TR201611098A2 - A BEARING HOUSING AND MANUFACTURING METHOD FOR THE DRUM SHAFT - Google Patents

Abstract

A tub (17) that surrounds a rotating drum (13) with a loading door (11) and a connection hole (176) on the rear wall (170) of this tub, which rotates the drum (13) in washing machines (1). It is a bearing assembly (30) comprising a casing (300) having at least two bearing housings (42, 44) placed in a front mouth (32) and a rear lip (34) that houses the drum shaft (20) in this hole (176). In order to create a cheaper, more durable structure than the present embodiments, the housing (300) of the invention is coaxial with said hole (176) and grasps the hole (176) by means of a monolithic plastering method so that it contacts the inner surface of the hole (176). It is made of sheet metal that is broadly adjusted in a diameter suitable for the diameter of the bearing bearings (42,44) surrounded by the rear edge (301, 304).

Description

TECHNICAL FIELD Today, the invention is especially used in washing machines or washer dryers. It is related to the bearing housing of a drum suitable for use and is economical, durable. It concerns an increased, environmentally friendly bearing housing housing.

KNOWN STATE OF THE TECHNIQUE In existing washing machines, with the help of a setting button on the machine. The washing process is carried out as desired according to the type and pollution of the laundry. Parts that make up the washing machine: drum, drum arm, shaft, bearing housing, drum hair, balance weight. can be listed as a motor. Drum shaft rotating at one end the boiler attached to and attached to the drum and the other For washing machines with free ends and a front load in which they are mounted. a shaft that connects the drum to the drum and is connected to the drum for the movement of the drum. There are bearing elements in the region where the boiler is deposited. 2011/07340 no. In the patent application without examination, the drum shafts of the washing machines Coaxiality of the bearings with the drum shaft with the two-piece plastic housing for the bearings and they are positioned at a certain distance from each other. plastic housing Reducing material weight and machining, assembly and material costs is intended. In the claims explained in the invention, the said improvement is applied to the bearings. drum, which is injected so that the bearing seating surfaces do not need to be machined. two coincidence with the axis of rotation of the shaft, and the distance between the bearings to be determined. It tells that it is made of plastic parts. Casting currently used The heavy bearing of the bearing made of material is due to the excessive use of the material. constitutes a cost. To provide coaxiality with the mentioned method A new bearing housing has been introduced. But it's a two-piece construction. Due to this reason, the desired performances will not be achieved during assembly.

In addition, manufacturers are now always putting on the market laundry with higher spin speeds. driving the washing machine on the bearing of the drum inside the drum This causes increased mechanical bending and torsional loading on the shaft each time. This and incorrect settings, reduced life of parts, etc. washing with consequences parts used in the bearing of the shaft of the drum of the machine and their causes high cost of materials.

In some applications on this subject, instead of strengthening the shaft structure, it takes up extra space. Compressing the shaft with a product is both an extra cost and a design challenge. return is attached. The bushings used in the drum shaft bearings of the washing machines are made of brass or cast iron. It is produced and not economical and light. Cost improvements in bearing and shaft usually changes in diameter on the metal part of the shaft, length dimensions or profile on the outer surface as geometric changes. Boiler material made of plastic metal The elements in the drum shaft and bearing are made of metal. Washing The operation of the machines causes different fatigue of two different materials and distortions occur over time.

Accordingly, the effect of economic and current fatigue in the technique The shaft that provides movement to the drum is in the opening on the boiler. A new bearing element or bearing set is needed. Especially The new structuring is resistant to wear, fatigue, resistance that may occur over time. It is expected that it will prevent their dreams. At the same time, reducing the production cost is important.

BRIEF DESCRIPTION OF THE INVENTION A more economical bearing housing than existing applications in the inventive technique it provides.

The new bearing housing housing of the invention can be produced from recycled material. There is the housing, which is the subject of the invention, used in the washing machine bedding. Logistics costs are reduced due to the use of lighter materials than the structures. environment-friendly due to the reduction of parts and/or parts costs and operations. washing machine production will be provided.

With the invention, the drum shaft of the washing machine will be covered with plastic and combined with the boiler body. It is more robust because it is the same base material as It is possible to obtain a more economical product with high energy saving due to its light weight. is intended.

The invention is a rotary engine having a loading mouth to achieve the above purposes. a drum that surrounds the drum in such a way that the loading mouth remains open and the rear of this drum In washing machines with a connecting hole on the wall, the drum rotates. which are placed in a front mouth and a rear mouth that bear the drum shaft in this hole. It is a bearing assembly containing at least two bearings and its feature is that the said housing coaxial with the hole and making one-to-one contact with the inner surface of the hole. of the drum shaft, which grips with the plastering method and surrounds it at the front and rear Bearing bearings with geometry suitable for passage and hollow tubular form It is made of sheet metal that has been widely adjusted in a diameter suitable for its diameter.

Therefore, the connection between the lighter material and the surfaces will be most effective.

In order to achieve the above purposes, the invention is to ensure that the lateral surface of said housing is Boiler rear wall at predetermined intervals from different points around the end-to-end At least one or more extending to form recesses in the lateral surface of the hole the presence of an attachment protrusion. In this way, even in the active working conditions of the shaft. A solid and constant contact will be ensured.

In order to achieve the above purposes, the invention is formed between the front and rear of the enclosure. a middle that narrows to a value smaller than the diameter of each of the bearings contains some. This structure also creates material savings. At the back wall multiple protrusions entering in radial form or their corners in hemispherical form it is rounded. Radial forms maximize manufacturability, resulting in cracks in the corners. or it will eliminate connection difficulties.

In order to achieve the above purposes, the invention covers the circumference of its lateral surface end-to-end. is to create a string of ridges consisting of at least 2 or 4 ridges in a way that surrounds them.

The number of protrusions mentioned has been calculated as optimum in the experiments. can be increased.

In the invention, two rows of protrusions encircle the lateral surface of the enclosure end-to-end and a fixation channel is formed between these two series of protrusions. This channel is the same It provides good adhesion of the material between the protrusions that form vertical columns in the direction.

In the invention, the enclosure is also subjected to a process that will increase the surface area.

The rough surface provides convenience in the connection of the two materials. Preferably for good joining In order to increase the surface area of the enclosure, it is subjected to sandblasting.

The sandblasting process mentioned in the invention is carried out by hitting the metal surface with high pressure air. and/or application in sandblasting boiler and/or sandblasting cabinet and/or with turbine It is applied within the automatic sandblasting machine.

The invention reveals that the surface abrasive materials used in the mentioned sandblasting process are metal. based and/or glass based and/or mineral based and/or mentioned The consumables used in the sandblasting process are stainless steel balls, glass beads, from a group consisting of aluminum oxide ball, steel grid, basalt, silica and quartz. any and/or combinations thereof.

In an invention preferred application, the sheet thickness of the enclosure is between 0.60 mm and 6.00 mm. and in particular at least 2 mm or more in thickness and less than or less than 4 mm is selected as. In a preferred embodiment, the casing welded pipe is in the structure.

The invention is, in a preferred embodiment, a manufacturing method for obtaining a container, plastering to be shaped in a form suitable for the axis diameter of the rear wall hole of the enclosure Placing the pipe attached to the mold inside the drum mold is performed in eccentric presses. Boiler made of plastic in accordance with the metal molding process of the casing as a tight fit on the ball bearings that house the drum shaft inside its body. hammering and entering the injection process, as well as plastic raw material on the pipe. sandblasting operation, which will increase its better adhesion, is one of the process steps at least. includes one or combinations thereof. In a preferred embodiment, the invention is A washing machine with an enclosure is applied.

BRIEF DESCRIPTION OF THE FIGURES This invention is the preferred preferred description given to the accompanying drawings and detailed description hereinafter. The configurations are explained in more detail through these drawings; Figure 1 A schematic drawing of a front-loading washing machine. Side section of a known application of the bearing to which the oscillation group is connected is the view Figure 2 It is connected to the rear body of the boiler to support the drum shaft. a bearing of the invention in which a known drum shaft is placed perspective representation of the enclosure.

Figure 3 Washing machine with the bearing inserted in the housing, which is the subject of the invention. Top view of the boiler mounted on the back wall.

Bearing bearings are driven into Figure 4 and sealing gasket is mounted on it. washing machine tub rear wall of the inventive enclosure This is the sectional view of the view mounted in the hole from the A-A axis in Figure 3.

Figure 5 The front bearing bearing at the front end of the drum shaft and the connection of this bearing to the boiler an invention that provides a more durable hold and the formation of a coaxial form the sealing felt to be connected to the housing in question and at the front mouth of the housing. disassembled view.

DETAILED DESCRIPTION OF THIS ITEM In Figure 1, the known solution of the inventive bearing assembly (30) in the present art preferably a horizontal axis washing machine (1), a drum (13) visibly schematically shown as. The washing machine (1) is accessible from the front with a washing loader It has a door (11). From the laundry loading door (11) to the inside of the drum (13) is accessible. A plastic tub (17) surrounds the drum (13). is placed in. It allows the laundry to be placed inside and removed after being placed. a laundry loading door (11), on which the parts with the control group are placed loading a detergent into which cleaning materials are placed in the panel area It includes a drawer (12). Washing machine (1), mechanically stable during operation In order to provide strength and to provide cheaper material, the boiler on the back having a rear wall (170) with wall duct (172) and boiler rear wall federate (174) a boiler (17).

Currently, it is inserted into the tub (17) with the tub (17) whose rotational axes are aligned concentrically. It is a cylindrical device that is placed coaxially and in which the items to be washed are placed. drum (13) is connected to the boiler (17) in the middle part of the rear part of the drum (13). a drum shaft (20) which is mounted and transfers the movement to the drum (13), this shaft (20) a boiler (17) in the middle section of the rear wall (170) to connect it to the wall (170). wall hole (176), in the middle of the boiler rear wall (170), motionless with the boiler (17) a standing tube extending towards the center of the drum (13), into which the drum shaft (20) is mounted. The bearing housing part (36) and the bearing assembly (30) are located in the a bearing assembly consisting of two centered roller bearings (40) and two bushings (60) contains.

There is a pulley (16) connected to the shaft (20) at the back of the drum (13). this mile (20) passes through the middle of the bearing assembly (30). that drives the drum (13) pulley (16) mechanism in which the motor (14) moves via a motor shaft (15) By moving the drum shaft (20), the drum (13) moves. seen in Figure 1 pulley (16) to ensure that the said moving system works stably and without dispersion. mechanism, at the points where the motor shaft (15) and the drum shaft (20) are connected to the pulley (16). fixing element (18) and tightening nut (19).

In Figure 2, the drum shaft (20) is partially cut and zoomed in perspective. The application of the invention subject is shown.

A cylindrical bearing housing made of metal material surrounding the bearings (40) (300) extends through the connecting hole 176. Enclosure (300) wide a housing front (301) and a housing midsection tapering therefrom (302). A housing back (303) from the housing middle (302) gradually extended. At the front and rear of the enclosure (300) the coupling hole completely surrounds its lateral surface (178). In the middle of the enclosure (302) radial outward attachment projections (305) are formed. promotion The protrusions 305 are arranged one after the other in a radial spacing manner.

Thus, the anchor protrusions (305) will form columns within the attachment hole (176). arranged in a row. Anchor projections 305 are in the form of an elongated dome. at the ends radii are given. Annotation tabs (305) one after the other, one protrusion sequence (306). The anchor protrusion (305) located in each column is adjacent to an all-round anchor tab with the corresponding anchor protrusion (305) on the column sequence (306). Between two adjacent ridges (306) fixing channel (307). connecting hole (176) along the extension axis The columns formed by the housing (300) are connected in both the direction of advancement and rotation. hole (176) ensures that it is firmly seated in it. Housing front (301) the enclosure has a narrower diameter than the rear 303. The enclosure 300 generally It is a gradual structure.

In Figure 3, the back wall of the boiler (170) with the A-A axis is shown. back wall (170) radially spaced triangle-like form rear wall ribs (174) and there are rear wall channels (172) remaining between them. Win (17) medium In its central part, a circular housing (300) and bearings (40) are located.

The bearings (40) are located coaxially with the housing (300).

In Figure 4, the boiler rear wall 170 is shown as a section taken from the A-A axis.

The cylindrical drum shaft (20) runs through a drum shaft front end (24) into the tub. extends. On the other hand, the drum shaft rear end (26) is toward the outside of the drum (13). extends. As shown here in Figure 1, from the motor by contacting the pulley (16). (14) is driven. Connection hole opened from the center of the boiler (17) The housing (300) is fixed inside (176) by plastering. Structure of the enclosure (300) preferably thin-walled and in a form compatible with the connecting hole (176).

The middle part (302) of the housing (300) cuts the lateral surface (178) of the attachment hole. sits in radial channels. Inside the housing 300, the front bearing 42 and The rear roller (44) is placed at a distance. Thus, the drum shaft (20) rotates freely in its axis of rotation. Attachment hole (176) lateral the housing (300) attachment protrusion arrays (306) engage its surface (178). Like this The connection hole (176) in which the casing (300) in the plaster structure is plastered is fixed.

Figure 5 shows the state before the bearing is inserted into the housing 300 front. shown. Front bearing (42) in a stepped tubular housing (300) the sealing felt (50) is closed on it.

This invention replaces the cast bearing housing part 36 in the state of the art. thanks to the metal molding technology close to the existing part thanks to its lighter weight the plastic tub (17) is inside the body where the ball (46) bearings (40) on the shaft (20) It is based on the fact that it is obtained by hammering on it as a tight fit. Used The material will preferably be welded pipe or pipe profile and metal molding Thanks to its technology, bearing housing in the form shown in the figure in eccentric presses (300) will occur. The pipe attached to the plaster mold can be shaped as desired and the drum (13) is placed in the mold and will cause it to hold more firmly in the injection.

In addition, sandblasting on the pipe will increase its adhesion to the plastic raw material better. operation will be done. This allows the part to hold onto the plastic tub (17) better. It will be determined according to the adhesion tests. Therefore, the invention It will also help environmental waste management. The pipe diameter used is currently It will have the same inner diameters as the cast iron casing piece (36) used and the sheet metal will be Its thickness will preferably be 2-4 mm thick enough for stress and buckling tests. Rotation thanks to the holding protrusions (305) which are configured in the form of ribs on it. It will be ensured that skimming from the boiler (17) is prevented during the process. In addition, the outer a process called sandblasting will be done on the surface and thus the lateral surface of the enclosure will be area will be increased. Sandblasting causes the metal to rust and corrosion over time. With the painting process by removing the oil, dirt, rust and corrosion on it due to its effort. It is a method applied to extend the service life of metal. Sandblasting process, custom made It is preferably made with various abrasive substances called grit. sandblasting on metal surface While it destroys visible or micronized rust and corrosion, it reveals itself. A metal that has just been sandblasted can cause rust and corrosion. This is when he is most vulnerable. After metal sandblasting, a humid environment exposed to oxidation, manifested by color change, within a few hours if left unattended. remains observed. With zinc painting, the contact of the metal with the air is cut off.

Adhesion of the applied paint to the metal surface by any chemical reaction It is not possible. Sandblasting is a roughness just like sandpaper. it provides. For full adhesion, the surface must be treated with suitable abrasives. should be roughened. Blasting sand to metal surface with high pressure air. punishment is granted. Sandblasting of very large parts with sandblasting boilers performed by machine type. Manual / automatic blasting of medium-sized parts It uses sandblasting cabins for It has a very intricate / complex geometric structure It is used for sandblasting parts, special and sensitive parts for sandblasting.

For companies that have space problems as sandblasting cabinets are small and closed systems. It is quite ideal. Generally, steel material on which cutting or welding work has not been done, profile, sheet metal elements or steel for which certain dimensions have been cut and welded in the blasting of the material, in the blasting of small and many metal parts automatic sandblasting machines with turbines are used. Automatic sandblasting machines with turbines, works with semi-automatic systems. The advantage of this system is that it is large enough to enter the machine. material can be sandblasted quickly and economically. Various in sandblasting machines sandblasting abrasive materials are used. These are metal based, glass and mineral based. can happen. It is very important to choose the right abrasives used in sandblasting. Each The type of abrasive that can be used in the sandblasting machine is different. Various sandblasting processes such as nozzle, nozzle holder, sandblasting mask, sandblasting gloves materials are used. These materials are; operational safety of the sandblaster It is used in order to provide and increase the efficiency of the sandblasting process.

As blasting consumables, stainless steel ball, glass bead, aluminum oxide abrasives such as ball, steel grid, basalt, silica, quartz are used. Silica is quite fine Silica sand, which is a variety of sand, is generally used when sanding is done with light intensity on fine hair. used. If it is basalt, this sand, which can be called dusty, is generally used in indoor environments. It is used where it can be used recyclable. Grit is again the least dusty and sandblasting power is the best type of sand. The material is iron scrap, not sand. to ISO 8501-1 Surface cleaning values are as follows. Sa 1 < 80% Lightly cleaned, Sa 2 80% Good cleaned, Sa 2.5 96% Very well cleaned Sa 3 99% Completely cleaned, Industry In its pipes, internal deburring and B surface products are produced in special order.

In the preferred application, the surface cleaning mentioned is undesirable, resulting in a rougher surface. will achieve. Preferably, the wall thickness of the pipe is between 0.60 mm and 6.00 mm. to profile dimensions According to the wall thickness, minimum and maximum values of production are taken as basis. Industrial Pipes EC tested product is available upon request. The standard length of Industrial Pipes is 6 meters. The production cost to be made in serial conditions due to cutting into the desired length is cast iron. It will be more cost effective than shaping.

Claims (1)

REQUESTS In washing machines (1) with a tub (17) that surrounds a rotating drum (13) with a loading door (11) in such a way that the loading mouth remains open and a connecting hole (176) on the rear wall of this tub (17) (13) is a bearing device (30) that lures the rotating drum shaft (20) in this hole (176) with at least two bearings (40) placed in a front mouth (32) and a rear mouth (34), and its feature is with said hole (176). ) of bearing bearings in a geometry suitable for the passage of the drum shaft (20) which is coaxial and surrounds the hole (176) with the plastering method in a way that it is in direct contact with the inner surface of the hole (176) and is in the form of a hollow pipe, at the front and rear mouth (32, 34). It is characterized by the bearing housing (300) made of sheet metal that expands in diameter suitable for (40) diameter. It is a bedding device (30) in accordance with claim 1, comprising at least one extending from different points around the lateral surface of said casing (300) from different points to the lateral surface (178) of the rear wall hole (176) of the boiler (17) at predetermined intervals. attachment projection (305). It is a bearing device (30) according to claim 1, which creates a recess towards the space in the housing (300), which narrows to a smaller value than the diameter of each of the bearings (40) between the front and rear parts (301, 303) of the housing (300). it contains a middle part (302) in the form. It is a bedding device (30) according to claim 2, and it has multiple protrusions (305) with rounded corners in a hemisphere-like form, forming recesses to the rear wall (170) in radial form from the longitudinal axis of the tubular housing (300). It is a bedding device (30) according to claim 2, and it forms a series of protrusions (306) consisting of at least 2 protrusions (305), encircling the enclosure lateral surface (304) from end to end. It is a bedding device (30) in accordance with claim 2 and consists of at least two series of protrusions (305) consisting of protrusions in such a way as to wrap the enclosure lateral surface (304) of the enclosure (300) end-to-end, and a space between these two sets of protrusions (306). fixing channel (307). It is a bearing assembly (30) according to any of the preceding claims, characterized in that the housing (300) is exposed to shaping and/or surface treatments that will increase the lateral surface area (304). It is a bedding device (30) in accordance with claim 7, characterized in that it is subjected to sandblasting to increase the surface area of the housing (300). It is a bedding device (30) in accordance with claims 7 and 8, characterized in that the said sandblasting process is applied by hitting the metal surface of the housing (300) with high pressure air and/or in the sandblasting vessel and/or in the sandblasting cabinet and/or the automatic sandblasting machine with turbine. application in it. It is a bedding device (30) in accordance with claims 7 to 9, and its feature is that the surface abrasive materials used in the sandblasting process of the enclosure (300) are selected as metal-based and/or glass-based and/or mineral-based and/or the consumables used in the said sandblasting process are stainless steel. steel ball, glass bead, aluminum oxide ball, steel grid, basalt, silica and quartz and/or their combinations. It is a bearing assembly (30) according to any one of the preceding claims. Its feature is that it is selected as mm or larger in thickness and less than 4 mm or 4 mm. It is a bedding device (30) according to any one of the previous claims, and its feature is in the form of a casing (300) welded pipe. 13. A production method for obtaining a casing (30) according to any of the preceding claims, in which the pipe attached to the plaster mold is placed into the drum (13) mold to be shaped in a form suitable for the axial diameter of the rear wall hole (176) of the casing (300), eccentric In the presses, the casing (300) is driven tightly on the ball bearings (46) that support the drum shaft (20) inside the body of the boiler (17), which is made of plastic in accordance with the spinning metal molding process and it enters the injection process. Sandblasting operation on it that will increase its better adhesion to the plastic raw material includes at least one of the process steps or combinations of these. 14. A washing machine (1) comprising a bearing housing (300) according to any one of the preceding claims or a washing machine comprising a washer-dryer.