JPH0543356Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a small-sized hydraulic pipe joint with a filter, in which a filter is incorporated into the hydraulic pipe joint.

[Conventional technology]

Conventionally, there is an example of installing a filter in a hydraulic piping passage as disclosed in Japanese Patent Application Laid-Open No. 60-245803, but when installing a hydraulic filter in a general vehicle, etc., the filter is mainly installed as shown in Fig. 4. A line type oil filter 100 has been used. Here, 101 is a perforated cylinder, 102 is a filter element provided around the perforated cylinder 101, and these perforated cylinder 101 and filter element 10
2 is housed in a case 103, and the oil is guided from the filter inlet 104 through the inner circumference of the case 103 to the filter element 102, where it is filtered, and then collected in the perforated tube 101 and sent to the filter outlet. 105.

[The problem that the idea attempts to solve]

However, since such conventional oil filters have a T-shaped shape, when modern vehicles are equipped with many hydraulic units such as power steering systems and four-wheel steering systems, it is difficult to install them on-board. Due to space constraints, there was no room to incorporate the above-mentioned filters into each unit, and even if one were to be incorporated, at most one filter in total would be required. However, on the other hand, there is the problem of contamination that tends to occur in these individual units, and therefore,
There has been a strong demand for a small oil filter that can be relatively easily installed anywhere in a hydraulic piping system.

The purpose of the present invention is to focus on the above-mentioned conventional problems, and in order to solve them, to provide a hydraulic pipe joint with a filter that is compact and whose mounting position can be selected relatively freely in the middle of a hydraulic piping system. There is a particular thing.

[Means to solve the problem]

In order to achieve such an object, the present invention provides a hydraulic pipe joint with a filter in which a filter element is housed in an oil passage formed in the shaft part of a bolt-type male joint member having a threaded part. The oil passage has a bag-like shape with an opening at the bottom, and the end of the opening is attached to an outer casing having spring properties and housed in the outer casing, and the outer casing is fitted to a peripheral wall of the oil passage. It is characterized by what it did.

[Effect]

According to the present invention, the hydraulic pipe can be connected by simply fitting the female joint member in which the oil passage is formed into the shaft part and screwing the threaded part to the connection part of the hydraulic unit in which the oil passage is formed. Oil filtration can be performed while maintaining the function of the joint, and since it does not require a large space and can be handled like a normal joint, filter replacement is easy and inexpensive.
In particular, it can contribute to the maintenance and management of hydraulic units in vehicles and the like.

〔Example〕

Embodiments of the present invention will be specifically described below based on the drawings.

FIG. 1 shows an embodiment of the present invention. Here, 1
is a bolt-shaped male joint member having a hexagonal head 2, the shaft portion 3 has a cylindrical portion 3A and a threaded portion 3B, and the cylindrical portion 3A has an oil passage 4A penetrating in an angular direction with respect to the axis. is drilled. Also, 4
B is an oil outlet passage that is bored along the axis from the end of the shaft portion 3 and communicates with the oil passage 4A;
Reference numeral 5 designates an oil filter element that is fitted along this oil outlet passage 4B and is firmly held on the surrounding wall by the spring properties of its outer casing 5A.

In contrast to such a joint member 1, reference numeral 6 indicates an example of a female joint member that is fitted into the cylindrical portion 3A. The female joint member 6 has a scoop shape as shown in FIG. 2, and has a hole 6A in the center into which the cylindrical portion 3A fits, and an oil inlet passage 6B communicating with the hole 6A in the portion corresponding to the handle. Thus, the annular packings 8 and 9 are interposed between the upper surface of the male joint member 1 and the female joint member 6 and between the lower surface of the female joint member 6 and, for example, the fixing nut 7, respectively, and the fixing nut 7 is
By screwing and fastening the threaded portion 3B of the male joint member 1, it can be used as a hydraulic piping joint having a filter element 5.

Although not shown, the end of the outlet oil pipe may be connected to the shaft end 3C of the male coupling member 1 using a cap nut-shaped coupling member, for example, with an annular packing interposed therebetween, or the fixing nut 7 itself may be connected to the shaft end 3C of the male coupling member 1. The end of the outlet oil pipe may be connected as a cap-nut-shaped coupling member, and furthermore, the threaded portion 3B of the male coupling member 1 may be directly screwed into the wall of the hydraulic unit in which the oil passage hole is formed. It can also be fixed with

In the oil filter with a hydraulic pipe joint configured in this way, the filter is provided using joint hardware that is generally used in this type of hydraulic pipe system (not shown), so the selection range of the number and mounting position is limited. The degree of freedom can be obtained, and it can greatly contribute to preventing the spread of contamination in various hydraulic units used in vehicles.

FIG. 3 shows another embodiment of the invention. This example is the same as the example shown in FIG. 1, except that the orientation of the oil filter element 5 and the oil flow path (the direction is indicated by an arrow) are opposite, and only the male joint member 1 is shown here. ing. Therefore, in the case of this example, the shaft hole drilled in the shaft portion 3 of the male joint member 1 from the shaft end portion 3C becomes the oil inlet passage 4C, and the filter element 5 is connected from the oil inlet passage 4C.
The oil led to the oil passage 4A through the oil passage 4A is sent out from an oil outlet passage (corresponding to the oil inlet passage 6B in FIG. 1) of the female joint member 6, which is not shown here.

[Effect of idea]

As explained above, according to the present invention, the filter element has a bag-like shape having an opening in a part thereof, and the end of the opening is attached to the outer casing having spring properties. It is accommodated,
In addition, since the outer casing is constructed by fitting into the surrounding wall of the oil passage, it can be assembled by simply fitting the outer casing having spring properties into the surrounding wall of the oil passage, and the filter element can be attached. It can be said that the pipe joint has a simple structure and is easy to install, since it can be installed using a part of the outer casing for installing the oil element on the peripheral wall of the oil passage without the need for bolts or the like. Because of the simple structure of this pipe joint, it can be said that it is a small hydraulic pipe joint with a filter, and it is possible to share pipe joints and install ones with common specifications in each part of the hydraulic system. It can be used in vehicle systems with multiple hydraulic units to prevent oil from becoming dirty or deteriorated, and because it is easy to replace, it can contribute to system maintenance at low cost.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an example of the configuration of the present invention, FIG. 2 is a perspective view of the female joint member shown in FIG. 1, and FIG. 3 is a cross-sectional view of a male joint member according to another embodiment of the present invention. , FIG. 4 is a sectional view showing an example of the configuration of a conventional oil filter. 1...Male joint member, 3...Shaft part, 3A...Cylindrical part, 3B...Threaded part, 4A...Oil passage, 4B
...Oil outlet passage (oil passage), 4C...Oil inlet passage (oil passage), 5...Oil filter element, 5A...Outer casing, 6...Female joint member.

Claims (1)

[Scope of utility model registration request] A hydraulic pipe joint with a filter in which a filter element is housed in an oil passage formed in a shaft portion of a bolt-type male joint member having a threaded portion, wherein the filter element has a bag shape with an opening in a part and A hydraulic pipe joint with a filter, characterized in that the opening end is attached to and housed in an outer casing having spring properties, and the outer casing is fitted to a peripheral wall of the oil passage.