CN112252863A

CN112252863A - Electric suction lock for vehicle tail door

Info

Publication number: CN112252863A
Application number: CN202011245902.3A
Authority: CN
Inventors: 潘微杰
Original assignee: Ningbo Twirl Seiko Machinery Co ltd
Current assignee: Ningbo Twirl Seiko Machinery Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-01-22

Abstract

An electric suction lock for a vehicle tail door is characterized by comprising a lock shell, a driving mechanism, a lock tongue, a ratchet plate, a shifting block, a shifting lever and a limiting plate, wherein the shifting block can be rotatably arranged on the shifting fork and can move along with the shifting fork; the inner end of the deflector rod can be rotatably arranged in the lock shell and forms a transmission part, and the outer end of the deflector rod extends out of the lock shell to form an operation part; the middle part of the limit plate can be rotatably arranged in the lock shell, one end of the limit plate can be in limit fit with the shifting block, and the other end of the limit plate is movably connected with the shifting rod through a connecting rod. When the lock is unlocked by means of operation, the shifting lever pushes the shifting fork to shift the ratchet plate to release the effect on the lock tongue, and meanwhile, the limiting plate is pushed through the connecting rod to release the limiting of the shifting block, the shifting block returns to the original position to release the effect on the lock tongue, so that the lock tongue can be manually and emergently unlocked at any position, and the safety is ensured.

Description

Electric suction lock for vehicle tail door

Technical Field

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

Background

When the traditional automobile tail door lock is used, the opening lever needs to be pulled or pushed through a wire drawing or a connecting rod, the opening lever stirs a pawl in the tail door lock, the pawl is in striking fit with a ratchet wheel disengaging opening, and a lock catch can be disengaged, so that the tail door lock is unlocked. 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.

Many tail door locks are disclosed in the prior art, for example, chinese patent application No. 201310067623.6, entitled "electrically controlled car tail door lock body device" (application publication No. CN103174342A), in which a lock catch ring of the tail door pushes a ratchet wheel, the ratchet wheel rotates to a certain angle to engage with a pawl, and a car door is locked; the console sends an unlocking signal to the unlocking motor, the unlocking motor pushes the pawl, the pawl rotates by a certain angle to be separated from the engagement position with the ratchet wheel, and the door lock is opened; when the electric appliance fails and the lock cannot be opened, the poking arm is manually operated to poke the pawl, so that the pawl is separated from the ratchet wheel at the meshing position, and the door lock is opened.

Similarly, the inventor also refers to the chinese patent of patent No. ZL201110321905.5, automobile rear door lock (grant publication No. CN 102367715B), application No. 201510599984.4, and the chinese patent application of automobile rear door lock opening mechanism (application publication No. CN 105113877A).

The tail door lock is complex in structure, large in overall size and occupied in space, meanwhile, the tail door is closed only through the engagement of the ratchet wheel and the pawl, the problem that the tail door is difficult to close completely exists, and therefore improvement is needed.

The Chinese patent application with application number 201710948113.8, namely 'electric suction lock' (application publication number CN107558830A), realizes the opening and closing of the lock by the back and forth movement of a rack, is long in integral shape and cannot adapt to the installation of various vehicle tail doors.

As an improvement, the applicant discloses a new electric suction lock, see the chinese utility model patent "electric suction lock" (the publication number is CN210858329U) with the patent number zl201920965689.x, and the patent realizes the driving fit by combining a gear set with a tapered tooth, and the structure is more compact. However, the patent has the following disadvantages:

1. the whole control needs three micro-switches, the structure is relatively complicated, and certain limitation is arranged in the installation.

2. The hidden danger of locking exists, and when the driving mechanism drives the shifting fork to rotate, power is cut off suddenly, the shifting fork blocks the lock tongue, and manual operation for opening the electric suction lock cannot be realized.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide an electric suction lock for a vehicle tail gate, which can be manually unlocked at any time to finish unlocking, aiming at the technical current situation.

The second technical problem to be solved by the present invention is to provide an electric suction lock for a vehicle rear door, which has low requirements on the number of micro switches and installation, in view of the above technical situation.

The technical scheme adopted by the invention for solving the technical problems is as follows: an electric suction lock for the tail door of vehicle is composed of a lock body with a spring, a spring and a spring

The lock shell is provided with an inner space and a first locking opening for the lock hook to be placed in;

a driving mechanism arranged on the lock shell;

the lock bolt can be rotatably arranged in the lock shell, a second locking notch is formed at one end of the lock bolt, and a stress part and a leaning part are formed at the other end of the lock bolt;

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

the ratchet plate can be rotatably arranged in the lock shell and is provided with a blocking part which is matched with the abutting part to limit the lock tongue;

the second spring is arranged in the lock shell and is used for resetting the ratchet plate;

the shifting fork can be rotatably arranged in the lock shell, one end of the shifting fork is in transmission connection with the power output end of the driving mechanism, and the other end of the shifting fork is provided with a shifting part;

the shifting block can be rotatably arranged on the shifting fork and can move along with the shifting fork;

the third spring is arranged in the lock shell and used for resetting the shifting block;

a deflector rod, the inner end of which can be rotatably arranged in the lock shell and is provided with a transmission part, and the outer end of which extends out of the lock shell to form an operation part;

the middle part of the limiting plate can be rotatably arranged in the lock shell, one end of the limiting plate can be in limiting fit with the shifting block, and the other end of the limiting plate is movably connected with the shifting rod through a connecting rod; and

the fourth spring is arranged in the lock shell and used for resetting the limiting plate;

the driving mechanism drives the shifting fork to rotate along a first direction to drive the shifting block, the shifting block acts on the stress part to drive the lock tongue to rotate, meanwhile, the shifting part of the shifting fork acts on the transmission part of the shifting lever, the transmission part drives the ratchet plate to rotate, the blocking part of the ratchet plate is matched with the abutting part of the lock tongue to limit the lock tongue, and the second lock notch is matched with the first lock notch to realize locking;

the driving mechanism drives the shifting fork to rotate along a second direction opposite to the first direction, the shifting block rotates reversely, the effect on the lock tongue is removed, and the second lock opening is matched with the first lock opening to realize unlocking;

the manual operation driving lever, transmission portion drive ratchet board, the portion of supporting on the ratchet board breaks away from the fender portion of spring bolt, rotates through connecting rod drive limiting plate simultaneously, and the shifting block return removes the effect to the spring bolt, and the unblock is realized with first fore shaft cooperation to the second fore shaft.

Furthermore, in order to realize linkage of the walking position of the spring bolt and the motor, the electric suction lock further comprises a first microswitch and a second microswitch which are arranged in the lock shell, a convex part is arranged on the spring bolt, the spring bolt is in a locked state, the first microswitch is in contact with the convex part and triggers a first signal to the driving mechanism, and the second microswitch is in contact with the convex part and triggers a second signal to the driving mechanism when the spring bolt is in a complete unlocked state.

Preferably, the shift fork has a sector gear formed at one end thereof, and the driving mechanism may include

The motor can rotate positively and negatively;

the worm is arranged on the output shaft of the motor;

a worm wheel which is in mesh transmission with the worm and is provided with a coaxial output gear on one side; and

the input end of the duplex gear is in meshing transmission with the output gear, and the output end of the duplex gear is in meshing transmission with the sector gear.

Preferably, the connecting rod is in a bridge shape and comprises supporting parts at two ends and a connecting bridge part positioned above the supporting parts, and the supporting parts are respectively movably connected with the shifting rod and the limiting plate.

Preferably, the middle part of shifting block can rotate and locate on the projection of shift fork, the rear end form with the spacing complex ring portion of limiting plate, the front end form can act on the promotion portion of spring bolt, correspondingly, the limiting plate is formed with ring portion complex joint portion.

Preferably, the third spring is a torsion spring, one end of the third spring is arranged on the convex column, and the other end of the third spring is arranged on the shifting block.

The driving lever can be rotatably arranged in the lock shell through a connecting shaft in the lock shell, and the connecting shaft can limit the pushing part of the driving block to move continuously. The convex column simultaneously plays a role in connecting the rotating shaft and the limiting column.

The driving lever have a groove, when the lock is unlocked electrically, the shifting part of the shifting fork drives the ratchet plate to rotate to unlock, when the shifting part rotates, the shifting part slides into the groove of the driving lever, after the lock is unlocked, the driving lever can return under the indirect acting force of the second spring, and the driving lever can return automatically, so that the manual lock closing function is not influenced.

Compared with the prior art, the invention has the advantages that: when the lock is unlocked by means of operation, the shifting lever pushes the shifting fork to shift the ratchet plate to release the effect on the lock tongue, and meanwhile, the limiting plate is pushed through the connecting rod to release the limiting of the shifting block, the shifting block returns to the original position to release the effect on the lock tongue, so that the lock tongue can be manually and emergently unlocked at any position, and the safety is ensured.

Drawings

FIG. 1 is a structural diagram of a locked state according to an embodiment.

Fig. 2 is a partially exploded view of the embodiment.

FIG. 3 is a diagram of the combination of the shift lever, the connecting rod and the limiting plate in the embodiment.

FIG. 4 is a combination diagram of the fork and the shifting block in the embodiment.

Fig. 5 is a schematic structural view of the driving mechanism.

Fig. 6 is a structural schematic diagram of an unlocking state of the embodiment.

FIG. 7 is a schematic structural diagram of a half-locked state according to an embodiment.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 and 2, the electric rear door latch of the present embodiment includes a lock housing 1, a driving mechanism 2, a latch bolt 4, a first spring, a ratchet plate 5, a second spring, a fork 3, a dial 40, a lever 6, a limit plate 7, a fourth spring 73, a first microswitch 91 and a second microswitch 92.

The lock shell 1 is provided with an inner space and a first lock opening 11 for the lock hook to be put in; the driving mechanism 2 is arranged on the lock shell 1.

The bolt 4 is rotatably arranged in the lock shell 1 through a first shaft 43, a second locking notch 42 is formed at one end of the bolt 4, and a stressed part 45 and an abutting part 41 are formed at the other end of the bolt 4; the bolt 4 is provided with a convex part, the bolt 4 is in a locked state, the first microswitch is in contact with the convex part and triggers a first signal to the driving mechanism 2, the bolt 4 is in a completely unlocked state, and the second microswitch is in contact with the convex part and triggers a second signal to the driving mechanism 2. The first spring 44 is a torsion spring, is arranged in the lock case 1 for resetting the bolt 4, and is specifically arranged on the first shaft 43.

The ratchet plate 5 is rotatably arranged in the lock shell 1 through a second shaft 52 and is provided with a stop part 51 which is matched with the abutting part 41 to limit the bolt 4; the second spring 53 is a torsion spring, and is disposed in the lock case 1 for resetting the ratchet plate 5, and specifically, the second spring 53 is disposed on the second shaft 53.

As shown in fig. 4, the shifting fork 3 is rotatably disposed in the lock case 1, and one end of the shifting fork is in transmission connection with the power output end of the driving mechanism 2, and the other end of the shifting fork is formed with a shifting portion 33; a sector gear 31 is formed at one end of the shift fork 3 in this embodiment.

Combine shown in fig. 4, shifting block 40 can rotate and locate on shift fork 3 and can remove along with shift fork 3, specifically, the middle part of shifting block 40 can rotate and locate on the projection 32 of shift fork 3, the rear end form with the spacing complex ring portion 402 of limiting plate 7, the front end form can act on the promotion portion 401 of spring bolt 4, correspondingly, limiting plate 7 is formed with the complex joint portion of ring portion 402.

The third spring 34 is disposed in the lock case 1 for resetting the shift block 40, and specifically, the third spring 34 is a torsion spring, one end of which is disposed on the protruding column 32, and the other end of which is disposed on the shift block 40.

The inner end of the deflector rod 6 can be rotatably arranged in the lock shell 1 through the connecting shaft 14 and is provided with a transmission part 62, and the outer end extends out of the lock shell 1 to form an operation part 61; the connecting shaft 14 can limit the pushing part 401 of the shifting block 40 from moving continuously. The shift lever 6 has a recess 63.

The middle part of the limiting plate 7 is rotatably arranged in the lock shell 1 through a third shaft 15, one end of the limiting plate can be in limiting fit with the shifting block 40, and the other end of the limiting plate is movably connected with the shifting rod 6 through a connecting rod 8; the fourth spring 73 is a torsion spring and is arranged on the third shaft 15 and used for resetting the limiting plate 7;

referring to fig. 5, the driving mechanism 2 in this embodiment includes a motor 21, a worm 22, a worm wheel 23, and a duplicate gear 24, and the motor 21 can rotate forward and backward; the worm 22 is arranged on the output shaft of the motor 21; the worm wheel 23 is in meshing transmission with the worm 22 and is provided with a coaxial output gear 231 on one side; the input end 241 of the duplicate gear 24 is in mesh transmission with the output gear 231, and the output end 242 is in mesh transmission with the sector gear 31.

Referring to fig. 3, the connecting rod 8 in this embodiment is in a bridge shape, and includes supporting portions 82 at two ends and a connecting bridge portion 81 located above the supporting portions 82, and the supporting portions 82 are movably connected to the shift lever 6 and the limiting plate 7, respectively.

During the locking, latch bolt 4 is touch to latch hook 10, latch bolt 4 rotates, convex part 43 and first micro-gap switch 91 effect, motor 21 obtains the signal, actuating mechanism 2 drive shift fork 8 rotates along the first direction, drive shifting block 40, shifting block 40 acts on atress portion 45, order about latch bolt 4 to rotate, shift part 33 of shift fork 3 acts on the drive division 62 of driving lever 6 simultaneously, drive division 62 drive ratchet board 5 rotates, thereby make the fender portion 51 of ratchet board 5 and the portion 41 cooperation of supporting of latch bolt 4 restrict latch bolt 4, second fore shaft 42 realizes pinning with the cooperation of first fore shaft 11, convex part 43 and the second micro-gap switch 92 on at this moment latch bolt 4 act on, motor 21 obtains the signal, stop work, as shown in fig. 1.

When the lock is unlocked electrically, the motor 21 obtains a signal, the driving mechanism 2 drives the shifting fork 3 to rotate along a second direction opposite to the first direction, the shifting block 40 rotates reversely to remove the effect on the lock tongue 4, the shifting part slides into the groove of the shifting fork when rotating, and the second locking notch 42 is matched with the first locking notch 11 to realize electric unlocking, as shown in fig. 6;

when the lock is manually unlocked, the shift lever 6 is manually operated, the transmission part 62 drives the ratchet plate 5, the abutting part 41 on the ratchet plate is separated from the blocking part 41 of the lock bolt, the limiting plate 7 is driven to rotate through the connecting rod 8, the shift block 40 returns to release the action on the lock bolt 4, and the second locking notch 42 is matched with the first locking notch 11 to realize manual unlocking.

After the lock is unlocked, the shifting rod 6 can return under the indirect acting force of the second spring 53, and the shifting rod 6 can automatically return, so that the manual lock closing function is not influenced.

As shown in fig. 7, it is a state diagram of the half-lock.

Compared with the technical scheme of ZL201920965689.X, zero position switches are reduced, when the lock is unlocked by means of operation, the shifting fork releases the lock tongue, and the shifting block returns to the original position to release the effect on the lock tongue, so that two ends of the lock tongue are completely unlocked, and the lock tongue can be manually and emergently unlocked at any position to ensure safety. Only the micro switch is reserved, and the arrangement of the inner space is convenient.

Claims

1. An electric suction lock for the tail door of vehicle is composed of a lock body with a spring, a spring and a spring

The lock shell (1) is provided with an inner space and a first locking opening (11) for the lock hook to be placed in;

a driving mechanism (2) arranged on the lock shell (1);

the bolt (4) can be rotatably arranged in the lock shell (1), a second locking notch (42) is formed at one end of the bolt, and a stress part and a leaning part (41) are formed at the other end of the bolt (4);

the first spring is arranged in the lock shell (1) and used for resetting the lock tongue (4);

a ratchet plate (5) which is rotatably arranged in the lock shell (1) and is provided with a blocking part (51) which is matched with the abutting part (41) to limit the bolt (4);

a second spring, which is arranged in the lock shell (1) and is used for resetting the ratchet plate (5);

the shifting fork (3) is rotatably arranged in the lock shell (1), one end of the shifting fork is in transmission connection with the power output end of the driving mechanism (2), and the other end of the shifting fork is provided with a shifting part (33);

the shifting block (40) is rotatably arranged on the shifting fork (3) and can move along with the shifting fork;

a third spring (34) which is arranged in the lock shell (1) and is used for resetting the shifting block (40);

a deflector rod (6), the inner end of which can be rotatably arranged in the lock shell (1) and is formed with a transmission part (62), and the outer end of which extends out of the lock shell (1) to form an operation part (61);

a limiting plate (7), the middle part of which can be rotatably arranged in the lock shell (1), one end of which can be in limit fit with the shifting block (40), and the other end of which is movably connected with the shifting lever (6) through a connecting rod (8); and

a fourth spring (73) which is arranged in the lock shell (1) and is used for resetting the limiting plate (7);

the driving mechanism (2) drives the shifting fork (8) to rotate along a first direction to drive the shifting block (40), the shifting block (40) acts on the stress part to drive the lock tongue (4) to rotate, meanwhile, the shifting part (33) of the shifting fork (3) acts on the transmission part (62) of the shifting lever (6), the transmission part (62) drives the ratchet plate (5) to rotate, the blocking part (51) of the ratchet plate (5) is matched with the abutting part (41) of the lock tongue (4) to limit the lock tongue (4), and the second lock notch (42) is matched with the first lock notch (11) to realize locking;

the driving mechanism (2) drives the shifting fork (3) to rotate along a second direction opposite to the first direction, the shifting block (40) rotates reversely, the effect on the lock tongue (4) is removed, and the second locking notch (42) is matched with the first locking notch (11) to realize unlocking;

the manual operation driving lever (6), the transmission part (62) removes the effect on the ratchet plate (5), meanwhile, the connecting rod (8) drives the limiting plate (7) to rotate, the shifting block (40) returns to remove the effect on the lock tongue (4), and the second locking notch (42) is matched with the first locking notch (11) to achieve unlocking.

2. The vehicle tail-gate electric absorption lock according to claim 1, characterized in that the electric absorption lock further comprises a first micro switch and a second micro switch which are arranged in the lock shell (1), a convex part is arranged on the bolt (4), when the bolt (4) is in the locking state, the first micro switch contacts with the convex part and triggers a first signal to the driving mechanism (2), when the bolt (4) is in the complete unlocking state, the second micro switch contacts with the convex part and triggers a second signal to the driving mechanism (2).

3. The electric rear door lock according to claim 1, wherein a sector gear (31) is formed at one end of the fork (3), and the driving mechanism (2) includes

A motor (21) capable of rotating in the forward and reverse directions;

a worm (22) provided on an output shaft of the motor (21);

a worm wheel (23) which is in mesh transmission with the worm (22) and has a coaxial output gear (231) on one side; and

the input end (241) of the duplicate gear (24) is in meshed transmission with the output gear (231), and the output end (242) is in meshed transmission with the sector gear (31).

4. The electric vehicle tailgate latch according to claim 1, wherein the connecting rod (8) is bridge-shaped and includes a support portion (82) at both ends and a connecting bridge portion (81) above the support portion (82), and the support portion (82) is movably connected to the shift lever (6) and the stopper plate (7), respectively.

5. The vehicle tail-gate electric-absorption lock according to claim 1, wherein the middle part of the shifting block (40) can be rotatably arranged on the convex column (32) of the shifting fork (3), the rear end of the shifting block forms a circular ring part (402) in limit fit with the limiting plate (7), the front end of the shifting block forms a pushing part (401) capable of acting on the lock tongue (4), and correspondingly, the limiting plate (7) forms a clamping part matched with the circular ring part (402).

6. The electric vehicle tailgate latch according to claim 5, wherein the third spring (34) is a torsion spring having one end mounted on the boss (32) and the other end mounted on the moving block (40).

7. The vehicle tail-gate electric absorption lock according to claim 5, characterized in that the deflector rod (6) is rotatably arranged in the lock shell (1) through a connecting shaft (14) in the lock shell (1), and the connecting shaft (14) can limit the push part (401) of the deflector block (40) to move continuously.

8. The electric vehicle tailgate lock according to claim 1, wherein the shift lever has a recess, and when the lock is electrically unlocked, the shift portion (33) of the shift fork drives the ratchet plate to rotate to unlock, and when the shift portion rotates, the shift lever slides into the recess of the shift lever, and after unlocking, the shift lever can return under the indirect force of the second spring (53).