JP3250035B2 - Slide lock type coaxial 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 slide lock type coaxial connector which can be engaged and disengaged with a small operating force.

[0002]

2. Description of the Related Art Japanese Utility Model Publication No. 58-118682 discloses that
The following two coaxial connectors are described.

First, a first conventional coaxial connector will be described with reference to FIGS.

In the plug 100, the male conductor 121 is
It is embedded in an insulator 111 made of a plastic material. The periphery of the insulator 111 extends forward to form a tubular body 118 surrounding the male conductor 121.
The insulator 111 is screwed onto an end tube 119 made of a similar plastic material. One end of the coil spring 127 is compression-fixed to a protrusion 111A provided around the insulator 111, and the other end is fixed to an end 160A of a movable ring 160 made of a plastic material. Joining ring 150 made of plastic material
Is provided so as to be able to move on the periphery of the rear portion of the insulator 111 and on the front end portion of the end tube 119, and to prevent the rightward movement in FIG.
The inner peripheral wall has a protrusion 150A that engages with 1A.
The movable ring 160 includes the coupling ring 150 and the insulator 111.
And the coil spring 127 biases the tip 160B so that the tip 160B is always pressed against the shoulder 150B provided at the tip of the coupling ring 150. The movable ring 160 further has an inner inclined portion 160C at its tip. An outer groove 1 is formed on an outer peripheral portion of the insulator 111 facing the movable ring 160 of the tubular body 118.
18C is provided.

On the other hand, in the jack 200, the female terminal 2
Reference numeral 20 is embedded in an insulator 213 made of a plastic material. The insulator 213 is formed of the insulator 11 of the plug 100.
At the front end, there is an annular recess 214 for receiving one tubular body 118, and cut-out connecting tongues 215 are provided at at least two diametrically opposed locations around the periphery of the insulator 213 surrounding the annular recess 214. Is formed.
The front end of each of the cutout connection tongues 215 has an inner protrusion 21.
5A are formed.

[0006] Such a plug 100 and a jack 200
When connecting the plug 100 to the jack 20
0, the inner protrusion 215A of the connection tongue 215
And the beveled end 118B of the tubular body 118 comes into contact with each other, and the distal end 215B of the connecting tongue 215 is expanded in the radial direction by the spring property of the connecting tongue 215. When the plug 100 is further pushed in toward the jack 200 from this state, the tip 215B of the connecting tongue piece 215 that projects outwardly hits the inner inclined portion 160C of the movable ring 160, and the coil spring 127 is moved. Compressed and movable ring 1
60 is moved leftward in the drawing. This state is shown in FIG. Further, the plug 100 is connected to the jack 20.
When pushed to zero, the inner protrusion 215A of the connecting tongue piece 215 falls into the outer groove 118C of the tubular body 118 by its spring force. Then, a slight gap is formed between the outer periphery of the connecting tongue 215 and the inner side 160D of the movable ring 160, and the movable ring 160 is moved by the coil spring 127 as shown in FIG.
The outer periphery of the connecting tongue piece 215 in a state where the inner protrusion 215A has fallen into the outer groove 118C of the tubular body 118 is pressed by the inner side 160D of the movable ring 160 as shown in FIG. This state is shown in FIG. In this state, the male conductor 121 is inserted and contacted into the female conductor 220, and the connection between the plug 100 and the jack 200 is completed. In this state, simply plug 100 into jack 20
Even if it is pulled to retract from zero, the inner protrusion 215A
Are dropped into the outer groove 118C, and the inner side 160D presses the connection tongue piece 215 from the outside.
The connection between the plug 100 and the jack 200 cannot be separated.

When separated, the coil spring 127
The movable ring 160 is moved to the left in FIG. 5 so that the inner tongue 160C of the movable ring 160 is connected to the connecting tongue 21 so that the connecting tongue 21 is compressed.
When the force that retreats the entire plug 100 to the left in FIG. 5 when the position of the tip 215B of the fifth tongue 5 is reached, the tip 215B of the connecting tongue 215 is no longer limited by the inner side 160D of the movable ring 160. The inner protrusion 215A is displaced outwardly from the outer groove 118C by the cam action of the right edge of the outer groove 118C, and the plug 100 is eventually separated from the jack 200.

Next, a second conventional coaxial connector will be described with reference to FIGS. 6 and 7. FIG.

When the plug 300 is inserted into the jack 200, the inner projection 21 of the connecting tongue 215 of the jack 200
5A and the beveled end 318B of the tubular body 318 come into contact with each other, and the distal end 215B of the connecting tongue 215 is radially expanded by the spring property of the connecting tongue 215. When the plug 300 is further pushed into the jack 200 from this state, the tip 215B of the connecting tongue 215 and the coupling ring 3
The distal end 355 of the elastic ring 353 is brought into contact with the tip 355 of the elastic ring 353, and the convex portion 354 of the elastic tongue 353 provided on the inner side of the ring 350 contacts the tapered portion 312 of the insulator 310. As the convex portion 354 moves to the rear of the tapered portion 312, the convex portion 354 of the elastic tongue piece 353 is expanded in the radial direction, and the spring force is strengthened. FIG. 6 shows this state.

Further, when the plug 300 is pushed into the jack 200, the inner protrusion 215A of the connecting tongue 215 falls into the outer groove 318C of the tubular body 318 by its spring force. Then, a slight gap is formed between the inner side 356A of the coupling ring 350 and the outer periphery of the connecting tongue 215, and the coupling ring 350 is moved by the spring force of the elastic tongue 353 and the tapered portion 312.
The outer periphery of the connecting tongue 215 is pressed by the inner side 356A of the coupling ring 350 in a state in which the inner projection 215A falls into the outer groove 318C of the tubular body 318 by the cooperation of To be. This state is shown in FIG. In this state, the male terminal 340 is connected to the female terminal 32.
0, the plug 300 can be simply pulled from a place other than the coupling ring 350.
The connection between 0 and jack 200 cannot be separated.

When it is desired to separate the plug 300 and the jack 200, the connecting ring 350 is moved rearward (to the left) in FIG. 7 so that the tip 355 of the connecting ring 350 reaches the position of the tip 215B of the connecting tongue 215. To
Further, when a force for retreating the entire plug 300 to the left is applied, the tip 215B of the connecting tongue 215 is no longer limited by the inner side 356A of the coupling ring 350, so that the inner protrusion 215A becomes the right edge of the outer groove 318C. Is displaced outwardly by the cam action of and is removed from the outer groove 318C,
The plug 300 is separated from the jack 200.

[0012]

The above-mentioned conventional first coaxial connector has a complicated structure and employs a coil spring, so that the operation force required for fitting and disengaging is large, and the cost is low. Was expensive.

In the conventional second coaxial connector, each connecting tongue is not covered by the coupling ring before fitting, and further outward (in a direction away from the axial center of the connector). F) Since it is protruding, there is a disadvantage that it is easily damaged.

Therefore, the present invention solves the above-mentioned drawbacks of the conventional coaxial connector, has a simple structure, can be fitted and disengaged by a light operating force, and can prevent damage due to exposure of the locking spring member. It is an object of the present invention to provide a slide-lock type coaxial connector which can prevent the slide lock type coaxial connector.

[0015]

The present invention employs the following means in order to solve the above-mentioned problems.

1. A first insulator, a first central contact provided in a central axial direction of the first insulator, an internal contact provided outside the first insulator, and a first contact provided outside the internal contact.
An external contact, a plug provided outside the first external contact and having a coupling member slidable with respect to the first external contact, a second insulator, and a central axial direction of the second insulator; Coaxial connector comprising a second center contact provided, and a receptacle having a second external contact provided outside the second insulator.
The first external contact includes a cylindrical portion and at least one leaf spring piece formed integrally with the cylindrical portion,
Each of the leaf spring pieces has an inner convex portion and a first outer convex portion at a distal end, and a second outer convex portion in the middle, and the second external contact has at least one concave portion on an outer surface. When the coupling member slides, the coupling member presses the second outer convex portion, so that the inner convex portion fits into the concave portion, and the coupling member approaches the first outer convex portion. A slide lock type coaxial connector in which the inner convex portion is prevented from coming out of the concave portion by being opposed.

2. The coupling member has a deep concave portion in which the first outer convex portion fits inside the tip, a shallow straight groove that follows the deep concave portion, and in which the second outer convex portion fits before fitting, and the shallow straight line. Following the groove, and having an inner peripheral surface that presses the second outer convex portion and the first outer convex portion, and an inner bent portion that limits a slide stroke at a rear end,
The slide lock type according to claim 1, wherein the first external contact has a step portion serving as a stopper for a fitting stroke of the coupling member, and the internal contact has a step portion serving as a stopper for a detachment stroke of the coupling member. Coaxial connector.

3. The slide lock type coaxial connector according to claim 1, wherein the concave portion of the second external contact is a circumferential groove.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.

The plug 1 has a cylindrical insulator 2
A central contact 3 provided in the central axial direction of the insulator 2; an internal contact 4 provided outside the insulator 2; an external contact 5 provided outside the internal contact 4; And a cylindrical coupling member 6 provided at the end. A predetermined portion on the tip side of the center contact 3, the inner contact 4, and the outer contact 5 protrudes from the tip 2A of the insulator 2. Also, the center contact 3,
The insulator 2, the internal contact 4, the external contact 5, and the coupling member 6 are arranged concentrically.

The internal contact 4 comprises a cylindrical portion 4A and a plurality of leaf spring pieces 4B formed integrally with the cylindrical portion 4A. An outer convex portion 4C is provided at the tip of each leaf spring piece 4B, and the inside of the first step portion 4D and the second step portion 4
The inside of E is in contact with the tip 2A and the step 2B of the insulator 2, respectively.

The external contact 5 comprises a cylindrical portion 5A and a plurality of leaf spring pieces 5B formed integrally with the cylindrical portion 5A. An inner convex portion 5C and a first outer convex portion 5D are provided at the tip of each leaf spring piece 5B, and a second outer convex portion 5E is provided in the middle of each leaf spring piece 5B. A step 5F is provided on the tip side of the cylindrical portion 5A, and the rear end of the cylindrical portion 5A is in contact with the outside of the second step 4E of the internal contact 4.

The coupling member 6 has a deep concave portion 6A in which the first outer convex portion 5D of each leaf spring piece 5B fits inside the distal end.
And a shallow straight groove 6B following the deep recess 6A.
Is provided at the rear end, and an inner bent portion 6D which comes into contact with the outside of the second step portion 4E of the internal contact 4 is provided.

The receptacle 11 includes a cylindrical insulator 12 (see FIG. 2), a center contact 13 provided in the center of the insulator 12 in the axial direction, and a cylindrical external contact 1 provided outside the insulator 12.
And 4. A hole 13A is provided at the tip of the center contact 13, and a circumferential groove 14A is provided on the outer surface of the external contact 14. Predetermined portions on the tip side of the center contact 13 and the external contact 14 protrude from the tip 12A of the insulator 12. In addition, the center contact 13 and the insulator 12
The external contacts 14 are arranged concentrically.

The fitting and locking of the plug 1 and the receptacle 11 are performed in the following steps.

1. When the plug 1 is inserted into the receptacle 11 in the state before fitting shown in FIG. 1A, the state shown in FIG. In this state, the tip of the center contact 3 is inserted into the hole 13A of the center contact 13, and the outer protrusion 4C of each leaf spring piece 4B of the inner contact 4 is formed.
Contacts the inner peripheral surface of the external contact 14, and the outside of the first step portion 4 </ b> D of the internal contact 4
Abut on the tip.

2. Knurling 6E of coupling member 6
Is gripped with fingers, and the coupling member 6 is slid toward the receptacle 11 until the inner bent portion 6D comes into contact with the outside (stopper) of the step portion 5F of the external contact 5.

3. At this time, first, the second
The outer convex portion 5E escapes from the shallow straight groove 6B, and is displaced and pressed by the inner peripheral surface 6C of the coupling member 6, so that each first outer convex portion 5D escapes from the deep concave portion 6A, and at the same time, each inner convex portion. The portion 5C fits into the circumferential groove 14A of the external contact 14. However, it is not locked.

4. Next, the inner peripheral surface 6 of the coupling member 6
When C approaches and opposes each first outer convex portion 5D, each inner convex portion 5C cannot escape from the circumferential groove 14A, that is, is locked, and reaches the state of FIG. 1 (c). In this state, the fitting between the plug 1 and the receptacle 11 is completed, and the plug 1
Is locked to the receptacle 11, so that the plug 1
Is prevented from being withdrawn from the receptacle 11.

The unlocking and detachment of the plug 1 from the receptacle 11 is performed in the following steps.

1. In the state shown in FIG.
The knurl 6E of the coupling member 6 is grasped with fingers, and the coupling member 6 is slid toward the plug 1 until the inner bent portion 6D contacts the outside (stopper) of the second step portion 4E of the internal contact 4. .

2. At this time, first, the inner peripheral surface 6C of the coupling member 6 does not face the first outer convex portion 5D of each leaf spring piece 5B, so that the lock is released. However, each inner convex portion 5C fits in the circumferential groove 14A of the external contact 14.

3. Next, each second outer convex portion 5E is attached to the inner peripheral surface 6E.
When the inner convex portion 5C is displaced from C to the shallow straight groove 6B, the inner convex portion 5C escapes from the circumferential groove 14A and the first outer convex portion 5D.
Fits into the deep recess 6A, and reaches the state shown in FIG.

4. In this state, since the plug 1 is not locked to the receptacle 11, when the plug 1 is pulled out of the receptacle 11, the detached state shown in FIG.

FIG. 2 shows a slide lock type coaxial connector according to an embodiment of the present invention, in which the plug 1 is connected to the contraction tube 21 and the receptacle 11 is connected to the contraction tube 31.
FIG. 2 is an overall schematic diagram showing a state in which the power supply is connected to.

In the state (a) before fitting, the plug 1
Is inserted into the receptacle 11 and the coupling member 6 is slid to the receptacle 11 side. After the state shown in (b) of the fitting process and the state shown in (c) after fitting but before locking, ( After the fitting of d), the locked state is reached.

In the above-described embodiment, a plurality of leaf spring pieces 5B are employed, but the design can be changed to one. The design of the circumferential groove 14A can be changed to a simple concave portion.

[0038]

As is apparent from the above description, the present invention has the following advantages.

1. First and second opposing convex portions, which are pressed against the inner peripheral surface of the coupling member, are provided at the middle and distal ends of the leaf spring pieces of the external contact in the plug.
An outer convex portion is provided. Therefore, even if the inner convex portion at the tip of the external contact of the plug is largely displaced and securely fits into the concave portion (circumferential groove) of the external contact of the receptacle, the second outer convex portion of the external contact of the plug is displaced small. Therefore, the slide lock type coaxial connector can be configured compactly and with a simple structure.

2. By simply sliding the coupling member with respect to the external contact of the plug with a small operating force, the plug is locked and unlocked with respect to the receptacle, so that operability is good.

3. Even in the state before the fitting, the leaf spring pieces of the external contact and the internal contact are arranged in the coupling member, so that they are not easily damaged.

[Brief description of the drawings]

FIGS. 1A and 1B are a cross-sectional view and a front view of a main part of a slide lock type coaxial connector according to an embodiment of the present invention, wherein FIG. 1A shows a state before fitting and FIG. Before lock,
(C) shows the state after fitting and after locking, respectively.

FIG. 2 is a schematic cross-sectional view and a front view of the entire slide lock type coaxial connector according to an embodiment of the present invention;
(A) is a state before fitting, (b) is a state in the middle of the fitting process, (c) is a state after fitting but before locking, and (d) is a state after fitting and after locking. Are respectively shown.

FIG. 3 is a sectional view showing a state before fitting of a conventional first coaxial connector.

FIG. 4 is a cross-sectional view showing a state immediately before fitting of a conventional first coaxial connector.

FIG. 5 is a cross-sectional view showing a state after fitting of a conventional first coaxial connector.

FIG. 6 is a cross-sectional view showing a state immediately before fitting of a second conventional coaxial connector.

FIG. 7 is a sectional view showing a state after fitting of a second conventional coaxial connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plug 2 Insulator 2A Tip 2B Step part 3 Center contact 4 Internal contact 4A Cylindrical part 4B Leaf spring piece 4C Outer convex part 4D First step part 4E Second step part 5 External contact 5A Cylindrical part 5B Leaf spring piece 5C Inner convex part 5D 1st outside convex part 5E 2nd outside convex part 5F Step part 6 Coupling member 6A Deep concave part 6B Shallow straight groove 6C Inner peripheral surface 6D Inside bent part 6E Knurl 11 Receptacle 12 Insulator 12A Tip 13 Center contact 13A Hole 14 External Contact 14A Circular groove 21 Shrink tube 31 Shrink tube

────────────────────────────────────────────────── ─── Continuing on the front page (72) Minoru Takahashi 4-1-1, Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Prefecture Inside Fujitsu Limited (72) Inventor Teruaki Kitsuki 4 Kamikadanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Prefecture No. 1-1 Fujitsu Limited (56) References JP-A-1-276576 (JP, A) JP-A-7-302647 (JP, A) JP-A-10-32042 (JP, A) 64-55578 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 17/04 H01R 13/639

Claims (3)

(57) [Claims] 1. A first insulator, a first central contact provided in a central axial direction of the first insulator, an internal contact provided outside the first insulator, and a second contact provided outside the internal contact. 1
An external contact, a plug provided outside the first external contact and having a coupling member slidable with respect to the first external contact, a second insulator, and a central axial direction of the second insulator; A second central contact and a receptacle having a second external contact provided outside the second insulator, wherein the first external contact is integrally formed with the cylindrical portion and the cylindrical portion. And at least one leaf spring piece formed,
Each of the leaf spring pieces has an inner convex portion and a first outer convex portion at a tip, and a second outer convex portion in the middle, and the second external contact has at least one concave portion on an outer surface. When the coupling member slides, the coupling member presses the second outer convex portion, so that the inner convex portion fits into the concave portion, and the coupling member approaches the first outer convex portion. The slide-lock type coaxial connector, wherein the inner lock portion is prevented from coming out of the concave portion by being opposed. 2. The coupling member according to claim 1, wherein said coupling member has a deep concave portion in which said first outer convex portion fits inside a distal end, and a shallow straight groove which follows said deep concave portion and in which said second outer convex portion fits before fitting. And, following the shallow straight groove, and having an inner peripheral surface that presses the second outer convex portion and the first outer convex portion, and an inner bent portion at the rear end that limits a slide stroke, The said 1st external contact has a step part which serves as a stopper of the fitting stroke of the said coupling member, The said internal contact has a step part which serves as a stopper of the removal stroke of the said coupling member, The Claims characterized by the above-mentioned. 2. The slide lock type coaxial connector according to 1. 3. The slide lock type coaxial connector according to claim 1, wherein the recess of the second external contact is a circumferential groove.