CN211263802U - Hand-held metal detector - Google Patents

Abstract

The utility model provides a handheld metal detector, include: the device comprises a handle, a coil assembly, a front-end probe, a control unit and a battery assembly; the control unit is arranged inside the handle; the front end probe (5) is connected with the handle; the coil assembly is arranged on the front-end probe; the battery assembly is electrically connected with the control unit. The utility model discloses simple structure is light and handy, and portable can effectively detect small metal object such as pin, and detection distance reaches more than 4 centimetres.

Description

Hand-held metal detector

Technical Field

The utility model relates to a metal detector field specifically, relates to a handheld metal detector.

Background

Hand-held metal detectors are designed to detect metal objects carried within a person or object. The method is widely applied to the fields of industrial production, security inspection, entertainment and the like. The portable metal detection device can detect metal objects such as a knife and a pen carried by a person in packages, luggage, letters, fabrics and the like. In a conventional handheld metal detector disclosed in patent document CN208506265U, an electromagnetic coil is disposed inside a front end of a metal detector housing, a main control circuit board, a buzzer and a rechargeable lithium battery are disposed inside a rear end of the metal detector housing, the main control circuit board is electrically connected to the electromagnetic coil, the buzzer and the rechargeable lithium battery, and the handheld metal detector further includes a non-contact capacitive sensing switch; the non-contact capacitance inductive switch is arranged in the rear end of the metal detector shell and is arranged on the back of the main control circuit board, and the non-contact capacitance inductive switch is electrically connected with the main control circuit board through a lead.

However, most of the traditional handheld metal detectors have low detection sensitivity, and have the defects of incapability of detecting objects with small metal content such as pins or inconvenience in detection due to short detection distance.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a handheld metal detector.

According to the utility model provides a pair of handheld metal detector, include: the device comprises a handle 1, a coil assembly 3, a front end probe 5, a control unit 8 and a battery assembly;

the control unit 8 is arranged inside the handle 1;

the front end probe 5 is connected with the handle 1;

the coil assembly 3 is arranged on the front end probe 5;

the battery assembly is electrically connected to the control unit 8.

Preferably, the handle 1 is provided with a power switch button 9.

Preferably, the coil assembly 3 is an air-core loop inductive antenna coil.

Preferably, the hand-held metal detector further comprises: a battery case 12;

the battery case 12 is connected to the handle 1.

Preferably, a second battery gasket 7 is provided on the battery case 12.

Preferably, a first battery pad 2 is provided between the battery case 12 and the control unit 8.

Preferably, the hand-held metal detector further comprises: an LED indicator lamp 4;

the LED indicator lamp 4 is electrically connected with the control unit 8.

Preferably, the hand-held metal detector further comprises: a buzzer sound hole 13; the buzzer sounding hole 13 is arranged on the handle 1.

Preferably, a battery cover 6 is provided on the battery case 12.

Preferably, the coil assembly 3 is securely connected to the front end probe 5.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses simple structure is light and handy, and portable can effectively detect small metal object such as pin, and detection distance reaches more than 4 centimetres.

2. The utility model discloses an empty core ring inductance coils increases compensation feedback antenna coil, makes all kinds of environments of detector adaptation to can improve the stability of detector work.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is the utility model provides a hand-held metal detector overall structure sketch map.

Fig. 2 is a block diagram of the working principle of the handheld metal detector provided by the present invention.

The figures show that:

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

As shown in fig. 1 to 2, according to the present invention, a handheld metal detector comprises: the device comprises a handle 1, a coil assembly 3, a front end probe 5, a control unit 8 and a battery assembly; the control unit 8 is arranged inside the handle 1; the front end probe 5 is connected with the handle 1; the coil assembly 3 is arranged on the front end probe 5; the battery assembly is electrically connected to the control unit 8. In a preferred embodiment, during testing, a signal with a certain frequency is applied to an inductance coil of the probe, an electromagnetic field is formed around the inductance coil, when a metal to be tested enters the electromagnetic field area, induced electromotive force and induced current are generated inside the metal, so that the metal absorbs energy of the electromagnetic field emitted by the metal detector, and parameters inside the detector change, the amplifier amplifies the changed signal, and the signal processing samples the changed parameters in the sampling circuit, so as to control the alarm circuit to give an alarm. The compensation feedback antenna coil is added, so that the detector is suitable for various environments, the influence of temperature sensitivity on the detector is inhibited, and the working stability of the machine is ensured.

Further, a power switch key 9 is arranged on the handle 1; the coil assembly 3 is a hollow loop inductive antenna coil. Further comprising: a battery case 12; the battery case 12 is connected to the handle 1. The battery case 12 is provided with a second battery pad 7. In a preferred embodiment, the power switch button 9 is located at the front end of the handle 1, and its internal switch is a self-locking switch. The LED lamp 4 is positioned at the front end of the handle 1, and when a metal target is found, the LED indicating lamp is on.

Further, a first battery pad 2 is provided between the battery case 12 and the control unit 8. Further comprising: an LED indicator lamp 4; the LED indicator lamp 4 is electrically connected with the control unit 8. Further comprising: a buzzer sound hole 13; the buzzer sounding hole 13 is arranged on the handle 1. A battery cover 6 is arranged on the battery box 12; the coil assembly 3 is fixedly connected with the front end probe 5. In the preferred embodiment, the battery cover 6 is at the rear end of the interior of the handle 1, and a 9V alkaline prismatic battery is used inside the battery cover.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (10)

1. A hand-held metal detector, comprising: the device comprises a handle (1), a coil assembly (3), a front end probe (5), a control unit (8) and a battery assembly;

the control unit (8) is arranged inside the handle (1);

the front end probe (5) is connected with the handle (1);

the coil assembly (3) is arranged on the front end probe (5);

the battery assembly is electrically connected with a control unit (8).

2. The hand-held metal detector according to claim 1, characterized in that a power switch button (9) is provided on the handle (1).

3. The hand-held metal detector according to claim 1, characterized in that the coil assembly (3) is an air-loop inductive antenna coil.

4. The hand-held metal detector of claim 1, further comprising: a battery case (12);

the battery box (12) is connected with the handle (1).

5. Hand-held metal detector according to claim 4, characterised in that a second battery gasket (7) is provided on the battery compartment (12).

6. Hand-held metal detector according to claim 4, characterized in that a first battery pad (2) is arranged between the battery compartment (12) and the control unit (8).

7. The hand-held metal detector of claim 1, further comprising: an LED indicator lamp (4);

the LED indicator lamp (4) is electrically connected with the control unit (8).

8. The hand-held metal detector of claim 1, further comprising: a buzzer sound hole (13); the buzzer sounding hole (13) is arranged on the handle (1).

9. Hand-held metal detector according to claim 4, characterised in that a battery cover (6) is arranged on the battery compartment (12).

10. The hand-held metal detector according to claim 1, characterized in that the coil assembly (3) is securely connected with a front end probe (5).

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