CN114718410A

CN114718410A - Novel electric side door opening driver of automobile

Info

Publication number: CN114718410A
Application number: CN202210313258.1A
Authority: CN
Inventors: 孙云飞; 唐森; 涂家鑫
Original assignee: Ningbo Huakai Electronic Technology Co ltd
Current assignee: Ningbo Huakai Electronic Technology Co ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-07-08

Abstract

A novel electric side door opening driver of an automobile comprises a shell, a motor assembly, a screw rod assembly and a push rod, wherein the shell can be arranged on an automobile side door; the motor component comprises an output shaft extending into the shell; the screw rod assembly is arranged in the shell and comprises a screw rod and a sliding block in threaded connection with the screw rod, and the screw rod is in transmission connection with the output shaft; the push rod can movably penetrate through the shell; the output shaft is vertical to the central shafts of the screw; the screw comprises an input end and an output end, a worm wheel is sleeved on the input end, and a worm is connected on the output shaft; the input end of the screw extends towards one side far away from the output end to form a damping part, and a damper assembly is arranged on the damping part in a matching way; the output shaft of the motor is perpendicular to the central shaft of the screw rod, the output shaft of the motor and the central shaft of the screw rod are in transmission through the matching of the worm gear and the worm, the vehicle door can be suspended even if the motor is powered off when the vehicle door is opened and closed, and the stability of the suspending function of the vehicle door is further improved due to the arrangement of the damper assembly.

Description

Novel electric side-opening driver of automobile

Technical Field

The invention relates to the technical field of automobile side doors, in particular to a novel automobile electric side door driver.

Background

The electric opening system of the automobile side door is also called an automobile electric door, generally called the electric door for short, and is used for electrically opening the automobile door through the combination of parts such as a door opening driver, an electric suction door lock, a radar, an ECU and the like which are arranged on the automobile door, and can open and close the automobile door without manual push-pull;

the existing driver used in an electric opening system of a side door of an automobile is generally formed by combining a motor and a screw rod, the screw rod of the screw rod is driven to rotate by the motor, then a sliding block of the screw rod can move relative to the screw rod, and then the sliding block of the screw rod is connected to the automobile body, or a push rod is added on the sliding block and then connected to the automobile body by the push rod, so that the electric opening and closing of the side door are realized;

in the existing scheme, the connection modes between the motor and the screw rod are mainly two; the first method comprises the following steps: the output shaft of the motor is directly and fixedly connected with the screw rod; and the second method comprises the following steps: the motor is in transmission connection with the screw rod through a reduction gear set and other components; in the two connection modes, the central shafts of the motor and the screw rod are the same axial line or are parallel; for example, chinese patent No. ZL201721730347.7 discloses: "a car door actuating mechanism, including outer casing, electrical machinery, reduction box, two-way overrun clutch and lead screw assembly, the outer casing is a hollow sleeve-shaped structure, position and connect with the first to connect the bulb on one axial end of the outer casing, the first connects the bulb and still connects to A position of the car; the motor, the reduction gearbox and the bidirectional overrunning clutch are respectively arranged in the shell, an input shaft of the reduction gearbox is connected with a power output shaft of the motor in a positioning way, and an output shaft of the reduction gearbox is connected with a driving wheel shaft of the bidirectional overrunning clutch in a meshing way; the screw rod assembly is provided with a screw rod extending along the axial direction of the shell and a nut arranged on the screw rod in a sliding manner, one shaft end of the screw rod is meshed and connected with a driven wheel shaft of the bidirectional overrunning clutch, and the nut is integrally connected with a second connecting ball head which is also connected to a door of an automobile; the automobile door driving mechanism has the advantages of simple and compact structure and low manufacturing cost, and can also improve the reliability of a system and reduce noise;

the drive mechanism for an automobile door mentioned in the above patent, however, has several problems as follows: firstly, according to the connection mode of the motor and the screw rod of the existing driver, when the motor is powered off accidentally during the opening and closing process of the vehicle door, the vehicle door cannot hover, so that the safety accident can be possibly caused by the fact that the vehicle door is closed involuntarily; secondly, the motor and the screw rod are on the same axis, so that the length of the whole driver is too long, and applicable vehicle types are few; thirdly, the transmission between the motor and the screw rod is realized by a reduction gear set, if the required transmission ratio is reached, the multi-stage transmission is needed, and the size of the driver is further increased.

Disclosure of Invention

In order to overcome the defects of the conventional electric side door driver of the automobile, the invention provides a novel electric side door driver of the automobile.

The technical scheme for solving the technical problem is as follows: a novel automotive power side opening door actuator comprising:

a housing mounted on a side door of an automobile;

the motor assembly comprises an output shaft extending into the shell;

the screw rod assembly is arranged in the shell and comprises a screw rod and a sliding block in threaded connection with the screw rod, and the screw rod is in transmission connection with the output shaft;

the push rod is movably arranged on the shell in a penetrating way, one end of the push rod is positioned in the shell and connected with the sliding block, and the other end of the push rod extends out of the shell;

the central shafts of the output shaft and the screw rod are vertical;

the screw comprises an input end and an output end, a worm wheel is sleeved on the input end, a worm is fixedly connected to the output shaft, and the motor assembly is matched with the worm wheel and the worm to drive the screw to rotate;

the input end of the screw extends towards one side far away from the output end to form a damping part, and a damper assembly is arranged on the damping part in a matching mode.

Further, the damper assembly comprises a damper shell, a plurality of clamping rings are fixed in the damper shell, a insection gasket and at least two friction plates are clamped between every two adjacent clamping rings, the friction plates are tightly attached to two sides of the insection gasket, the center of the insection gasket is meshed with the damping part, a damper cover is fixed in the damper shell through internal threads, and a wave spring is arranged between the clamping ring of the damper cover and the damper cover.

Still further, the input of screw rod and the damping portion that extends all seted up the spline on, worm wheel and insection gasket all through with the meshing of spline to the realization is connected on the screw rod.

Further, the casing comprises transmission fixing base and drive fixing base, screw rod, guide bar and push rod all wear to establish transmission fixing base in, wherein one end of push rod is passed drive fixing base in order to realize stretching out to the casing outside, just the input of screw rod stretches into extremely drive fixing base in, motor element fixed connection be in the below of drive fixing base, just motor element's output shaft also stretches into extremely drive fixing base in, worm and worm wheel all are located drive fixing base in.

Furthermore, the damper assembly is located in the driving fixing seat, and a detachable adjusting cover is arranged on the driving fixing seat.

And furthermore, the adjusting cover is taken down, and the damper assembly is exposed out of the driving fixing seat, so that the damper assembly can be adjusted.

Furthermore, a guide rod penetrates through the shell, a shaft sleeve is fixedly connected to the sliding block, the shaft sleeve is sleeved on the guide rod in a sliding mode, and the guide rod is parallel to the central shafts of the screw rod and the guide rod.

Furthermore, the central axes of the screw rod, the push rod and the guide rod are parallel to each other and are positioned on the same plane, and the central axis of the output shaft is parallel to the plane and is vertical to the central axes of the screw rod, the push rod and the guide rod.

Furthermore, a through hole for the push rod to extend out is formed in the shell, a corrugated sealing pipe is further arranged at the position of the through hole in the shell, one end of the corrugated sealing pipe is connected to the inner side of the through hole and completely covers the through hole, and the other end of the corrugated sealing pipe is fixedly connected to one end, extending out of the shell, of the push rod.

Further, motor element includes motor housing and motor, motor housing in be located the below of motor still has set gradually flexible glue support, PCB board and hou gai, the PCB board fixation clamp is established flexible glue support and hou gai between, the PCB board with the motor link mutually, just motor element still includes an electric wire, wherein one end of electric wire pass motor housing and hou gai with PCB board link mutually, the other end is provided with electric plug connector.

Furthermore, one end of an output shaft of the motor extends into the shell and is used for driving the screw rod, the other end of the output shaft of the motor extends towards the inside of the shell of the motor, a permanent magnet is fixedly sleeved in the shell, and a Hall element used for sensing the permanent magnet is arranged on the PCB.

Furthermore, the push rod extends out of one end of the shell and is rotatably connected with a mounting bracket used for being connected with an automobile body.

The driving method of the invention: the motor drive worm drives the worm wheel to rotate, the worm wheel drives the screw rod to rotate synchronously through spline coupling, the screw rod is matched with the slider in a thread mode, the screw rod converts the rotary motion into the linear motion of the slider and generates axial force, the axial force acts on the push rod simultaneously to enable the push rod to move linearly synchronously, the push rod acts on the connecting part of the mounting bracket and the automobile body through the linear motion, the automobile body generates a reaction force at the moment, the reaction force acts on the automobile door along a driver, and because the reaction force does not pass through the rotation center of the automobile door, a force arm exists between the reaction force and the rotation center of the automobile door, the rotation moment can be generated, and the driven automobile door is automatically opened or closed.

The invention has the beneficial effects that:

1. the output shaft of the motor is perpendicular to the central shaft of the screw rod, transmission is realized by the matching of the worm gear and the worm, and hovering of the vehicle door can be realized even if the motor is powered off when the vehicle door is opened and closed by the aid of the self-locking characteristic of the worm gear and the worm transmission, so that safety accidents are avoided, and the stability of the hovering function of the vehicle door can be further improved due to the arrangement of the damper assembly;

2. the damper component is arranged on the damping part on the screw rod, so that the damper component is adjacent to the worm gear structure, the two structures are mainly used when the vehicle door is suspended, and the stability of the vehicle door in suspension can be further improved when the two structures are adjacent;

3. the central shafts of the motor output shaft and the screw rod are mutually vertical, compared with the design that the original motor and the screw rod are positioned on the same axis, the length of the driver is obviously reduced, and the output shaft and the screw rod are driven by the worm gear, so that the transmission ratio is large, the structure is compact, the size of the driver is further reduced, and the driver can be suitable for vehicle doors of various models;

4. the corrugated sealing pipe is arranged at the through hole on the shell through the push rod, so that dust, broken stones and the like can be effectively prevented from entering the shell, the normal operation of the screw rod is prevented from being influenced, the corrugated sealing pipe can stretch out and draw back along with the push rod in the moving process of the push rod, and the sealing assembly is prevented from falling off from the push rod after the push rod is used for a period of time;

5. in the motor component, a permanent magnet is further fixed at the other end of the motor output shaft, and a Hall element for sensing the permanent magnet is correspondingly arranged on the PCB, so that the rotating parameter of the output shaft of the sensing motor is fed back to a main electric control system of the automobile, and the opening and closing of the automobile door is better controlled.

Drawings

Fig. 1 is a schematic view of the mechanism of the present invention.

Fig. 2 is an exploded schematic view of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is a schematic view of the internal structure of the present invention.

Figure 5 is an exploded schematic view of the damper assembly of the present invention.

Figure 6 is a cross-sectional view of the damper assembly of the present invention.

Figure 7 is a cross-sectional view of the motor assembly of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that, although the terms upper, middle, lower, top, end, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another for ease of understanding, and are not used to define any directional or sequential limitations.

Examples

With reference to fig. 1 to 7, a novel electric side door driver for an automobile comprises a housing 1, a motor assembly 2, a screw rod assembly and a push rod 6, wherein the housing 1 can be mounted on a side door of the automobile; the motor component 2 comprises an output shaft 3 extending into the shell 1; the screw rod assembly is arranged in the shell 1 and comprises a screw rod 4 and a sliding block 5 which is in threaded connection with the screw rod 4, and the screw rod 4 is in transmission connection with the output shaft 3; the push rod 6 can movably penetrate through the shell 1, one end of the push rod 6 is positioned in the shell 1 and connected with the slide block 5, and the other end of the push rod 6 extends out of the shell 1; the output shaft 3 is vertical to the central shafts of the screw rods 4; the screw rod 4 comprises an input end 7 and an output end 8, a worm wheel 9 is sleeved on the input end 7, a worm 10 is fixedly connected to the output shaft 3, and the motor component 2 is matched with the worm 10 through the worm wheel 9 to drive the screw rod 4 to rotate; the input end 7 of the screw rod 4 extends towards the side far away from the output end 8 to form a damping part 11, and a damper assembly 12 is arranged on the damping part 11 in a matching mode.

In this embodiment, the damper assembly 12 includes a damper housing 13, a plurality of snap rings 14 are fixed in the damper housing 13, and a insection gasket 15 and at least two friction plates 16 are further clamped between two adjacent snap rings 14, the friction plates 16 are tightly attached to two sides of the insection gasket 15, the center of the insection gasket 15 is engaged with the damping portion 11, a damper cover 17 is fixed in the damper housing 13 through an internal thread, and a wave spring 18 is further disposed between the snap ring 14 close to the damper cover 17 and the damper cover 17.

In this embodiment, the input end 7 of the screw rod 4 and the extended damping portion 11 are both provided with splines 19, and the worm wheel 9 and the corrugated gasket 15 are engaged with the splines 19 to be connected to the screw rod 4.

In this embodiment, the casing 1 comprises transmission fixing base 20 and drive fixing base 21, screw rod 4, guide bar 23 and push rod 6 all wear to establish transmission fixing base 20 in, one of them one end of push rod 6 passes drive fixing base 21 in order to realize stretching out to the casing 1 outside, just input 7 of screw rod 4 stretches into to drive fixing base 21 in, motor element 2 fixed connection be in the below of drive fixing base 21, just output shaft 3 of motor element 2 also stretches into drive fixing base 21 in, worm 10 and worm wheel 9 all are located drive fixing base 21 in.

In this embodiment, the damper assembly 12 is located in the driving fixing seat 21, and a detachable adjusting cover 22 is disposed on the driving fixing seat 21.

In this embodiment, the damper assembly 12 can be adjusted by removing the adjustment cover 22 and exposing the damper assembly 12 from the driving holder 21.

In this embodiment, a guide rod 23 further penetrates through the housing 1, a shaft sleeve 24 is fixedly connected to the slider 5, the shaft sleeve 24 is slidably sleeved on the guide rod 23, and the guide rod 23 is parallel to the central axes of the screw rod 4.

In this embodiment, the central axes of the screw 4, the push rod 6 and the guide rod 23 are parallel to each other and are located on the same plane, and the central axis of the output shaft 3 is parallel to the plane and is perpendicular to the central axes of the screw 4, the push rod 6 and the guide rod 23.

In this embodiment, a through hole for the push rod 6 to extend out is formed in the housing 1, a corrugated sealing pipe 25 is further arranged at the through hole in the housing 1, one end of the corrugated sealing pipe 25 is connected to the inner side of the through hole and completely covers the through hole, and the other end of the corrugated sealing pipe 25 is fixedly connected to one end of the push rod 6 extending out of the housing 1.

In this embodiment, motor element 2 includes motor housing 26 and motor 27, motor housing 26 in be located motor 27's below still has set gradually soft glue support 28, PCB board 29 and hou gai 30, PCB board 29 fixation clamp is established soft glue support 28 and hou gai 30 between, PCB board 29 with motor 27 link mutually, just motor element 2 still includes an electric wire 31, wherein one end of electric wire 31 pass motor housing 26 and hou gai 30 with PCB board 29 link mutually, the other end is provided with electric plug connector 32.

In this embodiment, one end of the output shaft 3 of the motor 27 extends into the casing 1 to drive the screw rod 4, the other end extends into the motor housing 26, and is fixedly sleeved with a permanent magnet 33, and the PCB 29 is provided with a hall element for sensing the permanent magnet 33.

In the present exemplary embodiment, the push rod 6 projects out of the housing 1 and is rotatably connected to a mounting bracket 34 for connection to the vehicle body.

The driving method of the embodiment: the motor 27 drives the worm 10 to drive the worm wheel 9 to rotate, the worm wheel 9 is connected with and drives the screw rod 4 to synchronously rotate through the spline 19, the screw rod 4 is matched with the sliding block 5 in a threaded mode, the screw rod 4 converts the rotating motion into the linear motion of the sliding block 5 and generates an axial force, the axial force is simultaneously applied to the push rod 6 to enable the push rod to synchronously linearly move, the push rod 6 applies the axial force to the joint of the mounting bracket 34 and the automobile body through the linear motion, at the moment, the automobile body generates a reaction force and applies the reaction force to the automobile door along the driver, and the reaction force does not pass through the rotating center of the automobile door, so that a force arm exists between the reaction force and the rotating center of the automobile door, so that the rotating moment can be generated, and the automobile door is driven to be automatically opened or closed.

When the motor 27 of the present embodiment is powered off: when the vehicle door is accidentally powered off in the opening and closing process of the motor 27, the worm wheel 9 and the worm 10 have a self-locking function, so that the rotation trend of the screw rod 4 can be prevented, the damper assembly 12 is further connected to the screw rod 4, the rotation of the screw rod 4 can be further prevented, the push rod 6 cannot be automatically retracted under the condition that the motor 27 is powered off, and the vehicle door can be hovered.

The advantages of this embodiment are: the door can realize stably hovering when the motor loses power, effectively avoids the emergence of incident, and the length and the volume of driver are all less relatively, can be applicable to the door of various models, and complete sealing device has then guaranteed the life-span of driver, and the control of this driver is also accurate quick more moreover.

The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but only protected by the patent laws within the scope of the claims.

Claims

1. A novel automotive power side opening door actuator comprising:

a case (1) mounted on a side door of an automobile;

the motor assembly (2) comprises an output shaft (3) extending into the shell (1);

the screw rod assembly is arranged in the shell (1) and comprises a screw rod (4) and a sliding block (5) in threaded connection with the screw rod (4), and the screw rod (4) is in transmission connection with the output shaft (3);

the push rod (6) is movably arranged on the shell (1) in a penetrating mode, one end of the push rod (6) is located in the shell (1) and connected with the sliding block (5), and the other end of the push rod (6) extends out of the shell (1);

the method is characterized in that: the output shaft (3) is vertical to the central shafts of the screw (4);

the screw rod (4) comprises an input end (7) and an output end (8), a worm wheel (9) is sleeved on the input end (7), a worm (10) is fixedly connected to the output shaft (3), and the motor component (2) is matched with the worm (10) through the worm wheel (9) to drive the screw rod (4) to rotate;

the input end (7) of the screw rod (4) extends towards one side far away from the output end (8) to form a damping part (11), and a damper assembly (12) is arranged on the damping part (11) in a matched mode.

2. The novel electric side door driver of the automobile as claimed in claim 1, wherein: damper subassembly (12) include a damper shell (13), a plurality of snap ring (14) of damper shell (13) internal fixation, and still press from both sides between two adjacent snap rings (14) and be equipped with a insection gasket (15) and two at least friction disc (16), friction disc (16) closely laminate in the both sides of insection gasket (15), the center of insection gasket (15) with damping portion (11) mesh mutually, damper shell (13) internal thread is fixed with a damper lid (17), is close to still be provided with a wave spring (18) between snap ring (14) and the damper lid (17) of damper lid (17).

3. The novel electric side door driver of the automobile as claimed in claim 1, wherein: casing (1) comprises transmission fixing base (20) and drive fixing base (21), screw rod (4), guide bar (23) and push rod (6) all wear to establish transmission fixing base (20) in, wherein one end of push rod (6) is passed drive fixing base (21) in order to realize stretching out outside casing (1), just input (7) of screw rod (4) stretch into to drive fixing base (21) in, motor element (2) fixed connection be in the below of drive fixing base (21), just output shaft (3) of motor element (2) also stretch into to drive fixing base (21) in, worm (10) and worm wheel (9) all are located drive fixing base (21) in.

4. The novel electric side door driver of the automobile as claimed in claim 1, wherein: the damper assembly (12) is located in the driving fixing seat (21), and a detachable adjusting cover (22) is arranged on the driving fixing seat (21).

5. The novel electric side door driver of the automobile as claimed in claim 1, wherein: a guide rod (23) is further arranged in the shell (1) in a penetrating mode, a shaft sleeve (24) is fixedly connected to the sliding block (5), the shaft sleeve (24) is sleeved on the guide rod (23) in a sliding mode, and the guide rod (23) is parallel to central shafts of the screw rod (4).

6. The novel electric side door driver of the automobile as claimed in claim 5, wherein: the central shafts of the screw rod (4), the push rod (6) and the guide rod (23) are parallel to each other and are positioned on the same plane, and the central shaft of the output shaft (3) is parallel to the plane and is perpendicular to the central shafts of the screw rod (4), the push rod (6) and the guide rod (23).

7. The novel electric side door driver of the automobile as claimed in claim 1, wherein: the utility model discloses a push rod sealing device, including casing (1), casing (1) is last to have seted up the confession through-hole that push rod (6) stretched out, lie in on casing (1) through-hole department still be provided with ripple sealed tube (25), wherein one end of ripple sealed tube (25) is connected the inboard of through-hole, and will the through-hole cover completely, the other end fixed connection of ripple sealed tube (25) is in push rod (6) stretch out to casing (1) one end outside.

8. The novel electric side door driver of the automobile as claimed in claim 1, wherein: motor element (2) include motor housing (26) and motor (27), motor housing (26) in be located the below of motor (27) still has set gradually flexible glue support (28), PCB board (29) and hou gai (30), PCB board (29) fixation clamp is established flexible glue support (28) and hou gai (30) between, PCB board (29) with motor (27) electric link mutually, just motor element (2) still include an electric wire (31), wherein one end of electric wire (31) pass motor housing (26) and hou gai (30) with PCB board (29) electric link mutually, the other end is provided with electric plug connector (32).

9. The novel electric side door driver of an automobile as claimed in claim 8, wherein: wherein one end of an output shaft (3) of the motor (27) extends into the shell (1) to drive the screw rod (4), the other end of the output shaft extends towards the inside of the motor shell (26) and is fixedly sleeved with a permanent magnet (33), and a Hall element used for sensing the permanent magnet (33) is arranged on the PCB (29).

10. The novel electric side door driver of the automobile as claimed in claim 1, wherein: the push rod (6) extends out of one end of the shell (1) and is rotatably connected with a mounting bracket (34) used for being connected with an automobile body.