JPH077902A - Motor - Google Patents

Abstract

PURPOSE:To prevent the disconnection of a field winding due to the vibrations of a motor by obviating the processing operation of the field winding in a final process by conducting the processing of the field winding having variable speed specifications and double voltage specifications and the installation of a part connected to a fuse for protecting overcurrents and a winding such as a choke coil for preventing noises under the state of a field assembly single body and obviating a wire crossing in a space. CONSTITUTION:A structure comprises a bobbin type spool 3 having winding fixing frames on both sides of a winding, and a field assembly in which two or more of terminal fixing bases are mounted on each of the winding fixing frames on both sides is formed. Processing of a field winding of variable speed specifications and double voltage specifications and the installation of parts such as a fuse 11 and a choke coil 10 connected to a winding 10 through support sections 36 set up to the winding fixed frames and terminals inserted and fixed to the terminal fixing bases can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor used for household electric appliances.

[0002]

2. Description of the Related Art In recent years, home electric appliances have been used more and more and safety has been reviewed, and demands for gear specifications and dual voltage specifications and measures to prevent ignition due to overcurrent have become necessary. On the other hand, the demand for similar measures is increasing.

A conventional electric motor will be described in detail below with reference to the drawings. FIG. 4 is a half sectional view of a conventional electric motor. In FIG. 4, reference numeral 1 is a magnetic field in which electric iron plates are laminated, and a winding is provided. Reference numeral 2 denotes an armature, which is formed by laminating electric iron plates and integrally fixed to the shaft and the commutator, and is wound. 4 is a bracket A, which is made by processing an iron plate. 5 is also a bracket B made by processing an iron plate, and the brush holder 7 is integrally fixed by rivets or the like. Reference numeral 6 is for integrally fixing the bracket A4 and the bracket B5 by sandwiching the field, and generally a rivet or the like is used.

In the electric motor constructed as described above,
The brush holder 7 is used to attach components such as a field connection wire having a speed change specification and a double voltage specification and a fuse (hereinafter referred to as a fuse) for overcurrent protection, which is connected to a winding.

FIG. 5 (a) is a front view of a commonly used brush holder, in which several terminals are fixed and field windings are connected to these terminals for use. For general use, the field winding is connected to the terminals 71, 73, 75, 77 of the brush holder 7. The terminals 73 and 75 are connected to the brush box 9 by a connecting wire 8. Then, by connecting an intermediate lead wire of the field winding to the terminals 74 and 76 of the brush holder 7, wiring such as gear shift specifications and double voltage specifications is performed.

Further, as shown in FIG. 5B, the fuse is attached by attaching a fuse between the terminals 71 and 72 and connecting the field winding to the terminal 72. , Choke coil) is attached using a brush holder as shown in FIG. 5C in which a choke coil 10 is connected instead of the connecting wire 8 of the brush holder in FIG. 5A.

[0007]

However, in the above-mentioned structure, it is necessary to connect the field windings according to the speed change specification and the double voltage specification and to attach the parts such as the fuse and the choke coil connected to the windings. Not only will everything be done on the brush retainer, but the workability will be poor because the field winding must be processed in the final step of motor assembly, and the field winding connected to the brush retainer will also deteriorate. Since the wire crosses the space, there is a problem that the wire is broken due to the vibration of the motor.

In view of the above-mentioned conventional problems, the present invention treats field windings of gear shifting specifications and double voltage specifications and mounts components connected to windings such as fuses and choke coils in the field assembly alone. The purpose of the present invention is to eliminate the work of processing the field winding in the final process by performing in the state, and to prevent the disconnection of the field winding due to the motor vibration by eliminating the line crossing the space.

[0009]

In order to achieve the above object, the electric motor of the present invention has bobbin type winding frames having winding fixing frames on both sides of the winding, and each winding fixing frame on each side has a bobbin type winding frame. With a structure that has a field assembly with two or more terminal fixing bases,
Via the support part provided in the winding fixing frame and the terminal fixed in the terminal fixing base, it is connected to the processing of the field winding of the speed change specification and the double voltage specification and the winding such as fuse and choke coil. It has a configuration for mounting parts.

[0010]

According to the above construction, by processing the field winding of the speed change specification and the double voltage specification and mounting the components connected to the winding such as the fuse and the choke coil in the state of the field assembly alone. It is possible to eliminate the processing work of the field winding in the final process, eliminate the line crossing the space, and prevent the field winding from breaking due to the vibration of the motor.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a half sectional view of an electric motor according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a field in which electric iron plates are laminated, and has a bobbin type winding frame 3 provided with winding fixing frames on both sides of the winding, and is wound. Reference numeral 2 denotes an armature, which is formed by stacking electric iron plates, integrally fixed to the shaft and the commutator, and wound. 4 is a bracket A, which is made by processing an iron plate. Reference numeral 5 denotes a bracket B, which is made of a resin molded product, but there is no problem even if it is a processed iron plate. Reference numeral 6 denotes a through bolt for integrally fixing the bracket A4 and the bracket B5 with a field interposed therebetween. In this embodiment, the through bolt is used because the bracket B5 is made of resin, but a rivet or the like is used. There is no problem using.

FIG. 2 is a top view of the field assembly used in the electric motor of this embodiment as viewed from the terminal side. FIG. 3 (a) is a top view of a bobbin type winding frame 3 having a winding fixing frame used for the field assembly shown in FIG. Both ends of the field winding are connected to the power supply terminal 31 and the brush terminal 32, respectively.

FIG. 3 (b) is a top view of a single winding frame provided with a winding when the electric motor is used as a speed change specification or a double voltage specification. The intermediate lead wire of the field winding is provided with a tap terminal 33.
Used by connecting to. In this embodiment, since only two terminal fixing bases are provided on each of the winding fixing frames, only one intermediate lead wire of the field winding can be connected, but by providing two or more terminal fixing bases. , It is possible to connect two or more intermediate lead wires.

To attach a component used in connection with the field winding such as the choke coil 10 or the like, it may be attached between the tap terminal 33 and the brush terminal 32 as shown in FIG. 3 (c). Further, as shown in FIG. 3D, a short-circuit terminal 34 is attached between the power supply terminal 31 and the convex portion 36 for supporting the winding frame, and the silver wire fuse 11 is connected between the short-circuit terminal 34 and the relay terminal 35. By attaching, an inexpensive overcurrent protection device can be attached.

[0016]

As described above, according to the present invention, the processing of the field winding of the speed change specification and the double voltage specification and the attachment of the parts connected to the winding such as the fuse and the choke coil are carried out. A motor with a field assembly that can be used as a single unit to eliminate the field winding processing work in the final process, and to prevent wire breaks due to motor vibration by eliminating lines crossing the space. Can be provided.

[Brief description of drawings]

FIG. 1 is a half sectional view of an electric motor according to an embodiment of the present invention.

FIG. 2 is a top view of a field assembly used in an electric motor according to an embodiment of the present invention.

FIG. 3 (a) is a top view of a coil assembly in a state in which a general winding is used for the field assembly in one embodiment of the present invention; and (b) a field assembly in one embodiment of the present invention. Top view of a coil assembly used for a three-dimensional structure in which a winding of a speed change specification or a double voltage specification is applied. (C) A choke coil or the like used in the field assembly in one embodiment of the present invention is attached. Top view of the coil assembly in a state (d) A top view of the coil assembly with a silver wire fuse used in the field assembly according to one embodiment of the present invention attached.

FIG. 4 is a half sectional view of a conventional electric motor.

5A is a front view of a brush holder used in a conventional electric motor, FIG. 5B is a front view of a brush holder used in a conventional electric motor with a silver wire fuse attached, and FIG. 5C is a conventional electric motor. Back view of the brush cage used for

[Explanation of symbols]

1 Field 2 Armature 3 Bobbin Type Reel 4 Bracket A 5 Bracket B 6 Through Bolt / Rivet 7 Brush Holder 8 Crossover 9 Brush Box 10 Choke Coil 11 Silver Wire Fuse 31 Power Terminal 32 Brush Terminal 33 Tap Terminal 34 Short Circuit Terminal 35 Relay terminal 36 Support portion provided on the winding frame 71, 72, 73, 74, 75, 76, 77 Terminal on the brush holder

Claims (4)

[Claims] 1. A field assembly comprising a bobbin type winding frame provided with winding fixing frames on both sides of the winding, and two or more terminal fixing bases provided on each of the winding fixing frames on both sides. Electric motor with three-dimensional shape. 2. The electric motor according to claim 1, wherein both ends of the winding and an intermediate lead wire of the winding are connected through a terminal fixed to a terminal fixing base provided on the winding fixing frame. . 3. The electric motor according to claim 1, wherein a component connected to the winding is attached through a terminal fixed to a terminal fixing base provided on the winding fixing frame. 4. A support portion provided on the winding fixing frame,
2. The electric motor according to claim 1, wherein a fuse for overcurrent protection is attached by a terminal inserted and fixed in the terminal fixing base.