Sampling rod

Abstract

The invention provides a sampling rod which comprises a rod body, a paper clamping device and a paper carrying frame, the rod body is provided with a paper inserting groove, the paper clamping device is arranged in the rod body and used for clamping and releasing test paper inserted into the paper inserting groove, the paper carrying frame is arranged on the rod body, the paper carrying frame and the paper inserting groove are arranged side by side, and the paper carrying frame can retract and stretch out relative to the rod body. The outer end of the paper carrying frame is located outside the rod body all the time. The sampling rod can prevent hands of a person from contacting test paper in the sampling and detection processes, so that a sample is prevented from being polluted, and the operation is convenient and fast.

Description

Technical Field

[0001] The present invention relates to the field of sampling, and particularly to a sampling rod. Background Art

[0002] The sampling rod is used to collect a sample for further detection and analysis of the sample. In the related art, a slot is provided at the front end of the sampling rod and a protrusion is provided at the side. When in use, one end of the test paper needs to be inserted into the slot, the other end of the preset through hole of the test paper is bent reversely, and the protrusion is snapped into the through hole, so as to fix the test paper and cover it on the front end of the sampling rod. Then, the sampling rod is operated to make the test paper contact the item to be sampled, and the sampling rod is moved to make the test paper slide on the surface of the item, so as to collect the sample. After sampling, it is necessary to manually remove the test paper from the sampling rod and then insert it into the detector to detect and analyze the sample on the test paper. Therefore, there are many manual operations in the sampling process of the sampling rod in the related art, which is inconvenient to use. At the same time, too much contact between the human hand and the test paper will also cause the sample to be contaminated, especially the contact during the process of removing the test paper after sampling is likely to cause the sample to be contaminated. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent. For this purpose, an embodiment of the present invention provides a sampling rod, which is convenient to operate and can avoid contamination of the test paper.

[0004] The sampling rod according to the embodiment of the present invention includes:

[0005] A rod body, wherein a paper inserting slot is provided on the rod body;

[0006] A paper clamping device, which is arranged in the rod body and is used for clamping and releasing the test paper inserted into the paper inserting slot;

[0007] A paper carrier, which is arranged on the rod body and is arranged side by side with the paper inserting slot. The paper carrier can retract and extend relative to the rod body, and the outer end of the paper carrier is always located outside the rod body.

[0008] The sampling rod according to the embodiment of the present invention fixes the test paper through the paper inserting slot and the paper clamping device, and the paper carrier bears the test paper. During sampling, the sampling rod is turned over, the test paper is pressed on the item to be sampled through the paper carrier, and the test paper is driven to move for sampling. After sampling, the test paper is inserted into the socket of the detection device, and the paper carrier is abutted against the test device. During the process of inserting the test paper, the paper carrier retracts into the rod body and always keeps bearing the test paper to ensure the insertion of the test paper and avoid bending of the test paper. Therefore, the sampling rod according to the embodiment of the present invention can avoid the contact between the human hand and the test paper during both the sampling and detection processes, thereby avoiding contamination of the sample and being convenient to operate.

[0009] In some embodiments, the rod body is provided with an installation cavity, the installation cavity is communicated with the paper insertion slot, the paper clamping device is arranged in the installation cavity, and is arranged opposite to or side by side with the paper insertion slot.

[0010] In some embodiments, the mounting cavity includes a mounting side and a paper clamping side that are relatively arranged, and the paper clamping device includes a lever and a first elastic member, the lever has a pressing end and a paper clamping end that are relatively arranged, and the first elastic member is provided between the paper clamping end and the mounting side, the first elastic member is used to drive the paper clamping end to move toward the paper clamping side, and the pressing end is used to drive the paper clamping end to move away from the paper clamping side.

[0011] In some embodiments, a fulcrum protrusion is provided on the side of the paper clamp, and the fulcrum protrusion is against the middle part of the lever.

[0012] In some embodiments, the paper clamping side is located between the installation side and the paper carrier, and the paper insertion slot is flush with the paper clamping side.

[0013] In some embodiments, the paper clamping side is provided with a paper clamping groove, and the paper clamping end is provided with a paper clamping boss, and the paper clamping end drives the paper clamping boss to enter and exit the paper clamping groove.

[0014] In some embodiments, the sampling rod further includes a button, which is provided on the rod body and abuts against the pressing end, and the button is used to press the pressing end to drive the paper clamping end to move away from the paper clamping side.

[0015] In some embodiments, the sampling rod also includes a second elastic member, the rod body is provided with a telescopic cavity, the paper carrier is arranged in the telescopic cavity and can be retracted and extended relative to the telescopic cavity, and the second elastic member is arranged in the telescopic cavity and connected to the paper carrier to drive the paper carrier to extend.

[0016] In some embodiments, the sampling rod further includes an anti-slip component, which is disposed at the outer end of the paper carrier and at one end of the paper carrier facing the paper insertion slot.

[0017] In some embodiments, the sampling rod further includes a buffer component, which is disposed at the outer end of the paper carrier and at one end of the extending direction of the paper carrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a sampling rod according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the use of the sampling rod of the embodiment of the present invention. Figure 1 ;

[0020] Figure 3 is a partial structural cross-sectional view of the sampling rod according to an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of the usage state of the sampling rod according to an embodiment of the present invention Figure 2 .

[0022] Reference numerals:

[0023] 1. Rod body; 11. Paper insertion slot; 12. Installation cavity; 121. Installation side; 122. Paper clamping side; 123. Fulcrum protrusion; 124. Paper clamping groove; 13. Telescopic cavity; 2. Paper clamping device; 21. Lever; 211. Pressing end; 212. Paper clamping end; 213. Paper clamping boss; 22. First elastic member; 3. Paper carrier; 4. Button; 5. Second elastic member; 6. Anti-slip member; 7. Buffer member; 8. Test strip; 9. Detection device. Detailed description of the specific implementation mode

[0024] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0025] Next, reference is made to Figures 1 - 4 to describe the sampling rod according to an embodiment of the present invention.

[0026] As Figures 1 - 4 shown, the sampling rod according to an embodiment of the present invention includes a rod body 1, a paper clamping device 2 and a paper carrier 3.

[0027] The rod body 1 is provided with a paper insertion slot 11. The paper clamping device 2 is arranged in the rod body 1 and is used for clamping and releasing the test strip 8 inserted into the paper insertion slot 11. The paper carrier 3 is arranged on the rod body 1 and is arranged side by side with the paper insertion slot 11. The paper carrier 3 can be retracted and extended relative to the rod body 1, and the outer end of the paper carrier 3 is always located outside the rod body 1.

[0028] Specifically, as Figures 1 - 4 shown, the rod body 1 extends in the front-rear direction and has a holding end and a sampling end arranged oppositely. The holding end is for the user to hold, and the front end face of the sampling end is provided with a strip-shaped paper insertion slot 11 extending in the left-right direction for inserting the test strip 8. The sampling end is internally provided with a paper clamping device 2 for clamping and releasing the test strip 8 inserted into the paper insertion slot 11. Preferably, the paper insertion slot 11 extends from the front end face of the sampling end to the left end face and the right end face of the sampling end. The part of the paper insertion slot 11 on the left end face of the sampling end and the part on the right end face of the sampling end are arranged oppositely and communicated, so that the paper insertion slot 11 can insert a wider test strip 8 to be applicable to various models of test strips 8.

[0029] The paper carrier 3 is provided at the sampling end of the rod body 1 and is arranged side by side with the paper insertion slot 11 in the vertical direction. The paper carrier 3 can retract and extend relative to the rod body 1 in the front-rear direction. The paper carrier 3 has an outer end and an inner end arranged oppositely in the front-rear direction. The inner end of the paper carrier 3 is always located inside the rod body 1, and the outer end of the paper carrier 3 is always located outside the rod body 1.

[0030] As Figure 2 and Figure 4 shown, when the sampling rod is in use, first insert one end of the test strip 8 into the paper insertion slot 11, and make the paper clamping device 2 clamp one end of the test strip 8 to fix the test strip 8. The other end of the test strip 8 is located outside the rod body 1 and is carried on the outer end of the paper carrier 3. At this time, it is in the original state. Then turn over the sampling rod so that the other end of the test strip 8 abuts against the item to be sampled. At this time, the outer end of the paper carrier 3 presses the other end of the test strip 8 against the item to be sampled, and slide the other end of the test strip 8 on the item to be sampled by moving the sampling rod to perform sampling.

[0031] After sampling, turn the sampling rod back to the original state, then insert the other end of the test strip 8 into the socket of the detection device 9, and push the test strip 8 into the socket by the sampling rod. The front end of the paper carrier 3 abuts against the outer wall surface of the detection device, and the paper carrier 3 retracts into the rod body 1 as the test strip 8 moves into the socket until the test strip 8 is inserted into the designated position and the detection of the collected sample is completed. During the process of the test strip 8 moving into the socket, the paper carrier 3 always supports the part of the test strip 8 that has not entered the socket to ensure that the test strip 8 can be inserted into the designated position and prevent the test strip 8 from bending during the insertion process.

[0032] After the detection is completed, pull out the test strip 8 from the socket by the sampling rod. The paper carrier 3 extends from the sampling end of the rod body 1 during the pulling-out process and always supports the test strip 8. Then the test strip 8 can be sampled repeatedly, or the paper clamping device 2 can release one end of the test strip 8 and replace the test strip 8.

[0033] Therefore, the sampling rod of the embodiment of the present invention can avoid the contact of the human hand with the test strip during both the sampling and detection processes, thereby avoiding the contamination of the test sample and having convenient operation.

[0034] In some embodiments, the rod body 1 is provided with an installation cavity 12. The installation cavity 12 is communicated with the paper insertion slot 11. The paper clamping device 2 is arranged in the installation cavity 12 and is arranged oppositely or side by side with the paper insertion slot 11.

[0035] As Figure 3 shown, the rod body 1 is provided with an installation cavity 12. The installation cavity 12 is communicated with the paper insertion slot 11. One end of the test strip 8 is inserted into the paper insertion slot 11 and enters the installation cavity 12. The installation cavity 12 is provided with a paper clamping device 2. The paper clamping device 2 is arranged oppositely or side by side with the paper insertion slot 11 in the front-rear direction to clamp and release one end of the test strip 8.

[0036] In some embodiments, the installation cavity 12 includes an installation side surface 121 and a paper clamping side surface 122 that are oppositely arranged. The paper clamping device 2 includes a lever 21 and a first elastic member 22. The lever 21 has a pressing end 211 and a paper clamping end 212 that are oppositely arranged. A first elastic member 22 is provided between the paper clamping end 212 and the installation side surface 121. The first elastic member 22 is configured to drive the paper clamping end 212 to move toward the paper clamping side surface 122, and the pressing end 211 is configured to drive the paper clamping end 212 to move away from the paper clamping side surface 122.

[0037] As Figure 3 shown, the installation cavity 12 includes an installation side surface 121 and a paper clamping side surface 122 that are oppositely arranged in the up-down direction. The paper clamping device 2 includes a lever 21 and a first elastic member 22. The lever 21 extends in the front-back direction and has a pressing end 211 and a paper clamping end 212 that are oppositely arranged. The pressing end 211 is used to operate the movement of the lever 21, and a first elastic member 22 that extends in the up-down direction is provided between the paper clamping end 212 and the installation side surface 121.

[0038] In the natural state, the first elastic member 22 exerts an elastic force on the paper clamping end 212 so that the paper clamping end 212 abuts against the paper clamping side surface 122. At this time, one end of the test strip 8 can be clamped between the paper clamping end 212 and the paper clamping side surface 122. When clamping the test strip 8, the paper clamping end 212 and the paper clamping side surface 122 indirectly abut against each other through the test strip 8.

[0039] When pressing the pressing end 211, the paper clamping end 212 overcomes the elastic force of the first elastic member 22 and moves away from the paper clamping side surface 122. At this time, the clamped test strip 8 can be released, and one end of the test strip 8 can be inserted between the paper clamping end 212 and the paper clamping side surface 122.

[0040] The first elastic member 22 can be a spring or a rubber block, etc. Preferably, it is a spring.

[0041] Preferably, the installation side surface 121 is provided with a positioning groove, and the paper clamping end 212 is provided with a positioning protrusion that is oppositely arranged to the positioning groove. One end of the spring serving as the first elastic member 22 is located in the positioning groove, and the other end is sleeved on the outer periphery of the positioning protrusion to prevent the spring from moving and toppling.

[0042] It can be understood that the structure of the paper clamping device is not limited to including a lever and a first elastic member. In some other embodiments, the paper clamping device is a clamping jaw, and the clamping jaw and the paper insertion slot are oppositely arranged in the front-back direction.

[0043] In some embodiments, the paper clamping side surface 122 is provided with a fulcrum protrusion 123, and the fulcrum protrusion 123 abuts against the middle part of the lever 21.

[0044] As Figure 3As shown, a fulcrum protrusion 123 is provided on the paper clamping side surface 122, and the fulcrum protrusion 123 abuts against the middle part of the lever 21 between the paper clamping end 212 and the pressing end 211 to serve as the fulcrum for the rotation of the lever 21.

[0045] It can be understood that in some other embodiments, a rotating shaft extending in the left - right direction can also be provided in the installation cavity, and the middle part of the lever is passed through the rotating shaft.

[0046] In some embodiments, the paper clamping side surface 122 is located between the installation side surface 121 and the paper carrier 3, and the paper insertion slot 11 is flush with the paper clamping side surface 122.

[0047] As Figure 3 shown, the installation cavity 12 and the paper carrier 3 are arranged side by side in the up - down direction. The wall surface of the installation cavity 12 adjacent to the paper carrier 3 is the paper clamping side surface 122, and the wall surface away from the paper carrier 3 is the installation side surface 121. The paper insertion slot 11 is flush with the paper clamping side surface 122. One end of the test strip 8 enters the installation cavity 12 through the paper insertion slot 11 and is carried on the paper clamping side surface 122, so as to be easily clamped, and at the same time, the test strip 8 is closer to the paper carrier 3, which is convenient for the paper carrier 3 to carry and press the test strip 8.

[0048] It can be understood that in some embodiments, the installation side surface can also be arranged between the paper clamping side surface and the paper carrier, and the paper insertion slot can also be arranged between the paper clamping side surface and the installation side surface.

[0049] In some embodiments, a paper clamping groove 124 is provided on the paper clamping side surface 122, and a paper clamping boss 213 is provided at the paper clamping end 212. The paper clamping end 212 drives the paper clamping boss 213 to enter and disengage from the paper clamping groove 124.

[0050] As Figure 3 shown, a paper clamping groove 124 is provided on the paper clamping side surface 122. The paper clamping groove 124 is located on the side of the fulcrum protrusion 123 facing the paper insertion slot 11. In other words, the paper clamping groove 124 and the fulcrum protrusion 123 are arranged at intervals from front to back. The paper clamping end 212 is provided with a paper clamping boss 213 opposite to the paper clamping groove 124. When the paper clamping end 212 abuts against the paper clamping side surface 122, the paper clamping boss 213 enters the paper clamping groove 124 to improve the stability of clamping the test strip 8. When releasing the test strip 8, the paper clamping boss 213 disengages from the paper clamping groove 124.

[0051] It should be noted that when clamping the test strip 8, the paper clamping boss 213 can abut against the test strip 8 and press a part of the test strip 8 into the paper clamping groove 124, or a perforation can be provided on the test strip 8, and the paper clamping boss 213 passes through the perforation and enters the paper clamping groove 124.

[0052] It can be understood that in some other embodiments, anti - slip patterns or anti - slip layers can also be provided on the paper clamping side surface and / or the paper clamping end to improve the stability of clamping the test strip.

[0053] In some embodiments, the sampling rod of the embodiments of the present invention further includes a button 4. The button 4 is provided on the rod body 1 and abuts against the pressing end 211. The button 4 is used to press the pressing end 211 to drive the paper clamping end 212 to move away from the paper clamping side 122.

[0054] As Figures 1 - 3 shown, the top surface of the rod body 1 is provided with a mounting hole communicating with the mounting cavity 12. The button 4 is provided in the mounting hole and is movable relative to the rod body 1 in the up and down directions. The top end of the button 4 is located outside the rod body 1, and the bottom end of the button 4 abuts against the pressing end 211. By pressing the button 4, the lever 21 is driven to rotate, so that the paper clamping end 212 moves away from the paper clamping side 122.

[0055] Preferably, the side wall surface of the button 4 is provided with a horizontally extending limiting boss. The diameter of the bottom end of the mounting hole is larger than that of the top end and forms a stepped surface. The stepped surface of the mounting hole is used to abut against the limiting boss to limit the extreme position of the button 4 moving outward relative to the mounting hole, so as to prevent the button 4 from coming out of the mounting hole. More preferably, the limiting boss is annular around the up and down direction.

[0056] Preferably, the bottom surface of the button 4 is an arc surface, and the pressing end 211 is provided with an arc surface groove to abut against the bottom surface of the button 4.

[0057] It can be understood that the sampling rod is not limited to being provided with a button. In some other embodiments, the pressing end extends outside the rod body, and the operator directly presses the pressing end.

[0058] In some embodiments, the sampling rod of the embodiments of the present invention further includes a second elastic member 5. The rod body 1 is provided with a telescopic cavity 13. The paper carrier 3 is provided in the telescopic cavity 13 and can be retracted and extended relative to the telescopic cavity 13. The second elastic member 5 is arranged in the telescopic cavity 13 and is connected to the paper carrier 3 to drive the paper carrier 3 to extend.

[0059] As Figure 3 shown, the rod body 1 is provided with a telescopic cavity 13. The telescopic cavity 13 and the mounting cavity 12 are arranged side by side and spaced in the up and down direction. The telescopic cavity 13 forms an opening on the front end surface of the rod body 1. The paper carrier 3 is provided in the telescopic cavity 13 and can be retracted and extended from the opening relative to the telescopic cavity 13, and the outer end of the paper carrier 3 is always located outside the telescopic cavity 13, and the inner end of the paper carrier 3 is always located inside the telescopic cavity 13.

[0060] The outer peripheral surface of the inner end of the paper carrier 3 is provided with a first stepped surface, and the inner peripheral surface of the telescopic cavity 13 is provided with a second stepped surface. The first stepped surface is always located in front of the second stepped surface. The second elastic member 5 is sleeved on the outer periphery of the inner end of the paper carrier 3 and abuts between the first stepped surface and the second stepped surface to play a buffering role and is used to drive the paper carrier 3 to extend.

[0061] Preferably, the rod body 1 includes an upper shell and a lower shell that are detachably connected. The upper shell is provided with an installation cavity 12, a paper clamping device 2, and a button 4, and the lower shell is provided with a telescopic cavity 13 and a paper carrier 3.

[0062] It can be understood that the setting position of the second elastic member is not limited to, for example Figure 3 As shown, in some other embodiments, the second elastic member extends in the front-rear direction and abuts between the rear end face of the paper carrier and the rear end face of the telescopic cavity. In other words, the paper carrier and the second elastic member are sequentially arranged in the telescopic cavity in the front-to-rear direction.

[0063] In some embodiments, the sampling rod of the embodiment of the present invention further includes an anti-slip member 6, and the anti-slip member 6 is provided at the outer end of the paper carrier 3 and at one end of the paper carrier 3 facing the paper insertion slot 11.

[0064] Such as Figures 1 - 3 As shown, the anti-slip member 6 is embedded at the top of the outer end of the paper carrier 3. The anti-slip member 6 is preferably made of anti-slip rubber material, and the anti-slip member 6 is used to contact the test strip 8 and prevent the test strip 8 from moving.

[0065] In some embodiments, the sampling rod of the embodiment of the present invention further includes a buffer member 7, and the buffer member 7 is provided at the outer end of the paper carrier 3 and on one side in the extending direction of the paper carrier 3.

[0066] Such as Figures 1 - 3 As shown, the buffer member 7 is embedded in the front end face of the paper carrier 3. The buffer member 7 is preferably made of rubber material, and the buffer member 7 is used to abut against the detection device 9 and play a buffering role.

[0067] Preferably, the outer end of the paper carrier 3 is T-shaped, and both the anti-slip member 6 and the buffer member 7 are strip-shaped extending in the left-right direction.

[0068] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0069] In addition, the terms "first" and "second" are only used for distinction and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0070] In the present invention, unless otherwise clearly specified or limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed broadly. For example, it may be a fixed connection, a detachable connection, or integral; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication between two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0072] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0073] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present invention.

Claims

1. A sampling rod, characterized in that, include: A stick body (1), wherein the stick body (1) is provided with a paper insertion slot (11); A paper clamping device (2), the paper clamping device (2) being arranged in the stick body (1) and being used for clamping and releasing the test paper (8) inserted into the paper insertion slot (11); A paper carrier (3) is provided on the rod body (1) and is arranged side by side with the paper insertion slot (11); the paper carrier (3) can be retracted and extended relative to the rod body (1), and the outer end of the paper carrier (3) is always located outside the rod body (1).

2. The sampling rod according to claim 1, wherein The rod body (1) is provided with a mounting cavity (12), the mounting cavity (12) is communicated with the paper insertion slot (11), and the paper clamping device (2) is arranged in the mounting cavity (12) and is arranged opposite to or side by side with the paper insertion slot (11).

3. The sampling rod according to claim 2, wherein The mounting cavity (12) includes a mounting side surface (121) and a paper clamping side surface (122) that are arranged opposite to each other. The paper clamping device (2) includes a lever (21) and a first elastic member (22). The lever (21) has a pressing end (211) and a paper clamping end (212) that are arranged opposite to each other. The first elastic member (22) is provided between the paper clamping end (212) and the mounting side surface (121). The first elastic member (22) is used to drive the paper clamping end (212) to move toward the paper clamping side surface (122), and the pressing end (211) is used to drive the paper clamping end (212) to move away from the paper clamping side surface (122).

4. The sampling rod according to claim 3, characterized in that, The paper clamping side surface (122) is provided with a fulcrum protrusion (123), and the fulcrum protrusion (123) abuts against the middle portion of the lever (21).

5. The sampling rod according to claim 3, characterized in that, The paper clamping side surface (122) is located between the installation side surface (121) and the paper carrier (3), and the paper insertion slot (11) is flush with the paper clamping side surface (122).

6. The sampling rod according to claim 3, characterized in that The paper clamping side surface (122) is provided with a paper clamping groove (124), and the paper clamping end (212) is provided with a paper clamping boss (213). The paper clamping end (212) drives the paper clamping boss (213) to enter and exit the paper clamping groove (124).

7. The sampling rod according to claim 3, wherein The stick further comprises a button (4), which is arranged on the stick body (1) and abuts against the pressing end (211), and is used to press the pressing end (211) to drive the paper clamping end (212) to move away from the paper clamping side surface (122).

8. The sampling rod according to claim 1, characterized in that, The rod body (1) further comprises a second elastic member (5), the rod body (1) is provided with a telescopic cavity (13), the paper carrier (3) is provided in the telescopic cavity (13) and can be retracted and extended relative to the telescopic cavity (13), and the second elastic member (5) is provided in the telescopic cavity (13) and is connected to the paper carrier (3) to drive the paper carrier (3) to extend.

9. The sampling rod according to claim 1, wherein, It also includes an anti-slip part (6), which is arranged at the outer end of the paper carrier (3) and at one end of the paper carrier (3) facing the paper insertion slot (11).

10. The sampling rod according to claim 1, characterized in that, It also includes a buffer member (7), which is arranged at the outer end of the paper carrier (3) and at one end of the extending direction of the paper carrier (3).

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