JP4562298B2 - Connector mis-insertion prevention structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for preventing erroneous insertion when a male port portion of a plug connector is inserted into a female port portion of a receptacle connector.
[0002]
[Prior art]
Conventionally, various methods are known as measures for preventing the plug connector from being erroneously inserted into the receptacle connector. For example, it describes in Unexamined-Japanese-Patent No. 7-153527, utility model registration gazette 2510484, etc.
[0003]
Many of these types of erroneous insertion prevention measures can be broadly divided into the following two patterns. One is a feature in which the shape of the female mouth portion of the receptacle connector is characterized, and the male mouth portion of the plug connector is formed so as to be inserted into the female mouth portion. The other is provided with a female key part in a part of the female mouth part, and a male key part corresponding to the female key part in a part of the male mouth part.
[0004]
7 and 8 show a receptacle C, (D) in which a female key portion 301 is provided in a part of a square cylindrical female mouth 300, and a part of the square cylindrical male mouth 400. Examples of plugs A (B) provided with male key portions 401 corresponding to female key portions 301 are shown. In this case, it can be determined that the plug A cannot be inserted upside down with respect to the receptacle C. In the example of FIG. 8, the positions where the key portions are provided are different. Also in this case, it can be determined that the plug B cannot be inserted upside down with respect to the receptacle D.
[0005]
[Problems to be solved by the invention]
FIG. 9 and FIG. 10 show the combined receptacle C / D in which the female key portion 301 is not provided in the female mouth portion 300. If plug A or plug B is to be inserted upside down into the combined receptacle C / D, it cannot be determined that the insertion is impossible. Therefore, there arises a problem of forcibly inserting the plug A or B into the dual-purpose receptacle C / D. Actually, the internal housing can not be inserted and cannot be inserted, but for example, the user assumes that there is no contradiction in the shape of each other's mouth, so that it can be inserted. As a result, the terminal may be bent or damaged in order to forcefully insert it with force.
[0006]
Therefore, the problem of the present invention is that it is possible to easily determine the normal insertion direction that does not turn upside down by visual observation, and even in the case of including a dual-purpose receptacle, it is possible to determine in the same manner. An object of the present invention is to provide a connector misinsertion prevention structure that can reliably protect the connector.
[0007]
[Means for Solving the Problems]
The present invention provides a structure for preventing erroneous insertion of a plug connector with respect to a receptacle connector, wherein the receptacle connector includes a receptacle shell formed with a substantially square tubular female port, and the plug connector includes the female port. A plug shell formed with a substantially square tube-shaped male mouth portion to be inserted into the portion, and the female mouth portion is formed by deforming two adjacent corner portions of the square tube shape into different shapes. A first female key part and a second female key part are provided, and the male mouth part has two rectangular corners adjacent to the first female key part and the second female key part. It was set as the structure by which the 1st male type key part and the 2nd male type key part corresponding to each part were provided.
[0008]
In the present invention, a first female key portion and a second female key portion that are deformed into different shapes are provided in the female mouth portion, and a first male key portion and a second male key corresponding thereto are provided. The part is provided in the male mouth. Accordingly, it is possible to easily determine visually whether the insertion of the male mouth portion with respect to the female mouth portion is reversed left and right and / or upside down.
[0009]
Here, the first female key portion may be formed by one slope having a corner portion chamfered, and the second female key portion may be formed by one slope and a plane continuous to the slope. . If comprised in this way, the shape of a 1st female type | mold key part and a 2nd female type | mold key part is simple, and manufacturability is good. Furthermore, since the key portions have different shapes, it can be easily determined not to insert them incorrectly.
[0010]
It is desirable that the second female key part protrudes more inside the female mouth than the first female key part. By the protrusion of the second female key portion, only the male mouth portion having the second male key portion corresponding to the second female key portion can be inserted into the female mouth portion.
[0011]
In the present invention, another receptacle connector in which the relative positions of the first female key portion and the second female key portion of the receptacle connector are interchanged with each other, and the first male key portion and the second male key of the plug connector. It can also be constituted by another plug connector in which the relative positions of the parts are interchanged with each other. The same effect as described above can be obtained even if another receptacle connector and another plug connector in which the key portions are replaced with each other are employed as a set.
[0012]
In the present invention, the second female key portion of the receptacle connector is formed by an inclined surface having the same inclination angle as the first female key portion, and is symmetrical with respect to the bisector of the female mouth portion. The dual-purpose receptacle connector may be included. When the dual-purpose receptacle connector is employed, two types of plug connectors including another plug connector in which the key portions are replaced with each other can be used for the dual-purpose plug connector.
[0013]
The female receptacle of the dual-purpose receptacle connector can be inserted into both the male connector of the plug connector and the male connector of the other plug connector, and cannot be inserted upside down. It is desirable to have a shape.
[0014]
Furthermore, it is desirable that the female port portion of the receptacle connector and the male port portion of the plug connector are formed of a conductive metal material and also serve as a shield for the connector. Therefore, in the state which inserted the male type | mold mouth part in the female type | mold mouth part, it mutually contacts and is electrically connected.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0016]
FIG. 1 (a) shows the female mouth of the receptacle connector, and FIG. 1 (b) shows the male mouth of the plug connector. 2A shows a front view of the female mouth, and FIG. 2B shows a front view of the male mouth.
[0017]
The receptacle connector R includes a receptacle shell RS in which a substantially square cylindrical female mouth portion 10 is formed, and the plug connector P is a substantially square cylindrical male mouth portion 20 inserted into the female mouth portion 10. The plug shell PS is formed. In the receptacle connector R, a plate-like contact support member 15 is provided that is positioned at substantially the center of the female mouth 10. A plurality of female contacts 16 are provided side by side on the surface of the contact support member 15. Thus, a space 17 necessary for inserting the male mouth 20 is formed between the contact support member 15 and the female mouth 10.
[0018]
In the plug connector P, a plate-like contact support member 25 located on one side of the male mouth portion 20 is provided. A plurality of male contacts 26 are provided side by side on the surface of the contact support member 25. Thus, an entry space 27 necessary for the contact support member 15 in the female mouth portion 10 to enter is formed between the contact support member 25 and the male mouth portion 20.
[0019]
As shown in FIG. 2 (a), the female mouth portion 10 includes a first female key portion 11 in which two corner portions adjacent to each other in a square tube shape are transformed into different shapes, and a second female die. A key portion 12 is provided. The male mouth portion 20 includes two first corner portions 21 and 21 corresponding to the first female key portion 11 and the second female key portion 12, respectively, at two corner portions adjacent to each other in a square tube shape. A two-male key portion 22 is provided.
[0020]
The first female key portion 11 of the receptacle connector R is formed by one inner inclined surface 11a having a chamfered corner portion, and the second female key portion 12 includes one inner inclined surface 12a and the inner inclined surface 12a. It is formed by an inner plane 12b continuous with the slope 12a. The inclination angle of the slope 11a forming the first female key portion 11 is set to about 45 degrees. The inclined surface 12a forming the second female key portion 12 is set to an inclination angle of around 60 degrees, and the flat surface 12b is formed on a flat surface having no inclination.
[0021]
The first male key portion 21 of the plug connector P is formed by one outer slope 21a having a chamfered corner portion, and the second male key portion 22 is formed by one outer slope 22a and the outer slope 22a. It is formed by an outer flat surface 22b continuous to the inclined surface 22a. The inclination angle of the slope 21a forming the first male key portion 21 is set to around 45 degrees. The slope 22a forming the second male key portion 22 is set to an inclination angle of around 60 degrees, and the flat surface 22b is formed on a flat surface without inclination.
[0022]
However, the male port 20 of the plug connector P is inserted into the female port 10 of the receptacle connector R. Therefore, the contour of the outer peripheral surface of the male mouth portion 20 is set smaller than the contour of the inner peripheral surface of the female mouth portion 10. If it is too small, the outer peripheral surface of the female mouth part 10 and the outer peripheral surface of the male mouth part 20 do not come into close contact with each other. Therefore, both are set to the magnitude | size which the outer peripheral surface and inner peripheral surface contact closely.
[0023]
The female mouth portion 10 of the receptacle connector R and the male mouth portion 20 of the plug connector P are formed of a conductive metal material and also serve as a shield for the connector. Therefore, in a state where the male mouth portion 20 is inserted into the female mouth portion 10, they contact each other and are electrically connected (as a ground).
[0024]
As can be understood from FIG. 2A, the second female key portion 12 protrudes to the inside of the female mouth portion 10 from the first female key portion 11. This is because only the male mouth portion 20 having the second male key portion 22 corresponding to the second female key portion 12 is inserted into the female mouth portion 10 by the protruding portion 12 c of the second female key portion 12. This is to enable insertion.
[0025]
In this embodiment, the female mouth part 10 is provided with a first female key part 11 and a second female key part 12 which are deformed into different shapes, and a first male key part 21 corresponding to them. And the second male key portion 22 are provided in the male mouth portion 20. Therefore, it can be easily determined by visual observation whether the male mouth portion 20 is inserted in the female mouth portion 10 in the left-right direction or the upside-down direction. Thereby, protection of a connector, especially protection of female contact 16 and male contact 25 can be aimed at.
[0026]
3 (a) and 3 (b) are front views similar to FIG. 2 showing another embodiment of the present invention. In this embodiment, another receptacle connector R1 in which the relative positions of the first female key portion 11 and the second female key portion 12 of the receptacle connector are interchanged with each other, the first male key portion 21 of the plug connector, and the first The two male key portions 22 are configured with another plug connector P1 in which the relative positions are interchanged with each other.
[0027]
Thus, even if another receptacle connector R1 and another plug connector P1 whose key portions are interchanged with each other are adopted as a set, there is essentially no difference from the previous embodiment. Therefore, also in the connector which concerns on this embodiment, the effect similar to the above is acquired.
[0028]
Further, even if this other plug connector P1 is to be inserted into the other receptacle connector R shown in FIG. 2, the first male key portion 21 hits the second female key portion 12 as shown in FIG. It becomes impossible to insert. From the above, the receptacle connector R and the plug connector P shown in FIGS. 1 and 2 are used on the main body side of the personal computer system, for example, and the receptacle connector R1 and the plug connector P1 shown in FIG. 3 are used on the peripheral device side. be able to. Of course, the reverse is also possible. However, it is preferable to use them in any case.
[0029]
FIG. 4 is a front view showing still another embodiment of the present invention. In this embodiment, the second female key portion 12 of the female mouth portion 10 is formed by an inclined surface 12d having the same inclination angle as the first female key portion 11 and is bisected by the female mouth portion 10. It is configured to include a dual-purpose receptacle connector R2 formed in line symmetry with respect to a line 30 (shown by a one-dot chain line in the figure).
[0030]
As described above, when the dual-purpose receptacle connector R2 is adopted, as shown in FIG. 4, two types of plugs including another plug connector P1 in which the first male key portion 21 and the second male key portion 22 are interchanged with each other are provided. The connectors P and P1 can be used for the dual-purpose receptacle connector R2.
[0031]
The female port 10 of the dual-purpose receptacle connector R2 can be inserted into both the male port 20 of the plug connector P and the male port 20 of another plug connector P1, and as shown in FIG. However, the shape cannot be inserted upside down. That is, the corner portions 23 and 24 of the plug connector P and the other plug connector P1 are not chamfered against the first female key portion 11 and the second female key portion 12 of the dual-purpose receptacle connector R2, and the upside down insertion is performed. Is impossible.
[0032]
In the above embodiment, an example in which the present invention is applied to a receptacle connector and a plug connector has been described, but the present invention can also be applied to other connectors having mating counterparts.
[0033]
【The invention's effect】
As described above, according to the erroneous insertion prevention structure of the connector according to the present invention, it is possible to easily determine the normal insertion direction that is not upside down by visual inspection, and it is possible to determine the same even when a dual-purpose receptacle is included. In this way, an excellent effect is obtained that the connector constituent members such as terminals can be reliably protected.
[Brief description of the drawings]
FIG. 1 is a perspective view of a main part showing an embodiment of the present invention.
FIG. 2 is a front view of an essential part showing an embodiment of the present invention. FIG. 3 is a front view of an essential part showing another embodiment of the invention. FIG. 4 is a still further embodiment of the invention. FIG. 5 is a diagram illustrating the operation of the embodiment of the present invention. FIG. 6 is a diagram illustrating the operation of the embodiment of the present invention. FIG. 7 is a diagram illustrating the conventional example. FIG. FIG. 9 is an explanatory diagram showing a conventional example. FIG. 10 is an explanatory diagram showing a conventional example.
10 female mouth part 11 first female key part 12 second female key part 12a slope 12b plane 12c projecting part 15 contact support member 16 female contact 17 space 20 male mouth part 21 first male key part 22 second Male key portion 22a Slope 22b Plane 25 Contact support member 26 Male contact 27 Entrance space R Receptacle connector R1 Another receptacle connector R2 Dual receptacle connector P Plug connector P1 Another plug connector

Claims (5)

A structure for preventing erroneous insertion of a plug connector with respect to a receptacle connector,
The receptacle connector includes a receptacle shell formed with a substantially square cylindrical female mouth,
The plug connector includes a plug shell formed with a substantially square cylindrical male port inserted into the female port.
The female mouth portion is provided with a first female key portion and a second female key portion obtained by deforming two adjacent corner portions of a rectangular tube shape into different shapes,
In the male mouth portion, a first male key portion and a second male key corresponding to the first female key portion and the second female key portion respectively at two corner portions adjacent to each other in a square tube shape. Part is provided,
Connector mis-insertion prevention structure.   The first female key portion is formed by one slope having a chamfered corner portion, and the second female key portion is formed by one slope and a plane continuous to the slope. 1. A structure for preventing erroneous insertion of the connector according to 1.   The structure for preventing erroneous insertion of a connector according to claim 1 or 2, wherein the second female key part protrudes more inside the female mouth than the first female key part.   Another receptacle connector in which the relative positions of the first female key portion and the second female key portion of the receptacle connector are interchanged; and the relative positions of the first male key portion and the second male key portion of the plug connector. The structure for preventing erroneous insertion of a connector according to any one of claims 1 to 3, further comprising another plug connector in which the two are interchanged with each other.   The structure for preventing erroneous insertion of a connector according to claim 1, wherein the female-type mouth portion of the receptacle connector and the male-type mouth portion of the plug connector are formed of a conductive metal material and also serve as a shield for the connector.

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