Optical fiber mounting structure and gene amplification instrument

Abstract

The utility model discloses an optical fiber mounting structure and a gene amplification instrument, which comprise at least two rows of test tube seats, optical fiber insertion holes and optical fiber insertion holes, the first end of the optical fiber is linearly arranged in the optical fiber jack or tends to be linearly arranged in the optical fiber jack; the surfaces of at least one row of the test tube seats are provided with the abdicating grooves for accommodating the optical fibers, so that the optical fibers are not bent, fiber cores in the optical fibers are not broken, and the service life of the optical fibers is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of biochemical test instruments, in particular to an optical fiber installation structure and a gene amplification instrument. Background Art

[0002] The fluorescence detection system of the existing quantitative gene amplification instrument is to irradiate the excitation light into the sample tube through the optical fiber from the side of the test tube holder, and then collect the fluorescence excited instantly in the sample tube from the side of the test tube holder to realize the detection. There are some problems in the prior art. First, due to the order of arrangement of the test tube holders on the module base, the optical fiber cannot be directly connected to the test tube holder. The optical fiber needs to be bent before being connected to the test tube holder. If the optical fiber is bent too much, some light will not pass normally, and the optical power will decrease, resulting in the quality of the received optical signal deteriorating, and even easy to break. Second, most of the prior art uses glue to install the optical fiber on the filter wheel, but the glue fixing the optical fiber easily causes it to attach to the end of the optical fiber, affecting the transmittance. In addition, the optical fiber is difficult to disassemble or even impossible to disassemble. Third, the module heating film in the prior art has only one set of heating resistor wires, which can simultaneously compensate the temperature of the test tube holders around the outer circle of the module base until it is close to the temperature in the middle hole, but one or more of the four corners often have low or high temperatures, and the temperature uniformity of the module base is poor. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an optical fiber installation structure and a gene amplification instrument, which can ensure that the optical fiber is not bent, thereby well ensuring that the fiber core in the optical fiber is not broken, greatly extending the service life of the optical fiber.

[0004] The utility model adopts the following technical solutions:

[0005] An optical fiber installation structure comprises: at least two rows of test tube holders, each having an optical fiber jack; an optical fiber, the first end of which is arranged in a linear or linear manner in the optical fiber jack; at least one row of test tube holders is provided with a recess for accommodating the optical fiber, the optical fiber can be inserted into the optical fiber jack along the recess, and the optical fiber can be ensured not to bend, thereby well ensuring that the fiber core in the optical fiber is not broken, thereby greatly extending the service life of the optical fiber.

[0006] Preferably, the angle between the optical fiber jack and the horizontal direction is 70-75 degrees.

[0007] Preferably, the angle between the optical fiber jack and the horizontal direction is 71.5-72.5 degrees.

[0008] Preferably, there is a certain distance between the clearance groove and the test tube mounting groove of the test tube holder to prevent the clearance groove from penetrating the test tube mounting groove and to prevent the light source in the test tube mounting groove from emitting to the outside, resulting in uneven light source intensity.

[0009] Preferably, the first end of the optical fiber has a limiting portion. After the first end of the optical fiber is inserted into the optical fiber jack, the limiting portion abuts against the surface of the optical fiber jack, and the end of the first end of the optical fiber is located at the center of the test tube mounting groove.

[0010] Preferably, a pressure plate is provided outside the test tube holder, and a plurality of fixing grooves for accommodating optical fibers are provided on the pressure plate.

[0011] Preferably, the fixing groove is provided with a cover plate which abuts against the optical fiber to prevent the optical fiber from loosening or falling off from the optical fiber jack, and at the same time serves as a guide for the installation of the optical fiber, thereby facilitating the installation of the optical fiber.

[0012] Preferably, the test tube holder is located on a module base integrally formed with the test tube holder, thereby reducing the processing difficulty requirement.

[0013] Preferably, a module heating film is provided on the module base to heat the four inflection points of the module base simultaneously or individually.

[0014] A gene amplification instrument includes an optical fiber installation structure and a filter wheel connected to the second end of the optical fiber. The second end of the optical fiber is provided with a positioning convex ring, and the filter wheel is provided with a pressure ring pressed on the positioning convex ring to facilitate fixing the optical fiber.

[0015] Preferably, a silicone pad is provided between the positioning convex ring and the pressing ring. Due to processing errors, the heights of the optical fiber positioning convex rings are inconsistent, which can ensure that each optical fiber can be pressed tightly.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. The utility model provides an optical fiber installation structure, including a test tube holder and an optical fiber. At least one row of the test tube holder surface is provided with a recess for accommodating the optical fiber. The optical fiber can be inserted into the optical fiber jack along the recess, which can ensure that the optical fiber is not bent, thereby ensuring that the fiber core in the optical fiber is not broken, greatly extending the service life of the optical fiber.

[0018] 2. The gene amplification instrument of the utility model also includes a filter wheel, a positioning convex ring is provided at the second end of the optical fiber, and a pressure ring is provided on the filter wheel to press on the positioning convex ring, so as to facilitate fixing the second end of the optical fiber.

[0019] 3. The module base of the utility model is provided with a module heating film, which heats the four inflection points of the module base simultaneously or individually. In addition, the heating power of each heating resistor wire can also be selected, thereby obtaining different temperature compensation values. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the optical fiber installation structure.

[0021] Figure 2 Schematic diagram of the arrangement of the test tube holder.

[0022] Figure 3 A partial cross-sectional view of the module base.

[0023] Figure 4 It is a structural schematic diagram of the pressure plate.

[0024] Figure 5 Schematic diagram of the assembly of the module heating film.

[0025] Figure 6 Schematic diagram of the structure of the module heating film.

[0026] Figure 7 This is a schematic diagram of the main structure of the gene amplification instrument.

[0027] Figure 8 Schematic diagram of the filter wheel structure.

[0028] Fig. 9 for Figure 8 A partial enlarged view of part A.

[0029] Fig.10 Schematic diagram of the structure of optical fiber.

[0030] In the figure, the test tube holder 1, the optical fiber jack 1-1, the give way groove 1-2, the optical fiber 2, the limit part 2-1, the positioning convex ring 2-2, the pressure plate 3, the fixing groove 3-1, the cover plate 3-2, the module base 4, the filter wheel 5, the pressure ring 5-1, the silicone pad 5-2, and the module heating film 6. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the technical solution of the utility model, a detailed description is given below in conjunction with the accompanying drawings and specific embodiments.

[0032] Example 1

[0033] like Figure 1-4 As shown, an optical fiber installation structure comprises:

[0034] Test tube holders 1 arranged in at least two rows, having optical fiber jacks 1-1;

[0035] Optical fiber 2, the first end of which is arranged in a straight line or tends to be straight line in the optical fiber plug hole 1-1. In this embodiment, the first end of which is arranged in a straight line in the optical fiber plug hole 1-1 is taken as an example;

[0036] At least one row of test tube holders 1 is provided with recesses 1 - 2 for accommodating optical fibers 2 on its surface.

[0037] When installing the optical fiber 2, the optical fiber 2 is directly connected to the first row of test tube holders 1. When installing the optical fiber 2 of the second row of test tube holders 1, the first end of the optical fiber 2 needs to pass through the give way groove 1-2 on the first row of test tube holders 1 and then be directly inserted into the optical fiber jack 1-1 of the second row of test tube holders 1. This can ensure that the optical fiber is not bent, thereby ensuring that the fiber core in the optical fiber is not broken, greatly extending the service life of the optical fiber.

[0038] Specifically, the test tube holder 1 is a roughly cylindrical structure, the upper surface of which is concave downward to form a test tube installation groove for accommodating the test tube, and the circumferential side wall is provided with an optical fiber jack 1-1, the first end of the optical fiber 2 has a limiting portion 2-1, and after the first end of the optical fiber 2 is inserted into the optical fiber jack 1-1, the limiting portion 2-1 is against the surface of the optical fiber jack 1-1, and the end of the first end of the optical fiber 2 is located at the center of the test tube installation groove, that is, the end of the first end of the optical fiber 2 is at the same distance from each point on the inner wall of the test tube installation groove on the same horizontal plane, ensuring the uniformity of the light source intensity, and at the same time, preventing the space in the test tube installation groove from being encroached, ensuring the test effect. In addition, there is a certain distance between the giving way groove 1-2 and the test tube installation groove of the test tube holder 1, that is, preventing the giving way groove 1-2 from penetrating the test tube installation groove, and preventing the light source in the test tube installation groove from emitting to the outside, resulting in uneven light source intensity.

[0039] like Figure 2 As shown, in this embodiment, 48 test tube holders 1 are taken as an example, which are divided into 4 groups, namely, group A, group B, group C, and group D. Each group is arranged with three rows and four columns. The 12 test tube holders in group A are numbered A1, A2, and A3 as rows, and B1, B2, B3, and B4 as columns. The optical fiber 2 can be directly connected to the test tube holder 1 in row A1. The optical fiber 2 needs to be directly inserted into the test tube holder 1 in row A2 through the recess 1-2 of the test tube holder 1 in row A1. The optical fiber 2 needs to be directly inserted into the test tube holder 1 in row A3 through the recess 1-2 of the test tube holder 1 in row A1 and the test tube holder 1 in row A2. In actual use, it can also be used for 16-well, 32-well, 96-well test tube groups or a combination of the above test tube groups.

[0040] like Figure 2-3 As shown, based on the size of the existing test tube set, in order to allow the optical fiber 2 to be inserted into the optical fiber jack 1-1 in a straight line, the optical fiber jack 1-1 and Figure 2 The horizontal angle shown is 70-75 degrees, preferably 71.5-72.5 degrees; more preferably, 72 degrees, that is, after the optical fiber 2 is inserted into the optical fiber jack 1-1, the optical fiber 2 and the Figure 2 The horizontal angle shown is 72 degrees. In order to achieve the linear installation of the optical fiber 2, the recess 1-2 and Figure 2 The angle in the horizontal direction shown is also 72 degrees.

[0041] like Figure 4As shown, the test tube holder 1 is provided with a pressing plate 3 on the outside, and a plurality of fixing grooves 3-1 for accommodating the optical fiber 2 are provided on the pressing plate 3. The fixing grooves 3-1 are in the same straight line with the corresponding optical fiber jacks 1-1, and a cover plate 3-2 is provided on the fixing grooves 3-1 to abut against the optical fiber 2. When in use, the optical fiber 2 is first installed into the fixing grooves 3-1, and then the first end of the optical fiber 2 is connected to the optical fiber jack 1-1, and finally the cover plate 3-2 is covered to position the optical fiber to prevent the optical fiber 2 from loosening or falling off from the optical fiber jack 1-1, and at the same time, it plays a guiding role in the installation of the optical fiber, facilitating the installation of the optical fiber 2.

[0042] In addition, the test tube holder 1 is located on a module base 4 that is integrally formed with the test tube holder 1, that is, when the module base 4 and the test tube holder 1 are processed as a whole, the optical fiber jack 1-1 on the side of each test tube holder 1 can be directly processed with a drill bit, without the need to first process the module base 4, then process each test tube holder 1, and then tightly fit the test tube holder 1 onto the module base 2. In other words, there is no need to assemble the test tube holder 1 and the module base 4 of the present application, the overall structural accuracy is high, the requirements for processing technology are low, and compared with the processing method in the prior art, the cost can be greatly reduced.

[0043] like Figure 5-6 As shown, a module heating film 6 is provided on the module base 4, and the four inflection points of the module base 4 are heated simultaneously or individually; specifically, the module heating film body is an annular rectangular structure, and heating resistance wires are provided on the four sides. For example, the first heating resistance wire is located at the upper left corner of the module heating film body, with the 1b end extending from the left side and the 1a end extending from the upper end; the second heating resistance wire is located at the upper right corner of the module heating film body, with the 2b end extending from the right side and the 2a end extending from the upper end; when in use, the four heating resistance wires can be heated at the same time, or one or several heating resistance wires can be heated individually. In addition, the heating power of each heating resistance wire can also be selected, so that different temperature compensation values ​​can be obtained. For example, if the temperature of point B in the upper left corner of the four corners is low, the heating power of point B can be increased to make the temperatures of the four corners equal.

[0044] like Figure 7-10 As shown, a gene amplification instrument includes an optical fiber installation structure and a filter wheel 5 connected to the second end of the optical fiber. The second end of the optical fiber is provided with a positioning convex ring 2-2, and the filter wheel 5 is provided with an optical fiber installation hole. The second end of the optical fiber is located in the optical fiber installation hole, and the positioning convex ring 2-2 is provided with a pressure ring 5-1, which is pressed on the positioning convex ring 2-2 to prevent the second end of the optical fiber from escaping from the filter wheel 5. The pressure ring 5-1 is a disc-shaped structure, and a receiving hole for accommodating the second end of the optical fiber is provided on the surface. The size of the receiving hole is smaller than the size of the positioning convex ring 2-2, so that the pressure ring 5-1 can be pressed on the positioning convex ring 2-2 to position the positioning convex ring 2-2.

[0045] Due to the existence of processing errors, the heights of the optical fiber positioning protruding rings are inconsistent. A silicone pad 5-2 is provided between the positioning protruding ring 2-2 and the pressing ring 5-1, which can ensure that each optical fiber can be pressed tightly.

[0046] The above are only preferred embodiments of the present invention. The protection scope of the present invention shall be based on the scope defined by the claims. Several improvements and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall also be regarded as the protection scope of the present invention.

Claims

1. An optical fiber installation structure, characterized in that: include: Test tube holders (1) arranged in at least two rows have optical fiber insertion holes (1-1); An optical fiber (2), the first end of which is arranged in a linear or linear manner in the optical fiber insertion hole (1-1); The surface of at least one row of test tube holders (1) is provided with recesses (1-2) for accommodating optical fibers (2).

2. The optical fiber installation structure according to claim 1, characterized in that: The angle between the optical fiber jack (1-1) and the horizontal direction is 70-75 degrees.

3. The optical fiber installation structure according to claim 2, characterized in that: The angle between the optical fiber jack (1-1) and the horizontal direction is 71.5-72.5 degrees.

4. The optical fiber installation structure according to claim 1, characterized in that: There is a certain distance between the clearance groove (1-2) and the test tube installation groove of the test tube holder (1).

5. The optical fiber installation structure according to claim 1, characterized in that: The first end of the optical fiber (2) has a limiting portion (2-1).

6. The optical fiber installation structure according to claim 1, characterized in that: The test tube holder (1) is provided with a pressing plate (3) outside, and the pressing plate (3) is provided with a plurality of fixing grooves (3-1) for accommodating optical fibers (2).

7. The optical fiber installation structure according to claim 6, characterized in that: The fixing groove (3-1) is provided with a cover plate (3-2) which abuts against the optical fiber (2).

8. The optical fiber installation structure according to claim 1, characterized in that: The test tube holder (1) is located on a module base (4) that is integrally formed with the test tube holder (1).

9. The optical fiber installation structure according to claim 8, characterized in that: A module heating film (6) is provided on the module base (4).

10. A gene amplification instrument, characterized in that: It comprises an optical fiber installation structure as described in any one of claims 1 to 9, and also comprises a filter wheel (5) connected to the second end of the optical fiber, the second end of the optical fiber is provided with a positioning protrusion (2-2), and the filter wheel (5) is provided with a pressure ring (5-1) pressed on the positioning protrusion (2-2).

11. A gene amplification instrument according to claim 10, characterized in that: A silicone pad (5-2) is provided between the positioning convex ring (2-2) and the pressure ring (5-1).

Images