Speed reducer and food processor

Abstract

The utility model discloses a speed reducer and a food processer, and relates to the technical field of household appliances, the speed reducer comprises a box body composed of an upper shell and a lower shell which are detachably connected, one end of an inner cavity of the box body is rotatably provided with a primary speed reducing mechanism, and the primary speed reducing mechanism is in transmission connection with the box body; a second-stage speed reducing mechanism is rotationally arranged at the other end of the inner cavity of the box body and is in transmission connection with the first-stage speed reducing mechanism; an output shaft is fixed at one end of the secondary speed reducing mechanism and penetrates through the box body, and a sealing mechanism is arranged between the box body and the output shaft. According to the utility model, the output rotating speed is effectively reduced and the torque is increased through the two-stage speed reduction structure, and meanwhile, the sealing structure is arranged to prevent juice and scraps from entering the speed reducer, so that the problems of poor food material processing effect, large equipment loss and poor sealing performance of the existing food processor are solved.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a speed reducer and a food processor. Background Technology

[0002] In the field of household kitchen appliances, food processors, which integrate multiple functions such as mincing meat, shredding, slicing, peeling garlic, kneading dough, and mixing, are highly favored by users.

[0003] However, existing food processors have significant drawbacks that negatively impact the user experience. To reduce costs, many food processors on the market use reducers with only a single-stage reduction mechanism, or even none at all. This design reveals significant flaws when dealing with tasks requiring high torque, such as mincing meat or kneading dough. Due to the lack of sufficient reduction stages, the high motor speed cannot be effectively reduced, causing the blades to rotate too fast and fail to process ingredients into the appropriate form. For example, the multi-functional food processor disclosed in patent CN202426344U includes a base and several food processing devices, each consisting of a blade holder and a processing cup. The blade holder is connected to the lower end of the processing cup and can be alternatively connected to the upper end of the base, with a motor driving the blade holder inside the base. In actual use, it was found that this food processor lacks a suitable multi-stage reduction structure, resulting in the meat grinder's speed being almost identical to the motor speed. The high-speed rotating blades instantly pulverize meat into powder, resulting in overly fine minced meat that lacks texture and severely affects the taste after cooking. Meanwhile, food processors with only a single-stage reduction gear, or even some products without a reducer, are prone to jamming and uneven mixing when processing tough ingredients due to insufficient torque. Users have to divide the ingredients into multiple portions and process them separately, which not only prolongs the processing time but also increases the load on the motor and accelerates the wear of the blades.

[0004] In addition, the existing food processor reducer has a 0.3 to 0.5 mm clearance between the output shaft and the housing, which makes it easy for juice and debris to enter the reducer during use, causing adverse effects on the reducer.

[0005] Therefore, a speed reducer and a food processor need to be developed to address the aforementioned shortcomings. Utility Model Content

[0006] The purpose of this invention is to provide a speed reducer and a food processor that effectively reduces output speed and increases torque through a two-stage speed reduction structure. At the same time, a sealing structure is set to prevent juice and debris from entering the speed reducer, thus solving the problems of poor food processing effect, high equipment wear and tear, and poor sealing in existing food processors.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A speed reducer includes a housing composed of a detachably connected upper housing and a lower housing. A primary speed reduction mechanism is rotatably disposed at one end of the inner cavity of the housing and is drivenly connected to the housing. A secondary speed reduction mechanism is rotatably disposed at the other end of the inner cavity of the housing and is drivenly connected to the primary speed reduction mechanism. An output shaft is fixed at one end of the secondary speed reduction mechanism, and the output shaft passes through the housing. A sealing mechanism is provided between the housing and the output shaft.

[0009] Optionally, the primary reduction mechanism includes a planetary carrier whose two ends are rotatably connected to the upper housing and the lower housing, respectively. Multiple planetary gears are rotatably connected to the planetary carrier, and the planetary gears mesh with the upper housing. A drive gear is integrally formed at one end of the planetary carrier near the lower housing, and the drive gear meshes with the secondary reduction mechanism.

[0010] Optionally, the secondary reduction mechanism includes a driven gear rotatably disposed between the upper housing and the lower housing, the driven gear meshing with the drive gear, an output shaft integrally formed at the end of the driven gear away from the upper housing, the output shaft passing through a positioning tube integrally formed at one end of the lower housing, and a snap-fit ​​connector for engaging with a cutting tool fixed inside the end of the output shaft away from the driven gear.

[0011] Optionally, the sealing mechanism includes a sealing ring, and an annular groove is provided on the inner wall of the connection between the positioning tube and the lower housing. The sealing ring is sleeved on the output shaft and engages with the annular groove.

[0012] Optionally, the positioning tube has an opening, and a rubber plug is provided inside the opening which communicates with the annular groove.

[0013] Optionally, a mounting sleeve is integrally formed on the bottom wall of the lower housing, and a sealed bearing is interference-fitted into the mounting sleeve, with the interference fit penetrating the inner ring of the sealed bearing.

[0014] A food processor comprising any of the speed reducers described in any one of the claims.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] This invention adopts a two-stage reduction structure, which effectively reduces the high speed of the motor and significantly increases the output torque through planetary gear transmission and gear meshing transmission. At the same time, it avoids the problems of jamming and uneven mixing caused by insufficient torque, improves processing efficiency, reduces the load and wear of the motor and cutting tools, and extends the service life of the equipment.

[0017] The sealing mechanism effectively prevents juices and debris from entering the reducer, protecting the internal parts, ensuring the normal and stable operation of the reducer, and reducing the probability of failure caused by impurities. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention from another angle;

[0021] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the present invention from another angle;

[0023] Figure 5 This is a partial cross-sectional view of the lower shell of this utility model;

[0024] Figure 6 This is a three-dimensional structural diagram of the upper shell of this utility model;

[0025] Figure 7 This is a schematic diagram of the lower shell structure with a through opening of this utility model.

[0026] Explanation of reference numerals in the attached drawings: 100, upper housing; 200, lower housing; 210, annular groove; 220, positioning tube; 221, through port; 230, mounting sleeve; 300, output shaft; 310, snap-fit ​​connector; 400, planetary carrier; 500, planetary gear; 600, drive gear; 700, driven gear; 800, sealing ring; 900, sealed bearing. Detailed Implementation

[0027] The core of this utility model is to provide a speed reducer and a food processor. Through a two-stage speed reduction structure, the output speed is effectively reduced and the torque is increased. At the same time, a sealing structure is set to prevent juice and debris from entering the inside of the speed reducer, thus solving the problems of poor food processing effect, high equipment wear and tear, and poor sealing of existing food processors.

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "setting", "installing", "connecting", "joining", "fixing", "sleeving", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In a specific embodiment of this utility model, a box body is included, consisting of a detachably connected upper shell 100 and a lower shell 200. A primary reduction mechanism is rotatably provided at one end of the inner cavity of the box body, and the primary reduction mechanism is drivenly connected to the box body. A secondary reduction mechanism is rotatably provided at the other end of the inner cavity of the box body, and the secondary reduction mechanism is drivenly connected to the primary reduction mechanism. An output shaft 300 is fixed at one end of the secondary reduction mechanism, and the output shaft 300 passes through the box body. A sealing mechanism is provided between the box body and the output shaft 300.

[0032] In a specific embodiment of this utility model, the first-stage reduction mechanism includes a planetary carrier 400 whose two ends are rotatably connected to the upper housing 100 and the lower housing 200, respectively. A plurality of planetary gears 500 are rotatably connected on the planetary carrier 400, and the planetary gears 500 mesh with the upper housing 100. A drive gear 600 is integrally formed at one end of the planetary carrier 400 near the lower housing 200, and the drive gear 600 meshes with the second-stage reduction mechanism.

[0033] In a specific embodiment of this utility model, the two-stage reduction mechanism includes a driven gear 700 rotatably disposed between the upper housing 100 and the lower housing 200. The driven gear 700 meshes with a drive gear 600, and the speed ratio between the drive gear 600 and the driven gear 700 is 3-1.5:1. An output shaft 300 is integrally formed at the end of the driven gear 700 away from the upper housing 100. The output shaft 300 passes through a positioning tube 220 integrally formed at one end of the lower housing 200. A snap-fit ​​connector 310 for engaging with a cutting tool is fixed inside the end of the output shaft 300 away from the driven gear 700.

[0034] In a specific embodiment of this utility model, the sealing mechanism includes a sealing ring 800, and an annular groove 210 is provided on the inner wall of the connection between the positioning tube 220 and the lower housing 200. The sealing ring 800 is sleeved on the output shaft 300 and engaged with the annular groove 210.

[0035] In a specific embodiment of this utility model, the positioning tube 220 has a through-hole 221, which communicates with the annular groove 210, and a rubber plug is provided inside the through-hole 221.

[0036] When cleaning or replacing the seal 800 of the reducer, the rubber plug can be picked out with a sewing needle, and then the tail of the sewing needle can be inserted into the through 221. The tail of the sewing needle can be used to push the seal 800, thereby causing the seal 800 to bend and deform locally and disengage from the annular groove 210. At this time, the deformed area of ​​the seal 800 can be pushed with fingers to easily remove the seal 800.

[0037] In one specific embodiment of this utility model, an mounting sleeve 230 is integrally formed on the bottom wall of the lower housing 200. A sealed bearing 900 is interference-fitted into the mounting sleeve 230, and the output shaft 300 interference-fits through the inner ring of the sealed bearing 900. The installation of the sealed bearing 900 can improve the stability of the driven gear 700 and the output shaft 300, effectively reducing the possibility of shaking during the operation of the output shaft 300 and the driven gear 700, thereby stabilizing the output speed of the output shaft 300 and reducing the collision friction and noise between the output shaft 300 and the housing.

[0038] The working principle of this utility model, a speed reducer and a food processor, is as follows: When the food processor is working, the motor outputs power. The gear (sun gear) on the motor output shaft meshes with the planetary gear 500, which in turn meshes with the upper housing 100. The planetary gear 500 drives the planetary carrier 400 to rotate, achieving primary speed reduction. The drive gear 600 on the planetary carrier 400 transmits power to the driven gear 700 of the secondary speed reduction mechanism. The meshing of the drive gear 600 and the driven gear 700 further reduces the speed, and finally, the rotational speed and torque output by the output shaft 300 drive the blades to rotate. During this process, the sealing ring 800 cooperates with the annular groove 210, and the sealing bearing 900 effectively prevents juice and debris from entering the speed reducer. At the same time, the sealing bearing 900 improves the stability of the driven gear 700 and the output shaft 300.

[0039] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably, and the embodiments can be combined with each other. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0040] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A speed reducer, characterized in that, The housing comprises a detachably connected upper housing (100) and lower housing (200). A primary reduction mechanism is rotatably mounted at one end of the inner cavity of the housing and is connected to the housing in a transmission manner. A secondary reduction mechanism is rotatably mounted at the other end of the inner cavity of the housing and is connected to the primary reduction mechanism in a transmission manner. An output shaft (300) is fixed at one end of the secondary reduction mechanism and passes through the housing. A sealing mechanism is provided between the housing and the output shaft (300).

2. The reducer according to claim 1, characterized in that: The primary reduction mechanism includes a planetary carrier (400) whose two ends are rotatably connected to the upper housing (100) and the lower housing (200) respectively. A plurality of planetary gears (500) are rotatably connected to the planetary carrier (400). The planetary gears (500) mesh with the upper housing (100). A drive gear (600) is integrally formed at one end of the planetary carrier (400) near the lower housing (200). The drive gear (600) meshes with the secondary reduction mechanism.

3. The reducer according to claim 2, characterized in that: The secondary reduction mechanism includes a driven gear (700) rotatably disposed between the upper housing (100) and the lower housing (200), the driven gear (700) meshing with the drive gear (600), the output shaft (300) integrally formed at the end of the driven gear (700) away from the upper housing (100), the output shaft (300) passing through a positioning tube (220) integrally formed at one end of the lower housing (200), and a snap-fit ​​connector (310) for engaging with a cutting tool is fixed inside the end of the output shaft (300) away from the driven gear (700).

4. The reducer according to claim 3, characterized in that: The sealing mechanism includes a sealing ring (800), and an annular groove (210) is provided on the inner wall of the connection between the positioning tube (220) and the lower housing (200). The sealing ring (800) is sleeved on the output shaft (300) and engaged with the annular groove (210).

5. The reducer according to claim 4, characterized in that: The positioning tube (220) has an opening (221) that communicates with the annular groove (210), and a rubber plug is provided inside the opening (221).

6. The reducer according to claim 3, characterized in that: An installation sleeve (230) is integrally formed on the bottom wall of the lower housing (200). A sealed bearing (900) is installed in the installation sleeve (230) with an interference fit. The output shaft (300) is interference fitted through the inner ring of the sealed bearing (900).

7. A food processor, characterized in that: Includes the speed reducer as described in any one of claims 1 to 6.

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