CN116146056A

CN116146056A - Automobile tail door lock

Info

Publication number: CN116146056A
Application number: CN202310263465.5A
Authority: CN
Inventors: 范捷; 舒冬冬; 郑定海; 苏忠益; 余祥; 王晨
Original assignee: Zhejiang Tianyue Automobile Parts Co ltd
Current assignee: Zhejiang Tianyue Automobile Parts Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-05-23

Abstract

The invention discloses an automobile tail door lock, which comprises a shell, a large lock tongue and a small lock tongue machine mechanical driving assembly, wherein the large lock tongue is sequentially provided with a locking groove, a half lock ratchet groove and a driving groove along the anticlockwise direction; the small lock tongue is provided with a lock tongue and a linkage arm, and the lock tongue head is respectively in stop fit with the stop end of the half lock ratchet groove and the stop end of the lock groove; the mechanical driving assembly comprises a transmission gear set, a clutch and a driving arm, wherein the transmission gear set comprises an output gear and a driving gear, the driving arm is meshed with the driving gear, the driving arm is provided with a first driving part and a second driving part, the first driving part is matched with the linkage arm, and the second driving part is matched with the driving end of the driving groove. The invention adopts one power to realize self-suction closing of the tail door lock and automatic unlocking, and has more exquisite structure and lower processing cost.

Description

Automobile tail door lock

Technical Field

The invention relates to an improved invention of an automobile tail door lock, in particular to an automobile tail door lock with a self-priming function.

Background

At present, the switch of the automobile tail door of the high-grade automobile is automatically opened and closed, so that manual operation is replaced, and the automobile tail door is more convenient to use. The automobile tail gate adopts a gas spring for driving, and the patent is disclosed in the patent publication No. CN112681925A, entitled "gas spring for automobile, tail gate and automobile". The tail door of the manual switch is an acoustic device which utilizes the external force and the gravity of the tail door to press the lock catch into the lock groove of the lock tongue completely, so that the lock tongue is in a locking state, and the tail door vibrates very greatly and is closed when closed; the automatic opening and closing automobile tail door uses the gas spring to pull the tail door to swing downwards until the lock catch of the tail door enters the lock groove, at the moment, the tail door is not completely closed and is in a half-locking state, in this case, the tail door cannot vibrate and cannot be closed due to vibration, but the tail door lock with a self-priming function is required to be provided, and the lock tongue in the half-locking state is converted into a full-locking state through the self-priming function of the tail door lock.

The tail door lock with the self-priming function achieves the self-priming locking function by driving the lock tongue to rotate through a motor, and when unlocking, the lock tongue is separated from the pawl through the swing of the motor driving pawl and is turned into an unlocking state. At present, the tail door lock with the self-priming function needs to be provided with two motors for unlocking and self-priming respectively, and the invention is named as self-priming tail door lock assembly with the publication number of CN20780519U, but the double-motor control is complex in structure and high in cost.

Disclosure of Invention

In view of the technical problems existing in the background art, the technical problems solved by the invention aim to provide the automobile tail door lock with simple structure and lower processing cost.

In order to solve the technical problems, the invention adopts the following technical scheme: this kind of automobile tail door lock, its characterized in that: comprises the following steps of

A housing having a mounting plate disposed therein;

the large lock tongue is rotatably arranged on the mounting plate and is connected with a first return spring which enables the large lock tongue to rotate towards an unlocking state, a lock groove, a half lock ratchet groove and a driving groove are sequentially formed in the large lock tongue in the anticlockwise direction, the locking groove and the half lock ratchet groove are provided with a anticlockwise direction stopping end, and the anticlockwise direction of the driving groove is a driving end;

the small lock tongue is rotatably arranged on the mounting plate and is provided with a lock tongue and a linkage arm, the lock tongue head is respectively in stop fit with the stop end of the half lock ratchet groove and the stop end of the lock groove, and the small lock tongue is connected with a return spring II which enables the lock tongue head to press against the large lock tongue;

and a mechanical drive assembly comprising

The transmission gear set comprises an input gear, an output gear and a driving gear, wherein the input gear is connected with an output shaft of the motor,

the clutch comprises a driving disk, a sucker and a coil, wherein meshed toothed rings are arranged on opposite end surfaces of the driving disk and the sucker, a spring is arranged between the driving disk and the sucker, a connecting shaft is arranged on the disk surface of the driving disk, a shaft hole matched with the connecting shaft is arranged on the end surface of the output gear, the sucker is connected with the driving gear,

and the driving arm is rotationally arranged on the mounting plate, the surface of the driving arm is provided with insections and is meshed with the driving gear, the driving arm is provided with a first driving part and a second driving part, the first driving part faces the linkage arm and the linkage arm is arranged in the clockwise direction of the driving arm, the second driving part is arranged on the end face of the driving arm and is axially arranged relative to the large lock tongue, the second driving part is matched with the driving end of the driving groove, and the driving arm is further connected with a return spring III and a return spring IV which enable the driving arm to reset.

When the clutch is self-priming, the driving disk of the clutch is meshed with the sucker, the motor drives the driving arm to swing anticlockwise, the second driving part of the driving arm acts on the driving end of the large lock tongue to push the large lock tongue to rotate anticlockwise, and the small lock tongue slides on the surface of the large lock tongue until the lock tongue head enters the lock groove and is pressed with the stop end of the lock groove, so that the full lock is realized; after the driving arm completes the full-locking operation, the driving disc of the clutch is separated from the sucker, and the driving arm reversely swings and resets under the action of the return spring IV. When unlocking, the driving disc of the clutch is meshed with the sucker, the motor drives the driving arm to swing clockwise, the first driving part of the driving arm drives the small lock tongue to swing clockwise, the small lock tongue is separated from the lock groove, the large lock tongue rotates clockwise to an unlocking state under the action of the first return spring, then the driving disc of the clutch is separated from the sucker, and the driving arm resets under the action of the third return spring. The invention adopts a motor to realize self-suction closing of the tail door lock and automatic unlocking, and has more exquisite structure and lower processing cost.

Preferably, the automobile tail door lock further comprises a manual unlocking assembly, the manual unlocking assembly comprises a swing arm, the swing arm is rotatably arranged on the shell, the swing arm is connected with a return spring five, a first limiting part corresponding to the return spring five is arranged on the shell, the rotating track of the swing arm is perpendicular to the swinging track of the linkage arm, one end of the swing arm is connected with a pull rope, and the other end of the swing arm is matched with the linkage arm. Under the condition that the mechanical driving assembly fails, the mechanical unlocking mechanism can also be manually unlocked, and the multi-way unlocking practicability is better.

Preferably, the automobile tail door lock further comprises a position sensor and a controller, wherein the position sensor, the clutch and the motor are electrically connected with the controller, the position sensor comprises a first sensor and a second sensor, the first sensor senses with a first signal arm of the large lock tongue, and the second sensor senses with a second signal arm of the small lock tongue. The controller obtains the state that the big lock tongue lock is in half lock, full lock or unblanked through the position of big lock tongue and little lock tongue that position sensor gathered, finally sends the instruction to the motor, makes tail-gate lock close or open.

Preferably, the shell is provided with a second limiting part and a third limiting part, the second limiting part is used for limiting the large lock tongue at an unlocking station, and the third limiting part is used for limiting the small lock tongue at a half-locking station and a full-locking station. The second limiting piece and the third limiting piece limit the rotation angles of the large lock tongue and the small lock tongue respectively, the second limiting piece enables the large lock tongue to stay at an unlocking station, and the third limiting piece enables the pin lock tongue to stay at a full lock state and a half lock state.

Drawings

Fig. 1 is a perspective view of the present invention with a portion of the housing removed.

Fig. 2 is a schematic view of the inside of the housing of the present invention.

Fig. 3 is a front view of fig. 2 of the present invention.

Fig. 4 is a rear view of fig. 2 in accordance with the present invention.

Fig. 5 is a partial cross-sectional view of the present invention.

Fig. 6 is a schematic view of a clutch of the present invention.

Fig. 7 is a state diagram of the large lock tongue of the present invention from full lock-unlock-half lock.

Detailed Description

The details and working principles of the embodiments and examples of the present invention are described below with reference to the drawings. The automobile tail door lock comprises a shell 16, a large lock tongue 1, a small lock tongue 9 and a mechanical driving assembly, wherein a mounting plate 10 is arranged in the shell, and divides the inner cavity of the shell into a first cavity and a second cavity, so that the installation of components is facilitated, and a transmission component and the lock tongue can be arranged separately; the large lock tongue 1 is rotatably arranged on the mounting plate 10, the large lock tongue is connected with a first return spring which enables the large lock tongue to rotate towards an unlocking state, a lock groove 8, a half lock ratchet groove 3 and a driving groove 6 are sequentially formed in the anticlockwise direction of the large lock tongue, a anticlockwise direction stopping end 2 of the lock groove and the half lock ratchet groove, and the anticlockwise direction of the driving groove is a driving end 7; the small lock tongue 9 is rotatably arranged on the mounting plate 10, the small lock tongue is provided with a lock tongue 4 and a linkage arm 5, the lock tongue heads are respectively matched with the stop end of the half lock ratchet groove and the stop end of the lock groove in a stop mode, the small lock tongue is connected with a return spring II which enables the lock tongue 4 to press against the large lock tongue 1 to limit the rotation angle of the small lock tongue, a third limiting piece is arranged on the shell, when the stop end 2 of the lock groove is pressed with the lock tongue head 4, the limiting end of the small lock tongue is pressed with the third limiting piece, namely the elastic force of the return spring II enables the small lock tongue to rotate anticlockwise until the small lock tongue is blocked by the third limiting piece, the small lock tongue can support the stop end of the large lock tongue, and the large lock tongue is in a full lock station or a half lock station. Similarly, in order to limit the rotation angle of the large lock tongue, the shell is provided with a second limiting piece, and the elastic force of the first return spring enables the large lock tongue to rotate clockwise until the large lock tongue is blocked by the second limiting piece, so that the large lock tongue stays at an unlocking station. The large lock tongue is sequentially provided with an unlocking station, a half-locking station and a full-locking station in the circumferential direction, as shown in fig. 7, when the locking groove 8 of the large lock tongue is arranged at the half-locking station, the locking end of the half-locking ratchet groove 3 is pressed with the lock tongue head 4 of the small lock tongue, and is in a half-locking state; the large lock tongue rotates anticlockwise, the lock groove rotates the full-lock station, the lock tongue head enters the lock groove 8, and the stop end 2 of the lock groove is pressed with the lock tongue head, and is in a full-lock state at the moment; when the small lock tongue 9 is separated from the large lock tongue 1, the first return torsion spring enables the large lock tongue to rotate along the pointer, the lock groove rotates to the unlocking station, and the large lock tongue is in an unlocking state at the moment.

The mechanical driving assembly comprises a transmission gear set, a clutch and a driving arm 18, wherein the transmission gear set comprises an input gear 22, an output gear 17 and a driving gear 15, the input gear is connected with an output shaft of a motor 21, and the output torque is increased to 600-800nm through three-level or four-level speed reduction from the input gear 22 to the output gear; the clutch comprises a driving disc 23, a sucker 24 and a coil, wherein meshed toothed rings 32 are arranged on opposite end surfaces of the driving disc 23 and the sucker 24, a spring 26 is arranged between the driving disc and the sucker, a connecting shaft 29 is arranged on the disc surface of the driving disc, a shaft hole matched with the connecting shaft is arranged on the end surface of the output gear, the sucker 35 is connected with the driving gear 26, the connecting shaft 29 of the driving disc is inserted into the shaft hole, and when the driving disc axially moves relative to the output gear, the connecting shaft moves in the shaft hole; the output gear 17 rotates to drive the driving disc 23 to rotate, the driving disc is meshed with the toothed ring of the sucker, the driving disc drives the sucker 24 to synchronously rotate, and the sucker drives the driving gear 15 to rotate; in the figure, the output gear 17 rotates and sets up on the installation axle 25, the installation axle rotates and sets up on casing 16, driving disk 23 and output gear coaxial arrangement, and driving disk 24 can axial displacement relative to output gear, the center of sucking disc 24 is equipped with axle sleeve 27, axle sleeve one end is connected with the center pin 28 of driving gear, the other end and the installation axle of axle sleeve are connected, and the axle sleeve 27 is around establishing the coil outward, and the coil circular telegram produces magnetic force is that the driving disk overcomes the elasticity of spring and removes to the sucking disc, and both meshing, and output gear just can drive driving gear rotation this moment. The driving arm 18 is rotatably arranged on the mounting plate 10, the surface of the driving arm is provided with insections 19 and is meshed with the driving gear 15, the driving arm is provided with a first driving part 11 and a second driving part 12, the first driving part faces the linkage arm 5, the linkage arm is arranged in the clockwise direction of the driving arm, the second driving part is arranged on the end face of the driving arm and is axially arranged relative to the large lock tongue, the second driving part is matched with the driving end 7 of the driving groove 6, the driving arm is also connected with a return spring III and a return spring IV which enable the return spring III and the return spring IV to reset, the directions of the two return springs acting on the driving arm are opposite, and the elastic force of the two return positions of the driving arm are mutually offset. The driving gear drives the driving arm to rotate clockwise, and the first driving part pushes the linkage arm to enable the lock tongue head of the small lock tongue to leave the large lock tongue, and the large lock tongue rotates to an unlocking state under the driving of the first return spring; the driving gear drives the driving ratio to rotate anticlockwise, and then the second driving part pushes the large lock tongue to rotate anticlockwise, so that the large lock tongue rotates to a full-lock state.

The automobile tail door lock further comprises a manual unlocking assembly, the manual unlocking assembly comprises a swing arm 20, the swing arm is rotatably arranged on the shell 16 and is connected with a return spring five, a first limiting piece corresponding to the return spring five is arranged on the shell, the rotating track of the swing arm 20 is perpendicular to the swinging track of the linkage arm 5, the installation of the swing arm cannot influence the installation of the mechanical driving assembly, the structural layout is more reasonable, and the disassembly and the assembly are more convenient; one end of the swing arm is connected with a pull rope, and the other end of the swing arm is matched with the linkage arm; the manual unlocking is added, more choices are provided for a user, particularly when a mechanical driving assembly fails and fails, the tail door can be unlocked and opened manually, namely, a pull rope is pulled, the elastic force of a return spring five is overcome, the swing arm is enabled to rotate towards the direction of the linkage arm, the linkage arm is pushed to enable the small lock tongue to be separated from the large lock tongue, the large lock tongue is rotated to an unlocking state, manual unlocking is achieved, after unlocking, the elastic force of the return spring five is enabled to swing in the opposite direction until the swing arm is pressed with a first limiting piece, and at the moment, the swing arm is reset.

The automobile tail door lock further comprises a position sensor and a controller, wherein the position sensor, the clutch and the motor are electrically connected with the controller, the position sensor comprises a first sensor 13 and a second sensor 14, the first sensor is in induction with a first signal arm 33 of the big lock tongue, and the second sensor is in induction with a second signal arm 34 of the small lock tongue. The controller obtains the state that the big lock tongue lock is in half lock, full lock or unblanked through the position of big lock tongue and little lock tongue that position sensor gathered, finally sends the instruction to the motor, makes tail-gate lock close or open.

When the automobile tail door needs to be closed, firstly the automobile tail door swings downwards, the lock catch enters the lock groove, at the moment, the large lock tongue is in a half-lock state, the stop end of the half-lock ratchet groove is pressed with the lock tongue head, at the moment, the first sensor 13 does not detect the first signal arm 33 of the large lock tongue, the second sensor 14 detects the second signal arm 34 of the small lock tongue, the controller judges that the large lock tongue is in the half-lock state through information sent by the first sensor and the second sensor, the controller sends an instruction to the motor 21 and the clutch, the coil is electrified, the driving disc 23 is meshed with the sucker 24, the motor drives the driving arm 18 to swing anticlockwise, the second driving part 12 of the driving arm acts on the driving end 7 of the large lock tongue, the large lock tongue is pushed to rotate anticlockwise, the small lock tongue slides on the surface of the large lock tongue until the lock tongue head enters the lock groove 8 and is pressed with the stop end 2 of the lock groove, full lock is achieved, at the moment, the first sensor detects the first signal arm of the large lock tongue, the motor stops working, the coil is powered off, the elastic force of the spring 26 enables the driving disc 23 to swing and reset disc 24 to swing reversely under the action of the four return springs. When unlocking, the controller sends an unlocking instruction, the driving disc of the clutch is meshed with the sucker, the motor drives the driving arm to swing clockwise, the first driving part 11 of the driving arm drives the small lock tongue to swing clockwise, the small lock tongue 9 is separated from the lock groove 8, the large lock tongue 1 rotates clockwise to an unlocking state under the action of the first return spring, the second sensor does not detect the second signal arm at the moment, the motor stops working, the driving disc of the clutch is separated from the sucker, and the driving arm resets under the action of the third return spring.

Claims

1. The utility model provides a car tail lock which characterized in that: comprises the following steps of

A housing having a mounting plate disposed therein;

and a mechanical drive assembly comprising

2. The automobile tail gate lock of claim 1, wherein: the automobile tail door lock further comprises a manual unlocking assembly, the manual unlocking assembly comprises a swing arm, the swing arm is rotatably arranged on the shell, the swing arm is connected with a return spring five, a first limiting part corresponding to the return spring five is arranged on the shell, the rotating track of the swing arm is perpendicular to the swinging track of the linkage arm, one end of the swing arm is connected with a pull rope, and the other end of the swing arm is matched with the linkage arm.

3. The automobile tail gate lock of claim 1, wherein: the automobile tail door lock further comprises a position sensor and a controller, wherein the position sensor, the clutch and the motor are electrically connected with the controller, the position sensor comprises a first sensor and a second sensor, the first sensor senses with a first signal arm of the large lock tongue, and the second sensor senses with a second signal arm of the small lock tongue.

4. The automobile tail gate lock of claim 1, wherein: the shell is provided with a second limiting part and a third limiting part, the second limiting part is used for limiting the large lock tongue at an unlocking station, and the third limiting part is used for limiting the small lock tongue at a half-locking station and a full-locking station.