DD motor for high space utilization type washing machine

Abstract

The utility model discloses a high space utilization type DD motor for a washing machine, which comprises a shell, a driving mechanism is arranged in the shell, a connecting shaft is connected in the driving mechanism in a meshed manner, the extension end of the connecting shaft extends to the outside of the shell in a nested manner, and a bearing is arranged in the shell and is connected to the outer end of the connecting shaft in a nested manner. According to the DD motor for the high space utilization type washing machine, the driving mechanism is arranged in the shell, the connecting shaft is meshed with the driving mechanism, the bearings are arranged between the two ends of the connecting shaft and the interior of the shell, the bearings are located in the shell, the driving mechanism is clamped between the two bearings, the size of the DD motor is reduced, and therefore space utilization is improved; the supporting plate is arranged on the side of the bearing and the side of the driving mechanism, the bearing and the driving mechanism can be supported through the supporting plate, the supporting plate is designed in an inclined mode, and the stability between the bearing and the driving mechanism can be better improved.

Description

Technical Field

[0001] The utility model relates to the technical field of DD motors, in particular to a DD motor for a high-space-utilization washing machine. Background Art

[0002] DD motor is also called direct drive motor or DD direct drive motor. The large torque of DD motor enables it to be directly connected to the motion device, eliminating the connection mechanisms such as reducer, gear box, pulley, etc. In drum washing machines, DD motor is usually used to control the rotation of the inner drum. However, the DD motor in the existing washing machine still has some defects and deficiencies that need to be improved:

[0003] For example, the drum washing machine with application number CN202020794793.X includes: an outer barrel; a bearing seat, the bearing seat is located at the outer bottom of the outer barrel, and before the outer barrel is molded, the bearing seat is placed in advance in the mold of the outer bottom of the outer barrel, and the bearing seat is connected to the outer bottom of the outer barrel by injection molding, and the outer barrel and the bearing seat are connected to each other by injection molding to reduce the error caused by multiple matching. On the bearing seat, the end opposite to the outer bottom of the outer barrel is provided with 4 positioning holes, and the installation accuracy can be ensured by the positioning holes; a DD direct-drive motor, the DD direct-drive motor is positioned through the positioning holes, and the stator of the DD direct-drive motor is connected to the bearing seat, and the DD direct-drive motor is positioned through the positioning holes, and its stator is connected to the bearing seat, and the bearing seat and the outer barrel are integrally injection molded, reducing the error caused by multiple matching, and its accuracy is accurate. This patent will not cause eccentricity during operation, which is beneficial to the balance system of the whole machine, and the accuracy is accurate, avoiding the error caused by radial and axial runout tolerances, and will not produce abnormal sound and noise when rotating at high speed, which improves user experience and brand strength.

[0004] Most of the DD motors in the above documents are installed outside the rear bottom of the outer drum. To ensure the normal rotation of the inner drum, the part of the inner drum shaft located in the outer drum needs to be supported by two large and small bearings, and the bearings are pressed into the bearing support seat of the outer drum through tooling. The total thickness of the rear bottom of the outer drum plus the motor is very large, resulting in the front and rear dimensions of the drum washing machine being too large, which is not conducive to the effective use of space and has certain limitations.

[0005] Therefore, we proposed a DD motor for a high-space-utilization washing machine to solve the above-mentioned problems. Utility Model Content

[0006] The utility model aims to provide a DD motor for a washing machine with high space utilization, so as to solve the problem proposed in the above background technology that the bearing is pressed into the bearing support seat of the outer drum by tooling, which is not conducive to the effective utilization of space and has certain limitations.

[0007] To achieve the above object, the utility model provides the following technical solution: A DD motor for a high-space-utilization washing machine comprises a housing, a driving mechanism is arranged inside the housing, a connecting shaft is meshedly connected inside the driving mechanism, and an extended end of the connecting shaft is nested and extended to the outside of the housing;

[0008] A bearing, wherein the bearing is arranged inside the housing, the bearing is nested and connected to the outer end of the connecting shaft, and a ball is arranged on the inner side of the bearing;

[0009] The fixing seat is limitedly clamped on the outer side of the bearing, a sliding groove is provided inside the fixing seat, and a locking groove is provided inside the sliding groove.

[0010] Furthermore, two groups of bearings are provided at the upper and lower ends of the driving mechanism, and the inner side of the bearing is in contact with the outer side of the driving mechanism.

[0011] Furthermore, a support plate is fixedly connected between the side of the bearing and the side of the driving mechanism, and a reinforcing plate is fixedly connected to the inner side of the support plate, and the inner side of the reinforcing plate is in contact with the outer side of the driving mechanism.

[0012] Furthermore, the support plate is designed to be inclined, and the reinforcing plate is triangular in front view.

[0013] Furthermore, the outer side of the fixing seat is fixedly connected to a limiting ring, and the inner side of the limiting ring is provided with a limiting groove, and the limiting groove is located directly above, and the length of the limiting groove is greater than the length of the sliding groove.

[0014] Furthermore, a threaded body is provided on the outer side of the non-axial end of the connecting shaft, and an internal threaded ring is threadedly connected to the outer side of the threaded body, and a clamping block is fixedly connected to the lower end of the internal threaded ring.

[0015] Furthermore, the engaging block is "L"-shaped when viewed from the front, and the lower end of the engaging block is nested and connected inside the engaging groove.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The driving mechanism is arranged inside the housing, and the connecting shaft is meshed with the driving mechanism. Bearings are arranged between the two ends of the connecting shaft and the inside of the housing, so that the bearings are located inside the housing, and the driving mechanism is clamped between the two sets of bearings, which reduces the volume of the DD motor and improves the utilization of space;

[0018] 2. A support plate is provided on the side of the bearing and the driving mechanism, through which the bearing and the driving mechanism can be supported, and the inclined design of the support plate can better improve the stability between the bearing and the driving mechanism;

[0019] 3. A reinforcement plate is fixedly designed between the inner side of the support plate and the outer side of the driving mechanism. The reinforcement plate and the support plate cooperate with each other to better reinforce the bearing and the driving mechanism and improve the stability of the equipment during operation;

[0020] 4. The internal thread ring can be connected to the connecting shaft through the threaded body on one side of the connecting shaft end, and drive the clamping block to be nested and docked into the inside of the clamping groove through the slide groove. At this time, the internal thread ring and the fixing seat are clamped, and the non-axial end of the connecting shaft does not need to have a long connection part, which reduces the space occupied by the connecting shaft, thereby reducing the volume and space occupied by the DD motor;

[0021] 5. When the engaging block rotates, it will slide along the limiting groove on the limiting ring. The limiting groove will limit the engaging block, and the movement and docking of the engaging block will be more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the front cross-sectional structure of the chute of the utility model;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the support plate of the utility model;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the internal thread ring of the utility model;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the limiting ring of the utility model;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the threaded body of the utility model.

[0028] In the figure: 1. housing; 2. driving mechanism; 3. support plate; 4. reinforcing plate; 5. bearing; 6. ball; 7. connecting shaft; 8. fixing seat; 9. threaded body; 10. internal thread ring; 11. limiting ring; 12. slide groove; 13. engaging groove; 14. engaging block; 15. limiting groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Embodiment 1: Figure 1 and Figure 3 The technical solution shown in the figure, the utility model provides the following technical solution: a DD motor for a high space utilization washing machine, a support plate 3 is disclosed, and the support plate 3 and the reinforcing plate 4 cooperate with each other to improve the stability of the equipment during operation:

[0031] A housing 1, wherein a driving mechanism 2 is disposed inside the housing 1, and a connecting shaft 7 is meshedly connected inside the driving mechanism 2, and an extended end of the connecting shaft 7 is nested and extended to the outside of the housing 1;

[0032] A support plate 3 is provided on the side of the bearing 5 and the driving mechanism 2, through which the bearing 5 and the driving mechanism 2 can be supported, and the support plate 3 is inclined to better improve the stability between the bearing 5 and the driving mechanism 2. A reinforcing plate 4 is fixedly designed between the inner side of the support plate 3 and the outer side of the driving mechanism 2, and the reinforcing plate 4 and the support plate 3 cooperate with each other, which can better reinforce the bearing 5 and the driving mechanism 2 and improve the stability of the equipment during operation.

[0033] Embodiment 2: Figure 1 The technical solution shown in the figure, the utility model provides the following technical solution: a DD motor for a high space utilization washing machine, discloses a bearing 5, the bearing 5 is arranged inside the housing 1, and the volume of the DD motor is reduced:

[0034] The bearing 5 is arranged inside the housing 1, and the bearing 5 is nested and connected to the outer end of the connecting shaft 7, and a ball 6 is arranged on the inner side of the bearing 5;

[0035] Two groups of bearings 5 ​​are arranged on the upper and lower ends of the driving mechanism 2, and the inner side of the bearing 5 is in contact with the outer side of the driving mechanism 2; a support plate 3 is fixedly connected between the side of the bearing 5 and the side of the driving mechanism 2, and a reinforcing plate 4 is fixedly connected to the inner side of the support plate 3, and the inner side of the reinforcing plate 4 is in contact with the outer side of the driving mechanism 2, the support plate 3 is designed to be inclined, and the reinforcing plate 4 is triangular when viewed from the front.

[0036] The driving mechanism 2 is arranged inside the shell 1, and the connecting shaft 7 is meshed with the driving mechanism 2. Bearings 5 ​​are arranged between the two ends of the connecting shaft 7 and the inside of the shell 1, so that the bearings 5 ​​are located inside the shell 1, and the driving mechanism 2 is clamped between the two sets of bearings 5, thereby reducing the volume of the DD motor and improving space utilization.

[0037] Embodiment 3: Figure 2 , Figure 4 , Figure 5 and Figure 6 The technical solution shown in the figure, the utility model provides the following technical solution: a DD motor for a high space utilization washing machine, discloses an internal thread ring 10, through which the connecting shaft 7 can be axially limited:

[0038] A fixed seat 8, the fixed seat 8 is limitedly clamped on the outer side of the bearing 5, and a slide groove 12 is opened inside the fixed seat 8, and a clamping groove 13 is opened inside the slide groove 12;

[0039] A limiting ring 11 is fixedly connected to the outer side of the fixing seat 8, and a limiting groove 15 is provided on the inner side of the limiting ring 11, and the limiting groove 15 is located directly above it. At the same time, the length of the limiting groove 15 is greater than the length of the slide groove 12. A threaded body 9 is provided on the outer side of the non-axial end of the connecting shaft 7, and an internal threaded ring 10 is threadedly connected to the outer side of the threaded body 9, and a clamping block 14 is fixedly connected to the lower end of the internal threaded ring 10. The clamping block 14 is "L"-shaped when viewed from the front, and the lower end of the clamping block 14 is nested and connected to the inside of the clamping groove 13.

[0040] The internal threaded ring 10 can be threadedly connected to the connecting shaft 7 through the threaded body 9 on one side of the axial end of the connecting shaft 7. When the locking block 14 rotates, it will slide along the limiting groove 15 opened on the limiting ring 11. The limiting groove 15 will limit the locking block 14. The movement and docking of the locking block 14 is more stable, and the locking block 14 is driven to be nested and docked to the inside of the locking groove 13 through the slide groove 12. At this time, the internal threaded ring 10 is locked with the fixed seat 8, and the non-axial end of the connecting shaft 7 does not need to have a longer connecting part, which reduces the space occupied by the connecting shaft 7, thereby reducing the volume and occupied space of the DD motor.

[0041] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A DD motor for a high-space-utilization washing machine, comprising a housing (1), a driving mechanism (2) being arranged inside the housing (1), a connecting shaft (7) being meshedly connected inside the driving mechanism (2), and an extended end of the connecting shaft (7) being nested and extended to the outside of the housing (1); Features: Also includes: A bearing (5), wherein the bearing (5) is arranged inside the housing (1), and the bearing (5) is nested and connected to the outer end of the connecting shaft (7), and a ball (6) is arranged on the inner side of the bearing (5); A fixed seat (8) is limitedly engaged with the outer side of the bearing (5), a slide groove (12) is provided inside the fixed seat (8), and a locking groove (13) is provided inside the slide groove (12).

2. The DD motor for a high space utilization washing machine according to claim 1, characterized in that: Two groups of bearings (5) are provided at the upper and lower ends of the driving mechanism (2), and the inner side of the bearing (5) is in contact with the outer side of the driving mechanism (2).

3. The DD motor for a high space utilization washing machine according to claim 1, characterized in that: A support plate (3) is fixedly connected between the side of the bearing (5) and the side of the drive mechanism (2), and a reinforcing plate (4) is fixedly connected to the inner side of the support plate (3), and the inner side of the reinforcing plate (4) is in contact with the outer side of the drive mechanism (2).

4. The DD motor for a high space utilization washing machine according to claim 3, characterized in that: The support plate (3) is designed to be inclined, and the reinforcement plate (4) is triangular in shape when viewed from the front.

5. The DD motor for a high space utilization washing machine according to claim 1, characterized in that: The outer side of the fixing seat (8) is fixedly connected to a limiting ring (11), and a limiting groove (15) is provided on the inner side of the limiting ring (11), and the limiting groove (15) is located directly above the fixing seat (8), and the length of the limiting groove (15) is greater than the length of the sliding groove (12).

6. The DD motor for a high space utilization washing machine according to claim 1, characterized in that: A threaded body (9) is provided on the outside of the non-axial end of the connecting shaft (7), and an internal threaded ring (10) is threadedly connected to the outside of the threaded body (9), and a locking block (14) is fixedly connected to the lower end of the internal threaded ring (10).

7. The DD motor for a high space utilization washing machine according to claim 6, characterized in that: The engaging block (14) is in an "L" shape when viewed from the front, and the lower end of the engaging block (14) is nested and connected inside the engaging groove (13).

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