CN210274389U - Phase-reversal vertical sound box - Google Patents
Phase-reversal vertical sound box Download PDFInfo
- Publication number
- CN210274389U CN210274389U CN201921375886.2U CN201921375886U CN210274389U CN 210274389 U CN210274389 U CN 210274389U CN 201921375886 U CN201921375886 U CN 201921375886U CN 210274389 U CN210274389 U CN 210274389U
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- sound box
- phase
- tube
- hole
- loudspeaker
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- 230000017525 heat dissipation Effects 0.000 claims description 15
- 238000005452 bending Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 15
- 238000009434 installation Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a phase inversion vertical sound box, which comprises a sound box shell, wherein a sound box baffle is vertically arranged in the sound box shell, the inner part of the sound box shell is divided into a first cavity and a second cavity through the sound box baffle, a main control PCB (printed circuit board) and a power module of the phase inversion vertical sound box are arranged in the first cavity, and a loudspeaker and a phase inversion tube assembly are arranged in the second cavity, so that the sound production effect of the loudspeaker is not interfered by the main control PCB; in addition, the phase inverter tube assembly comprises a first phase inverter tube and a second phase inverter tube, and the first phase inverter tube and the second phase inverter tube can completely radiate the sound in the sound box shell to the outside, so that the sound quality of the sound box and the using effect of a user are improved.
Description
Technical Field
The utility model relates to a technical field is made to speaker, stereo set, particularly, relates to a vertical audio amplifier of phase reversal.
Background
The phase inversion type sound box is also called phase inversion type perforated box or low frequency radial sound box, it is a kind of sound box with phase inversion hole (slot) on the panel of sound box, because of the phase inversion hole (slot), the sound in the box can be radiated to outside. The phase inversion type sound box is the most common box design in the current multimedia sound box, and is different from a closed type sound box in that the front surface of the sound box is provided with a cylindrical phase inversion hole to enable air inside and outside the box to circulate, and the sound box has higher power bearing capacity and lower distortion compared with the closed type sound box, is sufficient in volume and high in sensitivity, and is suitable for common families and also can be used in halls or professional places.
In a traditional phase inversion type loudspeaker box, only one cavity is generally arranged, and in the using process, a loudspeaker is generally subjected to electromagnetic interference of other circuit structures of the loudspeaker box, so that the sound production effect of the loudspeaker is influenced; in addition, in the conventional phase inversion type sound box, only one phase inversion tube is usually arranged, so that sound in the sound box cannot be completely radiated to the outside, a part of sound wave energy of the sound box is wasted, and the whole sound quality of the sound box is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, and provides an inverted vertical sound box which separates a circuit structure from a loudspeaker and an inverted tube component, so that the sound production effect of the loudspeaker is not interfered by the circuit structure, and the sound production effect of the loudspeaker is ensured; in addition, two phase reversal pipes are arranged in the phase reversal vertical sound box, so that sound in the sound box can be completely radiated to the outside, and the sound quality of the sound box is improved.
Correspondingly, the embodiment of the utility model provides a phase inversion vertical sound box, phase inversion vertical sound box includes the audio amplifier casing, vertically be provided with the audio amplifier baffle in the audio amplifier casing, the audio amplifier baffle divides the interior part of audio amplifier casing into first cavity and second cavity;
a main control PCB and a power supply module are arranged in the first chamber;
a loudspeaker and an inverter tube assembly are arranged in the second chamber, the loudspeaker is fixed on the sound box shell, and the inverter tube assembly comprises a first bent inverter tube and a second bent inverter tube; one end of the first bending phase-reversing tube is provided with a first bell mouth-shaped connecting tube part which is fixed on the sound box shell and communicated with the outside, and the other end of the first bending phase-reversing tube part is opened towards the inside of the second cavity; one end of the second bending phase-reversing tube is provided with a second bell-mouth-shaped connecting tube part which is fixed on the sound box shell and communicated with the outside, and the opening of the other end of the second bending phase-reversing tube part faces to the inside of the second cavity.
In an alternative embodiment, the sound box housing includes a front sound box cover plate and a rear sound box housing, and the front sound box cover plate is fixed in front of the rear sound box housing based on the first connecting member.
In an optional implementation mode, a front cover plate through hole is formed in the front cover plate of the sound box, and a heat dissipation plate is arranged in the front cover plate through hole;
the main control PCB board is fixed on the heat dissipation plate.
In an alternative embodiment, the heat dissipation plate is made of an aluminum alloy.
In an optional implementation manner, the power module is a battery, a battery holder adapted to the battery is disposed in the front cover plate of the sound box, and the battery is fixed in the battery holder.
In an optional implementation mode, a sound box control component and a sound box communication component are arranged on the sound box front cover plate;
the sound box control assembly comprises a plurality of sound box operation control buttons, a volume knob and a sound box switch control button, the main control PCB board is respectively connected with the sound box operation control buttons and the volume knob, and the sound box switch control button is electrically connected with the battery.
The loudspeaker box communication assembly comprises a microphone interface, a power charging interface, a USB interface and an SD card seat, the main control PCB is respectively electrically connected with the microphone interface, the USB interface and the SD card seat, and the power charging interface is electrically connected with the battery.
In an optional embodiment, the speaker back case includes a back case back panel;
a first rear panel mounting through hole is formed in the rear panel of the rear shell, and the loudspeaker is fixed in the first rear panel mounting through hole based on a second connecting piece;
the rear shell is characterized in that a second rear panel mounting through hole and a third rear panel mounting through hole are formed in the rear panel, the first horn mouth type connecting pipe part is embedded in the second rear panel mounting through hole, and the second horn mouth type connecting pipe part is embedded in the third rear panel mounting through hole.
In an optional embodiment, a first inverter tube mounting sleeve is arranged in the middle of the first curved inverter tube, a first inverter tube mounting bar is arranged on one side of the baffle plate of the sound box, which faces the second chamber, and the first curved inverter tube is fixed in the second chamber based on the matching of the first inverter tube mounting sleeve and the first inverter tube mounting bar;
the middle part of the second bending phase-reversing tube is provided with a second phase-reversing tube mounting sleeve, the loudspeaker box baffle plate faces to one side of the second cavity and is provided with a second phase-reversing tube mounting bar, and the second bending phase-reversing tube is fixed in the second cavity based on the cooperation of the second phase-reversing tube mounting sleeve and the second phase-reversing tube mounting bar.
In an optional embodiment, the vertical sound box further comprises a handle;
the top of the sound box rear shell is provided with a handle seat, and two ends of the handle are hinged to the handle seat.
In an optional embodiment, the front cover plate and the rear casing of the sound box are made of a BMC composite material.
The utility model provides a phase inversion vertical sound box, the vertical sound box divides the interior of the sound box into a first cavity and a second cavity through a sound box clapboard, a main control PCB board and a power supply module of the phase inversion vertical sound box are arranged in the first cavity, a loudspeaker and a phase inversion tube component are arranged in the second cavity, the main control PCB board of the phase inversion vertical sound box is separated from the loudspeaker and the phase inversion tube component, so that the sound production effect of the loudspeaker is not interfered by the main control PCB board; in addition, the phase inverter tube assembly comprises a first phase inverter tube and a second phase inverter tube, and the first phase inverter tube and the second phase inverter tube can completely radiate the sound in the sound box shell to the outside, so that the sound quality of the sound box and the using effect of a user are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic three-dimensional structure diagram of the front surface of the inverted vertical sound box in the embodiment of the present invention;
fig. 2 is a schematic three-dimensional structure diagram of the back surface of the inverted vertical sound box in the embodiment of the present invention;
fig. 3 is a side view of the inverted vertical speaker according to the embodiment of the present invention;
fig. 4 is a schematic three-dimensional structure diagram of the front side of the front cover plate of the sound box in the embodiment of the present invention;
fig. 5 is a schematic three-dimensional structure diagram of the rear side of the front cover plate of the sound box in the embodiment of the present invention;
FIG. 6 is a schematic diagram of a three-dimensional structure of a curved inverter tube according to an embodiment of the present invention;
fig. 7 is a schematic three-dimensional structure diagram of the baffle plate of the sound box in the embodiment of the present invention;
fig. 8 is a schematic structural diagram of the speaker control component and the speaker communication component in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is a schematic three-dimensional structure diagram of the front surface of the inverted vertical sound box in the embodiment of the present invention, fig. 2 is a schematic three-dimensional structure diagram of the back surface of the inverted vertical sound box in the embodiment of the present invention, and fig. 3 is a side view of the inverted vertical sound box in the embodiment of the present invention.
The embodiment of the utility model provides a vertical audio amplifier of phase reversal, vertical audio amplifier of phase reversal includes the audio amplifier casing.
Specifically, the sound box shell comprises a front sound box cover plate 1 and a rear sound box shell 2, wherein the front sound box cover plate 1 is fixed in front of the rear sound box shell 2 based on bolts. The sound box shell consists of a sound box front cover plate 1 and a sound box rear shell 2, so that on one hand, the integral assembly of the vertical sound box is facilitated; on the other hand, made things convenient for the maintenance of vertical audio amplifier, promptly when vertical audio amplifier breaks down, unpack apart audio amplifier front shroud 1 can be right vertical audio amplifier overhauls.
The loudspeaker box comprises a loudspeaker box shell, and is characterized in that a loudspeaker box partition plate 3 is vertically arranged inside the loudspeaker box shell, and the loudspeaker box partition plate 3 divides the interior of the loudspeaker box shell into a first cavity 4 and a second cavity 5.
A main control PCB and a power module are arranged in the first chamber 4, the main control PCB is used for controlling the operation of the phase inversion vertical sound box, and the power module supplies power for power utilization components of the phase inversion vertical sound box.
Fig. 4 is the three-dimensional structure schematic diagram of the embodiment of the present invention at the front side of the front cover plate of the sound box, and fig. 5 is the three-dimensional structure schematic diagram at the rear side of the front cover plate of the embodiment of the present invention.
Specifically, a front cover plate through hole 11 of a straight notch shape is formed in the front cover plate 1 of the sound box, a heat dissipation plate 12 is arranged in the front cover plate through hole 11, and the master control PCB is fixed on the heat dissipation plate 12.
In the embodiment of the present invention, a plurality of limiting members 121 are disposed on the inner wall of the front cover plate 1 of the sound box, and the heat dissipation plate 12 is based on the plurality of limiting members 121 being fixed on the inner wall of the front cover plate 1 of the sound box.
In addition, the shape of the heat dissipation plate 12 can be processed into a straight notch shape matched with the front cover plate through hole 11, and the heat dissipation plate 12 only needs to be embedded into the front cover plate through hole 11 during assembly, so that the assembly process of the heat dissipation plate 12 and the integral structure of the front cover plate 1 of the sound box are simplified.
Particularly, the heat dissipation plate 12 is made of aluminum alloy, and the aluminum alloy has the advantage of good heat dissipation effect; the main control PCB is fixed in the heat dissipation plate 12 made of the aluminum alloy, and can dissipate heat when in operation, so that the situation that the main control PCB is overheated can be avoided, and the normal operation of the main control PCB is ensured.
Specifically, the power module is fixed on the inner wall of the front cover plate 1 of the sound box.
In the embodiment of the present invention, the power module is a battery 13, a battery seat 14 adapted to the battery 13 is provided in the front cover plate of the sound box, based on the battery seat 14 will the battery 13 is fixed on the inner wall of the front cover plate 1 of the sound box.
The battery 13 may be a dry battery, a lead storage battery, a lithium battery, or the like, and the type of the battery 13 is not particularly limited.
A horn 51 and an inverter tube assembly including a first curved inverter tube 52 and a second curved inverter tube 53 are disposed in the second chamber 5.
Specifically, the sound box back case 2 includes a back case back panel 21, a circular first back panel mounting through hole is provided on the back case back panel 21, and the speaker 51 is fixed in the first back panel mounting through hole based on a bolt. In addition, the speaker 51 is electrically connected to the main control PCB, and the speaker 51 is controlled by the main control PCB; the speaker 51 is electrically connected to a battery 13, and the battery 13 supplies power for the operation of the speaker 51.
Specifically, be provided with the same second rear panel installation through-hole in aperture and third rear panel installation through-hole on the backshell rear panel 21, just second rear panel installation through-hole sets up the top of first rear panel installation through-hole, third rear panel installation through-hole sets up the below of first rear panel installation through-hole, the centre of a circle collineation of first rear panel installation through-hole, second rear panel installation through-hole and third rear panel installation through-hole three.
Fig. 6 is a schematic three-dimensional structure diagram of a bent phase-inverted tube in an embodiment of the present invention, and fig. 7 is a schematic three-dimensional structure diagram of a baffle plate of a sound box in an embodiment of the present invention.
The first curved inverter tube 52 and the second curved inverter tube 53 have the same structure, and therefore, only one schematic structural diagram of fig. 6 is shown.
One end of the first curved phase-reversing tube 52 is provided with a first bell-mouth-shaped connecting tube portion 521, and the first bell-mouth-shaped connecting tube portion 521 is embedded in the second rear panel mounting through hole; the other end of the first curved inverter tube 52 opens into the second chamber 5; in addition, a first inverter tube mounting sleeve 522 is arranged in the middle of the first curved inverter tube 52, a first inverter tube mounting bar 31 is arranged on one side of the loudspeaker box partition 3 facing the second chamber 5, a first inverter tube mounting through hole matched with the first inverter tube mounting sleeve 522 is arranged on the first inverter tube mounting bar 31, and the first curved inverter tube 52 can be fixed in the second chamber 5 through bolts based on the matching of the first inverter tube mounting sleeve 522 and the first inverter tube mounting through hole.
Similarly, one end of the second curved phase-reversing tube 53 is provided with a second bell-mouth-shaped connecting tube portion 531, and the second bell-mouth-shaped connecting tube portion 531 is embedded in the third rear panel mounting through hole; the other end of the second curved inverter tube 53 opens into the second chamber 5; in addition, a first inverter tube mounting sleeve 532 is arranged in the middle of the second curved inverter tube 53, a second inverter tube mounting bar 32 is arranged on one side, facing the second chamber 5, of the loudspeaker box partition 3, a second inverter tube mounting through hole matched with the second inverter tube mounting sleeve 532 is arranged on the second inverter tube mounting bar 32, and the second curved inverter tube 53 can be fixed in the second chamber 5 through bolts based on the matching of the first inverter tube mounting sleeve 532 and the first inverter tube mounting through hole.
The first inverter tube 52 and the second inverter tube 53 are arranged to completely radiate the sound in the enclosure of the sound box to the outside, so that the waste of sound wave energy of the loudspeaker 51 is avoided, and the sound quality of the inverter vertical sound box is improved.
Fig. 8 is a schematic structural diagram of the speaker control component and the speaker communication component in the embodiment of the present invention.
In addition, the front cover plate 1 of the sound box is also provided with a sound box control component and a sound box communication component.
Specifically, the speaker control component is disposed on the outer wall of the front cover plate 1 of the speaker, and includes a plurality of speaker operation control buttons 151, a volume knob 152, and a speaker switch control button 153.
The plurality of speaker operation control buttons 151 are respectively disposed on two sides of the front cover plate through hole 11, the plurality of speaker operation control buttons 151 are electrically connected to the main control PCB, and the phase inversion vertical speaker can be controlled to play through the plurality of speaker operation control buttons 151.
The volume knob 152 is disposed on the outer wall of the heat dissipation plate 12, the volume knob 152 is electrically connected to the main control PCB, and the volume of the inverted upright speaker can be controlled by the volume knob 152.
The sound box switch control button 153 is disposed on the top of the front cover plate 1 of the sound box, the sound box switch control button 153 is electrically connected to the battery 13, and the opening and closing of the phase inversion vertical sound box can be controlled by the sound box switch control button 153.
Specifically, the sound box communication component is arranged on the top of the front cover plate 1 of the sound box, and includes a microphone interface 161, a power charging interface 162, a USB interface 163, and an SD card socket 164.
One end of the microphone interface 161 is electrically connected to the main control PCB, and the other end of the microphone interface 161 is electrically connected to the microphone, and the vertical speaker is electrically connected to the microphone based on the microphone interface 161, so that the sound input to the microphone is played through the phase inversion vertical speaker.
One end of the power charging interface 162 is electrically connected to the battery 13, and the other end of the power charging interface can be connected to an external power source through a power line, so as to charge the battery 13 when the electric quantity of the battery 13 is exhausted.
One end of the USB interface 163 is electrically connected to the main control PCB board, and the other end of the USB interface can be connected to another upper computer through a USB cable, so as to control or communicate with the inverted vertical speaker through the other upper computer.
The SD card seat 164 is electrically connected to the main control PCB board, and the SD card seat 164 can read audio information in the SD card, so that the phase inversion vertical speaker can be controlled to play the audio information in the SD card.
In addition, the inverted vertical sound box further comprises a handle 7, specifically, a handle seat 24 is arranged at the top of the sound box rear shell 2, and two ends of the handle 7 are hinged to the handle seat 24; the arrangement of the handle 7 facilitates the carrying of the phase reversal vertical sound box.
In addition, the front cover plate 1 and the rear shell 2 of the sound box are made of BMC composite materials; it should be noted that the BMC composite material sound box casing is a novel sound box casing replacing a wooden sound box, the BMC composite material sound box casing is far higher than a wooden material in specific gravity, density and rigidity, the acoustic effect is also obviously better than that of the wooden sound box, and the BMC composite material can be hot-formed at one time, so that the production efficiency of the front cover plate 1 and the rear cover plate 2 of the sound box is improved to a certain extent.
The utility model provides a vertical sound box with phase inversion, the vertical sound box divides the interior of the sound box into a first cavity 4 and a second cavity 5 through a sound box clapboard 3, a main control PCB board and a power module of the vertical sound box with phase inversion are arranged in the first cavity 4, a loudspeaker 51 and a phase inversion tube component are arranged in the second cavity 5, the main control PCB board of the vertical sound box with phase inversion is separated from the loudspeaker 51 and the phase inversion tube component, so that the sound production effect of the loudspeaker is not interfered by the main control PCB board; in addition, the inverter tube assembly comprises a first inverter tube 52 and a second inverter tube 53, and the first inverter tube 52 and the second inverter tube 53 can completely radiate the sound in the sound box shell to the outside, so that the sound quality of the sound box and the use effect of a user are improved.
In addition, the above detailed description is made on the phase inversion vertical sound box provided by the embodiment of the present invention, and a specific example should be adopted herein to explain the principle and the implementation manner of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (10)
1. A phase inversion vertical sound box is characterized by comprising a sound box shell, wherein a sound box partition plate is vertically arranged in the sound box shell, and divides the interior of the sound box shell into a first cavity and a second cavity;
a main control PCB and a power supply module are arranged in the first chamber;
a loudspeaker and an inverter tube assembly are arranged in the second chamber, the loudspeaker is fixed on the sound box shell, and the inverter tube assembly comprises a first bent inverter tube and a second bent inverter tube; one end of the first bending phase-reversing tube is provided with a first bell mouth-shaped connecting tube part which is fixed on the sound box shell and communicated with the outside, and the other end of the first bending phase-reversing tube part is opened towards the inside of the second cavity; one end of the second bending phase-reversing tube is provided with a second bell-mouth-shaped connecting tube part which is fixed on the sound box shell and communicated with the outside, and the opening of the other end of the second bending phase-reversing tube part faces to the inside of the second cavity.
2. The upright speaker of claim 1, wherein the speaker enclosure comprises a front speaker cover and a back speaker enclosure, the front speaker cover being secured in front of the back speaker enclosure based on a first connector.
3. The vertical sound box according to claim 2, wherein a front cover plate through hole is formed in the front cover plate of the sound box, and a heat dissipation plate is arranged in the front cover plate through hole;
the main control PCB board is fixed on the heat dissipation plate.
4. The vertical sound box according to claim 3, wherein the heat dissipating plate is made of aluminum alloy.
5. The upright sound box according to claim 2, wherein the power module is a battery, a battery holder adapted to the battery is disposed in the front cover plate of the sound box, and the battery is fixed in the battery holder.
6. The vertical sound box according to claim 5, wherein a sound box control component and a sound box communication component are arranged on the front sound box cover plate;
the sound box control assembly comprises a plurality of sound box operation control buttons, a volume knob and a sound box switch control button, the main control PCB is respectively and electrically connected with the plurality of sound box operation control buttons and the volume knob, and the sound box switch control button is electrically connected with the battery;
the loudspeaker box communication assembly comprises a microphone interface, a power charging interface, a USB interface and an SD card seat, the main control PCB is respectively electrically connected with the microphone interface, the USB interface and the SD card seat, and the power charging interface is electrically connected with the battery.
7. The upright sound box of claim 2, wherein the sound box back housing comprises a back housing back panel;
a first rear panel mounting through hole is formed in the rear panel of the rear shell, and the loudspeaker is fixed in the first rear panel mounting through hole based on a second connecting piece;
the rear shell is characterized in that a second rear panel mounting through hole and a third rear panel mounting through hole are formed in the rear panel, the first horn mouth type connecting pipe part is embedded in the second rear panel mounting through hole, and the second horn mouth type connecting pipe part is embedded in the third rear panel mounting through hole.
8. The vertical loudspeaker in accordance with claim 1, wherein a first inverter tube mounting sleeve is provided in the middle of the first curved inverter tube, a first inverter tube mounting bar is provided on a side of the baffle plate facing the second chamber, and the first curved inverter tube is fixed in the second chamber based on the cooperation of the first inverter tube mounting sleeve and the first inverter tube mounting bar;
the middle part of the second bending phase-reversing tube is provided with a second phase-reversing tube mounting sleeve, the loudspeaker box baffle plate faces to one side of the second cavity and is provided with a second phase-reversing tube mounting bar, and the second bending phase-reversing tube is fixed in the second cavity based on the cooperation of the second phase-reversing tube mounting sleeve and the second phase-reversing tube mounting bar.
9. The upright sound box of claim 2, further comprising a handle;
the top of the sound box rear shell is provided with a handle seat, and two ends of the handle are hinged to the handle seat.
10. The upright sound box according to claim 2, wherein the front cover plate and the rear cover are made of BMC composite material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921335389X | 2019-08-17 | ||
| CN201921335389 | 2019-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210274389U true CN210274389U (en) | 2020-04-07 |
Family
ID=70018069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921375886.2U Expired - Fee Related CN210274389U (en) | 2019-08-17 | 2019-08-22 | Phase-reversal vertical sound box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210274389U (en) |
-
2019
- 2019-08-22 CN CN201921375886.2U patent/CN210274389U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200407 Termination date: 20200822 |
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| CF01 | Termination of patent right due to non-payment of annual fee |