Patent Translate Powered by EPO and Google Notice This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate, complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or financial decisions, should not be based on machine-translation output. DESCRIPTION JP2004363900 An object of the present invention is to prevent vibration generated in a speaker at the time of sound reproduction from being transmitted to a speaker cable fixing surface. A speaker device includes a speaker body, a cable of an input signal, and a cable connection portion for connecting the cable to the speaker body, the cable connection portion being a vibration that absorbs the vibration of the speaker body. It has an absorption part. Normally, when an audio signal is reproduced by the speaker, the vibration of the speaker body is transmitted to the cable connection portion between the cable and the speaker body, which is transmitted to the cable. By providing the vibration absorbing portion at the portion connecting the cable and the speaker body, it is possible to prevent the vibration of the speaker body from being transmitted to the cable and further from transmitting to the object fixing the cable. For example, in the case of an in-vehicle speaker, the cable is fixed to a door inner panel of a vehicle, etc. However, the vibration of the speaker body is not transmitted to the door inner panel by providing the vibration absorbing portion, so the door inner panel vibrates. It is possible to prevent the generation of abnormal noise. [Selected figure] Figure 4 Speaker device TECHNICAL FIELD [0001] The present invention relates to a speaker device. [0002] A vehiclemounted speaker is referred to as an inner panel (hereinafter referred to as a "door inner panel") inside a door of a driver's seat, a front passenger seat or left and right rear seats. It is attached to be embedded in etc.). Then, in order to supply an audio signal and power from the audio amplifier side to the speaker, the speaker cable drawn from the audio amplifier side is fixed to the door inner panel surface via a fixing member such as a hook, and the cable is mounted on the vehicle It is designed to lead to the vicinity of the speaker body. [0003] A speaker cable may be a speaker dedicated cable or a speaker cable branched from a bundle of cables (referred to as a 01-05-2019 1 wire harness) having a plurality of uses, and both of the speaker cables A male or female connector is provided at the tip. Then, by connecting the connector to a connector provided in the speaker frame, supply of signals and power to the vehicle-mounted speaker is performed. The on-vehicle speaker vibrates the diaphragm to emit sound waves into the vehicle when the signal and power are supplied from the audio amplifier side. [0004] As a known technique related to a speaker, a device in which a conductive portion of a conductive damper is prevented from shorting to a frame (see, for example, Patent Document 1), a terminal of a coil wire wound on a voice coil bobbin of a speaker To reduce the number of wiring steps for electrically connecting the coil wire and the speaker terminal at the time of assembling the speaker by making the U shape, a loop shape, etc. (see, for example, Patent Document 2) It is known that when attaching a magnetic circuit module to a vibration system module, an adhesive or the like is applied to the outer peripheral portion of a plate to prevent an abnormal sound from being generated from a speaker (see, for example, Patent Document 3). ing. Patent Document 1: JP-A-2002-78080 Patent Document 2: JP-A-2000-312397 Patent Document 3: JP-A-2001-333498 Problem to be Solved by the Invention When the sound is reproduced through the speaker, the diaphragm vibrates in the axial direction of the speaker, and the speaker frame also vibrates in the axial direction of the speaker by the reaction. At this time, the speaker frame also vibrates in the lateral direction orthogonal to the axial direction of the speaker. The vibration of the speaker frame is transmitted to the connector attached to the speaker frame, transmitted from the connector to the cable for the speaker, and further through the fixing member such as the hook for fixing the cable for the speaker to the door inner panel It is transmitted to. As a result, the cable mounting surface in the car, such as the door inner panel, vibrates, and there is a problem that a sound wave (abnormal sound) is radiated into the car. In particular, in the case where the cable attachment surface is an iron plate portion, such a sound wave is likely to cause noise because it is easily vibrated and the resonance frequency (Q) is also high. This sound wave contains many distortion components because it is emitted as a sound wave by vibrating the door inner panel etc. Also, since it is emitted into the car behind the sound wave emitted from the diaphragm in time, it vibrates. It is a deterioration from the sound quality radiated from the board. Also, in general, when the connector on the speaker frame side and the connector on the audio amplifier side are connected, the terminal fittings often do not have a structure in which the entire surface is completely in contact with each other. . Therefore, when the connector vibrates due to the vibration of the speaker frame, the contact portions of the terminal fittings can not be vibrated integrally, and are rubbed and worn, which may cause conduction failure and the like due to aging. . As problems to be solved by the present invention, the above-mentioned ones can be mentioned as an example. An object of the present invention is to prevent vibration generated in a speaker at the time of reproduction of sound from being transmitted to a speaker cable mounting surface in a car. [0010] The invention according to claim 1 comprises a speaker body, a cable for an input signal, and a cable connection portion for connecting the cable to the speaker body, the cable The connection unit includes a vibration 01-05-2019 2 absorbing unit that absorbs the vibration of the speaker body. In one aspect of the present invention, a speaker device comprises a speaker body, a cable for an input signal, and a cable connection portion for connecting the cable to the speaker body. The cable connection portion includes a vibration absorbing portion that absorbs the vibration of the speaker body. Usually, when an audio signal is reproduced by the speaker, the vibration of the speaker body is transmitted to the cable connection portion between the cable and the speaker body, which is transmitted to the cable. In the above speaker device, since the vibration absorbing portion is provided at the portion connecting the cable and the speaker main body, it is possible to prevent the vibration of the speaker main body from being transmitted to the cable and further transmitting it to the target fixing the cable. For example, in the case of an in-vehicle speaker, the cable is fixed to a door inner panel of a vehicle, etc. However, the vibration of the speaker body is not transmitted to the door inner panel by providing the vibration absorbing portion, so the door inner panel vibrates. It is possible to prevent the generation of abnormal noise. In one aspect of the above speaker device, the vibration absorbing portion may be a curved portion provided on the cable in the vicinity of the cable connection portion. In this aspect, the vibration of the speaker main body can be absorbed by providing the cable with, for example, a U-shaped shape or one or more winding shapes in the vicinity of the connection portion with the speaker main body. In another aspect of the above speaker device, the speaker device further includes a plurality of fixing members for fixing the cable to an object to which the speaker main body is attached, and the curved shape portion is connected to the cable among the plurality of fixing members. It is provided between the fixing member provided closest to the part and the cable connection part. According to this aspect, when the cable is fixed to the object by a fixing member such as a hook, for example, the vibration is absorbed at the portion closest to the speaker, so that the cable of the portion fixed to the object vibrates. It can prevent. [0015] In another aspect of the above speaker device, the cable connection portion may be fixed to the first connector member connected to the cable and the speaker main body, and may be connected to the first connector member. The vibration absorbing portion may be a vibration absorbing material disposed between the speaker body and the second connector member. According to this aspect, since the vibration absorbing material absorbs the vibration of the speaker body and does not transmit it to the cable, it is possible to prevent the vibration of the cable. Moreover, when connecting a cable to a speaker main body via a connector, since the vibration of a speaker main body is not transmitted also to a connector, abrasion etc. of the terminal metal fittings inside a connector can be prevented. The preferred embodiments of the present invention will be described below with reference to the drawings. According to the present invention, when sound is reproduced through a speaker attached to a door or the like of a vehicle, the vibration transmitted to the speaker cable from the speaker body is absorbed or cut off, and the mounting surface of the speaker cable to the vehicle The generation of the abnormal sound due to the vibration of the door inner panel of the vehicle (in this example) is prevented. First, the structure of the speaker device is shown in FIG. As shown in FIG. 1, the speaker device 10 is a magnetic 01-05-2019 3 circuit comprising a frame 2, a diaphragm 3, a damper 4, a voice coil bobbin 5 and a vibration system such as a voice coil 6, a pole piece 7, a plate 8 and a magnet 9 etc. A system and a connector 1 for receiving signal and / or power supply from an audio amplifier side not shown. In the following description, a connector in which a pair of connectors are connected is referred to as a "connector", and a male or female connector is referred to as a "connector member". Moreover, since each component of the speaker apparatus 10 is known, detailed description is abbreviate ¦ omitted. In the speaker device 10, when a voice current flows through the voice coil 6 in a uniform magnetic field, an electromagnetic force in the direction of arrow s1 is generated in the voice coil bobbin 5 by the principle of electromagnetic action, and the voice coil bobbin 5 is in the direction of the arrow s1. Vibrate. Then, the vibration is transmitted to the diaphragm 3, and the speaker device 10 emits a sound wave. At this time, in the speaker device 10, the vibration generated from the diaphragm 3 is transmitted to the frame 2, and the main body of the speaker device 10 exhibits vibration not only in the arrow s2 direction in the drawing but also in the arrow s3 direction. Here, the arrow s3 indicates the left and right direction toward the paper for convenience of the paper, but the arrow s3 is actually generated in the entire circumferential direction of the frame 2. FIG. 2 shows the speaker device 10 attached to the door 20 of the vehicle. Fig.2 (a) is a perspective view which shows the state which attached the speaker apparatus 10 to the door inner panel 20a. FIG.2 (b) is the side view seen from the arrow A direction of the door 20 shown to Fig.2 (a). 2 (b) shows a state in which the door lining 20b is attached to the door inner panel 20a for convenience of explanation, so the configuration of the door 20 in FIG. 2 (a) is slightly different. As shown in FIG. 2A, the speaker device 10 is attached to the door inner panel 20a via a plurality of attachment parts 10a. The speaker device 10 is attached to the door inner panel by, for example, a screw or an adhesive. In addition, a cable 22 drawn around an audio amplifier (not shown) through a predetermined path is attached to the door inner panel 20 a through a plurality of fixing members 21. The cable 22 is a dedicated speaker cable or a speaker cable branched from a wire harness. The fixing member 21 is, for example, a resin hook or the like that holds and fixes a cable. The tip of the cable 22 is connected to the male connector member 1a. The connector member 1a is inserted into the female connector member 1b provided on the frame 2 of the speaker device 10, and each terminal fitting is electrically connected. Thus, the audio amplifier and the speaker device 10 are electrically connected, and the sound can be reproduced through the speaker device 10. When sound is reproduced through the speaker device 10, as shown in FIG. 1, an audio current flows through the voice coil 6, the voice coil bobbin 5 vibrates in the direction of the arrow s1, and the diaphragm 3 vibrates. Further, the frame 2 vibrates due to the reaction of the vibration of the diaphragm 3, and the vibration of the frame 2 is transmitted from the connector members 1 a and 1 b to the cable 22 and the fixing member 21. And the vibration transmitted to the cable 22 and the fixing member 21 is further transmitted to the door inner panel 20a and the door 01-05-2019 4 lining 20b as shown in FIG. 2 (a) or (b). Next, FIG. 3 shows an experimental example of measuring the vibration transmitted to the central portion of the surface of the connector 1 → cable 22 → door inner panel 20a when a signal is input to the cable 22. The vertical axis indicates the magnitude of the vibration generated at the central portion of the surface of the door inner panel 20 a in acceleration (dB), and the horizontal axis indicates the frequency of the signal input to the cable 22. A waveform W1 indicates a vibration that occurs in the central portion of the door inner panel 20a when a signal is input. In the waveform W1, as the frequency increases, the vibration generated in the central portion of the surface of the door inner panel 20a also tends to increase. On the other hand, the waveform W2 indicates the magnitude of vibration that occurs naturally in the central portion of the surface of the door inner panel 20a when no signal is input to the cable 22. That is, the vibration corresponding to the difference between the waveforms W 1 and W 2 is a vibration generated by inputting a signal to the speaker device 10, that is, a vibration transmitted from the speaker device 10 to the door inner panel 20 a via the cable 22. It can be seen that it is. As described above, when the sound is reproduced through the speaker device 10, the vibration generated from the speaker device 10 is transmitted to the door inner panel 20a which is the attachment surface of the cable 22, and an abnormal sound is emitted in the car. In the present invention, the vibration of the speaker is prevented from being transmitted to the cable, and the generation of abnormal noise due to the vibration of the door inner panel is prevented by the following embodiments. First Embodiment In the first embodiment, the cable 22 is bent in the vicinity of the connector 1 of the speaker device 10 to absorb the vibration of the connector 1 and prevent it from being transmitted to the door inner panel 20 a. FIGS. 4 and 5 show an example of the cable 22 shaped to absorb the vibration from the connector 1. 4 (a) to 4 (d) show the first to fourth examples of the cable shape, FIGS. 5 (a) and 5 (b) show the fifth example, and FIGS. 5 (c) and 5 (d) show the fifth example. Six examples are shown. 5 (b) is a plan view from the upper side of FIG. 5 (a), and FIG. 5 (d) is a plan view from the upper side of FIG. 5 (c). In the first example shown in FIG. 4A, the portion in the vicinity of the connector 1 of the cable 22 is curved upward substantially with respect to the surface of the door inner panel 20a to have a substantially elliptical shape (broken line portion K1 reference). In the second example shown in FIG. 4B, the portion in the vicinity of the connector 1 of the cable 22 is curved above the surface of the door inner panel 20a so as to be substantially U-shaped (see the broken line portion K2). In the third example shown in FIG. 4C, the portion in the vicinity of the connector 1 of the cable 22 is wound once so as to be substantially circular above the surface of the door inner panel 20a (see the broken line portion K3). In the fourth example shown in FIG. 4D, the portion in the vicinity of the connector 1 of the cable 22 is wound multiple times so as to be spring-shaped above the surface of the door inner panel 20a (see the broken line portion K4). In the fifth example shown in FIGS. 5A and 5B, the portion of the cable 22 in the vicinity of the connector 1 is curved to be substantially circular in a plane substantially parallel to the surface of the door inner panel 20a. (See dashed line K5). In the sixth example shown in FIGS. 5C and 5D, the portion in the vicinity of the connector 1 of the cable 22 is curved in a substantially S shape 01-05-2019 5 in a plane substantially parallel to the surface of the door inner panel 20a (broken line K6 See). The curved portion exemplified above is provided in the vicinity of the connector 1. As shown in FIG. 2A, the cable 22 is fixed to the door inner panel 20a by a plurality of fixing members 21. However, as shown in FIG. 4 and FIG. It is provided between the fixing member 21 close to the connector 1 and the connector 1. Thus, the vibration of the cable 22 (in the audio amplifier direction) ahead of the fixing member 21 is suppressed. As described above, in the first embodiment, the shape of the cable 22 in the vicinity of the connector 1 is a curved shape etc., and the vibration applied to the connector 1 from the frame 2 is absorbed at that portion and not transmitted to the cable 22 Let's do it. As a result, the vibration of the speaker body is transmitted to the door inner panel 20a through the cable 22, and it is possible to prevent an abnormal sound from being generated. The shape of the cable 22 shown in FIGS. 4 and 5 is merely an example, and any other shape may be adopted as long as it can absorb vibration. Moreover, you may combine two or more shapes of the cable 22 shown in FIG.4 and FIG.5. The cable 22 shown in FIGS. 4 and 5 is formed so as not to lose its shape. Second Embodiment In the second embodiment, by interposing a vibration absorbing member for absorbing vibration between the connector member on the speaker device side and the frame, the vibration of the frame is not transmitted to the connector. It is characterized in that The present embodiment will be described with reference to FIG. 6 and FIG. The external shape of the vibration absorbing member 30 is shown in FIG. 6 as a perspective view. As the vibration absorbing member 30, a vibration absorbing material such as anti-vibration rubber or an elastomer is suitable. As shown in FIG. 6, the vibration absorbing member 30 has a substantially T-like shape, and the surface portion 30c and the back surface portion 30b are flat. Further, a protruding portion 30d is formed to protrude from a portion of the surface portion 30c of the vibration absorbing member 30, and a rectangular through hole 30a is formed in the protruding portion 30d. The shape of the vibration absorbing member 30 shown in FIG. 6 is merely an example, and the shape of the vibration absorbing member 30 is determined according to the shapes of the connector and the frame. FIG. 7 shows an enlarged view of the vicinity of the connector member 31 in the speaker device 50 of the present embodiment. The connector member 31 is a connector member on the speaker main body side of the speaker device 50, and is connected to the connector member on the speaker cable side. As shown in FIG. 7A, an overhanging piece 2a for attaching the connector member 31 and the vibration absorbing member 30 is formed on the frame 2 so as to extend downward. As shown in FIGS. 7A and 7B, the overhanging piece 2a is formed with a protrusion 2aa so as to protrude from the vicinity of the surface center. As shown in FIG. 7B, the protrusion 2aa serves to fix the vibration absorbing member 30 and the connector member 31 respectively. Further, on both sides of the overhanging pieces 2a, tinsel cords 2b extend from the frame 2 as shown in FIG. 7 (a). The tip of each tinsel wire 2b is fixed to each conductive attachment portion 2c attached to the frame 2 by a method such as soldering. Next, a method of attaching the vibration absorbing member 30 and the connector member 31 will be described with reference to FIGS. 7 and 7B. First, the vibration absorbing member 30 is attached to the overhanging piece 01-05-2019 6 2 a of the frame 2, and then the connector member 31 is attached to the overhanging piece 2 a of the frame 2. Thus, the vibration absorbing member 30 is interposed between the overhanging piece 2 a of the frame 2 and the connector member 31. Specifically, first, the protrusion 2aa formed on the overhanging piece 2a is inserted into the through hole 30a formed on the vibration absorbing member 30, and the flat surface portion 2ab of the overhanging piece 2a and the vibration absorbing member 30 is brought into close contact with the back surface 30b. At this time, the inner side surface of the through hole 30a of the vibration absorbing member 30 is in close contact with the surface of the protrusion 2aa formed on the overhanging piece 2a. Next, the protruding portion 2 aa of the overhanging piece 2 a is inserted into the through hole 31 b formed in the connector member 31 so that the surface portion 30 c of the vibration absorbing member 30 and the back surface portion 31 c of the connector member 31 are in close contact. Each conductive attachment portion 2c is electrically connected to the male terminal fitting 31a of the connector member 31 so that a signal and / or power can be supplied to the speaker device 50 from the audio amplifier side (not shown). As described above, in the speaker device 50 according to the present embodiment, the vibration absorbing member 30 for absorbing vibration is interposed between the overhanging piece 2 a of the frame 2 and the connector member 31, so the following effects can be obtained. Play. That is, when the diaphragm 3 vibrates during reproduction of sound by the speaker device 50, vibration occurs in the direction of arrows s8 to s10 shown in FIGS. 7A and 7B in the frame 2 of the speaker device 50. Do. However, since such vibration is absorbed by the vibration absorbing member 30, the vibration can be prevented from being transmitted to the connector member 31. Therefore, even if the connector member 31 and the connector member (not shown) on the audio amplifier side are connected, the vibration is not transmitted to the cable 22 extending from the connector member on the audio amplifier side. Therefore, the vibration which the speaker apparatus 50 generate ¦ occur ¦ produces can be transmitted to the door inner panel 20a, and it can prevent generating abnormal noise. In the present embodiment, since the vibration is absorbed by the vibration absorbing member 30, the connector member 31 hardly vibrates. Therefore, the contact portion between the terminal fitting of the connector member on the audio amplifier side and the terminal fitting of the connector member 31 on the speaker device 50 hardly rubs. Therefore, when the speaker device 50 is used for a long period of time, it is possible to prevent the contact portion of the terminal fitting from being abraded to cause conduction failure of the connector. [Modification] In the first embodiment, the cable 22 in the vicinity of the speaker device 10 has a curved shape, and in the second embodiment, between the frame 2 of the speaker device 50 and the connector member 31 By interposing the vibration absorbing member 30, the vibration of the speaker is prevented from being transmitted to the door inner panel 20a. Furthermore, the first embodiment and the second embodiment may be combined. That is, the 01-05-2019 7 vibration absorbing member may be provided between the frame of the speaker and the connector member, and the cable may have a curved shape in the vicinity of the speaker. In the above embodiment, the case where the speaker devices 10 and 50 are attached to the door inner panel 20 a on the driver's seat side is taken up, but the door inner panel 20 a on the passenger seat side or the left and right rear seat side and other speakers Of course, the application of the present invention is possible as long as the device 10, 50 is installed. Further, the present invention can be applied not only to in-vehicle speaker devices, but also to various types of speaker devices such as wall-mounted speaker devices that require fixing of a cable to an object to which the speaker device is attached. . BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing an entire configuration of a speaker device according to the present invention. FIG. 2 is a perspective view and a side view showing a state in which the speaker device of the present invention is attached to a door inner panel of a vehicle. FIG. 3 shows an example of measurement of vibration generated at a central portion of a door inner panel surface. FIG. 4 shows an example of the shape of the cable according to the first embodiment. FIG. 5 shows another example of the cable shape according to the first embodiment. FIG. 6 is a perspective view of a vibration absorbing member used in the speaker device according to the second embodiment. FIG. 7 shows a configuration of a speaker device according to a second embodiment. Explanation of the code 1 connector 2 frame 3 diaphragm 4 damper 5 voice coil bobbin 6 voice coil 7 pole piece 8 plate 9 magnet 10, 50 speaker device 20 door 21 fixed member 22 cable 30 vibration absorbing member 01-05-2019 8
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