JP2021118317A - Rotary solenoid - Google Patents

Abstract

To provide a rotary solenoid having such a constitution that a shaft does not linearly move in an axial direction and does not avoid increase of torque.SOLUTION: A first plunger 60, a second plunger 61, and a first shaft 62 fixed to the plungers are restrained from rotating by a rotation restraining pin 68. Therefore, when a first coil 70 and a second coil 72 are energized, the plungers and the shaft linearly move toward a second end face side of a case. First groove component members 21, 25, 64 fixed to the first shaft 62 also linearly move toward the second end face side, so that a steel ball 19 rotates second groove component members 31, 35, 65 while rolling. However, the second groove component members 31, 35, 65 are restrained from linearly rotating by a linear movement restraining member 75, so they do not move in an axial direction. Accordingly, a second shaft 66 does not linearly move in the axial direction, and only power of rotation movement can be obtained.SELECTED DRAWING: Figure 1

Description

The present invention relates to a rotary solenoid, and more particularly to a rotary solenoid having a configuration in which only the power of rotational motion is output without the shaft moving linearly in the axial direction.

A rotary solenoid having a so-called ball race configuration is widely used because it is easy to increase the rotation angle as compared with other configurations and a relatively large torque can be obtained. 11A and 11B show a rotary solenoid according to the prior art, FIG. 11A is a cross-sectional view before energization, and FIG. 11B is a cross-sectional view after rotation by energization. In FIG. 11, 190 is a rotary solenoid, 191 is a case, 191a is a fourth groove forming portion, 192 is a groove forming member, 192a is a first groove forming portion, 193 is a steel ball, 194 is a plunger, and 195 is a base. 196 is a shaft, 197 is a return spring, 198 is a coil, and 199 is a shaft bearing.

FIG. 11 is a rotary solenoid disclosed in Japanese Patent Application Laid-Open No. 2012-199457. The rotary solenoid 190 has a ball race configuration, and converts the linear motion of the plunger 194 into a rotary motion of the shaft 196 and outputs the rotary solenoid 190. That is, as shown in FIG. 11A, the plunger 194 is provided inside the case 191. Further, the shaft 196 is fixed to the plunger 194 by press-fitting the shaft 196 into the through hole of the plunger 194 formed in the so-called axial direction, that is, along the central axis of the shaft 196. The shaft 196 is slidably supported by the shaft bearing 199, and the shaft 196 and the plunger 194 are integrally slidable in the central axial direction of the shaft 196. Further, in the plunger 194, a portion exposed to the outside of the case 191 is press-fitted into the opening of the groove constituent member 192. The groove constituent member 192 is formed in the shape of an annular plate, and further forms a first groove forming portion 192a and two groove forming portions (not shown). The first groove forming portion 192a and the other two groove forming portions are formed in an arc shape so that the surface facing the case 191 is recessed. Similarly, in the case 191, a fourth groove forming portion 191a and two groove forming portions (not shown) are formed on the surface of the case 191 on the side facing the groove forming member 192. The first groove forming portion 192a and the other two groove forming portions are also formed in an arc shape so that the surface facing the case 191 is recessed. These three sets of groove forming portions are gently formed at the same angle. Then, the first groove forming portion 192a, the fourth groove forming portion 191a, and the other two sets of groove forming portions groups sandwich the steel ball 193 and two steel balls (not shown) from above and below. , Each is held in a rotatable state.

In addition, the shaft 196 has a return spring 197 connected to a portion outside the case 191. The return spring 197 constantly urges the shaft 196 toward the groove constituent member 192 by its elastic force. Further, the plunger 194 is attracted to the base 195 by the magnetic field generated by energizing the coil 198. When the plunger 194 is sucked into the base 195, the steel ball 193 and the two steel balls (not shown) are strongly pressed by the thrust of the plunger 194, and the first groove forming portion 192a and the fourth groove forming portion 191a It rolls while being sandwiched between the other two sets of groove forming portions. Then, the steel ball 193 and the two steel balls (not shown) roll to the deepest part of the fourth groove forming portion 191a formed in the case 191 and the other two groove forming portions. The plunger 194 rotates according to this rolling and slides toward the base 195 side as shown in FIG. 11 (b). When the energization of the coil 198 is stopped, the state shown in FIG. 11A is restored by the elastic force of the return spring 197. As described above, the rotary solenoid having the ball race configuration can directly apply the plunger and base configurations of the linear solenoid. For example, as in the plunger 194 and the base 195, irregularities are formed on the surfaces facing each other so that a large thrust can be obtained immediately after the start of energization of the coil 198, so that the thrust characteristics are brought closer to the optimum ones. Is easy.

By the way, when the shaft 196 is fixed to the plunger 194 as in the rotary solenoid 190, the shaft 196 always slides in the central axis direction during operation. However, depending on the structure of the device on which the rotary solenoid is mounted, the movement of the shaft in the direction of the central axis becomes stress, which may reduce the reliability of the device to be mounted. If the inclination angle of the groove forming portion is made very gentle, the stroke length of the shaft in the central axis direction can be made very small, but the torque is greatly reduced. Further, when a large torque is required, the stroke length of the shaft in the central axis direction is often long, which poses a serious problem.

Japanese Unexamined Patent Publication No. 2012-199457

In order to solve the above problems, it is an object of the present invention to provide a rotary solenoid having a configuration in which the shaft does not move linearly in the axial direction and does not hinder the increase in torque.

The invention according to claim 1 is made entirely or partially of a magnetic material, is formed in a substantially cylindrical shape, and has through holes formed in the first end face and the second end face, respectively. A case, a coil provided inside the case, a base fixed to the case or formed integrally with the case, and when the coil is energized, the base is attracted to the base. The rotation of the plunger is restricted by being fixed to the case or the base and directly or indirectly contacting the plunger provided so as to move directly to the second end surface side of the case. The rotation restricting member and the first end portion and the portion in the vicinity thereof are fixed to the plunger and are provided so as to protrude from the through hole opened in the first end surface of the case. The shaft and the central axis of the first shaft are aligned with each other, and the first end portion faces the second end portion of the first shaft and the second end portion is opposed to the second end portion. A second shaft whose end is provided so as to protrude from the through hole opened in the second end surface of the case, and the first shaft which is fixed to the case or the base and is fixed to the case or the base. A first bearing that supports linear movement and a second bearing that is fixed to the case or the base and rotatably supports the second shaft, and a substantially disk-shaped or substantially annulus-shaped And is fixed to the second end of the first shaft and its vicinity, and gradually becomes deeper in the surface on the second end surface side of the case in a predetermined rotation direction. A first groove component in which a plurality of arcuate grooves are formed, and a first end portion of the second shaft and a portion in the vicinity thereof, which are formed in a substantially disk shape or a substantially ring plate shape. A plurality of arcuate shapes that are fixed so as to face the first groove constituent member and gradually deepen in a predetermined rotation direction, and that face the plurality of grooves of the first groove constituent member. The second groove constituent member in which the groove is formed, the plurality of grooves of the first groove constituent member, and the plurality of grooves of the second groove constituent member are respectively arranged, and the first. By rolling the plurality of grooves of the first groove constituent member and the plurality of grooves of the second groove constituent member as trajectories, the second groove configuration is centered on the central axis of the second shaft. A plurality of rolling elements for rotating the members, provided inside the case, and directly or indirectly hitting the second groove constituent member. The rotary solenoid is characterized by having a linear motion regulating member that regulates the linear motion of the second groove constituent member by contacting the second groove constituent member.

The invention according to claim 2 is characterized in that, in the invention according to claim 1, the linear motion restricting member also has a function as a bearing that rotatably supports the second groove constituent member. It is a rotary solenoid.

The invention according to claim 3 is the invention according to claim 1 or 2, wherein the first groove constituent member is a first recess forming plate on which the plurality of grooves are formed, and the first groove forming plate. A first reinforcing plate, which is fixed to the surface on the first end surface side of the case, and an opening is formed in each of the portions corresponding to the plurality of grooves, and the first reinforcing plate. A rotary characterized in that the plate is fixed and the through hole formed in the center is provided with a first holding member in which the second end portion of the first shaft and a portion in the vicinity thereof are press-fitted. It is a solenoid.

The invention according to claim 4 is the invention according to claim 1 or 2, wherein the second groove constituent member includes a second recess forming plate on which the plurality of grooves are formed and the second groove forming plate. A second reinforcing plate fixed to the surface of the concave portion forming plate on the second end surface side of the case, and an opening is formed in each of the portions corresponding to the plurality of grooves, and the second reinforcing plate. A rotary characterized in that the plate is fixed and a through hole formed in the center is provided with a second holding member in which the first end portion of the second shaft and a portion in the vicinity thereof are press-fitted. It is a solenoid.

The invention according to claim 5 is the inside of the case and is closer to the second end face side of the case than the coil in the invention according to any one of claims 1 to 4. Another coil provided at the position and the inside of the case, which is provided at a position closer to the second end surface side of the case than the base, and fixed to the case or with the case. Another base integrally formed and the inside of the case, which is provided at a position closer to the first end face side of the case than the other base, and the first shaft is fixed. The rotary solenoid is characterized by further having another plunger provided so as to be attracted to the other base and linearly move when the other coil is energized.

The invention according to claim 6 is the invention according to claim 5, wherein the base has a through hole formed in the center, and the first bearing press-fitted into the through hole of the base and the case. It is a rotary solenoid characterized by further having a second bearing press-fitted into the through hole of the second end surface of the above.

The invention according to claim 7 is the invention according to any one of claims 1 to 4, which is inside the case and is more than the second groove constituent member of the case. Another coil provided at a position on the end face side of the case, and a position inside the case that is closer to the second end face side of the case than the second groove constituent member, and said It is provided at another base fixed to the case or integrally formed with the case, and at a position inside the case, which is closer to the second end surface side of the case than the other base. In addition, the second shaft is fixed and further has another plunger provided so that a suction force is generated between the second shaft and the other base when the other coil is energized. It is a rotary solenoid characterized by.

The invention according to claim 8 is the invention according to claim 7, wherein the first bearing press-fitted into the through hole of the first end face of the case and the second end face of the case. It is a rotary solenoid characterized by further having a second bearing press-fitted into the through hole of the above.

The invention according to claim 9 is the invention according to claim 7 or 8, wherein in the other plunger, the edge region of the end face on the second end face side of the case is the second end face of the case. It is a rotary solenoid characterized by protruding toward the end face side.

The invention according to claim 10 is the invention according to claim 9, wherein the case is an inner surface surface which is a back surface of the second end surface, and a peripheral region of the through hole is on the other plunger side. It is a rotary solenoid characterized by being protruding.

According to the invention of claim 1, since the plunger and the first shaft fixed to the plunger are restricted in rotation by the rotation regulating member, when the coil is energized, the plunger and the first shaft fixed to the plunger are placed on the second end surface side of the case. It moves straight. Since the first groove constituent member fixed to the first shaft also moves directly to the second end face side of the case, the second groove constituent member is rotated while the plurality of rolling elements roll, but the second Since the groove constituent member of No. 1 is regulated by the linear motion regulating member in the linear motion, it does not move in the axial direction. Therefore, only the power of the rotary motion can be obtained without the shaft moving linearly in the axial direction. Further, even when the torque is increased by means such as increasing the total length of the plunger or increasing the number of turns of the coil, the above-mentioned configuration can be adopted as it is. Since this configuration does not hinder the increase in torque, this configuration can be applied to a large rotary solenoid or the like without any problem.

According to the invention of claim 2, since the linear motion regulating member is a thrust bearing that supports the rotation of the second groove constituent member while regulating the linear motion, the direct force is converted into torque more efficiently. Will be done.

According to the third aspect of the present invention, the first groove constituent member is composed of three members, a first recess forming plate, a first reinforcing plate, and a first holding member. The thickness of the recess forming plate can be made thin, and a relatively deep groove can be easily formed. Further, since the first recess-forming plate is reinforced by the first reinforcing plate, it does not deform even if the thrust of the plunger is made very large. Further, since the first reinforcing plate is not fixed to the first shaft but is fixed via the first holding member, the first recess forming plate and the first reinforcing plate are fixed to the first shaft. It becomes easy to fix it firmly while making it orthogonal to each other accurately.

According to the invention of claim 4, since the second groove constituent member is composed of three members, a second recess forming plate, a second reinforcing plate, and a second holding member, the second The thickness of the recess forming plate can be made thin, and a relatively deep groove can be easily formed. Further, since the second recess forming plate is reinforced by the second reinforcing plate, even if the thrust of the plunger is made very large, it will not be deformed. Further, since the second reinforcing plate is not fixed to the second shaft but is fixed via the second holding member, the second recess forming plate and the second reinforcing plate are fixed to the second shaft. It becomes easy to fix it firmly while making it orthogonal to each other accurately.

According to the invention of claim 5, since the thrust is generated by the two plungers, the torque output from the second shaft can be significantly increased.

According to the invention of claim 6, even if it is a relatively long solenoid provided with two plungers, it is only necessary to provide one bearing for each of the first shaft and one bearing for the second shaft, and the rotary solenoid is provided. Can be operated smoothly.

According to the invention of claim 7, since the thrust is generated by the two plungers, the torque output from the second shaft can be significantly increased.

According to the invention of claim 8, even if it is a relatively long solenoid provided with two plungers, it is only necessary to provide one bearing for each of the first shaft and one bearing for the second shaft, and the rotary solenoid is provided. Can be operated smoothly.

According to the invention of claim 9, in another plunger, the area of the portion that contributes as a magnetic path by the edge region of the end face on the second end face side of the case protruding toward the second end face side of the case. Can be increased, and the thrust can be further increased.

According to the invention of claim 10, since the peripheral region of the through hole protrudes to another plunger side on the inner surface surface which is the back surface of the second end surface of the case, the first and second through holes are formed. The length of the shaft in the central axis direction can be increased, and a long bearing can be press-fitted through the through hole.

It is sectional drawing in the state before energization of the rotary solenoid which concerns on 1st Embodiment of this invention. It is sectional drawing in the state after energization of the rotary solenoid which concerns on 1st Embodiment of this invention. A state before energization of the rotary solenoid according to the first embodiment of the present invention is shown, (a) is a plan view, (b) is a plan view, and (c) is a bottom view. FIG. 1 is a cross-sectional view (1) of each case component of the rotary solenoid according to the first embodiment of the present invention, (a) is a cross-sectional view of the first case component, and (b) is a second case configuration. It is sectional drawing of a member. FIG. 2 is a cross-sectional view (2) of each case component of the rotary solenoid according to the first embodiment of the present invention, (c) is a cross-sectional view of a third case component, and (d) is a fourth case configuration. It is sectional drawing of a member. It is a figure (1) which shows the power conversion means of the rotary solenoid which concerns on 1st Embodiment of this invention, (a) is a plan view, (b) is a front view, (c) is a bottom view. It is a figure (2) which shows the power conversion means of the rotary solenoid which concerns on 1st Embodiment of this invention, (d) is the cross-sectional view taken along line AA, (e) is the cross-sectional view taken along line BB, (f). ) Is a perspective view of the second groove constituent member and the steel ball. It is explanatory drawing which shows the outline of the power conversion in the rotary solenoid which concerns on 1st Embodiment of this invention. It is sectional drawing in the state before energization of the rotary solenoid which concerns on 2nd Embodiment of this invention. It is sectional drawing in the state before energization of the rotary solenoid which concerns on 3rd Embodiment of this invention. A rotary solenoid according to the prior art is shown, (a) is a cross-sectional view before energization, and (b) is a cross-sectional view after rotation by energization.

FIG. 1 is a cross-sectional view of the rotary solenoid according to the first embodiment of the present invention in a state before energization. In FIG. 1, 10 is a rotary solenoid, 15 is a power conversion means, 19 is a steel ball, 21 is a first recess forming plate, 25 is a first reinforcing plate, 29b is a rivet, and 31 is a second recess forming plate. 33 is a fifth groove forming portion, 35 is a second reinforcing plate, 40 is a first case component, 44 is a press-fit end region, 45 is a second case component, and 46 is a first press-fit. The end region and the first base region, 47 is the intermediate region, 48 is the second press-fit end region, 50 is the third case component, 51 is the first press-fit end region, and 53 is the second. Base region, 55 is the second press-fitting end region, 56 is the fourth case component, 57 is the thick side end region, 58 is the thick side intermediate region, 59 is the thin side end region, 60. Is the first plunger, 60a is the first shaft press-fitting through hole, 60b is the bearing hole for the rotation control pin, 61 is the second plunger, 61a is the first shaft press-fitting through hole, and 62 is the first shaft. , 63a is the first end and its vicinity, 63b is the middle part, 63c is the second end and its vicinity, 64 is the first holding member, 64a is the large diameter part, 64b is the small diameter part, 65. Is the second holding member, 65a is the small diameter part, 65b is the large diameter part, 66 is the second shaft, 67a is the first end and its vicinity, 67b is the middle part, 67c is the second end and In the vicinity thereof, 68 is a rotation control pin, 69 is a rotation control pin bearing, 70 is a first coil, 71 is a first coil bobbin, 72 is a second coil, 73 is a second coil bobbin, and 74 is a first coil. Bearing, 75 is a linear motion control member, and 76 is a second bearing. Further, FIG. 2 is a cross-sectional view of the rotary solenoid according to the first embodiment of the present invention in a state after being energized. The reference numerals used in FIG. 2 are all the same as those used in FIG. In addition, FIG. 3 shows a state before energization of the rotary solenoid according to the first embodiment of the present invention, (a) is a plan view, (b) is a plan view, and (c) is a bottom view. .. In FIG. 3, 14 is a case, 14a is a first end face, 14b is a second end face, and other reference numerals are the same as those in FIG. Further, FIG. 8 is an explanatory diagram showing an outline of power conversion in the rotary solenoid according to the first embodiment of the present invention. The reference numerals used in FIG. 8 are all the same as those used in FIG. In the rotary solenoid 10, the central axes of the first shaft 62 and the second shaft 66 are the same, and further, the first plunger 60, the second plunger 61, and the first case component 40 , The second case component 45, the third case component 50, the fourth case component 56, the central axes of the first coil 70 and the second coil 72 are also the first shaft 62 and the second shaft. It coincides with the central axis with 66. Therefore, when the term "central axis" is used in the following description, it refers to the central axis of these constituent members including the first shaft 62 and the second shaft 66.

First, an outline of the rotary solenoid 10 according to the first embodiment of the present invention will be described. The rotary solenoid 10 has a so-called ball race configuration, and converts the power generated by linear motion into the power generated by rotation and outputs the power. That is, as shown in FIG. 3, in the rotary solenoid 10, the case 14 is formed in a substantially cylindrical shape, and the end portion of the first shaft 62 and its vicinity portion 63a project from the first end surface 14a to the outside. The second end portion of the second shaft 66 and its vicinity portion 67c project from the second end surface 14b to the outside. Further, as shown in FIG. 8, the rotary solenoid 10 transfers the power generated by the direct motion of the two plungers of the first plunger 60 and the second plunger 61 to the power generated by the rotation of the second shaft 66 in the power conversion means 15. It is configured to be converted to and output. Such power conversion is the same as that of the rotary solenoid according to the prior art, but in the rotary solenoid 10 according to this embodiment, the second shaft 66 does not protrude during operation, that is, from the state shown in FIG. It is characterized in that it does not move linearly in the direction of its central axis in the process of becoming a state as shown in 2. In addition, it can be said that the power conversion means 15 is not exposed to the outside of the case as in the rotary solenoid according to the prior art described in Japanese Patent Application Laid-Open No. 2012-199457.

Subsequently, each member constituting the rotary solenoid 10 according to the first embodiment will be described in detail. FIG. 4 is a cross-sectional view (1) of each case component of the rotary solenoid according to the first embodiment of the present invention, (a) is a cross-sectional view of the first case component, and (b) is a first. It is sectional drawing of 2 case constituent members. In FIG. 4, 41 is a thick side end region, 41a is a through hole for a first shaft, 41b is a through hole for a rotation control pin, 42 is a thick side intermediate region, and 42a is a hollow portion for a first plunger. 43 is a thin-walled intermediate region, 43a is a hollow portion for a first coil bobbin, 44a is a hollow portion for a second case component, 49a is a through hole for a first shaft bearing, and 49b is a hollow portion for a second plunger. Yes, the other symbols are the same as those in FIG. Further, FIG. 5 is a cross-sectional view (2) of each case component of the rotary solenoid according to the first embodiment of the present invention, and FIG. 5 (c) is a cross-sectional view of the third case component, (d). Is a cross-sectional view of the fourth case component. In FIG. 5, 51a is a first press-fitting hollow portion, 52 is a wall-thick side intermediate region, 52a is a second coil bobbin hollow portion, 53a is a first shaft through hole, 54 is a thin-walled intermediate region, 54a. Is a hollow portion for driving force conversion means, 55a is a hollow portion for a second press-fitting, 57a is a through hole for a second shaft, 58a is a hollow portion for a second shaft bearing, and other reference numerals are the same as those in FIG. Show things. Further, FIG. 6 is a view (1) showing the power conversion means of the rotary solenoid according to the first embodiment of the present invention, (a) is a plan view, (b) is a front view, and (c) is a front view. It is a bottom view. In FIG. 6, 18 is a steel ball, 20 is a first groove constituent member, 22 is a first groove forming portion, 23 is a second groove forming portion, 24 is a third groove forming portion, and 26 is a first groove forming portion. An opening, 27 is a second opening, 28 is a third opening, 29a and 29c are rivets, 30 is a second groove component, 32 is a fourth groove forming portion, and 34 is a sixth groove forming. Part, 36 is a fourth opening, 37 is a fifth opening, 38 is a sixth opening, 39a, 39b and 39c are rivets, and other reference numerals are the same as those in FIG. In addition, FIG. 7 is a diagram (2) showing a power conversion means of the rotary solenoid according to the first embodiment of the present invention, (d) is a sectional view taken along line AA, and (e) is a B-. A cross-sectional view taken along line B, (f) is a perspective view of the second groove constituent member and the steel ball. In FIG. 7, 17 is a steel ball, 21a is a press-fitting opening, 25a is a press-fitting opening, 31a is a press-fitting opening, 35a is a press-fitting opening, 64c and 65c are press-fitting openings, and others. The reference numerals are the same as those in FIGS. 1 and 6.

As shown in FIGS. 1 and 2, the rotary solenoid 10 includes a first plunger 60 and a second plunger 61 arranged in series in the central axis direction. In the first plunger 60 and the second plunger 61, a first shaft press-fitting through hole 60a and a first shaft press-fitting through hole 61a are formed along the central axis, and these through holes are further formed. The intermediate portion 63b of the first shaft 62 is fixed by press fitting. Further, the first plunger 60 and the second plunger 61 are arranged in the hollow portions of the first coil 70 and the second coil 72, respectively. As will be described later, since the first plunger 60 and the second plunger 61 move linearly by energizing the first coil 70 and the second coil 72, the first shaft 62 also moves linearly. , Unlike the rotary solenoid according to the prior art, it does not move linearly while rotating. Further, in the first shaft 62, the power conversion means 15 is connected to the second end portion and the vicinity portion 63c thereof.

The power conversion means 15 has a function of converting the linear motion of the first shaft 62 into the rotational motion of the second shaft 66 and outputting the power conversion means 15. That is, as shown in FIG. 6, the power conversion means 15 has a first groove constituent member 20 connected to the first shaft 62 and a second groove constituent member connected to the second shaft 66. It has 30 and. As shown in FIGS. 6 (a) and 7 (d) and 7 (e), the first groove constituent member 20 includes a first recess forming plate 21, a first reinforcing plate 25, and a first holding plate. It includes a member 64. Similarly, the second groove constituent member 30 includes a second recess forming plate 31, a second reinforcing plate 35, and a second holding member 65. Steel balls 17, 18 and 19 are arranged as rolling elements between the first recess forming plate 21 of the first groove constituent member 20 and the second recess forming plate 31 of the second groove constituent member 30. As will be described later, it has a function of converting linear motion into rotary motion by rolling. Each member constituting the first groove constituent member 20 and the second groove constituent member 30 is made of a non-magnetic material.

The first groove forming portion 21, the first groove forming portion 22, and the second groove forming portion 21 in which the second groove constituent member 30 side is a concave portion and the first plunger 60 and the second plunger 61 side are convex portions. The 23 and the third groove forming portion 24 are formed. The first groove forming portion 22, the second groove forming portion 23, and the third groove forming portion 24 are separated from the central axis by the same distance, that is, so as to draw concentric circles and are shown in FIG. It is formed so as to gradually become shallower in the direction of rotation. Further, the first groove forming portion 22, the second groove forming portion 23, and the third groove forming portion 24 are formed to have a width suitable for holding the steel balls 17, 18 and 19 in a rollable state. Has been done. Further, the first recess forming plate 21 is formed with an insertion opening 21a in the center so that the first holding member 64 and the first shaft 62 are inserted. The insertion opening 21a is formed so as to form a slight gap with the small diameter portion 64b of the first holding member 64, and the first holding member 64 is press-fitted into the insertion opening 21a. is not it.

The first reinforcing plate 25 reinforces the first recess forming plate 21 and has rigidity capable of resisting the stress applied to the first groove constituent member 20 by the linear motion of the first plunger 60 and the second plunger 61. It is provided to secure. The first reinforcing plate 25 is arranged on the second plunger 61 side of the first recess forming plate 21, and is further fixed to the first recess forming plate 21 by rivets 29a, 29b and 29c. .. The means for fixing the first reinforcing plate 25 to the first recess forming plate 21 is another means such as welding as long as it can withstand the stress from the first plunger 60 and the second plunger 61. It may be a means. Further, since the first recess forming plate 21 is brought into close contact with the first recess forming plate 21, the first groove forming portion 22, the second groove forming portion 23, and the third groove forming portion 24 are brought into close contact with each other. A first opening 26, a second opening 27, and a third opening 28 are formed at positions and ranges corresponding to the above. In addition, the first reinforcing plate 25 is fixed to the first holding member 64 by press-fitting the small diameter portion 64b of the first holding member 64 into the press-fitting opening 25a. The stepped surface between the large diameter portion 64a and the small diameter portion 64b of the first holding member 64 has a role of defining the press-fitting depth of the small diameter portion 64b.

The first holding member 64 has a function of fixing the first groove constituent member 20 to the first shaft 62. That is, the first holding member 64 has a press-fitting opening 64c formed in the center, and press-fits the second end of the first shaft 62 and its vicinity 63c into the press-fitting opening 64c. As a result, it is fixed to the first shaft 62. Further, since the thickness of the first holding member 64, that is, the length in the central axis direction is considerably longer than that of the first reinforcing plate 25, the first holding member 64 can be firmly fixed to the first shaft 62. As described above, the first recess forming plate 21 is fixed to the first shaft 62 via the first reinforcing plate 25 and the first holding member 64. By fixing the rotary solenoid 10 via the first reinforcing plate 25 and the first holding member 64, it is possible to prevent an excessive stress from being applied to the first recess forming plate 21 when the rotary solenoid 10 is assembled or used. , It becomes possible to firmly fix to the first shaft 62.

The second groove forming plate 31 has a first groove forming portion 32, a second groove forming portion 33, and a third groove forming portion 32 having a concave portion on the side of the first groove forming member 20 and a convex portion on the side of the fourth case constituent member 56. Groove forming portion 34 is formed. The first groove forming portion 32, the second groove forming portion 33, and the third groove forming portion 34 are separated from the central axis by the same distance, that is, so as to draw concentric circles and are shown in FIG. It is formed so as to gradually become deeper in the direction of rotation. Therefore, the first groove forming portion 32, the second groove forming portion 33, and the third groove forming portion 34 are the first groove forming portion 22 and the second groove of the first recess forming plate 21 facing each other. The forming portion 23 and the third groove forming portion 24 are formed so as to have a depth in the same direction. The depth of these grooves is set so that the steel balls 17, 18 and 19 roll smoothly. Further, the first groove forming portion 32, the second groove forming portion 33, and the third groove forming portion 34 are formed to have a width suitable for holding the steel balls 17, 18 and 19 in a rollable state. Has been done. Further, the second recess forming plate 31 is formed with an insertion opening 31a in the center so that the second holding member 65 and the second shaft 66 are inserted. The insertion opening 31a is formed so as to form a slight gap with the small diameter portion 65a of the second holding member 65.

The second reinforcing plate 35 reinforces the second recess forming plate 31, and by the direct motion of the first plunger 60 and the second plunger 61, the second groove configuration is formed via the first groove constituent member 20. It is provided to ensure rigidity that can withstand the stress applied to the member 30 side. The second reinforcing plate 35 is arranged on the side of the fourth case component 56 of the second recess forming plate 31, and is further fixed to the second recess forming plate 31 by rivets 39a, 39b and 39c. ing. The means for fixing the second reinforcing plate 35 to the second recess forming plate 31 is another means such as welding as long as it can withstand the stress from the first plunger 60 and the second plunger 61. It may be a means. Further, since the second recess forming plate 31 is brought into close contact with the second recess forming plate 31, the first groove forming portion 32, the second groove forming portion 33, and the third groove forming portion 34 are brought into close contact with each other. A fourth opening 36, a fifth opening 37, and a sixth opening 38 are formed at positions and ranges corresponding to the above. In addition, the second reinforcing plate 35 is fixed to the second holding member 65 by press-fitting the small diameter portion 65a of the second holding member 65 into the press-fitting opening 35a. The stepped surface between the large diameter portion 65b and the small diameter portion 65a of the second holding member 65 has a role of defining the press-fitting depth of the small diameter portion 65a.

The second holding member 65 has a function of fixing the second groove constituent member 30 to the second shaft 66. That is, the second holding member 65 has a press-fitting opening 65c formed in the center, and press-fits the first end portion of the second shaft 66 and its vicinity portion 67a into the press-fitting opening 65c. As a result, it is fixed to the second shaft 66. Further, since the thickness of the second holding member 65, that is, the length in the central axis direction is considerably longer than that of the second reinforcing plate 35, the second holding member 65 can be firmly fixed to the second shaft 66. As described above, the second recess forming plate 31 is fixed to the second shaft 66 via the second reinforcing plate 35 and the second holding member 65. By fixing the rotary solenoid 10 via the second reinforcing plate 35 and the second holding member 65, it is possible to prevent an excessive stress from being applied to the second recess forming plate 31 at the time of assembling or using the rotary solenoid 10. , It becomes possible to firmly fix to the second shaft 66.

Next, the case 14 will be described. The case 14 is made of a first case component 40, a second case component 45, a third case component 50, and a fourth case component 56 for the purpose of facilitating the assembly of the rotary solenoid 10. It is configured in a state of being divided into four members. Further, in the case 14, the first case constituent member 40, the second case constituent member 45, and the third case constituent member are formed of a magnetic material, and the first coil 70 and the second coil 72 can be attached to the case 14. When energized, it constitutes a magnetic circuit together with the first plunger 60 and the second plunger 61, and a part thereof functions as a base for the first plunger 60 and the second plunger 61. Further, the fourth case constituent member 56 is made of a non-magnetic material and has a function of supporting a member that rotates. The case 14 may be divided into five or more members depending on the configuration of the rotary solenoid.

The first case constituent member 40 is a member located on the most first end surface 14a side of the case 14, and is formed in a substantially bottomed cylindrical shape as shown in FIG. 4A. The thick side end region 41 is formed with a first shaft through hole 41a and a rotation control pin through hole 41b that are open to the first end surface 14a. The first shaft through hole 41a is formed to insert and project the first shaft 62. Although the first shaft through hole 41a is not provided with a bearing for supporting the linear motion of the first shaft 62, the bearing is press-fitted when the total length of the rotary solenoid 10 becomes considerably long. May be fixed. The rotation regulation pin through hole 41b is a hole for fixing the rotation regulation pin 68 that regulates the rotation of the first plunger 60 by press fitting. The wall-thickness side intermediate region 42 is formed to have a wall thickness suitable for accommodating the first plunger 60 in a slidable state in the hollow portion 42a for the first plunger. Further, the thin-walled intermediate region 43 is formed to have a wall thickness suitable for accommodating the first coil bobbin 71 in the hollow portion 43a for the first coil bobbin. The press-fit end region 44 is formed by cutting the meat on the inner peripheral surface in order to press-fit the second case component 45 into the hollow portion 44a for the second case component.

In the second case component 45, as shown in FIG. 4B, the first press-fit end region and the first base region 46 are press-fitted into the second case component hollow portion 44a. Further, the first press-fitting end region and the first base region 46 functions as a base for sucking the first plunger 60 when the first coil 70 is energized. Further, the intermediate region 47 is a portion exposed to the outside. The second press-fit end region 48 is press-fitted into the third case component 50. Further, the first bearing 74 that supports the first shaft 62 is press-fitted into the through hole 49a for the first shaft bearing. The second plunger 61 is housed in the hollow portion 49b for the second plunger.

As shown in FIG. 5C, the third case component 50 is formed in a substantially cylindrical shape. The first press-fitting end region 51 is formed by cutting the meat on the inner peripheral surface in order to press-fit the second case component 45 into the first press-fitting hollow portion 51a. The wall thickness side intermediate region 52 has a wall thickness suitable for forming the hollow portion 52a for the second coil bobbin that houses the second plunger 61 and the second coil 72. In addition, the thin-walled intermediate region 54 has a wall thickness suitable for forming the hollow portion 54a for the power conversion means for accommodating the power conversion means 15. Further, the second press-fitting end region 55 is formed by cutting the meat on the inner peripheral surface in order to press-fit the fourth case constituent member 56 into the second press-fitting hollow portion 55a. Further, a second base region 53 is formed like a partition wall between the hollow portion 52a for the second coil bobbin and the hollow portion 54a for the power conversion means. The second base region 53 functions as a base for sucking the second plunger 61 when the second coil 72 is energized. Further, a first shaft through hole 53a is formed in the center of the second base region 53. The first shaft through hole 53a is a hole through which the first shaft 62 is inserted.

The fourth case component 56 is made of a non-magnetic material. As shown in FIG. 5D, in the wall-thick side end region 57, the linear motion restricting member 75 is arranged on the second plunger 61 side, and the second shaft through hole 57a is formed in the center. The shaft 66 of 2 is inserted. The wall-thick side intermediate region 58 is a portion to be press-fitted into the second press-fitting end region 55. A second bearing 76 that rotatably supports the second shaft 66 is press-fitted into the hollow portion 58a for the second shaft bearing. The thin-walled side end region 59 is formed to secure a length required for press-fitting the second bearing 76 in the central axial direction.

Subsequently, other components of the rotary solenoid 10 will be described. As shown in FIGS. 1 and 3, in the intermediate portion 63b, the first plunger 60 is press-fitted into the portion of the case 14 near the first end surface 14a, and the second end surface of the case 14 is formed. The second plunger 61 is press-fitted into the portion closer to 14b. Further, in the intermediate portion 63b, a portion between the portion pressed into the first plunger 60 and the portion pressed into the second plunger 61 is inserted through the first bearing 74. The first end portion and the portion 63a in the vicinity thereof are portions protruding from the first end surface 14a of the case 14 to the outside of the case 14. The first groove constituent member 20 is fixed to the second end portion and the portion 63c in the vicinity thereof, and the first groove constituent member 20 is seconded when the first coil 70 and the second coil 72 are energized. Press directly on the shaft side of. The second shaft has an intermediate portion 67b inserted through the second bearing 76 and is rotatably supported by the second bearing 76. A second groove component 30 is fixed to the first end portion and a portion 67a in the vicinity thereof, and the steel balls 17, 18 and 19 roll when the first coil 70 and the second coil 72 are energized. Rotates with the second groove component 30. The second end portion and the portion 67c in the vicinity thereof are portions protruding from the second end surface 14b of the case 14 to the outside of the case 14, and are portions that transmit the rotational motion to the load device.

The rotation restricting pin 68 is fixed by press fitting the portion of the case 14 on the first end surface 14a side to the through hole 41b for the rotation restricting pin, while the portion of the case 14 on the second end surface 14b side is the rotation restricting pin. The bearing 69 is supported so that it can move linearly. The rotation regulation pin bearing 69 is fixed to the rotation regulation pin bearing hole 61b of the first plunger 60 by press fitting. Therefore, it can be said that the rotation regulation pin bearing 69 does not slidably support the rotation regulation pin 68, but is slidably supported by the rotation regulation pin 68. The rotation control pin 68 does not support the linear motion of the first shaft 62. The first coil 70 and the second coil 72 are formed in a substantially cylindrical shape by winding a coil wire around the first coil bobbin 71 and the second coil bobbin 73. Further, the first coil bobbin 71 is held so as to be surrounded by the first case constituent member 40 and the second case constituent member 45, and the second coil bobbin 73 is the second case constituent member. It is held so as to be surrounded by the 45 and the third case component 50. The linear motion restricting member 75 is provided in a state of being in contact with the second holding member 65 of the second groove constituent member 30, and supports the rotation of the second groove constituent member 30 while supporting the rotation of the second groove constituent member 30. The linear movement of the component 30 toward the second end surface 14b is restricted. It is highly desirable that the linear motion regulating member 75 be a thrust bearing from the viewpoint of efficiently converting the direct power applied from the first plunger 60 and the second plunger 61 into torque. Further, the linear motion regulating member 75 may be provided integrally with the second bearing 76 by connecting the second bearing 76 or incorporating the second bearing 76. With this configuration, the linear motion restricting member 75 resists the thrust load applied to the second bearing 76, that is, the force in the central axial direction applied by the linear motion of the first plunger 60 and the second plunger 61. Therefore, the second bearing 76 is supported. Further, if the second shaft 66 can be rotatably supported against both the thrust load and the radial load, the linear motion regulating member 75 and the second bearing 76 can be replaced with one member. You may.

Further, the operation of the rotary solenoid 10 according to the first embodiment of the present invention will be described. When the first coil 70 and the second coil 72 are not energized, as shown in FIG. 1, the first groove constituent member 20 and the second groove constituent member 30 are stationary in the state of being farthest from each other. is doing. When the first coil 70 and the second coil 72 are energized, the first plunger 60, the first press-fitting end region and the first base region 46 of the second case component 45, and the first case The magnetic flux returning to the first plunger 60 via the press-fitting end region 44 of the constituent member 40, the thin-walled intermediate region 43, and the thick-walled intermediate region 42, and the second plunger 61 and the third case constituent member. The second base region 53, the thick side intermediate region 52, the first press-fit end region 51, and the second press-fit end region 48 of the second case component 45. A magnetic flux returning to the plunger 61 is generated.

Due to these magnetic fluxes, the first plunger 60 is attracted to the first press-fitting end region and the first base region 46, the second plunger 61 is attracted to the second base region 53, and the first shaft. Together with 62, it moves straight to the second end surface 14b side of the case 14. A first groove constituent member 20 is fixed to a second end portion of the first shaft 62 and a portion 63c in the vicinity thereof. Therefore, the first groove constituent member 20 also moves linearly toward the second end surface 14b, approaches the second groove constituent member 30, and presses the second groove constituent member 30, but the rotation restricting pin 68 causes the first groove constituent member 20 to move directly. Since the rotation of the first plunger 60 is restricted, the first groove component 20 also does not rotate. The steel balls 17, 18 and 19 arranged between the first groove constituent member 20 and the second groove constituent member 30 are rolled by the pressing force from the first groove constituent member 20, and the first The groove component 30 of 2 also rotates. At this time, since the linear motion of the second groove constituent member 30 is restricted by the linear motion restricting member 75 toward the second end surface 14b, the second groove constituent member 30 is fixed to the second groove constituent member 30. The shaft 66 outputs only rotation.

As described above, in the rotary solenoid 10 according to the first embodiment of the present invention, the first plunger 60 and the second plunger 61 and the first shaft 62 fixed thereto are the rotation control pins 68. Since the rotation is regulated by, when the first coil 70 and the second coil 72 are energized, the case 14 directly moves to the second end surface 14b side. Since the first groove constituent member 20 fixed to the first shaft 62 also moves directly to the second end surface 14b side, the steel balls 17, 18 and 19 rotate while rotating the second groove constituent member 30. However, since the second groove constituent member 30 is restricted in linear motion by the linear motion regulating member 75, it does not move in the axial direction. Therefore, the second shaft 66 does not move linearly in the axial direction, and only the power of the rotary motion is obtained. Further, even when the torque is increased by means such as increasing the total length of the first plunger 60 and the second plunger 61, increasing the number of turns of the first coil 70 and the second coil 72, etc. The configuration of can be adopted as it is. Since this configuration does not hinder the increase in torque, this configuration can be applied to a large rotary solenoid or the like without any problem.

Further, since the first groove constituent member 20 is composed of three members, the first recess forming plate 21, the first reinforcing plate 25, and the first holding member 64, the first recess forming plate 21 The plate thickness can be made thin, and relatively deep grooves can be easily formed. Further, since the first recess forming plate 21 is reinforced by the first reinforcing plate 25, the first plunger 60 and the second plunger 61 are not deformed even if the thrusts are made very large. Further, since the first reinforcing plate 25 is not fixed to the first shaft 62 but is fixed via the first holding member 64, the first recess forming plate 21 and the first reinforcing plate 25 are first fixed. It becomes easy to firmly fix the shaft 62 of No. 1 while making it exactly orthogonal to the shaft 62. Similarly, since the second groove constituent member 30 is composed of three members, the second recess forming plate 31, the second reinforcing plate 35, and the second holding member 65, the second recess forming plate 31 The plate thickness can be made thin, and relatively deep grooves can be easily formed. Further, since the second recess forming plate 31 is reinforced by the second reinforcing plate 35, the first plunger 60 and the second plunger 61 are not deformed even if the thrusts are made very large. Further, since the second reinforcing plate 35 is not fixed to the second shaft 66 but is fixed via the second holding member 65, the second recess forming plate 31 and the second reinforcing plate 35 are fixed to the second. It becomes easy to firmly fix the shaft 66 of No. 2 while making it exactly orthogonal to the shaft 66. Further, since the thrust is generated by the first plunger 60 and the second plunger 61, the torque output from the second shaft 66 can be significantly increased. Further, also in the relatively long rotary solenoid 10 provided with two plungers, one first bearing 74 and one second bearing 76 are provided for each of the first shaft 62 and the second shaft 66. The rotary solenoid 10 can be operated smoothly only by itself.

Subsequently, the rotary solenoid according to the second and third embodiments of the present invention will be described. FIG. 9 is a cross-sectional view of the rotary solenoid according to the second embodiment of the present invention in a state before energization. In FIG. 9, 11 is a rotary solenoid, 11a is a first end face, 11b is a second end face, 80 is a first case component, 81 is a wall thickness region, 81a is a through hole for a first shaft bearing, 82. Is a thin region, 83 is a second case component, 84 is a partition and a first base region, 84a is a through hole for a first shaft, 85 is a first intermediate region, and 86 is a first press-fitting end. Region, 87 is the second intermediate region, 88 is the second press-fitting end region, 89 is the third case component, 90 is the intermediate region, 90a is the through hole for the first shaft bearing, 91 is the first. The press-fitting end region, 92 is the second press-fitting end region and the second base region, 92a is the small diameter region, 93 is the fourth case component, 94 is the bottom region, and 94a is the second shaft. Bearing through hole, 94b is bottom surface, 94c is annular protrusion, 95 is thick side intermediate region, 95a is second plunger hollow region, 96 is thin wall side intermediate region, 96a is second coil bobbin hollow portion, 97 is the press-fitting end region, 98 is the second plunger, 98a is the second shaft press-fitting through hole, 99 is the annular protrusion, 100 is the first coil, 101 is the first coil bobbin, 102 is the second. 103 is the second coil bobbin, 104 is the first shaft, 105a is the first end and its vicinity, 105b is the intermediate part, 105c is the second end and its vicinity, 106 is the second. The shaft, 107a is the first end and its vicinity, 107b is the intermediate part, 107c is the second end and its vicinity, 108 is the first shaft bearing, and 109 is the shaft bearing and linear motion control member. Yes, the other reference numerals are the same as those in FIG. Further, FIG. 10 is a cross-sectional view of the rotary solenoid according to the third embodiment of the present invention in a state before energization. In FIG. 10, 12 is a rotary solenoid, 12a is a first end face 12b is a second end face, 110 is a first case component, 111 is a wall thickness region, 111a is a through hole for a first shaft bearing, and 111b is. Rotation control pin through hole, 112 is thin area, 113 is press-fit end area, 114 is plunger, 114a is first shaft press-fit through hole, 114b is rotation control pin bearing hole, 115 is coil, 116 is Coil bobbin 117 is the first shaft, 118a is the first end and its vicinity, 118b is the middle part, 118c is the second end and its vicinity, 199 is the bearing for the first shaft, and others. The reference numerals of are the same as those in FIG.

In the rotary solenoid 11 according to the second embodiment of the present invention, the first plunger 60 and the second plunger 98 are fixed to the first shaft 104 and the second shaft 106 by press fitting, respectively. The first shaft 104 and the second shaft 106 are configured to press against each other. That is, the first end portion of the second shaft 106 and its vicinity portion 107a are fixed to the second holding member 65, and the second end portion and its vicinity portion 107c project to the outside. It is the same as the rotary solenoid 10. On the other hand, the intermediate portion 107b is press-fitted into the second shaft press-fitting through hole 98a of the second plunger 98, and the first end portion of the intermediate portion 107b and the portion near the intermediate portion 107a serve as a shaft bearing. It differs from the rotary solenoid 10 in that it is press-fitted into the linear motion regulating member 109. Further, in the first case constituent member 80, a thin region 82 is continuously formed in the thick region 81, and the thin region 82 is press-fitted into the first press-fit end region 86 of the second case constituent member 83. ing. Further, in the second case component 83, the partition wall portion and the first base region 84 in which the first shaft through hole 84a for inserting the first shaft 104 is formed, and the first coil bobbin 101 are housed. The first intermediate region 85 formed to provide the hollow portion to be formed and the second intermediate region 87 formed to provide the hollow portion for accommodating the power conversion means 15 are the third intermediate regions 87 of the rotary solenoid 10. It has the same structure as the case component. However, the difference is that 91 of the third case component 89 is press-fitted into the second press-fitting end region 88 with the first press-fitting end region 88. In addition, as described above, since the linear motion directions of the two plungers are opposite to each other, the partition wall portion and the first base region 84 of the second case component 83 functions as a base for the first plunger 60. The point is also different.

Further, the second press-fitting end region and the second base region 92 formed continuously in the intermediate region 90 of the third case constituent member 89 are the press-fitting end region of the fourth case constituent member 93. It is press-fitted against 97. The shaft bearing and linear motion restricting member 109 is press-fitted into the first shaft bearing through hole 90a of the third case component 89 until it comes into contact with the small diameter region 92a. As described above, since the linear motion directions of the two plungers are opposite to each other, the difference is that the second press-fitting end region and the second base region 92 function as a base for the second plunger 98. ing. A second shaft bearing through hole 94a is formed in the center of the bottom region 94 of the fourth case component 93, and the second bearing 76 is press-fitted into the second shaft bearing through hole 94a. .. Further, on the bottom surface 94b of the fourth case component 93, a peripheral region of the second shaft bearing through hole 94a is formed as an annular protrusion 94c protruding toward the first end surface 11a. The annular protrusion 94c is formed so that the through hole 94a for the second shaft bearing is required to fix the second bearing 76 by press fitting in the central axial direction. Further, a second plunger hollow portion 95a for accommodating the second plunger 98 is formed in the thick side intermediate region 95, and a second coil bobbin 103 for accommodating the second coil bobbin 103 is formed in the thin wall side intermediate region 96. A hollow portion 96a for a coil bobbin is formed.

The first coil 100 and the second coil 102 are formed in a substantially cylindrical shape by winding a coil wire around the first coil bobbin 101 and the second coil bobbin 103. Further, the first coil 100 and the second coil 102 are set to ampere-turns so that the thrusts of the first plunger 60 and the second plunger 98 are equal to or substantially equal to each other when the first coil 100 and the second coil 102 are energized. Has been done. Further, in the first shaft 104, the first end portion and the portion 105a in the vicinity thereof are supported by the first shaft bearing 108, and the intermediate portion 105b has no bearing, which is the same as that of the first shaft 62 of the rotary solenoid 10. It's different. On the other hand, the point that the second end portion and the portion 105c in the vicinity thereof are fixed to the first holding member 64 is the same as that of the first shaft 62. An annular protrusion 99 is formed on the second end surface 11b side of the second plunger 98. The annular protrusion 99 is formed in order to secure an area facing the thick side intermediate region 95 of the second plunger 98 as much as possible and to increase the amount of magnetic flux flowing between them. The shaft bearing and linear motion regulating member 109 supports the rotation of the second shaft 106 and regulates the second shaft 106 so that it does not linearly move toward the second end surface 11b.

When the rotary solenoid 11 configured as described above has the first coil 100 and the second coil 102, a suction force that causes the first plunger 60 and the second plunger 98 to face each other acts on the rotary solenoid 11, and the second coil 102 is used. The shaft 104 of 1 and the shaft 106 of the second shaft press against each other. Since the first shaft 104 is not rotated by the rotation control pin 68, while the second shaft 106 is provided to rotate, the force that the first plunger 60 and the second plunger 98 press against each other is applied. The rolling motion of the steel ball 19 or the like is converted into the rotational motion of the second shaft 106. Since the shaft bearing and linear motion regulating member 109 is provided, the second shaft 106 does not linearly move to the second end surface 11b side.

As described above, according to the rotary solenoid 11 according to the second embodiment of the present invention, the same effect as that of the rotary solenoid 10 can be obtained. Further, by forming the annular protrusion 99 on the second plunger 98, the area of the portion of the second plunger 98 that contributes as a magnetic path can be increased, and the thrust can be further increased. Further, on the bottom surface 94b of the fourth case component 93, the peripheral region of the through hole 94a for the second shaft bearing forms an annular protrusion 94c protruding toward the first end surface 11a, so that the second shaft bearing The length of the through hole 94a in the central axis direction can be increased, and a relatively long bearing can be press-fitted into the through hole 94a for the second shaft bearing.

Next, as shown in FIG. 10, the rotary solenoid 12 according to the third embodiment of the present invention is provided with only one of the plungers 114. A first shaft press-fitting through hole 114a is formed in the plunger 114 along the central axis, and a bearing hole 114b for a rotation control pin is formed on the side thereof. Further, since one plunger is provided, only the coil 115 formed on the coil bobbin 116 is provided. Further, in the first shaft 117, the intermediate portion 118b is press-fitted into the first shaft press-fitting through hole 114a of the plunger 114, the first end portion and the vicinity portion 118a project to the outside, and the second end A portion and a portion 118c in the vicinity thereof are fixed to the first holding member 64. Further, the first case component 110 is formed with a first shaft bearing through hole 111a and a rotation control pin through hole 111b that are open in the wall thickness region 111. The first shaft bearing 119 that supports the first shaft 117 is press-fitted into the first shaft bearing through hole 111a, and the rotation regulation pin 68 is press-fitted into the rotation regulation pin through hole 111b. .. Further, the thin region 112 of the first case component 110 has a hollow portion as a space for accommodating the plunger 114. In addition, the press-fit end region 113 is press-fitted into the first press-fit end region 51 of the third case component 50. As described above, the present invention can also be applied to a rotary solenoid having only one plunger.

The present invention is not limited to the contents described above. For example, in the rotary solenoid according to the second embodiment of the present invention, the first plunger 60 and the second plunger 98 are connected in series. Various configurations are possible as long as they do not deviate from the scope described in each claim, such as providing a total of four plungers, one for each.

10 Rotary solenoid 11 Rotary solenoid 11a First end face 11b Second end face 12 Rotary solenoid 12a First end face 12b Second end face 14 Case 14a First end face 14b Second end face 15 Power conversion means 17 Steel ball 18 Steel Ball 19 Steel ball 20 First groove constituent member 21 First recess forming plate 21a Insertion opening 22 First groove forming portion 23 Second groove forming portion 24 Third groove forming portion 25 First reinforcing plate 25a Press-fitting opening 21a Insertion opening 26 First opening 27 Second opening 28 Third opening 29a Rivet 29b Rivet 29c Rivet 30 Second groove component 31 Second recess forming plate 31a Insertion General opening 32 4th groove forming part 33 5th groove forming part 34 6th groove forming part 35 2nd reinforcing plate 35a Press-fitting opening 36 4th opening 37 5th opening 38 6th Opening 39a Rivet 39b Rivet 39c Rivet 40 First case component 41 Thick side end region 41a First shaft through hole 41b Rotation control pin through hole 42 Thick side intermediate region 42a For first plunger Hollow portion 43 Thin side intermediate region 43a Hollow portion for first coil bobbin 44 Press-fit end region 44a Hollow portion for second case component 45 Second case component 46 First press-fit end region and first Base region 47 Intermediate region 48 Second press-fitting end region 49a First shaft bearing through hole 49b Second plunger hollow portion 50 Third case component 51 First press-fitting end region 51a First 1 Press-fit hollow portion 52 Thick side intermediate region 52a Second coil bobbin hollow portion 53 Second base region 53a First shaft through hole 54 Thin side intermediate region 54a Hollow portion for power conversion means 55 Second Press-fit end region 55a Second press-fit hollow portion 56 Fourth case component 57 Thick side end region 57a Second shaft through hole 58 Thick side intermediate region 58a Second shaft bearing hollow portion 59 Thin end region 60 First plunger 60a First shaft press-fitting through hole 60b Rotation control pin bearing hole 61 Second plunger 61a First shaft press-fitting through hole 62 First shaft 63a First End and its vicinity 63b Intermediate 63c Second end and its vicinity 64 First holding member 64a Large diameter 64b Small diameter 64c Press-fitting opening 65 Second holding member 65a Small diameter 65b Large diameter 65c Press-fitting opening 66 Second shaft 67a First end and its vicinity 67b Intermediate 67c Second end and its vicinity 68 Rotation control pin 69 Rotation control pin bearing 70 1st coil 71 1st coil bobbin 72 2nd coil 73 2nd coil bobbin 74 1st bearing 75 Linear motion restricting member 76 2nd bearing 80 1st case component 81 Wall thickness region 81a 1st shaft Bearing hole 82 Thin region 83 Second case component 84 Partition and first base region 84a First shaft through hole 85 First intermediate region 86 First press-fit end region 87 Second Intermediate region 88 Second press-fit end region 89 Third case component 90 Intermediate region 90a First shaft bearing through hole 91 First press-fit end region 92 Second press-fit end region and second 2 Base region 92a Small diameter region 93 Fourth case component 94 Bottom region 94a Through hole for second shaft bearing 94b Bottom surface 94c Circular protrusion 95 Thickness side Intermediate region 95a Second plunger hollow portion 96 Thin side Intermediate region 96a Hollow portion for second coil bobbin 97 Press-fit end region 98 Second plunger 98a Second shaft press-fit through hole 99 Circular protrusion 100 First coil 101 First coil bobbin 102 Second coil 103 Second coil bobbin 104 First shaft 105a First end and its vicinity 105b Intermediate 105c Second end and its vicinity 106 Second shaft 107a First end and its vicinity 107b Intermediate 107c Second end and its vicinity 108 First shaft bearing 109 Shaft bearing and linear motion control member 110 First case component 111 Wall thickness region 111a First shaft bearing through hole 111b Rotation control pin through Hole 112 Thin region 113 Press-fit end region 114 Plunger 114a First shaft press-fit through hole 114b Bearing hole for rotation control pin 115 Coil 116 Coil bobbin 117 First shaft 118a First end and its vicinity 118b Intermediate part 118c Second end and its vicinity 119 First shaft bearing 190 Rotary solenoid 191 Case 191a Fourth groove forming part 192 Groove component 192a First groove forming part 193 Steel ball 194 Plunger 195 Base 196 Shaft 197 Restoration Return spring 198 Coil 199 1st shaft bearing

Claims (10)

A case in which all or part of the material is made of a magnetic material, a substantially cylindrical shape is formed, and through holes are formed in the first end face and the second end face, respectively.
With the coil provided inside the case,
With a base fixed to the case or integrally formed with the case,
When the coil is energized, a plunger is provided so as to be attracted to the base and directly move to the second end face side of the case.
A rotation regulating member that is fixed to the case or the base and regulates the rotation of the plunger by directly or indirectly contacting the plunger.
A first shaft fixed to the plunger and provided so that the first end portion and a portion in the vicinity thereof protrude from the through hole opened in the first end surface of the case.
The first shaft and the central axis are arranged so as to coincide with each other, the first end portion faces the second end portion of the first shaft, and the second end portion is said. A second shaft provided so as to protrude from the through hole opened in the second end face of the case, and a second shaft.
It is formed in a substantially disk shape or a substantially ring plate shape, is fixed to the second end portion of the first shaft and a portion in the vicinity thereof, and is fixed to the surface on the second end surface side of the case. , A first groove constituent member in which a plurality of arcuate grooves gradually deepening in a predetermined rotation direction are formed.
It is formed in a substantially disk shape or a substantially ring plate shape, and is fixed to the first end portion of the second shaft and a portion in the vicinity thereof so as to face the first groove constituent member. A second groove constituent member having an arc shape gradually deepening in a predetermined rotation direction and having a plurality of grooves facing the plurality of grooves of the first groove constituent member.
The plurality of grooves of the first groove constituent member and the plurality of grooves of the second groove constituent member are respectively arranged, and the plurality of grooves of the first groove constituent member and the first groove are arranged. A plurality of rolling elements that rotate the second groove constituent member around the central axis of the second shaft by rolling the plurality of grooves of the second groove constituent member as orbits.
It is characterized by having a linear motion regulating member provided inside the case and restricting the linear motion of the second groove constituent member by directly or indirectly contacting the second groove constituent member. Rotary solenoid. The rotary solenoid according to claim 1, wherein the linear motion restricting member also has a function as a bearing that rotatably supports the second groove constituent member. The first groove constituent member is fixed to the first recess-forming plate on which the plurality of grooves are formed and the surface of the first recess-forming plate on the first end surface side of the case, and is fixed to the surface. The first reinforcing plate having openings formed in the portions corresponding to the plurality of grooves, the first reinforcing plate, and the through hole formed in the center of the first reinforcing plate are fixed to the first reinforcing plate. The rotary solenoid according to claim 1 or 2, wherein the second end portion and a portion in the vicinity thereof include a first holding member press-fitted. The second groove constituent member is fixed to the second recess-forming plate on which the plurality of grooves are formed and the surface of the second recess-forming plate on the second end surface side of the case, and is fixed to the surface. The second reinforcing plate having openings formed in the portions corresponding to the plurality of grooves and the second reinforcing plate are fixed to the second reinforcing plate, and the through hole formed in the center of the second reinforcing plate is used for the second reinforcing plate. The rotary solenoid according to claim 1 or 2, wherein the first end portion and a portion in the vicinity thereof include a second holding member press-fitted. Another coil inside the case, which is provided at a position closer to the second end face side of the case than the coil, and the second coil inside the case, which is closer to the second end surface of the case than the base. With another base provided at a position on the end face side of the case and fixed to the case or integrally formed with the case.
It is provided inside the case at a position closer to the first end face side of the case than the other base, and the first shaft is fixed and the other coil is energized. The rotary solenoid according to any one of claims 1 to 4, further comprising another plunger provided so as to be attracted to the other base and move linearly. The base has a through hole formed in the center.
A first bearing press-fitted into the through hole of the base and
The rotary solenoid according to claim 5, further comprising a second bearing press-fitted into the through hole of the second end surface of the case. Another coil provided inside the case and at a position closer to the second end surface side of the case than the second groove component member.
It is provided inside the case at a position closer to the second end surface side of the case than the second groove constituent member, and is fixed to the case or integrally formed with the case. With another base,
It is provided inside the case at a position closer to the second end face side of the case than the other base, and the second shaft is fixed and the other coil is energized. The rotary solenoid according to any one of claims 1 to 4, further comprising another plunger provided so as to generate a suction force with the other base. .. A first bearing press-fitted into the through hole on the first end face of the case,
The rotary solenoid according to claim 7, further comprising a second bearing press-fitted into the through hole of the second end surface of the case. The rotary according to claim 7 or 8, wherein the other plunger has an edge region of the end face on the second end face side of the case projecting toward the second end face side of the case. solenoid. The rotary solenoid according to claim 9, wherein the case is an inner surface surface which is a back surface of the second end surface, and a peripheral region of the through hole projects toward the other plunger side.

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