JP2019016472A - Semi-mating prevention connector - Google Patents

Abstract

To provide a compact semi-mating prevention connector capable of preventing semi-mating, while improving longevity and handling.SOLUTION: A semi-mating prevention connector 10 includes: one connector 20 having one terminal 25 and a lock arm 27; the other connector 30 having a locking part 38 to which the lock part 28 of the lock arm 27 is locked when mating with one connector 20; and an elastic member 39 provided near the other terminal 35 of the other connector 30, and separating both connectors 20, 30 by energizing the one connector 20 in the opposite mating direction B when both connectors 20, 30 are in semi-mating state. When both connectors 20, 30 are semi-mating, the elastic member 39 is compressed by the lock arm 27 and deforms elastically, and when both connectors 20, 30 are mating, compression for the elastic member 39 by the lock arm 27 is released and the elastic member 39 is restored to the original state.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a half-fitting prevention connector having a half-fitting prevention function.

  As this type of half-fitting prevention connector, one shown in FIGS. 5 and 6 is known. As shown in FIGS. 5 and 6, the half-fitting prevention connector 1 includes a female connector 2 having a female terminal 4 on a female housing 3 and a pair of lock arms 3 a and 3 a outside the female housing 3, and The male housing 5 has a male terminal 7 and a male connector 5 having a locking recess 6a to which the lock projection 3b of the lock arm 3a is locked when fitted to the female connector 2 and a pair of the male housing 6. A pair of slide members 8, 8 slidably provided along the fitting direction A of the female connector 2, and slidable when the female and male connectors 2, 5 are half-fitted. And a compression coil spring 9 that urges the member 8 in the anti-fitting direction B of the female connector 2 to separate the female and male connectors 2 and 5. 5 and 6, reference numeral 6 c is a cover that covers the spring accommodating portion 6 b of the male housing 6.

  Then, in order to prevent half-fitting (half-way fitting), the repulsive force of the compression coil spring 9 is made stronger than the insertion force when the female and male connectors 2 and 5 are fitted, so that the lock arm 3a of the female connector 2 is obtained. The female connector 2 is pushed back by the elastic force (restoring force) of the compression coil spring 9 until the female terminal 4 and the male terminal 7 do not contact each other until the locking projection 3b of the male connector 5 and the locking recess 6a of the male connector 5 are locked. In the half-fitting of the female and male connectors 2 and 5, the female terminal 4 and the male terminal 7 are not conducted.

JP-A-11-111390

  However, in the conventional half-fitting prevention connector 1, since the compression coil spring 9 for preventing half-fitting is always subjected to a load after the connector is fitted, the service life of the compression coil spring 9 is shortened. In addition, since a spring strength greater than the connector detachment force (terminal detachment force) is required, the connector insertion force increases, handling becomes worse, the spring increases, and the size of the entire connector increases.

  Therefore, the present invention has been made to solve the above-described problem, and a small half-fitting prevention connector that can prevent half-fitting and can improve the service life and handleability. The purpose is to provide.

  The present invention is a half-fitting prevention connector having a function of preventing half-fitting, one connector having one terminal and a lock arm, and when the lock arm is fitted to the one connector. Provided in the vicinity of the other connector of the other connector having the locking portion and the other terminal for locking the locking portion, the one connector is counterfitted when the two connectors are half-fitted An elastic member that biases the two connectors apart from each other, and the locking portions of the locking arms of the one connector are locked to the locking portions of the other connector. At the time of half-fitting, the elastic member is pressed and elastically deformed by the lock arm, and the lock part of the lock arm of the one connector is engaged with the engagement part of the other connector. Time , And summarized in that the locking arm is pressed is released by relative to the elastic member is elastic member so as to be restored to its original state.

  In the half-fitting prevention connector of the present invention, the elastic member is provided coaxially with the other terminal of the other connector, and the position of the locking portion of the other connector is the restoring position of the elastic member. It is characterized by.

  According to the present invention, since no load is applied to the elastic member after the connector is fitted, the durability of the elastic member is increased, and the service life of the half-fitting prevention connector can be extended. In addition, since the elastic strength is greater than the terminal detachment force and the connector insertion force can be reduced, the handleability is improved, and the elastic member can be reduced, thereby reducing the overall size of the connector. Can be planned.

It is a perspective view which shows the principal part of the half-fitting prevention connector of one Embodiment of this invention in a cross section. It is sectional drawing which shows the state before the fitting of the said half fitting prevention connector. It is sectional drawing which shows the state in the middle of the fitting of the said half-fitting prevention connector. It is sectional drawing which shows the fitting completion state of the said half-fitting prevention connector. It is explanatory drawing which shows the state before the fitting of the conventional half-fitting prevention connector. It is explanatory drawing which shows the state of the completion of fitting of the said conventional half-fitting prevention connector.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a main part of a half-fitting prevention connector according to an embodiment of the present invention in cross section, FIG. 2 is a cross-sectional view showing a state before the connector is fitted, and FIG. FIG. 4 is a cross-sectional view showing a completed state of the connector.

  As shown in FIGS. 1 to 4, the half-fitting prevention connector 10 includes a pair of female terminals (one terminal) 25, 25 in a cylindrical hood portion 23 of a female housing 21 made of hard synthetic resin. A female connector (one connector) 20 extending a pair of lock arms 27, 27 on the upper and lower portions of the cylindrical hood portion 23, and a disk-shaped partition wall 32 of a hard male resin-made cylindrical male housing 31. A lock projection (lock portion) 28 of the lock arm 27 is engaged with a position on the front side of the partition wall 32 of the inner peripheral surface 31a of the cylindrical male housing 31. A male connector (the other connector) 30 having a locking recess (locking portion) 38 to be detached and a pair of male terminals 35, 35 provided on the partition wall 32 of the male housing 31 are provided on the same axis and locked. Lock projection of arm 27 When the two connectors 20 and 30 are half-fitted until 8 is locked to the locking recess 38 of the male housing 31, the female housing 21 is placed in the anti-fitting direction in contact with the lock protrusion 28 of the lock arm 27. And a pair of compression coil springs (elastic members) 39, 39.

  A pair of cylindrical female terminals 25, 25 are provided at the upper and lower portions of the center of a cylindrical female housing 21 of the female connector 20 and a disk-shaped partition wall 22 that partitions a cylindrical hood 23 having a smaller diameter than the female housing 21. Flange-shaped base portions 25a and 25a are embedded. An electric wire 26 is connected to the base end portions 25b, 25b of each female terminal 25.

  A pair of slits 23a, 23a are formed on the upper and lower portions of the hood portion 23 of the female housing 21, and a pair of slits 23a, 23a having a lock projection 28 at the tip is provided between the pair of slits 23a, 23a. The lock arms 27 and 27 are integrally formed to be bent and deformable. Each lock arm 27 extends from the tip of the hood portion 23 to the male housing 31 side by a predetermined length, and its lock projection 28 slides on the inner peripheral surface 31a of the male housing 31 to be locked. It is adapted to be engaged with the recess 38.

  On the upper and lower sides of the center of the disk-shaped partition wall 32 located on the rear side of the cylindrical male housing 31 of the male connector 30, there are compressed the male terminal 35 and the electric wire 36 connected to the base end portion 35 c of the male terminal 35. A cylindrical spring accommodating portion 33 whose front surface for accommodating the coil spring 39 is closed is integrally formed so as to communicate with the partition wall 32.

  A disk flange-like base portion 35b of each male terminal 35 is slidably provided in a pair of upper and lower cylindrical spring accommodating portions 33, 33, and a pin-like tab portion of each male terminal 35 is provided. 35a penetrates the circular hole 33a formed in the front wall of each spring accommodating part 33, and is exposed outside. Further, on the upper and lower sides of the pair of upper and lower cylindrical spring accommodating portions 33, 33, the lock projections 28 of the respective lock arms 27 are inserted, and the disk flange-like base portions 35b of the respective male terminals 35 are inserted and pressed. Openings 33b are formed respectively. Furthermore, each compression coil spring 39 has a disk flange-like base portion 35b and a base end portion 35c of each terminal 35 and a part of the electric wire 36 in a state where each compression coil spring 39 is inserted into each cylindrical spring accommodating portion 33. Is housed. The opening at the rear end of each spring accommodating portion 33 is closed by a cover 34 having a circular hole 34a at the center.

  Then, as shown in FIG. 3, both connectors 20, 30 until the locking projection 28 of the locking arm 27 of the female connector 20 is locked to the locking recess 38 of the inner peripheral surface 31 a of the male housing 31 of the male connector 30. At the time of half-fitting, the disk flange-shaped base 35b of the male terminal 35 is pressed by the tip of the lock projection 28 of the lock arm 27 to compress and deform the compression coil spring 39, and as shown in FIG. When the two connectors 20 and 30 are engaged with the locking projections 28 of the locking projections 28, the compression coil springs 39 are released from being pressed by the locking projections 28 of the locking arms 27 against the compression coil springs 39. It comes to return. That is, the position of the locking recess 38 on the inner peripheral surface 31a of the male housing 31 of the male connector 30 to which the lock projection 28 of the lock arm 27 of the female connector 20 is locked is the restoring position where the compression coil spring 39 returns to the original state. It has become.

  Further, in order to prevent half-fitting of the female and male connectors 20 and 30, the repulsive force of the compression coil spring 39 is made stronger than the insertion force when the female and male connectors 20 and 30 are fitted, thereby locking the female connector 20. The female connector 20 is returned to the position where the female terminal 25 and the male terminal 35 do not contact with each other by the compression coil spring 39 until the locking projection 28 of the arm 27 is locked to the locking recess 38 of the male housing 31 of the male connector 30. It is possible to prevent conduction between the female terminal 25 of the female connector 20 and the male terminal 35 of the male connector 30 due to the fitting.

  According to the half-fitting prevention connector 10 of the above embodiment, as shown in FIG. 3, in order to prevent half-fitting (intermediate fitting) of the female and male connectors 20, 30, the compression coil spring 39 is provided with the female connector 20. Since the female terminal 25 and the male terminal 35 of the male connector 30 have a repulsive force equal to or greater than the terminal detachment force, the lock projection 28 of the lock arm 27 of the female connector 20 engages with the locking recess of the male housing 31 of the male connector 30. The female connector 20 is pushed back to the state where the female terminal 25 and the male terminal 35 of the male connector 30 are not in contact with each other until it is locked to 38, and the conduction in the half-fitting is lost. That is, the repulsive force (restoring force) of the compression coil spring 30 urges the female connector 20 against the male connector 30 in the anti-fitting direction B to separate the female and male connectors 20 and 30 from each other.

  Further, as shown in FIG. 4, in the fully-fitted state, the lock projection 28 of the lock arm 27 of the female connector 20 is engaged with the engagement recess 38 of the male housing 31 of the male connector 30, so that the compression coil spring is accommodated. The repulsive force 39 is released and no load (load) is applied to the compression coil spring 39.

  Thus, since the compression coil spring 39 is not loaded after the two connectors 20 and 30 are fitted, the durability of the compression coil spring 39 is improved and the service life of the half-fitting prevention connector 10 can be extended. In addition, since the spring strength is greater than the terminal detachment force and the connector insertion force can be reduced, the handleability is improved, and the compression coil spring 39 can be reduced. Can be achieved.

  In addition, according to the said embodiment, although the compression coil spring was each attached to a pair of male terminal, you may attach a compression coil spring only to one male terminal. Also, the lock arms may be three or more instead of a pair, and the shape of the housing is not limited to a cylindrical shape, and may be a rectangular box shape or the like.

10 Half-mating prevention connector 20 Female connector (one connector)
25 Female terminal (one terminal)
27 Lock arm 28 Lock protrusion (lock part)
30 Male connector (the other connector)
35 Male terminal (the other terminal)
38 Locking recess (locking part)
39 Compression coil spring (elastic member)
B Counter mating direction

Claims (2)

One connector having one terminal and a lock arm;
The other connector having a locking portion and the other terminal where the lock portion of the lock arm is locked when fitted to the one connector,
An elastic member provided in the vicinity of the other terminal of the other connector, and biasing the one connector in a counter-fitting direction when the two connectors are half-fitted, and separating the two connectors;
At the time of half-fitting of the two connectors until the lock portion of the lock arm of the one connector is locked to the lock portion of the other connector, the elastic member is pressed and elastically deformed by the lock arm,
When the locking portions of the locking arm of the one connector are engaged with the engaging portions of the other connector, the pressing by the locking arm against the elastic member is released and the elastic member is A half-fitting prevention connector characterized by being restored to the state of. The half-fitting prevention connector according to claim 1,
A half-fitting prevention connector, wherein the elastic member is provided coaxially with the other terminal of the other connector, and a position of a locking portion of the other connector is a restoring position of the elastic member.

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