JP4245462B2 - Speaker device - Google Patents

Description

  The present invention relates to a speaker device, and more particularly to a fixing structure of a wire harness connected to a voice coil.

  In general, in a vehicle speaker device or the like, wiring for supplying an electrical signal to the speaker device (hereinafter referred to as a “wire harness”) is fixed to a frame portion of the speaker device (for example, a patent). References 1 to 3). This is because when the speaker device is mounted on a vehicle or the like, if the wire harness is not fixed to the frame, the wire harness repeatedly contacts the frame due to the vibration of the vehicle, and abnormal sound is generated in the output sound. . In addition, if the wire harness is not fixed, there is a problem that the wire harness bites when the speaker device is assembled to the vehicle.

  However, when the frame is made of iron, there is a limitation in the drawing process in the manufacture of the frame, and there has been a problem that the position on the frame for fixing the wire harness cannot be freely changed in design. In addition, there is a possibility that a wire harness covering may be broken and a wire break or short circuit may occur due to contact with a burr formed in a pressing process when producing an iron frame.

JP-A-10-276488 Japanese Patent Laid-Open No. 7-222282 Japanese Patent Laid-Open No. 8-132777

  Examples of problems to be solved by the present invention include the above. It is an object of the present invention to provide a speaker device capable of preventing the generation of abnormal noise caused by vibration of a wire harness or the like, disconnection or short circuit of the wire harness.

  The invention according to claim 1 is a speaker device, comprising: a wiring for supplying an electric signal; a frame; and a packing made of an insulator attached to the frame, wherein the wiring is provided on an outer peripheral wall of the packing. It is characterized in that a wiring fixing portion for fixing the wiring is provided.

  In a preferred embodiment of the present invention, the speaker device includes a wiring for supplying an electric signal, a frame, and a packing made of an insulator attached to the frame, and the wiring is provided on an outer peripheral wall of the packing. A wiring fixing portion for fixing the terminal is provided.

  Said speaker apparatus can be used, for example as a vehicle-mounted speaker apparatus, and is provided with wiring, a frame, and packing attached to the frame. The packing is made of an insulating material and may have a role as a buffer member when the speaker device is mounted on a vehicle, for example. A wiring fixing portion for fixing the wiring is provided on the outer peripheral wall of the packing. That is, the wiring is fixed to the packing that is an insulating material. Therefore, the degree of freedom in designing the position of the wiring fixing portion is increased as compared with the case where the wiring is fixed to the metal frame. In addition, disconnection of the wiring due to contact with the metal portion, short circuit, etc. can be prevented.

  In one aspect of the speaker device, the wiring fixing portion includes a hole for inserting a fixing member and a notch for fastening the fixing member. In this aspect, the fixing member can be used to fix the wiring to the packing. As the fixing member, for example, a resin fixing band, a lock band, a tape, or the like can be used. If the wiring is fixed by these fixing members, it is possible to prevent the wiring coating from being damaged and the internal conductors from being disconnected or short-circuited.

  In the other one aspect | mode of said speaker apparatus, the said wiring fixing | fixed part is a lock mechanism comprised from a pair of wall part which has a nail | claw part in an upper end and mutually opposes. In this aspect, since it is not necessary to use a fixing member such as a band, the wiring can be fixed at a low cost. In addition, the wiring can be detached from the wiring fixing portion.

  In another aspect of the speaker device, the packing is made of a resin material, and the wiring fixing portion is integrally formed with the packing. By integrally molding the wiring fixing part with the packing made of resin material, the number and position of the wiring fixing parts on the outer peripheral wall of the packing can be changed relatively easily, and the degree of freedom in designing the wiring routing position Will improve.

  In the other one aspect | mode of said speaker apparatus, the said flame | frame is equipped with the wiring fixing | fixed part which fixes the said wiring. In this aspect, since the wiring is fixed not only to the wiring fixing portion provided in the packing but also to the wiring fixing portion provided in the frame, when force is applied to the wiring, the force is applied only to the packing, It is possible to prevent the packing from being peeled off from the frame.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[Configuration of speaker device]
1 and 2 schematically show a schematic configuration of a speaker device 100 according to an embodiment of the present invention. In addition, the speaker apparatus 100 of a present Example can be used suitably as a vehicle-mounted speaker. FIG. 1A shows a plan view of the speaker device 100. FIG.1 (b) has shown sectional drawing along the cutting line AA 'of the speaker apparatus 1 in Fig.1 (a). FIG. 2A shows a rear view of the speaker device 100. FIG. 2B shows a side view of the speaker device 100 in FIG. Hereinafter, the configuration and the like of the speaker device 100 according to the present embodiment will be described with reference to FIGS.

  As shown in FIG. 1B, the speaker device 100 mainly includes a frame 8, a diaphragm 1, a damper 2, a voice coil bobbin 3 and a voice coil 4, a pot type yoke 5, a magnet 6, A magnetic circuit system 11 having a plate 7 and other various members are provided. The speaker device 100 is a speaker device of a type generally called double voice or dual voice, and can emit sound with a high volume output.

  First, each component of the vibration system 10 will be described.

  The diaphragm 1 is a so-called cone-shaped diaphragm, and is bonded to and joined to a separate edge portion 1a or integrally formed with the edge portion 1a. Various materials such as paper, polymer, and metal can be applied to the diaphragm 1 according to various applications. The outer peripheral edge portion of the diaphragm 1, that is, the lower end portion of the edge portion 1 a is fixed to the upper surface of the outer peripheral edge portion of the frame 8. Since various components of the speaker device 100 are fixed to the frame 8 and also serve to support the speaker device 100, it is preferable to use a strong metal material. On the other hand, the inner peripheral edge of the diaphragm 1 is fixed in the vicinity of the upper end of the outer peripheral wall of the voice coil bobbin 3.

  The damper 2 is made of, for example, a cloth material in which a plurality of corrugations are formed. In the speaker device 100 of this example, a plurality of dampers 2 are provided. As a result, the voice coil bobbin 3 having a large driving force can be movably supported. The inner peripheral edge of each damper 2 is fixed to the outer peripheral wall of the voice coil bobbin 3. On the other hand, the outer peripheral edge of each damper 2 is fixed to the inner surface of the frame 8.

  The voice coil bobbin 3 has an opening on the lower surface and has a substantially cylindrical shape. A voice coil 4 is wound around the outer wall of the lower end portion of the voice coil bobbin 3. The outer peripheral wall of the lower end portion of the voice coil bobbin 3 is opposed to the inner peripheral wall of the pot type yoke 5 having an opening on the upper surface with a certain distance. On the other hand, the inner peripheral wall of the voice coil bobbin 3 is opposed to the outer peripheral wall of the annular plate 7 and the outer peripheral wall of the annular magnet 6 having a size slightly smaller than the annular plate 7 with a certain distance therebetween. . As a result, a gap (magnetic gap 20) is formed between the outer peripheral wall of the plate 7 and the inner peripheral wall of the pot type yoke 5.

  The voice coil 4 is composed of two independent voice coils 4a and 4b (see FIG. 3). Two sets of electrical signals for one channel are input to the two voice coils from the amplifier side. For example, when the speaker device 100 is used for the L channel, the same L channel audio signal is input to the two voice coils 4a and 4b, respectively. The voice coil 4 has two sets of plus / minus lead terminals, and each lead terminal is electrically connected to the two sets of tinsel wires 9 at predetermined positions of the diaphragm 1. The positive lead terminal is an input terminal for an L channel signal, and the negative lead terminal is an input terminal for a ground (GND) signal.

  Next, each component of the magnetic circuit system 11 will be described.

  The magnetic circuit system 11 is configured as an internal magnet type magnetic circuit system. This magnetic circuit includes an annular magnet 6, an annular plate 7 disposed so as to overlap the upper portion of the magnet 6, and a pot type yoke 5 that accommodates them. In the magnetic circuit system 11, the magnet 6 and the plate 7 constitute a magnetic circuit, and the magnetic flux of the magnet 6 is concentrated in the magnetic gap 20 formed between the outer peripheral surface of the plate 7 and the inner peripheral surface of the pot type yoke 5. ing.

  Next, various components will be described.

  Various components include members such as a dust cap 12, a packing 13, a buffer member 14, and a wire harness 15.

  The dust cap 12 has a dome shape. The outer peripheral edge of the dust cap 12 is fixed in the vicinity of the inner peripheral edge of the diaphragm 1. For this reason, the dust-proof cap 12 functions to prevent foreign matters such as dust from entering the magnetic circuit system 11 and the like.

  The packing 13 has a ring shape and is an insulating member. As a material of the packing 13, for example, a material such as a resin is suitable. The lower surface of the packing 13 is fixed to the upper surface of the outer peripheral edge of the frame 8.

  The shock-absorbing member 14 has a function as a shock-absorbing material when the speaker device 100 is attached to a predetermined position of the vehicle, and also functions to prevent external vibration from being transmitted to the main body of the speaker device 100. It is a member. For this reason, as a material of the buffer member 14, for example, a member such as a sponge having cushioning properties is suitable. Further, the buffer member 14 has a rod shape, and an adhesive is applied to one side or a double-sided tape is attached. The buffer member 14 is attached to the upper surface of the packing 13 via its adhesive or double-sided tape in a state of being deformed in an annular shape.

  The wire harness 15 is a four-wire wiring, and outputs an electrical signal for one channel output from the amplifier to the voice coil 4 via each tinsel wire 9. One end of the wire harness 15 is connected to the connection terminal 16 by the solder 17, and the other end of the wire harness 15 is connected to the connector terminal 18. Thereby, the wire harness 15, the tinsel wire 9, and the voice coil 4 are electrically connected.

  Next, a method for supplying an electric signal to the speaker device 100 will be briefly described with reference to FIG. The electric signal is supplied to the speaker device 100 through the acoustic source 30, the amplifier 31, the amplifier 32, and the like. The sound source 30 corresponds to a CD (Compact Disc) player, an MD (Mini Disc) player, or the like. The acoustic source 30 outputs audio signals for one channel of the L channel (or R channel) to the amplifiers 31 and 32, respectively (signal S1). For example, when the speaker device 100 is used for the L channel, the amplifier 31 and the amplifier 32 amplify the output L channel audio signal with a predetermined amplification factor, and pass through each of the tinsel wires 9 and the like. , Output to each of the voice coils 4a and 4b. For this reason, the speaker device 100 can emit a high-volume output.

  In the speaker device 100 described above, when an electric signal is input from the amplifier side to the wire harness 15, the electric signal is transmitted to the voice coil 4 via the connection terminal 16, the tinsel wire 9, and the lead terminal of the voice coil 4. Supplied. As a result, a driving force is generated in the voice coil 4 in the magnetic gap 20, and the diaphragm 1 is vibrated in the axial direction of the speaker device 100. Thus, the speaker device 100 generates sound in the direction of the arrow 50 shown in FIGS. 1 (b) and 2 (b).

[How to fix the wire harness]
As described above, if the wire harness 15 is not fixed, the wire harness 15 may vibrate due to the vibration of the vehicle and the like, and may come into contact with the components of the speaker device 100, and abnormal sound may be generated. If the wire harness 15 is not fixed, the wire harness 15 may be bitten when the speaker device 100 is fixed to the vehicle. Therefore, it is necessary to fix the wire harness 15 to the speaker device 100. Below, the fixing method of the wire harness 15 which concerns on this invention is demonstrated.

(First embodiment)
First, a method for fixing the wire harness 15 according to the first embodiment of the present invention will be described. As described above, when the wire harness 15 is fixed only to the frame 8 made of metal, it is difficult to freely change the position on the frame 8 where the wire harness 15 is fixed due to limitations in the manufacturing process. Therefore, in the first embodiment of the present invention, the wire harness 15 is fixed to the packing 13. The details are shown in FIG.

  FIG. 4 is a plan view of the packing 13 (that is, only the packing 13 is extracted in FIG. 1A). As illustrated, wire harness fixing portions 13 a and 13 b are provided on the outer peripheral wall of the packing 13. That is, the wire harness 15 is fixed at two locations of the wire harness fixing portions 13a and 13b.

  A method of fixing the wire harness 15 to the wire harness fixing portions 13a and 13b will be described with reference to FIG. Fig.5 (a) is the top view which expanded and showed the state which fixed the wire harness 15 to the wire harness fixing | fixed part 13a. FIG. 5B is a cross-sectional view taken along the cutting line X-X ′ shown in FIG. 5A, and FIG. 5C is a side view seen from below in FIG. 5A.

  As shown in FIG. 5, the wire harness 15 is fixed to the wire harness fixing portion 13a using a fixing band 80 as an example of a fixing member. The wire harness fixing part 13a includes a hole 41 for inserting the fixing band 80 and a notch 42 formed at the outer peripheral end of the wire harness fixing part 13a for fastening the fixing band 80 as shown in the figure. When fixing the wire harness 15, the wire harness 15 is arranged at a position between the hole 41 and the notch 42 on the wire harness fixing portion 13 a, and the fixing band 80 is inserted into the hole 41 and wound around the wire harness 15. , Stay in the notch 42. Then, the fixing band 80 is tightened, and the wire harness 15 is fixed to the wire harness fixing portion 13 a together with the fixing band 80.

  In addition, as shown in FIG.5 (c), thickness L1 of the wire harness fixing | fixed part 13a of the part in which the hole 41 and the notch 42 were formed is compared with thickness L2 of the other part of the wire harness fixing | fixed part 13a. And formed thin. This is to make it easy to wind the fixing band 80 and to make it difficult for the wire harness 15 and the fixing band 80 to move laterally after the fixing band 80 is wound.

  Further, it is preferable to use a flexible and detachable fixing band 80. In this embodiment, a so-called lock band is shown as the fixing band 80 as the fixing member, but other than this, for example, a tape or the like may be used as the fixing member. When the fixing member 80 has a certain degree of flexibility, the position of the wire harness 15 fixed to the wire harness fixing portion 13a can be easily changed by slightly loosening the fixing band 80 and shifting it in the lateral direction. In addition, since the solid band 80 is flexible, an excessive load is not applied to the wire harness 15 and the cover covering the wire harness 15 is not damaged. Therefore, no disconnection or short circuit occurs in the lead wire in the wire harness 15.

  Next, a method for fixing the wire harness 15 to the wire harness fixing portion 13b will be described with reference to FIG. Fig.6 (a) is the top view which expanded and showed the state which fixed the wire harness 15 to the wire harness fixing | fixed part 13b. FIG. 6B is a cross-sectional view taken along the cutting line Y-Y ′ shown in FIG.

  The wire harness fixing part 13 b fixes the wire harness 15 with the groove 43 and the fixing band 80. The fixing method using the fixing band 80 is the same method as described above. As shown in FIG.6 (b), the wire harness 15 is arrange | positioned in the groove | channel 43 formed in the wire harness fixing | fixed part 13b. This prevents the position of the wire harness 15 from shifting laterally. Thus, in the wire harness fixing | fixed part 13b, since the wire harness 15 is arrange | positioned in the groove | channel 43 and it is fixing with the fixing band 80, the wire harness 15 can be fixed stably. Therefore, the wire harness fixing part 13b can be suitably used as a fixing part from the voice coil 4 of the speaker device 100 most. Further, the wire harness 15 is first inserted into the groove 43 (that is, temporarily fixed) before being fixed to the wire harness fixing portions 8a, 8b, 8c, 13a, and 13b. By doing so, when attaching the fixing band 80 of the wire harness fixing portions 13a and 13b to the wire frame 15, the work can be performed using both hands, so that workability is improved.

  As described above, in this embodiment, the wire harness 15 is fixed by the wire harness fixing portions 13 a and 13 b provided on the outer peripheral wall of the packing 13. Since the packing 13 is manufactured by injection molding of a resin material, the positions of the wire harness fixing portions 13a and 13b can be changed relatively easily by changing the molding die of the packing 13. Thereby, the freedom degree in design of the routing of the wire harness 15 can be increased. Moreover, since the wire harness 15 is fixed to the packing 13 which is an insulator with a fixing band 80 or the like, it is possible to prevent the covering of the wire harness 15 from being damaged and the internal conductors from being disconnected or short-circuited.

  In addition, the number of the wire harness fixing | fixed parts provided in the packing 13 and the position of the wire harness fixing | fixed part provided in the packing 13 are not limited to what was mentioned above. When the length of the wire harness 15 to be used is long or the diameter of the speaker device 100 is large, the number of wire harness fixing portions may be increased. Further, the shape of the wire harness fixing portion is not limited to the above.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. Also in 2nd Example, the wire harness 15 is fixed to the wire harness fixing | fixed part provided in the packing 13 similarly to 1st Example. However, the first embodiment differs from the fixing method using the wire harness fixing portion, the shape of the wire harness fixing portion, and the like.

  FIG. 7 shows a wire harness fixing portion 13c according to the second embodiment of the present invention. Fig.7 (a) is the top view which showed the state which fixed the wire harness 15 to the wire harness fixing | fixed part 13c. FIG. 7B is a cross-sectional view taken along the cutting line Z-Z ′ shown in FIG.

  As shown in FIG. 7B, the wire harness fixing portion 13 c is configured by a pair of opposing wall portions 44, and claw portions 44 a are formed inside each wall portion 44. Thereby, although the wire harness fixing | fixed part 13c can insert the wire harness 15 easily, it comprises the lock mechanism which cannot be removed easily once inserted. Further, the upward movement or the like of the wire harness 15 can be prevented by the claw portions 44a of the wall portions 44.

  Therefore, the wire harness fixing | fixed part 13c of 2nd Example can fix the wire harness 15 reliably, without using the fixed band 80 like 1st Example. Further, since no fixing member such as the fixing band 80 is used, the wire harness 15 can be fixed at a low cost.

  When the wire harness fixing portion 13c is provided at the position of the wire harness fixing portion 13b on the packing 13 shown in FIG. 4 (that is, the position closest to the voice coil 4 of the speaker device 100), the fixing band 80 is also included. It is suitable to use for.

[Third embodiment]
Next, a third embodiment of the present invention will be described. If the wire harness 15 is fixed only to the packing 13, the frame 8 and the packing 13 may be peeled off due to the spring property (for example, restoring property) of the wire harness 15. In particular, in the case of a 4-wire type wire harness or when one conductive wire constituting the wire harness 15 is relatively thick, the spring property of the wire harness 15 is strong. Therefore, when the wire harness 15 is fixed only to the packing 13, for example, when a force is applied to the wire harness 15 due to vehicle vibration or the like, a force is generated that the wire harness 15 pushes up the packing 13, and the packing 13 is peeled off from the frame 8. There is a possibility. Therefore, in the third embodiment of the present invention, the wire harness 15 is fixed not only to the packing 13 but also to the frame 8.

  Specifically, this will be described with reference to FIG. FIG. 8 shows a rear view of the speaker device 100. The wire harness fixing portions 8a, 8b, and 8c are provided at positions surrounded by broken lines on the frame 8. In the present embodiment, the wire harness 15 is fixed to these wire harness fixing portions 8a, 8b, 8c.

  As shown in FIG. 8, the wire harness fixing portion 8a also plays a role of combining the wire harness 15a and the wire harness 15b into one. Further, the wire harness fixing portion 8 b also has a role of guiding the wire harness 15 in the direction of the upper packing 13. Furthermore, the wire harness fixing part 8 c also has a role of smoothly transferring a portion for fixing the wire harness 15 from the frame 8 to the packing 13. Thus, in this embodiment, the wire harness 15 is fixed to the frame 8 by the wire harness fixing portions 8a, 8b, 8c provided in the frame 8, and therefore the packing is generated by the force generated by the spring property of the wire harness 15. 13 can be prevented from being peeled off from the frame 8. Further, the wire harness 15 is not bent more than necessary, and can be smoothly guided to the packing 13 and fixed.

  Next, a fixing method in the wire harness fixing portions 8a and 8b will be described with reference to FIG. Fig.9 (a) is a top view of the wire harness fixing | fixed part 8a, 8b to which the wire harness 15 was fixed. Moreover, FIG.9 (b) has shown the side view from the arrow C direction shown in Fig.9 (a).

  Since the frame 8 is made of metal, the wire harness fixing portions 8 a and 8 b are formed on a part of the iron plate constituting the frame 8. As shown in FIG.9 (b), the wire harness fixing | fixed part 8a, 8b pinches | interposes and fixes the wire harness 15 in a clip type. On the other hand, the wire harness fixing part 8c passes the fixing band 80 through the hole provided in the frame 8 as shown in FIG. 8, and fixes the wire harness 15 by the same method as shown in FIG.

It is a figure which shows the structure of the speaker apparatus based on the Example of this invention, Fig.1 (a) is a top view seen from right above, FIG.1 (b) is the cutting line A- of the speaker apparatus in Fig.1 (a). A cross-sectional view along A ′ is shown. It is a figure which shows the structure of the speaker apparatus based on the Example of this invention, Fig.2 (a) is a rear view, FIG.2 (b) is a side view from the arrow B direction of the speaker apparatus in Fig.1 (a). Indicates. It is a figure which shows the supply method of the electrical signal to a speaker apparatus. The top view of the packing which concerns on 1st Example of this invention is shown. It is a figure which shows the wire harness fixing | fixed part which concerns on 1st Example. It is a figure which shows the other wire harness fixing | fixed part which concerns on 1st Example. It is a figure which shows the wire harness fixing | fixed part which concerns on 2nd Example. It is a figure for demonstrating the position of the wire harness fixing | fixed part which concerns on 3rd Example. It is a figure which shows the wire harness fixing | fixed part which concerns on 3rd Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Diaphragm 4 Voice coil 5 Yoke 8 Frame 8a, 8b, 8c, 13a, 13b Wire harness fixing part 13 Packing 15, 15a, 15b Wire harness 80 Fixed band 100 Speaker apparatus

Claims (6)

Wiring for supplying electrical signals;
Frame,
A packing made of an insulator attached to the frame,
The speaker device, wherein a wiring fixing portion for fixing the wiring is provided on an outer peripheral wall of the packing. The speaker device according to claim 1, wherein the wiring fixing portion includes a hole for inserting a fixing member and a notch for fastening the fixing member. The speaker device according to claim 1, wherein the wiring fixing portion is a locking mechanism having a claw portion at an upper end and configured by a pair of wall portions facing each other. The speaker device according to claim 3, wherein the wiring fixing unit fixes the wiring so as to be detachable from the wiring fixing unit. The speaker device according to any one of claims 1 to 4, wherein the packing is made of a resin material, and the wiring fixing portion is integrally formed with the packing. The speaker device according to any one of claims 1 to 5, wherein the frame includes a wiring fixing portion that fixes the wiring.

Images