CN-122014069-A - Door lock for vehicle

Abstract

The invention relates to the technical field of vehicle manufacturing, in particular to a vehicle door lock, which comprises a shell, a safety lever, a shifting piece, a rotating disc and a lock tongue, wherein an electric opening safety piece is arranged in the shell, the safety lever is movably arranged in the shell, one end of the safety lever is in transmission connection with the electric opening safety piece, the other end of the safety lever is provided with a first matching block, the shifting piece is rotatably arranged in the shell, a fork opening is arranged on the shifting piece, the first matching block is slidably arranged in the fork opening, one end of the first matching block extends out along the thickness direction of the fork opening, the safety lever can slide between a first position and a second position in the fork opening, the shifting piece is respectively connected with an inner opening pull wire and an outer opening pull wire, the rotating disc is rotatably arranged in the shell and is positioned on the extending side of the shifting piece, one end of the rotating disc is provided with a second matching block extending towards the shifting piece, when the safety lever slides to the first position, the second matching block is abutted against the first matching block, and when the safety lever slides to the second position, the second matching block is separated from the first matching block, and the lock tongue is arranged in linkage with the rotating disc. The invention provides a door lock which has a simplified structure, reduced cost and reliable unlocking.

Inventors

• ZHANG MINGLONG
• ZHONG WEICHAO

Assignees

• 河南东威智能科技有限公司

Dates

Publication Date

20260512

Application Date

20260325

Claims (10)

1. 1. A door lock, the door lock comprising: The shell is internally provided with an electric opening safety piece; The safety rod is movably arranged in the shell, one end of the safety rod is in transmission connection with the electric opening safety piece, and the other end of the safety rod is provided with a first matching block; the pulling piece is rotatably arranged in the shell, a fork opening is formed in the pulling piece, the first matching block is slidably arranged in the fork opening, one end of the first matching block extends out along the thickness direction of the fork opening, the safety rod can slide between a first position and a second position in the fork opening, and the pulling piece is respectively connected with the inner opening pulling wire and the outer opening pulling wire; The rotating disc is rotatably arranged in the shell and positioned at the extending side of the poking piece, one end of the rotating disc is provided with a second matching block extending towards the poking piece, when the bumper slides to the first position, the second matching block is abutted with the first matching block, and when the bumper slides to the second position, the second matching block is separated from the first matching block; the lock tongue is arranged in linkage with the rotating disc, when the rotating disc and the lock tongue are meshed, the door lock is in a locked state, and when the rotating disc and the lock tongue are separated, the door lock is in an unlocked state.
2. 2. The door lock according to claim 1, wherein the first fitting block is provided with abutment blocks on both sides in a sliding direction thereof, the abutment blocks being abutted with end surfaces outside the fork openings for positioning the first fitting block.
3. 3. The door lock according to claim 1, wherein the electric opening safety member comprises an electric opening connecting rod, an idle running protection wheel and a driving motor, one end of the electric opening connecting rod is in transmission connection with the safety rod, the electric opening connecting rod is used for connecting a locking pull wire, the other end of the electric opening connecting rod is connected with the idle running protection wheel, and the driving motor is used for driving the idle running protection wheel to rotate; When the locking stay wire drives the electric opening connecting rod to rotate, relative idle rotation is generated inside the idle rotation protection wheel.
4. 4. The door lock according to claim 3, wherein the idle wheel comprises a transmission gear and an idle wheel which are coaxially arranged, the transmission gear is connected with the output end of the driving motor, the idle wheel is linked with the electric opening connecting rod, the center of the transmission gear is provided with a mounting part, the idle wheel is rotatably mounted in the mounting part, the mounting part is convexly provided with an idle block towards the direction of the idle wheel, the idle wheel is internally provided with an idle groove matched with the idle block, and the idle block is embedded in the idle groove and can slide along the idle groove; when the idle rotation block rotates to the position where the idle rotation block is abutted against the wall of the idle rotation groove, the transmission gear drives the idle rotation wheel to rotate.
5. 5. The door lock according to claim 4, wherein the idler pulley is provided with a mounting block in a protruding manner, and one end of the electric opening connecting rod is fixed to the mounting block.
6. 6. The door lock according to claim 1, wherein the dial is provided with a mounting hole, the housing is provided with an unlocking wall, a locking wall and a rotating shaft, and the dial is mounted on the rotating shaft through the mounting hole and rotates between the unlocking wall and the locking wall.
7. 7. The door lock according to claim 6, wherein the paddle is provided with an abutment wall provided on the fork and disposed toward the rotating disk for abutment with the locking wall.
8. 8. The door lock according to claim 7, wherein the dial is provided with a return member provided on the rotation shaft, the return member being for applying an elastic force to the dial in a direction from the unlocking wall to the locking wall.
9. 9. The door lock of claim 1, wherein the housing is further provided with a cushion pad disposed at an unlocked position of the latch for cushioning the latch.
10. 10. The door lock of claim 1, further comprising a status reminder disposed on a rotational trajectory of the latch, the status reminder being triggered to generate a signal indicative of the door being in an unlocked state when the latch is rotated to an unlocked position.

Description

Door lock for vehicle Technical Field The invention relates to the technical field of vehicle manufacturing, in particular to a door lock. Background The door lock is used as a key component of automobile safety and convenience, and the core function of the door lock needs to realize reliable locking and convenient opening. Modern vehicles commonly adopt an electric control mode to realize centralized locking and unlocking of the vehicle door, and the manual opening capability under emergency conditions is reserved through an inner mechanical stay wire and an outer mechanical stay wire. However, the door lock structure integrating the electric control safety and the mechanical inside and outside unlocking functions is generally complex. The electric driving mechanism needs to drive the locking state of the lock tongue to switch through a series of transmission parts, and the inner and outer opening stay wires need to drive the lock tongue to unlock through another set of linkage mechanism. These two systems are often staggered, resulting in lengthy and numerous components in the transmission link. The complex linkage relationship not only increases the manufacturing and assembling difficulties of the mechanism, but also is more likely to cause the problem of reliability reduction caused by abrasion and clamping stagnation of individual parts after long-term use, such as failure of electric locking or unsmooth manual opening and other faults. Furthermore, in the prior art, the transmission path of the state switching of the door lock is not direct and clear enough, and the clear and efficient mechanical coupling between the displacement of the bumper and the final locked/unlocked state of the lock tongue is lacking, which may affect the accuracy of the system response and the intuitive perception of the user. Therefore, there is a need for a door lock solution that is structurally simplified, reliable in linkage and low in cost, so as to improve the overall reliability, durability and operating experience of the product. Disclosure of Invention The invention solves the problem of providing a door lock scheme with simplified structure, reliable linkage and low cost, so as to improve the overall reliability, durability and operation experience of the product. The automobile door lock comprises a shell, a safety piece, a safety rod, a shifting piece, a spring bolt, a rotating disc and a lock tongue, wherein the safety piece is arranged in the shell, the safety piece is electrically opened, the safety rod is movably arranged in the shell, one end of the safety rod is in transmission connection with the safety piece, the other end of the safety rod is provided with a first matching block, the shifting piece is rotatably arranged in the shell, a fork opening is arranged on the shifting piece, the first matching block is slidably arranged in the fork opening, one end of the first matching block extends out along the thickness direction of the fork opening, the safety rod can slide between a first position and a second position in the fork opening, the shifting piece is respectively connected with an inner pull wire and an outer pull wire, the rotating disc is rotatably arranged in the shell and is positioned on the extending side of the shifting piece, one end of the safety rod is provided with a second matching block extending towards the shifting piece, when the safety rod slides to the first position, the second matching block is in abutting against the first matching block, when the safety rod slides to the second position, the second matching block is separated from the first matching block, the spring tongue is arranged with the rotating disc, when the rotating disc and the spring tongue is in a locked state, and the automobile door lock is in an unlocked state when the rotating disc and the lock is in a locked state. The automobile door lock constructs an automobile door locking or unlocking system combining electric control and mechanical transmission through the linkage structure of the shell integrated with the electric unlocking safety piece, the safety rod, the poking piece, the rotating disc and the lock tongue, and realizes accurate switching and stable control of the automobile door lock state. The safety lever is switched between the first position and the second position through the sliding fit of the first fit block and the shifting block fork opening on the safety lever, the second fit block and the first fit block are matched on the rotating disc, when the safety lever slides to the first position, the second fit block is abutted with the first fit block, the linkage action of the rotating disc is limited, the door lock is ensured to be in a stable locking state, unexpected unlocking is effectively prevented, when the safety lever slides to the second position, the first fit block and the second fit block are separated, the rotating disc is released from limit, and the unlocking can be completed