CN104795281A - Electromagnetic relay - Google Patents

Abstract

The invention relates to an electromagnetic relay comprising a substrate. An electromagnet unit, a plugging board, a movable terminal and a fixed terminal are arrayed on the substrate parallelly; the electromagnet unit comprises a yoke and a coil fixed to the yoke; an armature is provided with a rotary shaft inside and is fixed to the yoke through the rotary shaft; the plugging board is fixed to the substrate in a swinging manner and comprises a first terminal and a second terminal, the first terminal contacts with the armature, and the second terminal contacts with the movable terminal; the movable terminal contacts with the fixed terminal. The electromagnet unit generates magnetic force after being powered on to drive the armature to rotate around the rotary shaft and perform mechanical actions, the second terminal of the plugging board contacts with the movable terminal to drive the movable terminal to contact with the fixed terminal, and the circuit is conductive. The armature adopts the fixed rotary shaft as a supporting point, and the transmission force reduction caused by the armature position displacement can be avoided during rotation.

Description

A kind of electromagnetic relay

Technical field

The present invention relates to a kind of electromagnetic relay.

Background technology

Electromagnetic relay generally includes busbar, and it is for connecting connector and electronic unit.In electromagnetic relay use field, the electromagnetic system of most of electromagnetic relay is all made up of parts such as coil, yoke, armature, coil two ends by connecting voltage and generating an electromagnetic field and magnetic flux, final system armature and make electromagnetic relay produce mechanical action.Because armature needs long-time action, if armature set-up mode is improper, easy generation action has some setbacks, fulcrum skew, contact is not right, the problem such as cause electric parameter unstable, thus causes the anti-seismic performance of product to decline and the problem such as mechanical structure is unreliable.

Summary of the invention

In order to solve the problems of the technologies described above, the invention provides a kind of structure simple, driving force is large, can the electromagnetic relay of accurate control circuit.

The present invention adopts following technical scheme, provides a kind of electromagnetic relay, comprises substrate, described substrate is set up in parallel electromagnet unit, plate, removable terminal and fixed terminal; Electromagnet unit comprises yoke and is fixed to the coil of yoke; One armature, inside establishes a rotating shaft, is fixed in yoke by rotating shaft is rotatable; Described rotating shaft terminal is fixed on electromagnetic relay body; Plate, swingable is fixed on substrate, and described plate comprises the first termination and the second termination, and the first termination contacts with armature, the second termination and removable termination contact; Also comprise one and be fixed on buffering suface on substrate, buffering suface is placed between plate and electromagnet unit, and described buffering suface is provided with the through hole passed for the first termination.

The present invention also provides a kind of electromagnetic relay, comprises substrate, described substrate is set up in parallel electromagnet unit, plate, removable terminal and fixed terminal; Electromagnet unit comprises yoke and is fixed to the coil of yoke; One armature, inside establishes a rotating shaft, is fixed in yoke by rotating shaft is rotatable; Described rotating shaft terminal is fixed on electromagnetic relay body; Plate, swingable is fixed on substrate, and described plate comprises the first termination and the second termination, and the first termination and armature are by ball-joint anatomical connectivity, the second termination and removable termination contact.

The invention has the beneficial effects as follows: produce magnetic force after electromagnet unit energising, band moving armature rotates around rotating shaft and produces mechanical action, makes the second termination of plate move removable terminal with removable terminal contact zones and contacts with fixed terminal, circuit turn-on.Described armature for the strong point with fixing rotating shaft, can prevent armature position from offseting and driving force is reduced in the process of rotation.

Accompanying drawing explanation

Figure 1 shows that the structural representation of electromagnetic relay of the present invention;

Figure 2 shows that another execution mode structural representation of electromagnetic relay of the present invention.

Label declaration:

Bottom, substrate 1 electromagnet unit 2 yoke 201 coil 202 magnetic pole piece 203 electronic unit splicing ear 3 armature 4 upper end 401 402 removable terminal 5 rotating shaft 6 buffering suface 7 plate 8 first termination 801 second termination 802 fixed terminal 9 connector 901 ball-joint structure 10

Embodiment

By describing technology contents of the present invention, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.

See Fig. 1, a kind of electromagnetic relay is provided, comprise connector 901 and electronic unit splicing ear 3, the end face that connector 901 is provided in relay body forms with it one, electronic unit splicing ear 3 is given prominence to from the bottom surface of relay body, connector 901 comprises a terminal, and terminal and electronic unit splicing ear 3 are connected to the fixed terminal 9 be arranged in relay body.Electronic unit splicing ear 3 and fixed terminal can be constructed by same component or separate member.Electronic unit is connected to electronic unit splicing ear 3.

Be the sectional view of electromagnetic relay shown in Fig. 1, comprise substrate 1, described substrate 1 is set up in parallel electromagnet unit 2, plate 8, removable terminal 5 and fixed terminal 9; Electromagnet unit 2 comprises yoke 201 and is fixed to the coil 202 of yoke 201; One armature 4, inside establishes a rotating shaft, is fixed in yoke 201 by rotating shaft 6 is rotatable, (not shown) on the sidewall that the two ends of this rotating shaft 6 are fixed to relay body, and armature is located by the fixing rotating shaft of application; Described armature 4 is bent to the shape of broken line substantially, the upper end-face edge of the yoke 201 of electromagnet unit 2 closes on armature supporting point position place and fixes a hinge spring (not shown), and hinge spring can provide a power-assisted to make armature upper end reset to tram when electromagnet unit is not energized.What plate 8 was swingable is fixed on substrate 1, and plate 8 can be swung to the direction of armature 4 or removable terminal 5, and described plate 8 comprises the first termination 801 and the second termination, termination 802, first contacts with armature 4, and the second termination contacts with removable terminal 5; Removable terminal 5 is oppositely arranged with fixed terminal, and the two can contact with each other; A part for the L shape part that fixed terminal vertically extends corresponds to the terminal of connector 901.

In above-mentioned execution mode, when not applying voltages to electromagnet unit 2, a part of armature 4 that bottom 402 is attached is promoted by the elastic force of hinge spring (not shown).Therefore, the attracted surface of the upper end 401 of armature 4 is separated with the magnetic pole piece 203 of electromagnet unit 2, and now plate 8 does not contact with armature 4 and remains static, and removable terminal 5 is same with fixed terminal is in released state.When applying voltages to electromagnet unit 2 in this condition, electromagnet unit 2 is in "on" position, and the attracted surface of the upper end 401 of armature 4 attracted to electromagnet unit 2 and makes armature 4 with fixing rotating shaft 6 for a spot wobble, promote removable terminal 5 to contact with fixed terminal, removable terminal 5 and fixed terminal are in conducting state thus simultaneously.Described armature 4 for the strong point with fixing rotating shaft 6, can prevent armature 4 position from offseting and driving force is reduced in the process of rotation, can prevent that armature 4 action from having some setbacks, fulcrum skew, contact be not right, cause the problems such as electric parameter instability.

In order to improve the anti-seismic performance of product, ensure the reliability of product mechanical structure, a buffering suface also fixed by described electromagnetic relay substrate, and buffering suface 7 is placed between plate 8 and electromagnet unit 2, and described buffering suface 7 is provided with the through hole passed for the first termination.Time seat direction of plate 8 arranges buffering suface 7 and limits the first termination and slides in through hole, through hole is utilized to guide the first termination 801 to prevent the first termination dislocation motion, and utilizing buffering suface 7 can also realize cushioning the function of plate 8 times seats, preventing plate 8 from producing the performance that larger concussion affects device when returning seat.

As mentioned above, according to a kind of electromagnetic relay of the first exemplary embodiment, the electromagnetic relay of present embodiment comprises substrate 1, described substrate 1 is set up in parallel electromagnet unit 2, plate 8, removable terminal 5 and fixed terminal; Electromagnet unit 2 comprises yoke 201 and is fixed to the coil 202 of yoke 201; One armature 4, inside establishes a rotating shaft, is fixed on yoke 201 upper end-face edge by rotating shaft 6 is rotatable; Described rotating shaft terminal is fixed on electromagnetic relay body; Plate 8, swingable is fixed on substrate 1, and described plate 8 comprises the first termination and the second termination, and the first termination is connected by drive mechanism with armature 4, and as adopted ball-joint structure 10 to connect, the second termination contacts with removable terminal 5; Removable terminal 5 contacts with fixed terminal.In this execution mode, described armature 4 and plate 8 realize mechanical force transmission by ball-joint structure is set, as shown in Figure 2, ball in the middle of driving when armature 4 swings up and down time planar moves, moved substantially in the plane in first termination of plate 8, the mechanical impact force of armature 4 and plate 8 can be reduced, the mechanical failure preventing direct percussion from causing, the impact that the direct impulsive force avoiding percussion to produce produces hinge spring.

The embodiment of electromagnetic relay of the present invention is only described in upper; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (2)

1. an electromagnetic relay, is characterized in that: comprise substrate, described substrate is set up in parallel electromagnet unit, plate, removable terminal and fixed terminal;

Electromagnet unit comprises yoke and is fixed to the coil of yoke; One armature, inside establishes a rotating shaft, is fixed on yoke upper end-face edge by rotating shaft is rotatable; Described rotating shaft terminal is fixed on electromagnetic relay body;

Plate, swingable is fixed on substrate, and described plate comprises the first termination and the second termination, and the first termination contacts with armature, the second termination and removable termination contact;

Also comprise one and be fixed on buffering suface on substrate, buffering suface is placed in described buffering suface between plate and electromagnet unit and is provided with the through hole passed for the first termination.

2. an electromagnetic relay, is characterized in that: comprise substrate, described substrate is set up in parallel electromagnet unit, plate, removable terminal and fixed terminal;

Electromagnet unit comprises yoke and is fixed to the coil of yoke; One armature, inside establishes a rotating shaft, is fixed on yoke upper end-face edge by rotating shaft is rotatable; Described rotating shaft terminal is fixed on electromagnetic relay body;

Plate, swingable is fixed on substrate, and described plate comprises the first termination and the second termination, and the first termination and armature are by ball-joint anatomical connectivity, the second termination and removable termination contact.