JPH0748201Y2 - Fuefuki Kettle - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a whistle blowing kettle having an opening formed in an upper portion of a kettle body and having a lid which can be freely inserted into and removed from the opening. .

[Conventional technology]

Some whistle blowing kettles have a mouthpiece with a whistle that can be opened and closed at the spout of the kettle body, an opening is formed at the top of the kettle body, and the lid body can be removably fitted into the opening. .

For example, in Japanese Utility Model Publication No. 60-37054, a cylindrical opening wall 11 is formed on the top wall 10 of the kettle body as shown in FIG. 5, and a lid is fitted in the opening 12 formed by the opening wall 11. The body 13 is composed of a lid wall 16 having a diameter larger than that of the opening 12 and a cylindrical wall 14 on the lower surface side thereof, and the cylindrical wall 14 is formed of a thin metallic material having elasticity and close to the lower end of the outer peripheral surface of the cylindrical wall 14. , A plurality of convex portions 15 are provided at intervals in the circumferential direction, and the relationship between the inner diameter D1 of the opening wall, the outer diameter D2 of the cylindrical wall, and the protrusion height t of the convex portion is D2 + 2t>D1> D2. When the fitting and opening operations of the lid body 13 are described, the cylindrical wall 14 is elastically deformed in the inner peripheral direction so that the cylindrical wall 14 can be easily fitted and removed, and in the fitted state, The convex portion 15 elastically abuts on the inner peripheral surface of the opening wall 11 and does not come off at a vapor pressure enough to whistle, but comes off only at an abnormally high pressure when a bumping phenomenon occurs. Fitting retaining force of time has had an effect that is obtained.

[Problems to be solved by the device]

In the above-mentioned whistle-blowing kettle, a stainless steel plate is generally used as a thin metallic material having elasticity and elasticity forming the cylindrical wall of the lid. However, when the lid is formed of a stainless steel plate, it is durable and does not deform even after long-term use, but it requires a large force even for a slight elastic deformation.
On the other hand, if the number and the number of convex portions formed on the cylindrical wall are large, the machining itself becomes troublesome and it becomes difficult to maintain the dimensions with high accuracy. Therefore, in the above-mentioned conventional technique, the expected effect may not be obtained due to a slight dimensional error, and the processing cost may increase.

Therefore, the present invention has been made in view of the above circumstances, and provides a whistle blowing kettle that can be easily manufactured even by a person with a weak force to insert and remove the lid, and the lid does not come off accidentally and is easy to manufacture. The purpose is to do.

[Means for Solving the Problems]

A whistle blowing kettle according to the present invention for achieving the above object has a cylindrical opening wall formed in an opening provided in an upper portion of a kettle body, and a lid which is fitted into and removed from the opening is covered with the opening from above. The knob is attached to the upper surface of the lid wall, and the lower surface of the lid wall is made of an elastic metal material and has an opening wall inner diameter.
A cylindrical wall with an outer diameter D2 slightly smaller than D1 is projected, a small protrusion is formed at one location on the outer peripheral surface of the cylindrical wall, and a tapered portion with a smaller outer diameter is provided at the bottom of the cylindrical wall, Wall inner diameter D1
And cylindrical wall outer diameter D2 and small protrusion projection height t are (D2 + t)> D1
It is characterized in that it is configured to be> D2.

In addition to the above structure, the base of the handle is fixed between the spout and the opening in the upper portion of the kettle body, and a projection protruding to the opening is provided at the base of the handle.

[Action]

In the whistle blowing kettle according to claim 1 of the present invention, when the lid is fitted in the opening of the kettle body, the small projection forming portion of the cylindrical wall is first fitted into the opening, and the small projection side and the opening. The taper portion side that faces the small protrusion is fitted with the contact point with the wall as the center of rotation, and the outer diameter of the taper portion is made smaller toward the bottom in the process of fitting the taper portion side. , At first, the taper part is fitted with almost no deformation, so at first, little force is applied, and as it is deeply fitted, the cylindrical wall above the taper part slightly elastically deforms and contacts the inner surface of the opening wall. Therefore, the force required for the fitting is slightly increased and the fitting is completed.

When removing the lid from the kettle body, the small projection side is still in contact with the inner surface of the opening wall, contrary to the fitting operation.
With the contact point as the center of rotation, the taper portion side facing the small protrusion is pulled up and removed, and then the small protrusion side is removed, but when pulling up the taper portion side, the taper portion Since the outer diameter of is narrower toward the bottom,
The cylindrical wall is elastically deformed only slightly and therefore can be removed with less force.

In the fitted state of the lid, the small projection and the cylindrical wall above the tapered portion provided on the opposite side elastically contact the inner surface of the opening wall to maintain the fitted state. .

Further, in the whistle-blowing kettle according to claim 2, the lid peripheral portion around the spout is pressed from above by the protrusion extending to the base of the handle, and the lid is detached from the portion even if the internal pressure rises at the time of boiling water. There is no such thing.

〔Example〕

Hereinafter, the whistle blowing kettle according to the present invention will be specifically described with reference to the drawings.

The kettle of the present invention comprises a kettle body 1 having a flat bottom surface and a substantially hemispherical shape, and a lid body 3 which is fitted into and removed from a circular opening 2 provided on the top thereof.

The kettle body 1 has a pouring port 22 projecting from the upper portion of a body wall 21 which is bent in a hemispherical shape upward, and an opening 2 into which a lid 3 is inserted and removed. Has been formed. A palate 23 with a built-in whistle at the tip of the spout 22
Is attached so that it can be opened and closed, the base of the handle 24 is screwed between the spout 22 and the opening 2, and the grip 25 of the handle 24 extends along the projecting curved surface above the main body wall 21. However, the upper part of the opening 2 is almost divided into two. The opening 2 has a cylindrical opening wall 4 having an inner diameter D1 integrally formed from the main body wall 21 toward the inside of the container, and the rim 26 is slightly wider.

The lid body 3 that closes the opening 2 is provided with a cylindrical wall 6 projecting on the lower surface side of the circular lid wall 5 which is slightly smaller than the lid wall 5, and a knob 9 is attached to an eccentric portion on the upper surface side of the lid wall 5. The lid wall 5 and the cylindrical wall 6 are integrally formed of a metal material having elasticity such as a stainless steel plate. The lid wall 5 is formed in such a size that it can be fitted into the rim 26 of the opening 2 from above, and is slightly recessed from the peripheral edge thereof to be continuous with the cylindrical wall 6. The outer diameter of the cylindrical wall 6
D2 is made slightly smaller than the inner diameter D1 of the opening wall 4, and two point-like small projecting portions 7 are provided in the outer circumferential surface at one location, usually near the mounting location of the knob 9, in the circumferential direction, and the projection thereof is provided. Height t is D2 + t
It is set so as to satisfy the relationship of> D1, and a tapered portion 8 having a smaller outer diameter is formed at the lower part of the cylindrical wall 6 as it goes downward. The two small projections 7, 7 may be a series of continuous stripes, and the taper portion 8 has a smaller outer diameter as it goes downward as shown in FIGS. 3 and 4. It may be curved or bent. Further, the knob 9 attached to the lid wall 5 at an eccentric position is provided with a hook-shaped bent portion 27 protruding in the outer peripheral direction on the upper portion for easy handling, and the bent portion 27 is connected in the tip direction of the handle grip portion 25. The lid body 3 can be attached to the kettle body 1 only when it further extends, and the handle grip portion 25 interferes with the lid grip portion 25 when the bent portion 27 is in another state, for example, when it protrudes to the side. The body 3 cannot completely close the opening 2.

The kettle of the present invention is constructed as described above. To fit the lid 3 into the opening 2 of the kettle body 1, the knob 9 is used.
From above the rear part of the kettle body 1 where the handle 24 does not get in the way, first fit the small protrusion 7 side of the lid 3 to the rear side of the opening 2, and the small protrusion 7 side is the inner surface of the opening wall 4. The contact point between the small protrusion 7 side and the opening wall 4, and
The opposite side of the lid body 3, that is, the taper portion 8 facing the small protrusion 7
Push the side into the opening 2 near the handle 24. Then, since the outer diameter of the taper portion 8 is narrowed downward, the user does not receive a large press-fitting resistance, and the upper portion of the cylindrical wall 6 on the taper portion 8 side facing the small protrusion is D2 + t = D1. It can be pushed in smoothly with a comparatively slight force that elastically deforms slightly. Further, in the fitted state, the small protrusion 7 and the cylindrical wall 6 above the taper portion 8 facing the small protrusion 7 elastically contact the inner surface of the opening wall 4, so that the boiling water is boiled in this state. In this case, an appropriate fitting holding force that cannot be disengaged with the vapor pressure of the whistle of the palate 23 can be obtained. To remove the lid body 3, contrary to the fitting operation, the taper portion 8 side of the lid body 3 facing the small projection portion 7 is first removed, and then the small projection portion 7 side is removed. Also in this case, if the taper portion 8 side facing the small projection portion 7 is raised with the contact point between the small projection portion 7 side and the opening wall 4 as the center of rotation, the taper portion 8 has a smaller outer diameter as it goes downward. Because there is
The contact force to the opening wall 4 is gradually reduced, and the lid body 3 can be easily removed without applying a large force.

FIG. 5 shows a second embodiment of the kettle of the present invention, which has a projection 28 projecting toward the opening 2 at the base of the handle 24 in addition to the above-described structure. In the fitted state of the lid body 3, the protrusion 28 contacts the peripheral portion of the lid wall 5 near the spout 22 from above and prevents the lid body 3 from coming off from that portion. Therefore, even if the fitting strength of the lid body 3 is slightly weak, the lid body does not come off by the vapor pressure of the whistle of the spout 22 and therefore the lid body 3 which can be fitted and removed easily can be used.

In order to fit the lid body 3, contrary to the above-described embodiment, the knob 9
Then, the peripheral edge of the lid wall 5 on the opposite side is fitted under the protrusion 28 from the rear, and then the small protrusion 7 side is pushed into the opening 2 while utilizing the elasticity of the cylindrical wall 6. When removing the lid 3,
First, hold the knob 9 and remove the side of the small protrusion 7 by pulling it up, and then slide the entire lid 3 rearward to remove it.

[Effect of device]

As described above, the whistle blowing kettle according to the present invention has a cylindrical opening wall formed in the opening provided in the upper portion of the kettle body, and the lid body fitted into and removed from the opening is covered with the lid wall from above. While attaching the handle to the upper surface of the lid wall, a cylindrical wall made of a metal material having elasticity and having an outer diameter D22 slightly smaller than the inner diameter D1 of the opening wall is projectingly provided on the lower surface side of the lid wall. A small protrusion is formed at one place, and a taper portion having a smaller outer diameter is provided at the lower part of the cylindrical wall. The inner diameter D1 of the opening wall, the outer diameter D2 of the cylindrical wall, and the protrusion height t of the small protrusion are (D2 + t )>D1>
Since it is configured to be D2, it has the following effects.

During the fitting and opening operations of the lid, with the small projection side of the lid fitted in the opening of the kettle body, the small projection of the lid with the contact point between the small projection side and the opening wall as the center of rotation. When the side of the taper that faces the section is fitted in or pulled out, a taper with a smaller outer diameter is provided at the location where the greatest resistance due to elastic deformation should be generated at that time, so when operating The resistance of the lid is remarkably reduced, and even a person with a weak force for fitting and opening the lid can perform it very easily.

Further, when the lid is fitted in the opening of the kettle body, the small protrusion and the cylindrical wall above the tapered portion facing the small protrusion elastically abut the inner surface of the opening wall. , It is possible to obtain an appropriate fitting holding force that does not come off unexpectedly during use.

Further, in the case of the kettle of the present invention, since the small protrusion is formed only at one place on the outer peripheral surface of the lid cylindrical wall, the small protrusion having a predetermined protrusion height can be formed easily with high accuracy. It is possible to easily and surely realize the above-mentioned fitting and opening operations and an appropriate fitting holding force.

In addition, in the whistle blowing kettle according to the second aspect, since the lid is pressed from above by the protrusion provided on the handle base near the spout, it is possible to use a lid that can be fitted and removed more easily. Is.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a whistle-blowing kettle according to the present invention, FIG. 2 is a bottom view of a lid, FIGS. 3 and 4 are vertical cross-sectional views of main portions of the lid, and FIG. Fig. 6 is a partially cutaway front view showing another embodiment of the kettle, and Fig. 6 is a longitudinal sectional view of a main part of a conventional whistle blowing kettle. DESCRIPTION OF SYMBOLS 1 ... Kettle main body, 2 ... Opening part, 3 ... Lid body, 4 ... Opening wall, 5 ... Lid wall, 6 ... Cylindrical wall, 7 ... Small projection part, 8 ... Taper part, 9 ... Pick, 22 ... Pouring, 24 ... Handle, 28 ... Protrusion, D1 ... Opening wall inner diameter, D2 ... Cylinder wall outer diameter, t ... Small projection protruding height

Claims (2)

[Scope of utility model registration request] 1. A lid body (3) having a cylindrical opening wall (4) having an inner diameter (D1) formed in an opening (2) provided in an upper portion of a kettle body (1), and fitting in and out of the opening (2). ), A knob (9) is attached to the upper surface of the lid wall (5) which covers the opening (2) from above, and the lower surface of the lid wall (5) is made of a metal material having elasticity and has an inner diameter of the opening wall. A cylindrical wall (6) having an outer diameter (D2) slightly smaller than (D1) is provided in a protruding manner, and a small protrusion (7) having a protruding height (t) is formed at one location on the outer peripheral surface of the cylindrical wall (6). The lower part of the cylindrical wall (6) is provided with a tapered part (8) whose outer diameter becomes smaller toward the lower side, and the inner diameter of the opening wall (D1) and the outer diameter of the cylindrical wall (D2)
And the small protrusion protrusion height (t) is (D2 + t)>D1> D2. 2. A base portion of a handle (24) is fixed between a spout (22) and an opening portion (2) of an upper portion of the kettle body (1), and an opening portion (at the base portion of the handle (24) ( The whistle-blowing kettle according to claim 1, characterized in that a projection (28) projecting toward 2) is provided.