CN-115667648-B - Motor vehicle door lock, in particular motor vehicle door lock

Abstract

The invention relates to a motor vehicle lock, in particular a motor vehicle door lock, comprising a locking mechanism, which essentially comprises a rotary fork and a locking pawl, a control lever system (1, 4) for the locking mechanism, a locking element (6), at least one locking element (8), and only one spring element (13) which interacts with both the locking element (6) and the locking element (8). The control lever system (1, 4) can be controlled by a locking element (6) to enter at least an "unlocked" functional state and a "locked" functional state and additionally can be controlled by a locking element (8) to enter an "unlocked" functional state and a "locked" functional state. According to the invention, the spring element (13) additionally interacts with the control lever system (1, 4).

Inventors

• M. Dragon
• A. groca
• D. Groca
• A. Grossman

Assignees

• 开开特股份公司

Dates

Publication Date

20260512

Application Date

20210322

Priority Date

20200416

Claims (10)

1. 1. A motor vehicle lock having a locking mechanism which essentially comprises a rotary locking fork and a locking pawl, a lever system for the locking mechanism, a locking element (6), at least one locking element (8), only one spring element (13) which interacts with both the locking element (6) and the locking element (8), wherein the lever system can be controlled by the locking element (6) at least into an "unlocked" functional state and a "locked" functional state and additionally can be controlled by the locking element (8) into the "unlocked" functional state and the "locked" functional state, characterized in that the spring element (13) additionally interacts with the lever system, wherein the spring element (13) comprises a lever spring leg (13 b) and an element spring leg (13 c), the spring element (13) bearing with its lever spring leg (13 b) against a stop (14) of a lever (1) of the lever system, and with its element spring leg (13 c) bearing against both the locking element (6) against the locking element (8).
2. 2. Motor vehicle lock according to claim 1, characterized in that a spring element (13) is connected to the lever (1).
3. 3. Motor vehicle lock according to claim 1 or 2, characterized in that the spring element (13) is designed as a helical torsion spring which is connected with its leg base (13 a) to the operating lever (1).
4. 4. A motor vehicle lock according to claim 3, characterized in that the leg base (13 a) encloses the support section of the lever (1).
5. 5. Motor vehicle lock according to claim 1, characterized in that the element-spring leg (13 c) is used for the respective positional fixation of the respective locking element (6) and the locking element (8).
6. 6. Motor vehicle lock according to claim 5, characterized in that the element-spring leg (13 c) is equipped with two projections which interact with associated cams on the associated locking element (6) and locking element (8), respectively, for position fixing.
7. 7. Motor vehicle lock according to claim 6, characterized in that the respective functional states of the locking element (6) and the blocking element (8) correspond to the position of the cam with respect to the associated projection, respectively.
8. 8. Motor vehicle lock according to any of claims 1 to 2 and 4-7, characterized in that the respective locking element (6) and locking element (8) are equipped with toothed sections (8 a) and/or actuation arms (6 a) for the respective actuation.
9. 9. Motor vehicle lock according to claim 8, characterized in that the actuation arm (6 a) is used for a corresponding rotational actuation.
10. 10. A motor vehicle lock according to any one of claims 1-2 and 4-7, characterized in that the motor vehicle lock is a motor vehicle door lock.

Description

Motor vehicle door lock, in particular motor vehicle door lock Technical Field The invention relates to a motor vehicle lock, in particular a motor vehicle door lock, comprising a locking mechanism, which essentially comprises a rotary fork and a locking pawl, a control lever system for the locking mechanism, a locking element, at least one locking element, only one spring element which interacts with both the locking element and the locking element, wherein the control lever system can be controlled by the locking element at least into an "unlocked" functional state and a "locked" functional state and additionally can be controlled by the locking element into an "unlocked" functional state and a "locked" functional state. Background In motor vehicle locks and in particular in motor vehicle door locks, it is generally important that the respective functional states are reliably and reproducibly occupied. This must be ensured not only over the entire life cycle of the motor vehicle lock, but also in particular at high temperatures as well as at low temperatures. In addition, efforts are generally made to reduce the structural effort and thus the costs as little as possible. In the context of the present invention, the term "motor vehicle lock" includes not only motor vehicle door locks, but in particular motor vehicle side door locks. And also motor vehicle locks for front hoods, rear hatches, sliding doors, fuel tank caps, charging covers, etc. The locking element may in principle be a central locking element. By means of the central locking element, the lever system can be switched into an "unlocked" functional state and into a "locked" functional state. The functional state "unlock" generally corresponds to the locking mechanism being openable by means of a lever system. In contrast, the functional state "lock" is the case in which the locking mechanism cannot normally be opened by means of a lever system from the outside, but is still allowed to be opened from the inside. The additionally provided locking element may generally be a child resistant locking element or a tamper resistant locking element or both. In the case of child-resistant locking elements, which are typically implemented only on the motor vehicle rear side door, the functional state "unlocked" belongs to the case in which the relevant motor vehicle (rear) side door can be opened from the inside, even when, for example, the locking element is in the state "locked". Conversely, a state "lock-up" corresponds to the inability to open the associated motor vehicle door from the inside. If the blocking element is an anti-theft blocking element, the functional state "blocked" corresponds to the fact that the associated motor vehicle door can be opened generally not only from the inside but also from the outside. Accordingly, the functional state "lock-up" is a state in which the motor vehicle door cannot be opened from the inside as well as from the outside, so that the motor vehicle lock concerned cannot be opened even when, for example, the glass of the motor vehicle door is broken. Both the locking element and the locking element can be engaged mechanically or in a drive-technical manner and also manually or by hand. As child-resistant locking elements, for example nut-shaped child-resistant locking elements are known, by means of which different functional states can be manually adjusted. In contrast, the switching of the functional state of the locking element or the central locking element is usually carried out in a motorized manner or in a drive-technical manner. The various described functional states may not be or cannot be reliably regulated or maintained due to temperature-induced effects and/or due to prolonged use. For this reason, in practice, a respective element is usually assigned a flip spring, by means of which two common functional states are usually bistable adjusted or maintained. This embodiment is structurally expensive, since each element is assigned its own flip spring. For this reason, the following solutions are already known in the art to allow the spring to assume a plurality of functions. For example, DE 10 2017 124 530 A1 of the applicant describes a motor vehicle door lock which is equipped with a first and a second locking claw. The first locking claw is spring-loaded with the lever connected in between. For this purpose, the spring has two spring legs which originate from the leg base, one of which rests against the associated actuating lever and the other of which rests against the other second locking claw. The foregoing teachings have no significant impact on the existing problem of reliably occupying and maintaining the functional state of the locking element and the deadlocking element due to the specific design. In a further prior art according to DE 101 57 473 A1, a drive unit for a door lock is described, in which an engagement element in the form of a spring is provided on a gear or cam. Here, the en