Independent suspension damping device for baby carriage

Abstract

The utility model discloses an independent suspension damping device of a baby carriage, which comprises a suspension bracket, a swing arm component and a shock absorber, a wheel is connected with the swing arm component, one end of the shock absorber is connected with the suspension bracket, and the other end of the shock absorber is connected with the swing arm component; the upper portion and the lower portion of the swing arm assembly are movably connected with damping supports respectively, and the other ends of the damping supports are movably connected with the suspension frame. A steering arm is further included, the steering rod is connected with the steering arm, and the two ends of the steering arm are movably connected with the swing arm assembly through connecting arms respectively. In this way, the structure is simplified, the constraint that a universal joint is used as the steering assembly is eliminated, the machining requirement for parts is lowered, the material cost and the machining cost are reduced, and meanwhile the reliability of the steering structure is improved. And the integrated U-shaped suspension bracket is adopted as a main body framework, can be applied to front and rear wheels, and is high in universality and simple in structure. Therefore, transmission accessories are reduced, the structure is simpler, driving is more direct, and the damping effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of children's products, in particular to an independent suspension shock absorbing device used on a baby carriage. Background Art

[0002] With the improvement of living standards, more and more families will buy baby carriages for their children. For example, electric off-road baby carriages are widely popular among children. Traditional shock-absorbing baby carriages generally only use vertical springs for simple shock absorption. Although the impact of road fluctuations is alleviated, the shock absorption effect is not good. The overall stability and comfort of the baby carriage are poor, and the off-road performance is even worse. For this reason, although people have designed some devices with independent suspension shock absorption functions for baby carriages, such as patent CN201620404796.1 discloses a four-wheel independent suspension shock absorption device. However, the existing independent suspension shock absorption devices of this type are still relatively complex in structure, especially usually requiring the use of more complex steering structures such as universal joints, which are costly and have poor reliability. Others use a front and rear integrated suspension frame, which is not versatile enough and will also have an adverse effect on the shock absorption performance. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides an independent suspension shock absorbing device for a baby carriage which has a simpler structure, a more reasonable design, better reliability, a lower cost, a stronger versatility and a better shock absorbing effect.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: an independent suspension shock absorbing device for a baby carriage, comprising a suspension frame, a swing arm assembly and a shock absorber, the wheel is connected to the swing arm assembly, one end of the shock absorber is connected to the suspension frame, and the other end is connected to the swing arm assembly, characterized in that: the upper and lower parts of the swing arm assembly are respectively movably connected with shock absorbing brackets, and the other end of the shock absorbing bracket is movably connected to the suspension frame so that the swing arm assembly forms a structure that can independently move relative to the suspension frame; it also includes a steering arm, the steering rod is connected to the steering arm, and the two ends of the steering arm are respectively movably connected to the swing arm assembly through connecting arms to form a structure that can push the swing arm assembly to perform left and right steering movements.

[0005] Furthermore, the suspension frame is a U-shaped structure, the lower shock-absorbing bracket is pivotally connected to the lower side of the suspension frame, the upper shock-absorbing bracket is pivotally connected to the middle side of the suspension frame, and the lower ends of the upper and lower shock-absorbing brackets are respectively hinged to the upper and lower ends of the swing arm assembly.

[0006] Furthermore, shock absorber seats are respectively arranged on the upper parts of both sides of the suspension frame, the upper end of the shock absorber is pivotally connected to the shock absorber seat, and the lower end is hinged to the upper end of the shock absorbing bracket and the swing arm assembly above.

[0007] Furthermore, fixing pins are respectively provided at both ends of the steering arm, and a spring is sleeved on the fixing pins. One end of the connecting arm is connected and fixed to the swing arm assembly, and the other end is pivotally connected to the fixing pin and pressed on the steering arm, and the spring is pressed on the connecting arm.

[0008] Furthermore, the steering arm is close to the suspension frame, and a guide member with a U-shaped groove at the end is fixed at the bottom of the suspension frame, and the steering arm is movably embedded in the guide member.

[0009] Furthermore, a protruding fixing ear is arranged on the steering arm, and the steering rod is connected and fixed to the fixing ear; a limit arm is arranged on the suspension frame, and the upper part of the steering rod penetrates into the limit arm.

[0010] Preferably, the shock absorbers on both sides are arranged to be tilted outward and downward, so that the up and down vibrations can be dispersed into up and down and horizontal forces, reducing the up and down vibration forces transmitted to the suspension frame, thereby weakening the vibration amplitude and improving the shock absorption effect.

[0011] Furthermore, the upper and lower shock-absorbing brackets are tilted outward and downward and are parallel to each other, so that the forces on the upper and lower shock-absorbing brackets are more balanced, further improving the shock-absorbing effect.

[0012] Furthermore, the wheel drive motor is installed on the swing arm assembly, which can easily realize a dual-wheel drive or four-wheel drive configuration, thereby reducing transmission accessories, making the structure simpler and the drive more direct.

[0013] The utility model realizes the steering of the wheels by using the steering arm to directly pass through the swing arm assemblies on both sides, which not only simplifies the structure, but also gets rid of the constraint of using a universal joint as a steering assembly, reduces the processing requirements for parts, reduces material and processing costs, and improves the reliability of the steering structure. The integrated U-shaped suspension frame is used as the main structure, which can be applied to both front and rear wheels, has strong versatility and simple structure. This not only reduces the transmission accessories, makes the structure simpler, and the drive more direct, but also improves the shock absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the new structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the utility model from a second angle;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model from a third angle;

[0017] Figure 4 This is a schematic diagram of the structure of the utility model from a fourth angle;

[0018] Figure 5 for Figure 1 A partial enlarged view of .

[0019] In the figure, 1 is a suspension frame, 11 is a shock absorber seat, 12 is a limit arm, 2 is a shock absorber bracket, 3 is a swing arm assembly, 4 is a shock absorber, 5 is a steering arm, 51 is a fixing pin, 52 is a fixing ear, 6 is a connecting arm, 7 is a guide member, 8 is a steering rod, 9 is a drive motor, and 10 is a wheel. DETAILED DESCRIPTION

[0020] In this embodiment, refer to Figure 1-5 The independent suspension shock absorbing device of the baby carriage includes a suspension frame 1, a swing arm assembly 3 and a shock absorber 4, the wheel 10 is connected to the swing arm assembly 3, one end of the shock absorber 4 is connected to the suspension frame 1, and the other end is connected to the swing arm assembly 3; the upper and lower parts of the swing arm assembly 3 are respectively movably connected with a group of shock absorbing brackets 2, and the other end (upper end) of the shock absorbing bracket 2 is movably connected to the suspension frame 1, so that the swing arm assembly 3 forms a structure that can independently move relative to the suspension frame 1, thereby forming an independent suspension; it also includes a steering arm 5, the steering rod 8 of the baby carriage is connected to the steering arm 5, and the two ends of the steering arm 5 are respectively movably connected to the swing arm assembly 3 through connecting arms 6.

[0021] The suspension frame 1 is a U-shaped structure, the lower shock-absorbing bracket 2 is pivotally connected to the lower part of the side of the suspension frame 1, the upper shock-absorbing bracket 2 is pivotally connected to the middle part of the side of the suspension frame 1, and the lower ends of the upper and lower shock-absorbing brackets 2 are respectively hinged to the upper and lower ends of the swing arm assembly 3. The shock-absorbing bracket 2 and the suspension frame 1, and the swing arm assembly 3 and the shock-absorbing bracket 2 can both perform relative upward and downward rotational motion.

[0022] Shock absorber seats 11 are respectively arranged on the upper parts of both sides of the suspension frame 1. The upper end of the shock absorber 4 is pivotally connected to the shock absorber seat 11, and the lower end is hinged to the upper end of the shock absorbing bracket 2 and the swing arm assembly 3 above.

[0023] A fixing pin 51 is provided at both ends of the steering arm 5, and a spring (not shown) is sleeved on the fixing pin 51. One end of the connecting arm 6 is connected and fixed to the swing arm assembly 3, and the other end is pivoted to the fixing pin 51 and pressed on the steering arm 5. The spring presses on the connecting arm 6 to play a buffering role. The steering rod 8 can be rotated to link the connecting arm 6 through the steering arm 5, thereby pushing the swing arm assembly 3 to turn left and right, and finally realize the steering of the wheel 10.

[0024] The steering arm 5 is close to the suspension frame 1, and a guide member 12 with a U-shaped groove at the end is fixed at the bottom of the suspension frame 1. The steering arm 5 is movably embedded in the guide member 7. When turning, the steering arm 5 will move left and right, and will always be embedded and guided by the guide member 7 during the movement, which can improve the stability and smoothness of the steering process.

[0025] The steering arm 5 is provided with a protruding fixing ear 52, and the steering rod 8 is connected and fixed to the fixing ear 52; a limit arm 12 is provided on the suspension frame 1, and the upper part of the steering rod 8 penetrates into the limit arm 12 to stabilize the steering rod 8.

[0026] The shock absorbers 4 on both sides are tilted outward and downward, which can disperse the up and down vibrations into up and down and horizontal forces, reduce the up and down vibration forces transmitted to the suspension frame 1, thereby weakening the vibration amplitude and improving the shock absorption effect.

[0027] The upper and lower shock-absorbing brackets 2 are tilted outward and downward and are parallel to each other, so that the forces on the upper and lower shock-absorbing brackets 2 are more balanced, further improving the shock-absorbing effect.

[0028] The driving motor 9 of the wheel 10 is installed on the swing arm assembly, which can easily realize the dual-wheel drive or four-wheel drive configuration, thereby reducing transmission accessories, making the structure simpler and the drive more direct.

[0029] The utility model can install driving motors on the left and right sides of the front wheel and rear wheel suspension frame assemblies respectively to form a four-wheel drive independent suspension electric baby stroller. Alternatively, the driving motor is not installed on the front wheel suspension frame assembly, and the driving motors are only installed on the left and right sides of the rear wheel suspension frame assembly to form a rear wheel dual-drive electric baby stroller. The left and right swing arm assemblies of the front wheels control the direction through the steering rod 8 and the steering arm 5.

[0030] The use of this independent suspension shock-absorbing device allows each wheel to move vertically and be driven independently without affecting other wheels, greatly improving the off-road performance of the electric baby carriage and the comfort of children when riding.

[0031] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. An independent suspension shock absorbing device for a baby carriage, comprising a suspension frame, a swing arm assembly and a shock absorber, wherein the wheel is connected to the swing arm assembly, one end of the shock absorber is connected to the suspension frame, and the other end is connected to the swing arm assembly, characterized in that: The upper and lower parts of the swing arm assembly are respectively movably connected with shock-absorbing brackets, and the other end of the shock-absorbing bracket is movably connected to the suspension frame, so that the swing arm assembly forms a structure that can move independently relative to the suspension frame; it also includes a steering arm, and the steering rod is connected to the steering arm. The two ends of the steering arm are respectively movably connected to the swing arm assembly through connecting arms to form a structure that can push the swing arm assembly to perform left and right steering movements.

2. The independent suspension shock absorbing device for a baby carriage according to claim 1, characterized in that: The suspension frame is a U-shaped structure, the lower shock-absorbing bracket is pivotally connected to the lower side of the suspension frame, the upper shock-absorbing bracket is pivotally connected to the middle side of the suspension frame, and the lower ends of the upper and lower shock-absorbing brackets are respectively hinged to the upper and lower ends of the swing arm assembly.

3. The independent suspension shock absorbing device for a baby carriage according to claim 2, characterized in that: Shock absorber seats are respectively arranged on the upper parts of both sides of the suspension frame. The upper end of the shock absorber is pivotally connected to the shock absorber seat, and the lower end is hinged to the upper end of the shock absorbing bracket and the swing arm assembly.

4. The independent suspension shock absorbing device for a baby carriage according to claim 1, characterized in that: A fixing pin is respectively arranged at both ends of the steering arm, a spring is sleeved on the fixing pin, one end of the connecting arm is connected and fixed to the swing arm assembly, and the other end is pivotally connected to the fixing pin and pressed on the steering arm, and the spring is pressed on the connecting arm.

5. The independent suspension shock absorbing device for a baby carriage according to claim 1, characterized in that: The steering arm is close to the suspension frame, and a guide piece with a U-shaped groove at the end is fixed at the bottom of the suspension frame, and the steering arm is movably embedded in the guide piece.

6. The independent suspension shock absorbing device for a baby carriage according to claim 1, characterized in that: The steering arm is provided with a protruding fixing ear, and the steering rod is connected and fixed with the fixing ear; a limit arm is provided on the suspension frame, and the upper part of the steering rod penetrates into the limit arm.

7. The independent suspension shock absorbing device for a baby carriage according to claim 1, characterized in that: The shock absorbers on both sides are set to face outward and tilt downward.

8. The independent suspension shock absorbing device for a baby carriage according to claim 1, characterized in that: The upper and lower shock-absorbing brackets are arranged to be tilted outward and downward and parallel to each other.

9. The independent suspension shock absorbing device for a baby carriage according to claim 1, characterized in that: The driving motor of the wheel is installed on the swing arm assembly.

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