JP2005177127A - Motor-driven blender - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor-driven blender without the need of providing a heat slinger for dissolving friction heat by the high-speed rotation of a rotary shaft on the bearing part of the motor-driven blender. <P>SOLUTION: The motor-driven blender comprises a main body equipped with a driving motor inside, where a rotationally driven output connector is projectingly provided, a crushing body provided with a rotary blade 25 connected with a passive connector on the inner bottom of a container part (21) where the passive connector engaged with the output connector is provided projectingly downwards, and a lid container body mounted on the top of the crushing body. A rotary shaft part 23 formed by inserting the rotary shaft 232 to a cylindrical shield ball bearing body 231, attaching a mechanical seal part 233 at the upper and lower parts of the bearing body and protruding the rotary shaft is arranged at the bottom part of the crushing body, and the passive connector and the rotary blade are connected. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electric mixer mainly used for grinding food.

  Various types of electric mixers that grind food with a rotary blade have been known. The present invention is particularly connected to a passive connector on the inner bottom of a container portion that has a drive motor and is provided with a projecting output connector that is driven to rotate, and a passive connector that projects downwardly to mesh with the output connector. The present invention relates to an electric mixer having a structure including a crushed body provided with a rotary blade and a lid container body to be crowned on the crushed body.

  The electric mixer stores food to be crushed in a container portion of the crushed object, and attaches the lid container body to the crushed object, or stores food in an inverted lid container body, and covers the crushed object. The food is put into the container body and the food is sealed, and in this state, the food is crushed by the rotational drive of the rotary blade by the engagement of the output connector of the main body and the passive connector of the crushed body.

  By the way, the rotating shaft which connects the passive connector and rotary blade in a crushed body is supported by the bearing of the bottom face part of the crushed body. In this bearing structure, a heat dissipating structure has been added.

  For example, in Japanese Utility Model Publication No. 62-7238 (Patent Document 1), even when an oilless bearing impregnated with oil for high-speed rotation is used, the viscosity of the oil decreases due to frictional heat and flows out. It is disclosed that a heat radiating member is attached to the oil-less bearing (bearing) because there is a risk of seizing due to running out of oil.

  In addition, in Japanese Utility Model Publication No. 7-40353 (Patent Document 2), apart from the bearing provided on the bottom surface of the crushed body on the rotating shaft, a heat sink having a bearing is provided below the crushed body, and the temperature of the rotating shaft itself increases. The structure which prevents this is disclosed.

Japanese Utility Model Publication No. 62-7238. Japanese Utility Model Publication No. 7-40353.

  As described above, in the electric mixer, it is necessary to provide the crushed body with a bearing, and since it is necessary to eliminate frictional heat due to the high-speed rotation of the rotating shaft, a heat dissipation structure is adopted.

  However, the incorporation of a heat sink increases the manufacturing process and decreases the manufacturing efficiency. In particular, the structure described in Patent Document 2 is provided with two upper and lower bearings, which further increases the complexity of manufacturing.

  Furthermore, the provision of a heat sink adds the rotational resistance of the heat sink to the rotating shaft, and lowers the pulverization efficiency.

  Therefore, the present invention proposes a novel electric mixer that does not require a heat sink.

  The present invention (Claim 1) includes a main body with a drive motor and a rotationally driven output connector, and a passive connector that meshes with the output connector on the inner bottom of a container portion that projects downward. In an electric mixer comprising a crushed body provided with a rotary blade connected to a connector and a lid container body to be crowned on the crushed body, a rotating shaft is inserted into a cylindrical shield ball bearing bearing body In addition, a rotary shaft portion formed by attaching a mechanical seal portion above and below the bearing body and projecting the rotary shaft is disposed at the bottom of the crushed body, and the passive connector and the rotary blade are connected to each other. It is what.

  Therefore, by incorporating the rotating shaft part into the pulverized body and the bearing structure adopting the ball bearing, the frictional resistance of the bearing part is drastically reduced. It is a thing. And since the said bearing body is sealed by the mechanical seal part, the penetration | invasion of the crushed food powder is prevented.

  Further, according to the present invention (Claim 2), in the above configuration, in particular, the crushed body is composed of a container-shaped upper container body portion and a lower bearing housing body portion, and the upper end portion of the rotating shaft portion is centered on the bottom portion of the upper container body portion. The lower bearing housing portion is provided with a bearing housing portion having an opening at the top and a shaft hole in which the lower end portion of the rotating shaft portion is fitted on the bottom surface. The housing is housed in the bearing housing portion, and the upper container body portion and the lower bearing housing body portion are connected by projecting the rotating shaft of the rotating shaft portion to the upper container body portion.

  Accordingly, when the rotary shaft portion is incorporated into the lower bearing housing portion and the lower bearing housing portion is connected to the upper container body by means such as screwing, the rotational shaft portion is incorporated.

  As described above, the present invention (Claim 1) employs a rotating shaft portion provided with a ball bearing bearing body and sealed in the rotating shaft portion provided in the pulverized body in the electric mixer. This eliminates the need for simplifying the assembly process and reducing the equipment efficiency due to the use of a heat sink.

  Further, according to the present invention (Claim 2), the crushed body is composed of a container-shaped upper container body portion and a lower bearing housing body portion, and the rotating shaft portion can be incorporated together when assembling both members. This is a simplification.

Next, an embodiment of the present invention will be described. The electric mixer shown in the embodiment includes a main body 1, a crushed body 2, and a lid container body 3.

  The main body 1 includes a drive motor 12 in a predetermined case 11, a storage space 13 for the crushed body 2 at an upper portion thereof, an output connector 14 and a cushion base portion 15 provided in the storage space 13, and the drive motor 12. A switch operation unit 16 for controlling the operation is provided.

  The drive motor 12 is connected to the power cord 121 through the micro switch 161 of the switch operation unit 16, and the output connector 14 is mounted on the output shaft (rotary shaft).

  The storage space 13 is formed above the drive motor 12, and a vertical guide portion 132 formed in a groove is formed on the inner peripheral surface of the peripheral wall portion 131.

  Further, an output connector 14 whose upper surface is formed in a chevron shape for fitting is protruded from the center bottom of the storage space 13, and a cushion base 15 is provided so as to surround the output connector 14. .

  The cushion base portion 15 is formed by a ring-shaped base portion 151, a leg portion 152 that is provided so as to be extendable and a ridge 153 that is attached to the leg portion 152 and biases the base portion 151 upward. The range of the vertical movement of the part 151 is that the crushed body 2 described later is simply placed on the pedestal part 151, the switch operating unit 16 is not operated, and the crushed body 2 is down-pressed to output the connector 14 and the passive connector. When the switch 24 is completely engaged, the switch operation unit 16 is in a lower position where it operates.

  The switch operation unit 16 includes a micro switch 161 that turns on and off the power of the drive motor 12 and an operation shaft (bar-shaped member) 162 that operates the micro switch 161. The operation shaft 162 moves up and down at a predetermined position. It is incorporated in the case so that its tip is allowed to face an opening 163 provided on the upper end surface of the peripheral wall of the storage space 13 and is arranged in a non-projecting state. The top part of the peripheral wall part 131 in which the opening part 163 is formed is formed to be slightly recessed.

  The crushed body 2 includes an upper container body portion 21, a lower bearing housing body portion 22, a rotary shaft portion 23, a passive connector 24, and a rotary blade 25.

  The upper container body portion 21 has an outer diameter container shape stored in the storage space 13, and has a guide portion (protrusion portion) 211 corresponding to the vertical guide portion 132 on the outer peripheral surface, and a screw groove 212 on the inner peripheral surface. The packing 213 is mounted immediately below the inner peripheral surface, and the shaft hole of the rotary shaft portion 23 is formed in the center of the bottom surface.

  The lower bearing housing part 22 is attached to the lower part of the upper container part 21 with a screw or the like, and has a shaft hole that opens at the center and fits the lower end of the rotary shaft part 23 at the bottom in the center part. A perforated cylindrical bearing housing 221 is provided.

  The rotating shaft portion 23 has an existing cylindrical shield ball bearing bearing body (structure in which upper and lower two-stage ball bearing bearings are connected by a curled cylinder and the upper and lower ends are covered to prevent leakage of internal grease). A rotary shaft 232 is inserted and a mechanical seal portion (rubber seal is covered with a thin metal plate) 233 is provided above and below the bearing body 231 so that the rotary shaft 232 protrudes up and down. It is. Further, a screw is engraved on the protruding rotating shaft 232.

  Then, the rotating shaft portion 23 is housed in the bearing housing portion 221 of the lower bearing housing portion 22, and the lower bearing housing portion 22 is connected to the upper container body portion 21 by means such as screwing. Further, a passive connector 24 that engages with the output connector 14 is attached to the rotary shaft 232 that projects downward from the lower bearing housing portion 22, and the rotary blade 25 is attached to the rotary shaft 232 that projects from the bottom surface of the upper container body portion 21. When installed, the crushed body 2 is assembled.

  The lid container body 3 includes a transparent container body portion 31 and a ring body portion 32. The transparent container body portion 31 has a dome shape, and a screw groove 311 that is screwed into a screw groove 212 of the upper container body portion 21 on the lower outer periphery. Further, a concave groove 312 for mounting the ring body portion 32 is formed at an appropriate position on the lower outer periphery.

  The ring body portion 32 has an outer diameter corresponding to the peripheral wall portion 131 of the main body 1, is fitted in the groove 312 as a shape in which the top portion is bent inward, and is disposed in a band shape below the transparent container body portion 31. , Which is mounted so as to be able to rotate arbitrarily, and has a shape corresponding to the recess of the top surface of the peripheral wall 131 in which the opening 163 is formed, and a protrusion that can enter the opening 163 at the location ( An action part) 321 is provided.

  Thus, the electric mixer is composed of three members, that is, the main body 1, the crushed body 2, and the lid container body 3, and the use state thereof will be described below.

  The food to be crushed can be stored in the upper container body portion 21 of the crushed body 2 and the lid container body 3 can be screwed on when the food is to be crushed. Then, the crushed body 2 is screwed and mounted, and the crushed body 2 in which food is integrated and the lid container body 3 are accommodated inside.

  In particular, since the crushed body 2 and the lid container body 3 are screwed and attached, they are not detached at the time of use compared to those connected by fitting means such as a conventional device.

  Then, hold the crushed body 2 and the lid container body 3 (hereinafter referred to as “housing body”) holding the object to be crushed by hand and fit the crushed body 2 into the storage space 13 with the vertical guide portion 132 and the guide portion 211. Insert them together. At this time, the ring body portion 32 is rotated to associate the recessed portion of the peripheral wall portion 131 with the protruding portion 321.

  By simply storing the crushed body 2 of the storage body in the storage space 13, the output connector 14 and the passive connector 24 are completely engaged with each other while the lower bearing body storage portion 22 is placed on the cushion base portion 15. It is not a state, but a little away.

  Therefore, when the lid body 3 of the storage body is pressed downward, the storage body moves slightly downward, the output connector 14 and the passive connector 24 are completely engaged, and at the same time, the protrusion 321 enters from the opening 163. The operation downpipe 162 is pushed downward, the micro switch 161 is operated, the drive motor 12 is energized, the rotary blade 25 is driven to rotate, and the stored food is pulverized.

  In particular, in the crushing operation described above, the rotational reaction force is suppressed by the fitting between the vertical guide portion 132 and the guide portion 211, and a heat sink is not provided as in the conventional device, and rotational vibration due to the heat sink occurs. There is no room for efficient crushing.

  When the container is lightly down-pressed for a desired time (crushing time), sufficient food crushing is performed, and when the pressurization is released, the container is pushed up by the urging force of the cushion base 15 and the switch-on state by the protrusion 321 The drive motor 12 is released.

  When the container is taken out and the crushed body 2 is removed from the lid container body 3 in the inverted state, the crushed food is contained in the lid container body 3, and then the crushed food is transferred to appropriate tableware or cooked directly. It is intended to be used.

1 is an overall perspective view of an embodiment of the present invention. Explanatory drawing of the main body (a partially cut front view). Explanatory drawing of the crush body (a front view partly cut). Explanatory drawing of the assembled state of the rotating shaft Explanatory drawing of the lid container body (front view partly cut). Explanatory drawing of the switch operation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 11 Case 12 Drive motor 13 Storage space 131 Peripheral wall part 132 Vertical guide part 14 Output connector 15 Cushion base part 151 Base part 152 Leg part 153 Stroke 16 Switch operation part 161 Micro switch 162 Operation vertical rod (bar-shaped member)
163 Opening part 2 Crush body 21 Upper container body part 211 Guide part (protrusion part)
212 Thread groove 213 Packing 22 Lower bearing housing part 221 Bearing housing part 23 Rotating shaft part 231 Bearing body 232 Rotating shaft 233 Mechanical seal part 24 Passive connector 25 Rotating blade 3 Cover container body 31 Transparent container body part 311 Screw groove 312 Concave groove 32 Ring body part 321 Projection part (action part)

Claims (2)

A rotary blade connected to the passive connector is provided on the inner bottom of the container part that has a drive motor and has a projecting output connector that is driven to rotate and a passive connector that meshes with the output connector. In the electric mixer comprising the crushed body and a lid container body to be crowned on the crushed body,
Insert the rotating shaft into the cylindrical shield ball bearing bearing body, and place the rotating shaft part formed by attaching the mechanical seal part above and below the bearing body and projecting the rotating shaft at the bottom of the crushed body An electric mixer comprising a passive connector and a rotary blade connected to each other.   The crushed body is composed of a container-shaped upper container body portion and a lower bearing housing body portion, and a shaft hole into which the upper end portion of the rotating shaft portion is fitted is formed in the center of the bottom portion of the upper container body portion. The portion is provided with a bearing housing portion having an opening at the top and a shaft hole in which the lower end portion of the rotating shaft portion is fitted on the bottom surface. The rotating shaft portion is housed in the bearing housing portion, and the rotating shaft of the rotating shaft portion is The electric mixer according to claim 1, wherein the upper container body portion and the lower bearing housing body portion are connected by protruding the upper container body portion.

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