate under the action of external force, so that the trolley 10000 is locked (or braked). Therefore, the present application is provided with a switching mechanism 5, which can adjust the separation of the main gear 2 and the transmission gear 3 so that the wheel is unlocked, and the wheel can rotate under the action of external force, so that the effect of pushing the vehicle body by hand without using electric drive is achieved.

[0072] In some possible implementations, the switching mechanism 5 includes a shift fork 51 and an operating member 52, the shift fork 51 is slidably disposed in the housing 1, the shift fork 51 has limit arms disposed on both sides of the main gear 2 along the thickness direction, the operating member 52 is movably disposed in the housing 1, the operating member 52 and the shift fork 51 are in transmission cooperation, and under the action of an external force, the operating member 52 moves to push the shift fork 51 to move bidirectionally along the length direction of the sliding sleeve, thereby driving the main gear to slide. A long shaft may be disposed in the housing 1, the shift fork 51 may be slidably connected to the long shaft, and the long shaft is disposed parallel to the sliding sleeve.

[0073] The operating member 52 is exposed on the housing 1, so that the user can adjust the position of the operating member 52 by stepping on it or bending it by hand to adjust the position of the main gear 2. The operating member 52 can be hinged to the housing 1. When the operating member 52 is rotated upward, the main gear 2 and the transmission gear 3 can be separated through the two limit arms. When the operating member 52 is rotated downward, the main gear 2 can be driven to move along the sliding sleeve 11 through the two limit arms, so that the main gear 2 and the transmission gear 3 are meshed. At this time, when the power supply of the motor 4 is disconnected, the trolley 10000 is in a braking state due to the self-locking function of the worm.

[0074] In some possible implementations, see Figure 6 As shown, a push-up fitting groove 511 is provided on the shift fork 51, and the push-up fitting groove 511 can be an oblique groove. The operating member 52 is rotatably provided on the housing 1, and the operating member 52 has a slider portion 521 accommodated in the push-up fitting groove 511. The operating member 52 rotates so that the slider portion 521 slides along the push-up fitting groove 511 to push the shift fork 51 to move along the length direction of the sliding sleeve.

[0075] In some possible implementations, a first coupling sleeve 21 is provided on the main gear 2, and a second coupling sleeve 6 is rotatably provided on the housing 1, the second coupling sleeve 6 is used to connect the wheel, and one of the first coupling sleeve 21 and the second coupling sleeve 6 is sleeved on the other, and the first coupling sleeve 21 and the second coupling sleeve 6 can rotate synchronously. In the process of the main gear 2 sliding along the sliding sleeve, the first coupling sleeve 21 and the second coupling sleeve 6 maintain a sleeve relationship, and the rotation of the main gear 2 can drive the wheel (driving wheel 2000) to rotate.

[0076] Embodiment 2

[0077] See also Figures 1 to 18 As shown, embodiment 2 of the present application provides a child stroller, comprising: a chassis 200, a driven wheel assembly 300, a driving wheel 2000 and the above-mentioned driving mechanism 100, the driven wheel assembly 300 is connected to the chassis 200, the housing 1 of the driving mechanism 100 is connected to the chassis 200, and the driving wheel 2000 is transmission-connected to the main gear 2 of the driving mechanism 100.

[0078] The driven wheel assembly 300 includes a wheel frame 301 and a driven wheel 302. The wheel frame 301 is rotatably connected to the chassis 200. The wheel frame 301 has a locking matching groove 3011. The driven wheel 302 is connected to the wheel frame 301. A locking mechanism 400 is provided on the chassis 200. The driven wheel assembly 300 has a locked state and an unlocked state. In the locked state, the locking mechanism 400 is inserted into the locking matching groove 3011, the wheel frame 301 cannot rotate, and the driven wheel 302 can only move in a fixed direction. In the unlocked state, the locking mechanism 400 is disengaged from the locking matching groove 3011. The wheel frame 301 can rotate freely, and the driven wheel assembly 300 returns to a universal wheel.

[0079] In some possible implementations, see Figure 8 As shown, the locking mechanism 400 includes a sliding member 401 and a lifting block 402. The lifting block 402 can be movably arranged on the chassis 200 up and down. The sliding member 401 can be slidably arranged on the chassis 200. The sliding member 401 and the lifting block 402 are transmission-matched. The sliding member 401 slides along the chassis 200 to drive the lifting block 402 to move up and down, so that the lifting block 402 is inserted into the locking matching groove 3011, or the lifting block 402 is disengaged from the locking matching groove 3011.

[0080] The lifting block 402 has a lifting matching groove 4021, and a convex shaft is arranged on the sliding member 401, and the convex shaft is inserted into the lifting matching groove 4021. The sliding member 401 slides and acts on the lifting matching groove 4021. The lifting matching groove is an inclined groove to drive the lifting block 402 to move up and down. When the sliding member 401 slides to the first limit position, the convex shaft slides to one end of the inclined groove, and the lifting block 402 can be driven to rise to the highest position. At this time, the lifting block 402 is separated from the locking matching groove 3011. When the sliding member 401 slides to the second limit position, the convex shaft slides to the other end of the inclined groove, and the lifting block 402 can be driven to descend to the lowest position. At this time, the lifting block 402 is inserted into the locking matching groove 3011. The lifting block 402 can be an integrally formed block, and the lifting block 402 can also be two structural members, the matching groove is arranged on the first structural member, and the second structural member can be elastically connected to the first structural member. For example, a longitudinal groove may be provided on the second structure, a limiting shaft may be provided on the first structure, the limiting shaft is inserted into the longitudinal groove, and a spring is compressed and arranged between the first structure and the second structure.

[0081] The child stroller includes a frame 500, a seating component 600, a backrest 800, a push rod 900 and a dining tray 1000. The frame 500 is foldably connected to the chassis 200, the push rod 900 is movably connected to the frame 500 and / or the chassis, the seating component 600 is rotatably connected to the frame 500, the backrest 800 and the dining tray 1000 are both movably connected to the seating component 600, and the child stroller has multiple use states. It should be noted that in the present application, the connection relationship between the push rod 900 and other structures can directly adopt the existing technology.

[0082] The following are several usable states of the stroller:

[0083] Fig. 9 A schematic diagram showing a child stroller provided by an embodiment of the present application in a sitting stroller state is shown. Fig.10 A schematic diagram showing a child stroller provided by an embodiment of the present application in a semi-lying stroller state and a semi-lying rocking bed state. Fig.11 A schematic diagram showing a child stroller provided by an embodiment of the present application in a reverse stroller sitting position is shown. Fig.12 A schematic diagram showing a child stroller provided by an embodiment of the present application in a reverse semi-lying stroller state and a semi-lying rocking bed state is shown. Fig.13 A schematic diagram showing the state of the child stroller provided by the embodiment of the present application in a reverse lying flat state and a lying flat rocking bed state. Fig.14 A schematic diagram showing a state of a child stroller provided by an embodiment of the present application in a car state is shown. Fig.15 A schematic diagram showing a child stroller provided by an embodiment of the present application in a semi-reclining state of the chassis and a semi-reclining rocking bed with a low chassis is shown. Fig.16 A schematic diagram showing a child stroller provided by an embodiment of the present application in a low-bottom lying flat state and a low-bottom lying flat rocking bed is shown. Fig.17 A schematic diagram showing a state of a child stroller provided in an embodiment of the present application in a drifting vehicle state. Fig.18 A schematic diagram showing a child stroller provided by an embodiment of the present application in a folded state is shown.

[0084] Embodiment 3

[0085] See also Figure 1 and Figure 2 As shown, the embodiment of the present application further describes the structure of the stroller for children, which includes: a chassis 200, a frame 500, a seating part 600 and a dining tray 1000. A walking mechanism is arranged on the chassis 200, the frame 500 is connected to the chassis 200, the seating part 600 is connected to the frame 500, the dining tray 1000 is connected to the seating part 600, and a control component 3000 is arranged on the dining tray 1000, and the control component 3000 is connected to the walking mechanism by communication or cable. The tray of the stroller for children of the present application is provided with a control component 3000 to control the walking mechanism, which enriches the functions of the stroller for children, improves the fun, and provides a good user experience for children. The dining tray 1000 is located in the area where children's hands can most conveniently operate. By arranging the control component 3000 on the dining tray 1000, it is convenient for children to reach and operate with their hands.

[0086] In some possible implementations, the walking mechanism includes a first side walking device a and a second side walking device b. The first side walking device a and the second side walking device b can be located on both sides of the chassis 200 along the width direction. The control assembly 3000 is used to control the start and stop of the first side walking device a and the second side walking device b respectively. The first side walking device a and the second side walking device b can be controlled independently. When one of the first side walking device a and the second side walking device b is controlled to move and the other is not moved, the trolley 10000 can be controlled to turn. When both the first side walking device a and the second side walking device b are controlled to move, the child trolley can be controlled to move straight. The design of the control assembly 3000 has the function of training children's driving and control abilities.

[0087] It should be noted that the first side walking device a and the second side walking device b can both include a driving mechanism 100 and a driving wheel 2000, the driving mechanism 100 is connected to the chassis 200, the driving wheel 2000 is connected to the driving mechanism 100, and the driving mechanism 100 can drive the driving wheel 2000 to move.

[0088] In some possible embodiments, the control component 3000 includes a first controller, a first control member 3001 and a second control member 3002. The first controller is arranged on the inner side of the dining plate 1000. The first controller is communicatively connected or cable-connected to the walking mechanism. The first control member 3001 and the second control member 3002 are respectively adapted to the first controller. The first control member 3001 is used to trigger the first controller to control the start and stop of the first side walking device a. The second control member 3002 is used to trigger the first controller to control the start and stop of the second side walking device b.

[0089] The child can hold the first control member 3001 and the second control member 3002 with both hands to respectively control the first side walking device a and the second side walking device b. This structural design not only facilitates the child to control the trolley 10000, but also has the function of training the child's coordination.

[0090] Specifically, the first control member 3001 and the second control member 3002 are respectively arranged on both sides of the dinner plate 1000, so that a child can hold one control member in each hand. The two control members are respectively arranged at both ends of the dinner plate 1000 along the length direction, and do not occupy the middle part of the dinner plate 1000, so as not to affect the placing of dishes on the dinner plate 1000.

[0091] The first control member 3001 and the second control member 3002 can both be operating rods, which are movably arranged on the dinner plate 1000, and a grip is arranged at one end of the operating rod extending from the dinner plate 1000. The operating rod can be tilted forward or backward under the action of an external force, and the corresponding side walking device can be controlled to move forward or backward accordingly. The operating rod is similar to a gear lever, and a grip is arranged at the end, which is convenient for children to hold and operate.

[0092] Optionally, a first communication module is provided on the dining tray 1000, the first communication module is electrically connected to the first controller, a second communication module is provided on the chassis 200, the second communication module is electrically connected to the walking mechanism, and the first communication module and the second communication module are wirelessly connected. The first communication module and the second communication module may be a Bluetooth module or a WIFI module. No cables are provided between the dining tray 1000 and the chassis 200, the appearance is good, and the problem of easy bending and breaking of cables is avoided, thereby improving durability.

[0093] In some possible implementations, a first battery and a first switch are provided on the dining plate 1000 , the first battery is connected to the first controller, and the first switch is adapted to the first controller to trigger the first controller to disconnect or connect the power supply circuit of the control component 3000 .

[0094] The first battery can be a dry cell or a storage battery. An independent battery is used on the dining tray 1000 to provide power. There is no need for the battery on the bottom chassis 200 to lead upward, thus simplifying the structure.

[0095] Optionally, the stroller includes a second battery 700 and a second controller, both of which are arranged on the chassis 200, the second battery 700 is electrically connected to the second controller, and the second controller is electrically connected to the walking mechanism. The second battery 700 is also used to provide walking power for the walking mechanism, and has certain energy storage requirements. The second battery 700 can be a storage battery.

[0096] In some possible implementations, the child stroller includes a driven wheel assembly 300, the driven wheel assembly 300 is connected to the chassis 200, the second battery 700 is a storage battery, the second battery 700 is located between the driven wheel assembly 300 and the walking mechanism, and the second battery 700 is located at the bottom of the chassis 200. The second battery 700 is heavy and is arranged at the bottom, which is conducive to the downward center of gravity of the stroller 10000 and good body stability.

[0097] In some possible embodiments, the child stroller includes a driven wheel assembly 300, which includes a wheel frame 301 and a driven wheel 302, the wheel frame 301 is rotatably connected to the chassis 200, the wheel frame 301 has a locking mating groove 3011, the driven wheel 302 is connected to the wheel frame 301, and a locking mechanism 400 is provided on the chassis 200, and the driven wheel assembly 300 has a locked state and an unlocked state. In the locked state, the locking mechanism 400 is inserted into the locking mating groove 3011, and in the unlocked state, the locking mechanism 400 is disengaged from the locking mating groove 3011.

[0098] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A driving mechanism for a child stroller, characterized in that: include: case; A main gear, the main gear is rotatably disposed on the housing, and the main gear is used to drive the wheels to rotate; A transmission gear, the transmission gear is rotatably disposed on the housing, and the transmission gear can mesh with the main gear; A motor is arranged in the housing, a rotating shaft of the motor is connected with a worm, and the worm is meshed with the transmission gear.

2. The driving mechanism of the baby stroller according to claim 1, characterized in that: The rotating shaft of the motor is perpendicular to the rotating axis of the main gear.

3. The driving mechanism of the baby stroller according to claim 1, characterized in that: A switching mechanism is movably provided on the shell, and a sliding sleeve is provided inside the shell; The main gear is slidably mounted on the sliding sleeve; The switching mechanism cooperates with the main gear to drive the main gear to slide along the sliding sleeve, so that the main gear and the transmission gear are meshed, or the main gear and the transmission gear are separated.

4. The driving mechanism of the baby stroller according to claim 3, characterized in that: The switching mechanism comprises a shift fork and an operating member, wherein the shift fork is slidably disposed in the housing, and the shift fork has limit arms disposed on both sides of the main gear along the thickness direction; The operating member is movably arranged on the housing, and the operating member is in transmission cooperation with the shift fork; Under the action of external force, the operating member moves to push the shift fork to move bidirectionally along the sliding sleeve.

5. The driving mechanism of the baby stroller according to claim 4, characterized in that: The shift fork is provided with a push-up matching groove; The operating member is rotatably arranged on the housing, and the operating member has a slider portion accommodated in the ejection fitting groove; The operating member rotates to make the slider slide along the push-fitting groove to push the shift fork to move along the length direction of the sliding sleeve.

6. The driving mechanism of the baby stroller according to claim 1, characterized in that: A first coupling sleeve is disposed on the main gear, and a second coupling sleeve is rotatably disposed on the housing, wherein the second coupling sleeve is used to connect with the wheel; One of the first combining sleeve and the second combining sleeve is sleeved on the other, and the first combining sleeve and the second combining sleeve can rotate synchronously.

7. A baby stroller, characterized in that: include: Chassis; A driven wheel assembly, the driven wheel assembly being connected to the chassis; The driving mechanism according to any one of claims 1 to 6, wherein the housing of the driving mechanism is connected to the chassis; A driving wheel is drivingly connected to a main gear of the driving mechanism.

8. The child stroller according to claim 7, characterized in that: The driven wheel assembly comprises a wheel frame and a driven wheel; The wheel frame is rotatably connected to the chassis, and the wheel frame has a locking matching groove; The driven wheel is connected to the wheel frame; A locking mechanism is arranged on the chassis, and the driven wheel assembly has a locked state and an unlocked state. In the locked state, the locking mechanism is inserted into the locking matching groove, and in the unlocked state, the locking mechanism is disengaged from the locking matching groove.

9. The child stroller according to claim 8, characterized in that: The locking mechanism includes a sliding member and a lifting block; The lifting block can be movably arranged on the chassis up and down; The sliding member is slidably disposed on the chassis, and the sliding member and the lifting block are in transmission cooperation; The sliding member slides along the bottom plate to drive the lifting block to move up and down, so that the lifting block is inserted into the locking matching groove, or the lifting block is separated from the locking matching groove.

10. The child stroller according to claim 7, characterized in that: Includes frame, ride components, backrest, push bar and tray; The frame is foldably connected to the chassis; The push rod is movably connected to the frame and / or chassis; The seating component is rotatably connected to the frame, and the backrest and the dining tray are both movably connected to the seating component; The child stroller has multiple usage states.

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