JPH0717262Y2 - Rotary rectifier - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a rotary rectifier used in a rotary electric machine to convert alternating current into direct current.

[Prior Art] A conventional rotary rectifier will be described with reference to FIGS. 3 and 4. An AC exciter 7 is attached to the rotary shaft 1 via a sleeve 11. The AC exciter 7 has a structure that it is fixed to the outer surface of the sleeve 11 by sandwiching both ends with the pressing plates 9. Further, a stud type rectifying element 5 supported by a mounting ring 2 is arranged on the rotary shaft 1,
Each rectifying element 5 is connected to the AC exciter 7 by the connecting conductor 8 to convert AC into DC. The mounting ring 2 that supports the rectifying element 5 is formed in an “L” -shaped cross-sectional shape. The disc portion is mounted on the rotating shaft 1, and the rectifying elements 5 are radially mounted inside the outer peripheral ring portion. ing. Here, each rectifying element 5 has a mounting ring 2
The outer end is supported by a ring-shaped fin 4 joined to the outer peripheral ring portion of the rectifying element 5 via an insulating plate 3.
The inner ends of the are electrically connected by the Konmon conductor 12. Reference numeral 6 denotes a tooth body for a position sensor, which is attached to the tip of the attachment ring 2 by a bolt 13, and is used to detect the rotation angle, the rotation speed, etc. of the rotary shaft 1.

[Problems to be solved by the device]

However, in the conventional structure, the mounting ring 2 and the AC exciter 7 are separately mounted in the axial direction of the rotating shaft 1, and the connecting conductor 8 for connecting the AC exciter 7 and the rectifying element 5 is connected.
Since a space for fixing the shaft to the rotary shaft 1 is required, the axial length and weight are large. Further, since the position sensor tooth body 6 is also a separate body from the mounting ring 2, there is also a problem that it is not suitable for a structure that requires weight reduction such as when mounting in an overhang shape.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a rotary rectifier capable of reducing the axial length and weight and the number of parts.

[Means for Solving the Problems]

To achieve the above object, the present invention provides an AC exciter fixed to an outer surface of a rotary shaft by a holding plate, a mounting ring in which rectifying elements are radially arranged on an inner surface via fins, and the AC exciter. In a rotary rectifier comprising a connecting conductor for connecting to a rectifying element, a plurality of conductor-penetrating grooves are provided on the outer peripheral surface of the holding plate on the free end side, and the mounting ring is attached to the holding plate. It is characterized in that it is directly mounted and that a gear-shaped tooth for a position sensor is integrally formed on the outer peripheral surface of the mounting ring.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to illustrated embodiments.

1 and 2 are a sectional view and a front view of an embodiment of the present invention. An AC exciter 7 is attached to the outer peripheral surface of the rotary shaft 1 via a sleeve 11. The AC exciter 7 is composed of a core in which a number of thin steel plates are laminated and a coil wound in a slot of the core. Pressing plates 9 are brought into contact with both ends of the core. The AC exciter 7 is attached by fitting the sleeve 11. In this embodiment, the holding plate 9 is formed in an "L" -shaped cross-sectional shape extending in the axial direction of the rotary shaft 1, and the attachment ring 2 is directly attached to the outer peripheral surface of the holding plate 9 at its free end. . In this case, the mounting ring 2 is formed in a tubular shape, and a plurality of guide-hole penetrating grooves 9a are formed on the outer peripheral surface of the holding plate 9 on the free end side. A stud type rectifying element is used as the rectifying element 5 for converting alternating current into direct current.
It is radially supported in the radial direction of the mounting ring 2 by the ring-shaped fins 4 mounted on the inner peripheral surface of the mounting ring 2 via. Further, the rectifying elements 5 are connected to each other by a conmon conducting band 12, and are connected to the AC exciter 7 by a connecting conducting band 8. In such a structure, the attachment ring 2 is directly attached to the holding plate 9, and the connecting conductor 8 can be fixed by being penetrated through the through groove 9a provided in the fitting portion into which the attachment ring 2 is fitted. The length is reduced, the weight can be reduced, and the pressing metal fitting for fixing the connecting conductor 8 is unnecessary.

Reference numeral 6 denotes a gear-shaped tooth for a position sensor, which is formed on the outer peripheral surface of the mounting ring 2. That is, the position sensor tooth 6 is formed by gear cutting at the same time when the mounting ring 2 is molded.
Since it is integrally molded with, fixing bolts and the like are unnecessary, and the number of parts can be reduced. Reference numeral 10 denotes a groove formed in the mounting ring 2 for mounting a balance weight.

[Effect of device]

As described above, according to the present invention, the mounting ring is directly attached to the pressing plate of the AC exciter, and the position sensor teeth are integrally formed on the outer peripheral surface of the mounting ring. A pressing metal fitting for connecting a connecting band, a tooth body for a position sensor, bolts for fixing the same, etc. are not required, the number of parts is reduced, and the assembly is easy. Further, since the axial length and weight can be reduced, the weight and the size can be reduced, and the rotary rectifier suitable for the overhang structure can be obtained.

[Brief description of drawings]

1 and 2 are a longitudinal sectional view and a front view of an embodiment of the present invention, and FIGS. 3 and 4 are a longitudinal sectional view and a front view of a conventional example. DESCRIPTION OF SYMBOLS 1 ... Rotating shaft, 2 ... Mounting ring, 5 ... Rectifier element 6 ... Tooth body for position sensor, 7 ... AC exciter, 8 ... Connection conductor, 9 ... Presser plate.

Claims (1)

[Scope of utility model registration request] 1. An AC exciter fixed to an outer surface of a rotary shaft by a holding plate, a mounting ring having rectifying elements radially arranged on an inner surface via fins, and the AC exciter and the rectifying element are connected to each other. In the rotary rectifier including a connecting conductor, the guide ring is provided with a plurality of guide groove passages on the outer peripheral surface of the holding plate on the free end side, and the attachment ring is directly attached to the holding plate. A rotary rectifier, wherein a gear-shaped tooth body for a position sensor is integrally formed on an outer peripheral surface of the mounting ring.