Detector Cable Guard Background and summary of the invention This invention relates to an auxiliary device for protecting the coil cable in the area that the coil cable connects to the control box of the metal detector. With metal detectors of kind, the coil cable is coiled around the upper and lower shafts to take up the extra length in the coil cable. This extra length in the coil cable is due to the upper and lower shafts coming in different lengths. It is common for these metal detectors to be transported large distances in the back of vehicles over varying terrain as many metal detector operators don't live in close proximity to the area they intend to use them. The packing of the metal detector in those vehicles is at the operator's discretion and with all good intensions the metal detector can be subject to damage With these hand held types of detector, one of their main features is the interchange ability of search coils, it is not uncommon for theSearch coils to be changed several times in a days detecting. The use of the Cable Guard facilitates the quick and easy changeover trom one search coil to another regardless of differing lengths of cable. It has been observed that false signals are produced by the physical movement of the coil cable in the area where the coil cable connects to the control box. Thik physical movement often occurs in the motion of metal detecting, where the search coil is moved from right to left repeatedly and the coil cable touches the body of the metal detector operator or other objects in the outdoors like trees, scrubs and rocks. With clamping of the coil cable in the control box area, the coil cable can be damaged when placed on a blunt object for an extended period or hit against a solid object. This is due to the coil cable being unable to move and the physical force causing the shielding of the cable to break or the separating insulating material between the core wires and the shielding being compressed to the point where the required separation between the core and shielding fails to maintain its integrity. It is a principal object of this invention to protect the coil cable in the area of the control box in a manner to minimize external physical forces acting on the coil cable which would tend to produce false signals. It is another object of this invention to allow the coil cable to approach the control box connection at the correct alignment removing the physical forces acting on the coil cable connection to the control box when approached at an angle. It is another object of this invention to allow the easy access to the connection of the coil cable to the control box allowing the detector operator to change search coils at ease without removing the Detector Cable Guard. It is a further object of this invention to provide protection to the coil cable from physical forces causing damage to the coil cable in the area of the handle to control box and be achieved without clamping the coil cable. 1 These objects are accomplished in a Detector Cable Guard structure when connected to the underside of the metal detector handle, which shape allows the coil cable to pass through without, physical forces being placed on it. The shape eliminates any of the common and less common causes of false signals in the area of the control box. The novel features and advantages of the invention will be understood more fully from the following description when read in connection with the accompanying drawing. Drawing FIG 1 is a perspective view of a metal detector device having cable guard according to the present invention; FIG 2 is a end view of the Detector Cable Guard FIG 3 is a side elevation view of the Detector Cable Guard FIG 4 is an exploded view of the non-metallic Detector Cable Guard shown in position for mounting on the metal detector handle in accordance with this invention. Description of the preferred embodiment FIG 1 of the drawing is a perspective view of a metal detector having a Detector Cable Guard 1 according to the present invention. The Detector Cable Guard 1 is made of a non-metallic material such as plastic material or the like which is lightweight but has structural stability and strength. A metal detector Fig 1 includes an upper shaft 2 lower shaft 3 which is secured toa search coil 4. A handle 5 fitted to the upper shaft 2 by two clamping bolts 7 projecting upward from the upper shaft 2 is provided for convenience in manipulating the metal detector Fig 1. The control box 6 attached to the upper shaft 2 contains the major portion of the circuitry and controls for operating the metal detector Fig 1. The Detector Cable Guard 1 is fitted to the underside of the handle 5 by replacing the clamping bolts 7 with longer bolts. With this Detector Cable Guard 1 the coil cable Z5 can pass through to the control box 6 parallel to the upper shaft 2. Accordingly the coil cable connection 9 at the control box 6 is not under stress from approaching the control box 6 at an angle. Where the coil cable 8 connects to the control box 6 it has been found that false signals result from movement to the coil cable 8 in this area. 2 Another factor which can produce false or error signals to the coil cable 8 is the angle the coil cable 8 and plug 10 approach the connection 9 at the control box 6. The optimum line of approach is parallel to upper shaft 2, as this places no mechanical strain on coil cable 8, plug 10 or connection 9. The greater the angle of approach deviates from this optimum line, the more mechanical stress is placed on the coil cable 8, plug 10 and connection 9., What has been described is a novel and improved Detector Cable Guard having features which serve to eliminate false signals, which are sometimes produced resulting from physical forces acting on the coil cable in the area of the handle to control box connection, While a preferred embodiment of the invention has been illustrated and described, it will be understood by those skilled in the art that changes and modifications may be resorted to without departing from the spirit and scope of the invention. 3