CN216014561U

CN216014561U - Demonstration instrument for middle school physics teaching

Info

Publication number: CN216014561U
Application number: CN202122299342.6U
Authority: CN
Inventors: 蒋绍全; 尚雪丽
Original assignee: Yunnan Normal University
Current assignee: Yunnan Normal University
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-03-11
Anticipated expiration: 2031-09-18

Abstract

The utility model discloses a demonstration instrument for middle school physics teaching, which comprises a bottom block, wherein a lifting rod is fixedly arranged at the top of the bottom block, a fixed block is fixedly arranged at the top of the lifting rod, a mounting groove is arranged on the front side of the fixed block, a placing groove is arranged at the middle position of the mounting groove, a demonstration instrument is arranged in the placing groove, a protection plate is arranged on the front side of the fixed block in a vertical sliding manner, first telescopic rods are respectively and fixedly arranged on two sides of the bottom of the mounting groove, a second telescopic rod is fixedly arranged on the inner wall of the first telescopic rod, a second positioning block is fixedly connected with the telescopic end of the second telescopic rod, a second compression spring is sleeved on the second telescopic rod, a first clamping plate is fixedly arranged at the lower end of the front side of the fixed block, a second clamping plate is fixedly arranged at the lower end of the back side of the protection plate, the first clamping plate and the second clamping plate are in spacing fit, the utility model solves the problems that most of the existing demonstration instruments are not provided with protection devices, and the demonstration instruments are directly exposed outside when not used, the problem of collision easily occurs.

Description

Demonstration instrument for middle school physics teaching

Technical Field

The utility model relates to a physical teaching technical field especially relates to a demonstration instrument of middle school physics teaching.

Background

Physics, which is the principle of everything, refers to the internal law of things and the theory of things, is the natural science for studying the structure, interaction and movement of substances, and is a natural science based on experiments and observations, indicating the theory of things in the scientific community.

The demonstration instrument needs to be used during middle school physics teaching, and present demonstration instrument does not mostly set up protection device, and the demonstration instrument not time spent directly exposes outside, bumps easily, consequently the utility model provides a middle school physics teaching's demonstration instrument solves the problem.

SUMMERY OF THE UTILITY MODEL

The utility model provides a demonstration instrument of middle school physics teaching to the not enough of prior art existence, concrete technical scheme as follows:

a demonstration instrument for middle school physics teaching comprises a bottom block, wherein a lifting rod is fixedly arranged at the top of the bottom block, a fixed block is fixedly arranged at the top of the lifting rod, a mounting groove is formed in the front of the fixed block, a demonstration instrument is arranged at the bottom in the mounting groove, a protection plate is arranged on the front of the fixed block in a vertical sliding manner, first telescopic rods are fixedly arranged on two sides of the bottom of the mounting groove respectively, a first positioning block is fixedly arranged at the top end of the first telescopic rod, a first compression spring is sleeved on the first telescopic rod, a second telescopic rod is fixedly arranged on the inner wall of the first positioning block, a second positioning block is fixedly connected with the telescopic end of the second telescopic rod, a second compression spring is sleeved on the second telescopic rod, the second positioning block is fixedly connected with the protection plate, a first clamping plate is fixedly arranged at the lower end of the front of the fixed block, and a second clamping plate is fixedly arranged at the lower end of the back of the protection plate, the first clamping plate is in limit fit with the second clamping plate.

Preferably, the four corners of the bottom block are respectively and fixedly provided with universal wheels, and the universal wheels are provided with brake mechanisms.

Preferably, the lifter includes the dead lever, the dead lever is fixed to be set up the bottom block, the dead lever top is inserted and is equipped with the movable rod, movable rod top fixed connection the fixed block, dead lever upper end one side is provided with the elasticity screw rod, the elasticity screw rod with dead lever screw-thread fit, the movable rod is through screwing the elasticity screw rod supports fixedly.

Preferably, the longitudinal section of the protection plate is L-shaped.

Compared with the prior art, the utility model beneficial effect who has is:

1. through the structures of the demonstration instrument, the protection plate, the first compression spring, the second compression spring and the like, when the demonstration instrument is not used, the hand-pulled protection plate moves downwards, the protection plate is pulled outwards at the same time, and the second clamping plate is clamped below the first clamping plate under the action of the restoring force of the second compression spring after the hand is loosened;

2. through the movable rod and the dead lever isotructure that set up, according to the needs of demonstration appearance height, adjust the degree of depth that the movable rod inserted in the dead lever, the movable rod supports fixedly through the elasticity screw rod of screwing, and then adjusts the height of demonstration appearance, and demonstration appearance altitude mixture control is convenient.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a front view of a demonstration instrument for middle school physics teaching according to the present invention;

FIG. 2 is a front view of a demonstration instrument for middle school physics teaching provided by the present invention when no protection plate is provided;

FIG. 3 is an enlarged schematic view of section A of FIG. 1 according to the present invention;

fig. 4 is a schematic view of a connection structure of a first positioning block and a second positioning block in a demonstration instrument for middle school physics teaching according to the present invention;

fig. 5 is the utility model provides a back view of guard plate in the demonstration instrument of middle school physics teaching.

In the figure: the device comprises a protection plate 1, a fixing block 2, a second compression spring 3, a second telescopic rod 4, a mounting groove 5, a universal wheel 6, a demonstration instrument 7, a first compression spring 8, a first telescopic rod 9, a first clamping plate 10, a second clamping plate 11, a movable rod 12, a fixed rod 13, a brake mechanism 14, a tightening screw 15, a bottom block 16, a first positioning block 17 and a second positioning block 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-5, a demonstration instrument for middle school physical teaching comprises a bottom block 16, a lifting rod is fixedly arranged at the top of the bottom block 16, a fixed block 2 is fixedly arranged at the top of the lifting rod, a mounting groove 5 is formed in the front of the fixed block 2, a demonstration instrument 7 is arranged at the bottom of the mounting groove 5, a protection plate 1 is arranged on the front of the fixed block 2 in a vertical sliding manner, the longitudinal section of the protection plate 1 is in an L shape, first telescopic rods 9 are respectively and fixedly arranged at two sides of the bottom of the mounting groove 5, a first positioning block 17 is fixedly arranged at the top end of the first telescopic rod 9, a first compression spring 8 is sleeved on the first telescopic rod 9, a second telescopic rod 4 is fixedly arranged on the inner wall of the first positioning block 17, a second positioning block 18 is fixedly connected with the telescopic end of the second telescopic rod 4, a second compression spring 3 is sleeved on the second telescopic rod 4, the second positioning block 18 is fixedly connected with the protection plate 1, and a first clamping plate 10 is fixedly arranged at the lower end of the front of the fixed block 2, the fixed second cardboard 11 that is provided with of protection plate 1 back lower extreme, the spacing cooperation of first cardboard 10 and

second cardboard

11, 16 four corners of bottom block are fixed respectively and are provided with universal wheel 6, are provided with brake mechanism 14 on the universal wheel 6.

During the use, 7 removal to suitable position of demonstration appearance in the effect of universal wheel 6, and through 14 fixed universal wheels 6 of brake mechanism, it is convenient that demonstration appearance 7 removes, demonstration appearance 7 is not the time spent, hand power guard plate 1 moves down, simultaneously outwards pull guard plate 1, under the effect of 3 restoring forces of second compression spring behind the pine hand, make 11 cards of second cardboard in first cardboard 10 below, guard plate 1 protects the outside at demonstration appearance 7 this moment, have the protection guard action to demonstration appearance 7, when needing to use demonstration appearance 7, outwards pull guard plate 1 and make

first cardboard

10 and 11 separations of second cardboard, guard plate 1 moves up under the effect of 8 restoring forces of first compression spring, alright use demonstration appearance 7 this moment.

Example 2

second cardboard

Through the structures of the demonstration instrument 7, the protection plate 1, the first compression spring 8, the second compression spring 3 and the like, the demonstration instrument 7 is moved to a proper position under the action of the universal wheel 6, the universal wheel 6 is fixed through the brake mechanism 14, the demonstration instrument 7 is convenient to move, when the demonstration instrument 7 is not used, the hand-pulling protection plate 1 moves downwards, the protection plate 1 is pulled outwards at the same time, after hands are loosened, under the action of the restoring force of the second compression spring 3, the second clamping plate 11 is clamped below the first clamping plate 10, the protection plate 1 is protected outside the demonstration instrument 7 at the moment, the protection effect is achieved on the demonstration instrument 7, and the problems that most of the existing demonstration instruments are not provided with protection devices, when the demonstration instruments are not used, the demonstration instruments are directly exposed outside and collision is easy to occur are solved; when needing to use demonstration appearance 7, outwards pull protection plate 1 and make first cardboard 10 and the separation of second cardboard 11, protection plate 1 is at 8 rebound of first compression spring effect down rebound, alright use demonstration appearance 7 this moment.

As the improvement of the technical scheme, the lifting rod comprises a fixed rod 13, the fixed rod 13 is fixedly arranged on a bottom block 16, a movable rod 12 is inserted into the top of the fixed rod 13, the top end of the movable rod 12 is fixedly connected with a fixed block 2, an elastic screw 15 is arranged on one side of the upper end of the fixed rod 13, the elastic screw 15 is in threaded fit with the fixed rod 13, and the movable rod 12 is abutted and fixed through screwing the elastic screw 15.

Through the movable rod 12 and the dead lever 13 isotructure that set up, according to the needs of demonstration appearance 7 height, adjust the degree of depth that movable rod 12 inserted in dead lever 13, movable rod 12 supports fixedly through the elasticity screw rod 15 of screwing, and then adjusts the height of demonstration appearance 7, and demonstration appearance 7 altitude mixture control is convenient.

The utility model discloses a theory of operation and application method:

when the demonstration instrument 7 is used, the demonstration instrument 7 is moved to a proper position under the action of the universal wheel 6, the universal wheel 6 is fixed through the brake mechanism 14, the demonstration instrument 7 is convenient to move, when the demonstration instrument 7 is not used, the hand-pulling protection plate 1 moves downwards, the protection plate 1 is pulled outwards at the same time, after the hands are loosened, under the action of the restoring force of the second compression spring 3, the second clamping plate 11 is clamped below the first clamping plate 10, the protection plate 1 is protected outside the demonstration instrument 7 at the moment, the demonstration instrument 7 is protected, when the demonstration instrument 7 is needed to be used, the first clamping plate 10 is separated from the second clamping plate 11 by pulling the protection plate 1 outwards, the protection plate 1 moves upwards under the action of the restoring force of the first compression spring 8, and the demonstration instrument 7 can be used at the moment; according to the needs of demonstration appearance 7 height, adjust the degree of depth in movable rod 12 inserts dead lever 13, movable rod 12 supports fixedly through the elasticity screw rod 15 of screwing, and then adjusts the height of demonstration appearance 7, and demonstration appearance 7 altitude mixture control is convenient.

The details of the present invention are well known to those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The demonstration instrument for the middle school physics teaching comprises a bottom block (16) and is characterized in that a lifting rod is fixedly arranged at the top of the bottom block (16), a fixed block (2) is fixedly arranged at the top of the lifting rod, a mounting groove (5) is openly formed in the fixed block (2), a demonstration instrument (7) is mounted at the bottom in the mounting groove (5), a protection plate (1) is openly arranged on the fixed block (2) in a vertical sliding mode, first telescopic rods (9) are respectively and fixedly arranged on two sides of the bottom of the mounting groove (5), a first positioning block (17) is fixedly arranged at the top end of each first telescopic rod (9), a first compression spring (8) is sleeved on each first telescopic rod (9), a second telescopic rod (4) is fixedly arranged on the inner wall of each first positioning block (17), and a second positioning block (18) is fixedly connected with the telescopic end of each second telescopic rod (4), the telescopic protection device is characterized in that a second compression spring (3) is sleeved on the second telescopic rod (4), a second positioning block (18) is fixedly connected with the protection plate (1), a first clamping plate (10) is fixedly arranged at the lower end of the front side of the fixing block (2), a second clamping plate (11) is fixedly arranged at the lower end of the back side of the protection plate (1), and the first clamping plate (10) is in limit fit with the second clamping plate (11).

2. A demonstration apparatus for physics teaching of middle school according to claim 1 wherein: the four corners of the bottom block (16) are respectively and fixedly provided with universal wheels (6), and the universal wheels (6) are provided with brake mechanisms (14).

3. A demonstration apparatus for physics teaching of middle school according to claim 2 wherein: the lifter includes dead lever (13), dead lever (13) are fixed to be set up bottom block (16), dead lever (13) top is inserted and is equipped with movable rod (12), movable rod (12) top fixed connection fixed block (2), dead lever (13) upper end one side is provided with elasticity screw rod (15), elasticity screw rod (15) with dead lever (13) screw-thread fit, movable rod (12) are through screwing elasticity screw rod (15) support fixedly.

4. A demonstration apparatus for physics teaching of middle school according to claim 3 wherein: the longitudinal section of the protection plate (1) is L-shaped.