Permanent magnet band-type brake device
By passing the electromagnetic copper wire of the coil through the insulated housing and mechanically connecting it with the terminal in the permanent magnet locking device, the problem of unreliable electrical connection in the prior art is solved, and a simpler and more secure wiring method is achieved.
Patent Information
- Application Number
- CN202420748667.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-11
AI Technical Summary
The electrical connection method of the existing permanent magnet holding brake device is unreliable, and professionally trained staff requires connection, and there is a risk of insecure connection during use.
A permanent magnet holding brake device is designed, including a magnet frame, a coil and multiple terminals. The electromagnetic copper wire of the coil passes through the insulated shell, and the terminals correspond one by one to the electromagnetic copper wire. The wiring position is changed from the coil to the insulated shell. The mechanical connection method is adopted to increase contact points, simplify wiring actions and improve the firmness of the connection.
Reduces the difficulty and professional knowledge requirements of staff, avoids the risk of insolid connections, and makes wiring easier and more reliable.
Smart Images
Figure CN222169551U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electromagnetic brake equipment, in particular to a permanent magnet brake device. Background Art
[0002] The brake device is currently the main device for motor braking. Its main function is to fix the motor's rotor in a certain position through electromagnetic force when the motor stops rotating, so as to prevent the motor from rotating due to external forces. Among them, the electromagnetic force is formed by the interaction between the electromagnetic field generated by the current passing through the coil inside the brake device when it is connected to an external power supply and the surrounding objects.
[0003] At present, the power terminals of permanent magnet brake devices are all set at the coil and connected to the external power supply through the coil. However, this kind of wire connection requires professionally trained personnel to connect the coil, and the wire connection method has the risk of loose connection during later use. Utility Model Content
[0004] The utility model provides a permanent magnetic brake device to solve the problem of unreliable electrical connection mode of the permanent magnetic brake device in the prior art.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is to provide a permanent magnetic brake device, which includes: a magnet frame, a coil and a plurality of terminals.
[0006] An insulating shell is provided above the magnet skeleton along the first direction; the coil is located on the side of the magnet skeleton away from the insulating shell along the first direction, wherein the coil is provided with a plurality of electromagnetic copper wires toward the magnet skeleton, and the plurality of electromagnetic copper wires pass through the magnet skeleton along the first direction into the insulating shell.
[0007] The plurality of terminals are embedded in the insulating housing along the first direction and are fitted with the plurality of electromagnetic copper wires in a one-to-one correspondence.
[0008] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:
[0009] By setting an insulating shell above the magnet frame and passing the electromagnetic copper wire of the coil through the insulating shell, the wiring position is changed from the coil to the insulating shell, so that the wiring action of the staff can be performed outside the brake device.
[0010] Among them, multiple terminals are embedded in the insulating shell, and the terminals correspond to the electromagnetic copper wires one by one. The wiring action of the staff can be simplified to the plugging and unplugging of the terminals. Compared with the current need for staff to have professional electrical knowledge to connect wires, the ability requirements of the staff are lower. In addition, the terminal wiring method is a mechanical connection method, which increases the contact points and effectively avoids the risk of loose connection.
[0011] In some embodiments, the electromagnetic copper wire in the insulating housing is at least partially bent toward the terminal so that the electromagnetic copper wire is vertically connected to the terminal.
[0012] The magnet skeleton also has a plurality of guide holes connected to the insulating shell, wherein the guide holes are located on the outer ring side of the magnet skeleton, wherein the plurality of electromagnetic copper wires respectively pass through the magnet skeleton along the guide holes.
[0013] By adopting the above technical solution, a through hole for the electromagnetic copper wire to pass through and a cavity for embedding the terminal are provided in the insulating shell. The electromagnetic copper wire is bent in the cavity until the electromagnetic copper wire is vertically connected to the terminal. This method makes the connection between the terminal and the electromagnetic copper wire more secure, and it is not easy to be damaged or dislodged under external tension.
[0014] In addition, the electromagnetic copper wire passes through the magnet frame along the guide hole and extends to one side of the insulating shell, which makes it easy for the staff to bend the electromagnetic copper wire toward the terminal during assembly and also makes it easy for the staff to cut off the exposed electromagnetic copper wire.
[0015] In some embodiments, the permanent magnetic brake device further has a power connection, and the power connection is at least partially embedded in the insulating shell and electrically connected to the terminal.
[0016] The permanent magnetic brake device also includes a shell, which is provided with a square hole. The square hole is located above the magnet skeleton along the first direction, so that the insulating shell can pass through the square hole and be at least partially located outside the shell.
[0017] With the above technical solution, the power wiring includes a positive line connected to the positive pole of the power supply and a negative line connected to the negative pole of the power supply. The power wiring is electrically connected to the terminal so that the terminal can be connected to the positive pole and the negative pole of the power supply respectively.
[0018] In some embodiments, the permanent magnet brake device further includes a magnet core, which is fitted with the magnet skeleton along the first direction, wherein the magnet core has a slot, and the electromagnetic copper wire of the coil extends into the insulating shell along the slot.
[0019] At present, the routing method of the electromagnetic copper wire of the coil is: after passing through the coil, it passes through the magnetic core, and is bent on the side of the magnetic frame until it extends to the outside of the shell and connects to the motor power supply. The above technical solution is adopted to change the routing method of the electromagnetic copper wire so that it passes through the magnetic core and the magnetic frame in turn and is bent inside the insulating shell. In other words, the bending and wiring process inside the shell is changed to the outside of the shell, which effectively reduces the wiring difficulty of the staff.
[0020] In some embodiments, the permanent magnet brake device also includes a hub, which penetrates the magnet skeleton along the first direction, wherein the outer periphery of the hub is also sequentially sleeved with a plate spring and an armature plate, and the plate spring can deform and drive the armature plate to move along the first direction.
[0021] With the above technical solution, when the brake device is braking, the hub and the external device (such as the motor shaft of the motor) are pressed tightly by interference fit to eliminate the rotation backlash of the brake device.
[0022] In some embodiments, the leaf spring is connected to the hub and the armature plate at both sides along the first direction through rivets, respectively, wherein the rivets are further provided with toothed washers.
[0023] By adopting the above technical solution, a toothed washer is arranged on the riveted part to reduce looseness between the components.
[0024] In some embodiments, the magnet skeleton is further provided with a plurality of accommodating grooves along the first direction toward the coil side, and the accommodating grooves are circumferentially arranged on the magnet skeleton and are used to accommodate permanent magnets.
[0025] Furthermore, the magnet skeleton is also provided with a felt ring, and the felt ring is located on the inner ring side of the permanent magnet.
[0026] By adopting the above technical solution, the felt ring is located on the inner side of the magnet frame, which can effectively prevent external dust, oil and the like from polluting the internal permanent magnet. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, among which:
[0028] Figure 1 It is a cross-sectional view of an embodiment of a permanent magnetic brake device provided by the utility model;
[0029] Figure 2 This is a top view of an embodiment of a permanent magnetic brake device provided by the utility model;
[0030] Figure 3 yes Figure 2 A partial enlarged view of part A;
[0031] Figure 4 This is a terminal insertion schematic diagram of an embodiment of a permanent magnetic brake device provided by the utility model;
[0032] Figure 5 It is a three-dimensional structural schematic diagram of an embodiment of a magnet skeleton of a permanent magnetic brake device provided by the utility model;
[0033] Figure 6 It is a three-dimensional structural schematic diagram of an embodiment of a permanent magnetic brake device provided by the utility model;
[0034] Figure 7 The utility model is an exploded view of an embodiment of an electromagnetic brake device.
[0035] In the figure:
[0036] Magnet frame—10; insulating shell—11; guide hole—12; power supply connection—13; receiving slot—14; permanent magnet—15; felt ring—16; magnetic blocking ring—17
[0037] Coil—20; electromagnetic copper wire—21; terminal—30;
[0038] Shell—40; square hole—41; magnetic core—42; notch—420; hub—43; leaf spring—44; armature plate—45; rivet—46. DETAILED DESCRIPTION
[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0040] For the convenience of subsequent description, before describing the specific structure of the permanent magnetic brake device, this application first combines Figure 1 A first direction (Z) and a second direction (O) are defined, wherein the first direction is the height direction of the permanent magnetic brake device when it is normally placed, such as the Z direction; and the second direction is the radius direction of the permanent magnetic brake device when it is normally placed, such as the O direction.
[0041] See also Figure 1 As shown, Figure 1 A cross-sectional view of an embodiment of a permanent magnetic brake device provided by the present application is shown.
[0042] In some embodiments, the permanent magnet brake device includes: a magnet skeleton 10 , a coil 20 and a plurality of terminals 30 .
[0043] An insulating shell 11 is provided above the magnet skeleton 10 along the first direction; the coil 20 is located on the side of the magnet skeleton 10 away from the insulating shell 11 along the first direction, wherein the coil 20 is provided with a plurality of electromagnetic copper wires 21 toward the magnet skeleton 10, and the plurality of electromagnetic copper wires 21 penetrate the magnet skeleton 10 into the insulating shell 11 along the first direction; a plurality of terminals 30 are embedded in the insulating shell 11 along the first direction, and fit with the plurality of electromagnetic copper wires 21 one by one.
[0044] In the embodiment of the present application, an insulating shell 11 is provided above the magnet skeleton 10, and the electromagnetic copper wire 21 of the coil 20 is passed through the insulating shell 11, so that the wiring position is changed from the coil 20 to the insulating shell 11, so that the wiring action of the staff can be performed outside the brake device.
[0045] For example, currently the brake device is mostly used for braking the motor, and its coil 20 needs to be connected to the motor power supply terminal 13, so the staff is required to have professional electrical knowledge to connect the wires. By embedding multiple terminals 30 corresponding to the electromagnetic copper wires 21 in the insulating shell 11, the wiring action of the staff can be simplified to the plugging and unplugging action of the terminals 30, which effectively reduces the ability requirements for the staff.
[0046] In addition, the connection method of the terminal 30 is a mechanical connection method, which increases the contact points of the electromagnetic copper wire 21, thereby effectively avoiding the risk of loose connection. Exemplarily, the coil 20 uses enameled wire, and the terminal 30 is an enameled wire metal terminal.
[0047] See also Figures 2 to 3 As shown, Figure 2 A top view of an embodiment of a permanent magnetic brake device provided by the present application is shown; Figure 3 for Figure 2 A partial enlarged view of part A.
[0048] In some embodiments, the permanent magnetic brake device also includes a shell 40, which is provided with a square hole 41, and the square hole 41 is located above the magnet skeleton 10 along the first direction, so that the insulating shell 11 can pass through the square hole 41 and be at least partially located outside the shell.
[0049] Specifically, the electromagnetic copper wire 21 in the insulating housing 11 is at least partially bent toward the terminal 30 , so that the electromagnetic copper wire 21 is vertically connected to the terminal 30 .
[0050] Combination Figure 1 As shown, the insulating housing 11 is provided with a through hole for the electromagnetic copper wire 21 to pass through and a cavity for embedding the terminal 30. The electromagnetic copper wire 21 is bent at the cavity until the electromagnetic copper wire 21 is vertically connected to the terminal 30 (such as Figure 3 As shown), this method makes the connection between the terminal 30 and the electromagnetic copper wire 21 more secure, and it is not easy to be damaged or fall out under external tension.
[0051] See also Figure 4 As shown, Figure 4 A schematic diagram of inserting a terminal 30 of an embodiment of a permanent magnetic brake device provided by the present application is shown.
[0052] Exemplarily, the insertion steps of the terminal 30 are as follows: (1) the terminal 30 is embedded in the cavity of the insulating housing 11 by a dedicated terminal insertion pointer so that it fits tightly with the bent electromagnetic copper wire 21; (2) the burrs and the insulating film layer outside the electromagnetic copper wire 21 are peeled off by a trimming blade, and the exposed electromagnetic copper wire 21 is cut off.
[0053] See also Figure 5 As shown, Figure 5 A three-dimensional structural schematic diagram of an embodiment of a magnet skeleton 10 of a permanent magnet brake device provided in the present application is shown.
[0054] In some embodiments, the magnet skeleton 10 further has a plurality of guide holes 12 connected to the insulating shell 11 , and the guide holes 12 are located on the outer ring side of the magnet skeleton 10 , wherein a plurality of electromagnetic copper wires 21 pass through the magnet skeleton 10 along the guide holes 12 respectively.
[0055] The electromagnetic copper wire 21 passes through the magnet skeleton 10 along the guide hole 12 and extends to one side of the insulating shell 11. For example, the electromagnetic copper wire 21 can be located on the side of the insulating shell 11 after being led out, thereby effectively facilitating the staff to bend the electromagnetic copper wire 21 toward the terminal 30 during assembly and cut off the exposed electromagnetic copper wire 21.
[0056] In some embodiments, a plurality of receiving grooves 14 are further provided on one side of the magnet skeleton 10 facing the coil 20 along the first direction. The receiving grooves 14 are circumferentially arranged on the magnet skeleton 10 and are used to accommodate the permanent magnets 15 .
[0057] For example, in combination Figure 1 As shown, the magnet skeleton 10 is further provided with a felt ring 16 , and the felt ring 16 is located on the inner ring side of the permanent magnet 15 .
[0058] In the embodiment of the present application, the felt ring 16 is located on the inner side of the magnet frame 10, which can effectively prevent external dust, oil and the like from contaminating the internal permanent magnet 15. Exemplarily, a magnetic blocking ring 17 can be further provided on the outer side of the magnet frame 10 away from the felt ring 16, so as to shield the magnetic force of the permanent magnet 15 on the outer ring of the magnet frame 10, so as to reduce the interference of the permanent magnet 15 on the external equipment.
[0059] See also Figure 6 As shown, Figure 6 A three-dimensional structural schematic diagram of an embodiment of a permanent magnetic brake device provided by the present application is shown.
[0060] In some embodiments, the permanent magnetic brake device further includes a power connection 13 , which is at least partially embedded in the insulating housing 11 and electrically connected to the terminal 30 .
[0061] In the embodiment of the present application, the power connection 13 includes a positive line connected to the positive electrode of the power supply and a negative line connected to the negative electrode of the power supply. Figure 1 As shown, there are two terminals 30 , which are electrically connected to two power wirings 13 respectively, so that the terminals 30 can be connected to the positive pole and the negative pole of the power source respectively.
[0062] See also Figure 7 As shown, Figure 7 An exploded view of an embodiment of an electromagnetic brake device provided by the present application is shown.
[0063] In some embodiments, in combination Figure 1 and Figure 7 As shown, the permanent magnet brake device further includes a magnet core 42 , which is fitted with the magnet frame 10 along a first direction, wherein the magnet core 42 has a notch 420 , and the electromagnetic copper wire 21 of the coil 20 extends into the insulating shell 11 along the notch 420 .
[0064] At present, the routing method of the electromagnetic copper wire 21 of the coil 20 is: after passing through the coil 20, it passes through the magnetic core 42, and is located on the side of the magnetic skeleton 10 for bending processing, until it extends to the outside of the shell and connects to the motor power supply. In the embodiment of the present application, by changing the routing method of the electromagnetic copper wire 21, it passes through the magnetic core 42 and the magnetic skeleton 10 in turn, and is bent inside the insulating shell 11. In other words, the bending and wiring processing inside the shell is changed to the outside of the shell, which effectively reduces the wiring difficulty of the staff.
[0065] In some embodiments, the permanent magnet brake device also includes a hub 43, which penetrates the magnet skeleton 10 along the first direction, wherein the outer periphery of the hub 43 is also sequentially sleeved with a plate spring 44 and an armature plate 45, and the plate spring 44 can deform and drive the armature plate 45 to move along the first direction.
[0066] In the embodiment of the present application, when the brake device is braking, the hub 43 and the external device (such as the motor shaft of the motor) are pressed tightly by interference fit to eliminate the rotation backlash of the brake device.
[0067] Exemplarily, when the terminal 30 of the permanent magnet brake device is energized with an external power supply, the electromagnetic field generated by the coil 20 counteracts the permanent magnetic field generated by the permanent magnet 15, the plate spring 44 is in a normal state (unstressed state), and the hub 43 and the motor shaft can rotate freely.
[0068] When the terminal 30 is in the power-off state, the coil 20 does not generate an electromagnetic field, so that the plate spring 44 is elastically deformed by the magnetic force of the permanent magnet 15 , and at the same time drives the armature plate 45 to contact the upper end surface of the magnetic core 42 to achieve braking of the hub 43 .
[0069] In some embodiments, the leaf spring 44 is connected to the hub 43 and the armature plate 45 at both sides along the first direction through rivets 46 , respectively, wherein the rivets 46 are further provided with toothed washers.
[0070] In the embodiment of the present application, a toothed washer is provided on the rivet 46 to reduce looseness between the components.
[0071] The above description is only an implementation method of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present utility model, or directly or indirectly used in other related technical fields, should be included in the protection scope of the present utility model.
Claims
1. A permanent magnetic brake device, characterized in that: include: A magnet frame, wherein an insulating shell is provided above the magnet frame along a first direction; A coil, the coil is located along the first direction on a side of the magnet frame away from the insulating shell, wherein the coil is provided with a plurality of electromagnetic copper wires toward the magnet frame, and the plurality of electromagnetic copper wires penetrate the magnet frame along the first direction into the insulating shell; A plurality of terminals are embedded in the insulating housing along the first direction and are fitted with the plurality of electromagnetic copper wires in a one-to-one correspondence.
2. The permanent magnetic brake device according to claim 1, characterized in that: The electromagnetic copper wire located in the insulating housing is at least partially bent toward the terminal so that the electromagnetic copper wire is vertically connected to the terminal.
3. The permanent magnetic brake device according to claim 1, characterized in that: The magnet skeleton also has a plurality of guide holes connected to the insulating shell, wherein the guide holes are located on the outer ring side of the magnet skeleton, wherein the plurality of electromagnetic copper wires respectively pass through the magnet skeleton along the guide holes.
4. The permanent magnetic brake device according to claim 1, characterized in that: The permanent magnetic brake device also has a power supply connection, which is at least partially embedded in the insulating shell and electrically connected to the terminal.
5. The permanent magnetic brake device according to claim 1, characterized in that: The permanent magnetic brake device also includes a shell, which is provided with a square hole. The square hole is located above the magnet skeleton along the first direction, so that the insulating shell can pass through the square hole and be at least partially located outside the shell.
6. The permanent magnetic brake device according to claim 1, characterized in that: The permanent magnet brake device also includes a magnet core, which is fitted with the magnet frame along the first direction, wherein the magnet core has a notch, and the electromagnetic copper wire of the coil extends into the insulating shell along the notch.
7. The permanent magnetic brake device according to claim 1, characterized in that: The permanent magnet brake device also includes a hub, which penetrates the magnet frame along the first direction, wherein the outer periphery of the hub is also sequentially sleeved with a plate spring and an armature plate, and the plate spring can be deformed and drive the armature plate to move along the first direction.
8. The permanent magnetic brake device according to claim 7, characterized in that: The two sides of the plate spring along the first direction are respectively connected to the hub and the armature plate through rivets, wherein the rivets are further provided with toothed washers.
9. The permanent magnetic brake device according to claim 1, characterized in that: The magnet frame is further provided with a plurality of accommodating grooves on one side thereof facing the coil along the first direction. The accommodating grooves are circumferentially arranged on the magnet frame and are used to accommodate permanent magnets.
10. The permanent magnetic brake device according to claim 9, characterized in that: The magnet frame is also provided with a felt ring, and the felt ring is located on the inner ring side of the permanent magnet.