JPH0313594Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a compressor attachment mechanism for attaching a compressor of a vehicle air conditioner to an object to be attached to a vehicle.

(Prior Art) Conventionally, as shown in FIG.
1. A compressor mounting mechanism for a vehicle air conditioner is known in which the compressor is screwed and fixed using a washer 32.

(Problems to be Solved by the Invention) In the conventional compressor mounting mechanism for a vehicle air conditioner, the compressor 20, which has a high rigidity, is attached to the mounting body 10, which also has a high rigidity, with a hexagonal bolt 30 and a hexagonal nut 31. Since the compressor 2
When the compressor 20 operates, mechanical vibrations, particularly axial vibrations, of the compressor 20 are directly transmitted to the engine (not shown) via the attached body 10, causing unpleasant noise inside the vehicle.

In view of the above-mentioned conventional problems, the purpose of the present invention is to alleviate the transmission of mechanical vibrations of the compressor to the engine and prevent unpleasant noise from occurring inside the vehicle.
To provide a compressor mounting mechanism for a vehicle air conditioner that can prevent a compressor from deforming in a direction perpendicular to a driven shaft and prevent the compressor from resonating with vibrations in a direction perpendicular to an engine shaft.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a plurality of first through holes provided in the mounting portion of the compressor so as to penetrate in the same direction as the axis of the compressor; In the compressor mounting mechanism for a vehicle air conditioner, the compressor mounting mechanism for a vehicle air conditioner is formed by inserting a screw into a second through hole provided in the mounting body so as to be coaxial with the first through hole and screwing it into a nut. A bush is provided in at least one of the gap between the first through hole and the screw or the gap between the second through hole and the screw, and the bush includes an outer cylinder made of a rigid material and provided concentrically with a gap between them. It has an inner cylinder, a stretchable elastic member fitted into the gap, and a contact part that makes line contact or point contact with the inner wall surface of the outer cylinder and the outer wall surface of the inner cylinder along the circumferential direction. and a rigid support member embedded within the elastic member.

(Function) According to the present invention, the plurality of second through holes provided in the gap between the screw and the plurality of first through holes provided so as to penetrate in the same direction as the shaft of the compressor, or the plurality of second through holes provided in the attached body. A bushing is provided in at least one of the gaps between the through hole and the screw, and the bushings are fitted into the gap with an outer cylinder and an inner cylinder made of a rigid material, which are provided concentrically with a gap between them. A rigid member having a stretchable elastic member and a contact portion that makes contact or point contact along the circumferential direction of the inner wall surface of the outer cylinder and the outer wall surface of the inner cylinder, and is embedded in the elastic member. When the compressor is operated, the rigid support member provided on the bush has very low frictional resistance against mechanical vibrations of the compressor, especially vibrations in the axial direction. Therefore, vibrations are damped by the stretchable elastic member, and the rigid support member provided on the bush protects against forced displacement in the direction perpendicular to the axis. Displacement is restrained because it is in line or point contact with the surface.

(Embodiment) FIGS. 1, 3, and 4 show a first embodiment of the present invention, and the same components as those of the conventional example are denoted by the same reference numerals. That is, 10 is an object to be mounted, such as a mount bracket, and 11 is a plurality of through holes. 20 is a compressor, and 21 is a plurality of attachment parts provided on the compressor 20. 22 is the mounting part 2
A plurality of first through holes are provided in the compressor 1 and penetrate in the same direction as the driven shaft of the compressor 20, and the inner diameter thereof is set larger than the inner diameter of the second through hole 11. 23 is a pulley attached to the tip of the driven shaft of the compressor 20. 30 is the first through hole 22
and a hexagonal bolt 3 inserted through the second through hole 11.
1 is a hexagonal nut screwed onto the hexagonal bolt 30;
32 and 33 are washers.

40 is a bush fitted into the first through hole 21; 41 is an inner cylinder made of a rigid material, for example metal;
Both ends of the inner cylinder 42 are set to a length such that they protrude from both ends of the outer cylinder 41. 43 is the outer cylinder 4
1 and the outer wall surface of the inner cylinder 42. The elastic member is a stretchable elastic member, for example, a vibration-proof rubber. Reference numeral 44 denotes a rigid support member, such as a metal ring, which is in continuous line contact with the inner wall surface of the outer cylinder 41 and the inner wall surface of the inner cylinder 42 along the circumferential direction and has an oval cross-sectional shape.

According to the first embodiment, when the compressor 20 is operated, the ring 44 provided on the bushing 40 provides frictional resistance in the axial direction against mechanical vibrations of the compressor 20, especially vibrations in the axial direction. Since this is very small, the vibration isolating rubber 43 buffers the vibration in the axial direction, and the vibration transmitted to the engine is reduced. Therefore, unpleasant noise generated inside the vehicle due to vibrations of the compressor 20 is reduced. Furthermore, when the crank pulley provided on the drive shaft of the engine (not shown) and the pulley 23 provided on the driven shaft of the compressor 20 are connected by a belt (not shown), a tensile force is generated in the direction perpendicular to the driven shaft. However, a ring 44 provided on the bush 40 connects the outer cylinder 41 and the inner cylinder 4 of the bush 40.
2, the compressor 40
Forced displacement in a direction perpendicular to the axis of the engine is restrained, and a crank pulley of the engine (not shown) and a pulley 44 of the compressor 40 are connected by appropriate tension of a belt (not shown). Further, since the outer cylinder 41 and the inner cylinder 42 of the bushing 40 are supported by a highly rigid ring, resonance of the compressor due to vibrations perpendicular to the axis of the engine does not occur.

In the above description, the cross-sectional shape of the ring 44 in the circumferential direction is an oval shape, but the present invention is not limited to this, and it goes without saying that the ring 44 having a perfect circular cross-sectional shape can also be applied.

Figures 5a and 5b show a first modification of the bushing 40 of the present invention, in which 44a is a ring whose cross section in the circumferential direction is an ellipse, and the inner and outer edges are circumferential. The bush 40 is formed with cutouts at predetermined intervals in the direction.
The inner wall surface of the outer cylinder 41 and the outer wall surface of the inner cylinder 42 are embedded in the vibration isolating rubber 43 so as to be in line contact with each other at a predetermined interval along the circumferential direction.

According to the first modification, the ring 44a is provided with a notch in the circumferential direction, so that the ring 44a has a structure that is easily bent in the axial direction. Ring 44 in Figure 5c
b is a further modified example of the ring 44a shown in FIG. 5b, in which the notches are made even smaller, and the effect obtained from this is the same as that of the ring 44a shown in FIG. 5b.
Same as a.

6a and 6b show a second modified example of the bush 40 of the present invention, 44c is a ring-shaped support member, and a plurality of support members are provided radially at predetermined intervals in the circumferential direction and the axial direction. It is made of a piece of fiber.

According to the second variant, the ring-shaped support member 44
c are each formed of a fiber-like piece,
The structure is more flexible in the axial direction than the first modification.

Figures 7a and 7b show a third modification of the present invention, in which 44d are spherical support members, eight of which are provided at equal intervals in the circumferential direction.

According to the third modification, a spherical support member 44d
is embedded in the vibration isolating rubber 43 so as to make point contact with the inner wall surface of the outer cylinder 41 and the outer wall surface of the inner cylinder 42 at a predetermined interval along the inner circumferential direction.
Frictional resistance in the axial direction is very small. Further, in the explanation of the third modification, the support member 44d is described as a sphere, but it is not limited to this, and it goes without saying that an ellipsoid whose major axis is set in the radial direction can also be applied.

The structure, operation, and effect of the parts whose explanations are omitted in the explanation of the first to third modified examples are the same as those of the embodiment shown in FIGS. 1, 3, and 4.

(Effect of the invention) As explained above, the present invention provides a plurality of first through holes provided in the gap between the screw and the plurality of first through holes provided so as to penetrate in the same direction as the axis of the compressor, or a plurality of first through holes provided in the attached body. A bush is provided in at least one of the gaps between the second through-hole and the screw, and the bush includes an outer cylinder and an inner cylinder made of a rigid material, which are provided concentrically with a gap between them, and a A rigid member embedded in the elastic member that has a contact portion that makes line contact or point contact with the fitted stretchable elastic member and the inner wall surface of the outer cylinder and the circumferential direction of the inner cylinder. When the compressor is operated, the rigid support member provided on the bush has very low frictional resistance against mechanical vibrations of the compressor, especially vibrations in the axial direction. Therefore, the stretchable elastic member buffers vibrations in the axial direction, and the vibrations transmitted to the engine are reduced. Therefore, it has the effect of reducing unpleasant noises generated inside the vehicle due to vibrations of the compressor.

Also, when the engine and compressor are connected by a belt, a tensile force is generated in a direction perpendicular to the axis of the compressor, but the rigid support member provided on the bush comes into contact with the outer cylinder and inner cylinder of the bush, respectively. Therefore, forced displacement in the direction perpendicular to the axis of the compressor is restrained, and the fan belt has the effect that the compressor and the engine can be connected with an appropriate tensile force. Further, since the outer cylinder and the inner cylinder of the bush are supported by a rigid support member, there is an effect that resonance of the compressor due to vibrations in a direction perpendicular to the engine axis does not occur.

[Brief explanation of the drawing]

1 and 3 to 7a and 7b show a compressor mounting mechanism of a vehicle air conditioner according to an embodiment of the present invention. FIG. 2 is a partial cross-sectional view of a compressor mounting mechanism for a vehicle air conditioner according to a conventional example, and FIG. 3 is a front view showing how the compressor is mounted on the mounting body. FIG. 4 is a cross-sectional view taken in the direction of arrow A-A shown in FIG. 3 of a bush constituting the compressor mounting mechanism of the vehicle air conditioner of the present invention, and FIG. 5a is a partial cross-sectional view of the vehicle air conditioner of the present invention. A front cross-sectional view showing a first modified example of a bushing that constitutes a compressor mounting mechanism of an air conditioner; FIG. A side sectional view in the direction of arrow B-B in FIG. 5a showing
FIG. 5c is a side sectional view showing an applied example of the first modification, and FIG. 6a is a front view showing a second modification of the bushing constituting the compressor mounting mechanism of the vehicle air conditioner of the present invention. A sectional view, FIG. 6b is a side sectional view in the direction of the arrow C-C in FIG.
Fig. 7a is a front sectional view showing a third modification of the bushing constituting the compressor mounting mechanism of the vehicle air conditioner of the present invention, and Fig. 7b is the compressor mounting mechanism of the vehicle air conditioner of the present invention. FIG. 7 is a side view in the direction of arrow D-D in FIG. 7a showing a third modification of the bushing. In the figure, 10... object to be mounted (mount bracket), 11, 22... through hole, 20... compressor,
21... Mounting part, 30... Hexagonal bolt, 31...
Nut, 40...butsuyu, 41...outer cylinder, 42
... Inner cylinder, 43 ... Stretchable elastic member (vibration isolating rubber), 44 ... Rigid support member, 44a, 44b ...
...Ring, 44c... Supporting member, 44d... Sphere.

Claims (1)

[Claims for Utility Model Registration] (1) A plurality of first through holes provided in the mounting portion of the compressor so as to penetrate in the same direction as the axis of the compressor, and what are the first through holes? In a compressor mounting mechanism for a vehicle air conditioner, in which a screw is inserted into a second through hole coaxially provided in the object to be mounted and is screwed with a nut, the first through hole and the screw are screwed together with a nut. A bush is provided in at least one of the gap or the gap between the second through hole and the screw, and the bush includes an outer cylinder and an inner cylinder made of a rigid material that are provided concentrically so as to have a gap therebetween, and in the gap. A fitted stretchable elastic member and a contact portion that makes line contact or point contact with the inner wall surface of the outer cylinder and the outer wall surface of the inner cylinder along the circumferential direction, and is embedded in the elastic member. 1. A compressor mounting mechanism for a vehicle air conditioner, characterized in that the compressor mounting mechanism comprises a rigid support member. (2) The compressor mounting mechanism for a vehicle air conditioner according to claim 1, wherein the support member is formed of a ring having a circular or oval cross-sectional shape. (3) The supporting member shall be formed of a ring having a circular or oval cross-sectional shape and having notches at predetermined intervals in the circumferential direction on at least one of the inner peripheral edge or the outer peripheral edge. A compressor mounting mechanism for a vehicle air conditioner as set forth in claim 1 of the registered utility model. (4) The vehicle air conditioner according to claim 1, wherein the support member is a fiber-shaped piece provided radially at predetermined intervals in the circumferential direction and the axial direction. Compressor mounting mechanism. (5) Claim 1 of the utility model registration claim characterized in that the support member is formed of at least three spheres arranged at equal intervals in the circumferential direction or an ellipsoid whose major axis is set in the radial direction. Compressor mounting mechanism for vehicle air conditioners. (6) The vehicle air conditioner according to any one of claims 1 to 5 of the utility model registration claim, characterized in that the stretchable elastic member is made of vibration-proof rubber. Compressor mounting mechanism.