JPH0953585A - Compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve moldability and assembly workability of a front housing having a boss for mounting and to provide excellent durability though cost is low. SOLUTION: A drive force is transmitted by a clutch mechanism 4 and a body casing 3 and a front housing 2 arranged at the clutch mechanism 4 side of the body casing 3. In a compressor having a plurality of bosses for mounting, a part of a plurality of the bosses for mounting are located on the outer surface of the front housing 2 and between the body casing 3 and the clutch mechanism 4 and a lightening part is formed in bosses 6a and 6b for mounting on the outer surface of the front housing 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor used in, for example, a vehicle air conditioner, and more particularly to a structure of its mounting portion.

[0002]

2. Description of the Related Art Conventionally, compressors used in vehicular air conditioners and the like are well known. This type of compressor is shown in FIG.
As shown in FIG. 3, the driving force is transmitted by the power transmission means 52, and the main body casing 50 and the front housing 51 provided on the power transmission means 52 side of the casing 50 are provided. In addition, the main body casing 50 has mounting bosses 53, 5 for fixing the compressor at a predetermined position.
4, 55 are provided. Mounting bosses 53, 54
Is provided so as to project radially outward of the compressor from the outer surface of the casing 50, and the mounting boss 55 is provided on the outer surface of the main casing 50 opposite to the front housing. The main body casing 50 has a suction port 5
6 and a discharge port 57 are provided.

However, if the mounting bosses 53 and 54 are projected from the outer surface of the main body casing 50 in the radial direction of the compressor, the size of the projecting allowance compressor main body may be increased. Further, the installation position of the mounting bosses 53, 54 is changed to the inner side (center side) of the wall of the main body casing 50 in order to reduce the protrusion amount of the bosses 53, 54 in the radial direction of the compressor. A thin portion is formed on the wall of 50, which is not preferable. Also, the effect of downsizing cannot be expected so much.

Further, in the above-mentioned compressor, since the V belt (not shown) is engaged with the pulley 58 having the V groove of the power transmission means 52, the tension of the belt causes the compressor to operate. Bending moment force will act. However, as described above, the mounting bosses 53, 54
It is difficult to secure a large gap in the axial direction of the compressor between the mounting bosses 53, 54 and the mounting boss 55 in the structure in which the boss is extended from the main body casing 50 in the outer diameter direction, and it is possible to prevent bending moment load and vibration load. However, there is a possibility that the fixing strength of the compressor cannot be sufficiently secured.

Further, when the position of the power source is fixed in advance such as in the engine room of an automobile,
The distance A (hereinafter, simply referred to as a gauge line) from the power transmission means 52 to the mounting bosses 53 and 54 on the power transmission means 52 side is adjusted or designed in consideration of the accommodation space of the compressor. There is a need.

However, since the bosses 53 and 54 are provided in the main body casing 50, the design change for changing the positions of the bosses 53 and 54 breaks the basic shape of the compressor. Therefore, it is difficult to change the design while maintaining the basic shape of the compressor, and the degree of freedom is small.

In order to solve the above problems, it is effective to provide the mounting bosses 53 and 54 on the outer surface of the front housing 51 between the main body casing 50 and the power transmission means 52. . That is, by disposing the mounting bosses 53 and 54 as described above, the projection margin of the bosses 53 and 54 in the radial direction of the compressor is reduced,
The downsizing of the device is achieved. Further, the axial distance between the bosses 53, 54 and the boss 55 in the compressor is increased, and the fixing strength of the compressor against bending moment and vibration load can be improved. Further, it is possible to change the gauge line and design while maintaining the basic shape of the compressor, and it is possible to improve the degree of freedom in installation and design.

By the way, in the compressor as described above, the compressor main body is constructed by the cooperation of the main body casing 50 and the front housing 51, and the front housing 51 is fastened to the main body casing 50. In order to secure the sealing performance of the compressor main body, it is desirable to insert bolts from the power transmission means 52 side of the mounting bosses 53, 54 of the front housing 51 to fasten the main body casing 50 and the front housing 51. .

[0009]

However, in order to insert the bolts into the thick mounting bosses 53 and 54 to fasten the main body casing 50 and the front housing 51, it is necessary to use long bolts. Therefore, for example, it becomes difficult to share the same with bolts used in other parts of the compressor, which may lead to an increase in the number of parts and a decrease in assembly work efficiency.

When mounting bosses 53, 54 are provided on the outer surface of the front housing 51, the bosses 53, 54
54 can be integrally formed on the outer surface of the front housing 51. However, when the mounting bosses 53, 54 are integrally molded with the front housing 51 by casting or the like, the mounting bosses 53, 54 are filled. The amount of molten metal to be treated increases, and the heat capacity of the portion increases. For this reason, the temperature difference from other parts becomes large, thermal deformation easily occurs in the mounting bosses 53, 54, and the formability may deteriorate. Further, if the mounting bosses 53, 54 have large heat capacities, the amount of heat generated during operation of the compressor may not be sufficiently dissipated at this portion, and the compressor may overheat and adversely affect durability.

Further, the thick mounting bosses 53 and 54 may cause an increase in cost due to an increase in materials used during molding. Moreover, there is a possibility that it may not be possible to sufficiently meet the demand for reducing the weight of the compressor.

An object of the present invention is to improve the moldability of the front housing, the sealability with the main body casing side, and the assembling workability when the compressor main body mounting boss is provided on the outer surface of the front housing. It is to provide a compressor that can realize durability at low cost.

[0013]

In order to solve the above-mentioned problems, the compressor of the present invention is provided with a driving force transmitted by a power transmission means, and is provided on the main body casing and the power transmission means side of the main body casing. In a compressor having a front housing and having a plurality of mounting bosses, a part of the plurality of mounting bosses is provided on the outer surface of the front housing and between the main body casing and the power transmission means. In addition, the mounting boss on the outer surface of the front housing is provided with a meat thin portion.

Further, it is desirable that a fastening means for fastening the front housing and the main body casing is provided in the meat fillet portion. Further, in this case, it is desirable that the meat-thickened portion is provided with a spot facing for fastening means.

In the compressor as described above, since the mounting boss on the outer surface of the front housing is formed with a meat thin portion, the bolt for fastening the front housing and the main body casing by the portion corresponding to the meat thin portion. The length can be shortened. Therefore, for example, it is possible to use the compressor in common with other bolts, and it is possible to substantially reduce the number of parts, improve the assembly work efficiency, and easily manage the members at the time of assembly. Cost reduction can be achieved. Also, by shortening the bolt length, it becomes possible to more securely fasten the front housing and the main body casing,
During this time, the sealing property is improved.

Further, by forming the meat slime part,
Since the heat capacity of the mounting boss is reduced, the temperature of the molten metal in the front housing, that is, the mold at the time of molding the mounting boss is made uniform, thermal deformation of the mounting boss is prevented, and moldability is improved.

Further, by forming the meat thin section,
The materials used are reduced, and the cost is reduced.
Further, it becomes possible to meet the demand for weight reduction of the compressor.

Furthermore, since the surface area of the mounting boss is increased by forming the thinned portion, heat dissipation from the mounting boss is promoted. Therefore, overheating of the compressor due to heat generation during operation of the compressor is prevented, and durability of the compressor can be improved.

Further, by providing a counterbore in the meat-thickened portion, it is possible to prevent the bolt head as a fastening means from projecting. Therefore, as shown in an embodiment described later, the mounting boss portion is for mounting the compressor. When inserting the bolt, the interference between the bolt and the front housing and main body casing mounting bolt can be easily avoided.

Further, in the assembly line, the meat squeezed portion can be used as a hook or an engaging portion for clamping when the parts are conveyed, so that the efficiency of the conveyance of the products or semi-finished products in the line can be improved. It is possible to contribute.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a compressor according to the present invention will be described below with reference to the drawings. 1 to 3 show a compressor according to an embodiment of the present invention. In the figure, 1 indicates a compressor body. The compressor body 1 is composed of a front housing 2 and a body casing 3.

A clutch mechanism 4 as a power transmission means is provided on the side opposite to the casing of the front housing 2. The clutch mechanism 4 has a pulley 5 with which a V-belt (not shown) for transmitting a driving force from an external drive source (not shown) is engaged.

On the outer surface of the front housing 2,
Between the main body casing 3 and the clutch mechanism 4, mounting bosses 6a and 6b for fixing the compressor at a predetermined position.
Are provided integrally. The mounting bosses 6a and 6b are provided with holes 13 and 14 through which fixing bolts (not shown) for fixing the compressor are inserted. Holes 13, 14
Are extended in the radial direction of the compressor.

Further, the mounting bosses 6a, 6b are provided with meat-reduced portions 7a, 7b. Meat thin section 7a,
7b includes a spot facing 16 for a bolt 15 as a fastening means.
Is provided. Then, the front housing 2 and the main body casing 3 are fastened via the bolts 15 (FIG. 3). The bolts that are inserted into the holes 13 and 14 and the bolts 15 are designed so that they do not interfere in position.

A terminal 9 on the compressor side of the connector is attached to the attachment boss 6a via a bolt 8. A fitting 12 is provided on the terminal 9. Then, the terminal 9 is fixed to the mounting boss 6a via the bolt 8 inserted through the mounting tool 12.

The terminal 9 on the compressor side of the connector is
An external terminal (not shown) of the connector is connected, and the connection electrically connects the compressor side circuit and the external side (for example, vehicle side) circuit. .

A compression element portion (not shown) is housed inside the casing 3. A suction port 10 and a discharge port 11 are provided on the outer surface of the casing 3. A mounting boss 6c is provided on the outer surface of the casing 3 opposite to the front housing.

That is, in this embodiment, some of the plurality of mounting bosses 6a and 6b provided on the compressor body 1 are provided on the front housing 2, and the other mounting bosses 6c are provided. Is provided in the casing 3.

In the compressor according to the present embodiment, the driving force from a driving source (not shown) such as a vehicle engine or a driving motor is transmitted to the pulley 5 of the clutch mechanism 4, and the driving force causes the compression element portion. Are being driven. Then, the fluid sucked into the compressor body 1 from the suction port 10 is compressed by the compression element portion, and the compressed fluid is sent from the discharge port 11 to the external path.

Further, in the compressor according to the present embodiment, since the mounting bosses 6a and 6b provided on the outer surface of the front housing 2 are provided with the meat-thinned portions 7a and 7b, respectively. The length of the bolt 15 can be shortened by the amount of 7a and 7b. Therefore, for example, the compressor can be used in common with other bolts, and the number of parts can be substantially reduced and the assembling work efficiency can be improved. Further, since the common use of parts is promoted, it becomes possible to facilitate parts management at the time of assembly.

By shortening the bolts, the fastening strength and the fastening reliability between the front housing 2 and the main body casing 3 can be increased, and the sealing performance between them can be improved.

Further, by forming the thin meat parts 7a and 7b on the mounting bosses 6a and 6b, the mounting boss 6a and the mounting boss 6a which are simultaneously molded when the front housing 2 is molded,
Since the heat capacity of 6b can be reduced, the temperature difference of the molten metal in the mold at the time of molding is corrected and the heat deformation of the mounting bosses 6a and 6b is prevented, and the mounting boss 6 is prevented.
It is possible to improve the moldability of a, 6b, and thus the front housing 2.

Further, by molding the thin meat parts 7a and 7b, it is possible to reduce the material used during molding, so that it is possible to reduce the weight and cost of the compressor.

Further, the mounting bosses 6a, 6b are provided with the thinned-out portions 7a, 7b so that the mounting bosses 6a, 6b
Since the surface area of 6b can be enlarged, heat dissipation from the mounting bosses 6a and 6b having a large heat capacity is promoted, the compressor is prevented from overheating during operation, and the durability of the compressor can be improved.

Further, since the counterbore 16 is provided in the meat-thinned portions 7a and 7b, the head of the bolt 15 has the hole 1
It does not project into the inside of the holes 3 and 14. Therefore, interference between the bolt 15 and the fixing bolt can be prevented.

Since the thin meat parts 7a and 7b formed on the mounting bosses 6a and 6b can also be used as engaging parts with hooks or clamps in the assembly line, the products in the line, It can contribute to the efficiency of product transportation.

[0037]

As described above, according to the compressor of the present invention, the meat sunk portion is formed on the outer surface of the front housing and on the mounting boss provided between the main body casing and the power transmission means. Therefore, the moldability of the front housing, the sealability with the main body casing, and the workability of assembling can be improved, and a compressor that exhibits low cost and excellent durability can be obtained.

[Brief description of drawings]

FIG. 1 is a side view of a compressor according to an embodiment of the present invention.

2 is a front view of the compressor shown in FIG. 1. FIG.

3 is an enlarged sectional view of a mounting boss on an outer surface of a front housing of the compressor shown in FIG.

FIG. 4 is a side view of a conventional compressor.

[Explanation of symbols]

 1 Compressor Main Body 2 Front Housing 3 Main Body Casing 4 Clutch Mechanism as Power Transmission Means 5 Pulley 6a Mounting Boss 6b Mounting Boss 6c Mounting Boss 7a Meat-thickened portion 7b Meat-thickened portion 8 Bolt 9 Connector-side terminal of connector 10 Suction Port 11 Discharge Port 12 Fixture 13 Hole 14 Hole 15 Bolt 16 Counterbore

Claims (2)

[Claims] 1. A driving force is transmitted by a power transmission means,
In a compressor having a main body casing and a front housing provided on the power transmission means side of the main body casing and having a plurality of mounting bosses, a part of the plurality of mounting bosses is provided in the front housing. A compressor characterized in that it is provided on the outer surface and between the main body casing and the power transmission means, and that a mounting boss on the outer surface of the front housing is provided with a meat thin portion. 2. The meat stuffed portion is provided with fastening means for fastening the front housing and the main body casing, and the meat stuffed portion is provided with a spot facing for the fastening means. Compressor.