CN120251012A

CN120251012A - A car door lock

Info

Publication number: CN120251012A
Application number: CN202410011903.3A
Authority: CN
Inventors: 邹强; 张红军; 许强; 蔡宏滨; 安亿锡
Original assignee: Kaiyide Automobile System Changshu Co ltd
Current assignee: Kaiyide Automobile System Changshu Co ltd
Priority date: 2024-01-04
Filing date: 2024-01-04
Publication date: 2025-07-04
Also published as: WO2025146156A1

Abstract

The invention provides a door lock, which comprises a driving device, a transmission device and one or two of a self-priming device and an ice breaking device, wherein the driving device can output power in a first direction and a second direction, the transmission device is used for transmitting the power in the first direction and the second direction, and when the driving device outputs the power in the first direction, the transmission device drives the self-priming device to work, and when the driving device outputs the power in the second direction, the transmission device drives the ice breaking device to work. The invention can realize the functions of breaking ice and self-priming by adopting only one motor and a simple gear transmission device, thereby reducing the complexity of the mechanism and the cost of the door lock.

Description

Door lock for vehicle

Technical Field

The invention relates to the technical field of locks, in particular to a door lock of a vehicle.

Background

Motor vehicles have multiple doors for personnel to enter and exit the vehicle. In order to ensure safety, a door lock is installed on the door so that the door can be fixed to the vehicle body by locking the door lock. However, conventional door locks require a user to pull the door with a force to lock the door into the fully latched position, which is both laborious and prone to situations where the door lock is not fully latched. With the development of vehicles, door locks with self-priming function have been developed, which do not require a user to close the door with force, but can be self-actuated to lock when the door is closed to a small opening angle.

In addition, the door lock also has an electric unlocking function. When the door needs to be opened, the door lock can be opened in an electric mode without the need of manual operation of a mechanical structure by a person on the vehicle. However, particularly when facing rainy and snowy days in winter, the door may be frozen or the vehicle may stop on a slope, and after the electric release, the door may not be sprung open by the sealing reaction force. For this purpose, the door lock is correspondingly equipped with an ice breaking function.

Therefore, the door lock needs to realize three functions of electric release, ice breaking and self-priming, which results in more and more complex structure of the door lock. In the solutions known to the applicant, there are two pull wires for actuating the self-priming device and the icebreaking device respectively, which require two corresponding actuators, obviously more complex in structure and control and more costly, and some solutions use a single pull wire and a single actuator for driving both the self-priming device and the icebreaking device. However, as more and more vehicles use such intelligent door locks, there remains a need to develop new door locks.

Disclosure of Invention

Considering the intelligent requirement of the vehicle and the self-priming ice breaking function requirement of the door lock of the vehicle, the invention aims to provide a door lock structure with fewer parts and simpler structure to realize the ice breaking and self-priming functions of the door lock.

To achieve the above object, the present invention provides a door lock for a vehicle, comprising:

a driving device capable of outputting power in a first direction and a second direction;

a transmission for transmitting power in the first and second directions;

The door lock further comprises one or two of a self-priming device and an ice breaking device, and when the driving device outputs power in a first direction, the transmission device drives the self-priming device to work, and when the driving device outputs power in a second direction, the transmission device drives the ice breaking device to work.

According to one aspect of the invention, the drive means is an electric motor and the transmission means has one or more gears.

According to one aspect of the invention, the transmission comprises a worm connected to the output shaft of the motor and a final gear.

According to one aspect of the invention, the transmission device further comprises a first gear and a second gear, the first gear and the second gear are duplex gears, and the worm, the first gear, the second gear and the last gear are sequentially arranged on a transmission path.

According to one aspect of the invention, the self-priming device includes a self-priming lever engageable with a self-priming lever engagement on a ratchet wheel and driving rotation of the ratchet wheel for self-priming, and/or

The ice breaking device includes an ice breaking lever engageable with a striker to perform an ice breaking action.

According to one aspect of the invention, the self-priming lever and the icebreaking lever are arranged on one gear of the transmission and have a common rotational axis which is offset from the rotational axis of the one gear by a first distance.

According to one aspect of the invention, the self-priming device further comprises a self-priming rod spring, the ice breaking device further comprises an ice breaking rod spring, the self-priming rod spring and the ice breaking rod spring are torsion springs, and the axes of the self-priming rod spring and the ice breaking rod spring are the same and are offset from the rotation shaft of the gear by a second distance.

According to one aspect of the invention, it further comprises a pull wire, an inner release lever and an interruption device capable of rotating under the action of the pull wire and the inner release lever and preventing self-priming of the self-priming device.

According to one aspect of the invention, a cover plate is further provided, a protruding portion is provided on the cover plate, two stopping portions are provided on the last gear of the transmission device, and when the last gear rotates in the first direction and the second direction, the two stopping portions can be matched with the protruding portion to achieve limiting.

According to one aspect of the invention, the body of the final gear is made of plastic, a metal skeleton is arranged on the body of the final gear, and the two stopping parts are arranged on the metal skeleton.

From the above, the invention provides a door lock, which can realize the functions of breaking ice and self-priming by adopting only one motor and a simple gear transmission device, thereby reducing the complexity of a mechanism and the cost of the door lock.

Other features and advantages of the present invention will be described in the following detailed description of the invention, taken in conjunction with the accompanying drawings.

Drawings

The features and advantages of the present invention will be apparent from the detailed description provided hereinafter with reference to the accompanying drawings. It is to be understood that the following drawings are merely schematic and are not necessarily drawn to scale, and are not to be construed as limiting the invention, in which:

Fig. 1 shows a perspective view of a door lock according to the invention from one perspective.

Fig. 2 shows a perspective view from another perspective than that of fig. 1.

Fig. 3 shows a perspective view of the door lock according to the invention from another perspective, only the internal components being shown.

Fig. 4 shows a perspective view from another perspective than that of fig. 3.

Fig. 5 shows a schematic operation of the door lock of the invention in a first state when the self-priming function is performed.

Fig. 6 shows a schematic operation of the door lock of the invention in a second state when the self-priming function is performed.

Fig. 7 shows a schematic operation of a part of the components of the door lock according to the invention in a second state when the self-priming function is performed.

Fig. 8 shows a schematic operation of the door lock of the present invention in a third state when the self-priming function is performed.

Fig. 9 shows a schematic operation of a part of the components of the door lock according to the invention in a third state when the self-priming function is performed.

Fig. 10 shows a schematic operation of the door lock of the present invention in a first state when the interrupt function is performed.

Fig. 11 shows a schematic operation of the door lock of the present invention in a second state when the interrupt function is performed.

Fig. 12 shows a schematic operation of the door lock of the present invention in a first state when performing an ice breaking function.

Fig. 13 shows a schematic operation of the door lock of the present invention in a second state when the ice breaking function is performed.

Fig. 14 shows a schematic structural view of the self-priming lever and the icebreaking lever in the door lock of the present invention.

Fig. 15 shows a schematic structural view of a third gear in the door lock of the present invention.

Fig. 16 shows a schematic structural view of a cover plate in the door lock of the present invention.

Fig. 17 shows a partial schematic view of a third gear shaft in the door lock of the present invention.

Fig. 18 shows a schematic view of the torsion spring installed in the third gear in the door lock of the present invention.

All the figures are schematic and not necessarily to scale, and they show only those parts which are necessary in order to elucidate the invention, the other parts being omitted or merely mentioned. That is, the present invention may include other components in addition to those shown in the drawings.

Detailed Description

Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding and enabling description of the invention to one skilled in the art. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. Furthermore, it should be understood that the invention is not limited to specific described embodiments. Rather, any combination of the features and elements described below is contemplated to implement the invention, whether or not they relate to different embodiments. Thus, the following aspects, features, embodiments and advantages are merely illustrative and should not be considered elements or limitations of the claims except where explicitly set out in a claim.

Terms such as "first," "second," and the like are used hereinafter to describe elements of the present application, and are merely used for distinguishing between the elements and not for limiting the nature, order, or number of such elements. The terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components other than the listed elements/components.

Fig. 1 shows a perspective view of a door lock according to the invention from one perspective. As can be seen from the aperture in fig. 1, the door lock has a housing formed by a cover 1 and a housing 2 to form a receiving space in which the individual moving parts of the door lock can be at least partially received. In addition, the housing provides various electrical and mounting interfaces for the door lock. Fig. 2 shows a perspective view from another perspective than that of fig. 1. As can be seen from fig. 2, a base plate 3 is also provided on the housing 2, the base plate 3 being a mounting structure for some moving parts. A slot is provided in the base plate 3 to accommodate the striker 4. Furthermore, the striker 4 can move in the slot, thereby effecting locking or unlocking.

As an example, the housing and the components accommodated therein and mounted thereon are provided on the vehicle door and can thus move together with the vehicle door. The striker 4 is then correspondingly mounted on the vehicle body or on another component fixed relative to the vehicle body. Whereby a ratchet in a door lock mounted to the door can be engaged with the striker when the door is closed, thereby effecting locking.

The structure of the moving member and the moving process thereof in the door lock of the present invention will be described in detail. Fig. 3 shows a perspective view of the door lock according to the invention from another perspective, only the internal components being shown. As can be seen from the upper part of fig. 3, a pull wire 5 is provided, which pull wire 5 is connected to an inner release lever 6, and the inner release lever 6 is mounted on an inner release lever shaft 7 and is rotatable about the inner release lever shaft 7. Thereby, when the pull wire 5 is pulled, the inner release lever 6 can be rotated, thereby realizing a specific function of the door lock.

As can be seen from the left side in fig. 3, the output shaft of the motor 9 is provided with a worm 8, the worm 8 being in engagement with a first gear 10. The first gear 10 preferably takes the form of a double gear, so that it has two gear parts of different diameters. The first gear 10 is fixed by a first gear shaft 11 and is rotatable about the first gear shaft 11. Specifically, the large gear of the first gear 10 meshes with the worm 8, and the small gear of the first gear 10 meshes with the second gear 12.

The second gear 12 preferably also takes the form of a double gear and therefore also has two gear parts of different diameters. The second gear 12 is fixed by a second gear shaft 13 and is rotatable about the second gear shaft 13. Specifically, the large gear of the second gear 12 meshes with the small gear of the first gear 10, and the small gear of the second gear 12 meshes with the third or final gear 14. The final gear 14 is disposed on the third gear shaft 16.

As a specific embodiment of the present invention, a seal ring mounting groove is further provided on the final gear 14 to mount the seal ring 15. The last gear 14 can be matched with the shell 2, so that the sealing ring 15 can ensure the sealing between the inside of the shell and the external environment, and water and dust prevention can be realized.

Fig. 4 shows a perspective view from another perspective than that of fig. 3. In particular, fig. 4 shows the other side, or back side, of the view in fig. 3. The motor, worm, first gear, second gear and third gear can still be seen in fig. 4, and will not be described again here. The third gear is provided with a mounting shaft 20 that is not coaxial with the third gear shaft, and the mounting shaft 20 is fixedly provided with a self-sucking rod 18 and an ice breaking rod 22. Thus, when the third gear rotates, the self-priming lever 18 and the icebreaking lever 22 may rotate therewith. A spacer 21 is also provided on the mounting shaft 20.

Fig. 14 shows a schematic structural view of the self-priming lever and the icebreaking lever in the door lock of the present invention separately, wherein the upper diagram of fig. 14 shows the third gear with the self-priming lever and the icebreaking lever mounted thereon, while the middle diagram shows the third gear with only the self-priming lever mounted thereon, and the lower diagram shows the third gear with only the icebreaking lever mounted thereon. The shape of the self-sucking rod and the icebreaking rod can be clearly seen from fig. 14. It should be noted that the specific shape in fig. 14 is only an example, and the self-sucking rod and the icebreaking rod may take other shapes as long as the functions thereof can be achieved.

Fig. 15 shows a schematic structural view of a third gear in the door lock of the present invention. It can be seen that the third gear is provided with a hole for the insertion of the mounting shaft 20, in addition to a hole for the passage of the third gear shaft in the middle of the gear. Fig. 15 also shows other structures, which will be described later.

Returning to fig. 4, it can also be seen that self-priming lever spring 19 and icebreaking lever spring 23. Both can adopt the form of torsional spring to be used for the reset of self-sucking rod and icebreaking rod. As an improvement of the present invention, fig. 18 shows a schematic view of the torsion spring installed in the third gear in the door lock of the present invention. As can be seen from fig. 18, the self-priming lever spring 19 and the icebreaking lever spring 23 are accommodated in the last gear 14 in the radial direction, and the rotation axis (through O1) of the last gear 14 is not coincident with the axes (through O2) of the two torsion springs, but is offset to some extent. The eccentric structure can reduce the working angle of the torsion spring, thereby prolonging the durability life of the spring. This offset is small and significantly smaller than the offset of the mounting shaft 20 from the axis of rotation of the final gear 14.

Also shown in fig. 4 is a ratchet wheel 24 which is rotatable about a ratchet shaft 25. The ratchet 24 is provided with a groove for engagement with the striker 4. In addition, the ratchet 24 is provided with a portion that engages the pawl 26. The pawl 26 is provided on a pawl shaft 27 and is rotatable about the pawl shaft 27.

In the lower part of fig. 4, the pull wire and the inner release lever can be seen. Specifically, the inner release lever is provided with a contact portion 6a so as to act on one end of the interrupt drive lever 30. The interrupt drive rod 30 may be mounted to a fixed component, for example, by a threaded fastener 31, and may rotate about the axis of the threaded fastener 31. The other end of the interrupt drive lever 30 may then engage one end of the interrupt lever 28 to drive rotation of the interrupt lever 28 about the interrupt lever axis 29. The other end of the interrupt lever 28 may engage the self-priming lever to prevent movement of the self-priming lever, thereby effecting interruption of the self-priming operation.

The structure of the door lock of the present invention is described in detail with reference to the accompanying drawings. The operation of the door lock will be described with reference to fig. 5 to 13. In these figures, only the components related to the relevant functions are shown for simplicity and ease of understanding. Likewise, for ease of understanding, views from bottom and top or other perspectives are shown. The rotation direction of the member is indicated by a curved arrow, the movement direction of the member is indicated by a straight arrow, and the engagement state of the key member is indicated by a broken line frame.

Fig. 5 shows a schematic operation of the door lock of the invention in a first state when the self-priming function is performed. In the first state, the ratchet and pawl are in the half-lock position shown in phantom, where the door is open at a small angle. At this time, the motor starts to work and drives the first gear, the second gear and the third gear to rotate in the illustrated direction in sequence. The third gear drives the self-priming rod on the third gear to rotate when rotating. As shown by the dashed box on the left side of the upper drawing in fig. 5, the self-priming lever is not yet engaged with the self-priming lever engagement portion on the ratchet wheel.

Fig. 6 shows a schematic operation of the door lock of the invention in a second state when the self-priming function is performed. In the second state, the self-priming function is in a state of just starting to work. At this time, the motor continues to drive the gears in the direction shown in fig. 5, at which time the self-priming lever contacts the self-priming lever engagement on the ratchet wheel, which also begins to engage the striker. In this state, the state of the joint of the self-priming lever and the self-priming lever on several wheels can be seen in fig. 7. At this time, in the upper view of fig. 6, since the self-priming lever pushes the ratchet wheel downward to rotate, the ratchet wheel drives the striker to move upward in the groove on the base plate 3 due to engagement with the striker during rotation, thereby achieving automatic suction.

Fig. 8 shows a schematic operation of the door lock of the present invention in a third state when the self-priming function is performed. In this state, self priming has been completed, the ratchet is in a fully engaged state with the striker, and the door lock is in a locked state. Fig. 9 shows a state of the self-priming lever engagement portion of the self-priming lever and the ratchet at this time.

The interrupt function of the door lock of the present invention will be described with reference to fig. 10 and 11, wherein fig. 10 shows a schematic operation of the door lock of the present invention in a first state when the interrupt function is performed, and fig. 11 shows a schematic operation of the door lock of the present invention in a second state when the interrupt function is performed. As can be seen from fig. 10, in the first state, the self priming operation is ongoing. In this state, if the wire pulls the inner release lever to rotate, the contact portion 6a on the inner release lever acts on and rotates one end of the interrupt driving lever 30, and the rotation of the interrupt driving lever 30 in turn causes the other end thereof to engage with one end of the interrupt operating lever 28, thereby driving the interrupt operating lever 28 to rotate, and in turn, abutting against the interrupt operating lever engagement portion on the self-priming lever, thereby preventing the movement of the self-priming lever, thereby achieving interruption of the self-priming operation. In fig. 10, the self-priming lever is operating and has engaged the self-priming lever engagement of the ratchet, and as the interrupting operation proceeds, it can be seen from the lower left part of fig. 11 that the self-priming process has been interrupted, at which point the self-priming lever has disengaged from the self-priming lever engagement of the ratchet.

The ice breaking function of the door lock of the present invention will be described with reference to fig. 12 and 13, wherein fig. 12 shows a schematic operation of the door lock of the present invention in a first state when the ice breaking function is performed, and fig. 13 shows a schematic operation of the door lock of the present invention in a second state when the ice breaking function is performed. As can be seen from fig. 12, there is now a distance between the icebreaking bar and the striker. Then, the motor rotates in the other direction opposite to the self-priming operation, and the gears are driven to rotate in the other direction, so that the ice breaking rod is driven to move towards the firing pin. As the icebreaking bar abuts the upper striker and continues to push the striker, the striker is pushed and moves within the slot in the base plate, thereby effecting icebreaking.

In fact, as shown in fig. 14, in the door lock of the present invention, only the self-priming lever may be provided to achieve only the self-priming function, or only the ice breaking lever may be provided to achieve only the ice breaking function. The two functions are performed independently and do not interfere with each other or need to cooperate with each other.

Returning again to fig. 3, it can be seen that a cover plate 17 is also provided therein. Fig. 16 shows a schematic structural view of a cover plate in the door lock of the present invention. As can be seen from fig. 3 and 16, the cover plate 17 has a hole through which the third gear shaft 16 passes, and is provided with a protruding portion 17a extending in the axial direction of the third gear shaft 16. Referring again to fig. 15, there is shown an annular groove less than one full turn provided in the final gear 14, the annular groove being flanked by a first stop 14a and a second stop 14b. The projection 17a is located in the annular groove. The cover plate 17 also has a hole for passing the fixing shaft at the upper right in the drawing shown in fig. 16, so that it can be fixedly disposed. Specifically, referring to fig. 4, the hole may be provided for the pawl shaft 27 to pass through. Therefore, when the final gear 14 rotates, the cover plate 17 is not moved, so that the limit of the final gear 14 can be realized through the stop of the first stop part 14a and the second stop part 14b at the two ends of the annular groove and the protruding part 17a, and the movement angle of the third gear is prevented from being excessively large.

Further, considering that the final gear 14 may be made of plastic, a metal skeleton 14c may be provided in the final gear 14, the metal skeleton 14c having corresponding two stoppers, thereby increasing strength.

Furthermore, a first plate 17b and a second plate 17c are provided on the cover plate 17 so as to axially limit the final gear 14.

Fig. 17 shows a partial schematic view of a third gear shaft in the door lock of the present invention. The last gear 14 is not shown in the figures. As can be seen from fig. 17, the third gear shaft 16 is fixed to the base plate 3 at one end and to the cover plate 17 at the other end, thereby increasing strength.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments disclosed above without departing from the scope or spirit of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples disclosed herein be considered as exemplary only, with a true scope of the invention being indicated by the following claims and their equivalents.

Claims

1. A door lock for a vehicle, comprising:

a transmission for transmitting power in the first and second directions;

The door lock is characterized by further comprising one or two of a self-priming device and an ice breaking device, wherein when the driving device outputs power in a first direction, the transmission device drives the self-priming device to work, and when the driving device outputs power in a second direction, the transmission device drives the ice breaking device to work.

2. The door lock according to claim 1, wherein,

The drive means is an electric motor (9) and the transmission means has one or more gears.

3. The door lock according to claim 2, wherein,

The transmission comprises a worm (8) connected with the output shaft of the motor and a final gear (14).

4. The door lock according to claim 3, wherein,

The transmission device further comprises a first gear (10) and a second gear (12), the first gear and the second gear are duplex gears, and the worm, the first gear, the second gear and the last gear are sequentially arranged on a transmission path.

5. The door lock according to any one of claims 1 to 4, wherein,

The self-priming device includes a self-priming lever (18) that is engageable with a self-priming lever engagement on a ratchet (24) and drives rotation of the ratchet to perform a self-priming action, and/or

The ice breaking device comprises an ice breaking lever (22) which can be engaged with a striker (4) for an ice breaking action.

6. The door lock according to claim 5, wherein,

The self-sucking rod and the ice breaking rod are arranged on one gear of the transmission device and have a common rotating shaft, and the rotating shaft is offset from the rotating shaft of the one gear by a first distance.

7. The door lock according to claim 6, wherein,

The self-priming device further comprises a self-priming rod spring (19), the ice breaking device further comprises an ice breaking rod spring (23), the self-priming rod spring and the ice breaking rod spring are torsion springs, and the axes of the self-priming rod spring and the ice breaking rod spring are the same and offset by a second distance from the rotating shaft of the gear.

8. The door lock according to any one of claims 1 to 4, wherein,

The self-priming device also comprises a stay wire (5), an inner release rod (6) and an interruption device, wherein the interruption device can rotate under the action of the stay wire and the inner release rod and prevent the self-priming device from self-priming.

9. The door lock according to any one of claims 1 to 4, wherein,

The novel transmission device is characterized by further comprising a cover plate (17), wherein a protruding portion (17 a) is arranged on the cover plate, two stop portions are arranged on a last gear (14) of the transmission device, and the last gear can be respectively matched with the protruding portion to achieve limit when rotating in a first direction and a second direction.

10. The door lock according to claim 9, wherein,

The body of last gear is made by plastics be provided with metal skeleton (14 c) on the body of last gear, two backstop portions set up in on the metal skeleton.