JPH08228391A - Body feeling oscillator and its attaching structure - Google Patents

Abstract

PURPOSE: To provide a body feeling oscillator which is superior in durability and is firmly attached to a sheet frame or a sheet spring in a close contact. CONSTITUTION: A case 11 provided with plural recessed parts 11b in the inner peripheral wall, a cylinder body 15 which has a voice coil 14 wound around the outer peripheral part, and a magnetic pole 13 are provided. The magnetic pole 13 can be displaced in the direction of the center line of the case 11 and the radial direction through elastic bodies 19, which are fitted to recessed parts 11b and are made of rubber, and is supported on the case 11 rotatably around the cylindrical body 15. Plural hooking projections 11d projecting in the axial direction of the case 11 are provided in the outer peripheral part of the case 11 as one body in positions symmetrical with respect to the axis. A rubber band 25 is stretched between a sheet frame 32 or a sheet spring 33 and hooking projections 11d to fix this oscillator to the sheet frame 32 or the sheet spring 33 in a close contact.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used by attaching to a human body placing object such as a sheet and applying a sensible vibration synchronized with a voice signal to the same placing object to enable a realistic sound reproduction. And its mounting structure.

[0002]

2. Description of the Related Art As a form of this type of vibrator, Japanese Utility Model Publication No. 1-23454 discloses a case, a cylindrical body around which a voice coil is wound, and a width in which the voice coil can be inserted without contact. With a magnetic pole having an annular gap, the cylindrical body is fixed to a case so that the voice coil is inserted into the annular gap, and the magnetic pole includes a leaf spring-shaped metal damper and a rubber elastic body. The sensation vibrator supported by the case via the above is described. Further, as one type of structure for mounting this type of vibrator on a sheet, in Japanese Utility Model Laid-Open No. Sho 58-199682, a metal plate is fixed to the top surface of the vibrator case, and the metal plate projects in the radial direction of the cylindrical case. It is described that a hook is provided, and a coil spring is locked between the seat frame or the seat spring and the hook to be attached to the seat.

[0003]

In the above-described conventional sensible vibrator, it is possible to stably generate vibration by disposing the voice coil in the annular gap of the magnetic pole so that the center of the voice coil and the center of the magnetic pole coincide with each other. It is structured on the premise that it is an indispensable requirement. In order to meet such requirements, in the conventional sensible vibrator, only the magnetic pole is displaced in the center line direction of the case, but the magnetic pole is elastically deformed in the center direction so as not to be displaced in the radial direction of the case, but elastically deformed in the radial direction. It is supported on the case using a hard leaf spring-shaped metal damper. However, metal fatigue inevitably occurs in the metal damper, and the durable life of the sensible vibrator is short. Further, since the leaf spring-shaped metal damper has a large rigidity, it has poor followability to changes in the current flowing in the voice coil, particularly to the current flowing in pulses, and lacks fidelity in converting a voice signal into vibration. Further, in the above-described sensation vibrator mounting structure, the coil spring is locked to the hook to mount the sensation vibrator on the seat, but since the hook protrudes in the radial direction of the cylindrical body case, Even if the coil spring is stretched between the frame and the seat spring and the hook, the spring force of the coil spring does not act in the direction of pressing the case against the seat frame or the seat spring. For this reason,
Since the vibrator does not strongly adhere to the seat frame and the coil spring, the transmission efficiency of the vibration generated by the sensation vibrator to the seat is poor. The present invention, in view of the above problems,
An object of the present invention is to provide a sensation vibrator that can obtain high durability and fidelity, and to provide a mounting structure of the sensation vibrator that can firmly adhere to a seat frame or a seat spring.

[0004]

Means for Solving the Problems In the research for improving the durable life and fidelity of a sensible vibrator, the inventor of the present application places a voice coil in an annular gap so that the center of the voice coil and the center of the magnetic pole are necessarily aligned with each other. We discovered the fact that vibrations occur stably even without placement. That is, even if the magnetic pole is supported by the case so as to be displaceable in the radial direction of the case, when a current flows through the voice coil, magnetic repulsion occurs between the voice coil and the magnetic pole, and the center of the voice coil and the center of the magnetic pole coincide with each other. , It was found that it is not necessary to support the magnetic pole in the case with a metal elastic body so that the magnetic pole is not displaced in the radial direction, but rather it is convenient to support the magnetic pole so that it can be displaced in the radial direction in order to improve fidelity. . The sensation vibrator according to claim 1 was invented based on such knowledge, and a case having a plurality of recesses in an inner peripheral wall, a cylindrical body having a voice coil wound around an outer peripheral portion, and the voice coil A magnetic pole provided with an annular gap having a width that allows insertion without contacting, the cylindrical body is fixed to the case so that the voice coil is inserted into the annular gap, and the magnetic pole is provided in the recess. It is characterized in that it is supported on the case so as to be displaceable in the center line direction and the radial direction of the case via the fitted elastic body made of rubber, and to be rotatable around the cylindrical body. The invention according to claim 2 provides a case in which a plurality of recesses are provided on the inner peripheral wall, a cylindrical body around which a voice coil is wound, and an annular gap having a width into which the voice coil can be inserted without contact. A magnetic pole, the cylindrical body is fixed to the case such that the voice coil is inserted into the annular gap, and the magnetic pole is inserted through the rubber elastic body fitted in the recess to the centerline direction of the case. And a mounting structure for mounting a sensible vibrator, which is supported in the case so as to be displaceable in a radial direction and rotatable about the cylindrical body, on a seat, in an axial direction of the case on an outer peripheral portion of the case. A plurality of latching protrusions projecting in the same direction at symmetrical positions with respect to the axis, and a rubber band is hung between the seating frame or seat spring and the latching protrusion to mount the sensible vibrator on the seat frame. Others characterized by tightly fixed to the seat springs. According to a third aspect of the present invention, in the mounting structure for a sensible vibrator according to the second aspect, an upper end portion of the latching protrusion is curved in an axial direction of the cylindrical case.

[0005]

According to the first aspect of the present invention, when an electric current is applied to the voice coil, the magnetic poles are displaced in the radial direction due to the magnetic repulsion at the beginning of the energization so that they are not in contact with the voice coil and are slightly moved in the center line direction. It vibrates and floats in the air, and slowly rotates in that state. The rotation stops at the position where the weight of the magnetic pole is supported by the rubber elastic body in the most balanced manner, and at that position it vibrates in the direction of the center line. Therefore, the sensible vibrator according to the present invention uses a rubber elastic body that does not cause metal fatigue as a means for supporting the magnetic pole in the case, and rotates the magnetic pole to a position where the rubber elastic body supports the magnetic pole in the most balanced manner. Since it is supported by, the durable life of the sensory vibrator is greatly improved. In addition, since the rubber elastic body has low rigidity, it is possible to faithfully convert a voice signal into vibration. According to the invention of claim 2, the plurality of hooking protrusions are provided so as to project in the axial direction of the case of the sensible vibrator, and are integrally provided at symmetrical positions with respect to the axial center of the case.
The rubber band can be stretched between the seat frame or the seat spring and the latching protrusion so that the elasticity of the rubber band acts in the direction in which the sensible vibrator is brought into close contact with the seat frame or the seat spring. Therefore, since the sensation vibrator can be firmly fixed to the seat frame or the seat spring by the elasticity of the rubber band, the vibration generated by the sensation vibrator is efficiently transmitted to the seat. Also,
The rubber band can be easily passed between the latching protrusion and the seat frame or seat spring, making it easy to attach the sensible vibrator to the seat, and specially and post-processing various types of ready-made seats with different dimensions and structures. The sensation vibrator can be easily attached without applying. According to the invention of claim 3, since the upper end portion of the latching projection is curved in the axial direction of the case, the rubber band is hard to come off and can be securely latched.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.
0 is shown. The vibrator 10 is a cylindrical case 11 having a bottom, and a cover 1 for covering an upper opening of the case 11.
2, magnetic pole 13 and voice coil 1 built in the case 11
It has a cylindrical body 15 in which 4 is wound. A flange 11c is provided on the bottom surface of the bottomed cylindrical case 11, and a pair of hooking protrusions 11d protruding in the axial direction of the case 11 are integrally formed on the flange 11c at four positions symmetrical with respect to the axial center of the case 11. It is provided in. As shown in FIG. 1, each hooking protrusion 11d is formed so that its upper end portion is curved in the axial direction of the case 11.

The magnetic pole 13 is a cylindrical yoke 16 having a flange portion 16a at its lower end, and an annular magnet 1 is mounted and fixed on the flange portion 16a so as to surround the yoke 16.
7, a ring-shaped upper plate 18 adhered and fixed to the upper surface of the magnet 17, and the yoke 16, the magnet 17 and the upper plate 18 are assembled concentrically with each other and have a ring-shaped gap S between the yoke 16 and the magnet 17. It constitutes the circuit. The annular gap S has a width that allows the voice coil to be inserted without contact. The outer diameters of the flange portion 16a and the upper plate 18 are set to be slightly smaller than the outer diameter of the magnet 17, and the annular portion 17a is formed by the outer peripheral portion of the flange portion 16a and the upper plate 18 and the upper and lower surfaces of the magnet 17.
17b are sectioned.

Protrusions 11a having a semicircular cross-sectional shape are provided on the inner wall of the case 11 at equal angular intervals parallel to the center line, and adjacent protrusions 11a define groove-like recesses 11b. . The magnetic pole 13 is a rubber tube 1 press-fitted between the groove-shaped recess 11b and the annular step portions 17a and 17b.
The flange portion 16a is attached to the inner wall of the case 11 in a state where the flange portion 16a is lifted from the bottom surface of the case 11 by way of the intermediary of 9 and 9. As shown in FIG. 2, the rubber tubes 19 are arranged densely and densely depending on the parts.

An inner plate 20 is attached to the inside of the cover 12, and is fixed to the upper end of the case 11 with a screw 21 together with the cover 12. A through hole 20a is formed in the center of the inner plate 20.
On the other hand, a ring plate 22 made of an insulating material such as rubber is adhered and fixed to the outer periphery of the upper portion of the cylindrical body 15. Cylinder 1
Reference numeral 5 covers the yoke 16 through the center hole 20a so that the voice coil 14 is inserted into the gap S between the yoke 16 and the magnet 17, and the ring plate 20 is fixed to the inner plate 22 with the screw 23 and fixed to the case 11. Has been done.

The sensible vibrator according to the present embodiment has the above-mentioned structure. When an audio signal current is applied to the voice coil 14,
Magnetic interference occurs between the magnetic pole 13 and the voice coil 14,
At the beginning of the energization, the magnetic pole 13 is displaced in the radial direction due to the repulsion of the magnetic force so as not to come into contact with the voice coil 14, and is slightly vibrated in the direction of the center line to float in the air. The rotation stops at a position where the weight of the above is supported by the rubber tube 19 in the most balanced manner, and the center vibrates at that position. Therefore, in the sensible vibrator according to the present embodiment, the magnetic pole 13 is provided in the case 11.
Since the rubber tube 19 which does not cause metal fatigue is used as the means for supporting the magnetic poles 13 and the magnetic poles 13 are supported so as to rotate to the position supported by the rubber tube 19 in the most balanced manner, the durable life of the sensible vibrator is significantly improved. To do. Further, since the rubber tube 19 has low rigidity, it is possible to faithfully convert a voice signal into vibration. Particularly, according to the present embodiment, the groove-shaped recesses 11b are formed at a plurality of locations on the inner wall of the case 11.
And the magnetic pole 13 is attached to the case 11 via the rubber tube 19 inserted in the recess 11b.
The supporting force of the rubber tube 19 can be adjusted by changing the number and hardness of the rubber tube 19 according to the portion of the inner wall. Therefore, for example, as shown in FIG.
When the rubber tube 19 is mounted horizontally on the seat cushion portion 31 of the seat 30, the rubber tube 19 is evenly arranged on the inner wall of the case 11, and when the rubber tube 19 is mounted on the seat back portion 32, among the parts of the inner wall of the case 11, A large number of rubber tubes 19 are arranged in the portion where the weight of the magnetic pole 13 is concentrated and compared with other portions, so that the magnetic pole 13 is supported in a well-balanced manner with respect to the case 11 regardless of the mounting angle of the case 11. Is possible.

Although the magnetic pole 13 is attached to the case 11 via the rubber tube 19 in this embodiment, the rubber elastic body may be a rubber ball or a rubber block. Further, in this embodiment, the rubber tube 1
Although the groove-shaped recess 11b is provided on the inner wall of the case 11 as a recess for inserting 9, when a rubber ball or a rubber block is used as the rubber elastic body, the shape and size of the recess are adjusted according to the shape and size. Of course should be changed.

Next, a method of attaching the sensation vibrator 10 to the vehicle seat will be described. In the vehicle seat 30 shown in FIG. 4, the seat cushion 31 is provided with an elongated plate-shaped seat cushion frame 32. Therefore, two ring-shaped rubber bands 25 are stretched over the seat cushion frame 32, and As shown in FIG. 5, the end of the rubber band 25 is hooked on the hooking protrusion 11d. In this way, the sensation vibrator 1
The bottom surface of 0 is tightly fixed to the seat cushion frame 32 by the elasticity of the rubber band 25. Alternatively, an S-shaped seat spring 33 stretched over the seat cushion 31.
It can also be attached to. When attaching to the seat spring 31, as shown in FIG.
It is fitted to the cylindrical case 11 so as to be located inside 1d, and the rubber band 25 is connected to the seat spring 33 by the clip 26 to connect the sensible vibrator 10 to the seat spring 33.
Stick to

Since the vehicle seat 40 shown in FIG. 7 includes the seat cushion 41 and the rod-shaped seat cushion frame 42, the rubber bands 25 are stretched over the two seat cushion frames 42, and the end portions of the sensible vibrator 10 are arranged. The sensation vibrator 10 is fixed by being hooked on the protrusion 11d. Since the vehicle seat 50 shown in FIG. 8 is provided with the seat cushion 51 having a plate-shaped seat cushion frame 52 having a large number of holes 52a, the rubber band 25 is removed by the holes 52a.
And hangs it over the same frame 52, and the end is hooked on the protrusion 11d of the sensible vibrator 10. The vehicle seat 60 shown in FIG. 9 is provided with a lumbar support frame 62 for supporting the occupant's waist on the seat back 61. Therefore, the rubber band 25 is stretched over the lumbar support frame 62 and the end portion is hooked on the protrusion 11d. Then, the sensation vibrator 10 is fixed to the lumbar support frame 62.

According to this embodiment, since the hooking protrusion 11d is provided so as to project in the axial direction of the cylindrical case 11 of the sensation vibrator 10, the elastic force of the rubber band 25 causes the sensation vibrator 10 to move into the seat frames 32, 42. , 52, 62 or the rubber band 2 so as to act in the direction of closely contacting the seat spring 33.
5 can be bridged between the seat frame 32, 42, 52, 62 or the seat spring 33 and the protrusion 11d. Therefore, the sensation vibrator 10 can be firmly fixed to the seat springs 32, 42, 52, 62 or the seat spring 33 by the elasticity of the rubber band 25, so that the vibration generated by the sensation vibrator 10 can be efficiently applied to the seats 30, 40, 50 ,. 6
Transmit to 0.

Further, since the pair of hooking protrusions 11d are provided at symmetrical positions with respect to the axial center of the cylindrical case 11, the rubber band 25 is used for the rubber band 25 and the seat frames 32, 42, 52, and 6.
2 or seat spring 33
In addition to facilitating the work of attaching the sensation vibrator 10 to the sheets 30, 40, 50, 60, the sensation can be obtained without performing special processing or post-processing on various ready-made sheets 30, 40, 50, 60 having different sizes and structures. The vibrator 10 can be attached. Further, the upper end of the hooking protrusion 11d is attached to the case 11
Since it is curved in the axial direction, the rubber band 25 is hard to come off and can be securely hooked.

[Brief description of drawings]

FIG. 1 is a front view showing a sensible vibrator according to an embodiment of the present invention.

FIG. 2 is a partially cutaway plan view showing the same moving element.

FIG. 3 is a sectional view showing the same-feeling oscillator.

FIG. 4 is a perspective view showing a method of attaching the same-feeling vibrator to a seat provided with a plate-shaped seat cushion frame.

FIG. 5 is a partially enlarged front view showing a state where the same-feeling vibrator is attached to a plate-shaped seat cushion frame.

FIG. 6 is a perspective view showing a state where the same-feeling vibrator is attached to a seat spring of a vehicle seat.

FIG. 7 is a perspective view showing a method of attaching the same-feeling vibrator to a seat provided with a rod-shaped seat cushion frame.

FIG. 8 is a perspective view showing a method of attaching the same-feeling vibrator to a seat provided with a seat cushion frame having a hole.

FIG. 9 is a perspective view showing a method of attaching the same-feeling oscillator to a seat provided with a lumbar support frame.

[Explanation of symbols]

10 ... Sensory vibrator, 11 ... Case, 11a ...
1b ... Groove-shaped recess, 11c ... Flange, 11d ... Latching projection, 12 ... Cover, 13 ... Magnetic pole, 14 ... Voice coil,
15 ... Cylindrical body, 16 ... Yoke, 16a ... Flange part, 1
7 ... Magnet, 17a, 17b ... Step, 18 ... Upper plate, 19 ... Rubber tube, 20 ... Inner plate, 2
2 ... Ring plate, 25 ... Rubber band, 26 ... Clip, 30 ... Vehicle seat, 31 ... Seat cushion, 3
2 ... Seat cushion frame, 33 ... Seat spring, 40 ... Vehicle seat, 41 ... Seat cushion, 4
2 ... Seat cushion frame, 50 ... Vehicle seat,
51 ... Seat cushion, 52 ... Seat cushion frame, 52a ... Hole, 60 ... Vehicle seat, 61 ... Seat back, 62 ... Lumber support frame, S ... Gap.

[Procedure amendment]

[Submission date] March 29, 1995

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be amended] Title of invention

[Correction method] Change

[Correction content]

[Title of Invention] Sensation vibrator and its mounting structure ────────────────────────────────────── ───────────────

[Procedure amendment]

[Submission date] June 14, 1995

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be amended] Title of invention

[Correction method] Change

[Correction content]

Patent application title: Sensitive vibrator and its mounting structure

Claims (3)

[Claims] 1. A case having a plurality of recesses on an inner peripheral wall,
A cylindrical body around which a voice coil is wound and a magnetic pole having an annular gap having a width that allows the voice coil to be inserted without contacting the voice coil are inserted into the annular gap by the voice coil. So that the magnetic poles can be displaced in the center line direction and the radial direction of the case via a rubber elastic body fitted in the recessed portion, and can be rotated around the cylindrical body. A vibrating sensor which is supported by a case. 2. A case having a plurality of recesses on an inner peripheral wall,
A cylindrical body around which a voice coil is wound and a magnetic pole having an annular gap having a width that allows the voice coil to be inserted without contacting the voice coil are inserted into the annular gap by the voice coil. So that the magnetic poles can be displaced in the center line direction and the radial direction of the case via a rubber elastic body fitted in the recessed portion, and can be rotated around the cylindrical body. A mounting structure for mounting a sensible vibrator supported on a case to a seat, wherein a plurality of latching protrusions projecting in the axial direction of the case are integrally formed on an outer peripheral portion of the case at symmetrical positions with respect to the axial center. A sensation characterized by providing a rubber band between the seat frame or seat spring and the latching projection to tightly fix the sensation vibrator to the seat frame or seat spring. Mounting structure of Doko. 3. The mounting structure for a sensible vibrator according to claim 2, wherein an upper end portion of the latching protrusion is curved in an axial direction of the cylindrical case.