CN215069823U

CN215069823U - Double-coil switching mechanism of contactor

Info

Publication number: CN215069823U
Application number: CN202121684277.2U
Authority: CN
Inventors: 张华兵; 梁治平
Original assignee: Zhejiang Baiwo Electric Co ltd
Current assignee: Zhejiang Baiwo Electric Co ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2021-12-07
Anticipated expiration: 2031-07-22

Abstract

The utility model provides a double coil switching mechanism of contactor, include: a housing; the auxiliary support is movably arranged on the shell and is provided with at least one mounting cavity suitable for mounting the contact bridge and openings respectively arranged at two sides of the mounting cavity; the contact bridge is provided with a contact bridge main body arranged in the installation cavity and limiting blocks which are respectively arranged on two sides of the contact bridge main body and can be abutted against the outer wall of the corresponding opening; the stop block is detachably arranged on the contact bridge main body and is suitable for abutting against the inner walls of two sides of the installation cavity in the width direction; and one end of the spring is abutted against the auxiliary support, and the other end of the spring is abutted against the stop block. The stop blocks can abut against the inner walls of the two sides of the mounting cavity in the width direction, so that the contact bridge is prevented from turning over laterally; the dog shaping has the mounting groove that is suitable for installation spring one end, can not cause the damage to the contact bridge like this, has prolonged the life of contact bridge.

Description

Double-coil switching mechanism of contactor

Technical Field

The utility model relates to a contactor technical field, concretely relates to twin coil switching mechanism of contactor.

Background

The contactor is a device which can quickly cut off main circuits of alternating current and direct current and can frequently turn on and off a large-current control circuit, and is widely applied to electric power, matching and power utilization occasions.

Double-coil switching mechanism of current contactor, as shown in fig. 9 and 10, including auxiliary stand 01, and locate on auxiliary stand 01, can follow the contact bridge 02 that auxiliary stand reciprocated, contact bridge 02 has contact bridge main part 03, and locate the movable contact 04 at contact bridge main part 03 length direction both ends separately, auxiliary stand 01 is equipped with the installation cavity 05 that supplies contact bridge main part 03 to wear to establish, in order to inject the horizontal relative position of contact bridge 02 and auxiliary stand 01, be equipped with the stopper 06 that offsets with auxiliary stand 01 installation cavity 05 both sides between contact bridge main part 03 and the movable contact 04, contact bridge 02 is the structure of middle narrow both ends width promptly. When the contact bridge 02 is assembled with the auxiliary support 01, the contact bridge 02 needs to be inserted into the mounting cavity 05 of the auxiliary support 01 along a vertical state (as shown by an arrow in fig. 11) and then rotated to a horizontal state (as shown in fig. 9 and 10), and the assembly mode causes that the contact bridge 02 is easily turned over relative to the auxiliary support 01 (from the horizontal state to the vertical state) during actual use, so that a normal on-off function cannot be realized; in addition, a spring 07 is arranged between the contact bridge main body 03 and the top wall of the auxiliary support 01, in order to realize the positioning of the spring 07, a protrusion 08 which is abutted against the spring 07 is punched on the contact bridge main body 03, and as the contact bridge 02 is made of a metal material, the contact bridge 02 is easily damaged and is easily broken after being used for a long time, so that the service life is shortened; in addition, after the movable contact and the fixed contact of the contact mechanism are used for a period of time, an oxide film is formed on the contact surface of the movable contact and the fixed contact, and therefore contact resistance is increased.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the contact bridge among the prior art defect that turns on one's side easily, life is short to a double coil switching mechanism of difficult, the long service life's of turning on one's side contactor is provided.

Therefore, the utility model provides a double-coil switching mechanism of a contactor, which comprises a shell, an auxiliary bracket, a contact bridge, a stop block and a spring, wherein the auxiliary bracket is movably arranged on the shell and is provided with at least one installation cavity suitable for installing the contact bridge and openings respectively arranged at two sides of the installation cavity; the contact bridge is provided with a contact bridge main body arranged in the installation cavity and limiting blocks which are respectively arranged on two sides of the contact bridge main body and can be abutted against the outer wall of the corresponding opening; the stop block is detachably arranged on the contact bridge main body and is suitable for abutting against the inner walls of two sides of the installation cavity in the width direction; the spring is arranged on one side, far away from the contact bridge, of the stop block, one end of the spring is abutted to the auxiliary support, the other end of the spring is abutted to the stop block, and the spring applies elastic acting force towards the stop block to enable the spring to be in compression connection with the contact bridge.

The cross section of the mounting cavity is rectangular, and the cross section of the stop block is rectangular and matched with the mounting cavity.

The contact bridge main part is located its two with one side form the draw-in groove between the stopper, the both sides of dog length direction have outwards extend, with correspond draw-in groove interference fit's fixture block.

The stop block is formed with a mounting groove or a protrusion suitable for mounting one end of the spring.

The shell is provided with a plurality of fixed contacts, the contact bridge is provided with a movable contact which is arranged corresponding to the fixed contacts, and the contact bridge has a first state which moves along the vertical direction along with the auxiliary support and a second state which is driven by the auxiliary support to move along the transverse direction so that the movable contact and the fixed contacts are in friction.

The outer wall of opening part is equipped with from inside to outside, slope downwardly extending's fitting surface, wherein, when in the second state, the fitting surface with the stopper relative slip.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a twin coil switching mechanism of contactor, including casing, auxiliary stand, contact bridge, dog and spring, the dog is located between spring and the contact bridge, is suitable for and offsets with installation cavity width direction's both sides inner wall to make the contact bridge be difficult for turning on one's side, compare with prior art, improved the reliability like this, prolonged life.

2. The utility model provides a double coil switching mechanism of contactor, contact bridge main part lie in its with forming the draw-in groove between two stoppers of one side, dog length direction's both sides have outwards extend, with corresponding draw-in groove interference fit's fixture block, through setting up draw-in groove and fixture block for the dog is fixed more firmly with the contact bridge, has improved the reliability.

3. The utility model provides a double coil switching mechanism of contactor, dog shaping have the mounting groove or the arch that are suitable for installation spring one end, need set up the bellied mode that is used for positioning spring on the contact bridge with prior art, can not cause the damage to the contact bridge like this, have prolonged the life of contact bridge.

4. The utility model provides a double coil switching mechanism of contactor, the outer wall of opening part are equipped with from inside to outside, slope downwardly extending's fitting surface, and wherein, when the second state, the fitting surface and the stopper relative slip of auxiliary stand to the moving contact relative static contact lateral shifting of drive contact bridge makes, removes the oxide film through the friction is automatic between the movable contact, the static contact, has reduced contact resistance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a double-coil switching mechanism of a contactor according to the present invention;

FIG. 2 is a first cross-sectional view of FIG. 1;

FIG. 3 is a second cross-sectional view of FIG. 1;

FIG. 4 is a partially enlarged schematic view of FIG. 3;

FIG. 5 is a partially enlarged schematic view of FIG. 1;

FIG. 6 is a schematic view of the assembly of the contact bridge, stop and spring;

FIG. 7 is an exploded view of the contact bridge, stop and spring;

FIG. 8 is an assembled perspective view of the contact bridge and the auxiliary support;

FIG. 9 is a schematic view of the assembly of a prior art accessory bracket with a contact bridge;

FIG. 10 is a cross-sectional view of FIG. 9;

fig. 11 is an initial assembly view of the contact bridge and the auxiliary support.

Description of reference numerals: 01. an auxiliary support; 02. a contact bridge; 03. a contact bridge body; 04. a movable contact; 05. a mounting cavity; 06. a limiting block; 07. a spring; 08. a protrusion;

1. a housing; 2. an auxiliary support; 21. a mounting cavity; 22. an opening; 23. a mating surface; 3. a contact bridge; 31. a contact bridge body; 32. a limiting block; 33. a card slot; 4. a stopper; 41. a clamping block; 42. mounting grooves; 5. a spring; 6. static contact; 7. moving contact.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Examples

The present embodiment provides a double coil switching mechanism of a contactor, as shown in fig. 1 to 4, including a housing 1, an auxiliary bracket 2, a contact bridge 3, a stopper 4, and a spring 5.

The shell 1 is provided with two groups of static contacts 6.

The auxiliary support 2 is mounted on the housing 1 in a vertically movable manner, and has two mounting cavities 21 adapted to mount the contact bridge 3, two openings 22 are respectively provided at two sides of the mounting cavities 21, as shown in fig. 5, and mating surfaces 23 extending obliquely downward from inside to outside are provided on outer walls of the openings 22. In this embodiment, the cross section of the mounting cavity 21 is rectangular.

The contact bridge 3, as shown in fig. 6-8, has a contact bridge main body 31 disposed in the installation cavity 21, and four limit blocks 32 respectively disposed on two sides of the contact bridge main body 31 and capable of abutting against the outer wall of the corresponding opening 22, and a slot 33 is formed between the two limit blocks 32 located on the same side (left and right sides) of the contact bridge main body 31. The contact bridge 3 is provided with a movable contact 7 which is arranged corresponding to the fixed contact 6. The contact bridge 3 has a first state of vertically moving along with the auxiliary support 2 and a second state of horizontally moving under the driving of the auxiliary support 2 to enable the movable contact 7 to rub against the fixed contact 6, wherein in the first state, the auxiliary support 2 drives the contact bridge 3 to move upwards until the movable contact 7 is communicated with the fixed contact 6 in a contacting manner; at this time, if the auxiliary support 2 continues to move upward, the contact bridge 3 does not move in the vertical direction due to the blocking of the fixed contact 6, and the matching surface 23 of the auxiliary support 2 is arranged obliquely, so that the driving limiting block 32 moves to the left in the transverse direction, and the movable contact 7 rubs against the fixed contact 6.

The stop block 4 is detachably mounted on the contact bridge main body 31, the stop block 4 is suitable for abutting against the inner walls of two sides of the mounting cavity 21 in the width direction, and in this embodiment, the cross section of the stop block 4 is a rectangle adapted to the mounting cavity 21. The two sides of the stop block 4 in the length direction are provided with a clamping block 41 which extends outwards and is in interference fit with the corresponding clamping groove 33, and the stop block 4 is further formed with a mounting groove 42 or a protrusion which is suitable for mounting one end of the spring 5. During assembly, the stop 4 is inserted into the mounting cavity 21 along the transverse direction and assembled with the contact bridge 3.

The utility model provides a double coil switching mechanism of contactor, including casing 1, auxiliary stand 2, contact bridge 3, dog 4 and spring 5, dog 4 is located between spring 5 and the contact bridge 3, is suitable for and offsets with 21 width direction's of installation cavity both sides inner wall to prevent that contact bridge 3 from turning on one's side, compare with prior art, improved the reliability like this, prolonged life.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A double coil switching mechanism of a contactor, comprising:

a housing (1);

the auxiliary support (2) is movably arranged on the shell (1) and is provided with at least one mounting cavity (21) suitable for mounting the contact bridge (3) and openings (22) respectively arranged at two sides of the mounting cavity (21);

the contact bridge (3) is provided with a contact bridge main body (31) arranged in the installation cavity (21) and limiting blocks (32) which are respectively arranged on two sides of the contact bridge main body (31) and can be abutted against the outer wall of the corresponding opening (22);

the stop block (4) is detachably mounted on the contact bridge main body (31), and the stop block (4) is suitable for abutting against the inner walls of two sides of the mounting cavity (21) in the width direction;

the spring (5) is arranged on one side, far away from the contact bridge (3), of the stop block (4), one end of the spring (5) is abutted to the auxiliary support (2), the other end of the spring is abutted to the stop block (4), and the spring (5) applies elastic acting force for enabling the spring and the contact bridge (3) to be tightly pressed and connected towards the stop block (4).

2. The double coil switching mechanism of contactor as claimed in claim 1, wherein the cross section of said mounting cavity (21) is rectangular, and the cross section of said stopper (4) is rectangular adapted to said mounting cavity (21).

3. The dual-coil switching mechanism of the contactor as claimed in claim 1 or 2, wherein a slot (33) is formed between two of the limiting blocks (32) of the contact bridge main body (31) located on the same side thereof, and two sides of the stopper (4) in the length direction are provided with clamping blocks (41) extending outwards and being in interference fit with the corresponding slot (33).

4. The double coil switching mechanism of contactor according to claim 1, wherein the stopper (4) is formed with a mounting groove (42) or protrusion adapted to mount one end of the spring (5).

5. The dual-coil switching mechanism of the contactor as claimed in claim 1, wherein the housing (1) is provided with a plurality of fixed contacts (6), the contact bridge (3) is provided with a movable contact (7) corresponding to the fixed contacts (6), the contact bridge (3) has a first state moving along the vertical direction along with the auxiliary support (2) and a second state moving along the horizontal direction under the driving of the auxiliary support (2) to rub the movable contact (7) against the fixed contacts (6).

6. The double coil switching mechanism of contactor as claimed in claim 5, wherein the outer wall at the opening (22) is provided with a fitting surface (23) extending obliquely downward from inside to outside, wherein the fitting surface (23) slides relative to the stopper (32) in the second state.