JP3168488B2 - Mounting structure of terminal fittings on printed circuit board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a terminal fitting to which a power supply wire and a load wire are connected to a printed circuit board.

[0002]

2. Description of the Related Art When a large current flows from a power supply wire connected to a wiring pattern on a printed circuit board to, for example, a heater wire (load wire) connected to the same wiring pattern, the wiring pattern is destroyed due to the thermal stress and smoke is generated. May cause ignition.

[0003] As a technique for solving such a problem, there is an invention disclosed in Japanese Patent Application Laid-Open No. 4-2942072. The present invention connects a power supply wire and a load wire to a plate-shaped terminal fitting, fixes the terminal fitting to a printed circuit board, and prevents a large current from the power supply wire from flowing through the wiring pattern.
It flows to the load wire through the terminal fitting.

According to the above-described electric wire connection structure, since a large current does not flow through the wiring pattern of the printed circuit board, there is no possibility that the wiring pattern is broken and smoke or fire occurs. However, when the terminal fitting is inserted into the mounting hole of the printed circuit board and soldered, it is necessary to take measures to prevent the terminal fitting from coming off, and if the terminal fitting protrudes from the back surface of the printed circuit board, it is swaged. Therefore, a caulking jig is required for that, and a lot of man-hours are required for the caulking operation.

In addition, since only one or two load wires can be connected to one terminal fitting due to its structure, a large number of terminal fittings are required when there are many load wires. Furthermore, since the connection part of the load wire of the terminal fitting has a complicated structure and is further connected by soldering, connection of the load wire requires a lot of man-hours, and the various above-mentioned various types of connection are required. Combined with problems, increased costs were inevitable.

Therefore, in order to deal with such a problem,
A terminal fitting as shown in FIG. 20 is used. The terminal fitting 50 is formed by bending a conductive metal material into a substantially U-shape to form a substrate 51 and a plurality of terminal portions 52 a, 52 b, 5.
2c and 52d are formed, and two fixing holes 54 are formed in the substrate 51.
a and 54b, and through holes 29a and 29b corresponding to the fixing holes 54a and 54b are provided in the printed circuit board 20. Note that 53a, 53b, 53c, 53
“d” is a connection hole provided in each of the terminal portions 52a to 52d and through which a power supply wire and a load wire are inserted and connected.

[0007] The terminal fitting 50 is connected to the printed circuit board 2.
21, the terminal fitting 50 is brought into contact with the printed circuit board 20 as shown in FIG. 21, the fixing holes 54 a and 54 b are aligned with the through holes 29 a and 29 b, and are integrally fixed by the fitting 55, or As shown in FIG. 22, it is fixed integrally with a screw 56 and a nut 57. And the terminal part 52
A load wire and a power wire are inserted into the holes 53a to 53d provided in the holes a to 52d and soldered so that a power current flows to each load wire via the terminal fitting 50 without flowing a large current to the printed circuit board 20. It was made. Note that the length of the terminal fitting 50 is changed according to the number of load wires, and
By increasing or decreasing a to 52d, one terminal fitting 50 is formed.
Can connect the required number of load wires.

[0008]

According to the terminal fitting mounting structure as described above, most of the problems of the invention disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 4-294072 can be solved. There are the following problems. (1) Since the terminal fittings 50 are fixed to the printed circuit board 20 with the fittings 55 and the screws 56 and the nuts 57, not only are parts and jigs necessary for this, but also
Many man-hours are required for fixing. (2) When fixing the terminal fitting 50 to the printed circuit board 20, the positioning work for aligning the fixing holes 54a, 54b with the through holes 29a, 29b is troublesome.

(3) The substrate 51 of the terminal fitting 50 is easily deformed in an arc shape with the center in the length direction facing upward, and does not come into contact with the surface when it is mounted on the printed circuit board 20, so that it is fixed. The holes 54a, 54b and the through holes 29a, 29b are difficult to align. (4) Each of the terminal portions 52a to 52d of the terminal fitting 50 easily falls inward or outward.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a simple structure, easy to position and fix when mounted on a printed circuit board, and has no possibility of deforming the upper board or the terminal portion. It is an object of the present invention to obtain a mounting structure of the terminal fitting having the above on a printed circuit board.

[0011]

Structure for mounting printed circuit board of the terminal fitting according to the present invention, in order to solve the problems], in the mounting structure to a printed circuit board of the power supply wire and the terminal fitting load wire is connected to said terminal fitting, the substrate A plurality of terminal portions bent upward on both sides in the width direction of the substrate, and a substantially L-shaped fixing piece having a bent portion formed on the lower surface of the substrate. A mounting hole formed of a hole into which the bent portion of the provided fixing piece is inserted and a slit-shaped hole provided continuously with the hole and in which the fixing piece slides, and the slit-shaped hole on the back surface of the printed circuit board. And a land provided around the hole of the fixed piece, the bent portion of the fixed piece is formed to be inclined downward, and the fixed piece is slid into the slit-shaped hole of the printed circuit board, and then the bending is performed. Between the part and the land One in which the.

[0012] Further, a pair of fixing pieces for the terminal fittings and mounting holes provided on the printed circuit board are provided, and bent portions of the fixing pieces are formed to have different lengths, and the mounting holes are respectively formed in the shape of the fixing pieces. It is formed correspondingly.

In addition, a projection is provided on the back surface of the substrate of the terminal fitting, and a recess or a through hole is provided on the printed circuit board corresponding to the projection.

Further, a wiring pattern is formed between lands provided on the back surface of the printed circuit board corresponding to a pair of fixing pieces provided on the terminal fitting.

[0015]

The bent portion of the fixing piece of the terminal fitting provided on the printed circuit board is formed to be inclined downward, and the fixing piece is inserted into the hole into which the bent portion is inserted, and is inserted into the slit-shaped hole of the print. When it slides, it hits the end of the slit-shaped hole and stops,
The terminal fitting is positioned at this position. In this state, if the bent portion and the land provided around the slit-shaped hole on the back surface of the printed circuit board are soldered, the terminal fitting is securely fixed at a predetermined position on the printed circuit board,
When sliding the terminal fitting, the pattern provided on the back surface of the printed circuit board is not damaged.

Further, by forming the bent portions of the pair of fixing pieces to have different lengths, when attaching the terminal fitting to the printed circuit board, the orientation is not mistaken.

Further, by fitting the protruding portion provided on the back surface of the substrate into a concave portion or a through hole provided on the printed circuit board, the positioning of the terminal metal can be more reliably performed, and the terminal metal can be used for soldering or the like. Prevent moving. Furthermore, by forming a wiring pattern between the lands provided on the back surface of the printed circuit board corresponding to the pair of fixing pieces provided on the terminal fittings, it is possible to enhance the conductivity between the terminal portions of the terminal fittings. The heat of the terminal fittings can be dissipated.

[0018]

Embodiment 1 FIG. 1 is a perspective view of a first embodiment of the present invention, FIG. 2 is a side view of the terminal fitting, and FIG. 3 is a plan view of FIG. In the drawing, reference numeral 1 denotes a terminal fitting, a substrate 2 having both sides in the width direction bent upward to form reinforcing flanges 3a and 3b, and a plurality of terminals protruding upward from the reinforcing flanges 3a and 3b (in the figure). Indicates the case of four terminals 4a, 4b, 4
c, 4d, and a pair of substantially L-shaped fixing pieces 7a, 7b formed by cutting and bending the substrate 2 at predetermined intervals. Reference numeral 5 denotes a step provided on both sides of each of the terminal portions 4a to 4d, and reference numerals 9a to 9d denote connection holes provided in each of the terminal portions 4a to 4d to which the power supply wire 35 is inserted and connected.

Here, as shown in FIG. 4, the cutting and bending process is a process in which the substrate 2 is cut at a position indicated by a solid line and bent at a position indicated by a broken line in a single pressing step. The number of processing steps can be reduced, and material waste can be eliminated. In addition, as shown in FIG. 5, while the meat is left between the fixing pieces 7a and 7b in order to improve the strength of the substrate 2,
An R may be formed at the tip of each of the fixing pieces 7a and 7b. Also, as shown in FIG. 6, in the first step, the fixing pieces 7a, 7b
May be performed, and bending may be performed in the second step. In this case, pressing is performed in two steps, but effects such as stable dimensions, less burrs, and the ability to form R at the base and tip of the fixing pieces 7a and 7b are obtained.

Reference numeral 20 denotes a printed circuit board on which the terminal fitting 1 is mounted, and reference numerals 21a and 21b denote fixing pieces 7 provided on the terminal fitting 1.
a, 7b are a pair of mounting holes into which the bent portions 8a, 8b are inserted. The mounting holes 21a, 21b are
22b is connected to narrow slits 23a and 23b. The wide portions 22a and 22b are large enough to insert the bent portions 8a and 8b of the fixing pieces 7a and 7b from above. 23b is formed to have a width in which the fixing pieces 7a and 7b can slide. 24a and 24b are provided on the back surface of the printed circuit board 20 at the slit portions 23a and 24b.
This is a land provided around 23b.

Reference numeral 30 denotes a connection terminal made of a conductive material having elasticity, which is configured to be elastically fitted to the terminal portions 4a to 4d of the terminal fitting 1, respectively.
A through hole 31 is provided at a position corresponding to the connection holes 9a to 9d of d. 32 is a load wire connected to the connection terminal 30, and 35 is a power wire.

Next, an example of a procedure for attaching the terminal fitting 1 configured as described above to the printed circuit board 20 and connecting a power supply wire and a load wire will be described. First, the bent portions 8a, 8b of the fixing pieces 7a, 7b of the terminal fitting 1 are connected to the wide portions 22a, 2 of the mounting holes 21a, 21b provided in the printed circuit board 20.
2b, when the substrate 2 comes into contact with the surface of the printed circuit board 20, the terminal fitting 1 is slid in the direction of arrow a so that the fixing pieces 7a, 7b enter the slits 23a, 23b. When the terminal fitting 1 is continuously slid, the fixing piece 7
The a and b stop at the terminals of the slits 23a and 23b, and the attachment of the terminal fitting 1 is positioned at this position. In this state, if the bent portions 8a and 8b of the fixing pieces 7a and 7b are soldered to the lands 24a and 24b as shown in FIG. 7, the terminal fitting 1 is fixed to the printed circuit board 20.

Next, a required number of connection terminals 30 are fitted into the terminal portions 4a to 4d of the terminal fitting 1 until they hit the step 5, and the connection holes 9a to 9d of the terminal portions 4a to 4d to which the connection terminals 30 are not mounted. Or the terminal portion 4a to which the connection terminal 30 is mounted
To 4d connection holes 9a to 9d and connection terminal 30 through hole 31
When the power supply wire 35 is inserted through and soldered, the work of attaching the terminal fitting 1 to the printed circuit board 20 and wiring the power supply wire 35 and the load wire 32 are completed.

In the embodiment constructed as described above, the fixing pieces 7a, 7b are attached to the printed circuit board 20 by attaching the fixing pieces 7a, 7b to the mounting holes 21a, 21b of the printed circuit board 20.
, Slide it, and fix the fixing piece 7
Since only a and 7b need to be soldered to the lands 24a and 24b, there is no need for a separate component or a caulking jig or the like, which is extremely simple. Further, since reinforcing flanges 3a and 3b are provided on both sides of the terminal 2 in the longitudinal direction of the substrate 2, the substrate 2
The terminal fitting 1 can be smoothly slid along the surface of the printed circuit board 20 without the risk of the terminal fitting 1 being curved in an arc shape. This also allows the fixing pieces 7a, 7b of the terminal fitting 1 to be fixed.
And the mounting holes 21a and 21b of the printed circuit board 20 can be accurately aligned. The load wires 32 and the power wires 35 may be attached to the terminal fitting 1, and may be attached to the printed circuit board 20.

Embodiment 2 In this embodiment, at least one protrusion 10 is provided on the lower surface of the substrate 2 of the terminal fitting 1 as shown by a broken line in FIGS. A concave portion or a through hole (hereinafter referred to as a through hole) 25 is provided at a position corresponding to 10 (see FIG. 1).

In this embodiment configured as described above,
The fixing pieces 7a, 7b of the terminal fitting 1 are inserted into the wide portions 22a, 22b of the mounting holes 21a, 21b of the printed circuit board 20,
Along the surface of the printed circuit board 20, the slits 23a, 23
When the substrate 2 is slid toward the side 3b, the substrate 2 slides with its central portion curved upward by the height of the protruding portion 10 due to its elasticity,
As shown in FIG. 8, when the protrusion 10 is fitted into the through hole 25 of the printed board 20, the board 2 returns to its original state and comes into contact with the surface of the printed board 20. At this time, the fixing pieces 7a and 7b of the terminal fitting 1 hit the ends of the slits 23a and 23b and are positioned.

According to the present embodiment, by fitting the protruding portion 10 provided on the substrate 2 of the terminal fitting 1 into the through hole 25 of the printed circuit board 20, the terminal fitting 1 is accurately positioned and the soldering is performed until soldering. During this time, the terminal fitting 1 can be prevented from moving or falling off.

Embodiment 3 In this embodiment, as shown in FIG. 9, the bent portions 8a and 8 of the pair of fixing pieces 7a and 7b provided on the terminal fitting 1 are formed to have different lengths (widths) on right and left sides. The wide portions 22a and 22b of the mounting holes 21a and 21b provided in the printed circuit board 20 are also formed to have dimensions corresponding to these. According to the present embodiment, even if the terminal fitting 1 is mounted on the printed circuit board 20 with the left and right reversed, the fixing pieces 7a and 7b are attached to the mounting holes 21a and 2b.
Since the terminal fitting 1 cannot be inserted into the printed circuit board 20, the terminal fitting 1 can always be accurately attached to the printed circuit board 20.

Embodiment 4 In this embodiment, as shown in FIG. 10, the bent portions 8a and 8b of the fixing pieces 7a and 7b of the terminal fitting 1 are bent at an obtuse angle so as to be inclined downward. . With this configuration, the fixing pieces 7a and 7b of the terminal fitting 1 are attached to the mounting holes 21.
a, 21b, and slide along the printed circuit board 20 toward the slits 23a, 23b.
Since a and 8b do not slide on the back surface of the printed circuit board 20,
The wiring pattern provided on the back surface is not damaged.

When the fixing pieces 7a and 7b of the terminal fitting 1 are soldered to the lands 24a and 24b of the printed circuit board 20, as shown in FIG. 11, between the lands 24a and 24b and the bent portions 8a and 8b. Since the solder enters, the terminal fitting 1 can be more securely fixed. As shown in the third embodiment (FIG. 9), the fixing piece 7 of the terminal fitting 1 is used.
Even when the bent portions 8a and 8b of the a and 7b are formed to have different lengths (widths), the bent portions 8a and 8b are formed as in the present embodiment.
a, 8b may be inclined downward and bent at an obtuse angle.

Embodiment 5 In this embodiment, as shown in FIGS.
In the press working, the substrate 2 is provided with ribs 12a and 12b having a rectangular, semicircular or triangular cross section in a direction perpendicular to the longitudinal direction of the substrate 2. With this configuration, the substrate 2 is reinforced and the terminal portions 4a to 4a are formed.
4b can be prevented from falling inward or outward.

Embodiment 6 FIG. 14 shows a terminal fitting 1 and a printed circuit board 20 constructed by combining the above-described first to fifth embodiments. The mounting structure of the terminal fitting having the features of the above embodiments is shown in FIG. Can be realized. The mounting holes 21 provided in the printed circuit board 20 are provided.
a, 21b to the slit portion 23 from the wide portions 22a, 22b.
If the chamfers 27a and 27b are provided at the transitions to the terminals a and 23b, the terminal fitting 1 can slide more smoothly.

Embodiment 7 In this embodiment, as shown in FIG. 15, the fixing pieces 7a and 7b of the terminal fitting 1 are formed alternately in the longitudinal direction of the substrate 2, or as shown in FIG. Are formed alternately orthogonally to the length direction of. By configuring the fixing pieces 7a and 7b as described above, the length of the substrate 2, that is, the length of the terminal fitting 1 can be shortened and downsized, and the material can be saved.

Embodiment 8 In the first to seventh embodiments described above, the fixing piece 7 of the terminal fitting 1 is used.
Although the case where a and 7b are formed by cutting and bending is shown, in this embodiment, all or a part of the fixing pieces 7a and 7b are bent by hand. In the embodiment of FIG. 17, the cutting and the bending from the substrate 2 are processed by pressing, and the fixing pieces 7a and 7b are suspended perpendicularly to the substrate 2 and the slit-shaped mounting holes 26a,
26b.

The terminal fitting 1 as described above is connected to the printed circuit board 2
0, the fixing pieces 7a, 7b of the terminal fitting 1 are inserted into the mounting holes 26a, 26b of the printed circuit board 20, and the fixing pieces 7a, 7b are manually folded from the back side of the printed circuit board 2 as shown by broken lines. Bend and solder to lands 24a, 24b. In this case, the projection 10 may be provided on the back surface of the substrate 2 of the terminal fitting 1 and fitted into the through hole 25 provided on the printed circuit board 20, or the mounting hole 26a provided on the printed circuit board 20 may be provided. , 26b with fixing pieces 7a, 7b
The fixing pieces 7a,
7b may be inserted and the terminal fitting 1 may be slid so that the projection 10 fits into the through hole at the stopped position.

Embodiment 9 In the eighth embodiment, cutting of the fixing pieces 7a and 7b and
Although the case where the bending from the substrate is performed by pressing is shown, it is also possible to perform only the cutting by the pressing and perform the bending from the substrate 2 and the bending on the back surface of the printed circuit board 2 by hand. In this case, as shown in FIG. 18, the bent portions 13a and 13b from the substrate 2 are made thinner, or the bent portion 1a on the back surface of the printed circuit board 20 is further reduced.
4a and 14b may be formed thin. In the present embodiment, each of the above-described embodiments can be implemented to the extent possible.

Embodiment 10 In this embodiment, as shown in FIG. 19, a wiring pattern is provided between both lands 24a and 24b provided on the back surface of the printed circuit board 20 corresponding to the fixing pieces 7a and 7b of the terminal fitting 1. 28
Is formed. With this configuration, the conductivity between the terminal portions 4 a to 4 d of the terminal fitting 1, that is, between the load wire 32 and the power supply wire 35 is enhanced. Also,
It is possible to dissipate the heat of the terminal fitting 1 generated by the large current and to further securely fix the fixing pieces 7a and 7b of the terminal fitting 1. In the present embodiment, each of the above-described embodiments can be implemented to the extent possible.

[0038]

As is clear from the above description, according to the present invention, the following remarkable effects can be obtained. (1) In a mounting structure of a terminal fitting to which a power supply wire and a load wire are connected to a printed board, the terminal fitting includes a plurality of terminal portions bent upward on both sides in the width direction of the board, and Approximately L with a bent part formed on the lower surface
A fixing piece having a U-shape, and a slit-like shape is provided on the printed circuit board in which a bent portion of the fixing piece provided in the terminal fitting is inserted and the hole is provided continuously with the hole, and the fixing piece slides. And a land provided around the slit-shaped hole on the back surface of the printed circuit board, wherein the bent portion of the fixed piece is formed to be inclined downward, and the fixed piece After sliding into the slit-shaped hole of the printed circuit board, soldering between the bent portion and the land is performed, so that the terminal fitting to the printed circuit board having a simple structure and easy positioning and soldering is mounted. Structure can be obtained.
Also, when inserting the fixing piece into the mounting hole of the printed circuit board and sliding it, the wiring pattern provided on the back side of the printed circuit board will not be damaged, and the solder will go between the bent part and the land during soldering. Also penetrate, so that the terminal fitting can be more firmly fixed. (2) Also, a pair of fixing pieces for the terminal fittings and mounting holes provided on the printed circuit board are respectively provided, and bent portions of the fixing pieces are formed at different lengths, and the mounting holes are respectively formed in the shapes of the fixing pieces. Since the terminal fittings are formed correspondingly, there is no possibility that the mounting direction of the terminal fittings is mistaken, and the terminal fittings can always be mounted accurately.

(3) Further, since the protrusions provided on the back surface of the substrate of the terminal fittings are fitted into the recesses or through holes provided on the printed circuit board, the positioning of the terminal fittings can be performed more reliably. In addition, the terminal fitting can be prevented from moving during soldering or the like.

(4) Since the wiring pattern is formed between the lands provided on the back surface of the printed circuit board corresponding to the pair of fixing pieces provided on the terminal fitting, the conductivity between the terminal portions of the terminal fitting is enhanced. And the heat of the terminal fittings can be dissipated.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a first embodiment of the present invention.

FIG. 2 is a front view of the terminal fitting of FIG. 1;

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is an explanatory view showing a processing example of the fixing piece of FIG. 2;

FIG. 5 is an explanatory view showing a processing example of the fixing piece of FIG. 2;

FIG. 6 is an explanatory view showing a processing example of the fixing piece of FIG. 2;

FIG. 7 is a cross-sectional view showing a mounting state of the terminal fitting according to the first embodiment.

FIG. 8 is a cross-sectional view showing a mounting state of a terminal fitting according to a second embodiment of the present invention.

FIG. 9 is a front view of a terminal fitting according to a third embodiment of the present invention.

FIG. 10 is a front view of a terminal fitting according to a fourth embodiment of the present invention.

FIG. 11 is a cross-sectional view showing a mounting state of a terminal fitting of a fourth embodiment.

FIG. 12 is a plan view of a terminal fitting according to a fifth embodiment of the present invention.

FIG. 13 is a front view of FIG.

FIG. 14 is an exploded perspective view of a sixth embodiment of the present invention.

FIG. 15 is an explanatory diagram of a main part of a terminal fitting according to a seventh embodiment of the present invention.

FIG. 16 is an explanatory diagram of a main part of a terminal fitting according to a seventh embodiment of the present invention.

FIG. 17 is a sectional view showing an attached state of a terminal fitting according to an eighth embodiment of the present invention.

FIG. 18 is an explanatory view showing a main part of another example of the terminal fitting according to the eighth embodiment of the present invention.

FIG. 19 is a sectional view showing an attached state of a terminal fitting according to a tenth embodiment of the present invention.

FIG. 20 is an exploded perspective view showing an example of a conventional mounting structure of terminal fittings on a printed circuit board.

FIG. 21 is a cross-sectional view showing a state where the terminal fitting is mounted on the printed circuit board of FIG. 20;

FIG. 22 is a cross-sectional view showing another example of a state where the terminal fitting is mounted on the printed circuit board of FIG. 20;

[Explanation of symbols]

1 terminal fitting, 2 substrate, 3a, 3b flange, 4
a to 4d terminal portions, 7a, 7b fixing pieces, 8a, 8b
Folded pieces, 9a-9d, 31 Connection hole, 10 protrusion, 1
2a, 12b rib, 20 printed circuit board, 21a, 2
1b, 26a, 26b mounting holes, 24a, 24b lands, 25 through holes, 28 wiring patterns, 30 connection terminals, 32 load wires, 35 power wires.

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Takahiro Kanai 1728 Komaeda, Hanazono-cho, Osato-gun, Saitama 1 Mitsubishi Electric Home Equipment Co., Ltd. (56) References JP-A-56-102698 (JP, A) Sho 62-188608 (JP, U) Shokai Sho 64-4904 (JP, U) Shohei 2-40110 (JP, U) Shokai Hei 2-57572 (JP, U) (58) Field surveyed (Int) .Cl. ⁷ , DB name) H01R 12/04-12/06 H01R 12/32

Claims (4)

(57) [Claims] 1. A mounting structure of a terminal fitting connected to a power supply wire and a load wire to a printed circuit board, wherein the terminal fitting has a plurality of terminal portions bent upward on both sides in a width direction of the board. Substantially L-shaped with a bent part formed on the lower surface of the substrate
Solid and a Johen, on the printed board, the bent portion of the fixed piece provided on the terminal fitting is provided continuously to the hole and the hole to be inserted, the
And Tsukeana preparative Do that from a slit-shaped hole fixing piece slides, the back surface of the slit-like set around the hole of the printed circuit board
And the bent portion of the fixed piece is formed to be inclined downward,
Slide the fixing piece into the slit-shaped hole of the printed circuit board.
After moving, solder between the bent part and the land
A structure for mounting a terminal fitting to a printed circuit board. 2. A fixing piece for a terminal fitting and provided on a printed circuit board.
Each is provided a pair of mounting holes has, according to claim 1, to form the bent portion of the solid Johen different lengths, characterized in that the collected Tsukeana formed by respectively corresponding to the shape of the fixing piece Mounting structure of the described terminal fitting to the printed circuit board. 3. The terminal fitting according to claim 1, wherein a projection is provided on the back surface of the substrate of the terminal fitting, and a recess or a through hole is provided on the printed circuit board corresponding to the projection. Mounting structure to printed circuit board. 4. The wiring pattern according to claim 1, wherein a wiring pattern is formed between lands provided on the back surface of the printed circuit board corresponding to the pair of fixing pieces provided on the terminal fitting. Mounting structure for terminal fittings on printed circuit boards.