JPH0810682Y2 - Rollover valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a rollover valve, and more particularly to a rollover valve that can be easily mounted on a mounting portion.

[Prior art and its problems]

Generally, it is installed in a gasoline tank of an automobile or the like, and normally, the gasoline vapor and air in the gasoline tank are evacuated, and when the vehicle falls down, the gasoline tank in the gasoline tank is blocked so that the gasoline does not leak outside. The rollover valve having the structure is configured as shown in FIG.

That is, a hole 59 formed in the wall 58 of the gasoline tank.
A valve body 42 made of resin or the like is located inside, and inside the valve body 42 is fitted a bowl-shaped cavity 49 formed in a through hole 47 at the top and the inside of the valve body 42. The float 50 having the projection 51 for obtaining the float 50 is located, and the spring 52 for urging the float 50 upward is located.
The lower surface of is closed by a lid 53.

Since the gasoline is stored inside the wall surface 58 of the gasoline tank, the float 50 located in the inner space 48 of the valve body 42 has its own buoyancy and weight and the spring 52 is attached. It moves up and down due to equilibrium with the power, which normally removes the gasoline vapor and air inside the gasoline tank as described above.
It is designed to prevent gasoline from leaking in the event of a fall.

However, in the rollover valve 41 configured as described above, the rollover valve 41 is attached to the wall surface 58 of the gasoline tank via the packing 60. In this case,
Since it is necessary to mount the packing 60 on the valve body 42 by aligning the mounting hole 61 of the packing 60 with the mounting hole 54 of the valve body 42, it takes time to position the packing 60.

As a result, there is a problem in that the valve body 42 is complicatedly attached to the wall surface 58 of the gasoline tank.

In addition, as means for solving the above problems,
As shown in Fig. 10, a protrusion 91 is provided on the upper surface of the packing 90 in the figure, and the protrusion 91 is provided on the valve body 72 for positioning.
A device that facilitates positioning of the packing 90 on the valve body 72 by locating the packing 90 inside the device 74 has also been devised.

However, in the case of the above, the complexity of positioning the packing 90 on the valve body 72 is eliminated, but since the shape of the packing 90 is special, it takes time to mold the packing 90. However, as a result, there is a problem in that it becomes troublesome as a whole.

The present invention solves the above-mentioned problems of the conventional ones, and provides a rollover valve in which the packing can be easily positioned and easily attached to the hole of the wall surface of the gasoline tank. The purpose is.

[Means for solving problems]

In order to solve the above problems, the present invention has a through hole that communicates the inside and the outside of a gasoline tank, and is fixed to the outer peripheral surface of a hole formed in the wall surface of the gasoline tank by a fastening member. And a valve body having an outer peripheral surface with at least one protrusion forming a predetermined gap with the collar portion, and the valve body is provided inside the valve body to open and close the through hole. In a rollover valve including a float and an annular packing interposed between the opening peripheral edge portion of the hole and the flange portion, the valve body is mounted in the hole together with the protrusion, in the rollover valve, At least one protrusion for positioning is provided in a part, and packing is positioned between the protrusion and the flange so as to sandwich a part between the two and a part of the packing corresponding to the protrusion. The notch or hole through which the protrusion is engaged is provided, it is obtained by employing the means engaging the protruding portion into cutout portions or holes.

[Action]

According to this invention, by adopting the above-mentioned means, an annular packing is positioned between the flange portion and the protrusion on the outer peripheral surface of the valve body, and in this state, the packing is rotated in the circumferential direction so that the flange portion of the valve body is rotated. The packing is mounted on the outer peripheral surface of the valve body by engaging the protrusion provided on a part of the inside of the notch or the hole provided on the packing. In this case, since part of the packing is sandwiched between the flange portion and the protrusion of the valve body, the packing does not move in the axial direction on the outer peripheral surface of the valve body, and the flange portion of the valve body does not move. Since the protrusion engages with the notch or hole of the packing, the packing does not rotate in the circumferential direction on the outer peripheral surface of the valve body.

〔Example〕

Hereinafter, an embodiment of the present invention shown in the drawings will be described.

1 to 4 show a first embodiment of a rollover valve according to the present invention. FIG. 1 is a schematic sectional view showing the whole, and FIGS. 2 and 3 show a rollover valve. FIG. 4 is an explanatory diagram showing the relationship with the packing, and FIG. 4 is an explanatory diagram showing the packing.

That is, the rollover valve shown in FIGS. 1 to 4 has a valve body 2 mounted in a hole 19 formed in a wall surface 18 of a gasoline tank, a float 10 provided in the valve body 2 and a relief. It is composed of a valve 14.

The valve body 2 is made of a resin or the like, and a cavity 8 having a lower end opened is provided inside the valve body 2.
The upper portion is provided with a through hole 7 for the inside and the outside of the valve body 2, and the through hole 7 and the void 8 are connected by a bowl-shaped void 9.

Inside the space 8, there is provided a float 10 having a projection 11 which can be fitted into a bowl-shaped space 9 provided at the top thereof, and the float 10 is provided by a spring 12 provided therein. It is designed to be biased upward.

Since the float 10 in the void 8 is soaked in the gasoline in the gasoline tank at the time of installation, the float 10 moves up and down by its own buoyancy and weight and the urging force of the spring 12. Normally, the gasoline vapor and air inside the gasoline tank are removed, and at the time of a fall, the gasoline is prevented from leaking.

The opening at the lower end of the space 8 of the valve body 2 is closed by a lid 13.

Further, a relief hole 15 penetrating to the outer peripheral side of the valve body 2 is provided at an end portion of the through hole 7, and the relief hole 15 includes a poppet 16 and a spring 17. A relief valve 14 is provided, and normally the spring 17 biases the poppet 16 toward the opening of the hole 15 for the relief, that is, the gasoline tank side to close the opening. When the pressure in the gasoline tank exceeds the steady pressure due to the gasoline vapor, etc., the relief valve 14 is operated to release the high pressure due to the gasoline vapor in the gasoline tank, etc. It is designed to hold.

Further, on the outer peripheral surface of the valve body 2, a plurality of protrusions 4, 5 are formed so that an annular collar portion 3 is formed in the upper part of the drawing and a predetermined gap is formed between the annular collar part 3 and the lower part thereof. 5 are integrally provided at predetermined intervals in the circumferential direction, and these projections 4, 5,
An annular packing 20 is mounted between the collar 5 and the collar 3. Further, a part of the protrusions 4, 5, 5 is formed so as to be integrated with a corresponding protrusion 4a provided on the lower surface side of the flange 3.

Then, in order to mount the rollover valve 1 configured as described above into the hole 19 of the wall surface 18 of the gasoline tank,
First, locate the ring-shaped packing 20 on the outer peripheral surface of the valve body 2 and push it between the collar portion 3 and the plurality of protrusions 4, 5, 5.
In this state, rotate packing 20 in the circumferential direction to
The protrusion 4a on the lower surface side of the flange 3 of the valve body 2 is engaged with the notch 21 provided on the inner peripheral side of the.

In this way, the packing 20 is positioned at a predetermined position on the outer peripheral surface of the valve body 2. In this case, packing
A part of the inner peripheral side of 20 is sandwiched between the flange portion 3 of the valve body 2 and the plurality of projections 4, 5, 5 so that movement in the axial direction is prevented, and the inner peripheral side is Since the protrusion 4a on the lower surface side of the collar portion 3 of the valve body 2 is engaged with the notch portion 21 provided at, the rotation in the circumferential direction is prevented. Therefore, the packing 20 is fixed at a predetermined position on the outer peripheral surface of the valve body 2.

Then, the roll-over valve 1 is securely attached to the wall surface 18 of the gasoline tank by inserting the valve body 2 with the packing 20 mounted therein into the hole 19 of the wall surface 18 of the gasoline tank and tightening the bolts 23, 23. In this case, since the packing 20 can be attached to the valve body 2 simply by pushing the packing 20 between the protrusions 4, 5, 5 on the outer peripheral surface of the valve body 2 and the collar portion 3, It can be easily installed, and the notch 21 on the inner peripheral side of the packing 20 is provided with a protrusion on the lower surface side of the flange 3 of the valve body 2.
Since the 4a is engaged, the packing 20 will not be displaced in the circumferential direction during use and the sealing performance will not be impaired.

Therefore, the packing 20 does not have to be nervous, the mounting is easy and the complexity of the mounting is eliminated, and the wall 18 of the gasoline tank of the valve body 2 is removed.
It can be easily attached to.

In this embodiment, three protrusions 4, 5 and 5 are provided on the outer peripheral surface of the valve body 2 and one protrusion 4a is provided on the lower surface side of the flange portion 3 of the valve body 2. Without limitation, at least one protrusion and at least one protrusion may be provided.

A second embodiment of the rollover valve according to the present invention is shown in FIGS. 5 to 8. FIG. 5 is an explanatory sectional view showing the whole of the rollover valve, and FIGS. And FIG. 8 is an explanatory view showing the packing.

That is, the rollover valve 25 shown in this embodiment
Is integrally formed with a protrusion 26 projecting downward in the figure at the lower end of a relief hole 15 opening in the lower surface of the flange portion 3 of the valve body 2 in the figure, and the positioning matching the protrusion 26. Hole 31 for
The packing 30 provided with is fitted to the outer peripheral surface of the valve body 2 by engaging the positioning hole 31 with the projection 26, and in this state, the valve body 2 is attached to the wall surface 18 of the gasoline tank. Since it is mounted in the hole 19 of the above, and the other structure is the same as that shown in the first embodiment, the same parts as those in the first embodiment are the same. A number is given and detailed description thereof will be omitted.

Also in this embodiment, as in the first embodiment, the packing 30 can be easily attached to the outer peripheral surface of the valve body 2, and the packing 30 can be moved in the axial direction even during use. Part of the inner circumference of 30 is the protrusion 5,
It is prevented by being sandwiched between the Nos. 5 and 5 and the flange portion 3, and further, the rotation of the packing 30 in the circumferential direction is prevented by the positioning hole 31 of the packing 30 for the positioning of the valve body 2. The engagement with the portion 26 prevents the packing 30 from being displaced and adversely affecting the sealing property during use.

Also in this embodiment, since the packing 30 can be easily attached to the valve body 2, the rollover valve 25 can be easily attached to the wall surface 18 of the gasoline tank.

In this embodiment, one projecting portion 26 is provided at the lower end of the relief hole 15 on the lower surface of the collar portion 3. However, the present invention is not limited to this, and any portion of the lower surface of the collar portion 3 may be provided. It is also possible to provide at least one protrusion without being limited to one.

[Effect of device]

The present invention has the following effects by being configured as in claim 1.

That is, the packing is positioned between the flange portion and the protrusion of the valve body, and in this state, the packing is rotated in the circumferential direction so that the notch or hole of the packing engages the protrusion for positioning the valve body. Then, the packing is mounted on the outer peripheral surface of the valve body.

In this case, a part of the packing is sandwiched between the flange and the protrusion of the valve body, so that the packing is prevented from moving in the axial direction, and the notch or hole has a protrusion of the flange of the valve body. Are engaged with each other, the rotation in the circumferential direction is prevented.

As a result, by simply mounting the packing on the outer peripheral surface of the valve body and rotating the packing in the circumferential direction, the packing can be positioned at a predetermined position on the outer peripheral surface of the valve body and held at that position. Become. In this state, the roll-over valve is fixed to the wall surface of the gasoline tank by mounting the valve body together with the protrusion in the hole on the wall surface of the gasoline tank, and fixing the flange portion to the peripheral edge of the opening of the hole with the fastening member. become.

Therefore, when installing the rollover valve on the wall surface of the gasoline tank, there is no risk that the packing will fall off from the valve body, and there is no need to adjust the mounting position of the packing after installation, and the wall surface of the gasoline tank of the rollover valve It becomes easy to attach to. Further, since the collar portion is fixed to the peripheral portion of the hole by the fastening member, the safety and reliability of the gasoline tank can be maintained for a long time.

[Brief description of drawings]

1 to 4 show a first embodiment of a rollover valve according to the present invention, FIG. 1 is a schematic sectional view showing the whole, and FIG. 2 is an explanatory view showing a relationship between a packing and a rollover valve. FIG. 3 is a side view of what is shown in FIG. 2, FIG. 4 is an explanatory view showing packing, and FIGS. 5 to 8 show a second embodiment of the rollover valve according to the present invention.
FIG. 5 is a schematic sectional view showing the whole, FIG. 6 is an explanatory view showing the relationship between the packing and the rollover valve, FIG. 7 is a side view of what is shown in FIG. 6, and FIG. 8 is an explanatory view showing the packing. 9 and 10 are cross-sectional explanatory views showing a conventional rollover valve. 1, 25, 41, 71 ...... Rollover valve 2, 42, 72 ...... Valve body 3 ...... Flange part 4, 5, 11, 51, 81, 91 ...... Protrusion 7, 47, 77 ...... Through hole 8 , 48, 78 ... vacant space 9, 49, 79 ...... bowl-shaped vacant space 10, 50, 80 ...... float 12, 17, 52, 82 ...... spring 13, 53, 83 ...... lid 14 ...... relief valve 15 …… Relief hole 16 …… Poppet 18, 58, 88 …… Wall surface 19, 31, 54, 59, 61, 74, 89 …… Hole 20, 30, 60, 90 …… Packing 21, 22 …… Notch Part 23 …… Bolts 4a, 26 …… Projection

Claims (1)

[Scope of utility model registration request] 1. A fastening member (23) having a through hole (7) for communicating the inside and the outside of a gasoline tank, and a hole (19) formed in a wall surface (18) of the gasoline tank on an outer peripheral surface thereof. ), And has at least one protrusion (4) (5) (5) on the outer peripheral surface thereof that forms a predetermined gap with the flange (3). A valve body (2), a float (10) provided inside the valve body (2) for opening and closing the through hole (7), a peripheral edge portion of the hole (19) and the collar portion (3). An annular packing (20) (30) interposed between the roll and the valve body (2) mounted in the hole (19) together with the protrusions (4) (5) (5). In the over valve, at least one positioning protrusion (4a) (26) is provided on a part of the collar (3). It said projection (4) (5) (5)
The packings (20) and (30) are positioned between the flange (3) and the flange (3) to sandwich a part of the packing (20) (30), and the protrusions (4a) (26) ), A notch (21) or a hole (31) with which the protrusion (4a) (26) engages is provided, and the notch (21) or hole (31) has the protrusion (4a). ) A rollover valve characterized by engaging (26).