JP4221714B2 - Cable connector with locking device - Google Patents

Description

  The present invention relates to a cable connector including a lock device that locks a connection state between a plug and a jack.

As a cable connector composed of a plug and a jack, for example, as described in Patent Document 1, a female screw cylinder capable of axial movement within a certain range is loosely fitted into one plug, and the plug and the jack are inserted. It is known that the female screw cylinder is connected by being screwed and fastened to a male screw portion provided on the other jack side. As a locking device used for such a cable connector, for example, in Patent Document 1, the outer peripheral surface of the plug is adjacent to both ends of the female screw cylinder at both ends of the connecting portion having a length substantially equal to the total length of the female screw cylinder. And a C-shaped mounting portion that can be fitted and fixed against the outer peripheral surface of the jack against elasticity.
Japanese Utility Model Publication No. 2-163

  In the conventional cable connector locking device as described in Patent Document 1 described above, the threaded and fastened female screw cylinder rotates in the slack direction and moves backward in the axial direction at both ends of the female screw cylinder. Since it is the structure which prevents by the frictional force between a pair of C-shaped mounting part which is elastically press-contacting to the outer peripheral surface of a plug and the outer peripheral surface of a jack in the adjacent state, and the outer peripheral surface of a plug, and the outer peripheral surface of a jack. If an external force that overcomes this frictional force acts in the loosening direction of the female screw cylinder, it is not possible to prevent the female screw cylinder from loosening, and in other words, the plug and jack from being loosely connected. In other words, it must be said that the loosening prevention function is very low.

An object of the present invention is to provide a cable connector with a locking device that can solve the conventional problems as described above, and its means is shown with reference numerals of embodiments described later. The plug 1 is composed of a combination of a cable connector including a plug 1 and a jack 3 and a locking device 5. The plug 1 includes a male connector portion 7 and a bottomed cylindrical threaded body 10 for connecting to the male connector portion 7. The jack 3 is provided with a female connector portion 14 that can be freely inserted into and removed from the male connector portion 7 and a bottomed cylindrical threaded body 17 for connection that is externally fitted to the female connector portion 14. are, each bottomed cylindrical threaded body 10 and 17, the bottom portion 9, 16 is an annular groove 8, 15 formed on the rear side of each connector portion 7, 14,, the bottomed cylindrical threaded body 10 , 17 axial movement and rotation around the axis are possible The male connector portion 7 and the female connector portion 14 are screwed to each other through the bottom inner side surfaces 9a and 16a and the front side surfaces 8a and 15a of the annular grooves 8 and 15, respectively. The locking device 5 includes a connecting portion 28 and a pair of insertion portions 26 and 27 connected in the same direction from both ends of the connecting portion 28. The insertion portions 26 and 27 are connected to each other in a state in which the bottomed cylindrical screw bodies 10 and 17 for both connections are screwed together and the male connector portion 7 and the female connector portion 14 are fastened in the axial direction. The bottomed cylindrical screw bodies 10 and 17 have a thickness that fills the gaps 24 and 25 between the bottom side outer surfaces 9b and 16b and the rear side surfaces 8b and 15b of the annular grooves 8 and 15. If it is formed in a bifurcated shape that can be inserted and removed in the diametrical direction relative to 8,15 Has become stop for the latching portion 26a omission at its distal end inside the structure 27a is formed.

  In carrying out the present invention with the above configuration, as described in claim 2, the connecting portion 28 can be formed in a circular arc shape along the surfaces of the bottomed cylindrical screw bodies 10 and 17 for both connections. . In addition, as described in claim 3, the bottomed cylindrical screw bodies 10 and 17 for both connections are screwed together and the male connector portion 7 and the female connector portion 14 are fastened in the axial direction. The clearances 24 and 25 between the bottom outer side surfaces 9b and 16b of the bottomed cylindrical screw bodies 10 and 17 for connection in FIG. 5 and the rear side surfaces 8b and 15b of the annular grooves 8 and 15 have the same width, and the locking device 5 The pair of insertion portions 26 and 27 can be configured to have the same thickness.

  According to the cable connector with a locking device according to the present invention having the above-described configuration, the bottomed cylindrical screw bodies for both connections are screwed to each other in a state where the male connector portion and the female connector portion of the cable connector are fitted and connected to each other. By fitting, the male connector part and the female connector part can be fastened in the axial direction at the bottom inner surface of the bottomed cylindrical screw body for both connections. In this state, the locking device The two-end bifurcated insertion portion of each of the bottom ends of each connecting bottomed cylindrical screw body and the rear surface of the annular groove of the plug and jack are inserted into the gap between the bottom of the annular groove of the plug and the jack by the retaining hook portion on the inner side of the tip portion. By inserting against the resistance and filling the gap with a bifurcated plug at both ends of the locking device, it is possible to ensure relative movement in the direction of separating from each other due to the relative rotation in the loosening direction of the bottomed cylindrical screw body for both connections To prevent it Kill.

  That is, according to the configuration of the present invention, as long as the two-end bifurcated insertion portion of the locking device is not pulled out against the resistance by the retaining hook portion, the bottomed cylindrical screw body for both connections is in the slack direction. Relative movement in the direction of separating from each other due to relative rotation can be reliably and strongly prevented by the compressive stress in the thickness direction of the bifurcated insertion part at both ends, and the anti-loosening function is very high compared to the conventional one It is. In addition, the bifurcated plugs at both ends of the locking device are connected to the bottoms of the bottomed cylindrical threaded bodies for connection unless the bottomed cylindrical threaded bodies for connection on the plug side and the jack side are screwed together to a predetermined depth. Since it cannot be inserted into the gap between the side surface and the rear side surface of the annular groove of the plug and the jack, the bottomed cylindrical screw bodies for connection on the plug side and the jack side are not completely screwed together. There is no fear of locking in the state, and it is possible to lock after confirming the complete connection state of the cable connector itself.

  In addition, according to the structure of Claim 2, even if it makes thin the thickness of the connection part which connects the both-ends bifurcated insertion part of a locking device, required rigidity is ensured, and insertion of both-ends bifurcated insertion part is achieved. The operation can be facilitated, and the connecting portion does not protrude to the outside of the cable connector, so that it is possible to eliminate the possibility of other objects being caught on the connecting portion and coming off unexpectedly.

  Furthermore, according to the structure of Claim 3, since the both-ends bifurcated insertion part of a locking device can be inserted and inserted regardless of a plug side and a jack side, operativity is improved.

  A specific embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 to 3, 1 is a plug attached to the terminal of the cable 2, 3 is a jack attached to the terminal of the cable 4, 5 Is a locking device. The plug 1 has a male connector portion 7 projecting from a tip portion 6 a of the plug body 6, and an annular groove 8 is formed inside the plug body tip portion 6 a, and a ring-shaped bottom portion that is loosely fitted in the annular groove 8. 9 is provided with a bottomed cylindrical screw body for connection 10 including a plug body tip 6a, and the male connector portion 7 has a required number of cylindrical terminals opened at the tip thereof. 11 and the positioning groove 12 are provided, and each cylindrical terminal 11 and the core wire of the cable 2 are electrically connected. A female threaded portion 10 a is provided on the inner periphery of the tip of the bottomed cylindrical threaded body 10 for connection.

  The jack 3 has a female connector portion 14 projecting from a tip portion 13 a of the jack body 13, and an annular groove 15 is formed inside the jack body tip portion 13 a, and a ring-shaped bottom portion that is loosely fitted in the annular groove 15. A connecting bottomed cylindrical threaded body 17 having 16 is mounted so as to enclose the jack main body tip portion 13a, and the male connector portion 7 of the plug 1 is fitted into the female connector portion 14. A recess 18, a required number of pin-shaped terminals 19 projecting into the recess 18 and fitted into each cylindrical terminal 11 in the male connector portion 7 of the plug 1, and for positioning in the male connector portion 7 of the plug 1 Positioning protrusions 20 that fit into the recessed grooves 12 are provided, and each pin-shaped terminal 19 and the core wire of the cable 4 are electrically connected. Further, a male screw portion 17a that can be screwed into the female screw portion 10a of the bottomed cylindrical screw body 10 for connection on the plug 1 side is provided on the outer periphery of the distal end portion of the bottomed cylindrical screw body 17 for connection.

  Thus, the plug main body 6 excluding the male connector portion 7 on the plug 1 side and the jack main body 13 excluding the female connector portion 14 on the jack 3 side are the same in size and shape, and each tip The portions 6 a and 13 a and the annular grooves 8 and 15 have the same diameter and axial length, and the peripheral surfaces of the plug body 6 and the jack body 13 are provided with the positioning groove 12 and the positioning protrusion 20. Projection marks 21 and 22 indicating positions in the circumferential direction are integrally formed. On the plug body 6 side, an O-ring 23 that is externally fitted to the base portion of the male connector portion 7 and is in contact with the end surface of the plug body tip portion 6a is mounted. Further, the outer diameter of the bottomed cylindrical screw body 10 for connection on the plug 1 side and the thickness of the ring-shaped bottom 9, and the outer diameter of the bottomed cylindrical screw body 17 for connection on the jack 3 side and the thickness of the ring-shaped bottom 16. Are the same.

  According to the cable connector having the above configuration, the male connector portion 7 on the plug 1 side is positioned in the female connector portion 14 on the jack 3 side, and the female connector portion 14 is positioned in the positioning groove 12 on the male connector portion 7. By inserting so that the protruding protrusions 20 are inserted, the pin terminals 19 of the female connector part 14 are inserted into the cylindrical terminals 11 of the male connector part 7, and the cables 2 and 4 are electrically connected to each other. Can be connected to. At this time, as shown in FIG. 4, the bottomed cylindrical threaded body 10 for connection on the plug 1 side and the bottomed cylindrical threaded body 17 for connection on the jack 3 side are in the retreat limit position, and their tips are mutually connected. Adjacent. Accordingly, by pressing the two connecting bottomed cylindrical screw bodies 10 and 17 in the direction in which they are brought close to each other, the female screw portion 10a and the male screw portion 17a are screwed together so that the two screw portions 10a and 17a approach each other while relatively rotating with each other. The inner side surfaces 9a and 16a of the ring-shaped bottom portions 9 and 16 of the moving bottomed cylindrical screw bodies 10 and 17 for connection are the front side surface 8a of the annular groove 8 on the plug body 6 side and the annular groove 15 on the jack body 13 side. The male connector part 7 and the female connector part 14 are pressed in a direction in which the male connector part 7 and the female connector part 14 are more deeply fitted to each other through the front side surface 15a.

  As is apparent from the above operation, the male connector portion 7 and the female connector portion 14 are completely inserted to compress the O-ring 23 between the two bottomed cylindrical threaded bodies 10 and 17 by screwing and fastening. Will be held in a state. When the screw connection between the bottomed cylindrical threaded bodies 10 and 17 for both connections is completed, as shown in FIG. 5, the outer side surfaces of the ring-shaped bottom portions 9 and 16 of the bottomed cylindrical threaded bodies 10 and 17 for both connections Clearances 24 and 25 having the same width are formed between the rear side surface 8b of the annular groove 8 on the plug body 6 side and the rear side surface 15b of the annular groove 15 on the jack body 13 side.

  The locking device 5 has a pair of insertion portions 26 having a thickness that can just fill the gaps 24 and 25 when the screwing and fastening of the bottomed cylindrical screw bodies 10 and 17 for both connections shown in FIG. , 27 are integrated with a connecting portion 28, and each insertion portion 26, 27 is formed in a bifurcated shape that can be inserted and removed in the diametrical direction with respect to the gaps 24, 25, and the inside of the tip portion thereof. Are formed with retaining portions 26a, 27a for retaining. The connecting portion 28 has a width substantially equal to the diameter of the bottomed cylindrical screw bodies 10 and 17 for connection, and each of the above-mentioned when the screwing fastening between the bottomed cylindrical screw bodies 10 and 17 for connection shown in FIG. It has a length that allows a pair of insertion portions 26 and 27 to be inserted into the gaps 24 and 25 at the same time, and its cross-sectional shape is along the outer peripheral surface of the bottomed cylindrical screw bodies 10 and 17 for both connections. It is formed in a curved arc shape.

  Therefore, as shown in FIG. 5, after the screw connection of the bottomed cylindrical screw bodies 10 and 17 for both connections is completed, the pair of bifurcated insertion portions 26 and 27 of the lock device 5 are connected to the bottoms for connection. For retaining the inner side of the tip of the gaps 24, 25 between the outer bottom surfaces 9b, 16b of the cylindrical screw bodies 10, 17 and the rear surfaces 8b, 15b of the annular grooves 8, 15 of the plug 1 and jack 3. By inserting the gaps 24 and 25 against the resistances of the hook portions 26a and 27a and filling the gaps 24 and 25 with both-ends bifurcated insertion portions 26 and 27 of the lock device 5, both bottomed cylindrical screw bodies 10 and The relative movement in the direction of separating from each other due to the relative rotation in the slack direction of 17 can be reliably and strongly prevented.

  It should be noted that when both the bottomed cylindrical screw bodies 10 and 17 for connection are screwed and fastened to each other, the bottomed cylindrical screw bodies 10 and 17 for both connections must be operated so as not to rotate together. As described above, a plurality of low axial projections 8c, 15c are integrally formed on the peripheral surfaces of the annular grooves 8, 15 of the plug 1 and jack 3 on the front side surfaces 8a, 15a side. When the two bottomed cylindrical screw bodies 10 and 17 for connection are moved relatively close to each other so as to be screwed together, the bottomed cylindrical screw bodies 10 and 17 for connection are axially protruded portions 8c and 15c. If the rotation resistance is remarkably increased by climbing onto, it is possible to easily perform the screwing and fastening operation of the bottomed cylindrical screw bodies 10 and 17 for both connections.

FIG. A is a partially longitudinal side view showing a state in which the locking device is used, FIG. B is a perspective view of the locking device, and FIG. C is a cross-sectional view taken along line AA in FIG. It is a partial vertical side view which shows the cable connector before connecting. Fig. A is a front view of the cable connector on the plug side, and Fig. B is a front view of the cable connector on the jack side. It is a partially vertical side view which shows the state which connected the plug and jack of the cable connector. It is a partial longitudinal cross-sectional side view which shows the cable connector which completed the connection, and the locking device just before use.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plug 3 Jack 5 Locking device 6 Plug main body 6a Plug main body tip part 7 Male connector part 8, 15 Annular groove 8a, 15a Annular groove front side face 8b, 15b Annular groove rear side face 9, 16 Ring-shaped bottom part 9a, 16a Inner side surfaces 9b and 16b of the ring-shaped bottom portion Outer surfaces 10 and 17 of the ring-shaped bottom portion A bottomed cylindrical threaded body 10a for female connection 13
13a Jack main body tip part 14 Female connector part 17a Male thread parts 24, 25 Clearance 26, 27 A pair of bifurcated insertion parts 26a, 27a Hooks for retaining

Claims (3)

It consists of a combination of a cable connector consisting of a plug and a jack and a locking device. The plug is provided with a male connector part and a bottomed cylindrical threaded body for connection that fits around the male connector part. , the and the connecting bottomed cylindrical screw body fitted provided Hamada' freely female connector section and the female connector part to the male type connector portion, each of the bottomed cylindrical threaded body, the The bottom part is fitted in an annular groove formed on the rear side of each connector part so that the bottomed cylindrical screw body can move in the axial direction and rotate around the axial center, and is screwed together. Accordingly, the male connector portion and the female connector portion are fastened in the axial direction via the inner side surface of each bottom portion and the front side surface of the annular groove, and the locking device includes the connecting portion and the connecting portion. From a pair of plugs connected in the same direction from both ends of the Each insertion part is a bottomed cylinder for connection in a state where the bottomed cylindrical screw bodies for both connections are screwed together and the male connector part and the female connector part are fastened in the axial direction. And having a thickness that fills the gap between the outer surface of the bottom of the threaded body and the rear surface of the annular groove, and is formed in a forked shape that can be inserted into and removed from the annular groove in the diametrical direction. A cable connector with a locking device that has a hook for locking.   The cable connector with a locking device according to claim 1, wherein the connecting portion is formed in a circular arc shape along a surface of the bottomed cylindrical screw body for both connections. The bottomed cylindrical threaded body for connection is fitted to the bottomed cylindrical threaded body for connection in a state where the bottomed cylindrical threaded bodies for both connections are screwed together and the male connector portion and the female connector portion are fastened in the axial direction. The locking device according to claim 1 or 2, wherein the gap between the rear side surfaces of the annular grooves to be joined is configured to have the same width, and the thickness of the pair of insertion portions of the locking device is configured to be the same. Cable connector.

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