JPH08298169A - Jack - Google Patents

Abstract

PURPOSE: To provide a jack improved sp as to prevent interruption of electric connection between a plug and the concerned jack. CONSTITUTION: In an electric connection device provided with a jack, a hole 16c of sinking a shoulder part of an insulating collar 5 in a point end of a plug is formed in an extending part 16b in a position adjacent to a protruded part 16a of an electric connection piece 16 of this jack. Even when the plug is placed under a condition where it is wrenched in a vertical direction, the protruded part 16a of the electric connection piece 16 is prevented from separating from a cylindrical electrode 4 of this plug, to maintain a contact condition between these protruded part 16a and electrode 4.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to fixed contactors or jacks used to connect electrical wiring.

[0002]

2. Description of the Related Art The structure of a conventional electrical wiring connecting device will be described with reference to FIGS. FIG. 10 shows a known plug which is one component of the connecting device, and FIG. 11 is a vertical sectional view of a known jack which is the other component of the connecting device.

In FIG. 10, 1 is a mold body of a plug, 2 is a bellows for protecting a cord 3 extending from the mold body 1, 1a is an insulating cylinder to be inserted into a jack described later, 4
Is a cylindrical electrode fitted to the outer peripheral surface of the insulating cylinder 1a, 5 is an insulating collar integrally formed at the tip of the insulating cylinder 1a, 6
Is a rod-shaped electrode arranged at the center of the insulating cylinder 1a.

In FIG. 11, 7 is a jack body made of an insulating material, 8 is a plug insertion hole formed in the jack body 7, 9 is a cylindrical insulator formed in the hole 8, and 10 is the cylindrical insulation. A fork-shaped electrode that is arranged in the center hole 9b of the body 9 and engages with the tip of the rod-shaped electrode 6, 15 is a fixed electrode that is arranged behind and outside the cylindrical insulator 9, and 11 is the plug. When the electrode is not inserted, the electrode 15
Is an electric contact piece that is moved to the outside by the insulating cylinder 1a of the plug when the plug is inserted and the contact state with the electrode 15 is released. The electric contact piece 11 is
When the plug is inserted into the jack, it contacts the insulating cylinder 1a of the plug and is moved downward in FIG. 11, and when the plug is not inserted into the jack, as shown in FIG. An extension 13 which contacts the fixed electrode 15 and is separated from the fixed electrode 15 when the plug is inserted into the jack.

The state in which the plug is inserted into the jack and the state in which the plug is inserted will be described below with reference to FIG.

When the plug is inserted into the jack, the insulating collar 5 of the plug engages with the protrusion 12 of the electrical contact piece 11 and the insulating collar 5 pushes the protrusion 12 downward from the state of FIG. Therefore, the extending portion 13 of the electrical contact piece 11 has the fixed electrode 1
Pulled away from 5. Then, when the plug is further inserted into the jack, the insulating collar 5 is attached to the protrusion 12 of the electrical contact piece 11.
The projection 12 is disengaged from the insulating collar 5, and the projection 12 contacts the cylindrical electrode 4 of the plug as shown in FIG. 12 to electrically connect the plug and the jack. The connection is complete. When the state shown in FIG. 12 is reached, the insulating collar 5 passes over the protrusion 12 and the extension 1
Since it is located on the side of 3, the insulating collar 5 serves as a stopper even when the plug is pulled out from the jack, so that the plug cannot be pulled out easily.

[0007]

The above-mentioned known electrical connecting device has the following drawbacks. That is, in a state where the plug is completely inserted into the jack as shown in FIG. 12, the plug is in a direction orthogonal to its own axis by some external force as shown in FIG.
3), the insulating collar 5 having an outer diameter larger than that of the cylindrical electrode 4 is formed in the connecting portion between the protruding portion 12 and the extending portion 13. The protrusion 12 of the electric contact piece 11 separates from the cylindrical electrode 4 of the plug because it engages and pushes down the electric contact piece 11, and as a result, the electrical connection between the plug and the jack is broken. You will be drunk. Therefore, a situation in which an unillustrated device electrically connected through the above-described conventional electrical connection device suddenly falls into a power supply stop state is likely to occur.

[0008]

OBJECTS OF THE INVENTION It is an object of the present invention to provide an improved jack which eliminates the drawbacks of the prior art devices mentioned above. The object of the present invention will be described below for each claim.

An object of the present invention is to provide an "insulating cylindrical body, a cylindrical electrode fitted to an outer peripheral surface of the insulating cylindrical body, and the cylindrical electrode integrally formed at a tip of the insulating cylindrical body. An outer diameter larger than the outer diameter of the rod, a rod-shaped electrode arranged in the center of the insulating cylinder and parallel to the insulating cylinder, an inner peripheral surface of the insulating cylinder and an outer periphery of the rod-shaped electrode. A cylindrical space formed between the cylindrical surface and a surface, a cylindrical insulator having a rod-shaped electrode insertion hole into which the rod-shaped electrode is inserted, and a cylindrical insulator inserted into the cylindrical space, and the rod-shaped electrode A center electrode that is arranged in the insertion hole and engages with the tip of the rod-shaped electrode, a fixed electrode that is arranged on the outer rear side of the cylindrical insulator, and a plug that contacts the fixed electrode when the plug is not inserted. When the is inserted, the insulating cylindrical body engages with the fixed electrode. And an electrical contact having a protrusion that is released from the cylindrical insulator and is moved in a direction orthogonal to the axis of the cylindrical insulator and that contacts the cylindrical electrode when the plug is inserted. In the jack used for the electrical connection device composed by
A jack characterized in that the extension portion of the electrical contact piece is formed with a relief portion at a position adjacent to the protrusion for avoiding engagement of the plug with the insulating collar " It is to be.

An object of the invention of claim 2 is to provide "a jack having the structure of claim 1 characterized in that the escape portion is a hole".

The object of the invention of claim 3 is "In the jack having the structure of claim 2, the hole edge of the hole near the projection is formed as a chamfered inclined surface or a rounded curved surface. It is to provide "Jack" characterized by having.

An object of the invention of claim 4 is "In the jack having the structure of claim 1, the escape portion is a recess,
The edge of the recess is provided with a smooth curved surface connected to the surrounding surface.

An object of the invention of claim 5 is, "In the jack having the structure of claim 1, as a relief portion, a part of the electric contact piece is pushed outward from a surface of the plug that contacts the insulating collar. And a tongue formed therein, the tongue being an inclined guide for smoothly guiding the insulating collar from the hole toward the protrusion when the plug is pulled out. It is to provide Jack.

[0014]

In order to solve the above-mentioned problems, the invention of claim 1 is directed to "an insulating cylinder, a cylindrical electrode fitted to the outer peripheral surface of the insulating cylinder, and the insulating cylinder. An insulating collar integrally formed at the tip of the body and having an outer diameter larger than the outer diameter of the cylindrical electrode; a rod-shaped electrode arranged at the center of the insulating cylinder and parallel to the insulating cylinder; A plug having a cylindrical space formed between the inner peripheral surface of the insulating cylindrical body and the outer peripheral surface of the rod-shaped electrode, and a rod-shaped electrode insertion hole into which the rod-shaped electrode is inserted, and the cylindrical shape. A cylindrical insulator inserted into the space, a center electrode arranged in the rod-shaped electrode insertion hole and engaging with the tip of the rod-shaped electrode, a fixed electrode arranged at a rear position outside the cylindrical insulator, When the plug is not inserted, it contacts the fixed electrode and when the plug is inserted The insulating cylinder has an extending portion that is disengaged from the fixed electrode and is moved in a direction orthogonal to the axis of the cylindrical insulator, and contacts the cylindrical electrode when the plug is inserted. In a jack used in an electrical connecting device configured by a jack having an electric contact piece having a protrusion, the extension portion of the electric contact piece is provided at a position adjacent to the protrusion. And a recess formed to avoid engagement of the plug with the insulating collar.

According to the jack of the present invention, the electrical connection between the plug and the jack is disconnected even when the plug is twisted in the direction orthogonal to the axis while the plug is inserted in the jack. There is no fear of dripping.

In order to solve the above-mentioned problems, the invention of claim 2 provides "a jack having the structure of claim 1, wherein the escape portion is a hole."

According to the present invention, the insulating collar of the plug is inserted into the hole of the electrical contact piece even when the plug is twisted in the direction orthogonal to the axis while the plug is inserted in the jack. Since the protrusion is kept in contact with the cylindrical electrode to maintain contact with the cylindrical electrode, there is no risk of disconnection of the electrical connection between the plug and the jack.

In order to solve the above-mentioned problems, the invention of claim 3 is that "in the jack having the structure of claim 2, the hole edge of the hole near the projection is chamfered or rounded. Jack, which is characterized as a curved surface.

According to the present invention, when the plug is to be removed while the insulating collar of the plug is in the hole of the electrical contact piece, the insulating collar can be easily pulled out of the hole. .

In order to solve the above-mentioned problems, the invention of claim 4 provides, "In the jack having the structure of claim 1, the relief portion is a recess, and the edge of the recess is connected to the peripheral surface with a smooth curved surface. Jack, which is characterized by being provided.

According to the present invention, when the plug is to be removed while the insulating collar of the plug is in the recess of the electrical contact piece, the insulating collar can be easily removed from the recess. .

In order to solve the above-mentioned problems, the invention of claim 5 provides, "In the jack having the structure of claim 1, a part of the electrical contact piece serving as the relief portion is in contact with the insulating collar of the plug. Is provided with a tongue piece and a hole which are formed by punching out from the outside, and the tongue piece serves as an inclined guide for smoothly guiding the insulating collar from the hole toward the protrusion when the plug is pulled out. Jack that is characterized by
I will provide a.

According to the present invention, when the plug is to be removed while the insulating collar of the plug is in the hole of the electrical contact piece, the insulating collar can be easily pulled out of the hole. You can

[0024]

Embodiments of the present invention will be described below with reference to FIGS. In addition, in FIGS.
Since the components indicated by the same reference numerals as those of the above are the same as the components of the conventional electrical connection device, these same components will be briefly described.

<First Embodiment> A first embodiment of the present invention will be described with reference to FIGS.

In FIGS. 1 to 3, 1 is a mold body of a plug, 1a is an insulating cylinder to be inserted into a jack described later,
4 is a cylindrical electrode fitted to the outer peripheral surface of the insulating cylinder 1a, 5
Is an insulating collar integrally formed at the tip of the insulating cylinder 1a,
6 is a rod-shaped electrode arranged in the center of the insulating cylinder 1a, 7 is a jack body made of an insulating material, 8 is a plug insertion hole formed in the jack body 7, and 9 is a cylindrical insulation formed in the hole 8. The body 10 is arranged in the center hole 9b of the cylindrical insulator 9 and is a fork-shaped electrode that engages with the tip of the rod-shaped electrode 6, and 15 is arranged at a position outside and behind the cylindrical insulator 9. The fixed electrode 16 contacts the electrode 15 when the plug is not inserted, and is moved to the outside by the insulating cylinder 1a of the plug when the plug is inserted to release the contact state with the electrode 15. It is an electrical contact piece.

The electrical contact piece 16 is provided on the protrusion 16a that is moved downward by the insulating collar 5 of the plug when the plug is inserted into the jack and on the fixed electrode 15 when the plug is not inserted into the jack. An extension portion 16b that comes into contact with the plug and is separated from the fixed electrode 15 when the plug is inserted into the jack. The extension portion 16b adjacent to the protrusion 16a is provided with the insulating collar 5. A hole 16c for penetrating a part thereof is provided through.

Therefore, in the electrical connecting device using the jack of this embodiment, as shown in FIG. 1, when the plug is inserted into the jack and the plug is twisted upward, the insulating collar 5 is the hole 16
c, and as a result, the protrusion 16a of the electric contact piece 16
Maintains a contact state with the cylindrical electrode 4, so there is no risk of electrical disconnection between the plug and the jack.

<Second Embodiment> A second embodiment of the present invention will be described with reference to FIGS. In addition, in this embodiment, the same constituent members as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description of the constituent members will be omitted.

In the jack of this embodiment, the first embodiment is used.
An electric contact piece 17 having a part of the configuration different from that of the electric contact piece 16 is provided. The electric contact piece 17 has almost the same shape as the electric contact piece 16 of the first embodiment, and the projection 17 a having the same function as the projection 16 a of the electric contact piece 16 of the first embodiment and the electric contact piece 16 are provided.
An extension 17b having the same function as the extension 16b of the plug, and a recess 17c for avoiding engagement with the insulating collar 5 of the plug is provided at a position adjacent to the protrusion 17a. Has been formed.

Therefore, also in this embodiment, when the plug is twisted as shown in FIG. 5, the shoulder portion of the insulating collar 5 of the plug falls into the recess 17c, so that the electrical contact piece 1 is formed.
The contact between the protrusion 17a of No. 7 and the cylindrical electrode 4 of the plug is not broken. Further, since the outer peripheral edge of the recess 17c is smoothly connected to the peripheral surface, the plug can be pulled out without receiving a large resistance when it is pulled out from the jack.

<Third Embodiment> A third embodiment of the present invention will be described with reference to FIGS. Also in this embodiment, Embodiment 1
The same constituent members as those described in the second embodiment are denoted by the same reference numerals as those in the first and second embodiments, and the description of the constituent members will be omitted.

The electric contact piece 18 used in the jack of this embodiment also has the same shape as the electric contact pieces 16 and 17 of the first and second embodiments. That is, the electric contact piece 18 has a protrusion 18a having the same function as the protrusions 16a and 17a of the electric contact pieces 16 and 17, and an extension portion 18b having the same function as the extension portions 16b and 17b of the electric contact pieces 16 and 17. However, it is different from the above embodiment in that a tongue piece 18c is formed at a position adjacent to the protrusion 18a. The tongue piece 18c is formed by punching out the extending portion 18b.
Is connected to the main body of the electric contact piece 18 at the end near the protrusion 18a and protrudes below the extension 18b. The tongue piece 18c is attached to the extending portion 18b where the tongue piece 18c is punched out.
Corresponding to the hole 18d is formed, and the hole 18d serves as an escape portion for allowing the shoulder portion of the insulating collar 5 to sink.

In the jack of this embodiment, the same effect as the above embodiment can be obtained. That is, when the plug is twisted as shown in FIG. 8, the shoulder of the insulating collar 5 of the plug falls into the hole 18d, so that the projection 18a of the electrical contact piece 18 and the cylindrical electrode 4 of the plug are separated. The contact is not broken. Further, since the inclined surface formed by the tongue piece 18c is provided, the insulating collar 5 can be easily pulled out from the hole portion 18d using the tongue piece 18c as a guide, and therefore the plug can be easily pulled out from the jack. be able to.

[0035]

According to the invention of claim 1, when the plug is inserted in the jack and the plug is twisted in a direction orthogonal to the axis, the electrical connection between the plug and the jack is made. There is no risk of disconnection.

According to the second aspect of the present invention, even when the plug is twisted in the direction orthogonal to the axis while the plug is inserted in the jack, the insulating collar of the plug has the electric contact piece. Since the protrusion and the cylindrical electrode are kept in contact with each other by entering the hole, there is no fear that the electrical connection between the plug and the jack is broken.

According to the invention of claim 3, in addition to the effect of the invention of claim 1, when the insulating collar of the plug is inserted into the hole of the electrical contact piece, the insulation is obtained when the plug is pulled out. The collar can be easily pulled out from the hole.

According to the invention of claim 4, in addition to the effect of the invention of claim 1, when the insulating collar of the plug is inserted into the recess of the electrical contact piece, the insulation is obtained when the plug is pulled out. The collar can be easily pulled out from the recess.

According to the invention of claim 5, in addition to the effect of the invention of claim 1, when the plug is to be pulled out when the insulating collar of the plug is in the hole of the electrical contact piece, The insulating collar can be easily pulled out from the hole.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a plug is twisted in a jack in an electric connecting device having a jack according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which a plug is inserted into the jack and the plug is not twisted in the electrical connecting device including the jack according to the first embodiment of the present invention.

FIG. 3 shows a relative positional relationship between a cylindrical electrode of the plug and an electrical contact piece of the jack in a state where the plug is inserted into the jack in the electrical connecting device having the jack of the first embodiment of the present invention. The perspective view shown.

FIG. 4 is a cross-sectional view showing a state in which a plug is inserted into the jack and the plug is not twisted in the electrical connecting device including the jack of the second embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a state in which the plug is twisted in the jack in the electrical connecting device having the jack of the second embodiment of the present invention.

FIG. 6 shows a relative positional relationship between a cylindrical electrode of the plug and an electrical contact piece of the jack in a state where the plug is inserted into the jack in the electrical connecting device having the jack of the second embodiment of the present invention. The perspective view shown.

FIG. 7 is a cross-sectional view showing a state in which a plug is inserted into the jack and the plug is not twisted in the electrical connecting device including the jack of the third embodiment of the present invention.

FIG. 8 is a sectional view showing a state in which the plug is twisted in the jack in the electrical connecting device including the jack of the third embodiment of the present invention.

FIG. 9 shows a relative positional relationship between a cylindrical electrode of the plug and an electrical contact piece of the jack in a state where the plug is inserted in the jack in the electrical connecting device having the jack of the third embodiment of the present invention. The perspective view shown.

FIG. 10 is a partially cutaway side view of a conventional plug.

FIG. 11 is a vertical sectional view of a conventional jack.

FIG. 12 Conventional plug (FIG. 10) and jack (FIG. 1)
FIG. 3 is a cross-sectional view showing a state in which the plug is inserted into the jack and the plug is not twisted in the electrical connecting device including 1).

Figure 13 Conventional plug (Figure 10) and jack (Figure 1)
Sectional drawing which shows the state in which the said plug was inserted in this jack and the said plug was twisted in the electrical connection apparatus provided with 1).

FIG. 14 is a perspective view showing a relative positional relationship between a cylindrical electrode of the plug and an electrical contact piece of the jack in a state in which the plug is inserted into the jack in the conventional electrical connecting device including the jack.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Plug main body 1a ... Insulating cylinder 2 ... Bellows 3 ... Cord 4 ... Cylindrical electrode 5 ... Insulation collar 6 ... Rod electrode 7 ... Jack body 8 ... Plug insertion hole 9 ... Cylindrical insulator 10 ... Center electrode 15 ... Fixed electrode 11, 16, 17, 18 ... Electrical contact piece 12, 16a, 17a, 18a ... Projection portion 13, 16b, 17b, 18b ... Extension portion 16c, 18d ... Hole 17c ... Recessed portion

Claims (5)

[Claims] 1. An insulating cylindrical body, a cylindrical electrode fitted to the outer peripheral surface of the insulating cylindrical body, and an outer diameter formed integrally with the tip of the insulating cylindrical body and larger than the outer diameter of the cylindrical electrode. Of the insulating collar, a rod-shaped electrode that is arranged in the center of the insulating cylinder and is parallel to the insulating cylinder, and is formed between the inner peripheral surface of the insulating cylinder and the outer peripheral surface of the rod-shaped electrode. A plug having a cylindrical space, a rod-shaped electrode insertion hole into which the rod-shaped electrode is inserted, a cylindrical insulator inserted into the cylindrical space, and a rod-shaped electrode insertion hole disposed in the rod-shaped electrode insertion hole. A center electrode that engages with the tip of a rod-shaped electrode, a fixed electrode that is disposed outside and rearward of the cylindrical insulator, and contacts the fixed electrode when the plug is not inserted, and the insulated cylinder when the plug is inserted The cylindrical insulation is released by the body from engagement with the fixed electrode. An electrical contact having an extension that is moved in a direction orthogonal to the axis of the plug and having a protrusion that contacts the cylindrical electrode when the plug is inserted; In a jack used for a connecting device, a relief portion is formed in the extension portion of the electric contact piece at a position adjacent to the protrusion to avoid engagement of the plug with the insulating collar. Jack that is characterized. 2. The jack according to claim 1, wherein the escape portion is a hole. 3. The jack according to claim 2, wherein the hole edge of the hole near the protrusion is formed as a chamfered inclined surface or a rounded curved surface. 4. The jack according to claim 1, wherein the relief portion is a concave portion, and an edge of the concave portion is connected to a peripheral surface with a smooth curved surface. 5. A tongue piece and a hole formed by punching out a part of the electrical contact piece from the surface of the plug that contacts the insulating collar are provided as the escape portion, and the tongue piece is provided with the tongue piece. 2. The jack according to claim 1, wherein the jack is an inclined guide for smoothly guiding the insulating collar from the hole toward the protrusion when the connector is pulled out.