A structure and stirring device for preventing a knife group from falling during disassembly

Abstract

The present invention relates to the field of stirring, and discloses a structure to prevent a knife group from falling during disassembly and a stirring device. The structure to prevent a knife group from falling during disassembly comprises a knife group, a chassis and a fixing seat, the knife group comprises blades and a fixing part, the fixing part passes through a through hole of the chassis and rotates to a preset angle, the fixing part reaching the preset angle can abut against the chassis to limit the knife group from detaching from the chassis, and the fixing part is fixed on the fixing seat. The stirring device comprises the structure to prevent a knife group from falling during disassembly, and also comprises a bottom shell. After the knife group passes through the chassis and rotates a certain angle, the knife group is fixed. After the knife group is unlocked, the knife group cannot be directly detached from the container, but needs to be rotated a certain angle before being taken out. Therefore, when the user inverts the container to unlock the knife group, the knife group will not fall directly, and the structure is simple and the cost is low.

Description

Technical Field

[0001] The invention relates to the field of stirring, and in particular to a structure for preventing a knife group from falling during disassembly and a stirring device. Background Art

[0002] Electrical appliances with stirring functions, such as food processors, juicers, soymilk machines, blenders, and wall breakers, mainly include a container and a stirring knife group. The stirring knife group is installed at the bottom of the container and realizes the stirring function by high-speed rotation. In order to clean the stirring knife group, the stirring knife group is generally detachable. However, when disassembling the stirring knife group, without any prompt, the user generally holds the container body with one hand and unlocks the fastening accessories of the knife group with the other hand. Since the fastening accessories are located at the bottom of the container, inverting the container is the most labor-saving and convenient way. However, when the fastening accessories of the knife group are loosened, the knife group will fall directly from the inverted container, which may not only cause damage to the knife group, but also bring danger to the user. For uninformed consumers or consumers who have not paid attention to the prompts, this phenomenon often occurs. Therefore, a structure for preventing the knife group from falling during disassembly and a corresponding stirring device are needed. When the user inverts the container and unlocks the knife group, the knife group will not fall directly. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a structure for preventing the knife group from falling during disassembly and a stirring device, which solves the problem in the prior art that the knife group will directly fall when the user inverts the container to unlock the knife group.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A structure for preventing a knife group from falling during disassembly comprises a knife group, a chassis and a fixing seat, wherein the knife group comprises blades and a fixing portion, wherein the fixing portion passes through a through hole of the chassis and rotates to a preset angle, and the fixing portion reaching the preset angle can abut against the chassis to limit the knife group from detaching from the chassis, and the fixing portion is fixed on the fixing seat.

[0006] As a further improvement of the above technical solution, the knife group further includes a positioning portion, the positioning portion is located between the fixing portion and the blade, the positioning portion has the same shape as the through hole, and the positioning portion is inserted into the through hole to achieve positioning.

[0007] As a further improvement of the above technical solution, the through hole includes a plurality of through slots, the fixing part is provided with a plurality of fixing blocks, the through slots correspond to the fixing blocks one by one, and the fixing blocks pass through the through slots to enable the fixing part to pass through the through hole.

[0008] As a further improvement of the above technical solution, a limiting portion is provided inside the fixed seat, and the limiting portion includes a blocking surface and a ramp surface. The limiting portion rotates circumferentially to cause the fixed block to move along the ramp surface and finally reach the blocking surface, thereby limiting the axial displacement of the tool group.

[0009] As a further improvement of the above technical solution, the positioning portion can abut against the inner wall of the through hole to limit the circumferential rotation of the knife assembly, and the fixing portion can pass through the through hole.

[0010] As a further improvement of the above technical solution, the chassis also includes a step surface, the through hole is located at the center of the step surface, and the cavity formed by the step surface and the inner wall of the chassis around the step surface accommodates the fixing part and the fixing seat.

[0011] As a further improvement of the above technical solution, the cross section of the positioning portion is a polygon.

[0012] As a further improvement of the above technical solution, the cross-section of the positioning portion is hexagonal, the length of the side of the through hole with the through groove is smaller than the length of the other sides of the through hole, the length of the side of the positioning portion corresponding to the fixed block is larger than the length of the other sides of the positioning portion, and when the positioning portion is inserted into the through hole, the fixed block and the through groove are misaligned.

[0013] A stirring device is also provided, which also includes a bottom shell, which wraps the bottom plate, and the fixing seat is located at the center of the bottom shell and is detachably connected to the elastic fastener at the center of the bottom shell.

[0014] As a further improvement of the above technical solution, it also includes a gasket, which is installed between the fixing seat and the bottom shell, so that the fixing seat and the bottom shell are in elastic contact, thereby improving the connection stability between the fixing seat and the bottom shell.

[0015] The beneficial effects of the present invention are as follows: the knife group is fixed after passing through the chassis and rotating at a certain angle; after unlocking the knife group, the knife group cannot be directly detached from the container, but needs to be rotated at a certain angle before being taken out; therefore, when the user inverts the container to unlock the knife group, the knife group will not fall directly; the structure is simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 is an exploded schematic diagram of an anti-fall structure in one embodiment of the present invention;

[0018] Figure 2 is a top view of an anti-fall structure in one embodiment of the present invention;

[0019] Figure 3 It is a three-dimensional schematic diagram of a stirring device in one embodiment of the present invention. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that each technical feature and the overall technical solution of the present invention can be understood intuitively and figuratively, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0021] In the description of the present invention, if it involves a description of orientation, such as "upper", "lower", "front", "back", "left", "right", etc., the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. When a feature is referred to as "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0022] In the description of the present invention, if "several" is involved, it means one or more, if "multiple" is involved, it means more than two, if "greater than", "less than" or "exceed" is involved, it should be understood as not including the number itself, if "above", "below" or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In addition, unless otherwise defined, the technical terms and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art. The terms used in the present invention are only for describing specific embodiments, not for limiting the present invention.

[0024] In the embodiment provided by the present invention, a structure for preventing the knife group from falling during disassembly is applied to a blender, and the blending knife group is installed at the bottom of a container, with the blade of the knife group remaining in the container and the fixed portion of the knife group passing through the container and fixed outside the container. By means of the structure for preventing the knife group from falling during disassembly (hereinafter referred to as the anti-fall structure), restrictions are added to the installation and unlocking of the knife group, so that the fixed portion is rotated through a certain angle when the knife group is installed, and the knife group also needs to be rotated through a certain angle to be unlocked when unlocking, thereby realizing the anti-fall function.

[0025] Reference Figure 1, shows an explosion schematic diagram of an anti-fall structure in an embodiment of the present invention, the mixing knife group 1 includes a blade 11, a positioning portion 12 and a fixing portion 13. In actual application, the blade 11 is always located inside the container, and the fixing portion 13 fixes the blade 11 from the outside of the container, so that the blade 11 is stabilized at a certain position at the bottom of the container when mixing.

[0026] The chassis 2 is the bottom of the container after the main structure is omitted. There is a step surface 21 in the center of the chassis 2, and its function is to accommodate the fixing part 13 to ensure that the bottom of the container is flat after assembly. There is a through hole 22 in the center of the step surface 21. The shape of the through hole 22 is the same as that of the positioning part 12, both of which are hexagonal here. The positioning part 12 of the mixing knife group 1 is inserted into the through hole 22. When inserting, it is necessary to ensure that the fixing block 131 on the fixing part 13 just passes through the through groove 221 on the through hole 22. It is worth mentioning that the length of the side with the through groove 221 on the through hole 22 (hereinafter referred to as the short side of the through hole 22) is shorter than the length of the other sides of the through hole 22 (hereinafter referred to as the long side of the through hole 22), but the length of the side of the positioning part 12 facing the fixing block 131 on the fixing part 13 (hereinafter referred to as the long side of the positioning part 12) is longer than the length of the positioning part. The length of the remaining sides of 12 (hereinafter referred to as the short sides of the positioning portion 12), when the fixing portion 13 passes through the through hole 22 through the cooperation of the fixing block 131 and the through slot 221, the long side of the positioning portion 12 is pressed against the short side of the through hole 22, and the positioning portion 12 cannot be inserted into the through hole 22 at this time. Only when the positioning portion 12 is rotated by a certain angle, the short side of the positioning portion 12 faces the short side of the through hole 22, and the long side of the positioning portion 12 faces the long side of the through hole 22, and then the positioning portion 12 can be completely inserted into the fixing portion 13 to achieve positioning. Such a configuration ensures that when the positioning portion 12 is fully inserted into the through hole 22, the fixing block 131 on the fixing portion 13 and the through groove 221 on the through hole 22 are staggered with each other. When the mixing knife group 1 is detached from the through hole 22, the misalignment of the fixing block 131 and the through groove 221 prevents the mixing knife group 1 from directly detaching from the through hole 22, but requires further rotation by a certain angle so that the fixing block 131 and the through groove 221 are aligned with each other.

[0027] After the long and short sides of the positioning portion 12 and the through hole 22 are aligned with each other, the mixing knife group 1 is successfully inserted into the interior of the chassis 2. At this time, the positioning portion 12 cannot rotate circumferentially relative to the through hole 22. Therefore, the mixing knife group 1 only has the degree of freedom perpendicular to the chassis 2 that is not restricted, that is, the mixing knife group 1 can still move axially.

[0028] Therefore, a fixing seat 3 is required, and the inside of the fixing seat 3 is convex inward to form a limiting portion 31, and the limiting portion 31 has a slope surface and a blocking surface. During actual assembly, the limiting portion 31 rotates circumferentially, so that the fixing block 131 on the fixing portion 13 moves relative to the limiting portion 31 along the slope surface, and finally reaches the blocking surface. At this time, the mixing knife group 1 completely abuts against the chassis 2, and the degree of freedom in the direction perpendicular to the chassis 2 is limited by the limiting portion 31. In this way, the mixing knife group 1 is completely constrained.

[0029] In order to prevent the mixing knife set from falling, the projection of the upper limit portion 31 of the fixing seat 3 on the chassis 2 does not overlap with the through groove 221. When the fixing block 131 detached from the limiting portion 31 of the fixing seat 3 falls to the chassis 2, the fixing block 131 will not fall directly through the through groove 221, but will be blocked and stopped by the step surface 21. The mixing knife set 1 can be completely taken out only after the knife set is rotated again to align the fixing block 131 with the through groove 221.

[0030] Reference Figure 2 , shows a top view of the anti-drop structure in one embodiment of the present invention. From this figure, it can be more intuitively seen that the final installation position of the fixing block 131 does not coincide with the through groove 221 at this viewing angle. At this time, the fixing block 131 has been supported by the limiting portion 31 on the fixing seat 3, and the mixing knife group has been assembled.

[0031] In order to ensure that the relative position of the limiting portion 31 and the chassis 2 (that is, the groove 211 ) remains unchanged, the installation of the fixing base 3 is described below.

[0032] Reference Figure 3 , shows a three-dimensional schematic diagram of a stirring device in an embodiment of the present invention. In the stirring device provided in this embodiment, the outer side of the chassis 2 is the bottom shell 6 of the stirring device, and the fixing seat 3 is installed in the central part of the bottom shell 6. There are several elastic fasteners 61 in the central part of the bottom shell 6. The elastic fasteners 61 are snap-connected with several grooves 32 on the fixing seat 3 to ensure that the relative position of the limiting portion 31 and the bottom shell 6 remains unchanged.

[0033] Furthermore, a gasket 4 is provided between the fixing seat 3 and the bottom shell 6 . The gasket 4 is a wave gasket, and its function is to make the fixing seat 3 and the bottom shell 6 have elastic contact, thereby improving the connection stability between the fixing seat 3 and the bottom shell 6 .

[0034] To sum up, the fixing block 131 on the fixing part 13 of the mixing knife group passes through the through groove 221 of the through hole 22 on the chassis, and then the fixing part 13 rotates a certain angle, the positioning part 12 is inserted into the through hole 22 to achieve positioning, and the limiting part 31 of the fixing seat 3 limits the fixing block 131, thereby limiting the entire mixing knife group.

[0035] In order to ensure that the fixing seat can pass through the through hole and the positioning part 12 can be inserted into the through hole to achieve positioning, the diameter of the fixing part 13 (excluding the protruding fixing block 131) is less than or equal to the diameter of the fixing part 12, and the diameter of the fixing part 12 is equal to the diameter of the through hole 22. In the case of a non-cylindrical structure, the diameter here is the distance from the outermost surface to the rotation center under the same vertical plane section of the positioning part, the fixing part, and the through hole in the facing state. In other words, the projection of the positioning part 12 on the chassis 2 is basically coincident with the through hole 22 or slightly smaller than the through hole 22, and the distance from the outer side of the projection of the positioning part 12 on the chassis 2 to the projection center is greater than the distance from the projection of the fixing part 13 on the chassis 2 to the projection center.

[0036] In other embodiments of the present invention, the shapes of the positioning portion 12 and the through hole 22 may vary, and are preferably non-equilateral polygons.

[0037] For the stirring device provided in the embodiment of the present invention, when the user holds the inverted container with one hand and unlocks the stirring knife group with the other hand, the stirring knife group will loosen after being unlocked, but will not fall. At this time, the user keeps the hand holding the container still, and reaches into the container with the other hand to rotate the stirring knife group to a certain angle before taking out the stirring knife group. At this time, the stirring knife group has been held and there is no risk of falling, thereby preventing the safety hazard of the knife group falling and being damaged or falling and injuring people.

[0038] The above is a specific description of the preferred implementation of the present invention, but the present invention is not limited to the embodiments, and technicians in the relevant field can make various equivalent modifications or substitutions without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A structure for preventing a knife set from falling during disassembly, characterized in that: The utility model comprises a knife group, a chassis and a fixing seat, wherein the knife group comprises blades and a fixing part, the fixing part passes through a through hole of the chassis and rotates to a preset angle, the fixing part reaching the preset angle can abut against the chassis to limit the knife group from being separated from the chassis, and the fixing part is fixed on the fixing seat; The knife assembly further includes a positioning portion, the positioning portion is located between the fixing portion and the blade, the positioning portion has the same shape as the through hole, and the positioning portion is inserted into the through hole to achieve positioning; The cross section of the positioning portion is a polygon; The through hole includes a plurality of through slots, and the fixing portion is provided with a plurality of fixing blocks, the through slots correspond to the fixing blocks one by one, and the fixing blocks pass through the through slots to enable the fixing portion to pass through the through hole; The length of the side of the through hole with the through groove is shorter than the length of the other sides of the through hole, the length of the side of the positioning portion corresponding to the fixing block is longer than the length of the other sides of the positioning portion, and when the positioning portion is inserted into the through hole, the fixing block and the through hole are misaligned; The positioning portion can abut against the inner wall of the through hole to limit the knife group from rotating in the circumferential direction, and the fixing portion can pass through the through hole; A limiting portion is provided inside the fixing seat, and the limiting portion includes a blocking surface and a ramp surface. The limiting portion rotates circumferentially to cause the fixing block to move along the ramp surface and finally reach the blocking surface, thereby limiting the axial displacement of the tool assembly.

2. The structure for preventing the knife set from falling during disassembly according to claim 1, characterized in that: The chassis also includes a step surface, the through hole is located at the center of the step surface, and the cavity formed by the step surface and the inner wall of the chassis around the step surface accommodates the fixing part and the fixing seat.

3. The structure for preventing a knife set from falling during disassembly according to claim 1, characterized in that: The cross section of the positioning portion is hexagonal.

4. A stirring device, characterized in that: It includes the structure for preventing the knife assembly from falling during disassembly as described in any one of claims 1 to 3, and also includes a bottom shell, which wraps the chassis, and the fixing seat is located at the center of the bottom shell and is detachably connected to the elastic fastener at the center of the bottom shell.

5. The stirring device according to claim 4, characterized in that: It also includes a gasket, which is installed between the fixing seat and the bottom shell, so that the fixing seat and the bottom shell are in elastic contact, thereby improving the connection stability between the fixing seat and the bottom shell.

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