JP2001118625A - Terminal connector and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple method to produce a terminal 15 and provide a terminal connector where the manufacturing cost is suppressed low. SOLUTION: A terminal 15 that is the main portion of terminal connector is composed of a terminal body 59 and a finger grip 19, and this terminal body 59 is composed of a bottom portion 60, two sheets of plate portions 61 that are standing from the front and back of the bottom 60 and that face each other with the appointed interval and compose plug connection portion 23, and a screw portion 17, and this is formed from one piece of electro-conductive metal plate by press working and others such as punching, perforating, folding, screw work, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal connector used for inputting / outputting a speaker terminal and other electric signals in audio equipment, TVs, and the like, and a method of manufacturing the same.

[0002]

2. Description of the Related Art Generally, this kind of terminal connector is shown in FIG.
As shown in (1), it is composed of an insulating substrate 10, a terminal plate 14 made of a conductive metal, and a terminal 15.
The insulating substrate 10 has an upper surface (the terminal 15
The knob 19 is provided with a lead wire insertion notch 12 and a tubular portion 11 for preventing short-circuit of the lead wire is provided at the center of the tubular portion 11. A through-hole 13 is formed for the portion 17 to advance and retreat, and a terminal plate 14 is located on the outer periphery of the through-hole 13.
Are formed with a plurality of insertion holes 20 for fitting.

The terminal portions 22 of the terminal plate 14 and the press-fitting locking pieces 21 are press-fitted into the plurality of insertion holes 20 from above, respectively, and fixed.

As shown in FIG. 6 (b), the terminal 15 is formed by covering an insulating knob 19 on one lower end of a terminal body 59 made of a conductive metal. 7 is screwed into the screw hole 16 of the terminal plate 14 as shown in FIG.
A lead wire (not shown) is sandwiched between and electrically connected to the upper surface of the terminal plate 14, or a banana plug (not shown) is inserted into the plug connection portion 23 of the terminal 15, and the electrical connection is established. Connect to

In such a terminal connector, as shown in FIG. 6A, a terminal main body 59 of the terminal 15 is conventionally provided with a cylindrical plug connection portion 23, a flange portion 18,
It consisted of a threaded portion 17 and was simultaneously formed by cold forging. The processing of the screw portion 17 which cannot be performed by the cold forging method, and the notch portion 2 as a detent
The notch 8 is performed in a later step.

[0006]

The conventional terminal body 59 shown in FIG. 6A has the following problems since it is manufactured by a cold forging method. The cold forging method forms a necessary and sufficient conductive metal material by squeezing between molds at a temperature lower than the recrystallization temperature, so it can be formed without chips and has excellent product dimensions and strength. Requires less impurities, requires a pretreatment step,
There are problems such as the necessity of using a tool that can withstand high pressure and the need for experience and man-hours in manufacturing. As a result, there is a problem that the manufacturing cost is high. Further, since the cold forging method is a very special method, the factories and the like where the terminal body 59 can be manufactured by this method are very limited. Terminal body 59 of this type of terminal 15
Is created by a method other than cold forging, that is, a method of cutting solid material, divided into at least three parts,
Although it is possible to manufacture each part by a method of assembling or welding, it has a problem that the number of parts is increased, processing and assembling are troublesome, and the cost is rather increased.

According to the present invention, in order to solve the above-mentioned problems, a method other than the cold forging method is used in manufacturing the terminal 15 so that the manufacturing cost can be further reduced and the number of parts is not increased. It is an object of the present invention to provide a terminal connector which can be manufactured by a simple method and a manufacturing method thereof.

[0008]

SUMMARY OF THE INVENTION The present invention relates to an insulating substrate 1;
0, a terminal plate 14 is attached to the terminal plate 14, and a terminal 15 is screwed into the terminal plate 14. The terminal 15 includes a terminal body 59 and a knob 19. A bottom portion 60 for holding a lead wire between the plug connection portion 2 and a plug connection portion 2
The terminal body composed of two plate-shaped portions 61 constituting the base member 3 and the screw portion 17 provided on the bottom portion 60 and screwed to the terminal plate 14 is formed by pressing one conductive metal plate or the like. By punching, drilling, bending, etc., the bottom,
Each part such as a screw part and a plug connection part is formed, and further formed by screw processing.

[0009]

The screw portion 17 of the terminal 15 thus formed is screwed into the screw hole 16 of the terminal plate 14 fixed to the insulating substrate 10. Then, between the lower surface of the bottom portion 60 and the upper surface of the terminal plate 14, a lead wire can be sandwiched and electrically connected. In addition, a banana plug is inserted into the plug connection portion 23, so that electrical connection can be made. Further, the terminal body 59
Since the bottom portion 60 is formed by pressing, it can be easily formed in a non-circular shape, the knob 19 does not idle, the terminal body 59 and the knob 19 are firmly fixed, and the terminal 15 is connected to the terminal plate 14. The lead wire can be screwed forward and backward to securely clamp the lead wire.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First to fifth embodiments of the present invention will be described with reference to FIGS. 6 and 7 showing the conventional example are denoted by the same reference numerals.

First Embodiment (FIG. 1) The terminal 15 in the first embodiment comprises a terminal body 59 and a knob 19.
9 includes two front and rear flat plates,
And a bottom portion 60 and a screw portion 17. The screw portion 17 is inserted and fixed in a screw insertion hole 62 formed in the bottom portion 60. The processing steps of the first embodiment will be described below.

(1) Punching and Drilling Step A metal plate made of a conductive material is pressed into a metal plate as shown in FIG.
As shown by the two-dot chain line in (a), in order to form the central bottom portion 60 and the subsequent plate-like portions 61 before and after, a substantially rectangular shape is punched out, and at the same time, a circle is formed in the center of the portion to be the bottom portion 60. The screw insertion hole 62 is formed. Also, the front and rear plate-shaped portions 6
1, a serrated locking claw 6 such that the terminal main body 59 is press-fitted and fixed to the knob 19.
3 are simultaneously formed by punching.

(2) Folding process Both sides are bent upward by 90 degrees as shown by a solid line in FIG. Are made to face each other. These two
The inner wall surfaces of the plate-shaped portions 61 serve as plug connection portions 23 for inserting and connecting banana plugs. Therefore, 2
The interval between the front and rear plate portions 61 is slightly smaller than the diameter of the banana plug.

(3) Mounting Step of Screw Section As shown in FIG. 1A, the screw section 17 which has been prepared in advance is inserted into the screw insertion hole 62, and the screw head 64 is attached to the bottom section 60.
Weld on top of The screw head 64 has an oval shape in which both sides of the disk are cut straight out so as to match the width of the bottom portion 60. The oval shape provides a retaining and detent effect. The method for attaching the screw head 64 to the bottom 60 is not limited to welding, but may be adhesion, pressure bonding, or the like.

(4) Step of assembling terminal body 59 and knob 19 The terminal 15 is formed by covering the terminal body 59 with the knob 19 and integrally fixing the same. Knob 19
As shown in FIG. 1B, a press-fit groove 65 for fitting the two front and rear plate-shaped portions 61 of the terminal body 59 is formed from below, and the plug insertion port 26 is formed from above.
Is formed in advance. When the front and rear plate-shaped portions 61 are press-fitted into the press-fitting grooves 65, the locking claws 63 are press-fitted into the groove walls of the press-fitting grooves 65 and fixed. In the terminal 15 assembled in this way, the plug connection portion 23 is formed by the inner wall surfaces of the two front and rear plate-shaped portions 61, and a banana plug is inserted from the plug connection hole 26 to be electrically connected. Can be. Also, the bottom 60 of the terminal 15 is substantially flush with the bottom surface of the knob 19 and serves as a connecting surface for sandwiching lead wires. Here, electrical connection is established by sandwiching the lead wires.

Second Embodiment (FIG. 2) In the first embodiment, the shape of the metal plate punched by press working is a substantially rectangular shape having only the bottom portion 60 and the front and rear plate portions 61. In the second embodiment, the shape of the metal plate constituting the terminal body 59 is changed as shown in FIG.
As shown in FIG.
1 and a substantially cross shape having left and right plate portions 70. In this case, the front and rear plate portions 61 are formed so as to be longer than the left and right plate portions 70, and a substantially central portion of the front and rear plate portions 61, that is, the front and rear plate portions 61 are turned by 90 degrees. Notches 71 are formed on both sides of a portion that becomes an intermediate height when bent. A shallow groove for forming the plug connection portion 23 is formed on the end side of the notch 71. Since the groove is shallow, both side edges are flat. Further, by pressing, the front and rear plate-shaped portions 61 and the left and right plate-shaped portions 70 are
Bend upwards. The center portion of the thus formed plug contact portion 23 is curved by press working, but this curvature increases the contact area when the banana plug is connected, so that the plug is more securely connected. You. In the terminal body 59 formed as described above,
As shown in FIGS. 2C and 2D, the knob 19 is covered, and the terminal 15 is formed. In the terminal 15, the banana plug inserted from the plug connection hole 26 is connected to the plug connection portion 2 formed by the front and rear plate portions 61.
The operation of connection at 3 and the operation of sandwiching and connecting a lead wire between the bottom portion 60 and the terminal plate 14 are the same as in the first embodiment.

Third Embodiment (FIG. 3) The third embodiment is different from the second embodiment in that a semicircular deep recess is located closer to the end than the notch 71 in the two front and rear plate portions 61. That is, a groove was formed. When these two concave grooves are combined, a substantially cylindrical plug connecting portion 23 is formed as shown in FIG. In the terminal 15, the action of connecting the banana plug inserted from the plug connection hole 26 with the plug connection portion 23 formed by the front and rear plate portions 61, and connecting the lead wire with the bottom portion 60 and the terminal plate 14. The operation of sandwiching and connecting is the same as in the first and second embodiments.

Fourth Embodiment (FIG. 4) In the first, second and third embodiments described above, the front and rear plate portions 6 are used.
1. The left and right plate portions 70 and the bottom portion 60 are made of one metal plate,
The screw portion 17 is formed of a different member different from the above, and the two are combined. On the other hand, in the fourth embodiment, all are formed by one metal plate. The processing steps of the fourth embodiment will be described below.

(1) Punching Step As shown in FIG. 4 (b), when a metal plate made of a conductive material is folded in two from the center and superimposed, a screw portion 1 is formed.
7, a narrow portion to become the bottom portion 60, a band portion 68 extending in the length direction from the portion to become the bottom portion 60, and a wide front and rear plate extending further from the band portion 68 in the length direction. The shape part 61 is punched out by press working or the like. At this time, the screw portion 17 has a semicircular cross section in which the inner side to be overlapped is a plane and the outer side is an arc. Further, similarly to the second embodiment shown in FIG. 2, a shallow concave groove which becomes the plug connection part 23 is formed in the front and rear plate-like parts 61.

(2) Bending process Dotted line portions 80, 81, 82, 83, 84 shown in FIG.
Of which, the dotted line portion 80 at the center of the narrow width portion to be the screw portion 17
Are folded at 90 ° valley and overlapped, the dotted line portion 81 at the boundary with the bottom portion 60 is folded at 90 ° mountain, and the dotted line portion 82 of the band portion 68 is
The valley fold and the dotted line portion 83 at the boundary with the plate-shaped portion 61 are 90-degree mountain folds. Then, as shown in FIG. 4A, the screw portion 17, the bottom portion 60, and the plug connection portion 23 are formed, and the terminal body 59 is formed.

(3) Threading Step A threading process is performed on the overlapping portion of the two narrow portions of the metal plate to form a threaded portion 17.

(4) Step of Assembling Terminal Body 59 and Knob 19 The terminal body 59 is covered with the knob 19 to form the terminal 15. This step is the same as in the first to third embodiments. In the terminal 15,
The action of electrically connecting the banana plug inserted from the plug connection port 26 at the plug connection portion 23 constituted by the front and rear plate-shaped portions 61, and holding the lead wire between the bottom portion 60 and the terminal plate 14. The first and second functions are as follows.
This is the same as the embodiment.

Fifth Embodiment (FIG. 5) The terminal 15 in the fifth embodiment comprises a terminal body 59 and a knob 19.
Reference numeral 9 denotes a stamped-out one conductive metal plate, which is a plug connection portion 23 composed of two left and right plate-like portions 70 standing up at a predetermined interval from substantially the center, and Are formed by bending back and forth two arms 69 to the front and back, and a bottom portion 60 for sandwiching a lead wire between the terminal plate 14 and a screw portion 17 formed by a narrow portion falling down substantially from the center. And characterized by the following. The processing steps of the fifth embodiment will be described below.

(1) Punching Step A metal plate made of a conductive material is pressed into a metal plate as shown in FIG.
As shown in (a), the two left and right plate-like portions 70 in the shape of a tuning fork.
Then, an arm 69 extending left and right from the base of the left and right plate-like portions 70 and a component part of the screw portion 17 extending downward are punched out. At this time, the left and right plate-like portions 70 are punched in a state of standing vertically from the arm 69. Further, the lower part outside the left and right plate-shaped parts 70 and the arms 69
A serrated locking claw 63 for crimping the knob 19 is provided in a portion close to.

(2) Bending The arms 69 on both sides are bent 180 degrees so that one is on the front side and the other is on the back side, thereby forming the bottom portion 60. Here, since the left and right plate-shaped portions 70 have already been raised, there is no need to perform a bending process for raising as in the other embodiments.

(3) Threading Step The portion forming the threaded portion 17 is subjected to threading.

(4) Step of Assembling Terminal Body 59 and Knob 19 As shown in FIG. 5C, a press-fitting groove 65 for fitting the terminal 15 is formed in the knob 19 in advance.
The terminal body 59 is press-fitted and fixedly assembled. In addition,
Since the shape of the terminal body 59 is different from that of the first to fourth embodiments, the shape of the press-fitting groove 65 of the knob 19 is also different from that of the above-described embodiment, but there is no change in the point of press-fitting and fixing. Further, in the terminal 15, the banana plug inserted from the plug connection hole 26 is electrically connected to the plug connection portion 23 formed by the front and rear plate-shaped portions 61, and the bottom portion 60 and the terminal plate 14 are connected to each other. The operation of connecting and electrically connecting the lead wires is the same as in the first to fourth embodiments.

[0028]

According to the present invention, a simple press working such as punching and bending of a conductive metal plate, or a screw forming method as required, is performed without using a special and advanced technique such as a cold forging method. The terminal body 59 can be manufactured only by adding welding. Therefore, compared to the manufacturing method using the cold forging method, there is no need to select materials in detail, there is no need for a pretreatment step, and there is no need to use tools that can withstand high pressure. Is not required.
In addition, the terminal body 59 can be manufactured in large quantities at low cost as compared with the case where the cold forging method is used.

Furthermore, by forming the plug connection portion 23 by combining two front and rear plate-shaped portions 61 each having a shallow groove or a semicircular groove, the contact surface of the plug connection portion 23 with the banana plug is made large. And electrical contact resistance can be reduced.

The terminal body 59 can be manufactured without welding by punching out not only the portion that becomes the plug connection portion 23 and the bottom portion 60 but also the screw portion 17 by press working or the like. Also, since only one component is required for the formation, assembly can be further simplified.

By forming the two left and right plate-like portions 70 in a shape facing upright in advance, the plug connection portion 23 can be formed only by punching out the left and right plate-like portions 70 without bending. Further, the bottom portion 60 can be formed only by bending the left and right arms 69 back and forth. Further, the threaded portion 17 can be formed by only punching and threading without welding.

[Brief description of the drawings]

1A and 1B show a first embodiment of a terminal 15 which is a main part of a terminal connector according to the present invention, wherein FIG. 1A is an exploded view of a terminal body 59, and FIG. 1B is a cross-sectional view taken along line CC in FIG. FIG. 3C is a sectional view taken along line AA in FIG.
(D) is a sectional view taken along line BB in (b).

FIGS. 2A and 2B show a second embodiment of a terminal 15 which is a main part of a terminal connector according to the present invention, wherein FIG. 2A is a perspective view of a terminal body 59, and FIG. 2B is a perspective view of the terminal body 59 before bending. (C) is a sectional view taken along line EE in (d), and (d) is a sectional view taken along line DD in (c).

3A and 3B show a third embodiment of a terminal 15 which is a main part of a terminal connector according to the present invention, wherein FIG. 3A is a perspective view of a terminal body 59, and FIG. 3B is a perspective view of the terminal body 59 before bending. (C) is a sectional view taken along line GG in (d), and (d) is a sectional view taken along line FF in (c).

4A and 4B show a fourth embodiment of the terminal 15 which is a main part of the terminal connector according to the present invention, wherein FIG. 4A is a perspective view of the terminal body 59, and FIG. 4B is a perspective view of the terminal body 59 before bending. (C) is a sectional view taken along line II in (d), and (d) is a sectional view taken along line HH in (c).

5A and 5B show a fifth embodiment of a terminal 15 which is a main part of a terminal connector according to the present invention, wherein FIG. 5A is a perspective view of a terminal body 59, and FIG. 5B is a perspective view of the terminal body 59 before bending. (C) is a sectional view taken along the line KK in (d), and (d) is a sectional view taken along the line JJ in (c).

FIG. 6 shows an embodiment of a conventional terminal.
(A) is a perspective view of the terminal body 59, (b) is (c).
MM line cross-sectional view in (b), L in (b)
FIG. 4 is a sectional view taken along line L.

FIG. 7 is a sectional view showing an embodiment of a conventional terminal connector.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Insulating board, 11 ... Cylindrical part, 12 ... Notch inserted, 13 ... Through-hole, 14 ... Terminal plate, 15 ... Terminal, 16 ... Screw hole, 17 ... Screw part, 18 ... Flange part, 19 ...
Knob, 20: insertion hole, 21: press-fit locking piece, 22: terminal, 23: plug connection, 24: flange fitting recess, 25
... fitting holes, 26 ... plug insertion holes, 27 ... bent parts, 28 ...
Notch part, 29 ... detent projection, 30 ... press fitting, 59
... Terminal body, 60 ... Bottom part, 61 ... Plate part, 62 ...
Screw insertion hole, 63 locking pawl, 64 screw head, 65 press-fit groove, 68 band, 69 arm, 70 plate-shaped part, 71
… Notch

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5E012 BA13 5E051 BB02 5E086 CC06 DD01 DD05 DD19 DD33 DD35 DD47 HH01 LL10 LL14

Claims (9)

[Claims] 1. A terminal connector comprising a terminal plate 14 mounted on an insulating substrate 10 and a terminal 15 screwed onto the terminal plate 14. The terminal 15 comprises a terminal body 59 and a knob 19. 59
Is a bottom portion 6 for holding a lead wire with the terminal plate 14.
0 and two plate-like portions 6 which rise from the front and rear of the bottom portion 60 and face each other at a predetermined interval to form the plug connection portion 23.
1. A terminal connector comprising: a screw member 17 provided on the bottom portion 60 and screwed to the terminal plate 14. 2. A plate-shaped part 61 constituting the plug connection part 23.
Is composed of two front and rear flat plates, and the screw portion 17 is
2. The terminal connector according to claim 1, wherein the terminal connector is inserted and fixed in a screw insertion hole 62 formed in the hole. 3. A plate-shaped part 61 constituting the plug connection part 23.
Forms a notch 71 in the middle of the two front and rear plates,
A shallow concave groove for plug insertion is bulged outward from the notch portion 71 on the end side, the bottom portion 60 causes the left and right plate-like portions 70 to rise, and the screw portion 17 is a screw formed on the bottom portion 60. 2. The terminal connector according to claim 1, wherein the terminal connector is inserted and fixed in the insertion hole. 4. A plate-shaped part 61 constituting the plug connection part 23.
Forms a notch 71 in the middle of the two front and rear plates,
The end side of the notch 71 is curved into a semicircular groove, and these semicircles are combined to form a cylindrical shape. The bottom 60 raises the left and right plate-like portions 70, and the screw portion 17 2. The terminal connector according to claim 1, wherein said terminal connector is inserted and fixed in a screw insertion hole formed in said bottom portion. 5. A terminal connector comprising a terminal plate 14 mounted on an insulating substrate 10 and a terminal 15 screwed onto the terminal plate 14. The terminal 15 comprises a terminal body 59 and a knob 19. 59
Is formed by punching a single conductive metal plate. The narrow portion that is folded back and overlapped at the center is a screw portion 17, and the wide portion that is continuous with both ends of the screw portion 17 is outwardly folded. A terminal connector characterized by being bent to form a bottom portion (60), and two plate-shaped portions (61) connected to both ends of the bottom portion (60) are raised from front and rear to form a plug connection portion (23). 6. A terminal connector comprising a terminal plate 14 mounted on an insulating substrate 10 and a terminal 15 screwed onto the terminal plate 14. The terminal 15 comprises a terminal body 59 and a knob 19, 59
Is formed by punching a single conductive metal plate, and includes two left and right parts that stand up at a predetermined interval from substantially the center.
A plug connecting portion 23 composed of two plate-like portions 70 and two arms 69 extending from the center to the left and right are formed by bending back and forth, and a bottom portion for holding a lead wire between the terminal plate 14 and the terminal portion 14. 60. A terminal connector comprising: a screw portion 17 formed by a narrow portion falling from a substantially center. 7. A punching step of punching a conductive metal plate to form a substantially central bottom portion 60, front and rear plate portions 61 continuous at both ends of the bottom portion 60, and screw holes 62 of the bottom portion 60. A step of forming the plug connection part 23 by raising the plate-shaped parts 61 before and after the punching at a predetermined interval, and inserting and fixing a screw prepared in advance to the bottom part 60 to form the screw part 17. A method for manufacturing a terminal connector, comprising: a processing step; and a step of coating a knob 19 on a terminal body 59 formed in each of the above steps. 8. A conductive metal plate is punched out to form a narrow portion which becomes a threaded portion 17 at a central portion, a wide portion which becomes a bottom 60 which is continuous with the narrow portion, and a wide portion which becomes a bottom 60 which is continuous with the narrow portion. A punching process for forming a strip 68 and a wide front and rear plate-shaped portion 61 continuous with the strip 68, and a threaded portion 17 and a bottom 6 formed by valley folding and mountain folding of the punched metal plate.
0, a step of forming the plug connection part 23, a step of threading a part forming the threaded part 17, and a knob 19 on the terminal body 59 formed in each of the steps.
And an assembling step of coating the terminal connector. 9. A pair of left and right plate portions 70 which are punched out of a conductive metal plate and rise from substantially the center, an arm 69 which extends left and right from the approximate center, and a screw portion which extends downward from the approximate center. 1
7, a bending step of bending the arms 69 on both sides by 180 degrees so that one side is on the front side and one side is on the back side, and the bottom part 60 is formed. And a step of assembling the knob 19 on the terminal body 59 formed in each of the above steps, and a method of manufacturing a terminal connector.