CN108538659B

CN108538659B - Reliable conversion structure of switch auxiliary contact

Info

Publication number: CN108538659B
Application number: CN201810277159.6A
Authority: CN
Inventors: 任山波; 贾超举; 钟允攀; 余艳艳
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2018-03-30
Filing date: 2018-03-30
Publication date: 2021-08-20
Anticipated expiration: 2038-03-30
Also published as: CN108538659A

Abstract

The invention discloses a reliable switching structure of a switch auxiliary contact, which comprises an operating mechanism driving piece and an auxiliary contact microswitch and is characterized in that: the driving distance provided by the operating mechanism driving piece for the auxiliary contact micro switch is larger than the actual distance required by the auxiliary contact micro switch for switching, and an elastic transmission piece is arranged between the operating mechanism driving piece and the auxiliary contact micro switch. The driving distance provided by the driving part of the operating mechanism for the auxiliary contact micro switch is greater than the actual distance required by the switching of the auxiliary contact micro switch, and the redundant distance is absorbed by the elastic transmission part. The whole mechanism can effectively avoid frequent switching of the auxiliary contacts, and the reliability of switching of the auxiliary contacts is ensured.

Description

Reliable conversion structure of switch auxiliary contact

Technical Field

The invention belongs to the technical field of low-voltage switches, and particularly relates to a reliable switching structure of a switch auxiliary contact, which ensures the reliability of a switching process.

Background

The low-voltage switch usually needs to be provided with an auxiliary contact as an electrical accessory of the switch, the on state and the off state of the switch can respond to the action of a switch operating mechanism through the normally open and normally closed conversion of the auxiliary contact, and the on state and the off state of the switch are indicated through the electrical signal.

In traditional auxiliary contact switching process, it is contacted with the driving piece on the switch operating device to pass through hard lever one end more, the micro-gap switch contact on the other end and the auxiliary contact, thereby detect the deciliter state of switch, generally, in the twinkling of an eye that the switch separating brake put in place, micro-gap switch on the auxiliary contact changes into normally closed contact from normally open contact, but traditional switch all has the condition of moving contact bounce-back when the separating brake, lead to micro-gap switch to change into normally closed contact from normally open contact, change into normally open contact from normally closed contact again, the circulation is switched, stop until the bounce-back, like this, the deciliter state signal through auxiliary contact collection switch just appears frequently switching, the signal of feeding back for the customer is extremely inaccurate, can cause electrical apparatus malfunction and great loss on the circuit.

The reason for this is that during the opening process of the switch, the cantilever driving piece of the operating mechanism drives the hard lever of the auxiliary contact, and the hard lever drives the micro switch on the contact of the contact to switch between the normally open state and the normally closed state. Because operating device drives the moving contact when breaking brake together, the moving contact motion has certain initial velocity and quality, when breaking brake targetting in place and touch spacing axle, the moving contact receives reaction force pulling operating device cantilever, toward one section distance of combined floodgate direction motion again, when breaking brake targetting in place just touch spacing axle, the contact is the normally closed contact by the normally open contact switching, nevertheless touch behind the spacing axle when toward one section distance of combined floodgate direction motion, the contact is switched into the normally open contact by the normally closed contact, lead to the contact to switch unreliably.

Chinese patent ZL200810244463.7 discloses a circuit breaker auxiliary switch, belonging to the technical field of low-voltage electrical apparatus accessories. The circuit breaker operating mechanism comprises a pair of shells matched with each other, a microswitch arranged in a shell cavity of the shell and a transmission part also arranged in the shell cavity of the shell, wherein a first contact arm for actuating a contact pin of the microswitch and a second contact arm which is extended out of the shell and used for actuating the circuit breaker operating mechanism are formed on the transmission part; the action reliability and the safety of the micro switch can be improved, and finally the reliability of the auxiliary switch is guaranteed. However, the auxiliary contact only considers the protection of the micro switch when the circuit breaker operating mechanism generates the overshoot phenomenon, and the technical problem that signals are inaccurate because the micro switch is converted from the normally open contact to the normally closed contact and then from the normally closed contact to the normally open contact for circular switching due to the rebound phenomenon of the moving contact is not solved.

Disclosure of Invention

The invention aims to solve the technical problems and provides a reliable switching structure of a switch auxiliary contact, wherein an elastic body or an indirect elastic body is arranged between an auxiliary contact micro-switch and an operating mechanism driving piece. The driving distance of the operating mechanism driving piece for the micro switch is larger than the actual distance required by the micro switch for switching, and the redundant distance is absorbed by the elastic body or the indirect elastic body. The contact part of the swing rod of the auxiliary contact and the mechanism driving cantilever is contacted with each other by adopting an elastic body or an indirect elastic body, so that the problem of the bounce of the auxiliary contact caused by the bounce of the moving contact is avoided.

In order to achieve the technical purpose, the invention designs a reliable switching structure of a switch auxiliary contact, which comprises an operating mechanism driving piece and an auxiliary contact micro switch, and is characterized in that: the driving distance provided by the operating mechanism driving piece for the auxiliary contact micro switch is larger than the actual distance required by the auxiliary contact micro switch for switching, and an elastic transmission piece is arranged between the operating mechanism driving piece and the auxiliary contact micro switch.

Further, elastic transmission spare formula as an organic whole utilizes the elastic material preparation, elastic transmission spare includes the rotor, rotor one side stretches out linkage arm one, linkage arm one can actuate auxiliary contact micro-gap switch, the rotor opposite side stretches out linkage arm two, linkage arm two can by the actuating mechanism driving piece actuates.

Furthermore, the elastic transmission part comprises a rotating shaft, a swing rod extends out of one side of the rotating shaft, the swing rod can actuate the auxiliary contact micro switch, an elastic body is fixedly arranged on the other side of the rotating shaft and can be actuated by the driving part of the operating mechanism, and the elastic body is made of elastic materials.

Furthermore, the elastic transmission part is arranged in the switch shell and can rotate, and the elastic transmission part is respectively linked with the driving part of the operating mechanism and the micro switch of the auxiliary contact in the rotating process.

Preferably, the elastic body is fixedly mounted on the rotating shaft by a rivet.

Further, the auxiliary contact micro switch is arranged on the switch shell.

Advantageous effects

According to the reliable switching structure of the switch auxiliary contact, the driving distance provided by the driving part of the operating mechanism for the auxiliary contact micro switch is larger than the actual distance required by the auxiliary contact micro switch for switching, and the redundant distance is absorbed by the elastic transmission part. Meanwhile, the contact parts of the auxiliary contacts and the driving part of the operating mechanism are contacted with each other by adopting an elastic body method, so that the problem of the bounce of the auxiliary contacts caused by the bounce of the moving contact is avoided; the auxiliary contacts are contacted with the micro switch by adopting an elastic body method, so that the problem of micro switch damage caused by overshoot is avoided. The whole mechanism can effectively avoid the frequent switching of the auxiliary contacts, ensure the switching reliability of the auxiliary contacts,

drawings

FIG. 1 is a schematic view showing the installation of an elastic transmission member in embodiment 1 of the present invention.

FIG. 2 is a schematic structural diagram of embodiment 1 of the present invention.

FIG. 3 is a schematic view of the structure of an elastic transmission member in embodiment 1 of the present invention.

Fig. 4 is a schematic diagram of the driving process of embodiment 1 of the present invention.

FIG. 5 is a schematic view showing the installation of the elastic transmission member in embodiment 2 of the present invention.

FIG. 6 is a schematic structural diagram of embodiment 2 of the present invention.

FIG. 7 is a schematic view of the structure of an elastic transmission member in embodiment 2 of the present invention.

Fig. 8 is a schematic diagram of the driving process of embodiment 2 of the present invention.

Fig. 9 is a logical schematic of an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

As shown in fig. 1, 2 and 4, the present embodiment provides a reliable switching structure for an auxiliary contact of a switch, which includes an operating mechanism driving member 1 and an auxiliary contact micro switch 2, wherein the auxiliary contact micro switch 2 is disposed on a switch housing 4. As shown in fig. 9, the driving distance provided by the operating mechanism driving member 1 to the auxiliary contact micro switch 2 is greater than the actual distance required by the auxiliary contact micro switch 2 for switching, and an elastic transmission member 3 is disposed between the operating mechanism driving member 1 and the auxiliary contact micro switch 2, so that the distance rebounded by the operating mechanism driving member 1 can be absorbed by the elastic transmission member 3. Elastic transmission member 3 dress can rotate in switch housing 4, elastic transmission member 3 rotate the in-process respectively with operating device driving piece 1 and auxiliary contact micro-gap switch 2 linkage.

As shown in fig. 3, the elastic transmission member 3 is an integral body and is made of an elastic material, the elastic transmission member 3 includes a rotating body 301, one side of the rotating body 301 extends out of a first linkage arm 301a, the first linkage arm 301a can actuate the auxiliary contact microswitch 2, the other side of the rotating body 301 extends out of a second linkage arm 301b, and the second linkage arm 301b can be actuated by the operating mechanism driving member 1.

As shown in fig. 4, in the process that the elastic transmission member 3 is driven by the operating mechanism driving member 1, when the opening is not completely in place, the auxiliary contact microswitch 2 is switched reliably, and at this time, when the opening is completely in place, only the process that the elastic transmission member 3 is compressed exists, even if the operating mechanism driving member 1 is changed back and forth clockwise and counterclockwise, because the elastic transmission member 3 has the same damping effect, the auxiliary contact microswitch 2 is kept in the switched state, and thus, the high reliability of the switching of the auxiliary contact is ensured.

Example 2

As shown in fig. 5 and 6, the elastic transmission member 3 in this embodiment includes a rotating shaft 302, a swing link 302a extends from one side of the rotating shaft 302, the swing link 302a can actuate the auxiliary contact microswitch 2, as shown in fig. 7, an elastic body 302b is fixed to the other side of the rotating shaft 302 by a rivet 302c and can be actuated by the operating mechanism driver 1, and the elastic body 302b is made of an elastic material. As shown in fig. 8, the whole mechanism works in the same manner as in embodiment 1, except that the elastic member in this embodiment is only the elastic body 302b which is linked with the operating mechanism driver 1.

The structures, proportions, sizes, and other elements shown in the drawings and described in the specification are included to provide the understanding and reading of the present disclosure, and are not intended to limit the scope of the present disclosure, so they are not essential to the technology, and any structural modification, proportion change, or size adjustment without affecting the function and purpose of the present disclosure should be within the scope of the present disclosure. In addition, the terms such as "upper", "lower", "left", "right", "middle", "clockwise" and "counterclockwise" used in the present specification are for clarity of description only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not limited by the technical contents of the substantial changes, but also considered to be the scope of the present invention.

Claims

1. The utility model provides a reliable transform structure of switch auxiliary contact, it includes operating device driving piece (1) and auxiliary contact micro-gap switch (2), its characterized in that: the driving distance provided by the operating mechanism driving piece (1) for the auxiliary contact micro switch (2) is greater than the actual distance required by the auxiliary contact micro switch (2) for switching, and an elastic transmission piece (3) is arranged between the operating mechanism driving piece (1) and the auxiliary contact micro switch (2);

the elastic transmission piece (3) is integrated and made of elastic materials, the elastic transmission piece (3) comprises a rotating body (301), one side of the rotating body (301) extends out of a first linkage arm (301a), the first linkage arm (301a) can actuate the auxiliary contact microswitch (2), the other side of the rotating body (301) extends out of a second linkage arm (301b), and the second linkage arm (301b) can be actuated by the operating mechanism driving piece (1);

elastic transmission spare (3) dress can rotate in switch casing (4), elastic transmission spare (3) rotate the in-process respectively with operating device driving piece (1) and auxiliary contact micro-gap switch (2) linkage.

2. A reliable switching structure of an auxiliary contact of a switch according to claim 1, wherein: the auxiliary contact micro switch (2) is arranged on the switch shell (4).

3. The utility model provides a reliable transform structure of switch auxiliary contact, it includes operating device driving piece (1) and auxiliary contact micro-gap switch (2), its characterized in that: the driving distance provided by the operating mechanism driving piece (1) for the auxiliary contact micro switch (2) is greater than the actual distance required by the auxiliary contact micro switch (2) for switching, and an elastic transmission piece (3) is arranged between the operating mechanism driving piece (1) and the auxiliary contact micro switch (2);

the elastic transmission part (3) comprises a rotating shaft (302), one side of the rotating shaft (302) extends out of a swing rod (302a), the swing rod (302a) can actuate the auxiliary contact microswitch (2), an elastic body (302b) is fixedly arranged on the other side of the rotating shaft (302) and can be actuated by an operating mechanism driving part (1), and the elastic body (302b) is made of elastic materials;

4. A reliable switching structure of an auxiliary contact of a switch according to claim 3, wherein: the elastic body (302b) is fixed to the rotary shaft (302) by a rivet (302 c).