A two-way movement automobile door lock mechanism

Abstract

The application relates to a bidirectional automobile door lock mechanism, a driving motor drives a worm to rotate, the worm drives a gear to rotate, the gear drives an electric unlocking release rod to rotate, and an arc surface is arranged on the electric unlocking release rod; the gear drives a first protrusion to rotate when rotating, the first protrusion pushes a driven wheel to rotate in a gap of the driven wheel, thereby driving a safety lever to rotate through a swing arm, and the safety lever drives a safety pull rod to move; the safety pull rod drives a coupling rod to rotate when moving, so that a third protruding column on the coupling rod is coincident with or staggered with the arc surface; the coincidence is for unlocking, and the staggering is for locking; in the unlocking state, the gear continuously rotates in the locking rotation direction, and then the locking and unlocking functions are sequentially completed; when the gear completes the locking function or simultaneously completes the locking and unlocking functions, the gear rotates in the opposite direction of the locking rotation direction, and the unlocking function is completed. The application can realize electric unlocking and electric locking and unlocking simultaneously, and space is saved.

Description

Technical Field

[0001] This invention relates to the field of automotive door locks, and in particular to a bidirectional automotive door lock mechanism. Background Technology

[0002] With the development of the automotive market, the requirements for automation and intelligence in automotive opening and closing systems are gradually increasing. Automation, lightweighting, and modularization of side doors are also gradually improving, and electric door opening and closing has become a standard feature of side door locks. In existing technologies, electric unlocking and electric locking are controlled by separate motors. Electric unlocking is a small system, and electric locking is a small system, resulting in complex structures, high costs, and large space requirements.

[0003] Therefore, it is necessary to provide a two-way moving car door lock mechanism that can simultaneously achieve electric unlocking and electric locking, while saving space. Summary of the Invention

[0004] The purpose of this invention is to provide a bidirectional car door lock mechanism that can simultaneously achieve electric unlocking and electric locking, while saving space.

[0005] To address the problems existing in the prior art, the present invention provides a bidirectional motion automotive door lock mechanism, comprising: an actuator housing, wherein the actuator housing is provided with a drive motor, a worm gear, a gear, a driven wheel, a first protrusion, an electric release rod, a gear return spring, a safety rod, a safety lever, a swing arm, a swing arm return spring, a coupling rod, a manual unlocking unit, and an electric lock body structure;

[0006] The drive motor drives the worm gear to rotate, the worm gear drives the gear to rotate, the gear drives the electrically operated release rod to rotate, and the electrically operated release rod is provided with an arc surface;

[0007] The passive wheel is a ring structure with a notch. The first protrusion slides in a circular track between the inner and outer circumferences of the ring structure. The first protrusion is always within the notch of the passive wheel.

[0008] When the gear rotates, it drives the first protrusion to rotate, and the first protrusion pushes the driven wheel to rotate within the notch;

[0009] The swing arm has a first end and a second end. The first end is fixed to a fixed shaft on the bumper, and the second end rotates around the fixed shaft. The second end is located in the notch or slides onto the annular structure of the driven wheel as the driven wheel rotates. During the process of the second end sliding onto the annular structure of the driven wheel, the swing arm contacts a limiting post on the bumper. As the second end slides completely onto the annular structure of the driven wheel, the limiting post drives the bumper to rotate around its axis.

[0010] The safety lever is T-shaped, and a first protrusion and a second protrusion are provided at the horizontal part of the T-shape of the safety lever; the first protrusion is located in the groove at the tail end of the safety lever, and the rotation direction of the groove at the tail end is opposite to the rotation direction of the limiting post, and the safety lever drives the safety lever to move;

[0011] The manual unlocking unit is rotatably mounted inside the actuator housing via a circular shaft, and the manual unlocking unit has a limiting groove and a fixing hole.

[0012] The coupling rod is rotatably installed in the fixing hole. The coupling rod has a locking hole and a third protrusion. The second protrusion is locked in the locking hole. When the safety lever moves, the coupling rod rotates around the fixing hole, so that the coupling rod is limited in the limiting groove or moves out of the limiting groove. It also makes the third protrusion coincide with or offset from the arc surface. When it coincides, the safety is released; when it is offset, the safety is engaged.

[0013] When the safety is off, the gear rotates continuously in the direction of the safety engagement, thus completing the safety engagement and unlocking functions in sequence. When the gear has completed the safety engagement function or simultaneously completed the safety engagement and unlocking functions, the gear rotates in the opposite direction of the safety engagement, thus completing the safety disengagement function.

[0014] Optionally, the bidirectional moving car door lock mechanism also includes an Ecc unit, which is an electrical unit, and the Ecc unit is installed inside the actuator housing;

[0015] The gear and the driven wheel are rotatably mounted on the Ecc unit.

[0016] Optionally, in the bidirectional moving car door lock mechanism, the driven wheel and the gear have the same rotation center axis, or the driven wheel and the gear have different rotation center axes, but the driven wheel and the gear's rotation axis coincide.

[0017] Optionally, in the bidirectional moving car door lock mechanism,

[0018] The gear return spring resets the gear after it has rotated and is no longer under force.

[0019] The swing arm return spring resets the swing arm when it is no longer under force after the swing arm rotates.

[0020] Optionally, in the bidirectional moving car door lock mechanism, the bumper has a first eccentric member, and the manual unlocking unit has a second eccentric member.

[0021] Optionally, in the bidirectional moving car door lock mechanism, the coupling rod has a coupling rod spring, which limits the coupling rod within the limiting groove.

[0022] Optionally, in the bidirectional moving car door lock mechanism, a gear buffer block is provided on the gear.

[0023] Optionally, in the bidirectional car door lock mechanism, after completing the locking function and gear reset, rotating the gear will, if the rotation direction is the same as the rotation direction when locking, electrically release and unlock the electric lock body structure through the electric release lever; if the rotation direction is opposite to the rotation direction when locking, the unlocking function is completed.

[0024] Optionally, in the bidirectional moving car door lock mechanism, the electric lock body structure includes a base plate, a ratchet, a cam fixedly connected to the ratchet, a ratchet rivet, a pawl, a pawl release rod fixedly connected to the pawl, a pawl rivet, and a lock body housing.

[0025] In the bidirectional motion car door lock mechanism provided by this invention, electric unlocking and electric locking are a single system that can simultaneously achieve electric unlocking and electric locking. Its performance is safe and reliable, and the car door lock mechanism of this invention has a simple and compact structure, low cost, and saves space. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the core structure of the automobile door lock mechanism provided in an embodiment of the present invention;

[0027] Figure 2 This is an overall schematic diagram of the car door lock mechanism provided in an embodiment of the present invention;

[0028] Figure 3-16 This is a partial schematic diagram of an automobile door lock mechanism provided in an embodiment of the present invention;

[0029] Figure 17-19 A diagram illustrating the locking process of a car door lock mechanism provided in an embodiment of the present invention;

[0030] Figure 20-21 This is a diagram illustrating the unlocking process of a car door lock mechanism provided in an embodiment of the present invention.

[0031] Figure 22-25 This is a diagram illustrating the unlocking process of a car door lock mechanism provided in an embodiment of the present invention.

[0032] Figure 26 This is a diagram showing the unlocked state of a car door lock mechanism provided in an embodiment of the present invention.

[0033] Figure 27 This is a diagram showing the safety status of a car door lock mechanism provided in an embodiment of the present invention.

[0034] Among them, 11-worm gear; 12-drive motor; 13-actuator housing; 131-spring foot limit buckle; 15-ECC unit; 21-gear; 211-first protrusion; 212-protrusion arc surface; 22-gear return spring; 23-passive wheel; 24-gear buffer block; 25-swing arm; 26-swing arm reset spring; 27-safety rod; 28-first eccentric component; 31-manual unlocking unit; 311-fixing hole; 312-limiting groove; 33-coupling rod; 331-third protrusion; 34-coupling rod spring; 38-round shaft; 39-second eccentric component; 41-safety pull rod; 411-first protrusion; 412-second drive mechanism drive point; 51-electric release rod; 511-arc surface; 110-counterclockwise direction; 120-clockwise direction. Detailed Implementation

[0035] The specific embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0036] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, 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 application.

[0037] With the development of the automotive market, the requirements for automation and intelligence in automotive opening and closing systems are gradually increasing. Automation, lightweighting, and modularization of side doors are also gradually improving, and electric door opening and closing has become a standard feature of side door locks. In existing technologies, electric unlocking and electric locking are controlled by separate motors. Electric unlocking is a small system, and electric locking is a small system, resulting in complex structures, high costs, and large space requirements.

[0038] To address the problems existing in the prior art, the present invention provides a bidirectional motion automotive door lock mechanism, such as... Figure 1-16As shown, the device includes: an actuator housing 13, within which are housed a drive motor 12, a worm gear 11, a gear 21, a driven wheel 23, a first protrusion 211, an electric release rod 51, a gear return spring 22, a safety rod 27, a safety lever 41, a swing arm 25, a swing arm return spring 26, a coupling rod 33, a manual unlocking unit 31, an electric lock body structure, and an ECC unit 15; wherein, the ECC unit 15 is an electrical unit, and the gear 21 and the driven wheel 23 are rotatably mounted on the ECC unit 15. The electric lock body structure includes a base plate, a ratchet, a cam fixedly connected to the ratchet, a ratchet rivet, a pawl, a pawl release rod fixedly connected to the pawl, a pawl rivet, and a lock body housing.

[0039] Preferably, the gear 21 is provided with a gear buffer block 24. The gear buffer block 24 can be made into an independent part and assembled on the gear 21. The mold is simple, but the inspection is difficult. Alternatively, it can be injection molded onto the gear 21 through secondary injection molding. The mold is complex, but the stability is high.

[0040] The gear return spring 22 resets the gear 21 after it rotates and is no longer under force; the swing arm return spring 26 resets the swing arm 25 after it rotates and is no longer under force. The safety bar 27 has a first eccentric member 28, and the manual unlocking unit 31 has a second eccentric member 39. The eccentric members are used to ensure that the structure can be in a stable state.

[0041] The drive motor 12 drives the worm gear 11 to rotate, the worm gear 11 drives the gear 21 to rotate, the gear 21 drives the electrically operated release rod 51 to rotate, and the electrically operated release rod 51 is provided with an arc surface 511;

[0042] The driven wheel 23 is an annular structure with a notch. The first protrusion 211 slides within a circular track between the inner and outer circumferences of the annular structure. The first protrusion 211 is always within the notch of the driven wheel 23. When the gear 21 rotates, it drives the first protrusion 211 to rotate, and the first protrusion 211 pushes the driven wheel 23 to rotate within the notch. Furthermore, the driven wheel 23 and the gear 21 share the same rotational axis, or the driven wheel 23 and the gear 21 share different rotational axes, but the driven wheel 23 coincides with the central axis of the gear 21's rotational shaft. Specifically, when the rotational axes are different, the installation method is as follows: a bushing is provided on the actuator housing 13, and the central axis of the bushing coincides with the central axis of the gear 21's rotational shaft. The driven wheel 23 is mounted on the bushing.

[0043] Preferably, the radius of the outer circumferential surface of the annular structure is equal to or slightly larger than the radius of the outer circumferential surface of the first protrusion 211, and the two sides of the first protrusion 211 are at symmetrical angles near the outer circumferential surface, so that the second end of the swing arm 25 can slide onto the outer circumferential surface of the first protrusion 211.

[0044] As shown in the figure Figure 5 and Figure 6 As shown, the gear return spring 22 is mounted on the actuator housing 13. The moving leg of the spring is limited at the spring foot limit buckle 131 and has an initial installation torque, which ensures the return of gear 21. Under the drive of the drive motor 12 and the worm gear 11, gear 21 rotates counterclockwise. The raised arc surface 212 of gear 21 pushes the gear return spring 22, and gear 21 is limited on the ECC unit 15. The energy stored in the gear return spring 22 reaches its maximum. At this time, the motor is de-energized, and the energy stored in the gear return spring 22 is released. The spring leg of the gear return spring 22 pushes the raised arc surface 212 of gear 21, pushing gear 21 back to its initial position. At this time, the spring leg of the gear return spring 22 is limited at the spring foot limit buckle 131 and maintains the initial installation torque.

[0045] The swing arm 25 has a first end and a second end. The first end is fixed to a fixed shaft on the bumper 27, and the second end rotates around the fixed shaft. The second end is located in the notch or slides onto the annular structure of the driven wheel 23 as the driven wheel 23 rotates. During the process of the second end sliding onto the annular structure of the driven wheel 23, the swing arm 25 contacts the limiting post on the bumper 27. As the second end slides completely onto the annular structure of the driven wheel 23, the limiting post drives the bumper 27 to rotate around its axis.

[0046] The safety lever 41 is T-shaped, and a first protrusion 411 and a second protrusion are provided at the horizontal part of the T-shape of the safety lever 41; the first protrusion 411 is located in the tail end groove of the safety lever 27, and the rotation direction of the tail end groove is opposite to the rotation direction of the limiting post. The safety lever 27 drives the safety lever 41 to move.

[0047] The manual unlocking unit 31 is rotatably mounted inside the actuator housing 13 via a circular shaft 38. The manual unlocking unit 31 has a limiting groove 312 and a fixing hole 311.

[0048] The coupling rod 33 is rotatably installed in the fixing hole 311. The coupling rod 33 has a locking hole and a third protrusion 331. The second protrusion is locked in the locking hole. When the safety pull rod 41 moves, the coupling rod 33 rotates around the fixing hole 311, so that the coupling rod 33 is limited in the limiting groove 312 or moves out of the limiting groove 312. It also makes the third protrusion 331 coincide with or offset from the arc surface 511. When it coincides, the safety is released; when it is offset, the safety is engaged.

[0049] When the safety is released, gear 21 rotates continuously in the direction of the safety rotation, thus completing the safety and unlocking functions in sequence; when gear 21 completes the safety function or completes both the safety and unlocking functions simultaneously, gear 21 rotates in the opposite direction of the safety rotation, thus completing the safety release function.

[0050] In one embodiment, the coupling rod 33 includes a coupling rod spring 34, which limits the coupling rod 33 within the limiting groove 312. If the coupling rod spring 34 is present, it limits the coupling rod 33 within the limiting groove 312. If the coupling rod spring 34 is absent, the second drive mechanism drive point 412 is driven to move the safety lever 41, thereby limiting the coupling rod 33 within the limiting groove 312.

[0051] refer to Figure 17-19 The safety mechanism 27 is activated as follows: the drive motor 12 drives the worm gear 11, which in turn drives the gear 21 to move counterclockwise 110; at the same time, the gear 21 drives the first protrusion 211 to rotate, thereby driving the driven wheel 23 to move; the driven wheel 23 pushes the swing arm 25 to move, and the swing arm 25 rotates around the fixed shaft on the safety rod 27. After a certain angle, it contacts the limiting post of the safety rod 27, further driving the safety rod 27 to move. The tail end groove of the safety rod 27 is connected to the first protrusion 411 on the safety lever 41, driving the safety lever 41 to move. The second protrusion on the safety lever 41 drives the coupling rod 33 to rotate around the fixed hole 311 of the manual unlocking unit 31, so that the third protrusion 331 of the coupling rod 33 is misaligned with the arc surface 511 of the electric release lever 51, thereby disconnecting the transmission connection between the manual unlocking unit 31 and the electric release lever 51, and realizing the function of activating the safety mechanism.

[0052] Continue to refer to Figure 20-21 At this point, the safety mechanism is in the locked position. Gear 21 continues to move counterclockwise 110, driving the electric release lever 51 to push the release mechanism of the electric lock body, unlocking the lock body. The mechanism has thus completed both locking and unlocking. Furthermore, because the arc surface on gear 21 and the arc surface of the electric release lever 51 have a certain gap in their initial positions (making... Figure 17-19(Both arc surfaces are not in contact at the beginning) Only when gear 21 rotates to a certain angle will the two arc surfaces come into contact, thereby causing the electric release lever 51 to start rotating and push the release mechanism of the electric lock body structure.

[0053] In one embodiment, after completing the locking function and resetting gear 21, gear 21 can be rotated. If its rotation direction is the same as the direction of rotation when locking (i.e., counterclockwise 110), the electric lock body structure can be electrically released and unlocked via the electric release lever 51. Specifically, the drive motor 12 of the car door lock mechanism drives gear 21 to move clockwise 120. At the same time, gear 21 drives the first protrusion 211 to rotate, thereby driving the driven wheel 23 to move. The swing arm 25 slides on the outer surface of the driven wheel 23. When gear 21 reaches the limit point, the motor stops energizing, and gear 21 returns to its initial state under the action of gear return spring 22. The first protrusion 211 also returns to its initial state. At this time, refer to Figure 24 The swing arm 25 is pressed against the notch end of the driven wheel 23, causing the swing arm 25 to contact the limiting post of the safety bar 27 and keeping the safety bar 27 in a fixed position. At this time, the locking function of the car door lock mechanism is restored, and the safety is still in the locked position. The car door lock mechanism is now ready for the next movement. If the gear 21 moves counterclockwise 110 at this time, the unlocking function is realized, and the safety state remains unchanged. If the rotation direction of the gear 21 is reversed from the rotation direction when the safety is engaged (i.e., clockwise 120), the unlocking function is completed.

[0054] Continue to refer to Figure 22-26 ,in, Figure 23 This is the limit position for electric reset (i.e., the state where the drive motor is energized); Figure 24 After the electric reset is de-energized (i.e., the drive motor is de-energized), the gear return spring 22 drives the gear 21 to reset to the initial position. Figure 25 In the middle, the drive motor 12 drives the gear 21 and gear buffer block 24 to move clockwise 120. The first protrusion 211 on the gear 21 will touch the inclined surface of the swing arm 25, driving the safety rod 27 to move. The tail end groove of the safety rod 27 is connected to the first protrusion 411 on the safety lever 41, driving the safety lever 41 to move. At the same time, the coupling rod 33 rotates around the fixing hole 311 of the manual unlocking unit 31 and is limited to the limiting groove 312 of the manual unlocking unit 31. The third protrusion 331 on the coupling rod 33 overlaps in space with the arc surface 511 of the electric release lever 51, thereby restoring the transmission connection between the manual unlocking unit 31 and the electric release lever 51, realizing the function of unlocking the safety. Figure 17 When the motor stops being powered on, gear 21 returns to its initial state under the action of gear return spring 22, and the first protrusion 211 also returns to its initial state. At this time, the car door lock mechanism has completed the unlocking process.

[0055] In summary, in the bidirectional motion car door lock mechanism provided by this invention, electric unlocking and electric locking are integrated into one system, which can simultaneously achieve electric unlocking and electric locking. Its performance is safe and reliable, and the car door lock mechanism of this invention has a simple and compact structure, low cost, and saves space.

[0056] The above are merely preferred embodiments of the present invention and do not constitute any limitation on the present invention. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and content disclosed in the present invention without departing from the scope of the present invention shall be deemed to have remained within the protection scope of the present invention.

Claims

1. A bidirectional motion automotive door lock mechanism, characterized in that, include: The actuator housing contains a drive motor, a worm gear, a gear, a driven wheel, a first protrusion, an electric release rod, a gear return spring, a safety rod, a safety lever, a swing arm, a swing arm return spring, a coupling rod, a manual unlocking unit, and an electric lock body structure. The drive motor drives the worm gear to rotate, the worm gear drives the gear to rotate, the gear drives the electrically operated release rod to rotate, and the electrically operated release rod is provided with an arc surface; The passive wheel is a ring structure with a notch. The first protrusion slides in a circular track between the inner and outer circumferences of the ring structure. The first protrusion is always within the notch of the passive wheel. When the gear rotates, it drives the first protrusion to rotate, and the first protrusion pushes the driven wheel to rotate within the notch; The swing arm has a first end and a second end. The first end is fixed to a fixed shaft on the bumper, and the second end rotates around the fixed shaft. The second end is located in the notch or slides onto the annular structure of the driven wheel as the driven wheel rotates. During the process of the second end sliding onto the annular structure of the driven wheel, the swing arm contacts a limiting post on the bumper. As the second end slides completely onto the annular structure of the driven wheel, the limiting post drives the bumper to rotate around its axis. The safety lever is T-shaped, and a first protrusion and a second protrusion are provided at the horizontal part of the T-shape of the safety lever; the first protrusion is located in the groove at the tail end of the safety lever, and the rotation direction of the groove at the tail end is opposite to the rotation direction of the limiting post, and the safety lever drives the safety lever to move; The manual unlocking unit is rotatably mounted inside the actuator housing via a circular shaft, and the manual unlocking unit has a limiting groove and a fixing hole. The coupling rod is rotatably installed in the fixing hole. The coupling rod has a locking hole and a third protrusion. The second protrusion is locked in the locking hole. When the safety lever moves, the coupling rod rotates around the fixing hole, so that the coupling rod is limited in the limiting groove or moves out of the limiting groove. It also makes the third protrusion coincide with or offset from the arc surface. When it coincides, the safety is released; when it is offset, the safety is engaged. When the safety is off, the gear rotates continuously in the direction of the safety engagement, thus completing the safety engagement and unlocking functions in sequence. When the gear has completed the safety engagement function or simultaneously completed the safety engagement and unlocking functions, the gear rotates in the opposite direction of the safety engagement, thus completing the safety disengagement function.

2. The bidirectional motion car door lock mechanism as described in claim 1, characterized in that, It also includes an Ecc unit, which is an electrical unit, and the Ecc unit is installed inside the actuator housing; The gear and the driven wheel are rotatably mounted on the Ecc unit.

3. The bidirectional motion car door lock mechanism as described in claim 1, characterized in that, The driven wheel has the same rotation center axis as the gear, or the driven wheel has a different rotation center axis than the gear, but the central axis of the driven wheel coincides with the rotation axis of the gear.

4. The bidirectional motion car door lock mechanism as described in claim 1, characterized in that, The gear return spring resets the gear after it has rotated and is no longer under force. The swing arm return spring resets the swing arm when it is no longer under force after the swing arm rotates.

5. The bidirectional motion car door lock mechanism as described in claim 1, characterized in that, The bumper has a first eccentric component, and the manual unlocking unit has a second eccentric component.

6. The bidirectional motion car door lock mechanism as described in claim 1, characterized in that, The coupling rod has a coupling rod spring, which limits the coupling rod to be within the limiting groove.

7. The bidirectional motion car door lock mechanism as described in claim 1, characterized in that, The gear is equipped with a gear buffer block.

8. The bidirectional motion automobile door lock mechanism as described in claim 1, characterized in that, After completing the locking and gear reset functions, rotate the gear. If the rotation direction is the same as when locking, the electric lock body will be electrically released and unlocked via the electric release lever. If the rotation direction is opposite to when locking, the unlocking function will be completed.

9. The bidirectional motion automobile door lock mechanism as described in claim 1, characterized in that, The electric lock body structure includes a base plate, a ratchet, a cam fixedly connected to the ratchet, a ratchet rivet, a pawl, a pawl release rod fixedly connected to the pawl, a pawl rivet, and a lock body housing.

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