JP3218791U - Connector removal prevention tool - Google Patents

Abstract

Provided is a connector disconnection prevention device that prevents a connector fitted by a force applied to a cable portion from rotating relatively in the circumferential direction. A first connector has a columnar shape having a short-diameter portion having a short diameter in a specific direction at an end on a cable side, and the second connector has irregularities in a circumferential direction of the outer peripheral portion. The connector removal prevention tool includes a first connector fixing portion 310, a second connector fixing portion 320, and a connecting portion 330. The first connector fixing portion has a slit 311 having a width that substantially matches the diameter of the short diameter portion. A 2nd connector fixing | fixed part has the convex parts 321 and 322 or a recessed part corresponding to the said unevenness | corrugation when it is in the state where a 1st connector and a 2nd connector are hard to come off. When the first connector and the second connector are inserted and rotated relatively in the circumferential direction, the short diameter portion fits into the slit, and the unevenness fits into the convex portion or the concave portion. The connector can no longer rotate in the circumferential direction and can be prevented from coming off. [Selection] Figure 4

Description

  The present invention relates to a connector prevention tool.

  Patent Document 1 discloses a method for preventing disconnection by preventing the connectors from being separated from each other by a jig separate from the connector. Patent Documents 2 and 3 show a technique in which a plug is inserted into a socket and then relatively rotated in the circumferential direction. In particular, Patent Document 3 discloses a technique for preventing the removal by relatively rotating. Patent Document 4 shows an example in which a connector includes a disconnection prevention tool.

JP-A-10-27651 JP 59-173982 A Japanese Patent Laid-Open No. 9-60782 JP 2007-103046 A

  However, the technique of Patent Document 1 has a problem that it takes time to attach a separate jig. In the case of the technique of Patent Document 4, the connector is always provided with a removal prevention tool, and the connector tends to be expensive. In the case of the techniques of Patent Documents 2 and 3, if a circumferential force is applied to the connector by an action such as moving the cable portion, the plug may be relatively rotated in the direction in which it is removed from the socket.

  An object of the present invention is to provide a technique for preventing a connector from coming off by preventing a connector fitted by a force applied to a cable portion from rotating relatively in the circumferential direction.

  The connector disconnection preventing tool of the present invention is insertable / removable, and prevents the first connector and the second connector, which become difficult to be disconnected by being rotated relatively in the circumferential direction after being inserted, from being disconnected. The first connector has a columnar shape having a short diameter portion with a short diameter in a specific direction at an end on the cable side. The second connector has irregularities in the circumferential direction of the outer peripheral portion. The connector disconnection preventing device of the present invention includes a first connector fixing portion, a second connector fixing portion, and a connecting portion. The first connector fixing portion has a slit having a width that substantially matches the diameter of the short diameter portion. A 2nd connector fixing | fixed part has a convex part or a recessed part corresponding to the said unevenness | corrugation when a 1st connector and a 2nd connector are in the state which is hard to remove | deviate. The connecting portion connects the first connector fixing portion and the second connector fixing portion.

  According to the connector disconnection preventing device of the present invention, when the first connector and the second connector are inserted and relatively rotated in the circumferential direction, the short diameter portion of the first connector is the first connector fixing portion. The concave and convex portions of the second connector fit into the convex portions or concave portions of the second connector fixing portion. Therefore, in the state in which the connector disconnection prevention tool is attached, the first connector and the second connector cannot be rotated relative to each other in the circumferential direction. Therefore, the connector can be prevented from coming off.

The figure which shows the example of a 1st connector. The figure which shows the example of a 2nd connector. The figure which shows the mode of a fitting of a 1st connector and a 2nd connector. The figure which shows the example of the shape of the connector omission prevention tool of this invention. The figure which shows a mode that a connector disconnection prevention tool is attached. The figure which shows the modification of a connector omission prevention tool.

  Hereinafter, embodiments of the present invention will be described in detail. In addition, the same number is attached | subjected to the structure part which has the same function, and duplication description is abbreviate | omitted.

  FIG. 1 shows an example of the first connector. 1A is a left side view, FIG. 1B is a front view, FIG. 1C is a right side view, and FIG. 1D is a bottom view. The first connector 100 includes a cylindrical body 110, plugs 121 to 123, a cable fixing portion 151 that is integral with the body 110, and a cable fixing portion 152 that is separate from the body 110. The cable fixing portions 151 and 152 fix the cable 910 by sandwiching the cable 910 and fixing it with screws or the like. Although not shown, the core wire in the cable 910 is connected to the plugs 121 to 123 inside the body 110. FIG. 1 shows a state in which the cable fixing portions 151 and 152 are fixed with screws or the like, and as shown in FIG. 1C, when the cable fixing portions 151 and 152 are fixed with screws or the like. The vertical direction is shorter. That is, the first connector 100 has a short diameter portion with a short diameter in a specific direction at the end on the cable side. In the case of the example in FIG. 1, the cable fixing portions 151 and 152 correspond to the short diameter portion, but for the present invention, if the short diameter portion is present at the end of the first connector on the cable side, it is not a portion for fixing the cable. May be.

  The example of the 2nd connector of FIG. 2 is shown. 2A is a left side view, FIG. 2B is a front view, FIG. 2C is a right side view, and FIG. 2D is a bottom view. The second connector 200 includes a body 210, sockets 221 to 223, a cable fixing portion 251 that is integral with the body 210, a cable fixing portion 252 that is separate from the body 210, and depressions 211 and 212. The cable fixing portions 251 and 252 fix the cable 920 by sandwiching the cable 920 and fixing it with screws or the like. Although not shown, the core wire in the cable 920 is connected to the metal pieces in the sockets 221 to 223 inside the body 210. FIG. 2 shows a state where the cable fixing portions 251 and 252 are fixed with screws or the like. The second connector 200 may be provided with irregularities in the circumferential direction of the outer peripheral portion of the body 210. In the example of FIG. 2, the depressions 211 and 212 are provided as irregularities, but the depressions are not necessarily required and may be protrusions. In the example of FIG. 2, the recess is at the end on the first connector side. However, it is preferable to be at the end, but it is not always necessary to be at the end. Further, the second connector 200 may not be cylindrical.

  FIG. 3 is a diagram showing a state of fitting the first connector and the second connector. 3A shows a state in which the first connector and the second connector are separated from each other, and FIG. 3B shows a state in which the plug of the first connector is being inserted into the socket of the second connector. 3 (C) shows a state in which the first connector is inserted into the second connector, and FIG. 3 (D) shows a state in which the first connector is relatively rotated in the circumferential direction. The first connector 100 and the second connector 200 can be inserted and removed, and after inserting, the first connector 100 and the second connector 200 are not easily pulled out by rotating relatively in the circumferential direction. That is, in the state of FIG. 3D, the first connector 100 will not come out of the second connector 200.

  As shown in the problem, when the first connector 100 and the second connector 200 are connected in the state of FIG. 3D, the cables 910 and 920 may be moved. When force is applied to the cables 910 and 920 in this way, force may also be applied to the first connector 100 and the second connector 200, and in rare cases, a force that relatively rotates in the circumferential direction is applied. C) may occur. In this state, if a force in the direction of disconnecting the first connector 100 from the second connector 200 is further applied, the first connector 100 may be disconnected from the second connector.

  FIG. 4 is a view showing an example of the shape of the connector disconnection preventing device of the present invention. 4 (A) is a plan view, FIG. 4 (B) is a left side view, FIG. 4 (C) is a front view, FIG. 4 (D) is a right side view, FIG. 4 (E) is a bottom view, and FIG. F) is a rear view. FIG. 5 is a diagram illustrating a state in which the connector disconnection prevention tool is attached. FIG. 5A is a diagram showing the state before attachment, and FIG. 5B is a diagram showing the state after attachment. The connector removal prevention tool 300 includes a first connector fixing part 310, a second connector fixing part 320, and a connecting part 330.

  The first connector fixing portion 310 has a slit 311 having a width that substantially matches the diameter of the short diameter portion of the first connector 100. “Almost match” may be a little smaller or a little larger in consideration of the material and thickness of the slit 311. The purpose of the slit 311 is not to rotate relative to the first connector 100 even when a circumferentially rotating force is applied to the first connector fixing portion 310. In addition, if the width of the slit 311 is too narrow, it is difficult to attach the connector disconnection prevention tool 300. Therefore, “substantially match” means a range in which the connector removal prevention tool 300 does not rotate relative to the first connector 100 and does not hinder attachment.

  Second connector fixing portion 320 includes a portion that covers the outer peripheral portion of second connector 200 when first connector 100 and second connector 200 are in the state shown in FIG. . In the example of FIG. 4, the area is surrounded by a dotted line in FIG. The second connector fixing portion 320 is provided with a convex portion or a concave portion corresponding to the concave and convex portions on the outer periphery of the second connector 200 when the first connector and the second connector are not easily detached (in the state shown in FIG. 3D). Have. The example of FIG. 4 includes convex portions 321 and 322. The convex portion 321 fits into the recess 211, and the convex portion 322 fits into the recess 212. And the 2nd connector fixing | fixed part 320 prevents the connector removal prevention tool 300 from rotating relatively with respect to the 2nd connector 200. FIG. Further, the protrusions 321 and 322 are fitted into the recesses 211 and 212, so that the attached connector removal prevention tool 300 can be prevented from being detached from the first connector 100 and the second connector 200. In the example of FIG. 4, two convex portions 321 and 322 are shown. However, in order to prevent the second connector 200 from rotating relative to each other and to prevent the convex portion from being removed from the recess, more You may provide the convex part. If only one is sufficient, the number of convex portions may be one. In addition, if the 2nd connector has a convex part, the 2nd connector fixing | fixed part 320 should just be provided with the hole in which the convex part fits.

  The connecting part 330 connects the first connector fixing part 310 and the second connector fixing part 320. The connection part 330 desirably has a structure that covers the first connector 100 as long as it does not interfere with the attachment of the connector removal prevention tool 300. This is because when the connecting portion 330 is deformed such as being twisted, there is a high risk that the connector disconnection prevention tool 300 is detached, and the first connector 100 and the second connector 200 are relatively rotated. . Moreover, what is necessary is just to determine a material, thickness, etc. so that it may have the hardness required in order to reduce this risk.

  According to the connector removal preventing tool 300, when the first connector 100 and the second connector 200 are inserted and relatively rotated in the circumferential direction, the short diameter portion of the first connector 100 is the first connector fixing portion. The concave and convex portions of the second connector 200 are fitted into the convex portions or concave portions of the second connector fixing portion 320. Therefore, in a state in which the connector disconnection prevention tool 300 is attached, the first connector 100 and the second connector 200 cannot be rotated relative to each other in the circumferential direction. Therefore, the connector can be prevented from coming off. Moreover, as shown in FIG. 5, if it pushes in from the 1st connector 100 side, it can attach easily.

  FIG. 6 is a view showing a modification of the connector disconnection preventing tool. In addition to the connector removal prevention tool 300, the connector removal prevention tool 301 also includes a release piece 335 for removing the projection 321 from the recess 211 in the vicinity of the projection 321. If the release piece 335 is provided, it can be easily removed when the operator tries to remove the connector removal prevention tool 301.

DESCRIPTION OF SYMBOLS 100 1st connector 121,122,123 Plug 110 Body 151,152 Cable fixing part 200 Second connector 210 Body 221,222,223 Socket 251,252 Cable fixing part 300,301 Connector removal prevention tool 310 First connector fixing part 311 Slit 320 Second connector fixing part 321, 322 Protrusion part 330 Connecting part 335 Release piece 910, 920 Cable

Claims (3)

The first connector has a cylindrical shape having a short diameter portion with a short diameter in a specific direction at the end on the cable side, and the second connector has irregularities in the circumferential direction of the outer peripheral portion, and can be inserted and removed. A connector disconnection prevention tool for preventing the first connector and the second connector from coming out by being later rotated relatively in the circumferential direction.
A first connector fixing portion having a slit having a width substantially matching the diameter of the short diameter portion;
A second connector fixing portion having a convex portion or a concave portion corresponding to the concave and convex portions when the first connector and the second connector are difficult to be removed;
A connecting portion for connecting the first connector fixing portion and the second connector fixing portion;
Connector disconnection prevention device with The connector disconnection prevention tool according to claim 1,
The unevenness is a depression,
The said 2nd connector fixing | fixed part has a convex part which fits into the said hollow. The connector removal prevention tool characterized by the above-mentioned. The connector disconnection prevention tool according to claim 2,
In the vicinity of the convex portion, there is also a release piece for removing the convex portion from the recess.

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