CN200962407Y

CN200962407Y - Electromagnetic switch

Info

Publication number: CN200962407Y
Application number: CN 200620047256
Authority: CN
Inventors: 李子平
Original assignee: 郑春开
Current assignee: Kedu Electric Co Ltd
Priority date: 2006-10-26
Filing date: 2006-10-26
Publication date: 2007-10-17
Anticipated expiration: 2016-10-26

Abstract

The utility model relates to an electromagnetic switch. The utility model is separately provided with an additional control device used for control the formation of the coil circuit on the basis of the basic structure of the electromagnetic switch. The additional control device comprises an elastic contact and a contact chip. When the elastic contact contacts with the contact chip, the coil forms a loop. In the additional control device, the action of the elastic contact can be controlled by the armature or the conducting depressed button and also can be controlled by the movable contact frame. The electromagnetic switch can thoroughly play a role in the low-voltage protection, simultaneously having the advantages of good against shock and dust-proof property, more safe and reliable in work and small volume and the like and adapting to any forms of electromagnetic switches or other switch apparatus, in particular to a more strong vibration operating environment.

Description

Electromagnetic switch

Technical field

The utility model relates to a kind of electromagnetic switch, especially the improvement of electromagnetic assembly structure.

Background technology

Existing such as the electromagnetic switch of using on the lathe, switch inside mainly comprises electromagnetic assembly and contact assembly; Electromagnetic assembly mainly comprises armature, yoke, coil, iron core, short-circuited conducting sleeve; Contact assembly mainly comprises action contact frame, moving contact, moving contact, fixed contact, fixed contact.The operation program of this electromagnetic switch is: when pressing conducting button (green button), drive armature motion, armature directly causes the sound contacting.The electromagnetic switch of this structure is under undervoltage condition, as long as pin green button always, switch still is in on-position, does not have the function of under-voltage protection.In addition, existing similar electromagnetic switch is the automatic adhesive of meeting under the environment of stronger vibration, the equipment of being controlled can be powered suddenly like this, has serious potential safety hazard.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of rational in infrastructure, uses more safe and reliable electromagnetic switch, to overcome the above-mentioned defective that existing electromagnetic switch exists.

For solving the problems of the technologies described above, the technical scheme that the utility model adopted is that the additional controlling organization that the control coil loop forms independently is set on the basis of existing electromagnetic switch basic structure in addition, described additional controlling organization is made up of spring contact and contact chip, when spring contact contacted with contact chip, coil formed the loop.

In the above-mentioned additional controlling organization, the action of spring contact can be by armature or conducting button control; Also can control by action contact frame.Action at spring contact is controlled occasion by conducting button or armature, one end and the spring contact of coil join, and the other end and contact chip join, and down transport in the process of merit with the conducting button when pressing conducting button or armature, spring contact contacts with contact chip, and coil forms the loop.Control occasion in the spring contact action by action contact frame, the two ends of coil are separately fixed at the two ends of contact chip, disconnect in the middle of the contact chip of coil one end, when action contact frame drive spring contact up moves, with the contact chip two ends conducting that disconnects, coil forms the loop.

The main feature of the electromagnetic switch of said structure is: disconnection or connection with spring contact and contact chip are example by armature or conducting button control, in the process that armature down moves with the conducting button, spring contact contacted with contact chip before this, coil forms the loop, armature continues down motion, but armature can not contact iron core all the time but maintain a certain distance in whole process, can not directly cause the switch moving contact to contact with fixed contact, and switch does not have conducting.When voltage reaches setting, the automatic adhesive armature in magnetic field that coil produces, moving contact and fixed contact are connected simultaneously, and switch conduction forms the loop.Not directly conducting of switch main contact when being Push switch conducting button (green button), but conducting additional control contact (contact chip), main contact is the magnetic force adhesive armature that produces by coil and being switched on.

Adopt the electromagnetic switch of said structure to overcome the shortcoming of the moving button control of the direct armrest of connection of the sound contact of existing electromagnetic switch; can be under the present situation that is not more than existing similar volume of switch; can thoroughly play under-voltage protection; have advantages such as against shock, anti-dust performance is good, work is more safe and reliable, volume is little simultaneously; be applicable on any type of electromagnetic switch or other switchgear, be particularly useful for the operational environment of stronger vibrations.

Description of drawings

Fig. 1 is the overall structure dismounting figure of the utility model first embodiment.

Fig. 2 is the overall structure schematic diagram of the utility model first embodiment.

Fig. 3 is that the A of Fig. 2 is to view.

Fig. 4 is the overall structure schematic perspective view of the utility model second embodiment.

Fig. 5 is the overall structure schematic perspective view of the utility model the 3rd embodiment.

Among the figure, 1, cut-off push button, 2, the conducting button, 3, stage clip, 4, panel, 5, spring contact, 6, contact chip, 7, armature, 8, contact pilotage, 9, reseting pressuring spring, 10, action contact frame, 11, moving contact, 12, moving contact, 13, the moving contact stage clip, 14, fixed contact, 15, fixed contact, 16, base, 17, yoke, 18, coil rack, 19, coil, 20, iron core, 21, short-circuited conducting sleeve, 22, sealing ring.

Embodiment

As Fig. 1, Fig. 2, first embodiment shown in Figure 3 is the execution mode of a kind of action of spring contact by armature control.This electromagnetic switch comprises electromagnetic assembly and contact assembly, electromagnetic assembly comprises spring contact 5, contact chip 6, armature 7, contact pilotage 8, yoke 17, coil rack 18, coil 19, iron core 20, short-circuited conducting sleeve 21, one end and the spring contact 5 of coil 19 join, and the other end and contact chip 6 join; Contact assembly comprises action contact frame 10, moving contact 11, moving contact 12, moving contact stage clip 13, fixed contact 14, fixed contact 15, fixed contact 14 is fixed in the base 16, armature 7 places an end on the yoke 17 to be inserted into the hole of action contact frame 10, the other end places spring contact 5 times, under the active force of reseting pressuring spring 9, armature 7 is upturned, and spring contact 5 and contact chip 6 are separated, and keeping a fixed range, same moving contact 11 also separates and keeps a fixed range with fixed contact 15.This electromagnetic switch armature 7 tops are provided with conducting button (green button) 2, and the top of action contact frame 10 is provided with cut-off push button (red button) 1, and conducting button 2 and cut-off push button 1 all are in the switch topmost position under the effect of stage clip 3.Described spring contact can be made up of contact and stage clip, also can adopt the spring contact of one.

When pressing conducting button (green button) 2; armature 7 is in the process of down moving with conducting button 2; spring contact 5 contacted with contact chip 6 before this; coil 19 forms the loop; armature 7 continues down to move with conducting button 2; but armature 7 can not contact iron core 20 all the time but maintain a certain distance in whole process; this moment, moving contact 11 also maintained a certain distance with fixed contact 15; switch does not have conducting; when voltage reaches the value of under-voltage protection defined; the automatic adhesive armature 7 in magnetic field that coil 19 produces, thus moving contact 11 and fixed contact 15 are connected.Opposite when if voltage does not reach the value of defined, the magnetic force that coil 19 produces can not be automatically with armature 7 adhesives, in addition under switch is in attracting state, when voltage step-down during in under-voltage protection voltage, because of the not enough switch of magnetic force also can automatic disconnection.When switch is in conducting state, pressing the disconnection button presses (red button) 1 urgent action contact frame 10 to move down, force moving contact 11 to separate, under the situation of internal structure inefficacy (as spring malfunctioning or sound point burn), press this button and can make the mandatory disconnection of switch simultaneously with fixed contact 15.

Second embodiment as shown in Figure 4 is that a kind of action of spring contact 5 is by conducting button (green button) 2 directly actuated execution modes.This embodiment is that with the difference of first embodiment conducting button (green button) 2 directly contacts with spring contact 5, when pressing conducting button (green button) 2, spring contact 5 is contacted with contact chip 6, and coil forms the loop.

The 3rd embodiment as shown in Figure 5 is the execution mode of a kind of action of spring contact 5 by action contact frame 10 controls.The difference of this embodiment and first embodiment is that the action of spring contact 5 is driven by action contact frame 10, spring contact 5 is connected with action contact frame 10, the two ends of coil 19 are separately fixed at the two ends of contact chip 6, disconnect in the middle of the contact chip 6 of coil 19 1 ends, when action contact frame 10 drive spring contacts 5 up move, with the two ends conducting of the contact chip 6 that disconnects, coil 19 forms loops.This structure also can be made spring contact 5 and be fixed therein the end that power supply is introduced, and drives spring contact 5 actions when action contact frame 10 actions, and coil 19 forms the loop.

Claims

1, a kind of electromagnetic switch, comprise electromagnetic assembly and contact assembly, electromagnetic assembly comprises armature (7), yoke (17), coil (19), iron core (20), short-circuited conducting sleeve (21), contact assembly comprises action contact frame (10), moving contact (11), moving contact (12), fixed contact (14), fixed contact (15), it is characterized in that described coil (19) is provided with independently additional controlling organization, described additional controlling organization is made up of spring contact (5) and contact chip (6), when spring contact (5) and contact chip (6) when contacting, coil (19) forms the loop.

2, electromagnetic switch according to claim 1, the action that it is characterized in that described spring contact (5) is controlled by armature (7), one end of coil (19) and spring contact (5) join, the other end and contact chip (6) join, armature (7) places the last end of yoke (17) to be connected with moving contact frame (10), the other end places under the spring contact (5), under the active force of reseting pressuring spring (9), armature (7) is upturned, and spring contact (5) and contact chip (6) are separated, and keep a fixed range, in the process that armature (7) down moves, spring contact (5) contacts with contact chip (6), and coil (19) forms the loop.

3, electromagnetic switch according to claim 1, it is characterized in that also comprising conducting button (2), the action of described spring contact (5) is directly controlled by conducting button (2), one end of coil (19) and spring contact (5) join, the other end and contact chip (6) join, and conducting button (2) contacts with spring contact (5), when pressing conducting button (2), spring contact (5) contacts with contact chip (6), and coil (19) forms the loop.

4, electromagnetic switch according to claim 1, the action that it is characterized in that described spring contact (5) is controlled by action contact frame (10), spring contact (5) is connected with action contact frame (10), the two ends of coil (19) are separately fixed at the two ends of contact chip (6), disconnect in the middle of the contact chip (6) of coil (19) one ends, when action contact frame (10) drives spring contact (5) when up moving, with contact chip (6) the two ends conducting that disconnects, coil (19) formation loop.

5,, it is characterized in that described spring contact (5) is made up of contact and stage clip according to claim 1 or 2 or 3 or 4 described electromagnetic switch.