JPH0215540Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a case holding mechanism, and more specifically, in a mechanism in which a case is surrounded and protected by a case guard, such as a filter or a lubricator that constitutes a pneumatic device, the case guard is used to protect the case. The present invention relates to a case holding mechanism configured to be easily and integrally incorporated into a body together with a case.

BACKGROUND ART Conventionally, filters and lubricators that constitute pneumatic equipment have a case built into the body, and a filter element or lubricating oil is housed inside the case. In this case, the case itself is made of a transparent body in order to check the amount of drain and lubricating oil inside the case, but this transparent body is made of, for example, synthetic resin and has a predetermined shape. Therefore, a metal case guard surrounds the case body in order to protect the case without being relatively strong.

Therefore, in such a configuration, cleaning the case,
Alternatively, when maintenance is required such as replacing the case itself, it may be necessary to separate the case and case guard from the body.
However, as mentioned above, the case and case guard are essentially separate components, and therefore, if both are removed when removing the case and case guard from the body, the inside of the case guard may inadvertently be removed. There is an inconvenience that the existing case may fall and be easily damaged due to its brittle material. On the other hand, if you try to remove the case and case guard from the body without confirming that internal pressure still exists within the case, the case or case guard will separate due to extremely large internal pressure, that is, air pressure. Therefore, the risk of damage to workers and peripheral equipment cannot be denied.

The present invention was made to overcome these disadvantages, and the case and case guard are integrated in a part thereof, so that it is easy to incorporate into the body, and handling is further simplified. Furthermore, it is an object of the present invention to provide a case holding mechanism that is constructed so that there is no danger even when the case is inserted or removed.

To achieve the above object, the present invention comprises a body with an inlet port and an outlet port, a transparent or translucent cylindrical case, and a case guard fitted onto the case. a projection extending outward in the axial direction of the case guard; a hole formed in the center end of the case guard; the projection fitting into the hole; The present invention is characterized in that the case and the case guard are integrated with each other through a fixing means such as a member, and the case guard is detachably incorporated into the body.

Next, preferred embodiments of the case holding mechanism according to the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 indicates a filter device constituting a pneumatic equipment, and this filter device 10 basically consists of a body 12 and a case portion 14.
It consists of As can be easily understood from the figure, the body 12 has an inlet port 16 and an outlet port 18, and communication between the inlet port 16 and the outlet port 18 is interrupted by a partition wall 20. There is. Below the body is a wide diameter first
A circumferential groove 22 and a second circumferential groove 24 communicating with the first circumferential groove 22 and having a narrower diameter than the first circumferential groove 22 are defined. This second circumferential groove 24 is connected to the inlet port 16 through a passage 26.
communicate with. A partition wall 2 is provided inside the second circumferential groove 24.
The deflector 28 is fixed using the tip of the 0 and the center of the body 12. The deflector 28 hangs from a horizontal flange 30 and then curves outward to form a raised portion 32. A filter 34 is mounted inside the deflector 28 so as to be directed further downward. The filter 34 has a filter body 36 made of sintered metal powder, and a buttful 38 that is attached to the lower part of the filter body 36 and has a slightly downwardly curved and inclined surface portion.
In this case, the rod 40 is screwed into the holding portion 42 formed bulging inside the body 12, and after the filter main body 36 and the deflector 28 are attached, the buttful 38 is screwed in, and the filter main body 36 and the deflector 28 are mounted. Attach firmly to the body. In addition,
A chamber 44 is defined within the cylindrical filter body 36 and is in communication with the outlet port 18 . A plurality of projecting edges 46 are formed in the lower part of the first circumferential groove 22 and project inward from the body 12 side, and a notch 48 is defined in the center thereof. In this case, reference numeral 47 indicates an arcuate groove defined by mutually adjacent ridges 46 .

Next, the case portion 14 according to the present invention will be explained. As shown in FIGS. 1 to 3, the case portion 14 includes a case 50 made of synthetic resin and a metal case guard 52 surrounding the case 50. As shown in FIGS.
The upper peripheral edge of the case 50 is cut out to form a circumferential groove 54, and a ring 56 made of synthetic resin is attached to the end side of the circumferential groove 54. As can be easily understood from the figure, the ring 56 and the circumferential groove 54 of the case 50
A circumferential recess is defined between the two, and in the present invention, a sealing O-ring 58 is fitted into this recess. Therefore, the sealing O-ring 58 is the same as the ring 56.
It will be easily understood that the sealing O-ring 58 is forcibly fitted into the recess between the end edge of the case 50 and the sealing O-ring 58 bulges further outward in the diametrical direction than the case 50.

By the way, the case 50 is formed so that its diameter is slightly narrowed downward from its upper end.
Therefore, a gap 60 is defined between the case guard 52 and the case guard 52. The case 50 is configured so that its wall thickness gradually increases downward from the portion where the gap 60 is formed and converges at the bottom. Case 5
A circular hole 62 is defined at the bottom of the 0, and further,
A protrusion 64 extending in the axial direction and rotating is formed at the bottom of the central portion of the case 50. In this case, a circumferential groove 65 is formed near the outer circumferential wall of the terminal end of the protrusion 64 to fit a ring to be described later.

As shown in the figure, the case guard 52 is disposed outside the case 50 so as to surround it, and has approximately the same shape as the case 50. However, in this case, in order to visually check the inside of the case 50, a plurality of long grooves 66 are cut out at equal intervals in the case guard 52, and furthermore, a plurality of long grooves 66 are cut out at equal intervals in the upper part, and protrusions projecting outward at predetermined intervals. A rim 68 is formed. The projecting edge 68 is the body 1
mutually adjacent projecting edges 46, 4 formed in 2;
6, and has a shape corresponding to the groove 47 between the grooves 6 and 6;
It has a protrusion 70 directed downward so as to engage with the notch 48 . The lower portion of the case guard 52 is curved and terminates radially centrally, with a central portion defining a hole 72 for receiving the circumferential projection 64. In this case, the protrusion 64 is
2 to integrate the case 50 and the case guard 52, a ring member 73 having a wider diameter than the hole is inserted into the circumferential groove 65 formed on the outer peripheral edge of the protrusion 64.
will fit and fix both.

Next, a drain socket 74 that protrudes outward is attached using the hole 62. The drain pot 74 includes a first cylindrical portion 76 and a drain pot main body 7.
8 and a second cylindrical portion 80 oriented downward from the drain kettle main body 78, the first cylindrical portion 76
A valve body 84 that is pressed downward by a coil spring 82 is housed inside. This valve body 84
A push member 88, which has one end exposed to the outside and an inclined part formed on the other end, is engaged with the inclined tip part 86 of the pusher member 88. A second coil spring 90 is engaged with the other end of the push member 88 and constantly presses the push member 88 outward. In addition,
A joint member 92 is disposed inside the second cylindrical portion 80 .

Next, a locking mechanism 94 is disposed on the case guard 52. This locking mechanism 94 includes a stopper member 96. That is, a part of the case guard 52 is cut out, and the stopper member 96 is engaged with the cutout through the inclined part. This stopper member 96 is constantly pressed upward in the figure by an S-shaped elastic member 98, and the elastic member 98 is elastically bent by the lock button 100. In the figure, reference numeral 102 denotes a tongue piece 104 that slides within the notch of the case guard 52 and presses the stopper member 96 against the body 12.
This is a pin member for displacing the drain socket 74 integrally with the lock button 100, and reference numeral 105 indicates a snap ring for fixing the drain socket 74 to the case 50.

The case holding mechanism according to the present invention is basically constructed as described above, and its operation will be explained next.

First, when attaching the case portion 14 to the body 12, the circumferential protrusion 64 of the case 50 is fitted into the hole 72 of the case guard 52 in advance. Next, a circumferential groove 65 carved in the protrusion 64
The case 50 and the case guard 52 are integrated by fitting the ring member 73 to the case 50 and the case guard 52. Then case 5
0, the drain socket 74 is installed in the hole 62 of the case 50 and fixed with the snap spring 105. Case guard 5 incorporating case 50 in this way
2, first, the ring 56 is introduced into the second circumferential groove 24, and the protrusion 68 is inserted into the groove 47 of the first circumferential groove 22.
Fits inside. In this case, if the case guard 52 is fitted integrally with the case 50 so that the ring 56 faces the upper wall of the second circumferential groove 24, one surface of the stopper member 96 constituting the lock mechanism 94 will be attached to the first circumferential groove. 22 is pressed against the wall portion of the body 12 defining the wall portion 22. Despite the pressure contact, the case guard 52
is made to revolve integrally with the case 50 in the circumferential direction, and then the protrusion 68 is engaged with the protrusion 46.
As a result, the protrusion 70 fits into the notch 48, thereby preventing the body 12 and the case portion 14 from being displaced from each other, and the two become integrated.

In such an assembled configuration, inlet port 16
When air at a predetermined pressure is introduced, the air reaches the first circumferential groove 22 via the passage 26 and the second circumferential groove 24. During this time, the air at the predetermined pressure is transferred to the deflector 2.
8, it wraps around the filter body 36 vigorously under the action of the particularly curved rising portion 32 and penetrates into the interior of the filter body 36 through its entire circumferential wall. In this process, the filter body 36 removes dust and the like contained in the air, and removes it together with excess moisture or oil into the buffer 3.
8 into the inside of the case 50. It goes without saying that the air filtered by the filter body 36 is led out from the chamber 44 through the outlet port 18.

Therefore, the dust accumulated inside the case 50,
Moisture and oil can be easily recognized through the long grooves 66 formed in the case guard 52, and when they reach a predetermined amount,
The push member 88 that constitutes the drain stock 74 is pressed. This push member 88 has an inclined surface 88
a, the tip 86 has this inclined surface 88.
It rises against the elastic force of the coil spring 82 under the pressing action of a, and as a result, moisture etc. inside the case 50 flows from the first cylindrical portion 76 through the second cylindrical portion 80 to the joint member 92. Of course, it is led out from the joint member 92.

Therefore, if the wall of the case 50 becomes dirty with dust or the like, or if the body 1 becomes dirty due to some reason.
Next, a case in which the case portion 14 is removed from the case portion 2 will be described.

First, the lock button 100 is pressed downward. As a result, the stopper member 96 and the first circumferential groove 2
The frictional engagement with the wall portion defining 2 is released. In this state, the case guard 52 is further lifted upward, and as a result, the protrusion 70 is removed from the notch 48. In this case, case guard 52
Needless to say, the case 50, which is integral with the case 50, is also displaced in accordance with the displacement operation thereof. Therefore, the case guard 52 is rotated in the circumferential direction, and the protrusion 68 is positioned so as to correspond to the groove 47. In this state, the case guard 52 is separated from the body 12 together with the case 50 by pulling out the protrusion 68 through the groove 47. That is, the case 50 and the case guard 52 are always handled integrally. Note that in order to separate the case 50 from the case guard 52, the ring member 73 may be removed.

As described above, according to the present invention, for example, the case that constitutes the lubricator and the filter can always be handled integrally with the case guard. Therefore, it is possible to avoid an accident when the case is dropped, without damaging the case, and to further simplify handling. Of course, after cleaning the case, etc., both can be attached to the body at the same time, that is, with one touch, making maintenance management easier. Furthermore, since the structure for attaching the case to the case guard is extremely simple, the case and the case guard can be manufactured at low cost, and the overall economic efficiency is further improved.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to these embodiments, and various improvements and changes in design are possible without departing from the gist of the present invention. Of course.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway exploded perspective view of the case holding mechanism according to the present invention, Fig. 2 is a longitudinal cross-sectional view of main parts showing the coupling relationship between the case and case guard, and Fig. 3 is an exploded perspective view of the case and case guard. It is. 10...filter, 12...body, 14...
Case portion, 16... Inlet port, 18... Outlet port, 20... Partition wall, 22, 24... Circumferential groove, 28
...Deflector, 34...Filter, 40...
Rod, 50... Case, 52... Case guard, 56... Ring, 58... Seal O-ring, 64... Projection, 66... Long groove, 68... Projection, 70... Projection, 73 ...Ring, 74...Drain cock, 94...Lock mechanism.

Claims (1)

[Scope of utility model registration request] It consists of a body having an inlet port and an outlet port, a transparent or translucent cylindrical case, and a case guard that fits over the case and extends outward in the axial direction at a central end of the case. A hole is formed at the central end of the case guard, and the projection is fitted into the hole and the case and the case guard are connected to each other through a fixing means such as a ring member. A case holding mechanism characterized in that the case guard is configured to be integrated with the body and detachably incorporated into the body.