CN111782014A - A big data computer network security protection device - Google Patents

Abstract

The invention discloses a big data computer network safety protection device, which belongs to the technical field of computer network equipment and comprises a protection shell and a computer shell, wherein the protection shell which is used for protecting the computer shell and is in a rectangular frame structure is arranged on the outer side of the computer shell, one side of the protection shell is arranged in an open manner, a supporting plate is arranged in the protection shell, a mounting frame which is in a rectangular structure is arranged in the middle of the top end of the supporting plate, and the open end of the mounting frame faces towards the supporting plate. The invention synchronously fixes the left side wall and the right side wall of the computer network equipment, facilitates the installation of the computer network equipment by people, and also can center the computer network equipment during installation, so that the computer network equipment can be stably positioned in the middle side in the protective shell, the alignment of a display screen on the computer network equipment and a glass window on a cover plate is ensured, and the observation of the computer network equipment by people is facilitated.

Description

A big data computer network security protection device

technical field

The invention relates to the technical field of computer network equipment, in particular to a big data computer network security protection device.

Background technique

The combination of computing and communication had a profound effect on the way computer systems were organized; putting a large computer in a separate room, and then users taking their processing tasks to the room to get on the computer, this "computer center" ” concept is now completely obsolete; with a single computer handling all the computing needs of the entire organization, this old model has been replaced by a new model under which a large number of independent but interconnected These systems are called computer networks. With the rapid development of network technology, the application field of computer network equipment is also expanding, so as to innovate and design protective devices for computer network equipment, It plays a role in promoting the development of network technology.

Most of the existing protective devices for computer network equipment, because they cannot clamp the computer network equipment, but also center the computer network equipment, so that when the computer network equipment is fixed, it needs to be manually It performs the centering of the position and at the same time manually drives the fixed structure to clamp the equipment, which is cumbersome and inconvenient to operate. Therefore, it is urgent to develop a big data computer network security protection device.

SUMMARY OF THE INVENTION

1. Technical problems to be solved

The purpose of the present invention is to provide a big data computer network security protection device to solve the problems raised in the above background art.

2. Technical solutions

In order to solve the above problems, the present invention adopts the following technical solutions:

A big data computer network security protection device, comprising a protective casing and a computer casing, the outer side of the computer casing is provided with a protective casing that protects it and has a rectangular frame structure, and one side of the protective casing is provided. Open setting, the interior of the protective housing is provided with a support plate, and the middle of the top end of the support plate is provided with a mounting frame with a rectangular structure, and the open end of the mounting frame is set towards the support plate, and the inner side of the mounting frame is arranged There are two vertically arranged baffles, and the two baffles are respectively located at the front and rear ends of the installation frame, and the two baffles are symmetrical about the horizontal center line of the installation frame, the installation frame is used for supporting the computer casing, and The mounting frame is provided with a fixing mechanism for fixing the computer casing. The fixing mechanism includes a first pressing plate and a second pressing plate symmetrically arranged on the top of the mounting frame, and the two pressing plates are respectively arranged on the mounting frame. The left and right sides of the front of the frame, and each extrusion plate is vertically arranged, and the bottom end of each extrusion plate is provided with a slider, and the left and right sides of the top of the installation frame are respectively provided with corresponding side slides There is a chute that slides left and right, and the bottom end of each slider is respectively provided with a horizontally arranged rack plate, which is a first rack plate, a second rack plate, and two rack plates. The teeth of the gear are arranged opposite to each other, a transmission gear is arranged between the two rack plates, and the transmission gear meshes with the two rack plates. Both ends of the rotating shaft pass through the corresponding side baffles, and the baffles are rotatably connected to the rotating shaft. One end of the baffle is provided with a threaded ring, and the threaded ring of the rotating shaft is threadedly connected with a locking nut, the locking nut is located on the rear side of the rear baffle, and each rack plate is horizontally provided with a limiter. Each limit slide is slidably connected with a limit rod, both ends of each limit rod are fixedly connected to the baffles on the corresponding side, and the rear end of the protective shell The threaded rod extends horizontally forward, and the middle of the support plate is provided with a threaded hole for the threaded rod to pass through. The end is provided with a rotating torsion block, the left and right sides of the front of the support plate are respectively provided with limit slide bars symmetrical about the threaded rod, and the support plate is provided with limit holes for horizontal sliding of the corresponding limit slide bars, and One end of the limit sliding rod facing the rear side wall of the protective shell is fixedly connected with the protective shell, the support plate forms a sliding structure with the protective shell through the cooperation of the threaded rod and the limit sliding rod, and the support plate is close to the protective shell A cover plate for covering the open end of the protective casing is fixed on one side of the open end of the body, and a glass window for observing the computer casing is installed on the cover plate.

Preferably, the installation frame is hollowed out, and the front and rear ends of the top of the installation frame are respectively provided with extension plates arranged vertically upward, and the extension plates are located in the middle of the top end of the installation frame, and the extension plates at the rear end are horizontally provided with Screw, the middle of the extension plate is provided with a through hole for the screw to pass horizontally, and the thread structure on the through hole is consistent with the thread structure on the screw, the end of the screw passing through the rear extension plate is provided with a rubber extrusion piece.

Preferably, the bottom end of the support plate is provided with a first roller contacting the inner bottom of the protective casing, and the first rollers are arranged at the bottom end of the support plate at equal intervals.

Preferably, a plug-in block with a rectangular structure is provided on the cover plate, a plug-in groove is provided on the protective casing for snap connection with the plug-in block, and the end of the plug-in block is provided with a seal The gasket is tightly fitted with the inner wall of the insertion slot, the bottom end of the cover plate is provided with a second roller, and the lower end of the second roller is flush with the bottom end of the protective casing.

Preferably, extrusion blocks are arranged at equal intervals on the opposite end surfaces of the two extrusion plates, and rubber blocks are adhered to one end of each extrusion block facing away from the corresponding side extrusion plate.

3. Beneficial effects

1. The present invention can drive the support plate threadedly connected to it to slide on the limit slide rod through the rotation of the threaded rod, so as to facilitate people to adjust the position of the support plate and the protective shell, so that when the support plate extends out of the protective shell When it is outside, it is convenient for people to install and repair the computer network equipment above the support plate. When the support plate is retracted to the inside of the protective shell, the installed and repaired computer network equipment can be protected by the protective shell to reduce the In addition, through the fixed connection between the cover plate and the support plate, the cover plate can be opened and closed with the protective shell under the drive of the support plate when moving, and the cover plate and the protective shell can be opened and closed. The flexible performance of the shell connection is convenient for people to install the computer network equipment inside the protective shell and the later maintenance work, and through the snap connection between the protective shell and the cover, the computer can be connected between the protective shell and the cover. The network equipment is covered with protection to ensure the safe use of computer network equipment.

2. In the present invention, when the locking nut is rotated away from the rotating shaft, by manually driving the movement of the first pressing plate, the second pressing plate is engaged with the first rack plate and the transmission gear under the first pressing plate and the The meshing transmission between the transmission gear and the second rack plate and the first extruding plate move closer to or away from each other, so as to realize the clamping and loosening of the left and right side walls of the computer network equipment. The setting of the synchronous fixing method not only facilitates the installation of computer network equipment, but also can center the computer network equipment during installation, so that the computer network equipment can be stably located in the inner middle side of the protective shell to ensure The alignment of the display screen on the computer network equipment and the glass window on the cover plate is convenient for people to observe the computer network equipment.

3. In the present invention, the screw is rotated at the rear end extension plate, so that the free end of the screw rod squeezes the rear end face of the computer casing placed on the installation frame, so that the front end of the computer casing is tightly attached to the front end extension plate. On the side wall of the computer casing, the front and rear ends of the computer casing are fixed, and the stability of the computer casing is improved. When the computer casing is squeezed by the screw, the computer casing can be deformed by the deformation of the rubber extrusion block on the screw. Buffer protection.

4. In the present invention, through the connection between the plug-in block and the plug-in slot, the cover plate is connected to the open end of the protective casing in a snap-fit manner, and the fixed connection between the cover plate and the support plate makes the cover plate move when moving. It can be opened and closed with the protective shell under the driving of the supporting plate, which improves the flexibility of the connection between the cover plate and the protective shell, and facilitates the installation of computer network equipment inside the protective shell and the later maintenance work. The lowest end of the two rollers is flush with the bottom surface of the protective casing, so that the cover plate can be supported by the rolling of the second roller when the cover plate is opened or closed, so as to improve the stability of the cover plate.

5. The extrusion surface of the extrusion plate of the present invention forms an uneven structure through the setting of the extrusion block on it. The external atmosphere is connected to improve the heat dissipation rate of the side wall of the computer casing. In addition, the deformation of the rubber block on the extrusion block can reduce the extrusion force of the extrusion block on the side wall of the computer casing, so as to realize the cooling effect of the computer casing. protection.

Description of drawings

Fig. 1 is the front view internal structure schematic diagram of the present invention;

Fig. 2 is the side view internal structure schematic diagram of the present invention;

Fig. 3 is the partial side view internal structure schematic diagram of the present invention;

Fig. 4 is a schematic view of enlarged structure at place A in Fig. 1;

FIG. 5 is an enlarged schematic view of the structure at B in FIG. 2 .

Reference numerals: 1-protective casing, 2-cover plate, 3-supporting plate, 4-installation frame, 5-computer casing, 6-first pressing plate, 7-second pressing plate, 8-th 1 rack plate, 9- second rack plate, 10- chute, 11- transmission gear, 12- shaft, 13- baffle, 14- limit rod, 15- limit slide, 16- slider, 17-Extrusion block, 18-Rubber block, 19-Threaded rod, 20-Threaded perforation, 21-Limited sliding rod, 22-Limited perforation, 23-First roller, 24-Turn torsion block, 25-Lock Nut, 26-extension plate, 27-screw, 28-rubber extrusion block, 29-second roller, 30-insertion block, 31-insertion slot, 32-gasket, 33-glass window.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Example

As shown in Figures 1-5, a big data computer network security protection device includes a protective casing 1 and a computer casing 5. The outer side of the computer casing 5 is provided with a protective casing in a rectangular frame structure to protect it. body 1, and one side of the protective shell 1 is open, a support plate 3 is provided inside the protective shell 1, and a mounting frame 4 having a rectangular structure is provided in the middle of the top end of the supporting plate 3, and the mounting frame 4 is The open end is disposed toward the support plate 3, and the inner side of the installation frame 4 is provided with two vertically arranged baffles 13, and the two baffles 13 are respectively located at the front and rear ends of the installation frame 4, and the two baffles 13 are related to the installation frame. The horizontal center line of 4 is symmetrical, the mounting frame 4 is used to support the computer casing 5, and the mounting frame 4 is provided with a fixing mechanism for fixing the computer casing 5. The pressing plate 6 and the second pressing plate 7, the two pressing plates are respectively arranged on the left and right sides of the front of the installation frame 4, and each pressing plate is vertically arranged, and the bottom end of each pressing plate is provided with There is a slider 16, and extrusion blocks 17 are arranged at equal intervals on the opposite end faces of the two extrusion plates, and rubber blocks 18 are adhered to one end of each extrusion block 17 facing away from the corresponding side extrusion plate, and the extrusion blocks 17 are pressed together. The extrusion surface of the board forms an uneven structure through the setting of the extrusion block 17 on it. In order to improve the heat dissipation speed of the side wall of the computer shell 5, in addition, through the deformation of the rubber block 18 on the extrusion block 17, the extrusion force of the extrusion block 17 to the side wall of the computer shell 5 can be reduced, so as to achieve the For the protection of the housing 5, the left and right sides of the top of the installation frame 4 are respectively provided with chute 10 for the corresponding side slider 16 to slide left and right, and the bottom end of each slider 16 is respectively provided with a horizontally arranged rack plate, and They are the first rack plate 8 and the second rack plate 9 respectively, the teeth on the two rack plates are arranged opposite to each other, a transmission gear 11 is arranged between the two rack plates, and the transmission gear 11 is connected to the two racks The plates are meshed, the middle of the transmission gear 11 has a rotating shaft 12, and the rotating shaft 12 is fixedly connected with the transmission gear 11. Both ends of the rotating shaft 12 pass through the corresponding side baffles 13, and the baffles 13 are rotatably connected with the rotating shaft 12. After the rotating shaft 12 penetrates One end of the end baffle 13 continues to extend backward and passes through the rear end side wall of the installation frame 4, and the end of the rotating shaft 12 passing through the rear baffle 13 is provided with a threaded ring, and the threaded ring of the rotating shaft 12 is threadedly connected with a locking ring. Nut 25, the locking nut 25 is located on the rear side of the rear end baffle 13, each rack plate is provided with a limit slide 15 horizontally, and the interior of each limit slide 15 is slidably connected with a limit. Position rods 14, both ends of each limit rod 14 are fixedly connected with the baffles 13 on the corresponding side;

The installation frame 4 is hollowed out, and the front and rear ends of the top of the installation frame 4 are respectively provided with extension plates 26 arranged vertically upward, and the extension plates 26 are located in the middle of the top of the installation frame 4, and the extension plate 26 at the rear end is provided with screws horizontally. 27. The middle of the extension plate 26 is provided with a through hole for the screw rod 27 to pass through horizontally, and the thread structure on the through hole is consistent with the screw thread structure on the screw rod 27. The end of the screw rod 27 passing through the rear end extension plate 26 is provided with a rubber extrusion The pressing block 28 is rotated by the screw thread 27 at the rear end of the extension plate 26, so that the free end of the screw rod 27 presses the rear end surface of the computer casing 5 placed on the mounting frame 4, so that the front end of the computer casing 5 is pressed. It is closely attached to the side wall of the front end extension plate 26 to realize the fixation of the front and rear ends of the computer casing 5 and improve the stability of the computer casing 5. When the screw 27 squeezes the computer casing 5, the rubber can pass through the screw 27. The deformation generated by the extrusion block 28 can buffer and protect the computer casing 5, and the hollow structure of the installation frame 4 can speed up the heat dissipation speed of the bottom of the computer casing 5 on the installation frame 4;

A threaded rod 19 extends horizontally forward at the rear end of the protective casing 1, and a threaded hole 20 is provided in the middle of the support plate 3 for the threaded rod 19 to pass through. The threaded rod 19 is rotatably connected to the rear end of the protective casing 1, The end of the threaded rod 19 located on the outer side of the rear end of the protective housing 1 is provided with a rotating torsion block 24 , and the left and right sides of the front of the support plate 3 are respectively provided with limit sliding rods 21 symmetrical about the threaded rod 19 , and the support plate 3 is provided with a limit slide rod 21 . There is a limit hole 22 for horizontal sliding of the limit slide bar 21, and one end of the limit slide bar 21 facing the rear end side wall of the protective shell 1 is fixedly connected with the protective shell 1, and the support plate 3 is connected to the protective shell 1 through the threaded rod 19. The cooperation of the limit sliding rod 21 and the protective casing 1 constitute a sliding structure. The bottom end of the support plate 3 is provided with a first roller 23 that contacts the inner bottom of the protective casing 1, and the first rollers 23 are arranged on the supporting plate at equal intervals. 3, the bottom end of the support plate 3 can be supported by the first roller 23 to improve the stability of the support plate 3. In addition, the rolling of the first roller 23 can match the support plate 3 when moving, so as to improve the stability of the support plate 3. Promote the movement of the support plate 3;

The side of the support plate 3 close to the open end of the protective shell 1 is fixedly provided with a cover plate 2 for covering the open end of the protective shell 1, and a glass window 33 for observing the computer shell 5 is installed on the cover plate 2. The board 2 is provided with a plug-in block 30 having a rectangular structure, the protective casing 1 is provided with a plug-in slot 31 which is connected with the plug-in block 30 by clamping, and the end of the plug-in block 30 is provided with a sealing gasket 32, and The gasket 32 is in close contact with the inner wall of the insertion slot 31. The bottom end of the cover plate 2 is provided with a second roller 29, and the lower end of the second roller 29 is flush with the bottom end of the protective housing 1. The connection between the block 30 and the insertion slot 31 enables the cover plate 2 to be snap-connected to the open end of the protective casing 1, and the fixed connection between the cover plate 2 and the support plate 3 enables the cover plate 2 to move when moving. It can be opened and closed with the protective shell 1 under the driving of the supporting plate 3, which improves the flexibility of the connection between the cover plate 2 and the protective shell 1, and facilitates the installation of computer network equipment inside the protective shell 1 and the later installation of the protective shell 1. In the maintenance work, the lowermost end of the second roller 29 is arranged flush with the bottom surface of the protective casing 1, so that the cover plate 2 can be supported by the rolling of the second roller 29 when the cover plate 2 is moved when it is opened or closed. , in order to improve the stability of the cover plate 2.

The specific application process of the above-mentioned big data computer network security protection device is: when the computer network equipment is installed, firstly, the threaded rod 19 is driven to rotate by rotating the rotating torsion block 24, so that the support plate 3 threadedly connected with the threaded rod 19 can be driven to rotate. The limit slide bar 21 is slid, so as to extend one end of the support plate 3 to the outside of the protective housing 1, and at the same time, through the fixed connection between the cover plate 2 and the support plate 3, the support plate of the cover plate 2 is moved. 3 is driven to move to the end away from the protective housing 1, and secondly, when the lock nut 25 is rotated away from the rotating shaft 12, the movement of the first pressing plate 6 is manually pulled, so that the second pressing plate 7 is in the first position. The meshing of the first rack plate 8 and the transmission gear 11 under the extrusion plate 6 and the meshing of the transmission gear 11 and the second rack plate 9 drive the first extrusion plate 6 away from each other, so as to increase the top end of the installation frame 4 For the installation area of the computer network equipment, secondly place the computer network equipment on the top of the installation frame 4 and make the front surface of the computer network equipment fit with the extension plate 26 on the front end of the installation frame 4, and then manually push the first extrusion plate. The movement of 6 makes the second pressing plate 7 move away from the first pressing plate 6 under the meshing transmission of the gear and the rack, so as to clamp the left and right side walls of the computer network equipment. The setting of the synchronous fixing method on the left and right side walls of the equipment not only facilitates people to install the computer network equipment, but also can center the computer network equipment during installation, so that the computer network equipment can be stably located in the protective shell 1. The inner middle side is to ensure the alignment of the display screen on the computer network equipment and the glass window 33 on the cover 2, which is convenient for people to observe the computer network equipment;

Secondly, the screw 27 is rotated on the thread of the rear extension plate 26, so that the free end of the screw 27 presses the rear end surface of the computer casing 5 placed on the mounting frame 4, so that the front end of the computer casing 5 is tightly attached to the On the side wall of the front end extension plate 26, the front and rear ends of the computer casing 5 are fixed, and the stability of the computer casing 5 is improved. When the screw 27 squeezes the computer casing 5, the rubber extrusion block on the screw 27 can be pressed The deformation produced by 28 can buffer and protect the computer casing 5, and then drive the threaded rod 19 to rotate by rotating the twist block 24 in the opposite direction, so that the support plate 3 threadedly connected with the threaded rod 19 slides on the limit slide rod 21, In this way, the protruding end of the support plate 3 is contracted to the inner side of the protective shell 1. At this time, through the fixed connection between the cover plate 2 and the support plate 3, the cover plate 2 is driven by the support plate 3 when moving and the protective shell is connected. The body 1 is snap-connected, and the protective shell 1 and the cover 2 are snap-connected, so that the protective shell 1 and the cover 2 can cover the computer network equipment to ensure the safety of the computer network equipment. ;

When the computer network equipment is in use, the heat dissipation speed of the side wall of the computer casing 5 can be improved by the hollow-shaped installation frame 4 and the setting of the extrusion block 17 on the extrusion plate, thus completing the security protection device of the big data computer network. Use process.

Those skilled in the art should realize that the above embodiments are only used to illustrate the present invention, but not to limit the present invention. Changes and modifications will fall within the scope of the claims of the present invention.

Claims (5)

1. A big data computer network security protection device, comprising a protective casing (1) and a computer casing (5), the outer side of the computer casing (5) is provided with a rectangular frame structure for protecting it. A protective casing (1), and one side of the protective casing (1) is open, characterized in that a support plate (3) is provided inside the protective casing (1), and the support plate (3) is provided with a support plate (3). A mounting frame (4) having a rectangular structure is arranged in the middle of the top end, and the open end of the mounting frame (4) is arranged toward the support plate (3). The inner side of the mounting frame (4) is provided with two vertically arranged baffles (13), and the two baffles (13) are respectively located at the front and rear ends of the installation frame (4), and the two baffles (13) are symmetrical with respect to the horizontal center line of the installation frame (4), and the installation frame ( 4) It is used to support the computer casing (5), and the mounting frame (4) is provided with a fixing mechanism for fixing the computer casing (5). a pressing plate (6), a second pressing plate (7), the two pressing plates are respectively arranged on the left and right sides of the front of the mounting frame (4), and each pressing plate is vertically arranged, and A sliding block (16) is provided at the bottom end of each pressing plate, and sliding grooves (10) for the corresponding side sliding block (16) to slide left and right are respectively provided on the left and right sides of the top of the mounting frame (4). The bottom end of each sliding block (16) is respectively provided with a horizontally arranged rack plate, which is a first rack plate (8), a second rack plate (9), and two racks respectively. The teeth on the plate are arranged opposite to each other, a transmission gear (11) is arranged between the two rack plates, and the transmission gear (11) meshes with the two rack plates, and a middle part of the transmission gear (11) runs through the A rotating shaft (12), and the rotating shaft (12) is fixedly connected with the transmission gear (11), both ends of the rotating shaft (12) pass through the corresponding side baffles (13), and the baffles (13) and the rotating shaft (12) rotate connected, the rotating shaft (12) continues to extend backward through one end of the rear end baffle (13) and passes through the rear end side wall of the mounting frame (4), and the rotating shaft (12) passes through the end of the rear baffle (13) One end is provided with a threaded ring, and a locking nut (25) is threadedly connected to the threaded ring of the rotating shaft (12), and the locking nut (25) is located on the rear side of the rear end baffle (13). A limit slide (15) is horizontally arranged on the strip, and a limit rod (14) is slidably connected to the inside of each limit slide (15), and each limit rod (14) Both ends of the protective casing (1) are fixedly connected to the baffle plate (13) on the corresponding side, the rear end of the protective casing (1) is horizontally and forwardly extended with a threaded rod (19), and the middle of the support plate (3) is provided with a threaded rod (19). The threaded hole (20) through which the rod (19) is threaded, the threaded rod (19) is rotatably connected with the rear end of the protective casing (1), and the threaded rod (19) is located outside the rear end of the protective casing (1) The end of the support plate (3) is provided with a rotating torsion block (24), the left and right sides of the front of the support plate (3) are respectively provided with limit sliding rods (21) symmetrical about the threaded rod (19), and the support plate ( 3) There is a limit hole (22) for the corresponding limit slide rod (21) to slide horizontally, and the end of the limit slide rod (21) facing the rear side wall of the protective casing (1) is connected to the protective casing (1). 1) Fixed connection, the support plate (3) forms a sliding structure with the protective casing (1) through the cooperation of the threaded rod (19) and the limit sliding rod (21), and the supporting plate (3) is close to the protective casing (1) One side of the open end is fixedly provided with a cover plate (2) covering the open end of the protective casing (1), and a glass window for observing the computer casing (5) is installed on the cover plate (2) (33). 2. A big data computer network security protection device according to claim 1, characterized in that the mounting frame (4) is hollowed out, and the front and rear ends of the top of the mounting frame (4) are respectively provided with vertical The extension plate (26) is arranged upward, and the extension plate (26) is located in the middle of the top end of the installation frame (4), and the extension plate (26) at the rear end is provided with a screw (27) horizontally, the extension plate (26) There is a through hole for the screw (27) to pass through horizontally in the middle, and the thread structure on the through hole is consistent with the thread structure on the screw (27), the screw (27) passes through the rear end extension plate (26) One end is provided with a rubber extrusion block (28). 3. A big data computer network security protection device according to claim 1, wherein the bottom end of the support plate (3) is provided with a first roller ( 23), and the first rollers (23) are arranged at the bottom end of the support plate (3) at equal intervals. 4 . The big data computer network security protection device according to claim 1 , wherein the cover plate ( 2 ) is provided with a plug-in block ( 30 ) having a rectangular structure, and the protective shell (1) A plug-in slot (31) for snap-connecting with the plug-in block (30) is provided on the plug-in block (30). The inner wall of the insertion slot (31) is closely fitted, the bottom end of the cover plate (2) is provided with a second roller (29), and the lower end of the second roller (29) is in contact with the bottom of the protective casing (1). End flush setting. 5. A big data computer network security protection device according to claim 1, characterized in that, there are pressing blocks (17) at equal intervals on the opposite end faces of the two pressing plates, and each pressing plate is provided with pressing blocks (17) at equal intervals Rubber blocks (18) are adhered to one end of the block (17) facing away from the corresponding side pressing plate.

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