Child vehicles

Abstract

This utility model belongs to the field of child vehicle technology and discloses a child vehicle. In the first brake position, the first brake is in the released position, and the second brake is separated from the first brake. The drive motor can normally drive the wheel assembly to rotate, allowing the child vehicle to move. In the second brake position, the first brake is restricted from rotating relative to the second brake. Since the first brake is connected to the rotating shaft of the drive motor that controls the movement of the child vehicle, and the second brake is restricted from rotating relative to the fixed base, both the second brake and the rotating shaft of the drive motor connected to the second brake are restricted from rotating relative to the fixed base, thus braking the drive motor. Compared to existing foot brake solutions, this method provides more timely braking and higher safety performance for the child vehicle.

Description

Technical Field

[0001] This utility model relates to the field of children's vehicle technology, and in particular to a children's vehicle. Background Technology

[0002] To ensure the safety of child vehicles, they are equipped with a foot-operated braking system. Specifically, the foot-operated braking system includes a brake pedal, brake components, and a brake disc. The brake disc is fixed to the wheel hub of the wheel assembly. When braking is required, pressing the brake pedal pushes the brake pin into the brake pin hole on the brake disc, thereby stopping the wheel assembly and keeping the child vehicle stationary. When releasing the brake, releasing the brake pedal allows the brake pin to disengage from the brake pin hole under the return action of the spring, thus releasing the braking effect on the wheel assembly and allowing the child vehicle to move.

[0003] In actual use, it was found that the above-mentioned foot-operated braking device has safety issues caused by untimely braking. Utility Model Content

[0004] The purpose of this invention is to provide a child vehicle that can improve the safety of child vehicles.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A child vehicle includes a frame and an electric braking device disposed on the frame, the frame having wheelsets and a drive motor for driving the wheelsets to rotate, the electric braking device comprising:

[0007] The first braking component is connected to the rotating shaft of the walking motor and rotates synchronously with the walking motor;

[0008] A fixed base and a second braking component, wherein the second braking component is movably disposed on the fixed base and is restricted from rotating relative to the fixed base; the second braking component is positioned opposite to the first braking component and is movable in a braking position and a releasing position;

[0009] When the second brake is in the braking position, the second brake cooperates with the first brake to restrict the rotation of the first brake; when the second brake is in the releasing position, the second brake and the first brake separate.

[0010] As one possible implementation of the child vehicle, the child vehicle further includes:

[0011] A braking power assembly is mounted on the fixed base, and the braking power assembly is capable of driving the second brake element to move between a braking position and a de-braking position.

[0012] As one possible implementation of a child vehicle, the frame includes a crossbar, the electric brake device is disposed on the crossbar, the wheel set includes two rear wheels rotatably mounted on the frame, and two drive motors are provided, with the two drive motors driving the two rear wheels to rotate in a one-to-one correspondence;

[0013] Each of the walking motors has a first brake component corresponding to the walking motor on its rotating shaft, and each of the first brake components has a second brake component corresponding to it. The braking power assembly is located between the two second brake components.

[0014] As one possible implementation of a child vehicle, the braking power assembly includes a brake drive member and a transmission mechanism connected between the second brake member and the brake drive member. The brake drive member is provided as one unit, and the brake drive member synchronously drives the two second brake members to move through the transmission mechanism.

[0015] As one possible implementation of a child vehicle, the transmission mechanism includes two lead screws corresponding one-to-one with the two second brake components. The second brake components are provided with threaded holes that cooperate with the lead screws. The threads of the two lead screws are arranged in opposite directions to achieve synchronous driving of the two second brake components to move away from each other or move closer to each other.

[0016] As one possible implementation of a child vehicle, the electric braking device includes a brake control unit, which includes a brake sensor electrically connected to the brake power assembly to control the brake power assembly.

[0017] As one possible implementation of a child vehicle, the frame also includes a push handle, the brake control unit is disposed on the push handle, and the brake control unit also includes a control member that rotates relative to the push handle in a first position and a second position.

[0018] When the control element is in the first position, it contacts the brake sensor to trigger the brake sensor; when the control element is in the second position, it separates from the brake sensor.

[0019] As one possible implementation of the above-mentioned child vehicle, the child vehicle further includes a manual braking device, which includes an elastic reset member, a handbrake control member movably disposed on the fixed base, and a brake transmission member disposed between the handbrake control member and the first brake member.

[0020] The handbrake control component is movable between the handbrake position and the handbrake release position; during the process of the handbrake control component moving from the handbrake release position to the handbrake position, the handbrake control component can push the brake transmission component to move towards the first brake component;

[0021] When the handbrake control member is in the handbrake position, the brake transmission member cooperates with the first brake member to restrict the rotation of the first brake member and allows the elastic reset member to accumulate elastic potential energy; when the handbrake control member is in the handbrake release position, the elastic reset member allows the brake transmission member to move away from the first brake member to separate from the first brake member.

[0022] As one possible embodiment of the aforementioned child vehicle, the handbrake control member is rotatably connected to the fixed base; the handbrake control member is provided with a protrusion and a recess;

[0023] When the handbrake is in the released position, one end of the brake transmission member can enter the recessed portion under the action of the elastic reset member; when the handbrake is in the handbrake position, one end of the brake transmission member abuts against the protrusion to restrict the brake transmission member from moving towards the side closer to the handbrake.

[0024] When the handbrake control component rotates from the handbrake release position to the handbrake position, the inner wall of the recess pushes the brake transmission component to move closer to the second brake component.

[0025] As one possible implementation of the aforementioned child vehicle, the handbrake control unit includes a body portion rotatably mounted on the fixed seat and a control portion extending outside the fixed seat. The body portion has an arc-shaped structure that slides circumferentially with the fixed seat.

[0026] And / or, the protrusions and the recesses are disposed on the side of the body portion facing the second brake member and are arranged along the circumferential direction of the body portion.

[0027] The beneficial effects of this utility model are as follows: In the child vehicle provided by this utility model, the first brake is in the released position, and the second brake is separated from the first brake. The walking motor can normally drive the wheel set to rotate, so that the child vehicle can move. When the second brake is in the braking position, the first brake is restricted from rotating relative to the second brake. Since the first brake is connected to the rotating shaft of the walking motor that controls the movement of the child vehicle, and the second brake is restricted from rotating relative to the fixed seat, the second brake and the rotating shaft of the walking motor connected to the second brake are restricted from rotating relative to the fixed seat, thereby braking the walking motor. Compared with the existing foot brake solution, the child vehicle brakes more promptly and has higher safety performance. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of the child carrier provided in this embodiment of the utility model;

[0029] Figure 2 This is a schematic diagram of the push handle provided in an embodiment of the present utility model;

[0030] Figure 3 This is a first-view structural schematic diagram of a partial structure of the child vehicle provided in an embodiment of the present invention;

[0031] Figure 4 This is a partial cross-sectional view of the child vehicle when the second brake component is in the released position, as provided in this embodiment of the utility model.

[0032] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle;

[0033] Figure 6 This is a partial cross-sectional view of the child vehicle when the second brake component is in the braking position, as provided in this embodiment of the utility model.

[0034] Figure 7 yes Figure 6 A magnified view of a portion of point B in the middle;

[0035] Figure 8 This is a breakdown diagram of a partial structure of the child vehicle provided in this embodiment of the utility model. Figure 1 ;

[0036] Figure 9 This is a breakdown diagram of a partial structure of the child vehicle provided in this embodiment of the utility model. Figure 2 ;

[0037] Figure 10 yes Figure 3 A magnified view of a portion of point I in the middle;

[0038] Figure 11 This is a diagram showing the positional relationship between the brake drive component and the two fixed seats provided in this embodiment of the utility model;

[0039] Figure 12 yes Figure 8 A magnified view of a portion of point C in the middle;

[0040] Figure 13 This is a second-view structural schematic diagram of a partial structure of the child vehicle provided in an embodiment of the present invention;

[0041] Figure 14 yes Figure 13 A magnified view of a portion of point P in the middle;

[0042] Figure 15This is a schematic diagram of the structure of the second brake component provided in this embodiment of the present invention;

[0043] Figure 16 This is a schematic diagram of the structure of the handbrake control component provided in this embodiment of the utility model;

[0044] Figure 17 This is a schematic diagram of the structure of the brake transmission component provided in this embodiment of the utility model;

[0045] Figure 18 This is a third-view structural schematic diagram of a partial structure of the child vehicle provided in this embodiment of the utility model;

[0046] Figure 19 This is a schematic diagram of the structure of the electric braking device and the manual braking device provided in the embodiments of this utility model;

[0047] Figure 20 yes Figure 19 A magnified view of a portion of point K;

[0048] Figure 21 This is a fourth-view structural schematic diagram of a partial structure of a child vehicle provided in an embodiment of this utility model.

[0049] In the picture:

[0050] 100. Electric braking device; 200. Manual braking device;

[0051] 1. Walking motor;

[0052] 2. First brake component; 21. First insert tooth; 22. First slot;

[0053] 3. Fixing base; 31. Anti-rotation protrusion; 32. Positioning protrusion; 33. Mounting protrusion; 34. Mounting groove; 35. Through hole; 36. Through groove;

[0054] 4. Second brake component; 41. Anti-rotation groove; 42. Second insert tooth; 43. Second slot; 44. Guide protrusion; 441. Guide post; 45. Slide groove; 451. Handbrake limiting surface; 452. Handbrake release limiting surface; 46. Receiving groove;

[0055] 5. Brake sensor;

[0056] 6. Brake power assembly; 61. Brake drive component; 62. Worm gear; 63. Drive shaft; 64. Lead screw; 65. Motor mounting bracket;

[0057] 7. Push handle;

[0058] 8. Wheelset; 81. Front wheel; 82. Rear wheel;

[0059] 9. Frame; 10. Crossbar; 20. Motor mounting cavity;

[0060] 30. Handbrake control unit;

[0061] 301. Body part; 3011. Arc-shaped structure; 3012. Recessed part; 3013. Second working surface; 3014. Protrusion; 3015. Connecting part;

[0062] 302. Control Department;

[0063] 40. Brake transmission component; 401. First working surface; 402. Guide groove; 403. Receiving cavity; 404. Third tooth; 405. Third slot;

[0064] 50. Elastic reset component. Detailed Implementation

[0065] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0066] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0067] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0068] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0069] The present invention provides a child vehicle to solve the safety problems that are easily caused by foot braking and to improve braking convenience.

[0070] like Figures 1 to 8 As shown, the child vehicle also includes a walking motor 1, a frame 9, and a wheel set 8. The wheel set 8 is rotatably connected to the frame 9, and the rotating shaft of the walking motor 1 is connected to the wheel set 8 for transmission. The walking motor 1 can drive the wheel set 8 to rotate so that the child vehicle can move.

[0071] It should be noted that the wheel set 8 of the child vehicle has two front wheels 81 and two rear wheels 82, which are rotatably mounted on the frame 9. In this embodiment of the invention, there are two drive motors 1, and the rotating shafts of the two drive motors 1 are connected to the hubs of the two rear wheels 82 to drive the rear wheels 82 to rotate. As for the specific connection method between the rotating shaft of the drive motor 1 and the hub of the corresponding rear wheel 82, it is prior art in the field and will not be described in detail here.

[0072] like Figure 4 , Figures 7 to 9 As shown, the child vehicle also includes an electric braking device 100 mounted on the frame 9. The electric braking device 100 includes a first brake component 2, a fixed base 3, and a second brake component 4. The first brake component 2 is connected to the rotating shaft of the travel motor 1 and rotates synchronously with the travel motor 1. The second brake component 4 is movably mounted on the fixed base 3 and is restricted from rotating relative to the fixed base 3. The second brake component 4 is positioned opposite to the first brake component 2 and can move between a braking position and a released braking position. When the second brake component 4 is in the braking position, it cooperates with the first brake component 2 to restrict the rotation of the first brake component 2. When the second brake component 4 is in the released braking position, it separates from the first brake component 2.

[0073] When the first brake element 2 is in the released position, the second brake element 4 is separated from the first brake element 2, and the drive motor 1 can normally drive the wheel set 8 to rotate, so that the child vehicle can move. When the second brake element 4 is in the braking position, the first brake element 2 is restricted from rotating relative to the second brake element 4. Since the first brake element 2 is connected to the rotation shaft of the drive motor 1 that controls the movement of the child vehicle, and the second brake element 4 is restricted from rotating relative to the fixed base 3, the second brake element 4 and the rotation shaft of the drive motor 1 connected to the second brake element 4 are restricted from rotating relative to the fixed base 3, thereby braking the drive motor 1. Compared with the existing foot brake solution, the child vehicle brakes more promptly and the safety performance of the child vehicle is higher.

[0074] In some embodiments, such as Figures 8 to 11 As shown, the child vehicle also includes a braking power assembly 6, which is mounted on the fixed base 3. The braking power assembly 6 can drive the second brake 4 to move between the braking position and the releasing position to achieve position switching of the second brake 4.

[0075] Specifically, the frame 9 includes a crossbar 10, an electric brake device 100 is disposed on the crossbar 10, and each drive motor 1 has a first brake component 2 corresponding to it on its rotating shaft. Each first brake component 2 has a second brake component 4 corresponding to it, and a brake power assembly 6 is disposed between the two second brake components 4. For example, the crossbar 10 is disposed between the two rear wheels 82.

[0076] When the braking power assembly 6 drives the two second brake components 4 to operate, the two second brake components 4 restrict the rotation of the two first brake components 2 in a one-to-one correspondence, so that the two rear wheels 82 connected to the two travel motors 1 are restricted from rotating, thereby achieving simultaneous braking of the two rear wheels 82.

[0077] In some embodiments, such as Figures 8 to 11 As shown, the brake power assembly 6 includes a brake drive component 61 and a transmission mechanism connecting the second brake component 4 and the brake drive component 61. There is one brake drive component 61, and the brake drive component 61 drives the two second brake components 4 to move synchronously through the transmission mechanism.

[0078] By using a single brake drive component 61 to synchronously drive two second brake components 4 through a transmission mechanism, the number of parts can be reduced, the space occupied by the electric brake device 100 can be reduced, and the cost can be lowered.

[0079] Specifically, the transmission mechanism includes two lead screws 64 that correspond one-to-one with the two second brake components 4. The second brake component 4 is provided with threaded holes that cooperate with the lead screws 64. The threads of the two lead screws 64 are arranged in opposite directions to achieve synchronous driving of the two second brake components 4 to move away from each other or move closer to each other.

[0080] For example, the brake drive 61 is a motor. The brake drive 61 is mounted on the fixed base 3. The motor drives the two lead screws to rotate synchronously. Since the threads of the two lead screws are opposite, the movement directions of the second brake 4, which are threadedly connected to the threaded holes on the two lead screws, are opposite. This causes the two second brake 4 to move away from each other to separate from the first brake 2, or to move closer to each other to cooperate with the first brake 2 and restrict the rotation of the first brake 2.

[0081] In some embodiments, such as Figures 8 to 11 As shown, the transmission mechanism also includes a worm, a worm wheel 62, and a transmission shaft 63. The worm is connected to the output shaft of the brake drive component 61 and is rotatably connected to the fixed seat 3. The worm wheel 62 meshes with the worm. The worm wheel 62 is fixed to the transmission shaft 63, and both ends of the transmission shaft 63 are connected to two lead screws 64 in a corresponding manner.

[0082] The brake drive component 61 drives the worm gear to rotate, which in turn drives the worm wheel 62 to rotate. The transmission shaft 63 and the worm wheel 62 rotate synchronously, and the transmission shaft 63 drives the corresponding first brake component 2 to move synchronously through two lead screws 64.

[0083] Because the worm gear 62 has a self-locking function, the use of brake drive component 61 in conjunction with worm gear 62 and worm can improve the stability of the second brake component 4 when it is in the braking position, and prevent the second brake component 4 from shaking and affecting the braking stability of the child vehicle.

[0084] In some other embodiments, the brake drive unit 61 may also be a dual-axis motor, which has two coaxially arranged output shafts connected to two lead screws in a one-to-one correspondence. With this configuration, a single dual-axis motor can simultaneously drive two lead screws to move the two second brake units 4 respectively.

[0085] In some other embodiments, a gear and rack structure can be used instead of the worm gear 62 structure described above. The gear is fixed to the transmission shaft 63, and the two racks are connected to the two second brake components 4 in a one-to-one correspondence. The two racks are distributed at 180° about the transmission shaft 63. In this way, when the transmission shaft 63 drives the two gears to rotate, the two gears drive the two racks to move, and the two racks move in opposite directions.

[0086] For example, two lead screws 64 and a drive shaft 63 are arranged coaxially, with the drive shaft 63 located between the two lead screws 64. One end of the lead screw 64 is provided with a mounting hole, and both ends of the drive shaft 63 are respectively interference-fitted into the mounting holes of the two lead screws 64 to fix the lead screw 64 to the drive shaft 63.

[0087] In other embodiments, mounting holes may be opened at both ends of the drive shaft 63 to allow one end of each lead screw 64 to be interference-fitted into the mounting holes.

[0088] In some embodiments, such as Figure 1 and Figure 2 As shown, the electric braking device 100 includes a brake control unit, which includes a brake sensor 5. The brake sensor 5 is electrically connected to the brake power assembly 6 to control the brake power assembly 6. Specifically, the brake sensor 5 is electrically connected to the brake drive member 61.

[0089] The brake drive unit 61 can drive the second brake unit 4 to move relative to the fixed base 3 according to the detection result of the brake sensor 5, so that the second brake unit 4 can move in the braking position and the releasing position.

[0090] When the brake sensor 5 senses the user's brake release instruction, the brake drive unit 61 drives the second brake unit 4 to move from the brake release position to the brake position; when the brake sensor 5 senses the user's brake instruction, the brake drive unit 61 drives the second brake unit 4 to move from the brake release position to the brake position.

[0091] Specifically, the frame 9 also includes a push handle 7, and a brake control unit is disposed on the push handle 7. The brake control unit also includes a control member, which rotates relative to the push handle 7 in a first position and a second position. When the control member is in the first position, the control member contacts the brake sensor 5 to trigger the brake sensor 5. When the control member is in the second position, the control member separates from the brake sensor 5.

[0092] When braking is required, the user can push the control component to rotate relative to the push handle 7 to switch the control component to the first position, so that the control component contacts the brake sensor 5 to trigger the brake sensor 5 and generate a brake indication. The brake drive component 61 acts according to the brake indication, so that the second brake component 4 moves to the braking position.

[0093] When it is necessary to release the brake, the user can push the control component to rotate in the opposite direction relative to the push handle 7 to switch the control component to the second position, so that the control component is separated from the brake sensor 5, causing the brake sensor 5 to generate a release brake indication. The brake drive component 61 operates according to the release brake indication, causing the second brake component 4 to move to the release brake position.

[0094] In some embodiments, such as Figure 8 and Figure 9 As shown, of the second brake component 4 and the fixed seat 3, one is provided with an anti-rotation groove 41 and the other is provided with an anti-rotation protrusion 31. The anti-rotation protrusion 31 is slidably disposed in the anti-rotation groove 41 along the first direction.

[0095] For example, the fixing seat 3 is sleeved on the corresponding second brake member 4, the anti-rotation groove 41 is provided on the outer peripheral wall of the second brake member 4, and the anti-rotation protrusion 31 is provided on the inner peripheral wall of the fixing seat 3. By means of the slidable engagement of the anti-rotation protrusion 31 and the corresponding anti-rotation groove 41 along the first direction, the second brake member 4 can be restricted from rotating relative to the fixing seat 3, and the movement of the second brake member 4 along the first direction can be guided, thereby improving the stability of the second brake member 4 during movement.

[0096] For example, there are two anti-rotation protrusions 31, which are symmetrically arranged around the central axis of the second brake member 4. Correspondingly, there are two anti-rotation grooves 41.

[0097] In other embodiments, the anti-rotation protrusion 31 may be disposed on the outer peripheral wall of the first brake member 2, and the anti-rotation groove 41 may be disposed on the inner peripheral wall of the fixing seat 3.

[0098] In some embodiments, such as Figure 5 and Figure 7 As shown, to improve the connection strength between the lead screw 64 and the drive shaft 63, one of the lead screw 64 and the drive shaft 63 is provided with a limiting rotation protrusion, and the other is provided with a limiting rotation groove. The limiting rotation protrusion is inserted into the limiting rotation groove with an interference fit. For example, multiple limiting rotation protrusions are provided, and the multiple limiting rotation protrusions are equally spaced along the circumference of the drive shaft 63. The limiting rotation protrusions and limiting rotation grooves are arranged in a one-to-one correspondence to improve the uniformity of force distribution between the lead screw 64 and the drive shaft 63, and to avoid excessive local force on the lead screw 64 and the drive shaft 63 as much as possible.

[0099] In some embodiments, such as Figure 5 , Figure 7 and Figure 12 As shown, the brake power assembly 6 also includes a motor mounting bracket 65, a brake drive component 61 is mounted on the motor mounting bracket 65, and the two ends of the drive shaft 63 rotatably pass through the fixed base 3; the two fixed bases 3 are connected to form a motor mounting cavity 20, and the motor mounting bracket 65 and the brake drive component 61 are both disposed in the motor mounting cavity 20.

[0100] Specifically, each fixed seat 3 has a mounting groove 34 on the side facing the other fixed seat 3, the openings of the two mounting grooves 34 are opposite each other, and the two fixed seats 3 are connected to form the motor mounting cavity 20. The bottom wall of the mounting groove 34 has a through hole 35 for passing through the drive shaft 63.

[0101] The installation slot 34 not only reduces weight, but also makes full use of the two fixed seats 3 to form the motor mounting cavity 20 to install the motor mounting bracket 65 and the brake drive component 61, thereby improving the integration of the electric brake device 100 and reducing the space occupied by the electric brake device 100.

[0102] For example, the motor mounting bracket 65 includes a U-shaped bracket with two side plates arranged opposite each other along a first direction and a base plate connecting the two side plates. A brake drive member 61 is located on the side of the base plate opposite to the side plates. The output shaft of the brake drive member 61 passes through the base plate and is connected to a worm. The worm and worm wheel 62 are located between the two side plates. The side plates away from the base plate are connected by a connecting rod. Each side plate is provided with a through hole 35, and the two through holes 35 are coaxially arranged.

[0103] In some embodiments, one of the fixing seats 3 is provided with a positioning boss 32, and the other fixing seat 3 is provided with a positioning groove. The positioning boss 32 is inserted into the positioning groove along a first direction, and the two fixing seats 3 are connected by fasteners at their close ends.

[0104] The two fixed seats 3 are positioned by inserting the positioning boss 32 and the positioning groove along the first direction, which makes it easy to connect the two fixed seats 3 with fasteners so that the motor mounting bracket 65 and the brake drive component 61 can be clamped between the two fixed seats 3. Moreover, the two fixed seats 3 are easy to disassemble and assemble, and the disassembly and assembly are efficient.

[0105] For example, the positioning boss 32 is an arc-shaped boss extending circumferentially along the fixed base 3, and correspondingly, the positioning groove is an arc-shaped groove.

[0106] In some embodiments, one mounting base 3 is provided with a plurality of circumferentially spaced mounting protrusions 33, and the other mounting base 3 is provided with mounting grooves corresponding to the mounting protrusions 33 one-to-one. The mounting protrusions 33 are inserted into the corresponding mounting grooves, and the fasteners penetrate through the bottom walls of the mounting protrusions 33 and the mounting grooves. This configuration reduces the torsional resistance requirements of the fasteners and lowers costs.

[0107] In some embodiments, the ends of the two mounting seats 3 that are far apart from each other are both open to form assembly ports, through which the second brake component 4 can be inserted into the corresponding mounting seat 3. This arrangement allows the second brake component 4 to be inserted into the corresponding mounting seat 3 through the assembly ports after the connection of the two mounting seats 3 has been completed.

[0108] In some embodiments, such as Figure 5 , Figures 7 to 9 As shown, one of the first brake component 2 and the second brake component 4 is provided with multiple inserts, and the other is provided with multiple slots; when the second brake component 4 is in the braking position, the multiple inserts are inserted into the multiple slots one by one along the first direction; when the second brake component 4 is in the de-braking position, the inserts are disengaged from the slots along the first direction.

[0109] For example, the first brake member 2 is provided with a plurality of first insert teeth 21 arranged circumferentially, and a first slot 22 is formed between two adjacent first insert teeth 21; the second brake member 4 is provided with a plurality of second insert teeth 42 arranged circumferentially, and a second slot 43 is formed between two adjacent second insert teeth 42.

[0110] When the second brake component 4 is in the braking position, the first insert 21 is inserted into the second slot 43 along the first direction, and the second insert 42 is inserted into the first slot 22 along the first direction. When the second brake component 4 is in the de-braking position, the first insert 21 disengages from the second slot 43 along the first direction, and the second insert 42 disengages from the first slot 22 along the first direction.

[0111] This configuration improves the braking stability of the child vehicle by ensuring that the first brake element 2 and the second brake element 4 remain relatively fixed when the second brake element 4 is in the braking position.

[0112] In some embodiments, such as Figure 8 , Figure 9 , Figures 13 to 21 As shown, the child vehicle also includes a manual braking device 200, which includes a handbrake control member 30 movably mounted on the fixed base 3, a brake transmission member 40 disposed between the handbrake control member 30 and the first brake member 2, and an elastic reset member 50.

[0113] The handbrake control member 30 is active in the handbrake position and the handbrake released position. During the process of moving the handbrake control member 30 from the handbrake released position to the handbrake position, the handbrake control member 30 can push the brake transmission member 40 towards the first brake member 2. When the handbrake control member 30 is in the handbrake position, the brake transmission member 40 cooperates with the first brake member 2 to restrict the rotation of the first brake member 2 and allows the elastic reset member 50 to accumulate elastic potential energy. When the handbrake control member 30 is in the handbrake released position, the elastic reset member 50 allows the brake transmission member 40 to move away from the first brake member 2 to separate from the first brake member 2.

[0114] In addition to using an electric brake device 100 to brake the travel motor 1, a manual brake device 200 can also be used to brake the motor. Specifically, the user controls the handbrake control member 30 to move between the handbrake position and the handbrake release position. When it is necessary to brake the motor using the manual brake device 200, the handbrake control member 30 is switched from the handbrake release position to the handbrake position, the elastic reset member 50 accumulates reset potential energy, and at the same time, the handbrake control member 30 pushes the brake transmission member 40 toward the second brake member 4 to restrict the rotation of the second brake member 4. When it is necessary to release the motor using the manual brake device 200, the brake transmission member 40 moves away from the second brake member 4 under the action of the elastic reset member 50, allowing the second brake member 4 to rotate relative to the brake transmission member 40.

[0115] In some embodiments, such as Figures 14 to 21 As shown, the handbrake control member 30 is rotatably connected to the fixed base 3, and the handbrake control member 30 is provided with a protrusion 3014 and a recess 3012. When the handbrake is in the released position, the elastic reset member 50 allows one end of the brake transmission member 40 to enter the recess 3012; when the handbrake control member 30 is in the handbrake position, one end of the brake transmission member 40 abuts against the protrusion 3014 to restrict the brake transmission member 40 from moving towards the side closer to the handbrake control member 30.

[0116] When the handbrake control member 30 rotates from the handbrake release position to the handbrake position, the inner wall of the recess 3012 pushes the brake transmission member 40 to move closer to the first brake member 2.

[0117] For example, one end of the brake transmission component 40 has a V-shaped protrusion, the V-shaped protrusion has two first working surfaces 401 arranged opposite to each other along the circumference of the fixed seat 3; the recess 3012 is a V-shaped groove, the two inner walls of the V-shaped groove arranged opposite to each other along the circumference of the fixed seat 3 are referred to as the second working surfaces 3013.

[0118] During the rotation of the handbrake control member 30 from the handbrake release position to the handbrake position, according to the rotation direction of the handbrake slot control, one of the second acting surfaces 3013 applies a force to the first acting surface 401, causing the brake transmission member 40 to move closer to the first brake member 2. When the handbrake control member 30 moves to the handbrake position, the end of the brake transmission member 40 away from the V-shaped protrusion engages with the first brake member 2 to restrict the rotation of the first brake member 2. When the handbrake control member 30 continues to be rotated to the handbrake position, the V-shaped protrusion abuts against the protrusion 3014, which restricts the movement of the brake transmission member 40 towards the side closer to the handbrake control member 30, so that the brake transmission member 40 remains in its current position, that is, the brake transmission member 40 remains in the position that restricts the rotation of the first brake member 2. During this process, the elastic reset member 50 is continuously compressed to accumulate elastic potential energy.

[0119] When it is necessary to release the braking of the travel motor 1 by the manual brake device 200, the handbrake control member 30 is controlled to rotate in the opposite direction, so as to rotate from the handbrake position to the handbrake release position, so that the brake transmission member 40 and the recess 3012 are aligned with each other along the axial direction of the fixed base 3, and the limiting effect of the protrusion 3014 on the brake transmission member 40 is lost. The elastic reset member 50 resets and pushes the brake transmission member 40 to move closer to the handbrake control member 30 until the V-shaped protrusion enters the recess 3012 and abuts against the bottom wall of the groove of the recess 3012. At this time, the brake transmission member 40 and the first brake member 2 are separated.

[0120] In some embodiments, such as Figures 14 to 21 As shown, the handbrake control unit 30 includes a body part 301 rotatably mounted on the fixed base 3 and a control part 302 extending outside the fixed base 3. The body part 301 has an arc-shaped structure 3011 that slides in circumferentially with the fixed base 3.

[0121] Specifically, the main body 301 also includes a connector 3015, which is connected to the control unit 302. The outer peripheral wall of the second brake member 4 is provided with a groove 45 extending circumferentially thereon. The arc-shaped structure 3011 and the groove 45 slide in cooperation circumferentially with the second brake member 4. The groove 45 has two inner walls that are arranged opposite to each other circumferentially with the second brake member 4, which are respectively referred to as the handbrake limiting surface 451 and the handbrake release limiting surface 452. When the arc-shaped structure 3011 abuts against the handbrake limiting surface 451, the handbrake control member 30 is in the handbrake position; when the arc-shaped structure 3011 abuts against the handbrake release limiting surface 452, the handbrake control member 30 is in the handbrake release position.

[0122] Not only can the arc structure 3011 and the slide groove 45 slide together in the circumferential direction of the second brake component 4 to guide the rotation of the handbrake control component 30, but it can also limit the rotation of the handbrake control component 30 by using the handbrake limiting surface 451 and the handbrake release limiting surface 452, so as to remind the user when the handbrake control component 30 is rotated to the handbrake position and when the handbrake control component 30 is rotated to the handbrake release position.

[0123] In some embodiments, such as Figures 14 to 21 As shown, the protrusion 3014 and the recess 3012 are provided on the side of the main body 301 facing the second brake member 4, and are arranged along the circumferential direction of the main body 301. This facilitates the use of the handbrake control member 30 for rotation, and in conjunction with the protrusion 3014 and the recess 3012, the brake transmission member 40 can brake or release the first brake member 2.

[0124] In some embodiments, such as Figures 14 to 21As shown, one of the second brake component 4 and the brake transmission component 40 is provided with a guide protrusion 44, and the other is provided with a guide groove 402. The guide protrusion 44 and the guide groove 402 slide in cooperation along the axial direction of the second brake component 4 to guide the movement of the brake transmission component 40, and to ensure that the respective movements of the second brake component 4 and the brake transmission component 40 do not interfere with each other.

[0125] For example, the second brake member 4 is provided with a guide protrusion 44, and the brake transmission member 40 is provided with a guide groove 402. As an alternative, the guide protrusion 44 can be provided on the brake transmission member 40, and the guide groove 402 can be provided on the second brake member 4.

[0126] In some embodiments, such as Figures 14 to 21 As shown, the outer peripheral wall of the second brake component 4 is provided with a receiving groove 46, and the guide protrusion 44 protrudes from the bottom wall of the receiving groove 46. The outer peripheral wall of the brake transmission component 40 and the outer peripheral wall of the second brake component 4 are flush, that is, they are located on the same circumferential surface. This arrangement is conducive to the rationalization of the layout of the child vehicle and improves the integration of the entire child vehicle.

[0127] Exemplarily, the elastic reset member 50 is disposed between the guide protrusion 44 facing the handbrake control member 30 and the brake transmission member 40. Specifically, the elastic reset member 50 is a compression spring, and a guide post 441 protrudes from the guide protrusion 44 facing the handbrake control member 30. The elastic reset member 50 is sleeved on the guide post 441 to prevent the elastic reset member 50 from tilting. The handbrake control member 30 has a receiving cavity 403, and the elastic reset member 50 is placed in the receiving cavity 403. One end of the elastic reset member 50 abuts against the surface of the guide protrusion 44 facing the handbrake control member 30, and the other end abuts against the bottom wall of the groove of the receiving cavity 403 facing the first brake member 2. By opening the receiving cavity 403, not only can the weight be reduced, but the layout of the child vehicle can also be rationalized, and the integration of the entire child vehicle can be improved.

[0128] In some embodiments, such as Figures 14 to 21 As shown, in order to improve the stability of braking the travel motor 1 when the brake transmission component 40 cooperates with the first brake component 2, the brake transmission component 40 is provided with a third insert 404 and a third slot 405 arranged sequentially along the circumference of the second brake component 4 on the side facing the first brake component 2. When the handbrake slot control is in the handbrake position, the third insert 404 is inserted into the first slot 22 along the axial direction of the second brake component 4, and the second insert 42 is inserted into the third slot 405 along the axial direction of the second brake component 4, so as to restrict the relative rotation of the first brake component 2 and the brake transmission component 40.

[0129] In some embodiments, there are two brake transmission components 40, which are slidably connected to two second brake components 4 in a one-to-one correspondence. The handbrake control component 30 is located between the two brake transmission components 40. The handbrake control component 30 is provided with protrusions 3014 and recesses 3012 at both axial ends of the second brake component 4, so that the two brake transmission components 40 can be controlled by one handbrake control component 30, and the two brake transmission components 40 can be operated synchronously.

[0130] like Figure 12 and Figure 21 As shown, each fixed seat 3 has a through groove 36 on its end face facing the other fixed seat 3. One end of the through groove 36 extends to the inner circumferential surface of the fixed seat 3, and the other end extends to the outer circumferential surface of the fixed seat 3. The through grooves 36 on the two fixed seats 3 are arranged opposite each other to form a through hole. The connector 3015 passes through the through hole and exits the fixed seat 3 and is connected to the control unit 302.

[0131] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. Child carrier, characterized in that The vehicle includes a frame and an electric braking device mounted on the frame. The frame has a wheel assembly and a drive motor for rotating the wheel assembly. The electric braking device includes: The first braking component is connected to the rotating shaft of the walking motor and rotates synchronously with the walking motor; A fixed base and a second braking component, wherein the second braking component is movably disposed on the fixed base and is restricted from rotating relative to the fixed base; the second braking component is positioned opposite to the first braking component and is movable in a braking position and a releasing position; When the second brake is in the braking position, the second brake cooperates with the first brake to restrict the rotation of the first brake; when the second brake is in the releasing position, the second brake and the first brake separate.

2. The child carrier of claim 1, wherein, The child vehicle also includes: A braking power assembly is mounted on the fixed base, and the braking power assembly is capable of driving the second brake element to move between a braking position and a de-braking position.

3. The child carrier of claim 2, wherein, The frame includes a crossbar, the electric brake device is mounted on the crossbar, the wheel set includes two rear wheels rotatably mounted on the frame, and there are two drive motors, which drive the two rear wheels to rotate in a one-to-one correspondence. Each of the walking motors has a first brake component corresponding to the walking motor on its rotating shaft, and each of the first brake components has a second brake component corresponding to it. The braking power assembly is located between the two second brake components.

4. The child carrier of claim 3, wherein, The braking power assembly includes a brake drive component and a transmission mechanism connecting the second brake component and the brake drive component. There is one brake drive component, and the brake drive component synchronously drives the two second brake components to move through the transmission mechanism.

5. The child carrier of claim 4, wherein, The transmission mechanism includes two lead screws that correspond one-to-one with the two second brake components. The second brake components are provided with threaded holes that cooperate with the lead screws. The threads of the two lead screws are arranged in opposite directions to achieve synchronous driving of the two second brake components to move away from each other or move closer to each other.

6. The child carrier of claim 2, wherein, The electric braking device includes a brake control unit, which includes a brake sensor. The brake sensor is electrically connected to the brake power assembly to control the brake power assembly.

7. The child carrier of claim 6, wherein, The frame also includes a push handle, the brake control unit is disposed on the push handle, and the brake control unit also includes a control member, which rotates relative to the push handle in a first position and a second position. When the control element is in the first position, it contacts the brake sensor to trigger the brake sensor; when the control element is in the second position, it separates from the brake sensor.

8. The child carrier of claim 2, wherein, The child vehicle also includes a manual braking device, which includes an elastic reset member, a handbrake control member movably disposed on the fixed base, and a brake transmission member disposed between the handbrake control member and the first brake member. The handbrake control component is movable between the handbrake position and the handbrake release position; during the process of the handbrake control component moving from the handbrake release position to the handbrake position, the handbrake control component can push the brake transmission component to move towards the first brake component; When the handbrake control member is in the handbrake position, the brake transmission member cooperates with the first brake member to restrict the rotation of the first brake member and allows the elastic reset member to accumulate elastic potential energy; when the handbrake control member is in the handbrake release position, the elastic reset member allows the brake transmission member to move away from the first brake member to separate from the first brake member.

9. The child vehicle according to claim 8, characterized in that, The handbrake control component is rotatably connected to the fixed base; the handbrake control component is provided with a protrusion and a recess; When the handbrake is in the released position, one end of the brake transmission member can enter the recessed portion under the action of the elastic reset member; when the handbrake is in the handbrake position, one end of the brake transmission member abuts against the protrusion to restrict the brake transmission member from moving towards the side closer to the handbrake. When the handbrake control component rotates from the handbrake release position to the handbrake position, the inner wall of the recess pushes the brake transmission component to move closer to the second brake component.

10. The child carrier of claim 9, wherein, The handbrake control unit includes a body portion rotatably mounted on the fixed base and a control portion extending outside the fixed base. The body portion has an arc-shaped structure that slides circumferentially with the fixed base. And / or, the protrusions and the recesses are disposed on the side of the body portion facing the second brake member and are arranged along the circumferential direction of the body portion.

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