CN209625557U - Polyhedral model presentation device in a kind of mathematical education - Google Patents

Polyhedral model presentation device in a kind of mathematical education Download PDF

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Publication number
CN209625557U
CN209625557U CN201820974349.9U CN201820974349U CN209625557U CN 209625557 U CN209625557 U CN 209625557U CN 201820974349 U CN201820974349 U CN 201820974349U CN 209625557 U CN209625557 U CN 209625557U
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China
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installing frame
bull stick
respectively connected
motor
right sides
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Expired - Fee Related
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CN201820974349.9U
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Chinese (zh)
Inventor
张峰
朱道伦
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Individual
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Individual
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Abstract

The utility model relates to polyhedral model presentation devices in a kind of presentation device more particularly to a kind of mathematical education.Therefore, it is the technical issues of the utility model: one kind is provided and can while rotation displaying be carried out to multiple polyhedral models, and multiple polyhedrons can be allowed also to will do it polyhedral model presentation device in the mathematical education integrally rotated together while rotation.Implementer's case of the utility model are as follows: polyhedral model presentation device in a kind of mathematical education, includes installing frame etc.;It is connected with rotating mechanism in installing frame, is equipped with placement mechanism on the upside of rotating mechanism.The utility model, which has reached, can while carry out rotation displaying to multiple polyhedral models, and multiple polyhedrons can be allowed also to will do it the effect integrally rotated together while rotation, and the setting of transparent ring baffle can prevent polyhedron from sliding.

Description

Polyhedral model presentation device in a kind of mathematical education
Technical field
The utility model relates to polyhedral model presentation devices in a kind of presentation device more particularly to a kind of mathematical education.
Background technique
The solid that will be surrounded by several polygons is called polyhedron, and polyhedron in mathematical education, can by teacher Polyhedral property and meating and use etc. are said, also just needs to show polyhedral model, is conducive to impart knowledge to students in this way, and it is existing Polyhedron presentation device still compare in existing most mathematical education place it is rare, be all held by math teacher it is more Face body is imparted knowledge to students, and teacher holds student when polyhedron carries out teaching displaying and can not comprehensively, intuitively observe, to reduce religion Quality is learned, and teacher holds polyhedron hand for a long time and is easy fatigue.
Utility model content
Rotation displaying can not be carried out to multiple polyhedral models simultaneously in the prior art to overcome, and can not allowed multiple Polyhedron also will do it whole the shortcomings that rotating together while rotation, and therefore, the technical issues of the utility model is: providing One kind can carry out rotation displaying to multiple polyhedral models simultaneously, and multiple polyhedrons can be allowed also to will do it while rotation Polyhedral model presentation device in the mathematical education integrally rotated together.
Implementer's case of the utility model are as follows: polyhedral model presentation device in a kind of mathematical education includes peace It frames up, rotating mechanism and placement mechanism, rotating mechanism is connected in installing frame, is equipped with placement mechanism on the upside of rotating mechanism.
Optionally, rotating mechanism includes first motor, pinion gear, gear wheel, bull stick, first bearing seat and second bearing , two walls are symmetrical above and below in installing frame or so is connected with first bearing seat, is all connected between the first bearing seat of the left and right sides There is second bearing seat, is respectively connected with bull stick in the interior second bearing seat with upper and lower two sides of the first bearing seat of upper and lower two sides, left and right The bull stick bottom of two sides is respectively connected with pinion gear, and the bull stick bottom at middle part is connected with gear wheel, and gear wheel is engaged with pinion gear, peace The bottom inside that frames up is equipped with first motor, and the output shaft of first motor and the bull stick at middle part connect.
Optionally, placement mechanism includes transparent ring baffle, rubber pad, support rod, placement plate and inserted link, bull stick top It is provided with the first groove, is equipped with support rod at the top of bull stick, support rod bottom is respectively connected with inserted link, and inserted link is respectively positioned on the first groove Interior, support bar top is respectively connected with placement plate, transparent ring baffle is respectively connected at the top of placement plate, transparent ring baffle inside is It is connected with rubber pad.
It optionally, further include having the first fixed block, sliding block, rotating plate, the second motor and endless glide, installation frame bottom or so Two sides are respectively connected with the first fixed block, and installation frame bottom is equipped with endless glide, and endless glide is located at immediately below installing frame, and annular is sliding The left and right sides slidingtype is connected with sliding block on rail, and slider top is connected with rotating plate, and the left and right sides is provided with second at the top of rotating plate Groove, the first fixed block of the left and right sides are located in the second groove of the left and right sides, are equipped with second in the middle part of endless glide The output shaft of motor, the second motor is connect with rotating plate bottom centre.
Optionally, further include having commander's bar and the second fixed block, be connected with the second fixed block on the upside of installing frame left wall, second It is provided with through-hole on fixed block, commander's bar is equipped in through-hole, commander's bar passes through through-hole.
When needing to be shown polyhedral model using this presentation device, user of service can place polyhedral model On placement mechanism, then enables rotating mechanism and placement mechanism is driven to be rotated, to carry out rotary type to polyhedral model It shows.
Because rotating mechanism includes first motor, pinion gear, gear wheel, bull stick, first bearing seat and second bearing seat, Two walls are symmetrical above and below for left and right in installing frame is connected with first bearing seat, and the is respectively connected between the first bearing seat of the left and right sides Two bearing bracket, in the first bearing seats of upper and lower two sides be respectively connected with bull stick, the left and right sides in the second bearing seat of upper and lower two sides Bull stick bottom be respectively connected with pinion gear, the bull stick bottom at middle part is connected with gear wheel, and gear wheel is engaged with pinion gear, installing frame Bottom inside is equipped with first motor, and the output shaft of first motor and the bull stick at middle part connect, when user of service needs polyhedron When being rotated, user of service needs to enable first motor and drives bull gear drive, and gear wheel drives the pinion gear of the left and right sides Rotation, so that bull stick is rotated, and bar rotation can drive placement mechanism to be rotated, and can also drive polyhedron Model carries out rotary type displaying and facilitates teachers ' teaching to facilitate student that the different one sides of polyhedral model can be seen, and uses First motor is turned off after complete.
Because placement mechanism includes transparent ring baffle, rubber pad, support rod, placement plate and inserted link, bull stick top is It is provided with the first groove, is equipped with support rod at the top of bull stick, support rod bottom is respectively connected with inserted link, and inserted link is respectively positioned on the first groove Interior, support bar top is respectively connected with placement plate, transparent ring baffle is respectively connected at the top of placement plate, transparent ring baffle inside is It is connected with rubber pad, when user of service is shown polyhedral model, polyhedral model can be placed on rubber by user of service On rubber mat, then inserted link is inserted into the first groove again, so that bull stick drives support rod rotation, and support rod rotates Placement plate is driven to be rotated, so that polyhedral model be driven to carry out rotation displaying, after having shown, user of service can also be incited somebody to action Inserted link is extracted out of first groove, would not also occupy many spaces, and the setting of transparent ring baffle can prevent polyhedron sliding It falls.
Because further including having the first fixed block, sliding block, rotating plate, the second motor and endless glide, installation frame bottom or so two Side is respectively connected with the first fixed block, and installation frame bottom is equipped with endless glide, and endless glide is located at immediately below installing frame, endless glide The upper equal slidingtype in the left and right sides is connected with sliding block, and slider top is connected with rotating plate, and it is recessed to be provided with second for the left and right sides at the top of rotating plate Slot, the first fixed block of the left and right sides are located in the second groove of the left and right sides, and the second electricity is equipped in the middle part of endless glide The output shaft of machine, the second motor is connect with rotating plate bottom centre, when user of service need multiple bull sticks on installing frame simultaneously into When row unitary rotation, the first fixed block can be placed in the second groove by user of service, then enable the second motor band turn again Plate is rotated, so that the object on installing frame is rotated, and the rotation for the rotating plate being arranged is so that polyhedral model exists When carrying out rotation displaying, it can also integrally rotate together and be shown, also just facilitate teaching, allow the student on different location to see more Face body turns off the second motor after having used.
Because further including having commander's bar and the second fixed block, the second fixed block is connected on the upside of installing frame left wall, second is solid Determine to be provided with through-hole on block, commander's bar is equipped in through-hole, commander's bar passes through through-hole, and commander's bar of setting can allow mathematics teacher to hold finger It swings and polyhedral multiple faces is indicated, student concentration can be helped.
Compared with prior art, the utility model have the advantages that the utility model reached can simultaneously to multiple more Face body Model carries out rotation displaying, and multiple polyhedrons can be allowed also to will do it the effect integrally rotated together while rotation The setting of fruit, transparent ring baffle can prevent polyhedron from sliding, and the rotation of the rotating plate of setting is so that polyhedral model is carrying out certainly When turning to show, it can also integrally rotate together and be shown, also just facilitate teaching, the student on different location is allowed to see polyhedron mould Type, commander's bar of setting can allow mathematics teacher to hold commander's bar and indicate polyhedral multiple faces, student can be helped to concentrate Attention.
Detailed description of the invention
Fig. 1 is the first schematic view of the front view of the utility model.
Fig. 2 is second of schematic view of the front view of the utility model.
Fig. 3 is the third schematic view of the front view of the utility model.
The meaning of appended drawing reference in figure: 1: installing frame, 2: rotating mechanism, 21: first motor, 22: pinion gear, 23: canine tooth Wheel, 24: bull stick, 25: first bearing seat, 26: second bearing seat, 3: placement mechanism, 31: transparent ring baffle, 32: rubber pad, 33: support rod, 34: placement plate, 35: the first grooves, 36: inserted link, 4: the first fixed blocks, 5: sliding block, 6: the second grooves, 7: turning Plate, 8: the second motors, 9: endless glide, 10: through-hole, 11: commander's bar, 12: the second fixed blocks.
Specific embodiment
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 Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1
Polyhedral model presentation device in a kind of mathematical education, as shown in Figure 1-3, include installing frame 1, rotating mechanism 2 With placement mechanism 3, it is connected with rotating mechanism 2 in installing frame 1, is equipped with placement mechanism 3 on the upside of rotating mechanism 2.
Embodiment 2
Polyhedral model presentation device in a kind of mathematical education, as shown in Figure 1-3, include installing frame 1, rotating mechanism 2 With placement mechanism 3, it is connected with rotating mechanism 2 in installing frame 1, is equipped with placement mechanism 3 on the upside of rotating mechanism 2.
Rotating mechanism 2 includes first motor 21, pinion gear 22, gear wheel 23, bull stick 24, first bearing seat 25 and second Bearing block 26, two walls are symmetrical above and below for left and right in installing frame 1 is connected with first bearing seat 25, the first bearing seat 25 of the left and right sides Between be respectively connected with second bearing seat 26, in the first bearing seat 25 of upper and lower two sides in the second bearing seat 26 of upper and lower two sides It is connected with bull stick 24,24 bottom of bull stick of the left and right sides is respectively connected with pinion gear 22, and 24 bottom of bull stick at middle part is connected with canine tooth Wheel 23, gear wheel 23 is engaged with pinion gear 22, and 1 bottom inside of installing frame is equipped with first motor 21, the output of first motor 21 Axis and the bull stick at middle part 24 connect.
Embodiment 3
Polyhedral model presentation device in a kind of mathematical education, as shown in Figure 1-3, include installing frame 1, rotating mechanism 2 With placement mechanism 3, it is connected with rotating mechanism 2 in installing frame 1, is equipped with placement mechanism 3 on the upside of rotating mechanism 2.
Rotating mechanism 2 includes first motor 21, pinion gear 22, gear wheel 23, bull stick 24, first bearing seat 25 and second Bearing block 26, two walls are symmetrical above and below for left and right in installing frame 1 is connected with first bearing seat 25, the first bearing seat 25 of the left and right sides Between be respectively connected with second bearing seat 26, in the first bearing seat 25 of upper and lower two sides in the second bearing seat 26 of upper and lower two sides It is connected with bull stick 24,24 bottom of bull stick of the left and right sides is respectively connected with pinion gear 22, and 24 bottom of bull stick at middle part is connected with canine tooth Wheel 23, gear wheel 23 is engaged with pinion gear 22, and 1 bottom inside of installing frame is equipped with first motor 21, the output of first motor 21 Axis and the bull stick at middle part 24 connect.
Placement mechanism 3 includes transparent ring baffle 31, rubber pad 32, support rod 33, placement plate 34 and inserted link 36, bull stick 24 tops are provided with the first groove 35, and support rod 33 is equipped at the top of bull stick 24, and 33 bottom of support rod is respectively connected with inserted link 36, insert Bar 36 is respectively positioned in the first groove 35, and placement plate 34 is respectively connected at the top of support rod 33, is respectively connected at the top of placement plate 34 transparent Ring baffle 31 is respectively connected with rubber pad 32 on the inside of transparent ring baffle 31.
Embodiment 4
Polyhedral model presentation device in a kind of mathematical education, as shown in Figure 1-3, include installing frame 1, rotating mechanism 2 With placement mechanism 3, it is connected with rotating mechanism 2 in installing frame 1, is equipped with placement mechanism 3 on the upside of rotating mechanism 2.
Rotating mechanism 2 includes first motor 21, pinion gear 22, gear wheel 23, bull stick 24, first bearing seat 25 and second Bearing block 26, two walls are symmetrical above and below for left and right in installing frame 1 is connected with first bearing seat 25, the first bearing seat 25 of the left and right sides Between be respectively connected with second bearing seat 26, in the first bearing seat 25 of upper and lower two sides in the second bearing seat 26 of upper and lower two sides It is connected with bull stick 24,24 bottom of bull stick of the left and right sides is respectively connected with pinion gear 22, and 24 bottom of bull stick at middle part is connected with canine tooth Wheel 23, gear wheel 23 is engaged with pinion gear 22, and 1 bottom inside of installing frame is equipped with first motor 21, the output of first motor 21 Axis and the bull stick at middle part 24 connect.
Placement mechanism 3 includes transparent ring baffle 31, rubber pad 32, support rod 33, placement plate 34 and inserted link 36, bull stick 24 tops are provided with the first groove 35, and support rod 33 is equipped at the top of bull stick 24, and 33 bottom of support rod is respectively connected with inserted link 36, insert Bar 36 is respectively positioned in the first groove 35, and placement plate 34 is respectively connected at the top of support rod 33, is respectively connected at the top of placement plate 34 transparent Ring baffle 31 is respectively connected with rubber pad 32 on the inside of transparent ring baffle 31.
It further include having the first fixed block 4, sliding block 5, rotating plate 7, the second motor 8 and endless glide 9,1 bottom of installing frame or so Two sides are respectively connected with the first fixed block 4, and 1 bottom of installing frame is equipped with endless glide 9, and endless glide 9 is located at immediately below installing frame 1, The left and right sides slidingtype is connected with sliding block 5 in endless glide 9, and rotating plate 7, the 7 top left and right sides of rotating plate are connected at the top of sliding block 5 It is provided with the second groove 6, the first fixed block 4 of the left and right sides is located in the second groove 6 of the left and right sides, endless glide 9 Middle part is equipped with the second motor 8, and the output shaft of the second motor 8 is connect with 7 bottom centre of rotating plate.
Embodiment 5
Polyhedral model presentation device in a kind of mathematical education, as shown in Figure 1-3, include installing frame 1, rotating mechanism 2 With placement mechanism 3, it is connected with rotating mechanism 2 in installing frame 1, is equipped with placement mechanism 3 on the upside of rotating mechanism 2.
Rotating mechanism 2 includes first motor 21, pinion gear 22, gear wheel 23, bull stick 24, first bearing seat 25 and second Bearing block 26, two walls are symmetrical above and below for left and right in installing frame 1 is connected with first bearing seat 25, the first bearing seat 25 of the left and right sides Between be respectively connected with second bearing seat 26, in the first bearing seat 25 of upper and lower two sides in the second bearing seat 26 of upper and lower two sides It is connected with bull stick 24,24 bottom of bull stick of the left and right sides is respectively connected with pinion gear 22, and 24 bottom of bull stick at middle part is connected with canine tooth Wheel 23, gear wheel 23 is engaged with pinion gear 22, and 1 bottom inside of installing frame is equipped with first motor 21, the output of first motor 21 Axis and the bull stick at middle part 24 connect.
Placement mechanism 3 includes transparent ring baffle 31, rubber pad 32, support rod 33, placement plate 34 and inserted link 36, bull stick 24 tops are provided with the first groove 35, and support rod 33 is equipped at the top of bull stick 24, and 33 bottom of support rod is respectively connected with inserted link 36, insert Bar 36 is respectively positioned in the first groove 35, and placement plate 34 is respectively connected at the top of support rod 33, is respectively connected at the top of placement plate 34 transparent Ring baffle 31 is respectively connected with rubber pad 32 on the inside of transparent ring baffle 31.
It further include having the first fixed block 4, sliding block 5, rotating plate 7, the second motor 8 and endless glide 9,1 bottom of installing frame or so Two sides are respectively connected with the first fixed block 4, and 1 bottom of installing frame is equipped with endless glide 9, and endless glide 9 is located at immediately below installing frame 1, The left and right sides slidingtype is connected with sliding block 5 in endless glide 9, and rotating plate 7, the 7 top left and right sides of rotating plate are connected at the top of sliding block 5 It is provided with the second groove 6, the first fixed block 4 of the left and right sides is located in the second groove 6 of the left and right sides, endless glide 9 Middle part is equipped with the second motor 8, and the output shaft of the second motor 8 is connect with 7 bottom centre of rotating plate.
Further include having commander's bar 11 and the second fixed block 12, is connected with the second fixed block 12 on the upside of 1 left wall of installing frame, second It is provided with through-hole 10 on fixed block 12, commander's bar 11 is equipped in through-hole 10, commander's bar 11 passes through through-hole 10.
When needing to be shown polyhedral model using this presentation device, user of service can place polyhedral model On placement mechanism 3, then enables rotating mechanism 2 and placement mechanism 3 is driven to be rotated, to be rotated to polyhedral model Formula is shown.
Because rotating mechanism 2 includes first motor 21, pinion gear 22, gear wheel 23, bull stick 24,25 and of first bearing seat Second bearing seat 26, two walls are symmetrical above and below for left and right in installing frame 1 is connected with first bearing seat 25, the first bearing of the left and right sides Second bearing seat 26, the interior second bearing seat 26 with upper and lower two sides of the first bearing seat 25 of upper and lower two sides are respectively connected between seat 25 It is inside respectively connected with bull stick 24,24 bottom of bull stick of the left and right sides is respectively connected with pinion gear 22, and 24 bottom of bull stick at middle part is connected with Gear wheel 23, gear wheel 23 are engaged with pinion gear 22, and 1 bottom inside of installing frame is equipped with first motor 21, first motor 21 Output shaft and the bull stick at middle part 24 connect, and when user of service needs polyhedron to rotate, user of service needs to enable first Motor 21 drives gear wheel 23 to rotate, and gear wheel 23 drives the pinion gear 22 of the left and right sides to rotate, so that bull stick 24 carries out Rotation, and the rotation of bull stick 24 can drive placement mechanism 3 to be rotated, and polyhedral model can also be driven to carry out rotary type exhibition Show, to facilitate student that the different one sides of polyhedral model can be seen, facilitate teachers ' teaching, first is turned off after having used Motor 21.
Because placement mechanism 3 includes transparent ring baffle 31, rubber pad 32, support rod 33, placement plate 34 and inserted link 36, 24 top of bull stick is provided with the first groove 35, support rod 33 is equipped at the top of bull stick 24,33 bottom of support rod is respectively connected with inserted link 36, inserted link 36 is respectively positioned in the first groove 35, and placement plate 34 is respectively connected at the top of support rod 33, is respectively connected at the top of placement plate 34 Transparent ring baffle 31 is respectively connected with rubber pad 32 on the inside of transparent ring baffle 31, when user of service carries out polyhedral model When displaying, polyhedral model can be placed on rubber pad 32 by user of service, and then inserted link 36 is inserted into the first groove 35 again, So that bull stick 24 drives support rod 33 to rotate, and the rotation of support rod 33 can drive placement plate 34 to be rotated, thus band Dynamic polyhedral model carries out rotation displaying, and after having shown, user of service can also extract inserted link 36 out of first groove 35, Also many spaces would not be occupied, the setting of transparent ring baffle 31 can prevent polyhedron from sliding.
Because further including having the first fixed block 4, sliding block 5, rotating plate 7, the second motor 8 and endless glide 9,1 bottom of installing frame The left and right sides is respectively connected with the first fixed block 4, and 1 bottom of installing frame is equipped with endless glide 9, under endless glide 9 is located at installing frame 1 just Square, the left and right sides slidingtype is connected with sliding block 5 in endless glide 9, and rotating plate 7, left and right at the top of rotating plate 7 are connected at the top of sliding block 5 Two sides are provided with the second groove 6, and the first fixed block 4 of the left and right sides is located in the second groove 6 of the left and right sides, and annular is sliding Second motor 8 is installed, the output shaft of the second motor 8 is connect with 7 bottom centre of rotating plate, when user of service needs to pacify in the middle part of rail 9 Frame up multiple bull sticks 24 on 1 while when carrying out unitary rotation, and the first fixed block 4 can be placed on the second groove 6 by user of service It is interior, the second motor 8 is then enabled again, rotating plate 7 is driven to be rotated, so that the object on installing frame 1 is rotated, and set The rotation for the rotating plate 7 set is so that polyhedral model can also be rotated together integrally and be shown when carrying out rotation displaying, also with regard to side Just it imparts knowledge to students, the student on different location is allowed to see polyhedron, the second motor 8 is turned off after having used.
Because further including having commander's bar 11 and the second fixed block 12, it is connected with the second fixed block 12 on the upside of 1 left wall of installing frame, It is provided with through-hole 10 on second fixed block 12, commander's bar 11 is equipped in through-hole 10, commander's bar 11 passes through through-hole 10, commander's bar of setting 11, which can allow mathematics teacher to hold commander's bar 11, indicates polyhedral multiple faces, can help student concentration.
It should be understood by those skilled in the art that above-described embodiment does not limit the utility model, all uses in any form The mode of equivalent substitution or equivalent transformation technical solution obtained, all falls in the protection scope of the utility model.

Claims (1)

1. polyhedral model presentation device in a kind of mathematical education, feature are being: including installing frame (1), rotating mechanism (2) With placement mechanism (3), installing frame (1) is interior to be connected with rotating mechanism (2), is equipped with placement mechanism (3) on the upside of rotating mechanism (2);Turn Motivation structure (2) includes first motor (21), pinion gear (22), gear wheel (23), bull stick (24), first bearing seat (25) and Two bearing bracket (26), two walls are symmetrical above and below for left and right in installing frame (1) is connected with first bearing seat (25), and the first of the left and right sides It is respectively connected between bearing block (25) second bearing seat (26), with the of upper and lower two sides in the first bearing seats (25) of upper and lower two sides It is respectively connected with bull stick (24) in two bearing bracket (26), bull stick (24) bottom of the left and right sides is respectively connected with pinion gear (22), middle part Bull stick (24) bottom be connected with gear wheel (23), gear wheel (23) is engaged with pinion gear (22), installing frame (1) bottom inside peace Equipped with first motor (21), the output shaft of first motor (21) and the bull stick (24) at middle part;Placement mechanism (3) includes transparent ring Shape baffle (31), rubber pad (32), support rod (33), placement plate (34) and inserted link (36), bull stick (24) top are provided with first Groove (35), bull stick (24) top are equipped with support rod (33), and support rod (33) bottom is respectively connected with inserted link (36), inserted link (36) It is respectively positioned in the first groove (35), is respectively connected with placement plate (34) at the top of support rod (33), is respectively connected at the top of placement plate (34) Transparent ring baffle (31), transparent ring baffle (31) inside are respectively connected with rubber pad (32);It further include having the first fixed block (4), sliding block (5), rotating plate (7), the second motor (8) and endless glide (9) are respectively connected with the at left and right sides of installing frame (1) bottom One fixed block (4), installing frame (1) bottom are equipped with endless glide (9), and endless glide (9) is located at immediately below installing frame (1), annular The left and right sides slidingtype is connected with sliding block (5) on sliding rail (9), is connected with rotating plate (7) at the top of sliding block (5), rotating plate (7) top left Right two sides are provided with the second groove (6), and the first fixed block (4) of the left and right sides is located at the second groove (6) of the left and right sides It is interior, it is equipped with the second motor (8) in the middle part of endless glide (9), the output shaft of the second motor (8) is connect with rotating plate (7) bottom centre; Further include having commander's bar (11) and the second fixed block (12), is connected with the second fixed block (12) on the upside of installing frame (1) left wall, second It is provided on fixed block (12) through-hole (10), commander bar (11) is equipped in through-hole (10), commander bar (11) passes through through-hole (10).
CN201820974349.9U 2018-06-25 2018-06-25 Polyhedral model presentation device in a kind of mathematical education Expired - Fee Related CN209625557U (en)

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CN201820974349.9U CN209625557U (en) 2018-06-25 2018-06-25 Polyhedral model presentation device in a kind of mathematical education

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Application Number Priority Date Filing Date Title
CN201820974349.9U CN209625557U (en) 2018-06-25 2018-06-25 Polyhedral model presentation device in a kind of mathematical education

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111904224A (en) * 2020-09-24 2020-11-10 嘉兴市迅程信息技术有限公司 Notebook product showcase with high-accommodation multi-selection type

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111904224A (en) * 2020-09-24 2020-11-10 嘉兴市迅程信息技术有限公司 Notebook product showcase with high-accommodation multi-selection type

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Granted publication date: 20191112

Termination date: 20200625