JPS6263295A - Fitting for fluid instrument - 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] (Industrial application field) FIELD OF THE INVENTION This invention relates to fluidic device mounting hardware.

(Prior Art) As a fluid device, a pipe joint that is attached to a pressure device such as a cylinder at one end and connects a flow pipe to the other end will be described as an example.

As shown in FIG.
It consists of a joint main body part 14 into which the pipe joint 10 is inserted and connected, and a screw 16 as a fluid device mounting fitting for screwing the pipe joint 10 to a pressure device such as a cylinder.

The joint body 14 includes a locking pawl 18 that sinks into the outer wall of the inserted flow pipe 12 to prevent the flow pipe 12 from being pulled out, and a locking claw 18 that locks the flow pipe when the flow pipe 12 is pulled out. 12 and a release ring 20 for releasing the biting into the outer wall. 22 is a seal ring.

Then, wrap the sealing tape on the screw 16 and
The pipe fitting 10 can be screwed onto a pressure device by using a wrench on the NAND portion 6.

To connect the flow pipe 12, it is only necessary to insert the flow pipe 12 into the pipe joint body 14, and the locking claw 18 is embedded in the outer wall of the flow pipe 12 to prevent the flow pipe 12 from being pulled out. Further, the seal ring 22 is brought into close contact with the outer wall of the flow path pipe 12 to form a seal. To remove the flow path pipe 12, the release ring 20 may be pushed in to release the locking pawl 18, and the flow path pipe 12 can be easily removed.

(Problems to be Solved by the Invention) However, the conventional pipe joint 10 and the screw 16 as a fluid device mounting bracket have the following problems.

As mentioned above, insertion and removal of the flow path pipe 12 can be performed extremely easily with one touch. The mechanism for inserting and removing the flow pipe 12 on the side of the joint body 14 has been devised to the point that there is almost no room for improvement, and the flow pipe 12 can be inserted and removed in a short time of 1 to 2 seconds. There is.

However, when attaching or detaching a pipe fitting IO to a pressure device, etc., it is necessary to turn the screw 16 using a spanner, monkey key, etc., and it takes a long time, approximately 30 to 40 seconds, to attach or detach one pipe fitting. There are some problems.

In this case, the time required for attaching and detaching the pipe joint 10 and inserting and detaching the flow path pipe 12 is too unbalanced.

This situation occurs because there is an overly strong fixed idea that parts of fluid equipment such as pipe fittings are connected using so-called screws, and the connection takes a long time. The reality was that I had no doubts even though it took time.

Manufacturers of parts such as cylinders even provide completed cylinders with internal threads in advance, assuming that the pipe joint will naturally be screwed onto the part to which the pipe joint is connected.

It is true that if the connection is made through a sealing tape or other sealing member, the screw connection will have perfect sealing performance and will have high mounting strength.

However, the inventor believes that in a relatively low-pressure circuit such as air pressure, the connection mechanism of the flow pipe 12 to the joint body side is sufficient to provide sufficient sealing and fixing even with a simple mechanism using the above-mentioned locking body 18. In view of this, even in the same circuit, on the side where the pipe fitting 10 itself is connected to the pressure mechanism, it is possible to seal with a simpler mechanism, even if it does not have as strong a mounting strength as the above screw. The present invention was completed as a result of repeated studies based on the knowledge that it could be installed easily and efficiently with one touch.

That is, an object of the present invention is to provide a fluid device mounting bracket that can connect a fluid device to a pressure device efficiently with one touch, and with good sealing and fixing properties.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes the following configuration.

In other words, in a fluid device mounting bracket for fixing a fluid device such as a pipe joint to a required mounting hole of a pressure device such as a cylinder, there is a tightening device that has a hole in the center that also serves as a fluid passage and into which a tool such as a hex wrench is fitted. a chuck metal fitting that is fitted onto the fastening metal fitting and is provided with a plurality of elastic chuck pieces that have locking parts at their tips projecting toward the inner wall of the mounting hole; and the fastening metal fitting is a hexagon wrench or the like. chuck piece diameter expanding means for expanding the chuck piece of the chuck fitting against its elastic force by being rotated about half a turn by a tool, and pressing the locking part at the tip of the chuck piece against the inner wall of the mounting hole; a sealing member disposed on the outer periphery of the tightening fitting or chuck fitting;
The present invention is characterized by comprising a press-contact means for press-contacting the seal member to the inner wall of the mounting hole by rotating the fastening metal fitting.

(Example) Hereinafter, preferred embodiments of the present invention will be described in detail, taking as an example a case where a pipe joint is fixed.

In FIG. 1, the reference numeral 30 indicates a fluid device mounting bracket, and the reference numeral 32 indicates a pipe joint.

34 is a pressure device such as a cylinder device, and a fluid passage 36
It has an attachment hole 38 at the end for attaching a pipe fitting 32. In the figure, the mounting hole 38 is shown as a female threaded hole for connecting a conventional pipe fitting having a gas thread.

The above fluid device mounting bracket 30 has a pipe fitting 32 in the core screw hole.
It is provided as an alternative means for attaching a gas inlet.

Each part of the fluid device mounting bracket 30 will be explained.

Reference numeral 40 denotes a fastening metal fitting, which has a size that allows it to be loosely inserted into the mounting hole 38, and has a male thread 42 formed on the outer peripheral surface of one end.
A folded portion 44 having a U-shaped cross section is formed on the other end, into which the pipe joint 32 is fitted. Tightening fitting 4
A hexagonal hole 46 into which a hexagonal wrench can be fitted is formed in the center of the hexagonal hole 46 (FIG. 2), and the hexagonal hole 46 communicates with the fluid flow path 36 and also serves as a fluid flow path. A flange 48 is formed halfway on the outer periphery of the tightening fitting 40, and an O-ring 50 serving as a sealing member is inserted and held on the outer periphery of the tightening fitting 40 by being in contact with the flange 48. ing.

52 is a tapered metal fitting, and the tightening metal fitting 40 is attached at one end.
The other end is formed in a size that can fit into the inner bottom surface of the mounting hole 38, and the midway part is formed into a tapered surface that becomes lower toward the entrance direction of the mounting hole 38. ing.

Reference numeral 54 denotes a chuck fitting, which is slid onto the fastening fitting 40, and has a flange 56 at one end facing the flange 48 of the tightening fitting 40, between which the O-ring 50 is held; The end side is formed into a plurality of elastic tapered pieces 58 along the tapered surface of the tapered metal fitting 52.

Further, the tip of the tapered piece 58 is formed into a locking portion that projects inwardly from the mounting hole 38 .

The pipe joint 32 has a normal pipe joint structure in which a locking pawl 62 and a seal ring 64 are housed in a joint body 60 and a release ring 66, and its function is the same as that of the conventional pipe joint. Therefore, the explanation will be omitted. The pipe joint 32 is
The end of the mating body 60 is fitted into the folded portion 44 of the end of the fastening fitting 40 as shown.

Next, a method for fixing the pipe joint 32 to the mounting hole 38 will be explained.

First, the fluid device mounting fitting 30 is inserted into the mounting hole 38 until the tapered fitting 52 comes into contact with the inner bottom surface of the mounting hole.

Then, simply fit the hexagonal wrench into the hexagonal hole 46 of the tightening fitting 40, rotate the hexagonal wrench about 90 degrees, and tighten.
A fluid device fitting 30 is secured within the mounting hole 38.

That is, when the hex wrench is rotated, the tightening fitting 40 rotates, and since the tapered fitting 52 and the tightening fitting 40 are screwed together, the tightening fitting 40 moves to the left in the figure. Then,
The chuck fitting 54 is connected to the tightening fitting 40 via the O-ring 50.
(flange 48), the tapered piece 58 is regulated by the tapered surface of the tapered metal fitting 52 and pushed outward, and the locking part at the tip is pressed against the inner wall of the mounting hole 38, thereby causing the fluid to flow. The appliance mounting bracket 30 is in the mounting hole 3
It is fixed within 8. That is, the tapered metal fitting 5
2 constitutes a chuck piece diameter expanding means.

At the same time, the O-ring 50 is compressed and deformed between the flanges 48 and 56, and is brought into pressure contact with the inner wall of the mounting hole 38, thereby exerting a sealing effect. In this case, the chuck fitting 52 and the fastening fitting 40 constitute a pressure contact means for the O-ring 50, which is a sealing member.

The pipe joint 32 may be fitted into the folded portion 44 after the fluid device mounting bracket 30 is fixed to the mounting hole 38 as described above, or may be fitted into the fluid device mounting bracket 30 in advance and integrated. A hexagonal wrench may be inserted into the flow path of the pipe joint 32 to fix it in the mounting hole 38 at the fluid device mounting bracket 30 as described above.

The fluid device mounting bracket 30 can be easily removed from the mounting hole 38 by turning a hex wrench in the opposite direction.

FIG. 3 shows another embodiment.

In this embodiment, a tightening fitting 40 and a tapered fitting 52 are used.
Although the tapered metal fitting 52 is moved by reversing the positional relationship between the tapered metal fitting 52 and the tightening metal fitting 40 with a hexagonal wrench, it is clear that the same effect as in the previous embodiment can be achieved.

FIG. 4 shows yet another embodiment.

In the figure, 68 is a tightening metal fitting, and 70 is a chuck fitting that slides thereon. The chuck fitting 70 has a chuck piece 72 provided with slots in the same manner as described above. Tightening fitting 68
As is clear from FIG. 5, the outer peripheral surface of the chuck piece 7 of the chuck fitting 70 is formed into a cam surface by inserting a hexagonal wrench into the hexagonal hole 74 of the fastening fitting 68 and rotating it.
2 can be pushed out against its elasticity (Fig. 6).

74 is a surface cam provided on the end surface of the chuck fitting 70;
Reference numeral 6 denotes a surface cam that is provided on the fastening metal fitting 68 so as to be fitted oppositely to the above-mentioned surface cam 74, and when the fastening metal fitting 68 is rotated,
This is to push the chuck fitting 70 to the upper right in FIG.

Therefore, in this embodiment as well, by rotating the fastening fitting 68, the diameter of the chuck piece 72 of the chuck fitting 70 is expanded, and at the same time, the fluid device mounting fitting 30 itself is fixed within the mounting hole 38. The OIJ song 0 is pressed and deformed, and its peripheral surface is brought into pressure contact with the inner wall of the mounting hole 38, producing a sealing effect.

In this embodiment, the cam provided on the outer circumferential surface of the tightening fitting 68 constitutes the chuck piece diameter expanding means, and the tightening 1.74.76,
The chuck fitting 70 and the tightening fitting 6B constitute means for pressing the O-ring 50, which is a sealing member.

Note that the O-ring may be provided on the chuck fitting 70 and configured to press against the inner wall of the mounting hole 38 by the chuck piece 72 whose diameter is expanded by the chuck piece diameter expanding means.

Further, in each of the above embodiments, a hexagonal wrench is used to rotate the fastening metal fitting, but it may also be rotated using a flathead screwdriver, a Phillips screwdriver, or the like.

In this case, it goes without saying that a fitting portion is provided at the tip of each driver.

(Effects of the Invention) As described above, according to the fluid device mounting bracket according to the present invention,
The fluid instrument can be efficiently fixed in the mounting hole with a single touch and with good sealing performance, and the mounting work can be simplified and quickly achieved.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view showing an example of a fluid device mounting fitting according to the present invention, FIG. 2 is a front view of the fastening fitting, and FIG. 3 is a sectional view showing another embodiment. FIG. 4 is a sectional view showing still another embodiment, and FIGS. 5 and 6 are explanatory diagrams showing the relationship between the fastening fitting and the chuck fitting. FIG. 7 is a sectional view showing a conventional pipe joint. 10... Pipe joint, 12... Channel pipe, 14...
Joint body part, 16... Screw, 18... Locking claw, 20... Channel pipe, 22... Seal ring, 34... Pressure equipment, 36... Fluid channel, 38...
...Mounting hole, 40...Tightening metal fitting, 42...Male thread, 44...Folded part, 46...Hexagonal hole,
48...flange, 50...0 ring,
52... Tapered metal fitting, 54... Chuck metal fitting, 56... Flange, 58... Tapered piece, 60...
...Joint body, 62...Latching claw, 64...Seal ring, 66...Release ring, 68...
・Tightening metal fitting, 70...Chuck metal fitting, 72
...Chuck piece, 74... surface cam.

Claims (1)

[Scope of Claims] 1. In a fluid device mounting bracket for fixing a fluid device such as a pipe joint to a required mounting hole of a pressure device such as a cylinder, a tool such as a hexagonal wrench is fitted in the center, which also serves as a fluid passage. a fastening metal fitting having a recessed hole; a chuck metal fitting having a plurality of elastic chuck pieces fitted around the fastening metal fitting and each having a locking part protruding toward the inner wall of the mounting hole at the tip thereof; A chuck in which the chuck piece of the chuck metal fitting is spread out against its elastic force by rotating the metal fitting about half a turn with a tool such as a hex wrench, and the locking part at the tip of the chuck piece is pressed into contact with the inner wall of the mounting hole. A fluid comprising: a diameter expanding means; a sealing member disposed on the outer periphery of the fastening fitting or the chuck fitting; and a pressure contacting means that presses the sealing member against the inner wall of the mounting hole when the fastening fitting is rotated. Appliance mounting bracket.