A motor specially designed for dishwasher with high sealing performance

Abstract

The present invention discloses a high-sealing motor for dishwashers, comprising a motor body and an output shaft connected to the motor body, wherein a protective unit is installed on the outer side of the output shaft; the protective unit comprises a support layer 1, a support layer 2, a sealing part and an adjusting part, wherein the support layer 1 and the support layer 2 are both sleeved on the output shaft, the sealing part is connected between the support layer 1 and the support layer 2, and is also sleeved on the outer side of the output shaft, and the adjusting part is fixed to the support layer 2. The present invention uses a flexible layer to squeeze with the outer wall of the output shaft to achieve the effect of water vapor or barrier, the spring body squeezes the flexible layer to ensure that the flexible layer is squeezed with the outer wall of the output shaft, and the spring body squeezes the flexible layer in circles to make the flexible layer and the output shaft in a sealed state, and the length of the flexible layer is relatively long, even if the moisture or water moves inward, it needs to move a gap, which increases the difficulty of moisture or water infiltration.

Description

Technical Field

[0001] The invention relates to the technical field of motors, in particular to a motor dedicated to a dishwasher with high sealing performance. Background Art

[0002] The working principle of a dishwasher is to clean tableware through the combined action of physical and chemical cleaning. The water temperature inside the dishwasher can reach 70 degrees or even higher, and high-pressure water is sprayed through the spray arm to wash the surface of the tableware 360 ​​degrees without dead ends. This mechanical washing can quickly remove food residues and most oil stains on the surface of the tableware.

[0003] Among them, the working principle of the dishwasher motor varies mainly according to the type of dishwasher, such as spray type, impeller type, ultrasonic type, etc., but the core is to achieve water pressurization, rotation or vibration through the drive of the motor, so as to achieve the purpose of cleaning tableware.

[0004] The output end of the motor cannot avoid direct contact with water or moisture, or indirect contact with water in some way. Water may penetrate into the motor along the shaft or seal and cause damage to the motor. For this reason, some common waterproof and sealing measures need to be added to the motor, such as waterproof sealing rings, shaft seal design settings and waterproof coatings. Regular inspection and maintenance are also required. Regular inspection and maintenance of the dishwasher should be carried out, including checking the integrity of components such as waterproof sealing rings and shaft seals, and replacing damaged or aging components in time to ensure that the waterproof performance of the dishwasher is always maintained in good condition.

[0005] When the output end of the motor is in motion, there may be tiny gaps, and moisture or water will move along the output end of the motor and easily enter the motor. Based on this, although the waterproof seal ring or shaft seal can block it, once it enters, it cannot block moisture or water. The protective effect is single and there is no guarantee. In addition, the output end is in motion during rotation, which increases the difficulty of preventing moisture or water from penetrating. Summary of the invention

[0006] The object of the present invention is to provide a motor for dishwasher with high sealing performance to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a motor for dishwasher with high sealing performance, comprising a motor body and an output shaft connected to the motor body, wherein a protection unit is installed on the outer side of the output shaft;

[0008] The protection unit includes a support layer 1, a support layer 2, a sealing part and an adjusting part. The support layer 1 and the support layer 2 are both sleeved on the output shaft. The sealing part is connected between the support layer 1 and the support layer 2 and is also sleeved on the outside of the output shaft. The adjusting part is fixed to the support layer 2 and is used to adjust the position of the support layer 2.

[0009] The inner side of the sealing part is used for being pressed against the outer wall of the output shaft. The length and diameter of the sealing part can be adjusted, and the length is inversely proportional to the diameter.

[0010] Furthermore, the sealing part includes an elastic flexible layer and a spring body, the two ends of the flexible layer are respectively fixed to the support layer 1 and the support layer 2, the outer side of the flexible layer is provided with a spiral spiral groove, the spring body is in the spiral groove, and the two ends of the spring body are respectively fixed to the support layer 1 and the support layer 2;

[0011] When the support layer 1 and the support layer 2 are close to each other or away from each other, the spring body will be stretched or compressed, and the inner diameter of the spring body will be changed.

[0012] Furthermore, the flexible layer is an elastic rubber layer, the inner side of the flexible layer is smooth and fits with the outer wall of the output shaft, and the diameter of the spiral groove is the same as the diameter of the spring body.

[0013] Furthermore, bolts for connecting with other objects are installed on the support layer 1, the inner side of the support layer 1 is in contact with the output shaft, and the support layer 1 is used to block moisture or water moving from the direction of the output shaft.

[0014] Furthermore, the adjustment part includes a support plate 1, an adjustment plate 1, a cylinder 1, a support plate 2, an adjustment plate 2, a cylinder 2 and an internal connection spring;

[0015] The adjustment plate 1 is vertically integrated with the support plate 1, the cylinder 1 is fixed at the lower end of the support plate, the adjustment plate 2 is also vertically integrated with the support plate 2, the cylinder 2 is fixed at the upper end of the support plate 2, the cylinder 1 and the cylinder 2 are coaxially arranged, and the two ends of the internal connection spring are respectively arranged in the cylinder 1 and the cylinder 2, for stretching the support layer 2;

[0016] The support plate 1 and the support plate 2 are both fitted on the outer side of the output shaft, and the support plate 1 and the support plate 2 are respectively fixed to the support layer 2 and the motor body, and the adjustment plate 1 and the adjustment plate 2 are fitted together.

[0017] Furthermore, the interior of the second cylinder is provided with an inner circular layer that fits with its inner wall, one end of the inner connecting spring is fixed to the inner circular layer, and the other end thereof is fixed to the inner wall of the first cylinder, and the outer wall of the second cylinder is provided with a sliding opening extending along the axial direction of the second cylinder, and both sides of the sliding opening are provided with supporting edges extending along the extending direction of the sliding opening, and the two supporting edges are fixed to the outer wall of the second cylinder, and a clamping plate is clamped between the two supporting edges, and the clamping plate is fitted with the second cylinder, and an adjusting bolt is penetrated through the clamping plate, and the clamping plate is threadedly connected to the adjusting bolt, and the adjusting bolt is rotatably connected to the outer side of the inner circular layer for adjusting the position of the inner circular layer in the second cylinder.

[0018] Furthermore, the side edges of the adjustment plate 1 and the adjustment plate 2 are both bent, and the bent portions of the two are fitted together to limit the position of the support plate 1 and the support plate 2.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0020] 1. The flexible layer is used to squeeze with the outer wall of the output shaft to achieve the effect of water vapor or barrier. The spring body squeezes the flexible layer to ensure that the flexible layer is squeezed with the outer wall of the output shaft. In addition, the spring body squeezes the flexible layer in circles to make the flexible layer and the output shaft in a sealed state. The length of the flexible layer is also relatively long. Even if moisture or water moves inward, it needs to move through a gap, which increases the difficulty of moisture or water infiltration.

[0021] 2. Through the movement of the supporting layer 2, the flexible layer is stretched, and the spring body is also pulled, resulting in deformation in the length direction. After the spring body is stretched, its length increases and its inner diameter decreases, keeping the spring body in a stretched state, ensuring that the output shaft and the flexible layer are in a sealed state. Even if local aging occurs, the sealing degree remains relatively stable.

[0022] 3. As the spring body will produce certain fatigue after using for a long time, turn the adjusting bolt to support the further movement of the second layer, and the spring body will be further stretched, squeezing the flexible layer all the time, which is convenient for adjustment during maintenance and prevents moisture or water from moving inward from the rotating part of the output shaft.

[0023] 4. Under the action of the spring body and the internal connecting spring, the flexible layer squeezes the output shaft and has a certain elastic effect. Even when the output shaft rotates, it can still maintain a state of fitting with the output shaft, avoiding gaps as much as possible and maintaining a sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the protection unit of the present invention;

[0027] Figure 3 It is a schematic diagram of a half-section structure of a protection unit of the present invention;

[0028] Figure 4 It is a schematic diagram of the sealing part structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the adjustment part of the present invention;

[0030] Figure 6 The present invention Figure 5 A is a schematic diagram of the partially enlarged structure of the middle part;

[0031] Figure 7 It is a schematic diagram of the changing structure of the spring body of the present invention.

[0032] In the figure: 1. motor body; 2. output shaft; 3. protection unit; 31. support layer 1; 32. support layer 2; 33. sealing part; 331. flexible layer; 332. spiral groove; 333. spring body; 34. adjustment part; 341. support plate 1; 342. adjustment plate 1; 343. cylinder 1; 344. support plate 2; 345. adjustment plate 2; 346. cylinder 2; 347. inner connecting spring; 348. sliding mouth; 349. supporting edge; 35. inner circle layer; 351. clamping plate; 352. adjusting bolt. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 7The present invention provides a technical solution: a motor dedicated to a dishwasher plays a vital role in a dishwasher. However, during the use of the motor of a dishwasher, it is necessary to ensure that moisture or water is prevented from moving into the motor. The movement of moisture or water into the motor will cause damage to the entire dishwasher device. Some protective devices currently provided cannot completely prevent moisture or water from moving into the motor. In addition, after the waterproof material has been used for too long, it will age to a certain extent. In particular, the motor generates a relatively high temperature during operation, and the aging rate of the waterproof material will increase exponentially. In summary, a new motor device needs to be provided. Based on this, a motor dedicated to a dishwasher with high sealing performance is proposed, including a motor body 1 and an output shaft 2 connected to the motor body 1, such as Figure 1 and Figure 2 As shown, a protection unit 3 is installed on the outer side of the output shaft 2;

[0035] like Figure 3 As shown, the protection unit 3 includes a support layer 1 31, a support layer 2 32, a sealing portion 33 and an adjusting portion 34. The support layer 1 31 and the support layer 2 32 are both sleeved on the output shaft 2. The sealing portion 33 is connected between the support layer 1 31 and the support layer 2 32, and is also sleeved on the outside of the output shaft 2. The adjusting portion 34 is fixed to the support layer 2 32 and is used to adjust the position of the support layer 2 32. It should be noted that after the motor body 1 is installed, the output shaft 2 can face in various directions, and the protection unit 3 can block moisture or water, wherein the moisture or water moving from the outer wall of the output shaft 2 is mainly blocked. In the process of blocking, moisture or water is prevented from rushing in the direction of the output shaft 2;

[0036] The inner side of the sealing portion 33 is used for being pressed against the outer wall of the output shaft 2 . The length and diameter of the sealing portion 33 are adjustable, and the length and diameter are inversely proportional, so that the sealing portion 33 can be fitted onto the outer wall of the output shaft 2 .

[0037] like Figure 4 As shown, the sealing part 33 includes an elastic flexible layer 331 and a spring body 333. The two ends of the flexible layer 331 are respectively fixed to the supporting layer 1 31 and the supporting layer 2 32. A spiral groove 332 is provided on the outer side of the flexible layer 331. The spring body 333 is in the spiral groove 332. The two ends of the spring body 333 are respectively fixed to the supporting layer 1 31 and the supporting layer 2 32.

[0038] When the support layer 1 31 and the support layer 2 32 are close to or away from each other, the spring body 333 will be stretched or compressed, and the inner diameter of the spring body 333 will be changed. The spring body 333 can be adjusted so that the spring body 333 always exerts an extrusion effect on the flexible layer 331. Moreover, since the spring body 333 is arranged in multiple circles, the spring body 333 can limit the flexible layer 331 over a long distance, so that the entire flexible layer 331 is evenly attached to the outer wall of the output shaft 2, thereby blocking moisture or water to the greatest extent.

[0039] The flexible layer 331 is an elastic rubber layer. The inner side of the flexible layer 331 is smooth and fits the outer wall of the output shaft 2. The diameter of the spiral groove 332 is the same as the diameter of the spring body 333. The smooth rubber can provide maximum barrier and achieve a sealing effect. Even if there are particles on the outer wall of the output shaft 2 or on the rubber, they can be squeezed so that the output shaft 2 and the rubber are in a fit state.

[0040] like Figure 2 and Figure 3 As shown, bolts for connecting with other objects are installed on the support layer 31, the inner side of the support layer 31 is in contact with the output shaft 2, and the support layer 31 is used to block moisture or water moving from the direction of the output shaft 2. The water moving onto the support layer 31 will move along the support layer 31, so that the support layer 31 blocks the moisture or water and changes the movement direction of the moisture or water.

[0041] like Figure 5 and Figure 6 As shown, the adjusting portion 34 includes a supporting plate 1 341, an adjusting plate 1 342, a cylinder 1 343, a supporting plate 2 344, an adjusting plate 2 345, a cylinder 2 346 and an inner connecting spring 347;

[0042] The adjusting plate 1 342 and the supporting plate 1 341 are vertically integrated, the cylinder 1 343 is fixed at the lower end of the supporting plate 1 341, the adjusting plate 2 345 and the supporting plate 2 344 are also vertically integrated, the cylinder 2 346 is fixed at the upper end of the supporting plate 2 344, the cylinder 1 343 and the cylinder 2 346 are coaxially arranged, and the two ends of the inner connecting spring 347 are respectively arranged in the cylinder 1 343 and the cylinder 2 346, which are used to stretch the supporting layer 2 32, which is equivalent to the spring body 333 and the inner connecting spring 347 being matched. When the spring body 333 is wound around the outside of the flexible layer 331, it is the action force of the inner connecting spring 347. In the process of the output shaft 2 rotating, the squeezing effect is also maintained. It should be noted that even if the output shaft 2 is not in a round shaft shape, the fitting effect can be maintained to achieve the sealing effect;

[0043] The support plate 1 341 and the support plate 2 344 are both fitted on the outside of the output shaft 2 , and the support plate 1 341 and the support plate 2 344 are respectively fixed to the support layer 2 32 and the motor body 1 , and the adjustment plate 1 342 and the adjustment plate 2 345 are fitted together.

[0044] The interior of the second cylinder 346 is provided with an inner circular layer 35 which fits with its inner wall, one end of the inner connecting spring 347 is fixed to the inner circular layer 35, and the other end thereof is fixed to the inner wall of the first cylinder 343, the outer wall of the second cylinder 346 is provided with a sliding opening 348 extending along the axial direction of the second cylinder 346, and both sides of the sliding opening 348 are provided with supporting edges 349 extending along the extending direction of the sliding opening 348, the two supporting edges 349 are fixed to the outer wall of the second cylinder 346, and a clamping plate 351 is clamped between the two supporting edges 349, and the clamping plate 351 fits with the second cylinder 346, and the clamping plate 351 is provided with a clamping plate 351 on the clamping plate 351. An adjusting bolt 352 is provided throughout, and the clamping plate 351 is threadedly connected to the adjusting bolt 352. The adjusting bolt 352 is rotatably connected to the outer side of the inner circular layer 35 to adjust the position of the inner circular layer 35 in the cylinder 346. When the spring body 333 and the inner connecting spring 347 are tired, the position of the inner circular layer 35 is changed by rotating the adjusting bolt 352, and the inner connecting spring 347 is stretched to ensure that the spring body 333 squeezes the flexible layer 331. During maintenance, only the position of the inner circular layer 35 needs to be adjusted, which is convenient for maintenance and operation.

[0045] The sides of the adjustment plate 1 342 and the adjustment plate 2 345 are both bent, and the bent parts of the two are fitted together to limit the support plate 1 341 and the support plate 2 344 to achieve the limiting function and prevent the protection unit 3 from rotating.

[0046] Working principle of the present invention: during the operation of the dishwasher, the motor body 1 inside it works to rotate the output shaft 2. During the rotation of the output shaft 2, even if there is a waterproof sealing ring or a shaft seal, it is difficult to block moisture or water. Especially after a long period of use, the sealed parts are prone to aging, which makes it easier for water or water vapor to enter the interior of the motor body 1. Based on this, a sealing part 33 is set, and the flexible layer 331 is used to squeeze with the outer wall of the output shaft 2 to achieve the effect of blocking water vapor. In addition, the outer spring body 333 has the function of supporting and fastening, so that the spring body 333 squeezes the flexible layer 331 to ensure that the flexible layer 331 is squeezed with the outer wall of the output shaft 2. In addition, the number of turns of the spring body 333 is relatively large, and the flexible layer 331 can be squeezed one by one, so that the flexible layer 331 and the output shaft 2 are in a sealed state, which makes it difficult for moisture or water to penetrate. The length of the flexible layer 331 is also relatively long. Even if moisture or water moves inward, it needs to move a gap, which increases the difficulty of moisture or water penetration.

[0047] The support layer 1 31 is fixed, and the support layer 2 32 can move. Through the movement of the support layer 2 32, the flexible layer 331 is stretched, and the spring body 333 is also pulled, resulting in deformation in the length direction, such as Figure 7As shown, after the spring body 333 is stretched, its length increases and its inner diameter decreases. During the installation process, the spring body 333 is kept in a stretched state, so that the flexible layer 331 is always squeezed against the outer wall of the output shaft 2, so that the output shaft 2 and the flexible layer 331 are ensured to be in a sealed state. Even if local aging occurs, the squeezed state is maintained, and the sealing degree remains relatively stable.

[0048] In addition, as the spring body 333 will produce a certain degree of fatigue after being used for a long time, the sealing degree will be reduced. Based on this, the adjusting bolt 352 is rotated to control the inner circular layer 35 to move, so that the inner connecting spring 347 is stretched to relatively move the support plate 1 341, and the support layer 2 32 moves further. The spring body 333 is further stretched and the flexible layer 331 is squeezed, which is convenient for adjustment during maintenance and prevents moisture or water from moving inward from the rotating part of the output shaft 2.

[0049] In addition, the output shaft 2 needs to rotate. Under the action of the spring body 333 and the internal connecting spring 347, the flexible layer 331 squeezes the output shaft 2 while having a certain elastic effect. Even under the action of the rotation of the output shaft 2, it can still maintain a state of being in contact with the output shaft 2, avoiding the generation of gaps as much as possible and maintaining the sealing effect.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A highly sealed motor for dishwashers, comprising a motor body (1) and an output shaft (2) connected to the motor body (1). Features: A protection unit (3) is installed on the outer side of the output shaft (2); The protection unit (3) comprises a support layer 1 (31), a support layer 2 (32), a sealing portion (33) and an adjusting portion (34); the support layer 1 (31) and the support layer 2 (32) are both sleeved on the output shaft (2); the sealing portion (33) is connected between the support layer 1 (31) and the support layer 2 (32), and is also sleeved on the outside of the output shaft (2); the adjusting portion (34) is fixed to the support layer 2 (32) and is used to adjust the position of the support layer 2 (32); The inner side of the sealing portion (33) is used to be pressed against the outer wall of the output shaft (2); the length and diameter of the sealing portion (33) are adjustable, and the length is inversely proportional to the diameter; The sealing portion (33) comprises an elastic flexible layer (331) and a spring body (333), the two ends of the flexible layer (331) are respectively fixed to the first support layer (31) and the second support layer (32), the outer side of the flexible layer (331) is provided with a spiral groove (332), the spring body (333) is inside the spiral groove (332), and the two ends of the spring body (333) are respectively fixed to the first support layer (31) and the second support layer (32); When the support layer 1 (31) and the support layer 2 (32) are moved closer to or farther from each other, the spring body (333) is stretched or compressed, thereby changing the inner diameter of the spring body (333); The adjusting portion (34) comprises a supporting plate 1 (341), an adjusting plate 1 (342), a cylinder 1 (343), a supporting plate 2 (344), an adjusting plate 2 (345), a cylinder 2 (346) and an internal connecting spring (347); The adjustment plate 1 (342) and the support plate 1 (341) are vertically integrated, the cylinder 1 (343) is fixed at the lower end of the support plate 1 (341), the adjustment plate 2 (345) and the support plate 2 (344) are also vertically integrated, the cylinder 2 (346) is fixed at the upper end of the support plate 2 (344), the cylinder 1 (343) and the cylinder 2 (346) are coaxially arranged, and the two ends of the internal connection spring (347) are respectively arranged in the cylinder 1 (343) and the cylinder 2 (346) for stretching the support layer 2 (32); The support plate 1 (341) and the support plate 2 (344) are both fitted on the outside of the output shaft (2), and the support plate 1 (341) and the support plate 2 (344) are respectively fixed to the support layer 2 (32) and the motor body (1), and the adjustment plate 1 (342) and the adjustment plate 2 (345) are arranged in a fitted manner; The interior of the second cylinder (346) is provided with an inner circular layer (35) which is in contact with the inner wall thereof, one end of the inner connecting spring (347) is fixed to the inner circular layer (35), and the other end thereof is fixed to the inner wall of the first cylinder (343), the outer wall of the second cylinder (346) is provided with a sliding opening (348) extending along the axis direction of the second cylinder (346), and both sides of the sliding opening (348) are provided with supporting edges (349) extending along the extending direction of the sliding opening (348), and the two supporting edges (349) are A clamping plate (351) is fixed to the outer wall of the second cylinder (346), and is clamped between the two supporting edges (349). The clamping plate (351) is in contact with the second cylinder (346). An adjusting bolt (352) is passed through the clamping plate (351), and the clamping plate (351) is threadedly connected to the adjusting bolt (352). The adjusting bolt (352) is rotatably connected to the outer side of the inner circular layer (35) and is used to adjust the position of the inner circular layer (35) in the second cylinder (346).

2. The highly sealed motor for dishwashers according to claim 1, Features: The flexible layer (331) is an elastic rubber layer, the inner side of the flexible layer (331) is smooth and fits the outer wall of the output shaft (2), and the diameter of the spiral groove (332) is the same as the diameter of the spring body (333).

3. The highly sealed motor for dishwashers according to claim 1, Features: Bolts for connecting with other objects are installed on the support layer one (31), the inner side of the support layer one (31) is in contact with the output shaft (2), and the support layer one (31) is used to block moisture or water moving in the direction of the output shaft (2).

4. The highly sealed motor for dishwashers according to claim 1, Features: The side edges of the adjustment plate 1 (342) and the adjustment plate 2 (345) are both bent, and the bent portions of the two are arranged to fit together and are used to limit the position of the support plate 1 (341) and the support plate 2 (344).

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