CN118769190A - A device with an extension rod - Google Patents

Abstract

The present application proposes a device with an extension rod. The device includes a device body and an extension rod assembly; the extension rod assembly includes an extension rod and a locking member, and the locking member is threadedly connected to the extension rod; a first connection portion is fixedly provided on the first end of the device body, and a second connection portion is provided on the extension rod, and the first connection portion and the second connection portion are threadedly connected. The locking member is provided with a through hole, and the first connection portion or the second connection portion can pass through the through hole. In a state where the extension rod and the device body are connected and fixed by the second connection portion and the first connection portion, the locking member can move a preset stroke toward the device body along the axial direction of the extension rod to press against the device body. When the fit between the first connection portion and the second connection portion has a tendency to loosen and rotate, the locking member prevents the connection between the first connection portion and the second connection portion from further loosening, locks the connection portion between the device body and the extension rod, and prevents the fit between the device body and the extension rod from loosening.

Description

A device with an extension rod

Technical Field

The present application relates to a device having an extension pole.

Background Art

A nonlinear node detector is an electronic device that can quickly identify semiconductor components, metal oxides or corrosive substances that contain nonlinear junctions. Currently, nonlinear node detectors are provided with a handle, and users can perform detection by holding the handle tightly. However, the length of the handle of these nonlinear node detectors cannot be adjusted, which brings a lot of inconvenience to users when using them.

Summary of the invention

The inventors found that although the nonlinear node detector can be connected to an extension rod to extend the length of the handle of the nonlinear node detector, the connection and locking effect between the extension rod and the nonlinear node detector is not good, which can easily cause the extension rod and the nonlinear node detector to loosen during use, affecting user use. The inventors also found that similar to the aforementioned nonlinear node detector, many devices such as metal detectors, SLR cameras, and selfie sticks all have the same or similar technical problems as the aforementioned nonlinear node detector.

In view of the above problems, it is necessary to propose a device with an extension rod to solve or partially solve the above problems. The technical solution proposed in this application is as follows:

The present application provides a device with an extension rod, including a device body and an extension rod assembly;

The extension rod assembly comprises an extension rod and a locking piece, wherein the locking piece is threadedly connected to the extension rod;

A first connecting portion is fixedly provided at the first end of the device body, a second connecting portion is provided on the extension rod, and the first connecting portion and the second connecting portion are detachably connected;

The locking member is provided with a through hole, and the first connecting portion or the second connecting portion can pass through the through hole;

When the extension rod and the device body are fixed by connecting the second connecting part and the first connecting part, the device body has a preset distance between the first end of the first connecting part and the locking member, and the locking member can move the preset stroke toward the device body along the axial direction of the extension rod to press against the end face of the first end of the device body; wherein the preset stroke is greater than or equal to the preset distance.

In one or some optional embodiments, the first connection portion and the second connection portion are threadedly connected or snap-connected.

In one or some optional embodiments, the device body is an electronic device or a mechanical device.

In one or some optional embodiments, when the extension rod and the device body are fixed by connecting the second connecting part and the first connecting part, the device body has a preset distance between the first end of the first connecting part and the locking member, and the locking member can move the preset stroke toward the device body along the axial direction of the extension rod to press against the end face of the first end of the device body; wherein the preset stroke is greater than or equal to the preset distance.

In one or some optional embodiments, the extension rod comprises a first end and a second end that are arranged opposite to each other, and the second connecting portion is arranged on the first end of the extension rod;

The locking member is sleeved on the first end of the extension rod and is threadedly connected to the first end of the extension rod;

One of the second connecting portion and the first connecting portion can pass through the through hole on the locking member to be connected and fixed to the other of the two.

In one or some optional embodiments, the locking member includes a top surface, the top surface is an end surface facing the first end of the device body, and the through hole passes through the top surface;

The device further comprises a spacer, wherein the spacer comprises a spacer portion at least located between an end surface of the first end of the device body and a top surface of the locking member to form the preset distance.

In one or some optional embodiments, the spacer is a first boss, the first boss is arranged on the end face of the first end of the extension rod, and the second connecting part is arranged on the first boss, wherein the second connecting part can pass through the through hole and be detachably connected to the first connecting part, the first boss can pass through the through hole and protrude from the top surface of the locking member, and the part of the first boss protruding from the top surface of the locking member is located between the end face of the first end of the device body and the top surface of the locking member.

In one or some optional embodiments, the first connection portion is a threaded hole provided at the first end of the device body, and the second connection portion is a stud provided on the first boss;

Alternatively, the first connection portion is a stud disposed at the first end of the device body, and the second connection portion is a threaded hole disposed in the first boss.

In one or some optional embodiments, the locking member further comprises an anti-loosening pad and a locking body, wherein the anti-loosening pad is provided with a first through hole, the locking body is provided with a second through hole, the through hole of the locking member comprises the first through hole and the second through hole intersecting each other, and the locking body is threadedly connected to the extension rod;

The anti-loosening pad is arranged on the locking body and faces the end surface of the first end of the device body;

When the extension rod and the device body are connected and fixed via the second connection portion and the first connection portion, the anti-loosening pad is not higher than the first boss.

In one or some optional embodiments, the spacer is a second boss, the second boss is arranged on the end face of the first end of the device body, and the first connecting part is arranged on the second boss, wherein the first connecting part can pass through the through hole to be detachably connected with the second connecting part, the second boss can pass through the through hole and contact the end face of the first end of the extension rod, and the part of the second boss that does not pass through the through hole is located between the end face of the first end of the device body and the top surface of the locking member.

In one or some optional embodiments, the first connection portion is a threaded hole provided in the second boss, and the second connection portion is a stud provided at the first end of the extension rod;

Alternatively, the first connection portion is a stud disposed on the second boss, and the second connection portion is a threaded hole disposed at the first end of the extension rod.

In one or some optional embodiments, the locking member further comprises an anti-loosening pad and a locking body, wherein the anti-loosening pad is provided with a first through hole, the locking body is provided with a second through hole, the through hole of the locking member comprises the first through hole and the second through hole intersecting each other, and the locking body is threadedly connected to the extension rod;

The anti-loosening pad is arranged on the locking body and faces the end surface of the first end of the device body;

When the extension rod and the device body are fixed by connecting the second connection part and the first connection part, the anti-loosening pad is located between the end surface of the first end of the device body and the top surface of the locking member.

In one or some optional embodiments, the locking body has a groove, the anti-loosening pad is arranged in the groove, and the groove surrounds the periphery of the second through hole.

In one or some optional embodiments, the locking body includes an abutment portion and a side wall having an internal thread, the abutment portion and the side wall form a cylindrical structure, and the second through hole and the groove are formed on the abutment portion.

In one or some optional embodiments, the anti-loosening pad is a deformable gasket; the side wall of the second through hole protrudes from the bottom surface of the groove, and the inner wall of the anti-loosening pad surrounds the side wall of the second through hole.

In one or some optional embodiments, the locking member also includes a locking body, a second through hole is provided on the locking body, the through hole of the locking member includes the second through hole, the locking body is threadedly connected to the extension rod, the spacer is an anti-loosening pad, and the anti-loosening pad is arranged between the equipment body and the locking body, and when the extension rod and the equipment body are connected and fixed via the second connecting part and the first connecting part, the equipment body has a first end of the first connecting part and a preset distance from the anti-loosening pad, and the locking member can move the preset stroke toward the equipment body along the axial direction of the extension rod so as to press against the end face of the first end of the equipment body through the anti-loosening pad; wherein, the preset distance is greater than or equal to zero.

In one or some optional embodiments, the locking member also includes the anti-loosening pad, the anti-loosening pad has a first through hole, the through hole of the locking member includes the first through hole and the second through hole that are interconnected, the locking body has a groove, the anti-loosening pad is arranged in the groove, the groove surrounds the periphery of the second through hole, and the thickness of the anti-loosening pad is greater than the height of the side wall of the second through hole.

In one or some optional embodiments, the outer wall of the extension rod is provided with a locking external thread, and the locking body is threadedly connected to the extension rod.

In one or some optional embodiments, a protrusion structure is provided on the outer surface of the side wall of the locking body.

In one or some optional embodiments, the first connecting portion is a threaded hole, and the thread rotation direction of the first connecting portion is the same as or opposite to the thread rotation direction of the internal thread of the side wall of the locking body; or

The second connection portion is a threaded hole, and the thread rotation direction of the second connection portion is the same as or opposite to the thread rotation direction of the internal thread of the side wall of the locking body.

In one or some optional embodiments, a surface of the anti-loosening pad on one side facing away from the bottom surface of the groove is provided with a plurality of protrusions.

In one or some optional embodiments, the second end of the extension rod is provided with a third connection portion, and the third connection portion is suitable for being threadedly connected to the second connection portion of another extension rod; or

The second end of the extension rod is also provided with the second connection portion, which is suitable for being threadedly connected to another extension rod.

In one or some optional embodiments, an elastic layer is provided on a surface of one side of the first end of the device body facing the first end of the extension rod.

In one or some optional embodiments, the device body is a detector.

In one or some optional embodiments, the detector is a non-linear node detector or a metal detector.

In one or some optional embodiments, the detector includes a probe and a handle, the probe is connected to one end of the handle, and the other end of the handle is provided with the first connecting part for detachably connecting to the second connecting part of the extension rod assembly.

Based on the above technical solution, the beneficial effects of this application compared with the prior art are as follows:

The device with an extension rod provided by the embodiment of the present application is provided with a locking member in the extension rod assembly. When assembling, the locking member is firstly screwed with the extension rod, and then the device body and the extension rod assembly are connected through the first connecting part and the second connecting part to achieve fixation. After the device body and the extension rod assembly are fixedly connected, the locking member of the extension rod assembly is screwed in the opposite direction to move the locking member toward the device body along the axial direction of the extension rod until the locking member moves a preset stroke to achieve abutment with the device body, thereby generating pressure on the device body. When the connection between the first connecting part and the second connecting part has a tendency to loosen and rotate, due to the abutment of the locking member with the device body, a friction force in the opposite direction of the loosening of the connection can be generated, thereby hindering the further loosening of the connection between the first connecting part and the second connecting part, thereby achieving the locking of the assembly connection between the device body and the extension rod assembly, preventing the loosening of the cooperation between the device body and the extension rod assembly, and being conducive to strengthening the stability of the assembly connection between the device body and the extension rod assembly, and improving the user experience.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a structural schematic diagram 1 of a device with an extension rod provided in an embodiment of the present application;

FIG2 is a second structural schematic diagram of a device with an extension rod provided in an embodiment of the present application;

FIG3 is an exploded view of a nonlinear node detector with an extended rod provided in an embodiment of the present application;

FIG4 is an exploded view of a nonlinear node detector with an extension rod provided in an embodiment of the present application from another angle;

FIG5 is a second exploded view of a nonlinear node detector with an extended rod provided in an embodiment of the present application;

FIG6 is a schematic structural diagram of a locking body of a locking member in an embodiment of the present application;

7 is a schematic structural diagram of a tightened state of a locking member of a nonlinear node detector with an extension rod provided in an embodiment of the present application;

FIG8 is a schematic cross-sectional view of the nonlinear node detector with an extended rod shown in FIG7 in the A-A direction;

FIG9 is a schematic diagram of a partially enlarged structure of part A of the nonlinear node detector with an extended rod shown in FIG8 ;

10 is a schematic structural diagram of a nonlinear node detector with an extension rod provided in an embodiment of the present application in an untightened state of a locking member;

FIG11 is a schematic cross-sectional view of the nonlinear node detector with an extended rod shown in FIG10 in the A-A direction;

FIG12 is a schematic diagram of a partially enlarged structure of part B of the nonlinear node detector with an extended rod shown in FIG11;

FIG13 is a second structural schematic diagram of a nonlinear node detector with an extension rod provided in an embodiment of the present application;

FIG14 is a schematic structural diagram of the nonlinear node detector with an extended rod shown in FIG13 at another angle;

in:

1. Equipment;

10. Device body; 100. Connecting rod; 100A. First end of the connecting rod; 100B. Second end of the connecting rod; 101. First connecting portion; 101'. First connecting portion; 104. Probe;

20. Extension rod assembly; 200. Locking member; 201. Locking body; 2011. Abutment portion; 2012. Side wall with internal thread; 202. Top surface of locking member; 203. Through hole; 204. Anti-loosening pad; 205. Groove; 206. Extension rod; 206A. First end of extension rod; 206B. Second end of extension rod; 207. Second connecting portion; 207'. Second connecting portion; 208. Locking external thread; 209. Third connecting portion; First through hole, 2031; Second through hole, 2032;

30. Spacer; 301. First boss; 302. Second boss.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

1 and 2 , the embodiment of the present application provides a device 1 with an extension rod, including a device body 10 and an extension rod assembly 20;

The extension rod assembly 20 includes an extension rod 206 and a locking member 200, wherein the locking member 200 is threadedly connected to the extension rod 206;

The device body 10 is provided with a first connection portion 101, and the extension rod 206 is provided with a second connection portion 207, and the first connection portion 101 and the second connection portion 207 are detachably connected;

The locking member 200 is provided with a through hole 203, and the first connecting portion 101 or the second connecting portion 207 can pass through the through hole 203;

When the extension rod 206 and the device body 10 are connected and fixed via the second connection portion 207 and the first connection portion 101 , the locking member 200 can move a preset stroke along the axial direction of the extension rod 206 toward the device body 10 to press against the device body 10 .

The device body 10 is, for example but not limited to, various suitable types of electronic equipment, mechanical equipment, etc. By adding the extension rod assembly 20 detachably connected to the device body 10 , the user experience of the device body 10 is improved.

In the embodiment of the present application, when the device body 10 is an electronic device, the device body 10 may be, for example but not limited to, a camera, a radio device, or a detector, etc. The first connecting portion 101 is provided on the electronic device.

When the device body 10 is a mechanical device, the device body 10 may be, for example but not limited to, a device having a rod-shaped structure such as a pan/tilt, a connecting rod, a bracket, or the like. Alternatively, the device body 10 may also be other suitable types of mechanical devices, and is not limited to the aforementioned rod-shaped device. The mechanical device is provided with the first connecting portion 101.

It can be understood that when the device body 10 is a connecting rod, a bracket or other device with a rod-shaped structure, the device body 10 may include a connecting rod 100, and the connecting rod 100 is provided with the first connecting portion 101. For example, but not limited to, the device body 10 is a selfie stick, and the selfie stick may include a clamping mechanism (not shown in the figure) and a connecting rod 100, and the connecting rod 100 is provided with the first connecting portion 101. The clamping mechanism can clamp a mobile phone, a camera or other electronic device with a shooting function. The specific implementation of the clamping mechanism can refer to the records in the relevant prior art. Of course, the above-mentioned device body 10 can also be a device recorded in other related technologies. The device body 10 is provided with the first connecting portion 101, which can be detachably connected to the second connecting portion 206.

In the embodiment of the present application, the first connection part 101 and the second connection part 207 can be detachably connected by a threaded connection or a snap connection. Of course, in some other possible embodiments, the first connection part 101 and the second connection part 206 can also be detachably connected by an implementation method recorded in the relevant technology, which will not be repeated here.

When the device 1 is used, the center of gravity of the device body 10 is transferred to the connection with the extension rod assembly 20. The locking force generated by the end face of the first end 100A of the device body 10 abutted by the locking member 200 is converted into an axial force of equal magnitude and opposite direction, thereby reducing or eliminating the axial force of the device body 10 generated by the center of gravity torque of the device body 10, so that the device 1 can ignore the rotational looseness of the device body 10 caused by the insufficient axial locking force of the extension rod 206 caused by the center of gravity torque of the device body 10. At the same time, when the cooperation between the device body 10 and the extension rod assembly 20 has a tendency to rotate loose, the locking member 200 can also be used to prevent the further loosening of the connection between the device body 10 and the extension rod 206.

In order to more clearly explain the device 1 with an extension rod provided in the embodiment of the present application, the device body 10 in the device 1 is taken as a detector, especially a nonlinear node detector, as an example, and is described in detail as follows:

Example 1

As shown in Fig. 3 to Fig. 12, the nonlinear node detector 1 with an extension rod comprises a connecting rod 100 and a probe 104. One end of the connecting rod 100 is connected to the probe 104, and the other end is provided with the first connecting portion 101, which is used to be detachably connected to the second connecting portion 207 of the extension rod 206 of the extension rod assembly 20. The probe 104 is used to detect a target object, and the target object is, for example but not limited to, various products with metal junctions, semiconductor junctions, etc. The connecting rod 100 can also be called a handle for the user to hold.

In one embodiment, as shown in FIGS. 3 to 12 , the locking member 200 of the extension rod assembly 20 of the device 1 is disposed between the connecting rod 100 and the extension rod 206 , and the locking member 200 is threadedly connected to the extension rod 206 ;

The first end 100A of the connecting rod 100 is provided with a first connecting portion 101 (see FIG. 4 ), the extension rod 206 includes a first end 206A and a second end 206B that are oppositely disposed, the first end 206A of the extension rod 206 is provided with a second connecting portion 207, and the first connecting portion 101 and the second connecting portion 207 are threadedly connected;

The locking member 200 is provided with a through hole 203 (see FIG. 3 ), and the first connecting portion 101 or the second connecting portion 207 can pass through the through hole 203;

When the extension rod 206 and the device body 10 (i.e., the nonlinear node detector) are fixed by being connected to the first connecting part 101 via the second connecting part 207, the locking member 200 can move a preset stroke along the axial direction of the extension rod 206 toward the device body 10 to tighten the first end 100A of the connecting rod 100 of the device body 10.

In an optional embodiment, when the extension rod 206 and the nonlinear node detector are connected and fixed with the first connecting portion 101 via the second connecting portion 207, there is a preset distance between the first end 100A of the connecting rod 100 and the locking member 200, and the locking member 200 can move the preset stroke along the axial direction of the extension rod 206 toward the nonlinear node detector to press against the end surface of the first end 100A of the connecting rod 100; wherein the preset stroke is greater than or equal to the preset distance.

The assembly and locking process of the connecting rod 100 of the nonlinear node detector and the extension rod 206 of the extension rod assembly 20 can be shown in reference to Figures 6-12. The connecting rod 100 of the nonlinear node detector and the extension rod 206 of the extension rod assembly 20 can be assembled through a threaded connection and locked by a locking piece 200.

Referring to FIGS. 3-6 , before the nonlinear node detector is assembled with the extension rod assembly 20, the locking member 200 can be firstly screwed and fixed to the first end 206A of the extension rod 206, and then, referring to FIGS. 10-12 , the connecting rod 100 and the extension rod 206 are screwed and assembled through the threaded fit between the first connecting portion 101 and the second connecting portion 207. At this time, when the extension rod 206 and the nonlinear node detector are connected and fixed with the first connecting portion 101 through the second connecting portion 207, there is a preset distance between the first end 100A of the connecting rod 100 and the locking member 200, as shown in FIG. 12 , that is, the end surface (not shown) of the first end 100A of the connecting rod 100 is at a preset distance from the top surface 202 of the locking member 200, and the preset distance can be reduced by moving the locking member 200 along the axial direction of the extension rod 206 toward the nonlinear node detector. Therefore, the locking member 200 can be screwed outward from the extension rod 206, so that the locking member 200 moves along the axial direction of the extension rod 206, reducing the distance between the end surface of the first end 100A of the connecting rod 100 and the top surface 202 of the locking member 200, until the top surface 202 of the locking member 200 is tightly against the end surface of the first end 100A of the connecting rod 100, as shown in Figure 9. Figures 7 to 9 are the effect diagrams after the locking member 200 is locked. At this time, the locking member 200 is tightly against the end surface of the first end 100A of the connecting rod 100, thereby achieving the locking of the assembly part between the connecting rod 100 and the extension rod 206.

In the embodiment of the present application, referring to Figures 3, 6 and 12, the top surface 202 of the locking member 200 is the end surface facing the first end of the device body 10, and the through hole 203 passes through the top surface 202; when the device body 10 is a nonlinear node detector, the first end of the device body 10 is the first end 100A of the connecting rod 100 of the nonlinear node detector.

In the embodiment of the present application, the locking member 200 is sleeved on the first end 206A of the extension rod 206 and is threadedly connected to the first end 206A of the extension rod 206;

One of the second connection portion 207 and the first connection portion 101 can pass through the through hole 203 on the locking member 200 to be connected and fixed to the other one of the two.

In a specific embodiment, as shown in Fig. 3 to Fig. 12, the first connection part 101 is a threaded hole provided at the first end 100A of the connection rod 100, the extension rod 206 includes a first end 206A and a second end 206B provided opposite to each other, and the second connection part 207 is a stud provided at the first end 206A of the extension rod 206, and the stud can be threadedly matched with the threaded hole. Optionally, as shown in Fig. 4, a blind hole is provided at the middle position of the first end 100A of the connection rod 100, and an internal thread is provided in the blind hole to form a threaded hole as the first connection part 101, and correspondingly, as shown in Fig. 3 and Fig. 4, a stud is provided at the middle position of the first end 206A of the extension rod 206 as the second connection part 207.

3 , the locking member 200 has a through hole 203 , and the second connecting portion 207 of the extension rod 206 passes through the through hole 203 , so that the first connecting portion 101 and the second connecting portion 207 can be threadedly connected.

In one example, for example but not limited to, the device 1 further includes a spacer 30, and the spacer 30 includes a spacer portion at least located between the end surface of the first end of the device body 10 and the top surface 202 of the locking member 200, so as to form the preset distance between the end surface of the first end of the device body 10 and the locking member 200. In the case where the device body 10 is a nonlinear node detector, the end surface of the first end of the device body 10 is the end surface of the first end 100A of the connecting rod 100 of the nonlinear node detector.

In an optional embodiment, the spacer 30 may be a first boss 301. Referring to FIGS. 3 and 12 at the same time, the first boss 301 is disposed on the end surface of the first end 206A (see FIG. 3) of the extension rod 206, and the second connection portion 207 is disposed on the first boss 301, wherein the second connection portion 207 can pass through the through hole 203 and be detachably connected to the first connection portion 101, the first boss 301 can pass through the through hole 203 and protrude from the top surface 202 of the locking member 200, and the portion of the first boss 301 protruding from the top surface 202 of the locking member 200 is located between the end surface of the first end 100A of the connecting rod 100 and the top surface 202 of the locking member 200.

In the embodiment of the present application, the inner diameter of the through hole 203 is larger than the outer diameter of the first boss 301, so that when the locking member 200 is threadedly connected and tightened with the extension rod 206, the first boss 301 can protrude from the through hole 203. By providing a boss structure on the end surface of the first end 206A of the extension rod 206 facing the first end 100A of the connecting rod 100, the second connecting portion 207, i.e., the stud, is provided on the first boss 301. When the extension rod 206 and the nonlinear node detector are connected with the first connecting portion 101 via the second connecting portion 207, the first boss 301 can pass through the through hole 203, so that the first connecting portion 101 and the second connecting portion 207 can be fully tightened and matched. Since the first boss 301 can protrude from the through hole 203 and protrude from the locking member, After the top surface 202, the connecting rod 100 and the extension rod 206 are tightened, the upper end surface of the first boss 301 can abut against the end surface of the first end 100A of the connecting rod 100, so that the portion of the first boss 301 protruding from the top surface 202 of the locking member 200 is located between the end surface of the first end of the device body 10 and the top surface 202 of the locking member 200, which can ensure that there is a preset distance between the first end 100A of the connecting rod 100 and the top surface 202 of the locking member 200, so that the preset stroke can be left for the axial movement of the locking member 200 along the extension rod 206. By screwing the locking member 200 outward, when the locking member 200 moves axially toward the device body 10 to reach the preset stroke, the top surface 202 of the locking member 200 abuts against the end surface of the first end 100A of the connecting rod 100.

In the embodiment of the present application, if the first end 100A of the connecting rod 100 and the locking member 200 are both made of non-elastic materials, the preset stroke of the locking member 200 along the axial direction of the extension rod 206 may be equal to the preset distance. If the lower end surface of the first end 100A of the connecting rod 100 has an elastic material or the upper end surface of the locking member 200 has an elastic material, since the elastic material will deform when subjected to force, the movement stroke of the locking member 200 along the axial direction of the extension rod 206 will be greater than the preset distance, that is, the preset stroke is greater than the preset distance.

In a specific embodiment, as shown in FIGS. 3 to 6 , the locking member 200 further includes an anti-loosening pad 204 and a locking body 201 (as shown in FIG. 5 ), wherein the anti-loosening pad 204 is provided with a first through hole 2031, the locking body 201 is provided with a second through hole 2032, the through hole 203 of the locking member 200 includes the first through hole 2031 and the second through hole 2032 intersecting each other, and the locking body 201 is threadedly connected to the extension rod 206;

The anti-loosening pad 204 is disposed on the locking body 201 and faces the end surface of the first end 100A of the device body 10;

When the extension rod 100 and the connecting rod 100 are connected and fixed via the second connecting portion 207 and the first connecting portion 101 , part of the first boss 301 protrudes out of the first through hole 2031 , and the anti-loosening pad 204 is not higher than the first boss 301 .

In a specific embodiment, as shown in FIGS. 3 to 12 , the anti-loosening pad 204 may be, for example, a gasket capable of deformation;

The locking body 201 has a groove 205, and the anti-loosening pad 204 is arranged in the groove 205; the groove 205 surrounds the periphery of the second through hole 2032;

When the extension rod 100 and the connecting rod 100 of the nonlinear node detector are fixed by being connected to the first connecting part 101 via the second connecting part 207, there is a preset distance between the end face of the first end 100A of the connecting rod 100 and the anti-loosening pad 204. At this time, the locking member 200 can move the preset stroke along the axial direction of the extension rod 206 to press against the first end 100A of the connecting rod 100 through the anti-loosening pad 204.

In the embodiment of the present application, the preset distance may be greater than or equal to zero, wherein when the end surface of the first end 100A of the connecting rod 100 is in contact with the anti-loosening pad 204 , the preset distance is equal to zero.

In the embodiment of the present application, as shown in FIGS. 3 to 6 , the locking body 201 includes an abutting portion 2011 and a side wall 2012 having an internal thread, the abutting portion 2011 and the side wall 2012 form a cylindrical structure, and the abutting portion 2011 is formed with the second through hole 2032 and the groove 205. The outer wall of the extension rod 206 is provided with a locking external thread 208, and the locking member 200 is connected with the locking external thread 208 of the first end 206A of the extension rod 206 through the internal thread provided on the side wall 2012.

In the embodiment of the present application, as shown in FIGS. 3 to 6 , the side wall of the second through hole 2032 protrudes from the bottom surface of the groove 205, and the inner wall of the anti-loosening pad 204 surrounds the side wall of the second through hole 2032. The position of the anti-loosening pad 204 is limited by the side wall of the second through hole 2032, and when the locking member 200 moves along the axial direction of the extension rod 206 and contacts the first end 100A of the connecting rod 100 to generate friction, the anti-loosening pad 204 will not be displaced in the groove 205 due to the friction, causing the anti-loosening pad 204 to deviate from the predetermined position area.

However, alternatively, in certain other embodiments, the groove 205 may be omitted, as long as the anti-loosening pad 204 is arranged between the first end 100A of the connecting rod 100 and the locking body 201 , for example but not limited to, the anti-loosening pad 204 is arranged on the top surface of the locking body 201 .

In the embodiment of the present application, referring to FIGS. 3 to 6 , the groove 205 is formed on the abutting portion 2011 of the locking body 201, and the anti-loosening pad 204 is arranged in the groove 205. The groove 205 surrounds the periphery of the second through hole 2032. Optionally, the thickness of the anti-loosening pad 204 is greater than the height of the side wall of the second through hole 2032. Thus, when the locking member 200 moves axially along the extension rod 206 and contacts the end face of the first end 100A of the connecting rod 100, the anti-loosening pad 204 is squeezed and deformed to increase the friction between the anti-loosening pad 204 and the first end 100A of the connecting rod 100 until the anti-loosening pad 204 and the connecting rod 100 are in contact. The end face of the first end 100A of the connecting rod 100 is pressed tightly, and the deformation degree of the anti-loosening pad 204 no longer changes. Due to the deformation of the anti-loosening pad 204, the friction between the anti-loosening pad 204 and the first end 100A of the connecting rod 100 is greater. When the threaded fit between the first connecting part 101 and the second connecting part 207 tends to loosen and rotate, it can better hinder the further loosening and rotation of the threaded connection between the first connecting part 101 and the second connecting part 207, thereby improving the locking effect of the assembly connection between the connecting rod 100 and the extension rod 206, and further enhancing the stability of the assembly connection between the connecting rod 100 and the extension rod 206.

When the device 1 is used, the center of gravity of the device body 10 is transferred to the connection with the extension rod assembly 20. The locking force generated by the locking member 200 abutting against the end face of the first end 100A of the device body 10 converts the center of gravity torque of the device body 10 into an axial force of equal magnitude and opposite direction. The locking force generated by the locking member 200 abutting against the end face of the first end 100A of the device body 10 and the friction force generated by the surface of the anti-loosening pad 204 on the end face of the first end 100A can overcome the axial force of the device body 10 generated by the center of gravity torque, so that the device 1 can ignore the rotational looseness of the device body 10 caused by the insufficient axial locking force of the extension rod 206 due to the center of gravity torque of the device body 10. At the same time, when the cooperation between the device body 10 and the extension rod assembly 20 has a tendency to rotate loose, the locking member 200 can also be used to prevent the further loosening of the connection between the device body 10 and the extension rod 206.

In the embodiment of the present application, in order to increase the friction coefficient between the anti-loosening pad 204 and the first end 100A of the connecting rod 100, a plurality of protrusions (not shown) may be further provided on the surface of the anti-loosening pad 204 on the side opposite to the bottom surface of the groove 205. In one example, the plurality of protrusions of the anti-loosening pad 204 may be point-shaped protrusions, that is, the surface of the anti-loosening pad 204 is provided with a plurality of protrusions, and the plurality of protrusions stop against the end surface of the first end 100A of the connecting rod 100, so that the friction force formed when the anti-loosening pad 204 stops against the first end 100A of the connecting rod 100 can be greater, further improving the locking effect.

In the embodiment of the present application, the anti-loosening pad 204 can be, for example but not limited to, a gasket made of rubber, silicone or plastic materials. Of course, according to the above description, those skilled in the art can also choose to use other deformable materials to make the anti-loosening pad 204, as long as it can meet the effect of increasing the friction with the first end 100A of the connecting rod 100. In this regard, the embodiment of the present application may not make specific limitations.

In the embodiment of the present application, in order to further increase the friction coefficient between the first end 100A of the connecting rod 100 and the locking member 200, an elastic layer (not shown in the figure) may be provided on the side surface of the first end 100A of the device body 10 facing the first end 206A of the extension rod 206, that is, the end surface of the first end 100A of the connecting rod 100, that is, the side surface of the first end 100A of the connecting rod 100 facing the first end 206A of the extension rod 206 is provided with an elastic layer. When the extension rod 100 and the connecting rod 100 of the nonlinear node detector are connected and fixed by the second connecting portion 207 and the first connecting portion 101, the anti-loosening pad 204 may abut against the elastic layer of the end surface of the first end 100A of the connecting rod 100. For example, an elastic layer may be bonded around the threaded hole of the first connecting portion 101 of the first end 100A of the connecting rod 100 to further improve the locking effect between the connecting rod 100 and the locking member 200. The elastic layer may be made of plastic material. Of course, according to the above description, those skilled in the art may also choose to use other elastic materials to make the elastic layer, such as rubber or silicone material, and this embodiment of the present application may not be specifically limited to this.

In the embodiment of the present application, in order to facilitate the user to manually tighten the locking member 200 so that the locking member 200 is threadedly connected to the second end 206B of the extension rod 206, a protrusion structure (not shown) can also be provided on the outer surface of the locking body 201. By providing the protrusion structure, when the user tightens the locking member 200, the friction coefficient of the locking member 200 is larger, which can prevent the locking member 200 from slipping during the tightening process. Optionally, in an example, as shown in FIG. 5 , the multiple protrusions on the surface of the locking body 201 are mesh line protrusions. Of course, in the embodiment of the present application, the protrusion structure on the surface of the locking body 201 can also adopt other suitable structural forms, which will not be repeated here.

In the embodiment of the present application, the internal thread of the first connecting portion 101 and the internal thread of the side wall 2012 of the locking body 201 may have the same thread rotation direction. When the connecting rod 100 and the locking member 200 are in a state of being pressed against each other, if the connecting rod 100 shows a tendency to loosen and rotate, the first end 100A of the connecting rod 100 generates friction force on the anti-loosening pad 204 of the locking member 200, which causes the locking member 200 to rotate in the same direction as the connecting rod 100. When the locking member 200 rotates in the same direction as the connecting rod 100, since the internal thread of the first connecting portion 101 and the internal thread of the side wall 2012 of the locking body 201 have the same thread rotation direction, the movement direction of the connecting rod 100 and the locking member 200 in the axial direction of the connecting rod 100 is consistent, so that the connecting rod 100 and the locking member 200 can still maintain a pressed state, thereby preventing the first connecting portion 101 and the second connecting portion 207 from loosening.

In the embodiment of the present application, the internal thread of the first connection part 101 and the internal thread of the side wall 2012 of the locking body 201 have the same thread rotation direction, which means that the internal thread of the first connection part 101 and the internal thread of the side wall 2012 of the locking body 201 are both left-handed threads, or the internal thread of the first connection part 101 and the internal thread of the side wall 2012 of the locking body 201 are both right-handed threads.

In some other optional embodiments, the internal thread of the first connecting portion 101 and the internal thread of the side wall 2012 of the locking body 201 may also be in opposite directions of rotation. After the connecting rod 100 and the extension rod 206 are assembled by the threaded fit between the first connecting portion 101 and the second connecting portion 207, the locking member 200 is rotated in the opposite direction to make the end face of the anti-loosening pad 204 press against the first end 100A of the connecting rod 100. The friction force of the end face of the anti-loosening pad 204 of the locking member 200 against the upper end face of the first end 100A of the connecting rod 100 will drive the connecting rod 100 to rotate in the same direction. Since the internal thread of the first connecting portion 101 and the internal thread of the side wall 2012 of the locking body 201 have different thread rotation directions, when the connecting rod 100 and the locking member 200 rotate in the same direction, the connecting rod 100 and the locking member 200 will move toward each other in the axial direction of the connecting rod 100, so that the connecting rod 100 and the locking member 200 are further pressed against each other, thereby strengthening the locking effect of the connecting rod 100. In addition, since the thread directions of the internal thread of the first connecting portion 101 and the internal thread of the side wall 2012 of the locking body 201 can also be opposite, after the connecting rod 100 and the extension rod 206 are assembled through the threaded cooperation between the first connecting portion 101 and the second connecting portion 207, the operator can screw the locking member 200 with one hand to make the locking member 200 move along the axial direction of the extension rod 206 until the upper end surface of the locking member 200 presses against the lower end surface of the first end 100A of the connecting rod 100.

In the embodiment of the present application, the thread rotation direction of the internal thread of the first connecting part 101 and the internal thread of the side wall 2012 of the locking body 201 are opposite, which means that the internal thread of the first connecting part 101 is a left-handed thread, and the internal thread of the side wall 2012 of the locking body 201 is a right-handed thread, or, the internal thread of the first connecting part 101 is a right-handed thread, and the internal thread of the side wall 2012 of the locking body 201 is a left-handed thread.

In the embodiment of the present application, the second end 206B of the extension rod 206 may also be provided with a third connection portion 209, and the third connection portion 209 is suitable for being threadedly connected with the second connection portion 207 of another extension rod 206. For example, but not limited to, the third connection portion 209 may be a threaded hole provided at the second end 206B of the extension rod 206. Optionally, a blind hole is provided at the middle position of the second end 206B of the extension rod 206, and an internal thread is provided in the blind hole to form a threaded hole as the third connection portion 209. By providing the third connection portion 209 at the second end 206B of the extension rod 206, after the extension rod 206 and the connecting rod 100 are tightened, the second end 206B of the extension rod 206 may be connected to another extension rod 206, and the other extension rod 206 only needs to be provided with a stud with the same or similar structure as the second connection portion 207.

In addition, in some other optional embodiments, the second end 206B of the extension rod 206 may also be provided with a second connection portion 207, which is suitable for being threadedly connected with another extension rod 206. Specifically, a stud may be provided at the middle position of the second end 206B of the extension rod 206, as the second connection portion 207 of the extension rod 206. By providing the second connection portion 207 at the second end 206B of the extension rod 206, after the extension rod 206 and the connecting rod 100 are tightened, the second end 206B of the extension rod 206 may be further connected to another extension rod 206, and the other extension rod 206 only needs to be provided with an internal thread having the same or similar structure as the first connection portion 101 described above.

Of course, in the embodiment of the present application, the connection structure of the second end 206B of the extension rod 206 is not limited to the implementation structure described in the above embodiment, and may also be other suitable implementation structures. For example, but not limited to, the second end 206B of the extension rod 206 is provided with at least one pivot or pivot hole, so that it can be pivotally connected with other components to be connected.

In an embodiment of the present application, the above-mentioned detector may also be a metal detector, for example, which may include a connecting rod 100 and a probe (not shown in the figure), and the metal detector and the extension rod assembly 20 constitute a device 1 with an extension rod assembly, wherein the implementation process of assembling the metal detector and the extension rod assembly 20 may refer to the above-mentioned implementation process of assembling the nonlinear node detector and the extension rod assembly 20, which will not be repeated here.

However, in some other embodiments, the first connecting portion 101 may be replaced by a stud instead of a threaded hole, and the stud is arranged on the end surface of the first end 100A; the second connecting portion 207 may be replaced by a threaded hole instead of a stud, and the threaded hole is arranged on the first boss 301, and the threaded hole may extend to the extension rod 206. The stud is threadedly connected and fixed to the threaded hole. The portion of the first boss 301 that passes through the through hole 203 and protrudes from the top surface 202 of the locking member 200 is located between the top surface of the locking member 200 and the end surface of the first end 100A of the device body 10, so as to ensure that there is a preset distance between the first end 100A of the connecting rod 100 and the top surface 202 of the locking member 200, so that the preset stroke can be left for the axial movement of the locking member 200 along the extension rod 206.

Example 2

As shown in FIG. 13 and FIG. 14 , in the device 1 with an extension rod provided in Example 2 of the present application, the device body 10 is also described by taking a nonlinear node detector as an example, and the difference from the above-mentioned Example 1 is that: first, a second boss 302 is provided on the end surface of the first end 100A of the device body 10, and a first connecting portion 101' is provided on the second boss 302, and the first connecting portion 101' is a stud; second, a second connecting portion 207' is provided on the first end 206A of the extension rod 206 in the extension rod assembly 20, and the second connecting portion 207' is a threaded hole, and the extension rod 206 is not provided with the first boss 301. The stud can be threadedly matched with the threaded hole.

Specifically, the extension rod 206 includes a first end 206A and a second end 206B that are arranged opposite to each other. Optionally, as shown in FIG14 , a stud is provided at the middle position of the first end 100A of the connecting rod 100 as the first connecting portion 101 ', and correspondingly, as shown in FIG13 , a blind hole is provided at the middle position of the first end 206A of the extension rod 206, and an internal thread is provided in the blind hole to form a threaded hole as the second connecting portion 207 '. The locking member 200 has a through hole 203, and the first connecting portion 101 ' of the connecting rod 100 passes through the through hole 203, so that the first connecting portion 101 ' and the second connecting portion 207 ' can be threadedly connected.

In one example, for example but not limited to, as shown in Figures 6 and 12, the locking member 200 includes a top surface 202, the top surface 202 is the end surface facing the first end of the device body 10, and the through hole 203 passes through the top surface 202; when the device body 10 is a nonlinear node detector, the first end of the device body 10 is the first end 100A of the connecting rod 100 of the nonlinear node detector.

In an optional embodiment, the device further comprises a spacer 30, the spacer 30 comprising a spacer portion at least located between the end surface of the first end of the device body 10 and the top surface 202 of the locking member, so as to form the preset distance between the end surface of the first end of the device body 10 and the locking member 200. In the case that the device 10 is a nonlinear node detector, the end surface of the first end of the device 10 is the end surface of the first end 100A of the connecting rod 100 of the nonlinear node detector.

In an optional embodiment, as shown in FIGS. 13-14 , the spacer 30 may be a second boss 302, which is disposed on the end surface of the first end 100A of the device body 10. The first connection portion 101′ is disposed on the second boss 302, wherein the first connection portion 101′ can pass through the through hole 203 to be detachably connected to the second connection portion 207′, the second boss 302 can pass through the through hole 203 and contact the end surface of the first end 206A of the extension rod 206, and the portion of the second boss 302 that does not pass through the through hole 203 is located between the end surface of the first end of the device body 10 and the top surface 202 of the locking member 200.

Specifically, as shown in FIG. 13 and FIG. 14 , the first connection portion 101 ′ is a stud disposed on the second boss 302 , and the second connection portion 207 ′ is a threaded hole disposed at the first end 206A of the extension rod 206 .

In one embodiment, as shown in FIG. 14 , the inner diameter of the through hole 203 is greater than the outer diameter of the second boss 302, and the second boss 302 can protrude from the through hole 203. By providing a boss structure on one side of the end surface of the first end 100A of the connecting rod 100 facing the first end 206A of the extension rod 206, the first connecting portion 101', i.e., the stud, is provided on the second boss 302. During the connection and assembly process between the connecting rod 100 and the extension rod 206, the second boss 302 can pass through the through hole 203 from top to bottom, so that the first connecting portion 101' and the second connecting portion 207' can be fully screwed together, and the second boss 302 can protrude from the through hole 203. When the extension rod 206 and the nonlinear node detector are connected through the first connecting portion 101', the second boss 302 can protrude from the through hole 203. When the second connection part 207' is connected and fixed to the first connection part 101', the lower end surface of the second boss 302 can abut against the end surface of the first end 206A of the extension rod 206, and the portion of the second boss 302 that does not pass through the through hole 203 is located between the end surface of the first end of the device body 10 and the top surface 202 of the locking member 200, thereby ensuring that there is a preset distance between the first end 100A of the connecting rod 100 and the locking member 200, so that the preset stroke can be left for the axial movement of the locking member 200 along the extension rod 206. By screwing the locking member 200 outward, when the locking member 200 moves axially toward the nonlinear node detector to reach the preset stroke, the top surface 202 of the locking member 200 abuts against the first end 100A of the connecting rod 100.

In the embodiment of the present application, if the first end 100A of the connecting rod 100 and the locking member 200 are both made of non-elastic materials, the preset stroke of the locking member 200 along the axial direction of the extension rod 206 may be equal to the preset distance. If the lower end surface of the first end 100A of the connecting rod 100 has an elastic material or the upper end surface of the locking member 200 has an elastic material, since the elastic material will deform when subjected to force, the movement stroke of the locking member 200 along the axial direction of the extension rod 206 will be greater than the preset distance, that is, the preset stroke is greater than the preset distance.

In a specific embodiment, as shown in FIG. 13 , the locking member 200 further includes an anti-loosening pad 204 and a locking body 201, wherein the anti-loosening pad 204 is provided with a first through hole 2031, the locking body 201 is provided with a second through hole 2032, the through hole 203 of the locking member 200 includes the first through hole 2031 and the second through hole 2032 intersecting each other, and the locking body 201 is threadedly connected to the extension rod 206;

The anti-loosening pad 204 is disposed on the locking body 201 and faces the end surface of the first end 100A of the device body 10;

When the extension rod 100 and the connecting rod 100 of the nonlinear node detector are fixed by connecting the second connecting part 207' to the first connecting part 101', part of the second boss 302 is located below the second through hole 2032 and part of it is located above the first through hole 2031, and the anti-loosening pad 204 is located between the end face of the first end 100A of the equipment body 10 and the locking body 201.

In a specific embodiment, as shown in FIG. 13 and FIG. 14 , the anti-loosening pad 204 may be, for example, a gasket capable of deformation;

The locking body 201 has a groove 205, and the anti-loosening pad 204 is arranged in the groove 205; the groove 205 surrounds the periphery of the second through hole 2032;

When the extension rod 100 and the connecting rod 100 of the nonlinear node detector are fixed by connecting the second connecting portion 207' to the first connecting portion 101', there is a preset distance between the first end 100A of the connecting rod 100 and the anti-loosening pad 204. At this time, the locking member 200 can move the preset stroke along the axial direction of the extension rod 206 toward the device body 10 to tighten the first end 100A of the connecting rod 100 through the anti-loosening pad 204.

In the embodiment of the present application, the preset distance may be greater than or equal to zero, wherein when the end surface of the first end 100A of the connecting rod 100 is in contact with the anti-loosening pad 204 , the preset distance is equal to zero.

In the embodiment of the present application, as shown in FIG. 13 and FIG. 14 , the locking body 201 includes an abutting portion 2011 and a side wall 2012 with an internal thread, the abutting portion 2011 and the side wall 2012 form a cylindrical structure, and the abutting portion 2011 is formed with the second through hole 2032 and the groove 205. The outer wall of the extension rod 206 is provided with a locking external thread 208, and the locking member 200 is connected with the locking external thread 208 of the first end 206A of the extension rod 206 through the internal thread provided on the side wall 2012.

In the embodiment of the present application, as shown in Fig. 6, Fig. 13-Fig. 14, the side wall of the second through hole 2032 protrudes from the bottom surface of the groove 205, and the inner wall of the anti-loosening pad 204 surrounds the side wall of the second through hole 2032. The position of the anti-loosening pad 204 is limited by the side wall of the second through hole 2032, and when the locking member 200 moves along the axial direction of the extension rod 206 and contacts the first end 100A of the connecting rod 100 to generate friction, the anti-loosening pad 204 will not be displaced in the groove 205 due to the friction, causing the anti-loosening pad 204 to deviate from the predetermined position area.

However, alternatively, in certain other embodiments, the groove 205 may be omitted, as long as the anti-loosening pad 204 is arranged between the first end 100A of the connecting rod 100 and the locking body 201 , for example but not limited to, the anti-loosening pad 204 is arranged on the top surface of the locking body 201 .

In the embodiment of the present application, the groove 205 is formed on the abutment portion 2011 of the locking body 201, and the anti-loosening pad 204 is arranged in the groove 205. The groove 205 surrounds the periphery of the through hole 203, and the thickness of the anti-loosening pad 204 is greater than the height of the side wall of the second through hole 2032. Therefore, when the locking member 200 moves along the axial direction of the extension rod 206 and contacts the lower end surface of the first end 100A of the connecting rod 100, the anti-loosening pad 204 is squeezed and deformed to increase the friction between the anti-loosening pad 204 and the first end 100A of the connecting rod 100 until the anti-loosening pad 204 and the first end 100A of the connecting rod 100 are in contact. 00A is pressed against the lower end surface of the anti-loosening pad 204, and the deformation degree of the anti-loosening pad 204 no longer changes. Due to the deformation of the anti-loosening pad 204, the friction force between the anti-loosening pad 204 and the first end 100A of the connecting rod 100 is greater. When the threaded fit between the first connecting part 101' and the second connecting part 207' tends to loosen and rotate, it can better hinder the further loosening and rotation of the threaded connection between the first connecting part 101' and the second connecting part 207', thereby improving the locking effect of the assembly connection between the connecting rod 100 and the extension rod 206, and further strengthening the stability of the assembly connection between the connecting rod 100 and the extension rod 206.

When the device 1 is used, the center of gravity of the device body 10 is transferred to the connection with the extension rod assembly 20. The locking force generated by the locking member 200 abutting against the end face of the first end 100A of the device body 10 converts the center of gravity torque of the device body 10 into an axial force of equal magnitude and opposite direction. The locking force generated by the locking member 200 abutting against the end face of the first end 100A of the device body 10 and the friction force generated by the surface of the anti-loosening pad 204 on the end face of the first end 100A can overcome the axial force of the device body 10 generated by the center of gravity torque, so that the device 1 can ignore the rotational looseness of the device body 10 caused by the insufficient axial locking force of the extension rod 206 due to the center of gravity torque of the device body 10. At the same time, when the cooperation between the device body 10 and the extension rod assembly 20 has a tendency to rotate loose, the locking member 200 can also be used to prevent the further loosening of the connection between the device body 10 and the extension rod 206.

In the embodiment of the present application, in order to increase the friction coefficient between the anti-loosening pad 204 and the first end 100A of the connecting rod 100, a plurality of protrusions (not shown) may be further provided on the surface of the anti-loosening pad 204 on the side opposite to the bottom surface of the groove 205. In one example, the plurality of protrusions of the anti-loosening pad 204 may be point-shaped protrusions, that is, the surface of the anti-loosening pad 204 is provided with a plurality of protrusions, and the plurality of protrusions stop against the lower end surface of the first end 100A of the connecting rod 100, so that the friction force formed when the anti-loosening pad 204 stops against the first end 100A of the connecting rod 100 is greater, and the locking effect is further improved.

In the embodiment of the present application, the anti-loosening pad 204 can be, for example but not limited to, a gasket made of rubber, silicone or plastic materials. Of course, according to the above description, those skilled in the art can also choose to use other deformable materials to make the anti-loosening pad 204, as long as it can meet the effect of increasing the friction with the first end 100A of the connecting rod 100. In this regard, the embodiment of the present application may not make specific limitations.

In the embodiment of the present application, in order to facilitate the user to manually tighten the locking member 200 so that the locking member 200 is threadedly connected to the second end 206B of the extension rod 206, a protrusion structure can also be provided on the outer surface of the locking body 201. By providing the protrusion structure, when the user tightens the locking member 200, the friction coefficient of the locking member 200 is larger, which can prevent the locking member 200 from slipping during the tightening process. Optionally, in an example, as shown in FIG6 , the multiple protrusions on the surface of the locking body 201 are mesh line protrusions. Of course, in the embodiment of the present application, the protrusion structure on the surface of the locking body 201 can also adopt other structural forms in the prior art, which will not be described in detail here.

In the embodiment of the present application, in order to further increase the friction coefficient between the first end 100A of the connecting rod 100 and the locking member 200, an elastic layer (not shown in the figure) may be further provided at the first end 100A of the connecting rod 100, that is, an elastic layer is provided on the surface of one side of the first end 100A of the connecting rod 100 facing the first end 206A of the extension rod 206. When the extension rod 100 and the connecting rod 100 of the nonlinear node detector are connected and fixed by the second connecting portion 207' and the first connecting portion 101', the anti-loosening pad 204 abuts against the elastic layer of the first end 100A of the connecting rod 100. For example, an elastic layer may be bonded around the threaded hole of the first connecting portion 101' of the first end 100A of the connecting rod 100 to further improve the locking effect between the connecting rod 100 and the locking member 200. The material of the elastic layer may be a plastic material. Of course, according to the above description, those skilled in the art may also choose to use other elastic materials to make the elastic layer, such as rubber or silicone materials, and the embodiments of the present application may not be specifically limited to this.

In the embodiment of the present application, the internal thread of the second connecting portion 207 ′ and the internal thread of the side wall 2012 of the locking body 201 may have the same thread rotation direction. When the connecting rod 100 and the locking piece 200 are in a state of being pressed against each other, if the connecting rod 100 shows a tendency to loosen and rotate, the first end 100A of the connecting rod 100 generates a friction force on the anti-loosening pad 204 of the locking piece 200, which causes the locking piece 200 to rotate in the same direction as the connecting rod 100. When the locking piece 200 rotates in the same direction as the connecting rod 100, since the internal thread of the second connecting portion 207' is arranged in the same direction of rotation as the internal thread of the side wall 2012 of the locking body 201, that is, the external thread of the first connecting portion 101' is arranged in the same direction of rotation as the internal thread of the side wall 2012 of the locking body 201, the movement direction of the connecting rod 100 and the locking piece 200 in the axial direction of the connecting rod 100 is consistent, so that the connecting rod 100 and the locking piece 200 can still maintain a pressed state, thereby avoiding loosening of the fit between the first connecting portion 101' and the second connecting portion 207'.

In the embodiment of the present application, the internal thread of the first connection part 101 and the internal thread of the side wall 2012 of the locking body 201 have the same thread rotation direction, which means that the internal thread of the first connection part 101 and the internal thread of the side wall 2012 of the locking body 201 are both left-handed threads, or the internal thread of the first connection part 101 and the internal thread of the side wall 2012 of the locking body 201 are both right-handed threads.

In some other optional embodiments, the internal thread of the second connection part 207' and the internal thread of the side wall 2012 of the locking body 201 may also be in opposite directions. After the connecting rod 100 and the extension rod 206 are assembled by the threaded fit between the first connection part 101' and the second connection part 207', the locking member 200 is rotated in the opposite direction to make the end face of the anti-loosening pad 204 press against the first end 100A of the connecting rod 100. The friction force of the end face of the anti-loosening pad 204 of the locking member 200 against the upper end face of the first end 100A of the connecting rod 100 will drive the connecting rod 100 to rotate in the same direction. Since the internal thread of the second connecting portion 207' and the internal thread of the side wall 2012 of the locking body 201 have different thread rotation directions, that is, the external thread of the first connecting portion 101' and the internal thread of the side wall 2012 of the locking body 201 have different thread rotation directions, when the connecting rod 100 and the locking member 200 rotate in the same direction, the connecting rod 100 and the locking member 200 will move toward each other in the axial direction of the connecting rod 100, so that the connecting rod 100 and the locking member 200 are further tightened, thereby enhancing the locking effect of the connecting rod 100. Furthermore, since the thread directions of the internal thread of the first connecting part 101 and the internal thread of the side wall 2012 of the locking body 201 can also be opposite, after the connecting rod 100 and the extension rod 206 are assembled through the threaded cooperation between the first connecting part 101 and the second connecting part 207, the operator can screw the locking piece 200 with one hand to make the locking piece 200 move axially along the extension rod 206 until the upper end face of the locking piece 200 is tightly pressed against the lower end face of the first end 100A of the connecting rod 100.

In the embodiment of the present application, the thread rotation direction of the internal thread of the first connecting part 101 and the internal thread of the side wall 2012 of the locking body 201 are opposite, which means that the internal thread of the first connecting part 101 is a left-handed thread, and the internal thread of the side wall 2012 of the locking body 201 is a right-handed thread, or, the internal thread of the first connecting part 101 is a right-handed thread, and the internal thread of the side wall 2012 of the locking body 201 is a left-handed thread.

In the embodiment of the present application, the second end 206B of the extension rod 206 may also be provided with a third connection portion 209, and the third connection portion 209 is suitable for being threadedly connected with the second connection portion 207'. For example but not limited to, the third connection portion 209 may be a stud provided at the second end 206B of the extension rod 206. By providing the third connection portion 209 at the second end 206B of the extension rod 206, after the extension rod 206 and the connecting rod 100 are screwed together, the second end 206B of the extension rod 206 may be further connected to another rod body, and the other rod body only needs to be provided with a threaded hole having the same or similar structure as the second connection portion 207'.

In addition, in some other optional embodiments, the second end 206B of the extension rod 206 may also be provided with a second connection portion 207'. Specifically, a threaded hole may be provided at the middle position of the second end 206B of the extension rod 206 as the second connection portion 207' of the extension rod 206. By providing the second connection portion 207' at the second end 206B of the extension rod 206, after the extension rod 206 and the connecting rod 100 are tightened, the second end 206B of the extension rod 206 may be further connected to another rod body, and the other rod body only needs to be provided with a stud having the same or similar structure as the first connection portion 101'.

Of course, in the embodiment of the present application, the connection structure of the second end 206B of the extension rod 206 is not limited to the implementation structure described in the above embodiment, and may also be other suitable implementation structures. For example, but not limited to, the second end 206B of the extension rod 206 is provided with at least one pivot or pivot hole, so that it can be pivotally connected with other components to be connected.

However, in some other embodiments, the spacer 30 may be omitted. As long as the length of the stud of the first connection part 101' is greater than the depth of the threaded hole of the second connection part 207', when the extension rod 206 and the nonlinear node detector are connected and fixed to the first connection part 101' through the second connection part 207', the stud of the first connection part 101' can ensure that the end surface of the first end 100A of the connecting rod 100 and the top surface 202 of the locking member 200 have the preset distance when the screwing degree of the screw hole of the second connection part 207' reaches the maximum value, so that the preset stroke can be left for the axial movement of the locking member 200 along the extension rod 206. When the locking member 200 moves axially toward the nonlinear node detector to the preset stroke by screwing the locking member 200 outward, the top surface 202 of the locking member 200 of the locking member 200 is pressed against the first end 100A of the connecting rod 100. Of course, if the locking member 200 further includes an anti-loosening washer 204 , the locking member 200 moves the preset stroke along the axial direction of the extension rod 206 to tighten the first end 100A of the connecting rod 100 through the anti-loosening washer 204 .

The device 1 with an extension rod provided in the embodiment of the present application is provided with a locking piece 200 on the extension rod assembly 20. During assembly, the locking piece 200 is first tightened with the extension rod 206, and then the device body 10 (i.e., the connecting rod 100 of the nonlinear node detector in Example 1) is connected to the extension rod assembly 20 through the first connecting portion 101' and the second connecting portion 207' to achieve fixation. After the connecting rod 100 of the nonlinear node detector is fixedly connected to the extension rod assembly 20, the locking piece 200 of the extension rod assembly 20 is screwed in reverse to move the locking piece 200 toward the nonlinear node detector along the axial direction of the extension rod 206 until the locking piece 200 moves a preset stroke to achieve abutment with the connecting rod 100 of the nonlinear node detector, thereby generating pressure on the nonlinear node detector. When the connection between the first connecting part 101' and the second connecting part 207' tends to loosen and rotate, since the locking member 200 abuts against the connecting rod 100 of the nonlinear node detector, a friction force in the opposite direction of the loosening of the connection can be generated, thereby hindering the further loosening of the connection between the first connecting part 101' and the second connecting part 207', thereby achieving the locking of the assembly connection between the nonlinear node detector and the extension rod assembly 20, preventing the connection between the connecting rod 100 of the nonlinear node detector and the extension rod assembly 20 from loosening, which is beneficial to enhancing the stability of the assembly connection between the nonlinear node detector and the extension rod assembly 20 and improving the user experience.

However, it can be changed that in some embodiments, the first connecting portion 101' can also be a threaded hole arranged on the second boss 302 instead of a stud, and the threaded hole can extend to the first end 100A of the device body 10; the second connecting portion 207' is a stud arranged at the first end of the extension rod 206 instead of a threaded hole.

Alternatively, in some other embodiments, the spacer 30 may also be the anti-loosening pad 204, wherein:

The locking body 201 is provided with the second through hole 2032 , the anti-loosening pad 204 is provided with the first through hole 2031 , the first through hole 2031 is connected with the second through hole 2032 , and the through hole 203 of the locking member 200 includes the first through hole and the second through hole. The locking body 201 is threadedly connected to the extension rod 206, and the anti-loosening pad 204 is arranged between the equipment body 10 and the locking body 201. When the extension rod 206 and the equipment body 10 are connected and fixed with the first connection parts 101 and 101' through the second connection parts 207 and 207', the equipment body 10 has a first end 100A of the first connection parts 101 and 101' and a preset distance between the anti-loosening pad 204, and the locking member 200 can move the preset stroke toward the equipment body 10 along the axial direction of the extension rod 206 to press against the end surface of the first end 100A of the equipment body 10 through the anti-loosening pad 204; wherein the preset distance is greater than or equal to zero.

In an optional embodiment, the preset distance is, for example, zero, and the preset stroke is greater than zero.

In an optional embodiment, the locking member 200 includes the anti-loosening pad 204, that is, the spacer 30 is the anti-loosening pad 204 of the locking member 200; the locking body 201 has a groove 205, the anti-loosening pad 204 is arranged in the groove 205, the groove 205 surrounds the periphery of the second through hole 2032, and the thickness of the anti-loosening pad 204 is greater than the height of the side wall of the second through hole 2032.

It should be noted that the above embodiments of the present application are mainly described by taking the nonlinear node detector as an example, and its specific structure includes the connecting rod 100. However, for SLR cameras, etc., the connecting rod 100 does not exist. These are just the differences in the specific structures between different device bodies 10, but these are not the core of innovation. For technicians in the relevant technical field, they can understand the innovative essence of the present application and expand, extend and apply the innovative essence to other device bodies 10 that need to add extension rods, that is, the first connecting part 101 is provided on the first end 100A of the device body 10, and the extension rod assembly 20 is added; the extension rod assembly 20 includes the locking member 200, and when the extension rod 206 and the device body 10 are connected and fixed by the second connecting part 207 on the extension rod 206 and the first connecting part 101, the locking member 200 can move a preset stroke along the axial direction of the extension rod 206 toward the device body 10 to press against the device body 10. As for the specific innovative details, for example, the specific structures of the first connecting part 101, the second connecting part 207, the locking member 200, etc., the setting of the spacer 30, the matching relationship and positional relationship between the components, etc., they can be implemented on various other suitable device bodies 10 with reference to the above-mentioned specific embodiments. They are generally applicable and will not be elaborated in this application.

Example 3

Based on the same inventive concept, the embodiment of the present application further proposes an extension rod assembly 20, as shown in FIGS. 1 to 14 , the extension rod assembly 20 includes an extension rod 206 and a locking member 200, wherein the locking member 200 is threadedly connected to the extension rod 206;

The extension rod 206 is provided with a second connection portion 207, and the second connection portion 207 can be detachably connected to the first connection portion 101 provided on the device body 10;

The locking member 200 is provided with a through hole 203, and the first connecting portion 101 or the second connecting portion 207 can pass through the through hole 203;

When the extension rod 206 and the device body 10 are connected and fixed via the second connection portion 207 and the first connection portion 101 , the locking member 200 can move a preset stroke along the axial direction of the extension rod 206 toward the device body 10 to press against the device body 10 .

In this embodiment, the specific implementation method of the extension rod assembly 20 is similar to the extension rod assembly 20 in the device 1 with an extension rod in the above embodiment. For details, please refer to the detailed description of the extension rod assembly 20 in the device 1 with an extension rod in the above embodiment, which will not be repeated here.

The above description includes examples of one or more embodiments. Of course, it is impossible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", as explained by "including" used as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to mean "non-exclusive or".

Claims (24)

1. An apparatus having an extension pole, comprising an apparatus body and an extension pole assembly;

the extension rod assembly comprises an extension rod and a locking piece, and the locking piece is in threaded connection with the extension rod;

the first end of the equipment body is fixedly provided with a first connecting part, the extension rod is provided with a second connecting part, and the first connecting part is in threaded connection with the second connecting part;

the locking piece is provided with a through hole, and the first connecting part or the second connecting part can pass through the through hole;

In a state that the extension rod is connected with the equipment body through the second connecting part and is fixed with the first connecting part, a preset distance is reserved between the first end of the equipment body with the first connecting part and the locking piece, and the locking piece can move towards the equipment body along the axial direction of the extension rod for a preset stroke so as to abut against the end face of the first end of the equipment body; wherein the preset travel is greater than or equal to the preset distance.

2. The device of claim 1, wherein the device body is an electronic device or a mechanical device.

3. The apparatus of claim 1, wherein the extension rod includes oppositely disposed first and second ends, the second connection being disposed on the first end of the extension rod;

the locking piece is sleeved on the first end of the extension rod and is in threaded connection with the first end of the extension rod;

one of the second connecting part and the first connecting part can pass through the through hole on the locking piece to be connected and fixed with the other one of the two parts.

4. The apparatus of claim 3, wherein the locking member includes a top surface, the top surface being an end surface facing the first end of the apparatus body, the through-hole extending through the top surface;

The apparatus further includes a spacer including a spacing portion between at least an end face of the first end of the apparatus body and a top face of the locking member to form the preset distance.

5. The apparatus of claim 4, wherein the spacer is a first boss provided on an end face of the first end of the extension rod, and the second connection portion is provided on the first boss, wherein the second connection portion is threadably connected to the first connection portion through the through hole, the first boss is capable of passing through the through hole and protruding from a top face of the locking member, and a portion of the first boss protruding from the top face of the locking member is located between the end face of the first end of the apparatus body and the top face of the locking member.

6. The apparatus of claim 5, wherein the first connection portion is a threaded hole provided at a first end of the apparatus body and the second connection portion is a stud provided on the first boss; or (b)

The first connecting part is a stud arranged at the first end of the equipment body, and the second connecting part is a threaded hole arranged in the first boss.

7. The apparatus of claim 5, wherein the locking member further comprises a locking pad and a locking body, wherein the locking pad is provided with a first through hole, the locking body is provided with a second through hole, the through hole of the locking member comprises the first through hole and the second through hole which are communicated, and the locking body is in threaded connection with the extension rod;

The locking pad is arranged on the locking body and faces the end face of the first end of the equipment body;

the locking pad is not higher than the first boss in a state that the extension rod is fixed with the equipment body through the connection of the second connecting part and the first connecting part.

8. The apparatus of claim 4, wherein the spacer is a second boss provided on an end face of the first end of the apparatus body, the first connection portion is provided on the second boss, wherein the first connection portion is threadably connected to the second connection portion through the through hole, the second boss is capable of passing through the through hole and contacting an end face of the first end of the extension rod, and a portion of the second boss not passing through the through hole is located between the end face of the first end of the apparatus body and the top face of the locking member.

9. The apparatus of claim 8, wherein the first connection is a threaded bore disposed in the second boss and the second connection is a stud disposed at the first end of the extension rod; or (b)

The first connecting part is a stud arranged on the second boss, and the second connecting part is a threaded hole arranged at the first end of the extension rod.

10. The apparatus of claim 8, wherein the locking member further comprises a locking pad and a locking body, wherein the locking pad is provided with a first through hole, the locking body is provided with a second through hole, the through hole of the locking member comprises the first through hole and the second through hole which are communicated, and the locking body is in threaded connection with the extension rod;

The locking pad is arranged on the locking body and faces the end face of the first end of the equipment body;

The locking pad is positioned between the end face of the first end of the equipment body and the top face of the locking piece in a state that the extension rod is fixedly connected with the equipment body through the second connecting portion and the first connecting portion.

11. The apparatus of claim 7 or 10, wherein the locking body has a groove, the locking pad being disposed within the groove, the groove surrounding the periphery of the second through hole.

12. The apparatus of claim 11, wherein the locking body includes an abutment and a sidewall having an internal thread, the abutment and sidewall enclosing a cylindrical structure, the abutment having the second through hole and the recess formed therein.

13. The apparatus of claim 12, wherein the lockwasher is a deformable washer; the side wall of the second through hole protrudes out of the bottom surface of the groove, and the inner wall of the locking pad surrounds the side wall of the second through hole.

14. The apparatus of claim 4, wherein the locking member further comprises a locking body provided with a second through hole, the through hole of the locking member comprises the second through hole, the locking body is in threaded connection with the extension rod, the spacer is a locking pad, the locking pad is arranged between the apparatus body and the locking body, and in a state that the extension rod and the apparatus body are connected with the first connection part through the second connection part, a preset distance is provided between the first end of the apparatus body with the first connection part and the locking pad, the locking member can move towards the apparatus body along the axial direction of the extension rod by the preset stroke so as to abut against the end face of the first end of the apparatus body through the locking pad; wherein the preset distance is greater than or equal to zero.

15. The apparatus of claim 14, wherein the locking member further comprises the locking pad having a first through hole, the through hole of the locking member comprises the first through hole and the second through hole which are penetrated, the locking body has a groove, the locking pad is disposed in the groove, the groove surrounds the periphery of the second through hole, and the thickness of the locking pad is greater than the height of the sidewall of the second through hole.

16. The apparatus of claim 12, wherein the outer wall of the extension rod is provided with locking external threads, and the locking body is threadedly coupled to the extension rod.

17. The apparatus of claim 12, wherein an outer surface of the sidewall of the locking body is provided with a protrusion structure.

18. The apparatus of claim 12, wherein the first connection portion is a threaded bore, and wherein a thread rotation direction of the first connection portion is the same as or opposite to a thread rotation direction of the internal thread of the sidewall of the locking body; or (b)

The second connecting part is a threaded hole, and the rotation direction of the threads of the second connecting part is the same as or opposite to that of the internal threads of the side wall of the locking body.

19. The apparatus of claim 11, wherein a side surface of the anti-loosening pad facing away from a bottom surface of the recess is provided with a plurality of protrusions.

20. A device according to claim 3, wherein the second end of the extension rod is provided with a third connection portion adapted to be screwed with the second connection portion of another of the extension rods; or (b)

The second connecting part is also arranged on the second end of the extension rod and is suitable for being in threaded connection with the other extension rod.

21. The apparatus of claim 1, wherein the first end of the apparatus body is provided with an elastic layer on an end face facing the first end of the extension pole.

22. The apparatus of claim 1, wherein the apparatus body is a detector.

23. The apparatus of claim 22, wherein the detector is a nonlinear junction detector or a metal detector.

24. The apparatus of claim 22, wherein the probe comprises a probe and a handle, the probe being connected to one end of the handle, the other end of the handle being provided with the first connection for threaded connection with the second connection of the extension pole assembly.