TWI855856B - Buckle device - Google Patents

Abstract

The present invention relates to a locking device, comprising: an outer shell, which comprises a cover and a back plate, and a storage chamber and a receiving groove are provided on the inner side of the cover, and a press-fit adjustment piece is provided in the receiving groove, and the hook portion of the press-fit adjustment piece is inserted through the channel in the receiving groove and abuts against the surface of the cover; a pivot is inserted between the cover and the back plate; a screw body and a rotary reset piece, both of which are sleeved outside the pivot, and the screw body has a hook extending from the outer shell and can be rotatably locked in the chassis, and the hook portion of the press-fit adjustment piece adjusts the fit density of the cover, the screw body and the back plate according to whether it abuts against the inner wall of the chassis.

Description

Buckle device

The present invention provides a locking device, in particular a locking device that is locked on two side plates of a movable frame, and the movable frame is located on two sides of a tray and can be rotated, and the tray is stored in a server chassis. When the movable frame is stored on two sides of the tray, the inner wall surface of the chassis presses against the hook part located on the surface of the cover, and the hook part is squeezed and deformed to adjust the pressing. The two fixing parts of the component are outwardly separated from the receiving groove and pressed against one side of the screw button body, so that the two sides of the screw button body are pressed and tightly adhered by the cover body and the back plate without rotating; when the movable frame is rotated and opened from the support box to a predetermined angle, the hook part on the surface of the cover body is not held by the inner wall of the chassis, and the hook part of the press-fit adjustment component is elastically reset to retract the two fixing parts. The two sides of the rotating buckle body are not tightly pressed against the cover body and the back plate, and the rotating buckle body rotates downward and is locked in the positioning frame at the bottom of the chassis to form a fixed state. When the movable frame is opened to the maximum angle, the tray can be dragged outward to move horizontally a predetermined distance and expose the top of the accommodation space, that is, the computer parts installed in the tray can be placed outside. The parts can be repaired or replaced, and after completion, the movable frame can be pushed back to the two sides of the tray to form a mechanism with quick disassembly and assembly; in addition, the pivots for the tray and the buckle device to rotate are not in the same position, which has the advantages of saving the space required for the rotating mechanism and increasing the distance between the force application point and the pivot of the buckle device to form a larger lever ratio and make it easier to apply force.

According to the current trend of Internet cloud technology and the Internet of Things, the server technology of computers and industrial computers is growing at a rapid pace. Its development trend is mainly towards strong computing functions, fast speed and small size. In addition, many electronic devices or equipment will use computers to control their actions or execute functions, making computers occupy an extremely important position. When processing huge amounts of data, the servers of commercial computers urgently need high-density and large amounts of memory storage devices (such as hard drives, solid-state drives, optical drives, or burners, etc.) to store and read data. Therefore, a large amount of memory storage devices are usually placed inside computer hosts, server cases, storage or electronic cabinets, etc. to increase storage capacity.

Furthermore, since a general computer host, server hard drive, storage or electrical chassis has a large number of memory storage devices, when the user performs maintenance or replacement operations on each memory storage device, the replacement speed between the memory storage devices installed inside the hard drive must be simpler and faster, and the assembly structure and component manufacturing costs must also be taken into consideration to meet the costs and needs of the large number of memory storage devices. When the hard drive is in operation for a long time, the stability of the overall system and the convenience of maintenance and replacement must be considered, and the user's operation must be convenient, thereby reducing downtime and manpower losses. However, some of the memory storage devices currently used are fixed in the hard disk by screw locking, and the screws are passed through the holes on the rack and then aligned and locked into the screw holes of the memory storage device. This screw locking method not only requires the use of a large number of screws, but also requires the removal and installation of multiple screws one by one before disassembly and installation, resulting in a long assembly time and a significant increase in downtime maintenance time. If the hard disk is filled with interface cards, memory storage devices, power cables, cables and other components, it is very difficult to insert tools to lock or unlock. It is inconvenient and may even cause the screw to fall off during locking or unlocking and be lost. If the screw is not the right size and is locked with force, it is easy to damage the screw hole on the memory storage device, which is not conducive to assembly or disassembly. In addition, server hard drives are widely used in telecommunications or storage systems and data center computer rooms. When a single memory storage device can be repaired and replaced more easily, the number of tens of thousands of memory storage devices installed in the server in the computer room can be greatly increased, and it can be quickly disassembled for maintenance and replacement. This is a topic that relevant manufacturers engaged in this industry are eager to study.

Therefore, in view of the above problems and deficiencies, the inventor collected relevant information and, after multiple evaluations and considerations, designed the invention of this buckle device.

The main purpose of the present invention is to provide a locking device, including: an outer shell, which includes a cover and a back plate, and has a storage chamber and a receiving groove on the inner side of the cover, and the receiving groove is provided with a press-fit adjustment piece, and the hook portion of the press-fit adjustment piece is penetrated through the channel in the receiving groove and is held and positioned on the surface of the cover; a pivot, which is penetrated between the cover and the back plate; a screw body and a rotating reset piece, both of which are sleeved on the outside of the pivot, and the screw body has a hook that extends out of the outer shell and can be rotatably locked in the chassis, and the hook portion of the press-fit adjustment piece adjusts the fit density of the cover, the screw body and the back plate according to whether it is held against the inner wall of the chassis. By means of the above-mentioned structure, the locking device is locked on the two side plates of the movable frame, and the movable frame is located on the two sides of the tray and can be rotated, and the tray is then stored in a server chassis. When the movable frame is stored on the two sides of the tray, the inner wall surface of the chassis presses against the hook part located on the surface of the cover, and the hook part is squeezed and deformed, so that the two fixing parts of the press-fit adjustment piece are outward. The cover body and the back plate are pressed against one side of the screw button body to form a pressure-fitting and tight fit between the two sides of the screw button body without causing rotation. When the movable frame is rotated and opened from the support box to a predetermined angle, the hook part on the surface of the cover body is not pressed against the inner wall of the chassis, and the hook part of the pressure-fitting adjustment piece is elastically reset to re-accommodate the two fixing parts in the receiving groove. The two sides of the screw button body are not tightly pressed against the cover body and the back plate, and the screw button body rotates downward and snaps into the positioning frame at the bottom of the chassis to form a fixed state. When the movable frame is opened to the maximum angle, the tray can be dragged outward to move horizontally a predetermined distance and expose the top of the storage space, that is, the computer parts installed inside the tray can be repaired or replaced. After completion, the movable frame can be pushed back to the two sides of the tray to form a mechanism with quick disassembly and assembly. In addition, the pivots for the rotation of the tray and the buckle device are not in the same position. The advantage is that the space required for the rotation mechanism is saved, and the distance between the force application point and the pivot of the buckle device is increased to form a larger lever ratio, which can easily apply force.

The secondary purpose of the present invention is that the cover body is formed with a first stopper and a second stopper on both sides of the bottom opening of the storage chamber for the turnbuckle body to rotate to the first position and the second position dead point.

Another purpose of the present invention is to form a slope adjacent to the channel and a narrow positioning groove adjacent to the slope at the surface of the cover body for the hook portion of the press-fit adjustment piece to abut and position.

Another purpose of the present invention is that the compression adjustment member is composed of a torsion spring, and the two ends of the compression adjustment member form a fixed portion that elastically abuts against the wall of the accommodating groove, and the two fixed portions are bent and extended toward the inner sides to form the hook-shaped hook portion.

Another purpose of the present invention is that the rotary reset member is composed of a torsion spring, and the center of the rotary reset member has an annular portion sleeved on the outside of the pivot and a through hole in the annular portion, and the annular portion extends to both ends with a fixed end penetrated in the positioning hole of the knob body and a movable end abutted against the limit frame.

Another purpose of the present invention is that the turn button body is composed of a plate body, and the turn button body is formed with a wide plate body at the place where the pivot is passed through and has a guide round corner on the top side, and the guide round corner extends the hook in a narrow hook shape on the other side where the pivot is passed through, and the front end of the hook is formed with an inclined guide bevel portion, and the hook is formed with a supporting edge that can be supported on the first stop portion of the cover body near the guide round corner.

1: Locking device

11: Shell

111: Cover

1110: Storage room

1111: Keyhole

1112: Container

1113: Channel

1114: Limiting frame

1115: First stopper

1116: Second stopper

1117: Slope

1118: Positioning slot

1119: Countersunk shaft groove

112: Back panel

1121: Shaft groove

12: Press-fit adjustment piece

121: Hook and buckle part

122: Fixed part

13: Pivot

131:Head

132: Rod

14: Turn-on body

141: Positioning hole

142: Fillet corners

143: Hook

144: Inclined guide part

145: Resistance

15: Rotary reset piece

151: Ring-shaped part

1510: Perforation

152: Fixed end

153:Activity terminal

16: Fasteners

2: Movable rack

21: Side panels

211: shaft hole

212: Limiting convex part

213: Supporting arc groove

214:Connection plate

215:Handle

3: Tray box

30: Storage space

31: Shaft seat

32:Blocking body

4: Chassis

41: Positioning groove

411: Blocking side

42: Positioning frame

421: Contact fate

[Figure 1] is a three-dimensional external view of an embodiment of the buckle device of the present invention.

[Figure 2] is a three-dimensional partial exploded view of an embodiment of the buckle device of the present invention.

[Figure 3] is a three-dimensional partial exploded view of the buckle device, movable frame and tray of the present invention.

[Figure 4] is a partial exploded view of the buckle device, movable frame and tray of the present invention from another perspective.

[Figure 5] is a three-dimensional exploded view of the buckle device of the present invention.

[Figure 6] is a three-dimensional exploded view of the buckle device of the present invention from another perspective.

[Figure 7] is the first action diagram of the lock device installed on the movable frame of the present invention for opening.

[Figure 8] is the second action diagram of the lock device installed on the movable frame of the present invention for opening.

[Figure 9] is the third action diagram of the present invention of opening the lock device installed on the movable frame.

[Figure 10] is the fourth action diagram of the buckle device installed on the movable frame of the present invention for opening.

[Figure 11] is the first action diagram of the locking device installed on the movable frame of the present invention being closed.

[Figure 12] is a second action diagram of the locking device installed on the movable frame of the present invention being closed.

In order to achieve the above-mentioned purpose and effect, the technical means and structure adopted by the present invention are described in detail in the following figure for the preferred embodiment of the present invention to facilitate a complete understanding.

Please refer to Figures 1 to 6, which are respectively a three-dimensional external view of an embodiment of the buckle device of the present invention; a three-dimensional partial exploded view of an embodiment of the buckle device; a three-dimensional partial exploded view of the buckle device, the movable frame and the tray; a three-dimensional partial exploded view of the buckle device, the movable frame and the tray from another angle; a three-dimensional exploded view of the buckle device and a three-dimensional exploded view of the buckle device from another angle. As can be clearly seen from the figure, a tray 3 is stored in a chassis 4 of a server, and a rotatable movable frame 2 is provided on both sides of the tray 3. The two sides of the movable frame 2 are respectively provided with a locking device 1 that is locked in the chassis 4 and forms a fixed structure. The locking device 1 of the present invention mainly includes: an outer shell 11, a press-fit adjustment member 12, a pivot 13, a screw body 14 and a rotating return The positioning member 15, all its components and features are described in detail as follows: The housing 11 includes a cover 111 and a back plate 112 fixed by a plurality of fasteners 16 and corresponding lock holes 1111, and a recessed storage chamber 1110 is provided on the inner side of the cover 111, and a recessed receiving groove 1112 is further provided in the receiving chamber 1110. It is used to accommodate and fix a compression adjustment member 12. The hook portion 121 of the compression adjustment member 12 is bent through the channel 1113 provided in the receiving groove 1112 and is held and positioned on the surface of the cover body 111. The fastener 16 is a rivet or a screw; and the lock hole 1111 is composed of a through hole with or without internal threads.

The hinge 13 is disposed between the cover 111 and the back plate 112.

The turn button body 14 and the rotary reset member 15 are both sleeved outside the pivot 13, and the two ends of the rotary reset member 15 are respectively positioned in the turn button body 14 and at the limit frame 1114 at the edge of the storage chamber 1110, and the turn button body 14 has a hook 143 extending out of the outer shell 11 and rotatably locked in the chassis 4, and the hook portion 121 of the compression adjustment member 12 adjusts the fit density of the cover 111, the turn button body 14 and the back plate 112 according to whether they are against the inner wall surface of the chassis 4.

The cover 111 is provided with a first stopper 1115 and a second stopper 1116 on both sides of the bottom opening of the storage chamber 1110 for the turn button 14 to rotate to the first position and the second position dead point; and the surface of the cover 111 is provided with a slope 1117 adjacent to the channel 1113 and a narrow positioning groove 1118 adjacent to the slope 1117 for the hook portion 121 of the press-fit adjustment member 12 to abut and position.

The above-mentioned compression adjustment member 12 is composed of a torsion spring, and the two ends of the compression adjustment member 12 form a fixing portion 122 elastically supported on the wall of the accommodating groove 1112, and the two fixing portions 122 are bent and extended toward the opposite inner sides to form the hook-shaped hook portion 121.

The pivot shaft 13 includes a head portion 131 located in the countersunk shaft groove 1119 of the cover body 111, and a rod 132 passing through the turnbuckle body 14 and fixed in the shaft groove 1121 of the back plate 112.

The above-mentioned rotary reset member 15 is composed of a torsion spring. The center of the rotary reset member 15 has an annular portion 151 which is sleeved on the outside of the pivot 13 and has a through hole 1510 in the annular portion 151. Extending from the annular portion 151 to both ends are fixed ends 152 which are penetrated in the positioning hole 141 of the rotary buckle body 14 and movable ends 153 which are supported on the limit frame portion 1114.

The above-mentioned turn button body 14 is composed of a plate body, and the turn button body 14 is formed with a wide plate body at the place where the pivot 13 is passed through and has a guide corner 142 on the top side. The guide corner 142 extends a narrow hook-shaped hook 143 on the other side of the pivot 13, and the front end of the hook 143 is formed with an inclined guide portion 144, and the hook 143 is formed with a supporting edge 145 adjacent to the guide corner 142, which can be supported by the first stop portion 1115 of the cover body 111.

The tray 3 and the movable frame 2 are each provided with a shaft seat 31 and a shaft hole 211 for the shaft seat 31 to penetrate, so that the movable frame 2 can rotate outside the tray 3 and the tray 3 is formed with a storage space 30 for installing computer parts (not shown in the figure). The tray 3 has two sides near the shaft seat 31 for the movable frame 2 to open to the maximum angle. The stop body 32 is formed to block the dead point. The movable frame 2 is provided with a limit protrusion 212 locked to the chassis 4 and a supporting arc groove 213 adjacent to the limit protrusion 212 at the bottom of the two side plates 21 where the shaft hole 211 is provided. The top of the two side plates 21 has a horizontally connected connecting plate 214 and a handle 215 is provided on the surface of the connecting plate 214.

The bottom two sides of the above-mentioned chassis 4 further include positioning grooves 41 for the two limiting protrusions 212 of the movable frame 2 to extend into and position, and the front end of the positioning groove 41 has a stopper side 411 for the arc groove 213 to contact and position; the bottom two sides of the chassis 4 are further provided with a positioning frame 42 in a hollow shape for the hook 143 of the screw button body 14 to do a locking and positioning, and the front end of the positioning frame 42 has a contact edge 421 for the movable frame 2 to resist the inclined guide part 144 of the hook 143 when rotating and closing.

When the lock device 1 of the present invention is to be assembled, the hook portion 121 of the compression adjustment member 12 is first inserted into the channel 1113 of the receiving groove 1112 of the cover 111, so that the free end of the hook portion 121 is held in the positioning groove 1118, and the two fixing portions 122 are naturally received in the receiving groove 1112. Then, the fixing end 152 of the rotary reset member 15 is inserted into the positioning hole 141 of the rotary lock body 14, and the rotary lock body 14 and the rotary reset member 15 are placed on the cover. 111 and the back plate 112, and the movable end 153 is held against the limit frame 1114, and the rod 132 of the pivot 13 is aligned with the countersunk shaft groove 1119, the screw button 14, the through hole 1510 of the rotary reset member 15 and the shaft groove 1121, and then a plurality of fasteners 16 are inserted into the corresponding lock holes 1111 (the lock holes of the back plate 112 are not marked) of the cover 111 and the back plate 112 to form a fixation, and the assembly of the lock device 1 is completed by the above method.

Please refer to Figures 7 to 10, which are multiple action diagrams of the locking device installed on the movable frame of the present invention for opening, wherein the locking device 1 is locked at the two side panels 21 of the movable frame 2, and the movable frame 2 is located on the two sides of the tray 3 and can be rotated, and the tray 3 is stored in a chassis 4 of a server. When the movable frame 2 is stored on the two sides of the tray 3, the inner wall surface of the chassis 4 presses against the hook portion 121 located on the surface of the cover 111, and the hook portion 121 is squeezed and deformed, so that the two fixing portions 122 of the compression adjustment member 12 are outwardly separated from the receiving groove 1112 and pressed against the rotating buckle body 1 4, so that the two sides of the turn button body 14 are pressed and tightly attached by the cover body 111 and the back plate 112 without rotating; the user applies force to the handle 215 on the movable frame 2 to rotate it downward, at this time, the limiting protrusion 212 of the movable frame 2 is located in the positioning groove 41 of the chassis 4 without interfering with other mechanisms, and the hook 143 of the locking device 1 is locked in the positioning frame 42 of the chassis 4, and the abutting edge 145 of the turn button body 14 is abutted against the first stopper 1115 of the cover body 111 (as shown in Figures 7 and 8); when the movable frame 2 is rotated from the support box 3 to the predetermined position, When the hook portion 121 on the surface of the cover 111 is not supported by the inner wall of the case 4, the hook portion 121 of the compression adjustment member 12 is elastically reset to retract the two fixing portions 122 into the receiving groove 1112, and the two sides of the screw button body 14 are not tightly pressed against the cover 111 and the back plate 112, and the screw button body 14 is rotated, and the hook 143 of the screw button body 14 is rotated downward (during the downward rotation of the movable frame 2, the guide fillet 142 of the screw button body 14 contacts the first stop portion 1115 of the cover 111 to generate a damped rotation) and is locked and positioned on the positioning frame 4 at the bottom of the case 4. 2 to form a fixed state and the movable frame 2 is opened to the maximum angle, at this time, the side plate 21 of the movable frame 2 contacts the blocking body 32 of the tray 3 to form an interference block, and the front end of the limiting protrusion 212 on the bottom side of the side plate 21 abuts against the arc groove 213 to contact the front end blocking side 411 of the positioning groove 41 of the chassis 4 to form an interference block, so that the tray 3 can be dragged outward horizontally for a predetermined distance and the top side of the accommodating space 30 is exposed (as shown in Figures 9 and 10), that is, the computer parts installed in the tray 3 are repaired or replaced. After completion, the movable frame 2 can be pushed back to the two sides of the tray 3.

Please refer to Figures 11 and 12, which are multiple action diagrams of the locking device installed on the movable frame of the present invention. When the movable frame 2 is to be pushed back to the two sides of the tray 3, the user applies force to the handle 215 on the movable frame 2 to rotate it upward. At this time, the guide bevel 144 of the front edge of the screw button body 14 contacts the contact edge 421 of the positioning frame 42 of the chassis 4, and the screw button is then turned. The body 14 generates an upward sliding force and temporarily separates from the positioning frame 42 of the chassis 4 to form a damped rotation. At the same time, the side plate 21 of the movable frame 2 rotates away from the blocking body 32 to escape interference; the limiting protrusion 212 on the bottom side of the side plate 21 also moves away from the front end blocking side 411 of the positioning groove 41 to escape interference (as shown in Figure 11), and the movable frame 2 moves upward. During the rotation process, the rounded corner 142 of the turn button body 14 contacts the first stopper 1115 of the cover 111 to generate a damped rotation, and the abutting edge 145 of the turn button body 14 abuts against the first stopper 1115 of the cover 111, so that the turn button body 14 can be positioned in the housing 11 without rotating and the hook 143 can be buckled back into the positioning frame of the chassis 4. 42 is positioned, and at the same time, the movable frame 2 is also pushed back to the two sides of the tray 3, so that the inner wall of the chassis 4 is pressed against the hook portion 121 on the surface of the cover 111 again, so that the two sides of the screw body 14 are pressed tightly by the cover 111 and the back plate 112 without rotating (as shown in Figure 12), and a mechanism with quick disassembly and assembly is formed by the above.

Another advantage of the present invention is that the shaft seat 31 of the tray 3 and the pivot 13 of the buckle device 1 are not rotated at the same position, which saves the space required for the rotating mechanism and increases the distance between the force application point and the pivot 13 of the buckle device 1 to form a larger lever ratio, making it easier to apply force.

The above is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all simple modifications and equivalent structural changes made by using the contents of the present invention's specification and drawings should be included in the patent scope of the present invention and should be stated.

In summary, the buckle device of this invention can achieve its effect and purpose when used. Therefore, this invention is truly an invention with excellent practicality. In order to meet the application requirements of invention patents, an application is filed in accordance with the law. I hope that the review committee will approve this case as soon as possible to protect the inventor's hard work. If the review committee of the Jun Bureau has any doubts, please feel free to write to instruct. The inventor will do his best to cooperate and will be grateful for the convenience.

1: Locking device

11: Shell

111: Cover

1111: Keyhole

1113: Channel

1117: Slope

1118: Positioning slot

1119: Countersunk shaft groove

112: Back panel

1121: Shaft groove

12: Press-fit adjustment piece

121: Hook and buckle part

122: Fixed part

13: Pivot

131:Head

132: Rod

14: Turn-on body

141: Positioning hole

142: Fillet corners

143: Hook

144: Inclined guide part

145: Resistance

15: Rotary reset piece

151: Ring-shaped part

1510: Perforation

152: Fixed end

153:Activity terminal

16: Fasteners

Claims (18)

A locking device is provided, wherein a preset tray is stored in a preset chassis of a preset server, a preset movable frame is provided on both sides of the preset tray, and a locking device is provided on both sides of the preset movable frame to be locked in the preset chassis and fixed, the locking device comprises: an outer shell, which comprises a cover body and a back plate fixed by a plurality of fasteners and corresponding lock holes, a recessed storage chamber is provided on the inner side of the cover body, and a storage chamber is further recessed in the storage chamber. The receiving groove is used to receive and fix a press-fit adjustment member, and the hook portion of the press-fit adjustment member is bent and penetrated through the channel provided in the receiving groove and is held and positioned on the surface of the cover body; a pivot is penetrated between the cover body and the back plate; and a turn button body and a rotary reset member, both of which are sleeved on the outside of the pivot and the two ends of the rotary reset member are respectively positioned in the turn button body and at the limit frame portion at the edge of the receiving chamber, and the turn button body has a protruding portion extending from the outside. The cover can be rotatably locked to a hook in the preset case, and the hook portion of the press-fit adjustment piece adjusts the fit density of the cover, the screw body and the back plate according to whether it abuts against the inner wall of the preset case; wherein, when the preset movable frame is stored in the two sides of the preset bracket, the inner wall of the preset case presses against the hook portion on the surface of the cover, and the hook portion is squeezed and deformed so that the two fixing portions of the press-fit adjustment piece are outwardly separated from the receiving groove and pressed against the screw body. The buckle body is formed on one side, so that the two sides of the screw buckle body are pressed and tightly attached by the cover body and the back plate without rotating; when the preset movable frame is rotated and opened from the preset bracket to a preset angle, the hook buckle part on the surface of the cover body is not supported by the inner wall of the preset chassis, and the hook buckle part of the press-fit adjustment part is elastically reset to re-accommodate the two fixing parts in the receiving groove, and the two sides of the screw buckle body are not pressed against the cover body and the back plate, so that rotation occurs. The buckle device as described in claim 1, wherein the cover body is formed with a first stopper and a second stopper on both sides of the bottom opening of the storage chamber for the buckle body to rotate to the first position and the second position dead point. The buckle device as described in claim 1, wherein the surface of the cover body is provided with a slope adjacent to the channel and a narrow positioning groove adjacent to the slope at the location where the hook portion of the press-fit adjustment piece abuts against the position. As described in claim 1, the locking device, wherein the compression adjustment member is formed of a torsion spring, and the two ends of the compression adjustment member form the fixing portion elastically supported on the wall of the accommodating groove, and the two fixing portions are bent and extended toward the inner sides to form the hook-shaped buckle portion. A locking device as described in claim 1, wherein the pivot includes a head located in the countersunk shaft groove of the cover body, and a rod body passing through the turnbuckle body and fixed in the shaft groove of the back plate. The buckle device as described in claim 1, wherein the rotary reset member is composed of a torsion spring, the center of the rotary reset member has an annular portion sleeved on the outside of the pivot and a through hole in the annular portion, and extending from the annular portion to both ends are a fixed end penetrated in the positioning hole of the buckle body and a movable end abutted against the limit frame. A locking device as described in claim 1, wherein the fastener is a rivet or a screw; and the lock hole is a through hole with or without internal threads. The buckle device as described in claim 1, wherein the buckle body is formed of a plate body, and the buckle body is formed with a wide plate body at the position where the pivot is passed through and has a guide radius on the top side, and the guide radius extends the hook in a narrow hook shape on the other side of the pivot through which the pivot is passed, and the front end of the hook is formed with an inclined guide radius, and the hook is formed with a supporting edge adjacent to the guide radius that can be supported by the first stopper of the cover body. The locking device as described in claim 1, wherein the preset bracket and the preset movable frame are each provided with a shaft seat and a shaft hole for the shaft seat to penetrate, so that the preset movable frame can rotate outside the preset bracket and a storage space for installing computer parts is formed inside the preset bracket. The preset bracket has a stop body on both sides adjacent to the shaft seat to form a dead stop when the preset movable frame is opened to the maximum angle. The preset movable frame is provided with a limit convex portion locked to the preset chassis and a supporting arc groove adjacent to the limit convex portion on the bottom sides of the two side plates where the shaft hole is provided. The top sides of the two side plates are provided with a horizontally connected connecting plate and a handle is provided on the surface of the connecting plate. As described in claim 9, the two sides of the bottom of the preset chassis further include positioning grooves for the two limiting protrusions of the preset movable frame to extend into and position, and the front end of the positioning groove has a blocking side for the arc groove to contact and position; the two sides of the bottom of the preset chassis are further provided with a positioning frame in a hollow shape for the hook of the rotating buckle body to do a locking and positioning, and the front end of the positioning frame has a contact edge for the inclined guide part of the preset movable frame to resist the hook when rotating and closing. The buckle device as described in claim 1, wherein the shaft seat of the preset tray and the pivot of the buckle device are not at the same position when rotating. A locking device comprises: an outer shell, which comprises a cover body and a back plate fixed by a plurality of fasteners and corresponding lock holes, a press-fit adjustment piece is provided on the inner side of the cover body for receiving and fixing, the hook portion of the press-fit adjustment piece is bent through a channel provided in a receiving groove and is held against the surface of the cover body; a pivot is provided between the cover body and the back plate; and a screw body and a rotary reset piece, both of which are sleeved outside the pivot, and the screw body has a hook extending out of the outer shell, and the hook portion of the press-fit adjustment piece is held against by an external preset mechanism to adjust the fit density of the cover body, the screw body and the back plate; wherein, when the preset movable frame is closed, the screw body is locked. When the preset tray is received at two sides, the inner wall of the preset case presses against the hook portion on the surface of the cover body, and the hook portion is squeezed and deformed so that the two fixing portions of the press-fit adjustment member are outwardly separated from the receiving groove and pressed against one side of the screw button body, so that the two sides of the screw button body are pressed and tightly attached by the cover body and the back plate without rotating; when the preset tray is received, the inner wall of the preset case presses against the hook portion on the surface of the cover body, and the hook portion is squeezed and deformed so that the two fixing portions of the press-fit adjustment member are outwardly separated from the receiving groove and pressed against one side of the screw button body, so that the two sides of the screw button body are pressed and tightly attached by the cover body and the back plate without rotating; When the movable frame is rotated and opened from the preset bracket to a preset angle, the hook portion on the surface of the cover body is no longer supported by the preset inner wall of the chassis, and the hook portion of the press-fit adjustment piece is elastically reset to re-accommodate the two fixing portions in the receiving groove, and the two sides of the screw body are not in a tight state with the cover body and the back plate, thereby generating rotation. The buckle device as described in claim 12, wherein the inner side of the cover body has a recessed storage chamber and the storage chamber further has a recessed receiving groove, and the receiving groove is used to receive and fix the press-fit adjustment member. As described in claim 12, the locking device, wherein the compression adjustment member is formed of a torsion spring, and the two ends of the compression adjustment member form the fixing portion elastically supported against the wall of the accommodating groove, and the two fixing portions are bent and extended toward the inner sides to form the hook-shaped buckle portion. The buckle device as described in claim 12, wherein the two ends of the rotating reset member are respectively positioned in the buckle body and at the limit frame portion at the edge of the storage chamber. As described in claim 12, the cover body has a first stopper and a second stopper formed on both sides of the bottom opening of the storage chamber for the turnbuckle body to rotate to the first position and the second position dead point. The buckle device as described in claim 12, wherein the surface of the cover body is provided with a slope adjacent to the channel and a narrow positioning groove adjacent to the slope at the location where the hook portion of the press-fit adjustment piece abuts against the position. The buckle device as described in claim 12, wherein the shaft seat of the preset tray and the pivot of the buckle device are not at the same position when rotating.

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