JP4141978B2 - Speaker device - Google Patents

Description

The present invention relates to a speaker device.

  Conventionally, a so-called screen speaker system has been proposed in which sound is emitted from a screen that is a video screen by driving the screen itself on which the video is projected with an electric signal (see, for example, Patent Document 1 and Patent Document 2). ).

Japanese Patent Application No. 2002-27588 (abstract) No. 7-13344 (Summary, etc.)

  The above-described conventional screen speaker has a configuration in which a thick screen portion is driven by a voice coil, a magnetic circuit, or the like, so that it is difficult to obtain a sound pressure in a necessary reproduction frequency band. Another problem is that when the screen is upright, the driving body including the voice coil is tilted by its own weight and contacts the magnetic circuit within the magnetic gap.

  In order to solve such a problem, the applicant previously fixed an arbitrary portion (screen outer portion) of the screen back surface 1b to the casing 2 constituting the screen speaker system as shown in FIG. Is provided with a suspension function, and the suspension is connected to the housing 2 via the screen 1 and the housing 2 or the inclusions for holding the screen 1 and the suspension. Has proposed a direct drive type screen speaker system equipped with a magnetic circuit 4 for driving the motor.

  Here, the structure of the direct drive type screen speaker system previously proposed by the present applicant will be described.

  As shown in FIG. 20, the screen 1 is obtained by chemically treating the surface of an aluminum plate having a thickness of 1 mm to give a predetermined roughness, and after applying alumite treatment, a clear paint (acrylic paint) is electrodeposited. It is a thing. The voice coil 3 for driving the screen 1 is a coil having a DC resistance of about 6.8Ω ± 0.3Ω. The voice coil 3 is a coil bobbin made by curling an aluminum plate having a thickness of 0.1 mm, and has a diameter of 0.21 mm (insulating) at the lower end of the bobbin having an inner diameter of 30.4 mm and a height (width) of 12 mm. A copper clad aluminum wire having a maximum diameter of 0.248 mm including layers is arranged and wound so that the winding width is about 6.2 mm and the total number of windings is 94 to form four layers. Further, as shown in FIG. 21, a flange (hereinafter referred to as “flange”) 7 to which the input terminal 8 is attached is attached to the distal end portion of the coil bobbin 31.

  The flange 7 is made of a fiber-reinforced phenol resin, and has a main purpose of bonding the voice coil 3 to the screen back surface 1b and bonding an input terminal 8 for supplying a voice signal to the voice coil 3. The flange 7 has a ring shape with a thickness of 3 mm, an outer diameter of 63 mm, and an inner diameter of 30.8 mm. As shown in FIG. 21, the flange 7 has a diameter of 52.7 mm (distributed by 180 degrees) for mounting the input terminal 8. Two holes are provided. Among these holes, one (plus side) is a square hole with a side of 3 mm, and the other (minus side) is a square hole with a side of 2.5 mm.

  These lug mounting square holes are provided with a counterbore part having a diameter of 8 mm and a depth of 1.5 mm on the concentric side of the square hole on one side, and the face provided with the counterbore part is a screen. 1 is the mounting surface. The terminal lug is generally used and is called a faston terminal. As shown in FIG. 21, a plus terminal lug is attached to the 3 mm square hole side, and a minus terminal lug is attached to the 2.5 mm square hole side. The mounting is performed by caulking the flange 7 by pushing the caulking portion of the terminal lug into a cross shape by caulking with a general press.

  Next, the voice coil 3 and the flange 7 are connected to each other. The flange 7 needs to be connected to the outer periphery of the coil bobbin 31 vertically. Therefore, at the time of assembly, as shown in FIG. 22, the connecting work is performed using the jig J1, and the required vertical accuracy is obtained. The inner diameter portion of the connecting portion between the flange 7 and the voice coil 3 is chamfered to about C1 mm. Since this portion serves as a reservoir for the adhesive applied to the tip portion of the coil bobbin 31, a predetermined adhesive strength is exhibited.

  22 to 25, after the voice coil 3 is bonded to the flange 7, the lead wire 32 of the voice coil 3 is connected to the input terminal 8 as shown in FIG. When the voice coil 3 is mounted, the positive and negative terminals provided on the flange 7 and the lead wire 32 of the voice coil 3 are aligned, and the winding start side of the voice coil 3 is on the positive side and the winding is finished. Make sure the side is on the minus side. Then, the lead wire 32 of the voice coil 3 is soldered to the input terminal 8, and the portion of the lead wire 32 that is placed on the flange 7 is covered with an adhesive bo.

  Next, the voice coil 3 to which the flange 7 is coupled is extracted from the assembly jig J1 and bonded to the screen back surface 1b. At this time, the voice coil 3 is mounted at a predetermined position on the screen 1 using a jig (hereinafter referred to as “voice coil bonding jig”) J2 shown in FIG. As shown in the sectional view of FIG. 27, the voice coil connecting jig J2 has a central pole portion provided on the lower surface side of the disk as the voice coil 3 insertion portion. The outer peripheral portion of the disc is processed with a predetermined accuracy so as to maintain the concentricity with the central pole portion.

  After applying a predetermined amount of two-component mixed acrylic adhesive on a predetermined position on the screen 1 mounting surface side of the flange 7 in the voice coil 3 with the flange 7, the voice coil 3 of the voice coil bonding jig J2 is applied. Install in the insertion section. Further, the voice coil bonding jig J2 is inserted into the housing 4H for mounting the magnetic circuit 4 mounted on the back plate 22 of the circuit housing 2.

  A housing 4H for mounting the magnetic circuit 4 is generally concave and has a cross-sectional shape as shown in FIG. The bottom portion shown in the figure is provided with a hole having a diameter of 85.02 mm, and the diameter of this hole is a guide portion for positioning (hereinafter referred to as “guide hole”). A portion having a diameter of 85 mm of the voice coil bonding jig J2 on which the voice coil 3 with the flange 7 is installed is inserted into the guide hole as shown in FIG. Further, when the jig is inserted until the outermost peripheral portion of the jig is caught in the guide hole, the flange 7 of the voice coil 3 with the flange 7 comes into close contact with the screen rear surface 1b side.

  Next, after confirming that the desired adhesive state has been achieved, the adhesive bo is cured and allowed to stand for a predetermined time to reach the required strength. After confirming the curing of the adhesive bo, the voice coil bonding jig J2 Is extracted, the voice coil 3 and the flange 7 are bonded to a predetermined position on the screen rear surface 1b side. That is, it is mounted perpendicular to the screen back surface 1b and concentrically with the guide hole of the housing 4H for mounting the magnetic circuit 4.

  The coil mounting structure as described above is an extremely effective structure as a structure in which the driving voice coil 3 is mounted on the flat screen rear surface 1b. That is, the voice coil 3, which is a driving body for driving the screen 1, is provided with a flange 7 on the outer peripheral portion or inner peripheral portion of the tip end portion of the coil bobbin 31, and the flange 7 is attached and fixed to the screen rear surface 1b by means such as adhesion. This is because the mounting area of the voice coil 3 is greatly increased.

  If there is no flange 7, only the tip of the coil bobbin 31 must be attached to the screen back surface 1b. As described above, because the coil bobbin 31 is a curled aluminum plate having a thickness of 0.1 mm, the bonding area is extremely reduced, and even if it can be bonded, the bonding strength is extremely low. Furthermore, since it is extremely difficult to apply the adhesive bo to the tip of the coil bobbin 31, it is difficult to bond the voice coil 3 to the screen back surface 1b.

  Therefore, the flange 7 has an advantage of greatly increasing the adhesive strength when the coil bobbin 31, that is, the voice coil 3 is bonded to the screen back surface 1b. In addition, since the tip of the coil bobbin 31 directly touches the screen back surface 1b by the flange 7, the sound from the voice coil 3 is efficiently transmitted to the screen 1 and the heat generated by the voice coil 3 is dissipated by the screen 1. Is possible.

  In other words, a large input is applied to the voice coil 3, and a peeling force is applied to the coil bobbin 31, and even if the voice coil 3 generates heat, the flange 7 is bonded over a wide area, so that it can counter the peeling force. it can. Moreover, since the heat generated in the voice coil 3 is radiated from the screen 1 via the coil bobbin 31, it is possible to prevent the performance deterioration of the adhesive bo due to heat. Furthermore, since sound is directly transmitted to the screen 1, good sound quality can be realized.

  By the way, in the screen speaker system proposed above, when the voice coil 3 is disconnected for some reason, it is necessary to replace the voice coil 3 for repair. In order to replace the voice coil 3, it is necessary to remove the adhesive bo. However, the two-component mixed type acrylic adhesive exhibits an extremely strong adhesive force after being cured, and thus is not easily peeled off. Therefore, it is desirable to make the exchange of the voice coil 3 easier.

The present invention has been made based on the above circumstances, and an object of the present invention is to provide a speaker device in which a voice coil can be easily replaced.

In order to achieve the above-described object, a speaker device according to the present invention is a speaker device that emits sound by vibrating a plate-like member, and a voice coil that drives the plate-like member, a coil bobbin around which the voice coil is wound, A flange that is provided on the outer peripheral portion or the inner peripheral portion of the coil bobbin and is bonded to the plate-like member by an adhesive member, and the flange is provided with a screw hole penetrating in the thickness direction of the flange. The opening surface of the screw hole on the plate-like member side is in contact with the layer of the adhesive member.

The speaker device of the present invention is a speaker device that emits sound by vibrating a plate-like member, a voice coil that drives the plate-like member, a coil bobbin around which the voice coil is wound, and an outer peripheral portion of the coil bobbin or A flange provided on the inner periphery, and a spacer disposed between the plate-like member and the flange, and the plate-like member and the flange and the front and back surfaces are respectively bonded by an adhesive member. A screw hole penetrating in the thickness direction of the flange is provided, and the opening surface on the spacer side of the screw hole is in contact with the layer of the adhesive member.

  In addition to the above-described inventions, a speaker device according to another invention is provided with a plurality of screw holes at a predetermined interval from each other.

  In the speaker device according to another invention, in addition to the above-described inventions, the plate member serves as a screen together with the diaphragm, and an image is projected onto the plate member.

  In addition to the above-described inventions, a speaker device of another invention has a thin film member attached to the opening of the screw hole of the flange to prevent the adhesive member from entering.

  According to the present invention, the speaker device can be easily replaced with a voice coil.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the part corresponding to a prior art example. In the case of the present embodiment, the material, outer dimensions, and the like are the same as in the conventional example.

  FIG. 1 is a diagram illustrating a configuration example of the flange 7 of the speaker device according to the embodiment of the present invention. As shown in this figure, the flange 7 has six screw holes 41 to 46 formed at intervals of a central angle of 60 degrees on a circumference having a predetermined radius from the center. Further, as shown in a cross-sectional view (FIG. 1C) cut along A-0-A ′ in FIG. 1B, the screw holes 41 to 46 penetrate from the upper surface to the back surface of the flange 7.

  Next, a procedure for assembling a speaker device using such a flange 7 will be described. First, the input terminal 8 is attached to the flange 7 in which the screw holes 41 to 46 are formed, as in the conventional example. Next, as shown in FIG. 2, the flange 7 and the tip end portion of the coil bobbin 31 are bonded using the voice coil bonding jig J1. Next, the lead wire of the voice coil 3 and the input terminal lug are connected to create the voice coil 3 with the flange 7.

  When the voice coil 3 with the flange 7 is completed by mounting the flange 7 and the tip end portion of the coil bobbin 31 and connecting the voice coil lead wire and the terminal lug using the voice coil connecting jig J1 as described above, FIG. ), Screws 51 to 56, commonly referred to as M3-5, are mounted in the screw holes 41 to 46 provided in the flange 7, respectively. In addition, at this time, as shown in FIG. 4, each front-end | tip part of the screws 51-56 is adjusted to the back surface (adhesion surface) of the flange 7, and a state without a level | step difference.

  Next, as shown in FIG. 3, after the voice coil 3 is bonded to the flange 7, the lead wire of the voice coil 3 is connected to the input terminal 8. When the voice coil 3 is mounted, the positive and negative terminals provided on the flange 7 and the lead wire of the voice coil 3 are aligned, and the winding start side of the voice coil 3 is on the plus side and the winding end side is on the winding side. Try to come to the minus side. Next, the lead wire of the voice coil 3 is soldered to the input terminal 8. Further, as shown in FIG. 4, the portion of the lead wire that is placed on the flange 7 is covered with an adhesive bo.

  Next, the voice coil 3 with the flange 7 is removed from the assembly jig J1, and as shown in FIG. 5, a two-component mixed acrylic adhesive bo is applied to the back surface of the flange 7 in a ring shape. Adhere to the back surface 1b of the screen. At this time, it is mounted at a predetermined position of the screen 1 using a jig (hereinafter referred to as “voice coil bonding jig”) J2 shown in FIG. As shown in FIG. 7, in the voice coil connecting jig J2, the central pole portion provided on the lower surface side of the disk is the voice coil 3 insertion portion. The outer peripheral portion of the disc is processed with a predetermined accuracy so as to maintain the concentricity with the central pole portion.

  At the time of bonding, the voice coil 3 is installed at the insertion portion of the voice coil 3 of the voice coil bonding jig J2, and the magnetic circuit 4 mounted on the back plate 22 of the circuit housing 2 together with the voice coil bonding jig J2. Insert into housing 4H.

  The housing 4H for mounting the magnetic circuit 4 is generally concave and has a cross-sectional shape shown in FIG. A hole 100 having a diameter of 85.02 mm is provided at the bottom of the housing 4H, and this hole 100 serves as a guide portion for positioning (hereinafter referred to as “guide hole”). Therefore, the portion of the diameter smaller than 85 mm in the voice coil bonding jig J2 provided with the voice coil 3 with the flange 7 is inserted into the guide hole as shown in FIG. The outer periphery is inserted until it is caught in this guide hole. In this state, the flange 7 portion of the voice coil 3 with the flange 7 is in close contact with the screen rear surface 1b side.

  Next, after confirming that the desired adhesive state has been achieved, the adhesive bo is cured and left for a predetermined time to reach the required strength. After confirming the curing of the adhesive bo, as shown in FIG. 8, when the voice coil bonding jig J2 is removed, the voice coil 3 and the flange 7 are bonded to a predetermined position on the screen rear surface 1b side. That is, the voice coil 3 and the flange 7 are mounted perpendicular to the screen back surface 1b and coaxial with the guide hole of the housing 4H for mounting the magnetic circuit 4.

  Subsequently, when the flange 7 is bonded to the back surface 1b of the screen, as shown in FIG. 9, the screws 51 to 56 attached to the screw holes 41 to 46 of the flange 7 are removed, and the input terminal 8 and the input lead wire are removed. And the driving magnetic circuit 4 is mounted as shown in FIG. Through the above steps, a direct drive type screen speaker is completed as shown in FIG.

  Next, an exchange method in the case where it becomes necessary to exchange the voice coil 3 due to some trouble after completion will be described.

  When the magnetic circuit 4 for driving rotation is removed from the housing 4H, it appears in a state where the flange 7 is bonded to the back surface 1b of the screen as shown in FIG. Next, after removing the connection wiring between the input terminal 8 and the input lead wire, as shown in FIGS. 11 and 12, M3 screws 51 to 56 are inserted into all the screw holes 41 to 46 of the flange 7. Wear each one. The length of the screws 51 to 56 is not particularly limited as long as it is equal to or greater than the thickness of the flange 7. In the present embodiment, a screw having a length of 12 mm is used.

  FIG. 13 is an enlarged cross-sectional view showing a state of an adhesive surface between the screen back surface 1 b and the flange 7. As shown in this figure, an extremely thin layer of the adhesive bo exists between the screen back surface 1b and the adhesive surface of the flange 7. As described above, since the assembly is performed with the screws 51 to 56 attached, the screw holes 41 to 46 are not completely filled with the adhesive bo. This state is referred to as a state in which the openings of the screw holes 41 to 46 are in contact with the layer of the adhesive bo. That is, as shown in FIG. 13, the tips 51 a to 56 a of the screws 51 to 56 are in direct contact with the bottom ends (adhesive layer portions) of the screw holes 41 to 46.

  Next, for each of the screws 51 to 56, the screw heads 51b to 56b are rotated until the screw tip portions 51a to 56a come into contact with the adhesive layer made of the adhesive bo on the screen back surface 1b. When the screw tip 50 comes into contact with the adhesive layer, the rotational resistance increases. Therefore, it is possible to easily sense that the screws 51 to 56 are in contact with the adhesive layer. In the case of the present embodiment, in all six screw holes 41 to 46, the screw tip portions 50 of the six screws 51 to 56 are the screen back surface 1b (strictly, the adhesive layer that is the bottom end portion of the screw hole). ).

  When the screw tip portions 50 of all the screws 51 to 56 are in contact with the screen back surface 1b, the screw heads Nb2 of the respective screws are rotated little by little in order. For example, if each screw is rotated by 1/6 turn in the order of 51, 52, 53, 54, 55, 56, a strong peeling force is generated between the adhesive surface (back surface) of the flange 7 and the screen back surface 1b. To do. That is, the whole flange 7 is jacked up from the screen rear surface 1b by the screws 51 to 56. In this operation, it is not desirable to greatly rotate only a specific screw. For example, if one of the six screws, for example, only 51 is rotated twice, a load is applied only to the screw 51, resulting in deformation of the contact portion between the screw tip 50 and the screen 1. Because.

  Therefore, it is important to rotate the screws 51 to 56 gradually (by 1/8 to 1/6 rotation) and sequentially to apply a uniform load to the bonding surface of the flange 7. When such a screwing operation is repeated, a cracking sound is generated when one of the screws is turned, and a crack k as shown in FIG. 14 is generated in a part of the adhesive layer. Arise. Furthermore, if the same operation is continued, the peeling is expanded from the crack k, and the flange 7 is completely detached from the screen rear surface 1b. The coil bobbin 31 and the voice coil 3 are also peeled off from the screen rear surface 1b while being mounted on the flange 7.

  According to the experiment, when the screws 51 to 56 are rotated about one and a half to two times, the flange 7 is completely peeled off from the screen back surface 1b, and the flange 7 is easily detached from the screen back surface 1b as shown in FIG. Can be separated. Further, as a result of visual inspection, the screen 1 was not deformed, and the initial flatness was not impaired.

  In addition, the part which peeled also has a part in which the hardened | cured adhesive agent bo remains as a thin layer. Therefore, it is necessary to remove the adhesive layer, but if the surface of the layer is covered with a cloth soaked with a solvent (for example, acetone), the adhesive layer swells and the adhesive strength decreases. It can be removed more easily than 1b.

  Note that, without using a solvent, for example, the adhesive layer can be easily mechanically scraped off by, for example, a cutter. When the removal of the adhesive layer is completed, there is no problem in mounting the voice coil 3, so that the voice coil 3 with a new part (normal flange 7) can be mounted on the screen back surface 1b.

  Further, in the present embodiment, as described above, the screws 51 to 56 are attached to the screw holes 41 to 46 of the flange 7 with the adhesive, but the adhesive bo is used. The purpose is to prevent the screw holes 41 to 46 from entering. That is, if the adhesive bo enters the screw holes 41 to 46, the screws 51 to 56 cannot be inserted, and the above-described peeling by jackup cannot be performed.

  As a method for preventing the adhesive bo from entering the screw holes 41 to 46, as shown in FIG. 16, the screw holes 41 to 46 of the flange 7 are each formed of a thin film tape (for example, a thickness coated with adhesive on one side). Resin film tapes 61 to 66 as thin film members having a thickness of about 20 μm are cut into a shape larger than each of the screw holes 41 to 46 (for example, a square having a side of 6 to 8 mm). ˜46 may be covered. Even by such a method, the adhesive bo can be prevented from entering the screw holes 41 to 46.

  Further, as described above, according to the experiment, when the thickness of the screen 1 is 1 mm, even when the flange 7 is peeled off from the screen 1 by gradually tightening the screws 51 to 56 and jacking up. The screen 1 is not deformed by stress.

  However, when the thickness of the screen 1 is thinner than 1 mm (for example, when the thickness is 0.5 mm or less), the mechanical strength of the screen 1 itself is reduced. When the operation of peeling the flange 7 using 56 is performed, the screen 1 may be deformed by stress. In such a case, as shown in FIGS. 17 and 18, a spacer 70 having a ring shape is interposed between the flange 7 and the screen 1, so that the jack can be raised at the time of removal. Can prevent the screen 1 from being deformed.

  As described above, according to the embodiment of the present invention, by providing the screw holes 41 to 46 at desired locations of the flange 7, the voice coil 3 can be easily and quickly made without deforming the screen 1. It becomes possible to exchange. That is, according to the present invention, it is possible to replace the voice coil 3 without damaging the product, which has been impossible in the past. Therefore, even if the voice coil 3 is cut for some reason after the speaker device reaches the user's hand, only the voice coil 3 that is the faulty part can be easily replaced. Compared with the case where the operation is performed, it is possible to reduce the cost required for the transportation. In addition, by telling the market that the voice coil 3 can be replaced, it is possible to dispel the user's anxiety and, in turn, improve the market value of the product.

  Moreover, in the above embodiment, compared with the conventional case, there is no increase in the number of parts and the structure itself is hardly changed. Therefore, the voice coil 3 can be replaced without significantly changing the quality and cost of the product.

  In addition, as shown in FIG. 19, the method of fixing the flange 7 to the screen 1 with screws instead of bonding with an adhesive is also conceivable. However, in this method, the mass on the driven side increases, so that the acoustic characteristics change. Further, due to variations in screw fastening, the flange 7 may not sufficiently adhere to the screen back surface 1b, and when the screen 1 vibrates, the flange 7 may generate an abnormal sound such as a so-called “billing noise”. is there. In the embodiment of the present invention, occurrence of such a problem can be prevented.

  Each embodiment described above is a preferred example of the present invention, but the present invention is not limited to these, and various modifications and changes can be made without departing from the scope of the present invention. It is.

  For example, in the embodiment of the present invention, six screw holes 41 to 46 are provided. However, for example, other numbers (5 or less, or 7 or more) may be used. In order to prevent deformation of the screen 1 during jack-up, it is desirable that the number of screw holes is large.

  In the embodiment of the present invention, the flange is provided on the outer peripheral portion of the coil bobbin, but it can also be provided on the inner peripheral portion. Even in such a case, the present invention can be applied.

  In the above embodiment, the description has been given by taking the speaker device having the screen 1 on which an image is projected as an example. However, for example, the present invention is applied to a speaker device having a simple plate-like member on which an image is not projected as a diaphragm. It goes without saying that the invention can be applied.

  Further, although M3 screws are used as the screws 51 to 56 when jacking up, other types of screws can be used. However, from the viewpoint of dispersing the pressure and preventing the deformation of the screen 1, a screw having a certain diameter is desirable.

  The present invention can be used for a speaker device having a screen on which an image is projected.

It is a figure which shows the structural example of the flange of the speaker apparatus which concerns on embodiment of this invention, (A) is a perspective view of a flange, (B) is a top view of a flange, (C) is a cross section of a flange. FIG. It is a figure which shows the assembly state of the flange and voice coil of the speaker apparatus which concern on embodiment of this invention, (A) is a perspective view which shows the state before an assembly, (B) shows the state after an assembly. It is a perspective view. It is a perspective view of the drive body of the speaker apparatus which concerns on embodiment of this invention. It is a fragmentary sectional view of the speaker apparatus shown in FIG. It is a perspective view of the drive body of the speaker apparatus which concerns on embodiment of this invention. It is a perspective view which shows the state which attaches a drive body to the magnetic circuit attachment housing of the speaker apparatus which concerns on embodiment of this invention. It is a figure which shows the state which attaches a drive body to the magnetic circuit attachment housing of the speaker apparatus based on embodiment of this invention, (A) is a figure which shows the state before an assembly, (B) is the state after an assembly. FIG. It is a perspective view which shows the state which attaches a drive body to the magnetic circuit attachment housing of the speaker apparatus which concerns on embodiment of this invention. It is a perspective view which shows the state which attaches a drive body to the magnetic circuit attachment housing of the speaker apparatus which concerns on embodiment of this invention. It is a figure which shows the state which attaches a drive body to the magnetic circuit attachment housing of the speaker apparatus based on embodiment of this invention, (A) is a figure which shows the state before an assembly, (B) is the state after an assembly. FIG. It is a perspective view which shows the state which removes a drive body from the magnetic circuit attachment housing of the speaker apparatus which concerns on embodiment of this invention. It is a figure which shows the state which removes a drive body from the magnetic circuit attachment housing of the speaker apparatus which concerns on embodiment of this invention, (A) is sectional drawing which shows the state before attaching a screw to a drive body, (B) Is a top view of the flange, (C) is a cross-sectional view showing a state after the screw is attached to the drive body. It is a fragmentary sectional view of the speaker apparatus shown in FIG. 12 before tightening a screw. It is a fragmentary sectional view of the speaker apparatus shown in FIG. 12 after tightening a screw. It is a perspective view which shows the state which removes a drive body from the magnetic circuit attachment housing of the speaker apparatus which concerns on embodiment of this invention. It is a perspective view which shows an example of the method for preventing an adhesive agent approaching into the screw hole of the flange of the speaker apparatus which concerns on embodiment of this invention. It is sectional drawing which shows an example of the method of preventing a screen from deform | transforming with the pressure applied with a screw | thread, when the screen of the speaker apparatus which concerns on embodiment of this invention is thin. It is a fragmentary sectional view of the speaker apparatus shown in FIG. It is sectional drawing which shows the example in the case of fixing a flange to a screen with a screw | thread. It is sectional drawing which shows the cross-section of the conventional speaker apparatus. It is a perspective view which shows the structural example of the flange of the conventional speaker apparatus. It is a perspective view which shows the assembly state of the flange and voice coil of the conventional speaker apparatus. It is a perspective view of the drive body of the conventional speaker apparatus. It is a fragmentary sectional view of the speaker apparatus shown in FIG. It is a perspective view of the drive body of the conventional speaker apparatus. It is a perspective view which shows the state which attaches a drive body to the magnetic circuit attachment housing of the conventional speaker apparatus. It is a perspective view which shows the state which attaches a drive body to the magnetic circuit attachment housing of the conventional speaker apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Screen 1b Screen back surface 3 Voice coil 7 Flange 31 Coil bobbin 41-46 Screw hole 61-56 Screw 60 Resin film tape (thin film-like member)
70 spacer

Claims (5)

In a speaker device that emits sound by vibrating a plate-like member,
A voice coil for driving the plate member;
A coil bobbin around which the voice coil is wound;
A flange that is provided on an outer peripheral portion or an inner peripheral portion of the coil bobbin and is bonded to the plate member by an adhesive member;
The flange is provided with a screw hole penetrating in the thickness direction of the flange, and the opening surface of the screw hole on the plate-like member side is in contact with the layer of the adhesive member. Speaker device. In a speaker device that emits sound by vibrating a plate-like member,
A voice coil for driving the plate member;
A coil bobbin around which the voice coil is wound;
A flange provided on the outer periphery or inner periphery of the coil bobbin;
A spacer disposed between the plate-like member and the flange, and having the plate-like member and the flange and the front and back surfaces bonded to each other by an adhesive member;
The speaker is characterized in that the flange is provided with a screw hole penetrating in the thickness direction of the flange, and the opening surface on the spacer side of the screw hole is in contact with the layer of the adhesive member. apparatus.   The speaker device according to claim 1, wherein a plurality of the screw holes are provided at a predetermined interval from each other.   The speaker device according to claim 1, wherein the plate member serves as a screen together with the vibration plate, and an image is projected onto the plate member.   The speaker device according to claim 1 or 2, wherein a thin film member for preventing an adhesive member from entering is attached to an opening of the screw hole of the flange.

Images