WAVE-BREAKING CHASSIS

Description

1 / 6 WAVE-BREAKING CHASSIS UTILITY MODEL FIELD

[001] The present utility model applies to the field of household appliances, more specifically to vertical rotary machines intended for drying clothes after washing. In particular, the utility model refers to a wave-breaking chassis design applicable to clothes centrifuges. BACKGROUND OF THE UTILITY MODEL

[002] In a competitive environment, the home appliance industry, especially the white goods industry, is constantly seeking new technologies that optimize its products, as well as its manufacturing and assembly processes.

[003] In this scenario of constant evolution in the sector, various models of centrifuges, washing tubs and washing machines are designed with the aim of offering safer, more efficient and durable products, creating competitive advantages to better meet the needs of users.

[004] The search for new technologies encompasses the development of new component configurations applied to products, innovative control systems, and advanced manufacturing processes. However, despite the advances achieved over the years, there are still many solutions to be created to solve the problems still present in the state of the art.

[005] One of the biggest challenges in developing vertical rotary machines used in the laundry process is preventing some of the water used in washing or removing excess water from running onto the motor and its components during operation, which can cause motor degradation or even complete failure.

[006] Specifically in the case of clothes centrifuges, the configuration currently used comprises a rotating basket with multiple holes, installed in a chassis made of polymeric material, positioned between the Petition 870250063281, dated 07 / 23 / 2025, pages 38 / 43 2 / 6 basket and the motor responsible for its rotation.

[007] During the centrifuge's operation, excess water is expelled from the clothes by the rotation of the multi-perforated basket, running down the inner sides of the machine to the lower chassis. This, in turn, directs the water to a drain hole located on its lower surface.

[008] The problem occurs when there is an excessive amount of clothes in the basket, resulting in a water flow greater than the drainage system can handle. This can cause some of the excess water to be directed to the central hole in the chassis, where the hole housing the transmission shaft responsible for connecting the motor to the basket is located. This scenario is particularly critical, as even a small amount of liquid can be enough to cause irreparable damage to the motor.

[009] In addition to the potential damage to the motor, several electrical components are located just below the chassis. These components must not come into contact with liquids, as this could cause short circuits, resulting in damage to the electrical components as well as other systems of the centrifuge.

[0010] In this context, the state of the art presents several solutions to this technical problem, proposing new elements and constructive arrangements that hinder water access to critical components of the centrifuge, such as the motor and electrical elements.

[0011] An example of the state of the art that addresses problems related to water ingress into the motor is Chinese patent CN102304839A, which describes a waterproof rubber element designed to protect the motor of a washing machine.

[0012] The patent discloses a waterproof rubber device in the shape of an umbrella, with a central hole for the passage of the transmission shaft. The device is positioned immediately below the inner tub of the machine and above the motor, so as to prevent any splashing. Petition 870250063281, dated 07 / 23 / 2025, pages 39 / 43 3 / 6 reach the engine.

[0013] Another state-of-the-art document is Chinese patent CN105020396A, which describes a washing machine equipped with a sealing ring located on the machine's base plate. Furthermore, the patent highlights that the motor is encased in a waterproof sleeve, adding an extra layer of protection against water ingress into the motor area.

[0014] Although the examples cited above were developed with the aim of overcoming the aforementioned technical problem, these solutions are based on the application of waterproof materials and dynamic seals to prevent water ingress. However, these approaches present new limitations, since dynamic seals have a reduced lifespan and are susceptible to failures resulting from material wear, requiring greater attention to their maintenance which in turn can result in human error during the process.

[0015] In this context, despite advances in the state of the art, none of the prior art offers a definitive solution that is immune to human error or material wear.

[0016] In order to solve the problems present in the state of the art, the present utility model introduces a wave-breaking chassis designed to prevent water from the spin cycle of clothes from reaching the motor. SUMMARY OF THE UTILITY MODEL

[0017] The present utility model presents a WAVE-BREAKING CHASSIS, designed to direct the wash water to the drain hole. It creates physical barriers that prevent excess water flow from reaching the hole through which the transmission shaft passes, which gives access to the centrifuge motor.

[0018] The physical barriers mentioned are deflector fins that surround the motor orifice at different radii, forming channels of Petition 870250063281, dated 07 / 23 / 2025, pages 40 / 43 4 / 6 drainage that directs the water to the appropriate orifice, located near the inner side edge of the centrifuge.

[0019] Unlike documents in the prior art, the solution proposed in this utility model does not require the use of rubber or sealing elements, which have a limited lifespan. As the fins are part of the chassis body itself, they do not suffer wear from friction with other components of the centrifuge, being subjected only to minimal wear caused by the water flow.

[0020] In this sense, the chassis with deflector fins presents itself as a simpler solution compared to those available in the state of the art, reducing the manufacturing costs of the centrifuge, requiring less maintenance and, even so, guaranteeing the protection of the motor against the entry of water from the centrifugation of clothes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 shows a view of the chassis as it is known in the state of the art, with the presence of the drain hole (3) near the inner side of the centrifuge and the central hole (4) through which the transmission shaft passes.

[0022] Figure 2 shows the isometric view of the wave breaker chassis (1), including the highlighted deflector fins (2), drainage hole (3), central hole (4) and support holes (6).

[0023] Figure 3 shows a cutaway view of the centrifuge where the inner side wall (7), the chassis (1) with the deflector fins (2), the transmission shaft (5) through the central hole (4) and the holes (6) with the support cushions (6.1) fitted can be seen.

[0024] Figure 4 shows a transparent view of the chassis (1) demonstrating the elements already shown in Figure 3 plus the engine (8) positioned below said chassis (1).

[0025] Figure 5 shows a view of the centrifuge equipped with the chassis already Petition 870250063281, dated 07 / 23 / 2025, pages 41 / 43 5 / 6 known in the state of the art, in which it is possible to observe the flow of water (10) exiting the multi-perforated basket (9), running down the side wall (7) and passing through the orifice (4) towards the motor and electrical components.

[0026] Figure 6 shows a view of the centrifuge fitted with the chassis (1), in which it is possible to observe that the water flow (10), coming from the multi-perforated basket (9), runs down the inner side wall (7) and is directed by the deflector vanes (2) to the drain orifice (3), without reaching the central orifice (4). DETAILED DESCRIPTION OF THE UTILITY MODEL

[0027] The present utility model presents a WAVE-BREAKING CHASSIS applied to clothes centrifuges and comprises one or more deflector fins (2), one or more drainage holes (3), central hole (4) through which the motor shaft (5) passes (8) and holes (6) for placing the support cushions (6.1) for fixing the motor (8).

[0028] The chassis (1) is positioned between the multi-perforated centrifuge basket (9) and the motor (8), preferably having a configuration with multiple planes, either parallel to the ground or inclined towards the perimeter of the chassis (1). The highest plane is located in the center of the chassis (1), where the central orifice (4) is located, while the lowest plane is located near the perimeter of the chassis (1), the plane where the drain orifice (3) is also positioned, and there may be one or more of these said orifices (3).

[0029] The deflector vanes (2) surround the central orifice (4) at different radii (if there are multiple vanes) acting as barriers that direct the water flow (10) to the discharge orifice (3). The number of vanes (2) varies according to the size of the centrifuge; however, the preferred configuration has vanes arranged at two different radii, as illustrated in Figure 2.

[0030] The maximum height of the deflector fins (2) must be less than the base of Petition 870250063281, dated 07 / 23 / 2025, pages 42 / 43 6 / 6 basket (9) and preferably higher than the highest plane of the chassis (1), where the central hole (4) is located. If the height of the fins (2) exceeds (or is very close to) that of the base of the basket (9), a collision with the basket (9) will occur during the operation of the centrifuge. On the other hand, if the height of the fins (2) is less than that of the plane of the central hole (4), they may not be sufficient to prevent the flow of water (10) from reaching the central hole (4).

[0031] The holes (6) intended for the installation of the support cushions (6.1) for fixing the motor (8) may be replaced by any other means of support that may be proposed, provided that these elements perform the same function as the cushions (6.1).

[0032] Despite the detailed description of the chassis (1), any changes considered equivalent to the characteristics described in this patent and which have the same or very similar result to that obtained, are also part of the utility model proposed here. Petition 870250063281, dated 07 / 23 / 2025, p. 43 / 43

Claims

1 / 1 CLAIMS 1) WAVE-BREAKING CHASSIS applied to clothes centrifuges, positioned between the multi-perforated basket (9) and the motor (8) of the centrifuge, and comprising a central hole (4) through which the shaft (5) of the motor (8) passes, one or more drainage holes (3) and holes (6) for placing the support cushions (6.1) for fixing the motor (8), characterized in that said chassis (1) also comprises one or more deflector fins (2), of a height less than the height at which the basket (9) is positioned, surrounding the central hole (4). 2) WAVE-BREAKING CHASSIS according to claim 1, characterized in that the chassis (1) has a configuration with multiple planes, either parallel to the ground or inclined towards the perimeter of the chassis (1), with the highest plane being located in the center of the chassis (1), where the central orifice (4) is located, while the lowest plane is located close to the perimeter of the chassis (1), the plane where the drainage orifice (3) is also positioned, and there may be one or more of these said orifices (3). 3) WAVE-BREAKING CHASSIS according to either claim 1 or 2, characterized in that the chassis (1) has fins arranged in two distinct radii. 4) WAVE-BREAKING CHASSIS according to any one of claims 2 or 3 characterized in that the height of the fins (2) is greater than the highest plane of the chassis (1), where the central hole (4) is located. Petition 870250004887, dated 22 / 01 / 2025, pp. 43 / 50

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