JP-2026076355-A - vibrator unit

Abstract

[Problem] To provide a vibrator unit that appropriately dampens vibrations in a magnetic circuit. [Solution] The transducer unit 1D comprises a housing having a cylindrical housing body 221 and a top plate 211 connected to the voice coil 3; a magnetic circuit consisting of a yoke 43, a magnet 41 and a plate 42 located above the magnet, which is arranged to float within the housing on the central axis P; an annular first support member 35A located between the top plate 211 and the cylindrical portion 432 of the yoke 43; and a disc-shaped second support member 35B located between the bottom surface of the housing body 221 and the bottom plate portion 431 of the yoke 43. [Selection Diagram] Figure 7

Inventors

• 加藤 利文

Assignees

• パイオニア株式会社
• 東北パイオニア株式会社

Dates

Publication Date

20260511

Application Date

20260219

Claims (5)

1. A cylindrical enclosure body and an enclosure having a top plate, A magnetic circuit located within the housing consists of a yoke, a magnet, and a plate located above the magnet, The system includes a first support member located between the top plate and the magnetic circuit, The vibrator unit is characterized in that the first support member is annular in shape.
2. The vibrator unit according to claim 1, characterized in that the magnetic circuit and the housing are located coaxially.
3. The oscillator unit according to claim 1 or 2, characterized in that the magnetic circuit is an internal magnetic circuit in which the yoke comprises a disc-shaped bottom plate portion and a cylindrical tube portion formed to rise from the outer edge of the bottom plate portion.
4. The oscillator unit according to claim 1 or 2, characterized in that the magnetic circuit is an external magnetic type magnetic circuit comprising the yoke having a disc-shaped bottom plate portion, a column portion located approximately in the center of the bottom plate portion, and the magnet and plate located radially outside the column portion.
5. The vibrator unit according to any one of claims 1 to 4, further comprising a second support member located between the bottom surface of the housing body and the magnetic circuit.

Description

This invention relates to a vibrator unit. A vibration unit that allows humans to perceive vibrations is known (see Patent Document 1). The vibrator unit described in Patent Document 1 supports a magnetic circuit component within a case using a support member, and the magnetic circuit component vibrates when an electric current flows through a coil attached to the case. The transducer unit described in Patent Document 1 comprises a cylindrical housing connected to a built-in voice coil, a magnetic circuit configuration consisting of a magnet, a plate and pole yoke facing the magnet and constituting a magnetic gap for the voice coil, and positioned coaxially within the housing in a floating state, and a plurality of support members that support the magnetic circuit configuration within the housing and support the vibration of the magnetic circuit configuration. In particular, the support member described in Patent Document 1 is fixed to the magnetic circuit component and housing using an adhesive. WO2012/114377A1 publication This is a cross-sectional view showing a vibrator unit according to a first embodiment of the present invention.This is an exploded perspective view of the aforementioned oscillator unit.This is a diagram illustrating the manufacturing method of the vibrator unit.This is a cross-sectional view showing a vibrator unit according to a second embodiment of the present invention.This is a cross-sectional view showing a vibrator unit according to a third embodiment of the present invention.This is a cross-sectional view showing a vibrator unit according to a fourth embodiment of the present invention.This is a cross-sectional view showing a vibrator unit according to a fourth embodiment of the present invention. The following describes one embodiment of the present invention. The transducer unit according to this embodiment comprises a housing having a cylindrical housing body and a top plate connected to a voice coil; a magnetic circuit consisting of a yoke, a magnet, and a plate located above the magnet, arranged coaxially and floating within the housing; a first support member located between the top plate and the magnetic circuit; and a second support member located between the bottom surface of the housing body and the magnetic circuit. Specifically, the first support member is held between the top plate and the magnetic circuit, and the second support member is held between the bottom surface of the housing body and the magnetic circuit. This allows the first and second support members to be positioned appropriately without the use of adhesive. Therefore, unlike the prior art, variations in vibration damping characteristics due to adhesive application can be suppressed, while the vibration of the magnetic circuit can be appropriately damped by the appropriate positioning of the first and second support members. Furthermore, even when adhesive is applied to the upper and lower surfaces of the first and second support members, or to either of these surfaces, the adhesive serves only as an auxiliary fixing means for positioning and maintaining these members. Since the elasticity of these members allows them to hold themselves in place, the application of the adhesive has virtually no effect on the damping characteristics. Thus, even with the use of adhesive, vibrations in the magnetic circuit can be appropriately dampened. Furthermore, the first and second support members may be formed such that their deformation amounts under a predetermined force are approximately equal. This ensures that there is no difference in vibration damping characteristics between the vertical and horizontal directions, allowing for appropriate damping of vibrations in the magnetic circuit. Furthermore, the first and second support members may be formed such that the areas of their upper and lower surfaces are approximately equal, and the areas of the surfaces of the first and second support members may also be approximately equal. This allows for appropriate damping of vibrations in the magnetic circuit. Furthermore, at least one of the first and second support members may be formed with a trapezoidal cross-sectional shape. This allows for compression of at least one of the first and second support members due to vibrations from the magnetic circuit. This compression gradually increases resistance, thus preventing bottoming out (where the vibration force exceeds the limit of the damping amplitude and is transmitted directly to the housing). Furthermore, if both the first and second support members are formed with a trapezoidal cross-sectional shape, the long side of the first support member and the long side of the second support member may be arranged to abut against the magnetic circuit, or the short side of the first support member and the short side of the second support member may be arranged to abut against the magnetic circuit. Furthermore, the magnetic circuit is an external magnetic type magnetic circuit