JPH01176802A - rotary injection tube - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an injection tube for injecting stored liquid into a reservoir in a small hydraulic device having a reservoir.

[Prior Art] In a small hydraulic device such as a hydraulic device equipped with an oil tank, there is an inlet for injecting stored liquid into a reservoir, which is a storage container, and a rotary injection pipe for removing air from the reservoir when injecting the stored liquid. is provided. In this rotary injection tube, the injection tube for injecting the stored liquid into the reservoir has a threaded hole in the flange formed on the injection tube side, a stopper hole in the reservoir wall, and is attached to the reservoir wall with screws. There are many things that are. In addition, separate attachments are attached to the reservoir wall by screwing members or by welding.

[Problems to be Solved by the Invention] In the method for installing the injection tube as described above, once the injection tube is attached to the reservoir wall, the injection tube opening is fixedly installed in a fixed direction with respect to the reservoir. It turns out. Therefore, depending on the installation position of the device, it may not be possible to inject the stored liquid from the injection port, so it was necessary to consider the installation location of the injection pipe in advance so that the injection port faces in the optimal direction. In addition, the reservoir wall requires time-consuming processing such as screw fixing, special-shaped holes such as ellipses, and welding, which poses the problem of making the installation of the injection pipe complicated. .

[Means for Solving the Problems] In order to solve the above problems, the present invention employs the following configuration.

That is, the rotary injection tube according to the present invention is an injection tube that is attached to the wall surface of the reservoir and injects the stored liquid into the reservoir. The present invention is characterized in that a fixing means is provided for fixing the tube portion to be penetrated to the reservoir wall so as to be rotatable about its axis.

[Function] The injection tube can be easily fastened and fixed to the reservoir wall in any direction by tightening the fastener that is threaded onto the injection tube with the reservoir wall sandwiched between the retainer fitted around the injection tube base. can.

Embodiment FIG. 1 is a sectional view showing the structure of an embodiment of the present invention. The rotary injection tube 1 has a double structure consisting of an injection tube 2 and a ventilation tube 3, and is configured to serve as an inlet for storing liquid stored in the reservoir 5 and as an air vent during injection of the stored liquid. The injection tube 2 has a bent shape as a whole, and one opening 2a is attached to the reservoir wall 6 and penetrates into a hole 7, and a sealing member 9 is interposed between the end and the reservoir wall. The sealing member fixing retainer 10 enclosed in this manner is fitted. A collar 11 is further fitted into the retainer IO. Further, a threaded portion 13 is carved in the injection tube base 2a, and a lock nut 14 is attached to this threaded portion 13.
are screwed together from the outside. By tightening this lock nut 14 against the reservoir wall, the injection tube 2 can be fastened and fixed to the reservoir wall surface 6. At this time, the sealing member 9 comes into close contact with the reservoir wall surface 6 and the injection tube base 2b, and the attachment of the reservoir wall keeps the peripheral edge of the hole 7 watertight. When the lock nut 11 is released, the injection tube 2 can be rotated about an axis H perpendicular to the reservoir wall 6. The distal end 2C of the injection tube is bent at an angle θ with respect to the vertical axis H from the injection tube base 2b. The tip opening 2d of the injection tube, which serves as the storage liquid injection port, is sealed with a cap 17 equipped with a filter 16.

A vent pipe 3 eccentric to the central axis of the injection pipe 2 is provided on one inner inner wall of the injection pipe 2 .

Further, the end portion 3b of the ventilation pipe 3 is open, and a ventilation hole 19 is formed near the opening, and this ventilation hole 19 communicates with the atmosphere side. This vent hole 19 is located at the opening 2 of the injection tube 2.
When d is sealed with the cap 17, air is vented through the opening.

When using the rotary injection tube configured as described above, the injection tube 2 can be rotated 360 degrees by loosening the lock nut I4 as described above, so the reservoir installation is done so that the injection port is in the optimal position. You can adjust it to suit your orientation. In addition, the injection tube 2 has a distal end 2 at an angle θ with respect to the axis H.
Since C is bent, the inlet 2d is oriented so that it is easy to inject the stored liquid even in a narrow place with obstacles, such as under a vehicle.
can be directed.

When injecting the stored liquid, the cap 17 is removed and the stored liquid is injected from the injection port 2d, and the stored liquid passes through the injection tube 2 and is injected into the reservoir 5 from the open end 2a. The space within the reservoir 5 gradually becomes smaller as the injection progresses, but at this time, the air passes through the ventilation pipe 3 and is discharged to the outside from the open end 3b, so that the injection is carried out quickly.

The injection tube 2 can be attached to the reservoir wall surface 6 by simply tightening the lock nut 14 as described above, and the processing for attachment only needs to be performed on the injection tube 2. No special processing is required.

In the above embodiment, the retainer IO was fitted to the injection tube opening 2a side inside the reservoir 5, and the lock nut 14 was screwed to the outer part of the base 2b, but in some cases, as shown in FIG. The mounting positions of the retainer lO and the lock nut 14 may be reversed. Note that it is clear that this injection tube can be used as an injection tube for other liquid containers.

[Effects of the Invention] As is clear from the above description, the rotary injection tube according to the present invention allows the optimal direction of the injection port to be easily and freely set during assembly depending on the installation location of the injection tube. Processing is easy and there is no need to perform complicated processing on the reservoir wall side as in the past.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the configuration of an embodiment of the present invention attached to a reservoir, and FIG. 2 is a diagram showing a modified embodiment. 2... Injection pipe 6... Reservoir wall surface 9... Seal member 10... Retainer for fixing the seal member] 3... Threaded portion 14... Lock nut patent applicant Shimadzu Corporation

Claims (1)

[Claims] (1) An injection tube that is attached to the wall of the reservoir and injects the stored liquid into the reservoir.The middle part is bent at a certain angle, and the axis of the tube that penetrates into the reservoir is A rotary injection tube characterized in that it is rotatable around the center and is provided with a fixing means for fixing it to a reservoir wall.