Compact resistor

Abstract

The utility model discloses a compact resistor, which relates to the technical field of resistors and comprises a base, the top of the base is fixedly connected with the bottom of an outer box, a support frame is fixedly arranged on one side of the outer box, a first protection mechanism is arranged on one side of the support frame, and the first protection mechanism comprises a driven rod. One end of the driven rod is slidably connected with a groove in one side of the sliding groove plate, and one end of the sliding groove plate is fixedly connected with one end of the power spring. The power shaft can be controlled to rotate through external power, the power shaft drives the crank to do circular motion, the crank pulls the sliding rod through the linkage rod, the sliding rod does linear motion under limiting of the supporting ring, the sliding rod further reciprocates rapidly under the acting force of the first reset spring and the second reset spring, and the dustproof net plate is in high-frequency contact through the sliding rod and the dustproof net plate. The dustproof net plate is driven to vibrate, a net opening of the dustproof net plate is prevented from being blocked, dust is prevented from contaminating the heat dissipation assembly, the working efficiency of the heat dissipation assembly is improved, and the service life of the heat dissipation assembly is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of resistors, in particular to a compact resistor. Background Art

[0002] Resistors are generally called resistors in daily life. It is a current limiting element. After the resistor is connected to the circuit, the resistance of the resistor is fixed. Generally, it has two pins. It can limit the current through the branch it is connected to. The resistor whose resistance cannot be changed is called a fixed resistor. The resistor whose resistance is variable is called a potentiometer or a variable resistor. The ideal resistor is linear, that is, the instantaneous current passing through the resistor is proportional to the applied instantaneous voltage.

[0003] After searching, a Chinese patent with publication number CN214796963U discloses a compact resistor, including a cylindrical shell and a resistor assembly installed in the shell, the resistor assembly includes a skeleton body and a resistor wire, the skeleton body includes a plurality of skeletons with different diameters, the skeletons are mutually sleeved into a multi-layer structure through connecting plates at both ends, each layer of the skeleton is spirally wound with a resistor wire, and the resistor wires of adjacent layers are connected in series through one end on the same side, so that the structure of the resistor assembly is compact. The beneficial effects of this application are: by sleeve-connecting multiple layers of skeletons with different diameters together, a larger resistor wire winding length is obtained in the radial direction through a smaller diameter parameter, thereby increasing the resistance value of the resistor. Compared with the existing resistors, under the condition of the same resistance value and power, the structure is more compact and more suitable for the use of large equipment and large machinery.

[0004] Although the above solution can have a more compact structure and is more suitable for use in large equipment and large machinery when the resistance power is the same, the resistor in the above patent does not have the function of shielding the heat dissipation component from dust. The heat dissipation component is easily contaminated with dust when idle, which affects the service life of the heat dissipation component. For this reason, we provide a compact resistor to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the resistor does not have the function of shielding the heat dissipation component from dust, the heat dissipation component is easily contaminated with dust when idle, which affects the service life of the heat dissipation component, and provides a compact resistor.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a compact resistor, comprising a base, the top of the base is fixedly connected to the bottom of the outer box, a support frame is fixedly arranged on one side of the outer box, a protective mechanism 1 is arranged on one side of the support frame, the protective mechanism 1 comprises a driven rod, one end of the driven rod is slidably connected to a groove on one side of a slide plate, one end of the slide plate is fixedly connected to one end of a power spring, the other end of the power spring is fixedly connected to one side of a support column, the support column is fixedly arranged at one end of the support frame, a protective mechanism 2 is arranged on one side of the inner wall of the outer box, and the protective mechanism 2 comprises a power shaft.

[0007] Furthermore, the slide plate is slidably arranged on one side of the outer surface of the support frame, and an inclined plate is fixedly arranged on one side of the inner wall of the support frame. One side of the inclined plate is slidably connected to one side of the barrier rod, and the other end of the barrier rod is rotationally connected to one end of the slide plate through a torsion spring, which is convenient for controlling the disconnection and engagement of the barrier rod and the support frame, and one end of the driven rod is rotationally connected to one side of the support frame.

[0008] Furthermore, a resistance wire body is fixedly arranged in the middle of the outer box, a heat dissipation component is fixedly arranged at one end of the outer box, and a vent is arranged at the other end of the outer box to improve the heat dissipation efficiency.

[0009] Furthermore, a dustproof screen is fixedly provided in the middle of the support frame, and a hole on one side of the dustproof screen is snap-fitted with one end of the blocking rod, so as to facilitate the disassembly and maintenance of the dustproof screen.

[0010] Furthermore, one end of the power shaft is fixedly connected to one end of the crank, the other end of the crank is rotatably connected to one end of the connecting rod through a pin shaft, the other end of the connecting rod is rotatably connected to one end of the sliding rod through a pin shaft, a partition is fixedly provided on the outer circumferential surface of the sliding rod, the power shaft is rotatably arranged on one side of the inner wall of the outer box, and the power shaft is controlled to rotate by external power.

[0011] Furthermore, one side of the partition is fixedly connected to one end of a return spring, and the other end of the return spring is fixedly connected to one side of a support ring, and the support ring is fixedly arranged on one side of the inner wall of the outer box, thereby driving the dustproof mesh plate to vibrate.

[0012] Furthermore, the outer surface of the slide rod is slidably connected to the inner wall of the support ring, and a second return spring is fixedly arranged on the other side of the partition to increase the frequency of the reciprocating motion of the slide rod.

[0013] Compared with the prior art, the compact resistor has the following advantages:

[0014] 1. The utility model sets the second protection mechanism and controls the rotation of the power shaft through external power. The power shaft drives the crank to move in a circle. The crank pulls the slide bar through the connecting rod. The slide bar moves linearly under the limit of the support ring. The slide bar moves back and forth quickly under the action of the return spring 1 and the return spring 2. The high-frequency contact between the slide bar and the dustproof mesh plate drives the dustproof mesh plate to vibrate, thereby avoiding clogging of the mesh port of the dustproof mesh plate and preventing dust from getting on the heat dissipation component, thereby improving the working efficiency and service life of the heat dissipation component.

[0015] 2. The utility model is provided with a protective mechanism 1. By manually pushing the dustproof mesh plate, the dustproof mesh plate drives the slide plate to move downward, and the driven rod moves from the top of the slide groove on one side of the slide groove plate to the bottom of the slide groove, thereby releasing the limit of the slide groove plate by the driven rod. The slide groove plate moves in the opposite direction under the action of the power spring, further driving the blocking rod to slide on the inclined plate, so that the blocking rod is disconnected from the dustproof mesh plate, thereby bringing the dustproof mesh plate out from the inside of the support frame, making it easy to replace and maintain the dustproof mesh plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic cross-sectional diagram of the three-dimensional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the housing of the utility model;

[0019] Figure 4 This is a schematic diagram of the connection of the dustproof screen plate of the utility model;

[0020] Figure 5 This is a connection diagram of the protection mechanism of the utility model;

[0021] Figure 6 This is a schematic diagram of the second connection of the protection mechanism of the utility model.

[0022] In the figure:

[0023] 1. Base; 2. Outer box; 3. Support frame;

[0024] 4. Protection mechanism 1; 41. Follower rod; 42. Slide plate; 43. Stop rod; 44. Power spring; 45. Support column; 46. Inclined plate;

[0025] 5. Dustproof screen; 6. Heat dissipation component; 7. Resistance wire body;

[0026] 8. Protection mechanism 2; 81. Power shaft; 82. Crank; 83. Link rod; 84. Sliding rod; 85. Partition plate; 86. Return spring 1; 87. Return spring 2;

[0027] 9. Support ring. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0029] See also Figure 1 A compact resistor comprises a base 1, the top of the base 1 is fixedly connected to the bottom of the outer box 2, and plays a supporting role for the outer box 2. A resistor wire body 7 is fixedly arranged in the middle of the outer box 2, a heat dissipation component 6 is fixedly arranged at one end of the outer box 2, and a vent is arranged at the other end of the outer box 2 to improve the ventilation and heat dissipation efficiency. A support frame 3 is fixedly arranged on one side of the outer box 2, and a dustproof mesh plate 5 is fixedly arranged in the middle of the support frame 3. Through the setting of the dustproof mesh plate 5, dust is prevented from being contaminated on the heat dissipation component 6, thereby improving the service life of the heat dissipation component 6. The holes on one side of the dustproof mesh plate 5 are clamped with one end of the blocking rod 43, and a protective mechanism 4 is arranged on one side of the support frame 3 to facilitate the disassembly and maintenance of the dustproof mesh plate 5. The protective mechanism 4 comprises a driven rod 41, one end of the driven rod 41 is slidably connected to the groove on one side of the slide slot plate 42, and the driven rod 41 is rotatably arranged on one side of the support frame 3 to limit the slide slot plate 42.

[0030] See also Figure 4 and Figure 5 The cam 46 is provided with a plurality of springs 46a and 47b, and the springs 46b are provided with a plurality of springs 46b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b, 47b

[0031] See also Figure 6The other end of the crank 82 is rotatably connected to one end of the connecting rod 83 through a pin shaft, and the other end of the connecting rod 83 is rotatably connected to one end of the sliding rod 84 through a pin shaft, driving the sliding rod 84 to move in the horizontal direction. The outer surface of the sliding rod 84 is slidably connected to the inner wall of the support ring 9 to prevent the sliding rod 84 from deflecting. A return spring 87 is fixedly provided on the other side of the partition 85, and a partition 85 is fixedly provided on the outer circumferential surface of the sliding rod 84 to increase the frequency of the reciprocating motion of the sliding rod 84. One side of the partition 85 is fixedly connected to one end of the return spring 86, and the other end of the return spring 86 is fixedly connected to one side of the support ring 9. The support ring 9 is fixedly provided on one side of the inner wall of the outer box 2, thereby driving the dustproof mesh plate 5 to vibrate and preventing dust from clogging the mesh port of the dustproof mesh plate 5.

[0032] Working principle: When in use, the power shaft 81 is controlled to rotate by external power, and the power shaft 81 drives the crank 82 to move in a circle. The crank 82 pulls the slide bar 84 through the connecting rod 83, and the slide bar 84 moves linearly under the limit of the support ring 9. Further, the slide bar 84 moves back and forth quickly under the action of the return spring 1 86 and the return spring 2 87. The high-frequency contact between the slide bar 84 and the dustproof mesh plate 5 is realized to drive the dustproof mesh plate 5 to vibrate, avoid clogging of the mesh port of the dustproof mesh plate 5, and prevent dust from being contaminated on the heat dissipation component 6, thereby improving the working efficiency of the heat dissipation component 6. In order to improve the efficiency and service life, when the dustproof mesh plate 5 needs to be disassembled, the dustproof mesh plate 5 is manually pushed, and the dustproof mesh plate 5 drives the slide plate 42 to move downward, and the driven rod 41 moves from the top of the slide groove on one side of the slide groove of the slide groove plate 42 to the bottom of the slide groove, thereby releasing the limit of the driven rod 41 on the slide groove plate 42, and the slide groove plate 42 moves in the opposite direction under the action of the power spring 44, further driving the blocking rod 43 to slide on the inclined plate 46, so that the blocking rod 43 is disconnected from the dustproof mesh plate 5, thereby taking the dustproof mesh plate 5 out from the inside of the support frame 3, which is convenient for replacing and maintaining the dustproof mesh plate 5.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A compact resistor, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to the bottom of the outer box (2); a support frame (3) is fixedly arranged on one side of the outer box (2); a protective mechanism (4) is arranged on one side of the support frame (3); the protective mechanism (4) comprises a driven rod (41); one end of the driven rod (41) is slidably connected to a groove on one side of a slide plate (42); one end of the slide plate (42) is fixedly connected to one end of a power spring (44); the other end of the power spring (44) is fixedly connected to one side of a support column (45); the support column (45) is fixedly arranged on one end of the support frame (3); a protective mechanism (8) is arranged on one side of the inner wall of the outer box (2); the protective mechanism (8) comprises a power shaft (81).

2. A compact resistor according to claim 1, characterized in that: The slide plate (42) is slidably arranged on one side of the outer surface of the support frame (3), and an inclined plate (46) is fixedly arranged on one side of the inner wall of the support frame (3). One side of the inclined plate (46) is slidably connected to one side of the blocking rod (43), and the other end of the blocking rod (43) is rotatably connected to one end of the slide plate (42) through a torsion spring.

3. A compact resistor according to claim 1, characterized in that: A resistance wire body (7) is fixedly arranged in the middle of the outer box (2), a heat dissipation component (6) is fixedly arranged at one end of the outer box (2), and a ventilation opening is arranged at the other end of the outer box (2).

4. A compact resistor according to claim 1, characterized in that: A dustproof screen plate (5) is fixedly arranged in the middle of the support frame (3), and a hole on one side of the dustproof screen plate (5) is clamped with one end of the blocking rod (43).

5. A compact resistor according to claim 1, characterized in that: One end of the power shaft (81) is fixedly connected to one end of a crank (82), the other end of the crank (82) is rotatably connected to one end of a connecting rod (83) via a pin shaft, the other end of the connecting rod (83) is rotatably connected to one end of a sliding rod (84) via a pin shaft, and a partition plate (85) is fixedly provided on the outer circumferential surface of the sliding rod (84).

6. A compact resistor according to claim 5, characterized in that: One side of the partition (85) is fixedly connected to one end of a return spring (86), and the other end of the return spring (86) is fixedly connected to one side of a support ring (9), and the support ring (9) is fixedly arranged on one side of the inner wall of the outer box (2).

7. A compact resistor according to claim 5, characterized in that: The outer surface of the slide rod (84) is slidably connected to the inner wall of the support ring (9), and a second return spring (87) is fixedly arranged on the other side of the partition plate (85).

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