Baby carriage steering system
By employing a combination design of steering rod, transmission system and toothed belt in the children's vehicle steering system, the problems of inaccurate steering control and large play are solved, achieving precise control of steering angle and improving the operating experience.
Patent Information
- Application Number
- CN202423295591.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing children's stroller steering systems suffer from inaccurate steering control, excessive play, and poor operation. Furthermore, wear and tear becomes increasingly severe over long-term use, leading to increased production costs and more customer complaints.
It adopts a combination design of steering rod, transmission system and toothed belt, and transmits steering action accurately through the transmission structure of driving pulley, driven pulley and torsion arm to ensure the accuracy of steering angle.
It achieves precise control of the steering angle, improves the operating experience, and reduces production costs and customer complaints.
Smart Images
Figure CN223494567U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of children's vehicle technology, and in particular to a children's vehicle steering system. Background Technology
[0002] Currently, most children's stroller steering systems on the market use a four-link structure. Simpler designs use lugs welded to both sides of the pivot to connect the steering cable, employing a strong connection for steering. The main drawback is inaccurate steering control and significant play. This, amplified by the lever effect of the pushrod, results in an unsatisfactory, stiff, and clunky steering experience for the consumer. Furthermore, this structure is difficult to control during production, and over time, wear and tear exacerbates the play problem, increasing production costs and customer complaints. Our design offers a reliable steering system with precise play control. It accurately and effectively transmits steering lever movements, providing a better customer experience. Utility Model Content
[0003] The main objective of this invention is to provide a steering system for children's vehicles in order to effectively solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a children's vehicle steering system, including a steering rod, a transmission system, and a steering system. The steering rod is rotatably mounted on a steering rod fixing sleeve, which is fixed to the frame. The transmission system includes a driving pulley fixed to the bottom of the steering rod, a driven pulley fixed to the frame, and a belt mounted on the driving pulley and the driven pulley. A torsion arm is integrally provided on the lower side of the driven pulley, and the torsion arm is connected to a pull rod. Both ends of the pull rod are bent structures, with a step on the bent portion and an external thread at the head of the bent portion. The end of the torsion arm has a bolt hole, and a nut is used to connect and fix the bent portion of the pull rod to the torsion arm. The steering system includes a right wheel axle and a left wheel axle rotatably mounted at the front end of the frame. A double torsion arm is integrally provided on the right wheel axle, and a rocker arm is integrally provided on the left wheel axle. The rocker arm is rotatably connected to one of the double torsion arms by a pull plate, and the other torsion arm is rotatably connected to the other end of the pull rod. Tires are mounted on the right wheel axle and the left wheel axle.
[0005] Preferably, the surfaces of the driving pulley and the driven pulley are provided with toothed grooves.
[0006] Preferably, the belt is a toothed belt.
[0007] Preferably, the right and left wheel axles are arranged vertically, with their ends bent outward at a near-horizontal angle to facilitate tire installation.
[0008] When in use, turning the steering lever causes the active pulley to rotate, which in turn drives the belt to rotate, which in turn drives the passive pulley to rotate. The torsion arm, which is integrated with the passive pulley, swings and pulls the tie rod to move back and forth. The tie rod drives the double torsion arm and the right wheel axle to rotate, and pulls the tie plate to move left and right. Pulling the tie plate drives the rocker arm and the left wheel axle to rotate, which is transmitted to the tire to complete the steering action.
[0009] The advantages of this invention are: simple structure and toothed belt ensure accurate steering angle. Attached Figure Description
[0010] Appendix Figure 1 This is a frontal three-dimensional structural diagram of the present utility model.
[0011] Appendix Figure 2 This is a three-dimensional structural diagram of the back of this utility model.
[0012] Appendix Figure 3 This is a three-dimensional schematic diagram of the steering mechanism of this utility model.
[0013] Appendix Figure 1 —In section 3, steering rod 1, steering rod fixing sleeve 2, belt 3, driving pulley 4, tie rod 5, driven pulley 6, torsion arm 7, step 8, double torsion arm 9, right wheel axle 10, pull plate 11, rocker arm 12, frame 13, tire 14, left wheel axle 15. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0015] Appendix Figure 1As shown in Figure 3, a children's stroller steering system includes a steering rod, a transmission system, and a steering mechanism. The steering rod 1 is rotatably mounted on a steering rod fixing sleeve 2, which is fixed to a frame 13. The transmission system includes a drive pulley 4 fixed to the bottom of the steering rod 1, a driven pulley 6 fixed to the frame 13, and a belt 3 mounted on the drive pulley 4 and the driven pulley 6. A torsion arm 7 is integrally provided on the lower side of the driven pulley 6, and the torsion arm 7 is connected to a pull rod 5. The pull rod 5 has elbow structures at both ends, and the elbows are provided with a... The step 8 has an external thread at the head of the bend, and the end of the torsion arm 7 has a bolt hole. The bend of the tie rod 5 is connected and fixed to the torsion arm 7 with a nut. The steering system includes a right wheel axle 10 and a left wheel axle 15 rotatably mounted at the front end of the frame 13. A double torsion arm 9 is integrally mounted on the right wheel axle 10, and a rocker arm 12 is integrally mounted on the left wheel axle 15. The rocker arm 12 is rotatably connected to one of the double torsion arms 9 by a pull plate 11. The other torsion arm 9 is rotatably connected to the other end of the tie rod 5. Tires 14 are mounted on the right wheel axle 10 and the left wheel axle 15.
[0016] The surfaces of the active pulley 4 and the passive pulley 6 are provided with toothed grooves.
[0017] The belt is a toothed belt.
[0018] The right axle 10 and the left axle 15 are arranged vertically, and their ends are bent outwards towards the frame 13 at a near-horizontal angle to facilitate the installation of the tire 14.
[0019] In use, rotating the steering lever 1 causes the active pulley 4 to rotate, which in turn drives the belt 3 to rotate, and in turn drives the passive pulley 6 to rotate. The torsion arm 7, which is integrated with the passive pulley 6, swings and pulls the tie rod 5 to move back and forth. The tie rod 5 drives the double torsion arm 9 and the right wheel axle 10 to rotate, and pulls the tie plate 11 to move left and right. Pulling the tie plate 11 drives the rocker arm 12 and the left wheel axle 15 to rotate, which is transmitted to the tire 14 to complete the steering action.
[0020] The advantages of this invention are: simple structure and the toothed belt ensures accurate steering angle.
[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A steering system for a children's stroller, characterized in that: It includes a steering rod, a transmission system, and a steering system. The steering rod is rotatably mounted on a steering rod fixing sleeve, which is fixed to the frame. The transmission system includes a drive pulley fixed to the bottom of the steering rod, a driven pulley fixed to the frame, and a belt mounted on the drive pulley and driven pulley. A torsion arm is integrally provided on the lower side of the driven pulley, and the torsion arm is connected to a tie rod. Both ends of the tie rod are bent structures with a step and an external thread at the head. The end of the torsion arm has a bolt hole, and a nut is used to connect and fix the bend of the tie rod to the torsion arm. The steering system includes a right wheel axle and a left wheel axle rotatably mounted at the front end of the frame. A double torsion arm is integrally provided on the right wheel axle, and a rocker arm is integrally provided on the left wheel axle. The rocker arm is rotatably connected to one of the double torsion arms by a pull plate, and the other torsion arm is rotatably connected to the other end of the tie rod. Tires are mounted on the right wheel axle and the left wheel axle.
2. The stroller steering system according to claim 1, characterized in that: The surfaces of the active pulley and the passive pulley are provided with toothed grooves.
3. The stroller steering system according to claim 1, characterized in that: The belt is a toothed belt.
4. A stroller steering system according to claim 1, characterized in that: The right and left wheel axles are arranged vertically, with their ends bent outwards at an angle close to horizontal to facilitate tire installation.