JPH0613647U - Double tube cup - Google Patents

Abstract

(57) [Summary] [Purpose] To ensure that the inner cylinder of a double-tube cup in which the inner and outer cylinders are separably combined is held. [Structure] A bottomed container-like inner cylinder 2 is surrounded by an outer cylinder 5 with a gap therebetween, and a pressing piece 4 for pressing a base portion 1 provided at the lower end of the inner cylinder 2 is provided at the lower end of the outer cylinder 5. . A cap-shaped tightening member 7 is detachably attached to the bayonet under the outer cylinder 5. A pressure projection 6 having a contact surface 6a engageable with the outer contact surface 4a of the pressing piece 4 is provided inside the tightening member 7.
Further, unevenness 8 is formed on either or both of the contact surfaces 4a and 6a to increase the contact resistance.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cup composed of an inner and outer double cylinders.

[0002]

[Prior art]

 A cup having a double structure is known as seen in Japanese Utility Model Publication No. 38-8829. However, in the conventional double cup, water drops are accumulated between the two cylinders due to a temperature difference, so that it is cloudy or dirty. There is a problem that it is difficult to wash when it gets dirty.

As a measure against dirt, it is only necessary to make the inner and outer cylinders separable. However, since a connecting structure is required, the structure becomes complicated, and dirt easily accumulates at the connecting part, or loosens or comes off due to a temperature difference. The problem arises.

[0004]

[Problems to be solved by the device]

 The present invention has been made by paying attention to the above points, and its problem is that the inner cylinder and the outer cylinder can be separated, and the inner cylinder does not easily come off or come off due to the temperature difference, and the heat resistance is also good. There's something to do.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, the present invention provides a double-walled cup with an inner cylinder 2 having a bottomed container for containing a liquid and having a small-diameter base part 1 protruding downward from the bottom part. The inner cylinder 1 has a cylindrical shape surrounding the circumference of the inner cylinder 1 with a gap 3 in between, and at its lower end, a plurality of pressing pieces 4 that can come into contact with the outer surface of the base part 1 are projected in the circumferential direction at required intervals. The formed outer cylinder 5 and a bottom lid shape in which a bayonet is attachable / detachable at a lower end portion of the outer cylinder 5, and a pressurizing protrusion 6 for pressurizing the pressing piece 4 inwardly to tighten the base portion 1. Of the pressing pieces 4 and the tightening members 7 projecting from the inner circumference at the same intervals as the pressing pieces 4. When the tightening members 7 are rotated with respect to the pressing pieces 4, the pressing pieces 4 and the pressurizing projections 6 are In order to increase the contact pressure, the contact surfaces 4a, 6a are inclined with respect to the circumferential direction, and the concavo-convex 8 for increasing the contact resistance is provided on one of the inclined surfaces. In which it took measures that formed.

[0006]

【Example】

 A description will be given below with reference to the drawings. The double cylinder cup according to the embodiment of the present invention has a structure in which the inner cylinder 2 can be separated and joined by inserting and removing it from the upper opening of the outer cylinder 5.

The inner cylinder 2 is a bottomed container that directly contacts the liquid. The illustrated one has a body portion 10 in the middle, an upper end portion 11 has a larger diameter than that, and a lower end portion is a base portion 1 having a small diameter, and steps due to the difference in diameter are formed vertically.

Since the large-diameter upper end portion 11 projects from the upper end of the outer cylinder 5 described later and contacts the mouth, the temperature of the liquid is easily transmitted. Further, since the lower part of the small-diameter base part 1 has a larger diameter, it is formed in an inverted taper shape with a narrow upper part (see FIGS. 1 and 2).

The outer cylinder 5 has a size that surrounds the body 10 of the inner cylinder 2 with a gap 3 in between, and is a tapered cylinder having no bottom. The outer cylinder 5 is capable of locking the large-diameter upper end portion 11 of the inner cylinder 1 at the upper step portion 12 around the upper end opening, and the body portion 10 at the lower step portion 13 protruding inward of the lower part.

The pressing piece 4 is formed so as to project downward from the lower end of such an outer cylinder 5. The pressing pieces 4 are in contact with and hold the lower end part 1 of the inner cylinder 2, and are provided at three positions in the circumferential direction at regular intervals, and are bent by being pressed inward in the radial direction, Make a stop. The contact surface with the inner cylinder 2 may be provided with a pressure contact protrusion 14 protruding inward (see FIG. 2).

The tightening member 7 is provided for closing the bottom opening of the outer cylinder 5 and for pressing the pressing piece 4, and is attached to the lower end of the outer cylinder 5 by the bayonet attaching / detaching portion 9. The attachment / detachment part 9 is provided at one outer circumferential edge of the outer cylinder 5 at regular intervals in the circumferential direction, and at the inner circumferential part of the upper end of the tightening member 7 engageable with the circumferential groove 9a at regular intervals. And the other circumferential claw 9b provided on the. At the innermost portion of the circumferential groove 9a, a stopper 9c for stopping the progress of the claw 9b is formed.

The contact surface 4 a on the outer surface of the pressing piece 4 at three places and the contact surface 6 a on the inner surface of the tightening member 7 provided for pressing the pressing piece 4 rotate the tightening member 7 in the circumferential direction. Since the inner cylinder base portion 1 is pressed inward in the radial direction by the operation, the surface is inclined with respect to the circumferential direction.

The pressing piece contact surface 4a projects outward in the circumferential direction in a wedge shape from the front in the rotational direction, and the contact surface 6a of the pressing projection 6 inclines so that the projection surface in the rotational direction projects into the wedge inward in the circumferential direction. is doing. Further, the contact surface 4a of the pressing piece 4 is formed to be stronger than the other contact surface 6a, and the unevenness 8 formed of a vertical groove is provided to the rear end portion of the pressurizing protrusion 6. 6b bites into the unevenness 8 to increase resistance.

The position of the contact surface 4a of the pressing piece 4 and the position of the circumferential groove 9a of the bayonet attachment / detachment portion 9 are substantially the same (see FIG. 1), and the other circumferential portion is located between the circumferential grooves 9a. When the tightening member 7 is attached with the direction claw 9b positioned, the contact surface 4a of the pressing piece 4 is between the outer contact surfaces 6a, 6a, and the tightening member 7 is rotated to completely engage the bayonet attaching / detaching portion 9. The outer contact surface 6a presses the inner contact surface 4a inward.

In the double-tube cup thus configured, the inner tube 2 is inserted into the outer tube 5, the upper end portion 11 of the inner tube is placed in the upper step portion 12 of the outer tube, and the body portion 10 of the inner tube is The lower end portion 1 of the inner cylinder 2 is housed inside the pressing piece 4 at the lower end of the outer cylinder while being fixed to the lower portion 13 of the outer cylinder 5.

The tightening member 7 is attached to the lower end of the outer cylinder on the outside of the pressing piece 4, and is rotated clockwise in FIG. 3 to engage the circumferential claw 9b with the circumferential groove 9a, and at the same time contact the outer side. The inner contact surface 4a is pressed by the surface 6a, and the rear end portion 6b of the outer contact surface 6a bites into the unevenness 8 of the inner contact surface 4a, thereby fixing the inner cylinder 2.

Since the inner cylinder 2 is mainly made of glass and the outer cylinder 5 is made of synthetic resin, if the inner cylinder 1 is likely to come off due to the difference in coefficient of thermal expansion, the tightening ring 5 is operated. Can be tightened further. At this time, since the stopper 9c prevents overtightening, the pressing piece 4 is not excessively deformed.

[0018]

[Effect of device]

 Since the present invention is constructed and operates as described above, the cup composed of the inner and outer double cylinders can be easily disassembled for easy maintenance, while the inner cylinder 2 and the outer cylinder 5 are combined. When the tightening member 7 is integrated, the contact surfaces 4a and 6a are firmly fixed under the high contact resistance of the unevenness 8 so that a temperature difference occurs and the outer cylinders 2 and 5 are easily pulled out from each other. Even in such a situation, it can be used with peace of mind, and at the same time, it has remarkable practical effects such as improved heat resistance.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a double-walled cup according to an embodiment.

FIG. 2 is a vertical sectional view of an assembled state.

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

FIG. 4 is a side view showing an outer cylinder and a tightening member separately.

[Explanation of symbols]

 1 Lower part of inner cylinder 2 Inner cylinder 3 Gap 4 Holding piece 5 Outer cylinder 6 Pressurizing projection 7 Tightening member 8 Unevenness

Claims (3)

[Scope of utility model registration request] 1. An inner cylinder 2 having a bottomed container shape for containing a liquid and provided with a small-diameter base part 1 projecting downward from the bottom part.
And a cylindrical shape that surrounds the inner cylinder 1 with a gap 3 in between, and a plurality of pressing pieces 4 that can come into contact with the outer surface of the base part 1 at the lower end thereof are projected in the circumferential direction at required intervals. Outer cylinder 5 formed by
And a pressing projection 6 for pressing the pressing piece 4 inward to tighten the base portion 1 and having a bottom lid shape in which a bayonet is detachable at the lower end of the outer cylinder 5. And the tightening members 7 provided on the inner circumference at the same number and at the same intervals, so that when the tightening member 7 is rotated with respect to the pressing piece 4, the contact pressure between the pressing piece 4 and the pressurizing projection 6 increases. A double cylinder cup in which the contact surfaces 4a, 6a are inclined with respect to the circumferential direction, and the concavo-convex 8 for increasing the contact resistance is formed on one or both of the contact surfaces. 2. The contact surface 6a of the pressing projection 6 has a stronger inclination than the contact surface 4a of the pressing piece 4, and the rear end 6b of the pressing projection 6 contacts the pressing piece 4. Unevenness 8 formed on the surface 4a
2. The device according to claim 1, which is formed so as to bite into
Heavy cylinder cup. 3. The bayonet attachment / detachment portion 9 is formed in a circumferential groove 9a formed in a lower end portion of the outer cylinder 5 and in a circumferential direction in which the groove 9a is formed in an inner circumference of a rim of the tightening member 7. The double-walled cup according to claim 1, further comprising a stopper 9c which is formed of the claw 9b and which stops the movement of the claw 9b at the innermost portion of the circumferential groove 9a.