CN210927416U - Compressing device of rotary transformer stator and rotary transformer - Google Patents

Abstract

The utility model discloses a become closing device and ware soon of stator soon, become closing device of stator soon includes: an end cap; the rotary transformer stator pressing plate is arranged on the end cover and is suitable for pressing the rotary transformer stator in the axial direction; the rotating-deformation stator pressing plate is provided with an anti-rotating structure, and the anti-rotating structure is matched with the rotating-deformation stator to limit the rotating-deformation stator to rotate in the circumferential direction. The utility model discloses a become closing device of stator soon through set up rotation-proof structure on becoming the stator clamp plate soon, exerts a radial packing force to the trough rim of becoming the stator soon, and rethread fastener is fixed completely to becoming the stator soon, guarantees to become soon the stability of ware in motor operation in-process, reduces because of the risk that the vibration produced the circumference drunkenness.

Description

Compressing device of rotary transformer stator and rotary transformer

Technical Field

The utility model belongs to the technical field of the ware technique of becoming soon and specifically relates to a become closing device and become ware soon of stator soon.

Background

At present, the rotary transformer stator in the rotary transformer mainly adopts the clamp plate to realize fixing, is equipped with the through-hole on the clamp plate, is equipped with the screw hole on the end cover, can realize compressing tightly rotary transformer stator axial through the fastener, but this kind of structure can only fix rotary transformer stator axial, and the circumference of rotary transformer stator is not locked. Therefore, in the running process of the motor, the rotary variable stator is influenced by vibration and the like, so that the risk of circumferential movement exists, periodic circumferential movement of the rotary variable stator can be caused, and the zero drift of the motor can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, an object of the present invention is to provide a compressing device for a resolver stator, which can fix the resolver stator in the circumferential direction, and reduce circumferential movement of the resolver stator caused by vibration;

another object of the present invention is to provide a rotary transformer, which includes the above-mentioned pressing device.

In order to achieve the above object, the utility model provides a become closing device of stator soon, include: an end cap; the rotary transformer stator pressing plate is arranged on the end cover and is suitable for pressing the rotary transformer stator in the axial direction; the rotating-deformation stator pressing plate is provided with an anti-rotating structure, and the anti-rotating structure is matched with the rotating-deformation stator to limit the rotating-deformation stator to rotate in the circumferential direction.

The utility model discloses a become closing device of stator soon through set up rotation-proof structure on becoming the stator clamp plate soon, is adding a radial power that compresses tightly to the trough rim that becomes the stator soon, and rethread fastener is fixed completely to becoming the stator soon, guarantees to become soon the ware at the stability of hitting the operation in-process, reduces because of the risk that the vibration produced the circumference drunkenness.

Further, at least part of the rotary transformer stator pressing plate surrounds the rotary transformer stator, and the anti-rotation structure is a limiting protrusion which is arranged on the inner side of the rotary transformer stator pressing plate and extends towards the rotary transformer stator.

Further, spacing arch includes: the connecting section is connected with the rotary transformer stator pressing plate, and the matching section is matched with the rotary transformer stator.

Further, a radial locking structure is arranged on the matching section, and the radial locking structure is matched with the rotary transformer stator to push the rotary transformer stator in the radial direction.

Further, the radial locking structure is a first wedge-shaped edge and a second wedge-shaped edge which are matched with the inner wall surface of the limiting groove on the rotary transformer stator and are opposite to each other.

Further, the included angle between the first wedge-shaped edge and the side edge on the same side of the connecting section is 8-14 degrees, and the included angle between the second wedge-shaped edge and the side edge on the same side of the connecting section is 8-14 degrees.

Further, at least a portion of the connecting section extends in an axial direction of the resolver stator.

Furthermore, the end cover is provided with a positioning groove matched with the limiting bulge, and the limiting bulge is in clearance fit with the positioning groove.

Further, the rotary transformer stator pressing plate and the end cover are positioned through a positioning pin and fixedly connected through a fastener.

Another aspect of the present invention provides a rotary transformer, which includes the above-mentioned pressing device.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a compressing device of a rotary transformer stator according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a rotary transformer stator according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a rotary transformer stator pressing plate according to an embodiment of the present invention;

FIG. 4 is an enlarged schematic view of portion A of FIG. 3;

fig. 5 is a schematic view of an end cap according to an embodiment of the present invention;

fig. 6 is a sectional view of the installed rotary transformer stator according to the embodiment of the present invention.

Reference numerals:

the pressing device (100) is provided with a pressing device,

the end cap 1, the positioning groove 101, the first fixing hole 102,

a rotary transformer pressing plate 2, a positioning pin hole 201, a second fixing hole 202,

the rotational-transformation stator 3, the limit groove 301,

a stop lug 4, a first wedge-shaped edge 41, a second wedge-shaped edge 42,

and a positioning pin 5.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A pressing device 100 of a rotary transformer stator 3 according to an embodiment of the present invention, including an end cover 1 and a rotary transformer stator pressing plate 2, is described below with reference to fig. 1 to 6.

Specifically, the rotary transformer stator pressing plate 2 is arranged on the end cover 1 and is suitable for pressing the rotary transformer stator 3 in the axial direction; wherein be provided with rotation-proof structure on the stator clamp plate 2 soon, rotation-proof structure and the cooperation of revolving the stator 3 in order to restrict revolving the stator 3 and rotate in the week.

In the prior art, the rotary transformer stator 3 is not locked in the circumferential direction, so that the rotary transformer stator 3 has the risk of circumferential rotation relative to the end cover 1; in the process of mass production of the motors, the rotary transformer stator 3 in each motor which is off-line cannot be ensured to be located at the same fixed position relative to the end cover 1, so that the zero positions of the motors are different, and the controller needs to be reset to zero.

The utility model discloses a become closing device 100 of stator 3 soon, through become the detent groove 101 cooperation on stator clamp plate 2 soon with become the ware top cap soon with the rotational lock on 2 location pinhole 201 and the cooperation of end cover 1 locating pin 5, realize becoming the accurate positioning of stator 3 and end cover 1 soon, make the zero-bit of every motor in a less within range, make things convenient for the controller to the control of motor, guarantee the uniformity that the motor rolls off the production line in the manufacturing process.

According to the utility model discloses a closing device 100 of rotary transformer stator 3 through set up on rotary transformer stator clamp plate 2 and prevent changeing the structure, exerts a radial power that compresses tightly to the trough rim of rotary transformer stator 3, and rethread fastener is fixed completely to rotary transformer stator 3, guarantees the stability of motor in the operation process, reduces because of the vibration leads to the condition of 3 circumference drunkenness of rotary transformer stator.

According to an embodiment of the present invention, as shown in fig. 3, at least a portion of the rotary transformer pressing plate 2 surrounds the rotary transformer 3, and the rotation preventing structure is configured as a limiting protrusion 4 disposed inside the rotary transformer pressing plate 2 and extending toward the rotary transformer 3. The part of the rotary transformer stator pressing plate 2 surrounding the rotary transformer stator 3 can axially compress the rotary transformer stator 3; the limiting protrusion 4 can realize radial fixation on the rotary transformer stator 3.

The rotary transformer stator pressing plate 2 can be made of materials such as aluminum alloy, stainless steel and low-carbon steel plates, is manufactured by punching, blanking, bending and other stamping processes, and is suitable for batch production; specifically, a steel plate with the thickness of 1.5mm-2mm can be selected, or a thicker aluminum alloy plate can be selected according to actual conditions.

According to the utility model discloses an embodiment, spacing arch 4 includes: the connecting section is connected with the rotary transformer stator pressing plate 2, and the matching section is matched with the rotary transformer stator 3; specifically, a radial locking structure is arranged on the matching section, and the radial locking structure is matched with the rotary transformer stator 3 to push and abut the rotary transformer stator 3 in the radial direction. Spacing arch 4 can be the stairstepping, and the linkage segment links to each other with the spiral change stator clamp plate 2 and cooperates spacingly with constant head tank 101 on the end cover 1, and the cooperation section of spacing arch 4 can cooperate spiral change stator 3 in radial locking, forms an accurate location between spiral change stator 3 and the spiral change stator clamp plate 2 like this.

The radius and the inner diameter of the rotary variable stator pressing plate 2 are R, the outer diameter and the radius of the rotary variable stator 3 are R, and the inner diameter R of the rotary variable stator pressing plate 2 in a natural state is smaller than the outer diameter R of the rotary variable stator 3. Thus, when the rotary-change stator pressing plate 2 surrounds the rotary-change stator 3, the rotary-change stator pressing plate is tightly pressed on the outer peripheral surface of the rotary-change stator 3, so that a radial force is exerted on the limiting bulge 4 to enable the limiting bulge 4 to be abutted against the inner wall surface of the limiting groove 301 of the rotary-change stator 3.

According to an embodiment of the present invention, as shown in fig. 4, the radial locking structure is a first wedge-shaped edge 41 and a second wedge-shaped edge 42 which are engaged with an inner wall surface of the limiting groove 301 on the rotation-variable stator 3 and are opposite to each other. Through the first wedge limit 41 and the second wedge limit 42 of the wedge structure on the cooperation section, exert a radial pressure power to the spacing groove 301 internal face of changeing stator 3 soon, realize changeing the accurate positioning between stator clamp plate 2 and the changeing stator 3 soon, play and prevent changeing the effect.

According to the utility model discloses an embodiment, as shown in fig. 2, be equipped with a plurality of spacing grooves 301 on the rotary transformer stator 3, can cooperate with spacing arch 4 fast when the installation, easy to assemble.

Specifically, the included angle between the first wedge-shaped edge 41 and the side edge on the same side of the connecting section is 8-14 degrees, and the included angle between the second wedge-shaped edge 42 and the side edge on the same side of the connecting section is 8-14 degrees. The angle between the first wedge-shaped edge 41 and the same side edge of the connecting section and the angle between the second wedge-shaped edge 42 and the same side edge of the connecting section can be adjusted according to the spatial dimension.

According to an embodiment of the present invention, at least part of the connecting section extends in the axial direction of the resolver 3.

According to the utility model discloses an embodiment, as shown in fig. 5, be provided with on the end cover 1 with spacing protruding 4 complex constant head tank 101, spacing protruding 4 and constant head tank 101 clearance fit. Spacing arch 4 on the rotary transformer stator 3 and the constant head tank 101 clearance fit on the end cover 1 make rotary transformer stator clamp plate 2 and end cover 1 form a preliminary location.

The width of the positioning groove 101 is about 0.2mm larger than the connecting section of the limiting protrusion 4, so that the limiting protrusion 4 can be conveniently placed in the positioning groove 101.

According to the utility model discloses an in the embodiment, become stator clamp plate 2 soon and pass through fastener fixed connection with end cover 1 location through locating pin 5. The positioning pin 5 on the end cover 1 can be pressed or directly processed on the end cover 1 and matched with the positioning pin hole 201 on the rotational stator pressing plate 2, so that the rotational stator pressing plate 2 and the end cover 1 can be accurately positioned.

The end cover 1 can be an end cover on a motor or an end cover on a resolver.

According to an embodiment of the present invention, the rotary transformer includes the above-mentioned pressing device 100. Because the compacting device 100 has the characteristics of simple assembly, high reliability and strong practicability, the resolver comprising the compacting device 100 ensures the stability of the resolver in the motor operation process by arranging the anti-rotation structure on the resolver stator pressing plate 2 and applying a radial pressing force to the slot edge of the resolver stator 3, so that the controller does not need to be re-zeroed in the motor batch production process; and in the running process of the motor, the conditions of zero drift and inconvenient control of the motor can not occur.

According to the utility model discloses an embodiment, the closing device 100 installation process of rotary transformer stator 3 is: firstly, placing a rotational-transformation stator 3 into a groove of an end cover 1; aligning the positioning pin hole 201 on the rotary transformer stator pressing plate 2 with the positioning pin 5 of the end cover 1, and aligning the first wedge-shaped edge 41 and the second wedge-shaped edge 42 of the limiting bulge 4 of the rotary transformer stator pressing plate 2 with the limiting groove 301 on the rotary transformer stator 3, and vertically placing the two edges downwards; and finally, sequentially penetrating through a second fixing hole 202 on the rotary transformer stator pressing plate 2 and a first fixing hole 102 on the end cover 1 by using bolts to be screwed and fixed, and axially pressing and fixing the rotary transformer stator pressing plate 2 so as to press the rotary transformer stator 3.

It is necessary to supplement that the resolver is called a resolver, is an electromagnetic sensor, and is a small-sized alternating current motor for measuring angles, and is composed of a resolver stator and a resolver rotor; the utility model discloses an improvement that the circumference of changeing the stator is fixed to revolving in the ware becomes.

In the description of the present invention, it is to be understood that the terms "axial," "radial," "circumferential," and the like refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and simplicity of description, and does 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 thus, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 present 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.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A hold-down device for a resolver stator, comprising:

an end cap (1);

the rotary transformer stator pressing plate (2) is arranged on the end cover (1) and is suitable for pressing the rotary transformer stator (3) in the axial direction; wherein

Be provided with anti-rotation structure on changeing stator clamp plate (2) soon, anti-rotation structure with it cooperates in order to restrict to change stator (3) soon and rotate in circumference.

2. The compressing device of the rotary transformer stator as claimed in claim 1, wherein at least a part of the rotary transformer stator pressing plate (2) surrounds the rotary transformer stator (3), and the rotation preventing structure is configured as a limit protrusion (4) provided inside the rotary transformer stator pressing plate (2) and extending toward the rotary transformer stator (3).

3. The compressing device of a rotary transformer stator according to claim 2, wherein the limit projection (4) comprises: the connecting section is connected with the rotary transformer stator pressing plate (2), and the matching section is matched with the rotary transformer stator (3).

4. Compressing device for a rotating transformer stator according to claim 3, characterized in that the engaging section is provided with a radial locking structure, which cooperates with the rotating transformer stator (3) to push the rotating transformer stator (3) in radial direction.

5. The compressing device of the rotary transformer stator as claimed in claim 4, wherein the radial locking structure is a first wedge-shaped edge (41) and a second wedge-shaped edge (42) which are matched with the inner wall surface of the limiting groove (301) on the rotary transformer stator (3) and are opposite to each other.

6. The compacting device of a resolver stator according to claim 5, wherein the angle between the first wedge edge (41) and the same side edge of the connecting section is 8 ° -14 °, and the angle between the second wedge edge (42) and the same side edge of the connecting section is 8 ° -14 °.

7. A compacting device for a rotating stator according to claim 3, characterised in that at least part of the connecting section extends in the axial direction of the rotating stator (3).

8. The compressing device for the rotary transformer stator as claimed in claim 2, wherein the end cover (1) is provided with a positioning groove (101) matched with the limiting protrusion (4), and the limiting protrusion (4) is in clearance fit with the positioning groove (101).

9. The compressing device of the rotary variable stator according to claim 1, wherein the rotary variable stator pressing plate (2) and the end cover (1) are positioned by a positioning pin (5) and fixedly connected by a fastener.

10. A resolver comprising a compression device as claimed in any one of claims 1 to 9.

Images