CN220022433U - Rotor - Google Patents

Abstract

The utility model discloses a rotor, which belongs to the field of motor equipment and comprises a rotating shaft, an iron core, a permanent magnet and a protection assembly, wherein the permanent magnet is arranged around the iron core, an installation groove for connecting the permanent magnet is formed in the iron core, the rotating shaft is connected with the iron core, and the rotating shaft penetrates through the iron core and is connected with the iron core in a interference fit mode; the protection component wraps the permanent magnet and the whole iron core, the protection component comprises a shell and end covers positioned at two ends of the shell, the end covers are detachably connected with the shell, and the rotating shaft penetrates through the end covers. The rotor is protected through the protection component, the protection component comprises the shell and the end covers positioned at two ends of the shell, the end covers are rotated, and the first inserting rod and the second inserting rod on the end plates are respectively inserted into the corresponding first inserting groove and the corresponding second inserting groove, so that the joint of the end covers and the shell is sealed, and meanwhile, the joint of the end covers and the rotating shaft is sealed, the protection assembly frame is convenient to detach and install, and the rotor core and the permanent magnet are convenient to overhaul and maintain.

Description

Rotor

Technical Field

The utility model relates to the field of motor equipment, in particular to a rotor.

Background

The permanent magnet brushless direct current motor has the advantages of high power density, high efficiency, high reliability and the like, and is widely applied to driving components of household appliances, electronic water pumps in dish washing machines and other products, in order to improve the reliability of the pumps, permanent magnet rotors in the water electronic pumps are often soaked in liquid, so that the motor products are required to meet strict waterproof requirements.

The silicon steel sheet in the rotor is easy to rust after being contacted with the permanent magnet material and water, equipment is damaged, safety accidents such as combustion and explosion are more likely to occur, the existing underwater motor is generally used for achieving the purposes of water resistance and corrosion resistance, paint is dipped on the surface of a rotor core to form a protective paint film, however, the cost of the protective paint film of the structure is higher, and if impurities enter a rotor gap, the protective paint film can be damaged to cause potential safety hazards to influence the motor and the performance of an electronic water pump, so that the rotor is provided.

Disclosure of Invention

The utility model aims at the defects in the prior art, and provides the rotor which has excellent sealing performance and waterproof performance through the protection component. In order to solve the technical problems, the utility model is solved by the following technical scheme.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the rotor comprises a rotating shaft, an iron core, a permanent magnet and a protection assembly, wherein the permanent magnet is arranged around the iron core, an installation groove for connecting the permanent magnet is formed in the iron core, the rotating shaft is connected with the iron core, and the rotating shaft penetrates through the iron core and is connected with the iron core in a fit manner; the protection component wraps the permanent magnet and the whole iron core, the protection component comprises a shell and end covers positioned at two ends of the shell, the end covers are detachably connected with the shell, and the rotating shaft penetrates through the end covers.

Preferably, the rotating shaft comprises a first shaft section and a second shaft section connected with two ends of the first shaft section, the first shaft section and the second shaft section are fixedly connected, the diameter of the second shaft section is smaller than that of the first shaft section, and the first shaft section is connected with the iron core.

Preferably, the shell and the end cover are both circular, a first connecting sealing element is arranged between the outer ring of the end cover and the shell, the end cover and the shell are connected together by the first connecting sealing element and are sealed at the joint, a second connecting sealing element is arranged between the inner ring of the end cover and the rotating shaft, the second connecting sealing element is used for sealing the joint between the end cover and the rotating shaft, and the second connecting sealing element corresponds to the joint of the first section of the shaft and the second section of the shaft.

Preferably, the end of the shell is provided with a conical surface and a side lug, the conical surface is provided with a first sealing ring, the conical surface is positioned on the inner side of the shell, the side lug is positioned on the outer white surface of the shell and is fixed with the outer white surface of the shell, the first connecting sealing member comprises a ring body and a first inserting rod, the ring body is fixed with the end cover, the ring body is positioned at the edge of the end cover and is fixedly connected with the end cover, the inner side of the ring body is provided with a conical section and a vertical section, the conical section corresponds to the conical surface of the shell, the lower surface of the vertical section is fixed with the first inserting rod, a space is reserved between the first inserting rod and the lower surface of the vertical section to form an inserting end, the first sealing ring is arranged on the conical surface of the shell, a groove body for installing the first sealing ring is arranged on the conical surface of the shell, a first slot matched with the first inserting rod is arranged on the side lug, and the first inserting rod is used for fixing the end cover and the shell through being inserted into the first slot, and sealing the connecting part.

Preferably, the insertion end of the first inserting rod is provided with an upper inclined plane for tightly fitting the ring body with the shell, the length of the first slot is longer than that of the insertion end of the first inserting rod, the upper inclined plane is tightly fitted with the first slot along with the insertion of the first inserting rod,

preferably, the first inserted link insertion end has an outer inclined surface for the fastening of first inserted link and side ear, and the cooperation of upper inclined surface and outer inclined surface makes first inserted link more fastened with side ear to further stabilize the sealing department of end cover and casing.

Preferably, the upper inclined surface and the outer inclined surface of the second section of the shaft are respectively fixed with a rubber pad matched with the upper inclined surface and the outer inclined surface of the second section of the shaft, the rubber pads are used for being tightly attached to the slots, the rubber pads are used for increasing the friction force between the first inserted link and the side lugs, the tightness is stabilized further, the rough surface of the bearing can be further increased on the inner wall of the first slot, and the friction is further increased, so that the first inserted link is connected with the side lugs stably.

Preferably, an excessive cone is arranged between the first section of the shaft and the second section of the shaft, and two ends of the excessive cone are respectively fixed with the first section of the shaft and the second section of the shaft, so that the rotating shaft is not blocked when penetrating through the iron core through the arrangement.

Preferably, the second connecting sealing member comprises a second sealing ring, the second sealing ring is sleeved on the transition cone, the inner ring of the end cover is matched with the transition cone, when the first inserted link pulls the ring body downwards, the end cover moves downwards, the inner end of the end cover is further enabled to extrude the second sealing ring, and the joint of the end cover and the rotating shaft is sealed and waterproof.

Preferably, there is annular terminal surface between transition cone and the first section of axle, and this annular terminal surface is the terminal surface of the first section of axle, and second connection sealing member still includes the second inserted bar, and the second inserted bar is fixed with the end cover, has seted up the second slot on the annular terminal surface of the first section of axle, and the second inserted bar can set up the same with first inserted bar, and the second slot can set up the same with first slot, and the second slot is used for accepting the slot section of second inserted bar, and the cooperation of second inserted bar and second slot has increased the stability of end cover, has also increased the sealed waterproof nature of end cover and pivot.

Compared with the prior art, the utility model has the following beneficial effects: according to the rotor, the rotor is protected through the protection component, the protection component comprises the shell and the end covers positioned at the two ends of the shell, the end covers are rotated, and the first inserting rod and the second inserting rod on the end plates are respectively inserted into the corresponding first inserting groove and the corresponding second inserting groove, so that the joint of the end covers and the shell is sealed, and meanwhile, the joint of the end covers and the rotating shaft is sealed, the protection assembly frame is convenient to detach and install, and the rotor core and the permanent magnet are convenient to overhaul and maintain.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of the overall structure of a rotor according to the present utility model.

Fig. 2 is an enlarged schematic view of the rotor of the present utility model at a of fig. 1.

Fig. 3 is a schematic view of an end cap of a rotor of the present utility model.

Fig. 4 is a schematic cross-sectional view of an end cap of a rotor of the present utility model.

Fig. 5 is an enlarged schematic view of the rotor of the present utility model at B in fig. 4.

Fig. 6 is a schematic view of a housing of the rotor of the present utility model.

Fig. 7 is a schematic view of a rotor shaft according to the present utility model.

Description of the figure: 1. a rotating shaft; 11. a shaft first section; 111. a second slot; 12. a second section of the shaft; 13. a transition cone; 2. an iron core; 3. a permanent magnet; 4. a protective assembly; 41. a housing; 411. a conical surface; 42. an end cap; 43. a first connection seal; 431. a ring body; 432. a first plunger; 44. a second connection seal; 441. a second seal ring; 442. a second plunger; 5. a lateral ear; 51. a first slot; 6. a first seal ring; 7. and a rubber pad.

Detailed Description

The present utility model is described in further detail below with reference to the accompanying drawings.

The following description is presented to enable one of ordinary skill in the art to practice the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. indicate orientations or positions based on the orientation or positional relationship shown in the drawings, which are merely for convenience in describing the present simplified description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus the above terms are not to be construed as limiting the present utility model.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Referring to fig. 1-7, a rotor comprises a rotating shaft 1, an iron core 2, a permanent magnet 3 and a protection component 4, wherein the permanent magnet 3 is arranged around the iron core 2, an installation groove for connecting the permanent magnet 3 is formed in the iron core 2, the rotating shaft 1 is connected with the iron core 2, and the rotating shaft 1 penetrates through the iron core 2 and is connected with the iron core 2 in a interference fit manner; the protection component 4 wraps the permanent magnet 3 and the whole iron core 2, the protection component 4 comprises a shell 41 and end covers 42 positioned at two ends of the shell 41, the end covers 42 are detachably connected with the shell 41, and the rotating shaft 1 penetrates through the end covers 42. The end cover 42, the shell 41 and the rotating shaft 1 are matched to wrap the permanent magnet 3 and the whole iron core 2, so that water inflow is prevented.

The rotating shaft 1 comprises a first shaft section 11 and second shaft sections 12 connected with two ends of the first shaft section 11, the first shaft section 11 and the second shaft section 12 are fixedly connected, the diameter of the second shaft section 12 is smaller than that of the first shaft section 11, and the first shaft section 11 is connected with the iron core 2.

The shell 41 and the end cover 42 are circular, a first connecting sealing piece 43 is arranged between the outer ring of the end cover 42 and the shell 41, the first connecting sealing piece 43 connects the end cover 42 and the shell 41 together and seals the joint, a second connecting sealing piece 44 is arranged between the inner ring of the end cover 42 and the rotating shaft 1, the second connecting sealing piece 44 is used for sealing the joint of the end cover 42 and the rotating shaft 1, and the second connecting sealing piece 44 corresponds to the joint of the first shaft section 11 and the second shaft section 12.

One end of a shell 41 can be sleeved with a first shaft section 11 of a rotating shaft 1 to form a limit, the shell 41 is prevented from shaking when being connected with an end plate, the end part of the shell 41 is provided with a conical surface 411 and a side lug 5, a first sealing ring 6 is designed on the conical surface 411, the conical surface 411 is positioned at the inner side of the shell 41, the side lug 5 is positioned at the outer white surface of the shell 41 and is fixed with the outer white surface of the shell 41, a first connecting sealing piece 43 comprises a ring body 431 and a first inserting rod 432, the ring body 431 is fixed with an end cover 42, the ring body 431 is used for being fixedly connected with the end cover 42, the inner side of the ring body 431 is provided with a conical section and a vertical section, the conical section corresponds to the conical surface of the shell 41, the lower surface of the vertical section is fixed with the first inserting rod 432, a space is reserved between the first inserting rod 432 and the lower surface of the vertical section to form an inserting end, the first sealing ring 6 is arranged on the conical surface 411 of the shell 41, a groove body for installing the first sealing ring 6 is arranged on the conical surface 411 on the shell 41, and the side lug 5 is provided with a first inserting groove 51 matched with the first inserting rod 432, and the first inserting groove 432 is fixedly connected with the end cover 42, and the first inserting groove 432 is fixedly connected with the end cover 41 through the first inserting rod 51, and the end cover 41.

The insertion end of the first insertion rod 432 has an upper inclined surface for tightly fitting the ring body 431 with the housing 41, and the length of the first insertion groove 51 is greater than that of the insertion end of the first insertion rod 432, and along with the insertion of the first insertion rod 432, the upper inclined surface is tightly fitted with the first insertion groove 51, so that a downward pulling force is applied to the ring body 431, so that the tapered end of the ring body 431 contacts with the first sealing ring 6 and is deformed by extrusion, thereby achieving the sealing purpose.

The insertion end of the first insertion rod 432 has an outer inclined surface for fastening the first insertion rod 432 to the side ear 5, and the upper inclined surface cooperates with the outer inclined surface to enable the first insertion rod 432 to be fastened to the side ear 5 more tightly, thereby further stabilizing the sealing position between the end cover 42 and the housing 41.

The upper inclined surface and the outer inclined surface of the second shaft section 12 are both fixedly provided with rubber pads 7 matched with the upper inclined surface and the outer inclined surface of the second shaft section, the rubber pads 7 are used for being tightly attached to the slots, the rubber pads 7 are used for increasing the friction force between the first inserting rods 432 and the side lugs 5, the tightness is stabilized further, the rough surface of the bearing can be further increased on the inner wall of the first slot 51, and the friction is further increased, so that the first inserting rods 432 are stably connected with the side lugs 5.

An excessive cone 13 is arranged between the first shaft section 11 and the second shaft section 12, and two ends of the excessive cone 13 are respectively fixed with the first shaft section 11 and the second shaft section 12, so that the rotating shaft 1 is not blocked when penetrating through the iron core 2.

The second connecting sealing member 44 includes a second sealing ring 441, the second sealing ring 441 is sleeved on the transition cone 13, the inner ring of the end cover 42 is matched with the transition cone 13, when the ring body 431 is pulled downwards by the first inserting rod 432, the end cover 42 moves downwards, so that the inner end of the end cover 42 presses the second sealing ring 441, and the joint of the end cover 42 and the rotating shaft 1 is sealed and waterproof.

The annular end surface is arranged between the transition cone 13 and the first shaft section 11, the annular end surface is the end surface of the first shaft section 11, the second connecting sealing piece 44 further comprises a second inserted rod 442, the second inserted rod 442 is fixed with the end cover 42, a second slot 111 is formed in the annular end surface of the first shaft section 11, the second inserted rod 442 can be arranged in the same way as the first inserted rod 432, the second slot 111 can be arranged in the same way as the first slot 51, the second slot 111 is used for receiving the slot section of the second inserted rod 442, and the second inserted rod 442 and the second slot 111 are matched, so that the stability of the end cover 42 is improved, and the sealing waterproof property between the end cover 42 and the rotating shaft 1 is also improved.

The end cover 42 and the shell 41 support are detachably connected, so that the disassembly and the assembly are convenient, and the rotor core and the permanent magnet are convenient to overhaul and maintain.

When the rotary shaft 1 is used, the iron core 2 is connected with the permanent magnet 3, then the permanent magnet 3 is connected with the rotary shaft 1, then the outer shell is sleeved on the first section 11 of the shaft, and then the two end covers 42 are respectively connected with the shell 41, wherein the end covers are sleeved on the second section 12 of the rotary shaft 1 and axially move along the shaft, the first inserting rod 432 is positioned between the two side lugs 5, and when the first inserting rod corresponds to the first inserting groove 51 in the circumferential direction, the second inserting rod 442 falls on the second inserting groove 111, then the ring body 431 is rotated, the first inserting rod 432 is inserted into the first inserting groove 51, meanwhile, the second inserting rod 442 is inserted into the second inserting groove 111, the ring body 431 and the end cover 42 are pulled towards the shell 41 through the upper inclined surfaces, and the first sealing ring 6 and the second sealing ring 441 are extruded and deformed, so that the joint of the end cover 42 and the shell 41 is sealed, and the joint of the rotary shaft 1 is also sealed. Simple structure, convenient to use, convenient to overhaul and maintain.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the present utility model may be modified or practiced without departing from the principles.

Claims (10)

1. A rotor, characterized in that: comprising the following steps:

an iron core (2);

the rotating shaft (1), the rotating shaft (1) is connected with the iron core (2);

the permanent magnet (3), the permanent magnet (3) surrounds the iron core (2);

the protection assembly (4) wraps the permanent magnet (3) and the whole iron core (2), the protection assembly (4) comprises a shell (41) and end covers (42) arranged at two ends of the shell (41), the end covers (42) are detachably connected with the shell (41), and the rotating shaft (1) penetrates through the end covers (42).

2. A rotor according to claim 1, characterized in that: the rotating shaft (1) comprises a first shaft section (11) and a second shaft section (12) connected with two ends of the first shaft section (11), the diameter of the second shaft section (12) is smaller than that of the first shaft section (11), and the first shaft section (11) is connected with the iron core (2).

3. A rotor according to claim 2, characterized in that: the novel rotary shaft comprises a shell (41) and an end cover (42), wherein the shell (41) and the end cover (42) are both circular, a first connecting sealing piece (43) is arranged between an outer ring of the end cover (42) and the shell (41), a second connecting sealing piece (44) is arranged between an inner ring of the end cover (42) and the rotary shaft (1), and the second connecting sealing piece (44) corresponds to a connecting part of a first shaft section (11) and a second shaft section (12).

4. A rotor according to claim 3, characterized in that: the utility model discloses a casing (41) tip has conical surface (411) and side ear (5), design on conical surface (411) has first sealing washer (6), first connection sealing member (43) are including ring body (431) and first inserted bar (432), ring body (431) are fixed with end cover (42), there are conical section and vertical section ring body (431) inboard, the lower surface and the first inserted bar (432) of vertical section are fixed, on conical surface (411) of first sealing washer (6) set up with casing (41), offer first slot (51) with first inserted bar (432) looks adaptation on side ear (5).

5. A rotor as defined in claim 4, wherein: the insertion end of the first inserting rod (432) is provided with an upper inclined surface and is used for tightly fitting the ring body (431) with the shell (41).

6. A rotor as claimed in claim 5, wherein: the insertion end of the first inserting rod (432) is provided with an outer inclined surface, and the outer inclined surface is used for fastening the first inserting rod (432) and the side lugs (5).

7. A rotor as claimed in claim 6, wherein: rubber pads (7) matched with the upper inclined surface and the outer inclined surface of the second section (12) of the shaft are fixed on the upper inclined surface and the outer inclined surface of the second section of the shaft and are used for being tightly attached to the slots.

8. A rotor according to claim 3, characterized in that: an excessive cone (13) is arranged between the first shaft section (11) and the second shaft section (12), and two ends of the excessive cone (13) are respectively fixed with the first shaft section (11) and the second shaft section (12).

9. A rotor as claimed in claim 8, wherein: the second connecting sealing piece (44) comprises a second sealing ring (441), the second sealing ring (441) is sleeved on the transition cone (13), and the inner ring of the end cover (42) is matched with the transition cone (13).

10. A rotor according to claim 9, wherein: the transition cone (13) and the first section (11) of the shaft are provided with annular end faces, the second connecting sealing piece (44) further comprises a second inserted rod (442), the second inserted rod (442) is fixed with the end cover (42), and the annular end faces of the first section (11) of the shaft are provided with second slots (111).