JPH0413938A - Electronic thermometer - Google Patents

Abstract

PURPOSE:To reduce the number of parts and cost of mold and parts by molding packing together with a case and switch in two colors. CONSTITUTION:The waterproof structure of an electronic thermometer is formed by fixing a packing 2 together during the molding of a case 1 of the thermometer in two colors. A hard material is used for the case 1 and a soft material is used for the packing 2. And a packing 4 is molded on a switch 3 in two colors. A hard material is used for this switch 3 and a soft material is used for the packing 4. In both cases, different materials are molded with a single metal mold in two colors.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a waterproof structure for an electronic thermometer.

[Summary of the Invention] The present invention provides an electronic thermometer that has a waterproof structure using a gasket, and by molding the gasket together with the case and switch in two colors, the cost of parts and processing can be reduced, and waterproofness can be improved. Improvements [Conventional technology] Conventional waterproof structures for electronic thermometers using gaskets include placing the gaskets in a case and pressing them together to create a waterproof structure, or inserting gaskets into a switch to create a waterproof structure. It was something to do.

[Problems to be Solved by the Invention] However, with the above-mentioned conventional technology, a mold must be made and a mold must be prepared for the packing to match the case and the switch, resulting in a mold cost of 9 parts. There is a problem.

Further, there is a problem in that a packing process must be provided in the processing operation, which increases processing costs.

Furthermore, during processing, there is a high probability of waterproofing failure due to incorrect setting of the seal, and of dirt and fluff adhering (thereby, there is a problem that the retention rate of waterproofing failure is reduced).

Also, when the gasket is set, there is a possibility that water may enter from either the top or bottom of the gasket, so if you do not manage the condition of both the upper and lower cases and the gasket, a reliable waterproof structure cannot be ensured. has.

SUMMARY OF THE INVENTION The present invention aims to solve these drawbacks, and its purpose is to provide an electronic thermometer that can easily have a reliable waterproof structure at a low cost.

[Means for Solving the Problems] The waterproof structure of the electronic thermometer of the present invention is characterized in that, when molding the case and switch of the thermometer, a gasket is attached to one piece and two-color molding is performed.

[Example] Figure 1 is a sectional view of a case in an example of the present invention, in which a thermometer main body case 1 has a two-color molded sleeve 2.

A hard material is used for the 10th case, and a soft material is used for the 2nd case.

FIG. 2 is a cross-sectional view of a switch according to an embodiment of the present invention, in which a gasket 4 is molded on the switch 3 in two colors. Use a hard material for switch 3,
The packing is made of soft material. All of them are two-color molds made of different materials using a single mold.

[Effects of the Invention] As described above, according to the present invention, by molding the packing together with the case and the switch in two colors, the number of parts can be reduced, and the mold cost and the cost of two parts can be reduced. has.

Furthermore, since there is no need to set the packing during processing, the work is simplified and processing costs can be reduced.

Also, packing mistakes and dust during processing.

This has the effect that the probability of fluff adhesion is greatly reduced, the yield rate of waterproofing defects is improved, and a reliable waterproof structure can be achieved at a lower cost.

In addition, because one side of the packing is molded inside the plastic, it is completely waterproof, and the packing on the other side controls the condition of the case (we can guarantee waterproofing by just doing so).
This has the effect of producing reliable waterproof products that are more reliable than conventional products.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an electronic thermometer body case showing the structure of an embodiment of the present invention. Fig. 2 is a sectional view of an electronic thermometer switch showing the structure of an embodiment of the present invention. Fig. 6(a) is a front view of the electronic thermometer body case showing the conventional structure. Fig. 6(b) ) is a side view of the electronic thermometer main body case showing the conventional structure. Fig. 3 (C) is a sectional view of the electronic thermometer main body case A-A showing the conventional structure. Fig. 4 (a) is the conventional A front view of an electronic thermometer switch showing a 4G4 structure. Fig. 4Cb) is a cross-sectional view of an electronic thermometer switch showing a conventional 134 structure. 1. Thermometer body case of the present invention 2.・
・・・・・・Putskin for thermometer body case of the present invention ・・・・・・Thermometer switch of the present invention ・・・−
...Packskin for thermometer switch of the present invention...
・・Prior art thermometer body case ・・・Packskin 15 for thermometer body case of conventional technology ・・・Canoff 26 ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ Previous technology thermometer switch 24
......Prior art thermometer switch gasket 1] Applicant: Seiko Epson Co., Ltd. Agent Patent attorney: Yoshizo Reiki (and one other person) Figure 1 Figure 2 Figure 3 (a ) Figure 3 (b) Figure 3 (C)

Claims (1)

[Claims] An electronic thermometer having a waterproof structure using packing, characterized in that the packing is molded in two colors together with a case and a switch.