JPS6136180Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a tabletop mixer with an improved switch mechanism, so that the switch can be opened and closed with a simple push-down operation.

The details will be explained below based on the drawings. The drawings illustrate a tabletop mixer according to the invention, which consists of a cup 1 and a stand 2 on which the cup 1 is detachably mounted.

In Figures 1 to 3, a cup 1 is made of transparent plastic and has a cylindrical shape, and has parallel steps 3 and 4 on its inner and outer surfaces at a constant pitch in the height direction.
This is used as a scale. The upper end of the opening of the cup 1 is closed by a top lid 6 having a spout 5, which can be opened and closed. For example, ingredients to be stirred such as vinegar, salad oil, and a small amount of salt for making a dressing can be poured into the cup 1 by removing the top lid 6. be done. A bottomed recess 7 is formed in a part of the top surface of the upper lid 6, and this recess 7
A large number of small holes 8 are provided at the bottom of the cup 1, and when miso, etc. to be mixed into the dressing is placed in the recess 7 in advance and pressed with a presser plate 9, it is extruded into the cup 1 through the small holes 8. It is ready for input.

Further, a bottom plate 10 is fitted into the bottom opening of the cup 1 from below, and the bottom plate 10 is fixed with a cup base 11.

In FIGS. 3 and 4, a rotating shaft 12 is inserted through the center of the bottom plate 10, and a rotating table 14 having a ring-shaped stirring member 13 standing upright is fixed to the protruding upper end of the rotating shaft 10. A coupling ring 15 is fixed to the lower end of the shaft 12. Cup base 11
is formed into a short cylindrical shape, and is screwed to the bottom outer circumference of the cup 1 with a screw 16 provided on the inner circumference of the upper end,
The bottom surface of the periphery of the bottom plate 10 is pressed and fixed to the bottom bottom surface of the cup 1 via a seal packing 18 by a stepped plate 17 integrally formed and projecting from the middle part of the inner periphery in the height direction. In such a case, the cup base 11 is removed from the cup 1 by rotating it in the direction in which the screw 16 loosens, and by this removal, the bottom plate 10 can also be removed, allowing the stirring member 13 to be replaced or cleaned.

The stand 2 is formed into a cylindrical shape with an open bottom, and is equipped with a motor 19 and a battery 20 that is a power source for driving the motor 19.
are built into the top and bottom. The motor 19 is housed in a motor box 30 fixed inside the stand 2, and the shaft 21 of the motor 19 is transmitted through a drive source 23 supported by a bearing 22 at the center of the upper surface of the stand 2 and reduction gears 24, 25. and the drive shaft 23
A coupling ring 26 is fixed to the protruding upper end of the
When the bottom of the cup 1 is connected to the top surface of the stand 2, the cup rings 15 and 26 are engaged with each other, and the rotation shaft 12 and the drive shaft 23 are connected.

Cup 1 and stand 2 are bayonet connected. That is, when the vertical groove 28 formed on the inner periphery of the bottom of the cup base 11 is inserted into the claw 27 fixed to the upper surface of the stand 2, and when the cup 1 is slightly rotated around the rotating shaft 12, the claw 27 is inserted into the vertical groove 28. It is adapted to engage in a circumferential lateral groove 29 formed through the groove.

The battery 20 is attached to a battery holder 31 fixed to the lower surface of the motor box 30 from the open bottom of the stand 2. The open bottom surface of the stand 2 is covered with a stand base 32. This base 32 consists of a base body 32a and a base seat 47, and a coupling hole 3 is provided in a recess 33 at the center of the bottom surface of the base body 32a.
4, and a set screw 35 inserted into this coupling hole 34 from the bottom is screwed into a cylindrical nut 36 protruding downward from the battery holder 31, so that it can be attached to and detached from the open bottom of the stand base 32. Fitted and installed. When the set screw 35 is removed, the stand base 32 is removed, and the battery 20 can be taken in and out of the battery holding base 31.

A switch mechanism for a motor drive circuit is provided between the stand 2 and the stand base 32. To explain this switch mechanism, see Figures 5 to 8.
In the figure, two batteries 20 are mounted on the lower surface of a battery holding stand 31 in a series-connected state. The negative and positive terminals of both batteries 20 connected in series are connected to electrode plates 37 and 38 fixed to the battery holding stand 31, respectively, and the motor 19 is connected in series to one electrode plate 37, and the motor 19 is connected to the other electrode plate 38 in series. The open end of 19 is connected to switch contacts 39 and 40. Switch contact 3
9 and 40 extend above protrusions 41 and 42 protruding from the lower surface of the battery holding stand 31. A cross-shaped shorting piece 43 made of a strong conductive spring plate is fixed to the screw 44 on the upper surface side of the stand base main body 32a, and each free tip 43a of the shorting piece 43 connects the stand base 32 to the stand 2. When fitted and attached to the bottom of the opening as described above, the switch contact 39,
40 and are spaced apart from each other.
As shown in FIG. 5, an annular groove 45 is formed on the lower surface of the stand base main body 32a, and four through holes 46 are formed on the upper surface of the stand base 32 at each of the four free ends of the short-circuiting pieces 43. It is provided in correspondence with the lower position of the portion 43a and in communication with the annular groove 45. The ring-shaped base seat 47 made of rubber is loosely fitted into the annular groove 45, and the base seat 47 is loosely fitted into the annular groove 45.
The four pin members 48 erected from 7 are connected to each through hole 4.
Insert into 6. Each pin member 48 has a metal ring 49 superimposed and bonded to the upper surface side of the base seat 47.
It consists of a screw 51 protruding from a hole 50 formed in the ring 49, and a flanged nut 52 that tightens the screw 51 onto the metal ring 49. The flanged nut 53 of the nut 52 is engaged with the upper end of the opening of the through hole 46. By fitting together, the base seat 47 is prevented from slipping out downward from the annular groove 45. The tip of the pin member 48 protruding from the top surface of the stand base 32 is pressed against the bottom surface of each free tip 43a of the short circuit piece 43, and the strong elasticity of the free tip 43a due to this contact causes the base seat 47 to is pushed down until the flange 53 abuts and engages with the upper end surface of the stepped opening of the through hole 46, and the entire stand base 32, stand 2, and cup 1 are pushed up from the base seat 47 and are connected to the annular groove. A distance S is created between the groove bottom and the groove bottom of 45. The elasticity of the short-circuiting piece 43 is strong enough to overcome the weight of the cup 1, the stand 2, and the materials to be stirred put into the cup 1.

When using this, place it on a tabletop or the like, and when you hold the cup 1 and apply a downward force against the elasticity of the short-circuiting piece 43, the cup 1, stand 2, and stand base body 32a are depressed by the distance S. The base seat 47 comes into contact with the bottom of the annular groove 45, and the free tip 43a of the short circuit piece 43 is bent by the pin member 48 and comes into contact with the switch contacts 39, 40 to close the drive circuit. Then, the motor 19 is driven, the stirring member 13 rotates, and the materials to be stirred put into the cup 1 are mixed and stirred. This stirring continues as long as the cup 1 is held down by hand.

When you release your hand from the cup 1, the elasticity of the free tip 43a of the short-circuiting piece 43 causes the stand base body 3 to
2a, stand 2 and cup 1 are all pushed up again. This pushing up causes the switch contacts 39 and 40 to separate from the free tip 43a of the shorting piece 43, and the motor 19 stops.

In addition, in the above embodiment, the stand base main body 3
2a and the base seat 47, a combination of a short-circuiting piece 43 having strong elasticity and a pin member 48 constitutes a push-up biasing means. Therefore, the push-up biasing means can be easily assembled with a small number of members since the short-circuiting piece 43 also serves as the push-up biasing means. However, it is not limited to this, and in addition, for example, stand 2
A spring member separate from the short-circuiting piece 43 is interposed between the cup 1 and the stand base 32 so that the switch contacts 39, 40 and the shorting piece 43 are separated from each other by the elasticity of the spring member. may be biased upward.

As described above, according to this invention, the switch contacts 39, 4 facing the bottom surface of the opening of the cup 1 are
0 and a stand base 32 attached to the bottom surface of the opening.
The upper short-circuit piece 43 is normally separated from the upper short-circuit piece 44, but when the stand 2 is pressed down together with the cup 1, they come into contact with each other and the switch contacts 39, 40 are short-circuited, so that the switch can be opened and closed very easily as compared with the operation of moving a switch knob up and down or left and right as in the conventional tumbler switch, and the switch is easy to use.

[Brief explanation of the drawing]

The drawings illustrate the tabletop mixer according to the present invention, in which Fig. 1 is a partially cutaway front view, Fig. 2 is a plan view of the top cover, Fig. 3 is a sectional view of the stand, and Fig. 4 is a cup, An exploded perspective view of the cup base and stand, Figure 5 is an enlarged sectional view of the switch mechanism of the stand, Figure 6 is an exploded perspective view of the stand base,
FIG. 7 is a perspective view of the battery holder seen from below, and FIG. 8 is a perspective view of the battery holder seen from above. 1...Cup, 2...Stand, 19...Motor, 20...Battery, 32...Stand base, 3
9, 40...Switch contact, 43...Short circuit piece.

Claims (1)

[Scope of utility model registration request] It has a cup 1 having a stirring member 13 therein, a stand 2 having built-in switch contacts 39 and 40 for opening a drive motor 19 of the stirring member 13 and a part of the drive circuit, and a short-circuiting piece 43. Piece 4
A stand base 32 is attached to the bottom of the stand 2 so that 3 faces the switch contacts 39 and 40, and the switch contacts 39 and 40 and the short circuit piece 43
and a means for pushing up and urging the cup 1 and the stand 2 so that they are separated in a normal state, and by pushing down the stand 2 against the urging force of the push-up and urging means, the switch contacts 39 and 40 are activated. A tabletop mixer characterized in that a short-circuit is caused by contacting a short-circuiting piece 43.