Anti-falling knife switch

Abstract

The utility model relates to the technical field of switching devices, in particular to an anti-falling knife switch, which comprises a bottom plate, and an anti-falling component is arranged at the top of the bottom plate. The anti-falling assembly comprises an outgoing line static contact arranged at the right end of the top of the bottom plate, a module is arranged on the outer wall of one end of the outgoing line static contact, a fixing groove is formed in the other end of the module, a limiting block is arranged at the bottom end in the fixing groove, a moving contact blade is arranged at the upper end in the fixing groove, and a movable contact is arranged in the moving contact blade. The anti-falling knife switch is characterized in that a fixing groove is formed in the middle of the outer wall of the moving contact blade, a bolt is arranged between one end of the moving contact blade and the outer wall of the fixing groove, and a clamping block is arranged at the left end of the bottom plate. The telescopic rod stretches out and draws back to drive the anti-skid insulation pad at one end to clamp the outer wall of the moving contact blade, so that the moving contact blade is prevented from falling off, and the knife switch is prevented from falling off in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of switch electrical appliances, in particular to an anti-dropping knife switch. Background Art

[0002] A knife switch is a switching device with blade-shaped contacts. It is mainly used to isolate the power supply in the circuit, or to infrequently connect and disconnect loads below the rated current. When the knife switch is in the off position, it can be clearly observed to ensure the personal safety of the operator.

[0003] A safety knife switch is proposed in the patent with publication number CN204155816U, which includes a bottom plate and a protective cover. An upper clamping plate and a lower clamping plate are arranged on the bottom plate. The upper clamping plate is electrically connected to the upper wiring board, and the lower clamping plate is electrically connected to the lower wiring board. The upper end of the lower clamping plate is hinged to one end of the blade, and a handle is fixed to the other end of the blade. The blade rotates to contact the upper clamping plate to conduct the circuit. By adopting this structure, the safety of the knife switch can be increased while reducing the production cost, because in this way, only the upper clamping plate close to the handle position needs to be lengthened, and the length of the lower clamping plate far away from the handle position does not need to be increased. In this way, the distance from the handle to the wire connected to the upper wiring board is significantly increased, and the safety is also significantly improved. However, there are still the following problems in this patent:

[0004] The above knife switch is easy to fall off during use due to the long use time, which makes it inconvenient to operate and use the knife switch.

[0005] In view of the above problems, it is necessary to design an anti-dropping knife switch to overcome the above problems. Utility Model Content

[0006] The main purpose of the utility model is to provide an anti-dropping knife switch, which can effectively solve the problems in the background technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] An anti-dropping knife switch comprises a bottom plate, and an anti-dropping component is arranged on the top of the bottom plate;

[0009] The anti-falling component includes an outlet static contact arranged at the top right end of the base plate, a module is arranged on the outer wall of one end of the outlet static contact, a fixing groove is arranged on the other end of the module, a limiting block is arranged at the bottom end of the fixing groove, a moving contact blade is arranged at the inner upper end of the fixing groove, a bolt is arranged between one end of the moving contact blade and the outer wall of the fixing groove, a clamping block is arranged at the left end of the base plate, a clamping groove is arranged in the middle of the clamping block, a connecting tube is connected to the outer wall of the clamping block, a telescopic rod is arranged inside the connecting tube, a spring is arranged on the outer wall of the telescopic rod, limiting blocks are arranged on both sides of one end of the connecting tube, one end of the spring is connected to an anti-slip insulating pad, a limiting plate is arranged at one end of the moving contact blade, and a handle is arranged on the outer wall of the limiting plate.

[0010] As a preferred solution of the utility model, a protective bottom shell is embedded in the top outer wall of the bottom plate, a protective shell is arranged on the top of the protective bottom shell, a groove is provided on the right end outer wall of the protective bottom shell, and a card slot is provided in the middle of the protective shell.

[0011] As a preferred solution of the utility model, the grooves are arranged in three groups, the clamping slots are arranged in three groups, and the moving contact blades are arranged in three groups.

[0012] As a preferred solution of the utility model, the moving contact blade is slidably connected to the slot, the handle is fixedly connected to the limit plate, and the moving contact blade is fixedly connected to the limit plate.

[0013] As a preferred solution of the utility model, the outlet static contact is fixedly connected to the base plate, the module is fixedly connected to the base plate, the fixing groove is fixedly connected to the base plate, the limit block is fixedly connected to the fixing groove, the moving contact blade is rotatably connected to the fixing groove, and the clamping block is fixedly connected to the base plate.

[0014] As a preferred solution of the utility model, the connecting tube is fixedly connected to the clamping groove, the connecting tube is fixedly connected to the clamping groove, the telescopic rod is fixedly connected to the connecting tube, the spring is sleeved on the telescopic rod, the spring is fixedly connected to the anti-slip insulating pad, and the limit block is fixedly connected to the connecting tube.

[0015] Beneficial Effects

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] In the utility model, an anti-falling knife switch is designed, and anti-skid insulating pads are arranged on both sides of the clamping groove arranged on the outer wall of the middle part of the moving contact blade. The anti-skid insulating pad at one end is driven by the telescopic rod to clamp to the outer wall of the moving contact blade, which is convenient for preventing the moving contact blade from falling off, thereby preventing the knife switch from falling off during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the moving contact blade and the bottom plate of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the clamping groove and the anti-slip insulating pad of the utility model;

[0021] Figure 4 It is a structural schematic diagram of a connecting tube and a telescopic rod of the utility model.

[0022] In the figure: 1. bottom plate; 2. protective bottom shell; 3. protective shell; 4. groove; 5. anti-falling assembly; 501. card slot; 502. limit plate; 503. handle; 504. moving contact blade; 505. outlet static contact; 506. module; 507. fixing slot; 508. bolt; 509. limit block; 510. clamping block; 511. clamping slot; 512. connecting tube; 513. spring; 514. anti-slip insulating pad; 515. limit card block; 516. telescopic rod. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-4 As shown, an anti-drop knife switch comprises a bottom plate 1, and an anti-drop component 5 is arranged on the top of the bottom plate 1;

[0025] The anti-drop assembly 5 includes an outlet static contact 505 arranged at the right end of the top of the bottom plate 1, a module 506 is arranged on the outer wall of one end of the outlet static contact 505, a fixing groove 507 is arranged on the other end of the module 506, a limit block 509 is arranged on the bottom end of the fixing groove 507, a moving contact blade 504 is arranged on the upper end of the fixing groove 507, a bolt 508 is arranged between one end of the moving contact blade 504 and the outer wall of the fixing groove 507, and a clamping block 51 is arranged on the left end of the bottom plate 1. 0, a clamping groove 511 is provided in the middle of the clamping block 510, a connecting tube 512 is connected to the outer wall of the clamping block 510, a telescopic rod 516 is provided inside the connecting tube 512, a spring 513 is provided on the outer wall of the telescopic rod 516, limiting blocks 515 are provided on both sides of one end of the connecting tube 512, one end of the spring 513 is connected to an anti-slip insulating pad 514, a limiting plate 502 is provided at one end of the moving contact blade 504, and a handle 503 is provided on the outer wall of the limiting plate 502.

[0026] Please refer to the attached Figure 1 , Attachment Figure 2 and attached Figure 3 As shown, the top outer wall of the bottom plate 1 is embedded with a protective bottom shell 2, the top of the protective bottom shell 2 is provided with a protective shell 3, the outer wall of the right end of the protective bottom shell 2 is provided with a groove 4, the middle of the protective shell 3 is provided with a slot 501, the number of grooves 4 is set in three groups, the number of slots 501 is set in three groups, the number of moving contact blades 504 is set in three groups, the moving contact blades 504 are slidably connected with the slots 501, the handle 503 is fixedly connected with the limit plate 502, the moving contact blades 504 are fixedly connected with the limit plate 502, the outlet static contact 505 is fixedly connected with the bottom plate 1, and the module 506 is connected with the bottom plate 1 The fixing groove 507 and the bottom plate 1 are fixedly connected, the limiting block 509 and the fixing groove 507 are fixedly connected, the moving contact blade 504 and the fixing groove 507 are rotatably connected, the clamping block 510 and the bottom plate 1 are fixedly connected, the connecting tube 512 and the clamping groove 511 are fixedly connected, the connecting tube 512 and the clamping groove 511 are fixedly connected, the telescopic rod 516 and the connecting tube 512 are fixedly connected, the spring 513 and the telescopic rod 516 are sleeved, the spring 513 and the anti-slip insulating pad 514 are fixedly connected, and the limiting block 515 and the connecting tube 512 are fixedly connected;

[0027] Among them, the limiting block 515 has a limiting effect on the anti-slip insulating pad 514 to prevent the anti-slip insulating pad 514 from being stuck in the connecting tube 512, and the protective bottom shell 2 and the protective shell 3 arranged on the top of the bottom plate 1 are convenient for protecting the components of the knife switch. The moving contact blade 504 is slidably connected with the slot 501 to facilitate its protection.

[0028] Working process of the utility model: When the anti-falling knife switch designed by the present invention is used, the handle 503 is manually pulled, and the handle 503 drives the moving contact blade 504 on one side of the limit plate 502 to rotate through one end in the fixed groove 507, so that the moving contact blade 504 is embedded in the clamping groove 511, and the anti-slip insulating pads 514 on both sides are squeezed while being embedded, and are extended and retracted through the telescopic rod 516. Therefore, when the adjusted angle of the moving contact blade 504 is fixed, the spring 513 rebounds and the telescopic rod 516 extends, so that the anti-slip insulating pad 514 is clamped to the outer wall of the moving contact blade 504 to prevent it from falling off.

[0029] Although the 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 anti-drop knife switch, comprising a bottom plate (1), characterized in that: An anti-falling component (5) is provided on the top of the bottom plate (1); The anti-drop assembly (5) comprises an outlet static contact (505) arranged at the right end of the top of the base plate (1); a module (506) is arranged on the outer wall of one end of the outlet static contact (505); a fixing groove (507) is arranged on the other end of the module (506); a limit block (509) is arranged at the bottom end of the fixing groove (507); a moving contact blade (504) is arranged at the upper end of the fixing groove (507); a bolt (508) is arranged between one end of the moving contact blade (504) and the outer wall of the fixing groove (507); and a clamping block (510) is arranged at the left end of the base plate (1). A clamping groove (511) is provided in the middle of the clamping block (510), a connecting tube (512) is connected to the outer wall of the clamping block (510), a telescopic rod (516) is provided inside the connecting tube (512), a spring (513) is provided on the outer wall of the telescopic rod (516), limiting blocks (515) are provided on both sides of one end of the connecting tube (512), one end of the spring (513) is connected to an anti-slip insulating pad (514), a limiting plate (502) is provided at one end of the moving contact blade (504), and a handle (503) is provided on the outer wall of the limiting plate (502).

2. The anti-drop knife switch according to claim 1, characterized in that: A protective bottom shell (2) is embedded in the top outer wall of the bottom plate (1), a protective shell (3) is arranged on the top of the protective bottom shell (2), a groove (4) is provided on the right end outer wall of the protective bottom shell (2), and a slot (501) is provided in the middle of the protective shell (3).

3. The anti-drop knife switch according to claim 2, characterized in that: The grooves (4) are arranged in three groups, the clamping slots (501) are arranged in three groups, and the moving contact blades (504) are arranged in three groups.

4. The anti-drop knife switch according to claim 1, characterized in that: The movable contact blade (504) is slidably connected to the slot (501), the handle (503) is fixedly connected to the limit plate (502), and the movable contact blade (504) is fixedly connected to the limit plate (502).

5. The anti-drop knife switch according to claim 1, characterized in that: The outlet static contact (505) is fixedly connected to the base plate (1), the module (506) is fixedly connected to the base plate (1), the fixing groove (507) is fixedly connected to the base plate (1), the limit block (509) is fixedly connected to the fixing groove (507), the moving contact blade (504) is rotationally connected to the fixing groove (507), and the clamping block (510) is fixedly connected to the base plate (1).

6. The anti-drop knife switch according to claim 1, characterized in that: The connecting tube (512) is fixedly connected to the clamping groove (511), the connecting tube (512) is fixedly connected to the clamping groove (511), the telescopic rod (516) is fixedly connected to the connecting tube (512), the spring (513) is sleeved with the telescopic rod (516), the spring (513) is fixedly connected to the anti-slip insulating pad (514), and the limit block (515) is fixedly connected to the connecting tube (512).

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