CN109119290B

CN109119290B - contactor

Info

Publication number: CN109119290B
Application number: CN201811081011.1A
Authority: CN
Inventors: 陶国; 周良; 计新华; 赵青青
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: 2023-11-17
Anticipated expiration: 2038-09-17
Also published as: CN109119290A

Abstract

A contactor. The main square structure of most of cushioning parts in having solved present contactor, area of contact is less when installing with the mounting groove of coil former, produces plastic deformation easily after long-time frequent action, makes the overall journey of product reduce, influences the product performance, and the inconvenient problem of assembly moreover. The method is characterized in that: the coil rack is provided with a first mounting groove, a first arc surface is arranged at the bottom of the first mounting groove, the coil rack further comprises a connecting rod connected with the magnetic yoke, buffer pieces made of elastic materials are arranged at two ends of the connecting rod, and the buffer pieces are arranged in the first mounting groove, and second arc surfaces are arranged at the bottoms of the buffer pieces and correspond to the first arc surfaces. The bottom of the buffer part of the contactor is an arc surface, the bottom of the mounting groove is also an arc surface, the contact area of the buffer part and the mounting groove is large, the contactor is not easy to deform, the influence on the overall process of a product due to deformation of the buffer part after frequent actions of the contactor is reduced, the stability of the performance of the product is improved, and the contactor is convenient to mount.

Description

Contactor

Technical Field

The invention relates to the field of piezoelectric devices, in particular to a 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. Contactors are broadly electric appliances 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 contactor is as follows: when the contactor coil is electrified, 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 contact 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.

Most of the buffer parts in the existing contactor are of square structures, the contact area is small when the buffer parts are installed in the installation groove of the coil rack, plastic deformation is easy to occur after long-time frequent actions, the total stroke of products is reduced, the performance of the products is affected, and the assembly is inconvenient.

Disclosure of Invention

In order to overcome the defects of the background technology, the invention provides the contactor, which mainly solves the problems that most of buffer parts in the conventional contactor are square in structure, small in contact area when being installed with a mounting groove of a coil rack, easy to generate plastic deformation after frequent actions for a long time, and inconvenient to assemble, and the total stroke of products is reduced, the performance of the products is influenced.

The technical scheme adopted by the invention is as follows:

the contactor comprises a shell, a coil rack is arranged in the shell, a magnetic yoke is connected to the coil rack, an armature is correspondingly arranged in the shell and corresponds to the magnetic yoke, a first mounting groove is formed in the coil rack, a first arc surface is arranged at the bottom of the first mounting groove, the contactor further comprises a connecting rod connected with the magnetic yoke, buffer pieces made of elastic materials are arranged at two ends of the connecting rod, and the buffer pieces are arranged in the first mounting groove, and second arc surfaces are correspondingly arranged at the bottom of the buffer pieces and correspond to the first arc surfaces.

And the magnetic yoke is provided with a through hole in clearance fit with the connecting rod.

The coil rack is provided with a support, the first mounting groove is formed in the support, the first mounting groove comprises a square groove and an arc groove, the square groove is communicated with the arc groove, the bottom of the arc groove is provided with a first arc surface, the buffer piece comprises a square block and a boss which are in clearance fit with the square groove, and the bottom of the boss is provided with a second arc surface.

The coil rack is characterized by further comprising a wiring piece detachably connected with the coil rack, a second mounting groove is formed in the side face of the coil rack, an L-shaped groove is formed in the front end of the second mounting groove, a retaining wall is arranged at the rear end of the second mounting groove, an L-shaped part is correspondingly arranged at the front end of the wiring piece and corresponds to the L-shaped groove, and a corner is correspondingly formed in the rear end of the wiring piece and corresponds to the retaining wall.

The inner wall of the second mounting groove is provided with a plurality of convex ribs which are in abutting press fit with the outer wall of the wiring lug.

The inner wall of the second mounting groove is also provided with a clamping groove, and the wiring lug is provided with a clamping block matched with the clamping groove in a clamping way.

The shell comprises a base and an upper cover which are detachably connected.

The limiting piece comprises a connecting piece extending out of the second mounting groove, opposite hanging pieces are arranged on two sides of the connecting piece, and a third mounting groove corresponding to the opposite hanging pieces is arranged on the base.

The upper cover is provided with at least two pressing ribs, and the two pressing ribs are propped against the upper end face of the wiring lug.

The beneficial effects of the invention are as follows: the bottom of the buffer part of the contactor is an arc surface, the bottom of the mounting groove is also an arc surface, the contact area of the buffer part and the mounting groove is large, the contactor is not easy to deform, the influence on the overall process of a product due to deformation of the buffer part after frequent actions of the contactor is reduced, the stability of the performance of the product is improved, and the contactor is convenient to mount.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

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

Fig. 3 is an enlarged schematic view at a in fig. 2.

Fig. 4 is a schematic view of a partial explosion of an embodiment of the present invention.

Fig. 5 is a schematic view of a tab according to an embodiment of the invention.

Fig. 6 is a perspective view of a coil former according to an embodiment of the present invention.

Fig. 7 is an enlarged schematic view at B in fig. 6.

FIG. 8 is a schematic partial cross-sectional view of one embodiment of the present invention.

Fig. 9 is a schematic partial cross-sectional view of an embodiment of the present invention.

Fig. 10 is a partial perspective view of an embodiment of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings: as shown in the figure, the contactor comprises a shell 1, a coil frame 2 is arranged in the shell, a magnetic yoke 3 is connected to the coil frame, an armature is correspondingly arranged in the shell and corresponds to the magnetic yoke, a first mounting groove 21 is formed in the coil frame, a first arc surface 216 is arranged at the bottom of the first mounting groove, a connecting rod 41 connected with the magnetic yoke is further arranged at the bottom of the first mounting groove, buffer pieces 42 made of elastic materials are arranged at two ends of the connecting rod, and the buffer pieces are arranged in the first mounting groove and are correspondingly provided with second arc surfaces 421 at the bottom of the buffer pieces and the first arc surfaces. The bottom of the buffer piece of the contactor is an arc-shaped surface, the bottom of the mounting groove is also an arc-shaped surface, the contact area of the buffer piece and the mounting groove is large, the buffer piece is not easy to deform, and the mounting is convenient. The buffer member can be made of rubber, silica gel and the like and has certain deformability. When the armature contacts the magnetic yoke, the magnetic yoke can deflect along with the deflection angle of the armature and then completely contacts the armature, the magnetic yoke is arranged on the connecting rod, two ends of the connecting rod are fixedly connected with the buffer piece, the bottom of the buffer piece is an arc-shaped surface, the installation is convenient, and the armature is further correspondingly arranged below the magnetic yoke (see fig. 2-4).

In this embodiment, the yoke is provided with a through hole in clearance fit with the connecting rod. When the armature is inclined, the magnetic yoke rotates along with the armature when the magnetic yoke contacts the armature, so that the contact surface is fully contacted, and noise is reduced.

In this embodiment, as shown in fig. 4, the coil former is provided with a support 20, the first mounting groove is disposed in the support, the first mounting groove includes a square groove 210 and an arc groove 211 with a first arc surface at the bottom, the buffer member includes a square block 420 and a boss 421 in clearance fit with the square groove, and the bottom of the boss is the second arc surface. The square block can prevent the buffer piece from rotating excessively, so that the use effect is better.

In this embodiment, as shown in fig. 5, the coil rack further includes a connection piece 5 detachably connected to the coil rack, a second mounting groove 11 is provided on a side surface of the coil rack, an L-shaped groove 111 is provided at a front end in the second mounting groove, a blocking wall 112 is provided at a rear end in the second mounting groove, an L-shaped portion 51 is provided at a front end of the connection piece corresponding to the L-shaped groove, and a corner 52 is provided at a rear end corresponding to the blocking wall. The wire connecting piece is used for preventing the wire connecting piece from being thrown out due to centrifugal force in the coil winding process.

In this embodiment, as shown in fig. 7, the inner wall of the second mounting groove is provided with a plurality of ribs 113 that are in press fit with the outer wall of the lug. The wiring lugs are further limited, and the wiring lugs are prevented from falling out.

In this embodiment, as shown in fig. 8, the inner wall of the second mounting groove is further provided with a clamping groove 114, and the wire lug is provided with a clamping block 53 that is in clamping fit with the clamping groove. And the lateral loosening of the wiring lug is prevented.

In this embodiment, the housing includes a base 101 and an upper cover 102 that are detachably connected. The connection can be realized by a screw connection mode or the like, or can be realized by a direct clamping mode or the like.

In this embodiment, as shown in fig. 3, the limiting piece includes a connecting piece 54 extending out of the second mounting groove, opposite hanging 541 is disposed on two sides of the connecting piece, and a third mounting groove 1011 is disposed on the base 101 corresponding to the opposite hanging. The third mounting groove supports one end of the connecting sheet, so that the connecting sheet is more stably mounted.

In this embodiment, as shown in fig. 9, at least two pressing ribs 1021 are disposed on the upper cover, and the two pressing ribs are pressed against the upper end surface of the lug. The wire connecting piece is effectively prevented from being deformed and separated from the second mounting groove when being subjected to larger wire connecting torsion.

In this embodiment, as shown in fig. 10, the device further includes a contact support 8, an indication rod 81 is provided on the contact support, a guide groove 26 is provided on the coil rack, and a middle end of the indication rod is provided in the guide groove and is in limit fit with the guide groove. As a preferable scheme, the indicating rod and the contact support are integrally arranged, and when the contact supports up-and-down movement, the indicating rod moves up-and-down in the guide groove to play a role in guiding and limiting.

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 contactor comprises a shell (1), a coil rack (2) is arranged in the shell, a magnetic yoke (3) is connected to the coil rack, and an armature corresponding to the magnetic yoke is arranged in the shell, and the contactor is characterized in that: the coil rack is provided with a first mounting groove (21), the bottom of the first mounting groove is provided with a first arc surface (216), the coil rack further comprises a connecting rod (41) connected with the magnetic yoke, two ends of the connecting rod are provided with buffer pieces (42) made of elastic materials, the buffer pieces are mounted in the first mounting groove, and the bottom of the buffer pieces is provided with a second arc surface corresponding to the first arc surface; the first mounting groove comprises a square groove (210) and an arc groove (211) with the bottom being a first arc surface, the buffer piece comprises a square block (420) and a boss (421) which are in clearance fit with the square groove, and the bottom of the boss is the second arc surface.

2. The contactor according to claim 1, wherein: the coil rack is provided with a support (20), and the first mounting groove is formed in the support.

3. The contactor according to claim 2, wherein: the coil rack is characterized by further comprising a wiring piece (5) detachably connected with the coil rack, a second mounting groove (11) is formed in the side face of the coil rack, an L-shaped groove (111) is formed in the front end of the second mounting groove, a retaining wall (112) is arranged at the rear end of the second mounting groove, an L-shaped portion (51) corresponding to the L-shaped groove is arranged at the upper front end of the wiring piece, and a corner (52) corresponding to the retaining wall is formed in the rear end of the wiring piece.

4. A contactor according to claim 3, wherein: the inner wall of the second mounting groove is provided with a plurality of convex ribs (113) which are in abutting press fit with the outer wall of the wiring lug.

5. The contactor according to claim 4, wherein: the inner wall of the second mounting groove is also provided with a clamping groove (114), and the wiring lug is provided with a clamping block (53) which is matched with the clamping groove in a clamping way.

6. The contactor according to claim 5, wherein: the housing comprises a base (101) and an upper cover (102) which are detachably connected.

7. The contactor according to claim 6, wherein: the wiring piece comprises a connecting piece (54) extending out of the second mounting groove, opposite hanging pieces (541) are arranged on two sides of the connecting piece, and a third mounting groove (1011) corresponding to the opposite hanging pieces is formed in the base (101).

8. The contactor according to claim 6, wherein: at least two pressing ribs (1021) are arranged on the upper cover, and the two pressing ribs are propped against the upper end face of the wiring lug.

9. The contactor according to claim 1, wherein: the coil rack is characterized by further comprising a contact support (8), wherein an indication rod (81) is arranged on the contact support, a guide groove (26) is formed in the coil rack, and the middle end of the indication rod is arranged in the guide groove and is in limit fit with the guide groove.