JP3004347B2 - connector - Google Patents

Description

The present invention relates to a connector and, in order to provide a highly reliable connection / fixing structure, has at least one set of jack portions having a male screw portion formed in the vicinity of a distal end portion thereof and having a shape capable of fitting with each other. And a central member provided with a plug portion, rotatably attached to a substantially cylindrical fixing member in which a female screw portion having a shape capable of being screwed to a male screw portion of the central member is formed near the distal end portion thereof. In a connector in which a plug member corresponding to each jack portion is connected and fixed by screwing the fixing member to a center member of another connector having the same structure as the connector, in the vicinity of the distal end portion of the center member Is cut away from the distal end portion of the center member toward the base end portion at least deeper than the male screw portion, and a small number of shapes corresponding to positions symmetrical to each other with respect to the axis of the center member. Forming at least one set of protrusions and recesses, fitting the protrusions and recesses of the center member with the recesses and protrusions of the other connector, and interfering the fixing member with the male screw portion of the center member. And can be screwed to the center member of the other connector.

TECHNICAL FIELD The present invention relates to a connector mainly used for making an electrical connection.

A connector used for mechanically or electrically connecting a conductor to another conductor or a terminal of a device generally includes a male connector having a plurality of connection terminals (convex) and a plurality of connectors at corresponding positions. A configuration is adopted in which a female connector having connection terminals (concave shape) is fitted and screwed. However, in special cases, the same number of connection terminals (convex) and connection terminals (concave) are arranged at symmetrical positions with respect to the center of the connector. (Hereinafter, sometimes referred to as a non-polar connector) may be used.
In such a non-polar connector, it is desired to provide a highly reliable connection / fixing structure.

2. Description of the Related Art FIG. 2 is a view for explaining a conventional structure of a nonpolar connector as described above. The connector 21a includes a substantially cylindrical central member 22a and a substantially cylindrical fixing member 23a. A pair of connection terminals 26a and connection terminals 27a having a shape that can be fitted to each other are disposed at the distal end of the center member 22a at positions symmetric with respect to the axis of the center member 22a. In the vicinity of the distal end portion of the central member 22a, a male screw portion 28a is formed over the entire periphery thereof, and an outer ring portion 29a protruding outward is formed on the base end side. Fixing member 2
3a is provided so as to be slidable in the axial direction of the central member 22a and rotatable about the axial center. Fixing member
An inner ring portion 30a protruding inward is formed on the base end side of 23a, and a female screw portion 31a having a shape capable of being screwed into the male screw portion 28a of the central member 22a is formed inside near the distal end portion.

This connector 21a can be fitted and fixed to another connector 21b having the same structure. First, the fixing member 23b of the other connector 21b is rotated to be positioned on the base end side of the male screw portion 28b of the center member 22b, and the connection terminal 26a of the connector 21a is fitted into the connection terminal 27b of the other connector 21b, The connection terminal 26b of the other connector 21b is fitted into the connection terminal 27a of the connector 21a. And a fixing member for the connector 21a.
The inner ring portion 30a of the fixing member 23a is connected to the outer ring portion 2a of the central member 22a by screwing the 23a to the center member 22b of the other connector 21b.
9a, the connector 21a and the connector 21b are integrally fixed, and the connection terminals 26a and 27b and the connection terminals 26b and 2
7a is fixed in a conductively connected state.

However, according to the above-described conventional structure, as shown in FIG. 3, the fixing member 23b of the other connector 21b is located relatively far from the distal end. , Connector 21a
When the fixing member 23a of the connector 21b is screwed into the center member 22b of the connector 21b, the distal ends of the fixing member 23a of the connector 21a and the fixing member 23b of the connector 21b abut, and the connector 21a
The inner ring portion 30a of the fixing member 23a and the outer ring portion 29a of the center member 22a are fixed with a gap. In this state, since the center member 22a is not completely fixed, the respective connection terminals 26a and 26b are
There is a problem that the connection is not securely made to the a and 27b, and a connection failure may occur.

Further, the rotational force when the fixing member 23a of the connector 21a is screwed into the central member 22b of the connector 21b is transmitted to the central members 22a and 22b by friction or the like, and the rotational force is transmitted to the respective connection terminals 26a and 27b and the connection terminals. There is also a problem that this acts on the terminals 26b and 27a, which may adversely affect the connection characteristics.

The present invention has been made in view of such a point,
It is an object of the present invention to provide a connector connection / fixing structure with reliable connection and high reliability.

Means for solving the problem A male screw portion is formed near the distal end portion, and a central member having at least one set of a jack portion and a plug portion having a shape capable of fitting with each other is provided near the distal end portion. A generally cylindrical fixing member having a female screw portion capable of being screwed to the male screw portion of the center member is rotatably mounted, and the fixing member is screwed to a center member of another connector having the same structure as the connector. By doing so, the respective jack portions and the corresponding plug portions are connected and fixed. A part of the central member near the distal end is partially cut away from the distal end of the central member toward the proximal end at least deeper than the male screw portion, so that the central member is symmetrical with respect to the axis of the central member. At least one set of convex portions and concave portions having opposing shapes are formed. Then, the axial dimension of the central member of the male screw portion formed on the central member is less than 1/2 of the protrusion dimension of the convex portion of the central member, and the fixing member is formed on the convex portion of the central member. It is configured to engage with the central member at a position that does not reach the male screw portion.

In addition, for example, the connector can be used as an electrical connector by using the jack portion as a connection terminal (concave shape) and the plug portion as a connection terminal (convex shape).

Operation When two connectors to which the present invention is applied are prepared and their respective center members are fitted together, the male screw portions formed at the tips of the respective protrusions enter deeper than the corresponding male screw portions of the corresponding center member. Then, by screwing one of the fixing members to the other central member, the one fixing member is engaged with the one central member, and the plug portions corresponding to the respective jack portions are securely connected. It is fixed in the state where it was set. The fixing member used for fixing does not interfere with the male screw portion formed on the center member to which the fixing member is attached, and since the fixing members do not abut each other, the fixing is always secure. You can get the status. And when the fixed member is rotated and screwed into the other central member, the rotational force acting on the central member due to friction or the like is:
Since the convex portion of one central member and the convex portion of the other central member adjacent thereto are received by interfering with each other, the force acting on the jack portion and the plug portion is reduced, and the occurrence of poor connection due to this is also reduced. Less.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 (A) and 1 (B) are cross-sectional views showing one embodiment of the present invention, wherein (A) shows a state before fitting and (B) shows a state after fitting. In the figure, reference numeral 1a denotes a connector to which the present invention is applied, and the connector 1a includes a center member 2a and a fixing member 3a. The central member 2a is formed of a substantially columnar member, and a half of the central member 2a near the distal end is cut away from the distal end of the central member 2a toward the proximal end. A pair of semi-cylindrical convex portions 4a and concave portions 5a are formed at positions symmetrical to each other with respect to the axis. A connection terminal (plug portion) 6a is arranged in a concave portion 5a formed in the central member 2a, and a connection terminal (jack portion) 7a is arranged in a convex portion 4a. These connection terminals
The connection terminal 6a and the connection terminal 7a have opposing shapes. For example, the connection terminal 6a is a protruding rod-shaped conductor, and the connection terminal 7a is a resiliently deformable concave conductor. In the vicinity of the tip of the semi-cylindrical convex portion 4a of the center member 2a, a male screw portion 8a having a screw center on the axis of the center member 2a is formed. Also, the center member 2a
An outer ring portion 9a that protrudes outward is formed on the base end side.

The fixing member 3a is a substantially cylindrical member, and the fixing member 3a
An inner ring portion 10a protruding inward is formed on the base end side of the base member, and a semi-cylindrical convex portion 4a of the center member 2a is formed near the front end thereof.
Female screw portion 11 which can be screwed into male screw portion 8a formed in
a is formed. The fixing member 3a is provided on the center member 2a so as to be slidable in the axial direction of the center member 2a and rotatable about the axis. When the fixing member 3a is slid toward the distal end, the outer ring portion 9a of the center member 2a and the inner ring portion 10a of the fixing member 3a come into contact with each other.

The length (axial direction) of the male screw portion 8a of the center member 2a is less than l / 2, where l is the projection length of the semi-cylindrical convex portion 4a or the depth (fitting stroke length) of the concave portion 5a. The fixing member 3a is configured such that the outer ring portion 9a of the center member 2a and the inner ring portion 10a of the fixing member 3a abut before the fixing member 3a reaches the male screw portion 8a of the center member 2a.

1b is another connector having the same structure as the connector 1a. In order to distinguish the connector 1a from the connector 1a, only the numbers among the symbols assigned to the respective portions of the connector 1a are made to correspond to each other, and the symbol b for identification is given. Connector 1a and other connector 1b
When fitting / fixing, first, the semi-cylindrical convex portions 4a, 4b of the central member 2a and the central member 2b are
Insert into 5b. At this time, the respective connection terminals 6a, 6b are fitted to the corresponding connection terminals 7a, 7b, and an electrical connection is made.

In this state, the semi-cylindrical recess of the other connector 1b
The male screw portion 8b formed on the 4b has entered inside the male screw portion 8a formed on the semi-cylindrical convex portion 4a of one connector 1a, and rotates the fixing member 3a to rotate the semicircle of the central member 2b. A female screw portion 11a formed on the fixing member 3a is screwed into a male screw portion 8b formed on the columnar convex portion 4b. This allows
As shown in FIG. 1 (B), the inner ring portion 10a formed on the fixing member 3a abuts on the outer ring portion 9a formed on the central member 2a, and the connector 1a and the connector 1b are integrally formed. Fixed. Further, if the fixing member 3b is similarly screwed to the center member 2a, the fixing can be performed more reliably.

According to the embodiment, when the respective center members 2a, 2b are fitted, the respective semi-cylindrical convex portions 4a, 4b correspond to the corresponding concave portions 5a,
5b, the male member 8a, 8b formed at the tip of each semi-cylindrical convex portion 4a, 4b corresponds to the corresponding central member 2a,
It penetrates deeper than the external thread portions 8a and 8b of 2b. Then, by screwing one of the fixing members 3a to the other central member 2b, the inner ring portion 10a of the one fixing member 3a and the outer ring portion 9a of the one central member 2a abut, and the respective connection members are connected. Terminal 6
a, 6b are fixed in a state where they are securely connected to the corresponding connection terminals 7a, 7b. The fixing member 3a used for fixing does not interfere with the male screw portion 8a formed on the central member 2a to which the fixing member 3a is attached, and the respective fixing members 3a and 3b can abut each other. Since there is no fixed state, it is possible to always obtain a reliable fixed state.

Further, when the fixing member 3a is rotated and screwed into the other central member 2b, the rotational force transmitted to the central members 2a and 2b by friction or the like is equal to the semi-cylindrical convex portion 4a of the one central member 2a. The semi-cylindrical projections 4b of the other central member 2b adjacent to the first and second central members 2b are received by interfering with each other, so that the forces acting on the connection terminals 6a, 6b and the connection terminals 7a, 7b are reduced, thereby resulting in poor connection. Occurrence is reduced.

In the above-described embodiment, a pair of semi-cylindrical convex portions 4a and concave portions 5a are formed in the vicinity of the distal end portion of the center member 2a, but the present invention is not limited to this. A plurality of sets of protrusions and recesses having shapes opposite to each other with respect to the axis of the center member can be formed.

Further, in the embodiment shown in FIG. 1, the connection terminal 7a is disposed on the semi-cylindrical convex portion 4a of the center member 2a, and the connection terminal 6a is disposed on the concave portion 5a. The convex portion 4a
The connection terminal 6a and the connection terminal 7a can be arranged inside the device. Also, in the above description, the case where the present invention is applied to an electrical connector is described.
The present invention is of course not limited to this, for example,
By providing an optical fiber assembly in the terminal instead of the connection terminal, an optical connector can be obtained.

Effect of the Invention Since the present invention is configured as described in detail above, when the fixing member of one connector is screwed into the center member of the other connector, the one fixing member interferes with the other fixing member. Therefore, reliable fixing can always be realized, and the rotational force at the time of screwing the fixing member is less likely to directly act on the jack portion and the plug portion, thereby preventing poor connection due to this. Thus, there is an effect that a highly reliable connector with reliable connection can be provided.

[Brief description of the drawings]

1 (A) and 1 (B) are cross-sectional views for explaining one embodiment of the present invention, wherein (A) shows a state before fitting and (B) shows a state after fitting. FIG. 2 is a cross-sectional view for explaining the prior art, and FIG. 3 is an explanatory view of a problem of the prior art. 1a, 1b ... connector, 2a, 2b ... central member, 3a, 3b ... fixed member, 4a, 4b ... convex portion, 5a, 5b ... concave portion, 6a, 6b ... connection terminal (convex), 7a, 7b: Connection terminal (concave), 8a, 8b: Male thread, 9a, 9b: Outer ring, 10a, 10b: Inner ring, 11a, 11b: Female thread.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shuji Arima 5-5-23 Osaki, Shinagawa-ku, Tokyo Inside Hirose Electric Co., Ltd. (72) Inventor Tateomi Matsumoto 5-5-23 Osaki, Shinagawa-ku, Tokyo Hirose Electric Co., Ltd. (56) References JP-A-59-139580 (JP, A) JP-A 64-16081 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 13/622 H01R 13/642 G02B 6/36

Claims (1)

(57) [Claims] A central member having a male screw portion (8a) formed in the vicinity of its distal end and having at least one set of a jack portion (7a) and a plug portion (6a) having shapes that can be fitted to each other. A substantially cylindrical fixing member (3a) having a female screw part (11a) formed in the vicinity of the tip of the central part (2a) and capable of screwing into the male screw part (8a) of the center member (2a) is rotatable. To another connector (1a) with the same structure as the connector (1a).
By screwing the fixing member (3a) to the center member (2b) of b), the respective jack portions (7a, 7b) and the corresponding plug portions (6a, 6b) are connected and fixed. In the connector, a portion of the central member (2a) near the distal end is cut away from the distal end of the central member (2a) toward the proximal end at least deeper than the male screw portion (8a). At least one set of a convex portion (4a) and a concave portion (5a) having a shape opposed to each other with respect to the axis of the member (2a) are formed, and the convex portion (4a) of the central member (2a) is formed. The jack section (7
a), the plug portion (6a) is disposed in the concave portion (5a), and the axial dimension of the central member (2a) of the male screw portion (8a) formed in the central member (2a) is determined. The projection (4a) of the center member (2a) is less than 1/2 of the protrusion dimension, and the projection (4a) and the recess (5a) of the center member (2a) and the recess of the other connector (1b) (5b) and the convex part (4b) are fitted, and the female screw part (11a) of the fixing member (3a) is formed on the convex part (4a) of the central member (2a).
The connector is configured to be screwed into the male screw portion (8b) of the center member (2b) of the other connector (1b) at a position that does not reach.