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DE-212024000407-U1 - Motor vehicle lock

DE212024000407U1DE 212024000407 U1DE212024000407 U1DE 212024000407U1DE-212024000407-U1

Abstract

Motor vehicle lock, especially for a body hood, comprising • an electric motor (11) with an output shaft (12) which is connected via a gearbox to an actuating wheel (15) which is rotatably mounted about a bearing bolt (16), • a trap assembly (31) with a lever-shaped trap (32) which is pivotably mounted on a trap bolt (321), and • a ratchet (21, 21a) which is pivotable about a ratchet bolt (22) between an open and a closed position and is provided with a positive locking catch recess (25) for catching a catch eye (61) of the vehicle body, characterized in that • a sleeve (41, 411) is rotatably mounted on the bearing bolt (16) of the actuating wheel (15), • a connecting rod (51, 511) is arranged between the sleeve (41, 411) and the ratchet (21), or a lever connection mechanism (50) of connecting rods (51a, 51b) is arranged between the sleeve (41, 411) and the ratchet (21), which connects the actuating wheel (15) and the ratchet (21) when rotating in planes (δ, γ) inclined to each other, and • an actuating wheel (15) which can be rotated in both directions by the force of the electric motor (11) is provided with an axial drive bolt (18) which can be engaged with a sleeve (41, 411) or a radial arm (42) formed on the sleeve (41, 411).

Assignees

  • BRANO AS

Dates

Publication Date
20260513
Application Date
20240911
Priority Date
20230918

Claims (13)

  1. Motor vehicle lock, in particular for a body hood, comprising: • an electric motor (11) with an output shaft (12) connected via a gearbox to an actuating wheel (15) rotatably mounted about a bearing pin (16), • a latch assembly (31) with a lever-shaped latch (32) pivotably mounted on a latch pin (321), and • a ratchet (21, 21a) pivotable about a ratchet pin (22) between an open and a closed position and provided with a positive-locking catch recess (25) for engaging a catch eye (61) of the vehicle body, characterized in that : • a sleeve (41, 411) is rotatably mounted on the bearing pin (16) of the actuating wheel (15), • a connecting rod (51, 511) is arranged between the sleeve (41, 411) and the ratchet (21), or a lever connection mechanism (50) of connecting rods (51a, 51b) is arranged between the sleeve (41, 411) and the ratchet (21), which connects the actuating wheel (15) and the ratchet (21) when rotating in planes (δ, γ) inclined to each other, and • an actuating wheel (15) rotatable in both directions of rotation by the force of the electric motor (11) is provided with an axial drive pin (18) which can be engaged with a sleeve (41, 411) or a radial arm (42) formed on the sleeve (41, 411).
  2. Motor vehicle lock according to Claim 1 , characterized in that the first end of the connecting rod (51, 511) engages with the sleeve (41, 411) or is rotatably mounted on the sleeve (41, 411) at a radial distance from the axis (α) of the bearing bolt (16) of the sleeve (41, 411) and the second end of the connecting rod (51, 511) engages with the ratchet (21) or is rotatably mounted on the ratchet (21a) at a radial distance from the axis (β) of the ratchet bolt (22).
  3. Motor vehicle lock according to Claim 2 , characterized in that the first end of the connecting rod (51) is rotatably mounted on the connecting bolt (43) of the radial arm (42) of the sleeve (41), and the second end of the connecting rod (51) is rotatably mounted on the connecting bolt (24) of the radial arm (23) of the ratchet (21).
  4. The vehicle lock according to one of the Claims 1 until 3 , characterized in that the actuating wheel (15) is provided with an axial control bolt (17) which can be engaged with an engagement projection (333) of the trap assembly (31) which engages in the path of the axial control bolt (17) of the actuating wheel (15).
  5. Motor vehicle lock according to one of the Claims 1 until 4 , characterized in that the first end of the connecting rod (511b) engages with the sleeve (411) by means of a gear drive consisting of a circumferential toothing on the circumference of the sleeve (411) and a straight toothing on the toothed connecting rod (511b).
  6. Motor vehicle lock according to one of the Claims 1 until 5 , characterized in that the second end of the connecting rod (511c) engages with the ratchet (21a) by means of a gear drive which consists of a circumferential toothing on the circumference of the ratchet (21a) and a straight toothing on the toothed connecting rod (511c).
  7. Motor vehicle lock according to one of the Claims 1 until 6 , characterized in that the ratchet (21) in the semi-closed position is blocked by the stop of the first circumferential lock (26) on the locking projection (323) of the trap (32) and can be brought into a closed position by a connecting rod (51), in which it is blocked by the stop of the second circumferential lock (27) on the locking projection (323) of the trap (32).
  8. Motor vehicle lock according to Claim 3 , characterized in that the connecting line which is guided by the connecting bolt (24) of the radial arm (23) of the ratchet (21) and the connecting bolt (43) of the radial arm (42) of the sleeve (41) is directed to the bearing bolt (16) of the actuating wheel (15) in the closed position of the ratchet (21).
  9. Motor vehicle lock according to Claim 3 , characterized in that the connecting line which is guided by the connecting bolt (24) of the radial arm (23) of the ratchet (21) and the connecting bolt (43) of the radial arm (42) of the sleeve (41) is in the open position of the ratchet (21) to the ratchet bolt (22) of the ratchet (21).
  10. Motor vehicle lock according to Claim 1 , characterized in that it comprises a control lever (33) which is pivotably mounted about the axis δ, which is coaxial or parallel to the axis γ of the mounting of the latch bolt (321), wherein on the control lever (33) arranged are: - an engagement projection (333) for engagement with an axial control bolt (17) of the actuating wheel (15) and - a driver projection (334) for engagement with an engagement surface (324) arranged on the latch (32) and a latch (32) with a locking projection (323) is provided for intervention with a circumferential lock (26, 27) formed on the ratchet (21).
  11. Motor vehicle lock according to Claim 1 , characterized in that a lever connection mechanism (50) is arranged between the sleeve (41) and the ratchet (21) rotatable in the plane (δ) and inclined to the plane (γ) of the rotation of the actuating wheel (15), the lever connection mechanism comprising a connecting rod (51a) of the sleeve (41) rotatably mounted at its first end on the radial arm (42) of the sleeve (41), and a connecting rod (51b) of the ratchet (21) rotatably mounted at its first end on the radial arm (23) of the ratchet (21), wherein the second ends of the connecting rods (51a, 51b) are connected to each other for mutual movement in at least two degrees of freedom.
  12. Motor vehicle lock according to Claim 1 , characterized in that the second ends of the connecting rods (51a, 51b) are rotatably mounted on mutually inclined bolts (75, 77) of the slider (71), which is slidably mounted in the guide (70).
  13. Motor vehicle lock according to Claim 1 or 2 , characterized in that the plane (δ) of the rotation of the ratchet (21) is inclined relative to the plane (γ) of the rotation of the actuating wheel (15) by an angle of inclination of 1° - 90°.

Description

Technical subject area The invention relates to a motor vehicle lock, in particular for a body hood or door, comprising an electric motor with an output shaft which is connected via a gearbox to an actuating wheel which is rotatably mounted about a bearing bolt, a latch assembly with a lever-shaped latch which is pivotably mounted on a latch bolt, and a ratchet which is pivotable about a ratchet bolt between an open and a closed position and is provided with a positive-locking catch recess for catching a catch eye of the vehicle body. State of the art When the side doors or trunk lid of a vehicle are closed, the reaction of the rubber seal or the closing resistance immediately before the doors are fully closed often requires considerable force to close completely. With side doors and trunk lids of motor vehicles that require force to close, it can happen that the doors or lid cannot be fully closed and secured. Often, the doors remain ajar and are only partially or incompletely secured, and the sensor system detects that the doors or lid are only partially secured. Subsequently, the doors or lid must be laboriously opened and closed again. Therefore, devices were sought that could easily and reliably bring doors and lids into a fully locked position. To achieve this goal, numerous locking devices for closing the side doors or trunk lid into a fully locked state were implemented when the system detected that the doors were only partially secured. Such locking devices typically have two functions: the unlocking function for opening the doors and the function for forcing the ratchet from the partially locked to the fully locked position. According to the previous state of the art, these functions were controlled separately by two control units, which increased the size of the device and manufacturing costs. Another problem was that their use in vehicle doors was difficult due to space constraints, and in vehicle hoods, it reduced trunk capacity. The goal, therefore, was a locking and unlocking device for a single door element that could perform the locking process from a partially locked to a fully locked position and the unlocking process of the door with a single control element that was smaller in size, thus taking up less space and simultaneously being lighter. From the document DE19736445 A motor vehicle lock is known comprising an electric motor with a gearbox for driving an actuating wheel, which is connected via a pull rod to a control cam of the lock. The control cam is pivotably mounted on a support shaft, on which a ratchet is also pivotably mounted. The control ratchet is generally L-shaped with two arms and can be pivoted to the left or right from the neutral position. The ratchet can be moved into a partially locked or a fully locked position. Stop recesses are formed on the circumference of the ratchet, into which the projections of two latches engage successively. These latches are pivotably mounted outside the ratchet. The first latch is pivotably mounted at the free end of an arm of the control cam, and the second latch is pivotally mounted on a bolt connected to the lock housing. The ratchet is provided with a positive-locking recess on its circumference to catch and lock the catch eye, which is fixedly connected to the vehicle body. When the catch eye engages in the positive-locking recess of the ratchet, the ratchet rotates counterclockwise against the preload of the coil spring into a partially locked position, and the first latch engages in the first engagement notch on the ratchet's circumference. In the partially locked position, turning the operating wheel counterclockwise moves the control cam back one cycle. This rotation is the first phase of the process in which the second latch is moved from the half-engaged position into the second latch groove, and the ratchet is moved from the partially locked position to the fully locked position. In the fully locked position, the second latch engages with the ratchet's circumference. When the ratchet is in the fully locked position and the operating wheel is turned counterclockwise, the control cam rotates one cycle from its neutral position to its home position. This phase of the control cam's rotation constitutes the second rotation phase. In this second rotation phase, the control cam's arm rests on a pin designed as a protruding means for releasing the first latch, thus pushing the first latch away from the ratchet against the preload. The pin is positioned so that it engages the second latch when the control cam rotates to the position where it pushes the first latch away. By pushing away the first latch, The ratchet, locked in the semi- or fully locked position, is released from its engagement. When the ratchet's engagement with the first latch is released by rotating the control cam, the second latch is also moved away from the ratchet's outer edge. The second latch is pushed out of engagement with the ratchet's latch recess, and the