CN113223793B - Combined sliding resistor for physics teaching - Google Patents
Combined sliding resistor for physics teaching Download PDFInfo
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- CN113223793B CN113223793B CN202110411675.5A CN202110411675A CN113223793B CN 113223793 B CN113223793 B CN 113223793B CN 202110411675 A CN202110411675 A CN 202110411675A CN 113223793 B CN113223793 B CN 113223793B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/30—Adjustable resistors the contact sliding along resistive element
- H01C10/38—Adjustable resistors the contact sliding along resistive element the contact moving along a straight path
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/182—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for components
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/30—Adjustable resistors the contact sliding along resistive element
- H01C10/38—Adjustable resistors the contact sliding along resistive element the contact moving along a straight path
- H01C10/44—Adjustable resistors the contact sliding along resistive element the contact moving along a straight path the contact bridging and sliding along resistive element and parallel conducting bar or collector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C13/00—Resistors not provided for elsewhere
- H01C13/02—Structural combinations of resistors
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- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Adjustable Resistors (AREA)
Abstract
The invention relates to the technical field of physical teaching, in particular to a combined sliding resistor for physical teaching, which comprises two supporting plates and two metal rods, wherein the two supporting plates are respectively provided with a rheostat relatively to the upper part and the lower part of a middle area, each rheostat comprises a frame shaft, a first supporting sleeve, a copper wire, a second supporting sleeve, a connecting sleeve and a connecting head, the middle part of each frame shaft is provided with a groove, the inside of each groove is fixedly connected with a spring, the other end of each spring is fixedly connected with a partition plate, the top end and the bottom end of each supporting plate are respectively fixedly connected with a lug, the two metal rods are respectively provided, the middle parts of the metal rods are respectively matched with a connecting plate in a left-right sliding mode, the top ends of the connecting plates are fixedly connected with insulating blocks, the middle parts of the connecting plates are respectively fixedly connected with a sliding sheet, and the left ends and right ends of the metal rods are respectively connected with a fixed sleeve through threads; the adjustable circuit is convenient for a user to operate, the adjustable maximum stroke is adjustable, the applicable circuit is wide in range, and the adjustable circuit is convenient to disassemble and convenient for explaining various parts.
Description
Technical Field
The invention relates to the technical field of physical teaching, in particular to a combined sliding resistor for physical teaching.
Background
Physics is when teaching, need carry out the experiment, and for resistance in the regulating circuit, sliding resistor need be used at the in-process of doing the experiment, and the sliding resistor quantity that needs to use in different circuits is different.
Through the retrieval, patent publication No. CN207009182U discloses a convenient to use's slip resistor, including the fixed plate, the cushion chamber has been seted up at the top of fixed plate, has seted up two symmetrical joint grooves on the inside wall of cushion chamber, and the post is glued in two symmetrical cushions of fixedly connected with on the interior diapire of cushion chamber, and the buffer spring that the fixedly connected with equidistance was arranged on the interior diapire of cushion chamber, the backup pad with cushion chamber looks adaptation has been placed to the inside of cushion chamber. This convenient to use's sliding resistor for teaching utilizes buffer spring's elasticity, and the backup pad can carry out the up-and-down formula motion to can carry out reasonable slowly-releasing to the extrusion force that this resistor received, the effectual phenomenon of having avoided this sliding resistor to take place to slide and empty, stably place effectually, can satisfy the teaching demand basically, guaranteed this sliding resistor's stationarity, possess certain non-skid property, avoided the emergence of hand slip phenomenon, it is more convenient to use.
When the sliding resistor is used, a plurality of sliding resistors are needed when a plurality of resistors are needed in a circuit, operation is not convenient for a user, the maximum adjusting stroke of the sliding resistor cannot be adjusted, the applicable circuit is wide in range, the sliding resistor is not convenient to disassemble, and further the explanation of each part is not convenient to carry out.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the combined sliding resistor for physics teaching is convenient for a user to operate, the maximum adjusting stroke of the combined sliding resistor is adjustable, and the combined sliding resistor is suitable for a wider circuit range, is convenient to disassemble and is convenient for explaining various parts.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a combined sliding resistor for physics teaching comprises two supporting plates and metal rods, wherein the two supporting plates are arranged, the upper parts and the lower parts of the two supporting plates, which are opposite to the middle area, are respectively provided with a variable resistance device, the variable resistance device comprises a frame shaft, the left end and the right end of the frame shaft are respectively connected with the opposite ends of the corresponding supporting plates, the left part of each frame shaft is sleeved with a first supporting sleeve, the circumferential outer wall of the first supporting sleeve is spirally wound with copper wires, the right part of each frame shaft is sleeved with a second supporting sleeve, the circumferential outer wall of the second supporting sleeve is spirally wound with copper wires, the left end and the right end of the first supporting sleeve and the left end and the right end of the second supporting sleeve are respectively sleeved with a connecting sleeve, the bottom of each connecting sleeve is provided with a connector, the two connectors positioned in the middle of the frame shaft are connected through a lead, the middle part of each frame shaft is provided with a groove, the spring is fixedly connected to the inside of the groove, a partition plate is fixedly connected to the other end of each spring, a protruding block is fixedly connected to the top end and the bottom end of each supporting plate, two metal rods are arranged, the left end and the right end of each metal rod penetrate through the middle of each corresponding protruding block respectively, a connecting plate is arranged in the middle of each metal rod in a sliding fit mode, an insulating block is fixedly connected to the top end of each connecting plate, a sliding piece is fixedly connected to the middle of each connecting plate, and a fixing sleeve is connected to the left end and the right end of each metal rod through threads.
Preferably, the lifting device further comprises a bottom plate, a rotating shaft is fixedly connected to the middle of each supporting plate, an extension shaft is fixedly connected to the free end of each rotating shaft, a first hand wheel is fixedly connected to the free end of each extension shaft, a height increasing plate is rotatably connected to the middle of each extension shaft, and the bottom end of each height increasing plate is fixedly connected to the top end of the bottom plate.
Preferably, the top end of the supporting plate is connected with a jackscrew through threads, and the top end of each jackscrew is fixedly connected with a second hand wheel.
Preferably, the left and right ends of the frame shaft are coupled to opposite ends of each corresponding support plate by two set screws.
Preferably, one end of each partition board, which is close to the central axis of each corresponding frame shaft, is fixedly connected with a limiting sleeve, and the circumferential outer wall of each limiting sleeve is contacted with the inner wall of each corresponding positioning hole.
Preferably, the four corners of the bottom of each bottom plate are respectively connected with a screw through threads, and the bottom of each screw is fixedly connected with a sucker.
Preferably, the bottom end of each screw rod is provided with a hexagonal prism hole corresponding to the inner hexagonal wrench.
Preferably, the middle part of the spring is sleeved with a positioning shaft, the inner wall of each groove is provided with a positioning hole, the circumferential outer wall of each positioning shaft is in up-and-down sliding fit with each corresponding positioning hole, and the opposite ends of each positioning shaft corresponding to the partition plates are fixedly connected.
Preferably, the first support sleeve and the second support sleeve are in tight fit with the circumferential outer wall of the frame shaft.
(III) advantageous effects
Compared with the prior art, the invention provides a combined sliding resistor for physics teaching, which has the following beneficial effects:
the combined sliding resistor for physics teaching is characterized in that when the combined sliding resistor is used, a user connects wires with different connectors to further adjust the resistance value adjusting range of the sliding resistor, and moves each sliding sheet leftwards and rightwards to adjust the resistance value in a communicated circuit, a first supporting sleeve and a second supporting sleeve are separated by a partition plate, the condition of wrong connection of copper wires is reduced, when the combined sliding resistor is explained, a frame shaft is disassembled, each first supporting sleeve and each second supporting sleeve are disassembled, the partition plate is extruded when the first supporting shaft is disassembled, a spring is retracted, the first supporting sleeve and the second supporting sleeve are convenient to disassemble, after the fixed sleeve is disassembled, a metal rod is disassembled, each part is explained after being disassembled, the combined sliding resistor is convenient to operate by the user, the maximum adjusting stroke of the combined sliding resistor is adjustable, the applicable circuit range is wide, and the combined sliding resistor is convenient to disassemble, the explanation effect of each part is convenient to carry out.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is a left side view structural schematic diagram of the frame shaft, the copper wire and the second support sleeve of the present invention;
FIG. 4 is a schematic bottom view of the base plate, suction cup and screw of the present invention;
fig. 5 is a left side view structural schematic diagram of the lengthened shaft, the jackscrew and the second hand wheel in the invention.
In the figure: 1. a support plate; 2. a metal rod; 3. a frame shaft; 4. a first support sleeve; 5. a copper wire; 6. a second support sleeve; 7. connecting sleeves; 8. a connector; 9. a wire; 10. a spring; 11. a partition plate; 12. a bump; 13. a connecting plate; 14. an insulating block; 15. sliding blades; 16. fixing a sleeve; 17. a base plate; 18. a rotating shaft; 19. lengthening a shaft; 20. a first hand wheel; 21. heightening plates; 22. carrying out top thread; 23. a second hand wheel; 24. a set screw; 25. a limiting sleeve; 26. a screw; 27. a suction cup; 28. and (5) positioning the shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
referring to fig. 1-5, a combined sliding resistor for physics teaching comprises two support plates 1, a bottom plate 17 and metal rods 2, wherein the two support plates 1 are provided, the upper parts and the lower parts of the relative middle areas of the two support plates 1 are provided with resistance varying devices, each resistance varying device comprises a frame shaft 3, and the left end and the right end of each frame shaft 3 are respectively connected with the opposite ends of the corresponding support plates 1 through two positioning screws 24; the posture of the frame shaft 3 is limited by the two positioning screws 24, the rotation of the frame shaft 3 in the use process is reduced, the use stability is further improved, the left end and the right end of the frame shaft 3 are respectively connected with the opposite ends of the corresponding support plates 1, the left part of each frame shaft 3 is sleeved with a first support sleeve 4, the circumferential outer wall of the first support sleeve 4 is spirally wound with copper wires 5, the right part of each frame shaft 3 is sleeved with a second support sleeve 6, and the first support sleeve 4 and the second support sleeve 6 are in tension fit with the circumferential outer wall of the frame shaft 3; through the form of tight complex that rises, reduce the in-process that uses first support sleeve 4 and second support sleeve 6 the condition of horizontal slip on frame axle 3, the circumference outer wall spiral of second support sleeve 6 is coiled there is copper wire 5, first support sleeve 4 and left end and right-hand member all overlap and are equipped with adapter sleeve 7 with the left end and the right-hand member of second support sleeve 6, the bottom of adapter sleeve 7 all is provided with connector 8, two connectors 8 that are located frame axle 3 middle part are connected through wire 9.
Furthermore, a groove is formed in the middle of each frame shaft 3, a spring 10 is fixedly connected inside the groove, a partition plate 11 is fixedly connected to the other end of each spring 10, a positioning shaft 28 is sleeved in the middle of each spring 10, positioning holes are formed in the inner wall of each groove, the circumferential outer wall of each positioning shaft 28 is in up-and-down sliding fit with each corresponding positioning hole, and the opposite ends of each positioning shaft 28, corresponding to the partition plates 11, are fixedly connected; the moving posture of the spring 10 is limited by the positioning shafts 28, the deflection of the spring 10 is reduced, the use reliability is further improved, one end of each partition plate 11, which is close to the central axis of each corresponding frame shaft 3, is fixedly connected with a limiting sleeve 25, and the circumferential outer wall of each limiting sleeve 25 is contacted with the inner wall of each corresponding positioning hole; the situation that the clapboard 11 deflects in the moving process is further reduced through the matching between the limiting sleeve 25 and the positioning hole, the top end and the bottom end of each support plate 1 are fixedly connected with bumps 12, two metal rods 2 are arranged, the left end and the right end of each metal rod 2 respectively penetrate through the middle part of each corresponding bump 12, the middle part of each metal rod 2 is matched with a connecting plate 13 in a left-right sliding mode, the top end of the connecting plate 13 is fixedly connected with an insulating block 14, the middle part of the connecting plate 13 is fixedly connected with a sliding sheet 15, the left end and the right end of each metal rod 2 are respectively connected with a fixed sleeve 16 through threads, the middle part of each support plate 1 is fixedly connected with a rotating shaft 18, the free end of each rotating shaft 18 is fixedly connected with a lengthened shaft 19, the free end of each lengthened shaft 19 is fixedly connected with a first hand wheel 20, the middle part of each lengthened shaft 19 is rotatably connected with a heightening plate 21, and the bottom end of each heightening plate 21 is fixedly connected with the top end of a bottom plate 17; through increasing board 21 and bottom plate 17 support increase axle 19, backup pad 1 and frame axle 3 to it is rotatory to drive frame axle 3 through the rotatory first hand wheel 20 of user, and then adjusts the position of connector 8, reaches the effect of further convenient to use person's wiring.
Further, the top end of the supporting plate 1 is connected with jackscrews 22 through threads, and the top end of each jackscrew 22 is fixedly connected with a second wheel 23; the second hand wheel 23 is rotated by a user, so that the jackscrew 22 is driven to jack the lengthened shaft 19, the positions of the lengthened shaft 19 and the frame shaft 3 are fixed through the friction force between the lengthened shaft 19 and the jackscrew 22, the situation that the frame shaft 3 and the resistance-variable device shake during use is reduced, four corner positions of the bottom end of each bottom plate 17 are connected with screw rods 26 through threads, and the bottom end of each screw rod 26 is fixedly connected with a sucker 27; when the table is used, the sucking discs 27 are matched with the table top to further fix the position of the bottom plate 17, the heights of the four corners of the bottom plate 17 are adjusted through the screws 26, so that the table is suitable for different table tops, the use stability is improved, and the bottom end of each screw 26 is provided with a hexagonal prism hole corresponding to an inner hexagonal wrench; when the length of the screw 26 extending out of the bottom plate 17 is adjusted, a user can rotate the screw 26 by using a hexagon socket wrench, so that the user can conveniently adjust the screw 26, and the occupied space is reduced by the form of the hexagonal prism hole; when the wire connecting device is used, a user connects wires with different connectors 8 to adjust the resistance value adjusting range of the sliding resistor, moves each sliding sheet 15 leftwards and rightwards to adjust the resistance value in a communicated circuit, separates the first supporting sleeve 4 and the second supporting sleeve 6 through the partition plate 11 to reduce the condition of wrong connection of copper wires, detaches the frame shaft 3 and detaches each first supporting sleeve 4 and each second supporting sleeve 6 when explaining, presses the partition plate 11 when detaching the first supporting shaft to withdraw the spring 10 so as to facilitate detachment of the first supporting sleeve 4 and the second supporting sleeve 6, detaches the metal rod 2 after detaching the fixing sleeve 16 to detach each part and then explains the detached parts, thereby facilitating the operation of the user, adjusting the maximum stroke, and ensuring that the applicable circuit range is wider and the detachment is convenient, the explanation effect of each part is convenient to carry out.
In summary, the working principle and the working process of the combined sliding resistor for physics teaching are as follows, when in use, firstly, a user connects the wires with different connectors 8 when in use, and adjusts the resistance value in the communication circuit by moving each sliding sheet 15 left and right, the resistance value adjusting range of the sliding resistor is adjusted according to the actual use condition, the first supporting sleeve 4 and the second supporting sleeve 6 are separated by the clapboard 11, the condition of wrong connection of copper wires is reduced, and by removing the frame shaft 3 and each of the first support sleeve 4 and the second support sleeve 6 at the time of explanation, by pressing the partition plate 11 at the time of removal of the first support shaft, thereby retracting the spring 10, thereby facilitating the disassembly of the first and second support sleeves 4, 6, the metal rod 2 is then removed after the fixing cover 16 is removed, and the components are removed for explanation.
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 (8)
1. The utility model provides a combination formula sliding resistor for physical teaching which characterized in that: the device comprises supporting plates (1) and metal rods (2), wherein the number of the supporting plates (1) is two, the upper parts and the lower parts of the relative middle areas of the two supporting plates (1) are respectively provided with a variable resistance device, the variable resistance device comprises frame shafts (3), the left ends and the right ends of the frame shafts (3) are respectively connected with the opposite ends of the corresponding supporting plates (1), the left part of each frame shaft (3) is sleeved with a first supporting sleeve (4), the circumferential outer wall of the first supporting sleeve (4) is spirally wound with copper wires (5), the right part of each frame shaft (3) is sleeved with a second supporting sleeve (6), the circumferential outer wall of the second supporting sleeve (6) is spirally wound with copper wires (5), the left ends and the right ends of the first supporting sleeve (4) and the second supporting sleeve (6) are sleeved with connecting sleeves (7), the bottoms of the connecting sleeves (7) are respectively provided with connecting sleeves (8), two connectors (8) positioned in the middle of each frame shaft (3) are connected through a wire (9), a groove is formed in the middle of each frame shaft (3), springs (10) are fixedly connected inside the grooves, a partition plate (11) is fixedly connected to the other end of each spring (10), a lug (12) is fixedly connected to the top end and the bottom end of each support plate (1), two metal rods (2) are arranged, the left end and the right end of each metal rod (2) respectively penetrate through the middle of each corresponding lug (12), a connecting plate (13) is in sliding fit with the middle of each metal rod (2) from left to right, an insulating block (14) is fixedly connected to the top end of each connecting plate (13), a sliding sheet (15) is fixedly connected to the middle of each connecting plate (13), and a fixing sleeve (16) is connected to the left end and the right end of each metal rod (2) through threads, the middle part of the spring (10) is sleeved with a positioning shaft (28), the inner wall of each groove is provided with a positioning hole, the circumferential outer wall of each positioning shaft (28) is in up-and-down sliding fit with each corresponding positioning hole, and the opposite ends of each positioning shaft (28) corresponding to the partition plates (11) are fixedly connected.
2. A combined slide resistor for teaching physics according to claim 1 wherein: the novel lifting device is characterized by further comprising a bottom plate (17), wherein rotating shafts (18) are fixedly connected to the middle of each supporting plate (1), extension shafts (19) are fixedly connected to the free ends of the rotating shafts (18), first hand wheels (20) are fixedly connected to the free ends of the extension shafts (19), heightening plates (21) are rotatably connected to the middle of the extension shafts (19), and the bottom ends of the heightening plates (21) are fixedly connected with the top end of the bottom plate (17).
3. A combined slide resistor for teaching physics according to claim 2 wherein: the top end of the supporting plate (1) is connected with jackscrews (22) through threads, and the top end of each jackscrew (22) is fixedly connected with a second hand wheel (23).
4. A combined slide resistor for physical teaching according to claim 3, wherein: the left end and the right end of the frame shaft (3) are respectively connected with the opposite ends of each corresponding support plate (1) through two positioning screws (24).
5. The combined sliding resistor for physical teaching of claim 4, wherein: one end of each partition plate (11) close to the central axis of each corresponding frame shaft (3) is fixedly connected with a limiting sleeve (25), and the circumferential outer wall of each limiting sleeve (25) is contacted with the inner wall of each corresponding positioning hole.
6. The combined sliding resistor for physical teaching of claim 5, wherein: the bottom four corners of each bottom plate (17) are connected with screws (26) through threads, and the bottom of each screw (26) is fixedly connected with a sucker (27).
7. The combined sliding resistor for physical teaching of claim 6, wherein: the bottom end of each screw rod (26) is provided with a hexagonal prism hole corresponding to the inner hexagonal wrench.
8. The combined sliding resistor for physical teaching of claim 7, wherein: the first supporting sleeve (4) and the second supporting sleeve (6) are in tight fit with the circumferential outer wall of the frame shaft (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110411675.5A CN113223793B (en) | 2021-04-16 | 2021-04-16 | Combined sliding resistor for physics teaching |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110411675.5A CN113223793B (en) | 2021-04-16 | 2021-04-16 | Combined sliding resistor for physics teaching |
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| Publication Number | Publication Date |
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| CN113223793A CN113223793A (en) | 2021-08-06 |
| CN113223793B true CN113223793B (en) | 2022-05-17 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7636488U1 (en) * | 1976-11-18 | 1977-03-24 | Schleicher Gmbh & Co Relais-Werke Kg, 1000 Berlin | Electronic multi-range timing relay with analog time setting |
| CN202957093U (en) * | 2012-11-23 | 2013-05-29 | 牡丹江师范学院 | Slide rheostat |
| CN203433719U (en) * | 2013-08-02 | 2014-02-12 | 陈显盈 | Slide rheostat having coarse adjustment/fine adjustment selection function |
| CN206225099U (en) * | 2016-10-31 | 2017-06-06 | 武明翰 | A kind of range finding slide rheostat with double spiral tube |
| CN208706345U (en) * | 2018-05-22 | 2019-04-05 | 王泽露 | A kind of combined type physics Experiments of Electricity swept resistance |
| CN209895861U (en) * | 2019-07-17 | 2020-01-03 | 江南大学 | Combined sliding rheostat |
| CN211828323U (en) * | 2020-03-26 | 2020-10-30 | 王巧红 | High-safety-factor electric slide-wire rheostat |
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2021
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