JP2001061198A - Loudspeaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a loudspeaker where a length of lead wires of a voice coil wired on a surface of a diaphragm is reduced to the utmost, so as to enhance its outer appearance, a broken lead wire due a split vibration is reduced, and the lead wire of the voice coil and an input terminal are efficiently connected by a tinsel wire. SOLUTION: A lug 13, formed at a base end of a conductive strip terminal member 12, is projected from a rear face in the vicinity of an inner circumference of a diaphragm 8 to a front side and fixed and a lead wire 10 of a vice coil is connected to the lug 13. The vicinity 14 of the tip of the terminal member 12, on the other hand, is press contacted with the rear face of the diaphragm 8 and fixed to keep a gap G between the terminal member 12 and the rear side of the diaphragm 8, the tip 12a is folded at a prescribed angle with respect to the diaphragm 8 and the input terminal 9 fixed to frame 5, and the tip of the terminal member 12 is interconnected by a tinsel wire 10 to configure a loudspeaker 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a speaker,
In particular, the present invention relates to a speaker capable of electrically connecting a voice coil and an input terminal by simple means.

[0002]

2. Description of the Related Art The connection between a lead wire of a voice coil constituting an oscillating system of a speaker and an input terminal for supplying electric power is performed as follows.
Generally, a through hole is formed at an appropriate position of the diaphragm, eyelets are attached to the through hole, and a tinsel wire connected to the eyelet of the eyelet from the back side of the diaphragm is provided at a required portion of the frame. At the same time as connecting to the input terminal, solder one end of the lead wire of the voice coil to the base end of the eyelet exposed on the surface side of the diaphragm, electrically connect both, and then along the surface of the diaphragm Adhesive is applied to cover the leads of the crawling voice coil.

On the other hand, as another lead wire connection structure, Japanese Patent Laid-Open No. 10-336778 discloses a tinsel wire supporting member provided so as to protrude in front of a diaphragm, and guides the tinsel wire to the tinsel wire supporting member. In the loudspeaker having a structure improved in waterproofness, a tinsel wire supporting member is provided on the gasket, the tinsel wire is supported by the tinsel wire supporting member, and is guided from the tip of the tinsel wire supporting member to the vicinity of the terminal lug. A speaker has been proposed in which grooves are provided at predetermined intervals and a hollow portion is provided between two grooves provided in the tinsel wire support member.

[0004]

The above-mentioned general means for connecting the voice coil and the input terminal is because the lead wire of the voice coil exposed on the surface of the diaphragm is fixed to the diaphragm with an adhesive. After the application, it remains on the diaphragm, significantly deteriorating its appearance and making the application of the adhesive an essential means, so it takes time to cure the adhesive, and a separate drying means is required to accelerate the curing While the problem has to be solved in terms of speaker productivity, the voice coil leads are fixed on the diaphragm surface with an adhesive, resulting from the vibration of the diaphragm during speaker operation. Therefore, there are many problems such as the possibility that the lead wire is easily broken and that an abnormal sound may be generated due to the difference in the amount of the applied adhesive.

On the other hand, in the loudspeaker disclosed in Japanese Patent Laid-Open No. Hei 10-336778, the diaphragm vibrates back and forth by inputting a signal. It is necessary to set the length of the speaker so that it can cope with vibration, and it is necessary to provide a hollow part to prevent disturbance of sound pressure characteristics in the tinsel wire support member. It has the disadvantage that it cannot be done.

In view of the above situation, the present invention allows the length of the voice coil lead wire to crawl on the diaphragm surface when the lead wire of the voice coil and the input terminal for supplying power are connected by a tinsel wire. To provide a speaker that is as short as possible, improves appearance, reduces disconnection due to divided vibration, and allows the lead wire and input terminal of the voice coil to be efficiently connected with a tinsel wire. It is something you want to do.

[0007]

In order to achieve the above-mentioned object, a speaker according to the present invention comprises a lug formed on a base end of a conductive strip-shaped terminal member from a back surface near an inner peripheral portion of a diaphragm. The voice coil lead is connected to the protruding lug, and the vicinity of the distal end of the terminal member is fixed to the rear surface of the diaphragm in a press-contact state, and the distal end is fixed with respect to the diaphragm. And the input terminal fixed to the frame and the distal end of the terminal member are connected by a tinsel wire.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a speaker according to the present invention, when connecting a lead wire of a voice coil and an input terminal integrally with a tinsel wire, a terminal member having a specific shape is mounted on the back surface of the diaphragm. A voice coil lead wire is connected to the base end of the terminal member, one end of a tinsel wire is connected to the distal end side, and the other end of the tinsel wire is connected to an input terminal, thereby electrically connecting the voice coil and the input terminal. Are combined.

The terminal member is made of a conductive strip-shaped plate material. The material of the terminal member is not particularly limited as long as it is a conductor, but is preferably a lightweight and moderately elastic material. Varies depending on the size of the speaker to be applied.

The terminal member has a lug at a base end located on the inner peripheral side of the diaphragm for fixing the terminal member to the inner peripheral portion of the diaphragm and for connecting a lead wire of a voice coil. (A protruding portion) and a connecting portion for connecting one end of a tinsel wire for connecting the distal end portion to the input terminal. In order to easily and easily connect one end of the tinsel wire to the terminal member, For example, it is preferable to form cut grooves on the left and right side edges at appropriate positions of the distal end portion, and to bend both side edges on the distal end side into an arc shape from this cut groove to form a connection portion for a tinsel wire. There is no particular limitation on the shape of.

Further, in order to keep the position of the tinsel wire to be connected constant, it is preferable to form a stopper by cutting and raising at a required position on the tip end side of the terminal member, thereby forming the cylindrical connection portion. In such a case, it is desirable to be on an extension of the axis of the connecting portion on the base end side.

When the terminal member is mounted on the diaphragm, a hole having a shape corresponding to the lug formed at the base end of the terminal member is formed near the inner peripheral portion of the diaphragm, and the terminal is inserted from below the hole. The lug of the member is inserted, the upper part of which is brought into contact with the surface of the diaphragm by means such as bending, and the base end of the terminal member is fixed to the diaphragm by fixing to the surface of the diaphragm.

At this time, the position of the hole formed near the inner peripheral portion of the diaphragm for inserting the lug of the terminal member is determined when the lug is brought into contact with the surface of the diaphragm by means such as bending.
By providing all of the bent lugs at a position located on the diaphragm, the terminal member can be mounted on the diaphragm without impairing the strength of the diaphragm. When the terminal member is fixed to the back surface of the diaphragm, the lead wire of the voice coil is soldered to the lug by fixing the terminal member so that a required gap can be formed between the terminal member and the diaphragm. In this case, it is possible to prevent the diaphragm from being damaged by heat generated by the soldering operation.

In this terminal member, after bending the vicinity of the base end to the side opposite to the diaphragm, the center of the terminal member is bent toward the diaphragm in a mountain shape or an arc shape, and the vicinity of the distal end of the terminal member is bent. The lug at the base end is formed on the inner periphery of the diaphragm by forming it so as to be in contact with the rear surface of the diaphragm in a pressure-contact state and bending the distal end away from the diaphragm at a required angle. When fixed, the vicinity of the distal end of the terminal member is pressed against a required portion on the back surface of the diaphragm, and the pressed portion is fixed with an adhesive or the like, so that the terminal member mounted on the back surface of the diaphragm causes a resonance phenomenon. Can be prevented.

The distal end of the terminal member is bent downward at a predetermined angle with respect to the diaphragm so as not to be in contact with the back surface of the diaphragm, so that the tinsel wire connected to the distal end is vibrated by the diaphragm or the diaphragm. It is possible to prevent contact with the damper and prevent generation of abnormal noise.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the speaker according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a main part of a speaker 1 of the present invention, wherein 2 is a bottom yoke constituting a magnetic circuit, 3 is a ring-shaped magnet, 4 is a top plate, 5 is a frame, and 6 is a bobbin of a voice coil. ,
7 is a damper for holding a bobbin 6 having one end fixed to the frame, 8 is a cone-shaped diaphragm having an outer peripheral portion fixed to the upper end portion of the frame 5 and an inner peripheral portion fixed to the upper end portion of the bobbin 6, respectively. 9 is an input terminal provided at a required portion of the frame 5, 10 is a lead wire of a voice coil wound around the bobbin 6, 11 is a tinsel wire having one end connected to the input terminal 9, and 12 is the lead wire 10. And a terminal member for integrally connecting the tinsel wire 11 and the tinsel wire 11.

The terminal member 12 is made of an iron strip having a width of about 5 mm and a thickness of about 0.5 mm.
As shown in FIG. 3, a cylindrical lug 13 having a diameter of about 2.5 mm is integrally provided on the surface of the base end near the inner peripheral portion of the diaphragm 8 and the vicinity of the tip is vibrated. The whole is bent into an inverted mountain shape so as to be in pressure contact with the back surface of the plate 8, and the pressure contact portion 1 is formed.
4 and a cylindrical holding portion 15 for connecting a tinsel wire 11 having one end connected to the input terminal 9 at the front end thereof.
And 16 is a stopper for holding the tinsel wire 11 at a predetermined position.

As shown in FIG. 1, the terminal member 12 having such a structure first inserts and holds one end of the tinsel wire 11 of a required length in the holding portion 15 of the terminal member 12, and fixes it by soldering if necessary. After that, the hole 8 formed near the inner peripheral portion of the diaphragm 8
a through a cylindrical lug 13 protruding from the surface of the base end from below (the back side of the diaphragm 8), and caulking the lug 13 protruding to the front side with an appropriate tool to attach the terminal member to the diaphragm 8. 12 is fixed.

When the terminal member 12 is fixed to the diaphragm 8, a predetermined gap G is formed between the back surface of the diaphragm 8 and the terminal member 12, so that the lug 1 of the terminal member 12 is formed.
When soldering the lead wire 10 of the voice coil 3 to the diaphragm 3, it is possible to minimize the adverse effect of the heat generated by the soldering operation on the diaphragm 8.

Further, since the terminal member 12 is formed in an inverted mountain shape with its central portion as a vertex, the vicinity of the distal end of the terminal member 12 is pressed against the back surface of the diaphragm 8, and the pressure contact portion 1 is pressed.
The diaphragm 8 and the terminal member 12 are integrally fixed by applying an adhesive to both ends of the terminal member 4.
2 prevents the resonance phenomenon from inducing a resonance phenomenon, and then solders the tip of the lead wire 10 of the voice coil to the crimped lug 13 so that the lead wire 1 protruding along the surface of the diaphragm 8.
The adhesive 10 is applied to fix the lead wire 10 of the voice coil to the diaphragm 8.

In the speaker 1 of the present invention,
Since the lug 13 formed on the terminal member 12 is provided near the inner peripheral portion of the diaphragm 8 and provided on the diaphragm 8, the lead wire 10 of the voice coil along the diaphragm 8 can be extremely short, and the vibration can be reduced. The portion of the lead wire 10 (fixed with an adhesive) of the voice coil that appears on the surface of the plate 8 can be easily hidden by a dust cap (not shown).

On the other hand, in order to connect the tinsel wire 11 whose one end is held by the holding part 15 of the terminal member 12 to the input terminal 9, the tinsel wire 11 is connected to the vibration plate 8 or the damper 7 when the diaphragm 8 operates. The tip 12a is bent at a required angle with respect to the back surface of the diaphragm 8 so as not to contact with the diaphragm 8 and is connected thereto.

FIG. 4 shows another terminal member 22 used in the speaker according to the present invention. The terminal member 22 is provided along both sides of the base end portion of a strip having a required width and length having conductivity and lightness and elasticity. Plate-like lugs 23a and 23b are integrally erected upward, and a holding portion 25 for holding the tinsel wire 21 is formed on the back surface of the distal end portion. A pair of slits (not shown) corresponding to the plate-like lugs 23a and 23b are formed at required positions near the inner peripheral portion, and the lugs 23a and 23b are inserted through the slits from the back surface of the diaphragm 18 to vibrate. After the lugs 23a and 23b projecting from the surface of the plate 18 are bent along the diaphragm 18 and fixed to the diaphragm 18, either lug 23a or 23b is bent.
a or 23b soldered to a lead wire 20a of a voice coil, and the terminal member 22 is also formed such that a substantially central portion of the band-shaped plate is curved, and a portion 22a near the distal end portion is pressed against the back surface of the diaphragm 18. It is.

In this embodiment, the terminal member 1
Although 2 is described as one, usually there is a plus and a minus, so a pair is required. Further, the attachment of the terminal member 12 or 22 to the diaphragm and the connection between the tinsel wire or the lead wire of the voice coil and the terminal member are not limited to the embodiment, but are formed at the base end of the terminal member. The lug can be attached to the diaphragm at the base end of the terminal member, and the shape is not particularly limited as long as the shape can be connected to the voice coil lead wire on the surface of the diaphragm. It is natural that the shape of the holding portion for the tinsel wire formed on the terminal member is not limited as long as the tinsel wire can be substantially connected.

[0025]

According to the speaker of the present invention, the lug formed on the surface of the base end portion is inserted from below the hole provided in the vicinity of the inner peripheral portion of the diaphragm so as to protrude toward the surface side of the diaphragm. By fixing the lug on the diaphragm by the above, the terminal member is fixed to the vicinity of the inner peripheral portion of the diaphragm, and the vicinity of the front end portion is pressed against the back surface of the diaphragm to fix the terminal member. The terminal member mounted on the back surface of the diaphragm is prevented from resonating by preventing the resonance phenomenon of the terminal member due to the above, pressing the vicinity of the tip of the diaphragm against the back surface of the diaphragm, and fixing the pressed portion with an adhesive or the like. To prevent the end of the terminal member from being bent and held at a required angle with respect to the back surface of the diaphragm. If the wire is a diaphragm or It is possible to prevent the occurrence of abnormal noise due to contact par.

In particular, in the speaker according to the present invention, the lug of the terminal member for connecting to the lead wire of the voice coil is located near the inner peripheral portion of the diaphragm, so that the lead wire of the voice coil is shortened. As a result, disconnection due to the divided vibration of the diaphragm can be reduced as much as possible, and the appearance of the speaker can be improved, the amount of adhesive used and the time required for curing can be greatly reduced, and It is extremely simple and easy to mount, so that a high-performance speaker can be provided at a low cost, and this has a great effect in practical use.

[Brief description of the drawings]

FIG. 1 is a half sectional view showing an example of a speaker of the present invention.

FIG. 2 is a sectional view showing an example of a terminal member applied to the speaker of the present invention.

FIG. 3 is a bottom view of the terminal member in FIG. 2;

FIG. 4 is a perspective view showing another example of the terminal member applied to the speaker of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Speaker 5 Frame 7 Damper 8 Diaphragm 9 Input terminal 10 Lead wire of voice coil 11 Kinshi wire 12 Terminal member 13 Lug 14 Pressure contact part 15 Holding part of Kinshi wire 16 Stopper

Claims (6)

[Claims] 1. A lug formed at a base end of a strip-shaped terminal member having conductivity is projected from a back surface near an inner peripheral portion of a diaphragm to a front surface side and fixed, and a lead of a voice coil is attached to the projected lug. While being connected, the vicinity of the distal end of the terminal member is fixed to the back surface of the diaphragm in a press-contact state, and the distal end is bent at a predetermined angle with respect to the diaphragm to secure the input terminal fixed to the frame and the distal end of the terminal member. The speaker is characterized by being connected with a tinsel wire between the parts. 2. The speaker according to claim 1, wherein the terminal member is lightweight and elastic. 3. The terminal member according to claim 1, wherein a lug is formed at a base end of the conductive strip having a light weight and elasticity, the lug being in contact with a surface near an inner peripheral portion of the diaphragm, and a back surface of the diaphragm is formed near a tip. 3. The speaker according to claim 1, further comprising: a press-contact portion for press-contacting the end portion, and a holding portion for holding one end of a tinsel wire connected to the input terminal at a distal end portion. 4. 4. The loudspeaker according to claim 3, wherein the lug is a cylindrical protrusion or a plate-like protrusion made of a cut-and-raised piece formed at a base end of the terminal member. 5. A required gap is formed between the diaphragm and a lug when a part of the terminal member is fixed to the back surface of the diaphragm.
Speaker. 6. The loudspeaker according to claim 1, wherein the tip of the terminal member is capable of freely changing an angle with respect to a back surface of the diaphragm within a predetermined range.