JPH0522801U - Oil tank - Google Patents

Abstract

(57) [Summary] [Structure] A pair of recesses 20 and 21 are formed in the tank main body 2 at opposite positions. One end of the cylindrical oil filter 15 is inserted into one recess 20 and the other end of the oil filter 15 is inserted into the other recess 21. The oil inflow port 3 is connected to one end of the oil filter 15 via the one recess 20, and the other end of the oil filter 15 is brought into contact with the inner surface of the other recess 21.
The end of the oil filter 15 can be inserted into at least one of the recesses 21 from above. [Effect] The oil filter cannot be removed even if the oil pressure flowing into the tank body is large. Since the oil filter can be stably fixed, the area of the mesh forming the oil filter can be expanded to reduce the oil passage resistance, and the oil flow rate can be prevented from decreasing and the mesh can be prevented from breaking. The oil filter can be installed easily.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an oil tank provided in a hydraulic circuit of a hydraulic power steering device, for example.

[0002]

[Prior Art]

 FIG. 7 is a sectional view of a lower portion of a conventional oil tank, which includes a tank body 101 that stores oil and an inflow pipe 103 that forms an oil inlet 102 to the tank body. In such an oil tank, in order to filter the oil flowing into the tank body 101, a cylindrical oil filter 104 is connected to the inflow port 102. The oil filter 104 was connected by inserting the inflow pipe 103 into the oil filter 104.

[0003]

[Problems to be solved by the device]

 In the conventional oil tank, when the pressure of the oil flowing into the tank body 101 from the inflow port 102 is large, the oil filter 104 may come off from the inflow pipe 103. Also, since the support of the oil filter 102 is cantilevered and unstable, the axial size of the oil filter is limited, the area of the mesh that constitutes the oil filter 102 is small, the oil passage resistance increases, and the oil flow rate decreases. There was a problem that it did or the mesh was broken.

An object of the present invention is to provide an oil tank that can solve the above-mentioned problems of the prior art.

[0005]

[Means for Solving the Problems]

 A feature of the present invention is that in an oil tank including a tank body that stores oil and a cylindrical oil filter that is connected to an oil inlet of the tank body, the inside of the tank body faces each other. A pair of recesses are formed at positions where one end of the oil filter is inserted into one recess, and the other end of the oil filter is inserted into the other recess, and one end of the oil filter is inserted through one recess. The other end of the oil filter is brought into contact with the inner surface of the other recess, and the end of the oil filter can be inserted into at least one of the recesses from above.

[0006]

[Action]

 According to the configuration of the present invention, the oil inlet is connected to one end of the oil filter, and the other end of the oil filter is brought into contact with the inner surface of the recess, so that the pressure of the oil flowing from the inlet is large. However, since the other end of the oil filter is supported by the inner surface of the recess, the oil filter will not come off due to the oil pressure.

The oil filter is supported at both ends and is stably fixed. As a result, the axial length of the oil filter can be increased to increase the mesh area.

Since the end portion of the oil filter can be inserted into at least one of the concave portions from above, the oil filter can be easily attached.

[0009]

【Example】

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

An oil tank 1 shown in FIG. 3 includes a tank body 2 made of synthetic resin for storing oil, an inflow pipe 13 forming an oil inlet 3 to the tank body 2, and an oil from the tank body 2. Outflow pipe 14 that constitutes the outflow port 4, a cylindrical oil filter 15 that is interposed between the inflow port 3 and the outflow port 4, and a cap that opens and closes the oil supply port 5 formed in the upper part of the tank body 2. 6 and an oil filter 10 interposed between the oil supply port 5 and the outflow port 4. The tank body 2 is formed by welding an upper member 2a and a lower member 2b. The cap 6 is formed by connecting the outer peripheral member 6a and the inner peripheral member 6b, and is detachably fitted to the peripheral portion of the fuel filler opening 5 via a seal ring 7. An oil gauge 8 is integrally formed with the inner peripheral member 6b.

The oil filter 10 interposed between the oil supply port 5 and the outflow port 4 includes a filter body 11 formed by a cylindrical mesh, and an outer frame 12 and an inner frame 13 that sandwich the filter body 11. And is supported by a ring-shaped support body 9 welded below the fuel filler port 5 via a flange portion 12a at the upper end of the outer frame 12.

The oil filter 15 interposed between the inflow port 3 and the outflow port 4 is, as shown in FIG. 4, a cylindrical filter body 16 formed of a synthetic resin mesh, and the filter body 16 The outer frame 17 has an outer frame 17 and an inner frame 18 sandwiching the outer frame 17, and projecting portions 19 projecting radially outward are integrally formed at both ends of the outer frame 17.

As shown in FIG. 1 and FIG. 2, at the positions where the side walls forming the tank body 2 face each other, there are thickened portions 22 and 23 that project inward in the radial direction. Recesses 20 and 21 are formed respectively. The recesses 20 and 21 are open at the upper side and the inner side, and the shape in plan view follows the shape of both ends of the oil filter 15. One end of the oil filter 15 is inserted into the one recess 20 from above, and the other end of the oil filter 15 is inserted into the other recess 21 from above. As a result, the oil filter 15 is supported at both ends by the tank body 2. Both ends of the oil filter 15 are welded to the tank body 2 after being inserted into the recesses 20 and 21. The oil inlet 3 communicates with one of the recesses 20 and is connected to one end of the oil filter 15. The other end surface of the oil filter 15 is brought into contact with the inner side surface 21a of the other recess 21.

According to the above configuration, even if the oil pressure flowing from the inflow port 3 is large, the other end of the oil filter 15 is in contact with the inner surface of the recess 21. Does not come off. Further, since the oil filter 15 is supported at both ends, it is stably fixed. As a result, the axial dimension of the oil filter 15 can be increased to increase the mesh area of the filter body 16 to reduce the oil passage resistance and prevent the mesh constituting the filter body 16 from being broken or the oil flow rate to be reduced. . Further, the oil filter 15 can be supported by the tank main body 2 simply by inserting it into the recesses 20 and 21 from above, so that the oil filter 15 can be easily mounted.

FIG. 5 and FIG. 6 relate to different embodiments, and the recess 30 formed in the other end of the tank body 2 is formed into a hole shape that opens only inward, and the other end of the oil filter 15 is overhanging. The portion 19 is not formed, but has a cylindrical shape. Then, after the other end of the oil filter 15 is laterally inserted into the recess 30, the one end of the oil filter 15 is inserted into the recess 20 from above. Others are the same as those in the above-mentioned embodiment, and the same portions are denoted by the same reference numerals.

[0016]

[Effect of the device]

 According to the oil tank of the present invention, the oil filter does not come off even if the oil pressure flowing into the tank body is large. Further, since the oil filter can be stably fixed, the area of the mesh forming the oil filter can be expanded to reduce the oil passage resistance, and it is possible to prevent the oil flow rate from decreasing and the mesh from breaking. Moreover, the oil filter can be easily attached.

[Brief description of drawings]

FIG. 1 is a side sectional view of an essential part of an oil tank according to an embodiment of the present invention.

FIG. 2 is a plan sectional view of an essential part of an oil tank according to an embodiment of the present invention.

FIG. 3 is a sectional view of an oil tank according to an embodiment of the present invention.

FIG. 4 is a sectional view of an oil filter according to an embodiment of the present invention.

FIG. 5 is a side sectional view of an essential part of an oil tank according to another embodiment of the present invention.

FIG. 6 is a plan sectional view of an essential part of an oil tank according to another embodiment of the present invention.

FIG. 7 is a partial cross-sectional view of an oil tank according to a conventional example.

[Explanation of symbols]

 1 Oil Tank 2 Tank Body 3 Oil Inlet 15 Oil Filter 20, 21, 30 Recess

Claims (1)

[Scope of utility model registration request] 1. An oil tank comprising: a tank body for storing oil; and a cylindrical oil filter connected to an oil inlet to the tank body. A recess is formed, one end of the oil filter is inserted into one recess, and the other end of the oil filter is inserted into the other recess,
The inflow port is connected to one end of the oil filter through one of the recesses, the other end of the oil filter is brought into contact with the inner surface of the other recess, and the end of the oil filter is located above at least one of the recesses. An oil tank that can be inserted from.