Underground metal detector

Abstract

The utility model relates to the technical field of metal detection, and discloses an underground metal detector, which comprises a battery compartment, the battery compartment comprises a battery placing rack, one side end of the battery placing rack is of an open structure, and the side wall of the other side end of the battery placing rack is provided with a limiting rib and a clamping ring. Battery springs are arranged in the limiting ribs and the clamping ring, the battery springs arranged in the limiting ribs are completely contained in the limiting ribs, and the limiting ribs meet the requirement that the negative electrode end of the battery cannot enter the limiting ribs, but a carbon rod part of the positive electrode end of the battery can enter the limiting ribs; the height difference between the limiting rib and the corresponding battery spring meets the requirement that a carbon rod part at the positive end of the battery can extend into the limiting rib to be in contact with the corresponding battery spring; by arranging the limiting ribs, the negative electrode end of the battery can be prevented from being in contact with the battery spring when the battery is reversely mounted, and the battery mounting structure has the advantage of high safety.

Description

Technical Field

[0001] The utility model relates to an underground metal detector, belonging to the technical field of metal detection. Background Art

[0002] An underground metal detector is a device or tool for finding underground metal objects, which can be widely used in military, security inspection, archaeology, prospecting and other fields.

[0003] In the prior art, a utility model patent with the Chinese patent authorization announcement number CN204101756U discloses an underground metal detector, which includes a housing, a display screen, a detection disc, and a detection processor, a buzzer, and a storage battery arranged in the housing. The detection processor is electrically connected to the buzzer, the display screen, and the detection disc respectively, and the storage battery supplies power to the detection processor, the detection disc, the buzzer, and the display screen. A detection disc and rollers are arranged at the bottom of the housing, a telescopic push rod is arranged at the top of the housing, a handle is arranged at the upper end of the push rod, and a display screen and a switch respectively electrically connected to the detection processor are arranged on the handle. The display screen is rotatably connected to the handle. By arranging rollers, an operator only needs to push the push rod to perform metal detection, which has the advantage of making the operation of the operator easier. However, it also has the following disadvantages: no corresponding anti-fooling measures are set in the battery installation structure. If the battery is installed in reverse, it is easy to cause a short circuit, resulting in the product being burned out. In severe cases, there may be a fire, and there is a problem of insufficient safety. Summary of the Utility Model

[0004] In order to solve the above problems existing in the prior art, the utility model provides an underground metal detector.

[0005] The technical solution of the utility model is as follows:

[0006] An underground metal detector includes a battery compartment, and the battery compartment includes a battery placement rack. One end of one side of the battery placement rack is arranged in an open structure, and limiting rib strips and snap rings are arranged on the side wall of the other end of the battery placement rack. Battery springs are arranged inside both the limiting rib strips and the snap rings. Among them, the battery spring arranged inside the limiting rib strips is completely received inside the limiting rib strips. The arrangement of the limiting rib strips satisfies that the negative electrode end of the battery cannot enter the inside of the limiting rib strips, but the carbon rod part of the positive electrode end of the battery can enter the inside of the limiting rib strips. The height difference between the limiting rib strips and the corresponding battery springs satisfies that the carbon rod part of the positive electrode end of the battery can contact the corresponding battery spring by extending into the limiting rib strips.

[0007] Among them, the underground metal detector includes a handle part. A battery compartment is arranged inside the handle part. A replacement opening is formed at the bottom of the handle part. The replacement opening is communicated with a battery placement rack. A battery cover covers the replacement opening. When the battery cover covers the replacement opening, the inner side wall thereof abuts against the end part of the battery placement rack with an open structure. A battery contact piece is arranged on the inner side wall of the battery cover.

[0008] Among them, a circuit board is further arranged inside the handle part. The end part of each battery spring away from the battery placement rack is connected to the circuit board.

[0009] Among them, a mounting rack is arranged on the top surface of the handle part. A first mounting block is arranged on the mounting rack. A connecting column is arranged on the first mounting block. A second mounting block is rotatably connected to the connecting column. A display screen is arranged on the second mounting block. The display screen is connected to the circuit board.

[0010] Among them, a first through hole is formed in the second mounting block, and a first threaded hole is formed in the connecting column. The second mounting block and the connecting column can be fixedly connected together by locking a first screw locking member into the first through hole and the first threaded hole.

[0011] Among them, a rod body is connected to one end of the handle part. A detection disc is arranged at the end of the rod body away from the handle part. The detection disc is respectively connected to the circuit board and the display screen. A control button is further arranged on the top surface of the handle part. The control button is connected to the circuit board. The control button is used to control the working state of the detection disc.

[0012] Among them, connecting blocks are symmetrically arranged on the side wall of the detection disc close to the rod body. The end of the rod body close to the detection disc extends between the two connecting blocks. Second through holes are formed in both connecting blocks. A second threaded hole is formed in the end of the rod body close to the detection disc. The rod body and the two connecting blocks can be fixedly connected together by inserting a second screw locking member into the second through hole and the second threaded hole and locking a locking nut onto the second screw locking member.

[0013] The utility model has the following beneficial effects:

[0014] The utility model sets limiting rib strips on the battery placement rack. By setting the battery spring to be completely received inside the limiting rib strips, and setting the limiting rib strips such that the negative electrode end of the battery cannot enter the inside of the limiting rib strips. At the same time, the height difference between the limiting rib strips and the corresponding battery spring satisfies that the carbon rod at the positive electrode end of the battery can extend into the limiting rib strips to contact the corresponding battery spring, so that only when the battery is correctly installed, that is, installed upright, the positive electrode end of the battery can be conducted with the battery spring to supply power. When the battery is installed reversely, the negative electrode end of the battery is blocked by the limiting rib strips and cannot contact the battery spring, making it impossible to form a circuit, so as to avoid phenomena such as short circuit, product burnout, and fire caused by reverse installation of the battery. Compared with the prior art, it has the advantage of high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the utility model;

[0016] Figure 2 is a schematic structural diagram of the connection between the battery spring and the circuit board in the utility model;

[0017] Figure 3 is a schematic structural diagram of the connection between the display screen and the handle part in the utility model;

[0018] Figure 4 is a schematic structural diagram of the connection between the detection plate and the rod body in the utility model.

[0019] The reference numerals in the drawings are shown as:

[0020] 1, battery placement rack; 2, limiting rib strip; 3, snap ring; 4, battery spring; 5, handle part; 6, replacement opening; 7, battery cover; 8, circuit board; 9, mounting rack; 10, first mounting block; 11, connecting column; 12, second mounting block; 13, display screen; 14, first through hole; 15, first threaded hole; 16, first screw locking part; 17, rod body; 18, detection plate; 19, control button; 20, connecting block; 21, second through hole; 22, second threaded hole; 23, second screw locking part; 24, locking nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will combine the drawings and specific embodiments to elaborate on the utility model in detail.

[0022] Embodiment: Please refer to Figures 1 to 4, this embodiment provides an underground metal detector, including a battery compartment. The battery compartment includes a battery placement rack 1. In this embodiment, the front end of the battery placement rack 1 is provided with an open structure. The cross-section of the battery placement rack 1 is in a "U" shape for placing the battery. On the side wall of the rear end of the battery placement rack 1, a limiting rib 2 and a retaining ring 3 are provided. The position of the limiting rib 2 corresponds to the positive electrode end of the battery, and the position of the retaining ring 3 corresponds to the negative electrode end of the battery. Inside both the limiting rib 2 and the retaining ring 3, a battery spring 4 is provided. Among them, the battery spring 4 provided inside the limiting rib 2 is completely retracted inside the limiting rib 2, so that the negative electrode end of the battery cannot contact the battery spring 4 at this position when it does not enter the limiting rib 2. The battery spring 4 provided inside the retaining ring 3 extends outward from the retaining ring 3 to facilitate the connection of the negative electrode end of the battery.

[0023] To avoid the short-circuit problem caused by the reverse installation of the battery, the setting of the limiting rib 2 satisfies that the negative electrode end of the battery cannot enter the inside of the limiting rib 2. It can be that the contour of the limiting rib 2 is smaller than the cross-section of the negative electrode end of the battery, so that the negative electrode end of the battery cannot enter the inside of the limiting rib 2. In the prior art, a convex carbon rod part is usually provided at the positive electrode end of the common battery, and the diameter of the convex carbon rod part is smaller than the diameter of the negative electrode end of the battery. To enable the positive electrode end of the battery to contact and conduct with the battery spring 4 inside the limiting rib 2, the setting of the limiting rib 2 also satisfies that the carbon rod part of the positive electrode end of the battery can enter the inside of the limiting rib 2, that is, it can be that the contour of the limiting rib 2 is larger than the cross-section of the carbon rod part of the positive electrode end of the battery, so that the carbon rod part of the positive electrode end of the battery can enter the inside of the limiting rib 2. At the same time, the height difference between the limiting rib 2 and the corresponding battery spring 4 satisfies that the carbon rod part of the positive electrode end of the battery can contact the corresponding battery spring 4 by extending into the limiting rib 2, thereby realizing conduction.

[0024] The underground metal detector further includes a handle part 5. The battery compartment is arranged inside the handle part 5. A replacement opening 6 is opened at the bottom of the handle part 5. The replacement opening 6 is communicated with the battery placement rack 1. A battery cover 7 is covered on the replacement opening 6. The battery cover 7 can be detachably connected to the handle part 5 by the common screw connection method in the prior art to cover the replacement opening 6. When the battery cover 7 is covered on the replacement opening 6, the inner side wall of its rear end can be abutted against the front end of the open structure of the battery placement rack 1 to realize the limitation of the battery in the battery placement rack 1. A battery contact piece is provided on the inner side wall of the rear end of the battery cover 7. When the battery is installed on the battery placement rack 1 and the position of the battery is correct, when the front ends of the two batteries contact the corresponding battery springs 4, the rear ends of the two batteries can also contact the battery contact piece on the battery cover 7 to realize the conduction between the positive and negative electrodes at the corresponding positions of the two batteries.

[0025] With the above settings, when installing the battery, remove the battery cover 7 from the replacement port 6, then place the battery into the battery placement rack 1. When the battery is in the correct position, the positive carbon rod part of the battery at the positive position extends into the limit rib 2 and contacts the battery spring 4 inside the limit rib 2, and the negative end of the battery at the negative position contacts the battery spring 4 inside the snap ring 3. Then, cover the battery cover 7. When the battery is in the wrong position, at this time, the negative end of the battery at the positive position is set facing the limit rib 2, and it cannot contact the battery spring 4 inside the limit rib 2 through the limit rib 2, so that the circuit cannot be conducted at this time. At the same time, when the battery cannot reach the correct installation position, the battery cover 7 cannot be covered either, so as to prompt the user that the installation is incorrect and should be corrected in time.

[0026] A circuit board 8 is also provided inside the handle part 5. The end of each battery spring 4 away from the battery placement rack 1 is connected to the circuit board 8. With the above settings, when the two batteries are in the correct installation positions, a conductive circuit can be formed with the circuit board 8 through contact with the battery springs 4 and the battery contact pieces, so as to supply power to the circuit board 8.

[0027] A display screen 13 is also provided on the top surface of the handle part 5. The display screen 13 is connected to the circuit board 8. A rod body 17 is fixedly connected to the rear end of the handle part 5. A detection plate 18 is provided at the end of the rod body 17 away from the handle part 5. The detection plate 18 is connected to the circuit board 8 and the display screen 13 respectively. A control button 19 is also provided on the top surface of the handle part 5. The control button 19 is connected to the circuit board 8. The control button 19 is used to control the working state of the detection plate 18. With the above settings, the staff holds the handle part 5 by hand, and then uses the control button 19 to control the detection plate 18 to start working, and then the detection work of underground metals can be started. The detection plate 18 can transmit corresponding images to the display screen 13 through the connection with the display screen 13 for the user to read and judge.

[0028] Since the heights of users vary, in order to improve the applicability of the metal detector, in this embodiment, an installation frame 9 is provided on the top surface of the handle portion 5. A first mounting block 10 is provided on the installation frame 9. A connecting column 11 is provided on the first mounting block 10. A second mounting block 12 is rotatably connected to the connecting column 11. The display screen 13 is connected to the second mounting block 12. A first through hole 14 is formed in the second mounting block 12. A first threaded hole 15 is formed in the connecting column 11. The second mounting block 12 and the connecting column 11 can be fixedly connected together by locking a first screw locking member 16 into the first through hole 14 and the first threaded hole 15. Through the above arrangement, the display screen 13 can be set as an adjustable structure. When it is necessary to adjust the angle of the display screen 13 to accommodate users of different heights, by screwing out the first screw locking member 16 so that it is not screwed with the first threaded hole 15, and then rotating the second mounting block 12 to make the second mounting block 12 rotate on the connecting column 11, the display screen 13 can be adjusted to an appropriate angle. After the angle of the display screen 13 is adjusted, screw the first screw locking member 16 back in to make the first screw locking member 16 screw with the first threaded hole 15 and press against the second mounting block 12, thus realizing the fixation of the display screen 13.

[0029] Since the slopes of the applicable sites vary, in order to improve the applicability of the metal detector, in this embodiment, connecting blocks 20 are symmetrically arranged on the side wall of the detection disc 18 close to the rod body 17. The end of the rod body 17 close to the detection disc 18 is arranged to extend between the two connecting blocks 20. Second through holes 21 are formed in both connecting blocks 20. A second threaded hole 22 is formed in the end of the rod body 17 close to the detection disc 18. The rod body 17 and the two connecting blocks 20 can be fixedly connected together by inserting a second screw locking member 23 into the second through hole 21 and the second threaded hole 22 and locking a locking nut 24 onto the second screw locking member 23. Through the above arrangement, the detection disc 18 can be set as an adjustable structure. When it is necessary to adjust the angle of the detection disc 18 to accommodate sites with different slopes, by screwing out the locking nut 24 from the second screw locking member 23, and then, due to the through-hole structure of the second through hole 21, the second screw locking member 23 will not restrict the movement of the two connecting blocks 20. Then, the angle of the detection disc 18 can be adjusted. After the angle of the detection disc 18 is adjusted, by locking the locking nut 24 onto the second screw locking member 23 and making the second locking nut 24 press against the corresponding side connecting block 20, the fixation of the detection disc 18 can be completed.

[0030] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. An underground metal detector, comprising a battery compartment, characterized in that: The battery compartment comprises a battery placement rack (1), wherein one end of the battery placement rack (1) is arranged in an open structure, and a limiting rib (2) and a clamping ring (3) are arranged on the side wall of the other end of the battery placement rack (1), and a battery spring (4) is arranged inside the limiting rib (2) and the clamping ring (3), wherein the battery spring (4) arranged inside the limiting rib (2) is arranged to be completely retracted inside the limiting rib (2), and the setting of the limiting rib (2) satisfies that the negative terminal of the battery cannot enter the inside of the limiting rib (2), but the positive terminal carbon rod part of the battery can enter the inside of the limiting rib (2), and the height difference between the limiting rib (2) and the corresponding battery spring (4) satisfies that the positive terminal carbon rod part of the battery can contact the corresponding battery spring (4) by extending into the limiting rib (2).

2. An underground metal detector according to claim 1, characterized in that: The underground metal detector comprises a handle portion (5), a battery compartment is arranged inside the handle portion (5), a replacement port (6) is provided at the bottom of the handle portion (5), the replacement port (6) is arranged in communication with the battery placement rack (1), the replacement port (6) is covered with a battery cover (7), when the battery cover (7) is covered on the replacement port (6), the inner side wall of the battery cover (7) abuts against the end of the battery placement rack (1) in an open structure, and a battery contact sheet is provided on the inner side wall of the battery cover (7).

3. An underground metal detector according to claim 2, characterized in that: A circuit board (8) is also arranged inside the handle portion (5), and the end of each battery spring (4) away from the battery placement rack (1) is connected to the circuit board (8).

4. An underground metal detector according to claim 3, characterized in that: A mounting frame (9) is arranged on the top surface of the handle portion (5), a first mounting block (10) is arranged on the mounting frame (9), a connecting column (11) is arranged on the first mounting block (10), a second mounting block (12) is rotatably connected to the connecting column (11), a display screen (13) is arranged on the second mounting block (12), and the display screen (13) is connected to the circuit board (8).

5. An underground metal detector according to claim 4, characterized in that: The second mounting block (12) is provided with a first through hole (14), and the connecting column (11) is provided with a first threaded hole (15). The second mounting block (12) and the connecting column (11) can be fixedly connected together by locking a first screw locking member (16) into the first through hole (14) and the first threaded hole (15).

6. An underground metal detector according to claim 3, characterized in that: A rod body (17) is connected to one end of the handle portion (5); a detection disk (18) is arranged on the end of the rod body (17) away from the handle portion (5); the detection disk (18) is connected to the circuit board (8) and the display screen (13) respectively; a control button (19) is also arranged on the top surface of the handle portion (5); the control button (19) is connected to the circuit board (8); and the control button (19) is used to control the working state of the detection disk (18).

7. An underground metal detector according to claim 6, characterized in that: A symmetrically arranged connecting block (20) is provided on the side wall of the detection plate (18) close to the rod body (17); the end of the rod body (17) close to the detection plate (18) is arranged to extend between the connecting blocks (20) on both sides; a second through hole (21) is provided on the connecting blocks (20) on both sides; a second threaded hole (22) is provided on the end of the rod body (17) close to the detection plate (18); the rod body (17) and the connecting blocks (20) on both sides can be fixedly connected together by inserting a second screw locking piece (23) into the second through hole (21) and the second threaded hole (22) and locking a locking nut (24) on the second screw locking piece (23).

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