JPS63265539A - Motor - Google Patents

Abstract

PURPOSE:To simplify the fitting of a thermal fuse, by connecting the thermal fuse to a section between connecting housings in a state that the fuse is inserted into an insulating tube, and by fitting contact sections and both the ends of connecting housing sections firmly on each other with resin. CONSTITUTION:A thermal fuse 6 is set to cross the coil end 2 between connecting housings 5A in a state that the fuse is covered with an insulating tube 10. The insulating tube 10 is fitted so that the thermal fuse 6 may be positioned on the center of the tube, and both the end sections of the tube are fitted on the grooves of the respective connecting housings 5A, and the central section of the tube is permitted to come in contact with the coil end 2. The connected section of the thermal fuse 6 with a power-supply side lead wire 4 and a coil lead wire 3 is contained in the respective connecting housings 5A, and is resin-molded with ultraviolet-ray hardening resin 8, together with respective terminal pieces contained in respective housings 5. In this case, the contact section of the insulating tube 10 permitted to come in contact with the coil end 2 is also firmly fitted on the coil end 2 with the ultraviolet-ray hardening resin 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to small electric motors such as capacitor motors.

[Prior Art] This type of electric motor described above houses terminal pieces in which the coil lead wires coming out of the coil end are connected to each other and the coil lead wires and the power supply side lead wires are housed, and the terminal pieces are connected between the stator core 9 and the coil. Conventionally, a terminal block equipped with an insulating terminal block having an insulating function and a temperature fuse to prevent overheating to prevent coil burnout has a configuration as shown in FIG. 3. That is, the insulated terminal block 1 is supported on the side of the coil end 2 of the stator, and includes a terminal piece that connects the coil lead wires 3 coming out from the coil end 2, and the coil lead wire 3 and the power supply side lead wire. A box-shaped housing 5 is provided to house the terminal pieces connected to the terminal pieces 4 and 4, respectively. On the other hand, the temperature fuse 6 is connected to the insulated terminal block 1
It is fixed to the outer coil end 2 with a binding member such as a binding string 7.

Each terminal piece housed in each housing 5 is resin-molded with an ultraviolet hardening resin 8, and the temperature heater 6 and the power supply side lead wire 4 are connected outside the insulated terminal block 1.

[Problems to be Solved by the Invention] In the conventional electric motor described above, it is necessary to insulate the temperature fuse 6 and the coil end 2 with an insulating tube or insulating tape, and then tie the temperature fuse 6 to the coil end 2. However, there are problems in that assembly work is troublesome and time-consuming.

The present invention has been made to solve these conventional problems, and aims to provide an electric motor in which a temperature fuse can be easily installed, assembly work is easy, and time is not required.

[Means for Solving the Problems] The electric motor according to the present invention has a housing that individually accommodates each terminal piece, and each of the above-mentioned housings in an insulated terminal block that has a function of insulating the stator core and the coil. A connection housing for connecting the fuse is provided on the side, and both ends of the temperature fuse for overheat prevention inserted into the center of the insulating tube are connected at each of the above connection housings, and the center of the insulating tube is brought into contact with the coil end, and this contact portion and the connection housing portions at both ends of the insulating tube are fixed with resin.

[Function] In this invention, the temperature fuse for overheating prevention is not tied to the coil end, but is inserted into the insulating tube between the connection housings formed on the side of the housing that accommodates the terminal pieces of the insulated terminal block. It can be mounted by connecting the coil end, straddling the coil end so that the center contacts it, and fixing the contact portion and the connection housing portions at both ends with resin.

[Example] Both Fig. 1 and Fig. 2 show one embodiment of the present invention.The small electric motor of this example is also shown in Fig. 3 except for the configuration related to the temperature fuse, and will be explained first. Therefore, the same or corresponding parts have the same reference numerals as those in FIG. A box-shaped housing 5 is formed adjacent to the side of each housing 5 to separately house the terminal pieces connected to each other and the terminal pieces connected to the coil outlet wire 3 and the power supply side lead wire 4. The terminal block 1 includes an insulated terminal block 1 having a connection housing 5A, and a temperature fuse 6 for overheating prevention to prevent coil burnout. Insulated terminal block 1
is provided on the side of the stator core 9, and has a conductor connection function and a slot insulation function for insulating the stator core 9 and the coils. It is formed into a box shape, and has a groove structure for attaching a terminal piece, a cutout for drawing the coil lead wire 3,
It has a notch structure and a groove structure into which a plate that closes the outside in the radial direction is fitted. A terminal piece is housed in each housing 5, and a coil lead wire 3 coming out from the coil end 2 is connected to each terminal piece. The connection housing 5A is
They have a groove on the inner side wall, and one side has a notch cut out on the outside in addition to this groove.

The temperature fuse 6 is provided so as to straddle the coil end 2 of the connection housing 5A with an insulating tube 10 attached between the connection housings 5A. The insulating tube 10 is attached so that the temperature fuse 6 is located at its center, its both ends are fitted into the grooves of each connection housing 5A, and its center is brought into contact with the coil end 2. Connection portions between the temperature fuse 6 and the power source lead wire 4 and the coil outlet wire 3 are housed in each connection housing 5A, and are resin-molded with an ultraviolet curing resin 8 together with each terminal piece housed in each housing 5. It is buried in ultraviolet curing resin 8 within housing 5 . At this time, the contact portion of the insulating tube 10 brought into contact with the coil end 2 is also fixed to the coil end 2 with the ultraviolet curing resin 8.

Thus, the power supply side lead wire 4, the coil outlet wire 3, and the temperature fuse 6 are properly connected, and the assembly of the temperature fuse 6 with the insulating tube 10 covered thereon is completed.

Assembling the temperature fuse 6 and the coil end 2 is much simpler and takes less time than binding the temperature fuse 6 and the coil end 2 with a tying string as in the conventional method.

[Effects of the Invention] As is clear from the above description of the embodiments, the electric motor of the present invention has a housing that individually accommodates each terminal piece, and an insulated terminal that has a function of insulating the stator core and the coil. A connection housing for fuse connection is provided next to each of the above housings on the stand, and both ends of the temperature fuse for overheating prevention inserted into the center of the insulating tube are connected at each of the above connection housings, and the center of the insulating tube is connected to the coil end. Since this contact part and the connecting housing part at both ends of the insulating tube are fixed with resin, the temperature fuse for overheating prevention is not tied to the coil end, and the housing that houses the terminal piece of the insulating terminal block can be used. Connect by inserting the insulating tube between the connection housings formed on the side, straddle the coil end so that the center contacts it, and attach it by simply fixing the contact part and the connection housing parts at both ends with resin. can do. Therefore, an electric motor can be obtained in which the temperature fuse can be easily attached, and the assembly work is easy and time-saving.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the main parts of an electric motor as an embodiment of the present invention, FIG. 2 is an end view showing one end surface of FIG. 1,
FIG. 3 is a perspective view of the main parts of a conventional electric motor. In FIG. , 5A is a connection housing, 6 is a temperature fuse, 8 is an ultraviolet curing resin, and 10 is an insulating tube. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Masuo Oiwa (and 2 others) Figure 1 Figure 3

Claims (1)

[Claims] A terminal piece that is provided on the side of the stator core and connects the coil outlet wire coming out of the coil end and the power supply side lead wire, and a terminal piece that connects the coil outlet wire that becomes the intermediate joint of the coil are separately connected. In an insulated terminal block that has a housing for housing and has the function of insulating between the stator core and coil, a connection housing for connecting a fuse is provided next to each of the above housings, and a connection housing for overheating is inserted into the center of the insulating tube. An electric motor characterized in that both ends of the fuse are connected at each of the connection housings, the center of the insulating tube is brought into contact with the coil end, and this contact portion and the connection housing portions at both ends of the insulating tube are fixed with resin.