Steering transmission mechanism of baby carriage

Abstract

The utility model discloses a baby carriage steering transmission mechanism which comprises a steering motor and a steering shaft, the steering shaft penetrates through an output shaft of the steering motor and is coaxially arranged with the output shaft of the steering motor, the output shaft of the steering motor is provided with at least one notch, convex parts are formed on two sides of the notch, the steering shaft extends to form at least one driving arm, and the driving arm is connected with the motor. The driving arm is located in the notch, and steering gaps are reserved between the driving arm and the protruding parts on the two sides of the notch. Compared with the prior art, the electric remote control baby carriage has the advantages that the technical scheme solves the problem that manual steering of an existing electric remote control baby carriage is strenuous, operation difficulty is lowered, user experience is improved, and use safety is remarkably improved. And meanwhile, due to the diversified structures of the single-notch single driving arm and the multi-notch multi-driving arm, the production of the baby carriage with different cost and performance requirements is met, and the applicability and the market competitiveness of the product are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to children's vehicle technical field especially relates to a baby carriage steering transmission mechanism. BACKGROUND

[0002] In the existing baby carriage with electric remote control function, the rotating shaft of the steering wheel and the output rotating shaft of the electric motor adopt fixed connection mode. This connection mode has obvious defects. When not using electric steering, the baby or child needs to exert great force for manual steering. Because during manual steering, the transmission gear inside the electric motor needs to be driven to rotate, which is extremely difficult for the baby or child with less strength, seriously affecting their experience and safety in using the baby carriage. For example, in some actual use scenarios, the baby wants to change the driving direction of the baby carriage, but due to the great effort required for manual steering, the baby cannot steer smoothly, resulting in the baby carriage colliding with surrounding objects, which poses a certain safety hazard. Therefore, it has important practical significance to develop a baby carriage steering transmission mechanism that can solve the problem of laborious manual steering. SUMMARY

[0003] The utility model discloses in order to solve the above insufficient, provide a baby carriage steering transmission mechanism.

[0004] The above-mentioned purpose of the utility model is realized by the following technical scheme: a baby carriage steering transmission mechanism, comprising a steering motor and a steering shaft, the output shaft of the steering motor is provided with at least one notch, the notch forms a convex part on both sides, the steering shaft passes through the output shaft of the steering motor and is coaxially arranged with the motor output shaft, the steering shaft extends at least one drive arm, the drive arm is located in the notch, and the drive arm and the convex part on both sides of the notch leave a steering gap. This key design makes the drive arm able to swing freely at the notch during manual steering, without motion interference with the output shaft of the steering motor, greatly reducing the strength required for manual steering.

[0005] The size of the steering gap can be set according to actual needs, generally set to be able to rotate the steering shaft clockwise and counterclockwise by 30-60 degrees without interference. By adjusting the steering gap, the amplitude of manual easy steering can be accurately controlled. For example, for baby carriages used by younger children with less strength, the steering gap can be appropriately increased to make manual steering easier, and for baby carriages used by older children with relatively more strength, the steering gap can be appropriately reduced to provide more accurate steering control.

[0006] It has diversity in structural form. One is single notch single driving arm structure, that is, there is only one notch on the output shaft of the steering motor, and the steering shaft correspondingly extends a driving arm in the notch, which is simple, easy to manufacture and install. The other is multi-notch multi-driving arm structure, that is, there are multiple notches uniformly distributed on the circumference of the output shaft of the steering motor, and the steering shaft correspondingly extends two or more driving arms, and each driving arm is located in the corresponding notch, which can provide more stable steering transmission.

[0007] In addition, the child stroller steering transmission mechanism further comprises a steering wheel or handle, the upper end of the steering shaft is connected with the steering wheel or handle, and the lower end of the steering shaft is provided with a hook and is hooked on the steering linkage; the steering linkage comprises a flat push rod, a left turning rod, a right turning rod, a left L-shaped wheel shaft and a right L-shaped wheel shaft, the middle part of the flat push rod is provided with a waist-shaped hanging hole, the lower end hook of the steering shaft is hooked on the waist-shaped hanging hole, and the two ends of the flat push rod are respectively hinged to one end of the left turning rod and the right turning rod; the other end of the left turning rod and the right turning rod is respectively fixedly connected with the longitudinal rod part of the left L-shaped wheel shaft and the right L-shaped wheel shaft, and the transverse rod part of the left L-shaped wheel shaft and the right L-shaped wheel shaft extends to the outside and is connected with wheels through wheel bearings.

[0008] Further, the steering motor is directly installed on the frame, the installation structure is simplified, and the overall stability is improved.

[0009] Compared with the prior art, the technical scheme solves the problem of laborious manual steering of the existing electric remote control child stroller, reduces the operation difficulty, improves the user experience, and significantly improves the use safety. At the same time, the diversified structure of single-notch single driving arm and multi-notch multi-driving arm meets the production of child strollers with different cost and performance requirements, improves the applicability and market competitiveness of the product. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a structural schematic view of one side of the utility model.

[0011] Figure 2 is a structural schematic view of the other side of the utility model.

[0012] Figure 3 is a structural schematic view of the steering motor in the utility model.

[0013] Figure 4 is an assembly structural schematic view of the steering motor and the steering shaft in the utility model,

[0014] Figure 5 is a structural schematic view of the steering shaft in the utility model. DETAILED DESCRIPTION

[0015] The utility model will be further described in combination with the drawings.

[0016] As shown in Figures 1 to 5 A stroller steering transmission mechanism, comprising a steering motor 1, a steering shaft 2 and a steering wheel 3 (the steering wheel 3 can also be replaced by a handlebar in other embodiments), the steering shaft 2 passes through the steering motor output shaft and is coaxially arranged with the motor output shaft, the steering motor 1 is directly mounted on the frame, two notches 4 are provided on the output shaft of the steering motor 1, the two notches 4 are uniformly distributed along the circumference, and convex portions 5 are formed on both sides of the notches 4, the steering shaft 2 correspondingly extends two driving arms 6 corresponding to the number of notches 4, each driving arm 6 is located in the corresponding notch 4, and a steering gap 7 is left between the driving arm 6 and the convex portions 5 on both sides of the notch 4. The upper end of the steering shaft 2 is connected with the steering wheel 3, the lower end of the steering shaft 2 is provided with a hook 8 and is hooked on a steering linkage mechanism; the steering linkage mechanism comprises a flat push rod 9, a left turning rod 10, a right turning rod 11, a left L-shaped wheel shaft 12 and a right L-shaped wheel shaft 13, the middle part of the flat push rod 9 is provided with a waist-shaped hanging hole 14, the lower end hook 8 of the steering shaft 2 is hooked on the waist-shaped hanging hole 14, and the two ends of the flat push rod 9 are respectively hinged with one end of the left turning rod 10 and the right turning rod 11; the other end of the left turning rod 10 and the right turning rod 11 is respectively fixedly connected with the longitudinal rod part of the left L-shaped wheel shaft 12 and the right L-shaped wheel shaft 13, and the transverse rod part of the left L-shaped wheel shaft 12 and the right L-shaped wheel shaft 13 extends outward and connects a wheel 15 through a wheel bearing.

[0017] In the manufacture of the stroller steering transmission mechanism of the utility model, first, the appropriate steering motor 1 and steering shaft 2 are selected according to the design requirements. The steering motor 1 needs to have sufficient torque and stability to meet the electric steering requirements; the steering shaft 2 needs to have sufficient strength and rigidity to ensure the steering reliability.

[0018] For the machining of the notches 4 on the output shaft of the steering motor 1, the dimensional accuracy and surface quality need to be ensured to ensure that the driving convex portions 5 on both sides of the notches 4 can effectively drive the steering shaft 2. The machining of the driving arms 6 on the steering shaft 2 also needs to be accurate so that they can be accurately located in the notches 4 and maintain a suitable steering gap 7 with the convex portions 5 on both sides of the notches 4. Generally, the steering gap 7 is set to ensure that the steering shaft 2 can be rotated clockwise and counterclockwise by 30-60 degrees without interference.

[0019] In actual use, when the electric steering function is not used, the infant or child manually controls the steering wheel 3 or handlebar to drive the steering shaft 2 to rotate. At this time, the driving arms 6 on the steering shaft 2 swing in the notches 4 of the output shaft of the steering motor 1. Due to the existence of the steering gap 7, manual steering becomes easy and flexible, greatly reducing the operation difficulty and improving the safety and interest of using the stroller. When the electric steering function needs to be used, the steering motor 1 is started, the convex portions 5 on the output shaft drive the driving arms 6 of the steering shaft 2 to drive the steering shaft 2 to rotate, realizing electric steering.

[0020] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A stroller steering transmission mechanism comprising a steering motor and a steering shaft, the steering shaft passing through a steering motor output shaft and being coaxially arranged with the motor output shaft, characterized in that: The steering motor output shaft is provided with at least one notch, and the notch is formed with convex portions on both sides, the steering shaft extends at least one driving arm, the driving arm is located in the notch, and a steering gap is left between the driving arm and the convex portions on both sides of the notch.

2. The stroller steering transmission of claim 1, wherein: The steering motor output shaft is provided with one notch, and the steering shaft extends one driving arm, and the driving arm is located in the notch.

3. The stroller steering transmission of claim 1, wherein: The steering motor output shaft is provided with two or more notches, which are uniformly distributed along the circumference, and the steering shaft corresponds to extend driving arms corresponding to the number of notches, and each driving arm is located in the corresponding notch.

4. A pram steering gear as claimed in any one of claims 1 to 3 wherein: It also includes a steering wheel or handle, the upper end of the steering shaft is connected to the steering wheel or handle, the lower end of the steering shaft is provided with a hook, and the hook is hooked on the steering linkage; the steering linkage includes a flat push rod, a left turning rod, a right turning rod, a left L-shaped wheel shaft and a right L-shaped wheel shaft, the middle part of the flat push rod is provided with a waist-shaped hanging hole, the lower end of the steering shaft is hooked on the waist-shaped hanging hole, and the two ends of the flat push rod are respectively hinged with one end of the left turning rod and the right turning rod; the other end of the left turning rod and the right turning rod is respectively fixedly connected with the longitudinal rod part of the left L-shaped wheel shaft and the right L-shaped wheel shaft, and the transverse rod part of the left L-shaped wheel shaft and the right L-shaped wheel shaft extends outward and connects the wheels through the wheel bearing.

5. The stroller steering transmission of claim 1, wherein: The steering motor is directly installed on the frame.

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