JP3216243B2 - Solenoid valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid valve used for allowing or stopping the supply of lubricating oil to a motorcycle engine.

[0002]

2. Description of the Related Art In motorcycles, lubricating oil is usually supplied from an oil pump to the engine in order to lubricate the engine. In the above configuration, conventionally, a solenoid valve is provided in an oil passage from the oil pump to the engine, and the solenoid valve is repeatedly opened and closed at a pitch corresponding to the operation state of the engine,
There is one in which an amount of lubricating oil corresponding to the operation state of the engine is supplied. In the above case, if the supply amount of the lubricating oil to the engine becomes excessive or insufficient, inconveniences such as white smoke and burning occur, so that the supply amount is required to have high accuracy. Also, since the power generation capacity of a motorcycle is small,
The required power of the solenoid valve is kept small, and it is required that the solenoid valve be as small as possible. For this reason, the solenoid valve is manufactured with extremely high precision, for example, the fluid passage in the solenoid valve is formed thin.

[0003]

In the case where the fluid passage of the solenoid valve is clogged with dust, it is conceivable to disassemble and clean the fluid passage. However, as described above, the solenoid valve is a precision one. Therefore, in the reassembly, the operation for reproducing the original accuracy is extremely complicated.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. After disassembly of a solenoid valve for maintenance and inspection, the solenoid valve is reassembled to obtain the original accuracy. The purpose is to be able to do by a simple task.

[0005]

[SUMMARY OF] To achieve the above object has as characteristic of the invention, the valve case 36, this
Of the resin case forming a part of the outer shell of the valve case 36
One case 37 and a resin constituting another part of the outer shell portion
Case 38, and the first and second cases 37,
38, a bolt (a fastener ) 35a for removably fastening the first and second cases 37 , 38 and the frame plate 39 to each other.
Of the first and second cases 37 and 38.
At least one of the cases has a solenoid 5 inside.
2 and a magnetic plate 53 forming a magnetic circuit of the solenoid 52
The above-mentioned frame plate
39 and one of the magnetic plates 53 is formed with a protrusion 53a , and the other plate is formed with a concave portion 39a which is removably fitted with the protrusion 53a .

[0006]

[Operation] The operation of the above configuration is as follows. Note that the terms in parentheses described below correspond to the terms in the claims. The valve cases 36 of the solenoid valves 33 and 34 are composed of first and second cases 37 and 38 made of resin, a frame plate 39 made of metal , and first and second cases 3.
7 and 38 and a bolt (fastener) 35a for removably fastening the frame plate 39 to each other .
At least one of the second cases 37 and 38
A solenoid 52 is provided inside the case, and the solenoid 52
A magnetic plate 53 for forming a magnetic circuit of the type described above is accommodated. A projection 53a is formed on one of the frame plate 39 and the magnetic plate 53, and the projection 53a is removably fitted on the other plate. A matching recess 39a is formed. For this reason, when the solenoid valves 33 and 34 are disassembled for maintenance and inspection or the like and then reassembled, the recesses 39a and the projections 53a are engaged with each other while fitting them together .
It is sufficient to assemble the first and second cases 37 and 38 and the frame plate 39. In this way, the first and second cases 3
The positioning of the case in which the magnetic plate 53 among the cases 7 and 38 is accommodated and the frame plate 39 are automatically performed, and the original accuracy is reproduced.

In the above reassembly, the first,
The magnetic plate 53 of the second cases 37 and 38 is accommodated therein.
The recessed portion 39a and the projection 53a that enable the positioned case and the frame plate 39 to be positioned with respect to each other are provided with the solenoid valves 33, 3
4 is provided by utilizing the components. For this reason, when the above-mentioned positioning is enabled, an increase in the number of parts is prevented. In addition, the recesses 39a and the projections 53a which are fitted to each other are both made of the metal frame plate 3.
9 and the magnetic plate 53. Therefore, even if these are repeatedly inserted and removed, wear can be reduced.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIGS. 1 to 6 show Embodiment 1. FIG.
In FIG. 2, reference numeral 1 denotes a motorcycle which is a straddle-type vehicle, and an arrow Fr in the figure indicates the front, and the left and right described below refer to the direction toward the front. The front frame 4 of the motorcycle 1 has a front wheel supporting a front wheel 4 and a handle 5 via a front fork 3, and a rear portion supports a rear wheel 8 via a rear arm 7. A seat 9 is mounted on the rear upper surface of the vehicle body frame 2.

In FIG. 1 to FIG. 3, an engine 11 is supported on the vehicle body frame 2.
1 drives the rear wheel 8. This engine 11 is a pre-compression type two-cycle two-cylinder engine, and a crankcase 12
And a left cylinder 13 projecting forward and upward from the crankcase 12 and a right cylinder 14 projecting forward and downward from the crankcase 12.

An intake port is formed on the rear side of the crankcase 12 corresponding to the left cylinder 13, and a reed valve, an intake pipe 16a, and a left carburetor 16 are formed in the intake port.
Are connected. On the other hand, an intake port is formed above the crankcase 12 corresponding to the right cylinder 14, and a reed valve, an intake pipe 17a, and a right carburetor 17 are connected to the intake port. Reference numeral 18 denotes a spark plug, 19 denotes a fuel tank, 20 denotes an exhaust pipe, and 24 denotes an air cleaner for the right cylinder 14.
Is mounted on the body frame 2 and / or the crankcase 12 side.

When the engine 11 operates, outside air 21 is sucked into the crankcase 12 through the left carburetor 16, the right carburetor 17, and each reed valve sequentially. The fuel from the fuel tank 19 is mixed with the outside air 21 through the left carburetor 16 and the right carburetor 17, and this mixture is pre-compressed in the crankcase 12, and is mixed in the left cylinder 13 and the right cylinder 14. For combustion.

2 and 4, a lubricating oil supply device 23 for supplying a lubricating oil 22 into the engine 11 is provided. The lubricating oil supply device 23 has a reciprocating oil pump 25, and the oil pump 25
2 is detachably screwed to the right side wall. The oil pump 25 is driven by the engine 11 in synchronization with the rotation speed of the engine 11, that is, the oil pump 25 discharges an amount of the lubricating oil 22 corresponding to the rotation speed of the engine 11.

A lubricating oil 2 is provided at the rear of the body frame 2.
The lubricating oil 22 in the oil tank 26 is supplied to the oil pump 25 through an oil supply pipe 27. The oil supply pipe 27 is formed of a flexible resin tube. An oil filter 28 is provided in the middle of the oil supply pipe 27,
The oil filter 28 prevents foreign matter such as dust from flowing into the oil pump 25.

A first oil pipe 30 and a second oil pipe 31, which are oil passages for guiding the lubricating oil 22 discharged from the oil pump 25 into the crankcase 12 of the engine 11, are provided.
Each of the first oil pipe 30 and the second oil pipe 31 is formed of a flexible resin tube.

The first oil pipe 30 and the second oil pipe 31 are respectively connected to upstream pipes 30a and 31a on the oil pump 25 side.
And downstream pipes 30b, 3b on the intake pipes 16a, 17a side.
1b. A first solenoid valve 33 and a second solenoid valve 34 are interposed between these divided ends, respectively, and these solenoid valves 33 and 34 are both disposed at a lower position than the oil tank 26. The first solenoid valve 33 and the second solenoid valve 34 can open and close the first oil pipe 30 and the second oil pipe 31, respectively.
The lubricating oil supply port 30c of the first oil pipe 30, which is the end on the engine 11 side, communicates with the intake pipe 16a corresponding to the left cylinder 13, while the lubricating oil supply port 31c of the second oil pipe 31 is , Intake pipe 17a corresponding to right cylinder 14
Communicates within.

In the above case, as shown in FIGS. 1 and 2,
The first solenoid valve 33 and the second solenoid valve 34 are
The air cleaner 24 is detachably screwed to a bracket 35 attached to a cleaner case of the air cleaner 24 by bolts 35a. Although not shown, the first and second
A damper is interposed between the solenoid valves 33 and 34 and the air cleaner 24.

Referring to FIGS. 1, 5 and 6, the first solenoid valve 33 and the second solenoid valve 34 will be described in detail. Since both of these are the same in shape and size, the first solenoid valve 33 will be mainly described, and the second solenoid valve 34 will be described with parentheses. The first solenoid valve 33 (the second solenoid valve 3)
4) has a valve case 36. This valve case 36
The first case 37 made of a resin plate, which constitutes a part of the outer shell of the valve case 36, is provided outside the valve case 36.
Constitute the other part of the shell, and the second case 38 made of resin cylindrical located below the first case 37, it is interposed between these first casing 37 and second casing 38 Frame plate 39 made of rigid metal and made of magnetic material
When, and a the first case 37, the fastener serving the bolt 35a of the second case 38, and a frame plate 39 to one another to removably fastened.

The first case 37 has a lubricating oil inlet 40 and a lubricating oil return port 41 formed therein. On the other hand, a cylindrical core 38a is inserted into the second case 38 on its axis. The core 38a is made of metal and made of a magnetic material.
A lubricating oil outlet 42 is formed at the lower end of the core 38a on the axis thereof. An oil passage 43 for connecting the lubricating oil inlet 40 and the lubricating oil return port 41 to a lubricating oil outlet 42 is provided.
The first case 37, the frame plate 39, the second case 3
8 and the core 38a are sequentially formed on each axis.

In the oil passage 43, the first case 37,
A valve body 45 is vertically movably fitted into a communicating portion 44 communicating the frame plate 39 and the second case 38. The communication portion 44 is circular in plan view. The valve body 45 includes a valve body 46 having a substantially square shape in a plan view, which is slidably fitted in the communication portion 44 in a vertical direction, and an elastic valve body 47 attached to the valve body 46. In the above case, an extremely narrow gap (air gap) is formed between the inner peripheral surface of the communicating portion 44 and the outer surface of each corner of the valve body 46. Positioned with high accuracy. And the above-mentioned communication part 4
4 formed between the inner peripheral surface of the lubricating oil 4 and the outer surface of each side of the valve body 46 are formed into four narrow passages 44a of the same shape and size.
0 and a passage for the lubricating oil 22 from the lubricating oil return port 41 to the lubricating oil outlet 42. The valve body 46 is made of a magnetic material made of metal, and the elastic valve body 47 is made of rubber. Also,
A spring 48 for urging the valve body 45 upward is provided.

Of the first and second cases 37 and 38,
The second case, which is at least one of the cases
38, the second case 38 and the core 38
A bobbin 51 made of resin, a solenoid 52 externally fitted to the bobbin 51, and a substantially U-shaped magnetic plate 53 having a bottom externally fitted to the lower portion of the core 38a are accommodated between the core a. . The magnetic plate 53 is made of metal,
At the same time, a magnetic circuit of the solenoid 52 is formed.

The core 38 in the second case 38
The accommodation of the a, the bobbin 51, the solenoid 52, and the magnetic plate 53 is performed by molding the resin as a raw material of the second case 38 by thermoplasticity.

In FIGS. 1, 5 and 6, the frame plate 39 has a recess 39 formed by a pair of through holes.
a, 39a are formed. On the other hand, each upper end of the magnetic plate 53 protrudes from the upper surface of the second case 38, and serves as projections 53a. The recesses 39a, 39a and the protrusions 53a, 53a are fitted to each other in a tightly-fitting manner so as to be freely detachable.

5 and 6, the first case 37
A pair of columnar locking projections 54 are integrally provided on the lower surface of the projection. On the other hand, a pair of circular locking holes 55 are formed in the frame plate 39. The locking projections 54, 54 and the locking holes 55, 55 are fitted to each other so as to be closely fitted to each other.

The first case 37, the second case 38, and the frame plate 39 are positioned with high precision by the above-described fittings. That is, in assembling or reassembling the first case 37, the second case 38, and the frame plate 39, the first solenoid valve 33 (the second solenoid valve 34) is accurately assembled by the fitting. ing. In the above case, the locking projection 5
4 and 54 and the locking holes 55 and 55 are respectively provided at unequal distances with respect to the axis of the first solenoid valve 33 (the second solenoid valve 34). It is designed to avoid errors in assembling. The mounting portions of the recess 39a and the projection 53a and the locking projection 54 and the locking hole 55 may be reversed.

1, 5 and 6, the solenoid 52 is de-energized and turned off (OF).
F), the valve body 45 moves upward by the bias of the spring 48. Then, as shown in FIGS. 1 and 5, the upper end surface of the elastic valve body 47 is pressed against the opening edge of the lubricating oil return port 41 on the lower surface of the first case 37. Thereby, the oil passage 43
, The lubricating oil inlet 40 communicates with the lubricating oil outlet 42, and at the same time, the lubricating oil return port 41 is shut off from the lubricating oil inlet 40 and the oil passage 43. That is, the first solenoid valve 33 (the second solenoid valve 34) opens.

On the other hand, when the solenoid 52 is energized and turned on (ON), the valve body 46 is pulled toward the solenoid 52 with the elastic valve body 47 against the spring 48 and moves downward. . Then, the lower end surface of the elastic valve body 47 is pressed against the opening edge of the oil passage 43 on the upper surface of the core 38a. As a result, the lubricating oil inlet 40 and the oil passage 43 are shut off, and at the same time, the lubricating oil inlet 40 and the lubricating oil return port 41
Communicates with That is, the first solenoid valve 33 (the second solenoid valve 34) is closed.

As described above, in the first solenoid valve 33 (second solenoid valve 34), since the first case 37, the second case 38, and the frame plate 39 are assembled with each other with high accuracy, the solenoid 52
Is formed with high accuracy for the valve element 45. Therefore, the extremely narrow gap between the inner peripheral surface of the frame plate 39 and the outer surface of each corner of the valve body 46 is determined by the opening and closing operations of the first solenoid valve 33 (second solenoid valve 34). Are kept substantially equal to each other. As a result, the valve body 45 smoothly moves up and down without hitting the inner peripheral surface of the communication portion 44, and operates quickly in response to the bias of the spring 48 and the energization of the solenoid 52. For this reason, high precision is ensured for supply and stop of the lubricating oil 22.

In the communication portion 44, the space between the inner surface of the communication portion 44 and the outer surface of the valve body 45 is reduced so as not to hinder the flow of the lubricating oil 22, so that the excess space is as small as possible. I have. Therefore, for example, the lubricating oil 22 in the surplus space is reduced in the engine 11 due to the negative pressure fluctuation in the pulsating intake pipes 16a and 17a in the low to medium opening range of the left and right carburetors 16 and 17. Is prevented from being supplied in vain in a large amount.

A check valve 56 as an open / close valve is provided at each lubricating oil outlet 42 of the first and second solenoid valves 33 and 34.
Each check valve 56 is directly and detachably screwed, and these check valves 56 are provided integrally with the first and second solenoid valves 33 and 34. That is, the check valve 56 has a valve main body 57 detachably screwed to the lubricating oil outlet 42, and an oil passage 58 connected to the lubricating oil outlet 42 is formed in the valve main body 57. The oil passage 58
Is provided, and the ball 59 is urged by a spring 60 in a direction to close the oil passage 58. When the oil pressure of the lubricating oil 22 on the lubricating oil outlet 42 side becomes a predetermined value or more, the lubricating oil 22 pushes the ball 59 against the spring 60 to open the oil passage 58.

In FIGS. 1, 4 and 5, an upstream pipe 30a (upstream pipe 31a) of the first oil pipe 30 (second oil pipe 31) is connected to the lubricating oil inlet 40, and the lubricating oil outlet is provided. Reference numeral 42 denotes a downstream pipe 30b (downstream pipe 3) of the first oil pipe 30 (second oil pipe 31) via the above-described check valve 56.
1b) are connected.

An oil return passage 61 extending from the lubricating oil return ports 41, 41 of the first solenoid valve 33 and the second solenoid valve 34 toward the suction side of the oil pump 25.
Is provided. The oil return passage 61 has a first return pipe 62 and a second return pipe 63 extending from the lubricating oil return ports 41, 41.
They are joined at 5. Also, this T-shaped joint 6
A joining return pipe 66 extends from 5, and a return port 66a as an extension end thereof is connected to an upper portion of the oil tank 26.

In the above case, a Y-shaped joint may be used instead of the T-shaped joint 65. In this case, the Y-shaped joint is inverted, the extended ends of the return pipes 62 and 63 are connected to the lower ends on the left and right sides, and the merging return pipe 66 is connected to the upper end of the Y-shaped joint. By doing so, the lubricating oil 22 flowing through the return pipes 62 and 63 can be used.
Are substantially the same as each other, and they smoothly merge at the Y-shaped joint, so that the pressure loss of the lubricating oil 22 can be small.

In FIGS. 1, 4 and 5, when the respective solenoids 52 of the first solenoid valve 33 and the second solenoid valve 34 are turned off in the operating state of the engine 11, based on FIGS. As described above, each lubricating oil inlet 40 of the first solenoid valve 33 and the second solenoid valve 34 is opened toward the lubricating oil outlet 42, while each lubricating oil return port 41 is closed. Then, the lubricating oil 22 discharged from the oil pump 25 interlocked with the engine 11 is supplied to the upstream pipes 30 of the first oil pipe 30 and the second oil pipe 31.
After being supplied to the lubricating oil inlet 40 through the lubricating oil inlets 40a and 31a, it flows to the lubricating oil outlet 42 side as shown by an arrow A in FIGS. Then, the lubricating oil 22 causes the ball 59
To open the oil passage 58, and the first oil pipe 30 and the second oil pipe 31
The lubricating oil 22 flows into the engine 11 together with the air-fuel mixture and is supplied to the engine 11 through the respective downstream pipes 30b and 31b.

On the other hand, when the above-mentioned solenoids 52 are turned on, the connection between the lubricating oil inlet 40 and the lubricating oil outlet 42 is shut off as described above, while the lubricating oil inlet 40 opens toward the lubricating oil return port 41. It is. Then, the oil pump 25
The lubricating oil 22 supplied to the lubricating oil inlet 40 flows through the lubricating oil return port 41 as shown by an arrow B in FIGS. 1 and 5.
The lubricating oil 22 passes through the first return pipe 62, the second return pipe 63, and the merge return pipe 66, and the oil tank 26
Is returned to.

Electronic control means for controlling the opening and closing operations of the first solenoid valve 33 and the second solenoid valve 34 are provided. That is, the solenoids 5 of the first solenoid valve 33 and the second solenoid valve 34 are controlled by this control means.
2 are automatically turned off and on automatically in synchronization with each other, and the first solenoid valve 33 and the second solenoid valve 3
4 opens and closes as described above, whereby the lubricating oil 22 discharged from the oil pump 25
1 and the inside of the oil tank 26 are alternately guided. At this time, the first solenoid valve 33 and the second
Each OFF period of the solenoid 52 of the solenoid valve 34 is fixed. On the other hand, the on-period of each of the solenoids 52 is adjusted to be longer or shorter based on the rotation speed of the engine 11, the respective throttle openings of the left carburetor 16 and the right carburetor 17, the temperature of the lubricating oil 22, and the like. Thereby, the amount of the lubricating oil 22 corresponding to each operation state of the engine 11 is
Are supplied with high accuracy.

When the engine 11 is stopped, the oil pump 25 is also stopped. At this time, since the pressure of the lubricating oil 22 in the lubricating oil outlet 42 decreases, the ball 59 of the check valve 56 is urged by the spring 60 to close the oil passage 58, that is, the first oil pipe 30 and the second oil pipe Close 31. For this reason, when the motorcycle 1 is left for a long time with the engine 11 stopped, if the lubricant oil 22 in the oil tank 26 is temporarily
Even if the lubricating oil 22 leaks to the downstream side, the check valve 56 prevents the lubricating oil 22 from entering the engine 11 through the first and second oil pipes 30 and 31. Therefore, the ignition plug 18 is prevented from being wet with the lubricating oil 22, so that the consumption of the lubricating oil 22 is prevented from becoming excessive, and the startability of the engine 11 is kept good.

In FIG. 1, an air vent hole 68 for opening the upper end of the oil passage 43 above the first case 37 is formed in the upper part of each first case 37 of the first solenoid valve 33 and the second solenoid valve 34. Have been. Further, a bolt-like plug 69 that closes the air vent hole 68 so that it can be opened and closed is screwed to the air vent hole 68. And the first
The solenoid valve 33 and the second solenoid valve 34 are connected to the engine 1
1 or during repair or the like.
To release the air vent hole 68, the valve case 3
The air in 6 can be easily removed. Note that the air vent hole 68 and the plug 69 may not be provided.

1, 2 and 4, as described above, the oil pump 25, the first solenoid valve 33, and the second solenoid valve 34 are all provided on the right side, which is one of the right and left sides of the engine 11. , Are brought closer together. Therefore, since the first and second oil pipes 30, 31 from the oil pump 25 to the solenoid valves 33, 34 need only be short, bubbles are formed in the lubricating oil 22 of the first and second oil pipes 30, 31. Even if it is present, this amount is suppressed to a small amount, and the volume fluctuation accompanying the fluctuation of the oil pressure in the first and second oil pipes 30 and 31 is suppressed to a small value.

Further, since the volumes of the first and second oil pipes 30 and 31 are small, when the first and second oil pipes 30 and 31 are deformed and change in volume due to pressure fluctuation in this portion,
This change in volume can be kept small. In this way, the opening and closing operations of the solenoid valves 33 and 34 can be made to correspond to the discharge of the lubricating oil 22 from the oil pump 25 with good timing, and the accuracy of the supply amount of the lubricating oil 22 to the engine 11 is improved. Improvements are being made.

In the above case, the solenoid valves 33,
34, the lubricating oil supply ports 30 of the first oil pipe 30 and the second oil pipe 31 for the engine 11
c and 31c are provided at a higher position. For this reason, when the motorcycle 1 is left for a long time with the engine 11 stopped, even if the lubricating oil 22 leaks from each of the solenoid valves 33 and 34, the lubricating oil 22 is discharged by the first oil pipe 30 or the second oil pipe 30. The oil pipe 31 is prevented from entering the engine 11 through the lubricating oil supply ports 30c, 31c. In this way, excessive consumption of the lubricating oil 22 is prevented. Also, the ignition plug 18 is prevented from being wetted by the lubricating oil 22, and the startability of the engine 11 is kept good.

Also, as described above, each solenoid valve 3
3 and 34, when the first and second oil pipes 30 and 31 are closed,
The lubricating oil 22 supplied to the lubricating oil inlets 37 and 34 is returned to the oil tank 26 through the lubricating oil return port 41, and the lubricating oil return port 41 is connected to each of the solenoid valves 33 and 34. It is arranged at the upper end.

For this reason, even if air enters the lubricating oil 22 before it is supplied to the engine 11, the air in the lubricating oil 22 rises by its buoyancy at each of the solenoid valves 33 and 34, and these solenoids The lubricant reaches the lubricating oil return port 41 at the upper end of the valves 33 and 34. Therefore, when the lubricating oil 22 is returned to the oil tank 26, the lubricating oil 22 returns to the oil tank 26 with the air reaching the lubricating oil return port 41, where the air is Separated. That is, even if air enters the lubricating oil 22 as described above, the air is separated when it is returned to the oil tank 26, so that the lubricating oil 22 supplied to the engine 11 through the respective solenoid valves 33 and 34. The accuracy of the supply amount of satisfactorily is maintained.

As described above, both the oil pump 25 and the solenoid valves 33 and 34 are mounted on the engine 11 side. In this case, since the engine 11 has a high rigidity, the oil pump 25, the solenoid valves 33 and 34, and the first and second connecting parts thereof are connected.
The accuracy of assembling the oil pipes 30 and 31 with each other is improved. In addition, since the oil pump 25 and the solenoid valves 33 and 34 can be integrally mounted on the body frame 2 of the motorcycle 1 in a state where the oil pump 25 and the solenoid valves 33 and 34 are assembled to the engine 11, the lubricating oil supply device 23 is assembled. Workability is also improved.

In FIG. 4, the return port 66a of the merging return pipe 66 opened to the oil tank 26 is connected to the oil tank 2
6 is disposed above. That is, the return port 66a
Is located above the level of the lubricating oil 22 in the oil tank 26. Therefore, when the oil pump 25 stops with the stop of the engine 11, the lubricating oil 22 in the oil tank 26 flows backward through the merging return pipe 66 toward the first solenoid valve 33 and the second solenoid valve 34. An attempt is made to prevent the engine 11 from getting into the engine 11.

The oil pump 25, the first solenoid valve 33, and the second solenoid valve 34
1 may be provided on the left side. Also, the return port 66a of the merge return pipe 66 may be connected to the bottom of the oil tank 26,
In FIG. 4, as indicated by reference numeral 56a ', the oil filter 2
8 may be connected to the middle part of FIG.
As shown by "a", the lubricating oil 22 returned from each of the solenoid valves 33 and 34 may be filtered by the oil filter 28 in any case. After the oil pump 2
5 is sent. Further, the open / close valve exemplified as the check valve 56 may be driven to open / close by an actuator such as a solenoid.

(Embodiment 2) FIG. 7 shows Embodiment 2. According to this, the check valve 56 is not provided at each lubricating oil outlet 42 of the first solenoid valve 33 and the second solenoid valve 34. On the other hand, at the upstream end of each of the upstream pipes 30a and 31a of the first oil pipe 30 and the second oil pipe 31, a check valve 56 'having the same configuration as the check valve 56 of the embodiment is provided.

Further, another check valve 56 'for opening and closing the oil return passage 61 is provided. When the engine 11 is in operation, the check valves 56 'and 56' open the first and second oil pipes 30 and 31 and the oil return passage 61, and when the engine 11 is stopped. The first and second oil pipes 30 and 31 and the oil return passage 61 are closed.

Therefore, when the engine 11 is stopped,
When the pressure of the lubricating oil 22 in the oil tank 26 is increased between the first and second
The solenoid valve 3 passes through the oil pipes 30, 31 and the oil return passage 61.
Check valve 5
Blocked by 6 '. Therefore, the leakage of the solenoid valves 33 and 34 is not promoted by the pressure of the lubricating oil 22, and even in this case, the oil tank 2
The lubricating oil 22 in the inside 6 and the oil return passage 61 is prevented from entering the engine 11. Other configurations and operations are the same as those of the first embodiment. For this reason, the same reference numerals are given to the drawings, and description thereof will be omitted.

Third Embodiment FIG. 8 shows a third embodiment. According to this, the first and second solenoid valves 33, 34
Check valves 56 'and 56' are provided between the first and second return pipes 62 and 63, respectively. Incidentally, in FIG. 7, the respective solenoids 52 of the first solenoid valve 33 and the second solenoid valve 34 are turned on, and the lubricating oil 22 discharged from the oil pump 25 is supplied to the first return pipe 62 and the second return pipe 63. When the oil is returned to the oil tank 26 through the oil return passage 61, a pressure difference is usually generated between the lubricating oil 22 in the first return pipe 62 and the second return pipe 63. In this case, pressure is transmitted from one side of the first and second solenoid valves 33 and 34 to the other side through the first and second return pipes 62 and 63, and the flow rate accuracy of each of the solenoid valves 33 and 34 decreases. May occur.

Therefore, as described above, check valves 56 'and 56' are provided between the first and second solenoid valves 33 and 34 and the first and second return pipes 62 and 63, respectively. Therefore, the first and second solenoid valves 33, 34
The transmission of pressure from one side to the other side is suppressed by the check valves 56 ′ and 56 ′, and the first and second solenoid valves have a predetermined flow rate accuracy.

Each of the check valves 56 and 56 'is
The first and second solenoid valves 33 and 34 are provided immediately downstream of the lubricating oil return port 41. That is,
In FIG. 7, each check valve 56 ', 56' is provided in the same manner as the check valve 56 is provided integrally with the first and second solenoid valves 33, 34. Therefore, the first and second solenoid valves 33 and 34 are connected to each check valve 5.
6 ', 56', first and second resin tube
Since the return pipes 62 and 63 do not exist, a predetermined flow rate accuracy is secured without being affected by the hose expansion due to the pressure of the lubricating oil 22.

On the other hand, other oil filters 71, 71 are provided in the middle of the upstream pipes 30a, 31a of the first and second oil pipes 30, 31, respectively. These other oil filters 71, 71 prevent foreign substances, such as dust, from flowing into the first and second solenoid valves 33, 34, so that the first and second solenoid valves 33, 34 operate accurately. Secured.

The mesh of the elements of each of the other oil filters 71 is coarser than that of the oil filter 28. By the way, the oil filter 28 can be provided in a wide space in relation to other vehicle components, so that the filtration area of the oil filter 28 can be made sufficiently large.

On the other hand, the oil pump 25 and the first and second
The solenoid valves 33 and 34 are close to each other because each device must be compactly arranged. For this reason, each upstream pipe 3 of the first and second oil pipes 30 and 31 for connecting these
The lengths of 0a and 31a cannot be taken sufficiently. Therefore, the filtration area of each of the other oil filters 71 interposed between the upstream pipes 30a and 31a cannot be made sufficiently large, so that the size is small.

As a result, when each element of the oil filter 28 and the other oil filter 71 is formed into a mesh having substantially the same size, each element is clogged with the other oil filter while the element is clogged. 71 is shorter. Therefore, as described above, the mesh of the elements of each of the other oil filters 71 is coarsened so that clogging is difficult to occur, so that the period until clogging is almost the same as that of the oil filter 28. .

Other structures and operations are the same as those of the second embodiment. For this reason, the same reference numerals are given to the drawings, and the description thereof will be omitted. The provision of the other oil filter 71 and the relationship between the element and the oil filter 28 may be applied to the first or second embodiment.

[0057]

According to the present invention, the valve case is connected to the valve case.
A first case made of resin constituting a part of the outer shell of the case
And a resin-made second casing constituting another portion of the outer shell portion.
And a metal member interposed between the first and second cases.
Frame plate, and the first and second cases and the frame plate
And a fastener for removably fastening the first and second cases, and at least one of the first and second cases.
In a solenoid valve in which a solenoid and a magnetic plate that forms a magnetic circuit of the solenoid are housed inside one case , a protrusion is formed on one of the frame plate and the magnetic plate, and the other plate is formed on the other plate. A concave portion is formed so as to be removably fitted to the protrusion. For this reason, when disassembling and reassembling the solenoid valve for maintenance and inspection of the solenoid valve, the first and second cases and the frame plate are fitted while the concave portion and the projection are fitted to each other. It may be Kumitatere bets, in this manner, first, of the second case
The positioning of the case accommodating the magnetic plate and the frame plate is automatically performed, and the original accuracy is reproduced.

Therefore, in the reassembly of the solenoid valve, the operation of reproducing the original accuracy can be performed by a simple operation of assembling the first and second cases and the frame plate while fitting the recesses and the projections to each other. Becomes Further, in the reassembly, the concave portion and the projection that enable the positioning of the frame plate of the first and second cases accommodating the magnetic plate and the frame plate are provided by using the components of the solenoid valve. Therefore, when the above-mentioned positioning is enabled, the number of parts is prevented from increasing, so that the above-mentioned solenoid valve can have a simple configuration. In addition, since the recesses and projections that are fitted to each other are formed on the metal frame plate and the magnetic plate, even if the fitting and disengagement of the two are repeated, wear can be reduced. Therefore, even if the solenoid valve is disassembled and reassembled repeatedly, there is an advantage that a desired accuracy is ensured each time.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a solenoid according to a first embodiment.

FIG. 2 is an overall side view of the motorcycle according to the first embodiment.

FIG. 3 is a front view of the motorcycle in the first embodiment.

FIG. 4 is a partially enlarged view of FIG. 2 in the first embodiment.

FIG. 5 is a longitudinal sectional view at a position displaced by 90 ° in plan view in Example 1;

FIG. 6 is a sectional view taken along line 6-6 of FIG. 1 in the first embodiment.

FIG. 7 is a diagram corresponding to FIG. 4 in the second embodiment.

FIG. 8 is a diagram corresponding to FIG. 4 in the third embodiment.

[Explanation of symbols]

33 the first solenoid valve (solenoid valve) 34 the second solenoid valve (solenoid valve) 35a bolts (fasteners) 36 valve case 37 first case 38 second cases 39 frame plate 39a recess 52 solenoid 53 magnetic plate 53a projecting

──────────────────────────────────────────────────続 き Continued from the front page (56) References JP-A-63-285379 (JP, A) JP-A 4-68268 (JP, U) JP-A 61-30772 (JP, U) JP-A 57- 205463 (JP, U) JP-A-59-40671 (JP, U) JP-A-1-83980 (JP, U) JP 1-50793 (JP, B2) JP 3-51945 (JP, B2) (58) Field surveyed (Int.Cl. ⁷ , DB name) F16K 31/06-31/11

Claims (1)

(57) [Claims] 1. A valve case, comprising: an outer shell portion of the valve case;
The first case made of resin and the other parts of the outer shell
And a second case made of resin,
A metal frame plate which is interposed between the second case, these first, constituted by a second case and the frame plate and each other fastener to removably fastened, the first, second Ke
A solenoid valve in which a solenoid and a magnetic plate for forming a magnetic circuit of the solenoid are accommodated in at least one of the cases, wherein a protrusion is provided on one of the frame plate and the magnetic plate. And a recess formed in the other plate so as to be removably fitted to the projection.