JPS6233496Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] Industrial Application Field The present invention relates to a fixture for a motor used, for example, in a blower of an air conditioner for an automobile.

Prior Art As shown in Figs. 1 and 2, a conventional motor fixture is for attaching a motor M to a mounting member 6 such as a fan scroll, and has an elastic member 2 with a built-in collar 4 in its center hole. After the elastic member 2 is fitted into the mounting hole formed in the bracket 1 of the motor M, a screw member having a head having a diameter larger than the inner diameter of the collar 4 and having a pointed screw portion 5a hanging therefrom. 5
is inserted into the collar 4, and the sharp threaded portion 5a of this threaded member 5 is tightened and fixed to a mounting member 6 such as a fan scroll.

Problems to be Solved by the Invention The fixture constructed in this manner screws the screw member 5 into the synthetic resin mounting member 6, so to speak, the metal screw member 5 is screwed into a relatively fragile part. Therefore, the screw member 5 is likely to loosen and play, and the threads on the mounting member 6 side are also likely to collapse, which limits the number of times the screw member 5 can be attached and detached.

Therefore, the screw member 5 of this mounting member 6
The parts where the parts are screwed together and the surrounding parts must be considerably thicker than other parts.

However, in a fan scroll where high-speed air flows inside, if there is a part that protrudes toward the internal space, this becomes a flow resistance of the wind.
Since there is a risk of generating wind noise, there is a trade-off problem in that it is preferable that the thickness of the portion where the screw member 5 is screwed is made as small as possible.

The present invention was developed in order to solve the drawbacks and problems associated with the above-mentioned conventional technology, and it has been developed to provide sufficient strength to reliably maintain the screwed state of the threaded member without increasing the thickness of the mounting member. An object of the present invention is to provide a motor fixing device having a screw member that does not easily loosen.

[Structure of the invention] Means for solving the problem In order to achieve the above object, the present invention has an elastic member having a built-in collar in the center hole, which is fitted into the mounting hole of the motor bracket, and the inner diameter of the collar is The motor is fixed to the mounting member by inserting a screw member having a larger diameter head and having a sharpened screw portion hanging down through the collar and screwing the pointed screw portion onto the mounting member. In the motor fixing device, the screw member is configured to be screwed not only to the mounting member but also to a member to be screwed made of a thin rigid material embedded in the mounting member. .

By doing this, when the screw member is screwed into the mounting member, the screw member provided on the side of the mounting member is also screwed into the screw member, so that only the screw member and the mounting member are screwed together. The tightening strength is improved and the mounting member can be made thinner than the threaded connection.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is a sectional view showing one embodiment of the present invention, and the same members as those shown in FIGS. 1 and 2 are given the same reference numerals.

This fixture 10 has a fan scroll with a built-in fan 11 as the mounting member 6, and a motor M attached to the mounting member 6.
The bracket 1 is attached via an elastic member 2 or the like.

That is, this fixture 10 has an elastic member 2 fitted into the mounting hole 1a of the bracket 1, a washer 3 placed on the top of the elastic member 2, and a sleeve member S fitted into the center hole 12. ing.

A notch 13 is provided at the top of the center hole of the elastic member 2, so that when tightening is performed with a screw member 5 having a head larger in diameter than the inner diameter of the collar 4 and having a sharp screw portion 5a hanging down, This is the relief allowance for the elastic member 2.

The sharp threaded portion 5a of this threaded member 5 passes through the sleeve member S and the mounting member 6, and extends to a threaded portion 14 into which this threaded member 5 is threaded.

This screwed part 14 has a slightly thicker wall (thickness D) than the thinner part 8 (thickness d) at its peripheral edge, and has a through hole 16 in the center of this screwed part 14.
A thin rigid material (e.g. steel plate) is installed inside.
A member 17 to be screwed is embedded therein.

As shown in FIG. 4, this screwed member 17 has a screwed hole 17a in the center and has an oval outer shape. This is to prevent the screw member 5 from rotating when screwing together while rotating. Further, the member to be screwed 1 in this part to be screwed 14
7 is buried at a position where the wall thickness is equivalent to that of the thin walled portion 8 on the periphery, in order to improve resin fluidity during molding.

That is, if the mounting member 6 is made of synthetic resin and the screwed member 17 is made of iron plate,
Since the rigidity of the screwed part 14 into which the screw member 5 is screwed can be supplemented, the wall thickness D of this screwed part 14 can be made much smaller than that of the conventional one. However, if the wall thickness of this part is made too small, there is a risk that the flow of the resin flowing through this threaded part 14 will be poor, considering the resin molding process. It is desirable that the wall thickness be the same.

Moreover, if the screwed member 17 is made of a rigid material in this manner, there is no risk that the screw hole 17a will collapse even if the screw member 5 is repeatedly attached and removed.

In particular, if the overall length of the screw member 5 is shortened so that its tip does not protrude from the mounting member 6, even if high-speed air flows inside the scroll, the tip of the screw member 5 will not protrude from the mounting member 6. There is no wind resistance or wind noise.

Furthermore, in the above-described configuration, after the sleeve member S is fitted into the center hole 12 of the elastic member 2, the elastic member 2 is fitted into the mounting hole 1a of the bracket 1, and the screw member 5 is passed through the elastic member 2. In this state, the screw member 5 will be inserted into the through hole 16 of the mounting member 6, and the screw member 5 will be inserted deeper than in the past.
The state of the screw member 5 at the time of tightening is stabilized, making this tightening easier, and positioning when attaching the elastic member 2 also becomes easier. Since this tightening work is regulated by the sleeve member S,
without reducing the cushioning properties of the elastic member 2,
The elasticity of the elastic member 2 can be kept constant and the elastic member 2 can be tightened with a constant tightening force. Therefore, the anti-vibration performance for absorbing vibrations from the motor M is also improved.

The bracket 1 of this motor M has three mounting holes 1.
A is provided, but since each fixture can be tightened easily, the positioning and tightening work, which is performed three times with one unit, can be performed extremely easily.

FIG. 5 shows another embodiment of the present invention,
The screwed member 17 has a medium-height shape to increase the rigidity of the screwed member 17 itself. In this way, the thickness of the threaded portion 14 can be made even smaller than that of the previous embodiment.

It goes without saying that the present invention is applicable not only to the blower of the above-mentioned automobile air conditioner, but also to the attachment of various types of motors.

[Effects of the invention] As described above, according to the invention, the screw member is configured to be screwed not only to the mounting member but also to the threaded member made of a thin rigid material embedded in the mounting member. , even if the wall thickness of the threaded part is thin, it is possible to tighten with a certain level of strength, and if this fixture is applied to things like blowers, it will prevent the generation of wind noise and reduce air flow resistance. This also facilitates the positioning or installation of the fixture.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional motor fixture, Fig. 2 is a sectional view showing the main parts of Fig. 1, and Fig. 3 is a sectional view showing the main parts of Fig. 1.
FIG. 4 is a plan view of a member to be screwed together, and FIG. 5 is a cross-sectional view showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Bracket, 2...Elastic member, 5...Screwing member, 6...Mounting member, 10...Fixing tool, 11
...Fan, 12...Center hole, 14...Screwed part, 17...Screwed member, M...Motor.

Claims (1)

[Claims for Utility Model Registration] 1. Elastic member 2 with a built-in collar 4 in the center hole 12
is fitted into the mounting hole 1a of the bracket 1 of the motor, and a screw member 5 having a head diameter larger than the inner diameter of the collar 4 and having a sharp threaded portion 5a hanging therethrough is inserted into the collar 4. By screwing the screw portion 5a into the mounting member 6, the mounting member 6
In the motor fixing device, the screw member 5 is configured to be screwed into a threaded member 17 made of a thin rigid material embedded in the mounting member 6 side. Fixture. 2. The motor fixture according to claim 1, wherein the threaded member 17 is formed into a medium-height shape.