JPH0237036Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mounting device for inlet and outlet pipes of a compressor used in automobile air conditioners and the like.

[Conventional technology]

Conventionally, as a pipe attachment device for connecting a hose for passing refrigerant to a compressor of an automobile air conditioner or the like, a device described in Japanese Utility Model Application Publication No. 55-86193 is known.

As shown in FIG. 4, with this mounting device, when inserting the inlet pipe 1a and the outlet pipe 1b into the pipe mounting holes 3a, 3b of the compressor body 2, one of the pipes, for example 1a, is attached to one end of the holding plate 4. Welded part 7
The other pipe 1b is inserted into the notch 5 at the other end so that it can be aligned with the mounting holes 3a and 3b, and both pipes 1a and 1b are fitted into the mounting holes 3a and 3b. pipes 1a and 1b by tightening the presser plate 4 to the compressor body 2 with bolts 8.
An annular convex portion 6 formed on the outer periphery of the compressor body 2 is pressed and fixed to the compressor body 2. The diameters around the upper ends of the inlet and outlet pipe mounting holes 3a and 3b are expanded in steps, and O-rings 9 are disposed therein to prevent leakage of the refrigerant.

However, this device connects the pipe 1 to the compressor body 2.
When the pipe is attached to a pipe, one pipe 1a is welded and fixed to the holding plate 4, but the other pipe 1b rotates freely within the notch 5 and can also move in the axial direction of the pipe, making handling inconvenient. . If you have to hold the pipe 1b and the holding plate 4 with both hands, you cannot insert both pipes 1a and 1b into the mounting hole 3. Then, while ensuring the direction of the unwelded pipe 1b with one hand, tighten the bolt 8.
The work involved screwing the parts together was difficult and time consuming, and the workability was extremely poor.

Further, in the conventional installation, as shown in FIG. 4, the two pipes are arranged symmetrically around the bolt 8, and there is no difference in appearance, so it is sometimes possible to erroneously attach the left and right directions.

In order to restrict the rotation of the pipe 1, as shown in FIG.
A rod-shaped projection 6 is formed axially upward from the presser plate 4.
It has been proposed to provide a recess into which the rod-shaped projection 6 fits on the inner periphery of the notch 5, but even so, the movement of the pipe 1b in the axial direction is not restricted, and it is difficult to say that the workability has been improved. It was hard to say.

[Problem that the invention attempts to solve]

SUMMARY OF THE INVENTION An object of the present invention is to provide a compressor pipe installation device that allows the installation of pipes to a compressor body to be performed easily and without error.

[Means for solving problems]

The present invention is a compressor pipe mounting device that connects and fixes inlet and outlet pipes to pipe mounting holes of a compressor body using a mounting plate, and the mounting plate has one end of the pipe attached to the side surface of the compressor body. A cylindrical mounting part with a protruding outer diameter that fits into the mounting hole, a connection port that connects one pipe end to the circumferential side that intersects with the side surface, and a communication hole that communicates the connection port and the mounting part. The center of the mounting plate has a bolt hole penetrating from the side on the compressor body side to the opposite side, and the other end of the mounting plate has a bolt hole with the bolt hole side as the bottom and a side surface on the compressor body side and the side opposite thereto. It has a notch that opens on the peripheral side, and the inner peripheral surface of the notch and the outer periphery of the other pipe are
The pipe can be inserted from the circumferential side of the other end of the mounting plate toward the bottom of the notch, but is characterized in that it is formed so as to be relatively immovable and immovable in the axial direction of the pipe.

〔Example〕

As shown in FIG. 1, the mounting plate 22 has a mounting portion 20 projecting in a cylindrical shape that fits into a pipe mounting hole of the compressor on the side surface of the compressor body side at one end, and one pipe 1d on the circumferential surface of the one end. Connection port 19 for connecting the end of
, and further includes a communication hole 18 that communicates the connection port 19 with the mounting portion 20 . In addition, the mounting plate 22
A bolt hole 21 is formed in the center of the compressor, passing through from the side surface on the compressor body side to the side surface on the opposite side.

Furthermore, as shown in FIGS. 1 and 3, the other end of the mounting plate 22 is provided with a notch 5 whose bottom is on the bolt hole 21 side and which opens on the compressor body side, the opposite side surface, and the circumferential side. It is growing. Two parallel walls 16 facing each other are provided on the inner peripheral surface of the notch 5.
A step 17 is provided on the opening side of the notch 5 of the parallel wall 16 to further increase the width. Furthermore, an engagement protrusion 15 is formed at the lower end of the inner peripheral surface of the notch 5 so as to protrude inward from the parallel wall 16.

As shown in FIG. 2, a lower annular convex portion 10 and an upper annular convex portion 11 are provided at the attachment side end of the pipe 1c to be inserted into the notch 5 of the attachment plate 22, and the above-mentioned attachment An annular engagement groove 12 is formed to engage with the engagement protrusion 15 of the plate 22. The upper annular convex portion 11 has two parallel notched surfaces 13 at a distance approximately equal to the distance between the two parallel walls 16 of the mounting plate 22.
are provided symmetrically with respect to the pipe axis, and a protrusion 14 is formed at the rear end of insertion into the notch 5, respectively.

[Effect]

Connect the end of one pipe 1d to the connection port 19 of the mounting plate 22 by brazing or the like, and insert the other pipe 1c into the notch 5 with the pipe shaft parallel to the bolt hole 21 of the mounting plate 22. do. However, the pipe 1c cannot be inserted from the protrusion 14 side due to the protrusion 14. When inserting, the engaging protrusion 15 of the mounting plate 22 and the engaging groove 12 of the pipe 1c are fitted, and the pipe 1 is inserted into the parallel wall 16 of the mounting plate 22.
The parallel cut surfaces 13 of c are brought into sliding contact. At the same time that the protrusion 14 of the pipe 1c abuts the step 17 of the mounting plate 22, the engagement groove 12 abuts the innermost part of the engagement protrusion 15 and stops.

In this state, the unfixed pipe 1c can be taken in and out from the circumferential side of the mounting plate 22 toward the bottom of the notch, but the pipe 1c and the mounting plate 22 are unable to rotate relative to each other and cannot move in the pipe axial direction. engaged. Therefore, while finely adjusting the position of the pipe 1c within the notch 5, the mounting portion 20 communicating with the pipe 1d fixed to the connection port 19 of the mounting plate 22 and the mounting end of the other pipe 1c are connected to the compressor 2. Mounting hole 3
, and bolts are passed through the bolt holes 21 of the mounting plate 22 to press and fix both pipes to the compressor body 2.

Note that the projection 14 allows the pipe 1c to be inserted into the mounting plate 22 in only one direction, and is not necessarily necessary. Regardless of the above-mentioned embodiments, the engagement protrusion and the engagement groove may be formed on either the mounting plate or the pipe, and the position where they are formed can be determined as appropriate, leaving the portion inserted into the mounting hole. Further, as long as the pipe can be brought into pressure contact with the compressor by these engagement protrusions and engagement grooves, it is not necessary to provide the lower annular protrusion. Furthermore, the notch of the mounting plate and the outer periphery of the pipe to be inserted into the notch are not limited to the means of the above embodiment, and the pipe can be inserted from the circumferential side of the mounting plate toward the bottom of the notch; For example, if a parallel notch surface can be provided between the lower annular convex part and the upper convex part on the outer circumference of the pipe, relative rotation with the parallel wall on the inner peripheral surface of the notch part can be achieved. In addition, other means may be used, such as interposing a mounting plate between the lower annular convex portion and the upper convex portion on the outer periphery of the pipe to prevent the pipe from moving in the axial direction.

[Effect of idea]

According to the present invention, since the external shape of the combined pipe and mounting plate is asymmetrical, there is no need to confuse the left and right directions during installation, and it is possible to engage unwelded pipes. In this state, you can hold the mounting plate with one hand and insert it into the pipe mounting hole of the compressor body while aligning it. At the same time, the work space around the bolt hole is expanded, so you can easily tighten and screw the bolt with the other hand. , the work of installing pipes to the compressor is simple, error-free, and extremely efficient.

[Brief explanation of the drawing]

Figure 1 shows the mounting plate according to the present invention, and Figure 1a
is a plan view thereof, and FIG. 1b is a side view thereof. Second
The figure shows the main parts of the pipe according to the present invention, and Fig. 2b
2a is a side view, and FIG. 2a is a sectional view taken along the - line in FIG. 2b. Figure 3 shows the main parts of the mounting plate according to the present invention, Figure 3a is a plan view, and Figure 3b is a third
FIG. 3 is a sectional view taken along the - line in FIG. FIG. 4 is a partially cutaway side view showing a state in which the pipe is attached to the compressor body using a conventional attachment device. DESCRIPTION OF SYMBOLS 1... Pipe, 2... Compressor body, 3... Mounting hole, 4... Holding plate, 5... Notch, 10... Lower annular protrusion, 11... Upper annular protrusion, 12... Engagement groove,
13...Parallel notch surface, 15...Engagement convex portion, 16...
...Parallel wall, 18...Communication hole, 19...Connection port, 2
0... Mounting part, 21... Bolt hole, 22... Mounting plate.

Claims (1)

[Scope of utility model registration request] This is a compressor pipe mounting device for connecting and fixing inlet and outlet pipes to pipe mounting holes in a compressor body using a mounting plate, and the mounting plate has one end attached to the side surface on the compressor body side into the pipe mounting hole. a cylindrical mounting portion with a protruding outer diameter that fits, and a connection port that connects one pipe end to a circumferential side surface that intersects with the side surface;
comprising a communication hole that communicates the connection port and the mounting portion,
The center of the mounting plate has a bolt hole that penetrates from the side on the compressor body side to the opposite side, and the other end of the mounting plate has a bolt hole with the bottom on the bolt hole side and on the compressor body side, the side opposite to that side, and the circumferential side. The inner peripheral surface of the notch and the outer periphery of the other pipe are such that the pipe can be inserted from the peripheral surface on the other end side of the mounting plate toward the bottom of the notch, but cannot be rotated relative to each other. and a mounting device for a pipe for a compressor, characterized in that the pipe is formed so as to be immovable in the axial direction of the pipe.