JP3414944B2 - 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 FIGS. 9 and 10.

As shown in the figure, the stator iron core 101 is integrally molded with a resin that insulates the end face and the slot. The shape of this molded resin is such that the cylindrical portion 105 located on the inner peripheral side of the stator iron core 101, the columnar guide portion 103 that presses and holds the outer peripheral portion of the first winding 102, and the upper portion of the cylindrical portion 105. The disk portion 104 to which the pin terminal 106 is attached is provided at a position below the end face.

[0005]

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.
Although it is located below the upper end surface of the motor, when it is press-fitted into the housing 107 having the throttle shape 108 for supporting the bearing, the axial dimension of the electric motor is finally determined by ensuring the insulation distance between the pin terminal 106 and the throttle shape 108. Has a problem in that a separately molded resin component must be used for the arrangement of the overheat prevention device, the wiring of the lead wire, and the electrical connection with the pin terminal 106. It is required that the size in the axial direction be made smaller and the number of parts be made smaller, so that the assembling can be performed more easily.

The present invention solves such a conventional problem, and aims at downsizing the axial dimension of the electric motor and at the same time providing more functions to one component.
A first object of the present invention is to provide a winding processing terminal block for an electric motor, which can realize easy assembly work.

A second object is to surely hold the lead wire arranged inside so as not to hinder the rotation of the rotor of the electric motor and to realize high quality.

A third object of the present invention is to facilitate the work of mounting the overheat prevention device and at the same time improve the quality of the winding by bringing the overheat protection device into close contact with the winding.

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

A fifth object is to suppress the axial dimension.

[0011]

In order to achieve the above-mentioned object, a winding processing terminal block for an electric motor of the present invention is mounted inside a position lower than the uppermost portion of the winding, and a plurality of terminals for arranging the terminals are arranged. An annular disk part with terminal insertion holes, a device mounting part that extends in a flange shape from the disk part toward the outer periphery on the upper part of the winding, and holds the overheat prevention device, and a collar part in the outer peripheral direction of the disk part. A plurality of fixing legs extending in a circular shape and fixing a plurality of lead wires, and a plurality of fixing legs extending below the outer peripheral edge of the disk portion and abutting the stator iron core. A first housing groove for housing a plurality of lead wires on the inner peripheral side of the insertion hole;
A plurality of second storage grooves are formed in the outer peripheral direction from the storage groove.

According to the present invention, by holding the lead wire below the upper surface of the disc portion, the axial size of the electric motor can be reduced.
In addition, a winding processing terminal block for an electric motor can be obtained in which one component has more functions and thus the assembly work can be facilitated.

Another means is to provide a plurality of brim-shaped locking portions extending from the inner peripheral edge of the first storage groove in the outer peripheral direction and a brim-shaped locking portion similarly extending in the inner peripheral direction from the outer peripheral edge. It is formed individually.

Further, according to the present invention, there can be obtained a winding processing terminal block for an electric motor, which can be surely held so that the lead wire laid inside does not hinder the rotation of the rotor of the electric motor.

According to another means, the device mounting portion extending to the upper part of the winding has a rising portion from the disk portion, a retaining portion is provided below, and two end portions are substantially L-shaped from the outer peripheral direction. It has a notch.

According to the present invention, the work of mounting the overheat prevention device can be facilitated, and at the same time, the overheat prevention device can be closely attached to the winding to improve the quality. A processing terminal block is obtained.

Another means is to provide a second notch, which is narrower than the width of the notch, continuously at the innermost part of the notch having the substantially L-shape formed in the device mounting portion. .

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 form a recess on one side of the terminal insertion hole in the disk portion circumferential direction that is shallower than the depth of the terminal insertion hole.

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

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention has a plurality of terminal insertion holes which are mounted inside the lower and uppermost positions of an inner winding and an outer winding to be inserted into a stator iron core and in which terminals are arranged. An annular disc portion, a device mounting portion that extends in a flange shape on the inner and outer windings from the disc portion toward the outer periphery, and holds the overheat prevention device, and in the outer peripheral direction of the disc portion. It comprises a binding portion extending in a brim and fixing a plurality of lead wires, and a plurality of fixing legs extending below the outer peripheral edge of the disk portion and abutting on the stator iron core. A first accommodation groove for accommodating a plurality of lead wires on the inner peripheral side of the terminal insertion hole and a plurality of second accommodation grooves in an outer peripheral direction from the first accommodation groove are formed. It can be placed below the upper surface of the disk part, and the overheat prevention device is attached to the lower surface of the device mounting part in close contact with the winding. It has the effect that it is possible.

Further, a plurality of flange-shaped locking portions extending from the inner peripheral edge of the first storage groove toward the outer peripheral direction and a plurality of flange-shaped locking portions extending from the outer peripheral edge toward the inner peripheral direction are formed. Therefore, there is an effect that the lead wire is prevented from coming out of the storage groove even when the lead wire is unintentionally pulled by vibration during operation of the electric motor.

Further, the device mounting portion extending above the inner winding and the outer winding has a rising portion from the disk portion, a retaining portion is provided below, and two end portions are substantially L from the outer peripheral direction. It has a notch in the shape of a letter.When mounting the overheat prevention device from the outside in the space between the top of the winding and the device mounting part, the overheat prevention device is placed on the top of the winding. At the same time as closely contacting, the lead part of the overheat prevention device is approximately L
By advancing along the character-shaped notch, this lead portion has an effect that it can be held at the innermost part of the notch by an elastic action.

Further, a second notch narrower than the width of the notch is continuously provided at the innermost part of the notch of the substantially L-shape formed in the device mounting portion, and the shape is different. Even if the lead portion is equipped with a comparatively thin overheat prevention device, it has an effect that it can be held at the innermost portion of the second notch by the elastic action of the lead portion.

Further, a concave portion shallower than the depth of the terminal insertion hole is formed on one side of the terminal insertion hole in the circumferential direction of the disk portion, and after the lead wire or the lead wire of the winding is electrically connected to the terminal. By bending this terminal by about 90 °, it can be housed in the recess and placed below the upper surface of the disk.

[0026]

【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 7 for arranging, a device mounting portion 13 for mounting a device for preventing excessive temperature rise, a binding portion 8 for fixing a lead wire, and a plurality of portions for abutting on the stator core 1. The individual fixing legs 9 are integrally molded with insulating resin, and the device mounting portion 1
3 has a rising portion 13a from the disk portion 5 and extends in a flange shape in the outer peripheral direction of the disk portion 5, and the binding portion 8 also has a rising portion 8a from the disk portion 5, It extends in a brim shape in the outer peripheral direction, and further, the fixed leg 9 extends below the disk portion 5. Further, a first storage groove 10 for storing a plurality of lead wires is formed in an annular shape further inside the terminal insertion hole 7 of the disk portion 5, and the first storage groove 1 is formed.
A second housing groove 11 for housing at least one lead wire is formed from 0 to the terminal insertion hole 7.

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 outer peripheral surface of the disk portion 5 is lowered while being in contact with the inner winding 2, and the fixed leg 9 is fixed.
Is held in position by abutting on the stator iron core 1, and the device mounting portion 13 and the binding portion 8 are respectively attached to the rising portions 1
3a and 8a are positioned on the upper surfaces of the inner winding 2 and the outer winding 3, and the first storage groove 10 and the second storage groove 11 are located one step lower than the upper surface of the disk portion 5, and the wiring is provided here. The lead wire to be formed is located below the upper surface of the disk portion 5.

(Embodiment 2) As shown in FIGS. 3 and 4, similarly to the flange-shaped locking portion 12a extending from the inner peripheral edge of the first storage groove 10 formed in the disk portion 5 toward the outer peripheral direction. The locking portion 12b extends from the outer peripheral edge of the first storage groove 10 toward the inner peripheral direction.
It is a configuration in which and are extended.

In the above structure, even if some external force is applied to the plurality of lead wires 18 arranged in the first storage groove 10, the respective locking portions 12a and 12b cover the lead wires 18, The lead wire 18 is securely held and fixed without coming off from the first storage groove 10.

(Embodiment 3) As shown in FIGS. 5 and 6, the device mounting portion 13 has a rising portion 13a from the disk portion 5.
By having the inner winding 2 and the upper portion of the outer winding 3 extend in a brim-like shape, a protruding retaining portion 14 is provided below the device mounting portion 13, and the device mounting portion is provided. This is a configuration in which two substantially L-shaped notches 15 are formed at two positions on both ends of 13, that is, symmetrically with respect to the center line from the outer peripheral direction.

In the above structure, the overheat prevention device 19
Is inserted into the space between the device mounting portion 13 and the winding, the overheat prevention device 19 is securely held firmly on the upper portions of the inner winding 2 and the outer winding 3, and the lead portion 19a of the overheat prevention device 19 is held. Will be held at the back of the notch 15.

(Embodiment 4) As shown in FIGS. 5 and 7, symmetrically with respect to the center line of the device mounting portion 13, the two L-shaped notches 15 are continuously formed at the innermost portion of the notch 15 in the outer peripheral direction. The second notch 16 having a width smaller than the width of the notch 15 is provided.

In the above structure, the overheat prevention device 19
Even when the overheat prevention device 20 having a relatively thin lead portion 20a is attached to the device mounting portion 13, the overheat prevention device 20 is provided above the inner winding 2 and the outer winding 3. The second cutout 16 is securely held firmly
The lead portion 20a is securely held in the inner portion of the.

(Embodiment 5) As shown in FIG.
With respect to the terminal insertion hole 7 into which the terminal 6 is inserted and arranged, a recess 17 having a depth smaller than the depth of the terminal insertion hole 7 is provided on one side in the circumferential direction.

In the above structure, after the lead wire and the terminal wire of the winding are electrically connected to the terminal 6 by soldering or the like, the terminal 6 is bent toward the concave portion 17 side by 90 ° so that the upper surface of the terminal 6 is The position can be below the upper surface of the disk portion 5.

[0036]

As is apparent from the above embodiments, according to the present invention, it is possible to reduce the axial size of the electric motor and
It is possible to provide a winding processing terminal block for an electric motor, which has an effect of facilitating the assembling work by giving more functions to one component.

Further, it is possible to provide a winding processing terminal block for an electric motor, which is capable of reliably holding the lead wire internally laid so as not to hinder the rotation of the rotor of the electric motor and realizing high quality.

Further, the winding processing terminal block of the electric motor is effective in that the mounting work of the overheat prevention device can be made easier and at the same time, the overheat prevention device can be closely attached to the winding to improve the quality. Can be provided.

Further, it is possible to provide a winding processing terminal block for an electric motor, which has an effect that it is possible to mount 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 suppressing the axial dimension.

[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 plan view of a winding processing terminal block showing a state in which lead wires of Example 2 are wired.

FIG. 4 is a sectional view of a winding processing terminal block showing a disk portion of the second embodiment.

FIG. 5 is a perspective view showing a shape of a device mounting portion according to the third and fourth embodiments.

FIG. 6 is a plan view showing a state in which an overheat prevention device according to the third embodiment is attached.

FIG. 7 is a plan view showing a state in which an excessive temperature rise preventing device according to the fourth embodiment is attached.

FIG. 8 is a cross-sectional view showing a bent state of the terminal of the fifth embodiment.

FIG. 9 is a sectional view showing the structure of a winding processing terminal block of a conventional electric motor.

FIG. 10 is a sectional view showing a positional relationship between the winding processing terminal block and the housing.

[Explanation of symbols]

1 Stator iron core 2 inner winding 3 outer winding 4 winding processing terminal block 5 disk part 6 terminals 7 terminal insertion hole 8 binding section 9 fixed legs 10 First storage groove 11 Second storage groove 12a, 12b Locking part 13 Device mounting part 13a rising part 14 retaining part 15 notches 16 Second notch 17 recess 18 lead wire 19 Overheat prevention device 19a Lead part 20 Overheat prevention device 20a lead part

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Claims (5)

(57) [Claims] 1. An annular disc portion having a plurality of terminal insertion holes for arranging terminals, which is mounted inside a lower position of an inner winding and an outer winding to be inserted into a stator iron core and which has terminals. A device mounting portion for extending the inner and outer windings from the disc portion to the outer periphery in the form of a collar, and a device mounting portion for holding an overheat prevention device, and a flange portion extending in the outer peripheral direction of the disc portion. , A binding portion for fixing a plurality of lead wires, and a plurality of fixing legs extending below the outer peripheral edge of the disk portion and abutting the stator iron core,
A motor having a first housing groove for housing a plurality of lead wires inside the terminal insertion hole of the disk portion and a plurality of second housing grooves in the outer peripheral direction from the first housing groove. Winding processing terminal block. 2. A plurality of brim-shaped locking portions extending from the inner peripheral edge of the first storage groove in the outer peripheral direction and a plurality of flange-shaped locking portions also extending in the inner peripheral direction from the outer peripheral edge. A winding processing terminal block for an electric motor according to claim 1. 3. An apparatus mounting portion extending above the inner winding and the outer winding has a rising portion from a disk portion, a retaining portion is provided below, and both ends are substantially L from the outer circumferential direction. The winding processing terminal block for an electric motor according to claim 1, wherein a letter-shaped notch is formed. 4. The second cutout, which is continuously narrower than the width of the cutout, is provided at the innermost portion of the substantially L-shaped cutout formed in the device mounting portion. Winding terminal block for electric motor. 5. The winding processing terminal block for an electric motor according to claim 1, wherein a recessed portion shallower than the depth of the terminal insertion hole is formed on one side of the terminal insertion hole in the circumferential direction of the disk portion.