JPH0129916Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to the structure of upper and lower packings that sandwich the diaphragm of a horn speaker driver.

(Conventional Examples and Problems) Conventionally, a structure has been known in which the structure of a horn speaker driver is divided into a plurality of units to greatly simplify assembly and facilitate repair. For example, as shown in FIG. So first unit 1
A center pole 5, a bottom plate 6, a magnet 7, and a bridge 8 constitute a magnetic circuit portion. The outer periphery of the bridge 8 fits into a bent piece on the outer periphery of the throat portion 3, which will be described later, and is useful for accurate positioning of the throat portion 3. The second unit 2 includes a diaphragm plate in which a bobbin 9, a voice coil 10, a diaphragm 11, a damper 12, and a peripheral mounting portion 13 are integrally formed, and the peripheral mounting portion 13 are sandwiched together by packing or the like. Top and bottom packing 1
4 and 15. The bobbin 9 and the voice coil 10 are integrated with adhesive during the voice coil winding operation, and the bobbin 9 and the diaphragm 11 are also bonded together. The leads of the voice coil 10 are led out to a connector 16 on the periphery of the packing via tinsel wire or phosphor bronze pieces (not shown) between the upper and lower packings 14 and 15. The bobbin 9 and the upper and lower packings 14 and 15 are accurately positioned. That is, it is centered. Upper and lower packing 14 and 15
is integrated with the vibrating member by adhesive. The outer peripheral edges of the upper and lower packings 14 and 15 are formed to match the inner periphery of the bent piece of the throat portion 3, which will be described later. The third unit 3 is a throat portion consisting of a throat 17 and an equalizer 18. Around the throat 17 are a magnetic circuit part 1 and a diaphragm part 2.
It is integrally provided with a bent piece 19 whose center coincides with that of the bent piece 19. The inner circumference of the bent piece 19 coincides with the outer circumference of the packings 14 and 15 and the outer circumference of the bridge 8.

Therefore, place the diaphragm part 2 while inserting the bobbin 9 into the magnetic space of the magnetic circuit part 1, and then insert the bent piece 19.
Packing 14, 15 and bridge 8 on the inside of
Assemble the horn speaker driver by covering the throat part 3 so that the

Upper and lower packing 14, 15 of the above-mentioned diaphragm part 2
Since it is fixed with adhesive, it is necessary to align the vibrating member and the upper and lower packing and apply the adhesive at the same time, and it is also necessary to fix the position of each member so that it will not shift until the adhesive hardens. There is.

(Purpose of the invention) The present invention eliminates the troublesome assembly of the conventional example,
This further simplifies assembly.

(Embodiment) In the present invention, the upper and lower packings 14 and 15 have chord parts 21 to 24 formed by cutting out circular arcs on four sides, as shown in FIGS. 2 and 3. The packings 14, 15 are made of plastic material, and the string section 21 is provided with a thin, bendable connecting section 25. The connecting portions 25 are made of thin and small members, and two connecting portions 25 are provided in the string portion 21. Lower packing 14
The other string parts 22 to 24 are provided with two male hook parts 26 to 28, respectively. The male hook part has a claw-like shape. The claw is designed to be hooked on the thickness of the upper packing 15.

Therefore, in the present invention, the vibration member is attached to the lower packing 14.
Place it on top and center it using a jig etc.
Apply adhesive. Next, bend the upper packing 15 and hook the nail to the upper packing. In this way, the diaphragm portion 2 is assembled. This diaphragm part 2
is an arcuate portion without a notch and is centered on the inner periphery of the bent piece 19 of the throat portion.

(Other Embodiments) The male hook portion may have a mushroom-like protrusion 31 as shown in a cross-sectional view in FIG. 4, and the female hook portion may have a hole 33.

In the above embodiment, the chord part is formed by cutting out the circular arc, but the connecting part and the hook part may be formed in the circumferential part without forming the notch. However, in this case, Packing 1
Since the bulges of the connecting part and the hook part are formed on the circumferences of the parts 4 and 15, it is necessary to provide an escape in the throat part 3.

(Effects of the idea) The upper and lower packings are connected by a connecting part, making it easier to handle the parts. Also, upper and lower packing 1
The work of centering the vibrating member and applying adhesive to parts 4 and 15 becomes easier, and work errors are reduced.

[Brief explanation of drawings]

Fig. 1 is an exploded sectional view of the driver portion of a conventional horn speaker, Fig. 2 is a plan view of the upper and lower packings that constitute the horn speaker driver of the present invention, and Fig. 3 is a perspective view of the same part as Fig. 2. Figure, 4th
The figure shows a sectional view of a main part of another embodiment of the present invention. 2 is the diaphragm part, 21-24 is the string part, 26-
28 indicates a claw.

Claims (1)

[Claims for Utility Model Registration] 1. A horn speaker driver having a structure in which the peripheral edge of the diaphragm of the horn speaker is sandwiched between an upper packing and a lower packing to center the voice coil bobbin and the upper and lower packing. At least one part of the upper packing and the lower packing are connected by a bendable connecting part, and one of the packings is provided with a male hooking part, and the other packing is provided with a female hooking part, and the connecting part is bent. A horn speaker driver characterized in that the male hook portion is engaged with the female hook portion. 2. The horn speaker driver according to item 1, wherein the connecting portion, the male hooking portion, and the female hooking portion are provided in the string portions of the upper and lower packing having circular arc notches.