JPH0216736Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a gas burner that is attached to a dental laboratory cabinet and used for heating tools when performing wax-up work on tooth models.

(Prior art) Conventional gas burners installed in dental laboratory cabinets do not have any special structure. For example, as shown in Utility Model Publication No. 10339/1980, a small gas burner is simply installed with a flexible gas pipe. It was nothing more than a connection.

When not in use, such gas burners are pushed into the back of the workbench, and during wax-up work, they are pulled out to the front, the gas stove is opened, and the burner is ignited with a matchstick. Also, after finishing work, close the gas tank and put it back on the workbench at the back of the cabinet after extinguishing the fire.

When working with the above gas burner, you have to open the gas tank and then ignite it with a stick, which is a hassle, and it is left on the workbench both when in use and when not in use, which reduces the effective usable area of the workbench. However, there was a drawback that the workbench could not be kept clean.

(Purpose of the invention) This invention automatically opens the gas opening/closing valve by simply pulling out the supporting means of the gas burner toward you, and when the burner is ignited by pressing the ignition switch after it is set at the drawing-out limit position, the burner can be ignited by pressing the ignition switch. There is no need to ignite the ignition, and when the work is finished, just push it to the back to stop the gas and extinguish the fire.When not in use, it can be placed in the upper part of the back of the workbench, making efficient use of the workbench. To provide a gas burner for mounting on a dental laboratory cabinet whose top can be kept clean at all times.

(Structure of the invention) The gas burner for mounting on a dental laboratory cabinet according to this invention includes a fixed inner cylinder for attaching the supporting means to the cabinet, which is provided with a gas burner, etc. on the free end side.
a rotating outer cylinder that is vertically slidable and rotatable relative to the fixed inner cylinder and connected to the end of the support means; and a gas on-off valve operating switch that is attached to either the inner cylinder or the rotating outer cylinder. , a switch operating piece to be attached to the other cylinder at a position opposite to this, a fixed cylinder of approximately the same diameter provided at the bottom of the rotary outer cylinder, and these mounting parts are attached above the workbench of the cabinet in the front-rear direction of the workbench. and a support member that supports the rotary outer cylinder in an inclined state, and one of the facing surfaces of the rotating outer cylinder and the lower fixed cylinder has a recessed part that engages at the storage limit position of the gas burner, and the other side has a convex part. A notch cut downward is formed in the upper edge of the rotary outer cylinder, and the upright wall of the notch and one end of the switch actuating piece are provided. A gas burner draw-out limit position defining means is provided in the inner and outer cylindrical parts, and the gas opening/closing valve operating switch is brought into contact with the switch operating piece during the gas burner drawing operation to open the gas opening/closing valve, and the gas opening/closing valve is opened during the storage operation. The valve is configured to close.

(Effects of the invention) According to the invention, if the gas burner located at the upper part of the back of the workbench is pulled out toward you around the rotating mounting part, the gas burner will open and close the gas as it rotates toward you and descends downward. The valve is opened and the position is regulated using the drawing limit position as the working point.

If you press the ignition switch, the gas burner will be ignited, so there is no need to pull it out, open the gas stove, and use a matchstick or the like to ignite it, as you did in the past.

When the work is finished, simply pushing it in will move the gas burner part to a high position above the workbench, close the gas opening/closing valve, and engage the uneven parts formed on the opposing surfaces of the rotary outer cylinder and the lower fixed cylinder. It is then set to the storage limit position. Therefore, it is safe because there is no forgetting to close the gas kettle, the entire upper surface of the workbench can be used effectively, and the workbench surface can be kept clean.

Furthermore, by setting the draw-out limit position of the gas burner as the working point, it is possible to always work efficiently in the most convenient working posture.

(Example) Fig. 1 shows a gas burner 1 for dental technology according to the present invention.
The rotary base of this gas burner 1 for dental technicians is normally installed in the cabinet 2 above the workbench 3 so as to be inclined in the front-rear direction to the rear right.

The base of a vacuum tube 4 for technicians is rotatably attached to the upper left corner of the workbench 3, and a suction tube 5
It is constructed so that it can be freely pulled out and stored in the front and rear directions. Further, a hole 6 is formed in the left rear part of the workbench 3 for picking up trash generated during work, and a mounting table 8 for a trash can 7 is provided at the bottom.

As shown in FIG. 2, the gas burner 1 for dental technology is equipped with a gas burner 10, a spark plug 11, and an ignition switch 12 for igniting the gas burner 10 on the free end side of a pipe 9 serving as a support means. is provided with a gas flow rate control valve 14.

and the attachment part 15 of the pipe 9 to the cabinet.
The gas burner is installed in an inclined manner in the front and back direction so that the gas burner is at a high position when stored and at its lowest position when pulled out. a fixed cylinder 17 and an inner cylinder 18; a rotary outer cylinder 19 which has approximately the same diameter as the fixed cylinder 17 and fits onto the upper inner cylinder 18 of the fixed cylinder 17; and a gas opening/closing valve attached to the side surface of the rotary outer cylinder 19. It consists of an operating switch 20 and a switch operating piece 21 provided on the outside of the inner cylinder 18 that operates the operating switch 20.

The base end of the pipe 9 is connected to the rotating outer cylinder 19, and the cord connected to the gas pipe 13, spark plug 11, and ignition switch 12 inserted through the upper opening 18a of the inner cylinder 18 is connected to this pipe. 9 is inserted.

Since the rotatable outer cylinder 19 is simply inserted outside the inner cylinder 18, it can not only rotate but also slide up and down, that is, in the axial direction, and has an edge 19a facing the lower fixed cylinder 17. By forming a concave portion 22 and engaging it with a convex portion 23 provided on the upper opposing edge 17a of the fixed cylinder, a gas burner position holding means is formed which can hold the pipe 9 at a position above the workbench 3 in the storage position. ing.

Further, a notch 24 cut downward is formed at the upper edge of the rotary outer cylinder 19 at the part where the gas on-off valve operating switch 20 is attached, and the inner cylinder at this notch 24 portion 18 Operation switch 20 on the outside
The switch operating piece 2 on which the contact portion 20a acts
1 is installed.

One end 21a of the switch operating piece 21 and one upright wall 24a of the notch 24 constitute means for defining the draw-out limit position of the gas burner 10.

When the gas burner 10 is housed in the upper rear position of the workbench 3, the recess 2 on the lower edge of the rotary outer cylinder 19
2 is engaged with a protrusion 23 of the fixed cylinder 17, but when the pipe 9 is pulled toward you, the engagement is removed and the rotating outer cylinder 19 slides upward by the height of the protrusion 23, The lower opposing edge 19a rotates while slidingly contacting the convex portion 23. Before the gas burner 10 is rotated downward to the draw-out limit position, that is, to the working point P, the contact piece 20a of the gas on-off valve operating switch is moved to the switch operating piece 21.
is pressed to open a gas opening/closing electromagnetic valve (not shown), allowing gas to flow into the burner 10.

When the gas burner 10 reaches the working point P position, the switch actuating end 21a, which serves as the drawing limit position determining means for the gas burner, comes into contact with the upright wall 24a of the notch 24 to prevent further rotation, and the gas burner 10 is held in position near and above the work point P by its own weight.

If you press the ignition switch 12 with your finger in this state, sparks will fly from the ignition plug 11 and the gas burner 10 will
Light it and perform wax-up work.

When the work is finished, simply push the gas burner 10 to the back, and as mentioned above, it will be held above the workbench 3, and there will be no obstructions on the workbench 3, making effective use of the entire surface and keeping it clean at all times. becomes possible.

[Brief explanation of the drawing]

FIG. 1 is a front view of the dental laboratory gas burner of the present invention installed in a cabinet. FIG. 2 is a partially cutaway perspective view of a gas burner for dental technology. FIG. 3 is a perspective view of the part attached to the cabinet. 1... gas burner for dental technology, 2... cabinet, 3... workbench, 9... support means (pipe),
10...Gas burner, 11...Spark plug, 12
...Ignition switch, 15...Mounting portion, 16...Support member, 17...Fixed cylinder, 18...Inner cylinder, 19...
...Rotating outer cylinder, 20...Gas opening/closing valve operating switch, 21...Switch operating piece, 21a...Switch operating piece end, 22...Concave portion, 23...Convex portion.

Claims (1)

[Claims for Utility Model Registration] A drawer storage in which a gas burner, a spark plug, and an ignition switch are provided on the free end side of a support means, and the other end of the support means is rotatably attached above the workbench of a technician cabinet. A flexible gas burner for a dental laboratory, wherein the attachment part of the support means to the cabinet is fixed to a fixed inner cylinder, and the end part of the support means is vertically slidable and rotatable with respect to the fixed inner cylinder. A connected rotary outer cylinder, a gas on-off valve operation switch attached to one of the inner cylinder or the rotary outer cylinder, a switch operating piece attached to the other cylinder at the opposite position, and a lower part of the rotary outer cylinder. It consists of a fixed cylinder of approximately the same diameter provided in the upper part of the cabinet, and a support member that supports these mounting parts above the workbench of the cabinet in an inclined state in the front-rear direction of the workbench, and the rotating outer cylinder and the lower fixed cylinder A concave portion that engages the gas burner at its storage limit position is provided on one of the facing surfaces of the rotary outer cylinder, and a convex portion is provided on the other side to form a position holding means for the gas burner. A notch is formed in the cutout, and the upright wall of the notch and one end of the switch actuating piece provide gas burner draw-out limit position regulating means, and the gas opening/closing valve actuating switch is controlled during the gas burner draw-out operation. A gas burner for installation in a dental laboratory cabinet, which is configured to open a gas opening/closing valve by bringing the switch into contact with the switch operating piece, and to close the gas opening/closing valve during storage operation.