JP3721537B2 - Protective device for oil passage connection - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a protective device for an oil passage connecting portion for preventing oil leakage and degeneration of the connecting portion in a cylindrical oil passage through which oil flows.In placeRelated.
[0002]
[Prior art]
For cylindrical oil passages through which oils circulate, for example, transformers that convert high voltage to normal working voltage, transformer oil such as mineral oil to insulate and cool the inside of the main body Are connected by a flanged pipe.
The connection part of this pipe is bolted so as not to leak out of the pipe through the packing, but it is further exposed to wind and rain due to heat generation such as Joule loss that occurs during operation of the transformer etc. As a result, the packing deteriorates in a short period of time, and water accumulates in the recesses of each part to cause corrosion, causing oil leakage from that part or from the screw part and through hole part of the bolt and nut. End up.
[0003]
Accordingly, in order to reliably stop this oil leakage, the present inventor provided a covering body that is mounted so as to surround the outer periphery of the connection portion of one and the other casing, and the sealing agent is provided inside the covering body. Provided a protective device for an oil passage connecting portion filled with (see JP-A-9-72486).
Thereby, the oil leakage of the connection part of one and the other housing can be prevented reliably, and the bad influence from the wind and rain was also eliminated.
[0004]
However, when periodically overhauling the transformer, which is an oil passage body for maintenance, etc., the connection part of one and the other housing is removed and disassembled. Since this connection part is a means for preventing oil leakage surrounded by the covering, not only can the connection part be easily removed, but also it takes a relatively long time to reassemble it. However, it has a problem that the construction cost increases.
[0005]
[Problems to be solved by the invention]
The present invention has been made in order to solve the above-described problems, and a first abutting member and a second abutting member which are held in contact with and held around the entire outer peripheral end surfaces of the one and the other casings, respectively. And a connecting member connected to the entire outer periphery of the first butting member and the second butting member. The first butting member and the second butting member are divided in two in the axial direction of the oil passage. The elastic member that elastically abuts against the one housing and the other housing is interposed on the contact surface between the one housing and the other housing, so that leakage can be achieved in a short time by simple construction. Protective device for oil-passing body connecting part that can prevent oil, can form outer shape compactly, and can improve appearancePlaceIt is intended to provide.
[0006]
[Means for Solving the Problems]
The means of the present invention for achieving the above-described object is to connect the housing of one oil passing body and the housing of the other oil passing body at the connecting portion of the oil passing body through which oil flows. A protective device for an oil passage body connecting portion that contacts and couples both housings with a fastening member, and abuts on and holds the entire circumference of the outer peripheral end surfaces of the one housing and the other housing. It consists of a member and a second abutting member, and a connecting member connected to the entire outer periphery of the first abutting member and the second abutting member, and the first abutting member and the second abutting member are The oil passage is formed in two in the axial direction, and an elastic member that elastically abuts against the one housing and the other housing is interposed on the contact surface with the one housing and the other housing., A window hole is opened in the connecting member, and the window hole is freely opened and closed by a lid.It is in the structure of the protective device of the oil-permeable body connection part.
[0008]
And
Oil passage through which the housing of one oil passage and the housing of the other oil passage are brought into contact with each other at a connecting portion of the oil passage through which oil flows, and both housings are coupled by a fastening member. In the body connection protection device,
Bolts in the fastening member that are inserted into the respective communication holes of the one casing and the other casing, and one oil that is attached to an external thread of the bolt and corresponds to the outer surface of the one casing and the other casing A stopper washer body and the other oil stopper washer body, and a nut in the fastening member screwed into the male thread of the bolt protruding from the one housing or the other housing,
The one oil retaining washer body and the other oil retaining washer body are a rubber body whose inner surface is in contact with an outer surface of the one casing and the other casing, and a press body that is covered so as to surround the rubber body. And consist of
In the rubber body, the mounting hole attached to the bolt in the fastening member protects the oil passage body connecting portion in which a female screw that is screwed into the male screw at substantially the same pitch as the male screw is screwed. In the configuration of the device.
[0009]
Also,
On one oil stop washer and the other oil washer,
The pressing body includes an outer surface pressing member that contacts the outer surface of the rubber body in the one oil retaining washer body and the other oil retaining washer body, and extends from the outer peripheral portion of the outer surface pressing member to the outer peripheral surface of the rubber body. An outer peripheral surface pressing member that abuts,
Along with the tightening of the nut and bolt in the fastening member, the rubber body pressed by the outer surface pressing member in the pressing body is compressed by its elasticity so that the inner surface of the rubber body is the outer surface of the one housing and the other housing The rubber body that is in close contact with the outer periphery and that is going to spread outward by the compression is restricted from spreading outward by the outer circumferential surface pressing member of the pressing body, and the mounting hole is directed toward the screw surface of the bolt. Press.
[0010]
Furthermore,
A cap that covers the whole of the one oil stopper washer body and the other oil stopper washer body is bonded to the outer peripheral portion of the one oil stopper washer body and the other oil stopper washer body provided on the outer surface of the one casing and the other casing. Provide by agent.
[0012]
【Example】
Next, the protective device for the oil passage connecting portion according to the present invention.SetAn embodiment will be described with reference to the drawings. 1 and 2, A isThe secondIn the protective device for an oil passage connecting portion according to one embodiment, the oil passage and the connecting portion are piped in a part of or near a transformer for power transmission, or attached to a pipeline. A part of a valve V or the like, which is a conduit through which transformer oil s such as mineral oil is circulated to insulate and cool the interior of the transformer, etc. Bolts that contact the casing 4 of the other oil passing body 3 through a packing 5 such as cork, and the casings 2 and 4 of the pair of oil passing bodies 1 and 3 pass through the communication holes 2a and 4a. It is connected by a fastening member 6 such as a nut. The one housing 2 and the other housing 4 have a circular flange shape, but the outer shape may be rectangular. Although not shown, the present invention can also be applied to an oil passage connecting portion in which the one housing 2 and the other housing 4 are joined by the fastening member 6 with the packing 5 sandwiched in a state where the valve V is not provided. .
[0013]
The above-described protective device A for the oil passage connecting portion includes the first hook member 7 and the second hook that are held in contact with the entire circumference of the outer peripheral end surfaces of the one casing 2 and the other casing 4. The contact member 8 and the connecting member 9 connected to the entire outer periphery of the first contact member 7 and the second contact member 8 are basically configured.
[0014]
In other words, the coverings c and d are formed by the first and second padding members 7 and 8 and the connecting member 9 so as to have a cross-sectional shape (in the case of the upper position, the reverse shape). In the axial direction of the oil passing bodies 1 and 3, it is cylindrical when installed, and before installation, as shown in FIG.
[0015]
Further, in the first flange contact member 7 and the second flange contact member 8, the contact surfaces of the one housing 2 and the other housing 4 are elastically applied to the surfaces of the one housing 2 and the other housing 4. An elastic member 10 in contact therewith is interposed.
[0016]
The elastic member 10 has an inner end portion fitted into the insertion grooves 11 and 12 carved on the inner end surfaces of the first flange member 7 and the second flange member 8, and the outer end portion of the elastic member 10 is the first flange member. The elastic member 10 protrudes from the surfaces of the abutting member 7 and the second saddle abutting member 8, and the elastic member 10 comes into contact with the entire periphery of the peripheral ends of the one casing 2 and the other casing 4.
Even if some irregularities or distortions are generated on the peripheral end surfaces of the one casing 2 and the other casing 4 by the elastic member 10, it can be uniformly contacted to improve the sealing performance, thereby preventing oil leakage or gas leakage. To prevent.
[0017]
The first butting member 7 and the second butting member 8 formed in a half-cylindrical shape are tightened by fastening means 13 such as bolts and nuts at the overlapping portion, while the housing 2 and On the other hand, it is securely fixed to the housing 4, and as shown in FIGS. 1 and 4, as shown in FIG. 1 and FIG. Bolts 18 are passed through the holes 16 and 17 and fastened with nuts 19.
[0018]
In addition, in the transformer oil s in the oil passing bodies 1 and 3, the distribution is such that oil feeding and stopping are appropriately performed. As shown in FIG. 1, one housing 2 and the other housing 4. Opening and closing operations are performed by a valve V disposed between the two. The valve V is opened and closed by rotating the operation knob 20 projecting from one end thereof.
Therefore, in order to smoothly operate the operation knob 20 of the valve V, as shown in FIG. 6, a window hole 21a is opened at a convex portion 21 provided at an appropriate position of the connecting member 9, and the operation knob is opened from the window hole 21a. It is convenient if the window hole 21a is opened and closed freely by the lid body 22. The lid body 22 is attached and detached by a fastening member 23 such as a screw.
[0019]
Further, when the first butting member 7 and the second butting member 8 are in contact with the one housing 2 and the other housing 4, the sealing agent 24 is placed between the two housings 2, 7 and 4, 8. Apply and interpose.
The sealing agent 24 is composed of a liquid A and a liquid B. Of these, the liquid A is used as a base (main agent) of the sealing agent 24 by a paint, an adhesive, or the like. A liquid modified epoxy resin (bisphenol A type epoxy resin or polysulfide liquid modified epoxy resin) and aluminum oxide powder for obtaining sufficient heat resistance against heat generated by a transformer or the like are mixed at a predetermined ratio.
The epoxy, which is the main component of the liquid A, is not particularly limited in terms of molecular structure, but it is liquid in the state of a monomer or has fluidity when dissolved in a small amount of an organic solvent. In addition, it is desirable to have flexibility after the sealing agent 24 is cured.
The above-mentioned B liquid is used as a curing agent for the A liquid. The liquid polymercaptan as a base, a liquid tertiary amine, a reinforcing agent for the amine, and a light carbonic acid for increasing the base. An inorganic filler such as calcium is mixed with oxalic acid aluminate at a predetermined ratio in order to obtain impact resistance, weather resistance, fluidity adjustment, or imparting thixotropy.
As mentioned above, the main component polymercaptan is in a liquid state and has an acceleration of curing and moderate fluidity, and by adding a tertiary amine, the epoxy resin can be rapidly used at room temperature or at a relatively low temperature. It can be cured and has the property of imparting flexibility to the epoxy resin after curing.
[0020]
Further, when the one casing 2 and the other casing 4 are connected by the fastening member 6, the leakage of the transform oil s is prevented from the communication holes 2a and 4a formed in the one casing 2 and the other casing 4. Therefore, the oil stopper washer body 25 is used, and the rubber body 27 to which the bolts 26 of the fastening member 6 are screwed is brought into contact with the outer surfaces of the one housing 2 and the other housing 4, and this rubber body 27. A presser body 28 that is covered so as to surround is attached, and a flat washer 29 is attached to the outer surface of the presser body 28 and tightened with a nut 30.
[0021]
Thereby, oil leakage from the communication holes 2a and 4a is prevented by the rubber body 27 being in close contact with the outer surface of the one housing 2 and the other housing 4 and the screw of the bolt 26.
Further, since the pressing body 28 is pressed by the flat washer 29, the tightening force of the nut 30 is evenly transmitted to the entire rubber body 27, thereby further preventing oil leakage.
[0022]
In FIG. 1, reference numeral 31 denotes an insertion hole for pressurized air, in which one casing 2 and the other casing 4 are surrounded by the first butting member 7, the second butting member 8 and the connecting member 9. The pressure inside the enclosure can be inspected by sending pressurized air inside.
That is, when pressurized air is pumped from the insertion hole 31 and the sealing performance is poor, air leaks from around the one housing 2 and the other housing 4, and the cause of the leakage of the portion is It investigates and adjusts the adhesion degree of the elastic member 10, application | coating adjustment of the sealing agent 24, or the fastening adjustment of the fastening member 6 or the fastening member 13.
[0023]
Therefore, the protection device A and method for the oil passage connecting portion according to the above-described embodiment have the following effects.
First, the housing 2 of one oil passage 1 and the housing 4 of the other oil passage 3 are brought into contact with each other via a packing 5 such as cork after the valve V is sandwiched therebetween.
[0024]
The one housing 2 and the other housing 4 are fastened by the fastening member 6, and the oil retaining washer body 25 is attached to the head side of the bolt 26 in the fastening member 6, and the one housing 2 and the other housing 4 are attached. After passing through the through-holes 2a and 4a, the oil stopper washer 25 is further attached to the outer end of the bolt 26, and the nut 30 is screwed into the bolt 26 with the plain washer 29 and fastened. The body 2 and the other housing 4 are fastened by a fastening member 6.
At this time, if the inner hole 27a of the rubber body 27 in the oil stopper washer 25 is formed into a female screw shape that is screwed in close contact with the male screw of the bolt 26, the transformer oil s It does not leak through.
[0025]
In this state, the sealing agent 24 is uniformly applied to the outer peripheral end surfaces of the casing 2 of the one oil passing body 1 and the casing 4 of the other oil passing body 3 so as to form a predetermined thickness layer. On the other hand, the first butting member 7 and the second butting member 8 in the coverings c and d divided in half are applied to the peripheral end surfaces of the housing 2 and the other housing 4 so that the elastic members 10 and 10 have a constant pressing force. Is crushed by and made to correspond evenly.
Note that the sealing agent 24 is also applied to a predetermined thickness (predetermined amount) on the two contact end surfaces of the covers c and d. (See Figure 4)
[0026]
Then, if the cover members c and d are fastened by the fastening member 13 in the attachment members 14 and 15, the first butting member 7 and the second butting member 8 in the covering members c and d are replaced with the one housing 2 and On the other hand, it contacts the outer peripheral end surface of the housing 4 in a close contact state without causing a gap in the contact surface.
[0027]
As a result, even if the leakage of the transform oil s from the packing 5 portion of the one casing 2 and the other casing 4 occurs, the outer peripheral end surfaces of the one casing 2 and the other casing 4 are provided with the elastic member 10 therebetween. The first butting member 7 and the second butting member 8 are in contact with each other, so that leakage outside the covers c and d is prevented, and a transformer failure or fire due to oil leakage, or appearance The appearance of is not reduced.
[0028]
In addition, the elastic members 10 and 10 provided on the first butting member 7 and the second butting member 8 are not easily deteriorated because the periphery of the elastic members 10 and 10 is not directly contacted with oil or air by applying the sealing agent 24. It is possible to exhibit sufficient weather resistance for use over a long period of time.
[0029]
The transformer oil s accumulated in the covers c and d can be taken out from the window hole 21a as appropriate. If the window hole 21a is provided below, the workability is further improved.
[0030]
Next, a second embodiment of the oil passage connecting portion protection apparatus according to the present invention will be described with reference to FIGS.
In the second embodiment of the present invention, the connecting portion of the oil passing bodies 1 and 3 which are pipelines connected to each other, that is, the one housing 2 and the other housing such as the flanges of the oil passing bodies 1 and 3 are provided. This is a protective device A for an oil passage connecting portion showing an example in which the oil stopper washers 25a and 25b are provided on the outer side of the body 4.
That is, at the connecting portion of the oil passing bodies 1 and 3 through which oils circulate, the housing 2 of the one oil passing body 1 and the housing 4 of the other oil passing body 3 are brought into contact with each other. Bolts in the fastening member 6 that are inserted into the respective communication holes 2a and 4a of the one housing 2 and the other housing 4 in the protective device A for the oil passage connecting portion that couples the bodies 2 and 4 by the fastening member 6. 26, one oil retaining washer body 25a and the other oil retaining washer body 25b, which are attached to the male thread of the bolt 26 and correspond to the outer surfaces of the one housing 2 and the other housing 4, and the one housing 2 or the other The nut 30 in the fastening member 6 screwed with the external thread 26a of the bolt 26 protruding from the housing 4 is provided.
The communication holes 2a and 4a are formed in the one housing 2 and the other housing 4 in a large number of intervals, and the oil passages of the present embodiment are formed in the communication holes 2a and 4a. A protective device A for the connection is provided.
[0031]
The one oil retaining washer body 25a and the other oil retaining washer body 25b are composed of rubber bodies 27a and 27b whose inner surfaces are in contact with the outer surfaces of the one housing 2 and the other housing 4, and the rubber body 27a. , 27b, and presser bodies 28a, 28b covered so as to surround them.
[0032]
The rubber bodies 27a and 27b have heat resistance, oil resistance, wear resistance, aging resistance, and the like. For example, the rubber bodies 27a and 27b are formed by blending vinyl chloride resin with NBR rubber (acrylonitrile butadiene rubber) as a base material. It is formed into a circular shape, a square shape, or the like with a predetermined thickness, for example, a thickness of about 3 mm to 10 mm.
[0033]
Further, in the rubber bodies 27a and 27b, the mounting holes 40 attached to the male screw 26a of the bolt 26 in the fastening member 6 have substantially the same pitch as the male screw 26a of the bolt 26 as shown in FIGS. (The valley shape and the mountain shape are substantially the same shape), and female screws 43a and 43b to be screwed into the male screw 26a are screwed.
[0034]
Further, in the one oil retaining washer body 25a and the other oil retaining washer body 25b, the pressing bodies 28a, 28b are made of metal, for example, made of stainless steel having weather resistance, etc. The outer surface pressing members 41a and 41b that contact the outer surfaces of the rubber bodies 27a and 27b in the oil retaining washer body 25a and the other oil retaining washer body 25b, and the outer surface pressing members 41a and 41b are extended from the outer peripheral portion of the rubber. The outer peripheral surface pressing members 42a and 42b have a shape corresponding to substantially the entire outer peripheral surface of the bodies 27a and 27b and abut against the outer peripheral surface.
Further, through holes 48a and 48b through which the male screw 26a of the bolt 26 is inserted are formed in the center portion.
[0035]
With the rubber bodies 27a and 27b and the pressing bodies 28a and 28b in the one oil retaining washer body 25a and the other oil retaining washer body 25b, the nuts 30 and the bolts 26 in the fastening member 6 are tightened together. The rubber bodies 27a and 27b pressed by the outer surface pressing members 41a and 41b are compressed by their elasticity, and the inner surfaces of the rubber bodies 27a and 27b are in close contact with the outer surfaces of the one housing 2 and the other housing 4, Further, the rubber bodies 27a and 27b trying to spread outward due to the compression are bolted to the mounting holes 40a and 40b while being restricted from spreading outward by the outer peripheral surface pressing members 42a and 42b of the pressing bodies 28a and 28b. 26 is made to press against the surface of the male screw 26a.
When the rubber bodies 27a, 27b and the pressing bodies 28a, 28b are fitted, the inner surface m of the rubber bodies 27a, 27b and the inner edge n of the pressing bodies 28a, 28b have a predetermined dimension s ( The dimensions of the rubber bodies 27a and 27b are set so that the inner surface m of the rubber bodies 27a and 27b protrudes from the inner edge n of the pressing bodies 28a and 28b so that a compression margin is formed.
[0036]
Further, the one oil stop washer 25a and the other oil stop washer are provided on the outer peripheral portions of the one oil washer 25a and the other oil washer 25b provided on the outer surfaces of the one case 2 and the other case 4, respectively. A cap 44 that covers the entire 25b may be provided by the adhesive 45.
[0037]
The cap 44 is formed of a synthetic resin or the like having a concave cross section, and the one oil stopper washer body 25a and the other oil stopper washer body 25b as well as the one oil stopper washer body 25a and the other oil stopper washer 25a. The nut 30 and the head 26b of the bolt 26 are also provided so as to cover the outer portion of the stopper washer 25b.
On the other hand, for fixing the housing 2 and the other housing 4 to the outer surface, an adhesive 45 is used, and the adhesive 45 is made of a conventional material such as an epoxy resin. However, the sealing agent 24 described above may be used.
By using the cap 44, the one oil washer 25a and the other oil washer 25b are not directly exposed to the outside air, direct sunlight, wind and rain, etc., so that it has excellent weather resistance and greatly improves its service life. The stopping effect can be extended as much as possible.
[0038]
Therefore, the oil-permeable-body connection portion protection device A according to the second embodiment described above has the following effects.
First, the housing 2 of one oil passage 1 and the housing 4 of the other oil passage 3 are connected through a packing 5 such as cork provided so as to correspond to the contact surfaces of these housings 2 and 4. Abut. At this time, the sealing agent 24 is uniformly applied to each contact surface of the packing 5.
[0039]
The one casing 2 and the other casing 4 are fastened by the fastening member 6, and the other oil retaining washer 25 b is connected to the head 26 b side of the bolt 26 in the fastening member 6 via the spring washer 46 and the flat washer 29. Install.
At this time, as shown in FIGS. 8 and 11, it is preferable to use a full screw type in which the male screw 26a is provided over the entire length of the male screw 26a.
Then, the outer end portion of the bolt 26 projecting in a state where the male screw 26a is projected to the outer surface of the one housing 2 through the screw 26a through the communication holes 4a, 2a of the other housing 4 and the one housing 2. If the one oil retaining washer 25a is attached, the plain washer 29 and the spring washer 46 are attached, and the nut 30 is screwed to the bolt 26 and fastened, the one housing 2 and the other housing 4 are the fastening members. 6 tightens.
[0040]
When attaching the mounting holes 40a and 40b of the rubber bodies 27a and 27b of the one oil retaining washer body 25a and the other oil retaining washer body 25b to the male screw 26a of the bolt 26, the fittings of the mounting holes 40a and 40b are arranged. The screws 43a and 43b and the male screw 26a are screwed together so that the female screws 43a and 43b and the male screw 26a are pressed into close contact with each other by the elastic force of the rubber bodies 27a and 27b.
In addition to the screwing operation, the insertion can be performed by pushing the elastic bodies 27a and 27b.
[0041]
More specifically, in the one oil retaining washer body 25a and the other oil retaining washer body 25b, when the bolt 26 and the nut 30 are tightened, the pressing force by the nut 30 is passed through the spring washer 46 and the plain washer 29. , 28b. (Refer to FIG. 12, and in the same figure, only the one oil washer 25a side is shown, but the same action is performed even on the other oil washer 25b side.)
[0042]
Then, the outer surface pressing members 41a and 41b of the pressing bodies 28a and 28b strongly press the outer surfaces of the rubber bodies 27a and 27b in the direction of the arrow g in FIG. The rubber bodies 27a and 27b that are in contact with the outer surface of the one housing 2 and the other housing 4 are compressed by being sandwiched between the outer surface pressing members 41a and 41b and the inner surfaces m of the rubber bodies 27a and 27b. Strong adhesion to the outer surface of the housing 2 and the other housing 4 is exhibited.
Therefore, the rubber bodies 27a and 27b tend to bulge in the directions of arrows h and i in the same figure, but the outer peripheral surface pressing members 42a and 42b in the one oil retaining washer body 25a and the other oil retaining washer body 25b are rubber bodies. 27a, 27b is in contact with the outer peripheral surface of the outer peripheral surface 27b and restricts its bulging, so that the bulging output is applied to the outer surface pressing members 42a, 42b and the female screws 43a, 43b in the mounting holes 40a, 40b. The surface and the male screw 26a surface of the bolt 26 are brought into close contact with each other, and in particular, the expansion force in the direction of the arrow i in the figure is doubled, and the close contact force between the female screws 43a and 43b and the male screw 26a surface is exhibited. Is done.
[0043]
Therefore, the transforming oil s that is about to leak from the communication holes 2a and 4a leaks out between the outer surface of the one housing 2 and the other housing 4 and the inner surface m of the rubber bodies 27a and 27b. And the leakage of the transformer oil s between the female threads 43a and 43b of the mounting holes 40a and 40b of the rubber bodies 27a and 27b and the male thread 26a of the bolt 26 is prevented. The
At this time, it is not necessary to apply the sealing agent 24 to the contact portions of the one oil retaining washer body 25a and the other oil retaining washer body 25b with the one housing 2 and the other housing 4 or in the vicinity thereof.
[0044]
It should be noted that the one oil washer 25a and the other oil washer 25b are provided on the outer peripheral portions of the one oil washer 25a and the other oil washer 25b provided on the outer surfaces of the one case 2 and the other case 4. By providing the cap 44 with the adhesive 45, the one oil stopper washer body 25a and the other oil stopper washer body 25b are protected, and the durable life thereof is improved.
[0045]
That is, it is provided so as to cover the one oil retaining washer body 25a, the other oil retaining washer body 25b, and the nut 30 and the head portion 26b of the bolt 26 located on the outer side thereof. The cap 44 is placed on the outer surface of the one housing 2 and the other housing 4 by contacting the outer surface of the one housing 2 and the other housing 4 and applying an adhesive 45 in the vicinity of the contact portion. It is fixed.
Thereby, since the one oil stopper washer body 25a and the other oil stopper washer body 25b located in the cap 44 are not directly affected by wind and rain or strong sunlight, they are not adversely affected by them, Since interference with other objects is also prevented, extremely high weather resistance and the like are exhibited, and the durability life can be improved.
[0046]
In the protective device A for the oil passage connecting portion according to the second embodiment of the present invention, the oil passages 1 and 3 are connected to each other by the bolt 26 and the nut 30 in the fastening member 6. Of course, it can be applied and adopted in the case of fastening.
[0047]
【The invention's effect】
As described above, the present invention tends to be adversely affected by wind and rain etc. in the oil passing body, and is provided so as to cover the one casing and the other casing with respect to the connecting portion of the oil leakage location. Since it is covered and the portion can be protected from wind and rain, weather resistance is improved, and oil leakage such as packing due to corrosion or premature aging can be prevented.
In addition, since the structure for oil leakage is simple, the oil leakage prevention work can be performed in a short time and surely, and the appearance can be finished very well.
[0048]
In particular, by providing the one oil retaining washer body and the other oil retaining washer body corresponding to the outer surfaces of the housing of one oil passage body and the housing of the other oil passage body, Oil that tries to leak to the outside from the communication hole of the housing prevents the oil from leaking between the outer surface of the one housing and the other housing and the inner surface of the rubber body due to the close contact of the rubber body. In addition, the occurrence of oil leakage between the female thread surface in the mounting hole of the rubber body and the male thread surface of the bolt is prevented.
Furthermore, by providing a cap so as to cover the outer peripheries of the one oil retaining washer and the other oil retaining washer, the one oil retaining washer and the other oil retaining washer are not directly affected by wind and rain or strong sunlight. The durability life can be improved. And so on.
[Brief description of the drawings]
FIG. 1 relates to the present invention.RuIt is a half sectional view of the important section showing the 1st example of the protection device of an oil body connection part.
2 is a cross-sectional view taken along the line XX of the protective device for the oil passage connecting portion in FIG. 1. FIG.
3 is a perspective view showing a cover of a protective device for an oil passage body connecting portion in FIG. 1. FIG.
4 is a cross-sectional view of a main part showing a fastening state of a split part of the protection device for an oil passage body connection part in FIG. 1. FIG.
5 is a cross-sectional view of a main part showing a contact state of an elastic member of a protection device for an oil passage body connecting portion in FIG. 1. FIG.
6 is a cross-sectional view of the main part showing a window hole provided in the cover of the protective device for the oil passage body connecting portion in FIG. 1;
7 is a cross-sectional view of the main part showing the fastening state of one and the other housings of the protective device for the oil passage body connecting portion in FIG. 1. FIG.
FIG. 8 is a half cross-sectional view of a main part showing a second embodiment of the protection device for an oil passage connecting portion according to the present invention.
9 is an exploded perspective view showing first and second oil stopper washers of the protective device for the oil passage connecting portion in FIG. 8. FIG.
10 is a longitudinal sectional view showing first and second oil retaining washers of the protective device for the oil passage connecting portion in FIG. 8. FIG.
11 is a half cross-sectional view of the main part showing an example in which a cap is provided in the protective device for the oil passage body connecting portion in FIG. 8. FIG.
12 is a cross-sectional view of the main part showing the operating state of the first oil stopper washer of the protective device for the oil passage connecting portion in FIG. 8;

Claims (4)

Oil passage through which the housing of one oil passage and the housing of the other oil passage are brought into contact with each other at a connecting portion of the oil passage through which oil flows, and both housings are coupled by a fastening member. In the protection device for the body connecting portion, the first butting member and the second butting member that come into contact with and hold the entire circumference of the outer peripheral end surfaces of the one and the other housings, and these first fittings A connecting member connected to the entire outer periphery of the member and the second padding member, wherein the first padding member and the second padding member are formed in two in the axial direction of the oil passage, On the contact surface between the one housing and the other housing, an elastic member that elastically contacts the one housing and the other housing is interposed , A protective device for an oil passage connecting portion, wherein a window hole is opened in the connecting member, and the window hole is opened and closed by a lid .  Oil passage through which the housing of one oil passage and the housing of the other oil passage are brought into contact with each other at a connecting portion of the oil passage through which oil flows, and both housings are coupled by a fastening member. In the protection device for the body connecting portion, the bolt in the fastening member inserted into the respective communication holes of the one housing and the other housing, and the one housing and the other housing attached to the thread of the bolt One oil retaining washer and the other oil retaining washer corresponding to the outer surface of the body, and a nut in the fastening member that is screwed into the male screw of the bolt protruding from the one housing or the other housing. The one oil retaining washer body and the other oil retaining washer body are covered with a rubber body whose inner surface abuts against an outer surface of the one housing and the other housing, and surrounds the rubber body. The rubber body, and the fastening portion Mounting hole attached to the bolt in the oil passing body connecting part of the protective device, characterized in that you have screwed an internal thread to be screwed into the male thread in the male screw and substantially the same pitch of the bolt. In the one oil stop washer and the other oil stop washer, the presser body is an outer surface pressing member that contacts the outer surface of the rubber body in the one oil stopper washer and the other oil stopper washer, and the outer surface pressing member. An outer peripheral surface pressing member that extends from the outer peripheral portion of the rubber member and abuts against the outer peripheral surface of the rubber body, and is pressed by the outer surface pressing member of the pressing body when the nut and the bolt in the fastening member are tightened. The rubber body is compressed by its elasticity, the inner surface of the rubber body is in close contact with the outer surface of one housing and the other housing, and the rubber body that is going to spread outward by the compression is The oil passage connecting portion protection device according to claim 2 , wherein the mounting hole is pressed against the screw thread surface of the bolt while the outward spreading is restricted by the outer peripheral surface pressing member. A cap that covers the whole of the one oil stopper washer body and the other oil stopper washer body is bonded to the outer peripheral portion of the one oil stopper washer body and the other oil stopper washer body provided on the outer surface of the one casing and the other casing. The device for protecting an oil passage connecting portion according to claim 2 or 3 , wherein the protective device is provided by an agent.

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