JPH0446112Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a structure technology for attaching a gasket to a pneumatic equipment.

[Background technology]

Generally, a gasket (or packing) used for sealing a joint between a pneumatic device such as a valve or a manifold and other devices is made of a thin plate structure of a sealing material such as rubber.

By the way, when installing a conventional gasket, the gasket is placed on the required installation part of one of the devices to be installed, and then the other device is placed on top of the gasket and bolts, screws, etc. Both devices are connected in a hermetically sealed manner.

However, with conventional gaskets, a thin plate with the required communication holes is simply placed on the installation part, so alignment may become inaccurate due to misalignment of the gasket during or after installation. Therefore, there are problems such as the sealing performance, which is the original function of the gasket, is impaired.

Therefore, in order to solve this problem, a single ring-shaped pawl is formed on one side of the sheet-like body, and this pawl is used to attach a specified device to There is a gasket having a structure in which the mounting position is adjusted by being inserted into a flow hole.

Incidentally, a hole in a pneumatic device or the like that is sealed by a gasket usually has a perfect circular cross section in the radial direction.

For this reason, when the ring-shaped claw of the gasket with the above structure is fitted into a hole with a perfect circular cross section in a pneumatic device, etc., and alignment is performed, the gasket cannot be reliably aligned with the hole. You can, but
On the other hand, the positioning of the main body with respect to the mounted portion of the fluid pressure device cannot be performed using the claws, and misalignment occurs.

In other words, when the gasket is installed or after installation, the main body shifts in the direction of rotation around the claw, and as a result, if the main body is not perfectly circular, the sealing performance of the main body may not be fully demonstrated. occurs.

[Purpose of invention]

An object of the present invention is to provide a structure for attaching a gasket to a pneumatic equipment, which allows easy and reliable positioning of the gasket to the object to be attached, and which can effectively exhibit sealing performance.

[Structure of the idea]

The structure for attaching the gasket to pneumatic equipment of the present invention includes a plurality of positioning protrusions protruding from one side of a plate-like main body for use in positioning the gasket, sealing the gasket, and preventing it from falling off. , a stepped portion is provided on the outer peripheral surface of each of the alignment protrusions, and the outer diameter of the tip side of the alignment protrusion is smaller than the outer diameter of the main body side; A communication hole for air pressure distribution is penetrated in the direction of the main body to form a substantially cylindrical shape, and a sealing protuberance is integrally formed in an annular shape at the open end of the communication hole on the other side of the main body. The gasket and each positioning protrusion of this gasket are inserted and fitted, respectively.
a pneumatic device having a plurality of air circulation holes each having a stepped portion around its inner peripheral surface; each positioning protrusion of the gasket is inserted and fitted into the plurality of air circulation holes of the pneumatic device; The step portion is engaged with the step portion of the air circulation hole of the pneumatic device, and the gasket is attached to the pneumatic device.

[Embodiment 1] Fig. 1 is a plan view showing a structure for attaching a gasket to pneumatic equipment according to an embodiment of the present invention, Fig. 2 is a cross-sectional view taken along the - line, and Fig. 3 is a partial cross-sectional view thereof. be.

In the gasket in this first embodiment, each part is integrally formed of a sealing material such as rubber or plastic.

A plurality of alignment protrusions 4 for mounting position alignment are protruded and arranged in parallel on the lower surface side of the thin plate-like main body 1, and a stepped portion 4A is formed in an annular manner on the outer peripheral surface of each alignment protrusion 4. It is set up.

As shown in FIG. 3, the positioning protrusion 4 is inserted directly into an air circulation hole 6 provided in the object 5 when the gasket is attached to the object 5, such as a valve or a manifold. , alignment with respect to the object 5 can be easily ensured.

Therefore, in the first embodiment, the positioning protrusion 4 is fitted into the hole 6, and the main body 1 is attached to the object 5.
After mounting on the gasket, as shown by the two-dot chain line in FIG. 3, other equipment 7 is mounted on the gasket and fixed with fixing means such as bolts or screws (not shown), thereby preventing the gasket from shifting relative to the mounted object 5. It is possible to easily and reliably obtain accurate positioning, mounting, and prevention of falling off without causing any damage, and it is possible to always perform reliable sealing.

Furthermore, since the alignment protrusion 4 in this embodiment 1 has an annular step 4A on its outer periphery, when inserted into the hole 6 of the object 5, the step 4A becomes the step of the hole 6. By engaging with the fitting, it is possible to more easily and reliably ensure alignment with respect to the object to be mounted 5, and also to exhibit a function of preventing fluid leakage, thereby ensuring better sealing performance.

Furthermore, in the first embodiment, since a plurality of positioning protrusions 4 are integrally formed in the main body 1, even when the holes 6 are formed with a perfect circular cross section in the radial direction, the holes 6 The main body 1
It is possible to reliably align the mounting position of the device itself.

Therefore, the sealing function of the main body 1 itself can be fully exhibited.

Further, the alignment protrusion 4 is formed into a substantially cylindrical shape with communication holes 2 for air circulation passing through it in its axial direction, and each of the substantially cylindrical alignment protrusions 4 is connected to a plurality of holes 6, respectively. By being inserted and fitted, the main body 1 is reliably attached to the object 5, and the gasket is prevented from falling off.

Further, around each communication hole 2 on the upper surface side of the main body 1, a sealing protuberance 3 having a substantially semi-cylindrical cross section is integrally formed in an annular shape to ensure sealing performance.

Note that the object to be mounted 5 in the first embodiment is a pneumatic device.

[Embodiment 2] FIG. 4 is a sectional view showing a structure for attaching a gasket to a pneumatic equipment according to another embodiment of the present invention.

This second embodiment is similar to the previous embodiment except that the sealing protrusion 3A on the upper surface side of the main body 1 has a rectangular cross-sectional shape.

It should be noted that the present invention is not limited to the above embodiments, and various other modifications are possible.

〔effect〕

According to the present invention, the following effects can be obtained.

(1) By inserting and fitting the plurality of positioning protrusions into the plurality of air circulation holes of the pneumatic equipment and installing the main body to the pneumatic equipment, the main body itself will not shift when or after the gasket is installed. Since this is prevented, it is possible to easily and reliably align and attach the pneumatic equipment to the air circulation hole.

In addition, since the main body itself is prevented from shifting in this way, when temporarily fixing the gasket to the air circulation hole when installing the gasket, for example, when temporarily fixing the gasket with both sides of the gasket main body in a vertical position, etc. Also, it is possible to easily and reliably prevent the gasket from falling off from the pneumatic equipment.

(2) The effect of (1) above is that when the positioning protrusions are inserted and fitted into the air circulation holes of the pneumatic equipment, the stepped portions of the positioning protrusions will fit into the air circulation holes of the pneumatic equipment. This can be achieved even more reliably by attaching the main body to the pneumatic equipment by being engaged with the stepped portion provided around the inner circumferential surface of the main body.

(3) By increasing the contact area at the engagement portion of the stepped portion between the gasket and the pneumatic device, it is possible to easily and reliably prevent the gasket from falling off from the pneumatic device.

(4) The effects of (1), (2), and (3) described above make it possible to improve the sealing performance of this type of gasket.

(5) The main body is attached to the pneumatic device by the stepped portion of the positioning protrusion being engaged with the stepped portion provided around the inner peripheral surface of the air circulation hole of the pneumatic device, and the main body has a sealing protuberance. By doing so, the sealing performance of the gasket can be further improved.

(6) A stepped portion is provided on the outer circumferential surface of each positioning projection, and the outer diameter of the tip side of the positioning projection is smaller than the outer diameter of the main body side, thereby facilitating positioning when the gasket is attached. The protrusion can be easily inserted into the air circulation hole, and from this point of view as well, the pneumatic equipment can be easily and reliably aligned and attached to the air circulation hole.

In particular, when the positioning protrusions are formed in a complicated manner, it is difficult to insert each positioning protrusion into each air circulation hole of the pneumatic equipment.
The above-mentioned effect of being able to solve such problems is extremely significant.

Furthermore, the ease of insertion described above makes it possible to increase the diameter of the large diameter portion on the proximal end of the alignment protrusion, and as a result, it is possible to easily and reliably prevent the gasket from falling off from the pneumatic equipment. can.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing a structure for attaching a gasket to pneumatic equipment, which is an embodiment of the present invention, Fig. 2 is a sectional view taken along the - line, Fig. 3 is a partial sectional view thereof, and Fig. 4 is a main part of the gasket. FIG. 7 is a sectional view showing a structure for attaching a gasket to a pneumatic equipment according to another embodiment of the invention. 1... Main body of gasket, 2... Communication hole, 3,
3A... Protrusion for sealing, 4... Positioning protrusion, 4A... Step, 5... Mounted object, 6... Hole,
7...Equipment.

Claims (1)

[Scope of utility model registration request] A plurality of positioning protrusions for mounting position alignment, sealing, and prevention of falling off protrude from one side of the plate-like body and are integrally formed on the main body, and each of the positioning protrusions has a stepped portion on its outer peripheral surface. The outer diameter of the distal end side of the positioning protrusion is smaller than the outer diameter of the main body side thereof, and each of the positioning protrusions is provided with a communication hole for air pressure circulation through each of the positioning protrusions in the axial direction thereof. A gasket is formed into a substantially cylindrical shape and has a sealing protuberance integrally formed in an annular shape at the open end of the communication hole on the other side of the main body, and each positioning protrusion of the gasket is provided with a gasket. inserted and mated,
a pneumatic device having a plurality of air circulation holes each having a stepped portion around its inner peripheral surface; each positioning protrusion of the gasket is inserted and fitted into the plurality of air circulation holes of the pneumatic device; A structure for attaching a gasket to a pneumatic device, wherein the gasket is attached to the pneumatic device by engaging a step portion of the air circulation hole of the pneumatic device.