Inner-drum tripod of drum washing machine, tooling fixture, and drum washing machine

Abstract

An inner-drum tripod of a drum washing machine and a drum washing machine. The inner-drum tripod of a drum washing machine comprises: a connecting shaft sleeve; and at least three support arms, each separately manufactured and formed. The support arms are separately welded to the connecting shaft sleeve to form an integral structure. The support arms are uniformly distributed along an outer peripheral wall of the connecting shaft sleeve. The connecting shaft sleeve and the support arms are manufactured separately, thereby reducing requirements on processing equipment and providing greater processing simplicity and flexibility compared to existing one-piece die-casting methods. The finished connecting shaft sleeve and support arms are fixedly connected by welding to form an integral structure, which, relative to existing one-piece die-casting methods, offers simpler and more reliable processing and satisfies the overall rigidity requirements of the inner-drum tripod of a drum washing machine. Hence, production and manufacturing costs are reduced while meeting the overall rigidity requirements of the tripod, providing broad market value.

Description

A drum washing machine inner drum tripod, tool clamp and drum washing machine TECHNICAL FIELD

[0001] The present application relates to the technical field of laundry equipment, in particular to a drum washing machine inner drum tripod, tool clamp and drum washing machine. BACKGROUND

[0002] In the transmission structure of the existing drum washing machine, a tripod is fixedly installed on the inner drum assembly, the tripod is installed in the bearing seat of the outer drum of the drum washing machine as a support structure, the motor drives the tripod to rotate, thereby driving the drum assembly to rotate, realizing the washing and dehydration functions of the washing machine.

[0003] Therefore, as the main power bearing component, the tripod bears a large torque for a long time, and the overall rigidity of the tripod is required to be high. Therefore, the existing tripod is not simply three supporting arms, and a reinforcing structure needs to be designed on the supporting arms. However, the existing tripod is integrally pressure cast by aluminum alloy, which puts high requirements on the pressure casting equipment and process, increases the production cost of the tripod. Moreover, with the long-term use of the washing machine, the working environment of the tripod leads to corrosion and fatigue fracture of the tripod, which increases the replacement cost of the tripod.

[0004] Therefore, the present application is proposed. SUMMARY

[0005] In order to solve the above problems, the present application aims to provide a drum washing machine inner drum tripod and a drum washing machine, which changes the production and manufacturing process of the tripod to reduce the cost of the tripod while meeting the rigidity requirements of the tripod. Specifically, the following technical solutions are adopted:

[0006] A drum washing machine inner drum tripod, comprising:

[0007] A connecting shaft sleeve;

[0008] At least three supporting arms, each of which is separately processed and formed;

[0009] Each of the supporting arms is welded to the connecting shaft sleeve to form an integral structure, and each of the supporting arms is uniformly distributed along the outer peripheral wall of the connecting shaft sleeve.

[0010] As an optional embodiment of the present application, the connecting shaft sleeve has a first shaft section and a second shaft section, the outer diameter of the first shaft section is smaller than that of the second shaft section, and the intersection of the first shaft section and the second shaft section forms a mounting step.

[0011] The support arm has a horizontal arm segment, a first vertical arm segment and a second vertical arm segment connected with two ends of the horizontal arm segment respectively, one end of the horizontal arm segment is arranged on the mounting step and is welded and fixed with the outer peripheral wall of the first shaft segment, one end of the first vertical arm segment and one end of the second vertical arm segment are welded and fixed with the outer peripheral wall of the second shaft segment respectively;

[0012] Optionally, the end of the horizontal arm segment welded and fixed with the outer peripheral wall of the first shaft segment has a circular-arc-shaped socket which is fitted with the outer peripheral wall of the first shaft segment.

[0013] Optionally, the horizontal arm segment is provided with a concave rib.

[0014] As an optional embodiment of the present application, the one end of the first vertical arm segment away from the horizontal arm segment and the one end of the second vertical arm segment away from the horizontal arm segment are both outwardly flanged to form horizontal flanges, the end of the horizontal flange is upwardly flanged to form a vertical flange, the end of the one end of the horizontal flange is obliquely arranged so that the end of the vertical flange does not protrude from the end of the first vertical arm segment and the second vertical arm segment.

[0015] The horizontal flanges of the two adjacent support arms are spliced and fixed by welding, and the vertical flanges of the two adjacent support arms are spliced and fixed by welding.

[0016] As an optional embodiment of the present application, a three-legged support of an inner drum of a drum washing machine comprises an inner drum connecting block, one end of the support arm is welded and fixed with the connecting shaft sleeve, and the other end of the support arm is welded and fixed with the inner drum connecting block.

[0017] As an optional embodiment of the present application, the inner drum connecting block comprises a connecting sheet body and a threaded hole column, the connecting sheet body comprises an integrally formed horizontal connecting sheet body and a vertical connecting sheet body, and the threaded hole column is formed by metal drawing of the vertical connecting sheet body; the vertical flange of the other end of the support arm extends upwardly and protrudes from the horizontal arm segment, the top of the vertical flanges on both sides of the horizontal arm segment is in the same height and is flush, the horizontal connecting sheet body is welded and fixed with the top of the vertical flange, the vertical connecting sheet body is welded and fixed with the end of the horizontal arm segment, the first vertical arm segment, the second vertical arm segment, the horizontal flange and the vertical flange, the threaded hole column is arranged in the region enclosed by the first vertical arm segment, the horizontal flange and the vertical flange, and / or the region enclosed by the second vertical arm segment, the horizontal flange and the vertical flange.

[0018] As an optional embodiment of the present application, the support arm has integrally formed first, second and third support portions along its extending direction, the first and third support portions are horizontally arranged, and the second support portion is arranged obliquely, so that the first and third support portions have a height difference in the axial direction of the connecting shaft sleeve; the end of the first support portion is welded and fixed to the outer peripheral wall of the connecting shaft sleeve, and the end of the third support portion is welded and fixed to the inner cylinder connecting block.

[0019] As an optional embodiment of the present application, the horizontal arm segment, the first vertical arm segment and the second vertical arm segment jointly enclose a first groove, the first vertical arm segment, the horizontal flange and the vertical flange jointly enclose a second groove, and the second vertical arm segment, the horizontal flange and the vertical flange jointly enclose a third groove; the width of the first groove of the first, second and third support portions gradually decreases; the second and third grooves of the first support portion gradually decrease from the end close to the connecting shaft sleeve to the end close to the second support portion; and the second and third grooves of the third support portion gradually increase from the end close to the second support portion to the end close to the inner cylinder connecting block.

[0020] As an optional embodiment of the present application, the inner cylinder three-legged support of the drum washing machine comprises an inner cylinder shaft, the inner cylinder shaft has a connecting shaft sleeve mounting portion, the mounting portion is mounted in the connecting shaft sleeve and is matched by interference fit, and the end of the mounting portion is fixed to the connecting shaft sleeve by welding.

[0021] As an optional embodiment of the present application, the outer peripheral wall of the connecting shaft sleeve is provided with a positioning groove extending in the radial direction, the positioning groove is arranged corresponding to the support arm, each support arm is welded to be an integral structure after being pre-positioned with the positioning groove of the connecting shaft sleeve, and each support arm is uniformly arranged along the outer peripheral wall of the connecting shaft sleeve.

[0022] As an optional embodiment of the present application, the support arm has a horizontal arm segment and first and second vertical arm segments connected to the two ends of the horizontal arm segment respectively, and the end of the first vertical arm segment and the end of the second vertical arm segment are respectively pre-positioned with the positioning groove of the connecting shaft sleeve and welded to be an integral structure.

[0023] As an optional embodiment of the present application, the inner cylinder three-legged support of the drum washing machine comprises an inner cylinder shaft, the inner cylinder shaft has a connecting shaft sleeve mounting portion, the mounting portion is mounted in the connecting shaft sleeve and is matched by interference fit, and the end of the mounting portion is fixed to the connecting shaft sleeve by welding.

[0024] As an optional embodiment of the present application, a sealing sleeve is arranged between the inner drum shaft and the water seal, the water seal has a water seal inner lip arranged on the inner circumferential wall and a water seal end face lip arranged on the water seal end face, the water seal inner lip abuts on the outer circumferential wall of the sealing sleeve to seal, and the water seal end face lip abuts on the end face of the water seal sealing end cover to seal.

[0025] As an optional embodiment of the present application, the water seal sealing end cover has an annular sealing groove on the end face, and the water seal end face lip abuts in the annular sealing groove of the water seal sealing end cover to seal.

[0026] As an optional embodiment of the present application, the connecting sleeve has an integrally formed sleeve body, a first shaft section at one end of the sleeve body and a second shaft section at the other end of the sleeve body, the outer diameters of the first shaft section and the second shaft section are smaller than the outer diameter of the sleeve body, a first mounting step is formed at the intersection of the first shaft section and the sleeve body, and a second mounting step is formed at the intersection of the second shaft section and the sleeve body.

[0027] One end of the horizontal arm section of the support arm is fixed on the first mounting step, and the water seal sealing end cover is limitedly mounted on the second mounting step.

[0028] As an optional embodiment of the present application, the end face of the water seal sealing end cover near the support arm is in contact with and fixedly connected with each support arm.

[0029] As an optional embodiment of the present application, the inner drum three-legged support of the drum washing machine in the embodiment includes an inner drum connecting block, one end of the support arm is fixedly welded with the connecting sleeve, the other end of the support arm is fixedly welded with the inner drum connecting block, and the inner drum connecting block includes a connecting sheet body and a welded nut.

[0030] As an optional embodiment of the present application, the connecting sheet body includes an integrally formed horizontal connecting sheet body and a vertical connecting sheet body, a through hole is formed in the vertical connecting sheet body, and the welded nut is fixedly welded on the vertical connecting sheet body and penetrates through the through hole.

[0031] As an optional embodiment of the present application, the inner drum three-legged support of the drum washing machine in the embodiment includes an inner drum shaft and a sealing cover.

[0032] The connecting sleeve has a hollow channel inside, and the connecting sleeve has opposite first and second end portions.

[0033] One end of the inner drum shaft is inserted and fixedly assembled by the first end of the connecting sleeve.

[0034] The sealing cover covers the second end of the connecting sleeve.

[0035] As an optional embodiment of the present application, a limiting step is arranged on the inner wall of the second end of the connecting sleeve, and the sealing cover is arranged in the hollow channel of the second end of the connecting sleeve and is limited and stopped by the limiting step.

[0036] As an optional embodiment of the present application, the sealing cover comprises a sealing cover body and a sealing plug body which are integrally formed, a limiting boss is arranged between the sealing cover body and the sealing plug body, and the sealing plug body is arranged in the hollow channel of the second end of the connecting sleeve and is limited and stopped by the limiting boss.

[0037] As an optional embodiment of the present application, the three-leg support of the inner drum of the drum washing machine comprises an inner drum connecting block, one end of the support arm is welded and fixed with the connecting sleeve, the other end of the support arm is welded and fixed with the inner drum connecting block, and the inner drum connecting block comprises a connecting main body and a connecting nut which is welded in the connecting main body.

[0038] The connecting main body has an open-end mounting cavity, the connecting nut is welded on the bottom wall of the mounting cavity in the connecting main body, and the mounting cavity open-end of the connecting main body is sleeved on the other end of the support arm and is welded and fixed.

[0039] As an optional embodiment of the present application, the connecting main body comprises a main connecting sheet and a connecting flange which is integrally arranged on the outer periphery of the main connecting sheet, the connecting flange is bent towards one side of the main connecting sheet, and the main connecting sheet and the connecting flange jointly enclose the open-end mounting cavity.

[0040] As an optional embodiment of the present application, the second end of the connecting sleeve has a mounting step.

[0041] The support arm has a horizontal arm segment, a first vertical arm segment and a second vertical arm segment which are respectively connected with two ends of the horizontal arm segment, one end of the horizontal arm segment is arranged on the mounting step and is welded and fixed with the outer peripheral wall of the second end, and one end of the first vertical arm segment and one end of the second vertical arm segment are respectively welded and fixed with the outer peripheral wall of the connecting sleeve.

[0042] The one end of the first vertical arm segment away from the horizontal arm segment and the one end of the second vertical arm segment away from the horizontal arm segment are both outwardly flanged to form horizontal flanges, the end of the horizontal flange is upwardly flanged to form a vertical flange, and the end of the one end of the horizontal flange is obliquely arranged so that the end of the vertical flange does not protrude from the end of the first vertical arm segment and the end of the second vertical arm segment.

[0043] The horizontal flanges of the adjacent two support arms are spliced and welded and fixed, and the vertical flanges of the adjacent two support arms are spliced and welded and fixed.

[0044] The top of the horizontal arm segment of the support arm away from the one end of the connecting sleeve is flush with the top of the vertical flange on both sides of the horizontal arm segment, and the open end of the mounting cavity of the connecting body is sleeved on the other end of the support arm to cover the horizontal flange, the vertical flange and the horizontal arm segment away from the one end of the connecting sleeve of the support arm.

[0045] As an optional embodiment of the present application, the connecting flange comprises two first connecting flanges, a second connecting flange and two third connecting flanges, the open end of the mounting cavity of the connecting body is sleeved on the other end of the support arm, the inner wall of the first connecting flange is welded and fixed to the top of the horizontal arm segment and the vertical flange on both sides of the horizontal arm segment away from the one end of the connecting sleeve of the support arm, the second connecting flange is welded and fixed to the bottom of the horizontal flange away from the one end of the connecting sleeve of the support arm, and the third connecting flange is welded and fixed to the outer wall of the vertical flange on both sides of the horizontal arm segment away from the one end of the connecting sleeve of the support arm.

[0046] As an optional embodiment of the present application, the horizontal arm segment away from the one end of the connecting sleeve of the support arm has a limiting step for limiting the open end of the mounting cavity of the connecting body to be sleeved on the other end of the support arm.

[0047] As an optional embodiment of the present application, the three-legged support of the inner drum of the drum washing machine comprises an inner drum connecting plate, one end of the support arm is welded and fixed to the connecting sleeve, and the other end of the support arm is welded and fixed to the inner drum connecting plate, and a connecting threaded hole is integrally formed on the inner drum connecting plate.

[0048] The present application also provides a tool clamp for processing and producing the three-legged support of the inner drum of the drum washing machine, which comprises:

[0049] A clamp bottom plate;

[0050] A sleeve positioning shaft is arranged at the center of the clamp bottom plate, and the connecting sleeve is sleeved on the sleeve positioning shaft;

[0051] At least three support arm clamping assemblies are arranged on the clamp bottom plate and distributed around the outer periphery of the sleeve positioning shaft, the support arm clamping assemblies correspond to the support arms one by one, and are used for clamping and positioning the support arms before welding connection with the connecting sleeve;

[0052] At least three support arm positioning assemblies are arranged on the clamp bottom plate, the support arm positioning assemblies correspond to the support arms one by one, the support arm positioning assemblies are located between the sleeve positioning shaft and the support arm clamping assemblies, and the support arm positioning assemblies are used for fixedly positioning the support arm clamping assemblies after the support arm clamping assemblies clamp and position the support arms and the connecting sleeve.

[0053] As an optional embodiment of the present application, the support arm clamping assembly comprises a fixed guide rail, a sliding positioning block and a locking piece, the sliding positioning block is slidably installed on the fixed guide rail, and the locking piece comprises a locking wheel and a locking top column, one end of the locking top column penetrates through the sliding positioning block to approach the fixed guide rail, and the other end is fixedly connected with the locking wheel located outside the sliding positioning block.

[0054] One end of the positioning hole of the support arm upper near inner cylinder connecting block has a positioning column, and one end of the positioning hole of the fixed guide rail upper near shaft sleeve positioning shaft has a positioning column.

[0055] The support arm is pre-positioned on the connecting shaft sleeve, the positioning hole of the support arm is positioned on the positioning column of the fixed guide rail by adjusting the fixed guide rail and at least two of the first mounting holes to be fixedly connected through the connecting piece, and the clamping positioning of the support arm is performed.

[0056] The inner cylinder connecting block is placed in the sliding positioning block, the sliding positioning block is slid along the fixed guide rail by sliding adjustment, the inner cylinder connecting block is spliced with the support arm by the sliding positioning block, and the clamping positioning of the inner cylinder connecting block is performed by operating the locking wheel to drive the locking top column to abut against the fixed guide rail.

[0057] Optionally, the clamp base plate has at least three groups of second mounting holes, each group of second mounting holes is located on one side of each group of first mounting holes, the arrangement direction of the second mounting holes is the same as that of the first mounting holes, the support arm positioning assembly is fixedly positioned by being pressed on the support arm through adjusting the support arm positioning assembly and at least two of the second mounting holes to be fixedly connected through the connecting piece.

[0058] The present application also provides a drum washing machine with the drum washing machine inner cylinder tripod of the present application, and the free end of the support arm of the drum washing machine inner cylinder tripod is fixedly connected with the inner cylinder bottom flange.

[0059] Compared with the prior art, the present application has the following beneficial effects:

[0060] The drum washing machine inner cylinder tripod of the present application, the connecting shaft sleeve and the at least three support arms can be separately processed and formed, and the at least three support arms are integrally formed with the connecting shaft sleeve after processing, and have the following technical effects:

[0061] Firstly, the connecting shaft sleeve and the support arm are separately processed, which has lower requirements for processing equipment and is simpler and more flexible in processing mode compared with the prior art of integrally pressure casting.

[0062] Second, the finished connecting shaft sleeve and support arm are fixedly connected as an integral structure by welding, which is simpler and more reliable than the prior integral die casting forming mode, and meets the overall rigidity requirement of the inner drum tripod of the drum washing machine.

[0063] Finally, the overall cost of the inner drum tripod of the drum washing machine in the embodiment is reduced through the above two modes, and in the long-term use process, even if corrosion and fracture occur and replacement is needed, the user's maintenance and replacement cost can be reduced. Moreover, if the connecting shaft sleeve or the support arm can be replaced separately, the user's maintenance and replacement cost can be further reduced.

[0064] In summary, the inner drum tripod of the drum washing machine reduces the production cost and can meet the rigidity requirement of the overall tripod, and has wide market value. BRIEF DESCRIPTION OF DRAWINGS

[0065] Fig. 1 is a perspective structural schematic view of the inner drum tripod of the drum washing machine in the first embodiment of the present application;

[0066] Fig. 2 is another perspective structural schematic view of the inner drum tripod of the drum washing machine in the first embodiment of the present application;

[0067] Fig. 3 is a side view of the inner drum tripod of the drum washing machine in the first embodiment of the present application;

[0068] Fig. 4 is an exploded view of the inner drum tripod of the drum washing machine in the first embodiment of the present application;

[0069] Fig. 5 is a perspective structural schematic view of the support arm of the inner drum tripod of the drum washing machine in the first embodiment of the present application;

[0070] Fig. 6 is a perspective structural schematic view of the inner drum connecting block of the inner drum tripod of the drum washing machine in the first embodiment of the present application;

[0071] Fig. 7 is a side view of the support arm of the inner drum tripod of the drum washing machine in the first embodiment of the present application;

[0072] Fig. 8 is a top view of the support arm of the inner drum tripod of the drum washing machine in the first embodiment of the present application;

[0073] Fig. 9 is a perspective structural schematic view of the inner drum tripod of the drum washing machine in the second embodiment of the present application;

[0074] Fig. 10 is an exploded view of the inner drum tripod of the drum washing machine in the second embodiment of the present application;

[0075] Fig. 11 is a perspective structural schematic view of the connecting shaft sleeve of the inner drum tripod of the drum washing machine in the second embodiment of the present application;

[0076] Figure 12 is a perspective view of the support arm of the inner drum tripod of the drum washing machine according to the second embodiment of the present application;

[0077] Figure 13 is a perspective view of the inner drum tripod of the drum washing machine according to the second embodiment of the present application;

[0078] Figure 14 is a sectional view of the inner drum tripod of the drum washing machine according to the second embodiment of the present application;

[0079] Figure 15 is an enlarged view of the part A in Figure 14 according to the second embodiment of the present application;

[0080] Figure 16 is a perspective view of the inner drum connecting block of the inner drum tripod of the drum washing machine according to the second embodiment of the present application;

[0081] Figure 17 is an exploded view of the inner drum connecting block of the inner drum tripod of the drum washing machine according to the second embodiment of the present application;

[0082] Figure 18 is a perspective view of the inner drum tripod of the drum washing machine according to the third embodiment of the present application;

[0083] Figure 19 is a perspective view of the inner drum tripod of the drum washing machine according to the third embodiment of the present application;

[0084] Figure 20 is an exploded view of the inner drum tripod of the drum washing machine according to the third embodiment of the present application;

[0085] Figure 21 is a perspective view of the connecting shaft sleeve and the sealing cover of the inner drum tripod of the drum washing machine according to the third embodiment of the present application;

[0086] Figure 22 is a perspective view of the support arm of the inner drum tripod of the drum washing machine according to the third embodiment of the present application;

[0087] Figure 23 is a perspective view of the inner drum connecting block of the inner drum tripod of the drum washing machine according to the third embodiment of the present application;

[0088] Figure 24 is an exploded view of the inner drum connecting block of the inner drum tripod of the drum washing machine according to the third embodiment of the present application;

[0089] Figure 25 is a perspective view of the inner drum connecting plate of the inner drum tripod of the drum washing machine according to the third embodiment of the present application;

[0090] Figure 26 is a perspective view of the working condition of the tool clamp according to the fourth embodiment of the present application;

[0091] Figure 27 is a front view of the working condition of the tool clamp according to the fourth embodiment of the present application. DETAILED DESCRIPTION

[0092] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application.

[0093] Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but merely represents some embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0094] It should be noted that the embodiments in the present application and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0095] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0096] In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, such terms are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0097] Embodiment one

[0098] Referring to FIGS. 1-4, a drum washing machine inner drum tripod of the present embodiment comprises:

[0099] A connecting shaft sleeve 400;

[0100] At least three support arms 200 are separately processed and formed;

[0101] Each of the support arms 200 is welded to the connecting shaft sleeve 400 to form an integral structure, and each of the support arms 200 is evenly distributed along the outer peripheral wall of the connecting shaft sleeve 400.

[0102] The drum washing machine inner drum tripod of the present embodiment, the connecting shaft sleeve 400 and the at least three support arms 200 can be separately processed and formed, and the at least three support arms 200 are welded to the connecting shaft sleeve 400 to form an integral structure, which has the following technical effects:

[0103] Firstly, the connecting shaft sleeve 400 and the support arm 200 are separately processed, and the requirement for processing equipment is lower, and the processing method is simpler and more flexible compared with the existing integral die casting method.

[0104] Secondly, the connecting shaft sleeve 400 and the support arm 200 are fixed and connected as an integral structure by welding, and the process is simple and reliable compared with the existing integral die casting method, and the overall rigidity requirement of the inner drum tripod of the drum washing machine is met.

[0105] Finally, the overall cost of the inner drum tripod of the drum washing machine of the embodiment is reduced by the above two methods, and the user's maintenance and replacement cost can be reduced even if corrosion and fracture occur and need to be replaced during long-term use in the future. Moreover, if the connecting shaft sleeve 400 or the support arm 200 can be replaced separately, the user's maintenance and replacement cost will be further reduced.

[0106] In summary, the inner drum tripod of the drum washing machine of the embodiment reduces the production and manufacturing cost, and can meet the rigidity requirement of the overall tripod, and has wide market value.

[0107] As an optional embodiment of the embodiment, the connecting shaft sleeve 400 has a first shaft section 401 and a second shaft section 403, the outer diameter of the first shaft section 401 is smaller than that of the second shaft section 403, and a mounting step 402 is formed at the intersection of the first shaft section 401 and the second shaft section 403; the support arm 200 has a horizontal arm section 202 and first and second vertical arm sections 203 and 204 connected to both ends of the horizontal arm section 202, respectively, one end of the horizontal arm section 202 is arranged on the mounting step 402 and is welded and fixed with the outer peripheral wall of the first shaft section 401, and one end of the first vertical arm section 203 and one end of the second vertical arm section 204 are welded and fixed with the outer peripheral wall of the second shaft section 403, respectively.

[0108] The inner drum tripod of the drum washing machine of the embodiment is constructed with the mounting step 402 on the connecting shaft sleeve 400, so that the horizontal arm section 202 of the support arm 200 is overlapped on the mounting step 402 to realize positioning when welding the support arm 200, which facilitates subsequent welding operation and ensures the reliability of welding.

[0109] In addition, the support arm 200 of the embodiment is welded and fixed with the outer peripheral wall of the first shaft section 401 through the horizontal arm section 202, and one end of the first vertical arm section 203 and one end of the second vertical arm section 204 are welded and fixed with the outer peripheral wall of the second shaft section 403, respectively, so as to increase the stability and reliability of the welding connection between the support arm 200 and the connecting shaft sleeve 400 as much as possible.

[0110] Further preferably, the end of the horizontal arm segment 202 which is welded and fixed to the outer peripheral wall of the first shaft segment 401 has a circular-arc-shaped notch 201. When the circular-arc-shaped notch 201 is tightly fitted to the outer peripheral wall of the first shaft segment 401 during the pre-positioning of the horizontal arm segment 202 of the support arm 200 on the mounting step 402, it indicates that the pre-positioning is in place, and the welding operation between the two can be performed at this time. Moreover, due to the tight fitting, the connection stability of the welding joint can be further increased.

[0111] Correspondingly, the end of the first vertical arm segment 203 and the end of the second vertical arm segment 204 of the embodiment are provided with an arc-shaped end surface matching the outer peripheral wall of the second shaft segment 403.

[0112] Further, the end of the first vertical arm segment 203 away from the horizontal arm segment 202 and the end of the second vertical arm segment 204 away from the horizontal arm segment 202 are both outwardly flanged to form a horizontal flange 205, the end of the horizontal flange 205 is upwardly flanged to form a vertical flange 206, and the end of one end of the horizontal flange 205 is obliquely arranged so that the end of the vertical flange 206 does not protrude from the end of the first vertical arm segment 203 and the second vertical arm segment 204; the horizontal flanges 205 of two adjacent support arms 200 are spliced and fixed by welding, and the vertical flanges 206 of two adjacent support arms 200 are spliced and fixed by welding. In this way, the support arm 200 of the embodiment is welded and fixed with the connecting shaft sleeve 400, and the support arm 200 is also welded and fixed with the support arm 200, so that the plurality of support arms 200 and the connecting shaft sleeve 400 together form an integral whole, ensuring the overall rigidity of the inner drum tripod of the drum washing machine.

[0113] In addition, the above structure of the support arm 200 of the embodiment can increase the structural rigidity of the support arm 200 itself and improve the torsional moment capacity.

[0114] Referring to FIGS. 1-4, the inner drum tripod of the drum washing machine of the embodiment includes an inner drum connecting block 300, one end of the support arm 200 is welded and fixed with the connecting shaft sleeve 400, and the other end of the support arm 200 is welded and fixed with the inner drum connecting block 300. The inner drum connecting block 300 of the embodiment is used to fix the motor with the inner drum of the drum washing machine. The inner drum connecting block 300 of the embodiment can also be separately manufactured and processed, and after processing is completed, it is welded as an integral structure with the support arm 200 by welding.

[0115] Referring to FIG. 4-6, the inner drum connecting block 300 of the embodiment includes a connecting sheet body and a threaded hole column 303, the connecting sheet body includes an integrally formed horizontal connecting sheet body 301 and a vertical connecting sheet body 302, and the threaded hole column 303 is formed by sheet metal stretching of a threaded flange hole column from the vertical connecting sheet body 302; the vertical flange 206 at the other end of the support arm 200 extends upward and protrudes from the horizontal arm section 202, the top of the vertical flange 206 on both sides of the horizontal arm section 202 is flush, the horizontal connecting sheet body 301 is welded and fixed with the top of the vertical flange 206, the vertical connecting sheet body 302 is welded and fixed with the end of the horizontal arm section 202, the first vertical arm section 203, the second vertical arm section 204, the horizontal flange 205, and the vertical flange 206, the threaded hole column 303 is arranged in the area enclosed by the first vertical arm section 203, the horizontal flange 205, and the vertical flange 206, and / or the area enclosed by the second vertical arm section 204, the horizontal flange 205, and the vertical flange 206.

[0116] The horizontal connecting sheet body 301 and the vertical connecting sheet body 302 of the inner drum connecting block 300 of the embodiment are respectively welded and fixed with the end of the support arm 200 in multiple positions, which ensures the integrated welding of the inner drum connecting block 300 and the support arm 200 and ensures the stability of the connection. The inner drum connecting block 300 of the embodiment is threadedly fixedly connected with the inner drum of the drum washing machine through the threaded hole column 303 and the connecting bolt.

[0117] Referring to FIG. 3-4, 7-8, the support arm 200 of the embodiment has an integrally formed first support part 200A, a second support part 200B, and a third support part 200C along its extension direction, the first support part 200A and the third support part 200C are horizontally arranged, and the second support part 200B is arranged obliquely, so that the first support part 200A and the third support part 200C have a height difference in the axial direction of the connecting shaft sleeve; the end of the first support part 200A is welded and fixed with the outer peripheral wall of the connecting shaft sleeve 400, and the end of the third support part 200C is welded and fixed with the inner drum connecting block 300. The entire structure of the support arm 200 of the embodiment is not in the same plane, which can increase the elastic buffering capacity of the support arm 200 in the radial and axial directions and better resist stress overload in the radial and axial directions.

[0118] Further, referring to FIG. 5 and FIG. 8, the horizontal arm segment 202, the first vertical arm segment 203, and the second vertical arm segment 204 jointly enclose the first groove 208, the first vertical arm segment 203, the horizontal flange 205, and the vertical flange 206 jointly enclose the second groove 209, and the second vertical arm segment 204, the horizontal flange 205, and the vertical flange 206 jointly enclose the third groove 210. The width of the first groove 208 of the first support part 200A, the second support part 200B, and the third support part 200C gradually decreases, the second groove 209 and the third groove 210 of the first support part 200A gradually decrease from the proximal end of the connecting shaft sleeve to the proximal end of the second support part, and the second groove 209 and the third groove 210 of the third support part 200C gradually increase from the proximal end of the second support part to the proximal end of the inner drum connecting block. The unique structural design of the support arm 200 of the present embodiment meets the overall rigidity requirement, the connection stability requirement between the support arm 200 and the connecting shaft sleeve 400, and the connection stability requirement between the support arm 200 and the inner drum connecting block 300. At the same time, the overall width change of the support arm 200 can reduce the use of alloy raw materials and reduce costs.

[0119] Referring to FIG. 4 and FIG. 5, the horizontal arm segment 202 of the inner drum tripod of the drum washing machine of the present embodiment is provided with a concave rib 207, which further improves the strength of the overall support arm 200.

[0120] Referring to FIG. 1-FIG. 4, the inner drum tripod of the drum washing machine of the present embodiment includes an inner drum shaft 100, the inner drum shaft 100 has a connecting shaft sleeve mounting part 101, the shaft sleeve mounting part 101 is mounted in the connecting shaft sleeve 400, the two are matched by interference pressure assembly, and the end a of the shaft sleeve mounting part 101 is fixed by welding with the connecting shaft sleeve 400. The inner drum shaft 100 and the connecting shaft sleeve 400 of the present embodiment are matched by interference pressure assembly, and are fixed by welding at the same time, which increases the connection strength of the two and ensures the stability of the integrated connection of the inner drum shaft 100 and the connecting shaft sleeve 400.

[0121] Further, the inner drum shaft 100 of the present embodiment has a first bearing mounting part 102, and the first bearing mounting part 102 and the connecting shaft sleeve mounting part 101 have a bearing stop protruding ring 104. The inner drum shaft 100 of the present embodiment also has a second bearing mounting part 103, and the second bearing mounting part 103 and the first bearing mounting part 102 have a bearing stop step.

[0122] Embodiment two

[0123] Referring to FIG. 9-FIG. 17, the inner drum tripod of the drum washing machine of the present embodiment includes:

[0124] a connecting shaft sleeve 400;

[0125] at least three support arms 200 are respectively formed separately;

[0126] The outer peripheral wall of the connecting sleeve 400 is provided with a positioning groove 404 extending in the radial direction, which is arranged correspondingly to the support arm 200. Each support arm 200 is integrally welded with the positioning groove 404 of the connecting sleeve 400 after pre-positioning cooperation, and each support arm 200 is uniformly distributed along the outer peripheral wall of the connecting sleeve 400.

[0127] The three-legged support of the inner drum of the drum washing machine in the embodiment can be separately formed by the connecting sleeve 400 and the at least three support arms 200. The at least three support arms 200 are integrally welded with the connecting sleeve 400 after processing, which has the following technical effects:

[0128] Firstly, the connecting sleeve 400 and the support arm 200 are separately processed, which has lower requirements for processing equipment and is more simple and flexible than the existing one-piece die-casting forming method.

[0129] Secondly, the connecting sleeve 400 is provided with a positioning groove 404 on the outer periphery, which cooperates with the support arm 200 to improve the positioning effect.

[0130] Thirdly, the connecting sleeve 400 and the support arm 200 are integrally connected by welding after processing, which is simpler and more reliable than the existing one-piece die-casting forming method and meets the overall rigidity requirements of the three-legged support of the inner drum of the drum washing machine.

[0131] Finally, the overall cost of the three-legged support of the inner drum of the drum washing machine in the embodiment is reduced by the above-mentioned method. In the long-term use process, even if corrosion and fracture occur and replacement is required, the user's maintenance and replacement cost can be reduced. Moreover, if the connecting sleeve 400 or the support arm 200 can be replaced separately, the user's maintenance and replacement cost can be further reduced.

[0132] In summary, the three-legged support of the inner drum of the drum washing machine in the embodiment reduces the production cost and meets the overall rigidity requirements of the three-legged support, which has broad market value.

[0133] As an optional embodiment of the embodiment, as shown in FIGS. 9-12, the support arm 200 has a horizontal arm segment 202, a first vertical arm segment 203 and a second vertical arm segment 204 connected to both ends of the horizontal arm segment 202, respectively. One end of the first vertical arm segment 203 and one end of the second vertical arm segment 204 are respectively integrally welded with the positioning groove 404 of the connecting sleeve 400 after pre-positioning cooperation.

[0134] The support arms 200 of the embodiment are respectively manufactured, and then the support arms 200 are respectively welded and fixed with the connecting shaft sleeves 400 into an integral structure. Before welding, the support arms 200 and the connecting shaft sleeves 400 are pre-positioned and matched through the positioning grooves 404, so as to facilitate the welding and fixing between the support arms 200 and the connecting shaft sleeves 400.

[0135] Referring to FIGS. 9, 13-15, the inner drum tripod of the drum washing machine of the embodiment includes an inner drum shaft 100, one end of the inner drum shaft 100 is inserted into the connecting shaft sleeve 400 and fixedly connected, a water seal 700 is sleeved on the inner drum shaft 100, a water seal sealing end cover 500 is fixedly installed on one side of the connecting shaft sleeve 400 close to the water seal 700, and an end surface of the water seal 700 abuts on an end surface of the water seal sealing end cover 500.

[0136] The sealing mode of the existing washing machine is that the sealing lip of the water seal 700 is sealed with the inner drum shaft 100, and water seepage will occur after long-term use, which will cause the bearing and the inner drum shaft 100 to rust and be stuck. The inner drum tripod of the drum washing machine of the embodiment adds a water seal sealing end cover 500, the end surface of the water seal 700 is sealed and contacted with the water seal sealing end cover 500, the sealing effect of the water seal is improved, the sealing performance is improved, and the service life is improved.

[0137] Further, a sealing shaft sleeve 600 is arranged between the inner drum shaft 100 and the water seal 700, the water seal 700 has a water seal inner lip 701 arranged on an inner circumferential wall and a water seal end surface lip 702 arranged on an end surface of the water seal, the water seal inner lip 701 is sealed by abutting on an outer circumferential wall of the sealing shaft sleeve 600, and the water seal end surface lip 702 is sealed by abutting on an end surface of the water seal sealing end cover 500.

[0138] Optionally, the end surface of the water seal sealing end cover 500 has an annular sealing groove, the water seal end surface lip 702 is sealed by abutting in the annular sealing groove of the water seal sealing end cover 500, so as to improve the end surface sealing effect between the two.

[0139] Referring to Figs. 9-15, the connecting sleeve 400 of the embodiment has a sleeve body 405, a first shaft section 401 at one end of the sleeve body 405, and a second shaft section 403 at the other end of the sleeve body 405. The outer diameter of the first shaft section 401 and the second shaft section 403 is smaller than that of the sleeve body 405. The intersection of the first shaft section 402 and the sleeve body 401 forms a first mounting step 402, and the intersection of the second shaft section 403 and the sleeve body 401 forms a second mounting step. One end of the horizontal arm section 202 of the support arm 200 is fixed to the first mounting step 402, and the water seal end cover 500 is limitedly mounted on the second mounting step. The embodiment realizes the pre-positioning of the installation of the water seal end cover 500 through the second mounting step.

[0140] The embodiment realizes the pre-positioning of the installation of the water seal end cover 500 through the second mounting step. The embodiment forms the first mounting step 404 on the connecting sleeve 400, so that when welding the support arm 200, the horizontal arm section 202 of the support arm 200 is overlapped on the first mounting step 402 to realize pre-positioning, which facilitates subsequent welding operation and ensures the reliability of welding.

[0141] In addition, the support arm 200 of the embodiment is welded and fixed to the outer peripheral wall of the first shaft section 401 through the horizontal arm section 202, which maximizes the stability and reliability of the welding connection between the support arm 200 and the connecting sleeve 400.

[0142] Further, the side end surface of the water seal end cover 500 near the support arm 200 is in contact with each support arm 200 and fixedly connected. The water seal end cover 500 and the support arm 200 of the embodiment can be fixed by welding.

[0143] Further preferably, the end of the horizontal arm section 202 welded and fixed to the outer peripheral wall of the first shaft section 403 has a circular-arc-shaped bayonet 201. When the circular-arc-shaped bayonet 201 is tightly fitted to the outer peripheral wall of the first shaft section 401 during the pre-positioning of the horizontal arm section 202 of the support arm 200 overlapped on the first mounting step 402, it indicates that the pre-positioning is in place, and welding operation between the two can be performed at this time. Moreover, since the two are tightly fitted, the connection stability of the welding joint can be further increased.

[0144] Further, the first vertical arm segment 203 and the second vertical arm segment 204 are both outwardly flanged at an end away from the horizontal arm segment 202 to form a horizontal flange 205, the end of the horizontal flange 205 is upwardly flanged to form a vertical flange 206, the end of the horizontal flange 205 is obliquely arranged so that the end of the vertical flange 206 does not protrude from the end of the first vertical arm segment 203 and the second vertical arm segment 204, the horizontal flange 205 of two adjacent support arms 200 is spliced and fixed by welding, and the vertical flange 206 of two adjacent support arms 200 is spliced and fixed by welding. In this way, the support arm 200 of the embodiment is welded and fixed with the connecting shaft sleeve 400, and the support arm 200 is also welded and fixed with the support arm 200, so that the plurality of support arms 200 and the connecting shaft sleeve 400 become an integral whole, ensuring the overall rigidity of the inner drum tripod of the drum washing machine.

[0145] In addition, the above structure of the support arm 200 of the embodiment can increase the structural rigidity of the support arm 200 itself and improve the torsional moment capacity.

[0146] Referring to FIGS. 9-10, 12, 16-17, the inner drum tripod of the drum washing machine of the embodiment includes an inner drum connecting block 300, one end of the support arm 200 is welded and fixed with the connecting shaft sleeve 400, and the other end of the support arm 200 is welded and fixed with the inner drum connecting block 300, the inner drum connecting block 300 includes a connecting sheet body and a welded nut 304, and the welded nut 304 is welded and fixed on the connecting sheet body. The original inner drum connecting block 300 is integrally formed with a flanged threaded hole, which is stretched to have a high flange height, is complex in process, is difficult to process, and has a small wall thickness at the threaded hole after stretching and forming, and poor reliability. The embodiment is changed to the welded nut 304 and the connecting sheet body, which are integrated by welding, are convenient to process, and have good reliability.

[0147] Further, the connecting sheet body includes an integrally formed horizontal connecting sheet body 301 and a vertical connecting sheet body 302, a through hole 305 is formed in the vertical connecting sheet body 302, and the welded nut 304 is welded and fixed on the vertical connecting sheet body 302 and opposite to the through hole 305.

[0148] Referring to FIG. 12, the vertical flange 206 of the other end of the support arm 200 extends upward and protrudes from the horizontal arm segment 202, the top of the vertical flange 206 on both sides of the horizontal arm segment 202 is flush, the horizontal connecting plate 301 is welded and fixed to the top of the vertical flange 206, the vertical connecting plate 302 is welded and fixed to the end of the horizontal arm segment 202, the first vertical arm segment 203, the second vertical arm segment 204, the horizontal flange 205, and the vertical flange 206, the threaded nut 304 is arranged in the area surrounded by the first vertical arm segment 203, the horizontal flange 205, and the vertical flange 206, and / or the area surrounded by the second vertical arm segment 204, the horizontal flange 205, and the vertical flange 206.

[0149] The horizontal connecting plate 301 and the vertical connecting plate 302 of the inner drum connecting block 300 are respectively welded and fixed to the end of the support arm 200 in multiple positions, ensuring the integrated welding of the inner drum connecting block 300 and the support arm 200 and ensuring the stability of the connection. The inner drum three-pronged stand of the drum washing machine of the embodiment is threadedly fixedly connected to the inner drum of the drum washing machine through the connecting bolt passing through the threaded nut 304.

[0150] Further, the horizontal arm segment 202, the first vertical arm segment 203, and the second vertical arm segment 204 of the embodiment jointly form a first recess 208, the first vertical arm segment 203, the horizontal flange 205, and the vertical flange 206 jointly form a second recess 209, and the second vertical arm segment 204, the horizontal flange 205, and the vertical flange 206 jointly form a third recess 210. The unique structural design of the support arm 200 meets the overall rigidity requirement, the connection stability requirement between the support arm 200 and the connecting shaft sleeve 400, and the connection stability requirement between the support arm 200 and the inner drum connecting block 300; at the same time, the overall width of the support arm 200 can be changed, which can reduce the use of alloy raw materials and reduce costs.

[0151] The inner drum three-pronged stand of the drum washing machine of the embodiment is provided with the concave rib 207 on the horizontal arm segment 202, further improving the strength of the overall support arm 200.

[0152] Embodiment three

[0153] Referring to FIGS. 18-25, the inner drum three-pronged stand of the drum washing machine of the embodiment comprises:

[0154] The connecting shaft sleeve 400 has a hollow channel inside, and has opposite first and second ends 406 and 407.

[0155] At least three support arms 200 are separately formed, each of the support arms 200 is welded to the outer wall of the connecting sleeve 400 after being pre-positioned, and each of the support arms 200 is uniformly distributed along the outer wall of the connecting sleeve 400;

[0156] The inner drum shaft 100 is inserted into and fixedly assembled at one end of the first end 406 of the connecting sleeve 400;

[0157] The sealing cover 800 covers the second end 407 of the connecting sleeve 400.

[0158] The three-legged support of the inner drum of the drum washing machine in the embodiment can separately form the connecting sleeve 400 and the at least three support arms 200, and the at least three support arms 200 are welded to the connecting sleeve 400 after being pre-positioned, thereby improving the positioning effect.

[0159] First, the connecting sleeve 400 and the support arm 200 are separately formed, which is lower in requirement for the processing equipment and simpler in processing mode than the existing one-piece die-casting mode.

[0160] Second, each of the support arms 200 is welded to the outer wall of the connecting sleeve 400 after being pre-positioned, thereby improving the positioning effect.

[0161] Third, the connecting sleeve 400 and the support arm 200 are fixedly connected to each other in an integrated structure by welding, which is simpler and more reliable than the existing one-piece die-casting mode and meets the overall rigidity requirement of the three-legged support of the inner drum of the drum washing machine.

[0162] Finally, the overall cost of the three-legged support of the inner drum of the drum washing machine in the embodiment is reduced by the above-mentioned mode, and the user's maintenance and replacement cost can be reduced even if corrosion and fracture occur and replacement is required during long-term use. Moreover, if the connecting sleeve 400 or the support arm 200 can be replaced separately, the user's maintenance and replacement cost can be further reduced.

[0163] In summary, the three-legged support of the inner drum of the drum washing machine in the embodiment reduces the production and manufacturing cost and meets the rigidity requirement of the three-legged support, thereby having a wide market value.

[0164] In addition, the three-legged support of the inner drum of the drum washing machine in the embodiment covers the second end 407 of the connecting sleeve 400 by the sealing cover 800, thereby sealing the hollow channel of the connecting sleeve 400 and preventing washing water from entering between the connecting sleeve 400 and the inner drum shaft 100 to cause rust and corrosion of the inner drum shaft 100.

[0165] In order to realize the sealing cover 800 sealing on the second end 407 of the connecting shaft sleeve 400, the embodiment adopts the following two implementation schemes:

[0166] Specifically, the second end 407 of the connecting shaft sleeve 400 has a limiting step on the inner wall, the sealing cover 800 is installed in the hollow channel of the second end 407 of the connecting shaft sleeve 400, and is limited and stopped by the limiting step.

[0167] The specific implementation scheme one realizes the sealing and limiting installation of the sealing cover 800 by setting the limiting step in the internal hollow channel of the second end 407 of the connecting shaft sleeve 400.

[0168] Specifically, the second end 407 of the connecting shaft sleeve 400 has a limiting step on the inner wall, the sealing cover 800 is installed in the hollow channel of the second end 407 of the connecting shaft sleeve 400, and is limited and stopped by the limiting step.

[0169] The specific implementation scheme two realizes the sealing connection by adopting the sealing cover 800 which can cooperate with the connecting shaft sleeve 400 without the need for structural design of the connecting shaft sleeve 400.

[0170] Further, the inner drum three-legged support of the embodiment includes an inner drum connecting block 300, one end of the support arm 200 is welded and fixed with the connecting shaft sleeve 400, the other end of the support arm 200 is welded and fixed with the inner drum connecting block 300, the inner drum connecting block 300 includes a connecting main body and a connecting nut 306, and the connecting nut 306 is welded in the connecting main body; the connecting main body has an installation cavity with one end open, the connecting nut 306 is welded on the bottom wall of the internal cavity of the connecting main body, and the installation cavity open end of the connecting main body is sleeved on the other end of the support arm 200 and is welded and fixed.

[0171] The inner drum connecting block 300 of the embodiment adopts the welding mode of the connecting main body and the connecting nut 306, which is convenient to process and has good reliability. Moreover, the connecting main body has an installation cavity with one end open, the installation cavity open end of the connecting main body is sleeved on the other end of the support arm 200 and is welded and fixed, so that the connecting main body can entirely cover the other end of the support arm 200, and the stability and reliability of the welding of the connecting main body and the other end of the support arm 200 are ensured.

[0172] Specifically, the connecting main body includes a main connecting sheet 307 and a connecting folded edge integrally arranged on the outer periphery of the main connecting sheet 307, and the connecting folded edge is bent towards one side of the main connecting sheet 307 to jointly form an open installation cavity.

[0173] The second end portion 407 of the connecting shaft sleeve has a mounting step 402; the support arm 200 has a horizontal arm segment 202 and a first vertical arm segment 203 and a second vertical arm segment 204 connected with two ends of the horizontal arm segment 202 respectively, one end of the horizontal arm segment 202 is arranged on the mounting step 402 and is welded and fixed with the outer peripheral wall of the second end portion 407, one end of the first vertical arm segment 203 and one end of the second vertical arm segment 204 are welded and fixed with the outer peripheral wall of the connecting shaft sleeve 400 respectively; the horizontal flange 205 is formed by outwardly flanging one end of the first vertical arm segment 203 away from the horizontal arm segment 202 and one end of the second vertical arm segment 204 away from the horizontal arm segment 202, the end of the horizontal flange 205 is upwardly flanged to form a vertical flange 206, the end of one end of the horizontal flange 205 is arranged in an inclined manner so that the end of the vertical flange 206 does not protrude from the end of the first vertical arm segment 203 and the second vertical arm segment 204; the horizontal flanges 205 of two adjacent support arms 200 are spliced and fixed by welding, the vertical flanges 206 of two adjacent support arms 200 are spliced and fixed by welding.

[0174] The horizontal arm segment 202, the first vertical arm segment 203 and the second vertical arm segment 204 jointly form a first recess 208, the first vertical arm segment 203, the horizontal flange 205 and the vertical flange 206 jointly form a second recess 209, and the second vertical arm segment 204, the horizontal flange 205 and the vertical flange 206 jointly form a third recess 210. The unique structure design of the support arm 200 meets the overall rigidity requirement, the connection stability requirement between the support arm 200 and the connecting shaft sleeve 400, and the connection stability requirement between the support arm 200 and the inner cylinder connecting block 300; at the same time, the overall width of the support arm 200 can be changed, which can reduce the use of alloy raw materials and reduce the cost.

[0175] Correspondingly, the horizontal arm segment 202 of the support arm 200 away from one end of the connecting shaft sleeve 400 is flush with the top of the vertical flange 206 on both sides, the mounting cavity of the connecting main body is sleeved on the other end of the support arm 200, and covers the horizontal flange 205, the vertical flange 206 and the horizontal arm segment 202 of the support arm 200 away from the connecting shaft sleeve 400.

[0176] As a specific embodiment of the present embodiment, referring to FIG. 23 and FIG. 24, the connecting flange of the present embodiment includes two oppositely arranged first connecting flanges 308, a second connecting flange 309, and two oppositely arranged third connecting flanges 310. The open end of the mounting cavity of the connecting body is sleeved on the other end of the support arm 200. The inner wall of the first connecting flange 308 is welded and fixed to the top of the vertical flange 206 on the horizontal arm segment 202 of the support arm 200 away from the connecting shaft sleeve 400 and the horizontal flange 205 of the support arm 200 away from the connecting shaft sleeve 400. The second connecting flange 304 is welded and fixed to the bottom of the vertical flange 206 on the horizontal arm segment 202 of the support arm 200 away from the connecting shaft sleeve 400. The third connecting flange 310 is welded and fixed to the outer wall of the vertical flange 206 on the horizontal arm segment 202 of the support arm 200 away from the connecting shaft sleeve 400.

[0177] Further, the horizontal arm segment 202 of the support arm 200 away from the connecting shaft sleeve 400 has a limiting step 211 for limiting the open end of the mounting cavity of the connecting body sleeved on the other end of the support arm 200.

[0178] As a specific embodiment of the present embodiment, referring to FIG. 25, the inner tube tripod of the drum washing machine of the present embodiment includes an inner tube connecting plate 300', one end of the support arm 200 is welded and fixed to the connecting shaft sleeve 400, the other end of the support arm 200 is welded and fixed to the inner tube connecting plate 300', and the inner tube connecting plate 300' is integrally formed with a connecting threaded hole 311. The inner tube connecting plate 300' of the present embodiment is integrally formed and simultaneously processed with the connecting threaded hole 311, has better precision, and has better product consistency.

[0179] In order to ensure the strength of the inner tube connecting plate 300', the inner tube connecting plate 300' of the present embodiment has a certain thickness and is integrally formed by metal block extrusion.

[0180] Embodiment Four

[0181] The inner tube tripod of the drum washing machine of the present embodiment, the connecting shaft sleeve 400 and the at least three support arms 200 can be separately processed, and the at least three support arms 200 are welded and fixed to the connecting shaft sleeve 400 to form an integrated structure. Therefore, in order to ensure the accurate welding position between the support arms 200 and the connecting shaft sleeve 400, referring to FIG. 26 and FIG. 27, the present embodiment simultaneously provides a tool clamp for processing and producing the inner tube tripod of the drum washing machine, which includes:

[0182] a clamp bottom plate 901;

[0183] A shaft sleeve positioning shaft 904 is arranged at the center of the clamp base plate 901, and the connecting shaft sleeve 400 is sleeved on the shaft sleeve positioning shaft 904;

[0184] At least three support arm clamping assemblies 902 are arranged on the clamp base plate 901 and distributed around the outer periphery of the shaft sleeve positioning shaft 904, and the support arm clamping assemblies 902 correspond to the support arms 200 one by one, and are used for clamping and positioning the support arms 200 before the support arms 200 are welded to the connecting shaft sleeve 400;

[0185] At least three support arm positioning assemblies 903 are arranged on the clamp base plate 901, and the support arm positioning assemblies 903 correspond to the support arms 200 one by one, and are located between the shaft sleeve positioning shaft 904 and the support arm clamping assemblies 902, and are used for fixing and positioning the support arms 200 after the support arm clamping assemblies 902 clamp and position the support arms 200 and the connecting shaft sleeve 400.

[0186] For the welding method of the inner drum tripod of the drum washing machine, the embodiment creatively proposes a uniquely designed tool clamp. The clamp base plate 901 is fixedly connected with a support plane to provide an operation platform. The shaft sleeve positioning shaft 904 is used for sleeving the connecting shaft sleeve 400 to achieve fixed positioning. The shaft sleeve positioning shaft 904 has an expandable and contractible expansion and contraction member. When the expansion and contraction member is in a contracted state, the connecting shaft sleeve 400 is sleeved on the shaft sleeve positioning shaft 904. When the expansion and contraction member is expanded, the connecting shaft sleeve 400 is no longer rotated relative to the shaft sleeve positioning shaft 904. The support arm clamping assembly 902 is used for clamping and positioning each support arm and the connecting shaft sleeve 400. After clamping and positioning by the support arm clamping assembly 902, the support arm positioning assembly 903 is used for fixed positioning, so that the relative position between the support arm 200 and the connecting shaft sleeve 400 is kept in a fixed state. Therefore, by using the tool clamp, the assembly and positioning before welding of the inner drum tripod of the drum washing machine are realized, the connection position between the support arm 200 and the connecting shaft sleeve 400 is ensured to meet the requirements, and then the welding process is performed.

[0187] As an optional embodiment of the present application, as shown in FIG. 26 and FIG. 5, the support arm clamping assembly 902 includes a fixed guide rail 902A, a sliding positioning block 902B and a locking member 902C. The sliding positioning block 902B is slidably installed on the fixed guide rail 902A. The locking member 902C includes a locking wheel and a locking top column. One end of the locking top column penetrates through the sliding positioning block 902B to approach the fixed guide rail 902A, and the other end is fixedly connected with the locking wheel located outside the sliding positioning block 902B.

[0188] The support arm 200 has a positioning hole 211 at one end of the inner drum connecting block 300, the fixed guide rail 902A has a positioning column 902E at one end of the shaft sleeve positioning shaft 904, and the clamp bottom plate 901 has at least three groups of first mounting holes 902D extending from the far end to the near end of the shaft sleeve positioning shaft 904.

[0189] The support arm 200 is pre-positioned on the connecting shaft sleeve 400, the positioning hole 211 of the support arm 200 is positioned on the positioning column 902E of the fixed guide rail 902A by adjusting the fixed guide rail 902A and at least two of a group of first mounting holes 902D to be fixedly connected through a connecting piece, and the clamping positioning of the support arm 200 is performed.

[0190] The inner drum connecting block 300 is placed on the sliding positioning block 902B, the sliding positioning block 902B is adjusted to slide along the fixed guide rail 902A, the inner drum connecting block 300 is spliced with the support arm 200 by the sliding positioning block 902B, and the clamping positioning of the inner drum connecting block 300 is performed by operating the locking wheel to drive the locking top column to abut against the fixed guide rail 902A.

[0191] As an optional embodiment of the present application, referring to FIG. 26, the clamp bottom plate 901 has at least three groups of second mounting holes 903A, each group of second mounting holes 903A is located on one side of each group of first mounting holes 902D, the arrangement direction of the second mounting holes 903A is the same as that of the first mounting holes 902D, the support arm positioning assembly 903 is fixedly positioned by adjusting the support arm positioning assembly 903 and at least two of a group of second mounting holes 903A to be fixedly connected through a connecting piece.

[0192] Specifically, the support arm positioning assembly 903 of the embodiment includes a fixed base 903B and a clamping arm 903, the fixed base 903B is fixedly connected with the second mounting hole 903A, and the clamping arm 903 is installed on the fixed base 903B in an openable and closable manner, the fixed positioning of the support arm 200 is released by pressing and opening the clamping arm 903, the clamping arm 903 is placed on the upper part of the support arm 200, and the support arm 200 is clamped and fixed by the clamping arm 903.

[0193] Embodiment five

[0194] The embodiment provides a drum washing machine with the inner drum tripod of the drum washing machine in embodiments one, two and three, and the free end of the support arm of the inner drum tripod is fixedly connected with the bottom flange of the inner drum.

[0195] The drum washing machine of the embodiment adopts the tripod of the inner drum of the drum washing machine, meets the transmission rigidity requirement of the connection of the driving motor and the inner drum, and can reduce the overall cost and the later use and maintenance cost.

[0196] The above embodiments are only used to illustrate the present application and not to limit the technical solutions described in the present application. Although the present application has been described in detail with reference to the above embodiments, the present application is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement of the present application; and all technical solutions and improvements without departing from the spirit and scope of the application are all included in the scope of the claims of the present application.

Claims

1. A drum washing machine inner tub tripod characterized by, The utility model relates to a kind of support arm, including: Connecting sleeve; At least three support arms are respectively individually processed into shape; Each of the support arms is respectively welded into an integral structure with the connecting sleeve, and each of the support arms is evenly distributed along the outer peripheral wall of the connecting sleeve.

2. A drum washing machine inner drum tripod according to claim 1, characterized in that, The connecting sleeve has a first shaft section and a second shaft section, the outer diameter of the first shaft section is smaller than that of the second shaft section, and a mounting step is formed at the intersection of the first shaft section and the second shaft section. The support arm has a horizontal arm section and a first vertical arm section and a second vertical arm section connected to the two ends of the horizontal arm section respectively, one end of the horizontal arm section is arranged on the mounting step and welded to the outer peripheral wall of the first shaft section, and one end of the first vertical arm section and one end of the second vertical arm section are welded to the outer peripheral wall of the second shaft section respectively. Optionally, the end of the horizontal arm section welded to the outer peripheral wall of the first shaft section has a circular-arc-shaped socket, and the socket is in close contact with the outer peripheral wall of the first shaft section. Optionally, a concave rib is arranged on the horizontal arm section.

3. A drum washing machine inner drum tripod according to claim 2, characterized in that, The end of the first vertical arm section away from the horizontal arm section and the end of the second vertical arm section away from the horizontal arm section are both outwardly flanged to form horizontal flanges, the end of the horizontal flange is upwardly flanged to form a vertical flange, and the end of the horizontal flange is obliquely arranged so that the end of the vertical flange does not protrude from the ends of the first vertical arm section and the second vertical arm section. The horizontal flanges of two adjacent support arms are spliced and fixed by welding, and the vertical flanges of two adjacent support arms are spliced and fixed by welding.

4. A drum washing machine inner drum tripod according to claim 3, characterized in that, One end of the support arm is welded to the connecting sleeve, and the other end of the support arm is welded to the inner cylinder connecting block. Optionally, the inner cylinder connecting block includes a connecting sheet body and a threaded hole column, the connecting sheet body includes an integrally-formed horizontal connecting sheet body and a vertical connecting sheet body, and the threaded hole column is formed by stretching a threaded flange hole column from the vertical connecting sheet body; the vertical flange of the other end of the support arm extends upwardly beyond the horizontal arm section, the top of the vertical flanges on both sides of the horizontal arm section is level, the horizontal connecting sheet body is welded to the top of the vertical flange, the vertical connecting sheet body is welded to the end of the horizontal arm section, the first vertical arm section, the second vertical arm section, the horizontal flange, and the vertical flange, the threaded hole column is arranged in the region enclosed by the first vertical arm section, the horizontal flange, and the vertical flange, and / or the region enclosed by the second vertical arm section, the horizontal flange, and the vertical flange.

5. A drum washing machine inner drum tripod according to claim 4, characterized in that, The support arm has a first support part, a second support part, and a third support part integrally formed along its extension direction, the first support part and the third support part are horizontally arranged, and the second support part is obliquely arranged so that the first support part and the third support part have a height difference in the axial direction of the connecting sleeve; the end of the first support part is welded to the outer peripheral wall of the connecting sleeve, and the end of the third support part is welded to the inner cylinder connecting block. Optionally, the horizontal arm section, the first vertical arm section and the second vertical arm section jointly enclose a first groove, the first vertical arm section, the horizontal flange and the vertical flange jointly enclose a second groove, and the second vertical arm section, the horizontal flange and the vertical flange jointly enclose a third groove, the width of the first groove of the first support part, the second support part and the third support part gradually decreases, the second groove and the third groove of the first support part gradually decrease from the end of the proximal connecting sleeve to the end of the proximal second support part, and the second groove and the third groove of the third support part gradually increase from the end of the proximal second support part to the end of the proximal inner cylinder connecting block.

6. The tri-pod of the inner tub of a drum-type washing machine according to claim 1, wherein The inner cylinder shaft has a shaft sleeve mounting part which is mounted in the connecting sleeve and is fixed by interference fit, and the end of the shaft sleeve mounting part is fixed to the connecting sleeve by welding.

7. The tri-pod of the inner tub of a drum-type washing machine according to claim 1, wherein The outer peripheral wall of the connecting sleeve is provided with a positioning groove extending in the radial direction, the positioning groove is arranged in correspondence with the support arm, each support arm is integrally welded with the connecting sleeve after being pre-positioned with the positioning groove of the connecting sleeve, and each support arm is uniformly distributed along the outer peripheral wall of the connecting sleeve. Optionally, the support arm has a horizontal arm section and a first vertical arm section and a second vertical arm section connected to both ends of the horizontal arm section, and the end of the first vertical arm section and the end of the second vertical arm section are pre-positioned with the positioning groove of the connecting sleeve and are integrally welded.

8. A drum washing machine inner drum tripod according to claim 7, characterized in that, The inner cylinder shaft is inserted into the connecting sleeve and fixedly connected, a water seal is sleeved on the inner cylinder shaft, a water seal sealing end cover is fixedly mounted on the connecting sleeve near the water seal, and the end surface of the water seal abuts on the end surface of the water seal sealing end cover. Optionally, a sealing sleeve is arranged between the inner cylinder shaft and the water seal, the water seal has a water seal inner lip arranged on the inner peripheral wall and a water seal end surface lip arranged on the end surface of the water seal, the water seal inner lip abuts on the outer peripheral wall of the sealing sleeve for sealing, and the water seal end surface lip abuts on the end surface of the water seal sealing end cover for sealing. Optionally, the end surface of the water seal sealing end cover has an annular sealing groove, and the water seal end surface lip abuts in the annular sealing groove of the water seal sealing end cover for sealing.

9. A drum washing machine inner drum tripod according to claim 8, characterized in that, The connecting sleeve has an integrally formed sleeve body, a first shaft section at one end of the sleeve body and a second shaft section at the other end of the sleeve body, the outer diameters of the first shaft section and the second shaft section are smaller than the outer diameter of the sleeve body, the intersection of the first shaft section and the sleeve body forms a first mounting step, and the intersection of the second shaft section and the sleeve body forms a second mounting step. One end of the horizontal arm section of the support arm is fixed to the first mounting step, and the water seal sealing end cover is limitedly mounted on the second mounting step. Optionally, the side end surface of the water seal sealing end cover near the support arm is in contact with each support arm and is fixedly connected.

10. The tri-pod of the inner tub of a drum-type washing machine according to claim 7, wherein The support arm is integrally welded with the connecting sleeve at one end, and is integrally welded with the inner cylinder connecting block at the other end, the inner cylinder connecting block includes a connecting sheet body and a welded nut, and the welded nut is welded to the connecting sheet body. Optionally, the connecting piece body comprises an integrally formed horizontal connecting piece body and a vertical connecting piece body, a through hole is formed in the vertical connecting piece body, and the welding nut is welded and fixed on the vertical connecting piece body and opposite to the through hole.

11. The tri-pod of the inner tub of a drum-type washing machine according to claim 1, wherein The connecting shaft sleeve has a hollow channel inside, and has opposite first and second end portions; one end of the inner cylinder shaft is inserted into and fixedly assembled with the first end portion of the connecting shaft sleeve; and the sealing cover covers the second end portion of the connecting shaft sleeve. Optionally, the second end inner wall of the connecting shaft sleeve has a limiting step, and the sealing cover is installed in the hollow channel of the second end of the connecting shaft sleeve and is limited and stopped by the limiting step. Optionally, the sealing cover comprises an integrally formed sealing cover body and a sealing plug body, a limiting boss is formed between the sealing cover body and the sealing plug body, and the sealing plug body is installed in the hollow channel of the second end of the connecting shaft sleeve and is limited and stopped by the limiting boss.

12. A drum washing machine inner drum tripod according to claim 11, characterized in that, The support arm has a horizontal arm segment and first and second vertical arm segments connected to two ends of the horizontal arm segment, respectively; one end of the horizontal arm segment is arranged on the mounting step and is welded and fixed with the outer peripheral wall of the second end portion; and one end of the first vertical arm segment and one end of the second vertical arm segment are welded and fixed with the outer peripheral wall of the connecting shaft sleeve, respectively. The first vertical arm segment and the second vertical arm segment are welded and fixed with each other through the horizontal flanges and the vertical flanges. The horizontal flange of the support arm far away from the connecting shaft sleeve is arranged on the same horizontal plane as the top of the vertical flanges on the two sides of the horizontal flange. The mounting cavity of the connecting main body is sleeved on the other end of the support arm and covers the horizontal flange, the vertical flange and the horizontal arm segment of the support arm far away from the connecting shaft sleeve. ​ ​ ​ ​ Further optionally, the connecting flange comprises two first connecting flanges arranged oppositely, a second connecting flange, and two third connecting flanges arranged oppositely, the open end of the mounting cavity of the connecting body is sleeved on the other end of the support arm, the inner wall of the first connecting flange is fitted and welded with the top of the vertical flange on the side of the horizontal arm segment of the support arm away from the one end of the connecting shaft sleeve, the second connecting flange is fitted and welded with the bottom of the horizontal flange on the support arm away from the one end of the connecting shaft sleeve, and the third connecting flange is fitted and welded with the outer wall of the vertical flange on the side of the horizontal arm segment of the support arm away from the one end of the connecting shaft sleeve. Further optionally, the horizontal arm segment of the support arm away from the one end of the connecting shaft sleeve has a limiting step for limiting the open end of the mounting cavity of the connecting body from being sleeved on the other end of the support arm.

13. The drum laundry machine inner drum tripod according to claim 11, characterized in that, The support arm is welded with the connecting shaft sleeve at one end, and the other end is welded with the inner cylinder connecting piece, and the inner cylinder connecting piece is integrally formed with a connecting threaded hole.

14. A tooling fixture for machining the tripod of the inner drum of a drum washing machine according to any one of claims 1 to 13, characterized in that, It comprises: a clamp base plate; a shaft sleeve positioning shaft arranged at the center of the clamp base plate, and the connecting shaft sleeve is sleeved on the shaft sleeve positioning shaft; at least three support arm clamping assemblies arranged on the clamp base plate and distributed on the outer periphery of the shaft sleeve positioning shaft, the support arm clamping assemblies correspond to the support arms one by one, and are used for clamping and positioning the support arms before welding connection with the connecting shaft sleeve; at least three support arm positioning assemblies arranged on the clamp base plate, the support arm positioning assemblies correspond to the support arms one by one, the support arm positioning assemblies are located between the shaft sleeve positioning shaft and the support arm clamping assemblies, and the support arm positioning assemblies are used for fixing and positioning the support arm clamping assemblies after the support arm clamping assemblies clamp and position the support arms and the connecting shaft sleeve; Optionally, the support arm clamping assembly comprises a fixed guide rail, a sliding positioning block and a locking piece, the sliding positioning block is slidably installed on the fixed guide rail, and the locking piece comprises a locking wheel and a locking top column, one end of the locking top column penetrates through the sliding positioning block to approach the fixed guide rail, and the other end is fixedly connected with the locking wheel located outside the sliding positioning block; one end of the support arm near the inner cylinder connecting block has a positioning hole, one end of the fixed guide rail near the shaft sleeve positioning shaft has a positioning column, and the clamp base plate has at least three groups of first mounting holes extending from far to near the shaft sleeve positioning shaft; the support arm is pre-positioned on the connecting shaft sleeve, the positioning hole of the support arm is positioned on the positioning column of the fixed guide rail by adjusting at least two of a group of first mounting holes to be fixedly connected with the connecting piece, and the clamping and positioning of the support arm is performed; the inner cylinder connecting block is placed in the sliding positioning block, the inner cylinder connecting block and the support arm are spliced by sliding the sliding positioning block along the fixed guide rail, and the clamping and positioning of the inner cylinder connecting block is performed by operating the locking wheel to drive the locking top column to abut against the fixed guide rail. Further optionally, the clamp base plate has at least three groups of second mounting holes, each group of second mounting holes is located on one side of each group of first mounting holes, the arrangement direction of the second mounting holes is the same as the arrangement direction of the first mounting holes, the support arm positioning assembly is fixedly connected with at least two of a group of second mounting holes through a connecting piece, and the support arm positioning assembly is pressed on the support arm to be fixed and positioned.

15. A drum washing machine having the inner drum tripod of any one of claims 1 to 13, characterized in that, The drum washing machine inner cylinder tripod support arm free end and inner cylinder bottom turnup fixed connection.

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