JP2012139616A - Method for fixing vibration motor, and vibration generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for simply and inexpensively fixing a vibration motor to a substrate or a housing without requiring a complex process, and a thin vibration generator that can be obtained by the method.SOLUTION: The thin vibration generator 10 can be obtained by arranging a thermoplastic or thermosetting sheet-like resin material 13 to a vibration motor 12 provided with an eccentricity weight 122 in a rotating part, and optionally generating vibration so as to contact a substrate 11 or a housing with the vibration motor 12, and by fixing the substrate 11 or the housing and the vibration motor 12 with the resin material 13.

Description

  The present invention relates to a vibration motor fixing method and a vibration generator.

  Conventionally, for example, in a mobile phone device, a vibration generator having an eccentric weight attached to a rotating part of a vibration motor is added, and an incoming call is notified by vibration as necessary. Some game machines are designed to improve game play by transmitting vibrations generated by a vibration motor in the machine to the operator in accordance with the game situation.

  On the other hand, in the vibration generator as described above, inadvertent dropping accidents are assumed, the vibration motor is held in the container case via an elastic body such as silicon rubber, and the impact is absorbed by this elastic body. Thus, the shaft portion of the rotating portion is prevented from being deformed or damaged due to the mass addition of the eccentric weight (see Patent Documents 1 and 2). There has also been proposed a method of fixing the motor body with a holder formed of a single metal thin film via an elastic sheet (see Patent Document 3).

  However, when the vibration generator is attached to the container case via an elastic body as in the former, the vibration generator cannot be thinned. In the latter case, a complicated process such as first cutting a plurality of cuts into the metal plate to form a comb-shaped contact portion and then bending it into the shape of the motor holder is required.

JP2003-145049 JP-A-8-140301 JP 2005-198366 A

  An object of the present invention is to provide a method for fixing a vibration motor to a substrate or a housing in a simple and inexpensive manner without requiring complicated steps, and a thin vibration generator that can be obtained by this method. .

In order to achieve the above object, the present invention provides:
A method of fixing a vibration motor to a substrate or a housing,
A sheet-like thermoplastic or thermosetting resin material is disposed so as to be in contact with the substrate or the housing and the vibration motor, and the substrate or the housing and the vibration motor are fixed with the resin material. The present invention relates to a method for fixing a vibration motor.

  According to the present invention, the substrate or the housing and the vibration motor are fixed by the thermoplastic or thermosetting resin material arranged so as to be in contact with each other. Such a resin material is thinner than an elastic body such as rubber, and if necessary, the vibration motor is attached to the substrate or the housing by contacting a specific portion of the substrate or the housing with a specific portion of the vibration motor. Can be fixed. Therefore, compared with the case where the vibration motor is fixed through an elastic body arranged in the casing where the vibration motor is arranged, and the case where the vibration motor is fixed with a metal holder, a complicated process is not required. In addition, the vibration motor can be fixed to the substrate or the housing easily and inexpensively.

  In addition, the resin material is thin compared to the elastic body, and if necessary, it is sufficient to bring a specific part of the substrate or housing and a specific part of the vibration motor into contact with each other, so that the resin used to fix the vibration motor is used. The amount of material can be reduced. Therefore, the vibration generator obtained by the fixing method described above can be thinned.

  In one example of the present invention, the resin sheet can be a thermosetting resin sheet. In this case, the substrate or the case and the vibration motor can be firmly bonded and fixed by the cured body obtained by heat softening or heat melting the resin sheet.

  As described above, according to the present invention, there is provided a method for fixing a vibration motor to a substrate or a housing in a simple and inexpensive manner without requiring complicated steps, and a thin vibration generator that can be obtained by this method. be able to.

It is a front view for demonstrating the fixing method of the vibration motor in 1st Embodiment. It is a side view for demonstrating the fixing method of the vibration motor in 1st Embodiment. Similarly, it is a front view for explaining a fixing method of the vibration motor in the first embodiment. It is a front view for demonstrating the modification of the fixing method of the vibration motor in 1st Embodiment. It is a side view for demonstrating the modification of the fixing method of the vibration motor in 1st Embodiment. Similarly, it is a front view for explaining a modification of the vibration motor fixing method in the first embodiment. It is a front view for demonstrating the other modification in the fixing method of the vibration motor in 1st Embodiment. It is a side view for demonstrating the other modification in the fixing method of the vibration motor in 1st Embodiment. Similarly, it is a front view for explaining another modification in the fixing method of the vibration motor in the first embodiment. It is a front view for demonstrating the other modification in the fixing method of the vibration motor in 1st Embodiment. It is a side view for demonstrating the other modification in the fixing method of the vibration motor in 1st Embodiment. Similarly, it is a front view for explaining another modification in the fixing method of the vibration motor in the first embodiment. It is a front view for demonstrating the fixing method of the vibration motor in 2nd Embodiment. It is a side view for demonstrating the fixing method of the vibration motor in 2nd Embodiment. Similarly, it is a front view for explaining a fixing method of the vibration motor in the first embodiment. It is a front view for demonstrating the modification of the fixing method of the vibration motor in 2nd Embodiment. Similarly, it is a side view for demonstrating the modification of the fixing method of the vibration motor in 2nd Embodiment.

  Hereinafter, other features and advantages of the present invention will be described in detail based on embodiments for carrying out the invention.

(First embodiment)
1 to 3 are process diagrams for explaining a method of connecting a vibration motor in the present embodiment. 1 and 3 are front views for explaining a connection method of the vibration motor, and FIG. 2 is a side view regarding the connection method of the vibration motor shown in FIG.

  First, as shown in FIGS. 1 and 2, a substrate or casing 11 and a vibration motor 12 are prepared. The board | substrate or the housing | casing 11 can be comprised from the metal plate etc. which coat | covered glass, ceramic, resin (BT, PET, etc.), glass epoxy (FR-4, FR-5), a metal oxide, for example. In addition, when the code | symbol 11 shows a housing | casing, in this embodiment, it shows the one surface part of a housing | casing.

  The vibration motor 12 uses a cylinder type motor (diameter: 4.0 mm, longitudinal length: 11.1 mm) whose longitudinal dimension is larger than the radial dimension. The output shaft 121 protrudes at the end, and an eccentric weight 122 is attached to the tip end portion thereof. The eccentric weight 122 is made of a material having a large specific gravity such as tungsten. By rotating the weight 122, the eccentric weight 122 is configured to apply vibration to the entire apparatus through the substrate 11 or the housing to which the vibration motor 12 is attached. ing.

  In addition, a power feeding unit 123 for supplying a current to the motor main body 120 is provided on the side of the motor main body 120 opposite to the output shaft 121, and leads 124 to the substrate 111 or the pad 111 of the housing 11. It is electrically connected via.

  As shown in FIGS. 1 and 2, the motor main body 120 is covered with a resin sheet 13 cut to a predetermined length, and an end portion of the resin sheet 13 is fixed in contact with the substrate or the housing 11, so that the vibration generator is provided. 10 is constituted. As the resin sheet 13, a thermosetting resin sheet or a thermoplastic resin sheet can be used. In addition, the contact fixation of the resin sheet 13 with respect to the board | substrate or the housing | casing 11 can also be performed through a predetermined adhesive agent, and can also be performed so that the resin sheet 13 may be partially melted and fixed.

  As the thermosetting resin sheet, epoxy resin, acrylic resin, urethane resin, melamine resin, phenol resin, or the like can be used. As the thermoplastic resin sheet, polyethylene resin, polypropylene resin, polyester resin, polyamide resin, polysilicone resin, or the like can be used.

  According to the present embodiment, the vibration generator 10 is configured such that the substrate or casing 11 and the motor main body 120, that is, the vibration motor 12 are fixed by the resin sheet 13 disposed so as to be in contact with each other. I am doing so. The resin sheet 13 is thinner than an elastic body such as rubber, and as shown in FIGS. 1 and 2, if a part of the substrate or the casing 11 and a part of the outer peripheral surface of the motor body 120 are brought into contact with each other, as shown in FIGS. The vibration motor 12 can be fixed to the substrate or the casing 11. Therefore, compared with the case where the vibration motor is fixed through an elastic body arranged in the casing where the vibration motor is arranged, and the case where the vibration motor is fixed with a metal holder, a complicated process is not required. In addition, the vibration motor can be fixed to the substrate or the housing easily and inexpensively.

  Further, the resin sheet 13 is thinner than the elastic body, and as described above, the resin sheet 13 only needs to contact a part of the substrate or the casing 11 and a part of the motor main body 120. The amount of the resin sheet 13 used for fixing 12 can be reduced. Therefore, the vibration generator 10 obtained by the fixing method described above can be thinned.

  In the present embodiment, the resin sheet 13 can be a thermosetting resin sheet. In this case, as shown in FIG. 3, by heating the resin sheet 13, the thermosetting resin sheet is softened and remains soft across the substrate or part of the housing 11 and part of the motor body 120. It melts and the contact part of the part of the board | substrate or the housing | casing 11 and the motor main body 120 spreads along each surface, and it hardens | cures in this state, and the hardening body 15 as shown in figure can be obtained. Therefore, the substrate or housing 11 and the vibration motor 12 can be firmly bonded and fixed.

  In particular, when the resin sheet 13 is made of a thermosetting resin, it is preferable that the elastic modulus at 25 ° C. after the resin sheet 13 is heat-cured is 1.0 GPa to 30.0 GPa. If the elastic modulus is less than 1.0 GPa, the strength tends to be insufficient, and if it exceeds 30.0 GPa, the rigidity of the resin sheet 13 increases, and peeling or the like tends to occur when receiving a thermal history.

  Examples of the thermosetting resin that satisfies the above-described requirements include (A) liquid bisphenol type epoxy resin, (B) a solid polyfunctional epoxy resin having a softening point of 70 ° C. or less, and (C) a curing agent for epoxy resin. , (D) Inorganic filler and (E) Flame retardant, (A) Mass ratio of liquid bisphenol type epoxy resin and (B) solid polyfunctional epoxy resin having a softening point of 70 ° C. or less (A) / (B ) Is 10/90 to 30/70, and (D) the content of the inorganic filler may be 10% by mass to 80% by mass of the thermosetting resin.

  The liquid bisphenol type epoxy resin used as the component (A) is not particularly limited as long as it is a liquid bisphenol type compound having two or more epoxy groups in one molecule. For example, bisphenol A type and bisphenol F A mold is preferred. Among these, liquid bisphenol A type epoxy resin is preferably used. Specific examples thereof include “DER383J” manufactured by Dow Chemical Company, “807” (epoxy equivalent 170) manufactured by Mitsubishi Chemical Corporation, and “R140P manufactured by Mitsui Chemicals, Inc. (Epoxy equivalent 188) or the like.

  In the present embodiment, the liquid bisphenol type epoxy resin refers to a bisphenol type epoxy resin that exhibits a liquid state at 25 ° C.

  Examples of the solid polyfunctional epoxy resin having a softening point of 70 ° C. or lower used as the component (B) include a mixture of biphenyl skeleton-containing aralkyl epoxy resin and a mixture of dicyclopentadiene epoxy resin. Examples of commercially available solid polyfunctional epoxy resins having a softening point of 70 ° C. or lower include “NC3000 (softening point 57 ° C.)”, “NC3000H (softening point 70 ° C.)” manufactured by Nippon Kayaku Co., Ltd. “YDCN704 (softening point 90 ° C.)” or the like is preferably used.

  In the thermosetting resin composition, the mass ratio (A) / (B) of (A) liquid bisphenol type epoxy resin and (B) solid polyfunctional epoxy resin having a softening point of 70 ° C. or less is 10/90. It must be in the range of ~ 30/70. If the liquid epoxy resin is less than the above range or the softening point of the solid epoxy resin exceeds 70 ° C., cracking or chipping occurs when the resin sheet 13 is produced from the thermosetting resin composition. .

  Moreover, when there are more liquid epoxy resins than the said range, or the softening point of a solid epoxy resin is too low, it will become difficult to manufacture the resin sheet 13 from the said thermosetting resin composition.

  In order to achieve the above-described effects more significantly, the mass ratio (A) / (B) is more preferably in the range of 15/85 to 25/75, and the solid epoxy resin The lower limit of the softening point is usually preferably about 40 ° C.

  There is no restriction | limiting in particular as a hardening | curing agent for epoxy resins used as (C) component, From what is conventionally used as a hardening | curing agent of an epoxy resin, arbitrary things can be selected suitably and used, for example, an amine. Type, phenol type, acid anhydride type and the like. Preferred examples of the amine curing agent include dicyandiamide and aromatic diamines such as m-phenylenediamine.

  In addition, the said thermosetting resin composition can be made to contain the hardening accelerator for epoxy resins as needed. There is no restriction | limiting in particular as this hardening accelerator for epoxy resins, From the things conventionally used as a hardening accelerator of an epoxy resin, arbitrary things can be selected suitably and can be used. For example, ureas such as aromatic dimethylurea and aliphatic dimethylurea can be exemplified.

  (D) There is no restriction | limiting in particular as an inorganic filler used as a component, For example, silicas, such as fused silica and spherical silica; A thing normally used, such as an alumina, can also be used, and also water which has a flame-retardant effect Aluminum oxide and magnesium hydroxide can also be used. As the aluminum hydroxide compound, for example, “H42M” manufactured by Showa Denko KK can be preferably used.

  The mass average particle diameter of the inorganic filler is preferably in the range of 1 to 30 μm from the viewpoint of workability during production and filling efficiency. The mass average particle diameter is a value measured by a laser diffraction scattering method (for example, manufactured by Shimadzu Corporation, apparatus name: SALD-3100).

  As the inorganic filler, an aluminum hydroxide compound or spherical silica is preferable. For example, the former is preferably “H42M” manufactured by Showa Denko KK, and the latter is, for example, “FB-959 manufactured by Denki Kagaku Kogyo. (Mass average particle diameter: 25 μm) ”is preferable.

  Content of an inorganic filler needs to be 10-80 mass% with respect to the whole quantity of the said thermosetting resin composition. When the content is less than 10% by mass, the fluidity of the molten resin is increased when the resin sheet 13 is manufactured from the thermosetting resin composition, and the cured product 15 is likely to be warped or twisted. On the other hand, if it exceeds 80% by mass, the resin sheet 13 is cracked or chipped, and further, the fluidity at the time of melting is lowered, and problems such as a decrease in adhesiveness of the resin sheet 13 tend to occur.

  When manufacturing the resin sheet 13 from the said thermosetting resin composition, it carries out as follows, for example. That is, the components constituting the thermosetting resin composition are sufficiently kneaded at a kneading temperature of about 50 to 110 ° C. with a kneader, a two-roller, a continuous kneader, or the like, and then the thermosetting resin composition obtained is obtained. Then, the resin sheet 13 is manufactured by pressing with a molding machine under conditions of a temperature of about 50 to 100 ° C. and a pressure of 0.5 to 1.5 MPa.

  In addition, when the resin sheet 13 is manufactured from the thermosetting resin composition described above, the thickness of the resin sheet 13 is, for example, 0.1 mm to 2.0 mm, preferably 0.2 mm to 1. 0 mm.

  Moreover, when manufacturing the resin sheet 13 from the thermosetting resin composition mentioned above and heat-curing this and manufacturing the hardened | cured material 15, for example, it is 120 minutes at the temperature of 100 degreeC, or 10 minutes at the temperature of 140 degreeC etc. This can be done by adopting the following conditions.

  In addition, the board | substrate or housing | casing 11 and the vibration motor 12 can be firmly adhere | attached and fixed by using the thermosetting resin composition mentioned above.

  4-6 is process drawing for demonstrating the modification of the connection method of a vibration motor of embodiment regarding FIGS. 1-3. 4 and 6 are front views for explaining a connection method of the vibration motor, and FIG. 5 is a side view regarding the connection method of the vibration motor shown in FIG.

  In the present modification, instead of the vibration motor 12 having the power feeding portion 123 or the like, the motor terminal 120 has a connection terminal 125 at the lower portion thereof, and is electrically connected to the power feeding portion 111 formed on the surface of the substrate or the casing 11. As shown in FIGS. 4 and 5, the motor main body 120 is a resin cut into a predetermined length as in the above-described embodiment. While being covered with the sheet 13, the end of the resin sheet 13 is fixed in contact with the substrate or the housing 11. That is, the substrate or housing 11 and the motor main body 120, that is, the vibration motor 12 are fixed by the resin sheet 13 arranged so as to be in contact with each other, thereby constituting the vibration generating device 10.

  The contact fixing of the resin sheet 13 to the substrate or the housing 11 can be performed through a predetermined adhesive, or the contact portion of the resin sheet 13 with the substrate or the housing 11 is partially melted and fixed. You can do this as well.

  Therefore, also in this modification, a vibration motor can be fixed to a board | substrate or a housing | casing simply and cheaply without requiring a complicated process. Since the resin sheet 13 is thin and the resin sheet 13 only needs to contact a part of the substrate or the casing 11 and a part of the motor main body 120, the amount of the resin sheet 13 used to fix the vibration motor 12 is sufficient. Can be reduced. Therefore, the vibration generator 10 obtained by the fixing method described above can be thinned.

  Also in this modification, the resin sheet 13 can be a thermosetting resin sheet. In this case, as shown in FIG. 6, since the cured body 15 can be obtained by heat curing the resin sheet 13, the substrate or the casing 11 and the vibration motor 12 can be firmly bonded and fixed.

  Further, when the resin sheet 13 is composed of a thermosetting resin, it is preferable that the elastic modulus at 25 ° C. after the heat curing of the resin sheet 13 is 1.0 GPa to 30.0 GPa. The conditions are the same as in the above embodiment.

  7 to 9 are process diagrams for explaining another modified example of the vibration motor connecting method of the embodiment shown in FIGS. 7 and 9 are front views for explaining a connection method of the vibration motor, and FIG. 8 is a side view regarding the connection method of the vibration motor shown in FIG.

  In this modification, the vibration motor 12 is different from the above embodiment in that the vibration motor 12 is a coin-type motor whose radial dimension is larger than the longitudinal dimension. A simple connection method is the same as that of the embodiment.

  As shown in FIGS. 7 and 8, a power feeding portion 123 is provided on the upper surface of the motor main body 120 of the vibration motor 12, and the power feeding portion 123 and the pad 111 of the substrate 11 are electrically connected by a lead wire 124. .

  As shown in FIGS. 7 and 8, the vibration motor 12 is fixed by the resin sheet 13 while the resin sheet 13 cut into a predetermined length is contacted and fixed to the upper surface end of the motor body 120. 13 end portions are fixed to the substrate or the housing 11 in contact. That is, the substrate or housing 11 and the motor main body 120, that is, the vibration motor 12 are fixed by the resin sheet 13 arranged so as to be in contact with each other, thereby constituting the vibration generating device 10.

 The resin sheet 13 can be fixed to the upper surface of the motor body 120 and the substrate or the housing 11 through a predetermined adhesive, or the resin sheet 13 can be partially dissolved and fixed. It can also be done.

  Therefore, also in this modification, a vibration motor can be fixed to a board | substrate or a housing | casing simply and cheaply without requiring a complicated process. Since the resin sheet 13 is thin and the resin sheet 13 only needs to contact a part of the substrate or the casing 11 and a part of the motor main body 120, the amount of the resin sheet 13 used to fix the vibration motor 12 is sufficient. Can be reduced. Therefore, the vibration generator 10 obtained by the fixing method described above can be thinned.

  Also in this modification, the resin sheet 13 can be a thermosetting resin sheet. In this case, as shown in FIG. 9, since the cured body 15 can be obtained by heat curing the resin sheet 13, the substrate or the casing 11 and the vibration motor 12 can be firmly bonded and fixed.

  Further, when the resin sheet 13 is composed of a thermosetting resin, it is preferable that the elastic modulus at 25 ° C. after the heat curing of the resin sheet 13 is 1.0 GPa to 30.0 GPa. The conditions are the same as in the above embodiment.

  FIGS. 10-12 is process drawing for demonstrating the other modification of the connection method of a vibration motor of embodiment regarding FIGS. 1-3. 10 and 12 are front views for explaining a connection method of the vibration motor, and FIG. 11 is a side view relating to the connection method of the vibration motor shown in FIG.

  In this modification, the vibration motor 12 is a coin-type motor having a radial dimension larger than a longitudinal dimension, and has a connection terminal 125 at the bottom of the motor body 120, As shown in FIGS. 10 and 11, the vibration motor 12 is fixed by the resin sheet 13 in that the power supply unit 111 is electrically connected to the power supply unit 111 formed on the surface of the housing 11. It is the same as that of the modified example regarding.

  Therefore, also in this modification, a vibration motor can be fixed to a board | substrate or a housing | casing simply and cheaply without requiring a complicated process. Since the resin sheet 13 is thin and the resin sheet 13 only needs to contact a part of the substrate or the casing 11 and a part of the motor main body 120, the amount of the resin sheet 13 used to fix the vibration motor 12 is sufficient. Can be reduced. Therefore, the vibration generator 10 obtained by the fixing method described above can be thinned.

  Also in this modification, the resin sheet 13 can be a thermosetting resin sheet. In this case, as shown in FIG. 12, since the cured body 15 can be obtained by heat curing the resin sheet 13, the substrate or the casing 11 and the vibration motor 12 can be firmly bonded and fixed.

  Further, when the resin sheet 13 is composed of a thermosetting resin, it is preferable that the elastic modulus at 25 ° C. after the heat curing of the resin sheet 13 is 1.0 GPa to 30.0 GPa. The conditions are the same as in the above embodiment.

(Second Embodiment)
13 to 15 are process diagrams for explaining a connection method of the vibration motor in the present embodiment. 13 and 15 are front views for explaining a vibration motor connection method, and FIG. 14 is a side view of the vibration motor connection method shown in FIG. 13. Note that the same reference numerals are used for the same or similar components as those in the first embodiment.

 First, as shown in FIGS. 13 and 14, a substrate or casing 11 and a vibration motor 12 are prepared. As in the first embodiment, the substrate or casing 11 is a metal plate whose surface is coated with glass, ceramic, resin (BT, PET, etc.), glass epoxy (FR-4, FR-5), or metal oxide, for example. Or the like. In addition, when the code | symbol 11 shows a housing | casing, in this embodiment, it shows the one surface part of a housing | casing.

  Similarly to the first embodiment, the vibration motor 12 uses a cylinder type motor (diameter: 4.0 mm, longitudinal length: 11.1 mm) whose longitudinal dimension is larger than the radial dimension. The output shaft 121 protrudes from one end portion of the motor main body 120, and an eccentric weight 122 is attached to the tip portion thereof. The eccentric weight 122 is made of a material having a large specific gravity such as tungsten. By rotating the weight 122, the eccentric weight 122 is configured to apply vibration to the entire apparatus through the substrate 11 or the housing to which the vibration motor 12 is attached. ing.

  In addition, a power feeding unit 123 for supplying a current to the motor main body 120 is provided on the side of the motor main body 120 opposite to the output shaft 121, and leads 124 to the substrate 111 or the pad 111 of the housing 11. It is electrically connected via.

  As shown in FIGS. 13 and 14, a resin sheet 13 is laminated on a substrate or housing 11, and the vibration motor 12 is disposed on the resin sheet 13. The resin sheet 13 can be a thermosetting resin sheet or a thermoplastic resin sheet. As the thermosetting resin sheet, epoxy resin, acrylic resin, urethane resin, melamine resin, phenol resin, or the like can be used. As the thermoplastic resin sheet, polyethylene resin, polypropylene resin, polyester resin, polyamide resin, polysilicone resin, or the like can be used.

  Next, as shown in FIG. 15, by curing the resin sheet 13 by heating, the vibration motor 12 is embedded in the melted resin sheet 13 by its own weight at the time of melting before curing, and the vibration motor 12 The periphery rises to hold the periphery of the vibration motor 12 on a wide surface, and thereafter, the resin sheet 13 is bonded and fixed by the cured product 15.

  According to the present embodiment, the substrate or casing 11 and the motor main body 120, that is, the vibration motor 12 are arranged so as to be in contact with the resin sheet 13 arranged therebetween, and the resin sheet 13 is heated and cured. The vibration generating device 10 is configured. The resin sheet 13 is thinner than an elastic body such as rubber, and in the present embodiment, since the resin sheet 13 is heat-cured, a part of the vibration motor 12 is embedded in the molten resin sheet 13. It has become.

  Therefore, compared with the case where the vibration motor is fixed through an elastic body arranged in the casing where the vibration motor is arranged, and the case where the vibration motor is fixed with a metal holder, a complicated process is not required. In addition, the vibration motor can be fixed to the substrate or the housing easily and inexpensively.

  Further, the resin sheet 13 is thinner than the elastic body, and as described above, the resin sheet 13 only needs to form the substrate or the casing 11 and the motor main body 120 with respect to the contact portion. The amount of the resin sheet 13 used for fixing can be reduced. Therefore, the vibration generator 10 obtained by the fixing method described above can be thinned.

  Also in this embodiment, the resin sheet 13 can be a thermosetting resin sheet. In this case, as in the first embodiment, it is preferable that the elastic modulus at 25 ° C. after the heat curing of the resin sheet 13 is 1.0 GPa to 30.0 GPa.

  In addition, as the thermosetting resin having the above-described characteristics, as in the first embodiment, for example, (A) a liquid bisphenol type epoxy resin, and (B) a solid polyfunctional epoxy resin having a softening point of 70 ° C. or less. (C) a curing agent for epoxy resin, (D) an inorganic filler, and (E) a flame retardant, (A) a liquid bisphenol-type epoxy resin, and (B) a solid polyfunctional epoxy resin having a softening point of 70 ° C. or less, The thermosetting resin has a mass ratio (A) / (B) of 10/90 to 30/70, and (D) the content of the inorganic filler is 10% to 80% by mass of the whole. Can do.

  In addition, since the characteristic requested | required of the said thermosetting resin composition is the same as that of 1st Embodiment, it abbreviate | omits description.

  FIG.16 and FIG.17 is process drawing for demonstrating the modification of the connection method of a vibration motor of embodiment regarding FIGS. 13-15. 16 and 17 are front views for explaining a connection method of the vibration motor.

  In this modification, the vibration motor 12 is different from the above embodiment in that the vibration motor 12 is a coin-type motor whose radial dimension is larger than the longitudinal dimension. A simple connection method is the same as that of the embodiment.

  As shown in FIGS. 16 and 17, a power feeding portion 123 is provided on the upper surface of the motor main body 120 of the vibration motor 12, and the power feeding portion 123 and the pad 111 of the substrate 11 are electrically connected by a lead wire 124. .

  As shown in FIG. 16 and FIG. 17, the vibration motor 12 is fixed by the resin sheet 13 by laminating the resin sheet 13 on the substrate or the casing 11 and arranging the vibration motor 12 on the resin sheet 13. Next, by curing the resin sheet 13 by heating, the vibration motor 12 is embedded in the resin sheet 13 partially melted by its own weight at the time of melting before curing, and then the cured product of the resin sheet 13. 15 to be bonded and fixed.

  Therefore, also in this modification, a vibration motor can be fixed to a board | substrate or a housing | casing simply and cheaply without requiring a complicated process. Since the resin sheet 13 is thin and the resin sheet 13 only needs to contact the substrate or housing 11 and the motor main body 120, the amount of the resin sheet 13 used to fix the vibration motor 12 can be reduced. . Therefore, the vibration generator 10 obtained by the fixing method described above can be thinned.

  Other preferred conditions are the same as in the above embodiment.

  The present invention has been described in detail based on the above specific examples. However, the present invention is not limited to the above specific examples, and various modifications and changes can be made without departing from the scope of the present invention. For example, a resin sheet is used in the above specific example, but a plate-shaped resin material may be used.

DESCRIPTION OF SYMBOLS 10 Vibration generator 11 Board | substrate 12 Vibration motor 13 Resin sheet 15 Hardened | cured material

Claims (6)

A method of fixing a vibration motor to a substrate or a housing,
A sheet-like thermoplastic or thermosetting resin material is disposed so as to be in contact with the substrate or the housing and the vibration motor, and the substrate or the housing and the vibration motor are fixed with the resin material. A method for fixing a vibration motor.   The resin material is a thermosetting resin, the vibration motor is covered with the resin material, cured by heat softening or heat melting, and the substrate or the casing and the vibration motor are bonded and fixed. The vibration motor fixing method according to claim 1.   The resin material is placed on the vibration motor mounting surface of the substrate or the housing, and after mounting the vibration motor on the resin material, the resin sheet is heated and cured by heat softening or heat melting, and then the substrate. The method for fixing a vibration motor according to claim 2, wherein the housing and the vibration motor are bonded and fixed.   The method for fixing a vibration motor according to claim 2, wherein the resin sheet has an elastic modulus at 25 ° C. after heat curing of 1.0 GPa to 30.0 GPa. The resin sheet is (A) liquid bisphenol type epoxy resin, (B) a solid polyfunctional epoxy resin having a softening point of 70 ° C. or less, (C) a curing agent for epoxy resin, (D) inorganic filler, and (E) difficult It consists of a thermosetting resin composition containing a flame retardant,
(A) Mass ratio (A) / (B) of liquid bisphenol type epoxy resin and (B) solid polyfunctional epoxy resin having a softening point of 70 ° C. or lower is 10/90 to 30/70, (D) The method for fixing a vibration motor according to any one of claims 2 to 4, wherein the content of the inorganic filler is 10% by mass to 80% by mass of the thermosetting resin composition.   6. A vibration generator, wherein the vibration motor is fixed to the substrate or the housing by the method according to claim 1.

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