CN109686192B - Economic management teaching demonstration teaching aid - Google Patents
Economic management teaching demonstration teaching aid Download PDFInfo
- Publication number
- CN109686192B CN109686192B CN201910115295.XA CN201910115295A CN109686192B CN 109686192 B CN109686192 B CN 109686192B CN 201910115295 A CN201910115295 A CN 201910115295A CN 109686192 B CN109686192 B CN 109686192B
- Authority
- CN
- China
- Prior art keywords
- plate
- rotating
- board
- limiting
- wedge block
- 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
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
- G09B19/18—Book-keeping or economics
Landscapes
- Business, Economics & Management (AREA)
- Entrepreneurship & Innovation (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Economics (AREA)
- General Business, Economics & Management (AREA)
- Development Economics (AREA)
- Accounting & Taxation (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Toys (AREA)
Abstract
The invention discloses an economic management teaching demonstration teaching aid which comprises a main board for teaching and a bottom board for supporting, wherein the main board is rotatably connected and arranged at the upper end of the bottom board through a rotating assembly and a limiting assembly, the limiting assembly is rotatably supported through multiple gears and is used for limiting and adjusting the main board, grooves are symmetrically embedded in two sides of the lower end of the bottom board, and an anti-skidding positioning mechanism is connected and arranged in the grooves. The movable limiting effect can be formed by rotating the limiting component, so that teaching display at multiple angles can be facilitated; the movable sliding block can drive the telescopic rod and the wedge block to move, the wedge block can be continuously clamped between teeth of the rack when moving to the side edge, the rotating plate is pushed to rotate, and therefore a rubber pad at the lower end of the rotating plate can gradually contact with the ground, and the sliding can be prevented through the rubber pad and the ground through movable adjustment.
Description
Technical Field
The invention relates to a teaching aid, in particular to an economic management teaching demonstration teaching aid.
Background
The economic management is mainly researched by taking major management problems in the economic field as main objects, and has obvious management research characteristics based on economics; focus on the first-level discipline of industrial and commercial management and its closely related public (economic) management aspects, and focus on the academic level embodying the research of industrial and commercial management in china.
With the deep innovation of the Chinese social economic system, the pace of meeting international practice is continuously accelerated after WTO is added, the importance of project management is recognized by more and more Chinese enterprises and organizations, and enterprise decision makers begin to recognize that the blindness of projects can be greatly reduced by applying project management knowledge, tools and technologies, and huge losses caused by various errors in the projects are reduced. And those who have good project management education and practical experience have long been the subject of pursuit by force companies.
Among the prior art, among economic management's the teaching, the mobilizable demonstration teaching aid structure of the majority is simple relatively, and the primary function only can write by hand or paste some simple charts, and is convenient inadequately when the show, and settling stability remains to be improved.
Disclosure of Invention
The invention aims to provide an economic management teaching demonstration teaching aid to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an economic management teaching demonstration teaching aid, is including the mainboard that is used for the teaching and the bottom plate that is used for supporting, the mainboard passes through runner assembly and spacing subassembly and rotates the connection setting in the bottom plate upper end, spacing subassembly rotates through many gears and supports and spacing regulation the mainboard, bottom plate lower extreme bilateral symmetry embedding is provided with the recess, the connection is provided with anti-skidding positioning mechanism in the recess.
As a further scheme of the invention: the main board is formed by connecting a board body and a base plate, the front surface of the board body is embedded with a writing board, the writing board is formed by coating green paint on the surface of an iron-based thin plate, and a bar chart, a pie chart and magnetic attraction are distributed on the writing board, so that teaching is facilitated; the upper end of the writing board is horizontally provided with an LED lamp for illumination; the novel cloth curtain is characterized in that circular rings are symmetrically welded to the two sides of the lower end of the plate body and are semicircular metal rings, the lower end of each circular ring is fixedly welded to the plate body, a cloth curtain is connected and arranged at the upper end of the plate body, the cloth curtain is rotationally arranged on the periphery of a rotating shaft at the upper end of the plate body in a winding mode, and hooks corresponding to the circular rings are symmetrically arranged on the two sides of the lower end of the cloth curtain.
As a further scheme of the invention: the lower end of the base plate is connected with a rotating assembly, the rotating assembly is composed of steel balls which are annularly embedded and distributed at the lower end of the base plate and a rolling track which is annularly arranged at the upper end of the bottom plate, the steel balls are rotatably connected at the lower end of the base plate, the rolling track is located below the steel balls, the rolling track is of an annular structure, and a circular ring recess for rolling the steel balls is formed in the upper end of the rolling track.
As a further scheme of the invention: the middle part of the lower end of the base plate is also connected with the bottom plate and provided with a limiting assembly, the limiting assembly consists of a rotating sleeve, a rotating rod, a blind hole, a compression spring and a limiting rod, and the rotating sleeve consists of a ring sleeve welded and fixed at the lower end of the base plate and a round rod welded and fixed at the upper end of the bottom plate which are rotationally connected through a bearing; dwang welded fastening is in ring cover periphery, angular distribution such as dwang annular is provided with four groups, the bottom plate upper end with it is provided with twenty blind holes of group to rotate the cover to distribute for the centre of a circle, the bottom is provided with the gag lever post through compression spring elastic connection in the blind hole, the gag lever post upper end is half spherical, just the gag lever post upper end with dwang activity laminating, the dwang activity joint is adjacent two sets of between the gag lever post.
As a further scheme of the invention: the anti-skid positioning mechanism consists of sliding grooves which are symmetrically and horizontally arranged at the front side and the rear side in the groove, sliding blocks which are arranged between the sliding grooves in a sliding connection mode, wedge blocks which are elastically connected to the lower end of the sliding blocks through telescopic rods, and racks which are rotatably connected to the lower end of the groove and are embedded with rotating plates on the side edges, the sliding grooves penetrate through the front side and the rear side of the bottom plate, and the two ends of the sliding blocks symmetrically extend out of the front side and the rear side of; a spring is connected between the lower end of the sliding block and the wedge block, and the wedge block is triangular; the novel wedge block turning device is characterized in that the turning plate is a fan-shaped plate, a rubber pad is further embedded at the lower end of the turning plate, the turning plate is rotatably connected with the lower end of the groove through a torsion spring, the turning plate and the rack are arranged on the side edge, opposite to the wedge block, of the turning plate, and the rack is movably clamped with the wedge block.
Compared with the prior art, the invention has the beneficial effects that: when the multifunctional writing board is used, writing can be carried out on the writing board, chart analysis can be carried out through a column chart and a pie chart, paper materials are fixed through magnetic attraction and are convenient to watch through illumination of the LED lamp, and the cloth curtain can be pulled down and connected and fixed through the hook and the circular ring when multimedia is required to be matched; when the two parts of the rotating sleeve rotate relatively, the rotating rod rotates continuously and extrudes the limiting rods to compress the compression springs, and the rotating rod stops rotating, so that the adjacent limiting rods can clamp the rotating rod, thereby forming a movable limiting effect, and facilitating teaching display at multiple angles; when the main board is rotated, the steel balls on the two sides are matched with the rolling track, so that the rotation stability can be improved; through the universal wheel of bottom plate lower extreme can the mobile device, when reacing the assigned position, move the sliding block and can drive telescopic link and voussoir removal in the bottom plate front side, the voussoir is when moving to the side, can constantly the joint between the tooth of rack, will promote the rotor plate like this and rotate to the rubber pad of rotor plate lower extreme can contact with ground gradually, can the movable adjustment like this in order to prevent to slide through rubber pad and ground contact.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment 1 of an economic management teaching demonstration teaching aid.
FIG. 2 is a schematic structural diagram of a limiting component in an economic management teaching demonstration teaching aid.
FIG. 3 is a schematic structural diagram of an embodiment 2 of an economic management teaching demonstration teaching aid.
Fig. 4 is an enlarged schematic view of region a in example 2.
In the figure: 1-plate body, 2-writing board, 3-backing plate, 4-rotating sleeve, 5-bottom plate, 6-steel ball, 7-rolling track, 8-rotating rod, 9-blind hole, 10-compression spring, 11-limiting rod, 12-LED lamp, 13-circular ring, 14-cloth curtain, 15-bar chart, 16-pie chart, 17-magnetic attraction, 18-groove, 19-sliding groove, 20-sliding block, 21-telescopic rod, 22-wedge block, 23-rotating plate and 24-rack.
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.
Example 1
Referring to fig. 1-2, in an embodiment of the present invention, an economic management teaching demonstration teaching aid includes a main board for teaching and a bottom board 5 for supporting, the main board is rotatably connected to the upper end of the bottom board 5 through a rotating component and a limiting component, and the limiting component rotatably supports and limits and adjusts the main board through multiple gears.
The main board is formed by connecting a board body 1 and a base plate 3, a writing board 2 is embedded in the front of the board body 1, the writing board 2 is formed by coating green paint on the surface of an iron-based thin plate, and a bar chart 15, a pie chart 16 and a magnet 17 are distributed on the writing board 2, so that teaching is facilitated; the LED lamp 12 is horizontally arranged at the upper end of the writing board 2 and used for illumination; the plate body 1 lower extreme bilateral symmetry welding is provided with ring 13, ring 13 is semi-circular becket, ring 13 lower extreme with plate body 1 welded fastening, plate body 1 upper end is connected and is provided with cloth curtain 14, cloth curtain 14 lap joint rotate set up in the pivot periphery of plate body 1 upper end, cloth curtain 14 lower extreme bilateral symmetry be equipped with the couple that ring 13 corresponds.
The lower end of the backing plate 3 is connected with a rotating assembly, the rotating assembly is composed of steel balls 6 which are embedded into the lower end of the backing plate 3 in an annular mode and rolling rails 7 which are arranged on the upper end of the bottom plate 5 in an annular mode, the steel balls 6 are connected to the lower end of the backing plate 3 in a rotating mode, the rolling rails 7 are located below the steel balls 6, the rolling rails 7 are of annular structures, and circular ring depressions used for rolling the steel balls 6 are formed in the upper ends of the rolling rails 7.
A limiting component is connected between the middle part of the lower end of the base plate 3 and the bottom plate 5, the limiting component consists of a rotating sleeve 4, a rotating rod 8, a blind hole 9, a compression spring 10 and a limiting rod 11, and the rotating sleeve 4 is formed by a ring sleeve welded and fixed at the lower end of the base plate 3 and a round rod welded and fixed at the upper end of the bottom plate 5 which are connected in a rotating mode through a bearing; dwang 8 welded fastening is in the ring cover periphery, angular distribution such as dwang 8 annular is provided with four groups, 5 upper ends of bottom plate with the rotating sleeve 4 distributes for the centre of a circle and is provided with twenty blind holes 9 of organizing, the bottom is provided with gag lever post 11 through compression spring 10 elastic connection in blind hole 9, gag lever post 11 upper end is the hemisphere, just 11 upper ends of gag lever post with dwang 8 activity laminating, dwang 8 activity joint is adjacent two sets of between the gag lever post 11. Can be when rotating cover 4 two parts relative rotations like this, dwang 8 constantly rotates and extrudes 11 compression springs 10 of gag lever post, and the dwang 8 stops rotating, and then adjacent gag lever post 11 can block dwang 8 to form the spacing effect of activity.
The two sides of the lower end of the bottom plate 5 are symmetrically provided with universal wheels in a connecting mode.
Example 2
Referring to fig. 3 to 4, in the embodiment of the invention, based on embodiment 1, grooves 18 are symmetrically embedded in two sides of the lower end of the bottom plate 5, and an anti-skid positioning mechanism is connected and arranged in the grooves 18.
The anti-skid positioning mechanism is composed of sliding grooves 19 which are symmetrically and horizontally arranged on the front side and the rear side in the groove 18, sliding blocks 20 which are arranged between the sliding grooves 19 in a sliding connection mode, wedge blocks 22 which are elastically connected to the lower end of the sliding blocks 20 through telescopic rods 21, and racks 24 which are rotatably connected to the lower end of the groove 18 and are embedded with rotating plates 23 on the side edges, the sliding grooves 19 penetrate through the front side and the rear side of the bottom plate 5, and two ends of the sliding blocks 20 symmetrically extend out of the front side and the rear side of the; a spring is connected between the lower end of the sliding block 20 and the wedge block 22, and the wedge block 22 is triangular prism-shaped; the rotating plate 23 is a fan-shaped plate, a rubber pad is further embedded at the lower end of the rotating plate 23, the rotating plate 23 is rotatably connected with the lower end of the groove 18 through a torsion spring, the rotating plate 23 and the rack 24 are arranged on the rotating plate 23 and on the side opposite to the wedge block 22, and the rack 24 and the wedge block 22 are movably clamped. Thus, the sliding block 20 can drive the telescopic rod 21 and the wedge 22 to move in front of the bottom plate 5, the wedge 22 can be continuously clamped between the teeth of the rack 24 while moving to the side, the rotating plate 23 is pushed to rotate, and the rubber pad at the lower end of the rotating plate 23 can be gradually contacted with the ground, so that the sliding can be prevented by movably adjusting the sliding block through the rubber pad and the ground.
The working principle of the invention is as follows: when the writing board is used, writing can be carried out on the writing board 2, chart analysis can be carried out through a bar chart 15 and a pie chart 16, paper materials are attached and fixed through the magnetic attraction 17, the LED lamp 12 is used for lighting and convenient viewing, and the cloth curtain 14 can be pulled down and connected and fixed with the circular ring 13 through the hook when multimedia is required to be matched; when the two parts of the rotating sleeve 4 rotate relatively, the rotating rod 8 rotates continuously and extrudes the limiting rods 11 to compress the compression springs 10, and the rotating rod 8 stops rotating, so that the adjacent limiting rods 11 can clamp the rotating rod 8, thereby forming a movable limiting effect, and facilitating multi-angle teaching display; when the main board is rotated, the steel balls 6 on the two sides are matched with the rolling track 7, so that the rotation stability can be improved; can mobile device through the universal wheel of bottom plate 5 lower extreme, when reacing the assigned position, move sliding block 20 and can drive telescopic link 21 and voussoir 22 removal in bottom plate 5 front side, voussoir 22 is when moving to the side, can constantly the joint between the tooth of rack 24, will promote rotor plate 23 like this and rotate to the rubber pad of rotor plate 23 lower extreme can contact with ground gradually, can the movable adjustment like this in order to prevent to slide through rubber pad and ground contact.
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.
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.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. The economic management teaching demonstration teaching aid comprises a main board for teaching and a bottom board (5) for supporting, and is characterized in that the main board is rotatably connected and arranged at the upper end of the bottom board (5) through a rotating assembly and a limiting assembly, the limiting assembly is rotatably supported and limited and adjusted through multiple gears, grooves (18) are symmetrically embedded in two sides of the lower end of the bottom board (5), an anti-skidding positioning mechanism is connected and arranged in the grooves (18), the main board is formed by connecting a board body (1) and a base plate (3), and a writing board (2) is embedded in the front of the board body (1); the two sides of the lower end of the plate body (1) are symmetrically welded with circular rings (13), the circular rings (13) are semicircular metal rings, and the lower ends of the circular rings (13) are welded and fixed with the plate body (1); the upper end of the plate body (1) is connected with a cloth curtain (14), the cloth curtain (14) is wound and connected on the periphery of a rotating shaft which is rotatably arranged at the upper end of the plate body (1), hooks corresponding to the circular rings (13) are symmetrically arranged on two sides of the lower end of the cloth curtain (14), a limiting component is also connected and arranged between the middle part of the lower end of the backing plate (3) and the bottom plate (5), the limiting component consists of a rotating sleeve (4), a rotating rod (8), a blind hole (9), a compression spring (10) and a limiting rod (11), and the rotating sleeve (4) consists of a ring sleeve which is fixedly welded at the lower end of the backing plate (3) and a circular rod which is fixedly welded at the upper end of the bottom plate; dwang (8) welded fastening is in the ring cover is peripheral, angular distribution such as dwang (8) annular is provided with four groups, bottom plate (5) upper end with it is provided with twenty blind holes (9) of organizing to rotate cover (4) and distribute for the centre of a circle, the bottom is provided with gag lever post (11) through compression spring (10) elastic connection in blind hole (9), gag lever post (11) upper end is the semicircle sphere, just gag lever post (11) upper end with dwang (8) activity laminating, dwang (8) activity joint is adjacent two sets of between gag lever post (11).
2. The economic management teaching demonstration teaching aid according to claim 1, wherein the tablet (2) is formed by coating green paint on the surface of an iron-based thin plate, and a bar chart (15), a pie chart (16) and a magnet (17) are distributed on the tablet (2); the upper end of the writing board (2) is horizontally provided with an LED lamp (12).
3. The economic management teaching demonstration teaching aid of claim 1, characterized in that the lower end of the backing plate (3) is connected and provided with a rotating assembly, the rotating assembly is composed of steel balls (6) which are annularly embedded and distributed at the lower end of the backing plate (3) and a rolling track (7) which is annularly arranged at the upper end of a bottom plate (5), the steel balls (6) are rotatably connected at the lower end of the backing plate (3), the rolling track (7) is located below the steel balls (6), the rolling track (7) is of an annular structure, and the upper end of the rolling track (7) is provided with an annular recess for rolling of the steel balls (6).
4. The economic management teaching demonstration teaching aid according to claim 1, wherein the anti-skid positioning mechanism is composed of sliding grooves (19) which are symmetrically and horizontally arranged at the front side and the rear side in the groove (18), sliding blocks (20) which are slidably connected and arranged between the sliding grooves (19), wedge blocks (22) which are elastically connected to the lower end of the sliding blocks (20) through telescopic rods (21), and racks (24) which are rotatably connected to the lower end of the groove (18) and are embedded with rotating plates (23) at the side edges, the sliding grooves (19) penetrate through the front side and the rear side of the bottom plate (5), and two ends of the sliding blocks (20) symmetrically extend out of the front side and the rear side of the bottom plate (5); a spring is further connected between the lower end of the sliding block (20) and the wedge block (22), and the wedge block (22) is triangular prism-shaped; the novel wedge block is characterized in that the rotating plate (23) is a fan-shaped plate, a rubber pad is further embedded at the lower end of the rotating plate (23), the rotating plate (23) is rotatably connected with the lower end of the groove (18) through a torsion spring, the rotating plate (23) is arranged on the rotating plate (23) and on the side opposite to the wedge block (22) through a rack (24), and the rack (24) is movably clamped with the wedge block (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910115295.XA CN109686192B (en) | 2019-02-13 | 2019-02-13 | Economic management teaching demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910115295.XA CN109686192B (en) | 2019-02-13 | 2019-02-13 | Economic management teaching demonstration teaching aid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109686192A CN109686192A (en) | 2019-04-26 |
| CN109686192B true CN109686192B (en) | 2020-10-20 |
Family
ID=66195801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910115295.XA Expired - Fee Related CN109686192B (en) | 2019-02-13 | 2019-02-13 | Economic management teaching demonstration teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109686192B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488933B (en) * | 2019-07-31 | 2020-12-15 | 浙江工贸职业技术学院 | Computer hardware fixing device |
| CN111845165A (en) * | 2020-08-06 | 2020-10-30 | 日照职业技术学院 | Economic management is with portable teaching device |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE824594A (en) * | 1974-12-06 | 1975-07-22 | INFORMATION PROCESSING DEVICE | |
| US3952422A (en) * | 1974-11-15 | 1976-04-27 | Roberts Jr David B | Persistence test apparatus |
| EP0024997B1 (en) * | 1979-09-04 | 1983-02-09 | ETAT-FRANCAIS représenté par le Délégué Général pour l' Armement | Automatic feeding device for primer cartridges of a gun |
| US6684471B2 (en) * | 2002-06-26 | 2004-02-03 | Grant Jones | Door hinge pin remover tool |
| CN206460636U (en) * | 2017-02-07 | 2017-09-01 | 焦作大学 | A kind of new literature aided education exhibiting device |
| CN206480234U (en) * | 2017-02-28 | 2017-09-08 | 福州外语外贸学院 | A kind of Multi-functional English teaching board |
| CN107507490A (en) * | 2017-10-13 | 2017-12-22 | 洛阳师范学院 | A kind of electronic music teaching aid |
| CN207188655U (en) * | 2017-09-27 | 2018-04-06 | 天津久泽永坤机械科技有限公司 | A kind of rotary tapered wedge fixed mechanism |
| CN207217046U (en) * | 2017-05-08 | 2018-04-10 | 诸暨市东铭广告有限公司 | A kind of mobile advertising support |
| CN207460152U (en) * | 2017-10-17 | 2018-06-05 | 南宁职业技术学院 | A kind of portable cloud end communication equipment |
| CN208208232U (en) * | 2018-05-11 | 2018-12-07 | 王玲燕 | A kind of propaganda board that regulation performance for building is good |
| CN208418027U (en) * | 2018-06-04 | 2019-01-22 | 中浩紫云科技股份有限公司 | A kind of self-service quotation of printing |
| CN208469881U (en) * | 2018-05-15 | 2019-02-05 | 深圳康诚达电子有限公司 | A kind of damping transport device of large-scale aluminum electrolysis capacitor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335529B (en) * | 2018-03-05 | 2020-01-31 | 鲁修齐 | simple English word memory rotary disc |
-
2019
- 2019-02-13 CN CN201910115295.XA patent/CN109686192B/en not_active Expired - Fee Related
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3952422A (en) * | 1974-11-15 | 1976-04-27 | Roberts Jr David B | Persistence test apparatus |
| BE824594A (en) * | 1974-12-06 | 1975-07-22 | INFORMATION PROCESSING DEVICE | |
| EP0024997B1 (en) * | 1979-09-04 | 1983-02-09 | ETAT-FRANCAIS représenté par le Délégué Général pour l' Armement | Automatic feeding device for primer cartridges of a gun |
| US6684471B2 (en) * | 2002-06-26 | 2004-02-03 | Grant Jones | Door hinge pin remover tool |
| CN206460636U (en) * | 2017-02-07 | 2017-09-01 | 焦作大学 | A kind of new literature aided education exhibiting device |
| CN206480234U (en) * | 2017-02-28 | 2017-09-08 | 福州外语外贸学院 | A kind of Multi-functional English teaching board |
| CN207217046U (en) * | 2017-05-08 | 2018-04-10 | 诸暨市东铭广告有限公司 | A kind of mobile advertising support |
| CN207188655U (en) * | 2017-09-27 | 2018-04-06 | 天津久泽永坤机械科技有限公司 | A kind of rotary tapered wedge fixed mechanism |
| CN107507490A (en) * | 2017-10-13 | 2017-12-22 | 洛阳师范学院 | A kind of electronic music teaching aid |
| CN207460152U (en) * | 2017-10-17 | 2018-06-05 | 南宁职业技术学院 | A kind of portable cloud end communication equipment |
| CN208208232U (en) * | 2018-05-11 | 2018-12-07 | 王玲燕 | A kind of propaganda board that regulation performance for building is good |
| CN208469881U (en) * | 2018-05-15 | 2019-02-05 | 深圳康诚达电子有限公司 | A kind of damping transport device of large-scale aluminum electrolysis capacitor |
| CN208418027U (en) * | 2018-06-04 | 2019-01-22 | 中浩紫云科技股份有限公司 | A kind of self-service quotation of printing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109686192A (en) | 2019-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109686192B (en) | Economic management teaching demonstration teaching aid | |
| CN209864529U (en) | Orthopedics recovery rehabilitation training device | |
| CN210038285U (en) | Tool for clamp of lens | |
| CN110925551A (en) | But desk computer screen support of automatically regulated angle based on photo resistance | |
| CN107599688B (en) | Blackboard is adjusted in multi-angle | |
| CN206649821U (en) | A kind of education Graphic Panel of ideology and politics | |
| CN206489782U (en) | A kind of English teaching teaching aid | |
| CN206150830U (en) | Teaching is with artistic design drawing table | |
| CN206303463U (en) | A kind of architectural decoration article-storage device | |
| CN214847326U (en) | Financial specialty is economic curve and is illustrated board for study | |
| CN209983734U (en) | Drawing and drawing board frame for art design | |
| CN209947273U (en) | Globe for high school geography teaching | |
| CN206312080U (en) | A kind of computer teaching keyboard | |
| CN202272174U (en) | Damping aircraft rescue pavement transfer platform | |
| CN108132063B (en) | Supplementary device of settling of formula multimachine position cell-phone sways | |
| CN215226435U (en) | Exhibition frame with angle adjusting function | |
| CN211016170U (en) | A teaching sand table for education | |
| CN221200597U (en) | Psychological teaching show board convenient to move | |
| CN214663226U (en) | Adjustable new media monitoring center display stand | |
| CN214336040U (en) | Coding teaching board for computer software education | |
| CN111084965A (en) | Rotary function training rehabilitation equipment | |
| CN214564160U (en) | Tourism management practice teaching device | |
| CN204147515U (en) | A kind of slide plate | |
| CN214897037U (en) | Think classroom of political affairs teaching usefulness and ask questions rim plate | |
| CN218898582U (en) | Friction experiment model |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201020 Termination date: 20220213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |