JPS60213235A - Stator for motor - Google Patents

Abstract

PURPOSE:To facilitate the assembling of a stator for a motor by laminating cores in which notched portions are formed at the outer periphery by aligning the notched portions of the cores so that grooves are formed on the outer periphery of the laminated cores, and fixedly engaging rods within the grooves. CONSTITUTION:Cores 6 in which two notched portions 7 are formed at the outer periphery are laminated by aligning the notched portions 7 of the cores so that the grooves are formed on the outer periphery to form a laminated core. Rods 8 are engaged within the grooves fixedly secured by a spot welding 10 at both ends of the core to construct a stator 9. The rods 8 are engaged so that the both ends are slightly extended from the stator 9. Further, holders 12a, 12b are engaged from the both ends of the stator 9 by inserting the both ends of the rods 8 into the grooves 11a, 11b, respectively, and the ends of the rods 8 are fixedly coupled by spot welding 14 with the holders 12a, 12b, respectively. Thus, the assembling can be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electric motor stator that simplifies the stacking of cores by attaching holders from both sides to the stator in which the cores are stacked.

Structure of a conventional example and its problems An example of the structure of a conventional electric motor stator is shown in FIG.
The welded parts 2a and 2b for forming the stator 6 have bearings inserted therein to support the rotor, and the holders 3 sandwich the stator 5 from both sides, and the holders 2a and 2b are welded parts 2a and 2b.
A spigot processing part 4 into which the stator is fitted and fixed is a stator winding wound around the stator 6.

However, in the above configuration, in order to form a stator in which the cores are aligned and stacked, two or more welds are required at least in the stacking direction. Therefore, there was a problem in that it took a lot of effort and cost to assemble. In addition, in order to fix the boulders into which the bearings supporting the rotor are inserted, on both sides of the stator, pilot machining parts are provided at both ends of the stator, the holders are inserted, and the stator and holder are joined and fixed by welding or adhesive. Ta. This spigot machining has the problem of being very difficult because there is a weld to join the cores together and because thin cores are laminated. Now, electric motors are currently used in information-related equipment, They are widely used in a wide variety of applications such as factory automation equipment, small home appliances, and labor-saving equipment, and as a result, the performance and shapes of motors that are suitable for the specifications have also become more diverse.

Electric motor 1^j Stator is a small-diameter and long electric motor stator, but there are serious problems in the joint circumferential method when stacking the cores to form the stator and the method for attaching the holder to the stator. It is a major obstacle in reducing manufacturing man-hours and automating it.

Purpose of the Invention The present invention eliminates the above-mentioned conventional drawbacks by +Vt,
This simplifies the stacking of cores and the attachment of the holder to the stator stacked with cores from both sides.

Structure of the Invention A laminated core in which cores having a plurality of cutouts on the outer periphery are stacked so that the cutouts are aligned to form a groove, and a laminated core that is longer than the laminated core and can be fitted into the groove;
Connect and fix with welding agent or adhesive in step 2, and 4J
1 [A rod for forming a layer core into a stator, and two boulders that sandwich the stator from both sides and have grooves that can fit into the frame, and are connected to the rod by welding or adhesive, etc. This simplifies stacking the cores and attaching the holder to the stay from both sides 1111, which is extremely advantageous in terms of assembly.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 to 5. In Fig. 2, 6 is made by pressing a silicon steel plate to have two cutouts 7 on the outer periphery.
It is a core with J removed. In FIG. 3, 8 is a bar. In FIG. 4, 9 indicates the front layer 6. The layered cores 6 are stacked so that the cutout portions 7 are aligned to form a groove, the frame 8 is fitted into this groove, and spot welding 10 is performed at both ends of the layered core. The stator is connected and fixed to prevent the stacked cores 6 from coming apart. Ail Memoir 8
is longer than the stator 9, and both ends of the rod 8 are connected to the stator 9.
1. This is a groove 11a that can be fitted to both ends of the frame 8.

11b and into which bearings are inserted.
This is because 2a and 12b serve as a medium for positioning and fixing the stator 9 in a cage. 13 is a stator winding wound around the stator 9. FIG. 6 is a perspective view of a completed electric motor fixing-f according to an embodiment of the present invention. Boulders 128, 12b are attached to the stator 9 from both sides, and grooves 11a are formed at both ends of the rod 8.

11b and both ends of the fitting rod 8 and the boulder 1.
2a and 12b are joined and fixed by spot welding 14.

As described in (1) below, according to this embodiment, cores having two cutouts on the outer periphery are aligned and stacked so that the cutouts form two grooves, and the grooves are provided with a simple wire. It also has strong strength to hold the laminated core. The stator is sandwiched between two holders from both sides, and since there is a groove on the holder side and an end of the reed, it is easy to determine the position of the two holders, and the end of this rod and the boulder It is possible to firmly connect and fix by spot welding 1. In this example, the core 6 has two cutouts 7 on the outer periphery, but depending on the shape of the core, there may be two or more cutouts 7. Good too. When stacking the cores, fit the grooves 8 into the grooves and weld the grooves 7) at both ends of the stacked cores.
Although the stator 9 was formed using the above method, spot welding may be performed at both ends and other locations, or an adhesive may be used for the joining method. Also, the spot welding point 14 between the stator 9 and the boulder 128° 12b is fixed with the rod 8.
Although the ends of the stator 9 and the grooves 11a and 11b of the holder are shown here, any contact area between the stator 9 and the holders 12a and 12b may be used.Although the joining method is 14 by welding, it goes without saying that adhesive may also be used. stomach.

As described above, the invention is based on a laminated core in which cores with a plurality of cutouts on the outer periphery are stacked so that the cutouts are aligned to form a groove, and a core layer that fits into the groove longer than the registered layer core. The stator can be formed by firmly and easily connecting and fixing the laminated core with the laminated core at two or more places by welding or adhesive using a possible rod, and the stator and holder are connected by using the ends of the rods. It can be easily positioned by fitting into the groove of the holder, and can be firmly connected by welding or adhesive, which has great practical effects.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the configuration of a conventional electric motor stator, Fig. 2 is a perspective view showing the outer peripheral part in an embodiment of the present invention, and Fig. 4 is a perspective view showing a motor stator in an embodiment of the present invention. FIG. 5 is a swimming diagram showing the completed state of the electric motor stator in the embodiment of the present invention. 7...Cutout part, 8...Bar, 10...
...Spot welded part, 11 a, 1 l b--
Groove, 12a, 12b...Holder, 14...
...Spot welding area. Name of agent: Patent attorney Toshio Nakao
1 Figure 3

Claims (1)

[Claims] A laminated core having a plurality of cutouts formed on the outer periphery and stacked so that the cutouts are aligned to form a groove; and a laminated core that is longer than the laminated core and can be fitted into the groove; A rod for forming the laminated core into a stator by joining and fixing the laminated core by welding or adhesive at the above points, and a groove for sandwiching the stator from both sides and fitting into the frame, A motor stator consisting of two holders joined by welding or adhesive.