JP2908854B2 - Bearing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a bearing device applied to, for example, a self-aligning type bearing of a cross flow fan installed in an indoor unit of an air conditioner or the like. .

(Prior Art) In a transverse flow fan applied to an indoor unit or the like of an air conditioner, a rotary shaft is often supported by an automatic alignment type bearing using an elastic material for the purpose of absorbing vibration. Eleventh
FIG. 12 and FIG. 12 show a conventional example of such a cross-flow fan supporting bearing device. A conventional bearing device includes a bearing member 3 that inserts and supports one end of a rotating shaft 2 of a cross flow fan 1.
And an elastic support member 4 for holding the bearing member 3. The elastic support member 4 includes a housing portion 5 and
The housing 5 includes a disk-shaped film portion 6 that supports the outer peripheral portion of the housing 5 and a cylindrical device mounting portion 7 provided on the outer peripheral portion of the film body portion 6. The bearing member 3 is made of metal or the like, and the elastic support member 4 is integrally made of an elastic material such as rubber. A fitting groove 8 is formed in the entire outer circumferential surface of the device mounting portion 7 in the circumferential direction, and the device mounting portion 7 is fixedly inserted by fitting the side wall portion of the casing 9 of the indoor unit into the groove 8. Have been.

In the case where the rotational axis 2 of the cross flow fan 1 has an angular deviation θ in centering and displacement occurs in the bearing portion during operation, for example, as shown in FIG. The portion 6 is deformed following the displacement, and the self-aligning action is performed to obtain a vibration absorbing function.

(Problems to be Solved by the Invention) In the conventional bearing device, as shown in FIG. 11, the bearing member 3, the film body portion 6 and the device mounting portion 7 of the elastic support member 4 are aligned on substantially the same plane. It is arranged.

With such a configuration, the displacement of the rotating shaft 2 is changed from the bearing member 3 to the housing 5 of the elastic support member 4 within the same plane.
Then, the light is transmitted to the device mounting portion 7 and further to the casing 9 through the film body portion 6. For this reason, when the displacement of the rotating shaft 2 is along the direction perpendicular to the axis, the film body 6 absorbs the displacement only by the compression and elongation deformation, so that sufficient vibration damping ability may not always be obtained.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a bearing device that can more effectively absorb vibration of a rotating shaft as compared with a conventional device.

[Configuration of the invention]

(Means for Solving the Problems) The present invention has a bearing member that inserts one end of a rotating shaft and rotatably supports it, and an elastic support member that holds the bearing member. A housing portion for holding the bearing member, a disk-shaped elastic film portion supporting the outer peripheral portion of the housing portion, formed on the outer peripheral portion of the film portion, and fitted into the mounting hole of the mounting device; In a bearing device having a cylindrical device mounting portion to be combined, the bearing member and the device mounting portion are arranged on the same plane, and the film body portion is formed by the bearing member and the device mounting portion. Is displaced toward the rotation shaft from the plane on which is disposed.

(Operation) According to the present invention, the film body is shifted (shifted) from the plane on which the bearing member and the device mounting portion are arranged to the rotation shaft side. The displacement causes bending deformation in the direction of the rotating shaft in addition to compression and elongation. Therefore, a new energy absorbing function by bending deformation is added, so that a larger vibration absorbing function can be obtained as compared with the conventional device, and the function of preventing vibration of equipment such as a casing can be greatly improved. Become. In addition, since the film body portion is deflected from the same plane on which the bearing member and the device mounting portion are arranged to the rotating shaft side, one end of the device mounting portion on the opposite side of the film body portion is largely elastically deformed. The bearing device can be easily inserted into the mounting hole of the mounting device and mounted, and the bearing device can be mounted on the mounting device with a small force. Moreover, since the film body is made of an elastic material, the elastic diameter of one end of the device mounting portion on the opposite side of the film body can be made larger and easier. Can be mounted on mounting equipment.

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

2 and 3 show the configuration of an indoor unit of an air conditioner to which the bearing device of the present invention is applied. That is, the heat exchanger 12 and the cross flow fan 13 are arranged in the box-shaped unit casing 11. One end 14a of the rotating shaft 14 of the cross flow fan 13 is supported on the side wall 11a of the unit casing 11 via the bearing device 15 according to the present embodiment. The other end 14b of the rotating shaft 14 is connected to the motor 16.

FIGS. 1 and 4 to 6 show the structure of the bearing device 15 in detail. That is, the bearing device 15 is
Bearing member 1 for inserting and supporting one end 14a of 13 rotating shaft 14
7 and an elastic support member 18 for holding the bearing member 17. The elastic support member 18 has a housing portion 19 and a disk-shaped film body portion for supporting an outer peripheral portion of the housing portion 19.
20 and a cylindrical device mounting portion 21 provided on the outer peripheral portion of the film body portion 20 are integrally or integrally provided. The bearing member 17 is made of metal or the like, and has an elastic support member 18.
The housing 19, the membrane unit 20, and the device mounting unit 21 are made of an elastic material such as rubber. A fitting groove 22 is formed in the entire outer circumferential surface of the device mounting portion 21 in the circumferential direction, and the device mounting portion 21 is fixedly inserted by fitting the side wall portion 11a of the casing 11 of the indoor unit into the groove 22. Is being worn.

In this structure, the bearing member 17 and the device mounting portion 21 are arranged on the same plane, and the film body portion 20 is shifted from the plane where the bearing member 17 and the device mounting portion 21 are arranged toward the rotating shaft 14. It has been.

As shown by phantom lines in FIGS. 5 and 6, a plurality of radial ribs 23 are integrally formed on the outer peripheral surface of the housing portion 19 and one side surface of the film portion 20 as necessary. ing.

Next, the vibration absorbing function according to this embodiment will be described with reference to FIGS. 7 and 8 in comparison with the conventional example. FIG. 7 is a schematic diagram in axial section showing the operation of the present embodiment, and FIG. 8 is a schematic diagram showing the operation of the conventional example. Here, in both cases, the axial center point A of the bearing member 17, the inner and outer peripheral thickness center points of the film body portion 20 are B and C, and the axial center point of the device mounting portion 21 is D.
And

According to the bearing device 15 of the present embodiment, the elastic support member 18
As shown in FIG. 7, the film body portion 20 is shifted from the plane on which the bearing member 17 and the device mounting portion 21 are disposed to the rotating shaft 14 side, so that a line connecting ABCD is formed. Is bent. On the other hand, according to the conventional bearing device, since the bearing member 3, the film body portion 5, and the device mounting portion 6 are arranged on the same plane, the line connecting ABCD is linear. Has become.

Therefore, in the conventional example, the vibration caused by the displacement of the rotating shaft is only absorbed by the compression and the expansion deformation of the film body portion 6, but a sufficient vibration damping ability may not always be obtained. However, according to the present embodiment, In addition to compression and extension, the rotation axis
Since the bending deformation toward the 14 side occurs, a new energy absorbing function is added by the bending deformation, and a larger vibration absorbing function can be obtained as compared with the conventional case, and the vibration of the equipment such as the casing 11 can be improved. The prevention function can be greatly improved.

In addition, the bearing device 15 of this embodiment has an advantage that the mounting operation can be easily performed even when the bearing device 15 is mounted on a device. This will be described with reference to FIGS. 9 and 10 in comparison with the conventional example. FIG. 9 is a sectional view showing the operation of the present embodiment, and FIG. 10 is a sectional view showing the operation of the conventional example.

In order to mount the bearing device 15 on the side wall 11a or the like of the casing 11, a hole formed in the side wall 11a or the like requires a device mounting portion 21
Groove 22 is fitted to the side wall 11a or the like. In this case, the device mounting section 2
Since the outer diameter of 1 is larger than the hole such as the side wall 11a, it is necessary to contract and deform the device mounting portion 21 toward the inner peripheral side.
At this time, in the conventional example, as shown in FIG. 10, since the bearing member 3, the film body 6 and the equipment mounting section 7 are arranged on the same plane, the film body 6 must be in a compressed state. Requires great power. On the other hand, in the present embodiment, as shown in FIG. 9, since the film body portion 20 is shifted in the axial direction from the bearing member 17 and the device mounting portion 21, the film body portion 20 is curved, The device mounting portion 21 can be deformed to the inner peripheral side by using a hinge shape, and a particularly large force is not required. Therefore,
The mounting operation of the bearing device 15 to the device can be easily performed.

As shown in FIGS. 5 and 6, a rib 23 extending between the housing portion 19 and the film body portion 20 of the elastic support member 18 is provided.
Is provided, sufficient support strength by the film body portion 20 can be obtained while the film body portion 20 is displaced from the support point.

Furthermore, even if the bearing device 15 is greatly deformed,
23 hits the device mounting portion 21, so that excessive deformation can be prevented, and the bearing device 15 can be moved from the side wall portion 11a of the unit casing 11.
Does not come off.

In the above-described embodiment, the case has been described where the housing member 19, the membrane unit 20, and the device mounting unit 21 of the elastic support member 18 are integrally formed of an elastic material. The portions 21 may be formed separately from each other to form an elastic support member integrally. In this case, the present invention can be widely applied to a bearing device in which at least the film body portion 20 is made of an elastic material.

In the embodiment, the bearing member of the present invention is
It was applied to the cross flow fan of the indoor unit of the air conditioner,
Needless to say, the present invention can be applied to various other types of support for the rotating shaft.

(Effects of the Invention) As described above, according to the present invention, the film body portion is shifted (shifted) from the plane where the bearing member and the device mounting portion are arranged to the rotation shaft side, so that the film body portion In addition to compression and elongation, a new energy absorbing function is added by causing bending deformation toward the rotating shaft side, whereby the vibration of the rotating shaft can be more effectively absorbed as compared with the conventional device.

In addition, since the film body portion is deflected from the same plane on which the bearing member and the device mounting portion are arranged to the rotating shaft side, one end of the device mounting portion on the opposite side of the film body portion is largely elastically deformed. The bearing device can be easily inserted into the mounting hole of the mounting device and mounted, and the bearing device can be mounted on the mounting device with a small force. In addition, since the film body is made of an elastic material, the elastic diameter of one end of the device mounting portion on the opposite side of the film body can be made larger and easier.
The bearing device can be mounted on the mounting device with less force.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the bearing device according to the present invention, FIG. 2 is a diagram showing an equipment configuration to which the bearing device is applied, FIG. 3 is a sectional view taken along line III-III of FIG. 4 is a perspective view showing the bearing device, FIG. 5 is a longitudinal sectional view at the center thereof, FIG. 6 is a partial side view thereof, and FIGS. 7 to 10 show the operation of the embodiment in comparison with the conventional example. FIG. 11 is a sectional view showing a conventional example, FIG. 12 is a perspective view thereof, and FIG. 13 is an explanatory view of the operation in the conventional example. 14 ... Rotating shaft, 15 ... Bearing device, 17 ... Bearing member, 18 ...
... elastic support member, 19 ... housing, 20 ... film body part, 21 ... equipment insertion part.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16C 27/06 F16C 23/04

Claims (1)

(57) [Claims] 1. A bearing member having one end of a rotating shaft inserted therein for rotatably supporting the bearing, and an elastic support member for holding the bearing member, wherein the support member is a housing for holding the bearing member. And a disk-shaped elastic film member supporting the outer peripheral portion of the housing portion; and a cylindrical device formed on the outer peripheral portion of the film member and fitted into the mounting hole of the mounting device. In a bearing device provided with a mounting portion,
The bearing member and the device mounting portion are arranged on the same plane, and the film portion is displaced toward the rotation shaft from a plane where the bearing member and the device mounting portion are arranged. Characteristic bearing device.