WO2009113334A1

WO2009113334A1 - Cap opener

Info

Publication number: WO2009113334A1
Application number: PCT/JP2009/051435
Authority: WO
Inventors: 斎藤伸二
Original assignee: 東洋ガラス株式会社
Priority date: 2008-03-11
Filing date: 2009-01-29
Publication date: 2009-09-17
Also published as: KR20100099344A; CN102616710A; KR20100099349A; CN102602863B; KR101019016B1; CN101965308B; KR101019017B1; CN101965308A; CN102616710B; JP2009241999A; CN102602863A; JP4377445B2; HK1151271A1

Abstract

A cap opener which does not damage a bottle mouth regardless of whether the user of the cap opener uses a normal cap opening operation method or a reverse cap opening operation method. Tapered engaging claws are formed at the inner peripheral edges of the front end and the rear end of an opening, and each engaging claw is provided with shoulders protruding to the front side or the rear side of the engaging claw and located outward of opposite ends in the circumferential direction of the engaging claw. In cap opening operation, the shoulders make contact with the top surface of the bottle cap to prevent the cap opener from moving in the direction to the bottle, which prevents damage to the bottle mouth. Alternatively, protrusions and recesses are formed in those portions of the inner peripheral surface of the opening which are located outward of opposite ends in the circumferential direction of the engaging claws. In this case, in cap opening operation, the top surface and/or the peripheral wall of the bottle cap makes contact with the protrusions and recesses, which prevents the cap opener from moving in the direction to the bottle, preventing damage to the bottle mouth.

Description

bottle opener

The present invention relates to a bottle opener for removing a bottle crown.

When removing a bottle crown with a bottle opener, the bottle mouth may be damaged, and it may be dangerous because the finger may be damaged at the damaged part, or a piece of glass may enter the bottle. There is a problem that can not be used as.
A bottle opener that does not easily damage the bottle opening is disclosed in, for example, the following patent document.

In the techniques disclosed in

Patent Documents

1 and 2, engaging claws that engage with the lower end of the crown peripheral wall portion at the time of opening are provided on both sides excluding the center portion of the opening, and the center portion is bottled at the time of opening operation. It is designed not to touch the mouth.
In the technique disclosed in Patent Document 3, a tooth (engaging claw) that engages with the lower end of the crown peripheral wall at the time of opening is provided at the center of the opening, and a stepped shoulder is formed at the base of the tooth. The tooth is prevented from moving to the bottle side during the opening operation by preventing the tooth from coming into contact with the bottle mouth.
Japanese Utility Model Publication No. 4-135494 Japanese Utility Model Publication No. 56-38093 Japanese Utility Model Publication No. 58-143392

In the bottle openers of

Patent Documents

1 and 2, since the engaging claws are provided on both sides of the center of the opening, the contact portion between the engaging claws and the crown peripheral wall portion becomes small at the time of opening, and the crown peripheral wall portion The pleats may be deformed and cannot be opened, and at that time, the engaging claw is inserted deeper into the lower end of the crown peripheral wall portion to perform the opening operation, so that the engaging claw eventually comes into contact with the bottle mouth, May damage the bottle.
In the bottle opener of Patent Document 3, the teeth (engaging claws) are provided only at the center of the opening, and the shoulders are in contact with the crown peripheral wall. The folds of the crown wall may be deformed and cannot be opened, and at that time, the shoulder will not contact the crown wall due to the deformation of the folds, and the teeth will be inserted deeper into the lower end of the crown wall. By performing the opening operation at, the engaging claw may eventually come into contact with the bottle mouth and damage the bottle.
In addition, since the shoulder part is a straight line in plan view, there are few contact parts between the shoulder part and the crown peripheral wall part. There is a risk of touching the mouth and damaging the bottle.

This kind of bottle opener usually has an engaging claw on the rear end side of the inner peripheral edge of the opening engaged with the lower end of the crown peripheral wall portion as an action point, and the tip side of the inner peripheral edge of the opening is brought into contact with the crown top surface. With this as a fulcrum, the handle is rotated upward to open the plug (this opening method is referred to as a “normal operation opening method” for convenience).
However, when the condition of the bottle mouth being damaged during opening was examined, the tip end side of the inner peripheral edge of the opening was engaged with the lower end of the crown peripheral wall, and this was used as the point of action, and the rear end side of the inner peripheral edge of the opening was the crown top surface. The bottle mouth is damaged when the plug opening method (this method is called "reverse action opening method" for convenience) is used. It turned out to be easy.
This is because, as shown in FIG. 7, when the handle is rotated downward, a horizontal component force F that moves the bottle opener (inner edge of the opening on the front end side) in the bottle direction is generated, and the bottle opener moves in the bottle direction. This makes it easier for the inner periphery of the opening on the tip side to come into contact with the bottle mouth, and the action of turning downwards, such as tapping the handle with the palm of the hand, is easy to apply force, and the impact when the inner periphery of the opening touches the bottle mouth increases. This is the cause.
In this reverse operation opening method, there are many bottle openers that are not assumed as regular opening methods. However, it is preferred when opening a beer bottle at a restaurant, etc., because it makes a flashing sound like a “pong”, and it is convenient for opening a bottle in a case. It is not uncommon to adopt a reverse opening method.

SUMMARY OF THE INVENTION An object of the present invention is to provide a bottle opener that is less likely to damage the bottle opening and easy to open, regardless of whether the user uses the opening method of the normal operation or the reverse operation. To do.

[Claim 1]
The present invention, in a bottle opener having a crown opening portion provided with an opening at the tip of the handle,
An engagement claw is provided on the inner peripheral edge on the front end side and rear end side of the opening,
The engaging pawl has a concave shape in a plan view and a tapered shape in which the cross-sectional shape is cut out in a triangular shape on both the front and back sides,
The outer sides of both ends in the circumferential direction of the engaging claw are shoulders that protrude from the front and back surfaces of the engaging claw to the front side or the back side because the notch is not made.
A bottle opener characterized in that when one of the engaging claws is engaged with the lower end of the crown peripheral wall at the time of opening, the shoulder on the outer side of the other engaging claw contacts the crown top surface. .

In both the forward opening method and the reverse opening method, the shoulder touches the top of the crown when opening, so the shoulder bites into the top of the crown when opening, and the bottle opens. It becomes difficult to move in the bottle direction, and the engagement claw is prevented from coming into contact with the bottle mouth.
In addition, since the front end shape of the engaging claw is a concave curve shape, the contact portion between the engaging claw and the lower end of the crown peripheral wall portion is increased, and there is less deformation of the folds on the crown peripheral wall portion when opening the plug. It becomes easy.

[Claim 2]
Further, the present invention is a bottle opener having a crown opening portion provided with an opening at the tip of the handle,
An engagement claw is provided on the inner peripheral edge on the front end side and rear end side of the opening,
The engaging claw has a tapered shape in which the tip shape in plan view is a concave curve shape, and the cross-sectional shape is cut out in a triangular shape on both the front and back sides,
Concave and convex portions are formed on the inner peripheral surface on the outer side of both ends in the circumferential direction of the engaging claw,
When opening the cap, the crown top surface and / or the peripheral wall portion is in contact with the uneven portion.
Note that the concavo-convex part may be only a concave part or only a convex part, and both the concave part and the convex part may be formed.

In both of the forward opening method and the reverse opening method, the crown top surface and / or the peripheral wall part contacts the uneven part when opening, so that the crown deforms with the opening operation and the uneven part. Bites into the crown surface and / or the peripheral wall, making it difficult for the bottle opener to move in the bottle direction and preventing the engaging claw from contacting the bottle mouth.
In addition, since the front end shape of the engaging claw is a concave curve shape, the contact portion between the engaging claw and the lower end of the crown peripheral wall portion is increased, and there is less deformation of the folds on the crown peripheral wall portion when opening the plug. It becomes easy.

[Claim 3]
Further, the present invention is a bottle opener having a crown opening portion provided with an opening at the tip of the handle,
An engagement claw is provided on the inner peripheral edge on the front end side and rear end side of the opening,
The engaging claw has a tapered shape in which the tip shape in plan view is a concave curve shape, and the cross-sectional shape is cut out in a triangular shape on both the front and back sides,
The bottle opener is characterized in that the front and back surfaces of the engaging claw are rough surfaces.

When opening, the rough surface of the engaging claw comes into contact with the lower end of the peripheral wall of the crown and the top surface, so the bottle opener is difficult to move in the bottle direction with the opening operation, and the engaging claw comes into contact with the bottle mouth. Is prevented.
In addition, since the front end shape of the engaging claw is a concave curve shape, the contact portion between the engaging claw and the lower end of the crown peripheral wall portion is increased, and there is less deformation of the folds on the crown peripheral wall portion when opening the plug. It becomes easy.

[Claim 4]
Further, according to the present invention, the concave and convex portions are formed on the inner peripheral surface outside the circumferential end portions of the engaging claws, and the crown top surface and / or the peripheral wall portion is in contact with the concave and convex portions when the cap is opened. Bottle opener.

In both the forward opening method and the reverse opening method, the shoulder touches the crown top surface when opening, and the crown top surface is bitten by the opening operation. Since the portion comes into contact with the concavo-convex portion, it is difficult for the bottle opener to move in the bottle direction with the opening operation, and the engagement claw is prevented from coming into contact with the bottle mouth.

[Claim 5]
Moreover, this invention is a bottle opener of

Claim

1, 2, or 4 with which the front and back of the said engaging claw is a rough surface.

With the rough surface of the engaging claw and the shoulder and / or uneven part, the bottle opener moves in the bottle direction with the opening operation in both the normal opening method and the reverse opening method. It is difficult to move and the engaging claw is prevented from coming into contact with the bottle mouth.

[Claim 6]
The present invention is the bottle opener according to any one of claims 1 to 5, wherein the front end shape of the engaging claw is a concave curve having a curvature radius of 22 to 27 mm.

By setting the radius of curvature of the engaging claw to 22 to 27 mm, the engaging claw can be brought into contact with the lower ends of the three or four pleat convex portions of the crown peripheral wall portion, and the opening operation becomes extremely easy.

[Claim 7]
Further, the present invention is a bottle opener having a crown opening portion provided with an opening at the tip of the handle,
Provided with engaging claws thinner than the periphery on the inner peripheral edge on the front end side and rear end side of the opening,
The engaging claw has a concave curved shape at the distal end in a plan view, and a stepped portion having a concave curved shape in a planar view is formed on the proximal end side of the engaging claw. The bottle opener is characterized in that the stepped portion comes into contact with the lower end of the crown peripheral wall when engaged.

In both the forward opening method and the reverse opening method, the stepped part contacts the crown wall when opening, so the bottle opener is difficult to move in the bottle direction with the opening operation. Is prevented from touching the mouth of the bottle.
Since the front end shape of the engaging claw is a concave curve, the contact portion between the engaging claw and the lower end of the crown peripheral wall portion is increased, and there is less deformation of the folds on the crown peripheral wall portion at the time of opening, and the opening operation is easy. Become.
In addition, since the stepped portion has a concave curved shape in plan view, the contact portion between the stepped portion and the crown fold increases when opening, and even if the stepped portion is strongly pressed against the fold, the folds are not easily deformed, and the engaging claw is on the bottle side. Since it is difficult to move, it is prevented that the engaging claw contacts the bottle mouth and the bottle mouth is damaged.

[Claim 8]
Moreover, this invention is a bottle opener of Claim 7 which formed the inclined surface which becomes a downward inclination toward the said opening in the outer peripheral area | region of the said engagement nail | claw.

[Claim 9]
Moreover, this invention is a bottle opener of Claim 8 whose said inclined surface is a rough surface.

By providing an inclined surface, the inclined surface comes into contact with the crown top surface in accordance with the opening operation, and the bottle opener is moved in the bottle direction to prevent the engaging claw from touching the bottle mouth. If the inclined surface is roughened, the effect is further increased.

[Claim 10]
In the present invention, a shoulder that protrudes from the front and back surfaces of the inclined surface to the front side or the back side is formed outside both ends in the circumferential direction of the inclined surface. 10. The bottle opener according to

claim

8 or 9, wherein the shoulder portion on the other side contacts the crown top surface when engaged with the lower end of the portion.

In both the forward opening method and the reverse opening method, the shoulder touches the top of the crown when opening, so the shoulder bites into the top of the crown when opening, and the bottle opens. It becomes difficult to move in the bottle direction, and the engagement claw is prevented from coming into contact with the bottle mouth.

[Claim 11]
In the present invention, an uneven portion is formed on the inner peripheral surface on the outer circumferential side of the engaging claw, and the crown top surface and / or the peripheral wall portion contacts the uneven portion when the cap is opened. It is a bottle opener.

In any case of the forward opening method and the reverse opening method, the crown top surface and / or the peripheral wall portion comes into contact with the uneven portion, so that the bottle opener is difficult to move in the bottle direction along with the opening operation, The engagement claw is prevented from contacting the bottle mouth.

[Claim 12]
The present invention is the bottle opener according to any one of claims 7 to 11, wherein the front end shape of the engaging claw is a concave curve having a curvature radius of 22 to 27 mm.

[Claim 13]
The present invention is the bottle opener according to any one of claims 7 to 12, wherein the stepped portion is a concave curve in plan view with a radius of curvature of 12.5 to 13.5 mm.

By setting the radius of curvature of the stepped portion to 12.5 to 13.5 mm, the stepped portion can be brought into contact with 3 to 4 crown pleats at the time of opening, and the folds are deformed at the time of opening and the engaging claws Contact with the mouth is prevented.

With the bottle opener of the present invention, the bottle opener is difficult to move in the bottle direction with the opening operation in both the forward opening method and the reverse opening method, and the engaging claw contacts the bottle opening. This prevents the possibility of damaging the bottle mouth.
In addition, since the front end shape of the engaging claw is a concave curve shape, the contact portion between the engaging claw and the lower end of the crown peripheral wall portion is increased, and there is less deformation of the folds on the crown peripheral wall portion when opening the plug. It becomes easy.

It is the top view and center longitudinal cross-sectional view of the bottle opener 1 of Example 1. FIG. It is the A section expansion perspective view of FIG. It is the B section enlarged end view of Drawing 1. It is a principal part top view of the normal operation opening method. It is explanatory drawing of the normal operation plugging method. It is principal part explanatory drawing of the normal operation plugging method. It is explanatory drawing of the reverse operation opening method. It is a principal part top view of the reverse operation opening method. It is explanatory drawing of an example of a rough surface. It is explanatory drawing of the other example of a rough surface. It is a schematic plan view of the bottle opener 12 of the second embodiment. FIG. 12 is a cross-sectional end view taken along line CC and DD in FIG. 11. It is explanatory drawing of the normal operation opening method using the bottle opener. It is the EE sectional view taken on the line in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bottle opener 2 Crown extraction part 3 Opening 4 Engagement claw 5 Rough surface 6 Shoulder part 7 Uneven part 8 Protrusion 9 Handle 10 Bottle 11 Crown 11a Top surface 11b Peripheral wall part 12 Bottle opener 13 Engagement nail 14 Step part 15 Inclined surface

[Example 1]
1 is a plan view and a central longitudinal sectional view of a bottle opener of Example 1, FIG. 2 is an enlarged perspective view of part A of FIG. 1, FIG. 3 is an enlarged end view of part B of FIG. FIG. 5 is an explanatory view of the forward opening method, FIG. 6 is an explanatory view of the essential portion of the forward opening method, FIG. 7 is an explanatory view of the backward opening method, and FIG. The principal part top view of an operation | movement opening method, FIG. 9, FIG. 10 is explanatory drawing of the example of a rough surface.
In the figure, reference numeral 1 is a bottle opener, 2 is a crown extraction part, 3 is an opening, 4 is an engaging claw, 5 is a rough surface, 6 is a shoulder part, 7 is an uneven part, 8 is a protrusion, 9 is a handle, A glass bottle, 11 is a crown, 11a is a top surface, and 11b is a peripheral wall.

The bottle opener 1 is made of a stainless steel plate having a thickness of 2.4 mm, has a crown punched portion 2 at the tip of the handle 9, and an opening 3 is formed in the crown punched portion. The vertical width W ₁ of the opening 3 is 18 mm, and the horizontal width W ₂ is 27 mm. The shape of the opening is axisymmetric with respect to the vertical and horizontal center lines.

Engaging claws 4 are formed on the inner peripheral edge of the opening 3 on the front end side and rear end side. The engagement claw 4 has a tapered shape in which the tip shape in plan view is a concave curve when viewed from the opening side, and the cross-sectional shape is notched in a triangular shape on both the front and back sides. The length L of the engaging claw is 22.6 mm, the width (depth) is 2.2 mm, and the thickness t of the tip is 1.2 mm. The radii of curvature R ₁ and R ₂ of the front end shape (concave curve) of the rear end side and front end side engaging claws are both 25 mm.
The angles θ ₁ and θ ₂ formed by the front and back slopes of the engaging claw 4 with respect to the axis are both about 17 °, and the front and back slopes are both rough surfaces 5 (FIG. 3). The shape of the engaging claw 4 is axisymmetric with respect to the vertical and horizontal center lines of the opening 3.

The outer sides of both end portions in the circumferential direction of the engaging claw 4 are shoulder portions 6 that protrude from the front and back surfaces (slopes) of the engaging claw 4 to the front side or the back side by not being cut out. When one engaging claw 4 is engaged with the lower end of the peripheral wall portion 11b of the crown 11 at the time of opening, the outer shoulder portion 6 of the other engaging claw contacts the crown top surface (FIGS. 4 and 8). ). The shape of the shoulder 6 is axisymmetric with respect to the vertical and horizontal center lines of the opening 3.

Concave and convex portions 7 are formed on the inner peripheral surface on the outer side of both end portions in the circumferential direction of the engaging claw 4. In this embodiment, the concavo-convex portion 7 is composed of two convex portions 7a (FIG. 2). The concavo-convex part 7 contacts the top surface 11a or the peripheral wall part 11b of the crown 11 at the time of opening (FIGS. 4 and 8). The shape of the uneven portion 7 is axisymmetric with respect to the vertical and horizontal center lines of the opening 3.
In the present invention, the top surface of the crown includes not only the horizontal surface portion of the zenith portion but also the rounded portion on the outer periphery thereof, and the peripheral wall portion is a portion where folds are formed below the rounded portion.

FIGS. 4 to 6 show opening by a normal operation opening method using the bottle opener 1. 4, 5 and 6, the rear end side engaging claw of the bottle opener 1 is inserted into the lower end of the crown peripheral wall portion 11b as an action point, and the front end side engaging claw is brought into contact with the crown top surface 11a. This is the state that is used as a fulcrum. At this time, since the shoulder 6 on the tip side is in contact with the crown top surface 11a, the shoulder 6 on the tip side bites into the crown top surface 11a during the subsequent opening operation, and the bottle opener 1 moves in the bottle direction. Is prevented. Further, since the rough surface 5 of the engagement claw on the rear end side is in contact with the lower end of the crown peripheral wall portion 11b, the bottle opener 1 is prevented from moving in the bottle direction during the opening operation due to friction. The lower part of FIG. 6 shows the middle of the opening operation. When the opening operation is performed, the crown 11 is deformed, so that the rough surface 5 of the engaging claw on the tip side comes into contact with the crown top surface 11a, and the uneven portions on both sides of the engaging claw on the tip side are crowned. A large frictional force is generated by biting into the top surface or the peripheral wall of the bottle, preventing the bottle opener 1 from moving in the bottle direction.

7 and 8 show the opening by the reverse operation opening method using the bottle opener 1, the engaging claw on the front end side of the bottle opener 1 is inserted into the lower end of the crown peripheral wall portion 11 b as the action point, and the rear end side The state which made the engaging claw contact the crown top surface 11a and made it a fulcrum is shown. At this time, since the shoulder 6 on the rear end side is in contact with the crown top surface 11a, the bottle opener 1 is prevented from moving in the bottle direction during the subsequent opening operation. Further, since the rough surface 5 of the engaging claw on the distal end side is in contact with the lower end of the crown peripheral wall portion 11b, the bottle opener 1 is prevented from moving in the bottle direction during the opening operation due to friction. When the opening operation is performed, the crown 11 is deformed, so that the rough surface 5 of the engagement claw on the rear end side comes into contact with the crown top surface 11a, and the uneven portions on both sides of the engagement claw on the rear end side. Bites into the top or peripheral wall of the crown and generates a large frictional force, preventing the bottle opener 1 from moving in the bottle direction.

The concavo-convex portion 7 does not necessarily need to be in contact with the crown in the state where the bottle opener shown in FIGS. 4 and 7 is applied to the crown. If it is.

The width W _{1 in} the vertical direction of the opening 3 is preferably 15 to 20 mm, and the width W _{2 in the} horizontal direction is preferably 26 to 28 mm.

The inclination angles θ ₁ and θ ₂ of the inclined surfaces of the engaging claws 4 are preferably 10 ° to 20 °. Moreover, it is preferable that the use on the front and back is the same as θ ₁ = θ ₂ . The thickness t of the engagement pawl is preferably 0.9 to 1.3 mm. The length L of the engaging claw is preferably 15 to 23 mm, and the width (depth) of the engaging claw is preferably 2 to 3 mm. Similarly, it is desirable that the length and width of the engagement claws on the rear end side and the front end side are also equal. Further, the curvature radii R ₁ and R ₂ of the front end shape (concave curve) of the engagement claws on the rear end side and the front end side are made equal so that the forward opening method and the reverse opening method can be performed under the same conditions. Is preferable.

FIGS. 9 and 10 are examples of the rough surface 5 of the engaging claw, each showing a plan view on the left side and a cut end surface of the left arrow portion on the right side. In FIG. 9, a large number of circular protrusions 8 are provided on the slope of the engaging claw 4 to form a rough surface 5. In FIG. 10, a large number of pyramidal protrusions 8 are provided on the slope of the engaging claw 4 to form a rough surface 5. The preferable surface roughness of the rough surface is about 0.2 to 0.6 mm at the maximum height R _max .

[Example 2]
11 is a schematic plan view of the bottle opener 12 according to the second embodiment, FIG. 12 is a cross-sectional end view taken along the line CC and DD in FIG. 11, and FIG. 13 is a diagram illustrating a normal operation opening method using the bottle opener 12. 14 and 14 are sectional views taken along line EE in FIG.
In the figure, reference numeral 2 is a crown-extracted portion, 3 is an opening, 4 is an engaging claw, 6 is a shoulder portion, 7 is an uneven portion, 10 is a glass bottle, 11 is a crown, 11a is a top surface, 11b is a peripheral wall portion, 12 Is a bottle opener, 13 is an engaging claw, 14 is a stepped portion, and 15 is an inclined surface.

The bottle opener 12 is made of a stainless steel plate having a thickness of 2.4 mm, has a crown punched portion 2 at the tip of the handle 9, and an opening 3 is formed in the crown punched portion. The opening 3 has a vertical width W1 of 18 mm and a horizontal width W2 of 27 mm. The shape of the opening is axisymmetric with respect to the vertical and horizontal center lines.

Engaging claws 13 that are thinner than the surroundings are formed on the inner peripheral edge of the opening 3 on the front end side and rear end side. The engagement claw 13 has a concave shape when viewed from the opening side in a plan view, and a cross-sectional shape is a quadrilateral shape. The length _{L 2} of the engaging claws is 15 mm, the maximum width (depth) of 1.3 mm, the thickness t of the tip portion is 1.2 mm. The front end shape of the engaging claw 13 in plan view is a concave curve having a curvature radius of 25 mm on both the rear end side and the front end side.
A stepped portion 14 having a concave curved shape in plan view is formed on the proximal end side of the engaging claw 13, and when opening, when the engaging claw 13 is engaged with the lower end of the crown peripheral wall portion 11 b, the stepped portion 14 becomes the crown peripheral wall. It contacts the part 11b (FIGS. 13 and 14). The step portion 14 has a radius of curvature of 13 mm, which is smaller than the radius of curvature of the engagement pawl 13 tip.

In the outer peripheral region of the engaging claw 13, an inclined surface 15 that is inclined downward toward the opening 3 is formed by notching a bottle opener plate into a triangular shape. The inclined surface 15 is a rough surface similar to the rough surface 5 of the first embodiment. The outer sides of both ends in the circumferential direction of the inclined surface 15 are shoulder portions 6 that protrude from the front surface and the back surface of the inclined surface 15 to the front side or the back side because the notches are not formed. The shoulder 6 has the same effect as the shoulder of the above embodiment. That is, when one engagement claw is engaged with the crown peripheral wall lower end, the shoulder on the other side comes into contact with the crown top surface, and the shoulder bites into the crown top surface with the opening operation, The bottle opener becomes difficult to move in the bottle direction, and the engagement claw is prevented from coming into contact with the bottle mouth.

FIG. 12A shows an example in which the engaging claw 13, the stepped portion 14, and the inclined surface 15 are formed on both the front and back surfaces of the bottle opener 12. FIG. 4B shows an example in which the engaging claw 13, the stepped portion 14 and the inclined surface 15 are formed on the front surface, and the engaging claw 4 of the first embodiment is formed on the back surface. As shown in FIG. 12A, the stepped portion 14 is desirably formed on both the front surface and the back surface of the bottle opener 12.

Concave and convex portions 7 are formed on the inner circumferential surface of the engaging claw 13 on the outer circumferential side and on the outer circumferential surface of the inclined surface 15. The concavo-convex part 7 contacts the crown top surface 11a and / or the peripheral wall part 11b at the time of opening. The uneven portion in the present embodiment may be the same as the uneven portion in the first embodiment, and exhibits the same effect.

13 and 14 show opening by a normal operation opening method using the bottle opener 12, and the engagement claw 13 on the rear end side of the bottle opener 12 is inserted into the lower end of the crown peripheral wall portion 11b as an action point, In this state, the inclined surface 15 or the engaging claw 4 on the back side is brought into contact with the crown top surface 11a to serve as a fulcrum. At this time, since the step 14 on the rear end side is in contact with the lower end of the crown peripheral wall 11b, the bottle opener 12 is prevented from moving in the bottle direction during the subsequent opening operation. Further, the shoulder 6 on the tip side comes into contact with the crown top surface. Since the crown 11 is deformed during the opening operation, the inclined surface 15 on the front end side or the rough surface of the engaging claw 4 comes into strong contact with the crown top surface 11a, and the bottle opener 12 in the bottle direction is caused by this frictional resistance. It is prevented from moving. Further, the concave and convex portions 7 on both sides of the engaging claw 13 on the distal end side bite into the top surface or the peripheral wall portion of the crown, and a large frictional resistance is generated, thereby preventing the bottle opener 12 from moving in the bottle direction.

In the reverse operation opening method, the engagement claw, the stepped portion, the inclined surface, the shoulder portion, and the concavo-convex portion act in the same manner as in the normal operation opening method by simply switching the front end side and the rear end side. The movement in the bottle direction is prevented.

In this embodiment, the shape and size of the opening may be the same as in the first embodiment.
The length _{L 2} of the engaging claws 13 are 14 ~ 16 mm, the maximum width (D) is 1.2 ~ 1.5 mm, the thickness t of the distal end portion is suitably 0.9 ~ 1.3 mm. Moreover, the cross-sectional shape of the engaging claw may be trapezoidal.
In this embodiment, the appropriate length, width (depth), radius of curvature of the tip, thickness of the tip, the angle of inclination, and the state of the rough surface of the inclined surface 15 are the same as those of the engaging claw 4 of the first embodiment. .

Claims

In a bottle opener having a crown opening with an opening at the tip of the handle,
An engagement claw is provided on the inner peripheral edge on the front end side and rear end side of the opening,
The engaging claw has a tapered shape in which the tip shape in plan view is a concave curve shape, and the cross-sectional shape is cut out in a triangular shape on both the front and back sides,
The outer sides of both ends in the circumferential direction of the engaging claw are shoulders that protrude from the front and back surfaces of the engaging claw to the front side or the back side by not being cut out,
A bottle opener characterized in that when one of the engaging claws is engaged with the lower end of the crown peripheral wall at the time of opening, the shoulder on the outer side of the other engaging claw contacts the crown top surface.
In a bottle opener having a crown opening with an opening at the tip of the handle,
An engagement claw is provided on the inner peripheral edge on the front end side and rear end side of the opening,
The engaging claw has a tapered shape in which the tip shape in plan view is a concave curve shape, and the cross-sectional shape is cut out in a triangular shape on both the front and back sides,
Concave and convex portions are formed on the inner peripheral surface on the outer side of both ends in the circumferential direction of the engaging claw,
The bottle opener, wherein the crown top surface and / or the peripheral wall portion contacts the uneven portion when opening.
In a bottle opener having a crown opening with an opening at the tip of the handle,
An engagement claw is provided on the inner peripheral edge on the front end side and rear end side of the opening,
The engaging claw has a tapered shape in which the tip shape in plan view is a concave curve shape, and the cross-sectional shape is cut out in a triangular shape on both the front and back sides,
A bottle opener characterized in that the front and back surfaces of the engaging claws are rough.
The bottle opener according to claim 1, wherein an uneven portion is formed on the outer peripheral surface of both ends in the circumferential direction of the engaging claw, and the crown top surface and / or the peripheral wall portion contacts the uneven portion when the cap is opened.
The bottle opener according to claim 1, 2, or 4, wherein the front and back surfaces of the engaging claws are rough.
The bottle opener according to any one of claims 1 to 5, wherein the front end shape of the engaging claw is a concave curve having a curvature radius of 22 to 27 mm.
In a bottle opener having a crown opening with an opening at the tip of the handle,
Provided with engaging claws thinner than the periphery on the inner peripheral edge on the front end side and rear end side of the opening,
The engaging claw has a concave curved shape at the distal end in a plan view, and a stepped portion having a concave curved shape in a planar view is formed on the proximal end side of the engaging claw. The bottle opener characterized in that the stepped portion comes into contact with the lower end of the crown peripheral wall when engaged.
The bottle opener according to claim 7, wherein an inclined surface inclined downward toward the opening is formed in an outer peripheral region of the engaging claw.
The bottle opener according to claim 8, wherein the inclined surface is a rough surface.
A shoulder portion is formed on the outer side of both ends of the inclined surface in the circumferential direction so as to protrude from the front and back surfaces of the inclined surface to the front side or the back side, and when the plug is opened, one of the engaging claws is engaged with the lower end of the crown peripheral wall portion 10. The bottle opener according to claim 8 or 9, wherein the shoulder on the other side comes into contact with the crown top surface.
11. The bottle opener according to any one of claims 7 to 10, wherein a concave and convex portion is formed on an inner peripheral surface on the outer circumferential side of the engaging claw, and the crown top surface and / or the peripheral wall portion contacts the concave and convex portion when the cap is opened.
The bottle opener according to any one of claims 7 to 11, wherein the front end shape of the engaging claw is a concave curve having a curvature radius of 22 to 27 mm.
The bottle opener according to any one of claims 7 to 12, wherein the step portion is a concave curve in a plan view with a radius of curvature of 12.5 to 13.5 mm.