JPS626496Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting device for a heat-sensitive element, such as a positive temperature coefficient thermistor, used for temperature control of a heating appliance.

In conventional heating appliances, the mounting position and fixing structure of the heat-sensitive element have important meanings because they greatly affect the performance of the heat-sensitive element. Accordingly,
It is necessary that the heat-sensitive element be mounted in an accurate position and not be easily moved by the application of external force. In addition, since the heat-sensitive element itself is made of porcelain, it is not very strong, and the main body may break due to impact, and it also has drawbacks such as being detached from the main body when force is applied to the attachment portion of the lead wire.

The present invention has been devised to eliminate the above-mentioned drawbacks, and the object is to provide a structure that ensures the performance of the heat-sensitive element, enhances the reliability of the product, and improves workability.

An embodiment of the present invention will be described below with reference to the drawings.

The structure of the embodiment is as shown in FIGS. 1 to 5, where 1 is a heat-sensitive element, for example, a positive temperature coefficient thermistor, and the lead wire 3 of the heat-sensitive element 1 is connected to the main body 2.
As shown in FIG. 2, it is formed at a fixed position from the lead wire mounting portion 4 at a right angle to the lead wire bending portion 14. 5 is a base cover, 6 is a cover, and the cover 6 has a tapered cylindrical convex portion 10;
A concave portion 8 is formed in the base cover 5 correspondingly, and the base cover 5 and the cover 6 are fitted into each other through the convex portion 10 and the concave portion 8. Reference numeral 12 denotes a mounting hole which passes through the center of the protrusion 10 and recess 8 of the base cover 5 and cover 6 and is fixed to the product body (not shown) with a screw. In addition, protrusions 7 facing each other are provided on the inside of the base cover 5 and the cover 6, and a heat-resistant rubber tube buffer 13 is fitted onto the protrusion 7, and the main body 2 of the heat-sensitive element 1 is held in the center from both sides by the buffer 13. It is something to do. Further, a through hole 9 for the lead wire 3 is provided in the base cover 5, and a lead wire pressing protrusion 1 is provided inside the cover 6 facing the through hole 9 to restrain the vicinity of the lead wire bent portion 14 of the heat sensitive element 1.
1.

The operation of the embodiment is to install the center of the main body 2 of the thermal element 1 at the buffer body 13 position on the base cover 5 side, and at the same time connect the lead of the base cover 5 from the tip of the lead wire 3 bent at the lead wire bending part 14. Insert the wire into the wire through hole 9 and insert the protrusion 10 of the cover 6 into the base cover 5.
If it is fitted into the recess 8, it will stick tightly and cannot be easily removed since it has a loose taper. Further, the heat-sensitive element 1 is securely held by the buffer 13 of the base cover 5 and the buffer 13 of the cover 6 placed over the base cover 5, and the lead wire 3 is held by the lead wire presser of the cover 6 near the lead wire bending portion 14. It is held down by the protrusion 11. The thus temporarily assembled heat-sensitive element is attached to the product body by screwing the heat-sensitive element through the attachment hole 12 into the product body. In this case, the tip of the lead wire 3 protrudes outside the base cover 5 of the heat-sensitive element mounting device, but since it is held down by the lead wire holding protrusion 11, even if an external force is applied to the lead wire 3, it will not reach the lead wire mounting portion 4. No external force can reach it.

According to the present invention, a concave portion and a convex portion for fitting the base cover and the cover are provided on either the opposite sides of the base cover or the cover, and the body of the heat-sensitive element is further provided between the base cover and the cover. By providing a protrusion that is held between the buffer body and holding the buffer body, and a lead wire holding protrusion that suppresses the lead wire bending portion of the heat-sensitive element, the heat-sensitive element can be held securely and securely. It has the effect of ensuring performance, increasing product reliability, and improving workability.
Temporary assembly is also easy, which is effective in expanding the scope of its use.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a heat-sensitive element of a heat-sensitive element mounting device showing an embodiment of the present invention, Fig. 2 is a perspective view of the heat-sensitive element when its lead wires are bent, and Fig. 3 is an installation of the heat-sensitive element. A partially cutaway front view of the apparatus, FIG. 4 is an A-O-O-A vertical cross-sectional view of the heat-sensitive element mounting apparatus, and FIG. 5 is a B-P-P-B vertical cross-sectional view of the same. 1...Thermal element, 2...Main body, 4...Lead wire attachment part, 5...Base cover, 6...Cover, 8
... recess, 10 ... protrusion, 11 ... lead wire pressing protrusion, 13 ... buffer body, 14 ... lead wire bending part.

Claims (1)

[Scope of utility model registration request] A concave portion 8 and a convex portion 10 for fitting the base cover 5 and the cover 6 are provided on either the opposing side of the base cover 5 or the cover 6, and furthermore, a heat-sensitive element 1 is provided on the base cover 5 and the cover 6. body 2 of
is held by a buffer body 13, and a protrusion 7 for holding the buffer body 13 is provided, as well as a holding protrusion 11 for restraining the lead wire bending part 14 of the heat sensitive element 1. Mounting device.