CN211266601U

CN211266601U - Motor and processing tool of motor

Info

Publication number: CN211266601U
Application number: CN201922344645.8U
Authority: CN
Inventors: 郑士林
Original assignee: Welling Wuhu Motor Manufacturing Co Ltd
Current assignee: Welling Wuhu Motor Manufacturing Co Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-08-14
Anticipated expiration: 2029-12-23

Abstract

The utility model discloses a machining tool of motor and this motor, the motor, include: the stator is provided with a stator hole, at least one end of the stator hole is provided with a spigot, and the peripheral wall of the spigot is provided with a clamping groove; the end cover comprises an end cover body and a spigot flanging arranged around the circumferential direction of the end cover body, a protrusion is arranged on the spigot flanging, the end cover is arranged in the stator, the spigot flanging is matched with the spigot, and the protrusion is matched in the clamping groove to fix the end cover on the stator. According to the utility model discloses the motor through set up the draw-in groove on the stator tang, is equipped with the arch on the end cover, and the draw-in groove cooperatees with the arch, and the stability of the assembly of end cover and stator is guaranteed simultaneously in the installation of the end cover of being convenient for and stator.

Description

Motor and processing tool of motor

Technical Field

The utility model belongs to the technical field of the motor manufacturing technique and specifically relates to a machining tool of motor and this motor is related to.

Background

In the related art, a conventional plastic-packaged motor generally includes end caps mounted at two axial ends of a stator of the motor to form a bearing chamber for mounting a bearing. During installation, the end cover is pressed into a spigot of the motor stator and is in interference fit with the motor stator, and a flanging assembling surface of the spigot of the end cover and a spigot assembling surface of the motor stator are mutually extruded so as to be assembled together. When the end cover tang flanging cooperates interference with the stator tang greatly, have the stator fracture risk, when the end cover tang flanging cooperates interference with the stator tang less, both cohesion are very weak, and the assembly back end cover easily shifts and pine takes off.

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 utility model is to provide a motor, through set up the draw-in groove on the stator tang, be equipped with the arch on the end cover, the draw-in groove cooperatees with the arch, and the stability of the assembly of end cover and stator is guaranteed simultaneously in the installation of the end cover of being convenient for and stator.

Another object of the present invention is to provide a machining tool for an electric motor.

According to the utility model discloses motor of first aspect embodiment includes: the stator is provided with a stator hole, at least one end of the stator hole is provided with a spigot, and the peripheral wall of the spigot is provided with a clamping groove; the end cover comprises an end cover body and a spigot flanging arranged around the circumferential direction of the end cover body, a protrusion is arranged on the spigot flanging, the end cover is arranged in the stator, the spigot flanging is matched with the spigot, and the protrusion is matched in the clamping groove to fix the end cover on the stator.

According to the utility model discloses the motor of first aspect embodiment, because the utility model discloses the tang of stator in the motor of embodiment and the tang turn-ups cooperation of end cover carry out the joint by protruding draw-in groove on the tang turn-ups and the tang simultaneously, have strengthened the stability of end cover and stator installation, through draw-in groove and protruding joint, reduce the tang fracture risk of the stator because the interference degree is great to lead to simultaneously.

In addition, according to the utility model discloses a motor can also have following additional technical characterstic:

in some embodiments of the present invention, the depth of the slot from the inner wall of the spigot increases gradually in the axial direction from the top towards the bottom of the spigot.

In some embodiments of the present invention, the inner wall of the slot is formed as an inclined plane inclined in a direction of the outer wall of the stator by an inner wall of the spigot.

In some embodiments of the present invention, a straight first step surface is formed between the slot and the inner wall of the seam allowance.

In some embodiments of the present invention, the seam allowance flange is provided with a notch, and the protrusion is connected to the bottom edge of the notch and extends obliquely toward the direction away from the center of the end cover.

In some embodiments of the present invention, the height of the protrusion is equal to the height of the seam allowance flange, and the thickness of the protrusion is equal to the thickness of the seam allowance flange.

In some embodiments of the invention, the protrusion is integrally formed on the end cap.

In some embodiments of the present invention, the locking groove and the protrusion are a plurality of protrusions, and are matched in a one-to-one correspondence.

According to the utility model discloses a processing tool of motor of second aspect embodiment, processing tool is used for making the stator, and includes: a tool body including a stator bore forming portion and a spigot forming portion, the stator bore forming portion and the spigot forming portion being connected to one another; the draw-in groove formed part, the draw-in groove formed part is located in the tang shaping portion and movable along radial direction, just the draw-in groove formed part is constructed its outer end and often stretches out the periphery wall of tang shaping portion.

The utility model discloses the machining tool of motor can make the tang of stator form the draw-in groove on inclined plane through draw-in groove formed part, and from this, the draw-in groove can be in the tang fashioned of stator, and integrated into one piece is on the tang, and the shaping is more convenient. And after the spigot of the stator forms the clamping groove, the inclined plane of the clamping groove and the contact surface of the clamping groove forming part of the machining tool form the attached inclined plane, therefore, the machining tool and the spigot adopt the mode of the reverse drawing die, the spigot is conveniently machined, the working efficiency is high, and the machining tool can be recycled.

In some embodiments of the present invention, a mounting groove is formed on the seam allowance forming portion, the mounting groove extends through the thickness of the seam allowance forming portion, the slot forming member is disposed in the mounting groove, and the processing tool further includes: the limiting piece is arranged in the mounting groove; and two ends of the jacking part are respectively abutted against the clamping groove forming part and the limiting part.

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 top view of a stator of an embodiment of the present invention;

fig. 2 is a cross-sectional view of a stator of an embodiment of the invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 3;

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

fig. 6 is a cross-sectional view of an end cap according to an embodiment of the present invention;

fig. 7 is a top view of the mating of the end cap and stator of an embodiment of the present invention;

fig. 8 is a cross-sectional view of the mating of the end cap and stator of an embodiment of the invention;

FIG. 9 is an enlarged view at C in FIG. 8;

fig. 10 is a cross-sectional view of a slot forming member ejection mounting slot of a machining tool in accordance with an embodiment of the present invention;

fig. 11 is a sectional view of the groove forming member of the processing tool according to the embodiment of the present invention pressed into the mounting groove;

fig. 12 is a plan view of a working tool according to an embodiment of the present invention.

Reference numerals:

a stator 10; a stator bore 11; a spigot 111; a card slot 1111; a first step surface 1112; a second step surface 1113; an inner wall 1114; a first portion 11141; a second portion 11142;

an end cap 20; an end cap body 21; a spigot flange 22; a notch 221; the protrusions 222;

a machining tool 30;

a tool body 3; a stator hole forming portion 31; a spigot forming portion 32; a mounting groove 321;

a slot forming part 4;

a limiting member 5;

and the elastic pressing piece 6.

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.

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", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and 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, 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, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 in specific cases to those skilled in the art.

An electric machine according to an embodiment of the first aspect of the invention is described below with reference to fig. 1-9.

As shown in fig. 1 to 9, an electric motor includes: a stator 10 and an end cap 20.

The stator 10 is provided with a stator hole 11, at least one end of the stator hole 11 is formed with a spigot 111, and a slot 1111 is arranged on the peripheral wall of the spigot 111.

Specifically, a stator hole 11 is formed in the stator 10, a spigot 111 can be formed at least one end of the stator hole 11, that is, the spigot 111 can be formed at one end of the stator hole 11, the spigots 111 can be formed at both ends of the stator hole 11, and meanwhile, a clamping groove 1111 is formed in the peripheral wall of the spigot 111.

The end cover 20 comprises an end cover body 21 and a spigot flanging 22 arranged around the circumference of the end cover body 21, wherein the spigot flanging 22 is provided with a protrusion 222, that is, the end cover 20 consists of the end cover body 21 and the spigot flanging 22 arranged around the circumference of the end cover 20, and the spigot flanging 22 is provided with the protrusion 222.

Further, the end cap 20 is disposed in the stator 10 and the spigot flange 22 is engaged with the spigot 111, wherein the protrusion 222 is engaged in the slot 1111 to fix the end cap 20 to the stator 10.

In other words, the end cover 20 and the stator 10 are installed by the matching of the spigot flange 22 and the spigot 111, and meanwhile, the installation of the end cover 20 and the stator 10 is realized by the snap-fit of the protrusion 222 on the end cover 20 and the slot 1111 on the stator 10.

According to the utility model discloses the motor of first aspect embodiment, because the utility model discloses tang 111 of stator 10 in the motor cooperates with tang turn-ups 22 of end cover 20, carries out the joint by protruding 222 on tang turn-ups 22 and draw-in groove 1111 on the tang 111 simultaneously, has strengthened the stability of end cover 20 with the installation of stator 10, simultaneously through draw-in groove 1111 and protruding 222 joint, reduces the tang 111 fracture risk of stator 10 because the interference degree is great leads to.

Further, as shown in fig. 1-4, the inner diameter of the spigot 111 is larger than the outer diameter of the stator bore 11. And a second step surface 1113 is arranged between the spigot 111 and the stator hole 11.

Therefore, the spigot flange 22 can be matched with the second step surface 1113, so that the end cover 20 and the stator 10 are assembled, and the second step surface 1113 can limit the end cover 20 and the stator 10.

As shown in fig. 2-4, the depth of the catch 1111 from the inner wall 1114 of the spigot 111 increases gradually from the top toward the bottom of the spigot 111 in the axial direction.

As shown in FIG. 4, the inner wall 1114 of the seam allowance 111 includes a first portion 11141 and a second portion 11142, and the first portion 11141 is closer to the opening of the seam allowance 111 than the second portion 11142. Card slot 1111 is located between first portion 11141 and second portion 11142.

Further, the depth d of the card slot 1111 from the inner wall 1114 of the front opening 111 becomes gradually larger, that is, the depth d of the card slot 1111 from the inner wall 1114 of the front opening 111 is the smallest at the position where the card slot 1111 is close to the opening of the front opening 111, that is, the position close to the first portion 11141; accordingly, the depth d of the slot 1111 from the inner wall 1114 of the spigot 111 is maximized at the location where the slot 1111 is near the bottom end of the opening of the spigot 111, i.e., where the slot 1111 is near the second portion 11142.

As seen in fig. 4, the first portion 11141 and the second portion 11142 may alternatively be located on the same arc surface, that is, the radial dimensions of the first portion 11141 and the second portion 11142 may be the same. In addition, the first portion 11141 and the second portion 11142 may also be located on different arc surfaces, that is, the radial dimensions of the first portion 11141 and the second portion 11142 may not be the same.

That is, the inner wall of the slot 1111 is formed as an inclined surface inclined from the inner wall 1114 of the spigot 111 toward the outer wall of the stator 10, that is, the cross section of the slot 1111 is an inclined surface.

As shown in fig. 2-4, a first flat step surface 1112 is formed between the slot 1111 and the inner wall 1114 of the socket 111.

The inner wall 1114 of the spigot 111 has a straight surface at an end close to the stator 10, and an inclined surface at an end close to the edge of the spigot 111, that is, the inner wall 1114 of the spigot 111 is composed of a flat surface and an inclined surface, and a step surface, that is, the first step surface 1112, is formed at a junction of the flat surface and the inclined surface of the inner wall 1114 of the spigot 111. From this draw-in groove 1111's shape is simple, and the shaping is convenient.

As shown in fig. 5 to 6, the seam allowance flange 22 is provided with a notch 221, and a protrusion 222 is connected to the bottom edge of the notch 221 and extends obliquely away from the center of the end cap 20.

Specifically, the spigot flange 22 is provided with a notch 221, and the protrusion 222 is connected with the edge of the lower portion of the notch 221, that is, the protrusion 222 is located at the notch 221, and meanwhile, the protrusion 222 is disposed in an inclined manner, and the upper portion of the protrusion 222 is far away from the center of the end cover 20.

Further, the height of the protrusion 222 is equal to the height of the seam allowance flange 22, and the thickness of the protrusion 222 is equal to the thickness of the seam allowance flange 22. That is, the height of the projection 222 is the same as that of the seam allowance flange 22, and the thickness of the projection 222 is the same as that of the seam allowance flange 22.

The width of the protrusion 222 may be W, and W is narrower, and optionally, the width W of the protrusion 222 may be 2-5 mm. The protrusion 222 and the central axis form a certain included angle α, and the included angle α is larger. Alternatively, the included angle α may range from 10 degrees to 70 degrees.

Therefore, when the end cover 20 is pressed in, the flanging of the spigot 111 of the end cover 20 is in normal interference fit with the spigot 111 of the stator 10, the matching interference of the protrusion 222 of the end cover 20 and the clamping groove 1111 of the stator 10 is larger than that in the prior art, and as the width of the protrusion 222 is narrower, even if the assembling interference is larger, a larger acting force cannot be generated on the spigot 111 of the stator 10, and the spigot 111 of the stator 10 cannot crack.

As shown in fig. 5 and 6, the projection 222 is integrally formed on the end cap 20.

That is, the material of the protrusion 222 is the same as that of the end cap 20, so that the elasticity and rigidity of the protrusion 222 are the same as those of the end cap 20.

As shown in fig. 1 to 9, the plurality of slots 1111 and the protrusions 222 are correspondingly engaged with each other.

Specifically, the end cap 20 is provided with a plurality of protrusions 222 distributed at equal intervals, the stator 10 is provided with a plurality of slots 1111 distributed at equal intervals, and the protrusions 222 correspond to the slots 1111 in number one by one.

Alternatively, the number of the protrusions 222 and the card slots 1111 may be at least two.

Preferably, in the embodiment of the present invention, three locking grooves 1111 may be selected to cooperate with three protrusions 222. Through the cooperation of draw-in groove 1111 and arch 222, can strengthen the installation stability of end cover 20 and stator 10, simultaneously through protruding 222 and the cooperation of draw-in groove 1111, can prevent that end cover 20 and stator 10 from leading to the tang 111 fracture of stator 10 because the interference is great.

As shown in fig. 10 to 12, a machining tool 30 of a motor, the machining tool 30 being used for manufacturing the stator 10, includes: a tool body 3 and a slot forming part 4.

The tool body 3 includes a stator hole forming portion 31 and a spigot forming portion 32, the stator hole forming portion 31 and the spigot forming portion 32 are connected to each other, the pocket forming piece 4 is provided in the spigot forming portion 32 and is movable in the radial direction, and the pocket forming piece 4 is configured such that an outer end thereof always protrudes out of an outer peripheral wall of the spigot forming portion 32.

As shown in fig. 10 to 12, the processing tool 30 is composed of a tool body 3 and a slot forming member 4, a stator hole forming portion 31 for forming the stator hole 11 is provided on the tool body 3, a spigot forming portion 32 for forming the spigot 111 is further provided on the tool body 3, and the stator hole forming portion 31 is connected to the spigot forming portion 32.

Further, the slot forming member 4 is disposed inside the seam allowance forming portion 32, and the slot forming member 4 and the seam allowance forming portion 32 are movably mounted, and at the same time, an outer end portion of the slot forming member 4 is exposed from an outer peripheral portion of the seam allowance forming portion 32 under normal conditions.

From this, in the tang 111 forming process of stator 10, can form draw-in groove 1111 at the tang 111 of stator 10 through draw-in groove formed part 4, and draw-in groove 1111 is the inclined plane, can cooperate with protruding 222 to the inclined plane of draw-in groove 1111 is convenient for the processing instrument 30 and the tang 111 drawing of patterns of stator 10.

According to the utility model discloses the machining tool 30 of motor can make the tang 111 of stator 10 form the draw-in groove 1111 on inclined plane through draw-in groove formed part 4, from this, draw-in groove 1111 can be in the fashioned while of tang 111 of stator 10, and integrated into one piece is on tang 111, and the shaping is more convenient. In addition, after the slot 1111 is formed in the spigot 111 of the stator 10, the inclined surface of the slot 1111 and the contact surface of the slot forming part 4 of the processing tool 30 form a fitted inclined surface, so that the processing tool 30 and the spigot 111 adopt an inverted drawing mode, the spigot 111 is conveniently processed, the working efficiency is high, and the processing tool 30 can be recycled.

As shown in fig. 10 to 12, the spigot forming portion 32 is provided with an installation groove 321 penetrating the thickness thereof, the slot forming member 4 is provided in the installation groove 321, and the processing tool 30 further includes: a limiting part 5 and an elastic jacking part 6.

The spigot forming part 32 is provided with a mounting groove 321, the mounting groove 321 penetrates through the spigot forming part 32, and the slot forming part 4 is movably mounted inside the mounting groove 321.

Furthermore, a limiting member 5 and an elastic pressing member 6 are further installed inside the installation groove 321. The limiting piece 5 is arranged in the mounting groove 321, and two ends of the jacking piece are respectively abutted against the clamping groove forming piece 4 and the limiting piece 5.

Specifically, the limiting member 5 is located at one end of the inside of the mounting groove 321 close to the inner side surface of the spigot forming portion 32, and the limiting member 5 is fixedly mounted in the mounting groove 321. An elastic jacking part 6 is arranged between the clamping groove forming part 4 and the limiting part 5.

Alternatively, the elastic pressing member 6 may be an elastic body such as a spring, elastic rubber, or the like.

From this, in the draw-in groove 1111 forming process of stator 10, the spring is ejecting with draw-in groove formed part 4, with tang 111 department formation draw-in groove 1111, after draw-in groove 1111 forms, because draw-in groove 1111 is the inclined plane with the contact surface of draw-in groove formed part 4, draw-in groove 1111 can be with the inside of draw-in groove formed part 4 top-in mounting groove 321, then tool 30 conveniently breaks away from with stator 10, after tool 30 breaks away from with stator 10, elastic roof pressure piece 6 can be ejecting with draw-in groove formed part 4 again, be convenient for reuse.

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

1. An electric machine, comprising:

the stator is provided with a stator hole, at least one end of the stator hole is provided with a spigot, and the peripheral wall of the spigot is provided with a clamping groove;

the end cover comprises an end cover body and a spigot flanging arranged around the circumferential direction of the end cover body, a protrusion is arranged on the spigot flanging, the end cover is arranged in the stator, the spigot flanging is matched with the spigot, and the protrusion is matched in the clamping groove to fix the end cover on the stator.

2. The electric machine of claim 1 wherein the depth of the catch groove from the inner wall of the spigot increases in the axial direction from the top towards the bottom of the spigot.

3. The motor of claim 1, wherein the inner wall of the slot is formed as a slope inclined from the inner wall of the spigot toward the outer wall of the stator.

4. The motor of claim 1, wherein a flat first step surface is formed between the slot and an inner wall of the spigot.

5. The electric machine of claim 1, wherein the spigot flange is provided with a notch, and the protrusion is connected to a bottom edge of the notch and extends obliquely away from the center of the end cover.

6. The electric machine of claim 1, wherein the height of the protrusion is equal to the height of the spigot flange, and the thickness of the protrusion is equal to the thickness of the spigot flange.

7. The electric machine of claim 1 wherein said projections are integrally formed on said end cap.

8. The motor of claim 1, wherein the plurality of slots and the plurality of protrusions are correspondingly matched.

9. A machine tool for manufacturing an electric machine according to any of claims 1-8, wherein the machine tool is used for manufacturing the stator and comprises:

a tool body including a stator bore forming portion and a spigot forming portion, the stator bore forming portion and the spigot forming portion being connected to one another;

the draw-in groove formed part, the draw-in groove formed part is located in the tang shaping portion and movable along radial direction, just the draw-in groove formed part is constructed its outer end and often stretches out the periphery wall of tang shaping portion.

10. The machine tool of claim 9, wherein the spigot forming portion has a mounting groove formed therethrough, the slot forming member is disposed in the mounting groove, and the machine tool further comprises:

the limiting piece is arranged in the mounting groove;

and two ends of the jacking part are respectively abutted against the clamping groove forming part and the limiting part.