JP2010133662A - Piezo ignition type gas burner with lever lock mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure safety in non-use, and to retain combustion in use, in a piezo ignition type gas burner by relationship of lever lock mechanisms of the same constitution disposed on the front side and back side of a grip and guide grooves formed on an operation lever, and to reduce a weight and to improve easiness in mounting the lever lock mechanisms by forming a burner body into a hollow body with the grip. <P>SOLUTION: This piezo ignition type gas burner is composed of: the burner body integrated with the grip at a lower section; and the operation lever rotatably supported in a longitudinally long opening formed on a front face of the grip and kept into contact with a movable member of a piezo ignition device. The burner body is formed into the hollow body with the grip at the lower section by fitting a pair of right and left halves of the same configuration. The lever lock mechanisms of the operation lever are vertically operably disposed on a front plate and a back plate at both sides of the opening of the grip. Pin grooves of the lock pin are formed on both side faces of the operation lever in a state of being vertically displaced. An opening upper edge of the pin groove at an upper position is formed as a locking edge for retaining the operation lever at a non-operating position. An opening lower section of the pin groove at a lower position is formed as a locking hook for retaining the operation lever in an operating position. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a piezoelectric ignition type gas burner with a lever lock mechanism which is a handy type used in connection with a liquefied gas cylinder and which can perform both a safety lock of a control lever and a combustion holding lock.

  Handy-type gas burners equipped with a piezoelectric ignition device as gas ignition means are easy to use and easy to handle ignition and flame adjustment, and thus are widely used not only for metal processing but also for other industries such as cooking. For this reason, a lever lock mechanism for preventing the danger of ignition due to an inadvertent operation of the operating lever and fixing the operating lever at the valve opening position to maintain the gas combustion state is being adopted.

As a piezoelectric ignition type gas burner equipped with both a safety lock and a valve-opening holding lock, a fire extinguishing device is installed in parallel with the valve operating device in the cover at the front of the grip, and the valve operation of the piezoelectric ignition device and the fire extinguishing device The piston can be pressed by a common ignition lever so that both the piezoelectric ignition operation and the opening / closing operation of the valve operating device by the valve operating piston in the fire extinguishing device can be performed. In some cases, inadvertent operation of the ignition lever during use can be prevented and valve opening can be maintained, and the valve opening can be released by pressing a fire extinguishing button.
JP 2002-89804 A

  In the above-described conventional valve operating piston locking and valve opening holding with the valve operating piston and the holding spring, the position of the valve operating device within the burner body is limited within the grip at the lower part of the burner body. A valve operating device cannot be provided and connected directly to the burner tube at the tip of the body. In addition, the ignition operation by pushing the operating lever is performed directly against the accumulating spring in the piezoelectric ignition device, the valve operating spring and the engaging spring in the valve operating device, etc. Requires finger strength. In addition, when releasing the hold of the valve opening by pressing the fire extinguishing button, the fire extinguishing button is located at the position of the thumb holding the grip.

  In addition, the conventional burner body is made of cast material, and since the screw holes and gas passages of the valve device to be installed in the main body are drilled, machining accuracy is required. Since this is done by screwing in with a seal member such as, there is a manufacturing problem such as requiring labor, and the mounting space for the operation lever of the piezoelectric ignition device is also limited, so the ignition operation is a pressure type by the fingertip In addition, there is a problem that the ignition operation becomes difficult with downsizing.

  An object of the present invention is to provide a lever lock mechanism having the same configuration in which both the safety of the piezoelectric ignition type gas burner when not in use and the combustion retention during use are provided on the front and back plates of the grip, and the front surface of the grip Another object of the present invention is to provide a new piezoelectric ignition type gas burner with a lever lock mechanism which can be easily performed individually in relation to an operation lever which is pivotably attached to the lever.

  Another object of the present invention is to solve the above-mentioned problem of the burner main body by casting. The burner main body is formed into a hollow body by fitting a pair of left and right halves of the same form, and has a weight. To provide a new piezoelectric ignition type gas burner with a lever lock mechanism that is easy to attach to the grip of the operation lever and lever lock mechanism and that can be easily ignited by turning the operation lever. is there.

  This invention according to the above object is formed on the front face of the grip, the burner body integrally formed with the lower grip, the crater unit connected to the tip of the burner body, the valve unit in the burner body and the piezoelectric ignition device in the grip. It consists of an operating lever that rotatably supports the upper end portion in a vertically long opening and abuts against the movable member of the piezoelectric ignition device, and has a lever locking mechanism with locking pins for the operating lever on both sides of the opening of the grip. The front and back plates are provided so that they can be moved up and down. The pin groove of the lock pin is formed on both sides of the operation lever with the opening position shifted up and down, and the upper edge of the upper pin groove is not attached to the operation lever. The lower edge of the lower pin groove is formed as a locking hook that restrains the operating lever at the operating position on the locking edge that is restrained at the operating position.

  The burner body according to the present invention comprises a hollow body formed with a lower grip by fitting a pair of left and right halves of the same form, and the lever lock mechanism of the front plate and the back plate of the grip has the same structure, A vertically long guide groove recessed in the inner surface of the plate body, a rectangular lock plate integrally fitted with the lock pin and movably fitted in the guide groove, and a guide hole formed by a long hole formed in the grip plate body in the center of the guide groove; The slide plate on the outer surface of the grip plate is connected to the lock plate by a screw screw by fitting a protrusion on the inner surface into the guide hole, and is attached to the grip plate with the lock pin at the same height position. It is that.

  The lock plate has a longitudinal slit formed on one side of the surface, and a protrusion provided on the side surface of the plate on the slit side, the deflection of the side surface of the one side by the slit, the protrusion on the side surface of the plate, and the guide With the depressions at the top and bottom of the side surface of the groove, the lock plate can be slid and locked by click stop by the up and down movement of the slide button.

  Further, the operation lever is a vertically long one composed of a front surface that is a finger hook in the upper opening of the grip and both lateral surfaces having a width extending to the lock pin of the lock plate, and the lock pin is disposed on both sides of the operation lever. The pin groove is located below the pin position on the left side and the pin position on the right side, and the position is shifted up and down to form a notch obliquely downward at the same angle from the rear edge of the lever to the plate surface. The upper edge is formed as a locking edge of the lock pin, and the lower opening portion of the pin groove on the right side surface is formed as a locking hook of the lock pin by bending the groove downward.

  In the above configuration, the position of the lock pin on both sides of the grip and the position of the left and right pin grooves of the control lever are changed by pushing down the lock pin with the lever lock mechanism to release the safety lock when not in use, ignition operation and combustion The holding lock can be released, and the combustion holding lock can be released and the safety lock can be released by pushing up the lock pin, so the combustion holding lock by operating the lever lock mechanism on the face plate side of the grip can be Even if the thumb is on the slide button at the time of combustion holding, the holding lock is not released unless the slide button is pushed up, so that interruption of combustion during use is prevented.

  In addition, the burner body is formed into a hollow body together with the lower grip by fitting a pair of left and right halves of the same form, so it is lightweight, and it is possible to reduce manufacturing costs because secondary processing is not required for the burner body. Become. In addition, the lever lock mechanism can be attached to the grip forming part of both halves before the burner body is completed, and the lock plate is fitted into the guide groove on the inner surface of the half body, and the grip is attached to the lock plate. Since the slide button on the outer surface of the plate body can be connected to the guide hole drilled in the plate body by fitting the protrusion on the inner surface with a screw screw, the lever lock mechanism is provided inside and outside through the plate body of the grip However, it does not require a lot of work to install.

  In addition, the operation lever can be mounted on the grip only by placing it at each preset position together with the piezoelectric ignition device and the valve unit. It will be a thing. The lower grip, which is integrated with the burner body, is also hollow, so it is easy to turn the operation lever on the front of the grip into and out of the grip, and the finger rest surface is also long so that the ignition by turning Operations can be performed lightly with one touch.

  Also, by simply locking the lock pins on both sides of the grip to the upper edge of the pin groove opening on the left side of the operating lever and the locking hook on the lower side of the right side by the same operation, the safety lock and combustion holding of the operating lever are achieved. Because it can be locked, there is no need for multiple functions of the lever lock mechanism on both sides of the grip, and the same structure can be used, so there is no difference between the front side and the back side of the grip. Since confirmation is not necessary, productivity is also improved.

  Furthermore, when the gas burner is used, the ignition operation of the piezoelectric ignition device is performed by pressing the movable member with an operating lever that pivots around a support pin on the grip side. As a result, the finger force is reduced by the action of the lever, and the spring member for holding the operating lever is not necessary, so that even when the gas burner is downsized, ignition by drawing the operating lever can be easily performed. .

  In the figure, 1 is a burner body made of an aluminum alloy having a lower portion formed on a grip 11, and a pair of left and right halves 10a, 10b of the same form cast by die casting are fitted to each other, and required portions are fastened with screw screws. The small body fits in the palm formed in the hollow body, and the main body has a plurality of partitions for holding the members formed at the same location inside the halves.

  The front end 12 and the rear end 13 of the burner body 1 are cylindrical, and the front end 12 is formed in a screw cylinder having a threaded outer peripheral surface. The crater unit 2 has a rear end at the front end. And are integrally connected by a ring screw 3 fitted around the outer periphery of the rear end.

  Inside the burner body 1, the valve unit 4 is placed horizontally in a guide groove at the center of a pair of front and rear partitions 10 a ′ and 10 b ′ integrally formed inside the half bodies 10 a and 10 b. The valve unit 4 has a normal structure having a valve opening / closing nozzle 42 at the front part of the valve cylinder 41 and a control knob 43 for a flow rate adjusting valve in the cylinder at the rear part. It is located concentrically in the center of the interior, and the operation knob 43 is disposed in the rear end portion 13 so that the outer end of the knob protrudes to the outside. A connecting pipe 21 at the rear end is inserted. The valve opening / closing nozzle 42 is vertically provided with an opening / closing plate 42a that rotates about a support shaft.

  The front surface of the grip 11 is bent inward, and the in-plane opening is vertically long. In the grip, a piezoelectric igniter 5 having a normal structure is disposed obliquely toward the opening with the movable member 51 facing downward. In addition, an operating lever 6 is projected in advance in the halves 10a and 10b in the opening, and the upper end portions are supported by a pair of support pins 60 and 60 projecting from the inner surfaces of the front plate 11a and the rear plate 11b of the grip 11. The lock mechanism 7 or 8 of the operation lever 6 is provided so as to be rotatable inside or outside the opening, and the lock pin is slanted vertically along the opening edges of both the front plate 11a and the back plate 11b of the grip 11. The height positions of 71 and 81 are provided in the same manner. A connecting member 9 of a liquefied gas cylinder having a normal structure communicating with the valve unit 4 by a pipe line is fitted to the bottom of the grip.

  The lever lock mechanisms 7 and 8 have the same structure. The lever lock mechanism 7 is provided on the back plate 11b on the grip side of the finger holding the grip 11, and the lever lock mechanism 8 is provided on the front plate 11a on the thumb side. Is provided.

  As shown in FIGS. 2 and 3, the lever lock mechanisms 7 and 8 are recessed in advance in the half bodies 10a and 10b, and are obliquely inclined vertically on the inner surfaces of the front plate 11a of the grip 11 and the rear plate 11b. The rectangular guide grooves 72 and 82, the rectangular lock plates 73 and 83 which are integrally fitted with the lock pins 71 and 81 and are movably fitted to the guide grooves 72 and 82, and the center of the guide grooves 72 and 82, respectively. Guide holes 74 and 84 by long holes drilled in the plate body in the longitudinal direction, and slides on the outer surface of the plate body connected to the lock plates 73 and 83 by screw screws by fitting protrusions on the inner surface to the guide holes 74 and 84. Buttons 75 and 85.

  A slit is formed in the longitudinal direction on one in-plane side of the lock plates 73 and 83, and a protrusion is provided on the side surface of the plate on the slit side. The sliding and locking of the lock plates 73 and 83 by the click stop is caused by the bending of the plate side surface on one side by the slits 73 ′ and 83 ′ and the protrusions on the side surface of the plate and the depressions in the upper and lower portions of the guide groove side surface. The slide buttons 75 and 85 can be individually operated by moving up and down.

  The operation lever 6 includes a scissors-curved front plate 61 that serves as a finger hook, lateral side plates 62 and 63 having a length that the lever rear edge extends to the lock pins 71 and 81 of the lock plates 73 and 83, and a bottom plate 64. Is formed of a synthetic resin in which the bottom cross-section is a concave shape, the bottom edge of the bottom plate protrudes downward to form a locking edge 64 ′, and the ignition actuator 65 projects from the inner surface of the front plate 61. . Although the illustrated operation lever 6 is a plate, it may be formed of a vertically long block.

  The operation lever 6 is installed inside and outside the opening on the front face of the grip, with the left side plate 62 viewed from the front plate 61 on the back plate side of the grip 11 and the right side plate 63 on the front plate side. , 63 are provided so as to be rotatable about the support pins 60, 60 fitted to the upper end portions on the front side.

  As shown in FIG. 3, pin grooves 62 a and 63 a of the lock pins 71 and 81 are formed on the left and right side plates 62 and 63 of the operation lever 6 below the pin position of the lock pin 81 on the left side plate 62. In the right side plate 63, the positions of the lock pins 71 are shifted upward and downward to form a notch obliquely downward at the same angle from the rear edge of the lever to the plate surface. Further, the upper edge of the opening of the pin groove 62a of the left side plate 62 is recessedly formed in the engaging edge of the lock pin 71, and the lower portion of the opening of the pin groove 63a of the right side plate 63 is bent downward. The locking hook 63a 'is formed.

  In the burner body 1 by fitting the halves 10a and 10b, the lever lock mechanisms 7 and 8 are attached to the portions of the guide holes 74 and 84 formed in both halves, and either one of the halves 10a and 10b is attached. When the operating lever 6 is placed in the grip opening portion, the upper end portion of the operating lever 6 is fitted to the support pin 60, the halves are fitted together so as to sandwich the operating lever 6 and fastened with screw screws, Since the operation lever 6 is positioned by the support pin 60 and the openings of the pin grooves 62a and 63a are located at the lock pins 71 and 81 of the lever lock mechanisms 7 and 8, the pin groove and the lock pin need not be aligned.

  The embodiment shown in the figure is a right-handed gas burner. However, as a left-handed gas burner, both lever lock mechanisms 7 and 8 have the same structure and the same height position of the lock pins 71 and 81. Contrary to the operation lever 6 described above, this can be dealt with by mounting an operation lever in which a pin groove 62a for safety locking is formed on the right side plate and a pin groove 63a for holding combustion is formed on the left side plate.

  The operating lever 6 in the opening of the grip 11 is brought into contact with the ignition member 65 and the movable member 51 of the piezoelectric ignition device 5, and the latching edge 64 ′ is held by the accumulating spring built in the piezoelectric ignition device 5. It has been oppressed outward until it touches. Thereby, as shown in FIG. 1, the upper part of the lever rear edge is in contact with the lower end of the opening / closing plate 42a, and the lock pin 71 of the lever lock mechanism 7 is positioned on the upper edge of the pin groove 62a of the left side plate 62, The lock pin 81 of the lever lock mechanism 8 is positioned in the opening of the pin groove 63 a of the right side plate 63.

  In a state where the lock pin 71 of the lever lock mechanism 7 is positioned at the engaging edge of the upper edge of the opening of the pin groove 62a, the lock pin 81 of the lever lock mechanism 8 is within the opening of the pin groove 63a due to the vertical difference of the position of the pin groove 63a. Even when the lever is in the position, the lock pin 71 becomes an obstacle in the lever lock mechanism 7 and the operation lever 6 cannot be pulled into the grip, and the operation lever 6 is constrained to that position. Therefore, the lever lock mechanism 7 of the back plate 11a functions as a safety lock that restrains the operation lever 6 in the inoperative position.

  The safety lock can be easily released by pushing down the slide button 75 on the outer surface of the back plate 11a to move the lock plate 73 downward, and moving the lock pin 71 from the upper edge of the opening to the pin groove 62a. When the operation lever 6 is pulled into the grip while the lock pin 71 is positioned at the opening of the pin groove 62a, as shown in FIG. 4, the lock pin 71 is moved to the pin groove 62a as the operation lever 6 rotates inward. I started to go in. Since the lock pin 81 also enters the pin groove 63a, both the valve opening operation of the opening / closing plate 42a by the operation lever 6 and the ignition operation of the piezoelectric ignition device 5 can be performed. Ignition combustion occurs.

  When the finger is released from the operation lever 6 and the drawing stop is stopped, the operation lever 6 is automatically pushed back by the restoring force of the accumulating spring in the piezoelectric ignition device, and the lock pin 71 is positioned outside the opening of the pin groove 62a. It becomes like this. Accordingly, the pressing force on the opening / closing plate 42a by the upper portion of the lever rear edge is removed, the valve opening / closing nozzle 42 is returned to the original closed state by the spring in the unit, and the supply of gas is stopped by closing the valve unit 4. The combustion stops. Further, when the slide button 75 is pushed up after the operation lever 6 is automatically returned, the lock pin 71 is positioned again at the upper edge of the opening to enter a locked state in which the operation lever 6 is prevented from being drawn.

  When holding the gas combustion, it is not necessary to keep pulling the operation lever 6 with a finger, and the slide button 85 of the lever lock mechanism 8 is pushed down while the operation lever 6 is pulled down to move the lock plate 83 downward. Just do it. Due to this downward movement, the lock pin 81 of the pin groove 63a is pushed into the bent groove so that it is positioned inside the locking hook 63a 'at the lower part of the opening, and the operating lever 6 is returned to the original position by the accumulating spring. When returning, the locking hook 63 a ′ comes into contact with the lock pin 81.

  As a result, even if the finger is released from the operating lever 6, the operating lever 6 is restrained by the locking hook 63a 'and is restrained to the drawing throttle position, the gas supply by the valve opening is maintained, and the combustion in the crater remains as it is. It will be retained. Further, the combustion can be stopped only by pushing up the slide button 85, returning the lock pin 81 into the pin groove on the engagement hook 63a 'and removing it from the engagement hook 63a'. Therefore, the lever lock mechanism 8 of the surface plate 11b functions as a combustion holding lock that restrains the operation lever 6 at the operating position.

  Further, the ignition operation of the piezoelectric ignition device 5 when the gas burner is used is performed by pressing the movable member 51 by the operation lever 6 that pivots around the support pins 60 and 60 of the grip 11 by the drawing and drawing operation. Even if the accumulator spring in the piezoelectric ignition device and the valve closing spring in the valve unit become the resistance of the lever drawing throttle, the pressing force can be reduced by the action of the lever. It is not necessary and ignition can be performed smoothly.

It is a vertical front view of the piezoelectric ignition type gas burner which has a lever lock mechanism concerning this invention. It is a principal part vertical back view of this invention. It is a half body side view of the burner main body which shows the lever lock mechanism by the side of the surface board of a grip, and the lever lock mechanism by the side of a back surface. It is a partial explanatory view showing the operating state of the lever lock mechanism on the surface plate side of the grip. It is a partial explanatory view showing the operating state of the lever lock mechanism on the back plate side of the grip. It is a disassembled perspective view of a burner main body.

Explanation of symbols

1 Burner body 2 Tinder unit 4 Valve unit 5 Piezoelectric ignition device 6 Operation lever 7 Lever lock mechanism (for safety lock)
8 Lever lock mechanism (for combustion retention lock)
10a, 10b Burner body half 11 Grip 60 Support pin 61 Front plate 62 of operation lever Left side plate 62a, 63a Pin groove 63 Right side plate 63a 'Locking hook 71, 81 Lock pin 72, 82 Guide groove 73, 83 Lock plate 74, 84 Guide hole 75, 85 Slide button

Claims (4)

Burner body integrally formed with the lower grip, crater unit connected to the tip of the burner body, valve unit in the burner body, piezoelectric ignition device in the grip, and upper end portion in a vertically long opening formed in the front face of the grip Comprising an operation lever that is rotatably supported and abutted against a movable member of the piezoelectric ignition device,
A lever lock mechanism with a lock pin for the operation lever is provided on the front and back plates on both sides of the opening of the grip so that it can be moved up and down, and the pin groove of the lock pin is moved up and down on both sides of the operation lever. Formed by shifting, the upper edge of the upper pin groove opening is the locking edge that restrains the operating lever to the inoperative position, and the lower opening of the lower pin groove is the locking hook that restrains the operating lever to the operating position A piezoelectric ignition type gas burner with a lever lock mechanism.   The burner body is a hollow body formed with a lower grip by fitting a pair of left and right halves of the same form, and the lever locking mechanism of the front plate and the back plate of the grip has the same structure, and the inner surface of the plate body A vertically long guide groove recessed in the shaft, a rectangular lock plate integrally fitted with the lock pin and movably fitted in the guide groove, a guide hole formed by a long hole formed in the grip plate at the center of the guide groove, and the guide It is composed of a slide button on the outer surface of the grip plate body, which is fitted with a projection on the inner surface in the hole and connected to the lock plate with a screw screw, and is attached to the grip plate body with the lock pin at the same height position. The piezoelectric ignition type gas burner with a lever lock mechanism according to claim 1.   The lock plate has a longitudinal slit formed on one side of the surface, and a protrusion provided on the side surface of the plate on the slit side, bending of the side surface of the plate by the slit, a protrusion on the side surface of the plate, and the guide groove 3. The lever according to claim 2, wherein the lock plate can be slid and locked by a click stop of the slide plate by an up-and-down movement operation of the lock plate by two depressions at the upper and lower sides of the side face. Piezoelectric ignition type gas burner with locking mechanism.   The operating lever is a vertically long one consisting of a front surface to be a finger hook and both lateral sides having a length extending to the lock pin of the lock plate, and the pin groove of the lock pin is located on both side surfaces on the left side. Downwardly, the pin position on the right side is shifted up and down to form a notch diagonally downward at the same angle from the rear edge of the lever to the plate surface, and the upper edge of the pin groove opening on the left side is locked to the lock pin 2. The piezoelectric ignition type gas burner with a lever lock mechanism according to claim 1, wherein an opening lower portion of the pin groove on the right side surface is formed on the edge as a locking hook of the lock pin by bending the groove downward.

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