JPH0642701U - Can lid structure - Google Patents

Abstract

(57) [Summary] [Purpose] Safely contain the volatile components of the contained product.
Prevents the lid from coming off and the contained product from leaking out even when the pressure at which the volatile components of the contained product have not evaporated during transportation increases. Enables cost reduction by reducing the manufacturing process. [Structure] A can is formed by inserting a lid into the upper opening of the can body. An elastically deformable holding portion is integrally formed on the inner peripheral edge of the top opening of the can body. An elastically deformable abutment portion that is in pressure contact with the sandwiching portion is integrally formed on the outer peripheral edge of the lid. An engaging portion that engages with the sandwiching portion is integrally formed on a part of the contact portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lid structure for a metal can used for transporting highly volatile products such as paints and solvents.

[0002]

[Prior art]

 In the conventional metal can used for the above-mentioned use, for example, as shown in FIG. 7, an elastically deformable engaged portion 73 having a substantially U-shaped cross section is formed by bending at the inner peripheral edge of the upper surface opening of the can body 71. In addition, an engaging portion 77 having a substantially U-shaped cross section that can engage with the engaged portion 73 is bent and formed on the outer peripheral edge of the lid 75 that is fitted into the upper end opening.

Then, the engaging portion 77 of the lid 75 is elastically deformed and inserted into the engaged portion 73 of the can body 71 to close the upper surface opening of the can body 71 with the lid 75.

[0004]

[Problems to be solved by the device]

 However, in the metal can lid structure described above, when the volatile components of the product volatilize and the internal pressure of the can increases due to vibration and temperature rise during transportation, the internal pressure of the can causes the internal lid to cover. There is a risk that the contents will come off and the contents will leak.

The present invention was devised in order to solve the above-mentioned conventional drawbacks, and its purpose is to achieve a high internal pressure even when the volatile components of the stored product are volatilized. Another object of the present invention is to provide a can lid structure that can be used for safe transportation of products by reliably preventing the product from leaking by keeping the engaged state of the can body and the lid.

[0006]

[Means for solving problems]

 Therefore, in the present invention, in a can in which a lid can be inserted into the upper opening of the can main body, an elastically deformable holding portion is integrally formed on the inner peripheral edge of the upper opening of the can main body, and the outer peripheral edge of the lid is provided with the holding portion. It is characterized in that it is composed of an elastically deformable abutting portion that comes into pressure contact and a lid that has a locking portion that locks a part of the sandwiching portion.

[0007]

[Function of the device]

 Since the present invention is configured as described above, when the lid is inserted into the upper opening of the main body of the can, the nipping portion and the abutting portion that elastically deform each other are pressed against each other. Further, the locking portion provided at the contact portion is locked to the holding portion to prevent the lid from coming off the can body.

[0008]

【Example】

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

FIG. 1 is a perspective view showing the outline of a can body and a lid.

FIG. 2 is a schematic sectional view taken along the line II-II of FIG.

FIG. 3 is a schematic sectional view taken along line III-III of FIG.

The can 1 is composed of a metal can body 3 and a lid 5, and the can body 3 has a bottomed shape and an open top surface.

A first sandwiching portion 7 having a substantially U-shaped longitudinal section that is elastically deformable is bent around the entire inner periphery of the upper portion of the can body 3 with a recess 8 formed therein. The upper part of the inner wall 7a has a round vertical section, and an elastically deformable second sandwiching portion 9 is continuously bent with a predetermined curvature.

The lid 5 has a substantially circular shape with a size that can be inserted into the upper surface opening of the can body 3, and has a first contact portion 11 having a U-shaped vertical cross section on the entire outer peripheral edge of the lid 5. 7 is bent so as to be elastically deformed and inserted. That is, the width of the first contact portion 11 facing the side wall is set to be slightly larger than the width of the first contact portion 7 facing the side wall, and when the first contact portion 11 is inserted into the first contact portion 7. The first holding portion 7 and the first contact portion 11 are pressed against each other by the elastic force of both the first holding portion 7 that is widened and the first contact portion 11 that is pushed and narrowed.

An elastically deformable second contact portion 13 is continuously bent at the outer peripheral edge of the lid 5 corresponding to the inside of the first contact portion 11. That is, the second contact portion 13 corresponds to about 3/4 of the outer peripheral surface of the second holding portion 9, and the cross section having a curvature slightly smaller than the curvature of the second holding portion 9 is bent and formed into a substantially circular shape. There is. When the second contact portion 13 is inserted into the second holding portion 9, the second holding portion 9 and the second contact portion 13 are reduced in diameter. The elastic force of both of the abutting portions 13 makes pressure contact with each other.

Between the lower part of the second abutting part 13 and the flat lid body 15, a locking part 17 projects in the radial direction over the entire circumference and locks with the lower outer peripheral surface of the second holding part 9. It is bent so that

A packing 19 is attached to the inner peripheral surface of the second contact portion 13 facing the upper outer peripheral surface of the second holding portion 9 over the entire circumference.

Next, the operation of the can 1 configured as described above will be described.

FIG. 4 is a schematic vertical sectional view showing a state in which the lid is attached to the can body.

When the lid 5 is pressed against the can body 3 containing the volatile product in a state where the first holding portion 7 and the first contact portion 11 are aligned with each other, the first contact with the first holding portion 7 is made. The elastic force is applied by the two elastic forces of the first holding portion 7 and the first contact portion 11 that are pushed and narrowed as the portion 11 enters.

When the lid 5 is further pressed against the can main body 3, the locking portion 17 slides over the outer peripheral surface of the second holding portion 9 to overcome the second holding portion 9 while reducing the diameter of the second holding portion 9. After that, it is locked to the outer peripheral surface of the lower portion of the second holding portion 9. At this time, the second contact portion 13 is expanded in diameter by the sliding contact of the locking portion 17 with the outer peripheral surface of the second holding portion 9 and is inserted into the second holding portion 9. As a result, the second holding portion 9 and the second contact portion 13 are brought into close contact with each other by the elastic force of both the second holding portion 9 having a reduced diameter and the second contact portion 13 having a larger diameter, and are interposed therebetween. It is made airtight by the packing 19.

When the volatile component of the volatile product evaporates and the internal pressure of the can 1 becomes high due to vibration or high temperature during the transportation of the can 1 having the lid 5 attached as described above, the internal pressure of the second holding part 9 increases. The first holding portion 7 and the first abutting portion 11 and the second holding portion 9 and the second abutting portion 13 which are elastically deformed and press-contact with each other on the locking portion 17 which is locked to the outer periphery of the lower portion and which are elastically deformed in mutually opposite directions. This prevents the lid 5 from coming off the can body 3.

Further, the packing 19 interposed between the second holding portion 9 and the second contact portion 13 keeps the can body 3 and the lid 5 airtight, so that the gas of the vaporized volatile component is discharged to the outside. To prevent the leak.

As described above, in this embodiment, when the lid 5 is inserted into the can body 3, the first holding portion 7 and the first contact portion 11 which are elastically deformed, and the second holding portion 9 and the second contact portion are elastically deformed. It is possible to prevent the lid 5 from coming off from the can body 3 by the locking portion 17 that is locked to the portion 13 and the second holding portion 9. Moreover, the airtight state inside the can body 3 can be maintained by the packing 19 interposed between the second holding portion 9 and the second contact portion 13.

Claim 3 FIG. 5 is a schematic vertical sectional view of the can body and the lid.

FIG. 6 is a schematic longitudinal sectional view of the can body with the lid inserted therein.

An elastically deformable holding portion 53 hangs down at a predetermined height around the entire inner peripheral edge of the upper surface opening of the can main body 51, and then a lower end portion is bent so as to face outward. The sandwiching portion 53 is bent such that the lower portion is slightly inwardly inclined with respect to the upper portion in a state where a lid 55 described later is not attached.

On the other hand, an abutting portion 57 is bent and formed so as to stand up at a predetermined height all around the outer peripheral edge of the lid 55. The contact portion 57 is bent so that the upper portion is slightly inclined outward with respect to the lower portion. A locking portion 59 is formed on the entire circumference of the lower portion of the contact portion 57 so as to project in the radial direction so as to be locked to the lower end portion of the sandwiching portion 53. A packing 61 is attached to the outer peripheral surface of the contact portion 57 facing the sandwiching portion 53 over the entire circumference.

When the lid 55 is attached to the upper surface opening of the can main body 51, the sandwiching portion 53 and the contact portion 57 are elastically deformed so that the sandwiching portion 53 and the contact portion 57 are brought into close contact with each other and sandwiched by the elastic force of the sandwiching portion 53 and the contact portion 57. The locking part 59 is locked to the lower end of the part 53 to prevent the lid 55 from coming off the can body 51. Further, since the packing 61 is interposed between the sandwiching portion 53 and the contact portion 57, the can main body 51 and the lid 55 are kept airtight.

In the above description, the engaging portion 17 is formed below the second contact portion 13 and the engaging portion 59 is formed below the abutment portion 57 over the entire circumference. 59 may be formed so as to project in the radial direction at equal parts of the second contact portion 13 and the contact portion 57.

In the above description, the can body 3 has a substantially cylindrical shape with a bottom and an open upper surface as shown in FIG. 1, but the can body of the present invention is not limited to this shape, and for example, It can be implemented even in the shape of a square pole with an open top at the bottom.

[0032]

[Effect of device]

 For this reason, the present invention ensures that even if the volatile components of the stored product volatilize and the internal pressure rises, the product can be prevented from leaking by maintaining the engagement state between the can body and the lid. It is possible to provide a can lid structure that can be used to transport goods safely.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a can body and a lid.

FIG. 2 is a schematic sectional view taken along the line II-II of FIG.

FIG. 3 is a schematic sectional view taken along line III-III of FIG.

FIG. 4 is a schematic vertical sectional view showing a state in which a lid is attached to the can body.

FIG. 5 is a schematic vertical sectional view of a can body and a lid.

FIG. 6 is a schematic vertical sectional view of the can body with a lid inserted therein.

FIG. 7 is a schematic vertical sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 can 3 can main body 5 lid 7 1st clamping part 9 2nd clamping part 11 1st contact part 13 2nd contact part 17 locking part

Claims (4)

[Scope of utility model registration request] 1. A can in which a lid can be fitted into an upper opening of a can main body, wherein an elastically deformable holding portion is integrally formed at an inner peripheral edge of the upper opening of the can main body, and the outer peripheral edge of the lid is pressed against the holding portion. A lid structure for a can, comprising an elastically deformable contact portion and a lid having a locking portion that locks a part of the sandwiching portion. 2. The sandwiching section has a first sandwiching section bent from the inner peripheral edge of the upper opening into a substantially U-shaped section having a predetermined width, and a substantially circular cross section with a predetermined curvature continuous to the first sandwiching section. The first contact portion and the first contact portion are each composed of a bent second holding portion, and the contact portion is bent into a substantially U-shaped cross section so that the contact portion can be elastically deformed with respect to the first holding portion. The can lid structure according to claim 1, comprising a second abutting portion that is continuous and is elastically deformed and inserted into an outer peripheral surface of at least a half circumference of the second holding portion. 3. The holding portion has a shape that hangs from the inner peripheral edge of the upper opening at a predetermined height, and the contact portion stands up from the outer peripheral edge so as to substantially match the height of the holding portion, and then on the top of the can. 2. The can lid structure according to claim 1, wherein a locking portion having a locking shape and integrally provided at a lower portion of the contact portion to lock at a lower end of the sandwiching portion. 4. A can lid structure according to claim 1, wherein an airtight material is provided between the pinching part of the can and the contact part of the lid.