JPS5916668Y2 - Gas appliance operating device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an operating device for gas appliances.

As an operating device for gas appliances of this type that includes a piezoelectric mechanism, one having a structure as disclosed in Japanese Utility Model Application Laid-Open No. 48-34759 is known.

After storing the piezoelectric element, hammer, and spring in a storage case with a U-shaped cross section and opening on the side, the side opening is covered with a cover and fixed to the board, and the operating shaft is integrated from the storage case. The projecting piece is supported by penetrating the base plate, and a cam plate attached to the operating shaft is engaged with the hammer through a pawl hole formed in the cover.

According to this configuration, the operating shaft is supported by the protruding piece of the storage case and the base plate, thereby reducing vibration of the operating shaft, and since the storage case also serves as the support plate for the operating shaft, the number of parts can be reduced. However, the structure for storing the three items has to be composed of a U-shaped storage case and a cover, which results in a complicated structure, poor assembly workability, and high cost.

In view of the above problems, the present invention aims to improve assembly work efficiency and reduce costs by reducing the number of parts, as well as to ensure reliable and stable support of the operating shaft.The following is an example of the present invention based on the drawings. I will explain.

Reference numeral 1 designates a flat plate-shaped substrate, on one side of which is provided an insertion hole 3 with a guide cylinder 2 formed by bending the hole edge at a substantially right angle, and a piezoelectric element 2 described later.
3. A rectangular storage hole 4 for storing a hammer 28 and a spring 30 in series is provided on the other side, and dowels 5, 5' for positioning are provided at appropriate locations.

Here, the storage hole 4 protrudes from a part of the edge of the hole in the longitudinal direction toward the one surface 6 side of the substrate 1, and then is bent toward the inside of the hole 4 so as to have a cross-sectional shape. A pair of extended locking pieces 7
, 7' are arranged opposite to each other with their positions shifted in the longitudinal direction, and on the other side in the elongated direction, a pair of holes are formed integrally from the hole edge in a double-opening shape and are bent at an angle toward one surface 6 of the substrate 1. guide plate 8,
8', and between this guide plate and a locking piece 7 near the guide plate, a part of the hole edge protrudes facing into the storage hole 4 with a gap 9 between the tips. A pair of protruding pieces 10.1
0' is formed.

Reference numeral 11 denotes an auxiliary plate formed by appropriately bending a sheet metal, and is fixed with screws 15 and 15 with a space 14 provided on the other surface 13 of the substrate 1 at flanges 12 and 12' formed by bending the periphery. It consists of a pressing part 16 that covers the hole 4, and a supporting part 17 that is integrally extended from the pressing part to the upper surface side of the insertion hole 3 in a step shape so as to be spaced apart from the substrate 1. The pressing part 16 has a guide plate. A slit-shaped sliding hole 1 corresponds to the gap 18 between 8 and 8'.
A support hole 21 is formed in the support portion 17, facing the insertion hole 3, and having a guide tube 20 provided therein by bending the hole edge at a substantially right angle toward the substrate 1 side.

Note that 22 and 22' are locking holes that engage with dowels 5 and 5' provided on the substrate 1.

Reference numeral 23 denotes a piezoelectric element, which has a conductive receiver 25 exposed at one end of a prismatic resin case 24 housing a piezoelectric body, and a cylindrical pressure receiver 26 exposed from the other end. It is stored on one side of the storage hole 4 facing the guide plates 8, 8', and is fixed by the locking pieces 7, 7' and the pressing part 16 of the auxiliary plate 11, and the other end and the protruding piece 10, 10'. A spring plate 27 is inserted between them to prevent movement in the axial direction.

28 is a hammer that is slidably housed between the guide plates 8, 8' and the suppressing portion 16, and has a pin 29 protruding in the radial direction, which is inserted into the sliding hole 19, and a spring 30. The piezoelectric element 23 is constantly struck by the pressure receiving tool 26.

Reference numeral 31 designates an operating shaft that extends through the insertion hole 3 and the support hole 21, and has a cam 32 with a diameter larger than the shaft diameter integrally molded at one end, and an operating knob 33 fixed to the other end. A pin 34 is made to protrude in the radial direction at the intermediate portion and is fixed with an E ring 35, and furthermore, a spring 36 stretched between this pin and the auxiliary plate 11 is always biased toward the other end side with respect to the board 1, etc. ing.

A cam plate 37 is slidably fitted between the spring 36 of the operating shaft 31 and the auxiliary plate 11, and has a claw portion that engages with the pin 29 of the hammer 28 within a predetermined rotation range of the operating shaft 31. There are 38.

A stopper 39 is bent at a substantially right angle from the support portion 17 of the auxiliary plate 11 in a direction opposite to the substrate 1 side, and is provided within the rotation range of the pin 34 when the operating shaft 31 is rotated downward.

Next, the assembly of the gas appliance operating device according to the present invention will be explained.

First, the piezoelectric element 23, spring plate 27, hammer 28, and spring 30 are stored in predetermined positions in the storage hole 4 of the substrate 1, and then the pin 29 of the hammer 28 is inserted into the sliding hole 19, and then the dowels 5, 5' are inserted. The auxiliary plate 11 and the substrate 1 are joined by engaging the locking holes 22 and 22', and the screws 15 and 15 are fastened.

Next, with the pin 34 removed, the operating shaft 31 is sequentially inserted into the insertion hole 3 and the support hole 21 from the other end, and then the cam plate 37 and the spring 36 are sequentially inserted into the operating shaft 31 from the other end. , then attach pin 34 to E-ring 35.
Once it is fixed to the operating shaft 31 at , the assembly is completed.

As mentioned above, the present invention includes a piezoelectric element, a board having pins protruding in the radial direction, a housing part and an insertion hole for storing in series a hammer that applies an impact to the element, and a spring that biases the hammer. , a pressing part that covers the storage part and sandwiches the piezoelectric element, hammer, and spring and has a sliding hole into which the pin is inserted in a protruding manner; and a pressing part that is integrally formed in a step shape so as to be spaced apart from the substrate from the pressing part. an auxiliary plate which is joined and fixed to the substrate and includes a support part extending from the base plate and having a support hole formed opposite to the insertion hole; an operating shaft penetrating through the insertion hole and the support hole; It is composed of a cam plate that has mating claws and is rotatably mounted on the operating shaft on the support part, and the piezoelectric element, hammer, and spring are clamped together and the operating shaft is supported. This can be done with three parts, the board and the auxiliary plate, which reduces the number of parts compared to the conventional method, improving assembly work efficiency and reducing costs.

In addition, since the support part of the auxiliary plate extends in a stepped manner in the direction away from the board from the pressing part that clamps the three members, the distance between the insertion hole of the board and the support hole of the support part can be increased. Compared to a structure in which the support part is formed on the same plane as the pressing part, the operation shaft can be supported reliably and stably with less vibration, and other advantages are great.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an operating device for a gas appliance according to the present invention, FIG. 2 is a partially sectional side view, FIG. 3 is a front view, and FIG. 4 is an exploded perspective view. 1... Board, 4... Storage hole (storage part)
, 11... Auxiliary board, 14... Space, 2
3... Piezoelectric element, 28... Hammer 3
1... Operation axis.

Claims (1)

[Scope of utility model registration request] A piezoelectric element, a hammer with a pin protruding in the radial direction that applies an impact to the element, and a substrate having an insertion hole and a housing part that stores in series a spring that biases the hammer, and a piezoelectric element that covers the housing part. a pressing part having a sliding hole in which the element, hammer, and spring are sandwiched and the pin is inserted in a protruding manner; and the insertion hole is integrally extended in a step shape so as to be spaced apart from the substrate from the pressing part. a support part having a support hole formed opposite to the base plate, an auxiliary plate joined and fixed to the substrate, an operating shaft penetrating through the insertion hole and the support hole, and a claw part that engages with the pin. and a cam plate rotatably mounted on the operating shaft on the support part.