CN103036089B - Connector and lighting device - Google Patents

Abstract

The present invention does not a kind ofly increase connector and the lighting device that components number just can prevent the plastic deformation of contact.The maintaining part keeping the connecting portion of contact has been formed in the face side of shell.

Description

Connectors and Lighting Devices

technical field

The invention relates to a connector and a lighting device.

Background technique

Conventionally, as shown in FIGS. 18 to 25, it is known to include a housing 403, a pair of contacts 405 (however, only one contact 405 is shown in FIG. 18), a support member (not shown), an elastic rubber Tube 408 and connector 401 of cover 409 (see JP-A-2010-165627 (paragraphs 0025, 0036, 0040, 0041, 0044, 0045, 0051, FIGS. 1 to 6, 9, 10, etc.)) .

The connector 401 is a connector that electrically connects the printed circuit board 421 and the electric wire 422 . 18 to 23 , FIG. 24 , and FIG. 25 correspond to FIGS. 1 to 6 , FIG. 9 , and FIG. 10 of Patent Document 1 described below, respectively. However, the reference numerals in the drawings are changed and some of the reference numerals are deleted.

As shown in FIG. 24, the connector 405 has a first fixing part 451, a second fixing part 452, a pair of connecting parts 453 (however, only one connecting part 453 is shown in FIG. 24), a contact part 454, and Wiring part 455 . The contact portion 454 is in contact with the terminal portion 414 (see FIG. 20 ) of the printed circuit board 421 . The electric wire 422 is connected to the connection portion 455 . As shown in FIG. 24 , the first fixing portion 451 extends in the fitting and disengaging direction D11.

The contact portion 454 extends forward from the first fixing portion 451 and is folded back toward the rear end of the first fixing portion 451 .

The connection portion 455 is connected to the first fixing portion 451 and extends along the thickness direction of the first supporting portion 431 of the housing 403 . As shown in FIG. 24 , the connection portion 455 is bent in a direction perpendicular to the longitudinal direction of the first fixing portion 451 .

As shown in FIG. 25 , the cover 409 has a cover main body 491 , a pair of contact support parts 492 , a pair of rubber tube support parts 493 , and a pair of engaging pieces 494 .

The cover main body 491 is substantially plate-shaped. The pair of contact support portions 492 are substantially L-shaped and formed from near the upper end to the lower end of the inner surface of the cover main body 491 . The contact support portion 492 supports the connection portion 455 of the contact 405 . The pair of engaging pieces 494 each have a substantially plate shape and are connected to both side portions of the cover main body 491 . The engaging hole 441 is formed in the engaging piece 494 .

As shown in FIG. 20 , if the engaging hole 441 of the cover 409 is engaged with the engaging protrusion 472 of the housing 403 to fix the cover 409 on the housing 403, the connecting portion 455 of the contact 405 and the elastic rubber tube 408 are held together by the housing. 403 and cover 409 support.

Therefore, even if a force pulling the electric wire 422 is generated for some reason, the connection portion 455 is not plastically deformed.

As described above, in the conventional connector, since the connection part 455 of the contact 405 is supported by the cover 409, the number of parts of the connector increases.

Contents of the invention

The present invention was made in view of such circumstances, and an object of the present invention is to provide a connector and a lighting device capable of preventing plastic deformation of contacts without increasing the number of components.

In order to accomplish the above-mentioned problems, in a first aspect of the present invention, a connector is provided, which is equipped with contacts and a housing holding the contacts; a connection part for connection, and a connection part connecting the contact part and the connection part; the housing has a housing body for accommodating the contact part and a holding part formed on the outer surface of the housing body for holding the connection part; The link is bent.

Preferably, the housing main body is integrally formed with the holding portion.

Preferably, the connecting portion is bent approximately 180 degrees, and the holding portion is located on any one of the front side, the back side, or the side side of the housing main body.

Preferably, the connecting portion is bent approximately at 90 degrees, and the holding portion is located on the bottom side of the housing main body.

Preferably, the contact has an opposing portion facing the contact portion and receiving a pressing force from the contact portion when a part of the substrate is inserted into the housing main body.

Preferably, an insertion hole for inserting the facing portion is formed on the inner wall of the housing main body; when a part of the substrate is inserted into the housing main body, the substrate and a part of the inner wall are clamped by the contact portion and the facing portion. .

Preferably, the contact portion has a contact portion pressed against the substrate, and a guide portion connected to the contact portion and guiding a part of the substrate inserted into the housing main body to the contact portion; The contact has a protection portion that prevents a part of the substrate from contacting a front end portion of the guide portion when inserted into the housing body.

In order to solve the above-mentioned problems, in a second aspect of the present invention, there is provided a lighting device including the substrate on which LEDs are mounted, a chassis on which the substrate is mounted, and the connector mounted on the chassis.

It is preferable to include the above-mentioned substrate on which LEDs are mounted, a bottom plate on which the substrate is mounted, and the above-mentioned connector mounted on the bottom plate; the above-mentioned substrate and the above-mentioned connector are connected through holes formed on the above-mentioned bottom plate, A flange portion that closes the hole is formed on the top.

According to the present invention, it is possible to provide a connector and a lighting device capable of preventing plastic deformation of contacts without increasing the number of parts.

The above and other objects, features, and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Description of drawings

Fig. 1 is an exploded perspective view of a lighting device according to a first embodiment of the present invention.

Fig. 2 is a perspective view of the lighting device shown in Fig. 1 .

Fig. 3 is a perspective view of the lighting device shown in Fig. 1 viewed obliquely from below.

FIG. 4 is a perspective view of the bottom plate and the printed circuit board.

Fig. 5 is a perspective view of the connector.

FIG. 6 is a perspective view of the connector shown in FIG. 5 viewed obliquely from below.

FIG. 7 is a bottom view of the connector shown in FIG. 5 .

Fig. 8 is a perspective view of a contact.

FIG. 9 is a side view of the contact shown in FIG. 8 .

FIG. 10 is an exploded perspective view of the connector shown in FIG. 5 .

Fig. 11 is a perspective view of the peripheral portion of the connector of the lighting device shown in Fig. 1 viewed obliquely from below.

Fig. 12 is a side view of a peripheral portion of the connector shown in Fig. 11 .

Fig. 13 is a cross-sectional view of the peripheral portion of the connector shown in Fig. 11 .

Figure 14 is a front view of the connector prior to insertion of the printed circuit board into the connector.

Fig. 15 is a front view of the connector after the printed circuit board is inserted into the connector.

Fig. 16 is a sectional view of the connector after the printed circuit board is inserted into the connector.

Fig. 17 is a cross-sectional view of a connector of a lighting device according to a second embodiment of the present invention.

Fig. 18 is a perspective view showing a state in which a conventional connector is mounted on a printed circuit board and then cut away.

FIG. 19 is a top view of the connector and the printed circuit board shown in FIG. 18 .

Fig. 20 is a perspective view showing a state before the connector shown in Fig. 18 is mounted on a printed circuit board.

Fig. 21 is a front view of the connector shown in Fig. 18 .

FIG. 22 is a top view of the connector shown in FIG. 18 .

FIG. 23 is a perspective view of the housing of the connector shown in FIG. 18 .

FIG. 24 is a perspective view of a contact of the connector shown in FIG. 18 .

FIG. 25 is a perspective view of the cover of the connector shown in FIG. 18 .

Detailed ways

Embodiments of the present invention will be described below with reference to the drawings.

First, a first embodiment of the present invention will be described with reference to FIGS. 1 to 16 .

As shown in Figures 1, 2 and 3, the lighting device 20 includes a connector 1, 10 LEDs (light emitting diodes) 21, 2 printed circuit boards (substrates) 22, a bottom plate 23, a light guide plate 24, and a reflection sheet 25. , and power supply unit 26. The lighting device 20 is used, for example, as a backlight of a liquid crystal display device.

As shown in FIG. 14, each of the two printed circuit boards 22 has an insertion portion (part of the substrate) 22a. The insertion portion 22 a is located at one end of the printed circuit board 22 and protrudes in a direction perpendicular to the longitudinal direction of the printed circuit board 22 . The insertion portion 22 a is inserted into the connector 1 . A notch 22b is formed on one side of the insertion portion 22a, and an engaging portion 22c is formed on the other side of the insertion portion 22a. In addition, two pads 22d are formed on the insertion portion 22a. Five LEDs 21 are mounted on each printed circuit board 22 at equal intervals.

As shown in FIG. 4, the bottom plate 23 has a bottom plate main body 23a and a pair of bending pieces 23b, 23c. The bottom plate main body 23a has a flat plate shape. The bending piece 23b is connected to one side of the bottom plate main body 23a. The bending piece 23c is connected to the other side of the bottom plate main body 23a. The bending piece 23b faces the bending piece 23c. A hole 23d is formed in a connection portion between the bottom plate main body 23a and the bending piece 23b. The insertion portion 22a of the printed circuit board 22 is inserted into the hole 23d.

As shown in FIGS. 1 and 2 , the light guide plate 24 is disposed on the base plate body 23 a of the base plate 23 , and guides the light emitted from the LED 21 toward the bending piece 23 c. The reflection sheet 25 is disposed between the chassis main body 23 a and the light guide plate 24 . The reflective sheet 25 reflects light from the light guide plate 24 .

As shown in FIG. 3 , the power supply unit 26 is composed of a printed circuit board 26 a and a plurality of electronic components 26 b mounted on the printed circuit board 26 a, and supplies electric power to the LED 21 . The power supply unit 26 is attached to the back surface of the chassis main body 23a (the surface of the chassis main body 23a opposite to the surface on which the light guide plate 24 is disposed).

As shown in FIGS. 5 , 6 , and 7 , the connector 1 includes contacts 3 and a housing 5 .

As shown in FIGS. 8 and 9 , the contact 3 has a contact body 31 , a connection portion 37 , and a connection portion 38 . The contact 3 is formed by punching and bending a metal plate. The contact body 31 has a pair of contact portions 32 , a protection portion 33 , a pair of facing portions 34 , a pair of body connecting portions 35 , and a pair of pushing portions 36 .

Each contact portion 32 extends in the contact insertion direction D1. The contact part 32 has a contact part 32a, a guide part 32b, and a spring part 32c. The contact portion 32 a is in contact with the pad 22 d of the printed circuit board 22 . The guide portion 32b is connected to the front portion (the portion on the front side in the contact insertion direction D1) of the contact portion 32a, and is inclined with respect to the contact insertion direction D1. The spring portion 32c is connected to the rear portion (the portion on the rear side in the contact insertion direction D1 ) of the contact portion 32a. The spring portion 32c presses the contact portion 32a toward the pad 22d of the printed circuit board 22 .

The protection portion 33 extends toward the contact insertion direction D1. The protective portion 33 has a substantially U-shaped cross section. The front end portion (end portion on the front side in the contact insertion direction D1 ) of the protection portion 33 is connected to a pair of protection plates 33 a. The protection plate 33a is located in front of the guide portion 32b of the contact portion 32 in the contact insertion direction D1. A hole 33b is formed in the protective portion 33 (see FIGS. 10 and 13 ).

Each facing portion 34 extends in the contact insertion direction D1. The cross-sectional shape of each facing portion 34 is substantially L-shaped. When the insertion portion 22 a of the printed circuit board 22 is inserted between the contact portion 32 and the facing portion 34 , the facing portion 34 supports the insertion portion 22 a of the printed circuit board 22 pressed against the contact portion 32 .

Each main body connection part 35 connects the contact part 32 , the protection part 33 , and the facing part 34 .

Each push portion 36 is substantially plate-shaped, and is connected to the rear end portion (end portion on the rear side in the contact insertion direction D1 ) of the main body connection portion 35 (see FIG. 7 ).

The connection part 37 has a conductive connection part 37a and a skin connection part 37b. The wire connection part 37a is connected to the wire 7a of the cable 7 by crimping (refer FIG. 7, FIG. 13). The sheath connection portion 37b is connected to the sheath 7b of the cable 7 by crimping (see FIGS. 7 and 13 ).

The connecting portion 38 connects the contact body 31 and the connecting portion 37 . The connecting portion 38 is bent approximately 180 degrees into a U-shape.

As shown in FIGS. 5 , 6 , and 7 , the housing 5 is formed of synthetic resin, and has a housing main body 51 , four holding portions 52 , a flange portion 53 , and two locking portions 54 . The case main body 51 , the holding portion 52 , the flange portion 53 , and the locking portion 54 are integrally formed.

A fitting portion 51 a is formed on a front end portion (end portion on the front side in the contact insertion direction D1 ) of the housing main body 51 . The fitting part 51a is inserted into the hole 23d of the bottom plate 23 (refer FIG. 13). Four accommodating portions 51b are formed on the rear portion of the housing main body 51 (the portion on the rear side in the contact insertion direction D1) (see FIG. 6 ). The accommodating portion 51 b accommodates the rear portion of the contact body 31 (the portion on the rear side in the contact insertion direction D1 ) (see FIG. 13 ). Two receiving portions 51c are formed on the front portion of the housing main body 51 (the portion on the front side in the contact insertion direction D1) (see FIG. 5 ). Each receiving portion 51c communicates with two housing portions 51b. The receiving portion 51 c receives the front portion of the contact main body 31 and the insertion portion 22 a of the printed circuit board 22 . A guide portion 51d is formed between the two receiving portions 51c of the case main body 51 (see FIG. 16 ). A lance portion 51e is formed on an inner wall portion of the receiving portion 51c of the case main body 51 (see FIG. 13 ). The lance 51e extends toward the contact insertion direction D1. In addition, an insertion hole 51g is formed in an inner wall portion of the receiving portion 51c of the case main body 51 (refer to FIG. 13 ). The insertion hole 51g extends in the contact insertion direction D1. A groove 51f is formed on a side surface of the case main body 51 (see FIG. 16 ). The groove 51f extends in the contact insertion direction D1.

Each holding portion 52 is integrally formed on the front side of the case main body 51 . The holding portion 52 holds the connecting portion 37 of the contact 3 . The holding portion 52 has a pair of protrusions 52a. The distance between the pair of protrusions 52a is larger than the outer diameter of the cable 7 and smaller than the width of the sheath connecting portion 37b (see FIG. 7 ).

The flange portion 53 is integrally formed on the outer peripheral surface of the case main body 51 .

Each locking portion 54 is integrally formed on a side surface of the case main body 51 . The lock part 54 is substantially plate-shaped, and has the operation part 54a, the claw part 54b, and the hinge 54c (refer FIG. 14). The locking portion 54 faces a side surface of the case main body 51 . The operation portion 54 a is located on the rear side of the lock portion 54 . The claw part 54b is located in the front part side of the lock part 54, and has the lock claw 54d which protrudes toward the side surface of the case main body 51 (refer FIG. 14). The hinge 54c is substantially plate-shaped, elastically deformable, and supports the operation portion 54a and the claw portion 54b on the housing main body 51 so as to be seesaw-movable.

When the contact 3 is installed on the housing 5, the wire connection part 37a is crimped on the wire 7a of the cable 7 in advance, and the sheath connection part 37b is crimped on the sheath 7b of the cable 7, and the cable 7 is connected to the 10, the contact body 31 of the contact 3 is inserted into the receiving portion 51b of the housing 5 along the contact insertion direction D1. At this time, the facing portion 34 of the contact 3 is inserted into the insertion hole 51g of the case 5, and the pushing portion 36 of the contact 3 is pressed with a finger or a jig (not shown) (see FIG. 13 ).

The contact 3 mounted on the housing 5 is locked to the housing 5 by fitting the front end of the lance 51 e of the housing 5 into the hole 33 b of the contact 3 (see FIG. 13 ).

When the contact 3 is mounted on the housing 5 , the connecting portion 37 of the contact 3 is accommodated and held in the holding portion 52 from the contact insertion direction D1 . As a result, even if the cable 7 is pulled, the connection part 37 hardly moves and the connection part 38 does not deform.

As shown in FIGS. 11 and 12 , the connector 1 is arranged on the back side of the chassis main body 23 a of the chassis 23 . At this time, the fitting portion 51a of the housing 5 of the connector 1 is inserted into the hole 23d of the base plate 23 (see FIG. 13 ), and the flange portion 53 of the housing 5 closes the hole 23d of the base plate 23 .

When connecting the printed circuit board 22 mounted with the LED 21 to the connector 1, as shown in FIG. That's it. At this time, the cutout 22b of the printed circuit board 22 is fitted into the guide portion 51d of the case 5, and the printed circuit board 22 is guided toward the receiving portion 51c in the board insertion direction D2. In addition, the engaging portion 22c of the printed circuit board 22 is inserted into the groove 51f (see FIG. 16 ) of the case 5, and moves in the groove 51f. Part of the engaging portion 22c protrudes from the groove 51f to the outside of the case main body 51 . When the engaging portion 22c moves along the substrate insertion direction D2 in the groove 51f, the engaging portion 22c pushes back the locking claw 54d of the claw portion 54b of the locking portion 54 and advances, such as the engaging portion 22c passes through the locking claw of the claw portion 54b 54d, the claw 54b returns to its original position by the restoring force of the hinge 54c. As a result, the locking claw 54d of the claw portion 54b is hooked to the engaging portion 22c, and the printed circuit board 22 is locked to the connector 1 (see FIGS. 15 and 16 ).

When the insertion portion 22a of the printed circuit board 22 is inserted into the receiving portion 51c of the connector 1, the front end of the insertion portion 22a does not touch the contact portion 32 of the contact 3 by the protection plate 33a of the protection portion 33 of the contact 3. The front end portion of the guide portion 32b. When the front end portion of the insertion portion 22a passes through the protective plate 33a, the guide portion 32b of the contact portion 32 guides the insertion portion 22a toward the contact portion 32a.

When separating the printed circuit board 22 from the connector 1, push the rear part of the operation part 54a with a finger (not shown) to release the engagement between the engaging part 22c and the claw part 54b, and remove it from the receiving part 51c of the connector 1. The insertion portion 22a of the printed circuit board 22 may be pulled out.

According to this embodiment, the connecting portion 37 of the contact 3 is held by the holding portion 52 formed on the housing 5, so even if the cable 7 is pulled for some reason, the connecting portion 37 does not move, and the connection portion 38 can be prevented from being moved. out of shape. Therefore, a cover for preventing deformation of the connection portion 38 is not required, and the number of components of the connector 1 can be reduced, thereby enabling cost reduction.

Since the contact 3 has the facing portion 34, the facing portion 34 can block the elastic force (pressing force) of the spring portion 32c of the contact portion 32 through the printed circuit board 22, and the contact stability of the contact portion 32 with respect to the printed circuit board 22 can be improved. . Furthermore, since part 51h of the inner wall portion of case 5 forming insertion hole 51g is located between printed circuit board 22 and facing portion 34, damage to printed circuit board 22 can be prevented when inserting and removing printed circuit board 22.

In addition, since the contact 3 has the protective portion 33, when the insertion portion 22a of the printed circuit board 22 is inserted into the receiving portion 51c of the connector 1, the insertion portion 22a of the printed circuit board 22 does not touch the guide portion of the contact portion 32. The front end portion of 32b can prevent the contact portion 32 from being pushed and deformed (for example, buckled).

Furthermore, since the flange portion 53 is provided on the housing 5 of the connector 1, the hole 23d of the bottom plate 23 can be closed by the flange portion 53, and dust can be prevented from entering the LED 21 side from the power supply unit 26 side. In addition, since a dedicated part for closing the hole 23d is unnecessary, cost can be reduced.

In addition, since the insertion portion 22a of the printed circuit board 22 is connected to the connector 1 through the hole 23d of the bottom plate 23, the contacts 3 can be mounted on the housing 5 from the back side of the bottom plate main body 23a of the bottom plate 23. On the side of the power supply unit 26 of the base plate 23, the wiring work of the cable 7 is performed, and the wiring work is simplified.

Next, a lighting device according to a second embodiment of the present invention will be described with reference to FIG. 17 . The same reference numerals are assigned to the same parts as those in the first embodiment, and description thereof will be omitted. Hereinafter, only the parts different from those of the first embodiment will be described.

As shown in FIG. 17 , in the illuminating device 220 according to the second embodiment, the connecting portion 238 of the contact 203 of the connector 201 is bent approximately 90 degrees into an L-shape. The holding portion 252 of the housing 205 is formed on the bottom side of the housing main body 251 and extends in a direction perpendicular to the contact insertion direction D1.

According to the second embodiment, the same effects as those of the first embodiment are obtained.

In addition, in the first embodiment, the holding portion 52 is formed on the front side of the case main body 51 which is a plane parallel to the contact insertion direction D1, and the connection portion 38 of the contact 3 is bent 180 degrees into a U-shape. In the second embodiment, the holding portion 252 is formed on the bottom surface side of the case main body 51 which is a surface perpendicular to the contact insertion direction D1, and the connection portion 238 of the contact 203 is bent 90 degrees into an L shape, and the connection portion The bending angle is not limited to 180 degrees and 90 degrees. By forming the holding portion on the outer surface (not shown) of the housing body so that the holding portion is inclined with respect to the contact insertion direction D1, the bending angle of the connecting portion can be set to any value within the range of 90° to 180°. Angle.

In addition, in the above-mentioned embodiment, the holding portion 52 is formed on the front side of the casing body 51, and the holding portion 252 is formed on the bottom surface side of the casing body 251, but the position of the holding portion is not limited to these, and the position of the holding portion is the outer surface of the casing body, that is, the front surface. , the back, the side, and the bottom are all right, not limited to the front and the bottom.

In addition, in the above-described embodiment, the case main body 51 and the holding parts 52 and 252 are integrally formed, but the case main body 51 and 251 and the holding parts 52 and 252 may be separately formed and integrally combined.

In addition, in the above embodiment, the connectors 1, 201 and the printed circuit board 22 are connected through the holes 23d of the bottom plate 23, but the connectors 1, 201 and the printed circuit board 22 are not necessarily connected through the holes 23d. When the connector 1, 201 and the printed circuit board 22 are not connected through the hole 23d, the flange part 53 may not be provided in the case main body 51, 251 of the case 5, 205 of the connector 1.

In addition, in the above-mentioned embodiment, the contact portion 32 of the contact 3, 203 is connected to the connection portion 38, 238 via the main body connection portion 35, but in the contact without the structure of the protection portion 33, the opposing portion 34, and the push portion 36, In the case of a head (not shown), the contact portion 32 may be directly connected to the connection portions 38 and 238 .

In addition, in the said embodiment, although the two printed circuit boards 22 were used, you may use one printed circuit board which can mount ten LED21.

The above are preferred embodiments of the present invention, and it is clear for those skilled in the art that various changes can be made without departing from the spirit and scope of the present invention.

Claims (4)

1. A connector equipped with contacts and a housing holding said contacts, characterized in that: The contact has a contact portion contacting the substrate, a connection portion connected to the cable, and a connection portion connecting the contact portion and the connection portion; The housing has a housing body accommodating the contact portion and a holding portion formed on the outer surface of the housing body to hold the connecting portion; The connecting portion is bent, The housing main body is integrally formed with the holding portion, The connecting portion is bent approximately 180 degrees; The holding part is located on any one of the front side, the back side, or the side side of the housing body, The contact has an opposing portion facing the contact portion and receiving a pressing force from the contact portion when a part of the substrate is inserted into the housing body, an insertion hole for inserting the facing portion is formed on an inner wall portion of the housing main body; When a part of the substrate is inserted into the case main body, the substrate and a part of the inner wall are sandwiched by the contact portion and the facing portion, The contact portion extends toward the contact insertion direction, The connection part has a skin connection part, the insertion hole extends toward the contact insertion direction, The holding portion has a pair of protrusions, The distance between the pair of protrusions is larger than the outer diameter of the cable and smaller than the width of the sheath connecting portion. 2. The connector according to claim 1, characterized in that: The contact portion has a contact portion pressed against the substrate, and a guide connected to the contact portion for guiding a part of the substrate inserted into the case main body to the contact portion. department; The contact has a protection portion that prevents the portion of the substrate from contacting the front end portion of the guide portion when the portion of the substrate is inserted into the housing body. 3. A lighting device, characterized in that: A connector according to claim 1 or 2, the substrate on which LEDs are mounted, and a base plate on which the substrate and the connector are mounted. 4. A lighting device, characterized in that: A connector as claimed in claim 1 or 2, the substrate on which LEDs are mounted, and a bottom plate on which the substrate and the connector are mounted; The board and the connector are connected through a hole formed in the bottom plate, and a flange portion that closes the hole is formed on the housing main body.