Door lock locking piece driving device, door lock and vehicle

Abstract

The utility model belongs to the technical field of automobile door locks, and discloses a door lock locking piece driving device, a door lock and a vehicle, the door lock locking piece driving device comprises a motor, a microswitch and a transmission mechanism, the microswitch is connected with the motor in parallel, and the microswitch is configured to enable the motor to be short-circuited and braked when being closed; the output end of the motor is in transmission connection with the input end of the transmission mechanism, and the output end of the transmission mechanism is provided with a locking position enabling the locking piece to lock the spring bolt and an unlocking position enabling the locking piece to unlock the spring bolt. The output end of the transmission mechanism is connected with an extrusion part, and when the output end of the transmission mechanism is located at the locking position, the extrusion part can act on the microswitch, so that the microswitch can be in a closed state. According to the door lock locking piece driving device, the door lock and the vehicle, the braking efficiency is high, the braking performance of the lock body is improved, and the safety coefficient is increased.

Description

Door lock locking mechanism, door lock and vehicle Technical Field

[0001] This utility model relates to the field of automotive door lock technology, and in particular to a door lock locking component drive device, a door lock, and a vehicle. Background Technology

[0002] The braking structure of automotive door locks, especially the motor braking mechanism, is crucial for ensuring that car door locks can respond quickly and lock the doors in emergencies. In existing technologies, most automotive door lock motor braking methods rely on a short-circuit of the logic power supply to the Electronic Control Unit (ECU). An angle sensor detects changes in the motor's rotation angle, and the sensor transmits the detection result to the ECU. The ECU determines whether the motor's rotation angle has reached the locking position angle. Once the locking position angle is reached, the ECU sends a braking command signal to the motor, and the motor begins to brake. However, the communication delay between the ECU receiving the sensor signal and the motor executing the braking command from the ECU directly affects the door lock's braking performance and poses certain safety hazards. Summary of the Invention

[0003] The purpose of this utility model is to provide a door lock locking component driving device and a door lock, which can reduce communication delay, improve door lock braking performance, and increase the safety factor.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A door lock locking element driving device, characterized in that it comprises:

[0006] Electric motor;

[0007] A microswitch is connected in parallel with the motor, and the microswitch is configured to short-circuit and brake the motor when closed;

[0008] The transmission mechanism has the output end of the motor connected to the input end of the transmission mechanism. The output end of the transmission mechanism has a locking position for locking the locking member to lock the bolt and an unlocking position for unlocking the locking member to unlock the bolt. The output end of the transmission mechanism is connected to a pressing part. When the output end of the transmission mechanism is in the locking position, the pressing part can act on the micro switch to make the micro switch closed.

[0009] Optionally, the transmission mechanism includes:

[0010] A worm gear, which is fixedly connected to the output end of the motor;

[0011] A worm gear, which meshes with the worm, and the worm gear is provided with a pressing part;

[0012] The worm gear can rotate circumferentially around its own central axis, so that the extrusion part can selectively extrude the moving contact of the micro switch to switch the micro switch to the closed state, or separate from the moving contact of the micro switch to switch the micro switch to the open state.

[0013] Optionally, the worm gear and the extrusion section are integrally formed structural components.

[0014] Optionally, the pressing part and the micro switch are located at the same axial end of the worm gear.

[0015] Optionally, the extrusion part has an extrusion surface, and the distance between the extrusion surface and the central axis of the worm wheel gradually decreases along the rotation direction of the worm wheel that moves the locking member from the unlocked position to the locked position.

[0016] Optionally, the extrusion surface is a plane or a curved surface.

[0017] Optionally, the worm gear is an incompletely toothed worm gear.

[0018] Optionally, the motor includes a forward armature current winding and a reverse armature current winding. The forward armature current winding is used to connect a forward current to make the output terminal of the motor rotate in the forward direction, and the reverse armature current winding is used to connect a reverse current to make the output terminal of the motor rotate in the reverse direction.

[0019] One terminal of the micro switch is connected to one end of the reverse armature current winding, and the other terminal is connected to the other end of the reverse armature current winding.

[0020] A door lock includes a locking element, a bolt, and a driving device for the locking element. The output end of the transmission mechanism is connected to the locking element. When the locking element is in the locked position, it can lock the bolt. When the locking element is in the unlocked position, the locking element and the bolt are separated, allowing the bolt to be unlocked.

[0021] A vehicle, including a door frame, a door movably mounted on the door frame, and a door lock for locking or unlocking the door and the door frame.

[0022] The beneficial effects of this utility model are:

[0023] This utility model discloses a door lock locking component driving device, a door lock, and a vehicle. During the process of the motor driving the locking component through a transmission mechanism, the output end of the transmission mechanism drives the pressing part to move. This achieves the locking component locking the door lock's bolt while the pressing part acts on a micro switch, causing the micro switch to switch from an open state to a closed state. The micro switch short-circuits the motor, thus braking it. This mechanical braking eliminates the need for sensors or other structural components, reducing communication delays caused by signal transmission and response times. It also offers high braking efficiency and improved safety. Furthermore, after the motor brakes, the locking component remains in its current position, locking the bolt and thus braking the door lock. Attached Figure Description

[0024] Figure 1 is a schematic diagram of the door lock locking element driving device provided in an embodiment of the present invention.

[0025] In the diagram: 1. Motor; 2. Microswitch; 21. Moving contact; 3. Worm gear; 4. Worm wheel; 5. Extrusion section. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] As shown in Figure 1, an embodiment of this utility model provides a door lock locking member driving device, including a motor 1, a micro switch 2, and a transmission mechanism. The micro switch 2 and the motor 1 are connected in parallel. The micro switch 2 is configured to short-circuit and brake the motor 1 when closed. The output end of the motor 1 is connected to the input end of the transmission mechanism. The output end of the transmission mechanism has a locking position for locking the latch and an unlocking position for unlocking the latch. The output end of the transmission mechanism is connected to a pressing part 5. When the output end of the transmission mechanism is in the locking position, the pressing part 5 can act on the micro switch 2, so that the micro switch 2 can be in a closed state.

[0031] During the process of motor 1 driving the locking element through the transmission mechanism, the output end of the transmission mechanism drives the pressing part 5 to act, so that the locking element locks the door lock tongue. At the same time, the pressing part 5 acts on the micro switch 2, causing the micro switch 2 to switch from the open state to the closed state. The micro switch 2 short-circuits the motor 1, thus braking the motor 1. This achieves braking of the motor 1 mechanically, eliminating the need for structural components such as sensors. It can reduce communication delays caused by signal transmission time and response time, resulting in high braking efficiency and improved safety. Moreover, after the motor 1 is braked, the locking element will remain in its current position, locking the door lock tongue and achieving braking of the door lock.

[0032] It should be noted that at the instant the micro switch 2 closes and short-circuits the two ends of the motor 1, the current of the motor 1 will increase rapidly in a short time, causing the rotor of the motor 1 to stop rotating quickly, thus achieving short-circuit braking of the motor 1. Short-circuit braking of the motor 1 is existing technology in this field and is not the protection point of this solution, so it will not be described in detail here.

[0033] Furthermore, the transmission mechanism includes a worm 3 and a worm wheel 4. The worm 3 is fixedly connected to the output end of the motor 1, and the worm wheel 4 meshes with the worm 3. The worm wheel 4 is provided with a pressing part 5. The worm wheel 4 can rotate circumferentially around its own central axis, so that the pressing part 5 can selectively press the moving contact 21 of the micro switch 2 to switch the micro switch 2 to the closed state, or separate from the moving contact 21 of the micro switch 2 to switch the micro switch 2 to the open state.

[0034] Motor 1 drives worm 3 to rotate, worm 3 drives worm wheel 4 to rotate, worm wheel 4 drives extrusion part 5 to rotate, and extrusion part 5 extrudes the moving contact 21 of micro switch 2. When micro switch 2 is in the closed state, motor 1 is short-circuited by micro switch 2, realizing the braking of motor 1. When extrusion part 5 separates from moving contact 21 of micro switch 2, micro switch 2 is in the open state, and motor 1 runs normally.

[0035] In other embodiments, the transmission structure may also employ a gear and a rack. The gear is fixedly connected to the output end of the motor 1, and the rack meshes with the gear. The rack is provided with a pressing part 5, and the rack can move along its own length direction so that the pressing part 5 can selectively press the moving contact 21 of the micro switch 2 to switch the micro switch 2 to the closed state, or separate from the moving contact 21 of the micro switch 2 to switch the micro switch 2 to the open state.

[0036] For example, the extrusion part 5 is a protruding structure.

[0037] It should be noted that the transmission structure and the locking component are connected by a transmission component, which is existing technology and will not be described in detail here.

[0038] Furthermore, the worm gear 4 and the extrusion section 5 are integrally formed structural components, which facilitates production and processing.

[0039] Furthermore, as shown in Figure 1, the extrusion part 5 and the micro switch 2 are located at the same end of the worm gear 4, and the worm 3 and the micro switch 2 are located on the same radial side of the worm gear 4, which can reduce the space occupied along the radial direction of the worm gear 4.

[0040] Furthermore, the extrusion section 5 is provided with an extrusion surface, and the distance between the extrusion surface and the axis of the worm gear 4 gradually decreases along the extrusion direction of the extrusion section 5. During the rotation of the worm gear 4, the extrusion surface of the extrusion section 5 can directly abut against the moving contact 21 to keep the micro switch 2 in a closed state. The micro switch 2 has a fast response time for closing, which improves the braking efficiency of the motor 1.

[0041] For example, the extrusion surface is a plane. In other embodiments, the extrusion surface may also be a curved surface.

[0042] Furthermore, worm gear 4 is an incomplete tooth worm gear, which reduces material costs.

[0043] For example, the worm gear 4 adopts a sector-shaped worm gear structure, which can reduce the space occupied by the worm gear 4.

[0044] Furthermore, the motor 1 includes a forward armature current winding and a reverse armature current winding. The forward armature current winding is used to connect the forward current so that the output terminal of the motor 1 rotates in the forward direction, and the reverse armature current winding is used to connect the reverse current so that the output terminal of the motor 1 rotates in the reverse direction. When the motor 1 is connected to the forward current, the micro switch 2 is always in the open state; when the motor 1 is connected to the reverse current, the micro switch 2 can pass the reverse current. One terminal of the micro switch 2 is connected to one end of the reverse armature current winding, and the other terminal is connected to the other end of the reverse armature current winding.

[0045] When the power supply provides forward current to motor 1, micro switch 2 is always in the open state. The forward current only passes through the forward armature current winding of motor 1, allowing the output terminal of motor 1 to rotate forward, driving worm 3 to rotate forward. Worm 3 drives worm wheel 4 to rotate, and worm wheel 4 drives the locking element to switch from the locked position to the unlocked position. The pressing part 5 on worm wheel 4 separates from the moving contact 21 of micro switch 2. When worm wheel 4 drives the locking element to switch to the unlocked position, the locking element can unlock the latch. When the power supply provides reverse current to motor 1, the reverse current... Through the reverse armature current winding of motor 1, the output end of motor 1 can rotate in the reverse direction, driving worm 3 to rotate in the reverse direction. Worm 3 drives worm wheel 4 to rotate, and worm wheel 4 drives the locking element to switch from the unlocked position to the locked position. When worm wheel 4 drives the locking element to switch to the locked position, the pressing part 5 on worm wheel 4 presses the moving contact 21 of micro switch 2, and micro switch 2 is in the closed state. Motor 1 is short-circuited by micro switch 2, thereby realizing the braking of motor 1. The locking element is kept in the current position and can lock the bolt, thereby realizing the braking of the door lock.

[0046] Optionally, the moving contact 21 is a spring structure. The spring structure can automatically reset. After the pressing part 5 separates from the spring structure, the pressing force acting on the spring structure disappears, and the spring structure can reset and remain in the open state.

[0047] Preferably, the micro switch 2 is a normally open micro switch. It should be noted that normally open micro switches, which can only accept reverse current, are existing technology and will not be discussed further here.

[0048] This utility model provides a door lock, including a locking element, a bolt, and a door lock locking element driving device. The output end of the transmission mechanism is connected to the locking element. When the locking element is in the locked position, it can lock the bolt. When the locking element is in the unlocked position, it separates from the bolt and unlocks the bolt. The motor 1 drives the transmission structure to actuate, causing the pressing part 5 to act on the micro switch 2. The micro switch 2 closes, short-circuiting and braking the motor 1. This achieves both mechanical braking of the motor 1 and locking of the door lock bolt, resulting in high braking efficiency and improved safety.

[0049] An embodiment of this utility model provides a vehicle, including a door frame, a door movably mounted on the door frame, and the aforementioned door lock, which is used to lock or unlock the door and the door frame.

[0050] The door lock structure enables locking and unlocking of the car door. When the worm gear 4 drives the locking component to switch to the locked position, the worm gear 4 locks the bolt through the locking component, and the bolt locks the car door. When the worm gear 4 drives the locking component to switch to the unlock position, the worm gear 4 unlocks the bolt through the locking component, and thus unlocks the car door.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A door lock locking element driving device, characterized in that, include: Motor (1); micro switch (2), the micro switch (2) and the motor (1) are connected in parallel, the micro switch (2) is configured to short-circuit and brake the motor (1) when closed; transmission mechanism, the output end of the motor (1) is connected to the input end of the transmission mechanism, the output end of the transmission mechanism has a locking position for locking the locking member to lock the latch and an unlocking position for unlocking the locking member to unlock the latch; the output end of the transmission mechanism is connected to a pressing part (5), when the output end of the transmission mechanism is in the locking position, the pressing part (5) can act on the micro switch (2) so that the micro switch (2) can be in a closed state.

2. The door lock locking element driving device according to claim 1, characterized in that, The transmission mechanism includes: a worm (3), which is fixedly connected to the output end of the motor (1); a worm wheel (4), which meshes with the worm (3), and the worm wheel (4) is provided with a pressing part (5); the worm wheel (4) can rotate circumferentially around its own central axis, so that the pressing part (5) can selectively press the moving contact (21) of the micro switch (2) to switch the micro switch (2) to the closed state, or separate from the moving contact (21) of the micro switch (2) to switch the micro switch (2) to the open state.

3. The door lock locking element driving device according to claim 2, characterized in that, The worm gear (4) and the extrusion part (5) are integrally formed structural components.

4. The door lock locking element driving device according to claim 2, characterized in that, The extrusion part (5) and the micro switch (2) are located at the same axial end of the worm gear (4).

5. The door lock locking element driving device according to claim 2, characterized in that, The extrusion part (5) has an extrusion surface, and the distance between the extrusion surface and the central axis of the worm wheel (4) gradually decreases along the rotation direction of the worm wheel (4) that moves the locking member from the unlocked position to the locked position.

6. The door lock locking element driving device according to claim 5, characterized in that, The extrusion surface can be a plane or a curved surface.

7. The door lock locking element driving device according to claim 2, characterized in that, The worm gear (4) is an incomplete tooth worm gear.

8. The door lock locking element driving device according to any one of claims 1 to 7, characterized in that, The motor (1) includes a forward armature current winding and a reverse armature current winding. The forward armature current winding is used to connect the forward current so that the output terminal of the motor (1) rotates in the forward direction. The reverse armature current winding is used to connect the reverse current so that the output terminal of the motor (1) rotates in the reverse direction. One terminal of the micro switch (2) is connected to one end of the reverse armature current winding, and the other terminal is connected to the other end of the reverse armature current winding.

9. A door lock, characterized in that, The lock includes a locking element, a latch, and a door lock locking element driving device as described in any one of claims 1-8. The output end of the transmission mechanism is connected to the locking element. When the locking element is in the locked position, the locking element can lock the latch. When the locking element is in the unlocked position, the locking element and the latch are separated, and the latch can be unlocked.

10. A vehicle, characterized in that, The device includes a door frame, a door movably mounted on the door frame, and a door lock as described in claim 9, the door lock being used to lock or unlock the door and the door frame.

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