JP2018202418A - Scraping blade - Google Patents

Abstract

To provide a scraping blade capable of suppressing a blade arm to be the starting point of corotation caused by the sticking of an object being agitated.SOLUTION: In first and second scraping blades 25, 27 attached with first and second blade parts 45, 47 for scraping at the rotary shaft 23 side of an agitation vessel 3 via first and second blade arms 33, 35,: the first and second blade arms 33, 35 are formed to be an inclined or curved shape from the rotary shaft 23 side to the side of the first and second blade parts 45, 47; an approximately right angle shoulder portion is not possessed at the rotary shaft 23 side and between the first and second blade parts 45, 47; an object being agitated does not adhere to the shoulder portion to be the starting point of corotation; and then the occurrence of the starting point of corotation can be suppressed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a scraping blade that is used in a heating and stirring device that cooks a stirring object such as a food to be cooked while stirring.

  Conventionally, a heating and stirring device having a scraping blade at a lower end portion of a stirring drive shaft suspended in a heating pot is known as Patent Document 1 or the like.

  This heating and agitating device supports a scraping blade that is in sliding contact with the inner surface of the heating pot so as to be rotatable about its axis, and this scraping blade is used to scrape and stir the object to be stirred such as food in the heating pot under heating. To do.

  This scraping blade supports a mounting bracket at the tip of a support arm (blade arm) mounted to the lower end of the stirring drive shaft, and the scraping blade is fastened and fixed to the mounting bracket by a bolt nut or the like.

  With this structure, when the stirring drive shaft rotates, the scraping blade rotates through the blade arm, scrapes and slides in the heating kettle, and stirs the object to be stirred.

  By the way, the conventional blade | wing arm becomes a shape provided with the shoulder part. The shoulder portion is formed by bending a metal bar constituting the arm so that two sides on both sides are substantially perpendicular.

  And the to-be-stirred object which was scraped off by the blade | wing part and moved to the upper direction of the scraping blade | wing moves further to the blade | wing arm side.

  Therefore, when a substantially right shoulder portion exists above the scraping blade, an object to be agitated adheres to the shoulder portion, which becomes a starting point for rotation.

  In particular, when the object to be stirred comes into contact with two sides of the metal bar that constitutes a substantially right angle on the shoulder portion and both sides thereof, due to the interaction between the force received by the metal bar and the object to be stirred that has moved continuously above the scraping blade. A surface composed of the shoulder portion of the metal bar including the scraping blades and two substantially right-angled sides on both sides thereof is formed, and the formed surface is easily supplied by receiving a larger force. In particular, an object to be stirred having a viscous or hard physical property is more likely to adhere to the shoulder.

Japanese Patent No. 4881967

  The problem to be solved by the present invention is that when a substantially right shoulder portion of the blade arm is present above the scraping blade, an object to be agitated adheres to the shoulder portion and becomes the starting point of the rotation.

  The present invention provides a scraping blade portion on the rotating shaft side of the stirring vessel via the blade arm in order to prevent the stirring target from adhering to the blade arm to become the starting point of the rotation. A scraping blade to be attached, wherein the blade arm is formed in a shape extending from the rotary shaft side to the blade portion side through an inclination or a curve, and is a starting point of rotation between the rotary shaft side and the blade portion side It is characterized by not having a substantially right shoulder.

  Since the present invention has the above-described configuration and does not have a substantially right shoulder that is the starting point of rotation between the rotating shaft side and the blade portion side, the object to be stirred is attached to the shoulder that is the starting point of rotation. And the occurrence of the starting point of the rotation can be suppressed.

It is a principal part longitudinal cross-sectional view of a heating stirring apparatus. (Example 1) It is a front view which shows attachment of the scraping blade with respect to a blade | wing arm. (Example 1) It is a top view which shows attachment of the scraping blade with respect to a blade | wing arm. (Example 1) It is a side view which shows attachment of the scraping blade with respect to a blade | wing arm. (Example 1) (A) is a front view of a blade arm, (B) is a plan view of the blade arm, and (C) is a side view of the blade arm. (Example 1) It is a principal part expanded sectional view which shows attachment of a scraping blade. (Example 1) It is a principal part expanded rear view which shows the coupling | bonding of the scraping blade | wing with respect to a blade | wing arm. (Example 1) It is the decomposition | disassembly side view which made the cross section the part which shows attachment of a scraping blade | wing. (Example 1) It is an enlarged rear view of a blade | wing attachment plate. (Example 1) It is an enlarged rear view of a stopper. (Example 1) It is a chart which shows the assembly procedure of the 1st scraping blade. (Example 1) It is related with the modification of a blade | wing arm, (A) is a front view, (B) is a top view, (C) is a side view. (Example 1) (A) is a front view which shows attachment of the scraping blade with respect to a blade | wing arm, (B) is a principal part enlarged view which shows the stopper in a blade | wing. (Example 1) (A) is a front view which shows the effect | action of the stopper in a blade | wing which performs rotation control of the scraping blade with respect to a blade | wing arm, (B) is a principal part enlarged view which shows the effect | action of a stopper in a blade | wing. (Example 1) (A) is a front view which shows attachment of the scraping blade with respect to a blade | wing arm, (B) is a principal part enlarged view which shows a blade outer stopper. (Example 1) (A) is a front view which shows the effect | action of the blade outer stopper which performs rotation control of the scraping blade with respect to a blade arm, (B) is a principal part enlarged view which shows the effect | action of a blade outer stopper. (Example 1) It is a top view which shows the modification by the coupling pin and shows the coupling | bonding by the coupling pin of the blade | wing arm with respect to the stirring drive shaft. (Example 1) It is a front view which shows the modification of a coupling pin and shows the coupling | bonding by the coupling pin of the blade | wing arm with respect to the stirring drive shaft. (Example 1) It is explanatory drawing of the coupling | bonding procedure by the coupling pin of the blade | wing arm with respect to the stirring drive shaft which shows the modification of a coupling pin. (Example 1) It is explanatory drawing of the coupling | bonding procedure by the coupling pin of the blade | wing arm with respect to the stirring drive shaft which shows the modification of a coupling pin. (Example 1) It is explanatory drawing which saw through the principal part of the heating stirring apparatus provided with the blade | wing arm which concerns on a comparative example. (Comparative example) It is explanatory drawing which shows through the principal part of the heating stirring apparatus provided with the blade | wing arm of the Example, and shows with the blade | wing arm of a comparative example. (Example 1, comparative example) It is a principal part longitudinal cross-sectional view of a heating stirring apparatus. (Example 2) It is a front view of a blade | wing arm. (Example 2) It is a front view which shows attachment of the scraping blade with respect to a blade | wing arm. (Example 2) It is a principal part longitudinal cross-sectional view of a heating stirring apparatus. Example 3 It is a front view of a blade | wing arm. Example 3 It is a front view which shows attachment of the scraping blade with respect to a blade | wing arm. Example 3 It is a principal part longitudinal cross-sectional view of a heating stirring apparatus. (Example 4) It is a front view of a blade | wing arm. (Example 4) It is a front view which shows attachment of the scraping blade with respect to a blade | wing arm. (Example 4) It is a principal part longitudinal cross-sectional view of a heating stirring apparatus. (Example 5) It is a front view of a blade | wing arm. (Example 5) It is a front view which shows attachment of the scraping blade with respect to a blade | wing arm. (Example 5) It is a principal part longitudinal cross-sectional view of a heating stirring apparatus. (Example 6) It is a front view of a blade | wing arm. (Example 6) It is a front view which shows attachment of the scraping blade with respect to a blade | wing arm. (Example 6) It is a principal part expanded sectional view which shows attachment of a scraping blade. (Reference Example 1) It is an end view of the attachment shaft portion viewed from the blade tab side. (Reference Example 1) It is the disassembled sectional view which made a part of blade part and blade attachment plate into a section. (Reference Example 2)

  The object of the present invention is to achieve the object of making it possible to suppress the starting point of rotation due to adhesion of an object to be stirred to the blade arm as follows.

[Invention of Claim 1]
The invention of claim 1 is a scraping blade that attaches a scraping blade portion to a rotating shaft side of a stirring vessel via a blade arm, and the blade arm is inclined or curved from the rotating shaft side. It is formed in the shape which reaches the said blade | wing part side, It does not have the substantially right-angled shoulder part used as the starting point of a rotation between the said rotating shaft side and the said blade | wing part side.

[Invention of claim 2]
Invention of Claim 2 is the scraping blade | wing of Claim 1, Comprising: The said blade | wing arm is inclinedly arranged linearly toward the said blade | wing part side from the said rotating shaft side, or from the said rotating shaft side The structure formed in the continuous arc shape toward the said blade | wing part side may be sufficient.

[Invention of claim 3]
A third aspect of the present invention is the scraping blade according to the first aspect, wherein the blade arm extends from the rotating shaft side toward the outer side in the rotational radial direction and changes the direction of the extending direction to the inner side. And a curved portion toward the scraping blade side.

[Invention of claim 4]
Invention of Claim 4 is the scraping blade | wing of any one of Claims 1-3, Comprising: The said blade | wing part is equipped with a pair of 1st, 2nd blade | wing parts, The said blade | wing arm is an arm. A bifurcated first and second arm extending from the base may be provided.

[Heating and stirring device]
FIG. 1 is a longitudinal sectional view of an essential part of a heating and stirring apparatus according to Embodiment 1 of the present invention.

  The heating and stirring apparatus 1 is an example of a stirring apparatus and is a vertical axis type to which the structure of the scraping blade of the present invention is applied. This heating and stirring device 1 is used for heating and stirring of a fluid to-be-stirred object, and in particular, a substance to be stirred with poor fluidity such as a powder or a solid such as a water-containing powder or an anemone, or a substance that plastically flows It is suitably used for heating and stirring. However, you may apply to the to-be-stirred thing with sufficient fluidity | liquidity.

  In addition, the heating and stirring apparatus 1 can also be applied to a horizontal axis type structure to which the structure of the scraping blade of the present invention is applied. In addition, the agitated materials are not limited to foods, but also include drugs, traditional Chinese medicines, quasi drugs, and the like. The same applies to the other embodiments.

  The heating and stirring apparatus 1 includes a heating pot 3 as a stirring container. The heating kettle 3 accommodates and heats foodstuffs such as bean paste as an object to be stirred in the embodiment.

  The heating kettle 3 is made of a material such as iron, copper, stainless steel, or a laminated steel plate of copper and stainless steel, and the bottom surface is formed into a curved surface shape or a semicircular shape. The heating pot 3 is configured to be heated by appropriate heating means such as gas, electricity, or steam supplied to the steam chamber SR covering the outer periphery of the bottom thereof.

  A driving mechanism 6 covered with a housing cover 5 is provided above the heating pot 3. The drive mechanism 6 includes a speed reducer 7 that decelerates the rotational driving force of the motor M. An endless chain 10 is hung on a chain sprocket 9 fixed to the output shaft 8 of the speed reducer 7, and the endless chain 10 is engaged with a chain sprocket 13 of the sun shaft 11.

  A sun gear 15 is fixed to the lower end portion of the sun shaft 11, and meshes with a planet gear 19 attached to the tip of the planet shaft 17.

  The planetary shaft 17 is rotatably supported by a rotating case 21 fixed to the sun shaft 11. The agitation drive shaft 23 which is a rotating shaft has the axis line aligned with the planetary shaft 17. The stirring drive shaft 23 is detachably connected by a connecting mechanism 24. The agitation drive shaft 23 is disposed so as to be inclined toward the inside of the heating pot 3 from obliquely above. Specifically, the planetary shaft 17 is disposed with a predetermined inclination angle with respect to the vertical direction. The inclination angle of the stirring drive shaft 23 is preferably inclined by 15 to 25 degrees.

  The stirring drive shaft 23 is provided with a coil spring for biasing blade tip edges 45a and 47a of first and second scraping blades 25 and 27, which will be described later, to the inner surface of the heating pot 3. The stirring drive shaft 23 is provided with a hollow shaft tube 23a that is slidably fitted by a coil spring via a bearing, a roller, or the like.

  A bifurcated connecting portion 70 is provided at the lower end of the hollow shaft tube 23a. The blade arm 29 is connected to and supported by the connecting portion 70. The connecting support of the blade arm 29 is pivotally supported with respect to the connecting portion 70 by a connecting pin 30 for supporting. With this pivot point, the blade arm 29 is swingable like a seesaw with respect to the connecting portion 70.

  The blade arm 29 is restricted from rotating about the axis of the stirring drive shaft 23. Therefore, when the stirring drive shaft 23 rotates in the direction around the axis, the blade arm 29 is configured to rotate.

[Scraping blade structure]
FIG. 2 is a front view showing attachment of the scraping blade to the blade arm. FIG. 3 is a plan view showing attachment of the scraping blade to the blade arm. FIG. 4 is a side view showing attachment of the scraping blade to the blade arm. 5A is a front view of the blade arm, FIG. 5B is a plan view of the blade arm, and FIG. 5C is a side view of the blade arm.

  As shown in FIGS. 1 to 5, the scraping blade of the embodiment of the present invention stirs and drives the first and second blade portions 45 and 47 for scraping where the blade tip edges 45 a and 47 a are in sliding contact with the stirring container 3. The first and second blade mounting plates 49 and 65 supported on the shaft 23 side are mounted by fitting a pressing pin 61 as a fitting coupling portion and a mounting hole 59 as a hole portion.

  The blade arm 29 is formed by a first arm 33 and a second arm 35 that extend from the arm base portion 31 in a bifurcated manner. The blade arm 29 has a configuration in which the first and second arms 33 and 35 form two triangular sides.

  The arm base portion 31 is provided with a pin insertion hole 31a as the attachment receiving portion side. The coupling pin 30 is inserted into the lower end portion of the hollow shaft tube 23a and the pin insertion hole 31a, and the arm base portion 31 is swingably supported by the connecting portion 70 of the hollow shaft tube 23a.

  The second arm 35 is formed longer than the first arm 33. However, the lengths of the first and second arms 33 and 35 can be set freely. The swing of the arm base portion 31 around the connecting pin 30 with respect to the connecting portion 70 of the hollow shaft tube 23a is set within a certain range.

  First and second ring-shaped portions 37 and 39 are attached to the tips of the first and second blade arms 33 and 35 as attachment receiving portions. With this configuration, the first and second ring-shaped portions 37 and 39 are provided on the stirring drive shaft 23 side, which is the rotation shaft side.

  The first and second ring-shaped portions 37 and 39 are provided with mounting holes 37a and 39a penetrating therethrough. The attachment holes 37a and 39a have key groove portions 37b and 39b as concave portions penetrating along the axial direction of the inner peripheral surface. A pair of key groove portions 37b and 39b are arranged to face each other. The direction in which the key groove portions 37b and 39b are opposed to each other is a direction that intersects the direction of gravity when the first and second blade arms 33 and 35 are attached, for example, a horizontal direction. This horizontal direction is a relative relationship with the first and second scraping blades 25 and 27 of the mounting counterpart, and may be a vertical direction.

  First and second scraping blades 25 and 27 are attached to the first and second ring-shaped portions 37 and 39 by first and second mounting brackets 41 and 43, respectively. The first and second mounting brackets 41 and 43 are made of stainless steel or the like. However, the first and second mounting brackets 41 and 43 can be formed of a metal other than stainless steel.

  The first and second scraping blades 25 and 27 include first and second blade portions 45 and 47. The second blade portion 47 is formed larger than the first blade portion 45. The first blade portion 45 is formed in a shape for scraping the bottom center side of the heating hook 3, and the second blade portion 47 is formed in a shape for scraping between the bottom outer peripheral side and the side portion of the heating pot 3. Yes.

  In addition, both the 1st, 2nd blade | wing parts 45 and 47 can also be unified into the other shape.

  The first and second blade portions 45 and 47 are made of resin such as Teflon (registered trademark), and are attached such that the blade tip edges 45 a and 47 a are in sliding contact with the inner surface of the heating pot 3. .

  Here, the blade arm of Patent Document 1 has a three-dimensionally twisted shape, and the two blade portions are opened in parallel. In such a shape, when the blade portion and the object to be stirred tend to rotate, this opening effectively acts to prevent the object to be stirred.

  On the other hand, in the embodiment of the present invention, especially by reducing the size of the first blade portion 45, the space between the two blades is widened, and the first and second surfaces on the same surface are not twisted as in the prior art. Even the two arms 33 and 35 have sufficient space to prevent the occurrence of rotation.

  The vane arm 29 has the shape of an L-shaped metal bar in which the first and second arms 33 and 35 are on the same plane. is there.

  When the first and second scraping blades 25 and 27 are attached to the blade arm 29, the configuration shown in FIGS. In particular, the first blade portion 45 has a relatively short length in the direction along the blade tip edge 45a. Even with the length of the first blade 45, the trajectory of the two first and second blades 45, 47 overlap, and the central portion of the bottom of the superheater 3 is scraped off. , Can prevent or suppress scorching.

    In addition, when the object to be stirred moves over the upper portions of the first and second blade portions 45 and 47, the horizontal portion of the blade arm interferes with the conventional structure of Patent Document 1, and it is difficult to get over, and the rotation is difficult. It was easy to get up. The structure of the embodiment of the present invention made this problem difficult to occur. This point will be further described in the operation of the heating and stirring apparatus.

(Structure of the first scraping blade)
FIG. 6 is an enlarged cross-sectional view of a main part showing attachment of scraping blades. FIG. 7 is an enlarged rear view of the main part showing the coupling of the scraping blade to the blade arm. FIG. 8 is an exploded side view, partly in section, showing attachment of scraping blades. FIG. 9 is an enlarged rear view of the blade mounting plate. FIG. 10 is an enlarged rear view of the stopper.

  The structures of the first and second scraping blades 25 and 27 are substantially the same. However, the shapes of the first and second mounting brackets 41 and 43 are slightly different depending on the size of the first and second blade portions 45 and 47. In FIG. 6, the mounting structure of the first scraping blade 25 with respect to the first blade arm 33 will be described, and the mounting structure of the second scraping blade 27 is different from the mounting structure of the first scraping blade 25. Will be described, and redundant description will be omitted.

  As shown in FIGS. 6 to 8, the first scraping blade 25 has a structure in which the first blade portion 45 is attached to the first blade attachment plate 49.

  The first blade portion 45 has a predetermined angle that is an obtuse angle forward of the first blade arm 33 in the forward rotation direction, for example, 95 degrees (5 degrees with respect to the vertical direction) to 160 degrees (70 with respect to the vertical direction). Degrees), preferably 115 degrees (25 degrees with respect to the vertical direction) to 125 degrees (35 degrees with respect to the vertical direction).

  The first blade mounting plate 49 is a constituent member of the first mounting bracket 41. The first mounting bracket 41 includes a first blade mounting plate 49, a first blade pressing plate 51, a stopper 53, and a stopper collar 55.

  The first blade attachment plate 49 constitutes a blade attachment portion, and an attachment plate portion 56 and an attachment shaft portion 57 as an attachment coupling portion are integrally formed. The attachment plate portion 56 is inclined with respect to the axis of the attachment shaft portion 57. The squeeze angle β is set by this inclination.

  As shown in FIGS. 6 to 9, the mounting plate portion 56 is formed of a rectangular plate. The upper edge portion 56 a of the attachment plate portion 56 forms a flat surface with the upper edge portion 45 b in the attachment state of the first blade portion 45. However, as long as the upper edge portions 56a and 45b have a continuous form, the upper edge portions 56a and 45b do not necessarily have to be flat, and may be formed with curved surfaces. In short, any shape can be used as long as no step is formed between the upper edge portions 56a and 45b and the remaining of food can be suppressed. Further, the upper edge portion 56a can be positioned below the upper edge portion 45b, for example, by forming it in a continuous shape curved with respect to the back surface of the first blade portion 45, or the reverse relationship. Further, there may be a form in which a step is allowed between the upper edge portions 56a and 45b.

  In this case, “upper and lower” means the upper and lower sides of the first scraping blade 25 as viewed from above and below in the direction of gravity so that the blade tip edge 45a is on the lower side. Means left and right as seen from the front with the up and down in the direction of gravity.

  The lower edge portion 56b of the mounting plate portion 56 is a slope. The inclined surface is inclined downward toward the first blade portion 45 and is continuous with the back surface of the first blade portion 45. With this slope, no residual step is formed between the lower edge portion 56b of the mounting plate portion 56 and the back surface of the first blade portion 45, so that it is possible to suppress the remaining food. However, the lower edge portion 56b may have a form having no slope.

  The attachment plate portion 56 has attachment holes 59 penetrating in the thickness direction of the plate thickness as hole portions. A pair of mounting holes 59 are symmetrically disposed on both lower sides of the mounting plate portion 56. The attachment hole 59 includes an insertion portion 59a and a fitting portion 59b. Around the outside of the fitting portion 59 b, the back surface of the mounting plate portion 56 becomes a locking edge portion that can engage the head portion 61 a of the presser pin 61.

  That is, the attachment hole 59 as the hole portion is provided on the first blade attachment plate 49 side as the blade attachment portion with a locking edge portion on the outside that can engage the head portion 61a as the engagement portion. It becomes the composition.

  The insertion portion 59a is formed in a substantially circular shape and has a size for inserting a presser pin 61 described later. The fitting portion 59b is narrower than the insertion portion 59a and is formed continuously with the insertion portion 59a. The fitting portion 59b is formed to extend upward in the direction opposite to the blade tip edge 45a. The width of the fitting portion 59b is such that the constricted portion 63 of the presser pin 61 described later is fitted to prevent the fitting portion 59b from coming off. The upper end of the fitting portion 59 b is formed in a semicircular shape according to the shaft diameter of the constricted portion 63 of the presser pin 61.

  The mounting hole 59 has a locking edge portion formed on the back surface of the first blade mounting plate 49 on the back surface side of the first blade mounting plate 49 and outside the fitting portion 59b. The locking edge portion is a form in which the head 61a of the presser pin 61 fitted to the fitting portion 59b is opposed to the locking pin 61 so that the head 61a can be engaged.

  The mounting shaft portion 57 is configured to support the stirring drive shaft 23 on the rotating shaft side together with the first ring-shaped portion 37. The attachment shaft portion 57 is inserted and fitted into the first ring-shaped portion 37 and can be relatively rotated around the shaft.

  The attachment shaft portion 57 is disposed slightly above the center between the attachment holes 59 on the back surface of the first blade attachment plate 49. The attachment shaft portion 57 is formed in a stepped shape and includes a distal end portion 57a, an intermediate portion 57b, and a base portion 57c.

  The tip portion 57a is formed in a flat plate shape. Both edge parts of the front-end | tip part 57a become the key-shaped part 57aa as a convex part. The key-like portion 57aa has a shape along the axial direction in a key shape that matches the key groove-like portion.

  The direction in which the key-like portion 57aa is opposed is, for example, the direction of gravity in the state in which the first scraping blade 25 is attached to the first blade arm 33.

  When attaching the first scraping blade 25 to the first blade arm 33, the key-like portion 57aa is fitted to the key groove-like portion 37b, and the key-like portion 57aa is fitted along the key groove-like portion 37b. Will be moved.

  Accordingly, the mounting shaft portion 57 is a key-shaped portion that is a convex portion that is movable along the key groove-shaped portion 37b while being fitted to the key groove-shaped portion 37b that is the concave portion on the axial end portion side of the outer peripheral surface. 57aa.

  Note that the key groove-shaped portion 37b and the key-shaped portion 57aa do not need to be formed symmetrically with respect to the axis, and can be formed only on one side in the radial direction, or arranged in three directions, a cross, or the like.

  The tip portion 57a is an end portion in the axial direction of the mounting shaft portion 57, but the tip portion 57a can be freely formed so as to protrude further than the key-like portion 57aa. In this sense, the key-like portion 57aa has a configuration provided on the axial end portion side of the outer peripheral surface of the mounting shaft portion 57. It is also possible to make the tip portion 57a have a circular cross section and to form a key-like portion 57aa on the outer periphery thereof.

  The intermediate portion 57b has an outer peripheral diameter that is substantially the same as the inner peripheral diameter of the mounting hole 37a, and is capable of relative rotation. The axial length of the intermediate portion 57 b is set to be substantially the same as the axial length of the ring-shaped portion 37.

  The base 57c is formed so that the outer peripheral diameter is larger than the inner peripheral diameter of the mounting hole 37a. With the base portion 57 c in contact with one end surface of the first ring-shaped portion 37, the key-shaped portion 57 aa projects from the other end surface of the first ring-shaped portion 37. When the mounting shaft portion 57 rotates relative to the first ring-shaped portion 37, the key-shaped portion 57aa faces the other end surface of the first ring-shaped portion 37 or closely engages in the axial direction.

  Using the key groove portion 37b and the key portion 57aa as an attachment / detachment mechanism portion, the attachment shaft portion 57 is inserted into the attachment hole 37a, and the attachment shaft portion 57 is attached to the attachment hole at a position where the key shape portion 57aa passes through the key groove portion 37b. The configuration is such that manual attachment and detachment is performed so as to shift the position of the key-shaped portion 57aa relative to the key groove-shaped portion 37b relative to the key groove-shaped portion 37b relative to the shaft 37a.

  That is, an attachment / detachment mechanism portion for manually attaching / detaching the attachment shaft portion 57 to / from the first ring-like portion 37 is provided between the first ring-like portion 37 as the attachment receiving portion and the attachment shaft portion 57 as the attachment coupling portion. It becomes the composition provided.

  Thus, the first blade mounting plate 49 that is the blade mounting portion is the first ring-shaped portion 37 that is the mounting receiving portion and the mounting coupling portion that supports the stirring drive shaft 23 that is the rotating shaft. This is done with the mounting shaft 57.

  The first blade portion 45 has a pair of through holes 45 c that can face the mounting holes 59. The through hole 45c is formed in a size that allows a presser pin 61 described later to be inserted therethrough. That is, the diameter of the mounting hole 59 is slightly smaller than the diameter of the insertion portion 59a. In addition, the diameter of the through-hole 45c can be formed larger than the insertion part 59a. In this case, the diameter of the base portion of the presser pin 61 fitted into the portion of the through hole 45c is enlarged according to the diameter of the through hole 45c.

  The first blade retainer plate 51 is a blade retainer member for sandwiching and attaching the first blade portion 45 to the first blade attachment plate 49 serving as the blade attachment portion.

  The first blade pressing plate 51 is formed in the same shape as the mounting plate portion 56 of the first blade mounting plate 49. The first blade portion 45 can be sandwiched between the first blade pressing plate 51 and the first blade mounting plate 49. However, the first blade pressing plate 51 and the first blade mounting plate 49 are only required to sandwich the first blade portion 45 and do not necessarily have the same shape.

  The upper edge portion 51a and the lower edge portion 51b of the first blade pressing plate 51 are inclined surfaces. The upper edge portion 51 a is inclined toward the upper edge portion 45 b of the first blade portion 45, and the lower edge portion 51 b is inclined toward the front surface of the first blade portion 45.

  The upper edge portion 51a reaches the upper edge portion 45b of the first blade portion 45 and is continuous in shape. With such a shape, no residue is formed between the upper edge portions 51a and 45b, and the residual food can be suppressed. However, there may be a form in which a step is formed between the upper edge portions 51a and 45b.

  The stepped shape between the first blade pressing plate 51 and the front surface of the first blade portion 45 is also relaxed by the inclined surface of the lower edge portion 51b, and the residual food can be suppressed. However, the lower edge portion 51b may have a form having no slope.

  In this case, the significance of the vertical and horizontal directions is as described above.

  The first blade presser plate 51 is integrally provided with a presser pin 61. A pair of presser pins 61 are provided corresponding to the through holes 45 c and the attachment holes 59. However, the presser pin 61 can be configured as a single unit.

  The presser pin 61 has a constricted portion 63 on the distal end side. The constricted portion 63 is configured by forming the head portion 61a and the base portion 61b to have the same outer diameter, and forming the shaft portion 61c between the head portion 61a and the base portion 61b to be smaller in diameter than the outer diameters of the head portion 61a and the base portion 61b. .

  The diameter of the shaft portion 61c is formed to be equal to the width of the fitting portion 59b. The outer diameters of the head 61a and the base 61b are formed to be substantially the same diameter as the through hole 45c, and the presser pin 61 can be inserted into the through hole 45c. The presser pin 61 is inserted through the through hole 45 c, and the constricted portion 63 protrudes from the first blade portion 45. Due to the protrusion of the constricted portion 63, the end surface of the base portion 61b is substantially flush with the back surface of the first blade portion 45 between the base portion 61b and the shaft portion 61c. However, the end surface of the base portion 61 b may be slightly recessed from the back surface of the first blade portion 45.

  In a state in which the constricted portion 63 protrudes from the first blade portion 45, the presser pin 61 that is a fitting coupling portion has a head portion 61a that is an engaging portion, and is provided on the first blade portion 45 side. It has a configuration.

  The presser pin 61 is inserted through the insertion hole 59a from the through hole 45c, and the first blade 45 is sandwiched between the first blade pressing plate 51 and the first blade mounting plate 49. The first blade portion 45 is relatively moved along the first blade mounting plate 49 in the direction opposite to the blade tip edge 45a, and the constricted portion 63 of the presser pin 61 is fitted to the fitting portion 59b. By this fitting, the head 61a is opposed to the locking edge on the outside of the fitting portion 59b.

  That is, the head portion 61a that is the engaging portion passes through the attachment hole 59 by the relative insertion of the presser pin 61 with respect to the attachment hole 59 that is the hole portion, and intersects the insertion direction of the presser pin 61 and the attachment hole 59. Due to the relative movement, the engaging edge of the mounting hole 59 is opposed.

  As shown in FIGS. 2 to 4, 6, 8, and 10, a stopper 53 is provided to prevent the presser pin 61 from moving toward the insertion portion 59 a. However, since the blade leading edge 45a of the first blade portion 45 is in sliding contact with the inner surface of the heating hook 3 and is prevented from moving downward, the presser pin 61 is used when the first blade portion 45 is scraped. It is possible to maintain the state in which the constricted portion 63 is fitted to the fitting portion 59b. For this reason, the stopper 53 is not essential.

  The stopper 53 is formed of a plate material having the same shape as the mounting plate portion 56 of the first blade mounting plate 49. The stopper 53 includes a base fitting hole 53a and a head fitting hole 53b.

  The diameter of the base fitting hole 53 a is formed to be substantially the same as the base 57 c of the mounting shaft 57 corresponding to the mounting shaft 57 of the first blade mounting plate 49. The base fitting hole 53 a is disposed and formed at the center of the stopper 53. The head fitting holes 53b correspond to the fitting portions 59b of the attachment holes 59 of the attachment plate portion 56, and are formed as a pair slightly below both sides of the base fitting holes 53a.

  The base fitting hole 53 a is fitted into the base 57 c, and the stopper 53 is joined to the back surface of the mounting plate portion 56. By this joining, the head fitting hole 53b is fitted to the head 61a of the presser pin 61 fitted in the fitting portion 59b, and the head 61a is locked.

  The upper edge portion 53c and the lower edge portion 53d of the stopper 53 are inclined surfaces. The slope of the lower edge portion 53 d has a shape that is substantially continuous with the slope of the lower edge portion 56 b of the mounting plate portion 56. With such a shape, no residue is formed between the lower edge portions 53d and 56b, and the residue of food can be suppressed.

  The stopper collar 55 is a member interposed between the first ring-shaped portion 37 and the stopper 53. The stopper collar 55 is cylindrical and has an inclined surface 55a at the front end.

  The inner diameter of the stopper collar 55 is formed to be substantially the same as the base portion 57 c of the mounting shaft portion 57. The stopper collar 55 is detachably fitted to the base portion 57 c of the mounting shaft portion 57. The stopper collar 55 is interposed between the first ring-shaped portion 37 and the stopper 53 while being fitted to the mounting shaft portion 57, and the inclined surface 55 a is joined to the stopper 53.

[Assembly]
FIG. 11 is a chart showing a procedure for assembling the first scraping blade 25.

  FIG. 11 shows the assembling procedure on both the side surface side and the back surface side. Reference numerals not shown in FIG. 11 refer to FIG. 6 and the like as appropriate.

  In the procedure A, the first blade part 45 and the first blade pressing plate 51 are assembled together as indicated by arrows 1 and 2.

  By this operation, the first blade pressing plate 51 is aligned with the front surface of the first blade portion 45, the pressing pin 61 is inserted into the through hole 45c as described above, and the constricted portion 63 from the back surface of the first blade portion 45. To protrude.

  Next, as shown by the arrow 3, the first blade portion 45, the first blade pressing plate 51, and the first blade mounting plate 49 are assembled with each other.

  By this operation, the front surface of the attachment plate portion 56 of the first blade attachment plate 49 is aligned with the back surface of the first blade portion 45. By this alignment, the constricted portion 63 of the presser pin 61 is inserted into the insertion portion 59 in the attachment hole 59 of the attachment plate portion 56 as described above, and the head portion 61a is projected outside the insertion portion 59 to the back surface of the attachment plate portion 56. . The first blade portion 45 is sandwiched between the first blade mounting plate 49 and the first blade pressing plate 51.

  In the procedure B, as shown by the arrow 4, the first blade portion 45, the first blade pressing plate 51 and the first blade mounting plate 49 are assembled together.

  With this operation, the first blade portion 45 extends along the first blade mounting plate 49 in a state where the first blade portion 45 is sandwiched between the first blade mounting plate 49 and the first blade pressing plate 51. As a result, the constricted portion 63 is fitted into the fitting portion 59b as described above. By this fitting, the head 61a of the presser pin 61 opposes the engaging edge on the outside of the fitting portion 59b. This opposition is maintained by the force acting on the first blade 45 when the first blade 45 is operated by driving the stirring drive shaft 23.

  That is, when the first blade portion 45 scrapes and slides on the bottom of the stirring vessel 3, the first blade portion 45 is biased toward the stirring vessel 3 by the coil spring of the stirring drive shaft 23. In this case, since the blade tip edge 45a comes into contact with the bottom of the stirring vessel 3, it receives a reaction force.

  This force prevents the first blade portion 45 from moving downward. By this movement prevention, the presser pin 61 is positioned on the fitting portion 59b, and the head 61a can be kept facing the locking edge.

  Therefore, the first blade portion 45 does not fall off during the stirring drive.

  Even when the stirring drive shaft 23 is stationary, since the first blade 45 is prevented from moving downward with respect to the bottom of the stirring container 3, the head 61a can be kept facing the locking edge in the same manner. it can.

  In this fitted state, the back surface of the first blade portion 45 and the front surface of the first blade mounting plate 49 face each other with a gap of about 0.1 mm, and the presser foot 61 on the back surface of the first blade mounting plate 49. The head 61a faces the other.

  In addition, an inclined surface can be formed on the back side of the first blade mounting plate 49, and the wedge action can be exerted so that the head 61a rides on the slope when the constricted portion 63 is fitted to the fitting portion 59b. When this action is present, the back surface of the first blade portion 45 can be brought into close contact with the front surface of the first blade mounting plate 49.

  However, the interaction between the setting of the axial length of the shaft portion 61c at the constricted portion 63 and the setting of the plate thicknesses of the first blade portion 45, the first blade mounting plate 49, and the first blade pressing plate 51 causes the first A gap of 0.55 mm on average and at least 0.2 mm can be set between each of the blade portions 45, the first blade mounting plate 49, and the first blade pressing plate 51.

  In procedure C, the stopper 53 is assembled to the mounting shaft portion 57 as indicated by an arrow d.

  By this operation, the base fitting hole 53a of the stopper 53 is fitted to the base 57c of the mounting shaft portion 57 as described above. At the same time, the head fitting hole 53b of the stopper 53 is fitted into the head 61a of the presser pin 61 fitted in the fitting portion 59b, and the head 61a is locked. In this state, the stopper 53 is joined to the back surface of the mounting plate portion 56.

  In the procedure D, the stopper collar 55 is assembled to the mounting shaft portion 57 as indicated by an arrow e.

  By this operation, the base fitting hole 53a of the stopper 53 is fitted to the base 57c of the mounting shaft 57.

  After assembling the first scraping blade 25, the attachment shaft portion 57 is inserted into the first ring-shaped portion 37 to attach the first scraping blade 25 to the first arm 33.

  In this attachment, the key-like portion 57aa of the attachment shaft portion 57 is aligned with the key groove-like portion 37b of the attachment hole 37a. In this alignment, the first scraping blade 25 is disposed so as to be rotated approximately 90 degrees from the attached state, and the key-shaped portion 57aa is opposed to the key groove-shaped portion 37b.

  Next, the attachment shaft portion 57 is inserted into the attachment hole 37a and pushed in until the key-like portion 57aa passes through the key groove-like portion 37b.

  At a position where the key-like portion 57aa passes through the key groove-like portion 37b, the attachment shaft portion 57 is rotated relative to the attachment hole 37a about the axis.

  In this embodiment, the rotational position of the first scraping blade 25 is returned almost 90 degrees.

  By returning the rotation, the position of the key-shaped portion 57aa in the rotation direction with respect to the key groove-shaped portion 37b is shifted.

  Due to this displacement, the rear end of the stopper collar 55 faces one end of the first ring-shaped portion 37, and the key-shaped portion 57 aa engages with the other end of the first ring-shaped portion 37. Between the one end of the first ring-shaped part 37 and the rear end of the stopper collar 55, the key-shaped part 57aa and the other end of the first ring-shaped part 37 are in close contact with each other or have a slight gap. Hold and oppose. By this opposition, the first scraping blade 25 is attached to the first arm 33 so as to be relatively rotatable.

  In the attached state, the key-like portion 57aa is vertically oriented and shifted by 90 degrees with respect to the horizontal key groove-like portion 37b. If the swing range of the first scraping blade 25 with respect to the first ring-shaped portion 37 is less than 90 degrees, the engagement of the key-shaped portion 57aa with the other end of the first ring-shaped portion 37 is maintained. Therefore, the first scraping blade 25 does not fall off from the first ring-shaped portion 37.

  When the first scraping blade 25 is attached to the first arm 33 such that the first scraping blade 25 cannot be rotated relative to the first arm 33, a slope that performs cam action in the rotational direction is formed on the other end surface of the first ring-shaped portion 37. The blade 25 can be fastened and fixed to the first arm 33.

  In this case, when the rotation of the first scraping blade 25 is returned, the end of the key-like portion 57aa rides on the slope of the other end surface of the first ring-like portion 37 in the rotation direction.

  It should be noted that the average between the end surface of the first ring-shaped portion 37 and the rear end of the stopper collar 55 and between the key-shaped portion 57aa and the end surface of the first ring-shaped portion 37 is 0.55 mm on average and at least 0. A gap of 2 mm or the like can also be set.

(Second scraping blade structure)
As shown in FIGS. 1 and 2, the second blade portion 47 of the second scraping blade 27 is larger than the first blade portion 45 of the first scraping blade 25 and has a different shape. . For this reason, the second blade mounting plate 65 and the second blade pressing plate 67 of the second mounting bracket 43 are set to a size and a shape corresponding to the second blade portion 47.

  The size and shape of the second blade portion 47 are set so as to scrape the bottom outer peripheral side and the side portion of the heating pot 3. The attachment plate portion 69 of the second blade attachment plate 65 is formed in a size and shape along the upper edge portion 47 b of the second blade portion 47. The mounting plate portion 69 has a size that extends to one side with respect to the mounting plate portion 56 of the first blade mounting plate 49 and is bent upward. A mounting hole 59 is additionally provided on the end side of the extended portion of the mounting plate 69.

  The second blade pressing plate 67 is formed symmetrically with respect to the mounting plate 69 with the second blade portion 47 interposed therebetween. The second blade presser plate 67 is additionally provided with a presser pin 61 in accordance with an attachment hole 59 provided additionally on the end side of the attachment plate portion 69.

  Therefore, in the second scraping blade 27, compared with the first scraping blade 25, the attachment at the attachment hole 59 and the presser pin 61 added to the second blade portion 47 is performed in the same manner as described above. It is a combination of places. In addition, the connection with the attachment hole 59 and the pressing pin 61 can be further added.

  In the second scraping blade 27, the stopper 53 and other structures, and the attachment to the second arm 35 are the same as those of the first scraping blade 25. To do.

  Therefore, the assembly of the second scraping blade 27 and the attachment to the second arm 35 can be performed in substantially the same manner as the first scraping blade 25.

[Operation of heating stirrer]
Next, the operation of the heating and stirring apparatus according to the embodiment of the present invention will be described.

  An ingredient such as sauce to be cooked (stirred object) is put into the heating kettle 3, and the heating kettle 3 is heated by heating means such as gas, electricity, electromagnetic induction, steam, etc., and driven from the drive control unit. The motor M is driven in accordance with the control signal (forward rotation command).

  By driving the motor M, the rotational driving force is transmitted to the sun shaft 11 through the speed reducer 7, the output shaft 8, the chain sprocket 9, the endless chain 10, and the chain sprocket 13.

  The driving force of the sun shaft 11 is transmitted to the sun gear 15 and the rotating case 21 of the sun shaft 11, and the planetary gear 19 and the planet shaft 17 meshed with the outer periphery of the sun gear 15 repeat revolution and rotation, while the planet shaft 17 The agitation drive shaft 23 connected to the lower end is rotated in the forward direction.

  As a result, the first and second scraping blades 25 and 27 revolve in the normal rotation direction indicated by the arrow a in FIG. The inside is moved, and the ingredients in the heating pot 3 are scraped and mixed under heating.

  During the stirring and mixing of the ingredients in the forward direction, the ingredients move while sliding upward along the first and second scraping blades 25 and 27, and the first and second scraping blades 25, Get over 27.

  At this time, in the stirring cooking apparatus of Patent Document 1, the blade arms are arranged side by side directly above the blade portion, whereas in the embodiment, the first and second arms 33 and 35 are inclined. . For this reason, in the embodiment, the food material moves while sliding upward on the first and second scraping blades 25 and 27, and smoothly moves over the first and second scraping blades 25 and 27. Can do.

  That is, in the stirring and cooking apparatus of Patent Document 1, when the food material tries to get over the scraping blade, the blade arm prevents it from getting over, whereas in the embodiment, the first and second blade portions 45 and 47 Since the space on the upper edge portions 45b and 47b is open, it is possible to prevent the food from getting over.

  For this reason, the effect of suppressing the supply of food to the first and second scraping blades 25 and 27 can also be promoted.

  Further, each of the first and second scraping blades 25 and 27 has a predetermined squeeze angle β that becomes an obtuse angle forward in the forward rotation direction as shown in FIG. The above ingredients are smoothly passed over while scooping up.

  On the other hand, when the motor M is driven in the reverse direction according to the drive control signal (reverse command) from the drive control unit, the first and second scraping blades 25 and 27 revolve in the reverse direction of the arrow b in FIG. While rotating, the inside of the heating kettle 3 is moved, and the ingredients in the heating kettle 3 are stirred and mixed under heating.

   At the time of such reversal rotation, the first and second scraping blades are moved by the reversal movement of the first and second scraping blades 25 and 27, depending on the squeeze angle β. 25, 27 tries to sink under the lower edges 45a, 47a.

  For this reason, due to the elastic contact of the first and second scraping blades 25 and 27 via the hollow shaft tube 23a, more moisture is contained on the food remaining thinly on the bottom of the heating pot 3 during the forward rotation. Ingredients are rubbed. Moisture is transferred between the food remaining by the rubbing and the rubbing food.

  When the motor M is rotated in the normal direction again, the food material rubbed at the time of reversal is scraped off together with the remaining food material therebelow, and the scorching to the heating pot 3 can be prevented.

[Effect of Example 1]
In Embodiment 1 of the present invention, with the above structure, the presser pin 61 is inserted into the through hole 45c and the insertion portion 59a, and the head 61a is inserted into the first and second blade attachment plates 49, 65 from the attachment hole 59. The first and second blade mounting portions 49 and 65 can be sandwiched between the first and second blade pressing plates 51 and 67 by projecting to the back side.

  In this state, the first and second blade portions 45 and 47 are relatively moved along the first and second blade mounting plates 49 and 65 in the direction opposite to the blade leading edges 45a and 47a, thereby constricting the presser pin 61. The part 63 can be fitted to the fitting part 59b, and the head 61a can be opposed to the engaging edge part on the outer side of the fitting part 59b.

  Therefore, a tool can be made unnecessary when the first and second scraping blades 25 and 27 are assembled. For this reason, the first and second scraping blades 25 and 27 can be easily disassembled and cleaned only by hand.

  Since the first and second scraping blades 25 and 27 can be easily disassembled and cleaned, a reduction in the number of cleanings can be suppressed, which is extremely useful as a structure for scraping blades for food materials.

  The structure for fixing the first and second blade portions 45 and 47 made of Teflon (registered trademark) to the first and second blade mounting plates 49 and 65 made of stainless steel is not a tightening structure using bolts and nuts or the like. Because of the restriction by engagement, the first and second blade mounting plates 49 and 65 are not in close contact with the first and second blade portions 45 and 47, and a gap of about 0.1 mm is generated. . This void allows the product to enter and exit during food production and provides the following favorable effects.

  Replacement of the object to be agitated between the first and second blade mounting plates 49 and 65 and the first and second blade portions 45 and 47 during and without the disassembly and cleaning, or Replacement cleaning is possible to some extent, and the frequency of disassembly cleaning can be reduced.

  In the bean paste, the bean paste adhering to the first and second blade portions 45 and 47 for a long time is thermally altered and a lump called a gully is formed, but the first and second blade portions 45 and 47 are fixed. In the structure of the example, the blade deposit is gradually replaced between the first and second blade mounting plates 49 and 65 and the first and second blade portions 45 and 47 and between the first and second blade portions 45 and 47. Will not occur.

  In the first embodiment of the present invention, with the above structure, the key groove portions 37aa are inserted into the mounting holes 37a, 39a by using the key groove portions 37b, 39b and the key portion 57aa as the attachment / detachment mechanism portion, and the key portion 57aa is the key The mounting shaft portion 57 is rotated relative to the mounting holes 37a and 39a around the shaft at a position passing through the groove portions 37b and 39b, thereby shifting the position of the key-shaped portion 57aa in the rotation direction with respect to the key groove portions 37b and 39b. Can be prevented.

  Therefore, a tool can be made unnecessary even when the first and second scraping blades 25 and 27 are attached to and removed from the blade arm 29. For this reason, the cleaning performed by removing the first and second scraping blades 25 and 27 from the blade arm 29 can be easily performed.

  From this point of view, the first and second scraping blades 25 and 27 can be easily disassembled and cleaned, the reduction in the number of cleanings can be suppressed, and this is extremely useful as a structure for scraping blades for foodstuffs.

[Variation of blade arm]
12A and 12B relate to a modification of the blade arm, in which FIG. 12A is a front view, FIG. 12B is a plan view, and FIG. 12C is a side view. The basic structure of the blade arm is the same as that shown in FIG. 5, and the corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

  In the blade arm 29A of the present modification, the arm base portion 31 is formed vertically longer than the blade arm 29 of FIG. The triangular base shape in which the first and second arms 33 and 35 and the first and second ring-shaped portions 37 and 39 at the lower ends thereof form two sides is compared with the blade arm 29 of FIG. 31 is relatively low as it becomes longer.

  The blade arm 29A in FIG. 12 is used in exchange for the blade arm 29 in FIG. 5 depending on the properties of the object to be stirred. The shape of the blade arm 29A is easy to get over the first and second blade portions 45 and 47 depending on the properties of the object to be stirred, and is effective in preventing rotation.

[Feather stopper]
13 and 14 show a modified example of attachment of the scraping blade. FIG. 13A is a front view showing attachment of the scraping blade to the blade arm, and FIG. 13B is an enlarged view of a main part showing the blade stopper. FIG. 14A is a front view showing the action of the stopper in the blade that regulates the rotation of the scraping blade with respect to the blade arm, and FIG. 14B is an enlarged view of the main part showing the action of the stopper in the blade. The basic structure of the blade arm and the scraping blade is the same as in FIG. 2 and the like, and the corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIG. 13, blade stoppers 37c and 39c are projected from the rear end surfaces of the first and second ring-shaped portions 37 and 39, respectively. In this case, the rear end face refers to the front face of the first and second scraping blades 25 and 27 in the forward rotation direction.

  When the first and second scraping blades 25 and 27 are lifted together with the stirring drive shaft 23 with respect to the heating pot 3, the first and second scraping blades 25 and 27 become the first and second ring-shaped portions. Rotate with respect to 37 and 39, and may hang downward so as to be inward of each other. During the rotation of the first and second scraping blades 25 and 27, the key-like portion 57aa comes into contact with the blade stoppers 37c and 39c. This contact prevents the first and second scraping blades 25 and 27 from rotating with respect to the first and second ring-shaped portions 37 and 39 within a certain range.

  In the form without the blade stoppers 37c and 39c, when the first and second scraping blades 25 and 27 are lifted together with the agitation drive shaft 23 with respect to the heating pot 3, the first and second scraping blades 25, 27 may rotate with respect to the first and second ring-shaped portions 37 and 39 and may be inward of each other and hang downward in the vertical direction.

  When the first and second scraping blades 25 and 27 are lowered in the situation of the first and second scraping blades 25 and 27, the leading ends of the first and second scraping blades 25 and 27 are dropped. Will collide with the heating kettle 3, making it difficult to descend.

  On the other hand, in the form in which the blade stoppers 37c and 39c are protruded, the first and second scraping blades 25 and 27 rotate with respect to the first and second ring-shaped portions 37 and 39. 14 to block within a certain range.

  When the first and second scraping blades 25 and 27 are lowered and come into contact with the heating pot 3 by blocking in a certain range, the first and second scraping blades 25 and 27 are moved to the first. The rotation can be smoothly returned to the second ring-shaped portions 37 and 39, and the lowering operation can be performed smoothly.

  FIG. 15A is a front view showing attachment of the scraping blade to the blade arm, and FIG. 15B is an enlarged view of a main part showing the blade outer stopper. FIG. 16A is a front view showing the action of the blade outer stopper that restricts the rotation of the scraping blade with respect to the blade arm, and FIG. 16B is an enlarged view of a main part showing the action of the blade outer stopper.

  As shown in FIG. 15, blade outer stoppers 37 d and 39 d are projected from the rear end surfaces of the first and second ring-shaped portions 37 and 39.

  The first and second scraping blades 25 and 27 are moved up and down by a hollow shaft tube 23a in which a coil spring is housed, and are rotated at a central joint point of the stirring blade arm 29 with respect to the stirring drive shaft 23. The ring-shaped portions 37 and 39 can be rotated at the joining points of the first and second scraping blades 25 and 27.

  For this reason, the 1st, 2nd scraping blades 25 and 27 can perform the operation | movement changed considerably with the resistance of to-be-stirred object.

  In particular, when the object to be stirred is hard, the two first and second scraping blades 25 and 27 receive a reaction force from the heating kettle 3 side, and may be in a state where they face each other as shown in FIG. is there. In particular, the longer of the two second scraping blades 27 is also offset from the rotational axis of the second ring-shaped portion 39, and floats on the long side of the second blade portion 47. It becomes easy to receive force from the heating kettle 3 side.

  As described above, when the first and second blade portions 45 and 47 receive a force, the outer ends of the first and second blade portions 45 and 47 are floated, and in extreme cases, the first and second blade portions 45 and 47 are displaced beyond the restoration limit. The second blade portions 45 and 47 may move while standing upward. In the actual test, the tips of the first and second blade portions 45 and 47 rose from the inner surface of the heating pot 3 and the situation where the rotation continued in this state occurred.

  During the rotation of the first and second scraping blades 25 and 27, the key-shaped portion 57aa comes into contact with the blade outer stoppers 37d and 39d so that the first and second scraping blades 25 and 27 are the first, The rotation with respect to the second ring-shaped portions 37 and 39 can be prevented within a certain range.

  By blocking in such a certain range, even the hard object to be stirred can be accurately heated and stirred by the first and second scraping blades 25 and 27.

  It is also possible to employ both the blade inner stoppers 37c and 39c and the blade outer stoppers 37d and 39d.

[Variation of blade coupling pin]
17 to 20 show modified examples of the coupling pin. FIG. 17 is a plan view showing the coupling of the blade arm to the stirring drive shaft by the coupling pin. FIG. 18 is a front view showing the coupling of the blade arm to the stirring drive shaft by the coupling pin. FIG. 19 is an explanatory diagram of a coupling procedure using a coupling pin of the blade arm with respect to the stirring drive shaft. FIG. 20 is an explanatory diagram of a coupling procedure using a coupling pin of the blade arm with respect to the stirring drive shaft. The basic structure of the blade arm and the like is the same as in FIG. 2 and the like, and the corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 17 to 20, the coupling pin 30 </ b> A has a coupling pin tab 71 at one end and an angle portion 73 at the other end. The coupling pin tab 71 is a name because the tab is a member of the coupling pin 30A.

  A tab mounting slit is formed at one end of the coupling pin 30A. The coupling pin tab 71 is disposed so as to fit into the slit of the coupling pin 30 </ b> A, and is rotatably supported by the tab pin 75. A long hole 71 a is formed in the coupling pin tab 71, and the long hole 71 a is fitted to the tab pin 75. The coupling pin tab 71 is formed with an arc portion 71b for allowing a rotation operation.

  Therefore, the connecting pin tab 71 is rotatable with respect to the tab pin 75 and can move linearly within the range of the long hole 71 a with respect to the tab pin 75. By the rotation and linear movement of the coupling pin tab 71, the coupling pin tab 71 can be displaced from a first position along the coupling pin 30A to a second position intersecting perpendicularly to the coupling pin 30A.

  The angle portion 73 has an angle cross section and is fixed to the other end of the coupling pin 30A. The angle portion 73 contacts the flat side surface of the bifurcated connecting portion 70 of the hollow shaft tube 23a, and the engagement surface 73a of the angle portion 73 engages with the lower edge portion 70a. The rotation of the coupling pin 30A around the axis is restricted by the contact engagement of the angle portion 73 with the connecting portion 70.

  In the connecting portion 70, a pin insertion hole 70c is formed on the arm fitting portion 70b as the rotating shaft side. The arm base portion 31 is inserted into the arm fitting portion 70b, the coupling pin 30A is inserted into the pin insertion holes 70c and 31a, and the blade arm 29 is swingably supported by the connecting portion 70 of the hollow shaft tube 23a. The swing range of the blade arm 29 can be set by the depth of the forked portion of the arm fitting portion 70b.

  When attaching the blade | wing arm 29 to the connection part 70 of the hollow shaft tube 23a lower end part, it carries out like FIG. 19, FIG.

  In the procedure 1, as shown by the arrow 1 in FIG. 19, the arm base 31 of the blade arm 29 is fitted into the bifurcated arm fitting portion 70b.

  In step 2, the coupling pin 30A having the coupling pin tab 71 in the first position is inserted into the pin insertion holes 70c and 31a as indicated by the arrow 2. By this insertion, the angle portion 73 is brought into contact with the side surface of the connecting portion 70, and the engaging surface 73a is engaged with the lower edge portion 70a.

  In procedure 3, as shown in FIG. 20, the connecting pin tab 71 is rotated around the tab pin 75 as shown by the arrow 3 so that the connecting pin tab 71 is orthogonal to the axis of the connecting pin 30A. At this time, the arc portion 71b of the coupling pin tab 71 slides with respect to the side surface of the coupling portion 70, and the coupling pin tab 71 is allowed to rotate.

  In step 4, as shown in FIG. 20, the connecting pin tab 71 is linearly moved downward along the side surface of the connecting portion 70 as shown by the arrow 4 and displaced to the second position.

  In this assembled state, the engaging surface 73a of the angle portion 73 is engaged with the lower edge portion 70a of the connecting portion 70, and locking is performed. This locking prevents the coupling pin 30A from rotating about its axis. By preventing the rotation, the second position is maintained when the coupling pin tab 71 faces downward in the gravitational direction, and the retaining of the coupling pin 30A is maintained.

  Here, in the form in which the angle portion 73 does not exist and the coupling pin 30A is rotatable about the axis, the coupling pin tab 71 may be in a state of being directed in the horizontal direction. In this state, since the coupling pin tab 71 can easily return to the first position, the lock may be released.

  On the other hand, in the present embodiment, the rotation of the coupling pin 30A around the axis is restricted as described above, and the locking of the coupling pin 30A can be maintained.

  In the case where the stirring drive shaft is a horizontal shaft type device, the angle portion 73 abuts and engages with the connecting portion 70 to maintain the direction of the coupling pin tab 71 at the second position in the centrifugal force direction. .

  If the fitting part 59b is narrower than the insertion part 59a and is formed continuously with the insertion part 59a, the fitting part 59b is not necessarily formed so as to extend upward in the direction opposite to the blade tip edge 45a. Absent. For example, a fitting portion 59b such as a horizontal direction can be extended from the insertion portion 59a.

  In this case, the blade portion is relatively moved along the mounting plate portion in the horizontal direction or the like, and the presser pin is fitted to the fitting portion. In this structure, if a positioning projection or the like is formed between the insertion portion and the fitting portion, and the presser pin moves over the projection when moving relatively from the insertion portion to the fitting portion, The pin can be positioned in the fitting portion.

  In addition, the presser pin can be positioned on the fitting portion by forming the fitting portion so as to be inclined slightly obliquely upward from the side portion of the insertion portion, or by forming a hook shape upward.

  Furthermore, it is possible to position the pressing pin in the fitting portion by adopting a structure in which the head fitting hole 53b of the stopper 53 is fitted to the head of the pressing pin fitted in the fitting portion. it can.

[Others]
In the above embodiment, the fitting portion 59b of the mounting hole 59 is formed to extend upward in the direction opposite to the blade tip edge 45a, but is formed to be inclined or to extend outward in the turning radius direction. It can also be made into a form.

  Even when the fitting portion 59b is formed to be inclined or curved upward, the first and second blade portions 45 are operated when the first and second blade portions 45 and 47 are driven by the drive of the stirring drive shaft 23. , 47 can be made to maintain the opposite of the head 61a with respect to the locking edge by the downward movement blocking force acting on 47.

  When formed so as to extend outward in the turning radius direction of the fitting portion 59b, the centrifugal force of the rotation revolution of the first and second scraping blades 25 and 27 and the downward movement-preventing force are generated during the operation of the blade portion. The force acting on the wings can be used, and the head 61a can be kept facing the locking edge.

  Instead of the stopper 53, a projection is provided between the insertion portion 59a and the fitting portion 59b, and the shaft portion 61c at the constricted portion 63 gets over the projection and moves from the insertion portion 59a to the fitting portion 59b. It is also possible to adopt a form that regulates disengagement from the fitting portion 59b.

  The mounting hole 59 has a circular shape larger than the head 61a of the presser pin 61, and the same relative movement as described above is permitted, and the locking structure of the stopper 53 is adopted to position the head 61a of the presser pin 61. You can also

  The stopper 53 may have the same configuration as the insertion portion 59a and the fitting portion 59b, and the constricted portion 63 may be fitted to the fitting portion 59b of the stopper 53 to position the presser pin 61.

  The presser pin 61 only needs to include a head 61a, and the constricted portion 63 is not essential.

  In an apparatus having a horizontal agitation drive shaft, the fitting portion 59b of the mounting hole 59 is formed in the lateral direction, and the lateral positioning of the presser pin with respect to the fitting portion is performed by getting over the protrusion. In the rotation direction of the scraping blade, the presser pin is pressed against the fitting portion by the resistance and centrifugal force received by the blade from the stirring vessel, and the presser pin is positioned.

[Operation of blade arm]
As described above, at the time of scraping stirring and mixing of the object to be stirred in the normal rotation direction, the object to be stirred moves while sliding upward along the first and second scraping blades 25 and 27, Get over the second scraping blades 25, 27. The material to be stirred over the first and second scraping blades 25 and 27 circulates behind the scraping of the first and second scraping blades 25 and 27 on the blade arm 29 side.

  FIG. 21 is an explanatory diagram illustrating a main part of a heating and stirring device including a blade arm according to a comparative example. FIG. 22 is an explanatory view showing a main part of the heating and agitating device provided with the blade arm of the embodiment of the present invention, together with the blade arm of the comparative example.

(Blade arm shoulder)
As shown in FIG. 21, the blade arm 29 of the comparative example includes a shoulder portion 28 in both the first and second arms 33 and 35. The shoulder 28 is formed by bending a metal bar that constitutes an arm so that two sides on both sides are substantially perpendicular.

  The object to be stirred that has been scraped by the first and second blade portions 45 and 47 and moved to above the first and second scraping blades 25 and 27 further moves to the blade arm 29 side.

  Therefore, if the shoulder portion 28 is present above the first and second scraping blades 25 and 27, an object to be stirred adheres to the shoulder portion 28, and becomes a starting point for the rotation. When the object to be stirred comes into contact with the shoulder 28 and two sides of the metal bar that constitutes a substantially right angle on both sides of the shoulder 28, the force received by the metal bar and the object to be stirred that have moved continuously above the scraping blades 25 and 27 By the action, a surface composed of the shoulder portion 28 of the metal bar including the scraping blades and two substantially right-angled sides on both sides thereof is formed, and the formed surface is easily supplied by receiving a larger force. In particular, an object to be stirred having a viscous or hard physical property is more likely to adhere to the shoulder portion 28.

  On the other hand, as shown in FIG. 22, in the embodiment (Δ type) in which the first and second arms 33 and 35 are inclined, the shoulder 28 does not exist, so that the object to be stirred is attached to the shoulder 28. Suppression and the formation of a surface due to interaction do not occur, so that the rotation can be suppressed.

  In other words, in the Δ type embodiment, the first and second arms 33 and 35 are inclined and there is no shoulder, and the upper side of the first and second scraping blades 25 and 27 and the first and second arms. The to-be-stirred material flows smoothly above 33 and 35.

(Blade arm central space)
As shown in FIG. 21, the comparative example has a large space between the first and second arms 33 and 35 (including the inner portion of the shoulder). However, if the adherence of the object to be stirred to the shoulder portion 28 increases, the space between the first and second arms 33 and 35 tends to be blocked, and the effective space for the object to be stirred to pass decreases.

  On the other hand, since the Δ type of the embodiment has little or no adherence of the object to be stirred, the space between the first and second arms 33 and 35 is always easily secured, and the object to be stirred is easily removed. . The angle between the opposed inner side of the first and second arms 33 and 35 and the upper edge of the first and second blade portions 45 and 47 is smaller than that of the comparative example. The first and second ring-shaped portions 37 and 39 can rotate with respect to the first and second arms 33 and 35. For this reason, it is difficult for the stirring object to adhere between the opposed inner side of the first and second arms 33 and 35 and the upper edge of the first and second blade parts 45 and 47, and the flow of the stirring object is maintained. can do.

(Space with can wall)
As shown in FIGS. 21 and 22, when the second scraping blade 27 comes closest to the can wall of the heating pot 3, the second scraping blade 27, the second arm 35, and the can wall of the heating pot 3. In the comparative example in which the space formed between the shoulders is present, the space is reduced. For this reason, the passage of the object to be stirred in this space becomes worse.

  On the other hand, in the Δ-shaped diagonal first and second arms 33 and 35 of the embodiment, the space between the second scraping blade 27, the second arm 35, and the can wall of the heating hook 3 is a shoulder portion. It is magnified by omitting, and the passage of the object to be stirred in this space is good.

(cost)
The Δ type has a simpler shape with no shoulder compared to the comparative example, and the first and second arms 33 and 35 are in the same plane as shown in FIG. 5B, and can be manufactured at low cost. it can.

  As described above, the arm base 31 supported on the stirring drive shaft 23 (rotation shaft) side of the stirring vessel 3, the first and second arms 33 and 35 (arm) extending from the arm base 31, and the first First and second ring-shaped parts 37 and 39 (arms) for attaching first and second blade parts 45 and 47 (blade parts) for scraping, which are provided at the distal ends of the second arms 33 and 35 The first and second arms 33 and 35 (arms) do not have a square shoulder and are linear or curved or a combination thereof. It has become. The arm has a bifurcated shape including first and second arms 33 and 35. With this structure, the above effects can be achieved.

[Example 2 of blade arm]
23 to 25 illustrate a blade arm according to the second embodiment. FIG. 23 is a longitudinal sectional view of an essential part of the heating and stirring apparatus. FIG. 24 is a front view of the blade arm. FIG. 25 is a front view showing attachment of the scraping blade to the blade arm. Note that the basic configuration of the second embodiment is the same as that of the above-described embodiment, and the same or corresponding components are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 23 to 25, the blade arm 29 of the second embodiment is formed in an arc shape in which the first and second arms 33 and 35 are continuous. In the second embodiment, the first arm 33 is formed in a substantially semicircular arc shape that extends from the first ring-shaped portion 37 of the first arm 33 through the arm base 31 to the second ring-shaped portion 39 of the second arm 35. Has been. The curved shape of the first and second arms 33 and 35 can be formed by a curve other than an arc. One of the first and second arms 33 and 35 may be formed in a linear shape, the other in an arc shape, or the other may be formed in a downwardly convex arc shape or the like. By such a change, the stirring function by the first and second arms 33 and 35 can be increased. Similar to the above embodiment, the second arm 35 is formed longer than the first arm 33. However, the lengths of the first and second arms 33 and 35 can be set freely.

  Therefore, also in the second embodiment, the same effect as that of the Δ type is obtained as compared with the comparative example of FIG.

  Moreover, in the second embodiment, the space inside the curve between the first and second arms 33 and 35 is larger than that of the Δ type, and the object to be stirred is easily removed and passed.

  Furthermore, the angle between the curved inner side of the first and second arms 33 and 35 and the upper edge of the first and second blade portions 45 and 47 is also substantially perpendicular, and the agitated material in this portion The streets are good.

[Example 3 of blade arm]
26 to 28 show a blade arm according to the third embodiment. FIG. 26 is a longitudinal sectional view of a main part of the heating and stirring apparatus. FIG. 27 is a front view of the blade arm. FIG. 28 is a front view showing attachment of the scraping blade to the blade arm. Note that the basic configuration of the third embodiment is the same as that of the first embodiment, and the same or corresponding components are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 26 to 28, the blade arm 29 of the third embodiment is formed in an arc shape in which the first and second arms 33 and 35 are continuous. The first and second arms 33 and 5 of the third embodiment are curved with a smaller curvature than that of the first modification, and pass from the first ring-shaped portion 37 of the first arm 33 through the arm base portion 31. The second arm 35 is formed in a continuous arc as a part of a larger circle than the first modified example up to the second ring-shaped portion 39 of the second arm 35. The curved shape of the first and second arms 33 and 35 can be formed by a curve other than an arc. One of the first and second arms 33 and 35 may be formed in a linear shape and the other may be formed in a curved shape, or one may be formed in a curved shape that protrudes downward. By such a change, the stirring function by the first and second arms 33 and 35 can be increased. The second arm 35 is formed longer than the first arm 33 as in the above embodiment. However, the lengths of the first and second arms 33 and 35 can be set freely.

  Therefore, also in the third embodiment, the same effects as the Δ type are obtained as compared with the comparative example of FIG.

  In addition, in the third embodiment, the space between the second scraping blade 27, the second arm 35, and the can wall of the heating pot 3 is enlarged as compared with the second embodiment, and the passage of the object to be stirred in this space is as follows. Even better. In addition, the first and second arms 33 and 35 are formed along the upper edges of the first and second blade portions 45 and 47, and the first and second blade portions 45 and 47 are the first. The first and second ring-shaped portions 37 and 39 can be rotated with respect to the second arms 33 and 35. For this reason, it is difficult for the stirring object to adhere between the curved inner side of the first and second arms 33 and 35 and the upper edge of the first and second blade parts 45 and 47, and the flow of the stirring object is maintained. can do.

[Embodiment 4 of the blade arm]
FIGS. 29 to 31 are blade arms according to the fourth embodiment. FIG. 29 is a longitudinal sectional view of an essential part of the heating and stirring apparatus. FIG. 30 is a front view of the blade arm. FIG. 31 is a front view showing attachment of the scraping blade to the blade arm. Note that the basic configuration of the fourth embodiment is the same as that of the first embodiment, and the same or corresponding components are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 29 to 31, in the blade arm 29 of the fourth embodiment, the first and second arms 33 and 35 have a downwardly convex curved shape (π type) with respect to the second embodiment. Yes. The curved shape of the first and second arms 33 and 35 can be formed by a curve other than an arc. One of the first and second arms 33 and 35 can be formed in a linear shape and the other in a downwardly convex curved shape. By such a change, the stirring function by the first and second arms 33 and 35 can be increased. Similar to the above embodiment, the second arm 35 is formed longer than the first arm 33. However, the lengths of the first and second arms 33 and 35 can be set freely.

  Therefore, the fourth embodiment also has the same effects as the Δ type compared to the comparative example of FIG.

  In addition, in the fourth embodiment, the space between the second scraping blade 27, the second arm 35, and the can wall of the heating pot 3 is further expanded as compared with the third embodiment, and the object to be stirred in this space. Is even better. Further, the first and second arms 33 and 35 are configured so as to be along the upper edge portions of the first and second blade portions 45 and 47 as compared with the third embodiment, and the first and second blade portions 45 are formed. , 47 can rotate with respect to the first and second arms 33, 35 by the first and second ring-shaped portions 37, 39. As a result of this rotation, as shown in FIG. 31, depending on the stirring rotation position, the first arm 33 overlaps the corner portion of the first blade portion 45, and the second arm 35 is on the inner side edge portion of the second blade portion 47 It can also be in a state of overlapping. For these reasons, the object to be stirred is difficult to adhere between the first and second arms 33 and 35 and the upper edge portions of the first and second blade parts 45 and 47, and the flow of the object to be stirred is maintained. Can do.

[Embodiment 5 of the blade arm]
32 to 34 are blade arms according to the fifth embodiment. FIG. 32 is a longitudinal sectional view of an essential part of the heating and stirring apparatus. FIG. 33 is a front view of the blade arm. FIG. 34 is a front view showing attachment of the scraping blade to the blade arm. Note that the basic configuration of the fifth embodiment is the same as that of the first embodiment, and the same or corresponding components are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 32 to 34, in the blade arm 29 of the fifth embodiment, the first and second arms 33 and 35 are composed of the arm base 31 and the first and second ring-shaped portions 37 and 39 (arm tips). A curved portion that changes the extending direction inward. In the fifth embodiment, the first and second arms 33 and 35 are respectively provided with semicircular arc portions 33a and 35a, and both ends of the semicircular arc portions 33a and 35a are linearly extended in the turning radius direction, and the arm base portion 31 and first and second ring-shaped portions 37 and 39. That is, the semicircular arc portions 33a and 35a are directed toward the first and second ring-shaped portions 37 and 39 by changing the extending direction of the linear portion extending from the arm base portion 31 side inward. Similar to the above embodiment, the second arm 35 is formed longer than the first arm 33. However, the lengths of the first and second arms 33 and 35 can be set freely.

  Therefore, in the fifth embodiment, the same effect as that of the Δ type is obtained in the form in which the substantially right-angled shoulder portion 28 does not exist as compared with the comparative example of FIG.

  Moreover, in the fifth embodiment, the first arm 33 overlaps the corner portion or the side edge portion of the first blade portion 45, and the second arm 35 protrudes upward from the upper edge portion of the second blade portion 47. It becomes a state. For this reason, adhesion of the to-be-stirred object between the 1st, 2nd arms 33 and 35 and the 1st, 2nd blade | wing parts 45 and 47 is suppressed. The first and second arms 33 and 35 have a stirrer action.

[Embodiment 6 of the blade arm]
35 to 37 are blade arms according to the sixth embodiment. FIG. 35 is a longitudinal sectional view of a main part of the heating and stirring apparatus. FIG. 36 is a front view of the blade arm. FIG. 37 is a front view showing attachment of the scraping blade to the blade arm. Note that the basic configuration of the sixth embodiment is the same as that of the first embodiment, and the same or corresponding components are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 35 to 37, the vane arm 29 of the sixth embodiment is similar to the fifth embodiment in that the first and second arms 33 and 35 are composed of the arm base 31 and the first and second ring-shaped portions 37. , 39 (arm tip portion) and a shape including a curved portion that changes the extending direction inward. In the sixth embodiment, the first and second ring-shaped portions are formed such that the straight portions from the semicircular arc portions 33a and 35a toward the first and second ring-shaped portions 37 and 39 are inclined downward with respect to the turning radius direction. 37, 39. Similar to the above embodiment, the second arm 35 is formed longer than the first arm 33. However, the lengths of the first and second arms 33 and 35 can be set freely.

  Therefore, in the sixth embodiment, the same effect as that of the Δ type is obtained in the form in which the substantially right-angled shoulder portion 28 does not exist as compared with the comparative example of FIG.

  Moreover, in the sixth embodiment, the first arm 33 overlaps the corner portion or upper edge portion of the first blade portion 45, and the second arm 35 extends upward from the upper edge portion of the second blade portion 47. Protruding state. For this reason, adhesion of the to-be-stirred object between the 1st, 2nd arms 33 and 35 and the 1st, 2nd blade | wing parts 45 and 47 is suppressed. The first and second arms 33 and 35 have a stirrer action.

[Reference Example 1]
FIG. 38 is an enlarged cross-sectional view of a main part according to Reference Example 1 and showing the attachment of scraping blades. FIG. 39 is an end view of the attachment shaft portion viewed from the blade tab side. The basic structure is the same as in FIG. 6 of the first embodiment, and the corresponding parts are denoted by the same reference numerals, and redundant description is omitted. The difference between the first and second scraping blades is the same as that of the first embodiment, and the first scraping blade will be described.

  As shown in FIGS. 38 and 39, the first scraping blade 25B of the first reference example does not have a key groove-like portion in the mounting hole 37a of the first ring-like portion 37, and is formed straight. .

  A blade tab 77 is provided at the tip 57Ba of the mounting shaft portion 57B. The blade tab 77 is a name because the tab is a member on the first scraping blade 25B side.

  A tab mounting slit 57Bab is formed at the tip 57Ba of the mounting shaft portion 57B. The blade tab 77 is disposed so as to fit into the slit 57Bab, and is rotatably supported by a tab pin 79. A long hole 77 a is formed in the blade tab 77, and the long hole 77 a is fitted to the tab pin 79. The blade tab 77 is formed with an arc portion 77b for allowing a rotating operation.

  Accordingly, the blade tab 77 is rotatable with respect to the tab pin 79 and can move linearly within the range of the elongated hole 77 a with respect to the tab pin 79. By rotation and linear movement of the blade tab 77, the blade tab 77 can be displaced from a first position along the attachment shaft portion 57B to a second position intersecting perpendicularly to the attachment shaft portion 57B.

  Therefore, as an attachment / detachment mechanism part for manually attaching / detaching the attachment shaft part 57B to / from the first ring-like part 37 between the first ring-like part 37 as the attachment receiving part and the attachment shaft part 57B as the attachment coupling part. The blade tab 77 is provided.

  When attaching the first scraping blade 25 to the first ring-shaped portion 37, the mounting shaft portion 57B is inserted into the mounting hole 37a of the first ring-shaped portion 37 together with the blade tab 77 in the first position, The stopper collar 55 is brought into contact with the first ring-shaped portion 37.

  Next, the blade tab 77 is rotated around the tab pin 75 at a position where the blade tab 77 has passed through the attachment hole 37a, so that the blade tab 77 is orthogonal to the axis of the attachment shaft portion 57B. At this time, the arc portion 77b of the blade tab 77 slides with respect to the end surface of the first ring-shaped portion 37, and the blade tab 77 is allowed to rotate.

  Next, the blade tab 77 is linearly moved downward along the end surface of the first ring-shaped portion 37, and the blade tab 77 is displaced to the second position.

  The attachment shaft portion 57B is prevented from coming off by a lock in which the blade tab 77 is engaged with the end surface of the first ring-shaped portion 37 at the second position.

  Therefore, the first scraping blade 25B can be manually attached to and detached from the blade arm 29 using the blade tab 77 as an attachment / detachment mechanism.

  Note that a gap is not formed between the end surface of the first ring-shaped portion 37 and the rear end of the stopper collar 55 and between the blade tab 77 and the end surface of the first ring-shaped portion 37 at the second position. Alternatively, a gap with an average of 0.55 mm and at least 0.2 mm may be set.

[Reference Example 2]
FIG. 40 is an exploded cross-sectional view according to Reference Example 2 in which a part of the blade part and the blade mounting plate are cross-sectioned. The basic structure is the same as in FIG. 6 of the first embodiment, and the corresponding parts are denoted by the same reference numerals, and redundant description is omitted. The difference between the first and second scraping blades is the same as that of the first embodiment, and the first scraping blade will be described.

  As shown in FIG. 40, the first scraping blade 25C of the second reference example does not have a blade pressing plate, and a pressing pin 61C is provided integrally with the first blade portion 45C. The base portion 61b of the presser pin 61C and the front surface and the back surface of the first blade portion 45C are set substantially flush with each other.

  In assembling, the pressing pin 61C is inserted through the insertion portion 59a so that the first blade portion 45C is overlapped with the first blade mounting plate 49. By this insertion, the head 61a of the presser pin 61C is protruded from the attachment plate portion 56 of the first blade attachment plate 49, and the first blade portion 45C is aligned with the attachment plate portion 56. Then, the first blade portion 45C is relatively moved along the attachment plate portion 56 in the direction opposite to the blade tip edge 45a, and the presser pin 61C is fitted to the fitting portion 59b.

  In this case, the first blade portion 45C and the mounting plate portion 56 can be brought into close contact with each other as in the first embodiment, or a gap can be set.

  The structure of the stopper 53, the stopper collar 55, etc. is the same as that of the first embodiment. Moreover, although the same thing as FIG. 6 was employ | adopted for the 1st blade | wing attachment plate 49 of FIG. 40, the form of Example 2 of FIG. 38 is also employable.

  In this reference example, the number of parts is reduced, and disassembly cleaning, assembly, and parts management are facilitated. In addition, the number of member joint surfaces is reduced, and accumulation and retention of food materials between members can be reduced.

  In this embodiment, the pressing pin 61C may be provided integrally or separately on the first blade attachment plate 49 side, and the attachment hole 59 may be provided on the first blade portion 45C side.

  In this case, the positional relationship from the insertion portion 59a to the fitting portion 59b of the mounting hole 59 is reversed, and the fitting portion 59b continues to the fitting portion 59b toward the blade tip edge 45a.

  The second scraping blade is the same as the first scraping blade 25C in the relationship described in the first embodiment.

1 scraping and stirring device 3 heating pot (stirring container)
23 Stirring drive shaft (rotary shaft)
25, 25B, 25C First scraping blade 27, 27B, 27C Second scraping blade 28 Shoulder 29 Blade arm 33 First arm 35 Second arm 45, 45C First blade portion 47, 47C First 2 feathers

Claims (4)

A scraping blade that attaches a blade portion for scraping to the rotating shaft side of the stirring vessel via a blade arm,
The blade arm is formed in a shape extending from the rotating shaft side to the blade portion side through an inclination or a curve, and has a substantially right shoulder portion serving as a starting point of rotation between the rotating shaft side and the blade portion side. Do not have,
A scraping blade characterized by that. The scraping blade according to claim 1,
The blade arm is linearly inclined from the rotary shaft side to the blade portion side, or formed in an arc shape continuous from the rotary shaft side to the blade portion side,
A scraping blade characterized by that. The scraping blade according to claim 1,
The blade arm includes a curved portion that extends from the rotating shaft side toward the outer side in the rotational radial direction, and changes the direction of the extending direction to the inner side toward the scraping blade side.
A scraping blade characterized by that. The scraping blade according to any one of claims 1 to 3,
The blade portion includes a pair of first and second blade portions,
The blade arm includes a bifurcated first and second arm extending from an arm base,
A scraping blade characterized by that.

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