Metal detection device

Abstract

The utility model provides a metal detector device, and the device comprises a connecting rod, and one end of the connecting rod is provided with a detection main body used for detecting metal; the adapter piece is connected to the other end of the connecting rod, and the adapter piece is provided with a first limiting ring and a second limiting ring which are oppositely arranged; the first end of the handle assembly is clamped in a clamping space formed by the first limiting ring and the second limiting ring, and the second end of the handle assembly is provided with a display screen; the first end is provided with a locking assembly used for being movably matched with a limiting structure composed of the first limiting ring and the second limiting ring. When the adjusting locking assembly is separated from the limiting structure, the handle assembly can rotate around the connecting rod. When the locking assembly is matched with the limiting structure, the handle assembly is locked relative to the connecting rod. The technical problem that the display screen and the connecting rod in the metal detector are fixedly arranged, so that a user can only watch the display screen at a preset angle in the process of holding the connecting rod, and the use experience of the user is reduced is solved.

Description

Technical Field

[0001] This utility model relates to the field of metal detection technology, and more specifically, to a metal detection device. Background Technology

[0002] A metal detector is a metal detection device. In engineering, it can be used to detect underground metal objects, such as pipes and pipelines; in mineral exploration, it can be used to detect and find natural gold particles; in industry, it can be used for online monitoring, such as removing metal impurities from cotton, coal, and food.

[0003] To improve the efficiency of metal detectors, a display screen is often installed in them, allowing users to easily obtain detection information through the screen.

[0004] However, the relevant technology has at least one of the following problems: because the display screen and the connecting rod in the metal detector are fixedly connected, the user can only view the display screen at a preset angle while holding the connecting rod, which reduces the user experience. Utility Model Content

[0005] The technical problem solved by this utility model is that the connection between the display screen and the connecting rod in the metal detector is fixed, which means that the user can only view the display screen at a preset angle when holding the connecting rod, thus reducing the user experience.

[0006] To address the aforementioned problems, this utility model provides a metal detection device, comprising: a connecting rod, one end of which is provided with a detection body for detecting metal; an adapter, connected to the other end of the connecting rod, and the adapter having a first limiting ring and a second limiting ring disposed opposite to each other; a handle assembly, the first end of which is clamped within a locking space formed by the first and second limiting rings, and the second end of which is provided with a display screen; the first end is provided with a locking component for movably engaging with a limiting structure formed by the first and second limiting rings; wherein, when the locking component is adjusted to separate from the limiting structure, the handle assembly can rotate around the connecting rod; when the locking component engages with the limiting structure, the handle assembly is locked relative to the connecting rod.

[0007] Compared to existing technologies, the technical advantages of this solution are as follows: By rotatably connecting the handle assembly and the connecting rod, the display screen mounted on the handle assembly also rotates relative to the connecting rod during the adjustment of the handle assembly's rotation. Compared to a handle assembly fixedly connected to the connecting rod, this increases the versatility of the metal detector for users, adapting to different user habits and effectively avoiding discomfort caused by maintaining a fixed grip posture for extended periods.

[0008] In one embodiment of this utility model, the first end is provided with a mounting cavity for installing a locking assembly; the locking assembly includes a mutually cooperating elastic element and a locking element; the locking element is located between the first limiting ring and the elastic element, and the locking element is provided with a first engaging portion, and the first limiting ring is provided with a second engaging portion; the elastic element is disposed in the mounting cavity and applies an elastic force to the locking element to make it abut against the first limiting ring; wherein, when the adjusting opening surrounded by the first limiting ring applies a squeezing force against the elastic force to the locking element, the first engaging portion and the second engaging portion separate from each other, and the handle assembly can rotate around the connecting rod.

[0009] Compared with existing technologies, the technical effect achieved by this solution is as follows: In practical adjustment scenarios, the user can apply pressure to the surface of the locking component using the adjustment opening. This pressure compresses the elastic element, causing the locking component to move away from the first limiting ring. As the locking component separates from the first limiting ring, the first and second engaging parts also separate, allowing the handle assembly to rotate relative to the connecting rod. After rotation, the user removes the pressure. Under the restoring elastic force of the elastic element, the locking component moves back towards the first limiting ring. If the locking component is now abutting the corresponding surface of the first limiting ring, but the first and second engaging parts are misaligned (not yet locked), the handle assembly can be rotated further. When the first and second engaging parts are directly opposite each other, the restoring elastic force of the elastic element forces them to engage, thus achieving the interlocking effect between the handle assembly and the connecting rod.

[0010] In one embodiment of this utility model, the inner wall of the mounting cavity is provided with a guide protrusion; the outer surface of the locking member is provided with a guide groove that cooperates with the guide protrusion; wherein, during the movement of the locking member relative to the mounting cavity, the guide protrusion and the guide groove maintain cooperation.

[0011] Compared with existing technologies, the technical effect achieved by this technical solution is that the stability of the locking component moving in the relative mounting cavity is ensured by the mutual cooperation between the guide protrusion and the guide groove.

[0012] In one embodiment of this utility model, the axis of rotation of the handle assembly around the connecting rod is defined as the first axis; the first engaging portion includes a plurality of first engaging protrusions spaced apart from each other, the plurality of first engaging protrusions being disposed around the first axis on the circumferential surface of the locking member; the second engaging portion includes at least one first engaging groove for engaging with at least one of the plurality of first engaging protrusions.

[0013] Compared with existing technologies, the technical effect achieved by this solution is as follows: the stability of limiting the rotation of the handle assembly relative to the connecting rod is improved through the engagement of the first engaging groove and the corresponding first engaging protrusion. Furthermore, adjusting the handle assembly to be fixed at different relative angles to the connecting rod can be achieved by having the same engaging groove engage with multiple first engaging protrusions sequentially.

[0014] In one embodiment of this utility model, the mounting cavity is composed of a mounting base and a mounting sleeve; a locking member is disposed at one end of the mounting sleeve; the mounting base and the locking member are disposed opposite each other, and the mounting base is disposed at the other end of the mounting sleeve; wherein, an elastic member is disposed inside the mounting sleeve and is located between the mounting base and the locking member.

[0015] In one embodiment of this utility model, the mounting base is snapped into the mounting sleeve.

[0016] In one embodiment of this utility model, the inner wall of the mounting sleeve is provided with a second engaging protrusion; the mounting base includes: a cover body, which covers the corresponding port of the mounting sleeve away from the locking member; an extension, which is formed at the edge of the cover body, and the end of the extension away from the cover body is provided with a second engaging groove; wherein, when the mounting base is installed on the mounting sleeve, the second engaging protrusion and the second engaging groove engage with each other.

[0017] In one embodiment of this utility model, the connecting rod includes: a first link group, one end of which is provided with a detection body; and a second link group, which is connected to the other end of the first link group by a fastening structure, and the first link group and the second link group are nested and cooperate with each other; wherein, the movement of the second link group relative to the first link group is restricted or released by adjusting the fastening structure.

[0018] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by adjusting the nesting depth between the first and second linkage groups, the overall length of the connecting rod can be changed, thereby adapting to the usage habits of different users and improving the versatility of the metal detection device.

[0019] In one embodiment of this utility model, a first linkage group is sleeved outside a second linkage group, and the end of the first linkage group that mates with the second linkage group has a mating opening; the fastening structure includes: a fastening sleeve, which is disposed at the nested portion of the first and second linkage groups, and an elastic compression piece is provided on the side of the fastening sleeve corresponding to the mating opening; a connecting seat, which is disposed at the position of the fastening sleeve corresponding to the elastic compression piece; and an actuating member, which is rotatably connected to the connecting seat, and a compression protrusion is provided on the side of the actuating member corresponding to the elastic compression piece; wherein, when the adjusting actuating member is in the compression state, the compression protrusion applies pressure to the elastic compression piece against the surface of the mating opening of the second linkage group; when the adjusting actuating member is in the unlocked state, the compression protrusion and the elastic compression piece are misaligned.

[0020] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: Specifically, the fastening structure is simple and the overall length of the connecting rod is easy to adjust.

[0021] In one embodiment of this utility model, a first wire-passing space is provided inside the connecting rod, and a second wire-passing space is provided inside the handle assembly; the detection body and the display screen are electrically connected through an electrical connection wire; the electrical connection wire is provided inside the first wire-passing space and the second wire-passing space.

[0022] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by burying the electrical connection wires in the first and second wiring spaces, compared with the technical solution of exposing the electrical connection wires to the outside of the connecting rod, the appearance of the metal detection device is improved, the electrical connection wires are avoided from being exposed in the use environment and are prone to tangling, and the safety of the metal detection device is improved.

[0023] By adopting the technical solution of this utility model, the following technical effects can be achieved:

[0024] (1) Specifically, by setting the handle assembly and the connecting rod to be rotatably connected, the display screen set on the handle assembly will also rotate relative to the connecting rod during the adjustment of the handle assembly's rotation relative to the connecting rod. Compared with the method of fixing the handle assembly to the connecting rod, this increases the versatility of the metal detection device for users, adapts to the usage habits of different users, and effectively avoids the discomfort caused by users maintaining a fixed grip posture for a long time;

[0025] (2) By adjusting the nesting depth between the first link group and the second link group, the overall length of the connecting rod can be changed, thereby adapting to the usage habits of different users and improving the versatility of the metal detection device.

[0026] (3) By burying the electrical connection wires in the first and second wire passage spaces, compared with the technical solution of exposing the electrical connection wires to the outside of the connecting rod, the appearance of the metal detection device is improved, the electrical connection wires are avoided from being exposed in the use environment and are prone to being pulled, thus improving the safety of the metal detection device. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the structure of a metal detection device provided in an embodiment of this utility model;

[0029] Figure 2 for Figure 1 A schematic diagram showing the fit between the handle assembly and the adapter from another perspective;

[0030] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0031] Figure 4 for Figure 2 An exploded view from another perspective;

[0032] Figure 5 for Figure 4 A schematic diagram of a local structure in the image;

[0033] Figure 6 for Figure 1 A schematic diagram of a local structure from another perspective;

[0034] Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. Metal detection device; 101. First axis; 10. Connecting rod; 11. Detector body; 12. First linkage group; 121. Mating opening; 13. Second linkage group; 20. Adapter; 21. First limiting ring; 211. Second engaging part; 22. Second limiting ring; 23. Limiting structure; 231. Engaging space; 30. Handle assembly; 31. First end; 32. Second end; 33. Display screen; 34. Mounting cavity; 341. Guide protrusion; 3 42. Mounting base; 343. Mounting sleeve; 344. Second engaging protrusion; 345. Cover body; 346. Extension; 347. Second engaging groove; 40. Locking assembly; 42. Locking element; 421. First engaging part; 422. Guide groove; 50. Fastening structure; 51. Fastening sleeve; 52. Elastic compression piece; 53. Connecting seat; 54. Actuating element; 541. Extrusion protrusion; 60. Electrical connection wire; 70. Handrail structure; 71. Ring. Detailed Implementation

[0037] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0038] See Figure 1 This is a structural schematic diagram of a metal detection device 100 provided in an embodiment of this utility model. Combined with... Figures 2-7 The metal detection device 100 includes, for example, a connecting rod 10, an adapter 20, and a handle assembly 30. One end of the connecting rod 10 is provided with a detection body 11 for detecting metal; the adapter 20 is connected to the other end of the connecting rod 10, and the adapter 20 is provided with a first limiting ring 21 and a second limiting ring 22 disposed opposite to each other; the first end 31 of the handle assembly 30 is clamped within a snap-fit ​​space 231 formed by the first limiting ring 21 and the second limiting ring 22, and the second end 32 of the handle assembly 30 is provided with a display screen 33; the first end 31 is provided with a locking assembly 40 for movably engaging with a limiting structure 23 formed by the first limiting ring 21 and the second limiting ring 22; wherein, when the locking assembly 40 is adjusted to separate from the limiting structure 23, the handle assembly 30 can rotate around the connecting rod 10; when the locking assembly 40 engages with the limiting structure 23, the handle assembly 30 is locked relative to the connecting rod 10.

[0039] Specifically, by setting the handle assembly 30 and the connecting rod 10 to be rotatably connected, the rotation of the handle assembly 30 relative to the connecting rod 10 causes the display screen 33 mounted on the handle assembly 30 to also rotate relative to the connecting rod 10. Considering the actual use of the metal detector 100, the user holds the handle assembly 30 to move the detector body 11 to the target position, thus enabling metal detection at the target location. By adjusting the relative angles of the handle assembly 30 and the connecting rod 10, the user can change the detection angle of the detector body 11 relative to the target position while maintaining the same holding posture, thereby improving the user's efficiency in using the metal detector 100. Conversely, the user can also change their holding posture by adjusting the angle of the handle assembly 30 relative to the connecting rod 10. Therefore, while maintaining a constant detection angle of the detector body 11 relative to the target position, the user's discomfort caused by maintaining a fixed holding posture for extended periods is effectively avoided.

[0040] In a specific example, the adapter 20 can be a plastic structure. During the installation of the first end 31 onto the limiting structure 23, the first end 31 can be pressed into the limiting space between the first limiting ring 21 and the second limiting ring 22. The handle assembly 30 can be switched between a locked and unlocked state relative to the connecting rod 10 by adjusting the locking assembly 40. Specifically, when the handle assembly 30 is in the locked state relative to the connecting rod 10, the locking assembly 40 and the limiting structure 23 cooperate to restrict the rotation of the handle assembly 30 relative to the connecting rod 10; when the handle assembly 30 is in the unlocked state relative to the connecting rod 10, the locking assembly 40 and the limiting structure 23 separate, and the handle assembly 30 can then be adjusted to rotate relative to the connecting rod 10.

[0041] Preferably, the first end 31 is provided with a mounting cavity 34 for mounting the locking assembly 40; the locking assembly 40 includes a cooperating elastic member and a locking member 42; the locking member 42 is located between the first limiting ring 21 and the elastic member, and the locking member 42 is provided with a first engaging portion 421, and the first limiting ring 21 is provided with a second engaging portion 211; the elastic member is disposed in the mounting cavity 34, and applies an elastic force to the locking member 42 to make it abut against the first limiting ring 21; wherein, when the adjustment opening surrounded by the first limiting ring 21 applies a squeezing force against the elastic force to the locking member 42, the first engaging portion 421 and the second engaging portion 211 separate from each other, and the handle assembly 30 can rotate around the connecting rod 10.

[0042] In practical adjustment scenarios, users can use the adjustment opening to apply pressure to the surface of the locking member 42, so that the elastic member is compressed, thereby driving the locking member 42 away from the first limiting ring 21. Thus, in the process of separating the locking member 42 from the first limiting ring 21, the first engaging part 421 and the second engaging part 211 are driven to separate from each other, and then the adjustment handle assembly 30 can be rotated relative to the connecting rod 10. After completing the rotation adjustment, the user removes the pressure. Under the action of the elastic force of the elastic element, the locking member 42 is driven to move towards the first limiting ring 21. If the locking member 42 has abutted against the corresponding surface of the first limiting ring 21, but the first engaging part 421 and the second engaging part 211 are misaligned, that is, they have not formed a mutually locked state, the handle assembly 30 can continue to be rotated. When the first engaging part 421 and the second engaging part 211 are aligned with each other, the elastic force of the elastic element can force the first engaging part 421 and the second engaging part 211 to engage with each other, thereby completing the interlocking effect between the handle assembly 30 and the connecting rod 10.

[0043] Preferably, the inner wall of the mounting cavity 34 is provided with a guide protrusion 341; the outer surface of the locking member 42 is provided with a guide groove 422 that mates with the guide protrusion 341; wherein, during the movement of the locking member 42 relative to the mounting cavity 34, the guide protrusion 341 and the guide groove 422 remain engaged. Through the mutual engagement of the guide protrusion 341 and the guide groove 422, the stability of the locking member 42 in its movement relative to the mounting cavity 34 is ensured.

[0044] Preferably, the axis of rotation of the handle assembly 30 around the connecting rod 10 is defined as the first axis 101; the first engaging portion 421 includes a plurality of first engaging protrusions spaced apart from each other, the plurality of first engaging protrusions being disposed on the circumferential surface of the locking member 42 around the first axis 101; the second engaging portion 211 includes at least one first engaging groove for engaging with at least one of the plurality of first engaging protrusions.

[0045] Preferably, the mounting cavity 34 comprises a mounting base 342 and a mounting sleeve 343; a locking member 42 is disposed at one end of the mounting sleeve 343; the mounting base 342 is disposed opposite to the locking member 42, and the mounting base 342 is disposed at the other end of the mounting sleeve 343; wherein, an elastic member is disposed within the mounting sleeve 343, located between the mounting base 342 and the locking member 42. The stability of limiting the rotation of the handle assembly 30 relative to the connecting rod 10 is improved by the engagement of the first engaging groove and the corresponding first engaging protrusion. When adjusting the handle assembly 30 to be fixed at different relative angles to the connecting rod 10, this can be achieved by having the same engaging groove engage with multiple first engaging protrusions sequentially.

[0046] Preferably, the mounting base 342 is engaged with the mounting sleeve 343.

[0047] Preferably, the inner wall of the mounting sleeve 343 is provided with a second engaging protrusion 344; the mounting base 342 includes, for example, a capping body 345 and an extension 346; the capping body 345 covers the corresponding port of the mounting sleeve 343 away from the locking member 42; the extension 346 is formed at the edge of the capping body 345, and a second engaging groove 347 is provided at one end of the extension 346 away from the capping body 345; wherein, when the mounting base 342 is installed onto the mounting sleeve 343, the second engaging protrusion 344 and the second engaging groove 347 engage with each other.

[0048] Preferably, the connecting rod 10 includes, for example, a first connecting rod group 12 and a second connecting rod group 10; one end of the first connecting rod group 12 is provided with a detection body 11; the second connecting rod group 13 is connected to the other end of the first connecting rod group 12 through a fastening structure 50, and the first connecting rod group 12 and the second connecting rod group 13 are nested together; wherein, the movement of the second connecting rod group 13 relative to the first connecting rod group 12 can be restricted or released by adjusting the fastening structure 50. By adjusting the nesting depth between the first connecting rod group 12 and the second connecting rod group 13, the overall length of the connecting rod 10 can be changed, thereby adapting to the usage habits of different users and improving the versatility of the metal detection device 100.

[0049] Preferably, the first link assembly 12 is sleeved outside the second link assembly 13, and the end of the first link assembly 12 that is used to cooperate with the second link assembly 13 has a cooperation opening 121; the fastening structure 50 includes, for example, a fastening sleeve 51, a connecting seat 53 and a toggle member 54. A fastening sleeve 51 is disposed at the nested portion of the first connecting rod assembly 12 and the second connecting rod assembly 13, and an elastic compression piece 52 is provided on the side of the fastening sleeve 51 corresponding to the mating opening 121; a connecting seat 53 is disposed at the position of the fastening sleeve 51 corresponding to the elastic compression piece 52; an actuating member 54 is rotatably connected to the connecting seat 53, and an extrusion protrusion 541 is provided on the side of the actuating member 54 corresponding to the elastic compression piece 52; wherein, when the adjusting actuating member 54 is in the extrusion state, the extrusion protrusion 541 applies pressure to the elastic compression piece 52 to abut against the surface of the second connecting rod assembly 13 corresponding to the mating opening 121; when the adjusting actuating member 54 is in the unlocked state, the extrusion protrusion 541 and the elastic compression piece 52 are misaligned.

[0050] Preferably, the connecting rod 10 has a first wire-passing space, and the handle assembly 30 has a second wire-passing space; the detection body 11 and the display screen 33 are electrically connected via an electrical connection wire 60; the electrical connection wire 60 is disposed within the first and second wire-passing spaces. By embedding the electrical connection wire 60 within the first and second wire-passing spaces, compared to the technical solution of exposing the electrical connection wire 60 to the outside of the connecting rod 10, the appearance of the metal detection device 100 is improved, the electrical connection wire 60 is avoided from being exposed in the use environment and is prone to tangling, and the safety of the metal detection device 100 is improved.

[0051] In a specific example, the adapter 20 also has a mounting slot for mounting the handrail structure 70. Specifically, the handrail structure 70 is nested within the mounting slot, and the mounting slot and the handrail structure 70 are also fixedly connected by a fastening structure 50, which will not be elaborated here. When using the metal detector 100, the user puts their arm through the loop 71 of the handrail structure 70 and then grips the handle structure with their hand. Thus, the cooperation between the handrail structure 70 and the handle structure reduces the weight borne by the user's hand when lifting the metal detector 100, achieving a certain weight-sharing effect from the arm and ensuring stable use of the metal detector 100 by the user.

[0052] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A metal detection device, characterized in that, include: A connecting rod (10), one end of which is provided with a detection body (11) for detecting metal; The adapter (20) is connected to the other end of the connecting rod (10), and the adapter (20) is provided with a first limiting ring (21) and a second limiting ring (22) arranged opposite to each other; A handle assembly (30) is provided with a first end (31) clamped in a snap-fit ​​space (231) formed by the first limiting ring (21) and the second limiting ring (22), and a display screen (33) is provided on the second end (32) of the handle assembly (30). The first end (31) is provided with a locking component (40) for movably engaging with a limiting structure (23) composed of the first limiting ring (21) and the second limiting ring (22); When the locking assembly (40) is separated from the limiting structure (23), the handle assembly (30) can rotate around the connecting rod (10); when the locking assembly (40) is engaged with the limiting structure (23), the handle assembly (30) is locked relative to the connecting rod (10).

2. The metal detection device according to claim 1, characterized in that, The first end (31) is provided with a mounting cavity (34) for mounting the locking assembly (40); The locking assembly (40) includes a mutually cooperating elastic element and a locking element (42); The locking member (42) is located between the first limiting ring (21) and the elastic member, and the locking member (42) is provided with a first engaging part (421), and the first limiting ring (21) is provided with a second engaging part (211); The elastic element is disposed in the mounting cavity (34) and applies an elastic force to the locking element (42) to make it abut against the first limiting ring (21); When the adjustment opening surrounded by the first limiting ring (21) applies a squeezing force against the elastic force to the locking member (42), the first engaging part (421) and the second engaging part (211) separate from each other, and the handle assembly (30) can rotate around the connecting rod (10).

3. The metal detection device according to claim 2, characterized in that, The inner wall of the mounting cavity (34) is provided with a guide protrusion (341); The outer surface of the locking member (42) is provided with a guide groove (422) that cooperates with the guide protrusion (341); During the movement of the locking member (42) relative to the mounting cavity (34), the guide protrusion (341) and the guide groove (422) maintain a cooperative relationship.

4. The metal detection device according to claim 2, characterized in that, The axis of rotation of the handle assembly (30) around the connecting rod (10) is defined as the first axis (101); The first engaging portion (421) includes a plurality of first engaging protrusions spaced apart from each other, and the plurality of first engaging protrusions are disposed around the first axis (101) on the circumferential surface of the locking member (42); The second engaging portion (211) includes at least one first engaging groove for engaging with at least one of the plurality of first engaging protrusions.

5. The metal detection device according to claim 2, characterized in that, The mounting cavity (34) consists of a mounting base (342) and a mounting sleeve (343); The locking member (42) is disposed at one end of the mounting sleeve (343); the mounting base (342) is disposed opposite to the locking member (42), and the mounting base (342) is disposed at the other end of the mounting sleeve (343); The elastic element is housed within the mounting sleeve (343) and is located between the mounting base (342) and the locking element (42).

6. The metal detection device according to claim 5, characterized in that, The mounting base (342) is engaged with the mounting sleeve (343).

7. The metal detection device according to claim 6, characterized in that, The inner wall of the mounting sleeve (343) is provided with a second engaging protrusion (344); The mounting base (342) includes: A cover body (345) that covers the corresponding port of the mounting sleeve (343) away from the locking member (42); An extension (346) is formed at the edge of the cap body (345), and a second engaging groove (347) is provided at the end of the extension (346) away from the cap body (345); When the mounting base (342) is installed onto the mounting sleeve (343), the second engaging protrusion (344) and the second engaging groove (347) engage with each other.

8. The metal detection device according to any one of claims 1-7, characterized in that, The connecting rod (10) includes: The first link assembly (12) has the detection body (11) provided at one end; The second link group (13) is connected to the other end of the first link group (12) by a fastening structure (50), and the first link group (12) and the second link group (13) are nested together. The second link assembly (13) is restricted or released from the first link assembly (12) by adjusting the fastening structure (50).

9. The metal detection device according to claim 8, characterized in that, The first link assembly (12) is sleeved on the outside of the second link assembly (13), and the first link assembly (12) has a mating opening (121) at one end for mating with the second link assembly (13); The fastening structure (50) includes: A fastening sleeve (51) is provided at the location where the first connecting rod group (12) and the second connecting rod group (13) are nested together, and the fastening sleeve (51) is provided with an elastic compression piece (52) on the side corresponding to the mating opening (121). A connecting seat (53) is provided at the position of the fastening sleeve (51) corresponding to the elastic compression piece (52); A toggle member (54) is rotatably connected to the connecting seat (53), and the toggle member (54) has a pressing protrusion (541) on one side corresponding to the elastic pressing sheet (52). When the toggle (54) is in the squeezed state, the squeeze protrusion (541) applies pressure to the elastic squeeze piece (52) to abut against the surface of the second link assembly (13) corresponding to the mating opening (121); when the toggle (54) is in the unlocked state, the squeeze protrusion (541) and the elastic squeeze piece (52) are misaligned.

10. The metal detection device according to any one of claims 1-7, characterized in that, The connecting rod (10) has a first wire-passing space, and the handle assembly (30) has a second wire-passing space; The detection body (11) and the display screen (33) are electrically connected via an electrical connection cable (60); The electrical connection line (60) is disposed within the first wire passage space and the second wire passage space.

Images