TWM579869U - Server device and its latch mechanism - Google Patents

Abstract

A latch mechanism includes a frame, an elastic piece, a sliding rack, an elastic returning member and a hooking portion. The elastic piece includes a securing portion, a receiving portion and a fastening member. The securing portion is fixed to the frame and arranged opposite to the fastening member. The sliding rack includes a bracket and a protruding portion. The bracket is slidably located between the frame and the elastic piece. The protruding portion is received in the receiving portion. The elastic returning member is connected to the frame and the sliding rack. The hooking portion is connected to the sliding rack and is removably fastened by a fixing portion of the frame. When the sliding rack moves the protruding portion, the elastic returning member and the hooking portion, the protruding portion pushes the fastening member back into the frame, the elastic returning member is deformed, and the hooking portion is fastened by the fixing portion of the frame to keep the elastic returning member not being resumed.

Description

Server device and its card mechanism

This creation relates to a server device, and more particularly to a server device having a cassette mechanism.

A plurality of slidable server units are stacked in a cabinet of the existing server device. Each server unit can be horizontally pulled along the rails in the cabinet to facilitate maintenance or replacement of the host or hard drive on the server unit.

The conventional server unit is provided with a stop structure to position the server unit at a predetermined position within the cabinet, and to prevent the server unit from unintentionally shaking or even escaping from the slide rail in the cabinet, causing safety concerns.

However, the stop structure of these server units still needs to be designed in a more convenient and user-friendly manner in terms of structure, assembly and operation, so as to increase user convenience and willingness to use.

The present invention provides a server device and a latching mechanism for solving the difficulties mentioned in the prior art.

According to an embodiment of the present creation, the cassette mechanism comprises a frame, a spring piece, a sliding frame, an elastic returning piece and a hook portion. The frame has an accommodating space and a fastening portion. The elastic piece is located in the accommodating space and fits on the inner surface of the frame. The elastic piece comprises a fixing portion, a receiving portion, a free end and a fastening member. The fastening portion is fixed to the frame with the free ends facing each other. The accommodating portion is located between the fixing portion and the free end, and the latching member is located at the free end and protrudes out of the frame from the accommodating space. The carriage includes a bracket and a projection. The bracket is slidably located between the spring and the frame. The protruding portion protrudes from the bracket and is received in the receiving portion. The elastic return member connects the frame to the carriage. The hook portion connects the bracket and is removably fastened to the buckle portion. In this way, when the sliding frame moves the protruding portion, the elastic returning member and the hook portion, the protruding portion moves between the elastic piece and the frame, and the locking member is pushed into the accommodating space of the frame, and the elastic returning member is deformed, and The hook portion is fastened to the fastening portion such that the elastic return member stores a restoring force that allows the projection to move back to the receiving portion.

In one or more embodiments of the present invention, the frame includes a first panel and a second panel. The second panel is located on one side of the first panel. The fastening portion is located on the first plate member, and the fastening portion is a broken inner side of the second plate member.

In one or more embodiments of the present invention, the hook portion includes a hook body and a torsion spring. The hook body is rotatably coupled to the bracket for fastening the fastening portion. The torsion spring connects the bracket and the hook body to push the hook body to the fastening portion.

In one or more embodiments of the present invention, the stent includes a first sheet and a second sheet. The second sheet is located on one side of the first sheet and is orthogonal to the first sheet. The projection is formed on the first sheet. The hook portion includes a spring arm and a hook member, one end of the elastic arm is integrally formed to connect the second body body, the other end is a free end extending toward the fixing portion, and the hook member is located at the free end of the elastic arm, To snap to the buckle.

In one or more embodiments of the present creation, the hook comprises two wedges. The wedge pieces are respectively connected to opposite sides of the elastic arm and extend in the same direction.

In one or more embodiments of the present invention, the latch mechanism further includes a grip portion. The grip connecting bracket is away from one end of the fixing portion.

In one or more embodiments of the present creation, the grip includes an L-shaped handle.

According to another embodiment of the present invention, a server device includes a chassis, a chassis, and the latching mechanism described above. The frame comprises an internal space, a first sliding rail, a second sliding rail and a fastening hole. The first slide rail is located opposite the second slide rail in the inner space. The fastening hole is located on the first sliding rail. The chassis is removably located within the interior space and is slidably located on the first rail and the second rail. The cassette mechanism is fixed on the chassis and is removably snapped to the fastening hole through the snap fastener. When the latching member is pushed into the accommodating space, the latching member is disengaged from the securing hole.

In one or more embodiments of the present invention, the rack further includes a trigger portion. The trigger portion is an outer edge of the first slide rail. In this way, when the chassis moves into the internal space and contacts the trigger portion, the trigger portion disengages the hook portion from the fastening portion, so that the elastic return member releases the restoring force.

In one or more embodiments of the present invention, the latching mechanism is fixed to the inner side of the side panel of the chassis, and is fastened to the securing hole through one of the through holes of the side panel.

In this way, through the above structure, the user can automatically complete the chassis-to-rack fastening by simple operation, thereby reducing the simplification of components, thereby reducing material cost and structural complexity, and increasing user convenience and willingness to use.

The above description is only used to explain the problems to be solved by this creation, The technical means of solving the problem, the effect it produces, and the like, the specific details of the present invention will be described in detail in the following embodiments and related drawings.

10‧‧‧Server device

100‧‧‧Rack

101‧‧‧ outer column

110‧‧‧Internal space

120‧‧‧First slide rail

130‧‧‧Second rail

140‧‧‧Cargukong

150‧‧‧Trigger

200‧‧‧Chassis

201‧‧‧ side panels

202‧‧‧through opening

203‧‧‧floor

204‧‧‧ slotting

210‧‧‧Block surface

300, 301, 302, 303‧ ‧ 榫 榫 institutions

400‧‧‧Frame

410‧‧‧ inside

420‧‧‧ accommodating space

430‧‧‧ openings

431‧‧‧ inner edge

440‧‧‧ first board

450‧‧‧Second board

451‧‧‧ breach

452‧‧ ‧ inside the mouth

453‧‧‧ end face

460‧‧‧ third board

500‧‧‧Shrap

510‧‧‧Length sheet

511‧‧‧ first end

512‧‧‧ second end

513‧‧‧ accommodating department

514‧‧‧Card fasteners

515‧‧‧Fixed parts

516‧‧‧Bending

517‧‧‧Guidance

518‧‧‧ oblique side

520, 521, 523‧‧ ‧ grip

530‧‧‧L type handle

540‧‧‧ring handle

550‧‧‧ Ontology

551‧‧‧Abutment

552‧‧‧ inclined section

551L, 552L‧‧‧ minimum straight line distance

553‧‧‧ pivot shaft

555‧‧‧Handle

600, 601‧‧‧ carriage

610‧‧‧ bracket

611‧‧‧ third end

612‧‧‧ fourth end

613‧‧‧protrusion

621‧‧‧ first piece

622‧‧‧Second body

700, 701‧‧‧ elastic reset parts

800, 801‧‧‧ card hook

810, 811‧‧‧

820‧‧‧torsion spring

821‧‧‧ pivot

822‧‧‧Bump

830‧‧‧Bounce arm

840‧‧‧Hook

841‧‧‧Wedges

842‧‧‧Free end

A-A‧‧ ‧ line segment

C1, C2‧‧‧ direction of rotation

D1, D2‧‧‧ movement direction

G‧‧‧ gap

X, Y, Z‧‧‧ axis direction

The above and other objects, features, advantages and embodiments of the present invention can be more clearly understood. The description of the drawings is as follows: FIG. 1 is an exploded view of a server device according to an embodiment of the present invention; 2 is a perspective view of the cassette mechanism of the first embodiment of the present invention; FIG. 3 is an exploded view of the cassette mechanism of FIG. 2; and FIG. 4A is a diagram showing the cassette mechanism of FIG. 3 in an unlocked state. Figure 4B is a top view of the cassette mechanism of Figure 4A; Figure 5A is a front view of the cassette mechanism of the second embodiment of the present invention; and Figure 5B is a line AA of Figure 5A. A partial cross-sectional view is formed; FIG. 6 is a perspective view of the locking mechanism of the third embodiment of the present invention; and FIGS. 7A and 7B are diagrams showing a continuous operation of the locking mechanism of the sixth embodiment in an unlocked state; 8 is a perspective view of the cassette mechanism of the fourth embodiment of the present invention; FIG. 9A is an operation diagram of the cassette mechanism of FIG. 8 in an unlocked state; and FIG. 9B is a diagram showing the cassette mechanism of FIG. An operation diagram of the permanent unlock state; and FIG. 9C illustrates the operation of the card mechanism of FIG. 9B not being fastened by the buckle portion Drawing.

The plural embodiments of the present invention are disclosed in the following figures, and for the sake of clarity, many practical details will be described in the following description. However, it will be appreciated by those skilled in the art that these practical details are not necessary in the context of this inventive part and therefore are not intended to limit the present invention. In addition, some of the conventional structures and elements are shown in the drawings in a simplified schematic manner in order to simplify the drawings. In addition, the dimensions of the various elements in the drawings are not shown in actual scale for the convenience of the reader.

1 is an exploded view of a server device 10 in accordance with an embodiment of the present invention. As shown in FIG. 1, in the present embodiment, the server device 10 includes a rack 100, a chassis 200 and a latch mechanism 300. The frame 100 includes an internal space 110, a first sliding rail 120 and a second sliding rail 130. The first sliding rail 120 and the second sliding rail 130 are respectively locked on the frame 100 and located in the internal space 110 opposite to each other. The first slide rail 120 has at least one (eg, two) fastening holes 140 therein. The chassis 200 is slidably located on the first rail 120 and the second rail 130 such that the chassis 200 is removably received in the interior space 110. The cassette mechanism 300 is fixed to the chassis 200 for movement in synchronization with the chassis 200. The cassette mechanism 300 is disposed on the side plate 201 of the chassis 200 corresponding to the first slide rail 120. For example, the latching mechanism 300 is disposed on the inner side of the side panel 201 to be fastened to the securing hole 140 through the through opening 202 of the side panel 201, thereby allowing the chassis 200 to be fixed to the rack 100.

More specifically, FIG. 2 is a perspective view of the cassette mechanism 300 of the first embodiment of the present invention. Figure 3 is an exploded view of the cassette mechanism of Figure 2. As shown in FIG. 2 and FIG. 3 , in the embodiment, the latching mechanism 300 includes a frame 400 , a resilient piece 500 , a gripping portion 520 , a sliding frame 600 , an elastic returning member 700 and a hook Department 800. The frame 400 has an accommodating space 420 and at least one (eg 2) openings 430. An opening 430 is formed in the inner face 410 of the frame 400. The elastic piece 500 is located in the accommodating space 420 and conforms to the inner surface 410 of the frame 400. The elastic piece 500 includes an elongated piece 510, a receiving portion 513 and at least one (for example, two) locking members 514. The elongated body 510 has a first end 511 and a second end 512 opposite to each other. The first end 511 is fixed to the inner surface 410 of the frame 400 through the fixing portion 515, and the second end 512 is a free end. The accommodating portion 513 is located between the first end 511 and the second end 512, for example, a through opening. However, the present invention is not limited thereto. In other embodiments, the receiving portion 513 may also be a recessed portion of the elongated piece 510. The catch 514 is located on the second end 512 of the elongated body 510 and extends out of the frame 400 from the opening 430. The elongated body 510 has a bent portion 516 that abuts the fastening portion 515, forcing the elastic piece 500 to drive the catching member 514 out of the frame 400 from the opening 430 of the frame 400.

The carriage 600 includes a bracket 610 and a protrusion 613. The bracket 610 is slidably disposed between the elastic piece 500 and the frame 400. The protruding portion 613 protrudes from the bracket 610 and is received in the receiving portion 513 . The bracket 610 has a third end 611 and a fourth end 612 opposite to each other. The grip portion 520 is coupled to the third end 611 of the bracket 610 and extends beyond the interior space 110 (Fig. 1). The grip 520 includes, for example, an L-shaped handle 530. The third end 611 of the bracket 610 is adjacent to the fixing portion 515 of the elongated body 510. The elastic return member 700 is, for example, a compression spring that connects the frame 400 with the carriage 600. The hook portion 800 is connected to the bracket 610 for removably fastening to the fastening portion of the frame 400. In the embodiment, the latching member 514 is located between the elastic returning member 700 and the fixing portion 515.

More specifically, the frame 400 includes a first panel 440, a second panel 450, and a third panel 460. The second plate 450 and the third plate 460 are respectively Located on opposite sides of the first plate member 440 and extending in the same direction (such as the Y-axis direction). The same direction (such as the Y-axis direction) is orthogonal to the long axis direction (such as the X-axis direction) of the first plate member 440, for example. The second plate member 450 has a breach 451, and the fastening portion is the breached inner side 452 of the breach 451.

In addition, the hook portion 800 includes a hook body 810 and a torsion spring 820. The hook body 810 is rotatably coupled to the bracket 610 through a pivot 821. The torsion spring 820 is fixed on the bracket 610 through the protrusion 822, and connects the bracket 610 and the hook body 810 to provide an elastic force to continuously push the hook body 810 toward the second board member 450.

FIG. 4A is a diagram showing the operation of the cassette mechanism 300 of FIG. 3 in an unlocked state. FIG. 4B is a top view of the cassette mechanism 300 of FIG. 4A. As shown in FIG. 1 , FIG. 4A and FIG. 4B , when the user pushes the grip 520 toward the internal space 110 (eg, the moving direction D1 ) so that the carriage 600 moves relative to the frame 400, since the projection 613 follows The carriage 600 is moved from the accommodating portion 513 between the elastic piece 500 and the frame 400, so that the second end 512 of the elongated piece 510 is pulled, and the gap G between the elastic piece 500 and the frame 400 is raised (Fig. 4B), Further, the latching member 514 is pushed back into the accommodating space 420 from the opening 430, that is, the latching member 514 is disengaged from the securing hole 140 of the first rail 120 (FIG. 1). As such, the chassis 200 is no longer fixedly confined within the interior space 110, and thus, the chassis 200 can be pulled out of the interior space 110 of the rack 100 (FIG. 1).

In addition, at the same time that the carriage 600 moves relative to the frame 400, the elastic return member 700 begins to be compressed by the carriage 600 and the frame 400, and is in a deformed state, and stores a projection 613 to be moved back to accommodate Department 513's recovery power. As the carriage 600 moves, the hook body 810 of the hook portion 800 is pushed into the breach 451 along the second plate 450 to be fastened to the inside 452 of the breach, and the latch mechanism 300 is temporarily in a state of balance, called the unlocked state.

It is to be understood that, since the latching member 514 is temporarily forced into the receiving space 420 of the frame 400 and does not protrude from the opening 430 outside the frame 400, the latching member is in the process of the chassis 200 being pulled out. 514 does not interfere with the first rail 120, reducing the chance of the buckle 514 or the first rail 120 being damaged.

In addition, the elastic piece 500 further has a guiding portion 517. The guiding portion 517 is located at the edge of the elongated body 510 facing the receiving portion 513 to allow the protruding portion 613 to move more smoothly between the elastic piece 500 and the frame 400.

Conversely, when the user pushes the chassis 200 into the internal space 110 of the rack 100, once the hook portion 800 of the protruding opening 451 passes through the slot 204 (FIG. 1) of the bottom plate 202 of the chassis 200, the frame is contacted to the chassis. In the triggering portion 150 in the 100, the triggering portion 150 in the frame 100 will push the hook portion 800, so that the hook portion 800 is retracted from the breaking opening 451 into the accommodating space 420 and is separated from the breaking portion 451. Therefore, the restoring force of the elastic returning member 700 which is not interfered by the carriage 600 can automatically return the carriage 600, the fastening member 514 and the hook portion 800 to the original position (as shown in FIG. 2), and the user does not need to manually manually Operation, thereby improving user convenience and willingness to use. For example, the trigger portion 150 is, for example, the leading edge of the first slide rail 120 or other side edges, however, the present creation is not limited thereto.

Further, as shown in FIG. 1, the frame 100 includes four outer column members 101. The outer column members 101 are respectively arranged at an upright interval to collectively surround the inner space 110. The first slide rail 120 is fixed to the two outer pillar members 101. The second slide rail 130 is fixed to the other two outer column members 101.

Fig. 5A is a front elevational view showing the latch mechanism 301 of the second embodiment of the present invention. Figure 5B is a partial section formed along line A-A of Figure 5A. Figure. As shown in FIGS. 5A and 5B, the cassette mechanism 301 of FIG. 5A is substantially the same as the cassette mechanism 300 of FIG. 2, with the difference that the hook portion 801 is a part of the bracket 610 and is not pivotally connected. A separate component to the bracket 610. For example, but not limited to the present invention, the bracket 610 includes a first body 621 and a second body 622. The second body 622 is located on one side of the first body 621 and orthogonal to the first body 621, or at least intersects, wherein the protrusion 613 is formed on the first body 621, and the first body 621 By virtue of the first panel 440, the second panel 622 is stacked on the second panel 450, and the hook portion 801 is integrally formed to the second panel 622. More specifically, the hook portion 801 includes a spring arm 830 and a hook member 840. One end of the elastic arm 830 integrally connects the second body 622, and the other end is a free end 842 extending toward the fixing portion 515. Hook 840 is located at free end 842 of spring arm 830. Thus, when the carriage 600 is pushed toward the movement direction D1, so that the hook 840 of the second sheet 622 falls into the breach 451 and is fastened to the inside 452 of the breach, the hook 840 of the hook portion 801 can also make the elastic reset member 700 stores the above-mentioned restoring force.

As shown in FIG. 5B, more specifically, the hook 840 further includes two wedge pieces 841. These wedge pieces 841 are respectively connected to opposite sides of the elastic arm 830 and extend in the same direction, so that the hook portion 801 is more conveniently completed.

Fig. 6 is a perspective view showing the latch mechanism 302 of the third embodiment of the present invention. 7A and 7B are diagrams showing a continuous operation of the latch mechanism 302 of FIG. 6 in an unlocked state. As shown in FIG. 6, the cassette mechanism 302 of FIG. 6 is substantially the same as the cassette mechanism 300 of FIG. 2, except that the fastening portion is the end surface 453 of the second plate member 450 facing the grip portion 521, not The inside 452 is broken, and the elastic returning member 701 is a tension spring, and the grip portion 521 includes a ring-shaped handle 540. In this embodiment, the latching member 514 is located at the elastic return member 701 and the ring-shaped handle 540. between.

Thus, when the user pulls the grip portion 521 and the carriage 600 toward the inner space 110 (such as the movement direction D2), as shown in FIG. 7A, since the projection portion 613 is moved in from the housing portion 513 along the movement direction D2. Between the elongated body 510 and the frame 400, the latching member 514 is retracted from the opening 430 into the accommodating space 420, and the hook body 811 of the hook portion 800 is separated from the surface of the second plate member 450, and is turned by the torsion spring 820. Launched below.

Then, when the user no longer applies the force to pull the grip portion 521 and the carriage 600, the restoring force of the elastic returning member 701 drives the grip portion 521 opposite to the carriage 600 (such as the movement direction D1), so that the hook portion The hook body 811 of the 800 is moved to the end surface 453 of the second plate member 450 (FIG. 7A), and the hook body 811 of the hook portion 800 can be fastened to the end surface 453 of the second plate member 450 (No. 7B). Figure) to temporarily lock the cassette mechanism 302.

It should be understood that the snap member 514 has a hook shape with a beveled edge 518 and the opening 430 has an inner edge 431. Therefore, when the carriage 600 is pulled in the moving direction D2, the inner edge of the opening 430 pushes the oblique side 518 of the latching member 514, so that the protruding portion 613 can be moved more smoothly and the elongated sheet body 510 and the frame 400 are stretched. The gap between them.

Fig. 8 is a perspective view showing the latch mechanism 303 of the fourth embodiment of the present invention. As shown in FIG. 8, the latch mechanism 303 of FIG. 8 is substantially the same as the latch mechanism 302 of FIG. 6 except that the grip portion 523 of the latch mechanism 303 is pivotally mounted on the bracket 610, not fixedly. Connected to the bracket 610.

Specifically, the chassis 200 has a blocking surface 210 facing the grip portion 523. The grip portion 523 includes a body 550, a pivot shaft 553 and a grip 555. The handle 555 is coupled to one side of the body 550. The body 550 is pivotally connected to the pivot shaft 553 to The bracket 610 is away from one end of the fixing portion 515 such that the body 550 can rotate relative to the carriage 600 about the axis of the pivot shaft 553. More specifically, the body 550 includes an abutting portion 551 and an inclined portion 552. The abutting portion 551 abuts the inclined portion 552 and is disposed opposite the grip 555. The minimum linear distance 551L of the pivot shaft 553 to the abutting portion 551 is greater than the minimum linear distance 552L of the pivot shaft 553 to the inclined portion 552. In other words, the pivot shaft 553 is not at the centroid of the body 550.

Fig. 9A is a view showing the operation of the latch mechanism 303 of Fig. 8 in the engaged state. FIG. 9B is a diagram showing the operation of the cassette mechanism 303 of FIG. 8 in a permanently unlocked state. FIG. 9C is a diagram showing the operation of the latching mechanism 303 of FIG. 9B no longer being engaged by the fastening portion. As shown in FIG. 9A, when the user pulls the grip portion 523 and the carriage 600 to the left (such as the movement direction D2), the hook portion 800 is fastened to the fastening portion, and the locking mechanism 303 is unlocked. Status (Fig. 9A). Next, the user turns the grip portion 523 again so that the abutting portion 551 of the grip portion 523 directly abuts against the blocking surface 210 of the frame 100 (FIG. 9B). Therefore, the movement of the carriage 600 is restricted by the blocking surface 210 and the fastening portion, respectively, and the elastic return member 700 continues to be in a deformed state and is prevented from releasing the restoring force, so that the carriage 600 cannot be pulled back to the original position by the elastic return member 700.

In this manner, even if the hook body 811 is pushed back into the accommodating space 420 by the trigger portion 150, the stop of the end surface 453 to the carriage 600 is released (FIG. 9C), but the blocking portion 210 is blocked by the blocking surface 210. Therefore, the carriage 600 cannot be pulled back to the original position by the elastic returning member 700, so that the locking mechanism 303 of the embodiment can be in the permanent unlocking state, so that the stop of the sliding frame 600 is not released (FIG. 9B). .

Since the abutting portion 551 of the grip portion 523 is farther from the inclined portion 552 The pivoting shaft 553, when the grip portion 523 is rotated relative to the carriage 600 in the rotational direction C1, the blocking surface 210 of the frame 100 can directly abut against the abutting portion 551 of the grip portion 523; in other words, when the grip portion 523 When the rotation direction C2 is rotated relative to the carriage 600, the abutment portion 551 of the frame 100 does not directly abut against the blocking surface 210 of the frame 100, but is spaced apart from the blocking surface 210 of the frame 100.

Thus, when the grip portion 523 is rotated such that the abutment portion 551 of the frame 100 faces the blocking surface 210 of the frame 100, since the abutment portion 551 of the frame 100 cannot directly stop the blocking surface 210, once the carriage is The 600 is no longer blocked by the fastening portion, and the carriage 600 can be pulled back to the original position by the restoring force of the elastic return member 700.

Finally, the various embodiments disclosed above are not intended to limit the present invention, and any person skilled in the art can be protected in this manner without departing from the spirit and scope of the present invention. In the creation. Therefore, the scope of protection of this creation is subject to the definition of the scope of the patent application attached.

Claims (10)

A latching mechanism includes: a frame having an accommodating space and a fastening portion; a resilient piece located in the accommodating space and fitting the inner surface of the frame, comprising a fixing portion, a receiving portion, and a a free end and a latching member, the fixing portion is fixed to the frame, and the free end is opposite to each other, the receiving portion is located between the fixing portion and the free end, the latching member is located on the free end, and And extending from the accommodating space to the frame; the cradle is slidably disposed between the elastic piece and the frame, and the protruding portion is protruded from the frame. And being accommodated in the receiving portion; an elastic returning member connecting the frame and the sliding frame; and a hook portion connecting the bracket and removably fastened to the fastening portion, wherein when the sliding frame moves The protruding portion, the elastic returning member and the hook portion are moved between the elastic piece and the frame, and the locking member is pushed into the accommodating space of the frame, the elastic returning member Deformation, and the hook portion is fastened to the fastening portion, so that the elastic reset A storage unit moved back to allow the projection of the restoring force of the receiving portion. The latching mechanism of claim 1, wherein the frame comprises a first plate member and a second plate member, the second plate member being located on one side of the first plate member, wherein the fixing portion is located at the first In a plate member, the fastening portion is a broken inner side of the second plate member. The latching mechanism of claim 1, wherein the hook portion comprises a hook body and a torsion spring, the hook body being rotatably coupled to the bracket for fastening the fastening portion, the torsion spring connection The bracket and the hook body are used to push the hook body toward the fastening portion. The latching mechanism of claim 1, wherein the bracket comprises a first piece and a second piece, the second piece being located on one side of the first piece and interacting with the first piece Orthogonally, wherein the protrusion is formed on the first piece; and the hook portion comprises a spring arm and a hook, one end of the elastic arm is integrally formed to connect the second piece, and the other end is a a free end extending toward the fixing portion, and the hook is located at the free end of the elastic arm for fastening to the fastening portion. The latching mechanism of claim 4, wherein the hook comprises two wedge pieces, the wedge pieces being respectively connected to opposite sides of the elastic arm and extending in the same direction. The latching mechanism of claim 1, further comprising: a grip portion connecting the bracket away from one end of the fixing portion. The cassette mechanism of claim 6, wherein the grip portion is an L-shaped handle. A server device comprising: a rack includes an inner space, a first slide rail, a second slide rail and a fastening hole, wherein the first slide rail is located opposite to the second slide rail in the inner space, and the fastening hole is located a first slide rail; a chassis removably located in the inner space and slidably located on the first slide rail and the second slide rail; and one of claims 1 to 7 The latching mechanism is fixed to the chassis and removably snapped to the securing hole through the latching member, wherein when the latching member is pushed into the receiving space, The snap member is separated from the fastening hole. The server device of claim 8, wherein the chassis further comprises a triggering portion, the triggering portion is an outer edge of the first sliding rail, wherein when the chassis moves into the internal space and contacts the triggering portion The triggering portion disengages the hook portion from the fastening portion, so that the elastic returning member releases the restoring force. The server device of claim 8, wherein the latching mechanism is fixed to an inner side of one of the side panels of the chassis, and is fastened to the securing hole through a through opening of the side panel.