阅读说明：本技术 一种电动车门限位器 (Electric vehicle door limiter ) 是由 不公告发明人 于 2021-08-11 设计创作，主要内容包括：一种电动车门限位器,包括机体外壳,所述机体外壳内设置有电机、齿轮传动机构、丝杆传动机构以及驱动臂,所述电机固定设置在所述机体外壳内部,所述丝杆机构包括丝杆以及丝杆螺母,所述丝杆可转动地设置在所述机体外壳内部,所述丝杆螺母套设在所述丝杆上,所述驱动臂的末端与所述丝杆螺母固定连接,所述丝杆与所述电机平行设置,同时所述电机的作用端通过齿轮传动机构与所述丝杆连接；本方案设计的一种电动车门限位器,采用梯形丝杆传动方案,实现旋转运动转化成直线运动,丝杆螺母的直线运动带动驱动臂运动,电机与梯形丝杆螺母平行布置,结构更加紧凑,有利于空间的充分利用。(An electric vehicle door limiter comprises a machine body shell, wherein a motor, a gear transmission mechanism, a screw rod transmission mechanism and a driving arm are arranged in the machine body shell, the motor is fixedly arranged in the machine body shell, the screw rod mechanism comprises a screw rod and a screw rod nut, the screw rod is rotatably arranged in the machine body shell, the screw rod nut is sleeved on the screw rod, the tail end of the driving arm is fixedly connected with the screw rod nut, the screw rod is arranged in parallel with the motor, and meanwhile, the action end of the motor is connected with the screw rod through the gear transmission mechanism; the electric vehicle door limiter adopts a trapezoidal screw rod transmission scheme, realizes that rotary motion is converted into linear motion, the linear motion of the screw rod nut drives the driving arm to move, and the motor and the trapezoidal screw rod nut are arranged in parallel, so that the structure is more compact, and the space is fully utilized.)

1. The utility model provides an electric motor car door stopper which characterized in that: including engine body shell, be provided with motor, gear drive, screw drive and actuating arm in the engine body shell, the motor is fixed to be set up inside the engine body shell, screw drive includes lead screw and screw-nut, the lead screw rotationally sets up inside the engine body shell, the screw-nut cover is established on the lead screw, the end of actuating arm with screw-nut fixed connection, the lead screw with motor parallel arrangement, simultaneously the effect end of motor pass through gear drive with the lead screw is connected.

2. The electric vehicle door check device of claim 1, wherein: the gear transmission mechanism comprises a first-stage gear, a second-stage gear and a third-stage gear, the first-stage gear is sleeved on an output shaft of the motor, the third-stage gear is sleeved on the end portion of the screw rod, the second-stage gear is located between the first-stage gear and the third-stage gear, meanwhile, the first-stage gear is meshed with the second-stage gear, and the second-stage gear is meshed with the third-stage gear.

3. The electric vehicle door check device of claim 1, wherein: the bottom in the machine body shell is provided with a guide groove, the bottom of the screw rod nut is provided with a guide block corresponding to the guide groove in shape, and the guide block is movably arranged in the guide groove.

4. The electric vehicle door check device of claim 3, wherein: and the bottom of the guide groove is also provided with an oil groove with the same length as the guide groove.

5. The electric vehicle door check device of claim 1, wherein: two bearings which are symmetrical left and right are arranged in the machine body shell, the two bearings are respectively arranged at the left end and the right end of the screw rod, and a flexible rubber ring is sleeved on the bearing shell which is close to the action end of the head of the driving arm.

6. The electric vehicle door check device of claim 5, wherein: the driving arm is characterized in that a positioning fixing block is arranged at the head action end of the driving arm, and the head action end of the driving arm penetrates through the positioning fixing block.

7. The electric vehicle door check device of claim 1, wherein: and the head end of the screw rod nut is provided with an elastic buffer block.

8. The electric vehicle door check device of claim 1, wherein: the motor is specifically a brush direct current motor.

9. The electric vehicle door checker according to claim 2, wherein: the action end of the motor is provided with a damper, and the damper is sleeved on an output shaft of the motor.

Technical Field

The invention belongs to the technical field of automobile part design, and particularly relates to an electric vehicle door limiter.

Background

The automobile is a common vehicle in people's life at present, and plays an irreplaceable role in the development of modern society. Today in the 21 st century, with the trend of automobile electromotion, intellectualization, networking and sharing from concept to application landing, people's demands for automobiles are not limited to travel tools, but bear the demands of various aspects related to travel such as navigation, consumption, entertainment and interaction, and become another ' intelligent center ' in life.

The automobile door has the following advantages that people have higher requirements on convenience and comfort of automobiles, in the field of automobile doors, various thoughts and thoughts are developed like spring bamboo shoots in the rainy season, such as scissor doors, eagle wing doors, side sliding doors and the like, however, the general structural design of the traditional automobile door stopper is single, the door needs to be opened and closed manually, abnormal sound can be generated due to damage of an internal structure after long-term use, the use experience of users is further influenced, and the requirements of electric operation, high quality and the like of automobile products in the current stage cannot be met.

Therefore, there is a need to design a door check for an electric vehicle to solve the above-mentioned problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide an electric vehicle door limiter.

In order to achieve the above objects and other related objects, the present invention provides the following technical solutions: the utility model provides an electric motor car door stopper, includes engine body shell, be provided with motor, gear, screw drive and actuating arm in the engine body shell, the motor is fixed to be set up inside the engine body shell, screw drive includes lead screw and screw-nut, the lead screw rotationally sets up inside the engine body shell, the screw-nut cover is established on the lead screw, the actuating arm terminal with screw-nut fixed connection, the lead screw with motor parallel arrangement, simultaneously the effect end of motor pass through gear with the lead screw is connected.

Preferably, gear drive includes one-level gear, secondary gear and tertiary gear, the one-level gear cover is established on the output shaft of motor, tertiary gear cover is established the tip of lead screw, the secondary gear is located between one-level gear and the tertiary gear, simultaneously one-level gear with the meshing of secondary gear, the secondary gear with the meshing of tertiary gear.

Preferably, the bottom of the machine body shell is provided with a guide groove, the bottom of the screw rod nut is provided with a guide block corresponding to the guide groove in shape, and the guide block is movably arranged in the guide groove.

Preferably, the bottom of the guide groove is provided with an oil groove with the same length as the guide groove.

Preferably, two bearings which are symmetrical left and right are arranged in the machine body shell, the two bearings are respectively arranged at the left end and the right end of the screw rod, and a flexible rubber ring is sleeved on the bearing shell which is close to the action end of the head of the driving arm.

Preferably, a positioning fixing block is arranged at the action end of the head of the driving arm, and the action end of the head of the driving arm penetrates through the positioning fixing block.

Preferably, the head end of the screw rod nut is provided with an elastic buffer block.

Preferably, the motor is a brush direct current motor.

Preferably, the action end of the motor is provided with a damper, and the damper is sleeved on the output shaft of the motor.

The structural features of the above solution are explained as follows:

the electric vehicle door limiter adopts a trapezoidal lead screw transmission scheme, a motor and a trapezoidal lead screw nut are arranged in parallel, rotary motion is converted into linear motion through gear box transmission, and the linear motion of the lead screw nut drives a driving arm to move.

The output shaft and the lead screw parallel placement of motor, the tip of motor output shaft carries out the coupling assembly through bolt and gear box, there is one-level gear in the gear box, secondary gear and tertiary gear, the rotatory torsion that the motor produced is further enlargied through the gear box, through one-level gear, secondary gear, the step-by-step transmission of tertiary gear, it is rotatory to drive the lead screw, at this moment, screw-nut is under the drive of lead screw, convert rotatory moment of torsion into the linear drive power along lead screw axial motion, meanwhile, the actuating arm passes through the actuating arm bolt fastening on screw-nut, thereby the actuating arm can carry out reciprocating motion along the lead screw axial.

The door is closed fast under the manual mode, the actuating arm receives from outside powerful impact force, if this part impact force can't be fast consumed away, will make the lead screw take place the plastic deformation, receive the impact many times after, take place irreversible plastic deformation or other parts damage even, in severe cases, can lead to electronic stopper function to lose, therefore, the guide way design in this scheme is a very effective solution, guide block through the profile modeling is straight reciprocating motion in the guide way, guarantee that the lead screw does not take place to warp, and then convert the impact force into driving motor smoothly, the gear box, the primary gear, the secondary gear, the rotatory required energy of parts such as tertiary gear.

When the guide block at the screw-nut lower extreme moves along the reciprocating linear motion of guide way, repeated friction can produce the abnormal sound noise of "creakga", must lubricate at the friction surface, however simple scribble one deck grease, during screw-nut reciprocating motion, lubricating grease will extrude the friction surface very fast, thereby cause the lubrication inefficacy, so set up one or more again on the tank bottom surface of guide way along the same oil groove of trend of guide way, when screw-nut's guide block reciprocating motion, the grease can be embedded into in the oil groove, repeatedly lubricate the friction surface, the wearing and tearing between the part that significantly reduces and the probability that the abnormal sound takes place.

The lead screw is fixed between two bearings, because of the manufacturing of part receives multiple factor influence, the accumulative error of its a plurality of parts, can lead to the lead screw to deviate with the depth of parallelism of the axle center of collective shell, and then in-process at screw-nut carries out reciprocating motion, produce unusual resistance or friction abnormal sound, for this reason, design the bearing of the one end of lead screw into the suspended state, wrap up flexible rubber ring in the outer lane of bearing promptly, when the accumulative error because of inside part precision produces influences the smooth-going operation of screw-nut, 360 floating intervals that its flexible rubber ring provided, effectively reduce NVH (noise, vibration and acoustic vibration roughness) value during electronic operation.

Because the length of actuating arm is longer, the condition of buckling or rocking probably appears when the motion, so set up the locating piece at the head end of actuating arm, the smoothness when guaranteeing the actuating arm and removing.

At screw-nut reciprocating motion's in-process, and when the door reached the maximum aperture, its screw-nut can bump with the bearing frame, if the impact force is too big, probably lead to the inside screw thread of screw-nut to produce the damage, consequently, at a flexible rubber buffer block of screw-nut's end face design, when bumping, can effectively absorb the percussion power, reduce the damage to other parts, and simultaneously, the design of buffer block just replaces the door guard action of ordinary door stopper.

The motor adopts a brush direct current motor, the tail end of the motor is provided with a Hall sensor, the rotating speed of the motor can be converted into a digital signal, the digital signal is transmitted to the vehicle door controller, the vehicle door controller identifies the telescopic running speed and the telescopic running direction of the driving arm through an algorithm, and the control and the detection of the closing angular speed and the opening and closing direction of the vehicle door are further realized.

The output shaft of the motor is provided with a damper, the mechanism utilizes the principle of a friction plate, stepless regulation and control of rotary damping force are realized by regulating the magnitude of forward pressure applied to the friction plate, the damper is of a conventional structure, a quantitative damping force value is provided for the electric limiter, and stepless opening degree control of the vehicle door can be realized under the working conditions of flat slope, +/-20% up-down slope and +/-10% side-down slope.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

the electric opening and closing of the car door are realized, and comfortable and convenient user experience is brought; the automobile door stopper is interchangeable with a traditional automobile door stopper, namely, the automobile door with the same shape can be compatible with the traditional automobile door stopper and the electric stopper, the development cost of the automobile door is low, and the automobile door stopper is suitable for large-scale popularization; the electric power-assisted manual opening and closing are convenient and fast; the gentle damping force of opening and closing the door improves user's use experience.

Drawings

Fig. 1 is a schematic view of an appearance structure of the stopper.

Fig. 2 is a schematic view of the internal structure of the stopper.

Fig. 3 is a sectional view of the structure of the housing.

Fig. 4 is a spatial arrangement perspective view of the electric side door opening mechanism.

In the above drawings, a machine body shell 1, a motor 2, a driving arm 3, a screw rod 4, a screw rod nut 5, a primary gear 6, a secondary gear 7, a tertiary gear 8, a guide groove 9, a guide block 10, an oil groove 11, a bearing 12, a flexible rubber ring 13, a positioning fixed block 14, an elastic buffer block 15, a damper 16, a vehicle door 17, a vehicle door hinge 18, an electric limiter 19 and a vehicle body 20.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to fig. 3. It should be understood that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which the product of the present invention is usually placed in when used, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, and a communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 3, an electric vehicle door limiter includes a body housing 1, a motor 2, a gear transmission mechanism, a lead screw transmission mechanism and a driving arm 3 are disposed in the body housing 1, the motor 2 is fixedly disposed inside the body housing 1, the lead screw transmission mechanism includes a lead screw 4 and a lead screw nut 5, the lead screw 4 is rotatably disposed inside the body housing 1, the lead screw nut 5 is sleeved on the lead screw 4, the end of the driving arm 3 is fixedly connected with the lead screw nut 5, the lead screw 4 is disposed in parallel with the motor 2, and meanwhile, the action end of the motor 2 is connected with the lead screw 4 through the gear transmission mechanism; the door hinge 18 connects the door to the vehicle body 20 and is rotatable about the axis of the hinge. The electric limiter 19 is fixed on the vehicle door 17 through bolts, the installation method is the same as the installation method of the conventional vehicle door limiter, the installation and fixing method belongs to the mature technology, and no further explanation is made here, at the moment, the vehicle door hinge 18, the electric limiter 19 and the vehicle body 20 form a mechanical triangle in a three-dimensional space, and when the driving arm 3 in the electric limiter 19 performs reciprocating linear operation, the vehicle door is driven to rotate around the axis of the hinge, so that the electric opening and closing function of the vehicle door is realized; the car door limiter adopts a trapezoidal lead screw transmission scheme, the motor 2 and the trapezoidal lead screw nut 5 are arranged in parallel, the transmission of the gear box is realized, the rotation motion is converted into the linear motion, and the linear motion of the lead screw nut 5 drives the driving arm 3 to move.

The preferred embodiment is as follows:

the gear transmission mechanism comprises a primary gear 6, a secondary gear 7 and a tertiary gear 8, wherein the primary gear 6 is sleeved on an output shaft of the motor 2, the tertiary gear 8 is sleeved on the end part of the screw rod 4, the secondary gear 7 is positioned between the primary gear 6 and the tertiary gear 8, meanwhile, the primary gear 6 is meshed with the secondary gear 7, and the secondary gear 7 is meshed with the tertiary gear 8; the output shaft of motor 2 is placed with lead screw 4 parallel, the tip of the output shaft of motor 2 carries out the coupling assembly through bolt and gear box, there is one-level gear 6 in the gear box, second grade gear 7 and tertiary gear 8, the rotatory torsion that motor 2 produced is further enlargied through the gear box, through one-level gear 6, second grade gear 7, tertiary gear 8's transmission step by step, it is rotatory to drive lead screw 4, at this moment, screw-nut 5 is under the drive of lead screw 4, convert rotatory moment of torsion into the linear drive power along 4 axial motion of lead screw, meanwhile, actuating arm 3 passes through 3 bolt fastening of actuating arm on screw-nut 5, thereby actuating arm 3 can carry out reciprocating motion along the 4 axial of lead screw.

A guide groove 9 is formed in the bottom of the machine body shell 1, a guide block 10 corresponding to the guide groove 9 in shape is arranged at the bottom of the lead screw nut 5, and the guide block 10 is movably arranged in the guide groove 9; the vehicle door is quickly closed in a manual mode, the driving arm 3 is subjected to strong impact force from the outside, if the part of the impact force cannot be quickly consumed, the screw rod 4 can generate plastic deformation, even irreversible plastic deformation or other parts damage after being impacted for many times, and in severe cases, the function of the electric limiter 19 can be lost, so that the design of the guide groove 9 in the scheme is an effective solution, the guide block 10 which is profiled can linearly reciprocate in the guide groove 9 to ensure that the screw rod 4 cannot deform, and the impact force can be smoothly converted into the energy required by the rotation of the parts such as the driving motor 2, the gear box, the primary gear 6, the secondary gear 7 and the tertiary gear 8.

The bottom of the guide groove 9 is also provided with an oil groove 11 with the same length as the guide groove 9; when the guide block 10 at the lower end of the screw nut 5 moves along the guide groove 9 to reciprocate linearly, repeated friction can generate 'creak' abnormal noise, the friction surface is required to be lubricated, however, a layer of grease is simply coated, during the reciprocating motion of the screw nut 5, the grease can be extruded out of the friction surface quickly, so that the lubrication failure is caused, one or more oil grooves 11 along the same trend of the guide groove 9 are formed in the groove bottom surface of the guide groove 9, when the guide block 10 of the screw nut 5 reciprocates, the grease can be embedded into the oil grooves 11, the friction surface is lubricated repeatedly, the abrasion among parts is greatly reduced, and the probability of the abnormal noise is reduced.

Two bearings 12 which are symmetrical left and right are arranged in the machine body shell 1, the two bearings 12 are respectively arranged at the left end and the right end of the screw rod 4, and a flexible rubber ring 13 is sleeved on the shell of the bearing 12 close to the action end of the head of the driving arm 3; the screw rod 4 is fixed between the two bearings 12, the processing and manufacturing of parts are influenced by various factors, the accumulated errors of a plurality of parts can cause the deviation of the parallelism of the screw rod 4 and the axis of the collective shell, and further, in the reciprocating motion process of the screw nut 5, abnormal resistance or friction abnormal sound is generated, therefore, the bearing 12 at one end of the screw rod 4 is designed to be in a suspension state, namely, the outer ring of the bearing 12 is wrapped by the flexible rubber ring 13, when the accumulated errors generated by the precision of internal parts influence the smooth running of the screw nut 5, the 360-degree floating interval provided by the flexible rubber ring 13 effectively reduces the NVH (noise, vibration and sound vibration roughness) value in electric running.

A positioning fixed block 14 is arranged at the head action end of the driving arm 3, and the head action end of the driving arm 3 penetrates through the positioning fixed block 14; because the length of actuating arm 3 is longer, the condition of buckling or rocking probably appears when the motion, so set up the locating piece at the head end of actuating arm 3, the smoothness when guaranteeing actuating arm 3 to remove.

The head end of the feed screw nut 5 is provided with an elastic buffer block 15; at 5 reciprocating motion's of screw-nut in-process, and when the door reached maximum aperture, its screw-nut 5 can bump with 12 seats of bearing, if the impact force is too big, probably lead to the inside screw thread of screw-nut 5 to produce the damage, consequently, at the terminal surface design flexible rubber buffer block of screw-nut 5, when bumping, can effectively absorb the percussion power, reduce the damage to other parts, and simultaneously, the design of buffer block just replaces the door guard action of ordinary car door stopper.

The motor 2 is specifically a brush direct current motor 2; the motor 2 selects the brush direct current motor 2, the Hall sensor arranged at the tail end of the brush direct current motor 2 can convert the rotating speed of the motor 2 into a digital signal, the digital signal is transmitted to the vehicle door controller, the vehicle door controller identifies the telescopic running speed and the telescopic running direction of the driving arm 3 through an algorithm, and the control and the detection of the closing angular speed and the opening and closing direction of the vehicle door are further realized.

The action end of the motor 2 is provided with a damper 16, and the damper 16 is sleeved on the output shaft of the motor 2; the output shaft of the motor 2 is provided with a damper 16, the mechanism utilizes the principle of a friction plate, stepless regulation and control of rotary damping force are realized by adjusting the magnitude of forward pressure on the friction plate, the damper 16 is of a conventional structure and provides a quantitative damping force value for the electric limiter 19, and stepless opening control of the vehicle door can be realized under the working conditions of flat slope, +/-20% up-down slope and +/-10% side-tipping.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.