A sounding end cap and a handheld metal detector

Abstract

The present invention provides a sounding tail cap, which includes: a waterproof speaker for generating various alarm sound combinations, and the diameter of the waterproof speaker is greater than 2 cm; a rear cover, the waterproof speaker is installed in the rear cover, and a first connecting part is provided on the rear cover, and the rear cover can be fixedly installed on the metal detector through the first connecting part; an audio connector, the waterproof speaker is electrically connected to the audio connector, and is electrically connected to the metal detector through the audio connector, so that the waterproof speaker can receive and emit the sound signal output by the metal detector; the waterproof speaker is installed in the rear cover through multiple waterproof designs, and the sounding component and the main body of the metal detector are separately designed, and the rear cover can be removed to charge the main body; when the speaker is damaged, it can be replaced separately without replacing the whole circuit board.

Description

Technical Field

[0001] The present invention relates to the technical field of metal detectors, and in particular, to a sounding end cap and a handheld metal detector. Background Art

[0002] Metal detectors are widely used in security inspections, mine detection, and recreational detection fields. The products involved in this patent are mainly about the recreational detection field. In the recreational detection field, they are mainly classified into full-size metal detectors and metal detectors in terms of size. Both types of metal detectors include a detection coil component, a signal processing part, an audible and visual vibration alarm, etc. During the detection process, the user first uses the full-size metal detector for large-area scanning. When a signal that meets the expectation is heard, the user then starts to use the metal detector to accurately locate the target.

[0003] Metal detection activities are mainly carried out in outdoor spaces such as fields and rivers. Current metal detectors will provide waterproof protection according to this characteristic. Because the full-size metal detector is relatively large in size, a diaphragm-type speaker with a diameter of 40 mm or larger is allowed to be used inside its circuit control box as a sound alarm component. Moreover, another greatest advantage is that the diaphragm speaker can emit various alarm sound combinations according to the needs of developers, such as linear alarm sounds, pulsed alarm sounds, or a mixture of both, and even can emit customized melodious music, and can also remind the user of the types of underground metals by emitting high and low pitched sounds. Conventional handheld metal detectors are relatively small in size compared to full-size metal detectors. For example, the metal detection positioning rod in a handheld metal detector is only about the size of a toothbrush, and its diameter is limited to about 4 cm according to the size of the human palm. Therefore, existing products on the market at present all use a compact beeping buzzer and hide the buzzer inside the detection main body to meet the waterproof requirement. In a handheld metal detector, the waterproof design reduces the volume of the buzzer by more than half, which is not conducive to the user hearing the alarm sound of the detector in time, and this type of buzzer can only generate a single pulsed alarm and cannot generate various alarm sounds to help the user distinguish the types of metals. Also, after the speaker is damaged, it cannot be replaced separately and the entire circuit board needs to be replaced. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a sounding end cap and a handheld metal detector.

[0005] The present invention is achieved through the following technical solutions:

[0006] On the one hand, the present invention provides a sounding end cap, which includes:

[0007] A waterproof speaker for generating various alarm sound combinations, and the diameter of the waterproof speaker is greater than 2 cm;

[0008] A rear cover, the waterproof speaker is installed inside the rear cover, and a first connecting portion is provided on the rear cover, and the rear cover can be fixedly installed on the metal detector through the first connecting portion;

[0009] An audio connector, the waterproof speaker is electrically connected to the audio connector, and is electrically connected to the metal detector through the audio connector, so that the waterproof speaker can receive and emit the sound signal output by the metal detector.

[0010] Further, the sounding tail cover further includes a protective sleeve, a first protective bracket, and a second protective bracket. The waterproof speaker is fixedly clamped between the first protective bracket and the second protective bracket. The protective sleeve is sleeved and fixed on the outer periphery of the first protective bracket and the second protective bracket. The protective sleeve is fixedly installed inside the rear cover. The protective sleeve, the first protective bracket, the second protective bracket, and the waterproof speaker are all received inside the rear cover.

[0011] Further, a clamping groove is provided on the protective sleeve. The first protective bracket includes a first clamping ring plate, and the second protective bracket includes a second clamping ring plate. The first clamping ring plate and the second clamping ring plate are in contact and are simultaneously fixedly clamped in the clamping groove.

[0012] Further, the first protective bracket further includes a docking ring plate, and a docking groove is provided on the second protective bracket. When the first protective bracket and the second protective bracket clamp and fix the waterproof speaker, the docking ring plate is inserted into the docking groove.

[0013] Further, a receiving cavity is provided inside the rear cover, and the protective sleeve is fixedly installed in the receiving cavity.

[0014] Further, the second protective bracket further includes an installation cylinder, and the audio connector penetrates through the entire installation cylinder.

[0015] On the other hand, the present invention provides a handheld metal detector including a main body and the above-mentioned sounding tail cover. A second connecting portion is provided on the main body, and the rear cover can be installed on the tail of the main body through the screwing connection between the first connecting portion and the second connecting portion.

[0016] Further, an audio output interface is further provided on the main body, and the audio connector can be inserted into the audio output interface.

[0017] Further, a waterproof ring is fixedly sleeved on the outer periphery bottom of the second connecting portion. When the first connecting portion is screwed and rotated to the bottom of the second connecting portion, the waterproof ring can be in contact with the first connecting portion.

[0018] Advantages of the present invention:

[0019] The sound - emitting tail cover and the handheld metal detector proposed by the present invention adopt a separable design. The waterproof speaker is installed inside the rear cover. In this way, the size of the speaker is not restricted by the internal space of the main unit. Larger - sized and louder speakers can be installed on the sound - emitting tail cover. Such speakers can emit various combinations of alarm sounds according to the needs of developers, such as linear alarm sounds, pulsed alarm sounds, or a mixture of both. They can even emit customized melodious music and can also remind users of the types of underground metals by emitting high - and low - pitched sounds. The separate design of the speaker from the main unit allows the main unit to be charged after removing the sound - emitting tail cover. When the speaker is damaged, the speaker can be replaced separately without disassembling and assembling the circuit board of the main unit. Description of the drawings

[0020] Figure 1 is an exploded view of the sound - emitting tail cover of the present invention;

[0021] Figure 2 is an exploded view of the sound - emitting tail cover of the present invention from another angle;

[0022] Figure 3 is a partial exploded view of the second wiring method of the sound - emitting tail cover of the present invention;

[0023] Figure 4 is a partial exploded view of the third wiring method of the sound - emitting tail cover of the present invention;

[0024] Figure 5 is a partial exploded view of another implementation manner of the sound - emitting tail cover of the present invention;

[0025] Figure 6 is a partial exploded view of another implementation manner of the sound - emitting tail cover of the present invention;

[0026] Figure 7 is a partial cross - sectional view of the sound - emitting tail cover and the main unit of the present invention;

[0027] Figure 8 is an exploded view of the handheld metal detector of the present invention;

[0028] Figure 9 is a structural schematic diagram of the handheld metal detector of the present invention;

[0029] Figure 10 is a logic diagram of the button design of the handheld metal detector of the present invention;

[0030] Figure 11 is an explanatory diagram of the linear - pulse hybrid alarm mode of the handheld metal detector of the present invention;

[0031] Figure 12 This is an explanatory diagram of high and low pulse tones of the handheld metal detector of the present invention. Specific implementation mode

[0032] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0033] Please refer to Figures 1 to 6 The present invention provides a sounding tail cover 15, which includes: a waterproof speaker 29 for generating various alarm sound combinations, and the diameter of the waterproof speaker 29 is greater than 2 cm; a rear cover 16, the waterproof speaker 29 is installed in the rear cover 16, and a first connecting portion 17 is provided on the rear cover 16, and the rear cover 16 can be fixedly installed on the metal detector through the first connecting portion 17; an audio connector 28, the waterproof speaker 29 is electrically connected to the audio connector 28, and is electrically connected to the metal detector through the audio connector 28, so that the waterproof speaker 29 can receive and emit the sound signal output by the metal detector. The sounding tail cover 15 further includes a protective collar 19, a first protective bracket 21, and a second protective bracket 24. The waterproof speaker 29 is fixedly clamped between the first protective bracket 21 and the second protective bracket 24. The protective collar 19 is sleeved and fixed on the outer periphery of the first protective bracket and the second protective bracket. The protective collar 19 is fixedly installed in the rear cover 16. The protective collar 19, the first protective bracket 21, the second protective bracket 24, and the waterproof speaker 29 are all received in the rear cover 16. A clamping groove 20 is provided on the protective collar 19. The first protective bracket 21 includes a first clamping ring plate 23, and the second protective bracket 24 includes a second clamping ring plate 26. The first clamping ring plate 23 and the second clamping ring plate 26 abut and are fixedly clamped in the clamping groove 20 at the same time. The first protective bracket 21 further includes a docking ring plate 22, and a docking groove 25 is provided on the second protective bracket 24. When the first protective bracket 21 and the second protective bracket 24 clamp and fix the waterproof speaker 29, the docking ring plate 22 is inserted into the docking groove 25. A receiving cavity 18 is provided in the rear cover 16, and the protective collar 19 is fixedly installed in the receiving cavity 18. The second protective bracket 24 further includes an installation cylinder 27, and the audio connector 28 penetrates through the entire installation cylinder 27.

[0034] In this embodiment, the waterproof speaker 29 is first placed into the second protective bracket 24, and then resin sealant is applied to the connection between the waterproof speaker 29 and the second protective bracket 24, so that the connection between the waterproof speaker 29 and the second protective bracket 24 can be sealed against water. Then, the first protective bracket 21 is fixedly covered on the waterproof speaker 29. The first engaging ring plate 23 and the second engaging ring plate 26 are engaged in the engaging groove 20 so that the protective collar 19 is sleeved on the outer perimeters of the first protective bracket 21 and the second protective bracket 24. The protective collar 19 can play a good protective role because the protective collar 19 is made of rubber material. The docking ring plate 22 is disposed at the bottom of the first protective bracket 21. The diameter of the docking ring plate 22 is slightly smaller than the diameter of the first engaging ring plate 23 and can just be inserted into the docking groove 25. In this embodiment, the audio connector 28 is an audio plug, and the sound - emitting end cap 15 can be connected to the metal detector by directly plugging the audio plug into the metal detector. The waterproof speaker 29 is a diaphragm speaker with a diameter of 2.5 cm. According to the needs of developers, it can emit various combinations of alarm sounds, such as linear alarm sounds, pulsed alarm sounds, or a mixture of both. It can even emit customized melodious music and can also remind users of the types of underground metals by emitting high - and low - pitched sounds. The top of the rear cover 16 can be designed into different shapes according to actual situations. For example, two hanging holes are provided at the top of the rear cover 16, which can facilitate the hanging of the rear cover 16.

[0035] Please refer to Figures 1 to 10 , the present invention provides a handheld metal detector including a main body 10 and the above - mentioned sound - emitting end cap 15. A second connection part 13 is provided on the main body 10. The rear cover 16 can be installed at the tail of the main body 10 by screwing between the first connection part 17 and the second connection part 13. A waterproof ring 14 is fixedly sleeved on the outer perimeter bottom of the second connection part 13. When the first connection part 17 is screwed and rotated to the bottom of the second connection part 13, the waterproof ring 14 can abut against the first connection part 17. An audio output interface 12 is also provided on the main body 10, and the audio connector 28 can be inserted into the audio output interface 12.

[0036] In this embodiment, the first connecting portion 17 and the second connecting portion 13 are provided with mating threads. Through the cooperation of the threads, the rear cover 16 can be freely installed and removed at the tail of the host 10. Since a waterproof ring 14 is provided at the outer peripheral bottom of the second connecting portion 13, when the first connecting portion 17 and the second connecting portion 13 are completely docked, the waterproof ring 14 can ensure good waterproof performance between the connection parts of the two. The audio output interface 12 is an audio socket. The audio connector 28 can be directly inserted into the audio output interface 12 to electrically connect the sounding tail cover 15 to the host 10.

[0037] Please refer to Figures 1 to 6 , in the figure, five kinds of the sounding tail covers 15 designed according to actual requirements are shown. These five kinds of sounding tail covers 15 are slightly different in internal structure and wiring method. Please refer to Figure 1 and Figure 2 , the first wiring method of the sounding tail cover 15 is: the audio connector 28 is directly electrically connected to the waterproof speaker 29. The audio connector 28 is an audio plug, and the audio output interface 12 is an audio socket. Through the cooperation of the plug and the socket, the sounding tail cover 15 can be electrically connected to the host 10. Please refer to Figure 3 , the second wiring method of the sounding tail cover 15 is: the audio connector 28 is a conducting wire, which is directly connected to the waterproof speaker 29 through the conducting wire, and then the conducting wire passes out of the mounting cylinder 27. The audio output interface 12 is also correspondingly set as a conducting wire connection end. Please refer to Figure 4 , the third wiring method of the sounding tail cover 15 is: the audio connector 28 is a spring pin electrical connector, and the audio output interface 12 is set as a corresponding connector. The spring pin connector is electrically connected to the waterproof speaker 29. Please refer to Figure 5 , the wiring method of this sounding tail cover 15 is the same as that of the first sounding tail cover 15, but there are some changes in the internal structure. Compared with the first sounding tail cover 15, the protective sleeve 19 is removed from this sounding tail cover 15, and the first protective bracket 21 and the second protective bracket 24 are directly fixedly connected by resin sealant, and then the fixedly connected structure is fixedly installed in the rear cover 16. Please refer to Figure 6 , the structure of this sounding tail cover 15 is compared with Figure 5 the structure of the sounding tail cover 15 in which the first protective bracket 21 and the second protective bracket 24 are missing. The waterproof speaker 29 is directly fixed in the rear cover 16 by resin sealant, and a connecting wire is led out from the waterproof speaker 29 to be electrically connected to the host 10.

[0038] In the hand-held metal detector proposed by the present invention, an OLED screen and LED indicators are provided on the main body 10 for displaying menu operation information and real-time detection signals. There are separate red and green LED lights on both sides to express various different information about the detection results. For example, when it shows red, it means the hand-held metal detector detects ferrous metal, and when it shows emerald green, it means the hand-held metal detector detects non-ferrous metal. Power keys, menu keys and other buttons are provided on the main body 10 for adjusting the switch and gears. As Figure 10 shown, this figure is the logical correspondence diagram of the dual-button menu logic and OLED screen display of the main body 10, and the button logic on the main body 10 is designed according to the figure shown. As Figure 11 and Figure 12 shown, it can be clearly seen from the linear pulse hybrid alarm mode illustration of the hand-held metal detector and the pulse tone high and low tone illustration the alarm mode of the hand-held metal detector proposed by the present invention. When the pulse tone is sharp and high, it indicates that non-ferrous metal is detected, and when the pulse tone is deep and low, it indicates that ferrous metal is detected. In the linear pulse hybrid alarm mode of the present hand-held metal detector, the order of linear and pulse can be reversed, that is, the long-distance target is pulse alarm and the short-distance target is linear. Similarly, the high and low tones of the pulse can also be reversed.

[0039] Of course, the present invention can also have many other implementation manners. Based on this implementation manner, other implementation manners obtained by those of ordinary skill in the art without any creative work belong to the scope protected by the present invention.

Claims

1. A sounding tail cover, characterized in that, the sounding tail cover comprises: a waterproof speaker for generating a variety of alarm sound combinations, and the diameter of the waterproof speaker is greater than 2 cm; a rear cover, the waterproof speaker is installed in the rear cover, and a first connecting part is provided on the rear cover, and the rear cover can be fixedly installed on the metal detector through the first connecting part; an audio connector, the waterproof speaker is electrically connected to the audio connector, and is electrically connected to the metal detector through the audio connector, so that the waterproof speaker can receive and emit the sound signal output by the metal detector; the sounding tail cover further comprises a protective collar, a first protective bracket and a second protective bracket, the waterproof speaker is fixedly clamped between the first protective bracket and the second protective bracket, the protective collar is sleeved and fixed on the outer periphery of the first protective bracket and the second protective bracket, the protective collar is fixedly installed in the rear cover, and the protective collar, the first protective bracket, the second protective bracket and the waterproof speaker are all accommodated in the rear cover; a clamping groove is provided on the protective collar, the first protective bracket comprises a first clamping ring plate, the second protective bracket comprises a second clamping ring plate, the first clamping ring plate and the second clamping ring plate are abutted and simultaneously fixedly clamped in the clamping groove; the first protective bracket further comprises a docking ring plate, and a docking groove is provided on the second protective bracket. When the first protective bracket and the second protective bracket clamp and fix the waterproof speaker, the docking ring plate is inserted into the docking groove.

2. The sounding tail cover according to claim 1, characterized in that, a receiving cavity is provided in the rear cover, and the protective collar is fixedly installed in the receiving cavity.

3. The sounding tail cover according to claim 1, characterized in that, the second protective bracket further comprises an installation cylinder, and the audio connector penetrates through the entire installation cylinder.

4. A handheld metal detector, characterized in that, the handheld metal detector comprises a main body and the sounding tail cover according to any one of claims 1 to 3, and a second connecting part is provided on the main body, and the rear cover can be installed on the tail of the main body through the screwing connection between the first connecting part and the second connecting part.

5. The handheld metal detector according to claim 4, characterized in that, an audio output interface is further provided on the main body, and the audio connector can be inserted into the audio output interface.

6. The handheld metal detector according to claim 4, characterized in that, a waterproof ring is fixedly sleeved on the outer peripheral bottom of the second connecting part, and when the first connecting part is screwed and rotated to the bottom of the second connecting part, the waterproof ring can be abutted against the first connecting part.

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