Automobile door self-suction lock transmission structure and automobile door lock

Abstract

The utility model provides a car door self -absorption lock transmission structure includes the casing and sets up transmission mechanism in the casing, transmission structure is connected with the thrust seat, the casing sets up on the car door, and the thrust seat is connected with the car door lock, and transmission mechanism can push the latch bolt into the lock catch, and keeps self -locking, prevents the latch bolt from happening to shake or slackening in the lock catch, has improved the reliability of car door self -absorption lock transmission structure, effectively avoids the dangerous situation that appears suddenly opens the car door in the vehicle running process, and the utility model further provides a car door lock including above -mentioned car door self -absorption lock transmission structure, simple and reliable structure is favorable to reduce the production and maintenance cost of car door lock.

Description

Technical Field

[0001] This utility model belongs to the field of automobile door locks. Specifically, this utility model relates to an automobile door self-closing lock transmission structure and an automobile door lock. Background Technology

[0002] The automatic door lock is also known as the electric door lock. Its working principle is mainly to achieve automatic door closing and locking through the coordinated action of motor and mechanical structure. The working process of the automatic door lock is usually divided into the following stages: (1) Initial closing stage: When the door is manually pushed to a distance (usually a few centimeters) from the closed position, the automatic door lock starts to work. At this time, the latch on the door will gradually approach the latch on the door frame. There is a sensor inside the latch that can detect the approach of the latch; (2) Driving stage: After the sensor detects the approach of the latch, it will send a signal to the vehicle's ECU (electronic control unit). After receiving the signal, the ECU will issue a command to start the automatic door lock and push the latch to move into the latch; (3) Locking stage: When the latch is fully inserted into the latch, the mechanical locking mechanism inside the latch will automatically lock the latch to prevent it from popping out, thus locking the door.

[0003] In existing technologies, the lack of a self-locking structure in car door self-closing locks necessitates the installation of two sets of motors and transmission structures on the door to separately achieve the functions of unlocking and locking. This results in a complex structure for existing car door self-closing locks, making repairs difficult and maintenance costs high in the event of a malfunction. Furthermore, the gears, linkages, and other mechanical components inside existing car door self-closing locks are prone to wear during frequent use due to the driving force of the two sets of motors and transmission structures. Over time, this leads to a decrease in the precision of the engagement, making it easy for the latch and buckle to detach. This can result in a dangerous situation where the door suddenly opens while the vehicle is in motion, endangering the safety of the driver and passengers.

[0004] To address the aforementioned issues, patent application number 2024108566228 provides a car door lock engagement interruption mechanism and a car door lock. The car door lock engagement interruption mechanism includes a ratchet assembly capable of forming an unlocked, half-locked, and fully locked state, a ratchet assembly for self-priming, a self-priming push rod, and a first driving device. It also includes a release linkage rod that rotates under the action of the interruption assembly, causing the self-priming interruption linkage to slide. During the sliding process, the self-priming interruption linkage disengages the self-priming push rod from the ratchet assembly. The interruption assembly includes an electrically driven self-priming interruption assembly and a mechanical emergency pull self-priming interruption assembly, but this mechanism fails to solve the aforementioned problems.

[0005] Therefore, in order to improve or solve at least one of the above problems, a car door self-closing lock transmission structure and car door lock are provided, which are simple and reliable in structure, can realize the functions of unlocking and locking the car door, can effectively avoid the dangerous situation of the car door suddenly opening during the vehicle's operation, and can reduce the number of parts and reduce production and maintenance costs. Utility Model Content

[0006] This utility model is designed to solve the aforementioned problems. Its purpose is to provide a simple and reliable automotive door self-closing lock transmission structure and door lock that can achieve both door unlocking and locking functions, effectively preventing the dangerous situation of sudden door opening during vehicle operation, reducing the number of parts, and lowering production and maintenance costs. To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides a self-closing transmission structure for automobile doors, which includes a housing and a transmission mechanism disposed within the housing. The transmission mechanism is connected to a thrust seat, and the thrust seat is connected to the door lock.

[0008] The self-closing transmission structure for car doors provided by this utility model may also have the following features: the transmission mechanism includes a drive motor, a primary transmission mechanism, and a secondary transmission mechanism. The drive motor is connected to the primary transmission mechanism, the primary transmission mechanism is connected to the secondary transmission mechanism, and the secondary transmission mechanism is connected to the thrust seat.

[0009] The self-closing transmission structure for car doors provided by this utility model may also have the following features: the primary transmission mechanism includes a first helical gear, a second helical gear, and a pin. The first helical gear is sleeved on the motor shaft of the drive motor, the second helical gear meshes with the first helical gear, the second helical gear is sleeved on the pin, and the pin is movably mounted on the housing.

[0010] The self-closing transmission structure for automobile doors provided by this utility model may also have the following feature: the number of teeth of the first helical gear is less than the number of teeth of the second helical gear.

[0011] The self-closing transmission structure for automobile doors provided by this utility model may also have the following features: the secondary transmission mechanism includes a worm, a worm gear, and a lead screw; the worm is mounted on a pin and meshes with the worm gear; the worm gear is sleeved on the lead screw; the lead screw is movably mounted on the housing; and the thrust seat is movably mounted on the lead screw.

[0012] The self-closing transmission structure for automobile doors provided by this utility model may also have the following feature: the helix angle of the worm is smaller than the equivalent friction angle between the worm and the turbine.

[0013] The self-closing transmission structure for automobile doors provided by this utility model may also have the following features: the thrust seat is provided with a threaded hole that matches the lead screw; the thrust seat is movably sleeved on the lead screw; the housing is provided with a sliding groove; and the thrust seat is provided with a sliding boss that matches the sliding groove.

[0014] The self-closing transmission structure for automobile doors provided by this utility model may also have the following features: a trigger protrusion is provided on the thrust seat, and a micro switch is provided on the housing.

[0015] The self-closing lock transmission structure for automobile doors provided by this utility model may also have the following feature: the thrust seat is provided with a connecting protrusion, which is connected to the door lock.

[0016] This utility model provides a car door lock, which includes the aforementioned car door self-closing transmission structure.

[0017] The technical advantages of this utility model are as follows: The car door self-closing lock transmission structure provided by this utility model includes a housing and a transmission mechanism disposed within the housing. The transmission mechanism is connected to a thrust seat. The housing is disposed on the car door, and the thrust seat is connected to the door lock. The transmission mechanism can push the latch into the latch and maintain self-locking, preventing the latch from shaking or loosening within the latch. This improves the reliability of the car door self-closing lock transmission structure and effectively avoids the dangerous situation of the car door suddenly opening during vehicle operation. This utility model also provides a car door lock including the above-mentioned car door self-closing lock transmission structure. The structure is simple and reliable, which helps to reduce the production and maintenance costs of car door locks.

[0018] The self-closing lock transmission structure and door lock structure of the car door provided by this utility model are simple and reliable, and can realize the functions of unlocking and locking the car door. They can effectively avoid the dangerous situation of the car door suddenly opening during the driving process, and can reduce the number of parts and reduce production and maintenance costs. Attached Figure Description

[0019] This manual includes the following figures, which illustrate the following:

[0020] Figure 1 This is a schematic diagram of the transmission structure of the self-closing lock of a car door in an embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the transmission mechanism in an embodiment of this utility model. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the transmission mechanism in an embodiment of this utility model. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the structure of the second helical gear and worm in an embodiment of this utility model;

[0024] Figure 5 This is a schematic diagram of the thrust seat in an embodiment of this utility model;

[0025] Figure 6 This is a schematic diagram of the self-closing transmission structure of a car door in operation, as described in an embodiment of this utility model.

[0026] The components in the diagram are labeled as follows: housing-10, slide groove-11, transmission mechanism-20, drive motor-21, primary transmission mechanism-22, first helical gear-221, second helical gear-222, pin-223, secondary transmission mechanism-23, worm gear-231, turbine gear-232, lead screw-233, thrust seat-30, threaded hole-31, sliding boss-32, trigger protrusion-33, connecting protrusion-34, and micro switch-40. Detailed Implementation

[0027] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution, and to facilitate its implementation.

[0028] Figure 1 This is a schematic diagram of the transmission structure of the self-closing lock for automobile doors in an embodiment of this utility model.

[0029] like Figure 1 As shown, the self-closing transmission structure for car doors provided by this utility model includes a housing 10 and a transmission mechanism 20 disposed within the housing 10. The transmission mechanism 20 is connected to a push seat 30. The housing 10 is disposed on the car door, and the push seat 30 is connected to the latch of the car door lock. The transmission mechanism 20 can push the latch into the latch through the push seat 30. At the same time, the transmission mechanism 20 can maintain self-locking, preventing the transmission mechanism 20 from becoming loose and preventing the latch from shaking or becoming loose within the latch. This improves the reliability of the self-closing transmission structure for car doors and effectively avoids the dangerous situation of the car door suddenly opening during vehicle operation.

[0030] Figure 2 This is a schematic diagram of the transmission mechanism in an embodiment of this utility model. Figure 1 ; Figure 3 This is a schematic diagram of the transmission mechanism in an embodiment of this utility model. Figure 2 .

[0031] like Figure 2 and Figure 3As shown, the transmission mechanism 20 includes a drive motor 21, a primary transmission mechanism 22, and a secondary transmission mechanism 23. The drive motor 21 is mounted on the housing 10 and is connected to the primary transmission mechanism 22. The primary transmission mechanism 22 is connected to the secondary transmission mechanism 23, and the secondary transmission mechanism 23 is connected to the thrust seat 30. The primary and secondary transmission mechanisms 22 and 23 can increase the torque output of the drive motor 21, ensuring that the thrust seat 30 can smoothly and stably drive the locking tongue into the latch, thus improving the reliability of the structure. The transmission mechanism 20 allows the drive motor 21 to reduce speed and increase torque, resulting in very small current fluctuations in the drive motor 21, which helps reduce the heat generation of the drive motor 21.

[0032] like Figure 2 and Figure 3 As shown, the primary transmission mechanism 22 includes a first helical gear 221, a second helical gear 222, and a pin 223. The first helical gear 221 is sleeved on the motor shaft of the drive motor 21 and connected by a key. The second helical gear 222 is sleeved on the pin 223, and the end of the pin 223 is movably inserted into the housing 10, so that the drive motor 21 can drive the first helical gear 221, the second helical gear 222, and the pin 223 to rotate. The number of teeth of the first helical gear 221 is less than the number of teeth of the second helical gear 222, which helps to increase the output torque of the drive motor 21 and ensures that the thrust seat 30 can smoothly and stably drive the locking tongue and push it into the latch, thus improving the reliability of the structure.

[0033] like Figure 2 and Figure 3 As shown, the secondary transmission mechanism 23 includes a worm 231, a turbine 232, and a lead screw 233. The worm 231 is mounted on a pin 223 and meshes with the turbine 232. The turbine 232 is mounted on the lead screw 233 in an integral plastic-coated manner. The end of the lead screw 233 is rotatably mounted on the housing 10. The thrust seat 30 is movably mounted on the lead screw 233 through a threaded engagement. The worm 231 and turbine 232 help to further increase the torque output of the drive motor 21, ensuring that the thrust seat 30 can smoothly and stably drive the locking tongue and push it into the latch, thus improving the reliability of the structure.

[0034] The structure between the primary transmission mechanism 22 and the secondary transmission mechanism 23 is simple and reliable, which can reduce wear during use, reduce the impact of long-term use on the fitting accuracy, and prevent the lock tongue from falling off from the lock buckle. During vehicle operation, it effectively avoids the dangerous situation of the door suddenly opening, thus improving the safety of the driver and passengers.

[0035] The helix angle of the worm 231 is smaller than the equivalent friction angle between the worm 231 and the turbine 232. The component of the frictional force on the worm 231 along the helix direction can prevent the turbine 232 from driving the worm 231 to rotate, so that the turbine 232 can only be driven to rotate by the worm 231, thus realizing the self-locking of the transmission mechanism 20. This can effectively prevent the latch from shaking or loosening in the latch, improve the reliability of the car door self-closing lock transmission structure, and effectively avoid the dangerous situation of the door suddenly opening during vehicle operation.

[0036] Figure 4 This is a schematic diagram of the structure of the second helical gear and worm in an embodiment of this utility model;

[0037] like Figure 4 As shown, the second helical gear 222, worm 231 and pin 223 are made by integral injection molding, which helps to reduce production costs, improve the structural strength and reliability between the second helical gear 222 and worm 231, help to ensure the smooth transmission of the transmission mechanism 20, and improve the service life and reliability of the car door self-closing lock transmission structure provided by this utility model.

[0038] Figure 5 This is a schematic diagram of the thrust seat in an embodiment of this utility model.

[0039] like Figure 5 As shown, the thrust seat 30 is provided with a threaded hole 31 that matches the lead screw 233. The thrust seat 30 is movably sleeved on the lead screw 233 through the threaded hole 31. The rotational motion of the lead screw 233 is converted into linear motion of the thrust seat 30 along the length of the lead screw 233 through the threaded engagement. The housing 10 is provided with a sliding groove 11, and the thrust seat 30 is provided with a sliding boss 32 that matches the sliding groove 11. The sliding groove 11 can limit the thrust seat 30 and prevent the thrust seat 30 from flipping during linear motion. This ensures that the thrust seat 30 can smoothly and stably drive the locking tongue and push it into the lock, thus improving the reliability of the structure.

[0040] like Figure 5 As shown, the thrust seat 30 is provided with a trigger protrusion 33, and the housing 10 is provided with a micro switch 40. When the thrust seat 30 moves linearly along the length of the lead screw 233, it passes the micro switch 40, and the trigger protrusion 33 abuts against the micro switch 40, triggering the micro switch 40. The micro switch 40 is connected to the ECU. When the trigger protrusion 33 triggers the micro switch 40, the ECU issues a reset command, and the drive motor 21 drives the thrust seat 30 to reset through the transmission mechanism 20 so that it can work again, thus improving the reliability of the structure.

[0041] The thrust seat 30 is provided with a connecting protrusion 34, which is connected to the door lock tongue of the vehicle door, making it convenient to disassemble the thrust seat 30 and the lock tongue. In case of failure, they can be disassembled and repaired separately, which helps to reduce production and maintenance costs.

[0042] Figure 6 This is a schematic diagram of the self-closing transmission structure of a car door in operation, as described in an embodiment of this utility model.

[0043] like Figure 6 As shown, when the drive motor 21 rotates, the first helical gear 221 rotates, and the second helical gear 222 and worm gear 231 also rotate, driving the worm gear 232 and lead screw 233 to rotate, which in turn drives the thrust seat 30 to move axially along the lead screw 233, thereby unlocking or locking the door self-closing lock. After the self-closing door is unlocked, the thrust seat 30 needs to return to the position that cooperates with the micro switch 40 to reset the system.

[0044] This utility model also provides a car door lock including the above-mentioned car door self-closing lock transmission structure, which can effectively and reliably unlock or lock the car door, and can automatically close the car door without forcefully pushing the door. Even if the car door is not fully closed, just gently closing it will cause the self-closing lock to work and pull the car door to a fully closed state, which is convenient for passengers to operate, especially suitable for the elderly, children or people with mobility difficulties. In addition, if the traditional door closing method is too forceful, it will exert a large impact on the door hinges, door lock and other components, which may cause the components to loosen and wear over time. The self-closing transmission structure and door lock provided by this invention can prevent the door from being closed forcefully, thus reducing damage to the door and related body components and lowering maintenance costs. Furthermore, the self-closing transmission structure and door lock ensure that the door is completely closed, preventing the risk of accidental opening during driving due to a loose door, protecting the safety of occupants, and enhancing the overall safety performance of the vehicle.

[0045] The role and effect of the embodiments

[0046] The self-closing transmission structure for car doors provided by this utility model includes a housing 10 and a transmission mechanism 20 disposed within the housing 10. The transmission mechanism 20 is connected to a push seat 30. The housing 10 is disposed on the car door, and the push seat 30 is connected to the latch of the car door lock. The transmission mechanism 20 can push the latch into the latch through the push seat 30. At the same time, the transmission mechanism 20 can maintain self-locking, preventing the transmission mechanism 20 from becoming loose and preventing the latch from shaking or loosening within the latch. This improves the reliability of the self-closing transmission structure for car doors and effectively avoids the dangerous situation of the car door suddenly opening while the vehicle is in motion.

[0047] This utility model also provides a car door lock including the above-mentioned car door self-closing lock transmission structure, which can effectively and reliably unlock or lock the car door, and can automatically close the car door without forcefully pushing the door. Even if the car door is not fully closed, just gently closing it will cause the self-closing lock to work and pull the car door to a fully closed state, which is convenient for passengers to operate, especially suitable for the elderly, children or people with mobility difficulties. In addition, if the traditional door closing method is too forceful, it will exert a large impact on the door hinges, door lock and other components, which may cause the components to loosen and wear over time. The self-closing transmission structure and door lock provided by this invention can prevent the door from being closed forcefully, thus reducing damage to the door and related body components and lowering maintenance costs. Furthermore, the self-closing transmission structure and door lock ensure that the door is completely closed, preventing the risk of accidental opening during driving due to a loose door, protecting the safety of occupants, and enhancing the overall safety performance of the vehicle.

[0048] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A self-closing transmission structure for an automobile door, characterized in that, It includes a housing (10) and a transmission mechanism (20) disposed within the housing (10). The transmission mechanism (20) is connected to a thrust seat (30), which is connected to a door lock.

2. The automotive door self-closing lock transmission structure according to claim 1, characterized in that, The transmission mechanism (20) includes a drive motor (21), a primary transmission mechanism (22) and a secondary transmission mechanism (23). The drive motor (21) is connected to the primary transmission mechanism (22), the primary transmission mechanism (22) is connected to the secondary transmission mechanism (23), and the secondary transmission mechanism (23) is connected to the thrust seat (30).

3. The automotive door self-closing lock transmission structure according to claim 2, characterized in that, The primary transmission mechanism (22) includes a first helical gear (221), a second helical gear (222), and a pin (223). The first helical gear (221) is sleeved on the motor shaft of the drive motor (21). The second helical gear (222) meshes with the first helical gear (221). The second helical gear (222) is sleeved on the pin (223). The pin (223) is movably mounted on the housing (10).

4. The automotive door self-closing lock transmission structure according to claim 3, characterized in that, The number of teeth of the first helical gear (221) is less than the number of teeth of the second helical gear (222).

5. The automotive door self-closing lock transmission structure according to claim 4, characterized in that, The secondary transmission mechanism (23) includes a worm (231), a turbine (232), and a lead screw (233). The worm (231) is mounted on the pin (223) and meshes with the turbine (232). The turbine (232) is sleeved on the lead screw (233). The lead screw (233) is movably mounted on the housing (10). The thrust seat (30) is movably mounted on the lead screw (233).

6. The automotive door self-closing lock transmission structure according to claim 5, characterized in that, The helix angle of the worm (231) is smaller than the equivalent friction angle between the worm (231) and the turbine (232).

7. The automotive door self-closing lock transmission structure according to claim 6, characterized in that, The thrust seat (30) is provided with a threaded hole (31) that is compatible with the lead screw (233). The thrust seat (30) is movably sleeved on the lead screw (233). The housing (10) is provided with a sliding groove (11). The thrust seat (30) is provided with a sliding boss (32) that is compatible with the sliding groove (11).

8. The automotive door self-closing lock transmission structure according to claim 7, characterized in that, The thrust seat (30) is provided with a trigger protrusion (33), and the housing (10) is provided with a micro switch (40).

9. The automotive door self-closing lock transmission structure according to claim 8, characterized in that, The thrust seat (30) is provided with a connecting protrusion (34), which is connected to the door lock.

10. A car door lock, characterized in that, The vehicle door self-closing transmission structure includes any one of claims 1 to 9.

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