JPS5932293A - Prism bellow and its manufacture and diaphragm support construction of speaker using bellow - Google Patents

Abstract

PURPOSE:To avoid the variance of rigidity, by making a folding line formed on one surface of a bellows and other surface adjacent to the surface continuous the folding line folded in the opposite direction at corners so as to obtain the sufficient rigidity of the prism bellow. CONSTITUTION:A blank 12 for bellows is press-processed by using a specified press die to form a prallel folding line 25 on the raw material 12 and a wave- shaped folding line 26 prolonged laterally, the part of the folding line 26 is folded into three parts to form a wave-shaped plate 27 by folding the part at the folding line 25. The wave-shaped plate 27 is provided with three surfaces 28, 28' and 29 forming the bellows 30, the folding part 29a of the surface 29 is provided continuously to the folding parts 28a, 28a' of the surfaces 28, 28' and the folding parts 28a, 28a' and 29a are folded in an opposite direction. Two wave-shaped plates 27 are provided, the end of the wave-shaped plate 27 and that of the surface of the other wave-shaped plate 27 are overlapped and adhered to form the bellows 30. The diaphragm 31 is inserted and held between the two bellows 30 to constitute the prism bellows so as to avoid the variance in the rigidity of the bellows 30.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a polygonal cylindrical bellows body, a method for manufacturing the same, and a diaphragm support structure for a speaker using the bellows body.

As shown in Fig. 1, a conventional flat-plate speaker has a frame 2'f: frame 2'f: whose upper and lower ends are open on a base plate 1, a flange 3 along the edge of the opening 11 of the frame 2, and a base plate. 1, two bellows bodies 4, 4f: i are arranged in a white row, the peripheral edge of the diaphragm 5 is sandwiched between these two bellows bodies 4, 4, and a voice is attached to the protrusion 6 of the diaphragm 5. There is one in which a coil (not shown) is wound and a permanent magnet 7 is mounted on the base ffi,1.

For the bellows bodies 4, 4 in this flat speaker, four corrugated plates 8 made of synthetic rubber or sponge are prepared as shown in FIG. 2, and the ends of each corrugated plate 8 are glued together as shown in FIG. It is formed by joining as shown in Figure 4. 9 in the figure indicates the joint i? between the corrugated plates 8, 8? 1;

Such a bellows body 4 is formed into a rectangular columnar shape as shown in FIG. Or,
There was some variation in TlI property. Moreover, if the adhesion of the joint part 9 is incomplete,
As the bellows body 4 expands and contracts, air leaks from the joint 9, causing a problem of sound dropout.

Therefore, the invention of the first cloth is a polygonal prism-shaped snake+1V body that is folded on each side and is stretchable.
The fold line formed at II and the fold line 4°F which is tangent to the -1 river μ..., r and also formed at ■, are folded in opposite directions at the corner r119 of the snake body. By forming a polygonal columnar cylindrical bellows body in which the folding lines are continuous, sufficient rigidity can be obtained, and moreover, it is characterized in that there is no variation in rigidity.

Further, the second invention involves bending one piece of material for a bellows body into two pieces, and folding the two pieces into a wave shape in a direction intersecting the direction in which these pieces are connected, and , at least two or more corrugated bodies are provided in which the folding lines of the two surfaces are continuous with the folding lines folded in opposite directions, and the plurality of corrugated bodies are connected to the corners of the gap where L<i is in contact with each other. FC, 111): liU,! This is characterized by the fact that the body can be manufactured easily and the corrugated bodies can be joined airtightly.

Furthermore, the third invention is a polygonal cylindrical cylindrical snake) complex in which each surface is folded and is stretchable, and the folding line formed at -+m+, and the -F8X11' A bellows body is provided in which the folding lines formed on the other surface of the bellows body are continuous with the folding lines that are folded in opposite directions at the corners of the bellows body, and By removing the diaphragm and making it a 111 and a dynamic pJ f1 structure of the speaker with f = J digit, air does not leak from the corners of the dItJIQ body and sound dropout is prevented. It is characterized by:

Hereinafter, this invention will be explained based on FIGS. 5 to 10.

In FIG. 5, reference numeral 10 denotes a male die 111 for forming waveforms, a glI type for forming waveforms, and 12 a material for the bellows body formed into a flat plate shape from synthetic rubber, sponge, or the like.

M1 type 1 () has two inclined surfaces 1 as shown in Fig. 6.
3.1. :'l' and this Ki oblique 13, 1:3'
1) It has a surface 14 that continues to these at jl l'c. On this ridge 113, a single strip of a protrusion 15 having a substantially triangular shape is formed, and four strips 16 and 16 are formed along both sides of the protrusion 15. 15 is a concave strip 16, 16f: formed between the four strips 16 and 16. Also,
Similar protruding stripes 15' and four stripes 16' are provided on the slope 111113'.
, 16' are formed. Furthermore, the LFU 14 has two protrusions 17, 17 and two protrusions 17, 1.
It has one four jos 18 located between 7. Moreover, each of the protrusions 17 is connected to the grooves 16 and 16', and the groove 18 is connected to the grooves 15 and 15'. Such a convex line 17 and a concave line 16.16' and a concave line 18 and a concave line 15
15' is an obtuse angle as shown in the figure.

The +H1# type 11 also has two inclined surfaces 19 and 19', and a surface 20 connected to these two inclined surfaces 1319'.
・White Jru.

On this slope J19, protruding stripes 21, 21 of the knees having a substantially triangular cross section and four stripes 22 located between the protruding stripes 21, 21 are arranged in parallel. In addition, the inclined surface 191 (- also has similar convex stripes 21', 21' and four stripes 22' forming aC.The surface 20 has two concave strips 23, 23, and the concave strips 23, 23). The protrusions 24 located in between are arranged in parallel.Moreover, the protrusions U are connected to the grooves 22 and 22', and each groove 23 is connected to the protrusions 21' and 21', respectively. The angles formed by such convex lines and concave lines 22, 22', and between the four convex lines 23 and convex lines 21, 21' are formed to be the same as the angles formed by convex lines 17 and concave lines 16 and 16'. .

Next, a method of forming a waveform on the bellows body material 12 using such a male die 10 and a female die 11 will be explained.

When the bellows body material 12 is held between the male die 10 and the female die 11, ball parallel fold lines 25, 25, 25 are formed in the bellows body lugs 12, which extend parallel to the longitudinal direction. At the same time, wavy 111 tatami lines 26, 26 extending in the horizontal direction
is formed (Figure 7). Moreover, each wavy fold line 26
JJ? Curved point 27 Located on Li parallel 1J "Tatami line" 2.

Moreover, at this time, the bellows body material 12 has a wavy folding line 26
．． The corrugated plate 27 formed in this way is folded into five parts from the part 26 and folded into 1t1 (minutes) of the parallel folding lines 25, 25, 25.
is shown in FIG. This corrugated plate 27 has wavy folding lines forming bellows 28 and 29 with 26 as the boundary.
．． 28', and folding parts 28a, 28, 28'.
The folding parts 28a, 28a' and the folding part 29a are folded in opposite directions. Therefore, when this corrugated plate 27 is folded, 28 degrees 28' and 29 are perpendicular to each other as shown in FIG. In addition, the waveform (7/, the corner of 27 is the folding line 26.26
formed along the

Two corrugated plates 27 formed in this way are placed in one place, and the ends of the blood 28, 28 of one corrugated plate 27 and the other corrugated plate 2 are inserted.
By overlapping and bonding the ends of the curves 28' and 28 of No. 7 as shown in FIG. 10, a rectangular prism-shaped bellows body 30 is formed. In this embodiment, the bellows body 30 is shaped like a quadrangular prism, but it is not necessarily limited to this. By changing the angle of the single wave folding line 26,
It is also possible to form a polygonal cylindrical bellows body.

The bellows body 30 with this structure is shown in FIG. By preparing two bellows bodies 30.30 and sandwiching the peripheral edge of the diaphragm 31 of the flat speaker between the open ends of the bellows bodies 30.30, the bellows body 30.30e&i can be used as a supporting portion of the moving plate 31. In this case, even if the bellows body 30.30 expands and contracts, the bellows body 30.30
It is impossible for the air inside to leak from the square part.

As explained above, this first invention is a bellows body in the shape of a polygonal cylinder that is foldable on each side and is expandable and retractable, and has a 111-tatami line formed on the - side and a - Since the polygonal T1 cylindrical bellows body is made up of continuous folding lines formed on the other side adjacent to the stone and folding lines folded in opposite directions at the corners of the bellows body, the rigidity is increased. can be obtained sufficiently, and there is no variation in rigidity.

Further, the second invention is to bend one piece of material for a bellows body into two surfaces, and fold the two... At least two or more stages of corrugated bodies made by connecting two open 1/1 currency wires with JJr windings folded in opposite directions,
Write the wave body of the phase number t3++ll#! Polygonal prism f ridge-like snake ++V which is made to form a bellows body by joining it in a polygonal cylinder shape within 1111 of the angle between one stone that touches
In addition to the method of manufacturing the corrugated body, it is possible to easily produce the corrugated body (2) and to airtightly join the corrugated bodies together.

Furthermore, the third invention is a polygonal cylindrical leech and a membrane body each of which is folded and expands and contracts freely, and a trough line formed in the -1 river, and the -1 river.・A bellows body is provided in which the fold line formed on the other side adjacent to the blood is continuous with the fold lines folded in opposite directions in the corneal body of the bellows body, and the bellows body is The speaker's diaphragm support structure has a diaphragm attached to the open end of the speaker's body, preventing air from leaking from the corners of the bellows body, preventing sound dropouts and noise, and improving rigidity. This can prevent the diaphragm force (o-'J song).

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a conventional flat-plate speaker σ] Figure 2 is a perspective view of the corrugated plate for forming the bellows body shown in Figure 1, and Figure 3 is the waveform shown in Figure 1. Plate σ) Fils remainder l
The perspective view, Figure 4, is the waveform shown in Figure 1.
Figure 5 shows the manufacturing process of the bellows body of this invention.
/) Figure 6 is a perspective view showing the main parts of the male mold shown in Figure 5 (1-1), Figure 7 is Figure 5 (σ) A perspective view of the press mold formed by the press mold. Fig. 8 is a perspective view of the corrugated body formed by the press mold of Fig. 5, and Fig. 9 is a plan view showing the folded state of the corrugated body of Fig. 8. , FIG. 10 is an exploded perspective view showing a bellows body and a diaphragm support structure of a flat speaker according to the present invention. 10...Male type (press type), 11...1llt type ()゛less type), 12...Material for bellows body, 15.15
'...Convex line, 16.16'...Concave line, 17...Convex line, 18...Concave line, 21.21'...Convex line) 22
, 22', 23...concave stripes, moisture...convex stripes, 25...
- Parallel folding line, 26... Wavy folded bamboo line, 27... Corrugated plate, 28.28', 29-... However, 28a, 2
8a', 29a-folding portion, 3()... bellows body, 31
...Vibration plate. Fig. 1 Fig. 2 Fig. 3 Fig. 6 Fig. 13 Fig. 7 2 Procedural amendment valve (voluntary) Showa suspension year'/J12gll Commissioner of the Patent Office 1. Indication of case Patent Application No. 142107 No. 142107 of 1987 2. Invention Name Polygonal cylindrical bellows body, its manufacturing method and its feed; Belly (Book ~
11+5 Imperial Temporary Support Structure 3 of the Speaker Used, Relationship with the Case of the Compensator Special II' Applicant Address: 10-1 Amanuma, Hiratsuka City, Kanagawa Prefecture Name: 11 Sansha Body Co., Ltd. t1-4, Agent: 103 Phone: 669-/142+Address
Supplementary 1F Karizo Specification and Drawing 6, 1110-13-125 Kakigara, Nihonbashi, Chuo-ku, Tokyo Contents of amendment (1) In the specification, page 5, line 13 and line 15, line 11, “
``Convex 15'' is corrected to ``Convex 15''. (2) On page 6, 1st it-ill, “Shijo N'J: 4
:l" has been supplemented with "concave line 24, 2/I J. (3) Page 6, No. 12f-i l-l, No. 131i[l
, 1st fiiillL r convex\') 11 is changed to ``
Supplement 111-S2. l. (4) Same page 6, No. 1; Line 3 I+, No. 1! if71me 2r
+11+ Y: 71+ and J-C) pH "Concave 24" and complement +E. (5) In front of “Saijo 17” on page 6, line 1 [) (-)
``ri(II(su1()σ月tIIIlbesuru.)(6) r +f+i 2ft in the 7th shell, line 19, 11
, 283, t, chrono is corrected as ``Tune S, ;ノ 8'I.
, 2: + Meko:, N・1 Convex stripe" is r22
, 22', Z4 Shijo, 2. ) Convex ridges dE
'l-2+, 3(8) drawing solid 1.1j no 1. Figure 6 and figure '1 are separate from Toriura IIJ-ro.

Claims (3)

[Claims] (1) A polygonal columnar cylindrical body with 111 sides arranged and expandable and retractable, with folding lines formed in the - questions;
- The fold line formed at 11 in addition to v and i in contact with the blood,
A polygonal cylindrical bellows body, characterized in that folding lines folded in opposite directions are continuous at corner portions of the bellows body. (2) One sheet of the material for the bellows body is folded into at least two pieces forming the bellows body, and each surface is folded into a wave shape by 1 knot in a direction intersecting the direction in which these pieces are connected. , provide at least two or more corrugated bodies in which the folding lines of each surface are continuous with the folding lines folded in opposite directions, and the plurality of corrugated bodies are arranged at the corners between adjacent 1M1 in [)11]. n other than part
1. A method for manufacturing a polygonal ring-shaped bellows body, characterized in that the bellows body is formed by joining the polygonal cylinders in the polygonal cylinder shape. (3) A polygonal columnar cylindrical bellows body with each face folded to be expandable and retractable, with a folding line formed on the - face and an extension line adjacent to the - face having 41. At the corner of the bellows body, the folding line is provided with a bellows body in which the folding lines folded in opposite directions are continuous; ': Vibrate to M