Mistaken tripping prevention air switch
By introducing a heat sink and air suction device into the air switch to reduce the temperature and using a dustproof board to prevent dust from falling into it, the problem of false alarms and tripping of the air switch in high-temperature environments is solved, and more accurate detection is achieved.
Patent Information
- Application Number
- CN202420229426.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-01-31
AI Technical Summary
Existing air switches are prone to false alarms and tripping in high temperature environments, and dust falls into them, which will lead to inaccurate detection.
An anti-missive trip air switch is designed, and a heat sink and air suction device are used to reduce the temperature of the overload protection metal sheet, and to prevent dust from falling into it through the dustproof plate.
It effectively prevents false alarms and tripping caused by high temperatures, ensures the accuracy of detection, and avoids misjudgment caused by dust.
Smart Images
Figure CN222483241U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrical devices, in particular to an air switch to prevent false tripping. Background Art
[0002] An air switch is a circuit breaker used to protect circuits and electrical equipment from overloads, short circuits, and ground faults. It can automatically cut off the power supply to protect users and equipment from potential dangers. The working principle of an air switch is to detect the current flowing through the circuit. If the current exceeds the set threshold, it will automatically cut off the circuit to protect equipment and users from potential dangers. Air switches are commonly used in home, commercial, and industrial environments to protect circuits and equipment from overloads, short circuits, and ground faults.
[0003] The existing air switch is exposed to the outside after installation, which causes the external temperature to be too high. The internal anti-overload iron sheet will detect the external temperature, causing the anti-overload iron sheet to sound an alarm, resulting in a false alarm and tripping of the equipment. At the same time, when dust falls on the top of the anti-overload iron sheet, a gap will be created between the iron sheet and the line, resulting in inaccurate detection. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides an anti-false tripping air switch, which has the advantages of preventing false tripping and preventing dust, and solves the problems raised by the above-mentioned background technology.
[0005] The utility model provides the following technical solutions: an air switch to prevent false tripping, comprising a protective shell, the outer wall of the protective shell being fixedly connected with a heat sink and an air suction device respectively, the inner wall of the protective shell being slidably connected with a dustproof plate, the inner wall of the protective shell being fixedly connected with a switch device body, the top of the switch device body being fixedly connected with an overload protection metal sheet, the outer wall of the switch device body being rotatably connected with a switch gate, the top of the dustproof plate being provided with a fixed socket, the top of the inner wall of the protective shell being provided with a circular groove, the inner wall of the circular groove being fixedly provided with a spring, the inner wall of the circular groove being slidably connected with a fixing pin, and the outer wall of the fixing pin being fixedly connected with a pulling block.
[0006] As a preferred technical solution of the utility model, the air suction device includes a fixed box, the outer wall of the fixed box is provided with dustproof holes, the inner wall of the fixed box is fixedly connected to a support frame, the outer wall of the support frame is fixedly connected to a motor, and the outer edge of the power output shaft of the motor is fixedly connected to fan blades.
[0007] As a preferred technical solution of the utility model, the dustproof hole and the heat dissipation plate are located on both sides of the inner wall of the protective shell, and the position of the dustproof hole corresponds to that of the protective shell.
[0008] As a preferred technical solution of the utility model, convex blocks are provided on both sides of the dustproof plate, convex grooves are provided on both sides of the inner wall of the protective shell, and the convex blocks on the outer wall of the dustproof plate are located in the convex grooves on the inner wall of the protective shell, and the convex blocks on the outer wall of the dustproof plate are slidably connected with the convex grooves on the inner wall of the protective shell.
[0009] As a preferred technical solution of the utility model, the outer wall of the protective shell is provided with a square groove, and the pulling block is connected to the outer wall of the fixing pin through the square groove.
[0010] As a preferred technical solution of the utility model, the bottom diameter of the fixing pin is the same as the inner wall diameter of the fixing socket, and the fixing pin is located above the fixing socket.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. The anti-false tripping air switch starts the motor, which drives the fan blades to rotate. The fan blades suck the cold air behind the support frame into the interior of the fixed box, and discharge it into the interior of the protective shell through the dustproof hole, so that the cold air squeezes out the hot air outside the overload protection metal sheet and discharges it through the heat sink, so that the overload protection metal sheet will not make an erroneous judgment due to excessive heat in the external environment, causing the switch gate to trip.
[0013] 2. The air switch to prevent false tripping lifts the pulling block so that the pulling block drives the fixing pin to move upward. The fixing pin moves upward to compress the spring. At this time, the dustproof plate is inserted into the inner wall of the protective shell. When the fixing socket at the top of the dustproof plate moves to the bottom of the fixing pin, the spring rebounds. The fixing pin is pressed downward by the rebound of the spring, so that the fixing pin is inserted into the fixing socket, thereby fixing the dustproof plate. The top of the switch device body is covered by the dustproof plate, so that dust will not fall to the outside of the overload protection metal sheet and cause false detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the top cross-sectional structure of the box body of the utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the air suction device of the utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the dustproof plate of the utility model;
[0018] Figure 5 For this utility model Figure 4 Enlarged structural diagram at A in the middle.
[0019] In the figure: 1. protective shell; 2. heat sink; 3. dustproof plate; 4. switch device body; 5. overload protection metal sheet; 6. air suction device; 7. switch gate; 8. pulling block; 9. spring; 10. fixing pin; 11. fixing socket; 12. circular groove;
[0020] 601, fixing box; 602, supporting frame; 603, motor; 604, fan blade; 605, dustproof hole. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figure 1-5 A false tripping prevention air switch comprises a protective shell 1, the outer wall of the protective shell 1 is fixedly connected with a heat sink 2 and an air suction device 6, the inner wall of the protective shell 1 is slidably connected with a dustproof plate 3, the inner wall of the protective shell 1 is fixedly connected with a switch device body 4, the top of the switch device body 4 is fixedly connected with an overload protection metal sheet 5, the outer wall of the switch device body 4 is rotatably connected with a switch gate 7, a fixed socket 11 is provided on the top of the dustproof plate 3, a circular groove 12 is provided on the top of the inner wall of the protective shell 1, a spring 9 is fixedly provided on the inner wall of the circular groove 12, a fixing pin 10 is slidably connected to the inner wall of the circular groove 12, and a pulling block 8 is fixedly connected to the outer wall of the fixing pin 10. In the above structure, a square groove is provided on the outer wall of the protective shell 1 near the switch gate 7, and the size of the square groove allows the extended end of the switch gate 7 to rotate inside it.
[0023] In a preferred embodiment, the air suction device 6 includes a fixed box 601, the outer wall of the fixed box 601 is provided with a dustproof hole 605, the inner wall of the fixed box 601 is fixedly connected to a support frame 602, the outer wall of the support frame 602 is fixedly connected to a motor 603, and the outer edge of the power output shaft of the motor 603 is fixedly connected to a fan blade 604. In the above structure, by starting the motor 603, the motor 603 drives the fan blade 604 to rotate, and the fan blade 604 sucks the cold air behind the support frame 602 into the inner wall of the fixed box 601, and discharges it through the dustproof hole 605, so that the cold air enters one side of the dustproof hole 605.
[0024] In a preferred embodiment, the dustproof hole 605 and the heat sink 2 are located on both sides of the inner wall of the protective shell 1, and the dustproof hole 605 corresponds to the position of the protective shell 1. In the above structure, when cold air enters the interior of the protective shell 1, the heat in the protective shell 1 is squeezed, so that the hot air is discharged through the heat sink 2, so that the external temperature of the overload protection metal sheet 5 is in a low temperature state, so that the overload protection metal sheet 5 will not generate an error signal due to the excessively high ambient temperature, causing tripping.
[0025] In a preferred embodiment, convex blocks are provided on both sides of the dustproof plate 3, convex grooves are provided on both sides of the inner wall of the protective shell 1, and the convex blocks on the outer wall of the dustproof plate 3 are located in the convex grooves on the inner wall of the protective shell 1, and the convex blocks on the outer wall of the dustproof plate 3 are slidably connected with the convex grooves on the inner wall of the protective shell 1. In the above structure, the dustproof plate 3 is pulled to slide on the inner wall of the protective shell 1, and the convex blocks on the outer wall of the dustproof plate 3 are located inside the convex grooves on the inner wall of the protective shell 1, so that the dustproof plate 3 is limited, so that the dustproof plate 3 will not be separated from the protective shell 1 due to shaking.
[0026] In a preferred embodiment, a square groove is provided on the outer wall of the protective shell 1, and the pulling block 8 is connected to the outer wall of the fixing pin 10 through the square groove. In the above structure, the pulling block 8 is pulled upward so that the pulling block 8 slides in the square groove on the outer wall of the protective shell 1, so that the pulling block 8 drives the spring 9 to move upward.
[0027] In a preferred embodiment, the bottom diameter of the fixing pin 10 is the same as the inner wall diameter of the fixing socket 11, and the fixing pin 10 is located above the fixing socket 11. In the above structure, the fixing pin 10 is moved downward and inserted into the inner wall of the fixing socket 11, so that the fixing pin 10 fixes the fixing socket 11 and thus fixes the dustproof plate 3.
[0028] Working principle: when the switch device body 4 is working, the motor 603 is started, and the motor 603 drives the fan blade 604 to rotate. The fan blade 604 sucks the cold air behind the support frame 602 into the inner wall of the fixed box 601, and discharges it through the dustproof hole 605, so that the cold air enters the interior of the protective shell 1, so that the cold air squeezes the hot air outside the overload protection metal sheet 5, and discharges it through the heat sink 2, so that the overload protection metal sheet 5 will not make a wrong judgment due to the excessive heat of the environment, causing the switch gate 7 to trip. By lifting the pulling block 8, the pulling block 8 drives the fixing pin 10 to move upward, and the fixing pin 10 moves upward to compress the spring 9, so that the fixing pin 10 can be fixed. The fixed pin 10 enters into the circular groove 12. At this time, the dustproof plate 3 is inserted into the inner wall of the protective shell 1. The dustproof plate 3 is inserted into the inner wall of the protective shell 1 and pushed to the innermost side of the protective shell 1, so that the dustproof plate 3 drives the fixed socket 11 to move. When the fixed socket 11 moves to the bottom of the fixed pin 10, the spring 9 rebounds. The fixing pin 10 is squeezed downward by the rebound of the spring 9, so that the fixing pin 10 is inserted into the inner wall of the fixed socket 11, so that the fixed socket 11 is fixed, thereby fixing the dustproof plate 3. The top of the switch device body 4 is covered by the dustproof plate 3, so that dust will not fall to the outside of the overload protection metal sheet 5 and cause detection errors.
[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An air switch for preventing false tripping, comprising a protective shell (1), characterized in that: The outer wall of the protective shell (1) is fixedly connected with a heat sink (2) and an air suction device (6), respectively; the inner wall of the protective shell (1) is slidably connected with a dustproof plate (3); the inner wall of the protective shell (1) is fixedly connected with a switch device body (4); the top of the switch device body (4) is fixedly connected with an overload protection metal sheet (5); the outer wall of the switch device body (4) is rotatably connected with a switch gate (7); the top of the dustproof plate (3) is provided with a fixed socket (11); the top of the inner wall of the protective shell (1) is provided with a circular groove (12); the inner wall of the circular groove (12) is fixedly provided with a spring (9); the inner wall of the circular groove (12) is slidably connected with a fixing pin (10); the outer wall of the fixing pin (10) is fixedly connected with a pulling block (8).
2. The anti-false tripping air switch according to claim 1, characterized in that: The air suction device (6) comprises a fixed box (601), the outer wall of the fixed box (601) is provided with a dustproof hole (605), the inner wall of the fixed box (601) is fixedly connected to a support frame (602), the outer wall of the support frame (602) is fixedly connected to a motor (603), and the outer edge of the power output shaft of the motor (603) is fixedly connected to a fan blade (604).
3. The anti-false tripping air switch according to claim 2 is characterized in that: The dustproof hole (605) and the heat dissipation plate (2) are located on both sides of the inner wall of the protective shell (1), and the dustproof hole (605) corresponds to the position of the protective shell (1).
4. The anti-false tripping air switch according to claim 1, characterized in that: Convex blocks are provided on both sides of the dustproof plate (3), convex grooves are provided on both sides of the inner wall of the protective shell (1), and the convex blocks on the outer wall of the dustproof plate (3) are located in the convex grooves on the inner wall of the protective shell (1), and the convex blocks on the outer wall of the dustproof plate (3) are slidably connected to the convex grooves on the inner wall of the protective shell (1).
5. The anti-false tripping air switch according to claim 1, characterized in that: The outer wall of the protective shell (1) is provided with a square groove, and the pulling block (8) is connected to the outer wall of the fixing pin (10) through the square groove.
6. The anti-false tripping air switch according to claim 1, characterized in that: The bottom diameter of the fixing pin (10) is the same as the inner wall diameter of the fixing socket (11), and the fixing pin (10) is located above the fixing socket (11).