A dual speed forward and reverse structure and a blender

Abstract

The utility model relates to a kind of double-speed forward-reverse structure and mixer, including its including base, drive motor being arranged in the inside of the base, the drive motor includes first drive shaft, and the planetary gear double-speed gear mechanism of rotation connection with the first drive shaft, the planetary gear double-speed gear mechanism includes gear box, multiple driven gears being arranged in the gear box in circumferential direction and driving gear being arranged between the multiple driven gears, the inside wall of the gear box is annular and is circumferentially provided with annular gear, multiple the driven gears are respectively engaged with the annular gear and the driving gear mesh connection.The double-speed forward-reverse structure and mixer disclosed in the utility model, motor shaft is integrally connected with motor and gearbox structure, tool holder does not need to accommodate any gear and other gear shifting structure again, the overall volume, weight of tool holder is sharply reduced, and it is easy to disassemble and clean.

Description

Technical Field

[0001] This utility model relates to the field of food mixers, and more particularly to a dual-speed forward and reverse rotation structure and mixer. Background Technology

[0002] In existing food blender technology, the conventional approach to achieve forward and reverse rotation of the mixing blades is to incorporate a gearbox mechanism in the blade holder, which switches the rotation direction of the two sets of blades. The bases of the forward and reverse mixing blades are integrated with the gearbox in a single unit. However, this blade structure is cumbersome to disassemble and reassemble on the mixing cup. The integrated base and gearbox create a concentrated weight, requiring cumbersome cleaning as the entire unit must be handled. Furthermore, the integrated gearbox base is prone to water entering the gearbox during cleaning, and cleaning water can easily seep into the gearbox cavity through gaps at the bottom of the cup, causing lubrication failure or gear corrosion, potentially damaging the gearbox. Therefore, it is necessary to propose a new technical solution to address the shortcomings of existing technology. Utility Model Content

[0003] This invention provides a dual-speed forward and reverse rotation structure and a mixer, aiming to solve at least one of the technical problems existing in the prior art.

[0004] The technical solution of this utility model is a dual-speed forward and reverse rotation structure, which includes a base, a drive motor disposed inside the base, the drive motor including a first drive shaft, and a planetary gear dual-speed transmission mechanism rotatably connected to the first drive shaft. The planetary gear dual-speed transmission mechanism includes a gearbox, a plurality of driven gears circumferentially disposed in the gearbox, and a driving gear disposed between the plurality of driven gears. The inner sidewall of the gearbox is annular and circumferentially disposed with an annular gear. The plurality of driven gears are respectively meshed with the annular gear and the driving gear. The planetary gear dual-speed transmission mechanism is disposed above the drive motor. The driving gear is sleeved on the first drive shaft. The end of the first drive shaft is disposed above the gearbox. The end of the first drive shaft is provided with a first direction connector. The top of the gearbox is provided with a second direction connector.

[0005] Furthermore, it also includes: a stirring blade mechanism, the stirring blade mechanism including a blade holder, a bearing component, a second drive shaft, a first blade assembly and a second blade assembly, the bearing component being sleeved inside the blade holder by an outer ring, the second drive shaft passing through the inner ring of the bearing component, the first blade assembly being fixedly connected to the top of the second drive shaft, the second blade assembly being fixedly connected to the top of the blade holder, wherein the bottom end of the second drive shaft is detachably connected to the first directional connector, and the bottom end of the blade holder is detachably connected to the second directional connector.

[0006] Furthermore, the first directional connector is disposed on the top of the base, and the second directional connector is disposed circumferentially around the periphery of the first directional connector.

[0007] Furthermore, the planetary gear dual-speed transmission mechanism includes a connecting column inserted into the driven gear, and the connecting column is rotatably connected to the bottom of the gearbox.

[0008] Furthermore, the top of the first directional connector is provided with a first recessed groove, the outer side wall of the second directional connector is provided with a plurality of protruding first blocks, and the bottom end of the second drive shaft is connected to a third connector, the shape of the third connector matching the shape of the first groove and the first blocks.

[0009] Furthermore, the outer wall of the second directional connector is provided with a plurality of protruding second locking blocks, and the bottom end of the tool holder is provided with an inwardly recessed second locking groove, the shape of the second locking groove matching the shape of the second directional connector and the second locking blocks.

[0010] Furthermore, the gearbox contains three driven gears arranged at equal intervals, and the driving gear is arranged between the three driven gears.

[0011] Furthermore, it also includes: a motor bracket, wherein the drive motor is disposed inside the motor bracket, the top of the motor bracket is fixedly connected to the inner wall of the top shell of the base by multiple bolts, the bottom of the motor bracket is fixedly connected to the inner wall of the bottom shell by multiple bolts, a first through hole is provided on the top shell of the base, the second directional connector extends at least partially out of the first through hole, and a gap is provided between the outer ring of the second directional connector and the inner ring of the first through hole.

[0012] A mixer comprising: a dual-speed forward and reverse rotation structure as described above.

[0013] The beneficial effects of this utility model include: Compared to existing mixers with built-in gearboxes or integrated base gearboxes, this dual-speed forward and reverse structure moves the dual-speed transmission function entirely to the motor end. The motor and gearbox structure are integrated through the motor shaft, eliminating the need for any transmission structure such as gears in the blade holder. This significantly reduces the overall size and weight of the blade holder, making disassembly and cleaning easier. At the same time, the gearbox is completely located in the sealed cavity of the base, preventing water from seeping in during cleaning and significantly improving reliability.

[0014] Furthermore, additional aspects and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. Attached Figure Description

[0015] Figure 1This is a longitudinal sectional view of the dual-speed forward and reverse rotation structure according to an embodiment of the present utility model.

[0016] Figure 2 This is a longitudinal sectional view of the stirring blade mechanism according to an embodiment of the present utility model.

[0017] Figure 3 This is a longitudinal sectional view of the dual-speed forward and reverse rotation structure and the mixer according to an embodiment of the present utility model.

[0018] Figure 4 This is a detailed schematic diagram of the planetary gear dual-speed transmission mechanism according to an embodiment of the present utility model.

[0019] Figure 5 This is a schematic diagram showing the internal details of the dual-speed forward and reverse rotation structure according to an embodiment of the present invention.

[0020] Figure 6 This is a general schematic diagram of the dual-speed forward and reverse rotation structure according to an embodiment of the present utility model. Detailed Implementation

[0021] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0022] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," "right," "top," and "bottom" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0023] Furthermore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and not for limiting the scope of the invention. The term "and / or" as used herein includes any combination of one or more of the associated listed items.

[0024] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various elements, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from one another. For example, without departing from the scope of this disclosure, a first element may also be referred to as a second element, and similarly, a second element may also be referred to as a first element.

[0025] Reference Figures 1 to 6As shown, in some embodiments, this utility model discloses a dual-speed forward and reverse rotation structure, which includes... Reference Figure 1 The base 100 shown has a drive motor 110 disposed inside it. The drive motor 110 includes a first drive shaft 111, and the drive motor and the first drive shaft are vertically fixed inside the base.

[0026] Continue to refer to Figures 1 to 6 The planetary gear dual-speed transmission mechanism 200 shown is rotatably connected to the first drive shaft 111. The first drive shaft 111 of the drive motor 110 extends upward and is sleeved with the drive gear 230.

[0027] Reference Figure 1 Combination Figure 4 The planetary gear dual-speed transmission mechanism 200 includes a gearbox 210, a plurality of driven gears 220 circumferentially arranged within the gearbox 210, and a driving gear 230 arranged between the plurality of driven gears 220. The inner wall of the gearbox 210 is annular and has an annular gear 2111 circumferentially arranged thereon. The plurality of driven gears 220 are respectively meshed with the annular gear 2111 and the driving gear 230. The driving gear 230 meshes simultaneously with the plurality of driven gears 220 and also meshes with the annular gear 2111 on the inner wall of the gearbox 210, forming a planetary gear dual-speed transmission mechanism with a planetary arrangement.

[0028] Continue to refer to Figure 1 Combination Figure 3 As shown, the planetary gear dual-speed transmission mechanism 200 is disposed above the drive motor 110, the drive gear 230 is sleeved on the first drive shaft 111, the end of the first drive shaft 111 is disposed above the gearbox 210, the end of the first drive shaft 111 is provided with a first direction connector 112, and the top of the gearbox 210 is provided with a second direction connector 211.

[0029] When the drive motor outputs a first speed and a first-direction power to the first directional connector via the first drive shaft, it drives the first set of blades of the mixing blade mechanism to rotate and perform mixing operations. Simultaneously, the first drive shaft sequentially engages a driving gear with multiple driven gears, and the gearbox, acting as a second speed and a second-direction power source, drives the second set of blades of the mixing blade mechanism to rotate and perform mixing operations. The second speed is less than the first speed, and the first and second directions are opposite. The output torque of the second set of blades driven by the power output end of the gearbox is greater than the output torque of the first set of blades, thus realizing the dual-speed forward and reverse rotation structure of the mixer.

[0030] When the drive motor rotates clockwise at high speed, the ring gear is engaged, and the gearbox acts as a planetary carrier to output at low speed in the opposite direction. When another speed is needed, the ring gear can be briefly released and the planetary carrier can be braked by electronic control, so that the speed ratio can be switched without stopping the motor, thus realizing the dual-speed output of this mixer structure.

[0031] Compared to existing mixers with built-in gearboxes or integrated base gearboxes, this dual-speed forward and reverse structure moves the dual-speed transmission function entirely to the motor end. The motor and gearbox structure are integrated through the motor shaft, eliminating the need for any transmission structure such as gears in the blade holder. This significantly reduces the overall size and weight of the blade holder, making disassembly and cleaning easier. At the same time, the gearbox is completely located in the sealed cavity of the base, preventing water from seeping in during cleaning and significantly improving reliability.

[0032] Reference Figure 2 The stirring blade mechanism 300 shown is coupled to the aforementioned dual-speed output end. The stirring blade mechanism 300 includes a blade holder 310, a bearing 320, a second drive shaft 330, a first blade assembly 340, and a second blade assembly 350. The bearing 320 is fitted inside the blade holder 310 via an outer ring. The second drive shaft 330 passes through the inner ring of the bearing 320. The first blade assembly 340 is fixedly connected to the top of the second drive shaft 330, and the second blade assembly 350 is fixedly connected to the top of the blade holder 310. The bottom end of the second drive shaft 330 is detachably connected to the first directional connector 112, and the bottom end of the blade holder 310 is detachably connected to the second directional connector 211. The second drive shaft 330 is rotatably supported within the blade holder 310 via a bearing 320, with the first blade assembly 340 fixedly connected to its top. The blade holder 310 is fixedly connected to the second directional connector 211 via a second slot 311, thus becoming an extension housing of the gearbox 210. Consequently, the first blade assembly 340 directly receives high-speed forward power from the first directional connector 112, while the second blade assembly 350 receives low-speed reverse power from the gearbox 210 along with the blade holder 310. The bulky mixing blade holder of existing mixers, which integrates two sets of blades into a single gearbox, is simplified: the blade holder and blades become lightweight, detachable components; during cleaning, only the blade holder and blades need to be rinsed, and water will not touch the gearbox at the motor end.

[0033] Continue to refer to Figure 1As shown, the first directional connector 112 is disposed on the top of the base 100, and the second directional connector 211 is arranged circumferentially around the first directional connector 112. The spatial positions of the first directional connector 112 and the second directional connector 211 have been optimized. The first directional connector 112 is located at the center of the top of the base 100, and the second directional connector 211 is arranged circumferentially around it, forming a coaxial double-layer output. This layout allows the tool holder 310 to connect to the base 100 with only one insertion, thus achieving dual-speed forward and reverse rotation function.

[0034] Reference Figure 4 As shown, the planetary gear dual-speed transmission mechanism 200 includes a connecting post 221 inserted into the driven gear 220, and the connecting post 221 is rotatably connected to the bottom of the gearbox 210. This further improves the coaxiality and load-bearing capacity of the planetary gear system. In the prior art, if the tool holder gear is subjected to uneven force for a long time, it is prone to uneven wear; in this embodiment, the force point is transferred to the gearbox 210, and the tool holder 310 only transmits torque, resulting in a significant reduction in wear.

[0035] Reference Figure 1 Combination Figure 3 As shown, the top of the first directional connector 112 is provided with a recessed first slot 113, and the outer wall of the second directional connector 211 is provided with multiple protruding first blocks 212. The bottom end of the second drive shaft 330 is connected to a third connector 331, the shape of which matches the shape of the first slot 113 and the first blocks 212. The outer wall of the second directional connector 211 is provided with multiple protruding second blocks 213. The bottom end of the tool holder 310 is provided with a recessed second slot 311, the shape of which matches the shape of the second directional connector 211 and the second blocks 213. The above structures respectively adopt a male-female plug-in structure of first slot 113 cooperating with first blocks 212 and second slot 311 cooperating with second blocks 213, realizing quick assembly and disassembly of the second drive shaft 330 and the tool holder 310. The connector is hidden within the mating surfaces of the base 100 and the tool holder 310, without increasing the exposed height and maintaining the overall clean appearance of the machine.

[0036] Reference Figure 4 As shown, three driven gears 220 are equally spaced inside the gearbox 210, and a driving gear 230 is arranged between the three driven gears 220. The three driven gears 220 are equally spaced to ensure balanced force on the planetary gear train and reduce noise.

[0037] Reference Figure 1 Combination Figure 3The motor bracket 400 shown has the drive motor 110 mounted inside it. The top of the motor bracket 400 is fixedly connected to the inner wall of the top shell of the base 100 by multiple bolts, and the bottom of the motor bracket 400 is fixedly connected to the inner wall of the bottom shell by multiple bolts. The top of the motor bracket 400 is secured to the top shell of the base, and the bottom is secured to the bottom shell by multiple bolts, forming a vibration damping structure. A first through hole 120 is provided on the top shell of the base 100. A second directional connector 211 extends at least partially out of the first through hole 120, and a gap 121 is provided between the outer ring of the second directional connector 211 and the inner ring of the first through hole 120. This gap provides the gearbox structure with a certain degree of vibration damping.

[0038] Reference Figure 3 As shown, this utility model also discloses a blender, which includes the dual-speed forward and reverse rotation structure described above. The user simply needs to gently place the blending cup with the blade holder 310 onto the base 100 and rotate it 30° clockwise to complete the installation via the snap-fit ​​mechanism. After startup, the first blade group 340 performs high-speed forward cutting, while the second blade group 350 performs low-speed reverse turbulence, allowing for fine blending of both soft and hard ingredients within 10 seconds. Disassembly is easy; the blade holder and base can be separated with a simple press and lift, and the entire machine is easy to clean without any hard-to-reach areas, achieving a lightweight, highly reliable, and easy-to-clean multi-speed forward and reverse rotation blending experience.

[0039] The above description is merely a preferred embodiment of this utility model. This utility model is not limited to the above-described embodiments. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this disclosure, as long as they achieve the same technical effect, should be included within the scope of protection of this disclosure and fall under the protection scope of this utility model. Within the protection scope of this utility model, the technical solutions and / or implementation methods can have various modifications and variations.

Claims

1. A dual-speed forward and reverse rotation structure, characterized in that, include Base (100) A drive motor (110) is disposed inside the base (100), the drive motor (110) including a first drive shaft (111). A planetary gear dual-speed transmission mechanism (200) is rotatably connected to the first drive shaft (111). The planetary gear dual-speed transmission mechanism (200) includes a gearbox (210), a plurality of driven gears (220) circumferentially arranged in the gearbox (210), and a driving gear (230) arranged between the plurality of driven gears (220). The inner sidewall of the gearbox (210) is annular and has an annular gear (2111) circumferentially arranged. The plurality of driven gears (220) are respectively meshed with the annular gear (2111) and the driving gear (230). The planetary gear dual-speed transmission mechanism (200) is located above the drive motor (110), the drive gear (230) is sleeved on the first drive shaft (111), the end of the first drive shaft (111) is located above the gearbox (210), the end of the first drive shaft (111) is provided with a first directional connector (112), and the top of the gearbox (210) is provided with a second directional connector (211). Also includes: A stirring blade mechanism (300) includes a blade holder (310), a bearing component (320), a second drive shaft (330), a first blade assembly (340), and a second blade assembly (350). The bearing component (320) is fitted inside the blade holder (310) via an outer ring. The second drive shaft (330) passes through the inner ring of the bearing component (320). The first blade assembly (340) is fixedly connected to the top of the second drive shaft (330), and the second blade assembly (350) is fixedly connected to the top of the blade holder (310). The bottom end of the second drive shaft (330) is detachably connected to the first direction connector (112), and the bottom end of the tool holder (310) is detachably connected to the second direction connector (211). The first directional connector (112) is disposed on the top of the base (100), and the second directional connector (211) is disposed circumferentially around the first directional connector (112). The planetary gear dual-speed transmission mechanism (200) includes a connecting post (221) inserted into the driven gear (220), and the connecting post (221) is rotatably connected to the bottom of the gearbox (210).

2. The dual-speed forward and reverse rotation structure according to claim 1, characterized in that, The top of the first directional connector (112) is provided with a first recessed groove (113), and the outer side wall of the second directional connector (211) is provided with a plurality of protruding first blocks (212). The bottom end of the second drive shaft (330) is connected to a third connector (331), the shape of which matches the shape of the first slot (113) and the first block (212).

3. The dual-speed forward and reverse rotation structure according to claim 1, characterized in that, The outer wall of the second directional connector (211) is provided with a plurality of protruding second locking blocks (213). The bottom end of the tool holder (310) is provided with an inwardly recessed second slot (311), the shape of which matches the shape of the second direction connector (211) and the second locking block (213).

4. The dual-speed forward and reverse rotation structure according to claim 1, characterized in that, The gearbox (210) has three driven gears (220) arranged at equal intervals, and the driving gear (230) is arranged between the three driven gears (220).

5. The dual-speed forward and reverse rotation structure according to claim 1, characterized in that, Also includes: A motor bracket (400) is provided, and the drive motor (110) is disposed inside the motor bracket (400). The top of the motor bracket (400) is fixedly connected to the inner wall of the top shell of the base (100) by multiple bolts, and the bottom of the motor bracket (400) is fixedly connected to the inner wall of the bottom shell by multiple bolts. The top shell of the base (100) has a first through hole (120), and the second directional connector (211) extends at least partially out of the first through hole (120). There is a gap (121) between the outer ring of the second directional connector (211) and the inner ring of the first through hole (120).

6. A mixer, characterized in that, include: The dual-speed forward and reverse rotation structure as described in any one of claims 1 to 5.

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