CN216588233U

CN216588233U - Side door driving mechanism

Info

Publication number: CN216588233U
Application number: CN202122799277.3U
Authority: CN
Inventors: 杨琪; 沈宝良
Original assignee: Ningbo Xintai Machinery Co Ltd
Current assignee: Ningbo Xintai Machinery Co Ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-05-24
Anticipated expiration: 2031-11-16

Abstract

The utility model relates to the technical field of automobile doors, in particular to a side door driving mechanism which comprises a motor, a screw rod pair, a transmission gear and a push rod, wherein the motor is connected with the screw rod pair; the motor and the screw rod pair are arranged on the vehicle door in parallel, and the end parts of the motor and the screw rod pair are in transmission connection through a transmission gear; one end of the push rod is connected with the output end of the screw rod pair, the other end of the push rod is hinged with a vehicle body support fixed on a vehicle door, and the axis of the hinged shaft is collinear with the axis of the hinged shaft. The scheme can conveniently realize the opening and closing of the vehicle door, and has simple structure and reliable function; the volume is small, and the installation is convenient; the running noise is low; the control precision is high.

Description

Side door driving mechanism

Technical Field

The utility model relates to the technical field of automobile doors, in particular to a side door driving mechanism.

Background

Along with the automatic and intelligent development of automobiles, the demand of an automatic door opening and closing mechanism of the automobiles is more and more large, the automobile using experience of users is greatly improved, and the convenience of the users is enhanced. The mechanism has high practicability, realizes automatic opening and closing of the automobile door, and brings convenience for people to go out. Meanwhile, the damage to the car door caused by collision with other obstacles in the door opening and closing process or the injury to people caused by clamping hands/feet of the people are avoided; abnormal conditions such as the door not being closed in place.

At present, an electric vehicle door mechanism is also available, a zipper/rack/hinge shaft/orthogonal worm and gear type is mostly adopted, and the electric vehicle door mechanism has more parts, complicated structure and larger occupied space. The manual force for opening and closing the door can not meet the requirement (larger/smaller), or the hovering on the up/down/side slope can not be realized, and the like. The barrier can not be effectively detected or the anti-pinch function is realized, and an intelligent manual mode is not available: namely the manual state: the door is slowly opened and closed, and the manual force is light; intelligent car door driving mechanisms such as a quick door opening and closing mechanism, a tail door follow-up automatic switch mechanism and the like.

In addition, because the space of the vehicle door is limited, a vehicle door driving mechanism with smaller volume and convenient installation needs to be designed.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a side door driving mechanism in order to solve the problems of the related art.

In order to solve the problems of the prior art, the utility model adopts the technical scheme that:

a side door driving mechanism comprises a motor, a screw rod pair, a transmission gear and a push rod; the motor and the screw rod pair are arranged on the vehicle door in parallel, and the end parts of the motor and the screw rod pair are in transmission connection through a transmission gear; one end of the push rod is connected with the output end of the screw rod pair, the other end of the push rod is hinged with a vehicle body support fixed on a vehicle door, and the axis of the hinged shaft is collinear with the axis of the hinged shaft.

Preferably, realize through hinge assembly articulated, hinge assembly is including seting up the mounting hole at the push rod tip, passing the mounting hole and both ends and automobile body support rotate the round pin axle screw of being connected, set up the lock nut who is used for locking round pin axle screw at the push rod opposite side.

Preferably, the hinged part of the vehicle body support and the push rod is further provided with a joint bearing, and the joint bearing is limited through a second check ring.

Preferably, the screw pair comprises a screw rod installed on the vehicle door and a screw nut in threaded connection with the screw rod, and a guide device used for limiting the movement of the screw nut along the axial direction of the screw rod is arranged at the position of the screw nut.

Preferably, the motor, the screw pair, the transmission gear and the push rod are externally provided with a shell fixed with the motor, the screw pair, the transmission gear and the push rod, the shell is provided with a through hole for the end part of the push rod to extend out, and the shell is fixed on a vehicle door.

Preferably, motor one end is provided with circuit assembly, motor cushion and motor spacer bush, and circuit assembly is connected to motor one end, connects gradually the motor cushion, and motor spacer bush, the other end of motor are equipped with the reduction gear, and there is the internal spline output reduction gear inside to connect the motor shaft, and the motor is rotatory to be transmitted to the motor shaft through the reduction gear to make the motor shaft rotatory.

Preferably, the motor shaft be equipped with the seal ring groove to be equipped with first sealing washer, the centre is equipped with the spline and links to each other with first drive gear, the tip is equipped with the spacing step of bearing to link to each other with first bearing, the motor shaft is connected with the stopper, the stopper be equipped with the draw-in groove and be connected with the casing, casing tip and casing lid link to each other through location tang and connecting screw, fasten casing and casing lid, the casing lid is equipped with the seal ring groove, assembles the second sealing washer.

Preferably, the transmission gear comprises a first transmission gear, a second transmission gear and a third transmission gear, the first transmission gear transmits the third transmission gear through the second transmission gear after rotating and transmits the third transmission gear to the lead screw, so that the lead screw generates rotary motion, the lead screw is sequentially provided with bearing steps to be connected with a second bearing, a spline is arranged to be connected with the third transmission gear, a sealing ring groove is arranged to be connected with a third sealing ring, threads are arranged in the middle of the lead screw and connected with a lead screw nut, a threaded part is arranged in the lead screw nut, a pin shaft is arranged to be connected with a push rod, and a stopping mechanism is arranged on the pin shaft.

Preferably, the other end of the screw rod is provided with a bearing step, the bearing step is connected with a third bearing, the first retainer ring is sequentially connected with the third bearing, the third bearing is fixed on the shell through a bearing block and a bearing cushion block, a sealing gasket is sequentially arranged among the shell, the bearing block and the mounting seat, the sealing gasket is provided with a sealing lip and is sealed with the push rod, and the lower part of the sealing gasket is provided with a wire harness sealing structure.

Preferably, the driving mechanism further comprises a brake, the brake is electrically connected with the ECU controller, and the ECU controller is electrically connected with the vehicle door sensor.

Compared with the prior art, the beneficial effect of this application is:

1. realize the automatic switching of car door.

2. The structure is simple, and the function is reliable; the volume is small, and the installation is convenient; the running noise is low.

3. The support is arranged at the position of the connecting vehicle body, and the joint bearing is arranged between the support and the driving mechanism push rod, so that the rotation axis of the driving mechanism support is always parallel to the hinge axis in the door opening and closing process of the vehicle door, and meanwhile, the mounting precision of the driving mechanism is also reduced.

4. The driving mechanism is provided with the damper, so that when the motor reducer is disconnected (the clutch is disconnected), the consistency of internal resistance of the driving mechanism is ensured in the manufacturing process of the driving mechanism, namely, the consistency of a manual opening and closing door force value, a product function and the like is ensured.

5. And the vehicle door can hover under all working conditions under the extreme working conditions of flat, upper, lower, side slope and the like.

6. The intelligent detection barrier or prevent pressing from both sides the function, avoid the switch door in-process to appear colliding other barriers, damage the door, or press from both sides personnel's hand/foot etc. and cause personnel's injury.

7. Realize electronic automatic switch car door, manual state: the door is slowly opened and closed, and the manual force is light; intelligent vehicle door driving mechanisms such as a quick door opening and closing mechanism, a tail door follow-up automatic opening and closing mechanism and the like.

Drawings

FIG. 1 is a schematic view of a door drive mechanism installation location;

fig. 2 is an internal structure view of the door drive mechanism.

The reference numbers in the figures are:

1. the device comprises a circuit assembly, a motor cushion, a motor, a speed reducer, a motor shaft, a brake, a first sealing ring, a first transmission gear, a housing, a second sealing ring, a housing, a second sealing ring, a connecting screw, a housing cover, a first bearing, a first sealing ring, a second transmission gear, a first transmission gear, a second transmission gear, a housing, a second sealing ring, a housing cover, a first bearing, a second bearing, a first sealing ring, a second sealing ring, a third sealing ring, a bearing, a third sealing ring, a mounting seat, a second sealing ring, a third sealing ring, a mounting seat, a fixing screw, a first retaining ring, a second retaining ring, a third retaining ring and a third bearing, a second retaining ring, a third bearing, a mounting seat and a mounting seat; 36. a third transmission gear;

101. door, 102, drive mechanism, 103, body support, 104, body, 105, ECU controller, 106, door sensor, 107, hinge.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

As shown in fig. 1, the door driving mechanism is fixed to the middle of the door 101 near the hinge 107, i.e., at the original door stopper position. In an electric working condition, when the door driving mechanism 102 receives a door opening/closing signal from the ECU controller 105, the internal motor 3 starts to operate, and the internal signal is transmitted to the screw rod 17 to rotate through the driving mechanism 102, so as to push the screw rod nut 19 to move linearly, thereby generating a pushing/pulling force on the push rod 21. The door drive mechanism 102 is fixed to the door, the body bracket 103 is fixed to the body, and the push rod 21 extends and contracts to electrically open and close the door 101.

As shown in fig. 2, one end of the motor 3 is connected with the circuit assembly 1, and is sequentially connected with the motor rubber mat 2 and the motor distance sleeve 36. The other end is equipped with reduction gear 4, and reduction gear 4 is inside to have the internal spline output, connects motor shaft 5, and motor 3 is rotatory to be transmitted to motor shaft 5 through reduction gear 4 to make motor shaft 5 rotatory. The motor shaft 5 is connected to the brake 6, and an output voltage is applied to the brake 6 through the ECU controller 105, so that the brake 6 generates a braking torque, thereby changing the internal resistance of the mechanism. Motor shaft 5 is equipped with the seal ring groove, is equipped with first sealing washer 7, and the centre is equipped with the spline and links to each other with first drive gear 8, and the tip is equipped with the spacing step of bearing, links to each other with first bearing 13. The brake 6 is provided with a clamping groove to be connected with the shell 9, the end part of the shell 9 is connected with the shell cover 12 through a positioning spigot and a connecting screw 11, the shell 9 is fastened with the shell cover 12, and the shell cover 12 is provided with a sealing ring groove to be assembled with a second sealing ring 10. The transmission gear comprises a first transmission gear 8, a second transmission gear 14 and a third transmission gear 36, the first transmission gear 8 rotates and then transmits the third transmission gear 36 to the lead screw 17 through the second transmission gear, so that the lead screw 17 generates rotary motion, the lead screw 17 is sequentially provided with bearing steps to be connected with the second bearing 16, a spline is arranged to be connected with the third transmission gear 36, and a sealing ring groove is arranged to be connected with the third sealing ring 18. The middle of the screw rod is provided with threads which are connected with a screw rod nut 19, the screw rod nut 19 is internally provided with a threaded part, a pin shaft 20 is arranged and connected with a push rod 21, and the pin shaft 20 is provided with a stopping mechanism for preventing the pin shaft from withdrawing. The rotary motion of the screw 17 is transmitted to the screw nut 19, and the screw nut 19 guides the block to move along the axial direction of the screw 17, so that the push rod 21 is pushed and pulled. The push rod 21 is connected with the pin shaft 20 and can also rotate to adjust the included angle between the push rod and the vehicle door. The other end of the screw rod 17 is provided with a bearing step, is connected with the third bearing 23, and is sequentially connected with a first retainer ring 29 to fix the third bearing 23. The third bearing 23 is fixed on the shell 9 through a bearing seat 22 and a bearing cushion block 25, sealing

gaskets

24 and 26 are sequentially arranged among the shell 9, the bearing seat 22 and the mounting seat 27, the sealing gasket 26 is provided with a sealing lip to seal with the push rod 21, and the lower part of the sealing gasket is provided with a wiring harness sealing structure to ensure the sealing function. The push rod 21 is provided with a limiting mechanism, and the maximum stroke is limited with the edge of the mounting seat 27 when the push rod extends out to the maximum. The other end of the push rod 21 is connected with a joint bearing 33, the limit is carried out through a second retainer ring 34, the middle of the joint bearing 33 is connected with a vehicle body bracket 32, the vehicle body bracket 32 is connected with a vehicle body, and one end of the push rod 21 is fixed. The mounting seat 27 is connected with a fixing screw 28 to fix the driving mechanism 102 to the vehicle door, the push rod 21 extends and retracts, and the vehicle body bracket 32 is connected with the vehicle body to drive the vehicle door 101 to rotate and electrically open and close.

Electric working condition: when the door driving mechanism assembly 102 receives a control signal to electrically open/close the door, the motor 3 is powered on to start to operate, and the first transmission gear 8 rotates through the motor shaft 5 connected with the speed reducer 4 and is transmitted to the screw rod 17 to rotate, the screw rod 17 is provided with a screw nut, so that the screw motion of the screw rod 17 is converted into the linear motion of the screw nut 19, and the pull rod 21 is pushed and pulled, so that the door assembly is opened/closed.

Manual working conditions: the power signal of the motor 3 is kept disconnected with the power supply of the whole vehicle, and the vehicle door sensor 106 can detect whether the vehicle door is manually opened or closed or not and whether the vehicle door is opened or closed or not. The details are as follows:

1. when the person does not perform manual opening and closing of the door, the door sensor 106 detects the manual opening and closing of the door. When the vehicle door assembly 101 automatically falls/opens under the limit working condition (ascending/descending), the ECU controller 102 outputs proper voltage through algorithm calculation to control the braking torque of the brake 6, the brake 6 is connected with the motor shaft 5, and the internal resistance of the driving mechanism is increased, so that the vehicle door is prevented from automatically falling/opening/closing. On the contrary, in the normal state, when the door sensor 106 does not detect the opening/closing of the door, the friction component inside the brake 6 is disconnected, so that the internal resistance of the driving mechanism 102 is reduced, and the electronic control adjustment of the internal resistance of the driving mechanism 102 is realized.

2. When the person performs manual opening and closing of the door, the door sensor 105 detects the manual opening and closing of the door as follows:

firstly, following: when the door sensor 106 detects the rapid manual opening/closing of the door, the ECU controller 105 sends an automatic opening/closing signal in the same direction as that in which the door assembly 101 is operated by a person, so that the door driving mechanism 102 performs electric opening/closing.

② very light manual operating force: when the door sensor 106 detects slow manual opening and closing of the door, the ECU controller 105 issues a clutch 3 off signal so as to maintain a light slow manual operation force.

In addition, a barrier detection sensor is arranged in/out of the vehicle door, and the barrier is detected in advance in the opening/closing process of the vehicle door assembly. Prevent the operator or other obstacles from being hit/pinched, causing injury to the operator or damage to the vehicle door. The ECU controller 105 detects the current flowing through the motor 3 in the door drive mechanism 102, and thereby estimates the door collision/pinching.

The above examples, which are intended to represent only one or more embodiments of the present invention, are described in greater detail and with greater particularity, and are not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims

1. A side door driving mechanism is characterized by comprising a motor, a screw rod pair, a transmission gear and a push rod;

the motor and the screw rod pair are arranged on the vehicle door in parallel, and the end parts of the motor and the screw rod pair are in transmission connection through a transmission gear; one end of the push rod is connected with the output end of the screw rod pair, the other end of the push rod is hinged with a vehicle body support fixed on a vehicle door, and the axis of the hinged shaft is collinear with the axis of the hinged shaft.

2. The side door driving mechanism according to claim 1, wherein the hinge assembly is used for hinge connection, and the hinge assembly comprises a mounting hole formed in the end of the push rod, a pin bolt passing through the mounting hole and having two ends rotatably connected with the body frame, and a lock nut arranged on the other side of the push rod for locking the pin bolt.

3. The side door driving mechanism according to claim 2, wherein a joint bearing is further arranged at the hinged position of the body support and the push rod, and the joint bearing is limited by a second retaining ring.

4. The side door driving mechanism of claim 1, wherein the screw pair comprises a screw rod mounted on the door, a screw nut threadedly connected to the screw rod, and a guide device disposed at the screw nut for limiting the movement of the screw nut along the axial direction of the screw rod.

5. The side door driving mechanism according to claim 1, wherein the motor, the screw pair, the transmission gear and the push rod are externally provided with a shell fixed with the motor, the screw pair, the transmission gear and the push rod, the shell is provided with a through hole for the end part of the push rod to extend out, and the shell is fixed on the door.

6. The side door driving mechanism according to any one of claims 1 to 5, wherein the driving mechanism further comprises a brake, the brake is electrically connected to the ECU controller, and the ECU controller is electrically connected to the door sensor.

7. The side door driving mechanism according to claim 1, wherein a circuit assembly, a motor rubber pad and a motor spacer are arranged at one end of the motor, the circuit assembly is connected to one end of the motor, the motor rubber pad and the motor spacer are sequentially connected, a speed reducer is arranged at the other end of the motor, an internal spline output is arranged inside the speed reducer and is connected with the motor shaft, and the rotation of the motor is transmitted to the motor shaft through the speed reducer, so that the motor shaft rotates.

8. The side door driving mechanism as claimed in claim 6, wherein the motor shaft is provided with a sealing ring groove and is assembled with a first sealing ring, the middle of the motor shaft is provided with a spline to be connected with the first transmission gear, the end part of the motor shaft is provided with a bearing limiting step and is connected with the first bearing, the motor shaft is connected with a brake, the brake is provided with a clamping groove to be connected with the shell, the end part of the shell is connected with the shell cover through a positioning spigot and a connecting screw to fasten the shell and the shell cover, and the shell cover is provided with a sealing ring groove to be assembled with a second sealing ring.

9. The side door driving mechanism according to claim 8, wherein the transmission gears comprise a first transmission gear, a second transmission gear and a third transmission gear, the first transmission gear transmits the third transmission gear through the second transmission gear and transmits the third transmission gear to the lead screw to enable the lead screw to rotate, the lead screw is sequentially provided with a bearing step connected with the second bearing, a spline connected with the third transmission gear is provided, a sealing ring groove connected with a third sealing ring is provided, a thread is arranged in the middle of the lead screw and connected with a lead screw nut, a threaded part is arranged in the lead screw nut, a pin shaft connected with a push rod is provided, and the pin shaft is provided with a stopping mechanism.

10. The side door driving mechanism according to claim 1, wherein the other end of the screw rod is provided with a bearing step, the screw rod is connected with a third bearing, the third bearing is sequentially connected with a first retainer ring and is fixed on the third bearing, the third bearing is fixed on the shell through a bearing seat and a bearing cushion block, a sealing gasket is sequentially arranged among the shell, the bearing seat and the mounting seat, the sealing gasket is provided with a sealing lip to seal with the push rod, and the lower part of the sealing gasket is provided with a wiring harness sealing structure.