JP2599849Y2 - 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 so-called screw-type connector in which both connector housings are fitted by tightening bolts to nuts.

[0002]

2. Description of the Related Art In a connector having a large number of terminals, especially, there is a situation in which the fitting force of both male and female connector housings becomes large and a large amount of force is required for attaching and detaching. Screw-type connectors have been provided. In this connector, for example, a bolt is rotatably provided in a female connector housing, a nut is provided in a male connector housing, and the connector housing is fitted by tightening the bolt to the nut.

[0003] By the way, the work of tightening bolts is performed using a tool such as an impact wrench, for example. If the bolts are tightened too much, there is a problem that the bolts are broken or the housing is damaged. Therefore, in recent years, the bolt portion of the bolt is partially provided at the tip end portion of the bolt shaft, and when the two connector housings are completely fitted, the bolt portion is pulled out from the nut and idles, thereby tightening the bolt. A configuration for preventing overshoot has been considered (for example, JP-A-63-13283).

[0004]

However, in the above-described structure in which the bolts run idle when the two connector housings are completely fitted, the bolts will not be over-tightened, but the tightening work by the impact wrench will be difficult. It is difficult for a person to understand the tightening condition of the bolts, and there is a problem that the tightening operation is stopped in a so-called semi-fitted state in which the two connector housings are not in a completely fitted state, resulting in insufficient tightening.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a configuration in which both connector housings are fitted by tightening a bolt to a nut. To provide a connector that can be known.

[0006]

In order to achieve the above object, a connector according to the present invention is provided with a metal bolt on one connector housing and a nut on the other connector housing, and the bolt is connected to the nut. By tightening, the two connector housings are displaced in the direction of connection with each other and fitted together,
The other connector housing is provided with a conductor which comes into contact with the bolt in an electrically connected state with the bolt in a state where both connector housings are completely fitted, and a conductor between the conductor and the bolt which is connected to the conductor. The present invention is characterized in that a connection terminal for fitting detection for detecting the presence or absence of conduction is provided.

[0007]

According to the connector of the present invention having the above configuration,
By tightening the bolt to the nut, the two connector housings are displaced in the direction of connection with each other and fitted, but when the fitting of the two connector housings is completed, the bolt provided on one connector housing is replaced with the other. It comes into electrical contact with the conductor provided on the connector housing. Therefore, it is possible to detect whether or not both connector housings have been completely fitted by detecting the presence or absence of conduction between the fitting detection connection terminal and the bolt side by the detection circuit.

[0008]

[Effect of the invention] As described above, according to the connector of the invention,
A structure in which both connector housings are fitted by tightening a bolt provided on one connector housing to a nut provided on the other connector housing, wherein the two connector housings are fitted with the other connector housing. A conductor is provided which comes into contact with the bolt in a completed state and is in an electrically connected state with the bolt, and a connection terminal for fitting detection for detecting the presence or absence of conduction between the conductor and the bolt is provided. It is possible to easily know the fitting state of the connector housing, and as a result, there is an excellent effect that it is possible to prevent not only excessive bolt tightening but also insufficient bolt tightening during bolt tightening work.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. Here, FIG. 1 shows a state before the two connector housings 1 and 2 are fitted, and FIG. 3 shows a state where the two connector housings 1 and 2 are completely fitted. FIG. 2 is an enlarged view of part A of FIG.

As shown in FIGS. 1 and 3, the female connector housing 1, which is one of the connector housings, has a substantially rectangular block shape as a whole and includes a plurality of female terminals (not shown) therein. The upper surface of the female connector housing 1 is covered with a rubber cover 3, for example.

A bolt insertion hole 1a is formed in the center of the female connector housing 1 so as to penetrate vertically and a metal bolt 4 is provided in the bolt insertion hole 1a. The bolt 4 has a threaded portion 4a formed only at the tip end of the shaft portion, and is rotatable and reciprocable to the female connector housing 1 with the bolt head 4b protruding from the upper surface of the female connector housing 1. It is provided so that the moving force in the direction (vertical direction in the figure) is transmitted. The tip of the bolt 4 (the lower part of the screw portion 4a) has a sharp shape.

On the other hand, the male connector housing 2, which is the other connector housing, has a rectangular cylindrical hood 2b having an open upper surface on the upper part of a rectangular base 2a. The hood portion 2b is formed to have a size in which the female connector housing 1 fits. Further, inside the male connector housing 2, a plurality of male terminals (not shown) corresponding to the female terminals are provided so as to be supported by the base 2a.

At the center of the male connector housing 2, a boss 5 having a through hole 5a penetrating vertically is provided.
Are integrally formed projecting upward from the base 2a, and a metal nut 6 screwed to the bolt 4 is formed in the boss 5.
Are integrally provided by, for example, insert molding. By tightening the screw portion 4a of the bolt 4 to the nut 6, the two connector housings 1
And 2 are displaced from each other in the coupling direction (vertical direction) and fitted as shown in FIG. When the two connector housings 1 and 2 are fitted together, each of the male and female terminals is connected and electrically connected.

In the boss 5 of the male connector housing 2, a conductor 7 is provided slightly below the nut 6, as shown in FIG. This conductor 7
Is provided with a metal piece having a substantially inverted U-shaped contact portion 7a and supported by a base 2a by a mounting piece 7b provided integrally with the contact portion 7a. As described later, this conductor 7
The bolt 4 is provided at a position where the tip of the bolt 4 comes into contact when the connector housings 1 and 2 are completely fitted with each other by tightening the bolt 4 to the nut 6.

Grooves 5b and 5c are formed in the inner wall of the through hole 5a so as to extend from the conductor 7 to the lower end. Of these, a fitting detection connection terminal 8 is provided integrally with the conductor 7 in the right groove portion 5c. Further, in this embodiment, a nut-side connection terminal 9 is provided in the left groove portion 5b so as to be symmetrical with the connection terminal 8 for fitting detection. The upper end of the nut-side connection terminal 9 is in contact with the nut 6.

In this state, when the connection between the connector housings 1 and 2 is not completed as shown in FIG. 1, there is no conduction between the nut 6 and the conductor 7, and as shown in FIG. When the lower surface of the female connector housing 1 is in contact with the upper surface of the base 2a of the male connector housing 2, that is, when the two connector housings 1 and 2 are completely fitted, the bolt 4 penetrating the nut 6 comes into contact with the conductor 7. ,
The conductor 9 and the conductor 7 are electrically connected via the nut 6 and the bolt 4.

In the above configuration, the operation of fitting the two connector housings 1 and 2 is performed as follows. That is, first, the female connector housing 1 is lightly fitted into the male connector housing 2 from above, so that the nut 4 can be screwed with the screw portion 4 a of the bolt 4. Also,
At the same time, a detection circuit (not shown) is connected in advance to the fitting detection connection terminal 8 and the nut-side connection terminal 9 via the lead wires 10 and 10, respectively. As this detection circuit, general-purpose instruments such as a tester, an extremely simple circuit in which a power supply such as a battery and a lamp or buzzer are connected in series,
Various types can be used. In other words, any type can be used as long as it can detect the presence or absence of conduction between the fitting detection connection terminal 8 and the nut-side connection terminal 9 and notify the worker of it. good.

Then, the operator performs an operation of fastening the bolt 4 to the nut 6 using a tool such as an impact wrench. As a result, as described above, the two connector housings 1 and 2 are displaced in the connecting direction and fitted together. At this time, until the fitting of the two connector housings 1 and 2 is completed. When the bolt 4 is tightened,
As shown in FIG. 3, the bolt 4 comes into contact with the conductor 7 to be in an electrical connection state, and the connection between the fitting detection connection terminal 8 and the nut-side connection terminal 9 is conducted via the bolt 4, and the conduction is established. The detection circuit detects.

If the operator stops the tightening operation based on the detection of the detection circuit, the bolt 4 is not overtightened and there is no insufficient tightening. The tightening work of the bolt 4 can be completed.

As described above, according to the present embodiment, by connecting the detection circuit to the connection terminal 8 for connection detection and the connection terminal 9 on the nut side, it is determined whether the connector housings 1 and 2 are completely connected. Can be easily detected.
As a result, not only can the bolt 4 be prevented from being excessively tightened, but also the work can be prevented from being stopped in a state where the connector housings 1 and 2 are half-fitted, and the connector housings 1 and 2 can be securely fitted. It is possible to obtain an excellent effect that a completed state can be obtained.

4 to 6 show a second embodiment of the present invention. FIG. 4 shows both connector housings 1 and 2.
FIG. 6 shows a state before the two connector housings 1 are fitted to each other.
FIG. 5 is an enlarged view of part B of FIG. 4.

The second embodiment differs from the first embodiment in that the nut-side connection terminal 9 is not required, and the other parts are the same as those in the first embodiment. Since they are the same, the same portions are denoted by the same reference numerals as in the first embodiment, and detailed description is omitted.

In this case, as shown in FIG. 6, when the connector housings 1 and 2 are completely fitted, the bolts 4 come into contact with the conductors 7 so that the conductors are electrically connected to each other. In the example, as shown in FIG. 6, at the time of the fitting operation of the two connector housings 1 and 2, one of the probes 11 a of the tester 11 for detecting the presence or absence of continuity is fitted and detected via the lead wire 10. Connection terminal 8
And the other probe 11b is connected to the bolt head 4b.

In this state, when the fitting of the two connector housings 1 and 2 as shown in FIG. 4 is not completed, there is no conduction between the fitting detecting connection terminal 8 and the bolt head 4. In a state where the connector housings 1 and 2 are completely fitted as shown in FIG. 6, the leading end of the bolt 4 comes into contact with the conductor 7 so that the connection between the fitting detection connection terminal 8 and the bolt head 4 is conducted. It becomes.

Therefore, similarly to the first embodiment, it is possible to easily detect whether or not both the connector housings 1 and 2 have been completely fitted. As a result, it is possible to prevent the work from being stopped in the half-fitted state of the two connector housings 1 and 2, and to obtain an excellent effect that the two connector housings 1 and 2 can be surely brought into the fitting completed state. Can be done.

In each of the above-described embodiments, whether or not the mating is completed is detected when the connector housings 1 and 2 are mated. It is also possible to check whether or not the matching is completed. In addition, in the state where both connector housings are completely fitted, a structure in which the screw portion of the bolt is pulled out from the nut and idles may be employed together. Can be done.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view showing a first embodiment of the present invention and showing a state before fitting of both connector housings.

FIG. 2 is a longitudinal sectional front view showing a partially enlarged view;

FIG. 3 is a longitudinal sectional front view showing a state in which both connector housings are completely fitted.

FIG. 4 is a longitudinal sectional front view of a second embodiment of the present invention, corresponding to FIG. 1;

FIG. 5 is a longitudinal sectional front view showing a partially enlarged view;

FIG. 6 is a longitudinal sectional front view corresponding to FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Female connector housing 2 ... Male connector housing 4 ... Bolt 5 ... Boss part 6 ... Nut 7 ... Conductor 8 ... Connection terminal for fitting detection 9 ... Nut side connection terminal 11 ... Tester

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takahiro Yoneda 2 Takaracho, Kanagawa-ku, Yokohama-shi Nissan Motor Co., Ltd. (56) References JP-A-63-13283 (JP, A) Japanese Utility Model No. 5-77879 (JP) , U) Japanese Utility Model Hei 1-135655 (JP, U) Japanese Utility Model Hei 2-34077 (JP, U) Japanese Utility Model Utility Model 4-127980 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB Name) H01R 13/00-13/72

Claims (1)

(57) [Scope of request for utility model registration] 1. A metal bolt is provided on one connector housing, a nut is provided on the other connector housing, and the bolt is tightened to the nut, so that the two connector housings are displaced from each other in a connecting direction. In the connector housing, a conductor is provided on the other connector housing so as to be brought into electrical contact with the bolt by abutting on the bolt in a state where both connector housings are completely fitted, and connected to this conductor. A connector having a connection terminal for fitting detection for detecting the presence or absence of conduction between the conductor and the bolt.