CN210110656U

CN210110656U - Combined auxiliary contact group for contactor

Info

Publication number: CN210110656U
Application number: CN201920951371.6U
Authority: CN
Inventors: 黄庆; 王婷婷; 刘纪超; 冯大成; 朱华
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-02-21
Anticipated expiration: 2029-06-21

Abstract

A modular auxiliary contact set for a contactor, comprising a casing (1), characterized in that: the contact support (2) is arranged on the shell (1) and can slide relative to the shell (1), and the contact support (2) can be arranged on the shell (1) and can realize the connection and disconnection of a direct-acting double-breakpoint contact system (A) and a microswitch contact system (B) in the process of sliding relative to the shell (1); the auxiliary contact group structure is provided with two contact forms of a direct-acting double-breakpoint contact and a fully-closed microswitch, the direct-acting double-breakpoint contact structure and the microswitch contact structure are integrated in one shell, signals of different levels can be synchronously switched on and synchronously controlled, and the reliability of the signals is improved.

Description

Combined auxiliary contact group for contactor

Technical Field

The utility model belongs to the technical field of the contactor, it is exactly to say specifically that relate to a supplementary contact group of combination formula for contactor.

Background

The contactor is characterized in that a magnetic field is generated by current flowing through a coil, so that a contact is closed, and effective power transmission is realized. The contactor is composed of electromagnetic system (moving iron core, static iron core, electromagnetic coil), contact system and arc-extinguishing device. When the electromagnetic coil of the contactor is electrified, a strong magnetic field is generated, so that the static iron core generates electromagnetic attraction to attract the movable iron core and drive the contact to act, and the contact is closed; when the coil is powered off, the electromagnetic attraction disappears, the movable iron core is released under the action of the counterforce spring, the contact is restored, and the contact is disconnected.

The auxiliary contact group of the contactor commonly used in the current market usually adopts a direct-acting double-breakpoint contact or a totally-closed microswitch. The direct-acting double-breakpoint contact form is applied to a signal control circuit with the self-locking or interlocking of a contactor electromagnetic system, the control of an intermediate relay and the indication of a signal lamp of more than 24V; the totally-enclosed microswitch is applied to a singlechip system and used for switching on or switching off low-voltage and low-current signals. If the same contactor needs to be connected with the two different signals at the same time, two auxiliary contact sets in different forms, namely a direct-acting double-breakpoint contact and a fully-closed microswitch, need to be installed, so that the redundancy of the auxiliary contact set externally connected with the contactor is caused, and the synchronism of the signals in different levels and the reliable connection of the signals cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a need put through the not enough technical problem of different rank control signal of control signal and signal synchronism to the auxiliary contact group of above-mentioned current contactor, a combination formula auxiliary contact group for contactor is provided, possess the auxiliary contact group structure of two kinds of contact forms of direct action type double break point contact and totally closed micro-gap switch simultaneously, with the integration of direct action type double break point contact structure and micro-gap switch contact structure in a casing, can put through and the different rank signal of synchro control in step, the reliability of signal has been improved.

Technical scheme

In order to achieve the technical purpose, the utility model provides a pair of a supplementary contact group of combination formula for contactor, it includes the casing, its characterized in that: the contact support is arranged on the shell and can slide relative to the shell, and the contact support can realize the connection and disconnection of a direct-acting double-breakpoint contact system and a microswitch contact system in the process of sliding relative to the shell;

the direct-acting double-breakpoint contact in the direct-acting double-breakpoint contact system and the microswitch triggering mechanism in the microswitch contact system are arranged on the contact support, and the contact support drives the direct-acting double-breakpoint contact and the microswitch triggering mechanism to be in contact with and separated from the corresponding double-breakpoint contact and the microswitch in the process of sliding on the shell relative to the shell, so that the direct-acting double-breakpoint contact system and the microswitch contact system are switched on and off.

Furthermore, the direct-acting type double-breakpoint contact comprises a bridge-shaped contact, the bridge-shaped contact is pressed on the upper groove wall I of the first mounting groove of the contact support by the upper end of a contact spring, the lower end of the contact spring is arranged on a spring seat, the spring seat is arranged on an internal groove of the shell, and the double-breakpoint contact is fixedly arranged on the shell and corresponds to the bridge-shaped contact.

Further, the micro-switch trigger mechanism comprises a spring, wherein the spring is arranged in an installation groove II on the contact support, one end of the spring abuts against an upper groove wall II of the installation groove II, the other end of the spring abuts against a push rod, the push rod is arranged on a groove hole at the bottom of the installation groove II and can slide in the groove hole, the micro-switch is arranged on the shell, and a swinging rod of the micro-switch corresponds to the push rod.

Further, the microswitch is connected with a circuit board, the circuit board is connected with a contact plate, and the circuit board and the contact plate are both arranged on the shell.

Further, the push rod is provided with a convex edge, when the push rod slides in the groove hole, the convex edge is limited by the hole wall of the groove hole, and the rod part of the push rod extends out of the groove hole and corresponds to the swinging rod of the microswitch.

Furthermore, the upper end of the spring is arranged on a protrusion of the upper groove wall II of the mounting groove II, and the lower end of the spring is arranged in a groove of the upper end face of the push rod.

Furthermore, the direct-acting double-breakpoint contact system and the micro-switch contact system can be freely combined into at least two groups.

Advantageous effects

The utility model provides a combination formula auxiliary contact group for contactor possesses the auxiliary contact group structure of two kinds of contact forms of direct action type double break point contact and totally closed micro-gap switch simultaneously, will the integration of direct action type double break point contact structure and micro-gap switch contact structure in a casing, can put through in step and the different rank signal of synchro control, improved the reliability of signal.

Drawings

Fig. 1a is a schematic structural diagram of an embodiment of the present invention.

Fig. 1b is a schematic structural diagram of the housing in the embodiment of the present invention.

Fig. 2a is a schematic structural diagram of a direct-acting double-break contact system according to an embodiment of the present invention.

Fig. 2b is a schematic structural diagram of a bridge contact according to an embodiment of the present invention.

Fig. 2c is a schematic structural diagram of a spring seat in an embodiment of the present invention.

Fig. 2d is a schematic structural diagram of the direct-acting double-break contact system according to the embodiment of the present invention.

Fig. 2e is a schematic structural diagram of the direct-acting double-break contact system according to the embodiment of the present invention.

Fig. 3a is a schematic structural diagram of a micro switch contact system according to an embodiment of the present invention.

Fig. 3b is a schematic structural diagram of the embodiment of the present invention in which the push rod just starts to contact the swing lever.

Fig. 3c is a schematic structural diagram of the embodiment of the present invention in which the push rod completely presses the swing lever.

Fig. 3d is a schematic structural diagram of the installation of the push rod in the embodiment of the present invention.

Fig. 3e is a schematic structural diagram of the spring installation in the embodiment of the present invention.

Fig. 3f is a schematic structural diagram of the second mounting groove in the embodiment of the present invention.

Fig. 3g is a schematic structural diagram of the push rod in the embodiment of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Examples

As shown in fig. 1a and 1B, a combined auxiliary contact group for a contactor comprises a housing 1, a contact support 2 is mounted on the housing 1 and can slide relative to the housing 1, and the contact support 2 is mounted on the housing 1 and can realize the connection and disconnection of a direct-acting double-breakpoint contact system a and a microswitch contact system B in the process of sliding relative to the housing 1;

the direct-acting double-breakpoint contact A0 in the direct-acting double-breakpoint contact system A and the micro-switch trigger mechanism B0 in the micro-switch contact system B are arranged on the contact support 2, and the contact support 2 drives the direct-acting double-breakpoint contact A0 and the micro-switch trigger mechanism B0 to be in contact with and separated from the corresponding double-breakpoint contact A1 and the corresponding micro-switch B1 in the process of sliding on the shell 1 relative to the shell 1, so that the direct-acting double-breakpoint contact system A and the micro-switch contact system B are switched on and off.

As shown in fig. 2a, 2b and 2c, the direct-acting double-break contact a0 includes a bridge contact a2, a bottom a20 of the bridge contact a2 is pressed against the upper groove wall 201a of the mounting groove 201 of the contact holder 2 by an upper end of a contact spring A3, a lower end of the contact spring A3 is mounted on an abutting portion a40 of a spring seat a4, tapered limiting portions a41 on both sides of the spring seat a4 are mounted on the corresponding shaped inner groove 101 of the housing 1, and the double-break contact a1 is fixedly mounted on the housing 1 corresponding to the bridge contact a 2.

As shown in fig. 2d and 2e, the operation process of the direct-acting double-break contact system a is as follows: when the contact bracket 2 is at the initial position of the housing 1, the double-breakpoint contact a1 installed on the housing 1 is assembled above the bridge contact a2 installed on the contact bracket 2, and as the contact spring A3 is compressed, the contact spring A3 generates a reverse acting force to push the bridge contact a2 to the double-breakpoint contact a1, so as to form the contact connection, as shown in fig. 2 d; when the contact support 2 slides downwards in the shell 1, the upper groove wall one 201a of the mounting groove one 201 of the contact support 2 drives the bridge contact A2 to be separated from the double-breakpoint contact A1, so that the disconnection of the contact is formed.

As shown in fig. 3a, the microswitch triggering mechanism B0 comprises a spring B2, the spring B2 is installed in the second mounting groove 202 of the contact carrier 2, one end of the spring B2 abuts against the second upper groove wall 202a of the second mounting groove 202, and the other end of the spring B3 abuts against a push rod B3, as shown in fig. 3d, the push rod B3 is installed on a slot hole 202B at the bottom of the second mounting groove 202, the push rod B3 can slide in the slot hole 202B, and the spring B2 can be pressed during the sliding process; a micro switch B1 is arranged on the shell 1, and a swing rod B101 of the micro switch B1 corresponds to the push rod B3. The microswitch B1 is connected with a circuit board B5, the circuit board B5 is connected with a contact board B4, and the circuit board B5 and the contact board B4 are both mounted on the shell 1.

As shown in fig. 3g, the push rod B3 has a convex edge B301, when the push rod B3 slides in the slot 202B, the convex edge B301 is limited by the wall of the slot 202B, and the rod of the push rod B3 extends out of the slot 202B and corresponds to the swing rod B101 of the microswitch B1. As shown in fig. 3f and 3e, the upper end of the spring B2 is mounted on the protrusion 202a01 of the upper groove wall 202a II of the second mounting groove 202, and the lower end is mounted in the groove B302 of the upper end face of the push rod B3. The protrusion 202a01 and the groove B302 are circular.

As shown in fig. 3a, when the contact holder 2 starts to slide in the housing 1, the push rod B3 and the spring B2 mounted on the contact holder 2 operate synchronously, as shown in fig. 3B, when the bottom surface of the rod portion of the push rod B3 moves to contact the swing rod B10 of the micro switch B1, the swing rod B101 is pressed to move, the micro switch B1 is triggered to operate, and when the swing rod B101 moves to the right position, the contact holder 2 continues to move, and the push rod B101 moves reversely along the moving direction of the contact holder 2 until the contact holder 2 slides to the right position, as shown in fig. 3 c.

The structure, proportion, size, quantity, etc. shown in the attached drawings of the embodiment of the present invention are only used for matching with the contents disclosed in the specification, so as to be known and read by people familiar with the art, not for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and the modification of any structure, the change of proportion relation or the adjustment of size should still fall within the range that the technical contents can be covered without affecting the function that the present invention can produce and the purpose that can be achieved. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", "clockwise", "counterclockwise", etc. used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered to be the scope of the present invention without substantial changes in the technical content.

Claims

1. A modular auxiliary contact set for a contactor, comprising a casing (1), characterized in that: the contact support (2) is arranged on the shell (1) and can slide relative to the shell (1), and the contact support (2) can be arranged on the shell (1) and can realize the connection and disconnection of a direct-acting double-breakpoint contact system (A) and a microswitch contact system (B) in the process of sliding relative to the shell (1);

the direct-acting type double-breakpoint contact (A0) in the direct-acting type double-breakpoint contact system (A) and the micro-switch trigger mechanism (B0) in the micro-switch contact system (B) are arranged on the contact support (2), the contact support (2) drives the direct-acting type double-breakpoint contact (A0) and the micro-switch trigger mechanism (B0) to be in contact with and separated from the corresponding double-breakpoint contact (A1) and the micro-switch (B1) on the shell (1) in a sliding process of the shell (1), so that the direct-acting type double-breakpoint contact system (A) and the micro-switch contact system (B) are connected and disconnected.

2. A modular auxiliary contact block for a contactor as claimed in claim 1, wherein: the direct-acting type double-breakpoint contact (A0) comprises a bridge-shaped contact (A2), the bridge-shaped contact (A2) is supported by the upper end of a contact spring (A3) to be pressed on an upper groove wall (201a) of a first mounting groove (201) of the contact support (2), the lower end of the contact spring (A3) is mounted on a spring seat (A4), the spring seat (A4) is mounted on an inner groove (101) of the shell (1), and the double-breakpoint contact (A1) is fixedly mounted on the shell (1) and corresponds to the bridge-shaped contact (A2).

3. A modular auxiliary contact block for a contactor as claimed in claim 1, wherein: micro-gap switch trigger mechanism (B0) includes spring (B2), spring (B2) dress is in one end supports in the second (202) of mounting groove on contact carrier (2) last cell wall two (202a) of mounting groove two (202), and the other end supports push rod (B3), push rod (B3) dress is in on slotted hole (202B) of mounting groove two (202) bottom, push rod (B3) can slide in slotted hole (202B), micro-gap switch (B1) is equipped with on casing (1), swing lever (B101) of micro-gap switch (B1) with push rod (B3) correspond.

4. A modular auxiliary contact block for a contactor as claimed in claim 3, wherein: the microswitch (B1) is connected with a circuit board (B5), the circuit board (B5) is connected with a contact plate (B4), and the circuit board (B5) and the contact plate (B4) are both arranged on the shell (1).

5. A modular auxiliary contact block for a contactor as claimed in claim 3, wherein: the push rod (B3) is provided with a convex edge (B301), when the push rod (B3) slides in the slotted hole (202B), the convex edge (B301) is limited by the hole wall of the slotted hole (202B), and the rod part of the push rod (B3) extends out of the slotted hole (202B) and corresponds to the swing rod (B101) of the microswitch (B1).

6. A modular auxiliary contact block for a contactor as claimed in claim 3, wherein: the upper end of the spring (B2) is arranged on the bulge (202a01) of the upper groove wall II (202a) of the mounting groove II (202), and the lower end of the spring (B2) is arranged in the groove (B302) on the upper end surface of the push rod (B3).

7. A modular auxiliary contact block for a contactor as claimed in claim 1, wherein: the direct-acting double-breakpoint contact system (A) and the micro-switch contact system (B) can be freely combined into at least two groups.