JPH0414709Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an attachment/detachment device for removably attaching a cup-shaped bowl to a body having air circulation of a pneumatic device such as a filter or a lubricator.

Problems to be Solved by Conventional Technologies and Ideas For example, a lubricator has a cup-shaped bowl for storing oil on the lower surface of a body in which an air flow passage having an orifice is transparent in a substantially horizontal direction, and a cup-shaped bowl for storing oil. A bowl guard is installed to prevent the oil from scattering in the event that the bowl ruptures due to high pressure being applied inside the bowl.The oil in the bowl is sucked up by the pressure difference between the bowl and the orifice, and is supplied to the orifice. Conventionally, the bowl attaching/detaching device for such a lubricator is
A plurality of hooks are protruded at regular intervals in the circumferential direction on the rim side of the inner peripheral surface of a circular mounting tube formed on the body, and a plurality of flanges are formed on the outer periphery of the rim of the bowl and bowl guard. The bowl and bowl guard are formed with unevenness that protrudes at regular intervals and positions the bowl and bowl guard at an angle where the respective flanges align with each other. By fitting the bowl and bowl guard into the mounting tube from between the holes and rotating the bowl and bowl guard at a certain angle, the collar is hooked to the hook and attached to the body. A device is employed in which a piece is engaged with an engaging portion provided on the body to prevent rotation of the bowl and bowl guard.

As a mechanism for preventing the rotation of this bowl and bowl guard, for example,
Publication No. 81850 discloses that a notch window is formed on the mouth edge of the bowl guard, and a tongue is provided in the notch window, the tip of which can be pressed toward the center of the bowl guard against elasticity using the back end side of the notch window as a fulcrum. At the same time as attaching the piece, form an engagement groove on the rim of the inner peripheral surface of the mounting tube of the body,
Insert the bowl and bowl guard into the mounting tube while letting the tip of the tongue slip into the inner periphery of the mounting tube, rotate the bowl and bowl guard by a certain angle, and fit the tongue into the engagement groove with its restoring elasticity. prevents rotation by
When removing the bowl, it is known to rotate the bowl and bowl guard while pressing the tongue piece to remove them from the engagement groove, but in such a mechanism, the tongue piece formed separately is Because it is attached to the bowl guard, the structure is not only complicated, but also because the tongue piece slips into the inner circumference of the mounting tube, and when the tongue piece is released from the engagement groove, the tip part Since the structure is such that the bowl guard is tilted toward the center of the bowl guard, it is necessary to provide a large gap between the inner periphery of the mounting tube and the outer periphery of the bowl guard, which increases the diameter of the mounting tube, and furthermore, Since it is structured to be pushed in using the back end of the notch groove as a fulcrum, there was a problem that it was difficult to operate.

Means for Solving the Problems As a means for solving the above problems, the bowl attaching/detaching device for pneumatic equipment of the present invention has a filter,
In an attachment/detachment device for removably attaching a cup-shaped bowl to a body having an air flow passage of a pneumatic device such as a lubricator, a plurality of hooks are provided on the edge side of the inner peripheral surface of a circular attachment cylinder formed in the body. are formed at regular intervals in the circumferential direction, and a plurality of flanges are formed at regular intervals on the outer periphery of the mouth edge of the bowl and the bowl guard that fits over the bowl, and
An unevenness is formed on the bowl and the bowl guard to position the bowl and the bowl guard at an angle where the flanges align with each other, and the flanges of the bowl and the bowl guard are inserted between the hooking portions of the body. By fitting into the mounting cylinder and rotating the bowl and the bowl guard by a certain angle, the collar is hooked to the hooking portion and attached to the body, and on the outer peripheral surface of the bowl guard, By pressing the rear end toward the center of the bowl guard, a tongue piece whose tip end is inclined in a direction away from the outer circumferential surface of the bowl guard is integrally formed via an elastic bending piece. A circumferential engaging portion is formed on the outer circumferential surface of the body so that the tip of the tongue piece engages with the bowl guard at a position where the bowl guard is attached to the body to prevent rotation of the bowl and the bowl guard. It is something.

Functions and Effects The present invention has the above-mentioned configuration, and the bowl and bowl guard are aligned with the unevenness formed respectively, and fitted together with their respective flanges aligned, and the flanges of the bowl and bowl guard are fitted to the body. When inserted into the mounting cylinder between the latches, the tip of the tongue piece rides on the outer circumferential surface of the body against the elasticity of the elastic bending piece, and then when the bowl and bowl guard are rotated by a certain angle, the flange is released. The bowl and bowl guard are attached to the body by being hooked to the latch portion, and at the same time, the tip of the tongue piece engages with the engagement portion on the outer circumferential surface of the body due to its restoring elasticity, preventing rotation and returning to the installed state. On the other hand, when removing the bowl, press the rear end of the tongue and tilt the tip in a direction away from the outer peripheral surface of the bowl guard, so that the tongue can be removed from the engaging portion. The bowl and bowl guard are removed by rotating the bowl and bowl guard in this state and pulling out the collar from between the hooks.

In this way, in the present invention, since the locking tongue piece is formed integrally with the bowl guard, the structure is simple, and the tongue piece can be engaged with the engaging part formed on the outer peripheral surface of the body. Therefore, there is no need to provide a gap between the inner periphery of the mounting tube and the outer periphery of the bowl guard, and the diameter of the mounting tube can be kept small. Since the tip is lifted by pressing, it can be operated like a lever, making it easier to operate.

Embodiment Hereinafter, an embodiment in which the present invention is applied to a lubricator A will be described based on FIGS. 1 to 3.

The lubricator A of this embodiment has a transparent cup-diameter bowl 3 made of polycarbonate for storing oil on the lower surface of a body 1 in which an air flow passage 2 is horizontally transparent, and a transparent cup-diameter bowl 3 that is fitted onto the bowl 3. A bowl guard 4 made of synthetic resin such as nylon is attached to protect the bowl 3.
Due to the pressure difference between the bowl 3 and the orifice 5 in the air flow passage 2, the oil in the bowl 3 is sucked up above the dripping surface 6 and drips into the dripping tube 6 from the dripping hole 7 on the top surface of the dripping tube 6. , is supplied from the supply hole 8 to the orifice 5 and mixed into the air.

Next, a mechanism for attaching and detaching the body 1, the bowl 3, and the bowl guard 4 will be explained.

The lower end of the body 1 has a circular inner peripheral surface,
A mounting cylinder 11 whose outer circumferential surface is a regular octagon and whose lower end is shaved to form a circular shape is formed, and four hooking parts 12 are arranged at angular intervals of 90 degrees on the edge side of the inner circumferential surface of this mounting cylinder 11. Four flanges 15 are protruded at 90 degree intervals on the outer periphery of a protrusion 14 provided slightly below the mouth edge of the bowl 3. Four flanges 16 are also formed on the outer periphery of the mouth rim at 90 degree intervals, and two protrusions 17 for positioning are provided on the lower surface of the protrusion 14 of the bowl 3. Two recesses 18 are formed on the rim of the bowl guard 4 with an interval of 180 degrees between them, and the two recesses 18 fit into the protrusions 17, which are also located between the flanges 16, 16. They are formed with 180 degrees of spacing.

A rectangular through hole 20 is provided at a position slightly below one of the recesses 18 on the outer peripheral surface of the bowl guard 4 described above, and a rectangular through hole 20 extends from the mouth side of the bowl guard 4 toward the bottom side. Elastic bending piece 21
is formed continuously and integrally with the side of the opening edge side of the bowl guard 4 of the through hole 20, and the protruding end of this elastic bending piece 21 is bent diagonally outward, and the upper surface of this elastic bending piece 21 has a A tongue piece 22 whose tip extends toward the mouth edge of the bowl guard 4 is integrally formed with its rear end continuous with the bent protruding end of the elastic bending piece 21, and a tongue piece 22 is formed integrally with the rear end of the tongue piece 22 extending toward the mouth edge side of the bowl guard 4. A bent pressing portion 23 is formed, and the above-mentioned tongue piece 22 is formed on the mouth edge of the mounting tube 11 of the body 1.
Two engaging grooves 25, 25, into which the tips of the two engaging grooves 25 are fitted, are formed with an interval of 180 degrees between the hooking parts 12, 12.

Note that the bowl 3 is attached to the outer peripheral surface of the bowl guard 4.
Multiple viewing windows 27 to see the amount of oil inside
is formed, and a slot 28 along the length is inserted into the mouth rim, so that when the bowl guard 4 contains moisture and expands, the diameter of the mouth rim is reduced and the body 1 is attached. It is designed to be easily inserted into the tube 11.

Next, the procedure for attaching the bowl 3 will be explained.
When the bowl guard 4 is fitted to the outside of the ball 3 with the convex portion 17 and the concave portion 18 aligned, the flange 15 of the bowl 3 and the flange 16 of the bowl guard 4 are fitted together in an aligned state, and the fitted bowl 3
When the collars 15 and 16 of the bowl guard 4 are inserted into the mounting tube 11 from between the hooking portions 12 of the body 1,
When the tip of the tongue piece 22 bends the elastic bending piece 21 against the elasticity and rides on the lip of the circular part on the outer peripheral surface of the mounting tube 11, and then rotates the bowl 3 and the bowl guard 4 by a certain angle. , the collar 16 of the bowl guard 4 is hooked to the hook 12, and the bowl 3 and the bowl guard 4 are attached to the body 1, and as shown in FIG. 3a, the tip of the tongue piece 22 is The engagement groove 25 of the body 1 due to the restoring elasticity of the elastic bending piece 21
The rotation of the bowl 3 and the bowl guard 4 is prevented and the bowl guard 4 is held in the attached state.

On the other hand, when removing the bowl 3, as shown in FIG. When you do this, the tongue piece 22
The tip of the bowl is removed from the engagement groove 25, and in this state, the bowl 3 and the bowl guard 4 are rotated until the flanges 15 and 16 are located between the hooks 12.
When the bowl guard 4 is pulled, the collar 16 is attached to the hook part 1.
When the bowl guard 4 is removed by passing between 2 and then pulling the bowl 3, the collar 15 is attached to the hook 1.
2 and the bowl 3 is removed.

Note that the present invention is not limited to the lubricator shown in the above embodiment, but also includes a bowl that receives water droplets and dust removed by the filter member on the lower surface of the body that has air circulation and has a filter member interposed in the middle. It is also possible to apply the same method to a filter equipped with a bowl guard that protects the bowl.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of one embodiment of the present invention;
The figure is a sectional view thereof, and FIGS. 3a and 3b are enlarged sectional views showing the engaging portion of the tongue piece and the engaging groove. A... Lubricator, 1... Body, 2... Air flow path, 3... Bowl, 4... Bowl guard,
11... Mounting tube, 12... Latching part, 15... Tsuba,
16... Tsuba, 17... Convex part, 18... Concave part, 21
... elastic bending piece, 22 ... tongue piece, 23 ... pressing portion, 25 ... engagement groove.

Claims (1)

[Scope of utility model registration request] In an attachment/detachment device for removably attaching a cup-shaped bowl to a body having an air flow passage of pneumatic equipment such as a filter or a lubricator, a plurality of hooks are attached to the mouth side of the inner circumferential surface of a circular attachment cylinder formed in the body. Stop portions are protruded at regular intervals in the circumferential direction, and a plurality of flanges are protruded at regular intervals on the outer periphery of the mouth edge of the bowl and a bowl guard made of synthetic resin that is fitted onto the bowl. , and forming irregularities on the bowl and the bowl guard for positioning the bowl and the bowl guard at an angle where the flanges align with each other,
The flange of the bowl and the bowl guard is fitted into the mounting cylinder from between the latching portion of the body, and the bowl and the bowl guard are rotated by a certain angle, so that the flange is hooked to the latching portion. a direction in which the tip part is separated outwardly from the outer circumferential surface of the bowl guard by pressing the rear end toward the center of the bowl guard on the outer circumferential surface of the bowl guard; A tongue piece that inclines to the side is integrally projected through an elastic bending piece, and the tip of the tongue piece engages at a position where the bowl and the bowl guard are attached to the body, thereby rotating the bowl and the bowl guard. A bowl attaching/detaching device for pneumatic equipment, characterized in that a circumferential engaging portion is formed on the outer circumferential surface of the body to prevent this.