CN209895977U

CN209895977U - Waterproof electromagnetic switch with four pairs of contacts and with connection sequence

Info

Publication number: CN209895977U
Application number: CN201920618520.7U
Authority: CN
Inventors: 赵鲁建
Original assignee: BEIJING BADACHU AOBO SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: BEIJING BADACHU AOBO SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-01-03
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a waterproof type electromagnetic switch with four pairs of contacts and have switch-on order, which comprises a housin body, the casing body is connected with the power wiring end, be equipped with the iron core in the casing body, the casing body is worn out to the one end of iron core, be equipped with the coil between casing body and the iron core, the power wiring end is connected with the coil electricity, iron core one end movable sleeve is equipped with the rotor subassembly, rotor subassembly top is equipped with first output double-screw bolt and second output double-screw bolt, be equipped with two silver contacts and two tungsten steel contacts on the rotor subassembly, constitute four pairs of contacts with the contact of output double-screw bolt, the clearance between two pairs of tungsten steel contacts is the same, the clearance between two pairs of tungsten steel contacts is than the little 0.2-0.8mm in. The utility model has the advantages that: when the electromagnetic switch is disconnected, the gap between the silver contacts is large, so that the tungsten steel contacts are disconnected, the occurrence of ablation adhesion faults can be greatly reduced, and the output studs are arranged upwards in the axial direction, so that the size can be reduced, and the waterproof effect can be realized.

Description

Waterproof electromagnetic switch with four pairs of contacts and with connection sequence

Technical Field

The utility model relates to an electronic control device field particularly, relates to a waterproof type electromagnetic switch who has four pairs of contacts and has the switch-on order.

Background

Normally, the normal operation of the electromagnetic switch in the rated current generally cannot cause ablation, but the ablation of the contact often can be caused under the instantaneous rated current which is several times that of the electromagnetic switch, so that the electromagnetic switch fails. Most manufacturers in the field of the existing electromagnetic switches have no solution to the problem of contact ablation of the double-contact electromagnetic switch under the overload condition, and have the defects of large volume and low waterproof grade due to the fact that the existing structure is pulled downwards.

The electromagnetic switch contact can produce the arc at the moment of disconnection, and the temperature is very high, leads to the contact ablation. The ablation is easier when moisture enters.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned technical problem in the correlation technique, the utility model aims at providing a waterproof type electromagnetic switch who has four pairs of contacts and has the switch-on order, electromagnetic switch adopts four pairs of contacts, two pairs of tungsten steel contacts, two pairs of silver contacts, the order of switch-on is different, four pairs of contacts adopt series connection (bridge type) parallelly connected structure again, the tungsten steel contact is put through earlier afterwards and is broken off, the silver contact is put through after breaking earlier, the electromagnetic switch of series connection of this kind of contact switch-on order can be used to have impulse current's various occasions, voltage 12V-48V, electric current 1-300A, overcome in the current product not enough in the above-mentioned aspect.

The utility model aims at realizing through the following technical scheme: a waterproof electromagnetic switch with four pairs of contacts and a switching-on sequence comprises a shell body, wherein the shell body is connected with a power supply wiring end, an iron core is arranged in the shell body, one end of the iron core penetrates out of the shell body, a coil is arranged between the shell body and the iron core, the power supply wiring end is electrically connected with the coil, a movable sleeve at one end of the iron core is provided with a moving plate assembly, a first output stud and a second output stud are arranged above the moving plate assembly, the moving plate assembly is provided with two silver contacts and two tungsten steel contacts, the two silver contacts are a first contact and a second contact, the two tungsten steel contacts are a third contact and a fourth contact, a fifth contact is arranged above the first contact, a sixth contact is arranged above the second contact, a seventh contact is arranged above the third contact, and an eighth contact is arranged above the fourth contact, the fifth contact and the sixth contact are silver contacts, the seventh contact and the eighth contact are tungsten steel contacts, the fifth contact and the seventh contact are connected with the first output stud, the sixth contact and the eighth contact are connected with the second output stud, the first contact and the fifth contact are a first pair of silver contacts, the second contact and the sixth contact are a second pair of silver contacts, the third contact and the seventh contact are a first pair of tungsten steel contacts, the fourth contact and the eighth contact are a second pair of tungsten steel contacts, gaps between the two pairs of silver contacts are the same, gaps between the two pairs of tungsten steel contacts are the same, and the gaps between the two pairs of tungsten steel contacts are smaller than gaps between the two pairs of silver contacts by 0.2-0.8 mm.

Furthermore, the moving plate assembly comprises a first moving plate and a second moving plate which are perpendicular to each other, the two ends of the first moving plate are provided with the first contact and the second contact, and the two ends of the second moving plate are provided with the third contact and the fourth contact.

Further, the second movable piece is close to the shell body.

The utility model has the advantages that: when the electromagnetic switch is disconnected, the gap between the silver contacts is large, so the tungsten steel contacts are disconnected, the tungsten steel contacts are very ablation-resistant, the failure of ablation adhesion can be greatly reduced, and the output studs are arranged upwards in the axial direction, so that the size can be reduced, and the water can be prevented.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a waterproof electromagnetic switch having four pairs of contacts and having a turn-on sequence according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a waterproof electromagnetic switch having four pairs of contacts and having a turn-on sequence according to an embodiment of the present invention.

1. A first output stud; 2. a second output stud; 3. a seventh contact; 4. a second contact; 5. a third contact; 6. a second contact; 7. a fifth contact; 8. an eighth contact; 9. a first contact; 10. a fourth contact; 11. a first moving plate; 12. a second moving plate; 13. a housing body; 14. an iron core; 15. a power supply terminal; 16. and a coil.

Detailed Description

As shown in fig. 1-2, a waterproof electromagnetic switch with four pairs of contacts and a turn-on sequence according to an embodiment of the present invention includes a housing body 13, the housing body 13 is connected to a power terminal 15, an iron core 14 is disposed in the housing body 13, one end of the iron core 14 penetrates out of the housing body 13, a coil 16 is disposed between the housing body 13 and the iron core 14, the power terminal 15 is electrically connected to the coil 16, a movable sleeve at one end of the iron core 14 is provided with a rotor assembly, a first output stud 1 and a second output stud 2 are disposed above the rotor assembly, the rotor assembly is provided with two silver contacts and two tungsten steel contacts, the two silver contacts are a first contact 9 and a second contact 6, the two tungsten steel contacts are a third contact 5 and a fourth contact 10, a fifth contact 7 is disposed above the first contact 9, a sixth contact 4 is arranged above the second contact 6, a seventh contact 3 is arranged above the third contact 5, an eighth contact 8 is arranged above the fourth contact 10, the fifth contact 7 and the sixth contact 4 are silver contacts, the seventh contact 3 and the eighth contact 8 are tungsten steel contacts, the fifth contact 7 and the seventh contact 3 are connected with the first output stud 1, the sixth contact 4 and the eighth contact 8 are connected with the second output stud 2, the first contact 9 and the fifth contact 7 are a first pair of silver contacts, the second contact 6 and the sixth contact 4 are a second pair of silver contacts, the third contact 5 and the seventh contact 3 are a first pair of tungsten steel contacts, the fourth contact 10 and the eighth contact 8 are a second pair of tungsten steel contacts, gaps between the two pairs of silver contacts are the same, gaps between the two pairs of tungsten steel contacts are the same, and gaps between the two pairs of tungsten steel contacts are smaller than gaps between the two pairs of silver contacts by 0.2-0.8 mm.

In a specific embodiment of the present invention, the moving plate assembly includes a first moving plate 11 and a second moving plate 12 perpendicular to each other, the two ends of the first moving plate are provided with the first contact 9 and the second contact 6, and the two ends of the second moving plate are provided with the third contact 5 and the fourth contact 10.

In a specific embodiment of the present invention, the second moving plate 12 is close to the housing body 13.

When the device is used specifically, after the coil 16 is electrified, magnetic force is generated, the iron core 14 moves upwards, the iron core 14, the first moving plate 11 and the second moving plate 12 are assembled into a whole, so the first moving plate 11 and the second moving plate 12 also move upwards along with the iron core, the gap between the two pairs of tungsten steel contacts is smaller than the gap between the two pairs of silver contacts, finally, the two pairs of tungsten steel contacts are firstly connected, the tungsten steel contact 8 and the tungsten steel contact 10 are connected, the tungsten steel contact 3 and the tungsten steel contact 5 are connected, and then, the two pairs of silver contacts are connected again, the silver contact 4 and the silver contact 6 are connected, and the silver contact 7 and the silver contact 9 are connected; the silver contact 7 and the tungsten steel contact 3 are connected with the first output stud 1, and the silver contact 4 and the tungsten steel contact 8 are connected with the second output stud 2, so that the second output stud 2 is communicated with the first output stud 1 finally, an external load is connected, when the external load is disconnected, the two pairs of silver contacts are disconnected firstly, and the two pairs of tungsten steel contacts are disconnected later.

To sum up, with the aid of the above-mentioned technical scheme of the utility model, it is little through the clearance that makes between two pairs of tungsten steel contacts than the clearance between two pairs of silver contacts, can significantly reduce the trouble of ablation adhesion and take place, and output stud axial upwards arranges moreover, can reduce the volume, can be waterproof.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.

Claims

1. A waterproof type electromagnetic switch with four pairs of contacts and with a turn-on sequence, comprising a housing body (13), characterized in that: the shell body (13) is connected with a power supply wiring end (15), an iron core (14) is arranged in the shell body (13), one end of the iron core (14) penetrates out of the shell body (13), a coil (16) is arranged between the shell body (13) and the iron core (14), the power supply wiring end (15) is electrically connected with the coil (16), a movable sleeve at one end of the iron core (14) is provided with a moving plate component, a first output stud (1) and a second output stud (2) are arranged above the moving plate component, two silver contacts and two tungsten steel contacts are arranged on the moving plate component, the two silver contacts are a first contact (9) and a second contact (6), the two tungsten steel contacts are a third contact (5) and a fourth contact (10), a fifth contact (7) is arranged above the first contact (9), and a sixth contact (4) is arranged above the second contact (6), a seventh contact (3) is arranged above the third contact (5), an eighth contact (8) is arranged above the fourth contact (10), the fifth contact (7) and the sixth contact (4) are silver contacts, the seventh contact (3) and the eighth contact (8) are tungsten steel contacts, the fifth contact (7) and the seventh contact (3) are connected with the first output stud (1), the sixth contact (4) and the eighth contact (8) are connected with the second output stud (2), the first contact (9) and the fifth contact (7) are a first pair of silver contacts, the second contact (6) and the sixth contact (4) are a second pair of silver contacts, the third contact (5) and the seventh contact (3) are a first pair of tungsten steel contacts, the fourth contact (10) and the eighth contact (8) are a second pair of tungsten steel contacts, the gap between the two pairs of silver contacts is the same, and the gap between the two pairs of tungsten steel contacts is the same, the clearance between the two pairs of tungsten steel contacts is 0.2-0.8mm smaller than the clearance between the two pairs of silver contacts.

2. A watertight type electromagnetic switch having four pairs of contacts and having a turn-on sequence according to claim 1, characterized in that: the moving plate assembly comprises a first moving plate (11) and a second moving plate (12) which are perpendicular to each other, the two ends of the first moving plate are provided with the first contact (9) and the second contact (6), and the two ends of the second moving plate are provided with the third contact (5) and the fourth contact (10).

3. A watertight type electromagnetic switch having four pairs of contacts and having a turn-on sequence according to claim 2, characterized in that: the second moving plate (12) is close to the shell body (13).