Self-locking structure of stirring equipment

Abstract

The invention discloses a self-locking structure of stirring equipment, the stirring equipment comprises a base, a stirring container, a motor and a stirring knife, the base is provided with a self-locking mechanism, and the self-locking mechanism comprises a key cap, a key core, a clamping block and a key cover; the base is provided with a mounting position, and the key cap is sleeved in the mounting position and is exposed on the bottom surface of the base; the key core is sleeved on the key cap, the clamping block is sleeved on the key core, the key cover is positioned above the mounting position, and the key cap, the key core and the clamping block are limited between the mounting position and the key cover; the self-locking mechanism has a release state and a locking state. The self-locking structure is additionally arranged in the base of the stirring equipment, the self-locking structure and the power shaft are switched into a locking state, the lower end of the power shaft is clamped into the limiting groove in the top of the clamping block, and when the stirring cutter is driven by a tool to rotate, the power shaft cannot rotate along with the stirring cutter, so that the stirring cutter can be detached when the cutter shaft is rotated in the forward direction; the inner bottom wall of the stirring cavity can be cleaned more conveniently, and the stirring cutter can be remounted on the power shaft when the cutter shaft is rotated reversely.

Description

Technical Field

[0001] This invention relates to the field of mixing equipment technology, and more specifically to a self-locking structure for mixing equipment. Background Technology

[0002] The mixing chamber of the mixing equipment is equipped with a mixing blade. When the motor inside the machine body drives the mixing blade to rotate, it causes the mixing blade to rotate to mix / cut the food.

[0003] In existing technologies, the mixing blades are all positioned close to the bottom of the mixing chamber to avoid creating a void area (an area that the mixing blades cannot cut) at the bottom of the mixing chamber. During cleaning, because the mixing blades are close to the inner bottom wall of the mixing chamber, the inner bottom wall of the mixing chamber is difficult to clean. If cleaning is not done properly for a long time, food residue will accumulate, affecting the user's health. In addition, the motor of the mixing equipment is set to rotate in the forward direction when powered on, which also drives the mixing blade to rotate in the forward direction. When not powered on, the motor can be driven to rotate in the forward or reverse direction by external force. The blade shaft and the motor shaft are usually locked together with screws. When the mixing blade needs to be disassembled, the motor shaft rotates synchronously when the blade shaft is rotated. Without disassembling the mixing equipment, the operating space is very limited, and the user cannot hold the motor shaft to fix it. Therefore, when disassembling the mixing blade, the motor shaft rotates synchronously when the blade shaft rotates, making it impossible to disassemble and making it difficult to clean the inner bottom wall of the mixing chamber.

[0004] To address the aforementioned issues, the applicant proposed the following self-locking structure for the mixing equipment. Summary of the Invention

[0005] In view of this, the present invention provides a self-locking structure for a stirring device.

[0006] To achieve the above objectives, the present invention provides a self-locking structure for the mixing equipment. The mixing equipment includes: a base, a mixing container mounted on the base, a motor located inside the base, and a mixing blade located inside the mixing container. The mixing blade is threadedly mounted to the top of the power shaft of the motor via a blade shaft. The power shaft extends downward through the main body of the motor. The base is provided with a self-locking mechanism, which includes: a button cap, a key core, a locking block, a button cover, and a return spring. The base is provided with a mounting position, the key cap is fitted inside the mounting position and exposed on the bottom surface of the base; the key core is fitted on the key cap, the locking block is fitted on the key core, and the key cover is located above the mounting position, restricting the key cap, key core, and locking block between the mounting position and the key cover; The self-locking mechanism has a released state and a locked state, wherein: In the locked state, the button cap pushes the locking block upward through the key core, and the end of the power shaft engages with the limiting groove of the locking block; When released, the button cap, the key core, and the locking block move downwards, and the end of the power shaft leaves the limiting groove of the locking block.

[0007] As a preferred embodiment of the invention, the inner wall surface of the mounting position is provided with a vertical guide groove, which includes a first guide groove and a second guide groove, wherein the depth of the first guide groove is greater than the depth of the second guide groove. The button cap has a protrusion on its periphery, which can be engaged in the first guide groove and the second guide groove.

[0008] As a preferred embodiment of the invention, the mounting position has an inclined surface above the second guide groove.

[0009] As a preferred embodiment of the invention, the keycap is provided with a serrated groove around its edge; the key core is provided with a protrusion that can be engaged with the first guide groove; in the locked state, the protrusion is supported on the inclined surface, and in the released state, the protrusion is engaged with the first guide groove.

[0010] As a preferred embodiment of the invention, the lower surface of the protrusion is provided with an inclined surface that matches the inclined surface.

[0011] As a preferred embodiment of the invention, the key core is provided with a protrusion, and a return spring is sleeved on the protrusion.

[0012] As a preferred embodiment of the invention, the button cover is fixed to the base with a screw, and the end face of the button cover is provided with a through hole, through which the locking block extends upward.

[0013] As a preferred embodiment of the invention, the card block is provided with a set of symmetrical card feet protruding circumferentially, and the distance between the two card feet is greater than the maximum width of the perforation.

[0014] As a preferred embodiment of the invention, the peripheral wall of the button cover is provided with a strip groove, and the trigger end of a micro switch passes through the strip groove and is connected to the card block. When the card block moves upward, the micro switch controls the main current circuit to disconnect; when the card block moves downward, the micro switch controls the main current circuit to connect.

[0015] As a preferred embodiment of the invention, the top of the cutter shaft is provided with a groove, and the locking direction of the cutter shaft is opposite to the rotation direction of the power shaft.

[0016] As can be seen from the above technical solution, compared with the prior art, the present invention has the following beneficial technical effects: The present invention adds a self-locking structure to the base of the stirring device. During the stirring process, the self-locking structure and the power shaft are in a released state, and the power shaft can drive the stirring blade to rotate, so that the stirring device can achieve cutting / stirring. When disassembly is required, the self-locking structure and the power shaft are switched to a locked state, and the lower end of the power shaft is inserted into the limiting groove at the top of the locking block. When disassembling the stirring blade, the power shaft will not rotate with the tool when the stirring blade is driven to rotate. Therefore, the stirring blade can be disassembled when the blade shaft is rotated in the forward direction, which makes it easier to clean the bottom wall of the stirring chamber. When the blade shaft is rotated in the reverse direction, the stirring blade can be reinstalled on the power shaft. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the mixing equipment. Figure 2 This is a cross-sectional schematic diagram of the stirring device in its released state; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a cross-sectional view of the mixing equipment in the locked state; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 A schematic diagram showing the mixing equipment with the mixing container hidden. Figure 7 This is a partial schematic diagram of the mixing equipment; Figure 8 This is an exploded view of the base and self-locking structure in the mixing equipment; Figure 9 for Figure 7 Enlarged view of point C.

[0019] Explanation of reference numerals in the attached figures Base 100; Mounting position 110; First guide groove 111; Second guide groove 112; Inclined surface 113; Tooth block 114; Stirring container 200; Motor 300; Power shaft 310; Main body 320; Stirring blade 400; Blade shaft 410; Groove 411; Self-locking mechanism 500; Button cap 510; Protrusion 511; Serrated groove 512; Key core 520; Protrusion 521; Inclined surface 5211; Protruding column 522; Locking block 530; Limiting groove 531; Locking foot 532; Button cover 540; Through hole 541; Strip groove 542; Return spring 550; Micro switch 600; Trigger end 610. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0021] In the description of this application, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] For the self-locking structure of the mixing equipment, please refer to [link / reference]. Figure 1-9 As shown, the mixing device includes: a base 100, a mixing container 200 mounted on the base 100, a motor 300 located in the base 100, and a mixing blade 400 located in the mixing container 200. The upper end of the power shaft 310 is inserted into the mixing chamber. The mixing blade 400 is threadedly mounted to the top of the power shaft 310 of the motor 300 through the blade shaft 410. The power shaft 310 extends downward through the body 320 of the motor 300.

[0024] The mixing equipment can be a soymilk maker, juicer, blender, etc. The mixing container 200 is fixedly installed on the base 100. The mixing container 200 and the base 100 are fixedly connected. The motor 300 is fixedly installed inside the base 100. A mixing chamber is formed inside the mixing container 200. The mixing blade 400 rotates at high speed inside the mixing chamber under the drive of the motor 300 to mix / cut the ingredients. The motor 300 has a main body 320 and a power shaft 310. The power shaft 310 is vertically arranged, and the upper end of the power shaft 310 extends out of the main body 320 and is connected to the cutter shaft 410. The lower end of the power shaft 310 corresponds to the self-locking mechanism 500.

[0025] Specifically, the base 100 is provided with a self-locking mechanism 500, which includes: a key cap 510, a key core 520, a locking block 530, and a key cover 540. The base 100 is provided with a mounting position 110. The key cap 510 is fitted inside the mounting position 110 and exposed on the bottom surface of the base 100. The key core 520 is fitted on the key cap 510, the locking block 530 is fitted on the key core 520, and the key cover 540 is located above the mounting position 110, which restricts the key cap 510, key core 520, and locking block 530 between the mounting position 110 and the key cover 540. The self-locking mechanism 500 has a released state and a locked state, wherein: like Figure 4-5 As shown, in the locked state, the button cap 510 pushes the locking block 530 upward through the key core 520, and the end of the power shaft 310 is engaged in the limiting groove 531 of the locking block 530; like Figure 2-3 As shown, in the released state, the key cap 510, key core 520 and locking block 530 move down, and the end of the power shaft 310 leaves the limiting groove 531 of the locking block 530.

[0026] like Figure 2 As shown, the upper end of the power shaft 310 is provided with a threaded mounting hole, and the lower end of the blade shaft 410 of the stirring blade 400 is provided with an external thread, and the blade shaft 410 and the power shaft 310 are threadedly connected. When the motor 300 is powered on, the power shaft 310 rotates in the forward direction, driving the stirring blade 400 to rotate in the forward direction; when the power shaft 310 is stationary, the blade shaft 410 rotates in the reverse direction to lock onto the power shaft 310. During the operation of motor 300, the reaction force of food on stirring blade 400 is opposite to the rotation direction of power shaft 310. Therefore, during operation, stirring blade 400 and power shaft 310 are locked together. When the stirring blade 400 is rotated by an external force (such as a user's hand) without being powered on, the power shaft 310 rotates accordingly, either in the forward direction or in the reverse direction.

[0027] Therefore, when it is necessary to disassemble the mixing blade 400, it is difficult to remove the mixing blade 400 because the operating space is limited and the power shaft 310 cannot be fixed.

[0028] With the self-locking mechanism 500, the stirring blade 400 can be easily disassembled and assembled.

[0029] When the mixing equipment is in use, the self-locking mechanism 500 and the power shaft 310 are in the released state. After power is turned on, the motor 300 drives the mixing blade 400 to rotate at high speed to mix / cut the food in the mixing chamber. When the mixing equipment is not in use, the motor 300 is de-energized. When it is necessary to remove the mixing blade 400 to clean the bottom wall of the mixing chamber, the user presses the button cap 510 at the bottom of the mixing equipment. The button cap 510 pushes the key core 520 upward, and the key core 520 pushes the locking block 530 upward, so that the end of the power shaft 310 is locked in the limiting groove 531, limiting the power shaft 310. When the user then rotates the blade shaft 410 with a tool, the power shaft 310 will not rotate with it, thus removing the mixing blade 400. Furthermore, such as Figure 6 As shown, the top of the cutter shaft 410 is provided with a slot 411. The locking direction of the cutter shaft 410 is opposite to the rotation direction of the power shaft 310. That is, when disassembling, a screwdriver is connected to the cutter shaft 410, and the cutter shaft 410 is rotated in the forward direction to remove the cutter shaft 410 from the top of the power shaft 310, thus removing the mixing blade 400 and making it convenient for the user to clean the inner bottom wall of the entire mixing chamber. After the mixing chamber is cleaned, the blade shaft 410 is rotated in the reverse direction using a tool. At this time, the power shaft 310 remains stationary. The mixing blade 400 is then reinstalled onto the power shaft 310.

[0030] Continue as Figure 6 As shown, slot 411 can be a flat slot, so the tool is a flathead screwdriver; For example, the slot 411 can also be a Phillips head slot, in which case the tool is a Phillips head screwdriver; like Figure 8 As shown, the limiting groove 531 of the card block 530 can be a slot, so the end of the power shaft 310 is set as a slot. Optionally, the limiting groove 531 can be changed to other shapes, as long as it is not circular; for example, if the limiting groove 531 is changed to a cross shape, the end of the power shaft 310 is set as a cross.

[0031] The above steps allow for the disassembly of the stirring blade 400. After the stirring blade 400 is reinstalled, the user presses the button cap 510 again, causing the key core 520 and the locking block 530 to move down and reset, and the end of the power shaft 310 to leave the limit groove 531.

[0032] In one implementation, such as Figure 9 As shown, the inner wall surface of the mounting position 110 is provided with a vertical guide groove, which includes a first guide groove 111 and a second guide groove 112. The depth of the first guide groove 111 is greater than the depth of the second guide groove 112. The keycap 510 has a protrusion 511 on its periphery, which can be inserted into the first guide groove 111 and the second guide groove 112.

[0033] Specifically, such as Figure 7-8 As shown, the mounting position 110 penetrates the base 100. Multiple first guide grooves 111 and second guide grooves 112 are respectively provided, and the first guide grooves 111 and second guide grooves 112 are alternately distributed. The depth of the first guide groove 111 and the second guide groove 112 refers to... Figure 7 The radial direction of the mounting position 110 shown; After the keycap 510 is installed in the mounting position 110, the protrusion 511 is inserted into the first guide groove 111 and the second guide groove 112. When the user applies force to press the keycap 510, the first guide groove 111 and the second guide groove 112 play a guiding role, guiding the keycap 510 to move up and down in a straight line.

[0034] Furthermore, the outer diameter of the protrusion 511 is slightly smaller than the inner diameter of the second guide groove 112 and slightly larger than the hole diameter of the mounting position on the base, which is just enough to limit the downward fall of the keycap 510 and prevent the keycap 510 from falling out of the base; the width of the first guide groove 111 and the second guide groove 112 is equal and slightly larger than the width of the protrusion 511, so that the protrusion 511 can move smoothly in the first guide groove 111 and the second guide groove 112. Furthermore, an inclined surface 113 is provided above the second guide groove 112 within the mounting position 110; such as Figure 3 As shown, the mounting position 110 is provided with a toothed block, and the top of the toothed block 114 is set with an inclined surface; Furthermore, continue as Figure 8 As shown, the keycap 510 is provided with a serrated groove 512 around it, and the key core 520 is provided with a protrusion 521 that can be inserted into the first guide groove 111; the lower surface of the protrusion 521 is provided with a bevel 5211, which matches the bevel 113.

[0035] Furthermore, the thickness of the protrusion 521 is slightly less than the depth of the first guide groove 111 and slightly greater than the depth of the second guide groove 112; the width of the protrusion 521 is slightly less than the width of the first guide groove 111, so that the protrusion 521 can move smoothly in the first guide groove 111.

[0036] Here, depth refers to Figure 9 The radial dimensions of the first guide groove 111 and the second guide groove 112 are such that the protrusion 521 can enter the first guide groove 111, but the protrusion 521 cannot enter the second guide groove 112.

[0037] Furthermore, the inclined surface 5211 and the inclined surface 113 are both inclined surfaces in the same direction, and the inclination angles are refined within the physical space allowed by the specific motion stroke. This invention only protects the mechanical motion principle. Specifically, the inclined surface 5211 of the bump 521 of the key core 520 can contact the serrated groove 512 of the key cap 510, and the inclined surface 5211 of the bump 521 of the key core 520 can contact the inclined surface 113. In the released state, the bottom surface of the keycap 510 is flush with the bottom surface of the base 100, the protrusion 521 of the key core 520 is engaged in the first guide groove 111, and the locking block 530 moves down under its own gravity. When switching to the locked state, the user applies force to push the keycap 510 upward. The protrusion 511 of the keycap 510 pushes the protrusion 521 of the key core 520. At the same time, with the cooperation of the serrated groove 512 of the keycap 510 and the inclined surface 5211 of the key core 520, the key core 520 is pushed to rotate at an angle, so that the inclined surface 5211 of the key core 520 and the inclined surface 113 cooperate, and the protrusion 521 is supported on the inclined surface 113, that is, the key core 520 moves upward. At the same time, it pushes the locking block 530 upward, so that the end of the power shaft 310 is locked into the limiting groove 531. In this embodiment, the limiting groove 531 is in the shape of a straight line, and the end of the power shaft 310 is also in the shape of a straight line. After the power shaft 310 has rotated, although the end of the power shaft 310 and the limiting groove 531 are vertically aligned, their angles may be slightly off. Therefore, the user can apply force to rotate the power shaft 310 so that the angles are aligned and the end of the power shaft 310 can be correctly inserted into the limiting groove 531.

[0038] After the user presses the keycap 510 for the first time, the protrusion 521 of the key core 520 is supported by the inclined surface 113. When the user releases the keycap 510, the keycap 510 returns to its original position under its own weight. After the user presses the keycap 510 for the second time, the serrated groove 512 of the keycap 510 and the inclined surface 5211 of the key core 520 work together to push the key core 520 to rotate at an angle, so that the protrusion 521 aligns with the first guide groove 111. The key core 520 and the locking block 530 can then move downwards under their own weight. Furthermore, the key core 520 is provided with a protrusion 522, and a return spring 550 is sleeved on the protrusion 522. The return spring 550 provides a reset force. When the user presses the key cap 510 for the first time, the key core 520 moves upward and the return spring 550 is compressed. When the user presses the key cap 510 for the second time, the key core 520 rotates to the first guide groove 111 corresponding to the protrusion 521. Under the elastic force of the return spring 550, the key core 520 moves downward and the locking block 530 also moves downward and resets.

[0039] Furthermore, the reset spring 550 and the protrusion 522 are tightly fitted together. The length of the reset spring 550 is designed to ensure that the limit groove 531 is disengaged from the power shaft 310 in the unlocked state. In the unlocked state, the micro switch spring provides a downward force to keep the latch 530, protrusion 522 and button cap 510 facing downward.

[0040] In one embodiment, the button cover 540 is fixed to the base 100 with screws. The end face of the button cover 540 is provided with a through hole 541. The locking block 530 extends upward through the through hole 541. The locking block 530 is provided with a set of symmetrical locking feet 532 protruding in the circumferential direction. The distance between the two locking feet 532 is greater than the maximum width of the through hole 541, so that the locking block 530 cannot completely pass through the through hole 541 and disengage upward.

[0041] In one embodiment, a strip groove 542 is provided on the peripheral wall of the button cover 540. The trigger end 610 of a micro switch 600 passes through the strip groove 542 and is connected to the locking block 530. After the locking block 530 moves upward, the micro switch 600 controls the main current circuit to disconnect. That is, in the locked state, the entire short circuit is disconnected, and the stirring equipment cannot be operated. This avoids operational errors when disassembling and assembling the stirring blade 400, which could cause the motor 300 to rotate and run, accidentally injuring the user. At the same time, it also prevents the motor 300 from being jammed and damaged. After the locking block 530 moves downward, the micro switch 600 controls the main current circuit to be connected. At this time, the stirring equipment can be started and operated.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0043] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. The self-locking structure of the mixing equipment, which includes: The base (100), the stirring container (200) assembled on the base (100), the motor (300) located in the base (100) and the stirring blade (400) located in the stirring container (200), wherein the stirring blade (400) is threadedly mounted to the top of the power shaft (310) of the motor (300) via a blade shaft (410), and the power shaft (310) extends downward through the body (320) of the motor (300), characterized in that: the base (100) is provided with a self-locking mechanism (500), wherein the self-locking mechanism (500) includes: a key cap (510), a key core (520), a locking block (530), a key cover (540) and a return spring (550); The base (100) is provided with a mounting position (110), the key cap (510) is fitted inside the mounting position (110) and exposed on the bottom surface of the base (100); the key core (520) is fitted on the key cap (510), the locking block (530) is fitted on the key core (520), and the key cover (540) is located above the mounting position (110), restricting the key cap (510), key core (520), and locking block (530) between the mounting position (110) and the key cover (540); The self-locking mechanism (500) has a released state and a locked state, wherein: In the locked state, the button cap (510) pushes the locking block (530) upward through the key core (520), and the end of the power shaft (310) is engaged in the limiting groove (531) of the locking block (530). When released, the key cap (510), the key core (520) and the locking block (530) move downwards, and the end of the power shaft (310) leaves the limiting groove (531) of the locking block (530).

2. The self-locking structure of the stirring device according to claim 1, characterized in that: The inner wall of the mounting position (110) is provided with a vertical guide groove, which includes a first guide groove (111) and a second guide groove (112), wherein the depth of the first guide groove (111) is greater than the depth of the second guide groove (112). The button cap (510) has a protrusion (511) on its periphery, which can be inserted into the first guide groove (111) and the second guide groove (112).

3. The self-locking structure of the stirring device according to claim 2, characterized in that: The mounting position (110) has an inclined surface (113) above the second guide groove (112).

4. The self-locking structure of the stirring device according to claim 3, characterized in that: The keycap (510) is provided with a serrated groove (512) around its edge; the key core (520) is provided with a protrusion (521) that can be inserted into the first guide groove (111); in the locked state, the protrusion (521) is supported on the inclined surface (113), and in the released state, the protrusion (521) is inserted into the first guide groove (111).

5. The self-locking structure of the stirring device according to claim 4, characterized in that: The lower surface of the protrusion (521) is provided with a slope (5211) that matches the sloped surface (113).

6. The self-locking structure of the stirring device according to claim 1, characterized in that: The key core (520) is provided with a protrusion (522), and a return spring (550) is sleeved on the protrusion (522).

7. The self-locking structure of the stirring device according to claim 1, characterized in that: The button cover (540) is fixed to the base (100) with screws. The end face of the button cover (540) is provided with a through hole (541). The locking block (530) extends upward through the through hole (541).

8. The self-locking structure of the stirring device according to claim 7, characterized in that: The card block (530) is provided with a set of symmetrical card feet (532) protruding in the circumferential direction, and the distance between the two card feet (532) is greater than the maximum width of the perforation (541).

9. The self-locking structure of the stirring device according to claim 1, characterized in that: The peripheral wall of the button cover (540) is provided with a strip groove (542). The trigger end (610) of a micro switch (600) passes through the strip groove (542) and is connected to the card block (530). When the card block (530) moves up, the micro switch (600) controls the main current circuit to disconnect. When the card block (530) moves down, the micro switch (600) controls the main current circuit to connect.

10. The self-locking structure of the stirring device according to claim 1, characterized in that: The top of the cutter shaft (410) is provided with a slot (411), and the locking direction of the cutter shaft (410) is opposite to the rotation direction of the power shaft (310).

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