JP2021050745A - Method for manufacturing damper member, damper member, and actuator - Google Patents

Abstract

To provide a method for manufacturing a damper member, which can manufacture a plurality of damper members having stable characteristics in a short time, and to provide a damper member and an actuator using the damper member.SOLUTION: In a step ST11, a tubular first member and a tubular second member surrounding the outer peripheral side of the first member are positioned on a manufacturing jig. In a step ST13, a gap between the outer peripheral surface of the first member and the inner peripheral surface of the second member is filled with a gel material. In steps ST14 to ST17, the gel material is cured to form a long gel-like damper member. In a step ST19, the long gel-like damper member is removed from the manufacturing jig together with the first member and the second member. In a step ST20, the long gel-like damper member is cut in the direction intersecting the axial direction of the first member and the second member to obtain a plurality of gel-like damper members.SELECTED DRAWING: Figure 9

Description

The present invention relates to a method for manufacturing a damper member, a damper member, and an actuator.

Actuators used in tactile devices and the like include a fixed body and a movable body, and a magnetic drive mechanism for driving the movable body, and the movable body and the fixed body are connected via a damper member. In the actuator of Patent Document 1, a fixed body and a movable body are connected by a gel-like damper member made of silicone gel or the like. This gel-like damper member has a plate shape and is connected to a movable body and a fixed body by a method such as adhesion.

Japanese Unexamined Patent Publication No. 2016-127789

Since the gel-like damper member itself has adsorptive properties, it is not easy to handle. For example, when a large gel-like damper member is manufactured, divided on a table, and then the divided gel-like damper members are adsorbed one by one by a suction head and tried to be conveyed, the gel-like damper member is adsorbed on the table. Therefore, there is a problem that the transportation cannot be easily performed. Further, since the silicone gel as a material has poor adhesiveness, the adhesive that can be used when adhesively fixing to a fixed body and a movable body is limited.

In Japanese Patent Application No. 2019-100964, the applicant of the present application adheres the gel-like damper member, which is a poorly adhesive member, by fixing the frame material to the gel-like damper member at the same time in the process of molding the gel-like damper member. We are proposing a manufacturing method that eliminates the need for a process and manufactures a damper member that is easy to handle.

In this manufacturing method, the tubular first member and the tubular second member surrounding the outer peripheral side of the first member are positioned on the manufacturing jig, and the outer peripheral surface of the first member and the inside of the second member are positioned. A gel material is filled in the gap between the peripheral surface and the gel material is cured to form a gel-like damper member. Then, by removing the gel-like damper member together with the first member and the second member from the manufacturing jig, a damper member in which the gel-like damper member and the frame material are integrated is manufactured.

However, in this manufacturing method, since the damper members are cast and handled one by one, it takes time to manufacture a plurality of damper members. Further, the gel material filled in the gap between the outer peripheral surface of the first member and the inner peripheral surface of the second member is lifted by the surface tension between the first member and the second member, and is lifted onto the surface of the gel material. There is a dent. Therefore, the shape of the damper member is not stable, and as a result, the characteristics such as the spring constant of the damper member are not stable.

The present invention has been made in view of the above circumstances, and is a method for manufacturing a damper member capable of manufacturing a plurality of damper members having stable characteristics in a short time, a damper member, and an actuator using the damper member. Is intended to provide.

The method for manufacturing a damper member of the present invention is between an outer peripheral surface of a tubular first member and an inner peripheral surface of a tubular second member positioned so as to surround the outer peripheral side of the first member. The gap is filled with a gel material, the gel material is cured to form a long gel-like damper member, and the long gel-like damper member intersects the axial direction of the first member and the second member. It is cut in the direction to form a plurality of gel-like damper members.

The damper member of the present invention comprises a tubular first member, a tubular second member surrounding the outer peripheral side of the first member, an outer peripheral surface of the first member, and an inner peripheral surface of the second member. A gel-like damper member formed in the gap between the members is provided, and the first member, the second member, and the gel-like damper member are at least one of the first member and the second member in the axial direction. The end portion has a cut surface in a direction intersecting the axial direction.

The actuator of the present invention uses the above-mentioned damper member.

According to the present invention, a plurality of damper members having stable characteristics can be manufactured in a short time.

It is sectional drawing of the actuator 1 provided with the damper member 10. It is an exploded cross-sectional perspective view of the actuator 1 of FIG. It is explanatory drawing (the 1) of the manufacturing method of the damper member 10 of this embodiment. It is explanatory drawing (the 2) of the manufacturing method of the damper member 10 of this embodiment. It is explanatory drawing (the 3) of the manufacturing method of the damper member 10 of this embodiment. It is explanatory drawing (the 4) of the manufacturing method of the damper member 10 of this embodiment. It is explanatory drawing (the 5) of the manufacturing method of the damper member 10 of this embodiment. It is explanatory drawing (the 6) of the manufacturing method of the damper member 10 of this embodiment. It is a flowchart of the manufacturing method of the damper member 10 of this embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the configuration of the actuator 1 in which the movable body 3 and the fixed body 2 are connected by the damper member 10 will be described, and then a method of manufacturing the damper member 10 will be described. In the following description, the axis L is the central axis of the movable body 3. Further, one side in the direction in which the axis L extends (axis L direction) is L1, and the other side in the axis L direction is L2.

In the actuator 1 described below, the fixed body 2 surrounds the outer peripheral side of the movable body 3, the inner peripheral portion of the damper member 10 is connected to the movable body 3, and the outer peripheral portion of the damper member 10 is connected to the fixed body 2. However, the arrangement of the movable body 3 and the fixed body 2 is exchanged so that the inner peripheral portion of the damper member 10 is connected to the fixed body 2 and the outer peripheral portion of the damper member 10 is connected to the movable body 3. It is also possible to. Further, the actuator 1 includes a magnetic drive mechanism 6 that vibrates the movable body 3 with respect to the fixed body 2 in the axis L direction. In the actuator 1 described below, the magnetic drive mechanism 6 includes a magnet 61 arranged on the movable body 3 and a coil 62 arranged on the fixed body 2, but the arrangement of the magnet 61 and the coil 62 is reversed. It is also possible to adopt the above-mentioned configuration.

(Overall configuration of actuator 1 provided with damper member 10)
FIG. 1 is a cross-sectional view of an actuator 1 provided with a damper member 10. FIG. 2 is an exploded cross-sectional perspective view of the actuator 1 of FIG. As shown in FIGS. 1 and 2, the actuator 1 has a fixed body 2 and a movable body 3, a damper member 10 connecting the fixed body 2 and the movable body 3, and an axis of the movable body 3 with respect to the fixed body 2. A magnetic drive mechanism 6 for relative movement in the L direction is provided. The magnetic drive mechanism 6 includes a magnet 61 and a coil 62. The magnet 61 is arranged on the movable body 3, and the coil 62 is arranged on the fixed body 2. The movable body 3 is connected to the fixed body 2 via the damper member 10 at each position of the end portion on the L1 side and the end portion on the L2 side. Therefore, the damper members 10 are arranged at two locations separated in the axis L direction. As will be described later, the damper member 10 includes a gel-like damper member 14 made of a silicone gel or the like.

(Fixed body 2)
The fixed body 2 includes a case 20, a first holder 4 and a second holder 5 held by the case 20. The case 20 is fixed to a tubular case 21 extending in the L direction of the axis, a first end plate 22 fixed to the end of the tubular case 21 on the L1 side, and an end of the tubular case 21 on the L2 side. A second end plate 23 is provided. The first holder 4 and the second holder 5 are arranged inside the tubular case 21. The coil 62 is fixed to the first holder 4, and the damper member 10 is connected to the first holder 4. A damper member 10 is connected to the second holder 5. In this embodiment, the first holder 4 and the second holder 5 are made of resin, and the case 20 is made of metal.

The first holder 4 includes an annular portion 42 provided with a circular opening 41 in the center, and a cylindrical coil fixing portion 43 projecting from the inner peripheral portion of the annular portion 42 toward the L2 side. The coil 62 is wound around the outer peripheral side of the coil fixing portion 43. A damper member 10 is arranged in the opening 41. The outer peripheral surface of the annular portion 42 is a cylindrical surface and is inscribed in the tubular case 21. As shown in FIG. 2, the annular portion 42 is formed with ribs 421 extending in the radial direction. Further, a lightening portion 422 is formed between the ribs 421 adjacent to each other in the circumferential direction. A substrate 63 to which the coil wire is connected is fixed to the annular portion 42. The substrate 63 is arranged in a recess 44 provided on the outer peripheral surface of the annular portion 42.

The second holder 5 has an annular portion 52 provided with a circular opening 51 in the center, a cylindrical portion 53 projecting from the outer peripheral edge of the annular portion 52 toward the L1 side, and a part of the cylindrical portion 53 in the circumferential direction to L1. A projecting portion 54 projecting to the side is provided. The tip of the protrusion 54 is arranged in the recess 44 of the first holder 4. A damper member 10 is arranged inside the opening 51. The outer peripheral surfaces of the annular portion 52 and the cylindrical portion 53 are cylindrical surfaces and are inscribed in the tubular case 21.

(Movable body 3)
The movable body 3 has a shaft 31 extending in the axis L direction at the center of the fixed body 2 in the radial direction, a magnet 61 fixed at substantially the center of the shaft 31 in the axis L direction, and a first yoke that overlaps the magnet 61 on the L1 side. 32, a second yoke 33 overlapping the magnet 61 on the L2 side, an inner annular member 36 overlapping the first yoke 32 on the L1 side, and a metal inner annular member 37 overlapping the second yoke 33 on the L2 side. The inner annular members 36 and 37 are provided with shaft holes into which the shaft 31 is fitted. The inner annular members 36 and 37 have the same shape and are arranged in opposite directions in the L direction of the axis. The inner annular members 36 and 37 are weights for adjusting the mass m of the movable body 3.

In the actuator 1 connected by the damper member 10 including the movable body 3, the fixed body 2, and the gel-like damper member 14, the resonance frequency f0 of the movable body 3 is the movable body 3 as shown in the following equation (1). It is defined by an equation including the mass m of the above and the spring constant k of the gel-like damper member 14. Therefore, by adjusting the weight of the weights (inner annular members 36, 37), the mass of the movable body 3 can be adjusted, and the resonance frequency f0 of the movable body 3 can be adjusted.
Resonance frequency f0 = (1 / 2π) × √ (k / m) ・ ・ ・ (1)
k: Spring constant of gel-like damper member, m: Mass of movable body

The magnet 61 has a cylindrical shape and is magnetized so as to be polarized into the north and south poles in the L direction of the axis. The shaft 31 extends in the axis L direction at the center of the fixed body 2 in the radial direction. On the outer peripheral side of the magnet 61, a coil fixing portion 43 provided in the first holder 4 is arranged coaxially with the magnet 61. Therefore, the magnet 61 and the coil 62 are arranged coaxially.

The first yoke 32 is a magnetic plate whose outer diameter dimension is slightly larger than the outer diameter dimension of the magnet 61. The outer peripheral surface of the first yoke 32 projects radially outward from the outer peripheral surface of the magnet 61. The first yoke 32 is fixed to the surface of the magnet 61 on the L1 side by a method such as adhesion. The second yoke 33 is composed of two magnetic plates (first magnetic plate 34, second magnetic plate 35). The first magnetic plate 34 includes an end plate portion 341 arranged on the L2 side of the magnet 61, and a cylindrical side plate portion 342 extending from the outer edge of the end plate portion 341 to the L1 side. The side plate portion 342 is arranged on the outer peripheral side of the coil fixing portion 43. The second magnetic plate 35 has a disc shape slightly smaller than the end plate portion 341 of the first magnetic plate 34. The second magnetic plate 35 is laminated on the end plate portion 341 of the first magnetic plate 34 on the L1 side and welded to the end plate portion 341. In the second yoke 33, the second magnetic plate 35 is fixed to the surface of the magnet 61 on the L2 side by a method such as adhesion.

(Damper member 10)
The damper member 10 is arranged at two locations, between the shaft 31 and the first holder 4, and between the shaft 31 and the second holder 5. Hereinafter, the damper member 10 connecting the shaft 31 and the first holder 4 will be referred to as the first damper member 10A, and the damper member 10 connecting the shaft 31 and the second holder 5 will be referred to as the second damper member 10B. The first damper member 10A and the second damper member 10B have the same configuration and are arranged in opposite directions in the axis L direction.

The damper member 10 (first damper member 10A, second damper member 10B) includes a cylindrical first member 11, a second member 12 arranged on the outer peripheral side of the first member 11, and a first member 11 and a first member. A gel-like damper member 14 arranged between the two members 12 is provided. The first member 11 and the second member 12 have a cylindrical shape and are arranged coaxially. The gel-shaped damper member 14 is a cylindrical member having a constant radial thickness, and has a constant dimension (height) in the axis L direction. The gel-like damper member 14 is made of silicone gel. For example, as the gel-like damper member 14, a silicone gel having a needle insertion degree of 90 degrees to 110 degrees can be used.

The inner peripheral portion 141 of the gel-shaped damper member 14 is connected to the first member 11, and the outer peripheral portion 142 of the gel-shaped damper member 14 is connected to the second member 12. The gel-like damper member 14 is formed by filling a gel material between the first member 11 and the second member 12 and thermosetting the gel material. When the gel material is thermally cured, the portions in contact with the adhesive auxiliary layer 13 (see FIG. 4) applied to the outer peripheral surface of the first member 11 and the inner peripheral surface of the second member 12 react with each other to form an adhesive auxiliary layer. 13 is fixed to the coated surface. Therefore, the gel-like damper member 14 does not need to be fixed to the first member 11 and the second member 12 with an adhesive after curing, and is due to the adhesive force of the gel-like damper member 14 itself that has reacted with the adhesive auxiliary layer 13. The inner peripheral portion 141 is connected to the first member 11, and the outer peripheral portion 142 is connected to the second member 12.

(Mounting structure of damper member 10)
The first damper member 10A connecting the shaft 31 and the first holder 4 is arranged in the opening 41 of the first holder 4. The second member 12 of the first damper member 10A is fixed to the inner surface of the opening 41 by adhesion or the like. Further, the first member 11 of the first damper member 10A is fixed to the end portion of the shaft 31 on the L1 side by a bolt 310 arranged in the shaft hole 19 penetrating the central portion of the first member 11. As a result, the first holder 4 and the shaft 31 are connected by the first damper member 10A. The first member 11 comes into contact with the inner annular member 36 from the L1 side.

The second damper member 10B that connects the shaft 31 and the second holder 5 is arranged in the opening 51 of the second holder 5. The second member 12 of the second damper member 10B is fixed to the inner surface of the opening 51 by adhesion or the like. Further, the first member 11 of the second damper member 10B is fixed to the end portion of the shaft 31 on the L2 side by a bolt 310 arranged in the shaft hole 19. As a result, the second holder 5 and the shaft 31 are connected by the second damper member 10B. The first member 11 comes into contact with the inner annular member 37 from the L2 side.

(Operation of actuator 1)
When the actuator 1 energizes the coil 62, the magnetic drive mechanism 6 generates a driving force for driving the movable body 3 in the axis L direction. When the energization of the coil 62 is turned off, the movable body 3 returns to the origin position by the returning force of the gel-like damper member 14. Therefore, by intermittently energizing the coil 62, the movable body 3 vibrates in the axis L direction.

The first damper member 10A includes a gel-like damper member 14 that surrounds the end of the shaft 31 on the L1 side between the shaft 31 and the first holder 4. Further, the second damper member 10B includes a gel-like damper member 14 that surrounds the end of the shaft 31 on the L2 side between the shaft 31 and the second holder 5. In the first damper member 10A and the second damper member 10B, the gel-like damper member 14 is filled between the first member 11 and the second member 12 without a gap, and is continuously arranged on the entire circumference. When the movable body 3 vibrates in the L direction along the axis with respect to the fixed body 2, the first member 11 fixed to the inner peripheral portion 141 of the gel-shaped damper member 14 and the outer peripheral portion 142 of the gel-shaped damper member 14 are fixed. The second member 12 moves relative to the axis L direction. Therefore, the gel-like damper member 14 is deformed in the shearing direction following the vibration of the movable body 3.

(Manufacturing method of damper member 10)
3 to 8 are explanatory views of a method of manufacturing the damper member 10 of the present embodiment. FIG. 9 is a flowchart of a method for manufacturing the damper member 10 of the present embodiment. As shown in FIG. 3, the manufacturing jig 90 used for manufacturing the damper member 10 includes a circular recess 91 and a pin 92 protruding from the center of the bottom surface of the circular recess 91. The bottom surface of the circular recess 91 has an annular recess in the central region surrounding the pin 92. The height of the pin 92 shall be N times or more the thickness of the damper member 10 to be manufactured. N is the number of damper members 10 manufactured in one manufacturing process using the manufacturing jig 90, and is a natural number of 2 or more.

The first member 11a shown in FIGS. 4 to 7 is a tubular member that becomes N first members 11 by being cut later, and the height of the first member 11 is extended by N times or more. It has a long shape. The second member 12a is a tubular member that becomes N second members 12 by being cut later, and has a long shape in which the height of the second member 12 is extended by N times or more.

When manufacturing the damper member 10, as shown in FIG. 4, the first member 11a and the second member 12a are positioned on the manufacturing jig 90 as a mold for molding the gel-like damper member 14a. Use. The gel-like damper member 14a is a tubular member that becomes N gel-like damper members 14 by being cut later, and has a long shape in which the height of the gel-like damper member 14 is extended by N times or more. is there.

As shown in FIG. 9, the method for manufacturing the damper member 10 includes a step of preparing a gel material 140 for molding the gel-like damper member 14a (steps ST1 to ST5) and a method for molding the gel-like damper member 14a. A step of preparing a mold, forming a gel-like damper member 14a in the mold and removing it from the manufacturing jig 90 (steps ST11 to ST19), and a step of cutting the gel-like damper member 14a (step ST20) are performed. Including. The illustration of steps ST1 to ST5 is omitted.

<Preparation of gel material 140 for molding>
First, the process of preparing the gel material 140 for molding will be described with reference to FIG. The gel-like damper member 14a is formed from a two-component gel material 140, which is a mixture of two types of raw materials (first material and second material). In step ST1, the first material and the second material are weighed so as to have a predetermined blending ratio. Here, in the gel-like damper member 14a which is a molded product, the spring constant k changes depending on the blending ratio of the first material and the second material. Therefore, in step ST1, the first material and the second material are weighed so that the desired spring constant k can be achieved at a blending ratio.

Next, in step ST2, the first material and the second material are stirred and mixed with a mixer. Subsequently, in step ST3, the stirred gel material 140 is transferred to the container in fixed amounts. For example, when the gel material 140 is filled into a mold using a dispenser 93 (see FIG. 5) described later, the gel material 140 is transferred in a fixed amount to a syringe which is a container for the dispenser 93. The amount of the gel material 140 to be transferred to the container (syringe) is set to an amount according to the dimensions of the gel-like damper member 14a to be manufactured.

Subsequently, in steps ST4 and ST5, the air contained in the gel material 140 is removed. When a silicone gel is used as the gel material 140, it tends to contain air. Therefore, steps ST4 and ST5 are performed in order to suppress molding defects of the gel-like damper member 14a. In step ST4, the syringe containing the gel material 140 is set in the vacuum chamber. In step ST5, the inside of the vacuum chamber is depressurized to defoam the gel material 140 in the syringe. As described above, the preparation of the gel material 140 for molding the gel-like damper member 14a is completed.

<Preparation of mold for molding gel-like damper member 14a>
Next, the steps of preparing a mold for molding the gel-like damper member 14a, molding the gel-like damper member 14a in the mold, and removing the gel-like damper member 14a from the manufacturing jig 90 are described in FIGS. 4 to 7 and 9. Will be described with reference to. The step of preparing the mold for molding the gel-like damper member 14a (steps ST11 and ST12) may be performed before the step of preparing the gel material 140, or may be performed in parallel with the step of preparing the gel material 140. Or it may be performed after the step of preparing the gel material 140.

In step ST11, a radial gap S is formed between the first member 11a and the second member 12a by bringing the first member 11a and the second member 12a into contact with the manufacturing jig 90 for positioning. To do. As shown in FIG. 4, in step ST11, a pin 92 protruding from the center of the circular recess 91 is inserted into the shaft hole of the first member 11a, and the first member 11a is brought into contact with the bottom surface of the circular recess 91 from the L1 side. .. Further, the second member 12a is inscribed on the inner peripheral surface of the circular recess 91, and the second member 12a is brought into contact with the outer peripheral region of the bottom surface of the circular recess 91. As a result, the first member 11a and the second member 12a are positioned in the axial L direction and the radial direction, and an annular gap S is formed between the first member 11a and the second member 12a. The annular gap S is formed over the entire circumference, and the width in the radial direction is constant over the entire circumference.

In step ST12, the adhesion auxiliary layer 13 is formed on the outer peripheral surface of the first member 11a and the inner peripheral surface of the second member 12a, which are surfaces that come into contact with the gel material 140 when the gap S is filled with the gel material 140. The adhesion auxiliary layer 13 is formed, for example, by applying a primer. The adhesive auxiliary layer 13 may be formed before assembling the first member 11a and the second member 12a to the manufacturing jig 90. That is, the order of step ST11 and step ST12 can be reversed.

<Filling of gel material 140>
Next, in step ST13, the mold is filled with the gel material 140. As shown in FIG. 5, the degassed gel material 140 is filled in the radial gap S formed between the first member 11a and the second member 12a. As described above, since the gel material 140 is filled in the syringe, the syringe is set in the dispenser 93, and a certain amount of the gel material 140 is discharged from the dispenser 93 into the gap S.

When the filling of the gel material 140 is completed, the state as shown in FIG. 6 is obtained. That is, the gel material 140 is filled in the annular gap S between the first member 11a and the second member 12a. Here, of the upper surface 143 of the gel material 140, the portion in contact with the outer peripheral surface of the first member 11a or the inner peripheral surface of the second member 12a is lifted by surface tension. As a result, the upper surface 143 of the gel material 140 has a recessed shape.

<Treatment to cure the gel material 140>
Subsequently, in steps ST14 to ST18, a process of curing the gel material 140 is performed. For example, when a heat-curable silicone gel is used as the gel material 140, the gel material 140 is cured by performing a heat-curing treatment. First, in step ST14, a mold filled with the gel material 140 (a unit in which the first member 11a and the second member 12a are assembled to the manufacturing jig 90) is put into the chamber of the constant temperature bath. Next, in step ST15, the temperature of the chamber is raised to a specified temperature. Subsequently, in step ST16, the inside of the chamber is maintained at a specified temperature and waits for a specified time. Next, in step ST17, the temperature inside the chamber is lowered, and in step ST18, the mold is taken out from the constant temperature bath.

As described above, in steps ST14 to ST18, the gel material 140 is heated and cured by heating the gel material 140 together with the mold and maintaining the gel material 140 at a specified temperature for a specified time. As a result, the gel-like damper member 14a is formed in the gap S.

When the gel material 140 is heat-cured, the portion in contact with the adhesive auxiliary layer 13 (primer) reacts with the adhesive auxiliary layer 13 (primer), and the outer peripheral surface of the first member 11a and the inner peripheral surface of the second member 12a Is fixed to. Therefore, in the gel-like damper member 14a after curing, the inner peripheral portion 141 of the gel-like damper member 14a is fixed to the first member 11a by the adhesive force of the gel-like damper member 14a itself without using an adhesive. , The outer peripheral portion 142 of the gel-like damper member 14a is fixed to the second member 12a.

<Removal from manufacturing jig 90>
Next, in step ST19, as shown in FIG. 7, the damper member 10a in which the gel-like damper member 14a, the first member 11a, and the second member 12a are integrated is removed from the manufacturing jig 90. The damper member 10a is a member that becomes N damper members 10 when cut, and has a shape in which the height of the damper members 10 is extended by N times or more.

For example, a through hole for arranging a protrusion pin is provided on a surface of the manufacturing jig 90 with which the first member 11a abuts and a surface with which the second member 12a abuts, and the damper member 10a is manufactured using the protrusion pin. Remove from the jig 90. As a result, the first member 11a and the second member 12a become the damper member 10a connected by the gel-like damper member 14a.

<Cut of damper member 10a>
Next, in step ST20, as shown in FIG. 7, the damper member 10a is cut by the cutting surface 71 perpendicular to the axis L direction. As a result, N damper members 10 in which the first member 11 and the second member 12 are connected by the gel-like damper member 14 are completed.

In the example shown in FIG. 7, the damper member 10a is separated into 13 members by cutting the damper member 10a by the 12 cutting surfaces 71. Of these, each of the 11 members excluding the members 10b and 10c at both ends has at least one end (for example, both ends) in the axis L direction as a cut surface (cut surface), and the shape is stable. Therefore, it can be used as N damper members 10 (N = 11) having stable characteristics such as a spring constant.

On the other hand, the member 10b including the surface 143 has a dent due to surface tension as described above, so that the characteristics such as the spring constant are undefined. Further, the member 10c that was in contact with the circular recess 91 of the manufacturing jig 90 may have a different shape from the 11 damper members 10 because one of the ends in the L direction of the axis is not a cut surface. ..

Therefore, it is desirable that the members 10b and 10c be discarded or used for a purpose different from that of the 11 damper members 10. As a result, 11 damper members 10 having stable characteristics can be manufactured.

FIG. 8 shows a cross section and a plane of one damper member 10 cut out from the damper member 10a. The ends 81 and 82 are both ends of the damper member 10 in the L direction of the axis (vertical direction in FIG. 8). In the damper member 10 manufactured by the manufacturing method of this embodiment, the ends 81 and 82 in the axis L direction are cut surfaces having evidence of being cut. Further, the cut surface has evidence that the first member 11, the second member 12, and the gel-like damper member 14 are cut together.

The member 10c shown in FIG. 7 may be used as the damper member 10 together with the 11 damper members 10 as long as the difference in characteristics from the 11 damper members 10 is sufficiently small.

The height of the obtained damper member 10 changes depending on the cutting interval of the damper member 10a, whereby characteristics such as the spring constant can be adjusted. That is, the characteristics such as the spring constant of the damper member 10 can be adjusted by the cutting interval of the damper member 10a in addition to the above-mentioned compounding ratio of the first material and the second material. Therefore, it is also possible to manufacture a plurality of damper members 10 having different spring constants by changing the cutting interval from the damper member 10a formed by a certain compounding ratio of the first material and the second material.

Further, as in the example of FIG. 7, by cutting the damper member 10a in the direction orthogonal to the axis L direction, the cutting process is simplified and a large number of damper members 10 can be cut out.

However, the cutting direction of the damper member 10a is not limited to the direction orthogonal to the axis L direction. For example, for at least one of the damper members 10 cut out from the damper member 10a, the length of the portion in contact with the first member 11 in the axis L direction is longer than the length of the portion in contact with the second member 12 in the axis L direction. The damper member 10a may be cut as described above. Thereby, when the damper member 10 is used, the difference in stress acting on the inner peripheral surface and the outer peripheral surface of the damper member 10 can be reduced.

(Main effect of this form)
As described above, in the method for manufacturing the damper member 10 of the present embodiment, the step of positioning the first member 11a and the second member 12a surrounding the outer peripheral side of the first member 11a on the manufacturing jig 90 (step ST11). And the step of filling the gap S between the outer peripheral surface of the first member 11a and the inner peripheral surface of the second member 12a with the gel material 140 (step ST13), and the gel material 140 is cured to cure the gel-like damper member 14a. (Steps ST14 to ST18), a step of removing the gel-like damper member 14a together with the first member 11a and the second member 12a from the manufacturing jig 90 (step ST19), and a long gel-like damper member. A step (step ST20) of cutting the 14a in a direction intersecting the axis L direction of the first member 11a and the second member 12a to form a plurality of gel-like damper members 14 is included.

As a result, a plurality of damper members 10 in which the first member 11 and the second member 12 are fixed to the gel-like damper member 14 can be obtained. According to this embodiment, since the plurality of damper members 10 can be manufactured in one manufacturing process using the manufacturing jig 90, the plurality of damper members 10 can be manufactured in a short time. Further, by cutting out a plurality of damper members 10 from the long damper member 10a, the surface 143 of the damper member 10a formed by the surface tension can be removed, so that the damper member having stable characteristics such as the spring constant can be removed. 10 can be manufactured. Therefore, it is possible to manufacture a plurality of damper members 10 having stable characteristics such as a spring constant in a short time.

Further, in the present embodiment, the adhesion auxiliary layer 13 is formed on the outer peripheral surface of the first member 11a and the inner peripheral surface of the second member 12a, and the gel material 140 is cured to form the gel-like damper member 14a. The auxiliary layer 13 and the gel material 140 are reacted to fix the first member 11a and the second member 12a to the gel-like damper member 14a.

As a result, the frame members (first member 11 and second member 12) can be fixed to the gel-like damper member 14 at the same time in the process of forming the gel-like damper member 14, so that the gel-like damper member which is a poorly adhesive member can be fixed at the same time. The gel-like damper member 14 can be used as a connecting body without performing the bonding step with respect to 14. By eliminating the need for the bonding process of the gel-like damper member 14 in this way, the manufacturing process of the actuator 1 can be made more efficient. Further, since the damper member 10 in which the gel-like damper member 14 and the frame material are integrated can be manufactured, the gel-like damper member 14 after the manufacture can be easily handled. Further, even if the fixing surface of the gel-like damper member 14 in the first member 11 and the second member 12 is not flat, it can be easily fixed. Therefore, it is easy to manufacture the gel-like damper member 14 having a three-dimensional shape such as a cylindrical shape.

Further, in this embodiment, since a heat-curable gel material (for example, silicone gel) is used as the gel material 140, the gel-like damper member 14a can be molded by performing the heat-curing treatment. Thereby, the curing of the gel material 140 can be easily promoted. Further, in the present embodiment, since the primer is used as the adhesion auxiliary layer 13, when the gel material 140 is heat-cured by applying the primer to the outer peripheral surface of the first member 11a and the inner peripheral surface of the second member 12a. , The primer and the gel material 140 can be reacted to bond the gel-like damper member 14a to the surface coated with the primer.

Further, in the present embodiment, the first member 11a and the second member 12a are cylindrical and are coaxially positioned by the manufacturing jig 90. Then, a cylindrical gel-like damper member 14a is formed between the outer peripheral surface of the first member 11a and the inner peripheral surface of the second member 12a. Then, by cutting the gel-like damper member 14a, the cylindrical gel-like damper member 14 is formed.

By manufacturing the cylindrical gel-shaped damper member 14 in this way, the distance between the inner and outer circumferences of the gel-shaped damper member 14 becomes constant over the entire circumference, so that the spring constant can be easily controlled. Further, it is possible to manufacture the actuator 1 in which the gel-like damper member 14 is continuously arranged over the entire circumference in the radial gap between the movable body 3 and the fixed body 2. In such an actuator 1, the spring constant of the gel-like damper member 14 when the movable body 3 moves in a direction other than the axis L direction (vibration direction) causes the movable body 3 to move in the axis L direction (vibration direction). Since it is about three times the spring constant in the case, it is possible to prevent the movable body 3 from moving in a direction different from the vibration direction. Therefore, the unintended movement of the movable body 3 can be suppressed, and the movable body 3 can be prevented from colliding with the fixed body 2.

Further, in the present embodiment, the spring constant of the gel-like damper member 14 is adjusted by the cutting interval of the gel-like damper member 14a. Thereby, the resonance frequency of the movable body 3 can be adjusted regardless of the compounding ratio of the gel material 140 or the like.

Further, in the present embodiment, the long gel-like damper member 14a is cut in a direction orthogonal to the axis L direction to form a plurality of gel-like damper members 14. This simplifies the cutting process and allows a large number of damper members 10 to be cut out.

(Modification example)
For example, in the above embodiment, when the gel material 140 is heat-cured, if the gel material 140 shrinks due to the heat-curing treatment, stress concentration may occur at a specific portion of the molded gel-like damper member 14a. Therefore, when the gel material 140 shrinks due to the thermosetting treatment, it is preferable to perform the thermosetting treatment in the pressurized state with the inside of the chamber of the constant temperature bath in the pressurized state in steps ST15 to ST17 of the above manufacturing method. By doing so, it is possible to suppress the occurrence of stress concentration at a specific portion of the molded gel-like damper member 14a. By reducing the stress concentration, it is possible to suppress the characteristic variation among the plurality of gel-like damper members 14 cut out from the gel-like damper member 14a. In addition, the durability of the gel-like damper member 14 can be improved. Further, by reducing the stress concentration, the allowable range of amplitude when the movable body 3 is vibrated can be increased. Therefore, the movable body 3 can be vibrated with a large amplitude.

Further, although not shown, a plurality of combinations of the circular recess 91 and the pin 92 may be provided in the manufacturing jig 90 to manufacture the plurality of gel-like damper members 14a at one time. As a result, more damper members 10 can be manufactured in one manufacturing process using the manufacturing jig 90.

Further, although the case of manufacturing the cylindrical gel-shaped damper member 14a has been described, the gel-shaped damper member 14a is not limited to the cylindrical shape. For example, the gel-like damper member 14a having a square cylinder shape may be manufactured by using the first member 11a and the second member 12a having a square cylinder shape. In this case, the square cylinder-shaped damper member 10 can be manufactured.

Further, for example, before filling the gel material 140, a third member having a mold release layer on the surface of a part of the gap S between the outer peripheral surface of the first member 11a and the inner peripheral surface of the second member 12a. May be arranged, and after the gel material 140 is cured, the third member may be removed from the molded product removed from the manufacturing jig 90. As a result, it is possible to manufacture the gel-like damper member 14a having a shape in which the region where the third member is arranged is lightened. By cutting the gel-like damper member 14a, it is possible to manufacture a plurality of gel-like damper members 14 having a lightened shape.

Further, although the case where the damper member 10 is used for the actuator 1 has been described, the damper member 10 can be used not only for the actuator 1 but also for various devices.

Further, in the above embodiment, the case where the first member 11 and the second member 12 are different members has been described, but the first member 11 and the second member 12 may be an integral member connected to each other. In this case, since the second member 12 is positioned with respect to the first member 11 without using the manufacturing jig 90, it is not necessary to use the manufacturing jig 90.

As described above, the following matters are disclosed in the present specification.

(1)
A gel material is filled in the gap between the outer peripheral surface of the tubular first member and the inner peripheral surface of the tubular second member positioned so as to surround the outer peripheral side of the first member.
The gel material is cured to form a long gel-like damper member.
A method for manufacturing a damper member, which comprises cutting the long gel-like damper member in a direction intersecting the axial direction of the first member and the second member to form a plurality of gel-like damper members.

With the configuration as described in (1), a plurality of damper members having stable characteristics can be manufactured in a short time.

(2)
(1) The method for manufacturing a damper member according to the above.
Before filling the gel material, the first member and the second member are positioned on the manufacturing jig.
The molded gel-like damper member is removed from the manufacturing jig together with the first member and the second member.
A method for manufacturing a damper member, in which the removed long gel-like damper member is cut in a direction intersecting the axial direction to form a plurality of gel-like damper members.

With the configuration as shown in (2), the first member and the second member can be easily positioned even if the first member and the second member are not integrated.

(3)
The method for manufacturing a damper member according to (1) or (2).
Before filling the gel material, an adhesion auxiliary layer is formed on the outer peripheral surface of the first member and the inner peripheral surface of the second member.
The gel material is cured to form the long gel-like damper member, and the adhesive auxiliary layer and the gel material are reacted to form the first member and the first member on the long gel-like damper member. 2 A method for manufacturing a damper member for fixing a member.

With the configuration as shown in (3), the frame material composed of the first member and the second member can be fixed to the gel-like damper member at the same time in the process of molding the gel-like damper member.

(4)
The method for manufacturing a damper member according to any one of (1) to (3).
The gel material is a heat-curable gel material.
A method for manufacturing a damper member, which forms the gel-like damper member by filling the gap with the gel material and then performing a heat hardening treatment.

With the configuration as in (4), curing can be easily promoted.

(5)
The method for manufacturing a damper member according to any one of (1) to (4).
The first member and the second member are cylindrical and are coaxially positioned by the manufacturing jig.
A method for manufacturing a damper member, which forms a cylindrical gel-like damper member between an outer peripheral surface of the first member and an inner peripheral surface of the second member.

With the configuration as shown in (5), the distance between the inner and outer circumferences becomes constant over the entire circumference, so that the spring constant can be easily controlled.

(6)
The method for manufacturing a damper member according to any one of (1) to (5).
A method for manufacturing a damper member, in which the spring constant of the gel-like damper member is adjusted by the cutting interval of the long gel-like damper member.

With the configuration as shown in (6), the spring constant can be adjusted regardless of the blending ratio of the gel material or the like.

(7)
The method for manufacturing a damper member according to any one of (1) to (6).
A method for manufacturing a damper member, in which the long gel-like damper member is cut in a direction orthogonal to the axial direction to form the plurality of gel-like damper members.

With the configuration as shown in (7), the cutting process is simplified and a large number of damper members can be cut out.

(8)
The method for manufacturing a damper member according to any one of (1) to (7).
By cutting the long gel-like damper member, for at least a part of the gel-like damper members, the length of the portion in contact with the first member in the axial direction becomes the second member. A method for manufacturing a damper member in which the length of the contacting portion is longer than the length in the axial direction.

With the configuration as shown in (8), it is possible to reduce the difference in stress acting on the inner peripheral surface and the outer peripheral surface when the damper member is used.

(9)
The first tubular member and
A tubular second member that surrounds the outer peripheral side of the first member, and
A gel-like damper member formed in a gap between the outer peripheral surface of the first member and the inner peripheral surface of the second member, and
The first member, the second member, and the gel-like damper member have a cut surface at at least one end in the axial direction of the first member and the second member in a direction intersecting the axial direction. Damper member with.

With the configuration as shown in (9), it is possible to manufacture a plurality of products in a short time, and the characteristics are stable.

(10)
(9) An actuator using the damper member described above.

With the configuration as shown in (10), a plurality of damper members can be manufactured in a short time, and the characteristics of the damper member are stable.

1 Actuator 2 Fixed body 3 Movable body 4 1st holder 5 2nd holder 6 Magnetic drive mechanism 10A 1st damper member 10B 2nd damper member 10a, 10 Damper member 10b, 10c member 11a, 11 1st member 12a, 12 2nd Member 13 Adhesive auxiliary layer 14a, 14 Gel-shaped damper member 19 Shaft hole 20 Case 21 Cylindrical case 22 First end plate 23 Second end plate 31 Shaft 32 First yoke 33 Second yoke 34 First magnetic plate 35 Second magnetic Plates 36, 37 Inner annular members 41, 51 Openings 42, 52 An annular portion 43 Coil fixing portion 44 Recession 53 Cylindrical portion 54 Protruding portion 61 Magnet 62 Coil 63 Substrate 71 Cut surface 81, 82 End portion 90 Manufacturing jig 91 Circular Recess 92 Pin 93 Dispenser 140 Gel material 141 Inner circumference 142 Outer circumference 143 Surface 310 Bolt 341 End plate 342 Side plate 421 Rib 422 Lightening part

Claims (10)

A gel material is filled in the gap between the outer peripheral surface of the tubular first member and the inner peripheral surface of the tubular second member positioned so as to surround the outer peripheral side of the first member.
The gel material is cured to form a long gel-like damper member.
A method for manufacturing a damper member, which comprises cutting the long gel-like damper member in a direction intersecting the axial direction of the first member and the second member to form a plurality of gel-like damper members. The method for manufacturing a damper member according to claim 1.
Before filling the gel material, the first member and the second member are positioned on the manufacturing jig.
The molded gel-like damper member is removed from the manufacturing jig together with the first member and the second member.
A method for manufacturing a damper member, in which the removed long gel-like damper member is cut in a direction intersecting the axial direction to form a plurality of gel-like damper members. The method for manufacturing a damper member according to claim 1 or 2.
Before filling the gel material, an adhesion auxiliary layer is formed on the outer peripheral surface of the first member and the inner peripheral surface of the second member.
The gel material is cured to form the long gel-like damper member, and the adhesive auxiliary layer and the gel material are reacted to form the first member and the first member on the long gel-like damper member. 2 A method for manufacturing a damper member for fixing a member. The method for manufacturing a damper member according to any one of claims 1 to 3.
The gel material is a heat-curable gel material.
A method for manufacturing a damper member, which forms the gel-like damper member by filling the gap with the gel material and then performing a heat hardening treatment. The method for manufacturing a damper member according to claim 1.
The first member and the second member are cylindrical and coaxially positioned.
A method for manufacturing a damper member, which forms a cylindrical gel-like damper member between an outer peripheral surface of the first member and an inner peripheral surface of the second member. The method for manufacturing a damper member according to any one of claims 1 to 5.
A method for manufacturing a damper member, in which the spring constant of the gel-like damper member is adjusted by the cutting interval of the long gel-like damper member. The method for manufacturing a damper member according to any one of claims 1 to 6.
A method for manufacturing a damper member, in which the long gel-like damper member is cut in a direction orthogonal to the axial direction to form the plurality of gel-like damper members. The method for manufacturing a damper member according to any one of claims 1 to 7.
By cutting the long gel-like damper member, for at least a part of the gel-like damper members, the length of the portion in contact with the first member in the axial direction becomes the second member. A method for manufacturing a damper member in which the length of the contacting portion is longer than the length in the axial direction. The first tubular member and
A tubular second member that surrounds the outer peripheral side of the first member, and
A gel-like damper member formed in a gap between the outer peripheral surface of the first member and the inner peripheral surface of the second member, and
The first member, the second member, and the gel-like damper member have a cut surface at at least one end in the axial direction of the first member and the second member in a direction intersecting the axial direction. Damper member with. An actuator using the damper member according to claim 9.

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