Washing inner barrel mounting structure with outer barrel notch and washing and drying integrated machine thereof

Abstract

A washing inner cylinder mounting structure with an outer cylinder notch and a washing and drying all-in-one machine thereof are characterized in that a washing inner cylinder is rotatably arranged in an outer cylinder, the rear end of the inner cylinder is provided with an inner cylinder assembly capable of being externally connected with a driving component, the inner cylinder assembly comprises a flange plate and a bearing seat, a motor shaft and a bearing are arranged in the bearing seat, and the motor shaft is connected with the bearing. The motor shaft is in interference fit with the bearing; the flange plate is in close fit connection with the motor shaft; a notch is formed in at least one side, in the width direction of the washing machine shell, of the outer barrel, the mounting hole of the flange plate can be exposed out of the notch, an end cover capable of sealing the notch is arranged on the notch, and the end cover is flexibly connected with the outer barrel. The utility model has the advantages that the notch is cut on the outer barrel, the axial pressure can be applied to the flange plate when the motor shaft is mounted, and the interference fit structure of the motor shaft and the bearing is adopted, so that the disturbance of the inner barrel during working is effectively reduced, the stress deformation of the motor shaft in a high-speed dehydration working state is reduced, and the dehydration noise is reduced.

Description

Technical Field

[0001] The utility model relates to a mounting structure of a washing inner drum of washing and drying equipment, in particular to a mounting structure of a washing inner drum with an outer drum cutout, and a washing and drying integrated machine adopting the inner and outer drum structure. Background Art

[0002] In the washing stage of drum washing and drying equipment, the greater the height difference formed by the inner drum, the more vigorously the clothes are beaten, and the better the washing effect; while in the dehydration stage, the larger the inner drum diameter, the greater the centrifugal force generated by the clothes, the better the dehydration effect, and the lower the moisture content of the clothes. Under the standard casing width (600mm), the inner drum diameter of mainstream drum washing machines on the market (such as a capacity of 10kg) is mostly around 500mm, and it cannot be made larger.

[0003] To this end, the existing invention patent "Washing Machine" with patent number ZL201080017293.4 discloses a washing machine with a fixed outer drum and a shock absorber buffer assembly arranged between the inner drum and the casing. In order to expand the diameter of the inner drum, the above patent realizes that the outer drum is relatively fixed (that is, the outer drum is supported more rigidly) to reduce the gap between the outer drum and the casing, which can expand the diameter of the inner drum to a certain extent.

[0004] However, at present, most of the inner drum main shaft and bearings of drum washing and drying equipment adopt a clearance fit. Although this clearance fit method can facilitate the installation of the inner drum assembly, with the increase of the inner drum diameter and the demand for higher washing and dehydration capacity, the centrifugal force generated when the clothes are dehydrated is greater, and the main shaft of the inner drum is prone to deformation under the action of centrifugal force, and collides with the bearing to produce noise. Moreover, the inner drum itself will also be disturbed by the deformation of the main shaft. In order to prevent friction and collision between the inner drum and the outer barrel, when the inner drum assembly of an ordinary drum washing machine is placed into the outer barrel assembly, it is necessary to increase the gap between the inner drum and the outer barrel because a relatively large pressure cannot be applied to the inner drum and due to manufacturing errors. At the same time, a gap is often required between the main shaft and the bearing hole, which in turn limits the increase in the diameter of the inner drum.

[0005] To sum up, how to reduce the disturbance of the inner drum main shaft as much as possible without limiting the increase in the inner drum diameter is a problem that needs to be urgently solved in current drum-type washing and drying equipment. In view of the above-mentioned existing technical status, further improvements need to be made to the installation structure of the inner drum assembly of current drum-type washing and drying equipment. Utility Model Content

[0006] The first technical problem to be solved by the utility model is to provide a washing inner drum installation structure of the outer drum cutout which can both increase the inner drum diameter and effectively reduce the inner drum disturbance in view of the above-mentioned existing technical status.

[0007] The second technical problem to be solved by the present invention is to provide a washer-dryer that adopts the above-mentioned washing inner drum installation structure in view of the above-mentioned existing technical status.

[0008] The technical solution adopted by the utility model to solve the first technical problem mentioned above is: a washing inner drum installation structure with a cutout in an outer drum, the washing inner drum is rotatably arranged in the outer drum, and is characterized in that: an inner drum assembly that can be externally driven components is arranged at the rear end of the washing inner drum, the inner drum assembly includes a flange and a bearing seat, a motor shaft and a bearing are arranged in the bearing seat, wherein the motor shaft and the bearing are interference fit, and the flange is tightly connected to the motor shaft; the outer drum is provided with a cutout on at least one side along the width direction of the washing machine casing, the mounting hole of the flange can be exposed in the cutout, and an end cover that can close the cutout is arranged on the cutout, and the end cover and the outer drum are flexibly connected.

[0009] In order to make full use of the internal space of the casing and maximize the capacity of the inner drum, preferably, the minimum distance between the end cover and the casing corresponding to the end cover can be zero. Generally, the distance between the end cover and the casing can be greater than or equal to zero. When the distance between the end cover and the casing is zero, the end cover directly contacts the casing. As long as the necessary gap between the outer drum and the inner drum is ensured when the washing machine is working, the diameter of the outer drum can be expanded to the maximum, and accordingly, the diameter of the inner drum can also be maximized.

[0010] In order to reduce the vibration of the casing and ensure the sealing and reliability of the connection, preferably, the end cover can be a flexible sealing cover that can close the incision, and the opening size of the flexible sealing cover is adapted to the opening size of the incision. Therefore, the sealing cover of the flexible structure only needs to be installed once, which can achieve both the sealing of the incision and the flexible connection, thereby preventing the vibration of the outer barrel body along with the inner barrel from being transmitted to the casing during operation.

[0011] In order to facilitate the positioning and assembly of the motor shaft, preferably, the motor shaft is a stepped shaft including a small end and a large end, and the bearing includes a first bearing and a second bearing arranged in a bearing seat, wherein the first bearing is arranged at the small end of the motor shaft, and the second bearing is arranged at the large end of the motor shaft. The motor shaft is made into a stepped shaft structure, which is convenient for quick installation and axial positioning.

[0012] In order to improve the waterproof performance, as a further preferred embodiment, a sealing cover capable of achieving water sealing is also provided on the motor shaft to prevent water from entering the motor when the device is working.

[0013] In order to improve the reliability of the connection, preferably, a shaft connecting hole is provided at the center of the flange for the tail of the motor shaft to be tightly inserted.

[0014] In order to further facilitate the installation operation, preferably, the mounting hole of the flange is opened along the circumferential direction, and correspondingly, the rear end of the inner tube is opened along the circumferential direction with an assembly hole that can be connected to the mounting hole of the flange.

[0015] Preferably, the flange is further provided with a mesh cover which can be fixedly connected to the flange.

[0016] In order to effectively increase the diameter of the inner drum as much as possible while ensuring the strength of the outer drum, preferably, the outer drum is provided with a cutout on both symmetrical sides in the width direction of the washing machine casing, and the central angle corresponding to each cutout on the cross section of the outer drum is at least equal to 10°.

[0017] The technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a washing and drying machine, including an inner drum rotatably arranged in an outer drum, characterized in that: the inner drum adopts the washing inner drum installation structure as described above.

[0018] Compared with the prior art, the utility model has the following advantages: by cutting a notch in the outer drum, the notch can apply axial pressure to the flange when the motor shaft is installed, and by adopting an interference fit structure between the motor shaft and the bearing, the disturbance of the inner drum during operation can be effectively reduced, thereby reducing the stress deformation of the motor shaft in the high-speed dehydration working state and reducing the dehydration noise; at the same time, the notch allows the size of the outer drum in the width direction of the casing to be expanded to be equal to the width of the casing, and the expansion of the outer drum allows the size of the inner drum along the width direction of the casing to be effectively increased, so that when the casing size of the washing machine remains unchanged, the diameter of the inner drum can be increased to the maximum extent, the volume of the inner drum can be increased, a small volume and a large capacity can be achieved, and the washing and drying effects are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the assembly structure of the inner drum and outer drum of the washer-dryer according to an embodiment of the utility model (without the end cover).

[0020] Figure 2 This is a complete schematic diagram of the inner drum and outer barrel assembly structure of the washer-dryer according to an embodiment of the utility model.

[0021] Figure 3 This is a cross-sectional view of the inner drum and outer barrel assembly of the washer-dryer implemented in the present invention.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the inner drum of the washer-dryer implemented in the present utility model.

[0023] Figure 5 This is a schematic diagram of the assembly structure of the inner drum component of the washer-dryer implemented in the present utility model.

[0024] Figure 6for Figure 5 An exploded perspective view of the inner barrel assembly is shown. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] The present embodiment discloses a washer-dryer, which includes a casing (not shown), in which an outer barrel 1, a washing inner drum 2, a driving unit and a shock-absorbing unit are arranged, wherein the washing inner drum 2 is rotatably arranged in the outer barrel 1, and the washing inner drum 2 can accommodate washed clothes, the driving unit is generally a motor assembly and can drive the washing inner drum 2 to rotate, and the shock-absorbing unit is arranged between the washing inner drum 2 and the casing, and the casing, the shock-absorbing unit and the driving unit are all existing technologies and are not described in detail here.

[0027] In this embodiment, the horizontal direction is set as the casing width W, the vertical direction is set as the casing depth D, and the vertical direction is set as the casing height H; the outer tub 1 is provided with a cutout 11 on at least one side along the casing width W of the washing machine, in order to facilitate assembly and maximize the diameter of the washing inner tub 2, such as Figure 1 , Figure 2 As shown, the outer barrel 1 of this embodiment is provided with a notch 11 on both symmetrical sides in the width W direction of the casing, and each notch 11 is provided with an end cover 3 that can close the notch 11. In order to reduce the vibration of the casing and ensure the sealing and reliability of the connection, the end cover 3 can be a flexible sealing cover 73 that can close the notch 11, that is, the end cover 3 and the shell of the outer barrel 1 are flexibly connected, and the opening size of the flexible sealing cover 73 is adapted to the opening size of the notch 11. Therefore, the sealing cover 73 of the flexible structure only needs to be installed once, which can not only realize the sealing of the notch 11, but also realize the flexible connection, thereby preventing the vibration transmitted to the outer barrel 1 by the washing inner drum 2 during operation from being transmitted to the casing.

[0028] In order to make full use of the internal space of the casing and maximize the capacity of the washing inner drum 2, the minimum distance between the end cover 3 and the casing corresponding to the side of the end cover 3 can be zero. Generally, the distance between the end cover 3 and the casing can be greater than or equal to zero. When the distance between the end cover 3 and the casing is zero, the end cover 3 directly contacts the casing. As long as the necessary gap between the outer tub 1 and the washing inner drum 2 is ensured when the washing machine is working, the diameter of the outer tub 1 can be expanded to the maximum, and accordingly, the diameter of the washing inner drum 2 can also be maximized.

[0029] Among them, the central angle corresponding to the incision 11 cannot be too small, otherwise the diameter of the washing inner drum 2 cannot be effectively expanded. The central angle corresponding to each incision 11 on the cross section of the outer drum 1 is at least equal to 10° (that is, ≥10 degrees). The larger the central angle corresponding to the incision 11, the greater the increase in the diameter of the washing inner drum 2. On the premise that the strength of the outer drum 1 can be guaranteed, theoretically, the larger the central angle corresponding to the incision 11, the better.

[0030] The rear end of the washing inner drum 2 of this embodiment is provided with an inner drum assembly to which an external drive unit can be connected. Usually, due to the limitation of the installation space, in the prior art, the motor shaft 6 included in the inner drum assembly and the bearing are mostly clearance-fitted. However, when the clothes are dehydrated, the clearance-fitting method makes it easy for the motor shaft 6 of the inner drum assembly to deform under the action of centrifugal force and collide with the bearing to produce noise.

[0031] In order to reduce the disturbance when the washing inner drum 2 is working and reduce the noise, Figure 3 to Figure 6 As shown, the inner cylinder assembly of this embodiment adopts the following installation structure: the inner cylinder assembly includes a flange 4 and a bearing seat 5, and the motor shaft 6 and the bearing are arranged in the bearing seat 5. In order to facilitate installation, the center of the flange 4 is provided with a shaft connecting hole 42 for the rear end of the motor shaft 6 to be inserted. The flange 4 and the rear end of the motor shaft 6 are tightly connected. In order to ensure the tightness and reliability of the installation, the end face of the flange 4 is a plane perpendicular to the axis of the motor shaft 6;

[0032] The bearing includes a first bearing 71 and a second bearing 72 arranged in the bearing seat 5, wherein the front portion of the motor shaft 6 is a stepped shaft including a small head end 61 and a large head end 62, the first bearing 71 is arranged at the small head end 61 of the motor shaft 6, the second bearing 72 is arranged at the large head end 62 of the motor shaft 6, and the front portion of the motor shaft 6 and each bearing are interference fit; the motor shaft 6 is made into a stepped shaft structure, which can facilitate the rapid installation of the motor shaft 6 and realize the axial limit of the bearing;

[0033] The motor shaft 6 is also provided with a sealing cover 73 that can realize water sealing. The sealing cover 73 can prevent water from entering the motor when the device is working.

[0034] In order to further facilitate the installation operation, the flange 4 is provided with mounting holes 41 along the circumference. Accordingly, the rear end 21 of the washing inner drum 2 is provided with assembly holes 211 along the circumference that can be connected to the mounting holes 41 of the flange 4. The flange 4 and the washing inner drum 2 can be tightened by screws. After the installation is completed, the open end of the mounting hole 41 is blocked with a plug to prevent water leakage and air leakage. The flange 4 is also provided with a mesh cover 8 that can be fixedly connected to the flange 4, see Figure 6 The mesh cover 8 is provided with a fixing hole 81 corresponding to the mounting hole 41 of the flange 4 .

[0035] In this embodiment, the cutouts 11 are opened on both sides of the outer barrel 1, and the cutouts 11 just allow the mounting holes 41 of the flange 4 to be exposed, thereby providing an effective operating space, and being able to apply pressure on the end surface of the flange 4 to press the motor shaft 6 into the bearing, thereby achieving an interference fit between the motor shaft 6 and the bearing, which not only reduces the stress deformation of the motor shaft 6 during high-speed dehydration and reduces the noise during machine dehydration, but also reduces the disturbance of the inner drum assembly under the action of centrifugal force, thereby reducing the gap between the inner drum and the outer barrel 1, and further ensuring the effective increase in the diameter of the washing inner drum 2.

[0036] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A washing inner drum installation structure with an outer drum cutout, wherein the washing inner drum (2) is rotatably arranged in the outer drum (1), characterized in that: The rear end of the washing inner drum (2) is provided with an inner drum assembly that can be externally connected to a driving component, the inner drum assembly includes a flange (4) and a bearing seat (5), a motor shaft (6) and a bearing are arranged in the bearing seat (5), wherein the motor shaft (6) and the bearing are interference fit, and the flange (4) and the motor shaft (6) are tightly connected; the outer drum (1) is provided with a cutout (11) on at least one side along the width direction of the washing machine casing, the mounting hole (41) of the flange (4) can be exposed in the cutout (11), and the cutout (11) is provided with an end cover (3) that can close the cutout (11), and the end cover (3) and the outer drum (1) are flexibly connected.

2. The washing inner drum installation structure with outer drum cutout according to claim 1, characterized in that: The minimum distance between the end cover (3) and the casing corresponding to one side of the end cover (3) is zero.

3. The washing inner drum installation structure with outer drum cutout according to claim 1, characterized in that: The end cover (3) is a flexible sealing cover (73) capable of closing the incision (11), and the opening size of the flexible sealing cover (73) is adapted to the opening size of the incision (11).

4. The washing inner drum installation structure with outer drum cutout according to claim 1, characterized in that: The motor shaft (6) is a stepped shaft including a small head end (61) and a large head end (62), and the bearing includes a first bearing (71) and a second bearing (72) which are arranged in a bearing seat (5), wherein the first bearing (71) is arranged at the small head end (61) of the motor shaft (6), and the second bearing (72) is arranged at the large head end (62) of the motor shaft (6).

5. The washing inner drum installation structure with outer drum cutout according to claim 1, characterized in that: A sealing cover (73) is also provided on the motor shaft (6).

6. The washing inner drum installation structure with outer drum cutout according to claim 1, characterized in that: The center of the flange (4) is provided with a shaft connection hole (42) into which the tail of the motor shaft (6) can be inserted.

7. The washing inner drum installation structure with outer drum cutout according to claim 1, characterized in that: The mounting hole (41) of the flange (4) is opened along the circumferential direction, and correspondingly, the rear end of the inner tube is opened along the circumferential direction with an assembly hole (21) that can be connected to the mounting hole (41) of the flange (4).

8. The washing inner drum installation structure with outer drum cutout according to claim 1, characterized in that: The flange (4) is also provided with a mesh cover (8) which can be fixedly connected to the flange (4).

9. The washing inner drum installation structure with outer drum cutout according to claim 1, characterized in that: The outer barrel (1) is provided with a notch (11) on two symmetrical sides in the width direction of the washing machine casing, respectively, and the central angle corresponding to each notch (11) on the cross section of the outer barrel (1) is at least equal to 10°.

10. A washer-dryer, comprising an outer tub (1) and an inner tub rotatably arranged in the outer tub (1), characterized in that: The inner drum adopts the washing inner drum (2) installation structure as described in any one of claims 1 to 9.

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