TWI878965B - Buckle device and chassis - Google Patents

Abstract

This application provides a buckle device and a chassis, which includes a first body, a buckle, and a sliding member. The first body is configured to be fixed within a box. The buckle is configured to be connected to a functional component. The sliding member is slidably connected to the first body. The buckle is rotationally connected to the first body and supported against the sliding member, and the buckle is configured to drive the sliding member to slide during rotation, and the buckle is engaged and connected to the first body when the sliding member is located at a first set position protruding outside the box. When an area near a functional component needs to be avoided, rotate the buckle and drive the functional component to rotate to expose the avoidance space. The functional component does not need to be disassembled from the chassis, avoiding the problem of missing the functional components when reassembling the chassis after avoidance.

Description

Snap-fit device and chassis

The present application embodiment relates to the field of server technology, and more particularly to a buckling device and a chassis.

In different servers, there are many components connected in the chassis. These components are fixed in the chassis by snap-fit connection or thread connection. When a certain component needs to be repaired or replaced, another component needs to be removed to leave space for the repair or replacement operation. However, when the operation is completed, it is easy to forget to install the removed component into the chassis.

In view of this, the present application provides a snap-fit device for connecting a functional component to a chassis to solve the problem of easily forgetting to install the functional component into the chassis.

In a first aspect, the present application provides a snap-fit device, which includes a first main body, a buckle and a sliding member. The first main body is configured to be fixed in a box. The buckle is configured to be connected to a functional element. The sliding member is slidably connected to the first main body. The buckle is rotatably connected to the first main body and abuts against the sliding member, so that the buckle is configured to drive the sliding member to slide when rotating, and the buckle is snap-fitted and connected to the first main body when the sliding member is in a first setting position protruding outside the box.

The above-mentioned snap-fitting device is connected and fixed with the functional element by means of a snap-fitting part, and is rotatably connected to the first main body. When the area near the functional element needs to be avoided, the snap-fitting part is rotated to drive the functional element to rotate to expose the avoidance space. The functional element does not need to be removed from the case, thereby avoiding the problem of missing functional elements when the case is reassembled after the avoidance. The snap-fitting part is snap-fitted and connected to the first main body, so that the snap-fitting device fixes the functional element to stably expose the avoidance space, and the sliding part extends out of the case and is visually visible outside the case to remind the functional element to be in the avoidance state.

In a possible implementation, the buckling device further includes a limiter, one of the first body and the sliding member is connected to fix the limiter, and the other is provided with a slide groove, and the limiter is slidably disposed in the slide groove. The buckling device further includes a rotating shaft, the first body and the buckle member are rotatably connected via the rotating shaft, and the rotating shaft is offset from the sliding path of the sliding member.

Obviously, in the above-mentioned implementation, the limiter and the slide groove are easy to manufacture, simple in structure, and realize the sliding connection between the sliding member and the first main body. The rotating shaft realizes the rotation connection between the first main body and the buckle. The rotating shaft and the slide groove are offset, so that the buckle and the sliding member can be conveniently connected to the first main body respectively.

In a possible implementation, the slide groove includes a first groove and a second groove, the orthographic projection of the first groove on the first body is located within the orthographic projection of the second groove on the first body, and the first groove is closer to the first body than the second groove. The stopper includes a connecting portion and a stopper, the connecting portion is configured to be connected to the first body through the first groove and the second groove, and the stopper is located in the second groove and stops at a side of the slide member away from the first body.

Obviously, in the above implementation, the slide groove is divided into a first groove and a second groove of different sizes, and the limit member is correspondingly provided with a connecting portion and a limit member portion, the structure is simple, and it is easy to realize that the limit member stops the sliding member from moving away from one side of the first main body through the slide groove.

In a possible implementation, there are multiple slide grooves, which are spaced apart on the sliding member, and there are multiple limit members, each of which is connected to the first body and slidably disposed in a slide groove.

Obviously, in the above-mentioned implementation method, a plurality of slide grooves are arranged at intervals on the sliding member, and there is a solid structure between adjacent slide grooves, thereby improving the strength of the sliding member.

In a possible implementation, the buckle is provided with a protruding supporting portion, the supporting portion is spaced apart from the rotating shaft, a first arc surface is provided on the peripheral side of the supporting portion, a second arc surface is provided on the peripheral wall of the sliding member, and the first arc surface is in contact with and tangent to the second arc surface.

Obviously, in the above-mentioned implementation method, the supporting part supports the outer peripheral wall of the sliding member and slides relatively, so that the buckle rotates to drive the sliding member to slide relative to the first main body, and the outer periphery of the sliding member contacts the outer periphery of the supporting part, which is easy to achieve and improves the installation convenience of the supporting part and the sliding member.

In a possible implementation, the sliding member is located between the first main body and the buckle member, the buckle member is provided with a buckle hole, and the first main body is provided with a convex buckle, which is buckled and connected to the buckle hole.

Obviously, in the above-mentioned implementation method, the button hole is arranged on the buckle, and the protrusion is arranged on the first main body. The position of the protrusion is fixed and will not move with the rotation of the buckle. There is no need to leave space between the sliding member and the buckle to avoid the protrusion, thereby reducing the distance between the sliding member, the buckle and the first main body.

In a second aspect, the present application further proposes a chassis, which includes a case, a functional element and a snap-fit device, wherein a first main body is fixed in the case. The snap-fit device includes a first main body, a latch and a sliding member. The first main body is configured to be fixed in a case. The latch is configured to connect a functional element. The sliding member is slidably connected to the first main body. The latch is rotatably connected to the first main body and abuts against the sliding member, so that the latch is configured to drive the sliding member to slide when it rotates, and the latch is snap-fitted and connected to the first main body when the sliding member is in a first set position protruding outside the case.

The above-mentioned chassis is connected and fixed with functional components by means of a snap-fit part, and is rotatably connected to the first main body. When the area near the functional component needs to be avoided, the rotating snap-fit part drives the functional component to rotate to expose the avoidance space. The functional component does not need to be removed from the chassis, thereby avoiding the problem of missing functional components when reassembling the chassis after the avoidance. The snap-fit part is snap-fitted and connected to the first main body, so that the snap-fit device fixes the functional component to stably expose the avoidance space, and the sliding part extends out of the chassis and is visually visible outside the chassis to remind the functional component to be in the avoidance state.

In a possible implementation, the chassis further includes a case cover, which is connected to the case body and presses and fixes the sliding member.

Obviously, in the above-mentioned implementation method, when the box cover is connected to the box body, the sliding member is pressed and fixed, thereby improving the position stability of the sliding member and preventing the sliding member or the buckle member from moving and damaging other structures in the box body. When the box cover is installed, the box cover moves toward the box body and applies pressure to the sliding member, so that the buckle member and the main body are released from the buckling connection. Even if the position of the buckling device is not restored first, the position of the buckling device in the box body can be restored by installing the box body at the same time, thereby avoiding the problem of discovering that the position of the buckling device is wrong after the box body is installed and reinstalling it.

In a possible implementation, when the box cover is connected to the box body, the buckle and the box cover respectively abut against two opposite ends of the sliding member. The buckle device also includes a second body, which is fixed in the box body and abuts against the buckle or the functional element to prevent the buckle from rotating.

Obviously, in the above-mentioned implementation method, the snap member and the box cover are held at two ends of the sliding member, and the snap member is held by the second main body, that is, the second main body and the box cover fixed relative to the box body are respectively held on the sliding member, so that the sliding member and the snap member are fixed at the same time, ensuring the position stability of the snap-fit device in the chassis.

In a possible implementation, the number of the first body, the sliding member and the buckle member is two respectively, and the two first bodies are fixed in the box body at intervals. The functional element is connected between the two buckles. Or the buckle device further includes a supporting member, which is connected between the two buckles and is configured to support and fix the functional element.

Obviously, in the above-mentioned implementation method, the two snap fasteners improve the strength of the snap-fit device in supporting the functional element, and improve the uniformity of the force supporting the functional element, thereby improving the position stability of the functional element and avoiding the problem of accidental damage to other components in the box due to the unstable position of the functional element.

In order to further explain the technical means and effects adopted by this application to achieve the intended application purpose, the following is combined with the attached drawings and implementation methods. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

Some embodiments of the present application provide a snap-fit device, which includes a first body, a buckle and a sliding member. The first body is configured to be fixed in a box. The buckle is configured to be connected to a functional element. The sliding member is slidably connected to the first body. The buckle is rotatably connected to the first body and abuts against the sliding member, so that the buckle is configured to drive the sliding member to slide when rotating, and the buckle is snap-fitted and connected to the first body when the sliding member is in a first setting position protruding outside the box.

The above-mentioned snap-fitting device is connected and fixed with the functional element by means of a snap-fitting part, and is rotatably connected to the first main body. When the area near the functional element needs to be avoided, the snap-fitting part is rotated to drive the functional element to rotate to expose the avoidance space. The functional element does not need to be removed from the case, thereby avoiding the problem of missing functional elements when the case is reassembled after the avoidance. The snap-fitting part is snap-fitted and connected to the first main body, so that the snap-fitting device fixes the functional element to stably expose the avoidance space, and the sliding part extends out of the case and is visually visible outside the case to remind the functional element to be in the avoidance state.

The following is a detailed description of some implementations of the present application in conjunction with the attached drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

Please refer to FIG. 1 and FIG. 2 , an embodiment of the present application provides a case 200. The case 200 includes a case body 2001, a case cover 2003, a functional element 2005 and a snap-fit device 100. The case body 2001 is provided with an opening 2013 and a receiving cavity 2011. The opening 2013 is connected to the receiving cavity 2011, and the functional element 2005 is installed in the receiving cavity 2011 of the case body 2001 by the snap-fit device 100. The case cover 2003 is closed and connected to the opening 2013 of the case body 2001.

In one embodiment, the functional element 2005 is an air guide hood, but is not limited to this.

In one embodiment, the chassis 200 further includes a bracket 2007 and a GPU (graphics processing unit) module. The bracket 2007 is installed in the box 2001 and supports and fixes the GPU module 2009.

The functional element 2005 is mounted on the bracket 2007 by the buckling device 100 and is located on one side of the GPU module 2009. The functional element 2005 is used to guide the airflow flowing through the GPU module 2009 or other electronic control elements in the box 2001.

3 and 4 , the buckling device 100 includes a first body 10, a sliding member 30 and a buckling member 20. The first body 10 is formed on a bracket 2007.

In one embodiment, the number of the first body 10, the sliding member 30 and the buckle 20 is two, and the two first bodies 10 are respectively located at two opposite ends of the bracket 2007, but it is not limited thereto. Each first body 10, the sliding member 30 and the buckle 20 form a set. The sliding member 30 is located between the first body 10 and the buckle 20.

The buckle 20 is configured to connect the functional element 2005. The sliding member 30 is slidably connected to the first main body 10. The buckle 20 is rotatably connected to the first main body 10 and abuts against the sliding member 30. The buckle 20 is configured to drive the sliding member 30 to slide when rotating. When the sliding member 30 slides to the first setting position, the buckle 20 is buckled and connected to the first main body 10. When the sliding member 30 is in the first setting position, it protrudes outside the box 2001.

A force is applied to the functional element 2005 or the buckle 20 to rotate the buckle 20 . During the rotation of the buckle 20 , the buckle 20 is held against the sliding member 30 . The sliding member 30 is subjected to the force to slide relative to the first body 10 .

In one embodiment, the functional element 2005 and the buckle 20 are integrally formed, but not limited thereto. It can be understood that in other embodiments, the number of the first body 10, the sliding member 30 and the buckle 20 can also be one each.

The buckle device 100 is connected and fixed with the function element 2005 by the buckle 20, and is rotatably connected to the first main body 10. When the area near the function element 2005 needs to be avoided, the buckle 20 is rotated to drive the function element 2005 to rotate to expose the avoidance space, and the buckle 20 is buckled and connected to the first main body 10, so that the buckle device 100 fixes the function element 2005 to stably expose the avoidance space. The function element 2005 does not need to be disassembled from the chassis 200, thereby avoiding the problem of missing the function element 2005 when the chassis 200 is reassembled after avoiding. The sliding member 30 extends out of the box body 2001 and is visually visible outside the box body 2001 to remind the function element 2005 that it is not installed in place.

It can be understood that in other embodiments, the first main body 10 and the bracket 2007 can also be two independent structures, and the first bracket 2007 can also be directly connected to the inner wall of the box 2001.

Please refer to FIG. 5 and FIG. 6 , in one embodiment, the box cover 2003 is connected to the box body 2001 and can press and fix the sliding member 30 . When the box cover 2003 is connected to the box body 2001, the sliding member 30 is pressed and fixed, thereby improving the position stability of the sliding member 30 and preventing the sliding member 30 or the buckle member 20 from moving and damaging other structures in the box body 2001. When the box cover 2003 is installed, the box cover 2003 moves toward the box body 2001 and applies pressure to the sliding member 30, so that the buckle member 20 and the main body are released from the buckling connection. Even if the buckle device 100 is not restored to a closed state first, the position of the buckle device 100 in the box body 2001 can be restored by installing the box body 2001 at the same time, thereby avoiding the problem of finding that the position of the buckle device 100 is wrong after the box body 2001 is installed and reinstalling it.

In one embodiment, when the box cover 2003 is connected to the box body 2001, the buckle 20 and the box cover 2003 respectively abut against the opposite ends of the sliding member 30, so that the sliding member 30 is stabilized at the second set position. The buckle device 100 also includes a second body 60. The second body 60 is fixed in the box body 2001, and the second body 60 and the first body 10 are formed in one body, and the second body 60 is formed on a side wall of the bracket 2007. The first body 10 extends to one side of the second body 60, and two first bodies 10 are arranged at two ends of the second body 60. When the box cover 2003 is connected to the box body 2001, the second body 60 abuts against the buckle 20 to prevent the buckle 20 from rotating.

When the box cover 2003 is connected to the box body 2001 and the functional element 2005 is in the installed state, a stopper 2025 is provided on one side of the second main body 60. The stopper 2025 contacts the second main body 60, so that the second main body 60 stops the buckle 20 from rotating in the rotating direction of the buckle 20. When the box cover 2003 is detached from the box body 2001, the buckle 20 is rotated to make the stopper 2025 separate from the second main body 60.

The latch 20 and the box cover 2003 are abutted against the two ends of the sliding member 30, and the latch 20 is abutted by the second main body 60, that is, the second main body 60 and the box cover 2003 fixed relative to the box body 2001 are respectively abutted on the sliding member 30, so that the sliding member 30 and the latch 20 are fixed at the same time, ensuring the position stability of the snap-fit device 100 in the chassis 200.

It is understood that in other embodiments, the functional element 2005 may also be a fan 2010, a display card or an expansion card, etc. For example, in another embodiment, as shown in FIG. 10 , one of the two snap-fit devices 100 further includes a support member 70. The support member 70 connects the first bodies 10 of the two snap-fit devices 100. The fan 2010 is connected to the support member 70. When the fan 2010 needs to be evacuated, the snap member 20 is rotated and snapped onto the first body 10, so that the sliding member 30 is located in the first position, the position of the fan 2010 is changed, and then the fan 2010 flows out of the evacuation space, and the components in the box 2001 can be repaired or disassembled in the evacuation space.

In one embodiment, the supporting member 70 and the two first bodies 10 are an integrally formed structure, but the present invention is not limited thereto.

It is understandable that in other embodiments, the support member 70 may also be in contact with the second body 60 to prevent the buckle member 20 from rotating.

The two fasteners 20 increase the strength of the fastening device 100 in supporting the functional element 2005, and increase the uniformity of the force supporting the functional element 2005, thereby increasing the position stability of the functional element 2005 and avoiding the problem of the unstable position of the functional element 2005 causing accidental damage to other components in the box 2001.

Please refer to Figures 7 and 8. The fastening device 100 further includes a limiter 40. The sliding member 30 is provided with a slide groove 31. The limiter 40 is connected to the first main body 10 through the slide groove 31 and can slide in the slide groove 31. It can be understood that in other embodiments, the limiter 40 can also be provided on the sliding member 30, and the first main body 10 is provided with the slide groove 31.

The buckling device 100 further includes a rotating shaft 50. The first body 10 and the buckle member 20 are rotatably connected via the rotating shaft 50. The rotating shaft 50 is offset from the sliding path of the sliding member 30.

The stopper 40 and the slide groove 31 are easy to manufacture and have a simple structure, and realize the sliding connection between the sliding member 30 and the first main body 10. The rotating shaft 50 realizes the rotation connection between the first main body 10 and the buckle 20. The rotating shaft 50 and the slide groove 31 are offset, and the connection points where the sliding member 30 and the buckle 20 are respectively connected to the first main body 10 are separated, so that the buckle 20 and the sliding member 30 are conveniently connected to the first main body 10.

In one embodiment, the slide groove 31 includes a first groove 311 and a second groove 313. The orthographic projection of the first groove 311 on the first body 10 is located within the orthographic projection of the second groove 313 on the first body 10, and the first groove 311 is closer to the first body 10 than the second groove 313. The stopper 40 includes a connecting portion 41 and a stopper 43 connected. The connecting portion 41 is configured to be connected to the first body 10 through the first groove 311 and the second groove 313, and the stopper 43 is located in the second groove 313 and stops at one side of the slide member 30 away from the first body 10.

The slide groove 31 is divided into a first groove 311 and a second groove 313 of different sizes, and the limiting member 40 is correspondingly provided with a connecting portion 41 and a limiting member portion 43. The structure is simple, and it is easy to realize that the limiting member 40 passes through the slide groove 31 and stops the sliding member 30 from moving away from one side of the first main body 10.

In one embodiment, there are a plurality of slide grooves 31 , which are disposed at intervals on the sliding member 30 . There are also a plurality of position-limiting members 40 , each of which is connected to the first body 10 and slidably disposed in one of the slide grooves 31 .

A plurality of slide grooves 31 are disposed at intervals on the sliding member 30 , and a solid structure is provided between adjacent slide grooves 31 , thereby enhancing the strength of the sliding member 30 .

It can be understood that in other embodiments, the number of the slide groove 31 may also be one.

Please continue to refer to FIG. 7 and FIG. 9 , the buckle 20 is provided with a protruding abutting portion 23. The abutting portion 23 is spaced apart from the rotating shaft 50. A first arc surface 231 is provided on the circumference of the abutting portion 23. A second arc surface 315 is provided on the outer peripheral wall of the sliding member 30. The first arc surface 231 and the second arc surface 315 are in contact and tangent to each other.

The abutting portion 23 abuts against and slides relative to the outer peripheral wall of the sliding member 30, so that the buckle 20 rotates to drive the sliding member 30 to slide relative to the first main body 10, and the outer periphery of the sliding member 30 contacts the outer periphery of the abutting portion 23, which is easy to achieve and improves the installation convenience of the abutting portion 23 and the sliding member 30.

In one embodiment, the first arc surface 231 is disposed at one end of the sliding member 30 close to the locking member 20 and is a semicircular surface. The supporting portion 23 is a cylindrical structure.

The first arc surface 231 is semicircular, and the supporting portion 23 is a cylindrical structure. The circular surface is easy to process and it is easy to ensure that the arc surface is tangent to the second arc surface 315, thereby improving the stability of the relative movement of the sliding member 30 and the locking member 20.

It can be understood that in other embodiments, the first arc surface 231 and the second arc surface 315 can also be omitted. For example, the supporting portion 23 is a rectangular block structure, and the supporting portion 23 contacts the outer peripheral wall of the sliding member 30. When the rotating member rotates, the supporting portion 23 pushes the sliding member 30 to make the sliding member 30 slide.

The sliding member 30 is located between the first body 10 and the buckle member 20. The buckle member 20 is provided with a buckle hole 25. The first body 10 is provided with a convex buckle 11. The convex buckle 11 is buckled and connected to the buckle hole 25. The convex buckle 11 is located on one side of the first body 10 facing the buckle member 20.

The buckle hole 25 is disposed on the buckle 20, and the protrusion 11 is disposed on the first main body 10. The position of the protrusion 11 is fixed and will not move with the rotation of the buckle 20. There is no need to leave a space between the sliding member 30 and the buckle 20 to avoid the protrusion 11, thereby reducing the distance between the sliding member 30, the buckle 20 and the first main body 10.

The above-mentioned snap-fitting device 100 is connected to the chassis 200 by the snap-fitting part 20 to fix the functional component 2005, and is rotatably connected to the first main body 10. When the area near the functional component 2005 needs to be avoided, the snap-fitting part 20 is rotated to drive the functional component 2005 to rotate to expose the avoidance space. The functional component 2005 does not need to be disassembled from the case 2001, thereby avoiding the problem of missing the functional component 2005 when the chassis 200 is reassembled after the avoidance. The snap-fitting part 20 is snap-fitted and connected to the first main body 10, so that the snap-fitting device 100 fixes the functional component 2005 to stably expose the avoidance space, and the sliding part 30 extends out of the case 2001 and is visualized outside the case 2001 to remind the functional component 2005 to be in the avoidance state.

Please refer to FIG. 7 , the functional element 2005 is provided with a handle 2015, which protrudes from the functional element 2005, so as to facilitate holding and pushing or pressing the functional element 2005, so that the buckle 20 rotates and the sliding member 30 slides. It can be understood that in other embodiments, the handle 2015 can also be omitted, or the handle 2015 can be provided on the buckle 20.

The above embodiments are only used to illustrate the technical solution of the present application and are not intended to be limiting. Although the present application is described with reference to the embodiments, a person skilled in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and essence of the technical solution of the present application.

200: Chassis 2001: Box 2011: Accommodation cavity 2013: Opening 2003: Box cover 2005: Functional element 2015: Handle part 2025: Stopper part 2007: Bracket 2009: GPU module 2010: Fan 100: Snap-fit device 10: First body 11: Protruding buckle 20: Snap-fitting part 23: Retaining part 231: First curved surface 25: Buckle hole 30: Sliding part 31: Sliding groove 311: First groove 313: Second groove 315: Second curved surface 40: Limiting part 41: Connecting part 43: Limiting part 50: Rotating shaft 60: Second body 70: Support parts

FIG. 1 is a schematic diagram of a chassis provided in an embodiment of the present application.

FIG. 2 is a schematic diagram of the buckling device in the chassis shown in FIG. 1 .

FIG. 3 is a schematic diagram showing the functional components connected to the snap-fit device shown in FIG. 2 in an installed state.

FIG. 4 is a schematic diagram showing the functional element connected by the snap-fit device shown in FIG. 2 in a wall-release state.

FIG. 5 is a simplified schematic diagram of the sliding member in the snap-fit device shown in FIG. 2 being held and fixed by the press cover.

FIG. 6 is a simplified schematic diagram of the locking device shown in FIG. 2 when the sliding member protrudes out of the box body.

FIG. 7 is an exploded schematic diagram of the fastening device shown in FIG. 2 .

FIG. 8 is a schematic diagram of a sliding member in the fastening device shown in FIG. 2 .

FIG. 9 is a schematic diagram of a fastener in the fastening device shown in FIG. 2 .

FIG. 10 is a schematic diagram of the fastening device shown in FIG. 2 including a supporting member in another embodiment.

2005: Functional element 2025: Stopper 2007: Bracket 10: First body 11: Protruding buckle 20: Snap-on part 30: Sliding part 31: Sliding groove 40: Limiting part 50: Rotating shaft

Claims (8)

A snap-fit device, comprising: A first body, configured to be fixed in a box, the first body being provided with a convex buckle; A buckle, configured to be connected to a functional element, the buckle being provided with a buckle hole, wherein the snap-fit device further comprises: A sliding member, the sliding member being located between the first body and the buckle, and being slidably connected to the first body; The buckle is rotatably connected to the first body, and is supported against the sliding member, so that the buckle is configured to drive the sliding member to slide when rotating, and the buckle is snap-fitted to the first body when the sliding member is located at a first set position protruding outside the box, and the convex buckle is snap-fitted to the buckle hole; The buckle is provided with a protruding abutting portion, the abutting portion is spaced apart from the rotating shaft, the abutting portion is provided with a first arc surface on its circumference, and the outer peripheral wall of the sliding member is provided with a second arc surface, and the first arc surface is in contact with and tangent to the second arc surface. The snap-fit device as described in claim 1, wherein: the snap-fit device further includes a limiter, one of the first body and the sliding member is connected to fix the limiter, and the other is provided with a slide groove, and the limiter is slidably arranged in the slide groove; The snap-fit device further includes a rotating shaft, the first body and the snap-fit member are rotatably connected via the rotating shaft, and the rotating shaft is offset from the sliding path of the sliding member. The snap-fit device as described in claim 2, wherein: the slide groove includes a first groove and a second groove, the orthographic projection of the first groove on the first body is located within the orthographic projection of the second groove on the first body, and the first groove is closer to the first body than the second groove; The stopper includes a connecting portion and a stopper portion, the connecting portion is configured to be connected to the first body through the first groove and the second groove, and the stopper portion is located in the second groove and stops at a side of the slide member away from the first body. A snap-fitting device as described in claim 2, wherein: there are multiple slide grooves, the multiple slide grooves are arranged on the sliding member at intervals, and there are multiple limit members, each of which is connected to the first main body and slidably arranged in one of the slide grooves. A chassis includes a box body, functional components and a snap-fit device, wherein the first main body is fixed in the box body, wherein: the snap-fit device is the snap-fit device described in any one of claims 1 to 4. A chassis as described in claim 5, wherein: the chassis also includes a case cover, the case cover is connected to the case body and presses and fixes the sliding member. The case as described in claim 6, wherein: when the case cover is connected to the case body, the latch and the case cover respectively abut against the opposite ends of the sliding member; The fastening device further includes a second body, which is fixed in the case body and abuts against the latch or the functional element to prevent the latch from rotating. The case as described in claim 5, wherein: the first body, the sliding member and the buckle are two in number respectively, and the two first bodies are fixed in the case at intervals; the functional element is connected between the two buckles; or the buckling device further includes a supporting member, which is connected between the two buckles and is configured to support and fix the functional element.

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