JPH07208138A - Oil tank for vehicle - Google Patents

Abstract

PURPOSE:To prevent the removal of a cap at an oil filler hole even though a car body is swayed severely, to make difficult to give a tamper, and to simplify the form of a tank main body, so as to realize a low cost. CONSTITUTION:At the press-in margine 34 of a filler pipe 31 and a cap 32, a pipe member 35 is inserted allowable to insert and remove in the direction orthogonal to its axial direction C, and the inner passage 36 of the pipe member 35 is allowed to communicate with the inner space of a tank main body 23, while one end of the pipe member 35 is projected from the press-in margine 34, and a reservior hose 33 to make the inner pressure of the tank main body 23 and the atmospheric pressure coincide is connected to this position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle oil tank in which a cap for closing an oil inlet is prevented from coming off during traveling.

[0002]

2. Description of the Related Art FIG. 4 is a left side view showing an example of an oil tank mounted on a motorcycle or the like. The oil tank 100 is formed by plastic blow molding or the like, and an oil inlet 102 for injecting oil and a breather union 103 are provided on an upper portion of a tank body 101 in which oil is stored. Furthermore, the tank body 10
A discharge union 104 is provided below the unit 1.

The oil inlet 102 is a rubber cap.
It is sealed by 105, and the breather hose 106 is connected to the breather union 103. This Breather Horse
The other end of 106 is open to the atmosphere. An oil hose 107 is connected to the discharge union 104, and the other end is connected to an oil pump of an engine (not shown).

When the engine of the motorcycle is started and the oil pump is activated, the oil injected into the tank body 101 is discharged from the discharge union 104, and the oil hose is discharged.
It is sucked into the oil pump through 107. With this,
Although the oil level in the tank body 101 gradually drops, the outside air is introduced into the tank body 101 from the breather hose 106 accordingly, so that the inside of the tank body 101 is prevented from becoming a negative pressure.

[0005]

However, when such an oil tank 100 is mounted on a motorcycle for riding on rough terrain (such as a motocrosser), the tank body 101 inside the tank body 101 is violently shaken during rough terrain traveling. Since the oil level fluctuates greatly, the oil may violently collide with the inside of the cap 105 that is press-fitted into the oil inlet 102 and the cap 105 may loosen, and in the worst case, the cap 105 will come off. I was afraid.

Further, since the cap 105 can be easily pulled out from the tank body 101, there is a concern that it may be misled by another person.

Further, since the breather union 103 and the discharge union 104 must be provided side by side with the tank main body 101, the shape of the tank main body 101 becomes complicated, and the moldability is poor and the cost is increased.

The present invention has been made in order to solve the above-mentioned problems. Even if the vehicle body shakes violently, the cap of the oil injection port does not come off, it is less susceptible to mischief, and the shape of the tank body is simplified. It is an object of the present invention to provide an oil tank for a vehicle that can be reduced in cost to reduce costs.

Another object of the present invention is to allow a breather hose for adjusting the pressure inside the tank body to the atmospheric pressure to be easily attached to and detached from the oil tank, and to securely connect the breather hose without fear of disconnection. To be able to do it.

[0010]

In order to achieve the above object, an oil tank for a vehicle according to the present invention has, as described in claim 1, an oil inlet for injecting oil into a tank main body for storing oil. In an oil tank for a vehicle, which is provided with an oil injection port extending from the tank body and a cap that is press-fitted into the injection pipe to seal the injection pipe, the injection pipe and the cap are press-fitted. The pipe member is inserted into the margin portion in a direction orthogonal to the axis of the pipe member so that the pipe member can be inserted and removed, the internal passage of the pipe member is communicated with the internal space of the tank body, and one end of the pipe member is protruded from the press fitting margin. A breather hose for adjusting the internal pressure of the tank body to the atmospheric pressure was connected here.

Preferably, as described in claim 2,
Forming a recess in the cap that communicates with the internal space of the tank body, and for the press-fitting margin of the injection pipe and the cap,
An insertion hole that penetrates from the outside in a direction orthogonal to the axis of the press-fitting margin and communicates with the recess is provided at one location on the circumference, and the tip end of the pipe member is cut diagonally to allow insertion and removal in the insertion hole. Then, the breather hose is connected to the rear end portion of the pipe member such that the rear end portion of the pipe member projects from the injection pipe.

Alternatively, as described in claim 3, a recess is formed in the cap so as to communicate with the internal space of the tank body, and the press-fitting margin of the injection pipe and the cap and the recess are penetrated orthogonally to the axis. An insertion hole is provided, the pipe member is removably inserted into the insertion hole, both ends of the pipe member are projected from the peripheral surface of the injection pipe, and one end of the pipe member is closed to insert the insertion hole at the end. An engaging portion having a diameter larger than the inner diameter of is provided, and the breather hose is connected to the other end of the pipe member.

[0013]

According to the present invention, when the vehicle oil tank is constructed, the pipe member is inserted into the injection pipe forming the oil injection port and the press-fitting margin portion of the cap. It is impossible to remove the cap unless the pipe member is pulled out to prevent the pipe from being pulled out. Therefore, even if the oil violently hits the inside of the cap due to the shake of the vehicle body, there is no fear that the cap will loosely fit or the cap will come off.

Further, since the cap cannot be easily pulled out from the tank main body, there is less fear of being mischievous by another person.

Further, since the breather hose is connected to the oil inlet, it is not necessary to provide a union or the like for connecting the breather hose to the tank body, the shape of the tank body is simplified and the moldability is improved, and the oil tank The manufacturing cost can be reduced.

According to the second aspect of the present invention, if the pipe member is inserted into the insertion hole provided in the press-fitting margin of the injection pipe and the cap, the cap is fixed and the breather hose is connected at the same time. Since the breather hose can be pulled out by pulling out the member, the detachability of the breather hose becomes very good.

Moreover, when the pipe member is inserted into the insertion hole, the tip end portion of the pipe member abuts on the peripheral wall of the recessed portion provided in the cap, so that the pipe member cannot be inserted any more and the pipe member is reliably positioned. Done. Here, since the tip of the pipe member is cut obliquely, even if the tip of the pipe member comes into contact with the peripheral wall of the recess provided in the cap, the communication state between the pipe member and the tank body is maintained, The breather hose can function reliably.

Further, when the vehicle oil tank is constructed as described in claim 3, the pipe member inserted into the insertion hole and the withdrawal direction of the breather hose connected to the end portion of the pipe member are removed. Since the directions are opposite to each other, the pipe member and the breather hose can be more reliably prevented from being pulled out.

In this case, the pipe member cannot be pulled out unless the breather hose is pulled out, and therefore the cap cannot be removed, so that it is impossible for another person to remove the cap with one touch, and mischief can be prevented more effectively.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a left side view of a motorcycle to which the present invention is applied. The motorcycle 1 is of a motocrosser type capable of traveling on rough terrain, and has a large suspension stroke of front wheels 2 and rear wheels 3.

A front fork 5 supporting the front wheels 2 is pivotally mounted on a front head of the vehicle body frame 4 together with a handlebar 6, a front fender 7 and the like so as to be rotatable left and right, and is installed at a lower center portion of the vehicle body frame 4. A swing arm 9 supporting the rear wheel 3 is connected to the pivot shaft 8 so as to be vertically rotatable.

In the lower front portion of the body frame 4, for example, 2
A cycle engine 11 is mounted, and a carburetor 12 and an air cleaner 13 are connected to a rear portion of the engine 11. An exhaust muffler 14 extends from the engine 11, and the exhaust muffler 14 is guided rearward through the right side surface of the vehicle body. The power of the engine 11 is transmitted to the rear wheels 3 by the chain 15.

A fuel tank 16 is installed above the engine 11 and a seat 17 is placed behind it. Side covers 18 are attached to both sides of the seat 17, and a rear fender 19 for covering the rear wheel 3 is provided below the seat 17 and extends rearward.

An oil tank 21 according to the present invention is installed below the seat 17. The oil injected into the oil tank 21 is supplied to the oil pump (not shown) of the engine 11 through the oil hose 22.
It is mixed with fuel and fed to the engine 11.

FIG. 2 is an enlarged view of the oil tank 21. The oil tank 21 is formed, for example, by blow molding of plastic, and brackets 24, 25, 2 are provided around a tank main body 23 in which oil is stored.
6 are provided and these brackets are bolted to the body frame 4.

An oil inlet 27 for injecting oil is provided in the upper portion of the tank body 23, and a discharge union 28 for discharging oil is provided in the lower portion of the tank body 23. The oil hose 22 is attached to the discharge union 28.
Are connected.

The oil inlet 27 is provided in the tank body 23.
The pipe-shaped injection pipe 31 extends upward from the above, and a cap 32 that liquid-tightly closes the injection pipe 31. The cap 32 is made of an elastic material such as oil resistant rubber and is press-fitted into the injection pipe 31 from above to close the injection pipe 31. A breather hose 33 for adjusting the internal pressure of the tank body 23 to the atmospheric pressure is connected to the oil inlet 27.

FIG. 3A is a vertical sectional view of the oil inlet 27 showing the first embodiment of the present invention. A pipe member 35 is removably inserted into a portion of the press-fitting margin 34 where the injection pipe 31 and the cap 32 are fitted to each other in a direction orthogonal to the axis C thereof. The internal passage 36 of the pipe member 35 communicates with the internal space of the tank body 23, and the breather hose 33 is connected to the end of the pipe member 35.

That is, the bottom of the cap 32 is provided with a bowl-shaped recess 37 communicating with the internal space of the tank body 23, while the press-fitting margin 34 is penetrated from the outside in the direction perpendicular to the axis C and the recess is formed. Insertion holes 38, 39 communicating with 37
, Respectively, are provided on the circumferences of the injection pipe 31 and the cap 32, respectively.

The tip portion 35a of the pipe member 35 is obliquely cut, and the pipe member 35 is inserted into the insertion holes 38 and 39 from the tip portion 35a side. Therefore, the internal passage 36 of the pipe member 35 communicates with the internal space of the tank body 23.

On the other hand, the rear end portion of the pipe member 35 is the injection pipe 3
The breather hose 33 is connected to the breather hose 33.

An insertion hole 38 formed in the injection pipe 31
The inner diameter of is slightly larger than the outer diameter of the pipe member 35 so that the pipe member 35 can be smoothly inserted. On the other hand, the insertion hole 3 formed on the side of the cap 32
The inner diameter of 9 is made slightly smaller than the outer diameter of the pipe member 35, and the pipe member 35 is press-fitted into the insertion hole 39 and held by the elasticity of the cap 32. Therefore, the oil inside the tank body 23 does not leak from between the insertion hole 39 and the pipe member 35.

When closing the oil inlet 27 of the oil tank 21, first, the cap 32 is press-fitted into the inlet pipe 31,
Next, the cap 32 is twisted to align the positions of the insertion hole 38 and the insertion hole 39. At that time, the cap 32 and the tank body 23
It is advisable to provide an alignment mark or the like between and so that the alignment position of the insertion holes 38 and 39 can be seen.

A breather hose 33 is connected to the rear end of the pipe member 35, and the pipe member 35 is connected to the front end portion 3.
Insert from the 5a side into the insertion holes 38, 39. The other end of the breather hose 33 is open to the atmosphere.

When the oil pump is actuated when the engine 11 is started, the oil injected into the tank body 23 is discharged from the discharge union 28 and is sucked into the oil pump through the oil hose 22. Along with this, the oil level in the tank main body 23 is gradually lowered, and the outside air is introduced into the tank main body 23 from the breather hose 33, and the oil is smoothly discharged.

When the oil tank 21 is constructed as described above, since the pipe member 35 is inserted into the press-fitting margin 34 of the injection pipe 31 and the cap 32, this pipe member 35 is inserted.
Prevents the cap 32 from being pulled out, and the cap 32 cannot be removed unless the pipe member 35 is pulled out. Therefore, even if the oil violently hits the inside of the cap 32 due to the shaking of the vehicle body, there is no fear that the fitting of the cap 32 will be loose or the cap 32 will come off.

Further, since the cap 32 cannot be easily pulled out from the tank body 23, the motorcycle 1
There is less concern that the cap 32 will be mischievous by another person when the vehicle is parked.

Furthermore, since the breather hose 33 is connected to the oil injection port 27, it is not necessary to provide a union or the like for connecting the breather hose 33 to the tank body 23 side, and the shape of the tank body 23 is simplified and moldability is improved. And the manufacturing cost of the oil tank 21 can be reduced.

If the pipe member 35 is inserted into the insertion holes 38 and 39 provided in the press-fitting margin 34 of the injection pipe 31 and the cap 32, the breather hose 3 is fixed at the same time when the cap 32 is fixed.
When the connection of 3 is completed and the pipe member 35 is pulled out, the breather hose 33 is also pulled out, so that the detachability of the breather hose 33 becomes very good.

Moreover, the pipe member 35 is inserted into the insertion holes 38, 3
9, the tip of the pipe member 35 is cap 3
Since it abuts on the peripheral wall of the concave portion 37 provided on the second pipe 2, the pipe member 35 cannot be inserted any further, and the pipe member 35
Is reliably positioned. At that time, the pipe member 35
Since the tip of the pipe is cut diagonally, the pipe member 35
Even if the tip of the pipe member comes into contact with the peripheral wall of the recess 37, the pipe member 3
The communication state between the tank 5 and the tank body 23 is maintained, and the breather hose 33 can function reliably.

FIG. 3B is a vertical sectional view of the oil inlet 27 showing the second embodiment of the present invention. Also in the case of this embodiment, a bowl-shaped recess 37 is provided at the bottom of the cap 32. Then, the press-fitting margin 34 of the injection pipe 31 and the cap 32
And insertion holes 38 and 39 penetrating the concave portion 37 at right angles to the axis C of the press-fitting margin 34.
The pipe member 35 is removably inserted into the parts 8 and 39.

The insertion hole 3 provided on the injection pipe 31 side
The inner diameter of 8 is slightly larger than the outer diameter of the pipe member 35, and the inner diameter of the insertion hole 39 provided on the cap 32 side is slightly smaller than the outer diameter of the pipe member 35. As a result, the pipe member 35 is press-fitted and held in the insertion hole 39, and oil leakage is prevented by the sealing effect due to the elasticity of the cap 32.

The length of the pipe member 35 is made larger than the outer diameter of the injection pipe 31, and both ends of the pipe member 35 inserted into the insertion holes 38 and 39 are projected from the peripheral surface of the injection pipe 31. There is. The insertion hole 3 is provided at one end of the pipe member 35.
A locking portion 41 having an outer diameter larger than the inner diameter of 8 is formed, and the end portion on this side is closed. That is, the internal passage 36 of the pipe member 35 is formed in the recess 3 provided in the cap 32.
It splits into two at the position of 7, and opens in the recess 37 to communicate with the internal space of the tank body 23. On the other hand, the breather hose 33 is connected to the other end of the pipe member 35.

The pipe member 35 is inserted into the insertion holes 38 and 39 from the end portion on the opposite side of the locking portion 41. Then, when the pipe member 35 is pushed until the locking portion 41 comes into contact with the peripheral surface of the injection pipe 31, the other end of the pipe member 35 is inserted into the injection pipe 31.
The breather hose 33 can be connected to this projecting portion because it projects from the peripheral surface of the.

With this structure, the insertion holes 38, 3
Since the withdrawal directions of the pipe member 35 to be inserted into the pipe member 9 and the breather hose 33 connected to the pipe member 35 are opposite to each other, the pipe member 35 and the breather hose 33
It is possible to more reliably prevent the removal of the.

Also, the pipe member 35 cannot be pulled out unless the breather hose 33 is pulled out, and therefore the cap 32 cannot be removed either.
2 can not be removed, and it is possible to prevent mischief more effectively.

The vehicle oil tank according to the present invention can be used not only for motorcycles but also for other vehicles such as automobiles.

[0048]

As described above, in the vehicle oil tank according to the present invention, the pipe member is inserted into and removed from the injection pipe forming the oil injection port and the press-fitting margin portion of the cap in the direction orthogonal to the axis thereof. It is inserted as much as possible, and the internal passage of this pipe member is communicated with the internal space of the tank main body, and one end of the pipe member is projected from the press-fitting margin to connect a breather hose that adjusts the internal pressure of the tank main body to atmospheric pressure. It is a thing.

By doing so, the pipe member is inserted into the press-fitting margin of the injection pipe and the cap, so that this pipe member prevents the cap from being pulled out, and the cap is removed unless the pipe member is pulled out. Becomes impossible. Therefore, even if the oil level violently hits the inside of the cap due to the shake of the vehicle body, the fitting of the cap may loosen,
There is no fear that the cap will come off.

Further, since the cap cannot be easily pulled out from the tank main body, there is less fear of being mischievous by another person.

Furthermore, since the breather hose is connected to the oil inlet, it is not necessary to provide a union or the like for connecting the breather hose to the tank body, the shape of the tank body is simplified and the moldability is improved, and the oil tank The manufacturing cost can be reduced.

In the vehicle oil tank according to the present invention, the cap is formed with a recess communicating with the inner space of the tank body, and the injection pipe and the cap are press-fitted at right angles to each other from the axis of the press-fitted margin from the outside. An insertion hole penetrating in the direction to communicate with the recess is provided at one location on the circumference, the tip end of the pipe member is cut diagonally and inserted into the insertion hole so that it can be inserted and removed, and the other end of the pipe member is inserted. Since the breather hose was connected here so that the side protrudes from the injection pipe, if the pipe member is inserted into the insertion hole provided for the press-fitting margin of the injection pipe and the cap, the connection of the breather hose is completed at the same time as fixing the cap. Since the breather hose can be pulled out by pulling out the pipe member, the breather hose can be attached and removed very easily.

Moreover, when the pipe member is inserted into the insertion hole, the tip end portion of the pipe member comes into contact with the peripheral wall of the recessed portion provided in the cap, so that the pipe member cannot be inserted any more, and the pipe member is reliably positioned. Done. Here, since the tip of the pipe member is cut obliquely, even if the tip of the pipe member comes into contact with the peripheral wall of the recess provided in the cap, the communication state between the pipe member and the tank body is maintained, The breather hose can function reliably.

Further, in the vehicle oil tank according to the present invention, the cap is formed with a recess communicating with the inner space of the tank body, and the press-fitting margin of the injection pipe and the cap and the recess are penetrated at right angles to the axis. An insertion hole is provided for inserting the pipe member into the insertion hole so that the pipe member can be removed and inserted, and both ends of the pipe member are projected from the peripheral surface of the injection pipe, and one end of the pipe member is closed to insert the insertion member into the end portion. Since the locking portion having a diameter larger than the inner diameter of the hole is provided and the breather hose is connected to the other end of the pipe member, the pipe member inserted into the insertion hole and the breather hose connected to the end portion of the pipe member. The pulling-out directions of the pipes are opposite to each other, so that the pipe member and the breather hose can be more reliably prevented from being pulled out.

In this case, the pipe member cannot be pulled out unless the breather hose is pulled out, and therefore the cap cannot be removed, so that it is impossible for another person to remove the cap with one touch, and mischief can be prevented more effectively.

[Brief description of drawings]

FIG. 1 is a left side view of a motorcycle to which the present invention has been applied.

FIG. 2 is an enlarged view of an oil tank according to the present invention.

FIG. 3A is a vertical sectional view of an oil inlet showing a first embodiment of the present invention, and FIG. 3B is a vertical sectional view of an oil inlet showing a second embodiment of the present invention.

FIG. 4 is a left side view of an oil tank showing a conventional technique.

[Explanation of symbols]

 1 Motorcycle 21 Oil Tank 22 Oil Hose 23 Tank Main Body 27 Oil Filling Port 31 Filling Pipe 32 Cap 33 Breather Hose 34 Press Fitting 35 Pipe Member 35a Pipe Member Tip 36 Pipe Member Internal Passage 37 Recesses 38, 39 Insertion Hole 41 Locking part C Press fit axis

Claims (3)

[Claims] 1. A tank main body for storing oil is provided with an oil injection port for injecting oil, and the oil injection port extends from the tank main body and a cap press-fitted into the injection pipe to seal the injection pipe. In an oil tank for a vehicle comprising a pipe member, a pipe member is detachably inserted from a direction orthogonal to an axis of the injection pipe and a portion of a cap in a press-fitting margin, and an internal passage of the pipe member is connected to the tank. An oil tank for a vehicle, characterized in that the breather hose is connected to the internal space of the main body, one end of the pipe member is projected from the press-fitting margin, and a breather hose for adjusting the internal pressure of the tank main body to the atmospheric pressure is connected thereto. 2. A recess is formed in the cap so as to communicate with the internal space of the tank body, and at the press-fitting margin of the injection pipe and the cap, the cap penetrates in the direction orthogonal to the axis line of the press-fitting margin and communicates with the recess. An insertion hole is provided at one location on the circumference, the tip end of the pipe member is cut diagonally and inserted into the insertion hole so that the pipe member can be inserted and removed, and the rear end portion of the pipe member is projected from the injection pipe. The vehicle oil tank according to claim 1, wherein the breather hose is connected to the breather hose. 3. The cap is formed with a recess communicating with the internal space of the tank body, and a press-fitting margin between the injection pipe and the cap and an insertion hole penetrating the recess orthogonally to the axis are provided. The pipe member is removably inserted, both ends of the pipe member are projected from the peripheral surface of the injection pipe, one end of the pipe member is closed, and the pipe member has a diameter larger than the inner diameter of the insertion hole. The vehicle oil tank according to claim 1, wherein a portion is provided, and the breather hose is connected to the other end of the pipe member.