JPH0122597Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a portable heat-insulating container used to keep relatively large volumes of liquids such as drinking water heated or cooled for long periods of time. .

(b) Prior art When using a heat-retaining container, the multiple legs provided at the bottom are opened to ensure a space for inserting a container such as a pot between the liquid dispensing tool and the installation surface, and to store the container. In such cases, the legs are closed inward to reduce the storage size.

These folding legs had to be engaged and fixed in their respective positions when the legs were opened and when the legs were closed, so that they would not rotate naturally.

For this reason, the conventional method for engaging and fixing the legs of a heat insulating container was to screw an elastic metal body to the lower part of the leg with screws, and use the elasticity of the metal body to engage and fix the legs at each position (in practice). (Refer to Publication No. 35-20749 and Publication No. 2342-2003).

However, this method has the problem that the screw rotates in the direction of engagement and disengagement during long-term use, and eventually the screw and the metal elastic body fall off from the fixing part, making it impossible to engage and fix when the legs are opened or closed. had.

In addition, since the screws are used for fixation, the number of component parts increases and assembly work is required, which is a factor in increasing costs.

(c) Purpose of the invention This invention eliminates the need to screw the metal leaf spring pieces into place with mounting members such as screws to prevent the metal leaf spring pieces from falling off during use, and also allows the legs to be opened and closed with a single touch. In addition, the durability of the leg opening/closing part is improved without applying excessive force to the locking part that holds the legs in the open and closed positions, and the structure is resistant to repeated opening/closing strength, and the number of parts is significantly reduced. The purpose of the present invention is to provide a portable heat-retaining container that can achieve the following.

(d) Structure of the device This device is provided with a leg that is pivotally supported by a rotating shaft that engages and is fixed to the peripheral wall of the leg attachment portion on the lower surface of the bottom member of the heat insulating container, and that the leg is attached to the upper end of the leg. The base end of a metal plate spring piece, which is a separate member, is press-fitted, and an arcuate sliding surface is integrally formed on the upper surface of the rotating shaft of the leg mounting portion, and the inner side of this arcuate sliding surface A leg opening locking groove is provided in the outer part, and a closing leg locking groove is provided in the outer part, and the free end side of the flexibly displacing metal leaf spring piece is pressed against the sliding surface around the rotating shaft. In addition to forming a structure to prevent the leaf spring piece from separating,
The portable heat-insulating container is characterized in that the free end side of the leaf spring piece is configured to be able to engage with the open leg locking groove and the closed leg locking groove.

(e) Effects of the invention According to this invention, the metal leaf spring piece that engages and fixes the leg in the open and closed positions is fixed to the upper end of the leg without using any mounting members such as screws. be able to.

Therefore, even after long-term use, the leaf spring piece will not fall off from the fixed part due to the return rotation of the screw, completely preventing the inability to engage and fix the legs when the legs are opened or closed, and the number of component parts is significantly reduced. At the same time, assembly work time such as fixing with screws can be saved, making it possible to significantly reduce costs.

Moreover, when opening and closing the legs in the open position in the closing direction or in the opening direction in the closed position,
Since the free end of the metal plate spring piece is flexibly displaced by an external operating force, the legs can be opened and closed without any unreasonable force acting on the opening and closing leg locking grooves. Since it can be done with one touch, it has the effect of improving the durability of the leg opening/closing part.

In addition, the above-mentioned leaf spring piece is made of metal and is press-fitted into the upper end of the leg body, so it goes without saying that no installation screws are required, and the repeated opening and closing strength is significantly higher than that of a resin piece. It has a strong effect.

Furthermore, since the above-mentioned arc-shaped sliding surface is integrally formed with the bottom member, there is no need to separately attach a guide means to the bottom member, and there is no need for any mounting screws, etc.
This has the effect of significantly reducing the number of parts and assembly man-hours.

(F) Embodiment of the invention An embodiment of the invention will be described below in detail based on the drawings.

The drawing is a portable thermal container (hereinafter referred to as thermal container)
As shown in FIGS. 1 to 3, an outer case 2 of this heat-retaining container 1 has an inner container 4 disposed in its internal space via a heat insulating material 3. As shown in FIGS.

Further, a lid 5 for injecting liquid into the inner container 4 is removably screwed onto the upper end of the outer case 2.

Furthermore, handles 6 for transporting the heat-insulating container 1 are pivotally attached to both sides of the upper end so as to be rotatable in the front-rear direction, and a bottom member 7 is fixed to the lower end.

The aforementioned bottom member 7 is provided with a liquid pouring tool 8 which communicates with the bottom of the aforementioned inner container 4 and pours out the injected contents to the outside at the front central portion thereof so as to be openable and closable.

Further, as shown in FIG. 2, leg attachment portions 9 are integrally formed at four diagonally equally spaced positions on the bottom surface of the bottom member 7, facing downward.

The leg mounting portion 9 described above is formed by a U-shaped peripheral wall 10 parallel to the diagonal line and open at the center side.
A pair of rotation holes 11, 11 are provided on the left and right sides of this peripheral wall 10.
is provided.

Furthermore, an arc-shaped sliding surface 12 centered on the rotation holes 11, 11 is provided on the upper surface of each of the rotation holes 11 described above.

This sliding surface 12 is integrally formed with the bottom member 7, the leg mounting portion 9, and the peripheral wall 10 from resin.
A leg locking groove 13 is provided on the inner side of this sliding surface 12.
Closing leg locking grooves 14 are formed in the width direction on the outer side, and are engaged with and disengaged from the free ends 16a of the metal plate spring pieces 16 of the legs 15 to engage and fix the legs 15 in the open and closed positions, respectively. do.

The aforementioned leg body 15 is pivotally supported by a rotation shaft 17 inserted through the aforementioned rotation holes 11, 11, and the base end side of the aforementioned metal plate spring piece 16 is press-fitted into a fixing hole 18 provided at the upper end thereof. It is engaged and fixed.

The above-mentioned leaf spring piece 16 is formed by bending a spring material such as stainless steel into a substantially square shape, and its proximal end is press-fitted into the above-mentioned fixing hole 18, and its free end 16a is fitted into the above-mentioned fixing hole 18. The leaf spring piece 16 is in pressure contact with the sliding surface 12 of the leg body 15, and due to this pressure contact, the leaf spring piece 16 is fixed so as not to be detached from the aforementioned leg body 15.

Therefore, when the leg body 15 is rotated outward, the leaf spring piece 16 engages with the leg locking groove 13 with a light moderation, and this engagement causes the leg body 15 to be attached to the aforementioned peripheral wall 10.
The legs are kept in the open state as shown in FIG. 3 by contacting the closing portion 19 at the end.

Moreover, if the leg body 15 is rotated inward, the leaf spring piece 1
6 engages with the aforementioned leg closing locking groove 14 with a light moderation, and this engagement holds the leg body 15 in the closed state.

Moreover, when opening and closing the legs 15 in the open position shown by solid lines in FIG. 3 in the closing direction, or in the opening direction when the legs 15 in the closed position shown by phantom lines in FIG.
The above-mentioned leaf spring piece 16 is activated by the user's external operating force.
Since the free ends 16a of the legs are flexibly displaced, no unreasonable force is applied to the open leg locking grooves 13 and the closed leg locking grooves 14, especially the groove edges, and the legs 15 can be opened and closed with a single touch. This has the effect of improving the durability of the leg opening/closing part.

Furthermore, in this heat-insulating container 1, mounting members such as screws for attaching and fixing the leaf spring pieces 16 can be eliminated, making it possible to reduce costs, as well as completely preventing detachment of the leaf spring pieces 16 due to return rotation of the screws, resulting in a low cost. It has become possible to manufacture high quality products.

In addition, since the above-mentioned leaf spring piece 16 is made of metal and is press-fitted into the upper end of the leg body 15, it goes without saying that no installation screws are required, and the repeated opening/closing strength is lower than that of a piece made of resin. has a particularly strong effect.

Furthermore, the above-mentioned arcuate sliding surface 12 is formed on the bottom member 7.
Since it is integrally formed with the bottom member 7, there is no need to provide a separate guide means on the bottom member 7, and there is no need for any mounting screws, etc., and there is an effect that the number of parts and the number of assembly steps can be significantly reduced.

In addition, although the structure does not use any mounting screws as described above, the plate spring piece 16 and the sliding surface 12
The pressure contact with the plate spring 16 has the effect of reliably preventing detachment of the leaf spring 16.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; Fig. 1 is a side view of a portable heat-insulating container, Fig. 2 is a bottom view of Fig. 1, and Fig. 3 is a sectional view of essential parts of the legs in an open state. be. 9... Leg mounting portion, 10... Peripheral wall, 12... Sliding surface, 13... Open leg locking groove, 14... Closed leg locking groove, 15... Leg body, 16... Leaf spring piece, 16a...
... Free end portion, 17 ... Rotating shaft.

Claims (1)

[Claims for Utility Model Registration] A leg body 15 is provided which is pivotally supported by a rotating shaft 17 that is engaged and fixed to a circumferential wall 10 of a leg attachment part 9 on the lower surface of the bottom member 7 of the heat insulating container 1, and the upper end of this leg body 15 is provided. A base end portion of a metal plate spring piece 16, which is a separate member from the leg body 15, is press-fitted into the upper surface of the rotary shaft 17 of the leg attachment portion 9, and an arcuate sliding surface 12 is integrally formed on the upper surface of the rotating shaft 17 of the leg attachment portion 9. An open leg locking groove 13 is provided on the inner side of the arcuate sliding contact surface 12, and a closed leg locking groove 14 is provided on the outer side of the arcuate sliding surface 12, and the free end portion of the metal leaf spring piece 16 that is flexibly displaced is provided. 16a side is the sliding surface 1 with the rotation shaft 17 as the center.
2 to form a structure to prevent the leaf spring piece 16 from coming off, and to be able to engage with the opening leg locking groove 13 and the closing leg locking groove 14 on the free end 16a side of the leaf spring piece 16. A portable thermal container featuring: