Vibrator unit

Abstract

To provide an oscillator unit that is difficult to be damaged due to vibration. 【Solution means】The oscillator unit 1 includes an oscillator 2, a vibrating body 3 connected to the oscillator 2, and a holding portion 6 that holds the oscillator 3. The oscillator 2 has a hole portion 25. The vibrating body 3 has a vibrating body main body portion 21 that contacts the object to be vibrated and a shaft portion 22 that is inserted into the hole portion 25 and fastened and fixed to the oscillator 2. The vibrating body main body portion 21 includes a bearing portion 21b. The shaft portion 22 has a male screw shape formed separately from the vibrating body main body portion 21, and one end portion is inserted into the bearing portion 21b of the vibrating body main body portion 21 and adhesively fixed thereto.

Description

Technical Field

[0001] The present invention relates to a vibrator unit including a vibrating body connected to a vibrator.

Background Art

[0002] Conventionally, a vibrator unit for massaging a subject has been known. The vibrator unit vibrates a diaphragm that contacts the treatment area of the subject by a vibrator, and the vibrator connected to the diaphragm is adhesively fixed to a holder (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a massage device using such a vibrator unit, when applying ultrasonic vibration or the like to the treatment area, a large force is applied to the diaphragm, so it is desired that the vibrator unit can be configured firmly.

[0005] The present invention has been made in view of such points, and an object thereof is to provide a vibrator unit that is less likely to be damaged due to vibration.

Means for Solving the Problems

[0006] The vibrator unit according to an aspect of the present invention includes a vibrator, a vibrating body connected to the vibrator, a holding portion that holds the vibrator, The fastening member and the covering member, and the vibrator has a hole portion, and the vibrating body has a vibrating body main body portion that contacts the object to be vibrated, front with respect to the vibrator by the fastening memberIt has a shaft portion to be fastened and fixed, the vibrating body main body portion is provided with a bearing portion, the shaft portion is male screw-shaped formed separately from the vibrating body main body portion, and one end portion is inserted into the bearing portion with respect to the vibrating body main body portion and adhesively fixed. , the other end is inserted into the hole portion and the fastening member is fastened at a position on the back side of the vibrator, the covering member is interposed between the vibrator and the vibrator body portion and is adhesively fixed to the vibrator body portion, covering the outside of the bearing portion 。

Advantages of the Invention

[0007] According to the present invention, it is difficult to be damaged due to vibration.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Embodiments for Carrying Out the Invention

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0010] In FIG. 1, reference numeral 1 denotes a vibrator unit. The vibrator unit 1 applies the vibration generated by the vibrator 2 to the vibration target by the vibrating body (vibrating plate) 3. In the present embodiment, the vibrator unit 1 is, for example, for a massaging device that performs massage by applying ultrasonic vibration to the vibration target.

[0011] As the vibrator 2, a piezoelectric vibrator is preferably used. The vibrator 2 is of a bimorph type in which piezoelectric elements 5 paired with each other are bonded with a metal plate 4 interposed therebetween. Wiring (not shown) for applying a voltage to the vibrator 2 is connected to the metal plate 4 and the piezoelectric element 5. In the present embodiment, the vibrator 2 is formed in a circular shape in plan view.

[0012] The vibrator 2 is held and protected by the holding part 6. The holding part 6 is also called a holder or a base, etc. The holding part 6 includes a holding part main body 10 and a fixing member 11, and is configured to sandwich and hold the vibrator 2 between the holding part main body 10 and the fixing member 11.

[0013] The holding part main body 10 is formed in a bottomed cylindrical shape. That is, the holding part main body 10 has a bottom part 13 and a side wall part 14 rising from the bottom part 13. The holding part main body 10 has a flat shape, that is, a thin shape, and the dimension in the direction perpendicular to the axis is larger than the dimension in the axial direction. A lead-out hole (not shown) for leading out the above wiring for electrically connecting the vibrator 2 and the control part for vibrating the vibrator 2 is formed in the bottom part 13. A receiving part 15 for receiving the outer edge part of the vibrator 2 is formed in the side wall part 14. The receiving part 15 is formed by notching the inner edge part side at the tip of the side wall part 14. The outer edge part 2a of the vibrator 2 is, for example, adhesively fixed to the receiving part 15.

[0014] In the present embodiment, the holding part main body 10 is in a bottomed cylindrical shape, the bottom part 13 is formed in a circular shape, and the side wall part 14 is in a cylindrical shape. Further, the holding part main body 10 is made of a synthetic resin, and is formed of, for example, a soft member, such as silicone.

[0015] The fixing member 11 has a lid shape attached to the opening side of the holding part main body 10. The fixing member 11 is formed in a frame shape. That is, the fixing member 11 has an opening 17, surrounds the opening 17 and has a frame part 18, and has an outer wall part 19 located along the outer surface of the side wall part 14 of the holding part main body 10 outside the frame part 18. The fixing member 11 is formed of a synthetic resin harder than the holding part main body 10.

[0016] The opening 17 is a portion that exposes the vibrator 2 to the outside of the holding portion 6. The opening 17 is formed smaller than the outer shape of the vibrator 2, and it is possible to sandwich the outer edge portion 2a of the vibrator 2 between the frame portion 18 and the receiving portion 15 of the holding portion main body 10. Further, in the present embodiment, the opening 17 is formed smaller than the maximum outer shape of the vibrating body 3. In the present embodiment, for example, the opening 17 is formed in a circular shape.

[0017] The outer wall portion 19 may be formed continuously with the entire outer edge portion of the frame portion 18, or may be formed continuously with only a part of the outer edge portion of the frame portion 18. That is, the outer wall portion 19 may be partially formed at the outer edge portion of the frame portion 18.

[0018] And the vibrating body 3, also called a stator or the like, is an output portion that outputs vibration by vibrating integrally with the vibrator 2. The vibrating body 3 has a vibrating body main body portion 21 that is a contact portion that contacts the vibration target (treatment target portion), and a shaft portion 22 for connecting the vibrating body main body portion 21 to the vibrator 2.

[0019] The vibrating body main body portion 21 is formed in a shape that gradually expands from the vibrator 2 side toward the vibration target side. In the present embodiment, the vibrating body main body portion 21 is formed in a truncated conical shape with a small diameter on the vibrator 2 side and a large diameter on the vibration target side. The most expanded portion of the vibrating body main body portion 21 is a planar contact surface 21a that contacts the vibration target. Further, a bearing portion 21b connected to the shaft portion 22 is formed in the vibrating body main body portion 21. The bearing portion 21b is the most reduced portion of the vibrating body main body portion 21 and is located at a position facing the vibrator 2 side. The bearing portion 21b is formed in a boss shape along the central axis of the vibrating body main body portion 21. The vibrating body main body portion 21 is formed of, for example, synthetic resin or the like.

[0020] The shaft portion 22 is formed separately from the vibrator main body portion 21, and is integrated with the vibrator main body portion 21 by inserting one end into the bearing portion 21b and being adhesively fixed. The shaft portion 22 is formed in a male screw shape. The shaft portion 22 is formed of, for example, a synthetic resin different from the vibrator main body portion 21. Preferably, the shaft portion 22 is formed of polypropylene (PP).

[0021] The other end of the shaft portion 22 is inserted into the hole portion 25 formed in the vibrator 2 and is fastened and fixed to the vibrator 2. That is, the other end of the shaft portion 22 is inserted through the hole portion 25 of the vibrator 2, and a nut 26, which is a fastening member, is fastened at a position on the back side of the vibrator 2. In this state, the bearing portion 21b of the vibrator main body portion 21 is positioned so as to be close to or in contact with the front side of the vibrator 2. The hole portion 25 of the vibrator 2 is opened through the metal plate 4 and the piezoelectric element 5 at the center of the vibrator 2.

[0022] Preferably, the surface of the piezoelectric element 5 of the vibrator 2 exposed from the opening portion 17 is waterproof-protected with at least a part of the periphery of the bearing portion 21b of the vibrator 3 covered by a waterproof member 30. The waterproof member 30 is formed in a thin film shape or a thin plate shape, for example, of silicone or the like, and is formed to have a thickness substantially equal to the thickness of the frame portion 18 of the fixing member 11. For example, the waterproof member 30 covers the whole or substantially the whole surface of the piezoelectric element 5 of the vibrator 2 exposed from the opening portion 17.

[0023] Also, preferably, a covering member 31 that covers the bearing portion 21b is interposed between the vibrator 2 and the vibrator main body portion 21 of the vibrator 3. The covering member 31 fills the gap between the bearing portion 21b exposed from the vibrator 2 and the vibrator main body portion 21. In the present embodiment, the covering member 31 covers the bearing portion 21b between the waterproof member 30 and the vibrator main body portion 21. The covering member 31 is formed of, for example, silicone or the like, and has a greater thickness than the waterproof member 30. Further, the covering member 31 is adhesively fixed to the vibrator main body portion 21 by an adhesive portion 32.

[0024] In addition, between the vibrating body main body portion 21 of the vibrating body 3 and the holding portion main body portion 10 or the fixing member 11 of the holding portion 6, holding members such as belts and mats for holding the vibrating body unit 1 on the treatment portion may be interposed.

[0025] When manufacturing the vibrator unit 1, first, as shown in Fig. 2(a), the vibrating body main body portion 21 is formed, an adhesive is applied inside the bearing portion 21b thereof, and the main body portion 36 of the separately formed screw 35 is press-fitted and adhesively fixed. Then, as shown in Fig. 2(b), by removing the head portion 37 of the screw 35, the remaining main body portion 36 is used as the shaft portion 22, and the vibrating body 3 integrated with the vibrating body main body portion 21 is formed.

[0026] For the formed vibrating body 3, the end portion of the shaft portion 22 is inserted into the hole portion 25 of the vibrator 2, and the nut 26 is screwed on to integrally fasten and fix it to the vibrator 2. A waterproof member 30 is attached to the surface of the piezoelectric element 5 on the side of the vibrating body main body portion 21 of the vibrator 2 facing the vibrating body 3.

[0027] Next, an adhesive is applied to the receiving portion 15 of the holding portion main body portion 10, the wiring of the vibrator 2 is inserted through the lead-out hole at the bottom 13 of the holding portion main body portion 10, and then the outer edge portion 2a of the vibrator 2 to which the vibrating body 3 is fastened and fixed is overlapped and pressed from above against the receiving portion 15, and the vibrator 2 is adhesively fixed to the holding portion main body portion 10. In this state, the end portion of the shaft portion 22 and the nut 26 on the back side of the vibrator 2 are housed inside the holding portion main body portion 10.

[0028] After that, the fixing member 11 is attached to the holding portion main body portion 10, and the outer edge portion 2a of the vibrator 2 is sandwiched between the receiving portion 15 of the holding portion main body portion 10 and the frame portion 18 of the fixing member 11. Regarding the attachment of the fixing member 11, for example, a part of the fixing member 11 is cut and split in the radial direction, and it is attached and adhesively fixed so as to sandwich the holding portion main body portion 10 from the side of the bearing portion 21b of the vibrating body 3.

[0029] Then, an adhesive is injected from the opening 17 to integrally fix the vibrator 2 to the holding part main body 10 and the fixing member 11 of the holding part 6. A covering member 31 is provided on the upper part of the waterproof member 30 located at the opening 17 of the fixing member 11 so as to cover the bearing part 21b of the vibrating body 3, and is adhesively fixed to the vibrating body main body 21 by the adhesive part 32.

[0030] Regarding the completed vibrator unit 1, the wiring led out from the holding part 6 is electrically connected to the control part, and the vibrating body 3 outputs vibration in response to the vibration of the vibrator 2 according to the signal from the control part. Therefore, by driving the vibrator unit 1 in a state where the contact surface 21a of the vibrating body 3 is brought into contact with and fixed to the part to be treated, massage is applied to the part to be treated from the vibrating body 3.

[0031] Preferably, the vibrator units 2 are used in pairs, and are preferably arranged one by one or in plural at the left and right positions of the part to be treated, for example.

[0032] Thus, according to one embodiment, regarding the vibrating body 3, the vibrating body main body 21 that comes into contact with the object to be vibrated and the shaft part 22 that is fastened and fixed to the vibrator 2 are formed separately. By inserting and adhesively fixing one end of the shaft part 22 into the bearing part 21b with respect to the vibrating body main body 21, for example, compared with the case where the vibrating body main body and the shaft part are integrally formed, it is possible to make it difficult for the long and slender shaft part 22 to break at the connection part with the vibrating body main body 21, that is, the part continuous with the bearing part 21b due to vibration. In particular, since the vibrating body main body 21 and the shaft part 22 can be manufactured from materials suitable for their respective uses, a shaft part 22 having strength capable of withstanding vibration and load can be configured regardless of the material of the vibrating body main body 21.

[0033] Regarding the holding part 6, the outer edge part 2a of the vibrator 2 is adhesively fixed to the receiving part 15 of the holding part main body 10, and the outer edge part 2a of the vibrator 2 is sandwiched between the receiving part 15 and the frame-shaped fixing member 11, thereby suppressing the peeling of the outer edge part 2a of the vibrator 2 from the receiving part 15 and firmly holding the vibrator 2 in the holding part 6.

[0034] Furthermore, by covering the vibrator 2 exposed from the fixing member 11 with the waterproof member 30, the vibrator 2 can be protected from moisture from the outside.

[0035] Also, between the vibrator 2 and the vibrating body main body portion 21, in this embodiment, between the waterproof member 30 and the vibrating body main body portion 21, a covering member 31 that covers the bearing portion 21b is interposed, and the covering member 31 is adhesively fixed to the vibrating body main body portion 21. fixed While doing so, the gap between the vibrating body 3 and the vibrator 2 can be closed or narrowed, the load on the bearing portion 21b and the shaft portion 22 can be suppressed, and for example, when the vibration target (the portion to be treated) is a portion with hair such as the head of a subject, it is possible to suppress the hair such as hair from getting entangled on the outer peripheral side of the bearing portion 21b.

[0036] In this way, the vibrator unit 1 of this embodiment can be configured to be difficult to be damaged due to vibration. Therefore, for example, the vibrator unit 1 of this embodiment is suitable as a vibrator unit 1 for a massage device that applies ultrasonic vibration to a vibration target. That is, it is possible to provide a vibrator unit 1 that is difficult to be damaged by the load caused by vibration even when the vibrator 2 and the vibrating body 3 vibrate finely and at high speed.

[0037] Note that in the above-described embodiment, the shaft portion 22 is manufactured using the screw 35 having the head 37, but it is not limited thereto, and for example, it may be manufactured using a screw in the shape of a slug without a head.

[0038] Also, the waterproof member 30 and the covering member 31 are not limited to being separate bodies, and may be integrally formed.

Explanation of Reference Numerals

[0039] 1 Vibrator unit 2 Vibrator 2a Outer edge portion 3 Vibrating body 6 Holding portion 10 Holding portion main body portion 11 Fixing member 15 Receiving portion 21 Vibrating body main body portion 21 bBearing part 22 Shaft part 25 Hole part 26 fastening member 30 Waterproof member 31 Covering member

Claims

1. A vibrator; A vibrating body connected to the vibrator; A holder for holding the vibrator; A fastening member; A covering member, The transducer has a hole, The vibrating body is A vibrator main body that is brought into contact with a vibration target; a shaft portion fastened and fixed to the vibrator by the fastening member, The vibration body main body includes a bearing portion, the shaft portion is a male screw formed separately from the vibrator body, one end of the shaft portion is inserted into the bearing portion and adhesively fixed to the vibrator body, and the other end of the shaft portion is inserted into the hole portion and the fastening member is fastened to a position on the rear side of the vibrator, The cover member is interposed between the vibrator and the vibration body main body, is adhesively fixed to the vibration body main body, and covers the outside of the bearing portion. A transducer unit characterized by:

2. The holding part is a holder body having a receiving portion to which an outer edge of the vibrator is adhesively fixed; a frame-shaped fixing member attached to the holder body and sandwiching an outer edge of the vibrator between the holder body and the receiving portion; 2. The vibrator unit according to claim 1.

3. Equipped with a waterproof member that covers the vibrator exposed from the fixing member 3. The vibrator unit according to claim 2.

4. A transducer unit for a massage device that applies ultrasonic vibrations to a target object.

4. The transducer unit according to claim 1, wherein the transducer unit is a piezoelectric element.

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