Electronic device with adjustable resistance

Abstract

The utility model provides an electronic device capable of adjusting resistance, which belongs to the technical field of rheostats and comprises two mounting seats and a plurality of wiring components arranged on the mounting seats, and mounting sleeves are mounted on the outer walls of one sides of the mounting seats. According to the utility model, the lamp bead arranged on the wiring assembly is conducted when the position is wired, the path of current is judged by judging the lightening position of the lamp bead, meanwhile, when the sliding block is moved to adjust the resistance value of the resistor, the change of the resistance value can be intuitively reflected through the brightness of the lamp bead, and meanwhile, the direction of the current can be judged; according to the utility model, students can intuitively judge the current direction when the slide rheostat demonstrates and the current change when the slide rheostat changes, the teaching efficiency is improved, the arranged sliding sleeve is matched with the positioning sleeve to protect and fix the wire clamp in the process of conducting the lamp bead by wiring, the wire clamp connection position is prevented from loosening in the demonstration process, and the teaching quality is improved. Therefore, the stability of the demonstration process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of variable resistors, in particular to an electronic device with adjustable resistance. Background Art

[0002] The sliding rheostat is a circuit element that controls the circuit by changing its own resistance. In circuit analysis, the sliding rheostat can be used as both a fixed resistor and a variable resistor. The sliding rheostat is generally composed of five parts: a terminal, a slider, a resistance wire, a metal rod, and a porcelain tube. The resistance wire of the sliding rheostat is wound around the insulating porcelain tube, and the outside of the resistance wire is coated with insulating paint. In the middle school classroom teaching process, the sliding rheostat is a teaching focus and needs to be delayed in class.

[0003] In existing classroom demonstrations of sliding rheostats, the length of the resistor's circuit section and the resistance value must be explained verbally. This prevents students from intuitively understanding the current path and changes in resistance, resulting in poor demonstration effectiveness and hindering teaching efficiency. Inventing an electronic device with adjustable resistance to address these issues has become a pressing issue for those skilled in the art. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an electronic device with adjustable resistance, which aims to solve the problem of poor classroom demonstration effect of sliding rheostat.

[0005] The utility model is achieved in this way:

[0006] The utility model provides an electronic device with adjustable resistance, comprising a mounting base and a plurality of wiring assemblies arranged on the mounting base, wherein a mounting sleeve is mounted on an outer wall of one side of the mounting base, a ceramic rod is mounted between two mounting sleeves, conductive rings are mounted on the side walls of the ceramic rods close to both ends of the mounting sleeves, a coil is mounted on the outer wall of the ceramic rod, conductive rods are mounted on the inner walls of the two mounting bases, a slider is mounted on the outer wall of the conductive rod, and a conductive column is mounted on the lower end of the slider;

[0007] Two of the wiring assemblies are respectively installed on the conductive rings at both ends, and the other two wiring assemblies are respectively arranged on the outer wall of the mounting base close to the conductive rod. The wiring assemblies include a mounting plate, a terminal, a conductive sheet, a lamp bead, a limit rod, a spring, a positioning sleeve, a sliding sleeve, an adjustment sleeve, a limit ring and a wire clamp.

[0008] Preferably, both ends of the coil are electrically connected to the conductive ring, an insulating sleeve is provided on the outside of the coil, and slots are provided on both sides of the outer wall of the coil, and the slots expose the wires inside the coil.

[0009] Preferably, the inner wall of the sliding block and the outer wall of the conductive rod are in sliding connection, the sliding block and the conductive rod are in electrical contact, the sliding block and the conductive column are in electrical contact, and one end of the conductive column and the coil wire in the slot are in electrical contact.

[0010] Preferably, the mounting seat and the terminal post are fixedly connected, the mounting seat is sleeved with a gasket close to the outer wall of the terminal post, the conductive sheet is sleeved on the outside of the terminal post, the conductive sheet and the lamp bead are in electrical connection, one side of the conductive sheet is fixedly connected with one end of the limiting rod, the outer wall of the limiting rod is in sliding connection with the inner wall of the mounting seat, and the limiting rod is provided with a spring fixedly connected with the mounting seat on one side.

[0011] Preferably, the terminal post is inserted with a wire clamp close to the upper outer wall of the conductive sheet, the outer wall of the terminal post is provided with a plurality of limiting grooves, the inner wall of the sliding sleeve is provided with a limiting block in sliding connection with the limiting grooves, one end of the adjusting sleeve is provided with a limiting ring in rotational connection with the inner wall of the adjusting sleeve, and the inner wall of the adjusting sleeve is in threaded connection with the outer wall of the terminal post.

[0012] Preferably, the mounting seat, the spring, the positioning sleeve, the sliding sleeve and the adjusting sleeve are all made of insulating material, and one end of the wire assembly on the outer side of the two mounting seats is in electrical connection with the conductive rod.

[0013] By adopting the above technical scheme, when demonstrating, two wires are installed on different wire assemblies through the wire clamp, at this time, the lamp beads at the position are turned on, the lamp beads on the two wire assemblies are all lighted in the power-on state, at this time, two lamp beads are used as the starting point and the ending point, and the current flowing position can be directly observed, and the brightness of one lamp bead is observed by moving the sliding block to change the resistance to judge the current flowing direction, and the demonstration can be directly and intuitively performed.

[0014] Preferably, the lower end side wall of the sliding sleeve is fixedly connected with the inner wall of the positioning sleeve, one end of the positioning sleeve is abutted with one side of the outer wall of the conductive sheet, and the positioning sleeve is provided with a positioning slot for the wire of one end of the wire clamp to pass out.

[0015] By adopting the above technical scheme, while the wire clamp is inserted and fixed, the adjusting sleeve is rotated to make the sliding sleeve continuously slide, the wire clamp is wrapped in the positioning sleeve, only the wire of one end of the wire clamp is exposed, and then alignment is clamped and fixed, so that loosening of the wire clamp connection is avoided, and the stability of the demonstration process is improved.

[0016] The beneficial effects of the utility model are as follows:

[0017] The lamp bead arranged on the wiring assembly is turned on when the wiring is connected at the position, the position of the lamp bead lighting is judged to judge the current path, when the resistance value of the resistor is adjusted by moving the slider, the brightness of the lamp bead can directly reflect the change of the resistance value, and the direction of the current can be judged, so that the students can directly judge the direction of the current during the demonstration of the sliding rheostat and the change of the current when the sliding rheostat changes, the efficiency of teaching is improved, the sliding sleeve cooperates with the positioning sleeve to protect and fix the wire tongs during the process of connecting the lamp bead, so that the wire tongs connection is prevented from loosening during the demonstration process, the current is prevented from being unstable, and the stability of the demonstration process is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiment of the present application, the following will briefly introduce the drawings needed to be used in the embodiment, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0019] Figure 1 It is a schematic diagram of an electronic device structure with adjustable resistance provided by the embodiment of the present application.

[0020] Figure 2 It is a half sectional view of an electronic device with adjustable resistance provided by the embodiment of the present application.

[0021] Figure 3 It is a schematic diagram of a wiring assembly in an electronic device with adjustable resistance provided by the embodiment of the present application.

[0022] Figure 4 It is a half sectional view of a wiring assembly in an electronic device with adjustable resistance provided by the embodiment of the present application.

[0023] Figure 5 It is a structure of an electronic device with adjustable resistance provided by the embodiment of the present application. Figure 4 A region structure enlargement of the electronic device with adjustable resistance.

[0024] In the figure: 1, mounting seat; 2, mounting sleeve; 3, ceramic rod; 4, conductive ring; 5, coil; 6, missing slot; 7, conductive rod; 8, slider; 9, conductive column; 10, wiring assembly; 11, mounting plate; 12, gasket; 13, wiring column; 14, limiting groove; 15, conductive sheet; 16, lamp bead; 17, limiting rod; 18, spring; 19, positioning sleeve; 20, positioning groove; 21, sliding sleeve; 22, limiting block; 23, adjusting sleeve; 24, limiting ring; 25, wire tongs. DETAILED DESCRIPTION

[0025] In order to make the purposes, technical schemes and advantages of the embodiments of the present application clearer, the technical schemes of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Embodiments, with reference to Figures 1-5 The adjustable resistance electronic device comprises two mounting seats 1, a plurality of wiring assemblies 10 arranged on the mounting seats 1, a mounting sleeve 2 arranged on one side outer wall of the mounting seat 1, a ceramic rod 3 arranged between the two mounting sleeves 2, a conductive ring 4 arranged on the two end side walls of the ceramic rod 3 close to the mounting sleeves 2, a coil 5 arranged on the outer wall of the ceramic rod 3, a conductive rod 7 arranged on the inner wall of the two mounting seats 1, a sliding block 8 arranged on the outer wall of the conductive rod 7, a conductive column 9 arranged on the lower end of the sliding block 8.

[0027] Two wiring assemblies 10 are arranged on the two conductive rings 4 respectively, and the other two wiring assemblies 10 are arranged on the outer wall of the mounting seat 1 close to the conductive rod 7. The wiring assembly 10 comprises a mounting plate 11, a wiring column 13, a conductive sheet 15, a lamp bead 16, a limiting rod 17, a spring 18, a positioning sleeve 19, a sliding sleeve 21, an adjusting sleeve 23, a limiting ring 24 and a wire clamp 25.

[0028] Further, two ends of the coil 5 are electrically connected with the conductive ring 4, an insulating sleeve is arranged outside the coil 5, and a slot 6 is arranged on the outer wall of the coil 5, so that the wire inside the coil 5 is exposed, the inner wall of the sliding block 8 is slidably connected with the outer wall of the conductive rod 7, the inner wall of the sliding block 8 is electrically connected with the conductive rod 7, the sliding block 8 is electrically connected with the conductive column 9, one end of the conductive column 9 is electrically connected with the wire of the coil 5 in the slot 6, the mounting seat 1 is fixedly connected with the terminal post 13, the outer wall of the mounting seat 1 close to the terminal post 13 is sleeved with the gasket 12, the gasket 12 is electrically connected with the terminal post 13, the conductive sheet 15 is sleeved outside the terminal post 13, the conductive sheet 15 is electrically connected with the lamp bead 16, one side of the conductive sheet 15 is fixedly connected with one end of the limiting rod 17, the outer wall of the limiting rod 17 is slidably connected with the inner wall of the mounting seat 1, one side of the limiting rod 17 is provided with the spring 18 which is fixedly connected with the mounting seat 1, the upper outer wall of the terminal post 13 close to the conductive sheet 15 is inserted with the wire clamp 25, a plurality of limiting grooves 14 are arranged on the outer wall of the terminal post 13, the inner wall of the sliding sleeve 21 is provided with the limiting block 22 which is slidably connected with the limiting groove 14, one end of the adjusting sleeve 23 is provided with the limiting ring 24 which is rotatably connected with the inner wall of the adjusting sleeve 23, the inner wall of the adjusting sleeve 23 is threadedly connected with the outer wall of the terminal post 13, the mounting seat 1, the spring 18, the positioning sleeve 19, the sliding sleeve 21 and the adjusting sleeve 23 are all made of insulating material, and one end of the wiring assembly 10 on the outer side of the two mounting seats 1 is electrically connected with the conductive rod 7.

[0029] It should be noted that, during the demonstration in the classroom, the two wires are respectively arranged on different wiring assemblies 10 through the wire clamp 25, then the adjusting sleeve 23 is rotated to press and move the sliding sleeve 21 at one end, meanwhile, one side of the wire clamp 25 presses the conductive sheet 15 and moves to one side of the gasket 12, until one side of the conductive sheet 15 contacts with the gasket 12, at this time, the conductive sheet 15 and the mounting plate 11 are conducted, meanwhile, the lamp bead 16 on the wiring assembly 10 is conducted, under the state of being conducted, the lamp beads 16 on the two wiring assemblies 10 are both lighted, at this time, taking the two lamp beads 16 as the starting point and the end point, and taking one of the wiring assemblies 10 as the starting point, the sliding block 8 reaches the position of the other wiring assembly 10 after passing through the sliding block 8, the path is the path of the current, meanwhile, when the sliding block 8 is moved, the light intensity of the lamp bead 16 as the end of the current changes, so that the position of the wiring assembly 10 is the end of the current, so that the students can directly judge the direction of the current during the demonstration of the sliding rheostat and the change of the current when the sliding rheostat is changed, and the efficiency of teaching is improved.

[0030] Further, the lower end side wall of the sliding sleeve 21 is fixedly connected with the inner wall of the positioning sleeve 19, one end of the positioning sleeve 19 abuts against one side of the conductive sheet 15, and one side of the positioning sleeve 19 is provided with the positioning groove 20 for the wire of one end of the wire clamp 25 to pass out.

[0031] Need to explain is: in the line clamp 25 is inserted fixedly, rotate the adjusting sleeve 23 make slipper 21 constantly slip, make the one side of slipper 21 and resist line clamp 25 fixedly, the positioning sleeve 19 of one side of slipper 21 moves until its one end and the conducting strip 15 resist, at this time the positioning sleeve 19 will line clamp 25 be surrounded fixedly, expose the wire of outside only through positioning groove 20, by this further realize the fixed line clamp 25, avoid in the demonstration process line clamp 25 connection place loose, lead to the current is not stable, thereby improve the stability of demonstration process.

[0032] The working principle of the adjustable resistance electronic device is as follows:

[0033] In the classroom demonstration, the line clamp 25 of the two wires is respectively inserted into the terminal post 13 of the corresponding terminal assembly 10, the adjusting sleeve 23 is rotated to make the slipper 21 constantly slip, the one side of the slipper 21 is fixed to the line clamp 25, and the positioning sleeve 19 on one side of the slipper 21 moves until the one end thereof is in contact with the conducting strip 15, at this time the positioning sleeve 19 surrounds and fixes the line clamp 25, and only the wire on the outside is exposed through the positioning groove 20, so as to fix the line clamp 25, and the one side of the conducting strip 15 is in contact with the gasket 12, at this time the conducting strip 15 and the mounting plate 11 are in conduction, and the lamp bead 16 on the terminal assembly 10 is in conduction, in the energized state, the lamp beads 16 on the two terminal assemblies 10 are both lighted, at this time, the two lamp beads 16 are taken as the starting point and the ending point, and one of the terminal assemblies 10 is taken as the starting point, and after the sliding block 8, the position of the other terminal assembly 10 is reached, the path is the path of the current, and when the sliding block 8 is moved, the light intensity of the lamp bead 16 as the end of the current changes, so that the position of the terminal assembly 10 is the end of the current, so that the students can directly judge the direction of the current in the demonstration of the sliding rheostat and the change of the current when the sliding rheostat is changed, and the teaching efficiency is improved.

[0034] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and for those skilled in the art, the present application can be changed and varied. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electronic device with adjustable resistance, comprising two mounting bases (1) and a plurality of wiring assemblies (10) arranged on the mounting bases (1), characterized in that: A mounting sleeve (2) is mounted on the outer wall of one side of the mounting seat (1), a ceramic rod (3) is mounted between the two mounting sleeves (2), conductive rings (4) are mounted on the side walls of the ceramic rod (3) close to both ends of the mounting sleeve (2), a coil (5) is sleeved on the outer wall of the ceramic rod (3), a conductive rod (7) is mounted on the inner walls of the two mounting seats (1), a slider (8) is mounted on the outer wall of the conductive rod (7), and a conductive column (9) is mounted on the lower end of the slider (8); Two of the wiring assemblies (10) are respectively mounted on the conductive rings (4) at both ends, and the other two wiring assemblies (10) are respectively arranged on the outer wall of the mounting base (1) close to the conductive rod (7). The wiring assembly (10) comprises a mounting plate (11), a terminal (13), a conductive sheet (15), a lamp bead (16), a limiting rod (17), a spring (18), a positioning sleeve (19), a sliding sleeve (21), an adjusting sleeve (23), a limiting ring (24) and a wire clamp (25).

2. The electronic device with adjustable resistance according to claim 1, characterized in that: The two ends of the coil (5) are electrically connected to the conductive ring (4), an insulating sleeve is provided on the outside of the coil (5), and slots (6) are provided on the outer walls of both sides of the coil (5), and the slots (6) expose the wire inside the coil (5).

3. The electronic device with adjustable resistance according to claim 2, characterized in that: The inner wall of the slider (8) and the outer wall of the conductive rod (7) are slidably connected, the inner wall of the slider (8) and the conductive rod (7) are in electrical contact, the slider (8) and the conductive column (9) are in electrical contact, and one end of the conductive column (9) is in electrical contact with the wire of the coil (5) in the slot (6).

4. The electronic device with adjustable resistance according to claim 3, characterized in that: The mounting seat (1) and the terminal (13) are fixedly connected; a washer (12) is sleeved on the outer wall of the mounting seat (1) near the terminal (13); the washer (12) and the terminal (13) are electrically connected; the conductive sheet (15) is sleeved on the outside of the terminal (13); the conductive sheet (15) and the lamp bead (16) are electrically connected; one side of the conductive sheet (15) is fixedly connected to one end of a limiting rod (17); the outer wall of the limiting rod (17) is slidably connected to the inner wall of the mounting seat (1); and one side of the limiting rod (17) is provided with a spring (18) fixedly connected to the mounting seat (1).

5. The electronic device with adjustable resistance according to claim 4, characterized in that: A wire clamp (25) is inserted into the upper outer wall of the terminal (13) near the conductive sheet (15), and a plurality of limiting grooves (14) are provided on the outer wall of the terminal (13). A limiting block (22) slidably connected to the limiting grooves (14) is installed on the inner wall of the sliding sleeve (21), and a limiting ring (24) rotatably connected to the inner wall of the adjusting sleeve (23) is installed at one end of the adjusting sleeve (23), and the inner wall of the adjusting sleeve (23) is threadedly connected to the outer wall of the terminal (13).

6. The electronic device with adjustable resistance according to claim 5, characterized in that: The mounting seat (1), spring (18), positioning sleeve (19), sliding sleeve (21) and adjusting sleeve (23) are all made of insulating materials, and one end of the wiring assembly (10) outside the two mounting seats (1) is electrically connected to the conductive rod (7).

7. The electronic device with adjustable resistance according to claim 1, characterized in that: The lower end side wall of the sliding sleeve (21) is fixedly connected to the inner wall of the positioning sleeve (19), one end of the positioning sleeve (19) is in contact with the outer wall of one side of the conductive sheet (15), and a positioning groove (20) for the wire at one end of the wire clamp (25) to pass through is provided on one side of the positioning sleeve (19).

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