CN113783807A

CN113783807A - Computer network switch

Info

Publication number: CN113783807A
Application number: CN202111047692.1A
Authority: CN
Inventors: 李娟�; 张全连
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2021-12-10

Abstract

The invention relates to the technical field of network switches, in particular to a computer network switch, which comprises a network switch body, wherein a network cable interface groove is arranged at the position, close to the upper end, of the outer surface of the front end of the network switch body, vent holes are arranged at the positions, close to the lower end, of the outer surfaces of the two sides of the network switch body, a press block is movably arranged at the position, close to the front end, of the outer surface of the upper end of the network switch body, the lower end of the press block penetrates through the inside of the network cable interface groove, the position, close to the upper end, of the inside of the network switch body is rotatably connected with a first rotating shaft, the first rotating shaft is arranged at the upper end inside the network cable interface groove, the press block penetrates through the inserting groove by using external force applied to the press block to apply downward force to a spring sheet on a network cable crystal head, so that a network cable is convenient to pull out, and a shielding plate can shield the network cable interface groove when pulling out the network cable, greatly reducing the possibility that dust enters the network cable interface slot, and further improving the using effect of the switch.

Description

Computer network switch

Technical Field

The invention relates to the technical field of network switches, in particular to a computer network switch.

Background

The network switch is a device for expanding the network, can provide more connection ports for the sub-network, in order to connect more computers, with the development of the communication industry and the promotion of the national economy informatization, the network switch market is in a steady rising state, it has high cost performance ratio, highly flexible, relatively simple, easy to realize and so on the characteristic, so, the Ethernet technology has become a most important LAN networking technology at present, the network switch also becomes the most popular switch.

Compared with the prior art, when the office network switch is used in a plurality of network cable sockets, the sockets are densely plugged by the network cables, when the network cables need to be pulled out, the network cables are not easy to operate and pull out, and when the network switch is placed under an office desk for a long time, because of a plurality of working personnel, the ventilation openings of the network switch can accumulate impurities such as dust, hair and the like, the dust and the hair are accumulated in the ventilation openings, the heat dissipation effect of the network switch is seriously influenced, and the use effect and the service life of the network switch are greatly reduced.

To this end, a computer network switch is proposed.

Disclosure of Invention

The present invention is directed to a computer network switch, which solves the above problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a computer network switch comprises a network switch body, wherein a network cable interface groove is formed in the position, close to the upper end, of the outer surface of the front end of the network switch body, ventilation openings are formed in the positions, close to the lower end, of the outer surfaces of the two sides of the network switch body, a pressing block is movably mounted on the position, close to the front end, of the outer surface of the upper end of the network switch body, the lower end of the pressing block penetrates through the inner portion of the network cable interface groove, the position, close to the upper end, of the inner front end of the network switch body is rotatably connected with a first rotating shaft, the first rotating shaft is located at the upper end of the inner portion of the network cable interface groove, the two sides of the first rotating shaft penetrate through the outer portion of the network switch body and extend to the outer portion of the network switch body, a shielding plate is sleeved on the outer surface, close to the upper end, of the outer surface of the rear end of the shielding plate, a slot is formed in the position, and the pressing block movably penetrates through the inner portion of the slot, and a shaft spring is movably connected between the first rotating shaft and the shielding plate.

When the switch is used, the crystal head on the network cable is inserted into the network cable interface groove, the crystal head can provide thrust for the shielding plate to the network cable interface groove, the shielding plate rotates towards the inner surface direction of the upper end of the network switch body by taking the first rotating shaft as a central shaft under the action of the thrust, when the network cable is pulled out, the press block is pressed downwards to lead the press block to pass through the slot to provide a downward force for the spring plate on the network cable crystal head, therefore, the crystal head of the network cable is not blocked and forced by the interface slot of the network cable, and the external network cable is pulled, thus avoiding the over-network cable and the undersize interval between the network cables, thereby being inconvenient to pull out the network cable, when the network cable is pulled out again, the shielding plate rotates by taking the first rotating shaft as a central shaft under the reset action of the shaft spring, the shielding plate rotates to the inner surface of the lower end of the network cable interface groove under the action of the shaft spring, thus, the mesh wire interface slot can be shielded, and the possibility of dust entering the mesh wire interface slot is greatly reduced.

Preferably, the outer surface of the first rotating shaft is fixedly provided with cams at positions close to both sides, the outer surface of both sides of the network switch body is fixedly provided with a support plate at positions close to the center of the upper end, the outer surface of both sides of the network switch body is fixedly provided with L-shaped racks at positions close to the front end, the outer surfaces of both sides of the network switch body are provided with limit grooves at positions close to the front end and the rear end, a cleaning plate is connected between two adjacent limit grooves in a sliding manner, the outer surface of one side of the cleaning plate close to the network switch body is movably connected with a second rotating shaft, the outer surface of the second rotating shaft is sleeved with a brush, one side of the second rotating shaft far away from the network switch body penetrates and extends into the cleaning plate, a double-sided synchronous belt is sleeved at one side of the adjacent second rotating shaft far away from the network switch body, and the L-shaped racks penetrate to the front end of the interior of the cleaning plate, and the L-shaped rack is meshed with the cleaning plate, and a spring is fixedly connected between the supporting plate and the cleaning plate.

When the network cable is inserted into the network cable interface slot or pulled out, the shielding plate is subjected to thrust applied by the network cable crystal head or elastic force of the shaft spring for resetting, the shielding plate can rotate at the moment, the cam on the shielding plate can also rotate along with the shielding plate in the rotating process of the cam, the cam is contacted with the cleaning plate to ensure that the cam can give downward pressure to the cleaning plate every turn in the rotating process of the cam, the cleaning plate can move downwards along the direction of the limiting groove under the action of the pressure, when the cam is far away from the cleaning plate, the cleaning plate can move upwards along the limiting groove under the action of the elastic force of the spring, the cam drives the cleaning plate to move upwards and downwards, thereby the cleaning plate is utilized to clean the ventilation opening, the blockage of the ventilation opening is avoided to influence the heat dissipation, when the cam gives downward pressure to the cleaning plate, the double-sided synchronous belt also moves along with the displacement of the cleaning plate, at the moment, on the basis that the external teeth of the double-sided synchronous belt are meshed with the L-shaped rack, the double-sided hold-in range can use the second pivot to rotate as the axle, and then the internal tooth of double-sided hold-in range drives the second pivot in rotating and rotates, and the second pivot is rotated and is driven the brush and also rotate, and the brush can clear up the hair and the dust on vent surface at the rotation in-process.

Preferably, the brushes are distributed on the second rotating shaft in a multi-row uniform circumferential mode, and blades are fixedly connected between the adjacent brushes on the outer surface of the second rotating shaft.

The rotating of second pivot drives also can drive the blade and rotate when the brush pivoted, rotates the in-process at the blade and can cut away the winding hair above the brush to avoid the hair to lock the winding of brush, ensured the clean efficiency of brush.

Preferably, the elastic force of the spring is greater than the sum of the gravity of the cleaning plate and the friction force between the cleaning plate and the limiting groove.

In the process that the cleaning plate moves upwards along the limiting groove, in order to enable the cleaning plate to move smoothly, the elastic force of the spring is larger than the sum of the gravity of the cleaning plate and the friction force between the cleaning plate and the limiting groove.

Preferably, the outer surface of the upper end of the network switch body is located at the middle and provided with a sliding groove, a sliding block is slidably mounted inside the sliding groove, a clamping block is movably mounted on the outer surface of the front end of the network cable interface groove, a pull rod is fixedly mounted between the outer surface of the front end of the sliding block and the clamping block, and a clamping groove is formed in the outer surface of the lower end of the clamping block.

When the net twine together, can let the people divide unclear oneself when needing to pull out which net twine, promote the slider forward movement in the spout this moment, and then utilize the slider to promote the pull rod, the pull rod promotes the fixture block displacement forward, because draw-in groove card on the fixture block is on the net twine for the net twine is arranged in order out during the fixture block displacement, thereby is convenient for seek the net twine that needs to be pulled out, avoids pulling out the mistake.

Preferably, the pull rod is made of elastic metal, and the friction force between the sliding block and the sliding groove is larger than the sum of the gravity of the pull rod and the gravity of the clamping block.

After the pull rod is pushed forwards, the limitation on the pull rod is reduced by the network switch body, the pull rods are unfolded mutually under the action of self elastic force, the net wires are clamped by the clamping blocks to be separated from each other, the carding effect of the net wires is further improved, and the friction force between the sliding blocks and the sliding grooves is larger than the sum of the gravity of the pull rods and the clamping blocks so as to prevent the pull rods and the clamping blocks from being loosened when the network switch body is touched by mistake.

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

1. the pressing block penetrates through the slot by utilizing external force applied to the pressing block to apply downward force to the elastic sheet on the network cable crystal head, so that the network cable crystal head is not clamped and forced in the network cable interface slot, the network cable is convenient to pull out, the shielding plate can shield the network cable interface slot when the network cable is pulled out, the possibility that dust enters the network cable interface slot is greatly reduced, and the using effect of the switch is further improved;

2. the brush can be used for cleaning up dust and hair accumulated on the air vent of the exchanger in the rotating process, and meanwhile, the wound hair on the brush can be cut off by using the blade in the rotating process, so that the hair is prevented from winding and locking the brush, the cleaning efficiency of the brush is ensured, and the heat dissipation effect of the exchanger is further improved;

3. promote the slider and move forward in the spout, and then utilize the slider to promote the pull rod, the pull rod promotes the fixture block displacement forward, because draw-in groove card on the fixture block is on the net twine for the net twine is arranged out during the fixture block displacement, thereby is convenient for look for the net twine that needs to be extracted.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a portion of the present invention;

FIG. 3 is a cross-sectional view of the side of the wire interface slot of the present invention;

FIG. 4 is a schematic view of the cleaning plate of the present invention;

FIG. 5 is an enlarged schematic view of FIG. 4 at A according to the present invention;

FIG. 6 is an internal cross-sectional view of a cleaning plate of the present invention;

FIG. 7 is a schematic diagram of the relative positions of the fixture block, the slider and the pull rod according to the present invention.

In the figure: 1. a network switch body; 2. a shutter; 21. a slot; 3. a first rotating shaft; 31. a shaft spring; 4. a cam; 5. cleaning the plate; 51. a second rotating shaft; 511. a brush; 512. a blade; 52. a double-sided synchronous belt; 6. an L-shaped rack; 7. a support plate; 8. a spring; 9. a limiting groove; 10. a clamping block; 11. a slider; 12. a pull rod; 13. a chute; 14. briquetting; 15. a network cable interface slot; 16. a vent; 17. a clamping 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.

Referring to fig. 1 to 7, the present invention provides a technical solution:

a computer network switch is disclosed, as shown in fig. 1 to 3, comprising a network switch body 1, wherein a network cable interface slot 15 is provided at a position close to the upper end of the outer surface of the front end of the network switch body 1, vent holes 16 are provided at positions close to the lower end of the outer surfaces of both sides of the network switch body 1, a press block 14 is movably mounted at a position close to the front end of the outer surface of the upper end of the network switch body 1, the lower end of the press block 14 penetrates through the inside of the network cable interface slot 15, a first rotating shaft 3 is rotatably connected at a position close to the upper end of the inside of the network switch body 1, the first rotating shaft 3 is located at the upper end of the inside of the network cable interface slot 15, both sides of the first rotating shaft 3 penetrate through and extend to the outside of the network switch body 1, a shield 2 is sleeved at the outer surface of the first rotating shaft 3 inside of the network cable interface slot 15, a slot 21 is formed in the position, close to the upper end, of the outer surface of the rear end of the shielding plate 2, the pressing block 14 movably penetrates through the slot 21, and a shaft spring 31 is movably connected between the first rotating shaft 3 and the shielding plate 2;

when the switch is used, firstly, the crystal head on the network cable is inserted into the network cable interface groove 15, the crystal head can provide the shield plate 2 with a thrust force towards the network cable interface groove 15, the shield plate 2 rotates towards the inner surface direction of the upper end of the network switch body 1 by taking the first rotating shaft 3 as a central axis under the action of the thrust force, when the network cable is pulled out, the press block 14 is pressed downwards to enable the press block 14 to penetrate through the slot 21 to provide a downward force for the elastic sheet on the crystal head of the network cable, so that the crystal head of the network cable is not clamped and forced inside the network cable interface groove 15, then the external network cable is pulled, the phenomenon that the distance between the network cables is too small and the network cable is inconvenient to pull out due to the fact that the press block 14 penetrates through the slot 21 is avoided, when the network cable is pulled out, the shield plate 2 rotates by taking the first rotating shaft 3 as the central axis under the reset action of the shaft spring 31, and the shield plate 2 rotates to the inner surface of the lower end of the network cable interface groove 15 under the action of the shaft spring 31, the net cord interface slot 15 is thus concealed, greatly reducing the likelihood of dust entering the net cord interface slot 15.

As an embodiment of the present invention, as shown in fig. 1 and 5, cams 4 are fixedly installed at positions close to both sides of the outer surface of the first rotating shaft 3, support plates 7 are fixedly installed at positions close to the center of the upper end of the outer surface of both sides of the network switch body 1, L-shaped racks 6 are fixedly installed at positions close to the front end of the outer surface of both sides of the network switch body 1, limit grooves 9 are respectively opened at positions close to the front end and the rear end of the outer surface of both sides of the network switch body 1, a cleaning plate 5 is slidably connected between two adjacent limit grooves 9, a second rotating shaft 51 is movably connected to the outer surface of one side of the cleaning plate 5 close to the network switch body 1, a brush 511 is sleeved on the outer surface of the second rotating shaft 51, one side of the second rotating shaft 51 far from the network switch body 1 penetrates and extends into the cleaning plate 5, a double-sided synchronous belt 52 is sleeved on one side, far away from the network switch body 1, between the adjacent second rotating shafts 51, the L-shaped rack 6 penetrates through the front end of the interior of the cleaning plate 5, the L-shaped rack 6 is meshed with the cleaning plate 5, and a spring 8 is fixedly connected between the supporting plate 7 and the cleaning plate 5;

when the cleaning device works, when a network cable is inserted into or pulled out of the network cable interface slot 15, the shielding plate 2 is subjected to thrust exerted by a network cable crystal head or elastic force of the reset of the shaft spring 31, at the moment, the shielding plate 2 can rotate, in the rotating process of the shielding plate 2, the cam 4 on the shielding plate 2 can also rotate along with the shielding plate 2, in the rotating process of the cam 4, the cam 4 is in contact with the cleaning plate 5, so that the cam 4 can give downward pressure to the cleaning plate 5 in each rotation, the cleaning plate 5 can downwards displace along the direction of the limiting slot 9 under the action of the pressure, when the cam 4 is far away from the cleaning plate 5, the cleaning plate 5 upwards displaces along the limiting slot 9 under the action of the elastic force of the spring 8, the cleaning plate 5 is driven to upwards and downwards displace through the cam 4, therefore, the cleaning plate 5 is used for cleaning the vent 16, the influence of heat dissipation caused by the blockage of the vent 16 is avoided, when the cam 4 gives downward pressure to the cleaning plate 5 and downwards displaces, the double-sided synchronous belt 52 is also displaced along with the displacement of the cleaning plate 5, at the moment, on the basis that the outer teeth of the double-sided synchronous belt 52 are meshed with the L-shaped rack 6, the double-sided synchronous belt 52 can rotate by taking the second rotating shaft 51 as a shaft, the inner teeth of the double-sided synchronous belt 52 drive the second rotating shaft 51 to rotate in the rotation, the second rotating shaft 51 rotates to drive the brush 511 to rotate, and the brush 511 can clean the hair and dust on the surface of the ventilation opening 16 in the rotation process.

As an embodiment of the present invention, as shown in fig. 5, the brush 511 is distributed on the second rotating shaft 51 in a plurality of rows uniformly and circumferentially, and the outer surface of the second rotating shaft 51 is fixedly connected with a blade 512 between adjacent brushes 511;

when the hair cutting device works, the second rotating shaft 51 rotates to drive the brush 511 to rotate, and meanwhile, the blade 512 is driven to rotate, and wound hair on the brush 511 can be cut off in the rotating process of the blade 512, so that the hair is prevented from winding and locking the brush 511, and the cleaning efficiency of the brush 511 is guaranteed.

As an embodiment of the present invention, as shown in fig. 1 and 2, the elastic force of the spring 8 is greater than the sum of the gravity of the cleaning plate 5 and the friction between the cleaning plate 5 and the limiting groove 9;

during operation, in the process that the cleaning plate 5 moves upwards along the limiting groove 9, in order to enable the cleaning plate 5 to move smoothly, the elastic force of the spring 8 is larger than the sum of the gravity of the cleaning plate 5 and the friction force between the cleaning plate 5 and the limiting groove 9.

As an embodiment of the present invention, as shown in fig. 1 and 7, a sliding groove 13 is formed in the middle of the outer surface of the upper end of the network switch body 1, a sliding block 11 is slidably installed inside the sliding groove 13, a clamping block 10 is movably installed on the outer surface of the front end of the network cable interface groove 15, a pull rod 12 is fixedly installed between the outer surface of the front end of the sliding block 11 and the clamping block 10, and a clamping groove 17 is formed in the outer surface of the lower end of the clamping block 10;

the during operation, together when the net twine winding, can let the people divide unclear oneself when needing to pull out which net twine, promote slider 11 and move forward in spout 13 this moment, and then utilize slider 11 to promote pull rod 12, pull rod 12 promotes the displacement forward of fixture block 10, because draw-in groove 17 card on the fixture block 10 is on the net twine for arrange in order the net twine open during the displacement of fixture block 10, thereby be convenient for seek the net twine that needs are pulled out, avoid pulling out the mistake.

As an embodiment of the present invention, as shown in fig. 1 to 7, the pull rod 12 is made of an elastic metal material, and a friction force between the slider 11 and the sliding groove 13 is greater than a sum of gravity of the pull rod 12 and the fixture block 10;

during operation, for after pull rod 12 is pushed forward, network switch body 1 has reduced the restriction to pull rod 12, and pull rod 12 expands each other under the effect of self elasticity for fixture block 10 blocks net twine alternate segregation, has further improved the carding effect of net twine, and the frictional force between slider 11 and spout 13 will be greater than the sum of the gravity of pull rod 12 and fixture block 10 is when preventing to touch network switch body 1 by mistake, and pull rod 12 takes place loosely with fixture block 10.

The working principle is as follows:

when the switchboard is used, firstly the crystal head on the network cable is inserted into the network cable interface slot 15, when the network cable is pulled out, the press block 14 is pressed downwards to enable the press block 14 to pass through the slot 21 to provide a downward force for the elastic sheet on the crystal head of the network cable, so that the crystal head of the network cable is not clamped and forced in the network cable interface slot 15, then the external network cable is pulled, when the network cable is pulled out, the shielding plate 2 rotates by taking the first rotating shaft 3 as a central shaft under the action of the reset of the shaft spring 31, the shielding plate 2 rotates to the inner surface of the lower end of the network cable interface slot 15 under the action of the shaft spring 31, when the network cable is inserted into the network cable interface slot 15 or pulled out, the shielding plate 2 is subjected to the thrust exerted by the crystal head of the network cable or the reset elastic force of the shaft spring 31, at the moment, the shielding plate 2 rotates, and in the rotating process of the shielding plate 2, the cam 4 on the shielding plate 2 also rotates along with the shielding plate 2, and in the rotating process of the cam 4, the cam 4 contacts with the cleaning plate 5 to enable the cam 4 to give downward pressure to the cleaning plate 5 in each rotation, the cleaning plate 5 moves downward along the direction of the limiting groove 9 under the action of the pressure, when the cam 4 is far away from the cleaning plate 5, the cleaning plate 5 moves upward along the limiting groove 9 under the action of the elastic force of the spring 8, the cam 4 drives the cleaning plate 5 to move up and down, when the cam 4 gives downward pressure to the cleaning plate 5, the double-sided synchronous belt 52 also moves along with the movement of the cleaning plate 5, at the moment, on the basis that the outer teeth of the double-sided synchronous belt 52 are meshed with the L-shaped rack 6, the double-sided synchronous belt 52 rotates by taking the second rotating shaft 51 as a shaft, and then the inner teeth of the double-sided synchronous belt 52 drive the second rotating shaft 51 to rotate, the second rotating shaft 51 rotates to drive the brush 511 to rotate, and simultaneously drives the blade 512 to rotate, the hair wound on the brush 511 is cut off in the rotating process of the blade 512, when the net twine is wound together, the sliding block 11 is pushed to move forwards in the sliding groove 13, the sliding block 11 is further utilized to push the pull rod 12, the pull rod 12 pushes the fixture block 10 to move forwards, and the fixture block 10 is clamped on the net twine due to the fact that the clamping groove 17 on the fixture block 10 is clamped on the net twine, so that the net twine is sorted when the fixture block 10 moves.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A computer network switch comprises a network switch body (1) and is characterized in that a network cable interface groove (15) is formed in the position, close to the upper end, of the outer surface of the front end of the network switch body (1), vent holes (16) are formed in the positions, close to the lower end, of the outer surfaces of the two sides of the network switch body (1), a pressing block (14) is movably mounted at the position, close to the front end, of the outer surface of the upper end of the network switch body (1), the lower end of the pressing block (14) penetrates through the inner portion of the network cable interface groove (15), a first rotating shaft (3) is rotatably connected to the position, close to the upper end, of the inner front end of the network switch body (1), the first rotating shaft (3) is located at the inner upper end of the network cable interface groove (15), and the two sides of the first rotating shaft (3) penetrate through and extend to the outer portion of the network switch body (1), the screen line interface slot (15) is characterized in that a shielding plate (2) is sleeved on the outer surface of the first rotating shaft (3) in the inner portion, a slot (21) is formed in the position, close to the upper end, of the outer surface of the rear end of the shielding plate (2), a pressing block (14) penetrates through the inner portion of the slot (21) in a movable mode, and a shaft spring (31) is movably connected between the first rotating shaft (3) and the shielding plate (2).

2. The computer network switch according to claim 1, wherein the outer surface of the first rotating shaft (3) is fixedly provided with cams (4) at positions close to both sides, the outer surface of both sides of the network switch body (1) is fixedly provided with a support plate (7) at positions close to the center of the upper end, the outer surface of both sides of the network switch body (1) is fixedly provided with L-shaped racks (6) at positions close to the front end, the outer surfaces of both sides of the network switch body (1) are provided with limit grooves (9) at positions close to the front and rear ends, a cleaning plate (5) is connected between the two adjacent limit grooves (9) in a sliding manner, the outer surface of one side of the cleaning plate (5) close to the network switch body (1) is movably connected with a second rotating shaft (51), and the outer surface of the second rotating shaft (51) is sleeved with a brush (511), one side that network switch body (1) was kept away from in second pivot (51) runs through and extends to the inside of cleaning plate (5), and is adjacent one side of keeping away from network switch body (1) between second pivot (51) has cup jointed two-sided hold-in range (52), L type rack (6) run through to the inside front end of cleaning plate (5), and mesh mutually between L type rack (6) and cleaning plate (5), fixedly connected with spring (8) between backup pad (7) and cleaning plate (5).

3. A computer network switch according to claim 2, characterised in that said brushes (511) are arranged in a plurality of rows uniformly circumferentially distributed on said second shaft (51), said second shaft (51) having an outer surface between adjacent brushes (511) to which blades (512) are fixedly attached.

4. Computer network switch according to claim 2, characterised in that the spring force of the spring (8) is greater than the sum of the weight force of the cleaning plate (5) and the friction between the cleaning plate (5) and the limiting groove (9).

5. The computer network switch according to claim 1, wherein a sliding groove (13) is formed in the middle of the outer surface of the upper end of the network switch body (1), a sliding block (11) is slidably mounted inside the sliding groove (13), a clamping block (10) is movably mounted on the outer surface of the front end of the network cable interface groove (15), a pull rod (12) is fixedly mounted between the outer surface of the front end of the sliding block (11) and the clamping block (10), and a clamping groove (17) is formed in the outer surface of the lower end of the clamping block (10).

6. The computer network switch according to claim 5, wherein said pull rod (12) is made of elastic metal, and the friction force between said slide block (11) and said slide slot (13) is greater than the sum of the gravity of said pull rod (12) and said latch (10).