JP2011028851A - Shield case and connector with connector housing shielded by the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shield case inhibiting a connector housing from being pulled off, and inhibiting its lower end from opening wider in a way separating from the connector housing. <P>SOLUTION: For the connector 30 consisting of a shield case 10 and a connector housing 20 shielded by the shield case 10, a notch is formed on the shield case 10 from nearly a center part toward a lower side in each of right and left side faces 12L, a long-size piece 18R made up by forming hooks at the tip and a slit at a center part in a length direction is set in extension so that the hooks is directed downward in the notch, and hook shield case lock parts 28R each in a bridge form for locking the long-size piece 18R are formed at right and left side faces 22L, 22R of the connector housing 20. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a shield case that covers a connector housing, and in particular, prevents the shield case covered outside the connector housing from coming out again, and the side plate of the shield case is expanded sideways. This is related to a shield case that is devised so as not to occur.

<Conventional connector>
10A and 10B are diagrams for explaining a conventional connector covered with a shield case. FIG. 10A shows a conventional shield case, FIG. 10B shows a connector housing, and FIG. 10C shows a connector with the shield case covered by the connector housing. Each perspective view is shown.
Hereinafter, the shield case 100 of (a) and the connector housing 200 of (b) will be described in detail.

<Shape of conventional shield case 100>
In FIG. 10A, the shield case 100 is a thin metal plate bent into a U-shaped cross section composed of an upper plate 110, a left side plate 120L, and a right side plate 120R when viewed from the front (lower left in the figure). The rear part of the same thin metal plate is bent to form a slightly smaller cross-sectional U-shape which is similarly composed of the upper plate 130, the back plate 140, the left side plate 150L, and the right side plate 150R.
The left side plate 120L and the right side plate 120R have a locking portion 160L and a locking portion 160R extending downward, respectively, and are inserted into locking holes formed in the mounting substrate to be locked and fixed.
Further, the right side plate 150R and the back plate 140 (FIG. 11) are extended with pins P1 to P3 (FIG. 11) facing downward when in use.
Retaining retaining pieces 120K1, 120K2, and 150K are bent on the right side plate 120R, the left side plate 120L, and the right side plate 150R, respectively, toward the upper side inside the U-shaped space.

<Development of shield case 100>
FIG. 11 is a perspective view showing a thin metal plate before being bent into the shield case of FIG. In the development view of FIG. 11, the dotted line portions indicated by the circles (1) to (6) of the numbers are valley-folded, and the dotted line portions indicated by the circle (b) are mountain-folded. The shield case 100 is completed. 11 that have already been described with reference to FIG. 10 will be omitted. T <b> 1 and T <b> 1 are ground pieces provided on the back plate 140 of the shield case 100.

<Shape of connector housing 200>
Next, returning to FIG. 10B, the connector housing 200 is fitted with the upper surface 210/230 and both side surfaces 220L / 250L (not visible in the drawing), 220R / 250R, the back surface 240, the bottom surface 260 and the mating connector. For this reason, a resin-molded product is formed as a whole having a rectangular parallelepiped shape provided with an internal space entering from the front side.
The connector housing 200 is formed with recesses 220K1, 250K, and 220K2 (not visible in the drawing) at the lower ends of the right side surfaces 220R and 250R and the left side surface 220L, respectively. When the shield case 100 is once covered with the connector housing 200, the retainer locking pieces 120K1, 150K, and 120K2 of the shield case 100 are respectively fitted into the recesses 220K1, 250K, and 220K2 of the connector housing 200. The shield case 100 is prevented from coming out upward from the connector housing 200.

<Problem of connector 300>
As described above, in the conventional connector 300, the retaining locking pieces 120K1, 150K, 120K2 of the shield case 100 are fitted into the recesses 220K1, 250K, 220K2 of the connector housing 200, respectively. It is designed not to come out. However, no special countermeasure has been taken for the “spreading direction” in which the shield case 100 expands left and right.
However, pin position accuracy must be maintained until mounting on the circuit board. Therefore, if the shield case 100 is expanded in the “spreading direction”, pin position accuracy cannot be maintained until mounting on the circuit board. Prevention of spread is important.
Therefore, in order to prevent the spread in the spreading direction, the shield case 100 must be left to hold the outer shape. Therefore, in order to hold the outer shape, as shown in the plan view of FIG. Although it is difficult to spread by using the full width L1 of the connector and using the full width (depth) L2 of the shield case 100 in the insertion direction, a metal sheet having a large area has to be used. Moreover, as will be described later, the production loss of the metal thin plate also increased. Moreover, the prevention of the spread was not so decisive.

<Shield case described in Patent Document 1 with prevention of spread>
Moreover, there existed the shield case of patent document 1 as invention which prevented the shield case from spreading in the "expansion direction". This is because the locking part protrudes rearward from the left and right side surfaces of the connector housing, and a groove having an open bottom surface into which the locking part can be fitted is provided on the rear end surfaces of the left and right side plates of the shield case. When covering the upper surface and the left and right side surfaces of the connector housing while bending backward and pushing down the shield case from the upper surface of the connector housing, expansion is prevented by fitting a locking portion into the groove. .

Japanese Utility Model Publication No. 6-26174

<Problem of shield case described in Patent Document 1>
However, although the shield case described in Patent Document 1 prevents the spread, it prevents the spread at the rear end surfaces of the left and right side plates of the shield case. This is insufficient to reliably prevent the front side of the shield case on the opposite side away from the spread.
Further, since the width (depth) of the shield case in the connector insertion direction is long, the consumption of the metal thin plate of the shield case is increased.

  The present invention has been made to solve these problems, and prevents the shield case covered by the connector housing from coming out “upward” from the connector housing and from expanding in the “expanding direction”. And it aims at providing the shield case which can reduce the area of the metal thin plate to be used, and can reduce manufacturing loss.

  In order to solve the above problems, a first invention of a shield case is a shield case comprising an upper plate and left and right side plates formed by bending an end portion of the upper plate. A long piece formed by forming a notch from the vicinity of the center toward the lower side, forming a hook at the tip, and forming a slit at the center in the lengthwise direction, the hook extends downward into the notch of the left and right side plates. It is characterized by extending so as to face.

  Further, the second invention of the connector housing is a connector housing comprising a top surface, left and right side surfaces, a back surface, a bottom surface, and a front surface connected to an internal space in which the mating connector is fitted, and is formed of a resin in a substantially rectangular parallelepiped shape as a whole. Shield case lock portions are respectively formed on the left and right side surfaces, the shield case lock portions have a bridge shape, and the height of the bridge is slightly larger than the thickness of the metal thin plate constituting the shield case. The width is slightly shorter than the distance from the base of the long piece with the hook to the base of the hook, and the length between the insides of the bridge girders of the bridge is larger than the width of the long piece with the hook, and the tips of the hooks It is characterized by being shorter than the interval.

  A third invention of the connector is a connector comprising a shield case and a connector housing covered with the shield case, wherein the shield case is the shield case of the first invention, and the connector housing is the one of the second invention. It is a connector housing.

  The connector according to a fourth aspect of the present invention is the connector according to claim 3, wherein the shield case includes a rear plate, left and right side plates extending at both ends of the rear plate, and the rear plate. Obtained when the rear center upper plate extended and the left and right side upper plates extended on the left and right side plates are bent and the rear center upper plate and the left and right side plates are bent respectively. It is characterized in that a gap is formed on the upper plate.

  According to the third invention, since the shield case of the first invention and the connector housing of the second invention are used, the shield case covered by the connector housing is prevented from coming out “upward” from the connector housing. A connector that does not expand in the “spreading direction” can be obtained.

  According to the fourth invention, since the gap is formed in the upper plate obtained when the rear center upper plate and the left and right side plates are bent, the area of the thin metal plate to be used can be reduced and developed. In the figure, a connector with less waste (manufacturing loss) can be obtained.

FIG. 1 is a diagram for explaining a connector covered with a shield case according to the present invention. (A) is a shield case according to the present invention, (b) is a connector housing, and (c) is a cover for the shield case. FIG. FIG. 2 is a perspective view showing a thin metal plate before being bent into the shield case of FIG. FIG. 3 is a perspective view of the thin metal plate in a state where the left side plate of the thin metal plate in FIG. 2 is bent inward by 90 degrees. 4 is a perspective view of the thin metal plate in a state in which the right side plate of the thin metal plate of FIG. 3 is bent inward by 90 degrees. FIG. 5 is a perspective view of the thin metal plate in a state where the upper portions of the left and right side plates of the thin metal plate of FIG. FIG. 6 further shows that the metal thin plate in FIG. 5 is bent 90 degrees inward until it becomes horizontal, and then bent inward 90 degrees until both ends of the back plate are directed downward, ie, the bent sheet is bent. It is a perspective view of the completed state. FIG. 7 is a side view of the connector of FIG. 1 (c) viewed from the right side. FIG. 8 is a plan view of the connector shown in FIG. FIG. 9 shows the size of the thin metal plate used for obtaining the shield case (FIG. 2) according to the present invention and the size of the thin metal plate used for obtaining the conventional shield case (FIG. 11). It is a top view which shows the shape of the shield case obtained from (a), the metal thin plate which concerns on this invention, (b) is the conventional metal thin plate. FIG. 10 is a perspective view showing a printed circuit board mounting structure described in Patent Document 1. FIG. FIG. 11 is a perspective view showing a thin metal plate before being bent into the shield case of FIG. FIG. 12 is a plan view of the connector of FIG. 10C as viewed from above.

  In the following, the shield case covered by the connector housing is prevented from coming off “upward” from the connector housing, and is prevented from expanding in the “expanding direction”, and the area of the thin metal plate to be used is small and the manufacturing loss is reduced. A shield case according to the present invention that can be reduced will be described with reference to the drawings.

<Shape of shield case 10 according to the present invention>
Referring to FIG. 1 (a) for explaining the shield case according to the present invention, the shield case 10 is viewed from the front (left diagonally downward in the figure), and the left upper plate 11L and the right upper plate 11R, the left side plate 12L and the right side plate 12R, Rear center upper plate 13, upper left side plate 13L and upper right side plate 13R, back plate 14, left and right side plates 12L and 12R have locking portions 16L and 16R extending downward, and a back plate that does not appear in FIG. 14 (FIG. 2) are provided with grounding pieces 14L and 14R and pin terminals 15L and 15R (FIG. 2), respectively.
Further, according to the present invention, hook-like hook portions 18L and 18R with the tip of the hook facing downward are provided in the plane of the left side plate 12L and the right side plate 12R, respectively. The hook-like hook portions 18L and 18R will be described later with reference to FIG.

<Development of shield case 10>
FIG. 2 is a perspective view of the unfolded state before bending the thin metal plate forming the shield case of FIG. In the development view of FIG. 2, the dotted cases indicated by the numbers (1) to (8) are valley-folded to complete the shield case 10 of FIG. 1 (a). Descriptions of the reference numerals shown in FIG. 2 that have already been described with reference to FIG. 1 are omitted. In FIG. 2, ground pieces 14L and 14R and pin terminals 15L and 15R are provided on the back plate 14, and locking pieces 15K are provided on the right side plate 12R. The ground pieces 14L and 14R and the locking piece 15K are bent so as to face upward from the root to the inside.
Further, the left side plate 12L and the right side plate 12R are formed with notches 12K and 12K from the lower portion toward the substantially central portion, and hook-like hook portions 18L and 18R are erected in the notches 12K and 12K according to the present invention. Has been.

<Shapes of hook-shaped hooks 18L and 18R>
The hook-shaped hooks 18L and 18R have a long piece extending downward from the notch 12K in the central portion of the left side plate 12L and 12R, a hook shape is formed at the tip, and the long piece A slit 18C is formed in the center of the slab, thereby comprising a long piece 18A having an outward hook, a long piece 18B having an inward hook, and a slit 18C. Since it looks like a bowl as a whole, it is named hook-like hooks 18L and 18R here.

<Shape of connector housing 20>
Next, the shape of the connector housing 20 will be described.
Returning to FIG. 1 (b), the connector housing 20 is provided with an inner space on the front side so that the upper surface 21, the side surfaces 22L and 22R, the rear surface 24, the bottom surface 26, and the mating connector are fitted to each other. The whole is made of a resin molded product having a rectangular parallelepiped shape.
The connector housing 20 has shield case lock portions 28L (not visible in the drawing) and 28R formed on the left side surface 22L and the right side surface 22R, respectively, according to the present invention.
Next, the shape of the shield case lock portions 28L and 28R will be described using an example of the shield case lock portion 28R.

<Shape of shield case lock 28R>
The shield case lock portion 28R is formed by a bridge-shaped member provided on the surface of the right side surface 22R.
(1) The height of the bridge from the surface of the right side surface 22R is slightly larger than the thickness of the thin metal plate constituting the shield case 10.
(2) The width of the bridge is slightly shorter than the base of the outward hook (or inward hook) from the base of the long piece 18A (or 18B) with hook of the shield case lock portion 28R,
(3) The length between the insides of the bridge girder of the bridge is larger than the distance between the outer sides of the long pieces 18A with the outward hook and the long piece 18B with the inward hook of the shield case lock portion 28R. The distance between the tips of the outward hook and the inward hook is shorter.
(4) When the shield case 10 is covered with the connector housing 20 from above the connector housing 20, the hook-shaped hook portion 18R can pass under the bridge. That is, the two bridge beams of the bridge are formed upstream and downstream in the connector fitting direction.

<Functions by hook-like hooks 18L and 18R and shield case lock part 28R>
The functions obtained by the hook-shaped hook portions 18L and 18R and the shield case lock portion 28R according to the present invention include the following two functions.
<< Function 1 >>
When the shield case 10 is covered from above the connector housing 20 toward the connector housing 20, a long piece 18A with an outward hook and a long piece with an inward hook constituting the hook-shaped hooking portion 18R of the shield case 10 Each hook 18B abuts against the bridge girder of the bridge-shaped shield case lock portion 28R and is displaced so that the hooks approach each other due to the elasticity of the material and the effect of the central slit 18C. The long hook 18A with the outward hook and the long hook 18B with the inward hook are restored to their original state by the restoring force when coming out to the side, and are engaged with the bridge beam. Thereafter, the shield case 10 is detached from the connector housing 20. You will never get out.
FIG. 1C shows a state in which the hook-shaped hook portion 18R is thus locked to the shield case lock portion 28R and the shield case 10 can no longer be removed from the connector housing 20.
<< Function 2 >>
Since the hook-shaped hook portion 18R of the shield case 10 passes under the bridge-shaped shield case lock portion 28R, the bridge-shaped hook portion 18R is blocked by the bridge even if it attempts to expand outward. become unable. FIG. 1 (c) also shows a state in which the hook-shaped hook portion 18 </ b> R is locked to the shield case lock portion 28 </ b> R and the lower end of the shield case 10 cannot be expanded in the direction away from the connector housing 20.

<Assembly of shield case 10>
2-6 is a perspective view explaining the assembly order of the shield case 10 of Fig.1 (a).
First, when the metal thin plate of the shield case 10 of FIG. 2 is valley-folded along the dotted line (1) in the drawing, the left side plate 12L is bent 90 degrees inward at the bent portion 12L1 as shown in FIG. It is done.
Next, when the metal thin plate of the shield case 10 of FIG. 2 is valley-folded along the dotted line (2) in the drawing, the right side plate 12R is bent 90 degrees inward at the bent portion 12R1 as shown in FIG. can get.
Further, when the metal thin plate of the shield case 10 in FIG. 2 is valley-folded along the dotted line of the circle (3) in the drawing, the left upper plate 11L of the left side plate 12L is 90 degrees inward at the bent portion 11L1 as shown in FIG. When bent and valley-folded along the dotted line (4) in FIG. 2, the right upper plate 11R of the right side plate 12R is bent 90 degrees inward at the bent portion 11R1.
And finally, when the metal thin plate of the shield case 10 of FIG. 2 is valley-folded along the dotted line of the circle (5), the dotted line of the circle (6), and the dotted line of the circle (7), respectively, as shown in FIG. The rear center upper plate 13 bends 90 degrees inside at the bent portion 131, the upper left side plate 13L bends 90 degrees inside at the bent portion 13L1, and the upper right side plate 13R bends 90 degrees inside at the bent portion 13R1, A three-dimensional shield case 10 shown in FIG.

FIG. 7 shows a shield-like hooking portion 18R and a shielding case locking portion 28R of a connector 30 formed by covering the shield case 10 according to the present invention thus assembled from above the connector housing 20 according to the present invention. FIG. The hook-shaped hook portion 18R passes under the shield case lock portion 28R and exits to the opposite side, and the hooks of the long piece 18A with the outward hook and the long piece 18B with the inward hook are connected to the shield case lock portion 28R. It can be seen that it is engaged with the bridge girder.
Therefore, according to the present invention, after that, the shield case 10 cannot be removed from the connector housing 20, and the lower end of the shield case 10 cannot be expanded in a direction away from the connector housing 20.

<Advantage 1 of the present invention>
As can be seen from the above description, according to the present invention, when the shield case 10 is covered from above the connector housing 20, the hook-like hooking portion 18 </ b> R of the shield case 10 is below the shield case lock portion 28 </ b> R of the connector housing 20. Since the hooks of the long piece 18A with the outward hook and the long piece 18B with the inward hook engage with the bridge girder of the shield case lock portion 28R, the shield case 10 is connected to the connector housing. The lower end of the shield case 10 cannot be expanded away from the connector housing 20.

<Advantage 2 of the present invention>
FIG. 8 is a plan view of the connector of FIG. In the figure, a white portion 10 is a shield case according to the present invention, and a dotted portion 20 is a connector housing according to the present invention. As a result of studying and examining the shielding performance of the upper plate portion of the shield case 10, the applicant has improved the EMC (electromagnetic compatibility) performance of the HOT itself, so that the shielding performance can be achieved even if a part of the upper plate portion is opened. Found no difference. Therefore, as shown in FIG. 8, according to the present invention, the entire upper portion of the connector housing 20 is not covered with the shield case, but only the left upper plate 11L, the right upper plate 11R, and the rear center upper plate 13 are configured. did.
As a result, it was possible to save the material of the metal thin plate by a portion 11H indicated by hatching compared to the conventional upper plate 110 (FIG. 10A) without degrading the performance as compared with the conventional shield case 100.
FIG. 9 shows the size of the thin metal plate used for obtaining the shield case 10 (FIG. 2) according to the present invention and the size of the thin metal plate used for obtaining the conventional shield case 100 (FIG. 11). It is a top view which shows the shape of the shield case punched out from a metal thin plate, (a) is the metal thin plate which concerns on this invention, (b) is the conventional metal thin plate.
As described above, the shield case 10 according to the present invention can save the material of the metal thin plate only in the hatched portion 11H (FIG. 8) than the conventional shield case 100. Therefore, as can be seen from FIG. The size of the thin metal plate used to obtain the shield case 10 according to the invention is an elongated shape (a), while the size of the conventional thin metal plate for the shield case 100 is a rectangular shape (b) close to a square. Therefore, when the areas of the two are compared, the metal thin plate for the shield case 10 according to the present invention is only 59% of the conventional area ratio.

<Advantage 3 of the present invention>
Moreover, as can be seen from FIG. 9, the shield case 10 according to the present invention, in which only the hatched portion is punched from the thin metal plate, is punched at 75.2% in terms of the area ratio with respect to the original thin metal plate. The ratio of the hatched portion where the case 100 is punched from the metal thin plate was 66.3%.
That is, the shield case 10 according to the present invention uses the metal sheet material more effectively than the conventional shield case 100.

<Effect of the present invention>
As described above, according to the present invention, (1) when the shield case 10 is covered with the connector housing 20, the shield case 10 does not come out of the connector housing 20, and (2) the lower end of the shield case 10 is the connector housing. It becomes impossible to expand in the direction away from 20, (3) the area punched out from the metal thin plate can be reduced, and (4) the punched metal thin plate can be used effectively.

10 Shield case 11L Left upper plate 11R Right upper plate 11L1, 11R1, 12L1, 12R1, 131, 13L1, 13R1 Bent part 12L Left side plate 12R Right side plate 13 Rear center upper plate 13L Left upper side plate 13R Upper right side plate 14 Back plate 14L, 14R Ground piece 15K Locking piece 15L, 15R Pin terminal 16L, 16R Locking part 18L, 18R Hook-shaped hook part 18A Long piece with outward hook 18B Long piece with inward hook 18C Slit 20 Connector housing 21 Upper surface 22L Left side 22R Right side 24 Back 26 Bottom 28L, 28R Shield case lock 30 Connector

Claims (4)

  In a shield case provided with an upper plate and left and right side plates formed by bending the end of the upper plate, a notch is formed from the approximate center of the left and right sides toward the lower side, and the tip is formed. A shield case characterized in that a long piece formed with a hook and having a slit at the center in the length direction is extended in the cutout of the left and right side plates so that the hook faces downward.   A connector housing having a top surface, left and right side surfaces, a back surface, a bottom surface, and a front surface connected to an internal space in which a mating connector is fitted, and is formed of a resin in a substantially rectangular parallelepiped shape. The shield case lock portion has a bridge shape, and the height of the bridge is slightly larger than the thickness of the thin metal plate constituting the shield case, and the width of the bridge is the root of the long piece with the hook. A distance slightly shorter than the distance from the base of the hook to the base of the hook, and the length between the insides of the bridge girders of the bridge is larger than the width of the long piece with the hook and shorter than the distance between the tips of the hooks. housing.   A connector comprising a shield case and a connector housing covered with the shield case, wherein the shield case is the shield case according to claim 1, and the connector housing is the connector housing according to claim 2. Connector.   The shield case includes a rear plate, left and right side plates extending from both ends of the back plate, a rear center upper plate extending on the back plate, and the left and right side plates in a developed view. And an upper plate obtained by bending the rear center upper plate and the left and right side plates, respectively, and a gap is formed. The connector according to claim 3.

Images