JPS63174381A - X-ring - Google Patents

Abstract

PURPOSE:To perform an adjustment of the angle of a blocking member by a low-load external force by a method wherein lip parts are formed on the sides of the outer and inner diameters of an X-ring in such a way that the configuration of the section of the X-ring is formed into an X shape and acute abutting faces are respectively formed on each lip part. CONSTITUTION:An X-ring 11 is installed in a packing groove 10 formed horizontally on the side surface of a blocking member 2. Acute working faces P1 and P2 are respectively formed on inner diameter side lip parts 12a and 12b of the ring 11 and are molded in parallel to the axial direction of the ring 11 in such a way as to adhere to the bottom part of the packing groove 10 provided on the member 2. Acute abutting faces Q1 and Q2 are respectively formed on outer diameter side lip parts 13a and 13b and are molded in such a way as to bond to a container's opening part 1 having a curvature (r). Whereupon, ones to bond to the container's opening part 1 in the ring 11 are the abutting faces Q1 and Q2 only and the distribution of the surface pressures of the bonding parts concentrates on the abutting face Q2. As a result, an adjustment of the angle of the member 2 can be performed by a low-load external force.

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention (Industrial Application Field) The present invention relates to an X-ring used as a closing member attached to the opening of a container of a carbon dioxide laser application device or the like.

(Prior Art) Conventionally, a closing member attached to the opening of a container whose interior is under negative pressure, such as a carbon dioxide laser oscillator, is constructed as shown in FIG.

That is, as shown in FIG. 5, the opening 1 of the container and the closing member 2 are joined by a spherical surface machined with a predetermined radius of curvature. Further, in the spherical joint, a packing groove 3 is usually formed on the closing member 2 side, and an O-ring 4 is attached to the container in order to maintain a negative pressure state inside the container. This packing groove 3
is formed horizontally on the side surface of the closing member 2. Roughly speaking, a mirror or the like that reflects laser beams or the like is fixed to the closing member 2 at a predetermined angle.

In order to position the reflected light, the reflection mirror is positioned at an appropriate angle by adjusting the plurality of adjustment bolts 5 that fix the closing member 2 equipped with the reflection mirror to the opening 1 of the container. Adjustments are being made so that

By the way, when the O-ring 4 is attached to the packing groove 3 as described above and the inside of the container is kept in a reduced pressure state, the surface pressure of the joint surface of the O-ring 4 is as shown in FIG. The frictional resistance at the sealing portion of the closing member 2 becomes extremely large. Therefore, a large force was required to adjust the angle of the closing member 2.

However, since the angle adjustment of the reflective mirror etc. attached to the closing member 2 requires an accuracy of several tens of microradians, when trying to adjust the spherical joint with this accuracy, the II Low resistance has the disadvantage that minute angle adjustments cannot be made.

(Problems to be Solved by the Invention) As mentioned above, in conventional sealing members such as O-rings used in equipment that applies carbon dioxide lasers, the frictional resistance generated between them and the opening of the container is extremely large. Therefore, the accuracy of the angle adjustment of the closing member for finely adjusting the angle of reflected light such as a laser beam was extremely low.

Therefore, the present invention aims to eliminate the above-mentioned drawbacks, and its purpose is to provide a high-precision X-ring that can adjust the angle of a closing member with a low external force for finely adjusting the angle of reflected light such as a laser beam. Our goal is to provide the following.

[Structure of the Invention and Means for Solving the Problems] The X-ring of the present invention has lip portions formed on the outer diameter side and the inner diameter side so that the cross-sectional shape is X-shaped, and a lip portion is formed on each lip portion, respectively. It has an acute-angled contact surface. In addition, a plurality of notches are formed in at least the outer diameter side lip part disposed on the atmosphere side among the outer diameter side lip parts at the part that joins with the side surface of the packing groove provided in the closing member. Melt.

(Function) The X-ring of the present invention connects the acute-angled contact surface formed on the outer diameter side lip to the container opening, thereby concentrating the surface pressure of the joint at one point and reducing the frictional resistance between the two. This allows the angle of the closing member to be adjusted with a low external force.

In addition, by forming a plurality of notches in the outer diameter side lip part disposed at least on the atmosphere side among the outer diameter side lip parts at the part that joins with the side surface of the packing groove, the inside of the container is depressurized. When the condition is set, air from the atmosphere side is introduced into the cavity formed between the outer lip and the inner lip arranged on the atmosphere side, and the outer lip is placed on the container opening side. By applying pressure to the surface, sealing performance can be significantly improved.

(Example) Hereinafter, an example of the present invention will be specifically described based on FIGS. 1 to 4. Note that the same members as those of the conventional type shown in FIGS. 5 and 6 are designated by the same reference numerals, and explanations thereof will be omitted.

■First Embodiment Configuration of this Embodiment* In this embodiment, as shown in FIG. 1(A), an X
A ring 11 is attached. Also, this X ring 11
is constructed as shown in FIG. 1(B). That is,
Acute angle abutment surfaces P'+ and P2 are formed on the inner diameter side lip parts '12a and 12b of the X-ring 11, respectively, and the X-ring 11 is made to tightly contact the bottom of the packing groove 10 provided in the closing member 2. Molded parallel to the axial direction.

On the other hand, the outer diameter side lip portions 13a and 13b each have an acute angle contact surface Q1. Q2 is formed and shaped to join the opening 1 of the container having a radius of curvature r.

Further, an inter-lip cavity 14 is formed between the outer lip portion 13b and the inner lip portion 12b, which are disposed on the atmosphere side.

Note that the acute angle contact surface P1. In forming P2, Qt, and Q2, they are configured to contact each other at the same angle of θ so that the conditions of each bonding surface are the same.

Effect of this embodiment* In the X-ring of this embodiment having such a configuration,
The outer lip portion 13a is connected to the opening 1 of the container.
, 13b are the only acute contact surfaces Qt, Q2, and the surface pressure distribution of the contact surfaces is as shown in Fig. 2.
It concentrates on the acute-angled contact surface Q2 formed on the outer diameter side lip portion 13b disposed on the atmosphere side. As a result, the frictional resistance of the joint surfaces, which has been a problem in the past, becomes extremely small, and minute angle adjustments of the closing member 2 become easier.

In this way, the packing groove and the X-ring are machined with highly accurate dimensional tolerances, and the X-ring and the opening of the container are joined at the acute-angled contact surface Q2 formed on the outer lip. Therefore, the surface pressure is concentrated on one point, the frictional resistance between the two can be reduced, the angle of the closing member can be easily adjusted, and the accuracy can be greatly improved.

■Second Embodiment Configuration of this Embodiment* In this embodiment, as shown in FIG. A packing groove 20 is horizontally formed in the closing member 2, and an X-ring 21 is mounted within the packing groove 20. This X-ring 21 is constructed in the same manner as in the first embodiment.

That is, the inner lip portion 22a of the X-ring 21.

22b each have an acute angle contact surface P1. P2 is formed parallel to the axial direction of the X-ring 21 so as to closely contact the bottom of the packing groove 20 provided in the closing member 2.

On the other hand, the outer diameter side lip portions 23a and 23b each have an acute-angled contact surface Q1. Q2 is formed and shaped to join the opening 1 of the container having a radius of curvature r.

Further, an inter-lip cavity 24 is formed between the outer lip portion 23b and the inner lip portion 22b, which are disposed on the atmosphere side.

Roughly speaking, a notch 25 is formed in the outer lip portion 23b of the X-ring 21, which is disposed on the atmosphere side, at a portion that joins with the outer surface of the packing groove 20. This notch 25
As shown in FIG. 3(B), the outer diameter side lip portion 23.
A plurality of them are formed at appropriate locations on the circumference of b.

Effect of this embodiment* In the X-ring of this embodiment having such a configuration,
The outer lip portion 23a is connected to the opening 1 of the container.
, 23b, and it is possible to concentrate the contact pressure in the same way as in the first embodiment, so the frictional resistance of the contact surfaces becomes extremely small, and the closing member 2
This makes minute angle adjustments very easy.

In addition, by forming a plurality of notches 25 in the portion of the outer diameter side lip portion 23b of the X-ring 21 that joins with the outer surface of the packing groove O, when the inside of the container is depressurized, As shown in >, the air on the atmospheric side flows into the inter-lip cavity 2.
4 and is disposed on the atmosphere side.
b and the inner diameter side lip portion 22b are each pressed outward. As a result, the outer diameter side lip portion 23b is located at the opening 1 of the container.
The sealing performance improves significantly as the pressure inside the container progresses.

In this way, the packing groove and the X-ring are machined with highly accurate dimensional tolerances, and the X-ring and the opening of the container are joined at the acute-angled contact surface Q2 formed on the outer lip. Therefore, the surface pressure is concentrated on one point, the frictional resistance between the two can be reduced, the angle of the closing member can be easily adjusted, and the accuracy can be greatly improved.

Furthermore, when the pressure inside the container is reduced, the sealing performance can be significantly improved due to the expansion effect of the lip portion of the X-ring.

■Third Embodiment Configuration of this embodiment* In this embodiment, as shown in FIG. A packing groove 30 is horizontally formed in the packing groove 30, and an X-ring 31 is installed in the packing groove 30.

This X-ring 31 is constructed similarly to the first embodiment.

That is, the inner lip portion 32a of the X-ring 31.

32b each have an acute angle contact surface P1. P2 is formed parallel to the axial direction of the X-ring 31 so as to closely contact the bottom of the packing groove 30 provided in the closing member 2.

On the other hand, the outer lip portions 33a and 33b are formed with acute contact surfaces Ql and Q2, respectively, and are shaped to join to the opening 1 of the container having a radius of curvature r.

Further, an inter-lip cavity 34b is formed between the outer lip portion 33b disposed on the atmosphere side and the inner lip portion 32b, and the outer lip portion 33a disposed on the container side An inter-lip cavity 34a is formed between the lip portion 32a and the lip portion 32a.

Roughly speaking, a notch 35a is formed in the outer lip portion 33a of the X-ring 31, which is disposed on the container side, at a portion that joins with the inner surface of the packing groove 30. A notch 35b is formed in the outer diameter side lip portion 33b at a portion that joins with the outer surface of the packing groove 30. These notches 35a and 35b are formed on the outer diameter side lip portion 3.
A plurality of them are formed at appropriate locations on the circumferences of 3a and 33b.

Effect of this embodiment* In the X-ring of this embodiment having such a configuration,
The outer lip portion 33a is connected to the opening 1 of the container.
, 33b formed at the acute angle contact surface Q1. Since only Q2 makes it possible to concentrate the surface pressure as in the first embodiment, the frictional resistance of the joint surfaces becomes extremely small, and minute angle adjustments of the closing member 2 are made very easy. Become.

Further, the outer diameter side lip portion 33a of the X ring 31.

By forming a plurality of notches 35a and 35b in 33b, when the inside of the container is depressurized, air from the atmospheric side is introduced into the inter-lip cavity 34b, similar to the second embodiment.
The outer lip portion 33b and the inner lip portion 32b, which are disposed on the atmosphere side, are each pressed outward. the result,
The outer diameter side lip portion 33b is pressed toward the opening 1 side of the container,
As the pressure inside the container progresses, the sealing performance improves significantly.

On the other hand, when the inside of the container is pressurized, the air inside the container is introduced into the inter-lip cavity 34a, and the outer lip 33a and the inner lip 32a, which are disposed on the atmosphere side, are pushed outward. be done. As a result, the outer lip portion 33a is pressed toward the opening 1 of the container, and as the inside of the container is pressurized, the sealing performance is significantly improved.

■Other Examples It should be noted that the present invention is not limited to the above-mentioned embodiments, and the shape of the packing groove formed in the closing member is perpendicular to the joint surface between the opening of the container and the closing member. It may also be a formed one. In that case, the X-ring installed in the packing groove is also formed to be inclined to match the shape of the packing groove.

[Effects of the Invention] As described above, according to the present invention, the sealing member installed in the sealing groove formed in the closing member disposed at the opening of the container of the carbon dioxide laser applied equipment, etc. By a simple method of forming a ring, forming lips on the outer diameter side and inner diameter side so that the cross-sectional shape is X-shaped, and forming an acute contact surface on each of the lips, reflected light such as laser beams etc. It is possible to provide a highly accurate X-ring that can perform angle adjustment of a closing member for fine angle adjustment with a low external force.

[Brief explanation of the drawing]

FIG. 1 shows the first embodiment of the X-ring of the present invention (
A> is a sectional view showing the installed state, (B) is an enlarged sectional view of the main part of the X-ring, FIG. 2 is a diagram showing the surface pressure distribution of the X-ring shown in FIG. 1, and FIG. This shows the second embodiment of the X-ring (A> is a sectional view showing the installed state, (B) is the X-ring
FIG. 4 is a plan view of the ring viewed from the axial direction, and is a sectional view showing the third embodiment of the X-ring of the present invention, and FIG. 5 is a cross-sectional view showing the state in which the conventional O-ring is mounted. The cross-sectional view, FIG. 6, is a diagram showing the blood pressure distribution of a conventional O-ring. DESCRIPTION OF SYMBOLS 1... Container opening, 2... Closing member, 3... Packing groove, 4... O-ring, 5... Adjustment bolt, 1
0...Packing groove, 11...X ring, 12a, 1
2b...Inner diameter side lip portion, 13a, 13b...Outer diameter side lip portion, 14...Lip cavity, 20...Packing groove, 21...X ring, 22a, 22b...
Inner diameter side lip portion, 23a, 23b... Outer diameter side lip portion, 24... Cavity between lips, 25... Notch, 30
...Packing groove, 31...X ring, 32a, 32
b... Inner diameter side lip part, 33a, 33b... Outer diameter side lip part, 34a, 34b... Inter-lip cavity part, 35
a, 35b...notch.

Claims (3)

[Claims] (1) In a sealing device in which an opening of a container and a closing member that closes the opening are spherically joined, a packing groove is formed in the closing member in order to maintain the inside of the container in a reduced pressure state, and the packing groove is formed in the closing member. The sealing material installed inside is an X-ring, with lips formed on the outer diameter side and inner diameter side so that the cross-sectional shape is X-shaped, and acute-angled contact surfaces are formed on each of the lip parts. Features an X-ring. (2) A patent claim in which the outer lip portion of the outer lip portion disposed on the atmosphere side has a plurality of notches formed in a portion that joins with the outer surface of the packing groove. The X-ring described in the range 1 above. (3) A patent in which both lip portions disposed on the atmosphere side and the container side of the outer diameter side lip portion have a plurality of notches formed in the portions where they join with both side surfaces of the packing groove. An X-ring according to claim 1.