CN215183753U

CN215183753U - Modular vacuum magnetic starter

Info

Publication number: CN215183753U
Application number: CN202121241887.5U
Authority: CN
Inventors: 曹贵旺
Original assignee: Jingdezhen Zhenkong Electrical Appliance Co ltd
Current assignee: Jingdezhen Zhenkong Electrical Appliance Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-12-14
Anticipated expiration: 2031-06-04

Abstract

The utility model discloses a modular vacuum magnetic starter relates to the magnetic starter field, including the installation casing, electromagnetic mechanism, armature, the vacuum tube, tension spring, two movable contacts and two stationary contacts, still include support and pulling force adjustment mechanism, the horizontal fixed plate that sets up of inside below fixedly connected with of installation casing, the fixed upper end one side that sets up at the fixed plate of support, electromagnetic mechanism is fixed to be set up in the fixed plate top, rotatable swinging arms downside left end fixed connection in tension spring's upper end and the support, the fixed setting of pulling force adjustment mechanism is on the fixed plate and is connected with tension spring's lower extreme, tension adjustment mechanism can adjust tension spring's pulling force. The utility model discloses be convenient for carry out the pulling force to the inside tension spring of contactor in the magnetic starter and adjust to the effect that the swing arm just reversely rotated when circular telegram and outage is satisfied to the pulling force size that makes tension spring, realizes that the inside of contactor is opened and close.

Description

Modular vacuum magnetic starter

Technical Field

The utility model relates to a magnetic force starter field, in particular to modular vacuum magnetic force starter.

Background

The magnetic starter is composed of a steel stamping shell, a steel bottom plate, an alternating current contactor, a thermal relay and corresponding wiring, a start-stop button switch is matched during use, a manual signal cable is correctly connected, when a start button is pressed, an alternating current contactor coil arranged in the magnetic starter is electrified, an armature iron drives a contact group to be closed, an electric appliance (generally a motor) power supply is switched on, meanwhile, self-locking is carried out through an auxiliary contact, when a stop button is pressed, the internal alternating current contactor coil is not electrified, the contact is disconnected, the electric appliance power supply is switched off and unlocked.

At present, the closure of the contactor internal contact in the magnetic starter makes the electro-magnet core have magnetism through coil circular telegram, thereby adsorb armature, armature drives the movable contact and rotates, thereby realize the closure of contact, and when the coil outage, electromagnetic core loses magnetism, drive armature antiport through tension spring, make the contact separation, however, in the contactor, tension spring's elasticity is fixed, tension spring's pulling force is difficult too big, also difficult undersize, avoid influencing electromagnetic core to the attraction of armature, consequently more loaded down with trivial details when selecting tension spring, need install the attempt, and tension spring is after long-time the use, pulling force can change, thereby influence the pulling effect to armature easily, influence the internal circuit of contactor and open and close.

Therefore, it is necessary to invent a modular vacuum magnetic starter to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modular vacuum magnetic starter to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the modular vacuum magnetic starter comprises an installation shell, an electromagnetic mechanism, an armature, a vacuum tube, a tension spring, two movable contacts, two stationary contacts, a support and a tension adjusting mechanism, wherein a transversely arranged fixed plate is fixedly connected to the lower part inside the installation shell, the support is fixedly arranged on one side of the upper end of the fixed plate, the electromagnetic mechanism is fixedly arranged above the fixed plate, the upper end of the tension spring is fixedly connected with the left end of the lower side of a swinging rod which can rotate in the support, the tension adjusting mechanism is fixedly arranged on the fixed plate and connected with the lower end of the tension spring, the tension adjusting mechanism can adjust the tension of the tension spring, the electromagnetic mechanism is fixedly arranged in the middle of the upper end of the fixed plate, the armature is fixedly arranged at the right end of the lower side rod wall of the swinging rod and can attract the electromagnetic mechanism, and the right end of the swinging rod is fixedly connected with the vacuum tube through a connecting rod, the two movable contacts are fixedly connected with the lower side of the vacuum tube, the two static contacts are fixedly arranged in the mounting shell through the mounting plate, the two static contacts can be respectively contacted with the two movable contacts, and the lower ends of the two static contacts are fixedly connected with external leads.

Preferably, the tension adjusting mechanism includes regulating plate, an internal thread section of thick bamboo and adjusting bolt, regulating plate and tension spring's lower extreme fixed connection, the upper end of an internal thread section of thick bamboo and the lower extreme fixed connection of regulating plate, the upper end of regulating plate pass the fixed plate through antifriction bearing and with internal thread section of thick bamboo threaded connection, the telescopic link of two symmetric distributions of lower extreme fixedly connected with of regulating plate, two the lower extreme of telescopic link all with fixed plate fixed connection, the bar opening has been seted up to the front side below of installation casing.

Preferably, the support includes bracing piece and swinging arms, the lower extreme and the fixed plate fixed connection of bracing piece, the swinging arms transversely sets up the top at the fixed plate, and the pole wall middle part of swinging arms rotates through pivot and the pole wall top of bracing piece to be connected.

Preferably, the upper inner side wall of the mounting shell is fixedly connected with a stop block, the lower end of the stop block is fixedly connected with an insulating rubber pad, and the insulating rubber pad can be abutted against the right end of the upper side wall of the swing rod.

Preferably, electromagnetic mechanism includes electromagnetic core and coil, electromagnetic core is fixed to be set up in the upper end of fixed plate, electromagnetic core is located armature under, the coil winding is in electromagnetic core's the outside.

The utility model discloses a technological effect and advantage:

1. through the mutual matching of the tension spring, the tension adjusting mechanism, the bracket, the electromagnetic mechanism, the armature, the vacuum tube, the two movable contacts and the two stationary contacts, when a coil in the electromagnetic mechanism is electrified, the electromagnetic iron core has magnetism so as to attract the armature, the armature drives the swinging rod to rotate, the swinging rod rotates to drive the two movable contacts to rotate downwards so as to enable the two movable contacts to be respectively contacted with the two stationary contacts so as to switch on a circuit, when the coil is powered off, the electromagnetic iron core loses magnetism and cannot attract the armature, the tension spring applies downward tension to the right end of the swinging rod, the swinging rod drives the two movable contacts to rotate upwards so as to enable the two movable contacts to be separated from the two stationary contacts, the adjusting bolt is rotated to enable the internal thread cylinder to move upwards and downwards, the internal thread cylinder drives the adjusting plate to move upwards and downwards, and the adjusting plate can pull the lower end of the tension spring, thereby stretch tension spring, be convenient for adjust tension spring's pulling force, make tension spring's pulling force size can satisfy and exert pulling force rotation to the swinging arms, and satisfy that the electromagnetic core attracts armature contact when the coil circular telegram.

Drawings

Fig. 1 is a schematic front structural view of the present invention;

fig. 2 is a schematic front sectional structure of the present invention;

fig. 3 is an enlarged schematic structural diagram of a portion a in fig. 2 according to the present invention.

In the figure: 1. installing a shell; 2. an armature; 3. a vacuum tube; 4. a tension spring; 5. a movable contact; 6. a stationary contact; 7. a fixing plate; 8. a swing lever; 9. a connecting rod; 10. mounting a plate; 11. connecting a lead externally; 12. an adjusting plate; 13. an internal threaded barrel; 14. adjusting the bolt; 15. a telescopic rod; 16. a support bar; 17. a stopper; 18. an insulating rubber pad; 19. an electromagnetic core; 20. and a coil.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

The utility model provides a modular vacuum magnetic starter as shown in figures 1-3, which comprises an installation shell 1, an electromagnetic mechanism, an armature 2, a vacuum tube 3, a tension spring 4, two movable contacts 5 and two stationary contacts 6, and also comprises a support and a tension adjusting mechanism, wherein the lower part inside the installation shell 1 is fixedly connected with a fixed plate 7 which is transversely arranged, the support is fixedly arranged at one side of the upper end of the fixed plate 7, the electromagnetic mechanism is fixedly arranged above the fixed plate 7, the upper end of the tension spring 4 is fixedly connected with the left end of the lower side of a swing rod 8 which can rotate in the support, the tension adjusting mechanism is fixedly arranged on the fixed plate 7 and is connected with the lower end of the tension spring 4, the tension adjusting mechanism can adjust the tension of the tension spring 4, the electromagnetic mechanism is fixedly arranged in the middle part of the upper end of the fixed plate 7, the armature 2 is fixedly arranged at the right end of the lower side rod wall of the swing rod 8 and can attract the electromagnetic mechanism, the right end of the swing rod 8 is fixedly connected with the vacuum tube 3 through the connecting rod 9, the two movable contacts 5 are fixedly connected with the lower side of the vacuum tube 3, the two fixed contacts 6 are fixedly arranged inside the installation shell 1 through the installation plate 10, the two fixed contacts 6 can be respectively contacted with the two movable contacts 5, the lower ends of the two fixed contacts 6 are fixedly connected with the external lead 11, and the installation shell 1 is integrally and fixedly installed inside the shell of the magnetic starter.

As shown in fig. 2 and 3, the tension adjusting mechanism includes an adjusting plate 12, an internal thread cylinder 13 and an adjusting bolt 14, the adjusting plate 12 is fixedly connected with the lower end of the tension spring 4, the upper end of the internal thread cylinder 13 is fixedly connected with the lower end of the adjusting plate 12, the upper end of the adjusting plate 12 passes through the fixing plate 7 through the rolling bearing and is in threaded connection with the internal thread cylinder 13, the lower end of the adjusting plate 12 is fixedly connected with two symmetrically distributed telescopic rods 15, the lower ends of the two telescopic rods 15 are fixedly connected with the fixing plate 7, a strip-shaped opening is formed below the front side of the mounting housing 1, the internal thread cylinder 13 can move up and down by rotating the adjusting bolt 14, the internal thread cylinder 13 drives the adjusting plate 12 to move up and down, the adjusting plate 12 can pull the lower end of the tension spring 4, so as to stretch the tension spring 4, the tension of the tension spring 4 can be adjusted conveniently, and the tension of the tension spring 4 can rotate by applying tension to the swinging rod 8, and the requirement of attracting and contacting the armature 2 when the electromagnetic mechanism is electrified is met.

As shown in FIG. 2, the support comprises a support rod 16 and a swing rod 8, the lower end of the support rod 16 is fixedly connected with the fixed plate 7, the swing rod 8 is transversely arranged above the fixed plate 7, and the middle part of the rod wall of the swing rod 8 is rotatably connected with the upper part of the rod wall of the support rod 16 through a rotating shaft.

As shown in fig. 2, a stopper 17 is fixedly connected to the upper inner side wall of the mounting case 1, an insulating rubber pad 18 is fixedly connected to the lower end of the stopper 17, the insulating rubber pad 18 can be abutted against the right end of the upper side wall of the swing rod 8, when the electromagnetic mechanism is powered off, the swing rod 8 rotates under the tension of the tension spring 4, and the right end of the swing rod 8 rotates upwards, so that the stopper 17 and the insulating rubber pad 18 can limit the rotation angle of the swing rod 8, and the situation that the armature 2 is separated from the attraction range of the electromagnetic mechanism due to the overlarge rotation angle of the swing rod 8 is avoided.

As shown in fig. 2, the electromagnetic mechanism includes an electromagnetic core 19 and a coil 20, the electromagnetic core 19 is fixedly disposed at the upper end of the fixing plate 7, the electromagnetic core 19 is located right below the armature 2, and the coil 20 is wound on the outer side of the electromagnetic core 19.

The utility model discloses the theory of operation:

when the coil 20 in the electromagnetic mechanism is powered on, the electromagnetic iron core 19 has magnetism, so that the armature 2 is attracted, the armature 2 drives the swing rod 8 to rotate, the swing rod 8 rotates to drive the two movable contacts 5 to rotate downwards, so that the two movable contacts 5 are respectively contacted with the two fixed contacts 6, so that a circuit is connected, when the coil 20 is powered off, the electromagnetic iron core 19 loses magnetism and cannot attract the armature 2, the tension spring 4 applies downward tension to the right end of the swing rod 8, the swing rod 8 drives the two movable contacts 5 to rotate upwards, so that the two movable contacts 5 are separated from the two fixed contacts 6, and the circuit is disconnected;

rotating adjusting bolt 14 and can making an internal thread section of thick bamboo 13 reciprocate, an internal thread section of thick bamboo 13 drives regulating plate 12 and reciprocates, regulating plate 12 can be pulled the lower extreme of tension spring 4 to tension spring 4, be convenient for adjust tension spring 4's pulling force, make tension spring 4's pulling force size can satisfy and exert the pulling force to swinging arms 8 and rotate, and satisfy that electromagnetic core 19 attracts armature 2 when coil 20 circular telegram and contact.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. Modular vacuum magnetic starter, including installation casing (1), electromagnetic mechanism, armature (2), vacuum tube (3), tension spring (4), two movable contact (5) and two stationary contact (6), its characterized in that: the vacuum tube vacuum pump further comprises a support and a tension adjusting mechanism, a fixing plate (7) which is transversely arranged is fixedly connected to the lower portion inside the mounting shell (1), the support is fixedly arranged on one side of the upper end of the fixing plate (7), the electromagnetic mechanism is fixedly arranged above the fixing plate (7), the upper end of the tension spring (4) is fixedly connected with the left end of the lower side of a swinging rod (8) which can rotate in the support, the tension adjusting mechanism is fixedly arranged on the fixing plate (7) and is connected with the lower end of the tension spring (4), the tension adjusting mechanism can adjust the tension of the tension spring (4), the electromagnetic mechanism is fixedly arranged in the middle of the upper end of the fixing plate (7), the armature (2) is fixedly provided with the right end of the lower side rod wall of the swinging rod (8) and can attract the electromagnetic mechanism, and the right end of the swinging rod (8) is fixedly connected with the vacuum tube (3) through a connecting rod (9), the two movable contacts (5) are fixedly connected with the lower side of the vacuum tube (3), the two static contacts (6) are fixedly arranged in the mounting shell (1) through mounting plates (10), the two static contacts (6) can be respectively contacted with the two movable contacts (5), and the lower ends of the two static contacts (6) are fixedly connected with external leads (11).

2. The modular vacuum magnetic starter of claim 1 wherein: the tension adjusting mechanism comprises an adjusting plate (12), an internal thread cylinder (13) and an adjusting bolt (14), the adjusting plate (12) is fixedly connected with the lower end of a tension spring (4), the upper end of the internal thread cylinder (13) is fixedly connected with the lower end of the adjusting plate (12), the upper end of the adjusting plate (12) penetrates through a rolling bearing to pass through a fixing plate (7) and is in threaded connection with the internal thread cylinder (13), two telescopic rods (15) are symmetrically distributed on the lower end of the adjusting plate (12), the lower ends of the telescopic rods (15) are fixedly connected with the fixing plate (7), and a bar-shaped opening is formed in the lower side of the front side of the mounting shell (1).

3. The modular vacuum magnetic starter of claim 1 wherein: the support includes bracing piece (16) and swinging arms (8), the lower extreme and fixed plate (7) fixed connection of bracing piece (16), swinging arms (8) transversely set up the top at fixed plate (7), and the pole wall top of pivot and bracing piece (16) is passed through in the middle part of the pole wall of swinging arms (8) and is rotated and be connected.

4. The modular vacuum magnetic starter of claim 1 wherein: the upper inner side wall of the mounting shell (1) is fixedly connected with a stop block (17), the lower end of the stop block (17) is fixedly connected with an insulating rubber pad (18), and the insulating rubber pad (18) can be abutted against the right end of the upper side wall of the swing rod (8).

5. The modular vacuum magnetic starter of claim 1 wherein: electromagnetic mechanism includes electromagnetic core (19) and coil (20), electromagnetic core (19) are fixed to be set up in the upper end of fixed plate (7), electromagnetic core (19) are located armature (2) under, coil (20) winding is in the outside of electromagnetic core (19).