JPH051811U - Oil filter - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide an oil filter in which a housing part that can be repeatedly used is left and a filter element can be easily replaced. [Structure] A filter element 3 is housed inside a cylindrical housing 2 having an open upper part and a closed bottom part, a packing part 5 is provided on the outer periphery of an upper open end of the housing, and a center pipe 6 is integrally formed at the center of the bottom part of the housing. The center pipe is provided with a threaded portion 6b at its upper end, a porous portion 6a in the middle, and a holeless portion 6c at the lower end, and upper and lower end plates 3a, 3b are attached to the filter element and the upper end plate is attached. A check valve 7 was attached to the inner circumference of the housing, and the housing was rotated by aligning the threaded portion at the upper end of the center pipe with the mounting pipe of the engine block.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an oil filter in which a filter element in a housing can be replaced.

[0002]

[Prior Art]

 The oil filter provided in the lubrication system of an automobile engine has a filter element housed inside a cylindrical housing whose bottom is closed, and a base plate is integrally attached to the top of the housing by caulking or the like. The base plate is provided with an oil intake port and an oil discharge port that communicate with the outer circumference and the inner circumference of the filter element, respectively. Also, a mounting screw for mounting to the engine block is provided around the oil discharge port. The oil introduced from the oil intake into the housing is filtered by passing from the outer circumference to the inner circumference of the filter element, is discharged from the oil discharge opening on the upper side, and is supplied to the engine lubrication portion.

The oil filter of this structure is a disposable type oil filter that discards the entire oil filter when the oil filter is clogged. It is easy to replace the oil filter and can be replaced by general automobile users. There is. However, in reality, there were technical problems described below.

[0004]

[Problems to be solved by the device]

 In other words, due to the problems of modern industrial waste and environmental pollution, there is an increasing social demand to minimize waste. Therefore, when the oil filter reaches the limit of use, the housing should be reused and only the filter element should be reused. It would be good if they could be exchanged. However, in the case of a disposable type oil filter, it is easy to replace it, and in general, the oil filter that can be replaced by the automobile user cannot replace only the filter element, and it is necessary to discard the entire filter including the housing. We were unable to address the problems of industrial waste and environmental pollution.

The present invention solves the above problem, and a filter element housed inside is easily removed by removing a threaded portion of a center pipe provided in a housing from a mounting pipe of an engine block. It is intended to be replaceable and the housing to be used repeatedly to provide an oil filter with less waste.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in this invention, an installation pipe of an oil filter is projected from an engine block, an oil intake is provided on the outer periphery of the installation pipe, and an oil discharge port is provided in the pipe. In an oil filter that is attached by being screwed into a pipe, a filter element is housed inside a cylindrical housing with an open top and a closed bottom, and a packing part is provided on the outer periphery of the upper open end of the housing. A center pipe is integrally fixed to the center of the bottom of the housing, the center pipe is provided with a threaded portion at the upper end, a porous portion in the middle, and a holeless portion at the lower end, and the filter element has upper and lower end portions. Attach the plate and a check valve on the inner circumference of the upper end plate, The center pipe is screwed into the mounting pipe by fitting the screw part at the upper end to the mounting pipe of the engine block and rotating the housing, and the check valve closes the oil intake port and the packing part. Is designed to come into close contact with the surface of the engine block.

[0007]

[Action]

 When the housing is rotated while the oil filter of the present invention is attached to the engine block, the center pipe is also rotated and the housing is disengaged from the engine block. In this condition, pull out the filter element from the housing and replace it with a new one. After that, the center pipe is screwed into the mounting pipe by rotating the housing again by aligning the threaded portion at the upper end of the center pipe with the mounting pipe of the engine block, and the oil filter is mounted to the engine block.

[0008]

【Example】

 FIG. 1 shows an oil filter according to this invention.

The oil filter in the figure comprises a housing 2 fixed to a lower portion of a cylinder block 1 of an engine in a liquid-tight manner by screwing, and a filter element 3 housed inside the housing 2.

In the cylinder block 1, a ring groove 1a is formed on the lower surface to serve as an oil supply portion, and a mounting pipe 1b provided with a male screw portion at the lower central portion of the ring groove 1a is integrally projected, and its hollow interior is The oil discharge port 1c is used.

The housing 2 is provided with a packing part 5 at the outer peripheral end with the upper surface of the cylindrical container 4 closed at the bottom as an opening, and a center pipe 6 fixed by a fixing means such as welding at the center of the bottom closed. The center pipe 6 has a porous portion 6a in the middle, a screw portion 6b at the upper end, and a holeless portion 6c at the lower portion.

The filter element 3 is fixed between the upper and lower end plates 3a and 3b by sandwiching a pleated and cylindrical filter member 3c and a reinforcing bored inner cylinder 3d. The end plate 3a is liquid-tightly fitted around the mounting pipe 1b via a check valve 7. A packing 8 is inserted into the inner periphery of the lower end plate 3b, and the centerless pipe 6 has a holeless portion 6c which is liquid-tight. A leaf spring 9 is interposed between the housing 2 and the inner bottom portion of the housing 2 and is always kept. The filter element 3 is biased to the raised position.

In the oil filter having the above structure, dirty oil pushes up the check valve 7 from the oil intake 1a and enters the outer periphery of the filter element 3. The oil that has been filtered and cleaned by the filter member 3c is discharged from the oil discharge portion 1c and supplied to the lubricating portion of the engine. When the filter element 3 is clogged, the housing is rotated to unscrew the threaded portion 6b of the center pipe 6 of the housing 2 from the mounting pipe 1b of the engine block 1, remove the oil filter from the engine block 1, and remove the oil filter. Remove the clogged filter element 3 from the housing 2, insert a new filter element 3 into the housing 2, and screw the screw 6b of the center pipe 6 of the housing 2 into the mounting pipe 1a of the cylinder block 1 to remove the oil filter. Is attached to the engine block 1 and the filter element 3 is replaced.

[0014]

[Effect of the device]

 As described above in detail with reference to the embodiments, in the oil filter according to the present invention, by rotating the housing, the oil filter screwed between the cylinder block mounting pipe and the housing center pipe is unscrewed. , The filter element housed inside can be easily replaced, and it is less labor-intensive than the replacement of a disposable type oil filter. An oil filter that can be replaced and complies with industrial waste regulations.

[Brief description of drawings]

FIG. 1 is a sectional view according to a first embodiment of the present invention.

[Explanation of symbols]

 1 Cylinder block 1b Mounting pipe 2 Housing 3 Filter element 6 Sauter pipe 7 Check valve

Claims (1)

[Claims for utility model registration] [Claim 1] An installation pipe for an oil filter is projected from the engine block, and an oil intake port and an oil discharge port are provided in the outer periphery of the installation pipe. In an oil filter mounted by being screwed into a pipe, a filter element is housed inside a cylindrical housing having an open top and a closed bottom, and a packing part is provided on the outer periphery of the upper open end of the housing, A center pipe is integrally fixed to the center of the bottom portion, and the center pipe is provided with a threaded portion at its upper end, a porous portion in the middle, and a holeless portion at the lower end,
The upper and lower end plates are attached to the filter element, and a check valve is attached to the inner circumference of the upper end plate, and the screw portion at the upper end of the center pipe is aligned with the attachment pipe of the engine block to attach the housing. By rotating, the center pipe is screwed into the mounting pipe, the check valve closes the oil intake port, and the packing part comes into close contact with the surface of the engine block. filter.