CN102468577A - Embedding detecting connector - Google Patents

Abstract

The purpose of the present invention is to provide a mating detection type connector, which is composed of a plug and a socket, has high connection detection accuracy, and can effectively achieve miniaturization of the plug and socket. A connector comprising a switch unit for detecting the mating state of a socket and a plug, wherein any one of the socket shell of the socket and the plug shell of the plug has an arm-shaped lock protruding toward the fitting direction. The aforementioned locking portion is elastically deformable toward the inner and outer directions perpendicular to the fitting direction, and has locking claws protruding toward the outer direction, and the other housing has an insertion hole for the aforementioned locking claws and a locked portion inside it, and is inserted into the The locking pawl of the aforementioned insertion hole is locked to the aforementioned locked portion through elastic recovery toward the outside, and the aforementioned switch portion is located inside the aforementioned other housing, and is composed of a fixed piece and an elastic movable piece. The aforementioned locking claw When the movable piece is locked to the locked portion, the movable piece is pushed outward to switch on/off of the switch.

Description

Mating detection type connector

technical field

The present invention relates to a connector which is electrically connected by fitting a plug and a socket, and which has a switch function for detecting the fitting state.

Background technique

In a connector that is electrically connected by fitting a plug and a socket, if the terminals are fitted and connected to each other with a voltage applied to the plug terminal or socket terminal, leakage current will occur during the connection, and insulation will be generated at the contact part. In order to prevent this problem, the conventional connector has a switch part for detecting the mating state between the terminals.

For example, FIGS. 8 and 9 show structural examples of conventional connectors.

In the structure of FIG. 8 , when the socket housing 111 of the socket 110 is fitted and connected with the plug housing 121 of the plug 120, a switch part composed of a fixed piece 131 and a movable piece 132 is formed in the plug housing 121, and the The side wall of the insulating wall 111 a containing the socket terminal 115 pushes the movable piece 132 outward, thereby releasing the contact contact between the movable piece 132 and the fixed piece 131 .

Its enlarged view is shown in Fig. 9(a).

The socket terminal 115 and the plug terminal 125 are connected to each other, because the front end of the insulating wall 111a abuts against the movable piece 132 during the fitting movement, so the connection dimension _L1 is relatively short, resulting in the incomplete fitting. The piece 131 is separated from the contact point 132a of the movable piece 132 .

In addition, as shown in FIG. 9(b), when the movable piece 132 is pushed downward by the front end of the insulating wall 111a, the switching of the switch will occur during the connection and movement of the plug terminal 125 and the socket terminal 115. The connection dimension L ₂ is sufficiently secured, and since the switch is switched during the movement of the terminals, there is a problem that the switch is switched before some of the terminals are connected when the receptacle 110 is fitted obliquely toward the plug 120 .

Patent Document 1 discloses a connector having a structure in which a movable contact piece is disconnected from a fixed contact piece by the return displacement of the locking member when the locking member is engaged with the locked member.

However, in the switch structure of the connector disclosed in the above-mentioned publication, because the pressed portion of the movable contact piece protrudes toward the outside of the housing and becomes exposed to the outside, there is a possibility of false contact when the connector is connected. On the other hand, the switch is turned on before the connectors are fitted.

In addition, there is a possibility that the movable piece exposed to the outside is deformed and the elastic restoring force is lost.

Patent Document 1: Japanese Patent Laid-Open No. 2007-258012

Contents of the invention

(Problem to be solved by the present invention)

The purpose of the present invention is to provide a mating detection type connector, which is composed of a plug and a socket, has high connection detection accuracy, and can effectively achieve miniaturization of the plug and socket.

(means to solve the problem)

The mating detection type connector of the present invention is a connector having a switch portion capable of detecting the mating state of a socket and a plug, and is characterized in that any of the socket housing of the socket and the plug housing of the plug is One housing has an arm-shaped locking portion protruding toward the fitting direction, the locking portion is elastically deformable toward the inner and outer directions perpendicular to the fitting direction, and has locking claws protruding toward the outer direction, and the other outer housing is inside it. There is an insertion hole and a locked portion of the aforementioned locking claw, the locking claw inserted into the aforementioned insertion hole is locked to the aforementioned locked portion by being elastically restored toward the outside, the aforementioned switch portion is located on the inside of the aforementioned other housing, and Consists of a fixed piece and an elastic movable piece. When the locking claw is locked on the locked portion, the movable piece is pushed outward to perform ON/OFF of the switch. switch.

Here, the fact that the switch unit is located inside the case means that the contact portion of the switch unit is not exposed to the outside of the case.

In the present invention, the lock claw may be provided with a restoration assisting member made of an elastic material that assists elastic restoration in the outward direction.

In addition, switching of ON/OFF of the switch may be allowed only when the socket terminal of the socket is fitted and connected to the plug terminal of the plug.

In the present invention, the method of switching the switch from ON/OFF by pushing the movable piece toward the outside includes the following method: before the plug is fitted into the socket, the movable piece It is in the state of elastic contact with the fixed piece. Once the plug is fitted with the socket, the locking claw will push the movable piece toward the outside when it is elastically restored to the outside to separate the contacts. In addition, the following methods are also included: with In contrast to the above method, before the fitting, the fixed piece is separated from the movable piece. In this state, when the movable piece is pushed outward by the locking claw, the movable piece contacts the fixed piece, thereby switching conduction (ON) / Disconnect (OFF).

[Effect of the invention]

In the connector of the present invention, since either one of the plug housing and the receptacle housing has an arm-shaped locking portion protruding toward the fitting direction, the other housing has an insertion hole for inserting the locking claw of the locking portion. On the inner side of the other housing, it is also possible to provide a switch part for detecting the mating state of the plug and the socket on the inner side of the other housing, so that it is possible to prevent accidental contact with the switch part as in conventional patent document 1. , When the ON/OFF state is switched before the plug is fitted into the receptacle.

Because the locking claw of the arm-shaped locking part provided in one housing is locked with the locked part provided in the other housing, the conduction (ON)/disconnection (OFF) of the switch part is switched, Therefore, at the same time as the mating connection between the plug terminal and the socket terminal is completed, or a little later than that, the movable piece is pushed outward to separate the contact from the fixed piece, or the contact is brought into contact with the fixed piece. Switching of the switch section causes a voltage to be applied between the plug terminal and the receptacle terminal, whereby the occurrence of electric leakage can be reliably prevented.

When disengaging the mating of the plug and the socket, the locking part is pushed inward to disengage the locking claw from the locked part, because if the locking claw moves inward, the movable piece of the switch part must also face inward. Since it moves, the plug and socket cannot be disengaged when the switch part is not reliably switched.

By providing the return assisting member on the locking claw, the fitting between the plug and the socket can be strengthened, and the ON/OFF switching of the switch portion can be made more reliable when the plug is inserted into the socket.

Description of drawings

1 shows a structural example of the connector of the present invention, (a) shows the state before the socket and the plug are mated, (b) shows the state during the mating, and (c) shows the state where the switch part is switched after the mating is completed.

Fig. 2 shows enlarged views of the switch part, (a) shows the middle of the fitting of the plug and the socket, and (b) shows the state of switching the switch part after the fitting is completed.

Fig. 3 shows the operation of releasing the fitting of the plug and the socket by pushing the locking portion provided in the socket inward. (a) shows a state where the unlocking parts on both sides are pushed inward, and (b) shows an enlarged view of the switch part at that time.

Fig. 4 shows a component configuration example of the switch unit. (a) shows the positional relationship between the fixed piece and the movable piece, and (b) shows the state where the fixed piece is separated from the movable piece.

Fig. 5 shows the state where the lock claw is inserted into the lock hole and the switch part is switched. (a) shows before fitting of a plug and a socket, and (b) shows after fitting.

Fig. 6 shows a perspective view of the mating surfaces of the plug and the socket. (a) shows the socket and (b) shows the plug.

Fig. 7 shows a state in which the fixed piece and the movable piece are installed from the back side of the plug (the side opposite to the mating direction). (a) shows before the switch unit is installed in the socket, (b) shows the state after the fixed piece is assembled, and (c) shows the state after the movable piece is assembled.

FIG. 8 shows a structural example of a conventional connector.

FIG. 9 shows a structural example of a switch portion of a conventional connector.

Detailed ways

Hereinafter, a structural example of the connector of the present invention will be described with reference to the drawings.

Although this embodiment is an example in which the locking claw is provided on the socket, and the insertion hole of the locking claw and the switch part are provided on the plug, the structures of the socket and the plug can also be reversed, and are not limited to this embodiment.

As shown in FIG. 1 , the socket 10 has a cylindrical insulating wall 11 a inside an insulating resin socket case 11 and accommodates a socket terminal 15 connected to the tip of a cable 14 inside.

As shown in the external view of FIG. 6( a ), the socket housing 11 has arm-shaped locking portions 12 and 13 on both sides of the side portion.

The arm-shaped locking parts 12 and 13 protrude from the side of the socket housing 11 toward the fitting direction of the plug 20 , and have locking claws 12 a and 13 a protruding outward near their front ends.

The locking parts 12 and 13 are elastically deformed in the inner and outer directions perpendicular to the fitting direction using the root parts 12d and 13d of the locking parts 12 and 13 and the socket housing 11 as fulcrums.

There are lock release portions 12b, 13b between the root portions 12d, 13d and the lock claws 12a, 13a, and when the lock release portions are pushed inward, the lock is released.

The front ends of the locking claws 12a, 13a in the fitting direction form slopes 12c, 13c inclined inward toward the fitting direction to guide the insertion direction when the locking claws 12a, 13a are inserted into the insertion holes 22, 23 of the plug 20 described later.

As shown in the external view of FIG. 6( b ), the plug 20 has a plug terminal 25 and insertion holes 22 , 23 for locking claws 12 a , 13 a inside a plug case 21 made of insulating resin.

The insertion holes 22, 23 have sliding wall portions 22a, 23a that are located inwardly from the laterally outward protruding front ends of the lock claws 12a, 13a in the released state of the socket 10 before fitting, When the lock claws 12a, 13a are inserted into the insertion holes 22, 23, as shown in FIG.

Among the insertion holes 22 and 23 on both sides, in at least one of the insertion holes 22, a locked portion 22b that cuts off the sliding wall portion 22a toward the rear side is formed, and further on the rear side in the fitting direction and in the plug housing. The inner side of 21 forms a switch accommodating portion 24 .

The switch housing part 24 has a switch part 30 constituted by a conductive fixed piece 31 and a movable piece 32 .

When assembling the plug 20 , the four round pin-shaped plug terminals 25 are inserted into holes for accommodating the plug terminals 25 from the back surface of the plug case 12 with cables (not shown) assembled.

The structure of the components of the switch unit 30 is shown in FIG. 4 , and the assembly procedure of the switch unit 30 to the plug housing 21 is shown in FIG. 7 .

The fixed piece 31 has a contact portion 31a. In this embodiment, the base portions 31b, 31c are bent in an L-shape, and a locking portion 31d having an arrow-shaped claw portion is formed on the base portion 31c, as shown in FIG. 7(b) As shown, it can be inserted as long as it is inserted into the L-shaped receiving portion 26 provided on the back side of the plug housing 21 .

The movable piece 32 forms a contact portion 32a bent in a U-shape so as to wrap around the fixed piece 31 from the back side, and has an elastically deformable pressed portion 32b at its front end.

With such a configuration, good elastic properties can be obtained while suppressing the size of the movable piece 32 in the fitting direction.

The movable piece 32 also has a notch 32d, and as shown in FIG.

If the socket 10 and the plug 20 are fitted as shown in FIG. , 23b, as shown in FIG. 1(c), the locking claws 12a, 13a elastically return to the outside in a manner of being locked to the locked portions 22b, 23b.

An enlarged view of this state is shown in FIG. 2 , and the positional relationship between the lock claw and the pushed portion 32 b of the movable piece 32 is shown in FIG. 5 .

Since the outer front end portion of the lock claw 12a pushes the pushed portion 32b of the movable piece 32 outward, it elastically deforms to separate the contact points 32a, 31a.

Thus, the circuit can be set so that the switch unit 30 can be switched from conduction (ON) to disconnection (OFF) while sufficiently ensuring the connection timing between the socket terminal 15 and the plug terminal 25 (lengthening the connection dimension L). , it is detected and the socket terminal 15 is electrically connected to the plug terminal 25 .

This embodiment is an example in which the restoration assisting member 16 bent in a U-shape is attached between the arm-shaped locking portions 12, 13 and the insulating wall 11a.

The arm-shaped locking portion is molded from resin because insulation is required.

Here, in order to reinforce the elastic force of the resin, the leaf spring is bent in a U shape, one side piece 16a is fixed to the side surface outside the insulating wall 11a, and the other side piece 16b is brought into contact with the inner side 12e of the locking claw 12a. .

Contrary to the above, when the mating connection between the socket 20 and the plug 10 is released, as shown in FIG. Elastically deformed, away from the locked portions 22b, 23b.

At the same time, since the pressed portion 32b of the movable piece 32 is elastically restored inwardly, the contact portion 32a comes into contact with the contact portion 31a of the fixed piece 31 .

Therefore, the outlet 10 cannot be pulled out from the plug 20 unless the switch of the switch unit 30 is switched.

Claims (3)

1. chimeric detection type connector possesses the switch portion of the chimerism of test socket and plug, it is characterized in that,

Among the jack housing of said socket and the plug body of said plug, wherein arbitrary side's shell has the sticking department towards the outstanding arm shape of chimeric direction,

The inward-outward direction elastically deformable of said sticking department court and chimeric direction quadrature, and have towards the outstanding lock pawl of lateral direction,

The opposing party's shell side within it has the patchhole of said lock pawl and by fastener, the lock pawl that is inserted into said patchhole is said by fastener through being limited to towards the lateral direction elastic recovery,

Said switch portion is positioned at the inboard of said the opposing party's shell, and is made up of stator and rubber-like operation strip, and said lock pawl saidly pushes operation strip during by fastener being limited to towards lateral direction, carry out the switching of the conducting/disconnection of switch.

2. chimeric detection type connector as claimed in claim 1 is characterized in that, said lock pawl possesses the recovery auxiliary part that is made up of the elasticity material that restores towards the lateral direction assistant spring.

3. according to claim 1 or claim 2 chimeric detection type connector is characterized in that, only under the female terminal of said socket and the chimeric state that is connected of the plug terminal of said plug, just allows the switching of the conducting/disconnection of said switch.

Images