JPH083754Y2 - Fastener backup ring - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention uses a fastener to form a groove
The present invention relates to a fastener type backup ring that is coupled inside to prevent a seal member from protruding .

[0002]

2. Description of the Related Art Conventionally, it is one of backup rings.
Cut the part at an acute angle to the side surface and make a recess on one of the cut surfaces.
On the other side, provide a convex portion and engage these concave and convex portions.
Technology to prevent radial displacement of both terminals by
The technique is known from Japanese Utility Model Publication No. 62-30623.
Also, cut a part of the boot and zip it to one side
Male and female on the other side, and multiply these male and female
A technique to combine the cut ends so that they do not separate.
Is based on Japanese Utility Model Application No. 62-113780 microfilm.
It is well known.

However, the conventional backup link described above is used.
When applying a force, make sure that the concave and convex
If not, there is the inconvenience that it cannot be fitted to the outer cylinder,
In addition, the conventional boot does not have a male fastener inside the groove.
There is a problem that can not be crossed with the female.

[0004]

[Problems to be solved by the invention] Is the present invention in this situation?
Is considered, and the fastener is
The male and female can be easily interlocked and the diameter can be regulated before the outer cylinder
It is extremely easy to install by mating with
Providing a backup ring that does not cause failure
I do.

[0005]

Means for Solving the Problems] To solve the above problems
The fastener type backup ring according to the present invention is
Cut the part so that it is inclined to the side,
Form the male of the fastener on one of the cut surfaces and the female on the other,
The above-mentioned backup phosphorus is the beginning of the male and female mating.
The diameter of the plug is larger than the specified size, and the
It adopts a configuration that makes it a fixed size.
At the time of application, for the male and female mating of the fastener
The more connected backup ring, groove wall and seal member
Adopts a structure that is sandwiched between
Is preferred.

[0006]

The function of the Fausner type backup ring according to the present invention is to open the cut portion and fit it into the groove of the insert.
The fastener on one side and the other on the other side.
Hook the female of the fastener with the hook as shown in Figs. 1 and 5.
When backed up, the backup ring is the fastener
It is integrally connected by the male and female engagement of the
It becomes an endless ring of diameter and is fitted tightly into the groove.
It

Then, the fitted backup ring
To one side wall of the groove as shown in FIG.
If a sealing member such as an O-ring is fitted between the side wall and
The backup ring is sandwiched between the O-ring and the groove wall.
Stable by supporting both sides of the insert from any direction
Even when fitted to the outer cylinder, get out of the groove and ride on the O-ring.
Do not lift it or pinch it with the insert and the outer cylinder.
A stable seal such as an O-ring in the position where it is attached
It securely supports the members and completely fulfills the sealing function.
Of.

The backup ring also includes a pair of backup rings when the insert body receives pressure from both sides.
As shown in Fig. 10, attach the plugs to both sides of the groove and
Fit a seal member such as an O-ring in the middle of the backup ring
When worn, the pair of backup rings will both
Stable due to the support on both sides sandwiched between the side wall and the seal member
In this case also , the same function as in the case of the one-sided installation described above is fulfilled.

Furthermore, the backup ring, the male and female of the full <br/> Asuna, the cut surface inclined relative to the side one
Since it is installed on one side and the other side, the male and female fasteners
At the beginning of the mating shown in Figs. 3 and 7,
Is that the diameter of the backup ring is
Easy to fit into the groove because it is increased by the horizontal distance L
And the diameter gradually increased as the crossing progressed.
When the mating is completed, the
The backup ring has a fixed size, so the backup ring should be
The operation of tightly fitting the
It

[0010]

Embodiments of the fastener type backup ring according to the present invention will be described below with reference to the drawings.

FIG. 1 shows a fastener type back door according to the present invention .
Of Ppuringu fastener male, perspective view showing an example of forming the female tenon groove type, Figure 2 is fastest in the high frequency Example
Donor male, perspective view of a prior multiply the female, 3 Same as above
Fasteners of the male in the embodiment, longitudinal side view showing a state where the diameter is increased than the specified dimension of the backup ring at the beginning multiplied with the female, 4 fasteners in the high frequency Example
Of the backup ring when the male and female
Fig. 5 is a vertical sectional side view showing the state where the diameter has reached the specified dimension .
A perspective view showing an embodiment in which a male and a female of a fastener of a fastener type backup ring according to the present invention are formed in an alternating manner ,
FIG. 6 is a perspective view showing the fastener before male and female engagement in the embodiment , and FIG. 7 is the backup ring at the beginning of engagement of the male and female fasteners in the embodiment.
Longitudinal side view showing a state where the diameter is increased from the specified dimension, when 8 is completed by multiplying the fastener in the high frequency Example
In the state that the diameter of the backup ring has become the specified dimension.
FIG. 9 is a vertical side view showing the fastener type bag according to the present invention .
Install a cup ring on one side of the seal member in the groove.
Longitudinal side view showing a wearing state, full 10 according to the present invention
Seal the fastener type backup ring in the groove
It is a vertical section side view showing the state where it was attached to both sides of a member .

1 to 8, reference numeral 1 denotes a backup ring, which is made of a tetrafluoroethylene resin or the like, which is strong against impact, has appropriate hardness, and has a small friction, and a part thereof is a side surface. It is formed into an annular shape that is cut in a slanted shape with respect to the backup ring.
It has a rectangular shape as shown in FIGS. 4, 7, and 8.

1 to 8, reference numerals 2 and 3 denote one and the other of the cut portions of the backup ring 1 described above.
The formed fasteners are shown as a male and a female, and can be easily and accurately formed by a known shearing method, in particular, a method of vibrating a shearing blade. In the embodiment shown in FIGS.
Is a tenon with a circular cross section and female 3 is a groove with a circular cross section.
The tenon male 2 is fitted into the female 3 of the groove to mate them, and in the embodiment shown in FIGS. 5 to 8, the male 2 and the female 3 have stepped notches of the same shape in opposite directions. In the embodiment shown in FIGS. 5 to 8, since the backup ring 1 is formed by engaging the notched male 2 and the female 3 with each other by engaging with each other, the backup ring 1 is not opened. , The step portion of the stepped notch is formed so that the back side is widened.

Moreover, as described above, the male 2 and female 3 of the fastener are acute angles with respect to the side surface of the backup ring 1 (preferably 30 to 45 degrees, but may be less).
Since it is formed on one side and the other side of the cut part that is inclined to
2 and female 3 when mating , as shown in FIG. 3 and FIG.
At the beginning of crossing, the backup ring 1
Since the diameter increases by the horizontal distance L of the inclined cutting part,
Even in the groove of the moving body described below,
Crossing is easy.

However, if the male 2 and the female 3 are deeply engaged with each other, the diameter of the backup ring 1 gradually decreases accordingly , and as shown in FIG. 4 and FIG. When the mating of is completed, the diameter of the backup ring 1 becomes the specified dimension , and the backup ring 1 is joined in the state of being in close contact with the concave groove.
It is integrated into an endless ring.

In FIGS. 9 and 10, reference numeral 5 is an outer cylinder 6.
In the case where the concave portion 7 is formed on the outer periphery thereof and one side of the concave groove 7 is on the pressure side,
As shown in FIG. 9, the backup ring 1 is attached to the non-pressurizing side, and the seal member 8 such as an O-ring is fitted to the pressurizing side,
When the backup ring 1 is sandwiched between the seal member 8 and the side wall of the concave groove 7 to be stabilized by supporting both sides , and both sides of the concave groove 7 are on the pressing side, as shown in FIG. The backup rings 1 and 1 are attached to both sides, and a seal member 8 such as an O-ring is sandwiched between the backup rings 1 and 1, and the two backup rings 1 and 1 are connected to the seal member 8 and the groove 7. It is sandwiched between the side wall and stabilized by supporting both sides, and when the insert body 5 is fitted into the outer cylinder 6, the backup ring 1 is fitted into the outer cylinder 6 without being removed.
Therefore , the seal member 8 is surely supported without protruding.

[0017]

As described above, the fastener type backup ring according to the present invention can be easily installed in the groove of the insertion portion.
It is possible to make sure that it fits perfectly in the groove after mounting.
Since it is integrated and integrated in the state, it is easy to fit the outer cylinder
Is carried out on the seal member.
Stabilize in place with absolutely no baldness and seal members
It provides solid support and achieves complete protection against this overflow.
In addition, this backup ring is
Fitting to an outer cylinder by sandwiching it with a sealing member such as an O-ring
Backup ring is stable by supporting both sides.
Keep the united state when moving in any direction.
Since it is held and fitted into the outer cylinder, in this case also
And the seal member does not run over.
It

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment in which a male and a female of a fastener of a fastener type backup ring according to the present invention are formed in a mortise type.

[Figure 2] of the fastener in the high frequency embodiments the male is a perspective view showing a pre-multiplied with the female.

[FIG. 3] The diameter of the backup ring is larger than the specified dimension at the beginning of the mating of the male and female fasteners in the above embodiment .
It is a vertical side view which shows the increased state .

FIG. 4 is a vertical cross-sectional side view showing a state in which the diameter of the backup ring has become the specified dimension when the male and female fasteners of the embodiment are completed.

FIG. 5 is a fastener type backup ring according to the present invention .
The fastener male is a perspective view showing an example of forming a female Aiketsushiki.

FIG. 6 is a perspective view showing a fastener before male and female engagement with each other in the same embodiment .

FIG. 7: The diameter of the backup ring is larger than the specified dimension at the beginning of the mating of the male and female fasteners in the above embodiment .
It is a vertical side view which shows the increased state .

FIG. 8 is a vertical cross-sectional side view showing a state in which the diameter of the backup ring has become the specified dimension when the male and female fasteners of the embodiment are completed.

FIG. 9 is a fastener type backup ring according to the present invention .
Shows the state where the seal is installed on one side of the seal member in the groove.
It is to longitudinal side view.

FIG. 10 is a fastener type backup phosphorus according to the present invention .
The seal on both sides of the seal in the groove.
It is a vertical side view shown .

[Explanation of symbols]

1 Backup ring 2 Male of fastener 3 Female of fastener 5 Insert 6 Outer tube 7 Recessed groove 8 Sealing member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 64-20539 (JP, U) Shoko 62-30623 (JP, Y2)

Claims (2)

[Scope of utility model registration request] 1. A part of a backup ring is provided on a side surface of the backup ring.
Cut so as to be inclined with respect to one of the inclined cut surfaces
A male fastener and a female female on the other side.
The diameter of the backup ring is regulated at the beginning of
Increases from the fixed size, and becomes the specified size when the mating is completed
A fastener type backup ring characterized by the above structure . 2. The male and female mating of the fastener
The back-up ring that has been connected to the groove wall and the seal member
It is characterized in that it is sandwiched between and stabilized by supporting both sides.
The fastener type backup ring according to claim 1 .