JP3845989B2 - Speaker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a speaker, and more particularly to a speaker that suppresses vibration transmission between a speaker unit and a speaker cabinet.
[0002]
[Prior art]
In a conventional speaker, a speaker unit is generally fixed to a speaker cabinet via a frame of the speaker unit, and this speaker cabinet is generally installed on a ground surface for use. However, when the speaker unit generates sound, the magnetic circuit unit composed of a magnet or the like that vibrates the diaphragm is in a suspended state in which only one side is supported by the frame, so that it receives the reaction of the coil connected to the diaphragm. The magnetic circuit part vibrates. This vibration is transmitted to the speaker cabinet through the frame, noise is generated from the speaker cabinet, and the sound quality of the speaker is deteriorated.
[0003]
In order to solve such problems, for example, in a speaker disclosed in Japanese Patent Application Laid-Open No. 7-30990, the speaker unit is sandwiched and pressed from the flange side and the magnetic circuit side and fixed to the front surface of the speaker cabinet. To prevent vibration.
[0004]
[Problems to be solved by the invention]
However, with the above method of fixing the speaker unit, the magnetic circuit cannot be completely fixed, vibration is transmitted to the speaker cabinet through the frame, and noise due to the vibration of the speaker cabinet is mixed in the reproduction signal, and the speaker There was a problem that the vibration of the cabinet itself became noise, which harmed the viewing environment.
[0005]
The vibration transmitted to the speaker cabinet is transmitted again to the speaker unit through the frame, generating unnecessary vibration in the entire speaker unit, and the transmitted vibration is further superimposed on the original vibration of the diaphragm. The sound quality of the speaker was further deteriorated.
[0006]
In addition, when high-fidelity playback is performed, such mechanical vibrations are also transmitted to other audio equipment such as audio playback devices and audio amplifiers, and are convoluted with the electrical signals of each equipment to produce playback sound. There was also the problem of deteriorating.
[0007]
An object of the present invention is to suppress vibration transmission between the speaker cabinet and the speaker unit, reduce noise generated from the speaker cabinet, improve the sound quality of the speaker, and realize reproduced sound closer to the original sound. It is providing the speaker which can be performed.
[0008]
[Means for Solving the Problems]
A speaker according to the present invention includes a speaker unit including a diaphragm, a frame that fixes an outer periphery of the diaphragm, and an electromechanical converter that converts an audio signal into mechanical vibration of the diaphragm. A speaker cabinet that covers the back surface and is spaced apart from the ground plane, and one end fixed to the electromechanical converter to support the speaker unit, and the other end is installed on the ground plane through the speaker cabinet. And a supporting member.
[0009]
With the above configuration, the electromechanical transducer of the speaker unit is directly supported by the support member installed on the ground plane, and the speaker cabinet is separated from the ground plane, so that the electromechanical transducer associated with the vibration of the diaphragm is unnecessary. Therefore, it is possible to prevent the vibration from being absorbed by the grounding surface by the support member and directly transmitted to the speaker cabinet. Furthermore, even if vibration is transmitted from the speaker unit to the speaker cabinet, the speaker unit is directly supported by the support member, so that vibration transmitted from the speaker cabinet to the speaker unit can be suppressed. Accordingly, vibration transmission between the speaker cabinet and the speaker unit can be suppressed, noise generated from the speaker cabinet can be reduced, sound quality of the speaker can be improved, and reproduced sound closer to the original sound can be realized. In this specification, the ground plane means a plane that serves as a mechanical ground. Setting the support member on the ground plane means that the support member is simply placed on the ground plane, and that the support member is the ground plane. It means both cases of fixing.
[0010]
The speaker cabinet is preferably supported by the support bar. In this case, a special support member for the speaker cabinet is not required, and the overall configuration is simplified.
[0011]
Moreover, it is preferable to further include a vibration isolating member for a support member that is disposed between the speaker cabinet and the support member and prevents vibration transmission between the speaker cabinet and the support member. In this case, the vibration of the speaker unit via the support member is attenuated by the vibration isolating member for the support member and transmitted to the speaker cabinet, so that the vibration of the speaker cabinet can be suppressed.
[0012]
Moreover, it is preferable that the said vibration isolator for support members prevents the outflow of the air from the inside of the said speaker cabinet. In this case, air does not leak from the speaker cabinet, and a reproduced sound closer to the original sound can be realized.
[0013]
Moreover, it is preferable that the said support member penetrates the said speaker box in the state spaced apart from the said speaker box. In this case, the vibration of the speaker unit is not transmitted to the speaker cabinet via the support member.
[0014]
Moreover, it is preferable to further include a cabinet support member that supports the speaker cabinet. In this case, since the speaker cabinet is supported by the cabinet support member separate from the support member, the speaker cabinet can be supported more firmly.
[0015]
Moreover, it is preferable that the said cabinet support member is installed in the grounding surface in the state spaced apart from the said support member. In this case, since the speaker cabinet is supported on the ground surface in a state of being separated from the support member, vibration transmitted from the support member to the speaker cabinet can be further suppressed.
[0016]
Moreover, it is preferable that the said supporting member supports the said speaker unit on the axis | shaft which passes the gravity center of the said speaker unit. In this case, the speaker unit can be supported more stably.
[0017]
Moreover, it is preferable that the said speaker unit is further provided with the adjustment member which adjusts the gravity center position of the said speaker unit so that the said support member may support the gravity center of the said speaker unit. In this case, the selection of the joining position between the support member and the electromechanical transducer is facilitated.
[0018]
The speaker cabinet is preferably supported by the support member via the speaker unit, and the support member supports the speaker unit on an axis passing through the center of gravity of the entire speaker excluding the support member. In this case, the entire speaker can be supported more stably.
[0019]
Moreover, it is preferable that the said speaker unit is further provided with the adjustment member which adjusts a gravity center position so that the said support member may support the gravity center of the whole speaker except the said support member. In this case, the selection of the joining position between the support member and the electromechanical transducer is facilitated.
[0020]
Moreover, it is preferable that the periphery of the said frame is contact | abutted or spaced apart from the periphery of the hole for speaker units provided in the said speaker cabinet. In this case, since the frame and the speaker cabinet are not joined, transmission of vibration from the frame to the speaker cabinet can be suppressed.
[0021]
The frame further includes a vibration isolating member that is disposed between a peripheral edge of the frame and a peripheral edge of a speaker unit hole provided in the speaker cabinet and prevents vibration transmission between the frame and the speaker cabinet. It is preferable. In this case, the vibration of the speaker unit is attenuated by the vibration isolating member for the frame and transmitted to the speaker cabinet, so that the vibration of the speaker cabinet can be suppressed.
[0022]
Moreover, it is preferable that the said vibration isolating member for frames prevents the outflow of air from the inside of the speaker cabinet. In this case, air does not leak from the speaker cabinet, and a reproduced sound closer to the original sound can be realized.
[0023]
The speaker cabinet is preferably made of at least one of polystyrene foam, balsa and paulownia. In this case, the speaker cabinet can be reduced in weight.
[0024]
Moreover, it is preferable that the part joined with the other member of the said speaker cabinet consists of a heavy material, and the part which is not joined with the other member of the said speaker cabinet consists of a lightweight material. In this case, the speaker cabinet can be reduced in weight while ensuring the strength of the joint.
[0025]
Moreover, it is preferable that the specific gravity of the said weight material is 0.5 or more, and the specific gravity of the said lightweight material is 0.3 or less.
[0026]
In addition, the weight material includes at least one of mahogany, rosewood (ebony), ebony, cocoon, firewood, cocoon, teak, pine, spruce, and the light weight material includes styrene foam, balsa, paulownia. It is preferable that at least one of them is included. In addition, the form of the weight material may be any of a laminated material such as a single board, a plywood, or a particle board made of each of the above materials.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a longitudinal side view schematically showing a configuration of a speaker according to a first embodiment of the present invention.
[0028]
As shown in FIG. 1, the speaker includes a speaker unit 1a, a speaker cabinet 2a, a support bar 3a, and a fixed base 4a. The speaker unit 1a includes a yoke 11a, a magnet 12a, a plate 13, a frame 14a, a diaphragm 15, a voice coil 16, an edge 17, and a damper 18. Here, a support member is constituted by the support bar 3a and the fixed base 4a, and an electromechanical transducer is constituted by the yoke 11a, the magnet 12a, the plate 13, and the voice coil 16. In addition, the structure of a supporting member is not specifically limited to said example, A various structure is employable. Further, the electromechanical transducer is not particularly limited to the configuration using the above-described magnetic circuit or the like, and another electromechanical transducer using a piezoelectric element or the like may be used.
[0029]
The magnet 12a is fixed to the yoke 11a, the plate 13 is fixed to the magnet 12a, and the yoke 11a, the magnet 12a, and the plate 13 form a magnetic circuit, and a magnetic field is formed between the yoke 11a and the plate 13. The vicinity of the voice coil 16 of the diaphragm 15 is connected to the frame 14a via a damper 18, and the outer periphery of the diaphragm 15 is connected to the outer periphery of the frame 14a via an edge 17, and the diaphragm 15 is supported by these support methods. Is supported so as to vibrate. When the voice coil 16 is disposed in the gap portion between the yoke 11a and the plate 13 and a current corresponding to the audio signal is passed through the voice coil 16, the voice coil 16 vibrates according to the current value due to the magnetic flux in the gap. The voice coil 16 is connected to the diaphragm 15, and the diaphragm 15 vibrates in response to the vibration of the voice coil 16, and a sound corresponding to the audio signal is reproduced.
[0030]
Of the speaker unit 1a, the yoke 11a of the electromechanical converter composed of the yoke 11a, the magnet 12a, the plate 13, and the voice coil 16 is joined to and supported by the support bar 3a. The support bar 3a is supported by the ground plane G. It is fixed to the fixing base 4a placed on the head. The support bar 3a is joined to the yoke 11a on the central axis passing through the center of gravity of the speaker unit 1a.
[0031]
As a method of joining the yoke 11a and the support bar 3a and joining the support bar 3a and the fixing base 4a, various methods such as welding, screw fixing, press-fitting, and adhesion can be used. The yoke 11a and the support bar 3a and There is no particular limitation as long as it is a method capable of firmly joining the fixing base 4a. The material of the support bar 3a and the fixing base 4a is not particularly limited as long as various materials such as metal, plastic, and wood can be used and the yoke 11a, that is, the electromechanical transducer can be firmly supported. The shapes of the support bar 3a and the fixing base 4a are not particularly limited, and various shapes can be adopted. The support bar 3a and the fixing base 4a are not particularly limited to separate members, and may be formed integrally, and may be formed integrally including the yoke 11a.
[0032]
The speaker cabinet 2a is joined to the support bar 3a and is separated from the ground plane G. The method for joining the speaker cabinet 2a and the support bar 3a is not particularly limited as long as various methods such as press fitting and adhesion can be used, and the position of the speaker cabinet 2a with respect to the support bar 3a can be regulated. The outer periphery of the speaker unit hole provided in the speaker cabinet 2a and the outer periphery of the frame 14a are only in contact with each other, and are not joined by bonding or screwing. That is, the outer peripheral portion of the frame 14a does not have a joining force enough to hold the speaker cabinet 2a, and the speaker cabinet 2a is held by the support bar 3a. As a material of the speaker cabinet 2a, various materials generally used for the speaker cabinet can be used, and it is not particularly limited. However, in order to reduce the weight of the speaker cabinet, polystyrene foam, balsa, paulownia, or a combination thereof. May be used.
[0033]
With the above configuration, the yoke 11a of the speaker unit 1a is not directly supported by the front surface of the speaker cabinet 2a via the frame 14a, but is directly supported by the support bar 3a, and the speaker cabinet 2a is separated from the ground plane G. Has been. Therefore, unnecessary vibrations of the electromechanical converter due to the vibration of the diaphragm 15 are suppressed, and the electromechanical transducer is absorbed by the ground plane G through the support bar 3a and the fixing base 4a, and directly into the speaker cabinet 2a through the frame 14a. It is possible to suppress transmission. Further, even if vibration is transmitted from the speaker unit 1a to the speaker cabinet 2a or the speaker cabinet 2a vibrates due to the sound pressure on the back surface, the speaker unit 1a is directly supported by the support bar 3a. Vibration transmitted to the unit 1a can be suppressed. As a result, vibration transmission between the speaker cabinet 2a and the speaker unit 1a can be suppressed, noise generated from the speaker cabinet 2a can be reduced, sound quality of the speaker can be improved, and reproduced sound closer to the original sound can be realized. it can.
[0034]
Next, a speaker according to a second embodiment of the present invention will be described. FIG. 2 is a longitudinal side view schematically showing the configuration of the speaker according to the second embodiment of the present invention. The same parts of the speaker shown in FIG. 2 and the speaker shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0035]
The speaker shown in FIG. 2 is different from the speaker shown in FIG. 1 in that the support bar 3b penetrates the back of the speaker cabinet 2b, the back of the speaker cabinet 2b is joined to the support bar 3b, and the support bar 3b is directly connected to the ground plane. This is a point fixed to G.
[0036]
Even in this case, similarly to the above, the yoke 11a of the speaker unit 1a is not directly supported by the front surface of the speaker cabinet 2b via the frame 14a, but is directly supported by the support bar 3b. It is separated from the ground G. Therefore, unnecessary vibrations of the electromechanical converter due to the vibration of the diaphragm 15 are suppressed, absorbed by the ground plane G through the support bar 3b, and directly transmitted to the speaker cabinet 2b through the frame 14a. Can be suppressed. Further, even if vibration is transmitted from the speaker unit 1a to the speaker cabinet 2b or the speaker cabinet 2b vibrates due to the sound pressure on the back surface, the speaker unit 1a is directly supported by the support bar 3b. Vibration transmitted to the unit 1a can be suppressed. As a result, vibration transmission between the speaker cabinet 2b and the speaker unit 1a can be suppressed, noise generated from the speaker cabinet 2b can be reduced, sound quality of the speaker can be improved, and reproduced sound closer to the original sound can be realized. it can.
[0037]
Next, a speaker according to a third embodiment of the present invention will be described. FIG. 3 is a longitudinal side view schematically showing the configuration of the speaker according to the third embodiment of the present invention. The same parts of the speaker shown in FIG. 3 and the speaker shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0038]
The speaker shown in FIG. 3 differs from the speaker shown in FIG. 1 in that the support bar 3c penetrates the upper surface of the speaker cabinet 2c, the upper surface of the speaker cabinet 2c is joined to the support bar 3c, and the support bar 3c is directly connected to the grounding surface. This is a point fixed to G.
[0039]
Even in this case, similarly to the above, the yoke 11a of the speaker unit 1a is not directly supported by the front surface of the speaker cabinet 2c via the frame 14a, but is directly supported by the support bar 3c, and further, the speaker cabinet 2c is connected. It is separated from the ground G. Therefore, unnecessary vibrations of the electromechanical converter due to the vibration of the diaphragm 15 are suppressed, absorbed by the ground plane G through the support rod 3c, and directly transmitted to the speaker cabinet 2c through the frame 14a. Can be suppressed. Further, even if vibration is transmitted from the speaker unit 1a to the speaker cabinet 2c or the speaker cabinet 2c vibrates due to the back sound pressure, the speaker unit 1a is directly supported by the support bar 3c, and therefore the speaker cabinet 2c Vibration transmitted to the unit 1a can be suppressed. As a result, vibration transmission between the speaker cabinet 2c and the speaker unit 1a can be suppressed, noise generated from the speaker cabinet 2c can be reduced, sound quality of the speaker can be improved, and reproduced sound closer to the original sound can be realized. it can.
[0040]
As described above, in the first to third embodiments, various examples have been described in which the penetration position of the support bar with respect to the speaker cabinet is changed. If the electromechanical transducer is supported, the same effect can be obtained, and the same applies to the following embodiments.
[0041]
Next, a speaker according to a fourth embodiment of the present invention will be described. FIG. 4 is a longitudinal side view schematically showing the configuration of the speaker according to the fourth embodiment of the present invention. The same parts of the speaker shown in FIG. 4 and the speaker shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0042]
The speaker shown in FIG. 4 differs from the speaker shown in FIG. 1 in that the support bar 3a is inserted into a through-hole provided in the lower surface of the speaker cabinet 2d in a state of being separated from the speaker cabinet 2d, and the speaker cabinet 2d. Is a point that is joined to and supported by the frame 14a of the speaker unit 1a.
[0043]
The method for joining the speaker cabinet 2d and the frame 14a is not particularly limited as long as various methods such as screw fixing and adhesion can be used, and the method can join the speaker cabinet 2d so that the position of the speaker cabinet 2d can be regulated. In addition, the distance between the speaker cabinet 2d and the support bar 3a is preferably as narrow as possible in order to suppress air leakage from the speaker cabinet 2d to the outside as much as possible. In the present embodiment, since the speaker unit 2d is joined to and supported by the speaker unit 1a, the support bar 3a passes through the center of gravity of the entire speaker excluding the support bar 3a and the fixing base 4a and is parallel to the horizontal plane. It is joined to the yoke 11a on a straight axis.
[0044]
With the above configuration, since the yoke 11a of the speaker unit 1a is directly supported by the support bar 3a disposed on the ground plane G, the vibration of the electromechanical transducer accompanying the vibration of the diaphragm 15 can be suppressed. . Further, since the speaker cabinet 2d is separated from the support bar 3a and the ground plane G, unnecessary vibrations of the electromechanical converter are not transmitted to the speaker cabinet 2d via the support bar 3a. Furthermore, even if vibration is transmitted from the speaker unit 1a to the speaker cabinet 2d or the speaker cabinet 2d vibrates due to the sound pressure on the back surface, the speaker unit 1a is directly supported by the support bar 3c. Vibration transmitted to the unit 1a can be suppressed. As a result, vibration transmission between the speaker cabinet 2d and the speaker unit 1a can be suppressed, noise generated from the speaker cabinet 2d can be reduced, sound quality of the speaker can be improved, and reproduced sound closer to the original sound can be realized. it can.
[0045]
Next, a speaker according to a fifth embodiment of the present invention will be described. FIG. 5 is a longitudinal side view schematically showing the structure of the speaker of the fifth embodiment of the present invention. The same parts in the speaker shown in FIG. 5 and the speaker shown in FIG. 2 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0046]
The difference between the speaker shown in FIG. 5 and the speaker shown in FIG. 2 is that a vibration isolating member for the support member is provided between the support bar 3b inserted in the through hole provided in the back surface of the speaker cabinet 2e and the speaker cabinet 2e. A certain anti-vibration member 22 is provided, and the speaker cabinet 2e is joined to and supported by the support bar 3b via the anti-vibration member 22.
[0047]
Anti-vibration rubber, felt, cotton or the like can be used as the anti-vibration member 22, for example, sorbosein (release source, Sanshin Kogyo Co., Ltd.) or the like can be used. In addition, when vibration proof rubber is used, air leakage from the speaker cabinet 2e to the outside through the vibration proof member 22 can be completely prevented, and even when felt and cotton are used, air leakage is prevented. It can be prevented to some extent.
[0048]
As a method for joining the vibration isolator 22 to the support rod 3b and the speaker cabinet 2e, various methods such as screw fixing, press-fitting, and adhesion can be used, and the method can join the speaker cabinet 2e so as to regulate the position. If it does not specifically limit.
[0049]
With the above configuration, since the yoke 11a of the speaker unit 1a is directly supported by the support rod 3b, the vibration of the electromechanical transducer accompanying the vibration of the diaphragm 15 can be suppressed. In addition, since the speaker cabinet 2e is separated from the ground plane G and joined to the support bar 3b via the vibration isolating member 22, unnecessary vibrations of the electromechanical converter are generated via the support bar 3b. Transmission to the cabinet 2e can be suppressed. Furthermore, even if vibration is transmitted from the speaker unit 1a to the speaker cabinet 2e or the speaker cabinet 2e vibrates due to the back sound pressure, the speaker unit 1a is directly supported by the support bar 3b, so that the speaker cabinet 2e Vibration transmitted to the unit 1a can be suppressed. As a result, vibration transmission between the speaker cabinet 2e and the speaker unit 1a can be suppressed, noise generated from the speaker cabinet 2e can be reduced, sound quality of the speaker can be improved, and reproduced sound closer to the original sound can be realized. it can. In addition, application of said vibration isolator for support members can be similarly applied not only to this embodiment but also to other embodiments.
[0050]
Next, a speaker according to a sixth embodiment of the present invention will be described. FIG. 6 is a longitudinal side view schematically showing the configuration of the speaker according to the sixth embodiment of the present invention. The same parts of the speaker shown in FIG. 6 and the speaker shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0051]
The speaker shown in FIG. 6 differs from the speaker shown in FIG. 1 in that the support bar 3a is inserted into a through-hole provided in the lower surface of the speaker cabinet 2f in a state of being separated from the speaker cabinet 2f. Is supported by the cabinet support bar 5a, which is a speaker cabinet support member, and the fixed base 4b is fixed to the support bar 3a and the cabinet support bar 5a and arranged on the ground plane G.
[0052]
As a method for joining the speaker cabinet 2f and the cabinet support bar 5a, various methods such as screw fixing, press-fitting, and adhesion can be used, and the method is particularly limited as long as the method can join the speaker cabinet 2f to a degree that can regulate the position. Not. Further, the method for joining the cabinet support bar 5a and the fixed base 4b is the same as the method for joining the support bar 3a and the fixed base 4a in the first embodiment, and the distance between the speaker cabinet 2f and the support bar 3a. Is the same as in the fourth embodiment.
[0053]
With the above configuration, since the yoke 11a of the speaker unit 1a is directly supported by the support bar 3a disposed on the ground plane G, the vibration of the electromechanical transducer accompanying the vibration of the diaphragm 15 can be suppressed. . Further, since the speaker cabinet 2f is separated from the ground plane G and the support bar 3a and is directly supported by the cabinet support bar 5a, unnecessary vibration of the electromechanical converter is directly applied to the speaker cabinet 2f via the support bar 3a. Not transmitted. Furthermore, even if vibration is transmitted from the speaker unit 1a to the speaker cabinet 2f or the speaker cabinet 2f vibrates due to the back surface sound pressure, the speaker unit 1a is directly supported by the support bar 3a. Vibration transmitted to the unit 1a can be suppressed. As a result, vibration transmission between the speaker cabinet 2f and the speaker unit 1a can be suppressed, noise generated from the speaker cabinet 2f can be reduced, sound quality of the speaker can be improved, and reproduced sound closer to the original sound can be realized. it can.
[0054]
Next, a speaker according to a seventh embodiment of the present invention will be described. FIG. 7 is a longitudinal side view schematically showing the structure of the speaker according to the seventh embodiment of the present invention. The same parts in the speaker shown in FIG. 7 and the speaker shown in FIG. 6 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0055]
The speaker shown in FIG. 7 differs from the speaker shown in FIG. 6 in that the fixing base 4b is separated and a fixing base 4c dedicated to the support bar 3a and a fixing base 4d dedicated to the cabinet support bar 5b are provided. is there.
[0056]
The joining method of the cabinet support bar 5b and the speaker cabinet 2g is the same as that of the sixth embodiment, and the joining of the support bar 3a and the fixed base 4c and the connection of the cabinet support bar 5b and the fixed base 4d. The joining method is also the same as in the first embodiment.
[0057]
With the above configuration, since the yoke 11a of the speaker unit 1a is directly supported by the support bar 3a disposed on the ground plane G, the vibration of the electromechanical transducer accompanying the vibration of the diaphragm 15 can be suppressed. it can. Further, since the speaker cabinet 2g is completely separated from the support bar 3a and supported by the dedicated cabinet support bar 5b and the fixed base 4d, the speaker of unnecessary vibration of the electromechanical converter via the support bar 3a. Transmission to the cabinet 2g can be further reduced. Further, even if vibration is transmitted from the speaker unit 1a to the speaker cabinet 2g or the speaker cabinet 2g vibrates due to the back sound pressure, the speaker unit 1a is directly supported by the support bar 3a, and thus the speaker cabinet 2g Vibration transmitted to the unit 1a can be suppressed. As a result, vibration transmission between the speaker cabinet 2g and the speaker unit 1a can be suppressed, noise generated from the speaker cabinet 2g can be reduced, sound quality of the speaker can be improved, and reproduced sound closer to the original sound can be realized. it can.
[0058]
Next, a speaker according to an eighth embodiment of the present invention will be described. FIG. 8 is a longitudinal side view schematically showing the configuration of the speaker according to the eighth embodiment of the present invention. The same parts of the speaker shown in FIG. 8 and the speaker shown in FIG. 2 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0059]
The speaker shown in FIG. 8 differs from the speaker shown in FIG. 2 in that the speaker cabinet 2h is supported not only by the support bar 3b but also by the cabinet support bar 5c and fixed by the cabinet support bar 5c and the fixing base 4e. It is a point. Here, the joining method of the speaker cabinet 2h and the cabinet support bar 5c and the joining method of the cabinet support bar 5c and the fixing base 4e are the same as those in the seventh embodiment.
[0060]
With the above configuration, since the yoke 11a of the speaker unit 1a is directly supported by the support bar 3b disposed on the ground plane G, the vibration of the electromechanical transducer accompanying the vibration of the diaphragm 15 can be suppressed. . Further, since the speaker cabinet 2h is supported by the support bar 3b, the cabinet support bar 5c, and the fixing base 4e, the speaker cabinet 2h is supported more firmly than the support by only the support bar 3b, and further suppresses vibration transmission. Can do. Further, even if vibration is transmitted from the speaker unit 1a to the speaker cabinet 2h or the speaker cabinet 2h vibrates due to the sound pressure on the back surface, the speaker unit 1a is directly supported by the support bar 3b. Vibration transmitted to the unit 1a can be suppressed. As a result, vibration transmission between the speaker cabinet 2h and the speaker unit 1a can be suppressed, noise generated from the speaker cabinet 2h can be reduced, sound quality of the speaker can be improved, and reproduced sound closer to the original sound can be realized. it can.
[0061]
Next, a speaker according to a ninth embodiment of the present invention will be described. FIG. 9 is a longitudinal side view schematically showing the configuration of the speaker according to the ninth embodiment of the present invention. The same parts of the speaker shown in FIG. 9 and the speaker shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0062]
The speaker shown in FIG. 9 is different from the speaker shown in FIG. 1 in that the speaker cabinet 2i is joined to the frame 14b of the speaker unit 1b via a vibration isolating film 6 that is a vibration isolating member for the frame.
[0063]
As a method of joining the speaker cabinet 2 i and the anti-vibration film 6 and joining the frame 14 b and the anti-vibration film 6, various methods such as screw fixing and adhesion can be used. There is no particular limitation as long as it can be bonded to such an extent that the anti-vibration film 6 can be fixed. As the anti-vibration film 6, anti-vibration rubber, felt, cotton or the like can be used. For example, sorbosein (sales agency, Sanshin Kogyo Co., Ltd.) or the like can be used. In addition, when vibration-proof rubber is used, air leakage from the speaker cabinet 2i to the outside through the vibration-proof film 6 can be completely prevented, and even when felt and cotton are used, there is some air leakage. Can be prevented.
[0064]
With the above configuration, since the yoke 11a of the speaker unit 1b is directly supported by the support rod 3a disposed on the ground plane G, vibration of the electromechanical converter accompanying vibration of the diaphragm 15 can be suppressed. . Moreover, since the speaker cabinet 2i is joined to the frame 14b via the vibration-proof film 6, vibration transmission between the speaker cabinet 2i and the speaker unit 1b via the frame 14b can be suppressed. As a result, vibration transmission between the speaker cabinet 2i and the speaker unit 1b can be suppressed, noise generated from the speaker cabinet 2i can be reduced, sound quality of the speaker can be improved, and reproduced sound closer to the original sound can be realized. it can.
[0065]
Next, a speaker according to a tenth embodiment of the present invention will be described. FIG. 10 is a longitudinal side view schematically showing the configuration of the speaker according to the tenth embodiment of the present invention. The same parts of the speaker shown in FIG. 10 and the speaker shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0066]
The speaker shown in FIG. 10 differs from the speaker shown in FIG. 1 in that the speaker cabinet 2j and the frame 14a of the speaker unit 1a are separated from each other.
[0067]
With the above configuration, since the yoke 11a of the speaker unit 1a is directly supported by the support bar 3a disposed on the ground plane G, the vibration of the electromechanical transducer accompanying the vibration of the diaphragm 15 can be suppressed. . Further, since the speaker cabinet 2j is separated from the frame 14a of the speaker unit 1a, vibration transmission between the speaker cabinet 2j and the speaker unit 1a via the frame 14a is eliminated. As a result, vibration transmission between the speaker cabinet 2j and the speaker unit 1a can be suppressed, noise generated from the speaker cabinet 2j can be reduced, sound quality of the speaker can be improved, and reproduced sound closer to the original sound can be realized. it can.
[0068]
Next, a speaker according to an eleventh embodiment of the present invention will be described. FIG. 11 is a longitudinal side view schematically showing the configuration of the speaker according to the eleventh embodiment of the present invention. The same parts of the speaker shown in FIG. 11 and the speaker shown in FIG.
[0069]
The speaker shown in FIG. 11 differs from the speaker shown in FIG. 1 in that the lower surface 28b of the speaker cabinet 2k, which is a joint surface with other members, is made of a heavy material, and other surfaces 25a to 27a (not shown). (Including both side surfaces) is made of a lightweight material. Here, the specific gravity of the weight material is 0.5 or more, and the specific gravity of the lightweight material is preferably 0.3 or less. As the weight material, mahogany, rosewood (rosewood), ebony (ebony), Laminated wood such as firewood, firewood, firewood, teak, pine, spruce, etc., laminated wood such as plywood or particle board can be used, and lightweight materials include polystyrene foam, balsa, paulownia, or a combination of these Can be used.
[0070]
With the above configuration, the same effects as in the first embodiment can be obtained in the eleventh embodiment, and only the lower surface 28b joined to the other members of the speaker cabinet 2k is made of a heavy material. And since the other part is comprised with the lightweight material, a speaker cabinet can be reduced in weight, ensuring the intensity | strength of a junction part.
[0071]
Next, a speaker according to a twelfth embodiment of the present invention will be described. FIG. 12 is a longitudinal side view schematically showing the structure of the speaker of the twelfth embodiment of the present invention. The same parts of the speaker shown in FIG. 12 and the speaker shown in FIG. 2 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0072]
The speaker shown in FIG. 12 differs from the speaker shown in FIG. 2 in that the back surface 27b of the speaker cabinet 2m, which is a joint surface with other members, is made of a heavy material, and the other surfaces 25a, 26a, 28a (illustrated). (Including both side surfaces that are not) are made of lightweight materials. The materials of the heavy and light materials are the same as those in the eleventh embodiment.
[0073]
According to the above configuration, the twelfth embodiment can achieve the same effects as those of the second embodiment, and further, only the back surface 27b to be joined to the other members of the speaker cabinet 2m is made of a weight material. And since the other part is comprised with the lightweight material, a speaker cabinet can be reduced in weight, ensuring the intensity | strength of a junction part.
[0074]
Next, a speaker according to a thirteenth embodiment of the present invention will be described. FIG. 13 is a longitudinal side view schematically showing the configuration of the speaker of the thirteenth embodiment of the present invention. The same parts of the speaker shown in FIG. 13 and the speaker shown in FIG.
[0075]
The difference between the speaker shown in FIG. 13 and the speaker shown in FIG. 3 is that the central portion 29 of the upper surface of the speaker cabinet 2n, which is a joint portion with another member, is made of a heavy material, and the other portions 25a, 27a, 28a. , 30 (including both side surfaces not shown) is made of a lightweight material. The materials of the heavy and light materials are the same as those in the eleventh embodiment.
[0076]
With the above configuration, the thirteenth embodiment can achieve the same effects as those of the third embodiment. Furthermore, only the center portion 29 of the upper surface joined to the other members of the speaker cabinet 2m is weighted. Since it consists of material and the other part is comprised with the lightweight material, a speaker cabinet can be further reduced in weight, ensuring the intensity | strength of a junction part.
[0077]
Next, an adjustment member that adjusts the position of the center of gravity so that the support member supports the center of gravity of the entire speaker or the center of the speaker unit excluding the support member will be described. FIG. 14 is a cross-sectional view of the speaker unit for explaining an example of the adjustment member.
[0078]
As shown in FIG. 14, a yoke 11b having an enlarged rear end is used as an adjustment member so that the center of gravity C of the speaker unit is positioned at the tip of the recess H1 into which a support rod as a support member is inserted. . Therefore, by changing the shape of the yoke in this way, the position of the center of gravity of the speaker unit can be easily adjusted, and the selection of the joining position between the support bar and the yoke is facilitated. Note that various methods such as welding, screw fixing, press-fitting, and adhesion can be used for joining the support rod and the yoke. In the case of screw fixation, the male screw portion is directly attached to the support rod, and the concave portion H1 of the yoke 11b. An internal thread portion may be provided directly on the head. When the center of gravity position is adjusted so that the support member supports the center of gravity of the entire speaker excluding the support member, the center of gravity position can be adjusted in the same manner as described above by further increasing the yoke 11b. The same applies to each example.
[0079]
Next, another example of the adjustment member will be described. FIG. 15 is a cross-sectional view of a speaker unit for explaining another example of the adjustment member.
[0080]
As shown in FIG. 15, a yoke 11c having a convex portion T1 and having an enlarged rear end is used as an adjustment member so that the center of gravity C of the speaker unit is located at the center. In this case as well, as described above, the position of the center of gravity of the speaker unit can be easily adjusted, and the selection of the joining position between the support bar and the yoke is facilitated. The method of joining the support rod and the yoke is the same as described above. In the case of screw fixing, the internal thread portion may be directly provided on the support rod, and the external thread portion may be directly provided on the convex portion T1 of the yoke 11c.
[0081]
Next, still another example of the adjustment member will be described. FIG. 16 is a cross-sectional view of a speaker unit for explaining still another example of the adjustment member.
[0082]
As shown in FIG. 16, a frame 14c having a recess H2 and enlarged so as to cover the magnetic circuit portion is used as an adjustment member so that the center of gravity C of the speaker unit is located at the center. Note that the magnet is changed to a small-diameter magnet 12b so that the magnetic circuit portion is accommodated in the frame 14c as it is. In this case as well, as described above, the position of the center of gravity of the speaker unit can be easily adjusted, and the selection of the joining position between the support bar and the yoke is facilitated. The method of joining the support bar and the frame is the same as described above. In the case of screw fixing, the male screw part may be provided directly on the support bar, and the female screw part may be provided directly on the recess H2 of the frame 14c.
[0083]
The adjustment member is not particularly limited to the one integrated with other parts as described above, and may be constituted by another part. In each of the above embodiments, the yoke and the support rod are joined. However, as shown in FIG. 16, other members near the electromechanical converter and the support rod may be joined.
[0084]
Further, the above embodiments can be arbitrarily combined, and in that case, the same effect can be obtained, and the present invention is not limited to high-end audio speakers, but also general speakers, in-vehicle speakers, etc. It can be applied to various speakers.
[0085]
【The invention's effect】
According to the present invention, the electromechanical transducer of the speaker unit is directly supported by the support member installed on the ground plane, and the speaker cabinet is separated from the ground plane. Unnecessary vibrations can be suppressed and absorbed by the grounding surface by the support member and transmitted directly to the speaker cabinet. Furthermore, even if vibration is transmitted from the speaker unit to the speaker cabinet, the speaker unit is directly supported by the support member, so that vibration transmitted from the speaker cabinet to the speaker unit can be suppressed. Therefore, the independence of the speaker unit with respect to the speaker cabinet can be increased, vibration transmission between the speaker cabinet and the speaker unit can be suppressed, noise generated from the speaker cabinet can be reduced, and sound quality of the speaker can be improved. Reproduced sound closer to the original sound can be realized.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view schematically showing a configuration of a speaker according to a first embodiment of the present invention.
FIG. 2 is a longitudinal side view schematically showing a configuration of a speaker according to a second embodiment of the present invention.
FIG. 3 is a longitudinal side view schematically showing a configuration of a speaker according to a third embodiment of the present invention.
FIG. 4 is a longitudinal side view schematically showing a configuration of a speaker according to a fourth embodiment of the present invention.
FIG. 5 is a longitudinal side view schematically showing a configuration of a speaker according to a fifth embodiment of the present invention.
FIG. 6 is a longitudinal side view schematically showing a configuration of a speaker according to a sixth embodiment of the present invention.
FIG. 7 is a longitudinal side view schematically showing a configuration of a speaker according to a seventh embodiment of the present invention.
FIG. 8 is a longitudinal side view schematically showing a configuration of a speaker according to an eighth embodiment of the present invention.
FIG. 9 is a longitudinal side view schematically showing a configuration of a speaker according to a ninth embodiment of the present invention.
FIG. 10 is a longitudinal side view schematically showing a configuration of a speaker according to a tenth embodiment of the present invention.
FIG. 11 is a longitudinal side view schematically showing a configuration of a speaker according to an eleventh embodiment of the present invention.
FIG. 12 is a longitudinal side view schematically showing a configuration of a speaker according to a twelfth embodiment of the present invention.
FIG. 13 is a longitudinal side view schematically showing a configuration of a speaker according to a thirteenth embodiment of the present invention.
FIG. 14 is a cross-sectional view of a speaker unit for explaining an example of an adjustment member.
FIG. 15 is a cross-sectional view of a speaker unit for explaining another example of the adjustment member.
FIG. 16 is a cross-sectional view of a speaker unit for explaining still another example of the adjustment member.
[Explanation of symbols]
1a to 1b Speaker unit
2a to 2n speaker cabinet
3a-3c Support rod
4a-4e fixed base
5a-5c Support rod for cabinet
6 Anti-vibration film
11a-11c York
12a, 12b magnet
13 plates
14a-14c frame
15 Diaphragm
16 Voice coil
17 edge
18 Damper
21 Through hole
22 Anti-vibration member

Claims (3)

A speaker unit comprising: a diaphragm; a frame that fixes an outer periphery of the diaphragm; and an electromechanical converter that converts an audio signal into mechanical vibration of the diaphragm;
A speaker cabinet that covers the back of the speaker unit and is spaced apart from the ground plane;
A speaker unit support member that penetrates the speaker cabinet in a state of being separated from the speaker cabinet, one end is installed on a ground plane, and the other end is fixed to the electromechanical transducer to support the speaker unit ;
A speaker comprising: a cabinet support member having one end installed on a ground plane and the other end supporting the speaker cabinet in a state of being separated from the speaker unit support member . A speaker unit comprising: a diaphragm; a frame that fixes an outer periphery of the diaphragm; and an electromechanical converter that converts an audio signal into mechanical vibration of the diaphragm;
A speaker cabinet that covers the back of the speaker unit and is spaced apart from the ground plane;
One end is fixed to the electromechanical transducer to support the speaker unit, and the other end is a speaker including a support member that is installed on a ground surface through the speaker cabinet,
The speaker cabinet is supported by the support member via the speaker unit,
It said support member supports said speaker unit on the axis through the center of gravity of the entire speaker except for the supporting member, a speaker. The speaker unit includes a speaker according to claim 2, wherein said support member further comprises an adjustment member for adjusting the gravity center position to support the center of gravity of the entire speaker except for the supporting member.

Images