Winding safety type resistor

Abstract

The utility model discloses a winding safety type resistor, which belongs to the field of resistors and comprises a base, the left end and the right end of the base are fixedly connected with power connection assemblies, a resistor adjusting assembly is arranged at the top end of each power connection assembly and located at the top end of the base, and a resistor body is mounted at the lower end of each resistor adjusting assembly. The resistor main body is matched with the base and the power connection assembly; the resistance adjusting assembly comprises a support, the support is installed at the top end of the base and fixedly connected with the base, a plurality of bolts distributed at equal intervals are arranged in the middle of the top end of the support, the bottom ends of the bolts penetrate through the top end of the support and extend into the support, the bolts are in threaded connection with the support, and the bottom ends of the bolts are rotationally connected with connecting sleeves. According to the technical scheme, the resistor is characterized in that a plurality of resistor bodies are independently connected with a power connection assembly through cooperation of all parts of a resistor adjusting assembly, so that the connection amount of the resistor bodies and the power connection assembly is conveniently controlled subsequently, and the resistance changing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of resistors, and more specifically to a wire-wound fuse-type resistor. Background Art

[0002] Chinese Patent Application No.: CN201921394212.7 provides a resistor. This solution controls the rotation of an insulating cylinder by rotating a rotating shaft, rotates a suitable resistor plate to contact a second contact, installs four groups of resistor plates with different resistance value ranges on the insulating cylinder, increases the adjustable range of the resistor, facilitates adjustment and replacement for use, and then drives the second contact to slide on the resistor plate by pushing a handle to facilitate adjustment of the resistor size and achieve fine adjustment of the resistor. The structure is simple, the operation is convenient, the applicable range of the resistor can be improved, and the practicability is strong. However, in subsequent use, it is not convenient to position and adjust the resistor, which is not conducive to meeting different usage requirements.

[0003] Therefore, a wire-wound fuse-type resistor is proposed for the above problems. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a wire-wound fuse-type resistor. By the cooperation between the parts of the resistor adjustment component, multiple resistor bodies are independently connected to the power connection component respectively, so as to facilitate subsequent control of the connection quantity between the resistor body and the power connection component and achieve the effect of variable resistance.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions:

[0006] The wire-wound fuse-type resistor includes a base. Both the left and right ends of the base are fixedly connected with power connection components. At the top of the base and above the power connection components, a resistor adjustment component is arranged. The lower end of the resistor adjustment component is installed with a resistor body, and the resistor bodies are adapted to the base and the power connection components. The resistor adjustment component includes a bracket, the bracket is installed at the top of the base and fixedly connected with the base. In the middle of the top of the bracket, a plurality of bolts arranged at equal intervals are provided. The bottom end of the bolt penetrates the top end of the bracket and extends into the interior of the bracket. The bolt is threadedly connected with the bracket. The bottom end of the bolt is rotatably connected with a connecting sleeve. The bottom end of the connecting sleeve is fixedly connected with a cross arm. A pair of vertically arranged blocks symmetrically distributed are slidably connected to the bottom end of the cross arm. A tension spring is fixedly connected to the inner wall of the vertically arranged block. The bottom end of the vertically arranged block is fixedly connected with a clamping cylinder.

[0007] Preferably, the clamping cylinder is located below the tension spring, and the clamping cylinder is adapted to the resistor body. At the bottom ends of the left and right sides of the cross arm, pressing plates are fixedly connected. The bottom end of the pressing plate is fixedly connected with an insulating convex block.

[0008] Preferably, a groove adapted to the connection end of the resistor body is provided at the bottom end of the insulating bump, and the insulating bump is located above the power connection assembly.

[0009] Preferably, a knob is fixedly connected to the top end of the bolt.

[0010] Preferably, the power connection assembly includes a wiring board, and a power connection plug is fixedly connected to one end of the wiring board away from the base. The power connection plug is electrically connected to the wiring board.

[0011] Preferably, a plurality of power connection slots arranged at equal intervals are provided at the top end of the wiring board, and the power connection slots are all adapted to the groove and the connection end of the resistor body.

[0012] Preferably, a power cord is arranged inside the wiring board, and the power cord is electrically connected to the power connection slots.

[0013] In summary, the utility model has the following beneficial effects:

[0014] (1) In this solution, through the cooperation between the various parts of the resistance adjustment assembly, a plurality of resistor bodies are independently connected to the power connection assembly respectively, so as to facilitate subsequent control of the connection quantity between the resistor body and the power connection assembly, achieving the effect of variable resistance. By using a plurality of tension springs to drive two vertical blocks to approach each other, the vertical blocks drive the clamping cylinder to clamp the resistor body, so as to limit the resistor body, facilitating subsequent rotation of the bolt to drive the cross arm to move up and down. The cross arm drives the pressure plate to move up and down, and the pressure plate drives the insulating bump and the two connection ends of the resistor body to move up and down. When moving down, the resistor body and the connection end of the resistor body are embedded in the power connection slot. At this time, when the power connection plug is energized, the power connection plug makes the power cord and the power connection slot energized simultaneously. Therefore, the resistor body forms a resistance in the entire circuit. By adjusting the positions of a plurality of bolts, the connection between a plurality of resistor bodies and the power connection assembly is controlled, achieving the effect of variable resistance. When different numbers of resistor bodies are connected to the power connection assembly, the overall circuit current is smaller. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram in this embodiment;

[0016] Figure 2 is the split structural schematic diagram in this embodiment;

[0017] Figure 3 is the structural schematic diagram of the bracket in this embodiment;

[0018] Figure 4 is the structural schematic diagram of the resistance adjustment assembly in this embodiment;

[0019] Figure 5 is the top-view structural schematic diagram of the power connection assembly in this embodiment.

[0020] In the figure, 1 is the base; 2 is the power connection component; 3 is the resistance adjustment component; 4 is the resistance body; 201 is the wiring board; 202 is the power connection plug; 301 is the bracket; 302 is the connecting sleeve; 303 is the bolt; 304 is the knob; 305 is the cross arm; 306 is the pressing plate; 307 is the insulating bump; 308 is the vertical block; 309 is the clamping cylinder; 310 is the tension spring. Specific embodiments

[0021] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] Among them, the same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.

[0023] Refer to Figures 1 - 5 As shown, for the winding insurance type resistor in a preferred embodiment of the present utility model, it includes a base 1. Power connection components 2 are fixedly connected to both the left and right ends of the base 1. At the top of the power connection component 2 and on the top of the base 1, there is a resistance adjustment component 3. The lower end of the resistance adjustment component 3 is installed with a resistance body 4. The resistance body 4 is adapted to both the base 1 and the power connection component 2; the resistance adjustment component 3 includes a bracket 301. The bracket 301 is installed on the top of the base 1 and is fixedly connected to the base 1. In the middle of the top of the bracket 301, there are multiple bolts 303 arranged at equal intervals. The bottom end of the bolt 303 penetrates through the top of the bracket 301 and extends into the interior of the bracket 301. The bolt 303 is threadedly connected to the bracket 301. The bottom end of the bolt 303 is rotatably connected to a connecting sleeve 302. The bottom end of the connecting sleeve 302 is fixedly connected to a cross arm 305. A pair of vertically arranged and symmetrically distributed vertical blocks 308 are slidably connected to the bottom end of the cross arm 305. A tension spring 310 is fixedly connected to the inner wall of the vertical block 308. The bottom end of the vertical block 308 is fixedly connected to a clamping cylinder 309.

[0024] The clamping cylinder 309 is located below the tension spring 310. The clamping cylinder 309 is adapted to the resistance body 4. Pressing plates 306 are fixedly connected to the bottom ends of both the left and right ends of the cross arm 305. Insulating bumps 307 are fixedly connected to the bottom ends of the pressing plates 306.

[0025] A groove adapted to the connection end of the resistance body 4 is formed at the bottom end of the insulating bump 307. The insulating bump 307 is located above the power connection component 2.

[0026] The top end of the bolt 303 is fixedly connected to a knob 304.

[0027] The power connection component 2 includes a wiring board 201. One end of the wiring board 201 away from the base 1 is fixedly connected with a power connection plug 202, and the power connection plug 202 is electrically connected to the wiring board 201.

[0028] A plurality of power connection slots are provided at the top of the wiring board 201 and are arranged at equal intervals. The power connection slots are all adapted to the grooves and the connection ends of the resistor body 4.

[0029] A power line is arranged inside the wiring board 201, and the power line is electrically connected to the power connection slots.

[0030] Specific implementation process: First, the resistance is adjusted through the resistance adjustment component 3. In the resistance adjustment component 3, turning the knob 304 drives the bolt 303 to rotate, causing the bolt 303 to move up and down on the bracket 301. The bottom end of the bolt 303 is rotatably connected to the connecting sleeve 302, and the connecting sleeve 302 is connected to the cross arm 305. When the bolt 303 moves up and down, it drives the cross arm 305 to move up and down. During the movement, the user can hold the cross arm 305 by hand to keep the cross arm 305 stable. Moreover, when installing the resistance body 4, the position of the cross arm 305 can be adjusted according to the installation environment, which is beneficial to better install the resistance body 4 on the insulating bump and the clamping cylinder. Among them, the tension spring on the inner wall of the upright block 308 causes the two upright blocks 308 to approach each other. The clamping cylinder 309 at the bottom end of the upright block 308 clamps the resistance body 4 under the action of the tension spring, playing a limiting role on the resistance body 4. When the cross arm 305 moves up and down, it will drive the clamping cylinder 309 and the upright block 308 to move together, thereby adjusting the clamping position of the clamping cylinder 309 on the resistance body 4. The bottom ends of the left and right sides of the cross arm 305 are fixedly connected to the pressing plates 306. The insulating bumps 307 at the bottom ends of the pressing plates 306 are located above the power connection component 2. The grooves at the bottom ends of the insulating bumps 307 are adapted to the connection ends of the resistance body 4. When the cross arm 305 moves downward, the pressing plate 306 drives the insulating bump 307 to move downward, so that the groove of the insulating bump 307 contacts the connection end of the resistance body 4. Secondly, the power connection component 2 realizes the connection with the external power supply and the power-on of the resistance body 4. One end of the wiring board 201 of the power connection component 2 is fixedly connected to the power connection plug 202. The power connection plug 202 is electrically connected to the wiring board 201 and is used to connect the external power supply. A plurality of equally spaced power connection slots are opened at the top end of the wiring board 201. The power connection slots are adapted to the grooves of the insulating bumps 307 and the connection ends of the resistance body 4. The power cord inside the wiring board 201 is electrically connected to the power connection slots. When the grooves of the insulating bumps 307 and the connection ends of the resistance body 4 are inserted into the power connection slots, the power connection plug 202 is powered on, causing the power cord and the power connection slots to be powered on simultaneously. At this time, the resistance body 4 forms a resistance in the entire circuit. By adjusting the positions of a plurality of bolts 303, the connection quantity between a plurality of resistance bodies 4 and the power connection component 2 can be controlled to achieve the effect of variable resistance. When different numbers of resistance bodies 4 are connected to the power connection component 2, the resistance value in the overall circuit will change. Connecting multiple resistors in series can increase the total resistance. In a series circuit, the total resistance is equal to the sum of each resistance. For example, if there are resistors R1, R2, and R3 connected in series, then the total resistance R total = R1 + R2 + R3. Therefore, the total resistance value will increase. Under the understanding of Ohm's law (U = IR, where U is voltage, I is current, and R is resistance), when the voltage is constant, the resistance increases and the current will decrease, which can meet the subsequent usage requirements of different resistance values.

[0031] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. Wire-wound fuse-type resistor, characterized in that: It includes a base (1), both the left and right ends of the base (1) are fixedly connected with power connection components (2), at the top of the power connection components (2) and on the top of the base (1) is provided a resistance adjustment component (3), the lower end of the resistance adjustment component (3) is installed with a resistance body (4), and the resistance body (4) is adapted to the base (1) and the power connection components (2); The resistance adjustment component (3) includes a bracket (301), the bracket (301) is installed on the top of the base (1), the bracket (301) is fixedly connected with the base (1), in the middle of the top of the bracket (301) are provided a plurality of bolts (303) arranged at equal intervals, the bottom end of the bolt (303) penetrates through the top of the bracket (301) and extends into the interior of the bracket (301), the bolt (303) is threadedly connected with the bracket (301), the bottom end of the bolt (303) is rotatably connected with a connecting sleeve (302), the bottom end of the connecting sleeve (302) is fixedly connected with a cross arm (305), at the bottom of the cross arm (305) are slidably connected a pair of vertical blocks (308) distributed symmetrically, the inner wall of the vertical block (308) is fixedly connected with a tension spring (310), and the bottom end of the vertical block (308) is fixedly connected with a clamping cylinder (309).

2. The wire-wound fuse-type resistor according to claim 1, characterized in that: The clamping cylinder (309) is located below the tension spring (310), the clamping cylinder (309) is adapted to the resistance body (4), at the bottom ends of the left and right sides of the cross arm (305) are fixedly connected with pressing plates (306), and the bottom end of the pressing plate (306) is fixedly connected with insulating bumps (307).

3. The wire-wound fuse-type resistor according to claim 2, wherein: The bottom end of the insulating bump (307) is provided with a groove adapted to the connection end of the resistance body (4), and the insulating bump (307) is located above the power connection component (2).

4. The wire-wound insurance type resistor according to claim 1, wherein: The top end of the bolt (303) is fixedly connected with a knob (304).

5. The wire-wound fuse-type resistor according to claim 1, wherein: The power connection component (2) includes a wiring board (201), one end of the wiring board (201) away from the base (1) is fixedly connected with a power connection plug (202), and the power connection plug (202) is electrically connected with the wiring board (201).

6. The wire-wound insurance type resistor according to claim 5, characterized in that: On the top of the wiring board (201) are provided a plurality of power connection slots arranged at equal intervals, and the power connection slots are all adapted to the groove and the connection end of the resistance body (4).

7. The wire-wound insurance type resistor according to claim 6, characterized in that: Inside the wiring board (201) is provided a power line, and the power line is electrically connected with the power connection slots.

Images