CN213276500U - Electronic device and fixing mechanism thereof - Google Patents

Abstract

An electronic device and a fixing mechanism thereof are provided. The fixing mechanism is suitable for fixing the shell to the case, the case comprises a protruding structure, and the fixing mechanism comprises a rotating piece and an abutting piece; the rotating piece is pivoted on the shell, and the abutting connection piece is pivoted with the rotating piece and is suitable for moving between a first position and a second position relative to the rotating piece; when the abutting part is located at the first position, the abutting part abuts against the protruding structure, and the rotating part is driven to drive the abutting part to move the abutting part from the first position to the second position, so that the abutting part releases the protruding structure. The utility model provides an electron device and fixed establishment can realize the fixed purpose that expands the unit module with the simple step of instrument of exempting from to convenient and effectual mode reaches the purpose of firm expansion unit module position really, has compromise demand and the operation convenience and the efficiency of maintaining electric connection.

Description

Electronic device and fixing mechanism thereof

Technical Field

The utility model relates to a fixed establishment especially relates to an electron device and fixed establishment thereof.

Background

Generally, an expansion slot is configured in a chassis of an electronic device such as a computer host or a server, so that an operator or a user can add a required expansion unit (such as a graphic processor, a hard disk or a memory) into a system according to the requirements of various cloud services. Moreover, in consideration of expandability, maintenance, and the like, the expansion units can be usually assembled into an expansion unit module and then installed in the chassis, and the rack is detachable so that a manufacturer or a user can perform replacement or addition work by himself.

In order to avoid the influence of external shock or other factors on the electrical connection of the expansion unit module, the conventional method is to lock the frame body to the chassis by screws to ensure that the expansion unit module does not depart from the predetermined position.

Therefore, the manufacturers abandon the method of locking the expansion unit module with screws for the convenience and efficiency of operation, and only limit the expansion unit module with the upper cover plate of the case. Specifically, the opening of the chassis is usually covered with an upper cover plate, which is mainly used to seal the internal components such as the expansion unit module in the chassis, and for some conventional chassis, the upper cover plate can also be used to stop the expansion unit module to limit the upward moving range of the expansion unit module, thereby limiting the expansion unit module. However, it is known from some practical feedback that the effect of limiting the upper cover plate is not certain, and in the case of only relying on the upper cover plate for limiting, the expansion unit module is still displaced relatively far away from the slot when receiving an external force, and in addition, the expansion unit module is often assembled by an operator with manpower without being actually butted, but the upper cover plate cannot be reliably pressed back to position. That is, the upper cover plate still cannot avoid the occurrence of poor contact of the expansion unit module under certain conditions, and although the complicated process of locking screws is omitted, the contact quality is problematic. Therefore, how to fix the expansion unit module in a convenient and efficient manner is one of the important research and development points in the field.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an electronic device and a fixing mechanism thereof, which can stabilize the position of an expansion unit module and simultaneously take into account the convenience and efficiency of assembly and disassembly.

According to the utility model discloses a fixed establishment, this fixed establishment is suitable for and is fixed in quick-witted case with the casing. The chassis includes a protruding structure. The fixing mechanism includes a rotating member and an abutting member. The rotating part is pivoted on the shell. The abutting part is pivoted with the rotating part and is suitable for moving between a first direction and a second direction relative to the rotating part. When the abutting piece is located at the first direction, the abutting piece abuts against the protruding structure. The driving rotating piece drives the abutting piece to enable the abutting piece to release the protruding structure when the abutting piece moves from the first direction to the second direction.

According to another embodiment of the present invention, an electronic device includes a housing, a casing, and a fixing mechanism. The chassis includes a protruding structure. The shell is detachably arranged on the case. The fixing mechanism includes a rotating member and an abutting member. The rotating part is pivoted on the shell. The abutting part is pivoted with the rotating part. When the shell is arranged on the case, the abutting part abuts against the protruding structure, so that the shell is fixed on the case. When the shell is separated from the case, the rotating piece is driven to drive the abutting piece to release the protruding structure.

Use the utility model discloses electronic device and fixed establishment thereof, fixed establishment can pass through the protruding structure of butt piece butt machine case, and exert the precompression that enables its steadiness in present position to the casing indirectly, and on the other hand, when wanting to take out the casing, the user only needs the rotation piece of drive fixed establishment can make butt piece release protruding structure and cancel the precompression that restricts the casing. Therefore, use the utility model discloses a fixed establishment can be in order to avoid the purpose of the simple step realization fixed extension unit module of instrument, has compromise demand and the operation convenience and the efficiency of maintaining electric connection.

The above description of the present disclosure and the following description of the embodiments are provided to illustrate and explain the spirit and principles of the present disclosure and to provide further explanation of the claims of the present disclosure.

Drawings

Fig. 1 is a schematic perspective exploded view illustrating an electronic device according to an embodiment of the present invention.

Fig. 2 is a partially enlarged schematic view illustrating an electronic device according to an embodiment of the present invention.

Fig. 3 is a partially enlarged schematic side-sectional view showing an electronic device according to an embodiment of the present invention.

Fig. 4 is a partially enlarged and exploded view illustrating an electronic device according to an embodiment of the present invention.

Fig. 5 is a partially enlarged schematic side view of an electronic device according to an embodiment of the invention.

Fig. 6 is a schematic diagram illustrating an operation of the electronic device according to the embodiment of the present invention in which the housing is taken out of the chassis.

Fig. 7 is an operation diagram illustrating an electronic device according to an embodiment of the present invention, in which a housing is replaced into a chassis.

Fig. 8 is a partially enlarged side view schematically showing a housing and a fixing mechanism according to another embodiment of the present invention.

Fig. 9 is a partially enlarged side view schematically showing a housing and a fixing mechanism according to still another embodiment of the present invention.

Description of the main component symbols:

1. 1 ', 1' fixing mechanism

9 electronic device

10. 10' rotating part

11 operating part

20. 20' abutment

21 long groove

22 recess

23 guide ramp

24 hook part

30 operating element

31 penetration part

32 fixed part

40 resilient member

70 linkage piece

71 Long groove

91 casing

93 upper cover plate

95. 95 ', 95', 96 casing

97 projecting structure

951 side plate

952. 952 "head plate

953 bottom plate

954 partition board

9511. 9511', 9521 holes

D1 and D1

MS expansion slot

RC adapter plate

S1 and S2 accommodating space

Detailed Description

Fig. 1 is a schematic perspective exploded view showing an electronic device according to an embodiment of the present invention, and fig. 2 is a schematic partial enlarged view showing the electronic device according to an embodiment of the present invention. It should be noted that, for the purpose of simplicity and easy viewing, the drawings simplify or omit the electronic/non-electronic components, such as the wiring, the fan, the hard disk module and other frame bodies, which are not directly related to the spirit of the present invention. In addition, the electronic device according to the embodiment of the present invention may be, for example, but not limited to, a server host, and may also be various other forms of server hosts or computer hosts.

Referring to fig. 1-2, an embodiment of the present invention provides an electronic device 9 and a fixing mechanism 1, in which the electronic device 9 at least includes a case 91, a housing 95, a housing 96, an upper cover 93 and a plurality of the fixing mechanisms 1. The casing 91 is a frame structure of the electronic device 9 for accommodating and carrying various components, and as shown in the figure, the housings 95 and 96 and the fixing mechanism 1 are all accommodated in the casing 91.

The shells 95 and 96 are, for example, expansion card holders (riser cards) for installing one or more expansion cards (not shown) to add systems of the electronic device 9, and the shells 95 and 96 and the expansion cards therein can form an expansion unit module together. Specifically, the expansion card may conform to the PCI Express specification and may be inserted into a PCIe slot (not numbered) on a Riser Card (RC) located in the housings 95 and 96, and the riser board RC may be connected to an expansion slot (MS) located below the housings 95 and 96, so that the expansion card may be electrically connected to the motherboard through the riser board RC. However, the present invention is not limited to the expansion card and the adapter plate RC, and the number, kind, and specification thereof. Moreover, the housings 95 and 96 can be respectively used for installing different or the same types of expansion units, which should not be construed as a limitation of the present invention. In addition, the shells 95, 96 may have the same or different dimensions, and the present invention is not limited thereto.

Generally, the close contact of the adapter board RC when plugged into the expansion slot MS can fix the housings 95 and 96 in the chassis 91 to some extent, but other mechanisms are still needed to further constrain the positions of the housings 95 and 96 for stable electrical connection. For example, the upper cover 93 shown in fig. 1, the upper cover 93 is detachably covered on the chassis 91, and can protect components (such as the shells 95, 96 and the adapter board RC and the expansion card thereon) accommodated in the chassis 91, and can also be stopped on the shells 95, 96 to limit the upward movement range of the shells 95, 96. However, the limiting effect of pressing the expansion card holder body by only the upper cover plate is limited, and it is known from past experience that the upper cover plate cannot prevent the housing from generating relative displacement when the chassis is subjected to an external force, or cannot press the housing (expansion card holder body) which is not installed by an operator to a fixed position, that is, the upper cover plate cannot prevent the expansion unit from being in poor contact under certain conditions.

In order to solve the above problem, the present invention utilizes the fixing mechanisms 1 respectively disposed at the sides of the casings 95 and 96 to more reliably limit the positions of the casings 95 and 96 on the casing 91, thereby ensuring that the casings 95 and 96 can be directly mounted and positioned, and simultaneously ensuring that the casings 95 and 96 can maintain the required electrical connection when being subjected to vibration or external impact. As shown in the figures, the shells 95 and 96 can be fixed by using the same fixing mechanism 1, and the fixing mechanism 1 can be disposed on different sides of the shells 95 and 96, so that the present invention provides a fixing mechanism 1 that can be selectively disposed on one side or two opposite sides of the shells 95 and 96 according to the requirement, which is not limited by the present invention.

Fig. 3 is a schematic diagram showing a partially enlarged side-cut-away view of an electronic device according to an embodiment of the present invention, fig. 4 is a schematic diagram showing a partially enlarged decomposition of an electronic device according to an embodiment of the present invention, and fig. 5 is a schematic diagram showing a partially enlarged side-cut of an electronic device according to an embodiment of the present invention. It should be noted that, since the housings 95 and 96 can use the same fixing mechanism 1, only the housing 95 and the fixing mechanism 1 for fixing the housing 95 are described as an example in the following figures.

Referring to fig. 2 to 5, in the embodiment of the present invention, the housing 95 may include a side plate 951, a top plate 952, a bottom plate 953, and a partition plate 954. The side plate 951 is connected between the top plate 952 and the bottom plate 953, and the partition 954 is also connected between the top plate 952 and the bottom plate 953 and keeps a distance from the side plate 951, in this configuration, an accommodating space S1 capable of accommodating the expansion card is provided between one side of the partition 954, which faces away from the side plate 951, and the top plate 952 and the bottom plate 953 together enclose an accommodating space S2 capable of accommodating the fixing mechanism 1. In this embodiment, the adapter plate RC is disposed on a side of the partition 954 opposite to the side plate 951, and one or more slots (not numbered) for receiving expansion cards are disposed thereon.

Furthermore, in the embodiment of the present invention, the housing 95 has a hole 9511 located on the side plate 951, when the housing 95 is disposed on the chassis 91, a protrusion 97 of the electronic device 9 can penetrate the hole 9511 and enter the receiving space S2, and the fixing mechanism 1 can fix the housing 95 at the current position by abutting against the protrusion 97. The protruding structure 97 described herein is, for example, a columnar structure protruding from a module or a frame disposed near the case 95 toward the case 95, and the position thereof is fixed and immovable, and may be regarded as a part of the housing 91.

Further, in the embodiment of the present invention, the fixing mechanism 1 may include a rotating member 10 and an abutting member 20, the rotating member 10 is pivotally disposed on the housing 95, and the abutting member 20 is pivotally disposed on the rotating member 10 and can be linked with the rotating member 10. Specifically, the rotating member 10 can be pivotally disposed on the side plate 951 of the housing 95, one end of the abutting member 20 is pivotally disposed on one end of the rotating member 10, and the other end of the abutting member 20 can be movably disposed at the broken hole 9511 on the side plate 951 for abutting against the protruding structure 97.

Furthermore, in the embodiment of the present invention, the abutting member 20 may have an elongated slot 21, and the abutting member 20 can be rotatably and slidably disposed on the side plate 951 by a locking member (not numbered) passing through the elongated slot 21 and fixed to the side plate 951 of the housing 95. In this configuration, when the rotating member 10 rotates relative to the housing 95, the abutting member 20 can be driven to move between a first orientation (shown in fig. 5) and a second orientation (shown in fig. 6) relative to the housing 95. As shown in fig. 5, when the abutment 20 is in the first orientation, the abutment 20 can abut the projection structure 97. As shown in fig. 6, when the abutment member 20 is driven by the rotating member 10 to the second orientation, the abutment member 20 can be relatively far away from the protrusion 97.

To facilitate the user to operate the fixing mechanism 1, in the embodiment of the present invention, the fixing mechanism 1 may further include an operating member 30. The operation element 30 is movably disposed in the housing 95 and can be used to couple the rotating element 10. Specifically, the operating element 30 may include a through portion 31 and a fixing portion 32, the through portion 31 may be in the form of a flat screw, for example, the through portion 31 may be movably disposed through the top plate 952 of the housing 95, and the fixing portion 32 may be in the form of a nut (nut), for example, which may be locked to a thread of the through portion 31 to dispose the through portion 31 on the top plate 952. As shown, one end of the operating element 30 (e.g., the fixing portion 32) can abut against an end of the rotating element 10 relatively far from the abutting element 20, and thus, the operation of the operating element 30 can drive the rotating element 10 to drive the abutting element 20.

In addition, in the embodiment of the present invention, the fixing mechanism 1 may further include an elastic element 40, and the elastic element 40 is abutted between the rotating element 10 and the housing 95, and is configured to drive the rotating element 10 to rotate in a specific direction, so that the abutting element 20 can be maintained in the first orientation through the rotating element 10. Specifically, the elastic element 40 can be, for example, in the form of a torsion spring (torsion spring), the elastic element 40 is disposed on the rotating element 10, one end of the elastic element 40 abuts against the rotating element 10, and the other end of the elastic element abuts against the bottom plate 953 of the housing 95, and can apply an elastic force to the rotating element 10, so as to drive the abutting element 20 to provide an abutting force to the protrusion structure 97, and at the same time, provide an abutting force to the operating element 30 through the rotating element 10.

Under this configuration, as shown in fig. 5, one end of the rotating member 10 connected to the abutting member 20 can receive a force of rotating in the direction D1, so that the abutting member 20 generates a force of rotating in the direction D1' opposite to the direction D1 relative to one end of the rotating member 10, so that the abutting member 20 moves in the first direction to abut against the protruding structure 97, and further a downward pre-pressure can be indirectly generated on the housing 95, and the housing 95 can be stably maintained at the current position by the pre-pressure, so that the electrical connection between the adaptor board RC and the expansion slot MS can be ensured, and the quality of the electrical connection of the expansion card can be ensured. Meanwhile, the other end of the rotating member 10 opposite to the abutting member 20 is rotated in the direction D1' to push the operating member 30 upward by a certain distance, but a concave relief portion (not shown) is provided at a position where the operating member 30 is connected to the top plate 952, so that the operating member 30 does not protrude from the entire upper surface of the top plate 952.

In the embodiment of the present invention, the abutting member 20 may further have a recess 22 located at the end of the abutting member 20 relatively far from the rotating member 10, and when the abutting member 20 is located at the first orientation and abuts against the protrusion 97, the protrusion 97 can be located at the recess 22 to stabilize the relative position relationship between the abutting member 20 and the protrusion 97.

Referring to fig. 6, how to take out the housing 95 from the cabinet 91 by operating the fixing mechanism 1 will be described. As shown in the figure, when the housing 95 is to be taken out, the user can press the operating element 30 downward (e.g. in the direction D1) to rotate the end of the rotating member 10 engaged with the abutting member 20 in the direction D1', so that the abutting member 20 rotates in the direction D1 relative to the end away from the rotating member 10 to disengage from the protruding structure 97 (away from the hole 9511). At this time, the abutting member 20 is in the second orientation, the pre-pressure generated by the fixing mechanism 1 on the housing 95 is cancelled, and at this time, the user can overcome the tight-fitting contact force of the adapter plate RC inserted in the expansion slot MS and then take out the housing 95 and the expansion card thereon from the chassis 91.

Next, referring to fig. 7, how to install the housing 95 into the chassis 91 is described. As shown in the figure, when the housing 95 is to be placed back into the casing 91, the user only needs to place the housing 95 downward in the casing 91, and in the process, the end of the abutting member 20 relatively far away from the rotating member 10 can abut against the protruding structure 97 and be pushed by the protruding structure 97 to move toward the second direction. Specifically, in the embodiment of the present invention, the abutting member 20 may further have a guiding inclined surface 23, which is located at the end of the abutting member 20 relatively far from the rotating member 10 and opposite to the aforementioned recess 22, when the housing 95 is lowered, the abutting member 20 abuts against the protrusion structure 97 with the guiding inclined surface 23, the component force generated by the protrusion structure 97 on the guiding inclined surface 23 can drive the abutting member 20 to move toward the second direction, as the housing 95 continues to move downward, understandably, the protrusion structure 97 can cross over the guiding inclined surface 23 of the abutting member 20, and when the protrusion structure 97 crosses over the guiding inclined surface 23, the abutting member 20 can return to the state (i.e. the first direction) as shown in fig. 5 and abut against the protrusion structure 97 again upward.

Therefore, the embodiment of the present invention provides a fixing mechanism 1, which can apply a pre-pressure to a casing 95 when the casing 95 is disposed on a chassis 91 to stabilize the position thereof and ensure the electrical connection state of an expansion card, when the casing 95 is to be removed or installed, a user can only complete the operation by pressing the fixing mechanism 1 in a single step or by placing the casing 95 in a proper position, the operation steps are simple, no additional manual tool is required, and convenience and efficiency can be taken into consideration when the position of the casing 95 is stabilized.

It should be noted that, in the fixing mechanism 1 according to the embodiment of the present invention, the abutting member 20 is abutted against the protruding structure 97 through the elastic member 40, so that the generated pre-pressure has elasticity, and the abutting member 20 can maintain a state of contacting the protruding structure 97 under external forces in various situations, thereby ensuring the positioning effect of the fixing mechanism 1 on the housing 95.

In addition, since the fixing mechanism 1 is sheet-shaped as a whole, it can be disposed on the left side, the right side, other sides or multiple sides of the housing 95 or 96 according to design requirements, as shown in fig. 1, the fixing mechanism 1 is suitable for the left side of the housing 95, while another fixing mechanism 1 of the same design is suitable for the right side of the housing 96, and the protrusion structure 97 matched with the fixing mechanism 1 in the housing 96 can be correspondingly disposed on the inner side of the side wall (not numbered) of the case 91. Therefore, the fixing mechanism 1 of the present invention has high sharing and application flexibility, and can adjust the position according to various actual requirements.

The above is only one exemplary mode of the fixing mechanism of the present invention, and the present invention is not limited thereto. Other embodiments of the securing mechanism of the present invention will be exemplified below. However, it should be noted that, for the purpose of brief description, the following embodiments are only described with reference to differences, and similar or identical portions between the embodiments can be understood by referring to the already described contents and are not described again.

Fig. 8 is a partially enlarged side view schematically showing a housing and a fixing mechanism according to another embodiment of the present invention. Referring to fig. 8, in the embodiment of the present invention, the size and configuration of the housing 95 'may be different from the housing 95 of the previous embodiment, and the hole 9511' through which the protrusion 97 is inserted may be located at a position far from the operation element 30, and accordingly, the fixing mechanism 1 'of the embodiment of the present invention may further include a linking member 70, so as to achieve the purpose of enabling the linking member 70 to link the abutting member 20' to abut against the protrusion 97.

Specifically, in the embodiment of the present invention, the two opposite ends of the linking member 70 are respectively pivoted to the rotating member 10 and the abutting member 20 ', and the linking member 70 has an elongated slot 71 and is rotatably and slidably disposed in the housing 95'. Thus, when the elastic element 40 drives the rotating element 10 to rotate in a specific direction (as shown in the direction D1), the end of the linking element 70 engaged with the abutting element 20 'can receive a force of rotating in the direction D1', so that the end of the abutting element 20 'relatively far from the rotating element 10 generates a force of rotating in the direction D1, and the end of the abutting element 20' moves in the first direction to press the protrusion 97 downward. In another embodiment of the present invention, the abutting member 20 'may have a hook portion 24 adapted to hook the protrusion 97 when the abutting member 20' is located at the first orientation, so as to limit the position of the housing 95 'in the left-right direction of the drawing (e.g. the direction perpendicular to the directions D1 and D1').

Therefore, according to the difference of the size or the configuration of the applied shell, the position of the protruding structure can be matched or the direction of the pre-pressing force applied to the protruding structure can be adjusted by increasing or decreasing the number of the connecting rods of the fixing mechanism.

Fig. 9 is a partially enlarged side view schematically showing a housing and a fixing mechanism according to still another embodiment of the present invention. Referring to fig. 9, in the embodiment of the present invention, the user can operate the fixing mechanism 1 "by directly actuating the rotating member 10". In detail, the top plate 952 "of the housing 95" may have a hole 9521, and the rotating member 10 "of the fixing mechanism 1" may have an operating portion 11 (for example, may have a saw-toothed profile), and the operating portion 11 may be inserted through and partially protrude from the hole 9521 of the top plate 952 ". Therefore, the user can touch the operation portion 11 from the outside of the housing 95 ″ so as to drive the rotating member 10 ″ by dialing the operation portion 11, and the purpose of driving the abutting member 20 to move between the first position and the second position by the linking member 10 ″ can also be achieved.

Finally, it is added that the elastic member of the embodiment of the present invention may also be changed to an elastic structure of other form, for example, in other embodiments of the present invention, the elastic member may also be in the form of a compression spring (compression spring), and only for achieving the same purpose, when the compression spring is used as the elastic member, the elastic member may be changed to be clamped between the rotating member and the bottom plate of the housing; alternatively, in other embodiments of the present invention, the elastic member may be in the form of an extension spring (extension spring), and only for the same purpose, when the extension spring is used as the elastic member, the elastic member may be changed to be engaged between the rotating member and the top plate of the housing.

In summary, according to the electronic device and the fixing mechanism thereof disclosed in the embodiments of the present invention, the fixing mechanism can indirectly apply the pre-pressure to the housing to stabilize the housing at the current position by the abutting member abutting against the protruding structure of the chassis, and on the other hand, when the user wants to take out the housing, the user only needs to drive the rotating member of the fixing mechanism to release the protruding structure of the abutting member and cancel the pre-pressure to limit the housing. Therefore, the fixing mechanism of the utility model can be used for avoiding the simple steps of tools to realize the purpose of fixing the shell (extending the unit module), and the requirements for maintaining the electric connection and the operation convenience and efficiency are both considered.

Although the present invention has been described with reference to the foregoing embodiments, the invention is not limited thereto. All the modifications and changes made by those skilled in the art without departing from the spirit and scope of the present invention belong to the protection scope of the present invention. With regard to the scope of protection defined by the present invention, reference should be made to the appended claims.

Claims (16)

1. A securing mechanism adapted to secure a housing to a chassis, the chassis including a projection arrangement, the securing mechanism comprising:

a rotating member pivoted to the housing; and

the abutting connection piece is pivoted with the rotating piece and is suitable for moving between a first direction and a second direction relative to the rotating piece;

when the abutting part is located at the first position, the abutting part abuts against the protruding structure, the rotating part is driven to drive the abutting part to enable the abutting part to move from the first position to the second position, and the abutting part releases the protruding structure.

2. The fixing mechanism as claimed in claim 1, wherein the housing has a hole, and the protrusion is disposed through the hole when the housing is fixed to the chassis.

3. The fixing mechanism as claimed in claim 1, wherein the fixing mechanism further comprises an operating member movably disposed on the housing, the operating member driving the rotating member to drive the abutting member.

4. The fastening mechanism as claimed in claim 1, further comprising an elastic member abutting between the rotating member and the housing, wherein the elastic member provides an abutting force to the protrusion structure via the rotating member and the abutting member.

5. The securing mechanism as claimed in claim 1, wherein the abutment member has an elongated slot through which the abutment member is rotatably and slidably disposed on the housing.

6. The securing mechanism as claimed in claim 1, further comprising a linking member coupled between the rotating member and the abutting member.

7. The fastening mechanism as claimed in claim 1, wherein the abutting member has a hook portion adapted to hook the protrusion.

8. The fixing mechanism as claimed in claim 1, wherein the rotating member has an operating portion, and the operating portion is driven to drive the abutting member to move from the first orientation to the second orientation.

9. An electronic device, comprising:

a chassis, the chassis including a protruding structure;

a housing detachably disposed in the case, an

A securing mechanism, the securing mechanism comprising:

a rotating member pivoted to the housing; and

a butting component which is pivoted with the rotating component;

when the shell is arranged on the case, the abutting part abuts against the protruding structure, so that the shell is fixed on the case, and when the shell is separated from the case, the rotating part is driven to drive the abutting part to release the protruding structure.

10. The electronic device of claim 9, wherein the housing has a hole, and the protrusion is disposed through the hole when the housing is fixed to the chassis.

11. The electronic device of claim 9, wherein the fixing mechanism further comprises an operating member movably disposed on the housing, the operating member driving the rotating member to drive the abutting member.

12. The electronic device of claim 9, wherein the fixing mechanism further comprises an elastic member abutting between the rotating member and the housing, and providing an abutting force to the protrusion structure through the rotating member and the abutting member.

13. The electronic device as claimed in claim 9, wherein the abutting member has an elongated slot, and the abutting member is rotatably and slidably disposed on the housing through the elongated slot.

14. The electronic device as claimed in claim 9, wherein the fixing mechanism further comprises a linking member coupled between the rotating member and the abutting member.

15. The electronic device of claim 9, wherein the abutting member has a hook portion adapted to hook the protrusion structure.

16. The electronic device of claim 9, wherein the rotating member has an operating portion, and driving the operating portion drives the abutting member.

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