Safety air switch

Abstract

The utility model discloses a safety type air switch, which belongs to the technical field of electrical equipment, and aims to solve the problems that an existing plate button is easy to break due to overlarge force when being closed and the air switch is easy to be accidentally touched and has potential safety hazards, the safety type air switch comprises an air switch body, and a boss is arranged at the front end of the air switch body. The front end of the air switch body is rotatably connected with a plurality of fixing bolts, a plate button is installed at the front end of the boss, two buffer mechanisms corresponding to the plate button are arranged at the position, close to the bottom, of the front end of the boss, the outer portion of the front end of the air switch body is detachably connected with a protective shell, and the two sides of the protective shell are each slidably connected with two clamping columns. According to the utility model, through cooperation of the buffer mechanism, the damping rod and the second spring, collision and impact on the plate button during automatic closing are buffered, the plate button is prevented from being broken and damaged due to collision, and the service life of the air switch is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment, and in particular relates to a safety air switch. Background Art

[0002] Air switch, also known as air circuit breaker, is a type of circuit breaker. It is a switch that will automatically disconnect as long as the current in the circuit exceeds the rated current. Air switch is a very important electrical appliance in low-voltage distribution network and electric traction system. It integrates control and multiple protection functions. In addition to contacting and disconnecting circuits, it can also protect circuits or electrical equipment from short circuits, severe overloads and undervoltages. It can also be used to start motors infrequently.

[0003] When the existing air switch automatically closes, the plate button will quickly collide with the boss on the air switch and snap shut. The plate button is subjected to huge force in a short period of time, so the plate button will easily break and be damaged, thus affecting the service life of the entire air switch. At the same time, the existing air switch lacks protective devices and is directly exposed to the external environment. It is easy for the switch to be accidentally touched by external force, posing a safety hazard.

[0004] Therefore, a safe air switch is needed to solve the problems in the prior art that the plate button is easily broken due to excessive force when closing and the air switch is easily touched by mistake, posing a safety hazard. Utility Model Content

[0005] The purpose of the utility model is to provide a safety air switch to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safety air switch, comprising an air switch body, a boss is provided at the front end of the air switch body, a plurality of fixing bolts are rotatably connected to the front end of the air switch body, a plate button is installed at the front end of the boss, and two buffer mechanisms corresponding to the plate button are provided near the bottom position of the front end of the boss, a protective shell is detachably connected to the outside of the front end of the air switch body, two clamping columns are slidably connected to both sides of the protective shell, a pull plate is fixedly connected to the outer side of every two corresponding clamping columns, a first spring is sleeved on the outer walls of the plurality of clamping columns, two clamping holes corresponding to the clamping columns are provided on both sides of the air switch body, an observation window is provided at the front end of the protective shell, a through groove is provided at the front end of the protective shell near the top position, and a prompt plate is rotatably connected to the inner wall of the through groove.

[0007] It should be noted in the scheme that the buffer mechanism includes a sleeve fixedly connected to the front end of the boss, a damping rod is installed at the front end of the sleeve, a second spring is sleeved on the outer wall of the damping rod, and a buffer column head is fixedly connected to the front end of the damping rod.

[0008] It is further worth noting that the plurality of second springs are all fixedly connected between the front end of the sleeve and the rear end of the buffer column head.

[0009] It should be further explained that the outer walls of the plurality of buffer studs are fixedly connected with rubber sleeves.

[0010] As a preferred embodiment, the protective shell includes a main body layer, the outer wall of the main body layer is fixedly connected to a reinforcing rib layer, the outer wall of the reinforcing rib layer is fixedly connected to a heat dissipation layer, and the outer wall of the heat dissipation layer is fixedly connected to a wear-resistant layer.

[0011] As a preferred implementation, the plurality of first springs are fixedly connected between the outer side of the protective shell and the inner side of the pull plate, and the inner sides of the plurality of clamping columns are arranged in a semicircular shape.

[0012] As a preferred implementation, the outer wall of the clamping column is tightly fitted with the inner wall of the clamping hole.

[0013] Compared with the prior art, the safety air switch provided by the utility model has at least the following beneficial effects:

[0014] (1) By setting a buffer mechanism, the damping rod and the second spring cooperate to buffer the collision impact received by the plate button when it is automatically closed, thereby avoiding the plate button from being broken or damaged due to the collision, and extending the service life of the air switch.

[0015] (2) The protective shell is provided to protect the air switch body. The pull plate is pulled outward to drive the clamping column to move outward, and then the protective shell is moved backward to cover the specified position of the outer wall of the air switch body. The pull plate is released, and the clamping column is driven to reset and insert into the inner wall of the clamping hole under the action of the first spring, so as to realize the detachable connection between the protective shell and the air switch body, provide comprehensive protection for the air switch body, avoid accidental contact with the switch by external force during use, and reduce the safety hazard of the device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a schematic diagram of the structure of the protective shell of the utility model from the first perspective;

[0018] Figure 3 This is a schematic diagram of the structure of the protective shell of the utility model from a second viewing angle;

[0019] Figure 4 This is a schematic diagram of the structure of the buffer mechanism of the utility model;

[0020] Figure 5 It is a cross-sectional view of the protective shell of the utility model.

[0021] In the figure: 1. air switch body; 2. boss; 3. fixing bolt; 4. plate button; 5. buffer mechanism; 501. pipe sleeve; 502. damping rod; 503. second spring; 504. buffer column head; 6. protective shell; 601. body layer; 602. reinforcing rib layer; 603. heat dissipation layer; 604. wear-resistant layer; 7. clamping column; 8. pull plate; 9. first spring; 10. clamping hole; 11. observation window; 12. through groove; 13. prompt plate. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with embodiments.

[0023] See also Figure 1-5 The utility model provides a safety air switch, including an air switch body 1, a boss 2 is arranged at the front end of the air switch body 1, a plurality of fixing bolts 3 are rotatably connected to the front end of the air switch body 1, a plate button 4 is installed at the front end of the boss 2, and two buffer mechanisms 5 corresponding to the plate button 4 are arranged near the bottom of the front end of the boss 2, a protective shell 6 is detachably connected to the outside of the front end of the air switch body 1, two clamping columns 7 are slidably connected to both sides of the protective shell 6, a pull plate 8 is fixedly connected to the outer sides of every two corresponding clamping columns 7, a first spring 9 is sleeved on the outer walls of the plurality of clamping columns 7, two clamping holes 10 corresponding to the clamping columns 7 are arranged on both sides of the air switch body 1, an observation window 11 is arranged at the front end of the protective shell 6, a through groove 12 is arranged near the top of the front end of the protective shell 6, and a prompt plate 13 is rotatably connected to the inner wall of the through groove 12.

[0024] Further as Figure 4 As shown, it is worth explaining in detail that the buffer mechanism 5 includes a sleeve 501 fixedly connected to the front end of the boss 2, a damping rod 502 is installed at the front end of the sleeve 501, a second spring 503 is sleeved on the outer wall of the damping rod 502, and a buffer column head 504 is fixedly connected to the front end of the damping rod 502. By setting the buffer mechanism 5, the collision impact received by the plate button 4 during automatic closing is buffered, thereby avoiding breakage and damage of the plate button 4 due to collision, and extending the service life of the air switch.

[0025] Further as Figure 4 As shown, it is worth explaining in detail that the plurality of second springs 503 are fixedly connected between the front end of the sleeve 501 and the rear end of the buffer column head 504, ensuring that the second spring 503 can cooperate with the damping rod 502 to buffer the impact received by the plate button 4.

[0026] Further as Figure 4As shown, it is worth explaining in detail that the outer walls of multiple buffer column heads 504 are fixedly connected with rubber sleeves, and the rubber sleeves are made of highly elastic material, which can effectively absorb and disperse energy under impact and vibration, reduce the impact force on the equipment, and further provide shock-absorbing protection for the plate button 4.

[0027] According to the above working process, it can be known that by setting the buffer mechanism 5, the damping rod 502 and the second spring 503 cooperate to buffer the collision impact received by the plate button 4 when it is automatically closed, avoiding the plate button 4 from being broken or damaged due to the collision, thereby extending the service life of the air switch.

[0028] Further as Figure 5 As shown, it is worth specifically explaining that the protective shell 6 includes a main body layer 601, the outer wall of the main body layer 601 is fixedly connected with a reinforcing rib layer 602, the outer wall of the reinforcing rib layer 602 is fixedly connected with a heat dissipation layer 603, the outer wall of the heat dissipation layer 603 is fixedly connected with a wear-resistant layer 604, the reinforcing rib layer 602 improves the overall strength of the protective shell 6 and extends its service life, the heat dissipation layer 603 can promptly take away the heat generated during the operation of the air switch body 1, and the wear-resistant layer 604 is made of polyurethane material, which has the advantages of excellent tensile strength, tear strength, impact resistance, wear resistance and weather resistance, thereby enhancing the wear resistance of the protective shell 6.

[0029] Further as Figure 2 and Figure 3 As shown, it is worth explaining in detail that multiple first springs 9 are fixedly connected between the outer side of the protective shell 6 and the inner side of the pull plate 8, and the inner sides of multiple clamping columns 7 are semicircularly arranged, ensuring that under the action of the first springs 9, the clamping columns 7 can slide flexibly on both sides of the protective shell 6. At the same time, the clamping columns 7 with a semicircular design can be inserted into the inner wall of the clamping hole 10 more smoothly.

[0030] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that the outer wall of the clamping column 7 is tightly fitted with the inner wall of the clamping hole 10, so that the clamping column 7 and the clamping hole 10 are more tightly engaged, thereby making the detachable connection between the protective shell 6 and the air switch body 1 more secure.

[0031] This solution has the following working process: in actual use, the air switch body 1 is firmly connected to the installation surface by multiple fixing bolts 3, and then the pull plate 8 is pulled outward to drive the clamping column 7 to move outward, and the protective shell 6 is covered backward at the specified position of the outer wall of the air switch body 1, and the pull plate 8 is loosened. Under the action of the first spring 9, the clamping column 7 is driven to reset and inserted into the inner wall of the clamping hole 10, so as to realize the detachable connection between the protective shell 6 and the air switch body 1, and provide comprehensive protection for the air switch body 1. When the current in the circuit exceeds the rated current, the plate button 4 automatically trips, and the second spring 503 and the damping rod 502 cooperate to cushion the collision impact received by the plate button 4 when it is automatically closed. The staff can display the working status of the air switch body 1 by rotating the prompt plate 13.

[0032] In summary: by setting up the buffer mechanism 5, the damping rod 502 and the second spring 503 cooperate to buffer the collision impact received by the plate button 4 when it is automatically closed, thereby avoiding breakage and damage of the plate button 4 due to collision, and extending the service life of the air switch; by setting up the protective shell 6, the air switch body 1 is protected to avoid accidental contact with the switch by external force during use, thereby reducing the safety hazards of the device.

Claims

1. A safety air switch, comprising an air switch body (1), characterized in that: The front end of the air switch body (1) is provided with a boss (2), the front end of the air switch body (1) is rotatably connected with a plurality of fixing bolts (3), the front end of the boss (2) is installed with a plate button (4), the front end of the boss (2) is provided with two buffer mechanisms (5) corresponding to the plate button (4) near the bottom, the front end of the air switch body (1) is detachably connected with a protective shell (6) on the outside, two clamping columns (7) are slidably connected to both sides of the protective shell (6), the outer sides of each two corresponding clamping columns (7) are fixedly connected with a pull plate (8), the outer walls of the plurality of clamping columns (7) are sleeved with a first spring (9), two clamping holes (10) corresponding to the clamping columns (7) are provided on both sides of the air switch body (1), an observation window (11) is provided at the front end of the protective shell (6), a through slot (12) is provided near the top of the front end of the protective shell (6), and a prompt plate (13) is rotatably connected to the inner wall of the through slot (12).

2. A safety air switch according to claim 1, characterized in that: The buffer mechanism (5) comprises a sleeve (501) fixedly connected to the front end of the boss (2); a damping rod (502) is installed at the front end of the sleeve (501); a second spring (503) is sleeved on the outer wall of the damping rod (502); and a buffer column head (504) is fixedly connected to the front end of the damping rod (502).

3. A safety air switch according to claim 2, characterized in that: The plurality of second springs (503) are all fixedly connected between the front end of the pipe sleeve (501) and the rear end of the buffer column head (504).

4. A safety air switch according to claim 2, characterized in that: The outer walls of the plurality of buffer column heads (504) are all fixedly connected with rubber sleeves.

5. A safety air switch according to claim 1, characterized in that: The protective shell (6) comprises a main body layer (601), the outer wall of the main body layer (601) is fixedly connected to a reinforcing rib layer (602), the outer wall of the reinforcing rib layer (602) is fixedly connected to a heat dissipation layer (603), and the outer wall of the heat dissipation layer (603) is fixedly connected to a wear-resistant layer (604).

6. A safety air switch according to claim 1, characterized in that: The plurality of first springs (9) are fixedly connected between the outer side of the protective shell (6) and the inner side of the pull plate (8), and the inner sides of the plurality of clamping columns (7) are arranged in a semicircular shape.

7. A safety air switch according to claim 1, characterized in that: The outer wall of the clamping column (7) is tightly fitted with the inner wall of the clamping hole (10).

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