Multifunctional metal detector

Abstract

The present disclosure discloses a multifunctional metal detector, including a housing and a control circuit board and a wall detection circuit mounted in the housing. The multifunctional metal detector further includes at least one coupling assembly capable of being connected to the control circuit board, the coupling assembly being constructed for detachably coupling and connecting at least one functional device to the multifunctional metal detector. The coupling assembly is used to detachably couple and connect at least one functional device to different functional devices, so as to achieve the combined application of metal detection and other functions selected by a user on his/her own.

1 . A multifunctional metal detector, comprising a housing and a control circuit board and a wall detection circuit mounted in the housing, comprising:
 at least one coupling assembly capable of being connected to the control circuit board, the coupling assembly being constructed for detachably coupling and connecting at least one functional device to the multifunctional metal detector, and the functional device being used for proving other functions different from metal detection.   
     
     
         2 . The multifunctional metal detector according to  claim 1 , wherein the coupling assembly is used for fixing the functional device to the housing and/or used for information transmission between the functional device and the multifunctional metal detector. 
     
     
         3 . The multifunctional metal detector according to  claim 2 , wherein the coupling assembly comprises a first coupling assembly, the first coupling assembly comprising
 an insert portion, the insert portion being disposed on one of the multifunctional metal detector and the functional device; and   an accommodating portion, the accommodating portion being disposed on the other one of the multifunctional metal detector and the functional device and being capable of accommodating the insert portion;   when the insert portion is accommodated by the accommodating portion, the insert portion and the accommodating portion being limited to each other and electrically connected so that the functional device is connected to the multifunctional metal detector.   
     
     
         4 . The multifunctional metal detector according to  claim 3 , wherein the housing comprises an intermediate frame, and the coupling assembly is disposed on the intermediate frame. 
     
     
         5 . The multifunctional metal detector according to  claim 4 , further comprising a laser distance measuring device integrated in the housing and connected to the control circuit board, the laser distance measuring device being located on the short edge side of the intermediate frame, and the intermediate frame being provided with a transmitting channel and a receiving channel for a light source of the laser distance measuring device to pass through at corresponding positions. 
     
     
         6 . The multifunctional metal detector according to  claim 5 , further comprising a laser projection device integrated in the housing and connected to the control circuit board, the laser projection device and the laser distance measuring device being arranged side by side in the width direction of the intermediate frame or in the thickness direction of the intermediate frame, and the intermediate frame being provided with a marking channel for a light source of the laser projection device to pass through at a corresponding position. 
     
     
         7 . The multifunctional metal detector according to  claim 5 , further comprising a lighting device integrated in the housing and connected to the control circuit board, the lighting device and the laser distance measuring device being disposed on the same side of the intermediate frame, and the intermediate frame being provided with a lighting channel for a light source of the lighting device to pass through at a corresponding position. 
     
     
         8 . The multifunctional metal detector according to  claim 5 , further comprising a test pencil integrated in the housing and connected to the control circuit board, the intermediate frame being provided with a first through hole at the side corresponding to the test pencil, and the test pencil being slidably disposed in the housing between an extension position for extending out of the first through hole and a hidden position for retracting into the first through hole. 
     
     
         9 . The multifunctional metal detector according to  claim 8 , wherein the test pencil is provided with a toggle switch, and at least a part of the toggle switch projects out of the surface of the housing so that the test pencil extends or retracts into the housing under the action of the toggle switch. 
     
     
         10 . The multifunctional metal detector according to  claim 2 , wherein the coupling assembly comprises a second coupling assembly, the functional device is constructed to be movably switched between a first position, a second position and a third position under the action of the second coupling assembly, and when the functional device is located at the first position, the functional device is integrally placed inside the housing; when the functional device is located at the second position, the functional device is integrally placed outside the housing; when the functional device is located at the third position, the functional device is placed inversely in the housing and at least a part of the functional device extends out of the housing. 
     
     
         11 . The multifunctional metal detector according to  claim 10 , wherein the functional device comprises a first end side and a second end side, the first end side is provided with a conductive terminal, the second end side is provided with an elastic conductive member protruding out of the second end side, the first end side is arranged opposite to the second end side and the conductive terminal is electrically connected to the elastic conductive member;
 when the functional device is located at the first position, the conductive terminal on the first end side is located on the outer side of the housing;   when the functional device is located at the third position, the elastic conductive member on the second end side is located on the outer side of the housing.   
     
     
         12 . The multifunctional metal detector according to  claim 10 , wherein the second coupling assembly comprises:
 a support, the support being disposed on the housing, the support defining a hidden groove, wherein the functional device is disposed in the hidden groove at the first position and the third position; and   a control mechanism, the control mechanism being connected to the functional device to lock the functional device in the hidden groove at the first position and the third position, and to unlock the functional device at the second position.   
     
     
         13 . The multifunctional metal detector according to  claim 12 , wherein the second coupling assembly further comprises a coupling interface formed in the control circuit board, and the coupling interface is connected to the conductive terminal when the functional device is located at the third position. 
     
     
         14 . The multifunctional metal detector according to  claim 12 , wherein the support has a second through hole, the functional device has a first clamping groove and a second clamping groove capable of being opposite to the position of the second through hole, the first clamping groove and the second clamping groove are oppositely disposed on two opposite sides of the functional device, and the control mechanism comprises:
 a lever, the lever being hinged to the support, one end of the lever forming a key portion and the other end of the lever forming a clamping block corresponding to the second through hole in position and shape; and   an elastic member, the elastic member being disposed between a push-button switch and a bracket so as to move the lever between a locked position for locking the functional device and an unlocked position for unlocking the functional device, wherein the elastic conductive member forms a telescopic conductive post;   when the lever is located at the locked position, the lever enables the clamping block to pass through the second through hole under the action of the elastic member to normally stop against the first clamping groove or the second clamping groove;   when the lever is located at the unlocked position, the functional device is pushed out of the hidden groove under the action of the telescopic conductive post.   
     
     
         15 . The multifunctional metal detector according to  claim 1 , wherein the functional device is at least one of an ambient temperature detection device, an ambient humidity detection device, a tape measure device, a lighting device, a thermal imaging device, a laser distance measuring device, a laser marking device, an endoscope device, a thickness measuring device, a moisture content detection device, a gas detection device, a roller distance measuring device or a brake fluid water content detection device. 
     
     
         16 . The multifunctional metal detector according to  claim 1 , wherein the wall detection circuit comprises:
 at least one transmitting coil; and   at least one receiving coil system, the receiving coil system being inductively coupled to the transmitting coil, the receiving coil system comprising at least one first receiving coil and at least one second receiving coil located in the same plane of the control circuit board, wherein the transmitting coil forms a projection in the plane, the first receiving coil contains the projection in a region formed by the plane, the second receiving coil is arranged in an open shape in the region formed by the plane around the projection, and the first receiving coil and the second receiving coil are wound and arranged in the same direction and electrically connected to each other.   
     
     
         17 . A multifunctional metal detector, comprising a housing and a control circuit board and a wall detection circuit mounted in the housing, comprising:
 at least one first coupling assembly capable of being connected to the control circuit board, the first coupling assembly being constructed for detachably coupling and connecting at least one functional device to the multifunctional metal detector; and   at least one second coupling assembly capable of being connected to the control circuit board, the second coupling assembly being disposed in the housing, at least another functional device being constructed to be movably switched between a first position, a second position and a third position under the action of the second coupling assembly, and when the functional device is located at the first position, the functional device being integrally placed inside the housing; when the functional device is located at the second position, the functional device being integrally placed outside the housing; when the functional device is located at the third position, the functional device being placed reversely in the housing and at least a part of the functional device extending out of the housing, wherein the functional device is used for providing other functions different from metal detection.   
     
     
         18 . The multifunctional metal detector according to  claim 17 , wherein the first coupling assembly comprises:
 an insert portion, the insert portion being disposed on one of the multifunctional metal detector and the functional device; and   an accommodating portion, the accommodating portion being disposed on the other one of the multifunctional metal detector and the functional device and being capable of accommodating the insert portion;   when the insert portion is accommodated by the accommodating portion, the insert portion and the accommodating portion being limited to each other and electrically connected so that the functional device is connected to the multifunctional metal detector.   
     
     
         19 . The multifunctional metal detector according to  claim 17 , wherein the second coupling assembly comprises:
 a support, the support being disposed on the housing, the support defining a hidden groove, wherein the functional device is disposed in the hidden groove at the first position and the third position; and   a control mechanism, the control mechanism being connected to the functional device to lock the functional device in the hidden groove at the first position and the third position, and to unlock the functional device at the second position.   
     
     
         20 . The multifunctional metal detector according to  claim 19 , wherein the support has a second through hole, the functional device has a first clamping groove and a second clamping groove capable of being opposite to the position of the second through hole, the first clamping groove and the second clamping groove are oppositely disposed on two opposite sides of the functional device, and the control mechanism comprises:
 a lever, the lever being hinged to the support, one end of the lever forming a key portion and the other end of the lever forming a clamping block corresponding to the second through hole in position and shape; and   an elastic member, the elastic member being disposed between a push-button switch and a bracket so as to move the lever between a locked position for locking the functional device and an unlocked position for unlocking the functional device;   when the lever is located at the locked position, the lever enables the clamping block to pass through the second through hole under the action of the elastic member to normally stop against the first clamping groove or the second clamping groove;   when the lever is located at the unlocked position, the functional device is pushed out of the hidden groove under the action of the telescopic conductive post.