JP2010287326A - Wire terminal plug with locking mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire terminal plug with a locking mechanism for preventing loosening of a cap from a plug body by providing a simple hooking structure consisting of a hooking flange provided to an opening end edge of the cap and a protruding wall of the plug body with which the hooking flange engages by overriding when screwing and fixing the cap on the plug body. <P>SOLUTION: In the wire terminal plug with a locking mechanism, the wire terminal plug includes a plug body A connected to a wire cord, and a tubular cap C for screwing a wire cord connection point of the plug body A on a threaded portion of the plug body A. A plurality of slots 14 are provided to the opening end edge of the cap C for screwing on the threaded portion of the plug body A, and a hooking flange 15 extending inward is provided on the inner peripheral surface of the opening end to allow engagement by overriding a protruding wall 13 of the plug body A. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lead wire terminal plug with a locking mechanism that is widely used for electrical connection of various music equipment and the like.

  In general, when playing a musical instrument such as a guitar using a speaker, electrical connection is made by connecting a conductor terminal plug provided at both ends of the conductor cord between the instrument and the speaker (for example, Patent Documents). 1).

  Here, a representative example of the conventional example will be described with reference to FIG.

  In the figure, a is a plug body, b is a conductive wire cord connected to the plug body a, and c is a cylindrical cap that is screwed with a screw part d provided at the base of the plug body a.

  By the way, the plug main body a has a tubular tube portion 3 formed through the tip engaging portion 1 and the insulating ring 2, and a core rod 4 communicating with the tip engaging portion 1 is inserted into the tubular tube portion 3, The threaded portion d is formed by providing a flange portion 5 at the base portion of the tubular tube portion 3.

  Then, at the rear end of the screw part d, one terminal plate 7 provided with a clamping claw 6 for clamping the conductive wire cord b is provided, and the other terminal plate 9 is provided via an insulating plate 8 to provide a conductive wire. The two conductors 10 and 11 constituting the cord b are used by soldering.

  That is, one conductor 10 of the conductor cord b is electrically connected to the tip engaging portion 1, and the other conductor 11 is electrically connected to the tube portion 3. An insulating cylinder 12 such as rubber for preventing inadvertent contact between the two conductors 10 and 11 of the conductor cord b is interposed inside the cylindrical cap c.

  In the above-described configuration, the cylindrical cap c can be screwed to the screw portion d of the plug main body a, and the cylindrical cap c can be firmly screwed to the base of the plug main body a.

JP 2008-294475 A

  In the above-mentioned plugs, particularly musical instrument plugs, the tip engaging portion 1 of the plug main body a is connected to a musical instrument such as a guitar. However, when handled extremely violently and messyly, the screwed portion between the cap c and the screw portion d of the plug body a is loosened, resulting in a problem that the adhesion is impaired.

  If this state is overlooked, there is a disadvantage that noise is generated due to loosening of the cap during performance, and measures such as fixing the screw part d with an adhesive or the like may be taken, but repair of the disconnection of the conductor cord Can no longer be used, and there are problems such as being disposable.

  The present invention has been made paying attention to the above points. When the screw is fixed to the plug body with the cap, the locking collar provided on the periphery of the opening end of the cap, and the locking collar A lead terminal plug with a locking mechanism that prevents the loosening of the tightening of the cap to the plug body by providing a simple locking structure consisting of the protruding wall of the plug body that can be pulled over and locked. The purpose is to provide.

  The present invention can solve the above problems by including the following configuration.

  (1) In a conductor terminal plug comprising a plug body connected to a conductor cord and a cylindrical cap capable of screwing and fixing a conductor cord connecting portion of the plug body to a screw portion of the plug body. Provided with a plurality of grooves on the periphery of the open end of the cap that can be screwed together, and provided with an inward locking hook on the inner peripheral surface of the open end so that it can be locked over the protruding wall of the plug body. Lead wire terminal plug with a locking mechanism.

  (2) An inclined surface is provided on the top surface of the protruding wall, and the locking collar portion of the cap is expanded by a plurality of kerfs so that the protruding wall can be slid over the protruding wall and locked. The conducting wire terminal plug with a locking mechanism according to (1) above,

  According to the present invention, a plurality of grooves are provided on the periphery of the opening end of the cap that is screwed into the threaded portion of the plug main body, and the locking hook portion facing inward is provided. Overcoming the screw and tightening will be completed, and the tightened state will be locked and strengthened by the engagement between the protruding wall and the locking collar, and it will be easy even if you play the instrument such as a guitar vibrated vigorously There is no risk of loosening and you can continue playing with peace of mind.

  In the unlikely event that the connection with the conductor cord becomes defective, or when the connection with another conductor cord is replaced, the cap is twisted in the opposite direction to the plug body using the necessary tool. Thus, the cap can be removed from the plug body by moving the locking collar over the protruding wall.

  In addition, since the locking protrusion at the opening end of the cap is provided with a plurality of kerfs, the diameter of the opening gradually increases when climbing over the protruding wall, and after the ride over, it shrinks slightly. Since the diameter of the opening is restored to the original shape, the engaged state is strong, and there is no possibility that relaxation occurs in a normal use state.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway side view of a lead wire terminal plug with a locking mechanism showing an embodiment of the present invention, where (a) shows when the plug body and the cap are not screwed, and (b) shows when the screw is locked. Show. (A) is a sectional view before getting over, (b) is a sectional view in the process of getting over, (a) is a sectional view showing the action state of the protruding wall of the plug body and the locking collar part of the cap that gets over the protruding wall. c) Cross-sectional view of the locked state (A), (b) is the elements on larger scale which show two examples of a protruding wall Full perspective view of cylindrical cap It is a side view which makes the cross section into a part which shows the typical example of a prior art example, (a) at the time of non-screwing of a plug main body and a cap, (b) at the time of a screwing process, (c) at the time of screwing tightening

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to examples.

  In each figure, A is a plug main body, 13 is a protruding wall provided on the flange portion 5 of the base, and the other parts constituting the plug main body A are the same as those of the conventional example, and are denoted by the same reference numerals. Omit the details of the description.

  C denotes a cylindrical cap coupled to the plug main body A, 14 denotes a plurality of grooves formed in the peripheral edge of the opening end of the cap C, and 15 denotes a locking toward the inside of the inner peripheral surface of the opening end. The flange portion 16 indicates a recess following the locking flange portion 15, and other configurations are the same as those of the conventional example, and the same reference numerals are given to omit the detailed description.

  By the way, the protruding wall 13 of the plug main body A is constituted by a case where the top is a sharp α or a flat β, as shown in FIGS. The provided locking collar 15 is provided with an inclined surface 17 so that it can slide and slide when the cap C is screwed and tightened.

  That is, the locking collar 15 slides on the inclined surface 17 of the projecting wall 13 in the process of moving the cap C along the threaded portion d of the plug main body A by the twisting advance at the time of tightening. The diameter expands and expands in the direction, finally climbs over the top and contracts again to return to the current size, and the protruding wall 13 enters the recess 16 to secure the locked state. Since the tightening torque at the time of tightening the cap C is increased, it is preferable to tighten using a tool or the like just before the tightening is completed.

  In this manner, the cylindrical cap C that can cover the connection portion of the conductor cord b with respect to the plug body A to which the conductor cord b is connected has a locking collar portion 15 formed on the periphery of the opening end. Since it can be screwed and tightened while overcoming the protruding wall 13, the cap C does not come loose from the plug body A even if the conductor cord fluctuates drastically. The instrument can be vibrated.

  Furthermore, there is no possibility that the cap C will loosen while the instrument is moving.

A, a Plug body b Conductor cord C, c Cap d Screw part 1 Tip engagement part 2 Insulation ring 3 Tube tube part 4 Core collar 5 Gutter part 6 Claw claw 7, 9 Terminal board 8 Insulation board 10, 11 Conductor 12 Insulation Cylindrical body 13 Projecting wall 14 Cut groove 15 Locking flange 16 Recess 17 Inclined surface α Sharp shape β Flat shape

Claims (2)

  A conductor terminal plug comprising a plug body connected to a conductor cord and a cylindrical cap capable of screwing and fixing a conductor cord connecting portion of the plug body to a screw portion of the plug body, and can be screwed to a screw portion of the plug body. A plurality of kerfs are provided on the peripheral edge of the opening end of the cap, and an inward locking hook portion is provided on the inner peripheral surface of the opening end so as to be able to get over the protruding wall of the plug body and be locked. Lead wire terminal plug with a locking mechanism.   An inclined surface is provided on the top surface of the protruding wall, and the locking collar portion of the cap is expanded by a plurality of grooves so that the protruding wall can be slid over the protruding wall and locked. The lead wire terminal plug with a locking mechanism according to claim 1.

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