JP6466052B2 - Container with cap - Google Patents

Description

The present invention relates to a container with a cap provided with a container cap that is detachably attached to the mouth of the container.

  Containers that contain various liquid or gel-like contents such as fragrances, beverages, cosmetics, etc. have conventionally been provided with caps with male threads formed on the outer peripheral surface of the mouth and female threads formed on the inner peripheral surface. By engaging the mouth of the container by screwing, the upper end opening of the mouth is closed by the cap, and the contents are sealed. As this type of cap, for example, a cap described in Patent Document 1 has been proposed.

  As shown in FIG. 12, the cap 100 described in Patent Document 1 includes an upper surface portion 101, an annular side surface portion 102 that hangs from the outer peripheral edge of the upper surface portion 101, and a position inside the side surface portion 102 of the upper surface portion 101. And a cylindrical inner ring 103 that hangs down. On the inner peripheral surface of the side surface portion 102, a female screw 104 that is screwed with a male screw 112 formed on the outer peripheral surface of the mouth portion 111 of the container 110 is formed. When the inner ring 103 is put on the mouth portion 111 of the container 110 and engaged with the inner screw 103 by screwing the female screw 104 and the male screw 112, the outer peripheral surface of the inner ring 103 contacts the inner peripheral surface of the mouth portion 111. Thus, a seal is formed between the mouth portion 111 and the mouth portion 111 is plugged. Thereby, the contents in the container 110 are prevented from leaking from between the mouth portion 111 and the cap 100.

JP 2011-57269 A

  However, in the cap 100 described in Patent Document 1, since the cap 100 is engaged with the mouth portion 111 while the inner ring 103 is in contact with the mouth portion 111 of the container 110, when the cap 100 is screwed into the mouth portion 111. A large contact resistance. Therefore, a large torque (force) is required to attach the cap 100 to the mouth portion 111. For this reason, if the cap 100 is attached to the mouth portion 111 with excessive force, the cap 100 and the mouth portion 111 When the cap 100 is removed from the mouth 111, a problem arises that a large torque (force) is required and it becomes difficult to open the cap. This is particularly noticeable in the case of the container 110 having the wide-mouthed portion 111 such that the diameter (portion) of the mouthed portion 111 is 40 mm or more, for example.

  In addition to the above-described type of container that engages the cap with the mouth by engaging the screw, the cap is plugged into the mouth and the engaging convex portion at the lower end of the cap is hooked on the outer peripheral surface of the mouth. For the container of the type to be combined, when the inner ring contacts the mouth, a large contact resistance is generated when the cap is pushed into the mouth. Therefore, similarly, a large force is required to attach the cap to the mouth part. For this reason, when the cap is attached to the mouth part, a poor engagement occurs, and also when the cap is removed from the mouth part, a large amount of force is required. There is a problem that it is difficult to open the plug because it requires force.

  The present invention has been made paying attention to the above-described problems, and can prevent leakage of contents from between the mouth portion of the container and the cap, and causes poor engagement between the cap and the mouth portion of the container. It is an object of the present invention to provide a cap for a container that is not allowed and a container with a cap provided with the cap for the container.

The object of the present invention includes a container having a mouth part having a diameter of 40 mm or more, and a container cap attached to the mouth part of the container, the container cap comprising an upper surface part, and an upper surface part. A tubular cap that is attached to the mouth of the container by engaging the mouth of the container with the side of the container, and the upper surface of the container An annular contact ring that is provided to protrude from the lower surface of the upper surface portion at a position facing the mouth portion, and contacts the upper surface of the mouth portion of the container when the cap is engaged with the mouth portion of the container; and the contact ring A cylindrical guide wall which is provided at an inner position of the upper surface portion so as to protrude from the lower surface of the upper surface portion and always faces the inner peripheral surface of the container mouth portion with a gap when the cap is engaged with the mouth portion of the container. When provided with the inner peripheral surface of the side section, the mouth of the container A female screw that is screwed with a male screw formed on the outer peripheral surface of the container is formed, and the tip of the guide wall is placed in the container until the female screw of the cap starts to engage with the male screw at the mouth of the container. This is achieved by the capped container in which the height of the guide wall is set so as to be located below the upper surface of the mouth portion .

  In a preferred embodiment of the present invention, the inner peripheral surface of the side surface portion is formed with a female screw that engages with a male screw formed on the outer peripheral surface of the mouth portion of the container.

  In a further preferred embodiment of the present invention, the distance between the outer peripheral surface of the guide wall and the inner peripheral surface of the mouth of the container is 0.1 mm or more.

  In a further preferred embodiment of the present invention, the distance between the outer peripheral surface of the guide wall and the inner peripheral surface of the mouth of the container is less than half the height of the thread of the female screw.

  In a further preferred aspect of the present invention, the upper surface portion is provided between the contact ring and the side surface portion so as to protrude from the lower surface of the upper surface portion, and the cap is engaged with the mouth of the container. It further comprises an annular outer ring that contacts the outer peripheral surface of the mouth of the container.

  In a further preferred aspect of the present invention, the upper surface portion is characterized in that a lower surface of a region between the outer ring and the side surface portion is raised.

According to the container with a cap provided with the container cap of the present invention, the contact ring and the outer ring are stoppered at two locations between the upper surface portion of the cap and the mouth portion of the container. Well sealed. Therefore, it is possible to satisfactorily prevent the contents in the container from leaking out between the mouth and the cap.

  Further, when the cap is engaged with the mouth portion of the container, the guide wall does not contact the mouth portion, so that contact resistance does not occur between the guide wall and the mouth portion. Therefore, when the cap is engaged with the mouth portion of the container, a strong force is not required, and it is possible to prevent the cap and the mouth portion from being poorly engaged due to excessive tightening of the cap with respect to the mouth portion. Also, when removing the cap from the mouth, it can be easily opened without requiring a strong force.

  Further, when the cap is put on the mouth portion to engage the mouth portion of the container, even if the cap is put on the mouth portion in an inclined cap state, the tip end portion of the guide wall comes into contact with the mouth portion. Thus, the inclined state of the cap is corrected. As a result, the cap is returned to a horizontal state or a substantially horizontal state and normally engages with the mouth portion of the container, so that the cap and the mouth portion are poorly engaged when the cap is engaged with the mouth portion in an inclined state. Can be prevented.

It is a perspective view of a container with a cap concerning one embodiment of the present invention. It is a side view of the container with a cap of FIG. It is a front view of the cap for containers concerning one embodiment of the present invention. It is a top view of the container cap of FIG. It is a bottom view of the container cap of FIG. FIG. 6 is a partially enlarged view of FIG. 5. It is sectional drawing of the cap for containers of FIG. FIG. 8 is a partially enlarged view of FIG. 7. It is sectional drawing which expands and shows the opening part and container cap of a container. It is sectional drawing which shows the condition where the container cap was covered in the state inclined with respect to the opening part of a container. It is sectional drawing which shows the condition where the cap for containers returned to the horizontal state with respect to the opening part of the container. It is sectional drawing which expands and shows the opening part and container cap of the container of a prior art example.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 and 2 show an external configuration of a cap-equipped container 1 including a container cap 2 (hereinafter simply referred to as “cap 2”) according to an embodiment of the present invention.

  The container 1 with a cap is provided with a mouth 11 having an open upper end, and is continuously provided in the mouth 11, and is a hollow and bottomed container that can contain liquid or gel-like contents such as fragrances, beverages, and cosmetics. The container 10 is provided with a body portion 12, and the cap 2 is detachably attached to the mouth portion 11. The container 10 is formed of a synthetic resin such as polyethylene terephthalate, polyethylene, or polypropylene, and can be manufactured by a known blow molding such as injection blow molding. The container 10 is entirely transparent or translucent, and the remaining amount of the contents stored inside can be confirmed from the outside. In addition, as a raw material of this container 10, it is not restricted to a synthetic resin, In addition, glass etc. can be illustrated preferably. The diameter (aperture) r (shown in FIG. 9) of the mouth portion 11 of the container 10 is not particularly limited, and the cap 2 of the present invention can be used as a cap for the narrow container 10 having the mouth portion 11 having a small diameter r. Although it can be applied, it can be suitably applied to a cap for the container 10 having the wide mouth portion 11 having a diameter r of 40 mm or more.

  As shown in FIGS. 3 to 9, the cap 2 is made of a soft synthetic resin as a whole, and has an upper surface portion 3 formed in a circular shape in plan view and a cylindrical side surface depending from the outer peripheral edge of the upper surface portion 3. Part 4 and having an upper end closed and a lower end opened.

  On the inner peripheral surface of the side surface portion 4, a female screw 5 that is screwed with a male screw 13 (shown in FIG. 9) provided on the outer peripheral surface of the mouth portion 11 of the container 10 is provided. By screwing the cap 2 while rotating the cap 2 in one direction with respect to the mouth 11 of the container 10 by screwing the female screw 5 and the male screw 13, the cap 2 is engaged with the mouth 11, and the upper end of the mouth 11 is The opening is closed and the contents in the container 10 are sealed. The female screw 5 has a screw thread 50 that circulates in a spiral shape, and has a predetermined height h (shown in FIG. 7). In addition, the female screw 5 has an inner periphery of the side surface portion 4 at a portion (starting position) where the screw threads on the upper side (the upper end closing side of the cap 2) and the lower side (the lower end opening side of the cap 2) begin. An incomplete screw thread 51 (hereinafter referred to as “incomplete screw thread 51”) that gradually increases in height from the surface is continuously provided for a predetermined length. The incomplete thread 51 is formed when the mold is processed, and has a shape that can be formed at the start or end of the first process when the thread portion of the mold is processed with a blade. In the following, the starting point position of the screw thread 50 indicates the position where the screw thread 50 having a height of h starts in principle on both the upper side and the lower side, and does not indicate the position where the incomplete screw thread 51 starts. . Further, the male screw 13 also has a screw thread 13 </ b> A that circulates in a spiral shape, and similarly to the female screw 5, the upper side of the screw thread 13 </ b> A (the upper end opening side of the mouth portion 11) and the lower side An incomplete screw thread (not shown) whose height gradually increases from the outer peripheral surface of the mouth portion 11 is continuously provided for a predetermined length at the starting point position on the body 10 side of the container 10. Yes.

  A step portion 6 is formed at a position below the female screw 5 on the inner peripheral surface of the side surface portion 4, and the inner peripheral surface of the lower end portion 40 of the side surface portion 4 is slightly enlarged in diameter. On the outer peripheral surface of the mouth portion 11 of the container 10, a protrusion 14 protruding from the outer peripheral surface is provided over the entire circumference, and when the cap 2 is rotated and screwed into the mouth portion 11 of the container 10, the step portion 6. Since the protrusion 14 of the mouth portion 11 of the container 10 abuts against the cap 10, the screwing of the cap 2 into the mouth portion 11 of the container 10 is restricted.

  A plurality of ridges 42 extending in the vertical direction are formed on the outer peripheral surface of the side surface portion 4. Thereby, it is easy to grasp the cap 2, and it is easy to rotate the cap 2 with respect to the mouth portion 11 of the container 10. In addition, arrows 30 and 30 are provided on the upper surface of the upper surface portion 3 toward the rotation direction in which the cap 2 and the mouth portion 11 of the container 10 are engaged.

  A cylindrical guide wall 7 is provided on the lower surface of the upper surface portion 3 so as to protrude from the lower surface of the upper surface portion 3 around the center position of the upper surface portion 3. An annular contact ring 8 having a height lower than that of the guide wall 7 is provided around the guide wall 7 so as to protrude from the lower surface of the upper surface portion 3. Further, around the contact ring 8, an annular outer ring 9 having a height lower than that of the guide wall 7 and higher than that of the contact ring 8 is provided concentrically so as to protrude from the lower surface of the upper surface portion 3. ing.

The contact ring 8 is provided at a position facing the upper surface of the mouth portion 11 when the cap 2 is put on and engaged with the mouth portion 11 of the container 10. By screwing the cap 2 into the mouth 11 of the container 10 while rotating the cap 2, the tip of the contact ring 8 comes into contact with the upper surface of the mouth 11 (shown in FIG. 9). Thereby, when the cap 2 is engaged and attached to the mouth portion 11 of the container 10, a first seal is formed between the upper surface portion 3 of the cap 2 and the mouth portion 11 of the container 10. Therefore, the inside of the container 10 can be hermetically sealed, and the contents in the container 10 can be prevented from leaking from between the mouth portion 11 and the cap 2. In the present embodiment, the shape of the contact ring 8 is a mountain shape with a round top when viewed in cross section, but may be a mountain shape with a sharp top. Moreover, as long as it protrudes from the lower surface of the upper surface part 3, such as a rectangular shape in sectional view, it may be formed in various shapes. The height of the contact ring 8 (the length from the lower surface of the upper surface portion 3 to the tip of the contact ring 8) is preferably 0.1 mm or more and 1.0 mm or less, and is set to about 0.2 mm, for example.

  The outer ring 9 is provided between the contact ring 8 and the side surface portion 4, and is screwed into the mouth portion 11 of the container 10 while rotating the cap 2, so that the inner peripheral surface of the outer ring 9 is the mouth portion. 11 (shown in FIG. 9). As a result, when the cap 2 is engaged and attached to the mouth portion 11 of the container 10, the first seal is added between the upper surface portion 3 of the cap 2 and the mouth portion 11 of the container 10. Two seals are formed. Thus, in this embodiment, the inside of the container 10 is accurately sealed by the two stoppers of the contact ring 8 and the outer ring 9, and the content in the container 10 is between the mouth portion 11 and the cap 2. It is more reliably prevented from leaking out. In addition, the inner peripheral surface of the outer ring 9 is formed in a tapered shape that tapers toward the tip. The height of the outer ring 9 (the length from the lower surface of the upper surface 3 to the tip of the outer ring 9) is preferably 0.5 mm or more and 5.0 mm or less, and is set to about 1.5 mm, for example.

  In the region between the outer ring 9 and the side surface portion 4, a raised portion 31 is provided in which the lower surface of the upper surface portion 3 is raised from the inner region of the outer ring 9. If the cap 2 is screwed without loosening so as not to leak and attached to the mouth 11 of the container 10, the cap 2 may be tightened with a strong force against the mouth 11 of the container 10. If the cap 2 is tightened excessively with respect to the mouth portion 11 of the container 10, the side surface portion 4 of the cap 2 faces the lower end 40 on the outer side with the female screw 5 that is an engaging portion with the mouth portion 11 of the container 10. The upper end portion 41 is deformed so as to be pushed out and pushed inward. When the upper end portion 41 of the side surface portion 4 of the cap 2 is pushed inward, the outer ring 9 is pushed inward, that is, toward the mouth portion 11 of the container 10. It gets on the upper surface of the mouth part 11 without being caught on the outer peripheral surface, and therefore there is a possibility that the above-described contact ring 8 and outer ring 9 are not stoppered and the content is not completely sealed. . This occurs remarkably because the container 10 with the larger diameter r of the mouth portion 11 tends to fasten the cap 2 to the mouth portion 11 of the container 10 with a stronger torque (force).

  On the other hand, as in the present embodiment, by providing the raised portion 31 in the region between the outer ring 9 and the side surface portion 4, the strength of the upper end portion 41 of the side surface portion 4 is increased, and the raised portion 31 is deformed. Functions as a stopper to suppress the outer ring 9 from being pushed inward. Thereby, the inner peripheral surface of the outer ring 9 keeps in good contact with the outer peripheral surface of the mouth portion 11 of the container 10, and the stoppers of the contact ring 8 and the outer ring 9 are held, so that the sealed state in the container 10 is maintained. Can be held well. The height of the raised portion 31 (the length from the lower surface of the upper surface portion 3 to the tip portion of the raised portion 31) is preferably 0.3 mm or greater and 4.0 mm or less, and is set to, for example, about 0.5 mm.

  In this embodiment, the guide wall 7 is formed in a cylindrical shape having an outer diameter R smaller than the diameter r of the mouth portion 11 of the container 10, and when the cap 2 is engaged with the mouth portion 11 and attached. Is opposed to the inner peripheral surface of the mouth portion 11 with a gap d. Thus, the guide wall 7 of the present embodiment is formed in a size (outer diameter R) that does not contact the inner peripheral surface of the mouth portion 11 when the cap 2 is engaged with the mouth portion 11 of the container 10. Therefore, when the cap 2 is engaged with the mouth portion 11 while being screwed, no contact resistance is generated between the guide wall 7 and the mouth portion 11.

  The guide wall 7 functions as positioning for positioning the cap 2 at an appropriate position with respect to the mouth 11 when the cap 2 is put on the mouth 11 to engage the mouth 11 of the container 10. The cap 2 functions as a guide for engaging with the mouth portion 11 in a horizontal state or a substantially horizontal state. That is, as shown in FIG. 10, when the cap 2 is put on the mouth portion 11 of the container 10 in the inclined cap state, the female screw 5 and the male screw 13 are screwed together while the cap 2 is inclined. There is a risk that the cap 2 and the mouth portion 11 will eventually cause poor engagement. On the other hand, since the cylindrical guide wall 7 is provided on the lower surface of the upper surface portion 3 of the cap 2, the cap 2 is covered with the mouth portion 11 of the container 10 in an inclined cap state. 11, the outer peripheral surface of the tip portion 70 on the side inclined downward of the guide wall 7 before the female screw 5 of the cap 2 and the male screw 13 of the mouth portion 11 start screwing. Comes into contact with the inner peripheral surface of the upper end portion of the mouth portion 11, thereby correcting the inclined state of the cap 2. Therefore, as shown in FIG. 11, the cap 2 is in a horizontal state or a substantially horizontal state, and the female screw 5 and the male screw 13 are normally screwed together. Thus, in this embodiment, the guide wall 7 prevents the cap 2 from engaging with the mouth portion 11 in an inclined cap state, so that the cap 2 and the mouth portion 11 are engaged. It is prevented from causing defects.

  In addition, when the content in the container 10 is liquid or volatile, a droplet of the content may adhere to the lower surface of the upper surface portion 3 of the cap 2. When this droplet spreads along the lower surface of the upper surface portion 3 to the upper surface position of the mouth portion 11 of the container 10, it is plugged by the contact ring 8 and the outer ring 9, but between the mouth portion 11 and the cap 2. There is a risk of leakage. In the present embodiment, since the cylindrical guide wall 7 is provided on the lower surface of the upper surface portion 3 of the cap 2, the liquid spreading along the lower surface of the upper surface portion 3 spreads further outward on the guide wall 7. This prevents the contact ring 8 and the outer ring 9 from flowing down along the inner peripheral surface of the guide wall 7. Therefore, the contents in the container 10 are more reliably prevented from leaking between the mouth portion 11 and the cap 2.

  The size (outer diameter R) of the guide wall 7 is set so that the distance d between the outer peripheral surface of the guide wall 7 and the inner peripheral surface of the mouth 11 of the container 10 is at least 0.1 mm or more. Is preferred. When the distance d is 0.1 mm or more, the guide wall 7 can be well prevented from coming into contact with the inner peripheral surface of the mouth portion 11 when the cap 2 is engaged with the mouth portion 11 of the container 10. On the other hand, if the distance d is too wide, when the cap 2 is put on the mouth portion 11 of the container 10 and engaged, the guide for engaging the cap 2 with the mouth portion 11 in a horizontal state or a substantially horizontal state is provided. The guide function of the wall 7 does not function well, and there is a possibility of causing an engagement failure that engages with the mouth portion 11 in the state of the oblique cap in which the cap 2 is inclined. On the other hand, if the distance d is at least significantly smaller than the height h of the thread 50 of the female screw 5, specifically, if it is less than half the height h of the thread 50, the female of the cap 2 Since the screw 5 cannot get over the male screw 13 of the container 10, it is possible to effectively prevent the cap 2 from engaging with the mouth portion 11 of the container 10 in an inclined cap state. If the distance d is more than half the height h of the thread 50, the female screw 5 of the cap 2 may get over the male screw 13 of the container 10 only by applying a small force. Therefore, it is preferable that the size (outer diameter R) of the guide wall 7 is set so that the distance d is not more than half of the height h of the thread 50. The guide wall 7 is not necessarily formed in a cylindrical shape, and may be formed in a rectangular tube shape. In addition, when formed in the shape of a rectangular tube, the distance d between the outer peripheral surface of the guide wall 7 and the inner peripheral surface of the mouth portion 11 of the container 10 is the outer peripheral surface of the guide wall 7 and the mouth portion of the container 10. 11 indicates the distance between the closest locations (corner portions) to the inner peripheral surface.

Guide wall 7, until the female screw 5 of the cap 2 begins to male screw 13 engage with the mouth portion 11 of the container 10, positioned below the upper surface of the mouth portion 11 of the tip 70 the container 10 of the guide wall 7 Thus, it is preferable that the height H (the length from the lower surface of the upper surface portion 3 to the tip portion of the guide wall 7) is set. Here, the up male screw 13 and begins to engage the mouth portion 11 of the female screw 5 the container 10 of the cap 2, lower starting position of the thread 50 of the female screw 5, the threads of the male screw 13 This indicates a point in time when the screw thread 50 of the female screw 5 and the screw thread 13A of the male screw 13 are firmly engaged with each other. It should be noted that the start point position of the screw thread 50 of the female screw 5 does not strictly indicate the point in time when the start point position of the screw thread 13A of the male screw 13 is engaged. It is also acceptable to engage. When the female screw 5 of the cap 2 starts to engage with the male screw 13 of the mouth portion 11 of the container 10, the guide wall 7 is positioned above the upper surface of the mouth portion 11 of the container 10. Before the wall 7 functions as a guide, the female screw 5 is engaged with the male screw 13, and as a result, the cap 2 is inclined, and the female screw 5 remains in the inclined cap state where the cap 2 is inclined. This is because there is a risk of causing a poor engagement with which the male screw 13 is engaged. Further, the height H of the guide wall 7 is set to a height (below the height of the side surface portion 4) such that the tip end portion of the guide wall 7 does not protrude downward from the lower end portion of the side surface portion 4 of the cap 2. Preferably it is.

  As described above, according to the cap 2 configured as described above, the contact ring 8 and the outer ring 9 are stoppered between the upper surface portion 3 of the cap 2 and the mouth portion 11 of the container 10 at two locations. The inside of 10 is hermetically sealed. Therefore, it is possible to satisfactorily prevent the contents in the container 10 from leaking outside between the mouth portion 11 and the cap 2.

  Further, when the cap 2 is engaged with the mouth portion 11 of the container 10 while being screwed, the guide wall 7 does not contact the mouth portion 11, so that no contact resistance is generated between the guide wall 7 and the mouth portion 11. Therefore, when the cap 2 is screwed into the mouth portion 11 of the container 10 to be engaged, a large torque is not required, and the cap 2 and the mouth portion 11 are engaged when the cap 2 is tightened excessively with respect to the mouth portion 11. It is possible to prevent the occurrence of defects. Further, when removing the cap 2 from the mouth portion 11, it can be easily opened without requiring a large torque.

  In addition, when the cap 2 is put on the mouth portion 11 in order to engage the mouth portion 11 of the container 10, even if the cap 2 is put on the mouth portion 11 in an inclined cap state, the female screw of the cap 2 is used. 5 and the outer thread of the tip part 70 on the side inclined downward of the guide wall 7 is in contact with the inner peripheral surface of the upper end part of the mouth part 11 before the male screw 13 of the mouth part 11 starts screwing. By doing so, the inclination state of the cap 2 is corrected. The cap 2 is returned to a horizontal state or a substantially horizontal state by the guide function of the guide wall 7 and the female screw 5 and the male screw 13 are normally screwed together. Therefore, the cap 2 is engaged with the mouth portion 11 in an inclined state. It is possible to prevent the engagement failure between the cap 2 and the mouth portion 11 due to being performed. Further, even if the content droplets adhere to the lower surface of the upper surface portion 3 of the cap 2, the guide wall 7 restricts the droplets from spreading along the lower surface of the upper surface portion 3. Therefore, since the liquid droplets are prevented from reaching the contact ring 8 and the outer ring 9, it is possible to more reliably prevent the contents in the container 10 from leaking from between the mouth portion 11 and the cap 2.

  In addition, since the raised portion 31 is provided in the region between the outer ring 9 and the side surface portion 4, the strength of the upper end portion 41 of the side surface portion 4 is increased by the raised portion 31. Therefore, for example, when the cap 2 is screwed into the mouth portion 11 of the container 10 with a strong force so as not to leak, even if the upper end portion 41 of the side surface portion 4 of the cap 2 tries to be deformed in a direction to be pushed inward, the raised portion As a result of 31 functioning as a stopper for suppressing deformation, the outer ring 9 is prevented from being pushed inward. Thereby, the outer ring 9 can be prevented from climbing onto the upper surface of the mouth part 11 without being caught on the outer peripheral surface of the mouth part 11, and the inner circumferential surface of the outer ring 9 is connected to the outer circumferential surface of the mouth part 11 of the container 10. Since it keeps contacting well, the inside of the container 10 can be satisfactorily sealed without removing the stoppers by the contact ring 8 and the outer ring 9 described above.

  Although one embodiment of the present invention has been described above, specific aspects of the container cap and the cap-equipped container according to the present invention are not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention. Can be changed. For example, although the outer ring 9 is provided in the container cap 2 in the above embodiment, the outer ring 9 is not necessarily provided. Further, the raised portion 31 is not necessarily provided.

  Moreover, in the said embodiment, although the cap 2 is engaged with the opening part 11 of the container 10 by the screwing of the external thread 13 and the internal thread 5, it seems that the cap 2 is plugged into the opening part 11 and engaged. You may comprise. For example, a locking portion such as a step portion that can provide an engaging convex portion on the inner peripheral surface of the lower end of the side surface portion 4 of the cap 2 and can hook the engaging convex portion on the outer peripheral surface of the mouth portion 11 of the container 10. The cap 2 may be engaged with and attached to the mouth portion 11 by pushing the cap 2 into the mouth portion 11 and hooking the engaging convex portion on the locking portion. Even in this case, when the cap 2 is pushed into the mouth portion 11, the guide wall 7 does not contact the mouth portion 11, so that no contact resistance is generated between the guide wall 7 and the mouth portion 11. Therefore, a large force is not required when the cap 2 is engaged with the mouth portion 11 of the container 10 by stoppering, and it is possible to prevent a poor engagement between the cap 2 and the mouth portion 11. Moreover, when removing the cap 2 from the mouth part 11, it can be easily opened without requiring a large force.

DESCRIPTION OF SYMBOLS 1 Container with cap 3 Cap for container 3 Upper surface part 4 Side surface part 5 Female screw 7 Guide wall 8 Contact ring 9 Outer ring 10 Container 11 Mouth part 12 Body part 13 Male screw 31 Raised part 50 Screw thread

Claims (5)

A container having a mouth having a diameter of 40 mm or more, and a container cap attached to the mouth of the container,
The container cap includes an upper surface portion and a cylindrical side surface portion depending from a peripheral edge of the upper surface portion, and the side surface portion is attached to the mouth portion of the container by engaging with the mouth portion of the container. And
The upper surface portion is
An annular contact ring that is provided so as to protrude from the lower surface of the upper surface portion at a position facing the mouth portion of the container, and that comes into contact with the upper surface of the container mouth portion when the cap is engaged with the mouth portion of the container;
A cylindrical shape that is provided at the inner position of the contact ring so as to protrude from the lower surface of the upper surface portion, and that always faces the inner peripheral surface of the mouth portion of the container when the cap is engaged with the mouth portion of the container. And a guide wall ,
On the inner peripheral surface of the side portion, a female screw that is screwed with a male screw formed on the outer peripheral surface of the mouth portion of the container is formed,
The height of the guide wall is such that the tip of the guide wall is positioned below the top surface of the mouth of the container before the female thread of the cap begins to engage with the male thread of the mouth of the container. Container with cap set . The container with a cap according to claim 1 , wherein the distance between the outer peripheral surface of the guide wall and the inner peripheral surface of the mouth of the container is 0.1 mm or more. The container with a cap according to claim 2 , wherein the distance between the outer peripheral surface of the guide wall and the inner peripheral surface of the mouth of the container is not more than half of the height of the thread of the female screw. The upper surface portion is provided between the contact ring and the side surface portion so as to protrude from the lower surface of the upper surface portion, and contacts the outer peripheral surface of the mouth portion of the container when the cap is engaged with the mouth portion of the container. The container with a cap according to any one of claims 1 to 3 , further comprising an annular outer ring that comes into contact therewith. The said upper surface part is a container with a cap of Claim 4 in which the lower surface of the area | region between the said outer ring and the said side part protrudes.

Images