CN110145189B

CN110145189B - Electric suction lock

Info

Publication number: CN110145189B
Application number: CN201910552744.7A
Authority: CN
Inventors: 潘微杰; 王强华
Original assignee: Ningbo Twirl Seiko Machinery Co ltd
Current assignee: Ningbo Twirl Seiko Machinery Co ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2025-02-18
Anticipated expiration: 2039-06-25
Also published as: CN110145189A

Abstract

An electric suction lock, characterized by comprising a housing, a driving mechanism, a lock tongue, a stopper and a shift fork. The housing has a content space, and a first lock port for a lock hook to be placed in the bottom is provided. The driving mechanism comprises a motor, a worm, a worm wheel and a gear set. The aforementioned worm is arranged at the power output end of the motor, and the aforementioned motor can rotate forward and reverse. One end of the aforementioned worm wheel meshes with the worm for transmission, and the other end is formed with a linkage gear, which meshes with the input end of the aforementioned gear set for transmission, and an output gear is provided at the output end of the aforementioned gear set. The coordinated cooperation of the shift fork, the stopper and the lock tongue is achieved through the gear set transmission combined with the bevel gear cooperation. The overall structure is compact and suitable for installation on various tailgates.

Description

Electric suction lock

Technical Field

The invention relates to a lockset, which is applied to an automobile tail door.

Background

In the using process of the traditional automobile tail door lock, the unlocking lever is pulled or pushed through the wire drawing or the connecting rod, the unlocking lever is used for poking a pawl in the tail door lock, the pawl is in click fit with the ratchet wheel release opening, and the lock catch can be released, so that the unlocking of the tail door lock is realized. The wire drawing drives the actuator to drive through an external power supply, and finally the actuator pushes the opening lever to rotate to unlock.

More tail door locks are disclosed in the prior art, such as an electric control automobile tail door lock body device (application publication number CN 103174342A) of China patent application number 201310067623.6, wherein a lock ring of the tail door pushes a ratchet wheel, the ratchet wheel rotates to a certain angle to be meshed with a ratchet wheel, a car door is locked, a console sends an unlocking signal to an unlocking motor, the unlocking motor pushes the ratchet wheel to push the ratchet wheel to rotate a certain angle to be disengaged from the ratchet wheel, the door lock is opened, and when an electric appliance fails to open the lock, a poking arm is manually operated to poke the ratchet wheel to disengage the ratchet wheel from the engaged position, so that the door lock is opened.

Similarly, reference may also be made to chinese invention patent No. ZL201110321905.5, automobile tail door lock (grant publication No. CN 102367715B), chinese invention patent application No. 201510599984.4, automobile tail door lock opening mechanism (application publication No. CN105113877 a), and the like.

The tail door lock has a complex structure, large overall volume and large installation space, and meanwhile, the tail door is closed only by meshing the ratchet wheel and the pawl, so that the problem that the tail door is difficult to completely close exists, and improvement is needed.

The Chinese patent application No. 201710948113.8 (electric suction lock) filed by patent application No. CN107558830A, which realizes the opening and closing of the lock by the back and forth movement of the rack, has longer integral shape and can not adapt to the installation of various vehicle tail doors.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the electric suction lock which has a compact structure and is suitable for various vehicles to install.

The invention solves the technical problems that the electric suction lock is characterized by comprising

The shell is provided with a content space, and a first locking opening for placing the locking hook is formed in the bottom of the shell;

The driving mechanism is arranged on the shell and comprises a motor, a worm wheel and a gear set, wherein the worm is arranged at the power output end of the motor, the motor can rotate positively and negatively, one end of the worm wheel is meshed with the worm for transmission, the other end of the worm wheel is provided with a linkage gear, the linkage gear is meshed with the input end of the gear set for transmission, and the output end of the gear set is provided with an output gear;

The lock tongue is rotatably arranged in the shell and is provided with a second locking notch, the second locking notch is matched with the first locking notch to realize complete locking, half locking and opening, and the lock tongue is provided with a first abutting part and a second abutting part adjacent to the first abutting part;

the first spring is arranged in the shell and is used for resetting the lock tongue;

the stop block is rotatably arranged in the shell and is provided with a first blocking part and a second blocking part;

a second spring provided in the housing for returning the stopper, and

A shifting fork which is rotatably arranged in the shell, one end of the shifting fork is provided with a first bevel gear which is meshed with the output gear for transmission, and the first bevel gear is obliquely arranged on the shifting fork;

the electric suction lock is in a complete locking state, and the second blocking part is propped against the second propping part to limit the rotation of the lock tongue;

in the half-locking state, the second blocking part is propped against the first propping part, and the shifting fork is positioned at the first position of the first blocking part;

when the electric suction lock is in an opened state, the shifting fork is in a second position of the first blocking part.

For realizing the automatic control of motor, be equipped with first micro-gap switch and the second micro-gap switch that all is connected with motor control in the casing, this first micro-gap switch has the first touch head that stretches out, this second micro-gap switch has the second touch head that stretches out, the spring bolt on the shaping have with the cooperation of aforementioned first touch head in order to realize motor forward pivoted first bump and with the cooperation of aforementioned second touch head in order to realize motor reverse pivoted second bump.

Further, the first bump and the second bump are integrated.

In consideration of the installation of the first micro-switch and the second micro-switch, the shell is internally provided with a bracket, the bracket is provided with a first accommodating groove, a second accommodating groove and an arc hole close to the first accommodating groove and the second accommodating groove, the first micro-switch is arranged in the first accommodating groove, a first touch head extends to the arc hole, the second micro-switch is arranged in the second accommodating groove, a second touch head extends to the arc hole, and the first salient point and the second salient point extend upwards out of the arc hole.

In an emergency, the stop block can be manually driven to release the blocking of the lock tongue, so that the electric suction lock is opened. Specifically, one of the following designs may be adopted:

First, the casing in be close to the output gear and be equipped with the third micro-gap switch who is connected with motor control, this third micro-gap switch has the third that stretches out to touch the head, correspondingly, protruding have with the aforesaid third touch the head cooperation with realize the bellying of shift fork return on the output gear, be equipped with the connecting portion that can urgent stay cord is connected on the dog.

The second type is that a third micro switch connected with the motor is arranged in the shell close to the output gear, the third micro switch is provided with a third contact head which extends out, correspondingly, a protruding part which is matched with the third contact head to realize the return of a shifting fork is protruding on the output gear, a shifting block which can act on a stop block is arranged in the shell, a shifting rod which extends out of the shell is arranged on the shifting block, and the stop block can be driven to rotate under the pulling state of the shifting rod so as to release the blocking of the lock tongue.

Preferably, the gear set includes a first duplex gear, a second duplex gear and an output gear, wherein one end of the first duplex gear is meshed with the linkage gear of the worm gear for transmission, one part of the output gear is cylindrical, the other part of the output gear is second bevel, the cylindrical gear is meshed with the second duplex gear, and the second bevel is meshed with the first bevel.

Further, the shell is provided with a first accommodating cavity and a second accommodating cavity, the worm wheel and the gear set are arranged in the first accommodating cavity, the lock tongue, the stop dog and the shifting fork are arranged in the second accommodating cavity, and the plane of the first accommodating cavity and the plane of the second accommodating cavity are intersected to form an obtuse angle.

Compared with the prior art, the invention has the advantages that the cooperation of the shifting fork, the stop block and the lock tongue is realized by combining gear set transmission with bevel gear cooperation, the whole structure is compact, and the invention is suitable for the installation on various tail gates.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1.

Fig. 2 is a side view of example 1.

Fig. 3 is a schematic structural view of fig. 1 with the first cover plate and the second cover plate removed.

Fig. 4 is a partially exploded view of fig. 3.

Fig. 5 is a schematic view of another view structure of the driving mechanism in fig. 4.

Fig. 6 is an enlarged combined view of the output gear, the third micro switch and the fork of fig. 5 from another view.

Fig. 7 is a state diagram when embodiment 1 is fully opened.

Fig. 8 is a diagram showing the half-lock state of embodiment 1.

Fig. 9 is a state diagram of the full lock of embodiment 1.

Fig. 10 is a schematic structural diagram of embodiment 2.

Fig. 11 is a schematic view of the structure of embodiment 2 with part of the components removed.

Detailed Description

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

In embodiment 1, as shown in fig. 1 to 6, the electric suction lock in this embodiment includes a housing 1, a driving mechanism, a lock tongue 5, a first spring 5a, a stopper 4, a second spring 4a, a fork 3, a bracket 7, a first micro switch 61, a second micro switch 62, and a third micro switch 63.

Referring to fig. 1 and 2, the housing 1 includes a first base 12, a second base 11, a first cover plate 13 and a third cover plate 14, where the first base 12 is assembled with the second base 11, the first cover plate 13 is disposed on a port of the first base 12 to form a first accommodating cavity 1a, the second cover plate 14 is disposed on the second base 11 to form a second accommodating cavity 2a, the second base 11 is provided with a first locking opening 15 into which a locking hook is placed, a worm wheel 22 and a gear set are disposed in the first accommodating cavity 1a, the locking tongue 5, a stop 4 and a fork 3 are disposed in the second accommodating cavity 2a, and a plane where the first accommodating cavity 1a is located intersects with a plane of the second accommodating cavity 2a to form an obtuse angle α, as shown in fig. 2.

As shown in fig. 5, the driving mechanism is arranged on the shell, the driving mechanism comprises a motor 2, a worm 21, a worm wheel 22 and a gear set, the worm 21 is arranged at the power output end of the motor 2, the motor 2 can rotate positively and negatively, one end of the worm wheel 22 is meshed with the worm 21 for transmission, the other end of the worm wheel 22 is provided with a linkage gear 221, the linkage gear 221 is meshed with the input end of the gear set for transmission, and the output end of the gear set is provided with an output gear 25.

The gear set comprises a first duplex gear 23, a second duplex gear 24 and an output gear 25, wherein one end of the first duplex gear 23 is meshed with the linkage gear of the worm gear 22 for transmission, one end of the output gear 25 is provided with a cylindrical tooth 251, the other end of the output gear 25 is provided with a second conical tooth 252, the cylindrical tooth 251 is meshed with the second duplex gear 24, and the second conical tooth 252 is meshed with the first conical tooth 32.

As shown in fig. 3 and 4, the lock tongue 5 is rotatably disposed in the housing 1 through a rotation shaft 5b, and is formed with a second locking opening 54, the second locking opening 54 cooperates with the first locking opening 15 to achieve complete locking, half locking and unlocking, the lock tongue 5 has a first abutting portion 52 and a second abutting portion 51 adjacent to the first abutting portion 52, and the first spring 5a is disposed in the second base 11 for resetting the lock tongue 5.

The stopper 4 is rotatably provided in the housing 1 via a rotation shaft 4b and has a first stopper 42 and a second stopper 41, and a second spring 4a is provided in the second base 11 for restoring the stopper 4.

The fork 3 is rotatably provided in the housing 1 through a rotation shaft 3b and has one end formed with a first bevel gear 32 engaged with the output gear 25, and the first bevel gear 32 is obliquely disposed on the fork 3.

A first micro switch 61, a second micro switch 62 and a third micro switch 63 which are all in control connection with the motor 2 are arranged in the shell 1, the first micro switch 61 is provided with a first contact head 611 which stretches out, the second micro switch 62 is provided with a second contact head 621 which stretches out, and a protruding block 53 which is matched with the first contact head 611 and the second contact head 621 to realize forward rotation and reverse rotation of the motor 2 is formed on the lock tongue 5.

As shown in fig. 3, a bracket 7 is disposed in the housing 1, a first accommodating groove 71, a second accommodating groove 72, and an arc hole 73 near the first accommodating groove 71 and the second accommodating groove 72 are disposed on the bracket 7, the first micro switch 61 is disposed in the first accommodating groove 71 and the first contact head 611 extends to the arc hole 73, the second micro switch 62 is disposed in the second accommodating groove 72 and the second contact head 621 extends to the arc hole 73, and the protruding block 53 extends upward to the arc hole 73. The rotation shaft 4b penetrates through the shaft hole 75 of the bracket 7, and the rotation shaft 5b penetrates through the shaft hole 74 of the bracket 7.

As shown in fig. 6, the third micro switch 63 is disposed near the output gear 25, the third micro switch 63 has a third contact pin 631 extending out, the output gear 25 is protruded with a protrusion 253 cooperating with the third contact pin 631 to realize the return of the shift fork 3, and the stop 4 is provided with a connection part capable of being connected with an emergency pull rope, in this embodiment, the connection part is a connection hole 43, referring to fig. 4.

As shown in fig. 7, when the electric suction lock is in the opened state, the fork 3 is in the second position 422 of the first blocking portion 42, and at this time, the bump 53 abuts against the first micro switch 61.

When the door is closed, the lock tongue 5 is pressed by the lock hook 100, the protruding block 53 is separated from the first micro switch 61, a signal is sent to the motor 2, the motor 2 starts to operate the shifting fork to shift towards the locking direction through a series of transmission, and meanwhile, the second micro switch 62 is also separated. As shown in fig. 8, in this case, the electric suction lock is in the half-lock state, the second blocking portion 41 abuts against the first abutting portion 52, and the fork 3 is in the first position 421 of the first blocking portion 42.

The shifting fork 3 continuously operates to shift the lock tongue 5, the lock tongue 5 stops operating when the protruding block 53 abuts against the second micro switch 62, as shown in fig. 9, the electric suction lock is in a completely locked state, the second blocking part 41 abuts against the second abutting part 51 to limit the rotation of the lock tongue 5, the protruding part 253 abuts against the third micro switch 63, the motor 2 drives the shifting fork 3 to return to the initial position, and at the moment, if an emergency situation is met, the emergency pulling rope can be pulled, so that the stop block 4 contacts with the limit of the lock tongue, and the electric suction lock is opened.

When the motor is unlocked, after receiving the signal, the motor drives the shifting fork 3 to shift in the unlocking direction, and the protruding part 253 is separated from the third micro switch 63. The spring bolt 5 is rebounded to the full open position by the first spring 5a until the bump 53 is pressed to the first micro switch 61, and the motor 2 stops running.

In embodiment 2, as shown in fig. 10 and 11, a dial 8 capable of acting on a stopper 4 is rotatably provided in a housing 1 in this embodiment through a shaft pin 82, and a dial rod 81 extending out of a through hole 141 of the housing is provided in the dial 8, and the through hole 141 is arc-shaped. When the deflector rod 81 is pulled, the stop block 4 can be driven to rotate so as to release the blocking of the lock tongue 3, and emergency unlocking is realized. Other structures refer to embodiment 1.

Claims

1. An electric suction lock is characterized by comprising

The shell (1) is provided with a content space, and a first locking opening (15) for placing the locking hook is formed in the bottom of the shell;

The driving mechanism is arranged on the shell (1) and comprises a motor (2), a worm (21), a worm wheel (22) and a gear set, wherein the worm (21) is arranged at the power output end of the motor (2), the motor (2) can rotate positively and negatively, one end of the worm wheel (22) is meshed with the worm (21) for transmission, the other end of the worm wheel is provided with a linkage gear (221), the linkage gear (221) is meshed with the input end of the gear set for transmission, and the output end of the gear set is provided with an output gear (25);

The lock tongue (5) is rotatably arranged in the shell (1) and is provided with a second locking opening (54), the second locking opening (54) is matched with the first locking opening (15) to realize complete locking, half locking and unlocking, and the lock tongue (5) is provided with a first abutting part (52) and a second abutting part (51) adjacent to the first abutting part (52);

A first spring (5 a) provided in the housing (1) for returning the tongue (5);

A stopper (4) rotatably provided in the housing (1) and having a first stopper portion (42) and a second stopper portion (41);

a second spring (4 a) provided in the housing (1) for returning the stopper (4), and

A shift fork (3) rotatably provided in the housing (1) and having a first bevel gear (32) formed at one end thereof for meshing with the output gear (25), the first bevel gear (32) being disposed obliquely to the shift fork (3);

In the electric suction lock in a completely locked state, the second blocking part (41) is propped against the second propping part (51) to limit the rotation of the lock tongue (5);

in the half-lock state, the second blocking part (41) is abutted against the first abutting part (52), and the shifting fork (3) is positioned at a first position (421) of the first blocking part (42);

when the electric suction lock is in an opened state, the shifting fork (3) is positioned at a second position (422) of the first blocking part (42);

The shell (1) is provided with a first accommodating cavity (1 a) and a second accommodating cavity (2 a), the worm wheel (22) and the gear set are arranged in the first accommodating cavity (1 a), the lock tongue (5), the stop block (4) and the shifting fork (3) are arranged in the second accommodating cavity (2 a), and the plane of the first accommodating cavity (1 a) and the plane of the second accommodating cavity (2 a) are intersected to form an obtuse angle;

The gear set comprises a first duplex gear (23), a second duplex gear (24) and an output gear (25), wherein one end of the first duplex gear (23) is in meshed transmission with the linkage gear of the worm gear (22), a cylindrical tooth (251) is formed at one end of the output gear (25), a second bevel tooth (252) is formed at the other end of the output gear, the cylindrical tooth (251) is meshed with the second duplex gear (24), and the second bevel tooth (252) is meshed with the first bevel tooth (32).

2. The electric suction lock as claimed in claim 1, wherein a first micro switch (61) and a second micro switch (62) are arranged in the housing (1) and are all in control connection with the motor (2), the first micro switch (61) is provided with a first protruding contact head (611), the second micro switch (62) is provided with a second protruding contact head (621), and the lock tongue (5) is provided with a first protruding point matched with the first contact head (611) to realize forward rotation of the motor (2) and a second protruding point matched with the second contact head (621) to realize reverse rotation of the motor (2).

3. The electric suction lock as claimed in claim 2, wherein the first bump and the second bump are formed as one piece.

4. The electric suction lock as claimed in claim 2, wherein a bracket (7) is provided in the housing (1), the bracket (7) is provided with a first accommodating groove (71), a second accommodating groove (72) and an arc hole (73) close to the first accommodating groove (71) and the second accommodating groove (72), the first micro switch (61) is provided in the first accommodating groove (71) and the first contact head (611) extends to the arc hole (73), the second micro switch (62) is provided in the second accommodating groove (72) and the second contact head (621) extends to the arc hole (73), and the first bump and the second bump extend upwards out of the arc hole (73).

5. The electric suction lock according to claim 1, characterized in that a third micro switch (63) in control connection with the motor (2) is arranged in the housing (1) near the output gear (25), the third micro switch (63) is provided with a third contact pin (631) which extends out, correspondingly, a protruding part (253) which is matched with the third contact pin (631) to realize the return of the shifting fork (3) is protruding on the output gear (25), and a connecting part which can be connected with an emergency pull rope is arranged on the stop block (4).

6. An electric suction lock according to claim 1, characterized in that a shifting block (8) capable of acting on the stop block (4) is arranged in the shell (1), a shifting rod (81) extending out of the shell is arranged on the shifting block (8), and the stop block (4) can be driven to rotate under the pulling state of the shifting rod (81) so as to release the limit of the lock tongue (3).