CN2491924Y

CN2491924Y - Stroke demonstrator

Info

Publication number: CN2491924Y
Application number: CN 01230657
Authority: CN
Inventors: 李绳锁
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-07-17
Filing date: 2001-07-17
Publication date: 2002-05-15
Anticipated expiration: 2011-07-17

Abstract

A journey demonstration device for reversing, encountering, and going-after circumstances comprises a calculagraph, a journey scale window, an alarming device, a small vehicle model, a demonstration device body, and a dual-path road slab, wherein a rectangular body of a U-shaped slot of the body is provided with an indicator light, the road slab is arranged above the opening of the U-shaped slot, the alarming device and the calculagraph are respectively arranged on both ends of the body, thereby having the advantages of alarming, indicating, visual pattern, much fun, and convenient operation and the like. The utility model can demonstrate the reversing, the encountering and the going-after movements to promote the interests of pupils, can meanwhile draw pupils' attention, and stimulate pupils' interests and longing for knowledge, which deeply impresses pupils by the visual movements in the demonstration to enhance the teaching effects, thereby can be popularized and applied in a great number of elementary schools.

Description

A kind of stroke demonstration device

The utility model belongs to a kind of education demonstrator, is a kind of demonstration device that is used for route problem.

In the teaching of primary school, route problem in the mathematics is the content of pupil's indigestion and grasp always, China Patent No. 228461.x discloses a kind of demonstration device that is used for stroke, it is made up of speed ratio wheel, engaged wheel, timer, and this demonstration device structure is comparatively simple, interest and intuitive are also relatively poor.It is demonstration and warning function etc. not.

The purpose of this utility model is to overcome the deficiency that above-mentioned existing stroke demonstration device exists, and a kind of have warning, indication are provided, and is visual in image, interesting strong, easy to operate stroke demonstration device.

A kind of stroke demonstration device that the utility model provides, it comprises timer, mileage scale window, is characterized in warning device in addition, little vehicle model, demonstration device body, two-way traffic road deck.Described body is the rectangular parallelepiped of " U " shape groove, and the groove of dress pilot lamp is arranged on it; Described scale window is contained in the body side of indication light trough, and road deck is contained on the opening of body " U " shape groove.Warning device is contained in an end of body, other end dress timer; Permanent magnet is equipped with in the bottom of described little vehicle model; Timer is by shell, motor, cogwheel gearing, two output belt driving wheels, timing scale dish, hour hands and minute hand; And two switches and the switch operation bar that are installed in cover top portion, compositions such as the battery case of adorning in it.Motor and cogwheel gearing are packed in the end of body, are adorning hour hands and minute hand on the hour hands of gearing, minute hand output shaft, and its timing scale dish is contained in the front of shell, and described shell is fixedly mounted on the end of body.In " U " of described body groove, two engaged wheels are equipped with in its termination that warning device is installed, and are travelling belt thereon, and tensioning spring and two carriages are arranged, and the lead of power supply slip, at it permanent magnet that attracts little vehicle model is installed above the carriage.

Above-described a kind of stroke demonstration device is equipped with a switch contact on described two carriages, and is provided with pilot lamp green, yellow, red trichromatism thereon.Pilot lamp is installed in the light trough on the body.

A kind of stroke demonstration device that the utility model provides, its warning shell can be designed to primary school teaching building sample, because it has little vehicle model, two pass road surface, graduated time ring, mileage scale window, green, yellow, red trichromatism pilot lamp and alarm sound etc., strengthen pupil's interest, had good interest.It can be demonstrated and meet, come up with, opposing motion, and its intuitive is fine, has improved pupil's understandability.Attract pupil's notice simultaneously, excite student's interest and aspiration to knowledge, make in the image action of student from demonstration and obtain deep impression, strengthened teaching efficiency, in the teaching of primary school, can generally promote and use.

Describe exemplary embodiments of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is a stroke demonstration device front view;

Fig. 2 is a stroke demonstration device vertical view;

Fig. 3 is the structural representation of stroke demonstration device;

Fig. 4 is the structure vertical view of stroke demonstration device;

Fig. 5 is the housing construction synoptic diagram of stroke demonstration device;

Fig. 6 is the cogwheel gearing structural scheme of mechanism;

Fig. 7 is a third wheel switch operation structural representation in the cogwheel gearing;

Fig. 8 is that third wheel is at the support scheme of installation;

Fig. 9 is the electrical schematic diagram of stroke demonstration device.

Fig. 1 and Fig. 2, a kind of stroke demonstration device, it is made up of timer 1, mileage scale window 2, warning device 3, the dolly model 4 of bottom mounted permanent magnet 40, demonstration device body 5, two pass road deck 6, timer, warning device are installed in the two ends of body respectively, row scale window is contained in the side of body in described, road deck is contained in its top, and little vehicle model is placed on the road deck.Fig. 3, Fig. 4 and Fig. 5 middle finger show the structure of body, described body is the rectangular parallelepiped 7 of " U " shape groove, the groove 8 that the dress pilot lamp is arranged on it, described timer is by shell 9, motor 10, cogwheel gearing 11, two output belt driving wheels 12, timing scale dish 13, hour hands 14 and minute hands 15, and being installed in two switches 16,17 on the cover top portion, the battery case of adorning within it 18 is formed; Motor and cogwheel gearing are fixed on the end of body, and are adorning hour hands and minute hand on the hour hands of gearing and minute hand output shaft, and its timing scale dish is contained in the front of shell.In " U " of described body shape groove, two engaged wheels 19 are equipped with in its installation warning device termination, it on it travelling belt 20, and connection tensioning spring 21 and two carriages 22, and the slide wire 23 of power supply is housed, at it permanent magnet 221 that attracts little vehicle model is installed above the carriage.Its carriage also includes frame plate 222, pilot lamp and its line, and the compositions such as contact 223 that connect slide wire 23.Be respectively equipped with three pilot lamp green, yellow, red trichromatism on two carriages, and be placed in the light trough 8 of body.

Fig. 6 is a cogwheel gearing, and it is by its support 110, fixed connecting rod 111, and multiple sets of teeth wheel 112 and axle 113 are formed.Motor reaches and drives a driving wheel 12 and hour hands 14 and minute hand 15 through gear and axle according to certain speed ratio, and through a mistake wheel apparatus 114 another driving wheels of driving, Fig. 7, it is crossed wheel apparatus and comprises third wheel and axle 115, a driving wheel 12 of dress on it, the attached plate 116 of supporting, the depression bar 117 of third wheel are installed, camshaft 118, control lever 119 and back-moving spring 120.Fig. 8, described third wheel and axle, driving wheel are contained in the slotted hole 121 of attached plate of supporting and support 110; Support attached plate and be hinged on the support, a back-moving spring is installed on itself and the support, on the attached plate of supporting, depression bar is installed, and passes in connecting link 111 holes, an offset cam and axle are housed on the support of its apical position, on its axle control lever is housed by screw 122.When moving the position of control lever, its third wheel will be taken turns engagement with its engagement is upper and lower, and in the middle of perhaps third wheel was in, this moment, the rotation direction and the speed of driving wheel changed demonstration opposing, that meet that little vehicle model can be realized.

Fig. 9, stroke demonstration device electrical schematic diagram, its electrical control comprises positive and negative trip control circuit two parts composition of warning circuit and dolly.Wherein warning circuit is by 3V direct supply E2 power supply, and the switch contacts K3 on carriage connects a warning pronunciation circuit U01, and and connects a red led L3 and form.And positive and negative trip control circuit is by 1.5V direct supply E1 load direct current motor M, and is connected in green indicating lamp L1 and yellow indicator lamp L2 in the loop, and composition such as two-way switch (up time) K1 in the loop and (inverse time) K2 in the series connection.

The using method of a kind of stroke demonstration device provided by the utility model.When demonstration, pushbutton switch is pinned, be placed on little vehicle model on the road deck 6 under attraction, along with the carriage of body just can travel automatically, timer picks up counting simultaneously, and pilot lamp is luminous on the mileage dial window, the indication stroke, when two little vehicle models meet, send the indication of alarm sound and red light.

Warning device is made up of warning circuit device and battery case in shell 26, the shell.Sign first ground on its front plate, and write exactly and be " Hope Primary School "; Sign second ground on the counter front plate, and annotate be written as " bright primary school " its top the third wheel control lever for (opposing), meet, neutral gear comes up with, the third gear selector switch.When the demonstration opposing, when meeting, push the pass aside to the shelves that meet, this hour setting wheel and lower gear engagement, and green light (carriage) move to first ground, amber light moves to second ground, meet push button K1 (up time) 16, when two cars meet, send chimes of doom, red light stops, be that switch on the carriage touches and closes closed K3, decontrol push button K1.Regard when coming up with demonstration, in green, the amber light of row indication all on first ground (before the Hope Primary School building), selector switch is allocated to " stopping " position, be in the middle of third wheel is in, not with gearing mesh up and down, allow the green light 25km (behind the segment distance) that gets ahead, selector switch is dialled to coming up with, be the third wheel and the engagement that cogs, the demonstration beginning.The parking stall is green when adjusting, during yellow light position, by inverse time (switch) 16 (K2) or up time push button, the selector switch optional position just can be carried out.

Claims

1, a kind of stroke demonstration device comprises timer (1), scale window (2), it is characterized in that warning device (3), little vehicle model (4), demonstration device body (5), two pass road deck (6) in addition; Described body is the rectangular parallelepiped (7) of " U " shape groove, the groove (8) that the dress pilot lamp is arranged on it, described scale window are contained in the body side of indication light trough, and road deck is contained in the opening top of body " U " shape groove, warning device is contained in body one end, other end dress timer; A block permanent magnet (401) is equipped with in the bottom of described little vehicle model; Timer is by shell (9), motor (10), cogwheel gearing (11), reach two output belt driving wheels (12), timing scale dish (13), hour hands (14), minute hand (15), be installed in two switches (16,17) on the cover top portion, the battery case of adorning in it (18) is formed; Motor and cogwheel gearing are fixed on the end of body, are adorning hour hands and minute hand on the hour hands of gearing, the minute hand shaft, and its index dial is contained in the front of shell; Described shell is packed in the body end; In " U " of described body shape groove, two engaged wheels (19) are equipped with in its termination that warning device is installed, it on it travelling belt (20), tensioning spring (21) and two carriages (22), power supply slide wire (23) also is housed, the permanent magnet (221) that attracts little vehicle model is installed on its carriage.

2, a kind of stroke demonstration device according to claim 1 is characterized in that described two carriages have switch contact (24), which is provided with green, yellow and red three pilot lamp (25), and is placed in the indication light trough (8) of body.

3, a kind of stroke demonstration device according to claim 1 is characterized in that described cogwheel gearing by support (110), fixed connecting rod (111), and gear (112) is formed with axle (113); Motor is through gear and axle, by speed ratio is a constant, a driving wheel of transmission (12) and hour hands (14), minute hand (15), and cross wheel apparatus (114) through one again, another driving wheel of transmission (12), the attached plate of the supporting of its third wheel (116), depression bar (117), offset cam and axle (118), control lever (119), back-moving spring (120); Described third wheel is contained in the slotted hole that supports attached plate and support (110) (121) with axle, driving wheel, supporting attached plate is hinged on the support by screw (122), adorning a back-moving spring thereon with on the support, on the attached plate of supporting, adorning depression bar, and pass the connecting link hole, and an offset cam and axle are housed on the support on its top, on its axle a control lever are housed.

4, a kind of stroke demonstration device according to claim 1 is characterized in that described warning device by shell (26), and circuit board in the shell and battery case are formed.