Cabin door assembly and gene sequencer

By introducing abutment support structure between the limit head and the limit seat into the hatch assembly, combined with the slidable rotating parts, the problem of sinking the hatch door is solved, the stability and reliability of the hatch door is improved, and the normal operation and appearance quality of the instrument are ensured.

CN222961400UActive Publication Date: 2025-06-10SIKUN LIFE SCIENCE CO LTD
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Patent Information

Application Number
CN202421781875.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-25
Publication Date
2025-06-10
Estimated Expiration
2034-07-25

AI Technical Summary

Technical Problem

The hatch of many instruments sinks due to long-term gravity, which increases the gap between the upper end of the hatch door and the shell, affects the operation and appearance quality of the sensor, and even causes the instrument to fail to operate normally.

Method used

By introducing a limit head and a limit seat into the hatch assembly, the limit head and the limit seat abut against the support door when the hatch door is closed, preventing sinking. At the same time, a rotating member that can be slidably compatible with the abutment head reduces wear of the limit head and the limit seat.

Benefits of technology

Effectively prevent the hatch door from sinking, improve the stability and reliability of the hatch door, extend the service life of the limit head and limit seat, and ensure the normal operation and appearance quality of the instrument.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a cabin door assembly and a gene sequencer, the cabin door assembly comprises a cabin door and a shell matched with the cabin door, and the cabin door assembly further comprises a limiting head and a limiting seat; wherein the limiting head comprises an abutting head fixedly connected with the cabin door; the limiting seat comprises a fixed seat and a rotating part, the fixed seat is fixed on a shell of the instrument, the rotating part is connected with the fixed seat, and the rotating part can rotate and is used for being in rolling fit with the abutting head; when the cabin door is closed, the abutting joint can abut against the rotating piece and support the cabin door. According to the technical scheme, when the cabin door is closed, the cabin door can be supported through supporting of the limiting head and the limiting base, and then the problem that the cabin door sinks is solved; meanwhile, by arranging the rotating piece which can be in sliding fit with the abutting head, abrasion of the limiting head and the limiting base can be reduced, and then reliability of the limiting head and the limiting base is improved.
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Description

Technical Field

[0001] The present application relates to the field of instrument technology, and in particular to a hatch assembly and a gene sequencer. Background Art

[0002] Many instruments are equipped with doors. As one of the parts where users interact most frequently with the instrument, the stable function and exquisite appearance quality of the door are particularly important.

[0003] The hatches of many instruments are hinged on the side. Under the action of gravity for a long time, the hatches are prone to sinking, causing the gap between the upper end of the hatch and the shell to increase, affecting the operation of related sensors and the appearance quality; in severe cases, the hatch may not close tightly, causing the instrument to fail to operate normally. Utility Model Content

[0004] The present application provides a hatch assembly and a gene sequencer to improve the hatch sinking problem of the instrument.

[0005] In a first aspect, the present application provides a door assembly, comprising a door and a shell that cooperates with the door, characterized in that it also comprises: a limit head and a limit seat; wherein:

[0006] The limit head includes an abutment head fixedly connected to the cabin door;

[0007] The limit seat includes a fixed seat and a rotating member, wherein the fixed seat is fixed on the housing of the instrument, the rotating member is connected to the fixed seat, and the rotating member is rotatable and used for rolling cooperation with the abutment head;

[0008] When the hatch is closed, the limit head can abut against the rotating member and support the hatch.

[0009] In the above technical solution, when the hatch is closed, the hatch can be supported by the limit head and the limit seat, thereby improving the problem of the hatch sinking; at the same time, by providing a rotating part that can slide with the abutment head, the wear of the limit head and the limit seat can be reduced, thereby improving the reliability of the limit head and the limit seat.

[0010] In a possible implementation manner, the rotating member is a pulley, and the pulley is hinged to the fixed seat.

[0011] In a possible implementation manner, a guide groove is provided in the circumference of the outer ring of the pulley;

[0012] When the abutment head and the pulley are in rolling cooperation, the limiting head abuts against the guide groove.

[0013] In a possible implementation manner, the fixing seat is fixed to the housing by a threaded fastener;

[0014] The fixing seat is provided with an oblong hole, the waist length of the oblong hole is along the height direction of the instrument, and the threaded fastener passes through the oblong hole and fixes the fixing seat to the shell.

[0015] In a possible implementation manner, the limit head further includes a connecting portion;

[0016] The abutment head is fixed to the cabin door via the connection portion.

[0017] In a possible implementation manner, the limit seat is fixed to a side of the shell facing away from the cabin door;

[0018] The door is provided with an insertion hole opposite to the limiting seat. When the door is closed, the limiting head passes through the limiting hole and abuts against the rotating member.

[0019] In a possible implementation, the hatch assembly further includes a photoelectric sensor for detecting the abutment head, and the photoelectric sensor is disposed on the shell.

[0020] In a possible implementation manner, the photoelectric sensor is provided with a notch, the notch faces the rotating member and is used to accommodate a portion of the abutment head.

[0021] In a possible implementation, the door assembly further includes a buckle assembly;

[0022] The fastening assembly includes a first fastening component and a second fastening component, wherein the first fastening component is fixed to the cabin door, and the second fastening component is fixed to the shell; when the cabin door is closed, the first fastening component and the second fastening component are fastened to each other.

[0023] In a second aspect, the present application provides a gene sequencer, characterized in that it includes: a gene sequencer body, and a hatch assembly as described in any one of the above-mentioned ones arranged on the gene sequencer body.

[0024] In the above technical solution, when the hatch is closed, the hatch can be supported by the limit head and the limit seat, thereby improving the problem of the hatch sinking; at the same time, by providing a rotating part that can slide with the abutment head, the wear of the limit head and the limit seat can be reduced, thereby improving the reliability of the limit head and the limit seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the cooperation between the hatch and the shell in the embodiment of the present application;

[0026] Figure 2 This is a partial view of the hatch door assembly in the embodiment of the present application;

[0027] Figure 3 It is a schematic diagram of another form of the rotating member in the embodiment of the present application;

[0028] Figure 4 Schematic diagram of the snap-fit ​​assembly in an embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0030] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] To facilitate understanding of the hatch assembly and gene sequencer provided in the embodiment of the present application, the application scenario thereof is first described. The gene sequencer provided in the embodiment of the present application can be applied to an instrument with a hatch.

[0032] With the development of science and technology, from scientific research to manufacturing, and then to daily life, human activities are increasingly applied to various instruments. Many real instruments are equipped with hatches. As one of the most frequent parts for users to interact with the instrument, the hatch's stable function and exquisite appearance quality are particularly important.

[0033] The hatches of many instruments are hinged on the side. Under the action of gravity for a long time, the hatches are prone to sinking, which increases the gap between the upper end of the hatch and the shell. Some instruments are equipped with sensors that sense the closing of the hatch. The sinking of the hatch will affect the operation of related sensors; in severe cases, the sinking of the hatch will cause the hatch to not close tightly, which will lead to the performance of the instrument being reduced or even unable to operate normally. In addition, the sinking of the hatch will also affect the appearance quality of the instrument product.

[0034] To this end, the present application provides a door assembly to improve the door sinking problem of the instrument. The door assembly provided in the embodiment of the present application is described in detail below in conjunction with the accompanying drawings.

[0035] Refer to both Figure 1 and Figure 2 , Figure 1 which is a schematic diagram of the cooperation between the hatch and the housing in the embodiment of the present application, Figure 2 and Figure 1 which is a partial view of the hatch assembly in the embodiment of the present application. As shown in

[0036] shown, the hatch assembly in the embodiment of the present application includes a hatch 1 and a housing 2 that cooperates with the hatch 1. Specifically, the housing 2 has an opening leading to the inside of the instrument. The hatch 1 is connected to the housing 2 and can be used to close the opening on the housing 2. Specifically, the hatch 1 and the housing 2 can be connected by a side hinge, that is, one end of the hinge is fixed to one side of the hatch 1, the other end of the hinge is fixed to the housing 2, the hatch 1 is hinged to the housing 2 through the hinge, and the hatch 1 can rotate around the hinge to open and close the opening on the housing 2. Figure 2 shown, the hatch assembly further includes a limit head 3 fixedly connected to the hatch 1 and a limit seat 4 fixed to the housing 2. Among them, the limit head 3 includes a butting head 31, and the limit seat 4 includes a rotating member 41. When the hatch 1 is closed, the butting head 31 can abut against the rotating member 41 to support the hatch 1 in the height direction of the instrument, preventing the hatch 1 from sinking in the height direction of the instrument. Specifically, the limit seat 4 further includes a fixed seat 42. The fixed seat 42 is fixed to the housing 2 of the instrument. The rotating member 41 is connected to the fixed seat 42, and the rotating member 41 can rotate so that the rotating member 41 can rollingly cooperate with the butting head 31.

[0037] It should be understood that when specifically setting the connection between the rotating member 41 and the fixed seat 42, various connection methods can be adopted so that the rotating member 41 can be both connected to the fixed seat 42 and the rotating member 41 itself can rotate. For example, a rotating shaft 44 can be provided on the fixed seat 42, and the rotating member 41 can be sleeved on the rotating shaft 44; or a receiving groove can be provided on the fixed seat 42, and the rotating member 41 can be placed in the receiving groove, and the rotating member can rotate in the receiving groove.

[0038] When the hatch 1 is closed, the butting head 31 can abut against the rotating member 41 and support the hatch 1. Specifically, when the hatch 1 is closed, the rotating member 41 is located below the butting head 31 in the height direction of the instrument and supports the butting head 31 upward, thereby supporting the entire hatch 1 upward to achieve the purpose of restricting the sinking of the hatch 1.

[0039] Continue to refer to Figure 2 , during the closing process of the hatch 1, as the hatch 1 closes, the butting head 31 and the rotating member 41 change from a separated state to an abutting state. From the moment the butting head 31 starts to contact the rotating member 41 until it forms as shown in Figure 2During the process of the stable support shown, as the abutting joint 31 moves towards the direction where the fixed seat 42 is located, the abutting joint 42 can drive the rotating member 41 to roll. By setting the rotational fit between the abutting joint 31 and the fixed seat 42, it can be ensured that the friction form between the abutting joint 31 and the rotating member 41 is rolling friction as much as possible during the forward and backward movement of the abutting joint 31. Furthermore, the wear of the abutting joint 31 and the rotating member 41 can be reduced, and the risk that the effect of restricting the sinking of the hatch 1 is affected due to the wear of the abutting joint 31 or the rotating member 41 can be reduced, and the stability of the abutting joint 31 and the rotating member 41 can be improved.

[0040] In the above solution, when the hatch 1 is closed, through the support of the limiting head 3 and the limiting seat 4, support can be provided for the hatch 1, thereby improving the problem of the hatch 1 sinking; at the same time, by setting the rotating member 41 that can rollingly cooperate with the abutting joint 31, the wear of the limiting head 3 and the limiting seat 4 can be reduced, and thus the reliability of the limiting head 3 and the limiting seat 4 can be improved.

[0041] Optionally, as Figure 2 shown, when specifically setting the abutting joint 31 and the limiting seat 4, the abutting joint 31 can be fixed on the side of the hatch 1 opposite to the hinge of the hatch 1. Such a setting can increase the moment of the limiting seat 4 to support the hatch 1 by increasing the distance between the abutting joint 31 and the hinge, and thus the anti-sinking effect of the abutting joint 31 and the limiting seat 4 can be improved.

[0042] As an alternative implementation manner, continuing to refer to Figure 2 , when specifically implementing the rotating member 41 in the embodiment of the present application, the rotating member 41 can be a pulley, which is hinged to the fixed seat 42, and during the closing process of the hatch 1, the pulley can support the abutting joint 31. In specific implementation, a rotating shaft 44 is provided on the fixed seat 42, and the pulley can be directly sleeved on the rotating shaft 44 of the limiting seat 4, or the pulley can also be hinged to the rotating shaft 44 through a bearing structure. The pulley has the characteristics of simple structure and good structural stability. By setting the rotating member 41 as a pulley, the stability and reliability of the abutting connection between the rotating member 41 and the abutting joint 31 can also be improved.

[0043] As an example, as Figure 2 shown, the pulley is hinged to the rotating shaft 44 through a bearing. By the bearing connection method, the wear of the contact surfaces of the pulley and the rotating shaft 44 is also reduced, making the pulley rotate more smoothly, and it is also convenient to lubricate the rotating pair between the pulley and the rotating shaft 44, which is beneficial to improving the overall stability of the pulley rotation and can reduce the risk of mutual wear between the abutting joint 31 and the pulley due to the pulley rotation jamming.

[0044] Optionally, continuing to refer to Figure 2, when specifically setting the pulley as the rotating member 41, a guiding groove 411 is circumferentially arranged on the outer circumference of the pulley. Specifically, the guiding groove 411 is configured to be continuously recessed towards the center of the rotating member 41 along one week on the outer side of the rotating member 41. When the abutting head 31 is in rolling cooperation with the pulley, the limiting head 3 abuts against the guiding groove 411. By arranging the guiding groove 411, when the abutting head 31 is in sliding cooperation with the rotating member 41 and slides relative to each other, the guiding groove 411 can assist in restricting the abutting head 31 from disengaging from the abutment with the rotating member 41 due to left - right shaking, thereby improving the stability of the abutment between the abutting head 31 and the rotating member 41, and further enhancing the effect of the limiting head 3 and the limiting seat 4 in cooperating to limit the sinking of the hatch 1.

[0045] It should be understood that when specifically setting the rotating member 41, the pulley is not the only form of the rotating member 41. Refer to Figure 3 , Figure 3 which is a schematic diagram of another form of the rotating member in the embodiment of the present application. As Figure 3 shown, the rotating member 41 can also be a cylindrical roller, and is rotationally connected to the limiting seat 4 through rotating shafts arranged on both sides of the cylindrical roller. During the closing process of the hatch 1, the cylindrical roller can abut against the abutting head 31 and provide a supporting force for the abutting head 31. When setting the rotating member 41 in the form of a cylindrical roller, guiding grooves can also be arranged on the cylindrical roller, which will not be elaborated here.

[0046] As an alternative implementation manner, when specifically fixing the limiting seat 4, the fixing seat 42 is fixedly connected to the housing 2. The fixing seat 42 can be fixed to the housing 2 through threaded fasteners. The method of fixing with threaded fasteners has the characteristics of high connection strength, good connection stability, and being convenient for disassembly and installation.

[0047] Continuing to refer to Figure 2 , when specifically using threaded fasteners to fix the fixing seat 42 to the housing 2, the fixing seat 42 is provided with an oblong hole 43, and the waist length of the oblong hole 43 is arranged along the height direction of the instrument. The threaded fastener passes through the oblong hole 43 and fixes the fixing seat 42 to the housing 2. By arranging the oblong hole 43 with the waist length parallel to the height direction of the instrument, it is convenient to adjust the position of the limiting seat 4 in the height direction of the instrument when installing and fixing the limiting seat 4, and further better match with the abutting head 31, improving the accuracy of the abutting cooperation between the abutting head 31 and the limiting seat 4.

[0048] As an alternative implementation manner, referring to Figure 1 as well as Figure 2, when specifically fixing the limit seat 4, the limit seat 4 is fixed to the side of the housing 2 facing away from the hatch 1, that is, the fixed seat 42 is fixed to the side of the housing 2 of the instrument facing away from the hatch 1. And an insertion hole 21 opposite to the limit seat 4 is provided on the hatch 1. When the hatch 1 is closed, the limit head 3 can pass through the limit hole and abut against the rotating member 41. When specifically fixing, screw posts can be provided on the side of the housing 2 facing away from the hatch 1, and the screw posts are used to fix and support the fixed seat 42. Fixing the limit seat 4 to the side of the housing 2 facing away from the hatch 1 can shield the structure of the limit seat 4 by the housing 2, thereby improving the cleanliness and aesthetics of the outer surface of the housing 2.

[0049] As an alternative embodiment, when specifically setting the limit head 3, the limit head 3 further includes a connecting portion 32. The connecting portion 32 is fixed to the hatch 1, and the abutting head 31 is fixedly connected to the connecting portion 32, so as to realize that the abutting head 31 is fixed to the hatch 1 through the connecting portion 32. By providing the connecting portion 32, the stability of the fixed connection between the abutting head 31 and the hatch 1 can be improved, and further the stability of the abutting between the abutting head 31 and the limit seat 4 can be improved.

[0050] Optionally, when specifically fixing the connecting portion 32 to the hatch 1, a threaded fastener can be used for connection. Using threaded fastening for fixed connection facilitates the installation and disassembly of the fixed seat 42.

[0051] Optionally, when specifically setting the abutting head 31 and the connecting portion 32, the abutting head 31 and the connecting portion 32 can be integrally formed. For example Figure 2 as shown, the abutting head 31 and the connecting portion 32 are formed by bending a whole piece of base material. With this setting, the connection stability between the abutting head 31 and the connecting portion 32 is good, and the production efficiency of the abutting head 31 and the connecting portion 32 can also be improved.

[0052] Refer to Figure 1 and Figure 4 , as an alternative embodiment, Figure 4Schematic diagram of the snap-fit ​​assembly in the embodiment of the present application. The hatch assembly provided in the embodiment of the present application may also include a snap-fit ​​assembly. Specifically, the snap-fit ​​assembly includes a first snap-fit ​​member 5 and a second snap-fit ​​member 6, and the first snap-fit ​​member 5 and the second snap-fit ​​member 6 are two parts that match and snap together. Specifically, the first snap-fit ​​member 5 has a protrusion 51, and the second snap-fit ​​member 6 has a recess 61 that matches the protrusion 51. The first snap-fit ​​member 5 is fixed to the hatch 1, and the second snap-fit ​​member 6 is fixed to the shell 2. When the hatch 1 is closed, the first snap-fit ​​member 5 and the second snap-fit ​​member 6 can snap together, thereby limiting the opening of the hatch 1. When the hatch 1 is closed, the abutment head 31 abuts against the rotating member 41 to limit the sinking of the hatch 1. However, after the hatch 1 is closed, the hatch 1 may be opened abnormally due to vibration, and the abutment head 31 may be out of contact with the rotating member 41, thereby losing the function of limiting the sinking of the hatch 1. By providing a snap-fit ​​assembly, the risk of abnormal opening of the hatch 1 due to vibration after the hatch 1 is closed can be reduced, thereby improving the stability of the abutment between the abutment head 31 and the rotating member 41 to limit the sinking of the hatch 1.

[0053] Optionally, when the first fastening member 5 and the second fastening member 6 are specifically provided, the first fastening member 5 and the second fastening member 6 may be fastened by magnetic attraction, or may be fastened by an elastic mechanism provided on the first fastening member 5 or the second fastening member 6. By adopting the magnetic attraction fastening or elastic mechanism fastening method, when the cabin door 1 needs to be opened, the fastening of the first fastening member 5 and the second fastening member 6 can be released by pulling hard, which has good convenience.

[0054] Optionally, when the buckling assembly is specifically provided, the second buckling assembly can be fixed to the side of the shell 2 away from the shell 2, and a lock hole 22 is provided on the shell 2, and the recess 61 of the second buckling member 6 is located in the lock hole 22. When the cabin door 1 is closed, the protrusion 51 of the first buckling member 5 can penetrate the lock hole 22 and buckle with the second buckling member 6. This arrangement is similar to arranging the fixing seat 42 of the limiting seat 4 on the side of the shell 2 away from the cabin door 1, and can also improve the neatness and aesthetics of the appearance of the shell 2.

[0055] Optionally, when specifically fixing the first fastening member 5 and the second fastening member 6, the first fastening member 5 can be fixed to the door 1 by a threaded fastener, and the second fastening member 6 can be fixed to the housing 2 by a threaded fastener. The use of threaded fasteners for fixing has the advantages of stable connection and easy disassembly.

[0056] As a possible implementation, continue to refer to Figure 2, the hatch assembly may further include a photoelectric sensor 7 for detecting the abutting head 31. The photoelectric sensor 7 is disposed on the housing 2, specifically on the side of the housing 2 facing away from the hatch 1. When the hatch 1 is closed, the abutting head 31 passes through the insertion hole 21 and abuts against the limit seat 4. At this time, the photoelectric sensor 7 can sense that the abutting head 31 has reached the position where it abuts against the limit seat 4 and emits a signal. By means of the photoelectric sensor 7, it is convenient to judge whether the hatch 1 is tightly closed and whether the hatch 1 is abnormally opened during the operation of the instrument. Disposing the photoelectric sensor 7 on the side of the housing 2 facing away from the hatch 1 can shield the photoelectric sensor 7 by the housing 2, improving the neatness and aesthetics of the outer surface of the housing 2.

[0057] Optionally, when specifically setting the photoelectric sensor 7, the photoelectric sensor 7 is provided with a notch, and the notch faces the rotating member 41. When the hatch 1 is closed, the notch can accommodate a part of the abutting head 31. By providing the photoelectric sensor 7 with a notch, the transmitting end and the receiving end of the photoelectric sensor 7 are integrated into one body. On the one hand, it is convenient for the installation and disassembly of the photoelectric sensing; on the other hand, the integrated transmitting end and receiving end are beneficial to improving the stability of the relative positions of the transmitting end and the receiving end, and can reduce the risk of the photoelectric sensor 7 failing due to the movement of the transmitting end or the receiving end.

[0058] An embodiment of the present application also provides a gene sequencer, which includes: a gene sequencer body, and a hatch assembly as described in any one of the above disposed on the gene sequencer body.

[0059] For the above gene sequencer, when the hatch is closed, through the support of the limit head and the limit seat, support can be provided for the hatch, thereby improving the problem of hatch sinking; at the same time, by providing a rotating member that can slidably cooperate with the abutting head, the wear of the limit head and the limit seat can be reduced, thereby improving the reliability of the limit head and the limit seat.

[0060] One or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification shall be included within the protection scope of this disclosure.

[0061] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. A door assembly, comprising a door and a shell cooperating with the door, characterized in that: Also includes: Limit head and limit seat; among which: The limit head includes an abutment head fixedly connected to the cabin door; The limit seat includes a fixed seat and a rotating member, wherein the fixed seat is fixed on the shell, the rotating member is connected to the fixed seat, and the rotating member is rotatable and used for rolling cooperation with the abutment head; When the hatch is closed, the abutment head may abut against the rotating member and support the hatch.

2. The door assembly according to claim 1, characterized in that: The rotating member is a pulley, and the pulley is hinged to the fixing seat.

3. The door assembly according to claim 2, characterized in that: The outer ring of the pulley is circumferentially provided with a guide groove; When the abutment head and the pulley are in rolling cooperation, the limiting head abuts against the guide groove.

4. The door assembly according to claim 1, characterized in that: The fixing seat is fixed to the housing by a threaded fastener; The fixing seat is provided with an oblong hole, the waist length of the oblong hole is along the height direction of the instrument, and the threaded fastener passes through the oblong hole and fixes the fixing seat to the shell.

5. The door assembly according to claim 1, characterized in that: The limit head also includes a connecting portion; The abutment head is fixed to the cabin door via the connection portion.

6. The door assembly according to any one of claims 1 to 5, characterized in that: The limiting seat is fixed to a side of the shell facing away from the cabin door; The door is provided with an insertion hole opposite to the limiting seat. When the door is closed, the limiting head passes through the insertion hole and abuts against the rotating member.

7. The door assembly according to claim 6, characterized in that: The hatch assembly further includes a photoelectric sensor for detecting the abutment head, and the photoelectric sensor is disposed on the shell.

8. The door assembly according to claim 7, characterized in that: The photoelectric sensor is provided with a notch, the notch faces the rotating member and is used to accommodate part of the abutment head.

9. The door assembly according to claim 6, characterized in that: The hatch door assembly also includes a buckle assembly; The fastening assembly includes a first fastening component and a second fastening component, wherein the first fastening component is fixed to the cabin door, and the second fastening component is fixed to the shell; when the cabin door is closed, the first fastening component and the second fastening component are fastened to each other.

10. A gene sequencer, characterized in that: include: A gene sequencer body, and a hatch assembly as claimed in any one of claims 1 to 9 arranged on the gene sequencer body.