Holding device for a motor vehicle safety means

• US 20050146146A1
• Filed: 12/10/2004
• Published: 07/07/2005
• Est. Priority Date: 12/12/2003
• Status: Active Grant

• Current Assignee: Brose Schließsysteme Gmbh & Co. Kg
• Original Assignee: Brose Schließsysteme Gmbh & Co. Kg
• Inventors: Kachouh, Checrallah
• Granted Patent: US 7,311,330 B2
• Time in Patent Office: Days
• US Class Current: 292/216
• CPC Class Codes: B60R 2021/135 automatically during an accident
• CPC Class Codes: B60R 21/13 Roll-over protection electrical circuits for triggering safety arrangements B60R21/01
• CPC Class Codes: Y10T 292/1047 Closure

Abstract

A holding device for a motor vehicle safety with a component which can be displaced out of a rest position suddenly into an action position, with a holding element. Such a motor vehicle safety means is, for example, a head support/roll bar which extends automatically in an accident. The holding device has a latch which fixes the component in the rest position and a ratchet arrangement which holds the latch in the engagement position. The ratchet arrangement has ratchet kinematics and an adjustable blocking element. By moving the latch out of the engagement position into the direction of the release position, the ratchet kinematics are moved and the blocking element blocks the movement of the ratchet kinematics which can be caused by the latch.

Claims

1. A holding device for a motor vehicle safety means with a component which can be displaced out of a rest position suddenly into an action position, comprising:

a holding element;

a latch which fixes the component in the rest position and which acts on the holding element of the component, wherein the latch is pivotable around a pivot axis and is thereby movable into an engagement position which holds the component, and into a release position which releases the holding element and thus the component;

a ratchet arrangement which holds the latch in the engagement position, wherein the ratchet arrangement is movable into a holding position which holds the latch in the engagement position, and into a release position which releases the latch, the ratchet arrangement further comprising;

ratchet kinematics, and

an adjustable blocking element,

wherein, when the ratchet arrangement is in the holding position, the blocking element prevents movement of the latch out of the engagement position into the release position, and by moving the latch out of the engagement position in the direction of the release position, the ratchet kinematics is moved and the adjustable blocking element blocks the movement of the ratchet kinematics caused by the latch.

2. The motor vehicle lock of claim 1, wherein the ratchet kinematics is a reducing gear and wherein the blocking force applied by the blocking element for blocking of the latch is reduced.

3. The holding device of claim 1, the holding device further comprising:

a motorized opening drive associated with the blocking element so that the latch is released by motor.

4. The holding device of claim 1, wherein the ratchet kinematics further comprises:

a transmission lever which is pivotable around a pivot axis, wherein by pivoting the latch out of the engagement position in the direction of the release position, the transmission lever can be moved, and wherein, when the ratchet arrangement is in the holding position, the blocking element blocks the transmission lever.

5. The holding device of claim 4, wherein the transmission lever is coupled to the latch.

6. The holding device of claim 5, further comprising:

an intermediate lever located between the transmission lever and the latch to couple the latch and transmission lever, wherein the intermediate lever is able to pivot relative to the latch and relative to the transmission lever.

7. The holding device of claim 6, wherein, when the latch is in the engagement position, the force which acts from the latch via the intermediate lever on the transmission lever causes a torque on the transmission lever with respect to its pivot axis, and wherein the blocking force of the blocking element opposes this torque.

8. The holding device of claim 2, wherein the ratchet kinematics further comprises:

a transmission lever which is pivotable around a pivot axis, wherein by pivoting the latch out of the engagement position in the direction of the release position, the transmission lever can be moved, and wherein, when the ratchet arrangement is in the holding position, the blocking element blocks the transmission lever.

9. The holding device of claim 8, wherein the transmission lever is coupled to the latch.

10. The holding device of claim 9, further comprising:

an intermediate lever located between the transmission lever and the latch to couple the latch and transmission lever, wherein the intermediate lever is able to pivot relative to the latch and relative to the transmission lever.

11. The holding device of claim 10, wherein, when the latch is in the engagement position, the force which acts from the latch via the intermediate lever on the transmission lever causes a torque on the transmission lever with respect to its pivot axis, and wherein the blocking force of the blocking element opposes this torque.

12. The holding device of claim 4, wherein the transmission lever is pretensioned and wherein the pretensioning of the transmission lever counteracts the blocking force of the blocking element.

13. The holding device of claim 4, wherein the transmission lever has a catch and wherein the blocking element is movable into blocking engagement with the transmission lever via the catch.

14. The holding device of claim 12, wherein the transmission lever has a catch and wherein the blocking element can be moved into blocking engagement with the transmission lever via the catch.

15. The holding device of claim 4, wherein the blocking element is pivotable around a pivot axis, and when the ratchet arrangement is in the holding position, the blocking element is in blocking engagement with the transmission lever.

16. The holding device of claim 6, wherein the coupling of the intermediate lever to the latch has a free-wheel and movement of the latch out of the engagement position into the overtravel position is possible without movement of the transmission lever.

17. The holding device of claim 16, wherein the intermediate lever is pretensioned against the latch such that the latch is movable into the overtravel position against the pretensioning.

18. The holding device of claim 3, wherein the opening drive is one of an electric motor, electromagnet and a pneumatic drive.

19. The holding device of claim 6, wherein the coupling of the intermediate lever to the transmission lever is located off-center relative to the pivot axis of the transmission lever and wherein the coupling of the intermediate lever to the latch is located off-center relative to the pivot axis of the latch.

20. The holding device of claim 10, wherein the coupling of the intermediate lever to the transmission lever is located off-center relative to the pivot axis of the transmission lever and wherein the coupling of the intermediate lever to the latch is located off-center relative to the pivot axis of the latch.