An outer rotor type waterproof structure and an outer rotor type device including the same

Abstract

The present application relates to an external rotor waterproof structure for improving the waterproof performance of external rotor equipment. The structure includes a waterproof component that covers at least the edge of the through hole on the body that leads out the rotating shaft. The waterproof component includes a waterproof ring, a waterproof ring, and a rotating shaft shell. The tight fit of the waterproof ring and the waterproof ring can greatly improve the waterproof performance. The friction between the waterproof ring and the waterproof ring is reduced to the possible mutual friction between the side walls through their interlocking, which has good wear resistance. Through the improvement, the rubber waterproof ring does not contact the blade, and it also avoids contact with the fluid during the operation of the equipment, thereby extending the life of the waterproof ring. Rotating shaft equipment including this waterproof structure, such as slicers and blenders, has good waterproof performance.

Description

Technical Field

[0001] The present application relates to the technical field of rotating shaft equipment, and in particular to an outer rotor waterproof structure and an outer rotor equipment comprising the same. Background Art

[0002] Currently, slicers, blenders, and other devices with external rotors often use metal waterproof rings for waterproofing. While these rings offer excellent wear resistance, metal's lack of elasticity can create gaps between the ring and the device body, resulting in poor waterproofing. Alternatively, rubber rings are used. These rings are fixed to the device's through-holes via a bite lip and are subject to external shaft pressure. This creates significant friction with the rotor hole or the device body during rotation, resulting in poor wear resistance. Regardless of the metal or rubber ring solution, splashing fluids can easily accumulate in the ring, reducing its service life due to the corrosive nature of the fluid.

[0003] The text of Japanese patent application JP2018503813 discloses a waterproof ring component that can be used on aircraft, providing a waterproof solution for the aircraft's outer rotor motor to prevent water droplets from entering the interior of the mechanical equipment.

[0004] However, unlike in the aircraft field, in slicers, blenders or other devices with external rotor output ends, it is often necessary to control or transmit the output rotor through a pulley or other side-mounted braking device, or to replace the external rotor head. Not only that, the structural difficulty of disassembling and assembling the rotor must also be considered.

[0005] Therefore, it is urgent to design an outer rotor type waterproof structure to improve the above problems. Summary of the Invention

[0006] In order to overcome the problems existing in the related art, the present application provides an outer rotor waterproof structure for enhancing the waterproof performance of the rotating shaft, including a waterproof component, which covers at least the edge of the fuselage through-hole on the fuselage through which the outer rotor rotating shaft is led out; the waterproof component includes a waterproof ring, a waterproof ring and a rotating shaft shell, the waterproof ring is installed around the fuselage through-hole, and a waterproof ring protrusion inner edge is provided on the inner circumference of the waterproof ring, the waterproof ring protrusion inner edge can abut the waterproof ring to limit the waterproof ring, the waterproof ring is sleeved on the rotating shaft shell, and the outer rotor rotating shaft is passed through the rotating shaft shell, so that the waterproof structure has the following characteristics: when the outer rotor rotating shaft rotates, the waterproof ring rotates with the rotating shaft shell, and the outer circumference of the waterproof ring and the inner circumference of the waterproof ring move relative to each other.

[0007] Preferably, a waterproof ring bottom groove is provided on the side of the waterproof ring facing the fuselage, and at least a waterproof ring outer edge and a waterproof ring inner edge are formed on both sides of the waterproof ring bottom groove. The bottom surface of the waterproof ring outer edge is against the inner edge of the waterproof ring protrusion, and the outer peripheral surface of the waterproof ring outer edge is attached to the inner peripheral surface of the waterproof ring.

[0008] Preferably, a waterproof ring fixing ring is sleeved on the inner side of the waterproof ring bottom groove.

[0009] Preferably, a waterproof ring side groove is provided on the inner circumferential surface of the inner edge of the waterproof ring, and two sides of the waterproof ring side groove are respectively fitted to the outer circumferential surface of the rotating shaft shell.

[0010] Preferably, at least a portion of the waterproof ring is embedded in the through hole of the fuselage, and the waterproof ring is turned outward on the outward side of the fuselage and covers at least a portion of the edge of the through hole of the fuselage.

[0011] Preferably, a waterproof ring fixing structure is provided on the outward-turned structure of the waterproof ring, and the waterproof ring fixing structure is used to fixedly connect the waterproof ring and the fuselage.

[0012] Preferably, the shaft housing is a cover structure, and a shaft hole and a plurality of shaft fixing holes are provided on the top surface of the cover structure for connecting an external shaft.

[0013] Preferably, the outer peripheral surface of the shaft housing is provided with an inclined surface and / or a step to guide the splashing fluid to a position away from the waterproof ring.

[0014] Preferably, the rotating shaft shell is a transmission pulley, the interior of the rotating shaft shell is fixedly connected to the rotating shaft, and the waterproof ring is arranged in the middle of the rotating shaft shell to form a first transmission part and a second transmission part at both ends of the rotating shaft shell respectively.

[0015] An outer rotor device comprises a motor, a control circuit and the waterproof structure as described in any one of the above items.

[0016] It should be understood that the above general description and the detailed description below are only exemplary and explanatory and do not limit the present application. The implementation of the solution of the present invention can greatly improve the waterproof performance through the tight fit of the waterproof ring and the waterproof ring. Through improvement, the waterproof ring can be made of rubber, plastic, plastic, metal and other materials, and the waterproof ring can also be made of rubber, plastic, plastic, metal and other materials. The friction between the waterproof ring and the waterproof ring is changed to the possible small side wall friction through the side wall of the fit, which has good wear resistance. By adjusting the position of the rotating shaft perpendicular to the surface where the through hole is located, the pressure of the waterproof ring against the inner edge of the waterproof ring protrusion can be adjusted to make the pressure as small as possible, thereby reducing the wear caused by the friction between the bottom of the waterproof ring and the inner edge of the waterproof ring protrusion. The waterproof ring and the waterproof ring are fitted together through a straight wall with a very small gap. Therefore, even if the waterproof ring and the waterproof ring move relative to each other, it is difficult for fluid to enter the interior of the fuselage. Moreover, as the waterproof ring rotates, it can further prevent fluid from seeping in through the gap. By adjusting the position of the rotating shaft relative to the through hole in the centrifugal direction, the waterproof ring sleeved on the rotating shaft shell can be made to not apply force or only apply a small force to the waterproof ring, so that when the waterproof ring rotates, there is almost no friction with the waterproof ring, so that the waterproof ring is almost in the air relative to the waterproof ring. Through the tight fit of the waterproof ring and the waterproof ring at this structural level, the waterproof performance can be greatly improved, and the friction between the waterproof ring and the waterproof ring is controlled to be small, so that it can work for a long time. When the outer rotor shaft rotates, the waterproof ring rotates with the rotating shaft shell, and the outer circumference of the waterproof ring and the inner circumference of the waterproof ring move relative to each other. The friction between the waterproof ring and the waterproof ring is circumvented by their fitting method. Compared with the solution in which the lip of the rubber waterproof ring is directly bitten and fixed to the fuselage, the cooperation between the waterproof ring and the waterproof ring in this solution makes the waterproof component have better wear resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0018] Figure 1 This is a schematic diagram of the entire structure of the embodiment of the present application;

[0019] Figure 2 This is a schematic diagram of a waterproof structure shown in an embodiment of the present application;

[0020] Figure 3 Schematic diagram of a waterproof ring shown in an embodiment of the present application;

[0021] Figure 4 This is another schematic diagram of a waterproof ring shown in an embodiment of the present application;

[0022] Figure 5 Schematic diagram of a waterproof ring shown in an embodiment of the present application;

[0023] Figure 6 Schematic diagram of a rotating shaft housing / pulley shown in an embodiment of the present application;

[0024] Figure 7 This is a schematic diagram of the installation of the waterproof ring and waterproof ring shown in the embodiment of the present application.

[0025] The meanings of the marks in the figure are as follows:

[0026]

[0027] DETAILED DESCRIPTION

[0028] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0029] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0030] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0032] Unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0033] An outer rotor waterproof structure 100, as shown in the accompanying drawings Figures 1 to 2 、 Figure 5 、 Figure 7As shown, it is used to enhance the waterproof performance of the shaft. The shaft and the fuselage 2 can be determined according to the actual outer rotor device model. The shaft is such as the transmission shaft 11 in the figure, which is used to externally connect the external transmission shaft 12, and can realize external shafts of different shapes and functions. In addition, it also includes a waterproof component 3, which at least covers the fuselage through hole 21 for leading the shaft out of the fuselage; the waterproof component includes a waterproof ring 31, a waterproof ring 32 and a shaft shell 33. The waterproof ring is installed at the edge of the fuselage through hole, and a waterproof ring protrusion inner edge 313 is provided on the inner circumference of the waterproof ring. The waterproof ring abuts the waterproof ring. The water ring has a raised inner edge and is sleeved onto the shaft housing. The shaft extends through the shaft housing. By adjusting the position of the shaft perpendicular to the surface of the through-hole, the pressure exerted by the waterproof ring on the raised inner edge of the waterproof ring can be adjusted to be as low as possible, thereby reducing wear caused by friction between the bottom of the waterproof ring and the raised inner edge of the waterproof ring. The waterproof ring and the waterproof ring are in contact with each other through a narrow gap between the straight walls. Therefore, even if the waterproof ring and the waterproof ring move relative to each other, fluid is unlikely to enter the interior of the device. Furthermore, as the waterproof ring rotates, fluid infiltration through the gap is further prevented. By adjusting the centrifugal position of the shaft relative to the through-hole, the waterproof ring sleeved on the shaft housing exerts no force or only a small force on the waterproof ring. As the waterproof ring rotates, there is virtually no friction between the waterproof ring and the waterproof ring, allowing the waterproof ring to be almost suspended in the air relative to the waterproof ring. This tight fit between the waterproof ring and the waterproof ring greatly improves waterproof performance, while the friction between the waterproof ring and the waterproof ring is kept to a minimum, enabling long-term operation. Through improvements, the waterproof ring can be made of materials such as rubber, plastic, or metal, and the waterproof ring can also be made of materials such as rubber, plastic, or metal. When the outer rotor shaft rotates, the waterproof ring rotates with the shaft housing, and the outer circumference of the waterproof ring and the inner circumference of the waterproof ring move relative to each other. The friction between the waterproof ring and the waterproof ring is reduced by their interlocking structure. Compared with solutions where the rubber waterproof ring lip is directly fixed to the fuselage, the cooperation between the waterproof ring and the waterproof ring in this solution makes the waterproof assembly more wear-resistant.

[0034] In a preferred embodiment, as shown in the accompanying drawings Figure 3 or Figure 4 As shown, the waterproof ring has a bottom groove 325 on the side facing the body. The groove is flanked by at least a waterproof outer edge 322 and a waterproof inner edge 321. The bottom surface of the outer edge abuts the inner edge of the waterproof ring protrusion, while the outer circumference of the outer edge abuts the inner circumference of the waterproof ring. The waterproof ring with the bottom groove can adapt by leveraging its own material's deformability, while also utilizing the space in the groove for cushioning. This allows the ring to maintain a good degree of tightness when properly sized for the rotating shaft housing, allowing it to be securely fixed to the rotating shaft housing, achieving a better waterproofing effect.

[0035] In a preferred embodiment, as shown in the accompanying drawings Figure 2 、 Figure 4 、 Figure 7 As shown, a waterproof ring fixing ring 326 is sleeved inside the bottom groove of the waterproof ring. By inserting the additional waterproof ring fixing ring into the bottom groove of the waterproof ring, the fixing effect of the waterproof ring can be further enhanced. At the same time, because it is arranged on the side of the waterproof ring facing the inner side of the fuselage, no new gaps are introduced. After the waterproof ring is installed, the waterproof ring fixing ring is inserted into the bottom groove of the waterproof ring to achieve the tightening effect of the waterproof ring, so that the waterproof ring is more firmly attached to the rotating shaft housing. Optionally, the diameter of the waterproof ring can be set to be close to the width of the bottom groove of the waterproof ring. Therefore, when the waterproof ring is subjected to an impact force from one side of its outer edge, the waterproof ring fixing ring can play a role in deformation and cushioning. The waterproof ring fixing ring can be made of a flexible material such as rubber or a material with certain plasticity such as iron wire or plastic.

[0036] In a preferred embodiment, as shown in the accompanying drawings Figure 4 As shown, the inner circumference of the inner edge of the waterproof ring is provided with a waterproof ring side groove 324, with both sides of the waterproof ring side groove respectively contacting the outer circumference of the shaft housing. The waterproof ring side groove can be formed by cutting the existing waterproof ring structure, thereby utilizing the inherent elasticity of the waterproof ring to reduce the gap between it and the shaft housing, thereby reducing the possibility of fluid penetration.

[0037] In a preferred embodiment, at least a portion of the waterproof ring is embedded in the through hole of the fuselage, and the waterproof ring is turned outward on the outward side of the fuselage and covers at least a portion of the edge of the through hole of the fuselage. In a preferred embodiment, a waterproof ring fixing structure is provided on the outward structure of the waterproof ring, and the waterproof ring fixing structure is used to fix the waterproof ring and the fuselage. As shown in the accompanying drawings Figure 2 、 Figure 7 As shown, the waterproof ring is partially embedded in the through-hole of the fuselage. The waterproof ring is secured to the through-hole by means of a waterproof ring fixing hole 312 on the outer edge 314 of the waterproof ring and a waterproof ring fixing post 311, thereby covering the through-hole, reducing the frontal gap and enhancing the waterproof effect. The back of the outer edge of the waterproof ring can be provided with a waterproof ring snap pattern to mate with the structure near the through-hole of the fuselage, thereby securing the waterproof ring and enhancing the lateral waterproof performance. The waterproof ring fixing post can be a rivet, screw, or snap post.

[0038] In a preferred embodiment, as shown in the accompanying drawings Figure 6As shown, the shaft housing is a cover structure. The top surface of the cover structure is provided with a shaft hole 331 to prevent the shaft from falling out of the shaft hole. A threaded structure can be provided on the inner side thereof to clamp the external shaft for transmission. The cover structure is integrally formed to reduce gaps. Optionally, a shaft waterproof cover 13 is provided at the edge of the shaft hole to enhance the waterproof effect between the external shaft and the transmission shaft. The external shaft or other accessories can be fixed through the shaft housing fixing hole 332 provided on the shaft housing. Optionally, the external shaft can also be a structure such as the blade of a slicer.

[0039] In a preferred embodiment, the outer peripheral surface of the shaft housing is provided with an inclined surface and / or a step to guide the splashing fluid to a position away from the waterproof ring. Figure 6 As shown, the arrangement of the inclined surface 333 and the step 334 on the outer peripheral surface of the shaft shell can play a role in rebounding or draining when the fluid splashes, thereby preventing the fluid from penetrating into the interior of the fuselage.

[0040] In a preferred embodiment, the shaft housing is a transmission pulley, the interior of the shaft housing is fixedly connected to the shaft, and a waterproof ring is provided in the middle of the shaft housing to form a first transmission part and a second transmission part at both ends of the shaft housing. Figure 2 As shown, the upper limit ring 14 of the rotating shaft, the lower limit inner ring 15 of the rotating shaft, the lower limit outer ring 16 of the rotating shaft, the upper transmission ring 17 of the rotating shaft, the lower transmission ring 18 of the rotating shaft, the rotating shaft limiting sleeve 19 and the inner peripheral wall of the rotating shaft shell cooperate to at least fix the transmission rotating shaft and the rotating shaft shell, so that the driving of the transmission rotating shaft is realized by driving the rotating shaft shell; when the transmission rotating shaft rotates under the rotation of the rotating shaft shell, the waterproof ring rotates with the rotating shaft shell. Since the contact between the waterproof ring and the waterproof ring is achieved through the side walls of the two, it has good sealing performance, and the rotation can bring out the fluid retained in the gap through centrifugal motion; optionally, the two ends of the rotating shaft shell are used for transmission respectively, and the waterproof component is installed in the middle of the pulley. The end of the rotating shaft shell on the inner side of the fuselage is the first transmission part, which can be used to be connected to the motor through a belt, and the end located on the outer side of the fuselage is the second transmission part, which can be used to transmit to external components. Through the improvement, compared with the rubber waterproof ring that directly abuts the cutter disc or other external rotating shaft, the rubber waterproof ring in this embodiment does not contact the cutter disc on the one hand, and on the other hand, it avoids contact with the fluid during equipment operation, thereby extending the life of the waterproof ring.

[0041] An outer rotor device, such as a slicer, blender or other device, comprises a motor, a control circuit and a waterproof structure as described above. Figure 1As shown, a transmission shaft extension portion 111 is provided on the side of the transmission shaft facing the inside of the fuselage, which can be optionally connected to the transmission shaft by a threaded manner, and can be used to facilitate the assembly of the entire machine and adjust the abutment force between the waterproof ring and the waterproof ring; the motor can drive the shaft housing or the transmission shaft under the drive of the control circuit; the waterproof structure can achieve a very good waterproof effect due to its tight fitting method.

[0042] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. An outer rotor waterproof structure, characterized in that: The invention comprises a waterproof component, wherein the waterproof component covers at least the edge of the fuselage through-hole on the fuselage through which the outer rotor shaft is led out; the waterproof component comprises a waterproof ring, a waterproof ring and a shaft shell; the waterproof ring is installed around the fuselage through-hole; a waterproof ring protrusion inner edge is provided on the inner circumference of the waterproof ring; the inner circumference of the waterproof ring protrusion can abut against the waterproof ring to limit the waterproof ring; the waterproof ring is sleeved on the shaft shell; the outer rotor shaft is passed through the shaft shell, so that the waterproof structure has the following characteristics: when the outer rotor shaft rotates, the waterproof ring rotates with the shaft shell, and the outer circumference of the waterproof ring and the inner circumference of the waterproof ring move relative to each other; The waterproof ring is provided with a waterproof ring bottom groove on one side facing the fuselage, and at least a waterproof ring outer edge and a waterproof ring inner edge are formed on both sides of the waterproof ring bottom groove, the bottom surface of the waterproof ring outer edge is against the inner edge of the waterproof ring protrusion, and the outer peripheral surface of the waterproof ring outer edge is in contact with the inner peripheral surface of the waterproof ring; The inner circumference of the inner edge of the waterproof ring is provided with a waterproof ring side groove, and both sides of the waterproof ring side groove are respectively attached to the outer circumference of the shaft shell; At least a portion of the waterproof ring is embedded in the through hole of the fuselage. The waterproof ring is turned outward on the outward side of the fuselage and covers at least a portion of the edge of the through hole of the fuselage.

2. The waterproof structure according to claim 1, characterized in that: A waterproof ring fixing ring is sleeved on the inner side of the waterproof ring bottom groove.

3. The waterproof structure according to claim 1, characterized in that: A waterproof ring fixing structure is provided on the outward-turned structure of the waterproof ring, and the waterproof ring fixing structure is used to fixedly connect the waterproof ring and the fuselage.

4. The waterproof structure according to claim 1, characterized in that: The rotating shaft housing is a cover structure, and a rotating shaft hole and a plurality of rotating shaft fixing holes are provided on the top surface of the cover structure for connecting an external rotating shaft.

5. The waterproof structure according to claim 1, characterized in that: The outer peripheral surface of the rotating shaft housing is provided with an inclined surface and / or a step for guiding the splashing fluid to a position away from the waterproof ring.

6. The waterproof structure according to claim 1, characterized in that: The rotating shaft shell is a transmission pulley, the interior of the rotating shaft shell is fixedly connected to the rotating shaft, and the waterproof ring is arranged in the middle of the rotating shaft shell to form a first transmission part and a second transmission part at both ends of the rotating shaft shell respectively.

7. An outer rotor type device, characterized in that: include: A motor, a control circuit, and a waterproof structure according to any one of claims 1 to 6.

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