JP3008403U - Bottle lid opener - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a tool that can easily open a bottle lid that is fixed by fixing the bottle lid and rotating the bottle body. A member such as a fixed arm and a swing arm having two side faces that form a predetermined acute angle and are radially opposed to each other is provided with a holding surface portion capable of abutting on the outer peripheral surface of the bottle lid and holding it. A sandwiching projection such as a sawtooth is disposed on the sandwiching surface portion of. Then, the bottle lid is clamped in a fixed state, and the bottle body is allowed to rotate in this state, and as a result, the bottle lid is opened. In addition, a slide arm that can change the distance with respect to the fixed arm while maintaining a predetermined angle is provided, and a sandwiching projection such as a sawtooth shape is formed on either one of the facing surfaces of both arms. Further, the two arms are made to stand up from the mounting surface via the link mechanism.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to a tool that allows a screw-in type bottle lid to be easily opened with a one-touch operation only by fixing the bottle lid and gripping and rotating the body portion of the bottle.

[0002]

[Prior art]

 For example, it is common to leave the bottle unused for a long time, and when trying to open the bottle lid for reuse, the bottle lid remains tightly closed and must be discarded. Sometimes it becomes unnecessary. Therefore, it was sometimes necessary to completely waste the contents of the bottle.

[0003] Such a fixed state in which the bottle lid cannot be opened is a case where a high temperature object immediately after cooking is put in the bottle and the lid is closed, and the lid is opened in a cold state, and When the lid is closed when the temperature is high and the bottle lid is to be opened when the temperature is low (including when opening the bottle lid placed in the refrigerator), the air pressure inside the bottle may drop. It is a phenomenon that occurs on a daily basis and can occur extremely easily. In addition, the bottle lid may stick even when a highly sticky substance is put in the contents of the bottle.

[0004]

[Problems to be solved by the device]

 In the past, there is no special way to solve the case where the bottle lid is stuck, as described above.Therefore, have a person with strong grip and strength open the bottle lid, or use a pipe wrench or the like. It can be opened by using a tool or a pin-shaped opener, or by opening the bottle lid in a state where it is easier to open by warming the entire bottle with hot water to heat and expand the inside to increase the internal pressure. The method was taken.

However, with such a solution, it is not possible to open the bottle lid by one's own hands unless a person with strong grip and arm strength is nearby or there is no tool or the like. In addition, the method of heating the entire bottle is extremely time-consuming, and there is an inconvenience that work such as cooking is interrupted and the contents of the bottle cannot be taken out immediately.

Further, when the content of the bottle is liquid, if the bottle lid is forcibly opened, the content may scatter around due to the recoil when the bottle is opened, and clothes or the floor may be soiled. In addition, in the case of drugs, it was even dangerous.

[0007]

[Means for Solving the Problems]

 The present invention has been made in view of the above-mentioned problems in the related art, and is an improvement of the above. It is a tool that can easily open a bottle lid fixed by fixing the bottle lid and rotating the bottle body. Is intended to be provided.

The means of claim 1 adopted by the present invention to solve the above-mentioned problems is a fixed arm attached to the inner surface of a door of a kitting cabinet and one end side of the fixed arm. As a starting point, it has a swinging arm that can be opened and closed within a predetermined angle range, and a holding surface portion that abuts on the outer peripheral surface of the bottle lid and holds it is formed on the inner peripheral surface side of both arms. The bottle lid opening tool is characterized in that a sandwiching projection such as a sawtooth shape is formed on one of the sandwiching surface portions.

The means of claim 2 adopted by the present invention is characterized in that the fixed arm and the swing arm are connected by a connecting member such as a chain, and a maximum angle is set. Item 1 is a bottle lid opening tool.

Further, according to a third aspect of the present invention, the fixed arm and the swing arm have surfaces to be joined to each other when not in use, and a fastener such as a hook-and-loop fastener or a hook is provided between the joined surfaces. The bottle lid opening tool according to claim 1 or 2, wherein a stopper is attached.

Still further, the means of claim 4 adopted by the present invention is such that the fixed arm, one or more parallel guides provided on the fixed arm, and the guide are engaged with the fixed arm. It consists of a slide arm that can change the distance while keeping a predetermined angle with respect to the arm, and a sandwiching protrusion such as a saw tooth is formed on either the fixed arm or the facing surface of the slide arm. It is a bottle lid opening tool characterized in that.

According to a fifth aspect of the present invention, there is provided a swing arm pivotally mounted on a wall surface and the like, and one end side of the swing arm is swingable in the middle of the swing arm within a predetermined angle range. It consists of an undulating arm that is pivotally attached freely, and pivotally attached at the other end to a wall or the like via a link. One of the opposing faces of the swing arm or the undulating arm is serrated. The opening tool of the bottle lid is characterized in that the holding projection of is formed.

The means of claim 6 adopted by the present invention is characterized in that, when the swing arm is in close contact with a wall surface or the like, the undulating arm is housed in the swing arm in a stacked manner. The opening tool for a bottle lid according to claim 5.

The means of claim 7 adopted by the present invention comprises two swinging arms pivotally attached to a wall surface and the like, and one of the facing surfaces of both arms is serrated. An opening tool for a bottle lid, which is characterized in that a sandwiching projection such as is formed.

[0015]

[Action]

 According to the means of claim 1 of the present invention, the holding surface portion for holding the outer peripheral surface of the bottle lid is provided on the fixed arm and the swinging arm which can be opened and closed with one end as a starting point. At the time of use, both arms can be folded and stored, and at the time of use, the swing arm can be opened to open the bottle lid. Moreover, a sandwiching projection having a serrated shape is provided on either one of the sandwiching surface portions.

In order to open the bottle lid, first, the bottle body is grasped by one hand, and the bottle lid is pressed against the holding surface portions of the two opposing sides of the fixed arm and the swing arm. Then, when the bottle body is twisted in this state, the rotation of the bottle lid is restricted by the saw-toothed sandwiching projections, so that only the bottle body rotates, and as a result, the bottle lid is opened. To be done. Thus, the opening of the bottle lid can be performed with one hand. In the past, it was necessary to grasp the bottle body with one hand and to pull the bottle lid with the other hand to rotate the bottle lid, which required both hands.

Further, when the bottle lid is fixed, in the present invention, it is possible to obtain a large force for opening the bottle lid by grasping the bottle body with both hands and rotating the bottle body. In the conventional case this is not possible. Furthermore, when opening the bottle lid, the bottle body usually has an outer diameter much larger than the bottle lid, and a small force is sufficient to rotate the bottle body with respect to the bottle lid.

According to the second aspect of the present invention, the fixed arm and the swing arm are connected by a connecting member such as a chain. When the swing arm is opened during use, the maximum opening angle of the swing arm is set by the connecting member. Therefore, it is not necessary to grasp the swing arm during use.

Further, according to the means of claim 3 of the present invention, the fixed arm and the swing arm have surfaces to be joined to each other when not in use, and a surface fastener, a hook or the like is provided between both the joined surfaces. Since the locking member is attached, the rocking arm does not slip away from the fixed arm when not in use, and does not interfere with kitchen users.

Further, according to the means of claim 4 of the present invention, the slide arm which can be moved toward and away from the fixed arm while maintaining a predetermined angle and the distance can be changed through the guide. It is installed. Further, a sawtooth-shaped holding projection is formed on either one of both arms. Therefore, by sliding the slide arm, the size of the bottle lid can be adjusted, and as a result, the dimensions of the fixed arm and the slide arm can be shortened, and the size can be greatly reduced.

According to the means of claim 5 of the present invention, it is rotatable within a range of a predetermined angle, and a saw-toothed sandwiching projection is formed on either one of the facing surfaces of both arms. The swing arm and the undulating arm can stand up from a wall surface or the like via a so-called link mechanism. Therefore, when opening the bottle lid by sandwiching it between both arms, a sufficient space can be secured with the wall surface, and the bottle lid should be opened even if the bottle body is quite large. Is possible.

Further, according to the means of claim 6, the undulating arm can be housed by stacking it inside the oscillating arm, and when not in use, only the oscillating arm can be intimately attached to the wall surface or the like and can be confirmed from the outside. Is compact and has a good appearance.

Further, according to the means of claim 7 of the present invention, a saw-toothed holding projection is formed on either one of the facing surfaces of the two swing arms to rotate both arms. The bottle lid can be clamped between both arms and opened at any pivot position.

[0024]

【Example】

 The structure of the present invention will be described below with reference to the embodiments shown in the drawings. 1 to 4 relate to the embodiment of claim 1 applied to a kitchen cabinet 1. FIG. 1 is a perspective view showing the use of the bottle lid opening tool 2, and FIG. FIG. 4 is a side view showing the use state, FIG. 3 is a perspective view showing a state in which the bottle lid opening tool 2 is attached to the kitchen cabinet 1, and FIG. 4 is an exploded perspective view of the bottle lid opening tool 2.

As shown in these drawings, the bottle lid opening tool 2 is composed of a fixed arm 3 and a swing arm 4, and the fixed arm 3 is fixed to the inner surface side of the door 5 of the kitchen cabinet 1 with screws 6 or the like. ing. The swing arm 4 is pivotally attached to one end of the fixed arm 3 via a pin 7.

The two arms 3 and 4 are connected by a connecting member 8 such as a steel wire, a string, a chain, a joint link, etc., and the opening of the swing arm 4 with respect to the fixed arm 3 does not exceed a predetermined angle. Is set. The maximum angle may be an acute angle, but about 60 degrees is optimal.

The inner peripheral surfaces of the fixed arm 3 and the swing arm 4 are sandwiching surfaces 11 and 12 that contact the lid 10 of the bottle 9 and sandwich it. Then, a sawtooth-shaped holding projection 13 is attached to the holding surface 11 of the fixed arm 3. In this case, the sandwiching projection 13 has saw teeth formed in two rows, and the acute tooth surfaces of the saw teeth are set so as to flutter toward the pivotal portions of both arms 3 and 4.

Further, as best shown in the exploded perspective view of FIG. 4, eaves for restricting inadvertent upward movement of the bottle lid 10 are provided on the upper portions of the clamping surfaces 11 and 12, respectively. It has been done. By inserting the main body of the bottle 9 while applying the upper end surface of the bottle lid 10 to the eaves portion, it is possible to align the bottle lid 10 with the serrated holding projection 13 in an optimal vertical position. At the same time, this eaves also plays the role of reinforcing the bending strength.

Further, although not shown, a locking member such as a surface fastener or a hook member is attached to a surface where the fixed arm 3 and the swing arm 4 overlap with each other or a joint surface facing each other, which is not shown in FIG. The swinging arm 4 is designed so as not to dangle from the fixed arm 3 unintentionally.

Next, a usage mode of the bottle lid opening tool 2 configured as described above will be described. First, in the non-use state, as shown in FIG. 2, the swing arm 4 overlaps with the fixed arm 3 while being fitted on the fixed arm 3 and is integrated by a surface fastener or the like. At the time of use, the door 5 of the kitchen cabinet 1 is opened, and subsequently, the engagement of the surface fastener or the like between the fixed arm 3 and the swing arm 4 is released, so that the swing arm 4 is brought into a free state. Then, the swing arm 4 is opened as shown in FIGS.

Next, the main body of the bottle 9 is grasped by one hand, and the bottle lid 10 is inserted between the holding surfaces 11 and 12 of the fixed arm 3 and the swinging arm 4 to insert the bottle lid 10 into the bottle lid 10. The outer peripheral surface is joined to the holding projections 13 and the holding surface 12 provided on the holding surfaces 11 of both arms 3 and 4. This can be done simply by moving the bottle lid 10 towards the pivot pin 7, which is the pivotal support of both arms 3 and 4. After that, when the main body of the bottle 9 is rotated clockwise as viewed from above, the bottle lid 10 is clamped by the sawtooth-shaped clamping projection 13 and the clamping surface 12, and the rotation is restricted. , Only the main body of the bottle 9 rotates, and as a result, the bottle lid 10 is opened.

As described above, the opening of the bottle lid 10 can be performed with one hand. Incidentally, conventionally, it was necessary to grasp the main body of the bottle 9 with one hand and to pinch the bottle lid 10 with the other hand to rotate the bottle lid 10, so that both hands were always required. On the other hand, in the case where the bottle lid 10 is fixed, in this embodiment, the body portion of the bottle 9 is grasped by both hands and rotated, and the bottle lid 10 is opened with both hands to open. However, in the conventional case, one hand must hold the body of the bottle 9 and the other one hand must open the bottle lid 10. In some cases, the force could not be applied to open the lid 10, and the bottle lid 10 could not be opened at the time of fixing.

Further, the opening of the bottle lid 10 is generally set to be considerably larger in the main body portion of the bottle 9 than in the portion of the spout where the bottle lid 10 is mounted. Therefore, it is possible to obtain the turning power for, and it is possible to open the bottle lid 10 that is easily fixed even for women and girls, old people, and children with poor strength.

FIG. 5 shows another mounting mode of the bottle lid opening tool 2 according to claim 1 of the present invention. The bottle lid opening tool 2 is attached to the inner surface of the door 15 of the upper cabinet 14 of the system kitchen. The configuration, operation and effect, usage mode, etc. of the bottle lid opening tool 2 are the same as those in the embodiment shown in FIGS. 1 to 4.

6 and 7 show a bottle lid opening tool 16 according to claim 4 of the present invention. FIG. 6 is a perspective view showing the whole, and FIG. 7 is a relationship between a slide arm 17 and a guide 18. It is a longitudinal cross-sectional view showing the relationship.

As shown in the figure, in this embodiment, two parallel guides 18, 18 are integrally formed on a fixed arm 19 provided with a sandwiching projection 13 having a sawtooth shape or the like. . The guides 18, 18 are formed in a dovetail cross section. On the other hand, the slide arm 17 is attached to the guides 18, 18 via a dovetail groove 20 so that the slide arm 17 can approach or separate from the fixed arm 19 while maintaining a predetermined angle, or can change the distance. ing. On the lower surface side of the slide arm 17, a set screw 21 is screwed as a stopper for removing a gap between the slide arm 17 and the guides 18 and 18 and preventing the slide arm 17 from sliding unintentionally.

With the bottle lid opening tool 16 as described above, the distance between the slide arm 17 and the fixed arm 19 may be changed according to the size of the bottle lid 10, and as a result, both arms can be used. The length dimension of 17 and 19 can be shortened, and the bottle lid 10 can be sufficiently opened even if the length is 3 to 5 cm. The procedure for opening the bottle lid 10 and its function and effect are the same as in the case of the embodiment shown in FIGS. 1 to 4 described above.

By the way, in the case of the bottle lid opening tool 16 shown in FIGS. 6 and 7, since the slide arm 17 is obliquely attached to the guides 18 and 18, the bottle lid 10 is pressed against the slide arm 17. In this case, a force having a vector component in the direction perpendicular to the guides 18, 18 acts on the slide arm 17.

Therefore, for example, by arranging a file-like member on the front contact surface of the slide arm 17 and the front contact surfaces of the guides 18 and 18 in FIG. 6, or by using a material having a large friction coefficient, The slide arm 17 can be fixed and the stop screw 21 can be omitted.

On the other hand, the surfaces on the opposite sides are conversely designed so that the friction is small, so that when the size of the bottle lid 10 is changed, it is possible to freely apply a pulling force to the front side. It is possible to move the slide arm 17 to the front. It is also possible to omit the set screw by pressing a stopper using a spring or the like against a friction surface having a similar structure. Further, the fixed arm 19 and the guides 18, 18 of the bottle lid opening tool 16 may have their upper surfaces attached to the ceiling surface of the cabinet or the like, or the right side surface of the fixed arm 19 may be attached to the wall surface or the like, and the guide 18 , 18 may be attached to another facing wall surface or the like via a bracket or the like.

FIG. 8 shows a bottle lid opening tool 22 according to claim 5 of the present invention. The bottle lid opening / closing tool 22 includes a swing arm 23 pivotally attached to a wall surface and the like; The link 24 connects the other end of the arm 24 to a wall surface or the like. The link 25 is for forming a parallelogram link with the link 25, the swing arm 23, the undulating arm 24, and the wall surface. The root portion of the swing arm 23 and the root portion of the link 25 are connected to each other. And may be integrally connected in advance through another member. Eaves for restricting the movement of the bottle lid 10 to the upper side are formed on the upper portions of both arms 23 and 24. Opposing surfaces 26 and 27 of both arms are sandwiching surfaces of the bottle lid 10, and one of them (sandwiching surface 27 in the drawing) has two sawtooth-shaped sandwiching projections 13 arranged vertically. Has been done.

When not in use, the undulating arm 24 and the link 25 are housed in the eaves of the swing arm 23, and the swing arm 23 exists in a state of being in close contact with the wall surface. Thus, when the swing arm 23 is taken out during use, the undulating arm 24 also rises from the wall surface or the like and forms a space having the same size as the link 25 between the wall and the like. This space is to prevent the main body of the bottle from contacting and interfering with the wall even when opening the lid of a large bottle. The basic operation and effect of opening the bottle lid 10 are the same as those in the above-described embodiments.

Further, FIG. 9 shows a bottle lid opening tool 28 according to claim 7 of the present invention. In this bottle lid opening tool 28, a base 29 is attached to a wall surface or the like, and one end sides of two swing arms 30 and 31 are rotatably attached to the base 29. As in the case of the embodiment shown in FIG. 8, the eaves are formed on the upper side of both arms and the facing surfaces are the holding surfaces of the bottle lid.

In this embodiment, it is possible to open the bottle lid at a position separated from the wall surface by the size of the base 29. Further, when housed, the inner swing arm 31 is set within the eaves of the outer swing arm 30. In the case of this embodiment as well, the basic operation and effect of opening the bottle lid 10 are the same as those in the above-mentioned embodiments.

By the way, the present invention is not limited to the above-mentioned embodiment, and for example, the bottle lid opening tool 2 may be attached to a wall surface of a kitchen or the like, or to the bottom surface of the kitchen table. It may be provided, or may be the lower surface of the upper cabinet 14 shown in FIG. 5, and can be installed at any position with respect to any member in any place including parts other than the kitchen. .

In addition, the external forms of the fixed arm 3 and the swing arm 4 do not have to be limited to those of the above-described embodiments. Further, the technology for pivotally supporting the fixed arm 3 and the swing arm 4 in a freely openable and closable manner and the mechanism for setting the angle so that the swing arm 4 is not opened more than a predetermined angle with respect to the fixed arm 3 can be appropriately changed. is there.

Further, in the bottle lid opening tool 16 according to the fourth aspect, the guides 18, 18 may be round bar-shaped, plate-shaped stays or the like. In this case, if a member having a high coefficient of friction is applied or adhered to the sliding surface with the slide arm 17, members such as a stopper can be omitted, which is convenient.

Furthermore, in the fixed arm 3 of the embodiment of claim 1 shown in FIGS. 1 to 4, the surface on which the sawtooth-shaped holding projection 13 is attached has a cabinet door 5 or the like as shown in FIG. It is also possible to increase the depth dimension so that it is separated from the mounting surface by a predetermined dimension. This depth dimension may be set according to the size of the target bottle and the like.

[0049]

[Effect of device]

 As described above, according to the means of claims 1 to 3 of the present invention, the two side surfaces that form a predetermined acute angle and are radially opposed to each other are brought into contact with the outer peripheral surface of the bottle lid so that the bottle can be held. As a surface part, and a sandwiching projection such as a sawtooth is provided on either one of the sandwiching surface parts, the bottle body is grasped with one hand, and the bottle lid is twisted while being pressed against the sandwiching surface portions on the two opposite sides. Then, the rotation of the bottle lid is restrained by the sandwiching projection such as the saw tooth shape, and only the bottle main body is rotated, and as a result, the bottle lid is opened.

As described above, the bottle lid can be opened with one hand. In the past, it was necessary to grasp the body of the bottle with one hand and to rotate the bottle lid by grasping the bottle lid with the other hand, which required both hands. On the other hand, when the bottle lid is stuck, in the present invention, a large force is applied with both hands to open the bottle lid by grasping the body of the bottle with both hands and rotating it. However, in the conventional case, one hand must grasp the body of the bottle and the other one hand must open the bottle lid, and both hands must open the bottle lid. As a result, it was not possible to apply force, and in some cases the bottle lid could not be opened when stuck.

The outer diameter of the bottle body is usually much larger than that of the bottle lid, and a small force is sufficient to rotate the bottle body with respect to the bottle lid. In other words, it is possible to easily open the bottle cap that has been stuck, even for women and women who have no physical strength or children.

Further, in the means of claim 4 of the present invention, a slide arm that can be moved toward and away from the fixed arm while maintaining a predetermined angle is attached, and the opposing surfaces of both arms are attached to the bottle lid. Since it is a holding surface, the size of the bottle lid can be adjusted by moving the slide arm with respect to the fixed arm, and the length of both arms can be significantly shortened. Therefore, it can be attached to an extremely narrow area, and its versatility is expanded.

Further, according to the means of claims 5 to 7 of the present invention, when the two arms are stored, they are housed in a state in which they are overlapped with each other, and when they are used, they are separated by a predetermined distance from the wall surface. The bottle body can be taken out of the container, and the bottle body does not interfere with the wall surface when the bottle lid is opened, making it possible to handle bottles of all sizes.

[Brief description of drawings]

FIG. 1 is a perspective view showing the bottle lid opening tool according to claim 1 of the present invention when in use.

FIG. 2 is a side view showing the bottle lid opening tool according to claim 1 of the present invention when not in use.

FIG. 3 is a perspective view showing an attached state of the bottle lid opening tool according to claim 1 of the present invention.

FIG. 4 is an exploded perspective view of the bottle lid opening tool according to claim 1 of the present invention.

FIG. 5 is a perspective view showing another attachment state of the bottle lid opening tool according to claim 1 of the present invention.

FIG. 6 is a perspective view showing an attached state of a bottle lid opening tool according to claim 4 of the present invention.

FIG. 7 is a longitudinal sectional view showing an engagement relationship between a guide and a slide arm of the bottle lid opening tool according to claim 4 of the present invention.

FIG. 8 is a perspective view showing an attached state of a bottle lid opening tool according to claim 5 of the present invention.

FIG. 9 is a perspective view showing an attached state of the bottle lid opening tool according to claim 7 of the present invention.

FIG. 10 is a perspective view showing still another embodiment of the bottle lid opening tool according to claim 1 of the present invention.

[Explanation of symbols]

2 ... Bottle lid opening tool 3 ... Fixed arm 4 ... Swing arm 5 ... Door 8 ... Connecting member 9 ... Bottle 10 ... Bottle lid 11 ... Clamping surface portion 12 ... Clamping surface portion 13 ... Sawtooth-shaped clamping protrusion 16 ... Bottle lid opening Tool 17 ... Slide arm 18 ... Guide 19 ... Fixed arm 22 ... Bottle lid opening tool 23 ... Swinging arm 24 ... Release arm 25 ... Link 28 ... Bottle lid opening tool 30 ... Swinging arm 31 ... Swinging arm

Claims (7)

[Scope of utility model registration request] 1. A stationary arm attached to an inner surface of a door of a kitchen cabinet and the like, and a swinging arm which is openable and closable within a predetermined angle range from one end of the stationary arm as a starting point. A bottle lid characterized in that a sandwiching surface portion is formed on the peripheral surface side for abutting against the outer peripheral surface of the bottle lid to sandwich the bottle lid, and a sandwiching projection such as a saw tooth is formed on one of the sandwiching surface portions of both arms. Opener. 2. The bottle lid according to claim 1, wherein the fixed arm and the swing arm are connected by a connecting member such as a chain or a connecting arm to set a maximum opening degree. Opening tool. 3. A fixed arm and a swing arm have surfaces to be joined to each other when not in use, and a surface fastener between both joined surfaces,
An opening member for a bottle lid according to claim 1 or 2, wherein a locking member such as a hook is attached. 4. A fixed arm, one or two or more parallel guides provided on the fixed arm, and a distance with the fixed arm held at a predetermined angle with respect to the fixed arm. An opening tool for a bottle lid, characterized by comprising a slide arm capable of changing, and a sandwiching projection such as a sawtooth shape is formed on one of the facing surfaces of the fixed arm or the slide arm. 5. A swing arm pivotally attached to a wall surface or the like, one end side pivotally attached to the middle of the swing arm within a predetermined angle range, and the other end side wall surface. It is composed of an undulating arm pivotally rotatably attached to the ridge and the like via a link, and a sandwiching protrusion such as a sawtooth shape is formed on one of the facing surfaces of the swing arm or the undulating arm. Characteristic bottle opener. 6. The bottle lid opening tool according to claim 5, wherein when the swing arm is in close contact with a wall surface or the like, the undulating arm is housed in the swing arm in a stacked manner. . 7. A swinging arm pivotally mounted on a wall surface or the like so as to be rotatable, and a sandwiching projection having a sawtooth shape or the like is formed on one of the facing surfaces of both arms. A bottle lid opener characterized by the above.