Brake mechanism for a baby carriage

Abstract

The utility model discloses a brake mechanism of baby carriage, including the frame, the outer wall rotationally connected with four wheels of frame, and the outer wall of four wheels all is fixedly equipped with the brake disc, the outer wall fixedly connected with two U type boards of frame, and one of U type board's top fixedly connected with electric push rod, the outer wall fixedly connected with the push board of electric push rod output end. The utility model discloses the integrated design through electric push rod, piston subassembly and L type piston cylinder, has reduced the space occupation, and transmission response is quick and power transmission is stable, avoided the braking force attenuation and the risk of failure caused by the risk of loosening, stretching and corrosion of pull line, and spring can ensure that the brake pad resets fast after pressure relief, and the push board drives double piston rod synchronous work, guarantees the balanced force of left and right brake pad to brake disc, and the braking process is more stable and reliable, and the safety performance of electric baby carriage is improved.

Description

Technical Field

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

[0002] Electric children's vehicles are toy cars designed specifically for children, powered by electricity. They are typically equipped with batteries, motors, and simple control devices, allowing children to experience the joy of driving in a safe and environmentally friendly environment. However, because children's vehicles may encounter slopes, turns, or sudden obstacles during use, without an effective braking system, the vehicle can easily go out of control, leading to falls or collisions and posing safety hazards to children. Therefore, a well-designed braking system is a crucial component for ensuring the safety of children's vehicles, helping children stop the vehicle at any time, and preventing accidents.

[0003] In existing technologies, traditional mechanical brakes have complex structures and occupy a large space, increasing the weight of the vehicle and manufacturing costs. Their braking process relies on steel wires, which are prone to loosening, stretching, or even corrosion after long-term use, leading to slow braking response, reduced braking force, and the risk of failure. Therefore, we propose a braking mechanism for children's vehicles to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a braking mechanism for a children's stroller.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A braking mechanism for a children's stroller includes a frame. Four wheels are rotatably connected to the outer wall of the frame, and brake discs are fixedly fitted onto the outer walls of all four wheels. Two U-shaped plates are fixedly connected to the outer wall of the frame. An electric push rod is fixedly connected to the top of one of the U-shaped plates. A push plate is fixedly connected to the outer wall of the output end of the electric push rod. Two piston rods are fixedly connected to the outer wall of the push plate. An active piston is fixedly connected to one end of each of the two piston rods. An L-shaped piston cylinder is slidably fitted onto the outer wall of each of the two active pistons. A maintenance hole is provided on the outer wall of each of the two L-shaped piston cylinders. An end cap is fixedly connected to the inner wall of each of the two maintenance holes. A brake assembly is provided inside each of the L-shaped piston cylinders. Connecting posts are fixedly connected to the outer walls of each of the two L-shaped piston cylinders, and one end of each connecting post is fixedly connected to the outer wall of the frame.

[0007] Preferably, the brake assembly includes two driven pistons, and springs are fixedly connected to the outer walls of the two end caps. One end of each spring is fixedly connected to the outer wall of the two driven pistons. I-shaped rods are fixedly connected to the outer walls of the two driven pistons, and brake pads are fixedly connected to one end of each I-shaped rod. When braking, the brake pads are in close contact with the brake disc, and the wheel is braked by the friction between them.

[0008] Preferably, the outer wall of the frame has two through holes, and the inner walls of the two through holes are respectively fixedly connected to the outer walls of two L-shaped piston cylinders.

[0009] Preferably, a sealing gasket is fitted on the outer wall of the end cap to increase the sealing between the end cap and the maintenance hole.

[0010] Preferably, the outer walls of the two driven pistons are slidably connected to the inner walls of the two L-shaped piston cylinders, and the L-shaped piston cylinders provide a sealed movement space for the driving piston and the driven piston, so that the pressure generated by the driving piston squeezing the medium can be effectively transmitted to the driven piston.

[0011] Preferably, the outer walls of both the active piston and the driven piston are fitted with multiple rubber sealing rings, which increase the sealing performance between the active piston, the driven piston, and the L-shaped piston cylinder.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] This solution reduces space occupation through the integrated design of electric push rod, piston assembly and L-shaped piston cylinder, and has a rapid transmission response and stable force transmission. It avoids the risk of brake force attenuation and failure caused by loose, stretched and corroded pull cables. At the same time, the spring can ensure that the brake pads quickly return to their original position after the pressure is released. The push plate drives the double piston rods to work synchronously, ensuring that the left and right brake pads apply equal force to the brake disc. The braking process is more stable and reliable, and the safety performance of the electric children's vehicle is improved. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of a braking mechanism for a children's stroller proposed in this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of a braking mechanism for a children's stroller proposed in this utility model.

[0017] Figure 3 This utility model proposes a braking mechanism for a children's stroller. Figure 2 A magnified structural diagram of part A in the diagram.

[0018] In the diagram: 1. Frame; 2. Wheel; 3. Brake disc; 4. U-shaped plate; 5. Electric push rod; 6. Push plate; 7. Piston rod; 8. Active piston; 9. L-shaped piston cylinder; 10. End cap; 11. Spring; 12. Driven piston; 13. I-shaped rod; 14. Brake pad; 15. Connecting column. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Depend on Figures 1-3 As shown, a braking mechanism for a children's vehicle is disclosed, including a frame 1. Four wheels 2 are rotatably connected to the outer wall of the frame 1 via existing axles. Brake discs 3 are fixedly fitted on the outer walls of the four wheels 2. The wheels 2 provide the object of braking. When the brake pads 14 contact the brake discs 3, the wheels 2 can be braked by friction.

[0021] Two U-shaped plates 4 are fixedly connected to the outer wall of the frame 1. An electric push rod 5 is fixedly connected to the top of one of the U-shaped plates 4. The electric push rod 5 is a proportional control type. A push plate 6 is fixedly connected to the outer wall of the output end of the electric push rod 5. Two piston rods 7 are fixedly connected to the outer wall of the push plate 6. The push plate 6 can transmit the power of the electric push rod 5 to the two piston rods 7 at the same time, ensuring that the two piston rods 7 move synchronously.

[0022] One end of each of the two piston rods 7 is fixedly connected to an active piston 8. The outer walls of the two active pistons 8 are slidably fitted with L-shaped piston cylinders 9. Under the push of the piston rods 7, the medium inside the L-shaped piston cylinders 9 is squeezed, converting mechanical energy into pressure energy, which provides power to drive the driven piston 12 to move.

[0023] The outer wall of the frame 1 has two through holes. The inner walls of the two through holes are fixedly connected to the outer walls of the two L-shaped piston cylinders 9 respectively. The L-shaped piston cylinders 9 provide a sealed movement space for the active piston 8 and the driven piston 12, so that the pressure generated by the active piston 8 squeezing the medium can be effectively transmitted to the driven piston 12. Its L-shaped structure makes reasonable use of space and adapts to the structural layout of the children's vehicle.

[0024] Maintenance holes are provided on the outer walls of both L-shaped piston cylinders 9. End caps 10 are fixedly connected to the inner walls of both maintenance holes by existing screws. Sealing gaskets are fitted on the outer walls of the end caps 10. Connecting posts 15 are fixedly connected to the outer walls of both L-shaped piston cylinders 9. One end of each connecting post 15 is fixedly connected to the outer wall of the frame 1.

[0025] The L-shaped piston cylinder 9 is equipped with a brake assembly, which can be added to enable braking of both the front and rear wheels. The brake assembly includes two driven pistons 12, the outer walls of which are slidably connected to the inner walls of the two L-shaped piston cylinders 9. The outer walls of both the driving piston 8 and the driven piston 12 are fitted with multiple rubber sealing rings.

[0026] Springs 11 are fixedly connected to the outer walls of both end caps 10. One end of each spring 11 is fixedly connected to the outer wall of the two driven pistons 12. During braking, the springs 11 are compressed by the driven pistons 12 to store elastic potential energy. When the braking ends and the electric push rod 5 retracts, the springs 11 release elastic potential energy to push the driven pistons 12 to reset, so that the brake pads 14 and the brake discs 3 can be quickly separated.

[0027] Both driven pistons 12 have I-shaped rods 13 fixedly connected to their outer walls. Each of the two I-shaped rods 13 has a brake pad 14 fixedly connected to one end. When braking, the brake pad 14 is in close contact with the brake disc 3, and the wheel 2 is braked by the friction between them.

[0028] The braking assembly is controlled by the linkage between the existing foot brake pedal and a potentiometer (standard model). When the child presses the foot brake pedal, the pedal drives the potentiometer to rotate and output an electrical signal corresponding to the pressing angle. The existing controller then receives this signal in real time and converts it into a PWM command, driving the electric push rod 5 to extend and retract proportionally. The deeper the foot brake pedal is pressed, the longer the electric push rod 5 extends, which in turn applies progressive braking force to the brake disc 3 through the push plate 6, piston assembly, and brake pads 14. After the foot brake pedal is released, the electric push rod 5 retracts, and the brake pads 14 disengage under the action of the spring 11.

[0029] Working principle: When braking is required, the electric push rod 5 is activated, and its output end drives the push plate 6 to move, causing the two piston rods 7 and the active piston 8 fixed on the plate to slide inside the L-shaped piston cylinder 9. The active piston 8 compresses the medium (oil or gas) inside the L-shaped piston cylinder 9, pushing the driven piston 12 to overcome the resistance of the spring 11 and move towards the brake disc 3. The driven piston 12 drives the I-shaped rod 13 and the brake pad 14 fixed at its end to press against the corresponding brake disc 3, and the wheel 2 is braked by friction. When the electric push rod 5 is retracted, the pressure is released, the rebound force of the spring 11 pushes the driven piston 12 to reset, the brake pad 14 separates from the brake disc 3, and the braking is released. Throughout the process, the connecting column 15 is used to fix the position of the L-shaped piston cylinder 9, the end cover 10 and the rubber sealing ring ensure a seal, the brake disc 3 rotates synchronously with the wheel 2, and the frame 1 serves as the overall support structure.

[0030] It should be noted that when actually put into use, an existing technology controller can be added. The controller is electrically connected to the electric push rod 5 and the potentiometer to facilitate the control of the overall operation. The electric push rod 5 and the potentiometer are connected to the existing battery through existing cables.

[0031] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0032] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A braking mechanism for a children's stroller, comprising a frame (1), characterized in that, Four wheels (2) are rotatably connected to the outer wall of the frame (1). Brake discs (3) are fixedly fitted on the outer walls of the four wheels (2). Two U-shaped plates (4) are fixedly connected to the outer wall of the frame (1). An electric push rod (5) is fixedly connected to the top of one of the U-shaped plates (4). A push plate (6) is fixedly connected to the outer wall of the output end of the electric push rod (5). Two piston rods (7) are fixedly connected to the outer wall of the push plate (6). An active piston (8) is fixedly connected to one end of each of the two piston rods (7). An L-shaped piston cylinder (9) is slidably fitted on the outer wall of each of the two active pistons (8). Maintenance holes are opened on the outer walls of each of the two L-shaped piston cylinders (9). End caps (10) are fixedly connected to the inner walls of each of the two maintenance holes. A brake assembly is provided inside the L-shaped piston cylinder (9). A connecting post (15) is fixedly connected to the outer wall of each of the two L-shaped piston cylinders (9). One end of each connecting post (15) is fixedly connected to the outer wall of the frame (1).

2. The braking mechanism of a children's stroller according to claim 1, characterized in that, The brake assembly includes two driven pistons (12), and springs (11) are fixedly connected to the outer walls of the two end caps (10). One end of each spring (11) is fixedly connected to the outer wall of the two driven pistons (12), and I-shaped rods (13) are fixedly connected to the outer walls of the two driven pistons (12). One end of each I-shaped rod (13) is fixedly connected to a brake pad (14).

3. The braking mechanism of a children's stroller according to claim 1, characterized in that, The outer wall of the frame (1) has two through holes, and the inner walls of the two through holes are fixedly connected to the outer walls of the two L-shaped piston cylinders (9).

4. The braking mechanism of a children's stroller according to claim 1, characterized in that, The outer wall of the end cap (10) is fitted with a sealing gasket.

5. The braking mechanism of a children's stroller according to claim 2, characterized in that, The outer walls of the two driven pistons (12) are slidably connected to the inner walls of the two L-shaped piston cylinders (9).

6. The braking mechanism of a children's stroller according to claim 2, characterized in that, The outer walls of both the active piston (8) and the driven piston (12) are fitted with multiple rubber sealing rings.

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