CN212677150U

CN212677150U - Radio communication equipment

Info

Publication number: CN212677150U
Application number: CN202021184099.2U
Authority: CN
Inventors: 樊同亮; 许朝阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-03-09
Anticipated expiration: 2030-06-23

Abstract

The utility model discloses a radio communication equipment aims at overcoming among the prior art radio communication equipment, and the transaudient hole blocks up solid particle debris easily, causes the microphone to adopt the sound unclear, and speaker sound weakens, seriously influences the weak point of communication result of use, provides and can shield the transaudient hole when not using, realizes better dustproof effect, and the transaudient hole that can conveniently open when using guarantees normal use. The structure of the device comprises a shell, a control circuit and an antenna, wherein the control circuit is arranged in the shell, the shell is provided with a first sinking platform, an outer cover plate is covered on the first sinking platform, an inner cover plate which is rotatably connected with the shell is arranged on the inner side of the outer cover plate, a dust screen is arranged on the inner side of the inner cover plate, the outer cover plate is provided with a plurality of first sound transmission holes, the inner cover plate is provided with second sound transmission holes, and the shell is provided with a rotary stirring mechanism for stirring the inner cover plate to rotate; microphone and speaker set up in the first heavy platform, the dustproof screen panel is located the microphone and the speaker outside.

Description

Radio communication equipment

Technical Field

The utility model relates to a communication equipment technical field especially relates to a radio voice communication equipment of hand-held type.

Background

The radio communication technology is a technology for transmitting information in space by using radio electromagnetic waves. A wireless intercom is a common wireless communication device, and can realize wireless voice communication by using circuit elements such as a microphone and a speaker. In order to ensure the quality of sound recording and playing, the shell of the equipment is arranged at the installation positions of the microphone and the loudspeaker, and a plurality of sound transmission holes are arranged in the shell to facilitate sound transmission.

In practical use, dust and other solid particle sundries are easy to accumulate at the sound transmission hole, so that the microphone cannot pick sound clearly, the sound of the loudspeaker is weakened, and the communication use effect is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome radio communication equipment such as wireless intercom among the prior art, the transaudient hole blocks up solid particle debris easily, causes the microphone to adopt the sound unclear, and speaker sound weakens, seriously influences the weak point of communication result of use, provides and can shield the transaudient hole when not using, realizes better dustproof effect, the transaudient hole that can conveniently open when using guarantees a radio communication equipment of normal use.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model discloses a radio communication device, including shell, control circuit and antenna, control circuit sets up in the shell, the shell is equipped with the first heavy platform, the first heavy platform upper shield is equipped with the outer cover plate, is equipped with the inner cover plate of rotatable connection shell in the outer cover plate inboard, is equipped with the dust screen in the inner cover plate inboard, the outer cover plate is equipped with a plurality of first phonate holes, and the inner cover plate is equipped with the second phonate hole, the shell is equipped with the rotatory striking gear of striking plate rotation of inner cover; the control circuit comprises a microphone and a loudspeaker, the microphone and the loudspeaker are arranged in the first sinking platform, and the dustproof mesh cover is arranged on the outer side of the microphone and the outer side of the loudspeaker.

The inner cover plate can rotate relative to the outer cover plate, and the inner cover plate can be stirred through the rotating stirring mechanism, so that the rotating angle of the inner cover plate is controlled. The portion of the surface of the inner shroud between the adjacent second sound-transmitting holes may be made to shield the first sound-transmitting holes from the inside. Therefore, when the equipment is placed for a long time and is not used or in an environment with more dust, the solid particles can be effectively prevented from accumulating to block the whole sound transmission hole structure or entering the shell to influence the work of the microphone and the loudspeaker. When sound is required to be input or the sound of the loudspeaker is acquired, the first sound transmission hole and the second sound transmission hole can be communicated by controlling the rotating angle of the inner cover plate, so that the microphone can normally acquire the sound and the sound of the loudspeaker is not blocked. The dust screen is inside the inner cover plate to further prevent fine particles from entering the housing.

Preferably, the first sinking platform is circular, the outer cover plate and the inner cover plate are both disc-shaped, the first sound transmission holes are arranged in an annular array around the center of the outer cover plate, the second sound transmission holes are arranged in an annular array around the center of the inner cover plate, and the part between the adjacent second sound transmission holes forms a shielding part for shielding the first sound transmission holes.

Preferably, a rotating shaft is arranged at the center of the inner side of the outer cover plate, the middle part of the inner cover plate is rotatably connected with the rotating shaft, and a reset torsion spring is arranged between the inner cover plate and the rotating shaft.

The reset torsion spring makes the rotation angle of the inner cover plate elastically reset, and when the user does not stir the inner cover plate, the reset torsion spring makes the inner cover plate maintain the state of shielding the first sound transmission hole of the outer cover plate.

Preferably, a driving tooth is arranged along the edge of the inner cover plate, a second sinking platform is arranged on one side of the first sinking platform, one side of the second sinking platform is communicated with the first sinking platform, the rotary toggle mechanism comprises an intermediate gear which is rotatably fixed in the second sinking platform, a toggle gear which is rotatably fixed in the second sinking platform and a slide bar, the intermediate gear is arranged between the inner cover plate and the toggle gear, the intermediate gear is simultaneously meshed with the toggle gear and the driving teeth at the edge of the inner cover plate, the second sinking platform is provided with a sliding chute at one side surface close to the shell, the sliding chute is close to the shifting gear, the sliding chute extends to the side surface of the shell and is provided with an opening, the sliding rod is inserted into the sliding groove from the opening and is in sliding connection with the sliding groove, a rack meshed with the toggle gear is arranged at the inner end of the rack of the sliding rod, the outer end of the sliding rod penetrates through the opening and is exposed out of the side face of the shell, and a reset spring is arranged between the bottom of the sliding groove and the tail end of the sliding rod.

The user makes the poking gear rotate by pressing the sliding rod, and further drives the inner cover plate to rotate through the intermediate gear. The maximum sliding distance of the sliding rod pressed each time is fixed, and the angle of driving the inner cover plate to rotate each time is also fixed, so that the inner cover plate can shield the first sound transmission hole, or the first sound transmission hole and the second sound transmission hole are communicated to switch between two states.

Preferably, a sealing element for accommodating the sliding rod to penetrate through is arranged at the opening, and an included angle between the sliding rod and the side face of the shell is 45-60 degrees.

The length of the sliding rod protruding out of the shell in the vertical direction is shortened, the occupied size of the sliding rod is reduced, and a user can hold the equipment conveniently.

Preferably, a convex limiting step is arranged around the inner side of the first sinking platform, a limiting groove is arranged around the top surface of the limiting step, the dustproof net is arranged in a circular ring frame, an inserting protrusion is arranged on one side, facing the first sinking platform, of the ring frame, the inserting protrusion is inserted into the limiting groove, an elastic sealing ring is sleeved on the inner side of the ring frame of the limiting step, and the ring frame abuts against the elastic sealing ring; encircle the ring frame and be equipped with the unsmooth vibration bulge loop of top surface interval towards inner cover plate one side, inner cover plate is equipped with towards dust screen a side and supports the vibration kicking block that leans on the vibration bulge loop.

The limiting step is used for installing a ring frame and an elastic sealing ring of the dustproof net outer ring. The elastic sealing ring is used for strengthening the dustproof effect on the edge of the sealing ring frame. The elastic sealing ring is an elastic compressible structure, so that the dust screen can be pushed inwards for a certain distance and rebounded. The inner cover plate is at the rotation in-process the top surface that the vibration kicking block top leaned on and slided the vibration bulge loop is owing to the unsmooth structure in vibration bulge loop top surface interval for make the dust screen can be inwards promoted certain distance and elasticity sealing washer resilience, and then produce the vibration. Thus, when the inner cover plate is rotated, the dust screen is vibrated, so that the dust attached to the dust screen is shaken off to prevent the dust screen from being blocked.

Preferably, the control circuit comprises a micro control unit, a key circuit, a microphone signal amplification circuit, a radio frequency transmitting and receiving circuit, an audio power amplification circuit, a loudspeaker and a power circuit, the micro control unit is connected with the key circuit, the radio frequency transmitting and receiving circuit and the power circuit, the radio frequency transmitting and receiving circuit is further connected with an antenna, the microphone signal amplification circuit and the audio power amplification circuit, the microphone is connected with the microphone signal amplification circuit, and the loudspeaker is connected with the audio power amplification circuit.

Preferably, the radio frequency transmitting and receiving circuit comprises a radio frequency module, a received signal amplifying circuit, a transmitting power amplifying circuit and a low-pass filter, the received signal amplifying circuit is connected with the radio frequency module and the low-pass filter, the transmitting power amplifying circuit is connected with the radio frequency module and the low-pass filter, the low-pass filter is connected with an antenna, and the radio frequency module is further connected with an audio power amplifier circuit and a microphone signal amplifying circuit.

Therefore, the utility model discloses following beneficial effect has: (1) the sound transmission hole can be shielded when not in use, a better dustproof effect is realized, the sound transmission hole can be conveniently opened when in use, and the normal use is ensured; (2) when the equipment is not used after being placed for a long time or in an environment with much dust, the solid particles can be effectively prevented from accumulating to block the whole sound transmission hole structure or entering the shell to influence the work of the microphone and the loudspeaker; (3) thus, when the inner cover plate is rotated, the dust screen is vibrated, so that the dust attached to the dust screen is shaken off to prevent the dust screen from being blocked.

Drawings

Fig. 1 is a side view, cross-sectional structural diagram of a radio communication device according to the present invention.

Fig. 2 is a front sectional structural view of a radio communication device according to the present invention.

Fig. 3 is a partially enlarged schematic view of a radio communication device according to the present invention.

Fig. 4 is a schematic circuit diagram of a radio communication device according to the present invention.

The figure is marked with: 1. a housing; 2. an antenna; 3. a first sinking platform; 301. a limiting step; 302. a limiting groove; 4. an outer cover plate; 401. a first sound-transmitting hole; 402. a rotating shaft; 403. a return torsion spring; 5. an inner shroud; 501. a second sound-transmitting aperture; 502. a shielding portion; 503. a drive tooth; 6. a second sinking platform; 601. an intermediate gear; 602. shifting a gear; 603. a slide bar; 604. a rack; 605. a chute; 606. a return spring; 607. a seal member; 7. a dust screen; 701. a ring frame; 702. inserting and connecting the bulges; 703. vibrating the convex ring; 704. vibrating the top block; 8. an elastic sealing ring. 111. A micro control unit; 112. a key circuit; 113. a microphone; 114. a microphone signal amplifying circuit; 115. a radio frequency transmitting and receiving circuit; 116. an audio power amplifier circuit; 117. a speaker; 118. a power supply circuit; 119. a radio frequency module; 120. a received signal amplifying circuit; 121. a transmission power amplifying circuit; 122. a low pass filter.

Detailed Description

The invention is further described with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, fig. 2 and fig. 3, the radio communication device of the present invention comprises a housing 1, a control circuit and an antenna 2, wherein the control circuit is disposed in the housing 1, the housing 1 is provided with a first sinking platform 3, the first sinking platform 3 is covered with an outer cover plate 4, an inner cover plate 5 rotatably connected to the housing 1 is disposed inside the outer cover plate 4, a dust screen 7 is disposed inside the inner cover plate 5, the outer cover plate 4 is provided with a plurality of first sound holes 401, the inner cover plate 5 is provided with a second sound hole 501, and the housing 1 is provided with a rotary toggle mechanism for toggling the inner cover plate 5 to rotate; the control circuit comprises a microphone 113 and a loudspeaker 117, the microphone 113 and the loudspeaker 117 are arranged in the first sinking platform 3, and the dustproof net 7 is covered outside the microphone 113 and the loudspeaker 117.

The inner cover plate 5 can rotate relative to the outer cover plate 4, and the inner cover plate 5 can be stirred through a rotating stirring mechanism, so that the rotating angle of the inner cover plate 5 is controlled. The portion of the surface of the inner shroud 5 between the adjacent second sound transmitting holes 501 may be made to shield the first sound transmitting holes 401 from the inside. Therefore, when the equipment is not used after being placed for a long time or in an environment with much dust, the solid particles can be effectively prevented from accumulating to block the whole sound transmission hole structure or entering the shell 1 to influence the work of the microphone 113 and the loudspeaker 117. When the sound needs to be input or the sound of the speaker 117 needs to be acquired, the first sound transmission hole 401 and the second sound transmission hole 501 can be communicated by controlling the rotation angle of the inner cover plate 5, so that the microphone 113 can normally acquire the sound and the sound of the speaker 117 is not blocked. The dust screen 7 is inside the inner cover plate 5 to further prevent fine particles from entering the housing 1.

The first sinking platform 3 is circular, the outer cover plate 4 and the inner cover plate 5 are both disc-shaped, the first sound transmission holes 401 are arranged in an annular array around the center of the outer cover plate 4, the second sound transmission holes 501 are arranged in an annular array around the center of the inner cover plate 5, and the shielding part 502 for shielding the first sound transmission holes 401 is formed between the adjacent second sound transmission holes 501. The inner side center of the outer cover plate 4 is provided with a rotating shaft 402, the middle part of the inner cover plate 5 is rotatably connected with the rotating shaft 402, and a reset torsion spring 403 is arranged between the inner cover plate 5 and the rotating shaft 402.

The return torsion spring 403 elastically returns the rotation angle of the inner shroud 5, and when the user does not move the inner shroud 5, the return torsion spring 403 maintains the inner shroud 5 in a state of shielding the first sound hole 401 of the outer shroud 4.

A driving tooth 503 is arranged along the edge of the inner cover plate 5, a second sinking platform 6 is arranged on one side of the first sinking platform 3, one side of the second sinking platform 6 is communicated with the first sinking platform 3, the rotary shifting mechanism comprises an intermediate gear 601 which is rotatably fixed in the second sinking platform 6, a shifting gear 602 which is rotatably fixed in the second sinking platform 6 and a slide bar 603, the intermediate gear 601 is arranged between the inner cover plate 5 and the shifting gear 602, the intermediate gear 601 is simultaneously meshed with the driving tooth 503 on the edge of the shifting gear 602 and the inner cover plate 5, a slide groove 605 is arranged on one side of the second sinking platform 6 close to the shell 1, the slide groove 605 is close to the shifting gear 602, the slide groove 605 extends to the side of the shell 1 and is provided with an opening, the slide bar 603 is inserted into the slide groove 605 from the opening and is in sliding connection with the slide groove 605, a rack 604 which is meshed with the shifting gear 602 is arranged at the inner end of the slide bar, a return spring 606 is arranged between the bottom of the sliding chute 605 and the end of the sliding rod 603. And a sealing element 607 for accommodating the sliding rod 603 to pass through is arranged at the opening, and an included angle between the sliding rod 603 and the side face of the shell 1 is 45-60 degrees.

The user presses the sliding rod 603 to rotate the toggle gear 602, and further drives the inner cover plate 5 to rotate through the intermediate gear 601. The maximum sliding distance of the sliding rod 603 pressed each time is fixed, so that the angle of driving the inner cover plate 5 to rotate each time is also fixed, thereby realizing the switching of two states that the inner cover plate 5 shields the first sound transmission hole 401 or communicates the first sound transmission hole 401 and the second sound transmission hole 501. The length of the sliding rod 603 protruding out of the shell 1 in the vertical direction is shortened, the occupied volume of the sliding rod 603 is reduced, and a user can hold the equipment conveniently.

A convex limiting step 301 is arranged around the inner side of the first sinking platform 3, a limiting groove 302 is arranged around the top surface of the limiting step 301, the dustproof net 7 is arranged in a circular ring frame 701, an inserting protrusion 702 is arranged on one side, facing the first sinking platform 3, of the ring frame 701, the inserting protrusion 702 is inserted into the limiting groove 302, an elastic sealing ring 8 is sleeved on the inner side of the ring frame 701 of the limiting step 301, and the ring frame 701 abuts against the elastic sealing ring 8; a vibration convex ring 703 with concave-convex top surface intervals is arranged on one side of the ring frame 701 facing the inner cover plate 5, and a vibration top block 704 abutted against the vibration convex ring 703 is arranged on one side of the inner cover plate 5 facing the dustproof net 7.

The limiting step 301 is used for installing a ring frame 701 of the outer ring of the dust screen 7 and the elastic sealing ring 8. The elastic sealing ring 8 is used for enhancing the dustproof effect of the edge of the sealing ring frame 701. The resilient sealing ring 8 acts as a resiliently compressible structure enabling the dust screen 7 to be pushed a distance inwards and rebound. The inner shroud 5 is at the rotation in-process the vibration kicking block 704 top is leaned on and is slided the top surface of vibration bulge loop 703, because the structure of vibration bulge loop 703 top surface interval unsmooth for make dust screen 7 can be inwards promoted certain distance and elasticity sealing washer 8 kick-backs, and then produce the vibration. Thus, when the inner cover plate 5 is rotated, the dust screen 7 is vibrated, so that the dust attached to the dust screen is shaken off to prevent the dust screen 7 from being blocked.

As shown in fig. 4, the control circuit includes a micro control unit 111, a key circuit 112, a microphone 113, a microphone signal amplifying circuit 114, a radio frequency transmitting and receiving circuit 115, an audio power amplifier circuit 116, a speaker 117, and a power supply circuit 118, the micro control unit 111 is connected to the key circuit 112, the radio frequency transmitting and receiving circuit 115, and the power supply circuit 118, the radio frequency transmitting and receiving circuit 115 is further connected to the antenna 2, the microphone signal amplifying circuit 114, and the audio power amplifier circuit 116, the microphone 113 is connected to the microphone signal amplifying circuit 114, and the speaker 117 is connected to the audio power amplifier circuit 116.

The radio frequency transmitting and receiving circuit 115 comprises a radio frequency module 119, a received signal amplifying circuit 120, a transmitting power amplifying circuit 121 and a low-pass filter 122, the received signal amplifying circuit 120 is connected with the radio frequency module 119 and the low-pass filter 122, the transmitting power amplifying circuit 121 is connected with the radio frequency module 119 and the low-pass filter 122, the low-pass filter 122 is connected with the antenna 2, and the radio frequency module 119 is further connected with an audio power amplifier circuit 116 and a microphone signal amplifying circuit 114.

Claims

1. A radio communication device is characterized by comprising a shell, a control circuit and an antenna, wherein the control circuit is arranged in the shell, the shell is provided with a first sinking platform, the first sinking platform is covered with an outer cover plate, the inner side of the outer cover plate is provided with an inner cover plate which is rotatably connected with the shell, the inner side of the inner cover plate is provided with a dustproof net, the outer cover plate is provided with a plurality of first sound transmission holes, the inner cover plate is provided with second sound transmission holes, and the shell is provided with a rotary stirring mechanism for stirring the inner cover plate to rotate; the control circuit comprises a microphone and a loudspeaker, the microphone and the loudspeaker are arranged in the first sinking platform, and the dustproof mesh cover is arranged on the outer side of the microphone and the outer side of the loudspeaker.

2. A radio communication apparatus according to claim 1, wherein the first depressed stage has a circular shape, the outer cover plate and the inner cover plate have a circular disk shape, the first sound-transmitting holes are arranged in an annular array around the center of the outer cover plate, the second sound-transmitting holes are arranged in an annular array around the center of the inner cover plate, and portions between adjacent second sound-transmitting holes constitute shielding portions for shielding the first sound-transmitting holes.

3. The radio communication apparatus as claimed in claim 2, wherein a rotary shaft is provided at the center of the inner side of the outer cover plate, the middle portion of the inner cover plate is rotatably connected to the rotary shaft, and a return torsion spring is provided between the inner cover plate and the rotary shaft.

4. A radio communication apparatus according to claim 2 or 3, wherein a driving gear is provided along an edge of the inner cover plate, a second sinking platform is provided on one side of the first sinking platform, the first sinking platform is connected to one side of the second sinking platform, the rotary striking mechanism comprises an intermediate gear rotatably fixed in the second sinking platform, a striking gear rotatably fixed in the second sinking platform, and a slide bar, the intermediate gear is provided between the inner cover plate and the striking gear, the intermediate gear simultaneously engages with the driving gear on the edge of the striking gear and the inner cover plate, the second sinking platform is provided with a slide groove on a side surface close to the housing, the slide groove is close to the striking gear, the slide groove extends to a side surface of the housing and is provided with an opening, the slide bar is inserted into the slide groove from the opening and is slidably connected with the slide groove, an inner end of the slide bar rack is provided with a rack engaging with the striking gear, and an outer, a return spring is arranged between the bottom of the sliding groove and the tail end of the sliding rod.

5. A radio communication device according to claim 4, wherein the opening is provided with a seal for receiving a slide bar therethrough, the slide bar being angled with respect to the side of the housing by an angle of 45-60 degrees.

6. A radio communication device according to claim 4, wherein a protruding limiting step is provided around the inner side of the first sinking platform, a limiting groove is provided around the top surface of the limiting step, the dust screen is provided in a circular ring frame, an inserting protrusion is provided on the side of the ring frame facing the first sinking platform, the inserting protrusion is inserted into the limiting groove, an elastic sealing ring is sleeved on the inner side of the ring frame of the limiting step, and the ring frame abuts against the elastic sealing ring; encircle the ring frame and be equipped with the unsmooth vibration bulge loop of top surface interval towards inner cover plate one side, inner cover plate is equipped with towards dust screen a side and supports the vibration kicking block that leans on the vibration bulge loop.

7. The radio communication device according to claim 1, wherein the control circuit comprises a micro control unit, a key circuit, a microphone signal amplifying circuit, a radio frequency transmitting and receiving circuit, an audio power amplifying circuit, a speaker and a power circuit, the micro control unit is connected with the key circuit, the radio frequency transmitting and receiving circuit and the power circuit, the radio frequency transmitting and receiving circuit is further connected with an antenna, the microphone signal amplifying circuit and the audio power amplifying circuit, the microphone is connected with the microphone signal amplifying circuit, and the speaker is connected with the audio power amplifying circuit.

8. The radio communication device according to claim 7, wherein the radio frequency transmitting and receiving circuit comprises a radio frequency module, a received signal amplifying circuit, a transmitting power amplifying circuit and a low pass filter, the received signal amplifying circuit is connected with the radio frequency module and the low pass filter, the transmitting power amplifying circuit is connected with the radio frequency module and the low pass filter, the low pass filter is connected with an antenna, and the radio frequency module is further connected with an audio power amplifier circuit and a microphone signal amplifying circuit.