JP6021857B2 - Thermal power control device - Google Patents

Description

  The present invention relates to a thermal power adjustment device that is incorporated in a gas stove and adjusts the thermal power of a gas burner.

  A heating power adjustment knob for adjusting the heating power of the gas burner is provided on the front surface of the gas stove. This thermal power control knob is attached to the tip of a thermal power control lever that is a part of the thermal power control device. When the thermal power control knob is moved to the left and right, the thermal power control lever is swung left and right. A needle valve is connected to the heating power adjustment lever, and the needle valve moves forward and backward when the heating power adjustment lever is swung.

  When the needle valve advances and retreats, the passage area of the gas passage for supplying gas to the gas burner is expanded or narrowed, so that the amount of gas supplied to the gas burner increases or decreases. Thereby, it is comprised so that the thermal power of a gas burner may be adjusted (for example, refer patent document 1).

Japanese Patent Laid-Open No. 10-2556 (FIG. 1)

  The engagement structure of the heating power adjustment lever and the needle valve is such that the engagement pin protrudes at right angles to the advance / retreat direction opening of the needle valve, the guide portion guides the engagement pin in the advance / retreat direction, and the fire power adjustment lever. The engaging pin is inserted into both of the formed cam holes, and the engaging pin is advanced and retracted by moving the intersecting portion of the guide portion and the cam hole by swinging of the heating power adjusting lever.

  Because of such a structure, a part of the needle valve is exposed to the outside together with the engagement pin, and when a fluid such as simmering adheres to the exposed part of the needle valve, the needle valve sticks and does not advance or retreat, Or the malfunction of corroding the needle valve periphery arises.

  Then, this invention makes it a subject to provide the thermal-power adjustment apparatus which prevented the fluid from adhering to a needle valve in view of said problem.

In order to solve the above-described problems, a thermal power control device according to the present invention includes a thermal power control lever that swings in the left-right direction and a needle valve that moves forward and backward in conjunction with the swing of the thermal power control lever. In the thermal power control apparatus for adjusting the thermal power of the gas burner by increasing or decreasing the amount of gas supplied to the gas burner, a cover covering at least the upper side and the near side of the needle valve is provided on the thermal power control lever, and the needle The valve has an engagement pin that protrudes in a direction perpendicular to the advancing / retreating direction of the needle valve. The engagement pin is inserted through the upper surface of the cover, and the needle valve is advanced / retreated via the engagement pin. A cam hole is formed, and at least the inner surface of the cam hole and the guide surface on which the engagement pin slides are made of resin, reducing the frictional force when the engagement pin slides on the guide surface. Characterized in that that.

  By providing a cover that covers the needle valve, the fluid is prevented from adhering to the needle valve. However, if this cover is simply attached to the main body of the thermal power control device, a cover must be provided between the needle valve and the thermal power control lever, and the thermal power control lever is moved away from the center axis of the needle valve. This hinders advancement and retreat. Further, if the thermal power adjustment lever is covered with the cover, a clearance for the thermal power adjustment lever to swing must be provided, and the intrusion of the fluid cannot be effectively prevented. Therefore, in the present invention, the cover is provided on the heating power adjustment lever, and the cover is moved along with the swinging of the heating power adjustment lever. In addition, it covered the upper part of a needle valve with respect to dripping, such as spilling from the upper part, and it was made to cover the front side of a needle valve in order to respond | correspond to spraying of the detergent from the front.

The needle valve has an engagement pin that protrudes in a direction perpendicular to the advancing / retreating direction of the needle valve. The engagement pin is inserted into the upper surface of the cover, and the needle is inserted through the engagement pin. A cam hole for advancing and retracting the valve is formed, and at least an inner surface of the cam hole and a guide surface on which the engagement pin slides are formed of resin, and the friction force when the engagement pin slides on the guide surface Ru is reduced.

  In addition, a barrier that prevents the fluid entering the cam hole by blocking the fluid entering from the front may be formed on the front side of the cam hole.

  As is apparent from the above description, the present invention provides a needle valve that is provided on the thermal power adjustment lever and covered with a cover that swings integrally with the thermal power adjustment lever, so that there is no problem in the advancement and retraction of the needle valve. The fluid entering from the upper side or the near side through the heating power adjusting lever is surely blocked by the cover and does not contact the needle valve. Therefore, it is possible to reliably prevent the occurrence of problems such as sticking of the needle valve and corrosion around the needle valve.

The perspective view which shows the external shape of the thermal-power adjustment apparatus by this invention Exploded view around the thermal control lever Perspective view showing the shape of the thermal power adjustment lever Cross section of the first half of the thermal power control device

  With reference to FIG. 1, 1 is an example of a thermal power control apparatus according to the present invention. This thermal power control apparatus 1 has a thermal power control lever 2 and a point fire extinguishing button 3 attached to a main body 4. When igniting a gas burner (not shown) connected downstream, first, the fire extinguishing button 3 is pushed to start supplying gas to the gas burner, and a sparker provided near the gas burner is operated to ignite the gas burner. I do. When the ignition of the gas burner is completed, the heating power adjusting lever is swung left and right to adjust the heating power of the gas burner. And when extinguishing a gas burner, if pushing operation is again performed with respect to the fire extinguishing button 3, supply of the gas to a gas burner will be interrupted | blocked.

  With reference to FIG. 2, a needle valve 41 is accommodated in the main body 4. The front end portion of the needle valve 41 is exposed to the outside, and an engaging pin 42 projects from the exposed portion. On the other hand, a sheet metal guide plate 5 and a resin fire power adjustment lever 2 are attached to the upper portion of the main body 4. The guide plate 5 is fixed so as not to move with respect to the main body 4, but the heating power adjusting lever 2 is attached so as to be able to swing left and right by a screw 21.

  A guide hole 51 parallel to the advancing / retreating direction of the needle valve 41 is formed in the guide plate 5, and a cam hole 22 having a guide surface 22 a on the inner surface is inclined in the upper plate portion 25 in the heating power adjusting lever 2. Is formed. The engagement pin 42 is inserted through both the guide hole 51 and the cam hole 22. The guide plate 5 is formed with a retaining portion 52 for preventing the needle valve 41 from coming off from the main body 4 and falling off. When changing the thermal power, if the thermal power adjustment lever 2 is swung to the left or right, the engagement pin 42 moves along the guide surface 22a of the cam hole 22 and the guide hole 51, the needle valve 41 moves forward and backward, and the gas amount is adjusted. The At this time, since the heating power adjustment lever 2 is made of resin, the frictional force between the guide surface 22a and the supply pin 42 is small and the operation feeling is good.

  Since this thermal power control device 1 is incorporated in the gas stove device, if a fluid such as spilled spills from a pot heated by a gas burner, the thermal power control lever 2 is transmitted to the needle valve 41 from above or from above. There is a risk that the fluid will drip. Referring also to FIG. 3, the thermal power control lever 2 is formed with the upper plate portion 25 in order to receive the dropped fluid. In addition, detergent may be sprayed on the front surface of the gas stove device for cleaning, but the front plate portion 26 is formed in order to prevent the fluid as the detergent from being sprayed on the needle valve 41. Further, if the sprayed fluid reaches the upper plate portion 25, there is a risk that the fluid will drop onto the needle valve 41 through the cam hole 22. Therefore, the barrier portion 27 is formed so that the sprayed fluid does not reach the upper plate portion 25.

  In addition, a sliding portion 23 that is curved in an arc shape is formed in the lower portion of the heating power control lever 2. The sliding portion 23 is configured to contact a receiving portion 44 formed on the main body 4. When the thermal power adjustment lever 2 is operated to the left and right to swing the thermal power adjustment lever 2, if a downward force is applied to the distal end, the thermal power adjustment lever 2 tends to bend downward. If the thermal power adjustment lever 2 bends downward, the stress at that time is concentrated on the portion pressed by the screw 21. Especially when the thermal power control lever 2 is made of resin, the stress concentrated portion is damaged. May occur.

  However, in the present invention, the sliding portion 23 is formed on the thermal power adjusting lever 2 and the sliding portion 23 is in contact with the receiving portion 44. Therefore, even if the thermal power adjusting lever 2 tries to bend downward, the sliding portion 23 slides. The portion 23 abuts on the receiving portion 44 to prevent the heating power adjustment lever 2 from bending downward. In addition, when the tip of the thermal power adjustment lever 2 is pulled upward, if the thermal power adjustment lever 2 bends upward, there is a risk that the portion pressed by the screw 21 will be damaged. Therefore, a stopper 43a is formed on the upper surface of the rail member 43, and the outer peripheral surface of the sliding portion 23 is in contact with the stopper 43a to prevent the heating power adjusting lever 2 from being bent upward.

  Referring also to FIG. 4, the rail member 43 is for guiding the point-extinguishing button 3 so as to be movable in the front-rear direction. A pair of left and right push portions 31 are formed on the upper surface of the point fire extinguishing button 3, and these push portions 31 move in the front-rear direction within a rectangular tube portion 43 b formed on the top of the rail member 43.

  As shown in FIG. 3, a pair of wing parts 24 are formed on the left and right sides of the sliding part 23 formed on the heating power adjusting lever 2. When the fire extinguishing button 3 is pushed to ignite the gas burner, one end 31a of the pushing portion 31 comes into contact with one wing portion 24 and pushes the wing portion 24 in contact with the wing portion 24, thereby turning on the heating power control lever 2. It swings in conjunction with the push operation of the fire extinguishing button 3. When the heating power adjustment lever 2 swings in conjunction with the position where the tip 31a of the other pushing portion 31 contacts the other wing 24, the swinging of the heating power adjustment lever 2 stops. The position at which the oscillation of the heating power adjusting lever 2 stops was set to a position corresponding to the heating power suitable for the ignition of the gas burner.

  When igniting the gas burner, the gas is supplied to the gas burner as described above, and the sparker in the vicinity of the gas burner is operated in a state where the gas is ejected from the flame burner. However, if the amount of gas ejection is too small, Cannot be lit. Conversely, if the amount of gas ejected from the gas burner is too large, it may cause an explosion that generates a loud noise when ignited, or a fire may overflow from the cooking utensils such as a pan set above the gas burner. Occurs. For this reason, when the gas burner is ignited, it is necessary to move the position of the thermal power adjusting lever 2 to a position corresponding to the thermal power suitable for ignition. There are many cases of forgetting.

  Therefore, when the ignition operation is performed by pressing the fire extinguisher button 3 as described above, the heating power adjusting lever 2 is reliably swung in conjunction with the ignition operation. The conventional thermal power adjusting device also has a mechanism for swinging the thermal power adjusting lever 2 in conjunction with the conventional thermal power adjusting device. However, in the conventional apparatus, the engagement pin 42 is moved on the slope of the cam, and the engagement is made. Since the structure is such that the thermal power adjustment lever is swung via the coupling pin 42, a large force is required to swing the thermal power adjustment lever 2 due to friction or the like. Since the thermal power adjusting lever 2 is swung only by pushing it at the tip 31a, the engagement pin 42 moves along the guide surface 22a of the cam hole 22, and the needle valve 41 is positioned corresponding to the thermal power suitable for ignition. Therefore, a large force is not required for swinging the heating power adjusting lever 2. Therefore, pushing of the point-extinguishing button 3 at the time of ignition does not become heavy.

  In addition, this invention is not limited to an above-described form, You may add a various change in the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 1 Thermal power control apparatus 2 Thermal power control lever 3 Point-extinguishing button 4 Main body 5 Guide plate 22 Cam hole 23 Sliding part 24 Wing part 25 Upper board part 26 Front board part 27 Barrier part 31 Push part 31a Tip part 41 Needle valve 42 Engagement Pin 43 Rail member 43a Stopper 43b Square tube part 44 Receiving part 51 Guide hole 52 Retaining part

Claims (2)

A thermal power control lever that swings in the left-right direction and a needle valve that moves forward and backward in conjunction with the swing of the thermal power control lever are provided, and the amount of gas supplied to the gas burner is increased and decreased as the needle valve moves forward and backward. In the heating power adjusting device to be adjusted, a cover that covers at least the upper side and the near side of the needle valve is provided on the heating power adjusting lever, and the needle valve projects in a direction perpendicular to the advancing / retreating direction of the needle valve. The engagement pin is inserted through the upper surface of the cover to form a cam hole for advancing and retracting the needle valve via the engagement pin, and at least the inner surface of the cam hole. And a guide surface on which the engaging pin slides is made of resin, and a frictional force is reduced when the engaging pin slides on the guide surface.   2. The thermal power control apparatus according to claim 1, wherein a barrier is formed on the front side of the cam hole so as to block the fluid entering from the front and prevent the fluid from entering the cam hole.

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