cap

Abstract

To provide a cap that ensures sufficient airtightness between the body and the lid, and can be easily opened with minimal force. [Solution] The cap 1 of this invention comprises a cap body 2 having an opening 2a, and a lid 3 connected to the cap body 2 via a hinge H1 that opens and closes the opening 2a. A knob member 4 is attached to the free end of the lid 3 so as to be swingable in a direction parallel to the opening and closing direction of the lid 3. When the knob member 4 is in a horizontal position, a gap is formed between the end face of the base end of the knob member 4 and the outer peripheral surface of the lid 3 facing the end face. When the knob member 4 swings in a direction parallel to the opening direction of the lid 3, the base end comes into contact with the outer peripheral surface or edge of the lid 3. In the state where the base end and the outer peripheral surface or edge are in contact, the distance between the tip of the knob member 4 and the rotating part of the hinge H1 is longer than the distance between the rotating part of the hinge H1 and the contact part.

Description

Technical Field

[0001] This invention relates to a cap or a cap structure. More specifically, it relates to a cap or a cap structure that can ensure sufficient sealing performance between a cap body and a lid, while allowing the lid to be easily opened with a slight force.

Background Art

[0002] Conventionally, there is a cap or a cap structure including a cap body attached to an object such as a container, and a lid body connected to the cap body via a hinge. In such a cap or cap structure, sufficient sealing performance needs to be ensured between the cap body and the lid body. Therefore, when opening the lid, an operation of pulling up the lid is required. For example, for users with weak strength, such as the elderly or those with finger disabilities, there is a problem that it is difficult to open the lid.

[0003] Therefore, an example of a cap structure that enables easy opening and closing of the lid is disclosed in Patent Document 1.

[0004] For example, in Japanese Patent Application Laid-Open No. 09-206370 (Patent Document 1), a cap that can be used for a wide range of indwelling medical devices, has a simple opening and closing operation, and excellent sealing function is proposed.

[0005] This cap is for an indwelling medical device in which a lid is connected to a connection plug body by caulking a hinge portion, The connection plug body, the hinge portion, and the lid body are integrally molded from the same synthetic resin material, An engaging member made of a flexible material is attached to the center of the inner surface of the lid body, A pull cord is attached to one end of the lid body, When the pull cord is pulled in the direction of the connecting plug body, the elastic restoring force of the hinge portion causes the cover to cover the connecting plug body, and the engaging member engages airtightly with the periphery of the outlet of the connecting plug body. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 09-206370 (Claims, Figure 1) [Overview of the project] [Problems that the invention aims to solve]

[0007] Conventional cap structures require a strong seal between the cap body and the lid to prevent leakage of liquid passing through the inside of the cap body. However, this requires a very strong force to open the lid, resulting in poor usability. In particular, it can be difficult for users with weak strength to open the cap. On the other hand, reducing the airtight seal between the cap body and the lid improves operability, but it also creates a problem where sufficient airtightness cannot be achieved, potentially leading to leakage.

[0008] The cap disclosed in Patent Document 1 is designed so that the lid securely and firmly engages with the main body of the connecting plug to prevent leakage. Therefore, when opening the cap, sufficient force is required to detach the cap from the plug body using a string. Therefore, further improvements are needed so that even elderly people or those with disabilities in their hands can easily open the bottle with minimal effort.

[0009] In view of the current situation, this invention aims to provide a cap or cap structure that can ensure sufficient airtightness between the main body (cap body) and the lid, while also allowing it to be easily opened with minimal force. [Means for solving the problem]

[0010] To achieve the above objective, the invention described in claim 1 of this invention is: The device comprises a cap body having an opening at least at its upper end, and a lid that is hinged to the cap body via a first hinge portion and opens or closes (opens and closes) the opening at the upper end of the cap body. The aforementioned cover is The free end is equipped with a long knob member of a required thickness, which is pivotably attached in a direction parallel to the opening and closing direction of the lid. The knob member is attached to the lid such that, in a horizontal position, a gap of a required size is formed between the end face of its base end and the outer circumferential surface of the lid facing the end face. The knob member is configured such that when it swings in a direction parallel to the opening direction of the lid, the base end of the knob member contacts the outer circumferential surface or edge of the lid, and in the state where the base end of the knob member contacts the outer circumferential surface or edge of the lid, the distance between the tip of the knob member and the rotating portion of the first hinge is set to be longer than the distance between the rotating portion of the first hinge and the contact portion. This cap is characterized by the following:

[0011] The invention described in claim 2 of this invention is, In the cap according to claim 1, The aforementioned knob member is, The lid is configured such that when it is rocked in a direction parallel to the opening direction, the upper edge of its base end contacts the outer circumferential surface of the lid, or the end face of its base end contacts the upper edge of the lid. It is characterized by the following:

[0012] The invention according to claim 3 of this invention is in the cap according to claim 1 or 2, wherein the knob member is hinged at its proximal end to the free end of the lid body via a second hinge portion so as to be swingable in a direction parallel to the opening direction of the lid body. This is the gist of the invention.

[0013] The invention according to claim 4 of this invention is in the cap according to claim 1 or 2, where the size of the gap is 0.1 mm or more and 1.0 mm or less. This is the gist of the invention.

[0014] The invention according to claim 5 of this invention is in the cap according to claim 1 or 2, where the knob member is formed of a long flat plate-shaped member, and the tip side thereof is curved in an arc shape convex toward the opening direction of the lid body. This is the gist of the invention.

[0015] The invention according to claim 6 of this invention is in the cap according to claim 1 or 2, where the cap body has a connection portion configured to be attachable to an opening of a conduit or a container on its lower end side. This is the gist of the invention.

[0016] The invention according to claim 7 of this invention is in the cap according to claim 6, where the connection portion is configured to be attachable to an opening of a catheter or a tube. This is the gist of the invention.

[0017] The invention according to claim 8 of this invention is in the cap according to claim 1 or 2, The aforementioned cover is It has a recess formed on its inner surface that can be fitted with the upper end of the cap body. It is characterized by the following:

[0018] The invention described in claim 9 of this invention is, In the cap according to claim 1 or 2, The aforementioned cap is The entire structure is integrally molded from a single, flexible synthetic resin material. It is characterized by the following:

[0019] The invention described in claim 10 of this invention is, The cap is provided as described in claim 1 or 2. This connector is characterized by the following: [Effects of the Invention]

[0020] The cap (or cap structure) of this invention comprises a cap body having an opening at least at its upper end, and a lid hinged to the cap body via a first hinge portion, and opening or closing the opening at the upper end of the cap body. The lid is provided with a long knob member of a required thickness attached to its free end, for example via a second hinge portion, so as to be swingable in a direction parallel to the opening and closing direction of the lid. The knob member is attached to the lid such that, in a horizontal state, a gap of a required size, for example, 0.1 mm to 1.0 mm, is formed between the end face of its base end and the outer circumferential surface of the lid facing the end face. When the knob member swings in a direction parallel to the opening direction of the lid, the base end of the knob member contacts the outer circumferential surface or edge of the lid, in particular, the upper edge of the base end of the knob member contacts the outer circumferential surface of the lid, or the end face of the base end of the knob member contacts the upper edge of the lid. In this cap, when the base end of the knob member is in contact with the outer surface or edge of the lid, the distance between the tip of the knob member, more specifically the part at which force is applied (point of force application) and the pivot point of the first hinge is set to be longer than the distance between the pivot point of the first hinge and the contact point (point of application). Therefore, the cap, by the principle of leverage, allows the lid to be opened easily with little force, while ensuring sufficient airtightness between the cap body and the lid. Therefore, even elderly people or those with disabilities in their hands or fingers, or other users with limited strength, can easily open the bottle with minimal effort.

[0021] In the cap described above, the knob member can be made of a long, flat plate-shaped member. In this case, the knob member can be formed with its tip end curved in an arc shape that is convex toward the opening direction of the lid. This configuration makes it possible for elderly people, people with disabilities in their hands, or other users with weak hands to hold the knob more securely and easily.

[0022] In the cap described above, the cap body may be configured to have a connecting portion at its lower end that can be attached to a conduit (particularly a catheter or tube) or the opening of a container. With this configuration, the cap can be attached to the opening (mouth) of a conduit such as a catheter or a container such as a bottle and used for that purpose.

[0023] In the cap described above, the lid may be configured to have a recess formed on its inner surface that can be fitted with the upper end of the cap body. With this configuration, the cap will have extremely excellent sealing properties.

[0024] The cap can be integrally molded from the same flexible synthetic resin material, preferably polypropylene resin. With this configuration, the cap offers several advantages, including: (1) improved airtightness due to the elimination of joints between components, making it easier to prevent leakage and oxidation of contents; (2) reduced manufacturing costs due to a decrease in the number of parts; (3) simplified manufacturing processes and efficient production or manufacturing due to the elimination or reduction of assembly steps; and (4) reduced waste and ease of recycling, thereby lowering the burden on the environment.

[0025] Furthermore, the aforementioned cap can be applied, for example, to connectors or adapters, particularly connectors or adapters for connecting conduits such as catheters. [Brief explanation of the drawing]

[0026] [Figure 1] This is a schematic diagram illustrating one embodiment of the cap structure according to this invention, showing the cap in an open state. [Figure 2] Figure 1 is a schematic diagram illustrating the cap structure, where (A) is a front view and (B) is a cross-sectional view taken along line A-A'. [Figure 3] Figure 1 is a schematic diagram illustrating the cap structure, where (A) is a top view, (B) is a left side view, (C) is a rear view, and (D) is a bottom view. [Figure 4] This is an explanatory diagram illustrating the mechanism for opening the cap structure shown in Figure 1. [Figure 5] Figure 1 is an explanatory diagram showing the opening operation of the cap structure. [Modes for carrying out the invention]

[0027] The cap structure according to this invention (hereinafter simply referred to as "cap") will be described in detail below based on the attached drawings. Furthermore, this invention is not limited to the disclosed embodiments, and various improvements can be made without altering its essence.

[0028] Figures 1 to 3 are schematic diagrams illustrating one embodiment of the cap according to this invention. As shown in Figures 1 to 3, the cap 1 has an overall shape that is elongated in the vertical direction and comprises a cap body 2 having an opening 2a at least at its upper end, and a lid 3 that opens or closes (or seals) this opening 2a. The cap 1 can be used, for example, by attaching it to the opening (mouth) of a conduit such as a catheter or a container such as a bottle.

[0029] In Figures 1 to 3, the cap body 2 is cylindrical, that is, the cap body 2 has an internal space S formed along the axial direction such that one end (upper end) and the other end (lower end) are in communication with each other. A tapered surface 2b is formed on the outer circumference of the upper end of the cap body 2, which decreases in diameter as it approaches the opening 2a. As will be described later, this tapered surface 2b is configured to fit (internal fit) with the fitting wall portion 3d formed on the inner surface of the lid 3. Therefore, the cap 1 has extremely excellent airtightness.

[0030] In Figures 1 to 3, the cap body 2 has an annular flange portion 2c that extends substantially horizontally radially outward along its entire circumference from a position predetermined distance below the lower edge of the tapered surface 2b, and a peripheral wall portion (first peripheral wall portion) 2d that is substantially annular in shape when viewed from above, extending vertically upward from the outer peripheral edge of the flange portion 2c along its entire circumference. The flange portion 2c is configured such that a magnet (especially an annular magnet) can be placed on its upper surface. The peripheral wall portion 2d is formed such that the tapered surface 2b protrudes above the upper edge of the peripheral wall portion 2d (in Figures 1 to 3, the upper surface of the peripheral wall portion 2d is located near the lower edge of the tapered surface 2b), and as will be described later, its upper surface abuts against the upper surface of the peripheral wall portion (second peripheral wall portion) 3b of the lid 3, thereby improving the airtightness of the cap 1.

[0031] There are no particular restrictions on the form of the cap body 2, and it can be appropriately selected according to the application and other factors. In this embodiment, the cap body 2 is configured to be used by being attached to the opening (mouth) of a conduit such as a catheter or a container such as a bottle. In Figures 1 to 3, the cap body 2 is configured to have a connecting portion 2e at its lower end (the end opposite to the end to which the lid 3 is attached) that gradually (in a stepped manner) reduces in diameter from the upper end to the lower end (away from the lid 3) in the axial direction, so that it can be attached to the opening of a conduit such as a catheter.

[0032] As shown in Figures 1 to 3, the lid 3 is capable of opening or closing (or sealing) the upper end opening 2a of the cap body 2, and is connected to the cap body 2 via a hinge portion (first hinge portion) H1 so as to be openable and closable.

[0033] In Figures 1 to 3, the lid 3 is configured to have a plan view (top view) shape and size (radial length) corresponding to the flange portion 2c of the cap body 2. In Figures 1 to 3, the lid 3 has a plan view approximately circular shape with a size similar to that of the flange portion 2c.

[0034] As shown in Figures 1 to 3, the lid 3 is configured to rotate vertically by being hinged to the cap body 2 via the hinge portion H1. In Figures 2 and 3, reference numeral 5 denotes a connecting portion that connects the cap body 2 and the lid 3, and is made of a flexible or elastically deformable member. The connecting portion 5 acts to close the lid 3 by elastic restoring force when the lid 3 is within a predetermined angular range, and when it exceeds that angular range, it causes a buckling to return the lid 3 to the fully open position.

[0035] On the inner surface 3a of the lid 3, a peripheral wall portion (second peripheral wall portion) 3b is formed, which is roughly annular in shape when viewed from above, extending vertically upward from its outer peripheral edge along the entire circumference of the outer peripheral edge (hanging down when the opening 2a is closed). The upper surface of this peripheral wall portion 3b is configured to be in contact with the upper surface of the peripheral wall portion 2d of the cap body 2. This configuration improves the airtightness of the cap 1.

[0036] In Figure 1, the lid 3 has a recess 3c of the required size and depth in the center of its inner surface 3a, and a fitting peripheral wall 3d is formed along the periphery of the opening of the recess 3c (towards the closing direction of the door body 3), consisting of a peripheral wall that is roughly annular in shape when viewed from above. The fitting peripheral wall 3d is formed in a tapered shape that decreases in diameter towards the opening of the recess 3c so that its inner surface abuts against the tapered surface 2b (outer circumference of the upper end) of the cap body 2, and is configured to be concave so that it can be fitted with the tapered surface 2b of the cap body 2. With this configuration, the cap 1 has extremely excellent airtightness. Note that in Figure 1, the upper surface of the fitting peripheral wall 3d is formed to be flush with the upper surface of the peripheral wall portion 3b.

[0037] In Figure 1, a cylindrical projection 3f is provided in the center of the recess 3c, and a space of the required size is formed around the projection 3f (between the inner surface of the recess 3c and the circumferential surface of the projection 3f). An annular member (preferably an annular member made of an elastic material; for example, a silicone member (silicone ring)) can be provided in this space so as to surround the projection 3f and to prevent leakage of the contents by contacting the opening 2a of the cap body 2 when the lid 3 is closed, thereby improving the airtightness (or airtightness). In this case, the annular member may be fixed to the lid 3 by melting and solidifying the projection 3f using ultrasonic welding or the like.

[0038] In Figures 1 to 3, the inner surface 3a of the lid 3 forms an annular recess between the fitting wall portion 3d and the peripheral wall portion 3b. On the upper surface of this annular recess and the upper surface of the flange portion 2c, a magnet (especially an annular magnet) can be placed on one side and metal on the other, or a north-pole magnet (especially an annular magnet) can be placed on one side and a south-pole magnet (especially an annular magnet) can be placed on the other. With this configuration, when the opening 2a of the cap body 2 is closed by the lid 3, the lid 3 is attracted to the cap body 2 by the magnetic force of the magnet, thereby improving the adhesion force of the lid 3 to the cap body 2.

[0039] In this invention, a knob member 4 is hinged to the free end of the lid 3, more specifically, to the end opposite to the end (one end) that is connected so as to be rotatable via the hinge portion H1, via a hinge portion (second hinge portion) H2. Specifically, the knob member 4 is swingably connected to the periphery of the other end of the lid 3 via the hinge portion H2 in a direction parallel to the opening and closing direction of the lid 3 (up and down direction in Figure 2).

[0040] As shown in Figures 1 to 3, the knob member 4 is made of a long member, and its base end is hinged (connected) to the periphery of the other end of the lid 3 via a hinge portion H2. In Figures 1 to 3, the knob member 4 is made of a long, flat plate-shaped member having the required thickness, but it is acceptable as long as it is made of a member having the required thickness, and there are no particular restrictions. Therefore, the knob member 4 may also be made of a long, rod-shaped member having the required thickness.

[0041] In Figures 1 to 3, the tip 4e of the knob member 4 is curved to exhibit a convex arc shape in the direction parallel to the opening direction of the lid 3. With this configuration, the knob member can be held more securely and easily even by users with weak strength, such as the elderly or those with disabilities in their fingers. The knob member 4 can be made of a long, flat plate-shaped member, and may be formed to extend in a straight line from the base end to the tip end.

[0042] In this invention, as shown in Figures 2 to 4, the knob member 4 is connected to the lid 3 via a hinge portion H2 such that, in a horizontal position, a gap G of a required size is formed between the end face 4a of its base end and the outer circumferential surface 3e of the lid 3 (the outer circumferential surface facing the end face 4a of the base end of the knob member 4). Therefore, when the knob member 4 is swung in a direction parallel to the opening direction of the lid 3, the base end of the knob member 4 (its upper edge in Figure 4; the corner extending along the left-right direction) comes into contact with the outer circumferential surface 3e of the lid 3 on the side facing the base end. That is, the upper edge 4b ​​of the base end of the knob member 4 constitutes a contact portion with the outer circumferential surface 3e of the lid 3 as the contact portion. In this embodiment, the size of the gap G is approximately 0.1 mm to 1.0 mm.

[0043] In Figure 4, the upper edge 4b ​​of the base end of the knob member 4 is used as the contact point with the lid 3, specifically its outer peripheral surface 3e. However, the surface (end face) 4a of the base end of the knob member 4 that faces the outer peripheral surface of the lid 3 may also be used as the contact point. In this case, the end face 4a acting as the contact point is configured to contact the upper edge (upper outer peripheral edge) of the outer peripheral surface 3e of the lid 3 that faces the end face 4a.

[0044] In Figures 1 to 3, a through-hole (first through-hole) 4c is formed in a predetermined position on the knob member 4, extending through in the thickness direction (vertical direction). This through-hole 4c is formed to correspond to an engaging projection 2f that protrudes radially outward at a predetermined position on the cap body 2, and engages with the engaging projection 2f to lock the lid 3 in a closed position.

[0045] In Figures 1 to 3, the knob member 4 is provided with a through hole (second through hole) 4d formed on its tip side so as to penetrate in the thickness direction. The aforementioned through-hole 4d allows the device to be attached to the body by passing a string-like or strip-like member (not shown) through it, and is not necessarily required to be provided.

[0046] There are no particular restrictions on the materials used to make up the cap 1 and its constituent parts; they may be made of any material. For example, the cap 1 and its constituent parts can be made of a synthetic resin material, preferably a flexible material, more preferably polypropylene resin (PP). In this case, each component may be made of a different material, or the same material may be selected for at least some of the components.

[0047] Such a cap 1 can be manufactured by various manufacturing methods. For example, the cap 1 can be manufactured by filling a predetermined mold with a synthetic resin material as the material constituting the cap 1 and curing it.

[0048] In this embodiment, the cap 1 is integrally molded from the same synthetic resin material (more specifically, a flexible synthetic resin material), specifically polypropylene resin, for the entire cap (all its constituent parts). With this configuration, • Because there are no joints between the individual components, airtightness is improved, making it easier to prevent leakage and oxidation of the contents. • The number of parts is reduced, which can lower manufacturing costs; • The assembly process is either unnecessary or reduced, thus simplifying the manufacturing process and enabling more efficient production or manufacturing; and • Waste reduction and ease of recycling can be improved, reducing the environmental burden. These effects can be obtained. The cap 1 may be manufactured separately for each of its constituent components.

[0049] With such a cap 1, when the opening 2a at one end of the cap body 2 (the upper end in Figure 1) is closed (or sealed) by the lid 3, a sealed state can be created in the cap 1, and when the lid 3 is open, it is possible to fill or supply liquid medicine or the like through the opening 2a. In particular, when the opening 2a of the cap body 2 is closed by the lid 3, when opening the opening 2a from that state, pulling the knob member 4 upward in a direction parallel to the opening direction of the lid 3 allows the opening (unplugging) to be easily performed with little force by the principle of leverage. In this embodiment, the cap body 2 constituting the cap 1 is provided with a connecting portion 2e at its other end (the lower end in Figure 1) that allows a conduit such as a catheter to be connected. Therefore, the lid 3 can be opened and closed with a conduit connected to the connecting portion 2e.

[0050] The mechanism that allows the cap 1 to be easily opened with minimal force will now be explained.

[0051] In the cap 1, as shown in Figure 4(B), when the upper edge 4b ​​of the knob member 4 is in contact with the outer peripheral surface 3e of the lid 3, or when the upper edge of the lid 3 is in contact with the end face 4a of the base end of the knob member 4, the part of the lid 3 that rotates on a hinge (rotation axis) P functions as the fulcrum, the part E on the tip 4e of the knob member 4 where force (pulling force) is applied functions as the point of application, and the part L where the base end (upper edge 4b) of the knob member 4 and the outer peripheral surface 3e of the lid 3 are in contact functions as the point of application.

[0052] In this embodiment, the distance d1 between the fulcrum and the point of effort is set to be longer than the distance d2 between the fulcrum and the point of application (d1 > d2). Therefore, the force f applied to the point of effort is amplified by the lever principle and obtained as a force F at the point of application. In this case, the relationship d1 × f = d2 × F holds true.

[0053] Therefore, when the knob member 4 is pulled upward in a direction parallel to the opening direction of the lid 3, the force applied corresponds to the force f applied at the point of application. At the point of application, due to the lever principle, the force F applied in the direction that moves the lid 3 away from the cap body 2 is amplified by d1 / d2 times. Thus, the force required to separate the lid 3 from the cap body 2, that is, to open (unseal) the lid 3, is small. Therefore, when opening the lid 3 of the cap 1 of this invention, it can be easily opened with minimal force.

[0054] Next, we will explain an example of the operation of opening (unsealing) the lid 3 of cap 1. Figure 5 is an explanatory diagram showing the opening operation of the cap 1.

[0055] In Figure 5(A), the lid 3 closes the opening 2a of the cap body 2, and the lid 3 is locked closed. Specifically, as shown in Figure 5(A), the knob member 4 is positioned to swing downward and extend along the axial direction of the cap body 2, and the lid 3 is locked closed (sealed) by the engagement of the engagement hole 4c, which is a through hole in the knob member 4, and the engagement projection 2f, which is provided at a predetermined position on the cap body 2. Therefore, the cap body 2 is sealed by the attachment or fitting of the lid 3 at its opening 2a, and is in a leak-free state.

[0056] From this state, as shown in Figure 5(B), when the knob member 4 is pulled upward in the direction parallel to the opening direction of the lid 3 (upward in Figure 5), the engagement of the engagement hole 4c of the knob member 4 with the engagement projection 2f of the cap body 2 is released, and the lock of the lid 3 is released. Note that the opening 2a remains closed by the lid 3.

[0057] Subsequently, when the knob member 4 is pulled further upward in the direction parallel to the opening direction of the lid 3 (upward in Figure 5), the upper end edge 4b ​​of the knob member 4 comes into contact with the outer circumferential surface 3e (the part to be contacted) of the lid 3, with this edge acting as the contact point (Figure 5(C)). In this state, the lid 3 can be easily separated from the cap body 2 with very little force, thanks to the principle of leverage.

[0058] Therefore, if the knob member 4 is pulled further upward in the direction parallel to the opening direction of the lid 3 (upward in Figure 5), the lid 3 will move away from the closed position of the opening 2a in the opening direction (upward in Figure 5) (Figure 5(D)).

[0059] Subsequently, if the knob member 4 is pulled further upward in a direction parallel to the opening direction of the lid 3, or if the lid 3 is pulled further upward in the opening direction, the lid 3 will reach the open position of the opening 2a, and the opening 2a will be opened (Figure 5(E)).

[0060] Thus, the lid 3 of the cap 1 can be easily opened with minimal force.

[0061] A cap with this configuration can be connected to containers or the connection points (openings) of tubes such as catheters by appropriately changing the shape of the cap body that constitutes it, depending on the application. For example, the cap can be used as a connector or adapter, particularly as a connector or adapter for connecting tubular members such as catheters. Therefore, such connectors or adapters are also included in the present invention.

[0062] [Configurations included in embodiments of the present invention] This embodiment includes the following configuration. (Configuration 1) comprising a cap body having an opening at least at its upper end, and a lid that is hinged to the cap body via a first hinge portion and opens or closes the opening at the upper end of the cap body, The aforementioned cover is The free end is equipped with a long knob member of a required thickness, which is pivotably attached in a direction parallel to the opening and closing direction of the lid. The knob member is attached to the lid such that, in a horizontal position, a gap of a required size is formed between the end face of its base end and the outer circumferential surface of the lid facing the end face. The knob member is configured such that when it swings in a direction parallel to the opening direction of the lid, the base end of the knob member contacts the outer circumferential surface or edge of the lid, and when the base end of the knob member is in contact with the outer circumferential surface or edge of the lid, the distance between the tip of the knob member and the rotating portion of the first hinge is set to be longer than the distance between the rotating portion of the first hinge and the contact portion. A cap characterized by [this feature]. (Configuration 2) The cap according to Configuration 1, wherein when the knob member is swayed in a direction parallel to the opening direction of the lid, the upper edge of its base end contacts the outer circumferential surface of the lid, or the end face of its base end contacts the upper edge of the lid. (Configuration 3) The cap according to Configuration 1 or 2, wherein the base end of the knob member is hinged to the free end of the lid via a second hinge portion so as to be able to swing in a direction parallel to the opening direction of the lid. (Configuration 4) The cap according to any one of Configurations 1 to 3, wherein the size of the gap is 0.1 mm or more and 1.0 mm or less. (Configuration 5) The cap according to any one of Configurations 1 to 4, wherein the knob member is made of a long, flat plate-shaped member, and its tip is curved in an arc shape that is convex toward the opening direction of the lid. (Configuration 6) The cap according to any one of Configurations 1 to 5, wherein the cap body has a connecting portion at its lower end that is configured to be attached to the opening of a conduit or container. (Configuration 7) The cap according to Configuration 6, wherein the connecting portion is configured to be attached to the opening of a catheter or tube. (Configuration 8) The cap according to any one of Configurations 1 to 7, wherein the lid has a recess formed on its inner surface so as to be fitted with the upper end of the cap body. (Structure 9) The cap according to any one of Structures 1 to 8, wherein the entire structure is integrally molded from the same flexible synthetic resin material. (Configuration 10) comprising a cap as described in any of Configurations 1 to 9. A connector characterized by the following. [Industrial applicability]

[0063] The cap according to this invention can ensure sufficient airtightness between the body and the lid, while being able to be easily opened with minimal force, and can be used by attaching it to the opening (mouth) of conduits such as catheters or containers such as bottles. Therefore, this cap is likely to be used particularly in the medical industry. [Explanation of Symbols]

[0064] 1 Cap, 2 Cap body, 2a Opening, 2b Tapered surface, 2c Flange, 2d Peripheral wall, 2e Connecting part, 2f Engaging projection, 3 Lid, 3a Inner surface, 3b Peripheral wall, 3c Recess, 3d Fitting wall, 3e Outer surface (contact part), 3f Protruding part, 4 Knob member, 4a End face, 4b Upper edge (contact part), 4c Engaging hole, 4d Through hole, 4e Tip, 5 Connecting part, H1 First hinge part, H2 Second hinge part, d1 Distance between the part where force is applied at the tip of the knob member (point of force application) and the hinge rotation part (fulcrum), d2 Distance between the hinge rotation part (fulcrum) and the contact part (point of application) between the base end of the knob member and the outer surface of the lid

Claims

1. The device comprises a cap body having an opening at least at its upper end, and a lid that is hinged to the cap body via a first hinge portion and opens or closes the opening at the upper end of the cap body. The aforementioned cover is The free end is equipped with a long knob member of a required thickness, which is pivotably attached in a direction parallel to the opening and closing direction of the lid. The knob member is attached to the lid such that, in a horizontal position, a gap of a required size is formed between the end face of its base end and the outer circumferential surface of the lid facing the end face. The knob member is configured such that when it swings in a direction parallel to the opening direction of the lid, the base end of the knob member contacts the outer circumferential surface or edge of the lid, and in the state where the base end of the knob member contacts the outer circumferential surface or edge of the lid, the distance between the tip of the knob member and the rotating portion of the first hinge is set to be longer than the distance between the rotating portion of the first hinge and the contact portion. A cap characterized by [this feature].

2. The aforementioned knob member is, The lid is configured such that when it is rocked in a direction parallel to the opening direction, the upper edge of its base end contacts the outer circumferential surface of the lid, or the end face of its base end contacts the upper edge of the lid. The cap according to claim 1, characterized by the following:

3. The aforementioned knob member is, Its base end is hinged to the free end of the lid via a second hinge portion so as to be able to swing freely in a direction parallel to the opening direction of the lid. The cap according to claim 1 or 2, characterized by the following:

4. The size of the aforementioned gap is, The size must be between 0.1 mm and 1.0 mm. The cap according to claim 1 or 2, characterized by the following:

5. The aforementioned knob member is, It is composed of a long, flat plate-shaped member, and its tip is curved in an arc shape that is convex toward the opening direction of the lid. The cap according to claim 1 or 2, characterized by the following:

6. The aforementioned cap body is It has a connecting portion on its lower end that is configured to be attached to the opening of a conduit or container. The cap according to claim 1 or 2, characterized by the following:

7. The aforementioned connection part is It is configured to be attachable to the opening of a catheter or tube. The cap according to claim 6, characterized by the following:

8. The aforementioned cover is It has a recess formed on its inner surface that can be fitted with the upper end of the cap body. The cap according to claim 1 or 2, characterized by the following:

9. The aforementioned cap is The entire structure is integrally molded from a single, flexible synthetic resin material. The cap according to claim 1 or 2, characterized by the following:

10. The cap is provided as described in claim 1 or 2. A connector characterized by the following.

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