JPH01276576A - Connector - Google Patents

Abstract

PURPOSE:To obtain a connector having sufficient fastening force and sure connection by moving a movable sleeve in the insertion direction to narrow a connecting part and to shrink the inner diameter of the leg of a metallic shell, and engaging a locking projection with the recess of a mating connector. CONSTITUTION:A connector 3 consists of a connector main body comprising a cable holder 31 having a cylindrical insulator 312 and a metallic shell 32, and a cylindrical movable sleeve 33 movably mounted outside the connector main body. The tip of the metallic shell 32 where an insertion part 221 of a mating connector 2 is inserted is divided into a plurality of legs capable of elastically displacing in the central direction. When the movable sleeve 33 is moved in the insertion direction after insertion, a small diameter connecting part narrows the tip of the leg during insertion to elastically displace it inward. The inner diameter of the tip of the leg is narrowed and a locking projection is engaged with the recess of a mating connector to complete locking connection. A connector having sufficient fastening force and sure connection is obtained.

Description

[Detailed Description of the Invention] [Summary] The present invention relates to circular connectors such as coaxial connectors, and in particular to connectors with an excellent locking function to prevent removal, and provides a connector that has sufficient fastening force and can be closely mounted. A connector which is inserted into and removed from a mating connector having a concave groove on its outer periphery, the connector having a plurality of legs that can be elastically displaced inward and have a lock protrusion formed on the inner surface of the tip to engage with the concave groove. a metal shell having portions arranged in a cylindrical shape; and a movable sleeve provided movably in the axial direction on the outer periphery of the metal shell and having a fastening portion formed on the inner periphery, the movable sleeve being moved in the insertion direction. When the metal shell is moved, the inner diameters of the four parts of the metal shell are narrowed by the small diameter part, and the lock protrusions engage with the grooves of the mating connector.

[Industrial application field]

The present invention relates to a circular connector such as a coaxial connector, and more particularly to a connector with an excellent locking function to prevent removal, and a tool for removing the same.

In recent years, with the increasing density and speed of digital electronic devices, it has become necessary to mount multiple coaxial connectors in high density for the transmission of high-speed pulses such as clock signals. It has become difficult to secure sufficient space for the locking operation, making it difficult to obtain a sufficient locking function.

Therefore, there is a strong demand for a connector that does not require space for insertion/extraction and locking operations, and has a good effect of preventing disconnection.

[Conventional technology]

FIG. 4 is a sectional view showing the main parts of a conventional circular connector such as a small coaxial connector.

In the figure, 1 is a connector on the jack side to which an external connection cable is connected, and an insulator 12 with a contact to which a cable 5 is connected is inserted from the rear (left side) of a cylindrical metal shell 11, and is insulated. The metal shell 11, which extends to the front of the body 12, has a protrusion 11a on the inner periphery of the tip, and is divided into a plurality of legs 11c by a slit ttb, so that it can be elastically displaced inward. Then, an annular spring 13 having a notch in a part of the circumference and having an inner diameter smaller than the outer diameter of the leg portion 11c is fitted, and the tip of the metal shell 11 is biased in the direction of decreasing the inner diameter as indicated by P. ing.

Reference numeral 2 denotes a mating connector such as a plug connector mounted on the device side, which is composed of an insulator 21 holding a center contact 21a and a plug shell 22 into which the outer periphery of the insulator 21 is fitted. A concave groove 22a is formed on the outer periphery of the plug shell 22, and the protrusion 11a of the leg of the jack connector into which the jack connector 1 is inserted sinks into the concave groove 22a and engages, thereby preventing the connector from being pulled out. It had become.

[Problem to be solved by the invention]

In the above-mentioned conventional connector, the legs are biased by an annular spring and engaged with the groove, so the locking function is not sufficient. There was a problem in that the number of wires increased and the operability during insertion and removal deteriorated. Furthermore, when the connectors are closely mounted, it is impossible to grasp the connector when removing it, and as the cable is grabbed and pulled out, force is applied to the connection section, which reduces the reliability of the connection.

The present invention was created in view of the above problems, and an object of the present invention is to provide a connector that has sufficient fastening force and can be closely mounted.

[Means to solve the problem]

The above-mentioned problem is solved by the present invention, which is a connector that is inserted into and removed from a mating connector having a groove on its outer periphery. a metal shell having legs arranged in a cylindrical shape; a fastening portion movable in the axial direction provided on the outer periphery of the metal shell and having an inner diameter smaller than the inner diameter of the tip end formed on the inner periphery; It has at least a substantially cylindrical movable sleeve with a U-shaped pull-out groove, and when the movable sleeve is moved in the insertion direction, it is squeezed by the fastening portion and the inner diameter of the leg of the metal shell is reduced, thereby causing the locking The problem is solved by a connector in which the protrusion is configured to engage the recessed groove of the mating connector.

[Effect]

Before insertion, the movable sleeve is retracted, the legs of the metal shell are not elastically displaced, and the inner diameter of the lock protrusion at the tip is in a free state larger than the outer diameter of the mating connector. In this state, the connector body can be inserted into the mating connector using only the original insertion force. Then, when the movable sleeve is moved in the mating direction after insertion, the small-diameter fastening part squeezes the tip of the leg during this pushing movement and elastically displaces it inward, so the inner diameter of the tip of the leg is pinched and the locking protrusion is The locking is completed by engaging with the groove of the mating connector.

In this state, the annular fastening portion of the metal sleeve fastens the legs, so a strong lock is achieved.

At the time of extraction, the lock can be easily released by moving the movable sleeve in the extraction direction using a extraction tool that has a smaller outer diameter than the movable sleeve and has a claw at the tip that engages with the extraction groove. When the connector is pulled out, the connector body, which is pushed in the pulling direction by the movable sleeve, can be pulled out without being affected by the lock.

In this case, since the extraction tool does not protrude outside the area of its own connector, it is not necessary to provide a space for insertion and extraction around the connector, so a plurality of connectors can be closely mounted. Furthermore, since no force is applied to the cable when it is pulled out, there is no adverse effect on the wire connection section, and connection reliability is improved.

〔Example〕

The present invention will be explained in detail below with reference to the accompanying drawings.

FIG. 1 is a sectional view showing a connector according to the present invention, FIG. 1A is an exploded view of the main parts, FIG. The figure is a sectional view showing the structure and operation of the connector of the present invention.
(B) shows the connector body after insertion, and (C) shows the locked state.

In FIG. 2, reference numeral 2 denotes a mating connector such as a plug connector mounted on the device side, which, like the conventional example, consists of an insulator 21 holding a male contact 21a in the center and a plug shell 22 fitted around the outer periphery of the insulator 21. It consists of A locking recess a222 is provided around the outer periphery of the insertion portion 221 at the front of the plug shell 22.

Next, the structure will be explained with reference to FIGS. 1 and 2 (a).

The connector 3 of the present invention includes a connector main body consisting of a cable holding body 31 made of a substantially cylindrical insulator 312, etc., a metal shell 32, and a cylindrical movable sleeve 33 provided on the outer periphery of the connector main body so as to be movable back and forth. It consists of

The connector body includes an insulator 312 that holds a female contact 311 in the center, a cylindrical cable holder 31 that is sequentially inserted and integrated into the rear of the insulator 312 together with the coaxial cable 5 to be connected, and the cable. It consists of a substantially cylindrical metal shell 32 that is screwed onto and fixed to a holder 31.

The distal end side of the metal shell 32 is a portion into which the insertion portion 221 of the mating connector 2 is inserted, and is formed by a slot 321.
It is divided into a plurality of legs 322 that can be elastically displaced in the center direction. A lock protrusion 322a that engages with the groove 222 of the mating connector 2 is formed on the inner periphery of the tip of each leg 322, a large diameter portion 322b at the tip of the outer periphery, a small diameter portion 322C at the rear, and both diameter portions. A sloped portion 322d is formed between the two sides. Further, the outer periphery of the intermediate portion of the metal shell 32 is formed by a leg portion 322.
The outer diameter is smaller than the small diameter part 322C of the movement control part 3, and a gentle protrusion 323a is provided around that part.
23, and the rear thereof is a flange portion 324 having the largest outer diameter.

The movable sleeve 33 has a section from the tip (right end) of the inner circumference to the rear (
(left direction), a release part 331 having an inner diameter larger than the large diameter part 322b of the metal shell, an actuating part 332 consisting of an inclined surface, a fastening part 333 having an inner diameter smaller than the large diameter part 322b, and the metal shell. Step portions 334 that come into contact with the flange portion 324 of the shell are sequentially formed, and two window portions 335 opening into the inner wall are provided on the outer periphery of the fastening portion 333.
A spring storage groove 335 having a shape of 1.a is provided around the periphery, and a pair of substantially U-shaped extraction grooves 336 are formed from the rear end.

After inserting the movable sleeve 33 from the front of the metal shell 32, as shown in FIG. When the ring spring 34 is fitted into the spring storage groove 335, the tip portion 341 protrudes from the window portion 335a to the inner wall, and the movement control portion 323 of the metal shell 32
This acts to prevent the movable sleeve 33 from coming off the metal shell 32 of the connector body, and also controls the movement control section 323 on the outer periphery of the metal shell 32 to an appropriate pressure P.
Press with .

Next, the operation at the time of insertion and removal of the connector configured as described above will be explained with reference to FIG.

Before insertion, as shown in Figure (A), the movable sleeve 33 is in a retracted position with its stepped portion 334 in contact with the flange portion 324 of the metal shell 32, and the large diameter portion 322b at the tip of the metal shell 34 is movable. Since the leg portion 322 is surrounded by the release portion 331 of the sleeve, the leg portion 322 is in a free state without being displaced inward, and the inner diameter of the lock protrusion 322a is larger than the outer diameter of the insertion portion 221 of the mating connector 2. . Therefore, the connector main body is inserted into the mating connector with a predetermined insertion force without being hindered by the lock protrusion, an electrical connection is made, and as shown in FIG.
is positioned outside the concave groove 222 of the mating connector 2.

Next, when the movable sleeve 33 is moved in the insertion direction, the large diameter part 322b of the metal shell 32 rides on the operating part 332 and fastening part 333 of the movable sleeve whose inner diameter gradually becomes smaller, and the tip thereof is elastically displaced inward. Inner lock protrusion 3
22a engages with the concave groove 222 of the mating connector 2 and is locked to prevent removal, resulting in the locked state shown in FIG. In this process, the ring spring 34 climbs over the chevron-shaped protrusion 323a of the metal shell and moves forward together with the ring spring 34, and its tip 3
41 engages with the recess in the front part of the protrusion 323a, so that the movable sleeve 33 is maintained in this position (fastened position).

During extraction, when the movable sleeve 33 is moved in the extraction direction, the large diameter portion 322b of the metal shell leg 322 returns to the outside, and the lock is released, and the ring spring 3
4 engages with the rear of the protrusion 323a, and the metal sleeve 33
When the metal shell 32 is held in the release position and becomes the state shown in FIG. Return to state (a).

FIG. 3 is a perspective view showing the main parts of the extraction tool 4 for easily performing the above-mentioned extraction operation without requiring space. A claw portion 42 that fits into the pull-out groove 336 of the movable sleeve 33 is protruded from the tip of the approximately semi-cylindrical shaft portion 41. When the connector is inserted into the movable sleeve 33 from the rear part, the claw portion 42 It is inserted while being guided by the 5 characters and rotating. Next, when the extraction tool is pulled out, the claw part 42
The movable sleeve 33 can be engaged with the tip of the letter and can apply a force in the pulling direction to the movable sleeve 33. In this way, the pulling tool for pulling out the connector of the present invention can be made smaller than the outer circumference of the movable sleeve of the connector, which not only makes it possible to mount the connector closely, but also simplifies the pulling operation. Since the cable is not pulled, the reliability of the connection section will not be compromised.

〔Effect of the invention〕

According to the present invention, it is possible to provide a connector that has a locking mechanism for a connector that has sufficient fastening force and can be closely mounted, and a pull-out tool that can pull it out with a simple operation. It is remarkable that it contributes to miniaturization and high density.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the connector according to the present invention, Fig. 2 is a sectional view showing the structure and operation of the connector of the invention, Fig. 3 is a perspective view showing the main parts of the extraction tool, and Fig. 4 is a conventional FIG. 3 is a diagram showing the main parts of the connector. In the figure, 2 - mating connector, 222 - groove, 3 - connector, 31 cable holder, 311 - contact, 312 - insulator, 32 - metal shell, 321 - slot, 322 - leg Department,
322a - lock protrusion, 322b - large diameter part, 322c - small diameter part, 323 - movement control part, 323a - protrusion, 324 - flange part,
33-movable sleeve, 331-release part,
332--actuating part, 333--fastening part, 3
34・-Spring storage groove, 33+a-Window part, 3
35--step part, 336-m-pulling groove, 34
- Ring spring, 341-, tip, 4
-・-Extraction tool, 41-・Shaft part, 42-
The claw part, 5-cable, is. ! ,,:I'

Claims (1)

[Scope of Claims] A connector that is inserted into and removed from a mating connector (2) having a groove (222) on its outer periphery, comprising a lock that can be elastically displaced inward and that engages with the groove (222) on the inner surface of its tip. A metal shell (32) has a plurality of legs (322) formed with protrusions (322a) arranged in a cylindrical shape.
), and a fastening part (333) is provided on the outer periphery of the metal shell (32) so as to be movable in the axial direction, and a fastening part (333) having a smaller diameter than the inner diameter of the tip is formed on the intermediate inner periphery, and has a substantially J-shape at the rear end. It has at least a substantially cylindrical movable sleeve (33) with a shaped pull-out groove (336), and when the movable sleeve is moved in the insertion direction, the fastening portion (
333) of the metal shell (32).
A connector characterized in that the inner diameter of the connector (22) is reduced and the lock protrusion (322a) is configured to engage with the groove (222) of the mating connector (2).