JPS5853821Y2 - Mounting spacer for embedded speaker - Google Patents

Description

[Detailed Description of the Invention] This invention particularly relates to a spacer for mounting an embedded speaker for a car stereo used in a rear storage stand of an automobile.

2. Description of the Related Art Conventionally, car stereo speakers are known in which speakers are housed in a box in advance, and in this type of speaker, the box is fixed to a rear storage room.

The advantage of this speaker system is that the speaker mounting surface of the box is tilted so that the sound emitting surface faces the front of the vehicle interior, directing the high-frequency sound forward. Since the internal volume is small and the diameter of the speaker unit itself cannot be made very large, it has the drawback of not being able to obtain sufficient low-frequency sound.

On the other hand, in order to obtain sufficient low-frequency sound, a mounting hole is drilled in the rear storage space, and a large-diameter speaker frame is directly attached to the hole, and the large space behind the rear storage space is used to create a box. type speaker systems are known.

However, there is generally a steel plate-like structure that is part of the vehicle body located very close to the back of the rear storage compartment, and this may become an obstacle to the rear magnetic circuit when installing an embedded speaker. There is.

Therefore, the present applicant interposed a frame-shaped spacer with a certain thickness between the rear storeroom and the speaker frame, allowing only the rear magnetic circuit of the speaker to be exposed to the back side of the rear storeroom. Create a clearance between the
An application has already been filed for a speaker mounting device that substantially increases the internal volume of the box and makes it possible to mount a large-diameter speaker.

However, in this application, the upper and lower surfaces of the spacer on which the speaker is attached are parallel, so if the rear storage stand is horizontal, the sound emitting surface of the speaker faces upward, making it impossible to hear high-frequency sounds sufficiently. There is a drawback.

This idea was developed with 7% consideration given to the points mentioned above, and its purpose was to substantially increase the internal volume of the speaker box to fully reproduce the low frequency range, as well as to use a large-diameter, large-sized speaker box. Even with magnetic circuit speakers, the magnetic circuit on the back of the case can be easily installed without being obstructed by the car's steel plate, etc., without increasing the diameter of the hole drilled in the rear storage stand. An object of the present invention is to provide a spacer for an embedded speaker mounting device that allows sufficient listening to the sound.

Next, an embodiment of this invention will be described with reference to the drawings.

Reference numeral 1 denotes a rear storage stand formed on the back of the rear seat of a vehicle, which is formed horizontally and has a hole 11 at its side end through which a part of the magnetic circuit 21a of a speaker 21 (to be described later) is exposed. A screw insertion hole 12 is bored around 11.

Reference numeral 2 denotes a speaker system, which is composed of a speaker unit 21, a cover 22 that covers the sound emitting surface of the speaker unit 21, and a frame-shaped spacer 23 interposed between the rear storage stand 1 and the speaker unit 21. , spacer 2
3 is a screw 3 whose lower surface is inserted through the screw insertion hole 12.
The speaker unit 21 is fixed to the rear storage stand 1 by screws 4, and its upper surface is simultaneously fixed to the outer periphery of the frame 21b of the speaker unit 21 and the cover 22 placed on the outer periphery of the frame.

The housing spacer 23 has a substantially cylindrical outer peripheral wall, a horizontal lower surface, an upper surface inclined with respect to the lower surface, and a thickness smaller than that of the speaker unit 21 as a whole. The inner surface has a large number of reinforcing ribs 23a, and the ribs 23a are provided with holes 23c that penetrate approximately vertically from the bottom surface, and the screws 3 and 4 are inserted into the holes 23c. : One cylindrical oak (23b) received from above and below is embedded by mold.

The holes 23c are provided at four locations in the circumferential direction.

Therefore, when comparing the diameter of the circle passing through the four holes 23c on the top surface of the spacer and the diameter of the circle passing through the four holes 23c on the bottom surface of the spacer, the diameter of the circle passing through the four holes 23c on the bottom surface of the spacer becomes larger, and this causes the rear storage stand 1 The diameter of the circle passing through the screw insertion hole 12 and the diameter of the hole 11 are reduced, and a large-diameter speaker unit is indirectly attached to the small-diameter hole 11.

To explain the mounting means, first, the spacer 23
align with the opening hole 11 of the rear storage stand 1 so that the upper surface opening slopes forward, and align the hole 23c with the screw insertion hole 12, and insert the screw 3 from the bottom of the rear storage stand 1. The spacer 23 is fixed to the rear storage stand 1 by screwing onto the cylindrical nut 23b.

Next, place the outer periphery of the frame 21b of the speaker unit 21 on the top surface of the spacer 23, and place the cover 22 on top of it. : Place the screw 4 into the hole 23c, screw it onto the top of the cylindrical oak 23b, and fix both to the spacer 23 at the same time.

At this time, a part of the magnetic circuit M21a of the speaker unit 21 obliquely faces into the trunk space on the back side of the rear storage stand 1.

Since the spacer 23 and the trunk are communicated with each other through the hole 11, the substantial area of the interior of the box becomes the trunk and becomes large.

The present invention is a spacer used for mounting an embedded speaker as described above, and in particular, it has a frame shape large enough to surround a hole formed in a mounting plate of a rear storage stand, etc. has a substantially smaller thickness, the upper surface is a mounting surface on which the frame of the speaker unit is placed and fixed, the lower surface is a spacer mounting surface to be placed on the mounting plate, and the upper and lower surfaces are inclined with respect to each other. , a diameter of a circle passing through a plurality of holes on the upper surface through which the frame of the speaker unit is screwed is made larger than a diameter of a circle passing through a plurality of holes on the lower surface through which a spacer is screwed on the mounting plate. do.

Therefore, by using such a spacer, the space behind the rear storage stand can be used as a box without the need for a large speaker box, and it is possible to reproduce sufficient low-frequency sound, and it is also possible to reproduce large-diameter speakers using a large magnetic circuit. Even if it is a speaker unit, it can be easily installed without being obstructed by the car's structural iron plates, etc., and without increasing the overall height. This allows you to fully hear the sound.

What's more, the diameter of the hole drilled in the rear storage stand allows you to attach at most large-diameter speakers, making it easy to upgrade your speaker system.

[Brief explanation of drawings]

The figures show one embodiment of the speaker system according to this invention, with FIG. 1 being a perspective view of the speaker system installed in the rear storage stand of an automobile, and FIG. 2 being a partially cutaway side view. 1... Rear storage stand, 11... Hole, 2.
...Speaker system, 21...Speaker unit, 21a...Magnetic circuit, 23...
···Spacer.

Claims (1)

[Scope of utility model registration request] A frame-shaped spacer of a size that surrounds a hole formed in a mounting plate of a rear storage stand of an automobile, etc., which has a thickness substantially smaller than that of a speaker unit to be attached, and which covers the frame of the speaker unit on the top surface. a mounting surface on which the speaker unit is placed and fixed, a lower surface serving as a spacer mounting surface to be placed on the mounting plate, the upper and lower surfaces being inclined to each other, and a plurality of buttons on the upper surface to which the frame of the speaker unit is screwed A diameter of a circle passing through the holes is made larger than a diameter of a circle passing through a plurality of holes that are drawn on the lower surface to screw the spacer to the mounting plate, and spacer mounting screws are provided on the inner surface of the spacer to attach the spacer to the frame. and a spacer for mounting an embedded type speaker, characterized in that nuts are embedded therein for screwing unit mounting screws for mounting the speaker unit onto the spacer from above and below, respectively.