JPH0419977A - Frame grounded type connector structure - Google Patents

Abstract

PURPOSE:To shorten the ground passage of a frame and to prevent detachability of connectors from being deteriorated by inserting a first connector into a second connector, and bringing one end of a contact into contact with the frame side of the second connector so as to achieve grounding continuity, and also engaging the end with the second connector. CONSTITUTION:When a slide lever 44 is located nearer to the end 42a of a contact 42 the contact 42 is opened. Under these conditions a cable side connector 10 is fitted in an equipment side connector 20. Next the slide lever 44 is shifted toward the free end of the contact 42 and locked by an L-shaped portion 43. The contact 42 is then pressed by the lever 44 and a contact portion 42b makes contact with the side face of the shell portion 21 of the connector 20 and is engaged with the hook portion 51 of the connector 20 to prevent the connector 10 from coming off. Grounding conduction is therefore achieved through the frame body 11 of the connector 10, a connector cover 41, the contact 42, and the shell portion 21 of the connector 20. To pull the connector 10 out of the connector 20, the lever 44 is shifted to the end portion 42a side of a guide hole 43.

Description

[Detailed Description of the Invention] [Summary] A first connector and a second connector are removably fitted to each other, and at the time of this fitting, a ground between a frame of the first connector and a frame of the second connector is connected. Regarding the frame grounding type connector structure that conducts electrical conduction, a cover is attached to the outside of the frame of the first connector in order to make the path for frame grounding as short as possible and not to impair the ease of attaching and detaching the connector. , a contact is provided in the cover, one end of which is electrically connected to the frame, and the other end of which cooperates with a hook portion of the frame of the second connector to form a detachment prevention mechanism, and the first connector is fitted to the second connector. In this state, the contact is moved between the lock position and the open position in order to press the other end of the contact against the frame side of the second connector to make electrical contact and engage the hook portion. A frame grounding type connector structure is constructed, which is characterized by providing a means for moving the connector.

[Industrial Field of Application] The present invention relates to a connector, and more particularly to a frame-grounded connector that establishes conduction between the frame itself and the ground of the connector.

2. Description of the Related Art Frame grounding type connectors are known in which the frame of the connector itself provides ground continuity in order to prevent the generation of interfering radio waves and malfunctions due to external noise that occur as connector devices increase in speed.

In such frame grounded connectors, miniaturization,
With the demand for higher density, it is required to make the grounding path of the connector as short as possible and to provide a function to prevent connectors from coming off.

[Prior Art] FIGS. 8 and 9 show conventionally known frame grounding type connectors. In these figures, 1 is the cable, 1
0 is a cable side connector, and 2o is a device side connector. The cable side connector 1° includes a frame body 11 made of an aluminum group made of die-casting or the like. The cable 1 has its outer ground braided wire 2 connected to the outer insulation sheathing part 15.
The ground braided wire 2 is fixed to the cable side connector 10 by the metal fitting 12 so as to be electrically connected to the frame body 11. The connector shell 13 of the cable-side connector 10 fixedly accommodates a large number of male or female contacts (not shown) inside via an insulator (not shown), and the signal line 3 of the cable 1 is connected to these contacts.

On the other hand, the device side connector 20 has a female or male type contact (not shown) corresponding to the contact of the cable side connector 10.
These contacts are connected to the inside of the device via wiring 22.

In the conventional example shown in FIG. 8, a connector cover 14 is provided on the outside of the frame body 11 of the cable-side connector 10, and a slip-off prevention piece 15 made of a springy metal is provided inside the connector cover 14. On the other hand, the device-side connector 20 is formed with a hook portion 23 that engages with the detachment prevention piece 15 . Therefore, in the process of fitting the cable-side connector 10 to the device-side connector 20, the connector shell 13 of the cable-side connector 1o is joined to the device-side connector 2o, and at the same time, the detachment prevention piece 15
engages with the hook portion 23 to maintain their joined state. Thereby, conduction is established between the connector shell 13, which is electrically connected and fixed to the frame body 11 of the cable side connector 10, and the device side connector 2o at the joint surface 30. Further, when pulling out the supply-pull side connector 10, the connector cover 14 is held down and the pull-out prevention piece 15 is removed from the hook portion 23 before being pulled out.

In the conventional example shown in FIG. 9, there is a fixing part 16 extending from the frame body 11 on the image side of the connector shell 13 of the cable side connector 1°, and on the other hand, the device side connector 20 also has fixing parts 24 on both sides of the shell part 21. There is. Cable side connector 1
After fitting o into the device side connector 20, the fixing part 16.2
4 spaces are constructed with 17 threads. Therefore, these fixed parts 16
．． Electrical conduction between the two is performed at the joint surface 31 between the two.

[Problem to be solved by the invention]

In the conventional example shown in FIG. 8, conduction is achieved through contact at the joint surface 30 between the cable-side connector 10 and the equipment-side connector 20, so the contact impedance increases due to dimensional intersection at each contact portion and a decrease in the contact area. In the conventional example shown in Fig. 9, the fixing parts 16 and 24 are fixed with screws 17, which requires a lot of mounting space, takes time to attach and detach, and requires a lot of time to ground the frame. There is a problem in that the number of intervening parts increases and the contact impedance increases.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a frame grounding type connector structure in which the path for grounding the frame is made as short as possible, and the ease of attaching and detaching the connector is not impaired.

[Means for Solving the Problems] In order to solve such problems, according to the present invention, a first connector and a second connector are removably fitted to each other, and at the time of the fitting, the first connector and the second connector are removably fitted to each other. In a frame grounded connector structure that provides ground continuity between the frame of one connector and the frame of a second connector, a cover is attached to the outside of the frame of the first connector, and within the cover, one end is electrically connected to the frame and Provided with a contact whose other end cooperates with the hook portion of the frame of the second connector to form a detachment prevention mechanism, and with the first connector fitted to the second connector,
The other end of the contact is pressed against the frame side of the second connector to bring it into electrical contact and to engage the hook portion. A frame grounded connector structure is provided.

[Effect]

According to the present invention, the first connector is fitted into the second connector.
When inserting, keep the contact open so that it does not interfere with insertion. When the fitting is completed, the other end of the contact is pressed against the frame side of the second connector to make electrical contact, and ground conduction is established. On the other hand, the other end of the contact is engaged with the hook portion of the second connector, thereby preventing the first connector from coming off from the second connector. When pulling out the first connector from the second connector, the contacts may be moved to the open position and pulled out in the same way as a normal connector.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In FIGS. 1(a) and (b), 1 is a cable, 10
2 is a cable side connector, and 20 is a device side connector.

The cable side connector 10 includes a frame body 11 made of aluminum made of guid cast or the like. The cable 1 has its outer ground braided wire 2 wound around the outside of the outer circumferential insulating coating 15, and the ground braided wire 2
is fixed to the cable connector 10 so as to be electrically connected to the frame body 11. The connector shell 13 of the cable-side connector 10 fixedly accommodates a large number of male or female contacts (not shown) inside via an insulator (not shown), and the signal line 3 of the cable 1 is connected to these contacts. On the other hand, the device side connector 20 has a connector shell 21 that accommodates female or male type contacts (not shown) corresponding to the contacts of the cable side connector 10, and these contacts are connected via wiring 22. Connected inside the device. The above structure is the same as that of a conventional connector.

In the present invention, the frame body 1 of the cable side connector 10
A connector cover 41 is fixedly attached to the outside of 1. A pair of contacts 42 made of conductive metal are symmetrically provided inside the both sides and outside the connector shell 13. The base ends 42a of these contacts 42 are fixed to the frame cover 41, and are electrically connected to the frame body 11 via the frame cover. The contact 42 has a proximal end 42
a toward the device side connector 20, and the tip extends slightly inward toward the shell portion 21 side of the device side connector,
A contact portion 42b that contacts the side portion of the shell portion 21 is formed. This contact portion 42b cooperates with hook portions 51 formed on both sides of the shell portion 21 of the device-side connector 20 to constitute a detachment prevention mechanism.

A slide lever 44 that can slide along the guide hole 43 of the connector cover 41 is provided on the back surface of the contact 42 . The guide hole 43 extends in the direction in which the contactor 42 extends, that is, in the direction in which the cable-side connector 10 is inserted, and has an L-shaped bent portion 43a at the tip end. The slide lever 44 is locked at this portion 43a. contact 4
2 is biased in the direction of opening on both sides so that its back side is always in contact with the slide lever 44.

Therefore, the slide lever 44 moves the contact 42 . proximal end 42 of
When it is on the side closer to point a, the contactor 42 is open (FIGS. 2(a) and 2(b)). In this state, the contacts 42 for fitting the cable-side connector 10 to the device-side connector 20 are open, so the contacts 42 do not interfere with fitting.

When the cable-side connector 10 and the device-side connector 20 are completely mated, the slide lever 44 is moved to the free end side of the contact 42, and the slide lever 44 is locked with the L-shaped portion 43a (FIG. 3(a)). and [has])). In this state, the contactor 42 is pressed by the slide lever 44, and its contact portion 42b contacts the side surface of the shell portion 21 of the device-side connector 20, and engages with the hook portion 51 of the device-side connector 2o. To prevent the cable side connector 1o from coming off. Therefore, the frame body 11 of the cable side connector 1o, the connector cover 41. Grounding is established through the contactor 42 and the shell portion 21 of the device-side connector 2o.

When pulling out the cable side connector 1o from the device side connector 20, move the slide lever 44 to the L-shaped lock part 4.
3a and move to the base end 42a of the guide hole 43. As a result, the pair of contacts 42 opens to both sides, the retaining mechanism is released, and the cable-side connector 10 can be pulled out.

In this way, by operating the slide lever 44, it becomes possible to easily attach and detach the connector and establish ground continuity between the frames.

Figure 4 (a) and (b) and Figure 5 (a) and (b)
2A and 2B are a plan view (partially in section) and a side view of another embodiment.

In this embodiment, a push button 46 is used in place of the slide lever 44 of the previous embodiment. As shown in the figure, this push button 46 consists of a head and a shaft on the outside of the connector cover 41, and the shaft has portions 46 protruding on both sides.
There is a. On the other hand, the connector force bar 41 has a protruding portion 46a.
An elongated hole 47 corresponding to the elongated hole 47 is provided, and the push button 46 is pushed in so that the protruding portion 46a of the push button 46 is aligned with the elongated hole 47, and rotated approximately 90 degrees to remove the protruding portion 46a.
is locked in the elongated hole 47. As a result, the push button 46 is locked in the pressed state, and the contact 42 is pushed toward the device-side connector. To release the lock, rotate the button 46 by approximately 90 degrees, align the protruding portion 46a with the elongated hole 47, and return the push button 46 to the outside. Other structural functions are similar to the previous embodiments.

Figure 6 (a) and (b) and Figure 7 (a) and (b)
2A and 2B are a plan (partially sectional) view and a side view of still another embodiment. In this embodiment, a contact 48 for frame grounding is used.
Shape memory alloys are used as This shape memory alloy is set so that it can contact and lock with the device side connector 2o at room temperature, and is set so that the opening/link is released when the temperature rises7. In addition, this contact 4
A hole 49 is provided in the connector cover 41 on the back side of 8.

Then, connect the cable side connector 10 to the device side connector 2o.
When mating, heat is applied to the contact through the hole 49, and the heating deforms the contact 48 toward the cover 41. When the temperature returns to room temperature after the mating is complete, the contact 48 contacts the equipment side connector 20. and locked.

[Effects of the Invention] According to the present invention as described above, when the first connector is inserted into the second connector and the fitting is completed, the other end of the contact is attached to the frame side of the second connector. When pressed and brought into electrical contact, ground conduction is established, and at the same time, the first connector is retained and locked by the hook portion of the second connector, thereby preventing the first connector from coming off from the second connector. This structure has the advantage that the mechanism is simple, the path for grounding can be shortened, and the connector can be easily attached and detached.

[Brief explanation of the drawing]

1(a) and 1(b) are plan (partially cross-sectional) and side views of a frame-grounded connector of the present invention, and FIG.
a) and (b) and FIGS. 3(a) and (b) are basically the same as the embodiment of FIG. 1, except that FIG. 2 shows the unlocked state and FIG. 3 shows the locked state. shows. Figure 4(a)
and ('b) and FIGS. 5(a) and (c) are plan (partially sectional) views and side views of other embodiments, FIG. 4 showing the unlocked state, and FIG. 5 showing the unlocked state. Indicates lock status. 6(a) and (b) and FIG. 7(a) and (b) are plan (partially sectional) views and side views of still other embodiments, and FIG. 6 shows the unlocked state. 7 shows the locked state. FIG. 8 shows a conventional example, and FIG. 9 shows another conventional example. 1...Cable 2...Ground wire 3...Signal line 10...Cable side connector 11...Frame body 12...Metal fitting 13...Shell 20...Device side connector 21...・Shell (frame) 22...Signal line 41...Cover''- 42...Contact 43...Guide hole 44...Slide lever 51...Hook part (a) (b) Implementation of the invention Basic example diagram 1: Cable 2: Ground braid 3: Signal line 10: Cable side 2, bracket 11: Main body (frame) 12: Metal fitting 13: Shell 20-419 device side connector 21...shell (flange 22...signal line 41 cover 42...contact 43...guide hole 44...slide cover 51...hook part) (a) (b) Second Figure 41... Cover 42... Contact 43... Guide hole 44... Slide cover 51... Hook part (a) Figure 3 (a) (b) Figure 4 46... Push button 47... Long hole (o) 46° (b) 5th lock (b) 68th 48... Contact 49... hole (a) (b) Same conventional example (1) 8th section 1. ... Cable 2 ... Ground #A wire 3 ... Signal line 10 ... Cable side connector 11 ... Main body 12 ... Metal fitting 13 ... Shell 14 ... Cover 15 ... Removal Prevention piece 20...Equipment side 2/Lid 21...Shell 22...Signal line 23...Hook part 30...Joint surface Conventional example (2) Fig. 9 16, 24...Fixing part 17...Screw 31...Joint surface

Claims (1)

[Claims] 1. The first connector (10) and the second connector (20) are removably fitted to each other, and at the time of the fitting, the first
In a frame grounded connector structure that provides ground continuity between the frame (11) of the connector and the frame (21) of the second connector, a cover (41) is attached to the outside of the frame of the first connector (10), and a cover (41) is attached to the outside of the frame of the first connector (10). A contact (42) is provided in the cover, one end of which is electrically connected to the frame (11), and the other end of which cooperates with the hook portion (51) of the frame (21) of the second connector to constitute a detachment prevention mechanism, With the first connector (10) fitted into the second connector (20), the other end of the contact is pressed against the frame (21) side of the second connector to make electrical contact, and the hook portion (5
1) A frame-grounded connector structure characterized in that means (44, 46) are provided for moving said contact between a locked position and an open position for engagement with said contact. 2. The contact (42) is normally biased toward the open position, and the means for moving the contact between the lock position and the open position is through a guide hole (43) provided in the cover (41). A slide lever (44) provided so as to be movable along the
The frame grounding type connector according to claim 1, wherein the slide lever (44) is configured to press the contact (42) to the lock position when the first and second connectors are in a fitted state. structure. 3. The contact (42) is normally biased toward the open position, and the means for moving the contact between the locked position and the open position is by inserting and removing the contact into the hole (47) provided in the cover (41). The push button (46) is configured such that when the first and second connectors are in a fitted state, the push button (46) is pushed in to push the contact (42) to the lock position. The frame grounding type connector structure according to claim 1. 4. The frame grounding type according to claim 1, wherein the contact (48) is made of a shape memory alloy, and the contact (48) is in a locked position at normal temperature and deforms to an open position when heated. Connector structure.