JP2570893Y2 - Contact spring structure for detection of mating detection connector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the detection of a mating detection connector which enables a reliable contact between a detection terminal and a detection contact spring member in a mating detection connector for detecting a mating of a male / female connector. The present invention relates to a contact spring structure for use.

[0002]

2. Description of the Related Art FIG. 7 shows the structure of a contact spring portion for detection of a conventional mating detection connector described in Japanese Utility Model Publication No. 4-3419. In this structure, a sub-housing 33 made of an insulating resin having a terminal accommodating chamber 31 and a contact member insertion portion 32 is provided in one connector housing 29, and a pair of detection terminals 34 are arranged in the accommodating chamber 31 in a left-right direction. (Only the near side is shown) to project each end male tab 35 in parallel from the sub-housing 33, and a pair of steps of a substantially U-shaped contact member 36 inserted and locked in the insertion portion 32. Of the flexible lock arm 40 of the other connector housing 39 by contacting the contact spring pieces 37 and 38 of each of the male tabs 35 such that one 38 is always in contact and the other 37 is in non-contact.
The pair of male tabs 35 and the pair of contact spring pieces 37 and 38 are connected to each other by pressing the contact spring piece 37 on the non-contact side as shown by a dashed line so that the fitting of the connector 28 is detected. It is.

However, in the above-mentioned conventional structure, since the displacement of the contact spring piece 37 on the non-contact side is small, a large contact pressure with respect to the male tab 35 cannot be set. When repeated, there is a problem that the contact spring piece 37 becomes loose and the contact with the detection terminal 34 becomes insufficient, and the fitting detection performance is deteriorated.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned point, the present invention provides a fitting which can always contact a contact spring member with a sufficient contact pressure with a detection terminal and can always perform a reliable fitting detection. It is an object of the present invention to provide a detection contact spring structure of a detection connector.

[0005]

SUMMARY OF THE INVENTION In view of the above, the present invention provides a flexible lock arm of one connector housing having a pair of protruding detection terminals and a through hole facing the detection terminals. A contact portion of a detection contact spring member for urging the flexible lock arm in the anti-deflection direction is inserted between the flexible lock arm and the detection terminal, and the contact portion enters the through hole. In a fitting detection connector in which a projection can be pressed by an engagement projection of the other connector housing with respect to the through hole, a buffer spring portion is formed between a contact portion of the detection contact spring member and an entry projection. A contact spring structure for detection is used.

[0006]

The engagement projection of the other connector housing enters the through-hole of the flexible lock arm of the one connector housing simultaneously with the mating of the connectors, and presses the entry projection of the contact spring member for detection. The contact portion of the contact spring member is pressed against the detection terminal. Here, the buffer spring portion of the contact spring member for detection bends to absorb the excessive pressing force of the engaging projection, and makes the contact portion elastically contact the terminal for detection. This ensures a reliable electrical contact at all times.

[0007]

1 to 3 show the structure of a contact spring for detection of a mating detection connector according to the present invention. This structure
As shown in FIG. 1, a flexible lock arm 2 provided on one connector housing 1 and male tabs 5, 5 protruding from a pair of detection terminals 4, 4 provided on a lower half 3 of the flexible lock arm 2. The buffer spring part 7 of the contact spring member 6 for detection is arranged between them.

As shown in FIG. 2, the contact spring member 6 for detection has a pair of male tabs 5 and 5 with contact portions 9 and 9 orthogonally coupled to the distal ends of long spring portions 8 and 8 facing left and right, respectively. At the same time, the buffer spring portions 7, 7 are formed in a symmetrical self-shape from each contact portion 9 toward the lower surface of the distal end portion 10 of the flexible arm 2, and the flexible arm is provided at the upper end of each buffer spring portion 7. The contact portion 11 is connected to the front end portion 10 of the second end portion 2, and the projecting portion 13 of the front end portion 10 with respect to the through hole 12 is provided at the center of the contact portion 11.
And a short spring portion 16 that constantly urges the lower half 3 of the flexible arm 2 is connected to the base end of the longitudinal portion 8 via an engaging coil portion 15 with respect to a support shaft 14 of the connector housing 1. It is composed. When the connector is not fitted, the contact portion 9 is separated upward from the male tab 5, and the contact portion 11 urges the distal end portion 10 of the flexible arm 2 in the anti-bending direction (upward).

As shown in FIG. 2, the cushioning spring portion 7 includes an inner vertical portion 17 extending upward from the inner end of the contact portion 9 and a horizontal portion 18 extending outward from the vertical portion 17 and parallel to the contact portion 9.
An outer vertical portion 19 extending from an outer end of the horizontal portion 18 toward the contact portion 11, and a corresponding contact portion 11 parallel to the horizontal portion 18.
As shown in FIG. 3, the connector is bent in the vertical direction at the same time as the fitting of the connector, and absorbs an excessive pressing force of the engaging projection 21 of the other connector housing 20. That is, the contact portion 11 and the horizontal portion 18 are inclined in opposite directions to bend and flex to absorb the pressing force, so that the contact portion 9 elastically contacts the male tab 5 of the detection terminal 4. As a result, a reliable contact pressure is always ensured, and plastic deformation of the male tab 5 due to excessive pressing is also prevented.

FIGS. 4 to 6 show the operation of the mating detecting connector 22 to which the detecting contact spring member 6 is mounted.
The mating detection connector itself has been proposed in Japanese Utility Model Application No. Hei 5-18985, and a female connector housing 1 in which a flexible lock arm 2 having a through hole 12 at a distal end portion 10 as shown in FIG. The male tab 5 is inserted in parallel into the lower half 3 extending downward from the protruding base of the flexible arm tip 10.
A pair of detection terminals 4 and 4 projecting from the lower half front end 3a below the through hole 12; the detection contact spring member 6 inserted into the female connector housing 1; Male connector housing 2 having an engagement projection 21 at the tip of the inner wall for pressing the entry projection 13 engaged in the through hole 12 of the second connector 2
And 3.

[0011] Then, as shown in FIG.
The engagement protrusion 21 of the male connector housing 23 slides on the distal end portion 10 of the flexible lock arm 2 and pushes down the flexible arm 2 against the urging of the contact spring member 6 for detection. Further, as shown in FIG. 6, at the same time as the connector is fitted, the engaging projection 21 pushes down the entry projection 13 in the through hole 12 of the flexible arm 2 to press the contact portion 9 against the male tab 5 of the detection terminal 4. . Here, since the buffer spring portion 7 is disposed between the entry protrusion 13 and the contact portion 9, the buffer spring portion 7 always secures a reliable contact pressure and excessively presses the engagement protrusion 21. By male tab 5
To prevent plastic deformation of

[0012]

As described above, according to the present invention, according to the present invention, the buffer spring portion of the contact spring member for detection absorbs the excessive pressing force of the engagement projection, and the contact portion elastically contacts the detection terminal. Therefore, reliable electrical contact is always obtained, and the detectability of the fitting of the connector is improved. In addition, since the buffer spring absorbs an excessive pressing force of the engaging projection, the detection terminal is prevented from being deformed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a detection contact spring portion structure of a mating detection connector according to the present invention.

FIG. 2 is a perspective view showing a contact spring member for detection.

FIG. 3 is a perspective view showing an operation of a buffer spring portion of the contact spring member for detection.

FIG. 4 is a longitudinal sectional view showing a state before the fitting detection connector is fitted.

FIG. 5 is a longitudinal sectional view showing a state in which the fitting is being performed.

FIG. 6 is a longitudinal sectional view showing a state after fitting.

FIG. 7 is a longitudinal sectional view showing a conventional example.

[Explanation of symbols]

 2 Flexible Lock Arm 4 Detection Terminal 7 Buffer Spring 6 Detection Contact Spring Member 9 Contact Part 12 Through Hole 13 Entry Protrusion 21 Engagement Protrusion 22 Fitting Detection Connector

Claims (1)

(57) [Scope of request for utility model registration] 1. A flexible lock arm of one connector housing is provided with a pair of protruding detection terminals and a through hole facing the detection terminal, and between the flexible lock arm and the detection terminal. A contact portion of a contact spring member for detection that urges the flexible lock arm in the anti-deflection direction is inserted into the contact portion. A mating detection connector which can be pressed by a projection, wherein a buffer spring portion is formed between a contact portion of the detection contact spring member and an entry projection. Contact spring structure.