TW201621896A - Mounting device for hard disk drive with tool-less - Google Patents

Abstract

A mounting device for hard disk drive with tool-less is provided. The mounting device has a tray, at least one shrapnel, a backplane, and at least one hard disk driver. The tray has a base and two sidewalls. The shrapnel has a fixing portion and an arm. The backplane is disposed on the base between the sidewalls, and has a first connector and a second connector. The hard disk driver is coupled to the first connector of the backplane.

Description

Toolless installation of hard disk device

The present invention relates to a tool-less mounting hard disk device in the field of servo technology; and more particularly to a tool-less mounting hard disk device in a hard disk rack suitable for a server.

With the popularity of digital living spaces, including the rapid development of the Internet, mobile Internet, wireless power grid, smart TV and other platforms, the global information volume is exploding. In order to better provide network services, major Internet companies are continually building new data centers and procuring more storage servers to store these growing data, while maintaining the hard disk in storage servers. It also seems to be more and more important.

In the server hardware failure, the probability of a hard disk problem is a considerable proportion. When a hard disk has a bad track problem and needs to be replaced, if the traditional lock screw structure is used to fix the hard disk, the maintenance cost will be greatly increased, and more importantly, the related business of the Internet enterprise may be affected, so For server manufacturers, it is important to be able to provide a quick-change hard drive structure; at the same time, the structure needs to be as simple as possible to avoid excessive cost.

The main object of the present invention is to provide a toolless installation hard disk device, Instead of the traditional use of locking screws to secure the hard disk, the device provides a quick-change hard disk-free and tool-free structure; further, the device has a simple structure to avoid excessive cost.

In order to achieve the above object, the present invention provides a toolless mounting hard disk device suitable for being mounted in a hard disk shelf of a server, the hard disk frame comprising a circuit board, the circuit board being provided with a connector, The tool-free mounting hard disk device comprises a tray, at least one elastic piece, a spring arm, a back plate and at least one hard disk; the tray comprises a chassis and two side walls respectively standing on opposite sides of the chassis, and Forming an accommodating space with the chassis; one end of the elastic piece is a fixing portion, and the other end of the elastic piece is a resilient arm, and the extending portion extends in an angle with the extending direction of the elastic arm, and the tail of the elastic arm The positioning end is disposed on the side wall, and the positioning pin is disposed toward the inner side of the tray; the back plate is disposed on the chassis and located between the two side walls. The backplane has at least one first connector and a second connector; the hard disk is disposed in the accommodating space and coupled to the first connector of the backboard; when the tool-free mounting hard disk device is along When a first direction is inserted into the hard disk shelf, The elastic arm of the elastic piece contacts the side wall of the hard disk frame from an open state, and is gradually compressed to be elastically deformed. The elastic arm of the elastic piece is inserted into the side wall of the hard disk frame to be in a closed state, and the positioning pin on the elastic piece is closed. a positioning hole of the hard disk, thereby fixing the hard disk to the tray, so that the second connector of the back plate is inserted into and coupled to the connector of the circuit board of the hard disk frame; When the disc device is pulled away from the hard disk frame in a second direction, the arc portion of the elastic piece causes the toolless mounting hard disk device to slide out of the side wall of the hard disk frame, and the elastic arm of the elastic piece is separated from the closed state by the hard disk. The side wall of the disc frame is gradually restored to elastic deformation, and the elastic arm of the elastic piece is released from the side wall of the hard disk frame, and then the second connector of the back plate is pulled away and disconnected from the hard disk frame. a connector of the circuit board, the positioning pin on the spring is separated from the hard The positioning hole of the disc, thereby canceling the fixing of the hard disk.

In an embodiment of the present invention, when the elastic arm of the elastic piece is in an open state, the hard disk can be inserted into the first connector of the backboard along the first direction, and the hard disk is pulled away along the second direction. The first connector of the backboard.

In one embodiment of the present invention, the tool-less mounting hard disk device further includes at least one light-emitting diode, the light-emitting diode is fixed on an inner side of a front panel of the tray, and the light-emitting diode is coupled to the light-emitting diode The backboard displays the status of the hard disk.

In an embodiment of the present invention, the toolless mounting device includes a turnbuckle handle, an axis of the knob handle is disposed at a corner of the front end of the tray and the side wall, and is fixed on the tray The bottom surface of the chassis is screwed from a first position to a second position when the toolless mounting hard disk device is inserted into the hard disk frame, and the function of the rotary handle and the hard disk frame is solid Providing the tool-free mounting hard disk device; when the tool-free mounting hard disk device is pulled away from the hard disk frame, the button handle is screwed from the second position to the first position, the button handle and the hard disk The function of the rack is to unattach the tool-free mounting hard disk device.

In an embodiment of the present invention, a thumb screw is fixed on an opposite side of the pivotal handle of the button, and when the knob is in the second position, the thumb screw fixes the knob to the tray. front end.

In an embodiment of the invention, the fixing portion of the elastic piece is fixed inside the side wall of the tray, and the elastic arm of the elastic piece extends through the side wall of the tray to the outside of the side wall.

As described above, the present invention has an advantage in that when the toolless mounting hard disk device is inserted into the hard disk frame, the hard disk accommodated in the toolless mounting hard disk device can be automatically fixed, and when the toolless mounting hard disk device is pulled away from the hard disk. The disk can automatically unlock the hard disk; further, by positioning The positioning hole on the side of the pin-engaging hard disk is fixed, and the height of the hard disk is not required, and is a general structure; in addition, the entire tool-free mounting hard disk device is not made of plastic, but is made of a shrapnel made of sheet metal. The fixed hard disk device has a simple structure and low cost; and the tool-free hard disk device can provide maximum storage freedom for the user because of its installation-free feature, thereby facilitating the quick and convenient operation. The purpose of replacing the hard disk; in addition, the tool-free installation of the hard disk device supports the expansion function of multiple hard disks.

100‧‧‧Tool-free installation of hard disk devices

110‧‧‧Tray

111‧‧‧Chassis

112‧‧‧ side wall

113‧‧‧through slot

120‧‧‧Shrap

121‧‧‧Fixed Department

122‧‧‧Bounce arm

123‧‧‧Locating pin

124‧‧‧Arc Department

125‧‧‧Fixed holes

130‧‧‧ Backplane

131‧‧‧First connector

132‧‧‧Second connector

141‧‧‧Rotary handle

142‧‧‧ thumb screw

143‧‧‧Axis

150‧‧‧ Hard disk

160‧‧‧Lighting diode

200‧‧‧ hard disk rack

210‧‧‧ Connector

1 is a schematic structural view of a toolless mounting hard disk device according to an embodiment of the present invention.

Fig. 2 is a schematic view showing the structure of a shrapnel according to an embodiment of the present invention.

3 is a schematic structural view of a hard disk mounted on a backboard according to an embodiment of the invention.

Figure 4 is a schematic view showing the structure of the hard disk in Figure 3 connected to the first connector.

Fig. 5 is a schematic view showing the assembly of the toolless mounting hard disk device in accordance with an embodiment of the present invention.

Fig. 6 is a partially enlarged schematic view showing a portion A in Fig. 5.

Figure 7 is a block diagram showing the structure of a tool-less mounting hard disk device inserted into a hard disk frame in accordance with an embodiment of the present invention.

The above and other objects, features and advantages of the present invention will become more <RTIgt; Furthermore, the directional terms mentioned in the present invention, such as upper, lower, top, bottom, front, rear, left, right, inner, outer, side, surrounding, central, horizontal, horizontal, vertical, longitudinal, axial, Radial, uppermost or lowermost, etc., only refer to the direction of the additional schema. Therefore, the direction of the language used is The invention is illustrated and understood, not by way of limitation.

The specific embodiment of the toolless mounting hard disk device provided by the present invention will be described in detail below with reference to the drawings.

Fig. 1 is a schematic view showing the structure of a toolless mounting hard disk device in an embodiment of the present invention. Fig. 2 is a schematic view showing the structure of a shrapnel in an embodiment of the present invention.

Referring to FIG. 1 and FIG. 2, a tool-less mounting hard disk device 100 is adapted to be mounted in a hard disk frame 200 of a server. The hard disk frame 200 includes a circuit board (not shown). A connector 210 (see FIG. 5) is provided on the circuit board. The toolless mounting hard disk device 100 includes a tray 110 and at least one elastic piece 120. The tray 110 includes a chassis 111 and two side walls 112. The side walls 112 are respectively erected on opposite sides of the chassis 111, so that the chassis 111 and the side wall 112 form an accommodation space for accommodating at least one hard disk 150 ( See Figure 3). In the present embodiment, the toolless mounting hard disk device 100 includes four elastic pieces 120, that is, two pairs of oppositely disposed elastic pieces 120. In other embodiments, the number of the elastic pieces 120 may not be limited thereto.

Referring to FIG. 1 and FIG. 2, each of the elastic pieces 120 has a fixing portion 121 at one end and a resilient arm 122 at the opposite end. The fixing portion 121 is configured to fix the elastic pieces 120 to the inner side of the side wall 112 of the tray 110 . The fixing portion 121 is provided with at least two fixing holes 125. The elastic piece 120 is fixed to the inner side of the side wall 112 through the fixing hole 125 and a connecting member (not shown). The connector can be a threaded or riveted firmware or other connecting firmware. In addition, a slot 113 (see FIG. 6) is disposed on the side wall 112 of the tray 110 at a position relative to the elastic piece 120. The slot 113 extends between the elastic arm 122 and the fixing portion 121, so that the bullet The arm 122 is free to pass through the slot 113 in the side wall 112 and extends beyond the side wall 112 (i.e., extending away from the location of the hard disk 150).

Since the elastic pieces 120 are made of sheet metal, the elastic arm 122 is made better. The elastic deformation coefficient, but the material of the elastic pieces 120 is not intended to limit the present invention. The extending direction of the fixing portion 121 is at an angle to the extending direction of the elastic arm 122, such as a bending angle. When the toolless mounting hard disk device 100 is in a naturally uncompressed state (i.e., when the hard disk frame 200 is not inserted), the elastic arms 122 of the elastic pieces 120 are in an outwardly flared state. When the toolless mounting hard disk device 100 is inserted into the hard disk frame 200 in a first direction, the elastic arms 122 of the elastic pieces 120 are gradually compressed from the open state to the side wall contacting the hard disk frame 200 to generate elasticity. Deformed and tends to be in a closed state; when the elastic arm 122 of the elastic piece 120 is inserted into the side wall of the hard disk frame 200, it is in a closed state. When the toolless mounting hard disk device 100 is pulled away from the hard disk frame 200 in a second direction, the elastic arms 122 of the elastic pieces 120 gradually return to elastic deformation from the closed state to the side wall of the hard disk frame 200 until The elastic arms 122 of the elastic pieces 120 are released from the side wall of the hard disk frame 200.

Referring to FIG. 2, the rear end of the elastic arm 122 is provided with a positioning pin 123 projecting outwardly and approximately perpendicular to the elastic arm 122. The positioning pin 123 is disposed toward the inner side of the tray 110. When the toolless mounting hard disk device 100 is inserted into the hard disk frame 200 in a first direction (for example, the right direction), and the elastic arms 122 of the elastic pieces 120 are inserted into the side wall of the hard disk frame 200, the closed state is in a closed state. The positioning pin 123 on the elastic piece 120 is engaged with a positioning hole (not shown) of the hard disk 150 through a through slot 113 (shown in FIG. 6 ) disposed on the side wall 112 of the tray 110 to The hard disk 150 is fixed. When the toolless mounting hard disk device 100 is pulled away from the hard disk frame 200 in a second direction (for example, the left direction), the positioning pins 123 on the elastic pieces 120 are separated from the positioning holes of the hard disk 150, thereby being able to cancel. The hard disk 150 is fixed. In other embodiments, when the fixing portion 121 of the elastic piece 120 is disposed outside the sidewall 112, the slot size of the slot 113 only needs to enable the positioning pin 123 to engage the hard disk through the slot 113. The positioning hole on the side of 150 can be used. It should be noted that, in the practical operation, as long as the positioning pin 123 of the elastic piece 120 can engage the positioning hole on the side of the hard disk 150 to fix The hard disk 150 is sufficient for the tray 110, and the height of the hard disk 150 is not required. Therefore, the elastic sheets 120 have versatility.

Continuing to refer to FIG. 2, the elastic arm 122 further includes a circular arc portion 124 disposed at a rear end of the elastic arm 122 when the tool-free mounting hard disk device 100 is in a second direction (eg, When the hard disk frame 200 is pulled away from the left side, the arc portion 124 is always in contact with the side wall of the hard disk frame 200, so that the toolless mounting hard disk device 100 smoothly slides out of the hard disk frame 200. The side wall is configured to ensure that the toolless mounting hard disk device 100 does not receive a large resistance due to the side wall (not shown) of the hard disk frame 200, thereby enabling the toolless mounting hard disk device 100 to be flexibly and conveniently separated. The hard disk frame 200.

Continuing to refer to FIG. 1 , the toolless mounting device 100 further includes at least one backplane 130 disposed on the chassis 111 between the two sidewalls 112. The backplane 130 has at least one A connector 131 and a second connector 132. When at least one hard disk 150 is disposed in the accommodating space of the toolless mounting device 100, the hard disk 150 is coupled to the first connector 131 of the backplane 130, as shown in FIG. In other embodiments, each of the hard disks 150 is coupled to each of the first connectors of the backplane 130 when the plurality of hard disks 150 are disposed in the accommodating space of the toolless mounting device 100. 131, then the plurality of hard disks 150 can be coupled in series. Thereby, the hard disk 150 disposed in the toolless mounting hard disk device 100 is made expandable by the plurality of first connectors 131 provided on the back plate 130.

In addition, when the toolless mounting hard disk device 100 is inserted into the hard disk frame 200 in a first direction, the second connector 132 of the back plate 130 is inserted into and coupled to the connector of the circuit board of the hard disk frame 200. 210. When the toolless mounting hard disk device 100 is pulled away from the hard disk frame 200 in a second direction, the second connector 132 of the backing plate 130 pulls away and disconnects the circuit board coupled to the hard disk frame 200. Connector 210.

It should be noted that, in a practical operation, the hard disk 150 is pre-fixed to the first connector 131 on the backplane 130 of the toolless mounting hard disk device 100, and passes through the positioning pin 123 of the oppositely disposed elastic piece 120. The positioning hole of the hard disk 150 is aligned, and is completely fixed after the toolless mounting hard disk device 100 is inserted into the hard disk frame 200. In the present embodiment, the toolless mounting hard disk device 100 is provided with two hard disks 150, and then the two hard disks 150 are respectively fixed by providing two pairs of oppositely disposed elastic pieces 120. In other embodiments, when two or more hard disks 150 are disposed in the toolless mounting hard disk device 100, the two or more hard disks 150 are respectively disposed by providing two or more pairs of oppositely disposed elastic pieces 120. Fixed. Furthermore, the plurality of elastic pieces 120 on the side wall 112 of the tray 110 are flush, so as to ensure that the heights of the hard disks 150 fixed by each pair of the elastic pieces 120 are identical to each other.

Optionally, the tool-less mounting device 100 further includes a turn-on handle 141. The pivoting handle 141 is disposed at a corner of the front end of the tray 110 and the side wall 112, and is fixed to the tray 110. The bottom of the chassis 111 is on the bottom. When the toolless mounting hard disk device 100 is inserted into the hard disk frame 200, at this time, the button handle 141 is from a first position (for example, the arm extending direction of the button handle 141 is substantially parallel to the side wall 112) The extending direction) is screwed to a second position (for example, the arm extending direction of the button handle 141 is substantially parallel to the extending direction of the front end of the tray 110), and the action of the button handle 141 and the hard disk frame 200 is solid The tool-less installation of the hard disk device 100 is provided. When the toolless mounting hard disk device 100 is pulled away from the hard disk frame 200, at this time, the button handle 141 is from the second position (for example, the arm extending direction of the button handle 141 is substantially parallel to the front end of the tray 110 The extending direction) is screwed to the first position (for example, the arm extending direction of the button handle 141 is substantially parallel to the extending direction of the side wall 112), and the function of the button handle 141 and the hard disk frame 200 is In addition to fixing the toolless mounting hard disk device 100. Further, a thumb screw 142 is fixedly disposed on the opposite side of the pivot 143 of the button 141. When the button 141 is in the second position, the thumb screw 142 fixes the button 141 to the tray 110. Front end.

Optionally, the toolless mounting hard disk device 100 further includes a light emitting diode 160 disposed on an inner side of the front panel of the tray 110. The light emitting diode 160 is coupled to the back plate 130 for displaying the state of the hard disk 150.

Figure 3 is a schematic view showing the structure of a hard disk mounted on a backplane in an embodiment of the present invention. Figure 4 is a schematic view showing the structure of the hard disk in Figure 3 connected to the first connector.

When the elastic arm 122 of the elastic piece 120 is in an open state, the hard disk 150 can be inserted into the first connector 131 of the back plate 130 along the first direction. Specifically, referring to FIGS. 3 and 4, first, the hard disk 150 is vertically placed on the back plate 130, as shown by the vertical downward arrow shown in FIG. Next, each hard disk 150 is pushed in the first direction, as indicated by the rightward arrow in FIG. 3, such that one end of each hard disk 150 is connected to the first connector 131 of the back plate 111. As can be seen from Figures 3 and 4, assembling the hard disk 150 in the above manner is quite convenient and quick. If it takes 3 seconds to install a hard disk 150, it takes 6 seconds to install two hard disks 150, and so on.

Fig. 5 is a schematic view showing the assembly of the toolless mounting hard disk device in an embodiment of the present invention. Fig. 6 is a partially enlarged schematic view showing a portion A in Fig. 5. Figure 7 is a block diagram showing the structure of the toolless mounting hard disk device inserted into the hard disk frame in an embodiment of the present invention.

Referring to FIGS. 5 to 7, after the hard disk 150 is mounted on the back plate 130, the toolless mounting hard disk device 100 is assembled to the hard disk frame 200. When the toolless mounting hard disk device 100 is inserted into the hard disk frame 200 in the first direction, as shown in the portion A in FIG. 5, the side wall (not shown) of the hard disk frame 200 has a restraining effect, so that The elastic arm 122 of the elastic piece 120 Pressed by a force toward the position of the hard disk 150, and then elastically deformed from an open state to a gradually compressed state, and tends to be closed until the elastic arm 122 of the elastic piece 120 is inserted into the side wall of the hard disk frame 200. After a closed state. Then, the positioning pin 123 of the elastic arm 122 automatically engages the positioning hole of the hard disk 150 through the through slot 113, thereby fixing the hard disk 150 to the tray 110, and no other card position is needed in the process. structure.

It can be seen from FIG. 7 and FIG. 1 that the four elastic pieces 120 are closed under the action of the side wall of the hard disk frame 200, and are in a closed state, and the positioning pins 123 on each elastic piece 120 are engaged with the corresponding hard disk 150. Positioning holes to fix the corresponding hard disk 150. Finally, the knob handle 141 is screwed from the first position to the second position, and the thumb screw 142 is screwed to fix the knob handle 141 to the front end of the tray 110, so that the knob handle 141 and the hard The disc tray 200 functions to fix the toolless mounting hard disk device 100.

What has been described above is the case where the hard disk 150 and the toolless mounting hard disk device 100 are assembled. The case of disassembling the hard disk 150 and the toolless mounting of the hard disk device 100 is similar to the assembly, and it is only necessary to invert the above steps. First, the thumb screw 142 is loosened and the knob handle 141 is rotated. The knob handle 141 is screwed from the second position to the first position, and the button handle 141 acts on the hard disk frame 200 to release the tool. The hard disk device 100 is mounted. Then, when the toolless mounting hard disk device 100 is pulled away from the hard disk frame 200 in the second direction, the arc portion 124 of the elastic piece 120 causes the toolless mounting hard disk device 100 to smoothly slide out of the hard disk frame. The side wall of the elastic member 122 of the elastic piece 120 is gradually elastically deformed from the closed state to the side wall of the hard disk frame 200 until the elastic arm 122 of the elastic piece 120 is separated from the side wall of the hard disk frame 200. Said open state. Then, the second connector 132 of the backplane 130 pulls away and disconnects the connector 210 of the circuit board coupled to the hard disk frame 200, and the positioning pin 123 on the elastic piece 120 is disengaged from the positioning hole of the hard disk 150. ,From The hard disk 150 is unset. After the toolless mounting hard disk device 100 is completely pulled away from the hard disk frame 200, that is, when the elastic arm 122 of the elastic piece 120 is in an open state, the hard disk 150 can be pulled away in the second direction (for example, to the left direction). The first connector 131 of the backplane 130 is such that the hard disk 150 is disconnected from the first connector 131 so that the hard disk 150 can be replaced. The entire process of replacing the hard drive is quick and easy and avoids the use of tools.

It can be seen from the above that the present invention can realize that when the toolless mounting hard disk device 100 is inserted into the hard disk frame 200, the hard disk 150 accommodated on the backboard can be automatically fixed, and when the toolless mounting hard disk device 100 is pulled out from the hard disk. When the rack is 200, the hard disk 150 can be automatically unlocked. In addition, the tool-less mounting hard disk device 100 can provide the user's storage freedom to the utmost extent because of its self-installation-free feature, thereby achieving the purpose of replacing the hard disk 150 conveniently and quickly.

The present invention has been disclosed in its preferred embodiments, and is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

100‧‧‧Tool-free installation of hard disk devices

110‧‧‧Tray

111‧‧‧Chassis

112‧‧‧ side wall

120‧‧‧Shrap

130‧‧‧ Backplane

131‧‧‧First connector

132‧‧‧Second connector

141‧‧‧Rotary handle

142‧‧‧ thumb screw

143‧‧‧Axis

160‧‧‧Lighting diode

Claims (6)

A tool-less mounting hard disk device for mounting in a hard disk holder of a server, the hard disk frame comprising a circuit board, the circuit board being provided with a connector, the tool-free mounting hard disk device comprising: a tray The utility model comprises a bottom plate and two side walls respectively erected on opposite sides of the chassis and forming an accommodating space with the chassis; at least one elastic piece, one end of the elastic piece is a fixing portion, and the other end of the elastic piece is opposite a resilient arm, the extending portion of the fixing portion is at an angle to the extending direction of the elastic arm, the tail end of the elastic arm is provided with a positioning pin and a circular arc portion, and the fixing portion is fixed on the sidewall along the extending direction thereof The positioning pin is disposed toward the inner side of the tray; a back plate is disposed on the chassis and located between the two side walls, the back plate has at least a first connector and a second connector; and at least one hard disk a first connector disposed in the accommodating space and coupled to the backboard; when the toolless mounting hard disk device is inserted into the hard disk frame in a first direction, the elastic arm of the elastic piece is opened from one The state contacts the side wall of the hard disk frame, and gradually The elastic deformation of the elastic body, the elastic arm of the elastic piece is inserted into the side wall of the hard disk frame to be in a closed state, and the positioning pin on the elastic piece engages with a positioning hole of the hard disk, thereby fixing the hard disk to the tray, so that the hard disk is fixed on the tray The second connector of the backboard is inserted into and coupled to the connector of the circuit board of the hard disk frame; when the toolless mounting hard disk device is pulled away from the hard disk frame in a second direction, the circular arc of the elastic piece Part of the tool-free mounting hard drive device slides out of the side of the hard drive a wall, the elastic arm of the elastic piece is separated from the side wall of the hard disk frame from the closed state, and the elastic deformation is gradually restored, and the elastic arm of the elastic piece is opened from the side wall of the hard disk frame, and then the second side of the rear plate is opened. The connector pulls away and disconnects the connector of the circuit board coupled to the hard disk frame, and the positioning pin on the elastic piece is separated from the positioning hole of the hard disk, thereby canceling the fixing of the hard disk. The tool-free hard disk device according to claim 1, wherein when the elastic arm of the elastic piece is in an open state, the hard disk can be inserted into the first connector of the back plate along the first direction, the hard disk The first connector of the backplane is pulled away in the second direction. The tool-free hard disk device of claim 1 further includes at least one light-emitting diode fixed to an inner side of a front panel of the tray, the light-emitting diode being coupled to the light-emitting diode The back panel displays the status of the hard drive. The tool-free mounting hard disk device according to the first aspect of the patent application, further comprising a rotary handle, an axis of the rotary handle is disposed at a corner of the front end of the tray and the side wall, and is fixed on the chassis of the tray On the bottom surface, when the toolless mounting hard disk device is inserted into the hard disk frame, the button handle is screwed from a first position to a second position, and the button handle and the hard disk frame function to fix the Tool-free mounting of the hard disk device; when the tool-free mounting hard disk device is detached from the hard disk frame, the button handle is screwed from the second position to the first position, the button handle and the hard disk frame The function is to unattach the tool-free installation of the hard disk device. The tool-free mounting device of claim 4, wherein a thumb screw is fixed to the opposite side of the pivoting handle, and when the knob is in the second position, the thumb screw is fixed Screw the handle to the front of the tray. The tool-free mounting of the hard disk device according to claim 1, wherein the fixing portion of the elastic piece is fixed inside the side wall of the tray, and the elastic arm of the elastic piece extends beyond the side wall through the side wall of the elastic plate.