Safety belt buffering device and vehicle safety seat having the safety belt buffering device

• US 9,327,679 B2
• Filed: 09/09/2014
• Issued: 05/03/2016
• Est. Priority Date: 09/13/2013
• Status: Active Grant

• Current Assignee: Wonderland Switzerland AG
• Original Assignee: Wonderland Nurserygoods Company Limited
• Inventors: Cheng, Chin-Ming
• Primary Examiner(s): STEPHAN, BETH A
• Application Number:
  US14/480,649
• Publication Number:
  US 20150076875A1
• Time in Patent Office: 602 Days
• Field of Search: 297/216.11, 297/482, 297/484, 297470-472
• US Class Current: 1/1
• CPC Class Codes: B60N 2/265 Adaptations for seat belts
• CPC Class Codes: B60N 2/2812 for securing the child to the child seat
• CPC Class Codes: B60N 2002/2815 with additional belt accessories, e.g. a belt tension detector
• CPC Class Codes: B60R 2022/286 using deformation of material
• CPC Class Codes: B60R 22/105 for children adaptation of children's seats for seat belts B60N2/265, B60N2/2803
• CPC Class Codes: B60R 22/28 incorporating energy-absorbing devices belt anchors provided with energy-absorbing means for protecting the occupants in case of physical contact therewith B60R21/055; belt retractors comprising energy-absorbing means B60R22/341, B60R22/4676

Abstract

A safety belt buffering device and a related vehicle safety seat are provided. The safety belt buffering device is applied to a shoulder belt. The safety belt buffering device includes a buffering component, a blocking component and an actuating component. The buffering component includes an accommodating space, and the accommodating space is formed through the buffering component. The blocking component is disposed inside the accommodating space. The actuating component is disposed on the shoulder belt. The shoulder belt movably passes through the accommodating space. The actuating component is driven to move into the accommodating space to contact the blocking component when the shoulder belt is pulled by external impact, and the blocking component is structurally deformed to reduce the external impact. The present invention can obviously decrease the impact energy transmitted from the vehicle safety seat to the passenger, so as to protect safety of the passenger.

Claims

1. A safety belt buffering device applied to a shoulder belt, the safety belt buffering device comprising:

a buffering component comprising an accommodating space, the accommodating space being formed through the buffering component;

a blocking component disposed inside the accommodating space; and

an actuating component disposed on the shoulder belt;

wherein the shoulder belt movably passes through the accommodating space, the actuating component is driven to move into the accommodating space to contact the blocking component when the shoulder belt is pulled by an external impact, the blocking component is structurally deformed to reduce the external impact, the buffering component further comprises two openings respectively communicating with opposite sides of the accommodating space, and the shoulder belt movably passes through the accommodating space via the two openings.

2. The safety belt buffering device of claim 1, wherein the actuating component moves into the accommodating space via one of the two openings on the buffering component.

3. The safety belt buffering device of claim 1, wherein a part of the shoulder belt is located between the blocking component and an inner wall of the buffering component.

4. The safety belt buffering device of claim 1, wherein the actuating component comprises two slots adjacent to each other, the shoulder belt inserts into the two slots to assemble with the actuating component.

5. The safety belt buffering device of claim 1, wherein the accommodating space comprises two lateral walls opposite to each other, the blocking component comprises a protruding structure disposed on one of the two lateral walls, a distance between a front end of the blocking component and the other lateral wall is substantially smaller than a width of the actuating component.

6. The safety belt buffering device of claim 1, wherein the safety belt buffering device further comprises a plurality of blocking components disposed inside the accommodating space and arranged along a moving direction of the actuating component relative to the buffering component.

7. The safety belt buffering device of claim 6, wherein the plurality of blocking components respectively comprises protruding structures disposed on opposite lateral walls of the accommodating space, a distance between front ends of the corresponding blocking components respectively disposed on the opposite lateral walls is substantially smaller than a width of the actuating component.

8. The safety belt buffering device of claim 1, wherein the blocking component comprises a linear structure or a non-linear structure.

9. The safety belt buffering device of claim 8, wherein the blocking component comprises a rod structure, a waveform structure or a honeycombed structure.

10. A vehicle safety seat with a shoulder belt, the vehicle safety seat comprising:

a seat whereon a shoulder belt hole is formed, a first end of the shoulder belt movably passing through the shoulder belt hole; and

a safety belt buffering device, comprising;

a buffering component disposed on the seat, the buffering component comprising an accommodating space, and the accommodating space being formed through the buffering component;

a blocking component disposed inside the accommodating space; and

an actuating component disposed on the shoulder belt;

wherein a second end of the shoulder belt located opposite to the first end of the shoulder belt is connected to the seat, the shoulder belt movably passes through the accommodating space to assemble with the actuating component, the actuating component is driven to move into the accommodating space to contact the blocking component when the shoulder belt is pulled by an external impact, and the blocking component is structurally deformed to reduce the external impact.

11. The vehicle safety seat of claim 10, further comprising:

a connecting component and a crotch belt, two ends of the crotch belt being respectively connected to the seat and connecting component, the shoulder belt being connected to the seat via the connecting component and the crotch belt.

12. The vehicle safety seat of claim 10, wherein the seat comprises a backrest, and the buffering component being disposed on a back of the backrest.

13. The vehicle safety seat of claim 10, wherein the buffering component further comprises two openings respectively communicating with opposite sides of the accommodating space, the shoulder belt movably passes through the accommodating space via the two openings.

14. The vehicle safety seat of claim 13, wherein the actuating component moves into the accommodating space via one of the two openings on the buffering component.

15. The vehicle safety seat of claim 10, wherein a part of the shoulder belt is located between the blocking component and an inner wall of the buffering component.

16. The vehicle safety seat of claim 10, wherein the actuating component comprises two slots adjacent to each other, the shoulder belt inserts into the two slots to assemble with the actuating component.

17. The vehicle safety seat of claim 10, wherein the accommodating space comprises two lateral walls opposite to each other, the blocking component comprises a protruding structure disposed on one of the two lateral walls, a distance between a front end of the blocking component and the other lateral wall is substantially smaller than a width of the actuating component.

18. The vehicle safety seat of claim 10, wherein the safety belt buffering device further comprises a plurality of blocking components disposed inside the accommodating space and arranged along a moving direction of the actuating component relative to the buffering component.

19. The vehicle safety seat of claim 18, wherein the plurality of blocking components respectively comprises protruding structures disposed on opposite lateral walls of the accommodating space, a distance between front ends of the corresponding blocking components respectively disposed on the opposite lateral walls is substantially smaller than a width of the actuating component.

20. The vehicle safety seat of claim 10, wherein the blocking component comprises a linear structure or a non-linear structure.

21. The vehicle safety seat of claim 12, wherein the buffering component is detachably disposed on the backrest.