Central control structure of motor vehicle door lock

Abstract

The invention relates to a central control structure of a motor vehicle door lock, the working principle of the central control structure is as follows: when a pull rod is positioned at a position I, a transition rod and a convex part are matched, an external opening rod moves from a position III to a position IV to push the opening rod to move together, and the external opening rod pushes a pawl to move to release the limitation on a spring bolt, so that the unlocking action of the door lock is realized; the first position is usually called as an insurance releasing position; when the pull rod is located at the second position, the transition rod and the protrusion are not matched, the external opening rod moves from the third position to the fourth position, the opening rod cannot be pushed to move together, the external opening rod cannot push the pawl to move, the pawl keeps limitation of the spring bolt, unlocking cannot be achieved, and the second position is usually called as an upper safety position. And in an unlocking state, the external opening rod groove rotates to drive the second limiting column and the convex part to rotate, so that unlocking is realized. The external opening mechanical release and central control safety functions can be reserved at the same time, the safety can be improved, and downward compatibility with conventional central control door lock control logic can be kept.

Description

Technical Field

[0001] The present invention relates to the field of motor vehicle door locks, and in particular to a central control structure of a motor vehicle door lock. Background Art

[0002] With the development of automotive market applications and demands, the requirements for automation, electrification, and independence of vehicle opening and closing systems are gradually increasing. The automation, electrification, and modularization of side door locks are also gradually increasing. Therefore, it is necessary to provide a central control structure for motor vehicle door locks that can simultaneously retain the functions of external mechanical release and central control safety. For some doors equipped with electric opening functions, this not only improves safety but also maintains backward compatibility with the control logic of conventional central control door locks. Summary of the Invention

[0003] The purpose of the present invention is to provide a central control structure for a motor vehicle door lock, which can simultaneously retain the outward opening mechanical release and central control safety functions. For some vehicle doors equipped with electric opening functions, it can not only improve safety but also maintain backward compatibility with the control logic of conventional central control door locks.

[0004] In order to solve the problems existing in the prior art, the present invention provides a central control structure of a motor vehicle door lock, comprising:

[0005] A pull rod having a first end and a second end facing opposite directions, wherein the first end is provided with a groove, and a boss located in the groove drives the pull rod to slide along its length, and the second end is provided with a pull rod sliding groove;

[0006] A transition rod is provided with a first limiting post and a second limiting post, wherein the first limiting post is clamped in the pull rod sliding groove, and the pull rod sliding groove drives the first limiting post to move, thereby driving the second limiting post to move to realize the safety or release of the safety;

[0007] an external opening lever, one end of which is disposed on the housing and rotates along a second axis, the other end of which is provided with an external opening lever hole connected to an external pull wire, a side surface of which is further provided with an external opening lever slot, and the second limiting column moves as the external opening lever slot rotates;

[0008] An opening rod is arranged on the shell and rotates along the second axis. A convex portion is provided at the position of the opening rod close to the second limiting column. When the second limiting column is flush with the convex portion, it is in the released safety state. When the second limiting column is away from the convex portion, it is in the on safety state. In the released safety state, the external opening rod slot rotates to drive the second limiting column and the convex portion to rotate, thereby achieving unlocking.

[0009] Optionally, the central control structure of the motor vehicle door lock further includes a transition rod torsion spring, one end of which is limited to the first limiting column to apply force to the first limiting column in the direction of releasing the safety.

[0010] Optionally, in the central control structure of the motor vehicle door lock, when the safety is released, the opening rod, the external opening rod and the transition rod rotate coaxially and are located on the second axis.

[0011] Optionally, the central control structure of the motor vehicle door lock further includes a worm torsion spring, one end of the worm torsion spring is fixed to the worm wheel, and the other end is fixed to the housing.

[0012] Optionally, in the central control structure of the motor vehicle door lock, the external opening rod hole is connected to an external device through the external pull wire.

[0013] Optionally, the central control structure of the motor vehicle door lock further includes:

[0014] a motor, wherein the motor is arranged on the housing;

[0015] a worm, the worm being fixedly connected to the rotor of the motor;

[0016] A worm wheel is provided on the housing and rotates along the first axis. The turbine is driven by the worm. The worm wheel is provided with the protruding column.

[0017] In the central control structure of the motor vehicle door lock provided by the present invention, this mechanism is equipped with an independent motor and transmission mechanism, and is matched with the vehicle control logic. It can retain the external opening mechanical release and central control insurance functions at the same time, which not only improves safety, but also maintains backward compatibility with the conventional central control door lock control logic. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the release safety of the overall structure of a motor vehicle door lock mechanism provided by an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of unlocking the overall structure of a motor vehicle door lock mechanism provided by an embodiment of the present invention;

[0020] Figure 3-6 A diagram showing the working state of a motor vehicle door lock mechanism provided by an embodiment of the present invention;

[0021] Figure 7 A partial schematic diagram of a motor vehicle door lock mechanism provided by an embodiment of the present invention.

[0022] Among them, 11-lock tongue; 12-pawl; 18-opening rod; 18a-protrusion; 61-external opening rod; 61a-external opening rod hole; 61b-external opening rod slot; 63-transition rod; 63a-first limiting column; 63b-second limiting column; 64-transition rod torsion spring; 65-pull rod; 65a-pull rod mounting column; 65b-pull rod slide groove; 81-motor; 82-worm; 83-worm wheel; 83a-protrusion; 85-worm torsion spring; 165-external pull wire. DETAILED DESCRIPTION

[0023] The following is a more detailed description of the specific embodiments of the present invention with reference to schematic diagrams. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are only used for the purpose of conveniently and clearly illustrating the embodiments of the present invention.

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] With the development of automotive market applications and demands, the requirements for automation, electrification, and independence of vehicle opening and closing systems are gradually increasing. The automation, electrification, and modularization of side door locks are also gradually increasing. Therefore, it is necessary to provide a central control structure for motor vehicle door locks that can simultaneously retain the functions of external mechanical release and central control safety. For some doors equipped with electric opening functions, this not only improves safety but also maintains backward compatibility with the control logic of conventional central control door locks.

[0026] In order to solve the problems existing in the prior art, the present invention provides a central control structure of a motor vehicle door lock, referring to Figure 1-7 , the following structures can be installed on different shells, including:

[0027] A motor 81, wherein the motor 81 is provided on the housing;

[0028] a worm 82 , the worm 82 being fixedly connected to the rotor of the motor 81 ;

[0029] A worm wheel 83 is provided on the housing and rotates along the first axis. The turbine is driven by the worm 82. The worm wheel 83 has a protruding column 83a.

[0030] The pull rod 65 has a first end and a second end facing opposite each other. The first end is provided with a groove, and the boss 83a is located in the groove to drive the pull rod 65 to slide along its length. The second end is provided with a pull rod slot 65b;

[0031] The transition rod 63 is provided with a first limiting post 63a and a second limiting post 63b. The first limiting post 63a is engaged in the pull rod slot 65b. The pull rod slot 65b drives the first limiting post 63a to move, thereby driving the second limiting post 63b to move to engage or disengage the safety.

[0032] Preferably, the first limiting column 63 a and the second limiting column 63 b are not parallel to the transition rod 63 .

[0033] An external opening lever 61, one end of which is disposed on the housing and rotates along the second axis. The other end of the external opening lever 61 is provided with an external opening lever hole 61a connected to the external pull wire 165. The side of the external opening lever 61 is also provided with an external opening lever slot 61b. The second limiting post 63b moves as the external opening lever slot 61b rotates;

[0034] Preferably, the direction of the external opening rod slot 61b is approximately parallel to the sliding direction of the pull rod 65, and the external pull wire 165 includes a Bowden wire, wherein the first axis and the second axis are perpendicular to each other.

[0035] The opening rod 18 is provided on the housing and rotates along the second axis. The opening rod 18 is provided with a convex portion 18a near the second limiting column 63b. When the second limiting column 63b is flush with the convex portion 18a, it is in the unsafe state. When the second limiting column 63b is away from the convex portion 18a, it is in the safe state. In the unsafe state, the external opening rod groove 61b rotates to drive the second limiting column 63b and the convex portion 18a to rotate, thereby unlocking the lock (refer to FIG. 1 ). Figure 2 ).

[0036] Among them, reference Figure 3-7 The sliding range of the second limiting column 63b in the external opening rod groove 61b is between position one and position two, and the position one (i.e., the safety release position) is the position where the second limiting column 63b is flush with the protrusion 18a, and the position two (i.e., the upper safety position) is the position where the second limiting column 63b is farthest from the protrusion 18a. The rotation range of the external opening rod 61 when being pulled by an external device is between position three and position four, and the position three is the position when the external opening rod 61 is not pulled, and the position four is the position when the external opening rod 61 is being pulled.

[0037] In one embodiment, when the pull rod 65 is in position 1, the transition rod 63 and the protrusion 18a cooperate. Movement of the external opening lever 61 from position 3 to position 4 can push the opening lever 18 to move with it. The latter pushes the pawl 12 to move, releasing the restraint on the lock tongue 11, thereby unlocking the door lock. When the pull rod 65 is in position 2, the transition rod 63 and the protrusion 18a do not cooperate. Movement of the external opening lever 61 from position 3 to position 4 does not push the opening lever 18 to move with it. The latter cannot push the pawl 12 to move, and the restraint on the lock tongue 11 by the pawl 12 remains, preventing unlocking.

[0038] Optionally, the central control structure of the motor vehicle door lock further includes a transition rod torsion spring 64, one end of which is limited to the first limiting column 63a, applying force to the first limiting column 63a in the direction of releasing the safety.

[0039] Typically, a pull rod mounting post 65 a is further provided at the second end of the pull rod 65 , the transition rod torsion spring 64 is sleeved on the pull rod mounting post 65 a , and the other end of the transition rod torsion spring 64 is fixed to the pull rod 65 .

[0040] Preferably, a transition rod torsion spring 64 is provided, which is elastically connected between the pull rod 65 and the transition rod 63 to maintain the sliding coupling between the two in the sliding direction. When the pull rod 65 is in position 2 (safety), the external pull wire 165 pulls the external opening rod 61 and keeps it in position, and the Figure 6 If the motor 81 drives the pull rod 65 into position 1 (safety release), the transition rod 63 is blocked by the protrusion 18a, and the transition rod 63 cannot move further. The transition rod torsion spring 64 temporarily decouples the pull rod 65 and the transition rod 63 from sliding, and enters the state of Figure 7 The state is usually called the tension lock working state. Until the external pull wire 165 releases the external opening rod 61 to return to position three, the transition rod torsion spring 64 pushes the transition rod 63 to re-enter the sliding coupling state. Figure 3 status.

[0041] Optionally, in the central control structure of the motor vehicle door lock, when the safety is released, the opening rod 18, the external opening rod 61 and the transition rod 63 rotate coaxially and are located on the second axis.

[0042] Optionally, the central control structure of the motor vehicle door lock further includes a worm torsion spring 85 , one end of the worm torsion spring 85 is fixed to the worm wheel 83 , and the other end is fixed to the housing.

[0043] Specifically, by setting a suitable eccentric angle, the worm gear 83 can be stably positioned at one of the two extreme angles, thereby providing a sense of gear position.

[0044] Optionally, in the central control structure of the motor vehicle door lock, the external opening rod hole 61a is connected to an external device through the external pull wire 165.

[0045] Wherein, the external device includes an external operating handle of the vehicle.

[0046] In summary, in the central control structure of the motor vehicle door lock provided by the present invention, this mechanism is equipped with an independent motor and transmission mechanism, and is matched with the vehicle control logic. It can retain the external opening mechanical release and central control insurance functions at the same time, which not only improves safety, but also maintains backward compatibility with the conventional central control door lock control logic.

[0047] The above description is merely a preferred embodiment of the present invention and does not limit the present invention in any way. Any person skilled in the art who, without departing from the scope of the present invention, makes any equivalent substitution, modification, or other changes to the technical solution and technical content disclosed in the present invention shall be deemed to be within the scope of the present invention and still fall within the scope of protection of the present invention.

Claims

1. A central control structure for a motor vehicle door lock, characterized in that: include: A pull rod having a first end and a second end facing opposite directions, wherein the first end is provided with a groove, and a boss located in the groove drives the pull rod to slide along its length, and the second end is provided with a pull rod sliding groove; A transition rod is provided with a first limiting post and a second limiting post, wherein the first limiting post is clamped in the pull rod sliding groove, and the pull rod sliding groove drives the first limiting post to move, thereby driving the second limiting post to move to realize the safety or release of the safety; an external opening lever, one end of which is disposed on the housing and rotates along a second axis, the other end of which is provided with an external opening lever hole connected to an external pull wire, a side surface of which is further provided with an external opening lever slot, and the second limiting column moves as the external opening lever slot rotates; An opening rod is arranged on the shell and rotates along the second axis. A convex portion is provided at the position of the opening rod close to the second limiting column. When the second limiting column is flush with the convex portion, it is in the released safety state. When the second limiting column is away from the convex portion, it is in the on safety state. In the released safety state, the external opening rod slot rotates to drive the second limiting column and the convex portion to rotate, thereby achieving unlocking.

2. The central control structure of a motor vehicle door lock according to claim 1, characterized in that: It also includes a transition rod torsion spring, one end of which is limited to the first limiting column to apply force to the first limiting column in the direction of releasing the safety.

3. The central control structure of a motor vehicle door lock according to claim 1, characterized in that: When the safety is released, the opening rod, the external opening rod and the transition rod rotate coaxially and are located on the second axis.

4. The central control structure of a motor vehicle door lock according to claim 1, characterized in that: It also includes a worm torsion spring, one end of which is fixed on the worm wheel, and the other end is fixed on the housing.

5. The central control structure of a motor vehicle door lock according to claim 1, characterized in that: The external opening rod hole is connected to an external device through the external pull wire.

6. The central control structure of a motor vehicle door lock according to claim 1, characterized in that: Also includes: a motor, wherein the motor is arranged on the housing; a worm, the worm being fixedly connected to the rotor of the motor; A worm wheel is provided on the housing and rotates along the first axis. The turbine is driven by the worm. The worm wheel is provided with the protruding column.

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