JPH0583988U - Temperature switch - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an inexpensive and responsive sealed mold type temperature switch with a small shape. [Structure] Temperature-sensitive magnetic body 2, permanent magnet 1, leads 3a and 3b of reed switch 3, and wire connection terminals 4a and 4b
A structure of the temperature switch 7 having a structure in which the leads 3a and 3b of the reed switch and the wire connection terminals 4a and 4b are connected at a right angle, and the surface of the temperature-sensitive magnetic body 2 directly contacts the mounting surface 8 of the temperature switch. Is the temperature switch 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a sealed mold type temperature switch in which a temperature switch composed of a reed switch, a temperature sensitive magnetic body, a permanent magnet and a wire connecting terminal is integrally molded.

[0002]

[Prior Art]

 Conventionally, in this type of temperature switch, as shown in FIG. 5A, a reed switch 3 having leads 3a and 3b at both ends and wire connection terminals 4a and 4b are integrally sealed with resin 5. After molding, as shown in FIG. 5 (b), the two U-shaped temperature-sensitive magnetic bodies 2 and the U-shaped permanent magnet 1 are fixed to the heat collecting fins 6 having good heat conduction, and the (c) of FIG. ) The heat collecting fin 6 fixing the U-shaped temperature-sensitive magnetic body and the U-shaped permanent magnet, the reed switch and the wire connecting terminals 4a and 4b are integrally molded with the resin 5 to obtain the temperature. The switch is completed. However, since the heat collecting fins 6 are provided and the U-shaped temperature-sensitive magnetic body 2 and the U-shaped permanent magnet 1 are retrofitted, the shape becomes large and the number of parts also increases.

[0003]

[Problems to be solved by the device]

 In order to eliminate the above-mentioned drawbacks, the present invention uses a temperature switch in which the surfaces of the temperature-sensitive magnetic body and the permanent magnet are in direct contact with the mounting surface of the temperature switch. It is intended to provide a temperature switch.

[0004]

[Means for Solving the Problems]

 That is, the present invention is a temperature switch in which a reed switch, a temperature-sensitive magnetic material, a permanent magnet, and a wire connection terminal connected to the lead of the reed switch are integrally molded with a molding resin. It is characterized by penetrating the reed switch into the permanent magnet, connecting the lead switch lead and the wire connection terminal at a right angle, and having a structure of a temperature-sensitive magnetic body that is in direct contact with the mounting surface of the temperature switch. It is a temperature switch.

[0005]

[Action]

 In this type of conventional temperature switch, the wire connection terminals are connected in a straight line to the leads of the reed switch, so the terminal structure is long, and the temperature-sensing magnetic body and permanent magnet are attached to the heat collecting fins. The temperature of the mounting surface was collected with heat fins and the temperature of the heat collecting fins was transmitted to the temperature-sensitive magnetic material of the temperature switch to control the on / off of the temperature switch. Connecting to the lead of the reed switch will increase the space, so connect the wire connection terminal directly from the lead of the reed switch, stop the heat collecting fins, and directly contact the temperature-sensitive magnetic substance with the bottom of the temperature switch. By providing a sealed mold type temperature switch in which the surface of the temperature-sensitive magnetic material is in direct contact with the mounting surface of the temperature switch, the shape is small and the response is high. It is possible to provide a shape-type temperature switch.

[0006]

【Example】

 Hereinafter, the present invention will be described based on embodiments. FIG. 1 shows elements of the wire connecting terminals 4a and 4b and the reed switch 3, and the leads 3a and 3b, the permanent magnet 1 and the temperature-sensitive magnetic body 2 before encapsulation molding according to an embodiment of the present invention. The reed switch 3 has a kamaboko-shaped temperature-sensitive magnetic body 2 and a kamaboko-shaped permanent magnet 1 arranged on the outer periphery of the central portion of the lead switch 3, and the reed switch 3 penetrates the temperature-sensitive magnetic body and the permanent magnet. The terminals 3a and 3b have a structure joined to the wire connection terminals 4a and 4b.

FIG. 2 shows the structure of the temperature switch 7 which is sealed and molded according to an embodiment of the present invention. In FIG. 2A, one surface of the mounting surface 8, the semi-cylindrical thermosensitive magnetic body 2 and the semi-cylindrical permanent magnet 1 are the same surface. The temperature-sensitive magnetic body 2 directly contacts the mounting surface 8 of the temperature switch, and the temperature of the mounting surface is directly transmitted to the temperature-sensitive magnetic body. The temperature switch becomes compact by mounting 4a and 4b at right angles. 2B is a temperature switch in which the reed switch 3 has the leads 3a and 3b protruding from the resin 5 in which the resin 5 is used to seal and form the kamaboko permanent magnet, the kamaboko type temperature-sensitive magnetic material, and the reed switch. It is a completed drawing of 7.

FIG. 3 is a diagram showing a structure of another embodiment of the present invention, in which the shapes of the temperature-sensitive magnetic body 2 and the permanent magnet 1 are rectangular parallelepiped and are flush with the mounting surface. As shown in the drawing, the rectangular parallelepiped permanent magnet 2 and the rectangular parallelepiped temperature-sensitive magnetic body 2 are in direct contact with the mounting surface 8 of the temperature switch 7, and the leads 3a and 3b of the reed switch 3 are connected to the wire connecting terminals 4a ,. The temperature switch 7 becomes compact by mounting 4b at a right angle.

FIG. 4 is a view showing a structure of another embodiment of the present invention. One surface of a kamaboko-shaped temperature-sensitive magnetic body 2 is obtained by combining a kamaboko-shaped temperature-sensitive magnetic body 2 and a ring-shaped permanent magnet 1. Is the same surface as the mounting surface. As shown in the figure, the temperature-sensitive magnetic body 2 is in direct contact with the mounting surface 8 of the temperature switch 7, and the wire connecting terminals 4a and 4b are mounted at right angles to the leads 3a and 3b of the reed switch 3 to prevent temperature change. The switch 7 becomes compact. According to this, at least the temperature-sensitive magnetic body 2 constitutes the same surface as the mounting surface, so that the thermal response becomes much better than that of the conventional sealed mold type temperature switch, and the heat conduction of aluminum or the like is good. The thermal response is better than or equal to that of a temperature sensor of the type in which metal is wrapped around the temperature switching element. Further, since the conventional temperature-sensitive magnetic body and the permanent magnet are integrally molded, the shape can be made smaller than the conventional example shown in FIGS. 5 (a), 5 (b) and 5 (c). Further, the heat collecting fins are used to improve the heat response, but since they are not necessary, the number of members is reduced and the product can be supplied at low cost. Although the embodiment of the present invention is a normally closed type temperature switch, it goes without saying that a normally open type temperature switch can be similarly applied.

[0010]

[Effect of the device]

 As described above, according to the present invention, by providing the temperature-sensitive magnetic body and the permanent magnet on the same surface as the mounting surface or by exposing the temperature-sensitive magnetic material, it is possible to provide a temperature switch having good thermal response.

[Brief description of drawings]

FIG. 1 is a view showing a sealed mold type temperature switch according to the present invention, and is a perspective view showing a temperature-sensitive magnetic body, a permanent magnet, a reed switch, and a wire connection terminal.

FIG. 2 is a block diagram of a sealed mold type temperature switch according to the present invention. FIG. 2A is a front view of the temperature switch sealed and molded. FIG. 2B is a perspective view of the temperature switch sealed and molded.

FIG. 3 is a front view of another embodiment of the sealed mold type temperature switch in which the permanent magnet and the temperature-sensitive magnetic material of the present invention are rectangular parallelepipeds.

FIG. 4 is a front view of a sealed mold type temperature switch in which another ring-shaped permanent magnet of the present invention and a kamaboko type temperature-sensitive magnetic material are combined.

FIG. 5 is a configuration diagram of a conventional sealed mold type temperature switch. Figure 5
(A) is a perspective view of a conventional sealed mold type temperature switch to which a conventional heat collecting fin is not attached. FIG. 5B is a perspective view of a permanent magnet and a temperature-sensitive magnetic body attached to a conventional heat collecting fin. FIG. 5C is a perspective view of a conventional sealed mold type temperature switch.

[Explanation of symbols]

 1 permanent magnet 2 temperature-sensitive magnetic material 3 reed switch 3a, 3b reed switch lead 4a, 4b wire connection terminal 5 resin 6 heat collecting fin 7 temperature switch 8 mounting surface

Claims (1)

[Scope of utility model registration request] 1. A temperature switch in which a reed switch, a temperature-sensitive magnetic body, a permanent magnet, and a wire connection terminal connected to a lead of the reed switch are integrally molded with a molding resin. The permanent magnet is penetrated through the reed switch, the reed switch lead and the wire connection terminal are connected at a right angle, and the structure has a surface of a temperature-sensitive magnetic material that is in direct contact with the mounting surface of the temperature switch. Temperature switch to do.