JPH0513733Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" The present invention is suitable for fitting a lid to a container that requires positioning so that their contours match when the lid is attached to the container body. Regarding the mating structure.

``Prior art'' For example, in the case of containers for cosmetics, daily necessities, medicines, etc., the contents are often used frequently, so it is necessary to easily attach and detach the lid that covers the opening of the container body. It is desirable that the lid has a structure that does not easily come loose when the lid is closed.

Conventional lid fitting structures for containers include a structure in which the lid is screwed to the mouth of the container body, and a fitting structure in which an undercut is provided and the lid is attached removably. With the former screw connection method, it takes time to rotate the lid, it is difficult to accurately align the lid, and the lid is likely to come loose, whereas with the latter fitting method, it is possible to make the lid easier to fit. There were problems such as the lid becoming more likely to come off with difficulty.

Therefore, as a means to solve this problem, a simple fitting container as shown in FIG. 12 has been proposed. In this container, the upper part of the opening 2 of the container body 1 is formed into a prismatic shape by alternately combining the sides 3 nearer to the center and the sides 4 farther from the center, and the lower part of the far side 4 of the prismatic opening 2 is formed into a prismatic shape. Four cutting grooves 5 each having an upper edge tapered downward as it progresses in the circumferential direction are formed, and a groove is formed on the far side 4 at a lower position on the inner wall surface of the lid 6 corresponding to the container body 1. It has a structure in which a locking protrusion 7 having a height and direction that can be fitted into the drilled cutout groove 5 is protruded, and by slightly rotating the lid 6, attachment/detachment and positioning of the lid 6 can be performed. In addition, the lid 6 can be effectively prevented from loosening. In addition, as this type of fitting container,
Fitting containers disclosed in Japanese Utility Model Publication No. 17648 and Japanese Utility Model Publication No. 49-8642 have been proposed. The former type of fitting container consists of a container main body having a planar polygonal lid attachment portion, and a planar substantially polygonal lid body that is removably fitted to the lid attachment portion by rotational operation. A recessed groove-shaped fitting part is provided on the outer surface of the opposite sides in the entire lateral direction, and an engaging part is provided on the inner circumferential wall of the lid to engage and disengage from the fitting part by rotating it by a predetermined opening. It is what it is. The latter fitting container consists of a container main body having a rectangular planar shape with a cylindrical opening, and a cap having a rectangular planar shape that is removably fitted to the opening by rotating the opening. A circumferential protrusion is provided on the outer circumferential surface of the cap, and a protrusion is provided on the inner peripheral wall of the cap that rides over the circumferential protrusion to engage and disengage.

``Problems to be solved by the invention'' However, in the case of the simple fitting container shown in FIG. 12, since the opening 2 is polygonal (octagonal) as shown in the example, When attaching the lid 6 to the container body 1, before rotating the lid 6, first align the lid 6 so that the locking protrusion 7 corresponds to the side 3 near the center of the opening 2. There was an inconvenience in that the lid 6 had to be opened, pushed down, and then rotated. Further, in this simple fitting container, although the means for engaging the lid 6 and the opening 2 is of a screw type, the lid 6
Since the structure is such that the inner wall surface of the lid 6 and the far side 4 are aligned in surface contact, it is difficult to apply a large axial load to the lid 6 by tightening the screws, and there is a fear that liquid leakage may easily occur. It was hot. Furthermore, in the case of the fitting container disclosed in the above-mentioned Japanese Utility Model Publication No. 17648/1983, since the lid attachment part has a planar polygonal shape, the lid can be rotated like the fitting container shown in FIG. There remained the inconvenience of requiring a two-step operation to align the lid before moving it. Furthermore, in the case of the fitting container disclosed in the above-mentioned Japanese Utility Model Publication No. 49-8642, the shoulder section that extends from the body of the container body to the mouth section has the shape of the lower part of a square pyramid. If the cap is misaligned, the lower edge of the cap will come into contact with the ridgeline of the shoulder, making it impossible to push down the cap. Therefore, it is necessary to align the cap before pushing down the lid. Moreover, in the latter case, when the cap is fitted, the circumferential protrusion on the outer circumferential surface of the mouth only makes point contact with the inner wall surface of the lid. It is not enough to simply combine the vertical engagement with the protrusions on the inner wall surface and the sealing action between the shoulders that slope from the mouth to each side of the body and the bottom edge of the lid; There was still room for improvement in terms of its effectiveness.

This idea was made in view of the above circumstances, and it not only allows the lid to be easily installed without alignment, but also provides sufficient and stable lid loosening action at the same time as the lid is installed, preventing liquid leakage. The object of the present invention is to provide a lid fitting structure that can prevent the occurrence of defects.

"Means for Solving the Problem" Therefore, in the present invention, in a lid fitting structure for removably fitting a lid to the mouth of a container body, the outer peripheral surface of the mouth of the container body is shaped into a circular shape. and at least a pair of protrusions extending horizontally along the circumferential direction of the mouth at opposing positions on the outer peripheral surface of the mouth at intervals in the circumferential direction,
The outer surfaces of the paired protrusions in the protruding direction are formed to be parallel to each other, while the inner surface of the elastic flat plate-like side plate of the lid faces the mouth.
A protrusion that engages with the lower edge of the protrusion by elastic deformation of the side plate outward when the lid rotates, and a stopper piece that comes into contact with the end of the protrusion to restrict rotation of the lid. The protrusions are provided at intervals in the circumferential direction, and the protrusions are provided to extend horizontally along the inner surface of the side plate portion of the lid, and the surfaces of the opposing protrusions in the protrusion direction are parallel to each other, and The inner surface of the side plate portion of the lid is formed into a surface parallel to the facing outer surface so as to be in surface contact with the outer surface of the protrusion when the protrusion and the protrusion are engaged with each other. The upper surface of the ridge is formed as a downward slope, and the lower surface of the ridge is formed as an upward slope to narrow the outer surface of the ridge, and the lower surface of the ridge corresponds to the upper surface of the ridge. The guide has a configuration in which the protrusion has an inclined surface, and the lower surface on the end side of the protrusion is cut out diagonally, so that the guide descends as it goes from the end face on the end side of the protrusion to the lower surface. It is characterized by the formation of a surface.

"Function" The outer circumferential surface of the mouth of the container body is formed in a circular shape, and protrusions are provided at opposing positions on the outer circumferential surface, and the protrusions on the lid and the protrusions on the mouth are each provided horizontally. Therefore, by simply placing the lid over the mouth and slightly rotating it, the side plate of the lid elastically deforms outward and the protrusions on the lid and the ridges on the mouth easily engage, allowing the lid to be attached. will be carried out. Then, as a result of the stopper piece coming into contact with the end of the protrusion, the lid is restricted from rotating any further. Furthermore, in this regulation position, the outer surfaces of the mutually parallel protrusions and the inner wall surface of the lid are in surface contact at opposing positions, and the lower edges of each mutually horizontal protrusions and the upper edges of the protrusions are in surface contact. Since it engages in the condition, it exerts sufficient action to prevent the lid from loosening. On the other hand, when opening the lid, it can be removed from the container body by simply rotating the lid in the opposite direction and lifting it upward. When putting the lid on, if you press the lid when the protrusions and the protrusions are in the same position, the protrusions on the lid will be forced into the opening due to the outward elastic deformation of the side plates of the lid. By getting over the protrusion of the part, since the protrusion and the protrusion are horizontal at this time, the protrusion can be stably crossed, and the protrusion and the protrusion easily engage with each other, and the lid is easily put into the attached state.

"Embodiment" An embodiment of the present invention will be described below with reference to the drawings.

Figures 1 to 3 show an example in which the present invention is applied to a container having a square cross section. In these figures, reference numeral 10 denotes a container body, and 20 denotes a container that covers the opening 11 of the container body 10. It's a lid.

The body part 10a of the container body 10 has a square cross section, and has a mouth part 1 having a circular outer peripheral surface in the center of the upper part.
1 is provided. A resin inner stopper 13 is fitted into the opening 11, and has a peripheral surface that matches the outer diameter of the opening 11 and has a substantial spout 12 for dispensing the contents in the center. . Two pairs of protrusions 14, 14 extending in the circumferential direction of the mouth part 11 are provided at mutually opposing positions on the outer peripheral surface of the mouth part 11. In the illustrated example, these protrusions 14 are located at four equal parts in the circumferential direction of the mouth portion 11, and protrude respectively toward the four outer surfaces of the body portion 10a, and the protrusions 14, 14 that form the pair thereof The outer surfaces 14a, 14a are formed in parallel planes as shown in FIGS. 2 and 4. Further, at one end in the length direction of each of the protrusions 14 (the right end in the illustrated example), a lower edge 1 of the protrusion 1 is connected from the end of the protrusion 14 to the end of the protrusion 14, as shown in FIG.
4b, guide surfaces 14c having a downward slope are provided, respectively. In addition, the upper surface 14 of each protrusion 14
d is formed on a downward slope.

In this embodiment, the lid 20 has a square cross-sectional shape similar to the body portion 10a of the container body 10, and has a top plate portion 21 and four side plate portions 22.
It is constructed in the shape of a resin box with the entire lower surface open. On the inner wall surface of the lid 20, that is, on the inner surface of the side plate portion 22, there are protrusions 23 that engage with the lower edges 14b of each of the protrusions 14 when the lid 20 rotates, and protrusions 23 that abut one end of the protrusions 14. Close the lid 2
The number of stopper pieces 24 corresponding to the number of protrusions 14 (four pieces) for restricting further rotation of the 0 is provided. The surfaces of these opposing protrusions 23, 23 in the protruding direction are formed into planes parallel to each other, and the distance between these opposing protrusions 23, 23 is
As shown in FIG. 4, it is set slightly larger than the outer diameter of the mouth portion 11. Further, the inner surfaces of the four side plate portions 22 of the lid 20 have the protrusions 14 as shown in FIG.
When the protrusion 23 and the protrusion 23 are in an engaged state, the protrusion 14
The packing member (not shown) on the inner surface of the top plate portion of the lid 20 is formed in a plane parallel to the facing outer surface 14a and is set to have a dimensional relationship that makes surface contact with the outer surface of the lid 20. is set so that it comes into contact with the upper surface of the inner stopper 13 and the spout 12 is closed. Regarding the height positional relationship between each protrusion 23 and each protrusion 14, when the packing member of the lid 20 is in contact with the upper surface of the inner stopper 13, the upper edge of the protrusion 23 is as shown in FIG. is positioned above the lower edge 14b of the protrusion 14 by the tightening margin T. In addition, each side plate part 2
The two portions are formed thick enough to function as elastic plates, and the lower surface 23a of each protrusion 23 is formed into a downward slope.

In a container having such a structure, the outer circumferential surface of the mouth part 11 is circular, and each protrusion 14 of the mouth part 11 and each protrusion 23 of the lid 20 have a structure with no slope as a whole. Simply put the lid 20 over the opening 11 of the container body 10 without performing any positioning of the lid 20 with respect to the opening 11,
When the lid 20 is rotated in one direction (clockwise), the guide surface 1 of the protrusion 14 first
The protrusions 23 are engaged with the respective protrusions 23 to form a so-called extremely short screw mechanism, and in this state, the packing member inside the lid 20 comes into contact with the upper surface of the inner stopper 11, and the spout 12 is closed. As the lid 20 continues to rotate, the lid 20 is forcibly pulled down by an amount corresponding to the tightening margin T due to the action of the guide surface 14c, and a so-called vertical axial load is generated, and the protrusion 14 The inner wall surface of the lid 20 comes into contact with a part of the lid 20
However, when the lid 20 is rotated against this rotation, the side plate 22 is elastically deformed outward due to the elastic action of the side plate 22, and the lid 20 is
When the side plate portion 22 is allowed to rotate and rotated further, the side plate portion 22 returns to its original state as shown in FIG. At this time, the protrusion 2 of the lid 20
3 engages with the lower edge 14b of the protrusion 14, and each stopper piece 24 abuts on one end of each protrusion 14 to prevent the lid 20 from rotating any further. As a result, the contours of the container body 10 and the lid 20 match and are aligned with each other, and at the same time, the loosening prevention effect is exerted. In this state, the packing member (not shown) provided on the inner surface of the top plate of the lid 20 is strongly pressed against the upper surface of the inner plug 13 by the amount of the tightening margin T, and the spout 1 of the inner plug 13 is pressed against the upper surface of the inner plug 13. Since it is completely sealed and the axial load acts vertically, there is no possibility of loosening. In this way, the lid 20 is completely closed. In a state in which the inner surface portions are in contact with the outer surfaces 14a of each protrusion 14, the lid 20 cannot be inadvertently loosened unless the lid 20 is rotated to the extent that each side plate portion 22 of the lid 20 is elastically deformed. do not have. When removing the lid 20, it is only necessary to slightly rotate the lid 20 in the opposite direction and lift it upward.

According to this embodiment, the upper surface 14d of each protrusion 14 is formed as a downward slope, and the lower surface 23a of the projection 23 of the lid 20 is also formed as a downward slope. When the lid 20 is put on, if the protrusion 23 is located directly above the protrusion 14, simply pressing the lid 20 will cause the side plate 2 to close.
Due to the outward elastic deformation of 2, the protrusions 23 ride over the protrusions 14 and engage with each other, thereby making it possible to attach the lid.

In addition, in the example, an example was shown in which the container body and lid were applied to a container whose cross section was a regular square, but it can also be applied to a polygon other than a square.
In addition, for example, as shown in FIGS. 7 and 8, the lid 2
Needless to say, if 0 has a double wall structure and the inner wall 30 is square, it can also be applied to containers having a circular or oval outer shape.

Further, the outer surface 14a of the protrusion 14 provided on the outer peripheral surface of the mouth portion 11 does not necessarily need to be formed into a smooth surface. For example, as shown in FIG. may be formed. Further, it is not necessary to provide a plurality of stopper pieces 24 as in the embodiment, and as long as at least one stopper piece 24 is provided, its function can be achieved.

Further, as shown in FIGS. 10 and 11, both end surfaces in the length direction of the protrusion 14 of the mouth portion 11 are connected to the tapered surface 1.
4e, and the stopper piece 2 of the protrusion 23
There is also an upwardly sloped tapered surface 24 at the outer edge corner of 4.
If the configuration is such that the lid is opened, the lid is lifted upward by the action of both of these tapered surfaces, especially when the lid is opened, so that the lid can be attached and removed more conveniently. .

"Effects of the Invention" As explained above, the present invention has the following excellent effects.

(b) When putting the lid on the container body, all you have to do is put the lid over the mouth and rotate it a little or push it down; this simple operation allows you to
Due to the outward elastic deformation of the side plate of the lid, each horizontal protrusion easily engages with the lower surface of each horizontal protrusion, or each horizontal protrusion stably climbs over each horizontal protrusion. This allows the lid to be attached easily.

Therefore, the conventional two-step process of aligning the lid with the container body and then pushing it down before rotating the lid can be eliminated, and the operation can be done with a light operating force. In addition, the lid can be attached at once with stable operating force, and the ease of attaching the lid can be significantly improved.

(b) Furthermore, when the protrusion and the protrusion engage with each other and the lid is attached, the stopper piece comes into contact with the end of the protrusion, preventing the lid from rotating any further. , the lid can be positioned reliably, and the lid can be prevented from spinning idly.

(c) At the same time, the outer surfaces of the protrusions that are parallel to each other and the inner surface of the side plate of the lid are in surface contact at the respective positions, and the protrusions that are horizontal and parallel to each other at the opposing positions are in surface contact with each other. Since the lower surface and the upper surface of the protrusion engage in surface contact at their respective positions, the action of each member can sufficiently prevent the lid from loosening, and therefore, as shown in (b) above, In addition to the effect of the structure, the locking action of the lid can be extremely stably and effectively exerted.

(d) Furthermore, since the protrusions and protrusions are each formed along the horizontal direction, it is possible to apply a strong axial load, and liquid leakage can be reliably prevented.

(e) Furthermore, a structure that exhibits such excellent functions and effects can be realized with a simple configuration, and productivity can be improved at the same time.

(f) In particular, by providing a guide surface, in addition to improving the ease of fitting the lid, it also makes it possible to set the lid's "tightness" reliably, making it easier to ensure airtightness. be able to.

(g) In addition, horizontal protrusions are provided on the outer peripheral surface of the mouth of the container body, the upper surface of the protrusions is formed into a downwardly sloped surface, and the lower surface of the protrusions is formed into an upwardly sloped surface. By narrowing the outer surface of the protrusion and providing a diagonally cut guide surface at the end of the protrusion, the lid can be pushed down against the container body, or the lid can be pushed down against the container body. In either operation, such as rotating the lid, the lid can be reliably and smoothly fitted to the container body.

In other words, when pushing down on the lid and locking the protrusion on the protrusion on the mouth part, the protrusion is horizontal, so when fitting the lid, the protrusion on the lid is aligned with the top surface of the protrusion. Just overcome the shortest distance,
It has excellent operability and does not impose a large load on the lid when elastically deforming the lid.

Furthermore, when the lid is rotated and the protrusion of the lid is engaged with the protrusion, the inner surface of the side plate comes into surface contact with the outer surface of the protrusion in order to fix the position of the lid when fitted. Since the protrusions are formed in this manner, the protrusions press the side plate of the lid from the inner surface to cause elastic deformation, but as mentioned above, the protrusions are formed horizontally and the slopes of the upper and lower surfaces of the protrusions cause the protrusions to deform elastically. Since the outer surface of the protrusion is narrow, when the lid is rotated, it is the end of the protrusion with the narrowed outer surface that comes into contact with the inner surface of the side plate of the lid. The elastic deformation of the part can be made small. In addition, when the lid is rotated, the force is concentrated at the edge of the outer surface of the narrow ridge, and the frictional force is reduced. can be made small, so
With a small operating force for rotating the lid, the elastic side plate portion of the lid can be easily deformed.

Therefore, by making the protrusions horizontal and making the top and bottom surfaces of the protrusions slanted to narrow the outer surface of the lid, it is possible to improve the operability when rotating the lid, and also to improve the operability when rotating the lid. The load applied during elastic deformation can be reduced.

In addition, the protrusion of the lid is guided to the lower surface of the ridge by the guide surface, so the lid can be closed with sufficient "tightening", and the guide surface is placed diagonally at the end of the ridge. Since the protrusions are provided in a cut-out configuration, the effect of the above-mentioned protrusions being formed horizontally is not impaired.

Therefore, it is possible to fit the lid by pushing down and to rotate the lid while maintaining high operability and reliability without impairing the effects (a) to (f) above. It is possible.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a front view of the container body, FIG. 2 is a plan view, FIG. 3 is a perspective view of the lid, and FIGS. 5 is a cross-sectional view for explaining the function, FIG. 6 is a front view showing the relationship between the protrusions and the protrusions, and FIGS. 7, 8, and 9 are bottom views showing other embodiments of the present invention. figure,
A bottom view and a plan view, FIGS. 10 and 11 are a plan view and a front view showing an embodiment in which the protrusion and the stopper piece are provided with tapered surfaces, and FIG. 12 is a perspective view showing a conventional example. DESCRIPTION OF SYMBOLS 10... Container body, 11... Mouth part, 14... Projection, 14a... Outer surface, 14b... Lower edge, 20...
...Lid, 22...Side plate part, 23...Protrusion, 24...
Stotsupa piece.

Claims (1)

[Scope of utility model registration request] In the lid fitting structure for removably fitting the lid 20 into the mouth 11 of the container body 10, the outer circumferential surface of the mouth 11 of the container body 10 is formed into a circular shape, and the outer periphery of the mouth 11 is formed into a circular shape. At least a pair of protrusions 14 extending horizontally along the circumferential direction of the mouth portion 11 are provided at intervals in the circumferential direction at opposing positions on the surface, and an outer surface 14a in the protruding direction of the paired protrusions 14. are formed in mutually parallel planes,
On the other hand, the lower edge of the protrusion 14 is applied to the inner surface facing the mouth 11 of the flat elastic side plate 22 of the lid 20 by elastic deformation of the side plate 22 outward when the lid is rotated. protrusion 23 that engages with 14a
and a stopper piece 24 that abuts the end of the protrusion 14 to restrict rotation of the lid are provided at intervals in the circumferential direction, and the protrusion 23 extends horizontally along the inner surface of the side plate portion 22 of the lid. The surfaces of the opposing protrusions 23 in the protruding direction are parallel to each other, and the inner surface of the side plate 22 of the lid is
The protrusions 14 and the protrusions 23 are formed in a plane parallel to the facing outer surface 14a so as to be in surface contact with the outer surface 14a of the protrusions 14 when they are engaged with each other. The outer surface 14 of the protrusion 14 is formed by forming the upper surface 14d as a downward slope, and forming the lower surface of the protrusion as an upward slope.
a is made narrower, the lower surface of the protrusion 23 is made into an inclined surface corresponding to the upper surface 14d of the protrusion 14, and the lower surface of the end side of the protrusion 14 is cut out diagonally. A lid fitting structure characterized in that a guide surface 14c is formed that descends from the end surface of the protrusion 14 toward the bottom surface.