Detachable probe head structure of metal detector

By employing a boltless fixing and hydraulic system-assisted detachment design in the metal detector, the problems of easy damage and inconvenient replacement of the detection disc are solved, enabling rapid replacement and efficient operation of the detection head.

CN224366207UActive Publication Date: 2026-06-16SHANGHAI TIANXUN ELECTRONICS EQUIP

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI TIANXUN ELECTRONICS EQUIP
Filing Date
2025-08-22
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

The detection discs of existing metal detectors are easily scratched, worn, or damaged by moisture from sharp objects, and replacement is inconvenient, especially since the bolt fixing leads to low efficiency when frequent replacements are required.

Method used

The device employs a boltless fixing design between the rod and the detection head. It utilizes a combination of a first conical block, a second conical block, and a spring to facilitate the easy disassembly of the detection head via the sliding rod. The hydraulic system further assists in detachment, simplifying the replacement process.

🎯Benefits of technology

It enables quick disassembly and replacement of the detection head, reduces downtime, improves operational efficiency, and reduces the need for manual operation.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224366207U_ABST
    Figure CN224366207U_ABST
Patent Text Reader

Abstract

The utility model relates to metal detector technical field, concretely relates to a detachable detection head structure of metal detector, including the pole body, the pole body bottom assembly has the installation mechanism, the pole body bottom assembly has the detection head, the installation mechanism includes the connecting plate, the connecting plate fixed connection is in the detection head top, the connecting plate side fixedly connected with first taper block, the pole body front hinged has the vertical board, the vertical board side fixedly connected with the sleeve, the sleeve inner wall side fixedly connected with the spring, the utility model discloses through sliding pole body and utilize the combination of first taper block and second taper block and spring, realized a mechanism that can be conveniently disassembled detection head without bolt fixed, through simplifying the disassembly process, improved the efficiency of detection disc replacement, reduced the downtime, under normal working condition, second taper block is clamped in the bottom of first taper block, prevents the accidental drop of detection head.
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Description

Technical Field

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

[0002] In the field of metal detection, metal detectors are commonly used tools. Metal detectors are mainly classified by application into: security metal detectors, treasure detectors, and mine detectors. Modern metal detectors are all designed with protection to prevent damage during use; some are even waterproof to meet users' needs for protection of the circuitry in rainy environments or during underwater detection. However, most metal detectors have their circuit components built into a control box, connected to the detection plate via external cables and rods.

[0003] Patent document CN220983523U discloses a metal detector, including a detection disc, a detection rod rotatably connected to the detection disc, a protective cylinder detachably connected inside the detection rod, and circuit components disposed within the protective cylinder. The circuit components include a main circuit board extending along the length of the protective cylinder and a secondary circuit board perpendicular to the main circuit board, with the secondary circuit board near the opening of the protective cylinder. A detection disc socket is disposed on the side of the secondary circuit board facing the interior of the detection rod. The detection disc includes a coil, a waterproof cable connected to the coil, and a detection disc plug disposed at the end of the waterproof cable. The waterproof cable and the detection disc plug extend into the detection rod, allowing the detection disc plug to be inserted into the detection disc socket. By embedding the circuit components within the detection rod and achieving individual disassembly and replacement of the detection disc through the connection of the detection disc plug and socket, the waterproof design requirements of the metal detector are met. The overall structure is simple, lightweight, and compact.

[0004] Although the aforementioned application documents achieve the purpose of disassembling and replacing the detector disc independently through the connection method of the detector disc plug and detector disc socket, and meet the waterproof design requirements of metal detectors, and the overall structure is simple, lightweight and compact, in current technology the detector disc is in contact with the ground for a long time, and the coil is easily scratched, worn or damaged by sharp objects or moisture, requiring frequent replacement. Because bolts are used for fixing, replacement is not convenient.

[0005] Therefore, a detachable detector head structure for a metal detector is proposed to solve the problems mentioned above. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a detachable detector head structure for a metal detector, solving the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution: it includes a rod body, an installation mechanism is mounted on the bottom of the rod body, and a detection head is mounted on the bottom of the rod body;

[0008] The installation mechanism includes a connecting plate, which is fixedly connected to the top of the detection head. A first conical block is fixedly connected to the side of the connecting plate. A vertical plate is hinged to the front of the rod. A sleeve is fixedly connected to the side of the vertical plate. A spring is fixedly connected to the inner wall of the sleeve. A second conical block is fixedly connected to the side of the spring. A connecting rod is fixedly connected to the front of the second conical block. A push block is fixedly connected to the front of the connecting rod. A limit assembly is fixedly connected to the bottom of the rod.

[0009] Preferably, the limiting component includes a first limiting plate, which is fixedly connected to the top of the detection head, and a second limiting plate is fixedly connected to the top of the detection head.

[0010] Preferably, the front of the rod body has a groove for sliding the connecting rod, and the front of the push block has an anti-slip groove for improving the anti-slip effect.

[0011] Preferably, the two ends of the spring are fixedly connected to the side of the inner wall of the sleeve and the side of the second conical block, respectively.

[0012] Preferably, the bottom of the rod is equipped with a replacement mechanism for easy replacement of the detection head.

[0013] Preferably, the replacement mechanism includes a slider, which is slidably connected to the inner wall of the push block. A pressing rod is fixedly connected to the front of the slider, and a hydraulic chamber is fixedly connected to the front of the vertical plate. The hydraulic chamber is filled with high-viscosity hydraulic oil.

[0014] Preferably, a first hydraulic rod is slidably connected to a piston at one end inside the hydraulic chamber, and a second hydraulic rod is slidably connected to a piston at the other end inside the hydraulic chamber.

[0015] Compared with the prior art, this utility model provides a detachable detector head structure for a metal detector, which has the following advantages:

[0016] 1. By using a sliding rod and a combination of a first conical block, a second conical block, and a spring, a mechanism is achieved that allows for easy disassembly of the detection head without the need for bolts. This simplifies the disassembly process, improves the efficiency of changing the detection disc, and reduces downtime. Under normal operating conditions, the second conical block is held in place at the bottom of the first conical block, preventing the detection head from accidentally falling off.

[0017] Second, by pushing the slider and a series of rods to move, the mechanism for disengaging the auxiliary detection head from the rod is realized. By the action of the squeezing rod and the first and second hydraulic rods, the flow of hydraulic oil is precisely controlled, thus achieving precise control of the hydraulic system. Through the automated disengagement mechanism, the efficiency of operation is improved and the need for manual operation is reduced. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a front view of part of the structure of this utility model. Figure 1 ;

[0020] Figure 3 This is a front view of part of the structure of this utility model. Figure 2 ;

[0021] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Rod body; 2. Installation mechanism; 21. First limiting plate; 22. Second limiting plate; 23. Connecting plate; 24. First conical block; 25. Sleeve; 26. Second conical block; 27. Connecting rod; 28. Push block; 29. ​​Anti-slip groove; 210. Slide groove; 3. Replacement mechanism; 31. Slider; 32. Extrusion rod; 33. Hydraulic chamber; 34. First hydraulic rod; 35. Second hydraulic rod; 4. Detection head. Detailed Implementation

[0023] 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. Example

[0024] See Figures 1-4 This embodiment provides a detachable detector head structure for a metal detector, including a rod 1, a mounting mechanism 2 mounted at the bottom of the rod 1, and a detection head 4 mounted at the bottom of the rod 1.

[0025] The mounting mechanism 2 includes a connecting plate 23, which is fixedly connected to the top of the detection head 4. A first conical block 24 is fixedly connected to the side of the connecting plate 23. A vertical plate is hinged to the front of the rod body 1. A sleeve 25 is fixedly connected to the side of the vertical plate. A spring is fixedly connected to the inner wall of the sleeve 25. A second conical block 26 is fixedly connected to the side of the spring. A connecting rod 27 is fixedly connected to the front of the second conical block 26. A push block 28 is fixedly connected to the front of the connecting rod 27. A limit assembly is fixedly connected to the bottom of the rod body 1.

[0026] The limiting component includes a first limiting plate 21, which is fixedly connected to the top of the detection head 4, and a second limiting plate 22 is fixedly connected to the top of the detection head 4.

[0027] The front of the rod body 1 has a groove 210 for sliding the connecting rod 27, and the front of the push block 28 has an anti-slip groove 29 for improving the anti-slip effect.

[0028] The two ends of the spring are fixedly connected to the inner wall side of the sleeve 25 and the side of the second conical block 26, respectively.

[0029] In practical use, the above-mentioned device slides the rod 1 along the inner wall of the first limiting plate 21 and the second limiting plate 22. When the vertical plate slides to the bottom of the detection head 4, the second conical block 26 slides on the inclined surface of the first conical block 24. The second conical block 26 is squeezed, and the spring on the side of the second conical block 26 is compressed. When the second conical block 26 has completely passed the surface of the first conical block 24, the spring drives the second conical block 26 to pop out and get stuck at the bottom of the first conical block 24. When disassembly is required, push the push block 28 to move to the left. The push block 28 drives the connecting rod 27 to move to the left. The connecting rod 27 drives the second conical block 26 to move to the left. The first conical block 24 no longer limits the second conical block 26. Lifting the rod 1 can separate the rod 1 from the detection head 4. Example

[0030] See Figures 1-4 Based on Embodiment 1, the bottom of the rod 1 is equipped with a replacement mechanism 3 for easy replacement of the detection head 4.

[0031] The replacement mechanism 3 includes a slider 31, which is slidably connected to the inner wall of the push block 28. A pressing rod 32 is fixedly connected to the front of the slider 31, and a hydraulic chamber 33 is fixedly connected to the front of the vertical plate. The hydraulic chamber 33 is filled with high-viscosity hydraulic oil.

[0032] A first hydraulic rod 34 is slidably connected to a piston at one end inside the hydraulic chamber 33, and a second hydraulic rod 35 is slidably connected to a piston at the other end inside the hydraulic chamber 33.

[0033] When the above-mentioned device is used, the slider 31 is pushed to move to the left, the slider 31 drives the push block 28 to move to the left, the slider 31 drives the extrusion rod 32 to move to the left, the extrusion rod 32 drives the first hydraulic rod 34 to move to the left, the first hydraulic rod 34 drives the piston to extrude hydraulic oil to flow to the bottom of the hydraulic chamber 33, and drives the second hydraulic rod 35 to move to the bottom, so that the auxiliary detection head 4 is disengaged from the rod body 1.

[0034] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0035] 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 detachable detector head structure for a metal detector, characterized in that: Includes a rod body (1), the bottom of which is equipped with an installation mechanism (2) and a detection head (4). The installation mechanism (2) includes a connecting plate (23), which is fixedly connected to the top of the detection head (4). A first conical block (24) is fixedly connected to the side of the connecting plate (23). A vertical plate is hinged to the front of the rod (1). A sleeve (25) is fixedly connected to the side of the vertical plate. A spring is fixedly connected to the inner wall of the sleeve (25). A second conical block (26) is fixedly connected to the side of the spring. A connecting rod (27) is fixedly connected to the front of the second conical block (26). A push block (28) is fixedly connected to the front of the connecting rod (27). A limit assembly is fixedly connected to the bottom of the rod (1).

2. The detachable detector head structure of a metal detector according to claim 1, characterized in that: The limiting component includes a first limiting plate (21), which is fixedly connected to the top of the detection head (4), and a second limiting plate (22) is fixedly connected to the top of the detection head (4).

3. The detachable detector head structure of a metal detector according to claim 2, characterized in that: The rod body (1) has a groove (210) on its front side for sliding the connecting rod (27), and the push block (28) has an anti-slip groove (29) on its front side for improving the anti-slip effect.

4. The detachable detector head structure of a metal detector according to claim 3, characterized in that: The two ends of the spring are respectively fixedly connected to the inner wall side of the sleeve (25) and the side of the second conical block (26).

5. The detachable detector head structure of a metal detector according to claim 1, characterized in that: The bottom of the rod (1) is equipped with a replacement mechanism (3) for easy replacement of the detection head (4).

6. The detachable detector head structure of a metal detector according to claim 5, characterized in that: The replacement mechanism (3) includes a slider (31), which is slidably connected to the inner wall of the push block (28). A pressing rod (32) is fixedly connected to the front of the slider (31), and a hydraulic chamber (33) is fixedly connected to the front of the vertical plate. The hydraulic chamber (33) is filled with high-viscosity hydraulic oil.

7. The detachable detector head structure of a metal detector according to claim 6, characterized in that: The first hydraulic rod (34) is slidably connected to the piston at one end inside the hydraulic chamber (33), and the second hydraulic rod (35) is slidably connected to the piston at one end inside the hydraulic chamber (33).