JPH0297254A - Thermal fuse fixing device - Google Patents

Abstract

PURPOSE:To secure a wiring lead in contactless by fixing a thermal fuse and a lead wire for electrical connection at predetermined positions with respect to a coil. CONSTITUTION:The temperature sensitive section 12 of a thermal fuse 11 is held by the box section 6 of a body section 4 having rear side contacting with the front face of a coil 3. The temperature sensitive section 12 is secured, through a bottom face notch section 13, at a position separated by a predetermined distance from the coil 3. Consequently, stable relation is established between the heating temperature of the coil 3 and the operating temperature of the thermal fuse 11, and when the temperature of the coil increases to an unstable point the thermal fuse 11 functions without fail to interrupt power supply to the coil 3. Wiring leads 17 are bundled and secured with a binding band 20 to the body section 4 together with a cover section 5, and thereby the coating can be protected from damage due to contact at time of abnormal heating of the coil 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a thermal fuse mounting device for mounting a thermal fuse in close proximity to a stator coil.

Prior Art 2 -7 Generally, a temperature fuse is used as an overheat protection device for a motor.

Conventionally, this type of temperature fuse mounting device has a structure as shown in FIG. In other words, the temperature fuse 61
2 and a pair of conductive wires 53 drawn out from both ends thereof. To this conductive wire 53, a lead wire 56 for connection with the coil (coil) V55 of the stator 64 is connected to one side, and a relay lead wire 57 connected to a power cord is connected to the other side through connectors 58. There is. and the temperature sensing section 62
After inserting the conductive wire 63 into the electrically insulating tube 59, the conductive wire 63 is fixed to the coil/1156 with hemp thread 6o, thereby fixing the temperature-sensing section 52 close to the coil 55. After inserting the lead wire 66 into the carp/L'55, the lead wire 61, and the electrically insulating tube 62, the hemp thread 63
The structure is such that it is fixed on the coil.

Problems to be Solved by the Invention In such a conventional configuration, the temperature sensing portion 5 of the temperature fuse 51
2 is inserted into the electrically insulating tube 69, and then fixed on the 37,-7 carp) v65 with hemp thread 60,
The temperature sensing part 52 is inside the electrically insulating tube 59/1155
Coil 55 may be installed at a location far away from
Even if the temperature rises to an abnormally high temperature, the operation of the temperature fuse 51 is delayed, resulting in an unsafe situation. In addition, after attaching the connectors 58 to the conductive wires 53 at both ends of the temperature-sensing section 52, they can be inserted into the electrically insulating tube 69, and after connecting the connecting lead wire 56 and the coil 55, they can be inserted into the electrically insulating tube 62, and the hemp thread 60.63 is difficult to work with, such as being tied on top of the carp/1156, and the installation of the thermal fuse and lead wire causes variations in position, resulting in unsafe conditions such as changes in the temperature sensitivity of the thermal fuse and contact between the lead wire and the coil. This had the problem of causing problems.

SUMMARY OF THE INVENTION An object of the present invention is to provide a temperature fuse attachment device that allows a temperature fuse and an electrical connection lead wire to be attached to a coil in a fixed position, reliably and easily.

Means for Solving the Problems In order to solve this problem, the present invention has a main body portion extending downwardly with a plurality of claws that fit into the slots of the stator, and a lid portion covering the main body portion, The main body portion includes a box portion that accommodates a temperature fuse, an opening provided directly below a temperature sensing portion of the temperature fuse, and a plurality of terminals for connecting conductive wires of the temperature fuse and wiring lead wires. The main body comes into contact with the upper surface of the coil of the stator, and the lid wire is fixed with a binding band that binds the main body and the lid together.

Function With this configuration, the main body can be easily and securely fixed by inserting the claws between the stator and the coil, and the temperature sensing part of the temperature fuse can be installed in the bottom cutout of the box part of the main body of the device. The wiring lead wire is close to the facing coil and is bundled together with the main body and the lid, so it does not come into contact with the coil.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 6. As shown in the figure, the stators 51, -71 of the motor are provided with a plurality of slots 2 on the inner peripheral side, and a coil/I/3 is wound around the slots 2. The temperature fuse installation device is composed of a main body part 4 made of synthetic resin having electrical insulation properties and a lid part 5 covering the main body part 4.

The main body part 4 has a flat part 9, a flat claw part 10 fitted into the slot 2 at the lower end of the flat part 9, and a box part in which a temperature fuse 11 is held. 6 and
A plurality of protrusions 8 are integrally formed, and each protrusion 8 holds a terminal plate 7 for electrical connection. By fitting the claw portion 10 into the slot 2, the main body portion 4 is fixed to the stator 1. A bottom notch 13 for heat transfer is provided at the center of the bottom of the box body 6, and a pair of top notches 14 are provided at the top of the box 6, from which the conductive wire of the temperature fuse 11 is connected. 16 is pulled out and connected to one end of the terminal board 7. Wiring lead wires 1 are connected to the other end of the terminal plate 7, held by the structure 18 of the lid 5, and then bundled together at the center of the lid 5. This wiring wire 17 is connected to the lid part 6 through e7, a pair of through holes 19 provided therein, and the box body part 6 of the main body part 4.
They are integrally fixed to binding bands 20 that pass through the upper surface notches 14 of the .

In the above configuration, the temperature sensing part 12 of the temperature fuse 11 is held in the box part 6 of the main body part 4, and the back side of the main body part 4 is provided with the coil 3.
Since the temperature sensing part 12 is in contact with the surface of the carp/l/3, the temperature sensing part 12 is fixed at a constant distance from the carp/l/3 via the bottom cutout part 13. Therefore, the heating temperature of the coil 3 and the temperature fuse 11 are
Since a stable relationship is obtained for the operating temperature of Koi/I
/3 reaches an unsafe high temperature, the temperature fuse 11 always operates to cut off the power to carp)v3. In addition, the wiring lead wires 17 are bundled together and then fixed to the main body 4 together with the cover 5 using a binding band 2o, thereby preventing damage to the sheathing due to contact when the coil 3 generates abnormal heat. be able to.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, a temperature fuse is attached to a box portion having a bottom cutout on the bottom surface of the main body portion, and a claw portion of the main body portion is connected to a sutake and a slot. The installation work is easy by inserting the back side of the main body into contact with the coil and fixing it, and then bundling the lead wires on the lid and binding them together with the main body and the lid. It is possible to realize an excellent temperature fuse mounting device that can be fixed at a constant interval and can also be fixed without touching the lead wire for wiring.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the assembled state of a temperature fuse installation device according to an embodiment of the present invention, Fig. 2 is a perspective view of the temperature fuse attached to the main body, and Fig. 3 is a perspective view of the lid. 4 is an enlarged perspective view of the main part of the box, FIG. 5 is a perspective view of the temperature fuse, and FIG. 6 is a perspective view showing the assembled state of a conventional temperature fuse mounting device. 1...Stator, 2...Slot, 3
...Coil, 4...Body part, 5...Lid part, 6...Box body part, 10...Claw part, 11...
・Temperature fuse, 12...Temperature sensing part, 13...
・Opening part (bottom notch part), 15... Conductive wire, 1
Finished... Lead wire, 20... Binding belt.

Claims (1)

[Claims] It has a main body part that extends downwardly with a plurality of claw parts that fit into slots of the stator, and a lid part that covers this main body part, and the main body part has a box part that accommodates a thermal fuse, and a box part that accommodates a thermal fuse. The body part is provided with an opening provided directly below the temperature sensing part and a plurality of terminal plates for connecting the conductive wire of the thermal fuse and the wiring lead wire, and the main body part is in contact with the upper surface of the coil of the stator, and the main body part is in contact with the upper surface of the coil of the stator. In the thermal fuse mounting device, the lead wire is fixed with a binding band that binds the main body part and the lid part together.