KR100403004B1 - Driver structure for power window motor with one body damping wheel - Google Patents

Abstract

The driver structure for a power window motor having an integrated damping wheel of the present invention is used in a gear arrangement with a worm shaft formed on a rotor shaft of a commutator motor, and is gear-coupled with the worm shaft and has a circular ring shape having a predetermined width. (400), the damping wheel 200 is fixed to the inner circumferential surface of the worm gear 400, soft to the play, and has a durability corresponding to the tension, and the damping wheel 200 as a fixed pin 100 to the shaft It includes an output shaft 300 is coupled, and the shock and vibration due to the sudden stop and recoil of the output shaft 300 by the elasticity of the damping wheel 200 when the worm gear 400 is rotated.

Description

DRIVER STRUCTURE FOR POWER WINDOW MOTOR WITH ONE BODY DAMPING WHEEL}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driver structure for a power window motor having an integrated damping wheel, wherein the gear arrangement of a drive device mounted on a power window motor (also known as a WLM; window lifting motor) used to open and close a vehicle window using a power source. It's about structure.

In general, a driver refers to a moving axis that receives power from a link mechanism, a cam mechanism, or a gear combination.

In particular, the driver structure in the gear combination refers to the gear arrangement of the reduction gear that decelerates the high speed motor power at a low speed to generate a large torque.

The driver structure for the motor has been used for driving mechanisms throughout the industry by using the motor power, and especially in the automobile field, it is widely used in wipers, car window openings, rear view mirrors, and electric seats, so that the convenience of driving a vehicle and a high-quality ride comfort To provide.

On the other hand, a typical power window motor has a regulator device mounted directly under the glass window to open and close the window of the vehicle. Such power window motors generate torque to lift the windshields and regulator devices of the vehicle, and are controlled by electronic controls for one-touch windshield lowering and lifting operations.

Such power window motors typically generate high torque through a worm gear structure arranged in the gearbox, but the teeth of the worm gears are suddenly decelerated and stopped by the electronic control device during the one-touch window lowering and lifting. Has the disadvantage of breaking or impacting the mechanism of the regulator.

Prior art power window motors utilize a commutator motor and a worm gear structure, as disclosed in US Pat. No. 4,899,608. This patent includes a brush motor portion 1 for rotating the rotor shaft and a gear case 6 having a vessel shape to incorporate a reduction gear arrangement, as shown in FIGS. 1A-1C. The gear case 6 is bolted to the flange of the brush motor unit 1 and has a case cover 61 that can be disassembled and assembled.

Inside the gear case 6, a worm shaft 7 extending in the transverse axis direction from the rotor shaft is arranged. The worm shaft 7 is gear-engaged with the worm gear 4 in the gear case 6 and serves to decelerate and rotate the output shaft 5 fastened to the shaft center of the worm gear 4.

This power window motor is provided with a shock absorbing disk 2 such as a damping liner of impact damping material inside the worm gear 4 to minimize breakage of the worm gear structure by sudden deceleration and stop. In the buffer disk 2, three drive grooves 24, which can be driven integrally with the projections 14 formed integrally with the inner plane of the worm gear 4, are formed at regular intervals in the circumferential direction. And a spring lip 21 which protrudes slightly in the axial direction is formed. In addition, three drive pins 31 are formed on the dog plate 3 at regular intervals. The drive pins 31 of this dog plate 3 are respectively inserted into the drive through holes 28 formed in the shock absorbing disk 2 at the time of assembly to transmit the driving force of the motor to the worm gear 4. In addition, the dog plate 3 forms a hole in the center so that the end of the output shaft 5 can pass therethrough, and is coupled to the output shaft 5 by a fixing pin 51. The coupled output shaft 5 is rotatably coupled to the gear case 5 by a bearing, and includes a driven gear 5 to transmit the decelerated / damped torque to the outside.

Similar conventional power window motors include the 'integrated damper and driver structure' of U.S. Patent No. 4,748,865, the 'three-hole damper and 3-pin driver' of U.S. Patent No. 5,566,592, and the '6 equivalents of WOT838349 and WO0008350. Integrated dampers.

These patents focus on worm gear arrangements, which are commonly configured to mount damping liners or buffer disks and dog plates inside the worm gears to serve as a power damper and to dampen impacts in case of emergency. That is, these patents have a damper structure that realizes the deceleration and cushioning effects of a general motor, and the shape of a dog plate that is greatly different.

However, the power window motor according to the prior art may generate noise or fail to smoothly operate according to assembly structures and assembly tolerances between complex mounting members, and have a relatively high defect rate.

In addition, the conventional power window motor has a disadvantage in that the manufacturing process is relatively difficult, the manufacturing cost is high, the operation is stopped when a problem occurs in the end coupling due to the mechanical assembly, or the teeth of the alignment portion of the worm wheel and the worm gear is broken.

In addition, the power window motor of the prior art has a plurality of mounting members are coupled to the inside of the worm gear, the thickness of the one-gear structure, and naturally requires a thick gear case, so that the compact and slim design is difficult have.

In order to solve the conventional problems as described above, an object of the present invention is to provide a single worm gear having a wheel shape of different materials, thereby minimizing machine noise, and the thickness of the gear case is very thin, It is to provide a driver structure for a power window motor having an integrated damping wheel which is simple in structure and excellent in shock attenuation performance.

1A is a partial cross-sectional view illustrating a drive device arrangement of a conventional power window motor;

1B is a cross-sectional view for describing a coupling relationship between the drive device illustrated in FIG. 1A;

1C is a plan view for explaining an important part of the drive apparatus shown in FIG. 1A;

2 is an exploded perspective view for explaining the configuration of a driver structure for a power window motor having an integrated damping wheel according to the present invention;

3A and 3B are cross-sectional views for explaining a method of operating a driver for a power window motor having an integrated damping wheel shown in FIG.

<Explanation of symbols for the main parts of the drawings>

100: fixed pin 200: damping wheel

201: Wheel Axle 202: Wheel Boss

300: output shaft 400: worm gear

In order to achieve the above object, the present invention provides a driver structure for a power window motor having an integrated damping wheel for use in gear arrangement with a worm shaft formed on a rotor shaft of a commutator motor. A worm gear having a circular ring shape having a circular ring shape, a damping wheel that is tightly fixed to the inner circumferential surface of the worm gear, has a soft play, and has a durability corresponding to tension, and an output shaft axially coupled to the damping wheel by a fixing pin; And a damping wheel attenuated by the elasticity of the damping wheel when the worm gear is rotated, thereby reducing the impact and vibration caused by the vibration of the output shaft.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

2 is an exploded perspective view for explaining the configuration of a driver structure for a power window motor having an integrated damping wheel according to the present invention, and FIGS. 3A and 3B are power window motors having an integrated damping wheel shown in FIG. Sectional drawing for explaining the operation method of the driver.

As shown in FIG. 2, the present invention includes a worm gear 400 that is gear-coupled with a worm shaft formed on a rotor shaft of a commutator motor, and a damping wheel 200 that is tightly fixed to an inner circumferential surface of the worm gear 400. , The driver structure is composed of a fixing pin 100 for fixing the output shaft 300 to the damping wheel (200).

The worm gear 400 is mounted on a gear case of a power window motor designed to have a slim thickness. The worm gear 400 has a circular ring shape having a predetermined width, and the material has a gear steel and a special steel material. The outer circumferential surface of the worm gear 400 formed as described above is formed with a janggo-type or screw-type teeth, the damping wheel 200 of different materials is fixed to the inner circumferential surface by a special adhesive. Here, since the damping wheel 200 is a different material from the worm gear 400, a special adhesive was used. For example, world-class adhesive companies such as 3M Corporation are selling ferrous and nonferrous metals or rocket alloys, solid fuels and adhesives used to bond rubber and iron.

The damping wheel 200 adhered to the worm gear 400 is made of a reinforced rubber material having good playability, excellent durability against tension, and good elasticity, and has the same width as that of the worm gear 400. In addition, the damping wheel 200 is formed integrally with the wheel shaft 201 having a plurality of tornado shape between the outer rim and the wheel boss 202 on the wheel core side. The wheel shafts 201 are formed in a shape that becomes thinner and thinner toward the wheel boss 202 from the outer rim having a slightly thicker thickness, so that the wheel shaft 201 is durable and has a whirlwind shape, so that the wheel shaft 201 is slightly sagging in the planar direction, and has excellent play characteristics. The resilience characteristic is very good. In addition, a plurality of coupling grooves 203 are formed in the inner diameter of the wheel boss 202 in the axial direction, such that the output shaft 300 is engaged without slipping in the rotational direction.

The output shaft 300 forms a plurality of fastening grooves 303 corresponding to the coupling grooves 203 of the wheel boss 202 in the axial direction on the outer circumferential surface, and requires a separate fixing key. It may be axially coupled to the wheel boss 202 without the need.

In addition, the circumferential surface of the end of the output shaft 300 is formed with a groove 301 in which the fixing pin 100 can be seated in the radial direction. And, the other end of the output shaft 300 is formed with a connecting member 304 that can be coupled to the external vehicle window regulator.

The output shaft 300 formed as described above is fitted to the wheel boss 202 and then fixed by the fixing pin 100 so that the output shaft 300 does not fall out in the axial direction, and is formed by the fastening groove 303 and the engaging groove 203. 202 is fitted with, the fixing pin 100 is fastened to the end so as not to fall in the axial direction. The damping wheel 200 having such a wheel boss 202 functions as a connecting shaft of the worm gear 400 to transmit the driving force transmitted to the worm gear 400 to the output shaft 300 when rotating in the circumferential direction. At the same time it is responsible for the shock absorbing effect to attenuate the impact of the sudden stop of the output shaft (300).

In the following, an operation method of a driver structure for a power window motor having an integrated damping wheel of the present invention as described above will be described.

3A and 3B, the worm gear 400 having the damping wheel 200 is rotatably seated inside the gear case 60. At this time, the teeth of the worm gear 400 are gear-coupled with the worm shaft 70 to receive the driving force of the rotor. That is, the rotor shaft rotates due to the rotation of the rotor, and the wheel shaft 70 formed integrally with the rotor shaft rotates. The wheel shaft 70 rotates the worm gear 400 according to the worm gear arrangement about the wheel shaft. In this case, the driving force is transmitted to the damping wheel 200 and the plurality of wheel shafts 201 through the worm gear 400. At this time, the wheel shaft 201 rotates the output shaft 300 axially coupled to the wheel boss 202, while maintaining a whirlwind shape that is constantly refracted by inertia. Therefore, the damping wheel 200 removes the soft vibration and the soft vibration easily generated during the normal rotation of the worm gear 400 by the buffering action according to the characteristics of the reinforced rubber material.

In addition, the damping wheel 200 buffers the vibration transmitted in case of emergency from the output shaft 300 or the shock generated when the sudden output shaft 300 stops. That is, a conventional power window motor includes a rotation speed and direction sensor and an electronic control circuit that detects the rotation state of the rotor, but when a part or an object of the human body is caught between the window frame and the glass window of the vehicle, The timing of stopping the operation or stopping in the opposite direction is slightly delayed, resulting in an impact on the worm gear structure.

However, the damping wheel 200 of the present invention attenuates by extending the wheel boss 202 axially coupled to the stationary output shaft 300 in a direction that is slightly wound within the maximum tension range. Accordingly, the damping wheel 200 prevents excessive impact on the worm gear structure and prevents the teeth of the worm gear 400 and the worm shaft 70 from being damaged.

In addition, the damping wheel 200 transmits only a slight impact to the worm shaft 70, and thus the rotational speed and direction sensor and the electronic control circuit is activated to rotate or stop the worm shaft 70 in the opposite direction. By doing so, a durable worm gear structure is realized with an excellent impact reduction role.

In addition, the damping wheel 200 is a worm shaft because, even when the worm gear 400 is rotated in the opposite direction due to the operation of the detection sensor and the electronic control circuit, the good wheel shaft 201 is to be restored to its original shape, The rotation in the opposite direction of 70 can be accelerated.

As described above, the driver structure for the power window motor having the integrated damping wheel of the present invention uses the damping wheel together with the wheel shaft of the worm gear, thereby making it possible to perform a superior shock attenuation operation compared to a very simple gear coupling structure. It works.

In addition, the driver structure for a power window motor having an integrated damping wheel of the present invention has a relatively very thin gear case, which has the advantage of having a more compact configuration.

In addition, the driver structure for a power window motor having an integrated damping wheel of the present invention forms a worm wheel with a toroidal shape so as to have excellent elastic force, and serves to accelerate the rotation of the initial worm shaft, but the reverse rotation performance is relatively As it has outstanding advantages.

In addition, the driver structure for a power window motor having an integrated damping wheel of the present invention is very light and structurally stable worm gear because the component to be mounted consists only of mounting members such as a worm gear having a damping wheel and other fixing pins and bearings. This has the effect of realizing an array.

Claims (3)

In a driver structure for a power window motor having an integrated damping wheel used for gear arrangement with a worm shaft formed on a rotor shaft of a commutator motor, A worm gear 400 gear-coupled with the worm shaft and having a circular ring shape having a predetermined width; A damping wheel 200 fixed in close contact with the inner circumferential surface of the worm gear 400 and having a plurality of wheel shafts 201 thinner from the outer rim side having a somewhat thicker thickness toward the wheel boss 202 so as to have a whirlwind shape; An output shaft 300 axially coupled to the damping wheel 200 by a fixing pin 100, Power window motor having an integrated damping wheel characterized in that the shock and vibration caused by the sudden stop and recoil of the output shaft 300 is attenuated by the elasticity of the damping wheel 200 when the worm gear 400 is rotated. Driver structure. delete The method of claim 1, Wheel boss 202 of the damping wheel 200 is a power window motor having an integral damping wheel, characterized in that a plurality of coupling grooves 203 are formed to axially coupled with the output shaft 300 without slipping. Driver structure.