CN201465845U

CN201465845U - Buttoned power supply switch

Info

Publication number: CN201465845U
Application number: CN2009201231328U
Authority: CN
Inventors: 高立新
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-29
Filing date: 2009-06-29
Publication date: 2010-05-12
Anticipated expiration: 2019-06-29

Abstract

The utility model provides a buttoned power supply switch only using two silver contacts, comprising a fixed support, a shell connected with the fixed support and a movable contact piece and a fixed contact piece which are arranged in the shell. The fixed support is internally provided with a button mechanism which comprises a large rack bar, a small rack bar and a returning spring; a gear ring is arranged on the lower end face of the large rack bar; a pawl matched with the gear ring is arranged outside the small rack bar; the gear ring of the large rack bar is pressed on the pawl of the small rack bar; the small rack bar is linked with the large rack bar; a guide groove for the pawl of the small rack bar to move vertically is arranged on the inner wall of the fixed support; a ratchet matched with the pawl is arranged at the tail end of the guide groove; and the returning spring is positioned between the small rack bar and the movable contact piece which is linked with the returning spring and the small rack bar. The utility model has the advantages that only two silver contacts are needed, the contact is excellent, the passing current is heavy and a button mechanism has simple structure and low cost; and the large rack bar, the small rack bar and the returning spring only generate vertically-lifting motion without malposition and shaking, and the button mechanism has stable and reliable action process.

Description

A kind of push button mains switch

Technical field

The utility model relates to a kind of mains switch, specifically is meant a kind of push button mains switch that uses two silver contacts.

Background technology

Mains switch is widely used, existing push button mains switch comprises: fixed mount, housing and movable contact spring and static contact, the movable contact spring middle part connects back-moving spring, respectively there is a silver contact at two ends, the static contact two ends are provided with the silver contact corresponding with movable contact spring, and when pressing the button, two silver contacts on two silver contacts on the movable contact spring and the static contact are fitted, the problem that this mains switch exists is: a switch needs four silver contacts, the easy loose contact of cost height and movable contact spring and static contact; Button mechanism complexity, stability are not high.

Summary of the invention

For solving the defective that above-mentioned prior art exists, the utility model provides a kind of push button mains switch that uses two silver contacts, and its cost is low, and contact is good, and stability is high.

The technical solution adopted in the utility model is: a kind of push button mains switch, comprise fixed mount, the housing that is connected with fixed mount, be installed in movable contact spring and static contact in the housing, be provided with button mechanism in the fixed mount, it is characterized in that: described button mechanism comprises big ratch, little ratch and back-moving spring, big ratch lower surface has gear ring, the little ratch outside has the ratchet that cooperates with gear ring, big ratch gear ring is pressed on the little ratch ratchet, little ratch and big ratch interlock, the fixed mount inwall is provided with the guide groove that moves up and down for little ratch ratchet, the guide groove end is provided with the ratchet with click-fit, back-moving spring is between little ratch and movable contact spring, and described movable contact spring and back-moving spring and little ratch link.

The described big ratch outside has the guiding fin that cooperates with fixed mount inwall guide groove.

Described big ratch has cavity, and the above part of described little ratch ratchet stretches in the big ratch cavity.

Described little ratch has the cavity volume of lower ending opening, and back-moving spring is placed in the cavity volume, fixedlys connected with the cavity volume top in the back-moving spring upper end, fixedlys connected with movable contact spring in the back-moving spring lower end.

The ratchet in the described little ratch outside equates with the guide groove number on the fixed mount inwall.

The beneficial effects of the utility model are: only need two silver contacts, contact is good, and the electric current that can pass through is big, and button mechanism is simple in structure, and cost is low; Big ratch is provided with the guiding fin that can slide up and down along the fixed mount guide groove, the above part of little ratch ratchet stretches in the big ratch cavity, little ratch has the cavity volume of lower ending opening, spring is placed in the cavity volume, fixedly connected with the cavity volume top in the spring upper end, fixedly connected with movable contact spring in the spring lower end, the ratchet in the little ratch outside has a plurality of, equate with the guide groove number on the fixed mount inwall, guarantee big ratch, little ratch and back-moving spring that the oscilaltion campaign only takes place and can not misplace to rock, knob mechanism action process stabilization is reliable.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the utility model embodiment;

Fig. 2 is an explosive view of the present utility model;

Fig. 3 is a cutaway view of the present utility model;

Fig. 4 is big ratch structural representation;

Fig. 5 is little ratch structural representation

Fig. 6 is the structural representation of fixed mount inner wall shape.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

Referring to Fig. 1, the push button mains switch, comprise fixed mount 1, the housing 2 that is connected with fixed mount 1, be installed in movable contact spring 3 and static contact 4 in the housing 2, housing 2 comprises body 21 and the side cover 22 that is used to install movable contact spring 3, static contact 4, and side cover 22 is fixedlyed connected with pin-and-hole by bearing pin with body 21.

Referring to Fig. 2 and Fig. 3, be provided with button mechanism in the fixed mount 1, button mechanism comprises big ratch 5, little ratch 6 and back-moving spring 7, big ratch 5 lower surfaces have gear ring 51, as shown in Figure 4, little ratch 6 outsides have the ratchet 61 that cooperates with gear ring 51, as shown in Figure 5, big ratch gear ring 51 is pressed on the little ratch ratchet 61, little ratch 5 and big ratch 6 interlocks.Referring to Fig. 6, fixed mount 1 inwall is provided with the guide groove 12 that moves up and down for little ratch ratchet, and guide groove 12 ends are provided with the ratchet 11 that cooperates with ratchet 61, movable contact spring 3 and back-moving spring 7 and little ratch 5 and 6 interlocks of big ratch.

Movable contact spring 3 and static contact 4 respectively are provided with a

silver contact

31 and 41, and the big ratch outside has the guiding fin 52 that cooperates with fixed mount inwall guide groove.For guaranteeing that big ratch 5 depresses the action of little ratch 6 and do not produce and rock, big ratch 5 has cavity, and the part of little ratch ratchet more than 61 stretches in big ratch 5 cavitys.Stable for guaranteeing that little ratch is depressed the action of back-moving spring, little ratch 6 has the cavity volume of lower ending opening, and back-moving spring 7 is placed in the cavity volume, fixedlys connected with little ratch cavity volume top in back-moving spring 7 upper ends, fixedlys connected with movable contact spring in back-moving spring 7 lower ends.Stable along the action that fixed mount inwall ratchet rotates for the ratchet that guarantees little ratch, the ratchet 61 in little ratch 6 outsides equates with guide groove 12 numbers on fixed mount 1 inwall.The top of big ratch 5 also is fixedly connected with press cover 8, feasible course of action comfortable feel of pressing knob down mechanism.

Course of action of the present utility model is as follows: press press cover 8, big ratch 5 presses down little ratch 6, little ratch ratchet 61 descends along guide groove 12, the ratchet of fixed mount inwall makes big relatively ratch 5 rotations of little ratch 6 one angle, snap in the recessed district 111 between two ratchets, next profile of tooth of big ratch gear ring 51 is pressed on this little ratch ratchet, back-moving spring 7 compressions, and movable contact spring silver contact 31 is fitted with static contact silver contact 41; Press press cover 8 once more, big ratch 5 presses down little ratch 6, little ratch ratchet 61 descends along guide groove 12, and the recessed district between two ratchets 111 breaks away from, ratchet behind recessed district 111 enters fixed mount inwall guide groove 12, little ratch 6 rises, and back-moving spring 7 resets, and movable contact spring silver contact 31 separates with static contact silver contact 41.

Claims

1. push button mains switch, comprise fixed mount (1), the housing that is connected with fixed mount (2), be installed in movable contact spring (3) and static contact (4) in the housing (2), fixed mount is provided with button mechanism in (1), it is characterized in that: described button mechanism comprises big ratch (5), little ratch (6) and back-moving spring (7), big ratch (5) lower surface has gear ring (51), little ratch (6) outside has the ratchet (61) that cooperates with gear ring, big ratch gear ring (51) is pressed on the little ratch ratchet (61), little ratch (6) and big ratch (5) interlock, fixed mount (1) inwall is provided with the guide groove (12) that moves up and down for little ratch ratchet (61), guide groove (12) end is provided with the ratchet (11) that cooperates with ratchet (61), back-moving spring (7) is positioned between little ratch (6) and the movable contact spring (3), described movable contact spring (6) and back-moving spring (7) and little ratch (6) interlock.

2. a kind of push button mains switch as claimed in claim 1 is characterized in that: described big ratch (5) outside has the guiding fin (52) that cooperates with fixed mount (1) inwall guide groove (12).

3. a kind of push button mains switch as claimed in claim 1 is characterized in that: described big ratch (5) has cavity, and the above part of described little ratch ratchet (61) stretches in big ratch (5) cavity.

4. as claim 1 or 2 or 3 described a kind of push button mains switches, it is characterized in that: described little ratch (6) has the cavity volume of lower ending opening, back-moving spring (7) is placed in the cavity volume, fixedlying connected with the cavity volume top in back-moving spring (7) upper end, fixedlys connected with movable contact spring (3) in back-moving spring (7) lower end.

5. as claim 1 or 2 or 3 described a kind of push button mains switches, it is characterized in that: the ratchet (51) in the described little ratch outside equates with guide groove (12) number on fixed mount (1) inwall.

6. as claim 1 or 2 or 3 described a kind of push button mains switches, it is characterized in that: described big ratch (5) upper fixed is connected with press cover (8).