JP2903948B2 - connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector in which an electric wire is drawn in from a rear side of a cylindrical case, a housing provided with a terminal provided at the end of the electric wire is fastened, and the terminal faces forward. It is about.

[0002]

2. Description of the Related Art Conventionally, a connector as shown in FIG. 7 has been known. In this connector, the terminals 1 and 2 are housed in a housing 5, and the housing 5 is housed in a cylindrical inner case 4. When the housing 5 is fixed in the inner case 4, a contact surface 45 is formed so as to protrude inside the inner case 4.
The front peripheral edge of the housing 5 is in contact with the housing 5, and the forward movement is restricted. Further, an annular groove 71 is provided on the inner surface of the inner case 4, and a spring-like ring-shaped retainer ring 72 is fitted into the annular groove 71 to form the inner case 4.
It is anchored inside.

[0003]

When assembling the connector, first, the housing 5 is inserted into the inner case 4 and brought into contact with the contact surface 45, and then the ring of the retainer ring 72 is fixed using a jig. Means of holding the reduced diameter and inserting it into the annular groove 71 is employed. When disassembling the connector, the reverse operation is performed when the connector is assembled. For this reason, when performing the work of assembling and disassembling the connector, it is necessary not only to use a jig but also to hold the retainer ring 72 in a state where the diameter of the retaining ring 72 is reduced by the jig. There was a problem that. In particular, when the annular groove 71 is formed in the inner part of the long inner case 4 as shown in FIG. 7, the workability is remarkably deteriorated.

Therefore, an object of the present invention is to solve this problem and to provide a connector which can be easily assembled and disassembled.

[0005]

According to the first aspect of the present invention, an electric wire is drawn in from the rear side of a cylindrical outer case having a cylindrical inner case connected to a front portion, and provided at the end of the electric wire. In a connector in which the housing in which the terminal is arranged is fixed in the inner case and the terminal faces forward, a contact surface where the front part of the housing abuts on the inner surface of the inner case is formed inside the inner case. A push holder that is in contact with the rear part of the housing and is cylindrical and separate from the outer case is provided.A pressing part that presses the rear end of the push holder is formed integrally on the inner surface of the outer case, and on the outer surface of the inner case. It is characterized in that a sleeve is fitted, and an elastic member is provided between the sleeve and the inner case for absorbing an impact applied in the direction of striking the inner case. . According to a second aspect of the present invention, an electric wire is drawn in from a rear side of a cylindrical outer case in which a cylindrical inner case is connected to a front portion, and a housing provided with a terminal provided at the end of the electric wire is stopped in the inner case. In the connector in which the terminal is attached and the terminal faces forward, a contact surface with which the front part of the housing abuts is formed on the inner surface of the inner case, which is integrally provided on the inner surface of the outer case and which is provided on the rear surface of the housing. In addition to providing a push holder in contact with the inner case, a sleeve is fitted on the outer surface of the inner case, and an elastic member is provided between the sleeve and the inner case for absorbing an impact applied in a striking direction of the inner case. Has features.

[0006]

In order to assemble the connector according to the first aspect of the present invention, the housing in which the terminal is arranged and the push holder are sequentially inserted into the inner case from the rear side, and then the inner case and the outer case are connected. I do. Then, the push holder is pressed by the pressing portion provided integrally with the outer case, and the rear portion of the housing is pressed by the push holder, so that the front portion of the housing contacts the contact surface formed on the inner surface of the inner case. Touched. Thereby, the housing is fixed to the inner case. Further, when the connection between the inner case and the outer case is released, the fastening of the housing is also released, so that the connector can be easily disassembled.

[0007] In order to connect the connector to the mating connector, the mating connector and the mating surfaces are faced to each other, and the sleeve fitted to the outer surface of the inner case is grasped and pushed into the mating connector. At this time, if the positions of the mating surfaces are shifted and the inner case collides with the mating connector, the elastic member provided between the inner case and the sleeve is elastically deformed, so that the impact applied in the colliding direction can be absorbed. Therefore, a situation in which the connector is deformed can be avoided.

In order to assemble the connector according to the second aspect of the present invention, a housing provided with terminals is inserted into the inner case from the rear side, and then a push holder integrally provided with the outer case is inserted into the inner case. Connect the outer case to the inner case while inserting. Then
When the rear part of the housing is pressed by the push holder, the front part of the housing comes into contact with the contact surface formed on the inner surface of the inner case, and the housing is fixed to the inner case. Further, when the connection between the inner case and the outer case is released, the fastening of the housing is also released, so that the connector can be easily disassembled.

In order to connect the connector to the mating connector, the mating connector and the mating surfaces are opposed to each other, and the sleeve fitted to the outer surface of the inner case is grasped and pushed into the mating connector. At this time, if the positions of the mating surfaces are shifted and the inner case collides with the mating connector, the elastic member provided between the inner case and the sleeve is elastically deformed, so that the impact applied in the colliding direction can be absorbed. Therefore, a situation in which the connector is deformed can be avoided.

[0010]

As described above, according to the first or second aspect of the present invention, the connector can be easily assembled or disassembled by inserting and removing the bush holder into and from the inner case. Further, since the elastic member provided between the inner case and the sleeve is elastically deformed, it is possible to absorb the impact applied in the abutting direction, so that a situation in which the connector is deformed can be avoided.

[0011]

【Example】

<Embodiment 1> Hereinafter, Embodiment 1 in which the present invention is applied to a connector for charging an electric vehicle will be described in detail with reference to FIGS. The connector according to the first embodiment is a connector on a charging power supply side that is fitted to a vehicle-side connector provided for charging a battery mounted on an electric vehicle (not shown). Connecting the charging terminal 1 provided at the tip and the signal terminal 2 provided at the tip of the signal wire W2 simultaneously to respective female terminals provided in a vehicle-side connector (not shown). It is. This connector is a cable-shaped electric wire W that is bundled with both electric wires W1 and W2.
And a cylindrical inner case 4 fixed to a front portion of the outer case 3.
And a housing 5 for accommodating the terminals 1 and 2 fixed to the ends of the electric wires W1 and W2 in the inner case 4.

The housing 5 is formed in a cylindrical shape as a whole, and has a housing main body 5a provided with terminal receiving holes for accommodating respective terminals 1 and 2 for charging and signal, and a rear holder mounted on a rear surface of the housing main body 5a. 5
b, and the terminals 1 and 2 are fixed by the rear holder 5b. The housing body 5
A flange 5c having an outer diameter capable of being fitted into the inner case 4 is formed at a rear portion of the inner case 4. The rear holder 5b has the same diameter as the flange 5c and can be fitted into the inner case 4.

The outer case 3 is formed in a substantially cylindrical shape bent at an intermediate portion, a grip portion 31 is provided at a rear portion so as to be able to be gripped, and an inner case 4 is provided at a front portion.
The mounting hole 32 for mounting is formed. Also,
A contact cylinder 35 having a diameter smaller than that of the outer case 3 is provided in a concentric ring shape on the rear inner surface where the attachment hole 32 is provided via a connecting portion 35a. This contact cylinder 35
Is formed as a pressing portion 35b, which presses a rear end of a push holder 50 described later. A seal ring 37 is fitted in a fitting groove formed by the outer case 3 and the contact cylinder 35, and a rear end of the inner case 4 is fitted.

The inner case 4 has a cylindrical shape with both ends open, and a screw hole 41 is provided in the rear peripheral surface thereof. A mounting screw 42 is screwed between the inner case 4 and the mounting hole 32 so that the inner case 4 is in front of the outer case 3. Is fixed to the part. And inner case 4
The rear end of the outer case 3 is fixed to the front part of the outer case 3 by pressing a seal ring 37 made of an elastic material accommodated in the contact cylinder 35. A flange 4 is provided on the outer periphery of the middle portion of the inner case 4.
3 is formed to protrude in a ring shape, and a cylindrical sleeve 36 is fitted on the inner case 4. A concave groove 38 is provided on the inner periphery of the sleeve 36, and a flange 43 is fitted into the concave groove 38, and the inner ring 4 is attached to the inner case 4 by a spring ring 39 so as to provide cushioning in the front-rear direction. I have.

A ring-shaped projecting contact surface 45 is provided on the inner periphery of the intermediate portion of the inner case 4, and a flange 5c is provided.
, And the front end of the push holder 50 abuts against the rear surface of the rear holder 5b to press and fix the housing 5 to the abutting surface 45. As shown in FIG. 2, the push holder 50 has a pipe shape and is divided by a slit 51 provided in the axial direction so as to insert the electric wire W so as to be inserted. The rear end of the push holder 50 is in contact with the pressing portion 35 b of the contact cylinder 35 of the outer case 3. For this reason, the rear end is the pressing portion 3
The rear holder 5b is pressed by the front end and is fixed.

Next, the first embodiment having such a configuration will be described.
First, the terminals 1 and 2 fixed to the ends of the wires W1 and W2 are pulled in from the rear portion of the outer case 3 and drawn out to the front opening. Next, the terminals 1 and 2 are housed in the housing 5 and are blocked by the rear holder 5b. Then, the push holder 50 is fitted so as to hold the electric wire through the slit 51, and the electric wire W is inserted. Further, a sleeve 36 is fixed to the outer periphery of the inner case 4 in advance, and the rear side of the inner case 4 is inserted into the front portion of the outer case 3 and screwed with the mounting screws 42. As a result, the rear end face of the push holder 50 is pressed by the contact cylinder 35, and the front end face presses the rear face of the housing 5, so that the housing 5 is brought into contact with the contact face 45, and It is fixed.

On the other hand, at the time of disassembly, the push screw 50 and the housing 5 can be removed from the inner case 4 by removing the mounting screws 42 and removing the inner case 4 from the outer case 3. Work such as replacement of 1 and 2 can be easily performed.

In the first embodiment, the inner case 4
In this example, the mounting screws 42 are used to connect and fix the outer case 3 to the outer case 3. However, the mounting screws 42 are not necessarily used. As shown in FIG. Alternatively, a mounting projection 53 that fits into the mounting hole 52 may be provided and locked by this engagement. According to this engagement, attachment and disassembly can be performed with a single touch, and assembly and disassembly can be further facilitated.

<Embodiment 2> Embodiment 2 is a charging connector for an electric vehicle as in Embodiment 1, and will be described below with reference to FIGS. 4 and 5. Note that portions having the same configuration as in the first embodiment will be briefly described using the same reference numerals. The connector of the second embodiment is similar to the connector of the first embodiment,
An outer case 3 that bundles the two electric wires W1 and W2 and draws a single cable-like electric wire W from the rear, and a cylindrical inner case 4 that is fixed to the front of the outer case 3.
And a housing 5 that accommodates the terminals 1 and 2 in the inner case 4. Housing 5
Is blocked by a housing body 5a and a rear holder 5b, and the terminals 1 and 2 are accommodated and fixed.

The outer case 3 is formed in a substantially cylindrical shape bent at an intermediate portion, and a grip portion 31 is provided at a rear portion so as to be grippable.
The mounting hole 32 for mounting is formed. Also,
A push holder 65 having a smaller diameter than the outer case 3 is provided on a rear inner peripheral surface of the outer case 3 in a concentric ring shape via a connecting portion 65a. The push holder 65 is formed so as to protrude further forward than the front opening of the outer case 3, and the distal end thereof is a pressing portion 65 b, which comes into contact with a rear surface of a rear holder 5 b described later to press and fix the housing 5 to the contact surface 45. ing. The inner case 4 is fitted in a ring-shaped fitting groove defined by the outer case 3 and the push holder 65, and a seal ring 37 is fitted therein. The inner case 4 has the same configuration as that of the first embodiment, and the ring-shaped projecting contact surface 45 contacts the peripheral edge of the flange 5c to prevent the housing 5 from moving forward.

When assembling the connector of the second embodiment having such a configuration, first, the terminals 1 and 2 fixed to the ends of the electric wires W1 and W2 are pulled in from the rear portion of the outer case 3 and To the opening. Next, the terminals 1 and 2 are housed in the housing 5 and are blocked by the rear holder 5b. Then, the inner case 4 to which the sleeve 36 is fixed in advance is fitted from the front of the outer case 3 and screwed to the mounting screw 42. As a result, the rear end of the rear holder 5b is pressed by the pressing portion 65b of the push holder 65, and the housing 5 comes into contact with the contact surface 45 and is fixed in the inner case 4. Also, when disassembling,
By removing the mounting screws 42, the inner case 4 can be removed from the outer case 3, and the housing 5 can be removed from the inner case 4.
2 can be easily performed.

In the second embodiment, the inner case 4
The mounting screw 42 is used to mount the outer case 3 to the outer case 3. The outer case 3 is provided with a mounting hole 52 as shown in FIG. 53 is provided, and the mounting and disassembly can be performed more easily as a configuration for mounting by this engagement.

In the first and second embodiments, an example of a connector for charging an electric vehicle is shown. However, a connector for other uses, for example, a mounting flange is provided on an outer case to provide a frame for an apparatus. The present invention is also applicable to a mounting connector mounted in a mounting hole.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a first embodiment.

FIG. 2 is an exploded perspective view of the first embodiment.

FIG. 3 is a longitudinal sectional view showing another example of the first embodiment.

FIG. 4 is an exploded perspective view of the second embodiment.

FIG. 5 is a longitudinal sectional view of the second embodiment.

FIG. 6 is a longitudinal sectional view showing another example of the second embodiment.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Charging terminal 2 ... Signal terminal 3 ... Outer case 4 ... Inner case 5 ... Housing 35b ... Pressing part 45 ... Contact surface 50 ... Push holder

Claims (2)

(57) [Claims] An electric wire is drawn in from a rear side of a cylindrical outer case in which a cylindrical inner case is connected to a front portion, and a housing provided with a terminal provided at the end of the electric wire is fixed in the inner case. In the connector with the terminal facing forward, a contact surface where a front portion of the housing abuts on an inner surface of the inner case, and a cylindrical shape that abuts a rear portion of the housing inside the inner case. A push holder separate from the outer case is provided, and a pressing portion for pressing the rear end of the push holder is integrally formed on the inner surface of the outer case, and a sleeve is fitted on the outer surface of the inner case, and A connector comprising an elastic member provided between a sleeve and the inner case for absorbing an impact applied in a direction in which the inner case abuts. 2. An electric wire is drawn in from a rear side of a cylindrical outer case having a cylindrical inner case connected to a front portion thereof, and a housing provided with a terminal provided at the end of the electric wire is fixed in the inner case. A connector having the terminal facing forward, a contact surface with which a front portion of a housing abuts on an inner surface of the inner case, and a contact surface provided integrally with an inner surface of the outer case; And an elastic member for absorbing a shock applied between the sleeve and the inner case in a direction in which the inner case abuts, between the sleeve and the inner case. A connector comprising: