Suspension system for absorbing a shock load and stroller therewith

Patent metadata

Field	Value
Publication number	US-9988065-B2
Application number	US-201615241089-A
Country	US
Kind code	B2
Filing date	Aug 19, 2016
Priority date	Aug 20, 2015
Publication date	Jun 5, 2018
Grant date	Jun 5, 2018

Abstract

A suspension system includes a main pivot housing, a swing arm housing, a linkage assembly, and a resilient component. The main pivot housing is disposed on a lower end of a leg of a stroller. An accommodating space is formed inside the main pivot housing. The swing arm housing is pivoted to a side of the main pivot housing. A wheel of the stroller is pivoted to the swing arm housing. The linkage assembly is movably disposed in the accommodating space. The resilient component is disposed between the linkage assembly and a bracket of the stroller. The swing arm housing can be forced to drive the linkage assembly to pivot relative to the main pivot housing for compressing the resilient component, so as to absorb a shock load.

First claim

What is claimed is:

1. A suspension system adapted for a leg of a stroller and for absorbing a shock load, the suspension system comprising:
a main pivot housing disposed on a lower end of the leg of the stroller, an accommodating space being formed inside the main pivot housing;
at least one swing arm housing pivoted to at least one side of the main pivot housing, a wheel of the stroller being pivoted to the at least one swing arm housing;
a linkage assembly movably disposed in the accommodating space, an end of the linkage assembly being pivoted to the main pivot housing and installed on the at least one swing arm housing, and another end of the linkage assembly being pivoted to the at least one swing arm housing and slidably installed on the main pivot housing; and
a resilient component, an end of the resilient component being pivoted to the other end of the linkage assembly, and the other end of the resilient component being coupled to a bracket between the leg and a bottom tube of the stroller;
wherein when the at least one swing arm housing rotates relative to the main pivot housing, the at least one swing arm housing drives the linkage assembly to pivot relative to the main pivot housing, so that the resilient component is compressed by the linkage assembly to absorb the shock load.

2. The suspension system of claim 1 , wherein the linkage assembly comprises:
a first linkage component having a first end and a second end, the first end being pivoted to the main pivot housing and slidably installed on the at least one swing arm housing, and the second end being pivoted to the resilient component; and
a second linkage component having a third end and a fourth end, the third end being pivoted to the at least one swing arm housing and slidably installed on the main pivot housing, and the fourth end being pivoted to a middle portion between the first end and the second end of the first linkage component.

3. The suspension system of claim 2 , further comprising a first pivot shaft passing through the first end of the first linkage component, the main pivot housing and the at least one swing arm housing.

4. The suspension system of claim 3 , wherein a first sliding slot is formed on the at least one swing arm housing, and the first pivot shaft slidably passes through the first sliding slot, so that the first linkage component is slidable relative to the at least one swing arm housing by cooperation of the first pivot shaft and the first sliding slot.

5. The suspension system of claim 3 , further comprising a second pivot shaft passing through the third end of the second linkage component, the main pivot housing, and the at least one swing arm housing.

6. The suspension system of claim 5 , wherein a second sliding slot is formed on the main pivot housing, and the second pivot shaft slidably passes through the second sliding slot, so that the second linkage component is slidable relative to the main pivot housing by cooperation of the second pivot shaft and the second sliding slot.

7. The suspension system of claim 2 , wherein the first linkage component is substantially formed in an L shape, and the fourth end of the second linkage component is pivoted to a turning point of the first linkage component.

8. The suspension system of claim 1 , wherein the at least one swing arm housing is substantially formed in a triangular shape and has a first peak portion, a second peak portion, and a third peak portion, the first peak portion of the at least one swing arm housing is pivoted to the main pivot housing, the wheel is pivoted to the second peak portion of the at least one swing arm housing, and the third peak portion of the at least one swing arm housing is slidably connected to the main pivot housing.

9. The suspension system of claim 8 , wherein an avoiding section is formed on the main pivot housing and located in a position corresponding to the second peak portion of the at least one swing arm housing, and the avoiding section allows the at least one swing arm housing to rotate relative to the main pivot housing without any interference.

10. The suspension system of claim 1 , wherein the main pivot housing is sleeved on the lower end of the leg, and the bracket is pivoted to the bottom tube.

11. The suspension system of claim 1 , wherein the at least one swing arm housing comprises two swing arm housings pivoted to two opposite sides of the main pivot housing.

12. A stroller capable of absorbing a shock load, the stroller comprising:
at least one leg;
at least one bottom tube;
at least one wheel rotatably disposed on the at least one leg;
at least one bracket connected to the at least one leg and the at least one bottom tube; and
at least one suspension system disposed between the at least one leg and the at least one wheel, the at least one suspension system comprising:
a main pivot housing disposed on a lower end of the at least one leg, an accommodating space being formed inside the main pivot housing;
at least one swing arm housing pivoted to at least one side of the main pivot housing, the at least one wheel of the stroller being pivoted to the at least one swing arm housing;
a linkage assembly movably disposed in the accommodating space, an end of the linkage assembly being pivoted to the main pivot housing and installed on the at least one swing arm housing, and another end of the linkage assembly being pivoted to the at least one swing arm housing and slidably installed on the main pivot housing; and
a resilient component, an end of the resilient component being pivoted to the other end of the linkage assembly, and the other end of the resilient component being coupled to the at least one bracket;
wherein when the at least one swing arm housing rotates relative to the main pivot housing, the at least one swing arm housing drives the linkage assembly to pivot relative to the main pivot housing, so that the resilient component is compressed by the linkage assembly to absorb the shock load.

13. The stroller of claim 12 , wherein the linkage assembly comprises:
a first linkage component having a first end and a second end, the first end being pivoted to the main pivot housing and slidably installed on the at least one swing arm housing, and the second end being pivoted to the resilient component; and
a second linkage component having a third end and a fourth end, the third end being pivoted to the at least one swing arm housing and slidably installed on the main pivot housing, and the fourth end being pivoted to a middle portion between the first end and the second end of the first linkage component.

14. The stroller of claim 13 , further comprising a first pivot shaft passing through the first end of the first linkage component, the main pivot housing and the at least one swing arm housing.

15. The stroller of claim 14 , wherein a first sliding slot is formed on the at least one swing arm housing, and the first pivot shaft slidably passes through the first sliding slot, so that the first linkage component is slidable relative to the at least one swing arm housing by cooperation of the first pivot shaft and the first sliding slot.

16. The stroller of claim 14 , further comprising a second pivot shaft passing through the third end of the second linkage component, the main pivot housing, and the at least one swing arm housing.

17. The stroller of claim 16 , wherein a second sliding slot is formed on the main pivot housing, and the second pivot shaft slidably passes through the second sliding slot, so that the second linkage component is slidable relative to the ma

Assignees

• Ruggiero Anthony V
• Haut Robert E
• Wonderland Switzerland Ag

Inventors

• Ruggiero Anthony V
• Haut Robert E

Classifications

• B62B5/064

  adaptable for different users, e.g. by means of pivoting elements · CPC title

• B62B2301/20

  Resilient wheel suspension using springs · CPC title

• B60G2200/132

  with a single trailing arm · CPC title

• B62B9/00 Primary

  Accessories or details specially adapted for children's carriages or perambulators (providing for travelling on snow B62B19/00) · CPC title

• B62B9/18 Primary

  Resilient suspensions of bodies · CPC title