Electronic device with adjustable resistance

Abstract

The invention belongs to the technical field of electronic devices, and particularly relates to an electronic device with adjustable resistance. A porcelain tube is fixedly connected between a pair of bases; a coil is arranged on the porcelain tube; first wiring caps are arranged at the two ends of the porcelain tube, and the pair of first wiring caps are electrically connected with the two ends of the coil; the side walls of the pair of bases are each provided with a first groove and a second groove. A conductive sliding rod is rotationally connected between the pair of first grooves. The two ends of the conductive sliding rod are rotationally connected with second wiring caps. The invention relates to a resistance adjusting device, and aims to solve the problems that resistance adjustment is not accurate and rapid enough due to the operation mode that resistance adjustment is completed by firstly translating a sliding external member and then rotating the sliding external member, and the service life of an elastic sheet is affected due to large friction caused by contact between the elastic sheet and a coil during translation.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic devices, in particular to an electronic device with adjustable resistance. Background Art

[0002] Adjustable resistor is a common electronic device with a wide range of applications. Common types of adjustable resistors include potentiometers and rheostats. Potentiometers are usually of two types: rotary and sliding. Rotary potentiometers change the resistance value by rotating the shaft; sliding potentiometers change the resistance value by sliding contacts; rheostats are generally used to regulate larger currents and powers, such as in scenarios such as motor speed regulation and large-range adjustment of light brightness. There are obvious differences in their size, and they can be used in small experiments as well as in industry and large-scale scientific experiments.

[0003] A Chinese patent with patent number CN116168908B discloses a programmable adjustable sliding rheostat, including: a resistance wire winding drum, a sliding kit, and a gear ring; the sliding kit is provided with an axial adjustment motor and an axial adjustment gear to drive the sliding kit to move along the gear rod; a circumferential adjustment motor is fixedly provided on the sliding kit to drive the gear to rotate circumferentially around the resistance wire winding drum; a metal contact is fixedly provided on the gear ring and is in electrical contact with the resistance wire.

[0004] In the prior art, resistance adjustment is completed by first translating the sliding kit and then rotating it. However, this operation method still makes the resistance adjustment not accurate and fast enough, and the friction caused by the translation of the spring piece and the contact with the coil is large, which affects the service life of the spring piece. Therefore, the present invention provides an electronic device with adjustable resistance. Summary of the invention

[0005] In order to make up for the shortcomings of the existing technology, the resistance adjustment is completed by first translating the sliding kit and then rotating it. However, this operation method still makes the resistance adjustment not accurate and fast enough, and the friction caused by the translation of the spring piece and the contact with the coil is large, which affects the service life of the spring piece.

[0006] The technical solution adopted by the present invention to solve its technical problems is: an electronic device with adjustable resistance described in the present invention comprises a base; a porcelain tube is fixedly connected between a pair of the bases; a coil is arranged on the porcelain tube; a first wiring cap is arranged on both ends of the porcelain tube, and a pair of first wiring caps are electrically connected to both ends of the coil; a pair of side walls of the base are provided with a first groove and a second groove; a conductive sliding rod is rotatably connected between the pair of the first grooves; a second wiring cap is rotatably connected to both ends of the conductive sliding rod; a pair of the second wiring caps are fixedly connected to the side wall of the base through a U column; a lead screw is rotatably connected between the pair of the second grooves; a moving block is arranged between the conductive sliding rod and the lead screw; the side wall of the moving block is threadedly connected to the lead screw through a thread groove; the side wall of the moving block is slidably connected to the conductive sliding rod through a third groove; a circular groove is arranged on the side wall of the moving block, and the porcelain tube is located in the circular groove; a conductive block is fixedly connected to the side wall of the moving block, and the conductive block contacts the conductive sliding rod through the sliding groove; the moving block is not conductive; a rotating component is arranged in the moving block; the moving block is driven by the lead screw.

[0007] Preferably, the rotating assembly includes a power unit and an inner groove; an inner groove is provided in the moving block; a first gear is rotatably connected between the opposite side walls of the inner groove, and the first gear is sleeved on the conductive sliding rod; the inner circular wall of the circular groove is rotatably connected to an I-shaped ring block through a T-ring groove, and the I-shaped ring block and the side wall of the conductive block are rotatably connected; a pair of limit grooves are provided on the conductive sliding rod; a pair of limit blocks are fixedly connected to the inner circular wall of the first gear, and the limit blocks are slidably connected in the limit grooves; a group of tooth grooves are provided on the outer circular wall of the I-shaped ring block, and the first gear and the tooth grooves are meshed; a fixed block is fixedly connected to the inner circular wall of the I-shaped ring block; a pair of symmetrically distributed spring plates are fixedly connected to the fixed block, and the spring plates are in contact with the coil.

[0008] Preferably, the power unit includes a motor; the side wall of the base is fixedly connected to the motor via a support block; the output end of the motor is fixedly connected to one end of the lead screw; the conductive sliding rod and the lead screw are both fixedly connected to belt teeth; a pair of the belt teeth are driven by a synchronous belt.

[0009] Preferably, a pair of the base side walls are fixedly connected with square ring tubes through fixed columns; the side walls of the square ring tubes are rotatably connected with cross plates through cross grooves; an injection pipe is fixedly connected between the pair of cross plates; a group of injection grooves are opened on the injection pipe, and the injection grooves are arranged in a direction tangent to the coil; a fixing ring is fixedly connected to the inner circular wall of the I-shaped ring block, and the fixing ring is sleeved on the injection pipe; a first pipe is provided on the square ring tube on one side of the moving block, and the first pipe passes through the base and is fixedly connected to the output end of the air compressor.

[0010] Preferably, a refrigerator is fixedly connected to the side wall of the base; the air inlet pipe and the air outlet pipe of the refrigerator are connected through the second pipe, the third pipe and the first pipe respectively; and valves are provided on the first pipe and the second pipe.

[0011] Preferably, a fourth tube is provided on the first tube, and the fourth tube passes through the base and extends out of the porcelain tube; a valve is provided on the fourth tube; a spiral tube is fixedly connected to the end of the fourth tube, and the cross-section of the threaded tube is square; the spiral tube is fixedly connected to the inner wall of the porcelain tube; an outlet tube is fixedly connected to the other end of the spiral tube, and the outlet tube passes through the base.

[0012] Preferably, an arc ring is fixed on the inner circular wall of the I-shaped ring block; an arc guide plate is fixed between a pair of cross plates, and the arc guide plate is slidably connected in the arc ring; the arc guide plate is arranged at the lower end of the clockwise injection direction of the injection slot; a group of inclined grooves are opened on the arc guide plate, and the inclined grooves are arranged in the same direction as the injection direction of the injection slot; a group of guide grooves are arranged in the arc guide plate, and the guide grooves and the inclined grooves are cross-arranged.

[0013] Preferably, the side wall of the moving block is slidably connected with a shielding plate through a herringbone groove, and the side walls on both sides of the shielding plate are respectively fixedly connected to a pair of bases; the shielding plate is located above the lead screw.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The electronic device with adjustable resistance described in the present invention coordinates the movement of the moving block and the rotation of the rotating component, so that the spring sheet in contact with the coil moves and rotates at the same time, thereby avoiding the spring sheet moving in a straight line and then rotating, but moving along the spiral path of the coil. This movement method not only makes the adjustment of resistance more precise and saves time, but also greatly reduces the degree of wear on the spring sheet due to movement, thereby increasing the service life of the spring sheet and reducing the number of power sources used.

[0016] 2. An electronic device with adjustable resistance described in the present invention drives a fixed ring to move along the spiral line of a coil through an I-shaped ring block, so that the fixed ring drives the injection tube to rotate and moves on the injection tube at the same time. The fixed ring blocks the injection slot of the injection tube at the I-shaped ring block to prevent the compressed gas from being ejected from the injection slot in the I-shaped ring block. Then, due to the obstruction of the I-shaped ring block, impurities on the coil are cleaned and fall on the I-shaped ring block or even on the shrapnel. The injection slot is set in a direction tangent to the coil, which can best play the role of blowing up and cleaning impurities on the coil, avoiding the presence of too many impurities on the coil, resulting in poor contact, heating of the coil and other problems.

[0017] 3. The electronic device with adjustable resistance described in the present invention controls the valves on the first tube and the second tube to open alternately to select whether the gas enters the refrigerator. When the device is working, if the surface temperature of the coil is too high, the gas is introduced into the refrigerator to cool the compressed gas, so that the temperature of the gas finally acting on the coil is lower, thereby having a cooling effect while cleaning.

[0018] 4. The electronic device with adjustable resistance described in the present invention controls the valve on the fourth tube to select whether the gas with lower temperature enters the spiral tube, thereby cooling the inside of the porcelain tube, thereby indirectly cooling the coil on the porcelain tube.

[0019] 5. The electronic device with adjustable resistance described in the present invention is arranged clockwise below the injection slot through an arc guide plate, so that the injected gas can move along the inner circular wall of the arc guide plate, so that the gas with lower temperature can act on the coil to the maximum extent. When the device does not adjust the resistance, that is, when the arc guide plate does not rotate, the maximum cooling effect is achieved. At the same time, the impurities blown off by the compressed gas enter the inclined slot along the inner protective wall of the arc guide plate, and then leave the inner circular wall of the arc guide plate. Through the establishment of the guide slot, part of the gas is set along the bend of the guide slot, so that part of the gas changes direction and directly acts on the coil, achieving a better cooling effect.

[0020] 6. The electronic device with adjustable resistance described in the present invention can prevent impurities from being blown off the coil and falling on the lead screw, where they accumulate for a long time and affect the stable operation of the lead screw by setting up a shielding plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 It is a partial structural diagram of the present invention;

[0024] Figure 3 It is a partial structural diagram and a side sectional view of the present invention;

[0025] Figure 4 It is the side sectional view of the moving block and the exploded view of its internal structure;

[0026] Figure 5 It is a partial structural diagram of the present invention;

[0027] Figure 6 It is a front cross-sectional view in the present invention;

[0028] Figure 7 yes Figure 6 Enlarged view of point A in the middle;

[0029] Figure 8 yes Figure 6 Enlarged view of point B in the middle;

[0030] Fig. 9 is a structural diagram of the proximal end of the arc-shaped guide plate;

[0031] Fig.10 is a side sectional view of the arc-shaped guide plate;

[0032] Fig.11 It is a structural diagram of the proximal end of the square ring tube in the present invention.

[0033] In the figure: 1. base; 11. porcelain tube; 12. coil; 13. first wiring cap; 14. conductive slide rod; 15. second wiring cap; 16. lead screw; 17. moving block; 18. conductive block; 2. inner groove; 21. first gear; 22. T ring groove; 23. I-shaped ring block; 24. limit groove; 25. limit block; 26. tooth groove; 27. fixed block; 28. spring; 3. motor; 31. belt teeth; 32. synchronous belt; 4. fixed column; 41. square ring tube; 42. cross plate; 43. injection tube; 44. fixed ring; 45. first tube; 46. air compressor; 5. refrigerator; 51. second tube; 52. third tube; 6. fourth tube; 61. spiral tube; 62. outlet tube; 7. arc ring; 71. arc guide plate; 72. inclined groove; 73. guide groove; 8. shielding plate. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] Embodiment 1

[0036] like Figures 1 to 8As shown, an electronic device with adjustable resistance described in an embodiment of the present invention includes a base 1; a pair of bases 1 are fixedly connected with a porcelain tube 11; a coil 12 is arranged on the porcelain tube 11; first wiring caps 13 are arranged on both ends of the porcelain tube 11, and a pair of first wiring caps 13 and two ends of the coil 12 are electrically connected; a pair of side walls of the base 1 are provided with a first groove and a second groove; a conductive sliding rod 14 is rotatably connected between the pair of first grooves; a second wiring cap 15 is rotatably connected at both ends of the conductive sliding rod 14; a pair of second wiring caps 15 are fixedly connected to the side wall of the base 1 through a U column; a lead screw 16 is rotatably connected between the pair of second grooves; a moving block 17 is arranged between the conductive sliding rod 14 and the lead screw 16; the side wall of the moving block 17 is threadedly connected to the lead screw 16 through a thread groove; the side wall of the moving block 17 is slidably connected to the conductive sliding rod 14 through a third groove; the moving A circular groove is provided on the side wall of the moving block 17, and the porcelain tube 11 is located in the circular groove; a conductive block 18 is fixedly connected to the side wall of the moving block 17, and the conductive block 18 contacts the conductive slide rod 14 through the sliding groove; the moving block 17 is not conductive; a rotating assembly is provided in the moving block 17; the moving block 17 is driven by the lead screw 16; when working, the moving block 17 is driven to move by the rotation of the lead screw 16, and the movement of the moving block 17 and the rotation of the rotating assembly are coordinated, so that the spring piece 28 in contact with the coil 12 moves and rotates at the same time, thereby avoiding the movement path of the spring piece 28 to first move in a straight line and then rotate, but moves along the spiral shape of the coil 12. This movement method not only makes the adjustment of the resistance more accurate, but also saves time in adjusting the resistance, and the degree of wear of the spring piece 28 due to movement is also greatly reduced, thereby increasing the service life of the spring piece 28 and reducing the number of power sources used.

[0037] The rotating assembly includes a power unit and an inner groove 2; an inner groove 2 is provided in the moving block 17; a first gear 21 is rotatably connected between the opposite side walls of the inner groove 2, and the first gear 21 is sleeved on the conductive slide bar 14; the inner circular wall of the circular groove is rotatably connected to an I-shaped ring block 23 through a T-ring groove 22, and the I-shaped ring block 23 and the side wall of the conductive block 18 are rotatably connected; a pair of limit grooves 24 are provided on the conductive slide bar 14; a pair of limit blocks 25 are fixedly connected to the inner circular wall of the first gear 21, and the limit blocks 25 are slidably connected in the limit grooves 24; a group of tooth grooves 26 are provided on the outer circular wall of the I-shaped ring block 23, and the first gear 21 is meshed with the tooth grooves 26; a fixed block 27 is fixedly connected to the inner circular wall of the I-shaped ring block 23; a pair of symmetrically distributed springs 28 are fixedly connected to the fixed block 27, And the spring piece 28 is in contact with the coil 12; when working, the power unit drives the lead screw 16 and the conductive slide rod 14 to rotate, so that the lead screw 16 drives the moving block 17 to move, and at the same time, the movement of the moving block 17 will drive the first gear 21 inside it to move, because the limit block 25 slides in the limit groove 24, so that the conductive slide rod 14 is in the process of rotating. In summary, the first gear 21 can also rotate with the conductive slide rod 14 as the axis without affecting its movement with the moving block 17, thereby driving the I-shaped ring block 23 and the fixed block 27 and the spring piece 28 to rotate with the porcelain tube 11 as the axis, completing the spiral movement path of the spring piece 28, and conducting electricity to the conductive block 18 through the conductive slide rod 14, and then transmitted to the spring piece 28 through the I-shaped ring block 23 and the fixed block 27, thereby completing the work of adjusting the resistance.

[0038] The power unit includes a motor 3; the side wall of the base 1 is fixedly connected to the motor 3 through a support block; the output end of the motor 3 is fixedly connected to one end of the lead screw 16; the conductive slide rod 14 and the lead screw 16 are both fixedly connected to belt teeth 31; a pair of the belt teeth 31 are driven by a synchronous belt 32; when working, the synchronous belt 32 is used to drive the pair of belt teeth 31 to rotate, thereby driving the lead screw 16 and the conductive slide rod 14 to rotate at the same time.

[0039] Embodiment 2

[0040] like Figures 2 to 7As shown, on the basis of the first embodiment, structures such as the injection tube 43 and the refrigerator 5 are added, so that the surface of the coil 12 can be cooled while cleaning the coil 12. This design is very necessary for large sliding rheostats used in industry; a pair of side walls of the base 1 are fixedly connected with a square ring tube 41 through a fixed column 4; the side wall of the square ring tube 41 is rotatably connected with a cross plate 42 through a cross groove; a pair of cross plates 42 are fixedly connected with an injection tube 43; a group of injection grooves are opened on the injection tube 43, and the injection grooves are set in a direction tangent to the coil 12; a fixed ring 44 is fixedly connected to the inner circular wall of the I-shaped ring block 23, and the fixed ring 44 is sleeved on the injection tube 43; a first tube 45 is provided on the square ring tube 41 on one side of the moving block 17, and the first tube 45 passes through the base 1 and is fixed The output end of the air compressor 46 is connected; when working, the cross plate 42 rotates in the cross groove in the square ring tube 41, and the I-shaped ring block 23 drives the fixed ring 44 to move along the spiral line of the coil 12, so that the fixed ring 44 drives the injection pipe 43 to rotate while moving on the injection pipe 43. The fixed ring 44 blocks the injection groove of the injection pipe 43 at the I-shaped ring block 23 to prevent the compressed gas from being ejected from the injection groove in the I-shaped ring block 23. Then, due to the obstruction of the I-shaped ring block 23, the impurities on the coil 12 are cleaned up and fall on the I-shaped ring block 23 or even on the shrapnel 28. The direction of the injection groove is tangent to the coil 12, which can best play the role of blowing up and cleaning the impurities on the coil 12, avoiding the existence of too many impurities on the coil 12, resulting in poor contact, heating of the coil 12 and other problems.

[0041] A refrigerator 5 is fixedly connected to the side wall of the base 1; the air inlet pipe and the air outlet pipe of the refrigerator 5 are connected through the second tube 51, the third tube 52 and the first tube 45 respectively; valves are provided on the first tube 45 and the second tube 51; when working, the valves on the first tube 45 and the second tube 51 are controlled to open alternately to select whether the gas enters the refrigerator 5. When this device is working, if the surface temperature of the coil 12 is too high, the gas is introduced into the refrigerator 5 to cool the compressed gas, so that the temperature of the gas finally acting on the coil 12 is lower, so that it can not only clean but also cool down.

[0042] A fourth tube 6 is provided on the first tube 45, and the fourth tube 6 passes through the base 1 and extends out of the porcelain tube 11; a valve is provided on the fourth tube 6; a spiral tube 61 is fixedly connected to the end of the fourth tube 6, and the cross-section of the threaded tube is square; the spiral tube 61 is fixedly connected to the inner wall of the porcelain tube 11; an outlet tube 62 is fixedly connected to the other end of the spiral tube 61, and the outlet tube 62 passes through the base 1; when working, by controlling the valve on the fourth tube 6, it is selected whether the gas with lower temperature enters the spiral tube 61, so as to cool the inside of the porcelain tube 11, thereby indirectly cooling the coil 12 on the porcelain tube 11.

[0043] Embodiment 3

[0044] like Figure 1 , Figures 9 to 11 As shown, on the basis of the second embodiment, the addition of arc guide plate 71, baffle plate 8 and other structures can achieve better cooling effect on coil 12 and ensure long-term stable operation of lead screw 16; an arc ring 7 is fixedly connected to the inner circular wall of the I-shaped ring block 23; an arc guide plate 71 is fixedly connected between a pair of cross plates 42, and the arc guide plate 71 is slidably connected in the arc ring 7; the arc guide plate 71 is arranged at the lower end of the clockwise injection direction of the injection slot; a group of inclined grooves 72 are opened on the arc guide plate 71, and the inclined grooves 72 are arranged in the same direction as the injection direction of the injection slot; a group of guide grooves 73 are arranged in the arc guide plate 71, and the guide grooves 73 and the inclined grooves 72 are cross-arranged; when working, the arc ring 7 is driven to rotate by the I-shaped ring block 23, thereby driving the arc guide plate 71 and a pair of cross plates 42 rotate, and at the same time, the arc guide plate 71 slides in the arc ring 7. The arc guide plate 71 is arranged below the injection slot in the clockwise direction, so that the injected gas can move along the inner circular wall of the arc guide plate 71, so that the gas with lower temperature can act on the coil 12 to the maximum extent. In this device, the resistance is not adjusted, that is, when the arc guide plate 71 is not rotated, the maximum cooling effect is achieved. At the same time, the impurities blown down by the compressed gas enter the inclined groove 72 along the inner protective wall of the arc guide plate 71, and then leave the inner circular wall of the arc guide plate 71. Through the establishment of the guide groove 73, part of the gas is set along the bend of the guide groove 73, so that part of the gas directly acts on the coil 12 while moving along the arc guide plate 71, thereby better achieving a cooling effect.

[0045] The side wall of the movable block 17 is slidably connected with a baffle plate 8 through a herringbone groove, and the side walls on both sides of the baffle plate 8 are respectively fixedly connected to a pair of bases 1; the baffle plate 8 is located above the lead screw 16; during operation, the establishment of the baffle plate 8 can prevent impurities from being blown off the coil 12 and falling on the lead screw 16, where they accumulate for a long time and affect the stable operation of the lead screw 16.

[0046] Working principle: The moving block 17 is driven to move by the rotation of the lead screw 16. The movement of the moving block 17 and the rotation of the rotating assembly are coordinated, so that the spring piece 28 in contact with the coil 12 moves and rotates at the same time, thereby avoiding the spring piece 28 moving in a straight line and then rotating. Instead, it moves along the spiral shape of the coil 12. This movement method not only makes the adjustment of the resistance more accurate and saves time, but also greatly reduces the degree of wear on the spring piece 28, thereby increasing the service life of the spring piece 28 and reducing the number of power sources used. The power unit drives the lead screw 16 and the conductive slide rod 14 to rotate, so that the lead screw 16 drives the moving block 17 to move. At the same time, the movement of the moving block 17 drives the first gear 2 inside it. 1 moves, because the limit block 25 slides in the limit groove 24, so that the conductive slide bar 14 is in the process of rotating. In summary, the first gear 21 can rotate with the conductive slide bar 14 as the axis without affecting its movement with the moving block 17, thereby driving the I-shaped ring block 23 and the fixed block 27 and the spring piece 28 to rotate with the porcelain tube 11 as the axis, completing the spiral movement path of the spring piece 28, and conducting electricity to the conductive block 18 through the conductive slide bar 14, and then passing it to the spring piece 28 through the I-shaped ring block 23 and the fixed block 27, thereby completing the work of adjusting the resistance, and driving through the synchronous belt 32, thereby causing the pair of belt teeth 31 to rotate, and at the same time driving the lead screw 16 and the conductive slide bar 14 to rotate at the same time, and through the cross plate 42 in the cross groove in the square ring tube 41 The fixed ring 44 is driven to move along the spiral line of the coil 12 through the I-shaped ring block 23, so that the fixed ring 44 drives the injection pipe 43 to rotate and moves on the injection pipe 43 at the same time. The fixed ring 44 blocks the injection slot of the injection pipe 43 at the I-shaped ring block 23 to prevent the compressed gas from being ejected from the injection slot in the I-shaped ring block 23. Then, due to the obstruction of the I-shaped ring block 23, the impurities on the coil 12 are cleaned and fall on the I-shaped ring block 23 or even on the shrapnel 28. The direction of the injection slot is tangential to the coil 12, which can best play the role of blowing up and cleaning the impurities on the coil 12, avoiding the existence of too many impurities on the coil 12, resulting in poor contact, heating of the coil 12 and other problems. By controlling the valves on the first tube 45 and the second tube 51 to be opened alternately, Select whether the gas enters the refrigerator 5. When the device is working, if the surface temperature of the coil 12 is too high, the gas is introduced into the refrigerator 5 to cool the compressed gas, so that the temperature of the gas finally acting on the coil 12 is relatively low, so that it can cool down the temperature while cleaning. By controlling the valve on the fourth tube 6, it is selected whether the gas with lower temperature enters the spiral tube 61 to cool down the inside of the porcelain tube 11, thereby indirectly cooling the coil 12 on the porcelain tube 11. The arc ring 7 is driven to rotate by the I-shaped ring block 23, and then the arc guide plate 71 and a pair of cross plates 42 are driven to rotate. At the same time, the arc guide plate 71 slides in the arc ring 7. The arc guide plate 71 is arranged clockwise below the injection slot, so that the gas ejected can beIt can move along the inner wall of the arc-shaped guide plate 71, so that the gas with a lower temperature can act on the coil 12 to the maximum extent. In this device, the resistance is not adjusted, that is, when the arc-shaped guide plate 71 is not rotating, the maximum effect is played to cool down. At the same time, the impurities blown down by the compressed gas enter the inclined groove 72 along the inner wall of the arc-shaped guide plate 71, and then leave the inner wall of the arc-shaped guide plate 71. Through the establishment of the guide groove 73, part of the gas is set along the bending of the guide groove 73, so that part of the gas directly acts on the coil 12 while moving along the arc-shaped guide plate 71, which better plays a cooling role. Through the establishment of the shielding plate 8, it can be prevented that the impurities are blown off from the coil 12 and fall on the lead screw 16, and accumulate for a long time, affecting the stable operation of the lead screw 16.

[0047] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An electronic device with adjustable resistance, characterized in that: The invention comprises a base (1); a pair of the bases (1) are fixedly connected with a porcelain tube (11); a coil (12) is arranged on the porcelain tube (11); first wiring caps (13) are arranged on both ends of the porcelain tube (11), and the first wiring caps (13) and the two ends of the coil (12) are electrically connected; a pair of side walls of the base (1) are provided with a first groove and a second groove; a conductive sliding rod (14) is rotatably connected between the pair of the first grooves; a second wiring cap (15) is rotatably connected at both ends of the conductive sliding rod (14); a pair of the second wiring caps (15) are fixedly connected to the side wall of the base (1) through a U column; a lead screw (16) is rotatably connected between the pair of the second grooves ); a moving block (17) is provided between the conductive sliding rod (14) and the lead screw (16); the side wall of the moving block (17) is threadedly connected to the lead screw (16) through a threaded groove; the side wall of the moving block (17) is slidingly connected to the conductive sliding rod (14) through a third groove; a circular groove is provided on the side wall of the moving block (17), and the porcelain tube (11) is located in the circular groove; a conductive block (18) is fixedly connected to the side wall of the moving block (17), and the conductive block (18) is in contact with the conductive sliding rod (14) through the sliding groove; the moving block (17) is not conductive; a rotating component is provided in the moving block (17); the moving block (17) is driven by the lead screw (16).

2. The electronic device with adjustable resistance according to claim 1, characterized in that: The rotating assembly comprises a power unit and an inner groove (2); the inner groove (2) is provided in the moving block (17); a first gear (21) is rotatably connected between opposite side walls of the inner groove (2), and the first gear (21) is sleeved on the conductive sliding rod (14); the inner circular wall of the circular groove is rotatably connected to an I-shaped ring block (23) through a T-ring groove (22), and the I-shaped ring block (23) and the side wall of the conductive block (18) are rotatably connected; a pair of limit grooves (24) are provided on the conductive sliding rod (14) ); a pair of limit blocks (25) are fixedly connected to the inner circular wall of the first gear (21), and the limit blocks (25) are slidably connected in the limit grooves (24); a group of tooth grooves (26) are opened on the outer circular wall of the I-shaped ring block (23), and the first gear (21) and the tooth grooves (26) are meshed; a fixed block (27) is fixedly connected to the inner circular wall of the I-shaped ring block (23); a pair of symmetrically distributed spring sheets (28) are fixedly connected to the fixed block (27), and the spring sheets (28) are in contact with the coil (12).

3. The electronic device with adjustable resistance according to claim 2, characterized in that: The power unit comprises a motor (3); the motor (3) is fixedly connected to the side wall of the base (1) via a support block; the output end of the motor (3) is fixedly connected to one end of a lead screw (16); belt teeth (31) are fixedly connected to the conductive sliding rod (14) and the lead screw (16); and a pair of the belt teeth (31) are driven by a synchronous belt (32).

4. The electronic device with adjustable resistance according to claim 3, characterized in that: A pair of side walls of the base (1) are fixedly connected to a square ring tube (41) via a fixing column (4); the side walls of the square ring tube (41) are rotatably connected to a cross plate (42) via a cross groove; an injection pipe (43) is fixedly connected between the pair of cross plates (42); a group of injection slots are opened on the injection pipe (43), and the injection slots are arranged in a direction tangent to the coil (12); a fixing ring (44) is fixedly connected to the inner circular wall of the I-shaped ring block (23), and the fixing ring (44) is sleeved on the injection pipe (43); a first pipe (45) is provided on the square ring tube (41) on one side of the moving block (17), and the first pipe (45) passes through the base (1) and is fixedly connected to the output end of the air compressor (46).

5. The electronic device with adjustable resistance according to claim 4, characterized in that: A refrigerator (5) is fixedly connected to the side wall of the base (1); an air inlet pipe and an air outlet pipe of the refrigerator (5) are respectively connected through a second pipe (51), a third pipe (52) and a first pipe (45); and valves are provided on the first pipe (45) and the second pipe (51).

6. The electronic device with adjustable resistance according to claim 5, characterized in that: A fourth tube (6) is provided on the first tube (45), and the fourth tube (6) passes through the base (1) and extends out of the porcelain tube (11); a valve is provided on the fourth tube (6); a spiral tube (61) is fixedly connected to the end of the fourth tube (6), and the cross section of the spiral tube is square; the spiral tube (61) is fixedly connected to the inner wall of the porcelain tube (11); an outlet tube (62) is fixedly connected to the other end of the spiral tube (61), and the outlet tube (62) passes through the base (1).

7. The electronic device with adjustable resistance according to claim 6, characterized in that: An arc ring (7) is fixedly connected to the inner circular wall of the I-shaped ring block (23); an arc guide plate (71) is fixedly connected between a pair of cross plates (42), and the arc guide plate (71) is slidably connected in the arc ring (7); the arc guide plate (71) is arranged at the lower end of the injection slot in the clockwise injection direction; a group of inclined grooves (72) are opened on the arc guide plate (71), and the inclined grooves (72) are arranged in the same direction as the injection direction of the injection slot; a group of guide grooves (73) are arranged in the arc guide plate (71), and the guide grooves (73) and the inclined grooves (72) are arranged crosswise.

8. The electronic device with adjustable resistance according to claim 7, characterized in that: The side wall of the moving block (17) is slidably connected to a shielding plate (8) via a herringbone groove, and the side walls on both sides of the shielding plate (8) are respectively fixedly connected to a pair of bases (1); the shielding plate (8) is located above the lead screw (16).

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