WO2018094853A1 - Electric self-attracting lock for trunk door of automobile - Google Patents

Abstract

An electric self-attracting lock for a trunk door of an automobile, comprising a shell (1a), a cover plate (2), a lock block (3), a first spring (61), an opening/closing block (5), a second spring (62), an electric actuating mechanism, and a shifting fork (4). The lock block (3) is rotatably provided in the shell (1a) and a second locking notch (32) is formed in the lock block; the lock block (3) has a first lever part (31); the opening/closing block (5) is rotatably provided in the shell (1a) and has a second lever part (51); the shifting fork (4) is rotatably provided in the shell (1a) and is connected with a power output end of the electric actuating mechanism; the shifting fork (4) is located between the first lever part (31) and the second lever part (51), and can separately drive the first lever part (31) and the second lever part (51) to rotate.

Description

Electric self-priming lock for car tailgate Technical field

The invention relates to a lock, in particular to an electric self-priming lock applied to a tailgate of a motor vehicle.

Background technique

In the process of using the traditional automobile tailgate lock, it is necessary to pull or push the opening lever through the wire drawing or the connecting rod, and the pawl in the tailgate lock is pushed by the opening lever, the pawl and the ratchet disengage the opening, and the tailgate locks. It can be pulled out, thereby unlocking the tailgate lock. The wire drawing is driven by an external power source to drive the actuator, and finally the actuator pushes the opening lever to rotate for unlocking work.

A number of such tailgate locks are disclosed in the prior art, such as the Chinese invention patent application No. 201310067623.6, "Electric Control Vehicle Tail Door Lock Body Device" (Application Publication No. CN103174342A), wherein the tailgate lock ring Pushing the ratchet, the ratchet rotates to a certain angle to engage the pawl, the door is locked; the console unlocks the signal to the unlocking motor, the unlocking motor pushes the pawl, the pawl rotates at a certain angle and the ratchet disengages the position, the door lock opens; when the appliance fails When the lock cannot be opened, the pawl is pulled by manually manipulating the toggle arm to disengage the pawl from the ratchet, thereby opening the door lock.

Similarly, the Chinese invention patent "Automotive tailgate lock" (authorization bulletin number CN 102367715B) with patent number ZL201110321905.5, application number 201510599984.4 Chinese invention patent application "automobile tailgate lock opening mechanism" (application publication number CN105113877A) can also be referred to. Wait.

The above-mentioned tailgate lock has a complicated structure, a large overall volume, and a relatively large space for installation. At the same time, the tailgate is closed only by the engagement of the ratchet and the pawl, and sometimes the tailgate is not completely closed, and the tailgate is completely closed. More difficult problems. Therefore, improvement is needed.

Summary of the invention

The technical problem to be solved by the present invention is to provide an electric self-priming lock for a vehicle tailgate that is compact and reliable in view of the above-mentioned state of the art.

Still another technical problem to be solved by the present invention is to provide an electric self-priming lock for a tailgate of a vehicle that can be manually opened in a special case.

The technical solution adopted by the present invention to solve the above technical problem is: an electric self-priming lock for a tailgate of a vehicle, characterized in that it comprises

Hollow housing

a cover plate disposed on the port of the foregoing housing and having a first locking port for the hook to be inserted;

a lock block rotatably disposed in the housing and having a second lock port, the lock block having a first lever portion;

a first spring disposed in the housing for resetting the lock block;

The opening and closing block is rotatably disposed in the housing and has a second lever portion;

a second spring disposed in the housing for resetting the opening and closing block;

An electric actuator disposed outside the casing, the electric actuator being provided with a sensor;

a shifting fork is rotatably disposed in the casing and connected to a power output end of the electric actuator, and the fork is located between the first lever portion and the second lever portion and can respectively drive the first lever portion And the second lever portion rotates.

Further, a first micro switch and a second micro switch each connected to the electric actuator are provided in the housing, and the first micro switch has an extended first contact, the second micro switch And a second bump that protrudes from the first contact and a second bump that cooperates with the second contact.

Preferably, the electric actuator comprises a motor and a speed reducer connected to the motor, and the motor is provided with a sensor, and the fork is connected to the power output end of the speed reducer. It does not require the use of complicated structures such as steel wires, and is compact and reasonable.

Preferably, the sensor is a magnetic ring rotating bi-directional Hall sensor.

The housing is provided with a through hole, and the second lever portion of the opening and closing block protrudes from the through hole and can move back and forth in the through hole. In this way, the person can drive the second lever portion of the opening and closing block in the vehicle compartment to realize manual opening of the tailgate.

Further, the lock block has a first abutting portion and a second abutting portion, and correspondingly, the opening and closing block has a third abutting portion, and the self-priming lock is in a semi-locked state, the foregoing The three abutting portions are opposite to the first abutting portion to restrict the rotation of the lock block; when the self-priming lock is in the fully locked state, the third abutting portion and the first abutting portion can restrain the lock block from continuing to rotate.

Compared with the prior art, the invention has the advantages that the lock block and the opening and closing block are driven by the fork, and the electric actuator realizes unlocking and locking, the overall structure is compact and reasonable, the space is small, and the cost is also reduced, and at the same time It can be replaced with different models to facilitate the promotion.

DRAWINGS

FIG. 1 is a schematic structural view of an embodiment of the present invention.

Figure 2 is an exploded assembly view of Figure 1.

3 is a schematic enlarged view of the lock block of FIG. 2 from another perspective.

4 is a schematic enlarged view of another opening and closing block of FIG. 2 .

Figure 5 is a rear elevational view of the housing of Figure 2.

Figure 6 is a schematic view showing the structure of the self-priming lock when the tailgate is completely closed.

Figure 7 is a schematic view showing the structure of the self-priming lock when the tailgate is opened.

Figure 8 is a schematic view showing the structure of the self-priming lock when the tailgate is fully opened.

Figure 9 is a schematic view showing the structure of the self-priming lock when the tailgate is half closed.

detailed description

The invention will be further described in detail below with reference to the embodiments of the drawings.

As shown in FIG. 1 and FIG. 2, the electric self-priming lock for the tailgate of the automobile in the embodiment includes a casing 1a, a cover plate 2, a lock block 3, a first spring 61, an opening and closing block 5, and a second The spring 62, the first micro switch 7, the second micro switch 8, the motor 1 and the speed reducer 11.

The housing 1a has a hollow structure. As shown in FIG. 5, a through hole 11a is formed on one side of the housing 1a, and the cover 2 is disposed on the port of the housing 1a and has a first for the lock 10 of the tailgate of the automobile. Locking port 21.

As shown in FIG. 3, the lock block 3 is rotatably disposed in the housing 1a and is formed with a second lock 32 having a first lever portion 31, a first abutting portion 34 and a second abutment. In the portion 37, the first bump 35 and the second bump 36 are formed on the lock block 3. The first spring 61 is provided in the housing 1a for resetting the lock block 3.

As shown in FIG. 4, the opening and closing block 5 is rotatably disposed in the housing 1a and has a second lever portion 51 and a third abutting portion 52. The second lever portion 51 extends out of the through hole 11a of the housing 1a. And it can move back and forth in the through hole 11a. The second spring 62 is provided in the housing 1a for resetting the opening and closing block 5.

The motor 1 and the speed reducer 11 constitute an electric actuator, the motor 1 and the speed reducer 11 are disposed outside the casing 1a, the speed reducer 11 is connected to the motor 1, and the motor 1 is provided with a sensor 12. The sensor 12 can use a magnetic ring rotating bi-directional Hall sensor for detecting the running condition of the motor 1. Specifically, the motor 1 rotates one revolution and the Hall emits three or seven (1 to 12) pulse signals, and two Hall elements. Two signals are output, and the two pulse signals are made into a quarter phase difference (90 degree phase difference), thereby calculating the number of digital pulses up or down and the rotational speed of the motor 1 to reflect the operating condition and operating position of the device.

The shift fork 4 is rotatably disposed in the housing 1a and connected to the power output end of the speed reducer 11. The shift fork 4 is located between the first shift lever portion 31 and the second shift lever portion 51 and can respectively drive the first dial The lever portion 31 and the second lever portion 51 rotate.

The first micro switch 7 and the second micro switch 8 are disposed in the housing 1a and are both connected to the motor 1, the first micro switch 7 has an extended first contact 71, and the second micro switch 8 has The protruding second contact 81, the first contact 71 can cooperate with the first bump 35, and the second bump 36 can cooperate with the second contact 81.

When the self-priming lock is in the half-locked state, the first abutting portion 34 and the third abutting portion 52 can restrain the lock block 3 from continuing to rotate; when the self-priming lock is in the fully locked state, the second abutting portion 37 and the third abutting portion The abutment 52 can limit the rotation of the lock block 3 to continue.

As shown in FIG. 6, the tailgate is closed, and the opening and closing block 5 is rotated counterclockwise by the second spring 62. At this time, the third abutting portion 52 of the opening and closing block 5 catches the second abutting portion 37 of the lock block 3. The lock block 3 is in the locked state. At this time, the lock 10 of the tailgate of the automobile is caught in the first lock 21 of the cover 2 and the second lock 32 of the lock block 3, and the second bump 36 is pressed against the second The second touch head 81 of the second micro switch 8 is closed, and the motor drive shift fork is moved to the original position.

As shown in Fig. 7, the door opening process: pressing the tailgate switch or pressing the remote control tailgate button, the motor 1 drives the fork to rotate clockwise, and the fork 4 acts on the second lever portion 51 of the opening and closing block 5 to open and close. Block 5 rotates clockwise, then open and close block 5 The third abutting portion 52 is separated from the second abutting portion 37 of the lock block 3, the lock block 3 is rotated by the first spring 61, starts to open, the electric strut is opened, the tailgate is slowly opened, and the motor 1 is simultaneously Drive the fork counterclockwise to return to the original position.

As shown in FIG. 8, the tailgate is fully opened, and the opening and closing block 5 is rotated counterclockwise by the second spring 62. At this time, the first bump 35 and the first micro switch 7 are not in contact, and the second bump 36 is not in contact with the second micro switch 8. The fork is in place.

As shown in FIG. 9, the door closing process: pressing the tailgate switch or pressing the remote control to open the tail button, the electric strut is moved downward, and the lock 10 of the tailgate hits the lock block 3, so that the lock block 3 rotates counterclockwise. The first lever portion of the lock block 3 is rotated to the first gear state, the first bump 35 of the lock block 3 is in contact with the first touch head 71 of the first micro switch 7, and the first micro switch 7 is closed. The motor 1 is signaled, and the motor 1 drives the fork to continue to rotate counterclockwise. The second bump 36 is in contact with the second contact 81 of the second micro switch 8, the second micro switch 8 is closed, and the motor 1 drives the fork to return to the home position clockwise. At the same time, the second lever portion 51 of the opening and closing block 5 is rotated by the second spring 62 to rotate counterclockwise, and the third abutting portion 52 of the opening and closing block 5 is caught by the first abutting portion 34 of the lock block 3.

In the manual operation, the second lever portion 51 of the opening and closing block 5 is rotated in the clockwise direction, and the lock block 3 is disengaged from the locking block 5, and is unlocked by the first spring 61.

Here, the first micro switch off signal informs the motor to drive the shift fork, and the second micro switch close signal informs the motor drive fork to return to the original position, and is the in-position signal that the lock block has been closed.

Claims (6)

An electric self-priming lock for a tailgate of a vehicle, characterized by comprising Hollow housing (1a); a cover plate (2), disposed on the port of the casing (1a) and having a first locking port (21) for the lock (10) of the tailgate of the automobile; The lock block (3) is rotatably disposed in the casing (1a) and is formed with a second lock port (32) having a first lever portion (31); a first spring (61) disposed in the housing (1a) for resetting the lock block (3); The opening and closing block (5) is rotatably disposed in the casing (1a) and has a second lever portion (51); a second spring (62) disposed in the housing (1a) for resetting the opening and closing block (5); An electric actuator is disposed outside the casing (1a), and the electric actuator is provided with a sensor (12): a shift fork (4) rotatably disposed in the casing (1a) and connected to a power output end of the electric actuator, the fork (4) being located at the first lever portion (31) and the second dial The first lever portion (31) and the second lever portion (51) are respectively rotatable between the lever portions (51). The electric self-priming lock according to claim 1, characterized in that the housing (1a) is provided with a first micro switch (7) and a second micro switch (8) each connected to the electric actuator. The first micro switch (7) has an extended first contact head (71), and the second micro switch (8) has an extended second contact head (81), the lock block (3) A first bump (35) that cooperates with the first first contact (71) and a second bump (36) that cooperates with the second contact (81) are formed. The electric self-priming lock according to claim 1, wherein the electric actuator comprises a motor (1) and a speed reducer (11) connected to the motor (1), wherein the motor (1) is provided The sensor (12) is connected to the power output of the speed reducer (11). The electric self-priming lock according to claim 1 or 3, characterized in that said sensor (12) is a magnetic ring rotating bidirectional Hall sensor. The electric self-priming lock according to claim 1, characterized in that the casing (1a) is provided with a through hole (11a), and the second lever portion (51) of the opening and closing block (5) is extended The through hole (11a) is movable back and forth within the through hole (11a). The electric self-priming lock according to claim 1, characterized in that the lock block (3) has a first abutting portion (34) and a second abutting portion (37), correspondingly, the opening and closing The block (5) has a third abutting portion (52), and the self-suction lock is in a half-locked state, and the aforementioned third abutting portion (52) is opposite to the first abutting portion (34) to limit the lock block (3) The rotation is continued; the self-suction lock is in the fully locked state, and the aforementioned third abutting portion (52) is opposite to the first abutting portion (34) to restrict the lock block (3) from continuing to rotate.

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