Resistor capable of adjusting resistance

Abstract

The invention relates to the technical field of resistors, and discloses a resistor capable of adjusting resistance, the resistor comprises a porcelain cylinder, a support, a metal rod and a sliding device, a resistance wire is distributed outside the middle of the porcelain cylinder in a sleeving manner, and lug plates are fixedly connected and distributed at the two ends of the front part of the resistance wire; the supports are installed at the two ends of the porcelain cylinder, bottom plates are fixedly arranged at the outer ends of the bottoms of the supports, installation grooves are formed in the bottom plates, extension plates are fixedly arranged at the tops of the supports, and supporting plates are fixedly arranged at the front ends of the extension plates. A first limiting hole is formed in the middle of the interior of the sliding device and connected to the exterior of the metal rod in a penetrating mode, sliding pieces are connected to the front end and the rear end of the bottom of the sliding device, the circle of the inner side of each sliding piece is of a rounded corner structure, and a protruding rod is fixedly arranged in the middle of the inner end. Good electric contact between the slip sheet and the resistance wire can be guaranteed, resistance value fluctuation caused by uneven contact of a sheet structure is avoided, the friction area between the slip sheet and the resistance wire can be reduced, friction force is reduced, and abrasion is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of resistors, in particular to a resistor with adjustable resistance. Background Art

[0002] A resistor is generally referred to as a resistor. It is a current-limiting component. When a resistor is connected to a circuit, it can limit the current passing through the branch it is connected to. A resistor with an unchangeable resistance value is called a fixed resistor, and a resistor with a variable resistance value is called a potentiometer or variable resistor.

[0003] Traditional sliding rheostats are prone to poor contact between the slider and the resistor wire during use. This not only affects the resistance adjustment accuracy but can also lead to unstable overall resistor performance. Long-term use can lead to rapid wear, affecting adjustment accuracy and lifespan. In some applications, the rheostat needs to be adjusted within a specific resistance range and maintain that value. However, traditional sliding rheostats often lack such limit and locking functions. Therefore, a corresponding technical solution is needed to address this issue. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a resistor with adjustable resistance, which solves the technical problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A resistor with adjustable resistance, comprising a porcelain tube, a bracket, a metal rod and a sliding device, wherein a resistance wire is sheathed and distributed on the outside of the middle of the porcelain tube, and the front ends of the resistance wire are fixedly connected to wiring pieces; The bracket is installed at both ends of the porcelain cylinder, the bottom outer end of the bracket is fixed with a bottom plate, the interior of the bottom plate is provided with a mounting groove, the top of the bracket is fixed with an extension plate, and the front end of the extension plate is fixed with a support plate; The metal rod is fixed between the extension plates and is connected to an extension column extending outward. A wiring pad is fixed to the outer end of the extension plate. The outer end of the extension column passes through the wiring pad and is connected to a second locking nut. A limiting hole is opened in the middle of the interior of the sliding device, and the limiting hole is connected to the outside of the metal rod. The front and rear ends of the bottom of the sliding device are connected to sliding plates. The inner side of the sliding plate is a rounded structure and a protruding rod is fixed at the middle of the inner end.

[0006] Preferably, the terminal piece is a double-group structure and is connected to a positioning screw through a thread in the middle, the upper end of the positioning screw is fixed with a rotating nut, and the lower end of the positioning screw is connected to a locking nut through a thread; the double-group structure terminal piece is used to install the circuit connector inside it, and the connection between the rotating nut, positioning screw and locking nut and the external circuit is more firm and reliable, reducing the problem of poor contact caused by loose connection.

[0007] Preferably, a data display screen is provided above the sliding device, a second limiting hole is provided at the lower interior of the sliding device, a limiting rod is fixedly provided near the lower end between the extension plates, and the limiting rod is connected through the second limiting hole; the data display screen allows the user to understand the current resistance value of the resistor in real time, and the user can control the resistance value more accurately when adjusting the resistance value, avoiding resistance value deviation caused by blind adjustment, and the user can gradually adjust the position of the sliding device according to the feedback of the data display screen until the desired resistance value is reached, greatly improving the accuracy and efficiency of the adjustment, and the second limiting hole is used to position the sliding device outside the limiting rod for stable limited sliding, with a high safety factor.

[0008] The top end face of said sliding panel also is provided with a toothed connecting strip which is cooperatively connected with said toothed connecting strip, and the bottom end face of said toothed connecting strip is connected with said toothed connecting strip by a spring.

[0009] Preferably, limiting claws are fixedly distributed on both sides of the sliding device, and the limiting claws are distributed around the limiting hole. A positioning head is fixed on the end of the limiting claw, and the positioning head is in contact with the outer wall of the metal rod; the limiting claws and the positioning head are located in the limiting hole to limit the sliding, thereby assisting the sliding device to be more stable when moving horizontally.

[0010] Preferably, a transverse adjustment mechanism is provided in front of the sliding device, and the transverse adjustment mechanism includes an axle seat 1, a fixed shaft 1, an axle plate, an adjustment gear and a transverse plate. The axle seat 1 is fixedly arranged in the middle of the front part of the sliding device, the fixed shaft 1 is rotatably connected to the front end of the axle seat 1, and the adjustment gear is fixedly arranged at the front end of the fixed shaft 1; the transverse plate is fixedly arranged between the support plates, and the upper end of the transverse plate is provided with tooth grooves, and the adjustment gear is meshed and connected above the tooth grooves; the axle seat 1 is used to extend to the front end of the sliding device to rotatably support the fixed shaft 1 and the adjustment gear, and the tooth groove is used to mesh the adjustment gear to accurately control the movement.

[0011] Preferably, the outer part of the fixed shaft one is rotatably connected to a shaft cylinder near the front end, one end of the shaft plate is fixed to the outside of the shaft cylinder, and the other end of the shaft plate is fixed with a fixing rod, and the fixing rod is fixed to the front end of the sliding device; the fixing rod is used to fix the support shaft plate to the front end of the sliding device, and the supporting shaft plate is used to fix the shaft cylinder to the other end, and the shaft cylinder is used to rotatably support the fixed shaft one.

[0012] The locking mechanism is configured to lock the locking mechanism in the locking cam, wherein the locking cam is secured to the locking cam by a secure latch and secured to the base for locking the locking cam.

[0013] Preferably, the locking structure includes a rotary wheel, a rotating screw, a screw barrel and a positioning seat, the screw barrel is connected to the lower end of the support plate, the rotating screw is connected to the inside of the screw barrel by a thread, the rotary wheel is fixedly arranged at the lower end of the rotating screw, and the positioning seat is rotatably connected to the upper end of the rotating screw; when the required resistance value is adjusted to the desired resistance value, the protruding rod can be fixed in this position by the locking structure to prevent it from moving due to vibration or external force, thereby ensuring the stability of the resistance value, the screw barrel is used to limit the upper and lower adjustment of the rotating screw, the rotary wheel is used for hand-held rotation and adjustment of the rotating screw, and the positioning seat is used to fasten and lock it to the bottom of the horizontal plate, thereby achieving reliable locking, simple operation, strong locking force, and being able to meet the needs of different application scenarios, ensuring that the resistance value of the resistor will not change due to external factors during operation, and improving the stability and reliability of the equipment.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) By having a rounded corner structure around the inner side of the slider and a convex rod fixed at the middle of the inner end, the contact between the convex rod and the resistance wire is smoother, and the rounded corner structure avoids the scratching of the resistance wire by the sharp edge, reduces the wear of the resistance wire, and extends the service life of the resistance wire. At the same time, the raised contact surface can ensure good electrical contact between the slider and the resistance wire, avoid the fluctuation of the resistance value caused by the uneven contact of the sheet structure, and also help to reduce the friction area between the slider and the resistance wire, reduce the friction force, and thus reduce wear; (2) By opening the limiting hole 1 and the limiting hole 2 inside the sliding device, it is possible to ensure that the sliding device is located outside the metal rod and the limiting rod and moves in a stable linear manner, thereby preventing the sliding device from deflecting or shaking during movement. The precise linear motion enables the slider to move accurately along the resistance wire, thereby improving the accuracy of resistance value adjustment, reducing resistance value fluctuations caused by the instability of the sliding device, and enhancing the stability of the resistor; (3) The transverse adjustment mechanism provided in front of the sliding device facilitates manual control to adjust the resistance value. Combined with the addition of a limit locking mechanism, the sliding contact can be firmly locked after the resistor is adjusted to the required resistance value, preventing it from moving due to vibration or external force, thereby ensuring the stability of the resistance value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall front upper perspective structure of the present invention; Figure 2 This is a schematic diagram of the overall front bottom perspective structure of the present invention; Figure 3 This is a schematic diagram of the overall rear lower perspective structure of the present invention; Figure 4 This is a schematic diagram of the partial structure of the present invention from a side lower perspective at the middle; Figure 5 This is a schematic diagram of the partial structure of the present invention from the front upper perspective at the middle position; Figure 6 For the present invention Figure 2 A in the middle is an enlarged structural diagram; Figure 7 For the present invention Figure 4 The enlarged structural diagram at B in the middle; Figure 8 For the present invention Figure 5 The enlarged structural diagram at C in the middle; Figure 9 It is a partially enlarged structural diagram of the lateral adjustment mechanism of the present invention; Figure 10It is a partial enlarged structural diagram of the limit locking mechanism of the present invention; Figure 11 It is a schematic diagram of the locking structure of the present invention.

[0016] In the figure: 1, porcelain cylinder; 11, resistance wire; 12, terminal lug; 121, positioning screw; 122, rotating nut; 123, locking nut 1; 2. Bracket; 21. Bottom plate; 211. Mounting slot; 22. Extension plate; 23. Support plate; 3. Metal rod; 31. Extension column; 32. Wiring pad; 33. Lock nut 2; 4. Sliding device; 401. Limiting hole 1; 402. Limiting hole 2; 41. Sliding piece; 411. Protruding rod; 412. Connecting wire; 413. Movable groove; 414. Movable shaft; 415. Positioning plate; 42. Limiting rod; 43. Limiting claw; 431. Positioning head; 44. Spring rod; 441. Fixing block; 5. Transverse adjustment mechanism; 51. Shaft seat 1; 52. Fixed shaft 1; 521. Shaft cylinder; 522. Shaft plate; 523. Fixed rod; 53. Adjusting gear; 54. Transverse plate; 541. Tooth groove; 542. Limiting groove; 55. Limit locking mechanism; 551. Support; 552. Shaft seat 2; 553. Fixed shaft 2; 554. Support plate; 555. Limiting rod; 556. Rotating wheel; 557. Rotating screw; 558. Screw cylinder; 559. Positioning seat. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figures 1-11 The embodiment of the present invention provides a technical solution: a resistor with adjustable resistance, comprising a porcelain tube 1, a bracket 2, a metal rod 3 and a sliding device 4. A resistance wire 11 is sheathed and distributed on the outside of the middle of the porcelain tube 1, and wiring pieces 12 are fixedly connected to the front ends of the resistance wire 11; The bracket 2 is mounted on both ends of the porcelain cylinder 1. A bottom plate 21 is fixed to the outer end of the bottom of the bracket 2. A mounting groove 211 is opened inside the bottom plate 21. The mounting groove 211 allows the resistor to be conveniently mounted on other equipment through the bottom plate 21, thereby improving the convenience and stability of installation. An extension plate 22 is fixed to the top of the bracket 2. A support plate 23 is fixed to the front end of the extension plate 22. The support plate 23 provides a stable mounting base for other components such as the lateral adjustment mechanism 5, thereby ensuring the stability of the entire resistor structure. The metal rod 3 is fixed between the extension plates 22 and is connected to an extension column 31 extending outward. The outer end of the extension plate 22 is fixed with a wiring pad 32. The outer end of the extension column 31 passes through the wiring pad 32 and is connected to a locking nut 33, which further facilitates the connection of the resistor with other circuits and improves the convenience of use. A limiting hole 401 is provided in the middle of the interior of the sliding device 4, and the limiting hole 401 passes through and is connected to the outside of the metal rod 3. The front and rear ends of the bottom of the sliding device 4 are connected to a sliding plate 41. The inner side of the sliding plate 41 is a rounded structure and a protruding rod 411 is fixed in the middle of the inner end.

[0019] Further improvement, such as Figure 1 、 Figure 2 、 Figure 6 As shown, the terminal piece 12 is a double-group structure and a positioning screw 121 is connected through a thread in the middle. A rotating nut 122 is fixed to the upper end of the positioning screw 121, and a locking nut 123 is connected to the lower end of the positioning screw 121 through a thread. The double-group structure of the terminal block 12 is used to install the circuit connector therein, and the connection between the rotating nut 122, the positioning screw 121 and the locking nut 123 and the external circuit is more firm and reliable, reducing the problem of poor contact caused by loose connection.

[0020] Further improvement, such as Figure 1 、 Figure 5 As shown, a data display screen is provided above the sliding device 4, a second limiting hole 402 is provided at the lower portion of the sliding device 4, and a limiting rod 42 is fixedly provided near the lower end between the extension plates 22, and the limiting rod 42 is connected to the interior of the second limiting hole 402; The data display screen allows the user to understand the current resistance value of the resistor in real time. The user can control the resistance value more accurately when adjusting it, avoiding resistance value deviation caused by blind adjustment. The user can gradually adjust the position of the sliding device 4 according to the feedback of the data display screen until the required resistance value is reached, which greatly improves the accuracy and efficiency of the adjustment. The limit hole 402 is used to position the sliding device 4 outside the limit rod 42 for stable limited sliding, with a high safety factor.

[0021] Further improvement, such as Figure 7 、 Figure 8 As shown, a positioning plate 415 is fixedly provided at the front and rear ends of the bottom of the sliding device 4. The lower end of the positioning plate 415 is rotatably connected to a movable shaft 414. The upper end of the slide 41 is provided with a movable groove 413. The movable shaft 414 is fixed between the movable grooves 413. A connecting wire 412 is electrically connected between the upper end of the protruding rod 411 and the sliding device 4. A fixing block 441 is fixed near the upper end of the inner side wall of the slide 41, and a spring rod 44 is connected between the fixing blocks 441; The movable groove 413 is used to movably adjust the positioning plate 415, the movable shaft 414 is used to movably support the positioning plate 415, the positioning plate 415 is used to movably support the slide 41 downward, and the fixed block 441 is used to support the slide 41 through the elastic action of the spring rod 44. The spring rod 44 can provide a certain elastic support for the slide 41, so that the slide 41 and the resistance wire 11 maintain appropriate contact pressure. When the slide 41 moves on the resistance wire 11, the spring rod 44 can automatically adjust the pressure according to actual conditions to ensure that the slide 41 and the resistance wire 11 always maintain a good contact state, which not only avoids the accelerated wear of the resistance wire 11 due to excessive pressure, but also prevents the problem of poor contact due to too little pressure, further improving the contact stability and the performance of the resistor.

[0022] Further improvement, such as Figure 5 As shown, the sliding device 4 is fixedly provided with limit claws 43 on both sides. The limit claws 43 are distributed around the limit hole 401. The ends of the limit claws 43 are fixed with positioning heads 431. The positioning heads 431 contact the outer wall of the metal rod 3. The limiting claw 43 and the positioning head 431 are located in the limiting hole 1 401 and slide within a circle, thereby assisting the sliding device 4 to move more stably in transverse direction.

[0023] Further improvement, such as Figure 4 、 Figure 9 As shown, a transverse adjustment mechanism 5 is provided in front of the sliding device 4. The transverse adjustment mechanism 5 includes an axle seat 1 51, a fixed axle 1 52, an axle plate 522, an adjustment gear 53 and a transverse plate 54. The axle seat 1 51 is fixedly provided in the middle of the front part of the sliding device 4. The fixed axle 1 52 is rotatably connected to the front end of the axle seat 1 51. The adjustment gear 53 is fixedly provided at the front end of the fixed axle 1 52. The horizontal plate 54 is fixed between the support plates 23. The upper end of the horizontal plate 54 is provided with tooth grooves 541. The adjustment gear 53 is meshed and connected to the upper portion of the tooth grooves 541. The shaft seat 1 51 is used to extend toward the front end of the sliding device 4 to rotatably support the fixed shaft 1 52 and the adjusting gear 53 , and the tooth groove 541 is used to engage the adjusting gear 53 to precisely control the movement.

[0024] Further improvement, such as Figure 9As shown, the outer portion of the fixed shaft 1 52 is rotatably connected to a shaft cylinder 521 near the front end. One end of a shaft plate 522 is fixed to the outer portion of the shaft cylinder 521. The other end of the shaft plate 522 is fixed to a fixing rod 523. The fixing rod 523 is fixed to the front end of the sliding device 4. The fixing rod 523 is used to fix the support shaft plate 522 to the front end of the sliding device 4, and the support shaft plate 522 is used to fix the shaft cylinder 521 to the other end. The shaft cylinder 521 is used to rotate and support the fixed shaft 52.

[0025] Further improvement, such as Figure 10 As shown, the lateral adjustment mechanism 5 also includes a limited locking mechanism 55, which includes a support 551, a second shaft seat 552, a second fixed shaft 553, a support plate 554 and a limit rod 555. The support 551 is fixedly arranged at the middle of the outer side of the adjustment gear 53, the second shaft seat 552 is fixedly arranged at the middle of the outer side of the support 551, the second fixed shaft 553 is rotatably connected to the outer end of the second shaft seat 552, the support plate 554 is an L-shaped plate structure, and the inner upper end is fixedly arranged at the outer end of the second fixed shaft 553, and the lower end of the support plate 554 is provided with a locking structure. The limiting rod 555 is fixed to the inner end of the support plate 554. The front end of the horizontal plate 54 is provided with a limiting groove 542. The limiting rod 555 is slidably connected to the inner portion of the limiting groove 542. The support 551 and the shaft seat 2 552 are used to fix the fixed shaft 2 553 to the outside of the adjustment gear 53 and rotatably support the fixed shaft 2 553. The fixed shaft 2 553 is used to fix the support plate 554 with an L-shaped plate structure to the outer end. The support plate 554 is used to support the locking structure downward. The limiting groove 542 is used to limit the sliding adjustment limit rod 555 to assist the support plate 554 in stable lateral movement, so as to cooperate with the lateral adjustment mechanism 5 to stabilize the lateral movement.

[0026] Specific improvements, such as Figure 11 As shown, the locking structure includes a rotating wheel 556, a rotating screw 557, a screw barrel 558 and a positioning seat 559. The screw barrel 558 is connected to the lower end of the support plate 554, and the rotating screw 557 is connected to the interior of the screw barrel 558 by a thread. The rotating wheel 556 is fixed to the lower end of the rotating screw 557, and the positioning seat 559 is rotatably connected to the upper end of the rotating screw 557. When the required resistance value is adjusted, the protruding rod 411 can be fixed in this position through the locking structure to prevent it from moving due to vibration or external force, thereby ensuring the stability of the resistance value. The screw barrel 558 is used to limit the upper and lower adjustment of the rotating screw 557, the rotating wheel 556 is used to hand-rotate and adjust the rotating screw 557, and the positioning seat 559 is used to fasten and lock it to the bottom of the horizontal plate 54 to achieve reliable locking, simple operation, strong locking force, and can meet the needs of different application scenarios, ensuring that the resistance value of the resistor will not change due to external factors during operation, thereby improving the stability and reliability of the equipment.

[0027] The resistance value is changed by moving the sliding contact "slide 41 and protruding rod 411" on the resistance track "resistance wire 11" to reduce friction and wear and improve contact stability; A limit locking mechanism 55 is added to the lateral adjustment mechanism 5 so that after the resistance value is adjusted to a desired value, the sliding contact can be firmly locked to prevent it from moving due to vibration or external force.

[0028] Working principle: Install the resistor body through the mounting slot 211, the bracket 2 and the bottom plate 21 to the device, and connect the wires through the wiring lug 12 and the wiring pad 32; The handheld rolling operation adjustment gear 53 is located above the tooth groove 541 and is rolled to adjust the appropriate position. After the adjustment is completed, the handheld rotating wheel 556 controls the rotation of the screw 557 located inside the screw barrel 558 to adjust the positioning seat 559 to be tightened and locked to the bottom of the horizontal plate 54; The protruding rod 411 at the inner end of the slide 41 is located outside the resistance wire 11 and is moved and adjusted to change the resistance value. The data display screen above the sliding device 4 accurately displays the data.

[0029] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0030] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A resistor with adjustable resistance, comprising a porcelain tube (1), a bracket (2), a metal rod (3) and a sliding device (4), characterized in that: A resistance wire (11) is sheathed and distributed on the outside of the middle of the porcelain cylinder (1), and wiring pieces (12) are fixedly connected and distributed at both ends of the front of the resistance wire (11); The bracket (2) is mounted on both ends of the porcelain cylinder (1), a bottom plate (21) is fixedly provided at the outer end of the bottom of the bracket (2), a mounting groove (211) is provided inside the bottom plate (21), an extension plate (22) is fixedly provided at the top of the bracket (2), and a support plate (23) is fixedly provided at the front end of the extension plate (22); The metal rod (3) is fixed between the extension plates (22) and is connected to an extension column (31) extending toward the outer end. A wiring pad (32) is fixed to the outer end of the extension plate (22). The outer end of the extension column (31) passes through the wiring pad (32) and is connected to a second locking nut (33). A limiting hole (401) is provided in the middle of the interior of the sliding device (4), and the limiting hole (401) is connected to the outside of the metal rod (3). The front and rear ends of the bottom of the sliding device (4) are connected to a sliding plate (41), and the inner side of the sliding plate (41) is a rounded structure and a protruding rod (411) is fixed at the middle of the inner end.

2. The resistor with adjustable resistance according to claim 1, characterized in that: The terminal piece (12) is a double-group structure and is threadedly connected to a positioning screw (121) in the middle. A rotating nut (122) is fixed to the upper end of the positioning screw (121), and a locking nut (123) is threadedly connected to the lower end of the positioning screw (121).

3. The resistor with adjustable resistance according to claim 1, characterized in that: A data display screen is provided above the sliding device (4), a second limiting hole (402) is provided at the lower portion of the interior of the sliding device (4), a limiting rod (42) is fixedly provided near the lower end between the extension plates (22), and the limiting rod (42) is connected to the interior of the second limiting hole (402).

4. The resistor with adjustable resistance according to claim 3, characterized in that: A positioning plate (415) is fixedly provided at the front and rear ends of the bottom of the sliding device (4); the lower end of the positioning plate (415) is rotatably connected to a movable shaft (414); the upper end of the sliding plate (41) is provided with a movable groove (413); the movable shaft (414) is fixed between the movable grooves (413); and a connecting wire (412) is electrically connected between the upper end of the protruding rod (411) and the sliding device (4); A fixing block (441) is fixedly provided near the upper end of the inner side wall of the slide (41), and a spring rod (44) is connected between the fixing blocks (441).

5. The resistor with adjustable resistance according to claim 4, characterized in that: Limiting claws (43) are fixedly distributed on both sides of the sliding device (4), and the limiting claws (43) are distributed around the limiting hole (401). Positioning heads (431) are fixedly provided at the ends of the limiting claws (43), and the positioning heads (431) contact the outer side wall of the metal rod (3).

6. The resistor with adjustable resistance according to claim 1, characterized in that: A transverse adjustment mechanism (5) is provided in front of the sliding device (4), and the transverse adjustment mechanism (5) includes an axle seat (51), a fixed axle (52), an axle plate (522), an adjustment gear (53) and a transverse plate (54), wherein the axle seat (51) is fixedly provided at the middle of the front portion of the sliding device (4), the fixed axle (52) is rotatably connected to the front end of the axle seat (51), and the adjustment gear (53) is fixedly provided at the front end of the fixed axle (52); The transverse plate (54) is fixedly arranged between the support plates (23), and tooth grooves (541) are distributed on the upper end of the transverse plate (54), and the adjusting gear (53) is meshedly connected to the upper side of the tooth grooves (541).

7. The resistor with adjustable resistance according to claim 6, characterized in that: The outer portion of the fixed shaft (52) is rotatably connected to a shaft cylinder (521) near the front end thereof, one end of the shaft plate (522) is fixedly arranged on the outer portion of the shaft cylinder (521), and the other end of the shaft plate (522) is fixedly provided with a fixing rod (523), and the fixing rod (523) is fixedly arranged on the front end of the sliding device (4).

8. The resistor with adjustable resistance according to claim 6, characterized in that: The transverse adjustment mechanism (5) further includes a limited locking mechanism (55), the limited locking mechanism (55) including a support (551), a shaft seat (552), a fixed shaft (553), a support plate (554) and a limited rod (555), the support (551) being fixedly arranged at the middle of the outer side of the adjustment gear (53), the shaft seat (552) being fixedly arranged at the middle of the outer side of the support (551), the fixed shaft (553) being rotatably connected to the outer end of the shaft seat (552), the support plate (554) being an L-shaped plate structure and having its inner upper end fixedly arranged at the outer end of the fixed shaft (553), and the lower end of the support plate (554) being provided with a locking structure; The limiting rod (555) is fixedly arranged at the inner end of the support plate (554), a limiting slot (542) is provided at the front end of the transverse plate (54), and the limiting rod (555) is slidably connected to the inside of the limiting slot (542).

9. The resistor with adjustable resistance according to claim 8, characterized in that: The locking structure includes a rotating wheel (556), a rotating screw (557), a screw barrel (558) and a positioning seat (559), wherein the screw barrel (558) is connected to the lower end of the support plate (554), and the rotating screw (557) is connected to the interior of the screw barrel (558) through a thread, the rotating wheel (556) is fixed to the lower end of the rotating screw (557), and the positioning seat (559) is fixed to the upper end of the rotating screw (557).

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