JP2989754B2 - Iron and valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to irons and valves.

[0002]

2. Description of the Related Art Steam irons are classified into a so-called swing lever type and a so-called push lever type. That is, the swing lever type has an operation lever that swings in a horizontal plane, and the swing operation of the lever opens and closes a valve in the iron body, and steam is ejected from a steam hole on the bottom surface of the base. To keep the open state in a stable state,
This iron is suitable for applying steam to a large area. Also, the push lever type has a pressing lever that swings in the vertical plane, usually holds the valve in the iron body in a closed state and presses the lever downward to open the valve. It is an iron that ejects steam from a steam hole on the bottom surface of the base and is suitable for applying steam to a small area.

[0003] However, the steam valve of the conventional swing lever type iron has a valve stem which is screwed into a hole of the valve body so as to be able to advance and retreat, and the above-mentioned operation lever is attached to this valve stem. By swinging the operation lever, the valve stem is advanced and retracted, thereby opening and closing.

Further, in a steam valve of a push lever type iron, a valve stem is inserted into a hole of a valve body so as to be slidable in the axial direction, and the above-mentioned pressing lever is attached to the valve stem. The valve stem is depressed by a resilient member provided inside and is kept in a closed state. Then, by depressing the pressing lever, the valve stem is raised to open the valve.

[0005]

By the way, in the swing lever type iron, the operating lever must be swung many times during the work, and in the above-mentioned conventional one,
It is necessary to swing the operation lever from the open state to the closed state or from the closed state to the open state, and since the swing range is wide and the operation lever is heavy, the fingers are tired and workability is poor. I was

In a push lever type iron,
Because of the sealing material between the outer peripheral surface of the valve stem and the inner peripheral surface of the hole, the operation of the operating lever for reciprocating the valve stem in the axial direction is relatively heavy, and in this case, the operation is also heavy. Was difficult to do.

Accordingly, it is a first object of the present invention to provide an iron (swing lever type) which is excellent in workability and can be opened and closed without fatigue of fingers.

A second object is to provide a valve which is excellent in durability and suitable for ironing.

It is a third object of the present invention to provide a valve capable of rotating a valve stem lightly.

It is a fourth object of the present invention to provide a valve which can lightly reciprocate a valve stem along an axial direction.

[0011]

According to the present invention, in order to achieve the above-mentioned object, an iron according to the present invention is opened and closed by rotation of a valve stem around an axis thereof, and in an open state thereof, a base of steam is provided. An iron provided with a steam valve for supplying to a steam hole on a bottom surface, wherein an operation lever for performing an opening and closing operation is connected to the valve rod, and is pressed in a direction for swinging the operation lever in an opening direction in an open state. And an operating lever swing / lock mechanism which holds the open state and swings the operating lever in the closing direction by applying a slight external force in the closing direction to close the operating lever. is there.

As the operating lever swinging / locking mechanism, the operating lever swinging / locking mechanism includes a compression spring interposed between the operation lever and the iron body, and the compression spring can swing. In a state where the distal end portion is displaced from the center line in the straight state of the compression spring, a rotational force in the displacement direction may be applied to the operation lever.

According to one aspect of the present invention, there is provided a valve stem which reciprocates in a direction approaching / separating from a valve seat by rotation about an axis, and movement of the valve stem in a direction away from the valve seat. A valve body separated from the valve seat by steam pressure, and a blind hole having a tapered surface portion that sequentially expands toward the valve seat side on the valve seat corresponding surface of the valve stem. In addition, the valve body is provided with a spherical portion which abuts on the tapered surface of the blind hole and fits into the blind hole.

Another valve according to the present invention is a valve which is opened and closed by rotation of a valve stem around an axis thereof, which comprises a large-diameter thick portion and a small-diameter thin portion and through which the valve stem is inserted. A cylindrical body made of a resin is fitted inside a hole of a valve body into which a valve stem is inserted, a seal ring is further fitted on a thin portion of the cylindrical body, and the seal is provided on a surface corresponding to the seal ring. The ring body into which the ring is received and the valve stem is inserted is fitted in the hole, and the inner end edge of the seal ring-corresponding surface of the ring body is pressed against the seal ring side of the ring body. A gradient surface is formed to reduce the diameter of the thin portion of the cylindrical body so as to press the outer peripheral surface of the valve stem through the seal ring.

Another valve according to the present invention is a valve that opens and closes by reciprocating the valve stem in the axial direction, and a resin bush through which the valve stem is inserted is fitted into a hole of the valve body. Along with
A seal ring is externally fitted to the cylindrical portion of the bush, and a resin cylindrical body into which the valve stem is inserted is fitted inside the hole of the valve body, and a seal ring side of the cylindrical body is provided. A sloped surface is formed at an end of the bush so that the diameter of the cylindrical portion of the bush is reduced by pressing the bush toward the seal ring so that the cylindrical portion of the bush is pressed against the outer peripheral surface of the valve stem via the seal ring.

[0016]

In the open state, the open state is maintained by the operation lever swing / lock mechanism, and steam is jetted from the steam holes in the bottom surface of the base. In this open state, if a slight external force is applied to the operation lever so as to swing the operation lever in the closing direction (the direction in which the operation lever is closed), the operation lever swing / lock mechanism causes the operation lever to rotate. It swings in the closing direction, and the closed state is maintained.

Therefore, the operation lever can be operated with a light force, and the operation lever can be easily swung many times during the operation.

If the operating lever swing / lock mechanism has a compression spring, the oscillating tip of the compression spring is displaced from the center line of the compression spring in a straight state, and the operation lever is moved to the operating lever. Since the rotational force in the displacement direction is applied, if the displacement direction is the direction in which the valve is opened, the valve is opened, and this state is maintained, and the displacement direction is changed to the closed state. In this direction, the valve is closed, and this state is maintained. In other words, if the operating lever is slightly swung so that the oscillating tip of the compression spring is displaced from the center line in the straight state, the elasticity of the compression spring causes the operating lever to move in the direction of displacement. Since the rotation is given, the opening / closing operation becomes easy.

When the valve stem moves in a direction away from the valve seat (according to the third aspect of the invention), the valve stem (separate from the valve stem) is moved by the steam pressure with the movement. The body is
It is separated from the valve seat and becomes open. In addition, if the valve stem is rotated about its axis from the open state and moved in the direction approaching the valve seat, the spherical portion is fitted into the blind hole while in contact with the tapered surface portion. As the valve stem approaches the valve seat, the valve body also approaches the valve seat. As a result, the valve body comes into close contact with the valve seat and is brought into a closed state.

In this case, the spherical portion of the valve body is guided by the tapered surface portion, and the surface portion corresponding to the valve seat comes into close contact with the valve seat without displacement.

According to the fourth aspect of the present invention, when the ring body is pressed toward the seal ring by the vapor pressure, the ring body presses the seal ring, thereby forming a thin portion of the cylindrical body. Is reduced in diameter, and exhibits an excellent sealing effect. Further, the outer peripheral surface of the valve stem is in sliding contact with the inner peripheral surface of the cylindrical body made of resin, so that the valve stem can be smoothly rotated.

When the bush is pressed toward the seal ring by the vapor pressure, the bush presses the seal ring, thereby reducing the diameter of the cylindrical portion of the bush. And exhibit an excellent sealing effect. Further, the outer peripheral surface of the valve stem is in sliding contact with the resin bush and the resin cylindrical body, and the valve stem can be smoothly reciprocated in the axial direction.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

FIGS. 5 and 6 show an iron (swing lever type) according to the present invention. The iron is provided with an iron body 3 having a base heater 1 and a shuttle heater 2 therein, and protruding from the iron body 3. And a steam valve 5 shown in FIG. 1 is provided in the iron main body 3.

The steam valve 5 opens and closes by rotation of the valve rod 6 about its axis, and supplies steam to the steam holes in the base bottom surface 7 (see FIG. 5) in the open state.

The steam valve 5 includes the above-described valve stem 6 and the valve stem 6.
Body 9 having a hole 8 into which is screwed so as to be able to advance and retreat.
And. Further, the valve body 9 includes a main body 12 having a steam supply passage 10 and a steam discharge passage 11, and a cylinder 14 screwed into a hole 13 of the main body 12.

That is, the main body 12 is formed of a bottomed cylindrical body, and the bottom wall 15 is provided with the steam supply passage 10 and the steam discharge passage 11. The steam supply passage 10 includes a first hole 10a whose axis coincides with the axis of the valve body 9, and a second hole 10b whose axis is orthogonal to the axis of the first hole 10a. The first hole 11a has a first hole 11a whose axis is parallel to the axis of the valve body 9, and a second hole 11b whose axis is orthogonal to the axis of the first hole 11a.

The cylindrical body 14 is provided with an outer flange 16 at the center of the outer peripheral surface along the circumferential direction.
7 and 18 are provided, and one of the screw portions 17 is screwed into the screw portion 19 of the hole 13 of the main body portion 12 to be integrated with the main body portion 12. A circumferential cutout 20 is formed at the opening edge of the main body 12, and a seal ring 21 is fitted into the cutout 20. A cap nut member 22 is screwed to the other screw portion 18 of the cylindrical body 14.

A screw portion 23 is formed on the inner peripheral surface of the cylinder 14, and a screw portion 24 provided at the lower end of the valve rod 6 is screwed into the screw portion 23 so as to be able to advance and retreat.

Thus, a part of the hole 13 of the main body 12 and the cylindrical body
The hole 8 described above is formed by the hole 14 and the hole 8. The hole 8 has a valve body 25 made of a member different from the valve rod 6.

The valve body 25 includes a disk portion 25a and the disk portion 25a.
And a spherical portion 25b erected on the upper surface of the disk portion 25.
The seal member 26 is attached to the lower surface of the substrate a. In addition, the valve body 25 is provided with a blind hole 27 that opens on the lower surface of the disk 25a. Therefore, the sealing material 26 is received at a part of the bottom surface 13 a of the hole 13 of the main body 12, and the bottom surface 13 a
Is a valve seat 28.

A blind hole portion 31 having a tapered surface portion 30 which expands toward the valve seat 28 side is provided in the valve seat corresponding surface 29 of the valve stem 6 in order. The spherical portion 25b of the valve body 25 is fitted. At this time, the spherical portion 25b is
Abut. The blind hole portion 31 is specifically a conical hole in the illustrated example.

That is, as shown in FIG.
When the valve body 25 approaches the valve seat 28 and the valve body 25 is in close contact with the valve seat 28, the steam supply passage
Even if the first hole 10a of 10 is located and the steam entering from the second hole 10b of the steam supply passage 10 enters the blind hole 27 of the valve body 25, it does not leak into the hole 8.

The outer peripheral surface of the valve stem 6 and the inner peripheral surface of the hole 8 are sealed by the seal structure 32. The seal portion structure 32 includes a cylindrical body 33 fitted in the hole 8 and the cylindrical body 33.
It comprises a seal ring 34 externally fitted to 33, and a ring body 35 received in the hole 8 to receive the seal ring 34.

The cylindrical body 33 is made of, for example, a synthetic resin such as a fluororesin, and as shown in FIG.
A thin-walled portion 37 with a small diameter is provided.
34 is fitted outside.

The ring body 35 is received by the step portion 39 of the hole 8 and the sealing ring-corresponding surface 38 of FIGS.
The seal ring 34 is received as shown in FIG. A slope 40 is formed on the inner edge of the ring body 35 and gradually expands toward the seal ring 34. That is, the end of the thin portion 37 of the cylindrical body 33 is fitted into the notch for forming the inclined surface 40.

Therefore, as shown by the arrow A in FIG. 4, when a pressing force acts on the lower surface of the ring 35 (the surface opposite to the seal ring corresponding surface 38), the ring 35 presses the seal ring 34. In this case, the cylindrical body 33 is received by the cap nut member 22, cannot move in the opposite direction to the valve seat 28, and the seal ring 34 is formed between the inner peripheral surface of the hole 8 and the thin portion 37. Since it is interposed between the outer peripheral surface and the outer peripheral surface, the seal ring 34 presses the thin portion 37 in the arrow B direction. That is, the diameter of the thin portion 37 is reduced, and the inner peripheral surface thereof is in close contact with the outer peripheral surface of the valve stem 6. Thereby, the space between the outer peripheral surface of the valve stem 6 and the inner peripheral surface of the hole 8 is reliably sealed.

As shown in FIGS. 2 and 5, the valve rod 6 is provided with an operating lever for opening and closing the steam valve 5 described above.
41 are connected in series. That is, the base 41a of the operation lever 41 is screwed into a screw portion 42 provided at the base end of the valve stem 6, and the operation lever 41 is swung in a horizontal plane in the direction of arrow C shown in FIG. When this is done, the valve stem 6 advances as shown in FIG. 1A, and the valve body 25 comes into close contact with the valve seat 28 to maintain the closed state. By swinging in a horizontal plane in the direction of arrow D shown in FIG. 2 (c), the valve stem 6 is screwed back as shown in FIG. 1 (b), and the valve body 25 is separated from the valve seat 28. And open.

By the way, as shown in FIG. 1B, when the valve rod 6 moves in a direction away from the valve seat 28, the valve body 25 is in a free state. If the steam is supplied to the steam supply passage 10, the valve body 25 is moved by the pressure of the steam entering the hole 27 of the valve body 25 from the first hole 10a of the steam supply passage 10 so that the valve stem 25 6 side,
The steam is separated from the valve seat 28, whereby the steam enters the hole 8, flows through the hole 8 through the steam discharge passage 11 as shown by the arrow G, and passes through a steam passage (not shown) from the steam hole in the base bottom surface 7. It is gushing.

When the operating lever 41 is operated from the state shown in FIG. 1B to move the valve rod 6 closer to the valve seat 28, the spherical portion 25b of the valve body 25 becomes tapered. As shown in FIG. 1 (a), it moves parallel to the valve seat 28 and is brought into a closed state.

As shown in FIG. 2, the operation lever 41 is provided with an operation lever swing / lock mechanism 45 connected thereto. When the valve 5 is in the open state, the swing / lock mechanism 45 holds the open state by pressing the operating lever 41 in the opening direction, and applies a slight external force to the operating lever 41 in the closing direction. Is used to swing the operation lever 41 in the closing direction to bring it into the closed state.

More specifically, a blind hole 46 is provided in the iron body 3, and one end 47 a of a compression spring 47 is fitted into the hole 46. A spring holder 48 is pivotally attached to the base 41a of the operation lever 41, and the other end 47b of the compression spring 47 is held by the holder 48. That is, the spring holder 48 is, for example, swingable as shown by arrows H and I (see (b) in FIG. 2) on the base 41a of the operation lever 41 via the pivot pin 49.
And a shaft 51 protruding from the frame body 50.
The shaft 51 is inserted into the other end portion 47b of the frame 50, and the end face of the compression spring 47 is pressed against the frame 50.

Accordingly, the other end 47b of the compression spring 47 becomes the front swingable tip 52, and in the straight state, as shown in FIG. The center lines of the levers 41 coincide. That is, as shown in FIG. 2B, in the straight state, the compression spring 47
The base 41a of the operation lever 41 is pressed as shown by an arrow along the center line L, and holds the state shown in FIG.

When the operating lever 41 is slightly swung in the direction of arrow C as shown in FIG. 2A from the state shown in FIG. 2B, the operating lever 41 Over, compression spring
Due to the resilience of 47, a rotational force in the direction of arrow C is applied to the base 41a of the operating lever 41, the operating lever 41 swings in the closing direction, the valve 5 is closed, and that state is maintained. You.

Conversely, as shown in FIG. 2C from the state shown in FIG.
The operating lever 41 passes through the dead center, and the base 41a of the operating lever 41 is given a rotational force in the direction of the arrow D by the resilient force of the compression spring 47, and the operating lever 41 is opened to change its state. Will be retained.

That is, in a state where the oscillating tip 52 of the compression spring 47 is displaced from the center line L in the straight state, a rotational force in the displacement direction is applied to the operation lever 41.
In (a), the displacement direction is the direction of arrow C, and the closed state is set. In (c) of FIG. 2, the displacement direction is the direction of arrow D,
Leave open.

When the operating lever 41 swings in the direction of arrow C, the spring holder 48 swings relative to the base 41a of the operating lever 41 as shown by arrow I, and the operating lever 41 moves in the direction of arrow D. When swinging, the spring holder 48 swings as shown by the arrow H with respect to the base 41a of the operation lever 41, and can follow the swing. I have.

Accordingly, from the closed state shown in FIG.
When a slight external force in the direction of arrow D is applied to the operation lever 41 and the operation lever 41 exceeds the dead center, the operation lever 41 is opened as shown in FIG. 2C and held in this state. 2 (c)
From the state shown in FIG.
When the operating lever 41 exceeds the dead center, the closed state shown in FIG. 2A is maintained.

Thus, if this iron is used,
The opening and closing operation of the steam valve 5 is extremely easy.
Even if this switching operation is performed many times, the finger is not tired.

Since the above-described iron is provided with the base heater 1 and the shuttle heater 2 as shown in FIG. 6, the base heater 1 can heat the base bottom surface 7 to a predetermined temperature. Further, the steam supplied to the iron body 3 can be heated by the kettle heater 2 so that steam at an optimum temperature can be ejected from the steam holes. Either the base heater 1 or the shuttle heater 2 may be omitted, or both may be omitted.

Next, FIG. 7 shows another embodiment, in which a push-type iron is used.

That is, this iron has a pressing lever 55
The steam valve 56 (see FIG. 8) which is opened by pressing the pressing lever 55 is provided.

The steam valve 56 has a valve body 58 having a hole 57.
And a valve rod 59 inserted into the hole 57 of the valve body 58. The valve rod 59 is opened and closed by the axial reciprocation of the valve rod 59.

That is, the valve body 58 includes a main body 62 having a steam supply passage 60 and a steam discharge passage 61, and a cylinder 64 screwed into a hole 63 of the main body 62. The main body 62 is the same as the steam valve 5 shown in FIG. 1, the steam supply passage 60 includes a first hole 60a and a second hole 60b, and the steam discharge passage 61 includes a first hole 61a and a second hole 61a. 61b.

The cylindrical body 64 is provided with an outer flange 66 at the center of the outer circumference along the circumferential direction, and a screw 67 at one end of the outer circumferential surface. By screwing into the screw portion 68 of the main body portion. Reference numeral 69 denotes a seal ring for sealing between the inner peripheral surface of the main body 62 and the outer peripheral surface of the cylindrical body 64.

The valve stem 59 has a large-diameter portion 70 formed at the tip thereof, and an end surface of the large-diameter portion 70 is abutted against a valve seat 71.
72 are fitted. A washer 73 is externally fitted to the valve stem 59, and a resilient member 74 made of a coil spring is externally fitted to the valve stem 59 between the washer 73 and the large-diameter portion 70.

The outer peripheral surface of the valve stem 59 and the hole of the valve body 58
57 (consisting of part of the hole 63 of the main body 62 and the hole of the cylindrical body 64)
Is sealed with the inner peripheral surface by a seal portion structure 75.
The seal structure 75 is a resin bush through which the valve stem 59 is inserted.
76, a seal ring 77 fitted externally to the cylindrical portion 76a of the bush 76, a resin cylindrical body 78 into which the valve stem 59 is inserted,
Consists of

As shown in FIG. 9, the cylindrical body 78
The lower end portion is a large diameter portion 78a, and an end portion on the seal ring 77 side, that is, an inner peripheral surface of the large diameter portion 78a is provided with a seal ring 77a.
On the side, a sloping surface 80 that gradually expands is provided. And
The cylindrical body 78 has a large-diameter portion 78a formed by a step 79 of the hole 57.
To prevent it from slipping out of the hole 57, and the slope 80
Of the seal ring 77 is engaged with the upper outer peripheral edge of the seal ring 77.

Therefore, as shown in FIG. 10, when the bush 76 is pressed through the washer 73 as shown by the arrow A, the bush 76 is pressed.
Presses the seal ring 77. In this case, the cylindrical body 78 is locked to the step portion 79, cannot move in the opposite direction to the valve seat 71, and the seal ring 77 is formed between the cylindrical portion 76a of the bush 76 and the hole 57. Since it is interposed between the inner peripheral surface and the seal ring 77, the cylindrical portion 76a of the bush 76
Press in the direction. That is, the diameter of the cylindrical portion 76 a is reduced, and the inner peripheral surface thereof is in close contact with the outer peripheral surface of the valve stem 59.

In this case, the cylindrical body 78 and the bush 76
Both are preferably formed from a fluororesin.

Accordingly, the valve stem 59 can smoothly reciprocate along the axial direction, and even when steam enters the hole 57, the bush 76 is pressed against the bush 76 in the direction of arrow A as described above. Acts on the cylindrical portion of the bush 76.
76a comes into close contact with the valve stem 59 and exhibits an excellent sealing function.

At the base end of the valve stem 59, the fork 81
The fork 81 is formed with a base 55a of the pressing lever 55.
Is inserted. That is, the fork 81 is provided with a roller 82 and a pin 83, and the base 55 a of the pressing lever 55 is inserted between the roller 82 and the pin 83.

The supporting body 84 is provided on the cylinder 64 of the valve body 58.
The pressing lever 55 is pivotally supported by the support frame 84 via a pivot shaft 85.

Therefore, normally, as shown in FIG. 8A, the valve rod 59 is pressed toward the valve seat 71 by the resilience of the resilient member 74, and the contact member 72 is pressed against the valve seat 71. Closely closed.

However, when the pressing lever 55 is pressed down as shown by the arrow K shown in FIG.
Swings in the vertical plane about the pivot shaft 85, and its base 55a is pushed up as shown by the arrow M, and the valve stem 59 separates from the valve seat 71 against the elastic force of the elastic member 74. Then, it is opened.

That is, as shown by the arrow from the steam supply path 60, the hole 57
The steam that has entered is discharged from the steam discharge path 61 as shown by the arrow.

Next, FIG. 11 shows another embodiment, in which the iron is a swing lever type. That is, the iron main body 3 is used as the main body 12 of the valve body. Specifically, a screw hole 86 is formed in the iron body 3 and the screw hole 86 is formed.
Then, one of the screw portions 17 of the cylindrical body 14 is screwed together, and the valve stem 6 is inserted into the hole 8 formed by the hole of the cylindrical body 14 and a part of the screw hole 86. At this time, the screw portion 24 of the valve stem 6 is screwed into the screw portion 23 of the hole 8.

However, also in this case, a blind hole 31 having a tapered surface portion 30 is formed on the surface of the valve stem 6 corresponding to the valve seat.
The spherical portion 25b of the valve body 25 fits into the blind hole 31.

A small screw hole 87 is provided on the bottom surface 86a of the screw hole 86, and a valve seat forming member 88 is provided in the small screw hole 87.
Is screwed. The valve seat forming member 88 includes a disc portion 88a,
A screw shaft portion 88b hanging down from the disk portion 88a,
A shaft hole 89 is formed through the shaft center. That is, the screw shaft portion 88b is screwed into the small screw hole 87, and the valve seat forming member
The upper surface of the disk portion 88a becomes the valve seat 28 for receiving the valve body 25.

The shaft hole 89 of the valve seat forming member 88 is connected to the shuttle 90 of the iron body 3.

Note that the same reference numerals as those of the valve shown in FIG. 1 denote the same members as those of the valve of FIG. 1, and a description thereof will be omitted.

Therefore, in this case as well, if the operation lever 41 (not shown) is swung to retreat the valve rod 6, the valve body 25 is in a free state, and the valve body 25 is blinded from the axial hole 89. The steam that has entered the hole 27 raises the valve body 25, separates it from the valve seat 28, and opens. When the valve is in the open state, steam is ejected from a steam outlet of a valve base bottom surface 7 through a steam discharge passage (not shown).

When the operating lever 41 is operated from the open state to bring the valve stem 6 closer to the valve seat 28 side, the valve body 25 is moved while the spherical portion 25b is guided by the tapered surface portion 30. To the side, as shown in FIG. 11, closely adhered to the valve seat 28,
It is closed.

Incidentally, this valve is also securely sealed by the seal portion structure 32. It is also preferable that an operation lever swing / lock mechanism 45 shown in FIG.

In the embodiment shown in FIGS. 1 and 11, the blind hole 31 is a conical hole having a triangular cross section. Since it is sufficient that the portion 25b has a tapered surface portion that abuts, the spherical portion 25
The bottom of the hole that b does not contact may not be a tapered surface that is continuous with the tapered surface 30, and the inclination angle of the tapered surface 30 may be freely changed. When the open state shown in (b) is changed to the closed state shown in (a) of FIG. 1, the spherical portion 25b of the valve body 25 is guided and the valve body 25 is brought into close contact (close contact) with the valve seat 28 in parallel. It is necessary to set the angle to be able to be set, and specifically, it is preferable to set the angle to about 45 °.

[0076]

Since the present invention is configured as described above, the following effects can be obtained.

According to the iron according to the first aspect, the open state or the closed state can be securely held, and the switching from the open state to the closed state is performed by applying a slight external force to the operation lever 41. It is very simple to apply, and even if the operation lever is operated many times, the finger is not tired and the operability is excellent.

In particular, the operation lever swing / lock mechanism 45
However, the one provided with the compression spring 47 is extremely easy to open and close with the operation lever 41, and is excellent in workability.

According to the valve of the third aspect, friction between the valve seat 28 and the valve body 25 hardly occurs, and damage to the valve seat 28 and the valve body 25 can be effectively prevented, and stable for a long period of time. An opening and closing operation can be performed.

According to the valve of the fourth aspect, an excellent sealing effect is exhibited, and the rotation of the valve shaft 6 around the axis can be smoothly performed, so that the opening and closing operation can be easily performed.

According to the valve of the fifth aspect, an excellent sealing effect is exhibited, and the axial reciprocation of the valve rod 6 can be smoothly performed, so that the opening and closing operation can be easily performed.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of an iron according to the present invention.

FIG. 2 is a simplified diagram of an operation lever swing / lock mechanism.

FIG. 3 is an exploded enlarged sectional view of a seal portion structure.

FIG. 4 is an enlarged sectional view of a seal portion structure.

FIG. 5 is a perspective view of the entire iron.

FIG. 6 is a simplified sectional view of a main part of the iron.

FIG. 7 is an overall perspective view of another iron.

FIG. 8 is a sectional view of a main part.

FIG. 9 is an exploded enlarged sectional view of the seal portion structure.

FIG. 10 is an enlarged sectional view of a seal portion structure.

FIG. 11 is a sectional view of a main part of another iron.

[Explanation of symbols]

 3 Iron body 5 Steam valve 6 Valve rod 7 Base bottom 8 Hole 9 Valve body 25 Valve body 25a Spherical part 28 Valve seat 29 Valve seat corresponding surface 30 Tapered surface 31 Blind hole 33 Cylindrical body 34 Seal ring 35 Ring body 36 Thick part 37 Thin part 38 Seal ring-compatible surface 40 Slope surface 41 Operating lever 45 Operating lever swing / lock mechanism 47 Compression spring 52 Swingable tip 57 Hole 58 Valve body 59 Valve stem 76 Bush 76a Cylindrical part 77 Seal Ring 78 Cylindrical body 80 Slope L Center line

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ identification code FI G05G 5/00 G05G 5/00 B (58) Field surveyed (Int.Cl. ⁶ , DB name) D06F 75/00-75 / 14 F16K 1/00-1/54 F16K 31/44-31/60 G05G 5/00

Claims (5)

(57) [Claims] An iron provided with a steam valve (5) for opening and closing by rotating the valve stem (6) around an axis thereof and supplying steam to a steam hole of a base bottom surface (7) in an open state. ,
An operation lever 41 for performing opening and closing operations is provided in series, and in the open state, the operation lever 41 is pressed in a direction of swinging in the opening direction to maintain the open state and slightly move the operation lever 41 in the closing direction. An iron provided with an operation lever swing / lock mechanism 45 that swings the operation lever 41 in a closing direction by applying an external force to bring the operation lever 41 into a closed state. 2. The operating lever rocking / locking mechanism 45,
A compression spring 47 interposed between the operation lever 41 and the iron main body 3, the oscillating tip 52 of the compression spring 47 being displaced from a center line L of the compression spring 47 in a straight state; The iron according to claim 1, wherein a rotational force in a displacement direction is applied to the operation lever (41). 3. A valve rod 6 which reciprocates in a direction approaching / separating from a valve seat 28 by rotation about an axis, and a vapor pressure accompanying the movement of the valve rod 6 in a direction away from the valve seat 28. And a valve body 25 separated from the valve seat 28, and a tapered surface portion 30 having a tapered surface portion 30 sequentially expanding toward the valve seat 28 side in the valve seat corresponding surface 29 of the valve rod 6. Together with 31
A valve, wherein the valve body (25) is provided with a spherical portion (25b) that abuts against the tapered surface portion (30) of the blind hole (31) and fits into the blind hole (31). 4. A valve which is opened and closed by rotation of the valve stem 6 around its axis, comprising a large-diameter thick portion 36 and a small-diameter thin portion 37, and a resin cylinder through which the valve stem 6 is inserted. The body 33 is fitted into the hole 8 of the valve body 9 into which the valve stem 6 is inserted.
The seal ring 34 is externally fitted to the thin portion 37 of the cylindrical body 33, and the ring body 35 in which the seal ring 34 is received at the seal ring corresponding surface 38 and the valve rod 6 is inserted is inserted into the hole 8
And the surface of the ring body 35 corresponding to the seal ring.
The thin portion 37 of the cylindrical body 33 is pressed against the seal ring 34 side of the ring body 35 at the inner edge of the
A valve having a sloped surface 40 for reducing the diameter of the valve stem 6 so as to be pressed against the outer peripheral surface of the valve stem 6 through a valve 34. 5. A valve that opens and closes by reciprocating in the axial direction of a valve stem 59, wherein a resin bush 76 through which the valve stem 59 is inserted is fitted into a hole 57 of the valve body 58, The seal ring 77 is externally fitted to the cylindrical portion 76a of the valve body 76, and the resin cylindrical body 78 into which the valve rod 59 is inserted is inserted into the hole of the valve body 58.
At the end of the cylindrical body 78 on the seal ring 77 side, the bush 76 is pressed against the seal ring 77 side, and the cylindrical portion 76a of the bush 76 is valved through the seal ring 77. A valve characterized in that a gradient surface (80) for reducing the diameter of the rod (59) so as to be pressed against the outer peripheral surface of the rod (59) is formed.