JP5150123B2 - Direct acting electric actuator for vibration control - Google Patents

Description

  The present invention relates to a vibration-controlling direct acting electric actuator that generates a linear driving force in a control device such as an electromagnetic damper.

  Conventionally, as a direct acting electric actuator, a permanent magnet having alternating polarity arranged on the inner diameter side or outer diameter side of a cylindrical mover is provided, and a plurality of armature coils provided with a predetermined gap are provided with the permanent magnet. Some are arranged in the operating direction of the stator. According to such a linear motion type electric actuator, thrust is generated along the longitudinal direction of the permanent magnet by the electromagnetic action of the armature and the permanent magnet by applying a predetermined current to the armature coil (the left hand of Fleming). Law), the mover can be moved linearly.

  In the case of such a direct acting electric actuator, an armature coil is provided with an integral multiple of the number of power supply phases. For example, when the armature coil is excited by a three-phase power supply, 3 provided in the operating length direction. Are connected in a predetermined pattern such that the in-phase armature coils of the integral multiple of the armature coils are connected by wiring. Such wiring is determined according to specifications such as the number of armature coils and the connection method. However, as the number of armature coils increases, the number of lead wires of the armature coils is twice that of the armature coils, and therefore wiring work for connecting with lead wires while confirming the lead wires becomes complicated and troublesome. Moreover, since the lead wires are usually collected and bundled at one place on the circumference of the armature coil, the wiring is complicated.

Therefore, as this type of prior art, for example, the connecting point of the in-phase coil conductor and the intermediate point of the inter-phase coil conductor of the armature coil of the linear motor are connected by a wiring board on which a predetermined wiring pattern is formed. Some attempt to facilitate connection processing (see, for example, Patent Document 1).
JP 2000-308328 A (page 3, FIG. 3)

  By the way, in a vibration damping device in which this kind of vibration-controlled direct acting electric actuator is used, there is a demand to cope with a higher load by increasing the generated thrust of the direct acting electric actuator.

  However, if an attempt is made to increase the current or voltage applied to the armature coil in order to increase the thrust generated in the direct acting type electric actuator, the circuit board is subject to heat generation and withstand voltage limitations. When the current is increased, heat generation due to the electrical resistance of the pattern arranged on the wiring board increases. Normally, this is dealt with by improving the heat resistance performance of the wiring board and increasing the pattern width to reduce the electrical resistance of the pattern. However, these measures are limited, and are not a means that can be used regularly. For example, a substrate material having good heat resistance is often difficult to adopt due to high costs. In addition, the expansion of the pattern width increases the shape of the wiring board, so that the installation location is restricted, and the spacing between adjacent patterns arranged on the same plane is reduced, resulting in a decrease in insulation performance between the two. . In addition, when the pattern width is increased, the capacity of the capacitive load (capacitor) composed of the patterns arranged on the front and back sides of the wiring board (in the case of a multilayer board) is also increased, and a high-frequency current is applied. The problem that the leakage current increases when it is exposed to the surface. This point can be solved to some extent by replacing the substrate material with a low dielectric constant material, but this also causes technical limitations and cost problems.

  Furthermore, when increasing the voltage, it is necessary to increase the pattern interval and the stack interval on the same plane to ensure insulation performance, and an increase in the size of the wiring board is inevitable. Thus, the problem in the case where the generated thrust is increased by increasing the current to the armature coil or increasing the voltage also occurs in the invention described in Patent Document 1.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a vibration-controlling direct acting electric actuator that can stably increase a generated thrust by increasing a current or a voltage.

To achieve the above object, the present invention includes a movable element whose polarity is arranged multiple permanent magnets any alternating the actuation direction, cylinder with a plurality of armature coils in actuating direction of the mover a stator shape, and a wiring substrate formed with a predetermined pattern circuit connecting the pull outgoing of the armature coil, the lead wire of each phase of the armature coil in the circumferential direction before Symbol stator The lead wires are drawn out at a predetermined angle, and the lead wires are connected to the wiring boards provided for each phase . Thus, it is only necessary to connect the lead wire for each excitation phase drawn out with a predetermined angle in the circumferential direction of the stator to the wiring board provided for each phase, and easily connect the lead wire for each phase. In addition, a predetermined pattern circuit for each phase formed on the wiring board can increase the generated thrust without causing heat generation or insufficient insulation performance even when the current or voltage is increased.

In addition, a wiring board for each phase on which the pattern circuit is formed may be provided on the outer periphery of the stator, and a lead wire for each phase of the armature coil may be connected to each wiring board. In this way, it is only necessary to connect each phase lead wire to each wiring board provided in the operating direction on the outer periphery of the stator, and each lead wire can be connected more easily, and current and voltage can be connected. The generated thrust can be increased without increasing heat generation without causing heat generation or insufficient insulation performance.

Furthermore, a mover in which a plurality of permanent magnets are arranged so that the polarities are alternately different in the operation direction, a cylindrical stator in which a plurality of armature coils are arranged in the operation direction of the mover, and the armature coil A wiring board on which a predetermined pattern circuit for connecting the lead wire is formed, and the lead wire for each phase of the armature coil is drawn out by being shifted by a predetermined angle in the circumferential direction of the stator, and the wiring board is Provided at the end of the stator in the operating direction, and separately form the pattern circuit for each phase on the wiring board, and connect the lead wire for each phase of the armature coil to the pattern circuit for each phase, respectively. May be. If it does in this way, what is necessary is just to draw out and connect the lead wire of each phase to the wiring board provided in the operation | movement direction edge part of the stator, and can connect each leader line easily at a stator edge part. In addition, even if the current and voltage are increased, the generated thrust can be increased without causing heat generation or insufficient insulation performance.

Further, a mover in which a plurality of permanent magnets are arranged so that the polarities are alternately different in the operation direction, a cylindrical stator in which a plurality of armature coils are arranged in the operation direction of the mover, and the armature coil A wiring board on which a predetermined pattern circuit for connecting the lead wire is formed, and the lead wire for each phase of the armature coil is drawn out by being shifted by a predetermined angle in the circumferential direction of the stator, and the wiring board is Provided at both ends of the stator in the operation direction, and separately formed pattern circuits for each phase on the wiring board at both ends, and lead lines for each phase of the armature coil in the pattern circuit for each phase Each may be connected. In this way, by pulling out and connecting the lead wires for each phase to the wiring boards provided at both ends of the stator in the operating direction, the current and voltage can be increased while suppressing heat generation and insufficient insulation performance. be able to.

Furthermore, if the number of power supply phases is constituted by three phases, and the lead lines for the respective phases of the three phases are drawn out by shifting them by a predetermined angle in the circumferential direction of the stator, the pattern circuit for each phase of the three-phase power source can be enlarged It is possible to avoid heat generation and insufficient insulation performance.

  The present invention provides a vibration-controlling direct acting electric actuator capable of increasing the generated thrust without causing heat generation or insufficient insulation performance even when the energizing current or voltage is increased by the means described above. It becomes possible.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In these embodiments, the case where the armature coil is configured by three-phase Y connection will be described as an example. FIG. 1 is a cross-sectional view of a vibration-controlling direct acting electric actuator according to a first embodiment of the present invention, and FIG. 2 is an exploded view of a part of the stator in the direct acting electric actuator of FIG. FIG. 3 is a perspective view schematically showing the assembled state of the stator shown in FIG. 2, FIG. 4 is a side view of the stator shown in FIG. 3, and FIG. FIG. 6 is a pattern circuit diagram of the connection diagram of the armature coil shown in FIG. 5. In addition, these drawings are described typically.

  First, an example of a vibration-controlling direct acting electric actuator in which the present invention is adopted will be described with reference to FIG. The illustrated vibration-controlling direct acting electric actuator 1 is provided with a fixed-side main body 3 having a stator 2 therein, and one end of the fixed-side main body 3 in the operating direction is pivotally supported on the fixed side. A counter-output side rod end 4 is provided. A stator 2 provided inside the stationary main body 3 is provided with a plurality of iron cores 5 and armature coils 6 in the operation direction A of the vibration-controlling direct acting electric actuator 1 in an integral multiple of the number of phases of the power source. ing. Since this embodiment uses a three-phase power source, twelve armature coils 6 are provided. In addition, a power supply port 7 to the armature coil 6 is provided at the lower portion of the fixed side main body 3 shown in the figure, and three-phase power is supplied from the power supply port 7.

  On the other hand, a movable element 8 that moves in the operation direction A is provided inside the fixed-side main body 3. An output shaft 9 provided on the movable element 8 is supported by a slide bearing 10 provided on the fixed-side main body 3, and an output-side rod end 11 is provided in a direction opposite to the counter-output-side rod end 4. ing. A predetermined gap is provided between the outer periphery of the mover 8 and the inner periphery of the stator 2. The mover 8 includes a mover main body 13 fixed to the output shaft 9 and permanent magnets 14 and 15 provided around the mover main body 13. The N-pole permanent magnets 14 and the S-pole permanent magnets 15 are arranged so that the polarities are alternately different in the operation direction A.

  According to the vibration-controlling direct acting electric actuator 1 configured as described above, when a predetermined current is applied to the armature coil 6 of the stator 2, the permanent magnets 14 and 15 of the mover 8 are moved in the operating direction A (axis Direction). By this generated thrust, the output side rod end 11 of the output shaft 9 provided in the mover 8 is moved. The output side rod end 11 is fixed to the movable side.

  And the wiring board 17 which connects the lead wire 16 for every phase of the several armature coil 6 in the operation direction A in the outer periphery of the said stator 2 is provided. The illustrated wiring board 17 shows one of the three phases, and a lead wire 16 for one phase of the armature coil 6 is connected thereto. The wiring substrate 17 is made of glass epoxy resin or the like, and a predetermined pattern circuit is formed according to the number of armature coils 6 to be connected in advance and the connection method. The lead wire 16 and the wiring substrate 17 are connected by inserting the lead wire 16 from one side into a connection hole (not shown) formed in the wiring substrate 17 and soldering the other lead wire end to the wiring substrate 17. Is done by. The wiring board 17 is fixed to the iron core 5 with bolts 18. The wiring of the power supply unit 7 is connected to the connection unit 19 (one phase is shown in the figure).

  As shown in FIG. 2, the iron core 5 of the stator 2 is provided with a notch 20 through which the lead wire 16 of the armature coil 6 provided inside passes, and one piece is provided from one notch 20. The lead wire 16 of the armature coil 6 is drawn to the outer periphery of the iron core 5. In FIG. 2, the lead wire 16 of the first armature coil 6 at the left end is drawn forward, and the lead wire 16 of the second armature coil 6 is on the upper back side and the third armature coil 6. The lead wire (not shown) is drawn to the lower back side, and in this example, the lead wire 16 for each phase of the three-phase power source is drawn with a predetermined angle in the circumferential direction of the iron core 5. These lead wires 16 are drawn out in accordance with the positions where the wiring board 17 is previously determined.

  As shown in FIGS. 3 and 4, the outer periphery of the stator 2 in a state where the iron core 5 and the armature coil 6 are laminated is provided for each phase drawn out from the outer periphery of the iron core 5 at a predetermined angle. The wiring board 17 for connecting the lead wires 16 is provided in the operation direction A. In this example, since a three-phase power source is used, the wiring board 17 is composed of a U-phase wiring board 17u, a V-phase wiring board 17v, and a W-phase wiring board 17w. These three wiring boards 17u, 17v, and 17w are provided at three positions on the outer periphery of the iron core 5 at intervals of 120 °. The positions of these wiring boards 17u, 17v, 17w are determined in advance, and as described above, the armature coil 6 is pulled out for each phase so as to match the positions of these wiring boards 17u, 17v, 17w. Line 16 is drawn. Each of the wiring boards 17u, 17v, 17w for each phase incorporates a pattern circuit for one phase. The ends of these wiring boards 17u, 17v, and 17w are connected to each other by a three-phase Y connection by electric wires. The neutral point 21 of this Y connection may be constituted by a substrate other than the wiring. In addition to the glass epoxy resin, the wiring board 17u, 17v, 17w is preferably made of a nylon resin material, a phenol resin material, or the like as the high temperature compatible material. As the high-frequency compatible material, a fluorine-based resin, ceramic, or the like is suitable.

  As shown in FIGS. 5 and 6, the twelve armature coils 6 (L1 to L12 are attached from the left side of the drawing) in this embodiment are three-phase power sources, so four are connected in series. Connected with three connected phases. As shown in the figure, among the 12 armature coils 6 of L1 to L12, L1, L4, L7, and L10 are U phases, L2, L5, L8, and L11 are W phases, and L3, L6, L9, and L12 are V phases. Wired as a phase. The pattern circuit for such connection is determined in advance by the number of armature coils 6 and the number of power supply phases. In this embodiment, one phase of such a pattern circuit is built in each of the wiring boards 17u, 17v, 17w.

  According to the vibration-controlling direct acting electric actuator 1 having the stator 2 configured as described above, current and voltage are provided by the wiring boards 17u, 17v, and 17w provided for each phase of the armature coil 6. Even if the generated thrust is increased by increasing the power, the wiring board 17 can be used stably without causing problems such as a rise in temperature and a decrease in insulation performance. For example, in the case of the three-phase power supply according to this embodiment, the wiring board 17 is divided into three wiring boards 17u, 17v, and 17w having the same number of power supply phases, and these wiring boards 17u, 17v, and 17w are divided into conventional ones. By making the size equal to the size of the wiring board, each wiring board 17u, 17v, 17w is the same size as the conventional one, but the built-in pattern circuit is only for one phase, and the temperature rise in each wiring board 17u, 17v, 17w It is possible to prevent the insulation performance from deteriorating. In addition, since a predetermined pattern circuit is formed on these wiring boards 17 according to the number of armature coils 6 to be connected in advance and the connection method, the connection holes (not shown) formed on the wiring board 17 are formed. The lead wire 16 is inserted from one side and the other lead wire end is soldered to the wiring board 17 to complete the connection between the lead line 16 and the wiring board 17, so that a quick wiring connection can be made without any errors. Work becomes possible. Further, although it depends on the conditions, it is possible to prevent the temperature rise and the insulation performance from deteriorating even if the material of the wiring boards 17u, 17v, 17w is not expensive.

  Furthermore, in this embodiment, since the wiring boards 17u, 17v, and 17w are provided on the outer periphery of the stator 2 at an equally spaced angle, the overall size can be increased even if the wiring boards 17u17v17w are somewhat larger. Therefore, it is possible to easily configure each wiring board 17u, 17v, 17w to withstand a desired current / voltage.

  FIG. 7 is a perspective view schematically showing a state in which a part of the stator in the direct acting electric actuator for vibration control according to the second embodiment of the present invention is disassembled, and FIG. 8 is shown in FIG. FIG. 9 is a front view of the wiring board shown in FIG. 8. FIG. 9 is a perspective view schematically showing the assembled state of the stator. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In the second embodiment, a disc-shaped wiring board 23 is provided at the end of the stator 22 in the operating direction A, and the wide area of the wiring board 23 is used to increase the spacing between the pattern circuits for each phase. It solves the problems of heat generation and deterioration of insulation performance.

  As illustrated, a disk-shaped wiring board 23 is provided at one end of the stator 22. The pattern circuit shown in FIGS. 5 and 6 is formed separately for each phase inside the wiring board 23. In this embodiment, the pattern circuit for each phase differs in the circumferential direction. Built in position. Further, a three-phase Y-connection pattern circuit is also built in the wiring board 23. On the other hand, on the outer periphery of the iron core 5 of the stator 22, a groove portion 24 for guiding the lead wire 16 of each armature coil 6 in the operation direction A is formed. The lead wire 16 for each phase of the armature coil 6 is led to the wiring board 23 provided at the end portion through the groove portion 24 provided in the iron core 5.

  In the second embodiment, an example in which the wiring board 23 is provided at one end of the stator 22 is shown, but a sufficient effect cannot be obtained with the wiring board 23 provided at one end (right side in the figure). In this case, a wiring board 25 is also provided at the other end (left side in the figure) of the stator 22 as shown by a two-dot chain line in the figure, and each phase is provided on the wiring boards 23 and 25 provided at both ends of the stator 22. What is necessary is just to solve the problem of heat_generation | fever and a degradation of insulation performance by forming each pattern circuit separately and connecting the leader line 16 to those pattern circuits separately. Further, the pattern circuit formed separately for each phase in this embodiment may be formed by dividing the wiring board 25 in the circumferential direction or in the radial direction.

  Also for each phase formed in the wide area of the wiring board 23 (25) provided at the end of the stator 22 by the vibration-controlling linear motion type electric actuator provided with the stator 22 configured as described above. With this pattern circuit, even if the current and voltage are increased and the generated thrust is increased, the pattern circuit can be used stably without causing problems of temperature rise and insulation performance degradation.

  In the above-described embodiment, the direct acting electric actuator has been described as an example. However, the present invention can be similarly applied to a direct acting electric solenoid or the like. In the above-described embodiment, an example in which the Y-connection of the three-phase power supply is used has been described. However, other methods may be used for the power supply and the connection.

  Furthermore, the above-described embodiment shows an example, and various modifications can be made without departing from the gist of the present invention, and the present invention is not limited to the above-described embodiment.

  The vibration control linear motion type electric actuator according to the present invention is useful for a vibration control device such as an electromagnetic damper provided in a machine or a structure.

It is sectional drawing of the linear motion type electric actuator for damping | damping which concerns on 1st Embodiment of this invention. It is a perspective view which shows typically the state which decomposed | disassembled a part of stator in the direct acting type electric actuator of FIG. FIG. 3 is a perspective view schematically showing an assembled state of the stator shown in FIG. 2. FIG. 4 is a side view of the stator shown in FIG. 3. FIG. 4 is a connection diagram of armature coils of the stator shown in FIG. 3. It is a pattern circuit diagram of the connection diagram of the armature coil shown in FIG. It is a perspective view which shows typically the state which decomposed | disassembled a part of stator in the direct-acting electric actuator for damping | damping which concerns on 2nd Embodiment of this invention. It is a perspective view which shows typically the assembly state of the stator shown in FIG. It is a front view of the wiring board shown in FIG.

Explanation of symbols

1 ... Direct acting electric actuator for vibration control
2 ... Stator
3 ... Fixed side body
5 ... Iron core
6 ... Armature coils (L1 to L12)
7 ... Power supply port
8 ... Movers
DESCRIPTION OF SYMBOLS 9 ... Output shaft 10 ... Sliding bearing 13 ... Movable body 14 ... Permanent magnet 15 ... Permanent magnet 16 ... Leader wire 17 (17u, 17v, 17w) ... Wiring board 18 ... Bolt 19 ... Connection part 20 ... Notch part 21 ... Neutral point 23, 25 ... Wiring board 24 ... Groove
A ... Operating direction

Claims (5)

A mover in which a plurality of permanent magnets are arranged so that the polarities are alternately different in the operation direction;
A cylindrical stator in which a plurality of armature coils are arranged in the operating direction of the mover;
A wiring board on which a predetermined pattern circuit for connecting the lead wire of the armature coil is formed;
The lead wire for each phase of the armature coil is drawn out with a predetermined angle shifted in the circumferential direction of the stator, and the lead wire is connected to a wiring board provided for each phase. A direct acting electric actuator for vibration control. The wiring board for each phase in which the pattern circuit is formed is provided on the outer periphery of the stator, and a lead wire for each phase of the armature coil is connected to each wiring board, respectively. The direct acting electric actuator for vibration control as described. A mover in which a plurality of permanent magnets are arranged so that the polarities are alternately different in the operation direction;
A cylindrical stator in which a plurality of armature coils are arranged in the operating direction of the mover;
A wiring board on which a predetermined pattern circuit for connecting the lead wire of the armature coil is formed;
The lead wire for each phase of the armature coil is drawn out with a predetermined angle shifted in the circumferential direction of the stator ,
The wiring board is provided at the end of the stator in the operation direction, and a pattern circuit for each phase is separately formed on the wiring board, and a lead wire for each phase of the armature coil is formed in the pattern circuit for each phase. the characteristics and to that system mutabilis direct-acting electric actuator that respectively connected. A mover in which a plurality of permanent magnets are arranged so that the polarities are alternately different in the operation direction;
A cylindrical stator in which a plurality of armature coils are arranged in the operating direction of the mover;
A wiring board on which a predetermined pattern circuit for connecting the lead wire of the armature coil is formed;
The lead wire for each phase of the armature coil is drawn out with a predetermined angle shifted in the circumferential direction of the stator ,
The wiring board is provided at both ends of the stator in the operation direction, and a pattern circuit for each phase is separately formed on the wiring board at both ends, and each phase of the armature coil is formed in the pattern circuit for each phase. features and to that system mutabilis direct-acting electric actuator that is connected respectively to the lead lines. The number of power supply phases is constituted by three phases, and a lead wire for each phase of the three phases is drawn out with a predetermined angle shifted in the circumferential direction of the stator. A direct acting electric actuator for vibration control as described in 1.

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