JP4891835B2 - connector - Google Patents

Description

  The present invention relates to a connector comprising a receptacle mounted on a printed wiring board and a plug connected to a plurality of electric wires that are removably fitted in the receptacle, and in particular, a variety of products with various numbers of electric wires to be connected. This corresponds to the manufacture of a small amount of connectors.

Conventionally, terminal blocks have been used to connect various circuit components and electric wires in control devices and the like. As such a terminal block, as disclosed in the following Patent Document 1, a terminal block constituted by an electric wire mounting portion for connecting electric wires and a board mounting portion having a slit for inserting an end portion of the printed wiring board. It has been known.
JP 2004-103263 A

  In such a conventional terminal block, since the number of poles is fixed, it is necessary to prepare various terminal blocks having different number of poles depending on the application. Moreover, the terminal block in which the contact pieces which contact the printed wiring board are arranged in a staggered pattern tends to become longer and larger.

  In addition, when orders are received for a small number of different types of connectors with different numbers of wires to be connected, various types of molds for molding synthetic resin must be made and manufactured, resulting in high costs and long delivery times. It has become.

  Therefore, the connector of the present invention has been conceived to solve such a problem, so that a connector having a desired number of poles having the same pitch can be obtained by simply processing a connector having various pole numbers. It is composed.

  In the connector of the present invention, a protruding portion at both ends and a protruding portion at the center are formed in a “mountain” shape, and a receptacle housing in which a hole is formed in a valley between the protruding portions and a hole in the valley portion are fitted. A receptacle composed of an inserted pin contact, two plate members facing each other in parallel, a thick partition plate perpendicular to the plate member between the two plate members, and an intermediate between the thick partition plates The partition plate having the above-mentioned thickness is adjacent to each other, with a portion having four spaces partitioned by the partition plate having a small thickness provided on the partition member and the partition plate having a thin thickness provided parallel to the plate member as one block. Plurally arranged in common, a pair of plug housings in which holes for inserting electric wire pins are formed above each space, a box-shaped connecting part having a bottom side, and a guide surface at the tip It consists of elastic clamping pieces, A socket contact for input, constituted by a more becomes plug and sealing blocks fitted below said plug housing for holding the box-shaped connecting portion of the socket contact.

  By cutting outside the two thick partition plates in the middle of the plug housing to reduce the number of blocks, connectors with various numbers of poles can be obtained.

  According to the connector constituted by the receptacle and the plug of the present invention, the number of electric wires to be connected is different by partially cutting the plug housing without making various molds for molding the synthetic resin. Various types of connectors can be manufactured in small quantities.

(First embodiment)
As shown in FIG. 11, the connector of the present invention includes a receptacle 1 mounted on a printed wiring board 9 and a plug 2 to which a plurality of electric wires 81 that are detachably coupled to the receptacle 1 are connected.

  The receptacle 1 to be mounted on the printed wiring board 9 includes a receptacle housing 11 in which a synthetic resin shown in FIG. 2 is molded, and a pin contact 17 shown in FIG.

  As shown in FIG. 2, the receptacle housing 11 has protrusions 12 and 13 at both ends and a central protrusion 14 formed in a “mountain” shape, and a valley between the protrusion 12 and the protrusion 14. Square holes 15 into which the pin contacts 17 are inserted are respectively drilled in the valley portions between the protrusions and the protrusions 14 and the protrusions 13.

  As shown in the side view of FIG. 2 (d), square holes 121 and 131 for engaging the hook portions 63 (see FIG. 8) of the lock member 6 are respectively provided in the lateral directions in the protruding portions 12 and 13 at both ends. As shown in the plan view of FIG. 2 (b), grooves 122 and 132 that are convex in the longitudinal direction are formed in the longitudinal direction inside the protrusions 12 and 13 at both ends, respectively. . When inserting the receptacle, the shapes of the convex grooves 122 and 132 are made different so that the insertion direction is not mistaken. Further, tapered portions 123 and 133 are formed between the top portions of the projecting portions 12 and 13 at both ends and the square holes 121 and 131, respectively.

  Reference numeral 18 shown on the bottom surface of the receptacle 1 is a spacer for forming a gap between the receptacle 1 and the printed wiring board when the receptacle 1 is mounted on the printed wiring board. A protrusion 181 is formed on one spacer 18 so that the direction is not mistaken when mounted on a printed wiring board.

  As shown in FIG. 3, the pin contact 17 is formed by punching a metal plate. The pin contact 17 is a contact part 171 fitted into a pair of elastic clamping pieces 42 (see FIG. 5) of the socket contact 4 and a printed wiring board. The connecting portion 172 is mounted and soldered, and a sawtooth-shaped retaining portion 173 formed in the middle.

  When the pin contact 17 is press-fitted into the rectangular hole 15 of the receptacle housing 11 from below, the retaining portion 173 is engaged with and fixed to the inner peripheral surface of the rectangular hole 15 as shown in the sectional view (e) of FIG. In other words, it does not come out of the square hole 15.

  The plug 2 to which the electric wire is connected includes a plug housing 3 shown in FIG. 4, a socket contact 4 in which a connecting portion 41 and a pair of elastic clamping pieces 42 shown in FIG. 5 are integrally molded, and a sealing block 5 shown in FIG. And a release knob 7 shown in FIG. 7 and a lock member 6 shown in FIG.

  As shown in a front view (a), a plan view (b), a bottom view (c), a side view (d), and a longitudinal sectional view (e) of FIG. The plate member 31, 31, a thick partition plate 32 orthogonal to the plate member 31, 31 between these two plate members 31, 31, and a thickness provided in the middle of the thick partition plate 32 is thin It has four spaces 34 partitioned by a partition plate 321 and a partition plate 311 having a small thickness parallel to the plate members 31 and 31 and provided in the middle.

  A plurality of portions having four spaces 34 surrounded by two plate members 31, two adjacent thick partition plates 32 and a thin partition plate 321 are arranged as one block. In the embodiment shown in FIG. 4, six blocks are arranged with the adjacent partition plates 32 having a large thickness in common, and 24 electric wires can be connected.

  When obtaining an array of 5 blocks, use an array of 6 blocks by cutting along the line AA outside the two thick partition plates 32 in the middle. Therefore, it is possible to make an arrangement of an arbitrary number of blocks without preparing many molds. For example, as shown in Fig. 9, if you prepare an array of 9 blocks, you can obtain an array of 7 or 8 blocks by cutting 1 place, and cut 2 places If it does, what arranged 3-6 blocks can be obtained.

  On each of the four spaces 34, a hole 35 for inserting a pin 8 (see FIG. 11) having a wire 81 connected to the tip in advance and a guide hole 36 for inserting a release knob 7 (see FIG. 7) are formed. A space 37 into which the sealing block 5 is fitted is formed under the thin partition plates 311 and 321. A square hole 326 that engages with a hook 56 (see FIG. 6) of the sealing block 5 is formed at a position sandwiching the sealing block 5 of the thick partition plate 32.

  On the two partition plates 32 having a large thickness, convex lines 39 projecting into a space 37 for identifying the direction in which the sealing block 5 is fitted are formed on one surface in the vertical direction. The convex 39 is engaged with the groove 541 (see FIG. 6) of the sealing block 5.

  As shown in the longitudinal sectional view of FIG. 4E, the hole 35 through which the pin 8 connected to the tip of the electric wire is inserted has a round hole 351 at the top in accordance with the shape of the pin 8 (see FIG. 11). The lower part is a rectangular hole 352. The guide hole 36 into which the release knob 7 is inserted is a hole having a wide entrance and a narrowed portion 361 formed in the middle. Further, the plug housing 3 is provided with a check hole 30 for inserting a test pin for checking the energization state.

  Further, on both outer sides of the two plate members 31, 31 of the plug housing 3, four ridges 322 into which the lock member 6 is fitted are formed, and the lock member 6 can be freely rotated on the ridges 322. A hole 323 is formed through which a pin 324 (see FIG. 10) is supported.

  The socket contact 4 is inserted into each space 34 of the plug housing 3 from below, and a metal plate having elasticity is punched out as shown in FIG. And bent outward along the solid ridgeline, as shown in FIGS. 5A to 5D, a box-shaped connecting portion 41 having a base 411 and a guide surface 43 formed at the tip. It is constituted by a pair of elastic clamping pieces 42.

  The connecting portion 41 of the socket contact 4 is formed with one cut and raised piece 44 for positioning the pressure contact spring 45, and a tapered surface 414 for facilitating insertion of the pin of the electric wire is formed on the upper end surface. . The cut and raised piece 44 is obtained by cutting three sides of a square and bending the remaining one side inward. Further, a projection 415 projecting inward is formed on one wall surface 412 of the box-shaped connecting portion 41.

  As shown in FIG. 5 (g), the press contact spring 45 fitted into the connection portion 41 of the socket contact 4 is formed by bending a long and thin metal plate having elasticity, and is bent into an L shape so that a bottom surface 453 and a vertical surface 452 are formed. The inclined surface 451 is formed by bending the upper surface 452 into an inverted U-shape and bending it obliquely outward.

  When this pressure contact spring 45 is fitted into the connection portion 41 of the socket contact 4, an L-shaped vertical surface 452 is held between the wall surface 413 of the connection portion 41 and the cut and raised piece 44 as shown in FIG. In addition, the tip of the inclined surface 451 is configured to be in contact with the bottom of the protrusion 415 formed on the wall surface 412 of the connecting portion 41 below the tapered surface 414 of the connecting portion 41.

  As shown in a front view (a), a plan view (b), a bottom view (c), a side view (d), and a longitudinal sectional view (e) of FIG. 11 is formed with protrusions 51 and 52 that fit into the two valleys (see FIG. 2), and a recess 53 in which the protrusion 14 at the center of the receptacle housing 11 fits, and a flat surface 54 is formed on the upper side, The protrusions 51 and 52 and the recess 53 are connected by a plate member 55 in the vertical direction. The thickness and position of the plate member 55 are the same as those of the partition plate 321 of the plug housing 3.

  As shown in the plan view (b) and the bottom view (c) of FIG. 6, on both sides of the protruding portions 51 and 52 of the sealing block 5, the square grooves 57 for accommodating the elastic clamping pieces 42 of the socket contacts 4 are longitudinal Is formed. On both end surfaces of the projecting portions 51 and 52, projecting strips 511 and 512 that engage with projecting groove strips 122 and 132 formed inside the projecting portions 12 and 13 of the receptacle housing 11 are formed. The shapes of both ridges 511 and 512 are different from each other so as not to mistake the direction of insertion into the receptacle 1.

  When this sealing block 5 is fitted into the plug housing 3, a groove 541 is formed on one surface of the central portion of the sealing block 5 so that the insertion direction is not mistaken. The plug housing 3 engages with the vertical protrusions 39 (see FIG. 4) formed on the two partition plates 32 having a large thickness.

  On the surface of the sealing block 5, a hook portion 56 having a tapered surface that engages with the square hole 326 of the two partition plates 32 in which the plug housing 3 is thick is formed.

  As shown in FIG. 7, the release knob 7 to be inserted into the guide hole 36 of the plug housing 3 has a head 71 having a cross-shaped groove 72 formed on the top surface, an intermediate plate-like portion 73, and a lower end. The hook portion 74 is integrally molded with synthetic resin, and the inclined surface 451 of the pressure contact spring 45 of the socket contact 4 is pushed down by pressing down the head 71 with the tip of the driver aligned with the groove 72. .

  As shown in the front view (a), the side view (b) and the rear view (c) of FIG. 8, the lock member 6 fitted between the four ridges 322 formed on both side surfaces of the plug housing 3 is shown. It is formed in a U shape, and is composed of a pressing operation part 61 sandwiched between fingers formed at the upper end, a hook part 63 formed at the lower ends of both legs, and a shaft hole 62 formed at the lower end side from the center. It is integrally molded with resin.

  A spring plate 64 is integrally formed on the back surface of the lock member 6, and as shown in FIG. 1 (e), the spring plate 64 always presses the plate member 31 of the plug housing 3 so that the hook portion is always formed. The posture of the lock member 6 is maintained so as to bias 63 to the inside.

  Next, a procedure for assembling the plug 2 will be described.

  The legs of the lock member 6 are fitted between the four ridges 322 formed on both side surfaces of the plug housing 3, respectively, so that the shaft hole 323 of the ridge 322 of the plug housing 3 and the shaft hole of the lock member 6 are inserted. A pin 324 shown in a front view (a) and a side view (b) of FIG. 10 is fitted into 62, and the lock member 6 is pivotally supported.

  The pin 324 is formed by rolling a metal plate having elasticity into a cylindrical shape and tends to expand by elasticity in the shaft hole 323 of the ridge 322 of the plug housing 3, so that the pin 324 cannot be pulled out from the shaft hole 323. Absent.

  As shown in FIG. 5 (f), the socket contacts 4 combined with the pressure springs 45 are inserted into the four spaces 34 of the plug housing 3 as shown in the sectional view of FIG. The block 5 is fitted into the space 37 of the plug housing 3 from below, and the hook 56 having a tapered surface formed on the surface of the sealing block 5 is engaged with the square hole 326 of the two thick partition plates 32. As a result, the plug housing 3 and the sealing block 5 are combined to seal the four spaces 34.

  Similarly, the insertion of the socket contact 4 and the insertion of the sealing block 5 in all four spaces 34 surrounded by the two plate members 31, 31 of the plug housing 3 and the two thick partition plates 32. I do.

  By this combination, the bottom surface 411 of the connection portion 41 of the socket contact 4 is held by the flat surface 54 of the sealing block 5, and is surrounded by the rectangular groove 57 of the sealing block 5 and the plate member 325 protruding downward of the plug housing 3. The elastic clamping piece 42 of the socket contact 4 is surrounded by the space to be stored.

  Then, the release knob 7 is press-fitted into each guide hole 36 of the plug housing 3. When the release knob 7 is press-fitted, when the hook portion 74 of the release knob 7 passes through the narrowed portion 361 of the guide hole 36, the hook portion 74 can be deformed to pass through the guide hole 36. When the hook portion 74 passes through the narrowed portion 361 of the square hole 37, the hook portion 74 is not caught by the narrowed portion 361 and does not come out.

  The assembly order of the plugs 2 is not limited to the order described above, and may be changed as appropriate according to the convenience of the assembly process.

  When connecting the electrode of the printed wiring board 9 and the electric wire 81 using the connector configured as described above, the receptacle 1 is mounted on the printed wiring board 9 as shown in the sectional view of FIG. At this time, since the protrusions 181 are formed on one spacer 18 among the spacers 18 provided at the four corners of the bottom surface of the receptacle 1, the printed wiring board 9 has 1 in addition to the hole through which the pin contact 17 is inserted. By making holes 91 through which the protrusions 181 are inserted in the two spacers 18, the mounting direction of the receptacle 1 is not mistaken.

  A pin 8 coupled to the tips of a large number of wires 81 to be connected is inserted into each hole 35 of the plug 2 and connected. At this time, in the socket contact 4, the pin 8 is pressed against the protrusion 415 formed on the wall surface 412 by the press contact spring 45 to make point contact (see FIG. 5).

  The plug 2 to which a large number of electric wires 81 are connected is fitted into the receptacle 1 mounted on the printed wiring board 9. By this fitting, the hook portion 63 of the lock member 6 of the plug 2 is engaged with the square holes 121 and 122 of the two receptacles 1, so that the plug 2 is not detached from the receptacle 1. When checking the energized state, it can be checked by inserting a test pin into the check hole 30 of the plug 2 and bringing it into contact with the pressure spring 45 of the socket contact 4.

  When the plug 2 is removed from the receptacle 1, the pressing operation portion of the locking member 6 is grasped by 61 with a finger, the hook portion 63 is opened, the engagement with the rectangular holes 121 and 122 of the receptacle 1 is released, and the plug 1 is lifted. It's good.

  When the pin 8 of the electric wire 81 is removed from the plug 2, if the tip of the driver is pushed down in accordance with the groove 72 of the head 71 of the release knob 7, the inclined surface 451 of the pressure contact spring 45 of the socket contact 4 is pushed down. Since a gap is formed between the tip of the pressure contact spring 45 and the protrusion 415 formed on the wall surface 412, the pin 8 can be easily pulled out. At this time, due to the presence of the protrusion 415, the press contact spring 45 does not jump up accidentally.

(Second Embodiment)
When connecting eight wires, as shown in the front view (a), the plan view (b), the bottom view (c), the side view (d) and the longitudinal sectional view (e) of FIG. An arrangement is used in which two plate members 31, 31, two adjacent blocks 32 having a large thickness, and two blocks having four spaces 34 surrounded by a thin partition plate 321 are arranged. The configuration of each block is the same as that of the first embodiment, but the lock member 60 and the protrusion 322 that supports the lock member 60 are different.

  The plug housing 3 has two ridges 322 into which the lock member 60 is fitted on both sides of the two plate members 31, 31, and the rotation shaft of the lock member 60 is fitted into the ridge 322. A hole 323 for insertion is formed.

  The lock member 60 fitted between the two ridges 322 includes a pressing operation portion 61 sandwiched between fingers formed at the upper end, a hook portion 63 formed at the lower end, and a shaft hole formed at the lower end side from the center. It is integrally molded with synthetic resin.

  When it is desired to obtain a connector that connects four electric wires by one block, the block that does not support the lock member 60 can be used as one block by cutting it with a line AA.

It is the front view (a) which shows 1st Embodiment of the plug in the connector of this invention, a top view (b), a bottom view (c), a side view (d), and a longitudinal cross-sectional view (e). It is the front view (a) which shows the receptacle in the connector of this invention, a top view (b), a bottom view (c), a side view (d), and sectional drawing (e) cut | disconnected by the surface containing a pin contact. It is the front view (a), side view (b), and top view (c) which show the pin contact inserted in a receptacle. It is the front view (a) which shows the plug housing in the connector of this invention, a top view (b), a bottom view (c), a side view (d), and a longitudinal cross-sectional view (e). Front view (a), rear view (b), side view (c), plan view (d), plan view (e) of a stamped metal plate, socket incorporating a pressure spring It is the front view (f) which shows a contact, and the front view (g) which shows a press-contact spring. It is the front view (a) which shows the sealing block integrated in a plug, a top view (b), a bottom view (c), a side view (d), and a longitudinal cross-sectional view (e). They are the front view (a) which shows the release knob integrated in a plug, a side view (b), and a top view (c). It is the front view (a), side view (b), and back view (c) which show the locking member integrated in a plug. They are a front view (a), a top view (b), a bottom view (c), a side view (d), and a longitudinal sectional view (e) showing a multi-pole plug housing. It is the front view (a) and side view (b) which show the pin which supports a lock member rotatably in a plug. It is a longitudinal cross-sectional view which shows the state which mounts the connector of this invention on a printed wiring board. It is a figure which shows 2nd Embodiment of the connector of this invention.

Explanation of symbols

1. Receptacle
11 Receptacle housing
12, 13 Protrusion
121, 131 square hole
122, 132 Convex groove
123, 133 Taper
14 Center protrusion
15 square hole
17 pin contact
171 Contact area
172 connection
173 Sawtooth-shaped retaining part 2 Plug 3 Plug housing
31 Plate member
311 Thin partition plate parallel to plate member
32 Thick divider perpendicular to the plate member
321 Thin partition plate orthogonal to plate member
323 pin insertion hole
326 square hole
34 space
36 Guide hole for inserting the release knob
361 Stenosis
37 Space 4 Socket contact
41 Connection
42 A pair of elastic clamping pieces
43 Guide surface
45 Pressure spring 5 Sealing block
51, 52 Protrusion
53 recess
54 Flat surface
55 Plate member
56 Hook
57 Square groove 6 Lock member
61 Press operation part
62 Rotating axis
63 Hook 7 Release Knob 8 Pin
81 Electric wire 9 Printed wiring board

Claims (3)

A receptacle housing in which a protruding portion at both ends and a protruding portion in the center are formed in a “mountain” shape, and a hole is formed in a valley between the protruding portions, and a pin contact inserted into the hole in the valley A receptacle,
Two plate members opposed in parallel, a thick partition plate perpendicular to the plate member between the two plate members, and a thin partition plate provided in the middle of the thick partition plate; Arranging a plurality of adjacent thick partition plates in common as a block with a portion having four spaces partitioned by a thin partition plate provided in the middle in parallel with the plate member, Above the space, a plug housing in which a hole for inserting the pin of the electric wire is formed,
A box-shaped connecting part having a bottom side and a pair of elastic clamping pieces with a guide surface formed at the tip, socket contacts inserted into the respective spaces,
A connector comprising: a plug comprising a sealing block that fits under the plug housing that holds the box-shaped connecting portion of the socket contact.   The connector according to claim 1, wherein the number of blocks is reduced by cutting outside two thick partition plates in the middle of the plug housing.   The connector according to claim 1, wherein the plug is provided with a locking member that engages with the receptacle.

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