JP4120568B2 - Speaker and manufacturing method thereof - Google Patents

Description

  The present invention relates to a speaker used in various audio equipment and a method for manufacturing the same.

  The speaker terminal connected to the audio signal amplification unit on the device side is increasingly provided from the front surface of the speaker for ease of connection with the device.

  This conventional speaker will be described with reference to FIGS.

  FIG. 4 is a half sectional view of a conventional speaker, FIG. 5 is a top view showing a state in which the diaphragm is viewed from the top, and FIG. 6 is a flexible wire to the relay part which is the main part. It is a perspective view of the relay part explaining attachment of A.

  According to the figure, 7 is a magnetic circuit comprising a lower plate 7b having a center pole, an annular magnet 7c, and an upper plate 7d, and 1 is a plastic frame coupled to the upper part of the magnetic circuit 7. Is a voice coil comprising a wire ring fitted in the magnetic gap 7a of the magnetic circuit 7 and a voice coil bobbin wound around the wire ring. Reference numeral 4 denotes an inner circumference coupled to the voice coil 3, and an outer circumference coupled to the frame 1. Reference numeral 5 denotes a damper that supports the voice coil 3. Reference numeral 5 denotes a diaphragm having an outer periphery coupled to the frame 1 via an edge portion and an inner periphery coupled to the voice coil 3.

  Reference numeral 2 denotes a speaker terminal attached to the frame 1, and a connector connected to an audio signal amplifying unit (not shown) is inserted into the housing 2a. Reference numeral 2b denotes a terminal plate that is press-fitted or outsert-molded into the casing 2a connected to the connector. Reference numeral 8 denotes a relay portion attached to the frame 1, and a flexible wire 6 for connecting the terminal of the wire ring of the voice coil 3 and the terminal 2 is inserted and sandwiched from both sides into the holding portion 8a, and along the groove portion 8e of the wall 8b. Therefore, when the speaker is driven (the voice coil 3 moves up and down), it is arranged at an appropriate spatial position where it does not come into contact with the diaphragm 5 or the damper 4 to generate abnormal noise.

As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2000-324596 A

  However, in the above-described speaker, in order to clamp and fix the flexible wire 6 to the relay clamping unit 8a, it is necessary to fit the respective clamping units from different sides. In order to follow the groove 8e in the wall 8b, the flexible wire 6 has to be corrected, which increases the cause of the occurrence of defects due to variations in insertion work.

  The present invention provides a speaker that has a relay fixing portion that solves the above-described problems and is easy to assemble.

  In order to solve the above-mentioned problem, the speaker according to claim 1 of the present invention is characterized in that the relay portion has two wall portions facing the speaker terminal side and the voice coil side through a central groove, and the voice coil side. A pair of guide grooves provided in the wall portion, a central wall provided substantially at the center of the wall portion on the speaker terminal side, and an opening provided below the central wall side provided on both sides of the central wall. By configuring the flexible wire with the clamping part, it is possible to easily move the flexible wire arranged above by moving the flexible wire downward, so that the flexible wire can be incorporated into the speaker. This makes it possible to provide a speaker having an easy assembling workability.

  According to a second aspect of the speaker of the present invention, the pair of guide grooves provided on the voice coil side wall according to the first aspect is formed in a V shape, and the guide grooves are formed in a V shape. Therefore, even if there is a slight misalignment, the guided flexible wire can be reliably and easily placed on the bottom of the guide groove or in the vicinity thereof, and the flexible wire can be easily positioned, The collision between the damper and the flexible wire is suppressed, and the generation of abnormal noise and the damage of the flexible wire are suppressed.

  The speaker according to claim 3 of the present invention is such that the skirt of the central wall according to claim 1 is continuous to the opening of the sandwiching portion, the vicinity thereof, or the inside of the sandwiching portion, and is disposed above. By moving the flexible wire downward, it is possible to easily guide to the clamping portion, and the flexible wire can be reliably incorporated with good workability.

  According to a fourth aspect of the speaker of the present invention, a flat portion is provided outside at least a central groove of the speaker according to the first aspect and a wall portion on the speaker terminal side. While holding the flexible wire, the flat part is directed from the opening of the sandwiching part to the back side (each outward from the center side), and the jig can be easily used by sliding the flexible wire holding jig. It is possible to provide a speaker having a configuration that contributes to automatic assembly in which the flexible wire can be arranged in the holding portion.

  According to a fifth aspect of the speaker manufacturing method of the present invention, in the state in which the upper portion of the flexible wire is hooked on the concave portion of the pair of projecting pieces provided with the concave portion at the tip. The speaker according to claim 4, wherein the flexible wire and / or the projecting piece are pressed against the two flat portions and are brought into sliding contact with each other to guide the flexible wire to the inside from the sandwiching portion opening. In assembling, a workability of a flexible wire having flexibility is improved, and a speaker manufacturing method capable of mechanical assembly is provided.

  As described above, the speaker of the present invention has a structure in which the flexible wire connecting the terminal and the voice coil can be easily fixed to the relay portion, and the assembly workability of the relay portion can be easily performed. In addition to being good, it is possible to provide an excellent speaker that prevents the generation of abnormal noise due to the collision with other components (damper, diaphragm) due to the amplitude of the flexible wire when the speaker is driven.

  Hereinafter, an embodiment of the speaker of the present invention will be described with reference to FIGS. In addition, the same number is attached | subjected to the part same as a prior art, and description is abbreviate | omitted and demonstrated.

(Embodiment 1)
FIG. 1 is a perspective view of an assembling state in which a flexible wire is arranged in an embodiment of the speaker of the present invention as viewed obliquely from above, FIG. 2 is a perspective view of a relay part that is the main part, and FIG. It is a top view of the relay part vicinity which is the principal part.

  Only differences from the prior art will be described with reference to the figure. Reference numeral 11 denotes a relay unit, which corresponds to the relay unit 8 of the prior art.

  The relay portion 11 is integrally formed with the plastic frame 1 (the relay portion may be provided separately by plastic molding or the like and attached to the frame 1).

  Further, the relay portion 11 is provided in such a manner that the wall portion 11b on the speaker terminal 2 side and the wall portion 11c on the voice coil 3 side face each other with a flat central groove 11a therebetween, and the wall portion 11c on the voice coil 3 side. The inside is provided with an inclination, and further, a pair of V-shaped guide grooves 11d is formed.

  Further, the relay portion 11 includes a conical central wall 11e provided at the approximate center of the wall portion 11b on the speaker terminal 2 side, and a central wall 11e provided on both sides of the central wall 11e. A holding part 11f for positioning the flexible wire 6 provided with an opening 11g below and a flat part 11h provided along the wall part 11b are formed outside the wall part 11b on the speaker terminal 2 side.

  The flexible wire 6 is lifted to an appropriate position along the V-shaped guide groove 11d, and the flexible wire 6 collides with the diaphragm 5 or the damper 4 due to the abnormal amplitude of the speaker 5 to generate noise when the speaker is driven. Since the position is set by the wall portion 11c so as to form an arcuate curve so as to be arranged at a position where no bending occurs, and each flexible wire 6 runs along each guide groove 11d, it is insulated. This prevents the flexible wires 6 that are not in contact with each other.

  The central wall 11e of the wall portion 11b also has a similar contact preventing function.

  Next, the procedure for positioning the flexible wire 6 to the relay portion 11 will be described. The flexible wire 6 cut to a predetermined length is moved from the upper side to the lower side along the central wall 11e, and the holding portion 11f Insert from the opening 11g. The flexible wire 6 is not a single wire, but is formed by knitting a plurality of conducting wires or the like, and is provided with irregularities on the surface, so that it does not come out of contact with the corners of the sandwiching portion 11 and to be pulled slightly. become.

  At this time, the flexible wire 6 that rides on the wall portion 11c is bent along the inclination of the wall portion 11c and arranged along the bottom of the V-shaped guide groove 11d.

  As described above, the connection with the voice coil 3 and the position of the flexible wire 6 connected with the speaker terminal 2 are specified by the sandwiching portion 11 f and the wall portion 11 c of the relay portion 11.

  In addition, it is also possible to make insertion of the flexible wire 6 into the clamping part 11f easier by extending the skirt of the central wall 11e to the opening 11g, the vicinity thereof, or the back of the clamping part in the opening.

  The speaker configured as described above contributes to automation (mechanization) of speaker assembly.

  That is, as shown in FIG. 1, a flexible wire 6 (cut to a predetermined length and held so as to be movable downward by means not shown) disposed above the relay portion 11 is inserted into a V-shaped recess 12b. The flexible wire insertion jig (not shown) having a pair of plate-like projecting pieces 12a provided with a recess 12b is hooked on the concave portion 12b. Are moved down to contact with the flat portion 11h, and then the central groove 11a and the flat portion 11h are slid over the concave portions 12b so that the flexible wire 6 is moved further from the opening 11g of the holding portion 11f. By making contact, the flexible wire 6 can be placed on the relay portion 11 very easily by the flexible wire insertion jig.

  As described above, the speaker of the present invention has a structure in which the flexible wire connecting the terminal and the voice coil can be easily fixed to the relay portion, and the assembly workability of the relay portion can be easily performed. In addition to being good, it is possible to provide an excellent speaker that prevents the generation of abnormal noise due to the collision with other components (damper, diaphragm) due to the amplitude of the flexible wire when the speaker is driven.

The perspective view which looked at the assembly condition which arrange | positions the flexible wire in one embodiment of the speaker of this invention from diagonally upward The perspective view of the relay part which is the principal part Top view near the relay section Half sectional view of a conventional speaker Top view with the diaphragm removed from the top The perspective view of the relay part explaining the attachment of the flexible wire to the relay part which is the principal part

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 2 Speaker terminal 2b Terminal board 3 Voice coil 6 Flexible wire 11 Relay part 11a Central groove 11b, 11c Wall part 11d Guide groove 11e Central wall 11f Holding part 11g Opening 11h Flat part 12a Protrusion piece 12b Recessed part

Claims (5)

At least one end is connected to the terminal of the voice coil wire ring and the other end is connected to the terminal plate of the speaker terminal provided on the frame, and the frame is integrated or separated between the voice coil and the speaker terminal. A speaker constituted by a relay part provided by attaching the body to the frame, wherein the relay part is opposed to the speaker terminal side and the voice coil side through a central groove; , A pair of guide grooves provided in the wall portion on the voice coil side, a central wall provided in the approximate center of the wall portion on the speaker terminal side, and an opening below the central wall side provided on both sides of the central wall And a sandwiching portion for positioning the flexible wire. The speaker according to claim 1, wherein the guide groove is V-shaped. The speaker according to claim 1, wherein the skirt of the central wall is continuous to the opening of the clamping part, the vicinity thereof, or the inside of the clamping part. The speaker according to claim 1, wherein a flat portion is provided at least outside the central groove and the wall portion on the speaker terminal side. 5. The flexible wire and / or the protruding piece on the two flat portions of the speaker according to claim 4, in a state where the upper portion of the flexible wire is hooked on the recessed portion of the pair of protruding pieces provided with a recessed portion at the tip. A speaker manufacturing method in which the flexible wire is guided and arranged in the inside from the opening of the sandwiching portion by pressing and sliding.

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