Electrical primary safety knife switch

Abstract

The utility model provides an electrical primary safety knife switch, which relates to the field of knife switches, and comprises a mounting plate, an annular mounting shell is fixedly mounted in the middle of the mounting plate, a placement plate is arranged in the mounting shell, a through groove is formed in the surface of the mounting shell, the through groove is in swing connection with a swing rod, and the swing rod is in swing connection with the placement plate. The end, located in the installation shell, of the swing rod is hinged to the installation shell, a static contact is arranged in the installation shell, metal parts of the electrical primary safety knife switch and the knife switch are all arranged in the installation shell, and a baffle is arranged on the outer surface of the swing rod which drives the moving contact and the static contact to move mutually. The baffle plate can always cover the through groove, so that dust and other impurities entering the mounting shell can be reduced, the problem that heat dissipation is affected by impurity accumulation can be reduced, and generation of circuit faults caused by the impurities can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a knife switch technical field, concretely is a kind of electrical primary safety type knife switch. BACKGROUND

[0002] Knife switch is a kind of electrical switch, commonly used to control power supply or load in circuit, it is usually composed of a handle, a fixed contact point and a moving contact point, when handle is in open position, moving contact point is separated from fixed contact point, circuit is disconnected;When handle is in closed position, moving contact point is contacted with fixed contact point, circuit is closed, the name of knife switch is derived from the handle shape similar to blade, and there is similar to the feeling of "cutting" circuit in the operation process.

[0003] CN220171982U a safety type knife switch belongs to knife switch technical field, including base, terminal block, movable contact blade, ceramic strip, handle and clamping seat and upper cover, the upper surface middle part of base is installed with terminal block, terminal block is rotatably provided with movable contact blade, the top of movable contact blade is fixedly provided with ceramic strip, the upper surface center of ceramic strip is fixedly provided with handle, the upper surface left side of base is installed with clamping seat, the upper surface of base is fixedly provided with upper cover by bolt;The technical scheme is provided with upper cover, the upper cover is set to hollow semicylindrical shape, and the inner radius of upper cover is equal to the length of movable contact blade, so that in the process of driving movable contact blade along terminal block by handle and ceramic strip, movable contact blade is always inside upper cover, prevent movable contact blade from being exposed in air when closing or opening knife switch, operator will not contact movable contact blade, reach the effect of preventing electric shock, ensure the safety of operator.But the gap of knife switch swing part exists, and impurities can easily enter, thereby causing circuit failure. UTILITARY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a kind of electrical primary safety type knife switch, solve the problem that the gap of knife switch swing part exists in background art.

[0005] TECHNICAL SCHEME

[0006] To achieve the above object, the utility model is realized by the following technical scheme: a kind of electrical primary safety type knife switch, including installation plate, the middle part of installation plate is fixedly installed with annular installation shell, the inside of installation shell is provided with placement plate, the surface of installation shell is provided with through slot, the swing of through slot is connected with swing rod, one end of swing rod in the inside of installation shell is hinged with installation shell, the inside of installation shell is provided with static contact, the outer surface of swing rod in the inside of installation shell is fixedly installed with the dynamic contact of static contact, the outer surface of swing rod in the inside of installation shell is fixedly installed with the baffle covering through slot, swing rod uses insulating material.

[0007] Further, one side wall of the through slot is parallel to the mounting plate, and the other side wall of the through slot is perpendicular to the mounting plate.

[0008] Further, the inside of the mounting shell is provided with a limiting groove on both sides of the through slot, the limiting groove is slidably connected with a limiting ring, and the limiting ring is fixedly connected with the baffle.

[0009] Further, the static contact includes an elastic part in contact with the moving contact and a wire connecting part electrically connected with the elastic part, a threaded groove is formed on the outer surface of the wire connecting part, two nuts are threadedly connected with the outer surface of the threaded groove, and a through hole for the wire is formed between the two nuts.

[0010] Further, the moving contact includes two protrusions clamped with the two static contacts, and the two protrusions are fixedly connected through a connecting sleeve which is sleeved on the outer surface of the swing rod and fixedly installed through a screw.

[0011] Further, the mounting shell is threadedly connected with a cover plate away from the side where the wire enters, the mounting shell is provided with a hinge sleeve hingedly connected with the swing rod, and the hinge sleeve and the swing rod are hingedly connected through a pin shaft.

[0012] Further, the number of the swing rods is multiple, the multiple swing rods are equidistantly distributed, and one end of the multiple swing rods on the outer side of the mounting shell is fixedly connected through a handle.

[0013] The beneficial effects of the utility model lie in:

[0014] 1. The electrical primary safety type knife switch, the metal parts of the knife switch are arranged in the inside of the mounting shell, a baffle is arranged on the outer surface of the swing rod which drives the moving contact and the static contact to move relative to each other, the baffle can always cover the through slot, thereby the dust and other impurities can be reduced from entering the inside of the mounting shell, the problem that the impurities affect heat dissipation due to accumulation can be reduced, and the circuit failure caused by the impurities can be avoided.

[0015] 2. The electrical primary safety type knife switch, the static contact includes an elastic part in contact with the moving contact and a wire connecting part electrically connected with the elastic part, a threaded groove is formed on the outer surface of the wire connecting part, two nuts are threadedly connected with the outer surface of the threaded groove, and a through hole for the wire is formed between the two nuts, the wire is sleeved in the through hole, and the wire part is extruded by rotating the two nuts, thereby the wire can be installed and connected. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a mounting shell connection schematic view of the utility model;

[0018] Figure 3 It is the static contact connection schematic diagram of the utility model;

[0019] Figure 4 It is the baffle connection schematic diagram of the utility model;

[0020] Figure 5 It is the swing rod connection schematic diagram of the utility model.

[0021] Wherein, 1, mounting plate;2, mounting shell;3, placing plate;4, through slot;5, swing rod;6, static contact;7, dynamic contact;8, baffle;9, limiting groove;10, limiting ring;601, elastic part;602, connecting part;603, thread groove;604, nut;605, through hole;701, protrusion;702, connecting sleeve;11, hinged sleeve;12, pin shaft;13, handle;14, cover plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Referring to Figures 1-5 An electrical primary safety type knife switch, including mounting plate 1, the middle part of mounting plate 1 is fixedly installed with annular mounting shell 2, the inside of mounting shell 2 is provided with placing plate 3, the surface of mounting shell 2 is provided with through slot 4, swing rod 5 is swing-connected to through slot 4, one end of swing rod 5 inside mounting shell 2 is hinged to mounting shell 2, the inside of mounting shell 2 is provided with static contact 6, the outer surface of swing rod 5 inside mounting shell 2 is fixedly installed with dynamic contact 7 connected with static contact 6, the outer surface of swing rod 5 inside mounting shell 2 is fixedly installed with baffle 8 covering through slot 4, swing rod 5 adopts insulating material, by such setting, the metal conductive part can be arranged in mounting shell 2, and through setting baffle 8, through slot 4 is covered, to avoid impurities entering the inside of mounting shell 2.

[0024] One side wall of through slot 4 is parallel to mounting plate 1, the other side wall of through slot 4 is perpendicular to mounting plate 1, by such setting, after the device is installed, swing rod 5 is perpendicular to ground to connect circuit, swing rod 5 is parallel to ground to disconnect circuit, to avoid being opposite to the operation mode of other existing knife switches due to inclined setting.

[0025] The interior of the mounting shell 2 is provided with a limiting groove 9 on both sides of the through groove 4, the limiting groove 9 is slidably connected with a limiting ring 10, the limiting ring 10 is fixedly connected with the baffle 8, through such arrangement, the two limiting rings 10 can be used for sealing, avoiding impurities entering the mounting shell 2.

[0026] The static contact 6 includes an elastic part 601 in contact with the dynamic contact 7 and a wire connecting part 602 electrically connected with the elastic part 601, a threaded groove 603 is formed on the outer surface of the wire connecting part 602, two nuts 604 are threadedly connected with the outer surface of the threaded groove 603, a through hole 605 for passing through the wire is arranged between the two nuts 604, the wire is sleeved in the through hole 605, and the wire part is extruded by rotating the two nuts 604, so that the wire can be installed and connected.

[0027] The dynamic contact 7 includes two protrusions 701 clamped with the two static contacts 6, the two protrusions 701 are fixedly connected through a connecting sleeve 702, the connecting sleeve 702 is sleeved on the outer surface of the swing rod 5 and is fixedly installed through a screw, through such arrangement, the dynamic contact 7 and the swing rod 5 can be separated, avoiding the swing rod 5 being electrified.

[0028] The mounting shell 2 is threadedly connected with a cover plate 14 away from the wire inlet side, the mounting shell 2 is provided with a hinged sleeve 11 hinged with the swing rod 5, the hinged sleeve 11 and the swing rod 5 are hinged through a pin shaft 12, through such arrangement, the wire can be conveniently installed, and the internal structure can be conveniently installed.

[0029] The number of the swing rods 5 is multiple, the multiple swing rods 5 are equidistantly distributed, and one end of the multiple swing rods 5 located outside the mounting shell 2 is fixedly connected through a handle 13, through such arrangement, the swing rod 5 can be conveniently driven to move.

[0030] In use, the metal parts of the knife switch are arranged in the interior of the mounting shell 2, and the baffle 8 is arranged on the outer surface of the swing rod 5 driving the dynamic contact 7 and the static contact 6 to move relative to each other, the baffle 8 can always cover the through groove 4, so that the dust and other impurities entering the interior of the mounting shell 2 can be reduced, the problem of impurity accumulation affecting heat dissipation can be reduced, and the generation of circuit failure caused by impurities can be avoided.

[0031] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0032] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An electrical primary safety knife switch comprising a mounting plate (1), characterised in that: The middle part of the mounting plate (1) is fixedly provided with an annular mounting shell (2), the inside of the mounting shell (2) is provided with a placing plate (3), the surface of the mounting shell (2) is provided with a through slot (4), the through slot (4) is swingly connected with a swing rod (5), one end of the swing rod (5) located in the inside of the mounting shell (2) is hinged with the mounting shell (2), the inside of the mounting shell (2) is provided with a static contact (6), the outer surface of the swing rod (5) located in the inside of the mounting shell (2) is fixedly provided with a moving contact (7) connected with the static contact (6), the outer surface of the swing rod (5) located in the inside of the mounting shell (2) is fixedly provided with a baffle (8) covering the through slot (4), and the swing rod (5) is made of insulating material.

2. An electrical primary safety knife switch according to claim 1, characterized in that: One side wall of the through slot (4) is parallel to the mounting plate (1), and the other side wall of the through slot (4) is perpendicular to the mounting plate (1).

3. An electrical primary safety knife switch according to claim 1, wherein: The inside of the mounting shell (2) is provided with a limiting groove (9) on both sides of the through slot (4), the inside of the limiting groove (9) is slidably connected with a limiting ring (10), and the limiting ring (10) is fixedly connected with the baffle (8).

4. An electrical primary safety knife switch according to any one of claims 1-3, characterized in that: The static contact (6) comprises an elastic part (601) in contact with the moving contact (7) and a wire connecting part (602) electrically connected with the elastic part (601), a threaded groove (603) is formed in the outer surface of the wire connecting part (602), two nuts (604) are threadedly connected with the outer surface of the threaded groove (603), and a wire through hole (605) is formed in the wire connecting part (602) between the two nuts (604).

5. An electrical primary safety knife switch according to claim 1, wherein: The moving contact (7) comprises a protrusion (701) clamped with the two static contacts (6), the two protrusions (701) are fixedly connected through a connecting sleeve (702), the connecting sleeve (702) is sleeved on the outer surface of the swing rod (5) and is fixedly installed through a screw.

6. An electrical primary safety knife switch according to claim 1, wherein: The side of the mounting shell (2) away from the wire inlet is threadedly connected with a cover plate (14), the inside of the mounting shell (2) is provided with a hinge sleeve (11) hinged with the swing rod (5), and the hinge sleeve (11) and the swing rod (5) are hinged through a pin shaft (12).

7. An electrical primary safety knife switch according to claim 1, wherein: The number of the swing rod (5) is multiple, the multiple swing rods (5) are equidistantly distributed, and one end of the multiple swing rods (5) located outside the mounting shell (2) is fixedly connected through a handle (13).

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