Handheld metal detector

Abstract

The utility model relates to the technical field of metal detectors, in particular to a handheld metal detector, which comprises a handheld metal detector body and a bolt consisting of a head part and a screw rod, the handheld metal detector body comprises a probe with a built-in sensor, a handle and a control switch, an external sleeve is sleeved on the outer side of the handle, and the external sleeve is sleeved on the outer side of the handle. One end of the handle is fixedly connected with a positioning block, the inner side of the positioning block is provided with a positioning hole, and the inner side of the positioning hole is provided with a screw rod of a bolt. The screw rod of the bolt penetrates through the screw hole and the positioning hole to be in threaded connection with the nut, positioning of the external connecting sleeve is achieved, the length of the handle can be increased through the external connecting sleeve, and the problem that a handheld metal detector is inconvenient to detect a far area is solved.

Description

Technical Field

[0001] This utility model relates to the field of metal detector technology, specifically a handheld metal detector. Background Technology

[0002] Handheld metal detectors are commonly used portable detection devices widely used in fields such as archaeology, geological exploration, and security checks. Through internal sensors and circuits, handheld metal detectors can detect the presence of metal objects. When the detector's probe approaches a metal object, the sensor generates a magnetic field. If the metal object is in the magnetic field, it will form an eddy current. This eddy current, in turn, affects the magnetic field, thus being detected by the detector.

[0003] Common handheld metal detectors typically consist of a probe and a handle. When using a handheld metal detector, the hand holds the handle and brings the probe close to or scans areas suspected of containing metal objects. However, the handle has a limited length, making it inconvenient to detect areas at a distance. Therefore, a handheld metal detector is proposed to address the above problem. Utility Model Content

[0004] The purpose of this invention is to provide a handheld metal detector to solve the problem that handheld metal detectors are not convenient for detecting areas at a distance.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A handheld metal detector includes a handheld metal detector body and a bolt consisting of a head component and a screw. The handheld metal detector body includes a probe with a built-in sensor, a handle, and a control switch. The handle is rotatably connected to one side of the probe. The control switch is embedded in the inner side of the handle. An outer sleeve is fitted onto the outer side of the handle. A positioning block is fixedly connected to one end of the handle. A positioning hole is formed on the inner side of the positioning block. The screw of the bolt is provided on the inner side of the positioning hole. A nut is threaded onto one end of the bolt. A plurality of evenly arranged threaded holes are formed on the inner side of the outer sleeve. The screw of the bolt passes through the threaded holes. A through groove is formed on one side of the outer sleeve.

[0007] Preferably, the radius of the cross-sectional circle of the screw hole is equal to the radius of the cross-sectional circle of the positioning hole, and some of the screw holes and the through groove are connected.

[0008] Preferably, a washer is fitted onto the outer side of the bolt thread, the washer is disposed between the bolt head and the outer sleeve, the washer is in contact with the bolt head and the outer sleeve, and the outer diameter of the washer is greater than the width of the through groove.

[0009] Preferably, a positioning groove is provided on one side of the outer sleeve, and the positioning block is engaged inside the positioning groove.

[0010] Preferably, the inner side of the outer sleeve has a number of evenly spaced ventilation holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, a structure consisting of an outer sleeve, a positioning block, a positioning hole, a bolt, a nut, and a screw hole is used to attach a movable outer sleeve to the outside of the handheld metal detector body. The bolt thread passes through the screw hole and the positioning hole in the positioning block, and the bolt thread is connected to the nut, thereby positioning the outer sleeve. The outer sleeve can extend the length of the handle in the handheld metal detector body, solving the problem that handheld metal detectors are not convenient for detecting areas at a distance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the installation structure of the outer sleeve of this utility model;

[0015] Figure 3 This utility model Figure 2 A schematic diagram of the structure at point A;

[0016] Figure 4 This is a schematic diagram of the structure of the handheld metal detector body of this utility model;

[0017] Figure 5 This is a cross-sectional view of the outer sleeve of this utility model.

[0018] In the diagram: 1. Handheld metal detector body; 101. Probe; 102. Handle; 103. Control switch; 2. Outer sleeve; 3. Positioning block; 4. Positioning hole; 5. Bolt; 6. Nut; 7. Washer; 8. Screw hole; 9. Vent hole; 10. Through groove; 11. Positioning groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0022] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0023] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0024] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0025] Please see Figure 1-5 This utility model provides a technical solution:

[0026] A handheld metal detector includes a handheld metal detector body 1 and a bolt 5 consisting of a head component and a screw. The handheld metal detector body 1 includes a probe 101 with a built-in sensor, a handle 102, and a control switch 103. The handle 102 is rotatably connected to one side of the probe 101. The control switch 103 is embedded in the inner side of the handle 102. An outer sleeve 2 is sleeved on the outer side of the handle 102. A positioning block 3 is fixedly connected to one end of the handle 102. A positioning hole 4 is opened in the inner side of the positioning block 3. The screw of the bolt 5 is provided in the inner side of the positioning hole 4. A nut 6 is threadedly connected to one end of the bolt 5. A plurality of evenly arranged screw holes 8 are opened in the inner side of the outer sleeve 2. The screw of the bolt 5 passes through the screw holes 8. A through groove 10 is opened on one side of the outer sleeve 2. This arrangement allows the length of the handle 102 to be extended through the outer sleeve 2.

[0027] The radius of the cross-sectional circle of the screw hole 8 is equal to that of the cross-sectional circle of the positioning hole 4. Part of the screw hole 8 is connected to the through groove 10. This arrangement allows the screw of the bolt 5 to pass through the screw hole 8, the positioning hole 4, and the through groove 10. A washer 7 is sleeved on the outside of the bolt 5. The washer 7 is placed between the head of the bolt 5 and the outer sleeve 2. The washer 7 fits against the head of the bolt 5 and the outer sleeve 2. The outer diameter of the washer 7 is larger than the width of the through groove 10. This arrangement prevents the head of the bolt 5 from entering the through groove 10, making it easy to remove the bolt 5. A positioning groove 11 is opened on one side of the outer sleeve 2. The positioning block 3 is engaged inside the positioning groove 11. This arrangement facilitates the positioning of the positioning block 3. Ventilation holes 9 are evenly arranged on the inner side of the outer sleeve 2. There are several ventilation holes 9 in total. This arrangement allows the handle 102 to circulate with air and dissipate heat through the ventilation holes 9.

[0028] Workflow: All electrical appliances in this invention are equipped with an external power supply or a built-in battery. When using the handheld metal detector body 1 to detect metal in a distant area, rotate the nut 6 to move it away from the outer sleeve 2. Then drag the head of the bolt 5 to disengage the bolt from the screw hole 8 and the positioning hole 4 in the positioning block 3. At this point, the washer 7 can be removed. Then drag the outer sleeve 2 to make it slide relative to the handle 102 away from the probe 101. The positioning block 3 will disengage from the positioning groove 11, and the control switch 103 will slide inside the through groove 10, so that the outer sleeve 2 will not affect the use of the control switch 103. When the outer sleeve 2 moves to the appropriate position, the washer 7 is attached to the outer sleeve 2 and the washer 7 is placed on the outside of the through groove 10. The position of the outer sleeve 2 is continuously and slightly adjusted so that the bolt 5 can pass through the through groove 10, the positioning hole 4 and the screw hole 8 opened in the positioning block 3 in sequence, and the head of the bolt 5 is attached to the washer 7. Then the nut 6 is attached to the bolt 5. The rod is threaded to position the outer sleeve 2. The outer diameter of the washer 7 is larger than the width of the through groove 10, so that the head of the bolt 5 will not enter the through groove 10, making it easy to remove the bolt 5. The washer 7 can also improve the stability and reliability of the connection between the bolt 5 and the outer sleeve 2. After the position of the outer sleeve 2 is adjusted, the handheld metal detector body 1 can be started by controlling the switch 103. Then, the probe 101 is brought close to or scanned by the outer sleeve 2 and the handle 102 together. When the probe 101 of the handheld metal detector body 1 is close to the metal object, the sensor built into the probe 101 will generate a magnetic field. If the metal object is in the magnetic field, it will form an eddy current. This eddy current will affect the magnetic field and be detected by the handheld metal detector body 1. The circuit inside the handle 102 of the handheld metal detector body 1 will generate heat over time, which will cause some heat to accumulate inside the handle 102. The handle 102 can circulate and dissipate heat with the air through the vent 9.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hand-held metal detector comprising a hand-held metal detector body (1) and a screw bolt (5) consisting of a head part and a screw rod, characterized in that: The handheld metal detector body (1) includes a probe (101) with built-in sensors, a handle (102) and a control switch (103), one side of the probe (101) is rotatably connected with the handle (102), the inner side of the handle (102) is embedded with the control switch (103), the outer side of the handle (102) is sleeved with an external sleeve (2), one end of the handle (102) is fixedly connected with a positioning block (3), the inner side of the positioning block (3) is provided with a positioning hole (4), the inner side of the positioning hole (4) is provided with a screw rod of a bolt (5), one end of the bolt (5) is threadedly connected with a nut (6), the inner side of the external sleeve (2) is provided with a plurality of evenly arranged screw holes (8), the screw rod of the bolt (5) penetrates the screw holes (8), one side of the external sleeve (2) is provided with a through groove (10).

2. A hand-held metal detector according to claim 1, characterised in that: The cross-sectional circle radius of the screw hole (8) is equal to the cross-sectional circle radius of the positioning hole (4), and part of the screw hole (8) is arranged in communication with the through groove (10).

3. A hand-held metal detector according to claim 1, characterized in that: The outer side of the screw rod of the bolt (5) is sleeved with a gasket (7), the gasket (7) is arranged between the head part of the bolt (5) and the external sleeve (2), the gasket (7) is attached to the head part of the bolt (5) and the external sleeve (2), and the outer diameter of the gasket (7) is greater than the groove width of the through groove (10).

4. A hand-held metal detector according to claim 1, characterized in that: One side of the external sleeve (2) is provided with a positioning groove (11), and the positioning block (3) is clamped on the inner side of the positioning groove (11).

5. A hand-held metal detector according to claim 1, wherein: The inner side of the external sleeve (2) is provided with evenly arranged air holes (9), and the number of the air holes (9) is several.

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