JPH0410457Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a flow rate adjustment operating device for gas appliances, etc., which adjusts the amount of gas to a gas burner according to low heat, medium heat, high heat, etc.

[Prior Art] Conventionally, as this type of operating device for gas flow rate adjustment, the present applicant's Utility Model Registration Application No. 67302 filed in 1981 discloses a device in which a cam surface provided at the tip of a control lever opens and closes a needle-type control valve. The shaft is configured to be pushed through a leaf spring, and the operating shaft is moved forward and backward by rotating the adjustment lever to open and close the control valve.

[Problems to be solved by the invention] The adjustment lever protrudes from the surface of the panel plate and is rotated by a knob at the protruding end, but the rotation range of the adjustment lever is limited to adjust the flow rate from simmering to high heat. A large stroke is required as
In this case, the distance of the knob of the adjustment lever from the surface of the panel board increases or decreases, causing it to protrude considerably, resulting in an unsightly appearance.

This device applies a reciprocating motion in the right angle direction to the operating shaft that opens and closes the flow control valve through the rotational motion of the cam body of the linear reciprocating motion of the sliding body, so that the knob of the sliding body moves along the surface of the panel board. To provide an operating device which can be slid linearly and parallelly, and therefore can take a desired large stroke from low heat to high heat, and can make fine adjustments.

[Means for resolving the problem] In order to solve the problem, this invention is equipped with a sliding body that can freely slide a certain stroke in the guide groove of the frame body, and the sliding body is provided with a sliding body in a direction perpendicular to the sliding direction. The other end of the cam body, which has a cam surface that pivots one end on the frame body, is pivotally connected to the long hole provided in the frame body, and the operating shaft of the flow rate control valve is connected directly or indirectly to the cam surface of the cam body. The object of the present invention is to provide a technical means for moving a contact-related actuating shaft forward and backward.

[Operation] With the structure of this invention, by linearly reciprocating the sliding body along the guide groove, the other end of the cam body, which has one end connected to the frame body through a long hole perpendicular to the sliding direction, is actuated. The cam surface of the cam body moves the operating shaft back and forth in the right angle direction directly or indirectly through a lever plate to adjust the flow rate of the flow rate control valve, and adjusts the flow rate to low, medium, high heat, etc. It can be considered as flow rate.

[Example] The invention will be described below based on an example shown in the drawings.

In FIGS. 1 to 5, 1 is a frame having a U-shaped cross section, and a concave guide groove 2 is formed on the lower surface of the frame.
A sliding body 3 is provided to freely slide over a fixed stroke. The sliding body 3 shown in the embodiment has a long groove 8 bored in the sliding direction in the center of a rectangular body that fits freely in the guide groove 2 of the frame 1, and operates in a direction perpendicular to the rectangular body. A projecting piece 9 is integrally formed to form a long hole 4 in a direction perpendicular to the long groove 8.
A long groove 8 is formed on the bottom of the guide groove 2.
The regulating shaft 10 is fixed therethrough, and the sliding body 3 can be slid within the range of the longitudinal dimension of the long groove 8.
Reference numeral 5 denotes a cam body having an arcuate cam surface 5a centered at point O, and a support portion 11 protruding from one end of the base end of the cam body 5 is provided on the upper surface of frame body 1 with its axis centered at point O. A support part 13 which is pivoted by pivot shafts 12 attached at different positions and protrudes from the other end is pivotally connected by a connecting pin 14 which can be inserted into the elongated hole 4 of the operating protrusion 9 of the sliding body 3. , due to the sliding of the sliding body 3, the connecting pin 1
The support portion 13 of the cam body 5 is rotated about the pivot shaft 12 while rotating the cam body 4 within the elongated hole 4. 15
is a knob attached to the operating portion 3a of the sliding body 3. Reference numeral 6 denotes a lever plate which is pivoted to the frame body 1 by a pivot 16, and its tip is brought into contact with the cam surface 5a of the cam body 5, and the tip of the operating shaft 7 of the gas amount control valve V is placed at a right angle in the middle thereof. Contact related cam body 5
The rotational movement causes the operating shaft 7 to move forward and backward in a direction perpendicular to the sliding direction of the sliding body 3 via the lever plate 6. The frame body 1 of the operating device consisting of the sliding body 3, cam body 5 and lever plate 6 is screwed to the valve body 20 of the gas flow rate regulating device A.

In the embodiment, the gas flow rate adjustment device A includes a gas flow rate adjustment valve V with a bypass hole 22 formed in the tip shaft portion 21 to ensure a minimum gas flow path.
The control valve V is biased in the opening direction by the spring 23,
The amount of gas supplied to the gas burner can be increased or decreased by moving the tip valve shaft 21 toward and away from the fixed cylinder 24 provided with the gas flow path 25, thereby controlling the flame to simmer, medium heat, low heat, etc. . 26 is a gas supply path to the gas burner.

A gas point reducer B is connected to the main gas passage 30 in which the control valve of the flow rate control device A is disposed through a supply path 26. The gas point igniter B shown in the embodiment includes a first main valve V ₁ in the gas introduction passage 31 which is biased in the closing direction by a spring 32 so as to be able to come into contact with and separate from the valve seat 33.
A gas passage 34 communicating with the main gas communication passage 30 is provided on the downstream side of the first main valve V 1 , and a connecting rod 35 is provided in the gas passage 34 on the same axis as the first main valve V 1 and interlocked with the first main valve V ₁ . a second main valve formed with a tapered cam body 36 for actuating the valve shafts of the bypass valve _V3 and the pilot valve _V4 , which are disposed perpendicular to the main valve V3, at the time of ignition;
The main valve V ₂ is biased in the closing direction by the spring 37 so as to be able to approach and separate from the valve seat 38, and the main valve V ₂ is controlled by the operating mechanism C as appropriate via the stroke control device D.
_axially move the valve shaft 39 _of
Open and close the gas introduction passage 31 with the gas flow control valve V.
At the same time, at the time of ignition, the cam body 36 opens and closes the bypass valve _V3 and the pilot valve _V4 , respectively, against the spring force, thereby supplying gas through the bypass passage and the pilot passage. supply. By attaching the axis O of the cam surface 5a and the pivot shaft 12 of the cam 5 eccentrically, the diameter of the cam surface 5a from the pivot shaft 12 can be continuously changed, and the cam surface 5a can be continuously machined into a perfect circle. There are effects that can be achieved.

As mentioned above, the gas introduction passage 3 is connected to the flow rate adjustment device A.
The amount of gas supplied through 1 is controlled by the control valve V using the operating device related to this invention, and the amount of gas supplied through 1 is adjusted to simmer, medium heat,
Adjust to high heat as appropriate. That is, when used as a simmering flame (low flame), as shown in Fig. 3, the sliding body 3
When the cam body 5 is moved downward and the cam body 5 is rotated clockwise, the diameter of the cam surface 5a increases, and the cam surface 5a pushes the lever plate 6, and the lever plate 6 moves the operating shaft 7 to the spring 23 of the control valve V. The tip valve shaft portion 21 of the control valve V is inserted into the fixed cylinder portion 24 and brought into close contact with the bypass hole 22 to achieve a minimum gas flow rate of only the bypass hole 22.

Next, when using it as a medium flame, as shown in Fig. 1, move the sliding body 3 upward to the middle and turn the cam body 5 counterclockwise to reduce the diameter of the cam surface 5a. The lever plate 6 is pressed along the cam surface 5a by the elasticity of the spring 23 and is slightly returned.
The operating shaft 7 and the control valve V are also returned to the valve shaft portion 21.
is slightly separated from the fixed cylinder part 24, and the gas flow rate flowing through the narrow gap and the bypass hole 22 produces a medium flame.
To make the heat even stronger, as shown in Fig. 4, move the sliding body 3 upwards and turn the cam body 5 further to move the lever plate 6 back further, and the operating shaft 7 and the cooking valve V also move. The gap between the return valve shaft part 21 and the fixed cylinder part 24 is widened to increase the amount of gas flowing together with the bypass hole 22 to create a strong flame. In the above, the stroke of the sliding body 3 is determined by the longitudinal dimension of the long groove 8 of the sliding body 3, and this is made large, and the amount of eccentricity between the center O of the cam surface 5a and the pivot shaft 12 is reduced accordingly. If the change in diameter is made small, the gas flow rate to the gas burner can be finely adjusted by the control valve V. Although the above embodiment shows the case where the lever 6 is interposed between the cam body 5 and the actuating body 7, the lever 6 may be omitted and the cam body 5 and the actuating body 7 may be directly brought into contact with each other. Although the main text has described the adjustment of the flow rate of gas, it is clear that the same thing can be said about the adjustment of the flow rate of other gases and liquids.

[Effects of the invention] According to this invention, the sliding body that operates the control valve of the flow rate adjustment device can be slid linearly along the panel surface, so the stroke from simmering to high heat can be increased by simply turning the knob on the sliding body. The knob can be operated parallel to the surface of the panel, and the protruding dimension of the knob can therefore be kept small and constant, giving it a good appearance and ease of use. In addition, since the stroke of the sliding body can be increased, it is possible to finely adjust the amount of gas from simmering to high heat, and the operating device, which consists of the sliding body, cam body, and lever plate, can be housed compactly within the frame. It has many practical benefits, such as the fact that it can be made into a simple unit and that it is simply screwed onto the valve body, making the installation of the operating device very easy.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing a gas flow rate regulator and a gas flasher equipped with an operating device for regulating gas flow rate according to this invention, Fig. 2 is a cross-sectional view of the operating device of this invention, and Fig. 3 is an operation device. FIG. 4 is a side sectional view of the device with the sliding body set to low heat, FIG. 4 is a side sectional view of the device with the sliding body set to high heat, and FIG. 5 is an exploded perspective view of the operating device. 1... Frame body, 2... Guide groove, 3... Sliding body, 4
... Long hole, 5 ... Cam body, 5a ... Arc-shaped cam surface, 6 ... Lever plate, 7 ... Actuation shaft, V ... Gas amount control valve, A ... Gas flow rate control device, B ... ... gas flasher.

Claims (1)

[Scope of utility model registration request] A sliding body 3 is provided in the guide groove 2 of the frame body 1 so as to be able to slide freely over a fixed stroke, and one end of the frame body 1 is pivotably supported in an elongated hole 4 provided in the sliding body 3 in a direction perpendicular to the sliding direction thereof. The other end of the cam body 5 having an arcuate cam surface 5a is pivotally connected to the cam body 5, and the operating shaft 7 of the flow control valve is orthogonally brought into contact with the cam surface 5a of the cam body 5, directly or indirectly; A flow rate adjustment operating device that adjusts the opening degree of a flow rate control valve by applying linear reciprocating motion of a sliding body 3 to an operating shaft 7 through a rotational movement of a cam body 5 to give a forward and backward movement in a right angle direction.