Car door lock

Abstract

The invention provides a vehicle door lock which comprises a lock fork suitable for being connected with a firing pin to achieve locking of the vehicle door lock, and a self-suction rod capable of being matched with the lock fork to enable the vehicle door lock to enter a second state from a first state to achieve self-suction. The ice breaking rod can be jointed with the firing pin, so that the automobile door lock enters a fourth state from a third state to realize ice breaking; and the driving device is connected with the self-suction rod and the ice breaking rod, and the driving device can rotate in the first direction or the second direction so as to drive the self-suction rod to achieve self-suction or drive the ice breaking rod to achieve ice breaking. The ice breaking and self-absorption functions are achieved only through one driving device, the number of parts of the whole car door lock is small, and the complexity and manufacturing cost of the car door lock are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, and in particular to a door lock for a vehicle. Background Art

[0002] Cars have multiple side doors for people to get on and off. Traditional car side doors are opened and closed manually. As cars become more intelligent, door locks have begun to have more functions. For example, door locks can be released automatically without manual unlocking. When the door is closed to the half-locked position, the door lock can automatically close to complete the door closing.

[0003] For such a door lock with automatic release and automatic closing functions, in winter or when the temperature is low, if the car door is frozen, the door lock will encounter resistance during the automatic release process and cannot be released automatically. In order to solve this problem, the car door lock needs to be equipped with an ice-breaking device. Therefore, the car door lock needs to realize the three functions of power release, ice-breaking and self-priming, which makes the structure of the car door lock more and more complicated. For example, Chinese patent application 202211059310.1 discloses an electric-opening automobile side door lock with a self-priming function, including a lock body and a shell, an electric self-opening mechanism is provided on the shell, and a self-priming mechanism and an ice-breaking mechanism are provided on the lock body; a self-opening motor is provided on one side of the self-opening gear, and the self-opening gear is meshed with the self-opening worm on the self-opening motor; the arc protrusion on the self-opening gear abuts against the contact surface A on the self-opening rocker arm; the self-priming safety rocker arm is riveted to the external opening linkage arm through the self-priming safety rocker arm shaft; the external opening linkage arm is provided with a toggle arm and a toggle arm return spring; the self-priming rocker arm is provided with a self-priming linkage arm, and the self-priming linkage arm and the self-priming rocker arm are riveted through the self-priming linkage arm shaft. This solution can realize the self-priming and ice-breaking functions at the same time, but it requires the use of two cables, which also requires two actuators, which results in a large number of parts, a complex structure, and increased costs. Summary of the invention

[0004] Taking into account the requirements for vehicle intelligence and the self-priming, ice-breaking and power release functions of the vehicle's door locks, the purpose of the present invention is to propose a new door lock structure that is different from the known one to achieve the power release, ice-breaking and self-priming functions of the door locks.

[0005] To achieve the above object, the present invention provides a vehicle door lock, comprising:

[0006] A lock fork, wherein the lock fork is adapted to engage with the striker to achieve locking of the door lock,

[0007] A self-priming rod, which can cooperate with the lock fork to enable the door lock to enter the second state from the first state to achieve self-priming;

[0008] an ice-breaking rod, the ice-breaking rod being engageable with the striker so that the door lock enters the fourth state from the third state to achieve ice breaking;

[0009] A driving device is connected to the self-priming rod and the ice-breaking rod, and the driving device can rotate along a first direction or a second direction to drive the self-priming rod to achieve self-priming or drive the ice-breaking rod to achieve ice breaking.

[0010] According to one aspect of the present invention, a pawl is further included, and the pawl can be engaged with the first pawl engaging portion or the second pawl engaging portion of the locking fork.

[0011] According to one aspect of the present invention, the vehicle door lock further comprises a fixing component, and the rotation axes of the driving device, the locking fork and the pawl are arranged on the fixing component.

[0012] According to one aspect of the present invention, one end of the self-priming rod is connected to the driving device via a rotating shaft, and the other end can engage with the self-priming rod engaging portion of the locking fork, so that when the driving device rotates along a first direction, the self-priming rod can push the locking fork to rotate.

[0013] According to one aspect of the present invention, the ice-breaking rod includes a first ice-breaking rod, a second ice-breaking rod and a third ice-breaking rod, one end of the first ice-breaking rod is connected to the driving device via a rotating shaft, and the other end is hinged to one end of the second ice-breaking rod, the other end of the second ice-breaking rod is hinged to one end of the third ice-breaking rod, and the second ice-breaking rod is connected to a fixed component at a portion between the two ends via a rotating shaft.

[0014] According to one aspect of the present invention, when viewed in a direction parallel to the rotation axis of the driving device, a line connecting the rotation axis of the first ice-breaking rod and the rotation axis of the self-priming rod passes through the rotation axis of the driving device, and the rotation axis of the first ice-breaking rod and the rotation axis of the self-priming rod are located on both sides of the rotation axis of the driving device.

[0015] According to one aspect of the present invention, the other end of the third ice-breaking rod can engage with the striker, and when the driving device rotates in the second direction, the third ice-breaking rod can abut against the striker to achieve ice breaking.

[0016] According to one aspect of the present invention, a movement limiting portion is provided on the locking fork, and the contour of the third ice-breaking rod has a first contour and a second contour matching the movement limiting portion.

[0017] According to one aspect of the present invention, the first contour is in the form of a concave curved portion, and the second contour is a straight line portion connected to one end of the first contour.

[0018] According to one aspect of the present invention, the movement limiting portion adopts a cylindrical structure.

[0019] As can be seen from the above, the present invention proposes a new door lock, which realizes the ice-breaking and self-priming functions by only using one driving device, and the number of parts of the entire door lock is relatively small, thereby reducing the complexity and manufacturing cost of the door lock.

[0020] Other features and advantages of the present invention will be described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The features and advantages of the present invention will be clearly understood through the detailed description provided below with reference to the accompanying drawings. It should be understood that the following drawings are only schematic and not necessarily drawn to scale, and thus cannot be regarded as limiting the present invention, wherein:

[0022] Figure 1 A plan view showing the vehicle door lock of the present invention in a first state.

[0023] Figure 2 A plan view showing the vehicle door lock of the present invention in a second state.

[0024] Figure 3 A plan view showing the vehicle door lock of the present invention in a third state.

[0025] Figure 4 A plan view showing the vehicle door lock of the present invention in a fourth state. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, many specific details are set forth so that those skilled in the art can more fully understand and implement the present invention. However, it will be apparent to those skilled in the art that the present invention may be implemented without some of these specific details. In addition, it should be understood that the present invention is not limited to the specific embodiments described. On the contrary, any combination of the features and elements described below may be considered to implement the present invention, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments and advantages are intended for illustration only and should not be considered as elements or limitations of the claims unless explicitly stated in the claims.

[0027] In the following, terms such as "first", "second", etc. are used to describe the elements of the present application. These terms are only used to distinguish the various elements, and are not used to limit the nature, order or number of these elements. The terms "including" and "having" are used to express an open-ended inclusive meaning, and mean that there may be additional elements / components in addition to the listed elements / components.

[0028] Figure 1 FIG. 1 shows a plan view of a vehicle door lock according to the present invention in a first state. The vehicle door lock according to the present invention comprises a drive device 1. The drive device 1 is Figure 1 Specifically implemented as a circular wheel that can rotate around a fixed axis A. The wheel can be driven by a power source such as a motor to rotate around axis A. A self-priming rod 2 and a first ice-breaking rod 3 are provided on the driving device 1. Specifically, one end of the self-priming rod 2 is rotatably provided on the driving device 1 around axis B through axis B, and one end of the first ice-breaking rod 3 is rotatably provided on the driving device 1 around axis C through axis C. Therefore, when the driving device 1 rotates around axis A, the self-priming rod 2 thereon can be driven to rotate around axis B and the first ice-breaking rod 3 can be driven to rotate around axis C.

[0029] In this document, capital letters are used to indicate a rotation axis that is fixed relative to the mounting component, although the component on which the rotation axis is mounted can move. For example, axis A is mounted on a component such as a base plate, and axis A is fixed relative to the base plate. Axles B and C are mounted on a drive device 1. Although the drive device 1 can rotate, axes B and C are fixed relative to the drive device 1. Lowercase letters are used to indicate a rotation axis that moves itself, such as axis a and axis b described below. For the sake of clarity and simplicity, only the lowercase letters are used. Figure 1 The various axes of rotation are shown in , and are located directly inside the outline of the axis they indicate.

[0030] The other end of the self-priming rod 2 can abut against the self-priming rod joint of the locking fork 6, thereby preventing the locking fork 6. Since the driving device 1 can rotate in two directions to achieve the self-priming or ice-breaking function, in order to prevent the self-priming rod from interfering with other components during the ice-breaking process, such as Figures 1 to 4 As shown, the shapes of the lock fork and the self-priming rod are arranged so that during the entire working process of the door lock, when the driving device 1 rotates counterclockwise for self-priming, the other end of the self-priming rod 2 can engage with the self-priming rod engaging portion of the lock fork 6, and when the driving device 1 rotates clockwise to achieve ice breaking, the other end of the self-priming rod will not hinder the movement of the lock fork.

[0031] As another alternative embodiment, a raised portion may be provided in the middle portion of the self-priming rod 2, so that when the driving device 1 rotates and drives the self-priming rod 2 to move, the self-priming rod 2, for example, contacts the limiting device in different positions in sequence under the action of gravity. During the movement of the self-priming rod 2, when the raised portion contacts the limiting device, the self-priming rod 2 is lifted, so that the other end thereof does not affect the rotation of the locking fork 6; and when the portion other than the raised portion contacts the limiting device, the other end of the self-priming rod 2 can be in a lower position, so that it can be engaged with the self-priming rod engaging portion of the locking fork 6. The limiting device may be in the form of a limiting column.

[0032] from Figure 1As can be seen in the figure, one end of the first ice-breaking rod 3 is rotatably connected to the driving device 1 through the axis C, and the other end is pivotally connected to one end of the second ice-breaking rod 4 through the axis a. Then, the second ice-breaking rod 4 is connected to the third ice-breaking rod 5 through the axis b at the other end, and the second ice-breaking rod 4 is also connected to the axis D. Therefore, when the driving device 1 rotates and drives the first ice-breaking rod 3 to rotate, the first ice-breaking rod 3 can drive the second ice-breaking rod 4 to rotate, and the second ice-breaking rod 4 itself can rotate around the axis D. Therefore, during the rotation process, one end of the second ice-breaking rod 4 can be lifted or pulled down, and the other end moves downward or is lifted accordingly, and drives the third ice-breaking rod 5 to rise or fall accordingly. One end of the third ice-breaking rod 5 is connected to the second ice-breaking rod 4 through the axis b, and the other end has a striker joint portion that cooperates with the striker 8.

[0033] In addition, if Figure 1 As shown, in order to limit the movement of the third ice-breaking rod 5, a movement limiting portion is provided on the locking fork 6. The third ice-breaking rod 5 has a first profile and a second profile on its profile that match the movement limiting portion. Figure 1 It can be seen from the figure that the first contour of the third ice-breaking rod 5 is in the form of a concave curved portion, and the second contour is a straight line portion connected to one end of the first contour.

[0034] The door lock also includes a lock fork 6 and a pawl 7. The lock fork 6 can rotate around the axis E, and different parts thereof can engage with corresponding components during the rotation process. The pawl 7 can rotate around the axis F. Specifically, the lock fork 6 has a self-priming rod engaging portion for abutting against one end of the self-priming rod 2 as described above, a striker engaging portion for accommodating the striker 8, and a first pawl engaging portion and a second pawl engaging portion engaged with the pawl 7. In addition, the lock fork 6 is also provided with a motion limiting portion for limiting the motion of the third ice-breaking rod 5 as described above. The motion limiting portion can be in the form of a cylinder.

[0035] When the lock of the present invention is applied to a vehicle, the door lock can be set on the vehicle door, and the striker 8 can be set on a fixed part of the vehicle, such as a vehicle body. The above-mentioned drive device 1, the second ice-breaking rod 4, the lock fork 6, and the pawl 7 can all be set on a fixed component, such as a bottom plate.

[0036] The above is a description of the various components and the relationships between the vehicle door lock of the present invention. Figures 1 to 4 The working process of each function of the door lock of the present invention is described with reference to each state.

[0037] Figure 1 A plan view showing a door lock of the present invention in a first state is shown, Figure 2 FIG. 2 shows a plan view of the door lock of the present invention in the second state. Figure 1It can be seen that in this state, the lock fork 6 and the striker 8 are not fully engaged, the door lock is in a semi-locked state, and the pawl 7 is engaged with the first pawl engagement portion of the lock fork 6. In this state, if the drive device 1 rotates counterclockwise, the self-priming rod 2 can be driven to move through the axis B, and during the movement of the self-priming rod 2, the part other than the protruding part contacts the limit device, so that the other end of the self-priming rod 2 can be in a lower position and abut against the self-priming rod engagement portion of the lock fork 6, and the self-priming rod 2 pushes the lock fork 6 to rotate around the axis E as the drive device 1 rotates counterclockwise, so that the striker engagement portion of the lock fork 6 is fully engaged with the striker 8, achieving full lock, and achieving Figure 2 The second state shown. The process from half-lock to full-lock can be called a self-priming process, which is applicable to automatically locking the door lock when the door is closed to the half-lock position. In this process, the first ice-breaking rod 3 drives the third ice-breaking rod 5 to move through the second ice-breaking rod 4 when rotating, and the third ice-breaking rod 5 is lifted during the movement, so it does not contact or engage with the striker 8. After the self-priming process is completed, the door lock is locked, and the electric opening or ice-breaking process of the door lock can continue.

[0038] Figure 3 A plan view showing the door lock of the present invention in a third state is shown, Figure 4 FIG. 2 shows a plan view of the door lock of the present invention in a fourth state. Figure 2 In the embodiment, if the driving device 1 rotates clockwise, the third ice-breaking rod 5 descends, thereby engaging with the striker 8, achieving the following effect. Figure 3 The location shown. Figure 3 In the process, the engaging part between the pawl 7 and the lock fork 6 is disengaged, and the driving device 1 rotates in the opposite direction to the self-priming process, that is, clockwise. Then, the first ice-breaking rod 3 drives the third ice-breaking rod 5 to move through the second ice-breaking rod 4 during rotation, and the third ice-breaking rod 5 always supports the striker 8 during the movement. Since the self-priming rod 2 and the pawl are not in contact with or combined with the lock fork 6 during this process, the lock fork 6 rotates under the joint action of the ice-breaking rod 5 and the striker 8. In this process, the movement of the three ice-breaking rods finally supports the striker 8, so that the door lock can be opened, thereby achieving ice breaking.

[0039] As can be seen from the above, the present invention selectively realizes the self-priming function and the ice-breaking function by using a single driving device for forward or reverse rotation. According to the design of the present invention, the number of components required for the door lock is very small, which reduces the cost while realizing the required functions.

[0040] For those skilled in the art, various modifications and variations may be made to the embodiments disclosed above without departing from the scope or spirit of the present invention. Other embodiments of the present invention will be apparent to those skilled in the art from the practice of the present invention disclosed in this specification. This specification and the examples disclosed therein should be considered to be illustrative only, and the true scope of the present invention is specified by the appended claims and their equivalents.

Claims

1. A vehicle door lock, comprising: A locking fork (6), wherein the locking fork (6) is adapted to engage with a striker (8) to achieve locking of the vehicle door lock, A self-priming rod (2), wherein the self-priming rod (2) can cooperate with the lock fork (6) to enable the vehicle door lock to enter a second state from a first state to achieve self-priming; An ice-breaking rod, the ice-breaking rod being capable of engaging with the striker (8) so as to cause the vehicle door lock to enter a fourth state from a third state to achieve ice breaking; Characterized in that the door lock also includes: A driving device (1) is connected to the self-priming rod (2) and the ice-breaking rod, and the driving device can rotate in a first direction or a second direction to drive the self-priming rod to achieve self-priming or drive the ice-breaking rod to achieve ice breaking.

2. The vehicle door lock according to claim 1, characterized in that: It also comprises a pawl (7), which can engage with the first pawl engaging portion or the second pawl engaging portion of the locking fork.

3. The vehicle door lock according to claim 2, characterized in that: The vehicle door lock further comprises a fixing component, and the rotating shafts of the driving device, the locking fork and the pawl are arranged on the fixing component.

4. The vehicle door lock according to any one of claims 1 to 3, characterized in that: One end of the self-priming rod (2) is connected to the driving device via a rotating shaft, and the other end can be engaged with the self-priming rod engaging portion of the locking fork, so that when the driving device rotates in a first direction, the self-priming rod can push the locking fork to rotate.

5. The vehicle door lock according to any one of claims 1 to 3, characterized in that: The ice-breaking rod comprises a first ice-breaking rod (3), a second ice-breaking rod (4) and a third ice-breaking rod (5), one end of the first ice-breaking rod is connected to the driving device via a rotating shaft, and the other end is hinged to one end of the second ice-breaking rod, the other end of the second ice-breaking rod is hinged to one end of the third ice-breaking rod, and the second ice-breaking rod is connected to a fixed component at a portion between the two ends via a rotating shaft.

6. The vehicle door lock according to claim 5, characterized in that: Viewed in a direction parallel to the rotation axis of the driving device, a line connecting the rotation axis of the first ice-breaking rod and the rotation axis of the self-priming rod passes through the rotation axis of the driving device, and the rotation axis of the first ice-breaking rod and the rotation axis of the self-priming rod are located on both sides of the rotation axis of the driving device.

7. The vehicle door lock according to claim 5, characterized in that: The other end of the third ice-breaking rod can be engaged with the striker, and when the driving device rotates in the second direction, the third ice-breaking rod can abut against the striker to achieve ice breaking.

8. The vehicle door lock according to claim 5, characterized in that: The locking fork is provided with a movement limiting portion, and the contour of the third ice-breaking rod has a first contour and a second contour matching with the movement limiting portion.

9. The vehicle door lock according to claim 8, characterized in that: The first contour is in the form of a concave curved portion, and the second contour is a straight line portion connected to one end of the first contour.

10. The vehicle door lock according to claim 9, characterized in that: The movement limiting portion adopts a cylindrical structure.

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