An anti-jamming communication intercom

Abstract

The application discloses an anti-interference communication intercom, which comprises an intercom body, a display screen, an antenna, an indicating lamp, an adjusting knob and a conversation window mechanism. The conversation window mechanism is arranged at the front side of the microphone and the loudspeaker in the intercom body. Under the action of a servo motor, a gear drives a rectangular frame seat to move longitudinally through the cooperation with a rack, and the rectangular frame seat drives a frame to move longitudinally through a first push rod and a second push rod at four inner ends. When the rectangular frame seat moves to the bottom side, the first push rod drives a small pulley to move from a sliding groove into a positioning groove, so that the frame is pushed forward to be close to the rear side of the through opening, is isolated and protected by an inner sound-absorbing cotton layer, dust is prevented from entering the environment with much dust, the volume is reduced when there are much noises, the noises in the conversation process are partially shielded, and the practicability of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication equipment, and particularly relates to an anti-interference communication intercom. BACKGROUND

[0002] During the work in construction sites and factories, people often communicate with each other through intercoms, which is convenient for people to understand the whole working condition and avoids people running back and forth for communication;

[0003] At present, a dustproof intercom for construction sites is disclosed in Chinese patent application No. CN201720247380.8, which comprises a machine body and a dustproof cover. A display screen, a loudspeaker and function buttons are sequentially arranged on the surface of the machine body, and a dustproof cover is hingedly arranged on one side of the machine body. A dust absorption net is detachably arranged on the inner side of the dustproof cover, and an installation frame is arranged at the position corresponding to the display screen of the dustproof cover. A protective cover is arranged on one side of the installation frame, and a solar cell panel is arranged on one side of the protective cover. An antenna is arranged at one end of the machine body, and a frequency modulation knob and a volume adjustment knob are arranged on one side of the machine body. A talkback button is arranged on the upper side of one side of the machine body, and a lighting lamp is arranged on the upper side of the other side of the machine body. An anti-interference device is arranged in the machine body and connected with the antenna, which greatly improves the anti-interference performance of the intercom and effectively ensures the communication quality of the intercom.

[0004] However, the intercom of the prior art is inconvenient to prevent dust in the construction site with much dust during use, and dust is easy to enter the interior through the microphone port and the loudspeaker port, which affects the normal use of the equipment. In addition, it is inconvenient to partially shield the noise when there is much noise, and the communication quality is relatively poor. SUMMARY

[0005] Therefore, in order to solve the above problems, the present application provides an anti-interference communication intercom.

[0006] The present application is implemented as follows: an anti-interference communication intercom is constructed, which comprises an intercom body, a display screen, an antenna, an indicator light, an adjustment knob and a conversation window mechanism. The display screen is embedded on the top side of the front part of the intercom body. The antenna, the indicator light and the adjustment knob are arranged on the top part of the intercom body from left to right. An anti-interference device is connected to the antenna and arranged in the interior of the intercom body. The conversation window mechanism is arranged on the front side of the microphone and the loudspeaker in the interior of the intercom body and plays a protective role. The conversation window mechanism comprises a positioning block fixed to the front side of the interior of the intercom body, a rectangular supporting piece integrally formed on the bottom side of the front side of the positioning block, a through port arranged on the middle and lower side of the interior of the rectangular supporting piece, and a displacement protection structure arranged on the rear side of the rectangular supporting piece for preventing dust from entering and isolating and adsorbing part of the noise.

[0007] Preferably, the shift protection structure comprises a drive assembly fixed to the middle of the back of the rectangular support, a filter assembly connected to the front of the drive assembly, a support frame sliding on the left and right sides of the filter assembly, and a support leg arranged outside the support frame, the front of the support leg being fastened to the rectangular support.

[0008] Preferably, the support frame is provided with two, and the two support frames are respectively connected to the left and right sides of the drive assembly, and the support leg is provided with six, and three are respectively arranged on the two support frames.

[0009] Preferably, when the filter assembly is located at the bottom, the front end of the filter assembly is in contact with the through hole.

[0010] Preferably, the drive assembly comprises a first support rod fixed to one side of the rectangular support, a servo motor fastened to the right side of the first support rod, a rotating shaft rod connected to the left side output end of the servo motor, a second support rod rotating on the other end of the rotating shaft rod, a gear fixed to the middle of the outer surface of the rotating shaft rod, and a rack meshing with the front side of the gear, the right side of the rotating shaft rod penetrating and rotating on the inside of the first support rod, the front side of the second support rod being fixed to the rectangular support, and the front end of the rack being connected to the filter assembly.

[0011] Preferably, the filter assembly comprises a rod column connected to the back of the drive assembly, the rod column being embedded in the middle of the back of the rectangular frame seat, the left and right sides of the rectangular frame seat being rotatably connected with rollers, the upper right side of the inside of the rectangular frame seat being rotatably connected with a first push rod, the other end of the first push rod penetrating the inside of the filter blocking part and being connected with a support plate, the remaining three sides of the four ends of the inside of the rectangular frame seat being rotatably connected with the filter blocking part through a second push rod, and the front side of the support plate being fixed to the rectangular support.

[0012] Preferably, the rollers are provided with four, and the four rollers are respectively located at the four ends of the outer surface of the rectangular frame seat, and the four rollers are respectively slidably connected to the inside of the two support frames.

[0013] Preferably, the inside of the support plate is provided with a sliding groove, and a positioning groove is arranged at the bottom of the back of the sliding groove.

[0014] Preferably, the outside of the first push rod is provided with a small pulley, the small pulley is inserted into the inside of the sliding groove and is slidably connected therewith, and the small pulley is slidably connected to the inside of the positioning groove when it is located at the bottom.

[0015] Preferably, the filter blocking part comprises a frame connected to the first push rod and the second push rod at the four ends, a cover fixedly connected to the middle of the back of the frame, a circular hole slot arranged in the middle of the front of the cover, an acoustic cotton layer filled in the inside of the cover, a cover piece fastened to the four ends of the back of the cover, and a circular through hole arranged in the inside of the cover piece.

[0016] Preferably, the small pulley is made of stainless steel.

[0017] Preferably, the rectangular frame seat is made of aluminum alloy.

[0018] The application has the following advantages: the application provides an anti-interference communication intercom by improvement, compared with the same type of equipment, has the following improvements:

[0019] Advantage 1: the anti-interference communication intercom optimally sets a dialogue window mechanism at the front side of the microphone and the loudspeaker in the intercom body, under the action of the servo motor, the gear drives the rectangular frame seat to move longitudinally through the cooperation with the rack, and the first push rod and the second push rod at the four ends of the inner side of the rectangular frame seat drive the frame to move longitudinally, when the rectangular frame seat moves to the bottom side, the first push rod drives the small pulley to move from the sliding groove into the positioning groove, so that the frame is pushed forward to be close to the rear side of the through hole, and is isolated and protected by the inner sound-absorbing cotton layer, so as to avoid dust entering in the environment with much dust, and to make the volume smaller when there is much noise, and to listen to again, to partially shield the noise in the communication process, to improve the noise in the communication process to a certain extent, and to improve the practicability of the equipment.

[0020] Advantage 2: the anti-interference communication intercom sets two support frames, and the two support frames are connected to the left and right sides of the driving assembly respectively, to play a limiting role, to ensure the stability of the driving assembly, the support feet are set to be three on the two support frames respectively, to ensure the stability of the installation, and the four rollers are located at the four ends of the outer surface of the rectangular frame seat, and the four rollers are slidably connected to the inner sides of the two support frames respectively, to ensure the stability of the displacement.

[0021] Advantage 3: the anti-interference communication intercom sets the sliding groove in the inner side of the support plate, and sets the positioning groove at the bottom rear part of the sliding groove, the first push rod is provided with the small pulley, and the small pulley is inserted into the inner side of the sliding groove and is slidably connected thereto, to ensure the stability of the displacement of the small pulley, and the small pulley is slidably connected to the inner side of the positioning groove when it is at the bottom side, so that the small pulley drives the filter part to move forward when it moves to the bottom side, to be close to the rear side of the through hole.

[0022] Advantage 4: the anti-interference communication intercom is provided with the cover sheet at the four ends of the rear part of the cover, and the sound-absorbing cotton layer can be replaced when there is much dust adsorbed and filtered. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic diagram of the application;

[0024] Figure 2 is a structural schematic diagram of the dialogue window mechanism of the application;

[0025] Figure 3 is the structural schematic diagram of the displacement protection structure of the present application;

[0026] Figure 4 is the structural schematic diagram of the driving assembly of the present application;

[0027] Figure 5 is the structural schematic diagram of the filtering assembly of the present application;

[0028] Figure 6 is the structural schematic diagram of the small pulley and the sliding groove connection of the present application;

[0029] Figure 7 is the structural schematic diagram of the positioning groove of the present application;

[0030] Figure 8 is the structural schematic diagram of the filtering component of the present application.

[0031] Among them: the interphone body-1, the display screen-2, the antenna-3, the indicator light-4, the adjusting knob-5, the interlocutor window mechanism-6, the positioning block-61, the rectangular supporting sheet-62, the through port-63, the displacement protection structure-64, the driving assembly-641, the filtering assembly-642, the supporting frame-643, the supporting leg-644, the first supporting rod-6411, the servo motor-6412, the rotating shaft rod-6413, the second supporting rod-6414, the gear-6415, the rack-6416, the rod column-6421, the rectangular frame seat-6422, the roller-6423, the first push rod-6424, the supporting plate-6425, the second push rod-6426, the filtering component-6427, the small pulley-64241, the sliding groove-64251, the positioning groove-64252, the frame-64271, the cover-64272, the round hole slot sheet-64273, the sound absorbing cotton layer-64274, the cover sheet-64275, the round through hole-64276. DETAILED DESCRIPTION

[0032] The present application will be described in detail below with the accompanying drawings. The technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0033] Please refer to Figure 1The application discloses an anti-interference communication intercom, which comprises an intercom body 1, a display screen 2, an antenna 3, an indicator lamp 4, an adjusting knob 5 and a conversation window mechanism 6. The display screen 2 is embedded on the top side of the front part of the intercom body 1. The antenna 3, the indicator lamp 4 and the adjusting knob 5 are arranged on the top of the intercom body 1 from left to right. An anti-interference device is connected to the antenna 3 and arranged in the intercom body 1, which plays an anti-interference role and guarantees the communication quality. The conversation window mechanism 6 is arranged on the front side of the microphone and the loudspeaker in the intercom body 1, which plays a protection role and avoids dust from entering the intercom body 1 in a dusty environment. The conversation window mechanism 6 also plays a blocking role in a certain extent and reduces the noise volume when the noise is relatively large.

[0034] Please refer to Figure 1 and Figure 2 The anti-interference communication intercom comprises a positioning block 61 fixed to the front side in the intercom body 1, a rectangular supporting sheet 62 integrally formed on the bottom of the positioning block 61, a through hole 63 arranged in the middle and lower side of the rectangular supporting sheet 62 and a displacement protection structure 64 arranged on the rear side of the rectangular supporting sheet 62 and used for avoiding dust from entering and isolating part of the noise. The displacement protection structure 64 is longitudinally displaced and protects the rear side of the through hole 63 when it is moved to the bottom side.

[0035] Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The anti-interference communication intercom comprises a driving assembly 641 fixed to the middle side of the rear part of the rectangular supporting sheet 62, a filtering assembly 642 connected to the front side of the driving assembly 641, which is displaced up and down under the action of the driving assembly 641, so that the filtering assembly 642 shields the rear side of the through hole 63 and plays a protection role, a supporting frame 643 supporting and sliding on the left and right sides of the filtering assembly 642 and a supporting leg 644 arranged on the outer side of the supporting frame 643. The supporting frame 643 plays a limiting sliding role on the filtering assembly 642, and the supporting leg 644 is fastened to the rectangular supporting sheet 62 on the front side and is positioned under the action of the supporting leg 644.

[0036] The supporting frame 643 is provided with two supporting frames 643 connected to the left and right sides of the driving assembly 641, which plays a limiting role and guarantees the stability of the driving assembly 641. The supporting leg 644 is provided with six supporting legs 644, three of which are arranged on each of the two supporting frames 643, so as to guarantee the stability of the installation. When the filtering assembly 642 is located at the bottom side, the front end thereof is in contact with the through hole 63, so as to play a protection role.

[0037] The driving assembly 641 comprises a first supporting rod 6411 fixed with the rectangular supporting sheet 62, a servo motor 6412 fastened to the right side of the first supporting rod 6411, a rotating shaft rod 6413 connected to the left side output end of the servo motor 6412, a second supporting rod 6414 supported to rotate at the other end of the rotating shaft rod 6413, the rotating shaft rod 6413 rotates in the first supporting rod 6411 and the second supporting rod 6414 under the action of the servo motor 6412, a gear 6415 fixed to the middle part of the outer surface of the rotating shaft rod 6413, and a rack 6416 engaged with the front side of the gear 6415, the gear 6415 rotates synchronously with the rotating shaft rod 6413, and the rack 6416 moves under the action of the gear 6415, the right side of the rotating shaft rod 6413 penetrates and rotates in the inner side of the first supporting rod 6411, the front side of the second supporting rod 6414 is fixed with the rectangular supporting sheet 62, and plays a supporting and positioning role, and the front end of the rack 6416 is connected with the filtering assembly 642, so that the filtering assembly 642 moves under the action of the rack 6416;

[0038] The filtering assembly 642 comprises a rod column 6421 connected with the rack 6416 at the rear side, so as to be driven by the rack 6416 to move, the rod column 6421 is embedded in the middle side of the rear part of a rectangular frame seat 6422, the rod column 6421 drives the rectangular frame seat 6422 to move synchronously, the material used by the rectangular frame seat 6422 is aluminum alloy, which is light in quality and not easy to rust, the left and right sides of the rectangular frame seat 6422 are rotatably connected with a roller 6423, the right upper side inside the rectangular frame seat 6422 is rotatably connected with a first push rod 6424, the other end of the first push rod 6424 penetrates the inner side of a filter blocking part 6427 and is connected with a supporting plate 6425, the first push rod 6424 drives the filter blocking part 6427 to move under the limiting support of the supporting plate 6425, the other three sides of the four ends inside the rectangular frame seat 6422 are rotatably connected with the filter blocking part 6427 through a second push rod 6426 respectively, so as to ensure the stability of the movement of the filter blocking part 6427, and the front side of the supporting plate 6425 is fixed with the rectangular supporting sheet 62, so as to play a mounting and positioning role;

[0039] The four rollers 6423 are arranged at four ends of the outer surface of the rectangular frame seat 6422, and the four rollers 6423 are slidably connected to the inner sides of the two support frames 643 respectively, so as to ensure the stability of the displacement; the inner side of the support plate 6425 is provided with a sliding groove 64251, and the bottom side of the sliding groove 64251 is provided with a positioning groove 64252; the outer side of the first push rod 6424 is provided with a small pulley 64241 made of stainless steel, and the small pulley 64241 is slidably connected to the inner side of the sliding groove 64251, so as to limit the movement and ensure the stability of the small pulley 64241; when the small pulley 64241 is located at the bottom side, the small pulley 64241 is slidably connected to the inner side of the positioning groove 64252, so that the small pulley 64241 drives the filter part 6427 to move forward when the small pulley 64241 moves to the bottom side, so as to be close to the rear side of the through hole 63;

[0040] The filter part 6427 comprises a frame 64271 connected to the first push rod 6424 and the second push rod 6426 respectively, the frame 64271 is driven to move by the first push rod 6424 and the second push rod 6426, a cover 64272 fixedly connected to the middle side of the rear part of the frame 64271, a circular hole groove 64273 arranged in the front middle side of the cover 64272, an acoustic cotton layer 64274 filled in the inner side of the cover 64272, so as to isolate dust through the acoustic cotton layer 64274, and to isolate part of the sound volume under the action of the acoustic cotton layer 64274, so as to improve the quality of the call, a cover sheet 64275 fastened to the four ends of the rear part of the cover 64272, and a circular through hole 64276 arranged in the inner side of the cover sheet 64275, so that the acoustic cotton layer 64274 in the inner side can be replaced by disassembling the cover sheet 64275.

[0041] The anti-interference communication intercom provided by the application has the following working principle:

[0042] First, the intercom body 1 is taken to the position where the call is needed to be used;

[0043] Second, when the signal is good and the power of the intercom body 1 is sufficient, the call quality of the intercom body 1 is good, and the dialogue is directly transmitted through the through hole 63;

[0044] Third, in the environment of more dust and more noise, the starting servo motor 6412 can be controlled, the servo motor 6412 is started to drive the rotating shaft rod 6413 to rotate inside the first support rod 6411 and the second support rod 6414, the rotating shaft rod 6413 drives the gear 6415 to rotate synchronously when rotating, the gear 6415 drives the rack 6416 to move to make the rod column 6421 drive the rectangular frame seat 6422 to move vertically inside the sliding groove 64251 of the support plate 6425 under the support of the roller 6423, so that the rectangular frame seat 6422 drives the frame 64271 to move vertically through the first push rod 6424 and the second push rod 6426 at the four inner sides respectively, when the rectangular frame seat 6422 moves to the bottom side, the first push rod 6424 drives the small pulley 64241 to move from the sliding groove 64251 into the positioning groove 64252, so that the frame 64271 is pushed forward to close to the rear side of the opening 63.

[0045] Fourth, when the frame 64271 is displaced to the rear side of the opening 63, the dust is isolated by the sound-absorbing cotton layer 64274 in the cover 64272, and part of the volume is isolated under the action of the sound-absorbing cotton layer 64274, so as to improve the quality of the call, when the opening 63 is not shielded, the servo motor 6412 can be started to reset to make the frame 64271 move to the top side and remove the shielding of the sound-absorbing cotton layer 64274.

[0046] The application provides an anti-interference communication intercom by improvement, a dialogue window mechanism 6 is arranged at the front side of the microphone and the loudspeaker in the intercom main body 1, under the action of the servo motor 6412, the gear 6415 drives the rectangular frame seat 6422 to move longitudinally through cooperation with the rack 6416, the first push rod 6424 and the second push rod 6426 at the four ends of the inner side of the rectangular frame seat 6422 drive the frame 64271 to move longitudinally, when the rectangular frame seat 6422 moves to the bottom side, the first push rod 6424 drives the small pulley 64241 to move from the sliding groove 64251 into the positioning groove 64252, so that the frame 64271 is pushed forward to be close to the rear side of the through hole 63, the sound insulation cotton layer 64274 at the inner side is used for isolation and protection, dust in the environment is prevented from entering, the volume is reduced when there is much noise, the noise in the communication process is partially blocked, the noise in the communication process is improved to a certain extent, and the practicability of the equipment is improved; the support frame 643 is provided with two, and the two support frames 643 are connected to the left and right sides of the driving assembly 641, the support frame 643 plays a limiting role, the stability of the driving assembly 641 is guaranteed, the supporting leg 644 is provided with six, and three supporting legs 644 are arranged on the two support frames 643 respectively, so that the stability of installation is guaranteed, the roller 6423 is provided with four, and the four rollers 6423 are located at the four ends of the outer surface of the rectangular frame seat 6422, and the four rollers 6423 are slidably connected to the inner sides of the two support frames 643 respectively, so that the stability of movement is guaranteed; the sliding groove 64251 is formed in the inner side of the supporting plate 6425, and the positioning groove 64252 is arranged at the bottom rear part of the sliding groove 64251, the small pulley 64241 is arranged at the outer side of the first push rod 6424 and is slidably connected to the inner side of the sliding groove 64251, so that the stability of movement of the small pulley 64241 is guaranteed, and the small pulley 64241 is slidably connected to the inner side of the positioning groove 64252 when the small pulley 64241 is located at the bottom side, so that the filter part 6427 is pushed forward when the small pulley 64241 moves to the bottom side, and the filter part 6427 is close to the rear side of the through hole 63; the cover plate 64275 is tightly arranged at the four ends of the rear part of the warehouse cover 64272, when much dust is adsorbed and filtered, the sound insulation cotton layer 64274 in the interior can be replaced by disassembling the cover plate 64275.

[0047] The basic principle and main features of the application are shown and described, the advantages of the application are shown and described, the standard parts used in the application can be purchased in the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional screwing, riveting, welding and other conventional means in the prior art, the mechanical parts and equipment adopt the conventional type in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and details are not described herein.

[0048] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and, while certain modifications are discussed, it is desired to be protected in accordance with the spirit and scope of the application. Therefore, the application is not limited to the specific embodiments shown and described, but only by the scope of the appended claims, unless otherwise specified.

Claims

1. An anti-interference communication intercom, comprising an intercom body (1), a display screen (2) is embedded on the top side of the front of the intercom body (1), an antenna (3), an indicator light (4) and an adjusting knob (5) are arranged on the top of the intercom body (1) from left to right, an anti-interference device is connected to the antenna (3), and the anti-interference device is arranged inside the intercom body (1); characterized in that Further comprising a conversation window mechanism (6) arranged in front of the microphone and the loudspeaker inside the intercom body (1) to play a protective role, the conversation window mechanism (6) comprises a positioning block (61) fixed to the front side inside the intercom body (1), a rectangular supporting sheet (62) integrally formed on the bottom front side of the positioning block (61), a through opening (63) opened on the middle lower side inside the rectangular supporting sheet (62), and a displacement protection structure (64) arranged on the rear side of the rectangular supporting sheet (62) to prevent dust from entering and isolate and absorb part of noise; The displacement protection structure (64) comprises a driving assembly (641) fixed to the middle rear side of the rectangular supporting sheet (62), a filtering assembly (642) connected to the front side of the driving assembly (641), a supporting frame (643) supporting sliding on the left and right sides of the filtering assembly (642), and supporting legs (644) arranged on the outer side of the supporting frame (643), the front side of the supporting legs (644) is fastened with the rectangular supporting sheet (62); when the filtering assembly (642) is located at the bottom side, the front end thereof is in contact with the through opening (63); The driving assembly (641) comprises a first supporting rod (6411) fixed to one side of the rectangular supporting sheet (62), a servo motor (6412) fastened to the right side of the first supporting rod (6411), a rotating shaft rod (6413) connected to the left side output end of the servo motor (6412), a second supporting rod (6414) supporting rotating on the other end of the rotating shaft rod (6413), a gear (6415) fixed to the middle of the outer surface of the rotating shaft rod (6413), and a rack (6416) engaged with the front side of the gear (6415), the right side of the rotating shaft rod (6413) penetrates and rotates inside the first supporting rod (6411), the front side of the second supporting rod (6414) is fixed with the rectangular supporting sheet (62), and the front end of the rack (6416) is connected with the filtering assembly (642).

2. The anti-jamming communication intercom of claim 1, wherein: The supporting frame (643) is provided with two, and the two supporting frames (643) are connected to the left and right sides of the driving assembly (641), respectively, and the supporting legs (644) are provided with six, and three are arranged on the two supporting frames (643), respectively.

3. The anti-jamming communication intercom of claim 1, wherein: The filter assembly (642) comprises a rod column (6421) connected with the driving assembly (641) at the rear side, the rod column (6421) is embedded in the middle side of the rear part of a rectangular frame seat (6422), the left and right sides of the rectangular frame seat (6422) are rotatably connected with rollers (6423), the upper right side of the inside of the rectangular frame seat (6422) is rotatably connected with a first push rod (6424), the other end of the first push rod (6424) penetrates the inside of a filter blocking part (6427) and is connected with a supporting plate (6425), the remaining three sides of the four ends of the inside of the rectangular frame seat (6422) are rotatably connected with the filter blocking part (6427) through second push rods (6426) respectively, and the front side of the supporting plate (6425) is fixed with the rectangular support piece (62).

4. The secure communication intercom of claim 3, wherein: The four rollers (6423) are arranged, and the four rollers (6423) are located at the four ends of the outer surface of the rectangular frame seat (6422) respectively, and the four rollers (6423) are slidably connected with the inside of two support frames (643) respectively.

5. The secure communication intercom of claim 3, wherein: The inside of the supporting plate (6425) is provided with a sliding groove (64251), and a positioning groove (64252) is arranged at the bottom side of the sliding groove (64251).

6. The secure communication intercom of claim 5, wherein: The outside of the first push rod (6424) is provided with a small pulley (64241), and the small pulley (64241) is inserted into the inside of the sliding groove (64251) and is slidably connected with the sliding groove (64251), and the small pulley (64241) is slidably connected with the inside of the positioning groove (64252) when the small pulley (64241) is located at the bottom side.

7. The secure communication intercom of claim 3, wherein: The filter blocking part (6427) comprises a frame (64271) connected with the first push rod (6424) and the second push rod (6426) respectively at the four ends, a cover (64272) fixedly connected with the middle side of the rear part of the frame (64271), a circular hole slot (64273) arranged in the middle side of the front part of the cover (64272), an acoustic cotton layer (64274) filled in the inside of the cover (64272), a cover piece (64275) fastened to the four ends of the rear part of the cover (64272), and a circular through hole (64276) arranged in the inside of the cover piece (64275).

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