JP3486840B2 - Connector mis-mating prevention structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing a connector and a mating connector from mating with each other in a posture in which the connector is vertically and horizontally reversed.

[0002]

2. Description of the Related Art A fixing structure for a cable connector hood disclosed in JP-A-5-275137 is shown in FIG.
This will be described with reference to FIG.

The cable connecting connector 42 and the I / O connector 45 provided on the printed circuit board 46 are provided with connector insertion ports 48, 48 'provided on the two stacked connector mounting panels 47, 47', respectively. Be connected through. The cable connecting connector 42 is fixed to the cable connector hood 41, and is connected to the interface cable 50 inside the cable connector hood 41.

Two connector mounting panels 47, 47 '
Can slide to the left and right respectively. The connector mounting panels 47, 47 'have connector insertion ports 48, 4 into which the cable connector hood 41 is inserted.
8'is provided, and the connector insertion ports 48, 48 'are provided with convex portions 49, 49', respectively.

Further, the cable connector hood 41 is provided with vertical grooves 43, 44 parallel to the inserting / removing direction and horizontal grooves 43 ', 44', respectively. The vertical groove 43 and the horizontal groove 43 'are provided. Are continuous, and the vertical groove 44 and the horizontal groove 4 are
4'is continuous.

When the cable connecting connector 42 is connected to the I / O connector 45, the vertical grooves 43 and 44 of the cable connector hood 41 are respectively formed in the convex portions 49 and 49 'of the connector mounting panels 47 and 47'. Fit. Furthermore,
When the connector mounting panel 47 is slid to the right and the connector mounting panel 47 'is slid to the left, the protrusions 49 and 49' are inserted into the lateral grooves 43 'and 44', respectively, so that the cable connector hood 41 is inserted. Is fixed to the connector mounting panels 47, 47 '. Convex portion 49,
49 'and the vertical grooves 43, 44 function as a polar key structure of the cable connector hood 41, so that the cable connector hood 41 is fitted to the I / O connector 45 in a posture in which the vertical and horizontal directions are reversed. Is prevented.

[0007]

In the conventional fixing structure for a cable connector hood, there is a drawback that the cable connector hood 41 is inserted into the connector mounting panels 47, 47 'at an angle. Further, when locking the cable connector hood 41, the connector mounting panels 47 and 47 'must be slid, which makes the operation complicated. Furthermore, connector mounting panel 4
The need for a large space in the direction in which 7, 47 'is slid is an obstacle to making the connector compact.

In view of the above, the present invention has improved the above-mentioned drawbacks of the prior art, and if the connector is inserted into the operation frame in a normal insertion state (inserted in a posture that is not upside down, left and right), the connector is inclined to the operation frame. Without being inserted, it is locked immediately, insertion in the reverse insertion state (insertion with the top, bottom, left and right turned upside down) is prevented, and the connector can be made compact. Is to provide.

[0009]

The present invention adopts the following means in order to solve the above problems.

1. It is composed of an operation frame and a connector that can be inserted into and removed from the operation frame. The operation frame has elastically deformable lances for locking the connector on both sides in the insertion direction and prevents reverse insertion of the connector. Each lance and each key are formed adjacent to each other in a direction orthogonal to the insertion direction of the connector, and the connector has protrusions on both sides in the insertion direction. , Each of the protrusions has a lock surface and a stop surface facing each other, and when the connector is normally inserted in the operation frame, the lock surfaces are locked to the lances, When the plug is reversely inserted into the operation frame, the stop surfaces come into contact with the keys, and the connector is inserted only halfway.

2. The erroneous fitting prevention structure for the connector according to 1, wherein each of the keys is located closer to the front side than the lance in the insertion direction.

3. 3. The front side of each of the keys in the insertion direction serves as an insertion port of an extraction jig for releasing each of the lances from each of the lock surfaces when the connector is extracted from the operation frame. Connector mis-mating prevention structure.

[0013] 4. The connector includes an operation frame and a connector that can be inserted into and removed from the operation frame, and the connector has a first protrusion and a second protrusion protruding in the insertion direction on only one side of the connector , Further protruding
A first projection and a second projection , the first projection and the second projection are formed so that the length dimension in the insertion direction and the width dimension in the direction orthogonal to the insertion direction are different, and the operation frame is
Second groove 及 corresponding to the first groove and the second projection corresponding to the first projection formed toward the insertion direction
And a stopper and a lance, and when the connector is normally inserted into the operation frame, the first protrusion enters the first groove, and the second protrusion includes the second protrusion. collision's enters the grooves, the front face of the projecting portion to the stopper
The rear surface of the protrusion is locked to the lance.
Is, when the connector is reversely inserted into the operating frame, the connector is erroneous connection prevention structure of a connector not inserted only halfway.

5. The first protrusion has a long length dimension and a narrow width dimension, and the second protrusion has a short length dimension and a large width dimension. Mating prevention structure.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An erroneous fitting prevention structure for a cable connector according to two embodiments of the present invention will be described.

First, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 10 to FIG. 12 are perspective views showing a schematic component structure of the present embodiment. Synthetic resin case 1
Inside the inside is a synthetic resin V-shaped mold frame 2
And a U-shaped plate frame 3 for reinforcing metal, which is mounted on the mold frame 2 in the direction of the arrow. The printed circuit board 8 is guided by a pair of upper and lower rails 4 and brought to a predetermined position. A pair of mold bosses 5A provided on the upper and lower outer sides of each metal operation frame 5 are slidably inserted into the plurality of grooves 2A formed on the upper and lower inner sides of the mold frame 2. A pair of cable connectors 6 is inserted in each operation frame 5 in the arrow direction. A pair of upper and lower sliders 7 are slidably inserted into and removed from a groove 2B formed in the upper and lower inner sides of the mold frame 2. A linear portion 7A, an inclined portion 7B, and a linear portion 7C are continuously formed on each slider 7. When each slider 7 is slid in the arrow closing direction of FIG. 12, each linear portion 7A first enters the gap between each pair of mold bosses 5A of the plurality of operation frames 5. Next, the inclined portions 7B guide the pair of mold bosses 5A of the plurality of operation frames 5 to slide the operation frame 5 with respect to the mold frame 2 in sequence. Subsequently, the linear portions 7C enter into the pair of mold bosses 5A of the plurality of operation frames 5, whereby the plurality of operation frames 5 are formed.
Is restrained the slide. At this time, the pair of cable connectors 6 respectively inserted in the plurality of operation frames 5
Is each header connector 9 provided on the printed circuit board 8.
Are sequentially fitted. When each slider 7 is slid in the arrow opening direction of FIG. 12, each cable connector 6 is detached from each header connector 9 contrary to the operation described above.

Next, the main points of the first embodiment of the present invention will be described with reference to FIGS. Figure 1 (a)
The perspective view of the state where the cable connector 6 was normally inserted in the operation frame 5 (namely, in a posture that upper, lower, left, and right are not reversed) is shown. FIG. 1B is an enlarged view of the main part in FIG. A first notch 6A and a second notch 6B are formed in two steps on both left and right sides of the cable connector 6,
A substantially rectangular parallelepiped projection 6C is formed in a range from one end side in the thickness direction of the notch 6B to a portion slightly beyond the center. Figure 1
In the state of (a), each lock surface 6C1 of the pair of protrusions 6C is
Are locked to a pair of elastically deformable lances 5B formed integrally with the operation frame 5. Operation frame 5
As shown in FIG. 4 and FIG. 11, a substantially L-shaped lance 5B is formed at the center and substantially L-shaped lances 5B are formed on both sides. Further, as shown in FIG. 1A, FIG. 2 and FIG. 4 to FIG. 9, a reverse insertion prevention key 5C (details will be described later) is cut and raised adjacent to each lance 5B in the operation frame 5. It is formed by shaving. A large number of contacts 6D are arranged side by side on the front end side of the cable connector 6, and a flat cable 6E is connected on the rear end side.

The state where the cable connector 6 is normally inserted in the operation frame 5 is shown in FIG. 1 (a), the right half of FIG. 4, the middle part of FIG. 5, the first column from the left side of FIG. 6, FIG. They are shown in the middle of FIGS. 8 and 9, respectively. In this state, the lock surfaces 6C1 of the pair of protrusions 6C of the cable connector 6 are locked to the tips of the lances 5B, so that the cable connector 6 is restrained in the normally inserted state. When removing the cable connector 6 from the operation frame 5, as shown on the right side of FIG. 7 and the right side of FIG.
Is inserted between the right side surface of the cable connector 6 and the lance 5B, the lance 5B is elastically deformed, and the tip of the lance 5B is removed from the lock surface 6C1 of the protrusion 6C of the cable connector 6. Similarly, the left side surface of the cable connector 6 and the other lance 5B are also disengaged. After this, the cable connector 6
Can be removed from the operation frame 5.

Continuing on, the erroneous mating prevention structure of the first embodiment of the present invention is shown in the right half of FIGS. 1, 2, and 4, the upper and lower stages of FIG. 5, and the third column from the left side of FIG. Also, description will be made with reference to the upper and lower rows of FIG. 9. In the operation frame 5, the reverse insertion prevention keys 5C are cut and raised at four positions respectively adjacent to both outer sides of the central substantially U-shaped lance 5B and the left and right sides of the substantially L-shaped lance 5B close to the center. It is formed by shaving.

When the cable connector 6 is inserted back into the operation frame 5 (inserted in a posture in which the upper, lower, left and right sides are reversed), the pair of protrusions 6C of the cable connector 6 have respective stop surfaces 6C.
Since No. 2 contacts the tip of each reverse insertion prevention key 5C, the cable connector 6 cannot be reversely inserted any more. Therefore, erroneous fitting between the cable connector 6 and the mating connector (header connector 9 in FIG. 12) is prevented.

Further, a second embodiment of the present invention will be described with reference to FIGS.

The cable connector 16 is the operation frame 15
FIG. 13 and FIG. 14 show a state in which it is normally inserted into the. A wide and shallow groove 15E is formed on one side of the insertion port 15D of the operation frame 15, and a narrow and deep groove 15F is formed on the other side. Further, a pair of lances 15B are formed from both sides of the rear end of the operation frame 15 toward the inside of the insertion port 15D, and further a pair of stoppers 15G are provided from both sides of the front end of the operation frame 15 toward the inside. Has been formed. The cable connector 16 is provided with a number of contacts 16D aligned on the front end side, a flat cable 16E is connected to the rear end side, and a thick and short protrusion 16F is formed on one side of the rear end portion and a thin projection 16F is formed on the other side. The long protrusion 16G
Each is formed. In addition, the cable connector 16
A pair of protrusions 16H are formed on the outer surfaces on both sides of the.

Therefore, when the cable connector 16 is inserted in parallel with the insertion opening 15D of the operation frame 15, the protrusions 16F and 16G enter the grooves 15E and 15F, respectively, and the front surface of each protrusion 16H is provided with each stopper 15G.
At the same time, the rear surface of each protrusion 16H is locked to the tip of each lance 15B. Therefore, as shown in FIGS. 13 and 14, the cable connector 16 reaches a state where it is normally inserted into the operation frame 15.

However, as shown in FIGS. 15 and 16, when the cable connector 16 is reversely inserted into the insertion port 15D of the operation frame 15, on one side of the operation frame 15, a thin and long protrusion 16G is wide and shallow. 15E can only enter halfway, and on the other side of the operation frame 15, the thick and short protrusion 16F is narrow and cannot enter the deep groove 15F. Therefore, until the rear surface of each protrusion 16H is locked to the tip of each lance 15B,
The cable connector 16 is not inserted in the operation frame 15. Therefore, erroneous fitting between the cable connector 16 and the mating connector is prevented.

The cable connector 16 is the operation frame 15
17 shows a side view of the state in which it is normally inserted, and a side view of the state in which it is reversely inserted is shown in the third stage from the top stage of FIG.

FIG. 18 shows a schematic perspective view of a thick and short protrusion 16F and a thin and long protrusion 16G formed on the cable connector 16.

[0028]

As is apparent from the above description, according to the present invention, the following effects can be obtained.

1. Notches and protrusions are formed on both sides of the connector, and lances and reverse insertion prevention keys are formed on both sides of the operation frame, so in the normal insertion state, the connector is inserted into the operation frame without tilting and locked, and the reverse insertion state Then, the connector is inserted only part way into the operation frame, and therefore is not locked and is not inclinedly inserted.

2. The lance formed on the operation frame
Since it is located farther in the insertion direction of the connector than the reverse insertion prevention key, it is possible to insert the removal jig from the mating surface side of the connector (front release). Good workability.

3. Since two kinds of protrusions and a pair of protrusions are formed on the connector and two kinds of grooves and a pair of lances are formed on the operation frame, in a normal insertion state, each protrusion enters corresponding to each groove, and the connector is In the state of being locked in the operation frame and in the reverse insertion state, the protrusions do not correspond to the grooves and thus cannot enter, and the connector is not locked in the operation frame.

4. Since the size of each protrusion in the thickness direction of the connector is equal to or less than the plate thickness of the operation frame, no dead space is generated, so that the connector can be accommodated in the operation frame with high density.

[Brief description of drawings]

FIG. 1 (a) is a perspective view of a main portion of a connector according to a first embodiment of the present invention in a normal mating state of a cable connector and an operation frame in a connector misfit preventing structure, and FIG. Enlarged perspective views of essential parts are shown respectively.

FIG. 2 is a plan view of an operation frame according to the first embodiment of the present invention.

FIG. 3 is a front view of a state in which a cable connector is normally inserted in a part of a plurality of operation frames according to the first embodiment of the present invention.

FIG. 4 is a plan view showing a state where one cable connector is normally inserted and a state where the other cable connector is reversely inserted into the operation frame according to the first embodiment of the present invention.

FIG. 5 is a front view showing a state where the cable connector is normally inserted and a state where the cable connector is reversely inserted into the operation frame according to the first embodiment of the present invention.

FIG. 6 is a side view showing a state where the cable connector is normally inserted and a state where the cable connector is reversely inserted into the operation frame according to the first embodiment of the present invention.

FIG. 7 is a plan view showing the positions before and after the insertion of the removal jig when the cable connector is normally inserted in the operation frame according to the first embodiment of the present invention.

FIG. 8 is an enlarged view of part A in FIG.

9 is an enlarged view of part B in FIG.

FIG. 10 is a perspective view of an assembled state of the first embodiment example of the present invention.

FIG. 11 is a perspective view of the first embodiment of the present invention in an exploded state.

FIG. 12 is a schematic perspective view showing the relationship between the first embodiment of the present invention and the mating connector.

FIG. 13 is a front view of a normal insertion state of the cable connector and the operation frame in the connector mis-fitting prevention structure according to the second embodiment of the present invention.

FIG. 14 is a plan view showing a normal insertion state of the cable connector and the operation frame in the second embodiment of the present invention.

FIG. 15 is a rear view of the cable connector and the operation frame in the reverse insertion state according to the second embodiment of the present invention.

FIG. 16 is a plan view of the cable connector and the operation frame in the reverse insertion state in the second embodiment of the present invention.

FIG. 17 is a side view showing a state where the cable connector is normally inserted and a state where the cable connector is reversely inserted into the operation frame according to the second embodiment of the present invention.

FIG. 18 is a schematic perspective view of a cable connector according to a second embodiment of the present invention.

FIG. 19 is a perspective view of a conventional fixing structure for a cable connector hood.

[Explanation of symbols]

1 case 2 Mold frame 2A groove 2B groove 3 plate frame 4 rails 5 operation frame 5A mold boss 5B Lance 5C Reverse insertion prevention key 6 cable connector 6A 1st notch 6B 2nd notch 6C protrusion 6C1 Lock surface 6C2 stop surface 6D contact 6E flat cable 7 slider 7A Straight section 7B slope 7C Straight section 8 printed circuit boards 9 header connector 10 Removal jig 15 Operation frame 15B Lance 15D insertion slot 15E Wide and shallow groove 15F Narrow and deep groove 15G stopper 16 cable connector 16D contact 16E flat cable 16F Thick and short protrusion 16G Thin and long protrusion 16H protrusion

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-292588 (JP, A) JP-A-11-26076 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01R 13/64 H01R 13/639

Claims (5)

(57) [Claims] 1. An operation frame and a connector that can be inserted into and removed from the operation frame, wherein the operation frame has elastically deformable lances for locking the connector on both sides in an insertion direction, and the connector. A key for preventing reverse insertion of the connector, the lances and the keys are formed adjacent to each other in a direction orthogonal to the insertion direction of the connector, and the connector has both sides in the insertion direction. Each of the protrusions has a lock surface and a stop surface facing each other, and when the connector is properly inserted into the operation frame, each lock surface is attached to each lance. When the connector is locked and the connector is reversely inserted into the operation frame, the stop surfaces come into contact with the keys, and the connector is inserted only halfway. Prevents mis-mating of the connector. 2. The erroneous fitting prevention structure for a connector according to claim 1, wherein each of the keys is located closer to the front side in the insertion direction than each of the lances. 3. The front side of each of the keys in the insertion direction serves as an insertion port of an extraction jig for releasing each of the lances from each of the lock surfaces when the connector is extracted from the operation frame. An erroneous mating prevention structure for a connector according to claim 1 or 2. 4. An operation frame and a connector that can be inserted into and removed from the operation frame, and the connector has a first protrusion and a second protrusion protruding in the insertion direction on one side of the connector. It has only a further protrusion
A, wherein the first protrusion and the second protrusion, the formed direction of insertion length and width dimensions in the direction perpendicular to the insertion direction to be different, the operating frame, the insertion direction A first groove corresponding to the first projection and a second groove and a slot corresponding to the second projection, which are formed toward each other .
When the connector has a topper and a lance, and the connector is normally inserted into the operation frame, the first protrusion enters the first groove, and the second protrusion includes the second protrusion. Enter the groove and the front surface of the protrusion abuts the stopper.
Alternatively, the connector erroneous fitting prevention structure is characterized in that the rear surface of the protruding portion is locked to the lance, and when the connector is reversely inserted into the operation frame, the connector is inserted only halfway. 5. The first protrusion has a long length dimension and a small width dimension, and the second protrusion has a short length dimension and a large width dimension. 5. The structure for preventing incorrect fitting of a connector according to claim 4.