JPH0237030Y2 - - 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]

BACKGROUND ART 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 such as that described in Japanese Utility Model Application Publication No. 55-86193 has been known.

This mounting device welds one of the pipes, for example 1a, to one end of the holding plate 4 when inserting the inlet pipe 1a and the outlet pipe 1b into the pipe mounting holes 3a and 3b of the compressor 2, as shown in FIG. Weld and fix the other pipe 1b at the notch 5 at the other end.
Insert both pipes 1a and 1b into the mounting holes 3a and 3b so that they can be aligned with the mounting holes 3a and 3b.
The annular protrusions 6 formed on the outer circumferences of the pipes 1a and 1b are fixed to the compressor body 2 under pressure by attaching them to the pipes 1a and 3b and tightening the press plate 4 to the compressor body 2 with bolts 8. Inlet and outlet pipe mounting holes 3
The diameters are expanded in steps around the upper ends of the refrigerant a and 3b, and O-rings 9 are disposed at each of these 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 securing 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.

In conventional installation, the direction in which the pipe that is not fixed by welding is installed is determined, but since the pipe could be inserted into the notch at any angle in the circumferential direction, it was possible to insert the pipe in that direction when inserting. This caused inconveniences such as having to re-attach the product because it was sometimes inserted by mistake.

In order to restrict the rotation of the pipe 1, as shown in FIG.
Although it has been proposed to form a rod-shaped projection 6' axially upward from the pipe 1b and to provide a recess on the inner periphery of the notch 5 of the holding plate 4 into which the rod-shaped projection 6' fits, it is still possible to Since the movement is not restricted, it is not possible to insert both pipes 1a and 1b into the mounting hole 3 unless you hold the pipe 1b and the mounting plate with both hands.
It was hard to say that workability was improved.

[Problem that the invention attempts to solve]

SUMMARY OF THE INVENTION An object of the present invention is to provide a compressor pipe attachment device that allows the pipe to be easily attached to the compressor body.

[Means for solving problems]

The present invention is a compressor pipe mounting device that connects and fixes the inlet and outlet pipes to the pipe mounting holes of the compressor body using a mounting plate. It has a bolt hole that passes through it, and has a notch at one end of the mounting plate that has the bolt hole side as the bottom and opens on the compressor body side, the side surface opposite thereto, and the circumferential side, and is inserted into the inner circumferential surface of the notch and the notch. The pipe is characterized in that it is formed so that it cannot rotate relative to the outer periphery of the pipe and cannot move in the axial direction of the pipe.

〔Example〕

As shown in FIGS. 1 and 3, the mounting plate 18 has a bolt hole 19 in the center that penetrates from the side surface on the compressor body side to the opposite side surface. A notch 5a that has a bottom and opens on the compressor body side, the side surface on the opposite side, and the circumferential side.
The other end has a mounting portion 20 on the side surface facing the compressor body, and a connection port 5b on the opposite side. Two parallel walls 16 facing each other are provided on the inner peripheral surface of the notch 5a at one end, and the notch 5 of the parallel wall 16
On the opening side a, a stepped portion 17 is provided to further increase the width. Further, an engagement protrusion 1 is provided at the lower end of the inner circumferential surface of the notch 5a.
5 is formed to protrude inward from the parallel wall 16. Further, the connection port 5b and the attachment portion 20 at the other end may be a normal notch similar to the conventional one, as long as the pipe can be inserted and fixed by welding.

As shown in FIG. 2, the notch 5a of the mounting plate 18
A lower annular protrusion 10 and an upper annular protrusion 11 are provided at the installation end of the pipe 1c to be inserted into the pipe 1c, and a lower annular protrusion 10 and an upper annular protrusion 11 are provided between the two so as to engage with the engagement protrusion 15 of the mounting plate 18. An annular engagement groove 12 is formed. The upper annular convex portion 11 has two parallel walls 16 of the mounting plate 18.
Two parallel notched surfaces 1 with a distance approximately equal to the interval between
3 are provided symmetrically with respect to the pipe axis, and a protrusion 14 is formed on the rear end side of each of the protrusions 14 when inserted into the notch 5a. It is wider than the interval.

[Effect]

As shown in FIG. 1, one pipe 1d is inserted into the connection port 5b at the other end of the mounting plate 18 and fixed by a welded portion 7 such as brazing.

The other pipe 1c is inserted into the notch 5a at one end with the pipe shaft parallel to the bolt hole 19 of the mounting plate 18. The pipe 1c has a protrusion 14 on a parallel notch surface 13.
Even if you try to insert it from the side, the protrusion 14 will not fit into the notch 5a.
Since the pipe 1c protrudes outward from the parallel wall 16 and cannot enter inside, the pipe 1c can be inserted into the notch 5a only with the protrusion 14 on the rear end side. When inserting, the engagement protrusion 15 of the mounting plate 18 and the pipe 1
The mounting plate 18 is inserted into the engagement groove 12 of c.
The parallel notch surface 13 of the pipe 1c is brought into sliding contact with the parallel wall 16 of the pipe 1c. At the same time that the protrusion 14 of the pipe 1c abuts against the stepped portion 17 of the mounting plate 18, 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 18 toward the bottom of the notch 5a, but the pipe 1c and the mounting plate 18 cannot be relatively rotated and cannot be moved in the pipe axial direction. is engaged with. Therefore, since the whole can be held with one hand, the bolts can be temporarily fastened with the other hand while aligning the bolt holes 19. After that, insert the pipe 1c into the notch 5.
While finely adjusting the position within a with one hand, attach the mounting plate 18.
Insert the mounting part 20 at the other end and the mounting end of the unfixed pipe 1c into the mounting hole 3 of the compressor 2, and tighten the bolts with the other hand to fix both pipes to the compressor body 2 by pressure using the mounting plate 18. .

Incidentally, regardless of the above embodiments, the engagement protrusion and the engagement groove may be formed on either the mounting plate or the pipe.
Its formation position can also be determined as appropriate, leaving a portion for insertion into the attachment hole. The position of the protrusion can be determined as appropriate, such as by providing it in the engagement groove, and the shape of the protrusion is not limited to a continuous rod shape, but may be dotted. Further, as long as the pipe can be pressed against the compressor by the engagement protrusion and the engagement groove, 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 only with a specific part of the peripheral side facing toward the bottom of the notch. However, if the two can be engaged so that they cannot rotate relative to each other and cannot move in the axial direction of the pipe, for example, the lower annular convex part and the upper annular convex part of the outer circumference of the pipe are partially continuous, and a parallel notch surface is provided between them. In addition to regulating the relative rotation with the parallel wall on the inner peripheral surface of the notch, other means such as clamping a mounting plate between the lower annular convex part and the upper convex part of the outer circumference of the pipe to prevent the pipe from moving in the axial direction are used. It's good to wear.

[Effect of idea]

According to the present invention, the mounting plate can be held with one hand while the unwelded pipe is engaged, and the bolt can be easily inserted into the pipe mounting hole of the compressor body while aligning, and at the same time, the bolt can be easily inserted with the other hand. Since the pipe can be tightened and screwed together, the work of installing the pipe to the compressor body is simple and extremely efficient.

Furthermore, by providing a protrusion as in the illustrated example, the pipe on the non-fixed side can only be inserted into the notch of the mounting plate from a specific part of the circumferential side, so it is possible to install the pipe in the wrong direction. There is no need to insert it.

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

Claims (1)

[Claims for Utility Model Registration] (1) A compressor pipe mounting device for connecting and fixing inlet and outlet pipes to pipe mounting holes of a compressor body through a mounting plate, wherein the mounting plate has a mounting plate in which the compressor body is fixed. It has a bolt hole penetrating from one side to the opposite side, and one end of the mounting plate is provided with a notch with the bolt hole side as the bottom and openings on the compressor body side, the side opposite thereto, and the circumferential side, and the inner periphery of the notch. A mounting device for a pipe for a compressor, characterized in that the surface and the outer periphery of the pipe inserted into the notch are formed so that they cannot rotate relative to each other and cannot move in the axial direction of the pipe. (2) The scope of the utility model registration claim ( The compressor pipe installation device described in 1).