Vibration actuator

Abstract

To obtain a vibration actuator which enables improvement of assemblability.SOLUTION: A vibration actuator 10 includes: a bobbin 40 around which a wire 38 is wound; and a wiring part 22 provided at the bobbin 40 and having a pair of wire connection parts 64 to which a pair of terminal parts 38A, 38B of the wire 38 is soldered, and a pair of external connection parts 66 to which a pair of cables 24 for supplying electric power from the outside is soldered.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a vibration actuator. [Background technology]

[0002] The following Patent Document 1 discloses a vibration actuator having a fixed body including a coil, a movable body including a magnet arranged radially inside the coil, and an elastic support part that supports the movable body so that it can move freely relative to the fixed body. In this vibration actuator, when power is supplied to the coil from a power supply part, the coil and the magnet work together to move the movable body back and forth in the vibration direction within the case.

[0003] The coil is wound around the outer circumferential surface of the coil bobbin part. The coil bobbin part includes a cylindrical bobbin body and a central flange part that is disposed at the center of the outer circumferential surface of the bobbin body in the vibration direction and protrudes radially from the outer circumferential surface of the bobbin body. A conductive terminal binding part is press-fitted into the outer circumferential surface of the central flange part.

[0004] In the technology described in Patent Document 1 below, each end of the coil is wound around a terminal winding part that is press-fitted into a central flange part. The coil is connected to a power supply part via the terminal winding part. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. 2021 / 172576 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the above-mentioned prior art, since it is necessary to press-fit the terminal binding portion into the central flange portion of the coil bobbin, the number of parts increases, and there is room for improvement in improving the assembly efficiency of the vibration actuator.

[0007] SUMMARY OF THE PRESENT EMBODIMENT In consideration of the above, an object of the present invention is to provide a vibration actuator that can be easily assembled. [Means for solving the problem]

[0008] The vibration actuator of the first aspect has a wiring section including a bobbin around which a wire is wound, a pair of wire connection sections provided on the bobbin and to which a pair of terminal sections of the wire are respectively soldered, and a pair of external connection sections to which a pair of cables for supplying power from the outside are respectively soldered.

[0009] According to the first aspect, a wire is wound around the bobbin. The bobbin is provided with a wiring section. The wiring section includes a pair of wire connection sections to which a pair of terminal sections of the wire are respectively soldered, and a pair of external connection sections to which a pair of cables for supplying power from the outside are respectively soldered. In other words, the pair of terminal sections of the wire and the pair of cables are both soldered in the wiring section. Therefore, since there is no need to separately provide dedicated parts such as lug terminals, the number of parts can be reduced, and the number of work steps can be reduced.

[0010] A vibration actuator according to a second aspect is the first aspect, wherein the wiring portion is a substrate formed separately from the bobbin.

[0011] According to the second aspect, the pair of external connection parts are provided on a board formed separately from the bobbin, which improves workability when soldering the pair of cables to the board.

[0012] A vibration actuator according to a third aspect is the same as that of the second aspect, in which the pair of terminal portions of the wire are respectively wound around a pair of entanglement portions including a bobbin side protrusion formed on the bobbin and a substrate side protrusion formed on the substrate.

[0013] According to the third aspect, a pair of terminal portions of the wire are respectively entangled with a pair of entanglement portions. Therefore, the pair of terminal portions of the wire can be fixed, and stable wiring can be achieved. In addition, since the wire is integrally wound around the bobbin side protrusion and the board side protrusion, it is possible to prevent the board from floating off the bobbin. Therefore, the board can be stably fixed to the bobbin.

[0014] A vibration actuator according to a fourth aspect is the third aspect, wherein the pair of entanglement portions each include a winding portion around which the pair of terminal portions are wound, and a locking portion formed on the tip side of the winding portion and wider than the winding portion.

[0015] According to the fourth aspect, a pair of terminal portions of the wire are wound around the winding portions of the pair of entangling parts, respectively. Also, the locking portions, which are wider than the winding portions, prevent the pair of terminal portions entangled with the winding portions from slipping off toward the tip side of the winding portions.

[0016] A vibration actuator according to a fifth aspect is the third or fourth aspect, wherein the tip portions of the pair of terminal portions of the wire are respectively provided between the bobbin side protrusion and the board side protrusion, or hooked into a groove provided in either the bobbin side protrusion or the board side protrusion.

[0017] According to the fifth aspect, a groove is provided in the bobbin side protrusion, the board side protrusion, or between the bobbin side protrusion and the board side protrusion. Each tip of the pair of terminal parts of the wire is hooked and locked in the groove. This makes it possible to prevent each tip of the pair of terminal parts of the wire from contacting surrounding components. Therefore, it is possible to prevent each tip of the pair of terminal parts of the wire from contacting surrounding components during vibration and generating abnormal noise.

[0018] A vibration actuator according to a sixth aspect is any one of the second to fifth aspects, wherein the pair of wire connection parts are each inclined with respect to the short-side direction of the substrate.

[0019] According to the sixth aspect, it is possible to ensure a wider wire connection portion compared to a case in which the pair of wire connection portions are provided along the short-side direction of the board.

[0020] The vibration actuator according to the seventh aspect is any one of the second to sixth aspects, wherein the pair of wire connection portions are positioned so as to overlap when the substrate is rotated within a plane including the pair of wire connection portions.

[0021] According to the seventh aspect, when the substrate is rotated from a predetermined position within a plane including the pair of wire connection parts, one of the wire connection parts is positioned where the other wire connection part was originally positioned. Therefore, after soldering one end part of the wire to one of the wire connection parts, the other end part of the wire can be soldered to the other wire connection part arranged at the same position by rotating the substrate. This allows the pair of end parts of the wire to be soldered to the pair of wire connection parts without changing the positions of the solder and the tip of the soldering device.

[0022] A vibration actuator according to an eighth aspect is any one of the second to seventh aspects, wherein the pair of wire connecting portions and the pair of external connecting portions are provided at separate positions on the substrate.

[0023] According to the eighth aspect, the pair of terminal portions of the wires and the pair of cables are soldered to the board at different positions, so that durability against vibration can be improved. Effect of the Invention

[0024] As described above, the vibration actuator according to the present invention has the excellent effect of improving the ease of assembly. [Brief description of the drawings]

[0025] [Figure 1] 1 is a perspective view of a vibration actuator according to an embodiment of the present invention. [Diagram 2]2 is a cross-sectional view taken along line 2-2 of FIG. 1. [Diagram 3] FIG. 2 is an enlarged view of a main part of FIG. [Figure 4] FIG. 4 is an enlarged view of the terminal shown in FIG. [Diagram 5] 5 is a diagram for explaining the arrangement of wire connection parts of the terminal shown in FIG. 4. FIG. [Figure 6] 4 is an enlarged perspective view of a main part of the entanglement portion shown in FIG. 3, seen obliquely from below. [Figure 7] 7 is an enlarged side view showing a groove portion of the entanglement portion shown in FIG. 6. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] A vibration actuator 10 according to an embodiment of the present invention will be described below with reference to Figs. 1 to 7. The arrow Z shown in each figure indicates the upper side of the vibration actuator. However, in this specification, "upper" and "lower" refer to one side and the other of the vibration directions of the vibration actuator for convenience, and have no relation to the up and down when the vibration actuator is used. The arrow X shown in each figure indicates the radial direction of the vibration actuator perpendicular to the Z axis and perpendicular to the terminal surface. The arrow Y shown in each figure indicates the radial direction of the vibration actuator perpendicular to the Z axis and perpendicular to the X axis. In the following description, when the left and right directions are used unless otherwise specified, the right side represents the positive side in the Y axis direction, and the left side represents the negative side in the Y axis direction.

[0027] 1, the vibration actuator 10 according to this embodiment is formed in a cylindrical shape. The vibration actuator 10 is mounted on a game console controller as an example, but is not limited to this and may be mounted on other electronic devices. Furthermore, the shape of the vibration actuator is not limited to a cylindrical shape and may be formed in a rectangular column shape, for example.

[0028] (Overall composition) The vibration actuator 10 comprises a substantially cylindrical case 12 and a stator 14 fixed to the bottom of the case 12. Furthermore, as shown in Fig. 2, the vibration actuator 10 also comprises a mover 16 housed inside the case 12 so as to be able to vibrate in the vertical direction. A leaf spring 18 is provided at the top of the vibration actuator 10 to elastically support the mover 16 relative to the case 12. An upper cover 20 is disposed above the leaf spring 18 to close the top end of the case 12.

[0029] As shown in Fig. 1, at the bottom of the vibration actuator 10, on the radially outer side, a terminal 22 is provided for connection to an external power source (not shown). A pair of cables 24 for supplying power from the outside is soldered to the terminal 22. The terminal 22 corresponds to the wiring section and the board in this invention. The terminal 22 will be described in detail later.

[0030] (Mover 16) As shown in FIG. 2, the movable member 16 is composed of a magnet 26 formed in an approximately cylindrical shape, a yoke 28 which is cylindrical with a bottom and has an upper side as the bottom, and is fixed to the upper surface of the magnet 26, and a pole piece 30 which is approximately disk-shaped and fixed to the lower surface of the magnet 26.

[0031] A spacer 32 is provided between the lower surface of the leaf spring 18 and the upper surface of the yoke 28. Furthermore, a substantially disc-shaped stopper 34 is provided on the upper surface of the leaf spring 18 to prevent the mover 16 from moving excessively upward.

[0032] The spacer 32 includes a small diameter portion 34A having a diameter smaller than the magnet 26 and substantially the same as the diameter of the stopper 34, and a large diameter portion 34B having a diameter larger than the magnet 26. The pole piece 30 has a diameter substantially the same as that of the large diameter portion 34B of the spacer 32. The above dimensions of each component are merely examples and are not limited to these.

[0033] A through hole is formed in the axial center of each of the stopper 34, the leaf spring 18, the spacer 32, the yoke 28, the magnet 26, and the pole piece 30, and a rod-shaped shaft 36 is inserted into these through holes. An upper end 36A of the shaft 36 protrudes upward from the upper surface of the stopper 34. A through hole 20A is formed in the axial center of the top cover 20 to avoid interference with the upper end 36A of the shaft 36 when the mover 16 vibrates. A lower end 36B of the shaft 36 protrudes downward from the lower surface of the pole piece 30.

[0034] The yoke 28 includes a substantially disk-shaped bottom portion 28A sandwiched between the spacer 32 and the magnet 26, and a side wall portion 28B extending axially downward from the peripheral end of the bottom portion 28A. The side wall portion 28B is disposed inside the case 12 with a gap therebetween. The lower end of the side wall portion 28B is located at substantially the same height as the lower end portion 36B of the shaft 36.

[0035] (Stator 14) 3, the stator 14 includes a wire 38 and a bobbin 40 around which the wire 38 is wound. The bobbin 40 includes an approximately cylindrical bobbin body 42 around which the wire 38 is wound at its upper portion. The bobbin 40 also includes a bottom lid 44 on which the terminal 22 is disposed and which closes the bottom end of the case 12 at its lower portion.

[0036] The bobbin body 42 includes a cylindrical coil winding portion 42A around which the wire 38 is wound, an upper flange portion 42B extending radially outward from the upper end of the coil winding portion 42A, and a lower flange portion 42C extending radially outward from the lower end of the coil winding portion 42A.

[0037] 2, the portion of the wire 38 that is wound around the coil winding portion 42A of the bobbin body 42 constitutes the coil 38A. The side wall portion 28B of the yoke 28 is disposed radially outward from, and spaced apart from, the coil 38A. The magnet 26 and the pole piece 30 are disposed radially inward of the bobbin body 42.

[0038] The bottom cover 44 has a bottom cover main body 46 that abuts against the bottom end of the case 12 from below. The bottom cover 44 also has a case engagement portion 48 that abuts against the inside of the bottom end of the case 12. The bottom cover 44 also has a substantially disk-shaped locking portion 50 at its upper end. The locking portion 50 locks the pole piece 30, thereby suppressing excessive downward movement of the mover 16. A through hole 50A is formed in the axial center of the locking portion 50 to avoid interference with the bottom end 36B of the shaft 36 when the mover 16 vibrates.

[0039] Here, the lower cover 44 is provided with a fixing portion 52 for fixing the terminal 22. The fixing portion 52 is formed in substantially the same shape as the terminal 22 when viewed from the X-axis direction in FIG. 3. The terminal 22 is fastened by a fastening portion 53 in a state where it is placed on the fixing portion 52. The lower cover main body 46 has a ring-shaped shape with a part cut out when viewed from the Z-axis direction, and the fixing portion 52 is formed in the cut-out portion. In addition, the fixing portion 52 is formed to protrude radially outward beyond the case engagement portion 48.

[0040] 1, a cutout portion 12A having a substantially rectangular shape when viewed from the X-axis direction is formed in the lower portion of the case 12 at a position corresponding to the fixing portion 52 of the lower cover 44 and the terminal 22. As a result, the terminal 22 is exposed to the outside of the vibration actuator 10.

[0041] 3, a recess 54 that is substantially U-shaped when viewed from the X-axis direction is formed in the center and upper part of the fixing part 52 in the width direction (Y-axis direction). The recess 54 is configured to include a right side wall 54A formed on the right side, a left side wall (not shown) formed on the left side facing the right side wall 54A, and a bottom wall 54B that connects the bottom ends of the right side wall 54A and the left side wall (not shown).

[0042] A right protrusion 56 is formed on the right side wall 54A, protruding toward the left side wall (not shown). Similarly, a left protrusion 58 is formed on the left side wall (not shown), protruding toward the right side wall 54A. The right protrusion 56 and the left protrusion 58 are each formed into a substantially rectangular parallelepiped shape, for example. The right protrusion 56 is formed below the left protrusion 58.

[0043] The terminal 22 includes a base portion 22A made of resin, a pair of left and right conductive portions 22B each having a pattern formed from metal, and a solder resist portion 22C that suppresses adhesion of solder.

[0044] 4, the terminal 22 is configured symmetrically and includes a board main body 60 formed in a substantially U-shape when viewed from the X-axis direction, and a pair of board side protrusions 62 extending downward from the lower end of the board main body 60. The board main body 60 has a substantially rectangular shape with the Y-axis direction as the longitudinal direction, with the upper part and the center part in the width direction cut out in a rectangular shape. In other words, the board main body 60 has a pair of left and right recessed corners 60B in the center part in the width direction (Y-axis direction).

[0045] A pair of left and right through-holes 60A are formed in the upper part of the board main body 60. A substantially cylindrical protrusion (not shown) protruding in the X-axis direction is formed in the fixing part 52 (see FIG. 3) of the lower cover 44, and the protrusion is inserted into the through-hole 60A of the board main body 60, so that the terminal 22 and the fixing part 52 can be aligned.

[0046] Moreover, one end 38B and the other end 38C as a pair of terminal portions of the wire 38 are soldered to the board main body 60. Specifically, the one end 38B and the other end 38C of the wire 38 are soldered to a pair of left and right wire connection portions 64. Furthermore, the board main body 60 includes a pair of left and right external connection portions 66 to which the pair of left and right cables 24 are soldered, respectively.

[0047] The pair of wire connection parts 64 are provided so as to be inclined with respect to the short-side direction of the terminal 22. Specifically, the pair of wire connection parts 64 are provided so as to be inclined toward the widthwise outer side of the terminal 22 as they approach the lower side, and are provided from a pair of inside corner parts (corners) 60B toward the widthwise outer side of the base ends of the pair of board-side protrusions 62 so as to move away from each other. One end part 38B and the other end part 38C of the wire 38 are arranged so as to be hooked on the pair of inside corner parts (corners) 60B.

[0048] As shown in Fig. 5, the pair of wire connection portions 64 are disposed at positions where they overlap when the terminal 22 is rotated about axis O within a plane including the pair of wire connection portions 64. For example, when the terminal 22 is rotated about axis O from the position of the terminal 22 shown by the solid line in Fig. 5, the terminal 22 is disposed at the position shown by the two-dot chain line. At this time, one wire connection portion 64 overlaps the other wire connection portion 64 where it was originally located.

[0049] 4, in the pair of wire connection portions 64, parts of the pair of conductive portions 22B are exposed as wire connection pads 64A. One end 38B and the other end 38C of the wire 38 are soldered onto the pair of wire connection pads 64A, respectively.

[0050] The pair of external connection parts 66 are provided on the widthwise outer sides of the pair of wire connection parts 64 and below the pair of through holes 60A. In the pair of external connection parts 66, a part of the pair of conductive parts 22B is exposed in a substantially rectangular shape as a cable connection pad 66A. The pair of cables 24 are soldered on the pair of cable connection pads 66A.

[0051] Each conductive portion 22B, in the portion covered with the solder resist portion 22C, is patterned to connect the wire connection portion 64 and the external connection portion 66. This allows electricity to flow between the wire 38 soldered to the wire connection portion 64 and the cable 24 soldered to the external connection portion 66, and power is supplied from the cable 24 to the wire 38.

[0052] The solder resist portion 22C is provided at a position other than the wire connecting portion 64 and the external connecting portion 66. The wire connecting portion 64 is provided at a position away from the external connecting portion 66.

[0053] The pair of board-side protrusions 62 are each formed in a substantially T-shape when viewed from the X-axis direction. The pair of board-side protrusions 62 include a narrow board-side winding portion 62A and a board-side locking portion 62B that is formed on the tip side (lower side) of the board-side winding portion 62A and is wider than the board-side winding portion 62A.

[0054] 3, the fixing portion 52 of the lower cover 44 has a pair of bobbin side protrusions 68 at its lower end. The pair of bobbin side protrusions 68 are formed in a substantially T-shape when viewed from the X-axis direction, similar to the pair of board side protrusions 62. Specifically, the pair of bobbin side protrusions 68 have a narrow bobbin side winding portion 68A (see FIG. 7) and a bobbin side locking portion 68B that is formed on the tip side (lower side) of the bobbin side winding portion 68A and is wider than the bobbin side winding portion 68A.

[0055] One end 38B and the other end 38C of the wire 38 are respectively wound around a pair of entanglement portions 70 formed by overlapping the bobbin side protrusion 68 and the board side protrusion 62. More specifically, one end 38B and the other end 38C of the wire 38 are respectively wound around a winding portion 70A formed by overlapping the bobbin side winding portion 68A of the bobbin side protrusion 68 and the board side winding portion 62A of the board side protrusion 62 in the pair of entanglement portions 70 (see FIG. 7). The bobbin side locking portion 68B and the board side locking portion 62B form a locking portion 70B of the pair of entanglement portions 70.

[0056] 6, in the bobbin side locking portion 68B of the bobbin side protrusion 68, a corner portion on the lower end and on the terminal 22 side (positive side in the X-axis direction) is cut out along the Y-axis direction. In addition, in the board side locking portion 62B of the board side protrusion 62, a corner portion on the lower end and on the fixed portion 52 side (negative side in the X-axis direction) is cut out along the Y-axis direction. As a result, a groove portion 72 is formed along the Y-axis direction between the bobbin side locking portion 68B of the bobbin side protrusion 68 and the board side locking portion 62B of the board side protrusion 62.

[0057] 3, one end 38B of the wire 38 wound around the coil winding portion 42A of the bobbin body 42 is disposed along the surface (the radially outer surface) of the terminal 22, along the right side wall portion 54A, hung below the right protrusion portion 56, and disposed along the surface (the radially outer surface) of the terminal 22. Specifically, the end 38B is disposed along the wire connection portion 64 on the right side of the board main body portion 60.

[0058] Also, as shown in FIG. 6, one end 38B of the wire 38 is arranged along the wire connection portion 64, and then wrapped around the right-side entanglement portion 70, with the tip portion 74 hooked into the groove portion 72.

[0059] 3, the other end 38C of the wire 38 is disposed along the left side wall (not shown) and hung under the left protrusion 58, along the left wire connection portion 64. Although not shown, the tip of the other end 38C of the wire 38 is hung in a groove of the left entanglement portion 70 (see FIG. 3).

[0060] (action) Next, the operation of this embodiment will be described.

[0061] 3, in the vibration actuator 10 according to this embodiment, the terminal 22 is provided with a pair of wire connection portions 64 and a pair of external connection portions 66. In other words, one end 38B and the other end 38C of the wire 38 and a pair of cables 24 for supplying power from the outside are all soldered onto the terminal 22. This eliminates the need to separately provide dedicated parts such as lug terminals, thereby reducing the number of parts.

[0062] Furthermore, in the vibration actuator 10 according to this embodiment, the terminals 22 are formed separately from the bobbin 40. This improves the ease of soldering the pair of cables 24 to the external connection portion 66.

[0063] Furthermore, according to the vibration actuator 10 of this embodiment, as shown in Fig. 6, one end 38B and the other end 38C (see Fig. 3) of the wire 38 are respectively entangled with a pair of entanglement parts 70 including the bobbin side protrusion 68 and the board side protrusion 62. Therefore, one end 38B and the other end 38C of the wire 38 can be fixed to the pair of entanglement parts 70. Also, because the wire 38 is wound integrally around the bobbin side protrusion 68 and the board side protrusion 62, it is possible to prevent the terminal 22 from floating off the bobbin 40.

[0064] Furthermore, according to the vibration actuator 10 of this embodiment, a locking portion 50 wider than the winding portion 70A is provided on the tip side of the winding portion 70A around which one end 38B and the other end 38C (see FIG. 3) of the wire 38 are respectively wound. This makes it possible to prevent the one end 38B and the other end 38C of the wire 38 wound around the winding portion 70A from falling off to the tip side of the pair of winding portions 70A.

[0065] Moreover, according to the vibration actuator 10 of this embodiment, a groove 72 is provided between the bobbin-side protrusion 68 and the board-side protrusion 62. The tip 74 of one end 38B of the wire 38 is hooked into the groove 72 of the right-side entanglement portion 70. Similarly, the tip (not shown) of the other end 38C of the wire 38 is hooked into the groove (not shown) of the left-side entanglement portion 70. This causes the tip 74 of one end 38B of the wire 38 and the tip (not shown) of the other end 38C to be locked. Therefore, when the vibration actuator 10 vibrates, the tip 74 of one end 38B of the wire 38 and the tip (not shown) of the other end 38C of the wire 38 can be prevented from coming into contact with surrounding components and generating abnormal noise.

[0066] Furthermore, according to the vibration actuator 10 of this embodiment, as shown in FIG. 4, the pair of wire connection parts 64 are provided at an incline with respect to the short-side direction of the terminal 22. This allows the wire connection parts 64 to be wider than when the pair of wire connection parts 64 are provided along the short-side direction of the terminal 22, and increases the contact area between the one end 38B and the other end 38C of the wire 38 and the pair of left and right conductive parts 22B. Furthermore, by arranging the one end 38B and the other end 38C of the wire 38 at an angle, the distance between the one end 38B and the other end 38C of the wire 38 can be wider than when they are arranged in parallel. This prevents the temperature of the terminal 22 from rising.

[0067] Furthermore, according to the vibration actuator 10 of this embodiment, as shown in FIG. 5, the pair of wire connection parts 64 are arranged at positions where they overlap when the terminal 22 is rotated in a plane including the pair of wire connection parts 64. Therefore, when the terminal 22 is rotated from a predetermined position in a plane including the pair of wire connection parts 64, one of the wire connection parts 64 overlaps the other wire connection part 64 at the position where the other wire connection part 64 was originally located. Therefore, after soldering one end 38B of the wire 38 at one wire connection part 64, the other wire connection part 64 is arranged at the same position by rotating the terminal 22. This makes it possible to solder one end 38B and the other end 38C of the wire 38 to the pair of wire connection parts 64 without changing the positions of the solder and the tip of the soldering device (not shown).

[0068] 4, in the vibration actuator 10 according to this embodiment, the pair of wire connecting portions 64 and the pair of external connecting portions 66 are provided at separate positions on the terminal 22. Therefore, one end 38B and the other end 38C of the wire 38 and the pair of cables 24 are soldered at separate positions on the terminal 22, thereby improving durability against vibration.

[0069] Furthermore, according to the vibration actuator 10 of this embodiment, one end 38B and the other end 38C of the wire 38 are arranged so as to be hooked onto a pair of inside corners (corners) 60B, thereby preventing misalignment or loosening.

[0070] [Supplementary explanation of the above embodiment] In the above embodiment, the wiring portion is described as the terminal 22 serving as a substrate formed separately from the bobbin 40, but this is not limited thereto. For example, the wiring portion may be a printed wiring provided directly on the bobbin.

[0071] In the above embodiment, the one end 38B and the other end 38C of the wire 38 are respectively wound around the pair of entanglement parts 70, but this is not limiting and the vibration actuator may not include entanglement parts. In addition, the pair of entanglement parts 70 are described as being provided at the lower end of the terminal 22, but this is not limiting and the pair of entanglement parts 70 may be located at other positions.

[0072] Furthermore, in the above embodiment, the pair of entanglement parts 70 are described as including the winding part 70A around which the one end 38B and the other end 38C of the wire 38 are wound, and the locking part 50 that is wider than the winding part 70A, but this is not limited thereto. For example, the entanglement part may be formed in a cylindrical shape without including the locking part.

[0073] Furthermore, in the above embodiment, both the bobbin side protrusion 68 and the board side protrusion 62 are formed in a substantially T-shape, and the locking portion 50 is described as including the bobbin side locking portion 68B and the board side locking portion 62B, but this is not limited thereto. For example, only the fixed portion 52 of the bobbin 40 may be formed in a substantially T-shape, and the locking portion may be composed only of the bobbin side locking portion 68B. Also, for example, only the lower end portion of the terminal 22 may be formed in a substantially T-shape, and the locking portion may be composed only of the board side locking portion 62B.

[0074] In the above embodiment, the pair of entanglement parts 70 are described as being formed in a substantially T-shape, but this is not limited thereto. For example, the pair of entanglement parts may each be formed in a substantially trapezoidal shape that becomes wider toward the tip side when viewed from the X-axis direction. Even in this case, the wide locking part makes it difficult for the end part of the wire wound around the narrow winding part to slip off toward the tip side.

[0075] Further, in the above embodiment, as shown in Fig. 6, the tip 74 of the one end 38B of the wire 38 is hooked in the groove provided between the bobbin side protrusion 68 and the board side protrusion 62, but this is not limited thereto. For example, the groove may be formed in the bobbin side protrusion. Also, for example, the groove may be formed in the board side protrusion. [Explanation of symbols]

[0076] 10. Vibration Actuator 22 Terminal (wiring part, board) 24 Pair of Cables 38 Wire 40 Bobbin 62 Board side protrusion 64 Wire connection 66 External connection part 68 Bobbin side protrusion 70 Pair of entanglements 70A Winding section 70B Locking part 72 Groove 74 Tip

Claims

1. A bobbin with a wire wound around it; a wiring section provided on the bobbin, the wiring section including a pair of wire connection sections to which a pair of terminal portions of the wire are respectively soldered, and a pair of external connection sections to which a pair of cables for supplying electric power from an external source are respectively soldered; A vibration actuator having

2. The wiring portion is a substrate formed separately from the bobbin.

2. The vibration actuator according to claim 1.

3. The pair of terminal portions of the wire are wound around a pair of entanglement portions including a bobbin-side protruding portion formed on the bobbin and a board-side protruding portion formed on the board, The vibration actuator according to claim 2 .

4. The pair of entanglement portions each include a winding portion around which the pair of terminal portions are wound, and a locking portion formed on a tip side of the winding portion and wider than the winding portion. The vibration actuator according to claim 3 .

5. The tip ends of the pair of terminal portions of the wire are respectively provided between the bobbin side protrusion and the board side protrusion, or hooked into a groove provided in either the bobbin side protrusion or the board side protrusion. The vibration actuator according to claim 3 .

6. The pair of wire connection portions are each inclined with respect to a short-side direction of the substrate. The vibration actuator according to claim 2 .

7. the pair of wire connection parts are disposed at positions where they overlap when the substrate is rotated within a plane including the pair of wire connection parts; 7. The vibration actuator according to claim 6.

8. the pair of wire connection portions and the pair of external connection portions are provided at positions spaced apart from each other on the substrate; The vibration actuator according to claim 2 .

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