Inner barrel tripod of roller washing machine, tool clamp and roller washing machine

Abstract

The utility model discloses a roller washing machine inner barrel tripod and a roller washing machine, and the roller washing machine inner barrel tripod comprises a connecting shaft sleeve; the at least three supporting arms are respectively and independently processed and formed; the supporting arms and the connecting shaft sleeve are welded into an integrated structure, and the supporting arms are evenly distributed along the peripheral wall of the connecting shaft sleeve. The tripod, the connecting shaft sleeve and the supporting arm of the inner barrel of the roller washing machine are respectively and independently machined, and compared with an existing integrated die-casting forming mode, the requirement for machining equipment is lower, and the machining mode is simpler and more flexible; the machined connecting shaft sleeve and the supporting arm are fixedly connected into an integrated structure in a welding mode, compared with an existing integrated die-casting forming mode, the process mode is simple and reliable, and the overall rigidity requirement of the inner barrel tripod of the roller washing machine is met; therefore, the production and manufacturing cost is reduced, the overall rigidity requirement of the tripod can be met at the same time, and the wide market value is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of laundry equipment, and in particular to an inner drum tripod of a drum washing machine, a tooling fixture and a drum washing machine. Background Art

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

[0003] It can be seen that the tripod, as the main power-bearing component, 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 a simple three support arms, and a reinforced structural design is required on the support arms. However, the existing tripod is formed by one-piece die-casting of aluminum alloy, which puts forward higher requirements on the die-casting equipment and process, and increases the production and manufacturing cost of the tripod. Moreover, with the long-term use of the washing machine, the working environment of the tripod makes it prone to corrosion and fatigue fracture, which leads to an increase in the later replacement cost of the tripod.

[0004] In view of this, this utility model patent is proposed. Utility Model Content

[0005] In order to solve the above problems, the utility model aims to provide a drum washing machine inner drum tripod and a drum washing machine, which, on the basis of meeting the rigidity requirements of the tripod, changes the production process of the tripod and reduces the cost of the tripod. Specifically, the following technical solutions are adopted:

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

[0007] Connecting sleeve;

[0008] At least three support arms, each of which is individually machined and formed;

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

[0010] As an optional embodiment of the utility model, the connecting sleeve has a first shaft section and a second shaft section, the outer diameter of the first shaft section is smaller than the outer diameter of the second shaft section, and a mounting step is formed at the intersection of the first shaft section and the second shaft section;

[0011] The support arm comprises a horizontal arm section and a first vertical arm section and a second vertical arm section respectively connected to two ends of the horizontal arm section, one end of the horizontal arm section is arranged on the mounting step and is welded and fixed 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 respectively welded and fixed to the outer peripheral wall of the second shaft section.

[0012] As an optional embodiment of the present invention, one end of the first vertical arm segment away from the horizontal arm segment and one end of the second vertical arm segment away from the horizontal arm segment are both turned outward to form a horizontal turn, and the end of the horizontal turn is turned upward to form a vertical turn, and the end of one end of the horizontal turn is inclined so that the end of the vertical turn does not protrude from the ends of the first vertical arm segment and the second vertical arm segment;

[0013] 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.

[0014] As an optional embodiment of the present invention, a drum washing machine inner drum tripod of the present invention comprises an inner drum connecting block, 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 block.

[0015] As an optional embodiment of the present utility model, the inner cylinder connecting block includes a connecting plate body and a threaded hole column, the connecting plate body includes an integrally formed horizontal connecting plate body and a vertical connecting plate body, and the threaded hole column is formed by stretching a threaded flange hole column from the vertical connecting plate body sheet metal; the vertical flange at the other end of the support arm extends upward and protrudes from the horizontal arm section, and the tops of the vertical flanges on both sides of the horizontal arm section are flush with each other, the horizontal connecting plate body is welded and fixed to the top of the vertical flange, and the vertical connecting plate body is welded and fixed to the end portions of the horizontal arm section, the first vertical arm section, the second vertical arm section, the horizontal flange, and the vertical flange, and the threaded hole column is arranged in the area enclosed by the first vertical arm section, the horizontal flange, and the vertical flange, and / or the area enclosed by the second vertical arm section, the horizontal flange, and the vertical flange.

[0016] As an optional embodiment of the utility model, the support arm has an integrally formed first support portion, a second support portion and a third support portion along its extension direction, the first support portion and the third support portion are horizontally arranged, and the second support portion is inclined, so that the first support portion and the third support portion have a height difference in the axial direction of the connecting sleeve; the end portion of the first support portion is welded and fixed to the outer peripheral wall of the connecting sleeve, and the end portion of the third support portion is welded and fixed to the inner cylinder connecting block.

[0017] As an optional embodiment of the present utility model, the horizontal arm section, the first vertical arm section, and the second vertical arm section together form a first groove, the first vertical arm section, the horizontal flange, and the vertical flange together form a second groove, the second vertical arm section, the horizontal flange, and the vertical flange together form 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 near the connecting sleeve to the end near the second support part, and the second groove and the third groove of the third support part gradually increase from the end near the second support part to the end near the inner tube connecting block.

[0018] As an optional embodiment of the present invention, a drum washing machine inner drum tripod of the present invention includes an inner drum shaft, the inner drum shaft has a connecting sleeve mounting portion, the sleeve mounting portion is installed in the connecting sleeve, the two are fitted by interference fit, and the end of the sleeve mounting portion is fixed to the connecting sleeve by welding.

[0019] The utility model also provides a fixture for processing and producing the inner drum tripod of the drum washing machine, comprising:

[0020] Fixture base plate;

[0021] A sleeve positioning shaft is arranged at the center of the fixture bottom plate, and the connecting sleeve is sleeved on the sleeve positioning shaft;

[0022] At least three support arm clamping assemblies are arranged on the fixture bottom plate and distributed on the periphery of the sleeve positioning shaft, the support arm clamping assemblies correspond to the support arms one by one, and are used to achieve clamping and positioning of the support arms before welding the connecting sleeves;

[0023] At least three support arm positioning assemblies are arranged on the fixture base 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 assembly, and the support arm positioning assemblies are used for fixing the support arm and the connecting sleeve after the support arm clamping assembly welds and clamps the support arm.

[0024] As an optional embodiment of the utility model, the support arm clamping assembly includes a fixed guide rail, a sliding positioning block and a locking piece, the sliding positioning block is slidably mounted on the fixed guide rail, the locking piece includes a locking wheel and a locking top column, one end of the locking top column passes through the sliding positioning block to approach the fixed guide rail, and the other end is fixedly connected to the locking wheel located outside the sliding positioning block;

[0025] The support arm has a positioning hole at one end near the inner cylinder connection block, the fixed guide rail has a positioning column at one end near the sleeve positioning shaft, and the fixture bottom plate has at least three groups of first mounting holes, and the first mounting holes extend from far to near to the sleeve positioning shaft;

[0026] Pre-position the support arm on the connecting sleeve, adjust the fixed guide rail and at least two of the first mounting holes to be fixedly connected through a connecting piece, position the positioning hole of the support arm on the positioning column of the fixed guide rail, and clamp and position the support arm;

[0027] The inner cylinder connection block is placed on the sliding positioning block, and the sliding positioning block is adjusted to slide along the fixed guide rail, and the sliding positioning block pushes the inner cylinder connection block to be spliced ​​with the support arm, and the locking top column is driven to press against the fixed guide rail by operating the locking wheel to clamp and position the inner cylinder connection block;

[0028] 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, and the support arm positioning assembly is adjusted to be fixedly connected to 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 for fixed positioning.

[0029] The utility model also provides a drum washing machine with the drum washing machine inner drum tripod, comprising an inner drum, wherein the free end of the support arm of the drum washing machine inner drum tripod is fixedly connected to the bottom flange of the inner drum.

[0030] Compared with the prior art, the utility model has the following beneficial effects:

[0031] The utility model provides a drum washing machine inner drum tripod, wherein the connecting sleeve and at least three supporting arms can be processed and formed separately, and the at least three supporting arms after processing are welded and fixed to the connecting sleeve to form an integrated structure, which has the following technical effects:

[0032] Firstly, the connecting sleeve and the supporting arm are processed separately, which has lower requirements on processing equipment and is simpler and more flexible than the existing one-piece die-casting method.

[0033] Secondly, the processed connecting sleeve and the supporting arm are fixedly connected into an integrated structure by welding. Compared with the existing integrated die-casting method, the process is simple and reliable, and meets the overall rigidity requirements of the inner drum tripod of the drum washing machine.

[0034] Finally, the above two methods can reduce the overall cost of the inner drum tripod of the drum washing machine of this embodiment, and in the long-term use process, even if it needs to be replaced due to corrosion or fracture, the user's maintenance and replacement costs can be reduced. Moreover, if the connecting sleeve or the support arm can be replaced separately, the user's maintenance and replacement costs will be further reduced.

[0035] In summary, the inner drum tripod of a drum washing machine of the utility model reduces the production cost and can simultaneously meet the rigidity requirements of the entire tripod, thus having broad market value. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the three-dimensional structure of a tripod frame of a drum washing machine according to an embodiment of the utility model Figure 1 ;

[0037] Figure 2 A schematic diagram of the three-dimensional structure of a tripod frame of a drum washing machine according to an embodiment of the utility model Figure 2 ;

[0038] Figure 3 A side view of a tripod of an inner drum of a drum washing machine according to an embodiment of the utility model;

[0039] Figure 4 An exploded view of a tripod frame of an inner drum of a drum washing machine according to an embodiment of the utility model;

[0040] Figure 5 A schematic diagram of the three-dimensional structure of a support arm of a tripod of an inner drum of a drum washing machine according to an embodiment of the utility model;

[0041] Figure 6 A schematic diagram of the three-dimensional structure of an inner drum connecting block of an inner drum tripod of a drum washing machine according to an embodiment of the utility model;

[0042] Figure 7 A side view of a support arm of a tripod of an inner drum of a drum washing machine according to an embodiment of the utility model;

[0043] Figure 8 A top view of a support arm of a tripod of an inner drum of a drum washing machine according to an embodiment of the utility model;

[0044] Fig. 9 A three-dimensional diagram of the use state of the fixture of the embodiment of the utility model;

[0045] Fig.10 A front view of a fixture in use according to an embodiment of the utility model. DETAILED DESCRIPTION

[0046] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0047] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0050] In the description of the present utility model, it should be noted that the terms "upper", "lower", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0051] See also Figure 1-Figure 4 As shown, a drum washing machine inner drum tripod of this embodiment includes:

[0052] Connecting sleeve 400;

[0053] At least three support arms 200 are individually processed and formed;

[0054] Each of the support arms 200 is welded to the connecting 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 sleeve 400 .

[0055] In the inner drum tripod of a drum washing machine of this embodiment, the connecting sleeve 400 and at least three supporting arms 200 can be processed and formed separately, and the at least three supporting arms 200 that have been processed are welded and fixed to the connecting sleeve 400 as an integrated structure, which has the following technical effects:

[0056] Firstly, the connecting sleeve 400 and the supporting arm 200 are processed separately, which has lower requirements on processing equipment and is simpler and more flexible than the existing one-piece die-casting method.

[0057] Secondly, the processed connecting sleeve 400 and the supporting arm 200 are fixedly connected into an integrated structure by welding. Compared with the existing integrated die-casting method, the process is simple and reliable, and meets the overall rigidity requirements of the inner drum tripod of the drum washing machine.

[0058] Finally, the above two methods can reduce the overall cost of the inner drum tripod of the drum washing machine of this embodiment, and in the long-term use process, even if it needs to be replaced due to corrosion or fracture, the user's maintenance and replacement costs can be reduced. Moreover, if the connecting sleeve 400 or the support arm 200 can be replaced separately, the user's maintenance and replacement costs will be further reduced.

[0059] In summary, the inner drum tripod of a drum washing machine of the present embodiment reduces the manufacturing cost and can simultaneously meet the rigidity requirements of the entire tripod, thus having broad market value.

[0060] See also Figure 3 and Figure 4 As shown, as an optional implementation of the present embodiment, the connecting sleeve 400 described in the present embodiment has a first shaft segment 401 and a second shaft segment 403, the outer diameter of the first shaft segment 401 is smaller than the outer diameter of the second shaft segment 403, and a mounting step 402 is formed at the intersection of the first shaft segment 401 and the second shaft segment 403; the support arm 200 has a horizontal arm segment 202 and a first vertical arm segment 203 and a second vertical arm segment 204 respectively connected to the two ends of the horizontal arm segment 202, one end of the horizontal arm segment 202 is arranged on the mounting step 402 and is welded and fixed to the outer peripheral wall of the first shaft segment 401, and one end of the first vertical arm segment 203 and one end of the second vertical arm segment 204 are respectively welded and fixed to the outer peripheral wall of the second shaft segment 403.

[0061] In the inner drum tripod of a drum washing machine of the present embodiment, a mounting step 402 is constructed on a connecting sleeve 400, so that when welding the support arm 200, pre-positioning is achieved by overlapping the horizontal arm section 202 of the support arm 200 on the mounting step 402, which facilitates subsequent welding operations and ensures the reliability of welding.

[0062] In addition, the support arm 200 of the present embodiment is fixed by welding to the outer peripheral wall of the first shaft segment 401 through the horizontal arm segment 202, and one end of the first vertical arm segment 203 and one end of the second vertical arm segment 204 are respectively fixed to the outer peripheral wall of the second shaft segment 403, so as to increase the stability and reliability of the welding connection between the support arm 200 and the connecting sleeve 400 as much as possible.

[0063] Further preferably, the end of the horizontal arm section 202 of this embodiment that is welded and fixed to the outer peripheral wall of the first shaft section 401 has an arc-shaped bayonet 201. When the horizontal arm section 202 of the support arm 200 is overlapped on the installation step 402 for pre-positioning, when the arc-shaped bayonet 201 is tightly fitted with the outer peripheral wall of the first shaft section 401, it means that the pre-positioning is in place, and the welding operation between the two can be performed at this time. In addition, since the two are tightly fitted, the connection stability at the welding seam can be further increased.

[0064] Correspondingly, in this embodiment, the ends of the first vertical arm segment 203 and the second vertical arm segment 204 are arranged with arc-shaped end surfaces matching the outer peripheral wall of the second shaft segment 403 .

[0065] Furthermore, in this embodiment, one end of the first vertical arm section 203 away from the horizontal arm section 202 and one end of the second vertical arm section 204 away from the horizontal arm section 202 are both turned outward to form a horizontal turn 205, and the end of the horizontal turn 205 is turned upward to form a vertical turn 206, and the end of one end of the horizontal turn 205 is inclined so that the end of the vertical turn 206 does not protrude from the ends of the first vertical arm section 203 and the second vertical arm section 204; the horizontal turn 205 of two adjacent support arms 200 are spliced ​​and fixed by welding, and the vertical turn 206 of two adjacent support arms 200 are spliced ​​and fixed by welding. In this way, the support arm 200 of this embodiment is welded and fixed to the connecting sleeve 400, and the support arms 200 are also welded and fixed to each other, so that multiple support arms 200 and connecting sleeves 400 become a whole together, ensuring the overall rigidity of the inner drum tripod of the drum washing machine.

[0066] In addition, the above-mentioned structural configuration of the support arm 200 of the present embodiment can increase the structural rigidity of the support arm 200 itself and improve the torque resistance.

[0067] See also Figure 1-Figure 4As shown, a drum washing machine inner drum tripod of this embodiment includes an inner drum connection block 300, one end of the support arm 200 is welded and fixed to the connecting sleeve 400, and the other end of the support arm 200 is welded and fixed to the inner drum connection block 300. The inner drum connection block 300 of this embodiment is used to fix the motor to the inner drum of the drum washing machine. The inner drum connection block 300 of this embodiment can also be manufactured and processed separately, and after the processing is completed, it is welded to the support arm 200 to form an integrated structure.

[0068] See also Figure 4-Figure 6 As shown, the inner cylinder connection block 300 of this embodiment includes a connection plate body and a threaded hole column 303, the connection plate body includes an integrally formed horizontal connection plate body 301 and a vertical connection plate body 302, the threaded hole column 303 is formed by stretching a threaded flange hole column from the vertical connection plate body 302 sheet metal; the vertical flange 206 at the other end of the support arm 200 extends upward and protrudes from the horizontal arm section 202, the tops of the vertical flanges 206 on both sides of the horizontal arm section 202 are flush with each other, and the horizontal connection plate body 301 is welded and fixed to the top of the vertical flange 206, the vertical connecting plate 302 is welded and fixed to the ends 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, and the threaded hole column 303 is arranged in the area jointly enclosed by the first vertical arm section 203, the horizontal flange 205, and the vertical flange 206, and / or the area jointly enclosed by the second vertical arm section 204, the horizontal flange 205, and the vertical flange 206.

[0069] In the inner drum tripod of a drum washing machine of this embodiment, the horizontal connecting piece 301 and the vertical connecting piece 302 of the inner drum connecting block 300 are respectively welded and fixed to the end of the support arm 200 at multiple positions to ensure the integrated welding of the inner drum connecting block 300 and the support arm 200, and to ensure the stability of the connection. The inner drum tripod of a drum washing machine of this embodiment is threadedly fixedly connected to the inner drum of the drum washing machine by connecting bolts passing through the threaded hole column 303.

[0070] See also Figure 3-Figure 4 , Figure 7-Figure 8As shown, the support arm 200 of this embodiment has an integrally formed first support portion 200A, a second support portion 200B and a third support portion 200C along its extension direction. The first support portion 200A and the third support portion 200C are arranged horizontally, and the second support portion 200B is arranged obliquely, so that the first support portion 200A and the third support portion 200C have a height difference in the axial direction of the connecting sleeve; the end of the first support portion 200A is welded and fixed to the outer peripheral wall of the connecting sleeve 400, and the end of the third support portion 200C is welded and fixed to the inner cylinder connecting block 300. The entire structure of the support arm 200 of this 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 radial and axial stress overload.

[0071] Further, see Figure 5 and Figure 8 As shown, the horizontal arm section 202, the first vertical arm section 203, and the second vertical arm section 204 of this embodiment are jointly enclosed to form a first groove 208, the first vertical arm section 203, the horizontal flange 205, and the vertical flange 206 are jointly enclosed to form a second groove 209, and the second vertical arm section 204, the horizontal flange 205, and the vertical flange 206 are jointly enclosed to form a 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 end near the connecting sleeve to the end near the second support part, and the second groove 209 and the third groove 210 of the third support part 200C gradually increase from the end near the second support part to the end near the inner cylinder connecting block. The unique structural design of the support arm 200 of this embodiment meets its overall rigidity requirements, meets the connection stability requirements between the support arm 200 and the connecting sleeve 400, and meets the connection stability requirements between the support arm 200 and the inner cylinder 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.

[0072] See also Figure 4 and Figure 5 As shown, in a drum washing machine inner drum tripod of this embodiment, a concave rib 207 is provided on the horizontal arm section 202 to further enhance the strength of the overall support arm 200 .

[0073] See also Figure 1-Figure 4As shown, a drum washing machine inner drum tripod of this embodiment includes an inner drum shaft 100, the inner drum shaft 100 has a connecting sleeve mounting portion 101, the sleeve mounting portion 101 is mounted in the connecting sleeve 400, the two are fitted by interference fit, and the end a of the sleeve mounting portion 101 is fixed to the connecting sleeve 400 by welding. The inner drum shaft 100 of this embodiment is fitted with the connecting sleeve 400 by interference fit, and is fixed by welding at the same time, which increases the connection strength between the two and ensures the stability of the integral connection between the inner drum shaft 100 and the connecting sleeve 400.

[0074] Furthermore, the inner cylindrical shaft 100 of this embodiment has a first bearing mounting portion 102, and a bearing stop convex ring 104 is provided between the first bearing mounting portion 102 and the connecting sleeve mounting portion 101. The inner cylindrical shaft 100 of this embodiment also has a second bearing mounting portion 103, and a bearing stop step is provided between the second bearing mounting portion 103 and the first bearing mounting portion 102.

[0075] In the drum washing machine inner drum tripod of the present embodiment, the connecting sleeve 400 and at least three support arms 200 can be processed and formed separately, and the at least three support arms 200 processed are welded and fixed to the connecting sleeve 400 as an integrated structure. Therefore, in order to ensure the accurate welding position between each support arm 200 and the connecting sleeve 400, see Fig. 9 and Fig.10 As shown, this embodiment also provides a fixture for processing and producing the inner drum tripod of the drum washing machine, including:

[0076] Fixture bottom plate 501;

[0077] A sleeve positioning shaft 504 is arranged at the center of the fixture bottom plate 501, and the connecting sleeve 400 is sleeved on the sleeve positioning shaft 504;

[0078] At least three support arm clamping assemblies 502 are arranged on the fixture bottom plate 501 and distributed on the periphery of the sleeve positioning shaft 504. The support arm clamping assemblies 502 correspond to the support arms 200 one by one and are used to achieve clamping and positioning of the support arms 200 and the connecting sleeve 400 before welding.

[0079] At least three support arm positioning assemblies 503 are arranged on the fixture base plate 501. The support arm positioning assemblies 503 correspond to the support arms 200 one by one. The support arm positioning assemblies 503 are located between the sleeve positioning shaft 504 and the support arm clamping assembly 502. The support arm positioning assemblies 503 are used for fixing the support arm 200 and the connecting sleeve 400 after the support arm clamping assembly 502 welds and clamps them.

[0080] In view of the welding method of the inner drum tripod of the drum washing machine of this embodiment, this embodiment creatively proposes a tooling fixture of original design, and the fixture bottom plate 501 can be fixedly connected with the support plane to provide an operating platform. The sleeve positioning shaft 504 is used to cover the connecting sleeve 400 to achieve its fixed positioning. The sleeve positioning shaft 504 has an expansion and contraction member that can be opened and contracted. When the expansion and contraction member is in a contracted state, the connecting sleeve 400 is covered on the sleeve positioning shaft 504. The expansion and contraction member opens to make the connecting sleeve 400 no longer rotate relative to the sleeve positioning shaft 504. The support arm clamping assembly 502 is used to realize the clamping and positioning of each support arm and the connecting sleeve 400. After the support arm clamping assembly 502 is used to clamp and position, the support arm positioning assembly 503 is used to fix and position the support arm 200 and the connecting sleeve 400, so as to keep the relative position between the support arm 200 and the connecting sleeve 400 in a fixed state. Therefore, the fixture of this embodiment is used to realize the splicing positioning of the inner drum tripod of the drum washing machine before welding, ensuring that the connection position between the support arm 200 and the connecting sleeve 400 meets the requirements before the welding process is carried out.

[0081] As an optional embodiment of the present invention, see Fig. 9 and Figure 5 As shown, the support arm clamping assembly 502 includes a fixed guide rail 502A, a sliding positioning block 502B and a locking member 502C, wherein the sliding positioning block 502B is slidably mounted on the fixed guide rail 502A, and the locking member 502C includes a locking wheel and a locking top column, wherein one end of the locking top column passes through the sliding positioning block 502B and approaches the fixed guide rail 502A, and the other end is fixedly connected to the locking wheel located outside the sliding positioning block 502B;

[0082] The support arm 200 has a positioning hole 211 at one end near the inner cylinder connection block 300, the fixed guide rail 502A has a positioning column 502E at one end near the sleeve positioning shaft 504, and the fixture bottom plate 501 has at least three groups of first mounting holes 502D, and the first mounting holes 502D extend from far to near to the sleeve positioning shaft 504;

[0083] The support arm 200 is pre-positioned on the connecting sleeve 400, and the positioning hole 211 of the support arm 200 is positioned on the positioning column 502E of the fixing guide rail 502A by adjusting the fixing guide rail 502A and at least two of the first mounting holes 502D to be fixedly connected through the connecting piece, so as to clamp and position the support arm 200;

[0084] The inner cylinder connection block 300 is placed on the sliding positioning block 502B, and the sliding positioning block 502B is adjusted to slide along the fixed guide rail 502A. The sliding positioning block 502B pushes the inner cylinder connection block 300 and the support arm 200 to be spliced. The locking wheel is operated to drive the locking top column to press against the fixed guide rail 502A to clamp and position the inner cylinder connection block 300.

[0085] As an optional embodiment of the present invention, see Fig. 9 As shown, the clamp base plate 501 has at least three groups of second mounting holes 503A, and each group of second mounting holes 503A is located on one side of each group of first mounting holes 502D. The arrangement direction of the second mounting holes 503A is the same as the arrangement direction of the first mounting holes 502D. By adjusting the support arm positioning assembly 503 and fixing it with at least two of a group of second mounting holes 503A through a connecting piece, the support arm positioning assembly 503 is pressed on the support arm 200 for fixed positioning.

[0086] Specifically, the support arm positioning assembly 503 of this embodiment includes a fixed base 503B and a clamping arm 503. The fixed base 503B is fixedly connected to the second mounting hole 503A. The clamping arm 503 can be installed on the fixed base 503B in an openable and closable manner. Pressing the clamping arm 503 to open can release the fixed positioning of the support arm 200. The clamping arm 503 is placed on the upper part of the support arm 200, and the clamping arm 503 clamps and fixes the support arm 200.

[0087] This embodiment also provides a drum washing machine having the drum washing machine inner drum tripod, comprising an inner drum, wherein the free end of the support arm of the drum washing machine inner drum tripod is fixedly connected to the bottom flange of the inner drum.

[0088] The drum washing machine of this embodiment adopts the drum washing machine inner drum tripod to meet the transmission rigidity requirements of the connection between the driving motor and the inner drum, while reducing the cost of the whole machine and the cost of subsequent use and maintenance.

[0089] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention are included in the scope of the claims of the present invention.

Claims

1. A drum washing machine inner drum tripod, characterized in that: include: Connecting sleeve; At least three support arms, each of which is individually machined and formed; Each of the support arms is welded to the connecting sleeve to form an integral structure, and each of the support arms is evenly distributed along the outer peripheral wall of the connecting sleeve.

2. The inner drum tripod of a drum washing machine 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 the outer diameter 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 comprises a horizontal arm section and a first vertical arm section and a second vertical arm section respectively connected to two ends of the horizontal arm section, one end of the horizontal arm section is arranged on the mounting step and is welded and fixed 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 respectively welded and fixed to the outer peripheral wall of the second shaft section.

3. The inner drum tripod of a drum washing machine according to claim 2, characterized in that: One end of the first vertical arm section away from the horizontal arm section and one end of the second vertical arm section away from the horizontal arm section are both turned outward to form a horizontal turn, and the end of the horizontal turn is turned upward to form a vertical turn, and the end of one end of the horizontal turn is inclined so that the end of the vertical turn 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. The inner drum tripod of a drum washing machine according to claim 3, characterized in that: It comprises an inner cylinder connection block, one end of the support arm is welded and fixed to the connection sleeve, and the other end of the support arm is welded and fixed to the inner cylinder connection block.

5. The inner drum tripod of a drum washing machine according to claim 4, characterized in that: 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, the threaded hole column is formed by stretching a threaded flange hole column from the vertical connecting sheet body sheet metal; the vertical flange at the other end of the support arm extends upward and protrudes from the horizontal arm section, the tops of the vertical flanges on both sides of the horizontal arm section are flush with each other, the horizontal connecting sheet body is welded and fixed to the top of the vertical flange, the vertical connecting sheet body is welded and fixed to the end portions 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 area enclosed by the first vertical arm section, the horizontal flange and the vertical flange, and / or the area enclosed by the second vertical arm section, the horizontal flange and the vertical flange.

6. A drum washing machine inner drum tripod according to claim 4 or 5, characterized in that: The support arm has an integrally formed first support portion, a second support portion and a third support portion along its extension direction, the first support portion and the third support portion are arranged horizontally, and the second support portion is arranged obliquely, so that the first support portion and the third support portion have a height difference in the axial direction of the connecting sleeve; the end of the first support portion is welded and fixed to the outer peripheral wall of the connecting sleeve, and the end of the third support portion is welded and fixed to the inner cylinder connecting block; The horizontal arm section, the first vertical arm section, and the second vertical arm section together form a first groove, the first vertical arm section, the horizontal flange, and the vertical flange together form a second groove, and the second vertical arm section, the horizontal flange, and the vertical flange together form 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, and the second groove and the third groove of the first support part gradually decrease from the end near the connecting sleeve to the end near the second support part, and the second groove and the third groove of the third support part gradually increase from the end near the second support part to the end near the inner tube connecting block.

7. The inner drum tripod of a drum washing machine according to claim 1, characterized in that: It comprises an inner cylinder shaft, which has a connecting sleeve mounting portion. The sleeve mounting portion is mounted in the connecting sleeve, and the two are fitted by interference fit. The end of the sleeve mounting portion is fixed to the connecting sleeve by welding.

8. A fixture for processing and producing the inner drum tripod of a drum washing machine as claimed in any one of claims 1 to 7, characterized in that: include: Fixture base plate; A sleeve positioning shaft is arranged at the center of the fixture bottom plate, and the connecting sleeve is sleeved on the sleeve positioning shaft; At least three support arm clamping assemblies are arranged on the fixture bottom plate and distributed on the periphery of the sleeve positioning shaft, the support arm clamping assemblies correspond to the support arms one by one, and are used to achieve clamping and positioning of the support arms before welding the connecting sleeves; At least three support arm positioning assemblies are arranged on the fixture base 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 assembly, and the support arm positioning assemblies are used for fixing the support arm and the connecting sleeve after the support arm clamping assembly welds and clamps the support arm.

9. A fixture according to claim 8, characterized in that: The support arm clamping assembly includes a fixed guide rail, a sliding positioning block and a locking piece, wherein the sliding positioning block is slidably mounted on the fixed guide rail, and the locking piece includes a locking wheel and a locking top column, wherein one end of the locking top column passes through the sliding positioning block and approaches the fixed guide rail, and the other end is fixedly connected to the locking wheel located outside the sliding positioning block; The support arm has a positioning hole at one end near the inner cylinder connection block, the fixed guide rail has a positioning column at one end near the sleeve positioning shaft, and the fixture bottom plate has at least three groups of first mounting holes, and the first mounting holes extend from far to near to the sleeve positioning shaft; Pre-position the support arm on the connecting sleeve, adjust the fixed guide rail and at least two of the first mounting holes to be fixedly connected through a connecting piece, position the positioning hole of the support arm on the positioning column of the fixed guide rail, and clamp and position the support arm; The inner cylinder connection block is placed on the sliding positioning block, and the sliding positioning block is adjusted to slide along the fixed guide rail, and the sliding positioning block pushes the inner cylinder connection block to be spliced ​​with the support arm, and the locking top column is driven to press against the fixed guide rail by operating the locking wheel to clamp and position the inner cylinder connection block; 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, and the support arm positioning assembly is adjusted to be fixedly connected to at least two of the second mounting holes in a group through a connecting piece, and the support arm positioning assembly is pressed on the support arm for fixed positioning.

10. A drum washing machine having the drum tripod as claimed in any one of claims 1 to 7, characterized in that: The drum washing machine comprises an inner drum, wherein the free end of the support arm of the inner drum tripod is fixedly connected to the flange at the bottom of the inner drum.

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