CN112732036A

CN112732036A - CPU installation device based on multi-rod clamping fixation

Info

Publication number: CN112732036A
Application number: CN202110041911.9A
Authority: CN
Inventors: 江建; 梁毅
Original assignee: Hunan University of Arts and Science
Current assignee: Hunan University of Arts and Science
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-04-30
Anticipated expiration: 2041-01-13
Also published as: CN112732036B

Abstract

The invention relates to the technical field of CPU (Central processing Unit) fixed mounting, in particular to a CPU mounting device based on multi-rod clamping and fixing. The CPU fixing device comprises a bottom fixing device, a positioning device is arranged on one side of the bottom fixing device, and an upper clamping device is arranged on the upper side of the bottom fixing device; the bottom fixing device comprises a bottom fixing frame, a fixing and screwing device is arranged at a position, close to the middle part, of one side of the bottom fixing frame, and a clamping device is sleeved on the fixing and screwing device; go up clamping device including being square frame, square frame's inside bilateral symmetry fixedly connected with is square position limiting plate. The invention mainly solves the problems that when a CPU is arranged on a circuit board of a computer and the position of a CPU fixing device is fixed by pulling an iron bar, the iron bar needs to be moved, the fixing device for fixing the CPU is inconvenient to disassemble, and when the CPU fixing device is damaged, the CPU fixing device is inconvenient to replace.

Description

CPU installation device based on multi-rod clamping fixation

Technical Field

The invention relates to the technical field of CPU (Central processing Unit) fixed mounting, in particular to a CPU mounting device based on multi-rod clamping and fixing.

Background

A Central Processing Unit (CPU), which is one of the main devices of an electronic computer, is a core accessory in the computer. Its functions are mainly to interpret computer instructions and to process data in computer software. The CPU is the core component of the computer responsible for reading, decoding and executing instructions. The CPU on the current seat type computer is flexibly installed and disassembled so as to facilitate the upgrading and updating of the computer.

When installing CPU on the circuit board of computer, place CPU behind appointed position in the time of mostly, use CPU fixing device to fix CPU, rethread pulling ironbar is lived CPU fixing device's rigidity, so that CPU fixes on the circuit, when later stage needs maintenance and change, the rethread takes off the ironbar, make CPU leave the circuit mainboard, but when removing the ironbar, need give the position that the ironbar removed, be not convenient for dismantle through fixing CPU's fixing device, when CPU fixing device damages, be not convenient for change CPU fixing device.

Disclosure of Invention

The invention aims to provide a CPU mounting device based on multi-rod clamping fixation so as to solve the problems in the background technology.

In order to achieve the purpose, the CPU mounting device based on multi-rod clamping fixation comprises a circuit board, wherein a CPU fixing device is arranged on the circuit board, the CPU fixing device comprises a bottom fixing device, one side of the bottom fixing device is provided with a positioning device, and the upper side of the bottom fixing device is provided with an upper clamping device;

the bottom fixing device comprises a bottom fixing frame, a fixing and screwing device is arranged at a position close to the middle part of one side of the bottom fixing frame, the fixed screwing device is sleeved with a clamping device, the bottom fixing frame comprises two side fixing plates which are horizontally arranged in a square shape, a fixed pasting plate is fixedly connected between one ends of the two side fixing plates, the positions, close to the inner sides, of the other ends of the two side fixing plates are fixedly connected with a hinge frame, the two hinge frames are hinged with a U-shaped rotary clamping handle, a bottom contact block with one semi-arc end is arranged at the position, close to the middle part, of the upper side of the fixed pasting plate, the fixed screwing device comprises an upper semi-cylindrical rotary column, the bottom of the upper rotary column is clamped with an arc-shaped screw surface in an oblique arc shape, the bottom of the upper rotary column at one end of the arc-shaped screw surface is provided with a flat arc surface which is horizontally arranged, the position, close to the middle part, of the bottom of the upper rotary column is fixedly connected with a rebound column of which the bottom is provided with a baffle plate;

go up clamping device including being square frame, square frame's inside bilateral symmetry fixedly connected with is square position limiting plate, two fixedly connected with is square top board on the lateral wall between the position limiting plate, square frame's one side bilateral symmetry fixedly connected with downward lower ring piece of cambered surface, the one end fixedly connected with of lower ring piece is square connecting block, the ascending upper ring piece of one end fixedly connected with cambered surface of connecting block, the touch multitouch under the one end middle part fixedly connected with of lower ring piece is kept away from to square frame's bottom, the one side that square frame was kept away from to the touch multitouch is close to bottom position fixedly connected with fixture block down.

As a further improvement of the technical scheme, the positioning device comprises a U-shaped fixed hanging frame, two ends of the fixed hanging frame are fixedly connected to the upper side of the circuit board, and one side of the fixed hanging frame is arranged inside the upper ring block.

As a further improvement of the technical scheme, the two ends of the hinged frame and the fixed pasting plate are connected to the upper side of the circuit board through screws, one side of the rotary clamping handle is clamped inside the lower ring block, and the connecting block is arranged between the fixed hanging frame and the rotary clamping handle.

As a further improvement of the technical scheme, the position, close to the middle part, of the side wall between the two side fixing plates is fixedly connected with a square side clamping plate, one end of the side clamping plate is in contact with one side of the position limiting plate, and the upper side of the side clamping plate is in contact with the bottom of the square frame.

As a further improvement of the technical scheme, one end, close to the fixed pasting plate, of the bottom contact block is provided with a rotary rebounding groove, one end of the rebounding column is inserted into the rotary rebounding groove, a rebounding spring is sleeved on the rebounding column, and the upper end of the rebounding spring is in contact with the side wall on the upper side of the rotary rebounding groove.

As a further improvement of the technical scheme, an inclined chute is formed in the clamping block, one end of the clamping block, far away from the inclined chute, is fixedly connected with a stop block, the bottom of the arc-shaped spiral surface is in contact with the upper side of the chute, one end of the flat arc surface is in contact with one side of the stop block, and the upper side of the bottom contact block is in contact with the bottom of the lower contact block.

As a further improvement of the technical scheme, the clamping device comprises a semicircular plate which is in a semicircular shape, an annular clamping groove is formed in the upper rotary column, the semicircular plate is arranged in the clamping groove, and one end of the semicircular plate without an arc plate is close to the rotary clamping handle.

As a further improvement of the technical scheme, the left side and the right side of the semi-ring plate are fixedly connected with annular side limiting circular plates, the left side and the right side of the bottom contact block on the fixed pasting plate are fixedly connected with limiting columns of which the tops are fixedly connected with spring baffles, one ends of the limiting columns penetrate through the side limiting circular plates and extend out, and clamping springs are sleeved on the limiting columns on the upper side and the lower side of the side limiting circular plates.

As a further improvement of the technical scheme, the four corners of the bottom of the square frame are fixedly connected with square bottom supporting blocks, the bottoms of the bottom supporting blocks are in contact with the upper surface of the circuit board, the fixed hanging frame is symmetrically provided with lower grooves in the left-right direction, and one side of the connecting block is arranged inside the lower groove.

Compared with the prior art, the invention has the beneficial effects that:

1. in the CPU installation device based on multi-rod clamping fixation, the arranged upper clamping device clamps the CPU to enable the CPU to be clamped on the circuit board, meanwhile, the position limiting plate limits the position of the CPU, the position of the CPU cannot move when the CPU is pressed, and the upper clamping device is convenient to fix the CPU.

2. In this CPU installation device based on multi-rod clamping is fixed, the fixed screwing device that sets up carries out the screens to the position of fixture block, makes the position of fixture block fixed, fixes messenger's CPU fixing device on bottom fixing device through cooperation positioner and rotatory screens to make clamping device go up the position of clamping device to CPU and fixed, and fixed screwing device does not need occupation space when fixed fixture block, makes the operator when using fixed screwing device to fix the fixture block and dismantle, and is more convenient.

3. In this CPU installation device based on multi-rod clamping is fixed, the rotatory screens that can overturn that set up are with fixed stores pylon, through last ring piece, lower ring piece respectively with fixed stores pylon, the joint of rotatory screens handle, make and go up clamping device and fix on bottom fixing device, when clamping device is changed to needs, through rotatory screens handle, make rotatory screens handle leave ring piece down, thereby will go up clamping device and be dismantled from bottom fixing device, the device of being convenient for is to last clamping device's change.

4. In this CPU installation device based on multi-rod clamping is fixed, the clamping device that sets up carries on spacingly to the position of fixing the screwing device, make fixed screwing device fix on bottom fixing device, make fixed screwing device conveniently fix last clamping device's position, the spacing post that sets up simultaneously fixes a position to the clamping device, spacing post cooperation clamping spring is spacing to the position of clamping device, make the clamping device drive fixed screwing device and fix the position of fixture block, thereby make bottom fixing device fix last clamping device's position.

Drawings

FIG. 1 is a schematic view of the entire structure of embodiment 1;

FIG. 2 is a schematic view of a CPU fixing device according to embodiment 1;

FIG. 3 is a schematic view of a CPU fixing device according to embodiment 1;

FIG. 4 is a schematic structural view of a bottom fixing device according to embodiment 1;

FIG. 5 is a schematic structural view of a bottom fixing frame according to embodiment 1;

fig. 6 is one of the schematic structural views of the fixing and tightening device according to embodiment 1;

fig. 7 is one of the structural schematic views of the fixing and tightening device according to embodiment 1;

FIG. 8 is a schematic view of the positioning device of embodiment 1;

FIG. 9 is a schematic view of the structure of an upper holding apparatus according to embodiment 1;

fig. 10 is a schematic structural view of the positioning device in embodiment 1.

The various reference numbers in the figures mean:

1. a circuit board;

2. a CPU fixing device;

21. a bottom fixture;

211. a bottom mount; 2111. a side fixing plate; 2112. fixing the pasting plate; 2113. a hinged frame; 2114. rotating the clamping handle; 2115. a bottom contact block; 2116. rotating the rebounding groove; 2117. a limiting column; 2118. a side clamping plate;

212. fixing the screwing device; 2121. screwing the column upwards; 2122. an arc-shaped screw surface; 2123. flattening the arc surface; 2124. a rebound post; 2125. a rebound spring; 2126. a clamping groove; 2127. a rotating rod groove; 2128. a rotating rod;

213. a clamping device; 2131. a semi-annular plate; 2132. a side limiting circular plate;

214. a clamping spring;

22. an upper clamping device; 221. a square frame; 222. a position restricting plate; 223. an upper pressure plate; 224. a lower ring block; 225. connecting blocks; 226. an upper ring block; 227. a lower contact block; 228. a clamping block; 2281. a chute; 2282. a stop block; 229. a bottom support block;

23. a positioning device; 231. fixing the hanging rack; 232. a lower groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example 1

Referring to fig. 1 to 10, a CPU mounting device based on multi-bar clamping fixation is provided, which includes a circuit board 1, a CPU fixing device 2 is disposed on the circuit board 1, the CPU fixing device 2 includes a bottom fixing device 21, a positioning device 23 is disposed on one side of the bottom fixing device 21, and an upper clamping device 22 is disposed on the upper side of the bottom fixing device 21;

the bottom fixing device 21 comprises a bottom fixing frame 211, a fixing and screwing device 212 is arranged at a position, close to the middle, of one side of the bottom fixing frame 211, a clamping device 213 is sleeved on the fixing and screwing device 212, the bottom fixing frame 211 comprises two square horizontally-arranged side fixing plates 2111, a fixing and pasting plate 2112 is fixedly connected between one ends of the two side fixing plates 2111, a hinge frame 2113 is fixedly connected at a position, close to the inner side, of the other ends of the two side fixing plates 2111, a U-shaped rotary clamping handle 2114 is hinged to the two hinge frames 2113, a bottom contact block 2115 with a semi-arc shape at one end is arranged at a position, close to the middle, of the upper side of the fixing and pasting plate 2112, the fixing and screwing device 212 comprises a semi-cylindrical upper rotary column 2121, an inclined arc-shaped screw surface 2122 is arranged at the bottom of the upper rotary column 2121 at one end of the arc-shaped screw surface 2122, a horizontally-opened flat arc-surface 2123 is arranged at the bottom;

go up clamping device 22 including being square frame 221, square frame 221's inside bilateral symmetry fixedly connected with is square position limiting plate 222, fixedly connected with is square top board 223 on the lateral wall between two position limiting plate 222, square frame 221's one side bilateral symmetry fixedly connected with downward lower ring piece 224 of cambered surface, the one end fixedly connected with of lower ring piece 224 is square connecting block 225, the ascending upper ring piece 226 of one end fixedly connected with cambered surface of connecting block 225, touch multitouch 227 under the one end middle part fixedly connected with of ring piece 224 is kept away from down to square frame 221's bottom, touch multitouch 227 keeps away from one side of square frame 221 down and is close to bottom position fixedly connected with fixture block 228.

In the embodiment, when the device is used, the rotating position-locking handle 2114 is pinched and pulled, the rotating position-locking handle 2114 is rotated in the direction away from the positioning device 23 around the position hinged with the hinge frame 2113, when the rotating position-locking handle 2114 is away from the positioning device 23, one end of the upper ring block 226 is inserted into the bottom of the fixed hanger 231, the fixed hanger 231 is arranged inside the upper ring block 226, after the position of the upper ring block 226 is placed, one end of the rotating position-locking handle 2114 is pulled, the rotating position-locking handle 2114 is rotated, one end of the rotating position-locking handle 2114 is clamped inside the lower ring block 224, the CPU to be fixed is placed at the position of the circuit connection inside the bottom fixing device 21, the upper clamping device 22 is turned over, the upper clamping device 22 is rotated around the central axis of the fixed hanger 231, the upper ring block 226 slides on the fixed hanger 231, the rotating position-locking handle 2114 rotates in the lower ring block 224, when the upper clamping device 22 is turned over, one side of the position limiting plate 222 contacts with the edge of the CPU to limit the position of the CPU, when one end of the bottom support block 229 contacts with the upper surface of the circuit board 1, the upper pressing plate 223 contacts with the upper surface of the CPU to fix the CPU on the circuit connection board, the position of the upper clamping device 22 is set, one end of the rotating rod 2128 is pulled out of the rotating rod groove 2127, one end of the rotating rod 2128 is held and rotated to make the rotating rod 2128 drive the upper screw 2121 to rotate, the half ring plate 2131 slides in the clamping groove 2126, the rotating upper screw 2121 drives the arc screw 2122 to contact with the inclined groove 2281, the arc screw 2122 and the inclined groove 2281 complete contact during the continuous rotation of the upper screw 2121, the flat arc 2123 contacts with the upper side of the fixture block 228, one side of the flat arc 2123 contacts with one side of the stopper 2282, when the arc screw 2122 contacts with the inclined groove 2281, the fixing screw 212 moves upward, and the resilient spring 2125 is compressed, the moving fixing screw 212 drives the detent 213 to move upward, the upward detent 213 presses the clamping spring 214, so that the clamping spring 214 pushes the detent 213 to move downward, thereby limiting the position of the fixing screw 212 by the detent 213, and allowing the position of the fixing block 228 fastened by the fixing screw 212 to be located in the rotating rod groove 2127 after the fixing screw 212 fixes the position of the upper clamping device 22.

Further, the positioning device 23 includes a U-shaped fixing hanger 231, two ends of the fixing hanger 231 are fixedly connected to the upper side of the circuit board 1, one side of the fixing hanger 231 is disposed inside the upper ring block 226, two ends of the hinge frame 2113 and the fixing applying plate 2112 are both screwed to the upper side of the circuit board 1, one side of the rotary clamping handle 2114 is clamped inside the lower ring block 224, the connecting block 225 is disposed between the fixing hanger 231 and the rotary clamping handle 2114, and the upper clamping device 22 is clamped by the upper ring block 226, the lower ring block 224, the fixing hanger 231 and the rotary clamping handle 2114 through the rotation of the rotary clamping handle 2114, so that the upper clamping device 22 is fixed on the fixing hanger 231, and the upper clamping device 22 is convenient to mount and dismount on the bottom fixing device 21.

Specifically, a position of a side wall between two side fixing plates 2111 near the middle is fixedly connected with a square side clamping plate 2118, one end of the side clamping plate 2118 contacts one side of a position limiting plate 222, the upper side of the side clamping plate 2118 contacts the bottom of a square frame 221, one end of a bottom contact block 2115 near a fixed application plate 2112 is provided with a rotary rebounding groove 2116, one end of a rebounding post 2124 is inserted in the rotary rebounding groove 2116, a rebounding spring 2125 is sleeved on the rebounding post 2124, the upper end of the rebounding spring 2125 contacts the side wall on the upper side of the rotary rebounding groove 2116, a tilted inclined groove 2281 is formed on a fixture block 228, one end of the upper end of the fixture block 228 far from the inclined groove 2281 is fixedly connected with a stopper 2282, the bottom of an arc screw surface 2122 contacts the upper side of the inclined groove 2281, one end of a flat arc surface 2123 contacts one side of the stopper 2282, the upper side of the bottom contact block 2115 contacts the bottom of the lower contact block 227, and, a stop block 2282 is fixedly connected to an end of the upper end of the latch 228 away from the inclined slot 2281, a bottom of the arc-shaped screw surface 2122 contacts with an upper side of the inclined slot 2281, an end of the flat arc surface 2123 contacts with one side of the stop block 2282, an upper side of the bottom contact block 2115 contacts with a bottom of the lower contact block 227, the fixing screw device 212 contacts with the inclined slot 2281 through the contact of the arc-shaped screw surface 2122 and the inclined slot 2281, and the position of the latch 228 is fixed, so that the upper clamping device 22 is fixed on the bottom fixing device 21, and the CPU is clamped by the upper clamping device 22.

In addition, the locking device 213 includes a semi-ring-shaped half ring plate 2131, an annular locking groove 2126 is provided on the upper stud 2121, the half ring plate 2131 is provided in the locking groove 2126, one end of the half ring plate 2131 without arc plate is close to the rotary locking handle 2114, the left and right sides of the half ring plate 2131 are fixedly connected with a ring-shaped side limiting circular plate 2132, the left and right sides of the bottom contact block 2115 on the fixed pasting plate 2112 are fixedly connected with a limiting post 2117 with a top fixedly connected with a spring baffle, one end of the limiting post 2117 penetrates through the side limiting circular plate 2132 and extends out, the limiting posts 2117 on the upper and lower sides of the side limiting circular plate 2132 are respectively sleeved with a clamping spring 214, the locking device 213 is provided to position the fixing device 212, so that the fixing device 212 is fixed on the bottom fixing device 21, when the upper clamping device 22 clamps the CPU, the fixing device screws the locking block 212, the upper holding device 22 is fixed to the bottom fixing device 21, so that the upper holding device 22 holds the CPU.

Further, the bottom four corners fixedly connected with of square frame 221 is square bottom support block 229, the bottom of bottom support block 229 and the upper surface contact of circuit board 1, lower recess 232 has been seted up to bilateral symmetry on the fixed stores pylon 231, one side of connecting block 225 sets up the inside at lower recess 232, the bottom support block 229 of setting supports the position of square frame 221, make square frame 221 place in stable position, set up one side of connecting block 225 in lower recess 232 simultaneously, when dismantling clamping device 22, be convenient for will go up clamping device 22 and the separation of bottom fixing device 21.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. CPU installation device based on multi-rod clamping is fixed, including circuit board (1), its characterized in that: the CPU fixing device (2) is arranged on the circuit board (1), the CPU fixing device (2) comprises a bottom fixing device (21), a positioning device (23) is arranged on one side of the bottom fixing device (21), and an upper clamping device (22) is arranged on the upper side of the bottom fixing device (21);

the bottom fixing device (21) comprises a bottom fixing frame (211), a fixing and screwing device (212) is arranged at a position, close to the middle, of one side of the bottom fixing frame (211), a clamping device (213) is sleeved on the fixing and screwing device (212), the bottom fixing frame (211) comprises two side fixing plates (2111) which are horizontally arranged in a square shape, a fixing and applying plate (2112) is fixedly connected between one ends of the two side fixing plates (2111), a hinge frame (2113) is fixedly connected at a position, close to the inner side, of the other end of each side fixing plate (2111), a U-shaped rotary clamping handle (2114) is hinged to each hinge frame (2113), a semi-arc-shaped bottom contact block (2115) is arranged at a position, close to the middle, of the upper side of each fixing and applying plate (2112), one end of each fixing and the fixing device (212) comprises a semi-cylindrical upper rotary column (2121), an arc-shaped screw surface (2122) in an oblique arc shape is clamped at the bottom of the upper rotary column (2121), a flat arc surface (2123) which is horizontally arranged at the bottom of the upper rotary column (2121) at one end of the arc-shaped screw surface (2122) is arranged at the bottom of the upper rotary column (2121), and a rebound column (2124) with a baffle at the bottom is fixedly connected to the position, close to the middle, of the bottom of the upper rotary column (2121);

the upper clamping device (22) comprises a square frame (221), the square frame (221) is fixedly connected with square position limiting plates (222) in a bilateral symmetry mode, a square upper pressing plate (223) is fixedly connected to the side wall between the two position limiting plates (222), one side of the square frame (221) is fixedly connected with a lower ring block (224) with a downward cambered surface in a bilateral symmetry way, one end of the lower ring block (224) is fixedly connected with a square connecting block (225), one end of the connecting block (225) is fixedly connected with an upper ring block (226) with an upward cambered surface, a lower contact block (227) is fixedly connected to the middle part of one end of the bottom of the square frame (221) far away from the lower ring block (224), a clamping block (228) is fixedly connected to one side, far away from the square frame (221), of the lower contact block (227) and close to the bottom.

2. The CPU mounting apparatus based on multi-bar snap-in mounting according to claim 1, wherein: the positioning device (23) comprises a U-shaped fixed hanger (231), two ends of the fixed hanger (231) are fixedly connected to the upper side of the circuit board (1), and one side of the fixed hanger (231) is arranged inside the upper ring block (226).

3. The CPU mounting apparatus based on multi-bar snap-in mounting according to claim 2, wherein: the two ends of the hinged frame (2113) and the fixed pasting plate (2112) are connected to the upper side of the circuit board (1) through screws, one side of the rotary clamping handle (2114) is clamped in the lower ring block (224), and the connecting block (225) is arranged between the fixed hanging frame (231) and the rotary clamping handle (2114).

4. The CPU mounting apparatus based on multi-bar snap-in mounting according to claim 1, wherein: the position, close to the middle part, of the side wall between the two side fixing plates (2111) is fixedly connected with a square side clamping plate (2118), one end of the side clamping plate (2118) is in contact with one side of the position limiting plate (222), and the upper side of the side clamping plate (2118) is in contact with the bottom of the square frame (221).

5. The CPU mounting apparatus based on multi-bar snap-in mounting according to claim 1, wherein: the bottom contact block (2115) is provided with a rotary rebounding groove (2116) at one end close to the fixed applying plate (2112), one end of a rebounding column (2124) is inserted into the rotary rebounding groove (2116), a rebounding spring (2125) is sleeved on the rebounding column (2124), and the upper end of the rebounding spring (2125) is in contact with the side wall on the upper side of the rotary rebounding groove (2116).

6. The CPU mounting apparatus based on multi-bar snap-in mounting according to claim 1, wherein: set up inclined chute (2281) on fixture block (228), the one end fixedly connected with that chute (2281) was kept away from to the upper end of fixture block (228) keeps off position piece (2282), the upside contact of the bottom of arc spiral surface (2122) and chute (2281), the one end of flat cambered surface (2123) and the one side contact of keeping off position piece (2282), the upside of end touch multitouch (2115) and the bottom contact of lower touch multitouch (227).

7. The CPU mounting apparatus based on multi-bar snap-in mounting according to claim 1, wherein: go up the upside of rotary column (2121) and be L shape bull stick (2128) that one end fixedly connected with dog, the upside of going up rotary column (2121) corresponds bull stick (2128) position and offers bull stick groove (2127) that are used for accomodating bull stick (2128), bull stick (2128) sliding connection is in the inside of bull stick groove (2127), the one end of bull stick groove (2127) runs through on rotary column (2121) and extends away.

8. The CPU mounting apparatus based on multi-bar snap-in mounting according to claim 1, wherein: the clamping device (213) comprises a semicircular plate (2131), an annular clamping groove (2126) is formed in the upper rotary column (2121), the semicircular plate (2131) is arranged in the clamping groove (2126), and one end, without an arc plate, of the semicircular plate (2131) is close to the rotary clamping handle (2114).

9. The CPU mounting apparatus based on multi-bar snap-in mounting according to claim 8, wherein: the left side and the right side of the semi-ring plate (2131) are fixedly connected with annular side limiting circular plates (2132), the left side and the right side of a bottom contact block (2115) on the fixed pasting plate (2112) are fixedly connected with limiting columns (2117) of which the tops are fixedly connected with spring baffles, one ends of the limiting columns (2117) penetrate through the side limiting circular plates (2132) and extend out, and clamping springs (214) are sleeved on the limiting columns (2117) on the upper side and the lower side of the side limiting circular plates (2132).

10. The CPU mounting apparatus based on multi-bar snap-in mounting according to claim 2, wherein: the bottom four corners of the square frame (221) are fixedly connected with square bottom supporting blocks (229), the bottoms of the bottom supporting blocks (229) are in contact with the upper surface of the circuit board (1), lower grooves (232) are symmetrically formed in the fixed hanging rack (231) in the left-right direction, and one side of each connecting block (225) is arranged inside each lower groove (232).