JP5493353B2 - Oil combustor core lifting device - Google Patents

Description

  The present invention relates to an oil combustor core lifting device including a lever-type operation section.

In the lever-type core lifting and lowering device, when the core up / down knob is pushed down and the operation lever is rotated, the drive plate is rotated via the locking portion. When rotating in the centering direction, the driving plate rotates together through the locking portion, and the driving plate engages with the stopper at the centering position to hold the rotational force of the return spring. When the engagement between the drive plate and the stopper is released, the drive plate is rotated in the core lowering direction by the force of the return spring, and the drive plate rotates the operating lever in the core lowering direction of the core vertical axis through the locking portion. It moves to lower the core. The operation lever is provided so that the vertical axis of the core can be rotated independently while the drive plate and the stopper are engaged, and the combustion amount is adjusted and the fire is manually extinguished by changing the height of the core. (See Patent Document 1).
JP-A-7-293825

  The conventional core lifting device has a general mounting method in which an operation lever is arranged between the base and the drive plate, and the operation lever and the drive plate are rotatably attached to the base by caulking. Because the parts are made of metal, when the operation lever and the drive plate rotate, the metal touches the contact surface of the operation lever, base, and drive plate, creating friction. In addition, it is necessary to apply grease to the contact surface so that the drive plate can rotate smoothly.

  The grease application work is done after assembling the core lifting device, but after caulking, the gap between the operation lever and the base or drive plate is very narrow, and grease must be applied in a narrow gap. It is a cumbersome and time-consuming work.

  In addition, if the oil combustor is used for a long period of time, the effect of the grease will be diminished due to the deterioration of the grease applied to the contact surface, and friction will easily occur on the contact surface when the operating lever and drive plate are rotated. In addition, the contact surface is worn by friction and the core lifting device may cause malfunction.

SUMMARY OF THE INVENTION The present invention solves the above-described problem. A core vertical shaft 1 for performing a core vertical operation, an operation lever 2 having the core vertical shaft 1 as a rotation center, and a core vertical shaft 1 loosely fitted to the core vertical shaft 1 are provided. Is provided with a drive plate 4 having a return spring 3 centered on the rotation center. The drive plate 4 is provided with a locking portion 5 that comes into contact with the operation lever 2. In the oil combustor provided with a stopper 6 that rotates the drive plate 4 through the center and engages with the drive plate 4 at the center raising position and holds the rotational force of the drive plate 4 by the return spring 3. The operation lever 2 is disposed between the base 7 and the drive plate 4, and a thin resin sheet 8 configured to be mounted between the operation lever 2 and the contact surface of the base 7 is disposed and operated. A resin spacer 9 having a predetermined thickness is provided between the contact surface of the lever 2 and the drive plate 4. Arrangement, and is characterized in that attached to the seat 8 and the operating lever 2 and the spacer 9 base 7 and the drive plate narrow wear to the drive plate 4 to the base 7 at 4.

  An engagement portion 10 is provided between the drive plate 4 and the base 7, and the drive plate 4 is attached to the base 7 by the engagement portion 10 with the seat 8, the operation lever 2, and the spacer 9 being tightly attached. The spacer 9 is provided with an elastic body 9a, and the elastic body 9a presses the operating lever 2 tightly attached to the base 7 and the driving plate 4 against the base 7 so that the contact surface between the operating lever 2 and the base 7 is the sheet 8. The operation lever 2 and the drive plate 4 are in close contact with each other with the spacer 9 interposed therebetween, and the operation lever 2 and the drive plate 4 can be securely attached to the base 7 without tilting.

  The spacer 9 is provided with a cylindrical rotating shaft 11, the seat 8, the operating lever 2, and the drive plate 4 are fitted on the outer periphery of the rotating shaft 11, and the rotating shaft 11 is provided on the base 7. By fitting in the hole 7a, the operation lever 2 and the drive plate 4 are rotated about the rotation shaft 10, so that the operation lever 2 and the drive plate 4 can be smoothly rotated.

  In the core lifting device of the present invention, a thin resin sheet 8, an operation lever 2, and a resin spacer 9 having a predetermined thickness are arranged between the base 7 and the drive plate 4, and the sheet 8, the operating lever 2, and the spacer 9 are closely attached between the base 7 and the drive plate 4, and the drive plate 4 is attached to the base 7 to constitute a core lifting device. In this configuration, the resin sheet 8 is positioned between the contact surfaces of the operation lever 2 and the base 7, and the resin spacer 9 is positioned between the contact surfaces of the operation lever 2 and the drive plate 4. The metal operation lever 2, the base 7, and the drive plate 4 do not come into direct contact with each other, but come into contact with the resin sheet 8 or the spacer 9. For this reason, it is possible to suppress the occurrence of friction due to the rotation of the operation lever 2 and the drive plate 4 during the core up / down operation, and it is not necessary to apply grease to the contact surface, and no grease application work is required. Workability can be improved.

  Further, the resin sheet 8 and the spacer 9 are not deteriorated as in the conventional grease, and even when the oil combustor is used for a long time, the contact surfaces of the operation lever 2, the base 7 and the drive plate 4 are not affected. Wear can be reliably prevented, and problems such as deterioration of the operability and malfunction of the core lifting device are no longer generated.

  Further, since the seat 8 can be formed to be very thin, and the seat 8 can be easily attached even in a structure in which the gap between the operation lever 2 and the base 7 is narrow, compared with a conventional core lifting device. Large structural changes are possible without the need.

The spacer 9 disposed between the operation lever 2 and the drive plate 4 is provided with an elastic body 9 a, and the seat 8, the operation lever 2, and the spacer 9 are closely attached to the base 7 and driven by the engaging portion 10. When the plate 4 is attached to the base 7, the operation lever 2 is pressed against the base 7 by the action of the elastic body 9 a, so that the sheet 8 is in close contact with the contact surface between the operation lever 2 and the base 7, and the spacer 9 is The operation lever 2 and the drive plate 4 are brought into close contact with each other, and the operation lever 2 and the drive plate 4 are prevented from being tilted and can be securely attached to the base 7. For this reason, the resistance due to friction on the contact surface during the core up / down operation is reliably suppressed, and the operation lever 2 and the drive plate 4 can be smoothly rotated.
This configuration eliminates the need for conventional caulking and grease application operations, and thus can be expected to improve productivity.

Further, a cylindrical rotating shaft 11 is formed in the spacer 9, and the rotating shaft 11 is provided in the base 7 in a state where the seat 8, the operation lever 2, and the drive plate 4 are fitted to the rotating shaft 11. And the drive plate 4 is engaged with the base 7, so that the seat 8, the operation lever 2, the spacer 9, and the drive plate 4 can be attached to the base 7 in a combined state. It became easy to assemble without falling apart, and improved productivity could be expected.
Further, since the core vertical shaft 1 is fitted inside the rotation shaft 11 of the spacer 9, the core vertical shaft 1 is not in direct contact with the inner edge of the through hole 7 a of the base 7 or the drive plate 4. The resistance due to friction is reduced at the time of rotation, so that wear of the contact surface can be prevented, and the core vertical shaft 1 can be rotated smoothly.

  The present invention will be described with reference to the embodiments shown in the drawings. Reference numeral 12 denotes an oil tank of an oil combustor, 13 denotes a core housing cylinder standing from the oil tank 12, and 14 denotes a combustion cylinder placed on the core housing cylinder 13. The core is mounted in the core housing cylinder 13 so as to be movable up and down.

  7 is a base of the core lifting device, 7a is a through hole provided in the base 7, 1 is a core vertical shaft for performing a core vertical operation inserted into the oil tank 12 from the through hole 7a of the base 7, and 2 is a core vertical shaft 1. An operation lever 2a having a rotation center is a core up / down knob that drives the end of the operation lever 2. By operating the core up / down knob 2a, the core up / down shaft 1 is rotated to move the core up / down. Reference numeral 4 denotes a driving plate loosely fitted to the core vertical shaft 1, and 5 denotes a locking portion provided on the driving plate 4. The operation lever 2 and the driving plate 4 are brought into contact with each other by the locking portion 5 during the core vertical operation. Rotate.

  4a is an engagement groove provided in the drive plate 4, 6 is a stopper that engages with the engagement groove 4a of the drive plate 4, 3 is a return spring that drives the drive plate 4 in the direction of lowering the core, and the operation lever 2 is When it rotates in the raising direction, the drive plate 4 rotates together while extending the return spring 3, and when the engagement groove 4 a and the stopper 6 are engaged, the return spring 3 accumulates force.

  15 is a seismic weight mounted on the base 7, 16 is a seismic lever connecting the stopper 6 and the seismic weight 15, 16a is a support shaft of the seismic lever 16, and the seismic weight 15 vibrates. When it detects and falls, the seismic lever 16 rotates about the support shaft 16 a, the stopper 6 is disengaged from the engaging groove 4 a, and the drive plate 4 rotates in the core lowering direction by the force of the return spring 3. Since the drive plate 4 and the operation lever 2 are in contact with each other at the engaging portion 5, the operation lever 2 rotates in the core lowering direction together with the drive plate 4, and the core vertical shaft 1 rotates to the fire extinguishing position. The combustor is extinguished.

  Further, the operation lever 2 can move the core vertical shaft 1 independently from the engaging portion 5 of the drive plate 4 while the engagement groove 4a of the drive plate 4 is engaged with the stopper 6. In addition, the control lever 2 can be operated to adjust the amount of fuel and to perform a fire extinguishing operation.

  By the way, the conventional core raising / lowering device generally has the operation lever 2 and the drive plate 4 attached to the base 7 by caulking, and the contact surfaces of the metal operation lever 2, the drive plate 4 and the base 7 are coated with grease. However, if the oil combustor is used for a long period of time, foreign substances such as metal powder may be mixed with grease, and the grease may be lost. When friction is generated and the use is continued as it is, the contact surface is worn and resistance increases, which may cause malfunction.

  The present invention solves the above-mentioned problems. Reference numeral 8 denotes a thin resin sheet attached between the operation lever 2 and the contact surface of the base 7, and 9 denotes a predetermined attachment attached between the operation lever 2 and the drive plate 4. A resin spacer 10 having a thickness is an engaging portion provided between the drive plate 4 and the base 7, and a thin sheet 8, the operating lever 2, and the spacer 9 are provided between the base 7 and the drive plate 4. When the drive plate 4 and the base 7 are engaged by the engaging portion 10 and the drive plate 4 is attached to the base 7, the seat 8, the operation lever 2, and the spacer 9 are interposed between the drive plate 4 and the base 7. It is pinched.

  In this configuration, the thin resin sheet 8 is positioned between the contact surfaces of the operation lever 2 and the base 7, so that the metal operation lever 2 and the base 7 are not in direct contact with each other. The spacer 9 made of resin is positioned between the contact surfaces of the drive plate 4 and the drive plate 4 so that the metal operation lever 2 and the drive plate 4 are not in direct contact with each other. All of the contact surfaces have a structure in which the metal and the resin are in contact with each other. For this reason, the friction generated on the contact surface becomes very small, and when the operation lever 2 and the drive plate 4 are rotated, resistance due to friction and wear on the contact surface can be suppressed. It is no longer necessary to apply grease to the contact surface between the drive plate 4 and the drive plate 4, and the troublesome application of grease can be eliminated, so that the workability at the time of assembling the core lifting device can be improved.

  Further, since the sheet 8 disposed between the operation lever 2 and the base 7 instead of the grease is composed of a very thin sheet, the sheet 8 is disposed even in a structure in which the gap between the contact surfaces of the operation lever 2 and the base 7 is narrow. This can be easily realized without changing the structure of the conventional core lifting device.

  Further, in the conventional core lifting device, there is a possibility that the metal powder is mixed with the grease and deteriorates or the grease is lost when the service period is long. However, the resin-made sheet 8 and the spacer 9 of the present invention have no grease. Therefore, even if the usage period is long, friction is not generated on the contact surfaces of the operation lever 2, the base 7 and the drive plate 4, and the wear of the contact surfaces is surely prevented. It is possible to prevent the deterioration of the operability and malfunction of the core lifting device even when the oil combustor is used for a long period of time.

  In the embodiment of the present invention, 4b is an L-shaped engagement piece provided in the drive plate 4, 7b is an engagement hole provided in the base 7, and is engaged by the engagement piece 4b and the engagement hole 7b. Part 10 is configured. One end of the engagement hole 7b is formed wide so that the tip of the engagement piece 4b can be inserted, and the seat 8, the operation lever 2 and the spacer 9 are arranged between the base 7 and the drive plate 4. Then, the engagement piece 4b of the drive plate 4 is inserted from the wide portion of the engagement hole 7b of the base 7, and the drive plate 4 is rotated to move the engagement piece 4b to the inner end on the other side of the engagement hole 7b. Thereafter, the operation lever 2 is attached to the core up / down knob 2a, and the return spring 3 is attached to the drive plate 4 and the base 7. At this time, the engagement lever 4b of the drive plate 4 and the engagement hole 7b of the base 7 are set so as not to be disengaged in the rotation range of the operation lever 2.

  9a is an elastic body formed on the contact surface of the spacer 9 with the operation lever 2. When the drive plate 4 is attached to the base 7, the engaging piece 4b of the drive plate 4 is pressed while pressing the elastic body 9a of the spacer 9. The engaging hole 7b of the base 7 is fitted, and a force that spreads the driving plate 4 and the base 7 by the elastic body 9a of the spacer 9 acts, so that the engaging piece 4b of the driving plate 4 and the base 7 are engaged. The hole 7b is securely fitted and does not easily come off.

  Further, the elastic body 9 a of the spacer 9 exerts a force for pressing the operating lever 2 toward the base 7, the sheet 8 comes into close contact with the contact surface between the operating lever 2 and the base 7, and the spacer 9 contacts the operating lever 2 and the drive plate 4. The operation lever 2 and the drive plate 4 are not attached with an inclination while being in close contact with the surface, and a uniform force is applied to the entire contact surface, so that the core vertical shaft 1 can rotate smoothly and the core vertical shaft 1 The friction on the contact surface was reduced during rotation, and the occurrence of wear due to friction could be prevented.

Reference numeral 11 denotes a cylindrical rotating shaft formed on the spacer 9. The rotating shaft 11 is formed so as to protrude on both surfaces of the spacer 9, and is driven outside the rotating shaft 11 formed on the drive plate 4 side. The plate 4 is fitted, the operating lever 2 and the seat 8 are fitted to the outside of the rotating shaft 11 formed on the base 7 side, and the tip of the rotating shaft 11 on the base 7 side is in the through hole 7 a of the base 7. It is mated.
In this configuration, since the operation lever 2, the base 8, and the drive plate 4 can be attached to the base 7 in a state in which the operation lever 2, the base 8, and the drive plate 4 are combined in advance with the rotation shaft 11 of the spacer 9, the drive plate 4 is attached to the base 7. Sometimes the parts do not fall apart and can be easily assembled.

Reference numeral 17 denotes a connecting member for connecting the core vertical shaft 1 and the operating lever 2. When the rotary shaft 11 is provided on the spacer 9, the core vertical shaft 1 is fitted inside the rotary shaft 11, so that the core vertical shaft 1 The operating lever 2 cannot be directly attached, but the operating lever 2 can rotate the core vertical shaft 1 via the connecting member 17.
The core vertical shaft 1 is fitted inside the rotary shaft 11 so that the core vertical shaft 1 is not in direct contact with the through hole 7a of the base 7 or the drive plate 4, and the core vertical shaft 1 is fitted. Since the rotary shaft 11 is made of the same resin as the spacer 9, the friction generated between the core vertical shaft 1 and the rotary shaft 11 can be reduced, and the resistance due to friction becomes small when the core vertical shaft 1 rotates, and the core vertical The shaft 1 can be rotated smoothly and wear due to friction can be prevented.

It is a principal part front view of the core lifting apparatus which shows the Example of this invention. It is principal part sectional drawing of the oil combustor provided with the core raising / lowering apparatus of this invention. It is principal part sectional drawing of the core raising / lowering apparatus which shows the Example of this invention. It is a principal part front view of the oil combustor provided with the core raising / lowering apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Core vertical axis 2 Operation lever 3 Return spring 4 Drive plate 5 Locking part 6 Stopper 7 Base 7a Through-hole 8 Sheet 9 Spacer 9a Elastic body 10 Engagement part 11 Rotating shaft

Claims (3)

The core vertical axis (1) for performing the core vertical operation, the operation lever (2) with the core vertical axis (1) as the center of rotation, and the core vertical axis (1) are loosely fitted to rotate the core vertical axis (1) A drive plate (4) having a return spring (3) as a center is provided, and the drive plate (4) is provided with a locking portion (5) that comes into contact with the operation lever (2). The lever (2) rotates the drive plate (4) via the locking portion (5) and engages with the drive plate (4) at the center-up position to drive the drive plate (4) by the return spring (3). In the oil combustor provided with the stopper (6) for holding the rotational force of
The operation lever (2) is disposed between the base (7) of the core lifting device and the drive plate (4), and
A thin resin sheet (8) configured so as to be mounted between the contact surfaces of the operation lever (2) and the base (7) is disposed,
A resin spacer (9) having a predetermined thickness is disposed between the contact surfaces of the operation lever (2) and the drive plate (4), and the sheet (8), the operation lever (2) and the spacer are disposed. An oil combustor core lifting device characterized in that (9) is closely attached to a base (7) and a drive plate (4) and the drive plate (4) is attached to the base (7). An engagement portion (10) is provided between the drive plate (4) and the base (7), and the drive plate (4) tightly seats the seat (8), the operation lever (2), and the spacer (9). And attached to the base (7) by the engaging portion (10),
The spacer (9) is provided with an elastic body (9a), and the elastic body (9a) presses the operating lever (2) tightly attached between the base (7) and the drive plate (4) against the base (7). The core raising / lowering device of an oil combustor according to claim 1, characterized in that:   The spacer (9) is provided with a cylindrical rotating shaft (11), and the seat (8), the operating lever (2), and the drive plate (4) are fitted to the outer periphery of the rotating shaft (11) and rotated. 3. The oil combustor core lifting device according to claim 1, wherein the shaft (11) is fitted into a through hole (7 a) provided in the base (7).

Images