JP2012045290A - Automatic bread maker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic bread maker by which bread can be safely made using grain particles as the starting raw material.SOLUTION: The automatic bread maker 1 includes: a bread container 80 to which a bread raw material is charged; a body part 10 provided with a baking chamber 30 which houses the bread container 80; crushing blades (not illustrated) which crush grain particles in the container 80 housed in the baking chamber 30; a drive means (not illustrated) which drives the crushing blades; a lid part 40 which opens/closes the baking chamber 30; a lid open/close detection means 17 which detects an open/close state of the lid part 40; and a control means which controls the operation of the drive means. The control means prohibits driving of the drive means when the lid part 40 is detected to be in the open state by the lid open/close detection means 17.

Description

  The present invention relates to an automatic bread maker mainly used in general households.

  In a conventional commercially available automatic bread maker for home use, bread is manufactured by the following procedure (for example, see Patent Document 1). First, a bread container containing bread ingredients is placed in a baking chamber in the main body, and the bread ingredients in the bread container are kneaded with a kneading blade and kneaded into a dough (kneading step). Thereafter, the obtained dough is fermented in a bread container (fermentation process), and the bread container is used as it is as a baking mold (baking process).

  When bread is produced using such an automatic bread maker, flour such as wheat or rice (wheat flour, rice flour, etc.) or mixed flour in which various auxiliary ingredients are mixed with such flour. It was common to produce bread by obtaining and using this as a bread-making material.

  However, in general households, as represented by rice grains, grains are sometimes held in the form of grains, not in the form of flour. For this reason, it would be very convenient if bread could be produced directly from grain using an automatic bread maker. For these reasons, the present applicants have developed a method for producing bread using cereal grains as a starting material (see Patent Document 2).

  In this bread manufacturing method, first, cereal grains are mixed with a liquid, and a pulverizing blade is rotated in the mixture to pulverize the cereal grains (grinding step). And the bread raw material containing the paste-form pulverized powder obtained through the crushing process is kneaded into dough with a kneading blade (kneading process), and the dough is fermented (fermentation process), and then baked into bread (baking process).

JP 2000-116526 A JP 2010-35476 A

  The present applicants have developed an automatic bread maker having a new mechanism capable of automatically executing the above-described bread manufacturing method so that bread can be baked using grain grains as a starting material at home. As an automatic bread maker equipped with this new mechanism, we are considering pulverizing grains in a bread container while the bread container used as a baking mold is stored in the baking chamber. In order to efficiently grind the grains mixed with the liquid to a desired particle size, it is considered to mount a motor that rotates the grinding blade at a high speed (for example, 7000 to 8000 rpm) on the automatic bread maker.

  In such a configuration, if the lid of the automatic bread maker is opened while the grinding blade is rotating at high speed, there is a possibility that the user may be in danger, for example, the bread ingredients in the bread container are scattered. is there.

  Therefore, an object of the present invention is to provide an automatic bread maker that can safely produce bread using cereal grains as a starting material.

  In order to achieve the above object, an automatic bread maker according to the present invention includes a bread container into which bread ingredients are charged, a main body provided with a baking chamber for storing the bread container, and the bread stored in the baking chamber. A pulverizing blade for pulverizing grain grains in a container, a driving means for driving the pulverizing blade, a lid portion for opening and closing the baking chamber, a lid opening / closing detection means for detecting an open / closed state of the lid portion, and the driving means An automatic bread maker comprising: control means for controlling the driving of the driving means; when the control means detects that the lid portion is open by the lid opening / closing detection means, the driving means drives the driving means. It is characterized by prohibiting.

  According to this configuration, the crushing blade is not driven when the lid is open. For this reason, in the automatic bread maker of this configuration, for example, the contents in the bread container are scattered out of the bread container due to the high speed rotation of the grinding blade, or the user is injured by the rotating body. Can be prevented. That is, according to the automatic bread maker of this configuration, the user can safely manufacture bread using cereal grains as a starting material.

  In the automatic bread maker configured as described above, the lid open / close detection means may detect the open / closed state of the lid without contacting the lid. Such a configuration can be realized by using, for example, a magnetic sensor or an optical sensor. And according to this structure, compared with the case where the mechanical detection means (a micro switch etc. is mentioned as a specific example) which detects opening and closing of a cover part by contact with a cover part, for example, the structure is simplified. easy.

  In the automatic bread maker configured as described above, the lid opening / closing detection means may be a magnetic sensor used in a pair with a magnet. According to this configuration, the lid opening / closing detection means can be provided with a simple configuration and inexpensively.

  In the automatic bread maker configured as described above, it is preferable that the magnetic sensor is provided in the main body portion and the magnet is provided in the lid portion. Usually, a control device for controlling the operation of the automatic bread maker is arranged on the main body side. For this reason, it is easy to simplify the configuration of the automatic bread maker by arranging the magnetic sensor on the main body side as in this configuration.

  In the automatic bread maker configured as described above, the lid portion rotates from the front side to the back side of the main body portion to open the opening of the baking chamber, and from the back side to the front side of the main body portion. It is provided that the opening of the baking chamber is closed by rotating, and the lid opening / closing detection means is provided closer to the back surface.

  As the lid opening / closing detection means for detecting the opening / closing state of the lid, it can be assumed that a mechanical sensor such as a microswitch, a magnetic sensor, an optical sensor, or the like is used. When such a sensor is arranged on the front side, the sensor may easily malfunction due to a user operation. In this respect, according to this configuration, the lid open / close detection means for detecting the open / closed state of the lid portion is provided on the back side of the automatic bread maker, so that it is difficult to cause the above-described malfunction.

  ADVANTAGE OF THE INVENTION According to this invention, the automatic bread maker which can manufacture bread safely from a grain grain as a starting material can be provided. For this reason, according to the present invention, it is expected that home bread making will become popular by making home bread production more familiar.

The schematic perspective view which shows the external appearance structure of the automatic bread maker of this embodiment The schematic diagram for demonstrating the structure inside the main body of the automatic bread maker of this embodiment. The figure for demonstrating the clutch contained in the 1st power transmission part with which the automatic bread maker of this embodiment is provided. The figure which shows typically the structure of the baking chamber in which the bread container was accommodated, and its periphery in the automatic bread maker of this embodiment. The schematic perspective view which shows the structure of the blade unit with which the automatic bread maker of this embodiment is provided. Schematic exploded perspective view showing a configuration of a blade unit provided in the automatic bread maker of the present embodiment The schematic side view and schematic sectional drawing which show the structure of the blade unit with which the automatic bread maker of this embodiment is provided. Schematic plan view when the blade unit provided in the automatic bread maker of the present embodiment is viewed from below (a diagram when the guard is removed) It is a figure for demonstrating operation | movement of the blade unit with which the automatic bread maker of this embodiment is provided, and a figure at the time of seeing a bread container from the top The figure for demonstrating the structure of the lid | cover opening / closing detection sensor with which the automatic bread maker of this embodiment is provided. The block diagram which shows the structure of the automatic bread maker of this embodiment The schematic diagram which shows the flow of the bread-making course for rice grains performed with the automatic bread maker of this embodiment

Hereinafter, embodiments of an automatic bread maker of the present invention will be described in detail with reference to the drawings. In addition, the specific time, temperature, etc. which appear in this specification are illustrations to the last, and do not limit the content of this invention.
(Configuration of automatic bread maker)
FIG. 1 is a schematic perspective view showing an external configuration of the automatic bread maker according to the present embodiment. As shown in FIG. 1, the main body (main body portion) 10 of the automatic bread maker 1 has an upper surface on which an operation unit 20 is provided. The outer shell of the main body 10 is formed of, for example, metal or synthetic resin. The operation unit 20 includes a start key, a cancel key, a timer key, a reservation key, a bread manufacturing course (a course for manufacturing bread using rice grains as a starting material, a course for manufacturing bread using rice flour as a starting material, flour The operation key group such as a selection key for selecting a course for producing bread using the starting material) and a display unit for displaying time, contents set by the operation key group, errors, and the like. The display unit is configured by, for example, a liquid crystal display panel.

  The main body 10 is provided with a baking chamber 30 in which a bread container 80, which will be described in detail later, is accommodated. The firing chamber 30 is configured in a substantially rectangular box shape having a bottom shape 30a made of, for example, sheet metal and four side walls 30b (see also FIG. 4 described later), and the upper surface thereof is open. One end of the baking chamber 30 is pivotally supported on the back side of the main body 10 and is displaced between a closed position covering the opening of the baking chamber 30 and an open position rotated by a predetermined angle from the closed position. The lid (lid portion) 40 can be opened and closed. In other words, the lid 40 rotates from the front (front) side to the back side of the main body 10 to open the opening of the baking chamber 30 and rotates from the back side to the front (front) side of the main body 10. Is provided so as to close the opening of the baking chamber 30. FIG. 1 shows a state where the lid 40 is opened.

  The lid 40 is provided with a viewing window 41 made of, for example, heat-resistant glass so that the inside of the baking chamber 30 can be seen. In addition, a bread ingredient storage container 42 is attached to the lid 40 so that a part of the bread ingredients can be automatically charged during the bread manufacturing process. The bread raw material storage container 42 includes a box-shaped container body 42a having a substantially rectangular plane shape, and a container lid 42b that is provided so as to be rotatable with respect to the container body 42a and opens and closes the opening of the container body 42a. . The bread ingredient storage container 42 is provided so that the container lid 42b can be supported from the outer surface (lower surface) side and the opening of the container body 42a can be kept closed, and the container lid 42 can be moved by an external force. The movable hook 42c provided so that engagement with 42b may be cancelled | released is also provided.

  An automatic closing solenoid (not shown) is provided in the main body 10 on the lower side of the operation unit 20, and when this solenoid is driven, the plunger protrudes from the opening 10 b provided in the main body wall surface 10 a adjacent to the lid 40. It is like that. Then, the movable hook 42c is moved by a movable member (not shown) movable by the protruding plunger, the engagement between the container lid 42b and the movable hook 42c is released, the container lid 42b is rotated, and the container main body 42a. Is configured to be in an open state. Note that FIG. 1 shows a state where the opening of the container main body 42a is opened.

  The container main body 42a and the container lid 42b are preferably provided with a metal such as aluminum so that powder bread raw materials (for example, gluten, dry yeast, etc.) stored in the container do not easily remain in the container. And it is preferable that those inner surfaces are covered with a coating layer of silicon, fluorine, or the like, and it is preferable that the inner surface be formed smoothly without any unevenness.

  Moreover, when the steam etc. which generate | occur | produce when grind | pulverizing a rice grain (an example of a grain grain) enter in the container main body 42a, a bread raw material tends to adhere to a container inner surface and is unpreferable. For this purpose, a flange (flange) is provided at the opening side edge of the container main body 42a so that the aforementioned steam or the like does not enter the container, and a packing is provided between the flange and the container lid 42b. (Seal member) 42d is interposed.

  FIG. 2 is a schematic diagram for explaining the internal configuration of the main body of the automatic bread maker according to the present embodiment. FIG. 2 assumes a case where the automatic bread maker 1 is viewed from above, and the lower side of the figure is the front side of the automatic bread maker 1 and the upper side of the figure is the back side. As shown in FIG. 2, in the automatic bread maker 1, a low-speed / high-torque type kneading motor 50 used in the kneading process is fixedly disposed on the right side of the baking chamber 30, and the grinding process is performed behind the baking chamber 30. The high-speed rotation type crushing motor 60 used in the above is fixedly arranged. The kneading motor 50 and the crushing motor 60 are both shafts. The crushing motor 60 is an embodiment of drive means for driving the crushing blade of the present invention.

  A first pulley 52 is fixed to an output shaft 51 protruding from the upper surface of the kneading motor 50. The first pulley 52 is formed by the first belt 53 so that the diameter thereof is larger than that of the first pulley 52, and the second pulley 55 is fixed to the upper side of the first rotating shaft 54. It is connected. A second rotating shaft 57 is provided on the lower side of the first rotating shaft 54 so that the center of rotation thereof is substantially the same as the first rotating shaft 54. The first rotating shaft 54 and the second rotating shaft 57 are rotatably supported inside the main body 10. A clutch 56 is provided between the first rotating shaft 54 and the second rotating shaft 57 to perform power transmission and power interruption. The configuration of the clutch 56 will be described later.

  A third pulley 58 is fixed to the lower side of the second rotating shaft 57. The third pulley 58 is provided on the lower side of the firing chamber 30 by the second belt 59 and is fixed to the driving shaft 11. The first driving shaft pulley 12 (having substantially the same diameter as that of the third pulley 58). Connected). The kneading motor 50 itself is a low speed / high torque type, and the rotation of the first pulley 52 is decelerated and rotated by the second pulley 55 (for example, decelerated to 1/5 speed). For this reason, when the kneading motor 50 is driven in a state where the clutch 56 transmits power, the driving shaft 11 rotates at a low speed.

  The first pulley 52, the first belt 53, the first rotating shaft 54, the second pulley 55, the clutch 56, the second rotating shaft 57, the third pulley 58, the second belt 59, and Hereinafter, the power transmission unit configured by the first driving shaft pulley 12 may be expressed as a first power transmission unit.

  A fourth pulley 62 is fixed to the output shaft 61 protruding from the lower surface of the grinding motor 60. The fourth pulley 62 is coupled to a second driving shaft pulley 13 (fixed below the first driving shaft pulley 12) fixed to the driving shaft 11 by a third belt 63. ing. The second driving shaft pulley 13 has substantially the same diameter as the fourth pulley 62. As the crushing motor 60, a high-speed rotating one is selected, and the rotation of the fourth pulley 62 is maintained at substantially the same speed in the second driving shaft pulley 13. Therefore, when the crushing motor 60 is driven, the driving shaft 11 is driven. Performs high-speed rotation (for example, 7000 to 8000 rpm).

  In addition, the power transmission part comprised by the 4th pulley 62, the 3rd belt 63, and the 2nd pulley 13 for driving shafts may be expressed as a 2nd power transmission part below. The second power transmission unit is configured not to have a clutch, and connects the output shaft 61 of the crushing motor 60 and the driving shaft 11 so that power can be transmitted at all times.

  FIG. 3 is a view for explaining a clutch included in the first power transmission unit provided in the automatic bread maker of the present embodiment. FIG. 3 is a diagram assuming the case of viewing along the direction of arrow X in FIG. 3A shows a state in which the clutch 56 performs power cut-off, and FIG. 3B shows a state in which the clutch 56 performs power transmission.

  As shown in FIG. 3, the clutch 56 includes a first clutch member 561 and a second clutch member 562. Then, when the claw 561a provided on the first clutch member 561 and the claw 562a provided on the second clutch member 562 are engaged with each other (the state shown in FIG. 3B), the power is transmitted to the two claws 561a, When 562b does not mesh (the state shown in FIG. 3A), the power is cut off. That is, the clutch 56 is a meshing clutch.

  In the present embodiment, each of the two clutch members 561 and 562 has a circumferential direction (when the first clutch member 561 is seen in plan view from below, or the second clutch member 562 is seen in plan view from above. Assuming the case), six claws 561a and 562a arranged at almost equal intervals are provided, but the number of the claws may be appropriately changed. Moreover, what is necessary is just to select a preferable shape suitably for the shape of nail | claw 561a and 562a.

  The first clutch member 561 is slidable in the axial direction (vertical direction in FIG. 3) on the first rotating shaft 54 and is attached to the first rotating shaft 54 so as not to be relatively rotatable. ing. A spring 71 is loosely fitted on the upper side of the first clutch member 561 of the first rotating shaft 54. The spring 71 is disposed so as to be sandwiched between a stopper portion 54a provided on the first rotating shaft 54 and the first clutch member 561, and biases the first clutch member 561 downward. ing. On the other hand, the second clutch member 562 is fixed to the upper end of the second rotating shaft 57.

  Switching of the clutch 56 (switching between the power transmission state and the power cut-off state) is performed by a self-holding solenoid (clutch) in which the arm portion 72 extending in a fixed state from the first clutch member 561 and a permanent magnet 73a is incorporated. For solenoid) 73. The plunger 73 b of the solenoid 73 is in a state where its tip end portion (the lower side corresponds to FIG. 3) is fixed to an attachment portion 72 a provided on the arm portion 72. Since the arm portion 72 (including the attachment portion 72a) is made of metal, it can be attracted to the permanent magnet 73a.

  When a voltage is applied to the solenoid 73 so as to cancel the magnetic field of the permanent magnet 73a from the state of FIG. 3A, the force that attracts the arm portion 72 (more precisely, the mounting portion 72a) of the permanent magnet 73a decreases. The first clutch member 561 is pushed down by the biasing force of the spring 71. As a result, meshing between the claw 561a of the first clutch member 561 and the claw 562a of the second clutch member 562 is obtained, and the clutch 56 transmits power (the state shown in FIG. 3B). ). Since this engagement is maintained by the urging force of the spring 71, the solenoid 73 is turned off after driving to pull down the first clutch member 561. Further, in the state in which this engagement is obtained, the arm portion 72 is pulled down, so that the plunger 73b of the solenoid 73 is in a state in which the amount of protrusion from the housing 73c (the amount of protrusion downward) is increased.

  On the other hand, if a voltage in the direction of pulling up the plunger 73b (a voltage in the direction opposite to the direction canceling the magnetic field of the permanent magnet 73a) is applied to the solenoid 73 from the state of FIG. Thus, the first clutch member 561 is pulled upward together with the arm portion 72. As a result, the engagement between the claw 561a of the first clutch member 561 and the claw 562a of the second clutch member 562 is released, and the clutch 56 performs power shut-off (a state shown in FIG. 3A). ). In the state where the meshing is released, the permanent magnet 73a built in the solenoid 73 attracts the arm portion 72 (more precisely, the mounting portion 72a). For this reason, after the drive for pulling up the first clutch member 561 is performed, the disengagement state can be maintained even if the solenoid 73 is turned off, so that the solenoid 73 is turned off.

  When the grinding motor 60 is driven, if the clutch 56 is in a state where power is transmitted (the state shown in FIG. 3B), rotational power for rotating the driving shaft 11 at high speed is transmitted to the output shaft 51 of the kneading motor 50. The In this case, if the crushing motor 60 is rotated at, for example, 8000 rpm, the output shaft 51 of the kneading motor 50 is rotated at 40000 rpm depending on the radius ratio (for example, 1: 5) between the first pulley 52 and the second pulley 55. I will try to let you. In this case, since a very large load is applied to the pulverization motor 60, the pulverization motor 60 may be damaged. For this reason, when driving the grinding motor 60, it is necessary to prevent the rotational power for rotating the driving shaft 11 at high speed from being transmitted to the output shaft 51 of the kneading motor 50. The first power transmission unit includes a clutch 56 that cuts off the power.

  As described above, in the automatic bread maker 1, the second power transmission unit is not provided with a clutch, but in this case, the motor is not damaged as described above. This is because even if the kneading motor 50 is driven, the driving shaft 11 is only rotated at a low speed (for example, 180 rpm). Even if the rotational power for rotating the driving shaft 11 is transmitted to the output shaft of the grinding motor 60, the kneading motor 50 is kneaded. This is because a large load is not applied to the motor 50. And the manufacturing cost of an automatic bread maker is suppressed by setting it as the structure which does not dare provide a clutch in the 2nd power transmission part in this way. However, it goes without saying that a clutch may be provided in the second power transmission unit.

  FIG. 4 is a diagram schematically showing the configuration of the baking chamber in which the bread container is accommodated and its surroundings in the automatic bread maker of the present embodiment. FIG. 4 assumes a configuration when the automatic bread maker 1 is viewed from the front (front surface) side, and the configurations of the baking chamber 30 and the bread container 80 are generally shown in cross-sectional views. In addition, the bread container 80 used as a baking mold while the bread raw material is input can be taken in and out of the baking chamber 30.

  As shown in FIG. 4, a sheathed heater 31 (an example of a heating unit) is disposed inside the baking chamber 30 so as to surround the bread container 80 accommodated in the baking chamber 30, and the bread raw material in the bread container 80. (This expression includes bread dough).

  In addition, a bread container support portion 14 (for example, made of an aluminum alloy die-cast molded product) that supports the bread container 80 is fixed to a location corresponding to the approximate center of the bottom wall 30a of the baking chamber 30. The bread container support portion 14 is formed so as to be recessed from the bottom wall 30a of the baking chamber 30, and the recess is substantially circular when viewed from above. At the center of the bread container support portion 14, the above-described driving shaft 11 is supported so as to be substantially perpendicular to the bottom wall 30a.

  The bread container 80 is, for example, an aluminum alloy die-cast molded product (others may be made of sheet metal or the like), has a bucket-like shape, and is handed to the flange 80a provided on the side edge of the opening. A handle (not shown) is attached. The horizontal cross section of the bread container 80 is a rectangle with rounded corners. Further, a concave portion 81 having a substantially circular shape in a plan view is formed on the bottom of the bread container 80 so as to accommodate a part of a blade unit 90 which will be described in detail later.

  At the center of the bottom of the bread container 80, a blade rotation shaft 82 extending in the vertical direction is rotatably supported in a state where a countermeasure against sealing is taken. A container-side coupling member 82a is fixed to the lower end of the blade rotation shaft 82 (projecting from the bottom of the bread container 80). Further, a cylindrical pedestal 83 is provided on the bottom outer surface side of the bread container 80 so as to surround the container-side coupling member 82a, and the bread container 80 is received by the bread container support 14 in the bread container 80. In this state, it is accommodated in the baking chamber 30. The pedestal 83 may be formed separately from the bread container 80 or may be formed integrally with the bread container 80.

  Protrusions (not shown) are formed on the inner peripheral surface of the bread container support 14 and the outer peripheral surface of the pedestal 83, respectively, and these protrusions constitute a known bayonet connection. That is, when the bread container 80 is attached to the bread container support part 14, the bread container 80 is lowered so that the protrusion of the base 83 does not interfere with the protrusion of the bread container support part 14. Then, after the pedestal 83 is fitted into the bread container support 14, when the bread container 80 is twisted horizontally, the protrusion of the pedestal 83 is engaged with the lower surface of the protrusion of the bread container support 14. Thereby, the bread container 80 cannot be pulled out upward.

  By this operation, the connection (coupling) between the container side coupling member 82a provided at the lower end of the blade rotating shaft 82 and the driving shaft side coupling member 11a fixed to the upper end of the driving shaft 11 is also performed simultaneously. Achieved. By this coupling, the blade rotating shaft 82 can transmit rotational power from the driving shaft 11.

  A blade unit 90 is detachably attached to a portion of the blade rotation shaft 82 that protrudes into the bread container 80 from above. The configuration of the blade unit 90 will be described with reference to FIGS. FIG. 5 is a schematic perspective view showing the configuration of the blade unit provided in the automatic bread maker of the present embodiment. FIG. 6 is a schematic exploded perspective view showing a configuration of a blade unit provided in the automatic bread maker of the present embodiment. FIG. 7 is a diagram showing a configuration of a blade unit included in the automatic bread maker of the present embodiment, FIG. 7 (a) is a schematic side view, and FIG. 7 (b) is the AA position in FIG. 7 (a). It is sectional drawing. FIG. 8 is a schematic plan view of the blade unit included in the automatic bread maker according to the present embodiment when viewed from below. FIG. 8A is a diagram when the kneading blade is in a folded position, and FIG. FIG. 4 is a view when the kneading blade is in an open posture. FIG. 8 shows a state in which a guard to be described later is removed. FIG. 9 is a view for explaining the operation of the blade unit provided in the automatic bread maker of the present embodiment, and is a view when the bread container is viewed from above. FIG. 9A is a view when the kneading blade is in the folded position, and FIG. 9B is a view when the kneading blade is in the open position.

  The blade unit 90 is roughly attached to the unit shaft 91, the crushing blade 92 that is relatively non-rotatable and detachably attached to the unit shaft 91, and the unit shaft 91 that is relatively rotatable and covers the crushing blade 92. And a dome-shaped cover 93 having a substantially circular shape in a plan view (see, for example, FIGS. 5 to 7). In a state where the blade unit 90 is attached to the blade rotation shaft 82, the crushing blade 92 is positioned slightly above the bottom surface of the recess 81 of the bread container 80. Further, almost the entire grinding blade 90 and the dome-shaped cover 93 are accommodated in the recess 81.

  The unit shaft 91 is a substantially columnar member formed of a metal such as a stainless steel plate, for example, and has an opening at one end (the lower end in FIGS. 6 and 7), and the inside is hollow. Further, a groove 91a that crosses the unit shaft 91 in the diameter direction is formed on the lower side of the unit shaft 91 (see, for example, FIG. 6). When the unit shaft 91 is fitted (covered) from above the blade rotation shaft 82, a pin (not shown) penetrating the blade rotation shaft 82 horizontally engages the groove 91a, and the unit shaft 91 is attached to the blade. The rotation shaft 82 is connected so as not to be relatively rotatable.

  As shown in FIG. 7B, the upper portion of the unit shaft 91 is engaged with a convex portion 82a provided at the center of the upper surface (substantially circular) of the blade rotation shaft 82 (shown by a broken line). A concave portion 91b is formed in the central portion of the side inner surface. Accordingly, the blade unit 90 can be easily attached to the blade rotating shaft 82 in a state where the centers of the unit shaft 91 and the blade rotating shaft 82 are aligned, and unnecessary rattling or the like occurs when rotating the blade. This can be suppressed. In this embodiment, the convex portion 82a is provided on the blade rotating shaft 82 side and the concave portion 91b is provided on the unit shaft 91 side. On the contrary, the concave portion is provided on the blade rotating shaft 82 side and the unit shaft 91 side is provided. It does not matter as a structure which provides a convex part.

  The pulverizing blade 92 for pulverizing rice grains is formed of, for example, a stainless steel plate, and the shape thereof is, for example, an airplane propeller. As shown in FIG. 6, an opening 92 a having a substantially rectangular shape in plan view is formed at the center of the grinding blade 92. The crushing blade 92 is attached from the lower side of the unit shaft 91 so as to fit the unit shaft 91 into the opening 92a.

  The lower side of the unit shaft 91 has a shape that is obtained by scraping the side surface of a cylinder, and is substantially the same shape (substantially rectangular shape) as the opening 92a of the grinding blade 92 when viewed from below. Further, the size of the substantially rectangular portion (the lower side portion of the unit shaft 91) is slightly smaller than the opening 92a of the crushing blade 92. Since such a shape is adopted, the grinding blade 92 is attached to the unit shaft 91 so as not to be relatively rotatable. Since the stopper member 94 for retaining is fitted into the lower part of the unit shaft 91 from the pulverizing blade 92, the pulverizing blade 92 does not fall off the unit shaft 91.

  The dome-shaped cover 93 disposed so as to surround and cover the grinding blade 91 is made of, for example, an aluminum alloy die-cast molded product, and accommodates a bearing 95 (in this embodiment, a rolling bearing) on its inner surface side. A concave accommodating portion 931 (see FIG. 7B) is formed. In other words, in order to form the accommodating portion 931, the dome-shaped cover 93 has a configuration in which a substantially cylindrical convex portion 93a is formed at the center when viewed from the outer surface. In addition, the opening is not formed in the outer surface of the convex part 93a, The bearing 95 accommodated in the accommodating part 931 is in the state where the side surface and the upper surface were enclosed by the wall surface of the accommodating part 931.

  The inner ring 95a is attached to the unit shaft 91 so as not to rotate relative to the bearing 95 with the retaining rings 96a and 96b arranged on the upper and lower sides (the unit shaft 91 is press-fitted into a through hole inside the inner ring 95a. ing). The bearing 95 is press-fitted into the housing portion 931 so that the outer ring 95b is fixed to the side wall of the housing portion 931. The dome-shaped cover 93 is attached to the unit shaft 91 so as to be rotatable relative to the bearing 95 (the inner ring 95a rotates relative to the outer ring 95b).

  In addition, the housing portion 931 of the dome-shaped cover 93 is made of, for example, silicon or the like so that foreign matter (for example, a liquid used when pulverizing rice grains or a paste-like material obtained by pulverization) does not enter the bearing 95 from outside. A seal material 97 formed of a fluorine-based material and a metal seal cover 98 that holds the seal material 97 are press-fitted from the lower side of the bearing 95. The seal cover 98 is fixed to the dome-shaped cover 93 with a rivet 99 so that the fixing to the dome-shaped cover 93 is ensured. Although fixing with the rivet 99 may not be performed, it is preferable to configure as in the present embodiment in order to obtain reliable fixing.

  On the outer surface of the dome-shaped cover 93, a kneading blade 101 (for example, aluminum) having a planar shape “” is formed by a support shaft 100 (see FIG. 6) arranged so as to extend in a vertical direction at a location adjacent to the convex portion 93 a. (Made of die-cast alloy product) is attached. The kneading blade 101 is attached to the support shaft 100 so as not to be relatively rotatable, and moves together with the support shaft 100 attached to the dome-shaped cover 93 so as to be relatively rotatable.

  Further, in the present embodiment, a complementary kneading blade 102 (for example, made of an aluminum alloy die cast product) is fixedly disposed on the outer surface of the dome-shaped cover 93 so as to be aligned with the kneading blade 101. The complementary kneading blade 102 is not necessarily provided, but is preferably provided in order to increase the kneading efficiency in the kneading process of kneading the bread dough.

  Here, the operation of the kneading blade 101 will be described. The kneading blade 101 rotates about the axis of the support shaft 100 together with the support shaft 100, and the folding posture shown in FIGS. 5, 7, 8A and 9A, and FIGS. Two postures are taken, the open posture shown in (b). In the folded position, a protrusion 101a (see FIGS. 5 and 6) hanging from the lower edge of the kneading blade 101 abuts on the first stopper portion 93b provided on the upper surface of the dome-shaped cover 93, and the kneading blade 101 is more than that. The dome-shaped cover 93 cannot be rotated counterclockwise (assuming that it is viewed from above). In this folded position, the tip of the kneading blade 101 protrudes slightly from the dome-shaped cover 93.

  When the kneading blade 101 is rotated clockwise (assumed when viewed from above) with respect to the dome-shaped cover 93 from this posture (the state shown in FIG. 9A), the open posture shown in FIG. 9B is obtained. The tip of the kneading blade 101 protrudes greatly from the dome-shaped cover 93. The opening angle of the kneading blade 101 in this opening posture is limited by the second stopper portion 93 c (see FIG. 8) provided on the inner surface of the dome-shaped cover 93. For details, the kneading blade 101 reaches the maximum opening angle when a second engagement body 103b (fixed to the support shaft 100), which will be described later, hits the second stopper portion 93c and cannot rotate.

  When the kneading blade 101 is in the folded position, for example, as shown in FIGS. 5 and 7, the complementary kneading blade 102 is aligned with the kneading blade 101, and the kneading blade 101 is shaped like a “<”. The size becomes larger.

  Meanwhile, as shown in FIG. 6, a first engagement body 103 a constituting the cover clutch 103 is attached to the unit shaft 91 between the pulverization blade 92 and the seal cover 98. For example, a substantially rectangular opening 103aa is formed in the first engagement body 103a made of, for example, zinc die casting, and the first rectangular body 103 in the lower side of the unit shaft 91 is fitted into the opening 103aa so that the first The engaging body 103a is attached to the unit shaft 91 so as not to be relatively rotatable. The first engaging body 103a is fitted from the lower side of the unit shaft 91 prior to the crushing blade 92, and the stopper member 94 prevents the unit shaft 91 from dropping off together with the crushing blade 92. In the present embodiment, the washer 104 is arranged between the first engagement body 103a and the seal cover 93 in consideration of prevention of deterioration of the first engagement body 103a. However, the washer 104 is not necessarily provided. It does not have to be provided.

  A second engagement body 103b constituting the cover clutch 103 is attached to the lower side of the support shaft 100 to which the kneading blade 101 is attached. For example, a substantially rectangular opening 103ba is formed in the second engaging body 103b made of zinc die casting, and the second engaging member is fitted into the opening 103ba by fitting a substantially rectangular portion in plan view on the lower side of the support shaft 100. The united body 103b is attached to the support shaft 100 so as not to be relatively rotatable. In the present embodiment, the washer 105 is arranged on the upper side of the second engagement body 103b in consideration of prevention of deterioration of the second engagement body 103b. However, the washer 105 is not necessarily provided.

  The cover clutch 103 composed of the first engagement body 103a and the second engagement body 103b functions as a clutch that switches whether or not to transmit the rotational power of the blade rotation shaft 82 to the dome-shaped cover 93. In the cover clutch 103, the rotation direction of the blade rotation shaft 82 when the kneading motor 50 rotates the driving shaft 11 (this rotation direction is referred to as “forward rotation”. In this case, the blade rotation shaft 82 and the dome-shaped cover 93 are connected. Conversely, the rotation direction of the blade rotation shaft 82 when the crushing motor 60 rotates the driving shaft 11 (this rotation direction is referred to as “reverse rotation”. In FIG. 8, clockwise rotation, and FIG. 9 counterclockwise rotation). The cover clutch 103 disconnects the blade rotation shaft 82 and the dome-shaped cover 93 from each other. Hereinafter, the operation of the cover clutch 103 will be described in more detail.

  When the kneading blade 101 is in the folded position (for example, the state shown in FIGS. 8A and 9A), the engaging portion 103bb of the second engaging body 103b is engaged with the engaging portion 103ab of the first engaging body 103a (this embodiment). The angle is an angle that interferes with the rotation trajectory (there are two in the form but may be one) (see the broken line in FIG. 8A). Therefore, when the blade rotation shaft 82 rotates in the forward direction, the first engagement body 103 a and the second engagement body 103 b are engaged, and the rotational power of the blade rotation shaft 82 is transmitted to the dome-shaped cover 93.

  On the other hand, when the kneading blade 101 is in the open posture (for example, the state shown in FIGS. 8B and 9B), the engaging portion 103bb of the second engaging body 103b is the same as the engaging portion 103ab of the first engaging body 103a. The angle deviates from the rotation trajectory (see the broken line in FIG. 8B). For this reason, even if the blade rotation shaft 82 rotates, the first engagement body 103a and the second engagement body 103b are not engaged. Accordingly, the rotational power of the blade rotation shaft 82 is not transmitted to the dome-shaped cover 93.

  For example, as shown in FIGS. 5 and 6, the dome-shaped cover 93 is formed with a window 93 d that communicates the space inside the cover and the space outside the cover. The window 93d is arranged at a height equal to or higher than the grinding blade 92. In the present embodiment, a total of four windows 93d are arranged at intervals of 90 °, but other numbers and arrangement intervals can be selected.

  A total of four ribs 93e are formed on the inner surface of the dome-shaped cover 93 so as to correspond to the windows 93d. Each rib 93e extends obliquely in the radial direction from the vicinity of the center of the dome-shaped cover 93 to the outer peripheral annular wall, and the four ribs 93e form a kind of bowl shape. Moreover, each rib 93e is curving so that the side which faces the bread raw material pressed toward it may become convex.

  A detachable guard 106 is attached to the lower surface of the dome-shaped cover 93. The guard 106 covers the lower surface of the dome-shaped cover 93 and prevents the user's finger from approaching the grinding blade 92. The guard 106 is formed of, for example, an engineering plastic having heat resistance, and can be a molded product such as PPS (polyphenylene sulfide). The guard 106 need not be provided, but is preferably provided so that the user can use it with peace of mind.

  For example, as shown in FIG. 6, at the center of the guard 106, there is a ring-shaped hub 106 a through which a stopper member 94 fixed to the unit shaft 91 is passed. Further, a ring-shaped rim 106b is provided at the periphery of the guard 106. The hub 106a and the rim 106b are connected by a plurality of spokes 106c. Between the spokes 106c is an opening 106d through which the rice grains crushed by the pulverizing blade 92 are passed. The opening 106d has a size that prevents a finger from passing through.

  When the guard 106 is attached to the dome-shaped cover 93, the guard 106 comes into proximity with the crushing blade 92. The guard 106 is shaped like an outer blade of a rotary electric razor, and the grinding blade 92 is shaped like an inner blade.

  On the periphery of the rim 106b, a total of four columns 106e (not limited to this configuration) are integrally formed at intervals of 90 °. A horizontal groove 106ea having one end dead end is formed on a side surface of the pillar 106e facing the center side of the guard 106. The guard 106 is attached to the dome-shaped cover 106 by engaging with the grooves 106 ea the projections 93 f (in the embodiment, a total of eight protrusions arranged at 45 ° intervals) formed on the outer periphery of the dome-shaped cover 93. . The groove 106ea and the protrusion 93f are provided so as to constitute a bayonet connection.

  In the automatic bread maker 1, the crushing blade 92 and the kneading blade 101 are provided in one unit (blade unit 90), so that the handling is convenient. The user can easily pull out the blade unit 90 from the blade rotating shaft 82, and can easily clean the blade after the bread making operation. Further, the pulverizing blade 92 provided in the blade unit 90 is detachably attached to the unit shaft 91, and is easily mass-produced and has excellent maintainability such as blade replacement.

  In the automatic bread maker 1 of the present embodiment, since a liquid such as water is put into the bread container 80, the liquid enters the bearing 95 that allows the dome-shaped cover 93 to rotate relative to the unit shaft 91. The bearing 95 needs to be hermetically sealed. In this respect, in the automatic bread maker 1, since the bearing 95 is accommodated in the concave accommodating portion 931 provided in the dome-shaped cover 93, the sealing means (the sealing material 97 and the seal cover only on the inner surface side of the dome-shaped cover 93). 98), the bearing 95 can be sealed. For this reason, it is not necessary to provide sealing means above and below the bearing 95, and the seal structure of the bearing 95 can be downsized. For this reason, in the automatic bread maker 1, it is possible to suppress an adverse effect on the shape of the baked bread (for example, the bottom surface of the bread is greatly recessed).

  By the way, in the automatic bread maker 1 of this embodiment, when grind | pulverizing a rice grain (an example of a grain grain), it is the structure which rotates the grinding | pulverization blade 92 at high speed by the grinding | pulverization motor 60. FIG. In such a configuration, when the user opens the lid 40 of the automatic bread maker 1 while the crushing blade 92 is rotating, for example, the bread material in the bread container 80 is scattered, or the user is moved by the rotating body in the bread container 80. There is a possibility of danger to the user, such as injury of the hand. For this reason, the automatic bread maker 1 is provided with a lid opening / closing detection sensor for detecting the opening / closing state of the lid 40, and the crushing motor 60 is not driven (rotated) when the lid 40 is opened. ing. Hereinafter, the configuration of the lid opening / closing detection sensor provided in the automatic bread maker 1 will be described.

  10A and 10B are diagrams for explaining the configuration of the lid open / close detection sensor provided in the automatic bread maker of the present embodiment. FIG. 10A is a diagram of a first configuration example, and FIG. 10B is a second diagram. It is a figure of a structural example.

  First, the lid opening / closing detection sensor of the first configuration example will be described with reference to FIG. 10 (a) showing the state of the automatic bread maker 1 viewed from above. As shown in FIG. 10A, the magnetic sensor 17 is provided near the side of the main body 10 near the upper back surface on the side where the operation unit 20 is provided and in the vicinity of the side surface facing the lid 40. This magnetic sensor 17 is an embodiment of a lid opening / closing detection sensor of the present invention. Specifically, the magnetic sensor 17 is fixedly arranged inside the main body 10 and is not visible from the outside. Therefore, in FIG. 10A, the magnetic sensor 17 is indicated by a broken line.

  In addition, a permanent magnet 18 is fixedly disposed on the lid 40 so as to face the magnetic sensor 17 disposed on the main body 10 when the lid 40 is closed. For example, the permanent magnet 18 may have a configuration in which a concave portion is provided on the outer surface of the lid 40 and is fixedly arranged in the concave portion, or may be fixedly arranged inside the lid 40. In this embodiment, since the permanent magnet 18 cannot be seen when the lid 40 is viewed from above, the permanent magnet 18 is indicated by a broken line in FIG.

  In order to make the lid 40 open, the lid 40 is rotated from the closed state (here, assuming that the lower surface of the lid 40 and the main body 10 are in contact) to the back side. Then, the permanent magnet 18 moves in a direction away from the magnetic sensor 17 (see FIG. 1). For this reason, when the lid 40 is opened, the magnitude of the magnetic force detected by the magnetic sensor 17 changes. That is, the magnetic sensor 17 can detect the open / closed state of the lid 40.

  In the automatic bread maker 1 of the present embodiment, the magnetic sensor 17 functioning as a lid opening / closing detection sensor is configured to detect the opening / closing of the lid 40 in pairs with the permanent magnet 18. What is necessary is just to determine suitably the magnetic force of the permanent magnet 18 so that the magnetic sensor 17 can detect the change of the magnetic force accompanying the opening / closing operation | movement of the lid | cover 40 reliably.

  In the present embodiment, the magnetic sensor 17 and the permanent magnet 18 are positioned closer to the back surface of the automatic bread maker 1 when the lid 40 is closed. However, the present invention is not limited to this configuration. For example, in a state where the lid 40 is closed, the magnetic sensor 17 and the permanent magnet 18 may be positioned closer to the front (front side) of the automatic bread maker 1.

  As a configuration in which the magnetic sensor 17 and the permanent magnet 18 are positioned closer to the front of the automatic bread maker 1, the magnetic sensor 17 and the permanent magnet 18 arranged as shown in FIG. Such a configuration may be used, or a second configuration example shown in FIG. FIG.10 (b) has shown the state which looked at the automatic bread maker 1 from the front. In the second configuration example, the magnetic sensor 17 is provided on the back side of the front side wall of the main body 10 and at a position near the operation unit 20 in the vicinity of the contact surface that contacts the lid 40 (inside the main body). Further, the permanent magnet 18 is provided inside the lid 40 near the front surface, and is provided so as to face the magnetic sensor 17 in a state where the lid 40 is closed. Also in this case, the magnetic sensor 17 can detect a change in magnetic force accompanying the opening / closing operation of the lid 40. Also in FIG. 10B, since the magnetic sensor 17 and the permanent magnet 18 are not visible from the outside, they are indicated by broken lines.

  It is considered that the magnetic sensor 17 and the permanent magnet 18 are preferably arranged closer to the back surface of the automatic bread maker 1 as in the first configuration example. The user is usually located on the front side and operates the automatic bread maker 1. When the magnetic sensor 17 is arranged on the front side, for example, when the user has a magnetic force generation source, when the user is operating the automatic bread maker 1 or the like, contrary to the original state. This is because it is considered that the possibility of erroneous detection increases when the lid 40 is closed.

  In the first configuration example and the second configuration example shown in FIG. 10, the magnetic sensor 17 is provided on the main body 10 side and the permanent magnet 18 is provided on the lid 40 side. Or the permanent magnet 18 on the main body 18 side). However, the control device of the automatic bread maker 1 is usually arranged on the main body 10 side, and the former is less likely to be complicated in configuration.

  Moreover, in this embodiment, it was set as the structure which uses the magnetic sensor used as a pair with a magnet as a lid | cover opening / closing detection sensor which detects the opening / closing state of the lid | cover 40. As shown in FIG. However, the configuration of the lid open / close detection sensor is not limited to the configuration of the present embodiment. That is, for example, a photo sensor such as a photo interrupter (so-called transmissive type or reflective type) having a light emitting part and a light receiving part, a metal sensor (if the lid 40 is made of metal, the metal sensor can be used to A mechanical sensor such as a micro switch may be used as the lid open / close detection sensor.

  Since a magnetic sensor, an optical sensor, a metal sensor, or the like can detect the open / closed state of the lid 40 without contact with the lid 40, the configuration for detecting the open / closed state of the lid 40 can be made simpler than a mechanical sensor. Of the configurations that can detect the open / closed state of the lid 40 in a non-contact manner with the lid 40, the configuration using the magnetic sensor 17 shown in the present embodiment is preferable because it is easy to reduce the cost.

  When using a microswitch, it is usually assumed that it is arranged on the front side of the main body 10 as in the case of the magnetic sensor 17 shown in FIG. In the case of using a micro switch, it is necessary to expose a part of it to the outside in order to secure a contact portion with the lid 40, but this portion is likely to be splashed with water used as a raw material for bread (spilling water). There is a problem that it is assumed). When the micro switch is used as a lid open / close detection sensor, it is preferable to take a countermeasure against sealing because the micro switch is damaged when water is applied. In this regard, when the magnetic sensor 17 is used as in the present embodiment, the members constituting the lid opening / closing detection sensor including the magnet 18 can be configured so as not to be exposed to the outside. There is no worry.

  FIG. 11 is a block diagram showing the configuration of the automatic bread maker of the present embodiment. As shown in FIG. 11, the control operation in the automatic bread maker 1 is performed by the control device 120. The control device 120 is configured by, for example, a microcomputer including a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), and an input / output (I / O) circuit unit. . The control device 120 is preferably disposed at a position that is not easily affected by the heat of the baking chamber 30. Further, the control device 120 is provided with a time measuring function, and temporal control in the bread manufacturing process is possible.

  The control device 120 includes the above-described operation unit 20, the temperature sensor 15 that detects the temperature of the baking chamber 30, the above-described lid opening / closing detection sensor (magnetic sensor) 17, a kneading motor drive circuit 121, and a grinding motor drive circuit. 122, the heater drive circuit 123, the first solenoid drive circuit 124, and the second solenoid drive circuit 125 are electrically connected.

  The kneading motor driving circuit 121 is a circuit for controlling the driving of the kneading motor 50 under a command from the control device 120. The grinding motor drive circuit 122 is a circuit for controlling the driving of the grinding motor 60 under a command from the control device 120. The heater drive circuit 123 is a circuit for controlling the operation of the sheathed heater 31 under a command from the control device 120. The first solenoid drive circuit 124 controls the drive of the automatic charging solenoid 16 that is driven when a part of the bread ingredients is automatically charged in the course of the bread manufacturing process under the command from the control device 120. Circuit. The second solenoid drive circuit 125 is a circuit for controlling the drive of the clutch solenoid 73 (see FIG. 3) that switches the state of the clutch 56 (see FIG. 3) under a command from the control device 120.

  The control device 120 reads a program related to a bread manufacturing course (breadmaking course) stored in a ROM or the like based on an input signal from the operation unit 20, and controls each unit via each drive circuit 121 to 125. The automatic bread maker 1 executes the bread manufacturing process. Further, when the control device 120 detects that the lid 40 is opened (open state) by the lid opening / closing detection sensor 17, the rotation of the grinding motor 60 is performed if the grinding motor 60 is rotating (operating). If the crushing motor 60 is not rotating, control is performed so that the crushing motor 60 does not start rotating.

  The determination of whether the lid 40 is in an open state or a closed state can be realized, for example, by storing a threshold value related to magnetic force in advance in a ROM or the like of the control device 120. That is, when the magnetic force detected by the magnetic sensor 17 is smaller than a threshold value stored in advance, it is determined that the lid 40 is open, and when the magnetic force detected by the magnetic sensor 17 becomes equal to or greater than the threshold value. Thus, it can be determined that the lid 40 is closed.

It should be noted that how much the position of the lid 40 rotated from the state in which the lower surface of the lid 40 is in contact with the main body 10 toward the back side is defined as the state in which the lid 40 is opened is in consideration of the safety of the user. May be determined as appropriate. For example, the position at the moment when the contact between the lower surface of the lid 40 and the main body 10 is lost may be set to the open state, or the lid 40 is slightly closer to the back side than the position at the moment when the contact is lost. The rotated position may be a state where the lid 40 is opened.
(Operation of automatic bread machine)
Next, the operation of the automatic bread maker 1 when producing bread with the automatic bread maker 1 configured as described above will be described. Here, the operation of the automatic bread maker 1 will be described using the automatic bread maker 1 as an example in the case of producing bread using rice grains as starting materials.

  When using rice grains as a starting material, a bread making course for rice grains is executed. FIG. 12 is a schematic diagram showing the flow of the bread making course for rice grains executed by the automatic bread maker. As shown in FIG. 11, in the rice grain breadmaking course, the dipping process, the crushing process, the kneading (kneading) process, the fermentation process, and the baking process are sequentially performed in this order.

  In starting the rice grain breadmaking course, the user attaches the blade unit 90 to the blade rotation shaft 82 by covering the blade rotation shaft 82 of the bread container 80 with the unit shaft 91. This operation is performed with the lid 40 opened. In the automatic bread maker 1, the lid opening / closing detection sensor 17 detects the open state of the lid 40 as described above, and the driving of the crushing motor 60 is not started when the lid 40 is open (pulverization). The driving of the motor 60 is prohibited). For this reason, the crushing motor 60 does not start rotating during this operation, and the user can safely attach the blade unit 90.

  In addition, the user weighs rice grains, water, and seasonings (for example, salt, sugar, shortening, etc.) by a predetermined amount and puts them into the bread container 80. In addition, the user weighs the bread ingredients that are automatically added during the bread manufacturing process and puts them in the container body 42 a of the bread ingredient storage container 42. And if the bread raw material which should be accommodated is accommodated in the container main body 42a, it will be set as the state by which the opening of the container main body 42a was closed by the container lid 42b by supporting the container lid 42a with the movable hook 42c.

  In addition, as a bread raw material accommodated in the bread raw material storage container 42, gluten, dry yeast, etc. are mentioned, for example. However, instead of gluten, for example, at least one of wheat flour, thickener (eg, guar gum), and top fresh powder may be stored in the bread ingredient storage container 42. Further, for example, only dry yeast may be stored in the bread raw material storage container 42 without using gluten, wheat flour, thickener, super fresh powder or the like. Furthermore, depending on the case, seasonings such as salt, sugar and shortening may be stored in the bread ingredient storage container 42 together with gluten and dry yeast, for example, so as to be automatically introduced during the bread manufacturing process. In this case, the bread raw material previously put into the bread container 80 is rice grains and water (in place of mere water, for example, a liquid having a taste component such as soup stock, a liquid containing fruit juice or alcohol, etc.) Become.

  Thereafter, the user puts the bread container 80 into the baking chamber 30 and further attaches the bread ingredient storage container 42 to a predetermined position of the lid 40. Then, the user closes the lid 40, selects the rice grain breadmaking course using the operation unit 20, and presses the start key. Thereby, the bread making course for rice grain which manufactures bread using the rice grain as a starting material by the control apparatus 120 is started.

  When the rice grain breadmaking course is started, the dipping process is started by a command from the control device 120. In the dipping process, the bread raw material charged in advance into the bread container 80 is left in a stationary state, and this stationary state is maintained for a predetermined time (in this embodiment, 50 minutes). This dipping process is a process aimed at making the rice grains easy to be pulverized to the core in the subsequent pulverization process by adding water to the rice grains.

  The water absorption speed of rice grains varies depending on the temperature of the water. If the water temperature is high, the water absorption speed increases, and if the water temperature is low, the water absorption speed decreases. For this reason, you may make it fluctuate the time of an immersion process with the environmental temperature etc. in which the automatic bread maker 1 is used, for example. Thereby, the dispersion | variation in the water absorption degree of a rice grain can be suppressed. Moreover, in order to make immersion time short, you may make it raise the temperature of the baking chamber 30 by supplying with electricity to the sheathed heater 31 at the time of an immersion process.

  In the dipping process, the pulverizing blade 92 may be rotated at the initial stage, and thereafter the pulverizing blade 92 may be intermittently rotated. In this way, the surface of the rice grain can be damaged, and the liquid absorption efficiency of the rice grain can be increased.

  When the predetermined time elapses, the dipping process is ended by a command from the control device 120, and a crushing process for crushing the rice grains is started. In this pulverization step, the pulverization blade 92 is rotated at high speed in a mixture containing rice grains and water. Specifically, the control device 120 controls the crushing motor 60 to rotate the blade rotation shaft 82 in the reverse direction so that the crushing blade 92 is rotated at a high speed in a mixture containing rice grains and water.

  When rotating the grinding blade 92 using the grinding motor 60, the control device 120 drives the clutch solenoid 73 so that the clutch 56 shuts off the power (the state shown in FIG. 3A). ). This is because, as described above, there is a possibility that the motor is damaged unless it is controlled in this way.

  When the blade rotation shaft 82 is rotated in the reverse direction to rotate the grinding blade 92, the dome-shaped cover 93 also starts to rotate following the rotation of the blade rotation shaft 82. The rotation of the cover 93 is immediately prevented. The rotation direction of the dome-shaped cover 93 accompanying the rotation of the blade rotation shaft 82 for rotating the grinding blade 92 is the counterclockwise direction in FIG. 9, and the kneading blade 101 has been folded until then (see FIG. 9A). In the case of the posture shown in FIG. 9, the resistance is changed to the open posture (posture shown in FIG. 9B) due to the resistance received from the mixture containing rice grains and water. When the kneading blade 101 is in the open position, the cover clutch 103 causes the engagement portion 103bb of the second engagement body 103b to deviate from the rotation track of the engagement portion 103ab of the first engagement body 103a (see the broken line in FIG. 8). Then, the connection between the blade rotation shaft 82 and the dome-shaped cover 93 is disconnected. At the same time, the kneading blade 101 in the open position hits the inner wall of the bread container 80 as shown in FIG.

  The pulverization of the rice grains in the pulverization step is performed in a state where water is soaked in the rice grains by the previously performed immersion step, and thus the rice grains can be easily pulverized to the core. In the present embodiment, the rotation of the pulverizing blade 92 in the pulverization step is intermittent. This intermittent rotation is performed, for example, in a cycle of rotating for 30 seconds and stopping for 5 minutes, and this cycle is repeated 10 times. In the last cycle, the stop for 5 minutes is not performed. The rotation of the crushing blade 92 may be continuous rotation, but for the purpose of, for example, preventing the temperature of the raw material in the bread container 80 from becoming too high, it is preferable to perform intermittent rotation.

  In the pulverization step, since the pulverization is performed in the dome-shaped cover 93, the possibility that the rice grains are scattered outside the bread container 80 is low. Further, the rice grains entering the dome-shaped cover 93 from the opening 106d of the guard 106 in the rotation stopped state are sheared between the stationary spoke 106c and the rotating pulverizing blade 92, so that they can be efficiently pulverized. Further, the rib 93e provided on the dome-shaped cover 93 suppresses the flow of the mixture containing rice grains and water (the flow in the same direction as the rotation of the pulverizing blade 92).

  Further, the mixture containing the pulverized rice grains and water is guided in the direction of the window 93d by the rib 93e, and is discharged out of the dome-shaped cover 93 from the window 93d. Since the rib 93e is curved so that the side facing the mixture rushing toward it is convex, the mixture hardly flows to the surface of the rib 93e and flows smoothly toward the window 93d. Further, instead of the mixture being discharged from the inside of the dome-shaped cover 93, the mixture existing in the space above the concave portion 81 enters the concave portion 81 and passes through the opening portion 106d of the guard 106 from the concave portion 81. Enter the cover 93. Since the pulverization by the pulverization blade 92 is performed while being circulated as described above, the pulverization can be performed efficiently.

  In the automatic bread maker 1, the crushing process is completed in a predetermined time (in this embodiment, 50 minutes). However, the grain size of the pulverized powder may vary depending on the hardness of the rice grains and the environmental conditions. For this reason, the end of the pulverization process may be determined based on the magnitude of the load of the pulverization motor 60 (for example, it can be determined by the control current of the motor).

  In the automatic bread maker 1, the lid open / close detection sensor 17 is provided so that the open / close state of the lid 40 can be detected, and when the lid 40 is opened during the crushing process, the crushing motor 60 is driven (rotated). ) Is stopped (the control device 120 prohibits the driving of the grinding motor 60). For this reason, the situation where a user opens a cover 40 and encounters a dangerous eye during a crushing process does not occur.

  When the pulverization process is finished, the kneading process is started by a command from the control device 120. In addition, it is necessary to perform this kneading process at the temperature (for example, around 30 degreeC) in which a yeast works actively. For this reason, you may make it start a kneading process when it becomes a predetermined temperature range.

  At the start of the kneading process, the control device 120 drives the clutch solenoid 73 so that the clutch 56 transmits power (state shown in FIG. 3B). Then, the control device 120 controls the kneading motor 50 to rotate the blade rotation shaft 82 in the forward direction. When the blade rotation shaft 82 is rotated in the forward direction, the grinding blade 92 is also rotated in the forward direction, and the bread ingredients around the grinding blade 92 flow in the forward direction. Accordingly, when the dome-shaped cover 93 moves in the forward direction (clockwise in FIG. 9), the kneading blade 101 receives resistance from the non-flowing bread ingredients and is folded from the open position (see FIG. 9B). The angle is changed to (see FIG. 9A). When the engagement portion 103bb of the second engagement body 103b is at an angle that interferes with the rotation path of the engagement portion 103ab of the first engagement body 103a (see the broken line in FIG. 8), the cover clutch 103 is connected, and the dome-shaped cover is formed. 93 enters a state of being driven in earnest by the blade rotation shaft 82. The kneading blade 101 in a folded position with the dome-shaped cover 93 rotates in the forward direction integrally with the blade rotation shaft 82.

  In order to reliably connect the cover clutch 103 described above, it is preferable that the rotation of the blade rotation shaft 82 at the initial stage of the kneading process is intermittent rotation or low speed rotation. Further, as described above, when the kneading blade 101 is in the folded position, the complementary kneading blade 102 is arranged on the extension of the kneading blade 101, so that the kneading blade 101 is enlarged and the bread material is pressed strongly. It is. For this reason, the dough can be kneaded firmly.

  The rotation of the kneading blade 101 is very slow in the initial stage of the kneading process, and is controlled by the control device 120 so that the speed is increased stepwise. In the initial stage of the kneading process in which the kneading blade 101 rotates very slowly, the control device 120 drives the automatic charging solenoid 16 so that the movable hook 42c of the bread ingredient storage container 42 supports the container lid 42b. Cancel (turn the container lid 42b). Thereby, the opening of the container main body 42a is opened, and for example, bread ingredients such as gluten and dry-ice are automatically charged into the bread container 80.

  As described above, the bread ingredient storage container 42 is devised so that the coating layer is provided inside the container body 42a and the container lid 42b to improve the slipperiness, and the uneven portion is not provided inside. ing. Furthermore, the situation where the bread raw material is caught by the packing 42d is also suppressed by the device for arranging the packing 42d. For this reason, the automatic charging is completed with almost no bread ingredients remaining in the bread ingredient storage container 42.

  In this embodiment, the bread ingredients stored in the bread ingredient storage container 42 are charged while the kneading blade 101 is rotating. However, the present invention is not limited to this, and the kneading blade 101 stops. You may throw it in However, as in this embodiment, it is preferable to add the bread ingredients while the kneading blade 101 is rotated because the bread ingredients can be uniformly dispersed.

  After the bread ingredients stored in the bread ingredient storage container 42 are put into the bread container 80, the dough (dough connected to the dough (dough) having the predetermined elasticity is obtained by the rotation of the kneading blade 101 and the complementary kneading blade 102. ) When the kneading blade 101 and the complementary kneading blade 102 shake the dough and knock it against the inner wall of the bread container 80, an element of “kneading” is added to the kneading. The dome-shaped cover 93 is also rotated by the rotation of the kneading blade 101 and the complementary kneading blade 102. When the dome-shaped cover 93 rotates, the rib 93e formed on the dome-shaped cover 93 also rotates, so that the bread ingredients in the dome-shaped cover 93 are quickly discharged from the window 93d, and the kneading blade 101 and the complementary kneading blade 102 are Assimilate into a kneaded bread lump (dough).

  In the kneading process, the guard 106 is also rotated in the forward direction together with the dome-shaped cover 93. The spoke 106c of the guard 106 has a shape in which the center side of the guard 106 precedes and the outer peripheral side of the guard 106 follows when rotating in the forward direction. For this purpose, the guard 106 rotates in the forward direction to push the bread ingredients inside and outside the dome-shaped cover 93 outward with the spokes 106c. Thereby, the ratio of the raw material used as a waste after baking bread can be reduced.

  Further, the pillar 106e of the guard 106 has a side surface 106eb (see FIG. 6) which is the front surface in the rotation direction when the guard 106 rotates in the forward direction, and is inclined upward. Bread ingredients are sprung upward on the front surface of the column 106e. For this reason, the ratio of the raw material which becomes waste after baking bread can be reduced.

  In the automatic bread maker 1, the time of the kneading process is configured to employ a predetermined time (10 minutes in the present embodiment) obtained experimentally as the time for obtaining dough having a desired elasticity. However, if the time of the kneading process is constant, the degree of bread dough may vary depending on the environmental temperature or the like. For this reason, for example, the configuration may be such that the end point of the kneading process is determined by using the magnitude of the load of the kneading motor 50 (for example, it can be determined by the control current of the motor) as an index.

  In addition, what is necessary is just to put it in the middle of this kneading process, when baking bread containing ingredients (for example, raisins, nuts, cheese, etc.).

  When the kneading process is finished, the fermentation process is started by a command from the control device 120. In this fermentation process, the control device 120 controls the sheathed heater 31 to maintain the temperature of the baking chamber 30 at a temperature at which fermentation proceeds (for example, 38 ° C.). Then, it is left for a predetermined time (in this embodiment, 60 minutes) in an environment in which fermentation proceeds.

  In some cases, during the fermentation process, the kneading blade 101 and the complementary kneading blade 102 may be rotated to perform degassing or rounding of the dough.

  When the fermentation process ends, the firing process is started by a command from the control device 120. The control device 120 controls the sheathed heater 31 to increase the temperature of the baking chamber 30 to a temperature suitable for baking (for example, 125 ° C.), and in a baking environment for a predetermined time (in this embodiment, 50 minutes). ) Control to bake bread. The end of the firing process is notified to the user by, for example, a display on the liquid crystal display panel of the operation unit 20 or a notification sound. When the user detects the completion of bread making, the user opens the lid 40 and takes out the bread container 80 to complete the bread production.

In addition, although the burn mark of the kneading blade 101 and the complementary kneading blade 102 (projecting upward from the concave portion 81 of the bread container 80) remains on the bottom of the pan, the dome-shaped cover 93 and the guard 106 are accommodated in the concave portion 81. So that they do not leave a large burn at the bottom of the bread.
(Other)
The embodiment of the automatic bread maker described above is an example of the present invention, and the configuration of the automatic bread maker to which the present invention is applied is not limited to the embodiment described above.

  For example, in the above description, the configuration in which the state (movement) of the lid 40 itself is detected and the open / closed state of the lid 40 is determined is shown. However, for example, when the lid 40 is configured so that the closed state can be maintained by the lock mechanism, the configuration may be such that the open / closed state of the lid 40 is detected by detecting the state of the lock mechanism. The lid opening / closing detection means of the present invention includes such a configuration.

  In the above description, only the configuration for prohibiting the driving of the grinding motor 60 for driving the grinding blade 92 when the open state of the lid 40 is detected is shown. However, the present invention is not limited to this configuration, and when the open state of the lid 40 is detected, the driving of the kneading motor 50 for driving the kneading blade may be prohibited.

  Moreover, in the above, although the case where the bread was manufactured using the rice grain as a starting material by the automatic bread maker 1 was shown, the automatic bread maker 1 manufactures bread using, for example, wheat flour or rice flour as the starting material. It is also possible. When bread is produced using wheat flour or rice flour as a starting material, the bread raw material storage container 42 can be used to contain ingredients for producing bread with ingredients such as raisins and nuts. is there. Further, in the case of producing bread using wheat flour or rice flour as a starting material, the grinding blade 92 is not necessary, so that a bread container different from the one shown above (only the kneading blade is attached to the blade rotation shaft). A conventional bread container) may be used (the bread container is properly used). The present invention can also be applied to an automatic bread maker that can only produce bread using rice grains as a starting material.

  Moreover, in embodiment shown above, the structure and operation | movement of an automatic bread maker were demonstrated to the case where the grain of rice is used for a starting material as an example. However, the automatic bread maker of the present invention can also be applied to the case where grain grains other than rice grains such as wheat, barley, straw, buckwheat, buckwheat, corn, and soybean are used as starting materials.

  Moreover, the manufacturing flow of the rice grain breadmaking course shown above is an example, and may be other manufacturing flow. For example, after the pulverization step, the pulverized powder may have a configuration in which the kneading step is performed after the immersion step is performed again in order to absorb water.

  In the embodiment shown above, the automatic bread maker 1 uses a separate motor for the case where the grain is pulverized by the pulverizing blade 92 and the case where the kneading blade 102 is rotated to knead the dough. did. However, the present invention is not limited to this configuration. That is, for example, a configuration in which only one motor is provided, and a configuration in which the same motor is used for pulverizing the grain by the pulverizing blade 92 and rotating the kneading blade 102 to knead the bread dough may be used.

  In the embodiment described above, the pulverizing blade 92 and the kneading blade 101 are mounted as a unit. However, the present invention is not limited thereto, and these blades may be separately mounted on the blade rotation shaft 82. In some cases, the pulverizing blade and the kneading blade may not be separately provided, and only one blade that exhibits the pulverizing function and the kneading function may be provided.

  The present invention is suitable for an automatic bread maker for home use.

1 Automatic bread maker 10 Main body 17 Magnetic sensor, lid open / close detection sensor (lid open / close detection means)
18 Permanent magnet 30 Firing chamber 40 Lid 60 Grinding motor (driving means)
80 Bread container 92 Grinding blade 120 Control device (control means)

Claims (5)

A bread container into which bread ingredients are charged;
A main body provided with a baking chamber for accommodating the bread container;
A crushing blade for crushing grains in the bread container accommodated in the baking chamber;
Drive means for driving the grinding blade;
A lid for opening and closing the baking chamber;
Lid opening / closing detection means for detecting the opening / closing state of the lid,
Control means for controlling the drive of the drive means;
An automatic bread maker comprising:
The automatic bread maker, wherein the control means prohibits the driving of the driving means when the lid opening / closing detecting means detects that the lid is in an open state.   2. The automatic bread maker according to claim 1, wherein the lid opening / closing detection unit detects an opening / closing state of the lid without contacting the lid. 3.   The automatic bread maker according to claim 1 or 2, wherein the lid opening / closing detection means is a magnetic sensor used in a pair with a magnet.   The automatic bread maker according to claim 3, wherein the magnetic sensor is provided in the main body, and the magnet is provided in the lid. The lid part opens from the front side to the back side of the main body part to open the firing chamber opening, and the lid part rotates from the back side to the front side of the main body part to open the firing chamber. Is provided to close
The automatic bread maker according to any one of claims 1 to 4, wherein the lid opening / closing detection means is provided near the back surface.

Images