JPH0834115B2 - Miniature DIN Receptacle Connector - Google Patents

Description

The present invention relates to a miniature DIN receptacle connector that mates with a DIN plug connector surrounded by a conductive shield.

[Conventional technology]

As is well known, miniature DIN connectors are used to interconnect computers, audio devices, video devices, etc. The requirements for these DIN connectors are the plug terminals of the DIN plug connector and the miniature D
It means that it is necessary to shield the EMI generated at the connection interface of the receptacle terminals of the IN receptacle connector or the EMI generated in the wire connected to the DIN plug connector in these connectors.

For this reason, DIN connectors with some shields have been proposed. One of them is an electrical connector disclosed in Japanese Utility Model Laid-Open No. 1-158675. That is, a miniature DIN receptacle connector for fitting to a DIN plug connector to which a conductive shield is attached so as to surround a plurality of plug terminals, and this miniature DIN receptacle connector is a housing having a plurality of receptacle terminals. An inner shield located around the plurality of terminal receiving holes of the housing and an outer shield located around the housing, and a ground contact is formed on each of the inner shield and the outer shield. Together with the above external shield, the above DI
A contact is formed to connect to the conductive shield of the N plug connector, and when the plug terminal of the DIN plug connector is fitted and connected to the receptacle terminal of the miniature DIN receptacle connector, the contact contacts the conductive shield of the DIN plug connector. It is an electrical connector configured to be capable.

In the case of this conventional technique, the contact for connecting the outer shield and the conductive shield of the DIN plug connector is formed at the front end of the outer shield and overhangs the front surface of the housing surrounded by the outer shield.

[Problems to be Solved by the Invention]

According to the above conventional technology, the DIN
EMI that occurs at the contact surface of the plug connector terminal and the receptacle terminal of the miniature DIN receptacle connector can be shielded, and the conductive shield of the DIN plug connector and the external shield of the miniature DIN receptacle connector are in contact with each other, so grounding the plug Although it has advantages such as lowering impedance, it has the following improvements.

In other words, miniaturization of the DIN connector itself is required along with the miniaturization of the application partner of the audio device to which the DIN connector is applied. From this point of view, in the conventional technology, the contact for connecting the outer shield and the conductive shield of the DIN plug connector is located at the front end of the outer shield and is largely outside the housing and overhangs on the front surface of the housing. After satisfying the function of connecting EMI and the conductive shield of the DIN plug connector as a measure against EMI,
There is a certain limit to miniaturization of the receptacle connector. In addition, since the contact connecting the external shield described below and the conductive shield of the DIN plug connector is projected on the front surface of the housing, the contact easily hits an external object and is easily deformed. When deformed, it may be difficult to insert / remove the DIN plug connector into / from the receptacle connector, or there may be a connection failure between the external shield of the DIN receptacle connector and the conductive shield of the plug connector.

〔Purpose〕

Therefore, the object of the present invention is to connect the external shield of the miniature DIN receptacle connector and the conductive shield of the DIN plug connector to further reduce the EMI generated at the contact interface between the receptacle terminal and the plug terminal.
Can be shielded and the grounding impedance with the plug can be lowered. In particular, in order to achieve the above advantages, the DIN receptacle connector can be more easily downsized, and the miniature DIN receptacle connector's external shield and DIN can be reduced. It is intended to prevent the deformation of the contact for connecting the conductive shield of the plug connector. This prevents the plug connector from being inserted into or removed from the miniature DIN receptacle connector, and prevents a contact failure between the outer shield of the miniature DIN receptacle connector and the conductive shield of the plug connector.

[Means for solving the problem]

In order to achieve the above object, the present invention has the following technical means. That is, the present invention will be described with reference to the reference numerals in the accompanying drawings corresponding to the embodiments. The present invention relates to a miniature DIN receptacle connector for fitting to a DIN plug connector having a conductive shield surrounding a plurality of plug terminals. 20, the miniature DIN receptacle connector 20 includes a front end 35 and a rear end 34, a top 36 and a bottom 3
7, a housing 22 having left and right side walls 38, 39 and having a plurality of receptacle terminals 24 in each of a plurality of terminal receiving holes 40a to 40h formed between the front end 35 and the rear end 34, and the housing 22. Has a plurality of terminal receiving holes 40a ~ 40h around the inner shield 26 and the housing 22 around the outer shield 32, and the inner shield 26 and the outer shield 32 each ground contact. 28 and 33 are formed, and the outer shield 32 has a contact for connecting with the conductive shield of the DIN plug connector.
57 is formed and the plug terminal of the DIN plug connector is the receptacle terminal of the miniature DIN receptacle connector 2
In a miniature DIN receptacle connector configured to allow the contact 57 to contact the conductive shield of a DIN plug connector when mated and connected to 4; external for connecting to the conductive shield of the DIN plug connector The contact 57 of the shield 32 is formed on the top 118 of the outer shield 32 such that its contact surface extends through the housing 22 and the inner wall shield 26 into the interior of the housing, while the top wall 36 of the housing 22 includes A hole 55 for passing the contact 57 is formed, and a groove for passing the contact 57 is also formed above the inner shield 26.
When the plug terminal of the DIN plug connector is fitted and connected to the receptacle terminal 24 of the miniature DIN receptacle connector, the contact 57 is formed.
Through the hole 55 defined in the top wall 36 of the housing 22 and the groove 27 of the inner shield 26 without directly contacting the inner shield 26 and directly inside the housing 22 to the conductive shield of the DIN plug connector. It is a featured miniature DIN receptacle connector.

[Embodiment] A miniature DIN receptacle connector of the present invention is shown by reference numeral 20 in FIGS. 1 and 12-15. As most clearly shown in FIG. 1, the miniature DIN receptacle connector 20 includes a housing 22 which is a one-piece mold of insulating plastic. The housing 22 comprises a plurality of through holes for receiving the terminals 24 and the same plurality of channels for receiving the soldering tails of the terminals 24. housing
The terminal receiving structure on 22 and the terminal 24 will be described in detail below.
It should be understood that FIG. 1 does not show all of the terminals 24. It should also be appreciated that the soldering tail 25 may be of different configurations.

The housing 22 is made to receive an annular conductive inner shield 26, which is a terminal.
It is sized to enclose the pin receiving contact portion of 24 and serves as a ground contact for electrical signals, and the pin 24 of the miniature DIN receptacle connector 20 and the pin of the DIN plug connector (not shown) to be mated therewith. Proper EMI shielding is created at the boundary with the terminal. The ground contact 28 of the annular inner shield 26 is a miniature DIN
Circuit board for mounting the receptacle connector (not shown)
Ground the inner shield 26 to. The annular inner shield 26 has an open groove 27 that is aligned with the hole 55 in the housing 22.

The base 30 with which the housing 22 engages in a lock is preferably, but not necessarily, integrally molded from an insulating plastic material of the same material from which the housing 22 is made. As will be explained below, holes for receiving and positioning the solder tails 25 of the terminals 24 in the mounting holes in the circuit board are examples of penetrating the base.

The miniature DIN receptacle connector 20 further comprises a conductive outer shield 32, which surrounds the four sides of the assembled housing 22 and base 30 to provide additional EMI shielding, especially the miniature DIN receptacle connector 2
It creates a shield from EMI generated by electric elements attached to 0. The external shield 32 has a low impedance contact 57 electrically connecting the external shield 32.
RF for shielding DIN plug connector (not shown)
Make a ground. This outer shield 32 is
Has a contact 33 that allows it to be grounded to the circuit board. The inner shield 26 and the outer shield 32 are not electrically or mechanically connected to each other. Inner shield
The outer shield 32 of 26 is separated by the housing 22 and the base 30 and serves a separate but complementary ground to the circuit board.

The housing 22 is shown in detail in FIGS. That is, the housing 22 has the rear end 34,
It includes a front end 35 of the front mating surface, a top portion 36, a bottom portion 37 and opposite side surfaces 38, 39. Multiple terminal mounting holes 40a-h
Extends the housing 22 from its rear end 34 to its front end 35. A circular mating hole 42a-h is formed where each mounting hole 40a-h intersects the front end 35 of the housing 22. This facilitates mating of the miniature DIN receptacle connector 20 and the DIN plug connector. Taper leads to
It is in. The rear of the mounting holes 40a-h is shown in FIG. 2 as having a rectangular cross section. The rectangular cross section of the terminal mounting hole 40 is shown in FIG. 1 and corresponds to the cross section of the terminal 24 shown in detail in FIG. It is desired that the shape of the terminal receiving holes 40a-h be different for terminals 24 of other shapes. The terminal mounting holes 40a-h include slots such as 44b, e, g to receive the tail of the terminal 24 and prevent vertical lifting of the terminal.

Multiple tail receiving channels 46 on the back 34 of the housing 22
The ah communicates with the terminal receiving holes 40a-h. Channel
46a-h are sized and positioned to receive and guide the solder tail 25 extending from the terminal 24 mounted in the terminal receiving hole 40a-h. It should be appreciated that the length and shape of the solder tail 25 of terminal 24 will depend on the channels 46a-h. As shown in FIG. 2, channels 46d, 46f, 46g, and 46h have a rear end 34 of approximately 0.020 inches.
At a first distance from channels 46a, 46b, 46c, 4
6e is a second distance from the trailing edge 34 of about 0.038 inches.
The different positions of the channels 46a-h cause the solder tails 25 of the terminals 24 to form two parallel rows, which are selectively connected to the conductive areas on the printed circuit board. Channel 46a-
Alignment of the solder tails allowed by h
Guaranteeing the position and alignment of the solder tails 25 with respect to the sides 38 and 39 of the 22 so that the loading of the terminals 24 into the housing 22 can be automated and further the mounting of the housing on the base 30 can be easily automated. To do so. With this arrangement, the slots 44 prevent the tabs of the terminals 24 from moving from the top to the bottom of the terminals 24 relative to the housing 22, while the channels 46 engage the tails 25 for side to side movement, as described below. It is blocking.

The housing 22 has an annular hole 48 which taps into its front end 35. The hole 48 is sized to slidably receive the annular inner shield 26. Housing hole 55 extends from top 36 of housing 22 to annular hole 48. Both sides 38, 39 of the housing 22 are attached to the base 30 as described below.
The projections 50 and 52 for locking the housing 22 are provided. In addition, the housing 22 includes a front flange 54 against which the outer shield 32 abuts.

Miniature DIN Receptacle Connector 20 Base 30
Is shown in FIG. That is, the base 30 has a bottom wall 56 to be mounted adjacent to a printed circuit board, a panel or the like. Feet 58 on the bottom wall 56 position the main portion of the miniature DIN receptacle connector 20 slightly away from the circuit board to allow flux to be cleaned.

The back wall 60 of the base 30 facilitates guiding the housing 22 into the proper position, and the terminals attached to the housing 22.
Insulates and protects 24. The back wall 60 blocks front-to-back movement of each terminal 24, thereby housing each tail 25.
Hold on 22 associated channels 46. Hole 62a-h is back wall 60
Through the bottom wall 56 of the base 30 adjacent to the housing 22
Solder tail 25 of terminal 24 extending from channels 46a-h of
Accept. The holes 62a-h are tapered to facilitate alignment and guidance of the solder tails 25. Solder tail 25
The alignment of the holes 62a-h with the back wall 60 is further facilitated. Deflection latches 64, 66 of base 30 are in locking engagement with protrusions 50, 52 on housing 22.

As mentioned above, the terminals 24 that attach to the housing 22
Includes a contact portion. Briefly, the contact portion of the terminal 24 is shown in FIG. 7 and its front end 72 is located substantially adjacent the front end 35 of the housing 22. The rear end 74 is not fully shown in FIG. 7, but includes the right angled solder tail 25 as shown in FIG. 1 and as shown in FIGS. 11-14. The shape of the solder tail is the channel 46a-
Follow the form of h. The tab 75 at the rear end 74 is slidably received in the slot 44 of the housing 22 and prevents top-to-bottom movement of the terminal 24 relative to the housing 22.

As shown in FIG. 7, the terminal 24 includes an intermediate portion 80 and a pair of spaced upright legs 82,84. The cantilevered contact beams 86, 88 extend forward from the legs 82, 84 towards the front end 72 of the terminal 24. The contact beams 86, 88 include inwardly convex contact surfaces 90, 92 that are moved away from each other when the plug terminals are inserted therebetween.
L-shaped connecting members 94 at the front ends of the contact beams 86, 88,
96 is a cantilevered contact beam 86 at the front end 72 of the terminal 24,
It extends vertically from 88. U-shaped elastic beam support piece 98
Extends between the connecting members 94 and 96 and connects them. U
The pair of arms 100 and 102 of the V-shaped elastic beam support member 98 extend in a pair from the connecting members 94 and 96, and the intermediate portion 104 of the elastic beam support member 98 integrally connects the arms 100 and 102. The beam support member 98 increases the elastic response range of each of the beams 86 and 88 to largely displace it, and at the same time exerts a large contact force on the pin inserted into the terminal 24. Miniature DI
The inner shield 26 of the N receptacle connector 20 is the 8th and 9th
This is shown in detail in the figure. That is, the inner shield 26 is provided with an outwardly extending inlet 106 which conforms to the mounting hole 48 of the housing 22. The contacts 28 on the inner shield 26 extend for attachment to a suitable ground on the circuit board. The contacts 28 are sized to fit in slots in both the housing 22 and the base 30. As shown most clearly in FIG. 9, the locking tongues 110, 112 of the inner shield 26 extend from either side of the housing 22 and
Locking engagement with the corresponding part of the annular hole 48 of the inner shield
Accept 26

Details of the outer shield 32 are shown in FIGS. 10 and 11. That is, the outer shield 32 is made from a piece of metal about 0.016 inches thick. The outer shield 32 includes side walls 114 and 116 that are opposed and parallel to each other, a top wall 118 that vertically extends integrally between these side walls, and a back wall portion 12 that vertically vertically extends from the side walls integrally.
0 and 122 are provided. The outer shield 32 extends from the top 118. First, it comprises a low impedance plug shield contact, indicated at 57. An example of a plug shield contact 57 that achieves low impedance contact with the plug shield of a DIN plug connector is described below. The contacts 124 and 33 of the outer shield 32 extend from the side walls 114 and 116, and the miniature DIN receptacle connector 20
It is possible to install the external shield 32 of the circuit board to which the Also, the lock claws 128-134 of the outer shield 32 are
Extending from the side walls 114 and 116 shown in Figures and 11 and engaging corresponding parts of the housing 22 from top to bottom of the outer shield 32 relative to the housing 22 as described below,
And prevent the movement from the front to the back.

The miniature DIN receptacle connector 20 is shown in exploded view in FIG. 1 and in assembled form in FIGS. 12-15. To assemble the miniature DIN receptacle connector 20, first connect the terminals 24a-h to the holes 40a-h in the housing 22.
To insert. Holes 40a-h after bending the solder tails 25a-h
Put in or bend as part of the insertion process.
A plurality of terminals 24a-h are simultaneously loaded by the terminal loading device.
Loading of terminals 2a-h into holes 40a-h causes solder tails 25a-h
Are located in channels 46a-h, respectively. Terminal 24a
-H tab 75 can be engaged in tab receiving slots 44a-h in holes 40a-h, toward bottom 37 of housing 22,
Alternatively, it prevents relative movement of terminals 24a-h away from it. Thus, each solder tail 25a-h is channel 4
Lateral movement is blocked by 6a-h and hole 40a
Housing 22 by tab engagement in slot 41 of -h
Prevent movement toward or away from the bottom 37 of the. As shown in FIGS. 12 and 13, the convex contact surfaces 90, 92 of the terminals 24a-h are aligned with the holes 42a-h of the housing, and the DIN plug connector (not shown) fitted with the connector 20 is provided. Receive the plug terminal of. Assembly of the miniature DIN receptacle connector 20 is accomplished by pushing the annular inner shield 26 into the annular hole 48 of the housing 22. However, the inner shield 26 is installed at the final stage of assembly of the miniature DIN receptacle connector 20. Housing 22, terminals 24a-h and inner shield 26
Attach the sub-assembly with the
Insert the solder tails 25a-h of 24a-h into the holes 62a-h of the base 30 Solder tails 25a- for the holes 62a-h of the base 30
Proper alignment of h is accomplished by the widened intakes into holes 62a-h and by the guiding action of the back wall 60 of the base 30. The solder tails 25a-h are fixed laterally with respect to the housing 22 by channels 46a-h,
This assures correct mounting on the base 30. Latch by movement of housing 22 towards base 30
64 and 66 are biased away from each other. base
When the seat 22 is fully seated in the housing 30, the latches 64, 66 resiliently return to their unbiased condition and engage the locking projections 50, 52 of the housing 22.

The outer shield 32 engages the assembled housing 22 and base 30, which are the inner shield 26 and the outer shield.
32 and away from each other. That is, the outer shield 32
The side walls 114 and 116 of the abutment contact the sides 38 and 39 of the housing 22 and the corresponding sides of the base 30. The top wall 118 of the outer shield 32 engages the top 36 of the housing 22 and
The two back walls 120 and 122 engage the back wall of the base 30 and surround them. The contacts 57 extend through holes 55 in the housing and extend between the ends of the annular shield 26, thereby separating the contacts 57 from the annular inner shield 26. The outer shield 32 extends beyond the bottom wall 56 of the base 30 and onto its feet 58. The outer shield 32 runs along the three sides of the DIN connector 20 and is a miniature DIN receptacle connector 2
Hit the circuit board to which 0 is attached. The apex-to-bottom retention of the outer shield 32 above the housing 22 is achieved by the pawls 128 and 130 engaging the recesses in the housing 22. Similarly, front-to-back movement of outer shield 32 relative to housing 22 and base 30 is accomplished by pawls 132 and 134, respectively.

Insert the positioned solder tails 25a-h into the holes in the circuit board and attach the assembled miniature DIN receptacle connector 20 to the circuit board (not shown) so that it is electrically connected to the defined conductive parts of the circuit board. Can be installed. Properly ground the contacts 28 extending from the inner shield 26 to the circuit board. Similarly, contacts 124 and 33 of outer shield 32 are properly grounded to the circuit board. However, the inner shield 26 and the outer shield 32 are miniature.
They are not electrically connected to each other within the DIN receptacle connector 20.

The outer shield 32 of the miniature DIN receptacle connector 20 acts to suppress EMI emissions by shielding against emissions from within the connector and by being a shield that blocks emissions through the holes in the shield at the front end 35. .

The cable connected to the DIN plug connector (not shown) that is combined with the miniature DIN receptacle connector 20 is a source of EMI emissions. A low impedance ground connection to avoid this emission is achieved by making the shortest direct connection between the outer shield 32 and the plug of the miniature DIN receptacle connector. Useful variants of this direct shortest path connection between the outer shield 32 and the plug terminals of the DIN plug connector are described below. First
The construction of the embodiment shown in FIGS. 16-24 will be better understood by first referring to FIG. As seen in FIG. 1, the annular inner shield 26 is provided with a long groove 27 at the top of the inner shield 26. The embodiment of the invention of Figures 16-24 comprises an annular outer shield 26 as shown in Figure 1 with a long longitudinal groove 27 at the top. Embodiments of the holes 55 and contacts 57 shown in Figures 16-24 are described in detail below.

Referring to FIG. The miniature DIN receptacle connector 220 is shown with the housing 222 having a top wall 236. A central hole 237 provided in the top wall 236 is aligned with the groove 27 of the inner shield 26. Figure 16 miniature
The DIN receptacle connector 220 comprises an outer shield 232 having a top wall 218. The top wall 218 is stamped to form a deflecting contact 238 that passes through a hole 237 in the housing 222 and a groove in the inner shield 26.
Go through 27. Miniature D to DIN plug connector
When combined with the IN receptacle connector 220, the length and angular arrangement of the deflection contact 238 ensure that the contact 238 makes a direct shortest path connection beyond the outer shield 232 and the conductive shield of the DIN plug connector (not shown). Select.

Figure 17 shows another miniature DIN receptacle connector 3
Shows 20. This miniature DIN receptacle connector 320 has a housing 3 with a top wall 236 with holes 337.
Contains 22. Hole 337 in housing 322 is hole 23 in FIG.
Longer than 7. Miniature DIN Receptacle Connector 320
The deflection contact 338 of the top wall 318 of the outer shield 332 is supported in the form of a cantilever from the rear position 340 of the outer shield 332 toward the front portion of the outer shield 332. The front portion of the deflecting contact 338 bends into the groove 27 of the annular inner shield 26 and forms a contact surface 342 that engages the conductive shield of the DIN plug connector when the plug is mated with the miniature DIN receptacle connector 320. The contact surface 342 of the deflecting contact 338 is bent to form a DIN into the miniature DIN receptacle connector 320.
This is to ensure smooth insertion of the plug connector. First
The shape of FIG. 17 is capable of producing a higher contact force than the shape of FIG. 16 and yet creates a large outer shield surface. That is, the initial deflection of the contact 338 causes the end 344 of the contact beam 338 to contact the top wall 318 of the outer shield 332. Further insertion of the DIN connector plug will significantly deflect around the contact point 342, creating a greater vertical contact force on it. The interaction between the deflecting contact 338 and the shield of the DIN plug connector effectively and desirably increases the force required to disconnect or disengage. This configuration minimizes the distance between the outer shield 332 and the shield of the DIN plug connector, the shortest path length being between the contact surfaces 342 and 344 of the deflection contact 338. The miniature DIN receptacle connector 420 shown in FIG. 18 includes the same housing 422 as the housing shown in FIGS. 16 and 17. That is, the housing 422 has a hole 43 in the center.
Includes top wall 436 with 7 open. The outer shield 432 has its front part 4
Top wall 418 with contacts 438 extending integrally from 40
Is included. Contact 438 is located in groove 27 of annular inner shield 26 for direct contact with the shield of the DIN plug connector (not shown). Deflection contact 438 defines plug contact surface 442 and shield contact surface 444. Deflection contacts 438 and D
A strong contact force is created with the shield of the IN plug connector. This strong contact force can achieve the desired effect of increasing the force required to keep it from coming off. In addition, the shape of contact 438 in FIG. 18 forms the shortest path between outer shield 432 and the shield of the DIN plug connector.

Figures 19 and 20 show another embodiment for achieving a direct connection between the mating DIN plug connector shield and the outer shield. In particular, FIG. 19 shows an outer shield 532 having a top wall 518 and a back wall 536. Biasable contacts 5
38 is cantilevered from position 540 on back wall 536 and extends forwardly to contact surface 542 to engage the shield of the DIN plug connector. The contact 538 is formed to form a second contact surface 544 that contacts the top wall 518 of the outer shield 532. As in the previously described embodiments, the deflectable contact 538 exerts a strong contact force on the DIN plug connector and the minimum path length between the DIN plug connector shield and the top wall 518 of the outer shield 532. To achieve. The DIN plug connector shield is appropriately deformed by a dimple or the like to provide a means of engaging the contact surface 542 and further increasing the disconnection force required to remove the DIN plug connector from the miniature DIN receptacle connector using the outer shield 532. ing. Outer shield 53
Miniature DIN Receptacle Connector to incorporate 2
It requires 20 slots in the top wall that extend from the back wall of the housing. Further, as shown in FIG. 20, the annular inner shield 526 has a large groove 5 at least adjacent its rear portion.
Need to provide 27. The groove 527 in the rear of the annular inner shield 526 is a DI that fits the deflectable contact 538.
It is sized to allow direct contact with the shield of the N plug connector.

Figure 21 shows miniature DIN receptacle connector 620
FIG. Ie, miniature DI
The housing 622 of the N-receptacle connector 620 comprises a top wall 636 having a centrally located hole 637 spaced from its front and back. Outer shield 632 top wall 61
A deflectable contact 638 formed by the central portion of 8 passes through hole 637 in annular inner shield 26 and groove 27. The deflectable contact 638 defines a contact surface 642 that engages the shield of the mating DIN connector plug. An engagement surface 644 defines a contact surface 642 that engages a corresponding structural portion of the DIN plug connector to increase the disengagement force required for disengagement. The embodiment of the outer shield 636 of FIG. 21 creates a minimum path between the outer shield 636 and the DIN plug connector. Further, deflectable contact 638 is formed without creating discontinuities in outer shield 632, thereby maintaining maximum surface area as outer shield 632.

22, 23 and 24 show another embodiment of a miniature DIN receptacle connector 820. In particular, the holes 8 in the top wall 836 of the housing 822 of the DIN receptacle connector 820
The 37 is centrally located, separated from both the front and the back of the housing 822. Outer shield 832 top wall 318
The continuous recesses in the form a very solid dimple contact 838 from the top 818 of the shield 832 through the groove 27 of the annular inner shield 26. The center contact surface 842 of the recess contact 838 extends in the groove 27 of the inner shield 26 without contacting the inner shield 26. The contact surface 842 is at the end remote from the outer shield 832 and has a substantial length that extends axially of the inner shield 26.

As shown in FIG. 23, the recess contact 838 has a front end 35
Has a U-shaped cross section in a plane parallel to, and contact surface 842 is flat in a plane parallel to the axis of inner shield 26.

Indented contact 838, as shown in FIGS. 23 and 24.
All sides of the are extensions a short distance from the top of the shield 818. The contact recess 838 is very stiff,
And due to the insertion of the DIN connector plug, all vertical deflection of the recessed contacts 838 is the effect of deflection of the top wall 818. This form of strong contact force between the DIN plug shield inserted in the connector and the recessed contact 838.

Figures 25, 26 and 27 show the miniature DIN receptacle connector and the most preferred embodiment housing 900, outer shield 930 and inner shield 960. As shown in these figures, this embodiment of the miniature DIN receptacle connector has outer shield extensions 932, 934 and inner shield extensions 962, 964 that fit into the front recesses 902, 904, 906 and 908. Two such recesses 906 and 908 extend from holes 910 in the inner shield to housing 900.
Into the front 912 of the and with the other two recesses 902
904 enters the housing 900 and the front surface 912 from the sides and top.

Referring to FIG. The outer shield extensions 932 and 934 of the outer shield 930 are front recesses 90 in the front 912 of the housing 900.
Enter 2 and 904 respectively. As shown in FIG. 27, extensions 962 and 964 of the inner shield 960 are located on the front 91 of the housing 900.
Enter the inner shield recesses 906 and 908 of 2. Inner shield extensions 962 and 964 and outer shield extensions 932 and 934 extend about 0.003 inches beyond the front surface 912 of housing 900. Extensions 962, 964, 932, and 934 strike and make electrical contact with a conductive ground chassis panel (not shown) having a DIN connector mounted therein. The inner shield 960 and outer shield 930 of this embodiment of the miniature DIN receptacle connector are either grounded via contacts 966, 936 and 938 or, or in addition, an extension 96.
2, and grounded through contact with the conductive chassis panel by 964, 932 and 934.

Increasing the force required to disengage the miniature DIN receptacle connector and the DIN plug connector described above to prevent unintentional disconnection or disengagement is often desirable, as noted above.
The direct connection embodiment between the outer shield of the miniature DIN receptacle connector and the mating DIN plug connector increases the force required to disconnect. In the embodiments or variations described above, the mating surface of the shield on the DIN plug connector and the annular inner shield of the miniature DIN receptacle connector are shaped to increase the force required to disengage. That is, FIG. 28 shows a DIN connector plug 700 having an annular shield 702. The annular shield 702 is characterized by an outwardly extending ridge 704. This DIN plug connector mates with a miniature DIN receptacle connector as described above. However, this mating miniature DIN receptacle connector is a ridge above the DIN plug connector 700.
It is arranged and sized to engage the 704.
The engagement of the holes 728 with the ridges 704 increases the force for disengagement, thereby preventing accidental disengagement. Or DI
The N-plug connector is provided with a ridge 706, which is arranged and sized to engage a slot 730 in the annular inner shield 726. The slot 730 is embossed during the formation of the locking means to lock the inner shield 726 into its housing (not shown) for mounting.

〔effect〕

As described above in detail, according to the present invention, the external shield of the miniature DIN receptacle connector and the conductive shield of the DIN plug connector are connected to each other, and the EMI generated at the contact interface between the receptacle terminal and the plug terminal is further increased.
Can be shielded and the grounding impedance with the plug can be lowered. In particular, in order to achieve the above advantages, the DIN receptacle connector can be more easily downsized, and the miniature DIN receptacle connector's external shield and DIN can be reduced. Deformation of the contact for connecting with the conductive shield of the plug connector does not occur. As a result, the plug connector is not hindered from being inserted into or removed from the miniature DIN receptacle connector, and there is no contact failure between the external shield of the miniature DIN receptacle connector and the conductive shield of the plug connector.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a miniature DIN receptacle connector of the present invention, FIG. 2 is a rear view of a housing of a miniature DIN receptacle connector of the present invention, and FIG. 3 is a sectional view taken along line 3-3 of FIG. FIG. 4 is a front view of the miniature DIN receptacle connector, FIG. 5 is a top view of the base, FIG. 6 is a sectional view taken along line 6-6 of FIG. 5, and FIG. 7 is used for the miniature DIN receptacle connector. Fig. 8 is a perspective view of the pin contact part of the terminal, Fig. 8 is a side view of the inner shield of the miniature DIN receptacle connector, Fig. 9 is a bottom view of the inner shield, and Fig. 10 is a front view of the outer shield of the miniature DIN receptacle connector. FIG. 11 is a side view of the outer shield, FIG. 12 is a front view of the assembled miniature DIN receptacle connector, and FIG. 13 is taken along line 13-13 of FIG. Sectional view, Figure 14 is a bottom view of the assembled miniature DIN receptacle connector, Figure 15 is a side view of the assembled miniature DIN receptacle connector, and Figure 16 is a partial cross-sectional view similar to Figure 13. FIG. 17 is a view showing the outer shield and the inner shield of FIG. 17, FIG. 17 is a partial sectional view similar to FIG. 16, and a view showing the structure of a second different shield, FIG. 18 is FIG. 16 and FIG. It is a similar partial sectional view,
Fig. 19 is a diagram showing the structure of another shield of Fig. 19, Fig. 19 is a diagram showing the fourth structure of the outer shield, Fig. 20 is a side view of the annular inner shield used with the outer shield shown in Fig. 19, and Fig. 21. FIG. 16 is a sectional view similar to FIGS. 16 to 18, showing a structure of a fourth alternative outer shield having means for engaging the shield of the miniature DIN receptacle connector plug on the outer shield, FIG. FIG. 19 is a sectional view similar to FIGS. 16 to 18, showing a structure of a fifth alternative shield, FIG. 23 is a front view of an outer shield of a miniature DIN receptacle connector including the configuration of FIG. 22, FIG. Is a cross-sectional view taken along the line 2-2 in FIG. 23, FIG. 25 is a perspective view of the housing having the recesses of the outer shield ground contact and the inner shield ground contact on the front surface, and FIG. 26 is the recess on the front surface of the housing. Has grounding contact Fig. 27 is a perspective view of the outer shield, Fig. 27 is a perspective view of the inner shield having a ground contact that is inserted into a recess in the front surface of the housing, and Fig. 28 is a cross-sectional view of the inner annular shield shown in Fig. 16-18. It is a development perspective view of a fitting DIN plug connector provided with a means to raise. In the figure, 20, 220, 320, 420, 820 ... Miniature DIN receptacle connector 22, 222, 322, 422, 822, 900 ... Housing, 24 ... Terminal, 25 ... Solder tail, 26, 526, 726, 960 …… Internal shield, 28 …… Contact, 30 …… Base, 32,232,532,632,832,930… External shield, 33 …… Contact,

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Henry Zirke Hoffman et State Carnation Lane, Illinois, USA 265 (72) Inventor David Lawrence Bruker Naperville Weatherford Lane, Illinois, USA 2310 (56) Reference JP-A-1-158675 (JP, A) Japanese Patent Laid-Open No. 2-30077 (JP, A) Actual Development No. 2-150682 (JP, U)

Claims (13)

[Claims] 1. A miniature DIN receptacle connector 2 for fitting to a DIN plug connector having a conductive shield attached so as to surround a plurality of plug terminals.
0 and this miniature DIN receptacle connector
20 is a front end 35 and a rear end 34, a top portion 36 and a bottom portion 37, and left and right side walls.
38, 39, and a plurality of receptacle terminals in each of a plurality of terminal receiving holes 40a to 40h formed between the front end 35 and the rear end 34.
A housing 22 having 24 and an inner shield 26 located around the plurality of terminal receiving holes 40a-40h of the housing 22.
And an outer shield 32 located around the housing 22
Further, ground contacts 28 and 33 are formed on each of the inner shield 26 and the outer shield 32, and the outer shield 32 has a contact for connecting to the conductive shield of the DIN plug connector. 57 is formed and the plug terminal of the DIN plug connector is a miniature DIN
In the miniature DIN receptacle connector, which is configured so that the contact 57 can come into contact with the conductive shield of the DIN plug connector when fitted and connected to the receptacle terminal 24 of the receptacle connector; The contact 57 of the outer shield 32 for connection is formed on the top wall 118 of the outer shield 32 such that its contact surface extends through the housing 22 and the inner shield 26 to the inside of the housing. A hole 55 for passing the contact 57 is formed in the top wall 36, and a groove 27 for passing the contact 57 is also formed above the inner shield 26.
When the plug terminal of the DIN plug connector is mated and connected to the receptacle terminal 24 of the miniature DIN receptacle connector, the contact 57 is divided into the hole 55 defined in the top wall 36 of the housing 22 and the inner shield 26. A miniature DIN receptacle connector characterized in that it can directly contact the conductive shield of the DIN plug connector inside the housing 22 through the groove 27 without contacting the inner shield 26. 2. The groove 27 of the inner shield 26 is a housing.
Terminal receiving hole 40a formed between front end 35 and rear end 34 of 22
~ 40b is formed along the front and rear of the inner shield 27 along the forming direction of the ~ 40b, and the hole of the housing 22.
55 is formed along the forming direction of the terminal receiving holes 40a to 40h formed between the front end 35 and the rear end 34 of the housing 22 from near the front portion of the top wall 36 of the housing 22 to the rear portion thereof. The miniature DIN according to claim 1, characterized in that
Receptacle connector. 3. The housing 22 is configured to be mounted on the base 30, and when the housing 22 is mounted on the base 30, the protrusions 50, 52 formed on the left and right side walls 38, 39 of the housing 22 are formed. The tails 25 of the receptacle terminals 24, which are respectively engaged with the left and right latches 64 and 66 provided on the bottom wall 56 of the base 30, and which are mounted in the terminal receiving holes 40a to 40h of the housing 22, are formed on the base 30. Holes 62a-62h
The miniature DIN receptacle connector according to claim 1, wherein the miniature DIN receptacle connector is configured to be led out to the outside through the. 4. The housing 22 of a miniature DIN receptacle connector includes a top portion 36, a bottom portion 37, and opposing left and right side walls 3.
8, 39, rear end 34 and form a front end 35 to mate with a DIN plug connector, the outer shield 32 is a side wall of the housing 82
The miniature DIN receptacle connector of claim 1 which surrounds 38, 39, top 36 and rear end 34. 5. A shield for a DIN plug connector, wherein a contact 238 formed on a top portion 218 of an outer shield 232 is stamped from the top portion 218 and supported like a cantilever, and fitted with the miniature DIN receptacle connector. The miniature DIN receptacle connector according to claim 4, wherein the miniature DIN receptacle connector contacts with the. 6. The outer shield 332 surrounding the sidewall, top and rear end of the housing 22 of the miniature DIN receptacle connector is integrally continuous with each other, and the contact 338 on the top 318 of the outer shield 332 is the outer shield 332.
5. The miniature DIN receptacle connector of claim 4, which is in the form of a deflectable contact arm supported in a cantilevered manner from the top 318 of the. 7. The contact 238 formed on the top wall 218 of the outer shield 232 is an outer shield near the front end of the housing 222.
The miniature DIN receptacle connector according to claim 5, wherein the miniature DIN receptacle connector is supported like a cantilever from the portion 232. 8. The miniature DIN receptacle connector of claim 6, wherein the contact 338 formed on the top wall 318 of the outer shield 332 is supported like a cantilever from the rear position 340 of the outer shield 332. 9. A contact surface 342 that contacts the conductive shield of the DIN plug connector on a contact 338 supported like a cantilever from a rear position 340 of the outer shield 332.
An end 344 extending toward the inner surface of the top wall 318 of the outer shield 332 is further formed at the tip of the contact surface of the contact 338 at the initial stage when the DIN plug connector is fitted and contacted with the miniature DIN receptacle connector. 3
When 42 contacts the conductive shield of the DIN plug connector, the end 344 is deflected so as to contact the inner surface of the top wall 318, and D for the miniature DIN receptacle connector.
The miniature DIN receptacle connector according to claim 6, wherein the contact force is gradually increased in the process of further fitting the IN plug connector to the final position. 10. The left and right side walls of the outer shield 32 and the lower part of the back wall extend to near the bottom of the housing 22 so that the outer shield 32 has an abutting relationship with a circuit board to which the miniature DIN receptacle connector is attached. Miniature DIN receptacle connector as described. 11. The miniature DIN receptacle connector according to claim 10, wherein a peripheral surface of the inner shield 26 is formed so as to extend in a direction perpendicular to the fitting front end 35 of the housing 22. 12. The groove 27 of the inner shield 26 is an outer shield.
11. The miniature DIN receptacle connector according to claim 10, wherein the miniature DIN receptacle connector is formed so as to be aligned with the formation position of the contacts 57 so as to pass the 32 contacts 57. 13. The contact 638 of the outer shield 632 includes:
The miniature DIN receptacle connector according to claim 1, wherein a contact surface 642 and a step-like engagement surface 644 are formed behind the contact surface 642.