A hand-held metal detector

Abstract

The application discloses a handheld metal detector and relates to the technical field of detectors; in order to solve the problem of convenience; specifically comprising a detection disc, a telescopic assembly, a rotary locking mechanism, a handle and an arm support, the detection disc is rotatably connected and lockable mounted at the bottom of the telescopic assembly, a plurality of rotary locking mechanisms are mounted on the outer side of the telescopic assembly and are used for locking the length of the telescopic assembly, the handle and the arm support are both slidably mounted above the telescopic assembly, the handle is located on the inner side of the arm support, and the handle and the arm support are respectively locked to the outer wall of the telescopic assembly through a set of cam locking mechanisms. The application is composed of five parts, the telescopic assembly can be telescopic, and can also rotate and lock relative to the detection disc, and the handle and the arm support can both adjust the position relative to the telescopic assembly, so that the angle and the length can be adjusted in multiple ways, and the convenience of use is increased.

Description

Technical Field

[0001] This invention relates to the field of strength testing technology, and more particularly to a handheld metal detector. Background Technology

[0002] A metal detector is a device used to detect metallic objects. Its working principle is based on the reaction of metals to electromagnetic fields. When a metal detector approaches a metallic object, the magnetic field inside the object changes, triggering the detector to emit an alarm or indication signal.

[0003] The main components of a metal detector typically include a device that generates a magnetic field (such as an electromagnetic coil), a sensor that detects changes in the magnetic field, and a signal processor. When a metal object enters the detector's detection range, it interferes with the magnetic field generated by the detector, causing a change in the magnetic field. This change is captured by the sensor and converted into an electrical signal, which is then processed by the signal processor to ultimately trigger an alarm or display the location of the metal object.

[0004] A search revealed Chinese patent publication number CN209656903U, which discloses a metal detector comprising a metal probe, a display module, a circuit board, an outer casing, a battery compartment, a sealed bottom cover, a metal detector button, and a soft rubber body. The outer casing houses the metal probe, display module, and circuit board; the metal probe is connected to the circuit board, and the display module is also connected to the circuit board. The metal detector button is located in a hollowed-out area of ​​the outer casing. The battery compartment is located at one end of the outer casing, and the other end of the outer casing is connected to the sealed bottom cover. The soft rubber body is disposed on the outside of the outer casing and is fitted to the outer casing.

[0005] The aforementioned patent has the following shortcomings: it cannot achieve multi-angle adjustment of the detector's angle, length, and gripping position, thus limiting its use. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a handheld metal detector.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A handheld metal detector includes a detection disc, a telescopic assembly, a rotary locking mechanism, a handle, and an arm support.

[0009] The probe disk is rotatably connected and lockably mounted on the bottom of the telescopic assembly. Multiple rotary locking mechanisms are mounted on the outside of the telescopic assembly and are used to lock the length of the telescopic assembly. The handle and the arm bracket are slidably mounted on the top of the telescopic assembly. The handle is located on the inside of the arm bracket, and the handle and the arm bracket are respectively locked to the outer wall of the telescopic assembly by a set of cam locking mechanisms.

[0010] Preferably, the telescopic assembly includes a lower shaft, a first middle shaft, a second middle shaft, and an upper shaft that are slidably connected from bottom to top. The rotary locking mechanism is provided in three sets, which are respectively located at the connection points between the lower shaft and the first middle shaft, the first middle shaft and the second middle shaft, and the second middle shaft and the upper shaft. The top end of the upper shaft is fitted with a tail plug.

[0011] Furthermore: the inner walls of the central axis one and the central axis two are provided with symmetrical and outwardly protruding guide ribs, and the length of the guide ribs on the inner wall of the central axis one is less than the length of the central axis one. The inner wall of the central axis one near the top is not provided with guide ribs, and the inner and outer walls of the upper axis are provided with outwardly protruding guide ribs.

[0012] Based on the aforementioned scheme: the rotary locking mechanism includes a locking ring, a rotary lock outer shaft, and a rotary lock inner shaft. The three rotary lock inner shafts are respectively fixed to the outer walls of the first central shaft, the second central shaft, and the upper shaft. The rotary lock outer shaft is threaded to the outer wall of the rotary lock inner shaft. A rib is provided on the inner side of the bottom of the rotary lock outer shaft. The locking ring is fitted into the rib on the inner side of the locking ring through a groove on its outer side. The locking ring is wedge-shaped. The rotary lock inner shaft is fitted into the outer wall of the locking ring through a flared opening at its bottom.

[0013] A better option among the aforementioned solutions is that the outer wall of the outer shaft of the rotary lock is fixed with a silicone anti-slip sleeve.

[0014] As a further aspect of the present invention: a liner is provided on the top outer side of the lower shaft, the first middle shaft, and the second middle shaft, and a guide groove matching the guide rib is formed on the outer side of the liner.

[0015] Meanwhile, the top of the lower shaft and the top of the middle shaft are both circular cross sections.

[0016] As a preferred embodiment of the present invention: a through hole is provided at the end of the lower shaft and on one side of the probe disk, a locking screw is passed through the through hole, a locking nut is threaded to the end of the locking screw, and a silicone washer is provided on the mating end face of the locking screw and the through hole and the mating end face of the locking nut and the through hole, and the locking screw is shaped like a "7".

[0017] Meanwhile, both the handle and the arm support are fitted to the outer wall of the upper shaft through holes provided in their inner walls, and the cross-section of the holes matches the cross-section of the upper shaft.

[0018] The cam locking mechanism includes a pressure plate movably mounted on the inner wall of the handle and the arm support and in contact with the outer wall of the upper shaft, and a cam wrench rotatably connected to one side of the handle and the arm support via a positioning pin. The cam wrench is in contact with and limited by the pressure plate.

[0019] As a preferred embodiment of the present invention: the inner wall of the handle is provided with a positioning hole, and a metal detection controller is installed on the inner wall of the positioning hole. The metal detection controller includes a user interface, a speaker, a headphone jack, a battery, a processor, an operation panel, and a socket for connecting the detection disk.

[0020] A hand grip is provided on one side of the handle;

[0021] The outer wall of the arm support is fitted with straps and a probe positioning plate.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. The present invention consists of five parts. The telescopic component can extend and retract while rotating and locking relative to the detection disk. The handle and the arm support can be adjusted in position relative to the telescopic component, thereby realizing multiple adjustments of angle and length and increasing the convenience of use.

[0024] 2. In this invention, by providing outwardly protruding guide ribs on the inner side of the cross-sections of the first central shaft, the second central shaft, and the upper shaft, and by configuring matching linings on the outer side of the cross-sections of the lower shaft, the first central shaft, and the second central shaft at the guide ribs, it is possible to prevent them from rotating relative to each other and increase the stability of use.

[0025] 3. In this invention, the lower shaft and the middle shaft can rotate relative to each other after being retracted to their smallest positions. When extended, the remaining parts overlap, causing the guide ribs and guide grooves to cooperate with each other and not rotate relative to each other. This adds a rotation adjustment function while making the locking operation convenient. Attached Figure Description

[0026] Figure 1 A 3D view of a handheld metal detector;

[0027] Figure 2 A side view of a handheld metal detector in its extended state;

[0028] Figure 3 A side view of a handheld metal detector in its retracted state;

[0029] Figure 4 An exploded view of a handheld metal detector;

[0030] Figure 5 A side cross-sectional view of a handheld metal detector;

[0031] Figure 6A cross-sectional view of a rotary locking mechanism for a handheld metal detector;

[0032] Figure 7 This is a schematic diagram of the internal structure of a telescopic component of a handheld metal detector.

[0033] Figure 8 This is a schematic diagram of the guide ribs on the outer wall of the upper shaft of a handheld metal detector.

[0034] In the diagram: 10. Detector plate; 11. Locking screw; 12. Locking nut; 13. Silicone washer; 20. Telescopic assembly; 21. Lower shaft; 22. Central shaft one; 23. Central shaft two; 24. Upper shaft; 25. Tail plug; 30. Rotary locking mechanism; 31. Locking ring; 32. Silicone anti-slip sleeve; 33. Rotary lock outer shaft; 34. Liner; 35. Rotary lock inner shaft; 40. Handle; 41. Grip; 42. Pressure plate; 43. Cam wrench; 44. Positioning pin; 50. Arm bracket; 51. Strap; 52. Detector rod positioning plate; 60. Metal detection controller. Detailed Implementation

[0035] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] Example 1:

[0038] A handheld metal detector, such as Figures 1-8 As shown, the device includes a probe disk 10, a telescopic assembly 20, a rotary locking mechanism 30, a handle 40, and an arm support 50. The probe disk 10 is rotatably connected to and lockably mounted on the bottom of the telescopic assembly 20. Multiple rotary locking mechanisms 30 are mounted on the outside of the telescopic assembly 20 and are used to lock the length of the telescopic assembly 20. The handle 40 and the arm support 50 are slidably mounted on the top of the telescopic assembly 20. The handle 40 is located on the inside of the arm support 50, and the handle 40 and the arm support 50 are respectively locked to the outer wall of the telescopic assembly 20 by a set of cam locking mechanisms.

[0039] When in use, the length of the telescopic component 20 can be adjusted according to the user's height and usage habits, thereby adjusting the length of the entire detector. After adjustment, the locking mechanism 30 is rotated to lock it. Then, the positions of the handle 40 and the arm support 50 are adjusted. After adjustment, one hand can work with the arm support 50 to carry out the detection operation.

[0040] The telescopic assembly 20 includes a lower shaft 21, a first middle shaft 22, a second middle shaft 23, and an upper shaft 24 that are slidably connected from bottom to top. The rotary locking mechanism 30 is provided in three sets, which are located at the connection points of the lower shaft 21 and the first middle shaft 22, the first middle shaft 22 and the second middle shaft 23, and the second middle shaft 23 and the upper shaft 24, respectively. The top end of the upper shaft 24 is fitted with a tail plug 25.

[0041] To address the torsion prevention issues of the lower shaft 21, middle shaft 22, middle shaft 23, and upper shaft 24, their cross-sections can be configured as non-circular structures. In this embodiment, the inner walls of middle shaft 22 and middle shaft 23 are preferably provided with mutually symmetrical and outwardly protruding guide ribs, and the length of the guide ribs on the inner wall of middle shaft 22 is less than the length of middle shaft 22. The inner wall of middle shaft 22 near the top is not provided with guide ribs, and both the inner and outer walls of the upper shaft 24 are provided with outwardly protruding guide ribs.

[0042] By setting guide ribs and linings 34 that match each other sequentially on the lower shaft 21, middle shaft one 22, middle shaft two 23 and upper shaft 24, it is possible to prevent them from twisting to each other.

[0043] To solve the locking problem, the rotary locking mechanism 30 includes a locking ring 31, a rotary lock outer shaft 33, and a rotary lock inner shaft 35. The three rotary lock inner shafts 35 are respectively fixed to the outer walls of the first central shaft 22, the second central shaft 23, and the upper shaft 24. The rotary lock outer shaft 33 is threaded to the outer wall of the rotary lock inner shaft 35. A rib is provided on the inner side of the bottom of the rotary lock outer shaft 33. The locking ring 31 is wedge-shaped and fits into the rib on the inner side of the locking ring 31 through a groove on its outer side. The rotary lock inner shaft 35 fits into the outer wall of the locking ring 31 through a flared opening at its bottom.

[0044] A silicone anti-slip sleeve 32 is fixed to the outer wall of the rotary lock outer shaft 33.

[0045] The lower shaft 21, the first middle shaft 22, and the second middle shaft 23 are provided with a liner 34 on the outer side of the top, and a guide groove matching the guide rib is formed on the outer side of the liner 34.

[0046] When the outer shaft 33 of the rotary lock is not tightened, the locking ring 31 is not attached to the outer side of the lower shaft 21, the first middle shaft 22, and the second middle shaft 23. At this time, the lower shaft 21 and the first middle shaft 22, the first middle shaft 22 and the second middle shaft 23, and the second middle shaft 23 and the upper shaft 24 can slide relative to each other. When sliding to the maximum position, the locking ring 31 will block the liner 34 to prevent disengagement. When adjusting to the required length, the outer shaft 33 of the rotary lock is turned through the silicone anti-slip sleeve 32. Since the outer shaft 33 of the rotary lock is threadedly connected to the inner shaft 35 of the rotary lock, the outer shaft 33 of the rotary lock and the locking ring 31 are equivalent to a rotational connection. This causes the locking ring 31 and the inner shaft 35 of the rotary lock to move axially. The wedge shape of the locking ring 31 and the flared mouth of the inner shaft 35 of the rotary lock squeeze the locking ring 31 inward and attach it to the outer wall of the lower shaft 21, the first middle shaft 22, and the second middle shaft 23, and lock it by friction.

[0047] The top of the central shaft 22 has a circular cross-section without guide ribs. Therefore, when the lower shaft 21 and the central shaft 22 are contracted to their minimum position, they can rotate relative to each other. When extended, the remaining parts will overlap, so that the guide ribs and guide grooves cooperate with each other and cannot rotate relative to each other.

[0048] Both the end of the lower shaft 21 and one side of the probe disk 10 are provided with through holes. A locking screw 11 passes through the through hole. The end of the locking screw 11 is connected to a locking nut 12 by a thread. Silicone washers 13 are provided on the mating end face of the locking screw 11 and the through hole and the mating end face of the locking nut 12 and the through hole.

[0049] The locking screw 11 is shaped like a "7".

[0050] When the locking screw 11 and locking nut 12 are loose, the probe disk 10 can rotate relative to the lower shaft 21. When the locking screw 11 and locking nut 12 are tightened, the silicone gasket 13 will be pressed, thereby using friction to fix the probe disk 10 to the lower shaft 21, preventing it from rotating.

[0051] Both the handle 40 and the arm support 50 are fitted to the outer wall of the upper shaft 24 through holes provided in their inner walls, and the cross-section of the holes matches the cross-section of the upper shaft 24.

[0052] The cam locking mechanism includes a pressure plate 42 movably mounted on the inner wall of the handle 40 and the arm support 50 and in contact with the outer wall of the upper shaft 24, and a cam wrench 43 rotatably connected to one side of the handle 40 and the arm support 50 via a positioning pin 44. The cam wrench 43 is in contact with and limited by the pressure plate 42.

[0053] When the cam wrench 43 rotates, the protruding structure of the cam wrench 43 can limit the pressure plate 42, so that the pressure plate 42 is tightly attached to the outer wall of the upper shaft 24, thereby locking the handle 40, the arm support 50 and the upper shaft 24.

[0054] The inner wall of the handle 40 is provided with a positioning hole, and a metal detection controller 60 is installed on the inner wall of the positioning hole. The metal detection controller 60 includes a user interface, a speaker, a headphone jack, a battery, a processor, an operation panel, and a socket for connecting the detection disk 10.

[0055] A handshake 41 is provided on one side of the handle 40.

[0056] The outer wall of the arm support 50 is fitted with straps 51 and probe positioning pieces 52.

[0057] In this embodiment, the length of the telescopic component 20 can be adjusted according to the user's height and usage habits to adjust the length of the entire detector. After adjustment, it is locked by rotating the locking mechanism 30. Then, the positions of the handle 40 and the arm support 50 are adjusted. After adjustment, one hand can cooperate with the arm support 50 to perform the detection operation. When the outer shaft 33 of the rotary lock is not tightened, the locking ring 31 is not attached to the outside of the lower shaft 21, the first middle shaft 22, and the second middle shaft 23. At this time, the lower shaft 21 and the first middle shaft 22, the first middle shaft 22 and the second middle shaft 23, and the second middle shaft 23 and the upper shaft 24 can slide relative to each other. When sliding to the maximum position, the locking ring 31 will block the liner 34 to prevent disengagement. When adjusting to the required length, the outer shaft 33 of the rotary lock is turned by rotating the silicone anti-slip sleeve 32. Since the outer shaft 33 of the rotary lock and the inner shaft 35 of the rotary lock are threaded together... Next, the outer shaft 33 of the rotary lock and the locking ring 31 are rotatably connected, which causes the locking ring 31 and the inner shaft 35 of the rotary lock to move axially. The wedge shape of the locking ring 31 and the flared opening of the inner shaft 35 of the rotary lock squeeze the locking ring 31 inward and make it fit against the outer wall of the lower shaft 21, the first middle shaft 22, and the second middle shaft 23, and lock it by friction. When the locking screw 11 and the locking nut 12 are loose, the probe plate 10 can rotate relative to the lower shaft 21. When the locking screw 11 and the locking nut 12 are tightened, the silicone gasket 13 will be pressed, and the probe plate 10 will be fixed to the lower shaft 21 by friction and cannot rotate. When the cam wrench 43 rotates, the protruding structure of the cam wrench 43 can limit the pressure plate 42, so that the pressure plate 42 fits tightly against the outer wall of the upper shaft 24, and the handle 40, the arm support 50 and the upper shaft 24 are locked.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A handheld metal detector, comprising a detection disc (10), a telescopic assembly (20), a rotary locking mechanism (30), a handle (40), and an arm support (50), characterized in that, The probe disk (10) is rotatably connected and lockably installed at the bottom of the telescopic assembly (20). Multiple rotary locking mechanisms (30) are installed on the outside of the telescopic assembly (20) and are used to lock the length of the telescopic assembly (20). The handle (40) and the arm support (50) are slidably installed on the top of the telescopic assembly (20). The handle (40) is located on the inside of the arm support (50), and the handle (40) and the arm support (50) are respectively locked to the outer wall of the telescopic assembly (20) by a set of cam locking mechanisms.

2. A handheld metal detector according to claim 1, characterized in that, The telescopic assembly (20) includes a lower shaft (21), a middle shaft one (22), a middle shaft two (23), and an upper shaft (24) that are slidably connected from bottom to top. The rotary locking mechanism (30) is provided in three sets. The three sets of rotary locking mechanisms (30) are respectively located at the connection between the lower shaft (21) and the middle shaft one (22), the middle shaft one (22) and the middle shaft two (23), and the middle shaft two (23) and the upper shaft (24). The top end of the upper shaft (24) is fitted with a tail plug (25).

3. A handheld metal detector according to claim 2, characterized in that, The inner walls of the central axis one (22) and the central axis two (23) are provided with symmetrical and outwardly protruding guide ribs, and the length of the guide ribs on the inner wall of the central axis one (22) is less than the length of the central axis one (22). The inner wall of the central axis one (22) near the top is not provided with guide ribs. The inner and outer walls of the upper axis (24) are provided with outwardly protruding guide ribs.

4. A handheld metal detector according to claim 1, characterized in that, The rotary locking mechanism (30) includes a locking ring (31), a rotary lock outer shaft (33), and a rotary lock inner shaft (35). The three rotary lock inner shafts (35) are respectively fixed to the outer walls of the central shaft one (22), the central shaft two (23), and the upper shaft (24). The rotary lock outer shaft (33) is threaded to the outer wall of the rotary lock inner shaft (35). The bottom inner side of the rotary lock outer shaft (33) is provided with a rib. The locking ring (31) is fitted with the rib on the inner side of the locking ring (31) through a groove on its outer side. The locking ring (31) is wedge-shaped. The rotary lock inner shaft (35) is fitted with the outer wall of the locking ring (31) through a flared opening at its bottom.

5. A handheld metal detector according to claim 4, characterized in that, The outer wall of the rotary lock outer shaft (33) is fixed with a silicone anti-slip sleeve (32).

6. A handheld metal detector according to claim 2, characterized in that, The lower shaft (21), the first middle shaft (22), and the second middle shaft (23) are provided with a liner (34) on the outer side of the top, and a guide groove matching the guide rib is formed on the outer side of the liner (34).

7. A handheld metal detector according to claim 2, characterized in that, The top of the lower shaft (21) and the top of the middle shaft (22) are both circular cross sections.

8. A handheld metal detector according to claim 2, characterized in that, The lower shaft (21) and the probe disk (10) are provided with through holes. A locking screw (11) passes through the through hole. The end of the locking screw (11) is connected to a locking nut (12) by a thread. A silicone washer (13) is provided on the mating end face of the locking screw (11) and the through hole and the mating end face of the locking nut (12) and the through hole. The locking screw (11) is shaped like a "7".

9. A handheld metal detector according to claim 1, characterized in that, The handle (40) and the arm support (50) are both fitted to the outer wall of the upper shaft (24) through holes provided in their inner walls, and the cross-section of the holes matches the cross-section of the upper shaft (24). The cam locking mechanism includes a pressure plate (42) movably mounted on the inner wall of the handle (40) and the arm support (50) and in contact with the outer wall of the upper shaft (24), and a cam wrench (43) rotatably connected to one side of the handle (40) and the arm support (50) via a positioning pin (44). The cam wrench (43) is in contact with and limited by the pressure plate (42).

10. A handheld metal detector according to claim 1, characterized in that, The inner wall of the handle (40) is provided with a positioning hole, and a metal detection controller (60) is installed on the inner wall of the positioning hole. The metal detection controller (60) includes a user interface, a speaker, a headphone jack, a battery, a processor, an operation panel, and a socket for connecting the detection disk (10). A hand grip (41) is provided on one side of the handle (40); The outer wall of the arm support (50) is fitted with straps (51) and probe positioning plates (52).

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