CN218995405U

CN218995405U - Test tube righting structure

Info

Publication number: CN218995405U
Application number: CN202223319934.0U
Authority: CN
Inventors: 刘远平; 张进
Original assignee: Jingjiang Diagnostic Technology Jiangsu Co ltd
Current assignee: Jingjiang Diagnostic Technology Jiangsu Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-05-09
Anticipated expiration: 2032-12-09

Abstract

The utility model provides a test tube righting structure which comprises a fixing part, wherein one end of the fixing part is connected with a baffle plate of a test tube rack; the centralizing part is connected with the other end of the fixing part, and an included angle alpha of the connecting part of the centralizing part and the fixing part is an obtuse angle; the righting part stretches into the test tube rack and is abutted with the test tube in the test tube rack for righting the test tube. The test tube righting structure provided by the utility model only comprises the spring piece with high elasticity and low elasticity, is simple in structure and low in cost, can effectively achieve the purpose of righting the test tube, does not generate excessive transverse thrust on the test tube rack and the test tube, and can ensure the stable and smooth operation of the transverse movement of the test tube rack.

Description

Test tube righting structure

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a test tube righting structure.

Background

With the development of diagnostic techniques and the increase of the number of samples tested, the autosampling of blood analyzers has become a trend and mainstream. Before the automatic sample injection module punctures the test tube on the test tube rack, the test tube generally needs to be subjected to rotary code scanning, uplink clamping, uniform mixing and back-put actions after uniform mixing, and more actions mean that the test tube on the test tube rack is in a free state with larger gaps. However, a large gap between the test tubes means that the test tubes are randomly inclined on the rack. When the sampling needle is used for puncturing and sampling, the area of the test tube cap for puncturing is generally not larger than 6mm in diameter, so that a contradiction exists between the inclined test tube and the higher positioning requirement.

In order to solve the above problems, there are two schemes in the prior art: firstly, a clamping ring is additionally arranged on a test tube rack to control a gap so as to reduce the swaying gap of the test tube, but the tilting amplitude of the test tube can be reduced only, and the tilting problem of the test tube cannot be avoided; secondly, use righting device in puncture position, for example the chinese patent of patent publication No. CN113702654a discloses an autosampler and test tube righting mechanism for righting the test tube, and this test tube righting mechanism has adopted roller formula direction contact portion and buffer spring to right the test tube, and the structure is complicated, manufacturing cost is high, and this test tube righting mechanism can produce great transverse thrust to the test tube, is unfavorable for the steady operation of test-tube rack.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a test tube righting structure which is simple in structure and low in production cost, and can not interfere with the stable operation of a test tube rack under the transverse thrust of a test tube.

To achieve the above and other objects, the present utility model is achieved by comprising the following technical solutions: the utility model provides a test tube righting structure, which is characterized by comprising the following components: one end of the fixing part is connected with the test tube rack baffle; the centralizing part is connected with the other end of the fixing part, and an included angle alpha of the connecting part of the centralizing part and the fixing part is an obtuse angle; the righting part stretches into the test tube rack and is abutted with the test tube in the test tube rack for righting the test tube.

In an embodiment, the righting part is an axisymmetric structure and comprises a first guide surface, a righting surface and a second guide surface which are sequentially connected, wherein the first guide surface is connected with the other end of the fixed part, an included angle alpha between the first guide surface and the other end of the fixed part is an obtuse angle, an included angle beta between the second guide surface and the other end of the fixed part is an acute angle, and the included angle alpha is complementary with the included angle beta.

In an embodiment, the righting part is M-shaped, and the righting surface is a concave cambered surface, and the righting surface is adapted to the cambered surface of the outer wall of the test tube.

In an embodiment, the arc length of the righting surface is smaller than the arc length of the test tube position opening of the test tube rack.

In an embodiment, the righting part is V-shaped, and the righting surface is a plane or a convex curved surface, and the righting surface and the cambered surface of the outer wall of the test tube form line contact.

In one embodiment, the angle between the first guide surface and the second guide surface is 90 degrees.

In one embodiment, the first and second guide surfaces are planar.

In an embodiment, at least two screw holes are formed in the fixing portion, and the fixing portion is connected to the test tube rack baffle through screws.

In one embodiment, the tube-centering structure is made of a high-elasticity low-elasticity material.

In one embodiment, the fixing portion is integrally formed with the righting portion.

The test tube righting structure provided by the utility model only comprises the spring piece with high elasticity and low elasticity, is simple in structure and low in cost, can effectively achieve the purpose of righting the test tube, does not generate excessive transverse thrust on the test tube rack and the test tube, and can ensure the stable and smooth operation of the transverse movement of the test tube rack.

Drawings

Fig. 1 shows a schematic view of a first embodiment of the utility model for righting a test tube.

Fig. 2 shows an enlarged view at a in fig. 1.

Fig. 3A is a schematic perspective view of a first embodiment of the present utility model.

Fig. 3B is a schematic top view of the first embodiment of the present utility model.

Fig. 4A is a schematic perspective view of a second embodiment of the present utility model.

Fig. 4B is a schematic top view of a second embodiment of the present utility model.

Fig. 5 shows a schematic view of a second embodiment of the utility model for righting a test tube.

Detailed Description

Please refer to fig. 1 to 5. Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. It should be understood that the described embodiments are merely some, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present utility model. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, related operations of the present utility model have not been shown or described in the specification in order to avoid obscuring the core portions of the present utility model, and may be unnecessary to persons skilled in the art from a detailed description of the related operations, which may be presented in the description and general knowledge of one skilled in the art.

In addition, for the sake of more clear description, the terms "front", "rear", "left", "right", "upper", "lower", etc. herein indicate an orientation or positional relationship set forth based on fig. 1, and are merely for convenience of clearly describing the present utility model, and do not indicate or imply that the structures or components referred to must have a specific orientation, be configured in a specific orientation, and thus should not be construed as limiting the present utility model. The reference numerals used for the components in this specification, such as "first," "second," etc., are used for distinguishing between the described objects and not necessarily for describing a sequential or chronological order. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated.

As shown in fig. 1 and 5, the utility model provides a test tube righting structure 100 which is mainly applied to a full-automatic blood cell analyzer and aims to solve the problem that a test tube 3 is easy to incline on a test tube rack 2 during puncture. The test tube righting structure 100 is mounted on a test tube rack baffle 1, and the test tube rack baffle 1 is used for guiding the automatic movement of the test tube rack 2. A plurality of test tube positions are arranged on the test tube rack 2 and used for placing the test tubes 3.

As shown in fig. 2 to 4, the tube righting structure 100 is a spring piece made of a material with high elasticity and low elasticity, such as spring steel, rubber, etc. The test tube righting structure 100 includes a fixing portion 110 and a righting portion 120 connected in sequence. The fixing portion 110 and the righting portion 120 are integrally formed. Referring to fig. 1 and 5, one end of the fixing portion 110 is connected to the fixing bracket 11 of the rack baffle 1, so that the tube righting structure 100 is fixed on the rack baffle 1. The righting part 120 is used for righting the test tube 3, the righting part 120 is connected with the other end of the fixing part 110, and an included angle alpha of the connecting part of the fixing part 110 and the righting part 120 is an obtuse angle, so that when the other end of the fixing part 110 is approximately parallel to the test tube rack baffle 1, the righting part 120 can extend into the test tube rack 2 and is in butt joint with the test tube 3.

As shown in fig. 3A and 3B, in the first embodiment, the centering portion 120 has an axisymmetric structure, and has a cross-sectional shape similar to an M shape. The righting portion 120 includes a first guide surface 121, a righting surface 122, and a second guide surface 123 that are sequentially connected, the first guide surface 121 may be a plane, the first guide surface 121 is connected with the other end of the fixing portion 110, and an included angle α between the first guide surface 121 and the other end of the fixing portion 110 is an obtuse angle. The second guiding surface 123 may be a plane, and an included angle β between the second guiding surface 123 and the other end of the fixing portion 110 is an acute angle, and the included angle α is complementary to the included angle β. The righting surface 122 is located between the first guide surface 121 and the second guide surface 122, the righting surface 122 is a concave arc surface facing the test tube 3, and the righting surface 122 is matched with an outer wall arc surface of the test tube 3, so that limiting righting of the test tube 3 is achieved, and the test tube 3 is prevented from tilting forwards and backwards and tilting leftwards and rightwards. Referring to fig. 2, the arc length of the supporting surface 122 is smaller than the arc length of the test tube position opening 22 of the test tube rack 2, and the concave arc surface design of the supporting surface 122 can realize complete limit constraint on the test tube 3.

As shown in fig. 4A and 4B, in the second embodiment, the centering portion 120 has an axisymmetric structure, and has a V-shaped cross-section. The righting portion 120 includes a first guide surface 121, a righting surface 122, and a second guide surface 123 that are sequentially connected, the first guide surface 121 may be a plane, the first guide surface 121 is connected with the other end of the fixing portion 110, and an included angle α between the first guide surface 121 and the other end of the fixing portion 110 is an obtuse angle. The second guiding surface 123 may be a plane, and an included angle β between the second guiding surface 123 and the other end of the fixing portion 110 is an acute angle, and the included angle α is complementary to the included angle β. The righting segment 122 is positioned between the first guide segment 121 and the second guide segment 122. The righting surface 122 is a convex curved surface facing the test tube 3, and the width of the righting surface 122 may be small, and is mainly used for switching the first guide surface 121 and the second guide surface 122. Although not shown in the drawings, the righting surface 122 may be a flat surface, even if the righting surface 122 is in line contact with the outer wall arc surface of the test tube 3. Please refer to fig. 5, because the arc length of the tube position opening 22 of the test tube rack 2 is generally designed to be smaller, the tube 3 is mainly inclined in the test tube rack 2 to be inclined back and forth (e.g. the left test tube 3 in the enlarged view), when the tube 3 is inclined back and forth, the end of the test tube 3, which is in contact with the righting surface 122 first, will apply elastic interference force to the righting surface 122, the righting surface 122 will rebound with its own high elasticity, so that the test tube 3 is vertically straightened, and the low elasticity of the test tube 3 will not damage the test tube 3.

Further, in some particular embodiments, the angle between the first guide surface 121 and the second guide surface 122 may be 90 degrees.

Referring to fig. 1-5, when the test tube rack 2 moves laterally (moves left and right) along the test tube rack baffle 1, the first guide surface 121 and the second guide surface 122 of the centering portion 120 extending into the test tube rack 2 will first contact with the outer edge 21 of the test tube rack 2, and undergo elastic deformation, so that the centering surface 122 is pushed out of the outer edge 21, and at this time, the centering surface 122 can effectively avoid damage caused by collision with the outer edge 21, and meanwhile, the lateral movement of the test tube rack 2 can be ensured to operate smoothly. When the rack 2 moves to the next test tube 3, the centering portion 120 causes the centering surface 122 to compress the test tube 3 again due to the high elasticity.

Referring to fig. 3A and fig. 4A, in some specific embodiments, at least two screw holes 111 may be formed at one end of the fixing portion 110, and the fixing portion 110 may be connected to the rack baffle 1 by screws. Although the cross-sectional shape of the fixing portion 110 shown in fig. 3B and 4B is a "spoon shape", this is not necessarily required in order to match the shape of the fixing bracket 11, and the cross-sectional shape of the fixing portion 110 may be a shape actually required such as a "straight line shape".

In summary, the test tube righting structure 100 provided by the utility model only comprises the spring piece with high elasticity and low elasticity, has a simple structure and low cost, can effectively achieve the purpose of righting the test tube 3, does not generate excessive transverse thrust on the test tube rack 2 and the test tube 3, and can ensure stable and smooth operation of transverse movement of the test tube rack 2.

The utility model effectively overcomes various defects in the prior art and has high industrial utilization value. The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A test tube righting structure, comprising:

one end of the fixing part is connected with the test tube rack baffle;

the centralizing part is connected with the other end of the fixing part, and an included angle alpha of the connecting part of the centralizing part and the fixing part is an obtuse angle; the righting part stretches into the test tube rack and is abutted with the test tube in the test tube rack and used for righting the test tube.

2. The test tube righting structure according to claim 1, wherein the righting part is of an axisymmetric structure and comprises a first guide surface, a righting surface and a second guide surface which are sequentially connected, the first guide surface is connected with the other end of the fixing part, an included angle alpha between the first guide surface and the other end of the fixing part is an obtuse angle, an included angle beta between the second guide surface and the other end of the fixing part is an acute angle, and the included angle alpha is complementary to the included angle beta.

3. The test tube righting structure of claim 2, wherein the righting portion is M-shaped and the righting surface is a concave cambered surface, the righting surface being adapted to the cambered surface of the outer wall of the test tube.

4. The tube straightening structure according to claim 3, characterized in that the arc length of the straightening surface is smaller than the arc length of the tube position opening of the tube rack.

5. The tube righting structure of claim 2, wherein the righting portion is V-shaped and the righting surface is a planar or convex curved surface, the righting surface being in line contact with an outer wall arcuate surface of the tube.

6. The cuvette centering structure of claim 5, wherein the angle between the first and second guide surfaces is 90 degrees.

7. The cuvette centralizing structure of claim 2, wherein the first guide surface and the second guide surface are planar.

8. The test tube righting structure according to claim 1, wherein the fixing portion is provided with at least two screw holes, and the fixing portion is connected to the test tube rack baffle plate through screws.

9. The cuvette handling structure according to claim 1, wherein the cuvette handling structure is made of a high elasticity, low elasticity material.

10. The tube righting structure of claim 9, wherein the securing portion is integrally formed with the righting portion.