JPH078867Y2 - Housing in compressor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a housing mainly used in a scroll compressor.

(Prior Art) Conventionally, as a housing of this type of compressor, a housing body having a cylindrical shape is provided, a support surface for a compression element is provided on the upper side of the body, and a radial center is provided at an intermediate portion in the up-down direction of the body. The bearing part for supporting the drive shaft of the motor for driving the compression element is provided at the lower end of the main body,
For example, a support leg portion protruding downward and a plurality of spigot portions for receiving and supporting the stator of the motor are provided on the support leg portion, for example, Japanese Patent Laid-Open No. 62-253992.
It is already known in the publication.

Therefore, as shown in FIG. 4, the spigot portions provided on the support leg portions have a receiving surface (26a) for receiving and supporting the upper end surface of the stator (41) of the motor (4), and the receiving surface (26a). (26a) is provided with an arc-shaped projection (26b) having a low height which is integrally provided so as to project downward from the outer side in the radial direction of (26a), and the inner peripheral surface (26c) of this projection (26b) is Finishing is performed concentrically with the bearing portion of the housing main body on which the upper side of the drive shaft is supported, and the spigot portion (26) of the supporting leg portion (25) is provided with the motor (4). By inserting and supporting the stator (41), the stator (41) is positioned with respect to the housing body, and the bearing portion provided in the housing body and a lower bearing portion that supports the lower side of the drive shaft are provided. I try to align the axes.

Further, it is necessary to confirm whether or not the inner peripheral surface (26c) of the protrusion (26b) of each of the spigot portions (26) and the bearing portion provided on the housing body are accurately aligned with each other. This is done by applying a gauge to the inner peripheral surface (26c) of (26b).

(Problems to be solved by the invention) By the way, when the above confirmation work is performed, the height of the protrusion (26b) provided on each of the spigot portions (26) should be low. From the protrusion (26b)
It is difficult to apply the gauge to the inner peripheral surface (26c) of each of the spigots, and the inner peripheral surface (26c) of each of the spigot portions (26), that is, each of the protrusions (26b) with which the gauge abuts, is the support leg. Since the part (25) is divided into a plurality of parts, there is a problem in that it is very difficult to perform the checking work using the gauge.

The present invention has been made in view of the above problems, and an object thereof is to accurately align the inner peripheral surfaces of the protrusions of the spigot portions with the bearing portions provided on the housing body. An object of the present invention is to provide a compressor housing capable of reliably and easily confirming whether or not the compressor is broken.

(Means for Solving the Problems) In order to achieve the above object, in the present invention, a housing body (21) having a cylindrical shape is provided, and a compression element (3) is provided at a radial center portion of the body (21). A bearing surface (26) for supporting a drive shaft (5) of a motor (4) for driving the motor (4) and receiving an end face of a stator (41) of the motor (4) in the axial direction of the main body (21); A plurality of spigot parts (26) provided with an arc-shaped projection (26b) that projects from the outside of the receiving surface (26a) and engages with the circular outer edge of the stator (41).
In a housing of a compressor provided with a supporting leg portion (25) having ..., An inner peripheral surface (25) of the supporting leg portion (25).
In a), a cylindrical finish surface (27) having the same center as the center (O) of the circle forming the inner peripheral surface (26c) of the protrusion (26b).
Is formed.

(Operation) Then, the protrusion (26b) in each of the spigot portions (26)
When confirming whether or not the inner peripheral surface (26c) of the shaft and the bearing portion of the drive shaft (5) provided in the housing body (21) are accurately aligned, the support leg portion is used. This is done by applying a gauge to the finished surface (27) formed on (25), and this finished surface (27) is the same as the center (O) of the inner peripheral surface (26c) of the protrusion (26b). Since the support leg portion (25) has a center and is continuously formed, by applying the gauge to the finishing surface (27), the confirmation work can be performed accurately and surely. In addition, the gauge can be easily brought into contact with the finished surface (27) that serves as a reference for the confirmation work.

(Example) An example will be described with reference to the drawings.

FIG. 3 shows a scroll-type compressor, in which an upper housing (2A) is fixed to the inner upper part of a hermetic casing (1), and a fixed scroll (31) is provided above the upper housing (2A). While supporting a compression element (3) composed of a movable scroll (32), a lower housing (2B) is arranged on the inner lower side of the hermetic casing (1), and these upper and lower housings (2A) (2B) are arranged. A motor (4) consisting of a stator (41) and a rotor (42) is interposed in the middle part of the above, and a fixing bolt (B) is inserted from the lower housing (2B) into the upper housing (2A). Due to
The stator (41) of the motor (4) is sandwiched and fixed between the upper and lower housings (2A) and (2B), and the drive shaft (5) coupled to the rotor (42) of the motor (4).
Are rotatably supported by upper and lower bearings (6) and (7) mounted on the housings (2A) and (2B).

In addition, the upper side of the drive shaft (5) is interlocked with the movable scroll (32) of the compression element (3) via a transmission mechanism (8), and the movable scroll (32) and the upper housing (2A). ) And an Oldham ring (9) interposed between the movable scroll (32) and the fixed scroll (31) to prevent the movable scroll (32) from rotating. I am trying to drive it.

Further, as apparent from FIGS. 1 and 2, the upper housing (2A) is composed of a cylindrical housing body (21) having a predetermined height, and the compression body is provided on the upper side of the body (21). The fixed scroll (31) constituting the element (3)
Bearings (24) for supporting the upper bearing (6) at the center of the main body (21) in the up-down direction and in the radial center, while forming the support surfaces (22) (23) of the movable scroll (32). ) Are integrally provided, and the upper part of the drive shaft (5) is rotatably supported by the bearing (24) via the bearing (6), while the lower part is provided at the lower end of the main body (21). The support leg portion (25) having a substantially cylindrical shape projecting toward the base is integrally provided, and the stator (41) of the motor (4) is received and supported at a plurality of circumferential positions of the support leg portion (25). The spigot part (26) is formed.

Further, each of the inlay portions (26) is a flat receiving surface formed on the lower end surface side of the supporting leg portion (25) so as to receive and support the upper end surface of the stator (41) in the motor (4). (26a) and a low-height arc-shaped projection (26b) integrally projecting downward from the outside in the radial direction of the receiving surface (26a), and the projection (26b) Inner surface (26c)
Is finished concentrically with the bearing portion (24) of the housing body (21) on which the upper side of the drive shaft (5) is supported.

Thus, the upper end portion side of the stator (41) of the motor (4) is inserted into and supported by the spigot portions (26) provided on the support leg portions (25), thereby the stator (41). Is positioned with respect to the upper housing (2A), and the fixing bolt (B) is interposed between the upper housing (2A) and the lower housing (2B) with the motor (4) interposed. When tightening together through
The bearing portion (24) provided on the upper housing (2A) side
And the bearing portion (28) provided in the lower housing (2B) are aligned with each other to accurately support the drive shaft (5) between the bearing portions (24) and (28). .

Thus, in the upper housing (2A) of the compressor as described above, each of the spigot parts (26) is provided at a lower portion on the inner peripheral surface (25a) side of the support leg part (25) provided in the housing body (21). ), A cylindrical finish surface (27) having the same center (O) as the inner peripheral surface (26c) of the protrusion (26b) is formed.

Specifically, as shown in FIGS. 1 and 2,
The inner peripheral surface (26c) of the protrusion (26b) in each of the spigot portions (26) is formed by using a cutting tool or the like, and the housing main body (2
The inner peripheral surface (26c) is finished on a locus of radius (R) centered on the center (O) of the bearing portion (24) provided in 1). Below the support leg portion (25) in the housing body (21) with a radius (r) centered on the center (O) of the bearing portion (24) and being smaller than the radius (R). Inner surface (25
The finished surface (27) is formed on the inner peripheral lower side of the support leg (25) by cutting the entire region (a) with the cutting tool.

Then, the protrusion (26b) in each of the spigot portions (26)
In order to confirm whether or not the inner peripheral surface (26c) and the bearing portion (24) provided on the housing body (21) are accurately aligned, the protrusion (26
Instead of applying a gauge to the inner peripheral surface (26c) of b), the confirmation work is performed by applying the gauge to the finish surface (27) formed on the support leg (25). .

As described above, the support leg portion has the locus of the radius (r) having the same center as the center (O) serving as a reference when finishing the inner peripheral surface (26c) of each protrusion (26b). If the finished surface (27) is formed on the inner peripheral surface (25a) side of (25),
By applying the gauge to the finished surface (27), the inner peripheral surface (26c) of each protrusion (26b) is accurately aligned with the bearing portion (24) of the housing body (21). Even if the gauge is not directly applied to the inner peripheral surface (26c) side of each of the protrusions (26b), it is possible to accurately confirm whether or not each of the protrusions (26b) is present.

In addition, the finished surface (27) is formed on the inner peripheral surface (25a) side of the support leg portion (25) at a predetermined height over the entire circumference. Therefore, the gauge of the gauge with respect to the finished surface (27) is formed. The contact can be made surely and easily, and the confirmation work by the gauge can be performed accurately.

Although the scroll type compressor has been described in the above embodiments, the present invention is not limited to the scroll type compressor, and may be applied to other compressor housings.

(Effects of the Invention) As described above, the housing of the compressor according to the present invention has a housing body (21) having a plurality of spigot portions (26) for receiving and supporting the stator (41) of the motor (4). Of the support leg (25) of the inner peripheral surface (25
Since a cylindrical finished surface (27) having the same center (O) as the inner peripheral surface (26c) of the arcuate projection (26b) forming the spigot portion (26) is formed on the a) side, The finished surface (2
By applying a gauge to 7), the inner peripheral surface (26c) of the protrusion (26b) in each of the spigot portions (26) and the bearing portion (24) provided in the housing body (21) are aligned with each other. It has become possible to reliably and easily confirm whether or not it is being performed accurately.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a housing of a compressor according to the present invention, FIG. 2 is a bottom view of the same, FIG. 3 is a vertical sectional view showing the entire structure of the compressor, and FIG. 4 is a conventional example. FIG. (21) …… Housing body (25) …… Supporting leg (25a) …… Inner peripheral surface (26) …… Inlay part (26a) …… Receiving surface (26b) …… Protrusion (26c) …… Inner circumference Surface (27) …… Finishing surface (3) …… Compression element (4) …… Motor (41) …… Stator (5) …… Drive shaft (O) …… Center

Claims (1)

[Scope of utility model registration request] 1. A cylindrical housing main body (21) is provided, and a drive shaft (5) of a motor (4) for driving a compression element (3) is bearing-supported at the radial center of the main body (21). A receiving surface (26a) that receives the end surface of the stator (41) of the motor (4) in the axial direction of the body (21), and the receiving surface (2a).
Support leg (25) having a plurality of spigot parts (26) ... Equipped with arcuate projections (26b) protruding from the outside of 6a) and engaging with the circular outer edge of the stator (41). A housing of a compressor provided with an inner peripheral surface (26a) of the arcuate projection (26b) on the inner peripheral surface (25a) of the support leg (25).
A housing for a compressor, characterized in that it forms a cylindrical finish surface (27) having the same center as the center (O) of the circle forming c).