CN115030973B - Electromagnet, electromagnetic brake and elevator traction machine - Google Patents
Electromagnet, electromagnetic brake and elevator traction machine Download PDFInfo
- Publication number
- CN115030973B CN115030973B CN202110671436.3A CN202110671436A CN115030973B CN 115030973 B CN115030973 B CN 115030973B CN 202110671436 A CN202110671436 A CN 202110671436A CN 115030973 B CN115030973 B CN 115030973B
- Authority
- CN
- China
- Prior art keywords
- electromagnet
- lead
- guide groove
- electromagnetic coil
- brake
- 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.)
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Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
- B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/20—Electric or magnetic using electromagnets
Abstract
The invention provides an electromagnet, an electromagnetic brake and an elevator traction machine. The invention aims to obtain an electromagnet capable of inhibiting the reduction of attraction capability. An opening (11 d) is provided in a part of the outer pole part (11 b). The opening (11 d) exposes the 1 st lead-out portion (14 a) and the 2 nd lead-out portion (14 b) to the outside of the outer electrode portion (11 b). A1 st guide groove (12 d) and a 2 nd guide groove (12 e) are provided in a portion of the 2 nd flange portion (12 c) facing the opening (11 d). The 1 st lead-out part (14 a) is inserted into and along the 1 st guide groove (12 d). The 2 nd lead-out part (14 b) is inserted into and along the 2 nd guide groove (12 e).
Description
Technical Field
The invention relates to an electromagnet, an electromagnetic brake and an elevator traction machine.
Background
In an electromagnet of a conventional brake device, a fixed iron core has an inner pole iron core and an outer pole iron core. The outer pole iron core is arranged around the inner pole iron core. The inner pole iron core is provided with a winding tube. The spool is provided with a brake coil.
The brake coil is formed by coil wires. Both end portions of the coil wire are led out from the brake coil as a pair of lead-out portions. The outer pole core is provided with a slit for drawing out a pair of drawing portions to the outside of the outer pole core (for example, see patent document 1).
Prior art literature
Patent literature
Patent document 1: japanese patent application laid-open No. 2014-190531
In the conventional electromagnet described above, there is a deviation in the positions of the pair of lead portions depending on the brake coil. Further, when at least one of the pair of lead-out portions is in contact with the outer pole core, there is a concern that insulation breakdown may occur between the coil wire and the outer pole core. Therefore, the incision needs to be increased, and the attraction capability of the electromagnet is reduced due to the reduction in the area of the outer pole core.
Disclosure of Invention
The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an electromagnet, an electromagnetic brake, and an elevator hoisting machine that can suppress a decrease in suction capacity.
The electromagnet of the invention comprises: a bobbin having a cylindrical portion and a flange portion; an electromagnetic coil formed of an electric wire wound around the cylindrical portion; and an iron core having an inner pole portion inserted in the cylindrical portion and an outer pole portion surrounding the bobbin, the electric wire having a lead-out portion led out from the electromagnetic coil, the outer pole portion being provided with an opening exposing the lead-out portion to the outside of the outer pole portion, and a guide groove along which the lead-out portion is provided at a portion of the flange portion facing the opening.
Effects of the invention
According to the present invention, the reduction in the attraction capability of the electromagnet can be suppressed.
Drawings
Fig. 1 is a front view showing an elevator hoisting machine according to embodiment 1.
Fig. 2 is a side view illustrating the elevator traction machine of fig. 1.
Fig. 3 is a top view showing the electromagnet of fig. 1.
Fig. 4 is a front view showing the electromagnet of fig. 3.
Fig. 5 is a front view showing an enlarged main portion of fig. 4.
Fig. 6 is a plan view showing a main part of the electromagnet of embodiment 2.
Description of the reference numerals
6: an electromagnetic brake; 7: an electromagnet; 11: an iron core; 11a: an inner pole part; 11b: an outer pole portion; 11d: an opening; 12: a bobbin; 12a: a cylindrical portion; 12c: a 2 nd flange portion; 12d: a 1 st guide groove; 12e: a 2 nd guide groove; 13: an electromagnetic coil; 14: an electric wire; 14a: a 1 st lead-out part; 14b: a 2 nd lead-out part; 21: a deep groove portion; 22: an inclined portion; 23: a groove main portion; 24: an outlet portion; 25: insulating protective tube.
Detailed Description
Hereinafter, embodiments will be described with reference to the drawings.
Embodiment 1
Fig. 1 is a front view showing an elevator hoisting machine according to embodiment 1. Fig. 2 is a side view illustrating the elevator traction machine of fig. 1. In the figure, an elevator hoisting machine includes a casing 1, a main shaft 2, a drive sheave 3, a hoisting machine motor 4, a brake drum 5, and a pair of electromagnetic brakes 6.
The spindle 2 is horizontally fixed to the housing 1. The drive sheave 3 is supported by the main shaft 2. The drive sheave 3 rotates around the main shaft 2.
A suspension body, not shown, is wound around the drive sheave 3. As the suspension body, a plurality of ropes or a plurality of belts are used. A car not shown and a counterweight not shown are suspended on the suspension body. The car and the counterweight are lifted and lowered in the hoistway by rotation of the drive sheave 3.
The hoisting machine motor 4 is supported by the casing 1. The hoisting machine motor 4 rotates the drive sheave 3. The brake drum 5 is fixed relative to the drive sheave 3. The brake drum 5 rotates integrally with the drive sheave 3 around the main shaft 2.
A pair of electromagnetic brakes 6 are mounted to the housing 1. Further, a pair of electromagnetic brakes 6 is arranged radially outward of the brake drum 5. The pair of electromagnetic brakes 6 maintain the drive sheave 3 and the brake drum 5 in a stationary state. The pair of electromagnetic brakes 6 brake the rotation of the drive sheave 3 and the brake drum 5.
Each electromagnetic brake 6 includes an electromagnet 7, an armature 8, a brake shoe 9, and a brake spring, not shown.
The brake shoe 9 is supported by the armature 8. The armature 8 and the brake shoe 9 are movable relative to the electromagnet 7 in a direction to contact with or separate from the braking surface 5a. The braking surface 5a is the outer peripheral surface of the brake drum 5.
The brake spring generates a force that presses the brake shoe 9 against the braking surface 5a. When the braking force of each electromagnetic brake 6 is applied, the brake shoe 9 is pressed against the braking surface 5a by the brake spring. When the braking force of each electromagnetic brake 6 is released, the electromagnet 7 attracts the armature 8 against the braking spring. Thereby, the brake shoe 9 is separated from the braking surface 5a.
Fig. 3 is a plan view showing the electromagnet 7 of fig. 1. Fig. 4 is a front view showing the electromagnet 7 of fig. 3. The attraction surface of the attraction armature 8 is the upper surface in fig. 4.
The electromagnet 7 has a core 11, a bobbin 12, an electromagnetic coil 13, and an insulating tape 15.
The core 11 is made of iron, for example. The core 11 includes an inner pole portion 11a, an outer pole portion 11b, and a flat bottom portion 11e.
The inner pole 11a protrudes perpendicularly from the center of the bottom 11e with respect to the bottom 11e. The outer pole 11b protrudes from the edge of the bottom 11e in the same direction as the inner pole 11a. The outer pole 11b surrounds the inner pole 11a with a space from the inner pole 11a. Thus, an annular bobbin insertion groove 11c is provided between the inner pole portion 11a and the outer pole portion 11 b.
The bobbin 12 is disposed in the bobbin insertion groove 11c. The bobbin 12 is fixed to the core 11 by an adhesive or a plurality of screws. The bobbin 12 is made of, for example, resin.
The bobbin 12 includes a cylindrical portion 12a, a 1 st flange portion 12b, and a 2 nd flange portion 12c. The 1 st flange portion 12b is provided at the 1 st end of the cylindrical portion 12a. The 2 nd flange portion 12c is provided at the 2 nd end of the cylindrical portion 12a.
The inner pole 11a is inserted into the cylindrical portion 12a. A gap is provided between the inner pole portion 11a and the cylindrical portion 12a.
The end surface of the 1 st flange portion 12b on the opposite side from the 2 nd flange portion 12c, the end surface of the inner pole portion 11a on the opposite side from the bottom portion 11e, and the end surface of the outer pole portion 11b on the opposite side from the bottom portion 11e are located on the same plane.
The end surface of the 2 nd flange portion 12c opposite to the 1 st flange portion 12b is in contact with the bottom portion 11e. Gaps are provided between the 1 st flange portion 12b and the outer pole portion 11b, and between the 2 nd flange portion 12c and the outer pole portion 11 b.
The electromagnetic coil 13 is formed of an electric wire 14 wound around the cylindrical portion 12a. The insulating tape 15 is wound around the outer periphery of the electromagnetic coil 13. As the insulating tape 15, for example, a glass tape is used.
The electric wire 14 has a 1 st lead-out portion 14a and a 2 nd lead-out portion 14b. The 1 st lead portion 14a and the 2 nd lead portion 14b are led out from the electromagnetic coil 13.
The 1 st lead portion 14a is connected to a winding start portion of the electromagnetic coil 13. The 2 nd lead portion 14b is connected to a winding terminal portion of the electromagnetic coil 13.
An opening 11d is provided in a part of the outer pole 11 b. The opening 11d exposes the 1 st lead portion 14a and the 2 nd lead portion 14b to the outside of the outer electrode portion 11 b.
The 2 nd flange portion 12c is provided with a 1 st guide groove 12d and a 2 nd guide groove 12e at a portion facing the opening 11d. The 1 st guide groove 12d and the 2 nd guide groove 12e are provided on the surface of the 2 nd flange portion 12c facing the 1 st flange portion 12 b.
The 1 st lead portion 14a is inserted into and along the 1 st guide groove 12d. The 2 nd lead-out portion 14b is inserted into and along the 2 nd guide groove 12e.
As shown in fig. 3, when the electromagnet 7 is viewed from a direction perpendicular to the suction surface, a part of the 1 st guide groove 12d overlaps the electromagnetic coil 13.
Fig. 5 is a front view showing an enlarged main portion of fig. 4. The 1 st guide groove 12d has a deep groove portion 21 and an inclined portion 22. The inclined portion 22 is located between the electromagnetic coil 13 and the deep groove portion 21.
The depth of the inclined portion 22 continuously increases from the electromagnetic coil 13 toward the deep groove portion 21. The depth of the deep groove portion 21 is constant over the entire length. The 2 nd guide groove 12e also has a deep groove portion 21 and an inclined portion 22 in the same manner as the 1 st guide groove 12d.
In the electromagnet 7, the 1 st guide groove 12d and the 2 nd guide groove 12e are provided in the portion of the 2 nd flange portion 12c facing the opening 11d. Therefore, the 1 st lead portion 14a and the 2 nd lead portion 14b can be easily positioned, and the positional deviation between the 1 st lead portion 14a and the 2 nd lead portion 14b is suppressed.
This can reduce the width of the opening 11d, suppress the area reduction of the outer pole 11b, and suppress the reduction of the attraction capability of the electromagnet 7 while preventing dielectric breakdown. Further, the electromagnetic brake 6 can be miniaturized and the elevator hoisting machine can be miniaturized.
Further, the movement of the 1 st lead-out portion 14a and the 2 nd lead-out portion 14b is suppressed against the vibration of the elevator hoisting machine, and the damage of the electric wire 14 can be suppressed.
Further, when the insulating tape 15 is wound around the outer periphery of the electromagnetic coil 13, the outer periphery of the electromagnetic coil 13 is prevented from being exposed due to the winding of the insulating tape 15 by the 1 st lead-out portion 14a and the 2 nd lead-out portion 14b. This can suppress a decrease in the insulating performance of the electromagnet 7.
The 1 st guide groove 12d and the 2 nd guide groove 12e are provided with inclined portions 22, respectively. Therefore, the 1 st lead-out portion 14a can be gently brought along the 1 st guide groove 12d, and the 2 nd lead-out portion 14b can be gently brought along the 2 nd guide groove 12e, and damage to the 1 st lead-out portion 14a and the 2 nd lead-out portion 14b can be suppressed.
Embodiment 2
Next, fig. 6 is a plan view showing a main portion of the electromagnet 7 according to embodiment 2. The 1 st guide groove 12d has a groove main portion 23 and an outlet portion 24. The outlet portion 24 is located at the end of the 1 st guide groove 12d on the opening 11d side. The slot main portion 23 is located between the outlet portion 24 and the electromagnetic coil 13.
The outlet portion 24 has a width greater than the width of the groove main portion 23. That is, the width of the groove main portion 23 is smaller than the width of the outlet portion 24. Although not shown in fig. 6, the inclined portion 22 is provided in the groove main portion 23. The outlet portion 24 is provided in the deep groove portion 21. The 2 nd guide groove 12e also has a groove main portion 23 and an outlet portion 24 similarly to the 1 st guide groove 12d.
The electromagnet 7 of embodiment 2 has a pair of insulating protection pipes 25 in addition to the same configuration as that of embodiment 1. The 1 st lead portion 14a passes through one of the pair of insulating protection pipes 25. The 2 nd lead portion 14b passes through the other of the pair of insulating protection pipes 25.
The electromagnetic coil 13 side end of each insulating protection tube 25 is inserted into the outlet portion 24. The width of the groove main portion 23 is smaller than the outer diameter of each insulating protection tube 25. The outlet portion 24 has a width larger than the outer diameter of each insulating protection tube 25.
Except for the configuration shown in fig. 6, the electromagnet 7, the electromagnetic brake 6, and the elevator hoisting machine are configured in the same manner as in embodiment 1.
In such an electromagnet 7, the width of the slot main portion 23 is smaller than the width of the outlet portion 24. Therefore, when the insulating protection pipes 25 are pushed into the outlet portion 24, the distal ends of the insulating protection pipes 25 are caught by the boundary portion between the outlet portion 24 and the groove main portion 23, and the insulating protection pipes 25 can be easily positioned. This prevents excessive entry and falling of each insulating protection tube 25, and improves productivity and insulating performance of the electromagnet 7.
The planar shapes of the core 11 and the electromagnetic coil 13 are not limited to rectangular, and may be circular or oblong, for example.
In addition, either one of the 1 st guide groove 12d and the 2 nd guide groove 12e may be omitted.
The inner pole 11a and the outer pole 11b may be formed of different members.
The electromagnetic brake 6 may be disposed inside the brake drum 5.
The electromagnetic brake 6 may be of a type that brakes the rotation of the brake disc.
The electromagnetic brake 6 may be provided in a device other than the elevator hoisting machine.
The electromagnet 7 may be provided in a device other than the electromagnetic brake 6.
Claims (4)
1. An electromagnet, wherein the electromagnet comprises:
a bobbin having a cylindrical portion and a flange portion;
an electromagnetic coil formed of an electric wire wound around the cylindrical portion; and
an iron core having an inner pole portion inserted into the cylindrical portion and an outer pole portion surrounding the bobbin, the electric wire having a lead-out portion led out from the electromagnetic coil,
an opening is provided in the outer pole portion, the opening exposing the lead-out portion to the outside of the outer pole portion, a guide groove along which the lead-out portion is provided in a portion of the flange portion facing the opening, the electromagnet further includes an insulating protection tube through which the lead-out portion passes,
the guide groove has a groove main portion and an outlet portion,
the outlet portion is located at an end portion of the guide groove on the opening side,
the slot main portion is located between the outlet portion and the electromagnetic coil,
the width of the groove main portion is smaller than the width of the outlet portion,
an end portion of the insulating protection tube on the electromagnetic coil side is inserted into the outlet portion.
2. The electromagnet of claim 1, wherein,
the guide groove has a deep groove portion and an inclined portion,
the inclined portion is located between the electromagnetic coil and the deep groove portion,
the depth of the inclined portion continuously increases from the electromagnetic coil toward the deep groove portion.
3. An electromagnetic brake, wherein,
the electromagnetic brake is provided with the electromagnet according to claim 1 or 2.
4. An elevator traction machine, wherein,
the elevator traction machine is provided with the electromagnetic brake of claim 3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-035909 | 2021-03-08 | ||
| JP2021035909A JP7034350B1 (en) | 2021-03-08 | 2021-03-08 | Electromagnetic magnets, electromagnetic brakes, and elevator hoisting machines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115030973A CN115030973A (en) | 2022-09-09 |
| CN115030973B true CN115030973B (en) | 2024-02-09 |
Family
ID=81213446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110671436.3A Active CN115030973B (en) | 2021-03-08 | 2021-06-17 | Electromagnet, electromagnetic brake and elevator traction machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7034350B1 (en) |
| CN (1) | CN115030973B (en) |
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| JPH0613361U (en) * | 1992-07-13 | 1994-02-18 | 株式会社安川電機 | Rotating electric machine |
| EP0821176A1 (en) * | 1996-07-23 | 1998-01-28 | Ogura Clutch Co., Ltd. | Electromagnetic coupling device |
| JP2000055083A (en) * | 1998-07-31 | 2000-02-22 | Ogura Clutch Co Ltd | Device for exciting electromagnetic coupling device |
| JP2011190846A (en) * | 2010-03-12 | 2011-09-29 | Mitsubishi Electric Corp | Electromagnetic brake device |
| CN206148203U (en) * | 2016-11-04 | 2017-05-03 | 安徽创新电磁离合器有限公司 | Clutch coil skeleton |
| JP2017199884A (en) * | 2016-04-28 | 2017-11-02 | 富士電機機器制御株式会社 | Spool and electromagnetic contactor |
| WO2018207347A1 (en) * | 2017-05-12 | 2018-11-15 | 三菱電機株式会社 | Elevator hoist brake and elevator hoist |
| CN109935448A (en) * | 2017-12-18 | 2019-06-25 | Tdk株式会社 | Coil device |
| CN110571013A (en) * | 2019-08-09 | 2019-12-13 | 珠海格力电器股份有限公司 | Electromagnetic assembly of brake, brake and motor |
| CN211181913U (en) * | 2019-10-09 | 2020-08-04 | 浙江盾安禾田金属有限公司 | Winding device |
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| CN112242223A (en) * | 2019-07-19 | 2021-01-19 | 株式会社村田制作所 | Inductor |
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| US5774036A (en) * | 1995-06-30 | 1998-06-30 | Siemens Electric Limited | Bobbin-mounted solenoid coil and method of making |
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2021
- 2021-03-08 JP JP2021035909A patent/JP7034350B1/en active Active
- 2021-06-17 CN CN202110671436.3A patent/CN115030973B/en active Active
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| JPH0613361U (en) * | 1992-07-13 | 1994-02-18 | 株式会社安川電機 | Rotating electric machine |
| EP0821176A1 (en) * | 1996-07-23 | 1998-01-28 | Ogura Clutch Co., Ltd. | Electromagnetic coupling device |
| JP2000055083A (en) * | 1998-07-31 | 2000-02-22 | Ogura Clutch Co Ltd | Device for exciting electromagnetic coupling device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN115030973A (en) | 2022-09-09 |
| JP7034350B1 (en) | 2022-03-11 |
| JP2022136356A (en) | 2022-09-21 |
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