JPS6312832Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an electric mixer for use in general households.

Structure of conventional example and its problems In conventional electric mixer, Fig. 1, Fig. 2
As shown in FIGS. 3 and 3, the lid 4 that covers the top opening of the mixer container 2 is made of soft plastic such as polyethylene resin, and has an inner diameter slightly larger than the inner diameter ΦD of the top opening of the mixer container 2. Thin ribs 5 with outer diameter Φa > ΦD are integrally molded,
The peripheral edge of the rib 5 is in contact with the inner wall of the opening to maintain the position of the lid 4 relative to the mixer container 2. However, since the mixer often stirs not only room-temperature ingredients but also hot ingredients such as soup and cold ingredients such as juice, the outer diameter of the rib 5 on the peripheral wall of the lid 4 changes due to the heat cycle. Since it is smaller than the inner diameter of the upper end opening and a gap is created between it and the inner wall of the opening, Φa′<
ΦD: There was a problem that the lid could not be held and the lid would fly up during stirring, causing the material to scatter.
Furthermore, if the outer diameter of the rib 5 of the lid 4 is increased in anticipation of shrinkage, the fit with the mixer container 2 will be tight in the initial state, so this is not a realistic solution.

Purpose of the invention The present invention solves these conventional problems and has a lid structure that allows the lid to be retained in the mixer container even when shrinkage occurs due to thermal cycles, and prevents materials from scattering during use. It attempts to provide an electric mixer.

Structure of the invention The present invention includes a mixer container in which a cutter is rotatably installed, and a lid that covers the top opening of the mixer container. An electric mixer is constructed by integrally molding a circular rib whose dimensions are determined so that the long axis after heat shrinkage is slightly larger than the inner diameter of the opening and the shorter axis is smaller than the inner diameter. Therefore, at the beginning of use, the long axis of the oval rib is considerably larger than the inner diameter of the opening of the container, but the shorter axis is slightly larger than the inner diameter, allowing the lid to be inserted into the container without strain, and allowing long-term use. After heat shrinkage due to
The insertion position of the lid is maintained by the longer diameter of the rib, which is larger than the inner diameter of the opening.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In FIG. 4, 11 is a base with a built-in motor, 12 is a top-open mixer container with a cutter 13 rotatably mounted on the inner bottom, and 14 is a lid that covers the top opening of the mixer container 12.

FIG. 5 shows a cross section of this lid, and FIG. 6 shows its back surface. This lid 14
is molded from a soft resin such as polyethylene, and a plurality of thin ribs 15 are integrally molded on the peripheral wall on the back side that is to be inserted into the opening of the container. This rib 15 has an elliptical shape, and its short axis Φb is initially slightly larger than the inner diameter ΦD of the upper end opening of the mixer container 12, and is smaller than the inner diameter of the mixer container 12 after heat shrinkage. . Further, the major axis has a dimension relationship of C'>ΦD, which is slightly larger than the inner diameter of the mixer container 12 even after contraction. These plurality of ribs 15 are provided in a positional relationship that is angularly shifted from each other. Therefore, after heat shrinkage, the longer diameter portion of the rib 15 holds the mixer container 12 together. In addition, the fit between the lid and the container opening will be a little stiff at the beginning of use, but since the outside diameter is not increased all around, but only in one part, these long diameter parts are well flexible. Therefore, there is no problem in practical use.

Effects of the Invention As is clear from the above examples, the electric mixer of the present invention has an outer circumferential rib on the back wall of the lid that covers the upper opening of the mixer container, which is slightly larger than the inner diameter of the upper opening of the mixer container even after heat shrinking. Since it is shaped like an ellipse, with the long axis being the diameter that is related to the dimensions, it can maintain its attachment to the mixer container even after heat shrinkage, and the lid will not fly up during stirring and the material will not scatter. do not have. Furthermore, since the entire circumferential diameter of the rib is not increased, but only a portion of the diameter is increased, there is no possibility that the fitting will be stiff at the initial stage and the lid will not close.

[Brief explanation of the drawing]

Figure 1 is a cutaway front view of a conventional electric mixer, Figure 2 is a cutaway view of the lid of the mixer, and Figure 3 is a cutaway view of the lid of the mixer.
The figure is a plan view of the lid, FIG. 4 is a cutaway front view of an electric mixer according to an embodiment of the present invention, FIG. 5 is a cutaway view of the lid of the mixer, and FIG. 6 is a plan view of the lid. 12...Mixer container, 13...Cutter, 1
4...Lid, 15...Oval rib.

Claims (1)

[Scope of utility model registration request] A mixer container has a cutter rotatably installed therein, and a lid that covers an upper end opening of the mixer container, and a back side circumferential wall of the lid that should protrude into the upper end opening of the container has an expected major axis after heat shrinkage. An electric mixer integrally formed with a circular rib whose dimensions are slightly larger than the inner diameter of the opening and whose short axis is smaller than the inner diameter.