JP2020116047A - Rotary crushing and mixing cooker - Google Patents

Abstract

To provide a rotary crushing and mixing cooker capable of relatively easily improving discharge efficiency of motor heat even when costs and design around a motor are limited.SOLUTION: A rotary crushing and mixing cooker 100 according to the present invention comprises: a body 110 including a frame 111, an electric motor 115 housed in the frame, and rotary shafts 116A, 151e extending upward from the electric motor; and a container 150 that includes bottom wall parts 151b, 151i and a rotary blade 151d disposed above the bottom wall parts and connected to the rotary shafts and is mounted on the body. On a top wall part 111b of the frame is formed an opening Ou1 communicating with a peripheral space of the electric motor. On at least one of a container mounting portion 111m of the body and a portion 151a to be mounted of the container is provided a gap formation portion Pr for forming a gap between the mounting portion of the body and the portion to be mounted of the container. The gap communicates with the opening.SELECTED DRAWING: Figure 5

Description

The present invention relates to a rotary crushing and mixing cooker such as a mixer or a food processor.

In the past, "a motor built in the main body, a leg made of an elastic body provided on the bottom surface of the main body, an intake port and an exhaust port provided on the bottom surface of the main body, and between the exhaust port and the motor An electric cooker having a fixed cooling guide (see, for example, Japanese Patent Laid-Open No. 10-179425) has been proposed.

JP, 10-179425, A

By the way, heat is generated from the motor, and the heat heats the air around the motor. Then, the warmed air tries to rise. For this reason, in order to improve the efficiency of discharging the heat of the motor in the electric cooker as described above, it is necessary to employ a fan having a relatively high blowing capacity or to make the exhaust passage relatively simple. is there. However, in the electric cooker as described above, if the cost and the design around the motor are limited, it is relatively difficult to improve the efficiency of discharging the heat of the motor.

An object of the present invention is to provide an electric cooker (rotary crushing and mixing cooker) that can relatively easily improve the efficiency of discharging heat of the motor even if there is a limitation on the cost or the design around the motor. Is to provide.

The rotary crushing and mixing cooker according to the present invention,
A main body having a housing, an electric motor housed in the housing, and a rotating shaft extending upward from the electric motor;
A bottom wall portion and a container placed on the bottom wall portion and having a rotary blade connected to the rotary shaft, the container being mounted on the main body;
An opening communicating with the peripheral space of the electric motor is formed in the top wall portion of the housing,
At least one of the mounting portion of the container and the mounting portion of the container in the main body, a gap forming portion is provided to form a gap between the mounting portion of the main body and the mounting portion of the container,
The gap communicates with the opening.

According to the above configuration, the space around the electric motor communicates with the gap through the opening. Therefore, the air warmed by the heat generated from the electric motor can be easily discharged from the upper side. Therefore, according to the present invention, the efficiency of discharging heat generated from the electric motor can be relatively easily improved even if the cost and the design around the electric motor (motor) are limited.

In the present invention,
On the side wall of the container, a concave portion that is recessed inward is formed,
It is preferable that the recess communicates with the opening.

According to the above configuration, the peripheral space of the electric motor communicates with the recess through the opening. Therefore, in the present invention, the efficiency of discharging heat generated from the electric motor can be further improved.

In the present invention,
It is preferable that the recess is formed so as to extend obliquely upward.

According to the above configuration, the efficiency of discharging heat generated from the electric motor can be further improved. Moreover, according to the said structure, a recessed part becomes a convex part which goes inside a container, and functions as a rib which assists stirring of a cooking target. Therefore, in the present invention, the stirring efficiency of the cooking target can be improved.

In the present invention,
A first electric motor housing body that partially covers the electric motor, a second electric motor housing body that partially covers the first electric motor housing body, and a cutout portion are provided in the housing. An annular contact member that partially adheres to the outer peripheral surface of the side wall portion and the inner peripheral surface of the side wall portion of the second electric motor housing is housed,
A communication passage is formed from the internal space of the first electric motor housing to the gap through a narrow space formed between the first electric motor housing and the second electric motor housing. It is suitable.

According to the above configuration, even when the air heated by the heat generated by the electric motor moves to the narrow space, the air is discharged from the gap through the cutout portion of the contact member and the communication passage. Therefore, even when the first electric motor housing and the second electric motor housing are arranged in the housing as in the present invention, the heat generated from the electric motor can be efficiently discharged to the outside.

In the present invention,
It is preferable that the lower side of the narrow space is open.

According to the above configuration, when the air heated by the heat generated by the electric motor moves to the narrow space, the air can be discharged from the lower side. Therefore, even when the first motor housing and the second motor housing are arranged in the housing as in the present invention, the heat generated from the motor can be more efficiently discharged to the outside.

In the present invention,
The casing includes a bottom wall portion with an air supply/exhaust port, in which an air supply port and an exhaust port arranged outside the air supply port are formed, and “from the air supply port to the first electric motor housing body”. It is preferable to have a supply/exhaust air separation structure that separates "the air flow to the internal space" and "the air flow from the narrow space to the exhaust port".

According to the above configuration, it is possible to prevent the air supply to the electric motor from being mixed with the exhaust gas in the housing. Therefore, in the present invention, the electric motor can be cooled efficiently.

It is a front view of the mixer which concerns on embodiment of this invention. It is a top view of the mixer which concerns on embodiment of this invention. FIG. 3 is a sectional view taken along line AA of FIG. 2. It is a BB sectional view of FIG. It is an upper perspective view of the main body which constitutes the mixer concerning an embodiment of the invention. FIG. 4 is an enlarged view of the vicinity of the driving side coupling of FIG. 3. It is a top view of the state where the drive side coupling was removed from the main body which constitutes the mixer concerning the embodiment of the invention. It is an enlarged view near the bottom member of FIG. It is an enlarged view near the bottom wall member of FIG. It is a bottom view of the mixer which concerns on embodiment of this invention. It is a top view of the state which removed the drive side coupling, the main body member, the decoration member, and the transparent cover from the main body which comprises the mixer which concerns on embodiment of this invention. It is a perspective view of a state where a drive side coupling, a main body member, a decorative member, and a transparent cover are removed from a main body which constitutes the mixer according to the embodiment of the present invention. It is an upper perspective view of the state which removed the centering plunger from the main part which constitutes the mixer concerning the embodiment of the present invention. FIG. 3 is a simplified cross-sectional view of the vicinity of an alignment plunger that constitutes the mixer according to the embodiment of the present invention. It is a lower perspective view of a cup which constitutes a mixer concerning an embodiment of the invention. It is an enlarged view near the bottom wall member with a cutter of FIG.

As shown in FIGS. 1 and 2, the mixer 100 according to the embodiment of the present invention mainly includes a main body 110, a cup 150, and a lid 160. The main body 110, the cup 150, and the lid 160 are independent assembly parts, and the mixer 100 is completed by assembling these assembly parts.

Hereinafter, the assembly method of the mixer 100 and the operation of the mixer 100 will be described after each of these assembly parts is described in detail. It should be noted that in the following description, the surface on the side where the operation knob (described later) 120 is arranged is defined as the front surface.

<Mixer assembly parts>
(1) Main Body As shown in FIGS. 3 and 4, the main body 110 mainly includes a housing 111, an electric motor cover 112, an inner case 113, a first annular seal member 114, an electric motor 115, an upper drive shaft 116A, and a lower drive shaft. Side drive shaft 116B, drive side coupling 117, cooling fan 118, centering plunger 119, operation knob 120, circuit board (not shown), circuit protection device 121, main body side safety mechanism 122 and electric plug cord 123 Has been done. Hereinafter, these components will be described in detail.

(1-1) Casing As shown in FIGS. 1 to 6, the casing 111 mainly includes a main body member 111A, a bottom wall member 111B, legs 111C, a decorative member 111D, a transparent cover 111E, and an air supply passage formation. It is composed of a plate 111F. Hereinafter, these members will be described in detail.

As shown in FIGS. 3 to 6, the main body member 111A mainly includes a first side wall portion 111a, a first top wall portion 111b, a cylindrical pedestal portion 111c, and a main body side safety mechanism accommodation portion 111l. The first side wall portion 111a is a resin molded body, and has a substantially truncated quadrangular pyramid shape as shown in FIGS. 1, 2, and 5. The first ceiling wall portion 111b is an annular wall portion as shown in FIGS. 3 to 6, and covers the upper central portion of the first side wall portion 111a. As shown in FIGS. 6, 7, and 13, an opening (hereinafter, this opening is referred to as a “first ceiling wall opening”) Ou1 is formed in the center of the first ceiling wall portion 111b. .. Note that, as shown in FIG. 7, the first ceiling wall opening Ou1 has a shape in which each of a right diagonal front portion, a right diagonal rear portion, and a left portion of the circle is extended outward in the radial direction. Presents. Then, inside the first ceiling wall opening Ou1, as shown in FIGS. 6 and 7, the third opening portion 113B of the inner case 113, the bearing portion 117A of the drive side coupling 117, and the upper drive shaft. 116A is present. As is clear from FIG. 6, the upper drive shaft 116A exists in the central portion of the first ceiling wall opening Ou1 and the bearing portion 117A of the drive side coupling 117 exists immediately outside the upper drive shaft 116A. (The upper drive shaft 116A is inserted and fastened inside the bearing 117A.), outside the bearing 117A of the drive-side coupling 117 and away from the bearing 117A of the drive-side coupling 117. The third opening portion 113B of the inner case 113 is present at the position. As shown in FIGS. 5 and 6, the cylindrical pedestal portion 111c is a substantially cylindrical double-walled portion formed of a conical cylindrical wall portion Wa, an annular upper end wall portion Wb, and a cylindrical wall portion Wc, and is a main body. It is formed on the outer peripheral portion on the upper side of the member 111A. That is, the cylindrical pedestal portion 111c is formed so as to be located above the first side wall portion 111a and the first ceiling wall portion 111b. Therefore, a substantially cylindrical space (hereinafter referred to as “cylindrical internal space”) Sc exists inside the cylindrical pedestal portion 111c (see FIG. 5). As shown in FIGS. 5 to 7 and 13, the cylindrical wall portion Wc is formed with three prismatic recess portions Rr, three partial cylindrical recess portions Rc, and six aligning plunger accommodating portions Rp. As shown in FIGS. 5 and 7, the three prismatic recesses Rr and the three partial cylindrical recesses Rc are arranged alternately and at equal intervals, and sandwich the rotation center of the drive side coupling 117 in plan view. Facing each other. Further, one of the partial cylindrical recesses Rc is formed in the vicinity of the main body side safety mechanism accommodating portion 111l. The six aligning plunger accommodating portions Rp are substantially rectangular parallelepiped portions for accommodating the aligning plungers 119, and are formed between the prismatic concave portion Rr and the partial cylindrical concave portion Rc as shown in FIG. Has been done. Further, as shown in FIG. 13, a rail portion RL extending along the radial direction of the cylindrical wall portion Wc is provided in the lower portion of the alignment plunger accommodating portion Rp. The aligning plunger 119 is arranged so as to be retractable along the rail portion RL. The main body side safety mechanism housing portion 111l is a substantially inverted triangular pyramid-shaped wall portion formed above the right side wall Wd of the first side wall portion 111a as shown in FIGS. 5 and 6, and is shown in FIG. As described above, the main body side safety mechanism 122 is housed therein.

The bottom wall member 111B is a member attached to the lower side of the main body member 111A, and as shown in FIGS. 8 to 10, mainly includes the bottom wall main body portion 111d, the air supply path forming wall portion 111e, and the air supply portion. It is formed from a mouth forming portion 111f, a cylindrical wall portion 111g, an exhaust guide rib 111h, an air supply/exhaust division wall portion 111i, a first drainage portion 111j and a second drainage portion 111k. The bottom wall body portion 111d is a basic bowl-shaped portion. The air supply port forming portion 111f is a portion located substantially in the center of the bottom wall body portion 111d in bottom view. The air supply port forming portion 111f is literally formed with the air supply port Ms. The air supply path forming wall portion 111e is a wall portion having a U shape or a horseshoe shape in a bottom view as shown in FIG. 10, and the open end side is the left side in a bottom view, that is, a state in which the cup 150 is attached to the main body 110. Is formed so as to face the spout side of the cup 150 and the curved side faces the right side, that is, the arrangement side of the handle 152 of the cup 150 in the state where the cup 150 is attached to the main body 110. The cylindrical wall portion 111g is a wall portion that literally has a cylindrical shape, and extends upward from the outer peripheral edge portion of the air supply port forming portion 111f as shown in FIG. As shown in FIGS. 8 and 10, the exhaust guide ribs 111h are a plurality of protrusions formed on the outer peripheral portion of the bottom wall main body portion 111d on the curved side of the air supply path forming wall portion 111e in bottom view. Further, it plays a role of guiding the exhaust gas discharged from the exhaust port Me formed on the outer peripheral side to the outside. As shown in FIG. 10, the air supply/exhaust division wall portion 111i extends from the outer surface on the front side of the air supply passage forming wall portion 111e toward the side where the operation knob 120 is disposed, and at the same time, the air supply passage forming wall portion 111e is provided. The exhaust extends from the outer surface on the back side toward the side opposite to the side on which the operation knob 120 is disposed, and the exhaust discharged from the exhaust port Me is prevented from being taken into the inside of the main body 110 again from the supply port Ms. It is responsible for shutting off. The first drainage portion 111j and the second drainage portion 111k are portions that are responsible for discharging the liquid material to the outside of the main body 110 when the liquid material enters the main body 110, as shown in FIG. The bottom wall body 111d is formed at the center on the left side and the center on the back side.

The legs 111C extend downward from the four corners of the bottom wall body 111d, as shown in FIGS. 8 to 10.

The decorating member 111D is a decorating plate, decorating foil, decorating film, or the like having a truncated conical tubular shape, and as shown in FIG. 6, a conical tubular wall portion Wa of the cylindrical pedestal portion 111c of the main body member 111A. It is arranged between the transparent cover 111E.

The transparent cover 111E is a member that visually protects the decorative member 111D, and as shown in FIGS. 3 and 4, covers the upper and outer sides of the cylindrical pedestal 111c of the main body member 111A so as to sandwich the decorative member 111D. ing. As shown in FIGS. 5 to 7, the transparent cover 111E is mainly formed of an annular upper end wall portion 111m and a substantially frustoconical outer wall portion 111n. Then, as shown in FIG. 5, protrusions Pr are formed on the upper end surface of the upper end wall portion 111m at equal intervals along the circumferential direction. Further, as shown in FIGS. 5 and 7, the inner peripheral side of the upper end wall portion 111m is notched at positions corresponding to the prismatic recess Rr and the partial cylindrical recess Rc of the main body member 111A.

The air supply passage forming plate 111F is a plate material that covers the lower side of the air supply passage forming wall portion 111e formed in the bottom wall member 111B, and is joined to the lower end of the air supply passage forming wall portion 111e. As a result, the air supply passage forming plate 111F and the air supply passage forming wall portion 111e form an air supply passage Ps extending from the left side toward the center side (FIGS. 3, 4, 8, and 9). reference). The size of the air intake port of the air supply passage Ps is set so that no human finger can enter it.

(1-2) Electric Motor Cover As shown in FIGS. 3 and 4, the electric motor cover 112 is a cylindrical body having a bottom and no lid, and mainly includes the second ceiling wall portion 112A, the second opening portion 112B, and the second opening portion 112B. It is composed of two side wall portions 112C, a seal member holding portion 112D, and a flange portion 112E. An electric motor 115 is housed inside the electric motor cover 112. The second ceiling wall portion 112A is a substantially disk-shaped wall portion. Then, as shown in FIG. 6, a circular opening (hereinafter, this opening is referred to as a “second ceiling wall opening”) Ou2 is formed in the central portion of the second ceiling wall portion 112A. The second opening portion 112B is a wall portion having a cylindrical shape, and extends upward from the edge portion of the second ceiling wall opening Ou2 of the second ceiling wall portion 112A as shown in FIG. As shown in FIG. 6, the upper drive shaft 116A is inserted into the inner space of the second ceiling wall opening Ou2 and the second opening 112B. The second side wall portion 112C is a wall portion having a substantially cylindrical shape, and extends downward from the outer edge portion of the second top wall portion 112A as shown in FIGS. 3, 4, and 6. Further, as shown in FIG. 3, an opening (hereinafter, this opening is referred to as a “second side wall opening”) Os2 is formed in the second side wall portion 112C. The second side wall opening Os2 plays a role of discharging heat generated from the electric motor 115 to the outside. As shown in FIG. 3, the seal member holding portion 112D is a pair of upper and lower annular portions and is formed on the upper portion of the second side wall portion 112C. Then, the first annular seal member 114 is fitted into the annular groove formed by the seal member holding portion 112D. The flange portion 112E is an annular portion and extends outward along the horizontal plane from the lower end of the second side wall portion 112C as shown in FIGS. 3, 4, 8 and 9. As shown in FIGS. 8 and 9, the cooling fan 118 is attached to the lower side of the flange portion 112E via the attachment blade portion 118C of the cooling fan 118.

(1-3) Inner Case As shown in FIGS. 3, 4, and 12, the inner case 113 is a cylindrical body having a bottom and no lid, and mainly includes a third ceiling wall portion 113A and a third mouth portion. 113B, a partial enclosing wall portion 113C, a third side wall portion 113D, a groove forming wall portion 113E, a vertical rib 113F, and a circuit protection device holding portion 113G. An electric motor 115 and an electric motor cover 112 are housed inside the inner case 113. The third ceiling wall portion 113A is a substantially disk-shaped wall portion. Then, as shown in FIG. 6, a circular opening (hereinafter, this opening is referred to as a “third ceiling wall opening”) Ou3 is formed in the central portion of the third ceiling wall portion 113A. The third opening portion 113B is a wall portion having a cylindrical shape, and extends upward from the edge portion of the third ceiling wall opening Ou3 of the third ceiling wall portion 113A as shown in FIG. In addition, as shown in FIG. 6, the bearing portion 117A of the drive side coupling 117 and the upper drive shaft 116A are present in the internal space of the third ceiling wall opening Ou3 and the third mouth portion 113B. As is clear from FIG. 6, the upper drive shaft 116A is present in the central portion of the third ceiling wall opening Ou3 and the third opening 113B, and the drive side coupling 117 is provided immediately outside the upper drive shaft 116A. A bearing portion 117A is present (the upper drive shaft 116A is inserted and fastened inside the bearing portion 117A). The third opening 113B is located inside the first ceiling wall opening Ou1 of the first ceiling wall 111b as shown in FIGS. 6 and 7. The partial enclosing wall portion 113C is formed so as to partially enclose the third opening portion 113b as shown in FIG. As shown in FIG. 6, the upper end surface of the partial enclosing wall portion 113C is designed to be lower than the upper end surface of the third opening portion 113B. Further, as shown in FIG. 6, a groove is formed in the upper end surface of the partial enclosing wall portion 113C, and the linear seal member SL1 is fitted in the groove. The linear seal member SL1 is a linear elastic member made of rubber or elastomer and is in close contact with the lower surface of the first ceiling wall portion 111b. The space between the partial enclosing wall portion 113C and the third mouth portion 113b is a liquid substance falling through the first ceiling wall opening Ou1 (for example, water at the time of washing with water or a liquid cooked food in the cup 150). When it leaks, it acts as a storage space for receiving the leaked material). The third side wall portion 113D is a wall portion having a substantially cylindrical shape, and extends downward from the outer edge portion of the third top wall portion 113A as shown in FIGS. 3, 4, and 6. As shown in FIGS. 3 and 12, the third side wall portion 113D has two openings (hereinafter, these openings are referred to as “thirty-first side wall openings” and “thirty-second side wall openings”) Os31,. Os32 is formed. The thirty-first side wall opening Os31 and the thirty-second side wall opening Os32 have a role of discharging heat generated from the electric motor 115 to the outside. The groove-forming wall portion 113E is a pair of parallel flat plate-shaped wall portions that face each other as shown in FIG. 12, and as shown in FIGS. It is formed so as to extend downward along the outer surface of the third side wall portion 113D. That is, the liquid substance flowing into the space between the partial surrounding wall portion 113C and the third mouth portion 113b flows downward through the groove of the groove forming wall portion 113E. As shown in FIG. 12, the vertical rib 113F extends outward from the portion of the third side wall portion 113D located between the thirty-first side wall opening Os31 and the thirty-second side wall opening Os32. The exhaust gas exhaust path flowing out from Os31 and the exhaust gas exhaust path flowing out from the 32nd side wall opening Os32 are partially separated. The circuit protection device holder 113G is a part that holds the circuit protection device 121, and is arranged so as to cover a part of the thirty-first side wall opening Os31.

(1-4) First Annular Seal Member The first annular seal member 114 is a substantially annular elastic member made of rubber or elastomer. Then, notches (not shown) are formed at equal intervals on the outer peripheral portion of the first annular seal member 114. The first annular seal member 114 is fitted in the annular groove of the seal member holding portion 112D of the electric motor cover 112 as shown in FIGS. 3 and 4, and is attached to the inner peripheral surface of the upper portion of the inner case 113. Partially abutted. That is, the space formed between the outer peripheral surface of the electric motor cover 112 and the inner peripheral surface of the inner case 113 is divided into an upper space and a lower space by the first annular seal member 114, but the upper space and the lower space. Will communicate with each other through the notch of the first annular seal member 114.

(1-5) Electric Motor As shown in FIGS. 3 and 4, the electric motor 115 is an inner rotor type double shaft electric motor, and is housed in the electric motor cover 112 as described above, and is a casing of the main body 110. It is arranged near the center of 111. The electric motor 115 is connected to the variable resistor VR as shown in FIG. 4, and the rotation speed of the electric motor 115 is controlled by rotating the knob of the variable resistor VR. As shown in FIG. 4, the operation knob 12 is attached to the knob of the variable resistor VR.

(1-6) Upper drive shaft

As shown in FIGS. 3 and 4, the upper drive shaft 116A extends upward from the upper end of the rotor of the electric motor 115. The upper end of the upper drive shaft 116A is inserted and fastened inside the bearing 117A of the drive side coupling 117.

(1-7) Lower Drive Shaft The lower drive shaft 116B extends downward from the lower end of the rotor of the electric motor 115, as shown in FIGS. 3 and 4. Then, as shown in FIGS. 8 and 9, the lower end portion of the lower drive shaft 116B is joined to the rotation center of the fan 118A of the cooling fan 118.

(1-8) Drive Side Coupling As described above, the drive side coupling 117 is provided with the bearing portion 117A, and the upper end portion of the upper drive shaft 116A is inserted and fastened to the bearing portion 117A. The drive side coupling 117 plays a role of connecting the upper drive shaft 116 on the main body side and the driven shaft 151e on the cup side in a state where the mixer 100 is assembled (see FIGS. 3 and 4).

(1-9) Cooling Fan The cooling fan 118 is an axial fan, and as shown in FIGS. 8 and 9, mainly includes a fan 118A, a fan housing 118B, and a mounting blade 118C. .. The fan 118A is incorporated in the fan housing 118B so as to be rotatable. The lower drive shaft 116B is joined to the rotation center of the fan 118A. That is, when the electric motor 115 is driven, its rotational power is transmitted to the fan 118A via the lower drive shaft 116B, and as a result, the fan 118A is rotated. As described above, the fan housing 118B rotatably supports the fan 118A. The attachment blade portion 118C is a portion for attaching the cooling fan 118 to the flange portion 112E of the electric motor cover 112, and extends outward from the fan housing 118B as shown in FIGS. 8 and 9. Then, as described above, the cooling fan 118 is attached to the lower side of the flange portion 112E of the electric motor cover 112 via the attachment blade portion 118C. Further, as shown in FIGS. 8 and 9, the bottom surface of the fan housing 118B is in close contact with the cylindrical wall portion 111g of the bottom wall member 111B via the second annular seal member SL2. The second annular seal member SL2 is a substantially annular elastic member made of rubber or elastomer. That is, when the fan 118A rotates, external air passes through the air supply passage Ps, the air supply port Ms, and the inside of the cylindrical wall portion 111g, is sucked into the fan 118A, and is supplied to the electric motor 115. Then, the air supplied to the electric motor 115 removes heat generated from the electric motor 115 to cool the electric motor 115 and is heated.

(1-10) Centering Plunger There are six centering plungers 119, and each centering plunger 119 accommodates the centering plunger of the cylindrical wall portion Wc as shown in FIGS. 5 and 13. It is arranged in the section Rp. As described above, the aligning plunger 119 is housed so as to be retractable along the rail portion RL (see FIG. 13) extending along the radial direction of the cylindrical wall portion Wc. As shown in FIG. 14, the centering plunger 119 mainly includes a plunger body 119A and a coil spring 119B. As shown in FIG. 14, the plunger body 119A is formed of a square plate portion 119a, a partial spherical protrusion 119b, and a coil spring attachment protrusion 119c. The partial spherical protrusion 119b is formed on the front side of the square plate 119a as shown in FIG. The partial spherical projection 119b is formed slightly larger than the groove width of a square groove (described later) Gr formed in a lower cylindrical wall portion (described later) 151c of the cup 150 described later. That is, when the cup 150 is mounted on the main body 110, the partial spherical projection 119b does not completely fit into the square groove Gr, but only a part thereof comes into contact with the corner portion of the square groove Gr. As shown in FIG. 14, the coil spring attachment protrusion 119c extends rearward from the back side of the square plate 119a. The coil spring 119B is fitted on the outside of the coil spring mounting protrusion 119c of the plunger body 119A, and biases the plunger body 119A toward the cylinder axis of the cylindrical wall portion Wc.

(1-11) Operation knob

As shown in FIGS. 1 and 2, one operation knob 120 is provided on the first side wall portion 111a on the front side of the housing 111 of the main body 110. As described above, the knob of the variable resistor VR is attached to the operation knob 120. That is, when the user rotates the operation knob 120, the resistance value of the variable resistor VR changes, and as a result, the rotation speed of the electric motor 115 changes.

(1-12) Circuit Board The circuit board is housed inside the housing 111, and is connected to the electric motor 115, the variable resistor VR, the circuit protection device 121, the main body side safety mechanism 122, etc. via a control line or the like. It is also connected to the electric plug cord 123.

(1-13) Circuit Protection Device The circuit protection device 121 is a so-called circuit protector and is automatically operated when an overcurrent occurs in an electric wiring connected to the electric motor 115 or when an overload occurs due to a short circuit of the electric wiring. It is a device that shuts off overcurrent, and is held by the circuit protection device holding portion 113G of the inner case 113.

(1-14) Main Body Side Safety Mechanism As shown in FIG. 3, the main body side safety mechanism 122 mainly includes a main body side vertical movement bar 122A, a coil spring (not shown), and a micro switch 122B. The main body side vertical movement bar 122A is housed in the main body side safety mechanism housing portion 111l of the housing 111 so as to be vertically movable. Further, the main body side vertical movement bar 122A is biased upward by a coil spring. The micro switch 122B is arranged below the main body side vertical movement bar 122A. Then, in the state where the main body side vertical movement bar 122A is pushed upward by the biasing force of the coil spring, the micro switch 122B is in the off state. Therefore, in this state, even if the operation knob 120 is operated, the mixer 100 does not operate at all. On the other hand, when the main body side vertical movement bar 122A is pushed downward against the biasing force of the coil spring, the micro switch 122B is turned on. Then, when the micro switch 122B is turned on, the mixer 100 can be operated by rotating the operation knob 120.

(1-15) Electric Plug Cord As shown in FIG. 10, the electric plug cord 123 is mainly composed of an electric cord 123A and a plug 123B. The electric cord 123A has one end connected to the circuit board and the other end connected to the plug 123B. The plug 123B can be inserted into and removed from the socket of the external power source.

(2) Cup As shown in FIGS. 1 to 4 and 15, the cup 150 is mainly composed of a cup body 151, a handle 152 and a cup side safety mechanism 153. Hereinafter, these components will be described in detail.

(2-1) Cup Main Body As shown in FIGS. 3 and 4, the cup main body 151 mainly includes a side wall member 151A, a bottom wall member 151B with a cutter, a third annular seal member SL3, and a cup-side safety mechanism accommodating portion. 151C. Hereinafter, these components will be described in detail.

(2-1-1) Side Wall Member The side wall member 151A is a cylindrical molded body made of glass or resin, and is mainly formed of a main body 151a, a bottom corner 151b, and a lower cylindrical wall 151c. There is. As shown in FIG. 3, the side wall member 151A has no bottom wall. The side wall member 151A functions as a container only when the bottom wall member 151B with a cutter is attached to the lower cylindrical wall portion 151c.

By the way, the main body 151a has a substantially inverted truncated cone shape, as shown in FIGS. 1, 3, and 15. The lower end surface of the main body 151a is a flat annular surface. As shown in FIGS. 1, 3, and 15, the body portion 151a is provided with a spout Mp, and the cup-side safety mechanism accommodating portion 151C is integrally formed on the opposite side of the spout Mp. Is attached to. The body portion 151a and the bottom corner portion 151b are provided with a recess RE that functions as a stirring rib and an exhaust passage (see FIGS. 1, 3, and 15). By the way, this recess RE is formed so as to extend obliquely upward as shown in FIGS. 1, 3, and 15. The depth of the recess RE is designed so as to communicate with the cylindrical internal space Sc in the cylindrical pedestal 111c of the housing 111 when the cup 150 is mounted on the main body 110. The bottom corner portion 151b is a portion having a substantially annular shape, and extends downward from the vicinity of the lower end of the main body portion 151a toward the inside as shown in FIG. The lower cylindrical wall portion 151c is a substantially cylindrical wall portion extending downward from the vicinity of the inner end of the bottom corner portion 151b, and a female screw is formed inside thereof. Further, as shown in FIG. 15, a fitting rib Ry is provided on the outer periphery of the lower cylindrical wall portion 151c, and a square groove Gr is formed on the outer peripheral surface of the lower cylindrical wall portion 151c. There is. As shown in FIG. 15, three fitting ribs Ry are formed on the outer peripheral surface of the lower cylindrical wall portion 151c at equal intervals, and when the cup 150 is mounted on the main body 110, a main body member of the housing 111. Fit into the three prismatic recesses Rr of 111A. As shown in FIG. 15, the square groove Gr is formed along the circumferential direction in the lower portion between the fitting ribs Ry of the lower cylindrical wall portion 151c.

(2-1-2) Bottom Wall Member with Cutter As shown in FIGS. 15 and 16, the bottom wall member with cutter 151B mainly includes a rotary blade 151d, a driven shaft 151e, a driven side coupling 151f, and a bearing 151g. The bearing housing wall 151h, the blade portion 151i, the cylindrical portion 151j, the annular portion 151k, the male screw portion 151l and the lower end portion 151m.

The rotary blade 151d is a metal blade and has a function of crushing and mixing an object to be cooked. Then, as shown in FIG. 16, a driven shaft 151e is fastened to the center of rotation of the rotary blade 151d. As described above, the driven shaft 151e is fastened to the rotation center of the rotary blade 151d, and is supported by the bearing 151g so as to extend in the vertical direction, as shown in FIG. The driven-side coupling 151f is attached to the lower end of the driven shaft 151e as shown in FIG. 16, and is engaged with and coupled to the drive-side coupling 117 when the cup 150 is mounted on the main body 110 ( See FIG. 3 and FIG. 16 etc.). Therefore, when the electric motor 115 is driven with the cup 150 attached to the main body 110, the rotational power thereof is transmitted to the driven shaft 151e via the upper drive shaft 116A, the drive side coupling 117, and the driven side coupling 151f. To be done. Then, as a result, the rotary blade 151d is rotated. The bearing 151g is not particularly limited, but is, for example, a sliding bearing, a rolling bearing, or the like, and is arranged one above the other in the bearing housing wall as shown in FIG. A driven shaft 151e is rotatably held by the bearing 151g. The bearing housing wall 151h houses two upper and lower bearings 151g as shown in FIG. As shown in FIG. 16, the wing portion 151i expands from the central portion in the height direction of the bearing housing wall 151h toward the outer peripheral side. The wing portion 151i has a truncated cone shape. That is, in a cross-sectional view, the wing portion 151i is inclined downward from the bearing housing wall 151h toward the outer peripheral side (see FIG. 16). The cylindrical portion 151j is a portion having a cylindrical shape, and extends downward from the outer peripheral end of the blade portion 151i as shown in FIG. The annular portion 151k is a portion having an annular shape, and extends substantially horizontally from the lower end of the cylindrical portion 151j toward the outer peripheral side as shown in FIG. As shown in FIG. 16, the male screw portion 151l extends downward from the outer peripheral end of the annular portion 151k. A male screw is formed on the outside of the male screw portion 151l. The lower end portion 151m is a member having a cylindrical shape, and extends slightly downward from the lower end of the male screw portion 151l toward the outer peripheral side and then extends downward.

(2-1-3) Third Annular Seal Member The third annular seal member SL3 is a substantially annular elastic member made of rubber or elastomer, and as shown in FIG. 6, the bottom corner portion 151b of the side wall member 151A. Of the bottom wall member 151B with a cutter is in close contact with the inner end of the.

(2-1-4) Cup-side safety mechanism accommodating portion The cup-side safety mechanism accommodating portion 151C is formed on the opposite side of the spout Mp of the main body portion 151a of the side wall member 151A as shown in FIGS. 1 and 3. And is integrated with the main body 151a of the side wall member 151A. The cup-side safety mechanism accommodation portion 151C accommodates the cup-side safety mechanism 153 as shown in FIG. Further, as shown in FIGS. 1 and 3, a handle 152 is integrally attached to the upper end of the cup-side safety mechanism housing 151C.

(2-2) Handle As described above, the handle 152 is attached to the upper end of the cup-side safety mechanism housing 151C (see FIGS. 1 to 3).

(2-3) Cup-side safety mechanism The cup-side safety mechanism 153 is housed in the cup-side safety mechanism housing portion 151C as described above (see, for example, FIG. 3). As shown in FIG. 3, the cup-side safety mechanism 153 mainly includes a cup-side vertical movement bar 153A, a coil spring 153B, and a pusher 153C. The cup-side vertical movement bar 153A is accommodated inside the cup-side safety mechanism accommodation portion 151C so as to be vertically movable. A pusher 153C is attached to the upper end of the cup-side vertical movement bar 153A. The coil spring 153B biases the pusher 153C upward. That is, the cup-side vertical movement bar 153A is also urged upward by the coil spring 153B similarly to the pusher 153C. As described above, the pusher 153C is attached to the upper end of the cup-side vertical movement bar 153A. When the lid 160 is attached to the cup 150, the pushing tool 153C is pushed down by the protrusion 164 of the lid 160. When the lid 160 is not attached to the cup 150, the cup-side vertical movement bar 153A is pushed upward by the biasing force of the coil spring 153B, and the body-side vertical movement bar 122A is not pushed downward. Therefore, in this state, the micro switch 122B of the main body side safety mechanism 122 is in the off state. Therefore, in this state, even if the operation knob 120 is operated, the mixer 100 does not operate at all. On the other hand, when the lid 160 is attached to the cup 150, the pusher 153C of the cup-side safety mechanism 153 is pushed down by the protrusion 164 of the lid 160, and as a result, the cup-side vertical movement bar 153A of the coil spring 153B. It is pushed downward by the urging force. When the cup-side vertical movement bar 153A is pushed downward against the biasing force of the coil spring 153B, the cup-side vertical movement bar 153A contacts the main-body vertical movement bar 122A and the main-body vertical movement bar 122A is attached with the coil spring. Push down against the forces. As a result, the micro switch is turned on. Then, when the micro switch is turned on, the mixer 100 becomes operable by rotating the operation knob 120.

(3) Lid The lid 160 is mainly composed of a lid body 161, a cylindrical wall 162, an air supply/exhaust port 163, and a protrusion 164, as shown in FIG. As shown in FIGS. 1 to 4 and 15, the lid body 161 is formed of a disc portion 161A, a spout closing portion 161B and an extension portion 161C. The disc portion 161A is a plate-shaped portion having a substantially disc shape. The spout closing portion 161B is a portion slightly projecting from the disc portion 161A in a plan view as shown in FIG. 2, and in the state where the lid 160 is mounted on the cup 150, the spout closing portion 161B of the main body portion 151a of the side wall member 151A is formed. Cover the spout Mp. The extended portion 161C extends from the disc portion 161A in the opposite direction to the extending direction of the spout closed portion 161B on the opposite side of the spout closed portion 161B. As shown in FIG. 3, the cylindrical wall portion 162 extends downward from the lower surface near the outer periphery of the disc portion 161A of the lid body 161. Then, a fourth annular seal member SL4 is arranged on the outer periphery of the cylindrical wall portion 162, as shown in FIGS. 3 and 4. The air supply/exhaust port portion 163 is formed in the central portion of the lid main body portion 161, as shown in FIGS. 3 and 4, and has a substantially cylindrical shape. Then, as shown in FIGS. 3 and 4, a through hole Bo is formed in the air supply/exhaust port portion 163. The through hole Bo functions as an air supply port or an air exhaust port when the lid 160 is opened and closed. As shown in FIG. 3, the protrusion 164 extends downward from the lower surface of the extension portion 161C. When the lid 160 is attached to the cup 150, the protrusion 164 contacts the cup-side vertical movement bar 153A of the cup-side safety mechanism 153 and pushes down the cup-side vertical movement bar 153A.

<Example of mixer assembly>
First, after disposing the third annular seal member SL3 on the annular portion 151k of the bottom wall member with cutter 151B, the bottom wall member 151B with cutter is screwed into the side wall member 151A to form the cup 150.

Next, the lower cylindrical wall portion 151c and the lower end portion 151m of the cup 150 assembled as described above are inserted inside the cylindrical pedestal portion 111c, and the cup 150 is placed on the main body 110. Then, at this time, the fitting rib Ry fits into the three prismatic recesses Rr of the main body member 111A of the housing 111, and the partial spherical projection 119b of the centering plunger 119 causes the lower cylindrical wall portion 151c of the cup 150. Fit into the square groove Gr. Further, when the partial spherical protrusion 119b of the centering plunger 119 is fitted into the square groove Gr of the lower cylindrical wall portion 151c of the cup 150, a click sound is heard.

<Mixer operation>
First, after the food and drink are put into the cup 150 of the mixer 100 without the lid assembled as described above, the lid 160 is attached to the cup 150. Then, the protrusion 164 of the lid 160 pushes down the cup-side vertical movement bar 153A of the cup-side safety mechanism 153 against the biasing force of the coil spring 153B. As a result, the cup side vertical movement bar 153A of the main body side safety mechanism 122 of the main body 110 is pushed down against the biasing force of the coil spring, and the micro switch is turned on. When the operation knob 120 is rotated in this state, the electric motor 115 causes the rotary blade 151d to rotate at a speed according to the rotation angle of the operation knob 120 to cut and shear the food and drink material in the cup 150 and mix them. .. At this time, the axis of the drive side coupling 117 and the axis of the driven side coupling 151f are aligned by the centering plunger 119.

<Exhaust heat treatment of electric motor>
As described above, when the electric motor 115 starts to operate by the rotating operation of the operation knob by the user, the rotary blade 151d starts to rotate and the fan 118A starts to rotate. Then, when the fan 118A rotates, the outside air is sucked into the fan 118A through the air supply passage Ps, the air supply port Ms, and the inside of the cylindrical wall portion 111g, and is supplied to the electric motor 115. The air supplied to the electric motor 115 removes heat generated from the electric motor 115 to cool the electric motor 115 and heat itself. Then, a part of the heated air (hereinafter referred to as “heated air”) is a1) a gap between the second ceiling wall opening Ou2 of the motor cover 112 and the upper drive shaft 116A, a2) a second space of the motor cover 112. A gap between the mouth 112B and the upper drive shaft 116A, a3) A gap between the third ceiling wall opening Ou3 of the inner case 113 and the upper drive shaft 116A, a4) A third mouth 113B of the inner case 113 and the drive side coupling 117. A5) The transparent cover 111E formed by the protrusion Pr of the transparent cover 111E and the side wall member 151A of the cup 150. It is discharged to the outside from the gap with the lower end surface of the main body 151a and a7) the recess portion RE of the side wall member 151A.

The other part of the heated air is b1) the second side wall opening Os2 of the electric motor cover 112, b2) the notch of the first annular seal member 114, and b3) the electric motor cover 112 above the first annular seal member 114. And the heated air flowing into the gap between the second opening 112B of the electric motor cover 112 and the upper drive shaft 116A through the gap between the above-mentioned portion and the portion of the inner case 113 above the first annular seal member 114. After joining, the transparent cover 111E formed by the protrusion Pr of the transparent cover 111E and the lower end surface of the main body 151a of the side wall member 151A of the cup 150 are passed through the above-mentioned paths a3) to a5). And a7) The side wall member 151A is discharged to the outside from the recess portion RE.

Further, other parts of the heated air are b1) the second side wall opening Os2 of the electric motor cover 112, c1) a portion of the electric motor cover 112 lower than the first annular seal member 114, and the first annular seal member 114. Also, a gap with the lower inner case 113 portion, c2) through the 31st side wall opening Os31 and the 32nd side wall opening Os32 of the third side wall portion 113D of the inner case 113 to the outside from the exhaust port Me of the bottom wall member 111B. Is discharged.

<Flow of liquid when liquid enters the body>
For example, when water during washing with water or a leaked substance when the liquid food in the cup 150 leaks into the cylindrical internal space Sc in the cylindrical pedestal 111c of the housing 111, the water or the leaked water The object (hereinafter referred to as “liquid material”) is transmitted to the drive side coupling 117 after being dropped to the drive side coupling 117, or is dropped to the first ceiling wall portion 111b and directly to the first ceiling wall opening. Invade Ou1. The liquid substance that has entered the first ceiling wall opening Ou1 then falls into the space between the partial surrounding wall portion 113C of the inner case 113 and the third mouth portion 113b, and then passes through the groove of the groove forming wall portion 113E. It flows downward and is discharged from the first drainage portion 111j and the second drainage portion 111k of the bottom wall member 111B of the housing 111.

Further, it is possible that the liquid substance that has entered the first ceiling wall opening Ou1 travels through the bearing portion 117A of the drive side coupling 117 and enters the gap between the third ceiling wall opening Ou3 and the upper drive shaft 116A. In such a case, after the liquid substance has dropped to a portion outside the second ceiling wall opening Ou2 of the second ceiling wall portion 112A of the electric motor cover 112 (this is the diameter of the bearing portion 117A of the drive side coupling 117). Is larger than the diameter of the second ceiling wall opening Ou2 of the second ceiling wall portion 112A.), b3) The portion of the electric motor cover 112 above the first annular seal member 114 and the first annular seal member 114. Also, a gap with a portion of the inner case 113 on the upper side, b2) a notch of the first annular seal member 114, c1) a portion of the electric motor cover 112 below the first annular seal member 114, and the first annular seal member 114. It flows through a gap with a portion of the inner case 113 on the lower side and is discharged from the first drainage portion 111j and the second drainage portion 111k of the bottom wall member 111B of the housing 111.

<Characteristics of the mixer according to the embodiment of the present invention>
(1)
In the mixer 100 according to the embodiment of the present invention, the peripheral space of the electric motor 115 is provided with the “projection Pr of the transparent cover 111E of the main body 110” and the main body of the side wall member 151A of the cup 150 via the first ceiling wall opening Ou1. It communicates with the gap formed between the “lower end surface of the portion 151a”. Further, in this mixer 100, the peripheral space of the electric motor 115 also communicates with the recess RE formed in the side wall member 151A of the cup 150 via the first ceiling wall opening Ou1, and the recess RE faces diagonally upward. Are formed so as to extend. Therefore, in this mixer 100, the air warmed by the heat generated from the electric motor 115 can be discharged from the upper side where the air easily moves. Therefore, in this mixer 100, the efficiency of discharging the heat generated from the electric motor 115 can be relatively easily improved even if the cost and the design around the electric motor are limited.

(2)
In the mixer 100 according to the embodiment of the present invention, the concave portion RE formed on the side wall member 151A of the cup 150 becomes a convex portion directed toward the inside of the side wall member 151A of the cup 150, and serves as a rib that assists stirring of the cooking target. Function. Therefore, the mixer 100 can improve the stirring efficiency of the cooking target.

(3)
In the mixer 100 according to the embodiment of the present invention, part of the heated air is b1) the second side wall opening Os2 of the motor cover 112, b2) the notch of the first annular seal member 114, and b3) the first annular seal member. A2) The second opening 112B of the motor cover 112 and the upper drive shaft 116A through the gap between the part of the motor cover 112 above 114 and the part of the inner case 113 above the first annular seal member 114. After merging with the heated air flowing in the gap between and, a6) the transparent cover 111E formed by the protrusion Pr of the transparent cover 111E and the main body of the side wall member 151A of the cup 150 through the paths a3) to a5). It is discharged to the outside from the gap with the lower end surface of the portion 151a and a7) the recess portion RE of the side wall member 151A. Therefore, in this mixer 100, even if the air warmed by the heat generated by the electric motor 115 moves to the gap between the electric motor cover 112 and the inner case 113, the air is generated by the first annular seal member 114. Through the notch, it is discharged from a gap formed between “the protrusion Pr of the transparent cover 111E of the main body 110” and “the lower end surface of the main body 151a of the side wall member 151A of the cup 150”. Therefore, even when the electric motor cover 112 and the inner case 113 are arranged inside the housing 111, the heat generated from the electric motor 115 can be efficiently discharged to the outside.

(4)
In the mixer 100 according to the embodiment of the present invention, the cylindrical wall portion 111g extends from the outer peripheral edge portion of the air supply port forming portion 111f to the vicinity of the lower surface of the cooling fan 118, and the cooling fan 118 and the cylindrical wall portion 111g have the first cylindrical wall portion 111g. The two annular seal members SL2 are in close contact with each other. Further, in this mixer 100, the exhaust port Me is formed outside the air supply path forming wall portion 111e in a bottom view. Therefore, in the mixer 100, it is possible to prevent the air supplied to the electric motor 115 from being mixed with the exhaust gas inside the housing 111. Therefore, in this mixer 100, the electric motor 115 can be efficiently cooled.

<Modification>
In the mixer 100 according to the previous embodiment, the transparent cover 111E of the main body 110 and the side wall member of the cup 150 are formed by forming the protrusion Pr on the upper end surface of the upper end wall portion 111m of the transparent cover 111E of the main body 110. Although the gap is formed between the main body 151a of the 151A and the main body 151a of the cup 151A, the gap may be formed by forming a protrusion on the lower end surface of the main body 151a of the side wall member 151A of the cup 150. The protrusion may be formed on both the upper end surface of the upper end wall portion 111m of the transparent cover 111E of the main body 110 and the lower end surface of the main body portion 151a of the side wall member 151A of the cup 150 to form the same gap. ..

100: Mixer (rotary crushing mixing cooker)
110: Main body 111: Housing 111b: Top wall part 111d: Bottom wall main part 111f: Air supply port forming part (supply/exhaust separation structure)
111g: Cylindrical wall (supply/exhaust separation structure)
111m: Upper end wall part (placement part)
112: Motor cover (first motor housing)
112C: Second side wall (side wall)
113: Inner case (second electric motor housing)
113D: Third side wall (side wall)
114: First annular seal member (close contact member)
115: Electric motor 116A: Upper drive shaft (rotating shaft)
150: Cup (container)
151a: Main body (placed portion)
151b: bottom corner (bottom wall)
151d: rotary blade 151e: driven shaft (rotating shaft)
151i: Wing (bottom wall)
Me: Exhaust port Ms: Air supply port Ou1: First ceiling wall opening (opening)
Pr: Protrusion (gap forming part)
RE: recess

Claims (6)

A main body having a housing, an electric motor housed in the housing, and a rotating shaft extending upward from the electric motor;
A bottom wall portion and a container placed on the bottom wall portion and having a rotary blade connected to the rotary shaft, the container being mounted on the main body;
An opening communicating with the peripheral space of the electric motor is formed in the top wall portion of the housing,
At least one of the mounting portion of the container and the mounting portion of the container in the main body, a gap forming portion is provided to form a gap between the mounting portion of the main body and the mounting portion of the container,
A rotary crushing and mixing cooker in which the gap communicates with the opening. The side wall portion of the container is formed with a concave portion that is recessed inward,
The rotary crushing and mixing cooker according to claim 1, wherein the recess is in communication with the opening. The rotary crushing and mixing cooker according to claim 2, wherein the recess is formed to extend obliquely upward. The housing includes a first electric motor housing that partially covers the electric motor, a second electric motor housing that partially covers the first electric motor housing, and a cutout portion. An annular contact member that partially adheres to the outer peripheral surface of the side wall portion of the second electric motor housing and the inner peripheral surface of the side wall portion of the second electric motor housing.
A communication passage is formed from the internal space of the first electric motor housing to communicate with the gap through a narrow space formed between the first electric motor housing and the second electric motor housing. The rotary crushing and mixing cooker according to any one of Items 1 to 3. The rotary crushing and mixing cooker according to claim 4, wherein the narrow space is open at the lower side. The casing includes a bottom wall portion with an air supply/exhaust port, in which an air supply port and an exhaust port arranged outside the air supply port are formed, and “from the air supply port to the first electric motor housing body”. The rotary crushing and mixing cooker according to claim 5, further comprising: an air supply/exhaust air separation structure that separates an "air flow to the internal space" and an "air flow from the narrow space to the exhaust port".

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