JP2511375Y2 - Coverage locking mechanism for electrical connectors - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover case locking mechanism for an electric connector.

[0002]

2. Description of the Related Art Conventionally, as an example of a shield type electric connector, as shown in a perspective view of FIG. 4 of the accompanying drawings, an insulating housing 2 in which a contact 1 is arranged, and a shield for housing the insulating housing. Case 3 and cover case 4
And a pair of lock screws 5 for locking the fitting with the mating connector. In this type of electrical connector, the cable 7 connected to the contact 1 is pulled out rearward from the cable pull-out portion 8 at the rear end of the cover case 4, and this electrical connector is fitted to the mating connector. Lock screws 5 on both sides
The fitting is locked by screwing the threaded portion 6 at the tip of the into the corresponding threaded portion of the mating connector.

[0003]

The cover case 4 of such a conventional shield type electrical connector is formed as an integral body, and therefore, the insulating housing 2 in which the contact 1 is arranged and the shield case. Usually, the cover 3, the cover case 4, and the lock screw 5 are shipped separately. And on the user side,
When connecting the cables, after connecting the cable core wires to the respective connection portions of the contactors 1 arranged in the insulating housing 2, the cable-connected insulating housing 2 is housed in the shield case 3, and further, By attaching the cover case 4 integrally formed from the rear end to the shield case 3 and assembling the lock screws 5 on both sides of the cover case 4, the connection of the cable 7 to the electric connector is completed.

For this reason, in the shipping state, the number of parts in a loose state is large, and it is easy for the parts to be lost or the combination to be mistaken. Further, it takes time and effort for cable connection on the user side. The lock screw is only for locking the mating with the mating connector, and there is still room for improvement in terms of cost reduction due to multifunctionalization of one component.

An object of the present invention is to provide a cover case locking mechanism for an electric connector which can solve the problems of the conventional techniques.

[0006]

According to the present invention, an insulating housing having contacts arranged therein, a shield case and a cover case divided into two for housing the insulating housing, and a mating connector are fitted together. In a cover case locking mechanism for an electrical connector, which includes a pair of lock screws for locking the lock, each lock screw is inserted through both sides of one split shield case and the corresponding one split cover case. Lock screw through hole for
One of the two split shield cases and the corresponding one of the two shield cases
The two split shield cases are provided at positions aligned when combined with the split cover case, and the split surface sides of the one split shield case and the corresponding one split cover case are on the same side. Then, the above 2
The split shield cases are shaped so that they can be combined with each other by fitting them into the corresponding one of the two split cover cases.
By inserting the lock screws into the aligned lock screw through holes in a state in which the split shield case and the corresponding one of the split cover cases are combined, the one split shield case by the lock screws is inserted. And the corresponding one of the two split cover cases is maintained, and at the same time, each lock screw has the one of the two split shield cases and the corresponding one of the two split cover cases in the combination state. You will be prevented from falling out.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, based on FIGS. 1 to 3 of the accompanying drawings,
Embodiments of the present invention will be described in more detail.

FIG. 1 is an exploded perspective view showing an arrangement of an electric connector having a cover case locking mechanism according to an embodiment of the present invention. As shown in FIG. 1, the electrical connector of this embodiment is mainly composed of an insulating housing 10 in which a large number of contacts are arranged, and a metal which constitutes one of two divided shield cases. A die-cast 20 made of metal, a metal shield plate 30 that constitutes the other two-split shield case of the two-split shield case, and one half-split cover case of the split split cover case A first cover case 40 made of plastic, a second cover case 50 made of plastic that constitutes the other two-piece cover case of the two divided cover cases, a pair of lock screws 60, and a metal cable retainer 70. And are equipped with.

The insulating housing 10 may be conventional and will not be described in detail here. The die cast 20 includes a pair of side wall portions 21 and a cable drawing frame 22 at the rear end portion. At the front end of each side wall portion 21, an overhanging portion 23 that overhangs outward is integrally formed.
3, a lock screw through hole 25 having a function described later is formed. Further, lock screw through holes 24 are formed at positions on both sides of the cable pull-out frame 22 at positions aligned with the lock screw through holes 25. The front end portion of the die casting 20 provides an insulating housing holding portion 28 that holds the insulating housing 10. Furthermore, at the upper end of the side wall portion 21, screw screw holes 26 and 27 for fixing the shield plate 30 and the cable retainer 70 with appropriate screws (not shown) are provided, as will be described later.

The shield plate 30 is formed in a sheet shape as a whole, and is for covering the die-casting 20 in which the insulating housing 10 to which the cables are connected is installed in the insulating housing holding portion 28 of the die-casting 20. is there. The shield plate 30 has screw through holes 3 at positions corresponding to the screw screw holes 26 and 27 of the die casting 20.
1 and 32 are provided.

The first cover case 40 is integrally molded of a plastic material and has a pair of side wall portions 41. Inside each side wall portion 41, the first columnar portion 43 is formed.
And a second columnar portion 44 are provided. First columnar part 4
As will be described later, an elongated hole 45 for allowing the lock screw 60 to pass through is formed in 3, and a lock screw through hole 46 for allowing the lock screw 60 to be pressure-inserted is provided in the second columnar portion 44. There is. That is, in this embodiment, the inner diameter of the lock screw through hole 46 is slightly smaller than the outer diameter of the lock screw 60. Furthermore, a pair of locking protrusions 42 is provided on the outer surface of each side wall portion 41.

The shape of the inner side wall of the first cover case 40 is formed so as to match the shape of the outer side wall of the die casting 20 as a whole, so that the die casting 20 can be closely received. .

Like the first cover case 40, the second cover case 50 is integrally molded of a plastic material and has a pair of locking pieces 51 on both sides.
Is provided, and each locking piece 51 has a locking opening 5 that engages with each locking protrusion 42 of the first cover case 40.
2 is formed.

Each lock screw 60 has an insulating knob 6 at one end.
1 and the other end has a lock screw portion 62 that engages with the lock screw portion of the mating connector.

Finally, the cable retainer 70 is made of the same metal material as that of the shield plate 30, and has appropriate screws (not shown) for the cable retainer 71 and the screw screw holes 26 of the die casting 20. And a screw through hole 72 for tightening and fixing.

Next, how to assemble the parts of the electric connector having such a structure will be described with reference to FIGS. 2 and 3.

First, the die casting 20, the first cover case 40, and the pair of lock screws 60 can be shipped to the user in an assembled state as shown in the perspective view of FIG. To obtain such an assembled state, first,
The die casting 20 is fitted tightly into the first cover case 40. At this time, the elongated holes 45 of the first columnar portion 43 of the first cover case 40 and the lock screw through holes 46 of the second columnar portion 44 and the lock screw through holes 24 and 25 of the die casting 20 are aligned with each other. Is designed to. Insert the lock screws 60 into the holes aligned in this way.
The lock screw portion 62 at the tip of the lock screw through hole 24,
The elongated hole 45, the lock screw through hole 46, and the lock screw through hole 25 are inserted in this order. At this time, since the inner diameter of the lock screw through hole 46 is made slightly smaller than the outer diameter of the lock screw 60, it is necessary to insert the lock screw portion 62 into the inner wall of the lock screw through hole 46 so that the lock screw portion 62 is screwed into the lock screw portion 62 for pressure insertion. is there.

In this way, each lock screw 60 is inserted until the lock screw portion 62 at the tip of each lock screw 60 projects forward from the lock screw through hole 25. FIG. 2 shows a state in which the assembling is completed in this way.

In the assembled state of FIG. 2, the first cover case 40 and the die cast 20 are held in the assembled state by a pair of lock screws 60. Since the lock screw portion 62 at the tip of each lock screw 60 is pressure-inserted into the lock screw through hole 46, it does not fall off from the assembly.

This electrical connector includes a die cast 20, a first cover case 40 and a pair of lock screws 60 in an assembled state as shown in FIG. 2, an insulating housing 10 in a loose state, a shield plate 30, and a first plate. 2 The cover case 50, the cable retainer 70, and an appropriate screw are assembled as a part and shipped.

When the user uses such an electric connector, the user connects the core wires of the cable 80 to the connection parts of the contacts of the insulating housing 10 and the die casting in the assembled state as shown in FIG. The insulating housing 10 is installed in the insulating housing holding portion 28 of 20 and the connected cable 80 is pulled out to the rear of the cable drawing frame 22, and then the shield plate 30 and the cable retainer 70 are attached to the die cast 20. Then, as shown in the perspective view in FIG. 3, the second cover case 50 is covered so that the locking openings 52 of the respective locking pieces 51 are attached to the first cover case 40. It is only necessary to properly engage the corresponding locking projections 42 of.

[0022]

According to the present invention, since the cover case locking mechanism that locks the first cover case and the die-cast with the pair of lock screws in the assembled state is provided, the parts constituting the electrical connector are separated. Since the number of states can be reduced, it is possible to reduce the frequency of inconveniences such as loss of parts in shipping and the like, and the parts can be handled more easily.

Also on the user side, the cable-insulated insulating housing is installed on the die-casting already assembled to the first cover case by the pair of lock screws, the shield plate and the cable retainer are covered, and finally, Since the cable connection can be used by simply covering the second cover case, the connection work becomes very easy.

Moreover, since the assembled state of the first cover case and the die cast is held by a pair of lock screws for holding the lock with the mating connector,
Therefore, no special component is required, and cost reduction can be achieved by making one component multi-functional.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an electric connector having a cover case locking mechanism according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an assembled state of a cover case and a shield case of the electric connector of FIG.

3 is a perspective view showing a cable connection state of the electrical connector of FIG. 1. FIG.

FIG. 4 is a perspective view showing a cable connection state of an example of a conventional shielded electrical connector.

[Explanation of symbols]

 10 Insulation Housing 20 Die Casting 21 Side Wall Part 22 Cable Drawout Frame 23 Overhanging Part 24 Lock Screw Through Hole 25 Lock Screw Through Hole 28 Insulation Housing Holding Part 30 Shield Plate 40 First Cover Case 41 Side Wall Part 42 Locking Protrusion 43 First Columnar Part 44 Fourth 2 Pillar 45 Slotted hole 46 Lock screw through hole 50 Second cover case 51 Locking piece 52 Locking opening 60 Lock screw 61 Insulation knob 62 Lock screw part 70 Cable retainer 80 Cable

Claims (2)

(57) [Scope of utility model registration request] 1. An insulating housing having contacts arranged therein, a shield case and a cover case divided into two for housing the insulating housing, and a pair of lock screws for locking fitting with a mating connector. In a cover case locking mechanism of an electric connector including a lock screw through hole for inserting each lock screw on both sides of the one split shield case and the corresponding one split cover case. It is provided at a position aligned when the two-divided shield case and the corresponding one of the two-divided cover cases are aligned.
The split shield case and the corresponding one of the two split cover cases are arranged such that their split surfaces are on the same side, and the one split shield case is the corresponding one of the split cover cases. The lock screws are shaped so that they can be combined with each other by being fitted exactly inside, and the lock screws are aligned in the state where the one split shield case and the corresponding one split cover case are combined. The lock screws retain the combined state of the one split shield case and the corresponding one split cover case by inserting the lock screws into the through holes. One of the two-part split shield case and the corresponding one-part two-part split Cover case locking mechanism of the electrical connector, characterized in that it is prevented from falling out of the cover case. 2. The split cover case is made of a plastic material, and the inner diameter of the lock screw through hole provided in the corresponding one of the split cover cases is slightly smaller than the outer diameter of the lock screw. 2. The cover case locking mechanism for an electrical connector according to claim 1, wherein the lock screw is made small so that the lock screw can be pressure-inserted into the lock screw through hole.