JPH0932769A - Compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compressor in which moldabilities of a main body casing and a rear boss are improved, transporting work and assembling work can be facilitated by improving handleability and the degree of freedom in installation and design can be improved. SOLUTION: In a compressor, a compressor attaching rear boss 6c provided on the back surface 13 side as the opposite driving input side of a main body casing 3 is constituted independent of the main body casing 3.

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, for example, air conditioners for vehicles are well known. In this type of compressor, as shown in FIG. 5, a drive input means 52 for inputting a drive force, a front housing 51 provided on the drive input means 52 side, and a cooperation of the front housing 51. And a main body casing 50 forming an outer shell of the compressor main body. A rear boss 55 is formed integrally with the main body casing 50 on the rear surface 59 which is the opposite drive input side of the main body casing 50. Also, the main body casing 5
0 is a mounting boss 53 protruding in the radial direction of the compressor,
54 are provided.

A suction port 56 and a discharge port 57 are provided in the main body casing 50, and the fluid (for example, refrigerant) sucked into the compressor from the suction port 56 is compressed and the compressed fluid is discharged. It is designed to be sent from the port 57 to an external route.

Further, in the compressor as described above, since the main body casing 50 and the rear boss 55 are integrally formed, the rear boss 55 can be simultaneously formed when the main body casing 50 is formed (for example, cast). have.

[0005]

However, in the integrated structure of the main body casing 50 and the rear boss 55, since the molten metal (for example, aluminum, aluminum alloy, etc.) is filled up to the tip of the rear boss 55 when the main body casing 50 is molded, Inevitably, the flow path length of the molten metal in the mold becomes long. Therefore, the uniformity of the temperature of the molten metal in the mold is impaired, and a cavity may be formed in the molded product, that is, the main body casing 50 or the rear boss 55.

Also, the rear boss 55 is a main body casing 50.
Since it protrudes from the back surface 59 of the main body casing, there is a possibility that the handling property when transporting the main body casing itself or the assembled compressor and the workability when assembling the main body casing may be reduced.

When the compressor is installed in a limited space such as in the engine room of a vehicle,
The design of the size and position of the rear boss 55 may need to be changed as necessary. However, in the integrated structure of the main body casing 50 and the rear boss 55, even if the design change of only the rear boss 55 is required, it is necessary to remanufacture the entire mold, and therefore the change becomes large. The degree of freedom to change the design is low.

The object of the present invention is to improve the moldability of the main body casing and the rear boss and to improve the handleability of the main body casing and the rear boss to facilitate transportation and assembly work, and also to improve the degree of freedom in installation and design. To provide a possible compressor.

[0009]

In order to solve the above-mentioned problems, the compressor of the present invention has a rear boss for mounting the compressor, which is provided on the back side which is the opposite drive input side of the main body casing. It is characterized by being configured separately from.

Further, it is desirable that the rear surface of the main body casing be provided with a groove for engaging the rear boss.

The rear boss is attached to the main body casing,
For example, it is desirable to be fixed by fastening means such as bolts, and in this case, it is desirable that the rear boss is provided with a spot facing for fastening means.

In the compressor as described above, since the rear boss provided on the rear surface of the main body casing and the main body casing are formed separately, both members can be molded separately. Therefore, as compared with the main body casing-rear boss integrated structure, the flow path length of the molten metal in each mold at the time of molding the main body casing and the rear boss is shortened, the temperature is made uniform, and a cavity in the molded product is not formed. Generation is prevented and moldability is improved.

The rear boss may be attached to the main body casing at the stage of shipping or installing the compressor, for example. Until then, both members can be handled separately. Work can be facilitated.

Further, by constructing the rear boss and the main casing separately, it is possible to easily change the design of only the rear boss regardless of the die for molding the main casing, so that the space for accommodating the compressor can be improved. It is possible to change the design appropriately according to the installation specifications, etc., and improve the degree of freedom in installation and design. Further, when various rear bosses are present, the main body casing can be used as a common component, and there is no fear that the cost will be significantly increased even if the number of models having different rear boss specifications is increased.

Further, by forming a groove on the rear surface of the main body casing for engaging the rear boss, the rear boss can be firmly and surely fixed to the rear surface of the main body casing, and the rear boss can be axially arranged in the compressor. Since the protrusion can be minimized, it is possible to contribute to downsizing of the device.

The rear boss is provided on the rear surface of the main body casing.
For example, it can be easily fixed by fastening means such as bolts.
Further, in this case, by providing the rear boss with a spot facing for fastening means, the protrusion of the bolt head can be prevented and the bolt length can be shortened, so that it can be shared with bolts used for other parts. Become.

[0017]

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 4 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 casing 3.

A clutch mechanism 4 for inputting a driving force is provided at the end 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 the outside is engaged.

The front housing 2 is integrally formed with mounting bosses 6a and 6b for fixing the compressor at a predetermined position. The mounting bosses 6a and 6b are provided to face each other as shown in FIG. Further, the mounting bosses 6a and 6b are provided with a meat squeeze 7.

A terminal 9 on the compressor side of the connector is attached to the attachment boss 6a via a bolt 8. Specifically, the terminal 9 is integrally provided with a fixture 12 to the compressor body, and the fixture 12 is provided with a bolt 8
And the terminal 9 is directly attached to the attachment boss 6a.

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

A compression element portion (not shown) is housed inside the casing 3, and a fluid (for example, a refrigerant) sucked from the suction port 10 is compressed by the compression element portion.
The compressed fluid is sent from the discharge port 11 to the external path. A rear boss 6c is provided on the rear surface 13 of the casing 3 on the side opposite to the drive input. The main body casing 3 and the rear boss 6c are configured separately. Specifically, a groove 14 is formed on the back surface 13, and the groove 1
The rear boss 6c is adapted to engage with 4. The rear boss 6c is fastened and fixed to the back surface 13 by a bolt 15 as a fastening means (FIG. 4).

The rear boss 6c is provided with a spot facing 16 for the bolt 15.

In the compressor according to the present embodiment, for example, a driving force from a driving source (not shown) such as a vehicle engine or a driving motor is transmitted to the clutch mechanism 4,
The driving force compresses the fluid (for example, refrigerant) sucked from the suction port 10 in the compression element portion, and the compressed fluid is sent from the discharge port 11 to the external path.

By the way, in the compressor according to this embodiment, since the main body casing 3 and the rear boss 6c are constructed as separate members, the main body casing 3 and the rear boss 6c can be molded separately. Therefore, the flow path length of the molten metal in each mold at the time of molding the main body casing 3 and the rear boss 6c can be significantly shortened as compared with that of the main body casing-rear boss integrated structure, so that the temperature is made uniform. The formation of cavities in the molded product is prevented, and the moldability can be improved.

Further, the rear boss 6c to the body casing 3
Can be attached, for example, at the time of shipping or installation of the compressor, and until then, both separate materials can be handled separately. Therefore, it is possible to improve the handleability when the main body casing 3 itself or the assembled compressor is transported and the workability when the main body casing 3 is assembled.

Further, by forming the main body casing 3 and the rear boss 6c as separate bodies, the main body casing 3 and / or
Alternatively, the design of the rear boss 6c can be easily changed, so that the design can be appropriately changed according to the housing space of the compressor, and the degree of freedom in installation and design can be improved. Further, in this case, either one of the casing 3 and the rear boss 6c can be used as a common component, and even if the number of models with different specifications of the rear boss 6c or the casing 3 increases, the cost does not increase significantly.

Further, by engraving the groove 14 on the rear surface 13 of the main body casing 3 with which the rear boss 6c engages, the rear boss 6c can be firmly and surely fixed to the rear surface 13 of the main body casing 3. , Rear boss 6
Since it is possible to minimize the protrusion of c in the axial direction of the compressor, it is possible to contribute to downsizing of the compressor.

Further, since the rear boss 6c is provided with a counterbore for fastening the bolt 15, it is possible to prevent the head portion of the bolt 15 from protruding. Further, since the bolt 15 can be shortened by providing the counterbore 16, it can be shared with bolts used for other parts of the compressor.

[0030]

As described above, when the compressor of the present invention is used, the main body casing and the rear boss are formed separately, so that the main body casing and the rear boss are improved in moldability and are easy to handle. Therefore, it is possible to obtain a compressor which can improve the degree of freedom in installation and design by facilitating transportation and assembly work.

[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 a rear view of the compressor shown in FIG. 1. FIG.

FIG. 4 is an enlarged cross-sectional view taken along line IV-IV of the compressor shown in FIG.

FIG. 5 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 5 Pulleys 6a, 6b Mounting Boss 6c Rear Boss 7 Meat Thinning 8 Bolts 9 Compressor Terminal of Connector 10 Suction Port 11 Discharge Port 12 Mounting Fitting to Compressor Main Body 13 Rear surface 14 Groove 15 Bolt 16 Counterbore

Claims (3)

[Claims] 1. A compressor characterized in that a rear boss for mounting the compressor, which is provided on the back side which is the opposite drive input side of the main body casing, is configured separately from the main body casing. 2. The compressor according to claim 1, wherein a groove with which the rear boss is engaged is formed on the rear surface of the main body casing. 3. The compressor according to claim 1, wherein the rear boss is fastened to the main body casing, and the rear boss is provided with a spot facing for fastening means.