CN217114248U

CN217114248U - Movable contact mechanism of electromagnetic relay

Info

Publication number: CN217114248U
Application number: CN202220132165.4U
Authority: CN
Inventors: 谭月月; 仇敏
Original assignee: Xi'an Hongfa Electric Appliance Co ltd
Current assignee: Xi'an Hongfa Electric Appliance Co ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-08-02
Anticipated expiration: 2032-01-18

Abstract

The utility model relates to a relay technical field discloses an electromagnetic relay movable contact mechanism, including shell, closing cap, electro-magnet, armature and extension spring, first logical groove has been seted up on the lateral wall at shell top, the closing cap is all installed at the upper and lower both ends of shell, the inside vertical baffle that is fixed with of shell, the inside electro-magnet that is fixed with of shell of baffle one side, axial welding has two pivots on the armature of baffle one side, the inside extension spring that is provided with of shell of baffle opposite side. The utility model discloses not only can effectively avoid the electro-magnet to release electromagnetic interference all around or receive outside electromagnetic interference to avoid the collision damage between electro-magnet, the armature, thereby the operation of this movable contact mechanism of comprehensive guarantee is stable, can change the contact of different thickness moreover, and can change the maximum tensile length of extension spring, prescribe a limit to the maximum height of armature tip simultaneously, thereby be applicable to different user demands.

Description

Movable contact mechanism of electromagnetic relay

Technical Field

The utility model relates to a relay technical field specifically is an electromagnetic relay movable contact mechanism.

Background

An electromagnetic relay generally comprises an electromagnet, an armature, a spring, a movable contact, a fixed contact and other structures, wherein the electromagnet is used for driving the armature, and the spring is used for resetting, so that the movable contact reciprocates relative to the fixed contact, and the functions of power-on contact and power-off disconnection are realized. It is usually applied to automatic control circuit, playing the role of automatic regulation, safety protection, converting circuit, etc.

However, in the practical application process, the periphery of the moving contact mechanism of the electromagnetic relay is lack of an electromagnetic shielding structure, and if other electromagnetic fields exist in the working range, the normal operation of the electromagnet can be interfered; and the movable contact often welds in armature tip, in the frequent break-make in-process of long-term, takes place situations such as contact wearing and tearing, armature bending, spring ageing easily, can't adjust or change according to actual need. In response to this situation, those skilled in the art have provided an electromagnetic relay moving contact mechanism.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electromagnetic relay movable contact mechanism to the operation that provides in solving above-mentioned background art is unstable, the subassembly is adjusted or is changed inconvenient problem.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an electromagnetic relay movable contact mechanism, includes shell, closing cap, electro-magnet, armature and extension spring, first logical groove has been seted up on the lateral wall at shell top, the closing cap is all installed at the upper and lower both ends of shell, the vertical baffle that is fixed with in inside of shell, and the top of baffle has seted up the second and has led to the groove, the inside electro-magnet that is fixed with of shell of baffle one side, and the inside armature that is provided with of shell above the electro-magnet to first logical groove, second logical groove are passed respectively at the both ends of armature, axial welding has two pivots on the armature of baffle one side, and the other end of pivot all rotates with the inside wall of shell to be connected, the inside extension spring that is provided with of shell of baffle opposite side, and the upper and lower both ends of extension spring have all articulated the fixing base to two fixing bases respectively with closing cap, armature fixed connection.

As a further aspect of the present invention: the shell, the sealing cover and the partition plate are made of anti-electromagnetic copper alloy materials, so that the electromagnet is prevented from releasing electromagnetic interference to the periphery or being subjected to external electromagnetic interference, and the moving contact mechanism is ensured to operate stably.

As a further aspect of the present invention: gaskets are bonded to the top end of the electromagnet and the bottom end of the armature, the gaskets are made of damping materials, the two gaskets are correspondingly arranged, and damage caused by rigid collision between the electromagnet and the armature is avoided.

As a further aspect of the present invention: two heavy grooves about the one end of armature is seted up, and all bonds in the heavy groove and have the contact, the later stage of being convenient for is changed to the surface of contact all is arc, ensures to contact effectively with the switch contact.

As a further aspect of the present invention: the inside welding-on of closing cap directly over the extension spring has the nut piece, and runs through in the nut piece and be provided with hexagon socket head cap screw to hexagon socket head cap screw's bottom and the top of armature other end contact each other for adjust the armature tip height of extension spring position department.

The utility model has the advantages that:

1. because the shell, the sealing cover and the partition plate are made of anti-electromagnetic copper alloy materials, the electromagnet is effectively prevented from releasing electromagnetic interference to the periphery or being subjected to external electromagnetic interference, and the gaskets made of damping materials are respectively bonded at the top end of the electromagnet and the bottom end of the armature, so that collision damage is avoided, and the stable operation of the movable contact mechanism is comprehensively ensured;

2. through bonding the contact of different thickness in two heavy grooves at armature one end to through the hexagon socket head cap screw in the spiral shell nut piece of twisting, make its tip be close to armature or contradict armature's the other end, with the biggest tensile length who changes the extension spring, inject the maximum height of armature tip simultaneously, thereby be applicable to different user demands.

Drawings

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

Fig. 1 is a schematic perspective view of a moving contact mechanism of an electromagnetic relay;

FIG. 2 is an overall schematic view of the armature of FIG. 1;

fig. 3 is a partial schematic view of the armature of fig. 1.

In the figure: 1. a housing; 2. a first through groove; 3. sealing the cover; 4. a partition plate; 5. a second through groove; 6. an electromagnet; 7. a gasket; 8. an armature; 9. a rotating shaft; 10. sinking a groove; 11. a contact; 12. a tension spring; 13. a fixed seat; 14. a nut block; 15. and (4) an inner hexagon bolt.

Detailed Description

The following description will be clearly and completely described with reference to the drawings in the embodiment of the present invention, and please refer to fig. 1 to 3, the embodiment of the present invention is as follows:

an electromagnetic relay moving contact mechanism, which is shown in figures 1-3: comprises a shell 1, a sealing cover 3, an electromagnet 6, an armature 8 and a tension spring 12, wherein a first through groove 2 is arranged on one side wall of the top of the shell 1, the sealing cover 3 is arranged at the upper end and the lower end of the shell 1, a partition plate 4 is vertically fixed in the shell 1, and the top of the clapboard 4 is provided with a second through groove 5, an electromagnet 6 is fixed inside the shell 1 at one side of the clapboard 4, an armature 8 is arranged inside the shell 1 above the electromagnet 6, two ends of the armature 8 respectively pass through the first through groove 2 and the second through groove 5, two rotating shafts 9 are axially welded on the armature 8 at one side of the clapboard 4, the other end of the rotating shaft 9 is rotatably connected with the inner side wall of the shell 1, a tension spring 12 is arranged in the shell 1 at the other side of the clapboard 4, and the upper and lower both ends of extension spring 12 have all been articulated and have been connect fixing base 13 to two fixing bases 13 are respectively with closing cap 3, armature 8 fixed connection.

In fig. 1 and 2: the shell 1, the seal cover 3 and the partition plate 4 are made of anti-electromagnetic copper alloy materials, so that the electromagnet 6 is prevented from releasing electromagnetic interference to the periphery or being subjected to external electromagnetic interference, and the moving contact mechanism is ensured to operate stably; the gasket 7 is bonded on the top end of the electromagnet 6 and the bottom end of the armature 8, the gasket 7 is made of damping materials, and the two gaskets 7 are correspondingly arranged to avoid damage caused by rigid collision between the electromagnet 6 and the armature 8.

In fig. 2 and 3: an upper sinking groove 10 and a lower sinking groove 10 are formed in one end of the armature 8, contacts 11 are bonded in the sinking grooves 10, and therefore later-stage replacement is facilitated, and the outer surfaces of the contacts 11 are arc-shaped, so that effective contact with a switch contact is guaranteed; a nut block 14 is welded in the sealing cover 3 right above the tension spring 12 in an embedded mode, an inner hexagon bolt 15 penetrates through the nut block 14, the bottom end of the inner hexagon bolt 15 is in contact with the top of the other end of the armature 8, and the height of the end portion of the armature 8 at the position of the tension spring 12 is adjusted.

The utility model discloses a theory of operation is: firstly, the shell 1, the sealing cover 3 and the partition plate 4 are made of anti-electromagnetic copper alloy materials, electromagnetic interference released by the electromagnet 6 to the periphery or external electromagnetic interference can be effectively avoided, when the electromagnet 6 is powered on to operate, one end of the armature 8 rotates downwards by taking the rotating shaft 9 as the center, and then the gaskets 7 made of damping materials are respectively bonded at the top end of the electromagnet 6 and the bottom end of the armature 8, so that collision damage between the electromagnet 6 and the armature 8 can be avoided, and the stable operation of the movable contact mechanism is comprehensively guaranteed;

in addition, the upper and lower sunken grooves 10 at one end of the armature 8 are respectively adhered with contacts 11 with different thicknesses so as to be suitable for external contacts with different intervals, and the end part of the inner hexagonal bolt 15 in the nut block 14 is screwed to be close to the armature 8 or abut against the other end of the armature 8 so as to change the maximum stretching length of the tension spring 12 and limit the maximum height of the end part of the armature 8, so that the spring is further suitable for different use requirements.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A movable contact mechanism of an electromagnetic relay comprises a shell (1), a sealing cover (3), an electromagnet (6), an armature (8) and a tension spring (12), and is characterized in that a first through groove (2) is formed in one side wall of the top of the shell (1), the sealing covers (3) are mounted at the upper end and the lower end of the shell (1), a partition plate (4) is vertically fixed in the shell (1), a second through groove (5) is formed in the top of the partition plate (4), the electromagnet (6) is fixed in the shell (1) on one side of the partition plate (4), the armature (8) is arranged in the shell (1) above the electromagnet (6), two ends of the armature (8) respectively penetrate through the first through groove (2) and the second through groove (5), two rotating shafts (9) are axially welded on the armature (8) on one side of the partition plate (4), and the other ends of the rotating shafts (9) are rotatably connected with the inner side wall of the shell (1), the shell (1) on the other side of the partition board (4) is internally provided with a tension spring (12), the upper end and the lower end of the tension spring (12) are respectively connected with a fixing seat (13) in a hanging mode, and the two fixing seats (13) are respectively fixedly connected with the sealing cover (3) and the armature (8).

2. An electromagnetic relay moving contact mechanism according to claim 1, characterized in that the housing (1), the cover (3) and the partition (4) are made of anti-electromagnetic copper alloy.

3. The moving contact mechanism of the electromagnetic relay according to claim 1, characterized in that the top of the electromagnet (6) and the bottom of the armature (8) are both bonded with gaskets (7), and the gaskets (7) are both made of damping material, and the two gaskets (7) are correspondingly arranged.

4. The moving contact mechanism of the electromagnetic relay according to claim 1, characterized in that one end of the armature (8) is provided with an upper and a lower sinking grooves (10), contacts (11) are adhered in the sinking grooves (10), and the outer surfaces of the contacts (11) are all arc-shaped.

5. The moving contact mechanism of the electromagnetic relay is characterized in that a nut block (14) is welded in the sealing cover (3) right above the tension spring (12), a hexagon socket head cap screw (15) penetrates through the nut block (14), and the bottom end of the hexagon socket head cap screw (15) is in contact with the top of the other end of the armature (8).