JPS6339436A - Fixing device for leader line of motor - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lead wire fixing device 1'T for an electric motor, and more specifically, it is made by winding a stator winding directly around a stator core using a winding machine. 1゜ [Second East, 1st row] Relating to a device for fixing a lead wire of an electric motor Generally, a lead wire as an external wire is soldered to the fixed F wire of a motor, but in that case, the connection part is soldered. It needs to be fixed in place. For this reason, in the past, for example, Utsuka Sho 5! ]-159] As disclosed in No. 64, a storage part for inserting the connecting part of the lead-out wire fixing r and the winding is formed in a holder installed over the yoke part of the stator core, and this storage part is It is inserted into the slot after the fixed-r winding is wound. Moreover, as a simpler method, an insulating tube is placed over the connecting portion of the lead wire and the stator winding, and this is attached to, for example, a wire guide with an insulation lock tie or the like.

[Problem that the invention seeks to solve]

However, according to those using the former holder, there is no problem if the space factor of the winding in slot 1 is small, but if the space factor is large, the surplus space in slot 1 becomes narrow. There is a drawback that there is no place to insert the storage part of the holder. On the other hand, in the latter method, it takes time and effort to cover with an insulating tube and tie an insulator tie, resulting in poor productivity. The present invention aims to solve these conventional drawbacks.

[Means for solving problems]

In order to achieve the object 1-6, the present invention provides a cylindrical bracket 1 in which a predetermined portion of the side surface is formed flat, and a substantially arcuate gap is created between the cylindrical bracket 1 and the inner wall surface. An electric motor having a stator core comprising a pair of end plates made of an electrically insulating material attached to both ends of the stator core, and a camp for fixing a lead wire to the end plate, and one end plate has a camp for fixing a lead wire. An engaging claw piece provided at a predetermined portion on the inner edge side, and a drawer bored at the rear side of the engaging claw piece so as to communicate with the gap. A wire IIV through hole is formed in the cap, and the cap is provided with a connection part storage hole that stores a part of the connection between the lead wire and the stator winding, and an engagement member that engages with the engagement claw piece. r, the cap is attached to the end plate 1- through the engaging member 1 and the engaging claw so that the storage hole 1 is eccentric with respect to the insertion hole. Appendix 1-J
It is characterized by being able to be used.

[For production]

With the above-described configuration, by attaching the cap to the end plate-1-, the lead-out line is firmly held in a bent state of 771 between the notebook insertion hole a and the connecting portion storage hole.

〔Example〕

The invention will now be described in detail with reference to embodiments illustrated in the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a stator core formed by laminating magnetic plates punched into a predetermined shape. In this case, the stator core 1 has a rectangular shape with a predetermined portion of its side surface being a flat surface L Il, and when it is housed in the cylindrical bracket 4, an arcuate gap G is formed between it and the inner wall surface thereof. Also, although only a portion of it is shown in Figure 2, this stator core]
For example, six blade portions 2 and the same number of slots 1 to 3 are provided. At both ends of the stator core 1, end plates 5a and 5b made of an electrically insulating material such as synthetic resin are provided. Referring also to FIG. 3, each end plate 5a,
5b includes winding guides 6a and 6b for preventing wire leakage when winding the stator winding around the stator core 1 using a winding machine.
and fluid gland guides F7a and 7b for guiding the fluid glands are formed, respectively. In addition, each end plate 5 a y 5
b is an insulating cover 8a inserted into the slot 3 along its inner wall surface.

81) and leg plates 9a, 9b formed to straddle the yoke portion of the stator core 1 between the insulating covers 8a, 8b.

In one end plate 5a, a claw 11 is formed at the upper end of a predetermined wire transfer kite 7a.For convenience of explanation, this predetermined wire transfer guide 7d will be hereinafter referred to as an engaging claw piece.This engaging claw For example, three lead wire insertion holes 10 are drilled in the back side of piece 7 th, which communicate with the gap G formed between the qi flat curve 1a of the stator core 1 and the bracket 4. Corresponding to the insertion holes IO, three lead wire engagement grooves 12 are similarly formed in the other end plate 5b.One end of each lead wire 13 is drawn out to the end plate 5a side through the insertion hole 10. Then, they are connected to the lead portions of the stator windings 14, respectively, and fixed to the end plate 5a by caps 15.

Referring also to FIG. 4, the cap 15 is connected to the lead line 1.
For example, three connection portion storage holes 16 are provided to accommodate connection portions between the stator winding 14 and the stator winding 14. A cutout groove 17 for laterally inserting the stator winding 14 is connected to the lower end of each of the connecting portion storage holes 16. Further, a U-shaped engagement frame 18 is provided on the side surface of the cap 15 to engage with the engagement claw piece 7a. That is, the cap 15 is attached to the end plate 5a via the engagement frame 18 and the engagement claw piece 7a, but in this case, the connection part storage hole 16 of the cap 15 is eccentric with respect to the insertion hole 10. As a result, the lead wire 13 is fixed in a bent state as shown in FIG. 3 between the insertion hole 10 and the connecting portion housing hole 16. In this embodiment, in order to further strengthen this fixed state, guide ribs 19 are formed on the end plate 5a to restrict the attachment position of the lower end of the cap 15, and on both sides of the cap 15, guide ribs 19 are formed. A spacer 20.20 is formed to maintain a constant distance from the mating claw piece 17a.

Lead line 1 fixed by cap 15 as described above
The other end side of 3 is held in the engagement groove 12 of the end plate 5b, and when the stator core 1 is housed in the bracket 4, it is placed in the gap G formed between the stator core 1 and the bracket 4. 4, for example, through an opening 21 provided on the side surface thereof.

〔effect〕

As is clear from the description of the embodiments described above, according to the present invention, the lead wires are routed using the gap formed between the stator core and the bracket, and the stator windings are connected at the upper part of the end plate. Since the connection part is connected and fixed with a cap, there is no need to insert the connection part into the slot after winding the stator winding as in the conventional case, which means that the space factor of the stator winding can be adjusted easily. The lead line can always be securely fixed regardless of the situation. In addition, the fixing work is simply to put a cap on, and the workability is good and the effect is remarkable.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing an embodiment of the present invention, Fig. 2 is a plan view of the main part of the same embodiment, Fig. 3 is a sectional view of the main part of the embodiment, and Fig. 4 is the same as Fig. 1. FIG. 3 is a perspective view of the illustrated cap from a different direction than in the same figure; In the figure, 1 is a stator core, 1a is a flat surface, 2 is a 6-blade portion, 3 is a slot, 4 is a bracket, 5a and 5b are end plates, 6a and 6b are winding guides, and 7a and 7b are wire transfer guides. , 10 is a lead wire insertion hole, 11 is a claw, 12 is an engagement groove, 1
3 is a lead wire, 14 is a stator winding, 15 is a cap, 1
Reference numeral 6 designates a connection portion housing hole, 18 designates an engagement frame, 19 designates a guide rib, and 20 designates a spacer.

Claims (7)

[Claims] (1) In an electric motor having a stator core whose side surface is flat at a predetermined portion and which is housed in a cylindrical bracket with a substantially arcuate gap between the inner wall surface and the stator core, the stator core is attached to both ends of the stator core. It has a pair of end plates made of electrically insulating material and a cap for fixing a lead wire to the end plates, and one of the end plates has an engaging claw piece erected at a predetermined position on the inner edge side of the end plate. A lead wire insertion hole is formed at a position on the back side of the engaging claw piece so as to communicate with the gap, and the cap accommodates a connecting portion between the lead wire and the stator winding. The cap is provided with a connecting part housing hole that engages with the engaging claw piece, and an engaging member that engages with the engaging claw piece, and the cap allows the accommodation hole to connect to the insertion hole through the engaging member and the engaging claw piece. The lead wire is fixed in a bent state between the insertion hole and the storage hole, and is drawn out to the outside of the bracket through the gap. Features: Electric motor lead wire fixing device. (2) The electric motor lead wire fixing device according to claim (1), wherein the other end plate is formed with an engagement groove for engaging and holding the lead wire. (3) The electric motor lead wire fixing device according to claim (1), wherein a guide rib is formed on the outer edge side of the one end plate to regulate the attachment position of the cap. (4) The electric motor lead wire fixing device according to claim (1), wherein the engaging member is comprised of a U-shaped frame formed on a side surface of the cap. (5) In claim (1), the lead wire of the electric motor is characterized in that the cap is provided with a spacer that comes into contact with the back surface of the engaging claw piece and maintains a constant distance therebetween. Fixation device. (6) In claim (1), the end plate includes:
A leader wire fixing device for an electric motor, characterized in that a winding wire guide and a wire crossing guide are formed. (7) The electric motor lead wire fixing device according to claim (1) or (6), wherein the engaging claw piece also serves as a wire guide.