JPH0439499Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention prevents the operating lever from rotating due to an unexpected accident in the fully open and fully closed positions, and prevents the operating lever from rotating beyond a predetermined range. Concerning gas sticks that can be prevented from rotating.

[Prior Art] As a conventional gas kottoku kotuku of this type, there is one described in Japanese Utility Model Application Publication No. 167978/1983.

No. 5 regarding Gaskottoku described in this bulletin.
Referring to the drawings and FIG. 6, reference numeral 1 in the drawings indicates a main body, in which a gas inflow path 1a and an outflow path 1b are formed, and these inflow path 1a and outflow path 1b. A tapered plug insertion hole 1c is formed between the two. A plug body 2 having a gas passage 2a is rotatably inserted into the plug insertion hole 1c, and by rotating the plug body 2, the center line of the gas passage 2a is aligned with the inlet passage 1a and the outlet passage 1b. A fully open state that matches the
The gas passage 2a can be switched to a fully closed state in which the center line is perpendicular to the inlet passage 1a and the outlet passage 1b.

Further, an operating lever 5 is unrotatably attached to the stopper 2 via a connecting member 3 and a key member 4. This operating lever 5 has a lock pin 6.
is provided so as to be movable in the direction of the rotational axis of the plug body 2. The lock pin 6 is for preventing the operating lever 5 from being rotated due to an unexpected accident in the fully open position or the fully closed position.
d, and in the fully closed position, it fits into the recess 1e or 1f.

Then, hold the lock pin 6 by its knob 6a and lift it against the coil spring 7, and in this state rotate the operating lever 5 to lock it in either of the recesses 1d, 1.
By fitting into the holes e and 1f, it is possible to prevent the operating lever 5 from rotating from the fully open position or the fully closed position due to an unexpected accident.

Also, to explain the over-rotation prevention mechanism of the operating lever 5, the Kotoku main body 1 has convex portions 8a, 8b,
The rotation regulating plate 8 is prevented from rotating by fitting the portions 8c into the recesses 1d, 1e, and 1f, respectively.
is installed. This rotation regulating plate 8 has a folded portion 8d formed at a position spaced apart by 180 degrees in the circumferential direction from the convex portion 8a. In addition, the connecting member 3 includes
A rotation regulating protrusion 3a having a substantially semicircular shape is formed, and when the operating lever 5 is rotated from the fully open position to the fully closed position in the forward and reverse directions, the circumferential end surface of the protrusion 3a abuts against the folded portion 8d. , it is now impossible to rotate any further. In other words, the operating lever 5 can only be rotated within a range of 90 degrees in forward and reverse directions around the fully open position. Note that when the protrusion 3a abuts against the folded portion 8d, the lock pin 6 faces the recessed portions 1e and 1f.

[Problems to be solved by the invention] In the above-mentioned gas kettle, the malfunction prevention mechanism and over-rotation prevention mechanism of the operating lever 5 are provided between the kettle main body 1, the operating lever 5, and the connecting member 3. Therefore, there was a problem that the structure was complicated and the manufacturing cost increased.

[Purpose of the invention] This invention was made in order to solve the above-mentioned problems, and its purpose is to provide a gas tank that has a simple structure and can be manufactured at low cost.

[Structure of the invention] In order to achieve the above object, this invention provides a protrusion on the operating lever that protrudes in the same direction as the lock pin and is spaced approximately 180° from the lock pin around the rotation axis. , approximately around the rotation axis for each recess in the Kotoku body.
They are separated by 90 degrees, and when one engages with the lock pin to prevent the operating lever from rotating in one direction, the other engages with the protrusion and prevents the operating lever from rotating in the other direction. The main structural feature is that a pair of engaging portions are provided.

[Embodiment] An embodiment of this invention will be described below with reference to FIGS. 1 to 4. In addition, Fig. 1 is a longitudinal sectional view of the gas kettle according to this invention, Fig. 2 is a plan view with the operating lever removed, Fig. 3 is a sectional view taken along the - line in Fig. 2, and Fig. 4 is the operating lever. FIG. 2 is a plan view from below.

The reference numeral 11 in the figure is the main body of the pot, which includes an inflow path 11a, an outflow path 11b, and a plug insertion part 1.
1c is formed. In the plug insertion part 11c, a spherical plug body 12 whose rotational axis is perpendicular to the inflow path 11a and the outflow path 11b is attached to valve seat members 13, 1 made of resin.
It is rotatably provided via 4. This plug body 12 has a gas passage 12 orthogonal to its rotation axis.
a is formed, and the gas passage 12a faces the same direction as the inflow passage 11a and the outflow passage 11b in a fully open state, and the gas passage 12a faces in a direction perpendicular to the inflow passage 11a and the outflow passage 11b in a fully closed state. It is now possible to switch to

Further, an operating lever 16 is attached to the upper part of the stopper 12 via a connecting member 15 so as not to be rotatable. This operating lever 16 has a circular base 16a fixed to the connecting member by a bolt 17.
and a grip portion 16b extending from the base portion 16a in a direction substantially perpendicular to the rotation axis.
A lock pin 18 facing in the direction of the rotation axis is mounted near the grip portion 16b of 6a so as to be movable in the same direction. This lock pin 18 has a grip portion 16b.
A knob 18a is formed that extends along the
By grasping the knob 18a together with the grip 16b, the knob 18a can be lifted against the coil spring 19. The operating lever 16 also has a lock pin 18.
An engagement pin (protrusion) 20 is provided parallel to the rotation axis at a position 180° apart from the rotation axis. The diameter of this engagement pin 20 is the same as that of the lock pin 18.
It is formed to have approximately the same diameter as the lower end of the.

A recess 11d is formed on the upper surface of the lock main body 11 facing the operating lever 16 at a position facing the lock pin 18 in the fully open state. This recess 11d corresponds to the operating lever 16 in the fully open position.
The lower end of the lock pin 18, which is biased by a coil spring 19, is inserted into the lock pin 18 to prevent it from malfunctioning due to an unexpected accident. Further, the upper surface of the Kotuku main body 11 located on the opposite side to the recess 11d is separated from the recess 11d.
Approximately in the forward and reverse directions centering on points 180° apart.
90° range (lock pin 18 or engagement pin 20
As a result, a pair of rising wall portions 11e and 11f (an engaging portion ) is formed. A pair of rising wall portions 11e,
11f is for preventing excessive rotation of the operating lever 16, and when the operating lever is rotated approximately 90° in the forward and reverse directions from the fully open position, the engagement pin 18 rises and engages either of the wall portions 11e and 11f. You will run into it.

In the gas tank having the above structure, the lock pin 18 is inserted into the recess 1 from the fully open state shown in FIG.
1d and rotates the operating lever 16 approximately 90° in one direction, the engagement pin 20 abuts against one wall portion 11e (11f). This prevents excessive rotation of the operating lever 16. In this state, when the lock pin 18 is released and moved downward, the lock pin 18 is separated from the engagement pin 20 by 180 degrees, so the lock pin 18 is moved toward the other wall portion 11f (11e).
It will be located just before. Therefore, when an attempt is made to rotate the operating lever 16 in the other direction, the lock pin 18 abuts against the other wall portion 11f (11e). In other words, the operating lever 16 is prevented from rotating in forward and reverse directions by the engaging pin 20 and the locking pin 18, thereby preventing erroneous operation in the fully closed position.

The gas tank can be sealed by screwing in the sealing bolt 21 and fixing the lock pin 18 in the fully closed position.

In this way, in the gas kettle according to this invention, since the malfunction prevention mechanism and the over-rotation prevention mechanism are provided between the kettle main body 11 and the operating lever 16, the structure can be simplified. .
Moreover, a pair of rising wall portions (engaging portions) 11
e, 111f not only serves as an over-rotation prevention mechanism, but also as a malfunction prevention mechanism, so the number of components for malfunction prevention can be reduced by that much, which further improves the structure. It can be made simple, and as a result, manufacturing costs can be reduced.

Further, in the gas cutter of the above embodiment, since the rising wall portions 11e and 11f are formed on the same plane, by cutting off the upper surface of the gas cutter body 11 by moving a face milling cutter or the like in a straight line,
There is also an advantage that the pair of rising wall portions 11e and 11f can be formed at the same time.

In addition, in the above embodiment, the operating lever 1
6 is provided with a separate engagement pin 20,
The operating lever 16 may be integrally provided with a protrusion.
Further, as the engaging portions that engage with the lock pin 18 and the engaging pin 20, the rising wall portions 11e, 1
It is not limited to 1f, and may be other values.

[Effects of the invention] As explained above, according to the gas tank of this invention, the operating lever is provided with a protrusion that protrudes in the same direction as the lock pin and is spaced approximately 180° from the lock pin around the rotation axis. At the same time, they are spaced approximately 90° apart from each other around the rotation axis with respect to the recessed portions of the lock body, and when one engages with the lock pin and prevents the operating lever from rotating in one direction, the other protrudes. Since the device is provided with a pair of engaging portions that engage with the operating lever and prevent the operating lever from rotating in the other direction, the malfunction prevention mechanism and over-rotation prevention mechanism prevent the operating lever from rotating in the opposite direction. The structure is simpler than the conventional gas tank which is provided between three persons. Moreover, since the pair of engaging portions not only performs the function of preventing excessive rotation but also the function of preventing malfunction, a structure for preventing malfunction of the operating lever in the fully closed position is no longer required. The structure can be further simplified, thereby producing effects such as reducing manufacturing costs.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of this invention, with Figure 1 being a longitudinal cross-sectional view, Figure 2 being a plan view with the operating lever removed, and Figure 3 being the same as in Figure 2. 4 is a plan view of the operating lever from below; FIGS. 5 and 6 show an example of a conventional gas tank; FIG. 5 is a vertical sectional view thereof; FIG. FIG. 3 is a plan view with the operating lever removed. 11... Kotoku body, 11d... Recessed part, 11
e, 11f...Rising wall portion (engaging portion), 12
... Plug body, 16 ... Operation lever, 18 ... Lock pin, 18a ... Knob portion, 19 ... Coil spring (elastic member), 20 ... Engagement pin (protrusion).

Claims (1)

[Scope of utility model registration request] A Kotuku body, a stopper that is rotatably provided inside the Kotuku body and rotates approximately 90 degrees in the forward and reverse directions from a fully open position to a fully closed state, and a proximal end of the stopper that rotates. It has an operating lever that is immovably attached and whose tip extends in a direction intersecting the rotational axis of the stopper, and a knob that extends along the operating lever, and is movable in the direction of the rotational axis on the operating lever. and an elastic member that urges the lock pin toward the stopper body, and a recess into which the lock pin fits when the stopper body is in a fully open position is formed in the stopper body. In the gas bottle, the operating lever is provided with a protrusion that protrudes in the same direction as the lock pin, and is spaced approximately 180° from the lock pin around the rotation axis, and the gas bottle body is provided with a protrusion that projects in the same direction as the lock pin. are spaced apart from each other by approximately 90° around the rotational axis, and when one engages with the lock pin to prevent rotation of the operating lever in one direction, the other engages with the protrusion. A gas kettle characterized by having a pair of engaging parts that prevent the operating lever from rotating in the other direction.