JP2000316729A - Stainless bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To wash a stainless bottle as it is and to reduce its production cost in the stainless bottle having a double wall structure obtained by making a vacuum space between an inner container and an outer container and also having a bottom plate welded at the lower end of the trunk part of the outer container. SOLUTION: A bottom plate 12 is formed as an external body connected with the trunk part 11 of an outer container 2 and the rising part 12d of the periphery of the plate 12 is externally fitted to the lower end of the part 11 of the container 2 and welded at a position B on the upper end face of the part 12d. Thus, a part between plate surfaces where the plate 12 and the part 11 of the container 2 are closely fitted to each other is sealed at its outer end part to prevent water from entering this part between the plate surfaces. Since the container 2 is constituted by a structure without the water infiltrating gap, without additionally providing a conventional cover, or the like, which covers a welding part like this, a stainless bottle is made more inexpensive and can be washed as it is.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stainless steel bottle provided with a stainless steel inner container and an outer container, wherein a vacuum insulation space is formed between the two containers.

[0002]

2. Description of the Related Art A stainless steel bottle as described above is shown in FIG.
As shown in (a), the container body 50 is formed by an inner container 51 and an outer container 52 each made of a stainless steel plate. The inner container 51 has an inner cylinder body 54 formed with a base portion 54a to which the inner plug 53 is attached at the upper end side and extending downward, and the inner cylinder body 54 so as to close the bottom side of the inner cylinder body 54. A bottom surface portion 5 integrally provided at the lower end of 54
5 is formed in a bottomed cylindrical shape.

The outer container 52 includes an outer cylinder body 56 having an upper end joined to the base 54a and extending downward outside the inner cylinder body 54, and a bottom plate 57 for closing a lower end opening of the outer cylinder body 56. Are formed. The container main body 50 is formed by using a sealed space 58 between the inner container 51 and the outer container 52 as a vacuum heat insulating space. A sealing portion 59 is provided at the center of the bottom plate 57, and an exhaust hole for evacuating the space 58 is formed in the sealing portion 59. Further, a sealing material made of, for example, low-melting glass for sealing the exhaust hole after evacuation is attached to the sealing portion 59. Furthermore, on the inner surface of the bottom plate 57,
A getter member 60 having a gas adsorption function is attached.

[0004] On the other hand, on the outer peripheral edge of the bottom plate 57, FIG.
As shown in FIG. 7, a cylindrical overlapping portion 57a extending downward is formed. The overlapped portion 57a is fitted inside the outer cylinder body portion 56 and overlapped, and the bottom plate 5
7 is joined to the lower end of the outer cylinder body 56 by welding.

In the above-described structure, the overlapping area of the overlapping portion 57a and the outer cylinder body 56 has a downwardly projecting shape on the bottom of the container, which impairs the appearance and handleability. A bottom cover 61 that covers the entire bottom plate 57 from below is further provided as an exterior body on the bottom side of the container body 50. The bottom cover 61 is assembled to the container body 50 by press-fitting the lower end side of the outer cylinder body portion 56 into an upwardly rising cylindrical portion 61a formed on the peripheral edge of the bottom cover 61. I have. This allows
The appearance is improved by using a structure that does not expose the overlapping region to the outside.

[0006]

However, in the above-described conventional stainless steel bottle, since the bottom cover 61 for covering the bottom plate 57 from below is provided, the number of parts and the number of manufacturing steps are increased, and the manufacturing cost is high. Problem.

Further, the bottom cover 61 is provided with an outer cylinder body 56.
Because the lower end side is press-fitted and assembled, if you try to wash it completely, water will enter between the plate surfaces of the press-fitted portion and stay there, making it easy for even stainless steel to corrode For this reason, the conventional stainless steel bottle having the above configuration also has a problem that it cannot be washed as a whole.

The present invention has been made in view of the above problems, and has as its object to provide a stainless steel bottle capable of reducing the overall manufacturing cost and capable of being washed in a whole. It is in.

[0009]

Accordingly, a stainless steel bottle according to the present invention comprises a container body having a double-walled structure in which a vacuum is applied between the inner container and the outer container, and the inner container is provided on the body of the outer container. A stainless steel bottle formed by joining a bottom plate having a sealing portion that is sealed after evacuating the outer container and the outer container, wherein the bottom plate is formed as an exterior body connected to the body of the outer container, and the outer container is formed. The body and bottom plate of these outer containers are joined at the position of the end surface on the side exposed to the outside between the body end surface and the bottom plate end surface.

[0010] According to this configuration, the bottom plate is formed as an exterior body without being covered by a member such as a conventional bottom cover, and the bottom plate and the body of the outer container are on the side exposed to the outside. By being joined at the position of the end surface, the outer surface of the bottom plate and the body of the outer container are sealed at the outer end between the plate surfaces that are in close contact with each other in this joint region. Therefore,
Water does not enter between the plate surfaces from outside.

As described above, in the above, the outer container is formed without providing a bottom cover for covering the joining region between the outer container and the bottom plate, and without any gap for water to enter from the outside. In addition, the manufacturing cost can be reduced, and the stainless steel bottle can be provided as a washable whole bottle.

[0012] In the stainless steel bottle according to the present invention, a bottom space region having a space or a space wider than a body space between the inner container and the outer container is formed between the bottom of the inner container and the outer container; It is characterized in that the body of the outer container and the bottom plate are joined in the bottom space region.

According to this configuration, if a joint failure occurs, for example, when joining by welding, the body of the outer container is cut at a position corresponding to the bottom space region above the joint position at this time. By doing so, even if the interval between the body portions of the inner and outer containers is narrow, only the body portion of the outer container can be cut from the outside without damaging the body portion of the inner container. Then, by welding a new bottom plate to the lower end thereof, it becomes possible to perform a regeneration process in which the inner container and the body of the outer container are reused, and therefore, the joining position between the body of the outer container and the bottom plate is set as described above. With such a setting, the overall manufacturing cost can be further reduced.

According to a third aspect of the present invention, in the stainless steel bottle, a substantially vertical straight portion is provided over at least a portion of the body portion of the outer container corresponding to the bottom space region above the joint portion. Features.

According to this configuration, when the body of the outer container is cut during the above-described regenerating process, the cutting position may be slightly shifted up and down, but may be within the range of the straight portion. There is no difference in caliber. For this reason, for example, it is possible to perform the regenerating process using the bottom plate having the same shape as the bottom plate used at the time of occurrence of the defect. Therefore, the above-described cutting operation can be easily performed, and since it is not necessary to separately manufacture bottom plates having different diameters exclusively for reproduction, this also makes the overall manufacturing cost lower. can do.

A stainless steel bottle according to a fourth aspect of the present invention is characterized in that a cover sheet for covering the sealing portion from outside is attached to the bottom plate.

As described above, the appearance is improved by attaching the cover sheet covering the sealing portion of the bottom plate, and the sealing material attached to the sealing portion can be protected from external impact. it can.

[0018] The stainless steel bottle according to claim 5 is characterized in that the cover sheet is provided with a display portion on which a serial number and a product number are described.

As described above, by using the cover sheet described above and providing a display portion on which the serial number and the product number are described, a special nameplate or the like for displaying such a display can also be provided. Need not be separately formed and attached, so that the overall manufacturing cost is lower.

In the stainless steel bottle according to the present invention, the peripheral edge of the bottom plate is bent upward to form a peripheral rising portion, and the upper end of the peripheral rising portion is fitted to the lower end of the body of the outer container. The body and the bottom plate of the outer container are joined at the position of the end surface on the side exposed to the outside between the end surface of the peripheral rising portion and the body end surface of the outer container.

According to this configuration, the joining operation such as welding is performed in a state where the body of the outer container and the peripheral edge rising portion of the bottom plate are fitted and held with each other. Therefore, in this case, the positioning of the two during the joining operation is facilitated by the fitting structure as described above, thereby improving the workability. In addition, since the failure rate can be reduced by performing the stable joining operation, the overall manufacturing cost can be further reduced.

In the stainless steel bottle according to the present invention, a downward step is formed at the lower end of the body of the outer container by the thickness of the peripheral rising portion of the bottom plate, and the peripheral rising is formed below the step. It is characterized in that the upper end side of the portion is fitted to the outside, and the body portion of the outer container and the bottom plate are joined at the position where the upper end surface of the peripheral rising portion and the step portion abut against each other.

In this configuration, there is no step between the outer surface of the peripheral rising portion of the bottom plate and the outer peripheral surface of the body of the outer container above the bottom plate, so that the appearance is improved, In addition, since the fingertips do not get caught in the washing, the washing ability is improved. Further, the step portion as described above is formed as a surface in a direction intersecting the upper and lower tubular plate surfaces sandwiching the step portion. This also has a function as a rib for the cylindrical plate surface as described above, so that the strength of the joining region is improved. The stainless steel bottle of claim 8 is
The surface of the outer container including the joint region between the body and the bottom plate of the outer container is subjected to a surface roughening treatment to form a coating film.

As described above, when the appearance is improved by forming a coating film on the surface of the outer container, the adhesion of the coating film is improved by performing the surface roughening treatment on the surface of the outer container. In addition, since peeling of the coating film during round washing is suppressed, good appearance can be maintained for a long period of time.

[0025]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1A shows an overall configuration of a stainless steel bottle according to the present embodiment. The stainless steel bottle includes a container body 3 composed of an inner container 1 and an outer container 2 each made of a stainless steel plate, and a synthetic resin inner plug 4 removably attached to the upper end of the container body 3. , And a cup-shaped lid 5 that covers the inner plug 4.

The inner container 1 has an inner cylinder body 6 extending in the vertical direction.
And an inner cylinder bottom plate 7 welded to cover the lower end opening of the inner cylinder body 6. The inner cylinder body 6
An inner cylinder base 6a is provided on the upper end side.
a narrow portion 6b smaller in diameter than the base portion 6a
A curved portion 6c extending radially outward, and an inner cylindrical base portion 6a.
It is formed in a shape in which a cylindrical portion 6d having a larger diameter is sequentially connected. A curved portion 6c and a cylindrical portion 6d;
The space surrounded by the inner cylinder bottom plate 7 closing the lower end opening of d is formed as a storage space 8 for a liquid such as tea or drinking water.

The inner cylinder base 6a is provided with the inner plug 4
Is formed with a female screw portion 6e to which the. Inner plug 4
Is a cap body 4 tiltably attached to the upper end side thereof.
a, the lid 5 is removed, and the cap body 4a is rotated clockwise around the pivot 4b in the figure, whereby the liquid injection channel 4c covered with the cap body 4a is removed. Communicate outward. At the same time, the cap body 4
a of the valve element 4d disposed therebelow with the rotation of
Is pushed down, whereby the outer peripheral side of the valve element 4d separates from the seal packing 4e, and the liquid injection flow path 4c
Communicates with the storage space 8. By tilting the container body 3 in this state, the content liquid stored in the storage space 8 can be discharged to the outside through the liquid injection channel 4c.

The outer container 2 is substantially the same as the inner container 1,
It is formed by an outer cylinder body 11 extending in the vertical direction, and a bottom plate (hereinafter, referred to as an outer cylinder bottom plate) 12 joined to cover the lower end opening of the outer cylinder body 11. Outer cylinder body 11
Is provided with an outer cylinder base 11a on the upper end side thereof, and the outer cylinder base 11a has a reduced diameter portion at the upper end thereof into which the upper end of the inner cylinder base 6a is fitted. It is welded to the inner container 1. At the lower end of the outer cylinder base 11a, a shoulder 11b inclined in a divergent shape and a cylindrical part 11c extending downward are sequentially connected to form the outer cylinder body 1
1 is formed. A male screw 11d is formed at the lower end of the outer cylinder base 11a.
The lid 5 is screwed to 1d. At this time, the lower end surface of the lid 5 is in contact with the shoulder 11b, and the outer peripheral surfaces of the lid 5 and the cylindrical portion 11c are held substantially flush.

An outer cylinder bottom plate 12 is welded so as to cover the lower end opening of the outer cylinder body 11 having the above-described shape, as described later. As shown in FIG.
At the center thereof, a small-diameter cylindrical portion (sealing portion) 12a having a shape recessed upward is provided, and an exhaust hole 12b is formed at an upper end surface of the small-diameter cylindrical portion 12a. This exhaust hole 12b
Through the process, a process of setting the space 13 between the inner container 1 and the outer container 2 as a vacuum heat insulating space is performed. This processing is performed by turning the container body 3 upside down and placing a sealing material 14 made of, for example, low-melting glass on the small-diameter cylindrical portion 12a, and sending the container body 3 into a vacuum chamber (not shown) in this state. This allows the space 13 to pass through the exhaust hole 12b.
The air inside is sucked out, and in this state, the whole is heated to melt the sealing material 14, so that the exhaust holes 12
b is sealed. Thus, the space 13 is formed as a vacuum insulation space.

A getter member 15 having a gas adsorption function is fixed on the outer cylinder bottom plate 12 by a mounting bracket 16. After the space 13 is evacuated and sealed, outgas generated from the inner surface of the space is adsorbed by the getter member 15, so that the inside of the space 13 is maintained at a desired degree of vacuum. In the figure, reference numeral 17 denotes a fixing bracket for preventing the sealing member 14 from dropping off, and reference numeral 18 denotes a synthetic resin attached to the outer cylinder bottom plate 12 so as to cover the sealing member 14 and the fixing bracket 17. It is a cover sheet made of. Although not shown, the cover sheet 18 is provided on its lower surface with a display section formed by printing or engraving a serial number, a product number, or the like.

Next, the lower end of the outer cylinder body 11 described above,
The structure of welding the outer cylinder bottom plate 12 to the peripheral side will be described.

As shown in FIG. 3B, the lower end of the outer cylinder body 11 has a length such that the cylindrical portion 11c extends below the lower end position of the inner cylinder body 6. At the lower end of the cylindrical portion 11c, a downward step 11e inclined in the diameter decreasing direction, a reduced diameter tube portion 11f extending downward from the inner end of the step portion 11e, and an inward direction from the lower end of the reduced diameter tube portion 11f. It is formed in a shape in which the leading end tapered portion 11g is successively connected. On the other hand, the outer cylinder bottom plate 12 has a shape that bends upward via a curved portion 12c having an arc-shaped cross section, and a cylindrical peripheral rising portion 12d is integrally formed on the peripheral edge.

In welding the outer cylinder body 11 and the outer cylinder bottom plate 12 formed as described above to each other, first, the lower end of the outer cylinder body 11 is attached to the peripheral edge rising portion 12 of the outer cylinder bottom plate 12.
d into the peripheral edge rising portion 12
d is held in a state in which the upper end surface thereof is in contact with the step 11e of the outer cylinder body 11. As a result, the outer cylinder bottom plate 12 is in an assembled state in which the peripheral rising portion 12d is externally fitted to the reduced-diameter cylindrical portion 11f. In this state, the position B of the upper end surface of the peripheral rising portion 12d is set.
Along the entire circumference by, for example, laser welding. Thereby, the peripheral edge rising portion 12d of the outer cylinder bottom plate 12
Are hermetically joined to the lower end of the outer cylinder body 11 to form the outer container 2.

It should be noted that, in this state of being joined to each other, the peripheral rising portion 12d of the outer cylinder bottom plate 12 and the outer cylinder body 11
The cylindrical portion 11c and the reduced-diameter cylindrical portion 11f with the step portion 11e interposed therebetween so that the outer peripheral surfaces of the cylindrical portion 11c and the cylindrical portion 11c are flush with each other.
Is set in accordance with the thickness dimension of the outer cylinder bottom plate 12. After welding as described above, the cylindrical portion 11c of the outer cylinder body 11 and the peripheral rising portion 1 of the outer cylinder bottom plate 12 are formed.
Each outer surface of 2d is subjected to a surface roughening process including blasting, buffing, and thermal spraying, including a welding area, and then a coating of an appropriate color is applied to form a coating film. Thus, this stainless bottle is formed.

Next, a description will be given of a regeneration process when welding failure occurs in the process of manufacturing the stainless steel bottle having the above configuration.

As described above, when it is detected that a vacuum leak has occurred due to poor welding at the welded portion between the lower end of the outer cylinder body 11 and the peripheral edge of the outer cylinder bottom plate 12, etc.
As shown in (a), a height position C between the welding point B and the lower end position of the inner cylinder body 6 of the inner container 1, for example, the welding point B
The outer cylinder body 11 is cut at a height of 2 mm upward from above.

In this embodiment, the inner cylinder bottom plate 7 is formed in a convex shape such that the center side thereof is located higher than the peripheral edge side, and this is welded to the lower end of the inner cylinder body 6. A bottom space region W2 wider than the interval W1 between the body portions 6 and 11 between the inner container 1 and the outer container 2 is formed between the bottom of the formed inner container 1 and the outer container 2. Since the initial welding position is set at a position corresponding to this region W2, the above-described cutting at the time of occurrence of poor welding is performed by narrowing the interval W1 between the body portions 6 and 11 of the inner and outer containers 1 and 2. Even in this case, it is possible to easily perform only the outer cylinder body 11 from the outside without damaging the inner container 1.

Further, the outer cylinder body 11 has a height region Δ above the above-mentioned welding portion B corresponding to the bottom space region W2.
In the range of H, it is formed as a substantially vertical straight portion 11q over the entire circumference. Therefore, when the outer cylinder body 11 is cut as described above, even if the cutting position is slightly displaced up and down, there is no difference in the caliber within the range of the straight portion 11q. .

Then, as shown in FIG. 3B, the outer cylinder bottom plate 12 having the same shape as the bottom plate at the time of occurrence of a defect is used to remove the upper end surface of the peripheral edge rising portion 12d of the new outer cylinder bottom plate. By butt-welding to the lower end of the cylinder body 11, the outer cylinder body 11 and the inner container 1 can be reused to form a stainless steel bottle and perform a so-called regeneration process. As a result, the cutting operation as described above can be easily performed, and since there is no need to separately manufacture a bottom plate or the like having a different diameter only for reproduction, the overall manufacturing cost is reduced. be able to.

In the configuration in which the above-described regenerating process is performed when a welding defect occurs, in the regenerated shape, the dimension h between the inner cylinder bottom plate 7 and the outer cylinder bottom plate 12 is set to a predetermined size or more, and the desired heat insulation is achieved. Space needs to be secured,
For this reason, in the initial structure shown in FIG. 9A, the dimension between the inner cylinder bottom plate 7 and the outer cylinder bottom plate 12 is set to the above-mentioned dimension h and the dimension in consideration of the cut-off dimension α in the case of poor welding. It is necessary to keep. For this reason, the overall compactness is impaired, and a difference in height occurs between a stainless steel bottle in which no welding failure has occurred and a stainless steel bottle which has been once reproduced in which welding failure has occurred.

Therefore, in order to prevent such a problem from occurring, as shown in FIG. 3 (b), an outer cylinder bottom plate 12 'dedicated for reproduction is prepared separately, and the reproduction process is performed. Is also possible. That is, the outer cylinder bottom plate 12 ′
The height H2 of the peripheral rising portion 12d 'is larger than the height H1 of the peripheral rising portion 12d of the outer cylinder bottom plate 12 joined at the time of occurrence of poor welding shown in FIG. The height is increased by about 2 mm in consideration of the cut size. The outer cylinder bottom plate 12 'is welded to the lower end of the outer cylinder body 11 cut in the same manner as described above.

In this way, by preparing the outer cylinder bottom plate 12 'for regeneration processing separately when a welding defect occurs, as shown in FIG. The dimension between the cylinder bottom plate 12 and the bottom plate 12 does not need to be set to an excessively large value. Therefore, the size can be further reduced.
It can be finished as a product of almost the same shape. In addition, as such an outer cylinder bottom plate 12 ′ dedicated to such a regeneration process,
In the case of re-welding, instead of the butt welding as described above, for example, the diameter at the upper end side of the peripheral rising portion 12d 'is formed to a size that can be fitted inside the lower end side of the outer cylinder body portion 11, As such a fitting structure, it is also possible to perform welding at this time at the position of the lower end surface of the outer cylinder body 11.

As described above, the stainless steel bottle according to the present embodiment has the outer cylinder bottom plate 12 formed as an exterior body connected to the outer cylinder body 11, and the outer diameter of the reduced diameter cylinder 11f at the lower end of the outer cylinder body 11 is reduced. The inner peripheral portion 12d of the cylindrical bottom plate 12 is fitted inside and welded at the position of the upper end surface of the peripheral edge rising portion 12d.

That is, the welding area of the outer cylinder body 11 and the outer cylinder bottom plate 12 is not covered with a member such as a conventional bottom cover, but is welded at a portion exposed as the outer wall of the container. In addition, the outer cylinder body 1 fitted to each other as described above.
1 and a peripheral rising portion 12 of the outer cylinder bottom plate 12
Since the welding is performed at the position of the end face of the outer peripheral edge rising portion 12d on the outer side of d, water does not enter between these fitting surfaces from outside.

Thus, the above stainless steel bottle is
Since the outer container 2 is formed without a bottom cover that covers the welding region between the outer cylinder body 11 and the outer cylinder bottom plate 12 and without any gap that allows water to enter from outside, the manufacturing cost is reduced. Can be made more inexpensive and can be made a stainless steel bottle that can be washed whole.

Further, in the above description, the outer cylinder body 11 and the outer cylinder bottom plate 12 are formed below the lower end of the inner cylinder body 6, so that even if welding failure occurs, as described above, By cutting the lower end of the outer cylinder body 11 and welding a new outer cylinder bottom plate 12 without damaging the body 6 of the inner container 1, the inner container 1 and the outer cylinder body 11 Can be reused, which also makes it possible to lower the overall production costs.

Further, in the above embodiment, the peripheral rising portion 12d of the outer cylinder bottom plate 12 is fitted to the reduced-diameter cylindrical portion 11f of the outer cylinder body 11, and in this case, both are fixed at the time of welding. The holding in the state of being positioned at the relative position is facilitated by the fitting structure as described above. As a result,
Since the welding operation is facilitated, stable welding can be performed, and the occurrence rate of defective welding can be reduced, so that the overall manufacturing cost can be further reduced.

In the above description, the lower end of the outer cylinder body 11 is
An inward step 11e is formed, and this step 1
Since 1e also functions as a rib surface on the lower end side of the outer cylinder body 11, the strength of the welding area is improved. Further, in the above embodiment, the shape of the step portion 11e is set so that the outer surface of the peripheral rising portion 12d of the outer cylinder bottom plate 12 is substantially flush with the cylindrical portion 11c of the outer cylinder body portion 11, so that Performance is improved,
Further, since the fingertips do not get caught in the washing, the washing property is improved.

On the other hand, in the above, the cover sheet 1 covering the small-diameter cylindrical portion 12a at the center of the outer cylinder bottom plate 12 and the fixing bracket 17 is provided.
The appearance is improved by attaching 8 and
The sealing material 14 made of low-melting glass attached to the small-diameter cylindrical portion 12a can be protected from external impact. Further, the stainless steel bottle is provided with an outer container 1 including a welding area.
Surface is subjected to a roughening treatment to form a coating film, so that the adhesion of the coating film is improved, and thereby, the peeling of the coating film during round washing is suppressed, so that a good appearance is obtained. Can be maintained for a long time.

Although the specific embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, in the above-described embodiment, a peripheral edge rising portion 12d bent upward is provided on the outer peripheral side of the outer cylinder bottom plate 12, while the lower end of the outer cylinder body 11 is provided with a downwardly facing stepped portion 11e.
And the reduced-diameter cylindrical portion 11 fitted inside the peripheral edge rising portion 12d.
The example in which the shape is formed by f is described.
In the range of 6, for example, the configurations shown in FIGS. 4A to 4E can be adopted.

That is, in the configuration shown in FIG. 1A, a step 11h is formed on the lower end of the outer cylinder body 11 so as to extend outward, and the diameter-enlarging cylinder extending downward from the outer end of the step 11h. A peripheral rising portion 12d of the outer cylinder bottom plate 12 is fitted inside the portion 11i, and the outer cylinder bottom plate 12 and the outer cylinder body portion 11 are mutually welded at a position B on the lower end surface of the enlarged diameter cylinder portion 11i.

Further, in the configuration shown in FIG.
The lower end of the outer cylinder bottom plate 12 is formed in a straight shape without the above-mentioned stepped portion or the like. Position B
Welded in. In the configuration shown in FIG.
1, the lower end side is formed in a substantially straight shape in the same manner as described above, and this is fitted inside the peripheral rising portion 12d in the opposite manner, and is welded at the position B of the upper end surface of the peripheral rising portion 12d. . Further, in the configuration shown in FIG.
2 and the lower end of the outer cylinder bottom plate 12 are formed with curved portions 11j and 12e having an arcuate cross section, respectively, and the end face of the curved portion 12e of the outer cylinder bottom plate 12 located on the outer side. Is welded at the position B.

Further, in the configuration shown in FIG.
The lower end of the outer cylinder 1 is formed in a straight shape, while a cylindrical portion 12f extending downward is formed on the peripheral edge of the outer cylinder bottom plate 12, and the cylindrical portion 12f is formed to fit inside the outer cylinder body 11. In this case, the end surfaces of both the outer cylinder body 11 and the cylinder 12f are exposed to the outside, and are welded at the positions B of these end surfaces.

As described above, by providing the cylindrical portions which are fitted concentrically on the lower end side of the outer cylinder body 11 and the peripheral edge of the outer cylinder bottom plate 12, positioning and holding during welding are facilitated. Workability is improved, and a stable joining state can be obtained.

Further, as shown in FIGS. 5 (a) to 5 (c), the radius of the outer cylinder body 11 and the peripheral edge of the outer cylinder bottom plate 12 are respectively different from those of the first to fifth embodiments. It is also possible to provide a mating surface extending in the direction, and to weld each other at these peripheral end portions. That is, in the figure (a), a flange-shaped portion 11k that expands radially outward is provided at the lower end side of the outer cylinder body portion 11, and this flange-shaped portion 11k is
The outer cylinder bottom plate 12 is overlaid on the flat outer peripheral edge side and welded along the position B of each peripheral end face.

In FIG. 5B, in addition to a structure in which a flange 11k similar to the above is provided at the lower end of the outer cylinder body 11 and welded along the position B of each peripheral end face, the outer cylinder bottom plate 12 On the peripheral side,
A step surface portion 12g that is fitted inside the outer cylinder body 11 is formed. Thus, the lower end of the outer cylinder body 11 and the outer cylinder bottom plate 12
By forming a cylindrical portion that fits concentrically with the peripheral side of
As described above, positioning and holding during welding are facilitated, and a stable welding state can be obtained.

FIG. 5C shows a structure in which the lower end side of the outer cylinder body 11 is bent inward in the radial direction and overlapped on the peripheral side of the outer cylinder bottom plate 12. The lower end corner of 11 is formed as a curved portion 11m having an arc-shaped cross section by rolling, and an outer cylinder bottom plate 12 is provided inside the curved portion 11m.
A flat portion 11n overlapping the peripheral side of is formed. By providing the curved portion 11m as described above and making the corners round, the touch is improved and the handleability is improved.
In addition, by adopting a shape in which the outer cylinder bottom plate 12 is fitted into the inner peripheral surface of the curved portion 11m, positioning and holding during welding becomes easy, and a stable welding state can be obtained.

Further, as shown in FIG. 4D, the lower end of the outer cylinder body 11 is formed so as to be substantially orthogonal to the peripheral edge of the outer cylinder bottom plate 12, and the lower end of the outer cylinder trunk 11 is It is also possible to adopt a configuration in which respective mating surfaces that are in close contact with the upper surface of the outer cylinder bottom plate 11 are welded at a portion B that communicates outward.

On the other hand, in the above embodiment, the inner container 1
However, as an example, a stainless steel bottle formed by welding an inner cylinder bottom plate 7 to a lower end of an inner cylinder body 6 has been described, for example, as shown in FIG. It is also possible to apply the present invention to a stainless steel bottle configured by providing an inner container 1 having a shape integrally connected to the inner container. In this manner, even in the case where the bottom surface portion 6 a is gently curved and connected to the lower end of the inner cylinder body 6, the height position of the welding area between the lower end side of the outer cylinder body 11 and the peripheral edge of the outer cylinder bottom plate 12. About the outer cylinder body 11 on the bottom side of the outer container 2 and the inner container 1.
By setting the height position corresponding to a region where the interval W3 is wider than the interval W1 between the inner cylinder body 6 and the inner cylinder body 6, it is possible to easily cut the outer cylinder body 11 at the time of poor welding. Regeneration can be performed as described above.

In the above description, a stainless steel bottle formed by welding the bottom plate 12 to the outer cylinder body 11 by welding has been described as an example, but the bottom plate 12 is attached to the outer cylinder body 11 by brazing instead of welding. It is also possible to adopt a configuration of joining.

[0061]

As described above, in the stainless steel bottle according to the first aspect of the present invention, the bottom plate is formed as an exterior body connected to the body of the outer container. It is joined at the position of the end face on the side exposed to the outside. Therefore, without separately providing a bottom cover that covers the joining region between the outer cylinder body and the outer cylinder bottom plate, and since the outer container is formed with a structure having no gap such that water enters from the outside, Production costs are lower and
It becomes possible to make a stainless steel bottle that can be washed whole.

In the stainless steel bottle according to the second aspect,
The body and the bottom plate of the outer container are joined to each other between the bottom of the inner container and the outer container in a region wider than the interval between the body portions of the inner container and the outer container. By this, even if a welding defect occurs, the lower end of the outer cylinder body is cut and the new outer cylinder bottom plate is welded without damaging the body of the inner vessel. And the outer cylinder body can be reused, so that the overall manufacturing costs can also be reduced.

In the stainless steel bottle according to the third aspect,
A substantially vertical straight portion is provided over the entire circumference at least at a position corresponding to the bottom space region above the joining portion in the body portion of the outer container. As a result, there is no difference in diameter even after the body portion of the outer container is cut as described above, so that, for example, even after a defect occurs, it is possible to join the bottom plate having the same shape as the original one. Therefore, the above-described cutting operation is facilitated, and it is not necessary to separately manufacture bottom plates having different diameters exclusively for reproduction, thereby making it possible to further reduce the overall manufacturing cost. .

In the stainless steel bottle according to the fourth aspect,
Since a cover sheet that covers the sealing portion from the outside is attached to the bottom plate, the appearance is improved, and the sealing material attached to the sealing portion can be protected from external impact.

In the stainless steel bottle according to the fifth aspect,
Since the cover sheet is provided with a display portion on which the serial number and the product number are described, it is not necessary to separately form and attach a special nameplate or the like for displaying such a number. Production costs can be lower.

In the stainless steel bottle according to the sixth aspect,
A configuration in which the peripheral edge rising portion of the bottom plate is fitted to the lower end side of the body portion of the outer container and the end face portion is welded. In this case, both are positioned at a predetermined relative position during welding work such as welding. Holding is facilitated by the fitting structure as described above.
As a result, work becomes easy, and stable joining can be performed, and the incidence of defects can be reduced.
This also allows the overall manufacturing cost to be lower.

In the stainless steel bottle according to claim 7,
A lower step is formed at the lower end of the body of the outer container for the thickness of the peripheral rising portion of the bottom plate, and the upper end of the peripheral rising portion is externally fitted to and joined to this step. The outer peripheral surface of the bottom plate and the outer peripheral surface of the trunk of the outer container are flush with each other, so that the appearance is improved, and the washability is improved. Further, since the step portion as described above also functions as a rib surface, the strength of the bonding region is improved.

In the stainless steel bottle according to the eighth aspect,
When a coating is formed on the surface of the outer container including the above-described bonding region, the surface is subjected to a roughening treatment, so that the adhesion of the coating is improved, and thereby, the coating may be peeled off during the round washing. Because it is suppressed, good appearance can be maintained for a long period of time.

[Brief description of the drawings]

FIG. 1 shows a stainless steel bottle according to an embodiment of the present invention. FIG.
FIG. 2B is an enlarged sectional view of a portion A in FIG.

FIGS. 2A and 2B show a procedure of a regeneration process when a welding defect occurs in the stainless steel bottle, wherein FIG. 2A is a sectional view of a main part showing a cut portion after the occurrence of a welding defect, and FIG. It is principal part sectional drawing which shows a reproduction state.

3A and 3B show another regeneration processing procedure when a welding defect occurs. FIG. 3A is a cross-sectional view of a main part showing a cut portion after the occurrence of a welding defect, and FIG. 3B is a reproduction state after the cutting. It is principal part sectional drawing which shows.

4 (a) to 4 (e) are cross-sectional views of main parts showing other shapes of welded portions of the outer cylinder body and the outer cylinder bottom plate in the stainless steel bottle.

5 (a) to 5 (d) are cross-sectional views of main parts showing still another welded shape between the outer cylinder body and the outer cylinder bottom plate in the stainless steel bottle.

FIG. 6 is a sectional view of a main part of a stainless steel bottle according to another embodiment of the present invention.

7A and 7B show a conventional stainless steel bottle, wherein FIG. 7A is a half sectional view showing the entire structure, and FIG. 7B is an enlarged sectional view of a portion D in FIG. 7A.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner container 2 Outer container 6 Inner cylinder body 7 Inner cylinder bottom plate 11 Outer cylinder body 11c Cylindrical part 11e Step part 11q Straight part 12 Outer cylinder bottom plate 12a Small diameter cylindrical part (sealing part) 12d Peripheral edge rising part 18 Cover sheet

Claims (8)

[Claims] 1. A container body having a double-walled structure in which a vacuum is applied between an inner container and an outer container, and the body of the outer container is sealed after evacuating the space between the inner container and the outer container. A stainless steel bottle formed by joining a bottom plate having a sealing portion to be formed, wherein the bottom plate is formed as an exterior body connected to the body of the outer container, and is exposed to the outside at the body end surface and the bottom plate end surface of the outer container. A stainless steel bottle wherein the body of the outer container and the bottom plate are joined at the position of the end face on the side. 2. A bottom space region having a space or a space wider than each body space between the inner container and the outer container is formed between the bottom portion of the inner container and the outer container. 2. The stainless steel bottle according to claim 1, wherein the body of the outer container and the bottom plate are joined. 3. The body of the outer container has at least a portion above the joint and corresponding to the bottom space region,
3. The stainless steel bottle according to claim 2, wherein a substantially vertical straight portion is provided over the entire circumference. 4. A cover sheet for covering a sealing portion from outside is attached to said bottom plate.
Or 3 stainless steel bottles. 5. The stainless steel bottle according to claim 4, wherein the cover sheet is provided with a display portion on which a serial number or a product number is described. 6. A peripheral edge rising portion is formed by bending a peripheral edge of the bottom plate upward, and an upper end side of the peripheral edge rising portion is fitted to a lower end side of a body portion of the outer container. The body part of the outer container and the bottom plate are joined at the position of the end face on the side exposed to the outside between the end face of the outer part and the body part end face of the outer container. Stainless steel bottle as described in. 7. A lower step is formed at the lower end of the body of the outer container by the thickness of the peripheral rising portion of the bottom plate, and the upper end of the peripheral rising portion is formed below the step. 7. The stainless steel bottle according to claim 6, wherein the body portion of the outer container and the bottom plate are joined at a position where the upper end surface of the peripheral rising portion and the step portion abut against each other. 8. The coating film according to claim 1, wherein the surface of the outer container including the joint region between the body and the bottom plate of the outer container is subjected to a surface roughening treatment to form a coating film. Stainless steel bottle described in Crab.