A tube cap rebound measuring device for a sampling tube

Abstract

The application discloses a device for measuring the rebound amount of a tube cover of a sampling tube, which comprises an upper sleeving part capable of being detachably sleeved and fixed on the tube cover and a lower sleeving part capable of being detachably sleeved and fixed on the tube body, the upper sleeving part and the lower sleeving part are arranged in a corresponding manner, one of the upper sleeving part and the lower sleeving part is fixedly provided with a first measuring reference part on a side edge, and the other is fixedly provided with a second measuring reference part on a side edge, the first measuring reference part and the second measuring reference part are arranged in a left-right opposite manner in a horizontal direction, and the upper sleeving part can make the first measuring reference part and the second measuring reference part move away from each other when the upper sleeving part rotates synchronously with the tube cover. The application is beneficial to guaranteeing that the measurement of the rebound amount of the tube cover is simple and accurate, and improving the measurement efficiency of the rebound amount of the tube cover of the sampling tube.

Description

Technical Field

[0001] This invention relates to the field of sampling tube testing device technology, and more specifically to a device for measuring the rebound amount of the tube cap of a sampling tube. Background Technology

[0002] In the prior art, the cap and body of a sampling tube are sealed together by a threaded connection. However, if the sealing is not good when the sampling tube is used for virus sampling, leakage may occur during transportation and transfer after sampling, posing a safety hazard of virus leakage. Therefore, in the production process of sampling tubes, it is usually necessary to tighten the cap of the sampling tube and place it in a certain test environment for testing. After the test time is up, the rebound amount (rebound rotation angle) of the cap relative to the body is measured. However, since the rebound amount of the sampling tube cap is very small, the existing measurement method is difficult to ensure that the measurement of the cap rebound amount is both convenient and accurate. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a device for measuring the rebound amount of a sampling tube cap, which ensures that the measurement of the cap rebound amount is both convenient and accurate.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0005] A device for measuring the rebound amount of a sampling tube cap includes an upper sleeve portion that can be detachably fitted and fixed to a tube cap and a lower sleeve portion that can be detachably fitted and fixed to a tube body. The upper sleeve portion and the lower sleeve portion are arranged vertically opposite each other. A first measuring reference portion is fixedly provided on the side of one of the upper sleeve portion and the other sleeve portion, and a second measuring reference portion is fixedly provided on the side of the other sleeve portion. The first measuring reference portion and the second measuring reference portion are configured to be arranged horizontally opposite each other, and the upper sleeve portion can move the first measuring reference portion and the second measuring reference portion away from each other when rotating synchronously with the tube cap.

[0006] Furthermore, the first measuring reference part is disposed on the side of the upper sleeve part, and the second measuring reference part is disposed on the side of the lower sleeve part. The first measuring reference part extends downward and forms a measuring reference plane on one side opposite to the second measuring reference part, which corresponds to the left and right sides of the second measuring reference part. A measuring reference protrusion is disposed on the second measuring reference part, and the measuring reference protrusion is configured to form a point contact abutment with the measuring reference plane of the first measuring reference part.

[0007] Furthermore, a sloped structure is formed on the inner half of the measuring reference protrusion facing the center of the lower sleeve portion, and a hemispherical structure is formed on the outer half of the measuring reference protrusion away from the center of the lower sleeve portion. The protruding apex of the hemispherical structure is configured to form a point contact abutment with the measuring reference plane of the first measuring reference portion.

[0008] Furthermore, a measuring reference rod is connected to the second measuring reference part, and a measuring reference protrusion is integrally formed on the end of the measuring reference rod facing the measuring reference plane.

[0009] Furthermore, a socket is provided on the second measuring reference part, and the measuring reference rod is fastened to the socket of the second measuring reference part by interference fit.

[0010] Furthermore, the upper sleeve has an annular structure, and several first locking holes for locking set screws are provided on the circumferential surface of the upper sleeve. The upper sleeve is locked to the tube cap by the set screws locked in through the first locking holes. The lower sleeve has an annular structure, and several second locking holes for locking set screws are provided on the circumferential surface of the lower sleeve. The lower sleeve is locked to the tube body by the set screws locked in through the second locking holes.

[0011] Furthermore, an anti-rotation locking structure is provided between the upper sleeve part and the lower sleeve part to facilitate locking the upper sleeve part and the lower sleeve part together.

[0012] Furthermore, the upper sleeve part has two symmetrically arranged upper ear plates on its side, and the lower sleeve part has two symmetrically arranged lower ear plates on its side. The two upper ear plates are respectively arranged in relation to the two lower ear plates, and the upper ear plates have waist-shaped holes, and the lower ear plates have screw holes. The upper sleeve part and the lower sleeve part are configured to be fastened together by locking screws that pass through the waist-shaped holes and are screwed into the corresponding screw holes.

[0013] Furthermore, the top of the lower sleeve is provided with an upwardly protruding annular protrusion, and the bottom of the upper sleeve is formed with an annular groove that matches the annular protrusion. The annular groove and the annular protrusion are fitted together in an adaptive nesting manner.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] In the sampling tube cap rebound measurement device of the present invention, the lower sleeve part can be fixed to the tube body first, and then the tube cap can be screwed onto the tube body. Next, the upper sleeve part is fitted onto the tube cap, and then the upper sleeve part is rotated so that the first measuring reference part of the upper sleeve part and the second measuring reference part of the lower sleeve part are aligned and pressed together. Then, the upper sleeve part is fixed to the tube cap so that the upper sleeve part can rotate synchronously with the tube cap. After that, it is tested for a certain period of time under certain test conditions. After the test is completed, the rebounding tube cap will drive the upper sleeve part to rotate relative to the lower sleeve part in the direction of loosening the tube cap. This causes the upper sleeve to move the first measuring reference part away from the second measuring reference part of the lower sleeve in the horizontal direction. Then, by measuring and calculating the change in the angle formed after the separation of the first and second measuring reference parts compared to the initial state, the magnitude of the cap rebound is obtained. The measurement process is simple and quick, converting the cap rotation angle, which cannot be directly and accurately measured, into the angle formed after the separation of the first and second measuring reference parts, which is easy to measure or calculate. This helps to ensure that the measurement is both simple and accurate, and improves the efficiency of cap rebound measurement of the sampling tube. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the measuring reference protrusion and the measuring reference surface in the measuring device of this embodiment of the invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the measuring reference protrusion and the measuring reference surface in the measuring device of this invention, taken from another angle.

[0018] Figure 3 This is a top view of the structure of the measuring reference protrusion and the measuring reference surface in the measuring device of this embodiment of the invention.

[0019] Figure 4 This is an exploded three-dimensional structural diagram of the measuring device according to an embodiment of the present invention.

[0020] Figure 5 This is an exploded three-dimensional structural diagram of the measuring device according to another embodiment of the present invention.

[0021] Figure 6 This is a three-dimensional structural diagram of the measuring reference protrusion and the measuring reference surface in the measuring device according to an embodiment of the present invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the measuring reference protrusion and the measuring reference surface in the measuring device according to an embodiment of the present invention, after being separated from each other.

[0023] Figure 8This is a top view of the structure of the measuring reference protrusion and the measuring reference surface in the measuring device of this embodiment of the invention after separation.

[0024] Figure 9 This is a three-dimensional structural diagram of the measurement reference protrusion and the measurement reference rod according to an embodiment of the present invention.

[0025] Figure 10 This is a three-dimensional structural diagram of the measuring reference protrusion and the measuring reference rod from another angle, according to an embodiment of the present invention.

[0026] Figure 11 yes Figure 8 A magnified view of section A in the image.

[0027] Label Explanation:

[0028] 1. Upper sleeve part; 2. Lower sleeve part; 3. First measuring reference part; 4. Second measuring reference part; 5. Measuring reference protrusion; 6. Measuring reference rod; 11. First locking hole; 12. Upper ear plate; 13. Annular groove; 21. Second locking hole; 22. Lower ear plate; 23. Annular protrusion; 31. Measuring reference plane; 51. Inclined structure; 52. Hemispherical structure; 121. Waist-shaped hole; 221. Screw hole. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Please refer to the appendix. Figure 1 To be continued Figure 11An embodiment of the present invention provides a tube cap rebound measurement device, including an upper sleeve portion 1 that can be detachably fitted and fixed on the tube cap and a lower sleeve portion 2 that can be detachably fitted and fixed on the tube body. The upper sleeve portion 1 and the lower sleeve portion 2 are arranged vertically correspondingly. A first measuring reference portion 3 is fixedly provided on the side of one of the upper sleeve portion 1 and the lower sleeve portion 2, and a second measuring reference portion 4 is fixedly provided on the side of the other sleeve portion. The first measuring reference portion 3 and the second measuring reference portion 4 are configured to be arranged horizontally opposite each other. When the upper sleeve portion 1 rotates synchronously with the tube cap, the first measuring reference portion 3 and the second measuring reference portion 4 can be moved away from each other. It is understood that, in use, the pipe cap rebound measuring device of this embodiment can first fix the lower sleeve 2 onto the pipe body, then tighten the pipe cap onto the pipe body, then fit the upper sleeve 1 onto the pipe cap, then rotate the upper sleeve and align the first measuring reference part 3 of the upper sleeve 1 and the second measuring reference part 4 of the lower sleeve 2 together, then fix the upper sleeve 1 onto the pipe cap so that the upper sleeve 1 can rotate synchronously with the pipe cap. Then, it is tested for a certain period of time under a certain test environment (such as vibration and temperature conditions simulating transportation). After the test is completed, the rebounding pipe cap will drive the upper sleeve 1 relative to the lower sleeve 1 towards the pipe cap. The tube cap rotates in the loosening direction, causing the upper sleeve 1 to move the first measuring reference 3 away from the second measuring reference 4 of the lower sleeve 2 in the horizontal direction. Then, by measuring and calculating the change in the included angle formed after the separation of the first measuring reference 3 and the second measuring reference 4 compared to the initial state, the size of the tube cap rebound amount (rotation angle) is obtained. The measurement process is simple and quick, converting the tube cap rotation angle, which cannot be directly and accurately measured, into the size of the included angle after the separation of the first measuring reference 3 and the second measuring reference 4, which is easy to measure or calculate. This helps to ensure that the measurement is both simple and accurate, and improves the measurement efficiency of the tube cap rebound amount of the sampling tube.

[0032] Please refer to the appendix. Figure 3 Appendix Figure 8In one preferred embodiment, the first measuring reference part 3 is disposed on the side of the upper sleeve part 1, and the second measuring reference part 4 is disposed on the side of the lower sleeve part 2. The first measuring reference part 3 extends downward and forms a measuring reference plane 31 on one side opposite to the second measuring reference part 4, corresponding to the left and right sides of the second measuring reference part 4. A measuring reference protrusion 5 is provided on the second measuring reference part 4, and the measuring reference protrusion 5 is configured to form a point contact abutment with the measuring reference plane 31 of the first measuring reference part 3. In this embodiment, preferably, a slope structure 51 is formed on the inner half of the measuring reference protrusion 5 facing the center of the lower sleeve part 2, and a hemispherical structure 52 is formed on the outer half of the measuring reference protrusion 5 away from the center of the lower sleeve part 2. The protruding apex of the hemispherical structure 52 is configured to form a point contact abutment with the measuring reference plane 31 of the first measuring reference part 3. It is understood that, as shown in the attached... Figure 3 As shown, initially, the protruding apex of the measuring reference protrusion 5 is in contact with the measuring reference plane 31 of the first measuring reference part 3. After the sampling tube is tested under certain conditions, as shown in the attached figure... Figure 11 As shown, the rebound amount of the pipe cap can be characterized by the angle α formed by the line connecting the protruding vertex of the hemispherical structure 52 and the center of the upper sleeve 1 with the measuring reference plane 31. This angle α can be obtained by measuring the distance L between the protruding vertex of the measuring reference protrusion 5 and the measuring reference plane 31, and then by corresponding calculations. Since the distance L is usually very small, generally not exceeding 2 mm, and sometimes even less than 1 mm, in one preferred application scenario, the distance L can be accurately measured using a suitable plug gauge or vernier caliper. Furthermore, in this embodiment, since a measurement reference plane 31 is formed on the first measurement reference part 3, and a slope structure 51 is formed on the inner half of the measurement reference protrusion 5 facing the center of the lower sleeve part 2, and a hemispherical structure 52 is formed on the outer half of the measurement reference protrusion 5 away from the center of the lower sleeve part 2, when a suitable plug gauge is inserted, one side of the plug gauge flatly presses against the measurement reference plane 31, and the other side forms a point contact abutment with the protruding apex of the measurement reference protrusion 5, making its measurement more accurate.

[0033] Please refer to the appendix. Figure 1 To be continued Figure 3 In one preferred embodiment, a measuring reference rod 6 is connected to the second measuring reference part 4, and a measuring reference protrusion 5 is integrally formed on the end of the measuring reference rod 6 facing the measuring reference plane 31. In this embodiment, preferably, an insertion hole is provided on the second measuring reference part 4, and the measuring reference rod 6 is fastened to the insertion hole of the second measuring reference part 4 by interference fit.

[0034] Please refer to the appendix. Figure 1 Appendix Figure 4In one preferred embodiment, the upper sleeve portion 1 has an annular structure, and a plurality of first locking holes 11 for locking set screws are provided on the circumferential surface of the upper sleeve portion 1. The upper sleeve portion 1 is locked to the tube cap by the set screws locked in through the first locking holes 11. The lower sleeve portion 2 has an annular structure, and a plurality of second locking holes 21 for locking set screws are provided on the circumferential surface of the lower sleeve portion 2. The lower sleeve portion 2 is locked to the tube body by the set screws locked in through the second locking holes 21.

[0035] Please refer to the appendix. Figure 1 To be continued Figure 5 In one preferred embodiment, an anti-rotation locking structure is provided between the upper sleeve portion 1 and the lower sleeve portion 2 to facilitate locking the upper sleeve portion 1 and the lower sleeve portion 2 together. In this embodiment, preferably, two symmetrically arranged upper ear plates 12 are provided on the side of the upper sleeve portion 1, and two symmetrically arranged lower ear plates 22 are provided on the side of the lower sleeve portion 2. The two upper ear plates 12 are respectively arranged vertically and vertically corresponding to the two lower ear plates 22. The upper ear plates 12 are provided with waist-shaped holes 121, and the lower ear plates 22 are provided with screw holes 221. The upper sleeve portion 1 and the lower sleeve portion 2 are configured to be fastened and locked together by locking screws that pass through the waist-shaped holes 121 and are screwed into the corresponding screw holes 221. It is understood that in this embodiment, by setting an anti-rotation locking structure, after the sampling tube is tested, the upper sleeve 1 and the lower sleeve 2 can be locked together by tightening the locking screw, thereby fixing the included angle α. Then, each locking pin can be removed, and the upper sleeve 1 (or together with the tube cap) and the lower sleeve 2 can be removed. Then, the accurate value of the tiny distance L can be accurately measured by the projection measurement method, and the rebound amount of the tube cap can be calculated.

[0036] Please refer to the appendix. Figure 4 Appendix Figure 5 In one preferred embodiment, the lower sleeve portion 2 has an upwardly protruding annular protrusion 23 at its top, and the upper sleeve portion 1 has an annular groove 13 at its bottom that matches the annular protrusion 23. The annular groove 13 and the annular protrusion 23 are nested together. It is understood that by providing the annular groove 13 and the annular protrusion 23 that can nest together on the upper sleeve portion 1 and the lower sleeve portion 2 respectively, the upper sleeve portion 1 and the lower sleeve portion 2 can rotate more stably together, thereby improving the rotational smoothness of the upper sleeve portion 2 relative to the lower sleeve portion 2 and thus improving the accuracy of subsequent measurements. However, those skilled in the art should understand that in other embodiments, the positions of the annular groove 13 and the annular protrusion 23 can also be interchanged, and are not limited to the specific implementation disclosed in this embodiment. Those skilled in the art can make specific settings according to specific circumstances.

[0037] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features therein. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

Claims

1. A device for measuring the rebound amount of a sampling tube cap, characterized in that: It includes an upper sleeve part (1) that can be detachably fitted and fixed on the pipe cover and a lower sleeve part (2) that can be detachably fitted and fixed on the pipe body. The upper sleeve part (1) and the lower sleeve part (2) are arranged vertically and vertically respectively. A first measuring reference part (3) is fixedly provided on the side of one of the upper sleeve part (1) and the lower sleeve part (2), and a second measuring reference part (4) is fixedly provided on the side of the other sleeve part. The first measuring reference part (3) and the second measuring reference part (4) are configured to be arranged horizontally and vertically opposite each other. When the upper sleeve part (1) rotates synchronously with the pipe cover, the first measuring reference part (3) and the second measuring reference part (4) can move away from each other. The first measuring reference part (3) is provided on the side of the upper sleeve part (1), and the second measuring reference part (4) is provided on the side of the lower sleeve part (2). The first measuring reference part (3) extends downward and forms a measuring reference plane (31) on one side opposite to the second measuring reference part (4), which corresponds to the left and right sides of the second measuring reference part (4). A measuring reference protrusion (5) is provided on the second measuring reference part (4), and the measuring reference protrusion (5) is configured to form a point contact abutment with the measuring reference plane (31) of the first measuring reference part (3). The inner half of the measuring reference protrusion (5) facing the center of the lower sleeve part (2) has a slope structure (51), and the outer half of the measuring reference protrusion (5) away from the center of the lower sleeve part (2) has a hemispherical structure (52). The protruding vertex of the hemispherical structure (52) is configured to form a point contact abutment with the measuring reference plane (31) of the first measuring reference part (3). The rebound of the cap is characterized by the angle α formed by the line connecting the protruding vertex of the hemispherical structure (52) and the center of the upper sleeve (1) with the measuring reference plane (31). The angle α is obtained by measuring the distance L between the protruding vertex of the measuring reference protrusion (5) and the measuring reference plane (31). The distance L is accurately measured using a plug gauge or vernier caliper, and then the angle α is obtained through corresponding calculations.

2. The sampling tube cap rebound measurement device according to claim 1, characterized in that: A measuring reference rod (6) is connected to the second measuring reference part (4), and a measuring reference protrusion (5) is integrally formed on one end of the measuring reference rod (6) facing the measuring reference plane (31).

3. The sampling tube cap rebound measurement device according to claim 2, characterized in that: A socket is provided on the second measuring reference part (4), and the measuring reference rod (6) is fastened to the socket of the second measuring reference part (4) by interference fit.

4. The device for measuring the rebound amount of the sampling tube cap according to claim 1, characterized in that: The upper sleeve (1) has a ring-shaped structure, and a number of first locking holes (11) for locking set screws are provided on the circumferential surface of the upper sleeve (1). The upper sleeve (1) is locked to the tube cover by the set screws locked in through the first locking holes (11). The lower sleeve (2) has a ring-shaped structure, and a number of second locking holes (21) for locking set screws are provided on the circumferential surface of the lower sleeve (2). The lower sleeve (2) is locked to the tube body by the set screws locked in through the second locking holes (21).

5. The device for measuring the rebound amount of the sampling tube cap according to any one of claims 1 to 4, characterized in that: An anti-rotation locking structure is provided between the upper sleeve part (1) and the lower sleeve part (2) to facilitate locking the upper sleeve part (1) and the lower sleeve part (2) together.

6. The sampling tube cap rebound measurement device according to claim 5, characterized in that: The upper sleeve part (1) has two symmetrically arranged upper ear plates (12) on its side, and the lower sleeve part (2) has two symmetrically arranged lower ear plates (22) on its side. The two upper ear plates (12) are respectively arranged vertically and vertically corresponding to the two lower ear plates (22). The upper ear plate (12) has a waist-shaped hole (121) and the lower ear plate (22) has a screw hole (221). The upper sleeve part (1) and the lower sleeve part (2) are configured to be fastened together by a locking screw that passes through the waist-shaped hole (121) and is screwed into the corresponding screw hole (221).

7. The device for measuring the rebound amount of the sampling tube cap according to any one of claims 1 to 4, characterized in that: The lower sleeve part (2) has an upwardly protruding annular protrusion (23) at the top, and the upper sleeve part (1) has an annular groove (13) at the bottom that matches the annular protrusion (23). The annular groove (13) and the annular protrusion (23) fit together in a nested manner.

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