CN201122370Y

CN201122370Y - Improved electricity demonstration board

Info

Publication number: CN201122370Y
Application number: CNU2007200090075U
Authority: CN
Inventors: 张帆远
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-06
Filing date: 2007-12-06
Publication date: 2008-09-24
Anticipated expiration: 2017-12-06

Abstract

The utility model discloses an improved electricity demonstration board. The utility model is characterized in that the improved electricity demonstration board comprises an iron demonstration board and a fixed back board, wherein, the fixed back board is provided with a plurality of through holes, a magnetic block is stuck at the position corresponding to the through holes, the back side of the iron demonstration board is absorbed on the magnetic block, and the iron demonstration board is fixed and connected into a whole with the fixed back board. The improved electricity demonstration board also comprises an iron L-shaped object shelf, a plurality of magnetic blocks are fixed and connected at the back side at one side of the iron L-shaped object shelf, the magnetic blocks are absorbed on the front surface of the iron demonstration board, and the iron demonstration board is fixed and connected with the iron L-shaped object shelf. Compared with the prior art, as long as the circuit elements are iron circuit elements, the circuit elements can be steadily absorbed at the fixed positions; all elements and teaching aids which cannot be easily absorbed can be arranged on the iron L-shaped object shelf, and by arbitrarily moving the positions and changing the angle, the objects can be in the optimum visual angle of students, therefore, the improved electricity demonstration board is favorable for teaching.

Description

Improved electricity demonstration board

Technical field

The utility model relates to a kind of teaching aid, refers in particular to the improvement of electricity demonstration board.

Background technology

The circuit of junior physics electricity part and the demonstration of connection thereof, comprise that series circuit is to changing current strength with slide rheostat, amount to seven demonstrations that are associated, all need be by demonstration board, and each class of traditional demonstration board or can only do a demonstration each time, and must circuit components such as resistance, miniature bulb position in accordance with regulations be locked on the wooden demonstration board one by one with screw by the requirement of circuit diagram, when demonstrating next time, then must unload them one by one down again and tighten up a screw by new circuit diagram screw lock again, so during repeatable operation, loaded down with trivial details and demonstration efficient is low.A kind of Teaching aid for electricity is arranged at present, consult Chinese patent literature in disclosed CN2904169Y on May 23rd, 2007 Teaching aid for electricity, described magnet board body does not have magnetic, must be in circuit component bottom fixing small magnet sheet, but much element and teaching aid all can't find certain plane to be stained with the small magnet sheet.In addition, after demonstration finished, all absorption element was onboard placed nearlyer meeting and is inhaled into one, distance takes up room again a bit, and bigger defective is an element in case inhale on demonstration board, can only the shift position, but can't arbitrarily change angle, allow the student be in best visual effect at any time.

The utility model content

At the defective that exists in the prior art, the utility model provides a kind of improved electricity demonstration board, the circuit component of all ironys of absorption that this demonstration board can surely lean on, simultaneously, can demonstrate magnetic patch and not adsorb or adsorb not firm circuit component, and random shift position and change angle.

For achieving the above object, technical solutions of the utility model are:

Improved electricity demonstration board comprises an irony demonstration board, a stationary backplate, and described stationary backplate has plurality of through holes, and corresponding lead to the hole site is adhesive with magnetic patch, and the irony demonstration board back side is adsorbed on the magnetic patch, and irony demonstration board and stationary backplate fix as one.

Also comprise the L shaped rack of an irony, the one side back side is fixedly connected with a plurality of magnetic patch, and magnetic patch is adsorbed on irony demonstration board front, and the L shaped rack of irony demonstration board and irony is affixed.

The usefulness of technique scheme is:

Compared with prior art, so long as having part, the circuit of irony all can firmly be adsorbed on fixing position; Every element that is difficult for being adsorbed and teaching aid all can place on the L shaped rack of irony, and arbitrarily shift position and change angle so that object is in the visual angle of student's the best, are convenient to teaching.

Description of drawings

Fig. 1 is the utility model structure cut-open view;

Fig. 2 is the utility model stationary backplate and the bonding synoptic diagram of magnetic patch.

Embodiment

The utility model now is described in conjunction with the accompanying drawings and embodiments.

As Fig. 1, improved electricity demonstration board shown in 2, comprise an irony demonstration board 3, one stationary backplate 1, the irony demonstration board can adopt described on the market now magnet board, yet, described magnet board does not have magnetic in fact, in order to make it have magnetic, the utility model has adopted following technical scheme: described stationary backplate 1 is wood panel, has plurality of through holes 11 on it, be filled with multi-purpose adhesive in the through hole 11, corresponding through hole 11 positions are adhesive with magnetic patch 2, and irony demonstration board 3 back sides are adsorbed on the magnetic patch 2, and irony demonstration board 3 fixes as one with wooden stationary backplate 1.Thus, so long as having part, the circuit of irony all can not be attracted to fixing position.But not every circuit component and teaching aid all are ironys, can be adsorbed one by one, therefore the utility model is provided with the L shaped rack 5 of an irony in addition, for making absorption affinity stronger, be fixedly connected with a plurality of magnetic patch 4 at the one side back side, magnetic patch 4 is adsorbed on irony demonstration board 3 fronts, L shaped rack 5 firm being fixed on the irony demonstration board 3 of irony.So, every element that is difficult for being adsorbed and teaching aid all can placed on itly be imparted knowledge to students, and random shift position and change angle, are in the visual angle of student's the best with object.

Above-mentioned demonstration board also can cooperate projector to carry out classroom instruction, and better effects if as long as regulate the mercury slug that camera makes it to aim at index dial or thermometer, just mirrors on the screen and amplifies and the lifting of scale and mercury slug clearly, and directly perceived and lively, teaching efficiency is splendid.

Claims

1, improved electricity demonstration board, it is characterized in that: comprise an irony demonstration board, a stationary backplate, described stationary backplate has plurality of through holes, and corresponding lead to the hole site is adhesive with magnetic patch, the irony demonstration board back side is adsorbed on the magnetic patch, and irony demonstration board and stationary backplate fix as one.

2, improved electricity demonstration board as claimed in claim 1 is characterized in that: also comprise the L shaped rack of an irony, the one side back side is fixedly connected with a plurality of magnetic patch, and magnetic patch is adsorbed on irony demonstration board front, and the L shaped rack of irony demonstration board and irony is affixed.