JPH0548253U - Connector with reverse mating prevention means - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a connector capable of reliably preventing reverse mating and incorrect connection. [Structure] A connector housing 1, contacts 3 of a plurality of poles that are respectively fitted in a plurality of pins 6 housed in the connector housing 1 and arranged in parallel on the connected member 5 side, and contacts 3 from the wall surface of the connector housing 1. Hole 8 extending in the inserting direction into the connecting member 5 and formed in the connected member 5 side
A locking claw 4 for preventing reverse fitting is provided so as to be fitted and locked only in the normal orientation with respect to the locking claw 4 for preventing reverse fitting.
Is at least the lower surface 1 of the connector housing 1 at the tip.
When it is projected downward from a and is about to be inserted in the reverse direction, the locking claw 4 for preventing reverse fitting abuts against the surface 5a of the connected member 5 without the mounting hole 8 for fitting. I tried to prevent it. Further, the locking claw 4 for preventing reverse fitting has a tip portion protruding largely downward from the lower surface 1a of the connector housing 1, and when the contact 3 tries to be inserted in the reverse direction, the contact 3 becomes a pin 6. Avoid contact.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connector used for connecting a cable to a member to be connected such as a printed circuit board, and more particularly to a connector provided with a reverse fitting preventing means.

[0002]

[Prior Art]

 When connecting the contact of the connector to which the cable is attached to the male pin protruding from the printed circuit board to connect the cable and the circuit board, make sure that the connector is fitted only in the correct orientation and not in the inverted orientation. It is necessary to provide reverse fitting prevention means. Also, with this type of connector, if you try to insert the connector in the inverted position with the power turned on, as in the case of adjustment during manufacture or during repair, the circuit may be connected incorrectly even for a moment. There is a risk of destroying the element. In order to prevent this, not only reverse fitting is prevented, but also the contact of the connector does not contact the male pin on the printed circuit board side. Conventionally, as a reverse fitting preventing means for such a connector, for example, as shown in FIG. 7, a contact pitch P1 of a connector housing 11 for accommodating a female contact 13 to which a cable 12 is connected is changed only at one position, and P2 is changed. As described above, the male pins 16 are projectingly provided on the substrate 15 side at a pitch matching these contact pitches P1 and P2. By changing the pitch in this way, even if the connector is turned upside down and pushed into the male pin 16 on the board 15 side as shown in FIG. Since it is not connected to, the reverse fitting can be prevented.

[0003]

[Problems to be solved by the device]

 However, the above-described conventional reverse fitting preventing means has a drawback in that the size for one pitch in which the female contact 13 is not provided is wasteful and the shape of the connector housing 11 becomes large. In addition, as shown in FIG. 9, the connector may be erroneously mated in the state of being laterally displaced, and if the difference between the pitch P1 and the pitch P2 is small, the connector may be erroneously mated in the opposite direction. The housing 11 may be damaged or the female contact 13 in the housing 11 may be deformed, resulting in subsequent connection failure.

The present invention has been proposed in order to solve the problems of the conventional technique, and an object thereof is to provide a connector capable of reliably preventing reverse fitting and erroneous connection.

[0005]

[Means for Solving the Problems]

 In order to achieve this object, a connector with reverse fitting prevention means according to the present invention is provided with a connector housing and a plurality of pins which are housed in the connector housing and arranged in parallel on the connected member side. The contact of the pole and the mounting hole that extends from the wall surface of the connector housing in the insertion direction into the contact and is drilled on the connected member side are fitted and locked only in the proper orientation. A locking claw for preventing reverse mating is provided so that the tip of this locking claw for preventing reverse mating projects at least below the lower surface of the connector housing, and is inserted in the inverted orientation. In such a case, the locking claw for preventing the reverse fitting hits the surface of the connected member having no mounting hole to prevent the fitting.

In addition, the locking claw for preventing the reverse fitting has a tip portion protruding largely downward from the lower surface of the connector housing, and when the contact is attempted to be inserted in the reverse direction, It is configured so that it does not come into contact with the pins.

[0007]

【Example】

 Hereinafter, a specific embodiment of the connector with reverse fitting preventing means according to the present invention will be described in detail with reference to the drawings. An embodiment of this connector is shown in the perspective view of FIG. FIG. 2 is a vertical sectional view of this connector. In these drawings, a female housing 3 having a plurality of poles to which a cable 2 is connected is housed in a connector housing 1. A locking claw 4 for preventing reverse fitting is integrally provided on one side of the rear surface of the connector housing 1. The locking claw 4 has a wide inverted-L-shaped base portion 4a protruding from the housing 1 at a distance L, and a narrow locking piece from the projecting end portion of the base portion 4a descending downward. 4b projects downward. The tip of the locking piece 4b projects below the lower surface 1a of the housing 1. The width W1 of the base portion 4a and the width W2 of the locking piece 4b may be the same. The printed circuit board 5 to which this connector is connected is provided with a plurality of male pins 6 having a plurality of poles fitted to the female contacts 3 and these male pins 6 are respectively connected to the wiring patterns 7 of the printed circuit board 5. There is. The printed circuit board 5 is provided with a mounting hole 8 at which the locking claw 4 fits and locks when the connector is properly fitted.

In the connector configured as described above, in the case of the normal fitting state, the locking piece 4b of the locking claw 4 protruding from the housing 1 engages with the mounting hole 8 on the board 5 side as shown in FIG. While being stopped, the female contacts 3 on the housing 1 side are fitted to the male pins 6, respectively. On the other hand, when the connector is inserted into the board 5 in the opposite direction, since the locking piece 4b projects longer than the lower surface of the housing 1, the tip of the locking piece 4b is protruded as shown in FIG. It is possible to prevent the female contact 3 from being connected to the male pin 6 by the contact of the portion with the board surface 5a, and to prevent the reverse fitting and the incorrect connection of the connector.

Next, a connector of another embodiment shown in FIG. 5 will be described. In this embodiment, two locking claws 4 and 4 are integrally provided on both sides of the rear surface of the connector housing 1. The printed circuit board 5 is provided with two mounting holes 8, 8 into which the locking pieces 4b, 4b of the locking claws 4, 4 are fitted and locked.

Next, a connector of still another embodiment shown in FIG. 6 will be described. In this embodiment, the bases of the left and right locking claws 4, 4 projecting from the rear surface of the connector housing 1 are integrally connected by a connecting piece 9, and the locking claws 4, 4 are attached to the housing 1. Strength is increased.

The locking claw 4 may be provided on the front surface of the connector housing 1 or on one side surface of the housing 1. Further, in the above-described embodiments, the case where the connected member is the printed circuit board has been described, but the connected member may be something other than the printed circuit board, for example, a panel.

[0012]

[Effect of the device]

 As described above, according to the present invention, the locking claw for preventing reverse fitting is provided which projects downward from the wall surface of the connector housing below the lower surface of the housing. Side fitting hole is fitted and locked only in the proper fitting state, and in the reverse fitting state, the locking claw abuts the connected member side and the connector housing side contact is the connected member side pin. It prevents the connector from being mated backwards without touching. For this reason, it is not necessary to change the contact pitch as in the conventional case, so that the size of the housing can be prevented from increasing, and the connector cannot be mated in the laterally displaced or forced state. In addition, there is an advantage that it is possible to surely prevent reverse fitting and incorrect connection of the connector.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a connector according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a cross-sectional view showing a normal fitting state.

FIG. 4 is a cross-sectional view showing a state in which the reverse fitting state is blocked.

FIG. 5 is a perspective view showing a connector of another embodiment.

FIG. 6 is a perspective view showing a connector of still another embodiment.

FIG. 7 is a partially cutaway sectional view showing a conventional connector.

FIG. 8 is a partially cutaway sectional view showing a state in which reverse fitting is blocked by a conventional connector.

FIG. 9 is a partially cutaway cross-sectional view showing a state in which a conventional connector is erroneously reversely fitted.

[Explanation of symbols]

 1 Connector Housing 2 Cable 3 Female Contact 4 Locking Claw 4b Locking Piece 5 Printed Circuit Board 6 Male Pin 7 Wiring Pattern 8 Mounting Hole 9 Connecting Piece

Claims (2)

[Scope of utility model registration request] 1. A connector housing, contacts having a plurality of poles respectively fitted in a plurality of pins housed in the connector housing and arranged in parallel on the side of a member to be connected, and a wall surface of the connector housing to the contact. A locking claw for preventing reverse fitting, which extends in the insertion direction and is fitted and locked only in the proper direction with respect to the mounting hole formed on the side of the connected member, is projected. The locking claw for preventing reverse fitting has a tip projecting at least below the lower surface of the connector housing, and the locking claw for preventing reverse fitting when it is inserted in the reverse orientation. The connector with reverse fitting preventing means is characterized in that it hits the surface of the connected member having no mounting hole to prevent fitting. 2. A locking claw for preventing the reverse fitting has a tip portion protruding largely downward from a lower surface of the connector housing, and the contact contacts the pin when the plug is inserted in an inverted direction. A connector with a reverse fitting prevention means characterized in that it does not come into contact with each other.