JPH0629293U - Speaker mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] Absorption of vibrations in a weak mechanical strength part of a speaker box made of multiple materials improves acoustic characteristics and simplifies the work of closing the speaker connection cord extraction hole. Become. [Structure] For example, a resin case 2 is fixed to a substrate 1 to form a speaker box 3, and a speaker 4 is attached to the periphery of a sound output hole 5 of the case 2. The speaker connection cord 6 is pulled out from the drawing hole 7 of the board 1, and the drawing hole 7 is formed when the case 2 is fixed to the board 1.
It is closed by the cushion material 8 attached to the back surface of the speaker 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting structure for a speaker used in, for example, an electronic piano.

[0002]

[Prior art]

 Conventionally, for example, in a speaker mounting structure of an electronic piano, as shown in FIG. 3, an opening of a resin case b is fixed to a shelf board a of a piano case, and a speaker d is attached to the periphery of a sound output hole c of the case b. The connection cord e of the speaker d is fixed and drawn out to the outside through a drawing hole f formed in the shelf board a, and the drawing hole f is closed by a filling material g.

[0003]

[Problems to be solved by the device]

 According to the speaker mounting structure described above, among the speaker boxes composed of a plurality of materials, the part of the material having weak mechanical strength is easily vibrated by the sound emitted from the speaker, resulting in poor acoustic characteristics and the speaker connection cord. However, there is a problem in that the work of closing the extraction hole of the item with a filling material is troublesome.

The present invention has been made in view of such inconvenience of the conventional speaker mounting structure, and an object thereof is to improve the sound quality and facilitate the speaker mounting work.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention forms a speaker box by fixing an opening of a case to a substrate, and a speaker is provided in the speaker box at the periphery of one of the substrate and the sound emission hole of the case. A speaker connection cord is formed in the other side, a cushioning material is interposed between the rear surface of the speaker and the other of the substrate and the case, and the extraction hole in which the speaker connection cord is drawn out is formed by the cushioning material. It is characterized by being blocked.

[0006]

[Action]

 Of the speaker and speaker box, the case with weak mechanical strength tries to vibrate due to the sound emitted from the speaker.However, vibration is not generated because the cushioning material is interposed between the speaker's rear part and the substrate or case. It is absorbed by the cushioning material, so no noise is generated from the case and the acoustic characteristics are not impaired. Further, since the speaker connection cord extraction hole formed on the board or case is closed by the cushion material, the sound emitted from the back surface of the speaker is not emitted to the outside through the extraction hole, and this sound causes the speaker Sound emitted from the front is not canceled or weakened.

[0007]

【Example】

 Hereinafter, the drawings of the embodiments of the present invention will be described. FIG. 1 shows an embodiment of the present invention applied to, for example, a speaker of an electronic piano. In FIG. 1, reference numeral 1 is a shelf board of an electronic piano, 2 is a resin case fixed to the lower surface of the shelf board 1, and the shelf board 1 and the case 2 form a speaker box 3.

The speaker 4 is fixedly arranged on the peripheral portion of the sound output hole 5 of the case 2, and the speaker connection cord 6 is pulled out to the outside through the pull-out hole 7 provided in the shelf board 1, and the case 2 is closed. The cylindrical cushion member 8 attached to the back surface of the speaker 4 is pressed against the pull-out hole 7 of the shelf board 1 so as to close the pull-out hole 7 when it is fixed to the pull-out hole 7. The mechanical strength of the shelf 1 is larger than that of the resin case 2, and the vibration of the speaker 4 and the resin case 2 due to the sound emission of the speaker 4 is absorbed by the cushion material 8.

FIG. 2 shows another embodiment in which the speaker 4 is provided on the lower portion of the shelf board 1 in the embodiment of FIG. 1, whereas the speaker 4 is provided on the upper portion of the shelf board 1.

In this embodiment, the speaker 4 is fixed to the hole edge of the sound output hole 5 on the upper part of the shelf 1, and the resin case containing the speaker 4 is fixed to the upper part of the shelf 1. The speaker connection cord 6 is pulled out to the outside from the pull-out hole 7 formed in the resin case 2, and the cushion material 8 attached to the back surface of the speaker 4 closes the pull-out hole 7 so that the resin case 2 is closed. It is pressed against the drawer hole.

According to this embodiment, the cushion material 8 absorbs the vibration of the resin case 2 caused by the sound emitted from the back surface of the speaker 4.

[0012]

[Effect of device]

 Since the present invention is configured as described above, the vibration due to the sound emission of the speaker in the weak mechanical strength portion of the speaker box made of a plurality of materials is absorbed and the acoustic characteristics are improved. At the same time, it has the effect of facilitating the work of closing the extraction hole of the speaker connection cord.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention applied to an electronic piano.

FIG. 2 is a sectional view of another embodiment of the present invention applied to an electronic piano.

FIG. 3 is a sectional view of a conventional speaker mounting structure applied to an electronic piano.

[Explanation of symbols]

1 substrate 2 resin case 3 speaker box 4 speaker 5 sound emission hole 6 speaker connection cord 7 drawer hole 8 cushion material

Claims (1)

[Scope of utility model registration request] 1. A speaker box is formed by fixing an opening of a case to a substrate, a speaker is attached to a peripheral portion of a sound output hole of one of the substrate and the case in the speaker box, and a speaker connecting cord is attached to the other. Forming a drawer hole,
A speaker mounting structure characterized in that a cushioning material is interposed between a back surface of the speaker and the other of the substrate and the case, and the cushioning material closes the lead-out hole through which the speaker connection cord is drawn out.