JP2011176724A - Speaker device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To mount a removable protecting cover without providing any special mounting part on the front of an enclosure. <P>SOLUTION: A speaker device is comprised of: an enclosure 1 having an opening 2 that is concentric to a squawker/tweeter 3; a woofer 4 installed at such a position as to emit sonic waves from the opening 2 inside the enclosure 1; and a removable protecting cover 5 having a grill part 5a. The protecting cover 5 protects a front side of the squawker/tweeter unit 3 and can be held at an edge of the opening 2 through a holding member 6. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a speaker device provided with a removable protective cover.

  In order to protect a speaker cone or the like, a normal speaker device often has a front surface portion covered with a protective cover using a saran net or a punching metal. However, since the sound reproduced by the speaker device passes through the protective cover, sound in a specific frequency band is attenuated by the protective cover and reaches the user's ear. Therefore, there is a demand for a protective cover that can be easily attached and detached such that the protective cover is removed when the speaker device is used and the protective cover is attached when the speaker device is not used.

  On the other hand, it is also an important factor that the appearance of the speaker device is not impaired both when the protective cover is attached and when it is removed.

  Therefore, Patent Document 1 discloses a speaker device having a removable protective cover. According to the mounting method of the speaker device and the protective cover described in Patent Document 1, the protective cover is screwed, fixed with a magnet, or held using a double-sided tape. In addition, a peelable adhesive is used or a special attachment site is provided.

JP 2005-210661 A

  However, as shown in Patent Document 1, if the protective cover is bonded with an adhesive, it cannot be easily attached and detached. On the other hand, if the amount of the adhesive is larger than the specified amount, the adhesive may be exposed to the appearance portion and the appearance may be deteriorated.

  In addition, when the protective cover is screwed, it is necessary to use a screw and a screwdriver for attachment and detachment, and it is necessary to use a structure that does not expose the screw.

  When an easily detachable mounting member is used, the protective cover can be easily attached and detached. However, when the protective cover is removed, the mounting member is exposed and the appearance may be impaired.

  An object of the present invention is to solve the above-mentioned problems and to provide a speaker device in which a protective cover can be attached and detached without providing a special attachment site for the enclosure.

  In order to achieve the above object, a speaker device according to the present invention includes a mid-high sound speaker disposed toward an opening of an enclosure, and a bass disposed within the enclosure at a position where sound is emitted from the opening. And a protective cover that can be attached to and detached from the opening.

  According to the speaker device of the present invention, the protective cover can be easily attached and detached without the enclosure having a special part or member for holding the protective cover. In addition, if a guide is provided on the protective cover and the guide is positioned using the edge of the opening, the protective cover can be attached and detached without damaging the speaker. can do.

1 is a front view of a speaker device of Example 1. FIG. It is a front view of the speaker apparatus of the state which removed the protective cover. It is sectional drawing along the AA line of FIG. It is sectional drawing of the protective cover which provided the member for damage prevention. 6 is a front view of a speaker device according to Embodiment 2. FIG. It is a front view of the speaker apparatus of the state which removed the protective cover. It is sectional drawing along the BB line of FIG. It is a block diagram of the attachment part of a protective cover. It is explanatory drawing of the attachment method of a protective cover. It is explanatory drawing of the attachment method of a protective cover. It is explanatory drawing of the attachment method of a protective cover.

  The present invention will be described in detail based on the embodiments shown in the drawings.

  FIG. 1 is a front view of the speaker device according to the first embodiment, FIG. 2 is a front view with a protective cover removed, and FIG. 3 is a cross-sectional view taken along the line AA of FIG. A plurality of openings 2 arranged concentrically are provided in an enclosure 1 formed of a hollow casing, and a middle / high tone speaker 3 called a tweeter is arranged at substantially the center thereof. The middle / high tone speaker 3 is held inside the opening 2 and generates sound outward.

  The low-frequency speaker 4 called a woofer is arranged inside the lower part of the enclosure 1 with the speaker cone 4a facing upward. Sounds from the middle / high tone speaker 3 and the bass speaker 4 function as a speaker device by being released to the outside of the enclosure 1 through the opening 2.

  In addition, a protective cover 5 having a holding member 6 made of an elastic body such as a synthetic resin at its edge and functioning also as a scratch preventing member is attached to the outer peripheral end of the opening 2 on the front surface of the enclosure 1. The holding member 6 has a structure that can be attached to and detached from the opening 2 by an elastic force, and can be mounted over the edge of the opening 2.

  FIG. 4 shows an example in which a scratch preventing member such as a synthetic resin is used for the holding member 6, and the holding member 6 does not damage the enclosure 1. The protective cover 5 covers the opening 2 to protect the front portion of the middle / high tone speaker 3 and the speaker cone 4 a of the bass speaker 4. Thereby, foreign matter mixing from the opening 2 and damage to the middle / high tone speaker 3 can be prevented.

  In addition, the protective cover 5 is provided with a net-like or lattice-like grill portion 5 a for emitting sound from the mid-high tone speaker 3 and the bass speaker 4. By this grill portion 5a, the user can make the speaker device function with the protective cover 5 attached, and the usage forms are diversified.

  Thus, it is necessary to provide the enclosure 1 with a special screw hole, an attachment site such as an adhesive, etc., by holding the protective cover 5 via the holding member 6 in the opening 2 provided for sound emission. Absent. Thereby, the speaker apparatus which can attach or detach the protective cover 5 without impairing an external appearance can be obtained.

  The low sound speaker 4 may be disposed above the middle / high sound speaker 3 in the enclosure 1. However, if the bass speaker 4 is arranged on the upper side, the position of the center of gravity of the speaker device rises, and there is a risk of falling or the like. Accordingly, it is desirable that the bass speaker 4 is disposed below the middle / high tone speaker 3 inside the enclosure 1.

  The protective cover 5 is provided with the grill portion 5a. However, the protective cover 5 may be a frame provided with a protective net. Further, the sliding portion of the holding member 6 at the edge of the opening 2 has a scratch made of foam material such as felt, soft resin, sponge, low friction resin such as Teflon (registered trademark), or a laminate of these. You may provide the member for prevention. Providing such a scratch prevention member can reduce the risk of scratching the surface of the enclosure 1. The scratch preventing member may be provided in the enclosure 1, but if provided on the holding member 6, it can be attached without impairing the appearance.

  5 is a front view of the speaker device according to the second embodiment, FIG. 6 is a front view of the speaker device with the protective cover removed, and FIG. 7 is a cross-sectional view taken along the line BB of FIG. The enclosure 11 is a sphere having a hollow inside, and a plurality of openings 12 are concentrically arranged at the front part, and the sound for the middle and high tone speakers 3 is emitted at the rear part of these openings 12 and further at the rear part. The low-frequency speakers 4 are arranged so that the direction in which they are aligned is coaxial.

  Since the high sound has a characteristic that the wavelength is shorter than that of the low sound and is difficult to go around, it is preferable that the middle / high sound speaker 3 is attached in front of the enclosure 11.

  A space is formed between the rear portion 3a of the rear portion of the middle / high tone speaker 3 and the speaker cone 4a of the bass speaker 4, and the sound from the bass speaker 4 is exposed to the outside through the opening 12 arranged in an arc shape. To be released.

  In particular, if the speakers 3 and 4 are arranged coaxially as in the second embodiment, the sound sources of the speakers 3 and 4 can be arranged coaxially and at a short distance. It becomes easy to synchronize. If the middle / high tone speaker 3 is provided in the substantially central opening 12 with respect to the openings 12 arranged in an arc shape, reproduced sounds of low and medium / high sounds are radiated substantially axisymmetrically, so that a good sound field is obtained. Generated.

  Guides 14 are provided at, for example, three tips of the hemispherical protective cover 13 that covers the central opening 12, and the guides 14 are open in a surface direction that is perpendicular to the axis of the mid-high sound speaker 3. Attachment is performed using the edge of the portion 12. Thereby, when attaching the protective cover 13 to the enclosure 11, an accidental contact can be stably prevented and damage can be prevented. In addition, when reproducing | regenerating an audio | voice, if the protective cover 13 is removed, it is not necessary to provide a grill part in the protective cover 13. FIG.

  As shown in FIG. 8, guides 14 are attached to the three positions of the end portion of the protective cover 13 via the movable portion 15. The movable portion 15 fixes the movable member 16 to the protective cover 13 and has an elastic member 17 such as a compression spring between the guides 14. Further, the connecting portion 18 protrudes inward from the movable portion 15.

  When the protective cover 13 is attached, the guide 14 is brought into contact with the rear end of the opening 12, the movable member 16 is pressed in the direction of arrow a, the elastic member 17 is compressed, and the connecting portion 18 passes through the opening 12. The movable part 15 is operated.

  As shown in FIG. 9, the movable portion 15 is further moved in the direction a, and the connecting portion 18 passes through the opening 12 as shown in FIG. When the pressing of the movable member 16 is released by releasing the hand as shown in FIG. 11, the movable member 16 returns to the arrow b direction by the restoration of the elastic member 17, and the connecting portion 18 is locked to the edge of the opening 12. .

  The guide 14 is positioned using the outer edge of the opening 12, but the inner edge of the opening 12 can also be used.

  Moreover, when removing the protective cover 13, it can remove by performing operation | movement contrary to the above-mentioned.

  In the second embodiment, the guide 14 and the movable portion 15 are provided at three locations on the protective cover 13, but can be attached and detached by providing at least two locations. The movable portion 15 is not limited to this configuration.

DESCRIPTION OF SYMBOLS 1, 11 Enclosure 2, 12 Opening part 3 Medium / high-pitched speaker 4 Low-pitched speaker 5, 13 Protective cover 6 Holding member 14 Guide 15 Movable part 16 Movable member 17 Elastic member 18 Connection part

Claims (6)

  A mid-high sound speaker arranged toward the opening of the enclosure, a low-frequency speaker arranged in a position where the sound is emitted from the opening inside the enclosure, and a protective cover detachable from the opening A speaker device characterized by comprising:   The speaker device according to claim 1, wherein the protective cover is held at an edge of the opening from which the sound of the middle / high-pitched speaker is emitted.   The speaker device according to claim 1, wherein the protective cover is held at an edge of the opening from which the sound from the bass speaker is emitted.   The said protective cover has a guide, and this guide performs positioning of the surface direction which becomes perpendicular | vertical to the axis | shaft of the said middle and high-pitched sound speaker using the edge of the said opening part. Speaker device.   5. The speaker device according to claim 1, wherein the low-frequency speaker is arranged at a rear portion of the middle-high frequency speaker and is coaxial with a direction in which sound is emitted.   The speaker device according to any one of claims 1 to 5, wherein the protective cover protects a front surface of the middle / high tone speaker.

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