A stirring and cleaning component, an appliance and a rice cooker

Abstract

The present invention discloses a stirring and cleaning assembly, comprising a cover body; a driving mechanism is provided in the cover body, and the driving mechanism is at least connected to a group of stirrers in a transmission manner; the driving mechanism drives the stirrer to rotate around a horizontal axis to stir a solid-liquid mixture object, so that the solid to be cleaned and the liquid in the solid-liquid mixture object rub against each other to clean the solid. Also disclosed is an appliance, comprising a container with a accommodating cavity and a cover body assembly covered on the container, the cover body assembly comprising the above-mentioned stirring and cleaning assembly. An electric rice cooker, comprising a rice cooker body and a cooker cover covered on the rice cooker body, the cooker cover comprising the above-mentioned stirring and cleaning assembly. The high transmission ratio power mechanism of the present design is different from an ordinary conventional transmission mechanism, and the position of each component design is changed, thereby reducing the installation height while achieving a labor-saving mechanism placed in a small space.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical appliances, and particularly relates to a stirring and cleaning assembly, an appliance, and a rice cooker. Background Art

[0002] At present, the rice cooker is in the mature stage and requires technological transformation. According to the survey data of the Forward Industry Research Institute, the industrialization of smart home has emerged. Therefore, the future development direction of the rice cooker is automation. The first problem that an automatic rice cooker needs to solve is the problem of automatic rice washing and the problem that the rice washing is clean enough.

[0003] Generally, the inner pot is used as the rice washing container, and the rice washing device is placed on the inner cover above the inner pot. The main problem is that since the torque required for rice washing is large, if the transmission ratio of the transmission mechanism is small, the torque required for the motor is large, resulting in a large volume of the motor, which is not conducive to the miniaturized and delicate design of the product. And because the price of the motor is relatively expensive and the price is extremely vulnerable to the influence of the motor torque requirement, if the requirement for the motor is too high, the overall cost of the machine will be high; if the transmission ratio is large, although it can meet the torque requirement and the stirring and cleaning effect is good, however, it is restricted by the height of the pot lid. How to reduce the height, save space, and provide a large transmission ratio for labor saving is a major problem, which needs to be solved by the transmission mechanism of this design. Summary of the Invention

[0004] To solve the above problems in the prior art, the present invention provides a stirring and cleaning assembly, an appliance, and a rice cooker. The transmission mechanism integrates a stirrer, a rack, and a gear, and through special tooth engagement transmission, the position transformation of each component design can set a high-transmission-ratio power mechanism on the rice cooker cover with limited height.

[0005] To achieve the above object, the specific technical solutions of a stirring and cleaning assembly, an appliance, and a rice cooker of the present invention are as follows:

[0006] A stirring and cleaning assembly includes a cover body, a driving mechanism is provided in the cover body, and the driving mechanism is at least drivingly connected with a group of stirrers; the driving mechanism drives the stirrers to rotate around a horizontal axis to stir a solid-liquid mixture, so that the solids to be cleaned and the liquid in the solid-liquid mixture rub against each other to clean the solids.

[0007] Further, the driving mechanism provided in the upper cover body can generate power to rotate around the vertical axis; a conversion mechanism is provided in the lower cover body, and the conversion mechanism can convert the rotation mode around the vertical axis into a swinging rotation mode around the horizontal axis; one end of the driving mechanism is connected to the conversion mechanism, and the other end of the conversion mechanism is connected to a stirrer, so as to drive the stirrer to rotate and swing around the horizontal axis, and rub and clean the solids in the solid-liquid mixture to be cleaned.

[0008] Further, the driving mechanism includes a motor horizontally disposed in the upper cover body, a lead screw connected to the output shaft of the motor, a nut threadedly connected to the lead screw, and a first gear drivingly connected to the nut; the first gear is drivingly connected to the conversion mechanism by rotating around a vertical shaft.

[0009] Further, the conversion mechanism includes a second gear rotatable around a vertical shaft, and the second gear is drivingly connected to the first gear.

[0010] Further, the second gear and the first gear are engaged in an up-and-down manner. A second tooth is provided at the upper end of the second gear along the axial direction, and a first tooth is provided at the lower end of the first gear along the axial direction, and the first tooth and the second tooth are engaged.

[0011] Further, circumferential teeth provided on the side surface of the second gear in the radial direction are engaged with rack side teeth provided on the side surface of the rack, and rack bottom teeth are provided at the bottom of the rack. The rack bottom teeth are engaged with a third gear, and the third gear is drivingly connected to a stirrer to make the stirrer swing and stir around a horizontal axis.

[0012] Further, the number of racks engaged with the circumferential teeth of the second gear in the radial direction is at least two.

[0013] Further, there are two racks, and the racks are arranged in parallel on both sides of the second gear. Each rack is drivingly connected to a third gear, and the third gear is drivingly connected to a stirrer.

[0014] Further, the stirrer is a tubular hollow structure with an open end.

[0015] Further, the stirrer includes a horizontal tube sleeved with the third gear and a vertical tube bent and connected to the horizontal tube.

[0016] Further, an arc-shaped bent tube is further connected to the end of the vertical tube away from the horizontal tube.

[0017] Further, the cover body includes an upper cover body and a lower cover body detachably connected to each other; the driving mechanism is disposed in the upper cover body; the stirrer is disposed in the lower cover body.

[0018] An appliance includes a container with a containing cavity and a cover body assembly covering the container, and the cover body assembly includes the above-mentioned stirring and cleaning assembly.

[0019] An electric rice cooker includes a rice cooker body and a cooker lid covering the rice cooker body, and the cooker lid includes the above-mentioned stirring and cleaning assembly.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The mechanism adopted in this design can set up a power mechanism with a high transmission ratio in the rice cooker lid with limited height. The power mechanism with a high transmission ratio in this design is different from the ordinary conventional transmission mechanism. This transmission mechanism integrates a stirrer, a rack and a gear, and is driven through special tooth engagement. The position transformation of each component design reduces the installation height while realizing the transformation of the rotating shaft from a horizontal shaft to a vertical shaft, achieving a labor-saving mechanism in a small space. Description of the Drawings

[0022] Figure 1 Fig. is an exploded view of the structure of a stirring and cleaning component of the present invention;

[0023] Figure 2 Fig. is an assembly drawing of the structure of a stirring and cleaning component of the present invention;

[0024] Figure 3 Fig. is an internal structure diagram of a stirring and cleaning component of the present invention;

[0025] Figure 4 is Figure 3 front view of

[0026] Figure 5 is Figure 3 side view of

[0027] Figure 6 is Figure 3 top view of

[0028] Figure 7 is a schematic diagram of transmission ratio parameterization;

[0029] Figure 8 is a three-dimensional view of the rack;

[0030] Figure 9 is a three-dimensional view of the first gear;

[0031] Figure 10 is a three-dimensional view of the second gear;

[0032] Figure 11 is a plan view of the second gear.

[0033] Explanation of the reference numerals in the figures: upper cover body 1, lower cover body 2, stirring and cleaning device 3, motor 30, nut 31, lead screw 32, first gear 33, second gear 34, rack 35, rack side teeth 351, rack bottom teeth 352, third gear 36, central tube 37, stirrer 38, horizontal tube 381, vertical tube 382, arc-shaped elbow 383, motor base 39. Detailed Description of the Invention

[0034] In order to better understand the purpose, structure and function of the present invention, the following is combined with the attached Figures 1 - 11, a stirring and cleaning component, an appliance and an electric rice cooker of the present invention are further described in detail.

[0035] Although the fine mechanism in the prior art can also stir and wash rice, the difficulty in the mechanism layout itself is how to achieve a high transmission ratio mechanism design in a highly compact space. Because the cover body is generally thin, the vertical height space is limited. If the transmission mechanism stored in this space has a high transmission ratio requirement, it will inevitably lead to a higher vertical height. The common combination of transmission parts in the prior art cannot achieve both a high transmission ratio and a small space occupied by the transmission mechanism.

[0036] like Figure 2 The present invention is designed to provide a stirring and cleaning assembly. The entire device is mainly divided into an upper cover body 1 and a lower cover body 2. The transmission of the two components is carried out through meshing transmission by the tooth features on the first gear 33 and the second gear 34. The first gear 33 and the second gear 34 both have a guide bevel. When installing the upper and lower covers, there is no need to align the teeth, and the upper and lower covers can be installed quickly. Its main structure includes a cover body; a driving mechanism is provided in the cover body, and the driving mechanism is at least connected to a set of stirrers 38 in a transmission manner; the cover body can adopt a detachable structure, such as Figure 1 In this embodiment, an upper cover body 1 and a lower cover body 2 which are detachably connected to each other are taken as an example; the driving mechanism provided in the upper cover body 1 can generate power for rotation around the vertical axis; the lower cover body 2 is provided with a conversion mechanism, and the conversion mechanism can convert the rotation mode around the vertical axis into a swinging mode around the horizontal axis; the driving mechanism is connected to one end of the conversion mechanism, and the other end of the conversion mechanism is connected to an agitator 38, and the driving mechanism is at least connected to a group of agitators 38 in a transmission manner; the driving mechanism drives the conversion mechanism to move, and the conversion mechanism converts the vertical rotation into a rotation around the horizontal axis, thereby driving the agitator 38 to rotate and swing around the horizontal axis, and rubs and cleans the solids in the solid-liquid mixture to be cleaned. The motor 30 in the driving mechanism in this embodiment is controlled by a controller program to realize reciprocating motion, so that the agitator 38 can swing around the horizontal axis like a pendulum, causing the solids to rub in the liquid, thereby realizing the solids being cleaned by the liquid.

[0037] The specific internal structures of the driving mechanism and the conversion mechanism are as follows. The driving mechanism includes a motor 30 horizontally arranged in the upper cover 1, a lead screw 32 connected to the output shaft of the motor 30, a nut 31 threadedly connected to the lead screw 32, and a first gear 33 drivingly connected to the nut 31. The rotation of the output shaft drives the rotation of the lead screw 32, and the rotation of the lead screw 32 drives the linear motion of the nut 31. The motor 30 is connected and fixed through a motor base 39 provided on the upper cover 1. The motor 30 is connected to a controller, which can be installed on the cover or other parts. Through a program input into the controller, the motor 30 can be controlled to rotate in multiple ways, such as reciprocating motion, so as to drive the first gear 33 to rotate horizontally clockwise and counterclockwise alternately through the nut 31. The first gear 33 rotates around a vertical axis and is drivingly connected to the conversion mechanism. The conversion mechanism includes a second gear 34 that can rotate around the vertical axis, and the second gear 34 is drivingly connected to the first gear 33, and the second gear 34 will also rotate alternately. Preferably, the second gear 34 and the first gear 33 are meshed in an up-and-down manner, and the driving is more stable and firm, or friction drive is adopted, or as Figure 9 and 10 shown, the first gear 33 and the second gear 34 are fixedly connected and driven. A second tooth is provided at the upper end of the second gear 34 along the axial direction, and a first tooth is provided at the lower end of the first gear 33 along the axial direction. The first tooth and the second tooth are meshed, so that the central axes of the first gear 33 and the second gear 34 coincide, ensuring the coaxiality. When the first gear 33 rotates, the second gear 34 also rotates horizontally. The second gear 34 drives a rack 35, as Figure 8 shown, the rack 35 drives a third gear 36 on the stirrer 38, so that the stirrer 38 swings around a horizontal axis.

[0038] As Figure 7 shown, in this design, the preferred transmission ratio range is from 1:50 to 1:35. When the rotating shaft of the gear transmission is horizontal, if the transmission ratio is 1:50, it means D1 / D2 = 50, and the height of the mechanism will be very high. For the aesthetics of the product, the present invention designs a stirring and cleaning assembly for use on the rice cooker lid. The rice cooker lid needs to be thin, and the height of the mechanism needs to be low. In order to make the height of the mechanism low and match the accommodation space of the low-height lid, the direction of the rotating shaft of the mechanism transmission needs to be changed. The specific implementation manner of the conversion mechanism is that the stirrer 38, the rack 35, and the second gear 34 pass through Figure 3 shown in the cooperation, realizing the transformation of the rotating shaft from a horizontal axis to a vertical axis; Transmission operation: The program in the controller controls the operation of the motor 30, and the transmission is carried out in sequence through the lead screw 32, the nut 31, the first gear 33, the second gear 34, the rack 35, the rack 35, the third gear 36, and the stirrer 38.

[0039] The specific conversion structure is that the circumferential teeth provided on the radial side of the second gear 34 are engaged with the rack side teeth 351 provided on the side of the rack 35, and the rack bottom teeth 352 are provided at the bottom of the rack 35. The rack bottom teeth 352 are engaged with the third gear 36, and the third gear 36 is drivingly connected to the stirrer 38, so that the stirrer 38 swings and stirs around the horizontal axis. First, the first gear 33 and the second gear 34 rotate horizontally and drive each other. Then, by using the two tooth structures on the second gear 34 and the setting of the special rack 35, the third gear 36 is driven to rotate, and then the stirrer 38 is driven to rotate. At this time, the stirrer 38 rotates and stirs around the horizontal axis.

[0040] In order to improve the efficiency of stirring and washing rice, at least two racks 35 engaged with the circumferential teeth along the radial direction of the second gear 34 can be provided, so that multiple groups can stir together. On the other hand, in order to make the force balanced and the transmission more stable, it is preferably to provide two racks 35, and the racks 35 are arranged in parallel on both sides of the second gear 34. Each rack 35 is drivingly connected to the third gear 36, and the third gear 36 is drivingly connected to the stirrer 38 to drive the two stirrers 38 to rotate.

[0041] Further optimizing the design, the stirrer 38 is a tubular hollow structure with an open end. The stirrer 38 includes a horizontal tube 381 sleeved with the third gear 36 and a vertical tube 382 bent and connected to the horizontal tube 381. An arc-shaped bent tube 383 is further connected to the end of the vertical tube 382 away from the horizontal tube 381. When stirring water and rice for washing rice, air can be introduced into the water-rice mixture through the tubular hollow structure to generate a large number of bubbles; at the same time, the stirrer 38 with the air pipe structure rotates and sways, so that the bubbles rise at different positions to stir the water-rice mixture.

[0042] An appliance is proposed, which includes a container with a receiving cavity and a cover assembly covering the container. The cover assembly includes the above-mentioned stirring and cleaning assembly. The stirrer 38 extends into the container with the receiving cavity to stir and rub the objects inside. The container can be in a cylindrical shape or a trough shape.

[0043] A rice cooker is proposed, which includes a rice cooker body and a cooker lid covering the rice cooker body. The cooker lid includes the above-mentioned stirring and cleaning assembly, and a central tube 37 with an exhaust valve is further provided on the cooker lid. The rice cooker body can adopt a rice cooker in the prior art, and the stirring and cleaning assembly in the cooker lid is detachable, which is convenient for cleaning and installation. The whole rice washing device is divided into an upper cover body 1 and a lower cover body 2. The two components are meshed and driven through the tooth features on the first gear 33 and the second gear 34. Among them, the first gear 33 and the second gear 34 both have guiding chamfer angles, and there is no need to align the teeth when installing the upper and lower cover bodies 2, and it can be quickly installed. The disassembly of the rice washing mechanism of this design is shown in Figure 1 as shown; when installing, as shown in Figure 2As shown, it can be quickly installed.

[0044] For the transmission mechanism designed by the present invention, in the derivation process of the transmission ratio i, when the lead screw 32 rotates one circle, the number of rotation circles of the first gear 33 and the second gear 34 = p / (π*D1); when the second gear 34 rotates one circle, the number of rotation circles of the stirrer 38 = D2 / D3; therefore, when the lead screw 32 rotates one circle, the number of rotation circles of the stirrer 38 = p*D2 / (π*D1*D3);

[0045] For example, parameters: the pitch p of the lead screw 32 = 1.5 mm, the diameter D1 of the first gear 33 = 48 mm, the diameter D2 of the second gear 34 = 56 mm, and the diameter D3 of the third gear 36 on the stirrer 38 = 21 mm;

[0046] Therefore, the transmission ratio i = 1.5*56 / (3.14*48*21) = 0.02 = 1 / 50.

[0047] The transmission mechanism of this design has a high transmission ratio of 1:50, is labor-saving, and a small motor 30 (28 series motor) can be selected. As shown in the appendix Figure 2 As shown: The program controls the operation of the motor 30, which is transmitted successively through the lead screw 32, the nut 31, the first gear 33, the second gear 34 and the rack 35, driving the two stirrers 38 to rotate. While generating a high transmission ratio for rice washing, it can also reduce the height required for the transmission mechanism, achieving the technical effect of saving installation space, greatly improving the overall performance of the rice cooker and beautifying the delicate appearance.

[0048] It can be understood that the present invention is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present invention, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A stirring and cleaning assembly, comprising a cover body, characterized in that: A driving mechanism is provided in the cover body, and the driving mechanism is at least drivingly connected to a set of agitators (38); The driving mechanism drives the agitator (38) to rotate around a horizontal axis to stir the solid-liquid mixture, so that the solids to be cleaned and the liquid in the solid-liquid mixture rub against each other to clean the solids; The driving mechanism provided in the cover body can generate power to rotate around the vertical axis; A conversion mechanism is further provided in the cover body, and the conversion mechanism can convert the rotation mode around the vertical axis into a swinging rotation mode around the horizontal axis; One end of the driving mechanism is connected to the conversion mechanism, and the other end of the conversion mechanism is connected to an agitator (38), so as to drive the agitator (38) to rotate and swing around the horizontal axis, and rub and clean the solids in the solid-liquid mixture to be cleaned; The driving mechanism includes a motor (30) horizontally arranged in the cover body, a lead screw (32) connected to the output shaft of the motor (30), a nut (31) threadedly connected to the lead screw (32), and a first gear (33) drivingly connected to the nut (31); the first gear (33) is drivingly connected to the conversion mechanism by rotating around the vertical axis; The conversion mechanism includes a second gear (34) that can rotate around the vertical axis, and the second gear (34) is drivingly connected to the first gear (33); Circumferential teeth are further provided on the radial side surface of the second gear (34), the circumferential teeth are engaged with the rack side teeth (351) provided on the side surface of the rack (35), rack bottom teeth (352) are provided at the bottom of the rack (35), the rack bottom teeth (352) are engaged with a third gear (36), and the third gear (36) is drivingly connected to the agitator (38), so that the agitator (38) swings and stirs around the horizontal axis.

2. The stirring and cleaning assembly according to claim 1, wherein The second gear (34) and the first gear (33) are engaged in an up-and-down manner. Second teeth are provided at the upper end of the second gear (34) along the axial direction, and first teeth are provided at the lower end of the first gear (33) along the axial direction, and the first teeth and the second teeth are engaged.

3. The stirring and cleaning assembly according to claim 1, wherein The number of racks (35) engaged with the circumferential teeth in the radial direction of the second gear (34) is at least two.

4. The stirring and cleaning assembly according to claim 1, wherein There are two racks (35), and the racks (35) are arranged in parallel on both sides of the second gear (34). Each rack (35) is drivingly connected to a third gear (36), and the third gear (36) is drivingly connected to the agitator (38).

5. The stirring and cleaning assembly according to claim 1, characterized in that, The agitator (38) is a tubular hollow structure with an open end.

6. The stirring and cleaning assembly according to claim 5, characterized in that, The agitator (38) includes a horizontal pipe (381) sleeved with the third gear (36) and a vertical pipe (382) bent and connected to the horizontal pipe (381).

7. The stirring and cleaning assembly according to claim 6, wherein An arc-shaped bent pipe (383) is further connected to one end of the vertical pipe (382) away from the horizontal pipe (381).

8. The stirring and cleaning assembly according to claim 1, wherein, The cover body includes an upper cover body (1) and a lower cover body (2) that are detachably connected to each other; the driving mechanism is arranged in the upper cover body (1); the agitator (38) is arranged in the lower cover body (2).

9. An appliance, comprising a container with a receiving cavity and a cover assembly covering the container, characterized in that The cover body assembly includes the stirring and cleaning assembly according to any one of claims 1-8.

10. An electric rice cooker, comprising a rice cooker body and a cooker lid covered on the rice cooker body, characterized in that, The pot cover includes the stirring and cleaning assembly according to any one of claims 1-8.

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