JPS62111187A - Generator with vacuum pump - Google Patents

Abstract

PURPOSE:To obtain a generator with a vacuum pump with simplified construction and high durability further with light weight, by integrally forming a bearing bush of the generator with the vacuum pump with the lining member of a pump casing. CONSTITUTION:A pump rotor 8 is arranged in a pump casing 9 integrally formed with the casing of a generator 1. Further a rotor shaft 2, driving the pump rotor 8, is supported to a boss part, extending from a bracket 4, through a bearing 3. A bearing bush 6, fixing the bearing 3 to the boss part, is integrally formed with a lining member 10, provided in the pump casing 9, from cast iron. While the casings of the generator and the pump and the bracket 4 are integrally formed from an aluminum material. Consequently, weight lightness and durability of the generator with the vacuum pump can be simultaneously improved with no increase of a number of part items.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a generator with a vacuum pump, and particularly relates to a generator with a vacuum pump in which a generator bracket and a vacuum pump casing are integrally formed. It is something.

[Background of the invention]

BACKGROUND OF THE INVENTION A hydraulic brake system for an automobile brake system uses a generator equipped with a vacuum pump, in which a vacuum pump (hereinafter referred to as a vacuum pump) is directly connected to an alternator driven by an engine.

This generator with a vacuum pump uses a structure in which the casings of the generator and the vacuum pump are integrated, but various proposals have been made regarding the integration of the casings, mainly from the viewpoint of cost reduction. −
1Ji has been done. For example, as disclosed in Japanese Unexamined Patent Publication No. 58-51295, there is a system in which the casings of both the generator and the vacuum pump are integrally formed to reduce the required configuration space and the number of parts used. In this case, the generator casing (hereinafter referred to as the bracket) is usually made of aluminum casting, but in order to integrate it, it is necessary to change the vacuum pump casing from the normally used cast iron to aluminum casting. There is. On the other hand, using cast aluminum as described above poses a problem from the viewpoint of durability, and for this reason, it is practically necessary to line the casing of the vacuum pump with a bushing made of cast iron. However, if such a configuration is adopted, another bushing will be required in addition to the bushing that was previously buried in the bearing box of the generator bracket, and a total of two bushings will have to be buried. However, there were drawbacks such as an increase in the number of parts and a complicated positioning method during casting when two bushings were buried at the same time.

[Purpose of the invention]

An object of the present invention is to provide a generator with a vacuum pump that does not require an increase in the number of parts, has a simple structure, and has good durability.

[Summary of the invention]

The present invention provides a generator part including a generator bracket, a bushing embedded in a bearing box part of the bracket, a bearing for a generator rotor shaft contained in the bushing, and a shaft for the rotor shaft. A vacuum pump unit comprising a rotor of the vacuum pump that fits into the end, a casing that houses the rotor and is integrally formed with the bracket, and a Makabe pump part that has a lining member embedded in the casing. The generator is characterized in that the bushing and the lining member are integrally formed, and the object is achieved without increasing the number of parts.

[Embodiments of the invention]

An embodiment of the present invention will be explained below with reference to FIG. 1st
The figure is a partial sectional view of an embodiment of the vacuum pump-equipped generator of the present invention.

In this figure, l is a generator driven by an engine. 2 is the rotor shaft of the generator l, 3 is the bearing of the rotor shaft 2,
4 is a bracket of the generator 1, 5 is a bearing box portion of the bracket 4, and 6 is a bushing which is formed integrally with the lining member lO and is embedded in the bearing box portion 5 to prevent wear of the bearing box portion 5. 7 is a vacuum pump, 8 is a rotor of the vacuum pump 7, and 9 is a casing, which is formed integrally with the bracket 4. The lining member 10 is formed integrally with the bushing 6 and is embedded inside the casing 9 to reinforce the durability of the casing 9.

In the vacuum pump-equipped generator of this embodiment, the lining member lO buried inside the casing 9 and the bushing 6 buried in the bearing box portion 5 are integrally formed, so that the number of parts does not increase. , the structure can be simplified and the durability can be improved.

Further, the manufacture of the lining or the integrated member 10 and bushing 6 is carried out by casting, but when positioning the casting, the end face AXB of the lining member IO can be used as a reference, so the mold The structure can be simplified, manufacturing can be facilitated, and manufacturing costs can be reduced.

〔Effect of the invention〕

According to the present invention, it is possible to obtain a vacuum pump-equipped generator that does not require an increase in the number of parts, has a simple structure, and has good durability.

[Brief explanation of drawings]

FIG. 1 is a partial cross-sectional view showing one embodiment of a generator with a vacuum pump according to the present invention. 1... Generator, 2... Rotor shaft, 3... Bearing, 4
... Bracket, 5... Bearing box, 6... Bush, 7... Vacuum pump, 8... Rotor, 9...
...Casing, lO... Lining member.

Claims (1)

[Claims] 1. A generator part including a generator bracket, a bushing embedded in a bearing box part of the bracket, and a bearing for a generator rotor shaft contained in the bushing, and a shaft for the generator rotor shaft. A vacuum pump unit comprising a rotor of the vacuum pump fitted to the end, a casing housing the rotor and integrally formed with the bracket, and a vacuum pump part having a lining member embedded in the casing. A generator with a vacuum pump, characterized in that the bush and the lining member are integrally formed.