JP2008300629A - Solenoid apparatus and its driving method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve conventional conflicting problems simultaneously by securing the long stroke displacement of a plunger part and also securing the reduction of energy consumption (power consumption) and a smooth and stable operation. <P>SOLUTION: A solenoid apparatus includes: a pair of side yoke parts 7a, 7b arranged at both ends in an axial direction; and inner yoke parts 7m arranged between the side yoke parts 7a, 7b. Cylindrical yoke flange parts 8a, 8ma, 8mb, 8b are respectively integrally formed at mutually opposing parts in the respectively adjacent yoke parts 7a, 7m, and 7m, 7b. The respective yoke flange parts 8a, 8ma, ..., are inserted to coil parts 3a, 3b and also a magnet part 6 is put through at the inner sides of the respective yoke flange parts 8a, 8ma, .... At least the coil part 3a or 3b where the magnet part 6 is positioned is energized in driving, thereby the magnet part 6 is moved to the other coil part 3b or 3a by repulsion. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a solenoid device including a stator portion having at least a pair of coil portions and a plunger portion having a magnet portion fixed to a shaft portion, and a driving method thereof.

  2. Description of the Related Art Conventionally, a stator portion having a pair of coil portions arranged side by side in the axial direction and a plunger portion having a magnet portion disposed on the inner side of the coil portion and fixed to a shaft portion supported so as to be displaceable in the axial direction are provided. As a solenoid device, a latching solenoid disclosed in Patent Document 1 already proposed by the present applicant is known.

The latching solenoid is a latching solenoid that displaces the plunger by energizing the solenoid portion, and includes a pair of solenoid portions arranged in the axial direction, a pair of plunger portions arranged corresponding to each solenoid portion, and each plunger A single output shaft portion that penetrates the portion in an axial direction and that has a displacement range restricted by each plunger portion is provided.
JP-A-2005-116723

  By the way, since the conventional latching solenoid described above includes a pair of coil portions arranged side by side in the axial direction, the axial length of the stator portion is a general latching solenoid (general solenoid) including a single coil portion. The overall shape of the latching solenoid is also elongated in the axial direction accordingly. Therefore, the latching solenoid using such a pair of coil portions can perform an operation that cannot be realized by a general solenoid. For example, as the stator portion becomes longer in the axial direction, the displacement of the plunger portion also moves relative to the general solenoid. Since it can be made longer, a switching operation requiring a long stroke displacement is also possible.

  However, in this case, as the stroke displacement becomes longer, energy consumption (power consumption) tends to increase, and it becomes difficult to ensure smooth and stable operation. After all, even if the stroke displacement can be lengthened, there is a problem to be solved that other conflicting problems occur.

  An object of the present invention is to provide a solenoid device and a driving method thereof that solve the problems existing in the background art.

  In order to solve the above-described problem, the solenoid device 1 according to the present invention is disposed on the inner side of the stator portion 2 having at least a pair of coil portions 3a and 3b arranged side by side in the axial direction, and the coil portions 3a and 3b. And a solenoid device comprising a plunger portion 4 having a magnet portion 6 fixed to a shaft portion 5 supported so as to be displaceable in the axial direction, and a pair of side yoke portions 7a, 7b disposed at both axial ends. An inner yoke portion 7m disposed between the side yoke portions 7a and 7b is provided, and cylindrical yoke flange portions 8a, 8ma, 8mb, and 8b are provided at adjacent portions of the adjacent yoke portions 7a and 7m, 7m, and 7b. Are integrally formed, and each yoke flange portion 8a, 8ma, 8mb, 8b is inserted inside the coil portions 3a, 3b, and each yoke flange portion 8a, ma, 8MB, and characterized by being configured the magnet portion 6 so as to be inserted inside the 8b. In this case, according to a preferred aspect of the invention, it is possible to provide a cylindrical cover yoke portion 7o that covers the outer peripheral portions of the pair of side yoke portions 7a and 7b and the inner yoke portion 7m, and at least the side where the magnet portion 6 is located. By selectively energizing the coil portion 3a or 3b, energization control means 9 for repelling the magnet portion 6 can be provided.

  Further, in order to solve the above-described problem, the driving method of the solenoid device according to the present invention includes a stator portion 2 having at least a pair of coil portions 3a and 3b arranged in the axial direction, and an inner side of the coil portions 3a and 3b. When driving the solenoid device 1 provided with the plunger portion 4 having the magnet portion 6 fixed to the shaft portion 5 supported so as to be displaceable in the axial direction, a pair of sides disposed at both axial ends The yoke portion 7a, 7b and the inner yoke portion 7m disposed between the side yoke portions 7a, 7b are provided, and the cylindrical yoke flange portion 8a is disposed at a portion where the adjacent yoke portions 7a, 7m, 7m, 7b face each other. , 8ma, 8mb, and 8b are integrally formed, and the yoke flange portions 8a, 8ma, 8mb, and 8b are inserted inside the coil portions 3a and 3b. The magnet portion 6 can be inserted inside the yoke flange portions 8a, 8ma, 8mb, and 8b, and at the time of driving, the magnet portion 6 is repelled by energizing at least the coil portion 3a or 3b on the side where the magnet portion 6 is located. The other coil portion 3b or 3a is moved. In this case, according to a preferred aspect of the invention, the other coil portion 3b or 3a may be de-energized or may be subjected to auxiliary control if necessary.

  According to the solenoid device 1 and the driving method thereof according to the present invention, the following remarkable effects can be obtained.

  (1) A pair of side yoke portions 7a and 7b disposed at both ends in the axial direction and an inner yoke portion 7m disposed between the side yoke portions 7a and 7b are provided, and the adjacent yoke portions 7a and 7m, 7m and 7b The cylindrical yoke flange portions 8a, 8ma,... Are integrally formed at opposing portions, and the yoke flange portions 8a, 8ma,... Are inserted inside the coil portions 3a, 3b, and the yoke flange portions 8a, 8ma are inserted. Since the magnet portion 6 can be inserted into the inner side of the ..., at the time of driving, the plunger portion 4 can be securely connected to the other by only the repulsive force of the magnet portion 6 by energization of the coil portion 3a or 3b on the side where the magnet portion 6 is located. It can move to the coil part 3b or 3a side. Thereby, the conflicting problems in the prior art can be solved at the same time, such as ensuring a long stroke displacement of the plunger portion 4 and at the same time ensuring a reduction in energy consumption (power consumption) and a smooth and stable operation.

  (2) According to the present invention, if an energization control means 9 for repelling the magnet unit 6 is provided by selectively energizing at least the coil unit 3a or 3b on the side where the magnet unit 6 is located, according to the present invention. The driving method using the solenoid device 1 can be carried out reliably and effectively.

  (3) If the other coil part 3b or 3a is made non-energized according to a preferred embodiment, the energy consumption (power consumption) can be minimized by applying it to an application with a small weight when driving. it can. Further, if auxiliary control is performed on the other coil portion 3b or 3a, in addition to non-energization, for example, performance (characteristics) corresponding to the application can be obtained by performing weight increase / decrease control during driving. Functionality can be further enhanced by setting or adding acceleration control, brake control, or the like.

  Next, the best embodiment according to the present invention will be given and described in detail with reference to the drawings.

  First, the configuration of the solenoid device 1 according to the present embodiment will be described with reference to FIGS.

  1 and 2 show the internal structure of the solenoid device 1. In the solenoid device 1, reference numeral 2 denotes a stator portion, which includes a pair of coil portions 3a and 3b arranged side by side in the axial direction and a yoke Y attached to the coil portions 3a and 3b.

  One coil portion 3a includes a cylindrical coil bobbin 11a formed of an insulating material, and a coil body 12a configured by winding a wire around the coil bobbin 11a. The other coil part 3b is configured in the same manner as the coil part 3a. Therefore, it is only necessary to prepare two coil parts 3a and distribute them to one coil part 3a and the other coil part 3b. However, when assembling, the coil part 3a and the coil part 3b are arranged in opposite directions. In addition, in the other coil part 3b, 11b shows a coil bobbin and 12b shows a coil main body, respectively.

  The yoke Y includes a pair of side yoke portions 7a and 7b disposed at both axial positions, an inner yoke portion 7m disposed between the side yoke portions 7a and 7b, a pair of side yoke portions 7a and 7b, And a cylindrical cover yoke portion 7o that covers the outer peripheral portion of the inner yoke portion 7m, and each is integrally formed of a magnetic material.

  One side yoke portion 7a includes a disc-shaped yoke main body portion 13a, a mounting portion 14a formed to extend outward from the yoke main body portion 13a in the direction perpendicular to the center, and the center of one end surface (inner side) of the yoke main body portion 13a. A cylindrical yoke flange portion 8a is formed so as to protrude. In this case, as shown in FIG. 3, the attachment portion 8a is formed with a plurality of insertion holes 15a through which attachment screws are inserted, and a through-hole 16a communicating with the yoke flange portion 8a is formed at the center of the yoke body portion 13a. Form. The yoke body portion 13a has a shape that fits into the end opening of the cover yoke portion 7o. Further, since the yoke flange portion 8a is formed in a cylindrical shape, it can be inserted inside the coil portion 3a, and a magnet portion 6 of the plunger portion 4 described later can be inserted inside the yoke flange portion 8a. Further, the through hole 16a is provided with a bearing portion 17a from the outside, and a stopper portion 18a also serving as a damper is accommodated inside the yoke flange portion 8a. The other side yoke portion 7b is also configured in the same manner as the one side yoke portion 7a described above. Therefore, it is only necessary to prepare two side yoke portions 7a and distribute them to one side yoke portion 7a and the other side yoke portion 7b. In the other side yoke portion 7b, 13b indicates a yoke body portion, 14b indicates a mounting portion, 16b indicates a through hole, 17b indicates a bearing portion, and 18b indicates a stopper portion.

  The inner yoke portion 7m has a disk-shaped yoke main body portion 19m and yoke flange portions 8ma and 8mb formed in a cylindrical shape from the center of both end surfaces of the yoke main body portion 19m. A through hole 20m communicating with the yoke flange portions 8ma and 8mb is formed. Since each yoke flange portion 8ma and 8mb are formed in a cylindrical shape, they can be inserted inside the coil portions 3a and 3b, respectively, and a magnet portion 6 of the plunger portion 4 described later is inserted inside the yoke flange portions 8ma and 8mb. be able to. In addition, 21m ... shows the several screw hole formed in the outer peripheral surface of the yoke main-body part 19m.

  By the way, the inner diameters of the yoke flange portions 8a and 8b formed on the side yoke portions 7a and 7b are different from the inner diameters of the yoke flange portions 8ma and 8mb formed on the inner yoke portion 7m. In this case, the inner diameters of the yoke flange portions 8ma and 8mb are selected to be relatively small, the clearance between the inner peripheral surface of the yoke flange portions 8ma and 8mb and the outer peripheral surface of the magnet portion 6 is made as small as possible, and the yoke flange portions 8a and 8b. It is desirable to select a relatively large inner diameter, and to provide a certain amount of clearance between the inner peripheral surfaces of the yoke flange portions 8a and 8b and the outer peripheral surface of the magnet portion 6.

  On the other hand, 4 is a plunger part, which has a magnet part 6 fixed to a shaft part 5 supported inside the coil parts 3a and 3b so as to be displaceable in the axial direction. The shaft portion 5 is formed of a magnetic material (or non-magnetic material), and a cylindrical magnet portion 6 is fixed to an intermediate position on the outer peripheral surface of the shaft portion 5. One end side in the axial direction of the magnet portion 6 is an N pole, and the other end side is an S pole (see FIG. 5A).

  Therefore, when assembling, as shown in FIG. 1, the inner yoke portion 7m is accommodated inside the cover yoke portion 7o and is positioned at the center in the axial direction. Then, fixing screws (not shown) are screwed into the screw holes 21m through insertion holes 22m (see FIG. 3) formed in the cover yoke portion 7o, and the inner yoke portion 7m is positioned and fixed inside the cover yoke portion 7o. In addition, the coil portions 3a and 3b are accommodated from openings at both ends of the cover yoke portion 7o. Thereby, the outer peripheral part of each yoke flange part 8ma and 8mb in the inner yoke part 7m is each inserted into the inside of the coil bobbins 11a and 11b from one end side. Furthermore, the plunger part 4 is accommodated inside the cover yoke part 7o. Then, the side yoke portions 4a and 4b are respectively mounted so as to close the opening at both ends of the cover yoke portion 7o. At this time, the outer peripheral portions of the yoke flange portions 8a and 8b of the side yoke portions 4a and 4b are inserted into the coil bobbins 11a and 11b from the other end side, and the yoke main body portions 13a and 13b are connected to the cover yoke portion 7o. It fits into each opening at both ends. Further, both end sides of the shaft portion 5 project outside the side yoke portions 4a and 4b through the bearing portions 17a and 17b. Thereafter, fixing screws (not shown) are screwed into screw holes (not shown) provided in the side yoke parts 4a and 4b through insertion holes formed in the cover yoke part 7o, and the side yoke parts 4a and 4b are connected to the cover yoke part 7o. Secure to. Thereby, the solenoid apparatus 1 shown in FIG. 3 can be obtained.

  On the other hand, the energization control means 9 is connected to the solenoid device 1 as shown in FIG. The energization control means 9 has a control function to repel the magnet unit 6 by selectively energizing at least the coil unit 3a or 3b on the side where the magnet unit 6 is located, and each coil unit 3a, 3b And connected to the output side of the control unit 31 provided in the energization control means 9. A DC power supply unit 32 and an operation unit 33 are connected to the input side of the control unit 31. Thereby, the energization control means 9 can energize at least the coil section 3a (or 3b) on the side where the magnet section 6 is located during driving. Accordingly, at this time, the other coil portion 3b (or 3a) is not energized. In addition, the other coil part 3b (or 3a) may perform the auxiliary control mentioned later as needed. By providing such an energization control means 9, the driving method using the solenoid device 1 can be carried out reliably and effectively.

  Next, the usage method and operation (principle) of the solenoid device 1 including the driving method according to the present embodiment will be described according to the flowchart shown in FIG. 4 with reference to FIGS.

  Now, the solenoid device 1 is in a stopped state (no power supply) in which neither of the coil portions 3a and 3b is energized, and the plunger portion 4 is in the left end position shown in FIG. 5 (a). To do. In this case, the N pole of the magnet portion 6 is attracted to the side yoke portion 7a, and the plunger portion 4 is stably held at the left end position (step S1).

  By the way, in the case of the solenoid device 1 according to the present embodiment, the relationship between the plunger portion 4 and the weight is as shown in FIG. The figure shows the characteristics of the position [mm] of the plunger portion 4 versus the magnitude [N] of the weight, where Fo is a characteristic when no power is supplied and Fp is a characteristic when power is supplied. As shown in FIG. 6, a negative load is applied to the plunger portion 4 in a stopped state when no power is supplied. When the plunger portion 4 is moved by an external force, the negative weight acts to the center position of the stator portion 2, and the positive weight acts from the center position to the right end position. Therefore, for example, when the plunger portion 4 is moved by hand to the right end position, it is necessary to push it from the left end position to the center position by hand, but from the point beyond the center position to the right end position, the S pole of the magnet portion 6 is required. Is sucked into the side yoke portion 7b, so there is no need to press it by hand.

  On the other hand, the behavior during power feeding is as follows. If the operation part 33 is operated, the control part 31 will perform electricity supply control with respect to the coil part 3a or 3b by which the plunger part 4 has stopped. In the illustrated example, since the plunger portion 4 is stopped at the left end position, the left coil portion 3a is energized (steps S2 and S4). When the plunger portion 4 is stopped at the right end position, the energization control may be performed on the coil portion 3b (steps S3 and S4). Thus, at the time of electric power feeding, only the coil part 3a (or 3b) on the side where the plunger part 4 is stopped is energized, and the other coil part 3b (or 3a) is not energized. Therefore, since the other coil portion 3b (or 3a) is in a non-energized state, it is particularly suitable for an application with a small weight during driving, and there is an advantage that energy consumption (power consumption) can be minimized. .

  As a result, during power feeding, a drive current flows from the power source 32 to the coil 3a, and as shown in FIG. 5B, an N pole is generated in the left side yoke 7a (yoke flange 8a), and the inner yoke An S pole is generated at the portion 7m (yoke flange portion 8ma). Accordingly, a repulsive force (positive weight) is generated between the magnet portion 6 and the side yoke portion 7a (step S5). As a result, the plunger unit 4 moves from the left end position to the right as shown in FIG. 5B (step S6). At this time, the magnitude of the weight acting on the plunger portion 4 follows the characteristic Fp shown in FIG. And if the plunger part 4 moves rightward and reaches the right end position (end position) shown in FIG.5 (c), the magnet part 6 will latch to the stopper 18b and will stop (step S7). The energization period for the coil portion 3a is from the start of energization until the plunger portion 4 passes through the center position. That is, as described above, after the plunger portion 4 has passed through the central position, the plunger portion 4 automatically moves to the right end position even if energization is canceled. Therefore, the energization to the coil portion 3a may be canceled after the plunger portion 4 passes through the center position (step S8). Thereby, as for the plunger part 4, the south pole of the magnet part 6 is attracted | sucked by the side yoke part 7b, and the plunger part 4 is stably hold | maintained in a right end position. In FIG. 5C, Ls indicates the distance of the stroke displacement of the plunger portion 4.

  Hereinafter, when the process of using the solenoid device 1 continues, the operation of moving the plunger portion 4 to the left and the operation of moving to the right are alternately performed (steps S9, S2, S3...). When the plunger portion 4 is moved to the left, the energization control may be performed so that the S pole is generated in the side yoke portion 7b.

  Therefore, according to the solenoid device 1 and the driving method thereof according to this embodiment, the pair of side yoke portions 7a and 7b disposed at both ends in the axial direction and the inner yoke portion 7m disposed between the side yoke portions 7a and 7b. Are formed integrally with the adjacent yoke portions 7a and 7m, 7m and 7b, and the yoke flange portions 8a, 8ma,. Since the magnet portion 6 can be inserted inside the yoke flange portions 8a, 8ma... While being inserted inside the portions 3a and 3b, at least the coil portion 3a or 3b on the side where the magnet portion 6 is located during driving. The plunger part 4 can be reliably moved to the other coil part 3b or 3a side only by the repulsive force of the magnet part 6 by energization. Accordingly, it is possible to simultaneously solve the conflicting problems in the related art, such as ensuring a long stroke displacement of the plunger portion 4 and at the same time reducing energy consumption (power consumption) and ensuring a smooth and stable operation.

  By the way, in the case of illustration, while supplying electricity, only one coil part 3a (or 3b) is energized and the other coil part 3b (or 3a) is not energized. Auxiliary control can be performed. For example, auxiliary control can be performed in which a small current in the forward direction or the reverse direction is supplied to the other coil portion 3b (or 3a). If such an auxiliary control function is provided, it is possible to set performance (characteristics) according to the application by performing load increase / decrease control when driving, or to add acceleration control, brake control, etc. Functionality can be increased.

  Although the best embodiment has been described in detail above, the present invention is not limited to such an embodiment, and departs from the gist of the present invention in the detailed configuration, shape, material, quantity, technique, and the like. It can be changed, added, or deleted as long as it is not. For example, the case where the illustrated pair of coil portions 3a and 3b are configured by a plurality of arbitrary coil portions 3a ... or a plurality of pairs, and the case where the illustrated two-pole magnet unit 6 is configured by other multiple poles such as a quadrupole are excluded. Not what you want. Therefore, a plurality of inner yoke portions 7m may be provided.

Sectional side view including a circuit diagram of the electrical system of the solenoid device according to the best embodiment of the present invention, Sectional front view of the solenoid device, External perspective view of the solenoid device, A flowchart for explaining a driving method of the solenoid device; Operation explanatory diagram of the solenoid device, A characteristic diagram showing the relationship between the position of the plunger portion in the solenoid device and the magnitude of the weight,

Explanation of symbols

  1: solenoid device, 2: stator portion, 3a: coil portion, 3b: coil portion, 4: plunger portion, 5: shaft portion, 6: magnet portion, 7a: side yoke portion, 7b: side yoke portion, 7m: inner yoke Part, 7o: cover yoke part, 8a: yoke flange part, 8ma: yoke flange part, 8mb: yoke flange part, 8b: yoke flange part, 9: energization control means

Claims (5)

  A stator portion having at least a pair of coil portions arranged side by side in the axial direction, and a plunger portion having a magnet portion fixed to a shaft portion arranged inside the coil portion and supported so as to be displaceable in the axial direction. A pair of side yoke portions disposed at both ends in the axial direction and an inner yoke portion disposed between the side yoke portions, and a cylindrical yoke flange portion at a portion where the adjacent yoke portions face each other. Are integrally formed, and each yoke flange portion is inserted inside the coil portion, and the magnet portion can be inserted inside each yoke flange portion.   The solenoid device according to claim 1, further comprising a cylindrical cover yoke portion that covers outer peripheral portions of the pair of side yoke portions and the inner yoke portion.   2. The solenoid device according to claim 1, further comprising energization control means for repelling the magnet unit by selectively energizing at least the coil unit on the side where the magnet unit is located.   A stator portion having at least a pair of coil portions arranged side by side in the axial direction, and a plunger portion having a magnet portion fixed to a shaft portion arranged inside the coil portion and supported so as to be displaceable in the axial direction. The solenoid device driving method includes a pair of side yoke portions disposed at both ends in the axial direction and an inner yoke portion disposed between the side yoke portions. The yoke flange portions are integrally formed, and each yoke flange portion is inserted inside the coil portion, and the magnet portion can be inserted inside each yoke flange portion so that at least the magnet portion is positioned during driving. By energizing the coil part on the side, the magnet part is repelled and moved to the other coil part side. The driving method of that solenoid device.   2. The method of driving a solenoid device according to claim 1, wherein the other coil portion performs non-energization or auxiliary control.

Images