JP6455823B2 - Mixer unit and hand blender - Google Patents

Description

  The present invention relates to a hand blender, and more particularly, to a mixer unit provided in the hand blender.

  Conventionally, various types of hand blenders of this type are known. For example, as a conventional hand blender, there is known a structure including a bell-shaped hood, a rotation shaft provided inside the hood, and a plurality of cutting blades and a mixing blade rotating around the rotation shaft. (For example, see Patent Document 1: International Publication No. 2012/060470).

  In a conventional hand blender, an object to be cooked in a hood is cut (pulverized) by contacting a rotating cutting blade. A part of the cut object to be cooked moves to the upper space in the hood and comes into contact with the mixing blade or a rotating water flow generated by the rotation of the mixing blade in a radial direction with respect to the rotation axis. Receive. Due to the centrifugal force, a part of the object to be cooked is guided to the inner wall surface of the hood and moves downward along the inner wall surface. After that, a part of the cooked food is further finely cut by coming into contact with the rotating cutting blade again. A part of the cut object to be cooked moves to the upper space in the hood.

  In this way, the object to be cooked is circulated and agitated in the hood, and is further finely cut in the process of being circulated and agitated. Moreover, in the conventional hand blender, it can suppress that a to-be-cooked object retains in the upper space in a food | hood by the mixing blade arrange | positioned above a cutting blade, and can improve the cutting performance of a to-be-cooked object.

International Publication No. 2012/060470

  However, the conventional hand blender still has room for improvement in terms of further improving the cutting performance of the object to be cooked.

  Accordingly, an object of the present invention is to provide a hand blender and a mixer unit capable of further improving the cutting performance of an object to be cooked by solving the above-described problems.

In order to achieve the above object, the present invention provides:
A bell-shaped hood with an open bottom,
A rotating shaft provided to extend in the vertical direction inside the hood;
A mixer unit comprising: a blade unit provided on the rotary shaft so as to rotate about the rotary shaft;
The blade unit is
A main blade extending laterally from the rotational axis;
A sub-blade whose front end is positioned above the main blade and rotates around the rotation shaft at a position closer to the rotation shaft than the main blade;
With
The sub-blade has a cutting edge capable of cutting an object to be cooked at the front end in the rotation direction.
A mixer unit is provided.

  According to the mixer unit of the present invention, the cutting performance of the object to be cooked can be further improved.

It is the perspective view which looked at the hand blender concerning the embodiment of the present invention from the slanting lower part. It is the perspective view which looked at the mixer unit with which the hand blender of FIG. It is a partially expanded sectional view of the mixer unit of FIG. It is a partially expanded sectional view of the mixer unit of FIG. It is a bottom view of the mixer unit of FIG. It is a perspective view of the blade unit with which the mixer unit of FIG. 2 is provided. It is a top view of the blade unit of FIG. It is a side view of the blade unit of FIG. It is a top view which shows the 1st modification of the blade unit of FIG. It is a perspective view which shows the 2nd modification of the blade unit of FIG.

(Knowledge that became the basis of the present invention)
As a result of intensive studies to further improve the cutting performance of the object to be cooked, the present inventors have obtained the following knowledge.

  The present inventors have found that in a conventional hand blender, an object to be cooked may bite into the mixing blade and rotate with the mixing blade without being guided to the inner wall surface of the hood. During the period when the object to be cooked rotates with the mixing blade, cutting of the object to be cooked is not performed, so that the cutting performance is deteriorated.

  In the conventional hand blender, the mixing blade is for guiding the object to be cooked to the inner wall surface of the hood, and is configured by bending a flat plate. That is, the mixing blade has a uniform thickness and does not cut the object to be cooked.

  As a result of intensive studies based on the above knowledge, the present inventors have cut at the same time while mixing by providing a sub blade having a cutting edge capable of cutting an object to be cooked at the front end in the rotation direction instead of the mixing blade. It has been found that the cutting performance of the object to be cooked can be further improved. In addition, although this inventor also examined changing inclination-angle to the planar view and side view of the mixing blade with respect to a cutting blade, it also discovered that cutting performance could not fully be improved by these changes.

  Based on these points, the present inventors have reached the following invention.

According to the first aspect of the present invention, a bell-shaped hood that opens downward,
A rotating shaft provided to extend in the vertical direction inside the hood;
A blade unit attached to the rotating shaft and provided to rotate about the rotating shaft,
The blade unit is
A main blade extending laterally from the rotational axis;
A sub-blade whose front end is positioned above the main blade and rotates around the rotation shaft at a position closer to the rotation shaft than the main blade;
With
The sub-blade has a cutting edge capable of cutting an object to be cooked at the front end in the rotation direction.
A mixer unit is provided.

  According to the second aspect of the present invention, the cutting edge of the sub blade is configured to be curved in an arc shape so that the inclination angle gradually increases upward as it goes from the front to the rear in the rotation direction. A mixer unit according to the first aspect is provided.

  According to a third aspect of the present invention, there is provided the mixer unit according to the first or second aspect, wherein the cutting edge of the sub blade is located at a position farther from the rotation shaft than the middle in the thickness direction of the sub blade. provide.

  According to a fourth aspect of the present invention, the sub-blade has a shape in which a front end portion in the rotational direction is bent with respect to a main surface of the sub-blade on a side away from the rotation axis. A mixer unit according to any one of the above is provided.

According to the fifth aspect of the present invention, the main blade is a blade whose tip is located in the vicinity of the inner wall surface of the hood and configured to cut the cooking object.
The sub-blade is a blade configured to guide and cut the cooking object located above the main blade and in the vicinity of the rotation shaft toward the inner wall surface of the hood.
A mixer unit according to any one of the first to fourth aspects is provided.

  According to a sixth aspect of the present invention, the main blade and the sub blade are each provided in a plurality at equal intervals around the rotation axis, and the mixing according to any one of the first to fifth aspects A container unit is provided.

  According to the 7th aspect of this invention, a hand blender provided with the mixer unit as described in any one of the 1st-6th aspect is provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

  In addition, for convenience of explanation, terms indicating directions such as “up”, “down”, “horizontal”, “front”, “rear”, etc. are used assuming a state during normal use. It does not mean that the use state of the hand blender is limited.

<Embodiment>
FIG. 1 is a perspective view of a hand blender according to an embodiment of the present invention as viewed obliquely from below.

  As shown in FIG. 1, the hand blender according to this embodiment includes a main body 1 and a mixer unit 2 (also referred to as a blender attachment) that is detachably attached to a lower portion of the main body 1.

  The main body 1 has a cylindrical outer surface that is a part that a user grasps with a hand. The main body 1 has a built-in motor (not shown) that drives a rotary shaft 8 (see FIG. 3) described later. In addition, an operation unit 3 for inputting a user instruction such as “ON” or “OFF” to a control unit (not shown) that controls driving of the motor is provided on the upper portion of the main body 1. A power cord 4 is connected to the upper side of the main body 1. For example, when the power cord 4 is connected to a commercial power source and electric power is supplied to the motor through the power cord 4, the rotating shaft 8 can be rotated.

  The mixer unit 2 is inserted into a container or a pot (not shown) in which an object to be cooked such as vegetables and fruits is placed, and the object to be cooked is mixed by cutting and stirring. The mixer unit 2 connects a bell-shaped attaching / detaching portion 5 that opens upward, a bell-shaped hood 6 that opens downward, and the top of the attaching / detaching portion 5 and the top of the hood 6. And a cylindrical communication pipe 7 that communicates with the space in the hood 6.

  The detachable portion 5 has, for example, a female screw portion (not shown), and the female screw portion is screwed into a male screw portion (not shown) provided at the lower end portion of the main body 1 so that the lower end portion of the main body 1 is attached. Removably connected.

  FIG. 2 is a perspective view of the mixer unit 2 as viewed from below. 3 and 4 are partially enlarged cross-sectional views of the mixer unit 2. FIG. 5 is a bottom view of the mixer unit 2.

  As shown in FIGS. 2 to 5, the mixer unit 2 further rotates so as to rotate around the rotation shaft 8 and a rotation shaft 8 provided to extend in the vertical direction inside the hood 6. And a blade unit 9 provided on the shaft 8.

  The rotating shaft 8 passes through the inside of the communication pipe 7 and is provided so that the upper end portion is located in the detachable portion 5 and the lower end portion is located in the hood 6. In the present embodiment, the rotating shaft 8 is configured to receive a rotational driving force from a motor (not shown) of the main body 1 and rotate clockwise in FIG. For example, the rotating shaft 8 rotates at a speed of about 14,000 rpm with the blade unit 9 attached by the rotational driving force of the motor described above.

  As shown in FIGS. 3 and 4, an annular partition member 10 is provided on the outer peripheral surface of the lower end portion of the communication pipe 7. A packing 11 is provided between the partition wall member 10 and the inner wall surface of the hood 6. Thus, a food-tight seal is provided between the inner wall surface of the hood 6 and the outer peripheral surface of the communication pipe 7 so that an object to be cooked does not enter.

  As shown in FIG. 3, a bearing 12 that rotatably supports the rotary shaft 8 is provided on the inner peripheral surface of the lower end portion of the communication pipe 7. Note that a packing (not shown) for watertight sealing may be provided on the inner peripheral surface of the lower end portion of the communication pipe 7 so that an object to be cooked does not enter the communication pipe 7.

  The blade unit 9 is attached to the tip of the rotating shaft 8 that protrudes downward from the partition member 10. The blade unit 9 rotates about the rotation shaft 8 as the rotation about the rotation shaft 8. In the present embodiment, the blade unit 9 is configured by performing processing such as bending, punching, and polishing on a single metal plate.

  FIG. 6 is a perspective view of the blade unit 9 as viewed from above. FIG. 7 is a plan view of the blade unit 9. FIG. 8 is a side view of the blade unit 9.

  The blade unit 9 includes a main blade 21 extending in the lateral direction from the rotary shaft 8 and a tip 22a positioned above the main blade 21 and closer to the rotary shaft 8 than the main blade 21. And a sub-blade 22 rotating around.

  As shown in FIGS. 4 and 5, the main blade 21 is a blade configured such that the tip end portion 21 a is located in the vicinity of the inner wall surface of the hood 6 and the food to be cooked can be cut. In the present embodiment, the blade unit 9 includes two main blades 21 and 21. As shown in FIG. 7, the two main blades 21 and 21 are configured to be point symmetric or substantially point symmetric about the rotation axis 8 in plan view.

  As shown in FIG. 4, one main blade 21 is provided so as to be inclined slightly upward as it moves away from the rotation shaft 8. The other main blade 21 is provided so as to incline slightly downward as it moves away from the rotating shaft 8. That is, the angle α formed by one main blade 21 and the rotation shaft 8 is smaller than the angle β formed by the other main blade 21 and the rotation shaft 8. With this configuration, the height of the rotation trajectory of one main blade 21 and the rotation trajectory of the other main blade 21 are different, and therefore the chance that the object to be cooked contacts either of the two main blades 21, 21 increases. , Cutting performance is improved.

  Each main blade 21 has a shape in which the width becomes narrower toward the tip portion 21a as a whole. A linear cutting edge 21b capable of cutting an object to be cooked is provided at the front end portion (downstream end portion) of each main blade 21 in the rotation direction (clockwise in FIG. 5). The gap between the tip 21a of each main blade 21 and the inner wall surface of the hood 6 is set to, for example, 2 mm so that the food to be cooked is cut more finely and the food to be cooked is not clogged with the gap.

  The sub-blade 22 is a blade configured to guide and cut the object to be cooked located above the main blade 21 and in the vicinity of the rotation shaft 8 toward the inner wall surface of the hood 6. In the present embodiment, the blade unit 9 includes two sub blades 22 and 22. As shown in FIG. 7, the two sub blades 22 and 22 are configured to be point symmetric or substantially point symmetric about the rotation axis 8 in plan view. Further, the two sub blades 22, 22 and the two main blades 21, 21 are arranged in directions substantially orthogonal to each other so that the center of gravity of the blade unit 9 is located on the rotation shaft 8. Thereby, the blade unit 9 can rotate smoothly around the rotation shaft 8.

  Each sub-blade 22 is formed shorter than the main blade 21. As shown in FIG. 3, each sub blade 22 is provided so as to incline upward as it moves away from the rotation shaft 8. An angle γ formed by the sub blade 22 and the rotating shaft 8 is smaller than an angle α (see FIG. 4) formed by one main blade 21 and the rotating shaft 8.

  A blade edge 22b capable of cutting an object to be cooked is provided at the front end of each sub blade 22 in the rotation direction. In this embodiment, as shown in FIG. 6, the blade edge 22b of the sub blade 22 gradually increases in inclination angle from the front (downstream side) to the rear (upstream side) in the rotational direction. It is comprised so that it may curve in circular arc shape. According to this configuration, when the sub blade 22 rotates, the object to be cooked moves along the arcuate cutting edge 22b. At this time, the blade edge 22b that contacts the same portion of the object to be cooked slides. That is, the object to be cooked is cut so as to be pulled by the blade edge 22b. Thereby, the sub-blade 22 can cut an object to be cooked with a smaller rotational force. As a result, the load on the motor can be reduced through the rotary shaft 8 when the object to be cooked contacts the sub blade 22.

  The blade edge 22 b of the sub blade 22 is located at a position farther from the rotation shaft 8 than the middle in the thickness direction of the sub blade 22. That is, the cutting edge 22 b of the sub blade 22 is located on the outer side away from the rotary shaft 8 in the thickness direction of the sub blade 22. According to this configuration, the cutting performance of the object to be cooked can be improved as compared with the configuration in which the cutting edge 22b of the sub blade 22 is positioned closer to the rotary shaft 8 than the middle of the sub blade 22 in the thickness direction. .

  Further, as shown in FIG. 6, the sub blade 22 has a shape in which the front end portion in the rotation direction is bent toward the side away from the rotation shaft 8 with respect to the main surface 22 c of the sub blade 22. That is, the sub blade 22 includes an arc-shaped bent portion 22d. According to this structure, a to-be-cooked object can be pushed up to the upper space of the food | hood 6 because a to-be-cooked object moves along the bending part 22d. Thereby, a to-be-cooked object can be made to stir more in the food | hood 6. FIG. Further, the cutting edge 22b can be easily formed by creating a step with respect to the main surface 22c by the bending portion 22d and polishing the top of the bending portion 22d.

  Further, as shown in FIG. 6, the sub blade 22 is provided such that the front end portion in the rotation direction of the main surface 22c is closer to the rotation shaft 8 than the rear end portion in the rotation direction of the main surface 22c. Thereby, the to-be-cooked object moving along the cutting edge 22 b of the sub blade 22 is directed to the inner wall surface side of the hood 6, and the to-be-cooked object can be further stirred in the hood 6.

  According to the present embodiment, since the sub blade 22 has the cutting edge 22b, the food to be cooked is prevented from biting into the sub blade 22 and rotating together with the sub blade 22, and the food to be cooked can also be cooked by the sub blade 22. Can be cut. As a result, the cutting performance of the object to be cooked can be further improved.

  Moreover, according to this embodiment, since the blade edge 22b of the sub blade 22 is formed in the circular arc shape, it can cut so that a to-be-cooked object may be pulled with the blade edge 22b. Thereby, the to-be-cooked object can be cut by the sub blade 22 with a smaller rotational force, and the load on the motor can be reduced.

  In addition, according to the present embodiment, the cutting edge 22b of the sub blade 22 is located at a position farther from the rotary shaft 8 than the middle in the thickness direction of the sub blade 22, so that the cutting performance of the object to be cooked can be further improved. it can.

  Moreover, according to this embodiment, since the subblade 22 is provided with the bending part 22d, a to-be-cooked item can be stirred more in the hood 6. Further, the cutting edge 22b can be easily formed.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. For example, in the above description, the blade unit 9 includes the two main blades 21 and 21, but the present invention is not limited to this. For example, the blade unit 9 may include one main blade 21. Further, the blade unit 9 may include three or more main blades 21. In this case, it is preferable that the three or more main blades 21 are provided at equal intervals around the rotation shaft 8. As a result, the center of gravity of the blade unit 9 can be easily positioned on the rotation shaft 8, and the blade unit 9 can be smoothly rotated about the rotation shaft 8.

  In the above description, the blade unit 9 includes the two sub blades 22 and 22. However, the present invention is not limited to this. For example, the blade unit 9 may include one sub blade 22. The blade unit 9 may include three or more sub blades 22. In this case, it is preferable that the three or more sub blades 22 are provided at equal intervals around the rotation shaft 8. As a result, the center of gravity of the blade unit 9 can be easily positioned on the rotation shaft 8, and the blade unit 9 can be smoothly rotated about the rotation shaft 8.

  In the above description, the cutting edge 22b of the sub-blade 22 is located on the outer side away from the rotary shaft 8 in the thickness direction of the sub-blade 22, and is formed in an arc shape. However, the present invention is not limited to this. . For example, as shown in FIG. 9, the cutting edge 22 b of the sub blade 22 may be located on the outer side away from the rotating shaft 8 in the thickness direction of the sub blade 22 and may be formed in a straight line. According to this configuration, it has been confirmed that the cutting performance of the object to be cooked is improved by about 15% compared to the conventional mixing blade. The “cutting performance” was calculated based on the ratio of the cooked material that passed through the cut cooked material through a mesh having a hole diameter of 355 μm.

  Further, for example, as shown in FIG. 10, the cutting edge 22 b of the sub blade 22 may be located in the middle of the thickness direction of the sub blade 22 and may be formed in an arc shape. According to this configuration, it has been confirmed that the cutting performance of the object to be cooked is improved by about 17% compared to the conventional mixing blade. In addition, according to the cutting edge 22b of the sub blade 22 of the said embodiment shown in FIG. 6 etc., it has confirmed that the cutting performance of the to-be-cooked material improves about 17.5% compared with the conventional mixing blade. .

  According to the mixer unit according to the present invention, the cutting performance of the food to be cooked can be further improved. It is also useful as a container unit.

DESCRIPTION OF SYMBOLS 1 Main body 2 Mixer unit 3 Operation part 4 Power supply cord 5 Detachable part 6 Hood 7 Communication pipe 8 Rotating shaft 9 Blade unit 10 Bulkhead member 11 Packing 12 Bearing 21 Main blade 21a Tip part 21b Blade edge 22 Subblade 22a Tip part 22b Blade edge 22c Main surface 22d Bend

Claims (6)

A bell-shaped hood with an open bottom,
A rotating shaft provided to extend in the vertical direction inside the hood;
A mixer unit comprising: a blade unit provided on the rotary shaft so as to rotate about the rotary shaft;
The blade unit is
A main blade extending laterally from the rotational axis;
A sub-blade whose front end is positioned above the main blade and rotates around the rotation shaft at a position closer to the rotation shaft than the main blade;
With
The sub blades, the the food have a cuttable edge to the front end of the rotation direction,
The cutting edge of the sub-blade is configured to be curved in an arc shape so that the inclination angle gradually increases upward as it goes from the front to the rear in the rotation direction.
Mixer unit. The sub-blade cutting edge is located at a position away from the rotational axis than the middle of the thickness direction of the sub-blade mixer unit according to claim 1. The sub-blade has a front end portion of the rotational direction to the main surface of the sub blade is bent to the side away from the rotary shaft type mixer unit according to claim 1 or 2. The main blade is a blade whose tip is positioned near the inner wall surface of the hood and configured to cut the cooking object.
The sub-blade is a blade configured to guide and cut the cooking object located above the main blade and in the vicinity of the rotation shaft toward the inner wall surface of the hood.
The mixer unit according to any one of claims 1 to 3 . The mixer unit according to any one of claims 1 to 4 , wherein a plurality of the main blades and the sub blades are provided at equal intervals around the rotation axis. A hand blender comprising the mixer unit according to any one of claims 1 to 5 .

Images