JPH0124480Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a simple gas stove that uses a small-capacity gas cylinder as a fuel source in a so-called cassette type. The present invention relates to a gas cylinder connection device that presses and connects a cylinder connection port of a connection tool by an external operation.

(Problems with conventional technology) Press connection of cylinders involves, for example, pushing open a check valve installed at the cylinder connection port for safety. If it is pushed back even slightly, there is a risk of gas leakage, so apply a relatively large pressing force.
It must also be ensured that proper connections are maintained. Conventionally, there has been known, for example, the one disclosed in Japanese Utility Model Application Laid-open No. 56-85799, which allows for easy pressure connection of cylinders. However, the thing is
It has an indirect connection structure in which the cylinder press slide, which presses and connects the cylinder, and the arc rotation arm, which is rotated in an arc through a gear by operating a lever from outside the stove body, are linked in a crank shape. It is complicated, and linking the cylinder pressure slide and the arc rotation arm, which are separately attached to the stove body, requires attaching them to the stove body and then linking them while adjusting their mutual positions. This means that one end must be connected to one end and the other end must be connected to the other end, which also complicates the assembly process. Therefore, the cost of the product is also high.

On the other hand, as described in Japanese Utility Model Application Publication No. 56-163900, it is also known that the cylinder pressing slide is directly operated by an operating lever. Although this device requires a spring-biased locking member that is connected to both the operating lever and the cylinder press slide and locks the cylinder press slide in the cylinder press connection position, the structure is simpler than the previous conventional example. ing. However, since the operation is directly transmitted from the operating lever to the cylinder pressing slide, it is difficult to set the transmission ratio in a wide range.

(Means for Solving the Problems) In order to solve both of the above-mentioned problems, the present invention connects the gas cylinder stored in the gas cylinder storage chamber by pressure to the cylinder connection port of the cylinder connection tool, and also connects the gas cylinder to the cylinder connection port of the cylinder connection tool. In a gas cylinder connecting device for a simple gas stove, which is equipped with a cylinder pressing slide to release, an operating lever for externally operating the cylinder pressing slide, and a means for biasing the cylinder pressing slide in the direction of disconnection, the passive surface of the cylinder pressing slide is rotated in an arc. A rotational movement member such as an arm or a cam that pushes in the cylinder connection direction and releases the pushing is provided, and the rotational movement member and the operating lever are connected by meshing gears that are integrally or directly connected to them, The operating range of the rotational movement member is set so that the line connecting its rotation center and the pushing point has a dead center perpendicular to the passive surface at the pushing position where the cylinder pressing slide is brought into the cylinder connected state. It is characterized by the fact that

(Function) By the rotational movement members such as arms and cams that are rotated through gears by external operation of the operating lever,
The cylinder pressing slide is directly pushed and operated, and the gas cylinder can be easily and reliably pressed and connected to the cylinder connection port using a lever and a desired transmission ratio.

When the rotational movement member has a line connecting its own rotational center point and a pushing point relative to the passive surface at right angles to the passive surface,
Even if the cylinder pressing slide attempts to move back in the direction of disconnection due to its biasing means, the acting force acts on the rotational movement member along the above-mentioned line, and the force that causes the rotational movement member to rotate upward or downward is generated. The operating range is set to have an operating point (dead center) that does not occur. Therefore, the rotation moving member is rotated in an arc to the dead center position (actually, a position slightly above the dead center position) to push the passive surface of the cylinder pressing slide in the cylinder connection direction, and the gas cylinder is moved to the cylinder connection port. When the press connection is made and the state is maintained, the operating system including the rotational movement member is automatically stabilized. In addition, when disconnecting a cylinder, simply move the dead center position of the rotary moving member slightly toward the cylinder disconnection side, and the rest is done by the biasing force of the biasing means and the restoring force of the cylinder's own nozzle. Therefore, the cylinder is automatically disconnected.

(Embodiment) To explain the embodiment shown in FIGS. 1 and 2, a stove body 1 is provided with a cylinder storage chamber 2 adjacent to a gas burner installation chamber (not shown). A cylinder connector 4 is installed at one end of the cylinder storage chamber 2 to connect the small-capacity gas cylinder 3 stored in the cylinder storage chamber 2 to a gas burner (not shown). The cylinder connector 4 is provided with a cylinder connection port 6 with a check valve at one end of a gas supply path 5 to the gas burner, and a gas pressure regulator 7 and a gas tank 8 in the middle. The gas pressure regulator 7 has
An abnormal pressure safety valve 9 is provided which shuts off the gas supply path 5 when the supply gas pressure is abnormally high. safety valve 9
consists of a reversing spring 10 that operates in reverse at abnormal pressure, and a valve body 11 that shuts off the gas supply path 5 in conjunction with the reverse operation of the spring 10. It has a reset lever 12 that can be operated to return to the state before inversion.

At the bottom of the cylinder storage chamber 2, there is provided a cylinder pressing slide 13 for press-connecting the gas cylinder 3 to the cylinder connection port 6 and releasing the press to disconnect the gas cylinder 3. This slide 13 is a metal band member that is inserted and held so as to be able to slide in the axial direction into windows 14 and 15 that are opened at two locations in the axial direction front and back of the cylinder connection port 6 at the bottom of the cylinder storage chamber 2. For easy insertion, screw 16 at one point in the middle.
Although the two parts are connected together, the whole can be integrated. At the end of the slide 13 far from the cylinder connection port 6, there is a pushing piece 13a for pushing the bottom of the cylinder 3 toward the connection port 6, and at the end on the side of the connection port 6, a passive piece 13b is in a raised state. It is formed by bending. Reference numeral 17 denotes a spring acting between the cylinder pressing slide 13 and the bottom raised piece 18 of the cylinder storage chamber 2, which biases the slide 13 in the direction of releasing the pressing connection of the cylinder 3.

On one side of the gas pressure regulator 7, there is an operating lever 19 with an operating part 19a facing outside the container body 1, and an operating arm 22 that is rotated in an arc via gears 20 and 21 when the lever 19 is operated. They are supported by shafts 23 and 24, respectively. The gears 20 and 21 are integrally formed at the base of the operating lever 19 and the operating arm 22. The operating arm 22 has its tip operating portion 22a facing the passive piece 13b of the cylinder pressing slide 13, and is rotated from the position shown by the solid line in FIG. 1 to the position shown by the dashed line in FIG. The gas cylinder 3 in the cylinder storage chamber 2 is pressed and connected to the cylinder connection port 6 by the pushing piece 13a.

This pressing connection state is achieved when the line 25 connecting the rotation center point 24a of the actuating arm 22 and the pushing point P with respect to the perpendicular passive piece 13b becomes horizontal and parallel to the forward and backward direction of the slide 13. It is stabilized by being rotated to the dashed-dotted line position slightly beyond point DP. In other words, when the line 25 is perpendicular to the passive piece 13b, even if the slide 13 attempts to move back in the direction away from the connection port 6 due to the spring 17 (to disconnect the cylinder), the acting force will be applied to the actuating arm 22 along the line 25.
Since the force acts upward, no force is generated that would cause the arm 22 to rotate upward or downward. Since this line 25 slightly exceeds the pushing dead center DP, the arm 22 will receive a slight upward rotational force, but this rotational force will push the operating lever 19 etc. to the operating limit position, and the dead center More stable than on DP.
The rotation of the actuating arm 22 at the dashed-dotted line position is restricted as follows.
The operating lever 19 is regulated by coming into contact with the upper edge of a lever protruding window 26 (dotted chain line in FIG. 1) provided on the operating surface of the container body 1.

To release the pressed connection state of the cylinder 3 to the connection port 6, the lever 19 is rotated from the dashed-dotted line position to the solid line position in FIG. 1, and the actuating arm 22 is also rotated from the dashed-dotted line position to the solid line position. Since the cylinder pressing slide 13 is released from being pressed against the passive piece 13b, the slide 13 is moved to the right by the bias of the spring 17, and the pressing movement against the cylinder 3 toward the connection port 6 is released. As a result, the cylinder 3 is pushed out of the connection port 6 by the return movement of the check valve provided in the connection port 6. In fact, if the actuation arm 22 rotates even slightly below the dead center DP, the biasing force of the spring 17 acting on the cylinder pressing slide 13 will be applied to the actuation arm 22.
The actuating arm 22 and the operating lever 19 are automatically returned to their original positions. The operation of the arm 22 by the lever 19 is as follows:
This is done smoothly and reliably through the gears 20 and 21, and easily by the lever ratio of the lever 19. Moreover, if the diameter of the drive side gear 20 is made smaller than that of the driven side gear 21, the operation becomes even easier depending on the lever ratio and gear ratio.

The operation lever 19 is provided with a valve reset cam 27 that faces the external operation part 12a of the reset rod 12 of the safety valve 9. When connecting the cylinder 3 to the connection port 6, the reset rod 12 is moved to the cam 2.
7, when the safety valve 9 is in the passage blocking state shown by the dashed line in FIG. 3, it is returned to the solid line state, so that the stove becomes usable at the same time as the cylinder 3 is connected. Further, the actuating portion 22a of the actuating arm 22 is a roller member supported by a shaft 28, and eliminates frictional resistance and wear when the slide 13 is pushed against the passive piece 13b. 13
A rib c is press-formed to increase the upright rigidity of the passive piece 13b. Reference numeral 29 is an operation knob for the gas cooker 8. Further, the actuating arm 22 may be replaced with another rotating member such as the circumferential cam 30 shown in FIG. 4.

FIG. 5 shows the passive piece 1 of the cylinder pressing slide 13.
A vertically elongated passive hole 13d is formed in the passive hole 13b.
3d, a shaft-supported roller member 28, which is the actuating portion 22a of the actuating arm 22, is engaged, so that the slide 13 is interlocked with the movement of the actuating arm 22 and the reciprocating motion. Therefore, the reciprocating spring acting on the slide 13 may be omitted.

(Effects of the invention) According to the invention, the cylinder pressing slide is directly pushed and operated by a rotating member such as an arm or a cam that is rotated through a gear by external operation of a lever, and the gas cylinder is pressed. Since the cylinder connection port is press-connected, the cylinder connection operation can be easily and reliably performed with the lever and gear at the desired transmission ratio. In particular, since the actuating arm directly pushes and operates the cylinder pressure slide, it is of course possible to use an indirect connection structure such as a conventional crank type link connection.
Although an indirect operation method is adopted to achieve the above characteristics without the need for direct connection, the structure has a small number of parts and the assembly work is simple, so it can be provided at low cost and the cylinder can be maintained in the connected state. The function is sufficiently obtained by the dead center action of the rotating member, and there is no problem.

Moreover, in the present invention, as described in the above (effect) section, the cylinder connection state is maintained by the dead center action of the rotational movement member, and as a result, when the cylinder connection is released, the dead center position of the rotational movement member is Simply move the button slightly beyond the cylinder disconnection side, and the cylinder will be automatically disconnected due to the bias of the biasing means and the restoring force of the cylinder's own nozzle. This can be done particularly easily and quickly, and is effective in disconnecting cylinders in the event of an abnormality.

[Brief explanation of the drawing]

Figure 1 is a side view of one embodiment, Figure 2 is a slope view,
FIG. 3 is a side view of a part of the cylinder connector in cross section, FIG. 4 is a side view of the main part of a modified example, and FIG. 5 is a perspective view of the main part of another embodiment. 1...Stove body, 2...Cylinder storage room, 3...
...Gas cylinder, 4...Cylinder connection tool, 6...Cylinder connection port, 13...Cylinder pressing slide, 13a
...Pushing piece, 13b... Passive piece, 13d... Passive hole, 17... Spring, 19... Operating lever, 19a
...Operation unit, 20, 21...Gear, 22...Operating arm rotation member, 30...Surface cam rotation member, 24a...Rotation center point of rotation member, P
. . . Pushing point of the rotational movement member, 25 . . . Line connecting the rotational center point and the pushing point.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A cylinder pressing slide that presses and connects the gas cylinder stored in the gas cylinder storage chamber to the cylinder connection port of the cylinder connection device and releases the connection, and an operating lever that externally operates the cylinder press slide. , a gas cylinder connecting device for a simple gas stove equipped with a means for urging a cylinder pressing slide in the direction of disconnection, in which the passive surface of the cylinder pressing slide is pushed in the cylinder connecting direction by arc rotation and the pushing is released. A rotational movement member such as an arm or a cam is provided, and the rotational movement member and the operating lever are connected by meshing gears that are integrated or directly connected thereto, and the rotational movement member brings the cylinder pressing slide into the cylinder connected state. A gas cylinder connection device for a simple gas stove, characterized in that an operating range is set such that a line connecting the center of rotation of the device and the pushing point at the pushing position has a dead center perpendicular to the passive surface. (2) The gas cylinder connection device for a simple gas stove as claimed in claim 1, wherein the rotational movement member is stabilized with a rotational position slightly beyond the dead center position as the pushing end point. (3) The gas cylinder connection device for a simple gas stove as claimed in claim 1, in which the rotational movement member is a circumferential cam that is stabilized by contacting the cylinder pressing slide with a wide flat surface at the dead center position.