U.S. patent application number 09/947860 was filed with the patent office on 2002-03-28 for cap body of beverage container.
This patent application is currently assigned to Nippon Sanso Corporation. Invention is credited to Kowa, Yasuhiro, Kunio, Hatsumoto, Miura, Ikuo, Ohuo, Takashi.
Application Number | 20020036207 09/947860 |
Document ID | / |
Family ID | 26600834 |
Filed Date | 2002-03-28 |
United States Patent
Application |
20020036207 |
Kind Code |
A1 |
Ohuo, Takashi ; et
al. |
March 28, 2002 |
Cap body of beverage container
Abstract
There is provided a cap body of a beverage container where a
large amount of beverage in a container body doesn't flow out, and
a lid member is not vigorously released even if hot beverage is put
in the container, and where a degree of freedom to select a spring
is improved by alleviating impact force in an opening operation,
the cap body of the beverage container comprising: a
cylindrically-shaped drinking mouth member releasably provided in a
mouth portion of a container body; a lid member connected to the
drinking mouth member via a hinge axis; a spring for urging the lid
member to the opening direction; and a lock member provided in a
position against the hinge axis of the drinking mouth member for
maintaining the lid member in a closing state, wherein the drinking
mouth member comprises a drinking mouth formed in the lock member
side of a peripheral wall of the upper opening; a bottom wall where
hinge axis side is made higher than the drinking mouth side; a
liquid hole formed in the drinking mouth side and an air hole
formed in a hinge axis side on a connection line between the hinge
axis side and the lock member side, and the lid member comprises an
inner cap provided with a seal member for sealing the liquid hole
and the air hole, and furthermore, a shoulder member provided in
the container body is connected to the lid member and the hinge
axis, and the hinge axis supporting portion of the shoulder member
is provided with a protrusion portion to which the lid member
slidably contacts in an opening operation of the lid member.
Inventors: |
Ohuo, Takashi; (Tokyo,
JP) ; Kowa, Yasuhiro; (Tokyo, JP) ; Kunio,
Hatsumoto; (Tokyo, JP) ; Miura, Ikuo; (Tokyo,
JP) |
Correspondence
Address: |
Merchant & Gould P.C.
P.O. Box 2903
Minneapolis
MN
55402-0903
US
|
Assignee: |
Nippon Sanso Corporation
|
Family ID: |
26600834 |
Appl. No.: |
09/947860 |
Filed: |
September 5, 2001 |
Current U.S.
Class: |
220/830 ;
220/703; 220/835; 220/847; 220/849; 222/536; 222/556 |
Current CPC
Class: |
B65D 47/0885 20130101;
A47G 19/2266 20130101; B65D 2251/1058 20130101 |
Class at
Publication: |
220/830 ;
220/835; 220/847; 220/256; 220/703; 220/849; 222/536; 222/556 |
International
Class: |
A47G 019/22 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 27, 2000 |
JP |
2000-294154 |
Jan 15, 2001 |
JP |
2001-6500 |
Claims
What is claimed is:
1. A cap body of a beverage container comprising: a
cylindrically-shaped drinking mouth member releasably provided in a
mouth portion of a container body; a lid member connected to said
drinking mouth member via a hinge axis for opening and closing an
upper opening of said drinking mouth member; a spring for urging
said lid member to the opening direction; and a lock member
provided in a position diametrically against said hinge axis of
said drinking mouth member for maintaining said lid member in a
closing state, wherein said drinking mouth member comprises a
drinking mouth formed in said lock member side of a peripheral wall
of said upper opening; a bottom wall where said drinking mouth side
thereof is made lower and said hinge axis side thereof is made
higher; a liquid hole formed in said drinking mouth side and an air
hole formed in a hinge axis side on a connection line between said
hinge axis side of said bottom wall and said lock member side, and
said lid member comprises an inner cap provided with a seal member
for sealing said liquid hole and said air hole.
2. The cap body of the beverage container of claim 1, wherein an
uppermost margin of said drinking mouth is formed in an uppermost
position of an upper peripheral wall of said drinking mouth
member.
3. A cap body of a beverage container comprising: a
cylindrically-shaped shoulder member releasably provided in a mouth
portion of a container body; a lid member for opening and closing
an opening portion of said shoulder member; a hinge axis being
inserted into a hinge axis supporting portion of said shoulder
member and a hinge axis receiving portion of said lid member; a
spring provided in said hinge axis for urging said lid member to
the opening direction; and a lock member provided in a position
diametrically against said hinge axis for maintaining said lid
member in a closing state, wherein at least one of said hinge axis
supporting portion or said hinge axis receiving portion is provided
with a protrusion portion to which said lid member or said shoulder
member slidably contacts, in an opening operation of said lid
member.
4. The cap body of the beverage container of claim 3, wherein said
protrusion portion is such formed that a radial dimension thereof
becomes gradually larger toward the opening direction of said lid
member.
5. The cap body of the beverage container of claim 3 or 4, wherein
slidable contact between said protrusion portion and said lid
member or said shoulder member is linear contact.
6. The cap body of the beverage container of claim 3 or 4, slidable
contact area between said protrusion portion and said lid member or
said shoulder member increases according to an opening operation of
said lid member.
7. The cap body of the beverage container of claim 5, slidable
contact area between said protrusion portion and said lid member or
said shoulder member increases according to an opening operation of
said lid member.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a cap body of a beverage
container capable of directly drinking beverage in a container body
by opening a lid with a touch.
[0003] 2. Description of the Prior Art
[0004] For example, a cap body disclosed in Japanese laid-open
publication No. Hei 9-299253, which is cylindrically shaped and is
releasably provided in a mouth portion of a container body,
comprises a lid member connected via a hinge axis for opening and
closing an upper opening, a spring for urging the lid member to the
opening direction, and a lock member provided in a position
diametrically against the hinge axis for maintaining the lid member
in a closing state. The cap body is formed with a liquid-pouring
passage in a distance from an inlet opening opened to an inside of
the container body to an outlet opening reaching an upper opening.
When the lock of the lid member is released, the lid member is
opened by urging force of the spring, thereby it is possible to
directly drink beverage in the container by setting one's lips to
an peripheral wall of an upper opening of a drinking mouth
member.
[0005] However, in the above-mentioned constructions, since a
diameter of the inlet opening of the liquid-pouring passage is
large, especially when user tries to drink beverage by inclining
the container body while getting on a vehicle, there exists such a
problem that a large of amount of the beverage in the container
flows out due to vibration or the like, to thereby soil user's
clothes. Furthermore when hot beverage is put in the container,
since an inlet opening area of the liquid-pouring passage is large,
there exists such problem that a pressure applied to an inner cap
of the lid member blocking the inlet opening becomes larger and
then the lid member is vigorously released when the lock member is
pressed. Moreover, in order to cope with the pressure applied to
the lid member, strength and accuracy of the lock member are
required.
[0006] Furthermore, if the urging force of the spring is strong
when the lock member of the lid member is released while user is
holding the container body, there exist such problems that the lid
member is vigorously opened to clash into a shoulder member of the
cap body to thereby make user feel unpleasant impact on its hand or
to make user feel unpleasant clash sound. If such clash is
repeatedly occurred, there is such problem that an impact load is
applied to a hinge axis supporting portion of the cap body, thereby
the hinge axis supporting portion is damaged due to its long-time
use. In addition, since the container body becomes lighter as the
beverage in the container diminishes, the container body is shaken
by an impact force to thereby fall down. On this account, it is
necessary to consider a weight of the lid and a weight/height of a
container body, particularly an impact force when the container
body is empty, in selecting a spring. Thus, there exist such
problems that it can't help selecting a spring having a limited
urging force and a selection range of the spring becomes narrower.
To the contrary, when the urging force of the spring is weak, there
are such problems that the lid member is not sufficiently opened or
the lid member slopingly opened for drinking falls down due to its
weight.
SUMMARY OF THE INVENTION
[0007] Therefore, the objective of the present invention is to
provide a cap body of a beverage container where a large amount of
beverage in a container body doesn't flow out due to vibration or
the like, and the lid member is not vigorously released even if hot
beverage is put in the container, and where a degree of freedom to
select a spring for opening the lid member is improved by
alleviating impact force in an opening operation of the lid
member.
[0008] In order to achieve the above-mentioned objective, according
to the present invention, there is provided a cap body of a
beverage container comprising: a cylindrically-shaped drinking
mouth member releasably provided in a mouth portion of a container
body; a lid member connected to the drinking mouth member via a
hinge axis for opening and closing an upper opening of the drinking
mouth member; a spring for urging the lid member to the opening
direction; and a lock member provided in a position against the
hinge axis of the drinking mouth member for maintaining the lid
member in a closing state, wherein the drinking mouth member
comprises a drinking mouth formed in the lock member side of a
peripheral wall of the upper opening; a bottom wall where the
drinking mouth side thereof is made lower and the hinge axis side
thereof is made higher; a liquid hole formed in the drinking mouth
side and an air hole formed in a hinge axis side on a connection
line between the hinge axis side of the bottom wall and the lock
member side; and the lid member comprises an inner cap provided
with a seal member for sealing the liquid hole and the air hole.
Furthermore, according to the present invention, it is preferred
that an uppermost margin of the drinking mouth is formed in an
uppermost position of an upper peripheral wall of the drinking
mouth member.
[0009] In addition, according to the present invention, there is
provided a cap body of a beverage container comprising: a
cylindrically-shaped shoulder member releasably provided in a mouth
portion of a container body; a lid member for opening and closing
an opening portion of the shoulder member; a hinge axis being
inserted into a hinge-axis supporting portion of the shoulder
member and a hinge-axis receiving portion of the lid member; a
spring provided in the hinge axis for urging the lid member to the
opening direction; and a lock member provided in a position
diametrically against the hinge axis for maintaining the lid member
in a closing state, wherein at least one of the hinge axis
supporting portion or the hinge axis receiving portion is provided
with a protrusion portion to which the lid member or the shoulder
member slidably contacts, in an opening operation of the lid
member. In the cap body thus constructed, it is preferred that the
protrusion portion is such formed that a radial dimension thereof
becomes gradually larger toward the opening direction of the lid
member, and slidable contact between the protrusion portion and the
lid member or the shoulder member is linear contact, and slidable
contact area between the protrusion portion and the lid member or
the shoulder member increases together with an opening operation of
the lid member.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] For fuller understanding of the nature and objects of the
invention, reference should be made to the following detailed
description taken in conjunction with the accompanying drawings in
which:
[0011] FIG. 1 is a cross-sectional view of the first embodiment
according to the present invention in a state where a cap body is
opened;
[0012] FIG. 2 is a cross-sectional view of the first embodiment
according to the present invention in a state where the cap body is
closed;
[0013] FIG. 3 is a plane view of the fist embodiment according to
the present invention in a state where the cap body is opened;
[0014] FIG. 4 is a cross-sectional view of the second embodiment
according to the present invention in a state where a lid member is
opened to slidably contact on a protrusion portion;
[0015] FIG. 5 is a perspective view of an upper back side of the
beverage container showing the protrusion portion of the second
embodiment according to the present invention;
[0016] FIG. 6 is an upper cross-sectional view of the beverage
container according to the present invention;
[0017] FIG. 7 is an upper front perspective view of the beverage
container according to the present invention in a state where the
lid member is opened;
[0018] FIG. 8 is a cross-sectional view of the third embodiment
according to the present invention in a state where a lid member is
opened to slidably contact on a protrusion portion;
[0019] FIG. 9 is an upper side view of the beverage container
showing the protrusion portion of the fourth embodiment according
to the present invention; and
[0020] FIG. 10 is a perspective view of an upper back side of the
beverage container of the fourth embodiment according to the
present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0021] Hereinafter, the present invention will be explained in
detail based on the drawings of the first embodiment where a cap
body of a beverage container has metallic dual heat-insulating
constructions. A beverage container 1, of a size capable of holding
with one hand, comprises a container body 2 of a heat-insulating
construction, a cap body 3 releasably mounted in a mouth portion of
the container body 2. Since the container body 2 is such
constructed that an metallic inner container 21 and an metallic
outer container 22, whose upper portions are opened, are integrally
joined at upper ends thereof, and a heat-insulating portion 23 of a
vacuum heat-insulating construction is provided between the
containers 21, 22. Furthermore, the outer periphery of the mouth
portion of the container body 2 is formed with a screw portion 24
for threadably connecting the cap body 3.
[0022] The cap body 3 comprises a cylindrically shaped drinking
mouth member 4 releasably provided in the mouth portion of the
container body 2 and a lid member 6 for opening and closing an
upper opening of the drinking mouth member 4. The drinking mouth
member 4 comprises a cap body receiving portion 41 formed as a
bottomed-cylindrical shape, and an attaching portion 42 assembled
with the cap body receiving portion 41 for being connected to the
container body 2. The lid member 6 is connected to one side of the
attaching portion 42 via a hinge axis 5 and is urged to the opening
direction by a torsion spring 7 wound on the hinge axis 5. The
torsion spring 7 has a spring force to rotate the lid member 6 at
an angle of more than 180.degree. from its closing state and to
maintain the lid member 6 at such rotated position. Furthermore, a
lock member 8 for maintaining the lid member 6 in a closing state
by hitching a tip end of the lid member 6 is provided in a position
diametrically against the hinge axis 5 of the attaching portion
42.
[0023] The cap body receiving portion 41, in the lock member 8 side
of an upper opening peripheral wall, comprises a drinking mouth 43
which is such formed that the peripheral wall of the lock member 8
side is made higher than the peripheral wall of the hinge axis 5
side. The uppermost margin of the drinking mouth 43 is formed in
the uppermost position of the upper peripheral wall. Furthermore,
there is provided in a lower inner side of a cylindrical body of
the cap body receiving portion 41 a bottom wall 44 where the
drinking mouth 43 side thereof is made lower and the hinge axis 5
side thereof is made higher. In the bottom wall 44, there are
respectively provided a liquid hole 45 in the drinking mouth 43
side and an air hole 46 in the hinge axis 5 side on a connection
line between the hinge axis 5 side and the lock member 8 side, to
form a liquid passage 47 from the bottom wall 44 to the upper
opening. Moreover, the outer periphery of the lower cylindrical
body of the cap body receiving portion 41 is provided with a
packing 48 for adhering closely to the inner peripheral wall of the
mouth portion of the container body 2. The inner periphery of the
attaching portion 42 is formed with a screw portion 49 threadably
engaging the screw portion 24 of the container body 2.
[0024] The lid member 6 comprises a lid portion 61 for covering the
upper opening of the cap body receiving portion 41 and an inner cap
62 provided in the lid portion 61 to be inserted into the liquid
passage 47. The inner cap 62 is provided with a seal member 63. The
seal member 63 results from integrally forming a flowing-out side
seal portion 64 for adhering closely to the inner peripheral wall
near the upper opening of the liquid passage 47, a flowing-in side
seal portion 65 for closing the liquid hole 45 from the upper
direction thereof and an air-hole seal portion 66 for closing the
air hole 46 from the upper direction thereof. The tip end of the
lid member 61 is provided with a hitching nail 67 to be hitched to
the lock member 8 and an engaging piece 68 to be engaged to a lock
ring 81 of the lock member 8.
[0025] The lock member 8 comprises a hitching portion 82 at its
upper portion and a pressing portion 83 at its lower portion. The
middle portion of the lock member 8 is rotatably supported by a
horizontal supporting axis 84 provided in the attaching portion 42.
The hitching portion 82 is always urged to the closing direction by
a spring 85 wound on the supporting axis 84.
[0026] According to the cap body 3 thus constructed, when the
pressing portion 83 of the lock member 8 is radially inwardly
pressed from the closing state shown in FIG. 2, the hitching
portion 82 of the lock member 8 is radially outwardly opened, and
the engagement between the engaging portion 82 and the engaging
nail 67 of the lid member 6 is released. Then, the lid member 6, as
shown in FIG. 1 and FIG. 3, is rotatably opened to the upper
direction by the urging force of the torsion spring 7 to thereby
make it possible to directly drink the beverage in the container
body 2 via the drinking mouth 43 from the liquid hole 45 by
inclining the beverage container 1 with setting user's lip on the
drinking mouth 43.
[0027] At this time, since the uppermost margin of the drinking
mouth 43 is formed in the uppermost position of the upper
peripheral wall of the cap body receiving portion 41, visibility of
the drinking mouth 43 is improved. Furthermore, the back surface of
the lid member 6 doesn't contact user's face to thereby make it
hygienic. In addition, since there exists a distance from the
liquid hole 45 to the drinking mouth 43, there becomes no such
occasion that the beverage in the container quickly flows out,
thereby it is possible to provide user with relief feeling.
Furthermore, even if the beverage container is shakened due to a
vibration when user drinks the beverage in container while getting
on a vehicle, since the opening area of the liquid hole is narrow
and there exists a distance between the liquid hole 45 and the
drinking mouth 43, there becomes no such occasion that a large
amount of beverage in the container flows out. Moreover, since an
opening area of the liquid hole 45 is narrower than those of prior
arts when hot beverage is put in the container body 2, a pressure
applied to the inner cap 62 of the lid member 6 becomes smaller and
then, there becomes no such occasion that the lid member 6 is
vigorously released when the lid member 6 is opened.
[0028] Next, hereinafter, the present invention will be explained
in detail based on the drawings of the second embodiment where a
cap body of a beverage container comprises heat-insulating
construction. FIG. 4 to FIG. 7 show the second embodiment of the
present invention. A beverage container 11, of a size capable of
holding with one hand, comprises a container body 12 of a metallic
dual heat-insulating construction, a synthetic-resin cap body 13
releasably mounted in a mouth portion of the container body 12.
Since the container body 12 is such constructed that a metallic
inner container 121 and a metallic outer container 122, where upper
portions thereof are opened, are integrally joined at upper ends
thereof, and a heat-insulating portion 123 of a vacuum
heat-insulating construction is provided between the containers
121, 122. Furthermore, the outer periphery of the mouth portion of
the container body 12 is formed with a screw portion 124 threadably
connecting the cap body 13.
[0029] The cap body 13 comprises a cylindrically-shaped shoulder
member 14 releasably attached at the mouth portion of the container
body 12 and a lid member 17 connected to the shoulder member 14 via
a hinge axis 16 for opening and closing an upper opening portion of
the shoulder member 14.
[0030] The shoulder member 14 comprises an attaching portion 141
threadably connected to the screw portion 124 of the container body
12, a cap body receiving portion 142 assembled with the attaching
portion 141 to be inserted into the inner periphery of the mouth
portion of the container body 12. The attaching portion 141 is
formed with a hinge axis supporting portion 143 at its one side so
that the central portion of a hinge axis 16 is supported by the
hinge axis supporting portion 143. Furthermore, a position
diametrically against the hinge axis supporting portion 143 is
formed with a lock member 18 for maintaining the lid member 17 in a
closing state. The cap body receiving portion 142 is formed as a
bottomed-cylindrical shape and results from respectively forming a
drinking mouth 144 by making the peripheral wall of the upper
opening of the lock member 18 side higher, a liquid hole 146 in the
drinking mouth 144 side of a bottom wall 145 where the hinge axis
supporting portion 143 side thereof is made higher and the drinking
mouth 144 side thereof is made lower, and an air hole 147 in the
hinge axis supporting portion 143 side, to thereby form a liquid
passage 148 from the bottom wall 145 to the upper opening.
Furthermore, a lower outer periphery is formed with a packing 149
adhering closely to the inner peripheral wall of the mouth portion
of the container body 12.
[0031] The hinge axis supporting portion 143, as shown in the
cross-sectional view of FIG. 4, is integrally and continuously
formed with the upper portion of the attaching portion 141 to be an
approximate cylindrical shape in its cross-sectional plane, and has
a horizontal hinge axis inserting hole 151 at the central portion
thereof. The hinge axis supporting portion 143 is such formed, that
when a radial dimension from the hinge axis inserting hole 151 to
the outer periphery may be divided as a front half portion over
which the lid member 17 rotates into the opening direction and a
rear half portion, the rear half portion is made to have a larger
radius, to thereby form a protrusion portion 152 on the outer
periphery thereof. That is to say, a radial dimension R2 from the
hinge axis inserting hole 151 of the rear half portion to the outer
periphery is made larger than a radial dimension R1 from the hinge
axis inserting hole 151 of the front half portion to the outer
periphery, and the protrusion portion 152 is such formed that the
radial dimension thereof becomes gradually lager from the starting
end side toward the rear side thereof. Moreover, the tip end of the
starting end side of the protrusion portion 152 is made as a
sharpened triangle shape.
[0032] In both sides of the hinge axis supporting portion 143, the
hinge axis 16 is wound with a torsion spring 19 urging the lid
member 17 into the opening direction.
[0033] The lid member 17 comprises a lid portion 171 covering the
upper opening of the cap body receiving portion 142 and an inner
cap 172 provided in the lid portion 171 to be inserted into the
liquid passage 148. The lid portion 171 is formed at its one side
with hinge axis receiving portions 173, 173 for respectively
supporting the both ends of the hinge axis 16, and the middle
portion between the hinge axis receiving portions 173, 173 is
formed with an inserting concave portion 174 for the hinge axis
supporting portion 143. The inserting concave portion 174
establishes a depth of an inner end portion 175 such that the inner
end portion 175 lineally contacts the protrusion portion 152 of the
hinge axis supporting portion 143 in the opening operation of the
lid member 17. Moreover, in a position diametrically against the
inserting concave portion 174, the lid portion 171 is formed with a
hitching portion 176 to be hitched to the lock member 18. The inner
cap 172 is provided with a seal member 177 for sealing the liquid
hole 146 and the air hole 147 in a closing state.
[0034] The lock member 18 is rotatably supported by a horizontal
supporting axis 181 provided in the attaching portion 141. An upper
portion of the supporting axis 181 is provided with a hitching
portion 182, and a lower portion thereof is provided with a
pressing portion 183 respectively. The hitching portion 182 is
always urged into the closing direction by a spring 184 wound on
the supporting axis 181.
[0035] According to the cap body 13 thus constructed, when the
pressing portion 183 of the lock member 18 is pressed, the hitching
portion 182 is outwardly opened, and the engagement between the
hitching portion 182 and the hitching portion 176 of the lid member
17 is released. Then, the lid member 17 is upwardly rotated about
the hinge axis 16 to be opened by the urging force of the torsion
spring 19. At this time, in a step that the lid member 17 is opened
to be rotated from its upright state to the rear direction, the
inner end portion 175 of the inserting concave portion 174 of the
lid member 17 lineally and slidably contacts the protrusion portion
152 of the hinge axis supporting portion 143. Since the tip end of
the starting end side of the protrusion portion 152 is formed as a
sharpened triangle shape, a contact area between the protrusion
portion 152 and the inner end portion 175 increases according to
the opening operation of the lid member 17. Thus, a speed toward
the opening direction of the lid member 17 decreases and then, the
rotation of the lid member 17 is stopped before it collides with
the shoulder member 14.
[0036] Therefore, an impact force in the opening operation of the
lid member 17 is alleviated, and an unpleasant impact is not
applied to user's hand holding the container body 12. Furthermore,
since there become no need to consider strength of the urging force
of the torsion spring 19, it is possible to improve a degree of
freedom in selecting the torsion spring 19 to thereby decrease the
manufacturing cost. Moreover, there becomes no such problems that
the urging force of the torsion spring 19 is too weak for the lid
member to be sufficiently opened, or that the lid member 17 falls
down due to failing to sustain its weight or inclining strength
when the beverage container is inclined for drinking.
[0037] FIG. 8 shows the third embodiment of the present invention
where a radial dimension from a hinge axis inserting hole 151 of a
protrusion portion 152 at the hinge axis supporting portion 143 to
an outer periphery is such formed that a radial dimension R3 of a
rear end side is gradually larger than a radial dimension R2 of a
starting end portion thereof. Thus, in the opening operation of the
lid member 17, as the rotation of the lid member 17 becomes larger,
the inner end portion 175 of the lid member 17 strongly, lineally
and slidably contacts the protrusion portion 152 of the hinge axis
supporting portion 143, thereby the rotation of the lid member 17
is stopped before it collides with the shoulder member 14.
[0038] Therefore, it is possible to establish a rotation-stopping
position of the lid member 17 by considering changing the dimension
from the radial dimension R2 of the starting end side of the
protrusion portion 152 toward the radial dimension R3 of the rear
end side thereof. Moreover, it is possible to cope with such a case
even that a depth of the inner end portion 175 of the lid member 17
is changed due to assembling error.
[0039] FIG. 9 and FIG. 10 show the fourth embodiment of the present
invention. In this embodiment, similar to the second embodiment of
the present invention, is characterized in that a tip end of a
starting end side is formed as a sharpened triangle shape.
Protrusion portions 178, such formed that a radial dimension from a
hinge axis inserting hole 151 toward an outer periphery is made to
be gradually larger over a rear half portion, are respectively
formed in the hinge axis receiving portions 173, 173 of the lid
member 17 such that the respective protrusion portions 178 lineally
and slidably contact the upper margin of the shoulder member 14 in
the opening operation of the lid member 17. By such constructions,
it is also possible to achieve the same effects as the
previously-mentioned embodiments of the present invention.
[0040] As described above, since according to the present
invention, the cap body comprises a cylindrically-shaped drinking
mouth member releasably provided in a mouth portion of a container
body; a lid member connected to the drinking mouth member via a
hinge axis; a spring for urging the lid member to the opening
direction; and a lock member provided in a position against the
hinge axis of the drinking mouth member for maintaining the lid
member in a closing state, wherein the drinking mouth member
comprises a drinking mouth formed in the lock member side of a
peripheral wall of the upper opening; a bottom wall where the
drinking mouth side thereof is made lower and the hinge axis side
thereof is made higher; a liquid hole formed in the drinking mouth
side and an air hole formed in a hinge axis side on a connection
line between the hinge axis side of the bottom wall and the lock
member side, and the lid member comprises an inner cap provided
with a seal member for sealing the liquid hole and the air hole,
and since there exists a distance from the liquid hole to the
drinking mouth, there becomes no such occasion that the beverage in
the container quickly flows out thereby it is possible to provide
one with relief feeling. Furthermore, even though the beverage
container is shakened due to a vibration or the like when one tries
to drink the beverage in the container while getting on a vehicle,
since the opening area of the liquid hole is narrow and there
exists a distance from the liquid hole to the drinking mouth, there
becomes no such occasion that a large amount of beverage flows out.
Moreover, since an opening area of the liquid hole becomes narrower
than prior arts when hot beverage is put into the container body, a
pressure applied to the lid member is smaller thereby there becomes
no such occasion that the lid member is vigorously released when
the lid member is opened. In addition, by forming the uppermost
margin of the drinking mouth in the uppermost position of the upper
peripheral wall of the drinking mouth member, it is possible to
improve the visibility of the drinking mouth, and the back surface
of the lid member doesn't contact one' face to thereby make it
hygienic in drinking beverage.
[0041] Moreover, according to the present invention, since the cap
body of the beverage container connects a cylindrically-shaped
shoulder member releasably provided in a mouth portion of a
container body and a lid member for opening and closing an opening
portion of the shoulder member by a hinge axis being inserted into
a hinge-axis supporting portion of the shoulder member and a
hinge-axis receiving portion of the lid member, and since the cap
body provides a spring in the hinge axis for urging the lid member
to the opening direction, and provides at least one of the hinge
axis supporting portion or the hinge axis receiving portion with a
protrusion portion to which the lid member or the shoulder member
slidably contacts, in an opening operation of the lid member, when
the lid member upwardly rotates about the hinge axis to be opened
by the urging force of the spring, the lid member or the shoulder
member slidably contacts the protrusion portion and a speed to the
opening direction of the lid member decreases thereby the rotation
of the lid member is stopped before it collides with the shoulder
member. Thus, the impact force of the lid member in an opening
operation is alleviated, and an unpleasant impact is not applied to
one's hand holding the container body. Furthermore, since the
urging force of the spring to open the lid member will do only if
it is enough to open the lid member, it is possible to improve a
degree of freedom in selecting the spring to thereby decrease the
manufacturing cost.
* * * * *