JPH0112472Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a speaker connected to an audio reproduction device, and the speaker is composed of a cylindrical case and a speaker unit housed in the cylindrical case so as to be able to move in and out. on the external surface,
A plurality of sliding guide ribs are interspersed. There are various types of speakers that are connected to audio playback devices that do not have speakers, such as portable small audio playback devices, that are lightweight and compact, have excellent portability, ease of handling, and storage, and have good sound quality. requirements are required. The present invention was devised for the purpose of providing a new speaker that satisfies the various requirements required for this type of speaker. Consisting of
A plurality of sliding guide ribs are dotted on the outer surface of the inner tip of the speaker unit, thereby making the speaker superior in portability, ease of handling, and storage. This prevents the outer surface of the speaker unit from sliding against the inner surface of the cylindrical case, causing wear and damage when the speaker unit is moved in and out of the cylindrical case, and also prevents vibrations from being transmitted to the cylindrical case when the speaker unit is driven. This prevents the cylindrical case from vibrating and making noise. Embodiments of the present invention will be described below with reference to the drawings.

In Figures 1 to 3, 1 is a substantially rectangular cylindrical case made of a thin plate made of a material with some elasticity such as ABS resin or polyacetal resin, and the inside of the case is made of a material with some elasticity such as ABS resin or polyacetal resin. Two substantially rectangular speaker units 2 and 3 made of a thin plate-shaped material are housed so as to be removable and removable. That is, entrances and exits 4 and 5 are provided on both sides of the cylindrical case 1, and each speaker unit 2 and 3 enters and exits the cylindrical case 1 by sliding in the lateral direction through the entrances and exits 4 and 5. A horizontally long see-through window 6 is provided at a slightly lower portion of the front wall 1a of the cylindrical case 1, and a speaker unit rear wall 2, which will be described later, is provided on both sides of the inner wall surface of the rear wall 1b.
Positioning protrusions 7 and 8 of the speaker units 2 and 3 that fit into the grooves 13 and 14 of the speakers b and 3b are provided to protrude laterally in the direction in which the speaker units 2 and 3 come in and out. Furthermore, several anti-slip grooves 9 are recessed in the upper part of the outer wall surface of the cylindrical case rear wall 1b in the lateral direction. By forming the see-through window 6, protrusions 7, 8, grooves 9, etc. in the cylindrical case 1 in this way, the stiffness of the walls can be partially changed and the vibration mode of the wall surface can be changed. It is possible to effectively prevent the cylindrical case 1 from resonantly vibrating and producing noise when the units 2 and 3 are driven. Note that a transparent plate may be attached to the transparent window 6.

The speaker units 2 and 3 have front walls 2a and 3a.
A sound generator 10 is mounted on the inner wall surface of the sound generator 10, and a cover plate 11 is mounted on the front part of the sound generator 10.
As described above, the speaker units 2 and 3 slide in and out of the cylindrical case 1 through the entrances and exits 4 and 5 on both sides of the cylindrical case 1.
A sliding guide rib 12 is provided on the outer surface of the inner tip of the
is installed protrudingly. A plurality of ribs 12 protrude from the corners of the outer surface of the inner tip at various locations, and the upper surface of the ribs 12 slides against the corners of the inner surface of the cylindrical case 1 (see Fig. 4). . Also, cylindrical case 1
There are protrusions 24 on the top and bottom of both sides of the interior to prevent them from coming off.
When the speaker units 2 and 3 are pulled out, the rib 12 abuts against the protrusion 24 to prevent the speaker units 2 and 3 from coming out of the cylindrical case 1. On the outer wall surface of the rear walls 2b, 3b of each speaker unit 2, 3, which are in sliding contact with the inner wall surface of the cylindrical case 1 on which the protrusions 7, 8 are protruded, there are grooves that fit into the protrusions 7, 8. Grooves 13 and 14 are horizontally recessed along the direction in which the speaker units 2 and 3 go in and out, and the speaker units 2 and 3 are completely housed in the cylindrical case (see the dotted line in Figure 3).
The concave grooves 13 and 14 are completely fitted into the protrusions 7 and 8, and the speaker units 2 and 3 are positioned within the cylindrical case 1 (see FIGS. 5a and 5b). 15,1
6 is the front wall 2a, 3a of each speaker unit 2, 3
and finger hook projections protruding from the outer ends of the rear walls 2b and 3b, and corresponding to these projections 15 and 16, there are notches on both sides of the front wall 1a and the rear wall 1b of the cylindrical case 1. Recesses 17 and 18 are formed. With each speaker unit 2, 3 housed in the cylindrical case 1, each protrusion 15, 16 is exposed from each recess 17, 18, and by hooking a fingertip onto each protrusion 15, 16, each speaker unit 2, 3 can be easily pulled out from the cylindrical case 1. Legs 19 are protruded from the outside of the bottom surface of each speaker unit 2, 3, and are grounded together with the bottom surface of the cylindrical case 1 when each speaker unit 2, 3 is pulled out from the cylindrical case 1. (See the dashed line in the figure). Furthermore, when storing each of the speaker units 2 and 3 in the cylindrical case 1, it is sufficient to press the speaker units 2 and 3 into the cylindrical case 1 by placing a fingertip on the side surface of the speaker units 2 and 3. 20
21 is a sliding switch button provided on the top of the speaker unit 3, 22 is a plug socket, and 23 is a drive display. It's a lamp.

In the above structure, the speaker units 2 and 3 are pulled out from the cylindrical case 1 when in use, and are housed in the cylindrical case 1 when not in use.
is protruded, and the upper surface of the rib 12 slides on the inner surface of the cylindrical case 1 to guide the insertion and removal of each speaker unit 2, 3, so that the outer surface of the speaker unit 2, 3 is It will not slide against the inner surface of the cylindrical case 1 and cause wear or damage. In addition, the ribs 12 are scattered and protruded to reduce the sliding contact area between the upper surface of the ribs 12 and the inner surface of the cylindrical case 1, so that an appropriate sliding resistance is created between the upper surface of the ribs 12 and the inner surface of the cylindrical case 1. This has the advantage that the speaker units 2 and 3 can be taken in and out easily. Furthermore, if the ribs 12 are scattered in this manner to reduce the contact area between the upper surface of the ribs 12 and the inner surface of the cylindrical case 1, the vibration transmitted from the speaker units 2 and 3 to the cylindrical case 1 when the speakers are driven is reduced. This can prevent the cylindrical case 1 from vibrating and producing noise. In particular, if the ribs 12 are dotted at the corners of the speaker units 2 and 3 as in this embodiment, both the corners of the speaker units 2 and 3 and the corner of the cylindrical case 1 that the ribs 12 contact will have rigidity. is large and difficult to vibrate, so the vibrations transmitted to the cylindrical case 1 are extremely small, and therefore the cylindrical case 1 emits almost no vibration noise, making it possible to obtain excellent reproduced sound. Furthermore, if the speaker units 2 and 3 are stored in the cylindrical case 1 when not in use, they become extremely compact and convenient for carrying.When in use, the speaker units 2 and 3 can be pulled out and separated from each other. By doing so, you can hear excellent playback sound. If the ribs are not interspersed but protrude over a wide range on the outer surfaces of the speaker units 2 and 3, the contact area between the top surface of the ribs and the inner surface of the cylindrical case 1 becomes large, resulting in excessive sliding resistance. Speaker unit 2, 3
Not only is it difficult to put in and take out the speaker units 2 and 3, but the vibrations of the speaker units 2 and 3 are largely transmitted to the cylindrical case 1, causing the cylindrical case 1 to resonate strongly and generate large noise. Therefore, it is more preferable that the ribs be provided protrudingly at various locations on the outer surfaces of the speaker units 2 and 3 as described above.

The present invention allows for various design changes; for example, the shapes of the cylindrical case and speaker unit are not limited to those exemplified in the above embodiments, and the speaker unit can be slidably inserted into the cylindrical case. It can be applied to various shapes as long as it can be inserted.

As explained above, the speaker according to the present invention is
It consists of a cylindrical case 1 and speaker units 2 and 3 that are housed in the cylindrical case 1 so as to be able to slide in and out through openings 4 and 5 of the cylindrical case 1. , a plurality of sliding guide ribs 12 are interspersed, so when the speaker units 2 and 3 are taken in and out of the cylindrical case 1, the outer surfaces of the speaker units 2 and 3 do not touch the inner surface of the cylindrical case 1. There is no damage or wear due to sliding contact, and when the speaker units 2 and 3 are inserted and removed, a moderate amount of sliding resistance is generated, making it easy to insert and remove them.Also, the vibration of the speaker units 2 and 3 when driven is suppressed by the cylindrical shape. It is difficult for the noise to be transmitted to the case 1, and therefore, the generation of noise due to the vibration of the cylindrical case 1 is prevented, so high-quality reproduced sound can be obtained, and it is also excellent in portability, ease of handling, storage, etc. There is an effect.

[Brief explanation of drawings]

The figure shows an embodiment of the present invention.
The figure is a perspective view of the speaker, FIG. 2 is a rear perspective view in an exploded state, FIG. 3 is a front view during handling, and FIGS. 4 and 5 a and 5 b are sectional views, respectively. 1... Cylindrical case, 2, 3... Speaker unit, 4, 5... Entrance/exit, 12... Sliding guide rib.

Claims (1)

[Scope of utility model registration request] It consists of a cylindrical case 1 and speaker units 2 and 3 that are housed in the cylindrical case 1 so as to be able to slide in and out through openings 4 and 5 of the cylindrical case 1. , a speaker characterized in that a plurality of sliding guide ribs 12 are scattered.