Shaft sleeve, outer cylinder and clothes processing device

Abstract

The invention belongs to the technical field of clothes processing devices, and discloses a shaft sleeve, an outer cylinder and a clothes processing device. The shaft sleeve comprises a bearing installation body, an outer ring body and a first radial supporting body. A bearing mounting cavity is formed in the bearing mounting body; the outer ring body and the bearing installation body are coaxially arranged, and the outer ring body is located on the outer circle of the bearing installation body. The first radial supporting body extends in the radial direction of the bearing installation body, the first radial supporting body is connected between the bearing installation body and the outer ring body, a motor connecting column is arranged at the end, connected with the outer ring body, of the first radial supporting body, and the side face of the motor connecting column protrudes relative to the outer side face of the outer ring body. An overlarge flash gap between the shaft sleeve and the outer barrel body can be avoided, and the overall supporting strength of the outer barrel is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clothes treatment device, and in particular to a shaft sleeve, an outer drum and a clothes treatment device. BACKGROUND

[0002] The drum washing machine comprises an inner drum for washing and an outer drum for storing water. The outer drum is generally made of plastic material, and a shaft sleeve is arranged at the center position of the bottom of the outer drum, and a bearing is mounted on the shaft sleeve. An inner drum shaft is fixed at the rear center of the inner drum, and the inner drum shaft passes through the bearing in the shaft sleeve to realize the rotation of the inner drum relative to the outer drum.

[0003] Generally, the shaft sleeve is made of cast aluminum material, and the outer drum is made of injection molding material. After the shaft sleeve is cast, the shaft sleeve is integrally formed with the outer drum through the injection molding process.

[0004] However, due to the different materials of the shaft sleeve and the outer drum, the shrinkage amounts of the two are different after injection molding, and the shrinkage amount of the plastic part is relatively large, which causes a large flash gap between the outer drum body and the shaft sleeve, affecting the strength of the washing machine. SUMMARY

[0005] The present application aims to provide a shaft sleeve, an outer drum and a clothes treatment device, which can avoid the technical problem of a large flash gap between the outer drum body and the shaft sleeve, affecting the strength of the outer drum.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

[0007] The shaft sleeve comprises:

[0008] A bearing mounting body, wherein a bearing mounting cavity is arranged in the bearing mounting body;

[0009] An outer ring body coaxially arranged with the bearing mounting body and located at the outer ring of the bearing mounting body;

[0010] A first radial support body extending along the radial direction of the bearing mounting body and connected between the bearing mounting body and the outer ring body, wherein one end of the first radial support body connected with the outer ring body is provided with a motor connecting column, and the side surface of the motor connecting column protrudes relative to the outer side surface of the outer ring body.

[0011] Optionally, a protrusion is arranged on at least one side surface of the first radial support body in the annular space between the bearing mounting body and the outer ring body.

[0012] Optionally, the protrusions are arranged on the opposite two side surfaces of the first radial support body, and the protrusions on the opposite two side surfaces of the first radial support body are symmetrically arranged; or

[0013] The protrusions on the opposite two side surfaces of the first radial support body are staggered.

[0014] Optionally, the shaft sleeve further comprises a second radial support body, the first end of the bearing mounting body protrudes relative to the first end of the outer ring body, and the second radial support body is connected between the bearing mounting body and the outer ring body.

[0015] Optionally, the axial dimension of the outer ring body is smaller than the axial dimension of the bearing mounting body, the axial dimension of the second radial support body is smaller than the axial dimension of the bearing mounting body, and the end surface of the second radial support body is provided with a top rib extending towards the first end of the bearing mounting body.

[0016] Optionally, the inner ring surface of the bearing mounting body is provided with a shaft sleeve positioning groove, and the cross section of the shaft sleeve positioning groove is rectangular along a plane parallel to the radial direction of the shaft sleeve.

[0017] Optionally, the surface of the shaft sleeve in contact with the outer barrel body is provided with a convex structure.

[0018] The outer barrel comprises:

[0019] an outer barrel body;

[0020] The shaft sleeve described above, the outer barrel body is integrally formed with the shaft sleeve by injection molding, and the outer barrel body is coaxially arranged with the shaft sleeve.

[0021] Optionally, the barrel bottom outer surface of the outer barrel body is integrally formed with a motor positioning member, and the motor positioning member abuts against the end surface of the first radial support body of the shaft sleeve.

[0022] The laundry treating apparatus comprises an inner barrel, and further comprises the outer barrel described above, the inner barrel is rotatably arranged in the outer barrel body of the outer barrel, and the inner barrel shaft is rotatably arranged in the bearing mounting cavity of the shaft sleeve of the outer barrel.

[0023] The present application has the following advantages:

[0024] The shaft sleeve provided by the present application sets the motor connecting column at the end where the first radial support body and the outer ring body are connected, so that the motor connecting column functions as a reinforcing rib, thereby improving the stability of the connection between the first radial support body and the outer ring body. The side surface of the motor connecting column protrudes relative to the outer surface of the outer ring body, and when the outer barrel body and the shaft sleeve are integrally injection molded, the part of the motor connecting column protruding relative to the outer surface of the outer ring body can prevent the plastic from shrinking and deforming, so that the plastic on the outer barrel body in contact with the part of the motor connecting column protruding relative to the outer surface of the outer ring body can be tightly attached to the shaft sleeve, thereby avoiding too large flash between the shaft sleeve and the outer barrel body and ensuring the overall support strength of the outer barrel.

[0025] The outer cylinder and the clothes processing device provided by the application both comprise the shaft sleeve, so that the flash gap between the shaft sleeve and the outer cylinder body is avoided, and the support strength of the whole outer cylinder is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of the contents of the embodiments of the present application and the drawings.

[0027] Figure 1 is a first view schematic diagram of the shaft sleeve provided by the embodiments of the present application;

[0028] Figure 2 is a second view schematic diagram of the shaft sleeve provided by the embodiments of the present application;

[0029] Figure 3 is a third view schematic diagram of the shaft sleeve provided by the embodiments of the present application; Figure 2 is an enlarged view of A in FIG. 6;

[0030] Figure 4 is a fourth view schematic diagram of the shaft sleeve provided by the embodiments of the present application;

[0031] Figure 5 is a first view schematic diagram of the outer cylinder provided by the embodiments of the present application;

[0032] Figure 6 is a second view schematic diagram of the outer cylinder provided by the embodiments of the present application;

[0033] Figure 7 is a third view schematic diagram of the outer cylinder provided by the embodiments of the present application;

[0034] Figure 8 is a connection schematic diagram of the partial structure of the shaft sleeve and the outer cylinder body provided by the embodiments of the present application;

[0035] Figure 9 is an enlarged view of B in FIG. 8; Figure 8

[0036] is a partial structure schematic diagram of the outer cylinder body in FIG. 8. Figure 10 Figure 8 in the drawings:

[0037] in the drawings:

[0038] 10, outer cylinder body; 101, motor positioning member; 1011, outer support part; 1012, inner support part; 1013, transition part; 1014, connecting part; 102, groove body; 103, convex ridge; ​

[0039] 1, bearing mounting body; 11, bearing mounting cavity; 12, shaft sleeve positioning groove;

[0040] 2, outer ring body;

[0041] 3, first radial support body; 31, motor connecting column; 32, protrusion;

[0042] 4, second radial support body; 41, top rib. DETAILED DESCRIPTION

[0043] The application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application, and not to limit the application. In addition, it should be noted that only the parts related to the application are shown in the drawings for the convenience of description, and not all the structures.

[0044] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0045] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0046] In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0047] Embodiment one

[0048] Reference Figures 1-7The embodiment provides a shaft sleeve which is applied to an outer drum body 10 of a drum washing machine and can guarantee the structural strength of the outer drum.

[0049] Specifically, referring to Figure 1 In the embodiment, the shaft sleeve comprises a bearing mounting body 1, an outer ring body 2 and a first radial support body 3.

[0050] The bearing mounting body 1 is internally provided with a bearing mounting cavity 11.

[0051] The outer ring body 2 is coaxially arranged with the bearing mounting body 1 and located at the outer ring of the bearing mounting body 1.

[0052] The first radial support body 3 extends along the radial direction of the bearing mounting body 1, is connected between the bearing mounting body 1 and the outer ring body 2, and is provided with a motor connecting column 31 at the end connected with the outer ring body 2. The side surface of the motor connecting column 31 protrudes relative to the outer side surface of the outer ring body 2.

[0053] Further, in the embodiment, the axis of the motor connecting column 31 is parallel to the axis of the outer ring body 2, and the length of the motor connecting column 31 is the same as the length of the first radial support body 3 along the axis direction of the outer ring body 2.

[0054] It should be noted that, in the embodiment, the axis direction of the shaft sleeve, the axis direction of the bearing mounting body 1 and the axis direction of the outer ring body 2 are consistent.

[0055] Specifically, referring to Figure 6 and Figure 7 When the shaft sleeve is applied to the outer drum of the drum washing machine, the inner drum of the drum washing machine is rotatably arranged in the outer drum body 10. In order to realize the stable rotation of the inner drum, a bearing is arranged in the bearing mounting cavity 11 of the shaft sleeve, the inner drum shaft of the inner drum passes through the bearing, and the bearing supports the rotating inner drum shaft. In order to realize the rotation of the inner drum shaft, the drum washing machine further comprises a motor, the motor is mounted on the outer surface of the drum bottom of the outer drum body 10; specifically, the motor is locked on the shaft sleeve through the motor connecting column 31 and the locking piece, and the output shaft of the motor is drivingly connected with the inner drum shaft.

[0056] Further specifically, the number of the first radial support bodies 3 is multiple, and the multiple first radial support bodies 3 are arranged at intervals along the circumferential direction of the bearing mounting body 1. Preferably, the multiple first radial support bodies 3 are arranged at equal intervals along the circumferential direction of the bearing mounting body 1.

[0057] Preferably, in the embodiment, the number of the first radial support bodies 3 is four, and the four first radial support bodies 3 can form stable fastening of the motor.

[0058] The motor connecting column 31 is arranged at the end of the first radial support body 3 connected with the outer ring body 2, which has the following advantages. On the one hand, the motor connecting column 31 functions as a reinforcing rib, improving the stability of the connection between the first radial support body 3 and the outer ring body 2. On the other hand, the length of the motor connecting column 31 is the same as that of the first radial support body 3 along the axial direction of the outer ring body 2, and the whole end surface of the first radial support body 3 in contact with the motor can support the motor, ensuring stable support of the motor.

[0059] Meanwhile, the side surface of the motor connecting column 31 protrudes relative to the outer surface of the outer ring body 2, and when the outer cylinder body 10 is integrally injection molded with the shaft sleeve, the part of the motor connecting column 31 protruding relative to the outer surface of the outer ring body 2 can prevent plastic shrinkage deformation, so that the plastic of the outer cylinder body 10 in contact with the part of the motor connecting column 31 protruding relative to the outer surface of the outer ring body 2 can be closely attached to the shaft sleeve, avoiding too large flash between the shaft sleeve and the outer cylinder body 10, and ensuring the support strength of the whole outer cylinder.

[0060] In the prior art, the outer surface of the outer ring body is smooth, and the motor connecting column is generally arranged at the middle position of the radial support body, which results in poor strength of the connection between the radial support body and the outer ring body, and the dimension of the radial support body along the axial direction of the shaft sleeve is small at the position between the motor connecting column and the outer ring body, and the radial support body does not contact the motor, that is, the contact area of the radial support body with the motor is small, and the support of the motor is slightly poor.

[0061] In the embodiment, the motor connecting column 31 is arranged at the end of the first radial support body 3 connected with the outer ring body 2, and the length of the motor connecting column 31 is the same as that of the first radial support body 3 along the axial direction of the outer ring body 2, so that the whole end surface of the first radial support body 3 can support the motor, the contact area between the shaft sleeve and the motor is increased, and stable support of the motor is formed, ensuring the stability of the rotation of the inner cylinder.

[0062] Further preferably, referring to Figure 2 and Figure 3 In the embodiment, the inner ring surface of the bearing mounting body 1 is provided with a shaft sleeve positioning groove 12, and the cross section of the shaft sleeve positioning groove 12 is rectangular along a plane parallel to the radial direction of the shaft sleeve.

[0063] The shaft sleeve positioning groove 12 is used for positioning the shaft sleeve when the outer cylinder body 10 is injection molded.

[0064] In the prior art, the cross section of the shaft sleeve positioning groove is generally arc-shaped, and in the embodiment, the cross section of the shaft sleeve positioning groove 12 is rectangular, which facilitates reduction of the manufacturing difficulty of the casting mold of the shaft sleeve and improvement of the machining precision of the shaft sleeve.

[0065] Of course, in other embodiments, the shape of the shaft sleeve positioning groove 12 can also be set as required, and is not limited here.

[0066] Further preferably, the cross-sectional area of the shaft sleeve positioning groove 12 gradually increases along the axial direction of the bearing mounting body 1. That is, along the axial direction of the bearing mounting body 1, the shaft sleeve positioning groove 12 has a shape with a large opening at one end and a small opening at the other end, facilitating the quick insertion of the positioning member into the shaft sleeve positioning groove 12.

[0067] Preferably, the end of the shaft sleeve positioning groove 12 close to the outer ring body 2 has a large opening, and the other end has a small opening.

[0068] In this way, before the outer cylinder body 10 is formed by injection molding, the positioning member is quickly inserted into the shaft sleeve positioning groove 12; after the injection molding of the outer cylinder body 10 is completed, the positioning member is also quickly pulled out.

[0069] Further, in the annular space between the bearing mounting body 1 and the outer ring body 2, a protrusion 32 is arranged on at least one side of the first radial support body 3.

[0070] The side of the first radial support body 3 is provided with a protrusion 32. The arrangement of the protrusion 32 can play the role of a reinforcing rib, ensuring the structural strength of the first radial support body 3, and further ensuring the overall strength of the shaft sleeve. On the other hand, the protrusion 32 can prevent plastic shrinkage and deformation, so that the plastic of the outer cylinder body 10 in contact with the protrusion 32 can be tightly attached to the shaft sleeve, avoiding excessive flash between the shaft sleeve and the outer cylinder body 10, and ensuring the overall support strength of the outer cylinder.

[0071] That is, during the shrinkage process of the plastic of the outer cylinder body, the protrusion 32 and the motor connecting column 31 can both prevent plastic shrinkage and deformation, avoiding excessive flash between the plastic and the shaft sleeve during the shrinkage process, which affects the overall structural strength of the outer cylinder.

[0072] Specifically, in the present embodiment, the protrusion 32 is a rib body extending in the direction parallel to the axis of the shaft sleeve. Alternatively, the cross section of the rib body is arc-shaped.

[0073] Of course, in other embodiments, the protrusion 32 can also be a protrusion. Preferably, when the protrusion 32 is a protrusion, the side of the first radial support body 3 can be provided with a plurality of protrusions, and the plurality of protrusions are arranged in an array.

[0074] Preferably, the opposite two sides of the first radial support body 3 are both provided with protrusions 32. In this way, the protrusions 32 can further prevent plastic shrinkage and deformation, avoiding excessive flash between the plastic and the shaft sleeve during the shrinkage process, which affects the overall structural strength of the outer cylinder.

[0075] Alternatively, the protrusions 32 on the opposite two sides of the first radial support body 3 are symmetrically arranged; or

[0076] The protrusions 32 on the opposite sides of the first radial support body 3 are staggered.

[0077] Specifically, referring to Figure 1 In this embodiment, the protrusions 32 on the opposite sides of the first radial support body 3 are symmetrically arranged, which facilitates processing.

[0078] Of course, in other embodiments, the protrusions 32 on the opposite sides of the first radial support body 3 are staggered; specifically, the protrusions 32 on the opposite sides of the first radial support body 3 are staggered along the radial direction of the shaft sleeve.

[0079] Optionally, the number of the protrusions 32 on each side of the first radial support body 3 can be one or multiple, which can be set as needed without further limitation here.

[0080] Further preferably, the surface of the protrusion 32 is provided with a concave-convex structure. In this way, the effect of the protrusion 32 on preventing plastic shrinkage deformation is more favorable.

[0081] Further preferably, a protrusion structure can be provided on the surface of the shaft sleeve that contacts the outer barrel body 10. Specifically, a concave-convex texture structure is provided on the surface of the shaft sleeve that contacts the outer barrel body 10, that is, a protrusion structure is formed, thereby sufficiently reducing the flash between the shaft sleeve and the outer barrel body 10.

[0082] Further, referring to Figure 5 In this embodiment, the shaft sleeve further comprises a second radial support body 4, the first end of the bearing mounting body 1 protrudes relative to the first end of the outer ring body 2, and the second radial support body 4 is connected between the bearing mounting body 1 and the outer ring body 2.

[0083] The provision of the second radial support body 4 can further ensure the structural strength of the shaft sleeve.

[0084] The axial dimension of the outer ring body 2 is smaller than the axial dimension of the bearing mounting body 1, the axial dimension of the second radial support body 4 is smaller than the axial dimension of the bearing mounting body 1, and the end surface of the second radial support body 4 is provided with a top rib 41 extending towards the first end of the bearing mounting body 1.

[0085] In the prior art, the axial dimension of the radial support body of the shaft sleeve that is not provided with a motor connecting column is the same as the axial dimension of the outer ring body; in this embodiment, the axial dimension of the second radial support body 4 is the same as the axial dimension of the outer ring body 2 and smaller than the axial dimension of the bearing mounting body 1, and the end surface of the second radial support body 4 is provided with a top rib 41 extending towards the first end of the bearing mounting body 1. The provision of the top rib 41 can prevent plastic shrinkage deformation of the outer barrel body 10 when the outer barrel body 10 is injection molded.

[0086] Further preferably, the sum of the axial dimensions of the top rib 41 and the second radial support body 4 is less than the axial dimension of the bearing mounting body 1; in this way, since the top rib 41 extends towards the first end of the bearing mounting body 1 and does not extend to the level of the first end of the bearing mounting body 1, after the outer cylinder body 10 is formed from plastic material, a groove is formed on the outer cylinder body 10 which is adapted to the second radial support body 4 and the top rib 41 and the inner top end of the groove abuts against the free end of the top rib 41, and a convex ridge is formed on the outer cylinder body 10 corresponding to the groove. That is, the convex ridge has the groove formed inside.

[0087] Preferably, in the embodiment, the groove is only open on the side surface, the top rib 41 and the second radial support body 4 are located in the groove, the free end of the top rib 41 can abut against the bottom surface of one end of the groove, and the free end of the second radial support body 4 abuts against the bottom surface of the other end of the groove, which together prevent the plastic of the outer cylinder body 10 from shrinking and deforming, and also prevent the outer cylinder body 10 from being displaced relative to the shaft sleeve during shrinkage.

[0088] Optionally, the thickness of the top rib 41 is uniform; or

[0089] The thickness of the top rib 41 gradually increases in the direction close to the first end of the bearing mounting body 1; or

[0090] The end of the top rib 41 close to the first end of the bearing mounting body 1 is provided with a top plate, and the projection of the top plate covers the projection of the top rib 41 in the axial direction of the bearing mounting body 1.

[0091] Optionally, in one embodiment, the thickness of the top rib 41 is uniform, which facilitates processing and manufacturing.

[0092] Optionally, in another embodiment, the thickness of the top rib 41 gradually increases in the direction close to the first end of the bearing mounting body 1, which makes the function of the top rib 41 of preventing the plastic of the outer cylinder body 10 from shrinking and deforming even better.

[0093] Optionally, in still another embodiment, the thickness of the top rib 41 gradually increases in the direction close to the first end of the bearing mounting body 1, which also ensures the function of the top rib 41 of preventing the plastic of the outer cylinder body 10 from shrinking and deforming.

[0094] Preferably, in the embodiment, the end of the top rib 41 close to the first end of the bearing mounting body 1 is provided with a top plate (not shown in the figure), and the projection of the top plate along the axis direction of the bearing mounting body 1 covers the projection of the top rib 41; in this way, on the one hand, the effect of the top rib 41 on preventing the plastic shrinkage deformation of the outer cylinder body 10 is better; on the other hand, due to the presence of the top plate, the end of the groove body in contact with the top rib 41 is formed with a top plate accommodating cavity matched with the top plate, and the top plate is placed in the top plate accommodating cavity; during the plastic shrinkage of the outer cylinder body 10, the top plate is always placed in the top plate accommodating cavity and cannot be displaced into the groove body, and in this way, displacement of the outer cylinder body 10 relative to the shaft sleeve during the plastic shrinkage can be avoided.

[0095] Embodiment two

[0096] Referring to Figures 6-10 , the embodiment provides an outer cylinder.

[0097] Specifically, the outer cylinder is an outer cylinder of a clothes treatment device. Further, the clothes treatment device is a drum washing machine.

[0098] Specifically, referring to Figure 6 and Figure 7 , the outer cylinder comprises an outer cylinder body 10 and the shaft sleeve in the embodiment one.

[0099] The outer cylinder body 10 is integrally formed with the shaft sleeve by injection molding, and the outer cylinder body 10 is coaxially arranged with the shaft sleeve.

[0100] Specifically, the cylinder bottom of the outer cylinder body 10 is coaxially arranged with the shaft sleeve.

[0101] The outer cylinder provided by the embodiment is used, and the inner cylinder of the washing machine is rotatably arranged in the outer cylinder body 10 of the outer cylinder. In order to realize the rotation of the inner cylinder, a bearing is arranged in the bearing mounting cavity 11 of the shaft sleeve, and the inner cylinder shaft of the inner cylinder penetrates through the bearing, and the bearing supports the rotating inner cylinder shaft. In order to realize the rotation of the inner cylinder shaft, the drum washing machine further comprises a motor, and the motor is mounted on the outer surface of the cylinder bottom of the outer cylinder body 10; specifically, the motor is locked on the shaft sleeve through the motor connecting column 31 and the locking assembly, and the motor output shaft is drivingly connected with the inner cylinder shaft.

[0102] The outer cylinder comprises the shaft sleeve in the embodiment one. In the shaft sleeve, the motor connecting column 31 is arranged at one end connected with the outer ring body 2 of the first radial support body 3, in this way, on the one hand, the motor connecting column 31 plays the role of a reinforcing rib, and the stability of the connection between the first radial support body 3 and the outer ring body 2 is improved. On the other hand, along the axis direction of the outer ring body 2, the length of the motor connecting column 31 is the same as the length of the first radial support body 3, and the entire end surface of the first radial support body 3 in contact with the motor can support the motor, so as to ensure the stable support of the motor.

[0103] Meanwhile, the side of the motor connecting column 31 protrudes relative to the outer side of the outer ring body 2, and when the outer cylinder body and the shaft sleeve are integrally injection molded, the part of the motor connecting column 31 protruding relative to the outer side of the outer ring body 2 can play a role in preventing plastic shrinkage deformation, so that the plastic of the outer cylinder body in contact with the part of the motor connecting column 31 protruding relative to the outer side of the outer ring body 2 can be closely attached to the shaft sleeve, avoiding that the flash between the shaft sleeve and the outer cylinder body is too large, and ensuring the support strength of the whole outer cylinder.

[0104] It should be noted that after the outer cylinder body 10 is injection molded, the outer ring body 2 is wrapped in the plastic of the outer cylinder body 10.

[0105] Referring to Figures 7-9 In the embodiment, the motor positioning member 101 is integrally formed on the outer surface of the cylinder bottom of the outer cylinder body 10. The motor positioning member 101 abuts against the end surface of the first radial support body 3 of the shaft sleeve.

[0106] In the prior art, before the motor is installed on the outer surface of the cylinder bottom of the outer cylinder body, a ring-shaped motor positioning collar is generally installed on the outer surface of the cylinder bottom of the outer cylinder body, and the motor is provided with a ring-shaped motor positioning groove matched with the motor positioning collar.

[0107] In the embodiment, the motor positioning member 101 is integrally formed on the outer surface of the cylinder bottom of the outer cylinder body 10, and the motor is positioned by the motor positioning member 101. In this way, the step of installing the motor positioning collar can be omitted, and the number of parts is reduced.

[0108] Specifically, the motor positioning member 101 cooperates with the ring-shaped motor positioning groove on the motor to position the motor.

[0109] The motor positioning member 101 abuts against the end surface of the first radial support body 3 of the shaft sleeve. After the outer cylinder body 10 is injection molded, the motor positioning member 101 can limit the movement of the shaft sleeve in the direction towards the motor positioning member 101, so as to avoid displacement of the shaft sleeve.

[0110] Preferably, referring to Figure 8 In the embodiment, the motor positioning member 101 is integrally formed on the outer surface of the cylinder bottom of the outer cylinder body 10, and the motor positioning member 101 abuts against the end surface of the first radial support body 3 of the shaft sleeve, and the plurality of motor positioning members 101 are arranged at intervals along the circumference of the bearing mounting body 1 of the shaft sleeve.

[0111] Specifically, the plurality of motor positioning members 101 are arranged at equal intervals along a circumference, and the plurality of motor positioning members 101 can jointly cooperate with the ring-shaped motor positioning groove of the motor to position the motor; after the motor positioning is completed, a threaded connecting piece is passed through the motor and is screwed and locked to the motor connecting column 31.

[0112] Specifically, the motor connecting column 31 is provided with an inner threaded hole matched with the threaded connecting piece.

[0113] Specifically, referring to Figure 9 , the motor positioning piece 101 comprises an outer supporting part 1011 and two inner supporting parts 1012.

[0114] The outer supporting part 1011 is configured to abut against the outer annular surface of the motor positioning groove of the motor.

[0115] The two inner supporting parts 1012 are respectively located on the two sides of the outer supporting part 1011, and the inner supporting part 1012 is arranged close to the axis of the bearing mounting body 1 relative to the outer supporting part 1011, and the inner supporting part 1012 is configured to abut against the inner annular surface of the motor positioning groove.

[0116] The outer supporting part 1011 and the two inner supporting parts 1012 of one motor positioning piece 101 can form three positioning positions, the outer supporting part 1011 abuts against the outer annular inner surface of the motor positioning groove, and the two inner supporting parts 1012 abut against the inner annular inner surface of the motor positioning groove.

[0117] Preferably, in the embodiment, the number of motor positioning pieces 101 is four; thus, there are four outer supporting parts 1011 abutting against the outer annular inner surface of the motor positioning groove, and there are eight inner supporting parts 1012 abutting against the inner annular inner surface of the motor positioning groove. Thus, the stability and accuracy of the motor positioning are ensured.

[0118] And compared with the annular motor positioning ring in the prior art, the inner surface of the motor positioning groove contacts the motor positioning piece 101 at fewer positions, which facilitates fine adjustment of the position of the motor after the motor is preliminarily positioned, so that the fixing hole on the motor can be centered with the inner threaded hole on the motor connecting column 31.

[0119] Preferably, the inner supporting part 1012 and the outer supporting part 1011 are connected through a transition part 1013, and the thicknesses of the outer supporting part 1011, the inner supporting part 1012 and the transition part 1013 in the axial direction of the bearing mounting body 1 are consistent.

[0120] The inner supporting part 1012 and the outer supporting part 1011 are connected through the transition part 1013, and such arrangement makes the relative positions of the inner supporting part 1012 and the outer supporting part 1011 of the motor positioning piece 101 made of plastic material stable during shrinkage, thereby ensuring the stable positioning of the motor positioning piece 101 to the motor.

[0121] The thicknesses of the outer support part 1011, the inner support part 1012 and the transition part 1013 in the axial direction of the bearing mounting body 1 are consistent, and the thickness of the motor positioning member 101 is also consistent after shrinkage, so that the entire end surface of the motor positioning member 101 can abut against the bottom surface of the motor positioning groove, thereby ensuring the stable positioning of the motor positioning member 101 to the motor.

[0122] Further, referring to Figure 9 In the embodiment, the motor positioning member 101 further comprises a connecting part 1014, which is connected with the outer support part 1011, the inner support part 1012 and the transition part 1013. After injection molding, the connecting part 1014 abuts against the end surface of the first radial support body 3 of the shaft sleeve, and the movement of the shaft sleeve in the direction towards the motor positioning member 101 is limited by the connecting part 1014, thereby avoiding the displacement of the shaft sleeve.

[0123] Preferably, in the axial direction of the outer cylinder, the size of the connecting part 1014 is smaller than that of the outer support part 1011, so as to reduce the contact area of the motor positioning member 101 with the motor positioning groove of the motor, thereby facilitating the fine adjustment of the motor.

[0124] In the embodiment, the shaft sleeve comprises a second radial support body 4, the axial dimension of the outer ring body 2 is smaller than that of the bearing mounting body 1, the first end of the bearing mounting body 1 protrudes relative to the first end of the outer ring body 2, and the second radial support body 4 is connected between the bearing mounting body 1 and the outer ring body 2. The axial dimension of the second radial support body 4 is smaller than that of the bearing mounting body 1, and the end surface of the second radial support body 4 is provided with a top rib 41 extending towards the first end of the bearing mounting body 1.

[0125] In the prior art, the axial dimension of the radial support body of the shaft sleeve without the motor connecting column is the same as that of the outer ring body; in the embodiment, the axial dimension of the second radial support body 4 is smaller than that of the bearing mounting body 1, and the end surface of the second radial support body 4 is provided with the top rib 41 extending towards the first end of the bearing mounting body 1. The top rib 41 can prevent the shrinkage deformation of the plastic of the outer cylinder body 10 during the injection molding of the outer cylinder body 10.

[0126] Further preferably, the sum of the axial dimensions of the top rib 41 and the second radial support body 4 is smaller than that of the bearing mounting body 1. In this way, since the top rib 41 extends towards the first end of the bearing mounting body 1, and the top rib 41 does not extend to be flush with the first end of the bearing mounting body 1.

[0127] Referring to Figure 10After the outer cylinder body 10 is formed, the groove 102 is formed on the outer cylinder body 10 to be matched with the second radial support 4 and the top rib 41, and the inner top end of the groove 102 abuts against the free end of the top rib 41. Corresponding to the groove 102, the convex bead 103 is formed on the outer cylinder body 10. That is, the groove 102 is formed in the convex bead 103.

[0128] Preferably, in the embodiment, the groove 102 is only open on the side, the top rib 41 and the second radial support 4 are located in the groove 102, the free end of the top rib 41 can abut against the bottom surface of one end of the groove 102, and the free end of the second radial support 4 abuts against the bottom surface of the other end of the groove 102, which together prevent the plastic of the outer cylinder body 10 from being deformed due to shrinkage and prevent the outer cylinder body 10 from being displaced relative to the shaft sleeve during shrinkage.

[0129] Embodiment three

[0130] The embodiment provides a clothes treatment device.

[0131] Specifically, the clothes treatment device is a drum washing machine.

[0132] Specifically, in the embodiment, the clothes treatment device includes an inner cylinder and the outer cylinder in the embodiment two, the inner cylinder is rotatably arranged in the outer cylinder body 10 of the outer cylinder, and the inner cylinder shaft of the inner cylinder is rotatably arranged in the bearing mounting cavity 11 of the shaft sleeve.

[0133] In the clothes treatment device provided by the embodiment, in order to realize the rotation of the inner cylinder, a bearing is arranged in the bearing mounting cavity 11 of the shaft sleeve, and the inner cylinder shaft of the inner cylinder passes through the bearing, and the bearing supports the rotating inner cylinder shaft. In order to realize the rotation of the inner cylinder shaft, the drum washing machine further includes a motor, and the motor is mounted on the outer surface of the cylinder bottom of the outer cylinder body 10; specifically, the motor is locked on the shaft sleeve through the motor connecting column 31 and the locking assembly, and the motor output shaft is drivingly connected with the inner cylinder shaft.

[0134] The outer cylinder includes the shaft sleeve in the embodiment one. In the shaft sleeve, the motor connecting column 31 is arranged at one end where the first radial support 3 is connected with the outer ring body 2. In this way, on the one hand, the motor connecting column 31 plays a role of a reinforcing rib, thereby improving the stability of the connection between the first radial support 3 and the outer ring body 2. On the other hand, along the axial direction of the outer ring body 2, the length of the motor connecting column 31 is the same as the length of the first radial support 3, and the entire end surface of the first radial support 3 in contact with the motor can support the motor, thereby ensuring the stable support of the motor.

[0135] Meanwhile, the side of the motor connecting column 31 protrudes relative to the outer side of the outer ring body 2, and when the outer cylinder body and the shaft sleeve are integrally injection molded, the part of the motor connecting column 31 protruding relative to the outer side of the outer ring body 2 can prevent plastic shrinkage deformation, so that the plastic of the outer cylinder body in contact with the part of the motor connecting column 31 protruding relative to the outer side of the outer ring body 2 can be closely attached to the shaft sleeve, avoiding too large flash between the shaft sleeve and the outer cylinder body, and ensuring the support strength of the whole outer cylinder.

[0136] Obviously, the above-mentioned embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A bushing, characterized by, Comprising: a bearing mounting body (1) provided with a bearing mounting cavity (11) inside; an outer ring body (2) coaxially arranged with the bearing mounting body (1) and located at the outer ring of the bearing mounting body (1); a first radial support body (3) extending along the radial direction of the bearing mounting body (1) and connected between the bearing mounting body (1) and the outer ring body (2), one end of the first radial support body (3) being provided with a motor connecting column (31), the side surface of the motor connecting column (31) protruding relative to the outer surface of the outer ring body (2).

2. The bushing of claim 1, wherein, A protrusion (32) is arranged on at least one side surface of the first radial support body (3) in the annular space between the bearing mounting body (1) and the outer ring body (2).

3. The bushing of claim 2, wherein, Both opposite side surfaces of the first radial support body (3) are provided with the protrusion (32), and the protrusions (32) on the opposite side surfaces of the first radial support body (3) are symmetrically arranged; or The protrusions (32) on the opposite side surfaces of the first radial support body (3) are staggered.

4. The bushing of any of claims 1-3, wherein, The shaft sleeve further comprises a second radial support body (4), the first end of the bearing mounting body (1) protruding relative to the first end of the outer ring body (2), and the second radial support body (4) being connected between the bearing mounting body (1) and the outer ring body (2).

5. The bushing of claim 4, wherein, The axial dimension of the outer ring body (2) is smaller than the axial dimension of the bearing mounting body (1), the axial dimension of the second radial support body (4) is smaller than the axial dimension of the bearing mounting body (1), and the end surface of the second radial support body (4) is provided with a top rib (41) extending towards the first end of the bearing mounting body (1).

6. The bushing of any one of claims 1-3, wherein, The inner ring surface of the bearing mounting body (1) is provided with a shaft sleeve positioning groove (12), and the cross section of the shaft sleeve positioning groove (12) is rectangular along a plane parallel to the radial direction of the shaft sleeve.

7. The bushing of any of claims 1-3, wherein, A protrusion structure is arranged on the surface of the shaft sleeve in contact with the outer cylinder body (10).

8. An outer tube characterized by Comprising: an outer cylinder body (10); The shaft sleeve of any one of claims 1-7, the outer cylinder body (10) being integrally formed with the shaft sleeve by injection molding, and the outer cylinder body (10) being coaxially arranged with the shaft sleeve.

9. The outer tube according to claim 8, characterized in that The motor positioning member (101) is integrally formed on the outer surface of the cylinder bottom of the outer cylinder body (10) and abuts against the end surface of the first radial support body (3) of the shaft sleeve. 10.A laundry treating apparatus comprising an inner tub, characterized by, Further comprising the outer cylinder of claim 8 or 9, the inner cylinder being rotatably arranged in the outer cylinder body (10) of the outer cylinder, and the inner cylinder shaft of the inner cylinder being rotatably arranged in the bearing mounting cavity (11) of the shaft sleeve of the outer cylinder.

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