JPH0327746A - Structure for motor mounting - Google Patents

Abstract

PURPOSE:To enable assembly work in a narrow part to be facilitated with assembly workability improved by holding a motor in a manner wherein clamping click of particular shape, provided in a flange in a flange of the motor, interposition-clamp a chassis from its both sides by elasticity of the clamping click through a lock hole of the mate chassis. CONSTITUTION:A rotary shaft 11 of a motor is inserted through a rotary shaft hole 31 in a chassis, next holding pieces 21 are press-inserted into chassis clamping piece insertion holes 32. After the surface of a flange 12 is brought into contact with the before described chassis, the motor is twist-rotated about 30 deg. in the right direction. By rotating twist action, an internal surface of the before described chassis is pressed by a protrusion part 22 of the clamping piece 21, and the motor is held to the before described chassis by interposition- holding it from both sides by the flange and the clamping piece. Thus even without using a tightening screw and tool, the motor can be fixedly mounted to the before described chassis, so that workability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for mounting and fixing a motor that generates rotational power. [Prior art] A conventional method for fixing a motor to the chassis of a printer, etc. is to provide a fixing screw hole in the chassis part that corresponds to the mounting hole provided in the flange of the motor, and then install bolts or screws and fasten the motor. It was fixed.

Note that this type of technology is based on Utility Model Application Publication No. 60-159640.
No. 60-154147, etc. [Problems to be Solved by the Invention] The above-mentioned conventional technology does not have good assembly workability because it requires "r screws" which are fastening parts when attaching the motor to the chassis. For example, screws needed to be prepared, a tool (driver) was required for installation, and a space for the screwdriver was also required, making it difficult to assemble in narrow spaces.

In addition, there was the potential for quality defects such as forgetting to attach screws.

The object of the present invention is to solve the above-mentioned difficulties.

[Means to solve the problem]

In order to achieve the above purpose, it is an object of the present invention to provide a motor that does not require "screws" as fastening parts. As a specific means, the motor is provided with claws that can support the chassis to which the motor is attached from both sides (front and back sides).

[Effect]

The specially shaped supporting claws provided on the flange of the motor can be passed through the lock holes of the mating chassis and held by the elasticity of the supporting claws from both sides (back surface) of the chassis, allowing the motor to be fixed to the chassis. [Example] This example will be explained with reference to the construction drawings and FIG. 4.

FIG. 1 is a perspective view showing a step motor attached to a chassis for driving a paper feeding mechanism of a printer.

FIG. 2 is an exploded perspective view showing the state of FIG. 1 in the middle of assembly.

3 is a schematic front view of the motor shown in FIG. 2, and FIG. 4 is a schematic partial cross-sectional view showing the state in which the motor shown in FIG. 1 is attached to a chassis.

The structure of the motor 10 will be explained below using FIG. An elliptical flange 12 is provided on the rotating shaft 11 side of the motor 10, and a crank-shaped support piece 21 is provided at a portion rotated to the left by approximately 30 degrees from the most protruding part of the flange. A protrusion 22 is provided.

Further, the supporting piece 21 is formed of an elastic body and has a structure that it can be bent into about 4 pieces from the surface of the flange 12 with a gap of about 21 Iml.

Next, the chassis to which this motor is attached is made of iron plate and has a plate thickness of about 3 mm, and has a hole 31 through which the motor's rotating shaft passes, and a supporting piece insertion hole 32 that is connected to the rotating shaft hole 31 and is centered around the rotating shaft. A pair is provided.

Next, we will explain the operation during assembly. Pass the rotation shaft l1 of the motor through the rotation shaft hole 31 of the chassis,
Next, push the supporting piece 21 into the chassis supporting piece insertion hole 32 and insert it. After the surface of flange l2 contacts the chassis, twist the motor approximately 30 degrees to the right (clockwise). By rotating and twisting, the protrusion 22 of the supporting piece 21 presses against the inner surface of the chassis, and the flange and supporting piece sandwich the chassis from both sides, allowing the motor to be held on the chassis. According to this embodiment, when installing the motor and chassis, as long as the motor and chassis are present, one-touch installation is possible without the need for screws, which are fastening parts, and there is no need for a screwdriver, resulting in good assembly work efficiency. In this embodiment, a pair of supporting pieces are provided on a flange-equipped motor, but as an example of application, it may be used as an attachment part for a motor in which only the supporting claws are made independent, as shown in FIG. In this example, attach the motor and attachment parts in advance by attaching the snap claw 4l to the motor mounting hole 42.
It is sufficient to make an assembly by snap-coupling it to the body, and then attach it to the main body as in the first embodiment.

Also, although there was one pair of support pieces, the results were the same with two or three pairs. FIG. 6 is a perspective view showing a case where the flange portion of the motor is a regular square. This product has an elliptical motor flange shape.
It can be seen that the effect can be seen regardless of the flange rectangle. FIG. 7 shows a type in which anti-vibration rubber is baked inside the flange portion and support piece of the motor. In this case, it goes without saying that the installation is a one-touch operation, and it is also effective in reducing the transmission of motor vibration to the chassis.

〔Effect of the invention〕

According to the present invention, when attaching the motor to the chassis, the motor can be attached and fixed to the chassis by twisting without providing fastening screws and tools for tightening the screws, so that work efficiency is improved.

[Brief explanation of drawings]

1 to 4 show one embodiment of the present invention, FIG. 1 is a perspective view showing the function of a step motor for driving the paper feed mechanism of a printer attached to a chassis, and FIG. 2 is a view similar to that shown in FIG. 1. Fig. 3 is a front view of the motor shown in Fig. 2, Fig. 4 is a partial sectional view of the motor shown in Fig. 1 attached to the chassis, and Fig. 5 is an exploded perspective view of the motor shown in Fig. 1 in the middle of assembly. Fig. 6 is a perspective view showing an embodiment in which the flange shape of the motor is a regular square, and Fig. 7 is a side sectional view. 5... Chassis, 10... Motor, 11... Rotating shaft, 12... Flange, 21... Supporting piece, 2... Projection, 1... Rotating shaft hole, 2... - Support piece insertion hole, O... Attachment, 1... Snap claw, 2... Mounting hole, 1... Vibration isolating rubber. Horse horse 40 ＼ 6th ro 2l

Claims (1)

[Claims] 1. For flanged motors, the thickness of the flange surface and the mating chassis to which the motor is installed is approximately 2 m between one end of the flange and the other end on the opposite side of the motor's rotation axis.
A motor mounting structure characterized by having elastic gripping claws with a gap of m.