Stator assembly of motor for household electrical appliance

Abstract

The stator assembly comprises an iron core, fixed teeth are arranged on the iron core, an insulating frame is installed on the fixed teeth, a stator winding is wound on the insulating frame, the insulating frame is provided with an outer ring attached to the inner circumference of the iron core, a plurality of protruding blocks are distributed on the outer ring at intervals, and the protruding blocks are arranged on the outer ring. A plurality of pressing plates are installed on the protruding blocks, wire holes for leading-out wires of the stator winding to penetrate through are formed between the protruding blocks and the pressing plates, and the pressing plates abut against and fix the leading-out wires through the protruding blocks. An insulating frame is installed on a fixed tooth, an iron core and a stator winding are separated through the insulating frame so as to prevent the iron core from being electrified, a protruding block and a pressing plate are arranged on an outer ring of the insulating frame, the pressing plate is detachably installed on the protruding block, and when a leading-out wire of the stator winding penetrates through a wire hole, the pressing plate can abut against the protruding block to limit and fix the leading-out wire. Therefore, safety accidents caused by up-and-down movement and abrasion of the outgoing line are avoided, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a stator assembly of a motor for household appliances. Background Art

[0002] The main function of the motor is to generate driving torque, thereby providing power for electrical appliances or various machines. The motor usually includes a stator assembly and a rotor assembly. The stator assembly consists of a stator core and a stator winding fixed on the stator core. The stator winding is generally wound with copper wire, and the stator core is generally made of laminated silicon steel sheets.

[0003] Before winding, an insulating frame needs to be installed on the stator core to separate the stator core and the stator winding to ensure that the stator core will not be electrified. However, the existing insulating frame generally only plays an insulating isolation role, and does not limit and fix the lead wires of the stator winding. In addition, the motor will vibrate when in use, which can easily cause the lead wires to move up and down and cause wear, thereby causing a short circuit. This not only affects the service life of the motor, but also poses a serious safety hazard. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a stator assembly for a motor for household appliances.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A stator assembly of a motor for a household appliance comprises an iron core, the iron core is provided with a plurality of stator teeth extending inwardly, an insulating frame is mounted on the stator teeth, a stator winding is wound on the insulating frame, the insulating frame is provided with an outer ring attached to the inner circumference of the iron core, a plurality of protrusions are spaced apart on the outer ring, a plurality of pressing plates are mounted on the protrusions, wire holes for lead wires of the stator winding to pass through are formed between the protrusions and the pressing plates, and the lead wires are fixed by the pressing plates by pressing against the protrusions.

[0007] Preferably, the insulating frame includes an insulating frame 1, an insulating frame 2, a side plate, and a butt tooth. The insulating frame 1 and the insulating frame 2 are arranged opposite to each other at two ends of the fixed tooth and extend close to each other. The side plate and the butt tooth are arranged in a close fit on the fixed tooth. A cavity for accommodating the stator winding is formed between the outer ring, the side plate, and the butt tooth.

[0008] Preferably, the protrusions are distributed between two adjacent fixed teeth, and the protrusions extend inwardly and separate the cavities.

[0009] Preferably, the cross-sectional area of ​​the protrusion is gradually reduced from the outside to the inside.

[0010] Preferably, the protrusion is provided with a through hole and relatively distributed plug holes, the pressure plate is provided with a connecting rod corresponding to the position of the through hole and a side rod corresponding to the position of the plug hole, and a wire hole is formed between the connecting rod and the side rod.

[0011] Preferably, a limiting column is provided on the connecting rod, and the limiting column passes through the through hole and abuts against the protrusion.

[0012] Preferably, the lead wires are connected to each other via a connecting sleeve, and the lead wires are connected to an external connecting wire via the connecting sleeve.

[0013] Preferably, the abutting tooth is provided with a convex ring extending inwardly, and the convex ring is fitted on the outer periphery of the fixed tooth.

[0014] Preferably, the insulating frame 1 is provided with a plurality of convex teeth, and the insulating frame 2 is provided with a slot corresponding to the position of the convex teeth, and the convex teeth are inserted into the slot.

[0015] The beneficial effects of the utility model are:

[0016] 1. An insulating frame is installed on the stator teeth to separate the iron core and the stator winding through the insulating frame to prevent the iron core from being charged, and a convex block and a pressing plate are arranged on the outer ring of the insulating frame. The pressing plate can be detachably installed on the convex block. When the lead wire of the stator winding passes through the wire hole, the pressing plate can press the lead wire against the convex block to limit and fix the lead wire, thereby avoiding safety accidents caused by the up and down movement and wear of the lead wire, and extending the service life of the motor;

[0017] 2. The lead wire is fixed by cooperating with the protrusion and the pressure plate, which also avoids the problem of the stator winding being easily entangled with the lead wire during winding, thereby improving the reliability and efficiency of winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is an explosion diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the insulation frame of the utility model;

[0021] Figure 4 for Figure 3 The enlarged schematic diagram of point A in the middle;

[0022] Figure 5 It is a schematic diagram of the cooperation between the convex block and the pressure plate of the utility model;

[0023] Figure 6 It is a cross-sectional schematic diagram of the utility model;

[0024] Figure 7 for Figure 6 The enlarged schematic diagram of point B in the middle;

[0025] Figure 8 It is a front view schematic diagram of the utility model;

[0026] Fig. 9 for Figure 8 Enlarged schematic diagram of point C in the middle.

[0027] In the figure: iron core 1, stator tooth 11, stator winding 2, lead wire 21, connecting sleeve 22, external connecting wire 3, insulating frame 4, insulating frame 1 41, convex tooth 411, insulating frame 2 42, slot 421, outer ring 43, side plate 44, convex strip 441, wire slot 442, tooth 45, convex ring 451, cavity 46, protrusion 5, through hole 51, plug hole 52, pressure plate 6, connecting rod 61, side rod 62, limit column 63, wire hole 64. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0029] In the description of this specification, the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0030] like Figures 1 to 9 As shown, a stator assembly of a motor for a household appliance includes an iron core 1, which is formed by stacking a plurality of punching sheets. The iron core 1 is provided with a plurality of stator teeth 11 extending inwardly, and the stator teeth 11 are evenly distributed on the inner circumference of the iron core 1 in the circumferential direction. An insulating frame 4 is installed on the stator teeth 11, and a stator winding 2 is wound on the insulating frame 4. The stator winding 2 is wound by enameled wire. The iron core 1 and the stator winding 2 are separated by the insulating frame 4 to prevent the iron core 1 from being charged due to contact with the stator winding 2.

[0031] The insulating frame 4 includes an insulating frame 1 41, an insulating frame 2 42, a side plate 44, and abutting teeth 45. The insulating frame 1 41 and the insulating frame 2 42 are arranged at the two ends of the fixed teeth 11 and extend close to each other. The insulating frame 1 41 is provided with a plurality of convex teeth 411, and the insulating frame 2 42 is provided with a card slot 421 corresponding to the position of the convex teeth 411. The convex teeth 411 are inserted into the card slot 421 to fix the insulating frame 1 41 and the insulating frame 2 42 to each other. The insulating frame 4 is formed by relatively installing and fixing the insulating frame 1 41 and the insulating frame 2 42. The insulating frame 4 is attached to the outer side of the fixed teeth 11 during the inward movement of the insulating frame 1 41 and the insulating frame 2 42. When the stator winding 2 is wound on the insulating frame 4, the stator winding 2 is prevented from contacting with the iron core 1 and the fixed teeth 11 (refer to Figure 6 , Figure 7 As shown), causing safety issues such as the core 1 being charged

[0032] Further, refer to Figure 2 , Figure 6 , Figure 7 As shown, the abutting tooth 45 is provided with a convex ring 451 extending inwardly, and the convex ring 451 is arranged in close contact with the outer periphery of the fixed tooth 11. The convex ring 451 can make the insulating frame 4 more stably fixed on the fixed tooth 11, thereby improving the reliability of the installation of the insulating frame 4.

[0033] The insulating frame 4 is provided with an outer ring 43 which is attached to the inner circumference of the iron core 1. The side plate 44 and the abutment tooth 45 are attached to the stator tooth 11. A cavity 46 for accommodating the stator winding 2 is formed between the outer ring 43, the side plate 44 and the abutment tooth 45. The stator winding 2 is wound on the outer circumference of the stator tooth 11. In fact, the stator winding 2 is wound on the insulating frame 4 between the outer ring 43 and the abutment tooth 45.

[0034] The side plate 44 is provided with a plurality of convex strips 441, and wire grooves 442 are formed between the convex strips 441. When the first layer of enameled wire of the stator winding 2 is wound on the side plate 44, the first layer of enameled wire is restricted by the setting of the wire grooves 442 to prevent the first layer of enameled wire from slipping during the winding process and getting entangled with the subsequent enameled wire, so that the winding of the stator winding 2 can be smoother and smoother.

[0035] refer to Figures 4 to 9As shown, a plurality of protrusions 5 are spaced apart on the outer ring 43, and the protrusions 5 are distributed between two adjacent fixed teeth 11. A plurality of pressing plates 6 are mounted on the protrusions 5, and the pressing plates 6 correspond to the protrusions 5 one by one and are detachably mounted on the protrusions 5. A wire hole 64 for the lead wire 21 of the stator winding 2 to pass through is formed between the protrusions 5 and the pressing plates 6. When the lead wire 21 of the stator winding 2 passes through the wire hole 64, the pressing plate 6 presses and fixes the lead wire 21 through the protrusions 5, and then the lead wire 21 can be pressed against the protrusions 5 through the pressing plate 6 to limit and fix the lead wire 21, thereby avoiding the up and down movement and wear of the lead wire 21 due to the vibration of the motor during operation, thereby extending the service life of the motor.

[0036] At the same time, by fixing the lead wire 21, it is also possible to avoid the problem that the stator winding 2 is easily entangled with the lead wire 21 during winding, thereby improving the reliability and efficiency of the winding.

[0037] The cross-sectional area of ​​the protrusion 5 is gradually reduced from the outside to the inside. The protrusion 5 extends inward and separates the cavity 46. The protrusion 5 extending inward plays a separating role when the stator winding 2 is wound, that is, it provides guidance when the enameled wire of the stator winding 2 is wound into the cavity 46, thereby improving the efficiency and reliability of the winding of the stator winding 2.

[0038] The block 5 is provided with a through hole 51 and relatively distributed plug-in holes 52. The pressing plate 6 is provided with a connecting rod 61 corresponding to the position of the through hole 51 and a side rod 62 corresponding to the position of the plug-in hole 52. The connecting rod 61 and the side rod 62 are respectively plugged into the through hole 51 and the plug-in hole 52 to achieve the installation of the pressing plate 6 on the block 5. A wire hole 64 is formed between the connecting rod 61 and the side rod 62. The lead wires 21 are connected through a connecting sleeve 22. The connecting sleeve 22 passes through the wire hole 64 and is fixed by cooperating with the pressing plate 6 and the block 5, thereby limiting and fixing the lead wire 21.

[0039] The lead-out wire 21 is connected to the external connection wire 3 through the connection sleeve 22, that is, the external connection wire 3 is also fixed between the pressing plate 6 and the protrusion 5 through the connection sleeve 22, so that the connection of the external connection wire 3 is more stable and reliable.

[0040] Furthermore, a limiting column 63 is provided on the connecting rod 61, and the limiting column 63 can be an elastic limiting column 63. The connecting rod 61 and the limiting column 63 are integrally formed, and the diameter of the through hole 51 is larger than the diameter of the connecting rod 61. When the connecting rod 61 passes through the through hole 51, the limiting column 63 is also squeezed through the through hole 51, that is, the limiting column 63 can pass through the through hole 51 and abut on the protrusion 5. The pressure plate 6 and the limiting column 63 are distributed on both sides of the protrusion 5. When the lead wire 21 passes through the wire hole 64, the pressure plate 6 always maintains a tendency to press and fix the lead wire 21 under the reverse elastic force of the limiting column 63.

[0041] The limiting column 63 can also be installed on the connecting rod 61 by plugging and fixing. When the limiting column 63 is installed on the connecting rod 61, one end of the limiting column 63 presses against the protrusion 5 so that the pressure plate 6 can maintain the tendency of pressing and fixing the lead-out wire 21 through the protrusion 5.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stator assembly of a motor for a household appliance, comprising an iron core (1), the iron core (1) being provided with a plurality of stator teeth (11) extending inwardly, an insulating frame (4) being mounted on the stator teeth (11), a stator winding (2) being wound on the insulating frame (4), characterized in that: The insulating frame (4) is provided with an outer ring (43) which is fitted on the inner circumference of the iron core (1); a plurality of protrusions (5) are arranged at intervals on the outer ring (43); a plurality of pressing plates (6) are mounted on the protrusions (5); wire holes (64) for lead wires (21) of the stator winding (2) to pass through are formed between the protrusions (5) and the pressing plates (6); the lead wires (21) are fixed by the pressing plates (6) against the protrusions (5).

2. The stator assembly of a motor for household appliances as claimed in claim 1, characterized in that: The insulating frame (4) comprises an insulating frame 1 (41), an insulating frame 2 (42), a side plate (44), and a butt tooth (45); the insulating frame 1 (41) and the insulating frame 2 (42) are arranged oppositely at two ends of the fixed tooth (11) and extend close to each other; the side plate (44) and the butt tooth (45) are arranged in close contact with the fixed tooth (11); and a cavity (46) for accommodating the stator winding (2) is formed between the outer ring (43), the side plate (44), and the butt tooth (45).

3. A stator assembly for a motor for household appliances as claimed in claim 2, characterized in that: The convex block (5) is distributed between two adjacent fixed teeth (11), and the convex block (5) extends inwardly and separates the cavity (46).

4. The stator assembly of a motor for household appliances as claimed in claim 2, characterized in that: The cross-sectional area of ​​the protrusion (5) is gradually reduced from the outside to the inside.

5. The stator assembly of a motor for a household appliance as claimed in claim 1, characterized in that: The convex block (5) is provided with a through hole (51) and relatively distributed plug holes (52); the pressing plate (6) is provided with a connecting rod (61) corresponding to the position of the through hole (51) and a side rod (62) corresponding to the position of the plug hole (52); a wire hole (64) is formed between the connecting rod (61) and the side rod (62).

6. A stator assembly for a motor for a household appliance as claimed in claim 5, characterized in that: A limiting column (63) is provided on the connecting rod (61), and the limiting column (63) passes through the through hole (51) and abuts against the protrusion (5).

7. The stator assembly of a motor for a household appliance as claimed in claim 1, characterized in that: The lead-out wires (21) are connected to each other via a connecting sleeve (22), and the lead-out wires (21) are connected to an external connecting wire (3) via the connecting sleeve (22).

8. The stator assembly of a motor for a household appliance as claimed in claim 2, characterized in that: The abutting tooth (45) is provided with a convex ring (451) extending inwards, and the convex ring (451) is arranged in close contact with the outer periphery of the fixed tooth (11).

9. The stator assembly of a motor for a household appliance as claimed in claim 2, characterized in that: The insulating frame 1 (41) is provided with a plurality of protruding teeth (411), and the insulating frame 2 (42) is provided with a clamping groove (421) corresponding to the position of the protruding teeth (411), and the protruding teeth (411) are inserted into the clamping groove (421).

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