JP2582311Y2 - Anti-vibration device for motor with worm gear - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration device for a motor with a worm gear that repeatedly starts and stops, such as a drive motor for opening and closing a window glass of an automobile.

[0002]

2. Description of the Related Art In recent years, there has been an increasing demand for preventing the transmission of vibration from a motor with a worm gear to a mounting device to generate noise.

A conventional motor with a worm gear will be described below. FIG. 2 shows the configuration of a conventional motor with a worm gear. In FIG. 2, the rotational force of a motor shaft 1 is transmitted to a worm wheel 2, and further a torque is sequentially transmitted to an output shaft via a damper rubber 3 and a torque transmission plate 4. The rotation of the worm wheel 2 and the output shaft 5 is supported by a gear case 6, and the gear case 6 is attached to a mating device.

[0004]

However, in the above-described conventional configuration, the vibration of the motor is directly transmitted from the output shaft 5 and the gear case 6 to the counterpart device, so that the counterpart device itself vibrates, and furthermore, the vibration is caused by the vibration. There is a problem that occurs.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide an anti-vibration device for a motor with a worm gear, which prevents transmission of vibration to a partner device.

[0006]

In order to achieve this object, a vibration isolator for a motor with a worm gear according to the present invention includes a gear case for supporting the rotation of a worm wheel, and a gear for supporting the rotation of an output shaft to a counterpart device. A mounting plate for fixing the motor, a waterproof rubber for preventing water from entering the gear case, and a rubber bush inserted into the mounting plate hole, the worm wheel and the torque transmission plate. The gear case and the mounting plate do not come into contact with each other through the damper rubber without contact, and the waterproof rubber and the rubber bush are interposed therebetween without contact.

[0007]

With this structure, the damper rubber prevents vibration from transmitting from the worm wheel to the torque transmission plate and the output shaft, and the waterproof rubber and the rubber bush prevent vibration from transmitting from the gear case to the mounting plate. The vibration can be prevented from being transmitted to the mounting plate and the other device connected to the output shaft.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the worm wheel 12
And the torque transmission plate 14 do not contact with each other, and the damper rubber 13 is interposed therebetween. The rotation of the worm wheel 12 is supported by the gear case 16, and the rotation of the output shaft 15 connected to the torque transmission plate 14 is supported by the mounting plate 17. The mounting plate 17 is mounted on the gear case via a rubber bush 19 without coming into contact with the gear case 16, and a waterproof rubber 18 is disposed between the mounting plate 17 and the gear case 16. Fixing to the counterpart device is performed by the mounting plate 17.

The operation of the anti-vibration device for a motor with a worm gear configured as described above will be described with reference to FIG. The rotational force of the motor shaft 11 is transmitted to the worm wheel 12, and furthermore, a damper rubber 13 and a torque transmission plate 14
, The torque is sequentially transmitted to the output shaft 15 in the same manner as in the conventional example, but the damper rubber 13 prevents the vibration from being transmitted from the worm wheel 12 to the torque transmission plate 14 and the output shaft 15, The waterproof rubber 18 and the rubber bush 19 prevent vibration from being transmitted from the gear case 16 to the mounting plate 17.

As described above, according to this embodiment, the output shaft 1
5. Vibration can be prevented from being transmitted to the counterpart device connected to the mounting plate 17.

[0012]

As is clear from the above description of the embodiment, the worm wheel and the torque transmitting plate do not come in contact with each other, and the damper rubber is interposed therebetween. With an excellent worm gear that can prevent vibration from being transmitted to the mating device connected to the output shaft and the mounting plate by passing through the bush, and also prevent the generation of noise due to the vibration of the mating device itself This realizes a motor vibration isolator.

[Brief description of the drawings]

FIG. 1 is a sectional view of a vibration isolator of a motor with a worm gear according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a conventional vibration isolator of a motor with a worm gear.

[Explanation of symbols]

 Reference Signs List 11 motor shaft 12 worm wheel 13 damper rubber 14 torque transmission plate 15 output shaft 16 gear case 17 mounting plate 18 waterproof rubber 19 rubber bush

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 63-156551 (JP, U) Japanese Utility Model Sho 59-60850 (JP, U) Japanese Utility Model Hei 1-143260 (JP, U) Japanese Utility Model Sho 57- 1748 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) H02K 5/24 H02K 7/06

Claims (2)

(57) [Scope of request for utility model registration] A worm wheel that meshes with a motor shaft, an output shaft that transmits a rotational force of the worm wheel, a torque transmission plate that engages with the output shaft, and is opposed to and engaged with the worm wheel and the torque transmission plate. Damper rubber, a gear case for supporting the rotation of the worm wheel, and a motor for supporting the rotation of the output shaft and transmitting to the counterpart device.
A mounting plate for fixing the gear case, a waterproof rubber for preventing water from entering the gear case, and a rubber bush inserted into the mounting plate hole, without contact between the worm wheel and the torque transmission plate. In the meantime, the gear case and the mounting plate do not come in contact with each other via the damper rubber,
An anti-vibration device for a motor with a worm gear, between which the waterproof rubber and the rubber bush are interposed. 2. A motor having a worm gear formed at a tip thereof.
The rotational force is transmitted by meshing with the shaft and the worm gear
A substantially annular worm wheel and the worm wheel
A damper rubber engaged on one side, and the damper rubber
Of the worm wheel engaged with the other side of the worm wheel
Torque transmission plate, which is transmitted through damper rubber,
The worm wheel is located at the center of rotation of the torque transmission plate.
Output shaft mounted to extend toward
The inner peripheral surface of the worm wheel is rotatably supported by
On the side facing the inside with a space through which the output shaft penetrates
Motor having a cylindrical opening formed by
Shaft tip, worm wheel, damper rubber, transmission plate and
A case that hermetically stores the output shaft and the output shaft except for the opening
Rotates the output shaft in the opening space of the gear case.
Freely indicating bearing and coupling with the gear case
Part and a mounting plate with a coupling part to the mating device side.
In a motor with a worm gear, the gear case is opened.
A flange is provided between the mouth and the bearing of the mounting plate.
Closely contact with the case through the cylindrical waterproof rubber.
It is noted that the attachment part of the attachment plate was joined via a rubber bush.
A vibration isolator for a motor with a worm gear.