WO2020135981A1 - A motor comprising a stator fixed to the casing - Google Patents

A motor comprising a stator fixed to the casing Download PDF

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Publication number
WO2020135981A1
WO2020135981A1 PCT/EP2019/083508 EP2019083508W WO2020135981A1 WO 2020135981 A1 WO2020135981 A1 WO 2020135981A1 EP 2019083508 W EP2019083508 W EP 2019083508W WO 2020135981 A1 WO2020135981 A1 WO 2020135981A1
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WO
WIPO (PCT)
Prior art keywords
casing
stator
wall
motor
stopper
Prior art date
Application number
PCT/EP2019/083508
Other languages
French (fr)
Inventor
Hasim OTUNC
Caner SIMSEK
Cem DOGAN
Merve Ayca TELEMEZ
Metin OZBAGRIACIK
Original Assignee
Arcelik Anonim Sirketi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to EP19813522.0A priority Critical patent/EP3903407A1/en
Publication of WO2020135981A1 publication Critical patent/WO2020135981A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators

Definitions

  • the present invention relates to a motor comprising a stator fixed to the casing.
  • Electric motors and generators comprise a stationary component called stator and a rotary component called rotor.
  • the stator is the stationary part of the asynchronous motor and consists of sheet metal packages arranged one after the other. Said sheet packages are welded together and form a whole.
  • the stator core is completed by passing windings through the slots of the assembled sheet metal packages.
  • the stator core there is a fully enclosed fan-cooled casing which protects the motor from external factors, particularly in accordance with the definition of IC411. Moreover, the casing perform functions such as cooling the stator and forming connecting surfaces for the motor covers.
  • the casing is produced by direct injection onto the stator.
  • the melting temperature of aluminum is approximately 600 - 700°C. Aluminum melting at this temperature is poured at the outer perimeter of the stator placed into the mod, and thus the casing is produced and assembled on the stator.
  • the casing is produced as a separate part by injection or gray cast iron method and mounted to the stator, which is also produced as a separate part, by the state of the art methods.
  • the casing In order to mount the separately produced casing and stator to each other, heating is applied to the casing.
  • the inner diameter of the casing is kept slightly smaller than the outer diameter of the stator so that the stator can be fixed in the casing.
  • the casing When the casing is heated up to a temperature of approximately 300 ° C, the stator can be easily inserted into the casing. Afterwards, the casing-stator pair is allowed to cool. After cooling, the casing is enabled to hold the stator firmly. The resulting tightness must be such that it is not affected by the maximum torque and the overturning moment of the motor. Thus, the stator is prevented from rotating.
  • energy and time are spent for heating the casing to 300°C, and time is also spent for cooling after the process.
  • an electric motor comprising a channel on the casing, wherein a magnet is placed.
  • a motor comprising channels configured to enable the pipes to surround the stator for cooling down the lamination.
  • the aim of the present invention is the realization of a motor wherein the casing is mounted to the stator in a proper and efficient manner.
  • the motor realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a mounting mechanism which is oppositely positioned on the outer wall and the inner wall of the stator.
  • the mounting mechanism comprises preferably at least four slots extending on the casing, the inner wall of the casing and the length of casing, and claws provided on the outer wall of the stator so as to correspond to said slots. Since the inner diameter of the casing is sufficiently large, the stator is easily mounted to the casing without the need for heating, and the stator is prevented from rotating inside the casing by means of the mounting mechanism comprising said slots and the claws fitted into the slots. A gap smaller than the inner wall of the stator is provided on the inner wall of the casing at the end through which the cable group exits. Thus, the stator is seated into said gap and the movement thereof in this direction is also prevented.
  • a ring which is snap-fittingly mounted to the inner wall of the casing is fixed by press or similar method, thus preventing the movement of the stator in the casing.
  • the need for heating the casing is eliminated, thus preventing energy and time loss.
  • the inner diameter of the casing is at least as much as the outer diameter of the stator.
  • the mounting mechanism comprises preferably at least four slots on the inner wall of the casing and at least one slot on the outer wall of the stator so as to align with at least one of said slots as well as claws positioned so as to align with the other slots.
  • the slot on the outer wall of the stator has the same form as one of the slots on the inner wall of the casing, and the slots on the outer wall of the stator are flat without any angles.
  • the slots on the casing have an angle due to the cast method.
  • the slots oppositely provided on the outer wall of the stator and the inner wall of the casing form a gap. A wedge is driven into this gap so as to jam the stator and the body.
  • the pressure applied by the wedge prevents the stator from moving in the casing in the radial and the axial direction. Since the inner diameter of the casing is sufficiently large, the stator is easily mounted to the casing without the need for heating. A gap smaller than the inner wall of the stator is provided on the casing at the end through which the cable group exits. Thus, the stator is seated into said gap and the movement thereof in this direction is also prevented. By means of this method, the need for heating the casing is eliminated, thus preventing energy and time loss.
  • the inner diameter of the casing is at least as much as the outer diameter of the stator.
  • the mounting mechanism comprises preferably at least four slots on the inner wall of the casing and claws provided on the outer wall of the stator so as to correspond to said slots.
  • a ring is snap-fittingly fitted onto the inner diameter of the casing by press or similar method.
  • On the side of the ring to be seated on the stator there are claws corresponding to the slots in the casing.
  • the claws at the end of the ring engage snap-fittingly with the slots on the casing so as to fixed. Since the inner diameter of the casing is sufficiently large, the stator is easily mounted to the casing without the need for heating and the rotational movement is prevented by means of the mounting mechanism.
  • a gap smaller than the inner wall of the stator is provided on the casing at the end through which the cable group exits.
  • the stator is seated into said gap and the movement thereof in this direction is also prevented.
  • the need for heating the casing is eliminated, thus preventing energy and time loss.
  • the inner diameter of the casing is at least as much as the outer diameter of the stator.
  • the need for heating the casing is eliminated, thus enabling the stator to be mounted to the casing in the most efficient manner with any energy and time loss.
  • Figure 1 - is the perspective view of a stator and a casing.
  • Figure 2 - is the exploded view of the stator and the casing.
  • Figure 3 - is the perspective view of the wedge.
  • the motor (1) comprises a stator (2) which is composed of sheet metal packages arranged in a row and windings wrapped around the sheet metal packages; a casing (3) which is placed around the stator (2) so as to protect the stator (2) from external factors; and a mounting mechanism (4) which is oppositely positioned on the outer wall of the stator (2) and the inner wall of the casing (3), which prevents the stator (2) from moving in the radial and axial direction in the casing (3) and which enables the stator (2) to be efficiently fixed to the casing (3).
  • the mounting mechanism (4) prevents the stator (2) from moving in the radial and axial direction in the casing (3).
  • the mounting mechanism (4) comprises one or more than one slot (5) which extends on the inner wall of the casing (3), along the wall of the casing (3) and parallel to the axis of the casing (3), and one or more than one claw (6) which extends on the outer wall of the stator (2), along the outer wall of the stator (2) so as to correspond to said slots (5).
  • the rotational movement of the stator (2) in the casing (3) is prevented by the claws (6) on the outer wall of the stator (2) which engage with the slots (5) on the inner wall of the casing (3).
  • the mounting mechanism (4) comprises a first stopper (7) provided at one end of the casing (3) and a second stopper (8) provided at the other end of the casing (3) which together prevent the stator (2) from moving forwards-backwards, in the axial direction in the casing (3) and which stop the stator (2) in the casing (3) by bearing against the same at the two ends of the casing (3) ( Figure 1 and Figure 2).
  • the first stopper (7) is in the form of a barrier which is arranged in radial direction along the inner wall of the casing (3).
  • the stator (2) bears against the first stopper (7) and cannot go further in the casing (3).
  • the mounting mechanism (4) comprises an intermediate piece (9) functioning as the second stopper (8).
  • the intermediate piece (9) is attached to the other end of the casing (3) when the stator (2) is fully inserted into the casing (3) and the stator (2) bears against the first stopper (7).
  • the intermediate piece (9) is in the form of a ring and forms a step in the radial direction along the inner wall of the casing (3). Also in this embodiment, since the inner diameter of the casing (3) is smaller than the outer diameter of the stator (2) due to the second stopper (8), the stator (2) bears against the second stopper (8) and cannot go further in the casing (3).
  • the second stopper (8) is produced from aluminum just like the casing (3). In another embodiment of the present invention, the second stopper (8) may also be selected from an iron-based material to provide a more rigid connection.
  • the second stopper (8) may have different dimensions depending on the package length dimension of the stator (2) to be placed in the casing (3).
  • the inner diameter of the casing (3) is at least as much as the outer diameter of the stator (2).
  • the first stopper (7) is preferably located starting at a certain distance from the cable outlet side of the casing (3), and the inner diameter thereof is less than the diameter through which the stator (2) passes. After being fitted into the casing (3) while the same is empty, the stator (2) bears against the first stopper (7).
  • the first stopper (7) in the form of a circumferential barrier prevents the axial movement of the stator (2) in the casing (3) in that direction.
  • a second stopper (8) is used which is snap-fittingly fitted into the inner diameter of the casing (3).
  • the intermediate piece (9) is pushed so as to contact the stator (2) core by press or similar method.
  • the mounting mechanism (4) comprises one or more than one slot (5) which extends on the inner wall of the casing (3), along the wall of the casing (3) and parallel to the axis of the casing (3); at least one additional slot (10) which extends on the outer wall of the stator (2), along the outer wall of the stator (2) so as to align with at least one of the slots (5) and one or more than one claw (6) positioned so as to correspond to the remaining slots (5); and a wedge (11) with a length longer than the length of the slot (5) which is disposed between the overlapping slot (5) and additional slot (10).
  • the wedge (11) is driven into the gap formed between the slot (5) and the additional slot (10) oppositely positioned on the outer wall of the stator (2) and the inner wall of the casing (3) so as to jam the stator (2) and the casing (3).
  • the pressure applied by the wedge (11) prevents the stator (2) from moving in the casing (3) in the radial and the axial direction ( Figure 3).
  • the additional slot (10) on the outer wall of the stator (2) is flat and has no angle at the base thereof.
  • the base of the slots (5) on the inner wall of the casing (3) has an angle of inclination.
  • the wedge (11) also has an inclination corresponding to the base of the slots (5). As the wedge (11) is snap-fittingly fitted into said gap and has an inclined structure, pressure is generated and the movement of the stator (2) is prevented.
  • the first stopper (7) is in the form of a barrier which is arranged in radial direction along the inner wall of the casing (3). Also in this embodiment, since the inner diameter of the casing (3) is smaller than the outer diameter of the stator (2) due to the first stopper (7), the stator (2) bears against the first stopper (7) and cannot go further in the casing (3).
  • the slot (5) and the wedge (11) which have an inclined structure function as the second stopper (8).
  • the inner diameter of the casing (3) is at least as much as the outer diameter of the stator (2).
  • the first stopper (7) is preferably located starting at a certain distance from the cable outlet side of the casing (3), and the inner diameter thereof is less than the diameter through which the stator (2) passes. After being fitted into the casing (3) while the same is empty, the stator (2) bears against the first stopper (7).
  • the first stopper (7) in the form of a circumferential barrier prevents the axial movement of the stator (2) in the casing (3) in that direction.
  • the slot (5) with an inclined base and the inclined wedge (11) fitted into said slot (5), which together function as the second stopper (8), are used.
  • the wedge (11) is snap-fittingly fitted into said gap and has an angular structure, pressure is generated and the axial movement of the stator (2) in this direction is prevented.
  • the mounting mechanism (4) comprises a plurality of slots (5) which extend on the outer wall of the stator (2), along the outer wall of the stator (2) and an intermediate piece (9) which is attached to the other end of the stator (2) and which functions as the second stopper (8).
  • the intermediate piece (9) is attached to the other end of the casing (3) when the stator (2) is fully inserted into the casing (3) and the stator (2) bears against the first stopper (7).
  • the intermediate piece (9) is in the form of a ring and forms a step in the radial direction along the inner wall of the stator (2).
  • the mounting mechanism (4) comprises the claw (6) on the intermediate piece (9) which is partially fitted into the slots (5) on the outer wall of the stator (2). Also in this embodiment, since the inner diameter of the casing (3) is smaller than the outer diameter of the stator (2) due to the second stopper (8), the stator (2) bears against the second stopper (8) and cannot go further in the casing (3).
  • the first stopper (7) is in the form of a barrier which is arranged in radial direction along the inner wall of the casing (3). Also in this embodiment, since the inner diameter of the casing (3) is smaller than the outer diameter of the stator (2) due to the first stopper (7), the stator (2) bears against the first stopper (7) and cannot go further in the casing (3).
  • the intermediate piece (9) functioning as the second stopper (8) comprises the inclined claw (6).
  • the inner diameter of the casing (3) is at least as much as the outer diameter of the stator (2).
  • the first stopper (7) is preferably located starting at a certain distance from the cable outlet side of the casing (3), and the inner diameter thereof is less than the diameter through which the stator (2) passes. After being fitted into the casing (3) while the same is empty, the stator (2) bears against the first stopper (7).
  • the first stopper (7) in the form of a circumferential barrier prevents the axial movement of the stator (2) in the casing (3) in that direction.
  • the intermediate piece (9) functioning as the second stopper (8) is fitted between the stator (2) and the casing (3) from the other end of the stator (2).
  • the claws (6) on the intermediate piece (9) are fitted into the slots (5).
  • the need for heating the casing (3) is eliminated, thus enabling the stator (2) to be mounted to the casing (3) in the most efficient manner with any energy and time loss.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

The present invention relates to a motor (1) comprising a stator (2) which is composed of sheet metal packages arranged in a row and windings wrapped around the sheet metal packages; a casing (3) which is placed around the stator (2) so as to protect the stator (2) from external factors; and a mounting mechanism (4) which is oppositely positioned on the outer wall of the stator (2) and the inner wall of the casing (3), which prevents the stator (2) from moving in the radial and axial direction in the casing (3) and which enables the stator (2) to be efficiently fixed to the casing (3).

Description

A MOTOR COMPRISING A STATOR FIXED TO THE CASING
The present invention relates to a motor comprising a stator fixed to the casing.
Electric motors and generators comprise a stationary component called stator and a rotary component called rotor. The stator is the stationary part of the asynchronous motor and consists of sheet metal packages arranged one after the other. Said sheet packages are welded together and form a whole. The stator core is completed by passing windings through the slots of the assembled sheet metal packages.
Around the stator core, there is a fully enclosed fan-cooled casing which protects the motor from external factors, particularly in accordance with the definition of IC411. Moreover, the casing perform functions such as cooling the stator and forming connecting surfaces for the motor covers.
Different methods are used for the assembly of the casing and the stator.
In a state of the art embodiment, the casing is produced by direct injection onto the stator. The melting temperature of aluminum is approximately 600 - 700°C. Aluminum melting at this temperature is poured at the outer perimeter of the stator placed into the mod, and thus the casing is produced and assembled on the stator.
In another state of the art method, the casing is produced as a separate part by injection or gray cast iron method and mounted to the stator, which is also produced as a separate part, by the state of the art methods.
In order to mount the separately produced casing and stator to each other, heating is applied to the casing. The inner diameter of the casing is kept slightly smaller than the outer diameter of the stator so that the stator can be fixed in the casing. When the casing is heated up to a temperature of approximately 300 ° C, the stator can be easily inserted into the casing. Afterwards, the casing-stator pair is allowed to cool. After cooling, the casing is enabled to hold the stator firmly. The resulting tightness must be such that it is not affected by the maximum torque and the overturning moment of the motor. Thus, the stator is prevented from rotating. However, in the present method, energy and time are spent for heating the casing to 300°C, and time is also spent for cooling after the process.
In the state of the art Chinese Patent Application No. CN104600944, an electric motor is disclosed, comprising a channel on the casing, wherein a magnet is placed.
Another state of the art embodiment is disclosed in the International Patent Application No. WO2014184040. In this embodiment, a motor is disclosed, comprising channels configured to enable the pipes to surround the stator for cooling down the lamination.
The aim of the present invention is the realization of a motor wherein the casing is mounted to the stator in a proper and efficient manner.
The motor realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a mounting mechanism which is oppositely positioned on the outer wall and the inner wall of the stator.
In the embodiment of the present invention, the mounting mechanism comprises preferably at least four slots extending on the casing, the inner wall of the casing and the length of casing, and claws provided on the outer wall of the stator so as to correspond to said slots. Since the inner diameter of the casing is sufficiently large, the stator is easily mounted to the casing without the need for heating, and the stator is prevented from rotating inside the casing by means of the mounting mechanism comprising said slots and the claws fitted into the slots. A gap smaller than the inner wall of the stator is provided on the inner wall of the casing at the end through which the cable group exits. Thus, the stator is seated into said gap and the movement thereof in this direction is also prevented. In order to prevent movement in the opposite direction, a ring which is snap-fittingly mounted to the inner wall of the casing is fixed by press or similar method, thus preventing the movement of the stator in the casing. By means of this method, the need for heating the casing is eliminated, thus preventing energy and time loss. In this embodiment of the present invention, the inner diameter of the casing is at least as much as the outer diameter of the stator.
In another embodiment of the present invention, the mounting mechanism comprises preferably at least four slots on the inner wall of the casing and at least one slot on the outer wall of the stator so as to align with at least one of said slots as well as claws positioned so as to align with the other slots. The slot on the outer wall of the stator has the same form as one of the slots on the inner wall of the casing, and the slots on the outer wall of the stator are flat without any angles. On the other hand, the slots on the casing have an angle due to the cast method. The slots oppositely provided on the outer wall of the stator and the inner wall of the casing form a gap. A wedge is driven into this gap so as to jam the stator and the body. The pressure applied by the wedge prevents the stator from moving in the casing in the radial and the axial direction. Since the inner diameter of the casing is sufficiently large, the stator is easily mounted to the casing without the need for heating. A gap smaller than the inner wall of the stator is provided on the casing at the end through which the cable group exits. Thus, the stator is seated into said gap and the movement thereof in this direction is also prevented. By means of this method, the need for heating the casing is eliminated, thus preventing energy and time loss. In this embodiment of the present invention, the inner diameter of the casing is at least as much as the outer diameter of the stator.
In another embodiment of the present invention, the mounting mechanism comprises preferably at least four slots on the inner wall of the casing and claws provided on the outer wall of the stator so as to correspond to said slots. In order to prevent the movement in the opposite direction, a ring is snap-fittingly fitted onto the inner diameter of the casing by press or similar method. On the side of the ring to be seated on the stator, there are claws corresponding to the slots in the casing. The claws at the end of the ring engage snap-fittingly with the slots on the casing so as to fixed. Since the inner diameter of the casing is sufficiently large, the stator is easily mounted to the casing without the need for heating and the rotational movement is prevented by means of the mounting mechanism. A gap smaller than the inner wall of the stator is provided on the casing at the end through which the cable group exits. Thus, the stator is seated into said gap and the movement thereof in this direction is also prevented. By means of this method, the need for heating the casing is eliminated, thus preventing energy and time loss. In this embodiment of the present invention, the inner diameter of the casing is at least as much as the outer diameter of the stator.
By means of the present invention, the need for heating the casing is eliminated, thus enabling the stator to be mounted to the casing in the most efficient manner with any energy and time loss.
A motor realized in order to attain the aim of the present invention is illustrated in the attached figures, where:
Figure 1 - is the perspective view of a stator and a casing.
Figure 2 - is the exploded view of the stator and the casing.
Figure 3 - is the perspective view of the wedge.
The elements illustrated in the figures are numbered as follows:
  1. Motor
  2. Stator
  3. Casing
  4. Mounting mechanism
  5. Slot
  6. Claw
  7. First stopper
  8. Second stopper
  9. Intermediate member
  10. Addition slot
  11. Wedge
The motor (1) comprises a stator (2) which is composed of sheet metal packages arranged in a row and windings wrapped around the sheet metal packages; a casing (3) which is placed around the stator (2) so as to protect the stator (2) from external factors; and a mounting mechanism (4) which is oppositely positioned on the outer wall of the stator (2) and the inner wall of the casing (3), which prevents the stator (2) from moving in the radial and axial direction in the casing (3) and which enables the stator (2) to be efficiently fixed to the casing (3).
In the embodiment of the present invention, the mounting mechanism (4) prevents the stator (2) from moving in the radial and axial direction in the casing (3).
In an embodiment of the present invention, the mounting mechanism (4) comprises one or more than one slot (5) which extends on the inner wall of the casing (3), along the wall of the casing (3) and parallel to the axis of the casing (3), and one or more than one claw (6) which extends on the outer wall of the stator (2), along the outer wall of the stator (2) so as to correspond to said slots (5). The rotational movement of the stator (2) in the casing (3) is prevented by the claws (6) on the outer wall of the stator (2) which engage with the slots (5) on the inner wall of the casing (3). Moreover, the mounting mechanism (4) comprises a first stopper (7) provided at one end of the casing (3) and a second stopper (8) provided at the other end of the casing (3) which together prevent the stator (2) from moving forwards-backwards, in the axial direction in the casing (3) and which stop the stator (2) in the casing (3) by bearing against the same at the two ends of the casing (3) (Figure 1 and Figure 2).
In this embodiment of the present invention, in the mounting mechanism (4), the first stopper (7) is in the form of a barrier which is arranged in radial direction along the inner wall of the casing (3). In this embodiment, since the inner diameter of the casing (3) is smaller than the outer diameter of the stator (2) due to the first stopper (7), the stator (2) bears against the first stopper (7) and cannot go further in the casing (3).
In this embodiment of the present invention, the mounting mechanism (4) comprises an intermediate piece (9) functioning as the second stopper (8). The intermediate piece (9) is attached to the other end of the casing (3) when the stator (2) is fully inserted into the casing (3) and the stator (2) bears against the first stopper (7). The intermediate piece (9) is in the form of a ring and forms a step in the radial direction along the inner wall of the casing (3). Also in this embodiment, since the inner diameter of the casing (3) is smaller than the outer diameter of the stator (2) due to the second stopper (8), the stator (2) bears against the second stopper (8) and cannot go further in the casing (3).
In an embodiment of the present invention, the second stopper (8) is produced from aluminum just like the casing (3). In another embodiment of the present invention, the second stopper (8) may also be selected from an iron-based material to provide a more rigid connection.
In an embodiment of the present invention, the second stopper (8) may have different dimensions depending on the package length dimension of the stator (2) to be placed in the casing (3).
In this embodiment of the present invention, the inner diameter of the casing (3) is at least as much as the outer diameter of the stator (2). Thus, the need for the heating process to expand the inner diameter is eliminated. The first stopper (7) is preferably located starting at a certain distance from the cable outlet side of the casing (3), and the inner diameter thereof is less than the diameter through which the stator (2) passes. After being fitted into the casing (3) while the same is empty, the stator (2) bears against the first stopper (7). The first stopper (7) in the form of a circumferential barrier prevents the axial movement of the stator (2) in the casing (3) in that direction. In order to prevent the axial movement in the other direction, a second stopper (8) is used which is snap-fittingly fitted into the inner diameter of the casing (3). The intermediate piece (9) is pushed so as to contact the stator (2) core by press or similar method. When the ring-shaped intermediate piece (9) contacts the stator (2), the process ends, and the axial movement of the stator (2) in this direction is also prevented by the second stopper (8).
In another embodiment of the present invention, the mounting mechanism (4) comprises one or more than one slot (5) which extends on the inner wall of the casing (3), along the wall of the casing (3) and parallel to the axis of the casing (3); at least one additional slot (10) which extends on the outer wall of the stator (2), along the outer wall of the stator (2) so as to align with at least one of the slots (5) and one or more than one claw (6) positioned so as to correspond to the remaining slots (5); and a wedge (11) with a length longer than the length of the slot (5) which is disposed between the overlapping slot (5) and additional slot (10). In the embodiment of the present invention, the wedge (11) is driven into the gap formed between the slot (5) and the additional slot (10) oppositely positioned on the outer wall of the stator (2) and the inner wall of the casing (3) so as to jam the stator (2) and the casing (3). The pressure applied by the wedge (11) prevents the stator (2) from moving in the casing (3) in the radial and the axial direction (Figure 3).
In an embodiment of the present invention, the additional slot (10) on the outer wall of the stator (2) is flat and has no angle at the base thereof. The base of the slots (5) on the inner wall of the casing (3) has an angle of inclination. In this embodiment of the invention, the wedge (11) also has an inclination corresponding to the base of the slots (5). As the wedge (11) is snap-fittingly fitted into said gap and has an inclined structure, pressure is generated and the movement of the stator (2) is prevented.
In this embodiment of the present invention, in the mounting mechanism (4), the first stopper (7) is in the form of a barrier which is arranged in radial direction along the inner wall of the casing (3). Also in this embodiment, since the inner diameter of the casing (3) is smaller than the outer diameter of the stator (2) due to the first stopper (7), the stator (2) bears against the first stopper (7) and cannot go further in the casing (3).
In this embodiment of the present invention, the slot (5) and the wedge (11) which have an inclined structure function as the second stopper (8).
In this embodiment of the present invention, the inner diameter of the casing (3) is at least as much as the outer diameter of the stator (2). Thus, the need for the heating process to expand the inner diameter is eliminated. The first stopper (7) is preferably located starting at a certain distance from the cable outlet side of the casing (3), and the inner diameter thereof is less than the diameter through which the stator (2) passes. After being fitted into the casing (3) while the same is empty, the stator (2) bears against the first stopper (7). The first stopper (7) in the form of a circumferential barrier prevents the axial movement of the stator (2) in the casing (3) in that direction. In order to prevent the axial movement in the other direction, the slot (5) with an inclined base and the inclined wedge (11) fitted into said slot (5), which together function as the second stopper (8), are used. As the wedge (11) is snap-fittingly fitted into said gap and has an angular structure, pressure is generated and the axial movement of the stator (2) in this direction is prevented.
In another embodiment of the present invention, the mounting mechanism (4) comprises a plurality of slots (5) which extend on the outer wall of the stator (2), along the outer wall of the stator (2) and an intermediate piece (9) which is attached to the other end of the stator (2) and which functions as the second stopper (8).
The intermediate piece (9) is attached to the other end of the casing (3) when the stator (2) is fully inserted into the casing (3) and the stator (2) bears against the first stopper (7). The intermediate piece (9) is in the form of a ring and forms a step in the radial direction along the inner wall of the stator (2). The mounting mechanism (4) comprises the claw (6) on the intermediate piece (9) which is partially fitted into the slots (5) on the outer wall of the stator (2). Also in this embodiment, since the inner diameter of the casing (3) is smaller than the outer diameter of the stator (2) due to the second stopper (8), the stator (2) bears against the second stopper (8) and cannot go further in the casing (3).
In this embodiment of the present invention, in the mounting mechanism (4), the first stopper (7) is in the form of a barrier which is arranged in radial direction along the inner wall of the casing (3). Also in this embodiment, since the inner diameter of the casing (3) is smaller than the outer diameter of the stator (2) due to the first stopper (7), the stator (2) bears against the first stopper (7) and cannot go further in the casing (3).
In this embodiment of the present invention, the intermediate piece (9) functioning as the second stopper (8) comprises the inclined claw (6).
In this embodiment of the present invention, the inner diameter of the casing (3) is at least as much as the outer diameter of the stator (2). Thus, the need for the heating process to expand the inner diameter is eliminated. The first stopper (7) is preferably located starting at a certain distance from the cable outlet side of the casing (3), and the inner diameter thereof is less than the diameter through which the stator (2) passes. After being fitted into the casing (3) while the same is empty, the stator (2) bears against the first stopper (7). The first stopper (7) in the form of a circumferential barrier prevents the axial movement of the stator (2) in the casing (3) in that direction. In order to prevent the axial movement in the other direction, the intermediate piece (9) functioning as the second stopper (8) is fitted between the stator (2) and the casing (3) from the other end of the stator (2). The claws (6) on the intermediate piece (9) are fitted into the slots (5). By means of the inclined claws (6) or the all-around barrier formed by the intermediate piece (9), pressure is created and the axial movement of the stator (2) in this direction is prevented.
By means of the present invention, the need for heating the casing (3) is eliminated, thus enabling the stator (2) to be mounted to the casing (3) in the most efficient manner with any energy and time loss.

Claims (12)

  1. A motor (1) comprising a stator (2) which is composed of sheet metal packages arranged in a row and windings wrapped around the sheet metal packages; and a casing (3) which is placed around the stator (2) so as to protect the stator (2) from external factors; characterized by a mounting mechanism (4) which is oppositely positioned on the outer wall of the stator (2) and the inner wall of the casing (3), which prevents the stator (2) from moving in the radial and axial direction in the casing (3) and which enables the stator (2) to be efficiently fixed to the casing (3).
  2. A motor (1) as in Claim 1, characterized by the mounting mechanism (4) comprising one or more than one slot (5) which extends on the inner wall of the casing (3), along the wall of the casing (3) and parallel to the axis of the casing (3), and one or more than one claw (6) which extends on the outer wall of the stator (2), along the outer wall of the stator (2) so as to correspond to said slots (5).
  3. A motor (1) as in Claim 1, characterized by the mounting mechanism (4) comprising a first stopper (7) provided at one end of the casing (3) and a second stopper (8) provided at the other end of the casing (3) which together prevent the stator (2) from moving forwards-backwards, in the axial direction in the casing (3) and which stop the stator (2) in the casing (3) by bearing against the same at the two ends of the casing (3).
  4. A motor (1) as in Claim 3, characterized by the first stopper (7) which is in the form of a barrier arranged in radial direction along the inner wall of the casing (3).
  5. A motor (1) as in Claim 3, characterized by the mounting mechanism (4) comprising an intermediate piece (9) functioning as the second stopper (8).
  6. A motor (1) as in Claim 5, characterized by the ring-shaped intermediate piece (9).
  7. A motor (1) as in Claim 1, characterized by the mounting mechanism (4) comprising one or more than one slot (5) which extends on the inner wall of the casing (3), along the wall of the casing (3) and parallel to the axis of the casing (3); at least one additional slot (10) which extends on the outer wall of the stator (2), along the outer wall of the stator (2) so as to align with at least one of the slots (5) and one or more than one claw (6) positioned so as to correspond to the remaining slots (5); and a wedge (11) with a length longer than the length of the slot (5) which is disposed between the overlapping slot (5) and additional slot (10).
  8. A motor (1) as in Claim 7, characterized by the flat additional slot (10).
  9. A motor (1) as in Claim 7, characterized by the slot (5) of which the base is inclined at a certain angle.
  10. A motor (1) as in Claim 7, 8 and 9, characterized by the second stopper (8) comprising the slot (5) and the wedge (11) which both have an inclined structure.
  11. A motor (1) as in Claim 1, characterized by the mounting mechanism (4) comprising a plurality of slots (5) which extend on the outer wall of the stator (2), along the outer wall of the stator (2) and an intermediate piece (9) which is attached to the other end of the stator (2) and which functions as the second stopper (8).
  12. A motor (1) as in Claim 11, characterized by the mounting mechanism (4) comprising the claw (6) on the intermediate piece (9) which is partially fitted into the slots (5) on the outer wall of the stator (2).
PCT/EP2019/083508 2018-12-26 2019-12-03 A motor comprising a stator fixed to the casing WO2020135981A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19813522.0A EP3903407A1 (en) 2018-12-26 2019-12-03 A motor comprising a stator fixed to the casing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2018/20590 2018-12-26
TR2018/20590A TR201820590A2 (en) 2018-12-26 2018-12-26 A MOTOR CONTAINING A STATOR FIXED TO THE BODY

Publications (1)

Publication Number Publication Date
WO2020135981A1 true WO2020135981A1 (en) 2020-07-02

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PCT/EP2019/083508 WO2020135981A1 (en) 2018-12-26 2019-12-03 A motor comprising a stator fixed to the casing

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EP (1) EP3903407A1 (en)
TR (1) TR201820590A2 (en)
WO (1) WO2020135981A1 (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5545618U (en) * 1978-09-18 1980-03-25
DE3624923A1 (en) * 1985-10-02 1987-04-02 Bbc Brown Boveri & Cie Stator of an electrical machine having a laminated stator core which is laminated directly into the housing, and a method for its production
JP2005269803A (en) * 2004-03-19 2005-09-29 Mitsubishi Electric Corp Permanent-magnetic motor
US20050236924A1 (en) * 2004-04-26 2005-10-27 Siemens Westinghouse Power Corporation Method and apparatus for the mounting of and circumferential displacement of radial forces in a stator core assembly
KR20130044418A (en) * 2011-10-24 2013-05-03 엘지이노텍 주식회사 Motor having stator core slip prevent unit
EP2790300A2 (en) * 2013-04-12 2014-10-15 LG Electronics Inc. Electric Motor
WO2014184040A1 (en) 2013-05-14 2014-11-20 Siemens Aktiengesellschaft Electric motor
CN104600944A (en) 2014-06-23 2015-05-06 深圳市乐丰科技有限公司 Permanent magnet switch reluctance machine and a stator assembly thereof
US20170264159A1 (en) * 2014-11-28 2017-09-14 Panasonic Intellectual Property Management Co., Ltd. Inner-rotor-type motor and electric tool provided with same
JP2017184552A (en) * 2016-03-31 2017-10-05 株式会社Ｓｕｂａｒｕ Motor device and method for fixing stator

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5545618U (en) * 1978-09-18 1980-03-25
DE3624923A1 (en) * 1985-10-02 1987-04-02 Bbc Brown Boveri & Cie Stator of an electrical machine having a laminated stator core which is laminated directly into the housing, and a method for its production
JP2005269803A (en) * 2004-03-19 2005-09-29 Mitsubishi Electric Corp Permanent-magnetic motor
US20050236924A1 (en) * 2004-04-26 2005-10-27 Siemens Westinghouse Power Corporation Method and apparatus for the mounting of and circumferential displacement of radial forces in a stator core assembly
KR20130044418A (en) * 2011-10-24 2013-05-03 엘지이노텍 주식회사 Motor having stator core slip prevent unit
EP2790300A2 (en) * 2013-04-12 2014-10-15 LG Electronics Inc. Electric Motor
WO2014184040A1 (en) 2013-05-14 2014-11-20 Siemens Aktiengesellschaft Electric motor
CN104600944A (en) 2014-06-23 2015-05-06 深圳市乐丰科技有限公司 Permanent magnet switch reluctance machine and a stator assembly thereof
US20170264159A1 (en) * 2014-11-28 2017-09-14 Panasonic Intellectual Property Management Co., Ltd. Inner-rotor-type motor and electric tool provided with same
JP2017184552A (en) * 2016-03-31 2017-10-05 株式会社Ｓｕｂａｒｕ Motor device and method for fixing stator

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Publication number Publication date
TR201820590A2 (en) 2020-07-21
EP3903407A1 (en) 2021-11-03

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