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32results about "Slippage prevention" patented technology
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Use of a non-slip marking tool for people with disabilities
The invention relates to the use of a marking instrument (10; 10a), such as a ruler, set square, or protractor, to refine hand movements and increase the confidence and comfort of individuals who have difficulty automating hand gestures in time and space. The instrument comprises a main body (12) with one or more lateral marking elements (22), with one or more sliding systems (14, 15) and one or more gripping systems (16), and is constructed in several blocks. The main body (12) associated with the gripping system(s) (16) and the lateral marking elements (22) associated with the sliding system(s) (14, 15) are separate blocks, and the main body is actuated by pressure to perform a gripping action. Figure for the abstract: Fig. 14
Owner:AINSEBA ABDELKADER
Stencil alignment apparatus using pliable corner guides
Owner:CHO EFFIE
Auxiliary device for drawing circle
PendingCN120348092ASlippage preventionCircular curve drawing instrumentsStraightedgeStructural engineering
The invention relates to a circle drawing auxiliary device which comprises a base, a base rod with one end fixedly connected to the base, a center rod perpendicular to the base rod and with the middle end rotationally connected to the other end of the base rod, a driving assembly installed on the base rod and with the driving end in transmission connection to the upper end of the center rod, and at least one circle drawing mechanism. The circle drawing mechanism comprises a straight ruler plate parallel to the base rod, one end of the straight ruler plate is fixedly connected to the lower end of the center rod, the clamping cylinder is slidably connected to the straight ruler plate in the length direction of the straight ruler plate, the second limiting rod is connected to the straight ruler plate in a threaded mode, and the clamping cylinder is of a lower opening structure and used for allowing chalk to be inserted. The end of the second limiting rod abuts against the clamping cylinder. The problems that in the prior art, a circle drawing mode has limitation, a circle is difficult to draw at the high position of a blackboard, and circle drawing is possibly incomplete and has radius changes can be solved.
Owner:A BA TEACHERS UNIV
Drawing device for mathematics
The utility model provides a plotter for mathematics, which relates to the technical field of plotters and comprises a fixing seat, a sliding groove is arranged at the top of the fixing seat, a rotating ring is arranged in the sliding groove, a top plate is fixedly connected to the top of the rotating ring, and a center line is fixedly connected between the inner walls of the top plate. According to the drawing device, the drawing device is placed on the blackboard, the drawing device can be adsorbed to the blackboard through the suction cup, fatigue caused by long-time supporting of a worker is avoided, the ruler is manually pulled to move left and right, the center line and the scale line serve as reference, the radius of a graph is determined accordingly, the ruler is fixed by tightening the first locking bolt, and the drawing device is convenient to use. The straight ruler is made of transparent acrylic plate materials, the relative position between the pointer and the angle line is observed through the straight ruler, accordingly, the included angle of the circle center of the arc is determined, and the drawing efficiency is greatly improved.
Owner:SOUTH SICHUAN PRESCHOOL TEACHERS COLLEGE
A drawing device for higher vocational mathematics education
The present invention discloses a drawing device for higher vocational mathematics education, which relates to the technical field of mathematics drawing, including a support device, wherein a limiting device is arranged at the left end inside the support device, and the limiting device is fixedly connected with a folding device. The present invention drives the following plate to move by setting a rotating track column, and when the following plate moves, it will also move in the sliding groove through a sliding block in coordination with a matching hole for auxiliary limiting, and when the annular disk moves, it will drive the chalk or marker to follow the function track to draw the required function image on the blackboard or whiteboard, thereby solving the problem that most of the drawing devices for higher mathematics teaching and education today cannot assist teachers to draw function images quickly and roughly, and then teachers need to find points to draw function images based on their own teaching experience, thereby reducing the teaching efficiency of teachers drawing to a certain extent.
Owner:RIZHAO VOCATIONAL & TECHNICAL UNIVERSITY
Multifunctional geometric tool for junior high school
ActiveCN224103769USlippage preventionNon-circular curve drawing instrumentsStructural engineeringMechanical engineering
The utility model discloses a multifunctional junior high school geometry tool, and relates to the technical field of drawing tools. The device comprises a square plate, an inscribed circle is formed in the square plate, a circular plate is fixedly arranged in the inscribed circle, a special-shaped groove is formed in the circular plate, a first triangular block and a second triangular block are fixedly arranged in the special-shaped groove, and one side of the first triangular block is fixedly connected with one side of the second triangular block; a plurality of first holes are formed in the circular plate; through cooperation of the square plate and the ruler, a rectangular coordinate system can be accurately drawn, two geometric circles with different diameters are drawn through the inscribed circle and the circular plate, and an equilateral triangle and a special isosceles triangle are respectively drawn through the first triangular block and the second triangular block, so that the convenience of geometric figure drawing is improved; the convenience of mathematics teaching is improved; by arranging the magnet block, the geometric tool can be attracted and fixed to the blackboard through the magnet block, and operation is convenient and fast in the geometric figure drawing process.
Owner:关克娟
Mathematics teaching aid for assisting solution of trigonometric function value
Owner:JUYE COUNTY VOCATIONAL SECONDARY SCHOOL
Magnetic attraction accessory for teaching appliance
A magnetic suction accessory for a teaching appliance comprises a base, a magnetic block is assembled at the bottom of the base, the magnetic block and the base are connected through a plurality of fasteners, and a soft rubber coating layer is arranged outside the magnetic block. Compared with the prior art, the design that the magnetic block is wrapped by the rubber coating layer is adopted, the surface of the blackboard can be effectively prevented from being scratched by the magnetic block, the friction coefficient with the surface of the blackboard is increased, and under the condition of the same magnetic force, the friction force is larger, the base is not prone to sliding off, and stability is higher. In addition, the base and the magnetic block are connected through the fastener, and compared with a traditional glue bonding fixing mode, loosening is not prone to occurring, and stability is higher.
Owner:NINGBO MS SCI & EDUCATIONAL INSTR CO LTD
Gripping aid for work tool
PendingJP2025160840AWriting connectorsSlippage preventionMechanical engineeringIndustrial engineering
To provide a gripping aid for a work tool that is easy to attach and detach, is less prone to deformation that impairs usability, and is compatible with work tools of different diameters and lengths.SOLUTION: A gripping aid for a work tool for assisting in the gripping of a work tool includes a sheet-like member made of a flexible material and a locking portion provided on the sheet-like member, the locking portion being disposed at a position where the sheet-like member can be maintained folded in half. The present invention provides a simple configuration that can function as a gripping aid for a work tool. Furthermore, since the work tool is sandwiched (wrapped) by the folded sheet-like member, the gripping of the work tool is assisted, making it easy to attach and detach, and less prone to deformation that impairs usability. Furthermore, the tool can be used with a wide range of work tools, regardless of their diameter or length.SELECTED DRAWING: Figure 1
Owner:大江 崇之
Compasses with radius convenient to adjust
The utility model relates to the field of compasses, in particular to compasses convenient to adjust radius, which comprise a connecting block, an adjusting component is fixed on the side surface of the connecting block, a rotating component is arranged in the adjusting component, the adjusting component comprises an annular block fixed on the side surface of the connecting block, and the side surface of the annular block is movably connected with a connecting ruler. A first sleeve is fixed to the top surface of the annular block, a sliding block is movably connected to the side surface of the connecting ruler, a first limiting bolt is connected to the top surface of the sliding block through threads, and a transparent lens is fixed to the side surface of the sliding block. The connecting ruler and the sliding block are arranged in the adjusting assembly, a ruler and compasses are combined together, a user does not need to hold the compasses with one hand and hold the compasses with the other hand to measure the distance between a chalk and a compasses point, use is more convenient, meanwhile, the device can be used as the ruler, the application range is wide, and practicability is high. The protractor is arranged on the side surface of the connecting block, so that angles can be measured conveniently.
Owner:ZHEJIANG GOLDMONKEY STATIONERY
Folding type drawing measuring ruler
ActiveCN222298648Ueasy to usegood fixed positionSlippage preventionRulers for direct readingStructural engineeringMeasuring ruler
The utility model relates to the technical field of folding type drawing measuring rulers, in particular to a folding type drawing measuring ruler which is convenient to use and comprises drawing measuring ruler bodies, size scales are arranged at the top end of each drawing measuring ruler body, and a plurality of placing square grooves are formed in the drawing measuring ruler bodies. The drawing measuring ruler comprises a drawing measuring ruler body, the drawing measuring ruler body is provided with a plurality of size scales, each square containing groove is formed in the middle of the size scales and evenly distributed at intervals, a magnet block is arranged in the middle of each square containing groove, each magnet block is matched with the corresponding square containing groove, and a metal fixing plate is arranged at the bottom end of the drawing measuring ruler body and matched with the magnet blocks.
Owner:YUYAO LICHENG TOOLS CO LTD
Combined multifunctional mathematics teaching instrument
The invention discloses a combined multifunctional mathematics teaching instrument, and relates to the technical field of mathematics teaching, the combined multifunctional mathematics teaching instrument comprises a semicircular protractor, the protractor is provided with angle scale marks, the central point of the protractor is movably connected with a ruler through an I-shaped rotating shaft, the ruler is provided with length scale marks, and the central lines of the protractor and the I-shaped rotating shaft coincide. The part of the I-shaped rotating shaft at the bottom of the protractor is embedded in the protractor. The part, located at the bottom of the protractor, of the I-shaped rotating shaft is embedded into the protractor, the lower surface of the I-shaped rotating shaft and the lower surface of the protractor are coplanar, when an arc line needs to be drawn, the protractor can be attached to a blackboard and can be fixed in a hand pressing mode, or the I-shaped rotating shaft is made of a magnetic attraction material and can be attracted to the blackboard, and therefore the arc line can be drawn conveniently. Subsequent operation is facilitated, and the problem that the accuracy of arc line drawing, straight line drawing and other operations is affected due to the fact that the left portion of the protractor and the rotating plate cannot be attached to the plane is solved.
Owner:LANGFANG NORMAL UNIV
Antiskid ruler
The embodiment of the utility model discloses an anti-skidding ruler, which comprises a hard body, and the body is provided with a notch at the sharp corner position of the anti-skidding ruler; and the tip of the elastic body is arranged in the notch and forms a sharp corner of the anti-slip ruler. According to the anti-skid ruler, the elastic body is embedded in the sharp corner position, so that the rigidity and the precision of the hard body are kept, the impact of external force is effectively buffered, the risk of injury is reduced, and meanwhile, the accuracy of the straight line and the angle of the ruler body is ensured.
Owner:宁波思航文具有限公司
Drawing ruler
ActiveCN222554620UReduce displacement distanceshorten preparation timeSlippage preventionStraightedgesSuction forceMechanical engineering
The utility model relates to the technical field of primary school teaching aids, and discloses a drawing ruler which comprises a bearing ruler plate, limiting holes are formed in the upper side and the lower side of the front face of the bearing ruler plate respectively, a limiting assembly is arranged in each limiting hole, each limiting assembly comprises a limiting pipe, the inner wall of each limiting pipe is provided with a supporting protruding ring, and the supporting protruding rings are arranged on the inner walls of the limiting pipes respectively. A reset spring is clamped to the front face of each supporting convex ring, and a pressing end cap is arranged at the front end of each reset spring. According to the drawing ruler, through the limiting assembly, the pressing end cap moves along the limiting pipe, the pressing end cap drives the limiting suction cup to move towards the blackboard side through the extension rod, air in the limiting suction cup is exhausted after the limiting suction cup makes contact with the blackboard, vacuum suction force is generated between the limiting suction cup and the blackboard in the process, and the device and the blackboard are fixed through the vacuum suction force; and the displacement distance of the operation gap of the device is greatly reduced, the preparation time before operation of the device is effectively shortened, and therefore the practicability of the device is enhanced.
Owner:HUAXUN CONSTRUCTION (SICHUAN) CO LTD
Combined drawing tool
ActiveCN223533244USlippage preventionCircular curve drawing instrumentsStraightedgeStructural engineering
The utility model provides a combined drawing tool which comprises a first ruler body, a second ruler body, a fixed suction cup and a connecting device, the second ruler body comprises a semicircular part, a straight ruler part and a connecting part, the connecting part is connected with the fixed suction cup, and the connecting device is connected with the fixed suction cup. The first ruler body covers the second ruler body and intersects with the semicircular part at the circle center position, a hole penetrating through the two ruler bodies is formed in the circle center position, and the two ruler bodies are hinged together through the connecting device and the hole. According to the multifunctional compasses, the compasses, the ruler and the protractor are combined together, so that tools do not need to be replaced frequently during drawing, the operation complexity is reduced, and various drawing tools are combined together, so that the drawing tools are convenient to store and carry.
Owner:XIN DISTRICT JUNIOR HIGH SCHOOL SUCHENG DISTRICT SUQIAN CITY
Antiskid plastic ruler
ActiveCN224060745USolve the problem of easy falling offresolve accuracySlippage preventionStraightedgesStructural engineeringSoft materials
The utility model discloses an anti-skidding plastic ruler which comprises a ruler body and an anti-skidding device, the ruler body is made of hard plastic, and the anti-skidding device is made of soft plastic. The anti-skid device is fused with the external area of the corner of the ruler body, the anti-skid device is distributed along the edge of the ruler body, the anti-skid device can bend and deform, the bending angle is adjustable, and a user can adjust the bending degree of the anti-skid device according to needs so as to adapt to different use scenes and operation requirements; the antiskid device made of soft materials and the rigid plastic ruler body are integrally designed, and through distribution and function optimization of the antiskid device and the rigid plastic ruler body, the antiskid performance of the ruler is improved, the operation convenience is enhanced, and the durability is improved; in addition, the deformable taking area is designed at the corner of the ruler body, so that the problem that a traditional ruler is prone to sliding is solved, and the experience of a user in the taking, placing and using processes is optimized.
Owner:YIWU DINGBANG STATIONERY & SPORTING GOODS
Economical drawing device
The invention discloses an economic drawing device, and relates to the technical field of economic drawing devices.The economic drawing device comprises a mounting rack, a rotating rod is rotatably mounted on the inner wall of the mounting rack, a connecting frame is fixed to the outer wall of the rotating rod, a fixing sleeve is fixed to the inner side of the mounting rack, and a spring is fixed to the outer wall of the rotating rod; the side, away from the rotating rod, of the clockwork spring is fixed to the inner wall of the fixing sleeve, a connecting base is fixedly installed at the bottom of the mounting frame, a sliding block is slidably installed on the inner wall of the connecting frame, and a rotating column is rotatably installed at the bottom of the sliding block. According to the economic drawing device, when a fan-shaped statistical chart needs to be drawn, a clamping block and a clamping hole are matched, a sliding block is limited, so that a chalk block in a placing frame is fixed, a suction cup is adsorbed to a drawing board, and a mounting frame is rotated, so that a connecting frame and the chalk block can be driven to rotate; and fan-shaped drawing can be carried out.
Owner:YICHUN VOCATIONAL TECH COLLEGE
Electric kettle capable of switching power
The utility model relates to an electric kettle capable of switching power. In the actual water boiling process, drinking water can be poured into the kettle body, then power is supplied through the power supply mechanism, the current flows to the elastic pressing piece through the shunt current-conducting plate to reach the first circuit, power is supplied to the heating element through the first circuit, and then the drinking water is heated through the heating element; the sliding switch can slide, so that the sliding switch relieves pressing on one elastic pressing piece and presses the other elastic pressing piece through pressing protrusions which are arranged in a staggered mode, the other elastic pressing piece is connected with a second circuit, then current is led to the second circuit through the other elastic pressing piece, and output voltage is adjusted through an adjuster. And then power is supplied to the heating element through the adjusted current, so that the power of the electric kettle can be conveniently switched according to different use scenes, and the electric kettle can be better suitable for more scenes.
Owner:YUYAO CITY FUDA ELECTRONICS
Teaching auxiliary scribing device
ActiveCN222387882Ureduce potential hazardsReduce the likelihood of potential hazards occurringSlippage preventionCircular curve drawing instrumentsMechanical engineeringIndustrial engineering
The utility model discloses an auxiliary scribing device for teaching, which comprises a first graduated scale, a second graduated scale and rotating assemblies, and is characterized in that the rotating assemblies are arranged at the ends, close to each other, of the first graduated scale, the second graduated scale and an angle ruler, each rotating assembly comprises a rotating shell, a first spacer block is arranged in each rotating shell, and a second spacer block is arranged in each rotating shell. An angle ruler is arranged at the top end of the first partition block, a first fixing block, a second partition block, a second fixing block and a third partition block are sequentially arranged at the bottom end of the first partition block from top to bottom, and the first graduated scale and the second graduated scale are provided with a first compass assembly and a second compass assembly; through the arrangement of the rotating assembly, the first compass assembly and the second compass assembly, the application range of the device can be effectively expanded, meanwhile, the problem that the device possibly slightly moves in the drawing process is solved, the teaching efficiency and quality are effectively improved, and teaching work is better carried out.
Owner:WUXI CITY XINGZHI TECHNICAL SCHOOL
Mathematics teaching drawing device
ActiveCN223574093USlippage preventionCircular curve drawing instrumentsMechanical engineeringLine drawings
The utility model relates to the technical field of teaching drawing devices, in particular to a mathematics teaching drawing device which comprises a line drawing leg, a positioning leg is rotatably connected to the side face of the line drawing leg, a second fixing block is fixedly installed on the bottom face of the line drawing leg, and a fixing assembly is fixedly installed on the side face of the second fixing block. A clamping device is fixedly installed on the other side face of the fixing assembly and comprises a first fixing block, a rotary knob is rotationally connected to the side face of the first fixing block, a sponge cushion is rotationally connected to one end of the rotary knob, and an extension rod is fixedly installed in the first fixing block. The compasses can be flexibly combined with a ruler through structures such as the line drawing leg, the positioning leg and the first round ruler, the frequency of switching drawing tools in the drawing process of a teacher can be reduced, the drawing efficiency is improved, and chalks with different lengths can be fixed more stably and conveniently by arranging structures such as a clamping device, a fixing circular ring and an extension rod.
Owner:BAZHONG VOCATIONAL & TECH COLLEGE
Mathematical coordinate drawing device
The utility model belongs to the technical field of mathematics teaching, and particularly relates to a mathematics coordinate drawing device which comprises a cross, and a drawing device is arranged in the cross. According to the mathematical coordinate drawing device, the installation unit is arranged, a protruding block is pushed to drive a pressing plate to compress a spring, the distance between the pressing plate and a sliding block is increased, then a chalk is placed between the sliding block and the pressing plate, the protruding block is loosened, the chalk is pushed to penetrate through the four limiting frames under the action of the spring to abut against a blackboard, and therefore chalk installation is completed; the drawing device is simple in structure and convenient to install, the drawing efficiency is improved, the problems that chalk installation is tedious and the drawing efficiency is affected in the background technology are solved, the chalk is extruded and fixed through the four limiting frames by arranging the auxiliary unit, shaking of the chalk during drawing is avoided, the drawing quality is improved, and meanwhile the friction force between the limiting frames and the chalk is reduced in cooperation with the rollers; and when the pressing plate extrudes the chalk, the chalk can more easily extend into the blackboard to be in contact with the surface of the blackboard, so that drawing is smoother.
Owner:GUANGZHOU UNIVERSITY
Blackboard eraser
The utility model provides a blackboard eraser, which belongs to the technical field of auxiliary education products and comprises a blackboard eraser body, the blackboard eraser body comprises an end cover, an elastic layer and a felt layer which are sequentially arranged from top to bottom, the blackboard eraser body is sleeved with a flexible sleeve layer from bottom to top, and the flexible sleeve layer surrounds the periphery of the end cover, the periphery of the elastic layer and the periphery of the felt layer and the bottom of the felt layer. A plurality of connecting pieces are arranged on the periphery of the flexible sleeve layer and used for fixing the flexible sleeve layer to the blackboard eraser body, and magnetic attraction blocks are embedded in the two sides of the lower end of the elastic layer. The blackboard eraser provided by the utility model can be magnetically attracted with the automatic blackboard eraser cleaning machine from any end, can be matched with the automatic blackboard eraser cleaning machine for use, does not need to add additional accessories or secondarily improve the structure of the blackboard eraser, and is higher in universality.
Owner:SHIJIAZHUANG KEDA STATIONERY
Tracing instrument
The invention relates to a marking instrument, such as a ruler, set square, or protractor, comprising: - a handle (P) which includes a handle body (CP) carrying locking feet (PB) equipped with locking structures (B); - a handle receptacle (RP) receiving the locking feet (PB) and the locking structures (B); - a marking structure (T1, T2) fixed to the handle receptacle (RP), comprising at least one marking edge, the handle (P) being inserted into the handle receptacle (RP) in a position that locks the marking instrument onto the support by means of the locking structures (B); and being released in a position that unlocks the marking instrument. The invention provides a marking instrument that is simpler to assemble and reduces problems of jamming and wedging, while ensuring good stability. The invention also relates to a method for manufacturing such a marking instrument. Abstract figure: Fig. 2
Owner:AINSEBA ABDELKADER
Tracing instrument
The invention relates to a tracing instrument, such as a ruler, set square or protractor comprising:- a handle (P) which comprises a handle body carrying locking feet (PB) equipped with locking structures (B);- a handle receptacle (RP) receiving the locking feet (PB) and the locking structures (B),- a tracing structure fixed to the handle receptacle (RP), comprising at least one tracing rim, the handle (P) being inserted into the handle receptacle (RP) towards a position for locking the tracing instrument on the support by means of the locking structures (B); and released towards a release position unlocks the tracing instrument. According to the invention, the locking structures (B) each comprise a pad receptacle (RPP) equipped with a pad (PP). The invention also relates to a method for manufacturing such a tracing instrument. Abstract figure: Fig. 3
Owner:AINSEBA ABDELKADER
Electromagnetic adsorption scribing ruler convenient to take, place and move
In order to overcome the defects in the prior art, the utility model relates to an electromagnetic adsorption graduated ruler convenient to take, place and move, which comprises a graduated ruler, an electromagnet and a battery, a handle is fixed on the graduated ruler, the battery is arranged in the handle, an upper insulating sleeve and a lower insulating sleeve are respectively sleeved on the handle, and the upper insulating sleeve is sleeved on the lower insulating sleeve. The handle between the upper insulating sleeve and the lower insulating sleeve is also sleeved with an insulating rotating sleeve, the lower edge of the upper insulating sleeve is respectively provided with two upper static contacts, and the positive electrode and the negative electrode of the battery are respectively connected with the two upper static contacts; the upper edge of the lower insulating sleeve is provided with two lower static contacts, the winding wire is connected with the two lower static contacts, two forward-conducting parallel wires and two reverse-conducting staggered wires are embedded in the side wall of one side and the side wall of the other side of the insulating rotating sleeve respectively, the ends of the two forward-conducting parallel wires and the ends of the two reverse-conducting staggered wires are connected with movable contacts respectively, and the insulating rotating sleeve is rotated. The winding wires can be conducted in the forward direction or in the reverse direction or disconnected. The marking device is not prone to remanence, convenient to take, place and move and suitable for marking lines on the surface of a steel workpiece.
Owner:YANKUANG ENERGY GRP CO LTD
Flexible folding ruler with magnetic structure
The flexible folding ruler with the magnetic force structure comprises a ruler body, a connecting rod is fixedly connected to the left side of the ruler body, the end, away from the ruler body, of the connecting rod is fixedly connected with a handheld end, scale marks are fixedly arranged on the surface of the upper end of one side of the ruler body, and the scale marks are fixedly connected with the ruler body. The surface of the lower end of the ruler body is inclined, the thickness of the lower end of the ruler body is smaller than that of the upper end of the ruler body, and the ruler body is made of magnet materials. The measuring instrument is made of a magnet material, can be bent at will, is attached to the surface of an uneven or irregular object, and rapidly and effectively measures the size value needing to be measured. After being used, the magnetic attraction device can be folded and put away without being separated and broken, so that the magnetic attraction device is convenient and fast; the connecting rod is fixedly connected to the left side of the ruler body, the handheld end is arranged on the left side of the connecting rod, the ruler can be used as a bookmark when not used, and the practicability of the ruler is improved through multifunctional use.
Owner:HEBEI JINGCHE RAIL TRANSIT VEHICLE EQUIP CO LTD
Device for drawing circles, arcs of circles and measuring lengths on classroom boards or any other magnetic surface.
Device for drawing circles or arcs of circles and measuring lengths on classroom boards or other magnetic surfaces. The invention relates to a device for accurately drawing circles or arcs of circles of selected radii on magnetic surfaces with one hand, and for measuring lengths. The device consists of a magnet (1) into which a peg (2) is screwed, a graduated tape (3) with a hole (4) at the 0 mark, the center of rotation of the tape (3) around the peg (2) at the center of the magnet (1), and a piece (5) that serves as a guide for the writing tool, which can be moved and locked by the user to select the radius of the circles or arcs to be drawn. After selecting the radius, the user inserts their writing tool into the most suitable hole of the two.The user rotates the ribbon (3), stretched around the magnet (1), while keeping the writing tool pressed against the board, to form the desired arc or circle. The graduations on the ribbon (3) also allow the user to measure lengths. The ribbon (3) has two sides graduated with different metric systems to meet the needs of a wide range of users. The device according to the invention is particularly intended for use with magnetic boards used by teachers or anyone with a magnetic surface.
Owner:LE GUEN PIERRE LOUIS-MARIE
Stationery ruler
ActiveCN222793092USlippage preventionNon-circular curve drawing instruments
The stationery ruler comprises a stationery ruler body, a first side face and a second side face, the first side face comprises an inclined face and a groove, the groove is located at the tail end of the inclined face and connected with the inclined face to form an integrated structure, the groove is composed of a first bevel edge and a second bevel edge, and the first bevel edge and the second bevel edge are connected to form the groove. The second side face is provided with a plurality of drawing blocks, the drawing blocks are distributed at intervals along the second side face, and a gap exists between every two adjacent drawing blocks so that a drawing groove can be formed between every two adjacent drawing blocks. The stationery ruler is provided with the groove, so that a student can conveniently buckle the stationery ruler from a paper surface or a desktop, and the inclined surface is arranged on the first side surface of the stationery ruler, so that a pen point can conveniently pass through the inclined surface when a line is drawn, and the purpose of quickly drawing the line can be achieved.
Owner:NANHAI EXPERIMENTAL MIDDLE SCHOOL NANHAI DISTRICT FOSHAN CITY
Use of a non-slip marking tool for people with disabilities
ActiveFR3151985A1Slippage preventionCircular curve drawing instrumentsSimulationMechanical engineering
The invention relates to the use of a marking instrument (10; 10a), such as a ruler, set square, or protractor, to refine hand movements and increase the confidence and comfort of individuals who have difficulty automating hand gestures in time and space. The instrument comprises a main body (12) with one or more lateral marking elements (22), with one or more sliding systems (14, 15) and one or more gripping systems (16), and is constructed in several blocks. The main body (12) associated with the gripping system(s) (16) and the lateral marking elements (22) associated with the sliding system(s) (14, 15) are separate blocks, and the main body is actuated by pressure to perform a gripping action. Figure for the abstract: Fig. 14
Owner:AINSEBA ABDELKADER
A magnetic circle drawing precision instrument
ActiveCN111497500BImprove drawing efficiencyeasy to operateAngles/taper measurementsSlippage preventionTeaching toolMeasuring ruler
The present invention relates to the technical field of teaching tools, and in particular to a magnetic circle drawing accuracy instrument, comprising a center body and a radius ruler; wherein the center body has a plane that can contact a plate body, a cavity for setting a magnetic body is provided on the center body, a circle center positioning mechanism is provided at the center position of the center body, the circle center positioning mechanism is used to set a pen for drawing the center of a circle, a 360-degree angle scale is fixed to the center body, the radius ruler rotates freely around the center line of the center body, and one end of the radius ruler has a connection unit for setting a circle drawing pen for drawing an arc line. The magnetic circle drawing accuracy instrument obtained by the present invention uses magnetism to adsorb it on a blackboard and mark the center position of the circle. The scale on the radius ruler can realize drawing a circle of any precise radius length. The radius ruler can measure and intercept an arc of any angle in combination with the angle scale. It is easy to operate and can quickly draw an accurate and clear circle.
Owner:陆琴莲