Grid dismounting structure and mobile C-arm X-ray machine

Abstract

The application relates to a grid dismounting structure and a mobile C-shaped arm X-ray machine, which comprises a shell and a grid, the shell is provided with a fixing shaft, the grid is detachably connected to the shell, a hanging piece is arranged at a first end of the grid, the hanging piece can be hung on the fixing shaft, so that the grid is rotatably connected to the shell with the fixing shaft as the rotating center, a fixing piece is arranged at a second end of the grid, and the fixing piece is used for controlling the locking / unlocking of the grid on the shell. Thus, the grid can be dismounted on the shell, the structure of the grid dismounting is simplified, and the grid is protected from falling.

Description

Technical Field

[0001] This invention belongs to the technical field of filter grid disassembly, and in particular relates to a filter grid disassembly and assembly structure and a mobile C-arm X-ray machine. Background Technology

[0002] According to industry standards for mobile C-arm X-ray machines, when a mobile C-arm X-ray machine is declared to be suitable for pediatric examinations, the anti-scattering grid used in it should be removable and installable without tools.

[0003] Among the components, the wire mesh screen poses a risk of falling during removal due to its own weight, and since wire mesh screens are generally quite fragile, they are easily damaged upon falling. Furthermore, wire mesh screens are high-value components, resulting in high maintenance and replacement costs. To meet regulatory requirements for pediatric examinations using mobile C-arm X-ray machines and to reduce the risk of damage from falling wire mesh screens, it is necessary to design a wire mesh screen removal and installation structure for use in mobile C-arm X-ray machines. Currently, existing quick-release and installation structures for wire mesh screens in mobile C-arm X-ray machines either lack a fall-prevention feature or require an additional fall-prevention design, leading to a complex and redundant structure for the wire mesh screen. Summary of the Invention

[0004] In view of this, it is necessary to provide a filter grid disassembly and assembly structure and a mobile C-arm X-ray machine for solving the above-mentioned technical problems.

[0005] A filter grid assembly / disassembly structure, comprising:

[0006] The housing is equipped with a fixed shaft;

[0007] A filter grid is detachably connected to the housing. A first end of the filter grid is provided with a hanger that can be attached to the fixed shaft so that the filter grid can be rotatably connected to the housing with the fixed shaft as the rotation center. A second end of the filter grid is provided with a fixing member that is used to control the locking / unlocking of the filter grid on the housing.

[0008] Understandably, the above-described structural design allows the filter grid to be attached to the fixed shaft of the housing when the user is assembling or disassembling it. The filter grid can then be detached or assembled from the housing using the fixing parts on the filter grid. This satisfies the regulatory requirement of assembling or disassembling the filter grid without the use of tools. During this process, since the attachments and fixing parts that control the filter grid to be locked onto the housing are arranged at both ends of the filter grid, the structure for assembling or disassembling the filter grid is simplified. Furthermore, when the user manually disassembles the filter grid, their hands are always positioned below and against the filter grid, providing protection against it falling.

[0009] In one embodiment, when the filter grid is rotatably connected to the housing and the filter grid is in the open state, the first end of the filter grid can abut against the housing to limit the hanger to the fixed shaft, so that the filter grid is at the upper limit of the housing.

[0010] Understandably, with the above structural design, when the user removes the filter grid, even after the user's hand is completely removed from the filter grid, the filter grid can still be positioned at the upper limit of the housing. This can play a role in preventing the filter grid from falling off and ensure that the filter grid will not fall off the housing under the action of gravity.

[0011] In one embodiment, the housing includes a housing body and a mounting plate, the mounting plate being mounted on the housing body;

[0012] The fixed shaft is fixedly mounted on the mounting plate, and the filter grid can be accommodated in the housing body and abuts against the mounting plate.

[0013] It is understandable that, with the above-described structural design, when the filter grid is assembled onto the housing, the filter grid can be housed within the housing body, thus the housing body can protect the filter grid and prevent it from being damaged.

[0014] In one embodiment, the hanger has a bend that allows it to abut against the outer circumferential surface of the fixed shaft.

[0015] Understandably, the hook, through the abutment between the bent part and the outer circumference of the fixed shaft, enables the filter grid to be rotatably connected to the housing via the hanger, thus meeting the usage requirements of preventing the filter grid from falling off the housing.

[0016] In one embodiment, the hanger is configured as an elastic structure, capable of elastic deformation, and the elastically deformed hanger can detach from the fixed shaft so that the filter grid can be removed from the housing.

[0017] Understandably, with the above structural design, the user can only detach the filter grid from the fixed shaft by pulling down the filter grid and causing the hanging part to undergo elastic deformation, thus meeting the usage requirement of completely removing the filter grid from the housing.

[0018] In one embodiment, a fixing fitting is provided on the housing;

[0019] When the filter grid rotates around the fixed axis and drives the fixing member to flip toward the housing, the fixing member can pass through the fixing fitting under the drive of the filter grid and abut against the fixing fitting to lock the filter grid.

[0020] Understandably, through the above structural setup, users can control the engagement between the fixing component and the fixed mating component by driving the fixing component to slide on the filter grid, thereby achieving the purpose of controlling the locking / unlocking of the filter grid on the housing.

[0021] In one embodiment, along the sliding direction of the fastener as it slides on the filter grid, there is positional interference between the fastener and the fixed mating member, and the fastener is configured to slide relative to the filter grid in response to the pushing of the positional interference.

[0022] It is understandable that, through the above structural setup, the positional interference between the fixing component and the fixed mating component is utilized to enable the filter grid to automatically avoid the fixed mating component during the process of closing the housing, so that the fixing component can pass through the fixed mating component. This facilitates the subsequent control of locking the filter grid on the housing.

[0023] In one embodiment, the filter grid disassembly and assembly structure further includes an elastic element disposed on the sliding path of the fixing member when it slides on the filter grid, for pushing the fixing member to reset so that the fixing member after passing the fixing engagement member abuts against the fixing engagement member.

[0024] It is understandable that by using the elastic element to push the fixed element, the fixed element can be driven to abut against the fixed element after passing through the fixed mating part, and the filter grid can be automatically locked after being covered by the housing. This facilitates the assembly of the filter grid on the housing.

[0025] In one embodiment, an ejector element is movably connected to the housing;

[0026] When the retaining member releases the locking of the filter grid on the housing, the ejector element can push the filter grid away from the housing to drive the filter grid to open from the housing.

[0027] Understandably, with the above-described structure, after the user releases the filter grid from the housing, the user can push the filter grid with the ejector element to automatically expose an opening in the housing, thereby driving the filter grid to open from the housing, which facilitates the user's disassembly of the filter grid.

[0028] This application also provides a mobile C-arm X-ray machine, including the above-described filter grid disassembly and assembly structure.

[0029] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0030] The filter grid assembly / disassembly structure and mobile C-arm X-ray machine claimed in this application allow the user to assemble and disassemble the filter grid by having the filter grid drive the hanger to engage with the fixed shaft of the housing. Then, the filter grid is assembled and disassembled using the fixing parts on the filter grid. This satisfies the regulatory requirement of assembling and disassembling the filter grid without the use of tools. In this process, since the hanger and fixing parts that control the filter grid to lock onto the housing are arranged at both ends of the filter grid, the structure of the filter grid assembly / disassembly is simplified. Furthermore, when the user manually disassembles the filter grid, the user's hand is always located below the filter grid and against it, which provides protection against it falling. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the filter grid assembly / disassembly structure provided in some embodiments of this application.

[0033] Figure 2 for Figure 1 AA sectional view.

[0034] Figure 3 for Figure 2 Enlarged view of the middle P section.

[0035] Figure 4 for Figure 2 Enlarged view of the middle Q section.

[0036] Figure 5 This is a broken view from another perspective of the filter grid assembly / disassembly structure provided in some embodiments of this application.

[0037] Figure 6 for Figure 5 Enlarged view of the middle R section.

[0038] Figure 7 This is an exploded view of the shell in this application.

[0039] Figure 8 This is a schematic diagram of the structure of the hangers and fasteners assembled on the filter grid in this application.

[0040] Figure 9 This is an exploded view of the hanger being assembled on the filter grid in this application.

[0041] Figure 10 This is an exploded view of the fastener being assembled on the filter grid in this application.

[0042] Reference numerals: 100, Filter grid assembly / disassembly structure; 10, Housing; 11, Fixed shaft; 111, Outer peripheral surface; 12, Housing body; 13, Mounting plate; 131, Fixed seat; 132, Screw; 14, Fixed mating part; 141, Second guide surface; 15, Ejector element; 20, Filter grid; 201, First end; 202, Second end; 22, Guide rail element; 23, Sliding plate; 231, Pulley; 30, Hanger; 301, Contact part; 31, Bending part; 32, Pressure strip; 33, Fixing screw; 40, Fixing part; 41, First guide surface; 50, Elastic element. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] It should be noted that when a component is said to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or may have an intervening component.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0046] The filter grid assembly / disassembly structure 100 claimed in this application is applied in a mobile C-arm X-ray machine, enabling the filter grid 20 to be detachably mounted on the housing 10, thereby meeting the regulatory requirement that the filter grid 20 can be disassembled and assembled without tools when the mobile C-arm X-ray machine is used for pediatric examinations.

[0047] like Figures 1 to 3As shown, the filter grid assembly / disassembly structure 100 provided in some embodiments of this application includes a housing 10 and a filter grid 20. A fixed shaft 11 is provided on the housing 10. The filter grid 20 is detachably connected to the housing 10. A hanger 30 is provided at the first end 201 of the filter grid 20, which can be hooked onto the fixed shaft 11, allowing the filter grid 20 to be rotatably connected to the housing 10 with the fixed shaft 11 as its rotation center. A fixing member 40 is provided at the second end 202 of the filter grid 20, which controls the locking / unlocking of the filter grid 20 on the housing 10. In other words, the filter grid 20 in this embodiment can be assembled and disassembled on the housing 10 by means of the hanger 30 and fixing member 40 arranged at both ends. Here, the hanger 30 and fixing member 40 are arranged at two opposite ends of the filter grid 20.

[0048] As can be seen from the above, when the user disassembles or assembles the filter grid 20, the filter grid 20 can drive the hanging piece 30 to be snapped into the fixed shaft 11 of the housing 10, and then the fixing piece 40 on the filter grid 20 is used to realize the disassembly and assembly of the filter grid 20 on the housing 10. This can meet the regulatory requirements for disassembly and assembly of the filter grid 20 without the use of tools. In this process, since the hanging piece 30 and the fixing piece 40 that control the filter grid 20 to be locked on the housing 10 are arranged at both ends of the filter grid 20, this simplifies the structure required for disassembly and assembly of the filter grid 20. On the other hand, when the user manually disassembles the filter grid 20, the user's hand is always below the filter grid 20 and against the filter grid 20, which plays a protective role against falling.

[0049] In some embodiments, such as Figure 3 , Figure 7 As shown, the housing 10 includes a housing body 12 and a mounting plate 13. The mounting plate 13 is mounted on the housing body 12, allowing the housing body 12 to enclose the mounting plate 13, thus improving the overall aesthetics of the housing 10. Here, the fixing shaft 11 is fixedly mounted on the mounting plate 13, and the mounting plate 13 is housed within the housing body 12. It should be noted that the mounting plate 13 is annular, and specifically, the mounting plate 13 can be configured as a sheet metal part, allowing the housing 10 to use the mounting plate 13 to support the filter grid 20.

[0050] In some embodiments, such as Figure 7 As shown, a mounting base 131 is fixedly connected to the mounting plate 13, and a fixing shaft 11 is mounted on the mounting base 131, thus achieving the assembly connection of the fixing shaft 11 on the mounting plate 13. Here, the mounting base 131 is attached to the mounting plate 13 and can be fixed with screws 132.

[0051] In some embodiments, such as Figures 5 to 7As shown, the housing 10 also includes a fixing member 14, which is fixedly mounted on the mounting plate 13. When the filter grid 20 rotates around the fixed shaft 11, causing the fixing member 40 to flip towards the housing 10, the fixing member 40, driven by the filter grid 20, passes through the fixing member 14 and abuts against it, thereby locking the filter grid 20. This allows the fixing member 40 to be locked on the housing 10 through its abutment with the fixing member 14, achieving the purpose of locking or unlocking the filter grid 20 on the housing 10. Here, there are two fixing members 14, each corresponding to one fixing member 40.

[0052] In some embodiments, such as Figure 4 , Figure 7 As shown, an ejector element 15 is movably connected to the housing 10. When the fixing member 40 releases the lock on the filter grid 20 to the housing 10, the ejector element 15 can push the filter grid 20 away from the housing 10. Thus, after the user releases the lock on the filter grid 20 to the housing 10, the ejector element 15 can push the filter grid 20, causing it to automatically protrude from the housing 10, allowing the fixing member 40 to disengage from the fixing member 14. This facilitates the user's disassembly of the filter grid 20. Here, the ejector element 15 is located on the side of the housing 10 where the fixing member 14 is mounted, and a spring (not shown) is pre-compressed between the ejector element 15 and the housing 10 to meet the requirement of the ejector element 15 automatically pushing the filter grid 20.

[0053] In some embodiments, such as Figure 8 , Figure 10 As shown, a guide rail element 22 is fixedly connected to the filter grid 20, and a sliding plate 23 is slidably connected within the guide rail element 22. A fixing member 40 is fixedly mounted on the sliding plate 23, allowing the filter grid 20 to be supported by the sliding plate 23. The sliding engagement between the sliding plate 23 and the guide rail element 22 guides the sliding of the sliding plate 23 on the filter grid 20. In other words, the sliding plate 23 can drive the fixing member 40 to move synchronously to meet the usage requirements of engaging with the corresponding fixing member 14 on the mounting plate 13. Here, a lever 231 is provided on the sliding plate 23, penetrating the filter grid 20. This allows the user to release the fixing member 40 from locking the filter grid 20 by sliding the sliding plate 23 on the filter grid 20 via the lever 231.

[0054] In some embodiments, such as Figure 2 , Figure 3As shown, when the filter grid 20 is rotatably connected to the housing 10 and is in the open state, the first end 201 of the filter grid 20 can abut against the housing 10, specifically against the edge of the upper shell body 12 of the housing 10, to limit the hanger 30 to the fixed shaft 11, so that the filter grid 20 is limited on the housing 10. That is to say, the rotation angle of the filter grid 20 when it is rotatably connected to the housing 10 can be limited by the abutment between the filter grid 20 and the housing 10. At this time, the abutment between the hanger 30 and the fixed shaft 11 can be used to realize the assembly limitation of the filter grid 20 on the housing 10. This allows the filter grid 20 to be assembled and limited on the housing 10 even after the user's hand is completely removed from the filter grid 20 when disassembling it. This provides anti-fall protection for the filter grid 20 and ensures that the filter grid 20 will not fall off the housing 10 under the action of gravity.

[0055] In some embodiments, such as Figure 3 As shown, the hanger 30 has a bent portion 31, which allows it to abut against the outer peripheral surface 111 of the fixed shaft 11. When the bent portion 31 abuts against the outer peripheral surface 111, two contact portions 301 are formed between the bent portion 31 and the outer peripheral surface 111, achieving abutment between the hanger 30 and the fixed shaft 11. This allows for the assembly and positioning of the filter grid 20 on the housing 10, meeting the requirement for preventing the filter grid 20 from falling off the housing 10. Here, two hangers 30 are configured, allowing both hangers 30 to simultaneously abut against the corresponding fixed shafts 11 on the housing 10. Of course, in other embodiments, the number of hangers 30 can also be configured as one, three, or even more.

[0056] In some embodiments, such as Figure 9 As shown, the portion of the hanger 30 that abuts against the filter grid 20 is pressed and limited by a pressure strip 32. The pressure strip 32 and the filter grid 20 can be fixed together using two fixing screws 33. This improves the stability of the hanger 30 during assembly onto the filter grid 20 and also facilitates its assembly. Of course, in other embodiments, the hanger 30 can also be fixed to the filter grid 20 by welding, riveting, or other methods.

[0057] In some embodiments, the hanger 30 is configured as an elastic structure, capable of elastic deformation, and the elastically deformed hanger 30 can detach from the fixed shaft 11, allowing the filter grid 20 to be removed from the housing 10. That is, the user can only detach the hanger 30 from the fixed shaft 11 by pulling down the filter grid 20 and causing the hanger 30 to elastically deform, thus satisfying the requirement for complete removal of the filter grid 20 from the housing 10. Here, the hanger 30 is configured as a stainless steel plate, aluminum alloy plate, or other plate with a certain degree of elasticity.

[0058] In some embodiments, such as Figure 5 , Figure 6 As shown, along the sliding direction of the fixing member 40 as it slides on the filter grid 20, there is positional interference between the fixing member 40 and the fixed mating member 14. The fixing member 40 is configured to slide relative to the filter grid 20 in response to the pushing caused by the positional interference, so that the fixing member 40 can pass through the fixed mating member 14. In other words, this embodiment utilizes the positional interference between the fixing member 40 and the fixed mating member 14 when the filter grid 20 rotates with it, so that the filter grid 20 can automatically avoid the fixed mating member 14 during the process of closing the housing 10, allowing the fixing member 40 to pass through the fixed mating member 14. This facilitates subsequent control of locking the filter grid 20 on the housing 10. Here, the number of fixing members 40 is configured to be two, and both fixing members 40 can simultaneously engage with the corresponding fixed mating members 14 on the housing 10 to achieve locking / unlocking of the filter grid 20 on the housing 10. Of course, in other embodiments, the number of fixing members 40 can also be one, three, four, or even more, which will not be elaborated here.

[0059] In some embodiments, such as Figure 6 As shown, a first guide surface 41 is formed on the fixing member 40, and a second guide surface 141 is formed on the fixing mating member 14. Positional interference can be formed between the first guide surface 41 and the second guide surface 141, allowing the fixing member 40 to move on the filter grid 20 under the guidance of the second guide surface 141. Here, the first guide surface 41 is configured as an arc-shaped surface, and the second guide surface 141 is configured as an inclined surface. Of course, in other embodiments, the first guide surface 41 can also be configured as an inclined surface, and the second guide surface 141 as an arc-shaped surface.

[0060] In some embodiments, such as Figure 10 As shown, the filter grid assembly / disassembly structure 100 also includes an elastic element 50. The elastic element 50 is disposed on the sliding path of the fixing member 40 when it slides on the filter grid 20, and is used to push the fixing member 40 back to its original position so that the fixing member 40 can automatically abut against the fixing member 14 after passing through the fixing member 14. In this way, by using the elastic element 50 to push the fixing member 40 elastically, the filter grid 20 can be automatically locked after it is closed onto the housing, so as to facilitate the assembly of the filter grid 20 on the housing 10. Here, the elastic element 50 is disposed in the guide rail element 22 and abuts against the guide rail element 22 and the sliding plate 23 respectively. Specifically, the elastic element 50 can be configured as a spring, a rubber sleeve, or other accessories with high elasticity.

[0061] As can be seen from the above, when the user needs to assemble the filter grid 20 onto the housing 10, the user's hand can drive the hanging part 30 on the filter grid 20 to align with the fixed shaft 11 on the housing 10 and snap it in, so that the bent part 31 on the hanging part 30 abuts against the outer peripheral surface 111 of the fixed shaft 11; then, push the filter grid 20 to rotate relative to the housing 10. During this process, the fixing part 40 first compresses the elastic part 50 under the push of the fixing fitting part 14 and slides on the filter grid 20 to avoid the fixing fitting part 14. After the fixing part 40 passes the fixing fitting part 14, it loses the force of the fixing fitting part 14, so that the compressed elastic part 50 pushes the fixing part 40 back to its original position, so that the fixing part 40 abuts against the fixing fitting part 14, and the filter grid 20 is locked on the housing 10. When it is necessary to remove the filter grid 20 from the housing 10, the user can use the lever 231 to drive the sliding plate 23 to move, so that the fixing member 40 is disengaged from the fixing fitting member 14 under the action of the sliding plate 23. At the same time, the filter grid 20 will be disengaged from the housing 10 under the push of the ejector element 15. After the filter grid 20 is flipped down to the maximum angle, the hanging member 30 can be disengaged from the fixed shaft 11 by pulling down the filter grid 20, so that the bending part 31 on the hanging member 30 is deformed on the fixed shaft 11, thus achieving the purpose of removing the filter grid 20 as a whole from the housing 10.

[0062] In addition, this application also provides a mobile C-arm X-ray machine, including the above-described filter grid disassembly and assembly structure 100.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any appropriate changes and variations made to the above embodiments within the essential spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A filter grid assembly / disassembly structure, characterized in that, The filter grid assembly / disassembly structure (100) includes: The housing (10) is provided with a fixed shaft (11); A filter grid (20) is detachably connected to the housing (10). A hanger (30) is provided at the first end (201) of the filter grid (20). The hanger (30) can be attached to the fixed shaft (11) so that the filter grid (20) can be rotatably connected to the housing (10) with the fixed shaft (11) as the rotation center. A fixing member (40) is provided at the second end (202) of the filter grid (20). The fixing member (40) is used to control the locking / unlocking of the filter grid (20) on the housing (10). The pendant (30) has a bent portion (31), and the pendant (30) can abut against the outer peripheral surface (111) of the fixed shaft (11) through the bent portion (31); and when the bent portion (31) abuts against the outer peripheral surface (111) of the fixed shaft (11), there are two contact portions (301) between the bent portion (31) and the outer peripheral surface (111). The hanger (30) is configured as an elastic structure, the hanger (30) is capable of elastic deformation, and the elastically deformed hanger (30) can detach from the fixed shaft (11) so that the filter grid (20) can be removed from the housing (10).

2. The filter grid assembly / disassembly structure according to claim 1, characterized in that, When the filter grid (20) is rotatably connected to the housing (10) and the filter grid (20) is in the open state, the first end (201) of the filter grid (20) can abut against the housing (10) to limit the hanger (30) to the fixed shaft (11) so that the filter grid (20) is upper limited on the housing (10).

3. The filter grid assembly / disassembly structure according to claim 2, characterized in that, The housing (10) includes a housing body (12) and a mounting plate (13), the mounting plate (13) being mounted on the housing body (12); The fixed shaft (11) is fixedly mounted on the mounting plate (13), and the filter grid (20) can be accommodated in the housing body (12) and abut against the mounting plate (13).

4. The filter grid assembly / disassembly structure according to claim 1, characterized in that, The housing (10) is provided with a fixing fitting (14); When the filter grid (20) rotates around the fixed shaft (11) and drives the fixing member (40) to rotate toward the housing (10), the fixing member (40) can pass through the fixing fitting (14) and abut against the fixing fitting (14) under the drive of the filter grid (20) to lock the filter grid (20).

5. The filter grid disassembly and assembly structure according to claim 4, characterized in that, Along the sliding direction of the fixing member (40) as it slides on the filter grid (20), there is positional interference between the fixing member (40) and the fixing mating member (14), and the fixing member (40) is configured to slide relative to the filter grid (20) in response to the pushing of the positional interference.

6. The filter grid assembly / disassembly structure according to claim 5, characterized in that, The filter grid assembly / disassembly structure (100) further includes an elastic element (50), which is disposed on the sliding path of the fixing element (40) when it slides on the filter grid (20), and is used to push the fixing element (40) to reset so that the fixing element (40) after passing the fixing fitting (14) abuts against the fixing fitting (14).

7. The filter grid assembly / disassembly structure according to claim 1, characterized in that, An ejector element (15) is movably connected to the housing (10); When the fastener (40) releases the lock of the filter grid (20) on the housing (10), the ejector element (15) can push the filter grid (20) off the housing (10) to drive the filter grid (20) to open off the housing (10).

8. A mobile C-arm X-ray machine, characterized in that, Includes the filter grid disassembly structure (100) as described in any one of claims 1 to 7.

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