JP6319976B2 - connector - Google Patents

Description

  The present invention relates to an interface connecting connector provided with a grounding metal fitting.

  An interface connection connector having a shell structure is mainly used for connection between a computer and peripheral devices. If the connector is connected with the switch switched on, static current or overcurrent may flow between the terminals, possibly damaging the computer or peripheral devices. In order to protect the safety of a computer, for example, there is known a means for providing a grounding metal as described in Patent Document 1 and grounding by a contact action of a shell before a terminal is connected.

  According to the means described in Patent Literature 1, a shell is provided on the front surface of the insulator, and a ground metal fitting is provided on the side surface. The fixing of the grounding metal is to lock a circular clip arm having a notch to a cylindrical mounting element mounted in a hole that penetrates the end of the insulator.

JP 2008-98165 A

  However, according to the means described in Patent Document 1, the ground metal fitting is provided in a form that is exposed substantially on the side surface of the insulator, and is fixed only by a clip arm having a notch. As a result, the grounding metal is easily hooked in an inadvertent state, and in some cases, it may be deformed or pulled out. In addition, the shape of the grounding hardware is generally complicated, requiring punching as well as bending, which increases the number of processing steps and leads to an increase in cost. Furthermore, assembly from the side is required, and assembly is expected to be difficult.

  The present invention has been made in view of the above-described problems, and has at least one of the following. One is to provide a connector with a structure that makes it difficult to remove the grounding bracket. One is to provide a connector in which the grounding metal is not exposed on the side and top surfaces. One is to provide connectors with easy-to-process grounding hardware. One is to provide a connector provided with a grounding metal fitting having an easily assembled structure.

The connector of the present invention is (1) a connector comprising an insulator in which a terminal hole in which a terminal is arranged is formed, and a shell made of a conductor attached to a fitting surface of the insulator, the shell when assembled to the circuit board is connected to the connection piece to the plate surface of the plate-shaped ground brackets having a uniform thickness for continuity with the ground of the circuit board, the grounding bracket, perforations of the circuit board The part connected to the part is divided into two locking pieces, which are attached from the fitting surface side to the perforation along the fitting direction of the insulator, and at least the end portion of the cut surface on the straight line at the rear end is It is characterized in that it is provided in a state of being closed on the back surface of the shell.

According to this invention, the earth metal fitting is fitted into the perforated portion of the insulator, and in this state, the rear end is closed by the back surface of the shell. Thereby, since there is no place which a ground metal fitting is exposed to a side surface and an upper surface, the connector provided with the ground metal fitting is obtained, without catching carelessly.
Further, since the rear end of the grounding metal is closed by the back surface of the shell, a connector having a grounding metal that is difficult to be removed can be obtained. Furthermore, since the ground metal fitting is assembled from the top surface of the insulator, a connector having an earth metal fitting that can be easily assembled is obtained.

Preferably, in the connector according to the present invention, (2) the shell includes an engaging portion for holding a fixed state at a normal mounting position with respect to the insulator, and the insulator corresponds to the engaging portion. (1) , which is characterized in that it includes a portion to be engaged.

  According to this invention, the shell is fixed to the insulator by the engagement mechanism. As a result, since the shell for preventing the earth metal fitting from coming off is fixed to the insulator, it is difficult to remove the earth metal fitting and an easily assembled connector can be obtained.

Preferably, the connector of the present invention is as follows: (3) The shell is assembled to the longitudinal end edge so as to be axially rotatable, and is held at a position for holding or releasing the fitting state with the mating connector. It is a thing of the description of (2) which has the characteristic in the place provided with the latch which can be united

  According to this invention, the connector which has the said objective and can fix easily a fitting state with the other party connector is obtained.

FIG. 1 is an external perspective view of a D-sub according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the D-sub. FIG. 3 is an external perspective view of the D-sub insulator. FIG. 4 is an external perspective view of the shell of the D-sub. FIG. 5 is an external perspective view of the grounding metal fitting of the same D-sub. 6A and 6B are four views of the D-sub ground metal fitting, wherein FIG. 6A is a front view, FIG. 6B is a side view, FIG. 6C is a top view, and FIG. It is. FIG. 7 is an external perspective view of the D-sub latch. 8A and 8B are process diagrams showing the assembly of the ground metal fitting of the D-sub, wherein FIG. 8A is a process of assembling a terminal to the insulator, FIG. 8B is a process of assembling the ground metal fitting to the insulator, and FIG. This is a process for completing the assembly of the ground metal fitting. FIG. 9 is a cross-sectional view taken along the line IX-IX in FIG. 8B, and is a process diagram illustrating the earth metal fitting assembly process in more detail. (A) is a process for starting the assembly of the grounding metal to the insulator, (B) is a process for assembling the grounding metal to the insulator, and (C) is a process for completing the assembly of the grounding metal to the insulator. FIG. 10 is a process diagram showing the assembly of the D-sub latch according to the embodiment of the present invention, wherein (A) is a process of assembling the latch to the shell, and (B) is a process of completing the assembly of the latch. . FIGS. 11A and 11B are process diagrams showing the assembly of the D-sub insulator and shell. FIG. 11A is a process of starting the assembly of the shell to the insulator, and FIG. 11B is a process of completing the assembly of the shell to the insulator. FIG. 12 is a view showing a state where the shell is put on the insulator after the assembly of the ground metal fitting shown in FIG. 9 is completed. 13 is a cross-sectional perspective view taken along the line XIII-XIII showing the connection structure between the grounding metal fitting and the shell shown in FIG.

<Overview of D-sub> D-sub (D-subminiature, hereinafter referred to as D-sub), which is an embodiment of an interface connection connector, will be described with reference to the drawings. FIG. 1 is an external perspective view of a D-sub according to an embodiment of the present invention. FIG. 2 is an exploded view of the D-sub. FIG. 3 is an external perspective view of the D-sub insulator. FIG. 4 is an external perspective view of the shell of the D-sub. FIG. 5 is an external perspective view of the grounding metal fitting of the same D-sub. 6A and 6B are four views of the D-sub ground metal fitting, wherein FIG. 6A is a front view, FIG. 6B is a side view, FIG. 6C is a top view, and FIG. It is. FIG. 7 is an external perspective view of the D-sub latch.

  As shown in FIG. 1, D-sub 1 has a shape in which terminals arranged in two stages are surrounded by a D-shaped shell 10 in front view. Mainly used to connect computers and peripheral devices.

  D-sub 1 is divided into a shell 10 and an insulator 20 as shown in FIG. The shell 10 is provided with a latch 40 for holding the fitting state with the mating connector at the end in the longitudinal direction. The insulator 20 includes a terminal 50 and a ground metal fitting 30. The shell 10 is a molded product of a rolled metal material having rigidity and conductivity. A metal shell 10 is used to prevent noise from appearing on the signal. A copper alloy, SUS, an iron-based metal alloy, or the like may be used as the metal material. The shell 10 surrounds the periphery of the conductor terminal 50 with the insulating insulator 20 interposed therebetween. The shell 10 is electrically connected to the ground 62 of the circuit board 60 through the ground metal fitting 30. The insulator 20 is a molded product made of an insulating synthetic resin, and has a terminal hole 271 for holding the terminal 50 in two stages. The insulator 20 includes a rectangular base portion 210 and a fitting portion 270 having a D-shape in front view formed on the upper surface 211 thereof, and a terminal hole 271 is provided in communication therewith.

  <Insulator> The insulator will be described with reference to the drawings. As shown in FIG. 3, the insulator 20 is a molded product made of an insulating synthetic resin and has a terminal hole 271 for holding the terminal 50 in two stages. The insulator 20 includes a rectangular base portion 210 and a fitting portion 270 having a D-shape in front view formed on the upper surface 211 thereof, and a terminal hole 271 is provided in communication therewith.

  As shown in FIG. 3, the base 210 has a terminal hole 271 and a grounding metal hole 231 formed therein so that the tip of the terminal 50 and the tip of the grounding metal 30 face the bottom surface 212. Locking grooves 220 and locking protrusions 221 for fixing the assembled shell 10 are provided on the front surface 213 of the base 210 and both ends of the rear surface (not shown). The front surface 213 and the rear surface (not shown) are generally flat and extend downward, and the lower end of the front surface 213 and the circuit board 50 are substantially not exposed so that a part of the terminal 50 is not exposed when the D-sub 1 is assembled to the circuit board 60. Has reached.

As shown in FIG. 3, the locking grooves 220 are formed at a total of four locations on both the left and right ends of the front surface 213 and the left and right ends of the rear surface (not shown). The locking groove 220 is a groove that is formed in a T shape in a front view and extends in the vertical direction. Both the upper end and the lower end reach the upper surface 211 and a bottom surface (not shown). The locking projection 221 is a rectangular protrusion in front view provided near the upper end of the locking groove 220. The locking convex portion 221 has a rectangular base portion and narrows toward the tip portion, and has a taper on the upper surface side. As a result, the tip of the locking piece 120 of the shell hits this taper and can smoothly get over the locking projection 221.

  As shown in FIG. 3, the side surfaces 215 and 216 are substantially flat on both the left and right sides, and extend substantially to the surface of the circuit board 60 so that a part of the terminal 50 is not exposed when assembled to the circuit board 60. The upper surface 211 is provided with insertion openings 230 and 230 for inserting the grounding metal fittings 30 at both left and right ends of a D-shaped fitting part 270 formed in the center when viewed from the front. The insertion port 230 is an opening extending in the width direction of the base 210 and the back (downward) communicates with the grounding metal hole 231. The grounding metal 30 is inserted from the insertion port 230 and fits in the grounding metal hole 231. Convex-shaped restricting portions 240 and 240 are provided on the left and right edge portions of the upper surface 211. The restricting portion 240 is a protrusion for restricting inadvertent dropping of the latch 40 when the D-sub 1 is assembled.

<Shell> The shell will be described with reference to the drawings. As shown in FIG. 4, the shell 10 is a molded product of a conductive metal material, and includes a rectangular base 110 and a hood 150 formed at the center thereof. The hood 150 and the base 110 are integrally formed. The D-shaped hood 150 in front view is formed by drawing, and the rectangular base 110 is formed by punching. The bearing portions 130 and 130 at the left and right end portions are formed by bending.

  As shown in FIG. 4, the hood 150 covers the fitting portion 270 of the insulator 20 when the shell 10 is assembled to the insulator 20. At this time, the inner peripheral surface of the hood 150 is in contact with the peripheral surface of the fitting portion 270. The base 110 includes two sets of bearing portions 130 and 130 at both left and right ends, and a total of four locking pieces 120 at both end portions of the front and rear surfaces. The bearing part 130 is formed by bending a tongue-like cut-out portion, and two pieces constitute a set. The locking piece 120 is formed by bending a tongue-like shaped portion downward approximately 90 degrees. A rectangular locking hole 121 is formed at the tip of the locking piece 120.

<Earth metal fitting> The earth metal fitting will be described with reference to the drawings. As shown in FIGS. 5 and 6, the ground metal fitting 30 is formed by stamping from a rolled material of a metal conductor. In the present embodiment, a copper alloy whose surface is tin-plated in consideration of conductivity and rigidity is used.
As shown in FIGS. 5 and 6, the ground metal fitting 30 includes a base portion 310 and a leg portion 320. In the base 310, the upper side 326 and the left and right side sides 328 and 329 are substantially straight lines, and the lower side 327 is mountain-shaped. The leg part 320 includes two locking pieces 321 and 321 extending vertically from the lower side 327 of the base part 310. At the tip of the locking piece 321, an outwardly protruding chevron 325 is provided.

  As shown in FIGS. 5 and 6, the leg portion 320 is inserted into the perforated portion 61 in which the ground 62 of the circuit board 60 is formed, and then fixed by soldering. Thus, the ground 62 is electrically and mechanically connected. A space 322 for the locking piece 321 to bend inward is formed between the two locking pieces 321 and 321. The locking piece 321 is elastically bent in this space 322 when connected to the perforated part 61 formed slightly smaller than the distance between the outer surfaces. At that time, by applying outward pressure as a reaction force, it is electrically and mechanically connected to the inner peripheral surface of the perforated part 61 and the conductive ground 62 formed around the inner peripheral surface. When the locking piece 321 is connected to the perforated part 61, the upper side 325 a of the projecting part 325 having an outward chevron shape is associated with the lower peripheral part of the perforated part 61. As a result, the grounding metal 30 is locked to the perforated portion 61. The lower side 325b of the protruding portion 325 having an outward chevron serves as a guide when the leg portion 320 enters the perforated portion 61.

<Still> The strut will be described with reference to the drawings. As shown in FIG. 7, the latch 40 is a bent product of a metal wire. In this embodiment, a φ0.8 mm stainless steel wire is used in consideration of rigidity. The latch 40 includes a U-shaped main body 410 and shaft portions 420 and 420 whose tips extend outwardly on one axis. The latch 40 can be selectively moved between the fixed position and the release position of the mating connector when the shaft 420 is rotatably held by the bearing 130 of the shell 10. The main body 410 of the latch 40 includes a hooking portion 411 for hooking and operating a fingertip, and locking portions 412 and 412 for locking with a mating connector.

<Assembly of Earth Fitting> Assembly of the D-sub will be described with reference to the drawings. FIG. 8 is a process diagram showing assembly of the D-sub ground metal fitting according to the present embodiment, wherein (A) is a process of assembling a terminal to the insulator, and (B) is a process of assembling the ground metal fitting to the insulator; (C) is a process for completing the assembly of the ground metal fitting. FIG. 9 is a cross-sectional view taken along the line IX-IX in FIG. 8B, and is a process diagram illustrating the earth metal fitting assembly process in more detail. (A) is a process for starting the assembly of the grounding metal to the insulator, (B) is a process for assembling the grounding metal to the insulator, and (C) is a process for completing the assembly of the grounding metal to the insulator. 10A and 10B show a D-sub latch assembly according to the embodiment of the present invention, wherein FIG. 10A shows a process of assembling the latch to the shell, and FIG. 10B shows a process of completing the assembly of the latch. FIGS. 11A and 11B are process diagrams showing the assembly of the D-sub insulator and shell. FIG. 11A is a process of starting the assembly of the shell to the insulator, and FIG. 11B is a process of completing the assembly of the shell to the insulator. FIG. 12 is a view showing a state where the shell is put on the insulator after the assembly of the ground metal fitting shown in FIG. 9 is completed. 13 is a cross-sectional perspective view taken along the line XIII-XIII showing the connection structure between the grounding metal fitting and the shell shown in FIG.

  Assembly of the ground metal fitting will be described with reference to FIGS. Step 1 (FIG. 8A), the terminal 50 is mounted in the terminal hole 271 from the bottom surface 212 of the insulator 20. Step 2 (FIG. 8 (B), FIG. 9 (A), FIG. 9 (B)), the grounding metal 30 is attached to the grounding metal hole 231 from the upper surface 211 of the insulator 20. Step 3 ((C) of FIG. 8, (C) of FIG. 9), a downward pressing is applied to the rear end of the base 310 of the grounding metal 30, and the grounding metal 30 is inserted to the pressing position. The abutting portions 311 and 311 of the earth metal fitting 30 and the abutting portions 232 and 232 of the earth metal fitting hole 231 come into contact with each other at the pressing position of the earth metal fitting 30.

<Assembly of latch> Assembly of the latch will be described with reference to FIG. Step 1 (FIG. 10A), the main body 410 is pinched with a fingertip so that the tips of the latches 40 are close to each other. Step 2 (FIG. 10B), the shaft portion 420 of the latch 40 is fitted into the bearing portion 130 formed at the end portion of the shell 10. Step 3 ((B) in FIG. 10), when the shaft portion 420 is fitted into the bearing portion 130 in a normal state, the latch 40 is held in a state of being rotatable around the shaft portion 420. The latch 40 can be moved between the fixed position and the release position as a movable range in a state where the latch 40 is assembled to the shell 10. The latch 40 is guided to a fixed position or a release position according to the operation state by a cam structure including a convex portion provided in the bearing portion 130.

<Assembly of Shell and Insulator> The assembly of the shell and the insulator will be described with reference to FIG. Step 1 (FIG. 11A), the shell 10 is placed on the upper surface 211 of the insulator 20. Step 2 (FIG. 11A), the hood 150 of the D-shaped shell 10 is aligned with the fitting portion 270 of the D-shaped insulator 20, and the shell 10 is fitted in that state. Step 3 (FIG. 11B), the shell 10 is pushed to a position where the back surface of the base 110 of the shell 10 is in contact with the upper surface 211 of the base 210 of the insulator 20. When the locking piece 120 of the shell 10 advances along the locking groove 220 of the insulator 20, and the tip of the locking piece 120 hits the locking projection 221, it moves over it. Step 4 ((B) of FIG. 11), when the tip of the locking piece 120 gets over the locking projection 221, the locking hole 121 of the locking piece 120 fits into the locking projection 221 of the locking groove 220. . As a result, the shell 10
It is fixed to the insulator 20 at the regular assembly position. The holding portion 110 a of the base 110 of the shell 10 contacts the base rear end 310 a of the grounding metal 30.

<Mounting of D-sub> The mounting of the D-sub on the circuit board will be described with reference to FIG. The terminal 50 and the ground metal fitting 30 are connected to corresponding positions on the circuit board 60. The ground metal fitting 30 is fitted into the perforated part 61 corresponding to the tip of the leg part 320. The grounding metal 30 has a leg portion 320 covered with a front surface 213 of the insulator 20, a rear surface (not shown), and left and right side surfaces 215 and 216. Thereby, the possibility that an inadvertent force is applied to the leg part 320 is reduced, and dropping out is suppressed. The ground metal fitting 30 is pulled out of the insulator even when an inadvertent force is applied to the tip because the base rear end 310a is pushed by the shell 10 before and after the connection to the circuit board 60. There is no fear.

<Effect> According to the present embodiment, the following effects can be obtained.
The shell 10 and the insulator 20 include a locking structure of the locking piece 120 and the locking groove 220. Thereby, D-sub1 which can assemble | attach the shell 10 to the insulator 20 by one touch is obtained.
The latch 40 is pre-assembled to the shell 10. Thereby, D-sub1 which can assemble | attach the shell 10 and the insulator 20 easily is obtained.

The shaft portion 420 of the latch 40 is assembled to the bearing portion 130 at the end portion of the shell 10 so as to be rotatable about the shaft, and the biting groove is engraved in the bearing portion 130. As a result, the friction works depending on the amount of the latch to be tilted (depending on the raising amount), and the D-sub 1 guided to the fixed position or the release position according to the operation state is obtained.
-Since there is no protrusion part from the surrounding surface of the insulator 20 in the earth | ground metal fitting 30, D-sub1 which does not have a worry to catch is obtained.
Since the ground metal fitting 30 is inserted from the top into the ground metal fitting hole 231 of the insulator 20, D-sub 1 that does not fall down is obtained.
-Since the ground metal fitting 30 has a structure in which the base rear end 310a is held by the shell 10, there is obtained a D-sub1 that does not have to worry about coming off.

1 D-sub
DESCRIPTION OF SYMBOLS 10 Shell 110 Base 110a Holding part 120 Locking piece 121 Locking hole 130 Bearing part 131 Projection part 140 Connection piece 141 Contact part 150 Hood 20 Insulator 210 Base 211 Upper surface 213 Front face 215 Side face 216 Side face 220 Locking groove 221 Locking convex part 230 Insertion port 231 Grounding metal hole 232 Contact part 240 Restriction part 270 Fitting part 271 Terminal hole 30 Grounding metal part 310 Base 310a Base rear end 311 Contact part 320 Leg part 321 Locking piece 322 Space 325 Projection part 326 Upper side 327 Lower side 40 Latch 410 Main Body 411 Hook 412 Locking 420 Shaft 50 Terminal 60 Circuit Board 61 Perforation

Claims (3)

A connector including an insulator in which a terminal hole in which a terminal is disposed is formed, and a shell made of a conductor attached to a fitting surface of the insulator,
When the shell is assembled to the circuit board, connected by connecting pieces to the plate surface of the plate-shaped ground brackets having a uniform thickness for continuity with the ground of the circuit board, the grounding bracket, the circuit board A portion to be connected to the perforated portion is divided into two locking pieces, and is attached to the perforated along the fitting direction of the insulator from the fitting surface side, and at least the end of the cut surface on the straight line at the rear end A connector characterized in that the portion is provided in a state of being closed by the back surface of the shell.   The shell includes an engaging portion for holding a fixed state at a normal mounting position with respect to the insulator, and the insulator includes an engaged portion at a position corresponding to the engaging portion. The connector according to claim 1.   The shell is characterized in that it is provided with a latch that is assembled to a longitudinal end edge so as to be axially rotatable and can hold a fitting state with a mating connector or can be adjusted to each position for releasing the holding. The connector according to claim 2.

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