JPS636620Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention provides a mounting structure for a spark plug for a gas burner,
More specifically, the ignition is used to ignite a pilot burner used as an ignition source for a gas burner used in a gas range, or to ignite a pilot flame in the ignition chamber of a main burner equipped with an ignition chamber. This relates to a plug mounting structure.

[Prior art]

As a mounting structure for this type of spark plug, a structure previously disclosed by the present applicant in Utility Model Application No. 117196/1983 has been provided. In this structure, as shown in FIGS. 1a and 1b, the spark plug 2 is housed in a notch 5 provided at the front edge of the mounting plate 3, which is fixed at a fixed position in the device, and the spark plug 2 is inserted into the front end of the mounting plate 3. Press the spark plug 2 with the attached pressing member 4' made of elastic material,
The spark plug 2 is held between the holding member 4 and the notched recess 5. The holding member 4' used here is formed by bending a wire rod, and the wire rods press against the spark plug at the top and bottom of the mounting plate 3, respectively, thereby holding the mounting plate at two places, the top and bottom. The spark plug 2 is designed to prevent the spark plug 2 from wobbling in the front-rear direction, that is, in the direction A in the figure, and changing its inclination. However, although spark plugs are required to accurately position their ignition tips, this structure does not take any measures to prevent wobbling in the left-right direction, that is, direction B in the figure. However, there was a problem in that it was difficult to reliably position the spark plug in the correct position.

[Purpose of invention]

The present invention was devised in view of the above points, and its main purpose is to install a spark plug that is mounted on the front edge of a mounting plate with its mouth axis orthogonal to the mounting plate. Eliminate wobbling forward, backward, left and right,
An object of the present invention is to provide a mounting structure for a gas burner spark plug, which can reliably position the ignition tip of the spark plug at a fixed position.

[Disclosure of invention]

In the mounting structure for a gas burner spark plug according to the present invention, a notch is formed at the front edge of the mounting plate to accommodate the body of the spark plug, and a first protrusion and a second protrusion are formed from both left and right sides of the front end of the mounting plate, respectively. A first locking edge and a second locking edge are respectively formed on the rear end edge of each protrusion, and an inclined edge running diagonally backward inward from the first locking edge is a first locking edge. The retaining edge is formed on one side of the rear mounting plate and is attached to the front end of the mounting plate, and has a long hole along its longitudinal direction, and a pair of retainers extending from the center in the longitudinal direction to one side of the retaining member. This is a spring plate with a protruding piece, and when the holding member is attached to the mounting plate by inserting the front end of the mounting plate into the elongated hole, the center part in the longitudinal direction resists the spring force. The ignition plug in the notch is held in the notch by pressing the spark plug in the bent recess, and the peripheral edges of both ends of the elongated hole are applied with a spring restoring force to the first locking edge and the second locking edge, respectively. The holding member is connected to the mounting plate by pressure contact, and when the holding member is connected to the mounting plate, the above-mentioned pair of holding pieces are attached to the circumferential surface of the spark plug at two vertically separated locations, respectively, above and below the mounting piece. When pressing the spark plug to remove the spark plug, press the holding member against the spring force so that the peripheral edge of one side of the elongated hole that is locked to the first locking edge moves along the inclined edge. By moving the part rearward, the second locking edge is disengaged from the peripheral edge of the other end of the elongated hole, the holding member is removed from the mounting plate, and the spark plug is taken out from the mounting plate.

The present invention will be explained in detail below based on embodiments shown in the figures. The ignition plug 2 is formed into a vertically long columnar shape, and the ignition tip of the ignition plug 2 protrudes into an ignition chamber 15 formed on one side of the gas burner 1, as shown in FIG. This gas burner 1 has many flame holes 2 on the circumference.
0 and this burner body 17
It is composed of an ignition chamber 15 provided on one side of the interior and a mixing pipe 16 connected to the rear end of the burner body 17, and a part of the mixture is sent from the mixing pipe 16 to the side of the flame hole 20 of the burner body 17. is taken into the ignition chamber 15. The ignition chamber 15 has an opening provided on one side that matches the pilot hole 21 provided on the circumferential surface of the burner body 17, and the mixing tube 1 is passed through the introduction hole 22 provided on the other side.
6, the air-fuel mixture is sent into the ignition chamber 15. A protrusion 23 is formed on the inner surface of the ignition chamber 15 and faces the ignition tip of the spark plug 2 protruding into the ignition chamber 15.
The air-fuel mixture in the ignition chamber 15 is ignited by the discharge between the ignition tip of the ignition plug 2 and the protrusion 23, and the ignited flame passes through the pilot hole 21 and reaches the burner body 17.
By going around the outer surface, the air-fuel mixture discharged to all the flame holes 20 is ignited. This spark plug 2
As shown in the figure, is held by a holding member 4 to a mounting plate 3 attached to the tip of a mixing tube 16. As shown in FIG. 4, the mounting plate 3 is a single metal plate having a mounting hole 25 approximately in the center, into which the tip of the mixing tube 16 is fitted. That is, the gas burner 1 is fixed at a fixed position. A cutout recess 5 for cutting the body of the spark plug 2 is formed at the left and right center of the front end of the mounting plate 3, and as shown in FIG. The spark plug 2 is housed in the notch recess 5 in such a manner that the side peripheral edge of the notch recess 5 is fitted. From both left and right ends of the front edge of this mounting plate 3, as shown in FIG. A first locking edge 8 and a second locking edge 9 are formed respectively, and a first recess 26 is formed behind each protrusion 6, 7.
A second recess 27 is formed. The first locking edge 8 continues to the bottom edge of the first recess 26 via a sloped edge 10 that runs diagonally backward and inwardly from the first locking edge 8 and runs rearward along this sloped edge 10. According to the inclined edge 1
0 and the tip of the second protrusion 7 becomes shorter. On the other hand, as shown in FIG.
It is a single elongated spring plate formed in such a shape that a holding piece 14 extends toward one side of the band plate part 4a from the tip of each of the strips, and the length of the elongated hole 12 is the same as that of the first strip part 4a.
and shorter than the distance between the tips of the second protrusions 6 and 7,
Moreover, it is longer than the distance between the rear end of the inclined line 10 and the tip of the second protrusion 7. This holding member 4 is attached to the front end of the mounting plate 3 after the spark plug 2 is accommodated in the notch 5 at the front end of the mounting plate 3. First, the first protrusion is inserted into one end of the elongated hole 12. 6, push the contact point between one end of the elongated hole 12 and the mounting plate 3 backward along the inclined edge 10 to push down one end of the holding member 4 backward, and then insert it into the other end of the elongated hole 12. The second protrusion 7 is passed through, and at this time,
As shown in FIG. 6a, the longitudinal center portion of the holding member 4 presses against the body of the spark plug 2, and receives force from the spark plug 2, causing the center portion having the tongue piece 13 and the holding piece 14 to A spring force that bends forward and displaces both longitudinal ends forward acts on the holding member 4, and this spring restoring force causes the elongated hole 12 to
The circumferential edges of both ends in the longitudinal direction are pressed into contact with the first locking edge 8 and the second locking edge 9, respectively, so that the holding member 4 is coupled to the mounting plate 3, and at the same time, the spark plug 2 is attached to the mounting plate by the holding member 4. It is held in the cutout recess 5 of No. 3. At this time, the tongue piece 13 and the holding piece 14 of the presser member 4 press against the circumferential surface of the spark plug 2 at two places, upper and lower, sandwiching the mounting plate 3, as shown in FIGS. 2 and 6. As a result, the spark plug 2 is held between the upper and lower tongue pieces 13 and the bottom edge of the notch recess 5 to eliminate back and forth wobbling in the spark plug 2, and at the same time, the upper and lower holding pieces 14 and the notch recess The ignition plug 2 is held between the ignition plug 2 and one side edge of the ignition plug 5 to eliminate wobbling of the ignition plug from side to side, and the ignition tip of the ignition plug 2 is accurately positioned at a predetermined position. When removing the spark plug 2, the first
By pressing one longitudinal end located next to the locking edge rearward along the inclined edge 10 against the spring force, the entire presser member 4 moves to the side of the second protrusion 7 to close the elongated hole 12. The other end is disengaged from the second locking edge 9, and the presser member 4 is removed from the mounting plate 3.

[Effect of idea]

As described above, in the present invention, the holding member that presses the spark plug attached to the mounting plate and housed in the notch at the front end of the mounting plate has a pair of holding pieces extending from the center in the longitudinal direction to one side of the holding member. It is a spring plate formed into a protruding shape, and when the holding member is connected to the mounting plate, a pair of holding pieces press against the circumferential surface of the spark plug at two vertically separated locations, respectively on the top and bottom of the mounting piece, so that it is held in place. The spark plug is pressed at the top and bottom of the mounting plate with a holding member other than the piece, and is held between the bottom edge of the notch, which prevents the spark plug from wobbling in the front and back direction, and at the same time holds it in place. The spark plug is pressed by the two pieces at the top and bottom that sandwich the mounting plate, and is held between the side edges of the notch recess, thereby preventing the spark plug from wobbling in the left-right direction.
As a result, there is an advantage that the ignition tip of the spark plug can be accurately positioned at a predetermined position.

[Brief explanation of the drawing]

Figure 1a is an explanatory diagram showing the problems of the conventional example;
Figure b is a sectional view taken along the Z-Z line in Figure 1, Figure 2 is a perspective view showing an embodiment of the present invention, Figure 3 is a sectional view showing an example of the use of the same, and Figure 4a is a sectional view of the invention. A plan view showing the mounting plate used for the same as above, Fig. 4b is the X in Fig. 4a.
- X-ray cross-sectional view; Figures 5a and 5b are front and plan views showing the holding member used in the above; Figure 6a is a partially cutaway plan view showing the joint between the mounting plate and the spark plug; , FIG. 6b is a sectional view taken along the line Y-Y in FIG. 6a, where 1 is a gas burner, 2 is a spark plug, 3 is a mounting plate, 4 is a holding member, 5 is a notch, and 6 is a first
a protrusion, 7 a second protrusion, 8 a first locking edge, 9 a second
A locking edge, 10 is an inclined edge, 12 is a long hole, and 14 is a holding piece.

Claims (1)

[Scope of utility model registration request] This is a structure in which a spark plug for a gas burner is attached to a mounting plate that is fixed in a fixed position using a holding member with its mouth axis perpendicular to the mounting plate, and the body of the spark plug is attached to the front edge of the mounting plate. At the same time, a first protrusion and a second protrusion protrude laterally from both left and right sides of the front end of the mounting plate, and a first locking edge and a second locking edge are respectively attached to the rear edge of each protrusion. A slanted edge is formed on one side of the mounting plate behind the first locking edge and runs diagonally rearward inward from the first locking edge, and the presser member is long along its longitudinal direction. a spring plate having a hole and a pair of holding pieces protruding from the longitudinal center portion onto one surface of the holding member;
When the holding member is attached to the mounting plate with the front end of the mounting plate inserted into the elongated hole, the spark plug in the notch is bent with the longitudinal center part bent against the spring force. The spark plug is held in the notched recess by pressing, and the peripheral edges of both ends of the elongated hole are pressed against the first locking edge and the second locking edge by the spring restoring force accompanying the pressing of the spark plug. Then, the holding member is coupled to the mounting plate, and when the holding member is coupled to the mounting plate, the pair of holding pieces press against the circumferential surface of the spark plug at two vertically separated locations on the upper and lower sides of the mounting plate, respectively. 1
When the holding member is moved backward against the spring force so that the peripheral edge of one side of the elongated hole that is locked to the locking edge moves along the inclined line, the second
A mounting structure for a gas burner spark plug in which the locking edge and the peripheral edge on the other side of the elongated hole are disengaged.