Flexible brake control device for washing machine

Abstract

The utility model discloses a flexible brake control device for a washing machine, which relates to the technical field of washing machines, and is characterized in that the flexible brake control device for the washing machine comprises a hydraulic telescopic assembly, a power transmission assembly and a brake assembly, the hydraulic telescopic assembly comprises a hydraulic cylinder serving as a power source, the front end of a piston rod of the hydraulic cylinder is rotationally connected with a speed regulating rod through a bearing, and the speed regulating rod is pulled to move front and back through the piston rod. And in a normal operation program, the speed of the drum is slowly reduced by switching back to the initial transmission ratio and adopting flexible braking, so that the problem that a brake disc is greatly abraded due to the fact that the washing machine always uses a rapid braking mode is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of washing machines, and more specifically to a flexible braking control device for washing machines. Background Art

[0002] A washing machine is a cleaning appliance that uses electrical energy to generate mechanical action to wash clothes. It is divided into two categories according to its rated washing capacity: household and collective use. Mechanical force, detergent and water are the three elements in the washing process of the washing machine. The mechanical force generated by the moving parts of the washing machine and the action of the detergent separate the dirt from the clothing fibers.

[0003] The washing machine clutch has brake pads, which are suitable for normal braking in the program and emergency stop in special circumstances. When special circumstances occur, fast braking response and short braking time are required. In the running program setting, the washing machine will brake the drum after the washing and dehydration are completed to reduce the braking time and allow the washing machine to quickly enter the next program.

[0004] However, the existing washing machines usually have non-adjustable braking time and only have a rapid braking mode, which is mostly controlled by the main board transmitting electrical signals. Long-term use of rapid braking causes greater wear on the brake disc, reducing the service life of the brake disc.

[0005] Therefore, in order to solve the above technical problems, the present application proposes a flexible brake control device for a washing machine. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model aims to provide a flexible brake control device for a washing machine.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the flexible brake control device for a washing machine comprises a hydraulic telescopic component, a power transmission component and a brake component;

[0008] The hydraulic telescopic assembly is used to adjust the transmission ratio by telescopic adjustment. The hydraulic telescopic assembly includes a hydraulic cylinder as a power source. The front end of the piston rod of the hydraulic cylinder is rotatably connected to a speed regulating rod through a bearing. The speed regulating rod is pulled forward and backward by the piston rod. The speed regulating rod is provided with a first transmission gear and a second transmission gear.

[0009] The power transmission assembly includes a motor and a brake rod arranged at the front end of the motor, the brake rod is provided with a first brake gear and a second brake gear, the first transmission gear is meshed with the first brake gear, and the second transmission gear is meshed with the second brake gear.

[0010] Preferably, the outer diameter of the first transmission gear is smaller than that of the first brake gear, and the outer diameter of the second transmission gear is larger than that of the second brake gear, so that the speed of the speed regulating lever is increased by meshing the first transmission gear and the first brake gear.

[0011] Preferably, the sum of the outer diameters of the first transmission gear and the first brake gear is equal to the sum of the outer diameters of the second transmission gear and the second brake gear, and the speed regulating lever and the brake lever are arranged in parallel so that the speed regulating lever can be moved to switch the gear meshing state, thereby switching different transmission ratios.

[0012] Preferably, a rib is provided at the front end of the speed regulating rod, and the rib is slidably connected in a key hole slot, and the key hole slot penetrates through the brake block so that the brake block can be driven to rotate by rotating the speed regulating rod.

[0013] Preferably, the flexible brake control device for a washing machine further comprises a brake assembly, and the brake assembly is installed at the bottom of the drum of the washing machine for braking the drum.

[0014] Preferably, the brake assembly comprises two arc-shaped brake discs with openings facing each other, one end of the arc-shaped brake discs are rotatably connected together, and a brake block is rotatably connected in the opening of the other end, and the brake block is rotated to expand the area occupied by the brake disc to squeeze the surface of the drum to slow down and stop.

[0015] Preferably, a tension spring is installed on the inner wall of the brake disc to maintain the two brake discs closed under normal conditions, and a brake pad is provided on the outer wall of the brake disc to increase the friction area and improve the deceleration effect.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. In the utility model, by setting a hydraulic telescopic component, it can drive the gear to move forward to change the transmission ratio in an emergency, increase the rotation speed of the brake block, and achieve the technical effect of rapid braking. In the normal operation program, it switches back to the initial transmission ratio and adopts flexible braking to slowly slow down the drum, thereby solving the problem of large wear of the brake disc caused by the washing machine always using the rapid braking mode.

[0018] 2. In the utility model, by providing a key hole groove on the brake block, the brake block can be kept in its original position when the speed regulating lever drives the gear to move, ensuring that when the brake block needs to be rotated, uneven braking will not be caused due to deviation of the brake block position, thereby avoiding excessive wear of the brake disc caused by uneven braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the hydraulic telescopic component and the power transmission component in the utility model;

[0022] Figure 3 It is a structural schematic diagram of the brake assembly in the utility model.

[0023] 1. Hydraulic telescopic components;

[0024] 11. Hydraulic cylinder; 12. Speed ​​regulating lever; 13. First transmission gear; 14. Second transmission gear; 15. Ribbon;

[0025] 2. Power transmission components;

[0026] 21. Motor; 22. Brake rod; 23. First brake gear; 24. Second brake gear;

[0027] 3. Brake pads;

[0028] 31. Keyhole slot;

[0029] 4. Braking components;

[0030] 41. Tension spring; 42. Brake disc; 43. Brake pad. DETAILED DESCRIPTION

[0031] like Figure 1-3 As shown, a flexible brake control device for a washing machine includes a brake assembly 4, which is installed at the bottom of the washing machine drum to brake the drum;

[0032] The brake assembly 4 includes two arc-shaped brake discs 42 with openings facing each other. One end of the arc-shaped brake discs 42 is rotatably connected together, and a brake block 3 is rotatably connected in the opening of the other end. The brake block 3 is rotated to expand the area occupied by the brake disc 42 to squeeze the surface of the drum, thereby slowing down and stopping.

[0033] A tension spring 41 is installed on the inner wall of the brake disc 42 to maintain the two brake discs 42 closed in a normal state, and a brake pad 43 is arranged on the outer wall of the brake disc 42 to increase the friction area and improve the deceleration effect;

[0034] The flexible brake control device for a washing machine further comprises a hydraulic telescopic component 1 and a power transmission component 2;

[0035] The hydraulic telescopic assembly 1 is used for telescopically adjusting the transmission ratio. The hydraulic telescopic assembly 1 includes a hydraulic cylinder 11 as a power source. The front end of the piston rod of the hydraulic cylinder 11 is rotatably connected to a speed regulating rod 12 through a bearing. The speed regulating rod 12 is pulled forward and backward by the piston rod. The speed regulating rod 12 is provided with a first transmission gear 13 and a second transmission gear 14.

[0036] The power transmission assembly 2 includes a motor 21 and a brake rod 22 disposed at the front end of the motor 21. The brake rod 22 is provided with a first brake gear 23 and a second brake gear 24. The first transmission gear 13 is meshed with the first brake gear 23, and the second transmission gear 14 is meshed with the second brake gear 24.

[0037] A rib 15 is provided at the front end of the speed regulating rod 12, and the rib 15 is slidably connected in the key hole slot 31, and the key hole slot 31 is penetrated and opened in the brake block 3, so that the brake block 3 can be driven to rotate by the rotation of the speed regulating rod 12;

[0038] In the initial state, the second transmission gear 14 and the second brake gear 24 are meshed, and the motor 21 is connected to the central control system of the washing machine. When braking is required in the setting program of the washing machine, an electrical signal is sent to the motor 21, so that the output shaft of the motor 21 drives the brake lever 22 to rotate, and the second brake gear 24 on the brake lever 22 is meshed with the second transmission gear 14, and the speed regulating lever 12 is driven to rotate at the initial speed through gear transmission;

[0039] like Figure 1 and Figure 3 As shown, the brake block 3 in the embodiment is rectangular. Under normal conditions, the brake block 3 supports the brake disc 42 at the side, and the brake disc 42 is closed, which does not affect the rolling rotation. When braking is required, the speed regulating lever 12 rotates to drive the brake block 3 to rotate, and the brake block 3 switches to an oblique angle support, and the oblique angle distance is greater than the distance between the sides, increasing the gap between the brake discs 42, and the brake discs 42 expand outward to increase the friction force on the drum, and finally stop the drum from rotating;

[0040] In an emergency, such as when the door of the washing machine is accidentally opened, a signal is transmitted to the central control system of the washing machine, and the hydraulic cylinder 11 is connected to the central control system of the washing machine through an electrical signal. After the signal is transmitted to the hydraulic cylinder 11, the piston rod of the hydraulic cylinder 11 extends, and the speed regulating rod 12 drives the first transmission gear 13 and the second transmission gear 14 to move, so that the gear meshing state is changed to the first transmission gear 13 and the first brake gear 23 meshing;

[0041] On the other side, the electrical signal in an emergency situation is also transmitted to the motor 21, and the motor 21 starts braking after the telescopic rod has completed its movement;

[0042] The outer diameter of the first transmission gear 13 is smaller than the outer diameter of the first brake gear 23, the outer diameter of the second transmission gear 14 is larger than the outer diameter of the second brake gear 24, the sum of the outer diameters of the first transmission gear 13 and the first brake gear 23 is equal to the sum of the outer diameters of the second transmission gear 14 and the second brake gear 24, the speed regulating lever 12 and the brake lever 22 are arranged in parallel, so that the speed regulating lever 12 can be moved to switch the gear meshing state, thereby switching different transmission ratios;

[0043] When the speed of the motor 21 remains unchanged, the angular velocity of the first brake gear 23 is greater than the angular velocity of the second brake gear 24. After the angular velocity of the first brake gear 23 is transmitted to the first transmission gear 13 whose outer diameter is smaller than the first brake gear 23, the speed of the speed regulating rod 12 increases. Therefore, after the meshing state is switched, the speed of the speed regulating rod 12 is increased, so that the speed regulating rod 12 drives the brake block 3 to rotate quickly, shortens the braking time, and realizes rapid braking.

[0044] When the washing machine operates normally again next time, a signal will be sent to the hydraulic cylinder 11 to reset the piston rod and restore the second brake gear 24 to the meshing state with the second transmission gear 14;

[0045] Therefore, by setting up a hydraulic telescopic component 1, in an emergency, it can drive the gear to move forward to change the transmission ratio, increase the rotation speed of the brake block 3, and achieve the technical effect of rapid braking. In the normal operating procedure, it switches back to the initial transmission ratio and adopts flexible braking to slowly slow down the drum, thereby solving the problem of large wear of the brake disc 42 caused by the washing machine always using the rapid braking mode.

[0046] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A flexible brake control device for a washing machine, characterized in that: The flexible brake control device for a washing machine comprises a hydraulic telescopic component (1), a power transmission component (2) and a brake component (4); The hydraulic telescopic assembly (1) is used for telescopically adjusting the transmission ratio. The hydraulic telescopic assembly (1) comprises a hydraulic cylinder (11) as a power source. The front end of the piston rod of the hydraulic cylinder (11) is rotatably connected to a speed regulating rod (12) via a bearing. The speed regulating rod (12) is pulled forward and backward by the piston rod. The speed regulating rod (12) is provided with a first transmission gear (13) and a second transmission gear (14). The power transmission assembly (2) comprises a motor (21) and a brake rod (22) arranged at the front end of the motor (21); a first brake gear (23) and a second brake gear (24) are arranged on the brake rod (22); the first transmission gear (13) is meshed with the first brake gear (23); and the second transmission gear (14) is meshed with the second brake gear (24).

2. A flexible brake control device for a washing machine according to claim 1, characterized in that: The outer diameter of the first transmission gear (13) is smaller than the outer diameter of the first brake gear (23), and the outer diameter of the second transmission gear (14) is larger than the outer diameter of the second brake gear (24). The rotation speed of the speed regulating lever (12) is increased by meshing the first transmission gear (13) and the first brake gear (23).

3. A flexible brake control device for a washing machine according to claim 2, characterized in that: The sum of the outer diameters of the first transmission gear (13) and the first brake gear (23) is equal to the sum of the outer diameters of the second transmission gear (14) and the second brake gear (24), and the speed regulating lever (12) and the brake lever (22) are arranged in parallel.

4. A flexible brake control device for a washing machine according to claim 3, characterized in that: The front end of the speed regulating rod (12) is provided with a rib (15), and the rib (15) is slidably connected in a key hole groove (31), and the key hole groove (31) penetrates and is opened in the brake block (3).

5. A flexible brake control device for a washing machine according to claim 4, characterized in that: The flexible brake control device for a washing machine further comprises a brake assembly (4), which is installed at the bottom of the drum of the washing machine and is used to brake the drum.

6. A flexible brake control device for a washing machine according to claim 5, characterized in that: The brake assembly (4) comprises two arc-shaped brake discs (42) with openings facing each other. One end of the arc-shaped brake discs (42) are rotatably connected together, and a brake block (3) is rotatably connected in the opening of the other end. The brake block (3) is rotated to expand the area occupied by the brake disc (42) to squeeze the surface of the drum, thereby slowing down and stopping.

7. A flexible brake control device for a washing machine according to claim 6, characterized in that: A tension spring (41) is installed on the inner wall of the brake disc (42) to maintain the two brake discs (42) closed in a normal state, and a brake pad (43) is arranged on the outer wall of the brake disc (42) to increase the friction area and improve the deceleration effect.

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