CN210692448U

CN210692448U - Prevent beating tooth electromagnetic switch protective structure

Info

Publication number: CN210692448U
Application number: CN201922320287.7U
Authority: CN
Inventors: 陈孙艺
Original assignee: Fujian Yida Edrive Co ltd
Current assignee: Fujian Yida Edrive Co ltd
Priority date: 2019-12-21
Filing date: 2019-12-21
Publication date: 2020-06-05
Anticipated expiration: 2029-12-21

Abstract

The utility model discloses a prevent beating tooth electromagnetic switch protective structure, include: the static terminal is fixed in the terminal sleeve, is sleeved outside the iron core and is movably connected with the iron core, two groups of symmetrical conducting strips are arranged at the end part of the iron core, two groups of electric conductors corresponding to the conducting strips are respectively arranged on the static terminal, and the electric conductors are in surface contact with the conducting strips; the position that corresponds two sets of electric conductors in the terminal sleeve sets up movable contact mechanism and stationary contact respectively, movable contact mechanism includes: the electromagnetic disc comprises an electromagnetic disc, a magnet sheet and a conductive contact, wherein the conductive contact is fixedly connected with the magnet sheet. The utility model discloses a contact control electromagnetic switch return circuit break-make of scalable stroke keeps the contact state all the time of iron core and terminal, has solved the problem of the unable closed contact of contact because of the inaccurate result in of iron core stroke, improves electromagnetic switch and uses the reliability.

Description

Prevent beating tooth electromagnetic switch protective structure

Technical Field

The utility model relates to an electromagnetic switch specifically is a prevent beating tooth electromagnetic switch protective structure.

Background

The electromagnetic switch is a combination of an electromagnet and a switch. When the electromagnet coil is electrified, electromagnetic attraction is generated, the movable iron core pushes or pulls the switch contact to be closed, and therefore the controlled circuit is switched on. The working principle is that electromagnetic attraction is generated after the coil is electrified to move the movable iron core, so that on one hand, the transmission meshing mechanism is pulled to enable the pinion of the starter to move forwards to be meshed with the flywheel gear ring of the engine, on the other hand, the switch contact is pushed to be connected, the direct current motor is electrified to operate, and the engine is driven to start.

In order to solve the problem that gear beating and the like occur when the electromagnetic switch starter gear is meshed with a flywheel gear ring, the starter and the electromagnetic switch reduce the problem of gear damage caused by mistaken touch starting by using a driving protection circuit comprising a relay, a rectifier and the like. However, under the influence of long-term use and assembly accuracy of the electromagnetic switch iron core, the problem that the power cannot be supplied because the iron core terminal is not contacted with the stationary contact terminal due to the short stroke may occur, and the electromagnetic switch with the condition can only be replaced and is time-consuming.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent beating tooth electromagnetic switch protective structure 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:

an anti-toothing electromagnetic switch protective structure, comprising: the transformer comprises an iron core, a static terminal and a terminal sleeve, wherein the iron core is arranged in an iron core sleeve, the static terminal and the terminal sleeve are positioned at one end of the iron core, a driving coil and a position-keeping coil are respectively arranged on the iron core sleeve, and the driving coil and the position-keeping coil are both connected into a driving circuit;

the static terminal is fixed in the terminal sleeve, is sleeved outside the iron core and is movably connected with the iron core, two groups of symmetrical conducting strips are arranged at the end part of the iron core, two groups of electric conductors corresponding to the conducting strips in position are respectively arranged on the static terminal, and the electric conductors are contacted with the surfaces of the conducting strips;

the position that corresponds two sets of electric conductors in the terminal sleeve sets up movable contact mechanism and stationary contact respectively, movable contact mechanism includes: the electromagnetic disc is fixedly arranged on one side of the magnet sheet, a coil is spirally wound on the electromagnetic disc, and the coil is connected with a bit retention coil or a driving coil in series through a lead.

As a further aspect of the present invention: the stationary contact includes a conductive contact that is secured to the terminal sleeve and is in contact with a set of electrical conductors.

As a further aspect of the present invention: the movable contact mechanism also comprises a reset elastic piece which is arranged between the conductive contact and the terminal sleeve.

As a further aspect of the present invention: the reset elastic piece is a pressure spring.

As a further aspect of the present invention: the conducting strip is strip-shaped and is fixedly arranged along the axial direction of the iron core.

As a further aspect of the present invention: the electric conductor and the electric conduction sheet can both adopt graphite materials.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a contact control electromagnetic switch return circuit break-make of scalable stroke keeps the contact state all the time of iron core and terminal, has solved the problem of the unable closed contact of contact because of the inaccurate result in of iron core stroke, improves electromagnetic switch and uses the reliability.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic view of a cross-sectional structure of the middle terminal sleeve of the present invention.

Fig. 4 is a schematic cross-sectional view of the end of the core according to the present invention.

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.

Referring to fig. 1 to 4, in an embodiment of the present invention, an anti-tooth-hitting electromagnetic switch protection structure includes: the electromagnetic switch comprises an iron core 13, a static terminal 5 and a terminal sleeve 4, wherein the iron core 13 is arranged in an iron core sleeve 1, the static terminal 5 and the terminal sleeve 4 are positioned at one end of the iron core 13, a driving coil 12 and a position-keeping coil 11 are respectively arranged on the iron core sleeve 1, and the driving coil 12 and the position-keeping coil 11 are both connected in series in an electromagnetic switch driving circuit (not shown in the figure) and are respectively used for driving the iron core 13 to move and keeping the iron core 13;

the static terminal 5 is fixed in the terminal sleeve 4, the static terminal 5 is sleeved outside the iron core 13 and is movably connected with the iron core 13, two groups of symmetrical conducting strips 131 are arranged at the end position of the iron core 13, the conducting strips 131 are arranged along the axial direction of the iron core 13, two groups of electric conductors 51 corresponding to the conducting strips 131 are respectively arranged on the static terminal 5, and protrusions in contact with the surfaces of the conducting strips 131 are arranged on the electric conductors 51;

the movable contact mechanism 3 and the fixed contact 6 are respectively arranged in the terminal sleeve 4 corresponding to the positions of the two groups of conductors 51, wherein the movable contact mechanism 3 comprises: the electromagnetic switch comprises an electromagnetic disc 31, a magnet sheet 32, a pressure spring 33 and a conductive contact 34, wherein the conductive contact 34 is fixedly connected with the magnet sheet 32, the pressure spring 33 is arranged between the conductive contact 34 and a terminal sleeve 4, the electromagnetic disc 31 is fixedly arranged on one side of the magnet sheet 32, a coil is spirally wound on the electromagnetic disc 31 and is connected with a bit-retention coil 11 or a driving coil 12 in series through a lead, after the bit-retention coil 11 or the driving coil 12 is electrified, the coil of the electromagnetic disc 31 is simultaneously electrified to generate a magnetic field and generates a repulsive force with the magnet sheet 32, the magnet sheet 32 and the conductive contact 34 are driven to move, the conductive contact 34 moves to be in contact with a conductive body 51, an electrified loop is formed between an iron core 13 and the conductive contact 34, the switch contact is electrified, and after the switch contact is powered on, the contact.

The static contact 6 also comprises a conductive contact 34, the conductive contact 34 is fixed on the terminal sleeve 4 and keeps contact with a group of conductive bodies 51, the two groups of conductive contacts 34 are respectively electrically connected to the electromagnetic switch driving circuit, the iron core 13 to the two groups of conductive contacts 34 form a loop with the driving circuit after being electrified, and the loop is controlled by the movable contact mechanism 3 only, so that the structural complexity can be reduced.

The conductor 51 and the conducting strip 131 can be made of graphite materials, the structure is similar to a brush structure, the graphite materials have excellent wear resistance and low resistance, and can be used for a long time and keep reliable contact, and the iron core 13 and the conductor 51 are connected at any time, so that the formation of a loop is not influenced even if the stroke of the iron core 13 is inaccurate, and the reliability of the electromagnetic switch is improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An anti-toothing electromagnetic switch protective structure, comprising: the transformer comprises an iron core (13) arranged in an iron core sleeve (1), a static terminal (5) and a terminal sleeve (4) which are positioned at one end of the iron core (13), wherein a driving coil (12) and a position-keeping coil (11) are respectively arranged on the iron core sleeve (1), and the driving coil (12) and the position-keeping coil (11) are both connected into a driving circuit;

the method is characterized in that: the static terminal (5) is fixed in the terminal sleeve (4), the static terminal (5) is sleeved outside the iron core (13) and is movably connected with the iron core (13), two groups of symmetrical conducting strips (131) are arranged at the end position of the iron core (13), two groups of electric conductors (51) corresponding to the conducting strips (131) in position are respectively arranged on the static terminal (5), and the electric conductors (51) are in surface contact with the conducting strips (131);

the position that corresponds two sets of electric conductors (51) in terminal sleeve pipe (4) sets up moving contact mechanism (3) and stationary contact (6) respectively, moving contact mechanism (3) include: the electromagnetic disc comprises an electromagnetic disc (31), a magnet flake (32) and a conductive contact (34), wherein the conductive contact (34) is fixedly connected with the magnet flake (32), the electromagnetic disc (31) is fixedly positioned on one side of the magnet flake (32), a coil is spirally wound on the electromagnetic disc (31), and the coil is connected with a position-keeping coil (11) or a driving coil (12) in series through a lead.

2. The anti-toothing electromagnetic switch protective structure according to claim 1, characterized in that: the stationary contact (6) comprises an electrically conductive contact (34), and the electrically conductive contact (34) is fixed to the terminal sleeve (4) and is held in contact with a set of electrical conductors (51).

3. The anti-toothing electromagnetic switch protective structure according to claim 1, characterized in that: the moving contact mechanism (3) also comprises a reset elastic piece which is arranged between the conductive contact (34) and the terminal sleeve (4).

4. The anti-toothpunching electromagnetic switch protective structure according to claim 3, characterized in that: the reset elastic piece is a pressure spring (33).

5. The anti-toothing electromagnetic switch protective structure according to claim 1, characterized in that: the conducting strip (131) is strip-shaped and is fixedly arranged along the axial direction of the iron core (13).

6. The anti-toothing electromagnetic switch protective structure according to claim 1 or 5, characterized in that: the conductive body (51) and the conductive sheet (131) can both adopt graphite materials.