CN207747635U

CN207747635U - A kind of examination mathematics plotter

Info

Publication number: CN207747635U
Application number: CN201721715432.6U
Authority: CN
Inventors: 张雪梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-12-12
Filing date: 2017-12-12
Publication date: 2018-08-21
Anticipated expiration: 2027-12-12

Abstract

The utility model discloses a kind of examination mathematics plotters, including cross bar, arc ruler is fixedly connected on the upside of the cross bar, the surface of the cross bar is plugged with shaft, and the surface of the shaft is fixedly connected with connecting rod, the surface of the shaft is socketed with movable sleeve, the top of the shaft is fixedly connected with baffle, and the lower surface of the baffle is fixedly connected with spring, and the bottom end of spring and the upside of movable sleeve overlap, the inner wall of the movable sleeve is fixedly connected with sliding block, and the surface of shaft offers sliding slot.The utility model is by being arranged rolling bearing units, screw rod and regulation handle, screw rod can be driven to generate rotation when rotating regulation handle, screw rod rotation is to push gear to rotate, since screw rod is by the rotation for being converted to gear of screw thread, so that screw rod rotates a circle, backgear only will produce micro propulsion, so that when gear being adjusted by rotating regulation handle, the angle adjusted is more accurate, easily facilitates and adjusts to specified angle.

Description

A kind of examination mathematics plotter

Technical field

The utility model is related to study article technical field, specially a kind of examination mathematics plotter.

Background technology

Currently, no matter all can't do without the study of geometry teaching in higher mathematics or elementary mathematics, for learning geometry Mathematics, drawing are an essential steps, need to use the various drawing auxiliary such as ruler in the drafting for carrying out geometric figure Equipment, wherein when drawing angle generally using to equipment be protractor, carry out angle drafting at present and generally require and first does one Straight line, using an endpoint of straight line as the center of circle, straight line is radius, and the other end of another straight line is determined by protractor Point is connected by two points, and by practical operation it is found that when carrying out angle drafting, operating procedure is very complicated, can drop significantly The efficiency of low study.

Invention content

（One）The technical issues of solution

In view of the deficiencies of the prior art, the utility model provides a kind of examination mathematics plotter, solves current number Learn problem inconvenient when the angle for drawing certain angle in drawing.

（Two）Technical solution

To achieve the above object, the utility model provides the following technical solutions：A kind of examination mathematics plotter, including cross Bar is fixedly connected with arc ruler on the upside of the cross bar, and the surface of the cross bar is plugged with shaft, and the surface of the shaft is fixed It is connected with connecting rod, the surface of the shaft is socketed with movable sleeve, and the top of the shaft is fixedly connected with baffle, the baffle Lower surface is fixedly connected with spring, and the bottom end of the spring and the upside of movable sleeve overlap, and the inner wall of the movable sleeve, which is fixed, to be connected It is connected to sliding block, the surface of the shaft offers sliding slot, and the sliding block is connected in sliding slot, and the surface of the movable sleeve, which is fixed, to be connected Be connected to gear, rolling bearing units be fixedly connected on the downside of the cross bar, be plugged with screw rod in the rolling bearing units, the screw rod with Gear engages, and one end of the screw rod is fixedly connected with regulation handle.

Preferably, the radian of the arc ruler is 180 degree, and the arc ruler is using shaft as the center of circle, the table of the arc ruler Face is provided with graduation mark.

Preferably, the meter full scale of the graduation mark is 0-180 degree, and the precision of the graduation mark is 1 degree.

Preferably, the quantity of the sliding block is two, and two sliding blocks are symmetricly set on the inner wall of movable sleeve, the sliding slot Quantity with positioned at corresponding with sliding block, and sliding slot passes through the surface of shaft.

Preferably, the length of the connecting rod is more than the internal diameter of arc ruler and the outer diameter less than arc ruler, the connecting rod are Bright structure, and index line is provided on the center line of connecting rod.

Preferably, the upside of the cross bar is smooth linear, and the both sides of the connecting rod are also smooth linear.

（Three）Advantageous effect

The utility model provides a kind of examination mathematics plotter.Has following advantageous effect：

（1）, the utility model by the way that rolling bearing units, screw rod and regulation handle is arranged, can be driven when rotating regulation handle Screw rod generates rotation, and screw rod rotation is to can push gear to rotate, since screw rod is by the rotation for being converted to gear of screw thread, So that screw rod rotates a circle, backgear only will produce micro propulsion so that by rotate regulation handle to gear into When row is adjusted, the angle adjusted is more accurate, easily facilitates and adjusts to specified angle.

（2）, the utility model by the way that shaft, movable sleeve, baffle, spring, sliding block and sliding slot is arranged, at the angle that needs are adjusted When spending larger, movable sleeve can be lifted upwards, and to which movable sleeve compressed spring band moving gear moves up, gear moves up then It can be detached from screw rod, so that shaft loses the position-limiting action of screw rod and gear, at this point, turning movable sleeve then can be with turn Axis rotates, so that connecting rod wide-angle is adjusted, is adjusted to its angle to unclamp movable sleeve close to after specified angle, and gear is made to return Precision adjusting is carried out again.

Description of the drawings

Fig. 1 is the structural schematic diagram of the utility model front view；

Fig. 2 is the attachment structure schematic diagram of the utility model shaft and movable sleeve.

In figure：1 cross bar, 2 arc rulers, 3 shafts, 4 connecting rods, 5 movable sleeves, 6 baffles, 7 springs, 8 sliding blocks, 9 sliding slots, 10 teeth Wheel, 11 rolling bearing units, 12 screw rods, 13 regulation handles, 14 graduation marks, 15 index lines.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.

As shown in Figs. 1-2, the utility model provides a kind of technical solution：A kind of examination mathematics plotter, including cross bar 1, the upside of cross bar 1 is fixedly connected with arc ruler 2, and the radian of arc ruler 2 is 180 degree, and arc ruler 2 is the center of circle, arc with shaft 3 The surface of ruler 2 is provided with graduation mark 14, and the meter full scale of graduation mark 14 is 0-180 degree, and the precision of graduation mark 14 is 1 degree, cross bar 1 Surface be plugged with shaft 3, the surface of shaft 3 is fixedly connected with connecting rod 4, and the length of connecting rod 4 is more than the internal diameter of arc ruler 2 and small In the outer diameter of arc ruler 2, connecting rod 4 is transparent configuration, and index line 15 is provided on the center line of connecting rod 4, and the upside of cross bar 1 is light The both sides of sliding linear, connecting rod 4 are also smooth linear, and the surface of shaft 3 is socketed with movable sleeve 5, and the top of shaft 3 is solid Surely it is connected with baffle 6, the lower surface of baffle 6 is fixedly connected with spring 7, and the bottom end of spring 7 is overlapped with the upside of movable sleeve 5, living The inner wall of dynamic set 5 is fixedly connected with sliding block 8, and the surface of shaft 3 offers sliding slot 9, and sliding block 8 is connected in sliding slot 9, sliding block 8 Quantity is two, and two sliding blocks 8 are symmetricly set on the inner wall of movable sleeve 5, the quantity of sliding slot 9 be located at it is corresponding with sliding block 8, And sliding slot 9 passes through the surface of shaft 3, the surface of movable sleeve 5 is fixedly connected with gear 10, and the downside of cross bar 1 is fixedly connected with band Seat bearing 11, is plugged with screw rod 12 in rolling bearing units 11, screw rod 12 is engaged with gear 10, and one end of screw rod 12 is fixedly connected with tune Save handle 13.

When practical, upward lifting activity 5 is moved up with moving gear 10 to 5 compressed spring 7 of movable sleeve, gear 10 to Upper movement can be then detached from screw rod 12, so that shaft 3 loses the position-limiting action of screw rod 12 and gear 10, at this point, turning work Dynamic set 5 can then drive shaft 3 to rotate, so that 4 wide-angle of connecting rod is adjusted, its angle is adjusted to close to after specified angle Unclamp movable sleeve 5, make gear 10 reply, rotate regulation handle 13 when can drive screw rod 12 generate rotation, screw rod 12 rotation to Gear 10 can be pushed to rotate, since screw rod 12 is by the rotation for being converted to gear 10 of screw thread, so that screw rod 12 rotates Gear 10 only will produce micro propulsion after a week, precisely be adjusted to the angle of connecting rod 4.

It can to sum up obtain,（1）, the utility model by the way that rolling bearing units 11, screw rod 12 and regulation handle 13 is arranged, adjusted in rotation Screw rod 12 can be driven to generate rotation when saving handle 13, the rotation of screw rod 12 is to push gear 10 to rotate, since screw rod 12 is by spiral shell The rotation for being converted to gear 10 of line, so that screw rod 12 rotates a circle, backgear 10 only will produce micro propulsion, So that when gear 10 being adjusted by rotating regulation handle 13, the angle adjusted is more accurate, easily facilitates tune Save specified angle.

（2）, the utility model by the way that shaft 3, movable sleeve 5, baffle 6, spring 7, sliding block 8 and sliding slot 9 is arranged, needing to adjust When the angle of section is larger, can lifting activity 5 upwards, moved up with moving gear 10 to 5 compressed spring 7 of movable sleeve, gear 10 move up and can be then detached from screw rod 12, so that shaft 3 loses the position-limiting action of screw rod 12 and gear 10, at this point, twisting Dynamic movable sleeve 5 can then drive shaft 3 to rotate, so that 4 wide-angle of connecting rod is adjusted, its angle is adjusted to close to specified angle Movable sleeve 5 is unclamped after degree, so that gear 10 is replied and is carried out precision adjusting.

It should be noted that herein, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence " including a reference structure ", is not arranged Except there is also other identical elements in the process, method, article or apparatus that includes the element.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims

1. a kind of examination mathematics plotter, including cross bar（1）, it is characterised in that：The cross bar（1）Upside be fixedly connected with Arc ruler（2）, the cross bar（1）Surface be plugged with shaft（3）, the shaft（3）Surface be fixedly connected with connecting rod（4）, The shaft（3）Surface be socketed with movable sleeve（5）, the shaft（3）Top be fixedly connected with baffle（6）, the baffle （6）Lower surface be fixedly connected with spring（7）, the spring（7）Bottom end and movable sleeve（5）Upside overlap joint, the activity Set（5）Inner wall be fixedly connected with sliding block（8）, the shaft（3）Surface offer sliding slot（9）, the sliding block（8）It is connected to Sliding slot（9）It is interior, the movable sleeve（5）Surface be fixedly connected with gear（10）, the cross bar（1）Downside be fixedly connected with band Seat bearing（11）, the rolling bearing units（11）Inside it is plugged with screw rod（12）, the screw rod（12）With gear（10）Engagement, the spiral shell Bar（12）One end be fixedly connected with regulation handle（13）.

2. a kind of examination mathematics plotter according to claim 1, it is characterised in that：The arc ruler（2）Radian For 180 degree, the arc ruler（2）With shaft（3）For the center of circle, the arc ruler（2）Surface be provided with graduation mark（14）.

3. a kind of examination mathematics plotter according to claim 2, it is characterised in that：The graduation mark（14）Scale Ranging from 0-180 degree, the graduation mark（14）Precision be 1 degree.

4. a kind of examination mathematics plotter according to claim 1, it is characterised in that：The sliding block（8）Quantity be Two, and two sliding blocks（8）It is symmetricly set on movable sleeve（5）Inner wall, the sliding slot（9）Quantity and be located at and sliding block（8） It is corresponding, and sliding slot（9）Pass through shaft（3）Surface.

5. a kind of examination mathematics plotter according to claim 1, it is characterised in that：The connecting rod（4）Length it is big In arc ruler（2）Internal diameter and be less than arc ruler（2）Outer diameter, the connecting rod（4）For transparent configuration, and connecting rod（4）Center line On be provided with index line（15）.

6. a kind of examination mathematics plotter according to claim 1, it is characterised in that：The cross bar（1）Upside be Smooth linear, the connecting rod（4）Both sides also be smooth linear.