Portable Blender

Abstract

To provide a portable blender which is easy to clean and safe to use. [Solution] The portable blender comprises a cup body 1, a tool holder and a blender base, within which a control panel 172, a motor 17 and a drive seat are arranged, the motor rotates the drive seat, the cup body is removably connected to the tool holder, the tool holder is removably connected to the blender base, the blender base is provided with a safety switch 18, the tool holder comprises a tool plate 5, a rotating shaft 6, a mixing blade 15 and a driven plate holder 7, a first through hole is provided in the tool plate, a first seal ring 10 is arranged on the tool plate, and a first protrusion is provided on the first seal ring, the first protrusion passes through the first through hole and is used to support the safety switch.

Description

[Technical field]

[0001] The present invention relates to the field of blender technology, and more particularly to portable blenders. [Background technology]

[0002] In daily life, it is often necessary to crush, mix, and squeeze juice from ingredients, so that portable blenders are gradually appearing on the market. Until now, they have been used as small electrical appliances in home kitchens, and are convenient to take outdoors. Portable blenders usually include a mixing container, a blade, and a blade drive mechanism in the blender base. The blades of existing portable blenders are usually permanently attached to the blender base, which makes cleaning inconvenient, and water flowing into the electrical components in the blender base during cleaning may cause safety hazards. In addition, most portable blenders are arranged with an ejector pin structure with a safety switch and a spring stop, which leads to a complicated structure and low production efficiency, as well as poor mixing effect and ice-crushing performance in terms of product performance. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention aims to overcome the shortcomings of the prior art by proposing a portable blender that is easy to clean, safe to use, and inexpensive to manufacture, while improving the mixing effect and ice-crushing performance. [Means for solving the problem]

[0004] The technical solution of the present invention is as follows: A portable blender comprising a cup body, a blade rest holder, and a blender base, a control panel, a motor, and a driving seat are disposed inside the blender base, and the motor rotates the driving seat, the cup body is detachably connected to the blade rest holder, the blade rest holder is detachably connected to the blender base, a safety switch is provided on the blender base, the blade rest holder comprises a blade plate, a rotating shaft, a mixing blade, and a driven plate holder, a first through hole is provided on the blade plate, a first seal ring is disposed on the blade plate, a first protrusion is provided on the first seal ring, the first protrusion passes through the first through hole, and the first protrusion is used to support the safety switch.

[0005] Furthermore, the stirring blade comprises a blade base and first and second cutting edge pieces extending outward from the periphery of the blade base and facing each other, an attachment hole is provided in the center of the blade base, and both cutting edge pieces are provided with cutting edges, the first cutting edge piece having a two-stage structure bent downward in an L-shape relative to the plane of the blade base, and the second cutting edge piece having a three-stage structure bent downward in a U-shape relative to the plane of the blade base.

[0006] Further, a second protrusion is provided on the cutter plate, the second protrusion is arranged adjacent to the first through hole, and a hollow sleeve is arranged on the first seal ring, and the second protrusion is fitted into the hollow sleeve.

[0007] Further, the middle portion of the cutter plate extends upwardly to form a mounting cavity, a second through hole is provided at the top of the mounting cavity, and a third protrusion is provided at the bottom of the mounting cavity, the third protrusion being adapted to be captured by a rotatable fastener on the blender base.

[0008] Further, the safety switch comprises a spring assembly and a switch, the switch being used to connect or disconnect a motor drive circuit, the spring assembly comprising a guide mass and a support spring, the cup body being mounted on the tool post support, and an open end of the cup body pushing the guide mass towards the switch by causing the first protrusion portion to overcome the elastic force of the support spring, thereby enabling the switch to connect the motor drive circuit.

[0009] Furthermore, the angle α through which the first section of the first cutting edge piece is bent downward with respect to the plane of the blade base is 45 to 80°, the angle β through which the second section of the first cutting edge piece is bent upward with respect to the first section of the first cutting edge piece is 20 to 40°; the angle γ through which the first section of the second cutting edge piece is bent downward with respect to the plane of the blade base is 45 to 80°, the angle θ through which the second section of the second cutting edge piece is bent upward with respect to the first section of the second cutting edge piece is 45 to 80°, and the angle ζ through which the third section of the second cutting edge piece is bent upward with respect to the second section of the second cutting edge piece is 60 to 85°. Effect of the Invention

[0010] The present invention has the following beneficial effects:

[0011] 1) The portable blender of this invention has a cup body, a blade holder and a blender base that are arranged independently, which makes it easy to remove and clean. A first seal ring with protrusions on both sides is arranged on the blade holder, and the protrusions on the lower side contact the safety switch, so that the cup body can only be attached to the blade holder and the protrusions press the safety switch, ensuring the safety of the blender.

[0012] 2) In addition, the second protrusion on the blade plate further ensures safety during use. There is no space between the second protrusion and the wall of the blade holder, so fingers cannot reach into the narrow space, preventing accidental touching of the switch. The second protrusion on the blade holder plays a role in stirring the turbulent flow, improving the stirring effect and food crushing performance.

[0013] 3) Since the hollow sleeve protrudes from the main body surface of the first seal ring, it is convenient for a user to grasp the hollow sleeve and remove the first seal ring from the tool rest holder for cleaning. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is a perspective view of the blender of the present invention; [Diagram 2] FIG. 2 is an exploded view of the blender of the present invention. [Diagram 3] FIG. 2 is a schematic diagram showing the front and back structure of the tool rest holder of the present invention. [Figure 4] 2 is a schematic diagram showing the front and back structures of the first seal ring of the present invention; FIG. [Diagram 5] FIG. 1 is a cross-sectional view of a portable blender of the present invention. [Figure 6] FIG. 2 is a schematic diagram of a safety switch structure of the blender base of the present invention; [Figure 7] FIG. 2 is a cross-sectional view of a first embodiment of the tool rest holder of the present invention. [Figure 8] FIG. 4 is a cross-sectional view of a second embodiment of the tool rest holder of the present invention. [Figure 9] FIG. 2 is a three-dimensional view of the stirring blade of the present invention. [Figure 10] FIG. 2 is a front view of the stirring blade of the present invention. [Figure 11] FIG. 11 is a schematic diagram of a mounting structure for a tool rest receiver in a second embodiment. [Figure 12] FIG. 11 is a cross-sectional view of a trigger structure of a safety switch according to a second embodiment. [Figure 13] 13A and 13B are a top view and an enlarged view of a local area of ​​the tool rest support in the second embodiment. [Figure 14] FIG. 11 is a bottom view of the tool rest support in the second embodiment. [Figure 15] 13 is a schematic diagram showing the structure of an opening / closing movable member in the second embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] We will then clearly and completely explain the technical solutions of this invention in conjunction with drawings. Example 1

[0016] As shown in Fig. 1-10, the portable blender includes a cup body 1, a blade holder 2, and a blender base 3, in which the cup body 1 is detachably connected to the blade holder 2, and the blade holder 2 is detachably connected to the blender base 3. These three parts have an independent and detachable structure, which makes it convenient for removal and safe cleaning after use.

[0017] The cup body 1 has openings at both ends, the upper end narrows and connects to the cup cap 4 with a screw thread, and the cup wall at the lower end is also provided with a screw thread and connects to the blade rest holder 2. The blade rest holder 2 includes a blade plate 5, a rotating shaft 6, and a driven plate holder 7. The blade plate 5 is provided with a first through hole 8 and a second protrusion 9. The blade plate 5 is fitted into the first seal ring 10. The first seal ring 10 has a hollow sleeve 12 and a solid first protrusion 11 arranged in opposite directions. The first protrusion 11 faces downward and passes snugly through the first through hole 8 of the blade plate 5. The hollow sleeve 12 faces upward and fits into the second protrusion 9 of the blade plate 5. The middle part of the blade plate 5 extends upward and recessed to form an installation cavity 13. A second through hole 14 is provided at the top of the installation cavity 13. The driven base support 7 is firmly fitted into the entrance of the mounting cavity 13. The edge of the blade plate 5 is rolled up to form a cylindrical wall surface 23. The cylindrical wall surface 23 has a strip-shaped protrusion distributed along the spiral direction. The strip-shaped protrusion is spirally connected to the thread of the cup body. A bearing 30 is firmly arranged in the middle of the rotating shaft 6, and the bearing 30 is fitted with a reinforcing sleeve 25. By firmly fitting the reinforcing sleeve 25 into the mounting cavity 13, the connection between the mounting cavity 13 and the rotating shaft 6 and the bearing 30 becomes more solid, and in addition, the strength of the entire structure is increased. The upper end of the rotating shaft 6 extends from the second through hole 14, fits a second seal ring 28, and is connected to the mixing blade 15. The lower end of the rotating shaft 6 is connected to the driven base support 7 by a screw thread. This connection method simplifies the structure of the tool rest holder 2 and makes the whole structure quite sturdy. A third protrusion 21 is provided at the bottom of the mounting cavity 13, and the third protrusion 21 is caught by a rotatable catch 24 on the blender base 3.

[0018] In another embodiment, a bearing 30 is firmly disposed in the middle of the rotating shaft 6, and a third seal ring 29 is disposed on the upper end of the bearing 30, which then fits the reinforcing sleeve 25. The reinforcing sleeve 25 is firmly fitted into the mounting cavity 13, which makes the connection between the mounting cavity 13 and the rotating shaft 6 and the bearing 30 more solid, and also increases the strength of the entire structure. The upper end of the rotating shaft 6 extends from the second through hole 14, fits the gasket 27, and then connects with the mixing blade 15.

[0019] The blender base 3 comprises a housing 16, a control panel 172, a motor 17, a safety switch 18 and a base 19 at the bottom of the blender base 3. The output end of the motor 17 protrudes into the housing 16, and a drive base support 20 is also disposed thereon. A recess is provided at the upper end of the drive base support 20, into which the fifth protrusion 22 at the lower end of the driven base support 7 fits. The safety switch 18 of the blender base 3 comprises a spring assembly and a switch 18c. When the spring assembly is pressed down under the action of external pressure, the switch 18c is turned on, connecting the motor drive circuit and allowing electricity to flow. When the external pressure is removed, the spring assembly is restored and the switch 18c is turned off, cutting off the motor drive circuit and disabling electricity to flow. Specifically, the spring assembly includes a guide mass 18a and a support spring 18b, and the cup body 1 is mounted on the tool rest receiver 2, and the open end of the cup body 1 allows the first protrusion 11 to overcome the elastic force of the support spring 18b, thereby pushing the guide mass 18a towards the switch 18c, which allows the switch 18c to connect the motor drive circuit. During use, when the tool rest receiver 2 is mounted on the blender base 3, the first protrusion 11 of the first seal ring 10 hits the safety switch 18, but does not exert enough pressure on it, so that the safety switch 18 remains in the OFF state and disconnects the motor drive circuit, and the motor cannot be operated even if the motor drive key is pressed at this time. When the cup body 1 is mounted in place on the tool rest receiver 2, its cup wall pushes the first seal ring 10 downward, which in turn transmits pressure to the safety switch 18, which turns off the safety switch 18 and connects the motor drive circuit, and the motor can be operated by pressing the motor drive button at this time. This design improves the safety of the blender. In addition, the second protrusion 9 of the blade plate 5 is located close to the wall of the blade plate, and the first through hole 8 is located between the second protrusion 9 and the cylindrical wall surface 23, so that fingers cannot reach into this space, and potential safety hazards due to accidental contact can be avoided. The second protrusion 9 of the blade plate 5 also plays a role in stirring turbulence, improving the stirring efficiency.

[0020] The mixing blade 15 includes a blade base 32, and a first cutting blade piece 34 and a second cutting blade piece 35 that extend outward from the periphery of the blade base 32 and face each other, and a mounting hole 33 is provided at the center of the blade base. The mixing blade 15 is attached to the rotation shaft of the blade holder of the blender via the mounting hole 33, so that the cutting blade pieces are rotated by the rotation of the rotation shaft. The two cutting blade pieces have different shapes and bending angles. The first cutting blade piece 34 has a two-stage structure bent downward in an L-shape with respect to the plane of the blade base 32. Specifically, the angle α at which the first stage 34a of the first cutting blade piece is bent downward with respect to the plane of the blade base 32 is 45 to 80°, and the angle β at which the second stage 34b of the first cutting blade piece is bent upward with respect to the first stage 34a of the first cutting blade piece is 20 to 40°. It can be seen that the first cutting blade piece 34 mainly plays a role in stirring and crushing ingredients that sink to the bottom of the stirring cup. The second cutting blade piece 35 has a three-stage structure bent downward in a U-shape with respect to the plane of the blade base 32. Specifically, the angle γ at which the first stage 35a of the second cutting blade piece is bent downward with respect to the plane of the blade base 32 is 45 to 80°, the angle θ at which the second stage 35b of the second cutting blade piece is bent upward with respect to the first stage 35a of the second cutting blade piece is 45 to 80°, and θ is equal to γ, and the angle ζ at which the third stage 35c of the second cutting blade piece is bent upward with respect to the second stage 35b of the second cutting blade piece is 60 to 85°. Since the third stage 35c of the second cutting blade piece 35 is a flat surface inclined upward, the second cutting blade piece 35 plays a role in stirring and crushing the ingredients, and in addition, forms a vortex when rotating, which allows the ingredients at the bottom to move upward, so that the ingredients are distributed more evenly and stirring is more thorough.

[0021] Preferably, in this embodiment, the angle α at which the first stage 34a of the first cutting edge piece is bent downward relative to the plane of the blade base 32 is 65°, the angle β at which the second stage 34b of the first cutting edge piece is bent upward relative to the first stage 34a of the first cutting edge piece is 30°; the angle γ at which the first stage 35a of the second cutting edge piece is bent downward relative to the plane of the blade base 32 is 65°, the angle θ at which the second stage 35b of the second cutting edge piece is bent upward relative to the first stage 35a of the second cutting edge piece is 65°, and the angle ζ at which the third stage 35c of the second cutting edge piece is bent upward relative to the second stage 35b of the second cutting edge piece is 80°.

[0022] Moreover, the first cutting edge 36 located on the first cutting blade 34 and the second cutting edge 37 located on the second cutting blade 35 are offset from each other and positioned on different sides. When these cutting blades rotate clockwise, the cutting edges face the ingredients and cut them. Also, by integrally molding the cutting blades and the blade base 32, the blade structure becomes more robust and less likely to break. Compared to existing blenders that usually use a blade structure consisting of two or more independent blades, the present invention has a simpler structure and is more robust.

[0023] In this technical solution, the mixing blade of the portable blender adopts an integrally molded single blade structure, and the cutting blades on both sides are bent into an L shape and a U shape respectively, which ensures the mixing efficiency and has the advantages of a simplified structure, which makes cleaning and maintenance convenient and extends the service life, improves the user experience, reduces the amount of ingredients used and saves costs.

[0024] As an improvement proposal, the present invention also proposes a cordless portable blender that places a lithium battery 171 in the base of the blender, which supplies operating power to the motor and can be used without a power line that transmits AC. Example 2

[0025] As shown in Figures 11-15, the first protrusion and the first seal ring are arranged separately, the first protrusion is an openable / closable movable member 50, the first through hole has a tank hole 81 and a pair of support plates 82, the pair of support plates 82 are located on opposite sides of the tank hole which resembles a rectangle, the tank hole 81 is sandwiched between the two support plates, the openable / closable movable member 50 has a partition plate 501 and a standing plate 502, the partition plate 501 is placed on the pair of support plates 82, and the standing plate 502 is inserted into the tank hole 501.

[0026] The walls of the two opposing tank holes are provided with position limiting blocks 83, and the vertical plate 502 is provided with drop prevention blocks 503 on both sides accordingly, which are located above the drop prevention blocks and limit the drop prevention blocks from being pulled out upward from the tank hole. The partition plate 501 is provided with a partition notch 504, which is used to avoid the position limiting block 83. The vertical plate 502 is provided with a wedge surface 505 on one side of the bottom, which is used to guide the vertical plate to pass over the position limiting block 83 and prevent the drop prevention block 503 from passing through the open / close tank and being located below the position limiting block 83.

[0027] The support spring 52 is disposed between the spring rest receiver 53 and the switch support rod 51. When the cup body leaves the tool rest receiver, if the opening edge of the cup body does not apply pressure to the first seal ring 10, the support spring 52 enables the opening / closing movable member 50 to be supported upward, and the switch support rod 51 no longer presses the safety switch, turning off the safety switch.

[0028] Although the embodiments of the present invention have been described and illustrated, those skilled in the art may make changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is limited by the claims and their equivalents. [Explanation of symbols]

[0029] 1-Cup body; 2-Tool holder; 3-Blender base; 4-Cup hat; 5-Cutting board; 6-axis of rotation; 7-driven pedestal; 8 - 1st through hole; 9 - second protrusion; 10 - 1st seal ring; 11-first protrusion; 12- hollow sleeves; 13-Mounting cavity; 14 - second through hole; 15-Stirring blade; 16-Housing; 17 - motor; 18-Safety switch; 18a - guiding mass; 18b - support spring; 18c - switch; 19-pedestal; 20-Driver stand; 21-third protrusion; 22-5th protrusion; 23-Cylindrical wall; 24-Rotary fastener; 25-Reinforced sleeve; 27 - gasket; 28 - second seal ring; 29-3rd seal ring; 30-bearings; 32-Vane base; 33-mounting holes; 34-first cutting blade piece; 34a - first stage of the first cutting edge piece; 34b - second stage of the first cutting edge piece; 35-second cutting blade piece; 35a - 1st stage of the second cutting edge piece; 35b - second stage of the second cutting edge piece; 35c - the third stage of the second cutting edge; 36 - 1st cutting edge; 37-second cutting edge; 171 - Lithium battery; 172-Control panel; 50-opening and closing movable parts; 51-Switch support rod; 52-support spring; 53-Spring support; 81-Cisterna; 82-support plate; 83-Position restriction mass; 501-Divider; 502-Standing board; 503-fall prevention mass; 504-Notch in partition; 505-Wedge surface of a vertical board.

Claims

1. A portable blender comprising a cup body, a blade rest receiver, and a blender base, a control panel, a motor, and a drive seat disposed inside the blender base, and the motor rotates the drive seat, the cup body removably connected to the blade rest receiver, the blade rest receiver removably connected to the blender base, a safety switch provided on the blender base, the blade rest receiver comprising a blade plate, a rotating shaft, a mixing blade, and a driven plate receiver, a first through hole provided on the blade plate, a first seal ring disposed on the blade plate, a first protrusion provided on the first seal ring, the first protrusion passing through the first through hole, and the first protrusion used to support the safety switch, A portable blender.

2. The stirring blade comprises a blade base, and first and second cutting blade pieces extending outward from the periphery of the blade base and facing each other, an attachment hole is provided in the center of the blade base, and each of these cutting blade pieces has a cutting edge, the first cutting blade piece has a two-stage structure bent downward in an L-shape with respect to the plane of the blade base, and the second cutting blade piece has a three-stage structure bent downward in a U-shape with respect to the plane of the blade base.

2. The portable blender of claim 1.

3. A second protrusion is provided on the cutter plate, the second protrusion is disposed adjacent to the first through hole, a hollow sleeve is disposed on the first seal ring, and the second protrusion is fitted into the hollow sleeve.

2. The portable blender of claim 1.

4. The middle portion of the blade plate extends upward to form a mounting cavity, a second through hole is provided at a top of the mounting cavity, and a third protrusion is provided at a bottom of the mounting cavity, the third protrusion being adapted to be captured by a rotatable fastener on the blender base.

4. The portable blender of claim 3.

5. the safety switch comprises a spring assembly and a switch, the switch being used to connect or disconnect a motor drive circuit, the spring assembly comprising a guide mass and a support spring, the cup body being mounted on the tool rest support, and an open end of the cup body pushing the guide mass toward the switch by causing the first protrusion to overcome the elastic force of the support spring, thereby enabling the switch to connect the motor drive circuit; 4. The portable blender of claim 3.

6. the angle α at which the first stage of the first cutting edge piece is bent downward relative to the plane of the blade base is 45-80°, the angle β at which the second stage of the first cutting edge piece is bent upward relative to the first stage of the first cutting edge piece is 20-40°; the angle γ at which the first stage of the second cutting edge piece is bent downward relative to the plane of the blade base is 45-80°, the angle θ at which the second stage of the second cutting edge piece is bent upward relative to the first stage of the second cutting edge piece is 45-80°, and the angle ζ at which the third stage of the second cutting edge piece is bent upward relative to the second stage of the second cutting edge piece is 60-85°; 6. The portable blender of claim 5.

7. 7. The portable blender of claim 6, wherein the edge of the blade plate is rolled up to form a cylindrical wall.

8. 10. The portable blender of claim 1, further comprising a battery disposed in said blender base, said battery providing operating power to said motor.

9. The first protrusion and the first seal ring are disposed separately, the first protrusion is an openable / closable member, the first through hole includes a tank hole and a support plate, the openable / closable member includes a partition plate and a standing plate, the partition plate is placed on the support plate, and the standing plate is inserted into the tank hole.

2. The portable blender of claim 1.

10. A position limiting block is provided on the wall of the tank hole, a fall prevention block is provided on the vertical plate, the position limiting block is located above the fall prevention block and limits the fall prevention block from being pulled out upward from the tank hole, and a notch is provided on the partition plate, and the notch is used to avoid the position limiting block.

10. The portable blender of claim 9.

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