JP6520355B2 - Electric cooker - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an electric rotary cooker, and more particularly to an electric rotary cooker used by attaching an attachment having a cooking work to a main body incorporating a motor.

  2. Description of the Related Art As a cooking means such as crushing, mixing, nicking, and rolling various kinds of foodstuffs, an electric mixer and the like are conventionally provided which cooks foodstuffs in a container provided with stirring means at the bottom. Recently, a hand-held type electric rotary cooker has been provided that uses the rotary stirring means itself in hand. For example, Patent Documents 1 and 2 disclose an electric rotary cooker including a main body having a motor built therein and an attachment which is detachable from the main body and has a cooking work.

  Moreover, in patent document 3-5, the structure provided with the means (reset switch) for protecting the built-in motor from an overload state in an electric cooker is disclosed.

JP 2012-183206 A JP, 2012-192082, A Patent No. 5560593 JP 2005-87571 A Unexamined-Japanese-Patent No. 2003-153813

  In the handy-type electric rotary cooker, a rated time suitable for use is provided for each attachment. However, when the user actually cooks using the electric rotary cooker, for example, he may be obsessed with cooking and may use it beyond the rated time. The use beyond the rated time leads to the rise of the motor temperature, and if the use continues, the motor will eventually get burned, resulting in the failure of the electric rotary cooker.

  In order to avoid such a problem, it is conceivable to provide the main body with abnormality detection means capable of detecting an abnormality in the motor such as an excessive temperature rise or an overcurrent. For example, the main body is provided with a means such as a thermal protector which shuts off the current supply to the motor when the temperature of the motor rises excessively. However, when such abnormality detection means is of the automatic return type, for example, when the temperature of the motor decreases, the motor automatically returns, and the motor may suddenly start to rotate. If the motor suddenly starts rotating with the attachment attached, the cooking workpiece will suddenly rotate, which is not preferable in terms of safety.

  According to the present invention, in an electric rotary cooker used by attaching an attachment having a work for cooking to a main body incorporating a motor, rotation can be reliably stopped at the time of abnormality of the motor and operation return of the motor can be performed safely. The purpose is to

According to a first aspect of the present invention, there is provided an electric rotary cooker comprising a main body and an attachment used by being attached to the main body, wherein the main body is fixed to a motor, a shaft rotationally driven by the motor, and the shaft A projecting portion that protrudes from the connecting portion for transmitting the rotation of the shaft to the attachment , the cylindrical outer sheath, and the outer sheath to the side on which the attachment is attached and which is hidden when the attachment is attached DOO wherein the attachment when the attachment is mounted on the main body, a fitting portion configured to mate with the connecting portion, according to the rotation of the fitting portion, and the cooking workpiece to be rotated The body is capable of detecting an abnormality in the motor, and interrupting the current supply to the motor when an abnormality is detected, a manual return Further comprising the abnormality detection means, an operation means for performing a return operation of the abnormality detecting means, in said body, said projecting portion is provided, said operating means, and the outer is the attachment exterior The fitting portion is located at a predetermined height in the axial direction of the shaft with reference to the abutting surface which abuts, and the predetermined height is determined from the state where the attachment is attached to the main body. The height is greater than the height corresponding to the length for moving the attachment until it disengages from the connection .

According to this aspect, the body is provided with the manual reset type abnormality detection means capable of detecting an abnormality of the motor and interrupting the current supply to the motor when the abnormality is detected. And the operation means for performing the return operation of this abnormality detection means is provided in the protrusion part which is a part concealed when the attachment is attached in the main body. For this reason, the user can not perform the return operation of the abnormality detection means unless the attachment is removed from the main body when the motor of the electric rotary cooker is stopped due to the occurrence of the abnormality. That is, since it is necessary to once remove the attachment from the main body in order to restore the motor, the problem detection means returns with the attachment attached, and the cooking work starts to rotate. Can be avoided. Therefore, a highly safe electric rotary cooker can be provided. Further, since the operation means is provided on the projecting portion which protrudes from the exterior of the main body to the attachment side, the user can easily perform the return operation of the abnormality detection means in a state where the attachment is removed from the main body. Furthermore, the height in the axial direction of the shaft of the position of the operating means with respect to the contact surface with the attachment of the main body exterior is such that the attachment is removed from the state where the attachment is attached to the main body until the fitting part It is higher than the height equivalent to the moving length. As a result, the user can not operate the operation means unless the fitting portion of the attachment is reliably removed from the connecting portion of the main body. Therefore, it is possible to provide an electric rotary cooker with higher safety.

  In a second aspect of the present invention, in the electric rotary cooker according to the first aspect, the operation means is configured such that the direction in which the return operation is performed is the same as the axial direction of the shaft.

According to this aspect, the operation means for performing the return operation of the abnormality detection means has the same direction as the axial direction of the main shaft because the direction of the return operation is the same as the main shaft. It is unlikely that the return operation will be made by mistake. For this reason, the safety of the electric rotary cooker can be further enhanced .

In a third aspect of the present invention, in the electric rotary cooker of the first or second aspect , the abnormality detection means is a means for detecting an abnormality when the temperature of the motor is excessively increased.

  According to this aspect, since the abnormality detection means detects an abnormality when the temperature of the motor rises excessively, for example, when a heavy load is continuously applied when cutting hard food, the motor becomes overheated, etc. The operation of the motor can be stopped.

In a fourth aspect of the present invention, in the electric rotary cooker according to the first or second aspect , the abnormality detection means is a means for detecting an abnormality when the current supplied to the motor is excessively increased.

  According to this aspect, the abnormality detection means detects the abnormality when the current supplied to the motor is excessively increased, so that, for example, when the motor is locked when cutting a very hard food, etc. You can stop the operation.

  According to the present invention, when the motor of the electric rotary cooker is stopped due to the occurrence of an abnormality, the user needs to once remove the attachment from the main body in order to restore the motor. For this reason, the problem detection means does not return in the state where the attachment is attached, and the problem that the cooking work starts to rotate does not occur. Therefore, a highly safe electric rotary cooker can be provided.

The perspective view which shows the structure of the electrically-driven rotation cooker which concerns on embodiment Front view showing the configuration of an electric rotary cooker according to an embodiment Side view showing the configuration of the electric rotary cooker according to the embodiment Longitudinal sectional view showing the configuration of the electric rotary cooker according to the embodiment The circuit diagram which shows the outline of a circuit structure of the electrically-driven rotation cooker which concerns on embodiment Enlarged view of the body and attachment part The perspective view which shows the structure of the main body in the state which removed the attachment It is an enlarged view of the mounting part of a main body and an attachment, and the figure which shows the state which took off attachment An enlarged view of the mounting portion of the main body and the attachment in a modification

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Configuration of electric rotary cooker>
1 to 4 are views showing the configuration of the electric rotary cooker according to the embodiment, FIG. 1 is a perspective view showing an appearance configuration, FIG. 2 is a front view, FIG. 3 is a side view, and FIG. It is a longitudinal sectional view in a IV-IV line of. The motor-driven rotation cooker 100 illustrated in FIGS. 1 to 4 is, for example, a handy-type blender, and includes a main body 200 and an attachment 300 detachably mounted on the main body 200. In the specification of the present application, the main body 200 side is the upper side and the attachment 300 side is the lower side in the vertical direction of the electric rotary cooker 100. Further, the side provided with the operation stop switch 220 described later is referred to as the front, and the opposite side is referred to as the rear.

  As shown in FIGS. 1 to 3, the main body 200 includes a substantially cylindrical exterior 210. The exterior 210 is, for example, a resin molded body, and mainly includes a lower body portion 211 and an upper neck portion 215. The constricted portion 215 is constricted from the left and right to the center and from the rear to the front, and has a shape that can be stably gripped by a person with a hand. The body portion 211 has a substantially cylindrical shape, and attachment attachment portions 217 used for attaching the attachment 300 are provided on both sides near the lower end.

  As shown in FIG. 4, the main body 200 internally includes a motor 410, a shaft 420 rotationally driven by the motor 410, and a connecting portion 425 for transmitting the rotation of the shaft 420 to the attachment 300. The motor 410 is a normal DC motor, and is housed in the body portion 211 of the exterior 210 such that the rotation axis is along the axis of the body portion 211. The shaft 420 is disposed such that the axis is along the axis of the body portion 211, and is connected to the rotor of the motor 410. Further, the shaft 420 is supported by bearings 431 and 432 disposed above and below the motor 410. The connecting portion 425 is attached to the lower end of the shaft 420.

  The attachment 300 includes a driven shaft 310 and various cooking works 320 connected to the lower end side of the driven shaft 310. At the upper end side of the driven shaft 310, a fitting portion 325 configured to be fitted to the connecting portion 425 when the attachment 300 is mounted to the main body 200 is provided. Thus, when the motor 410 is operated, the shaft 420 and the driven shaft 310 are rotated, whereby the cooking work 320 is rotated, and various cooking operations such as crushing and mixing of various foodstuffs are performed. . The attachment 300 is a blender here, but there are also a beater beater, a dough kneading kneader, a chopper cutter, a grate cutter, and the like.

  The operation stop switch 220 is disposed in front of the neck portion 215 as shown in FIGS. 1 to 3. Further, the lock release switch 230 is a safety switch, and is disposed in the vicinity of the lower side of the operation stop switch 220. When the lock release switch 230 is not pressed, the electric rotary cooker 100 is in a locked state, and the motor 410 does not operate even if the user presses the operation stop switch 220. When the user presses the lock release switch 230, the electric rotary cooker 100 switches from the locked state to the unlocked state. When the user presses the operation stop switch 220 in the unlocked state, the electric circuit accommodated in the exterior 210 is closed, and the motor 410 is operated. Thereafter, even if the user opens the lock release switch 230, while the operation stop switch 220 is pressed, the motor 410 continues to operate. When the user opens the operation stop switch 220, the motor 410 is stopped.

  The rotational speed adjustment dial 240 is a substantially annular member and is provided at the upper end of the main body 200. The rotational speed adjustment dial 240 is attached to the exterior 210 so as to be rotatable about a rotation axis within a predetermined angular range. A variable resistor 450 is provided inside the main body 200 and mechanically connected to the rotational speed adjustment dial 240. When the user operates the rotational speed adjustment dial 240, the current value supplied to the motor 410 is changed by the variable resistor 450, and as a result, the number of rotations of the motor 410 is changed.

  The cord bush 250 is installed to extend upward from the upper side of the main body 200, and guides the power cord 260 extending from the motor 410 upward. Further, an opening OP is formed at the tip end portion 255 of the cord bush 250, and the user can suspend the electric rotary cooker 100 on a hook or the like installed in a kitchen or the like.

  Furthermore, in the present embodiment, the main body 200 includes the one-shot thermostat 500 and the rod 510. The one-shot thermostat 500 is an example of a manual reset type abnormality detecting means, and is disposed along the side surface of the motor 410. One-shot thermostat 500 detects an abnormality and operates when the temperature of motor 410 rises excessively. FIG. 5: is a circuit diagram which shows the outline of a circuit structure of the electrically-driven rotation cooker 100 which concerns on this embodiment. As shown in FIG. 5, when the one-shot thermostat 500 operates, the current to the motor 410 is cut off. As a result, when the temperature of the motor 410 rises excessively, the motor 410 automatically stops.

  FIG. 6 is an enlarged view of a mounting portion of the main body 200 and the attachment 300, and FIG. 7 is a perspective view showing an appearance of the main body 200 in a state where the attachment 300 is removed. As shown in FIGS. 6 and 7, the exterior 210 of the main body 200 has an abutment surface 270 that abuts on the exterior 330 of the attachment 300 on the side where the attachment 300 is mounted. The main body 200 is provided with a projecting portion 280 projecting toward the attachment 300 from the abutting surface 270, and the lower end of the shaft 420 and the connecting portion 425 are provided inside the projecting portion 280. Further, on the surface of the protrusion 280, a guide member 271 having a spiral guide groove for engaging the attachment 300 and a protrusion 272 for generating a click sound when the attachment 300 is mounted are provided. ing.

  The rod 510 is provided to slide along the side surface of the motor 410, the upper end abuts on the return button 501 of the one-shot thermostat 500, and the lower end is exposed from a part of the projection 280 and the return switch 512 Configure By pushing the return switch 512 upward in the axial direction of the shaft 420, the return button 501 of the one-shot thermostat 500 can be pressed. That is, the return switch 512 as the operation means for performing the return operation of the abnormality detection means is provided in the projecting portion 280 which is a portion hidden in the main body 200 when the attachment 300 is attached. Further, the direction in which the return switch 512 performs the return operation is the same as the axial direction of the shaft 420.

<How to use electric cooker>
The user attaches the desired attachment 300 to the main body 200 via the attachment attachment portion 217 and the connection portion 425. Then, for example, the forefinger is positioned at the operation stop switch 220, the middle finger is positioned at the lock release switch 230, and the narrow portion 215 is gripped so that the thumb is positioned at the rotation speed adjustment dial 240. On the other hand, with the hand opposite to the hand holding the neck portion 215, the container etc. containing the food is held, and the attachment 300 is inserted into the container.

  Subsequently, the lock release switch 230 is pressed by the middle finger to set the lock release state, and the operation stop switch 220 is pressed by the index finger to rotate the motor 410. Then, the driven shaft 310 of the attachment 300 connected to the shaft 400 of the main body 200 is rotated, and the user can foam, knead and blend the food. Also, the user can adjust the rotational speed of the motor 410 by rotating the rotational speed adjustment dial 240 with the thumb.

  After that, when, for example, the viscous bread dough is blended, the motor 410 continues to rotate slowly under a high load condition, or the user operates the electric rotary cooker 100 for a considerably longer time than the rated time, for example. In some cases, the temperature of the motor 410 may increase excessively. However, in the present embodiment, the one-shot thermostat 500 is disposed along the side surface of the motor 410, and this one-shot thermostat 500 operates and detects an abnormality when the temperature of the motor 410 rises excessively. . As a result, the current to the motor 410 is cut off, and the motor 410 is automatically stopped. Therefore, the burn-in of the motor 410 and the failure of the electric rotary cooker 100 due to the abnormal heating are prevented in advance.

  The user places the stopped motor-driven rotary cooker 100 on, for example, a cooking table and waits for the heat of the motor 410 to cool. After the heat of the motor 410 cools, the user operates the electric rotary cooker 100 again, but in order to operate again, the one-shot thermostat 500 needs to be manually returned. Therefore, the user once detaches the attachment 300 from the main body 200, and as shown in FIG. Then, the recovery switch 512 provided on the projecting portion 280 is pressed upward, and the one-shot thermostat 500 is recovered. Thereafter, the attachment 300 is attached to the main body 200 again, and the lock release switch 230 is pressed to make the lock release state, and the operation stop switch 220 is pressed to rotate the motor 410.

<Effect of the embodiment>
As described above, according to the present embodiment, the main body 200 is provided with the one-shot thermostat 500 that shuts off the current supply to the motor 410 when the temperature of the motor 410 rises excessively. An operation switch 512 for performing a return operation of the one-shot thermostat 500 is provided in a portion of the main body 200 which is hidden when the attachment 300 is attached. Therefore, when the motor 410 of the electric rotary cooker 100 is stopped due to the overheating, the user can not perform the return operation of the one-shot thermostat 500 unless the attachment 300 is removed from the main body 200. That is, there is no problem that the one-shot thermostat 500 is restored in a state where the attachment 300 is attached, and the cooking work 320 starts to rotate. Therefore, it is possible to provide a highly safe electric rotary cooker 100. In particular, in the handy type electric rotary cooker described above, since the cooking work 320 with a blade or the like is exposed to the outside, it is more effective to enhance the safety according to the present embodiment.

  Further, the return switch 512 for performing the return operation of the one-shot thermostat 500 has the same direction as the axial direction of the shaft 420 in the return operation, so for example, the main body 200 is laid on the cooking table When, it is unlikely that the return operation will be made by mistake. Therefore, the safety of the electric rotary cooker 100 can be further enhanced. The direction in which the return switch 512 performs the return operation may not necessarily be the same as the axial direction of the shaft 420.

  Further, since the recovery switch 512 is provided on the projecting portion 280 which protrudes from the exterior 210 of the main body 200 to the attachment 300 side, the user performs the recovery operation of the one-shot thermostat 500 in a state where the attachment 300 is removed from the main body 200. Can be done easily. The installation position of the return switch 512 is not limited to that shown here, and may be provided in a portion of the main body 200 which is hidden when the attachment 300 is attached.

  Furthermore, the installation position of the return switch 512 can be operated at a position where the attachment 300 is reliably separated from the main body 200, and the cooking workpiece 320 does not rotate even if the motor 410 of the main body 200 rotates temporarily. Is preferred. That is, as shown in FIG. 8, when the outer surface 210 of the main body 200 is based on the contact surface 270 in contact with the outer surface of the attachment 300 in the axial direction of the shaft 420, the return switch 512 is positioned at a predetermined height H It is assumed that It is preferable that the height H be higher than the height corresponding to the length for moving the attachment 300 until the fitting portion 325 is detached from the connecting portion 425 from the state where the attachment 300 is attached to the main body 200. Thus, the user can not operate the return switch 512 unless the fitting portion 325 of the attachment 300 is reliably removed from the connecting portion 425 of the main body 200. Therefore, it is possible to provide the electric rotary cooker 100 with higher safety.

<Modification>
In the above embodiment, the return switch 512 is configured using the rod 510 whose upper end is in contact with the return button 501 of the one-shot thermostat 500 and can slide on the outer surface of the motor 410 as a reference. The configuration of the switch is not limited to this. For example, a guide or a hole by another member may be used to slide the rod. Moreover, you may use members other than a rod, for example, the cylindrical member which slides a motor outer peripheral surface.

  Alternatively, as shown in FIG. 9, the installation position of the one-shot thermostat 500 is made close to the surface of the protrusion 280 by using, for example, a thin motor 411, and the return button 501 of the one-shot thermostat 500 is exposed outside. The return switch 513 may be used.

  Moreover, although the one-shot thermostat 500 was demonstrated to the example as an abnormality detection means which detects the abnormality of the motor 410, it is not restricted to this. For example, another manual reset type temperature detection means may be used. Also, instead of temperature, a manual return type means may be provided to detect the current supplied to the motor 410. That is, there may be provided means for interrupting the current supplied to the motor 410, such as a current breaker, when the current supplied to the motor 410 is excessively increased. By providing the current detection means, it is possible to prevent the failure or destruction of the motor 410, for example, in a case where the rotation of the motor 410 is locked due to the hard cooking material. Then, an operation switch for performing a return operation of the current detection means may be provided in a portion of the main body 200 which is hidden when the attachment 300 is attached.

  Moreover, although the above-mentioned embodiment demonstrated taking the case of the electric-type rotation cooker of a handy type, this embodiment is applicable even if it is a stationary-type electric rotation cooker, for example, an electric mixer etc. That is, if the attachment is attached to the main body and the attachment side cooking workpiece is rotated by the motor on the main body side, the return operation of the motor abnormality detecting means is performed as in the present embodiment. An operation means for performing the operation may be provided in a portion of the main body which is hidden when the attachment is attached. This makes it possible to avoid the problem that the abnormality detection means returns in a state in which the attachment is attached, and the cooking work starts to rotate. Therefore, as in the present embodiment, it is possible to provide a stationary safety-type electric rotary cooker with high safety.

DESCRIPTION OF SYMBOLS 100 electric rotation cooker 200 main body 210 exterior 270 contact surface 280 protrusion 300 attachment 320 attachment work work 325 fitting part 410, 411 motor 420 shaft 425 connection part 500 one shot thermostat (error detection means)
512, 513 Return switch (operation means)

Claims (4)

An electric rotary cooker comprising a main body and an attachment used by being attached to the main body,
The body is
Motor,
A shaft rotationally driven by the motor;
A coupling fixed to the shaft for transmitting rotation of the shaft to the attachment ;
With a cylindrical exterior,
And a protruding portion that protrudes from the exterior to a side on which the attachment is attached, and is hidden when the attachment is attached ,
The attachment is
A fitting portion configured to be fitted to the connecting portion when the attachment is attached to the main body;
And a work for cooking which is rotated according to the rotation of the fitting portion,
The main body further includes a manual reset type abnormality detection means capable of detecting an abnormality of the motor and interrupting a current supply to the motor when an abnormality is detected.
An operation means for performing a return operation of the abnormality detection means is provided on the protrusion in the main body ,
The operation means is positioned at a predetermined height in the axial direction of the shaft with reference to a contact surface on which the outer package is in contact with the outer package of the attachment.
The predetermined height is higher than a height corresponding to a length for moving the attachment from the state where the attachment is attached to the main body until the fitting portion is disengaged from the connecting portion. Electric rotary cooker with. In the electric rotary cooker according to claim 1,
The electric rotary cooker characterized in that the operation means is configured such that the direction in which the return operation is performed is the same as the axial direction of the shaft. The electric rotary cooker according to claim 1 or 2 .
The electric rotation cooker characterized in that the abnormality detection means is a means for detecting an abnormality when the temperature of the motor rises excessively. The electric rotary cooker according to claim 1 or 2 .
The electric rotation cooker characterized in that the abnormality detection means is a means for detecting an abnormality when the current supplied to the motor is excessively increased.

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