JP3414932B2 - Motor winding terminal block - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding processing terminal block for a small electric motor used for driving a fan such as a fan or a ventilation fan.

[0002]

2. Description of the Related Art Heretofore, a winding processing terminal block for an electric motor of this type has been known as disclosed in Japanese Patent Laid-Open No. 5-137286.

The winding processing terminal block of the electric motor will be described below with reference to FIG. As shown in the figure, the stator core 101 is integrally molded with a resin that insulates the end face and the slot. The shape of the molded resin is the cylindrical portion 105 located on the inner peripheral side of the stator iron core 101,
A columnar guide portion 103 for pressing and holding the outer peripheral portion of the first winding 102 and a disk portion 104 for mounting the pin terminal 106 at a position below the upper end surface of the cylindrical portion 105 are provided.

[0004]

DISCLOSURE OF THE INVENTION In such a conventional winding processing terminal block of an electric motor, the disk portion 104 is a cylindrical portion 105.
Since it is located below the upper end face of the motor, the axial dimension of the electric motor does not become relatively high, but a separate molded resin part must be used for the arrangement of the overheat prevention device and the lead wire and electrical connection. Therefore, it is required to reduce the number of parts and assemble more easily.

The present invention solves the above-mentioned problems of the related art. One component can be shared by having many functions, and the assembly work is easy and high quality is achieved. A first object is to provide a winding processing terminal block for an electric motor that can be realized.

A second object is to enable attachment of two kinds of overheat prevention devices having different shapes without using separate parts.

A third object is to make it easier to mount the overheat prevention device.

A fourth object is to suppress the axial dimension. Further, a fifth object is to share the parts in accordance with the coil end size of the winding.

A sixth object is to surely avoid contact between the terminal wire of the winding and the lead wire to improve the quality.

A seventh object is to facilitate the work of drawing the winding terminal wires.

[0011]

In order to achieve the above-mentioned object, a winding processing terminal block for an electric motor according to the present invention is mounted inside a coil end of a winding and has a plurality of terminal insertion holes for arranging the terminals. An annular disc portion having, and extending in a brim shape in the outer peripheral direction of the disc portion, a substantially trapezoidal device mounting portion for holding an overheat prevention device, and extending in a brim shape in the outer peripheral direction of the disc portion, A binding portion for fixing the lead wire and a plurality of fixing legs extending below the disk portion and abutting against the end surface of the tooth portion of the stator iron core are integrally molded with resin.

According to the present invention, a winding processing terminal block for an electric motor, which can be shared by giving more functions to one component, can be easily assembled and can realize high quality. can get.

According to another means, the device mounting portion has a rising portion from the disk portion, a single columnar first holding portion at the center of the upper surface, and a stator iron centered around this first holding portion. A pair of second holding portions is provided upright at a position on the inner side in the core radial direction.

According to the present invention, a winding processing terminal block for an electric motor can be obtained which enables mounting of two types of overheat prevention devices having different shapes without using separate parts.

Another means is to provide an R-shaped notch at the root of the first holding portion on the upper surface of the device mounting portion on the outer side in the radial direction of the stator iron core.

According to the present invention, a winding processing terminal block for an electric motor can be obtained which can facilitate the work of mounting the overheat prevention device.

According to another means, the binding portion for fixing the lead wire has a rising portion from the disk portion, is positioned between adjacent windings of the outer winding, and the tip of this binding portion is located on the winding side. It is intended to be inclined.

Further, according to the present invention, a winding processing terminal block for an electric motor can be obtained in which the axial dimension can be suppressed.

According to another means, the plurality of fixed legs extending below the disk portion are of two types of lengths, long and short, and a first fixed leg having a length of two or more, and two fixed legs. The second fixed leg having the above short length is used.

According to the present invention, it is possible to obtain a winding processing terminal block for an electric motor, which corresponds to the coil end size of the winding and can be shared in parts.

[0021] Another means is to form an escape groove for the winding terminal wire having an inverted L shape from the outer peripheral surface of the disk portion toward the terminal insertion hole, and a space below the escape groove. The lengthwise portion of the escape groove extending in the radial direction is such that the distance from the terminal insertion hole increases toward the inner circumference.

According to the present invention, it is possible to obtain the winding processing terminal block of the electric motor, which can surely avoid the contact between the winding terminal wire and the lead wire and improve the quality.

Another means is to provide a circular hole in the center of the longitudinal portion of the escape groove extending in the radial direction of the disk portion.

Further, according to the present invention, a winding processing terminal block of an electric motor can be obtained which can facilitate the work of drawing the winding terminal wires.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is directed to an annular disc portion having a plurality of terminal insertion holes for arranging terminals, which is mounted inside a coil end of a winding to be inserted into a stator iron core, and the disc portion of the disc portion. A substantially trapezoidal device mounting part that extends in a flange shape in the outer peripheral direction and holds the overheat prevention device, a binding part that extends in a flange shape in the outer peripheral direction of the disk part, and fixes the lead wire, and the disk part. A plurality of fixing legs that are integrally formed of resin and that abut on the stator iron core, and that are attached to the upper part of the winding through the device mounting portion with an overheat prevention device. It has an effect that the arrangement of the lead wire and the electrical connection with the winding can be performed on one component.

Further, the device mounting portion has a rising portion from the disk portion, one columnar first holding portion at the center of the upper surface, and the first holding portion as a center in the radial direction of the stator iron core. A pair of second holding parts are erected at a more inner position, and a small shape of the overheat prevention device can be held by the first holding part, and a temperature holding device having a larger shape than this can be used. The ascent prevention device has an effect of cutting off the first holding portion and then sandwiching it by the second holding portion.

Further, since the R-shaped notch is provided at the root of the first holding portion on the outer side in the radial direction of the stator iron core, the first holding portion can be easily cut off.

Further, the binding portion for fixing the lead wire has a rising portion from the disk portion, is located between the adjacent windings of the outer winding, and the tip of this binding portion is inclined to the winding side. Therefore, even when the number of lead wires is large, by binding at an inclined position,
It has the effect that the axial dimension does not become extremely large.

The plurality of fixed legs extending below the disk portion are of two kinds of lengths, short and long, and the first fixed leg having a length of two or more and the length of two or more. Has a short second fixed leg, and when the coil end dimension is large, the first fixed leg is brought into contact with the stator iron core to hold the position, and conversely, when the coil end dimension is small, this First
After cutting off the fixed leg, the second fixed leg is brought into contact with the stator core to hold the position.

Further, there is formed an escape groove for the winding terminal wire having an inverted L shape from the outer peripheral surface of the disk portion toward the terminal insertion hole, and a space is formed below this escape groove, and the diameter of the escape groove is formed. The longitudinal portion extending in the direction has a larger distance from the terminal insertion hole toward the inner circumference, and has an effect that the winding terminal element wire can be arranged on the lower surface of the disk portion through the escape groove.

Further, a circular hole is provided substantially at the center of the longitudinal portion of the escape groove extending in the radial direction of the disk portion, and when the terminal wire of the winding is routed to the lower surface of the disk portion, that is, below the escape groove, A jig or the like can be inserted through the circular hole so that the winding terminal wire can be released and easily pushed down below the groove.

[0032]

【Example】

(Embodiment 1) As shown in FIGS. 1 and 2, the winding processing terminal block 4 mounted on the inner peripheral side of the inner winding 2 and the outer winding 3 inserted into the stator core 1 is a terminal. An annular disk portion 5 having a plurality of terminal insertion holes 10 for arranging (not shown)
A device mounting portion 6 having a substantially trapezoidal shape for mounting an overheat prevention device, a binding portion 7 for fixing a lead wire (not shown), and a plurality of fixing legs 8, 9 abutting on the stator core 1. The device mounting portion 6 is integrally molded with an insulating resin, has a rising portion 11a from the disc portion 5, extends in the outer peripheral direction of the disc portion 5 in a brim shape, and the binding portion 7 also has the disc portion 5 similarly. Has a rising part 11b extending from the disk to the outer peripheral direction of the disk part 5 in the form of a brim, and the fixed legs 8 and 9 are arranged below the disk part 5.

In the above structure, when the winding processing terminal block 4 is mounted so as to be pushed down toward the inner peripheral side of the inner winding 2, the fixed legs 8 and 9 are brought into contact with the stator iron core 1 and the positions thereof are held, so that the apparatus is mounted. The portion 6 escapes the coil end by the rising portion 11a and is located on the upper surfaces of the inner winding 2 and the outer winding 3. Similarly, the bundling portion 7 also escapes the coil end by the rising portion 11b, and the inner winding 2 and the outer winding 3 It will be located on the top of line 3.

(Embodiment 2) As shown in FIGS. 3 and 4, one first holding portion 12 is erected at the center of the substantially trapezoidal device mounting portion 6 for mounting the overheat prevention devices 19 and 20. In addition, two second holding portions 13 are erected on the inner side in the radial direction of the stator core 1 with the first holding portion 12 as the center.

In the above structure, in the case of the overheat prevention device 19 having a small shape, it is held and fixed on the upper surface of the device mounting portion 6 by the first holding portion 12, and the overheat prevention device 20 having a larger shape is used. In this case, a space can be secured by cutting off the first holding portion 12,
The holding portion 13 holds and fixes the upper surface of the device mounting portion 6.

(Embodiment 3) As shown in FIG. 5, an R-shaped cut is formed at the outer radial base of the stator core 1 of the first holding part 12 of the holding parts standing on the device mounting part 6. This is a configuration in which the notch 14 is provided.

In the above structure, the first holding part 12 can be easily removed without using the second holding part 13 without using a special tool or device.

(Embodiment 4) As shown in FIGS. 6 and 7, the binding portion 7 for fixing the lead wire is extended in the form of a brim in the outer peripheral direction via the rising portion 11b from the disk portion 5,
Of the windings inserted in the stator core 1, the position of extension is
The outer winding 3 is located between adjacent windings, and the tip of the binding portion 7 is inclined from the vicinity of the inner coil 2 where the coil end is released to the stator iron core 1 side by an angle P.

In the above structure, the binding portion 7 is the outer winding 3
Since it is located in the valley, there is no influence of contact with the coil end even if the tip of the binding portion 7 is inclined, and even if a plurality of lead wires are fixed near the tip of the binding portion 7 with a fastening band or the like, The height of the fastening band can be made equal to the height dimension of the coil end.

(Embodiment 5) As shown in FIG.
The first fixed leg 8 having a length of H and a length of h (H>
Three second fixed legs 9 each consisting of h) are extended in the circumferential direction at substantially equal intervals.

In the above-mentioned structure, when the coil processing terminal block 4 is mounted and the height of the coil end is large, the first fixed leg 8 is brought into contact with the end surface of the stator iron core 1 and the disk portion 5 is formed. It is possible to maintain the levelness of the upper surface of the. If the height of the coil end is small, first the first fixed leg 8
After removing all of them, the disk part 5 is pushed down toward the stator iron core 1 and the second fixing leg 9 is brought into contact with the end surface of the tooth part of the stator iron core 1 to keep the upper surface of the disk part 5 horizontal. it can.

(Embodiment 6) As shown in FIGS. 9 and 10, a sufficient width is provided in the vicinity of the plurality of terminal insertion holes 10 of the disk portion 5 so that the winding terminal wires 18 can pass radially from the outer peripheral surface. The inverted L-shaped escape groove 15 is provided, and the rectangular parallelepiped space 1 is sufficiently larger than the width of the escape groove 15.
7 is formed below the disk portion 5. Furthermore, escape groove 1
The longitudinal portion 21 extending in the radial direction of 5 is formed such that the distance between the escape groove 15 and the terminal insertion hole 10 increases as it goes from the outer periphery of the disk portion 5 toward the terminal insertion hole 10.

In the above structure, when the winding terminal wire 18 of the inner winding 2 or the outer winding 3 is passed through the escape groove 15 and routed toward the terminal insertion hole 10, either the right or left direction of the escape groove 15 Even if it is attempted to pull it around, the winding terminal wire 18 is reliably stored in the space 17.

(Embodiment 7) As shown in FIG. 11, a jig 22 is inserted into the escape groove 15 formed in the radial direction from the outer peripheral surface in the vicinity of the plurality of terminal insertion holes 10 of the disk portion 5 in the approximate center thereof. A circular hole 16 is provided.

In the above structure, when the winding terminal wire 18 is pushed down below the escape groove 15 of the disk portion 5, a cylindrical jig 22 can be inserted into the hole 16 to facilitate the work.

[0046]

As is apparent from the above-described embodiments, according to the present invention, one component can be shared by having more functions, and the assembling work is easy and the quality is high. It is possible to provide a winding processing terminal block for an electric motor, which is effective in realizing the above.

Further, it is possible to provide a winding processing terminal block for an electric motor, which has the effect of enabling mounting of two types of overheat prevention devices having different shapes without using separate parts.

Further, it is possible to provide a winding processing terminal block for an electric motor, which is effective in facilitating the work of mounting the overheat prevention device.

Further, it is possible to provide a winding processing terminal block for an electric motor, which is effective in suppressing the axial dimension.

Corresponding to the coil end size of the winding,
It is possible to provide a winding processing terminal block for an electric motor, which is effective in sharing parts.

Further, it is possible to provide a winding processing terminal block for an electric motor, which is effective in surely avoiding contact between the winding terminal wire and the lead wire and improving quality.

Further, it is possible to provide a winding processing terminal block for an electric motor, which has an effect of facilitating the work of drawing the winding terminal wire.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a mounted state of a winding processing terminal block of an electric motor according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing an entire winding processing terminal block of the electric motor of the first embodiment.

FIG. 3 is a perspective view showing a state in which a small-sized excessive temperature rise prevention device is attached to the device attachment portion of the second embodiment.

FIG. 4 is a perspective view showing a state in which a large-sized overheat prevention device is attached to the device attachment portion of the second embodiment.

FIG. 5 is a cross-sectional view showing the position and shape of a holding portion of a device mounting portion according to the third embodiment.

FIG. 6 is a perspective view showing a positional relationship between a binding portion and windings according to the fourth embodiment.

FIG. 7 is a cross-sectional view showing a positional relationship between a binding portion and windings according to the fourth embodiment.

FIG. 8 is a cross-sectional view showing a length relationship of fixed legs of the fifth embodiment.

FIG. 9 is a perspective view showing the relationship between the escape groove and the terminal insertion hole according to the sixth embodiment.

FIG. 10 is a plan view showing the arrangement of winding terminal wires with respect to the escape grooves of the sixth embodiment.

FIG. 11 is a cross-sectional view showing the relationship between the winding terminal wire and the relief groove hole of the seventh embodiment.

FIG. 12 is a cross-sectional view showing a configuration of a winding processing terminal block of a conventional electric motor.

[Explanation of symbols]

1 Stator iron core 2 inner winding 3 outer winding 4 winding processing terminal block 5 disk part 6 Device mounting part 7 binding part 8 1st fixed leg 9 Second fixed leg 10 terminal insertion hole 11a, 11b rising part 12 First holding unit 13 Second holding unit 14 notches 15 escape groove 16 holes 17 spaces 18 winding wire 19, 20 Overheat prevention device 21 Long part 22 jig P Tilt angle of tip of binding section H, h Length of first and second fixed legs

Claims (7)

(57) [Claims] 1. An annular disc portion having a plurality of terminal insertion holes for arranging terminals, the annular disc portion being mounted inside coil ends of an inner winding and an outer winding to be inserted into a stator iron core. A substantially trapezoidal device mounting portion that extends in a brim shape in the outer peripheral direction and holds the overheat prevention device, and a binding portion that extends in a brim shape in the outer peripheral direction of the disk portion and fixes a plurality of lead wires, A winding processing terminal block for a motor, which is formed by integrally molding a plurality of fixed legs that extend below the disk portion and contact the stator iron core with resin. 2. The device mounting portion has a rising portion from the disc portion, and has a single columnar first holding portion at the center of the upper surface, and a stator core radial direction around the first holding portion. The winding processing terminal block for an electric motor according to claim 1, wherein a pair of second holding portions are provided upright at a position on the inner side. 3. The winding processing terminal block for an electric motor according to claim 1, wherein an R-shaped notch is provided at a root of the first holding portion on the upper surface of the device mounting portion on the outer side in the radial direction of the stator iron core. 4. The binding portion for fixing the lead wire has a rising portion from the disk portion, is located between the adjacent windings of the outer winding, and the tip of this binding portion is inclined to the winding side. The winding processing terminal block of the electric motor according to claim 1. 5. A plurality of fixed legs extending below the disk portion are of two types of length, short and long, and a first fixed leg having a length of two or more and a length of two or more. The winding processing terminal block for an electric motor according to claim 1, comprising a second fixed leg having a short length. 6. An escape groove for an inverted L-shaped winding terminal wire from the outer peripheral surface of the disk portion toward the terminal insertion hole and a space below the escape groove are formed, and the diameter of the escape groove is formed. The winding processing terminal block for an electric motor according to claim 1, wherein the longitudinal portion extending in the direction has a larger distance from the terminal insertion hole toward the inner circumference. 7. A circular hole is provided substantially at the center of the longitudinal portion of the relief groove extending in the radial direction of the disk portion.
Winding terminal block for the described motor.