WO2018205951A1

WO2018205951A1 - Actuator for use in vehicle door automatic suction apparatus and vehicle door automatic suction apparatus

Info

Publication number: WO2018205951A1
Application number: PCT/CN2018/086139
Authority: WO
Inventors: 邱湘淮; 杨清春; 龚红宇; 冯臣
Original assignee: 广东肇庆爱龙威机电有限公司
Priority date: 2017-05-12
Filing date: 2018-05-09
Publication date: 2018-11-15
Also published as: CN206722629U

Abstract

An actuator for use in a vehicle door automatic suction apparatus, comprising: a housing (1), a worm gear (3), the worm gear (3) being rotatably supported on a worm gear support shaft and can be driven to rotate by a driver apparatus, the worm gear support shaft being fixed on the housing (1); a reel (4), the reel (4) being transmissively connected to the worm gear (3); and a pullout cable (11), the pullout cable (11) being wrapped on the reel (4) and actuated by the reel (4). The actuator also comprises a clutch apparatus. The clutch apparatus is provided with a joining position for maintaining a drive chain of the actuator and a separating position for disconnecting the drive chain of the actuator.

Description

Actuator and door automatic suction device for automatic door suction device

Technical field

The present invention relates to an actuator for a door automatic suction device and a door automatic suction device having a corresponding actuator.

Background technique

The door automatic suction device, also known as the door automatic soft closing system or the electric suction system. The door automatic suction device allows the door to be gently closed, eliminating the need to use excessive force when closing the door. Existing door automatic suction devices generally include sensors, motors and actuators. The sensor can be detected by simply pushing the door up and the motor and actuator are activated to pull the door to the locked position.

However, current door suction devices have the following disadvantages: they are large in size and heavy in weight because they have to be driven by a large motor because of a small transmission ratio. In addition, the current door suction device does not provide a clutch mechanism, and thus the separation state of the transmission mechanism cannot be achieved, which is disadvantageous in certain cases.

Summary of the invention

It is an object of the present invention to provide an actuator for a door automatic suction device that is small in size, light in weight, and capable of achieving a clutch function.

According to the invention, an actuator for a door automatic suction device is provided, comprising:

case;

a worm wheel rotatably supported on the worm wheel support shaft and rotatable by a driving device, the worm wheel support shaft being fixed on the casing;

a reel capable of being connected to a worm gear drive;

Outputting a cable that is wound around the wire wheel and actuated by the wire wheel;

The actuator further includes a clutch device having a disengaged position that maintains an engaged position of the actuator's drive train and disconnects the actuator's drive train.

The actuator according to the invention not only realizes the clutch function, but also has the advantages of small size, light weight and the like.

According to a preferred embodiment, in the disengaged position of the clutch device, the connection between the reel and the worm wheel is broken, and in the engaged position of the clutch device, the reel is drivingly coupled to the worm gear. Preferably, the clutch device includes a clutch that is disposed between the wire wheel and the worm gear. Preferably, the clutch member has a multi-head nut structure that mates with a multi-head worm structure that is fixed relative to the housing. Preferably, the clutch member is a ring member and is sleeved on the clutch supporting shaft, and the multi-head nut structure is formed on the inner circumference of the clutch member; the multi-head worm structure is formed on the outer circumference of the clutch supporting shaft. Preferably, the multi-head nut structure has a lead angle of 15-45 degrees; and/or the multi-head worm structure has a lead angle of 15-45 degrees; and/or the clutch has an adjustment stroke of 10-25 mm.

According to a preferred embodiment, the clutch is connected to an actuating device which causes a rotation of the clutch.

Preferably, the clutch device includes a clutch spring that acts on the clutch to bring the clutch device into the engaged position.

Preferably, the reel is rotatably supported on the worm wheel support shaft; or the worm wheel support shaft is formed by a cylinder fixed relative to the housing; or the worm wheel is coaxial with the clutch member.

The invention also relates to a door automatic suction device having the above actuator.

DRAWINGS

The accompanying drawings, which are incorporated in the claims

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic exploded view of an automatic door suction device actuator in accordance with the present invention.

2 is a schematic cross-sectional view of a door automatic suction device actuator in accordance with the present invention with the clutch in an engaged state.

3 is a schematic cross-sectional view of a door automatic suction device actuator in accordance with the present invention with the clutch in a disengaged state.

Figure 4 is a schematic perspective view of the clutch device of the actuator.

detailed description

An actuator for a door automatic suction device according to the present invention will be described below with reference to the accompanying drawings and by way of embodiments. The orientation words "upper" and "lower" as used in the following description refer to the corresponding directions in the drawings, regardless of the installation state.

As shown in Figures 1 and 2, the actuator for the automatic door suction device includes a housing 1 and an end cap 2. The encapsulation of the actuator is achieved by the housing 1 and the end cap 2 and the necessary sealing structure. An opening through which the output shaft 13 of the power supply machine 12 passes is formed in the casing 1. The output shaft 13 of the motor extends through the opening into the interior of the actuator. The opening can be closed with a sealing ring (not shown).

The actuator of the door automatic suction device comprises a worm wheel 3 which is rotatably supported on the worm wheel support shaft. The worm wheel support shaft is formed in the present embodiment by a cylinder 9 fixed relative to the housing 1. The worm gear 3 is connected to a drive device, in particular an output shaft 13 of the electric machine 12. For example, the worm wheel 3 is constructed as a disk member on which a tooth portion 15 is formed, which meshes with the pinion gear of the output shaft 13.

The worm wheel 3 is drivingly connected to the reel 4, and the reel 4 is also rotatably supported on the worm wheel support shaft. That is, the reel 4 is coaxial with the worm wheel 3. Of course, a scheme in which the reel 4 and the worm wheel 3 are not coaxial is also possible. This worm wheel support shaft is also formed by the above-described cylinder 9 in this embodiment. That is, the worm wheel 3 is disposed coaxially with the reel 4. When the worm wheel 3 is rotated by the output shaft 13 of the motor 12, the reel 4 rotates together with the worm wheel 3.

Here, the reel 4 and the worm wheel 3 each have a coupling structure. For example, as shown in FIG. 1, the coupling structure of the reel 4 includes a tooth portion 20 that projects downward toward the worm wheel 3. The tooth portion 20 meshes with the tooth portion 21 formed on the inner circumference of the worm wheel 3.

A winding structure is formed on the wire reel 4, and an output cable 11, such as a Bowden cable, is wound around the winding structure. The output cable 11 is connected to a door tensioning mechanism.

In operation, the motor 12 is activated, for example, based on a signal from the sensor or a signal from the controller, the output shaft 13 rotates and drives the worm wheel 3 to rotate, and the wire wheel 4 that is drivingly coupled to the worm wheel 3 rotates together and drives the output wound on the wire wheel 4. Cable 11. The output cable 11 drives the door tensioning mechanism to pull the door to the locked position.

However, for such a door automatic suction device, it is desirable in some cases for its transmission to fail. For example, when the sensor fails, the control system fails, or the motor fails (for example, due to an accident, etc.), it is desirable that the door automatic suction device fails so that the door can be opened. To this end, according to the invention, a clutch device is provided in the actuator for the automatic door suction device. The clutch device has a disengaged position that maintains the engaged position of the drive train of the actuator and disconnects the drive train of the actuator.

According to the embodiment shown in the figures, the clutch device comprises a clutch member 7 arranged between the worm wheel 3 and the reel 4. The clutch member 7 has a multi-head nut structure 16. For example, the clutch member 7 is designed as a ring member and is sleeved on the clutch member support shaft, and a multi-head nut structure 16 is formed on the inner circumference of the ring member (as shown in FIG. 4). A multi-head worm structure 8 is formed on the clutch support shaft, and the multi-head worm structure 8 cooperates with the multi-head nut structure 16 of the clutch member 7 to achieve a separation or engagement position of the clutch device.

The clutch support shaft for supporting the clutch member 7 may be formed by a worm wheel support shaft for supporting the worm wheel 3 and the wire wheel 4, that is, the cylinder 9. However, it is also possible that the clutch support shaft is different from the worm support shaft. That is, the clutch member 7 can be coaxial or non-coaxial with the worm wheel 3.

The clutch member 7 is coupled to the operating device 10 to effect actuation of the clutch device. The handling device 10 is for example a steering cable, in particular a Bowden cable. The handling device is connected to an external operating member, such as a door handle, a specially provided lever or button or the like.

In one embodiment, the multi-head nut structure 16 and the multi-head worm structure 8 have a lead angle of, for example, 15-45 degrees, thereby achieving an adjustment stroke of the clutch member 7, for example 10-25 mm, when actuated.

Further, a clutch spring 6 is provided which biases the clutch member 7 in the mounted state to bring the clutch device into engagement. Moreover, after the manipulation of the operating device 10 is completed, the clutch member 7 is returned to the engaged position under the bias of the clutch spring 6.

In the normal operating state, the clutch device is in the engaged position (see Figure 2). In this case, the multi-head nut structure 16 of the clutch member 7 is dropped into the multi-head worm structure 8 due to the bias of the clutch spring 6. At this time, the multi-head nut structure 16 of the clutch member 7 is fitted to the multi-head worm structure 8 on the cylinder 9, so that the worm wheel 3 is engaged with the reel 4. In this case, the actuator chain of the actuator is maintained.

In the event that it is desired to disable the actuator of the door automatic suction device, the clutch device is placed in the disengaged position (see Figure 3). The operating device 10 is driven by operating the external operating member. The operating device 10 drives the clutch member 7 and rotates it. The rotation of the clutch member 7 causes the multi-head nut structure 16 thereon to rotate relative to the multi-head worm structure 8 on the cylinder 9, and is moved upward by an adjustment stroke under the guidance of the multi-head worm structure 8. Thereby, the connection between the worm wheel 3 and the reel 4 is disengaged, thereby breaking the transmission chain of the actuator.

In the present embodiment, the worm wheel 3, the reel 4, and the clutch member 7 are supported on the cylinder 9. The cylinder 9 can be integrally formed on the casing 1. For example, the housing 1 with the column 9 is integrally formed in one process by an injection molding method. Of course, other embodiments are also conceivable, for example, the cylinder 9 is anchored, bonded or welded to the housing 1.

Further, as shown in Fig. 1, a pressing spring 5 is provided to press-fit the wire reel 4 to the cylinder 9.

The respective components in the present application may be, for example, a metal material or a plastic material, and of course, any other suitable material may be used.

Although the invention has been disclosed above in the preferred embodiments, the invention is not limited thereto. Any changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention are intended to be included in the scope of the present invention. The scope of the invention should be determined by the scope defined by the claims. .

1 housing

2 end cap

3 worm gear

4-wire wheel

5 compression spring

6 clutch spring

7 clutch parts

8 multi-head worm structure

9 cylinder

10 operating device

11 output cable

12 motor

13 motor output shaft

15 worm gear teeth

16 nut structure of the clutch nut

20-wheel coupling structure of the tooth

21 worm gear coupling structure of the tooth

Claims

An actuator for a door automatic suction device, comprising:

Housing (1);

a worm wheel (3) rotatably supported on the worm wheel support shaft and rotatable by a driving device, the worm wheel support shaft being fixed on the casing;

a wire wheel (4), the wire wheel (4) being connectable to the worm wheel (3);

Output cable (11), the output cable (11) is wound on the wire wheel (4) and actuated by the wire wheel (4);

It is characterized in that the actuator further comprises a clutch device having a disengaged position that maintains the engaged position of the drive train of the actuator and disconnects the drive train of the actuator.
The actuator according to claim 1, characterized in that, in the separated position of the clutch device, the connection between the reel (4) and the worm wheel (3) is broken, and the engagement at the clutch device In position, the reel (4) is in driving connection with the worm gear (3).
Actuator according to claim 2, characterized in that the clutch device comprises a clutch (7) arranged between the wire wheel (4) and the worm wheel (3).
Actuator according to claim 3, characterized in that the clutch member (7) has a multi-head nut structure (16) with a multi-head worm structure fixed relative to the housing (1) ( 8) Matching.
The actuator according to claim 4, characterized in that the clutch member (7) is a ring member and is sleeved on the clutch member support shaft, and the multi-head nut structure (16) is formed on the clutch member (7) On the inner circumference; the multi-head worm structure (8) is formed on the outer circumference of the clutch support shaft.
Actuator according to claim 4, characterized in that the multi-head nut structure (16) has a lead angle of 15-45 degrees; and/or the multi-head worm structure (8) has a lead of 15-45 degrees The angle of the stroke; and/or the clutch member (7) has an adjustment stroke of 10-25 mm.
Actuator according to claim 3, characterized in that the clutch (7) is connected to the operating device (10) which causes the rotation of the clutch (7).
Actuator according to claim 3, characterized in that the clutch device comprises a clutch spring (6) which acts on the clutch (7) to bring the clutch device into the engaged position.
The actuator according to claim 1, wherein said reel (4) is rotatably supported on said worm support shaft; or said worm support shaft is fixed by a cylinder relative to the housing (9) forming; or the worm wheel (3) is coaxial with the clutch member (7).
A door automatic suction device having an actuator according to any one of claims 1-9.