Combined sliding resistor for physics teaching
A sliding resistor and combined technology, applied in the field of physics teaching, can solve the problems of non-adjustable maximum stroke, inconvenient operation, inconvenient disassembly, etc., and achieve the effects of reducing misconnection of copper wires, easy disassembly, and easy explanation
Active Publication Date: 2021-08-06
蒋泺伊
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Problems solved by technology
[0004] In the process of use, multiple sliding resistors need to be used when multiple resistors are used in the circuit, which is not convenient for users to operate, and the maximum stroke of its adjustment cannot be adjusted. It is suitable for a wide range of circuits and is not easy to disassemble. , and it is not convenient to explain the parts
Method used
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[0028] see Figure 1-5 , a combined sliding resistor for physics teaching, including a support plate 1, a bottom plate 17 and a metal rod 2, two support plates 1 are provided, and rheostats are provided on the upper and lower parts of the relative middle areas of the two support plates 1 device, the variable resistance device includes a frame shaft 3, 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; the posture of the frame shaft 3 is limited by the two positioning screws 24, reducing When the frame shaft 3 rotates during use, the stability of use is further improved. The left end and the right end of the frame shaft 3 are respectively connected to the opposite ends of each corresponding support plate 1, and the left part of each frame shaft 3 is equipped with a first support Cover 4, the outer wall of the first support sleeve 4 is spirally wound with c...
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The invention relates to the technical field of physics teaching, in particular to a combined sliding resistor for physics teaching. The combined sliding resistor comprises two support plates and a metal rod, wherein the upper part and the lower part of the opposite middle region of the two support plates are both provided with variable resistance devices, each variable resistance device comprises a frame shaft, a first support sleeve, a copper wire, a second support sleeve, a connecting sleeve and a connector, a groove is formed in the middle of each frame shaft, a spring is fixedly connected into each groove, a partition plate is fixedly connected to the other end of each spring, protruding blocks are fixedly connected to the top end and the bottom end of each supporting plate, the two metal rods are arranged, a connecting plate is in left-right sliding fit with the middle of each metal rod, an insulating block is fixedly connected to the top end of each connecting plate, the middle of each connecting plate is fixedly connected with a sliding piece, and the left end and the right end of each metal rod are connected with fixing sleeves through threads. The combined sliding resistor is convenient for a user to operate, adjustable in maximum stroke, wide in applicable circuit range, convenient to disassemble, and convenient for explanation of each part.
Description
technical field [0001] The invention relates to the technical field of physics teaching, in particular to a combined sliding resistor for physics teaching. Background technique [0002] When teaching physics, experiments are required. In order to adjust the resistance in the circuit during the experiment, sliding resistors are needed. The number of sliding resistors that need to be used in different circuits is different. [0003] After searching, the patent publication number is CN207009182U, which discloses a sliding resistor that is easy to use, including a fixed plate. The inner bottom wall of the cavity is fixedly connected with two symmetrical buffer rubber columns, and the inner bottom wall of the buffer cavity is fixedly connected with buffer springs arranged equidistantly, and the inside of the buffer cavity is placed with a support plate that matches the buffer cavity . The easy-to-use sliding resistor for teaching uses the elastic force of the buffer spring, and...
Claims
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IPC IPC(8): H01C10/38H01C10/44H01C13/02H01C1/01H01C1/14G09B23/18
CPCH01C10/38H01C1/14H01C1/01H01C10/44H01C13/02G09B23/182
Inventor 蒋泺伊
Owner 蒋泺伊