JPH0722862Y2 - connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a connector including a cylindrical socket connector and a plug connector that are fitted and separated from each other in the axial direction.

"Prior Art" In the conventional connector of this type, when the force of fitting and withdrawing in the axial direction is relatively large, or when a tight fitting state is maintained, the structure is as shown in Figs. 6 and 7. Was there. Although not shown in the figure, the socket connector 11 is provided with a first connector, a circular fitting recess 12 is formed on the front surface thereof, and a pair of protrusions 14 is formed on the outer peripheral surface of the peripheral wall 13 forming the fitting recess 12. And a flange 15 is integrally formed on the outer periphery of the intermediate portion of the socket connector 11 in the axial direction. The front half of the socket connector 11 is inserted into the mounting hole 17 formed in the panel 16, the collar 15 is brought into contact with the panel 16, and the collar 15
Are screwed to the panel 16, for example.

On the other hand, the plug connector 21 is provided with a second contact (not shown) to be coupled to the first contact of the socket connector 11, and the front part of the plug connector 21 is located in the fitting recess 12 of the socket connector 11. It is a fitting portion 22 to be fitted. A coupling nut 23 is coaxially mounted on the outside of the plug connector 21 so as to be axially movable and rotatable, and the coupling nut 23 is biased rearward by a coil spring 24. A pair of spiral grooves 25 is formed on the inner peripheral surface of the coupling nut 23 from the front end surface thereof. Plug connector
A cable 26 connected to the second contact is led out from the rear of 21.

Insert the plug connector 21 into the mating recess 12 of the socket connector 11.
After shallowly fitting the fitting portion 22 of, the coupling nut 23 is rotated while being pushed toward the socket connector 11 side, and the projection 14 and the spiral groove 25 are engaged with each other, so that the plug connector 21 is released as shown in FIG. The fitting portion 22 is fitted into the fitting recess 12 until it moves in the axial direction until the final position, that is, the first contact and the second contact are sufficiently joined. This coupling method is called bayonet coupling.

Due to the effect of the spiral groove 25, the force is reduced as compared with the case where the plug connector 21 is directly coupled to the socket connector 11 from the axial direction. However, in this conventional connector, the projecting length X of the socket connector 11 from the panel 16 is relatively large. That is, this projection length X is at least the sum of the diameter of the projection 14 and the amount of the plug connector 21 fed from the coupling nut 23, and cannot be made too small. Therefore, the gap H between the panel 16 and the other object 27 is larger than the sum of the distance L between the front surface of the plug connector 21 and the back surface of the cable 26 and the protrusion length X, and the socket connector is used at a place where the distance H is small.
It becomes impossible to insert and remove 11 and the plug connector 21.

[Means for Solving the Problems] According to the present invention, not the protrusion but the vertical groove extending in the axial direction is formed on the peripheral wall forming the fitting recess of the socket connector, and the socket connector has the cylindrical fixing portion. A guide groove, which is coaxially and rotatably mounted inside, is formed on the inner peripheral surface of the fixed portion, the guide groove facing the vertical groove from the front end, and a spiral groove continuous with the guide groove. . The plug connector is not provided with a coupling nut, and a protrusion to be engaged with the guide groove and the vertical groove is projected on the outer peripheral surface of the fitting portion.

With this configuration, the fixing portion can be inserted through the panel to be attached, and in that case, the protruding length of the fixing portion can be shortened, and the plug connector can be slightly fitted to the socket connector, By moving, a bond similar to a bayonet bond is obtained by the spiral groove.

[Embodiment] FIG. 1 is an exploded view of an embodiment of the present invention, and FIG. 2 is a front view showing a combination of the socket connector 11 and a fixing portion, and FIG.
The cross-sectional view is shown in the drawing, and the portions corresponding to those in FIG. 6 are denoted by the same reference numerals.

A fitting recess 12 is formed on the front surface of the socket connector 11, and a peripheral wall 13 of the fitting recess 12 is formed with a vertical groove 31 facing the front end substantially parallel to the axis. The socket connector 11 is provided with a first connector (not shown).

The socket connector 11 is coaxially and rotatably attached inside the cylindrical fixing portion 32. In this example, a ring-shaped recess 33 is formed on the inner periphery of the front surface of the fixing portion 32, and correspondingly, a ring-shaped protrusion 34 is integrally formed on the outer periphery of the front end of the socket connector 11, and this ring-shaped protrusion 34 is formed. The socket 35 is rotatably arranged in the ring-shaped recess 33, and a projection 35 is integrally formed on the outer peripheral surface of the rear end of the socket connector 11. The projection 35 locks the rear end surface of the fixing portion 32, and the socket connector 11 is Although it cannot move in the axial direction, it is rotatably mounted in the fixed portion 32.

A guide groove 36 is formed on the inner peripheral surface of the fixed portion 32 so as to face the vertical groove 31 from the front end edge, and a spiral groove 37 is formed in connection with the guide groove 36. A collar 38 is integrally formed near the front end of the fixed portion 32, and a detent 39 is integrally formed on the outer peripheral surface of the fixed portion 32 in front of the collar 38. A mounting hole 17 as shown in FIG. 3 is formed in the panel 16, the front end portion of the fixing portion 32 is inserted into the mounting hole 17, and the panel 16 is sandwiched by the locking portion 41 and the brim 38 to fix the fixing portion. 32 is attached to panel 16. In the illustrated example, a seal ring 42 such as a rubber material is interposed between the panel 16 and the collar 38.

As shown in FIG. 1, the plug connector 21 has no coupling nut attached thereto, and has a pair of protrusions 43 protruding from the front end portion of the outer peripheral surface of the fitting portion 22. In this example, the cable 26 is led out from the rear portion of the outer peripheral surface of the plug connector 21.
Further, as shown in FIG. 4, a seal ring 44 made of rubber or the like can be attached to the outer periphery of the base of the fitting portion 22.

To connect the socket connector 11 and the plug connector 21, the fitting portion 22 is slightly inserted into the fitting recess 12 and the projection 43
Is guided to the vertical groove 31 and the guide groove 36, and is positioned at the beginning of the spiral groove 37. At this time, the first contact of the socket connector 11 and the second contact of the plug connector 21 are not yet in contact with each other, so that they can be lightly inserted. Then, when the plug connector 21 is rotated, the protrusion 43 is guided by the spiral groove 37, thereby pushing the side wall of the vertical groove 31 to move the socket connector 11 coaxially and proceed to the back of the vertical groove 31.
The fitting portion 22 is inserted into the fitting recess 12 as shown in FIG. 5, and the first contact and the second contact are in contact with each other. When the plug connector 21 is coupled to the socket connector 11, the protrusion 43 is positioned by the vertical groove 31 and the spiral groove 37, and the plug connector 21 does not fall out.

At this time, the front ends of the socket connector 11 and the fixing portion 32 elastically contact the seal ring 44, and the one side and the other side of the panel 16 are hermetically shut off from each other. The rotation angle of the plug connector 21 is within the arrow range 45 in FIG.

In order to maintain the initial state before connecting the plug connector 21, that is, the state in which the vertical groove 31 and the guide groove 36 are aligned in the state shown in FIGS. 2 and 4, the socket connector 11 and the fixing portion 32 are kept. The initial position may be held by engaging a part of the concave and convex parts with each other.

[Advantage of Device] As described above, according to the present invention, as can be understood immediately from FIG. 4, the projecting length of the socket connector 11 from the panel 16 can be made smaller than the conventional one, and the plug connector can be used even in a narrow space. The connector can be inserted and removed. Moreover, since the spiral groove 37 is used similarly to the bayonet connection, the socket connector 11 and the plug connector 21 can be reliably connected with a weak force. When the cable 26 is led out from the side surface of the plug connector 21 as in the above example, the tubular portion extending laterally from the plug connector is grasped and the plug connector is held.
21 can be rotated, a large moment can be generated, and insertion / removal operation is facilitated in a small space.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2 is a front view showing its socket connector and a fixing portion, FIG. 3 is a view showing a mounting hole 17 of a panel 16, and FIG. Fig. 5 is a sectional view taken along the line AA, Fig. 5 is a sectional view corresponding to Fig. 4 in a state where a plug connector is fitted in a socket connector, Fig. 6 is a perspective view showing a conventional connector, and Fig. 7 is Fig. 6 Sectional view of the figure,
FIG. 8 is a sectional view corresponding to FIG. 7 in a state where the socket connector and the plug connector are combined.

Claims (2)

[Scope of utility model registration request] 1. A socket connector having a cylindrical outer shape, a longitudinal groove extending axially from the front surface of the fitting recess having a fitting recess formed in the front surface, and a first contact. The socket connector is coaxially and rotatably mounted inside, and a guide groove facing the vertical groove is formed on the inner peripheral surface from the front end thereof, and a spiral groove continuous from the guide groove. At the same time, the cylindrical fixing portion fixed to the panel by the flange portion provided near the front end of the outer peripheral surface, the fitting portion fitted into the fitting recess, and the outer circumferential surface of the fitting portion A plug connector comprising: a protrusion that engages with the guide groove and the threaded groove through the vertical groove; and a plug connector that includes a second contact that is coupled to the first contact. 2. The connector according to claim 1, wherein the cable is led out from the rear side surface of the plug connector.