CN201038342Y

CN201038342Y - Starting switch for power tool

Info

Publication number: CN201038342Y
Application number: CNU2006201268615U
Authority: CN
Inventors: 吴世清
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-27
Filing date: 2006-10-27
Publication date: 2008-03-19
Anticipated expiration: 2016-10-27

Abstract

The utility model relates to a start switch for electric tool which comprises a base(1), a cover board(2), a button(3), a push rod(4), a fixed contact(5), a moving contact(6), a lock knob component(7) and two pairs of input connection component and output connection component. The inner and the outer sides of the base(1) are respectively provided with an input connection component and an output connection component chambers which have a press sheet(8) and a conductance piece(9) connected directly or indirectly through the fixed contact(5) and the moving contact(6) with the input connection component. One side of the press sheet(8) is fixed along outer side. The free terminal of the other side is inclined to inner and elastically pressed at the conductance piece(9) to form a rapid connection mechanism. The rapid connection mechanism needs no tools in connection. As long as the lead inserts into the connection component chamber from outer to inner, the head of the lead will open the free terminal of the press sheet(8) and insert deep into the chamber. The free terminal of the press sheet(8) press the lead tightly on the conductance piece(9) to form good contact with anti-back function, convenience and reliability and is in particular suitable for the connection of rigid lead without regular disassembly.

Description

A kind of electric tool starting switch

Technical field

The utility model relates to a kind of electric tool starting switch.

Background technology

The structure of existing electronic starting switch generally includes pedestal, cover plate, fixed contact, moving contact, push rod, button, cage knob, in-out box and back-moving spring etc.Each is provided with a fixed contact every group of fixed contact two ends, the fixed contact of two groups of fixed contacts is fixed in the pedestal inner chamber relatively, one on the other, moving contact is fixed on the push rod and is between two groups of fixed contacts, and the top and bottom, two ends are provided with and are equipped with moving contact, forms doube bridge formula structure with fixed contact.In-out box comprises the binding post that has jack, compresses screw, being electrically connected between binding post and moving contact or the fixed contact generally all leans on screw that they are tightly forced together, assemble cumbersome, in-out box also is that pressured tight screw compresses with being connected of electric tool inside and power line, and is more loaded down with trivial details; In addition, what adopt being connected of pedestal and cover plate is that a plurality of blind holes are set on pedestal, the relevant position is provided with the pin with the blind hole interference fit on the cover plate, and pin inserts in the blind hole pedestal is connected with cover plate, if but the north use in the winter time of the switch of this connected mode, owing to the reason of expanding with heat and contract with cold, pin fluffed with cooperating of blind hole, was very easy to cause cover plate to come off, and the switch inner body is scattered, so that electric tool can't operate as normal, even potential safety hazard is arranged.

Summary of the invention

The purpose of this utility model is to provide a kind of simple in structure, easy to assembly, safe and reliable, electric tool starting switch easily of pegging graft for overcoming the deficiencies in the prior art.

For achieving the above object, electric tool switch of the present utility model comprises pedestal, cover plate, button, push rod, fixed contact, moving contact, the cage knob assembly and the two pairs of input wires assemblies and output connection assembly, both sides are respectively equipped with input wires assembly and output connection assembly cavity volume in the pedestal, be provided with in the connector assembly cavity volume pressure-ray film and with the input wires assembly directly or through fixed contact, the electric-conductor that moving contact connects indirectly, described pressure-ray film one end is fixing in the outer part, the free end of other end slopes inwardly and flexibly is pressed in electric-conductor formation fast-wiring mechanism, like this when wiring, need not any instrument, as long as lead is inserted in the connector assembly cavity volume from outside to inside, the free end that the head of lead will back down pressure-ray film is inserted to the cavity volume depths, the free end of pressure-ray film tightly is pressed in lead and forms excellent contact on the electric-conductor, and the effect of retaining is arranged, convenient and reliable, for often the connection of the hard lead of dismounting is especially not suitable.

As further setting of the present utility model: two input wires assemblies respectively comprise binding post and the U-shaped reed that has jack, compresses screw, lead-in clamp is separately positioned in the cavity volume of moving contact rack and electric-conductor input one side, described U-shaped reed is inserted between electric-conductor and the binding post, rely on the elasticity of U-shaped reed itself, two ends can flexibly be pressed on electric-conductor and the binding post well and constitute electrical communication, have removed screw from.

Further be provided with as of the present utility model: the side is provided with the fixture block of a plurality of projectioies around on the described pedestal, the vertical buckle leg that is integrally formed with of described cover plate with the corresponding position of fixture block, the buckle leg is provided with the draw-in groove that matches, described draw-in groove and fixture block constitute snap device, just the influence that can not be expanded with heat and contract with cold.

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Description of drawings

Accompanying drawing 1 removes internal structure schematic perspective view behind the cover plate for the utility model specific embodiment;

Accompanying drawing 2 is the utility model specific embodiment STRUCTURE DECOMPOSITION schematic diagram;

Embodiment

As Fig. 1, shown in 2, the electric tool starting switch still comprises pedestal 1, cover plate 2, button 3, push rod 4, a fixed contact 5, a moving contact 6, the cage knob assembly 7 and the two pairs of input wires assemblies and output connection assembly, pedestal 1 is roughly rectangle, push rod 4 front ends are inserted to pedestal 1 inner chamber from the top perforate, push rod 4 both sides are provided with dividing plate and form the pusher slide chamber with cover plate 2, both sides outside the pusher slide chamber are respectively equipped with two pairs and are input wires assembly and the output connection assembly cavity volume that distributes up and down, input wires assembly and output connection assembly are separately positioned on separately in the cavity volume, the a pair of input wires assembly of its middle and lower part and output connection inter-module are provided with conductive connecting piece and directly are electrically connected as electric-conductor 9, the conductive connecting piece two ends are inserted into respectively in input wires assembly and the output connection assembly cavity volume, moving contact 6 is the bar shaped sheet, moving contact 16 is arranged on the end of moving contact 6, be provided with the Z-shaped moving contact rack 12 that conductive metal sheet is made in the pusher slide chamber, both sides, pusher slide chamber dividing plate is provided with grooving, moving contact rack 12 two ends are embedded in the grooving, wherein an end is inserted in the input wires assembly cavity volume on top, also being provided with the breach that matches with push rod 4 gaps on the moving contact rack 12 passes for push rod 4, moving contact 6 leans against the fulcrum that is made of breach on one side and becomes seesaw form close neighbour to be arranged on a side of push rod 4 in the pusher slide chamber, its fulcrum is arranged on the opposite side of moving contact 6 with respect to push rod 4, moving contact 6 is electrically connected by the fulcrum of moving contact rack 12 breach formation and the input wires assembly of another centering, fixed contact 5 passes dividing plate from an end and enters the pusher slide chamber, end fixed contact 17 is relative with moving contact 16, the other end is inserted in the output connection assembly cavity volume on top, push rod 4 end face are provided with the slide block storage chamber of indent to a side of moving contact 6, the slide block storage is inserted compression spring 18 and slide block 19 in the chamber successively, slide block 19 is resisted against on the moving contact 6 to Elastic Sliding under the effect of compression spring 18, the perforate of pusher slide chamber entrance point is provided with annular groove 21, be arranged with ring packing bowl 20 on the push rod 4, the edge of obturating cup 20 is embedded in groove 21.Two input wires assemblies respectively comprise binding post 10 and the U-shaped reed 11 that has jack, compresses screw, two U-shaped reeds 11 are inserted in respectively between moving contact rack 12 and binding post 10 and conductive connecting piece and the binding post 10, and the two ends of U-shaped reed 11 are flexibly pressed and constituted electrical communication thereon; Be provided with pressure-ray film 8 in the output connection assembly cavity volume, pressure-ray film 8 one ends are fixing in the outer part, and the free end of other end slopes inwardly and flexibly is pressed in fixed contact 5 and the conductive connecting piece that electric-conductor 9 promptly is inserted into respectively in the output connection assembly cavity volume up and down and constitutes fast-wiring mechanism; The side is provided with the fixture block 13 of a plurality of projectioies around on the pedestal 1, fixture block 13 can be right-angled triangle or be that the convex tendon on inclined-plane constitutes towards cover plate 2 one sides, cover plate 2 and the vertical buckle leg 14 that is integrally formed with in fixture block 13 corresponding positions, buckle leg 14 is provided with the draw-in groove 15 that matches, and described draw-in groove 15 constitutes snap device with fixture block 13.

Claims

1. electric tool starting switch, comprise pedestal (1), cover plate (2), button (3), push rod (4), fixed contact (5), moving contact (6), the cage knob assembly (7) and the two pairs of input wires assemblies and output connection assembly, the interior both sides of pedestal (1) are respectively equipped with input wires assembly and output connection assembly cavity volume, it is characterized in that: be provided with in the described connector assembly cavity volume pressure-ray film (8) and with the input wires assembly directly or through fixed contact (5), the electric-conductor (9) that moving contact (6) connects indirectly, described pressure-ray film (8) one ends are fixing in the outer part, and the free end of other end slopes inwardly and flexibly is pressed in electric-conductor (9) formation fast-wiring mechanism.

2. electric tool starting switch according to claim 1, it is characterized in that: described two input wires assemblies respectively comprise binding post (10) and the U-shaped reed (11) that has jack, compresses screw, lead-in clamp (10) is separately positioned in the cavity volume of moving contact rack (12) and electric-conductor (9) input one side, and described U-shaped reed (11) is inserted between electric-conductor (9) and the binding post (10) and constitutes electrical communication.

3. electric tool starting switch according to claim 1 and 2, it is characterized in that: the side was provided with the fixture block (13) of a plurality of projectioies around described pedestal (1) was gone up, described cover plate (2) and the vertical buckle leg (14) that is integrally formed with in the corresponding position of fixture block (13), buckle leg (14) is provided with the draw-in groove (15) that matches, and described draw-in groove (15) constitutes snap device with fixture block (13).