JP2001332328A - Terminal connecting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal connection structure wherein there are a few circuit design limitations, and simplification of connection processes of a connection terminal can be aimed at without soldering and wherein downsizing of a circuit unit that is equipped with the terminal connection structure are made possible. SOLUTION: In the terminal connection structure, a clip body 17 is press-fitted into a through hole 15 of a circuit board 13, and by the fact that a connection terminal 11 is inserted between both flexible arm parts 21 through a terminal receiving part 21b of the both flexible arm parts 21 of the clip body 17, the connection terminal 11 is pinched and fixed by a pinching part 21c of the both flexible arm parts 21 and is connected to a land 19 of the circuit board 13 via the clip body 17. Further, in the case the connection terminal 11 is inserted into the clip body 17, an expanded convex part 33d of a slide member 33 is cut into the clip body 17 with the slide member 33 depressed, and a floating end part of the clip body 17 is opened. This facilitates insertion of the connection terminal 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal connection structure for connecting a connection terminal to a circuit board.

[0002]

2. Description of the Related Art FIG. 6 is a sectional view showing a terminal connection structure used in a conventional automobile junction box or the like. In this connection structure, the connection terminal (here, the male terminal portion of the bus bar) 3 is connected to the circuit board 5 via the relay terminal 1.
Is to be connected to. The relay terminal 1 has a cylindrical shape, and a connection piece 1a to be soldered to the circuit board 5 is protruded at one end. Further, a tongue piece 1b with which the connection terminal 3 to be press-fitted is slidably provided is provided inside the relay terminal 1.

[0003]

However, in the above-mentioned prior art, it is necessary to solder the relay terminal 1 to the circuit board 5, and the installation of the relay terminal 1 on the circuit board 5 is troublesome. is there.

Further, in the above-mentioned prior art, since the connection terminal 3 is pressed into the relay terminal 1 while the tongue piece 1b is bent by the connection terminal 3, the connection terminal 3 is relatively easily inserted with the insertion of the connection terminal 3. It is necessary to provide the vertically long tongue piece 1b so that the tongue piece 1b bends. As a result, the height H of the relay terminal 1 becomes large, and there is a problem that the circuit unit provided with the connection structure becomes large.

Further, as another prior art, there is a so-called card edge type in which a plurality of circuit conductive portions are regularly arranged on the edge of a circuit board. However, it is necessary to concentrate the circuit conductive portions on the edge of the substrate. Therefore, there is a problem that there are many restrictions in circuit design.

In view of the above problems, the first aspect of the present invention
It is an object of the present invention to provide a terminal connection structure in which there are few restrictions on circuit design and the connection step of connection terminals can be simplified without soldering.

A second object of the present invention is to provide a terminal connection structure which can reduce the size of a circuit unit provided with the terminal connection structure.

[0008]

A technical means for achieving the above object is a terminal connection structure for connecting a connection terminal to a circuit board, wherein a circuit conductive portion is provided on an inner peripheral surface of the circuit board. Is provided, provided with a pair of flexible arms that are integrally connected at the base end side, and are flexibly deformed to approach and separate from each other, and are pressed and held in the through holes. And a metal clip body for holding the connection terminal inserted from its free end side between the two flexible arms.

Preferably, the both flexible arms of the clip body include a pressing connection portion which is pressed and connected to the inner peripheral surface of the through hole when the clip body is press-fitted into the through hole. A terminal receiving portion formed by bending the free ends of the two flexible arms in directions away from each other, and a terminal receiving portion formed between the pressing connection portion and the terminal receiving portion, and a distance between the terminals is provided. A clamping portion for clamping the connection terminal inserted between the flexible arms while the clip body is pressed into the through hole, the clamping portion being narrower than the pressing connection portion; Is good.

Preferably, the terminal connection structure includes:
A slide member is provided which is supported by the predetermined support means fixed to the circuit board so as to be able to approach and separate from the circuit board so as to be displaceable therefrom, and the slide member has an insertion hole through which the connection terminal is inserted. And the clip pressed and held in the through-hole as the slide member slides in a direction approaching the circuit board at a peripheral portion of the insertion hole on a surface facing the through-hole. Preferably, there is provided an enlarged convex portion which pushes the flexible arms of the body in between them.

[0011]

FIG. 1 is a perspective view of a terminal connection structure according to an embodiment of the present invention, and FIG. 2 is a sectional view of the terminal connection structure of FIG. This terminal connection structure is for connecting a connection terminal 11 (here, a male terminal portion of a bus bar) to a circuit board 13 as shown in FIGS.
The connection terminal 11 is connected to a through hole 15 provided in the circuit board 13 via a clip body 17. A land (circuit conductive portion) 19 connected to a predetermined circuit is provided in the through hole 15 of the circuit board 13 and around the opening of the through hole 15.

As shown in FIG. 3, the clip body 17 is a metal member having a substantially U-shape as a whole, is integrally connected at the base end side, and is deformed flexibly to approach and separate from each other. A pair of flexible arms 21 is provided, and the through holes 15 are provided.
The connection terminal 11 inserted from the free end side thereof is held between the flexible arms 21 while being pressed and held therein.

Each of the flexible arms 21 has a clip 17
When the through hole 15 is pressed into the through hole 15, the through hole 1
5, a terminal receiving portion 21b formed by bending the free ends of the flexible arms 21 in directions away from each other, and a pressing connection portion 21a. Respectively provided between the terminal receiving portion 21b,
A holding portion 21c for holding the connection terminal 11 inserted between the two flexible arms 21 in a state where the distance between them is smaller than that between the pressing connection portions 21a and the clip body 17 is pressed into the through hole 15; Is provided.

On the other hand, on the upper surface side of the circuit board 13, as shown in FIGS. 1 and 2, the circuit board 13 (or the land 19) has a cylindrical shape and surrounds the periphery of the through hole 15. A support member (support means) 31 fixed to the circuit board 13 is provided, and the slide member 33 is slidably supported by the support member 31 in a direction approaching and separating from the circuit board 13 as shown by an arrow 35 (vertical direction in this case). Have been.

Here, the slide member 33 has a lid-like shape fitted to the opening of the cylindrical support member 31, and the slide member 33 is attached to the front, rear, left and right side walls 33a. A guide hole 33b extending in the sliding direction (here, the vertical direction) is provided. Then, a guide protrusion 31a provided on the support member 31 is inserted into the guide hole 33b from the inside, and the guide hole 33b and the guide protrusion 3
By 1a, the slide member 33 is guided to slide vertically.

The slide member 33 includes a support member 3.
One or a plurality of (two in this case) insertion holes 33 corresponding to the number and arrangement position of the through holes 15 surrounded by 1
c is provided.

Further, the circuit board 13 of the slide member 33
As shown in FIG. 2, when the slide member 33 is slid in a direction approaching the circuit board 13 on a surface (here, a surface on the lower surface side) facing each of the insertion holes 33c. As will be described later, the clip body 17 press-fitted into the through-hole 15 abuts against the inner surface of the terminal receiving portion 21c of each of the flexible arm portions 21 so as to be cut off to enlarge the dimension between the flexible arm portions 21. A projection 33d is provided. Each side surface portion 33e of the enlarged convex portion 33d has a tapered shape approaching each other in a direction approaching the circuit board 13.

In such a terminal connection structure, connection of the connection terminal 11 is performed as follows.

First, as shown by an arrow 41 in FIG. 3, the clip body 17 is
The free end portion is pressed into the through hole 15 from the side of the circuit board 13 where the support member 31 is not provided (the lower surface side in this case). Here, the dimension between the pressing connection portions 21a of the both flexible arm portions 21 is the through hole 1 in the natural state.
Since the inner diameter of the through hole 5 is larger than the inner diameter of the through hole 5, the press connection portion 21a is pressed and connected to the inner peripheral surface of the through hole 15, and the clip body 17 is held in the through hole 15. Then, with this press-fitting, the pressing connection 21
a is pressed and connected to the land 19 in the through hole 15.

Subsequently, as shown by an arrow 43 in FIG. 4, the slide member 33 is pushed down until the lower surface thereof comes into contact with the upper end surface of the support member 31, and the enlarged convex portion 33d is pressed by the two flexible members of the clip body 17. The connection terminal 11 is inserted between the two flexible arms 21 through the insertion hole 33c of the slide member 33 in such a state that the connection terminal 11 is inserted between the flexible arms 21 by being inserted between the arms 21. In a state in which the slide member 33 is pressed down until it comes into contact with the upper end surface of the support member 31, the distance between the holding portions 21c of the both flexible arms 21 is larger than the thickness of the connection terminal 11 by the enlarged protrusion 33d. Is also getting bigger.

When the connection terminal 11 is inserted to a predetermined insertion position as shown in FIG. 4, the force applied to the slide member 33 is released. Then, along with this, the free ends of the both flexible arms 21 of the clip body 17 return to the directions approaching each other while slidingly contacting the tapered side surface 33e of the enlarged projection 33d due to the restoring force. The slide member 33 is slid upward. At the same time, the connection terminals 11 are fixedly held by the holding portions 21c of the two flexible arms 21 that have returned inward, and the connection terminals 11
It is electrically and mechanically connected to the land 19 of the circuit board 13 via the clip 17.

As described above, according to the present embodiment, the clip body 17 is press-fitted into the through hole 15 of the circuit board 13 and the terminal receiving portions 21 of both flexible arms 21 of the clip body 17 are pressed.
b, the connection terminal 11 is inserted between the flexible arms 21 so that the connection terminal 11 is
1c, the connection terminal 11 is connected to the land 19 of the circuit board 13 via the clip body 17, so that there is no need to concentrate the land 19 on the edge of the board unlike the conventional card edge type. There are few restrictions on circuit design, and there is no need for soldering, connection can be made easily, and the connection process of the connection terminal 11 can be simplified.

When the connection terminal 11 is connected, both the flexible arms 21 of the clip body 17 are connected to the connection terminal 11.
, A force that pushes the two flexible arms 21 apart from each other is applied, so that the pressing force of the pressing connection portion 21a against the inner peripheral surface of the through hole 15 is increased, and the connection terminal 1
1 and a strong attachment strength of the clip body 17 can be obtained.

Further, both flexible arms 21 of the clip body 17
Since the terminal receiving portion 21b is formed by bending the free end portion in a direction away from the free end portion, the clip body 17 is pressed and held in the through hole 15 and 17 can be easily inserted into the connection terminal 11.

When the connection terminal 11 is inserted between the two flexible arms 21 of the clip body 17, the slide member 33 is slid in a direction approaching the circuit board 13 so as to enlarge the enlarged protrusion 33d of the slide member 33. By inserting the connection terminal 11 between the two flexible arms 21 through the insertion hole 33c of the slide member 33 in a state where the space between the two flexible arms 21 is pushed open, the insertion of the connection terminal 11 can be easily performed. It can be carried out.

Further, when the connection terminal 11 is inserted while the space between the two flexible arms 21 is pushed by the connection terminal 11 as in the prior art, the two flexible arms are inserted with the insertion of the connection terminal 11. 21 so that the flexible arm 2 is easily bent and deformed.
Although it is necessary to increase the length of the connection terminal 11 in this embodiment, the connection terminal 11 is inserted in a state where the space between the two flexible arms 21 is enlarged by the slide member 33.
The length of both flexible arms 21 can be set short, and as a result, the terminal connection structure according to the present embodiment and the circuit unit provided with the terminal connection structure can be downsized.

FIG. 5 is a sectional view showing a modification of the terminal connection structure according to the present embodiment. In this modification, the connection terminal 11 is connected to the bus bar 51 embedded in the circuit board 13 via the clip body 17. In this case, the bus bar 51 is provided with a press connection portion (circuit conductive portion) 51 a that is exposed on the inner peripheral surface of the through hole 15 and presses and connects the clip body 17. In this modification, the bus bar 51 is embedded in the circuit board 13. However, when the circuit board 13 is formed by stacking a plurality of boards, the bus bar 51 is provided between the boards. It may be sandwiched.

In the above-described embodiment and the modified example, in order to firmly fix the clip body 17 to the circuit board 13, the circuit board 13 must have a predetermined value (for example, 1.6 m).
m) or more.

[0029]

According to the first aspect of the present invention, the clip body is pressed into and held in the through hole of the circuit board, and the connection terminal is inserted from the free end side of the clip body.
The connection terminal is sandwiched between the two flexible arms of the clip body fixed in the through-hole, and the connection terminal is connected to the circuit conductive portion of the circuit board via the clip body. There is no need to concentrate circuit conductive parts on the edge of the board, and there are few restrictions on circuit design, and there is no need for soldering, connection can be made easily, and the connection terminal connection process can be simplified. .

When the connection terminals are connected, a force is applied to both flexible arms of the clip body so as to spread the connection arms from the connection terminals. The pressing force pressed against the inner peripheral surface is increased, and a strong attachment strength of the connection terminal and the clip body can be obtained.

According to the second aspect of the present invention, the free ends of both flexible arms of the clip body are formed with terminal receiving portions by bending the free ends in directions away from each other. Therefore, the connection terminal can be easily inserted into the clip body while the clip body is pressed and held in the through hole.

According to the third aspect of the present invention, when the connection terminal is inserted between the two flexible arms of the clip body, the slide member is slid in a direction approaching the circuit board to enlarge the slide member. The connection terminal can be easily inserted by inserting the connection terminal between the two flexible arms through the insertion hole of the slide member in a state where the two flexible arms are pushed apart by the protrusion. .

Further, when the connection terminal is inserted while pushing the space between the two flexible arms by the connection terminal as in the prior art, the two flexible arms are easily bent with the insertion of the connection terminal. It is necessary to increase the length of both flexible arms so as to be deformed, but in the present invention, since the connection terminal is inserted in a state where the space between the two flexible arms is enlarged by the slide member. In addition, the lengths of both flexible arms can be set short, and as a result, the terminal connection structure according to the present invention and the circuit unit provided with the terminal connection structure can be downsized.

[Brief description of the drawings]

FIG. 1 is a perspective view of a terminal connection structure according to an embodiment of the present invention.

FIG. 2 is a sectional view of the terminal connection structure of FIG. 1;

FIG. 3 is a view showing a mounting process of a clip body.

FIG. 4 is a diagram showing a step of inserting a connection terminal.

FIG. 5 is a cross-sectional view of a terminal connection structure according to a modification.

FIG. 6 is a sectional view showing a conventional terminal connection structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Connection terminal 13 Circuit board 15 Through hole 17 Clip body 19 Land 21 Flexible arm portion 21a Press connection portion 21b Terminal receiving portion 21c Nipping portion 31 Support member 33 Slide member 33c Insertion hole 33d Enlarged convex portion 51 Bus bar 51a Press connection portion

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H05K 1/18 H01R 9/09 A // H01R 107: 00 23/00 C 23/68 R (72) Invention Person Yoshifumi Saka 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi F-term in Harness Research Institute, Inc. (Reference) 5E023 AA02 AA16 BB01 BB22 BB26 CC22 CC27 DD03 DD07 DD25 EE03 EE12 EE29 FF13 GG02 HH08 HH16 HH22 BB13 BB31 BB38 CC22 DD12 EE03 FF12 FF17 GG12 JJ10 JJ20 5E086 CC12 DD10 DD12 HH20 LL06 LL20 5E336 AA07 BC02 CC51 DD01 DD12 EE15 GG30 5G361 BA01 BB01 BC01

Claims (3)

[Claims] 1. A terminal connection structure for connecting a connection terminal to a circuit board, wherein the circuit board is provided with a through hole having a circuit conductive portion provided on an inner peripheral surface thereof, and integrally formed on a base end side. A pair of flexible arms that are connected to each other and are flexibly deformed to form a pair approaching and separating from each other, and the connection terminals inserted from the free ends thereof while being press-fitted and held in the through holes. A terminal connection structure, wherein a metal clip body sandwiched by a flexible arm portion is provided. 2. The two flexible arms of the clip body, wherein the clip body is pressed and connected to the inner peripheral surface of the through hole when the clip body is press-fitted into the through hole; A terminal receiving portion formed by bending the free ends of the two flexible arms in a direction away from each other; and a terminal receiving portion provided between the pressing connection portion and the terminal receiving portion, and the distance between the terminals is set to the distance. It is narrower than between the pressing connections,
2. A holding portion for holding the connection terminal inserted between the flexible arms in a state where the clip body is pressed into the through hole. The terminal connection structure described. 3. The terminal connection structure further comprises a slide member supported by predetermined support means fixed to the circuit board so as to be able to move toward and away from the circuit board. Along with an insertion hole through which the connection terminal is inserted, along with a peripheral portion of the insertion hole on a surface facing the through hole, with the slide member being slid in a direction approaching the circuit board, 2. The terminal connection structure according to claim 1, wherein an enlarged convex portion is provided to insert the flexible arm portions of the clip body press-fitted and held in the through hole between the flexible arm portions and push them apart. 3.