JP2586851Y2 - Temperature switch - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a temperature switch in which a reed switch is inserted into a hole of a temperature-sensitive magnetic material or a permanent magnet, a connection terminal is connected to a lead of the reed switch, and the whole is held by a mounting bracket. Regarding the structure.

[0002]

2. Description of the Related Art FIGS. 3A and 3B are a perspective view and an exploded perspective view of a conventional temperature switch of this type. 3A and 3B, the conventional temperature switch has a switch body 100 and a mounting bracket 32 for holding the switch body 100. The switch body 100 is held by the resin cap 26 being inserted (or fixed by bonding) into a tubular portion of the mounting bracket 32. The switch body 100 includes the switch unit 10
And lead wires 60 connected to the leads 16 provided at both ends of the switch section 10 by caulking terminals 50, respectively, for connection to the outside, and the outer periphery of the connection portion to keep the connection portion insulated. Tubular resin cap 26
And The switch unit 10 includes a reed switch 11 having reeds 16 at both ends, and a cylindrical temperature-sensitive magnetic body 12 and a permanent magnet 13 arranged on the outer periphery of the reed switch 11. When the environmental temperature is a predetermined temperature, conduction (or disconnection) is established.

[0003]

However, in the conventional temperature switch, the lead wire 60 is connected to the lead 1 as described above.
6, the external force,
In particular, there is a problem that the durability is poor with respect to an external force in the tensile direction.

When the resin cap 26 is fitted into the mounting bracket 32, the resin cap 26 is easily detached from the mounting bracket 32 depending on the fitting dimension of the fitting. There is a problem that it is weak against external force. On the other hand, when the resin cap 26 is bonded to the mounting bracket 32, the manufacturing process becomes complicated, and thus there is a problem that it is not suitable for industrial mass production.

Further, the switch body 100 is attached to the mounting bracket 32.
Since the work of passing through the cylindrical portion of the above-mentioned method causes deterioration of workability, there is a problem that it is not suitable for industrial mass production.

An object of the present invention is to provide a temperature switch which is excellent in durability and industrial mass productivity.

[0007]

According to the present invention, there is provided a switch unit having a lead that is electrically disconnected depending on the environmental temperature;
In a temperature switch having a cap unit for covering the lead, and a holding unit for holding the switch unit in which the lead is covered by the cap unit, the cap unit includes:
A temperature switch is provided, further comprising a terminal to which the lead is fixed, wherein the holding portion engages with the cap portion.

That is, in the present invention, the connection lead wire uses a connection terminal, the terminal is fixed to a resin cap, the lead of the reed switch and the terminal are connected by welding, and the whole is mounted in a semi-cylindrical shape. It is configured to be fixed with metal fittings, and has features that assembly is easy and stable holding strength can be secured.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a temperature switch according to an embodiment of the present invention will be described with reference to the drawings.

FIGS. 1A and 1B are a perspective view and an exploded perspective view of a temperature switch according to a first embodiment. FIG.
1A and 1B, the present temperature switch includes a switch unit 10 having a lead 14, a resin cap 20 arranged to cover the lead 14, and a mounting bracket 30 for holding these.

The switch section 10 is the same as the conventional example except that the lead 14 is formed in an L-shape. The resin cap 2 has a cylindrical shape, and includes a connection terminal 40 provided by insert molding, a lead insertion groove 21 extending from the end face to the connection terminal 40, and an engagement claw 22 formed on a side surface. The mounting bracket 30 has a semi-cylindrical portion, and has an engagement hole 31 on the side surface of the cylinder.

The lead 14 of the switch unit 10
It is inserted along the lead insertion groove 21 of the resin cap 20 and is soldered to the connection terminal 40. In this state, the engaging claw 22 of the resin cap 20 is engaged with the engaging hole 31 of the mounting bracket 30, and the two resin holders 20 and the switch portion 1 having the lead 14 fixed to the connection terminal 40 thereof.
0 is held by the mounting bracket 30.

FIGS. 2A and 2B are a perspective view and an exploded perspective view of a temperature switch according to a second embodiment. FIG.
1A and 1B, the switch 15 has a lead 15 cut to a predetermined length. The resin cap 23 has a connection terminal 41 formed into an L-shape.
However, it is the same as the first embodiment except that it is provided by insert molding, and has a lead insertion groove 24 extending from the end face to the connection terminal 41 and an engagement claw 25 formed on the side surface. The mounting bracket 30 is the same as that of the first embodiment, has a semi-cylindrical portion, and has an engagement hole 31 on the side surface of the cylinder.

The lead 15 of the switch unit 10
It is inserted along the lead insertion groove 24 of the resin cap 23 and is soldered to the connection terminal 41. In this state, the engagement claws 25 of the resin cap 23 are engaged with the engagement holes 31 of the mounting bracket 30, and the two resin holders 23 and
The switch section 10 in which the lead 15 is fixed to the connection terminal 41 is held by the mounting bracket 30.

[0015]

According to the temperature switch of the present invention, the cap for covering the lead is provided with a terminal to which the lead is fixed, and the holding portion for holding the switch is engaged with the cap. Excellent strength against

Further, since it is not necessary to attach the cap to the holding portion, the manufacturing process is simplified, which is suitable for industrial mass production.

[Brief description of the drawings]

FIG. 1 is a perspective view and an exploded perspective view of a temperature switch according to a first embodiment of the present invention.

FIG. 2 is a perspective view and an exploded perspective view of a temperature switch according to a second embodiment of the present invention.

FIG. 3 is a perspective view and an exploded perspective view of a conventional temperature switch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Switch part 11 Reed switch 12 Temperature sensitive magnetic body 13 Permanent magnet 14, 15, 16 Lead 20, 23, 26 Resin cap 21, 24 Lead insertion groove 22, 25 Engagement claw 30, 32 Mounting bracket 31 Engagement hole 40, 41 Connection terminal 50 Caulking terminal 60 Lead wire 100 Switch body

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-205026 (JP, A) Japanese Utility Model Showa 51-103638 (JP, U) Japanese Utility Model Showa 53-83672 (JP, U) Japanese Utility Model Showa 55- 80225 (JP, U) Japanese Utility Model Showa 62-37849 (JP, U) Japanese Utility Model Showa 63-157140 (JP, U) Japanese Utility Model Utility Model 2-99535 (JP, U) Japanese Utility Model Utility Model 3-40740 (JP, U) Hikaru Hei 3-88244 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H01H 37/00-37/76

Claims (1)

(57) [Scope of request for utility model registration] 1. A switch unit having a lead that is electrically disconnected according to the environmental temperature, a cap unit that covers the lead, and a holding unit that holds the switch unit with the lead covered by the cap unit. In the temperature switch, the cap unit includes a terminal to which the lead is fixed, and the holding unit engages with the cap unit.