WO2024053024A1 - 固定子 - Google Patents

固定子 Download PDF

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Publication number
WO2024053024A1
WO2024053024A1 PCT/JP2022/033591 JP2022033591W WO2024053024A1 WO 2024053024 A1 WO2024053024 A1 WO 2024053024A1 JP 2022033591 W JP2022033591 W JP 2022033591W WO 2024053024 A1 WO2024053024 A1 WO 2024053024A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing material
covering
stator
axial direction
circumferential surface
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2022/033591
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
健司 河合
達也 大井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fanuc Corp
Original Assignee
Fanuc Corp
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 Fanuc Corp filed Critical Fanuc Corp
Priority to DE112022007359.4T priority Critical patent/DE112022007359T5/de
Priority to PCT/JP2022/033591 priority patent/WO2024053024A1/ja
Priority to CN202280098615.5A priority patent/CN119605064A/zh
Priority to JP2024545342A priority patent/JPWO2024053024A1/ja
Priority to TW112130661A priority patent/TW202414961A/zh
Publication of WO2024053024A1 publication Critical patent/WO2024053024A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/062—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces characterised by the geometry of the seat
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/12—Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
    • H02K15/122—Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines of windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets

Definitions

  • the present disclosure relates to a stator such as an electric motor.
  • the molded stator in which the coil ends protruding from both axial ends of a cylindrical stator core are coated with resin, is waterproof and dustproof on the machine side in which it is incorporated. Moreover, in a molded stator, a cylindrical cooling jacket that covers the outer circumference of the stator is sometimes provided. If foreign matter enters the gap between the cooling jacket and the stator resin, insulation performance will deteriorate. A molded stator may fail if its insulation performance deteriorates. Therefore, it is conceivable to provide a sealing material between the cooling jacket and the resin of the stator to seal the gap between the cooling jacket and the resin of the stator. Although the reasons are different, various proposals have been made regarding the case where the gap between the cooling jacket and the resin of the stator is sealed with a sealing material.
  • stator that is inserted into an annular member, and includes a cylindrical stator core and a coil end that projects axially outward from an axial end surface of the stator core. , comprising a coil provided on the stator core, and a cylindrical covering portion provided to cover the coil end and protruding axially outward from an axial end surface of the stator core, the covering The part has a sealing material attachment part to which a sealing material for sealing a gap between the annular member and the covering part is attached, and the sealing material mounting part is attached to an outer peripheral surface of the covering part.
  • the stator has an annular groove shape that is recessed inward in the radial direction, and is open and extends to the outer end in the axial direction of the covering portion.
  • stator that has a simple configuration and can improve maintainability.
  • FIG. 1 is a schematic vertical cross-sectional view showing how the stator according to the first embodiment of the present invention is used.
  • FIG. 3 is a schematic vertical cross-sectional view showing a state in which a stator according to a second embodiment of the present invention is used, and is a partially enlarged view showing a state before sealing with a sealing material.
  • FIG. 3 is a schematic vertical cross-sectional view showing a state in which a stator according to a second embodiment of the present invention is used, and is a partially enlarged view showing a state after sealing with a sealing material.
  • It is a schematic longitudinal cross-sectional view which shows the usage state of the modified example of the stator based on 2nd Embodiment, and is shown by enlarging a part.
  • stator 1 according to a first embodiment will be described.
  • the stator 1 is used together with a rotor (not shown) in an electric motor that powers rotating equipment.
  • the stator 1 includes a cylindrical stator core 2, a coil 3 provided on the stator core 2, and cylindrical covering portions 4, 4' provided on the stator core 2.
  • the device in which the stator 1 is used is not limited to an electric motor, and may be, for example, a generator.
  • the stator core 2 has a cylindrical shape with both ends opened in the axial direction J1, and is made of a magnetic material.
  • the stator core 2 has a plurality of teeth (not shown) that protrude radially inward from the inner circumferential surface. Each of the plurality of teeth extends along the axial direction J1 of the stator core 2. The plurality of teeth are arranged in a line in the circumferential direction of the stator core 2.
  • a coil 3 is attached to each of the plurality of teeth.
  • the coil 3 protrudes in one direction in the axial direction J1 from one end surface in the axial direction J1 of the stator core 2, and in the axial direction from the other end surface in the axial direction J1 of the stator core 2. It protrudes to the other side of J1.
  • the coil 3 has coil ends 5, 5' that protrude outward in the axial direction J1 from the end surface of the stator core 2 in the axial direction J1.
  • Covering portions 4, 4' are provided on the stator core 2 so as to cover the respective coil ends 5, 5'.
  • one covering part 4 is provided on the stator core 2 so as to cover the coil end 5 protruding from one end surface of the stator core 2 in the axial direction J1 in one direction in the axial direction J1.
  • the other covering portion 4' is provided so as to cover a coil end 5' that protrudes from the other end surface of the stator core 2 in the axial direction J1 to the other side in the axial direction J1.
  • One covering portion 4 has a cylindrical shape that protrudes in one direction in the axial direction J1 from one end surface of the stator core 2 in the axial direction J1 while covering the coil end 5.
  • the other covering portion 4' has a cylindrical shape that projects from the other end surface of the stator core 2 in the axial direction J1 in the other direction in the axial direction J1 while covering the coil end 5'.
  • the covering portions 4, 4' have a cylindrical shape extending in the axial direction J1, and protrude outward in the axial direction J1 from the end surface of the stator core 2 in the axial direction J1.
  • the covering parts 4, 4' are made of resin.
  • the stator 1 having such a configuration is inserted into the cylindrical ring member 6.
  • the annular member 6 is a member that covers the outer periphery of the stator 1 , and the stator 1 is fixed to the inner periphery of the annular member 6 .
  • the annular member 6 is, for example, a cooling jacket that cools the stator 1.
  • the annular member 6 has a spiral groove 7 on its outer peripheral surface.
  • the groove portion 7 is open to the outer side in the radial direction of the annular member 6.
  • the opening of the groove 7 is closed by a cylindrical frame (not shown) that covers the outer periphery of the annular member 6.
  • a refrigerant path consisting of a groove 7 with a closed opening is formed between the annular member 6 and the frame.
  • a refrigerant for cooling the stator 1 passes through the refrigerant path.
  • the refrigerant is supplied to the refrigerant path from a supply port formed in the frame.
  • the refrigerant supplied to the refrigerant path from the supply port passes through the spiral refrigerant path, and then is discharged to the outside from the discharge port formed in the frame.
  • gaps 8, 8' are formed for reasons described later.
  • the shapes and paths of the gaps 8, 8' vary depending on the accuracy and temperature of the annular member 6 and the covering parts 4, 4' themselves, but the gaps 8, 8' vary between the stator cores 2 and 4'. It communicates with coil 3.
  • the gaps 8 and 8' are shown larger than they actually are in FIG. 1.
  • the gap 8 between the annular member 6 and one of the covering parts 4 opens on one side in the axial direction J1, which is the outer side of the axial direction J1, and the gap 8 between the annular member 6 and the other covering part 4'
  • the gap 8' is open to the other side of the axial direction J1, which is the outer side of the axial direction J1.
  • gaps 8, 8' that open outward in the axial direction J1 are formed between the annular member 6 and the covering parts 4, 4'.
  • the stator is fixed to the annular member by shrink fitting. Then, the stress applied to the covering part at that time may cause the covering part to crack. Even if it does not break in this situation, the covering section expands due to heat while the motor is driving, and further force is applied to the covering section from the annular member. When force is applied to the covering portion in this manner, the risk of the covering portion cracking further increases. Therefore, the formation of gaps 8, 8' between the annular member 6 and the covering parts 4, 4' is usually unavoidable.
  • gaps 8, 8' are formed between the annular member 6 and the covering parts 4, 4', foreign matter such as liquid or dust may enter the gaps 8, 8' while the stator 1 is in use. There is a possibility. If foreign matter enters the gaps 8, 8', the insulation performance may deteriorate and the stator 1 may malfunction. Therefore, the openings of the gaps 8, 8' are sealed with sealants 9, 9'.
  • the sealing materials 9, 9' are elastically deformable O-rings.
  • One covering part 4 and the other covering part 4' have sealing material attachment parts 10, 10' to which sealing materials 9, 9' for sealing the openings of the gaps 8, 8' are attached.
  • the sealing material mounting portion 10 of one of the covering portions 4 has an annular groove shape along the circumferential direction of the covering portion 4 .
  • the sealing material attachment part 10 has an annular groove shape formed in the outer peripheral surface of the covering part 4 so as to be recessed inward in the radial direction. It extends to the outer end and is open.
  • the sealing material attachment portion 10 is a small diameter portion of the stepped cylindrical covering portion 4 .
  • the encapsulant attaching part 10' of the other covering part 4' basically has the same configuration as the encapsulant attaching part 10 of the one enclosing part 4. However, in the case of the sealing material attachment part 10' of the other covering part 4', the outer side in the axial direction J1 is the other side in the axial direction J1.
  • the covering parts 4, 4' include sealing materials 9, 9 that seal the gaps 8, 8' between the annular member 6 and the covering parts 4, 4'. It has sealing material attachment parts 10, 10' to which ' is attached.
  • the sealing material mounting portions 10, 10' have the configuration described above. With such a configuration, the sealants 9 and 9' attached to the sealant attachment parts 10 and 10' can be attached to the sealant attachment parts 10 and 10 through the openings of the gaps 8 and 8'. 'Easy to remove from. Thereafter, a new sealant 9, 9' can be easily attached to the sealant attachment part 10, 10' via the opening of the gap 8, 8'. Therefore, according to the stator 1 according to the first embodiment, there is no need to remove the stator 1 from the annular member 6 when replacing the sealing materials 9, 9', so the structure is simple and easy to maintain. You can improve your performance.
  • stator 1a of the second embodiment differs from the first embodiment in the configuration of the sealing material attachment part 10 of the covering part 4.
  • one of the covering parts 4 and the other covering part 4 will be explained.
  • the sealing material mounting portion 10 includes a sealing material placement portion 11 located on the inner side in the axial direction J1, which is the other side of the covering portion 4 in the axial direction J1, and a sealing material placement portion 11 located on one side of the covering portion 4 in the axial direction J1. It has a sealing material introduction part 12 located on the outer side in the axial direction J1.
  • the sealant 9 can be placed in the sealant placement section 11 .
  • the sealing material 9 is placed in the sealing material placement portion 11 and seals the opening of the gap 8 between the annular member 6 and the covering portion 4 .
  • the encapsulant introducing section 12 has an open end of the encapsulant attaching section 10 .
  • the sealing material introducing section 12 introduces the sealing material 9 from the open end of the sealing material mounting section 10 into the sealing material placement section 11 . That is, the sealing material introducing section 12 introduces the sealing material 9 from the opening of the gap 8 to the inner side of the sealing material attachment section 10 .
  • the outer circumferential surface 13 of the covering section 4 at the portion corresponding to the sealing material placement section 11 and the outer circumferential surface 14 of the covering section 4 at the section corresponding to the sealing material introducing section 12 are as follows. Continuous. The outer diameter of the outer circumferential surface 13 of the covering part 4 in the part corresponding to the sealing material placement part 11 is determined from the connecting part with the outer peripheral surface 14 of the covering part 4 in the part corresponding to the sealing material introduction part 12 to It becomes larger as it goes inward in the axial direction J1. Specifically, the outer circumferential surface 13 of the covering section 4 in the portion corresponding to the sealing material placement section 11 is tapered so as to increase in diameter as it goes inward in the axial direction J1 of the covering section 4.
  • the outer diameter of the outer circumferential surface 14 of the covering section 4 at the portion corresponding to the sealing material introduction section 12 is different from the outer diameter of the outer circumferential surface 13 of the covering section 4 at the section corresponding to the sealing material placement section 11. It's small.
  • the sealing material 9 is inserted into the sealing material introduction part 12 from the opening of the gap 8. As shown in FIG. 2, the sealing material 9 projects outward in the axial direction J1 of the covering section 4 when inserted into the sealing material introduction part 12. As shown in FIG. 3, the stator 1a is fixed to the mating member 15 with the sealing material 9 inserted into the sealing material introduction part 12. The stator 1 a is fixed to the mating member 15 by screws 17 being screwed into the screw holes 16 of the stator 1 a through the mating member 15 .
  • the sealing material 9 located in the sealing material introducing portion 12 is pushed inward in the axial direction J1 of the covering portion 4 by the mating member 15. Thereby, the sealing material 9 is pushed into the sealing material placement section 11 from the sealing material introducing section 12. The sealing material 9 seals the opening of the gap 8 while being pushed into the sealing material placement section 11 .
  • the encapsulant attaching portion of the other covering portion basically has the same configuration as the encapsulant attaching portion 10 of the one enclosing portion 4.
  • the outer side in the axial direction J1 is the other side in the axial direction J1
  • the inner side in the axial direction J1 is one side in the axial direction J1.
  • a sealing material is attached to the sealing material attachment section of the other covering section in the same manner as in the case of one sealing material attachment section 10.
  • the sealing material 9 is pushed into the sealing material arrangement portion 11 having a small gap while being elastically deformed. Moreover, since the sealing material 9 is pushed into the sealing material arrangement part 11 having a small gap, the contact area with the outer circumferential surface of the covering part 4 and the inner circumferential surface of the annular member 6 increases. Therefore, according to the stator 1a according to the second embodiment, the opening of the gap 8 can be more firmly sealed.
  • stator 1b of this modification differs from the second embodiment in the configuration of the sealing material placement section 11 of the sealing material attachment section 10.
  • one of the covering parts 4 and the other covering part 4 will be explained.
  • the outer diameter of the outer circumferential surface 13 of the covering part 4 in the part corresponding to the sealing material placement part 11 is determined from the connecting part with the outer peripheral surface 14 of the covering part 4 in the part corresponding to the sealing material introduction part 12 to It becomes larger as it goes inward in the axial direction J1, which is the other side in the axial direction J1.
  • the outer circumferential surface 13 of the covering portion 4 in a portion corresponding to the sealing material placement portion 11 bulges outward in the radial direction of the covering portion 4.
  • the vertical cross-sectional shape of the outer circumferential surface 13 of the covering part 4 in the portion corresponding to the sealing material arrangement part 11 is a curved shape that bulges outward in the radial direction of the covering part 4.
  • the vertical cross-sectional shape of the outer circumferential surface 13 of the covering section 4 in the portion corresponding to the sealing material placement section 11 is an arc shape that bulges outward in the radial direction of the covering section 4 .
  • the sealing material 9 is attached to the sealing material attachment part 10 in the same manner as in the second embodiment. Specifically, the sealing material 9 is pushed into the sealing material placement section 11 from the sealing material introducing section 12 by the counterpart member 15 .
  • the encapsulant attaching portion of the other covering portion basically has the same configuration as the encapsulant attaching portion 10 of the one enclosing portion 4.
  • the outer side in the axial direction J1 is the other side in the axial direction J1
  • the inner side in the axial direction J1 is one side in the axial direction J1.
  • a sealing material is attached to the sealing material attachment section of the other covering section in the same manner as in the case of one sealing material attachment section 10.
  • stator 1c of the third embodiment differs from the first embodiment in the configuration of the sealing material attachment part 10 of the covering part 4.
  • one of the covering parts 4 and the other covering part 4 will be explained.
  • the outer diameter of the outer circumferential surface 18 of the covering part 4 at the portion corresponding to the sealing material attachment part 10 is determined from the outer end in the axial direction J1, which is one side of the covering part 4 in the axial direction J1, to the outer diameter of the outer circumferential surface 18 of the covering part 4 It becomes larger toward the inner end in the axial direction J1, which is the other side in the axial direction J1.
  • the outer circumferential surface 18 of the covering part 4 in the portion corresponding to the sealing material attachment part 10 is tapered so as to increase in diameter as it goes inward in the axial direction J1 of the covering part 4. .
  • the sealant 9 is attached to the sealant attachment part 10 in the same manner as in the second embodiment. Specifically, the sealing material 9 is pushed into the back side of the sealing material attachment part 10 from the front side of the sealing material attachment part 10 by the counterpart member 15 . As a result, the sealing material 9 is pushed from a portion with a large gap on the outer side in the axial direction J1 to a portion with a small gap on the inner side in the axial direction J1. Therefore, according to the stator 1c according to the third embodiment, as in the case of the second embodiment, the opening of the gap 8 can be more firmly sealed with a simple configuration.
  • the encapsulant attaching portion of the other covering portion basically has the same configuration as the encapsulant attaching portion 10 of the one enclosing portion 4.
  • the outer side in the axial direction J1 is the other side in the axial direction J1
  • the inner side in the axial direction J1 is one side in the axial direction J1.
  • a sealing material is attached to the sealing material attachment section of the other covering section in the same manner as in the case of one sealing material attachment section 10.
  • stator 1d of the first modification differs from the third embodiment in the configuration of the sealing material attachment portion 10.
  • one of the covering parts 4 and the other covering part 4 will be explained.
  • the outer diameter of the outer circumferential surface 18 of the covering part 4 at the portion corresponding to the sealing material attachment part 10 is determined from the outer end in the axial direction J1, which is one side of the covering part 4 in the axial direction J1, to the outer diameter of the outer circumferential surface 18 of the covering part 4 It becomes larger toward the inner end in the axial direction J1, which is the other side in the axial direction J1.
  • the outer circumferential surface 18 of the covering section 4 in a portion corresponding to the sealing material attaching section 10 bulges outward in the radial direction of the covering section 4 .
  • the vertical cross-sectional shape of the outer circumferential surface 18 of the covering part 4 in the portion corresponding to the sealing material attachment part 10 is a curved shape that bulges outward in the radial direction of the covering part 4.
  • the vertical cross-sectional shape of the outer circumferential surface 18 of the covering portion 4 in the portion corresponding to the sealant attaching portion 10 is an elliptical arc shape that bulges outward in the radial direction of the covering portion 4.
  • the sealing material 9 is moved from the front side of the sealing material mounting portion 10 to the sealing material mounting portion 10 by the mating member 15, as in the case of the second embodiment. is pushed to the back of the Note that the encapsulant attaching portion of the other covering portion has basically the same configuration as the encapsulant attaching portion 10 of the one enclosing portion 4 .
  • the outer side in the axial direction J1 is the other side in the axial direction J1
  • the inner side in the axial direction J1 is one side in the axial direction J1.
  • a sealing material is attached to the sealing material attachment section of the other covering section in the same manner as in the case of one sealing material attachment section 10.
  • stator 1e of the second modification differs from the third embodiment in the configuration of the sealing material attachment portion 10.
  • one of the covering parts 4 and the other covering part 4 will be explained.
  • the outer diameter of the outer circumferential surface 18 of the covering part 4 at the portion corresponding to the sealing material attachment part 10 is determined from the outer end in the axial direction J1, which is one side of the covering part 4 in the axial direction J1, to the outer diameter of the outer circumferential surface 18 of the covering part 4 It becomes larger toward the inner end in the axial direction J1, which is the other side in the axial direction J1.
  • the outer side of the outer circumferential surface 18 of the covering part 4 in the axial direction J1 in the portion corresponding to the sealing material attachment part 10 is recessed inward in the radial direction of the covering part 4, and the part corresponding to the sealing material attachment part 10 is recessed inward in the radial direction of the covering part 4.
  • the inner side of the outer circumferential surface 18 of the covering part 4 in the axial direction J1 in the portion corresponding to the part 10 bulges outward in the radial direction of the covering part 4.
  • the longitudinal cross-sectional shape of the outer circumferential surface 18 of the covering part 4 on the outer side in the axial direction J1 in the portion corresponding to the sealant attaching part 10 is a curved shape concave inward in the radial direction of the covering part 4.
  • the longitudinal cross-sectional shape of the inner side in the axial direction J1 of the outer circumferential surface 18 of the covering part 4 in the portion corresponding to the sealant attaching part 10 is a curved shape that bulges outward in the radial direction of the covering part 4.
  • the outer side in the axial direction J1 of the outer circumferential surface 18 of the covering part 4 in the part corresponding to the sealing material attachment part 10 and the axial direction J1 of the outer circumferential surface 18 of the covering part 4 in the part corresponding to the sealing material attachment part 10 It is smoothly continuous with the inner side of.
  • the sealing material 9 is moved from the front side of the sealing material mounting portion 10 to the sealing material mounting portion 10 by the mating member 15, as in the case of the second embodiment. is pushed to the back of the According to the stator 1e of the second modification, the outer circumferential surface 18 of the covering portion 4 in the portion corresponding to the sealing material mounting portion 10 is recessed on the outer side in the axial direction J1, so that the sealing material 9 is not seated. It can be improved.
  • the encapsulant attaching portion of the other covering portion basically has the same configuration as the encapsulant attaching portion 10 of the one enclosing portion 4.
  • the outer side in the axial direction J1 is the other side in the axial direction J1
  • the inner side in the axial direction J1 is one side in the axial direction J1.
  • a sealing material is attached to the sealing material attachment section of the other covering section in the same manner as in the case of one sealing material attachment section 10.
  • stator 1f of the fourth embodiment differs from the first embodiment in the configuration of the sealing material attachment part 10 of the covering part 4.
  • one of the covering parts 4 and the other covering part 4 will be explained.
  • the sealing material mounting portion 10 includes a sealing material placement portion 11 located on the inner side in the axial direction J1, which is the other side of the covering portion 4 in the axial direction J1, and a sealing material placement portion 11 located on one side of the covering portion 4 in the axial direction J1. It has a sealing material introduction part 12 located on the outer side in the axial direction J1.
  • the sealant 9 can be placed in the sealant placement section 11 .
  • the sealing material 9 is placed in the sealing material placement portion 11 and seals the opening of the gap 8 between the annular member 6 and the covering portion 4 .
  • the encapsulant introducing section 12 has an open end of the encapsulant attaching section 10 .
  • the sealing material introducing section 12 introduces the sealing material 9 from the open end of the sealing material mounting section 10 into the sealing material placement section 11 . That is, the sealing material introducing section 12 introduces the sealing material 9 from the opening of the gap 8 to the inner side of the sealing material attachment section 10 .
  • the outer diameter d81 of the outer circumferential surface 14 of the covering section 4 at the portion corresponding to the sealing material introduction section 12 is the same as the outer diameter d81 of the outer circumferential surface 13 of the covering section 4 at the section corresponding to the sealing material placement section 11. It is larger than the outer diameter d82 and smaller than the outer diameter d83 of the outer circumferential surface of the covering part 4 in the part where the sealing material attachment part 10 is not formed.
  • the covering portion 4 in the portion corresponding to the sealant attachment portion 10 has a stepped cylindrical shape, and has a large diameter portion 19 located on the outer side in the axial direction J1 and an inner side in the axial direction J1. It has a small diameter portion 20 located at .
  • the outer circumferential surface of the large diameter portion 19 is the outer circumferential surface 14 of the covering portion 4 in a portion corresponding to the sealing material introducing portion 12 .
  • the outer circumferential surface of the small diameter portion 20 is the outer circumferential surface 13 of the covering portion 4 in a portion corresponding to the sealing material placement portion 11 .
  • the sealing material 9 is pushed into the sealing material arrangement section 11 from the opening of the gap 8 through the sealing material introducing section 12.
  • the sealing material 9 seals the opening of the gap 8 while being pushed into the sealing material placement section 11 .
  • the outer diameter of the outer circumferential surface 14 of the covering section 4 at the portion corresponding to the sealing material introduction section 12 is smaller than the outer diameter of the outer circumferential surface 13 of the covering section 4 at the section corresponding to the sealing material placement section 11. It's also big. Therefore, the stator 1f according to the fourth embodiment has a configuration in which the sealing material 9 is difficult to come off from the sealing material mounting portion 10.
  • the encapsulant attaching portion of the other covering portion basically has the same configuration as the encapsulant attaching portion 10 of the one enclosing portion 4.
  • the outer side in the axial direction J1 is the other side in the axial direction J1
  • the inner side in the axial direction J1 is one side in the axial direction J1.
  • stator 1g of this modification differs from the fourth embodiment in the configuration of the sealing material attachment portion 10.
  • one of the covering parts 4 and the other covering part 4 will be explained.
  • the outer circumferential surface 13 of the covering section 4 in the portion corresponding to the sealing material placement section 11 and the outer circumferential surface 14 of the covering section 4 in the section corresponding to the sealing material introducing section 12 are continuous. There is.
  • the outer diameter of the outer circumferential surface 13 of the covering part 4 in the part corresponding to the sealing material placement part 11 is determined from the connecting part with the outer peripheral surface 14 of the covering part 4 in the part corresponding to the sealing material introduction part 12 to It becomes smaller as it goes inward in the axial direction J1, which is the other side in the axial direction J1.
  • the outer circumferential surface 13 of the covering part 4 in the portion corresponding to the sealing material placement part 11 is tapered so as to decrease in diameter as it goes inward in the axial direction J1 of the covering part 4. .
  • the outer diameter d91 of the outer circumferential surface 14 of the covering section 4 at the portion corresponding to the sealing material introduction section 12 is equal to the outer diameter d91 of the outer circumferential surface 13 of the covering section 4 at the section corresponding to the sealing material placement section 11. It is large compared to the smallest part d92.
  • the outer diameter d91 of the outer circumferential surface 14 of the covering part 4 in the portion corresponding to the sealing material introduction part 12 is smaller than the outer diameter d93 of the outer circumferential surface of the covering part 4 in the part where the sealing material attachment part 10 is not formed. .
  • the sealant 9 is pushed into the sealant arrangement part 11 from the opening of the gap 8 via the sealant introducing part 12.
  • the encapsulant attaching portion of the other covering portion has basically the same configuration as the encapsulant attaching portion 10 of the one enclosing portion 4 .
  • the outer side in the axial direction J1 is the other side in the axial direction J1
  • the inner side in the axial direction J1 is one side in the axial direction J1.
  • the present invention is not limited to the above-described embodiments and the above-described modifications, and the present invention includes modifications and improvements within the range that can achieve the object of the present invention.
  • the sealing material attachment portion 10 of one covering portion 4 and the sealing material attachment portion 10' of the other covering portion 4' each of the embodiments and each of the modified examples described above can be combined as appropriate.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Frames (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
PCT/JP2022/033591 2022-09-07 2022-09-07 固定子 Ceased WO2024053024A1 (ja)

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PCT/JP2022/033591 WO2024053024A1 (ja) 2022-09-07 2022-09-07 固定子
CN202280098615.5A CN119605064A (zh) 2022-09-07 2022-09-07 定子
JP2024545342A JPWO2024053024A1 (https=) 2022-09-07 2022-09-07
TW112130661A TW202414961A (zh) 2022-09-07 2023-08-15 定子

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0875003A (ja) * 1994-08-30 1996-03-19 Koide Kinzoku Kogyo Kk シールリングの溝構造
JP2003184933A (ja) * 2001-10-09 2003-07-03 Kayaba Ind Co Ltd 油圧緩衝器のシール構造
JP2006226476A (ja) * 2005-02-21 2006-08-31 Mitsubishi Heavy Ind Ltd 圧力容器のマンホール密閉構造
JP2013527740A (ja) * 2010-05-21 2013-06-27 ビーエーイー システムズ ハグランド アクチボラグ 電動機用の冷却装置
JP2022080414A (ja) * 2020-11-18 2022-05-30 日本ガスケット株式会社 ガスケット

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0875003A (ja) * 1994-08-30 1996-03-19 Koide Kinzoku Kogyo Kk シールリングの溝構造
JP2003184933A (ja) * 2001-10-09 2003-07-03 Kayaba Ind Co Ltd 油圧緩衝器のシール構造
JP2006226476A (ja) * 2005-02-21 2006-08-31 Mitsubishi Heavy Ind Ltd 圧力容器のマンホール密閉構造
JP2013527740A (ja) * 2010-05-21 2013-06-27 ビーエーイー システムズ ハグランド アクチボラグ 電動機用の冷却装置
JP2022080414A (ja) * 2020-11-18 2022-05-30 日本ガスケット株式会社 ガスケット

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DE112022007359T5 (de) 2025-04-03
TW202414961A (zh) 2024-04-01
CN119605064A (zh) 2025-03-11

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