JPH092593A - Nozzle of oil changer - Google Patents

Abstract

PURPOSE: To provide a nozzle device for an oil changer having a stopper with a core of wire for preventing the tube from falling off. CONSTITUTION: Inside a flexible tube 24 connected in a manner of being sealed with a nozzle body 23 of a metal, a metal wire 22 constituting a core is passed through in a manner of being fixed with play, and a stopper 25 for preventing the tube 24 from falling off is attached to the wire 22 at its projecting part 22a extending beyond the forward end of the tube 24. In case, when the tube 24 is inserted into an oil pan through a gauge pipe, part of the tube breaks apart because of being pressed against, for example, a burr sticking out in the passage for the tube 24 or a sharp edge or because of deterioration of the tube due to oil, the part of the tube 24 broken apart is caught by the stopper 25 and held in a manner of not being separable from the wire 22. Therefore, prevention is possible as regards the trouble that a fragment of the tube 24 falls into an oil pan and remains therein semi permanently.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can surely prevent an oil tube for exchanging oil such as automobile engine oil from breaking and breaking in the middle and dropping a part thereof into the oil pan. The present invention relates to a nozzle device for an oil changer, which makes it possible to easily confirm that a wire has reached the bottom surface of an oil pan from the feel of the palm or the contact sound.

[0002]

2. Description of the Related Art Replacing work of engine oil or torque converter oil of an automobile is roughly classified into an upper pulling type and a lower pulling type according to the oil draining method. The top pull-out type is a method of sucking and pulling oil from the gauge pipe leading to the oil pan.
The bottom extraction type is a system in which the plug on the bottom of the oil pan is removed to allow natural oil drainage. In general, the lower pull-out type is a natural oil drainage that relies on gravity, and therefore has the drawback that the vehicle body must be jacked up or the like due to work demands and it takes time to set up. For this reason, more and more gas stations are installing top-up type oil changers that automate drainage and refueling.

For example, an oil changer disclosed in Japanese Patent Laid-Open No. 63-318395 "torquer oil changing device" has a main body of an exchange machine having an oil discharge container and an oil supply container as shown in FIG. 5 attached to the present specification. Nozzle 3 is connected to the tip of hose 2 extending from 1, and after confirming that nozzle 3 inserted from gauge tube 4 into oil pan 5 of torque converter oil has reached the bottom, drainage and refueling work is performed. I try to do it automatically.

However, according to this, when the nozzle 3 is a metal tube, the insertion of the nozzle 3 becomes difficult and insufficient when the gauge tube 4 has a bent portion. When the nozzle 3 is a resin tube, the gauge tube 4 can be inserted to the innermost part while following the bent portion,
Since the nozzle 3 is soft, it is difficult for the operator to feel the touch when it reaches the bottom surface of the oil pan 5, and it is difficult to detect the arrival. Moreover, the nozzle 3 itself deforms too much due to heat or the like, and the lower end of the nozzle 3 floats up from the bottom of the oil pan,
It will be difficult to completely remove the oil. In other words, in any case, the situation where the lower end of the nozzle 3 is not sufficiently inserted easily occurs, and then the oil remains in the oil pan 5 uncollected.

In order to meet such a demand, for example, in Japanese Unexamined Patent Publication No. 3-289490 "Oil draining nozzle for automobiles", as shown in FIG. 6 attached to the present specification, a flexible resin tube 6 is coaxially arranged. Further, there is disclosed a nozzle device in which an elastic metal wire 7 having a strong restoring force such as a piano wire is loosely fitted and a tip 7a thereof is slightly projected from the tube 6. According to this, since the tube 6 is made of resin, it can be inserted into the innermost part of the gauge tube 4 which is meandering, and moreover, the feeling when the lower end of the metal wire 7 reaches and abuts on the bottom surface of the oil pan, The arrival is surely detected by the sound, and the function of the metal wire 7 as the core material prevents the tube 6 from being lifted and deformed from the bottom of the oil pan due to the softness or thermal deformation of the tube 6, so that the oil can be completely removed. It will be possible.

[0006]

However, in the above-mentioned conventional nozzle device, when the tube 6 is inserted into the oil pan, the resin tube 6 is pressed against a burr or the like in the oil pan, or the tube is exposed to oil. It may deteriorate or break in the middle of the tube. Once the broken tube 6 has fallen into the oil pan, it cannot be semi-permanently collected unless the troublesome work of removing many bolts on the upper and lower split surfaces of the engine and removing the lower oil pan. There were challenges.

On the other hand, in Japanese Unexamined Patent Publication No. 147507/1993, "Nozzle of Oil Changer for Automobile", as shown in FIG. A nozzle device is disclosed in which the wire 11 is configured to be freely inserted and removed, and the wire 11 is pulled out of the tube 10 at the time of oil discharge or oil supply, and the flow passage cross section is enlarged by that much to increase the speed of oil extraction and supply. There is. However, in this case, when the tube 10 is inserted into the oil pan, if the resin tube 10 is pressed against burrs or the like in the oil pan or the tube is deteriorated by the oil and the tube breaks in the middle of the tube, the oil There was a problem that the tube 10 dropped in the pan could not be easily collected. Further, since the wire 11 has to be pulled out from the tube 10 and attached after the oil is drained and refilled, the work is very troublesome and the oil may leak from the wire insertion portion of the nozzle body 12. Furthermore, in the case of a vehicle model in which the hood of the vehicle is shallow, the wire
However, there were some problems such as not being able to pull out enough.

Therefore, an object of the present invention is to fixedly insert and support a wire in a flexible tube, and fix a stopper having an outer diameter larger than the inner diameter of the tube to the protruding portion of the wire protruding from the tip of the tube. Accordingly, it is an object of the present invention to provide a nozzle device for an oil changer, which simplifies the oil exchange work and enables a tube that has been broken and dropped during the tube to be locked by a stopper for recovery.

[0009]

The present invention has a first guide hole and a second guide hole communicating with each other, and a hose for supplying and discharging oil via a connector in the first guide hole. And a flexible tube made of resin of a predetermined length, the flexible tube having one end of the tube sealingly connected to a second guide hole of the nozzle body, A wire, wherein one end of the wire is fixed to the nozzle body, an intermediate portion of the wire extends in the axial direction of the tube along the inside of the tube, and the other end of the wire has the other end of the tube. An oil changer comprising: the wire protruding from the tube; and a stopper having an outer diameter larger than the inner diameter of the tube, the stopper being provided on the protruding part of the wire protruding from the other end of the tube. Nozzle equipment By providing, in which to achieve the object.

Further, according to the present invention, a seal ring and a seal ring retainer are provided between the inner diameter of the second guide hole of the nozzle body and the outer diameter of the tube to seal the nozzle body and the tube. The object is achieved by providing the device characterized in that it carries out the fixing.

According to the present invention, the wire is made of metal or resin, and the stopper is fixed to the protruding tip of the wire by caulking. It achieves the purpose.

According to the present invention, the wire is made of metal, and the stopper is welded to the protruding tip of the wire or a similar method, screwed to each other, or fixed by a snap ring. The object is achieved by providing the above-mentioned device.

Furthermore, the present invention achieves the above object by providing the above-mentioned apparatus, characterized in that the metal wire is fixed to the nozzle body by caulking, welding, or a similar method. Is.

[0014]

According to the above construction, the core wire is fixedly loosely inserted into the flexible tube sealingly connected to the nozzle body, and the tube is prevented from coming off at the wire protruding portion protruding from the tip of the tube. Provide a stopper. As a result, when the tube is inserted into the oil pan via the oil gauge tube, it is pressed against burrs or sharp edges exposed in the insertion passage of the tube, or the tube is deteriorated by oil and is broken from the middle. Even if it happens, the broken tube is locked by the stopper, so you can pull out the wire and collect it, and the fragment of the tube will fall into the oil pan and remain semipermanently Inconvenience can be eliminated.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a vertical sectional view showing an embodiment of the nozzle device of the oil changer of the present invention. 2 is a cross-sectional view of an essential part showing a modified example of the stopper part shown in FIG. 1, FIG. 3 is a cross-sectional view of an essential part showing another modified example of the stopper part shown in FIG. 1, and FIG. It is a principal part sectional view which shows another modified example of the stopper part shown in FIG.

In the nozzle device 21 of the oil changer shown in FIG. 1, one end of the wire 22 is fixedly attached to the nozzle body 23 so that the wire 22 cannot be detached from the nozzle body 23, which simplifies the oil change work and makes the resin tube 24
Near the lower end 22a of the wire 22 protruding from the other end of
Stopper 2 having an outer diameter larger than the inner diameter of the tube 24
5 is provided to prevent the broken tube 24 from falling off.

The nozzle body 23 comprises a metal elbow tube having a first horizontal guide hole 23a and a second vertical guide hole 23b which communicate with each other. Both guide holes 23a,
The reference numerals 23b intersect each other at a right angle in the nozzle body 23, and female screws are screwed over the opening surface within a predetermined depth range. A hose (not shown) for oil discharge and supply is connected to the horizontal guide hole 23a via a connector (not shown). First, one end of the tube 24, in which the seal ring 26 and the seal ring retainer 27 are temporarily assembled at the tip, is inserted into the vertical guide hole 23b. Then
By tightening the seal ring retainer 27 that is screwed into the female screw, the annular seal ring 26 is compressed and deformed to a flat shape, so that the space between the inner peripheral surface of the vertical guide hole 23b and the outer peripheral surface of the tube 24 is air- and liquid-tight. Seal on. The tube 24 held in the vertical guide hole 23b extends downward from the nozzle body 23 by about 1 m, for example.

In the case of the embodiment, a wire insertion hole 23c is formed in the upper part of the nozzle 23 along the axial extension of the vertical guide hole 23b. The wire 22 having a length slightly longer than the length of the tube 24 is inserted into the wire insertion hole 23c,
The brim portion 22b integrated with the upper end of the wire 22 is caulked and fixed to the upper surface of the nozzle body 23, whereby the wire 22
Are fixed to the nozzle body 23. A seal member 28 such as an O-ring is fitted in the wire insertion hole 23c to prevent oil leakage through the wire insertion hole 23c. The wire 22 used in the embodiment is composed of a piano wire or the like having an outer diameter of about 0.2 to 0.5 mm, and is coaxially loosely inserted into the tube 24 having a diameter of about 6 mm, and the lower end 22 a thereof is the tube 2.
4 extends about 5 to 10 mm from the tip. The above-mentioned disk-shaped stopper 25 is fitted into the lower end 22a of the wire, and is caulked and fixed by using a caulking tool. The wire 22 may be made of resin or the like other than metal, and the stopper 25 can be fixed by crimping similarly.

The stopper 25 has an outer diameter of the tube 24.
Larger than the inner diameter of Therefore, even if the tube 24 is cut from the middle and a part of the tube 24 falls off, the tube 24 at the drop-off portion is locked by the stopper 25 and prevented from coming off. Therefore, when the tube 24 is inserted into the oil pan via the gauge tube, the tube 24 may be pressed against burrs or sharp edges exposed in the insertion passage of the tube 24, or the tube may be deteriorated by the oil, so that the tube 24 may be broken from the middle. Even if it breaks, the broken tube 24
Is locked by the stopper 25 and is not separated from the wire 22. As a result, the inconvenience that the fragments of the tube 24 fall into the oil pan and remain semipermanently can be eliminated.

Further, since the wire 22 is fixed inside the tube 24 and cannot be pulled out to the outside, it is possible to secure the inner diameter of the tube 24 larger than the outer diameter of the wire 22 to a certain extent so that the wire 22 itself can flow. It does not interfere with the flow of oil as resistance.

Further, an annular seal ring 26 and a seal ring retainer 27 are fitted on the tube 24, and the seal ring retainer 27 is pressed to crush the seal ring 26 to some extent, thereby tightly engaging the seal ring 26 with the tube 24. It is possible to prevent the tube 24 from coming off and to seal the tube 24 at the same time.

When the wire 22 and the stopper 25 are fixed to each other by caulking, welding or a similar method, the number of parts can be reduced, and when the fixing is performed by screwing, the stopper can be replaced. However, it is convenient, or when the snap ring is used, the stopper can be replaced and the positioning accuracy of the stopper can be improved.

Further, in the above embodiment, the case where the stopper 25 is fixed to the wire 22 by caulking is taken as an example, but as shown in FIG. 2, the stopper 25 is welded or a method similar thereto. It is also possible to fix it to the, and this can reduce the number of parts. FIG.
Alternatively, the stopper 25 may be screwed onto the wire 22, and the locking nut 30 (a double nut is more preferable) may be screwed onto and fixed to the wire 22 until it comes into contact with the stopper 25. Further, as shown in FIG. 4, a reduced diameter portion is formed at the lower end 22a of the wire 22,
The C-ring 31 that locks the upper surface of the stopper 25 with the different-diameter step surface of the reduced diameter portion and engages with the annular groove of the reduced diameter portion
Thus, the lower surface of the stopper 25 can be locked. Both the fixing by the nut 30 and the fixing by the C ring 31 are preferable in that they can be replaced with new ones when the stopper 25 is accidentally damaged. Ma C
When the ring 31 is used, the stopper 25 can be accurately positioned with one touch.

Furthermore, the nozzle body 23 of the wire 22
The wire 22 can be easily and accurately fixed to the nozzle body 23 by caulking. However, it is a matter of course that this fixing may be performed by welding or a similar method.

[0025]

As described above, according to the present invention,
In a flexible tube that is sealingly connected to the nozzle body,
Since the metal wire serving as the core is fixedly loosely inserted and the wire protruding portion protruding from the tube tip is provided with the stopper for preventing the tube from coming off, there are the following advantages.

When a tube whose core is a wire is inserted into an oil pan via an oil gauge tube, it may be pressed against burrs or sharp edges exposed in the insertion passage of the tube, or the tube may be deteriorated by oil. Even if the tube breaks in the middle, the broken tube is locked by the stopper and does not separate from the wire, which causes broken pieces of the tube to fall into the oil pan and become semi-permanent. It is possible to eliminate the inconvenience that remains.

The wire is fixed so as not to be pulled out from the tube. However, by ensuring the inner diameter of the tube to be relatively large with respect to the outer diameter of the wire, the wire itself becomes flow path resistance and obstructs oil flow. It is possible to smoothly change oil.

Since the seal ring and the seal ring retainer are provided between the inner diameter of the vertical guide hole of the nozzle body and the outer diameter of the tube to seal and fix the nozzle body and the tube, the tube is annular. Fitting the seal ring and the seal ring retainer, compressing the seal ring by compressing the seal ring retainer, and tightly engaging the seal ring with the tube to simultaneously prevent the tube from coming off and seal. You can

If the wire and the stopper are fixed to each other by caulking, the number of parts can be reduced. Alternatively, if the fixing is performed by welding or a similar method, the number of parts can be reduced. Alternatively, the stopper can be replaced by fixing the above by screwing. Alternatively, if the fixing is performed using a snap ring, the stopper can be exchanged and the positioning accuracy of the stopper can be improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a nozzle device of an oil changer of the present invention.

FIG. 2 is a sectional view of an essential part showing a modified example of the stopper portion shown in FIG.

FIG. 3 is a side view of a main portion showing another modified example of the stopper portion shown in FIG.

FIG. 4 is a cross-sectional view of main parts showing still another modified example of the stopper part shown in FIG.

FIG. 5 is a schematic side view showing a schematic configuration of an oil changer.

FIG. 6 is a vertical cross-sectional view showing an example of a nozzle device of an oil changer.

FIG. 7 is a vertical cross-sectional view showing another example of a conventional nozzle device of an oil changer.

[Explanation of symbols]

 21 Nozzle device of oil changer 22 Wire 22a Wire lower end 23 Nozzle body 23a First (horizontal direction) guide hole 23b Second (vertical direction) guide hole 24 Tube 25 Stopper 26 Seal ring 27 Seal ring retainer

Claims (8)

[Claims] 1. A nozzle body having a first guide hole and a second guide hole communicating with each other, and a hose for supplying and discharging oil is connected to the first guide hole via a connector, A flexible tube made of resin having a predetermined length, one end of which is sealably connected to a second guide hole of the nozzle body; and a wire, A wire having one end fixed to the nozzle body, an intermediate portion of the wire extending in the axial direction of the tube along the inside of the tube, and the other end of the wire protruding from the other end of the tube; A nozzle device for an oil changer, comprising: a stopper having an outer diameter larger than an inner diameter of the tube and provided on a protruding portion of a wire protruding from the other end of the tube. 2. The apparatus according to claim 1, wherein a seal ring and a seal ring retainer are provided between an inner diameter of the second guide hole of the nozzle body and an outer diameter of the tube, the nozzle body and the tube. Said device, characterized in that it seals and fixes between them. 3. The device according to claim 1 or 2, wherein the wire is made of metal or resin, and the stopper is fixed to the protruding tip of the wire by caulking. . 4. The apparatus according to claim 1, wherein the wire is made of metal, and the stopper is fixed to the protruding tip of the wire by welding or a similar method. The device. 5. The apparatus according to claim 1, wherein the wire is made of metal, and the stopper is screwed and fixed to the protruding tip of the wire. apparatus. 6. The device according to claim 1, wherein the wire is made of metal, and the stopper is fixed to a protruding tip of the wire by a snap ring. 7. The apparatus according to claim 1 or 2, wherein the wire is made of metal, and the wire is fixed to the nozzle body by caulking. 8. The apparatus according to claim 1, wherein the wire is made of metal, and the wire is fixed to the nozzle body by welding or a similar method.