JPH03216925A - Sealed bimetal thermostat - Google Patents

Abstract

PURPOSE:To miniaturize a thermostat, prevent the deformation due to an external force at the time of fitting, and obtain a sure insulating seal with simple assembly by inserting the thermostat into a housing, folding and fixing a partition plate between terminals and lead wires of the thermostat, and sealing and hardening the housing with a molding material. CONSTITUTION:Outside connecting lead wires 12, 12' are inserted into round holes 11, 11' of a housing 7 and connected to terminals 13, 13' of a thermostat 6, then the thin section 8 of the housing 7 is folded. The projection 10 of a partition plate 9 and the angular hole 15 of the housing 7 are coupled while the partition plate 9 is brought into contact with the bottom face 14 of the thermostat 6, thus the thermostat 6 can be simply positioned. The opening section of the housing 7 is sealed and hardened with a molding material 17. The thermostat 6 is miniaturized, the deformation due to an external force at the time of fitting is prevented, it has a simple structure, it can be assembled without a large facility, and a sure insulating seal is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to bimetallic thermostats used in refrigerator-freezers, etc.Recent technology In recent years, bimetal thermostats for refrigerator-freezers, etc., are required to be small, waterproof, and easy to install. DESCRIPTION OF THE PREFERRED EMBODIMENTS A conventional bimetal thermostat for a refrigerator or freezer as described above will be described below with reference to the drawings. 6th
The figure shows the structure of a conventional bimetallic thermostat for refrigerators, refrigerators, etc. 1 is a thermostat with a bimetallic part that uses a snap action to displace due to temperature changes, and the terminal part is a lead wire 2 for external connection. are connected with solder etc. 3 is a resin tube, and after housing the thermostat 1, both ends 4a
, 4b are sealed by high frequency welding or the like.

Problems to be Solved by the Invention In the bimetal thermostat having the above configuration, not only does the outer size of the tube 3 become large, but also the characteristics of the thermonuta change due to the deformation of the terminal part etc. due to external force when installed in a refrigerator, freezer, etc. There is a fear. In addition, due to the air inside the tube 3 contracting during cooling, the lead wire 2
This has the drawback that water can enter the tube and short-circuit the switch. Further, the tube 3 and the lead wire 2 were not completely melted and had to be resealed with a solvent or the like, which had an adverse effect on the human body and required a large amount of installation work.

In view of the above-mentioned drawbacks, the present invention provides a bimetallic thermostat which is small in size, does not deform due to external force during installation, and is securely insulated and sealed.

Means for Solving the Problems In order to solve the above problems, the bimetallic thermostat of the present invention for refrigerators, refrigerators, etc. has a thermostat attached to a substantially cylindrical resin housing having a partition plate integrally formed at one end with a thin wall portion interposed therebetween. The lead wire connected to the terminal of the Thermo Nutano 1- is pulled out from the cylinder of the housing described in 11J, the partition plate is bent at the thin part, and the protrusion provided at the tip of the partition plate and the housing The opening of the housing is sealed with a molding material and hardened.

According to the present invention, the thermostat is inserted into the housing with the above-mentioned configuration, and the partition plate is bent and fixed between the terminals and the lead wires of the thermostat, and the thermostat is sealed and hardened with a molding material, so it is small and compact. , there is no deformation due to external force during installation, and a reliable insulation seal is possible with simple assembly.

EXAMPLE Hereinafter, a bimetallic thermostat for a refrigerator-freezer or the like according to an embodiment of the present invention will be described with reference to the drawings.

Figure 1. Figures 2, 3, and 4 show a bimetallic thermostat 6 for a refrigerator, refrigerator, etc., according to an embodiment of the present invention, and 6 has a switch part that uses a bimetal that can be displaced by snap action due to temperature changes. The thermostat γ has a generally cylindrical resin housing and has a partition plate 9 integrally formed at one end with a thin wall portion 8 interposed therebetween, and a protrusion 10 is provided at the tip of the partition plate 9. A round hole 11.11' is provided in the cylindrical surface of the housing 7,
External connection lead wire 1 2 . 12' is inserted through the terminal 12' and connected to the terminal 13, 13' of the thermostat 6. The partition plate 9 of the Ail housing 7 is bent at the thin wall part 8, and the projection 1o at the tip of the partition plate 9 and the cylindrical surface of the housing 7 are provided in a state where the partition plate 9 is in contact with the bottom 14 of the thermostat 6. It engages with the square hole 15.

The heat-sensitive member 16 of the thermostat 6 and the housing 7 are press-fitted and fixed.

The opening of the housing 7 is sealed with a molding material 17 and hardened.

As described above, according to the bimetal thermostat of the refrigerator-freezer, etc. of this embodiment, the round holes 1 1 , 1 of the housing 7
1' is the lead wire for external connection 1 2 . 1 2' and connected to the terminal 13.1d of the thermostat 6, bend the thin part 8 of the housing 7, and with the partition plate 9 and the bottom 14 of the thermostat 6 in contact with each other, connect the protrusion 1o of the partition plate and the housing. Since the square holes 15 of 7 are engaged, the thermostat 6 can be easily positioned, and the insulation between the terminals is also improved.

After that, the opening of the housing 7 is sealed and hardened with the molding material 17, resulting in a small size, no deformation due to external force during installation, a simple structure that can be assembled without large equipment, and a reliable insulation seal. is obtained.

Effects of the Invention As described above, the present invention provides a thermostat having a switch part using a bimetal that snaps into place and displaces due to temperature changes, and a substantially cylindrical resin housing having a partition plate integrally formed through a thin wall part. Insert it into the housing, bend the thin part of the housing, and with the bottom of the partition plate and thermostat in contact between the terminals, engage the protrusion of the partition plate with the square hole of the housing, and the opening of the housing is closed with the molding material. Sealing allows for easier thermostat positioning and improves insulation between terminals.

In addition, because it is small and has a simple structure that does not deform due to external force during installation, there is no need for large-scale equipment required for assembly.In addition, it is possible to supply a sealed bimetallic thermostat that can provide a reliable insulation seal. It's a huge amount.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a sealed bimetal thermostat according to an embodiment of the present invention, FIG. 2 is a sectional view of a sealed bimetal thermostat according to an embodiment of the present invention, and FIG. 3 is a perspective view of a sealed bimetal thermostat according to an embodiment of the present invention. FIG. 4 is an exploded perspective view of a sealed bimetallic thermostat in an embodiment of the present invention, and FIG. 5 is a conventional bimetallic thermostat for a refrigerator, refrigerator, etc. It is a structural diagram of Tasoto. 6...Thermostat, End...Housing, 8...Thin wall part, 9...Partition plate,
10...Protrusion, 11.11'...Round hole, 12,1! ...Lead wire, 13.13'...
...Terminal, 14...Bottom, 16...
・Square hole, 16...Heat-sensitive member, 17...
mold material.

Claims (1)

[Claims] A thermostat with a switch part using a bimetal that is displaced by snap action due to temperature changes, a generally cylindrical resin housing with a partition plate integrally formed at one end through a thin wall part, and attached to the terminal of the thermostat. the thermostat is inserted into the housing, the lead wire is pulled out from the cylindrical surface of the housing, the partition plate is bent at a thin portion, and a protrusion provided at the tip of the partition plate is formed. A sealed bimetallic thermostat, characterized in that the housing is engaged with a square hole provided in the housing, and the opening of the housing is sealed and hardened with a molding material.