CN108962687B

CN108962687B - AC contactor

Info

Publication number: CN108962687B
Application number: CN201811081026.8A
Authority: CN
Inventors: 赵青青; 计新华; 金显将; 郑彬
Original assignee: Zhejiang Tengen Intelligent Electrical Appliance Co ltd; Zhejiang Tengen Electric Co Ltd
Current assignee: Zhejiang Tengen Intelligent Electrical Appliance Co ltd; Zhejiang Tengen Electric Co Ltd
Priority date: 2018-09-17
Filing date: 2018-09-17
Publication date: 2024-05-07
Anticipated expiration: 2038-09-17
Also published as: CN108962687A

Abstract

An AC contactor. Mainly solves the problems that the contact frame of the prior alternating current contactor mostly uses a torsion spring to realize the reset, however Niu Huangyi fatigue fracture brings unreliable and short service life to the long-term service life of the product. The method is characterized in that: the coil frame comprises a bottom plate (21), and springs (22) are arranged between the opposite surfaces of the bottom plate and the contact frame and correspond to the opposite corners of the bottom plate. The invention provides an alternating current contactor, which adopts two springs to realize the reset of a contact frame, and has stable performance and long service life.

Description

AC contactor

Technical Field

The invention relates to the field of piezoelectric devices, in particular to an alternating current contactor.

Background

Contactors are classified into alternating current contactors (voltage AC) and direct current contactors (voltage DC), and are applied to electric power, distribution and power utilization. An ac contactor is broadly referred to as an electric appliance in which a magnetic field is generated by a current flowing through a coil in industrial electricity, so that a contact is closed to control a load.

The working principle of the alternating current contactor is as follows: when the coil of the alternating current contactor is electrified, the coil current can generate a magnetic field, the generated magnetic field enables the static iron core to generate electromagnetic attraction to attract the movable iron core and drive the alternating current contactor to act, the normally closed contact is opened, and the normally open contact is closed, and the two are linked. When the coil is powered off, the electromagnetic attraction force disappears, the armature is released under the action of the release spring, the contact is restored, the normally open contact is opened, and the normally closed contact is closed.

The contact rack of the alternating current contactor in the market at present mostly uses torsion springs to realize resetting, however Niu Huangyi fatigue fracture brings unreliable service life and low service life of products.

Disclosure of Invention

In order to overcome the defects of the background technology, the invention provides an alternating current contactor, which mainly solves the problems that most of contact frames of the existing alternating current contactor use torsion springs to realize resetting, however Niu Huangyi fatigue fracture brings unreliable service life and short service life to a product for a long time.

The technical scheme adopted by the invention is as follows:

The utility model provides an alternating current contactor, includes the casing, be equipped with the coil former in the casing, be connected with the yoke on the coil former, still be equipped with movable mounting's contact frame in the casing, be equipped with the armature on the contact frame, the armature with the yoke corresponds the setting, its characterized in that: the coil rack comprises a bottom plate, a spring is arranged between the opposite surfaces of the bottom plate and the contact rack, and the spring corresponds to the opposite angle of the bottom plate.

The bottom plate is provided with a limiting pin, the contact frame is provided with a sinking groove, one end of the spring is sleeved outside the limiting pin, and the other end of the spring is arranged in the sinking groove.

The shell comprises an upper cover and a base, a first clamping hook is arranged at the bottom of the upper cover, and a first clamping groove matched with the first clamping hook in a clamping manner is formed in the base.

Still be equipped with the support in the base, first draw-in groove is located the support lateral wall, upper cover bottom with the contact of support top, first pothook stretches into in the support with first draw-in groove is connected.

The base is internally provided with an elastic baffle plate, the inner side of the first clamping hook is connected with the first clamping groove, the outer side of the first clamping hook is in contact with the baffle plate, the base is provided with a second clamping hook, and the upper cover is provided with a second clamping groove matched with the second clamping hook in a clamping way.

The coil rack side direction is equipped with the open slot, be equipped with the lug that can dismantle the connection in the open slot.

The opening groove is internally provided with a clamping block, and the wiring lug is provided with a groove matched with the clamping block in a clamping way.

The bottom of the open slot is also provided with a positioning slot, and the bottom of the wiring lug is provided with a convex hull which is matched with the positioning slot in a clamping way.

The base inner wall is equipped with two at least bead, two form the centre gripping groove between the bead, still include the static contact piece, the static contact piece middle-end with the spacing cooperation of centre gripping groove.

The contact frame is provided with a plurality of wire frames for installing movable contact pieces, and arc-isolating pieces are arranged between adjacent wire frames.

The beneficial effects of the invention are as follows: the invention provides an alternating current contactor, which adopts two springs to realize the reset of a contact frame, and has stable performance and long service life.

Drawings

Fig. 1 is an exploded view of one embodiment of the present invention.

Fig. 2 is a partial perspective view of an embodiment of the present invention.

Fig. 3 is a partial perspective view of an embodiment of the present invention.

Fig. 4 is a schematic perspective view of a lug according to an embodiment of the invention.

Fig. 5 is a partial perspective view of a coil former according to an embodiment of the present invention.

Fig. 6 is a partial perspective view of an embodiment of the present invention.

FIG. 7 is a schematic partial cross-sectional view of one embodiment of the invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings: as shown in the figure, the alternating current contactor comprises a shell 1, a coil frame 2 is arranged in the shell, a magnetic yoke 3 is connected to the coil frame, a movably mounted contact frame 5 is further arranged in the shell, an armature 51 is arranged on the contact frame and corresponds to the magnetic yoke, the coil frame comprises a bottom plate 21, a spring 22 is arranged between opposite faces of the bottom plate and the contact frame, and the spring corresponds to opposite angles of the bottom plate. When the coil is in use, the coil is electrified, the magnetic yoke attracts the armature, and the armature is arranged together with the contact frame, so that the contact frame can rise, and after the coil is powered off, the contact frame descends and resets under the action of the spring. The coil frame is fixedly arranged in the shell, the springs are arranged between the contact frame and the bottom plate, the two springs are correspondingly pressed against the diagonal position of the bottom plate, the stress is even, and the operation is stable.

In this embodiment, as shown in the figure, the bottom plate is provided with a limiting pin 211, the contact frame is provided with a sinking groove 51, one end of the spring is sleeved outside the limiting pin, and the other end of the spring is arranged in the sinking groove. Furthermore, a locating pin can be arranged in the sinking groove to strengthen the limit of the spring and prevent the spring from falling out.

In this embodiment, as shown in the drawing, the housing includes an upper cover 101 and a base 102, a first hook 1011 is provided at the bottom of the upper cover, and a first clamping groove 1021 engaged with the first hook is provided on the base. The first clamping hook and the first clamping groove are used for installation, screw connection is not needed, and the disassembly and assembly are more convenient.

In this embodiment, as shown in the figure, a support 1025 is further disposed in the base, the first clamping groove is disposed on the side wall of the support, the bottom of the upper cover contacts with the top of the support, and the first clamping hook extends into the support to be connected with the first clamping groove. The bottom of upper cover contacts with the top of support, and its first pothook stretches into in the support and is connected with first draw-in groove, and the installation is more firm.

In this embodiment, as shown in the drawing, a blocking piece 1022 with elasticity is further provided in the base, the inner side of the first hook is connected with the first clamping groove, the outer side of the first hook is in contact with the blocking piece, a second hook 1023 is provided on the base, and a second clamping groove 1013 in clamping fit with the second hook is provided on the upper cover. Further, the base is also provided with a second clamping hook which is used for being connected with a second clamping groove on the upper cover, and a baffle is arranged to block the outer side of the first clamping hook, prevent the first clamping hook from falling off, and the installation is more stable.

In this embodiment, as shown in the figure, the coil frame is laterally provided with an open slot 24, and a detachably connected lug 25 is disposed in the open slot. The disassembly and assembly are convenient.

In this embodiment, as shown in the drawing, a clamping block 241 is disposed in the opening slot, and a groove 251 engaged with the clamping block is disposed on the wiring piece. Through fixture block and groove connection, the installation is firm and convenient.

In this embodiment, as shown in the drawing, the bottom of the open slot is further provided with a positioning slot 242, and the bottom of the lug is provided with a convex hull 252 engaged with the positioning slot in a clamping manner. The winding wiring pin of the contactor coil is easy to fix and weld, and the electrified wiring is stable and reliable.

In this embodiment, as shown in the drawing, the inner wall of the base is provided with at least two ribs 26, between which a clamping groove 261 is formed, and the base further comprises a static contact 27, and the middle end of the static contact is in limit fit with the clamping groove. The contactor contacts are stably installed and limited, and the dynamic and static contacts are reliably attracted and contacted.

In this embodiment, as shown in the drawing, the contact frame is provided with a plurality of wire frames 28 for mounting movable contact pieces, and arc separation pieces 281 are disposed between adjacent wire frames. The arc-separating sheet is designed to prevent inter-phase arc.

In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The embodiments described with reference to the drawings are exemplary and intended to be illustrative of the invention and should not be construed as limiting the invention. The examples should not be construed as limiting the invention, but any modifications based on the spirit of the invention should be within the scope of the invention.

Claims

1. The utility model provides an alternating current contactor, includes casing (1), be equipped with coil former (2) in the casing, be connected with yoke (3) on the coil former, still be equipped with movable mounting's contact frame (5) in the casing, be equipped with armature (53) on the contact frame, armature with the yoke corresponds the setting, its characterized in that: the coil rack comprises a bottom plate (21), a spring (22) is arranged between the opposite surfaces of the bottom plate and the contact rack, the spring corresponds to the opposite corners of the bottom plate, a limiting pin (211) is arranged on the bottom plate, a sinking groove (51) is arranged on the contact rack, one end of the spring is sleeved outside the limiting pin, and the other end of the spring is arranged in the sinking groove.

2. An ac contactor as claimed in claim 1, wherein: the shell comprises an upper cover (101) and a base (102), a first clamping hook (1011) is arranged at the bottom of the upper cover, and a first clamping groove (1021) matched with the first clamping hook in a clamping mode is formed in the base.

3. An ac contactor as claimed in claim 2, wherein: still be equipped with support (1025) in the base, first draw-in groove is located the support lateral wall, upper cover bottom with support top contact, first pothook stretches into in the support with first draw-in groove is connected.

4. An ac contactor according to claim 3, wherein: still be equipped with in the base has elastic separation blade (1022), first pothook inboard with first draw-in groove is connected, the outside with the separation blade contact, be equipped with second pothook (1023) on the base, be equipped with on the upper cover with second draw-in groove (1013) of second pothook joint complex.

5. An ac contactor as claimed in claim 4, wherein: the coil rack is laterally provided with an open slot (24), and a lug (25) which is detachably connected is arranged in the open slot.

6. An ac contactor as claimed in claim 5, wherein: a clamping block (241) is arranged in the opening groove, and a groove (251) matched with the clamping block in a clamping way is formed in the wiring lug.

7. An ac contactor as claimed in claim 6, wherein: the bottom of the open slot is also provided with a positioning slot (242), and the bottom of the wiring lug is provided with a convex hull (252) which is in clamping fit with the positioning slot.

8. An ac contactor as claimed in claim 7, wherein: the base inner wall is equipped with two at least bead (26), two form centre gripping groove (261) between the bead, still include static contact piece (27), static contact piece middle-end with the spacing cooperation of centre gripping groove.

9. An ac contactor as claimed in claim 8, wherein: the contact frame is provided with a plurality of wire frames (28) for installing movable contact pieces, and arc separation pieces (281) are arranged between adjacent wire frames.