JP3117673U - Linear actuator with stepping motor - Google Patents

Abstract

The present invention provides a linear operation device with a stepping motor that effectively converts a rotational motion of a motor into an axial linear motion.
A linear operation device attached to a stepping motor has a coil mounting base 11 provided with a conductive contact portion 12 and has at least one set of coils wound around the conductive contact portion 12 therein. A drive shaft unit 30 having a unit 10, a shaft column, a magnetic member mounted on the shaft column, and a screw rod that contacts the shaft column to form a threaded portion; a seat body; and a shaft on the seat body The sliding restriction unit 50 having a slide hole that is formed in the direction and forms at least one catching claw groove, and the slide hole of the sliding restriction unit 50 is formed in the axial direction and slides in the catching claw groove of the sliding restriction unit 50. An operating rod unit having a slide column that forms at least one stop pawl portion and a screw hole that causes the threaded portion of the screw rod of the drive shaft unit 30 to be screwed to displace the operating rod unit 70 in the axial direction. And a 70.
[Selection] Figure 1

Description

  The present invention relates to a linear actuator, and more particularly to a linear actuator with a stepping motor.

A typical stepping motor is a device that is usually designed to translate into axial linear motion, thereby achieving the same action as an electromagnetic valve. However, the stepping motor has an advantage that more positions can be easily controlled than the electromagnetic valve.
The above-mentioned stepping motor has a more complicated structure for converting it into linear motion, but it easily generates kinetic energy loss during the operation process, making it difficult to control precise operation and has room for improvement. .

In view of the above-mentioned drawbacks, the inventor has made extensive research and has come to obtain a linear actuator with the stepping motor of the present invention.
The main object of the present invention is to provide a linear actuator with a stepping motor capable of effectively converting the rotational motion of the motor into an axial linear motion by utilizing the structure of the present invention. .
The second object of the present invention is to provide a linear actuator that includes a stepping motor having advantages such as a reliable combination operation structure, simple combination of components, and reliable operation. That is.

  In order to achieve the above-described object, the linear actuator provided with the stepping motor provided by the present invention has a coil mounting base provided with a conductive contact portion, and has at least one set of the conductive contact portion in the interior thereof. A coil base unit for winding a coil, a shaft column, a magnetic member mounted on the shaft column, a drive shaft unit having a screw rod that abuts on the shaft column and forms a thread portion, a seat body, and A sliding regulation unit that is provided in the seat body in the axial direction and has a slide hole that forms at least one catching claw groove; and a slide column that is drilled in the axial direction in the slide hole of the sliding regulation unit, The slide column that forms at least one stop pawl portion that can freely slide in the stop pawl groove of the slide regulating unit, and the threaded portion of the screw rod of the drive shaft unit are screwed to move the operating rod unit in the axial direction. Strange And a hydraulic lever unit having a threaded hole for.

For a better understanding of the features of the present invention and the effects achieved, the following more preferred embodiments are described.
1 to 6 show a linear actuator having a stepping motor according to a more preferred embodiment of the present invention. The linear actuator accompanying the stepping motor of this embodiment includes a coil base unit 10, a drive shaft unit 30, a sliding regulation unit 50, an operating rod unit 70, and a cover unit 90.

The coil base unit 10 is connected to a coil mounting base 11 provided with a conductive contact portion 12 and the coil mounting base 11, and two sets of coils 15 are wound inside and connected to the conductive contact portion 12. There are two detent rollers 13 and a plurality of insertion terminals 17 in conductive contact.
The drive shaft unit 30 includes a shaft column 31 that forms an axis alignment portion 311 and a jig mounting hole 312, a magnetic member that is a magnetic cylinder 33 that is attached to the shaft column 31 in this embodiment, It has the contact part 351 embed | buried and embedded in the axial alignment part 311 of the axial pillar 31, and the screw rod 35 which has the thread part 353 which forms the screw thread connected with the applicable contact part 351. FIG.

  The sliding regulation unit 50 includes a seat body 51 provided with a bearing mounting hole 52, an extending cylindrical portion 53 that is in contact with the seat body 51, and an axial direction in the seat body 51. 56 is formed in a slide hole 55 that forms a plurality of engaging portions 58 in each axial direction, and in a bearing mounting hole 52 of the seat body 51, and is aligned with an alignment portion 311 of the drive shaft unit 30. And a bearing 59 provided with an alignment hole 591 corresponding to the slide hole 55.

  The operating rod unit 70 can be pierced in the axial direction in the slide hole 55 of the sliding regulation unit 50, and can form four slide pawl portions 73 and a slide wall plate 74 having a smaller diameter extending in each axial direction. 71, a head 75, a screw member 76 provided with a screw hole 761 that contacts the slide column 71, engages with the screw thread 353 of the drive shaft unit 30, and contacts the interlocking contact 79. And stretched ridges 77.

  The cover unit 90 includes a casing 91 that covers and accommodates the two detent rollers 13 and the coil mounting base 11, a convex column 93 that is inserted corresponding to the jig mounting hole 312 of the drive shaft unit 30, and the It has a plurality of engagement pieces 95 that can be inserted into the engagement portions 58 of the sliding regulation unit 50 and fixed to each other.

The operation and operation of this embodiment will be described below.
At the time of operation, as shown in FIG. 3, the conducting portion 12 of the coil base unit 10 is energized to generate a magnetic force in each of the coils 15 and cause a rotational motion to the shaft column 31 of the drive shaft unit 30. . In conjunction with this, the screw rod 35 rotates, and the screw thread portion 353 is screwed into the screw hole 761 of the screw member 76 of the operating rod unit 70 and is fixed by the sliding restriction unit 50, and each stop claw groove 56. Controls the slide wall plate 74 of the operating rod unit 70 so that the operating rod unit 70 does not rotate. Therefore, the operating rod unit 70 rotates corresponding to the screw rod 35 of the drive shaft unit 30 and generates an axial displacement having no rotating action. That is, this is the operating state of FIG. 4, thereby controlling another device (not shown).

  On the contrary, when the coil base unit 10 is energized and the drive shaft unit 30 is rotated in the opposite direction, the screw rod 35 of the drive shaft unit 30 is screwed, and the operating rod unit 70 is linearly moved in another direction. Can be displaced. That is, this is where the position shown in FIG. 3 is restored.

In addition, since this embodiment is a stepping motor capable of controlling the forward and reverse rotations and the number of forward and reverse rotations, the axial movement of the operating rod unit 70 in accordance with the control of the current switch and the operation of the structure. The position can be controlled and various device requirements can be achieved.
In the above embodiment, the shaft column of the drive shaft unit can be made of the same material as that of the magnetic member or the screw rod, and can be integrally formed, and the effect of further simplifying the manufacturing process can be achieved.

From the above description of the embodiment, the features of the present invention are as follows.
1. The present invention is a linear operation device attached to a stepping motor. By using the structure of the present invention, it is possible to effectively convert the rotational motion of the motor into a linear motion in the axial direction.
2. The present invention is a linear operation device attached to a stepping motor, and has excellent points such as a reliable combined operation structure, a simple combination of components and reliable operation.

1 is a three-dimensional exploded view showing a linear operating device with a stepping motor according to an embodiment of the present invention. 1 is a cross-sectional view illustrating a linear actuator having a stepping motor according to an embodiment of the present invention. 1 is a cross-sectional view illustrating a linear actuator having a stepping motor according to an embodiment of the present invention. It is a schematic diagram which shows the operation action of the linear actuator which attaches the stepping motor by the Example of this invention. FIG. 3 is an exploded view showing a local part of a linear actuator having a stepping motor according to an embodiment of the present invention. FIG. 4 is an exploded cross-sectional view showing a local part of a linear actuator having a stepping motor according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Coil base unit, 11 Coil mounting base, 12 Conducting part, 13 Detent roller, 15 Coil, 17 Insertion terminal, 30 Drive shaft unit, 31 Shaft pillar, 33 Magnetic cylinder, 35 Screw rod, 50 Sliding regulation unit , 51 Seat, 52 Bearing mounting hole, 53 Stretched cylinder part, 55 Slide hole, 56 Stop claw groove, 57 Groove stop part, 58 Engagement part, 59 Bearing, 70 Actuation rod unit, 71 Slide column, 73 Stop claw Part, 74 slide wall plate, 75 head, 76 screw member, 77 extension rod, 79 interlocking contact part, 90 cover unit, 91 casing, 93 convex column, 95 engagement piece, 311 axis alignment part, 312 jig mounting hole, 351 Contact part, 353 Thread part, 591 Alignment hole, 761 Screw hole

Claims (4)

A coil base unit having a coil mounting base provided with a conductive contact portion and winding at least one set of coils that are conductively connected to the conductive contact portion;
A drive shaft unit having a shaft column, a magnetic member mounted on the shaft column, and a screw rod that contacts the shaft column and forms a thread portion;
A sliding regulation unit having a seat body, and a slide hole which is formed in the seat body in an axial direction and forms at least one catching claw groove;
A slide column that can be drilled in an axial direction in a slide hole of the sliding regulation unit, and has a slide column that forms at least one locking claw portion that can freely slide in the locking claw groove of the sliding regulation unit. An actuating rod unit having a screw hole for screwing a screw thread portion of a screw rod of the drive shaft unit to displace the actuating rod unit in the axial direction;
A linear actuator having a stepping motor, comprising:   The linear actuator according to claim 1, wherein the magnetic member of the drive shaft unit is a magnetic cylinder provided on the shaft column.   The drive shaft unit includes an alignment portion, and the drive shaft unit is provided with an alignment hole that is pivotally connected to the alignment portion of the drive shaft unit for alignment. A linear actuator that accompanies the stepping motor according to claim 1. The sliding regulation unit further includes a groove stopper at one end of the stopper claw groove, and the operating rod unit is in axial contact with the stopper claw and is slidable on the groove stopper of the sliding restriction unit. The linear actuator according to claim 1, further comprising a plate.

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