JP3062778B2 - Generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention is a generator, in particular in the housing of the stator is formed by sandwiched between the first and second brackets are fastened to each other, first the first bracket
Core and coil are mounted on rotatably held rotor shaft via a bearing rotor comprising is accommodated, the driving force of the engine is transmitted to the end portion of the second bracket side of the pre-Symbol rotor shaft
Related to the generator to be performed .

[0002]

2. Description of the Related Art Conventionally, such a generator is already known, for example, from Japanese Utility Model Application Laid-Open No. 58-92866 and Japanese Utility Model Application Publication No. 1-39097.

[0003]

By the way, such a generator has a structure for transmitting the power of the engine to the rotor shaft as a structure for transmitting the power of the engine to the rotor shaft, and a structure for transmitting the power of the engine to the rotor shaft via a rotating wheel such as a pulley. In some, the crankshaft of the engine is directly connected to the rotor shaft.

The generator disclosed in Japanese Utility Model Application Laid-Open No. 58-92866 transmits the power of the engine to a rotor shaft through a rotating wheel such as a pulley, and a bearing is mounted on the first and second brackets. A rotor shaft is supported via each, and a rotating wheel such as a pulley is fixed to an end of the rotor shaft protruding from the second bracket. In addition, the above-mentioned actual fair 1-3909
7 No. generator publication is for connecting directly to the engine crankshaft to the rotor shaft, via a bearing on the first bracket
The crankshaft of the engine is coaxially taperedly fitted to the opening end of the cylindrical rotor shaft rotatably held at the second bracket side, inserted through the rotor shaft and the end of the rotor shaft at the first bracket side. A connection bolt whose head is engaged with the portion is screwed into the crankshaft.

As described above, since the shape of the rotor shaft is different due to the difference in the power transmission system from the engine, the rotors of the two types of generators are different from each other, and the overall structure is different.

[0006] The present invention has been made in view of the above-mentioned circumstances, and it is possible to cope with the difference in the power transmission system from the engine only by replacing some parts, thereby reducing the number of models and sharing most parts. It is therefore an object of the present invention to provide a generator capable of reducing the number of management steps.

[0007]

To achieve the above object, according to the solution to ## The invention according to claim 1, in the housing where the stator is formed by sandwiched between the first and second brackets are fastened to each other, the first first rotor rotatably retained core and coils in the rotor shaft, which are mounted via a bearing is accommodated in the bracket, the second bracket side of the pre-Symbol rotor shaft
In a generator in which the driving force of the engine is transmitted to the end of the rotor , the rotor shaft is formed in a cylindrical shape, and
A taper fitting is provided at the opening end on the second bracket side, and
Of the tapered fitting portion, a tapered tip portion of the connecting shaft can be secured to the base periphery of the pulley which is operatively connected to the engine causes the tapered fitting, the intermediate portion of the connecting shaft second bearing
Head to the end of the rotor shaft via the second held in bracket, while being inserted into the rotor shaft in the first bracket side
It There was screwed a bolt which is engaged to the front portion of the connecting shaft
It is characterized by.

[0008] The invention of claim 2 is the invention of claim 1.
In addition to the above features, the second bearing is an aligning bearing .

[0009]

An embodiment of the present invention will be described below with reference to the drawings.

First, in FIG. 1, a housing 1 of the generator has an annular core 6 of a stator 5 sandwiched between first and second brackets 3, 4 fastened to each other by a plurality of connecting bolts 2, A coil 7 is wound around the annular core 6.

The housing 1 houses a rotor 8 located inside the stator 5. This rotor 8
A rotor shaft 10 rotatably supported on the first bracket 3 via a first bearing 9, an iron core 11 mounted on the rotor shaft 10, and a coil 13 wound around the iron core 11 via a bobbin 12. Consisting of The rotor shaft 10 is formed in a cylindrical shape having an insertion hole 14 coaxially.
A tapered fitting portion 15 having a larger diameter toward the second bracket 4 is provided at the opening end of the second bracket 4. In addition, a fan 16 is fixed to the end of the rotor shaft 10 on the second bracket 4 side. The above rotor shaft 10 between the bearing 9 and the coil 13 is fixed slip ring holder 17, the slip ring 18 on the outer periphery of the slip ring holder 17 is fixed. Further, a brush holder 19 is fixed to the first bracket 3, and a brush 20 slidably in contact with the slip ring 18 is supported on the brush holder 19.

On the other hand, a support hole 21 is provided in the center of the second bracket 4, and an intermediate portion of a connecting shaft 22 coaxially arranged in the support hole 21 is provided between the support shaft 21 and the inner surface of the support hole 21. Is rotatably supported by the second bracket 4 with an aligning bearing 23 as a second bearing interposed therebetween.
A pulley 26 as a rotating wheel for transmitting power from an engine (not shown) is fitted and fixed to an outer periphery of a base protruding from the bracket 4.

The tapered end of the connecting shaft 22 is tapered into the tapered fitting portion 15 of the rotor shaft 10. Moreover screw hole 24 is provided coaxially to the previous end of the connecting shaft 22. A bolt 25 having a locking head 25 a that engages with the end of the rotor shaft 10 on the first bracket 3 side is inserted into the insertion hole 14 of the rotor shaft 10.
Screw holes 24. Thus, by tightening the bolt 25, the rotor shaft 10 and the connecting shaft 22 are coaxially fixed, and a slight center is formed by the fitting of the rotor shaft 10 and the connecting shaft 22 at the taper fitting portion 15. Even if the displacement occurs, the pulley 26 does not vibrate because it is absorbed by the aligning bearing 23.

Incidentally, the generator shown in FIG.
Although the power is transmitted from the motor 6 to the rotor shaft 10, in order to form a generator directly connected to the engine, as shown in FIG. 2, the power is transmitted through the second bracket 4 and the centering bearing 23. The connecting shaft 22 supported by the second bracket 4 is removed, and the second bracket 4 'is used instead.

The second bracket 4 'has a through hole 27 at the center thereof, and the first bracket 4'
It is fastened to the bracket 3 to form the housing 1 '. Thus, the crankshaft 28 of the engine is inserted into the housing 1 ′ through the through hole 27, fitted to the tapered fitting portion 15 of the rotor shaft 10, and the bolt 25 inserted into the rotor shaft 10 is connected to the crankshaft 28. Screwed.

Next, the operation of this embodiment will be described. The tapered fitting portion 15 is provided at the open end of the rotor shaft 10 on the second bracket 4 side, and the connecting shaft 22 capable of fixing the pulley 26 is connected to the second bracket 4. The bolt 25 is fitted to the tapered fitting portion 15 with the centering bearing 23 interposed therebetween, and is engaged with the rotor shaft 10 on the first bracket 3 side, and the bolt 25 inserted into the rotor shaft 10 is connected. Since it is screwed to the shaft 22, the second bracket 4 and the centering bearing 2
3 and a connecting shaft 22 supported through the pulley 26 is prepared as an assembly, and the assembly and the second bracket 4 'are selectively selected. Generators can be easily dealt with, and by simply replacing some parts, most parts of the generator can be shared to form a generator of both transmission systems, reducing the number of parts As a result, cost can be reduced by reducing the number of management steps.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various small design changes can be made without departing from the present invention described in the appended claims. Can be performed.

[0018]

As described above, according to the first aspect of the present invention,
A stay is provided between the first and second brackets to be fastened to each other.
A first bracket is provided in the housing in which the
To the rotor shaft rotatably held via the first bearing
A rotor consisting of a core and a coil
The engine is driven at the end of the rotor shaft on the second bracket side.
In a generator in which force is transmitted, the rotor
The shaft is formed in a cylindrical shape, and the opening on the second bracket side is formed.
A tapered fitting portion is provided at an end portion, on the tapered fitting portion, a tapered tip portion of the fixed linkage shaft to the base periphery of the pulley causes tapered fitting being operatively connected to the engine, the
The intermediate part of the connecting shaft is connected to the second bracket via the second bearing
Hold the bolt which is inserted into the rotor shaft and whose head is engaged with the end of the rotor shaft on the first bracket side.
Since it screwed to the tip portion of the serial connecting shaft, a second bracket, this
And a connecting shaft held via a second bearing to the first bracket.
Generators including bracket and rotor shaft (and thus rotor)
Leave prepared as separate independent sub-assembly from the parts, and their sub-assemblies, by alternatively selecting a second bracket without a connecting shaft and bearings, power generation of the power transmission system and the direct transmission scheme according pulley It is very easy to deal with the generator, and therefore, it is possible to deal with the difference in the power transmission method to these generators only by replacing some parts. It is possible to achieve cost reduction by reducing the number of management steps by sharing. Moreover, when assembling the sub-assembly to the main part of the generator, the tapered portion of the connecting shaft is inserted into the taper fitting portion, so that the first sub-assembly (the second bracket) can be assembled.
The positioning guide to the bracket side can be easily and accurately performed, which can contribute to an improvement in the efficiency of the assembling work.

According to the second aspect of the present invention, the first
Since the second bearing is a centering bearing, even if a slight misalignment occurs at the taper fitting portion between the rotor shaft and the connection shaft, the centering bearing can absorb the slight misalignment, and vibration occurs in the pulley. Never.

[Brief description of the drawings]

FIG. 1 is a longitudinal side view of a pulley transmission type generator.

FIG. 2 is a vertical sectional side view of a generator directly connected to a crankshaft.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Housing 3 1st bracket 4 2nd bracket 5 Stator 8 Rotor 9 bearing (1st bearing) 10 Rotor shaft 11 Iron core 13 Coil 15 Taper fitting part 22 Connecting shaft 23 Alignment bearing (2nd bearing) 25 Bolt 25a Locking head (head) 26 Pulley

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 50-3001 (JP, U) Japanese Utility Model Showa 58-34560 (JP, U) Japanese Utility Model Showa 60-35918 (JP, U)

Claims (2)

(57) [Claims] The method according to claim 1 first and second brackets (3,4) are fastened to each other between the stator (5) is formed by sandwiching the housing (1) in a first in first bracket (3)
The rotor shaft (1 ) rotatably held via a bearing (9)
0) to the core (11) and a coil (rotor 13) is formed by mounting (8) is accommodated, before SL rotor axis (10)
The driving force of the engine is transmitted to the end on the second bracket (4) side.
In a generator adapted to be reached , said rotor shaft (10) is formed in a cylindrical shape and its second
A tapered fitting part (15) at the opening end on the bracket (4) side
The provided, at its tapered mating portion (15), the tapered tip portion of the pulley (26) fixable coupling shaft to the base periphery (22) which is operatively connected to the engine when the tapered fitting co
The intermediate portion of the connecting shaft (22) is connected to a second bearing (23).
The head (25a) is held by the second bracket (4) through the rotor shaft (10) and inserted into the end of the rotor shaft (10) on the side of the first bracket (3). Screw (25) into the tip of the connecting shaft (22).
A generator, characterized in that: 2. The generator according to claim 1, wherein the second bearing is an aligning bearing.