Logging device for drum motor of washing machine

Abstract

The utility model discloses a washing machine drum motor stalling device which comprises a clamping mechanism used for being fixed on a washing machine shell and an expanding mechanism used for being expanded in a washing machine drum, and the opening degree of the expanding mechanism is controlled through an adjusting mechanism. The utility model aims to provide the locked-rotor device for the drum motor of the washing machine, which can be used for detecting the drum motor after the drum motor of the washing machine is installed so as to timely find and solve the potential motor problem when the whole machine runs, thereby avoiding the performance reduction or fault of the washing machine in the use process and prolonging the service life of the washing machine. And stable operation of the washing machine and good user experience are ensured. The device is ingenious in design and simple to operate, can efficiently detect the running state of the drum motor of the washing machine, and has important significance for improving the overall quality of the washing machine and the satisfaction degree of users.

Description

Technical Field

[0001] This utility model belongs to the technical field of stall testing of motors in the installed state, and specifically relates to a stall testing device for washing machine drum motors. Background Technology

[0002] The stall test of a washing machine drum motor aims to evaluate the motor's performance and safety under stall conditions. Specifically, the stall test helps achieve the following objectives:

[0003] 1. Motor Performance and Health Check: A stall test can detect parameters such as current and power of the washing machine drum motor when it is stalled, thereby assessing the motor's performance. If the motor exhibits abnormalities during stalling, such as excessive current or excessive power, it may indicate a motor malfunction or performance degradation, requiring timely repair or replacement.

[0004] 2. Ensure safe motor operation: The stall test can also check the motor's self-protection capabilities under extreme conditions. In a stalled state, the motor may pose safety risks due to excessive current or overheating. This test ensures that the motor can stop promptly in such situations, preventing fires and other safety accidents, thus protecting user safety.

[0005] 3. Optimize motor design and manufacturing: For motor manufacturers, stall testing is an important means of optimizing motor design and manufacturing. Through testing, potential problems in the motor design and manufacturing process can be identified, such as unreasonable stator-rotor air gaps or rotor defects, allowing for improvements and optimizations to the motor, thereby enhancing its performance and reliability.

[0006] 4. Improve overall washing machine performance: The performance of the washing machine drum motor directly affects the overall performance of the washing machine. Stall-start testing ensures the stability and reliability of the motor during operation, thereby improving washing results and user experience.

[0007] Chinese invention patent ZL202410613360.2 discloses a test device and method for motor stall, including an L-shaped test frame. The top of the horizontal plate of the test frame is provided with an adjustable height placement platform for placing the motor to be tested. On the side of the placement platform located at the end of the motor, a clamping and limiting mechanism is provided for abutting the position of the motor. The placement platform and the clamping and limiting mechanism are connected by a connecting member. By setting a motor port plate and opening a mounting slot that cooperates with the motor to be tested, the motor can be limited within the motor port plate. With the clamping and limiting mechanism, the position of the motor can be clamped and fixed. When testing different models of motors, it is only necessary to disassemble and replace the motor port plate with a motor port plate with the corresponding mounting slot, and then replace the corresponding spline sleeve.

[0008] However, the aforementioned motor stall testing equipment and methods are mainly suitable for independent testing before motor installation. For washing machine drum motors, once installed, due to the complexity of the washing machine's internal structure and the unique operating environment, it is difficult to verify the impact of the drum motor in a stalled state on the entire washing machine. This makes it difficult to detect some potential problems, thus affecting the overall performance of the washing machine and the user experience. Utility Model Content

[0009] The purpose of this invention is to provide a stall device for a washing machine drum motor. This device can detect the drum motor after installation, promptly identify and resolve potential motor problems during machine operation, thereby preventing performance degradation or malfunctions and ensuring stable operation and a good user experience. The device is ingeniously designed, simple to operate, and efficiently detects the operating status of the washing machine drum motor, which is of great significance for improving the overall quality of the washing machine and user satisfaction.

[0010] To achieve the above objectives, this utility model provides a stall device for a washing machine drum motor, the key of which is: it includes a clamping mechanism for fixing to the outer casing of the washing machine and an expansion mechanism for expanding in the washing machine drum, the opening of which is controlled by an adjusting mechanism.

[0011] Furthermore, the clamping mechanism includes a three-point bracket, each arm of which is smoothly connected to a transverse extension section at its end, and each transverse extension section is connected to an abutment seat for abutting against the outer shell of the washing machine by a hand-adjusting bolt.

[0012] Furthermore, the included angle between two adjacent arms of the three-point bracket is 120°.

[0013] Furthermore, the abutment seat adopts a flexible suction cup structure with a hollowed-out bottom.

[0014] Furthermore, the expansion mechanism includes a lateral extension arm disposed on each of the support arms, the end of which is connected to a tensioning seat and an adjustment mechanism via a multi-link structure.

[0015] Furthermore, the multi-link structure includes at least two first links that are hinged in parallel to the end of the lateral extension arm, the end of each first link being hinged together to a radially arranged second link, the end of the second link being fitted with a tensioning seat via a mounting plate; an inwardly extending extension rod is also connected to one of the first links, the end of the extension rod being hinged to the output component of the adjustment mechanism.

[0016] Furthermore, the expansion seat is made of a flexible material, and its contact surface with the washing machine drum is adapted to be an arc surface, and the arc surface is roughened.

[0017] Furthermore, the adjustment mechanism includes a connecting seat as an output component, the connecting seat being connected to the three-point bracket via a telescopic guide post, and the lateral position of the telescopic guide post being adjusted by a handwheel.

[0018] Furthermore, a screw is provided laterally between the connecting seat and the three-point bracket. One end of the screw is rotatably connected to the center position of the connecting seat, and the other end of the screw passes through the three-point bracket through a pre-drilled screw hole and is connected to the handwheel.

[0019] Compared with the prior art, the significant advantages of this utility model are:

[0020] (1) The innovative three-point bracket and lateral extension section design allow the clamping mechanism to perfectly fit the overall contour of commercially available washing machines. At the same time, the manual adjustment bolts and the flexible suction cup structure at the bottom ensure a tight fit with the outer shell, allowing the clamping mechanism to be securely installed on the washing machine shell;

[0021] (2) The tensioning seat is extended from the inlet of the washing machine to the inside of the drum by an extension arm, and a multi-link structure is used to realize the transmission connection between the tensioning seat and the adjustment mechanism, ensuring stable support of the washing machine drum in a stalled state. This design, together with the clamping mechanism and the adjustment mechanism, provides ideal experimental conditions for stall testing of the drum motor in the installed state;

[0022] (3) The adjustment mechanism can adjust the opening of the expansion support mechanism to adapt to different stall force requirements, ensure that various stall conditions are met, and it is compatible with multiple washing machine models, thereby enhancing the flexibility and applicability of the device.

[0023] (4) The expansion seat, made of flexible material and with an arc-shaped design, improves the fit with the washing machine drum, enhancing stability and safety during stalling. Furthermore, it prevents damage to the washing machine drum. Simultaneously, the roughening process further increases friction, effectively preventing the drum from sliding during stalling.

[0024] (5) By working together with the handwheel and screw, and by using the guiding function of the telescopic guide column to accurately adjust the lateral position of the connecting seat, combined with the transmission efficiency of the multi-link structure, the operation process is simplified, thereby improving work efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a perspective view (a) of the stall device of the washing machine drum motor in Embodiment 1;

[0027] Figure 2 This is a perspective view (II) of the stall device of the washing machine drum motor in Embodiment 1;

[0028] Figure 3 This is a perspective view (III) of the stall device of the washing machine drum motor in Embodiment 1;

[0029] Figure 4 This is a perspective view (four) of the stall device of the washing machine drum motor in Embodiment 1;

[0030] Figure 5 yes Figure 4 Enlarged view of part A in the middle;

[0031] Figure 6 This is a diagram showing the usage status of the stall device for the washing machine drum motor in Embodiment 1 (I);

[0032] Figure 7 This is a diagram showing the usage status of the stall device for the washing machine drum motor in Embodiment 1 (II);

[0033] Figure 8 This is a diagram showing the usage status of the stall device for the washing machine drum motor in Embodiment 1 (Part 3);

[0034] Numbering in the diagram: 1-Clamping mechanism, 2-Expansion mechanism, 3-Adjustment mechanism, 4-Washing machine outer shell, 5-Washing machine drum, 101-Three-point bracket, 102-Horizontal extension section, 103-Manual adjustment bolt, 104-Abutment seat, 201-Horizontal extension arm, 202-Multi-link structure, 203-Tightening seat, 2021-First link, 2022-Second link, 2023-Mounting plate, 2024-Extension rod, 301-Connecting seat, 302-Telescopic guide post, 303-Handwheel, 304-Screw, 305-Screw hole. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] Figures 1 to 8 The first embodiment of the present invention is shown: a motor stall device for a washing machine drum 5, characterized in that: it includes a clamping mechanism 1 for fixing to the outer casing 4 of the washing machine and an expansion mechanism 2 for expanding in the washing machine drum 5, the opening of the expansion mechanism 2 being controlled by an adjusting mechanism 3.

[0038] like Figures 2 to 4 As shown, in a specific implementation, the clamping mechanism 1 includes a three-point bracket 101. Each arm of the three-point bracket 101 is smoothly connected to a transverse extension section 102 at its end. Each transverse extension section 102 is connected to an abutment seat 104 for abutting against the washing machine casing 4 via a hand-adjusting bolt 103. The included angle between two adjacent arms of the three-point bracket 101 is 120°. Preferably, the abutment seat 104 adopts a flexible suction cup structure with a hollowed-out bottom. When needed, the operator can easily adjust the position of the abutment seat 104 via the hand-adjusting bolt 103 to ensure that the clamping mechanism 1 can tightly fit the washing machine casing 4 of different models and sizes. In addition, the included angle between each arm of the three-point bracket 101 is 120°. This design makes the clamping mechanism 1 more uniform and stable under force, effectively avoiding damage or loosening caused by uneven force.

[0039] In this embodiment, the expansion mechanism 2 includes a lateral extension arm 201 disposed on each of the support arms. The end of the lateral extension arm 201 is connected to a tensioning seat 203 and an adjustment mechanism 3 via a multi-link structure 202. (Refer to...) Figure 5The multi-link structure 202 includes at least two first links 2021 that are hinged in parallel to the end of the transverse extension arm 201. The end of each first link 2021 is hinged to a radially arranged second link 2022. The end of the second link 2022 is also fitted with a tensioning seat 203 via a mounting plate 2023. An inwardly extending extension rod 2024 is also connected to one of the first links 2021, and the end of the extension rod 2024 is hinged to the output component of the adjustment mechanism 3. Specifically, the tensioning seat 203 is made of a flexible material, and its contact surface with the washing machine drum 5 is adapted to be an arc surface, which is roughened. When the adjustment mechanism 3 is working, the extension rod 2024 pushes the first link 2021, causing relative rotation between the first link 2021 and the second link 2022, thereby driving the tensioning seat 203 to move radially, thus blocking the motor of the washing machine drum 5. The tension seat 203 fits tightly against the washing machine drum 5, increasing stability and reliability in case of stall. Furthermore, the opening and tension force of the tension seat 203 relative to the washing machine drum 5 can be easily adjusted via the adjustment mechanism 3 to accommodate different models of washing machine drum 5 motors.

[0040] from Figures 2 to 4 As can be seen, in specific application scenarios, the adjustment mechanism 3 includes a connecting seat 301 as an output component. The connecting seat 301 is connected to the three-point bracket 101 via a telescopic guide post 302, and the lateral position of the telescopic guide post 302 is adjusted by a handwheel 303. Specifically, a screw 304 is laterally arranged between the connecting seat 301 and the three-point bracket 101. One end of the screw 304 is rotatably connected to the center position of the connecting seat 301, and the other end of the screw 304 passes through the three-point bracket 101 through a pre-drilled screw hole 305 and is connected to the handwheel 303. When the handwheel 303 rotates, it can drive the screw 304 to rotate, thereby driving the connecting seat 301 to move laterally under the influence of the telescopic guide post 302, achieving precise adjustment of the position of the connecting seat 301. This design not only makes the adjustment process simpler and faster, but also improves the accuracy and stability of the adjustment, ensuring that the tensioning seat 203 can be accurately aligned and tightly fitted to the surface of the washing machine drum 5 to apply a stall tensioning force to the washing machine drum 5. In some other embodiments, a cylinder, electric cylinder, or other driving component can be arranged laterally between the connecting seat 301 and the three-point bracket 101 to adjust the lateral position of the connecting seat 301.

[0041] It's worth noting that washing machines typically include top-loading (top-loading) and front-loading (side-loading) machines. More broadly, they also include spin dryers. The washing machine drum is the tub where clothes are loaded; it's one of the most crucial components, responsible for loading and rotating the clothes to complete the washing, rinsing, and spin-drying processes. Our stall devices are compatible with different types of washing machines, ensuring stable and effective operation.

[0042] In summary, this utility model employs an innovative three-point bracket 101 and a transverse extension section 102 design, allowing the clamping mechanism 1 to perfectly fit the overall contour of a commercially available washing machine. Simultaneously, the manual adjustment bolts and the flexible suction cup structure at the bottom ensure a tight fit with the outer casing, enabling the clamping mechanism 1 to be securely mounted on the washing machine casing 4. The extension arm extends the expansion seat 203 from the washing machine's inlet to the inside of the drum, and the multi-link structure 202 achieves a transmission connection between the expansion seat 203 and the adjustment mechanism 3, ensuring stable support for the washing machine drum 5 in a stalled state. This design, working in conjunction with the clamping mechanism 1 and the adjustment mechanism 3, provides ideal experimental conditions for stall testing of the drum motor in the installed state. The adjustment mechanism 3 can adjust the opening of the expansion mechanism 2 to adapt to different stall force requirements, ensuring compatibility with various stall conditions. Furthermore, it is compatible with multiple washing machine models, thereby enhancing the flexibility and applicability of the device. The expansion seat 203, made of flexible materials and featuring a curved surface design, improves the fit with the washing machine drum 5, enhancing stability and safety during stalling. Furthermore, it avoids damage to the washing machine drum 5. At the same time, the roughening process further increases friction, effectively preventing the drum from slipping during stalling. Through the coordinated work of the handwheel 303 and the screw 304, and with the guiding function of the telescopic guide post 302, the lateral position of the connecting seat 301 is precisely adjusted. Combined with the transmission efficiency of the multi-link structure 202, the operation process is simplified, thereby improving work efficiency.

[0043] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A stall device for a washing machine drum motor, characterized in that: It includes a clamping mechanism for fixing to the outer casing of the washing machine and an expansion mechanism for expanding within the washing machine drum, the opening of which is controlled by an adjustment mechanism.

2. The stall device for the washing machine drum motor according to claim 1, characterized in that: The clamping mechanism includes a three-point bracket, each arm of which is smoothly connected to a transverse extension section at its end. Each transverse extension section is connected to an abutment seat for abutting against the outer shell of the washing machine by a hand-adjusting bolt.

3. The stall device for the washing machine drum motor according to claim 2, characterized in that: The included angle between two adjacent arms of the three-point support is 120°.

4. The stall device for the washing machine drum motor according to claim 3, characterized in that: The abutment seat adopts a flexible suction cup structure with a hollowed-out bottom.

5. The washing machine drum motor stall device according to any one of claims 2-4, characterized in that: The expansion mechanism includes a lateral extension arm disposed on each of the support arms, and the end of the lateral extension arm is connected to a tension seat and an adjustment mechanism via a multi-link structure.

6. The stall device for the washing machine drum motor according to claim 5, characterized in that: The multi-link structure includes at least two first links that are hinged in parallel to the end of the lateral extension arm. The end of each first link is hinged to a radially arranged second link. The end of the second link is also fitted with a tensioning seat via a mounting plate. An inwardly extending extension rod is also connected to one of the first links, and the end of the extension rod is hinged to the output component of the adjustment mechanism.

7. The stall device for a washing machine drum motor according to claim 6, characterized in that: The expansion seat is made of flexible material, and its contact surface with the washing machine drum is adapted to be an arc surface, which is then roughened.

8. The stall device for a washing machine drum motor according to claim 6 or 7, characterized in that: The adjustment mechanism includes a connecting seat as an output component. The connecting seat is connected to the three-point bracket via a telescopic guide column, and the lateral position of the telescopic guide column is adjusted by a handwheel.

9. The stall device for a washing machine drum motor according to claim 8, characterized in that: A screw is horizontally arranged between the connecting seat and the three-point bracket. One end of the screw is rotatably connected to the center position of the connecting seat, and the other end of the screw passes through the three-point bracket through a pre-drilled screw hole and is connected to the handwheel.

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