CN111370265A

CN111370265A - Contactor structure

Info

Publication number: CN111370265A
Application number: CN202010280751.9A
Authority: CN
Inventors: 未彬
Original assignee: Individual
Current assignee: Changzhou Tianli Intelligent Control Co ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-07-03
Anticipated expiration: 2040-04-10
Also published as: CN111370265B

Abstract

The invention discloses a contactor structure, which comprises a shell, wherein an electromagnet is arranged at the bottom in the shell, the movable iron core is installed on electromagnet upper portion, install first connecting rod on the movable iron core, install reset spring between first connecting rod top and the shell, transversely install the horizontal pole on the first connecting rod, the movable contact is installed to horizontal pole bilateral symmetry, normally closed contact terminal is installed to shell upper portion bilateral symmetry, normally closed contact is installed to normally closed contact terminal in the shell, normally closed contact corresponds with the movable contact point position, normally open contact terminal is installed to the shell part down, normally open contact is installed to normally open contact terminal in the shell, normally open contact corresponds with the movable contact point position, the back shaft is installed to the symmetry between normally closed contact terminal and the normally open contact terminal, two back shafts are located the movable contact both sides, first axle sleeve is installed to. The invention can solve the defects of the prior art, realize the rapid arc extinction between the contacts of the contactor and improve the performance of the contactor.

Description

Contactor structure

Technical Field

The invention relates to an electric appliance control device, in particular to a contactor structure.

Background

The contactor is an electrical appliance device which is applied to the occasions of electric power, power distribution and electricity utilization, and the contactor is closed by utilizing the magnetic field generated by the current flowing through the coil so as to control the load. Chinese invention patent CN 107591289B discloses a contactor. The contactor with the structure has a simple structure, and can not realize the rapid elimination of electric arcs between contacts, thereby limiting the application range of the contactor.

Disclosure of Invention

The invention aims to provide a contactor structure, which can solve the defects of the prior art, realize rapid arc extinction between contacts of a contactor and improve the performance of the contactor.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows.

A contactor structure comprises a shell, wherein an electromagnet is installed at the bottom in the shell, a movable iron core is installed at the upper part of the electromagnet, a first connecting rod is installed on the movable iron core, a reset spring is installed between the top end of the first connecting rod and the shell, a cross rod is transversely installed on the first connecting rod, moving contacts are symmetrically installed on two sides of the cross rod, normally closed contact binding posts are symmetrically installed on two sides of the upper part of the shell, normally closed contacts are installed in the shell and correspond to the moving contacts, a normally open contact binding post is installed on the lower part of the shell, a normally open contact is installed in the shell and corresponds to the moving contacts, supporting shafts are symmetrically installed between the normally closed contact binding post and the normally open contact binding post and are located on two sides of the moving contacts, first shaft sleeves are symmetrically, the two ends of the first shaft sleeve are provided with transmission cylinders which are sleeved on the support shaft and are in sliding contact with the support shaft, the two ends of the transmission cylinder on the support shaft on the left side of the movable contact are symmetrically provided with second shaft sleeves, the middle of the support shaft is obliquely provided with a third groove, a first bulge is arranged in each second shaft sleeve and is in sliding insertion with the third groove, a first support arm is transversely arranged on each second shaft sleeve, the movable end of each first support arm is provided with a first stop block, the side surface of each first stop block is provided with a first insert block, the first insert block is internally provided with two symmetrical first grooves, an insertion joint is formed between the two first grooves, the two ends of the transmission cylinder on the support shaft on the right side of the movable contact are symmetrically provided with the third shaft sleeves, the third bulge is arranged in each third shaft sleeve, the second bulge is in sliding insertion with the third groove in the support shaft on the right side, the second stop block is provided with a second insert on the side surface, a second groove is arranged in the second insert, the plug connector corresponds to the second groove, and the first insert is in plug fit with the second insert.

Preferably, the two sides of the shell are symmetrically provided with stop blocks, the upper ends of the stop blocks are provided with fourth grooves, the lower ends of the stop blocks are provided with fifth grooves, the two ends of the cross rod are provided with sleeves, the sleeves are internally provided with first springs, the first springs are externally provided with ejector blocks, and the ejector blocks are in sliding contact with the stop blocks.

Preferably, a second connecting rod is arranged between the movable contact and the cross rod and is in sliding contact with the cross rod, second springs are symmetrically arranged between the cross rod and the movable contact, and a silver contact layer is arranged on the surface of the movable contact.

Preferably, wear-resistant layers are arranged on two sides of the first insert block.

Adopt the beneficial effect that above-mentioned technical scheme brought to lie in: the invention installs a stop block which can be linked with the moving contact between the moving contact and the normally open contact and the normally closed contact, and the stop block is installed with an insert block, when the state of the contactor changes, the electromagnet acts, the movable iron core is attracted by the electromagnetic force of the electromagnet to move downwards, the first connecting rod installed on the movable iron core drives the cross rod to move downwards, the moving contact installed on the cross rod simultaneously moves downwards to separate from the normally closed contact, the first shaft sleeves at the two ends of the cross rod drive the transmission cylinder to move downwards, thereby the second shaft sleeve moves downwards, the first bulge in the second shaft sleeve is inserted with the third groove which is arranged on the supporting shaft in a sliding way, the second shaft sleeve rotates, thereby driving the first supporting arm on the second shaft sleeve to rotate along the horizontal direction, meanwhile, the third shaft sleeve on the right side of the moving contact also acts to drive the second supporting arm to rotate along the horizontal, the first insert block on the first supporting arm and the second insert block on the second supporting arm move oppositely, two symmetrical first grooves are arranged in the first insert block, an inserting joint is formed between the two first grooves, a second groove is arranged in the second insert block, the inserting joint corresponds to the second groove, the first insert block and the second insert block are inserted together, the two insert blocks are positioned between the movable contact and the normally closed contact, when the contactor acts, the two insert blocks made of insulating materials move oppositely and are inserted together, the function of rapidly cutting off electric arcs between the contacts is realized, when the contactor acts, the same insert block structure between the movable contact and the normally open contact is changed into a separated state by insertion due to opposite moving directions in the downward moving process of the movable iron core, thereby ensuring the smooth closing of the contacts, when the electromagnet is powered off, the reset spring drives the movable iron core to move upwards, the second shaft sleeve and the third shaft sleeve rotate reversely to drive the first supporting arm and the second supporting arm to move reversely, the insert block between the movable contact and the normally closed contact is opened, the insert block between the movable contact and the normally open contact is closed, so that the rapid arc extinguishing effect between the two groups of contacts is realized, the stop block is arranged in the shell, the upper part and the lower part of the stop block are respectively provided with a fourth groove and a fifth groove, the two ends of the cross rod are provided with spring-supported ejector blocks, when the contactor acts, the ejector blocks slide into the fourth groove or the fifth groove, a certain resistance is generated in the motion process of the cross rod through the spring pressure to prevent the malfunction of the contactor, a second connecting rod is arranged between the movable contact and the cross rod and is in sliding contact with the cross rod, second springs are symmetrically arranged between the cross rod and the movable contact, when the movable contact is in contact with the normally open contact or the normally, the movable contact surface is provided with silver contact layer, can effectively strengthen electrically conductive effect, and the wearing layer is installed to first inserted block both sides, prevents to contact wear with the contact at the inserted block action in-process to realize the function of quick arc extinction between the contactor contact, and improved the contactor performance.

Drawings

FIG. 1 is a block diagram of one embodiment of the present invention.

Fig. 2 is a top view of the a mechanism in one embodiment of the present invention.

FIG. 3 is a top view of the B mechanism in one embodiment of the present invention.

Fig. 4 is a structural diagram of the a mechanism in one embodiment of the present invention.

Fig. 5 is a structural diagram of a B mechanism in one embodiment of the present invention.

Fig. 6 is a block diagram of the moving contact in an embodiment of the present invention.

In the figure: 1. a housing; 2. an electromagnet; 3. a movable iron core; 4. a first link; 5. a cross bar; 6. a movable contact; 7. a normally closed contact terminal; 8. a normally closed contact; 9. a normally open contact terminal; 10. a normally open contact; 11. a support shaft; 12. a first bushing; 13. a transmission cylinder; 14. a second shaft sleeve; 15. a first support arm; 16. a sleeve; 17. a top block; 18. a first spring; 19. a stopper; 20. a fourth groove; 21. a fifth groove; 22. a sixth groove; 23. a first protrusion; 24. a first stopper; 25. a silver contact layer; 26. a first insert block; 27. a third shaft sleeve; 28. a second protrusion; 29. a second support arm; 30. a second stopper; 31. a second insert block; 32. a third groove; 33. a first groove; 34. a plug-in connector; 35. an aperture; 36. a locking head; 37. a third spring; 38. a wear layer; 39. a second groove; 40. a second link; 41. a second spring; 42. a return spring.

Detailed Description

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description and the description of the attached drawings, and the specific connection mode of each part adopts the conventional means of mature bolts, rivets, welding, sticking and the like in the prior art, and the detailed description is not repeated.

Referring to fig. 1-6, a specific embodiment of the present invention includes a housing 1, an electromagnet 2 is installed at the bottom inside the housing 1, a movable iron core 3 is installed at the upper portion of the electromagnet 2, a first connecting rod 4 is installed on the movable iron core 3, a return spring 42 is installed between the top end of the first connecting rod 4 and the housing 1, a cross rod 5 is installed transversely on the first connecting rod 4, moving contacts 6 are symmetrically installed at both sides of the cross rod 5, normally closed contact binding posts 7 are symmetrically installed at both sides of the upper portion of the housing 1, a normally closed contact 8 is installed in the housing 1 by the normally closed contact binding post 7, the normally closed contact 8 corresponds to the moving contact 6, a normally open contact binding post 9 is installed at the lower portion of the housing 1, a normally open contact 10 is installed in the housing 1 by the normally open contact binding post 9, the normally open contact, two support shafts 11 are positioned at two sides of a movable contact 6, first shaft sleeves 12 are symmetrically arranged at two ends of a cross rod 5, the first shaft sleeves 12 are sleeved on the support shafts 11, transmission cylinders 13 are arranged at two ends of the first shaft sleeves 12, the transmission cylinders 13 are sleeved on the support shafts 11 and are in sliding contact with the support shafts 11, second shaft sleeves 14 are symmetrically arranged at two ends of the transmission cylinders 13 on the support shafts 11 at the left side of the movable contact 6, third grooves 32 are obliquely arranged in the middle of the support shafts 11, first bulges 23 are arranged in the second shaft sleeves 14, the first bulges 23 are in sliding insertion connection with the third grooves 32, first support arms 15 are transversely arranged on the second shaft sleeves 14, first stop blocks 24 are arranged at movable ends of the first support arms 15, first insertion blocks 26 are arranged on the side surfaces of the first stop blocks 24, two symmetrical first grooves 33 are arranged in the first insertion blocks 26, insertion joints 34 are formed between the two first grooves 33, third shaft sleeves 27 are symmetrically arranged at two ends of the transmission cylinders, a second bulge 28 is installed in the third shaft sleeve 27, the second bulge 28 is in sliding insertion connection with a third groove 32 in the right support shaft 11, a second support arm 29 is installed on the third shaft sleeve 27 in the transverse direction, a second stop block 30 is installed at the movable end of the second support arm 29, a second insert block 31 is installed on the side face of the second stop block 30, a second groove 39 is arranged in the second insert block 31, the plug 34 corresponds to the second groove 39, and the first insert block 26 is in insertion connection and matching with the second insert block 31. When the state of the contactor changes, the electromagnet 2 acts, the movable iron core 3 is attracted by the magnetic force of the electromagnet 2 to move downwards, the first connecting rod 4 arranged on the movable iron core 3 drives the cross rod 5 to move downwards, the movable contact 6 arranged on the cross rod 5 simultaneously moves downwards to be separated from the normally closed contact 8, the first shaft sleeves 12 at two ends of the cross rod 5 drive the transmission cylinders 13 to move downwards, so that the second shaft sleeve 14 moves downwards, the first bulge 23 in the second shaft sleeve 14 is in sliding insertion connection with the third groove 32 obliquely arranged on the support shaft 11, so that the second shaft sleeve 14 rotates, so that the first support arm 15 on the second shaft sleeve 14 is driven to rotate along the horizontal direction, meanwhile, the third shaft sleeve 27 on the right side of the movable contact 6 also acts to drive the second support arm 29 to rotate along the horizontal direction, the first support arm 15 and the second support arm 29 have the same motion direction, so that the first blocking block 24 on the first support arm 15 drives the first insertion block 26 and the second blocking block 30 on the second support arm Two symmetrical first grooves 33 are arranged in the first plug block 26, a plug 34 is formed between the two first grooves 33, a second groove 39 is arranged in the second plug block 31, the plug 34 corresponds to the second groove 39, so that the first plug block 26 is plugged with the second plug block 31, the two plug blocks are positioned between the movable contact 6 and the normally closed contact 8, when the contactor acts, the two plug blocks made of insulating materials move relatively and are plugged together, the function of rapidly cutting off the electric arc between the contacts is realized, when the contactor acts, in the downward movement process of the movable iron core 3, the same plug block structure between the movable contact 6 and the normally open contact 10 is changed into a separated state by plugging because of opposite movement directions, thereby ensuring the smooth closing of the contacts, when the electromagnet 2 is powered off, the reset spring 42 drives the movable iron core 3 to move upwards, the second shaft sleeve 14 and the third shaft sleeve 27 rotate reversely, drive first support arm 15 and second support arm 29 and carry out reverse motion, the inserted block is opened between movable contact 6 and normally closed contact 8, and the inserted block is closed between movable contact 6 and normally open contact 10, has realized the quick arc extinguishing effect between two sets of contacts, bilateral symmetry is provided with dog 19 in the shell 1, and dog 19 upper end is provided with fourth recess 20, and dog 19 lower extreme is provided with fifth recess 21, and sleeve 16 is installed at horizontal pole 5 both ends, installs first spring 18 in the sleeve 16, and kicking block 17 is installed outward to first spring 18, kicking block 17 and dog 19 sliding contact. When the contactor acts, the top block 17 slides into the fourth groove 20 or the fifth groove 21, and the pressure of the first spring 18 enables the cross rod 5 to generate certain resistance in the movement process, so that the malfunction of the contactor is prevented. A second connecting rod 40 is arranged between the movable contact 6 and the cross rod 5, the second connecting rod 40 is in sliding contact with the cross rod 5, second springs 41 are symmetrically arranged between the cross rod 5 and the movable contact 6, and a silver contact layer 25 is arranged on the surface of the movable contact 6. When the movable contact 6 contacts with the normally open contact 10 or the normally closed contact 8, the second spring 41 tightly presses the movable contact 6 on other contacts, so that the contact effect of the contacts is ensured, the silver contact layer 25 is arranged on the surface of the movable contact, the conductive effect can be effectively enhanced, the wear-resistant layers 38 are arranged on two sides of the first insertion block 26, the contact abrasion with the contacts in the insertion block action process is prevented, the function of quickly extinguishing arcs between contacts of the contactor is realized, and the performance of the contactor is improved.

In addition, because this example used grafting structure, grafting structure is easy not hard up. The inventors have designed a special locking structure for the present example to enhance the stability of the plugging structure. The middle of the plug 34 is provided with a hole 35, a third spring 37 is installed in the hole 35, locking heads 36 are symmetrically installed at two ends of the third spring 37, sixth grooves 22 are symmetrically arranged on the inner side of the second insert block 31, the locking heads 36 are in plug fit with the sixth grooves 22, when the first insert block 26 is in plug fit with the second insert block 31, the locking heads 36 at two ends of the third spring 37 slide into the second grooves 39 to compress the third spring 37, when the locking heads 36 slide to the positions of the sixth grooves 22, the third spring 37 pushes out the locking heads 36, and the locking heads 36 are clamped into the sixth grooves 22 to play a role in fixing and improve the stability of the plug structure.

The electromagnet, the shaft sleeve, the movable iron core and other devices used in the invention belong to mature prior art, and the specific structure thereof is not described in detail herein.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a contactor structure, includes shell (1), and electro-magnet (2), its characterized in that are installed to the bottom in shell (1): the movable iron core (3) is installed on the upper portion of the electromagnet (2), a first connecting rod (4) is installed on the movable iron core (3), a reset spring (42) is installed between the top end of the first connecting rod (4) and the shell (1), a cross rod (5) is transversely installed on the first connecting rod (4), moving contacts (6) are symmetrically installed on two sides of the cross rod (5), normally closed contact binding posts (7) are symmetrically installed on two sides of the upper portion of the shell (1), normally closed contacts (8) are installed in the shell (1) through the normally closed contact binding posts (7), the normally closed contacts (8) correspond to the moving contacts (6), normally open contact binding posts (9) are installed on the lower portion of the shell (1), normally open contacts (10) are installed in the shell (1), the normally open contacts (10) correspond to the moving contacts (6), supporting shafts (11) are symmetrically installed between the normally closed contact binding posts (7) and the normally, two support shafts (11) are positioned at two sides of a movable contact (6), first shaft sleeves (12) are symmetrically arranged at two ends of a cross rod (5), the first shaft sleeves (12) are sleeved on the support shafts (11), transmission cylinders (13) are arranged at two ends of the first shaft sleeves (12), the transmission cylinders (13) are sleeved on the support shafts (11) and are in sliding contact with the support shafts (11), second shaft sleeves (14) are symmetrically arranged at two ends of the transmission cylinders (13) on the support shafts (11) at the left side of the movable contact (6), third grooves (32) are obliquely arranged in the middle of the support shafts (11), first bulges (23) are arranged in the second shaft sleeves (14), the first bulges (23) are in sliding insertion connection with the third grooves (32), first support arms (15) are transversely arranged on the second shaft sleeves (14), first blocking blocks (24) are arranged at movable ends of the first support arms (15), and first insertion blocks (26) are arranged on the side faces of the first, two symmetrical first grooves (33) are arranged in the first insert block (26), a plug connector (34) is formed between the two first grooves (33), third shaft sleeves (27) are symmetrically arranged at two ends of a transmission cylinder (13) on a right side supporting shaft (11) of the movable contact (6), second protrusions (28) are arranged in the third shaft sleeves (27), the second protrusions (28) are in sliding insertion connection with third grooves (32) in the right side supporting shaft (11), second supporting arms (29) are transversely arranged on the third shaft sleeves (27), second stop blocks (30) are arranged at movable ends of the second supporting arms (29), second insert blocks (31) are arranged on the side faces of the second stop blocks (30), second grooves (39) are arranged in the second insert blocks (31), the plug connector (34) corresponds to the second grooves (39), and the first insert block (26) is in insertion connection fit with the second insert blocks (31).

2. The contactor structure of claim 1, wherein: both sides symmetry is provided with dog (19) in shell (1), and dog (19) upper end is provided with fourth recess (20), and dog (19) lower extreme is provided with fifth recess (21), and sleeve (16) are installed at horizontal pole (5) both ends, installs first spring (18) in sleeve (16), and kicking block (17) are installed outward to first spring (18), kicking block (17) and dog (19) sliding contact.

3. The contactor structure of claim 1, wherein: a second connecting rod (40) is arranged between the movable contact (6) and the cross rod (5), the second connecting rod (40) is in sliding contact with the cross rod (5), second springs (41) are symmetrically arranged between the cross rod (5) and the movable contact (6), and a silver contact layer (25) is arranged on the surface of the movable contact (6).

4. The contactor structure of claim 1, wherein: and wear-resistant layers (38) are arranged on two sides of the first insert block (26).