CN213424896U

CN213424896U - Static iron core of powder metallurgy magnetic switch

Info

Publication number: CN213424896U
Application number: CN202022757517.9U
Authority: CN
Inventors: 陆贤文; 濮威; 王奕恒
Original assignee: Changshu Hua De Powder Metallurgy Co ltd
Current assignee: Changshu Hua De Powder Metallurgy Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-06-11
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a static iron core of a powder metallurgy magnetic switch, which comprises a disc-shaped main body, wherein the disc-shaped main body is provided with a hollow guide post on the front surface of the disc-shaped main body, a through hole of the guide post penetrates through the disc-shaped main body, and the bottom of the through hole is in a horn shape; at the root of the guide post, an annular groove is arranged on the disk-shaped main body, an annular step is arranged between the annular groove and the root of the guide post, two positioning grooves are arranged on the side wall of the annular groove, and the two positioning grooves are symmetrically arranged; the edge of the disc-shaped main body is provided with two notches, and a slotted hole is formed in the disc-shaped main body between the two notches; on the front surface of the disc-shaped main body, two notches and the slotted hole are provided with sunk grooves; and the annular groove and the two positioning grooves are respectively provided with a reinforcing part on the reverse side of the disc-shaped main body, and the reinforcing parts protrude out of the surface of the disc-shaped main body. The utility model discloses the location is accurate, and the leakproofness is good, avoids impurity such as dust to get into magnetic switch.

Description

Static iron core of powder metallurgy magnetic switch

Technical Field

The utility model relates to a quiet iron core of powder metallurgy magnetic switch belongs to powder metallurgy and makes technical field.

Background

The magnetic switch is a switch controlled by an electromagnet as the name implies, namely a combination of the electromagnet and the 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 magnetic switch of the starter is an important component for controlling the starting of an automobile, and has the function of completing the starting and stopping of the starter by utilizing the magnetic force generated by electrifying the coil and the elastic force of the return spring to enable the iron core to reciprocate in the guide pipe under the control of an automobile key door.

The magnetic switch is of an encapsulation structure, and the shell is connected and encapsulated with the positioning plate. The existing positioning plate is sheet-shaped, although firm connection can be realized, the sealing performance is poor, impurities such as dust and the like can easily enter the positioning plate, and the performance and the service life of the magnetic switch are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can pinpoint, the quiet iron core of powder metallurgy magnetic switch that the leakproofness is good.

In order to achieve the technical purpose, the technical scheme of the utility model is that:

the static iron core of the powder metallurgy magnetic switch comprises a disc-shaped main body, wherein a hollow guide column is arranged on the disc-shaped main body on the front surface of the disc-shaped main body, a through hole of the guide column penetrates through the disc-shaped main body, and the bottom of the through hole is in a horn shape; at the root part of the guide post, an annular groove is arranged on the disc-shaped main body, an annular step is arranged between the annular groove and the root part of the guide post, a first positioning groove and a second positioning groove are arranged on the side wall of the annular groove, and the first positioning groove and the second positioning groove are symmetrically arranged; the disc-shaped main body is provided with a first notch and a second notch at the edge of the disc-shaped main body, and a slotted hole is formed between the first notch and the second notch and can prevent burrs from being generated in a die gap; the front surface of the disc-shaped main body is provided with a first sinking groove and a second sinking groove; and the annular groove, the first positioning groove and the second positioning groove are provided with reinforcing parts on the reverse surface of the disc-shaped main body, and the reinforcing parts protrude out of the surface of the disc-shaped main body.

The bottom surfaces of the first positioning groove and the second positioning groove are lower than the bottom surface of the annular groove.

The guide post is sleeved with a spring of the magnetic switch, the end part of the guide post is positioned in the annular groove, the first positioning groove and the second positioning groove on the side wall of the annular groove are used for installing a fixing piece, and the fixing piece is limited to the spring and avoids the rotation of the spring.

The outer edge of the reinforcing part is provided with a chamfer.

The reverse side of the disc-shaped body is also provided with a plurality of bulges.

The utility model discloses the location is accurate, on guaranteeing firmly connected basis, adopts powder metallurgy one-time preparation, and its leakproofness is good, can avoid impurity such as dust to get into magnetic switch, influences magnetic switch's performance and life.

Drawings

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

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

Fig. 2 is a schematic view of the cross-sectional structure a-a of fig. 1 according to the present invention.

Fig. 3 is a schematic view of the cross-sectional structure D-D in fig. 1 according to the present invention.

Fig. 4 is a schematic view of the reverse structure of the present invention.

Detailed Description

As shown in fig. 1-4, the static iron core of the powder metallurgy magnetic switch comprises a disc-shaped main body 1, wherein the disc-shaped main body 1 is provided with a hollow guide post 2 on the front surface of the disc-shaped main body 1, a through hole 21 of the guide post 2 penetrates through the disc-shaped main body 1, and the bottom of the through hole 21 is in a horn shape 22.

At 2 roots of guide post, be provided with annular groove 3 on the disk main part 1, annular step 31 has between 2 roots of annular groove 3 and guide post, be provided with first constant head tank 32 and second constant head tank 33 on the 3 lateral walls of annular groove, first constant head tank 32 and the symmetrical setting of second constant head tank 33, first constant head tank 32 bottom surface and second constant head tank 33 bottom surface all are less than 3 bottoms of annular groove.

The guide post 2 is put to magnetic switch's spring sleeve, and its tip is located annular groove 3, and first constant head tank 32 and second constant head tank 33 on the 3 lateral walls of annular groove are used for installing the mounting, and the mounting is spacing to the spring, avoids the spring rotatory.

At the edge of the disc-shaped body 1, the disc-shaped body 1 is provided with a first notch 51 and a second notch 52, and between the first notch 51 and the second notch 52, the disc-shaped body 1 is provided with a slot 53, and the slot 53 can avoid burrs from a mold gap.

The first notch 51 and the second notch 52 are provided with a first sinking groove 61 on the front surface of the disc-shaped main body 1, and the slot hole 53 is provided with a second sinking groove 62; the first notch 51 and the second notch 52 are connected with the shell, so that looseness between the shell and the shell is avoided, external water or dust and the like are prevented from entering the shell, and the first sinking groove 61 can be firmly positioned while the installation space is saved.

On the reverse side of the disc-shaped main body 1, the annular groove 3, the first positioning groove 32 and the second positioning groove 33 are all provided with a reinforcing part 8, the reinforcing part 8 protrudes out of the surface of the disc-shaped main body 1, and the outer edge of the reinforcing part 8 is provided with a chamfer 81. The reverse side of the disc-shaped body 1 is also provided with a plurality of protrusions 7.

The annular groove 3, the first positioning groove 32 and the second positioning groove 33 are reinforced by the reinforcing part 8, the shapes of the annular groove 3, the first positioning groove 32 and the second positioning groove 33 are consistent, and the reinforcing part is assisted by a plurality of protrusions 7 so that other parts can be fixed on the reverse side of the disc-shaped main body 1.

The above-mentioned embodiment does not limit the utility model in any way, and all the technical solutions that adopt the mode of equivalent replacement or equivalent transform to obtain all fall within the protection scope of the utility model.

Claims

1. The static iron core of the powder metallurgy magnetic switch is characterized by comprising a disc-shaped main body (1), wherein the disc-shaped main body (1) is provided with a hollow guide column (2) on the front surface of the disc-shaped main body (1), a through hole (21) of the guide column (2) penetrates through the disc-shaped main body (1), and the bottom of the through hole (21) is in a horn shape; an annular groove (3) is formed in the disc-shaped main body (1) at the root of the guide post (2), an annular step (31) is arranged between the annular groove (3) and the root of the guide post (2), a first positioning groove (32) and a second positioning groove (33) are formed in the side wall of the annular groove (3), and the first positioning groove (32) and the second positioning groove (33) are symmetrically arranged; at the edge of the disc-shaped main body (1), the disc-shaped main body (1) is provided with a first notch (51) and a second notch (52), and the disc-shaped main body (1) is provided with a slotted hole (53) between the first notch (51) and the second notch (52); the first notch (51) and the second notch (52) are provided with a first sinking groove (61) on the front surface of the disc-shaped main body (1), and the slotted hole (53) is provided with a second sinking groove (62); and on the reverse side of the disc-shaped main body (1), the annular groove (3), the first positioning groove (32) and the second positioning groove (33) are provided with reinforced parts (8), and the reinforced parts (8) protrude out of the surface of the disc-shaped main body (1).

2. The static iron core of the powder metallurgy magnetic switch according to claim 1, wherein: the bottom surfaces of the first positioning groove (32) and the second positioning groove (33) are lower than the bottom surface of the annular groove (3).

3. The static iron core of the powder metallurgy magnetic switch according to claim 1, wherein: the outer edge of the reinforcing part (8) is provided with a chamfer (81).

4. The static iron core of the powder metallurgy magnetic switch according to claim 1, wherein: the reverse side of the disc-shaped body (1) is also provided with a plurality of bulges (7).