CN-224213979-U - Automatic door opening and closing system with adjustable ball head electric limiter

CN224213979UCN 224213979 UCN224213979 UCN 224213979UCN-224213979-U

Abstract

The utility model relates to the field of passenger cars, in particular to an intelligent control of a passenger car, and specifically relates to an automatic opening and closing system of a car door with an adjustable ball head electric limiter; the electric limiter for automatically opening and closing the vehicle door comprises a vehicle body piece, a vehicle door piece and a limiting arm, wherein one end of the limiting arm is rotationally connected with the vehicle body piece through a pin shaft, the other end of the limiting arm is inserted into the vehicle door piece and can reciprocate, a driving part and a transmission part are arranged between the vehicle door piece and the limiting arm, and the transmission part is rotationally connected with the vehicle door piece and the limiting arm through pin shafts or ball joints respectively, so that the transmission part drives the limiting arm to reciprocate in the vehicle door piece under the drive of the driving part, and the purpose of automatically opening and closing the vehicle door is achieved.

Inventors

HUANG QING
XIE TAO
SUN LICHAO
ZHU SONGSONG
LI QIPENG

Assignees

霍勤(上海)汽车零部件有限公司

Dates

Publication Date: 20260508
Application Date: 20250226
Priority Date: 20241115

Claims (7)

1. The automatic door opening and closing system with the adjustable ball head electric limiter comprises a vehicle body piece, a vehicle door piece and a limiting arm, wherein one end of the limiting arm is rotationally connected with the vehicle body piece through a pin shaft, and the other end of the limiting arm is inserted into the vehicle door piece and can reciprocate.
2. The automatic door opening and closing system with the adjustable ball head electric limiter of claim 1, wherein the transmission part comprises a screw rod and a sliding sleeve penetrating the screw rod, one end of the screw rod is in rotary connection with the door part through a bearing and a bearing bracket, the other end of the screw rod is in rotary connection with the limiting arm through the sliding sleeve with a ball head joint, and when the screw rod rotates under the action of the driving part, the sliding sleeve slides back and forth on the screw rod, so that on one hand, the screw rod is lubricated through the sliding sleeve, on the other hand, the position of the sliding sleeve on the screw rod is changed, and the ball head joint on the sliding sleeve drives the limiting arm to synchronously act along with the rotation of the screw rod.
3. The automatic door opening and closing system with the adjustable ball head electric limiter of claim 1 or 2, wherein the driving part comprises a motor and a worm gear assembly, and the worm gear assembly is respectively connected with an output shaft of the motor and a screw rod in the transmission part, so that when the motor rotates, the motor drives the screw rod to rotate through the worm gear assembly, and power output and transmission are realized.
4. The automatic door opening and closing system with an adjustable ball-end electric limiter of claim 2, wherein when the screw rod is connected with the limiting arm through the sliding sleeve with the ball-end joint, a hemispherical groove is arranged at the end part of the limiting arm, an internal thread structure is arranged at the top of the groove, the ball-end joint is arranged in the hemispherical groove, the ball-end joint is connected with the sliding sleeve through the connecting shaft, the automatic door opening and closing system further comprises an opening clamping sleeve, the opening clamping sleeve comprises a top platform with internal threads and a base below the top platform, the base is provided with a hemispherical concave bottom surface and a cylindrical external thread surface, the opening clamping sleeve is embedded between the ball-end joint and the connecting shaft through a side opening of the opening clamping sleeve, the cylindrical external thread surface of the opening clamping sleeve is in threaded fit connection with the hemispherical groove at the end part of the limiting arm, and the threaded fastening degree between the clamping sleeve and the hemispherical groove at the end part of the limiting arm is adjusted through rotating the clamping sleeve, so that the connection tightness of the ball-end joint is controlled.
5. The automatic door opening and closing system with the adjustable ball head electric limiter of claim 3, wherein the motor is perpendicular to the screw rod, a worm in the worm gear and worm assembly is arranged on the motor, the worm wheel is arranged at the end part of the screw rod, power transmission is achieved between the motor and the screw rod through the worm gear and worm assembly, a lead angle between the worm and the worm wheel of the worm gear and worm assembly is larger than an equivalent friction angle, and therefore the worm and worm assembly does not have self-locking characteristic and can achieve clockwise or anticlockwise meshing rotation.
6. The automatic door opening and closing system with an adjustable ball head electric limiter of claim 4, wherein the screw is located above the limiting arm.
7. The automatic door opening and closing system with the adjustable ball head electric limiter of claim 1, further comprising a PCB circuit board provided with a control circuit or an MCU chip preset with a control program, wherein the control circuit is connected with the driving part through an electric signal, so that the driving part is controlled through the control circuit, and the driving part drives the transmission part to act through a control signal given by the control circuit, thereby realizing automatic door opening and closing.

Description

Automatic door opening and closing system with adjustable ball head electric limiter Technical Field The invention relates to the field of passenger cars, in particular to an intelligent control of a passenger car, and specifically relates to an automatic opening and closing system of a car door with an adjustable ball head electric limiter. Background As shown in fig. 1, a door stopper (simply referred to as a stopper) is a member for limiting in a connection structure of a door and a vehicle body, and is conventionally used mainly for limiting a maximum opening of the door. The limiting device comprises a vehicle body piece, a vehicle door piece and a limiting arm, wherein the limiting arm is rotationally connected with the vehicle body piece through a pin shaft, the other end of the limiting arm is inserted into the vehicle door piece, the vehicle door piece is fixed on a vehicle door, and an elastic part is arranged in the vehicle door piece to clamp the limiting arm, so that the opening and closing handfeel and the opening and closing position of the vehicle door are controlled. In recent years, two patent documents of publication No. CN113565377A, CN116163607a disclose two different types of electric stoppers, which are provided with an electric drive device (electric stoppers for short), and which control a transmission member by a drive member, so that a function of automatically opening and closing a door by the stopper is realized. However, in the conventional electric stoppers in, for example, the above two patent documents, there are the following problems: 1. The design adaptability of the transmission structure is poor, so that the production cost is increased, the iteration speed of the product cannot meet the requirement, such as the structure in CN116163607A, the design and the modeling matching of the motion curve of the limiting arm are required, and the electric control can be realized, and therefore, for different vehicle types and even different vehicle door opening requirements, the limiting arm is required to be independently researched and developed, and the subsequent manufacturing process is designed. 2. The transmission mechanism is complex in design, so that the whole electric limiting arm is large in structure, occupies more space and is poor in product reliability, such as a structure in CN113565377A, firstly, a group of transmission gears are required to be designed to adjust the speed ratio between a motor and a transmission rod, secondly, a gear box for fixing a transmission gear set is also required to be designed, finally, a screw rod serving as a transmission shaft is designed at the lowest part of the whole structure, when the electric limiting arm is used for a long time, moving parts, such as limiting arms which are opened and closed in a reciprocating mode, above the screw rod can generate fine chips, and the chips finally fall on the screw rod, so that the screw rod generates phenomena of clamping stagnation, noise and the like during working. In comparison with the above-mentioned drawbacks in structure and design, the present electric limiters do not support a purely mechanical opening manner, that is, when the driving component is disabled (for example, the driving component is powered off after the entire vehicle is powered off), the door cannot be opened by the application of force of a third party. Thus, when an accident occurs in the vehicle, the inside or outside personnel cannot open the door to escape quickly. As such, there are serious and fatal safety hazards. In view of the above, there are many drawbacks in the current electric limiters in practical use, so a new electric limiter for solving the above-mentioned problems needs to be proposed. Disclosure of utility model The invention aims to overcome the defects and provides the automatic opening and closing system of the vehicle door with the adjustable ball head electric limiter, which has the advantages of simple and compact structure, long service life and reliability. In order to achieve the above object, the present invention is achieved by: an automatic opening and closing system of a vehicle door with an adjustable ball head electric limiter comprises a vehicle body piece, a vehicle door piece and a limiting arm, wherein one end of the limiting arm is rotationally connected with the vehicle body piece through a pin shaft, the other end of the limiting arm is inserted into the vehicle door piece and can reciprocate, a driving part and a transmission part are arranged between the vehicle door piece and the limiting arm, and the transmission part is rotationally connected with the vehicle door piece and the limiting arm through pin shafts or ball head joints respectively, so that the transmission part drives the limiting arm to reciprocate in the vehicle door piece under the drive of the driving part, and the purpose of automatically opening and closing the vehicle door is achieved. Further, the tr