CN108847129A - A kind of lifting regulating mechanism of multimedia touching screen - Google Patents
A kind of lifting regulating mechanism of multimedia touching screen Download PDFInfo
- Publication number
- CN108847129A CN108847129A CN201810709358.XA CN201810709358A CN108847129A CN 108847129 A CN108847129 A CN 108847129A CN 201810709358 A CN201810709358 A CN 201810709358A CN 108847129 A CN108847129 A CN 108847129A
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- China
- Prior art keywords
- lifting
- touching screen
- multimedia touching
- protection
- regulating mechanism
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
The invention discloses a kind of lifting regulating mechanisms of multimedia touching screen,Including lifting pedestal,Lifting tube is provided on lifting pedestal,Lifting cylinder is provided in lifting tube,The output end of lifting cylinder straight up and is connected with lifting column,Lifting column slides up and down in lifting tube,The upper end of lifting column is connected with mounting base,Multimedia touching screen is fixed in mounting base,The both ends of mounting base are provided with protective device,Protective device includes the protection mounting plate that mounting base both ends are arranged in,The both ends of protection mounting plate are provided with support frame,Protection mounting rod is connected between two support frame upper ends,Reflector plate is provided on protection mounting rod,Light emitters and light receiver are respectively arranged on two protection mounting rods,It can be avoided and bump against article during multimedia touching screen is conditioned,Safety guarantee is provided for multimedia touching screen,Simultaneously protective device can be withdrawn after the completion of multimedia touching screen lift adjustment,To avoid influencing the operation of multimedia touching screen.
Description
Technical field
The present invention relates to touch screen technology field, specially a kind of lifting regulating mechanism of multimedia touching screen.
Background technique
Multimedia system is applied to the every field of human lives already, large scale touch display screen real estate industry,
The application in the fields such as financial institution, urban planning, engineering design, military exercise commander, large-scale exhibition and exhibition is also increasingly wider
It is general.There are mainly two types of the common arrangements of large scale touch display screen：First is that being horizontally placed on table top or desktop, second is that hanging down
Directly it is set on wall or other carriers, the position of touch display screen is mostly relatively fixed in both arrangements at present, though
It is so also angled can to meet well various application occasions or field in the touch display screen product of a small range adjusting
The demand of scape.Therefore, it is the application field for widening multimedia touching screen, enhances its adaptation under various application occasions or scene
Property, a kind of multimedia touching screen lifting regulating mechanism is designed, under the premise of meeting ergonomic demands, to realize touch screen
The adjustable function of angle and height is very necessary.
There is some defects for existing multimedia touching screen lifting regulating mechanism, such as without reference to protective device, if
There are articles above multimedia touching screen, when being adjusted up multimedia touching screen may when multimedia touching screen knock object
Product may cause multimedia touching screen fragmentation, therefore there is security risks.
Summary of the invention
In order to overcome the shortcomings of prior art, the present invention, which provides one kind and can be avoided multimedia touching screen, to be conditioned
Article is bumped against in journey, provides safety guarantee for multimedia touching screen, while can receive after the completion of multimedia touching screen lift adjustment
Go back on defense protection unit, thus avoid influencing the lifting regulating mechanism of the multimedia touching screen of multimedia touching screen operation, it can be effective
Solve the problems, such as that background technique proposes.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of lifting regulating mechanism of multimedia touching screen, including lifting pedestal are provided with lifting on the lifting pedestal
Cylinder, is provided with lifting cylinder in the lifting tube, and the output end of the lifting cylinder straight up and is connected with lifting column, described
Lifting column slides up and down in lifting tube, and the upper end of the lifting column extends lifting tube and is connected with horizontal mounting base, more
Media touch screen is fixed in the mounting base；
The both ends of the mounting base are provided with protective device, and the protective device includes the protection that mounting base both ends are arranged in
The both ends of mounting plate, the protection mounting plate are provided with support frame, and protection peace is connected between support frame upper end described in two
Bar is filled, reflector plate is provided on the protection mounting rod, is respectively arranged with light emitters on protection mounting rod described in two
And light receiver.
Further, the reflector plate on two protection mounting rods is oppositely arranged, the light emitters and light receiver
It is located on two opposite turnings of mounting base, while the light that the light emitters are issued is on two reflector plates
It is injected in light receiver after returning reflection.
A kind of lifting regulating mechanism of multimedia touching screen according to claim, it is characterised in that：The lifting
It is provided with limition orientation slide plate on the inner wall of cylinder, the side of the lifting column is provided with limition orientation sliding slot, the limition orientation
In the insertion limition orientation sliding slot of slide plate.
Further, recyclable device is provided in the mounting base, the recyclable device includes being arranged at mounting base both ends
Recycling seat, be provided with accumulator tank on the recycling seat, the slot bottom both ends of the accumulator tank are provided with recycling cylinder, the recycling
The output end of cylinder straight up, and is connected with recycling fixed plate between the output end of two recycling cylinders, the protection installation
Plate setting is in recycling fixed plate.
Further, the lower end surface of the mounting base is provided with control device, and the control device includes middle control chip, institute
It states middle control chip to be electrical connected with light receiver, the middle control chip is connected with lifting cylinder controller and recycling cylinder control
Device.
Further, the lifting cylinder controller is fixed on outside lifting tube, the lifting cylinder controller and lifting
Cylinder is connected and controls its running, and the recycling cylinder controller is mounted in accumulator tank, the recycling cylinder controller with return
Getter cylinder is connected and controls its running.
Further, crash bar, the upper surface of the protection mounting rod are arranged in parallel with above the protection mounting rod
It is provided with pressure sensor, several buffer springs are provided between the pressure sensor and crash bar.
Further, the both ends of the crash bar lower end surface are provided with guiding trestle, are provided on the protection mounting rod
It is oriented to jack, the lower end insertion of the guiding trestle is oriented in jack.
Further, it is provided with guide sleeve between the guiding trestle and guiding jack, the guide sleeve is fixed on
It protects on mounting rod.
Further, the upper surface of the crash bar is provided with elastic buffering pad made of rubber.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) of the invention by the way that protective device is arranged, light emitters and light receiver in protective device can be
The top of multimedia touching screen forms a piece of light curtain, if there are objects above multimedia touching screen, when lifting regulating mechanism drives
It moves to light curtain on dynamic multimedia touching screen and when object contacts, object will separate light curtain, receive light receiver can not
Optical signal, lifting regulating mechanism will stop operating, and multimedia touching screen is avoided to bump against article, to mention for multimedia touching screen
For safety guarantee；
(2) protective device its height in running can be higher than multimedia touching screen in the present invention, by the way that recyclable device is arranged,
Recyclable device can take in protective device in accumulator tank after the completion of multimedia touching screen lift adjustment, so as to avoid preventing
The operation of protection unit influence multimedia touching screen.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of protective device of the present invention；
Fig. 3 is the side structure schematic view of protective device of the present invention；
Fig. 4 is the connection relationship diagram of control device of the present invention.
Figure label：
1- lifting pedestal；2- protective device；3- recyclable device；4- control device；
101- lifting tube；102- lifting cylinder；103- lifting column；104- mounting base；105- limition orientation slide plate；106- limit
Position guide chute；
201- protects mounting plate；202- support frame；203- protects mounting rod；204- reflector plate；205- light emitters；
206- light receiver；207- crash bar；208- pressure sensor；209- buffer spring；210- guiding trestle；211- guiding is inserted
Hole；212- guide sleeve；213- elastic buffering pad；
301- recycles seat；302- accumulator tank；303- recycles cylinder；304- recycles fixed plate；
Chip is controlled in 401-；402- lifting cylinder controller；403- recycles cylinder controller.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figures 1 to 4, the present invention provides a kind of lifting regulating mechanisms of multimedia touching screen, including lifting bottom
Seat 1 is provided with lifting tube 101 on the lifting pedestal 1, lifting cylinder 102, the lifting is provided in the lifting tube 101
The output end of cylinder 102 straight up and is connected with lifting column 103, and the lifting column 103 slides up and down in lifting tube 101,
Limition orientation slide plate 105 is provided on the inner wall of the lifting tube 101, the side of the lifting column 103 is provided with limition orientation
Sliding slot 106, in the insertion limition orientation sliding slot 106 of the limition orientation slide plate 105, the upper end of the lifting column 103 is extended
Lifting tube 101 and it is connected with horizontal mounting base 104, multimedia touching screen is fixed in the mounting base 104.
In the present invention, the running of lifting cylinder 102 will drive multimedia touching screen lifting, and then realizes and touch to multimedia
Touch the lift adjustment of screen.When the output end of lifting cylinder 102 stretches out, lifting column 103 will drive upward in lifting tube 101
Sliding, due to the presence of limition orientation slide plate 105 and limition orientation sliding slot 106, the moving direction of lifting column 103 is defined, together
When limit blade fin 105 and limition orientation sliding slot 106 can provide guiding role for the movement of lifting column 103.With lifting
The rising of column 103, the mounting base 104 of 103 upper end of lifting column is set and the multimedia touching screen that is fixed in mounting base 104 all
It can rise, and when the output end of lifting cylinder 102 retraction, the operation and the above process of lifting regulating mechanism are on the contrary, meeting
Move downward multimedia touching screen.In summary two kinds of operating modes, the operating mode by controlling lifting cylinder 102 are
Multimedia touching screen can be driven to go up and down, realize the lift adjustment to multimedia touching screen.
As shown in Figure 1, Figure 2 and Figure 3, in the present invention, the both ends of the mounting base 104 are provided with protective device 2, described
Protective device 2 includes the protection mounting plate 201 that 104 both ends of mounting base are arranged in, and the both ends of the protection mounting plate 201 are provided with
Support frame 202, is connected with protection mounting rod 203 between 202 upper end of support frame described in two, on the protection mounting rod 203
It is provided with reflector plate 204, is respectively arranged with light emitters 205 and light receiver on protection mounting rod 203 described in two
206, two are protected the reflector plate 204 on mounting rods 203 to be oppositely arranged.
In protective device 2 of the invention, the light emitters 205 and light receiver 206 are located at mounting base
On 104 two opposite turnings, while the light that the light emitters 205 are issued is anti-back and forth on two reflector plates 204
It is injected in light receiver 206 after penetrating, the light between light emitters 205 and light receiver 206 is in the upper of mounting base 104
Side that is to say that the top of multimedia touching screen forms roundtrip, by the way that light emitters 205 and light receiver are arranged in advance
206 tilt angle, light can be made, which to constitute a piece of light curtain, will make light once there are objects above multimedia touching screen
Curtain disconnects.
In the present invention, when the running of lifting cylinder 102, which that is to say, carries out lift adjustment to multimedia touching screen, protection dress
Set 2 start-up operations.Normal condition that is to say the top of multimedia touching screen there is no in the case where object, light receiver
206 can receive light always.If there are objects above multimedia touching screen, and the object is from multimedia touching screen
In the case where close, which can separate light curtain, make light receiver 206 that can not receive light, and lifting regulating mechanism will
Making a response makes the stopping of lifting cylinder 102 push up multimedia touching screen, prevents multimedia touching screen from knocking object, to protect
Protect multimedia touching screen.
As shown in Figures 2 and 3, in the present invention, the top of the protection mounting rod 203 is arranged in parallel with crash bar 207,
The upper surface of the protection mounting rod 203 is provided with pressure sensor 208, between the pressure sensor 208 and crash bar 207
Several buffer springs 209 are provided with, the both ends of 207 lower end surface of crash bar are provided with guiding trestle 210, the protection installation
Guiding jack 211 is provided on bar 203, the lower end insertion of the guiding trestle 210 is oriented in jack 211, the guiding trestle
Guide sleeve 212 is provided between 210 and guiding jack 211, the guide sleeve 212 is fixed on protection mounting rod 203, institute
The upper surface for stating crash bar 207 is provided with elastic buffering pad 213 made of rubber.
In the present invention, the surface that protective device 2 can detecte multimedia touching screen whether there is article, but can not
The top of protection mounting rod 203 is detected with the presence or absence of article, if the top of protection mounting rod 203 protects installation there are article
Bar 203 still moves upwards, then can make protect mounting rod 203 knock article, have can make very much the structure of protective device 2 by
It destroys, while the safety of multimedia touching screen may be threatened.The present invention can be to avoid protection installation by setting crash bar 207
Bar 203 is impaired, to keep the overall structure of protective device 2 injury-free.
It is worth noting that the present invention is by being arranged elastic buffering pad 213 in the upper end of crash bar 207, it can be to avoid anti-
It is impaired to protect mounting rod 203.Simultaneously because being provided with several buffer springs 209 between pressure sensor 208 and crash bar 207, prevent
Lance 207 can push buffer spring 209 under the effect of gravity, make 208 stress of pressure sensor, if on crash bar 207
End strikes article, then 208 stress of pressure sensor can be made to increase, so being by detecting 208 stress condition of pressure sensor
It can analyze whether crash bar 207 has hit article, after crash bar 207 strikes article, lifting regulating mechanism will be made instead
The stopping of lifting cylinder 102 should be made to push up multimedia touching screen and crash bar 207, to protect multimedia touching screen and protection
Device 2.
As depicted in figs. 1 and 2, in the present invention, recyclable device 3, the recyclable device are provided in the mounting base 104
3 include the recycling seat 301 that 104 both ends of mounting base are arranged in, and is provided with accumulator tank 302, the accumulator tank on the recycling seat 301
302 slot bottom both ends are provided with recycling cylinder 303, the output end of the recycling cylinder 303 straight up, and two recycling cylinders
Recycling fixed plate 304 is connected between 303 output end, the setting of protection mounting plate 201 is in recycling fixed plate 304.
In the present invention, the setting of protective device 2, when protective device 2 works, recycles cylinder in recycling fixed plate 304
303 output recycles fixed plate 304 at this time and flushes with the upper surface of mounting base 104, so protective device in the state of stretching
2 top in multimedia touching screen.Under this kind of state, protective device 2 may influence whether multimedia touching screen just
It is often used.In order to avoid the generation of above situation, the present invention is arranged for recyclable device 3.
In recyclable device 3, the output end of recycling cylinder 303 will push recycling fixed plate 304 and move upwards when stretching out, and make
Protective device 2 rises, and light emitters 205 and the height of light receiver 206 is finally made to be greater than the height of multimedia touching screen,
So as to form light curtain, enable 2 normal operation of protective device.And when recycling the output end retraction of cylinder 303, it will drive
Fixed plate 304 and 2 downlink of protective device are recycled, falls in protective device 2 in accumulator tank 302, lift adjustment machine entire in this way
The top surface of structure is plane where multimedia touching screen, so as to avoid protective device 2 from influencing the operation of multimedia touching screen.
As shown in Figure 1, Figure 2 and Figure 4, in the present invention, the lower end surface of the mounting base 104 is provided with control device 4, institute
Stating control device 4 includes middle control chip 401, and the middle control chip 401 is electrical connected with light receiver 203, the middle control core
Piece 401 is connected with lifting cylinder controller 402 and recycling cylinder controller 403, and the lifting cylinder controller 402 is fixed on liter
It drops outside cylinder 101, the lifting cylinder controller 402 is connected with lifting cylinder 102 and controls its running, the recycling cylinder control
Device 403 processed is mounted in accumulator tank 302, and the recycling cylinder controller 403 is connected with recycling cylinder 303 and controls its running.
In the present invention, control device 4 is the control system of the entire lifting regulating mechanism running of control.Light receiver
203 are electrical connected with middle control chip 401, so that whether the top that middle control chip 401 can detect multimedia touching screen constantly deposits
In article, and then adjusting multimedia touching screen can be continued up at judgement.The stretching of lifting cylinder 102 simultaneously and retraction, fortune
Row runs with stopping, protective device 2 and recyclable device 3 and stops also being controlled by middle control chip 401.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (10)
1. a kind of lifting regulating mechanism of multimedia touching screen, it is characterised in that：Including lifting pedestal (1), the lifting pedestal
(1) it is provided with lifting tube (101), is provided with lifting cylinder (102) in the lifting tube (101), the lifting cylinder (102) on
Output end straight up and be connected with lifting column (103), the lifting column (103) slides up and down in lifting tube (101), institute
The upper end for stating lifting column (103) is extended lifting tube (101) and is connected with horizontal mounting base (104), and multimedia touching screen is solid
It is scheduled on the mounting base (104)；
The both ends of the mounting base (104) are provided with protective device (2), and the protective device (2) includes being arranged in mounting base
(104) both ends of the protection mounting plate (201) at both ends, protection mounting plate (201) are provided with support frame (202), two institutes
It is connected with protection mounting rod (203) between support frame (202) upper end stated, is provided with reflection on the protection mounting rod (203)
Piece (204) is respectively arranged with light emitters (205) and light receiver on protection mounting rod (203) described in two
(206)。
2. a kind of lifting regulating mechanism of multimedia touching screen according to claim 1, it is characterised in that：Two protection peaces
Reflector plate (204) on dress bar (203) is oppositely arranged, and the light emitters (205) and light receiver (206) are located at
On two opposite turnings of mounting base (104), while the light that the light emitters (205) are issued is in two reflector plates
(204) it is injected in light receiver (206) after roundtrip on.
3. a kind of lifting regulating mechanism of multimedia touching screen according to claim 1, it is characterised in that：The lifting tube
(101) it is provided on inner wall limition orientation slide plate (105), the side of the lifting column (103) is provided with limition orientation sliding slot
(106), in the insertion limition orientation sliding slot (106) of the limition orientation slide plate (105).
4. a kind of lifting regulating mechanism of multimedia touching screen according to claim 1, it is characterised in that：The mounting base
(104) it is provided on recyclable device (3), the recyclable device (3) includes recycling seat of the setting at mounting base (104) both ends
(301), it is provided with accumulator tank (302) on the recycling seat (301), the slot bottom both ends of the accumulator tank (302) are provided with recycling
Cylinder (303), the output end of recycling cylinder (303) straight up, and connect between the output end of two recycling cylinder (303)
It is connected to recycling fixed plate (304), protection mounting plate (201) setting is in recycling fixed plate (304).
5. a kind of lifting regulating mechanism of multimedia touching screen according to claim 1, it is characterised in that：The mounting base
(104) lower end surface is provided with control device (4), and the control device (4) includes middle control chip (401), the middle control chip
(401) it is electrical connected with light receiver (203), the middle control chip (401) is connected with lifting cylinder controller (402) and returns
It receives cylinder controller (403).
6. a kind of lifting regulating mechanism of multimedia touching screen according to claim 5, it is characterised in that：The lifting air
Cylinder controller (402) is fixed on lifting tube (101) outside, and the lifting cylinder controller (402) is connected with lifting cylinder (102)
And its running is controlled, the recycling cylinder controller (403) is mounted in accumulator tank (302), the recycling cylinder controller
(403) it is connected with recycling cylinder (303) and controls its running.
7. a kind of lifting regulating mechanism of multimedia touching screen according to claim 1, it is characterised in that：The protection peace
It is arranged in parallel with crash bar (207) above dress bar (203), the upper surface of protection mounting rod (203) is provided with pressure biography
Sensor (208) is provided with several buffer springs (209) between the pressure sensor (208) and crash bar (207).
8. a kind of lifting regulating mechanism of multimedia touching screen according to claim 7, it is characterised in that：The crash bar
(207) both ends of lower end surface are provided with guiding trestle (210), are provided with guiding jack on the protection mounting rod (203)
(211), in lower end insertion guiding jack (211) of the guiding trestle (210).
9. a kind of lifting regulating mechanism of multimedia touching screen according to claim 8, it is characterised in that：The guiding branch
It is provided with guide sleeve (212) between frame (210) and guiding jack (211), the guide sleeve (212) is fixed on protection installation
On bar (203).
10. a kind of lifting regulating mechanism of multimedia touching screen according to claim 7, it is characterised in that：The anticollision
The upper surface of bar (207) is provided with elastic buffering pad made of rubber (213).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810709358.XA CN108847129A (en) | 2018-07-02 | 2018-07-02 | A kind of lifting regulating mechanism of multimedia touching screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810709358.XA CN108847129A (en) | 2018-07-02 | 2018-07-02 | A kind of lifting regulating mechanism of multimedia touching screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108847129A true CN108847129A (en) | 2018-11-20 |
Family
ID=64200061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810709358.XA Withdrawn CN108847129A (en) | 2018-07-02 | 2018-07-02 | A kind of lifting regulating mechanism of multimedia touching screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108847129A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6204777B1 (en) * | 1999-06-15 | 2001-03-20 | Whelen Engineering Company, Inc. | Portable illuminated warning sign |
| CN201160647Y (en) * | 2007-11-26 | 2008-12-10 | 刘必宗 | Lift television rack with safety device |
| US20090278008A1 (en) * | 2008-05-08 | 2009-11-12 | Samsung Electronics Co., Ltd. | Lifting device of a display apparatus |
| CN104061422A (en) * | 2013-03-22 | 2014-09-24 | 昆山泓杰电子有限公司 | Safe electric floor type television set frame |
| CN206441375U (en) * | 2017-01-17 | 2017-08-25 | 黄珏群 | A kind of device for displaying information for international trade practice-training teaching |
| CN206829024U (en) * | 2017-05-12 | 2018-01-02 | 陈涛 | A kind of flexible safety protective guard for highway |
| CN207182745U (en) * | 2017-07-11 | 2018-04-03 | 商丘师范学院 | A kind of teacher's physical simulating device |
-
2018
- 2018-07-02 CN CN201810709358.XA patent/CN108847129A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6204777B1 (en) * | 1999-06-15 | 2001-03-20 | Whelen Engineering Company, Inc. | Portable illuminated warning sign |
| CN201160647Y (en) * | 2007-11-26 | 2008-12-10 | 刘必宗 | Lift television rack with safety device |
| US20090278008A1 (en) * | 2008-05-08 | 2009-11-12 | Samsung Electronics Co., Ltd. | Lifting device of a display apparatus |
| CN104061422A (en) * | 2013-03-22 | 2014-09-24 | 昆山泓杰电子有限公司 | Safe electric floor type television set frame |
| CN206441375U (en) * | 2017-01-17 | 2017-08-25 | 黄珏群 | A kind of device for displaying information for international trade practice-training teaching |
| CN206829024U (en) * | 2017-05-12 | 2018-01-02 | 陈涛 | A kind of flexible safety protective guard for highway |
| CN207182745U (en) * | 2017-07-11 | 2018-04-03 | 商丘师范学院 | A kind of teacher's physical simulating device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181120 |