CN110836679B - SAW surface acoustic wave passive wireless sensor device - Google Patents
SAW surface acoustic wave passive wireless sensor device Download PDFInfo
- Publication number
- CN110836679B CN110836679B CN201911064269.5A CN201911064269A CN110836679B CN 110836679 B CN110836679 B CN 110836679B CN 201911064269 A CN201911064269 A CN 201911064269A CN 110836679 B CN110836679 B CN 110836679B
- Authority
- CN
- China
- Prior art keywords
- fixed
- fixing
- groove
- rod
- connecting rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/48—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using wave or particle radiation means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a SAW (surface acoustic wave) passive wireless sensor device which comprises a base, fixing holes, a fixing seat, an auxiliary mechanism and fixing grooves, wherein the fixing holes with equal intervals are formed in the base, the fixing seat is arranged at the top end of the base, the auxiliary mechanism is fixed on each of two sides of the fixing seat, the fixing grooves are formed in the fixing seat, an inductor is arranged in each fixing groove, limit holes with equal intervals are formed in each of two sides of each fixing groove above the inductor, a locking mechanism is arranged in each limit hole, support rods with equal intervals are fixed at the top end of the base, one ends of the support rods extend to the outside of the fixing seat, clamping blocks are fixed on the top ends of the support rods, and clamping balls are arranged in each clamping block. The invention not only realizes the function of conveniently containing sound waves, the function of slowing down the aging time of the sensor, but also realizes the function of conveniently dismounting the mechanism.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to a SAW (surface acoustic wave) passive wireless sensor device.
Background
Along with the more and more sound waves found in nature, various sound waves have certain influence on the life of people, an inductor is needed when sound wave information is collected, and a SAW (surface acoustic wave) passive wireless sensor device is an important component part of the SAW passive wireless sensor device, so that the device on the market is various and can basically meet the use requirements of people, but certain problems still exist, and the specific problems include the following points:
(1) when the traditional SAW surface acoustic wave passive wireless sensor device is used, the resolution is low when the device is used due to the insufficient functions;
(2) when the traditional SAW surface acoustic wave passive wireless sensor device is used, the service life is low due to the insufficient protection measures;
(3) when the traditional SAW surface acoustic wave passive wireless sensor device is used, due to the inconvenience of disassembly and assembly, the device is extremely inconvenient to replace.
Disclosure of Invention
The invention aims to provide a SAW (surface acoustic wave) passive wireless sensor device, which aims to solve the problems of insufficient device functions, insufficient protection measures and inconvenience in disassembly and assembly in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a passive wireless sensor device of SAW (surface acoustic wave) comprises a base, fixing holes, a fixing seat, an auxiliary mechanism and a fixing groove, wherein the fixing holes are arranged at equal intervals in the base, the fixing seat is arranged at the top end of the base, the auxiliary mechanism is fixed on two sides of the fixing seat, a guide plate, a fixed block, a pressing plate, a push rod, a first limiting plate, a limiting groove, a movable groove, a first spring, a second limiting plate and a movable rod are sequentially arranged in the auxiliary mechanism, the fixed block is arranged at two ends of one side of the guide plate, one side of the fixed block is fixedly connected with the fixing seat, the limiting groove is arranged in the fixed block, the push rod is arranged in the limiting groove, one end of the push rod, close to the guide plate, extends into the fixed block, one end of the push rod, far away from the guide plate, extends into the outer part of the fixed block and is fixed with the pressing plate, a first limiting plate is fixed on the outer wall of the push rod in the limiting groove, a movable groove is arranged on one side in the guide plate, a first spring is arranged in the movable groove, second limiting plates are arranged at two ends of the first spring in the movable groove, a movable rod is fixed at one end of the second limiting plate away from the first spring, one end of the movable rod extends into the fixed block to be matched with the push rod, a fixed groove is arranged in the fixed seat, an inductor is arranged in the fixed groove, limiting holes with equal intervals are arranged at two sides of the fixed groove above the inductor, a locking mechanism is arranged in each limiting hole, a main connecting rod, a limiting rod, a guide hole, a guide rod, a second spring, a fixed plate and an auxiliary connecting rod are sequentially arranged in the locking mechanism, and second springs with equal intervals are fixed at the top end of the main connecting rod, and the top of second spring all is fixed with the auxiliary connecting rod, the inside one side of keeping away from the second spring of auxiliary connecting rod all is provided with the bullport, and the inside of bullport all is provided with the guide bar, the one end of guide bar all extend to the outside of auxiliary connecting rod and with main connecting rod fixed connection, the other end of guide bar all extends to the outside of auxiliary connecting rod and is fixed with the fixed plate, the both sides of main connecting rod bottom and the both sides on auxiliary connecting rod top all are fixed with the gag lever post, and the one end of gag lever post all mutually supports with spacing hole.
Preferably, the top of base is fixed with equidistant bracing piece, and the one end of bracing piece all extends to the outside of fixing base and is fixed with the joint piece, the inside of joint piece all is provided with the joint ball, and the top of joint ball all is fixed with the protection casing.
Preferably, one side that the inside fixed slot of fixing base is close to complementary unit all is provided with the guiding groove, one side that the fixed slot was kept away from to the inside guiding groove of fixing base all is provided with the joint groove.
It is preferred.
It is preferred.
Compared with the prior art, the invention has the beneficial effects that: the SAW surface acoustic wave passive wireless sensor device not only realizes the function of conveniently containing acoustic waves of the mechanism, realizes the function of slowing down the aging time of the sensor, but also realizes the function of conveniently dismounting and mounting the mechanism;
(1) the sensor is arranged in the fixing groove formed in the fixing seat, the guide grooves are arranged on two sides of the fixing groove, the clamping groove is formed in one side, away from the fixing groove, of the guide groove in the fixing seat, the fixing blocks are fixed on two sides of the fixing seat, the guide plate is arranged between the fixing blocks, and the guide plate and the clamping groove are mutually clamped, so that the function that the mechanism is convenient to store sound waves is achieved, and the resolution ratio of the SAW passive surface acoustic wave wireless sensor device in use is improved;
(2) the supporting rods with equal intervals are fixed at the top end of the base, the clamping blocks are fixed at the top ends of the supporting rods, the clamping balls are arranged in the clamping blocks, and the protective covers are fixed at the top ends of the clamping balls, so that the function of slowing down the aging time of the sensor by the mechanism is realized, and the service life of the SAW surface acoustic wave passive wireless sensor is prolonged;
(3) fixed slot both sides through the inductor top set up spacing hole, the inside in spacing hole sets up the gag lever post, the fixed primary connecting rod of gag lever post one end of fixed slot one side, the fixed secondary connecting rod of gag lever post one end of fixed slot opposite side, the fixed equidistant second spring in primary connecting rod top, the other end and the secondary connecting rod fixed connection of second spring, the inside one side of keeping away from the second spring of secondary connecting rod sets up the bullport, the inside of bullport sets up the guide bar, the one end of guide bar extend to the outside of secondary connecting rod and with primary connecting rod fixed connection, the other end of guide bar extends to the outside and the fixed plate of secondary connecting rod, the function of the dismouting of being convenient for of this mechanism has been realized, thereby the convenience of this passive wireless sensor device of SAW when using has been improved.
Drawings
FIG. 1 is a schematic cross-sectional front view of the present invention;
FIG. 2 is a schematic top cross-sectional view of the present invention;
FIG. 3 is a schematic side view of the present invention;
FIG. 4 is a schematic view of a front view of the base of the present invention;
FIG. 5 is a schematic top sectional view of the auxiliary mechanism of the present invention;
FIG. 6 is an enlarged partial cross-sectional view taken at A in FIG. 1 according to the present invention.
In the figure: 1. a base; 2. a fixing hole; 3. a fixed seat; 4. an auxiliary mechanism; 401. a guide plate; 402. a fixed block; 403. pressing a plate; 404. a push rod; 405. a first limit plate; 406. a limiting groove; 407. a movable groove; 408. a first spring; 409. a second limiting plate; 410. a movable rod; 5. a protective cover; 6. a support bar; 7. clamping the ball; 8. a clamping block; 9. fixing grooves; 10. a limiting hole; 11. an inductor; 12. a locking mechanism; 1201. a main link; 1202. a limiting rod; 1203. a guide hole; 1204. a guide rod; 1205. a second spring; 1206. a fixing plate; 1207. an auxiliary connecting rod; 13. a guide groove; 14. a clamping groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, an embodiment of the present invention is shown: a SAW surface acoustic wave passive wireless sensor device comprises a base 1, fixing holes 2, fixing seats 3, auxiliary mechanisms 4 and fixing grooves 9, wherein the fixing holes 2 with equal intervals are formed in the base 1, the fixing seats 3 are arranged at the top end of the base 1, and the auxiliary mechanisms 4 are fixed on two sides of each fixing seat 3;
the auxiliary mechanism 4 is internally provided with a guide plate 401, a fixed block 402, a pressing plate 403, a push rod 404, a first limit plate 405, a limit groove 406, a movable groove 407, a first spring 408, a second limit plate 409 and a movable rod 410 in sequence, both ends of one side of the guide plate 401 are provided with the fixed block 402, one side of the fixed block 402 is fixedly connected with the fixed seat 3, the fixed block 402 is internally provided with the limit groove 406, the push rod 404 is internally provided with the limit groove 406, one end of the push rod 404 close to the guide plate 401 extends into the fixed block 402, one end of the push rod 404 far away from the guide plate 401 extends to the outside of the fixed block 402 and is fixed with the pressing plate 403, the outer wall of the push rod 404 inside the limit groove 406 is fixed with the first limit plate 405, one side of the inside of the guide plate 401 is provided with the movable groove 407, the movable groove 407 is internally provided with the first spring 408, both ends of the first spring 408 inside the movable groove 407 are provided with the second limit plate 409, a movable rod 410 is fixed at one end of the second limiting plate 409 far away from the first spring 408, and one end of the movable rod 410 extends into the fixed block 402 to be matched with the push rod 404;
when the mechanism is used, the movable rod 410 is pressed into the guide plate 401, then the guide plate 401 is placed between the fixed blocks 402, under the action of the elastic force of the first spring 408, the second limiting plate 409 can push the movable rod 410 to move into the fixed blocks 402, the guide plate 401 is clamped with the clamping groove 14, when adjustment is needed, the press plate 403 is pressed, the push rod 404 pushes the movable rod 410 to move out of the fixed blocks 402, the guide plate 401 is separated from the fixed blocks 402, and when the surface acoustic wave moves to the guide plate 401, the surface acoustic wave is transmitted to the inductor 11 through the guide plate 401 and the guide groove 13, so that the function of conveniently storing the acoustic wave of the mechanism is realized, and the resolution of the surface acoustic wave passive wireless sensor device is improved when the device is used;
a fixing groove 9 is formed in the fixing seat 3, an inductor 11 is arranged in the fixing groove 9, limiting holes 10 with equal intervals are formed in two sides of the fixing groove 9 above the inductor 11, and a locking mechanism 12 is arranged in each limiting hole 10;
a main connecting rod 1201, a limiting rod 1202, a guide hole 1203, a guide rod 1204, a second spring 1205, a fixing plate 1206 and an auxiliary connecting rod 1207 are sequentially arranged inside the locking mechanism 12, the second spring 1205 with equal intervals is fixed at the top end of the main connecting rod 1201, the auxiliary connecting rod 1207 is fixed at the top end of the second spring 1205, the guide hole 1203 is arranged on one side, far away from the second spring 1205, of the inner portion of the auxiliary connecting rod 1207, the guide rod 1204 is arranged inside the guide hole 1203, one end of the guide rod 1204 extends to the outer portion of the auxiliary connecting rod 1207 and is fixedly connected with the main connecting rod 1201, the other end of the guide rod 1204 extends to the outer portion of the auxiliary connecting rod 1207 and is fixed with the fixing plate 1206, the limiting rods 1202 are fixed on two sides of the bottom end of the main connecting rod 1201 and two sides of the top end of the auxiliary connecting rod 1207, and one end of the limiting rod 1202 is matched with the limiting hole 10;
when the mechanism is used, under the action of the elastic force of the second spring 1205, the main connecting rod 1201 and the auxiliary connecting rod 1207 can push the limiting rod 1202 to move to the inside of the limiting hole 10, when a sensor is replaced or maintained, the auxiliary connecting rod 1207 and the main connecting rod 1201 are moved, and under the action of the guide rod 1204 and the guide hole 1203, the limiting rod 1202 is moved to the outside of the limiting hole 10, so that the function of facilitating disassembly and assembly of the mechanism is realized, and the convenience of the SAW (surface acoustic wave) passive wireless sensor device in use is improved;
the top end of the base 1 is fixedly provided with the supporting rods 6 at equal intervals, one ends of the supporting rods 6 extend to the outer part of the fixing base 3 and are fixedly provided with the clamping blocks 8, the clamping balls 7 are arranged in the clamping blocks 8, and the top ends of the clamping balls 7 are fixedly provided with the protective covers 5, so that the function of slowing down the aging time of the sensor by the mechanism is realized, and the service life of the SAW (surface acoustic wave) passive wireless sensor is prolonged;
one side that fixing base 3 inside fixed slot 9 is close to complementary unit 4 all is provided with guiding groove 13, and one side that fixing slot 9 was kept away from to fixing base 3 inside guiding groove 13 all is provided with joint groove 14.
The working principle is as follows: when the mechanism is used, firstly, the movable rod 410 is pressed into the guide plate 401, then the guide plate 401 is placed between the fixed blocks 402, under the action of the elastic force of the first spring 408, the second limiting plate 409 can push the movable rod 410 to move into the fixed block 402, the guide plate 401 and the clamping groove 14 are clamped with each other, when adjustment is needed, the press plate 403 is pressed, the push rod 404 pushes the movable rod 410 to move out of the fixed block 402, the guide plate 401 is separated from the fixed block 402, when the surface acoustic wave moves to the guide plate 401, the surface acoustic wave can be transmitted to the sensor 11 through the guide plate 401 and the guide groove 13, the function of the mechanism convenient for containing the acoustic wave is realized, the resolution of the SAW passive wireless sensor device in use is improved, then, under the action of the elastic force of the second spring 1205, the main connecting rod 1201 and the auxiliary connecting rod 1207 can push the limiting rod 1202 to move into the limiting hole 10, when the sensor is replaced or maintained, remove vice connecting rod 1207 and main link 1201, it is under the effect of guide pole 1204 and bullport 1203, make gag lever post 1202 move to the outside of spacing hole 10, the function of the dismouting of being convenient for of this mechanism has been realized, thereby the convenience of this passive wireless sensor device of SAW surface acoustic wave when using has been improved, and finally, place protection casing 5 in the top of fixing base 3, press protection casing 5 and make joint ball 7 move into the inside of joint piece 8, be fixed in the top of inductor 11 with protection casing 5, avoided inductor 11 directly to expose in the air, the function that this mechanism slowed down the sensor ageing time has been realized, thereby this passive wireless sensor of SAW surface acoustic wave's life has been prolonged, the work of this passive wireless sensor of SAW surface acoustic wave is finally accomplished.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (3)
1. The utility model provides a passive wireless sensor device of SAW surface acoustic wave, includes base (1), fixed orifices (2), fixing base (3), complementary unit (4) and fixed slot (9), its characterized in that: the fixing device is characterized in that fixing holes (2) with equal intervals are formed in the base (1), a fixing seat (3) is arranged at the top end of the base (1), auxiliary mechanisms (4) are fixed on two sides of the fixing seat (3), a guide plate (401), a fixing block (402), a pressing plate (403), a push rod (404), a first limiting plate (405), a limiting groove (406), a movable groove (407), a first spring (408), a second limiting plate (409) and a movable rod (410) are sequentially arranged in each auxiliary mechanism (4), the fixing block (402) is arranged at two ends of one side of the guide plate (401), one side of the fixing block (402) is fixedly connected with the fixing seat (3), a limiting groove (406) is arranged in each fixing block (402), the push rod (404) is arranged in each limiting groove (406), one end, close to the guide plate (401), of the push rod (404) extends to the inside of the fixing block (402), one end of the push rod (404), which is far away from the guide plate (401), extends to the outside of the fixed block (402) and is fixed with a pressing plate (403), a first limiting plate (405) is fixed on the outer wall of the push rod (404) in the limiting groove (406), one side of the interior of the guide plate (401) is provided with a movable groove (407), a first spring (408) is arranged in the movable groove (407), two ends of the first spring (408) in the movable groove (407) are provided with second limiting plates (409), one end of the second limiting plate (409), which is far away from the first spring (408), is fixed with a movable rod (410), one end of the movable rod (410) extends to the interior of the fixed block (402) and is matched with the push rod (404), a fixed groove (9) is arranged in the fixed seat (3), an inductor (11) is arranged in the fixed groove (9), both sides of a fixing groove (9) above the inductor (11) are provided with limit holes (10) at equal intervals, the interiors of the limit holes (10) are provided with locking mechanisms (12), a main connecting rod (1201), a limit rod (1202), a guide hole (1203), a guide rod (1204), a second spring (1205), a fixing plate (1206) and an auxiliary connecting rod (1207) are sequentially arranged in the locking mechanisms (12), the top end of the main connecting rod (1201) is fixed with the second spring (1205) at equal intervals, the top end of the second spring (1205) is fixed with the auxiliary connecting rod (1207), one side, far away from the second spring (1205), of the interior of the auxiliary connecting rod (1207) is provided with the guide hole (1203), the interior of the guide hole (1203) is provided with the guide rod (1204), one end of the guide rod (1204) extends to the exterior of the auxiliary connecting rod (1207) and is fixedly connected with the main connecting rod (1201), the other end of the guide rod (1204) extends to the outside of the auxiliary connecting rod (1207) and is fixed with a fixing plate (1206), the two sides of the bottom end of the main connecting rod (1201) and the two sides of the top end of the auxiliary connecting rod (1207) are fixed with limiting rods (1202), and one ends of the limiting rods (1202) are matched with the limiting holes (10).
2. A SAW surface acoustic wave passive wireless sensor device as claimed in claim 1, wherein: the top of base (1) is fixed with equidistant bracing piece (6), and the one end of bracing piece (6) all extends to the outside of fixing base (3) and is fixed with joint piece (8), the inside of joint piece (8) all is provided with joint ball (7), and the top of joint ball (7) all is fixed with protection casing (5).
3. A SAW surface acoustic wave passive wireless sensor device as claimed in claim 1, wherein: one side that fixing base (3) inside fixed slot (9) are close to complementary unit (4) all is provided with guiding groove (13), one side that fixing base (3) inside guiding groove (13) kept away from fixed slot (9) all is provided with joint groove (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911064269.5A CN110836679B (en) | 2019-11-04 | 2019-11-04 | SAW surface acoustic wave passive wireless sensor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911064269.5A CN110836679B (en) | 2019-11-04 | 2019-11-04 | SAW surface acoustic wave passive wireless sensor device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110836679A CN110836679A (en) | 2020-02-25 |
| CN110836679B true CN110836679B (en) | 2021-08-31 |
Family
ID=69576145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911064269.5A Active CN110836679B (en) | 2019-11-04 | 2019-11-04 | SAW surface acoustic wave passive wireless sensor device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110836679B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63307326A (en) * | 1987-06-09 | 1988-12-15 | Fujikura Ltd | Pressure sensor and production thereof |
| CN101644608B (en) * | 2009-05-20 | 2013-05-29 | 中国科学院声学研究所 | Integrated surface acoustic wave wireless temperature sensor |
| CN103557956B (en) * | 2013-10-10 | 2016-01-20 | 软控股份有限公司 | Wireless passive sonic surface wave delay line type temperature and pressure sensor |
| CN105117764B (en) * | 2015-08-27 | 2018-03-06 | 中电科技德清华莹电子有限公司 | A kind of high-performance anticollision SAW delay line type wireless sensor system |
| CN206505045U (en) * | 2017-03-07 | 2017-09-19 | 东莞市创造者机械设备有限公司 | A kind of easy-to-dismount ultrasonic probe |
| CN206834316U (en) * | 2017-06-09 | 2018-01-02 | 天津师范大学 | A kind of high-temperature superconducting microwave resonator for being easy to combination to install |
| CN107817363A (en) * | 2017-10-26 | 2018-03-20 | 南通大学 | A kind of resonance single phase unidirectional transducer type surface acoustic wave acceleration transducer |
| CN108680199B (en) * | 2018-04-28 | 2020-09-25 | 北京机械设备研究所 | Surface acoustic wave temperature and humidity sensor |
-
2019
- 2019-11-04 CN CN201911064269.5A patent/CN110836679B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110836679A (en) | 2020-02-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110836679B (en) | SAW surface acoustic wave passive wireless sensor device | |
| CN210120111U (en) | Damping and pressure-resisting device of inductively coupled plasma mass spectrometer | |
| CN210831117U (en) | Single-air-path air sampler tripod for air purification | |
| CN208836131U (en) | A kind of intercom | |
| CN209992473U (en) | Multifunctional air quality monitor | |
| CN211940652U (en) | Multifunctional instrument mounting tool | |
| CN210958689U (en) | Outdoor speaker convenient to installation is maintained protection against electric shock sound photoelectricity integration | |
| CN210956360U (en) | Inductor convenient to disassemble and assemble | |
| CN209665646U (en) | A kind of hollow hollowed-out board processing workbench facilitating adjusting | |
| CN112064927A (en) | Assembled soft or hard package convenient to dismouting | |
| CN216911659U (en) | Production awning is with aluminium alloy processingequipment that buckles | |
| CN209994422U (en) | Stable vehicle-mounted mobile phone support | |
| CN209748814U (en) | Silicon microphone with waterproof construction | |
| CN213084316U (en) | Intelligent mechanical device for collecting garbage in internal channel of high-speed rail | |
| CN211110000U (en) | Assembling jig for loudspeaker vibration assembly | |
| CN213562076U (en) | Suspension mounting structure of nitrogen spring assembly | |
| CN110838921A (en) | Novel jam-proof security protection communications facilities | |
| CN213754923U (en) | Headset slide rail | |
| CN219512196U (en) | Oxygen alarm for limited space operation | |
| CN216122852U (en) | Multifunctional Bluetooth headset box | |
| CN219160618U (en) | Stainless steel heat exchanger | |
| CN209666070U (en) | A kind of plastic housing pressing mold | |
| CN215219576U (en) | Portable electronic information equipment | |
| CN209915813U (en) | Clamping structure of glass screen of shower room | |
| CN211152003U (en) | Electronic communication equipment mounting fixture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |