Resistor and processing technology thereof

Abstract

The invention relates to the field of resistor devices, in particular to a resistor and a processing technology thereof. The resistor comprises a graphite rod, a plurality of annular grooves are formed in the left part and the right part of the graphite rod, two door-shaped frames are arranged left and right, sliding columns are connected to the front end and the rear end of each door-shaped frame in a sliding mode, arc rods are fixed to the opposite ends of the two sliding columns, and the two arc rods are inserted into one of the annular grooves. The resistor machining process comprises the following steps: S1, prefabricating a part; machining a graphite rod; turning an annular groove, a square hole and a central hole; the metal parts are stamped or cut to form a door-shaped frame and an L-shaped frame, and a binding post is tapped; s2, assembling a conductive assembly: connecting an arc rod with a door-shaped frame through a sliding column and a spring, and aligning to a graphite rod ring groove to be inserted; the slip sheet is fixed with the round rod, inserted into a central hole of the graphite rod and connected with the spring and the L-shaped frame; s3, mounting a supporting structure: penetrating a square rod into a square hole of a graphite rod, and connecting the lower end with a round seat and a cross rod; the door-shaped frame is connected to the transverse rod in a sliding mode and fixed through bolts.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of resistor, more particularly to a resistor and its processing technology. BACKGROUND

[0002] In electronic circuits, resistors are key components for current regulation and voltage division. Graphite-based resistors are widely used in simple circuits and high-power scenarios due to their low cost and high temperature resistance. However, there are two major problems with existing graphite-based resistors in practical use. Firstly, the flexibility of resistance value adjustment is insufficient. Traditional graphite resistors are designed with fixed resistance values, which are determined by the length and cross-sectional area of the graphite rod. These values cannot be adjusted on-site according to circuit requirements. Some adjustable resistors change the length of the graphite rod connected by sliding contacts to adjust the resistance value, but the contact position between the contact and the graphite rod is easily affected by vibration and temperature changes, causing resistance value fluctuations and making it difficult to meet the stability requirements of precision circuits. Secondly, the connection stability between the graphite rod and the conductive metal parts is poor. SUMMARY

[0003] To overcome the shortcomings of the prior art, the present application provides a resistor and its processing technology, which can adjust the resistance size and ensure the stable connection between the graphite rod and the conductive metal parts.

[0004] A resistor includes a graphite rod, the left and right parts of the graphite rod are provided with a plurality of ring grooves, two door-shaped frames are arranged left and right, the front and rear ends of each door-shaped frame are slidingly connected with a sliding column, the opposite ends of the two sliding columns are fixed with an arc rod, and the two arc rods are inserted into one of the ring grooves.

[0005] The outer end of the sliding column is fixed with a stop pin one, the outer side of each arc rod is fixed with a compression spring one, and the outer end of the compression spring one is fixed on the corresponding door-shaped frame.

[0006] The outer side of the door-shaped frame is fixed with an L-shaped frame, and the outer end of the L-shaped frame is fixed with a wiring column.

[0007] The middle part of the graphite rod is provided with a vertical square hole, a square rod is inserted into the square hole, the lower end of the square rod is fixed with a circular seat, the left and right sides of the circular seat are fixed with a horizontal rod, the lower side of each door-shaped frame is fixed with a convex seat, the two convex seats are slidingly connected with the two horizontal rods respectively, a fastening bolt one is threadedly connected on the convex seat and presses on the horizontal rod, and the outer ends of the two horizontal rods are fixed with stop pins two.

[0008] The left and right sides of the graphite rod are provided with a center hole, the lower ends of the two sliding sheets are slidingly connected with the two L-shaped frames respectively, the upper ends of the two sliding sheets are fixed with a circular rod, and the two circular rods are inserted into the two center holes respectively.

[0009] The L-shaped frame is fixed with a tab, the tab is fixed with a compression spring two, the other end of the compression spring two is fixed on the outside of the sliding sheet.

[0010] The outer end of the terminal post is provided with a wire hole, the terminal post is threadedly connected with a fastening bolt two, the end of the fastening bolt two is inserted into the wire hole.

[0011] The lower side of the round seat is fixed with a threaded column, the middle part of the rotating sheet is inserted on the threaded column, the threaded column is threadedly connected with a nut, the nut is pressed on the lower side of the rotating sheet, the left and right ends of the lower side of the rotating sheet are both fixed with a hollow rod, the bottom frame is fixed with two solid rods, the two solid rods are both slidingly connected with the two hollow rods, the lower end of each hollow rod is threadedly connected with a fastening bolt three, the two fastening bolts three are respectively pressed on the two solid rods, the bottom frame is uniformly provided with a plurality of screw insertion holes.

[0012] Further comprising an outer cover, the outer cover covers the outside of the graphite rod and avoids the plurality of ring grooves, the upper middle part of the outer cover is provided with a sliding sleeve, the sliding sleeve is inserted on the upper part of the square rod, the sliding sleeve is threadedly connected with a fastening bolt four, the fastening bolt four is pressed on the square rod.

[0013] A resistor processing technology, comprising the following steps: S1: part prefabrication: graphite rod processing: turning ring groove, square hole and center hole; metal piece: punching or cutting out door-shaped frame, L-shaped frame, terminal post tapping; S2: conductive assembly assembly: arc rod and door-shaped frame are connected through sliding column and spring, and are inserted into the graphite rod ring groove in alignment; the sliding sheet is fixed with the round rod, is inserted into the graphite rod center hole, and is connected with the spring and the L-shaped frame; S3: support structure installation: the square rod is inserted into the graphite rod square hole, and the lower end is connected with the round seat and the horizontal rod; the door-shaped frame is slidingly connected on the horizontal rod and is fixed with a bolt; S4: base and outer cover assembly: the round seat is below the rotating sheet, the hollow rod and the bottom frame, and is locked after height adjustment; the outer cover is sleeved on the graphite rod, and is fixed on the square rod. BRIEF DESCRIPTION OF DRAWINGS

[0014] The application will be further described in detail below in combination with the drawings and specific implementation methods.

[0015] Figure 1 It is a structural diagram of a resistor Figure One ; Figure 2 It is a structural diagram of a resistor Figure Two ; Figure 3 It is a structural diagram of a resistor Figure Three ; Figure 4 It is a structural diagram of a graphite rod Figure One ; Figure 5 Structure diagram of graphite rod Figure Two ; Figure 6 Structure diagram of door-shaped frame and L-shaped frame Figure One ; Figure 7 Structure diagram of door-shaped frame and L-shaped frame Figure Two ; Figure 8 Structure diagram of round seat Figure One ; Figure 9 Structure diagram of round seat Figure Two ; Figure 10 Structure diagram of base frame Figure 11 Structure diagram of outer cover Figure One ; Figure 12 Structure diagram of outer cover Figure Two ; In the figure: graphite rod 101; square hole 102; ring groove 103; center hole 104; Door-shaped frame 201; convex seat 202; fastening bolt one 203; arc rod 204; sliding column 205; stop pin one 206; compression spring one 207; L-shaped frame 301; tab 302; wire hole 303; fastening bolt two 304; wiring column 305; compression spring two 306; round rod 307; sliding tab 308; Round seat 401; square rod 402; stop pin two 403; cross rod 404; nut 405; threaded column 406; Base frame 501; fastening bolt three 502; solid rod 503; hollow rod 504; rotating tab 505; Outer cover 601; sliding sleeve 602; fastening bolt four 603. DETAILED DESCRIPTION

[0016] As Figures 4-7 shown; As a resistor includes a graphite rod 101, the left and right parts of the graphite rod 101 are provided with a plurality of ring grooves 103, two door-shaped frames 201 are arranged left and right, the front and rear ends of each door-shaped frame 201 are slidably connected with a slide column 205, the opposite ends of the two slide columns 205 are fixed with an arc rod 204, and the two arc rods 204 are inserted into one of the ring grooves 103; the graphite rod 101 serves as a resistance body, and the plurality of ring grooves 103 on the left and right parts of the graphite rod 101 are used to change the length of the graphite rod 101 connected to the circuit. The two door-shaped frames 201 are inserted into different ring grooves 103 through the arc rods 204, the effective length of the graphite rod 101 between the two arc rods 204 can be adjusted, and the resistance value is changed. The slide column 205 is slidably connected with the door-shaped frame 201, which ensures that the arc rod 204 can be stably inserted into the ring groove 103 and realizes reliable contact with the graphite rod 101, providing a path for current conduction.

[0017] As shown in Figures 6-7 ; The outer end of the slide column 205 is fixed with a stop pin 206, the outer side of each arc rod 204 is fixed with a compression spring 207, the outer end of the compression spring 207 is fixed on the corresponding door-shaped frame 201, and the stop pin 206 can prevent the slide column 205 from slipping out of the door-shaped frame 201, ensuring the structural integrity. The compression spring 207 always exerts an inward elastic force on the arc rod 204, so that the arc rod 204 tightly fits the inner wall of the ring groove 103, avoiding loose contact due to vibration and other factors, ensuring stable conduction between the graphite rod 101 and the arc rod 204, and reducing contact resistance fluctuation.

[0018] As shown in Figures 6-7 ; The outer side of the door-shaped frame 201 is fixed with an L-shaped frame 301, the outer end of the L-shaped frame 301 is fixed with a wiring column 305, the L-shaped frame 301 serves to connect the door-shaped frame 201 and the wiring column 305, forming an intermediate path for current conduction. The wiring column 305 is used to externally connect the circuit wire, and the current conducted by the graphite rod 101 through the arc rod 204, the door-shaped frame 201 and the L-shaped frame 301 is introduced or led out of the circuit, realizing the electrical connection between the resistor and the external circuit.

[0019] As shown in Figures 4-9 ; The middle part of the graphite rod 101 is provided with a vertical square hole 102, the square rod 402 is inserted in the square hole 102, the lower end of the square rod 402 is fixedly provided with a circular seat 401, the left and right sides of the circular seat 401 are fixedly provided with horizontal rods 404, the lower sides of the two door-shaped frames 201 are fixedly provided with convex seats 202, the two convex seats 202 are slidingly connected to the two horizontal rods 404 respectively, the convex seat 202 is threadedly connected with a fastening bolt 203, the fastening bolt 203 is pressed on the horizontal rod 404, and the outer ends of the two horizontal rods 404 are fixedly provided with stop pins 403; the square rod 402 is inserted into the square hole 102 of the graphite rod 101, so that the vertical positioning of the graphite rod 101 is realized, and rotation of the graphite rod 101 is prevented. The circular seat 401 provides sliding support for the door-shaped frame 201 through the horizontal rod 404, the convex seat 202 is slidingly arranged on the horizontal rod 404, and the sliding of the convex seat 202 on the horizontal rod 404 can drive the door-shaped frame 201 and the arc rod 204 to move leftward and rightward, so that different ring grooves 103 are selected to adjust the resistance. After the fastening bolt 203 is tightened, the position of the convex seat 202 can be fixed, so that the arc rod 204 is stably arranged in the selected ring groove 103; and the stop pin 403 prevents the convex seat 202 from sliding off the end of the horizontal rod 404.

[0020] As shown in Figures 4-7 ; The left and right sides of the graphite rod 101 are provided with central holes 104, the lower ends of the two sliding sheets 308 are slidingly connected to the two L-shaped frames 301 respectively, the upper ends of the two sliding sheets 308 are fixedly provided with circular rods 307, and the two circular rods 307 are inserted into the two central holes 104 respectively; the circular rod 307 is inserted into the central hole 104 of the graphite rod 101, cooperates with the arc rod 204 to contact the graphite rod 101 from different positions, and further enhances the connection stability of the graphite rod 101 and the conductive component. The sliding sheet 308 is slidingly arranged on the L-shaped frame 301, can adapt to the leftward and rightward movement of the door-shaped frame 201, ensures that the circular rod 307 always cooperates with the central hole 104, assists in maintaining the position stability of the graphite rod 101, and reduces stress deformation of the graphite rod 101.

[0021] As shown in Figures 6-7 ; The L-shaped frame 301 is fixedly provided with a tab 302, the tab 302 is fixedly provided with a compression spring 306, and the other end of the compression spring 306 is fixed to the outer side of the sliding sheet 308; the compression spring 306 applies an inward elastic force to the sliding sheet 308, drives the circular rod 307 to be tightly inserted into the central hole 104, prevents a gap from being formed between the circular rod 307 and the central hole 104, simultaneously provides elastic buffering for the sliding sheet 308 when the door-shaped frame 201 moves, ensures that the circular rod 307 adjusts the position synchronously with the door-shaped frame 201, and maintains stable contact.

[0022] As shown in Figures 6-7 ; The outer end of the terminal post 305 is provided with a wire hole 303, a fastening bolt two 304 is screwed on the terminal post 305, and the end of the fastening bolt two 304 is inserted into the wire hole 303; the wire hole 303 is used for inserting an external wire, and the fastening bolt two 304 is tightened to press the wire in the wire hole 303, so that the wire is reliably connected with the terminal post 305, the poor contact caused by the loose wire is avoided, and the stability of the current conduction path is ensured.

[0023] As shown in Figures 8-10 ; The lower side of the circular seat 401 is fixed with a threaded column 406, the middle part of the rotating plate 505 is inserted on the threaded column 406, a nut 405 is screwed on the threaded column 406, the nut 405 is pressed on the lower side of the rotating plate 505, the left and right ends of the lower side of the rotating plate 505 are both fixed with a hollow rod 504, two solid rods 503 are fixed on the base frame 501, the two solid rods 503 are slidingly connected on the two hollow rods 504, the lower end of each hollow rod 504 is screwed with a fastening bolt three 502, the two fastening bolts three 502 are pressed on the two solid rods 503, and the base frame 501 is uniformly provided with a plurality of screw insertion holes; the threaded column 406 cooperates with the nut 405 to fix the angle of the rotating plate 505, so that the overall steering adjustment of the resistor is realized. The sliding cooperation of the hollow rod 504 and the solid rod 503 can adjust the height of the resistor, and the fastening bolt three 502 is used for locking the height position. The base frame 501 is fixed on the mounting surface through the screw insertion holes, so as to provide stable support for the whole resistor and ensure the position fixed during the working process.

[0024] As shown in Figures 11-12 ; The resistor further comprises an outer cover 601, the outer cover 601 covers the outside of the graphite rod 101 and avoids the plurality of ring grooves 103, the upper middle part of the outer cover 601 is provided with a sliding sleeve 602, the sliding sleeve 602 is inserted on the upper part of the square rod 402, a fastening bolt four 603 is screwed on the sliding sleeve 602, and the fastening bolt four 603 is pressed on the square rod 402; the outer cover 601 can block dust, impurities and the like from entering the surface of the graphite rod 101, protect the graphite rod 101 from being eroded by the external environment, and avoid accidental contact by personnel. The sliding sleeve 602 cooperates with the square rod 402 to realize the positioning of the outer cover 601, the fastening bolt four 603 can fix the position of the outer cover 601, and the outer cover 601 avoids the ring groove 103, so as not to affect the selection and contact of the arc rod 204 on the ring groove 103, and ensure that the resistance adjustment function is normally realized.

[0025] A resistor processing technology, comprising the following steps: S1: part prefabrication: graphite rod processing: turning ring groove, square hole and center hole; metal piece: punching or cutting door-shaped frame, L-shaped frame, terminal post tapping; S2: Assembling of the conductive assembly: the arc rod and the door-shaped frame are connected by the slide post and spring, and the graphite rod is inserted into the ring groove; the slide and the round rod are fixed and inserted into the graphite rod center hole, and the spring and the L-shaped frame are connected; S3: Installing of the support structure: the square rod is inserted into the graphite rod square hole, and the lower end is connected with the round seat and the horizontal rod; the door-shaped frame is slid on the horizontal rod and fixed by the bolt; S4: Assembling of the base and the cover: the round seat is installed below the hollow rod and the base, and is locked after the height is adjusted; the cover is installed outside the graphite rod and is fixed on the square rod.

Claims

1. A resistor comprising a graphite rod (101), characterized in that: The graphite rod (101) has multiple annular grooves (103) on its left and right sides. Two portal frames (201) are arranged on the left and right sides. Each portal frame (201) has a sliding column (205) slidably connected to its front and rear ends. The opposite ends of the two sliding columns (205) are fixed with arc rods (204). The two arc rods (204) are inserted into one of the annular grooves (103).

2. A resistor according to claim 1, characterized in that: The outer end of the sliding column (205) is fixed with a stop pin (206), and the outer side of each arc rod (204) is fixed with a compression spring (207), the outer end of the compression spring (207) is fixed to the corresponding portal frame (201).

3. A resistor according to claim 2, characterized in that: An L-shaped frame (301) is fixed to the outside of the gantry frame (201), and a terminal block (305) is fixed to the outer end of the L-shaped frame (301).

4. A resistor according to claim 3, characterized in that: The graphite rod (101) has a vertical square hole (102) in the middle. The square rod (402) is inserted into the square hole (102). The lower end of the square rod (402) is fixed with a round seat (401). The left and right sides of the round seat (401) are fixed with crossbars (404). The lower sides of the two portal frames (201) are fixed with protrusions (202). The two protrusions (202) are slidably connected to the two crossbars (404). The protrusions (202) are connected with fastening bolts (203) by threads. The fastening bolts (203) press on the crossbars (404). The outer ends of the two crossbars (404) are fixed with stop pins (403).

5. A resistor according to claim 4, characterized in that: The graphite rod (101) has a central hole (104) on both the left and right sides. The lower ends of the two sliders (308) are slidably connected to the two L-shaped frames (301). The upper ends of the two sliders (308) are fixed with round rods (307), and the two round rods (307) are inserted into the two central holes (104).

6. A resistor according to claim 5, characterized in that: A protrusion (302) is fixed on the L-shaped frame (301), and a compression spring (306) is fixed on the protrusion (302). The other end of the compression spring (306) is fixed on the outside of the slider (308).

7. A resistor according to claim 6, characterized in that: The outer end of the terminal block (305) is provided with a wire hole (303), and a fastening bolt (304) is threadedly connected to the terminal block (305). The end of the fastening bolt (304) is inserted into the wire hole (303).

8. A resistor according to claim 7, characterized in that: A threaded post (406) is fixed on the lower side of the round base (401). The middle part of the rotating plate (505) is inserted into the threaded post (406). A nut (405) is connected to the threaded post (406) by thread. The nut (405) presses on the lower side of the rotating plate (505). Hollow rods (504) are fixed at both ends of the lower side of the rotating plate (505). Two solid rods (503) are fixed on the base frame (501). The two solid rods (503) are slidably connected to the two hollow rods (504). The lower end of each hollow rod (504) is connected to a fastening bolt (502) by thread. The two fastening bolts (502) press on the two solid rods (503). Multiple screw holes are evenly distributed on the base frame (501).

9. A resistor according to claim 8, characterized in that: It also includes an outer cover (601), which covers the outside of the graphite rod (101) and avoids multiple annular grooves (103). A sliding sleeve (602) is provided in the middle of the upper side of the outer cover (601). The sliding sleeve (602) is inserted into the upper part of the square rod (402). A fastening bolt four (603) is threadedly connected to the sliding sleeve (602), and the fastening bolt four (603) presses on the square rod (402).

10. A resistor manufacturing process, characterized in that, Includes the following steps: S1: Part prefabrication: Graphite rod machining: turning annular grooves, square holes and center holes; Metal parts: stamping or cutting of door-shaped brackets and L-shaped brackets; tapping of terminal blocks; S2: Assembling conductive components: The arc rod and the portal frame are connected by a sliding column and a spring, and inserted into the annular groove of the graphite rod; the slider is fixed to the round rod, inserted into the center hole of the graphite rod, and connected to the spring and the L-shaped frame; S3: Support structure installation: The square rod is inserted into the square hole of the graphite rod, and the lower end is connected to the round seat and the crossbar; the portal frame slides on the crossbar and is fixed with bolts; S4: Base and outer cover assembly: Install the rotating plate, hollow rod and base frame under the round base, and lock them after adjusting the height; the outer cover is put on the graphite rod and fixed on the square rod.

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