JP2012183206A - Electrical rotary food processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric rotary food processing device, such as a blender, configured to fit and combine a device body and attachments including food processing workpieces to each other in a removable manner, which always secures the driving of the device body and the attachment in an appropriate mounting state.SOLUTION: The electrical rotary food processing device includes: the device body including a motor and a driving shaft rotated by the motor; and the attachments interchangeable to be removably mounted to the driving shaft of the device body, and including various food processing workpieces rotationally driven in the mounted state. The attachment has a driven shaft configured not to be driven, when the attachment is not appropriately mounted to the driving shaft of the device body.

Description

  The present invention relates to a configuration of an electric rotating device for cooking, in particular, a handy type electric rotating device for cooking used by a user.

  Recently, as a cooking means to crush, mix, knead and lower various ingredients, it is a rotary type instead of a conventional mixer that cooks ingredients in a container equipped with a stirring means at the bottom. There is provided a handy type electric rotating device for cooking which is used by holding the stirring means itself (see, for example, Patent Document 1).

  For example, as shown in FIG. 10, the electric rotating device for cooking includes a device main body 1 held by a user, and various attachments that are replaceably attached to the device main body 1 (the illustrated one is a blender). However, there is a beating beater, a dough kneader, a chopper cutter, a grated cutter, etc.) 2, and a motor (not shown) as a drive source of the attachment 2 is built in the apparatus body 1. ing.

  That is, the lower end side of the apparatus main body 1 is formed in the fitting portion A of the attachment 2 having a multi-stage protruding structure having different outer diameters and lengths, and the multi-stage on the upper end side of the attachment 2 with respect to the fitting portion A. A fitting portion B having a concave structure is fitted.

  The fitting portion A on the side of the apparatus main body 1 is on the first convex part 1b having a slightly smaller diameter and shorter length than the body part of the apparatus main body 1, and on the central part side of the first convex part 1b. The second convex portion 1c is smaller in diameter than the first convex portion 1b and has a longer protruding length. The second convex portion 1c is formed in a cylindrical body, and is provided on the inner side of the second convex portion 1c on the tip side of a drive shaft that is an output shaft of an attachment drive motor provided in the apparatus main body 1. A connection engaging portion 6a with the attachment 2 side driven shaft is provided. Moreover, the helicoid piece 7a for engagement with the attachment 2 side helicoid piece 7b is provided in the outer peripheral surface side.

  On the other hand, the fitting portion B on the attachment 2 side is on the uppermost end side, and the first fitting concave portion 2b that fits the first convex portion 1b of the device main body 1 side fitting portion A; The second fitting recess 2c is smaller in diameter and longer than the first fitting recess 2b and fits into the second protrusion 1c of the device body 1 side fitting portion A.

  Further, on the lower side inside the second fitting recess 2c, there is a connection engaging portion 6b of the attachment 2 side driven shaft that engages and is driven by the connection engaging portion 6a on the driving shaft front end side. The inner peripheral surface portion is provided with a helicoid piece 7b extending in the same axial rotation direction that engages with the helicoid piece 7a extending in the axial rotation direction of the outer peripheral surface portion of the second convex portion 1c.

  The attachment 2 is driven via the driven shaft on the lower end side of the attachment main body 2d having the fitting part B on the upper end side, for example, a necessary cooking work 2a such as the illustrated blend cutter and a necessary guard cover 2e. It is prepared for.

  In use, the first and second fitting recesses 2b and 2c of the fitting portion B of the attachment 2 are made to be opposite to the first and second protrusions 1b and 1c of the fitting portion A of the apparatus body 1. The motor-side drive shaft of the apparatus main body 1 and the cooking work 2a-side driven shaft are connected and rotated to the right side, for example, so that the helicoid piece 7a of the first convex portion 1b described above and the first The helicoid piece 7b of the two fitting recesses 2c is engaged with each other to be integrated with the apparatus main body 1.

  On the other hand, an operation switch 3 for performing drive control of the motor and a rotation speed adjusting means 4 are provided on the outer peripheral surface portion of the apparatus main body 1.

  The operation switch 3 is composed of two sets of switches, that is, an operation switch 3a and an unlock switch 3b. For example, when the operation switch 3a is pushed while pushing the lock release switch 3b, the internal electric circuit (motor drive circuit) is supplied with power. And the above-mentioned motor is driven, and a predetermined rotating part (a blend cutter provided in a hemispherical guard cover 2e in the illustrated example) on a front end side of a predetermined attachment (the illustrated one is a blender) 2 2a rotates.

  Once the motor drive circuit is turned on in this way, when the operation switch 3a is kept pressed and the finger is released from the lock release switch 3b (stopping the pressing), the operation is continued, that is, the predetermined rotating portion described above. The cooking operation can be continued by rotating. On the other hand, when the finger is released from the operation switch 3a from the same state, the driving of the motor is stopped.

JP 2006-325920 A

  However, in the case of the conventional configuration of FIG. 10, the attachment 2 side first and second fitting recesses 2b and 2c are fitted to the apparatus main body 1 side first and second projections 1b and 1c, and the central axis Since only the helicoid is engaged by being relatively rotated in parallel with each other, sometimes the two are not reliably engaged, and the device main body 1 side motor drive shaft and the attachment 2 side driven shaft are connected to each other. Due to the driving in a state where the portions 6a and 6b are not sufficiently engaged with each other, the coupling engaging portions 6a and 6b are damaged, and there is a problem that the driving becomes impossible.

  The present invention has been made in order to solve such a problem. By preventing the attachment from being driven unless the attachment is securely attached to the apparatus body, the apparatus body side drive shaft is provided. It is an object of the present invention to provide an electric rotating device for cooking that does not cause damage to a coupling engagement portion between the attachment-side driven shaft and the attachment-side driven shaft.

  In order to achieve the above object, each invention of the present application includes the following problem solving means.

(1) Invention of Claim 1 The problem-solving means of this invention is detachably mounted on a device main body having a motor and a drive shaft rotated by the motor, and on the drive shaft portion of the device main body. An electric rotating device for cooking comprising a replaceable attachment with various cooking workpieces that are rotationally driven in the case where the attachment is not properly attached to the drive shaft portion of the device body Is characterized in that the attachment driven shaft is not driven.

  According to such a configuration, when the attachment including the various cooking workpieces is not properly attached to the drive shaft portion on the apparatus main body side including the motor and the drive shaft, the attachment is provided. The driven shaft on the side is not driven.

  Accordingly, as in the prior art, in a state where the drive shaft rotated by the motor on the apparatus main body side and the engagement portion for connecting the driven shafts for rotating the cooking work on the attachment side are not properly engaged. Even when the motor on the apparatus main body side is driven, the connecting engagement portion is not damaged, and the proper cooking work can be driven only when it is properly attached.

(2) Invention of Claim 2 The problem solving means of the present invention comprises a device body provided with a motor and a drive shaft rotated by the motor, and is detachably helicoidally engaged with the drive shaft portion of the device body. An electric rotating device for cooking comprising a replaceable attachment having various cooking workpieces that are rotationally driven in a helicoid engaged state, wherein the attachment is properly attached to the drive shaft portion of the device body. If not, a large gap of a predetermined dimension or more is formed in the helicoid engagement portion between the apparatus main body and the attachment.

  According to such a configuration, when the attachment is not properly attached to the drive shaft portion of the apparatus main body, a large gap of a predetermined dimension or more is formed in the helicoid engagement portion between the apparatus main body and the attachment. Therefore, the apparatus main body side drive shaft and the attachment side driven shaft are not engaged with each other even though they are not properly mounted, and the helicoid engagement portion between the apparatus main body and the attachment From the size of the gap that can be made, it can be easily determined at a glance whether or not the attachment is properly attached to the drive shaft portion of the apparatus main body.

  Therefore, when the attachment is not properly attached to the apparatus main body, the user can attach it again and proceed to the necessary cooking operation.

(3) Invention of Claim 3 The problem-solving means of the present invention is a device body provided with a motor and a drive shaft rotated by the motor, and detachably helicoidally engaged with the drive shaft portion of the device body. An electric rotating device for cooking comprising a replaceable attachment having various cooking workpieces that are rotationally driven in a helicoid engaged state, wherein the attachment is helicoidally engaged with a drive shaft portion of the device main body. In this case, the gap between the attachment and the apparatus main body is configured to gradually decrease from the initial engagement position toward the final engagement position.

  In such a configuration, when the attachment is helicoidally engaged with the drive shaft portion of the apparatus main body, the gap between the attachment and the apparatus main body gradually increases from the initial engagement position toward the final engagement position. Since it is configured to be small, the apparatus main body side drive shaft and the attachment side driven shaft are not engaged even though they are not properly mounted, and the attachment and the apparatus main body are not engaged. It is possible to easily determine at a glance whether or not the attachment is properly attached based on a dimensional change in which the gap between the initial engagement position and the final engagement position decreases.

  Therefore, when the attachment is not properly attached to the apparatus main body, the user can attach it again and proceed to the necessary cooking operation.

  As a result of the above, according to the present invention, the cooking function in an appropriate attachment wearing state is always ensured.

It is a perspective view which shows the structure by the side of the apparatus main body of the electric rotating apparatus for cooking which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure by the side of the attachment of the electric rotating apparatus for cooking. It is an expansion perspective view which shows the structure of the apparatus main body side fitting part of the electric rotating apparatus for cooking. It is an expansion perspective view which shows the structure of the attachment side fitting part of the electric rotating apparatus for cooking. It is a figure which shows the structure (plane structure a, front structure b, bottom structure c) of the connection engaging part of the apparatus main body side drive shaft of the same electric rotating apparatus for cooking. It is a figure which shows the structure (The plane structure a, the front structure b, and the bottom face structure c) of the connection engagement part of the attachment side driven shaft of the electric rotating apparatus for cooking. It is a perspective view which shows the structure of the apparatus main body side principal part of the electric rotating apparatus for cooking which concerns on Embodiment 2 of this invention. It is a front view which shows the structure in the appropriate fitting state of the apparatus main body and attachment of the electric rotating apparatus for cooking which concerns on Embodiment 3 of this invention. It is a front view which shows the structure in the improper fitting state of the apparatus main body and attachment of the electric rotating apparatus for cooking. It is a disassembled perspective view which shows the whole structure of the conventional electric rotating apparatus for cooking.

<Embodiment 1>
1-6 has shown the structure of the whole electric rotating device for cooking which concerns on Embodiment 1 of this invention, and each part.

  An electric rotating device for cooking according to this embodiment is detachably fitted to a device main body 1 having a motor and a drive shaft rotated by the motor, and the drive shaft portion of the device main body 1, and is in the same fitting state. And the exchangeable attachment 2 provided with various cooking workpieces 2a that are rotationally driven in the above-mentioned manner. The attachment 2 is spiral guide members 8a and 8b and a spiral guide member with respect to the drive shaft portion of the apparatus body 1. The helicoid is engaged in a screwed state via the guide groove 8c, and when engaging with each other, the contact surface T2 at the upper end of the attachment 2 side fitting portion and the apparatus main body 1 side are fitted. The gap with the contact surface T1 at the upper end of the part is large at the initial engagement position (first axial contact position), and gradually decreases from the initial engagement position toward the final engagement position. Final In the properly engaged final engaged position it is characterized by being configured to substantially gap is eliminated.

  As a result, it is easy to discriminate between a proper mounting state and a case where it is not, and the driven shaft 20 on the attachment 2 side is properly engaged (mounted) with the driving shaft of the apparatus main body 1. In the state in the middle of engagement from the initial stage of engagement to the stage before the final engagement, even if the motor on the apparatus main body 1 side is driven, the driven shaft 20 on the attachment 2 side is not driven. Yes.

  1 and 3, reference numeral 1 denotes an apparatus main body including a motor and a drive shaft (not shown) that is rotated by the motor inside a substantially cylindrical body 1 a.

  An AC power cord 5 for supplying AC power for driving to the internal motor is connected to the upper end side of the apparatus main body 1, while the lower end side is, for example, as shown in FIGS. 2 and 4. An attachment fitting portion A for fitting and integrating the attachment 2 for cooking food is provided.

  The attachment fitting portion A includes a first convex portion 1b having a slightly smaller diameter than the outer diameter of the body portion 1a of the apparatus main body 1 and a downward projecting length (projecting width) that is short (small). From the second convex portion 1c, which is on the center side of the convex portion 1b, has a smaller diameter than the outer diameter of the first convex portion 1b and a long (larger) downward projecting length (protruding width). It has become.

  The second convex portion 1c is formed in a cylindrical body having a cylindrical space with a predetermined depth extending in the vertical direction on the inside thereof, and the space portion is provided in the apparatus main body 1. A drive shaft lower end portion from a motor (not shown) and an attachment 2 side driven shaft 20 side connecting engagement portion 6b (see FIGS. 6A to 6C) provided at the lower end of the drive shaft. The connecting engagement portion 6a (see FIGS. 5A to 5C) is supported downward. On the other hand, a male screw piece (male screw-like helicoid engaging piece) 9a in the spiral direction of the attachment 2 side fitting portion B, which will be described later, is engaged with the upper end portion on the outer peripheral surface side of the second convex portion 1c in the axial direction. A large-diameter guide member 8 having first and second spiral guide members 8a and 8b and a spiral guide groove (helicoid piece engaging groove) 8c that guides in a spiral direction is provided. .

  The large-diameter guide member 8 is formed with a constant thickness in the circumferential direction and a predetermined width in the axial direction, but the first half 1 of the arc angle range of about ½ or less in the circumferential direction. For example, as shown in an enlarged view in FIG. 3, in the / 2 portion, the width in the vertical direction is reduced in the spiral direction from one end side in the circumferential direction (left end side in FIG. 3) to the other end side (right end side in FIG. 3). In the same spiral direction, between the first spiral guide member 8a and the other end in the circumferential direction (the right end side in FIG. 3) of the first spiral guide member 8a. A second grooved guide member 8b is also provided, which extends in the spiral direction so as to form a guide groove 8c for engaging with the male screw piece 9a. The width is continuously integrated in the circumferential direction. Further, below the second spiral guide member 8b, a click sound generating convex portion 10 that can project in an installation hole portion having a predetermined depth is provided.

  On the other hand, in FIGS. 2 and 4, reference numeral 2 denotes a replaceable attachment provided with various cooking workpieces 2 a that are used by being fitted and integrated with the fitting portion A of the apparatus main body 1. Yes.

  In the illustrated example, as an example of the attachment 2, for example, a configuration in the case of a blender provided with a blender cutter 2 a for cooking object stirring cutting is shown, but as the attachment 2, in addition to the illustrated blender, For example, the shape of the attachment part is slightly different depending on the type of cooking work to be attached to the cooking work attachment part on the lower end side of the driven shaft 20 such as for whipping beaters, dough kneaders, chopper cutters, grated cutters, etc. Various types are prepared, but at least a fitting part B fitted to the fitting part A of the apparatus main body 1, a cooking work mounting part for mounting a corresponding cooking work, the apparatus main body 1 A driven shaft 20 that is engaged with the drive shaft on the side and rotates the cooking work mounting portion, an attachment main body 2d including each of them, and the like In terms that are common in any case.

  Therefore, in the present embodiment, a common configuration will be described by taking the case of the illustrated blender attachment 2 as an example.

  That is, the attachment 2 has a fitting part B that fits into the fitting part A on the apparatus main body 1 side on the upper end side of the main body part 2d, and the driven shaft 20 and the main body part in the main body part 2d. A mounting portion for a cooking work (a blender cutter in the illustrated example) 2a is provided on the lower end side of 2d (lower end side of driven shaft 20).

  The fitting portion B of the attachment 2 main body portion 2d is on the uppermost end side, and has a large inner diameter that fits the first convex portion 1b on the large-diameter side of the device main body 1 side fitting portion A. The first fitting recess 2b having a short (small) length (width), an inner diameter smaller than the first fitting recess 2b, and a vertical length (width) being long (large), It consists of a second fitting recess 2c that fits into the second protrusion 1c of the fitting portion A on the apparatus body 1 side.

  An attachment 2 side driven portion that engages and is driven by a connecting engagement portion 6a provided on the distal end side of the apparatus main body 1 side drive shaft is provided at the inner lower portion of the center of the second fitting recess 2c. A connecting engagement portion 6b at the upper end of the shaft 20 is provided, and the inner peripheral surface portion includes first and second spiral guide members 8a and 8b on the outer peripheral surface portion of the second convex portion 1c and a spiral shape. A helical male screw piece 9a having a predetermined arc width that engages (screws) with the male screw piece guide groove 8c is provided so as to be inclined in the spiral direction.

  The lower part of the spiral male screw piece 9a of the second fitting recess 2c has a higher one end (left end in FIG. 4) 9d side and the other end (right end in FIG. 4) 9c. Two curved surface ridge members 9b whose sides are lowered are provided in parallel. As will be described later, when the attachment 2 (its main body portion 2d) is fitted and integrated with the device main body 1, the convex strip member 9b is formed on the outer peripheral surface of the device main body 1 side second convex portion 1c. By pressing the convex portion 10 for generating the click sound against the spring force, and once immersing it into the installation hole, it is projected again, so that a firm click sound is produced at the final engagement position. And the user can easily recognize that the attachment 2 has been attached to the fitting portion A of the apparatus main body 1 accurately and reliably.

  In this state, the contact surface at the upper end of the fitting portion A on the apparatus main body 1 side (the upper end of the first convex portion 1b and the outer peripheral edge of the body portion 1a, which was large at the initial engagement position abutted in the axial direction) Between the contact surface T1 and the contact surface of the upper end of the attachment 2 side fitting portion B (the upper end surface of the first fitting recess 2b) T2, and the contact surfaces T1 and T2 are completely separated from each other. It will be in a state of touching.

  Therefore, the user can determine that the attachment 2 is properly attached to the apparatus main body 1 even from the state of the gap.

  The connection engaging portion 6a at the tip of the drive shaft on the apparatus main body 1 side is connected and fixed to the lower end of the drive shaft through an attachment hole 61 to the lower end of the drive shaft on the upper end side, and has a cross-like shape on the lower end side. There is an engagement groove 62 (see FIG. 5C), butterflies are provided on both sides of the central cylinder portion 63 attached to the upper end of the attachment-side driven shaft 20 in the cross-shaped engagement groove 62. A coupling engagement portion 6b having a blade-like engagement piece 63a, 63a (plane: see FIG. 6 (a), front: see FIG. 6 (b)) is coaxially inserted and engaged. Yes. In addition, a fitting hole 64 having a square cross section is provided on the lower end side of the coupling engagement portion 6b on the driven shaft 20 side and is fitted and fixed to the regular prism portion on the upper end side of the driven shaft 20.

  Further, an operation switch 3 for controlling the driving of the motor is provided on the outer peripheral surface of the body portion 1a of the apparatus main body 1 described above, and a dial-type rotational speed adjusting means 4 is provided on the outer periphery of the upper end portion.

  The operation switch 3 comprises, for example, two sets of an upper operation switch 3a and a lower lock release switch 3b. When the operation switch 3a is pressed while the lock release switch 3b is being pressed, an internal electric circuit (motor drive) Circuit) is turned on, the motor in the apparatus main body 1 is driven, the drive shaft directly connected is rotated, and the driven shaft 20 side predetermined cooking work connected to and engaged with it (shown is a blender cutter) 2a rotates.

  Once the motor drive circuit is turned on in this way, when the operation switch 3a is kept pressed and the finger is released from the lock release switch 3b (the pressing is stopped), the operation is continued, that is, the above-described predetermined cooking purpose. The cooking operation can be continued by rotating the workpiece 2a.

  On the other hand, when the finger is released from the operation switch 3a from the same state, the driving of the motor is stopped.

  In the case of the conventional configuration of FIG. 10 described above, the fitting portion B on the attachment 2 (main body portion 2d) side is accurate and reliable with respect to the fitting portion A of the apparatus main body 1 as already described. And the connection engaging portion 6b of the attachment 2 (main body portion 2d) side driven shaft 20 is not securely engaged with the connection engaging portion 6a of the apparatus main body 1 side drive shaft. Due to the driving of the motor, the connecting and engaging portions 6a and 6b of each other are damaged, and the subsequent cooking work 2a cannot be driven. In some cases, it is necessary to replace the apparatus main body 1 or the attachment 2 itself. There was a big problem.

  In the case of the conventional configuration shown in FIG. 10, the fitting between the apparatus main body 1 side fitting portion A and the attachment 2 (main body portion 2d) side fitting portion B can be performed without any gap between them. It is in a relationship of being fitted in the contact state (a relationship in which the apparatus main body 1 side contact surface T1 and the attachment 2 side contact surface T2 are in contact from the beginning), and in the same contact state, the device main body 1 side drive shaft is already connected. The engaging portion 6a and the coupling engaging portion 6b of the attachment 2 side driven shaft 20 are in abutment with each other, and in this state, without any movement in the axial direction, they are simply parallel to the circumferential direction. Since the mutual helicoid pieces 7a and 7b are merely moved and engaged with each other (parallel to the rotation direction), the shaft center is displaced, or the relative rotation when the helicoid pieces 7a and 7b are engaged. Because the moving angle is too small, the mutual seam (marking part) 11a When 11b is separated, there is no gap between the contact surfaces T1 and T2 even though the coupling engagement portions 6a and 6b are not correctly engaged with each other. This is because it is easy for the user to determine that the fitting is done properly.

  However, in the case of the present embodiment, as described above, the helicoid engagement piece of the second fitting recess 2c of the attachment 2 side fitting portion B is provided as a male screw piece 9a inclined in the spiral direction. On the other hand, the outer peripheral surface of the second convex portion 1c of the fitting portion A on the apparatus main body 1 is engaged with the male screw piece 9a inclined in the same spiral direction, and the male screw piece 9a is set in the spiral direction. A male screw piece engaging groove 8c that also extends in the spiral direction is formed between the first spiral guide member 8a to be guided and the rear end portion of the first spiral guide member 8a. A second spiral guide member 8b is provided for engaging the male screw piece 9a on the inner peripheral surface of the two fitting recesses 2c in a spirally screwed state.

  Therefore, in such a configuration, in the first engagement position (first abutting engagement state in the axial direction) in which the fitting portion B of the attachment 2 is fitted to the fitting portion A of the apparatus main body 1. The lower guide surface G of the first spiral guide member 8a having a large diameter and a wide vertical direction extending in the circumferential direction is provided on the second convex portion 1c of the apparatus main body 1 side fitting portion A. The male screw piece 9a of the second fitting recess 2c of the attachment 2 is locked, and the upper end side contact surface T2 of the fitting portion B of the attachment 2 and the upper end side contact of the fitting portion A of the apparatus main body 1 are fixed. A large gap is formed between the surfaces T1 and the surface T1.

  On the other hand, when the attachment 2 is rotated rightward from this state, the male screw piece 9a is gradually moved upward by the guide surface G extending in the spiral direction on the lower side of the first spiral guide member 8a. After being guided, it eventually enters the male screw piece guide groove 8c and is engaged with the male screw piece guide groove 8c.

  In this state, the front end convex portion 9d of the convex portion 9b on the lower side of the male screw piece 9a gets over the convex portion 10 for generating the click sound and is pressed into the installation hole portion. It becomes stable in a state corresponding to the rear end convex portion 9c having a lower height than the front end convex portion 9d.

  In this state, the male screw piece 9a engages to the innermost end (right end in the figure) in the male screw piece guide groove 8c, and at the same time, the contact surfaces (mating surfaces) T1, T2 of the apparatus main body 1 and the attachment 2 described above. There is no gap between them, and the marks 11a and 11b between them correspond to the same position.

  As a result, the user can very easily recognize that the attachment 2 is properly fitted and mounted on the apparatus main body 1.

  Further, since the apparatus main body 1 and the attachment 2 (main body part 2d) are separated from each other as described above until such a complete mounting state is reached, the connection between the respective coupling engagement parts 6a and 6b. Will not be in a state of conflict. Therefore, even if the motor on the apparatus main body 1 side is erroneously driven in the middle of the engagement from the initial engagement position to the final engagement position, the respective connection engagement portions 6a and 6b are insufficient. In a proper engagement state, damage caused by excessive rotation is avoided.

  In addition, the code | symbol T3 in FIG. 3 is the level | step difference surface between the 1st convex part 1b and the 2nd convex part 1c, and the code | symbol T4 in FIG. 4 is the 1st fitting recessed part 2b and 2nd It is a level | step difference surface between the fitting recessed parts 2c.

<Embodiment 2>
FIG. 7 shows the configuration of the main part of the electric rotating device for cooking according to Embodiment 2 of the present invention.

  In the electric rotating device for cooking according to this embodiment, in the configuration of the above-described first embodiment, between the first convex portion 1b and the second convex portion 1c in the middle of the apparatus main body 1 side fitting portion A described above. On the contact surface portion of the step surface T3 (see FIG. 4) between the first fitting recess 2b and the second fitting recess 2c described above in the middle of the attachment 2 side fitting portion B. For example, a microswitch 15 as shown in FIG. 7 is provided from the bottom to the bottom, and the attachment 2 is fitted only when the above-described attachment 2 is properly fitted to the fitting portion A of the apparatus body 1. The actuating rod 15a portion of the micro switch 15 is pressed upward by the step surface T4 in the middle of the joint portion B, and the switch portion (contact portion) is turned on to enable energization of the motor. It is characterized by.

  In the case of such a configuration, for example, if the switch portion of the micro switch 15 is placed in series with the operation switch 3a of the operation switch 3 in the motor drive circuit on the apparatus main body 1 side, the micro switch 15 is Unless it is in the ON state, that is, unless the attachment 2 is properly attached to the apparatus main body 1, the motor itself cannot be driven even if the operation switch 3a is turned on.

  Therefore, it is possible to avoid damage to the coupling engaging portions 6a and 6b between the drive shaft and the driven shaft more reliably.

(Modification 1)
Moreover, the electric rotating device for cooking of this embodiment further contacts the upper end of the attachment 2 side first fitting recess 2b of the upper end of the device body 1 side fitting portion A in the configuration of the first embodiment described above. For example, a microswitch 15 similar to that shown in FIG. 7 is provided on the surface (step surface between the body portion 1a and the first convex portion 1b) T1 from the top to the bottom, and the fitting portion of the apparatus main body 1 is provided. Only when the attachment 2 described above is properly fitted and mounted on A, the contact surface T2 of the upper end of the fitting portion B of the attachment 2 presses the operating rod 15a portion of the microswitch 15 upward. The switch portion (contact portion) may be turned on to enable energization of the motor.

  Even in such a configuration, when the switch portion of the micro switch 15 is placed in series with the operation switch 3a of the operation switch 3 in the motor drive circuit on the apparatus main body 1 side, the micro switch 15 is Unless the attachment 2 is properly attached to the apparatus main body 1, the motor itself can be prevented from being driven even when the operation switch 3a is turned on unless the attachment 2 is properly attached.

(Modification 2)
The microswitch 15 described above may be configured as a reed switch (proximity switch) by providing a magnet as magnetism generating means on the attachment 2 side, for example, and various modifications are possible.

<Embodiment 3>
8 and 9 show the configuration of the main part of the electric rotating device for cooking according to Embodiment 3 of the present invention.

  The electric rotating device for cooking of this embodiment is changed to the fitting structure by the spiral guide members 8a and 8b and the guide groove 8c and the male screw piece 9a in the configuration of the first embodiment described above, and the device main body 1 As shown in FIGS. 8 and 9, for example, as shown in FIGS. 8 and 9, the fitting end portion between the attachment 2 and the attachment 2 is a concave-convex shape having an arc-shaped convex portion 20a and an arc-shaped concave portion 20b. In the case where they are not properly fitted as shown in FIG. 9, the connection engagement portion 6 a of the apparatus main body 1 side drive shaft 19 and the attachment 2 side driven shaft 20 described above are connected. It is characterized in that it is configured such that the distance from the joint portion 6b is great and does not engage with each other at all. Other configurations are the same as those of the first embodiment described above.

  In the case of such a configuration, an arcuate uneven portion that fits the abutment surface T1 at the upper end of the apparatus body 1 side fitting portion A and the abutment surface T2 portion at the upper end of the attachment 2 body side fitting portion B together. With the extremely simple and low-cost configuration of only 20a and 20b, it is possible to realize the same operation and effect as in the first embodiment.

  Further, when the apparatus main body 1 and the attachment 2 are properly mounted, there is no gap between them as shown in FIG. When not, since a large gap is formed between them as shown in FIG. 9, it can be determined at first glance that the mounting state is not appropriate.

  Therefore, it is difficult to accidentally drive the motor itself.

  DESCRIPTION OF SYMBOLS 1 is an apparatus main body, 1a is a trunk | drum, 1b is a 1st convex part, 1c is a 2nd convex part, 2 is an attachment, 2a is a work for cooking, 2b is a 1st fitting recessed part, 2c is 2nd Fitting recess, 2d is an attachment body, 3 is an operation switch, 3a is an operation switch, 3b is a lock release switch, 6a is a drive shaft side coupling engagement portion, 6b is a driven shaft side coupling engagement portion, and 8 is a large Diameter guide member, 8a is a first spiral guide member, 8b is a second spiral guide member, 8c is a spiral guide groove, 15 is a microswitch, 15a is an operating rod, and 20 is a driven shaft. , 20a are arc-shaped convex portions, 20b are arc-shaped concave portions, and T1 and T2 are contact surfaces.

Claims (3)

  An apparatus main body having a motor and a drive shaft rotated by the motor, and an exchangeable apparatus having various cooking workpieces that are detachably mounted on the drive shaft portion of the apparatus main body and driven to rotate in the mounted state. An electric rotating device for cooking comprising an attachment, wherein the driven shaft on the attachment side is not driven when the attachment is not properly attached to the drive shaft portion of the device body. An electric rotating device for cooking.   An apparatus main body provided with a motor and a drive shaft rotated by the motor, and various cooking workpieces that are detachably helicoidally engaged with the drive shaft portion of the apparatus main body and are rotationally driven in the helicoid engagement state. An electric rotating device for cooking comprising a replaceable attachment, and when the attachment is not properly attached to the drive shaft portion of the device main body, the helicoid engagement between the device main body and the attachment An electric rotating device for cooking, wherein a large gap of a predetermined dimension or more is formed in a portion.   An apparatus main body provided with a motor and a drive shaft rotated by the motor, and various cooking workpieces that are detachably helicoidally engaged with the drive shaft portion of the apparatus main body and are rotationally driven in the helicoid engagement state. An electric rotating device for cooking comprising a replaceable attachment, and when the attachment is helicoidally engaged with the drive shaft portion of the device main body, the gap between the attachment and the device main body is initially engaged. An electric rotating device for cooking, wherein the electric rotating device is configured to gradually decrease from a position toward a final engagement position.

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