JPH0230819Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The invention is used by connecting to a transformer installed in a vehicle such as a train. This invention relates to a diaphragm type conservator for vehicles, and aims to provide a small and lightweight device.

Conventional technology Conventionally, diaphragm type conservators used by connecting to a normal transformer have been known, such as Japanese Patent Publication No. 58-42608, but these are extremely large and cannot be installed in vehicles, etc. It was impossible to use it. Therefore, metal bellows are used as conservators for vehicles, but metal bellows are heavy and are not preferred at present, when vehicles are required to be lighter in order to save energy. Therefore, a diaphragm type conservator that is used by connecting to a normal transformer,
It is conceivable to simply downsize the diaphragm, but if the diaphragm is simply downsized, the outer peripheral flange of the diaphragm and the connecting flange of the oil container that inserts and holds this outer peripheral flange must also be formed thin and narrow. As a result of not being able to maintain the liquid-tightness of the oil container and making the outer peripheral flange of the diaphragm thin, the diaphragm becomes flexible, and the diaphragm, which moves up and down to follow changes in the volume of oil within the oil container, becomes As a result of vertical movement while in contact with the inner surface, the diaphragm is damaged by this contact friction. If conventionally known conservators were simply miniaturized, the above-mentioned drawbacks would arise, so there was no other option than to use metal bellows.

Problems to be Solved by the Invention The present invention attempts to solve the above-mentioned problems, and is used by connecting to a transformer installed in a vehicle such as a train. In the diaphragm type conservator for vehicles, it is possible to maintain the liquid-tightness of the oil container, and by making the outer flange of the diaphragm thinner and making the diaphragm flexible, it is possible to keep the oil container fluid-tight and to follow the volume change of the oil inside the oil container. The purpose of the present invention is to provide a device in which a diaphragm that moves up and down does not come into contact with the inner surface of an oil container, prevents damage to the diaphragm caused by contact friction, and is small and lightweight.

Means for solving the problems In order to solve the problems mentioned above, the present invention
The top surface of the oil container with an oil inlet/outlet is covered with a lid, and a tightening bolt is inserted through the connecting flange provided opposite to the lid and the oil container, and a bolt for tightening regulation is inserted between the connecting flanges. The regulation member, the outer peripheral flange of the diaphragm that separates the oil in the oil container from the outside air, and the gasket are inserted, and the purpose is to prevent the gasket from coming off and to prevent the diaphragm from coming into contact with the inner peripheral surface of the oil container. A stopper is formed by protruding from the upper corner of the oil container.

Function Since the present invention is constructed as described above, by tightening the tightening bolts inserted through the connecting flanges provided opposite to each other on the lid body and the oil container, the tightening bolts located between the connecting flanges can be tightened. The regulating member prevents the bolt from being tightened beyond a certain limit, and prevents damage to the thin outer peripheral flange of the diaphragm due to excessive tightening. In addition, a gasket for airtightness is inserted between the connecting flanges, so even if the outer peripheral flange of the diaphragm is formed thin, the oil container and lid can be connected to each other through the gasket to prevent oil leakage. Can be tightly fixed. Also, since the stopper protrudes from the upper corner of the oil container, this stopper allows
This prevents the gasket from coming off from between the connecting flanges into the oil container, and since the stopper forms a gap between the diaphragm and the inner surface of the oil container, it prevents contact between the diaphragm and the inner surface of the oil container. It is possible to prevent damage to the diaphragm due to friction.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes an oil container, and an oil inlet/outlet 2 connected to a transformer is provided on one side, and on the inner surface of the oil outlet 2 on the oil container 1 side, The protective piece 3 protrudes in an arc shape to prevent the diaphragm 4 from being damaged due to contact with the oil inlet/outlet 2, which will be described later. Further, the upper surface of the oil container 1 is covered with a lid 5, and connecting flanges 6 and 7 are provided on the outer periphery of the lid 5 and the oil container 1, respectively, to face each other, and between the connecting flanges 6 and 7. , insert the regulating member 8 for regulating tightening and the outer peripheral flange 10 of the diaphragm 4 that separates the oil in the oil container 1 from the outside air, and insert the gasket 11 between this outer peripheral flange 10 and one connecting flange 7. do. A tightening bolt 12 is inserted into the connecting flanges 6 and 7 with the gasket 11, the regulating member 8, and the outer peripheral flange 10 interposed therebetween.
The diaphragm 4 is fixed by fixing it with the nuts 13, but since the diaphragm 4 is formed thin for miniaturization, the outer flange 10 will be damaged if it is tightened normally with the bolts 12 and nuts 13. However, since the tightening force against the outer flange 10 is limited within a certain range by the regulating member 8, the outer flange 10 will not be damaged. Furthermore, even if the outer peripheral flange 10 is thin, the presence of the gasket 11 prevents oil from leaking or contact between the oil and the outside air. Further, the gasket 11 is easily separated from between the connecting flanges 6 and 7 due to the folding movement of the diaphragm 4 due to a change in the volume of oil.
The stopper 1 protrudes from the upper corner of the oil container 1, and prevents the gasket 11 from coming off.
5 between the diaphragm 4 and the inner peripheral surface of the oil container 1,
This results in a non-contact interval 14, and due to the folding movement of the diaphragm 4 as the oil volume changes, the diaphragm 4
can be prevented from being damaged due to contact friction with the inner peripheral surface of the oil container 1.

Effects of the invention Since the present invention is constructed as described above, even if the tightening bolt inserted through the connecting flange is tightened, the tightening regulating member does not allow the tightening of the bolt against the outer periphery flange to exceed a certain limit. This prevents damage to the thin outer flange of the diaphragm caused by excessive tightening. In addition, a gasket is inserted between the connecting flanges to maintain airtightness, so even if the outer peripheral flange of the diaphragm is formed thin, the oil container and lid will not leak or come into contact with oil from the outside air. It can be fixed liquid-tight via a gasket to prevent this. Further, since the stopper protrudes from the upper corner of the oil container, this stopper can prevent the gasket from separating from between the connecting flanges into the oil container. In addition, since a gap is formed between the diaphragm and the inner surface of the oil container by the stopper, contact between the diaphragm and the inner surface of the oil container is prevented.
Damage to the diaphragm due to friction can be prevented.
As described above, the present invention can provide a small and lightweight diaphragm type conservator for vehicles while reliably solving various drawbacks caused by miniaturization.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
FIG. 1 is a partially cutaway view, FIG. 2 is an enlarged sectional view of a connecting flange portion, and FIG. 3 is an enlarged sectional view of an oil inlet/outlet portion. 1... Oil container, 2... Oil inlet/outlet, 4... Diaphragm,
5... Lid body, 6, 7... Connection flange, 8... Regulating member, 10... Outer periphery flange, 11... Gasket, 12... Bolt, 15... Stopper.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The top surface of an oil container with an oil inlet/outlet is covered with a lid, and a tightening bolt is attached to a connecting flange provided opposite to the lid and the oil container. A regulating member for regulating tightening, an outer peripheral flange of a diaphragm that separates the oil in the oil container from outside air, and a gasket are inserted between the connecting flanges, and a gasket is inserted to prevent the gasket from coming off, and the oil container of the diaphragm is inserted. A diaphragm-type conservator for vehicles characterized by a stopper protruding from the upper corner of the oil container for the purpose of preventing contact with the inner circumferential surface. (2) The diaphragm type conservator for a vehicle according to claim 1 of the utility model registration claim, characterized in that a protective piece protrudes in an arc shape from the inner surface of the oil container side of the oil inlet/outlet.