CN217282589U - Permanent magnet synchronous motor brush and rotary transformer fixing structure - Google Patents

Abstract

The utility model relates to a PMSM brush and rotary transformer fixed knot construct, including rotary transformer stator subassembly, brush ring, mount and motor rear end cap, the mount is cyclic annular, and fixes on the motor rear end cap, rotary transformer stator subassembly fixes the one side at the mount, the brush ring inlays to be established at the opposite side of mount, and with mount interference fit. The utility model discloses a fixed knot constructs can be at PMSM internally mounted brush ring, prevention axle current, and detachable design makes things convenient for the change and the maintenance of later stage brush simultaneously, in addition, still can install simultaneously and become the subassembly soon, the angle is become soon in the adjustment, kills many birds with one stone.

Description

Permanent magnet synchronous motor brush and rotary transformer fixing structure

Technical Field

The utility model relates to a motor accessory technical field, more specifically say, relate to a PMSM brush and become fixed knot soon and construct.

Background

Most of the existing three-phase alternating current synchronous motors do not need the reversing function of a carbon brush, and the three-phase alternating current synchronous motors of various models are not provided with the carbon brush due to factors such as compact internal space structure and the like. Meanwhile, as the electric brush needs to be maintained and replaced regularly, even if the electric brush needs to be installed, no reasonable structure is provided for fixing and installing the electric brush at present.

Although a three-phase ac synchronous motor can be used without brushes, the current technology has disadvantages: the static charge on the motor shaft can not be conducted and grounded, so that shaft current is generated, small arc erosion is generated between the shaft neck and the bearing bush, an oil film is damaged, the temperature of the bearing is increased, and lubricating oil is carbonized and deteriorated. If the shaft current exceeds a certain value, the sliding surfaces of the shaft journals and the bearing bushes of the generator shafts may be damaged, and the bearings may be unusable or have a considerably shortened life.

Disclosure of Invention

In order to solve the technical problem, an object of the utility model is to provide a PMSM brush and change fixed knot construct soon, this structure dismouting maintenance convenience, and be convenient for the angular adjustment who changes soon.

In order to achieve the purpose of the invention, the utility model adopts the following technical scheme:

the utility model provides a PMSM brush and rotary transformer fixed knot construct, includes rotary transformer stator subassembly, brush ring, mount and motor rear end cap, the mount is cyclic annular, and fixes on the motor rear end cap, rotary transformer stator subassembly fixes the one side at the mount, the brush ring inlays to be established at the opposite side of mount, and with mount interference fit.

As a preferable scheme: the inner wall of one side of the fixing frame is provided with a step surface, and the electric brush ring is embedded in the fixing frame and is abutted to the step surface.

As a preferable scheme: and the end face of the other side of the fixing frame is also provided with a threaded hole, and the rotary transformer stator assembly is fixed on the fixing frame through a bolt and a press-mounting elastic sheet.

As a preferable scheme: and a notch for accommodating a wiring terminal of the rotary transformer stator is formed in the end face of the other side of the fixing frame.

As a preferable scheme: the utility model discloses a motor, including mount, motor rear end cover, even interval sets up a plurality of engaging lugs on the outer wall of mount, set up the through-hole of a plurality of rectangular shapes on the engaging lug, wear to establish in the through-hole through the bolt, fasten the mount on the motor rear end cover.

As a preferable scheme: still be equipped with the motor shaft in the motor rear end cover, be provided with the rotary transformer rotor on the motor shaft, and cooperate with the rotary transformer stator subassembly.

As a preferable scheme: the motor shaft is provided with a groove, the inner wall of the rotary transformer rotor is provided with a key, the rotary transformer rotor and the motor shaft are circumferentially limited through the matching of the key and the groove, and the motor shaft is further provided with a compression ring for axially limiting the rotary transformer rotor.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses an adopt the mount, can install annular brush and resolver simultaneously. The brush ring is in interference fit with the fixing frame, the rotary transformer stator is fixed to the fixing frame through bolts and press-fitting elastic pieces, and the fixing frame is installed on the motor shell through the bolts and can rotate to adjust the angle.

The utility model discloses a fixed knot constructs can be at PMSM internally mounted brush ring, prevention axle current, and detachable design makes things convenient for the change and the maintenance of later stage brush simultaneously, in addition, still can install simultaneously and change subassembly, adjustment soon and become the angle, kill many birds with one stone.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1 is a schematic view of the installation structure of the present invention;

FIG. 2 is a schematic sectional view of the installation structure of the present invention;

fig. 3 is a schematic view of the mounting structure of the resolver stator assembly, the brush ring and the fixing frame of one angle of the present invention;

fig. 4 is a schematic view of the mounting structure of the resolver stator assembly, the brush ring and the fixing bracket at another angle of the present invention;

fig. 5 is an exploded view of the components of the resolver stator assembly, the brush ring, the fixing bracket, the resolver rotor, etc. of the present invention;

fig. 6 is a schematic structural view of an angle of the fixing frame of the present invention;

fig. 7 is a schematic structural view of another angle of the fixing frame of the present invention.

The labels in the figures are: 1. a fixed mount; 2. a resolver stator assembly; 3. a motor rear end cover; 4. a motor shaft; 5. a brush ring; 6. a rotary transformer rotor; 61. a key; 7. pressing a ring; 8. connecting lugs; 9. a through hole; 101. a step surface; 102. a recess.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, elements, and/or combinations thereof, unless the context clearly indicates otherwise.

Furthermore, in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The invention will be further explained with reference to the following embodiments and drawings:

fig. 1 to 7 show a permanent magnet synchronous motor brush and resolver fixing structure, which includes a resolver stator assembly 2, a brush ring 5, a fixing frame 1 and a motor rear end cover 3, wherein the fixing frame 1 is annular and fixed on the motor rear end cover 3, the resolver stator assembly 2 is fixed on one side of the fixing frame 1, and the brush ring 5 is embedded on the other side of the fixing frame 1 and is in interference fit with the fixing frame 1.

The inner wall of one side of mount 1 is equipped with step face 101, brush ring 5 inlays to be established in mount 1 and offsets with step face 101. The other side end face of the fixing frame 1 is also provided with a threaded hole 103, and the rotary transformer stator assembly 2 is fixed on the fixing frame 1 through a bolt and a press-mounting elastic sheet. And a notch 102 for accommodating a wiring terminal of the rotary transformer stator is arranged on the other end face of the fixed frame 1.

Even interval sets up a plurality of engaging lugs 8 on the outer wall of mount 1, set up the through-hole 9 of a plurality of rectangular shapes on the engaging lug 8, wear to establish in through-hole 9 through the bolt, fasten mount 1 on motor rear end cover 3.

Still be equipped with motor shaft 4 in the motor rear end cover 3, be provided with on the motor shaft 4 and revolve and become rotor 6, and cooperate with revolving and become stator subassembly 2. The motor shaft 4 is provided with a groove, the inner wall of the rotary transformer rotor 6 is provided with a key 61, the rotary transformer rotor 6 and the motor shaft 4 are circumferentially limited through the matching of the key 61 and the groove, and the motor shaft 4 is further provided with a compression ring 7 for axially limiting the rotary transformer rotor 6.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention, and that any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims (7)

1. The utility model provides a permanent magnet synchronous motor brush and rotary transformer fixed knot construct which characterized in that: including changeing stator subassembly (2), brush ring (5), mount (1) and motor rear end cap (3) soon, mount (1) becomes cyclic annularly, and fixes on motor rear end cap (3), changeing stator subassembly (2) soon and fixing the one side at mount (1), brush ring (5) inlay the opposite side of establishing in mount (1), and with mount (1) interference fit.

2. The permanent magnet synchronous motor brush and rotary transformer fixing structure according to claim 1, characterized in that: the inner wall of one side of the fixing frame (1) is provided with a step surface (101), and the electric brush ring (5) is embedded in the fixing frame (1) and is abutted against the step surface (101).

3. The permanent magnet synchronous motor brush and rotary transformer fixing structure according to claim 1, characterized in that: the other side end face of the fixing frame (1) is also provided with a threaded hole (103), and the rotary transformer stator assembly (2) is fixed on the fixing frame (1) through a bolt and a press-mounting elastic sheet.

4. The permanent magnet synchronous motor brush and rotary transformer fixing structure according to claim 1, characterized in that: and a notch (102) for accommodating a wiring terminal of the rotary transformer stator is arranged on the other end face of the fixed frame (1).

5. The permanent magnet synchronous motor brush and rotary transformer fixing structure according to claim 1, characterized in that: even interval sets up a plurality of engaging lug (8) on the outer wall of mount (1), set up through-hole (9) of a plurality of rectangular shapes on engaging lug (8), wear to establish in through-hole (9) through the bolt, fasten mount (1) on motor rear end cap (3).

6. The permanent magnet synchronous motor brush and rotary transformer fixing structure according to claim 1, characterized in that: still be equipped with motor shaft (4) in motor rear end cover (3), be provided with on motor shaft (4) and revolve and become rotor (6), and cooperate with revolving and become stator subassembly (2).

7. The permanent magnet synchronous motor brush and rotary transformer fixing structure according to claim 6, characterized in that: be equipped with the groove on motor shaft (4), it is equipped with key (61) to become rotor (6) inner wall soon, through the cooperation in key (61) and groove for it is spacing with motor shaft (4) circumference to become rotor (6) soon, still be equipped with on motor shaft (4) and be used for carrying out axial spacing clamping ring (7) to becoming rotor (6) soon.

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