CN115030973A - Electromagnet, electromagnetic brake, and elevator hoist - Google Patents
Electromagnet, electromagnetic brake, and elevator hoist Download PDFInfo
- Publication number
- CN115030973A CN115030973A CN202110671436.3A CN202110671436A CN115030973A CN 115030973 A CN115030973 A CN 115030973A CN 202110671436 A CN202110671436 A CN 202110671436A CN 115030973 A CN115030973 A CN 115030973A
- Authority
- CN
- China
- Prior art keywords
- electromagnet
- lead
- guide groove
- electromagnetic coil
- electromagnetic
- 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.)
- Granted
Links
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000009413 insulation Methods 0.000 description 6
- 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
- 238000004804 winding 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
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
- Electromagnets (AREA)
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 capacity. An opening (11d) is provided in a part of the outer pole section (11 b). The opening (11d) exposes the 1 st lead-out portion (14a) and the 2 nd lead-out portion (14b) to the outside of the external pole portion (11 b). A1 st guide groove (12d) and a 2 nd guide groove (12e) are provided in a portion of the 2 nd flange section (12c) facing the opening (11 d). The 1 st lead-out portion (14a) is inserted along the 1 st guide groove (12 d). The 2 nd lead-out part (14b) is inserted along the 2 nd guide groove (12 e).
Description
Technical Field
The invention relates to an electromagnet, an electromagnetic brake and an elevator hoist.
Background
In the electromagnet of the conventional brake device, the 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 bobbin. The bobbin is provided with a brake coil.
The brake coil is formed of a coil wire. Both end portions of the coil wire are drawn out from the brake coil as a pair of drawn-out portions. The outer pole core is provided with a notch for drawing out the pair of lead-out portions to the outside of the outer pole core (see, for example, patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2014-190531
In the conventional electromagnet as described above, the positions of the pair of lead portions are deviated depending on the brake coil. Further, when at least one of the pair of lead-out portions comes into contact with the outer pole core, insulation breakdown may occur between the coil wire and the outer pole core. Therefore, the notch needs to be enlarged, 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 thereof is to obtain an electromagnet, an electromagnetic brake, and an elevator hoisting machine, which can suppress a decrease in suction capacity.
The electromagnet of the present 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 a core having an inner pole portion inserted into the cylindrical portion and an outer pole portion surrounding the bobbin, wherein the wire has a lead-out portion led out from the electromagnetic coil, the outer pole portion is 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 guided is provided in a portion of the flange portion facing the opening.
Effects of the invention
According to the present invention, a decrease in the attraction ability 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 showing the elevator traction machine of fig. 1.
Fig. 3 is a plan 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 a main part of fig. 4 in an enlarged manner.
Fig. 6 is a plan view showing a main part of an electromagnet according to embodiment 2.
Description of the reference symbols
6: an electromagnetic brake; 7: an electromagnet; 11: an iron core; 11 a: an inner pole portion; 11 b: an outer pole portion; 11 d: an opening; 12: a bobbin; 12 a: a cylindrical portion; 12 c: a 2 nd flange portion; 12 d: 1 st guide groove; 12 e: a 2 nd guide groove; 13: an electromagnetic coil; 14: an electric wire; 14 a: the 1 st lead-out part; 14 b: 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: an insulating protection tube.
Detailed Description
Hereinafter, embodiments will be described with reference to the drawings.
Embodiment mode 1
Fig. 1 is a front view showing an elevator hoisting machine according to embodiment 1. Fig. 2 is a side view showing the elevator traction machine of fig. 1. In the figure, an elevator hoisting machine has a housing 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 main shaft 2 is horizontally fixed to the housing 1. The drive sheave 3 is supported by the main shaft 2. The drive sheave 3 rotates about 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 from the suspension body. The car and the counterweight are raised 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 about the main shaft 2.
A pair of electromagnetic brakes 6 are attached to the housing 1. The pair of electromagnetic brakes 6 is disposed radially outward of the brake drum 5. The pair of electromagnetic brakes 6 holds 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 5 a. The braking surface 5a is an outer peripheral surface of the brake drum 5.
The brake spring generates a force that presses the brake shoe 9 against the braking surface 5 a. 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 brake spring. Thereby, the brake shoe 9 is separated from the braking surface 5 a.
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 attracting surface of the attracting armature 8 is the upper surface in fig. 4.
The electromagnet 7 includes an iron core 11, a bobbin 12, an electromagnetic coil 13, and an insulating tape 15.
The iron core 11 is made of iron, for example. The core 11 has an inner pole portion 11a, an outer pole portion 11b, and a flat plate-shaped bottom portion 11 e.
The inner pole portion 11a protrudes perpendicularly from the center of the bottom portion 11e with respect to the bottom portion 11 e. The outer pole 11b protrudes from the edge of the bottom 11e in the same direction as the inner pole 11 a. The outer pole 11b surrounds the inner pole 11a with a space therebetween. Thus, an annular bobbin insertion groove 11c is provided between the inner pole 11a and the outer pole 11 b.
The bobbin 12 is disposed in the bobbin insertion groove 11 c. 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 has a cylindrical portion 12a, a 1 st flange portion 12b, and a 2 nd flange portion 12 c. The 1 st flange portion 12b is provided at the 1 st end of the cylindrical portion 12 a. The 2 nd flange portion 12c is provided at the 2 nd end portion of the cylindrical portion 12 a.
The inner pole portion 11a is inserted into the cylindrical portion 12 a. A gap is provided between the inner pole portion 11a and the cylindrical portion 12 a.
An end surface of the 1 st flange portion 12b on the side opposite to the 2 nd flange portion 12c, an end surface of the inner pole portion 11a on the side opposite to the bottom portion 11e, and an end surface of the outer pole portion 11b on the side opposite to the bottom portion 11e are located on the same plane.
The end surface of the 2 nd flange portion 12c on the opposite side to the 1 st flange portion 12b is in contact with the bottom portion 11 e. Gaps are provided between the 1 st flange portion 12b and the external pole portion 11b, and between the 2 nd flange portion 12c and the external pole portion 11 b.
The electromagnetic coil 13 is formed of an electric wire 14 wound around the cylindrical portion 12 a. 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 wire 14 has a 1 st lead-out portion 14a and a 2 nd lead-out portion 14 b. 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-out portion 14a is connected to a winding start end portion of the electromagnetic coil 13. The 2 nd lead-out portion 14b is connected to a winding end portion of the electromagnetic coil 13.
An opening 11d is provided in a part of the outer pole portion 11 b. The opening 11d exposes the 1 st lead-out portion 14a and the 2 nd lead-out portion 14b to the outside of the external electrode portion 11 b.
A 1 st guide groove 12d and a 2 nd guide groove 12e are provided in a portion of the 2 nd flange portion 12c facing the opening 11 d. 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-out portion 14a is inserted along the 1 st guide groove 12 d. The 2 nd lead portion 14b is inserted along the 2 nd guide groove 12 e.
As shown in fig. 3, when the electromagnet 7 is viewed from the direction perpendicular to the attraction surface, a part of the 1 st guide groove 12d overlaps the electromagnetic coil 13.
Fig. 5 is a front view showing a main part of fig. 4 in an enlarged manner. The 1 st guide groove 12d has a deep groove portion 21 and an inclined portion 22. Inclined portion 22 is located between electromagnetic coil 13 and deep groove portion 21.
The depth of the inclined portion 22 becomes continuously deeper 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 the deep groove portion 21 and the inclined portion 22, similarly to the 1 st guide groove 12 d.
In the electromagnet 7, a 1 st guide groove 12d and a 2 nd guide groove 12e are provided in a portion of the 2 nd flange portion 12c facing the opening 11 d. Therefore, the 1 st lead-out portion 14a and the 2 nd lead-out portion 14b can be easily positioned, and the deviation between the position of the 1 st lead-out portion 14a and the position of the 2 nd lead-out portion 14b is suppressed.
This can reduce the width of the opening 11d, suppress a reduction in the area of the external pole portion 11b, and suppress a reduction in the suction capability of the electromagnet 7 while preventing insulation breakdown. Further, the electromagnetic brake 6 and the elevator hoisting machine can be downsized.
In addition, the 1 st and 2 nd lead-out portions 14a and 14b are prevented from moving against the vibration of the elevator hoisting machine, and damage to the electric wire 14 can be prevented.
Further, when the insulating tape 15 is wound around the outer periphery of the electromagnetic coil 13, the insulating tape 15 is prevented from being exposed to the outer periphery of the electromagnetic coil 13 due to the 1 st drawn portion 14a and the 2 nd drawn portion 14b being crimped. This can suppress a decrease in the insulating performance of the electromagnet 7.
In addition, 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 guided along the 1 st guide groove 12d, and the 2 nd lead-out portion 14b can be gently guided 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.
Next, fig. 6 is a plan view showing a main part of an electromagnet 7 according to embodiment 2. The 1 st guide groove 12d has a groove main portion 23 and an exit portion 24. The outlet portion 24 is located at the end portion 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 width of the outlet portion 24 is larger 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. Further, 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 exit portion 24, similarly to the 1 st guide groove 12 d.
The electromagnet 7 according to embodiment 2 has a pair of insulating protection pipes 25, in addition to having the same configuration as that of embodiment 1. The 1 st lead-out 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 end of each insulating protection tube 25 on the electromagnetic coil 13 side is inserted into the outlet portion 24. The width of the groove main portion 23 is smaller than the outer diameter of each insulation protection pipe 25. The width of the outlet portion 24 is larger than the outer diameter of each insulation protection pipe 25.
Except for the configuration shown in fig. 6, the configuration of the electromagnet 7, the electromagnetic brake 6, and the elevator hoisting machine is the same as that of embodiment 1.
In the electromagnet 7, the width of the groove main portion 23 is smaller than the width of the outlet portion 24. Therefore, when the insulating protection pipes 25 are press-fitted into the outlet portion 24, the ends of the insulating protection pipes 25 are caught by the boundary portion between the outlet portion 24 and the tank main portion 23, and the insulating protection pipes 25 can be easily positioned. This prevents the insulation protection pipes 25 from entering and falling off excessively, and improves the productivity and insulation performance of the electromagnet 7.
The planar shapes of the iron core 11 and the electromagnetic coil 13 are not limited to rectangular shapes, and may be circular or oval, for example.
In addition, any 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.
Further, the electromagnetic brake 6 may be of a type that brakes the rotation of a brake disk.
The electromagnetic brake 6 may be provided in a facility other than the elevator hoisting machine.
The electromagnet 7 may be provided in a device other than the electromagnetic brake 6.
Claims (5)
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
a 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,
the outer pole portion is provided with an opening for exposing the lead portion to the outside of the outer pole portion, and the flange portion is provided with a guide groove along which the lead portion is guided at a portion facing the opening.
2. The electromagnet of claim 1,
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 becomes continuously deeper from the electromagnetic coil toward the deep groove portion.
3. The electromagnet according to claim 1 or 2,
the electromagnet is also provided with an insulating protection tube for the leading-out part to pass through,
the guide groove has a groove main portion and an outlet portion,
the outlet portion is located at an end of the guide groove on the opening side,
the main portion of the slot is located between the outlet portion and the electromagnetic coil,
the width of the main portion of the slot is smaller than the width of the outlet portion,
the end portion of the insulating protection tube on the electromagnetic coil side is inserted into the outlet portion.
4. An electromagnetic brake, wherein,
the electromagnetic brake is provided with the electromagnet according to any one of claims 1 to 3.
5. An elevator traction machine, wherein,
the elevator hoisting machine is provided with the electromagnetic brake according to claim 4.
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 true CN115030973A (en) | 2022-09-09 |
| CN115030973B 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20050225418A1 (en) * | 2004-04-08 | 2005-10-13 | Truc Tran-Ngoc | Electromagnetic coil assembly |
| 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 |
| US20170287612A1 (en) * | 2016-04-05 | 2017-10-05 | Ogura Clutch Co., Ltd. | Seal structure for electromagnetic lead wire |
| 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 |
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| CN111755208A (en) * | 2019-03-28 | 2020-10-09 | 株式会社村田制作所 | Inductor and method for manufacturing the same |
| CN112242223A (en) * | 2019-07-19 | 2021-01-19 | 株式会社村田制作所 | Inductor |
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| JP2000083338A (en) * | 1998-09-04 | 2000-03-21 | Mitsubishi Electric Corp | Rotor of ac generator for vehicle |
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| CN108231323B (en) * | 2018-03-23 | 2024-08-30 | 宁波市鄞州通力液压电器厂 | Connection structure of coil framework and wiring post and installation method thereof |
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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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| 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 |
| US20050225418A1 (en) * | 2004-04-08 | 2005-10-13 | Truc Tran-Ngoc | Electromagnetic coil assembly |
| JP2011190846A (en) * | 2010-03-12 | 2011-09-29 | Mitsubishi Electric Corp | Electromagnetic brake device |
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| JP2017199884A (en) * | 2016-04-28 | 2017-11-02 | 富士電機機器制御株式会社 | Spool and electromagnetic contactor |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN115030973B (en) | 2024-02-09 |
| JP7034350B1 (en) | 2022-03-11 |
| JP2022136356A (en) | 2022-09-21 |
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