JP2001126788A - Non-soldering connector used in harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harness connector formed as one piece, without separately requiring a plug and reception connectors in which soldering is not needed for connecting the contact of the connector insulator to a substrate. SOLUTION: This harness connector comprises an insulator for separately holding a plurality of harnesses, pressure contact groove for crimping the harnessed held by the insulator, and contact with a non-soldered resilient contact leg, which is elastically deformed the shape, when pressed against the substrate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a solderless harness connector for connecting a harness (electric wire) to a board without soldering.

[0002]

2. Description of the Related Art Conventionally, for connection between a harness and a board, a two-piece connector including a plug connector and a receptacle connector (receptacle connector) is used, and one contact of the plug connector and the receptacle connector is pressed into contact with the harness. Press-fitting) and soldering the other contact to the wiring pattern on the substrate. The contact of the connector on the board side is inserted into a through hole formed corresponding to each wiring land of the board and soldered (DIP type) or soldered to each wiring land on the board surface (SMT type). .

However, such a conventional harness-to-board connector requires two pieces of a plug connector and a recessed connector, so that the cost is high. further,
Since the soldering operation is indispensable, the problems of increased cost due to the number of soldering steps and poor contact due to defective solder such as solder cracks are inevitable. Further, both the insulator of the board and the connector are required to have heat resistance to withstand the temperature of soldering. Furthermore, recently, attention has been paid to the adverse effect of lead contained in solder on the environment.If a low-melting-point metal containing no lead is used, the melting temperature rises and the heat resistance of the substrate and insulator must be further increased. (A material having excellent heat resistance must be used).

[0004]

An object of the present invention is to provide a connector (insulator) which can be constructed substantially in one piece based on the above-mentioned problem awareness of a conventional harness-to-board connector.
It is an object of the present invention to obtain a solderless harness connector that does not require solder for connecting the contact and the substrate.

[0005]

SUMMARY OF THE INVENTION The present invention provides an insulator for supporting a plurality of harnesses at a distance, instead of using a conventional two-piece connector, for connecting a harness to a substrate;
By using a pressure contact groove for pressing the harness supported by the insulator and a contact having a solderless elastic contact leg which is elastically deformed when pressed on the substrate, the soldering is performed substantially in one piece. An unnecessary solderless harness connector is obtained.

As a specific mode of the insulator, a contact insertion chamber having one end opened as a contact insertion portion is provided, and a pair of harness insertion holes through which a harness is inserted is formed in a wall surface forming the contact insertion chamber. it can. And, when the contact is relatively inserted into the contact insertion chamber,
It is provided so as to be pressed against the harness supported by the harness insertion hole.

The contact may be in any form as long as it has a harness press contact groove and a solderless elastic contact leg. For example, a pair of solderless elastic contact legs that contact the substrate and the pair of solderless elastic contact legs are provided. A pair of pressure contact legs extending in a direction away from the substrate from the elastic contact legs, and a connection portion for connecting ends of the pair of pressure contact legs are provided. In addition, the press-contact groove of the harness can be formed. According to this contact shape, the contact can be held in a stable state on the substrate.

According to another aspect of the present invention, there is provided an insulator having a contact insertion chamber opened at one end as a contact insertion portion; formed on opposing wall surfaces constituting the contact insertion chamber so as to be positioned on lines parallel to each other. A plurality of pairs of harness insertion holes; and a contact inserted from each contact insertion portion of the insulator;
Each contact is characterized by having a pressing groove for pressing the harness supported by the harness insertion hole forming a pair of the insulator, and a solderless elastic contact leg which is elastically deformed when pressed on the substrate.

The contact insertion chamber of the insulator can be made independent for each contact.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A connector 100 for a solderless harness according to the present embodiment includes an insulator (housing) 10;
And a contact 20. The insulator 10 according to this embodiment supports the four harnesses H at a distance from each other.
1 (FIG. 5) is formed in an open hollow rectangular parallelepiped shape. That is, the insulator 10 has a pair of vertical walls 12 and 13 and vertical walls 14 and 15 which are orthogonal to each other with respect to the wiring board B and orthogonal to each other. It is closed by an upper wall (blocking wall) 16. The vertical walls 12 to 15 and the upper wall 16 form a contact insertion chamber 17.

The opposed vertical wall 12 of the insulator 10
And 13 are formed with four pairs of harness insertion holes 18 located on straight lines parallel to each other. On the other hand, mounting grooves 19 for mounting the insulator 10 to a case or the like are formed on the outer surfaces of the other vertical walls 14 and 15 facing each other (FIGS. 1 and 4). The insulator 10 may be formed with a partition 13 ′ (FIG. 2) that forms an independent contact insertion chamber 17 corresponding to each pair of harness insertion holes 18.

As shown in FIG. 3, the contact 20 has a pair of solderless elastic contact legs 21 that contact the wiring board B, and a direction away from the wiring board B from the pair of solderless elastic contact legs 21. It has a pair of press-contact legs 22 extending and a connecting portion 23 connecting upper ends of the pair of press-contact legs 22, and a harness of a harness is provided substantially at the center in the width direction of the press-contact legs 22 and the connection portion 23. A pressing groove 24 is formed. In order to facilitate relative pressure contact of the harness H, the pressure contact groove 24 has a width sufficiently larger than the diameter of the harness H at the inlet portion, and gradually decreases in width toward the inner portion of the pressure contact. Has a width smaller than the diameter of the harness H.

The length of the connection portion 23 of the contact 20 (the distance between the pair of press-contact legs 22) is determined by the length of the insulator 10
The pair of press-contact legs 22 and their connecting portions 23 can be inserted into the contact insertion chamber 17 of the insulator 10. On the other hand, a pair of solderless elastic contact legs 21 extending symmetrically with respect to the center in the longitudinal direction of the connection portion 23 extend in a direction away from each other, and the contact portion with the wiring board B at the tip thereof is Curved surface contact portion 21a bent away from substrate B
Is composed.

The solderless harness connector having the above configuration is used as follows. First, the ends of the harness H are inserted into the harness insertion holes 18 of the insulator 10, respectively. In this state, the contact insertion chamber 11 is moved from the contact insertion portion 11 of the insulator 10 for each harness H.
The contact 20 is inserted into the groove 7, and the harness H is pressed into the pressure contact groove 24 (FIG. 5). Harness H
When press-fitted (press-fitted), the insulating coating is broken, and the inner core wire and the contact 20 are conducted. 1, 2, and 4
Shows a state in which the pressing operation of the contacts 20 to all the four harnesses H has been completed. The harness H is inserted and supported in the harness insertion hole H forming a pair, and the contact 20 is pressed between the pair of supporting portions. Therefore, the deformation and the like of the harness H and the contact 20 are unlikely to occur during the above pressing operation. . In the press-contact completed state, the harness H and the contact 20 are held by the insulator 10 in a state where they are separated from each other, and the mutual positions do not shift. That is, careless conduction does not occur between the harnesses H.

The insulator 10 is fixed to the case C (FIG. 4) of the electronic device using the mounting groove 19 in advance or after the above-mentioned press-contact operation. This case C is connected to the harness H
When it is positioned and pressed against the wiring board B having the wiring pattern P having the same pitch as the above, the curved surface contact portion 21a of the solderless elastic contact leg 21 of the contact 20 comes into contact with the wiring pattern P of the wiring board B and is elastically deformed. (FIG. 4). with this,
Conduction between the wiring pattern P of the wiring board B and the harness H is ensured. The wiring board B and the case C are fixed by appropriate means.

As described above, according to the present solderless harness connector 100, in order to make the harness H and the wiring pattern P of the wiring board B conductive, a two-piece connector of a conventional plug connector and a recessed connector is required. do not do. Furthermore, since soldering is not required, there is no room for environmental problems due to lead contained in the solder, and the wiring board B, the insulator 10, and the like do not require heat resistance. Further, since the solderless elastic contact leg 21 of the contact 20 has the curved surface contact portion 21a that comes into contact with the wiring pattern P, the wiring pattern P is less likely to be damaged. Solderless elastic contact leg 21
Can be formed long so as to ensure a sufficient spring length, and thus can contact the wiring pattern P with a long effective contact length. Further, even if a slight relative moving force is applied to the wiring board B and the case C (the insulator 10), the solder-free elastic contact legs 21 can be deformed or slid with respect to the wiring board B. There is no fear.

In the above embodiment, the direction of the harness H is parallel to the direction of the substrate B, but the direction of the harness H can be set arbitrarily. For example, in a mode in which the harness H extends in a direction orthogonal to the substrate B, the contact insertion portion 11 of the insulator 10 can be on the side orthogonal to the substrate B. Therefore, the shape of the contact 20 also has a degree of freedom. Further, the number of harnesses H to be held in the insulator 10 is arbitrary.

[0018]

As described above, the solderless harness connector of the present invention does not require the use of a two-piece connector as in the prior art, so that the number of components can be reduced and the cost can be reduced. In addition, since the soldering operation is unnecessary, there is no room for problems such as an increase in cost and poor contact due to the soldering operation, and environmental pollution due to lead. Furthermore, since neither the substrate nor the insulator requires heat resistance,
An inexpensive solderless harness connector can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a solderless harness connector according to the present invention in a state before being connected to a board.

FIG. 2 is a plan view of FIG.

FIG. 3 is a perspective view showing a connection state between a contact single body and a harness.

FIG. 4 is a side view of the solderless harness connector in a board connection state.

FIG. 5 is a cross-sectional side view of the insulator, showing a state before connection between the insulator supporting the harness and a contact.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Solderless harness connector 10 Insulator 11 Contact insertion part 12 13 14 15 Vertical wall 16 Upper wall 17 Contact insertion chamber 18 Harness insertion hole 19 Mounting groove 20 Contact 21 Solderless elastic contact leg 22 Pressure contact leg 23 Connection part 24 Pressure contact groove H Harness C Case B Board P Wiring pattern

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5E012 AA08 5E077 BB02 BB11 BB31 CC28 DD14 FF01 GG10 JJ05 JJ30

Claims (5)

[Claims] A contact comprising: an insulator for supporting a plurality of harnesses at a distance; a pressing groove for pressing a harness supported by the insulator; and a solderless elastic contact leg which is elastically deformed when pressed on a substrate. ;
A connector for a solderless harness, comprising: 2. The connector according to claim 1, wherein the insulator has a contact insertion chamber having one end opened as a contact insertion portion, and a pair of harnesses through which the harness is inserted into a wall surface forming the contact insertion chamber. An insertion hole is formed, and the pressure contact groove of the contact is provided so as to be pressed against a harness supported by the harness insertion hole when the contact is relatively inserted into the contact insertion chamber. Solderless harness connector. 3. The connector according to claim 1, wherein the contact comprises a pair of solderless elastic contact legs that contact the substrate, and a pair of press contact legs extending from the pair of solderless elastic contact legs in a direction away from the substrate. And a connecting portion for connecting the ends of the pair of press-contact legs, and a soldering-free harness in which a press-contact groove of a harness is formed substantially at the center in the width direction of the connection portion and the press-contact legs. Connector. 4. An insulator having a contact insertion chamber opened at one end as a contact insertion portion; a plurality of pairs of harnesses formed on opposing wall surfaces forming the contact insertion chamber and positioned on lines parallel to each other. An insertion hole; and a contact inserted from each contact insertion portion of the insulator; wherein each contact is pressed against a board by a pressing groove for pressing a harness supported by a harness insertion hole forming a pair of the insulator. And a solderless elastic contact leg which elastically deforms when exposed. 5. The connector according to claim 2, wherein the contact insertion chamber of the insulator is independent for each contact.