Brake motor

Abstract

This utility model relates to a brake motor, which includes an electric motor with an electromagnetically operable braking device. The brake motor is provided with an adapter ring. A first axial end region of the adapter ring is fitted onto the cylindrical outer peripheral region of the magnet of the braking device. Another axial end region of the adapter ring is fitted onto the cylindrical outer peripheral region of the bearing cover of the motor. The bearing cover receives a bearing for rotatably supporting the rotor shaft of the motor. The adapter ring radially surrounds the armature plate and the brake block support of the braking device. The adapter ring aligns the braking device with the stator of the motor and defines a gap region for the brake block support and the armature plate. And / or the adapter ring serves as a magnetic shield between the bearing cover and the magnet.

Description

Technical Field

[0001] This utility model relates to a brake motor, which includes an electric motor with an electromagnetically operable braking device. Background Technology

[0002] As is well known, in electromagnetically operated brakes, magnetic flux is guided through the magnet, and leakage flux reduces the brake's efficiency. Utility Model Content

[0003] Therefore, the purpose of this invention is to improve an electromagnetically operated brake, which should achieve a highly efficient operating mode.

[0004] According to this invention, this objective is achieved by a brake motor having the following features.

[0005] In terms of a brake motor having an electromagnetically operable braking device, the key feature of this invention is that the adapter ring of the brake motor, particularly the first axial end region of the adapter ring viewed parallel to its ring axis, is fitted onto the outer peripheral region of the magnet of the braking device, which has a cylindrical structure on the magnet.

[0006] The adapter ring, particularly the other axial end region of the adapter ring, is fitted onto the outer peripheral region of the bearing cap of the motor, which has a cylindrical structure.

[0007] The advantage here is that the bearing cover and the magnet, and thus especially the motor and brake, can be aligned. High precision in brake motor manufacturing can be achieved through concentric orientation. Furthermore, by implementing the adapter ring separately from the magnet, material selection can be made to improve operational efficiency, because if the adapter ring material is appropriately chosen, the magnetic flux flowing in the magnet will not enter the adapter ring.

[0008] In an advantageous design, a bearing for rotatably supporting the motor rotor shaft is housed within the bearing cover. The advantage here is that the motor bearing cover is connected to the stator housing, which is connected to a bearing flange on the side of the stator housing opposite to the bearing cover, and a second bearing for the rotor shaft is housed within the bearing flange.

[0009] In an advantageous design, the adapter ring, particularly its first end face, abuts against a step formed on the magnet.

[0010] In particular, the stepped portion is formed on the axial end of the cylindrical outer peripheral region of the magnet. This has the advantage of enabling precise alignment of the magnet with the brake, and consequently, precise alignment of the brake with the motor.

[0011] In an advantageous design, the adapter ring, particularly the second end face of the adapter ring, abuts against the stepped portion formed on the bearing cap.

[0012] In particular, the stepped portion on the bearing cover is formed on the axial end of the cylindrical outer peripheral region of the bearing cover. The advantage here is that it enables precise alignment of the magnet with the brake, and consequently, precise alignment of the brake with the motor.

[0013] In a favorable design, the adapter ring is a hollow cylindrical shape.

[0014] In particular, the two end faces of the adapter ring, especially when viewed in the axial direction, are oriented parallel to each other and / or are made flat. The advantage here is that it allows for simple manufacturing.

[0015] In an advantageous design, the adapter ring aligns the brake with the stator of the motor and defines the gap area for the brake block support and armature plates. The advantage here is that the adapter ring defines the gap area for the armature plates, i.e., the working air gap.

[0016] In an advantageous design, the adapter ring serves as a magnetic shield between the bearing cap and the magnet. The advantage here is that the adapter ring is shaped to form a housing, thus serving not only as a magnetic shield or barrier but also as a component forming the housing.

[0017] In an advantageous design, the adapter ring is made of a metallic material. The advantage here is that the adapter ring can be made of a non-magnetic material or a material with only slight ferromagnetism / weak ferromagnetism.

[0018] In an advantageous design, a first sealing ring is arranged between the adapter ring and the magnet, specifically, this first sealing ring seals towards the inner edge of the stepped portion formed on the magnet. This has the advantage of protecting the internal space of the brake from contaminants entering from the environment.

[0019] In one advantageous design, a second sealing ring is arranged between the adapter ring and the bearing cap.

[0020] In particular, the second sealing ring seals against the inner edge of the stepped portion formed on the bearing cap. This has the advantage of protecting the internal space of the brake from contaminants entering from the environment.

[0021] In an advantageous design, the magnet is made of a ferromagnetic material, and / or the armature is made of a ferromagnetic material, and / or the bearing cover is made of a ferromagnetic material. The advantage here is that the magnetic field of the coil winding, particularly the toroidal winding, can be conducted by the magnet, and thus the inner and outer poles provided by the magnet can be magnetically connected to each other via the armature.

[0022] In one advantageous design, the adapter ring is made of a different material than the magnet.

[0023] In particular, the adapter ring is made of a different material than the armature plate, and / or the adapter ring is made of a different material than the bearing cap. The advantage here is that the adapter ring can be used as a magnetic shield because it is made of a different material.

[0024] In a favorable design, the adapter ring is made of a diamagnetic material. The advantage here is that the adapter ring acts as a magnetic shield, i.e., it is non-magnetic.

[0025] In an advantageous design, the specific permeability / relative permeability of the adapter ring material is (speczifischemagnetische) The specific permeability / relative permeability should not exceed one percent of the lower of the armature material and / or the magnet material. The advantage here is that the adapter ring essentially acts as a magnetic barrier.

[0026] In an advantageous design, the adapter ring is made of stainless steel, particularly non-magnetic stainless steel. This allows for low-cost manufacturing.

[0027] In an advantageous design, the adapter ring has radially through notches spaced apart from each other, particularly evenly spaced, in the circumferential direction. The advantage here is that these notches can serve as inspection windows. Here, the operating air gap of the braking device, i.e., the free movement clearance provided to the armature plates, can be observed and / or determined. Preferably, the notches can be covered and / or sealed, particularly by corresponding covers.

[0028] In an advantageous design, the adapter ring radially surrounds the armature plate and brake block support of the braking device. The advantage here is that the inspection window allows direct observation of the working air gap.

[0029] In an advantageous design, the brake block support and the rotor shaft are arranged in a manner that prevents relative rotation but allows axial movement. Specifically, the internal teeth of the brake block support are fitted onto and mesh with the external teeth of the drive component. The annular drive component is fitted onto the rotor shaft of the brake motor and connected to the rotor shaft in a manner that prevents relative rotation, particularly via a key connection.

[0030] The armature plate and the magnet are connected in a manner that prevents relative rotation but allows movement in the axial direction. The armature plate is arranged axially between the magnet and the brake block support.

[0031] The elastic / spring element supported on the magnet presses against the armature plate.

[0032] The energized toroidal winding is housed within a recess, particularly a toroidal one, of the magnet.

[0033] In particular, the ring axis of the toroidal winding is coaxial with the rotation axis of the rotor shaft. This has the advantage that, when power is off or switched off, the elastic force / spring force generated by the elastic element presses the armature against the brake block support, causing the brake block support to press against the brake surface formed on the bearing cap, thus engaging the braking device. To release this, energize the toroidal winding, thereby attracting the armature towards the magnet.

[0034] In one advantageous design, a braking surface is formed on the bearing cap.

[0035] When the toroidal winding is not energized, the first brake block, which is arranged on both sides of the brake block support axially, is pressed against the brake surface, while the armature plate is pressed by the elastic element onto the other brake block, which is also arranged on both sides of the brake block support axially.

[0036] In particular, when the toroidal winding is energized, the armature is pulled toward the magnet against the elastic force generated by the elastic element. An advantage here is that the braking device is aligned with the bearing cap of the brake motor, and especially the motor itself, via the adapter ring.

[0037] This invention is not limited to the above-described combination of features. Those skilled in the art, particularly from the perspective of the intended purpose and / or by comparison with the prior art, can deduce other reasonable combinations of the above-described combination of features and / or individual features described above and / or features described below and / or features in the accompanying drawings. Attached Figure Description

[0038] The present invention will now be described in detail with reference to the schematic diagram:

[0039] Figure 1 This is a perspective view of the brake motor of this utility model.

[0040] Figure 2 The corresponding sectional view is shown, with an additional enlarged view of a portion.

[0041] Figure 3 An oblique view of the magnet 2 of the brake motor is shown.

[0042] Figure 4 An oblique view of the adapter ring 1 of the brake motor is shown.

[0043] List of reference numerals in the attached diagram:

[0044] 1. Adapter ring

[0045] 2 Magnets

[0046] 3. Bearing cover

[0047] 4. Coil windings, especially toroidal windings

[0048] 5. Armature plate

[0049] 6 Brake block bracket

[0050] 7 bearings

[0051] 8 Angle Sensors

[0052] 9. Rotor shaft

[0053] 10. Ring-shaped drive component

[0054] 40 through gaps Detailed Implementation

[0055] As shown in the figure, the electric motor has a bearing cover 3, and a bearing 7 is received in the bearing cover 3. The bearing 7 is mounted on the rotor shaft 9 of the electric motor.

[0056] An annular drive member 10 is fitted onto the rotor shaft 9, which is thus rotatably supported. This drive member is connected to the rotor shaft in a manner that prevents relative rotation. The drive member 10 is designed with external teeth.

[0057] In particular, the disc-shaped brake block bracket 6 is pushed onto the drive member, and the internal teeth of the brake block bracket mesh with the external teeth of the drive member. Therefore, the brake block bracket 6 and the drive member 10 are connected in a manner that prevents relative rotation and are arranged in a manner that allows axial movement.

[0058] The brake block bracket 6 has brake blocks on both sides of the axial direction.

[0059] The annular axis of the drive component 10 is coaxial with the rotation axis of the rotor shaft 9.

[0060] The magnet 2 of the brake motor has an annular recess in which the coil winding 4 (especially the annular winding) is received.

[0061] The annular axis of the recess or the winding axis of the coil winding 4 (especially the annular axis of the ring winding) is coaxial with the rotation axis of the rotor shaft 9.

[0062] The adapter ring 1 is arranged between the bearing cover 3 and the magnet 2, and the adapter ring 1 defines the distance between the bearing cover 3 and the magnet 2.

[0063] For this purpose, the adapter ring 1 is fitted onto the magnet 2 and abuts against an annular groove that is radially open to the outside and surrounds the axis of rotation of the rotor shaft. This means that the adapter ring 1 is fitted onto the cylindrical outer peripheral region of the magnet 2, and the first axial end region of the adapter ring, in particular the first end face of the adapter ring, abuts against the step portion formed on the magnet 2.

[0064] The adapter ring 1 itself is designed as a hollow cylindrical component and has radially penetrating notches 40 spaced apart from each other, especially equidistantly spaced, in the circumferential direction. These notches are preferably designed to be used as inspection windows.

[0065] The adapter ring 1 is also fitted onto the cylindrical outer peripheral area of ​​the bearing cover 3 and abuts against the stepped portion formed on the bearing cover 3.

[0066] A first sealing ring disposed between the adapter ring 1 and the bearing cover 3 seals the internal space of the brake motor relative to the environment, or at least contributes to the sealing. Similarly, a second sealing ring disposed between the adapter ring 1 and the magnet 2 seals the internal space of the brake motor relative to the environment, or at least contributes to the sealing.

[0067] The rotor shaft 9 extends into the axially penetrating annular opening of the magnet 2, and the rotor of the angle sensor is connected to the rotor shaft 9 in a manner that prevents relative rotation. The stator of the angle sensor is connected to the magnet 2 and covers the annular opening.

[0068] The elastic element supported in the magnet 2 presses against the armature plate 5, which is arranged axially between the brake block bracket 6 and the magnet 2. The armature plate is arranged in a manner that it cannot rotate relative to the magnet 2 but can move axially relative to the magnet 2.

[0069] Therefore, the elastic force introduced into the armature plate 5 by the elastic element points towards the brake block bracket 6 in the axial direction.

[0070] The armature plate 5 is arranged axially between the brake block support 6 and the magnet 2 and / or between the brake block support 6 and the coil winding, particularly the toroidal winding, which is received in the magnet 2.

[0071] When current is applied to the coil winding, the armature 5 is pulled toward the magnet 2 against the elastic force generated by the elastic element. When the coil winding is not energized, the elastic element presses the armature 5 onto the brake block bracket 6, and the brake block bracket is thus pressed against the brake surface formed on the bearing cover 3.

[0072] Preferably, the braking surface is ground.

[0073] The adapter ring 1 is preferably made of a different material than the magnet 2. The magnet 2 is preferably made of a ferromagnetic material. The armature plate 5 is also made of a ferromagnetic material.

[0074] The adapter ring 1 is preferably made of a diamagnetic material, or at least of a material whose specific permeability is not higher than one percent of the specific permeability of the material of the armature piece 5 and / or the material of the magnet 2.

[0075] The adapter ring 1 is preferably made of stainless steel, especially non-magnetic stainless steel.

[0076] The adapter ring 1 is preferably used as a magnetic shield, especially as a magnetic shield in alternating magnetic fields.

[0077] The armature 5 is radially surrounded by the adapter ring 1, particularly in the circumferential direction, where it is continuously surrounded and / or completely surrounded. Therefore, on the radially outer side of the coil winding, magnetic flux flows from the magnet 2 into the armature 5 in the axial direction, while on the radially inner side of the coil winding, magnetic flux flows from the armature 5 into the magnet 2 in the opposite direction to the axial direction. This allows the armature 5 to operate more efficiently. It also prevents possible residual magnetism in the adapter ring 1, and consequently prevents radial flow of magnetic flux into the armature 5.

[0078] The working status can also be directly monitored through the through-hole 40. Furthermore, the working air gap, i.e., the free clearance provided by the adapter ring 1 for the armature plate 5 and the brake block bracket, can be measured through one of the notches 40 by inserting a measuring tool through the notch 40 into the working air gap, without disassembling the braking device to measure the working air gap.

[0079] Magnet 2 is preferably designed as a ductile iron casting, especially GGG.

[0080] According to this invention, the adapter ring 1 abuts against both the stop portion on the magnet 2 and the stop portion on the bearing cover 3. Since the adapter ring 1 is designed as a hollow cylinder that fits onto the cylindrical outer periphery of the magnet 2 on one side and the cylindrical outer periphery of the bearing cover 3 on the other, the adapter ring 1 aligns the brake relative to the stator of the motor and defines the gap area for the brake block support 6 and the armature plate 5. In particular, the two parallel-oriented end faces of the adapter ring 1 abut against the two coaxially and parallel-oriented stop portions. Therefore, the adapter ring 1 achieves concentricity of these components.

[0081] To connect magnet 2 to bearing cover 3, a screw that passes through magnet 2 is used.

[0082] The bearing cover 3 can be made of ferromagnetic material without interfering with the working state of the armature plate 5, because the adapter ring 1 is arranged between them as a magnetic shield and plays a role.

[0083] In other embodiments of this invention, the notch 40 is covered and thus sealed. This has the advantage that dirt cannot enter through the notch 40.

Claims

1. A brake motor, the brake motor comprising an electric motor with an electromagnetically operable braking device, Its features are, The brake motor is equipped with an adapter ring. Viewed parallel to the ring's axis, the first axial end region of the adapter ring is fitted onto the cylindrical outer peripheral region of the magnet in the braking device. The other axial end region of the adapter ring is fitted onto the cylindrical outer peripheral region of the motor's bearing cover, which houses a bearing for rotatably supporting the motor's rotor shaft. The adapter ring radially surrounds the armature plate and brake block support of the braking device on the outer side. The adapter ring aligns the braking device with the stator of the motor and defines a clearance area for the brake block support and armature plates, and / or The adapter ring serves as a magnetic shield between the bearing cover and the magnet.

2. The brake motor according to claim 1, Its features are, The first end face of the adapter ring abuts against the stepped portion formed on the magnet. The stepped portion is formed on the axial end of the outer peripheral region of the magnet, which has a cylindrical structure.

3. The brake motor according to claim 2, Its features are, The second end face of the adapter ring abuts against the stepped portion formed on the bearing cap. The stepped portion on the bearing cap is formed on the axial end of the outer peripheral region of the cylindrical structure of the bearing cap.

4. The brake motor according to claim 3, Its features are, The adapter ring is a hollow cylindrical shape. The two end faces of the adapter ring, viewed in the axial direction, are parallel to each other and / or designed to be flat.

5. The brake motor according to any one of claims 1 to 4, Its features are, The adapter ring is made of metal.

6. The brake motor according to claim 3, Its features are, A first sealing ring is arranged between the adapter ring and the magnet, and the first sealing ring seals towards the inner edge of the stepped portion formed on the magnet. and / or A second sealing ring is arranged between the adapter ring and the bearing cap, and the second sealing ring is sealed towards the inner edge of the step portion formed on the bearing cap.

7. The brake motor according to any one of claims 1 to 4, Its features are, The magnet is made of ferromagnetic material. And / or the armature plate is made of ferromagnetic material, And / or the bearing cover is made of ferromagnetic material.

8. The brake motor according to any one of claims 1 to 4, Its features are, The adapter ring is made of a different material than the magnet. The adapter ring is made of a different material than the armature plate, and / or the adapter ring is made of a different material than the bearing cap.

9. The brake motor according to any one of claims 1 to 4, Its features are, The adapter ring is made of antimagnetic material.

10. The brake motor according to any one of claims 1 to 4, Its features are, The specific permeability of the adapter ring material is no higher than one percent of the specific permeability of the armature material and / or the magnet material. and / or The adapter ring is made of non-magnetic stainless steel.

11. The brake motor according to any one of claims 1 to 4, Its features are, The adapter ring has radially through notches spaced apart from each other in the circumferential direction.

12. The brake motor according to any one of claims 1 to 4, Its features are, The brake block bracket is arranged relative to the rotor shaft in a manner that prevents relative rotation but allows axial movement. The internal teeth of the brake block bracket are fitted onto and mesh with the external teeth of the annular drive component. The drive component is fitted onto the rotor shaft of the brake motor and connected to the rotor shaft in a manner that prevents relative rotation. The drive component and the rotor shaft are connected by a key. The armature plate and the magnet are connected in a manner that prevents relative rotation but allows movement in the axial direction. The armature plate is arranged axially between the magnet and the brake block support. The elastic element supporting the magnet presses against the armature plate. The energized toroidal winding is housed within the annular recess of the magnet. The axis of the annular winding is coaxial with the axis of rotation of the rotor shaft.

13. The brake motor according to claim 12, Its features are, A braking surface is formed on the bearing cap. When the toroidal winding is not energized, the first brake block among the brake blocks arranged on the brake block supports on both axial sides is pressed against the brake surface, while the armature sheet is pressed by the elastic element against the other brake block among the brake blocks arranged on the brake block supports on both axial sides. When the toroidal winding is energized, the armature piece overcomes the elastic force generated by the elastic element and is attracted to the magnet.

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