CN210928300U - High-performance network security cabinet convenient for wire arrangement - Google Patents

Abstract

The utility model discloses a high-performance network security cabinet with convenient wire management, which relates to the technical field of network security cabinets. , the connecting wires are prone to knotting, which is not only inconvenient for line maintenance, but also affects the aesthetics of the interior of the cabinet. A control device is fixedly connected to the upper end of the outer side of the network security cabinet body, a fire hydrant placement box is fixedly connected to the side of the lower end of the network security cabinet body, and a control solenoid valve is fixedly connected to the upper end of the dry powder fire hydrant. The lower end of the security cabinet body is located on the inner side of the support base and is fixedly connected with a universal wheel, one end of the mounting plate is fixedly connected with the inner side of the movable cabinet door, and the inner side of the cooling fan at the upper end of the network security cabinet body is fixedly connected with a temperature sensor. with smoke sensor.

Description

A high-performance network security cabinet that facilitates cable management

technical field

The utility model relates to the technical field of network security cabinets, in particular to a high-performance network security cabinet that facilitates cable management.

Background technique

The network is composed of several nodes and links connecting these nodes, representing many objects and their interconnections. It is the transmission of information by network cables, power cables, installation panels, components and mechanical parts, etc. The network security cabinet is mainly used for Placing various installation panels and plug-ins will also include the installation of a large number of power cables, network cables, different types of components or mechanical parts. Because network security cabinets are often placed in key equipment related to the normal operation of the network, Therefore, regular maintenance is required. .

At present, the connecting wires between the components of the high-performance network security cabinets on the market are scattered inside the cabinet, and the connecting wires are prone to knotting, which is not only inconvenient for the maintenance of the lines, but also affects the aesthetics of the interior of the cabinet. Therefore, the market There is an urgent need for a high-performance network security cabinet that is convenient for cable management to solve this problem.

Utility model content

The purpose of this utility model is to provide a high-performance network security cabinet that is convenient for wire management, so as to solve the problem that the connection wires between the components of the high-performance network security cabinets currently on the market in the above-mentioned background technology are scattered inside the cabinet. The connecting wires are prone to knotting, which is not only inconvenient for line maintenance, but also affects the aesthetics of the interior of the cabinet.

In order to achieve the above purpose, the present invention provides the following technical solutions: a high-performance network security cabinet that is convenient for cable management, comprising a network security cabinet body, and a control device is fixedly connected to the upper end of the outer side of the network security cabinet body, and the network security cabinet body is A fire hydrant placement box is fixedly connected to the side of the lower end of the cabinet body, a dry powder fire hydrant is installed in the interior of the fire hydrant placement box, and a control solenoid valve is fixedly connected to the upper end of the dry powder fire hydrant. The upper end is fixedly connected with a lower connecting pipe, the mouth of the network security cabinet body is fixedly connected with one end of a first sealing strip, the other end of the first sealing strip is provided with one end of a second sealing strip, and the second sealing strip is The other end of the strip is fixedly connected with a movable cabinet door, the interior of the movable cabinet door is provided with three visual windows at equal intervals, and the interior of the movable cabinet door is provided with a hidden handle between the two visual windows. The lower end of the network security cabinet body is fixedly connected with a support base, the lower end of the network security cabinet body is located on the inner side of the support base and is fixedly connected with a universal wheel, the inner side of the network security cabinet body is provided with a horizontal chute, the The interior of the horizontal chute is provided with a horizontal slider, one end of the horizontal slider away from the horizontal chute is fixedly connected with a mounting plate, and one end of the mounting plate is fixedly connected with the inner side of the movable cabinet door, and the inside of the network security cabinet body is A cooling fan is fixedly connected to the upper end of the network security cabinet body, and a temperature sensor and a smoke sensor are fixedly connected to the inner side of the cooling fan at the upper end of the network security cabinet body, and the temperature sensor and the smoke sensor are symmetrically arranged with respect to the network security cabinet body.

Preferably, the back of the network security cabinet body is provided with an installation cavity, and the back of the network security cabinet body is designed with a mesh structure, the interior of the installation cavity is provided with a desiccant, and the mouth of the installation cavity is A cover is provided, the cover and the network security cabinet body are detachably connected by locking bolts, the bottom end of the network security cabinet body is fixedly connected with a dustproof net, and the inside of the dustproof net is provided with a wire outlet hole, An elastic shrinkable sleeve is fixedly connected to the inside of the wire outlet hole.

Preferably, the control device is electrically connected to the control solenoid valve, the cooling fan, the temperature sensor and the smoke sensor, and the temperature sensor and the smoke sensor are respectively DHT11 and ME2-CO, and the cooling fan is related to the network security cabinet body. Two are arranged symmetrically on the vertical center line.

Preferably, a branch pipe is fixedly connected to the upper end of the lower connecting pipe, one end of a spray pipe is fixedly connected to the side of the branch pipe, and the other end of the spray pipe extends to the inner side of the network security cabinet body and is fixedly connected to a spray pipe. The upper end of the shunt pipe is fixedly connected with an upper connecting pipe, and the upper end of the upper connecting pipe is fixedly connected with another shunt pipe.

Preferably, the spray nozzles are designed to be inclined downward, and four spray nozzles are arranged at equal intervals on the surface of the shunt pipe.

Preferably, the specifications of the first sealing strip and the second sealing strip are the same, and the first sealing strip and the second sealing strip adopt two magnetic strips with opposite magnetic properties.

Preferably, four support bases and universal wheels are respectively arranged symmetrically with respect to the vertical center line of the network security cabinet body, the upper end of the support base is provided with a threaded sleeve, and the lower end of the threaded sleeve is threadedly connected with a A threaded base, the section of the threaded base is designed in a "T" shape, and the sum of the heights of the threaded sleeve and the threaded base is greater than the height of the universal wheel.

Preferably, the horizontal chutes and the horizontal sliders are adapted to each other, and there are three groups of the horizontal chutes and the horizontal sliders located on the inner side of the network security cabinet body at equal intervals.

Preferably, the interior of the mounting board adopts a through-hole design, and the interior of the mounting board is symmetrically provided with four mounting slots, a lower wiring board and lead holes, and the lower wiring board is located between the mounting slots and the lead holes, The inside of the lower wiring board is provided with a lower wiring slot, the inner part of the lower wiring slot is fixedly connected with a lower protective skin, and the upper end of the mounting plate is located on the side of the lower wiring board. The upper end of the sub-buckle is snap-connected with a female buckle, the upper end of the female buckle is fixedly connected with an upper wiring board, and an upper wiring slot is arranged inside the upper wiring board, and the upper wiring slot An upper protective skin is fixedly connected to the inside of the lead hole, and a protective ring is fixedly connected to the inside of the lead hole.

Preferably, the lead holes are distributed at equal intervals, and the lead holes correspond to the lower cable slot and the upper cable slot one-to-one, and the lower cable plate, the lower protective cover, the upper cable plate and the upper protective cover are all inside All have through-hole designs.

Compared with the prior art, the beneficial effects of the present utility model are as follows: 1. The high-performance network security cabinet that facilitates cable management is provided with a lower wiring board, a lower wiring slot, an upper wiring board, an upper wiring slot and leads. The holes in the network security cabinet realize the arrangement of the internal lines of the network security cabinet, which makes the layout of the internal lines of the network security cabinet orderly and beautiful, and at the same time avoids the phenomenon of knots in the internal lines of the network security cabinet, and also facilitates the maintenance of the internal lines and the lower wiring. The interior of the board, the lower cable trough, the upper cable plate and the upper cable trough are all designed with through holes to ensure the heat dissipation of the internal circuits of the network security cabinet, and solve the problem between the various components of the high-performance network security cabinets currently on the market. The connecting wires are scattered inside the cabinet, and the connecting wires are prone to knotting, which is not only inconvenient for line maintenance, but also affects the aesthetics of the cabinet.

2. The high-performance network security cabinet with convenient cable management realizes automatic fire extinguishing inside the network security cabinet through the cooperation of dry powder fire hydrant, control solenoid valve, control device and smoke sensor, avoiding greater economic loss and inconvenience. Necessary casualties, and at the same time, by setting the support base and the universal wheel, it not only ensures the stable placement of the network security cabinet, but also facilitates the movement of the network security cabinet. The temperature inside the network security cabinet is controlled in real time to avoid damage to the internal components caused by the high temperature inside the network security cabinet, and improve the service life of the components inside the network security cabinet. It can prevent the internal parts of the network security cabinet from being too wet and cause the components inside the entire network security cabinet to fail to operate normally, and ensure the normal operation of the components inside the network security cabinet.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present utility model;

FIG. 2 is a schematic view of the front cross-sectional structure of the utility model;

Fig. 3 is the side view structure schematic diagram of the utility model;

4 is a schematic diagram of the structure of the back of the utility model;

FIG. 5 is a schematic view of the top-view structure of the mounting plate of the present invention;

6 is a schematic diagram of the bottom structure of the network security cabinet body of the present invention;

Fig. 7 is the enlarged structural schematic diagram of the utility model A;

FIG. 8 is a schematic view of the enlarged structure at B of the present invention.

In the figure: 1. Network security cabinet body; 2. Control device; 3. Fire hydrant placement box; 4. Dry powder fire hydrant; 5. Control solenoid valve; 6. Lower connecting pipe; 7. First sealing strip; 8. Section Two sealing strips; 9, movable cabinet door; 10, hidden handle; 11, visual window; 12, support base; 13, universal wheel; 14, horizontal chute; 15, horizontal slider; 16, mounting plate; 17, cooling fan; 18, temperature sensor; 19, smoke sensor; 101, installation cavity; 102, desiccant; 103, cover; 104, dust filter; 105, outlet hole; 106, elastic shrink sleeve; 61, shunt pipe; 62, spray pipe; 63, spray nozzle; 64, upper connecting pipe; 121, threaded casing; 122, threaded base; 161, installation slot; 162, lower cable plate; 163, lead hole; 164, lower Cable slot; 165, lower protective skin; 166, sub buckle; 167, female buckle; 168, upper cable plate; 169, upper cable slot; 170, upper protective skin; 171, protection ring.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

Referring to FIGS. 1-8, an embodiment of the present invention: a high-performance network security cabinet that facilitates cable management, including a network security cabinet body 1, and a control device 2 is fixedly connected to the upper end outside the network security cabinet body 1. , the side of the lower end of the network security cabinet body 1 is fixedly connected with a fire hydrant placement box 3, the interior of the fire hydrant placement box 3 is fitted with a dry powder fire hydrant 4, and the upper end of the dry powder fire hydrant 4 is fixedly connected with a control solenoid valve 5, control The upper end of the solenoid valve 5 is fixedly connected with the lower connecting pipe 6, the mouth of the network security cabinet body 1 is fixedly connected with one end of the first sealing strip 7, and the other end of the first sealing strip 7 is provided with one end of the second sealing strip 8, A movable cabinet door 9 is fixedly connected to the other end of the second sealing strip 8 , and three visual windows 11 are arranged at equal intervals inside the movable cabinet door 9 . The lower end of the network security cabinet body 1 is fixedly connected with a support base 12, the lower end of the network security cabinet body 1 is located on the inner side of the support base 12 and is fixedly connected with a universal wheel 13, and the inner side of the network security cabinet body 1 is provided with a The horizontal chute 14 is provided with a horizontal sliding block 15 inside the horizontal sliding chute 14. One end of the horizontal sliding block 15 away from the horizontal chute 14 is fixedly connected with a mounting plate 16, and one end of the mounting plate 16 is fixedly connected with the inner side of the movable cabinet door 9 , a cooling fan 17 is fixedly connected to the upper end of the network security cabinet body 1, and a temperature sensor 18 and a smoke sensor 19 are fixedly connected to the inner side of the cooling fan 17 at the upper end of the network security cabinet body 1, and the temperature sensor 18 and the smoke sensor 19 are related to the network The safety cabinet body 1 is symmetrically arranged.

Further, the back of the network security cabinet body 1 is provided with an installation cavity 101 , and the back of the network security cabinet body 1 adopts a mesh structure design, and the interior of the installation cavity 101 is provided with a desiccant 102 , so that the interior of the network security cabinet body 1 is realized. The opening of the installation cavity 101 is provided with a cover 103, and the cover 103 is detachably connected with the network security cabinet body 1 through locking bolts, which is convenient for the replacement of the desiccant 102, and the bottom end of the network security cabinet body 1 is fixedly connected There is a dust-proof net 104, and the inside of the dust-proof net 104 is provided with an outlet hole 105 to ensure the ventilation inside the network security cabinet body 1, thereby facilitating heat dissipation and avoiding the entry of dust. Prevent the entry of dust.

Further, the control device 2 is electrically connected with the control solenoid valve 5, the cooling fan 17, the temperature sensor 18, and the smoke sensor 19, and the temperature sensor 18 and the smoke sensor 19 are respectively DHT11 and ME2-CO, and the cooling fan 17 is related to There are two symmetrical vertical center lines of the network security cabinet body 1 , which is convenient for monitoring the internal temperature and smoke of the network security cabinet body 1 , and also facilitates the control of the cooling fan 17 and the control solenoid valve 5 .

Further, a branch pipe 61 is fixedly connected to the upper end of the lower connecting pipe 6, one end of a spray pipe 62 is fixedly connected to the side of the branch pipe 61, and the other end of the spray pipe 62 extends to the inner side of the network security cabinet body 1 and is fixedly connected with a spray nozzle. 63. An upper connecting pipe 64 is fixedly connected to the upper end of the shunt pipe 61, and another shunt pipe 61 is fixedly connected to the upper end of the upper connecting pipe 64 to facilitate the connection between the spray nozzle 63 and the dry powder fire hydrant 4.

Further, the spray nozzles 63 are designed to be inclined downward, and four spray nozzles 63 are arranged at equal intervals on the surface of the shunt pipe 61 to ensure sufficient fire fighting inside the network security cabinet body 1 .

Further, the specifications of the first sealing strip 7 and the second sealing strip 8 are the same, and the first sealing strip 7 and the second sealing strip 8 adopt two magnetic strips with opposite magnetic properties to ensure the sealing of the network security cabinet body 1 .

Further, four support bases 12 and universal wheels 13 are respectively arranged symmetrically about the vertical center line of the network security cabinet body 1 , the upper end of the support base 12 is provided with a threaded sleeve 121 , and the lower end of the threaded sleeve 121 is threadedly connected with a thread The base 122, the cross section of the threaded base 122 is designed in a "T" shape, and the sum of the heights of the threaded sleeve 121 and the threaded base 122 is greater than the height of the universal wheel 13, which not only realizes the stable support of the network security cabinet body 1, The movement of the network security cabinet body 1 is also facilitated.

Further, the horizontal chute 14 and the horizontal slider 15 are adapted to each other, and there are three groups of the horizontal chute 14 and the horizontal slider 15 located at the inner side of the network security cabinet body 1 at equal intervals, which facilitates the pulling and pulling of the mounting plate 16 .

Further, the interior of the mounting plate 16 adopts a through-hole design. The interior of the mounting plate 16 is symmetrically provided with four mounting slots 161 , a lower wiring board 162 and a lead hole 163 , and the lower wiring board 162 is located in the mounting slot 161 and the lead hole 163 In between, a lower cable slot 164 is arranged inside the lower cable plate 162, a lower protective skin 165 is fixedly connected to the inside of the lower cable slot 164, and the upper end of the mounting plate 16 is located on the side of the lower cable plate 162. The side is symmetrically and fixedly connected There are four sub-buttons 166, the upper end of the sub-buttons 166 is connected with a female button 167, the upper end of the female button 167 is fixedly connected with an upper cable plate 168, and an upper cable slot 169 is arranged inside the upper cable plate 168. An upper protective skin 170 is fixedly connected to the inside of the wire groove 169, and a protective ring 171 is fixedly connected to the inside of the lead hole 163, so as to realize the orderly arrangement of the lines.

Further, the lead holes 163 are distributed at equal intervals, and the lead holes 163 are in one-to-one correspondence with the lower cable slot 164 and the upper cable slot 169, and the lower cable plate 162, the lower protective skin 165, the upper cable plate 168 and the upper protection The interior of the Pi 170 is designed with through-holes.

Working principle: when in use, push the network security cabinet body 1, move the network security cabinet body 1 to the designated installation location, unscrew the threaded base 122 from the inside of the threaded sleeve 121, and then place the network security cabinet body 1 stably. The hidden handle 10 pulls out the movable cabinet door 9 , and then pulls out the mounting plate 16 from the inside of the network security cabinet body 1 , installs each component in the interior of the installation slot 161 , and disassembles the child buckle 166 and the female buckle 167 , and then remove the upper wiring board 168, place the wires on the lower protective skin 165 on the lower wiring groove 164, press the female buckle 167 into the interior of the sub-buckle 166, install the upper wiring board 168, and then The wires are arranged in an orderly manner through the lower wiring board 162 and the upper wiring board 168, the wires are passed through the protective ring 171, and the wires are introduced into the elastic shrinkable sleeve 106 in the wire outlet hole 105, and the elastic shrinkable sleeve 106, and then by pushing the movable cabinet door 9, the mounting plate 16 is pushed to the inside of the network security cabinet body 1, and the movable cabinet door 9 and the network security cabinet body 1 are mutually installed through the first sealing strip 7 and the second sealing strip 8. , turn on the external power supply of the device, when the temperature inside the network security cabinet body 1 is too high, the temperature sensor 18 transmits the signal to the control device 2, the control device 2 makes the cooling fan 17 act, the cooling fan 17 blows air, and the network security cabinet The heat inside the main body 1 is dissipated from the dust filter 104 at the lower end. When a fire occurs inside, the smoke sensor 19 transmits the signal to the control device 2. The control device 2 makes the control solenoid valve 5 open, and the dry powder inside the dry powder fire hydrant 4 passes through the spray nozzle. 63 is sprayed into the inside of the network security cabinet body 1 to extinguish the fire inside the network security cabinet body 1, and at the same time install the desiccant 102 inside the cavity 101 to dry the inside of the network security cabinet body 1, and then give the network security cabinet body 1 The internal components provide a dry working environment. When the network security cabinet body 1 is moved, the threaded base 122 is screwed up, the universal wheel 13 is lowered, and the network security cabinet body 1 is pushed away.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention may be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are embraced within the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (10)

1. The utility model provides a make things convenient for high performance network security rack of reason line, includes network security rack body (1), its characterized in that: the upper end of the outer side of the network safety cabinet body (1) is fixedly connected with a control device (2), the side of the lower end of the network safety cabinet body (1) is fixedly connected with a fire hydrant placing box (3), the inside of the fire hydrant placing box (3) is clamped with a dry powder fire hydrant (4), the upper end of the dry powder fire hydrant (4) is fixedly connected with a control electromagnetic valve (5), the upper end of the control electromagnetic valve (5) is fixedly connected with a lower connecting pipe (6), the opening part of the network safety cabinet body (1) is fixedly connected with one end of a first sealing strip (7), the other end of the first sealing strip (7) is provided with one end of a second sealing strip (8), the other end of the second sealing strip (8) is fixedly connected with a movable cabinet door (9), and three visible windows (11) are arranged in the movable cabinet door (9) at equal intervals, the utility model discloses a network security cabinet, including activity cabinet door (9), lower extreme fixedly connected with support base (12) of network security cabinet body (1), the lower extreme of network security cabinet body (1) is located and is provided with hidden handle (10) between two visual windows (11), the lower extreme of network security cabinet body (1) is located inboard fixedly connected with universal wheel (13) of support base (12), the inside avris of network security cabinet body (1) is provided with horizontal spout (14), the inside of horizontal spout (14) is provided with horizontal slider (15), horizontal slider (15) are kept away from the one end fixedly connected with mounting panel (16) of horizontal spout (14), the inboard fixed connection of the one end of mounting panel (16) and activity cabinet door (9), the inside upper end fixedly connected with radiator fan (17) of network security cabinet body (1), the inboard fixedly connected with temperature sensor (18) of radiator fan (17) of the inside upper end of network security cabinet body (1) ) And the smoke sensor (19), and the temperature sensor (18) and the smoke sensor (19) are symmetrically arranged relative to the network security cabinet body (1).

2. The high-performance network security cabinet convenient for wire management according to claim 1, wherein: the back of network security rack body (1) is provided with installation cavity (101), and the back of network security rack body (1) adopts the network structure design, the inside of installation cavity (101) is provided with drier (102), the oral area of installation cavity (101) is provided with closing cap (103), closing cap (103) can be dismantled through the locking bolt with network security rack body (1) and be connected, the bottom fixedly connected with dust screen (104) of network security rack body (1), the inside of dust screen (104) is provided with wire hole (105), the inside fixed connection elasticity shrink cover (106) of wire hole (105).

3. The high-performance network security cabinet convenient for wire management according to claim 1, wherein: the control device (2) is respectively electrically connected with the control electromagnetic valve (5), the cooling fan (17), the temperature sensor (18) and the smoke sensor (19), the wind type numbers of the temperature sensor (18) and the smoke sensor (19) are respectively DHT11 and ME2-CO, and the two cooling fans (17) are symmetrically arranged on the vertical central line of the network safety cabinet body (1).

4. The high-performance network security cabinet convenient for wire management according to claim 1, wherein: the upper end fixedly connected with shunt tubes (61) of lower connecting pipe (6), the avris fixedly connected with of shunt tubes (61) sprays the one end of pipe (62), the other end of spraying pipe (62) extends to the inboard fixedly connected with of network security rack body (1) and sprays mouth (63), connecting pipe (64) are gone up to the upper end fixedly connected with of shunt tubes (61), go up another shunt tubes (61) of upper end fixedly connected with of connecting pipe (64).

5. The high-performance network security cabinet convenient for wire management according to claim 4, wherein: the spraying nozzles (63) are obliquely and downwards designed, and four spraying nozzles (63) are arranged on the surface of the shunt pipe (61) at equal intervals.

6. The high-performance network security cabinet convenient for wire management according to claim 1, wherein: the first sealing strip (7) is the same as the second sealing strip (8) in specification, and the first sealing strip (7) and the second sealing strip (8) are two magnetic strips with opposite magnetism.

7. The high-performance network security cabinet convenient for wire management according to claim 1, wherein: the network safety cabinet is characterized in that four supporting bases (12) and four universal wheels (13) are symmetrically arranged on the vertical central line of the network safety cabinet body (1), a threaded sleeve (121) is arranged at the upper end of each supporting base (12), a threaded base (122) is connected to the lower end of each threaded sleeve (121) in a threaded mode, the cross section of each threaded base (122) is of a T-shaped structural design, and the sum of the heights of the threaded sleeves (121) and the threaded bases (122) is larger than the height of the universal wheels (13).

8. The high-performance network security cabinet convenient for wire management according to claim 1, wherein: horizontal spout (14) and horizontal slider (15) mutual adaptation, and horizontal spout (14) and horizontal slider (15) are located the inboard equidistant distribution of network security cabinet body (1) and have three groups.

9. The high-performance network security cabinet convenient for wire management according to claim 1, wherein: the interior of the mounting plate (16) adopts a through hole design, four mounting grooves (161), a lower wiring plate (162) and lead holes (163) are symmetrically arranged in the mounting plate (16), the lower wiring plate (162) is positioned between the mounting grooves (161) and the lead holes (163), a lower wiring groove (164) is arranged in the lower wiring plate (162), a lower protective skin (165) is fixedly connected in the lower wiring groove (164), four sub-buckles (166) are symmetrically and fixedly connected at the side of the lower wiring plate (162) at the upper end of the mounting plate (16), a female buckle (167) is clamped and connected at the upper end of the female buckle (167), an upper wiring plate (168) is fixedly connected at the upper end of the upper wiring plate (168), an upper wiring groove (169) is arranged in the upper wiring plate (168), and an upper protective skin (170) is fixedly connected in the upper wiring groove (169), and a protective ring (171) is fixedly connected inside the lead hole (163).

10. The high-performance network security cabinet convenient for wire management according to claim 9, wherein: the lead holes (163) are distributed at equal intervals, the lead holes (163) correspond to the lower wire discharge grooves (164) and the upper wire discharge grooves (169) one by one, and the inner parts of the lower wire discharge plates (162), the lower protective covers (165), the upper wire discharge plates (168) and the upper protective covers (170) are all designed by through holes.

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