Hot cover device and PCR instrument

Abstract

The utility model belongs to the technical field of in-vitro diagnosis, and provides a heat cover device and a PCR (Polymerase Chain Reaction) instrument, the heat cover device comprises a main cover body assembly, and the main cover body assembly is provided with at least one pipe position for placing a PCR pipe; the hot sliding cover mechanism comprises a heating assembly, the hot sliding cover mechanism is arranged on the main cover body assembly in a sliding mode so as to be switched between a closed state and an open state, and when the hot sliding cover mechanism is in the closed state, the hot sliding cover mechanism is arranged on the PCR pipe at the pipe position in a covering mode so that the heating assembly can heat the PCR pipe to the preset temperature and keep the temperature; when the hot sliding cover mechanism is in an open state, the PCR tube can enter and exit from the tube position; the circuit assembly comprises a power supply circuit board, a heat cover circuit board arranged on the heat sliding cover mechanism and electrically connected with the heating assembly, and a flexible circuit board used for being connected to the power supply circuit board and the heat cover circuit board, and the power supply circuit board and the heat cover circuit board are both located on the inner side of the main cover body assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of in vitro diagnosis, and in particular relates to a hot cover device and a PCR instrument. Background Art

[0002] Fluorescence PCR instrument is an instrument for polymerase chain reaction that collects real-time fluorescence signals. Its structure mainly includes the body, heat cover, tube rack, etc. The heat cover is an important part of the fluorescence PCR instrument. Its main function is to control the temperature of the heat cover to maintain at 105℃, keep the temperature of the PCR tube cover higher than the evaporation temperature of water, and prevent the evaporation and condensation of the liquid at the bottom of the PCR tube to the tube wall, resulting in the failure of the reagent.

[0003] At present, the thermal cover mechanism of the fluorescent PCR instrument mainly adopts the following two structures, one of which is a flip cover structure, in which the thermal cover is opened or closed by a rotating shaft. The failure rate often occurs in the flip cover shaft and the electrical connection line, which is easy to loosen or break, and the flip cover mechanism occupies a large space, and the opening and closing control of the thermal cover is complicated.

[0004] Most of the existing sliding heat cover structures are complex in structure, not suitable for use in small or micro portable devices, increase the number of parts of the mechanism, and have high manufacturing costs. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a thermal cover device for use in small or micro portable devices to solve the problem of aging of electrical connecting wires caused by frequent sliding of the heating body and the body on the thermal cover, which in turn causes the electrical connecting wires to loosen or break.

[0006] Another object of the present invention is to provide a PCR instrument that is easy to carry, has a simple structure, and is low in cost. Compared with existing PCR instruments, the service life of the PCR instrument is increased.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a thermal cover device, comprising:

[0009] A main cover assembly, on which is disposed at least one tube position capable of placing a PCR tube;

[0010] A thermal sliding cover mechanism, the thermal sliding cover mechanism comprises a heating component, the thermal sliding cover mechanism is slidably arranged on the main cover body component to switch between a closed state and an open state, the thermal sliding cover mechanism is in the closed state, the thermal sliding cover mechanism covers the PCR tube in the tube position, so that the heating component heats the PCR tube to a preset temperature and keeps it warm; the thermal sliding cover mechanism is in the open state, and the PCR tube can enter and exit the tube position;

[0011] The circuit assembly includes a power supply circuit board, a heat cover circuit board arranged on the heat sliding cover mechanism and electrically connected to the heating assembly, and a flexible circuit board used to connect to the power supply circuit board and the heat cover circuit board, and the power supply circuit board and the heat cover circuit board are both located on the inner side of the main cover assembly.

[0012] Preferably, the thermal sliding cover mechanism further comprises:

[0013] a heat cover assembly, wherein the heating assembly is connected to a lower surface of the heat cover assembly;

[0014] The thermal cover device further comprises a sliding guide assembly for guiding the thermal cover assembly. The sliding guide assembly is arranged on the inner side of the main cover assembly, and a group of the sliding guide assembly is arranged on both sides of the thermal cover assembly.

[0015] Preferably, the sliding guide assembly comprises:

[0016] A guide assembly is arranged on the inner side of the main cover assembly, and a group of the guide assembly is respectively arranged on both sides of the thermal cover assembly;

[0017] A sliding member is slidably arranged on the guide member assembly, and the thermal cover circuit board is arranged on the sliding member, and the thermal cover assembly is integrally connected with the sliding member.

[0018] Preferably, the guide component comprises:

[0019] a support member connected to the inner side of the main cover assembly;

[0020] A guide member has one end fixed to the support member, and the sliding member is slidably arranged on the guide member.

[0021] Preferably, the thermal cover assembly comprises:

[0022] A thermal sliding cover, which is integrally connected to the sliding member, and the thermal sliding cover can slide and cover the pipe position;

[0023] A pressing connecting member, an elastic member and a heating support member, wherein one end of the pressing connecting member is connected to the inner side of the thermal slide cover, and the other end is connected to the heating support member;

[0024] The elastic member is sleeved on the pressing connecting member, and one end of the elastic member presses against the inner side of the thermal sliding cover, and the other end presses against the heating support member;

[0025] The heating component is arranged on the lower surface of the heating support member.

[0026] Preferably, a transition inclined surface is provided at the front end of the heating support member, and the transition inclined surface extends gradually and obliquely from the front end of the heating support member backwards toward the bottom surface of the heating support member.

[0027] Preferably, the heating assembly comprises a heating element disposed on the lower surface of the heating support member, and the heating element is a resistive heating film.

[0028] Preferably, the thermal cover device further comprises:

[0029] A first locking member and a second locking member, one of which is arranged on the thermal sliding cover mechanism, and the other is arranged on the inner side of the main cover body assembly, and the first locking member can be clamped with the second locking member.

[0030] Preferably, the thermal cover device further comprises:

[0031] The driving assembly and the connecting assembly are both arranged on the inner side of the main cover assembly;

[0032] The connecting component is connected to the output end of the driving component, the connecting component is connected to the thermal cover component, and the driving component drives the thermal cover component to reciprocate through the connecting component.

[0033] The utility model also provides a PCR instrument, comprising the thermal cover device.

[0034] Compared with the prior art, the utility model has the following beneficial effects:

[0035] The thermal cover device of the utility model places a PCR tube on the tube position of the main cover body assembly to facilitate the detection of sample reagents in the PCR tube. The heating component is located on the lower surface of the thermal sliding cover mechanism. When the thermal sliding cover mechanism is covered on the top of the PCR tube, the heating component can heat the PCR tube to a preset temperature and keep it warm to facilitate the detection of sample reagents in the PCR tube.

[0036] The heat cover circuit board is electrically connected to the heating assembly to facilitate the control of the operation of the heating assembly. The power supply circuit board and the heat cover circuit board are arranged on the same side of the main cover assembly, and the structure is compact. The power supply circuit board and the heat cover circuit board are connected through a flexible circuit board. During the reciprocating sliding of the above-mentioned heat slide mechanism relative to the main cover assembly, the heat cover circuit board moves synchronously with the heat slide mechanism. The flexible circuit board has good flexibility, which can avoid the aging of the electrical connection line caused by long-term frequent sliding of the heat slide mechanism, thereby causing the connection to become loose or broken, thereby increasing the service life of the heat cover device and reducing the frequency of maintenance and replacement. At the same time, it also reduces the use cost of the PCR instrument equipped with the heat cover device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of the thermal cover device in the utility model (the thermal sliding cover is opened);

[0038] Figure 2 It is a structural schematic diagram of the first angle of the inner side of the thermal cover device of the utility model (the thermal sliding cover is in the open state);

[0039] Figure 3 It is a structural schematic diagram of the second angle of the inner side of the thermal cover device of the utility model (the thermal sliding cover is in the open state);

[0040] Figure 4 It is a structural schematic diagram of the third angle of the inner side of the thermal cover device of the utility model (the thermal sliding cover is in the open state);

[0041] Figure 5 It is a structural schematic diagram of the thermal cover device in the utility model (the thermal sliding cover is closed);

[0042] Figure 6 This is a front view of the thermal cover device in the utility model (the thermal slide cover is closed);

[0043] Figure 7 For the utility model Figure 6 AA-direction structural diagram;

[0044] Figure 8 It is a structural schematic diagram of the first angle of the inner side of the thermal cover device of the utility model (the thermal sliding cover is closed);

[0045] Fig. 9 It is a structural schematic diagram of the thermal cover assembly in the utility model from a first angle;

[0046] Fig.10 It is a structural schematic diagram of the heat cover assembly in the utility model at a second angle;

[0047] Fig.11 It is a front view of the thermal cover assembly in the utility model;

[0048] Fig.12 For the utility model Fig.11 Schematic diagram of the BB-direction structure;

[0049] Fig.13 For the utility model Fig.11 Schematic diagram of the CC structure.

[0050] Among them, 1. main cover assembly; 11. machine body; 12. pipe rack;

[0051] 21. Sliding connection assembly; 211. Guide assembly; 2111. Support member; 2112. Guide member; 212. Sliding member; 22. Thermal cover assembly; 221. Thermal sliding cover; 222. Pressing connection member; 224. Heating support member; 2241. Transition inclined surface;

[0052] 3. First locking member; 4. Second locking member;

[0053] 5. Connecting assembly; 51. Connecting guide; 52. Connecting sliding member;

[0054] 6. Circuit assembly; 61. Power supply circuit board; 62. Thermal cover circuit board; 63. Flexible circuit board. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0056] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0058] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0059] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0061] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0062] like Figure 1-Figure 13 As shown, in this embodiment, a hot cover device is provided, which includes a main cover assembly 1, a hot sliding cover mechanism and a circuit assembly 6, wherein the main cover assembly 1 is provided with at least one tube position capable of placing a PCR tube. The hot sliding cover mechanism includes a heating assembly (not shown in the figure), the hot sliding cover mechanism is slidably arranged on the main cover assembly 1 to switch between a closed state and an open state, the hot sliding cover mechanism is in a closed state, and the hot sliding cover mechanism is covered on the PCR tube in the tube position so that the heating assembly heats the PCR tube to a preset temperature and keeps it warm; the hot sliding cover mechanism is in an open state, and the PCR tube can enter and exit the tube position. The circuit assembly 6 includes a power supply circuit board 61, and a hot cover circuit board 62 arranged on the hot sliding cover mechanism and electrically connected to the heating assembly, and a flexible circuit board 63 for connecting to the power supply circuit board 61 and the hot cover circuit board 62, and the power supply circuit board 61 and the hot cover circuit board 62 are both located on the inner side of the main cover assembly 1.

[0063] The thermal cover device is used to place a PCR tube on the tube position of the main cover assembly 1, so as to facilitate the detection of sample reagents in the PCR tube. Specifically, the thermal sliding cover mechanism can slide relative to the main cover assembly 1, slide to the top of the tube position and cover the top of the tube position, that is, the top of the PCR tube placed at the tube position. The heating component is located on the lower surface of the thermal sliding cover mechanism. When the thermal sliding cover mechanism covers the top of the PCR tube, the heating component can heat the PCR tube to a preset temperature and keep it warm, so as to facilitate the detection of sample reagents in the PCR tube.

[0064] The hot cover circuit board 62 is electrically connected to the heating assembly to facilitate the control of the operation of the heating assembly. The power supply circuit board 61 and the hot cover circuit board 62 are arranged on the same side of the main cover assembly 1, and the structure is compact. The power supply circuit board 61 and the hot cover circuit board 62 are connected by a flexible circuit board 63. During the reciprocating sliding of the above-mentioned hot sliding cover mechanism relative to the main cover assembly 1, the hot cover circuit board 62 moves synchronously with the hot sliding cover mechanism. The flexible circuit board 63 has good flexibility, which can avoid the aging of the electrical connection line caused by long-term frequent sliding of the hot sliding cover mechanism, thereby causing the connection to become loose or broken, thereby increasing the service life of the hot cover device and reducing the frequency of maintenance and replacement. At the same time, it also reduces the use cost of the PCR instrument equipped with the hot cover device.

[0065] Specifically, the flexible circuit board 63 is a conventional FPC (Flexible Printed Circuit), which is made of flexible and curved cables and has good flexibility, and can effectively resist bending and aging caused by long-term frequent sliding. At the same time, the flexible circuit board 63 also has good wear resistance and corrosion resistance, which can extend the service life of the mechanism.

[0066] Specifically, the main cover assembly 1 includes a body 11 and a tube rack 12, wherein the thermal sliding cover mechanism can slide relative to the body 11. A groove is provided on the body 11, and the tube rack 12 is arranged at the groove. The tube rack 12 is installed at the groove to form a tube position for detecting sample reagents in PCR tubes of the PCR instrument. The tube rack 12 is used to place the PCR tube to be tested, and the reagent to be tested is placed in the PCR tube, and the PCR tube is located in the internal space formed between the groove and the thermal sliding cover mechanism.

[0067] Preferably, the hot sliding cover mechanism further comprises a hot cover assembly 22, and the heating assembly is connected to the lower surface of the hot cover assembly 22. The hot cover device further comprises a sliding guide assembly 21 for guiding the hot cover assembly 22, the sliding guide assembly 21 is arranged on the inner side of the main cover assembly 1, and a set of sliding guide assemblies 21 are arranged on both sides of the hot cover assembly 22.

[0068] Preferably, the sliding guide assembly 21 is arranged on the inner side of the main cover assembly 1, and a set of sliding guide assemblies 21 are arranged on both sides of the thermal cover assembly 22. The thermal cover assembly 22 is connected to the sliding guide assembly 21, and the thermal cover circuit board 62 is arranged on the sliding guide assembly 21. The thermal cover assembly 22 and the thermal cover circuit board 62 synchronously slide back and forth along the sliding guide assembly 21 relative to the main cover assembly 1 to be located directly above the pipe position.

[0069] In this embodiment, the hot cover assembly 22 can slide relative to the main cover assembly 1 through the sliding guide assembly 21, so as to slide to the groove of the above-mentioned body 11. After the PCR tube is placed in the tube rack 12, the hot cover assembly 22 slides to the groove, and the PCR instrument starts working and testing. When the test is completed, the hot cover assembly 22 is removed, that is, the hot cover assembly 22 of the PCR instrument is opened, and the PCR tube is taken out.

[0070] A set of sliding guide assemblies 21 are disposed on both sides of the thermal cover assembly 22 to ensure stability and smoothness of the thermal cover assembly 22 during sliding.

[0071] The specific structure of the above-mentioned sliding guide assembly 21 is preferably that the sliding guide assembly 21 includes a guide assembly 211 and a sliding member 212, which are arranged on the inner side of the main cover assembly 1, and a group of guide assembly 211 is respectively arranged on both sides of the thermal cover assembly 22. The sliding member 212 is slidably arranged on the guide assembly 211, and the thermal cover circuit board 62 is arranged on the sliding member 212, and the thermal cover assembly 22 is integrally formed and connected with the sliding member 212.

[0072] The sliding guide assembly 21 is arranged on the inner side of the main cover assembly 1, so that the overall structure of the thermal cover device is compact, small in size, and easy to carry and use. Specifically, the sliding guide assembly 21 is arranged on the inner side of the body 11, and the sliding member 212 and the thermal cover assembly 22 are connected as a whole. The two adopt an integrated structure to ensure the firmness of the connection between the thermal cover assembly 22 and the sliding member 212, and at the same time improve the sliding stability of the thermal cover assembly 22. Specifically, the thermal cover assembly 22 and the sliding member 212 are injection molded together, and the two are injection molded, which is low in cost.

[0073] Preferably, the guide member assembly 211 comprises a support member 2111 and a guide member 2112, wherein the support member 2111 is connected to the inner side of the main cover assembly 1. One end of the guide member 2112 is fixed to the support member 2111, and the sliding member 212 is slidably disposed on the guide member 2112. The support member 2111 is used to support and fix the guide member 2112, and has a simple structure, is compact and has low cost.

[0074] Preferably, grease is coated on the guide member 2112 , and the guide member 2112 passes through the sliding member 212 , so that the heat cover assembly 22 integrated with the sliding member 212 is fixed on the machine body 11 .

[0075] In other optional embodiments, with respect to the structure of the above-mentioned sliding guide assembly 21, the guide member assembly 211 may not include the support member 2111 and the guide member 2112, but the sliding guide assembly 21 also includes a screw assembly and a rotating block, wherein the screw assembly is arranged on the inner side of the main cover body assembly 1, and a group of screw assemblies are respectively arranged on both sides of the thermal cover assembly 22, the rotating block is rotatably connected to the screw assembly, and the thermal cover circuit board 62 is arranged on the sliding member 212, and the thermal cover assembly 22 is integrally connected to the rotating block.

[0076] Further specifically, the above-mentioned screw assembly includes a screw and a mounting member, the mounting member is connected to the inner side of the main cover body assembly 1, that is, the mounting member is installed on the inner side of the machine body 11, both ends of the screw are connected to the mounting member, and the mounting member is used to support the rotation of the screw, and the rotating block and the hot cover assembly 22 synchronously reciprocate along the axial direction of the screw.

[0077] Preferably, the thermal cover assembly 22 includes a thermal sliding cover 221, a pressing connector 222, an elastic member, and a heating support member 224, wherein the thermal sliding cover 221 is integrally connected to the sliding member 212, and the thermal sliding cover 221 can slide and cover the pipe position. That is, the thermal sliding cover 221 can cover the groove of the body 11.

[0078] One end of the pressing connector 222 is connected to the inner side of the thermal slide 221, and the other end is connected to the heating support 224. The elastic member is sleeved on the pressing connector 222, and one end of the elastic member presses against the inner side of the thermal slide 221, and the other end presses against the heating support 224. The heating assembly is disposed on the lower surface of the heating support 224 to heat the PCR tube in the tube position.

[0079] During operation, the hot slide cover 221 is pressed, and the hot slide cover 221 slides along the guide member 2112, and the hot slide cover 221 is opened to facilitate the placement of the PCR tube. After the PCR tube is placed, the hot slide cover 221 is pressed to slide the PCR tube. At this time, the elastic member provided between the hot slide cover 221 and the heating support member 224 presses the heating support member 224 to press the heating support member 224 against the top of the PCR tube, and the heating assembly heats the PCR tube.

[0080] In this embodiment, the sliding member 212 and the thermal sliding cover 221 are integrally injection molded, and the two are an integrated structure, which avoids the connection components between the guide member 2112 and the thermal sliding cover 221, reduces the number of parts of the thermal cover device, improves the stability of the thermal cover device, and simplifies the manufacture and maintenance of the thermal cover device.

[0081] Furthermore, since the two are an integrated structure, the connection between the guide member 2112 and the thermal slide cover 221 is more secure, thereby reducing the risk of loosening or breaking caused by the connection using a connecting member in the prior art.

[0082] In this embodiment, the thermal slide cover 221 is groove-shaped, and the pressing connector 222, the elastic member (not shown in the figure), the heating support member 224 and the heating assembly are all located inside the thermal slide cover 221, saving working space.

[0083] Preferably, the pressing connector 222 is a T-shaped column, one end of the pressing connector 222 is fixedly connected to the thermal slide cover 221 , and the other end is a T-shaped head for connecting to the heating support 224 .

[0084] Preferably, the pressing connectors 222 are evenly distributed on the heating support 224. Further preferably, the pressing connectors 222 are four groups.

[0085] Preferably, the front end of the heating support 224 is provided with a transition inclined surface 2241, and the front end refers to the front end of the heating support 224 when the heating support 224 is covered. The transition inclined surface 2241 gradually extends from the front end to the rear end of the heating support 224 toward the bottom surface of the heating support 224, and the transition inclined surface 2241 is connected to the arc of the bottom surface of the heating support 224. The bottom surface of the heating support 224 refers to the side of the heating support 224 on which the heating body is provided. The transition inclined surface 2241 can make the heat sliding cover mechanism smoothly switch from the open state to the closed state, and effectively avoid the heat sliding cover mechanism being unable to be covered on the pipe rack 12 due to the stop of the machine body 11.

[0086] Preferably, the heating assembly includes a heating element disposed on the lower surface of the heating support 224, and the heating element is a resistance type heating film. The resistance type heating film is used to heat the PCR tubes at the tube rack 12.

[0087] More specifically, a seal is provided between the thermal slide cover 221 and the body 11 to minimize the evaporation of water in the reagent.

[0088] Preferably, the thermal cover device further comprises a first locking member 3 and a second locking member 4, one of which is arranged on the thermal sliding cover mechanism, and the other is arranged on the inner side of the main cover assembly 1, and the first locking member 3 can be clamped with the second locking member 4. When the thermal sliding cover 221 is opened and slid to the extreme position, the first locking member 3 and the second locking member 4 are used to lock, thereby fixing the thermal sliding cover 221 and preventing the thermal sliding cover 221 from moving.

[0089] In this embodiment, the first locking member 3 is a clamp, and the second locking member 4 is a buckle, and the buckle can be clamped on the buckle.

[0090] Preferably, the sliding guide assembly 21 further comprises a driving assembly and a connecting assembly 5, both of which are arranged on the inner side of the main cover assembly 1. The connecting assembly 5 is connected to the output end of the driving assembly, and the connecting assembly 5 is connected to the thermal cover assembly 22, and the driving assembly drives the thermal cover assembly 22 to reciprocate through the connecting assembly 5.

[0091] The driving assembly is used to drive the heat cover assembly 22 to automatically reciprocate, thereby realizing automated action, and the heat cover assembly 22 moves more stably.

[0092] Further preferably, the driving assembly comprises a motor, which is arranged inside the body 11 and connected to the output end of the connecting assembly 5. The motor control makes the hot cover device more stable when working and improves its usability.

[0093] Preferably, the connection assembly 5 comprises a connection guide 51 and a connection slide 52, wherein one end of the connection guide 51 is disposed on the main cover assembly 1. The connection slide 52 is slidably disposed on the connection guide 51, and the thermal sliding cover mechanism is connected to the connection slide 52.

[0094] Specifically, the sliding member 21 in this embodiment is connected to the thermal sliding cover 221 and the connecting sliding member 52 at the same time. More specifically, the connecting guide member 51 is a connecting guide rod, and the connecting sliding member 52 is a sliding block.

[0095] This embodiment also provides a PCR instrument, including a thermal cover device. The PCR instrument has a simple structure, low cost, and a long service life compared to existing PCR instruments.

[0096] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A thermal cover device, characterized in that: include: A main cover assembly (1) is provided with at least one tube position capable of placing a PCR tube; A thermal sliding cover mechanism, the thermal sliding cover mechanism comprising a heating component, the thermal sliding cover mechanism being slidably arranged on the main cover body component (1) to switch between a closed state and an open state, the thermal sliding cover mechanism being in the closed state, the thermal sliding cover mechanism being arranged to cover the PCR tube at the tube position, so that the heating component heats the PCR tube to a preset temperature and keeps the temperature constant; The thermal sliding cover mechanism is in the open state, and the PCR tube can enter and exit the tube position; The circuit assembly (6) comprises a power supply circuit board (61), a heat cover circuit board (62) arranged on the heat sliding cover mechanism and electrically connected to the heating assembly, and a flexible circuit board (63) used to connect to the power supply circuit board (61) and the heat cover circuit board (62), wherein the power supply circuit board (61) and the heat cover circuit board (62) are both located on the inner side of the main cover assembly (1).

2. The thermal cover device according to claim 1, characterized in that: The thermal slide mechanism also includes: A heat cover assembly (22), wherein the heating assembly is connected to the lower surface of the heat cover assembly (22); The thermal cover device further comprises a sliding guide assembly (21) for guiding the thermal cover assembly (22); the sliding guide assembly (21) is arranged on the inner side of the main cover assembly (1), and a group of the sliding guide assembly (21) is arranged on both sides of the thermal cover assembly (22).

3. The thermal cover device according to claim 2, characterized in that: The sliding guide assembly (21) comprises: A guide member assembly (211) is arranged on the inner side of the main cover assembly (1), and a group of the guide member assembly (211) is respectively arranged on both sides of the thermal cover assembly (22); A sliding member (212) is slidably arranged on the guide member assembly (211), and the thermal cover circuit board (62) is arranged on the sliding member (212), and the thermal cover assembly (22) is integrally connected to the sliding member (212).

4. The thermal cover device according to claim 3, characterized in that: The guide member assembly (211) comprises: A support member (2111) connected to the inner side of the main cover assembly (1); The guide member (2112) has one end fixed to the support member (2111), and the sliding member (212) is slidably disposed on the guide member (2112).

5. The thermal cover device according to claim 3 or 4, characterized in that: The thermal cover assembly (22) comprises: A thermal sliding cover (221) which is integrally connected to the sliding member (212), and the thermal sliding cover (221) can slide and cover the pipe position; A pressing connection member (222), an elastic member and a heating support member (224), wherein one end of the pressing connection member (222) is connected to the inner side of the thermal sliding cover (221), and the other end is connected to the heating support member (224); The elastic member is sleeved on the pressing connecting member (222), and one end of the elastic member presses against the inner side of the thermal sliding cover (221), and the other end presses against the heating support member (224); The heating component is arranged on the lower surface of the heating support member (224).

6. The thermal cover device according to claim 5, characterized in that: The front end of the heating support member (224) is provided with a transition inclined surface (2241), and the transition inclined surface (2241) extends from the front end of the heating support member (224) backwards and gradually towards the bottom surface of the heating support member (224).

7. The thermal cover device according to claim 5, characterized in that: The heating assembly comprises a heating element arranged on the lower surface of the heating support member (224), and the heating element is a resistance-type heating film.

8. The thermal cover device according to any one of claims 1 to 4, characterized in that: The thermal cover device also includes: A first locking member (3) and a second locking member (4), wherein one of the first locking member (3) and the second locking member (4) is arranged on the thermal sliding cover mechanism, and the other is arranged on the inner side of the main cover body assembly (1), and the first locking member (3) can be clamped with the second locking member (4).

9. The thermal cover device according to any one of claims 2 to 4, characterized in that: The thermal cover device also includes: The driving assembly and the connecting assembly (5) are both arranged on the inner side of the main cover assembly (1); The connecting component (5) is connected to the output end of the driving component, the connecting component (5) is connected to the thermal cover component (22), and the driving component drives the thermal cover component (22) to reciprocate through the connecting component (5).

10. A PCR instrument, characterized in that: The invention comprises the hot cover device according to any one of claims 1 to 9.

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