CN209056203U - A kind of student attendance electronics class board of receivable wide scope radiofrequency signal - Google Patents
A kind of student attendance electronics class board of receivable wide scope radiofrequency signal Download PDFInfo
- Publication number
- CN209056203U CN209056203U CN201822111390.6U CN201822111390U CN209056203U CN 209056203 U CN209056203 U CN 209056203U CN 201822111390 U CN201822111390 U CN 201822111390U CN 209056203 U CN209056203 U CN 209056203U
- Authority
- CN
- China
- Prior art keywords
- fixed
- module
- shell
- display
- electronics class
- 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.)
- Expired - Fee Related
Links
Landscapes
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The utility model belongs to electronics class board technical field, the student attendance electronics class board of in particular a kind of receivable wide scope radiofrequency signal, shell including concave inward structure, the display being connected together positioned at the shell front surface, the display and external power supply are electrically connected, the side of the display is fixed with mounting plate, and threaded hole is offered on the mounting plate, the front surface of the shell is fixed with identifier below the display, the identifier and external power supply are electrically connected, the upper surface of the shell is fixed with the first holder of hollow structure；Because single-chip microcontroller is connected with cloud by WIFI module signal, electronics class board can obtain weather column or news column by cloud, and it is transferred on display by display module, so that electronics class board is vdiverse in function, single-chip microcontroller is connected with mobile phone terminal by bluetooth module signal, user can read the information recorded on electronics class board by mobile phone terminal, further offer convenience to user.
Description
Technical field
The utility model belongs to electronics class board technical field, and in particular to a kind of student of receivable wide scope radiofrequency signal
Attendance electronics class board.
Background technique
Electronics class board is that one kind is mounted on classroom doorway, is used to real-time display school notice, class's notice, settable concentration
Distributed management, freely controls each terminal, and teacher can be by mobile phone directly by newest message Dynamic Display in electronics class
On board, allow each student that can recognize newest content.
Existing electronics class board, when staff places or installs, the conducting wire person inconvenient to use on electronics class board is stored,
It is likely to result in conductive line surfaces abrasion, causes the danger of electric leakage, and electronics class board has a single function, it has not been convenient to which student uses, and gives
Student makes troubles.
Utility model content
To solve to propose existing electronics class board in above-mentioned background technique, when staff places or installs, electronics class board
On conducting wire person inconvenient to use storage, be likely to result in conductive line surfaces abrasion, cause the danger of electric leakage, and electronics class board function
It can be single, it has not been convenient to which student uses, the problem of making troubles to student.
The utility model provides the following technical solutions: a kind of student attendance electronics class of receivable wide scope radiofrequency signal
Board, the shell including concave inward structure, the display being connected together positioned at the shell front surface, the display and external power supply
It is electrically connected, the side of the display is fixed with mounting plate, and threaded hole is offered on the mounting plate, the shell
Front surface is fixed with identifier below the display, and the identifier and external power supply are electrically connected, described outer
The upper surface of shell is fixed with the first holder of hollow structure, and the inside of first holder is fixed with by 3M glue sticking
Circuit board, the upper surface of the circuit board are fixed with single-chip microcontroller, the upper table of the front of the single-chip microcontroller close to the circuit board
Face is fixed with bluetooth module, and the side of the single-chip microcontroller is fixed with WIFI module close to the upper surface of the circuit board, institute
The front for stating WIFI module is fixed with display module close to the upper surface of the circuit board, and the side of the WIFI module is close
The upper surface of the circuit board is fixed with identification module, and the side of the identification module is solid close to the upper surface of the circuit board
Surely storage module, the bluetooth module, the display module, the storage module, the identification module, the WIFI mould are equipped with
Block and the single-chip microcontroller are electrically connected with external power supply, and the side of the shell is equipped with first close to the front of the mounting plate
Limit plate, the shell and first limit plate are welded and fixed, and first limit plate is fixed far from one end of the shell
Lateral wall equipped with connecting tube, and the connecting tube is arranged restraining position ring block, and the stop collar and the connecting tube are slidably connected, institute
The lateral wall for stating stop collar is adhesively fixed with the first connection buckle, and the connecting tube is set far from one end fixation of first limit plate
There is the second limit plate, and the lateral wall of second limit plate is adhesively fixed with the second connection buckle, the bottom surface of the shell is fixed
The second holder equipped with hollow structure, the bottom surface of second holder are fixed with shaft, are fixed in the shaft
Cloth is placed, the placement cloth and second holder are rotatablely connected by the shaft, the outer surface suture for placing cloth
It is connected with storage pocket, and is fixed with velcro on the storage pocket.
Preferably, the quantity of the storage pocket is several, several described storage pockets are symmetrically distributed in the placement
The outer surface of cloth.
Preferably, the stop collar and second limit plate pass through first connection buckle and the second connection buckle
Close connection.
Preferably, the single-chip microcontroller is connected with the display by the display module signal, the single-chip microcontroller and hand
Generator terminal is connected by the bluetooth module signal, and the single-chip microcontroller is connected with cloud by the WIFI module signal.
Preferably, the quantity of the mounting plate is two, and two mounting plates are symmetrically distributed in the side of the shell
Face.
Preferably, the single-chip microcontroller is connected by the storage module with the identification module signal with the identifier.
Preferably, the shaft quantity is two, and second holder and the placement cloth pass through two shafts
Rotation connection.
Compared with prior art, the utility model has the beneficial effects that being equipped with the second holder on the shell, pass through shaft
Second holder is connected with cloth is placed, user can be examined when using electronics class board by the storage pocket collection placed on cloth
Diligent magnetic card can also be equipped on the shell the first limit plate, by connecting tube first using placement cloth as the column that Articles found, owner please contact
Limit plate and the connection of the second limit plate, because of the restraining position ring block that is slidably connected in connecting tube, electronics class board is installed or placed in staff
When, the conducting wire on electronics class board can be wrapped in connecting tube, slide stop collar, by the first connection buckle on stop collar and
The fixed conducting wire of the second connection buckle on second limit plate, because single-chip microcontroller is connected with cloud by WIFI module signal, electronics class board
Weather column or news column can be obtained by cloud, and be transferred on display by display module, so that electronics class
Board is vdiverse in function, and single-chip microcontroller is connected with mobile phone terminal by bluetooth module signal, and user can read electronics class board by mobile phone terminal
The information of upper record, further offers convenience to user.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the connecting pipe structure schematic diagram in the utility model；
Fig. 3 is the board structure of circuit schematic diagrames in the utility model；
Fig. 4 is the flow diagram of the utility model；
In figure: 1, shell；11, display；12, identifier；2, the first holder；21, circuit board；211, bluetooth module；
212, display module；213, storage module；214, identification module；215, WIFI module；216, single-chip microcontroller；3, the first limit plate；
31, stop collar；32, the first connection buckle；33, the second connection buckle；34, the second limit plate；35, connecting tube；4, the second holder；
41, cloth is placed；42, storage pocket；43, velcro；44, shaft；5, mounting plate；51, threaded hole.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1
Fig. 1-4 is please referred to, the utility model is the following technical schemes are provided: a kind of student of receivable wide scope radiofrequency signal
Attendance electronics class board, the shell 1 including concave inward structure, the display 11 being connected together positioned at 1 front surface of shell, display 11
It is electrically connected with external power supply, the side of display 11 is fixed with mounting plate 5, and threaded hole 51 is offered on mounting plate 5, outside
The front surface of shell 1 is fixed with identifier 12 close to the lower section of display 11, and identifier 12 and external power supply are electrically connected, shell
1 upper surface is fixed with the first holder 2 of hollow structure, and the inside of the first holder 2 is fixed with electricity by 3M glue sticking
Road plate 21, the upper surface of circuit board 21 are fixed with single-chip microcontroller 216, and the front of single-chip microcontroller 216 is close to the upper surface of circuit board 21
It is fixed with bluetooth module 211, the side of single-chip microcontroller 216 is fixed with WIFI module 215 close to the upper surface of circuit board 21,
The front of WIFI module 215 is fixed with display module 212 close to the upper surface of circuit board 21, and the side of WIFI module 215 is leaned on
The upper surface of nearly circuit board 21 is fixed with identification module 214, and the side of identification module 214 is solid close to the upper surface of circuit board 21
Surely storage module 213, bluetooth module 211, display module 212, storage module 213, identification module 214, WIFI module 215 are equipped with
It being electrically connected with external power supply with single-chip microcontroller 216, the side of shell 1 is equipped with the first limit plate 3 close to the front of mounting plate 5,
Shell 1 and the first limit plate 3 are welded and fixed, and the first limit plate 3 is fixed with connecting tube 35 far from one end of shell 1, and connects
The lateral wall of pipe 35 is arranged restraining position ring block 31, and stop collar 31 and connecting tube 35 are slidably connected, and the lateral wall bonding of stop collar 31 is solid
Surely there is the first connection buckle 32, connecting tube 35 is fixed with the second limit plate 34, and the second limit far from one end of the first limit plate 3
The lateral wall of plate 34 is adhesively fixed with the second connection buckle 33, and the bottom surface of shell 1 is fixed with the second holder 4 of hollow structure,
The bottom surface of second holder 4 is fixed with shaft 44, is fixed in shaft 44 and places cloth 41, places cloth 41 and the second holder
4 are rotatablely connected by shaft 44, and the outer surface suture for placing cloth 41 is connected with storage pocket 42, and is fixed with evil spirit on storage pocket 42
Art patch 43.
In the present embodiment: single-chip microcontroller 216 is connected with cloud by 215 signal of WIFI module, and electronics class board can pass through cloud
Weather column or news column are obtained, and is transferred on display 11 by display module 212, WIFI module 215 can also be passed through
Class's information is transferred to cloud, because single-chip microcontroller 216 is connected with mobile phone terminal by 211 signal of bluetooth module, user can pass through
Mobile phone terminal reads the information recorded on electronics class board, and identifier 12 is equipped on shell 1, because single-chip microcontroller 216 and identifier 12 are logical
It crosses storage module 213 to connect with 214 signal of identification module, user can identify attendance magnetic card by identifier 12, and pass through list
Identification information is transferred to cloud or mobile phone terminal by piece machine 216, and parent can remotely learn whether student goes to school on time or classes are over, bluetooth
The model F213 of module 211, the model F11AUUM13-W1 of WIFI module 215, the model of single-chip microcontroller 216
STM32F407IGT6。
In the present embodiment: placing cloth 41 is mainly nylon material, and user, can be by placing cloth when using electronics class board
Storage pocket 42 on 41 collects attendance magnetic card, and the opening of storage pocket 42 is sealed by the velcro 43 on storage pocket 42.
In the present embodiment: being equipped with the second holder 4 on shell 1, the second holder 4 and place cloth by shaft 44
41 connections, user can collect attendance magnetic card by the storage pocket 42 placed on cloth 41 when using electronics class board, can also be putting
Cloth 41 is set as the column that Articles found, owner please contact, because the second holder 4 is hollow structure, staff when not in use, can be by the
Cloth 41 is placed in the storage of two holders 4, and the first limit plate 3 is equipped on shell 1, by connecting tube 35 the first limit plate 3 and the
The connection of two limit plates 34,, can when electronics class board is installed or placed in staff because of the restraining position ring block 31 that is slidably connected in connecting tube 35
The conducting wire on electronics class board is wrapped in connecting tube 35, stop collar 31 is slided, the first connection buckle on stop collar 31 is passed through
32 and the fixed conducting wire of second the second connection buckle 33 on limit plate 34, because single-chip microcontroller 216 and cloud pass through 215 signal of WIFI module
Connection, electronics class board can obtain weather column or news column by cloud, and be transferred to display 11 by display module 212
On, class's information can also be transferred to cloud by WIFI module 215, because single-chip microcontroller 216 and mobile phone terminal pass through bluetooth module 211
Signal connection, user can read the information recorded on electronics class board by mobile phone terminal, identifier 12 are equipped on shell 1, because
Single-chip microcontroller 216 is connected by storage module 213 with 214 signal of identification module with identifier 12, and user can pass through identifier 12
It identifies attendance magnetic card, and identification information is transferred to by single-chip microcontroller 216 by cloud or mobile phone terminal, parent can remotely learn that student is
It is no to go to school on time or classes are over.
Specifically, the quantity of storage pocket 42 is several, several storage pockets 42, which are symmetrically distributed in, places the outer of cloth 41
Surface；User can collect attendance magnetic card by the storage pocket 42 placed on cloth 41 when using electronics class board, can also be placement
Cloth 41 offers convenience as the column that Articles found, owner please contact to student.
Specifically, stop collar 31 and the second limit plate 34 are connected together by the first connection buckle 32 and the second connection buckle 33；
It, can be on electronics class board when electronics class board is installed or placed in staff because of the restraining position ring block 31 that is slidably connected in connecting tube 35
Conducting wire be wrapped in connecting tube 35, slide stop collar 31, pass through the first connection buckle 32 and the second limit plate on stop collar 31
The fixed conducting wire of the second connection buckle 33 on 34.
Specifically, single-chip microcontroller 216 is connected with display 11 by 212 signal of display module, single-chip microcontroller 216 and mobile phone terminal are logical
The connection of 211 signal of bluetooth module is crossed, single-chip microcontroller 216 is connected with cloud by 215 signal of WIFI module, single-chip microcontroller 216 and identification
Device 12 is connected by storage module 213 with 214 signal of identification module；Because single-chip microcontroller 216 and cloud pass through 215 signal of WIFI module
Connection, electronics class board can obtain weather column or news column by cloud, and be transferred to display 11 by display module 212
On, class's information can also be transferred to cloud by WIFI module 215, because single-chip microcontroller 216 and mobile phone terminal pass through bluetooth module 211
Signal connection, user can read the information recorded on electronics class board by mobile phone terminal, identifier 12 are equipped on shell 1, because
Single-chip microcontroller 216 is connected by storage module 213 with 214 signal of identification module with identifier 12, and user can pass through identifier 12
It identifies attendance magnetic card, and identification information is transferred to by single-chip microcontroller 216 by cloud or mobile phone terminal, parent can remotely learn that student is
It is no to go to school on time or classes are over.
Specifically, the quantity of mounting plate 5 is two, two mounting plates 5 are symmetrically distributed in the side of shell 1；In shell 1
Side be equipped with mounting plate 5, staff is by bolt-through threaded hole 51, and then mounting plate 5 fixed on metope.
Specifically, 44 quantity of shaft is two, the second holder 4 and placement cloth 41 are rotatablely connected by two shafts 44；
It is equipped with the second holder 4 on shell 1, second holder 4 and placement cloth 41 are connected by shaft 44, user is using electricity
When sub- class's board, attendance magnetic card can be collected by the storage pocket 42 placed on cloth 41, it can also be using placement cloth 41 as Articles found, owner please contact
Column, because the second holder 4 is hollow structure, staff when not in use, can be stored by the second holder 4 and place cloth
41。
Shell 1: being placed into job site by the working principle and process for using of the utility model, is set in the side of shell 1
There is mounting plate 5, staff is fixed on metope by bolt-through threaded hole 51, and then mounting plate 5, sets on shell 1
There is the second holder 4, second holder 4 and placement cloth 41 is connected by shaft 44, user, can when using electronics class board
Attendance magnetic card is collected by the storage pocket 42 placed on cloth 41, it can also be using placement cloth 41 as the column that Articles found, owner please contact, because of second
Holder 4 is hollow structure, and staff when not in use, can be stored by the second holder 4 and place cloth 41, on shell 1
Equipped with the first limit plate 3, first limit plate 3 and the second limit plate 34 are connected by connecting tube 35, because being slided in connecting tube 35
Restraining position ring block 31 is connected, when electronics class board is installed or placed in staff, the conducting wire on electronics class board can be wrapped in connection
On pipe 35, stop collar 31 is slided, the second connection buckle on the first connection buckle 32 and the second limit plate 34 on stop collar 31 is passed through
33 fixed conducting wires, because single-chip microcontroller 216 is connected with cloud by 215 signal of WIFI module, electronics class board can obtain day by cloud
Gas column or news column, and be transferred on display 11 by display module 212, it can also be by WIFI module 215 class
Information is transferred to cloud, and because single-chip microcontroller 216 is connected with mobile phone terminal by 211 signal of bluetooth module, user can pass through mobile phone terminal
The information recorded on electronics class board is read, identifier 12 is equipped on shell 1, because single-chip microcontroller 216 and identifier 12 pass through storage
Module 213 is connected with 214 signal of identification module, and user can identify attendance magnetic card by identifier 12, and pass through single-chip microcontroller 216
Identification information is transferred to cloud or mobile phone terminal, parent can remotely learn whether student goes to school on time or classes are over.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of student attendance electronics class board of receivable wide scope radiofrequency signal, the shell (1) including concave inward structure are located at
The display (11) that shell (1) front surface is connected together, the display (11) and external power supply are electrically connected, described aobvious
Show that the side of device (11) is fixed with mounting plate (5), and offer threaded hole (51) on the mounting plate (5), it is characterised in that:
The front surface of the shell (1) is fixed with identifier (12) below the display (11), the identifier (12)
It being electrically connected with external power supply, the upper surface of the shell (1) is fixed with the first holder (2) of hollow structure, and described the
The inside of one holder (2) is fixed with circuit board (21) by 3M glue sticking, and the upper surface of the circuit board (21) is fixed with
The front of single-chip microcontroller (216), the single-chip microcontroller (216) is fixed with bluetooth module close to the upper surface of the circuit board (21)
(211), the side of the single-chip microcontroller (216) is fixed with WIFI module (215), institute close to the upper surface of the circuit board (21)
The front for stating WIFI module (215) is fixed with display module (212), the WIFI close to the upper surface of the circuit board (21)
The side of module (215) is fixed with identification module (214), the identification module close to the upper surface of the circuit board (21)
(214) side is fixed with storage module (213) close to the upper surface of the circuit board (21), the bluetooth module (211),
The display module (212), the storage module (213), the identification module (214), the WIFI module (215) and described
Single-chip microcontroller (216) is electrically connected with external power supply, and the side of the shell (1) is equipped with close to the front of the mounting plate (5)
First limit plate (3), the shell (1) and first limit plate (3) are welded and fixed, and first limit plate (3) is far from institute
The one end for stating shell (1) is fixed with connecting tube (35), and the lateral wall of the connecting tube (35) is arranged restraining position ring block (31), institute
It states stop collar (31) and the connecting tube (35) is slidably connected, the lateral wall of the stop collar (31) is adhesively fixed with the first connection
It detains (32), the connecting tube (35) is fixed with the second limit plate (34) far from one end of first limit plate (3), and described
The lateral wall of second limit plate (34) is adhesively fixed with the second connection buckle (33), and the bottom surface of the shell (1) is fixed with hollow
The bottom surface of the second holder (4) of structure, second holder (4) is fixed with shaft (44), solid on the shaft (44)
Fixed be equipped with places cloth (41), and the placement cloth (41) and second holder (4) are rotatablely connected by the shaft (44), institute
The outer surface suture for stating placement cloth (41) is connected with storage pocket (42), and is fixed with velcro on the storage pocket (42)
(43)。
2. a kind of student attendance electronics class board of receivable wide scope radiofrequency signal according to claim 1, feature
Be: the quantity of the storage pocket (42) is several, several described storage pockets (42) are symmetrically distributed in the placement cloth
(41) outer surface.
3. a kind of student attendance electronics class board of receivable wide scope radiofrequency signal according to claim 1, feature
Be: the stop collar (31) and second limit plate (34) pass through first connection buckle (32) and second connection buckle
(33) it is connected together.
4. a kind of student attendance electronics class board of receivable wide scope radiofrequency signal according to claim 1, feature
Be: the single-chip microcontroller (216) is connected with the display (11) by the display module (212) signal, the single-chip microcontroller
(216) it is connected with mobile phone terminal by the bluetooth module (211) signal, the single-chip microcontroller (216) and cloud pass through the WIFI
The connection of module (215) signal.
5. a kind of student attendance electronics class board of receivable wide scope radiofrequency signal according to claim 1, feature
Be: the quantity of the mounting plate (5) is two, and two mounting plates (5) are symmetrically distributed in the side of the shell (1)
Face.
6. a kind of student attendance electronics class board of receivable wide scope radiofrequency signal according to claim 1, feature
Be: the single-chip microcontroller (216) and the identifier (12) pass through the storage module (213) and the identification module (214)
Signal connection.
7. a kind of student attendance electronics class board of receivable wide scope radiofrequency signal according to claim 1, feature
Be: shaft (44) quantity is two, and second holder (4) and the placement cloth (41) pass through two shafts
(44) it is rotatablely connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822111390.6U CN209056203U (en) | 2018-12-17 | 2018-12-17 | A kind of student attendance electronics class board of receivable wide scope radiofrequency signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822111390.6U CN209056203U (en) | 2018-12-17 | 2018-12-17 | A kind of student attendance electronics class board of receivable wide scope radiofrequency signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209056203U true CN209056203U (en) | 2019-07-02 |
Family
ID=67054972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822111390.6U Expired - Fee Related CN209056203U (en) | 2018-12-17 | 2018-12-17 | A kind of student attendance electronics class board of receivable wide scope radiofrequency signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209056203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110503737A (en) * | 2019-08-26 | 2019-11-26 | 世纪海航(厦门)科技有限公司 | A kind of automatic Work attendance method based on NFC, device, electronics class board and system |
-
2018
- 2018-12-17 CN CN201822111390.6U patent/CN209056203U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110503737A (en) * | 2019-08-26 | 2019-11-26 | 世纪海航(厦门)科技有限公司 | A kind of automatic Work attendance method based on NFC, device, electronics class board and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209056203U (en) | A kind of student attendance electronics class board of receivable wide scope radiofrequency signal | |
| CN207323864U (en) | Head air purifier | |
| CN110227011B (en) | Wireless power supply automatic alarm diaper | |
| CN205753559U (en) | Magnetic mobile phone charging bracket and magnetic charging equipment for mobile phone | |
| CN205545826U (en) | Automatic detachable bluetooth controlling means who charges | |
| CN207070266U (en) | Wireless headset charging base | |
| CN209525413U (en) | A kind of portable detector for distribution network failure positioning | |
| CN212324305U (en) | Microphone (CN) | |
| CN207123604U (en) | A kind of battery electric quantity checking device | |
| CN209640997U (en) | A kind of number switching technology control device | |
| CN213178734U (en) | Portable multifunctional air purifier | |
| CN220289862U (en) | Tourist visitor positioner | |
| CN206863098U (en) | A kind of Portable digital universal meter easily fixed | |
| CN211325593U (en) | Debridement cart for operating room nursing | |
| CN218243049U (en) | Charging circuit and magnetic attraction charging device thereof | |
| CN217587171U (en) | Hand-held type water quality testing appearance | |
| CN218921779U (en) | Special patient's gown of drainage tube | |
| CN212014745U (en) | Cell-phone storage device is used in classroom | |
| CN208318879U (en) | A kind of double-layer heat insulation recording cup | |
| CN216356822U (en) | Cell phone stand of packing knife is torn open in area | |
| CN218537651U (en) | Blood collection tube storage box with time recording function | |
| CN211271920U (en) | Night patrol recording tool | |
| CN208433166U (en) | A kind of school bag is listed | |
| CN211783578U (en) | Outdoor environment monitoring device | |
| CN209769223U (en) | Bracelet based on bluetooth communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190702 Termination date: 20191217 |