WO2002073747A1

WO2002073747A1 - Wire connector for printed board

Info

Publication number: WO2002073747A1
Application number: PCT/JP2002/002268
Authority: WO
Inventors: Yosihide Imaoka; Yasuhiro Kimura; Satoru Uehara; Tetsuya Matsumoto; Atsushi Satoh; Norio Shimizu
Original assignee: Matsushita Electric Works, Ltd.
Priority date: 2001-03-09
Filing date: 2002-03-11
Publication date: 2002-09-19
Also published as: CN1457536A; CN1301569C; DE10290399T5

Abstract

A wire connector which is mounted on a printed board for narrowing the pitch of an wire insertion holes while maintaining the insulation performance. The wire connector comprises a box-shaped housing (1, 2) having an opening (5) in its one face, a conductive plate (4) for electrical connection housed inside from the opening (5), a cover (3) closing the opening (5), and a wire insertion holes (7) through which wires to be connected with the conductive plate (4) are passed. Each of the wire insertion hole (7) is defined by a wire insertion groove (7) formed in the edge part of the opening (5) and the opposed face of the cover (3). Therefore, the wire insertion part of the housing can be thickened, so that the pitch of the wire insertion holes (7) can be narrowed while maintaining its insulation performance .

Description

Wire connector for printed circuit boards

Technical field

The present invention relates to an electric wire connector mounted on a printed circuit board for lighting equipment and the like, wherein the number of electric wire connection poles can be arbitrarily increased by connecting a plurality of electric connectors, and the electric wire can be connected by a touch. The present invention relates to an electric wire connector having a connectable quick connection terminal. Background art

Conventionally, in this type of wire connector, as shown in FIG. 31, the housing of a plurality of wire connectors 100 mounted on a printed circuit board 101 is interconnected to reduce the number of poles. In some cases, an increased number of electric wires can be connected (for example, Japanese Utility Model Application Laid-Open No. 6-212157). However, the connection method was performed by press-fitting the columnar projections and holes, so a jig was required for assembly, and the bonding force was weak, and there was a possibility that it could easily come off. . Furthermore, if the positions of the projections and holes are slightly shifted due to manufacturing accuracy problems, a large shift will occur in a large number of connections, and there will be a gap between the printed circuit board 101 and the wire connector 100. 3 occurred and many implementations were defective. In addition, there is a terminal device that is connected and assembled by a slide method (for example, Japanese Patent Application Laid-Open No. 5-182700), but because of the slide method, the terminal device easily comes off in the slide direction.

Further, as shown in FIG. 32 (a), a plurality of box-shaped housings 1002a, 102 which have an opening 102 on one surface in the connection direction and are connected in parallel so as to close the opening. b, a conductive plate (not shown) for electric wire connection housed inside each of the openings 102, and a cover 104 for closing the opening 102 of the housing 102 a at one end. There is a connection type wire connector provided. Wire insertion holes 105 for inserting wires to be connected to the wire-connecting conductive plate are formed in the housings 102a and 102b, respectively. In FIG. 32 (b), A is the pitch between the wire insertion holes 105, and b is the dimension from the hole edge to the outer surface of the housings 102a and 102b.

When the thickness of the opening of each housing 102a, 102b is reduced in the opening direction, a wire connector with a narrow pitch A can be obtained. Since it does not change, the dimension b is reduced, and the portion of the wire insertion hole 105 becomes thinner, so that it becomes difficult to secure the insulation performance of the housings 102a and 102b. for that reason, If the necessary thickness is secured in the thin portion, the pitch of the electric wire insertion hole is increased accordingly. Figure 33 shows the internal structure of the connection type wire connector. The conductive plate 106 is housed in the housing of the electric wire connector 100. The conductive plate 106 is formed by bending a band plate into a substantially triangular shape and forming both ends at its apex position, and a quick-connecting terminal having a locking spring 107 holding an electric wire at both ends. . The lock spring 107 is formed at one end of the conductive plate 106, and the contact piece 108 is formed at the other end, and both are opposed to each other. A lead portion 109 connected to the printed circuit board by soldering extends from the bottom of the conductive plate 106. The housing has a substantially rectangular parallelepiped shell having a mounting surface 110, and the wire insertion direction (arrow) of the wire insertion hole 105 is set on the mounting surface 111 from one end of the surface facing the mounting surface 110. It is almost diagonal toward 0.

Here, in order to reduce the mounting area on the printed circuit board, the mounted components must be reduced. It is necessary to secure a sufficient connection length (including the strip length) between the conductive plate and the electric wire with a smaller mounting component, and to ensure the springiness of the conductive plate, and also to ensure the strength of the electric wire holding. Also, when connecting and inserting wires, it is necessary to ensure that the moderation (click feeling) of completion of insertion is clearly obtained. In addition, it is necessary to reduce the weight of the conductive plate to reduce the work load on the mounter and the load on the printed circuit board. Also, in order to realize multi-polarization, the connected multiple housings were thinned and had a narrow pitch. Therefore, the cross-sectional area of the conductive part of the quick connection terminal is reduced, and the contact piece is a one-point contact. In addition, there was a problem that it was difficult to reduce the pitch because the insulation distance had to be secured.

Therefore, an object of the present invention is to solve the above-mentioned various problems, and an object of the present invention is to provide an electric wire connector capable of narrowing a pitch of an electric wire insertion hole while securing insulation performance.

Another object of the present invention is to provide an electric wire connector that can be easily assembled and reliably connected.

Another object of the present invention is to provide an electric wire connector capable of securing the resilience of the conductive plate and ensuring a good contact state of the electric wires while reducing the size of the connector. Another object of the present invention is to provide an electric wire connector capable of performing two-point contact without increasing the number of parts. Disclosure of the invention

The present invention relates to an electric wire connector attached to a printed circuit board, comprising: a box-shaped housing having an opening on one surface; a conductive plate for electric wire connection housed inside the opening; and a cover for closing the opening. And a wire insertion hole for inserting a wire connected to the conductive plate, wherein the wire insertion hole is formed by a wire insertion groove formed at an edge of the opening and an opposing surface of the cover. Formed. As a result, the thickness of the wire insertion hole portion of the housing can be increased, so that the pitch of the wire insertion holes can be reduced and the insulation performance can be ensured.

In the above, a separate housing having the same structure as the housing and accommodating a conductive plate through an opening is provided, and the opening of the another housing is closed by a side surface opposite to the opening of the housing. Was connected to the housing. As a result, the number of poles can be increased and the overall shape can be reduced. Further, the separate housing may be provided with a groove for forming a wire insertion hole on a surface of the housing facing the wire insertion groove.

The electric wire insertion hole may have a plane portion perpendicular to an opening surface of the housing. As a result, an external force applied to the electric wire can be received at the flat portion.

Further, the present invention includes a plurality of housings of the same shape accommodating a conductive plate, wherein each of the housings has a connection claw formed of an elastic piece provided on one surface in a connection direction thereof, and a surface opposite to the one surface. And a hole which is provided on the same axis as the connecting claw, and into which the connecting claw of the adjacent housing is inserted, and a step which locks the connecting claw in the hole is provided. Thus, the number of poles can be changed by connecting a plurality of housings having the same shape, and the housings are connected to each other by the connecting claws, so that the connection strength is high and the housings can be reliably connected. Also, even if the number of connections is increased, it is not necessary to press-fit them, so they can be connected almost straight, and the steps for hooking the connection claws are provided in the holes, so they cannot be easily removed by external force. In the above, the conductive plate has a locking spring for holding a connection wire, and the housing ′ opens a storage space for storing the locking spring on a front surface, and has an insertion hole for inserting the connection wire on a side surface. An end cover that protrudes a connection claw from an opening side of the storage space and closes the housing opening aligned with an end of the housing; and a hole for inserting the connection claw in the end cover; It is also possible to provide a step for locking the claw in the hole.

Further, in the present invention, the conductive plate is formed by bending a band plate into a substantially elliptical shape, and forming a quick-connecting terminal having a locking spring for holding an electric wire by both ends of the band plate. In the housing, the outer shell having the mounting surface is a substantially rectangular parallelepiped, and the wire insertion direction is a substantially diagonal direction from one end of the side opposite to the mounting surface to the mounting surface. The conductive plate is housed in the housing such that the major axis direction is substantially the same as the electric wire insertion direction, and the electric wire is inserted from a joint portion of both ends of the conductive plate. This makes the arrangement of the conductive plate oblique and increases the wire connection length, so that unstable contact due to incomplete insertion is not likely to occur, and a good contact state can be obtained. Since the arrangement of the conductive plates is oblique and the shape is substantially elliptical, the spring property is good, and a good contact state can be obtained without reducing the holding strength of the electric wire. Since it is in contact with the electric wire at both ends of the substantially elliptical shape, two electric paths can be secured, so it has excellent electric conductivity. Processing is easy because the shape is a belt shape.

The tip of the locking spring may be bent toward the outside of the substantially elliptical conductive plate so as to contact the electric wire at an angle. Thereby, it is easy to bite into the electric wire conductor, and a better contact state can be obtained. In addition, since the difference in the wire insertion force when the wire passes through the locking spring is large, the moderation of the completion of the insertion becomes clearer.

The movable side of the conductive plate may be located on the mounting surface side with respect to the axis in the wire insertion direction.

Further, the present invention provides the quick-connecting terminal, comprising: a locking spring integrally formed with the terminal portion; a notch provided in the terminal portion so as to be narrower in a width direction; What is necessary is just to hold and hold the electric wire between the remaining portion and the locking spring. As a result, two-point contact can be ensured, improving contact reliability. Can be secured in two ways and the current capacity can be increased. In addition, since it is composed of one part, the number of assembly steps can be reduced, and material costs can be reduced. In addition, by providing the notch, the wire release can be applied from the direction of the force by which the locking spring holds the wire and the direction of the reaction, thereby facilitating the wire release. Furthermore, since the release force can be applied in the direction in which the release force is most effective at the place where the wire is held, the release of the wire is facilitated.

In the above, there is provided an unlocking button for releasing a wire by applying a force in a direction substantially opposite to a force in the direction of pinching the electric wire by the locking spring of the quick-connecting terminal to the locking spring. It may be arranged in the notch of the terminal part. This makes it easy to position the unlock button, and it is convenient to assemble by inserting the unlock button and the quick-connecting terminal through the opening in the housing in this order.

Further, the housing has an unlocking button hole through which the unlocking button is slidably slidable, and the unlocking button is in contact with the housing to prevent excessive pushing, A locking portion which is locked to the housing to lock the unlocking button. This prevents deformation of the quick-connecting terminal due to excessive pressing of the unlock button, and improves operability. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is an exploded perspective view of a wire connector according to an embodiment of the present invention.

FIG. 2 is an overall perspective view.

FIG. 3 is a perspective view seen from the opposite direction to FIG.

Fig. 4 (a) is a view from the front of the wire insertion hole explaining the wire insertion hole.

4 (b) is a sectional view taken along line AA of FIG. 4 (a).

FIG. 5 is a front view when the end cover is open and no electric wires are connected. FIG. 6 is a front view of the state where the end cover is opened and the electric wire is inserted.

FIG. 7 is a front view showing a state where the unlock button is pushed in with the end cover opened.

FIG. 8 is an exploded perspective view of the electric wire connector.

FIG. 9 is an exploded perspective view seen from the opposite side to FIG. FIGS. 10 (a) and 10 (b) are explanatory diagrams illustrating the pitch of the wire insertion holes. FIG. 11 is a front view showing a state where the semiconductor device is mounted on a printed circuit board.

FIG. 12 is a sectional view taken along line AA of FIG. ,

FIG. 13 is a perspective view showing a state in which a printed circuit board on which a wire connector is mounted is incorporated in a case.

FIG. 14 is a perspective view showing the connection of the housing.

FIG. 15 (a) is a front view of a state of being mounted on a printed circuit board of another embodiment, and FIG. 15 (b) is a cross-sectional view taken along line BB of (a).

FIG. 16 (a) is a front view showing a state where the printed circuit board is mounted, and FIG. 16 (b) is a front view showing an arrangement of conductive plates.

Fig. 17 (a) is a front view of the state where the wire is inserted into the conductive plate with the bent end of the locking spring, and Fig. 17 (b) is the wire inserted into the conductive plate where the end of the locking spring is not bent. FIG. 5 is a front view of the inserted state.

Fig. 18 is a diagram showing the relationship between the wire insertion position and the wire 揷 input.

FIG. 19 (a) is a perspective view of the conductive plate, and FIG. 19 (b) is a plan view in an expanded state. Fig. 20 (a) is an explanatory diagram of the dimensional relationship when an electric wire is inserted into a substantially elliptical conductive plate, and Fig. 20 (b) is an explanatory diagram of the dimensional relationship when an electric wire is inserted into a substantially triangular conductive plate. You.

FIG. 21 (a) is a perspective view of a substantially elliptical conductive plate, and FIG. 21 (b) is a perspective view of another substantially elliptical conductive plate.

FIG. 22 (a) is an explanatory view showing a state where the lead portion of the quick connection terminal is inserted into a printed circuit board, FIG. 22 (b) is a side view thereof, and FIG. 22 (c) is a partial plan view of the printed circuit board. .

FIG. 23 is a perspective view of the quick connection terminal with the electric wires connected.

FIGS. 24 (a), (b), and (c) are partial plan views of the quick-connecting terminal obtained from the quick-connecting terminal supply material in a developed state before separation.

FIG. 25 is a bottom view of a connector in which a plurality of housings are connected.

Figure 26 is a side view.

FIGS. 27 (a), (b) and (c) are perspective views of quick-connecting terminals according to different embodiments. is there.

28 (a), (b) and (c) are perspective views of quick-connecting terminals according to different embodiments.

FIG. 29 is a perspective view of a quick connection terminal according to still another embodiment.

FIGS. 30 (a), 30 (b), and 30 (c) are perspective views of quick connection terminals according to different embodiments.

FIG. 31 is a perspective view showing a state of being mounted on a conventional printed circuit board.

FIG. 32 (a) is a perspective view of a conventional example, and FIG. 32 (b) is a diagram for explaining a pitch of an electric wire insertion hole.

FIG. 33 (a) is a side view of a conventional conductive plate, and FIG. 33 (b) is a front view of its housing. BEST MODE FOR CARRYING OUT THE INVENTION

A first embodiment of the present invention will be described with reference to FIGS. In these figures, the wire connector (hereinafter referred to as the connector) as a terminal block attached to the printed circuit board consists of the housings 1 and 2, which are the body, the cover 3 (end cover), and the housings 1 and 2. It has a stored conductive plate 4 for connecting electric wires.

The housings 1 and 2 have the same shape, are box-shaped having an opening 5 on one surface in the connection direction, and are connected to each other. The housings 1 and 2 are made of synthetic resin and have a substantially rectangular shape when viewed from the opening 5 side. The housings 1 and 2 have a storage space 6 for storing the conductive plate 4 on the front surface and a wire insertion hole 7 on the side surface. The wire insertion hole 7 is formed diagonally in one corner of the housing by a groove (wire insertion groove) provided on a corner opening surface of the housing. As shown in Figs. 4 (a) and 4 (b), this groove is larger than the core wire 25a of the inserted wire 25 and has a deep groove 7a for inserting the sheath, and the core wire 2a. It consists of a shallow groove 7b passing through 5a. A groove 7c for forming an adjacent wire insertion hole 7 is formed at a position opposite to the opening 5 and corresponding to the groove 7a. An unlock button 9 is provided adjacent to the wire insertion hole 7, and the unlock button 10 is inserted into the through hole 9 so that it can freely enter and exit, and the button retaining projection 11 is an unlock button.揷 It is caught by the locking portion 9a formed on the outer edge of the through hole 9, and is prevented from falling off. The housings 1 and 2 are provided with connecting claws 18 made of a resilient piece on the side of the opening 5 in the connecting direction, and with holes 19 for inserting the connecting claws 18 of the adjacent housing on the opposite side. A step 19 a is formed on the side surface of the hole 19. As in the above, housings 1 and 2 are provided with positioning ridges 22 on one surface and concave portions 23 on opposite sides. A positioning projection 6b is formed in the opening 5, and a recess 27 is formed on the opposite side. The lower surfaces of the housings 1 and 2 serve as mounting surfaces 2a for mounting on the printed circuit board, and lead-out holes 8 for the lead portions 12 of the conductive plate 4 are formed at two places separated from this surface.

The conductive plate 4 is housed in the housing space 6 through the openings 5 of the housings 1 and 2. As the conductive plate 4, a metal spring plate is bent into a substantially elliptical shape, and is housed in the opening 5. The conductive plate 4 is inserted so that the plane of the conductive plate 4 is perpendicular to the opening surface of the opening 5. One end of the conductive plate 4 is a contact piece (terminal part) 14, and the other end is close to the inside of the contact piece 14 to form a lock spring 13. The contact piece 14 is disposed on an extension of the wire insertion hole 7 inward and facing the unlock button 解 through hole 9 in an inclined posture parallel thereto. A lead portion 12 connected to the printed board is formed integrally with the conductive plate 4 by cutting and raising the middle portion.

The locking spring 13 and the contact piece 14 of the conductive plate 4 constitute a quick connection terminal for holding the electric wire 25. A notch 15 is formed on one side of the contact piece 14, and the tip 10 a of the unlocking button 10 is passed through the notch 15 to be in contact with the lock spring 13. The conductive plate 4 is arranged so that the lead portion 12 passes through the lead extraction hole 8, and the tip of the locking spring 13 is directed inward inside the wire insertion hole 7. Positioning is performed by the projection 6a provided in the peripheral wall to be formed and the storage space 6. In order to shift the positions of the lead portions 1 and 2 drawn out of the housings 1 and 2, the cut and raised positions of the lead portions 1 and 2 are changed, and the lead portions 1 and 2 of the conductive plate 4 housed in the housing 1 are located at the center. The lead portion 12 of the conductive plate 4 housed in the housing 2 is inserted through the lead hole 8 on the side.

The unlocking button 10 is slidably inserted into the unlocking button through hole 9, and its tip 10 a passes near the contact piece 14 and rides on the locking spring 13. Therefore, when the unlock button 10 is pushed in, the lock spring 13 is pushed and elastically deformed, and the contact piece 14 Separate and unlock the wires. In other words, the unlock button 10 applies a force in a direction substantially opposite to the force in the direction of pinching the wire by the lock spring 13 to the lock spring 13 to release the electric wire. The unlocking button 10 is provided with a restricting part 10b that comes into contact with the housing when pressed in to prevent it from being pushed too far, and a locking projection 11 that comes into contact with the locking part 9a of the housing to prevent it from being pulled out. Have.

The cover 3 is made of a rectangular flat plate made of an insulating material, for example, a synthetic resin, and closes the opening 5 of the housing 2. The cover 3 has a groove 7 d corresponding to the wire insertion hole 7 of the housing 1, a recess 23 corresponding to the positioning ridge 22, and a hole 19 corresponding to the connecting claw 18. Step portions 19a are formed, and concave portions 27 corresponding to the positioning protrusions 6b are formed. The groove 7d is shaped to insert the sheath of the electric wire.

The connecting claws 18 are arranged on both sides of the locking spring 13 with respect to the insertion direction of the electric wire 25. Further, a part of the connecting claw 18 is provided near the electric wire insertion hole 7. Further, the projecting directions of all the plurality of connecting claws 18 are substantially the same direction, and are substantially parallel to the terminal block mounting surface 2a. In such an arrangement, the connecting claws 18 can be set large, so that the connecting strength can be improved.

When assembling the connector, the conductive plate 4 is housed in the housings 1 and 2 from the opening 5, the lead 12 is pulled out from the drawing hole 8, and the unlocking button 10 is inserted into the through hole 9. The tip 10a is placed on the locking spring 13 and the retaining projection 11 is retained and locked on the locking portion 9a. Cover the opening 5 of the housing 2 with the cover 3, insert the positioning protrusion 6 b into the recess 27 while fitting the positioning ridge 22 into the recess 23, and insert the connecting claw 18 into the hole 19. Hook on. The housing 1 is connected to the housing 2 so that the opening 5 of the housing 1 (another housing referred to in the claims) is closed by a side surface of the housing 2 opposite to the opening 5.

By these connections, the cover 3 is attached to the housing 2, the housing 1 is attached to the housing 2, the opening 5 containing the conductive plate 4 and the unlock button 10 is closed in each case, and the conductive plate 4 is closed. The wire insertion hole 7 for inserting the wire to be connected to the wire is formed. That is, one wire insertion hole 7 is formed by grooves 7 a and 7 b formed on the edge of the opening 5 of the housing 2 and a groove 7 d on the facing surface of the cover 3, and another The wire insertion hole 7 is formed by grooves 7 a and 7 b formed at the edge of the opening 5 of the housing 1 and a groove 7 c of the housing 2. When the wire is inserted into the wire insertion hole 7, the sheath of the wire is inserted into the hole formed by the groove 7a and the groove 7d or 7c, and the core wire is the groove 7b and the end face of the cover 3 or housing 2. Penetrates the hole formed by.

In the connector of this embodiment, since the wire insertion hole 7 is formed by two parts, the mold structure for one part is simplified. In the case of the conventional example, a slide structure is required with a mold to form the wire insertion hole, but since the wire insertion hole is not formed by one component, the slide structure is unnecessary. Further, the lead portion 12 of the conductive plate 4 is drawn out through a drawing hole 8 provided in each of the housings 1 and 2. When the lead-out positions are different, an insulation distance between the lead portions 12 can be ensured. In the above embodiment, two housings 1 and 2 are shown. However, three or more housings may be sequentially connected in parallel, or may be constituted by one housing 2 and cover 3. Whatever is done.

Next, details of the wire insertion hole 7 will be described with reference to FIGS. The groove 7a for inserting the electric wire in each housing 1 and 2 has a groove depth larger by the dimension Q than the depth from the center P of the electric wire insertion hole 6, and a plane perpendicular to the opening surfaces of the housings 1 and 2. The portions 7e are respectively formed. Thereby, the groove 7a has a depth that the thickness of the insulating coating portion of the electric wire 25 can be sufficiently accommodated. The groove 7b through which the core wire 25a is inserted has a substantially square cross section, and has a depth equal to or less than a depth which is a hole diameter enough to accommodate the inserted core wire 25a.

As described above, since the depth of the wire connecting groove is larger than the diameter of the core wire of the wire, even if an external force is applied to the wire, the cover 3 and the housing 2 or the separate housing 1 and the housing 2 are not easily separated. . In addition, when an external force is applied to the wire, the covering portion mainly contacts the flat portion 7 e, which is a groove whose groove depth is larger than the center P of the wire insertion hole 7 by the dimension Q, and the core wire 25 a Abuts the rectangular grooves 7b of the housings 1 and 2, so that the external force applied to the electric wire is received by one part, and the cover 3 and the housing 2 or another housing 1 and the housing 2 cannot be separated easily. .

Next, details of the unlock button 10 will be described with reference to FIGS. With the retaining projection 11 of the unlock button 10 locked in the locking portion 9a, release the unlock button 10 The distal end 10a slightly presses the locking spring 13. Since the quick-connecting terminal is pressed before inserting the wire, the wire 25 can be inserted without difficulty at the start of the wire insertion (Fig. 6). Fig. 7 shows a state in which the release button 10 is pushed in the direction of the arrow and the restricting portion 10b is in contact with the housing, thereby restricting the lock spring 13 to an elastic deformation range where no excessive force is applied. Terminal plastic deformation is prevented. Since the release button 10 is regulated by the release button insertion hole 9, the button does not come out after the release button 10 is assembled, and the position of the button sliding can be regulated easily and reliably. Further, since the unlock button 10 has a configuration in which the sliding area of the unlock button 10 with respect to the housing can be easily increased, the operation of the unlock button can be reliably performed without rattling.

Next, the pitch of the wire insertion hole 7, in this case _c described with reference to FIG. 1 0 (a) (b) , represents the wire揷入hole 7 in a circle. Assuming that the pitch A between the wire insertion holes 7 is the same as the conventional example shown in FIG. 32 (b) described above, by setting the wall thickness c to b <c≤2b (conventionally, the distance between holes However, the insertion hole pitch can be made narrower without lowering the outer shell strength than before.

FIGS. 11 and 12 show a state in which the above-described connector is mounted on a printed circuit board. The lead 12 of the connector is inserted into the hole of the printed circuit board 32, the mounting surface 2a is mounted on the printed circuit board 32, and soldering 33 is performed. Since the connecting claw 18 is a natural piece, a clearance 35 in the locking direction of the connecting claw 18 is provided between the connecting claw 18 and the hole 19, and between the both side surfaces of the connecting claw 18 and the opposing surface of the hole 19. A clearance 36 can also be provided. Thereby, the mutual alignment of the housings 1 and 2 can be adjusted. Figure 13 shows an example of using a connector. A plurality of connectors are mounted on the printed circuit board 32, electronic components 39 are mounted, housed in the case body 37, and covered with the case cover 38.

FIG. 14 shows a form in which housings 41 to 43 of the same shape are added and a total of five housings are connected. The number of poles can be increased by connecting and connecting a set of one pole (housing, conductive plate 4, unlock button 10). Also, since the connecting direction and the assembling direction are the same, the assembling becomes easier as compared with the conventional slide type. A modification of the connector according to the present invention will be described with reference to FIGS. 15 (a) and 15 (b). In the above-described embodiment, the projecting directions of all the connecting claws 18 are substantially perpendicular to the mounting surface 2a. It has become. The mounting surface 2a is placed on the printed circuit board 32, and the lead 12 is inserted into the hole and soldered 33 to mount. At this time, fine adjustment between the housings 1 and 2 should be performed using the clearance 34 between both side surfaces of the connecting claw 18 and the opposing surface of the hole 19 and the clearance of the connecting claw 18 in the elastic deformation direction. The front and rear of housings 1 and 2 can be aligned with the plane position.

Note that three or more housings may be stacked. Further, although the connecting claw 18 is provided on the opening 5 side of the housings 1 and 2, it may be provided on the back side of the cover 3 and the housing 2, and a hole may be provided on the periphery of the opening 5. The connector can be composed of the cover 3 and the housing 2 alone. Furthermore, the terminals were of the quick-connect type, but are not limited to this.

Next, a specific configuration example of the conductive plate will be described. 16 (a) and 16 (b) show a state where the connector is mounted on the printed circuit board 32. FIG. The mounting surface of the housing 1 is placed on the printed circuit board 32, and the lead portion 12 protruding from the mounting surface is passed through the hole 40 of the printed circuit board 32 and soldered 33. The electric wire is inserted in the electric wire insertion direction from the electric wire insertion hole 7, but the conductive plate 4 is formed longer in the electric wire insertion direction since the substantially elliptical long axis L is located in that direction. Therefore, a sufficient length for obtaining the spring property can be obtained.

FIGS. 17A and 17B show a state in which the electric wire 25 is inserted into the conductive plate 4. When the wire 25 is inserted between the lock springs 13 provided at both ends of the conductive plate 4 and the contact pieces 14 and pushed over the lock spring 13, the electric wire 25 is connected to the lock spring 13. It is pushed by the contact piece 14, and the tip 13 a of the locking spring 13 bites into the peripheral surface of the electric wire 25 to prevent it from being removed. FIG. 17 (a) shows the conductive plate 4 with the tip 13a bent toward the electric wire 25, and FIG. 17 (b) shows the conductive plate 4 'which is not bent. Assuming that the angle at which the tip 13 a of the locking spring 13 faces the electric wire 25 is θ 1 for the bent conductive plate 4 and Θ 2 for the unbent conductive plate 4 ′ as shown in the figure, θ 1〉 Θ As shown in Fig. 17 (a), better contact can be obtained by cutting into the wire 25. The tip of the locking spring 13 need not be bent.

FIG. 18 shows the electric wire input of each of the conductive plate 4 shown in FIG. 17 (a) and the conductive plate 4 ^; shown in FIG. 17 (b). The horizontal axis is the wire insertion position (distance), and the vertical axis is the wire input. Q 1 is the wire 揷 input of the bent conductive plate 4, Q 2 is the unbent conductive plate 4 ′ The wire insertion force. M 0 indicates the position where the wire abuts the lock spring 13, M 1 indicates the position where the end of the wire passes through the lock spring 13, and position M 0 indicates that the 揷 input is 0, and the lock spring is above M l This is the insertion force due to the friction of 13. The maximum input powers Fl and F2 with respect to the input power due to friction of the conductive plate 4, A 'are F1> F2 due to the above θ1> 02. Therefore, it is clear that the connection has been securely inserted, and the difference between the wire and the input makes the moderation (click feeling) clearer.

FIGS. 19 (a) and 19 (b) show the conductive plate 4 and its expanded state. The conductive plate 4 is bent at only a broken line portion and is formed in a substantially elliptical shape. Since one conductive plate can be formed within a fixed width H, there is little waste of material.

Figures 20 (a) and (b) compare the dimensions of a substantially elliptical conductive plate and a substantially triangular conductive plate. Assuming that the three-sided dimensions of the substantially triangular conductive plate are a, b, and c, and the dimensions a of the contact pieces are the same, the portions of the substantially elliptical conductive plate corresponding to b and c are b + a. , C-/ 3, and <^, the substantially elliptical conductive plate has a shorter peripheral length and can be reduced in weight.

FIG. 21 to FIG. 26 show various embodiments of the quick connection terminal 45. The quick-connecting terminal 45 is formed by integrally forming the locking spring 13 and the contact piece 14, and the notch 46 is formed in the contact piece 14 so that the width direction becomes narrower. The wire is sandwiched and held between the remaining portion 47 of the contact piece 14 in the width direction and the locking spring 13. In the embodiment, a strip-shaped conductive plate is formed in a substantially bowl shape to form a quick-connecting terminal 45, one end of which is a locking spring 13, the other end of which is a contact piece 14, and a contact piece 14. Is narrower than the lock spring 13 by the width corresponding to the notch 46. By adopting such a configuration of the quick-connecting terminals 45, the unfolded shapes at the time of manufacturing are arranged in a horizontal direction as shown in FIG. 24 (a), or vertically in a line as shown in FIG. 24 (b). As shown in Fig. 24 (c), it is possible to use a quick-connecting terminal supply material, that is, a hoop material, which is vertically arranged in two rows, and the hoop material can be made substantially rectangular, thereby improving the material yield. In addition, the amount of material used can be reduced by winding a thin strip.

The portion 47 left by the notch 46 of the contact piece 14 extends from the wire insertion side end toward the insertion side of the wire 25, as shown in FIG. At this time, the notch 46 is opposite to the opening of the housing space of the housing for housing the quick connection terminal 45, that is, the back. It is formed to be located on the side. With this configuration, when the notch 46 is used for releasing the electric wire, when the unlocking button 10 for releasing the electric wire is formed by another member, the position can be easily determined. The notch 46 of the quick connection terminal 45 presses the unlock button when assembling the housing in the stacking direction, so that the assemblability is improved.

Further, the lead portion 12 of the quick connection terminal 45 is located on the opposite side of the locking spring 13 as shown in FIG. In the embodiment, the lead portion 12 is formed by cutting and raising the width of about half the width of the band plate so as to be located on the opening side of the housing. In addition, the lead portion 12 is formed thicker at the base side than the lead portion insertion hole 40, excluding the tip side portion that enters the lead portion insertion hole 40 of the printed circuit board 32. An arc-shaped bent portion is formed in a portion penetrating the lead portion insertion hole 40 of the portion. W in FIG. 22 (b) is the diameter of the lead portion insertion hole 40. The lead portion 12 inserted through the lead portion insertion hole 40 is soldered 33 and fixed to the printed circuit board 32. As a result, the movement is most fixed near the lead portion 12 of the quick connection terminal 45, and the locking spring 13 located on the side opposite to the lead portion 12 is the portion where the movement is greatest. Since the solder flows into the lead hole 40, the cross-sectional area may be smaller than the current capacity. However, the larger the cross-sectional area of the upper surface than the printed circuit board 32 is, the better the current capacity is. In addition, the step portion 48 is formed by the base portion becoming thicker, and the step portion 48 is positioned when joining to the printed board 32. Since the hole diameter W of the lead insertion hole 40 can be reduced, the inflow range of the solder does not become unnecessarily large, and the lead insertion hole 40 can be a round hole.

When the lead portion 12 of the quick-connect terminal 45 is arranged on the side of the housing opening (see FIGS. 25 and 26), if the lead portion 12 is formed by cutting and raising, As shown in Fig. 23, the tip of the wire 25 passes through the narrowed portion, so that the insertion depth of the wire 25 can be sufficiently large, and thus the entire length of the quick connection terminal 45 Can be shortened. Further, the thickness a of the cover 3 and the dimension a ′ from the back side of the housing 1 to the lead portion 12 can be made substantially equal, and the insulation distance can be increased. Further, since the lead portion 12 is located on the opening side, it is easy to insert the quick connection terminal 45 into the housing space of the housing when assembling. As shown in FIG. 21 (b), the lead portion 12 may have a different cut-and-raised position. In this case, the lead shall be inserted through the lead insertion hole in the middle of the housing to increase the insulation between the leads 12.

27 to 30 show still another embodiment of the quick connection terminal. FIG. 27 (a) shows a form in which the notch 46 is formed so as to be on the opening side of the housing. FIGS. 27 (b) and (c) show forms in which the positions of the lead portions 12 are different. FIG. 28 (a) shows a form in which the position of the notch 46 in the above embodiment is different. FIGS. 28 (b) and (c) show forms in which the positions of the leads 12 are different. In FIG. 29, the quick connection terminal has a conductive plate portion 49, a contact piece 14 is bent on one side, a bent portion 50 is formed on the other side, and a lead portion is formed on the bent portion 50. 1 and 2 and a lock spring 13 are formed.

Fig. 30 (a) shows a belt-shaped conductive plate bent into a substantially U-shape, and the tip of the -side piece 53 is turned inward to form a locking spring 13; The portion facing 13 is cut out to form an electric wire insertion portion 52, and a part of the other side piece 54 is used as a contact piece 14. In this example, the wires are inserted from the upper left as shown by the arrows. FIG. 30 (b) shows a form in which the wire insertion portion 52 is formed by a long hole. In Fig. 30 (c), a locking spring 13 is formed by raising and lowering the center piece 55, and the opposite side piece 53 is formed as a contact piece 14 by cutting and raising the center piece 55. In this mode, the electric wire is inserted from the narrow portion. Each wire is inserted between the locking spring 13 and the contact piece 14.

The hole 19 into which the connecting claw 18 for connecting the cover 3 to the housings 2 and 1 is fitted is formed on the side surface different from the lead drawing hole 8 and communicates with the storage space 6. Therefore, even if water enters the storage space 6 through the gap between the wire insertion hole 7 and the unlock button 10, the water flows out from the hole 19 to the outside of the side surface. In this case, since the lead portion 12 and the hole 19, which are the charged portion, are provided on different surfaces from each other, that is, on a surface different from the surface to be attached to the printed circuit board, the insulation distance can be increased. As a result, the water can be kept away from the charging section to prevent the tracking phenomenon. Industrial applicability

The electric wire connector according to the present invention is mounted on a printed circuit board such as a lighting circuit for a lighting fixture, and the number of electric wire connection poles can be arbitrarily increased by connecting a plurality of electric connectors. It is suitable for a device having a quick connection terminal that can be connected.

Claims

1. In a wire connector attached to a printed circuit board,

A box-shaped housing having an opening on one side,

A conductive plate for electric wire connection housed from the opening,

A cover for closing the opening,

An electric wire insertion hole for inserting an electric wire connected to the conductive plate.

The electric wire connector, wherein the electric wire insertion hole is formed by an electric wire insertion groove formed on an edge of the opening and an opposing surface of the cover.

2. It has the same structure as the housing, and has a separate housing containing a conductive plate from the opening,

The electric wire connection according to claim 1, wherein the another housing is connected to the housing so that an opening of the another housing is closed by a side surface opposite to an opening of the housing.

3. The electric wire connector according to claim 2, wherein the separate housing is provided with a groove for forming a wire insertion hole on a surface of the housing facing the wire insertion groove.

4. The electric wire connector according to claim 1, wherein the electric wire insertion hole has a flat portion perpendicular to an opening surface of the housing.

5. Equipped with a plurality of housings of the same shape containing conductive plates,

Each of the housings includes a connecting claw formed of an elastic piece provided on one surface in a connecting direction thereof; and a connecting claw of an adjacent housing provided on a surface opposite to the one surface on the same axis as the connecting claw. 3. The electric wire connector according to claim 2, further comprising a hole into which the hole is inserted, and a step for locking the connecting claw in the hole.

6. The conductive plate has a locking spring for holding a connection wire,

The housing has a storage space for storing the locking spring opened in the front surface, an insertion hole for inserting the connection wire on a side surface, and a connection claw protruding from the opening side of the storage space.

An end force bar for closing the housing opening aligned with an end of the housing, wherein the end cover is provided with a hole for inserting the connection claw, and a step portion for engaging the connection claw with the hole. Item 5. Wire connection device according to item 5.

7. The conductive plate is formed by bending a band plate into a substantially elliptical shape and forming quick-connecting terminals having locking springs for holding electric wires at both ends of the band plate.

In the housing, an outer shell having a mounting surface is a substantially rectangular parallelepiped, and a wire insertion direction is a substantially diagonal direction from one end of a side opposite to the mounting surface to the mounting surface,

The conductive plate is housed in the housing such that the major axis direction of the ellipse of the conductive plate is substantially the same as the wire insertion direction,

The electric wire is inserted from a joint portion of both ends of the conductive plate.

Wire connector according to 1.

8. The electric wire connector according to claim 7, wherein a tip end of the locking spring is bent so as to face the outside of the substantially elliptical conductive plate and to contact the electric wire at a certain angle.

9. The electric wire connector according to claim 7, wherein the movable side of the conductive plate is located on the mounting surface side with respect to the axis in the electric wire insertion direction.

10. The quick-connecting terminal comprises an integrally formed locking spring and a terminal portion, and a notch is provided in the terminal portion so as to narrow the width direction, and the terminal portion is left in the width direction. 8. The electric wire connector according to claim 7, wherein the electric wire is sandwiched and held between the bent portion and the locking spring.

11. An unlocking button for applying a force in a direction substantially opposite to a direction of pinching the electric wire by the locking spring of the quick connection terminal to the locking spring to release the electric wire,

10. The electric wire connector according to claim 10, wherein the unlock button is arranged in a notch of the terminal portion.

12. The housing has an unlock button hole through which the unlock button is slidably slidable.

The electric wire according to claim 11, wherein the unlocking button has a restricting portion that abuts on the housing to prevent excessive pushing, and a retaining portion that is locked by the housing and prevents the unlocking button from being pulled out. Connector.