JPH07263053A - Terminal board - Google Patents

Abstract

PURPOSE:To simply and reliably mount a terminal board on a base board by locking hooks formed on the lower end of a terminal on the opening ends of the base board by pushing the terminal board fitted to the base board by elastic force of a lever integrally formed with the terminal board. CONSTITUTION:In a terminal board 10, leg parts of a terminal 11 are inserted in connecting terminal holes 1c of a printed board 1, and the lower end of a lever 10h is fitted and inserted in a hole 1e of the board 1, and is installed on the board 1. The lever 10h push-moves the terminal board 10 by elastic force, and slides it on the board 1, and locks lower end hooks 11d of the terminal leg parts on the opening ends of the holes 1c through which the leg parts penetratingly pass. Thereby, the terminal board 10 is installed on the board 1 without vertically moving. In this condition, the lower ends 11d of the terminal and a conductor pattern formed on the board 1 are soldered together. Thereby, the terminal board 10 is reliably mounted on and fixed to the board 1, and the terminal leg parts and the conductor pattern are excellently soldered together.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal block mounted on a printed board.

[0002]

2. Description of the Related Art In the case of mounting a terminal block for connecting terminals of connecting wires on a printed circuit board, for example, when mounting a screw terminal block for tightening and connecting with a screw, as shown in FIGS. The terminal block 2 is mounted on the printed circuit board 1, and the leg portions 3a of the screw terminals 3 mounted on the terminal block 2 are inserted into the holes 1c formed at predetermined positions of the printed circuit board 1 by reflow soldering. 1 is soldered and fixed to a conductor pattern (not shown) formed on the back surface 1b of FIG. Then, the end of the connecting wire is fastened and fixed to each screw terminal 3 of the mounted terminal block 2 with a screw 4.

[0003]

However, in the above-mentioned conventional terminal block, when the leg portions 3a of the screw terminals 3 are reflow-soldered to the conductor pattern of the printed circuit board 1, the printed circuit board 1 is deformed by heat, and the terminals are deformed. The base 2 is lifted from the printed circuit board 1, or the leg portion 3a of the screw terminal 3 is
Is pushed up by the pressure of the jetted solder, and the terminal block 2 floats from the printed circuit board 1. When the legs 3a and the conductor pattern are soldered while the terminal block 2 is thus lifted from the printed circuit board 1 (FIG. 7C), the conductor pattern of the printed circuit board 1 and the legs 3a of the screw terminals 3 are soldered. The reliability of soldering with and is lost. Note that FIG. 7C is exaggeratedly drawn. Further, when the terminal block 2 is floated from the printed circuit board 1, the end of the connecting wire is sandwiched between the screw terminal 3 and the screw 4 and the screw 4 is tightened, and the terminal block 2 is moved (pressed down by the tightening force). Therefore, there is a problem that the conductor pattern may be peeled off from the printed circuit board 1.

As a countermeasure against this, after inserting the leg portions 3a of the screw terminals 3 into the holes of the printed circuit board 1, the leg portions of the screw terminals at appropriate places are bent and the terminal block 2 is attached to the printed circuit board 1.
Is locked and reflow soldering is performed. However, such a locking method has a problem that the number of steps when mounting the terminal block 2 on the printed circuit board 1 increases and workability is poor.

The present invention has been made in view of the above-mentioned points, and a terminal block on which terminals are mounted is simply and surely mounted on a printed circuit board, and a connection terminal and a conductor pattern formed on the printed circuit board are provided. An object of the present invention is to provide a terminal block that can be satisfactorily soldered.

[0006]

In order to achieve the above object, according to the present invention, the lower ends of the legs of the terminals, which are made of a synthetic resin member and are mounted, are opened in the conductor pattern formed on the lower surface of the printed circuit board. A terminal block that is inserted into the hole and soldered to the conductor pattern to be mounted, and that is formed at the lower end of the leg of the terminal and that projects from the hole of the printed board and is placed on the printed board. And a hook that is locked to the open end of the hole by sliding in one direction, and the lower end is fitted into a hole formed in the printed circuit board and the lower end is fitted by an elastic force to the terminal block. And a lever for pushing in one direction.

[0007]

In the terminal block, the legs of the terminals are inserted into the holes for connecting terminals formed in the printed circuit board, and the lower ends of the levers are inserted in the holes formed in the printed circuit board so that It is installed. The lever pushes the terminal block by the elastic force to slide it on the printed circuit board, and the hook at the lower end of the terminal leg portion is locked to the open end of the hole through which the leg portion passes. As a result, the terminal block is mounted on the printed circuit board without moving up and down. In this state, the lower ends of the legs of the terminals are soldered to the conductor patterns formed on the printed board. As a result, the terminal block is reliably mounted and fixed on the printed circuit board, and the leg portions of the terminals and the conductor pattern are well soldered.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. As shown in FIGS. 1 to 5, the terminal block 10 has, for example, an upper and lower two-stage structure, and upper and lower stages 10a, 10
The holes 10c and 10d for mounting the terminals are provided at predetermined pitches in b respectively.
(FIG. 2) are formed in a line, and each hole 10 is formed.
Small holes 10c 'and 10d' are provided at the rear ends of the bottom surfaces of c and 10d, respectively.
(FIGS. 2 and 5) are provided. Hole 10 on the upper stage 10a
The number c is set to be one less than the hole 10d in the lower stage 10b, and the holes 10c in the upper stage and the holes 10d in the lower stage are arranged with a shift of a half pitch. And these holes 10
Screw terminals 11 and 12 are attached to c and 10d.

As shown in FIG. 5, the screw terminal 11 has a substantially inverted L shape.
Formed in a mold, the rear end portion 11a is set to be longer than the front end portion 11c to form a leg portion (hereinafter referred to as "leg portion 11a"), and is fastened to a screw hole formed in the central horizontal portion 11b. The screw 13 for is screwed together. A hook 11d is formed at the lower end of the leg 11a. This screw terminal 1
1, the leg portion 11a and the front end portion 11c are press-fitted into the hole 10c, and the lower end of the leg portion 11a is press-fitted and penetrated into the hole 10c 'to project from the lower surface 10e by a predetermined length, and both ends of the central portion 11b are the hole. It is mounted and fixed on both side edges of the open end of 10c.

Similarly to the screw terminal 11, the screw terminal 12 is also fitted in the lower hole 10d. In this way, the screw ends 11 and 12 are attached to the terminal block 10. And
Hooks 11d and 12 at the lower ends of all screw terminals 11 and 12
d is one side along the longitudinal direction of the terminal block 10, for example, FIG.
As shown in FIG. 5, the terminal block 10 is arranged facing to the right when viewed from the front, and the distance d from the lower surface 10e of the terminal block 10 is
The length is set to be substantially the same as the plate thickness t of the printed circuit board to be mounted (FIG. 6A).

A lever 10h is integrally formed and hangs on the upper end of one side surface of the upper stage 10a of the terminal base 10, that is, on the side surface 10f opposite to the direction of the hooks 11d and 12d of the screw terminals 11 and 12. . The base end of the lever 10h is continuously provided substantially at the center of the upper end of the side surface 10f (FIGS. 3 and 4), the central portion hangs from the side surface 10f at a predetermined interval, and the lower end 10i is slightly wedge-shaped. It is formed to be thin (Fig. 1). Then, the central portion of the lever 10h is
It is located inward of the side surface 10g of b (FIG. 2). The lower end 10i of the lever 10h is located at substantially the same position as the lower ends of the leg portions 11a and 12a of the screw terminals 11 and 12, respectively.

The terminal block 10 having such a structure is integrally formed of a synthetic resin member. Therefore, the lever 10h
Has elasticity, and can be bent so as to face the side face 10f as shown by a two-dot chain line in FIG. 6 (a). In this way, the terminal block 10 is formed. In the terminal block 10, the upper stage 10a is set shorter than the lower stage 10b, and the lever 10h is located inward of the side face 10g of the lower stage 10b. , Interference with other mounted components is prevented.

The screw terminals 11 and 12 do not have to be mounted in all the upper and lower holes 10c and 10d, and differ depending on the manner of connecting the electric wire to the printed circuit board.
Like above, it is not installed in the upper and lower predetermined holes. Also,
By displacing the screw terminals 11 and 12 of the upper stage 10a and the lower stage 10b by a half pitch, it becomes easy to tighten the ends of the connecting wires and the workability is improved.

On the other hand, as shown in FIG. 6A, at the mounting position of the terminal block 10 of the printed board 1, the screw terminals 11 and 1 are provided.
Hole 1c (screw terminal 1
The hole through which the second leg 12a is inserted is not shown), the lever 10
A hole 1e through which h is inserted is formed. The leg 11a
The hole 1c through which is inserted is opened in a conductor pattern (not shown) formed on the back surface 1b of the printed board 1. The same applies to the holes through which the legs 12a are inserted.

The procedure for mounting the terminal block 10 on the printed circuit board will be described below. As shown in FIG. 6A, the terminal block 10 is arranged above the position where the printed circuit board 1 is to be mounted, and the lever 10h is pressed against the side face 10f side like the two-dot chain line against the elastic force thereof. Is curved. In this state, the lower ends of the legs 11a of the screw terminals 11 face the holes 1c formed in the printed circuit board 1 and the lower ends 10i of the levers 10h face the holes 1e.

Next, the terminal block 10 is placed on the printed board 1 as shown in FIG. 1B, and the holes 1c and 1e corresponding to the lower end of each leg 11a and the lower end 10i of the lever 10h.
Is inserted into. Since the tip 10i of the lever 10h has a wedge shape, it can be easily inserted through the hole 1e. The hook 11d of each leg 11a is locked at the same position as the open end of the lower surface 1b of the printed board 1. The lower end 10i of the lever 10h also projects from the hole 1e.

When the pressing force applied to the lever 10h of the terminal block 10 is released, the terminal block 10 is locked by the lever 1h.
The printed circuit board 1 is pushed by the spring force of 0h and is moved to the position shown in FIG.
Sliding to the right as indicated by arrow A in (c), the hooks 11d of the leg portions 11a of the screw terminals 11 correspondingly move into the holes 1c.
Engages with the opening edge of the lower surface 1b. As a result, the printed circuit board 1 is connected to the terminal block 10 and the hooks 11d of the screw terminals 11.
It is sandwiched between and. The screw terminal 12 is similar to the screw terminal 11. As a result, the terminal block 10 is firmly locked to the printed circuit board 1 to prevent the terminal block 10 from moving vertically, that is, floating from the printed circuit board 1.

In this state, reflow soldering is performed,
The lower end of the leg portion 11a of each screw terminal 11 is soldered to the conductor pattern formed on the back surface 1b of the printed board 1 (FIG. 6D). The printed circuit board 1 includes the terminal block 10 and the hooks 11d and 12d of the screw terminals 11 and 12 as described above.
Since it is sandwiched between and, thermal deformation is prevented during soldering. In addition, the screw terminal 1
It is also prevented that 1 and 12 are pushed up. As a result, the terminal block 10 is prevented from rising from the printed circuit board 1 during soldering, and the leg portions 1 of the screw terminals 11 and 12 are prevented.
1a and 12a are satisfactorily soldered to the conductor pattern.

In this way, the terminal block 1 is mounted on the printed circuit board 1.
0 is firmly mounted and fixed. Then, after the terminal block 10 is mounted, the terminals (not shown) of the connection wires are sandwiched between the screw terminals 11 and 12 and the screws 13 and 14 (FIG. 1), and the screws 13 and 14 are tightened. To be The terminal block 10
It is firmly fixed to the printed circuit board 1 so that it cannot move up and down.
Even if these screws 13 and 14 are tightened when fastening the ends of the connecting wires to the screw terminals 11 and 12, the terminal block 10 does not move due to the tightening force. It does not come off.

In the above embodiment, the terminal block 10 has an upper and lower two-stage structure and a plurality of screw terminals are attached to each stage. However, the present invention is not limited to this.
It may be a tier. In the above embodiment, the terminal block 10
Although the case where the screw terminal is used as the terminal to be mounted on the terminal has been described, the present invention is not limited to this, and it is needless to say that the same can be applied to a terminal block on which another type of terminal is mounted.

[0021]

As described above, according to the present invention, it is possible to mount a terminal block on a printed circuit board extremely easily and surely even though it has a simple structure, and is formed on the terminal and the printed circuit board. The terminal block is prevented from rising from the printed circuit board during soldering with the conductive pattern. As a result, the terminal and the conductor pattern are reliably soldered, and the reliability is improved. Further, since the terminal block is firmly fixed to the printed circuit board, when a screw terminal is used as the terminal, there is an excellent effect that the conductor pattern is prevented from peeling off from the printed circuit board due to the tightening force of the screw. .

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a terminal block according to the present invention.

FIG. 2 is a plan view of the terminal block of FIG.

FIG. 3 is a rear view of the terminal block of FIG.

FIG. 4 is a left side view of the terminal of FIG.

5 is a sectional view taken along the line VV in FIG.

FIG. 6 is an explanatory diagram showing a procedure for mounting the terminal block of FIG. 1 on a printed board.

FIG. 7 is an explanatory diagram showing a procedure for mounting a conventional terminal block on a printed circuit board.

[Explanation of symbols]

 1 Printed circuit board 10 Terminal block 11, 12 Screw terminal 11a, 12a Leg part 11d, 12d Hook 13,14 Tightening screw

Claims (2)

[Claims] 1. A lower end of a leg portion of a terminal, which is made of a synthetic resin member and is mounted, is inserted into a hole formed in a conductor pattern formed on a lower surface of a printed circuit board, and is soldered and mounted on the conductor pattern. In the terminal block, the terminal block is formed at a lower end of a leg portion of the terminal and protrudes from a hole of the printed circuit board and is locked to an open end of the hole by sliding in one direction of the terminal block mounted on the printed circuit board. A hook; and a lever integrally formed on the terminal block, the lower end of which is fitted into a hole formed in the printed circuit board to push the terminal block in the one direction by elastic force. And the terminal block. 2. The terminal block according to claim 1, wherein the terminal is a screw terminal for tightening and connecting the end of the connecting wire with a screw.