JPS63103637A - Vibration preventing device for motor - Google Patents

Abstract

PURPOSE:To obtain a vibration preventing device, prominent in the work-ability of assembling and low in cost, by a method wherein the damper made of rubber, which covers the whole of the mounting part of a motor, is made by the flange type damper made of rubber, into which a nut is embedded. CONSTITUTION:A bracket 1 is incorporated into the fixing part or the bottom part 2a of a motor 2 and dampers 7, made of rubber, are inserted between the motor 2 and the bracket 1 at four places, then, an opening 2b on the bottom part of the motor, the opening 16 of the bracket and the opening 7b of the damper are aligned to clamp them by screws 9. The damper 7, made of rubber, shows the shape of a flange having the opening 7b and a flange 7c while a nut 7a is embedded in the flange near the bottom of the damper.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to an improvement in a photographing prevention device for a motor mounting portion, and more particularly, to a drive motor for an electronic copying machine. The present invention relates to a motor vibration prevention device suitable for use in motors.

(Prior Art) Particularly in the field of high-pressure devices such as electronic copying machines, measures to prevent vibration of drive motors are extremely important.

As a conventional motor photographing prevention device, the embodiments shown in FIGS. 4 and 5 are typical.

In FIG. 4 J3 and FIG. 5, a rubber damper 3 is installed in the bottom mounting part of the motor 2,
Vibration prevention measures are taken by raising the entire bottom part of the mounting bracket 1 from the mounting bracket 1.

In the figure, 4 is a pulley, 5 is a 7-lunge, and 6 is a set screw.

(Problems to be Solved by the Invention) However, in the conventional motor vibration prevention device described above, it is necessary to use a rubber damper 3 that covers the entire mounting surface of the bracket 1, which increases the cost.
Furthermore, there is a problem of poor assembly workability, making it particularly unsuitable for incorporation into precision equipment such as electronic copying machines.

Furthermore, in the conventional motor photographing prevention device, the size of the damper 3 is limited, and therefore, in order to use a commercially available motor, there is an inconvenience that the damper must be remade.

The present invention was achieved as a result of studies to solve the problems in the conventional motor vibration prevention device described above.

Therefore, an object of the present invention is to provide a motor vibration prevention device that has excellent assembly workability, can be applied to existing motors, is low in cost, and can provide a reliable vibration prevention effect. .

[Structure of the Invention] (Means for Solving the Problems) That is, the present invention inserts a flange-shaped rubber damper with a nut embedded between the fixed part of the motor and the bracket to which the motor is attached. The gist of the present invention is to provide a device for preventing photographing of a motor, characterized in that the openings of the motor fixing portion, the damper, and the bracket are all screwed together.

(Function of the Invention) According to the motor vibration prevention device of the present invention, the rubber damper that conventionally covered the entire mounting part is made into a flange shape with an embedded nut, so that the opening (screw hole It is sufficient to use a plurality of dampers whose size is slightly larger than ), which not only improves the assembly work efficiency and reduces the cost of a part of the damper, but also allows attachment to an existing motor.

(Description of Embodiments) Hereinafter, preferred embodiments of the motor vibration prevention device of the present invention will be described in detail with reference to the drawings.

FIG. 1(A) is a plane explanatory view of a motor to which the photographing prevention device of the present invention is applied, FIG. 1(B) is an explanatory cross-sectional view of the same side, and FIG.
The figures are cross-sectional explanatory diagrams of the rubber damper, Figures 3 (A) and (B).
) is a cross-sectional explanatory diagram illustrating the process of co-tightening screws.

As shown in FIG. 1, in the motor vibration prevention device of the present invention, a bracket 1 is assembled into a bottom portion 2a that is a fixed portion of a motor 2, and the motor 2 and the bracket 1
A rubber damper 7 is inserted into four locations between the two parts, and the opening 2b1 at the bottom of the motor, the opening 1b of the bracket and the open lower part b of the damper 7 are aligned with each other, and screws 9 are used to tighten them together.

In FIG. 1, reference numeral 8 denotes a rigid plate inserted between the bottom 2a of the motor 2 and the bracket 1. Although this plate 8 is not necessarily required, if the plate 8 is further incorporated, it is possible to prevent the rubber damper 7 from sticking out due to joint tightening, and from tilting due to variations in the tightening torque, making the vibration prevention effect even more reliable. can be made into something.

The rubber damper 7 used in the present invention has a flange shape with an opening 7b and a flange 7C as shown in FIG. 2, and a nut 7a is embedded near the bottom of the flange. .

It goes without saying that this nut 7a matches the screw 9 used for joint tightening.

The co-tightening operation using this rubber damper 7 is performed as shown in FIG.

First, as shown in FIG. 3(A), the opening 1b of the bracket 1 is
Attach the flange portion 7c of the rubber damper 7, align the opening 7b of the damper 7 with the opening 2b of the motor bottom 2a, and insert the screw 9 into this portion.

Next, in this state, when the screw 9 is tightened, the nut 7a inside the damper 7 moves upward, as shown in FIG. It collapses into a state of 7d, expands to the co-tightened part, and exhibits a vibration-proofing effect. Further, the motor is fixed due to the state 7d.

In addition, in the above-mentioned co-tightening work, since the degree of crushing of the damper 7 differs depending on the force when tightening the screws 9, it is desirable to keep the force as constant as possible when tightening each screw 9.

The appropriate torque for tightening screws is usually 4 to 5 ka.
- cm is suitable.

If the plate 8 made of a rigid body is used, the difference in the degree of collapse of the damper 7 can be reduced, so that the vibration prevention effect becomes more reliable.

[Effects of the Invention] As described above in detail using the embodiments, according to the motor vibration prevention device of the present invention, the rubber damper that conventionally covered the entire mounting part is replaced with a flange-shaped nut embedded. Therefore, it suffices to use multiple dampers that are slightly larger than the opening (screw hole) of the motor mounting part, making it easier to assemble, lowering the cost, being able to be applied to existing motors, and being reliable. A vibration prevention effect can be obtained.

Therefore, the motor vibration prevention device of the present invention is particularly suitable as a countermeasure for precision equipment such as electronic copying machines.

[Brief explanation of the drawing]

FIG. 1(A) is a plane explanatory view of a motor to which the vibration prevention device of the present invention is applied, FIG. 1(B) is an explanatory cross-sectional view of the same side, and FIG.
The figure is a cross-sectional explanatory diagram of a rubber damper, Figure 3 <A), (B
) is a cross-sectional explanatory diagram illustrating the screw tightening process, and Figure 4 is a side view of a motor with conventional vibration prevention measures.
FIG. 5 is a perspective explanatory view showing the assembled state of the motor. 1... Bracket 2... Motor 3... Damper (conventional example) 7... Rubber damper 7a... Nut 7C... Flange portion 8... Rigid plate 9... Screw

Claims (2)

[Claims] (1) Insert a flange-shaped rubber damper with a nut embedded between the motor fixing part and the bracket to which the motor is attached, and tighten the openings of the motor fixing part, damper, and bracket together with screws. A motor vibration prevention device characterized by: (2) The motor vibration prevention device according to claim (1), further comprising a rigid plate incorporated between the motor fixing portion and the bracket.