- Patent Number:
12208,766
- Appl. No:
17/623092
- Application Filed:
July 22, 2020
- نبذة مختصرة :
A safety belt retractor, comprising a frame (8) and a belt retracting cylinder (1), the retracting cylinder (1) being rotatably supported in the frame (8) and being composed to be used for winding a woven belt (2). The frame (8) comprises: a back plate (8h), which has a first side and a second side which are opposite to each other, and a first opening (20); a plurality of first supporting legs (8a,8b), extending from the first side of the back plate (8h); a first support plate (11), which is provided with a second opening (21) and is connected to free end regions of the first supporting legs (8a, 8b); a plurality of second supporting legs (8c, 8d, 8e, 8f), extending from the second side of the back plate (8h); and a second supporting plate (9), connected to the free end regions of the second supporting legs (8c, 8d, 8e, 8f). The first opening (20) and the second opening (21) receive the belt retracting cylinder (1). The safety belt retractor is simple in structure and easy to assembly. Also provided is a safety belt device comprising the safety belt retractor.
- Inventors:
Yanfeng Automotive Safety Systems Co., Ltd. (Shanghai, CN)
- Assignees:
Yanfeng Automotive Safety Systems Co., Ltd. (Shanghai, CN)
- Claim:
1. A safety belt retractor comprising a frame and a belt reel, wherein the belt reel is rotatably supported in the frame and is configured for winding a webbing, wherein the frame comprises: a back plate having a first side and a second side opposite to each other and having a first opening; first support legs extending from the first side of the back plate and integrally formed with the back plate; a first support plate, as a first component separate from the back plate, having a second opening and connected to free end regions of the first support legs; second support legs extending from the second side of the back plate and integrally formed with the back plate; and a second support plate, as a second component separate from the back plate, connected to free end regions of the second support legs; wherein the first opening and the second opening are configured to receive the belt reel.
- Claim:
2. The safety belt retractor as recited in claim 1 , wherein the safety belt retractor comprises a locking mechanism having a movable locking claw and a locking plate, wherein the locking plate is formed by the second support plate, wherein the second support plate has a third opening with an internal tooth system, wherein the locking claw, when engaged with the internal tooth system, causes the belt reel to be locked in a webbing pull-out direction.
- Claim:
3. The safety belt retractor as recited in claim 2 , wherein the safety belt retractor comprises a sensing unit configured to cooperate with the locking mechanism, wherein the sensing unit is arranged at a side of the second support plate facing away from the back plate.
- Claim:
4. The safety belt retractor as recited in claim 2 , wherein the safety belt retractor comprises a stop wheel, which is rotation-fixedly connected with the belt reel at an axial end of the belt reel facing the back plate and carries the movable locking claw of the locking mechanism, wherein the locking claw, when engaged with the internal tooth system, causes the stop wheel to be locked in the webbing pull-out direction.
- Claim:
5. The safety belt retractor as recited in claim 4 , wherein the safety belt retractor comprises a pretension device having a driving element and a driven element, wherein the driven element is rotation-fixedly arranged on the stop wheel and between the back plate and the second support plate, wherein the pretension device, when activated, can drive the stop wheel in the webbing winding direction.
- Claim:
6. The safety belt retractor as recited in claim 4 , wherein the safety belt retractor comprises a load limiting device, which rotation-fixedly connects the belt reel with the stop wheel, wherein the load limiting device can transmit a torque no more than a predetermined threshold value between the belt reel and the stop wheel.
- Claim:
7. The safety belt retractor as recited in claim 6 , wherein the load limiting device is configured as a torsion bar, which is received in a chamber of the belt reel, and is plastically deformable when a predetermined torsion load is exceeded, in order to limit the torque transmittable between the belt reel and the stop wheel through the torsion bar; wherein the torsion bar has a first end adjacent to the first opening and a second end adjacent to the second opening, and is rotation-fixedly connected to the stop wheel at its first end, and is rotation-fixedly connected to the belt reel at its second end.
- Claim:
8. The safety belt retractor as recited in claim 1 , wherein the safety belt retractor comprises a pretension device having a driving element and a driven element, wherein the driven element is configured to be directly or indirectly rotation-fixed with respect to the belt reel, wherein the pretension device, when activated, can directly or indirectly drive the belt reel in the webbing winding direction.
- Claim:
9. The safety belt retractor as recited in claim 1 , wherein the first support legs each have a bent end region, wherein the bent end regions of the first support legs have at least three fixing portions for fixing the first support plate in total.
- Claim:
10. The safety belt retractor as recited in claim 9 , wherein the end regions of the first support legs are bent inward toward a belt reel axis.
- Claim:
11. The safety belt retractor as recited in claim 1 , wherein the frame has two first support legs opposite to each other; wherein the two first support legs are symmetrical with each other about a longitudinal axis of the safety belt retractor, wherein the first support legs each have two fixing portions for fixing the first support plate.
- Claim:
12. The safety belt retractor as recited in claim 1 , wherein the second support legs each have a bent end region, wherein the bent end regions of the second support legs have at least three fixing portions for fixing the second support plate in total.
- Claim:
13. The safety belt retractor as recited in claim 12 , wherein the end regions of the second support legs are each bent inward toward a belt reel axis.
- Claim:
14. The safety belt retractor as recited in claim 12 , wherein the second support plate is configured as an axial stop for the stop wheel.
- Claim:
15. The safety belt retractor as recited in claim 1 , wherein the frame has four distributed second support legs, each of which has one fixing portion for fixing the second support plate; wherein the four second support legs are spaced apart from each other at a uniform angular interval with respect to a longitudinal axis of the safety belt retractor.
- Claim:
16. The safety belt retractor as recited in claim 1 , wherein the first opening and the second opening are configured as rotation bearings for the belt reel.
- Claim:
17. The safety belt retractor as recited in claim 1 , wherein the second opening is configured as an axial stop for the belt reel.
- Claim:
18. A safety belt device having a webbing, wherein the safety belt device further comprises the safety belt retractor as recited in claim 1 , wherein the webbing is wound on the belt reel of the safety belt retractor.
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- Other References:
Extended European Search Report issued on Aug. 28, 2023 of the corresponding EP application 20853465.1 (6 pages). cited by applicant
PCT International Search Report for PCT Application No. PCT/CN2020/103372 mailed Oct. 30, 2020 (6 pages, with English translation). cited by applicant
PCT Written Opinion for PCT Application No. PCT/CN2020/103372 mailed Oct. 30, 2020 (4 pages). cited by applicant
First Office Action dated Dec. 27, 2023 for Chinese Application No. 201910737453.5 (18 pages including English Translation). cited by applicant
- Primary Examiner:
Kim, Sang K
- Attorney, Agent or Firm:
Merchant & Gould P.C.
- الرقم المعرف:
edspgr.12208766
Processing Request
No Comments.