KR20080042933A - Screw caps and safety caps - Google Patents

Abstract

It is a screw cap capable of securing the required tightening torque (plug opening torque) even as a container having a plug member with a narrow diameter tip, or a safety cap having a child blocking effect that cannot be opened only by a rotation operation.

It is possible to cover the internal type cap 21 and the internal type cap 21 and to be rotatable at the same time, and to be mounted movably in a limited range, and to rotate integrally with the internal cap 21 by downward push rotation. The safety cap 20 which consists of the exterior cap 22 which became possible comprises the plug 6 which protrudes from the disc part 7 which contacts the tip of the container opening 2, and forms the plug part 8, and is comprised. In addition, a small diameter portion 21c is formed inside the middle portion of the built-in cap 21 so as to be able to contact the disc portion 7 and to regulate the clearance gap.

As a result, the small diameter portion 21c of the built-in cap 21 is brought into contact with the disc portion 7 of the plug 6, thereby restricting excess clearance to prevent excessive tightening, and providing a plug member 7 having a small diameter. Even in this case, the required tightening torque (plug opening torque) is secured, and an idling state is secured to exert a child blocking effect.

Description

Screw Caps and Safety Caps {SCREW CAP AND SAFETY CAP}

The present invention relates to a screw cap and a safety cap, and is easy to open even if a screw cap capable of securing a tightening torque (plug opening torque) necessary for a small diameter plug member, and a child or the like is opened. It's about a safety cap that doesn't. The invention relates in particular to a cap suitable as a cap of a cartridge container of methanol in a methanol fuel cell.

Some containers into which the contents can be filled may need to be sealed after the start of use, so that the shape of the container opening is changed to provide a screw cap for opening or closing the container and to facilitate taking out the contents from the container. The one which meets the condition of the state and the conditions using the same is employ | adopted, For example, by attaching a narrow plug member to the container opening part in one of the container which uses a liquid as a content, the liquid is made thin or dripping, There is something to be able to extract with certainty.

As such a container, for example, as shown in FIG. 7, the container 101 is provided with the screw part 103 in the outer periphery of the base end part of this container opening 102, and the small diameter step part ( 104 is formed, and a joining flange 105 is formed on the outer circumference thereof. On the other hand, the plug 106 attached to this container opening part 102 has a disk part 107 which contacts the front-end surface of the container opening 102, and it is outer side (upper part in figure) in the center part of the disk part 107. A small diameter cylindrical plug portion 108 for ejecting liquid is formed, and a cylindrical portion 109 protruding in the outer circumferential inner side (downward in the drawing) of the disk portion 107 is formed. Protruding flange 110 for coupling is formed at the inner peripheral end of

Then, the container opening portion (fitted to the outside of the step portion 104 so that the disc portion 107 of the plug 106 is engaged with the front end surface of the container opening 102 of the container 101 through the packing 111). The upper surface of the coupling flange 110 on the plug 106 side is attached to the lower surface of the coupling flange 105 on the 102 side.

The cap 120 for screwing and sealing the container opening 102 having such a plug 106 is formed into a cylindrical shape having a bottom portion, and the screw portions 121 and 122 are formed on the inner circumference of the cylindrical portion of the cap 120. At the same time, anti-slip longitudinal irregularities 126 are formed on the outer periphery of the cylindrical portion, and an additional sealing packing 115 is mounted inside the upper surface portion.

Such a screw cap has been generally widely adopted in the past, but depending on the contents, if it is simply opened and taken out, it may cause waste due to leakage of the contents or misuse by children, etc. In order to be able to maintain a sealed state, in addition to the operation of opening and closing a conventional screw cap, a safety cap (child blocking cap) that cannot be opened without adopting one additional operation, for example, pressing down is employed. And various forms such as Japanese Patent Application Laid-Open No. 59-12541.

In the child closing closure tool of Japanese Patent Application Laid-Open No. 59-12541, an inner cap member and an outer cap member are provided, a pulsed driving protrusion is provided on the outer circumference of the inner cap member, and a ratchet groove is provided on the top. It is provided, and the drive projection is provided in the outer periphery of an outer cap member, The leaf spring which ratchet-engages with a ratchet groove | channel is provided in upper surface inside.

By the way, in the container 101 provided with the plug 106 with a thin tip in the said screw cap, the clamping force of the cap 120 is the cap end of the plug part 108 of the plug 106. It is determined that the threaded portion 103 of the container 101 and the threaded portions 121 and 122 of the cap 120 are held up and down by the frictional force generated when the upper portion of the container 101 is in contact with the upper surface of the Since the tip of the plug portion 108 is thin, the contact area with the upper surface of the cap 120 is small, and it is easy to excessively tightly tighten the cap 120, so that the upper surface of the cap 120 with the packing 115 is outward. It is deformed so as to expand to the upper side of the drawing and the container opening 102 also has a small diameter. Therefore, the diameters of the threaded portions 103, 121, and 122 for fastening the cap 120 are small, and the threaded portions 103, 121, and 122 are small. The frictional force generated by itself) is also small, and there is a problem in that sufficient fastening force (plug opening torque) cannot be secured.

On the other hand, the mechanism for not simply opening, as described in Japanese Patent Application Laid-Open No. 59-12541, is adopted in a container opening with a relatively large diameter, so that a ratchet mechanism is provided between the top of the inner cap and the upper surface of the outer cap. The screw cap of a small diameter having a plug having a narrow tip in a container opening part has a problem that it is difficult to secure an arrangement space and to secure molding precision and cannot be applied as it is.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the prior art, and can be opened only by a screw cap and a rotational operation capable of securing the required tightening torque (plug opening torque) even in a container having a plug having a narrow diameter. The aim is to provide a safety cap with no child blocking effect.

In order to solve the problems of the prior art, the screw cap according to claim 1 of the present invention is a plug member that is attached to the container opening portion and has a narrow tip, and that is screwed into the screw portion of the container opening portion by covering the plug member and the plug. A screw cap consisting of a cap sealed at the tip of the member, wherein the plug member protrudes from a disc portion in contact with the tip of the container opening to form a plug member, while being able to contact the disc portion inside the middle of the cap. It is characterized by forming a small diameter portion for regulating the clearance gap.

According to the screw cap, a screw cap is formed of a plug member that is attached to the container opening and has a thin tip, and a cap that covers the plug member and is screwed into the screw portion of the container opening and sealed at the tip of the plug member. The plug member protrudes from the disc portion in contact with the distal end of the container opening to form a plug portion, while a small diameter portion is formed inside the middle portion of the cap to contact the disc portion and regulates the clearance. By contacting the disc portion of the plug member, the clearance gap of the cap can be regulated to prevent excessive tightening, and the necessary tightening torque (plug opening torque) can be ensured even when a plug portion having a small diameter is provided.

In addition, in addition to the structure of Claim 1, the screw cap of Claim 2 of this invention forms the said small diameter part of the said cap as a recessed part from the upper surface part of the said cap, and forms the external shape of the said cap into a cylindrical shape. Characterized in that made.

According to the screw cap, the small diameter portion of the cap is formed as a concave portion from an upper surface portion of the cap to form the outer shape of the cap in a cylindrical shape, and the small diameter portion can be formed while the outer shape of the cap is in a cylindrical shape. The thickness of each cap part is made substantially uniform, and shaping | molding is made easy.

In addition, the safety cap according to claim 3 of the present invention, in addition to the configuration according to claim 1 or 2, the cap is a built-in cap, it is possible to cover the built-in cap is rotatable and mounted to be movable in the axial direction in a limited range It consists of an outer cap and a safety cap which are integrated with the built-in cap by a push-down rotation and made rotatable at the same time, and are capable of idling only by rotation, and the clearance can be contacted with the disc inside the middle of the built-in cap. It is characterized by forming a small diameter portion.

According to this safety cap, the tip of the container is provided with a narrow plug member, which is covered with a threaded internal cap and the internal cap and is rotatably mounted in a limited range so as to be movable in an axial direction. A safety cap composed of an outer cap integrated with the inner cap to be rotatable and capable of rotating at the same time by rotating alone, wherein the plug member is formed by protruding from the disc portion contacting the tip of the container opening to form a plug portion. A small diameter portion is formed inside the middle portion of the inner surface of the plug to contact the disc and regulates the clearance. The small diameter portion of the built-in cap contacts the disc portion of the plug member to restrict the excess space of the built-in cap. It can be prevented, and it is necessary even when equipped with a plug of small diameter It is possible to secure the fastening torque (plug opening torque). Thereby, it becomes possible to ensure the idle state reliably and to exhibit the blocking effect for children.

In addition, the safety cap according to claim 4 of the present invention, in addition to the configuration according to claim 3, forms a step portion on the outside of the small diameter portion of the built-in cap, and downward on either of the step portion and the upper surface of the exterior cap. A ratchet provided with either a ratchet orthodontic portion and a ratchet toenail portion which can be integrated by pressing rotation and which rotates only by rotation, and comprises a ratchet mechanism on the other side of the stepped portion and the upper surface of the outer cap. It is characterized by including the other one of the dentition portion and the ratchet toenail portion.

According to this safety cap, a ratchet mechanism is formed on the outer side of the small diameter portion of the built-in cap, which can be integrated on the one side of the stepped portion and the upper surface of the outer cap by downward push rotation, and idles only by rotation. One of the ratchet teeth and the ratchet toe parts, and the other of the ratchet teeth and the ratchet toe parts constituting the ratchet mechanism is provided on the other of the stepped portion and the upper surface of the outer cap. By providing a step on the outside of the small diameter portion, a space can be secured, and by providing one of the ratchet teeth portion and the ratchet toenail portion constituting the ratchet mechanism in this space, it is possible to block children without large expansion of the screw cap. It is to be effective.

Moreover, the safety cap of Claim 5 of this invention is equipped with the pressurization means which can maintain an idling state between the said interior cap and the said exterior cap in addition to the structure of Claim 3 or 4. It is characterized by the above-mentioned.

According to this safety cap, it is provided with a pressurizing means capable of maintaining an idling state between the inner cap and the outer cap. For example, a pressurizing means such as a spring part is provided in a space movable in the axial direction of the inner and outer caps. It can be provided separately from a ratchet mechanism, can ensure the idling state of an exterior cap, and can exhibit the child's blocking effect more reliably.

Moreover, the safety cap of Claim 6 of this invention was formed in the lightweight structure of the ratchet teeth part which comprises the said ratchet mechanism in addition to the structure of Claim 4 or 5. It is characterized by the above-mentioned.

According to this safety cap, the ratchet teeth forming the ratchet mechanism are formed as a lightweight structure, and by forming the ratchet teeth in only the external parts required, the molding cycle by resin can be shortened by eliminating the thick portion while ensuring the function of the ratchet. I can do it.

In addition to the configuration described in any one of claims 1 to 6, the cap according to claim 7 of the present invention may be used in place of or sealing the tip of the plug member and the cap or the built-in cap, or in addition to the sealing, the plug member. And a valve mechanism for preventing leakage of the contents.

According to this cap, in place of or in addition to the sealing between the tip of the plug member and the cap or the built-in cap, the plug member is provided with a valve mechanism for preventing the leakage of contents, and the safety cap is removed. The contents can be prevented from leaking immediately, and further ease of use can be more completely prevented from leaking during storage by the sealing and valve mechanism.

In addition, the cap of Claim 8 of this invention, in addition to the structure of any one of Claims 1-7, presses a valve body and this in a closing direction between the said plug member and the demand side member which receives the content in the said container. A coupler comprising a socket having a pressurizing means, and a plug having a valve body and a pressurizing means for pressurizing it in the closing direction, the plug being detachably connected to the socket and capable of communicating by opening both valve bodies in a coupled connection state. It is characterized by including any one or the other.

According to this safety cap, between a said plug member and the demand side member which receives the content in the said container, the socket provided with a valve body and the pressurizing means which presses this in a closing direction, and a pressurizing means which pressurizes a valve body and this in a closing direction. And a coupler which is coupled and detachably coupled to the socket so as to be detachable from the socket, and which has a coupler constituted by a plug which can communicate by opening both valve bodies in a coupled connection state. By connecting and connecting through the plug, it is possible to reliably move without leaking the contents.

Moreover, the cap of Claim 9 of this invention is the container for liquid fuels in addition to the structure of any one of Claims 1-8, It is characterized by the above-mentioned.

According to this cap, the container is a container for liquid fuel, the liquid fuel can be reliably sealed, and can be reliably taken out when necessary.

Moreover, the cap of Claim 10 of this invention is the container for methanol in addition to the structure of any one of Claims 1-9, It is characterized by the above-mentioned.

According to this cap, the container is a container for methanol, for example, satisfies the necessary conditions as a methanol container for fuel of a methanol fuel cell.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partial longitudinal cross-sectional view of an assembled state of an embodiment of a threaded cap of the present invention.

2 is a plan view, front view, bottom view and longitudinal sectional view of one embodiment of the threaded cap of the present invention.

Figure 3 relates to an embodiment of the safety cap of the present invention, (a) is a partial longitudinal cross-sectional view of the idle cap of the outer cap, (b) is a partial longitudinal cross-sectional view of the integral cap of the outer cap.

4 is a plan view, a front view, a bottom view and a longitudinal sectional view of the built-in cap according to the embodiment of the safety cap of the present invention.

5 is a plan view, front view, bottom view and longitudinal sectional view of the outer cap according to the embodiment of the safety cap of the present invention.

6 is an operation explanatory diagram according to an embodiment of the safety cap of the present invention, (a) is an idle state, (b) is an integral rotation state, respectively.

7 is a partial longitudinal sectional view of a container with a plug in which the safety cap of the invention is used and a conventional cap.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

1 and 2 are related to one embodiment of the threaded cap of the present invention, Figure 1 is a partial longitudinal cross-sectional view of the assembled state, Figure 2 is a plan view, front view, bottom view and longitudinal sectional view of the cap.

As for the container provided with this screw cap 30 and being in the sealed state, the container 1 made of synthetic resin already described with reference to FIG. 7 is used, and the screw part 3 is formed in the container opening part 2, The plug 11 constituting the plug member constituting the synthetic resin plug 11 is connected to the packing 11 so that the plug 8 having a thin tip protrudes from the center of the disc 7. The coupling connection state is maintained by engaging the coupling flanges 5 and 10 on the side and the plug 6 side.

As shown in Figs. 1 and 2, the screw cap 30 provided in such a container 1 is formed in a substantially bottomed cylindrical shape made of synthetic resin so that the bottom portion becomes an upper surface, and a proximal end (on the drawing). On the inner circumference of the large-diameter cylindrical portion 31 of the lower end portion, a screw portion 32 screwed into the screw portion 3 of the container 1 is formed.

And in this screw cap 30, when the screw part 32 is fastened to the screw part 3 of the container 1, it is in the position which abuts on the upper surface of the disc part 7 of the plug 6 which comprises a plug member. In the large diameter cylindrical part 31, the small diameter cylindrical part 33 of small diameter cylindrical form is formed concentrically, and the bottom face 33a is formed.

Thereby, the threaded cap 30 is comprised by the large diameter cylindrical part 31 whose outer diameter over the full length is large diameter, and the small diameter part 33 which is small diameter cylindrical concentrically and concentrically is formed in the upper end part. It consists of a partial double cylinder, and consists of the recessed part 34 opened in the upper surface between the large diameter cylindrical part 31 and the small diameter part 33. As shown in FIG.

The outer diameter of the upper end of the screw cap 30 is not the small diameter of the small diameter portion 33, but the large diameter of the large diameter cylindrical portion 31, so that the rotational operation of the screw cap 30 is small. It is possible. And by providing the recessed part 34 in the inside of the large diameter cylindrical part 31, and forming the small diameter part 33, the thickness of each part of the screw cap 30 can be made substantially uniform, By making it easy to mold.

In addition, in this screw cap 30, a packing 15 is mounted and held inside the upper surface portion of the large-diameter cylindrical portion 31 so as to seal the plug portion 8 having a thin tip. The horizontal flange-shaped packing retaining portion 35 is formed to protrude inward, and on the outer circumference of the large-diameter cylindrical portion 31, an anti-slip portion 36 having longitudinal irregularities alternately formed around its entire circumference is formed. Formed.

In the screw cap 30 configured as described above, when the screw portion 32 of the large-diameter cylindrical portion 31 is fastened to the screw portion 3 of the container 1, the upper surface of the screw cap 30 and the plug 6 In addition to the thin plug portion 8 at the distal end of the cuff), the upper surface of the disc portion 7 of the plug 6 constituting the plug member and the small diameter portion of the threaded cap 30 are formed. When the bottom face 33a of (33) abuts, compared with the case where the screw of a cap is prevented from being inserted too much only by the contact of the thin plug part 8 with the upper surface of the conventional cap and the tip of the plug 6, By greatly expanding the contact area and making contact, it is possible to effectively prevent the screw from being excessively inserted.

Therefore, the threaded cap 30 can be reliably fastened to the threaded portion 3 of the container 1, whereby the plug opening torque (torque required for opening the threaded cap 30) can be increased, and it is simple. Can not be opened or simply loosened.

In the above embodiment, the contents to be put in the container are not specifically described, but those that need to be put in the container and kept in a sealed state, or stored in a sealed state, and need to be kept in the sealed state even after opening. The container and the contents are not limited. For example, if the screw cap of the fuel container for fuel cells or the screw cap of the methanol container which is a fuel of a methanol fuel cell is made, for example, it can be reliably sealed or resealed after opening.

In addition, although the tip of the plug 6 as a plug member and the sealing of the screw cap 30 are to be sealed through the packing 15, a projection for sealing in contact with the tip of the plug member in the screw cap instead of the packing. Alternatively, the tip end portion of the plug member may be a thin tapered surface, and other sealing means may be provided such that the tapered ring in contact with the tapered surface is integrally formed in the screw cap and sealed by contact with each other. In the case where the plug 6, which is a plug member, is provided with a valve mechanism, the sealing between the plug 6 and the threaded cap 30 can be omitted, and the two sealing functions ensure safer use or use. Can be.

As described above in detail, the screw cap 30 is a screw cap 30 of the container 1 having the plug 6 as a plug member having a slender tip in the container opening 2. The plug 6 protrudes from the disc portion 7 which is in contact with the tip of the container opening 2 to form a plug portion 8, and the disc portion 7 is formed inside the middle of the large-diameter cylindrical portion 31. Since the small diameter part 33 which forms a small diameter part 33 which can be contacted and regulates a clearance gap is formed, the small diameter part 33 is made to contact the disc part 7 of the plug 6, and the clearance gap of the threaded cap 30 is regulated. Therefore, excessive tightening can be prevented, and a necessary tightening torque (plug opening torque) can be ensured even when the plug member 7 having a small diameter is provided.

Moreover, according to this screw cap 30, the small diameter part 33 of the threaded cap 30 is made into the recessed part 34 from the upper surface part of the large diameter cylindrical part 31 of the threaded cap 30. As shown in FIG. Since the external shape of the threaded cap 30 is formed into a large diameter cylindrical shape, the small diameter portion 33 can be formed while the external shape of the threaded cap 30 is cylindrical, and the external shape is the same as a normal cap. Ease of operation can be ensured, and the thickness of each part of the screw cap 30 can be made substantially uniform to facilitate molding.

Moreover, according to this screw cap 30, even if the container 1 is used as a container for liquid fuel, and it is set as the cap, or it is set as the methanol container for fuel of a methanol fuel cell, it will satisfy | fill the necessary conditions, The sealing can be performed safely and securely, so that it can be taken out safely and securely when necessary.

In this screw cap 30, when the plug 6, which is a plug member, is used as a valve mechanism for preventing leakage of contents, the plug portion 8 is provided with a check valve. Even if removed, the contents can be prevented from leaking immediately, and the safety can be further improved to facilitate the use. And when the valve mechanism is provided in the plug 6 which is a plug member, the sealing can be simplified by omitting the sealing between the plug 6 and the threaded cap 30, and when both are provided, both It can be stored or used more safely by its sealing function.

Moreover, in this screw cap 30, the valve body and this in the closing direction between the plug part 8 of the plug 6 which is a plug member, and the demand side member which accommodates the content in the container 1 are contained. A coupler comprising a socket having a pressurizing means for pressurizing, and a plug body having a valve body and a pressurizing means for pressing the pressurizing means in a closing direction, the plug being detachably coupled to the socket and capable of communicating by opening both valve bodies in a coupled connection state. If either or the other is provided and the container 1 and the demand-side member are connected to each other via a socket and a plug, the container 1 can be reliably moved from the container 1 to the demand-side member without leaking the contents. In particular, the valve body and the socket provided with a metal coil spring as a pressurizing means to press this in a closing direction, and the valve body and a metal coil spring as a pressurizing means to press this in a closing direction, are detachably joined to a socket, A coupler comprising a plug capable of communicating by opening both valve bodies in a coupled connection state, and having a housing in which the valve body is reciprocally movable in the opening and closing direction and is sealably mounted to the proximal ends of both valve bodies. When the pressurizing means for pressurizing the valve body is accommodated and a flow path is formed outside the housing, the metal coil spring can be accommodated in the housing to prevent contact with the liquid.

Thus, even when it is necessary to prevent contact between methanol and the metal in the container 1 as in the case of a methanol fuel cell, the container 1 can be easily detached with a coupler and the screw cap 30 is removed without coming into contact with the metal (1). ) Can be supplied or withdrawn.

Next, another embodiment of the present invention will be described in detail with reference to the drawings.

3 to 6 relate to an embodiment of the safety cap of the present invention, Figure 3 (a) is a partial longitudinal cross-sectional view of the idle cap of the outer cap, (b) is a partial longitudinal cross section of the integral cap of the outer cap It is also. 4 is a plan view, front view, bottom view, and longitudinal sectional view of the interior cap; 5 is a plan view, front view, bottom view and longitudinal sectional view of the outer cap. 6 is an operation explanatory diagram, (a) shows an idle state, and (b) shows an integral state.

As for the container provided with this safety cap 20 and being in the sealed state, the container 1 made of synthetic resin already described with reference to FIG. 7 is used, the threaded part 3 is formed in the container opening part 2, and it is packed at the front-end | tip. The plug 6 constituting the plug member made of a synthetic resin is connected to the plug 11 so that the plug 8 having a thin tip protrudes from the central portion of the disc 7 so as to protrude from the container 1 side. The coupling connection state is maintained by engaging the coupling flanges 5 and 10 on the plug 6 side.

The safety cap 20 provided in such a container 1 is composed of a synthetic resin internal cap 21 and an external cap 22, and covers the plug 6 with the internal cap 21 to cover the container opening ( 2) is screwed into the threaded portion 3 of the proximal end of the base end to be sealed, and the inner cap 21 is covered with the outer cap 22 so as to be rotatable and mounted so as to be movable in the axial direction in a limited range. ) Is rotated by pressing down so as to be integrated with the built-in cap 21 so as to be rotatable, or by rotating only by the rotation of the outer cap 22, so as to function as a safety cap having a child blocking effect.

As shown in Figs. 3 and 4, the built-in cap 21 of the safety cap 20 is formed in a substantially two-stage cylindrical shape with a bottom, and the bottom portion becomes an upper surface, and a large diameter cylindrical portion at the base end portion. The plug 6 which forms a plug member when the inner cap 21 is screwed into the screw 3 of the container 1 is formed in the inner circumference of the container 21, and the internal cap 21 is fastened to the container 1. The bottom surface 21c 'of the small diameter cylindrical part 21c of the small diameter cylindrical shape is formed in the position which abuts on the upper surface of the disk part 7 of this.

As a result, when the inner cap 21 is fastened to the container 1, the upper surface of the inner cap 21 and the thin plug portion 8 at the tip of the plug 6 come into contact with each other through the packing 15. The top surface of the disc portion 7 of the plug 6 constituting the member and the bottom surface 21c 'of the small diameter portion 21c of the built-in cap 21 abut against each other, and the top surface of the conventional built-in cap 21 and the plug. Compared to the case where the tip of (6) prevents the screw of the built-in cap 21 from being excessively inserted only by the contact of the thin plug portion 8, the screw is excessively inserted by greatly expanding the contact area. Can be effectively prevented.

Therefore, the built-in cap 21 can be securely fastened to the threaded portion 3 of the container 1, so that the plug opening torque can be increased, so that the plug can not be easily opened or simply loosened.

In addition, the built-in cap 21 has a horizontal flange packing retaining portion for mounting and holding the packing 15 to seal the thin plug portion 8 at the tip of the plug 6 inside the upper surface portion. 21d) protrudes inward and is formed on the outer circumference of the lower end of the large-diameter cylindrical portion 21a, and the axial movement restricting portion 21e of the flange protrudes horizontally to regulate the movement in the axial direction of the outer cap 22. Is formed, and the skirt part 21f in which the longitudinal unevenness | corrugation was alternately formed in the whole periphery is provided below.

Moreover, in this built-in cap 21, the step part 21g is formed in the outer side of the large diameter cylindrical part 21a of two steps, and the small diameter part 21c, and is comprised by the cone surface.

The stepped portion 21g formed by the conical surface of the built-in cap 21 can be integrated with the built-in cap 21 by a rotational operation of pushing the outer cap 22 down, and idling by only the rotational operation of the outer cap 22. The ratchet teeth portion 24 of the ratchet mechanism 23 is provided with a plurality of circumferences (8 in the illustrated example) at equal intervals.

As shown in FIG. 4, the ratchet teeth 24 of the ratchet mechanism 23 are formed at equal intervals on the outer circumference of the stepped portion 21g, and the clockwise front side (the left side on the drawing) of each tooth is a stepped portion. It becomes the vertical surface 24a lower than the surface of 21g, and the clockwise rear side (right side in drawing) becomes the vertical surface 24b higher than the surface of the step part 21g, These low vertical surfaces 24a and the high vertical surface ( Although 24b is comprised by the inclined surface 24c and the substantially horizontal surface 24d, in this case, the inclined surface 24c, the horizontal surface 24d, and the high vertical surface 24b higher than the low vertical surface 24a are the ratchet teeth part ( 24) to effectively function.

In addition, the ratchet teeth portion 24 is not a solid structure made of a synthetic resin, but has a light weight structure as much as the outer shape, so that the low vertical surface 24a and the high vertical surface 24b are vertically plated, respectively, and have a low vertical surface. The upper portion of the upper surface becomes the inclined surface 24c, and the upper portion of the high vertical surface 24b becomes a part of the horizontal surface 24d, and between them is composed of another part of the horizontal surface 24d disposed only on the inner circumferential side.

By making the ratchet teeth 24 have such a light weight structure, a part of the interior cap 21 does not have a thickness portion, and the thickness can be made substantially uniform throughout the whole, so that the molding cycle at the time of resin molding is a thick portion. There is no need to make it suitable, and it can shorten and shape | mold efficiently.

In addition, by forming the ratchet teeth 24 using the stepped portion 21g of the built-in cap 21, it is not necessary to increase the height of the built-in cap 21 and can be made compact.

As shown in Figs. 3 and 5, the outer cap 22, which is covered on the outer side of the built-in cap 21, is formed into a substantially cylindrical shape having a bottom, and the bottom portion is the upper surface 22a. In order to restrict the movement in the axial direction to a certain range in the axial direction on the inner circumference of the lower end of 22b, i.e., to be integrated with the built-in cap 21 or idle, the movement restricting section 22c is provided. It is formed as a horizontal flange protruding inward, and is caught below the axial movement restricting portion 21e of the built-in cap 2l, and the upward movement is regulated. On the other hand, downward movement is regulated by abutting the upper surface 22a of the outer cap 22 against the upper surface of the inner cap 21, so that the upper and lower portions of the outer cap 22 can be moved up and down (see FIG. 3 (a)). Top position and bottom position in (b)).

In addition, the outer cap 22 is formed with an uneven slip 22d that is vertically aligned on the outer circumferential side surface of the cylindrical portion 22a.

In addition, the outer cap 22 may be integrated with the inner cap 21 by a downward push rotation operation of the outer cap 22, and the ratchet mechanism 23 may be configured to allow idle rotation only by the rotation of the outer cap 22. Is provided with a plurality of ratchet claws 25 (eight in the illustrated example) at equal intervals on the circumference.

The ratchet claw portion 25 is formed in a plate shape projecting downwardly from the upper surface 22a, and is disposed radially at equal intervals on the circumference, and the ratchet teeth portion 24 of the ratchet mechanism 23 of the built-in cap 21 is formed. It is arranged in the position opposite to). In the state where the outer cap 22 is pressed, the ratchet claw portion 25 can be positioned above the upper end of the lower vertical surface 24a of each tooth of the ratchet teeth portion 24 of the inner cap 21, The built-in cap 21 can be opened or closed by being pressed against the inclined surface 24c or the high vertical surface 24b of the ratchet teeth 24.

On the other hand, in the state which does not press down the exterior cap 22, the ratchet toe part 25 is located in the upper surface, such as the inclined surface 24c of each tooth of the ratchet teeth part 24 of the interior cap 21, and is intact. Since it slides on the inclined surface 24c even if it rotates, it will be in the idling state which is not connected with the internal cap 21. As shown in FIG.

In the container 1 sealed with such a safety cap 20, the packing 11 is attached in advance to contact the disc portion 7 inside the cylindrical portion 9 of the plug 6, and then the container 1 (2) and the coupling flange (10) of the plug (6) to the coupling flange (5) of the container (1). .

Then, the packing 15 is attached to the upper surface of the small diameter portion 21c of the built-in cap 21 of the safety cap 20, and then attached to the threaded portion 3 of the container 1 so as to be lightly screwed in.

In addition, the outer cap 22 is covered to cover the inner cap 21 until the movement limiting portion 22c of the outer cap 22 overcomes the axial movement restricting portion 21e of the inner cap 21. By pushing in, the outer cap 22 can move in a limited range in the up and down direction (axial direction) with respect to the inner cap 21, and is also rotatable concentrically with the inner cap 21.

In the case where the interior cap 21 is fastened to seal the container 1, when the exterior cap 22 is rotated clockwise while pushing in the exterior cap 22, as shown in FIG. 6B, the exterior cap 22 is closed. The ratchet claw portion 25 of the outer cap 22 is placed on the upper surface of the inclined surface 24c of the ratchet teeth portion 24 of the ratchet mechanism 23 of the stepped portion 21g of the inner cap 21 by pressing downward. The ratchet claw portion 25 contacts the high vertical surface 24b by the rotation of the outer cap 22 from the position where it is located, and transmits the rotation of the outer cap 22 to the inner cap 21 to rotate integrally. The built-in cap 21 can be fastened to the container 1.

On the contrary, when the outer cap 22 is rotated in the counterclockwise direction, the ratchet toenail 25 is strongly in contact with the inclined surface 24c of the ratchet teeth 24 and does not rise along the inclined surface 24c. The height is maintained, and the rotation of the outer cap 22 in the state of applying downward pressing force is transmitted to the inner cap 21, and rotates integrally to release the inner cap 21 from the container 1 and separate it. I can do it.

On the other hand, when the outer cap 22 is rotated counterclockwise without pressing down, and the safety cap 20 is to be removed, the ratchet teeth 24 of the ratchet mechanism 23 are shown as shown in Fig. 6A. The ratchet claws 25 are raised so as to slide on the inclined surface 24c, and the idler cap 21 is idling so that the rotation of the outer cap 22 cannot be transmitted to the inner cap 21, and the inner cap 21 is rotated so that the container 1 It is impossible to separate from). As a result, a child blocking effect can be obtained, and it is possible to prevent the safety cap 20 from being accidentally removed.

Therefore, by using such a safety cap 20, it is possible to prevent the contents of the container 1 from being leaked accidentally or the children or the like are accidentally taken out.

In addition, in the ratchet mechanism 23, when the ratchet claw portion 25 moves only along the ratchet teeth portion 24 when rotating in the idling direction, the idling torque can be approximately zero, for example Even when the plug opening torque is about 30 to 40 cN · m, the idle effect can be assured by making the idling torque approximately zero.

And in the said embodiment, although the ratchet teeth part 24 of the ratchet mechanism 23 was provided in the internal cap 21, and the ratchet claw part 25 was provided in the exterior cap 22, the ratchet mechanism was provided in reverse. You may comprise.

In addition, in the said embodiment, although the content in a container is not specifically demonstrated, what needs to be stored in the sealed state in the container, or needs to be kept in the sealed state, and needs to be sealed again after opening, etc. , Container and contents are not specified. For example, if the cap of the fuel container for fuel cells is used, it is possible to prevent the fuel from leaking accidentally or to be taken out by mistake by a child. In particular, the cap of the container for methanol, which is the fuel of a methanol fuel cell, can be prevented. If we do, we can seal safely and use.

In addition, although sealing of the tip end of the plug 6 as the plug member and the built-in cap 21 is performed by way of the packing 15, a protrusion for contacting and sealing the tip of the plug member is formed in the built-in cap instead of the packing. Alternatively, the tip portion of the plug member may be a thin tapered surface, and other sealing means may be provided, such as a taper ring integrally formed with the tapered surface in contact with the inner cap and sealed by contact with each other. In the case where the plug 6, which is a plug member, is provided with a valve mechanism, it is also possible to omit the sealing between the plug 6 and the built-in cap 21. have.

As described in detail above, according to the safety cap 20, the screw-type built-in cap 21 and the built-in cap having the container opening 2 having a plug 6 which is a plug member having a thin tip. 21) a safety cap made of an outer cap 22 which is rotatable and is mounted to be movable in an axial direction in a limited range and is integrally integrated with the inner cap 21 by a downward push rotation and is rotatable, and is capable of idling only by rotation. In (20), the plug (6) is formed by protruding from the disc portion (7) in contact with the tip of the container opening portion (2) to form a plug portion (8), and inside the middle portion of the interior cap (21). Since the small diameter part 21c which can contact the disc part 7 and regulates the clearance gap is formed, the small diameter part 21c of the built-in cap 21 is made to contact the disc part 7 of the plug 6, The excess clearance of the cap 21 can be regulated to prevent excessive tightening. At the same time, it is possible to ensure the proper tightening torque (plug opening torque) even if necessary provided with a plug member (7) of small diameter.

Moreover, according to this safety cap 20, a space can be secured by forming the step part 21g on the outer side of the small diameter part 21c of the built-in cap 21, and the ratchet mechanism 23 is comprised in this space. By providing one of the ratchet teeth part 24 and the ratchet toenail part 25 mentioned above, the mechanism 23 which can exhibit the child's blocking effect without enlarging the screw-type cap 20 can be provided. .

Moreover, according to this safety cap 20, since the ratchet teeth part 24 which comprises the ratchet mechanism 23 was formed in a lightweight structure, by setting it as the ratchet teeth part 24 only of the required external parts 24a-24d, It is possible to shorten the molding cycle by resin by removing the thick part while securing the function of the ratchet.

Moreover, according to this safety cap 20, even if the container 1 is used as a container for liquid fuel, and it is set as the cap, or it is set as the methanol container for fuel of a methanol fuel cell, it will satisfy | fill necessary conditions, It can be safely and securely sealed so that it can be taken out safely and securely when needed.

And in this safety cap 20, between the inner cap 21 and the outer cap 22, for example, either one of the upper surface of the inner cap 21 and the upper surface 22a of the outer cap 22, When the pressing means such as the spring portion is integrally formed by using the space movable in the axial direction, the outer cap 22 can be pulled apart from the built-in cap 21 by the spring portion, and the safety cap 20 By suppressing the height itself), the idling state of the outer cap 22 can be securely ensured, and the child's blocking effect can be more reliably exhibited.

In addition, in this safety cap 20, when the plug 6 which is a plug member is set as the valve mechanism which prevents the leakage of the content, and the plug part 8 is provided with the check valve, the safety cap 20 will be removed, In addition, the contents can be immediately prevented from leaking, and in addition to the child's blocking effect, safety may be further improved and ease of use.

And when the plug mechanism which is this plug member is provided with the valve mechanism, the sealing between the plug 6 and the built-in cap 21 may be abbreviate | omitted, and a mechanism may be simplified, and if the sealing is not omitted, Both sealing functions allow for safer storage and use.

Moreover, in this safety cap 20, between the valve body and the demand side member which accommodates the content in the container 1 in the plug part 8 of the plug 6 which is a plug member, it is a valve body and this in a closing direction. A socket having a pressurizing means for pressurizing, and a valve body and a pressurizing means for pressurizing it in the closing direction, the plug being detachably coupled to the socket and capable of communicating by opening both valve bodies in a coupled connection state. By providing one or the other of the couplers to be coupled to the container 1 and the demand side member through a socket and a plug, the contents can be reliably moved without leaking from the container 1 to the demand side member. In particular, the valve body and the socket provided with a metal coil spring as a pressurizing means to press this in a closing direction, and the valve body and a metal coil spring as a pressurizing means to press this in a closing direction, are detachably joined to a socket, A coupler comprising a plug that is capable of communicating by opening both valve bodies in a coupled and connected state, and having a housing in which the valve body is reciprocally moved in the opening and closing direction and sealably mounted at the proximal ends of both valve bodies. When the pressurizing means for pressurizing the valve body is accommodated and a flow path is formed outside the housing, the metal coil spring can be accommodated in the housing to prevent contact with the liquid.

Thus, even when it is necessary to prevent the contact between the methanol and the metal in the container 1 as in the case of the methanol fuel cell, the container 1 is detachably attached with a coupler and the safety cap 20 is removed without contacting the metal. ) May be supplied or taken out.

As described above, according to the threaded cap according to claim 1 of the present invention, the plug member is attached to the container opening and has a thin tip, and the screw member is inserted into the screw portion of the container opening to cover the plug member, A threaded cap consisting of a cap that is sealed, wherein the plug member protrudes from a disc portion in contact with the distal end of the container opening to form a plug member, while allowing the disc portion to be in contact with the disc portion inside the middle of the cap. Since the small diameter portion to be regulated is formed, by contacting the small diameter portion of the cap with the disc portion of the plug member, the excess clearance of the cap can be regulated to prevent excessive tightening, and the necessary tightening torque is required even when the small diameter plug member is provided. (Plug opening torque) can be secured.

Further, according to the threaded cap according to claim 2 of the present invention, since the small diameter portion of the cap is formed as a concave portion from the upper surface portion of the cap, the outer shape of the cap is formed in a cylindrical shape, and thus the outer shape of the cap is It is possible to form a small-diameter portion while having a cylindrical shape, to make the external shape the same as a normal cap, and to make the thickness of each cap approximately uniform, thereby facilitating molding.

Further, according to the safety cap according to claim 3 of the present invention, the container opening is provided with a thin plug member having a tip, and is capable of rotating by covering a threaded built-in cap and the built-in cap and moving in an axial direction in a limited range. A safety cap composed of an outer cap which is mounted and integrated with the built-in cap by downward push rotation, and which is rotatable only by rotation, and which protrudes from the disc portion contacting the tip of the container opening. And a small diameter portion which is in contact with the disc portion and regulates the clearance gap inside the middle portion of the built-in cap, and makes the small diameter portion of the built-in cap touch the disc portion of the plug member, thereby providing a clearance of the built-in cap. Regulates gaps to prevent overtightening, while at the same time Even when the lug member is provided, necessary tightening torque (plug opening torque) can be ensured.

Thereby, it is also possible to ensure the idle state reliably and to exhibit the blocking effect for children.

Further, according to the safety cap according to claim 4 of the present invention, a stepped portion is formed on the outside of the small diameter portion of the built-in cap, and the stepped portion and one of the upper surfaces of the outer cap can be integrated by downward push rotation. And one of the ratchet teeth and the ratchet claw portion constituting the ratchet mechanism which rotates only by rotation, and on the other of the stepped portion and the upper surface of the outer cap, among the ratchet teeth and ratchet claw portions constituting the ratchet mechanism. Since the other side was provided, a space can be secured by forming a stepped portion outside the small diameter portion of the built-in cap, and the screw cap is provided by providing one of the ratchet teeth and the ratchet claws that constitute the ratchet mechanism in this space. It can be provided with a mechanism capable of exhibiting a child blocking effect without greatly expanding the size.

Moreover, according to the safety cap of Claim 5 of this invention, since the pressurization means which can maintain an idling state was provided between the said inner cap and the said outer cap, the space which can move to the axial direction of an internal and external cap, for example An urging means such as a spring portion can be provided separately from the ratchet mechanism, so that the idle state of the outer cap can be securely ensured, and the child's blocking effect can be more reliably exhibited.

In addition, according to the safety cap according to claim 6 of the present invention, since the ratchet teeth forming the ratchet mechanism are formed as a lightweight structure, the ratchet teeth of the ratchet teeth of only the required external parts are secured to secure the function of the ratchet and eliminate the thick portion. The molding cycle by the resin can be shortened.

According to the cap according to claim 7 of the present invention, the plug member is provided with a valve mechanism that prevents leakage of contents in place of or in addition to the sealing of the tip of the plug member and the cap or the built-in cap. In addition, even if the safety cap is removed, the contents can be prevented from leaking immediately, and the safety can be further improved, making it easier to use, and the sealing and valve mechanism can prevent leakage during storage. have.

Moreover, according to the cap of Claim 8 of this invention, the socket provided with a valve body and the pressurizing means which presses this in a closing direction between the said plug member and the demand side member which accommodates the content in the said container, and a valve body; Since it is provided with a pressurizing means which presses this in a closing direction, and couples so that the coupler can be detachably connected with the said socket, and couples which consist of a plug which can communicate by opening both valve bodies in a coupling connection state, By jointly connecting the container and the demand side member through the socket and the plug, it is possible to reliably move without leaking the contents.

According to the cap of claim 9 of the present invention, since the container is a container for liquid fuel, the liquid fuel can be sealed safely and securely, and can be taken out safely and reliably when necessary.

In addition, according to the cap according to claim 10 of the present invention, since the container is used as a container for methanol, it is possible to satisfy the necessary conditions as a methanol container for fuel of a methanol fuel cell, for example, safely and reliably. It can be sealed so that it can be taken out safely and securely when needed.

As described above, the screw cap and the safety cap according to the present invention can secure necessary tightening torque (plug opening torque) even when a plug member having a small diameter is provided. Even if it does not open easily, it is useful as a cap of a container, and it is especially suitable as a cap of the cartridge container of methanol of a methanol fuel cell.

Claims (10)

A threaded cap comprising a plug member that is attached to a container opening and has a thin tip, and a cap that covers the plug member and is screwed into a threaded portion of the container opening, and is sealed at the tip of the plug member. The plug member is formed by protruding from a disc portion contacting the tip of the container opening to form a plug portion, and forming a small diameter portion in contact with the disc portion inside the cap and regulating a clearance. Screw cap. The method of claim 1, The small diameter part of the said cap is a screw cap formed by forming a recessed part in the upper surface part of the said cap, and forming the outer shape of the said cap into a cylindrical shape. A screw cap according to claim 1 or 2, The cap as a built-in cap, The safety cap is composed of an external cap which is rotatable by covering the internal cap and is rotatably mounted in a limited range, and is integrated with the internal cap by a downward push rotation, and rotates only by rotation. It is made by forming a small diameter portion in contact with the disc portion inside the middle portion of the built-in cap and regulates the clearance gap, Safety cap. The method of claim 3, A ratchet tooth portion which forms a stepped portion on the outside of the small diameter portion of the built-in cap, and which can be integrated with any one of the stepped portion and the upper surface of the outer cap by downward push rotation, and constitutes a ratchet mechanism for idling only by rotation; A safety cap, comprising: one of the ratchet toenails, and the other of the ratchet teeth and the ratchet toe parts forming the ratchet mechanism on the other of the stepped portion and the upper surface of the outer cap. The method according to claim 3 or 4, And a pressurizing means capable of maintaining an idling state between the inner cap and the outer cap. The method according to claim 4 or 5, The safety cap which formed the ratchet teeth part which comprises the said ratchet mechanism in a lightweight structure. The method according to any one of claims 1 to 6, Instead of or sealing the tip of the plug member and the cap or the built-in cap, or in addition to the sealing, the plug member is provided with a valve mechanism for preventing leakage of contents. The method according to any one of claims 1 to 7, A socket having a valve body and a pressurizing means for pressing the valve body in the closing direction between the plug member and the demand-side member for receiving the contents in the container, and for pressing the valve body and the valve body in the closing direction. A cap, comprising: a coupler having a pressurizing means, the coupler being detachably connected to the socket and having a coupler configured to communicate by opening both valve bodies in a coupled connection state. The method according to any one of claims 1 to 8, The cap is a container for liquid fuel. The method according to any one of claims 1 to 9, A cap, wherein the container is a container for methanol.

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