A magnetic latching relay with same-layer structure

Abstract

The invention discloses a magnetic latching relay with a same-layer structure, comprising a substrate, two rows of pins on one side of the substrate, the front row of pins comprising a first contact lead-out pin, a second contact lead-out pin, a first control pin, and a third contact lead-out pin, and the back row of pins comprising a fourth contact lead-out pin, a second control pin, a fifth contact lead-out pin, and a sixth contact lead-out pin; a pair of first static spring assemblies are provided on the first and fourth contact lead-out pins, a pair of second static spring assemblies are provided on the third and sixth contact lead-out pins, and a first moving spring assembly and a second moving spring assembly are provided on the fifth and second contact lead-out pins; the cantilever ends of the first and second moving spring assemblies are located between the pair of first and second static spring assemblies; an electromagnetic assembly is provided on the other side of the substrate, and the first and second control pins are electrically connected to the electromagnetic assembly; and an armature assembly is provided inside the electromagnetic assembly. All components of the relay are provided on the substrate, thereby effectively reducing the overall height of the relay.

Description

Technical Field

[0001] The invention belongs to the technical field of relay manufacturing, and in particular relates to a magnetic latching relay with a same-layer structure. Background Art

[0002] Existing small sealed magnetic latching relays generally have a layered design for input, transmission and output. In order to meet the product electrical parameters, relays with this structure are generally relatively tall in height. However, the product cannot be used normally in some specific installation spaces with smaller heights. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention provides a magnetic latching relay with a same-layer structure. The technical problem to be solved by the present invention is achieved by the following technical solutions:

[0004] A magnetic latching relay with a same-layer structure comprises a substrate, wherein two rows of pins are sealed and inserted on one side of the substrate, wherein the front row of pins comprises, from left to right, a first contact lead-out pin, a second contact lead-out pin, a first control pin, and a third contact lead-out pin, and the rear row of pins comprises, from left to right, a fourth contact lead-out pin, a second control pin, a fifth contact lead-out pin, and a sixth contact lead-out pin; a pair of first static spring sheet assemblies are fixed vertically opposite to the ends of the first contact lead-out pin and the fourth contact lead-out pin, and the ends of the third contact lead-out pin and the sixth contact lead-out pin are fixed vertically opposite to the ends of the third contact lead-out pin and the sixth contact lead-out pin. A pair of second static reed assemblies are fixed, and the ends of the fifth contact lead-out pin and the second contact lead-out pin are respectively vertically fixed with a first dynamic reed assembly and a second dynamic reed assembly; the cantilever end of the first dynamic reed assembly is located between the pair of first static reed assemblies, and the first dynamic contact on the first dynamic reed assembly is located between the first static contacts on the pair of first static reed assemblies, and the cantilever end of the second dynamic reed assembly is located between the pair of second static reed assemblies, and the second dynamic contact on the second dynamic reed assembly is located between the second static contacts on the pair of second static reed assemblies;

[0005] An electromagnetic assembly is provided on the other side of the substrate, and the first control pin and the second control pin are electrically connected to the electromagnetic assembly; an armature assembly is hinged on the inner side of the electromagnetic assembly, and the first push rod at the left end of the armature assembly is arranged behind the cantilever end of the first movable spring assembly, and the second push rod at the right end of the armature assembly is arranged behind the cantilever end of the second movable spring assembly.

[0006] Furthermore, the electromagnetic component includes a first yoke, a second yoke, a coil assembly, an iron core, a first connecting plate and a bracket; the coil assembly is mounted on the iron core, and the first yoke and the second yoke are fixed at both ends of the iron core, the upper ends of the first yoke and the second yoke are fixedly connected by a first connecting plate and then fixed to the bracket, and the bracket is fixed on the other side of the substrate; the coil assembly is respectively connected to the first control pin and the second control pin.

[0007] Further, the armature assembly includes a first armature, a second armature, a first magnet, a second magnet, the first push rod and a second push rod; the first armature and the second armature are vertically oppositely arranged on both sides of the first yoke and the second yoke, the first magnet and the second magnet are fixed between the first armature and the second armature, and a hinge shaft is vertically provided between the first magnet and the second magnet; the second connecting plates are fixedly mounted on the upper and lower ends of the hinge shaft, and the upper and lower ends of the first armature and the second armature are connected and fixed by the second connecting plate; the two ends of the hinge shaft are respectively hinged to the first connecting plate and the inner side of the bracket; the first push rod and the second push rod are respectively fixed to the left and right ends of the outer side of the first armature.

[0008] Further, the first static spring assembly is composed of a first L-shaped static spring and the first static contact, one end of the first L-shaped static spring is vertically fixed to the ends of the first contact lead-out pin and the fourth contact lead-out pin, and the other end of the first L-shaped static spring is vertically fixed to the first static contact;

[0009] The second static spring assembly is composed of a second L-shaped static spring and the second static contact, one end of the second L-shaped static spring is vertically fixed to the ends of the third contact lead-out pin and the sixth contact lead-out pin, and the other end of the second L-shaped static spring is vertically fixed to the second static contact.

[0010] Further, the first movable spring assembly includes a first L-shaped movable spring and the first movable contact, one end of the first L-shaped movable spring is vertically fixed to the end of the fifth contact lead-out pin, and the other end of the first L-shaped movable spring is vertically fixed with the first movable contact;

[0011] The second moving spring assembly includes a second L-shaped moving spring and the second moving contact, one end of the second L-shaped moving spring is vertically fixed to the end of the second contact lead pin, and the other end of the second L-shaped moving spring is vertically fixed with the second moving contact.

[0012] Beneficial effects of the present invention:

[0013] 1. The electromagnetic assembly, armature assembly, static spring assembly and dynamic spring assembly of the present invention are all arranged on the substrate, thereby effectively reducing the overall height of the relay and reducing the restrictions on the use of the relay due to the installation space at a specific height;

[0014] 2. The electromagnetic system adopts a single coil, "I"-shaped armature assembly and double working air gap magnetic circuit structure, which can effectively reduce the volume of the product input part.

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the appearance structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention after removing the cover;

[0018] Figure 3 for Figure 2 A schematic diagram of a top view structure;

[0019] Figure 4 It is a schematic diagram of the structure of the electromagnetic assembly and the armature assembly.

[0020] Description of reference numerals:

[0021] 1-base plate; 2-pin; 3-first static spring assembly; 4-second static spring assembly; 5-first dynamic spring assembly; 6-second dynamic spring assembly; 7-electromagnetic assembly; 8-armature assembly; 9-housing; 2-1-first contact lead pin; 2-2-second contact lead pin; 2-3-first control pin; 2-4-third contact lead pin; 2-5-fourth contact lead pin; 2-6-second control pin; 2-7-fifth contact lead pin; 2-8-sixth contact lead pin; 3-1-first static contact; 3-2-first L-shaped static spring; 4-1-second static contact; 4-2-second L-shaped static spring; 5-1-first dynamic contact; 5-2-first L-shaped dynamic spring; 5- 3-first transition piece; 6-1-second moving contact; 6-2-second L-shaped moving spring piece; 6-3-second transition piece; 7-1-first yoke; 7-2-second yoke; 7-3-coil assembly; 7-4-iron core; 7-5-first connecting piece; 7-6-bracket; 8-1-first push rod; 8-2-second push rod; 8-3-first armature; 8-4-second armature; 8-5-first magnet; 8-6-second magnet; 8-7-hinge shaft; 8-8-second connecting piece; 3-1-1-first normally open static contact; 3-1-2-first normally closed static contact; 4-1-1-second normally open static contact; 4-1-2-second normally closed static contact; 7-3-1-coil frame; 7-3-2-coil. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to specific embodiments, but the embodiments of the present invention are not limited thereto.

[0023] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] See also Figure 1 to Figure 4 The embodiment of the present invention provides a magnetic latching relay with a same-layer structure. The relay is a single coil, the coil is a voltage type, and the rated voltage of the coil is 24Vd.c; the output contacts are two sets of conversions, which can switch 15A, 28Vd.c. resistive loads.

[0025] The magnetic latching relay specifically comprises: a substrate 1, wherein two rows of pins 2 are sealed and inserted on one side of the substrate 1, wherein the front row of pins 2 sequentially comprise, from left to right, a first contact lead pin 2-1, a second contact lead pin 2-2, a first control pin 2-3, and a third contact lead pin 2-4, and the rear row of pins 2 sequentially comprise, from left to right, a fourth contact lead pin 2-5, a second control pin 2-6, a fifth contact lead pin 2-7, and a sixth contact lead pin 2-8; wherein, the first contact The lead-out pin 2-1, the third contact lead-out pin 2-4, the fourth contact lead-out pin 2-5 and the sixth contact lead-out pin 2-8 are static contact lead-out pins; the second contact lead-out pin 2-2 and the fifth contact lead-out pin 2-7 are moving contact lead-out pins; the first control pin 2-3 and the second control pin 2-6 are input pins and output pins, respectively; in an embodiment of the present invention, the first control pin 2-3 is an input pin, and the second control pin 2-6 is an output pin.

[0026] A pair of first static reed assemblies 3 are vertically fixed to the upper ends of the first contact lead-out pin 2-1 and the fourth contact lead-out pin 2-5, a pair of second static reed assemblies 4 are vertically fixed to the upper ends of the third contact lead-out pin 2-4 and the sixth contact lead-out pin 2-8, and a first movable reed assembly 5 and a second movable reed assembly 6 are vertically fixed to the upper ends of the fifth contact lead-out pin 2-7 and the second contact lead-out pin 2-2, respectively; the cantilever end of the first movable reed assembly 5 is located between the pair of first static reed assemblies 3, and the first movable contact 5-1 on the first movable reed assembly 5 is located between the first static contacts 3-1 on the pair of first static reed assemblies 3, the cantilever end of the second movable reed assembly 6 is located between the pair of second static reed assemblies 4, and the second movable contact 6-1 on the second movable reed assembly 6 is located between the second static contacts 4-1 on the pair of second static reed assemblies 4.

[0027] The other side of the substrate 1 is provided with an electromagnetic assembly 7, and the first control pin 2-3 and the second control pin 2-6 are electrically connected to the electromagnetic assembly 7; an armature assembly 8 is hinged inside the electromagnetic assembly 7, and a first push rod 8-1 at the left end of the armature assembly 8 is arranged behind the cantilever end of the first movable spring assembly 5, and a second push rod 8-2 at the right end of the armature assembly 8 is arranged behind the cantilever end of the second movable spring assembly 6. The electromagnetic assembly 7 and the armature assembly 8 are on the same horizontal plane, thereby greatly reducing the height of the relay.

[0028] The magnetic latching relay further comprises a cover shell 9 , wherein the pins 2 , the electromagnetic assembly 7 and the armature assembly 8 are all located in the cover shell 9 , and the substrate 1 is fixed to the cover shell 9 .

[0029] Furthermore, the electromagnetic assembly 7 includes a first yoke 7-1, a second yoke 7-2, a coil assembly 7-3, an iron core 7-4, a first connecting piece 7-5 and a bracket 7-6; the coil assembly 7-3 includes a coil frame 7-3-1 and a coil 7-3-2 wound on the coil frame 7-3-1, the coil frame 7-3-1 is mounted on the iron core 7-4, and the first yoke 7-1 and the second yoke 7-2 are riveted on both ends of the iron core 7-4, the upper ends of the first yoke 7-1 and the second yoke 7-2 are fixed to the upper end of the bracket 7-6 after being welded and fixed by the first connecting piece 7-5, and the bracket 7-6 is fixed on the other side of the substrate 1; the coil 7-3-2 is connected to the first control pin 2-3 and the second control pin 2-6 respectively. The electromagnetic assembly 7 serves as the input part of the relay.

[0030] Furthermore, the armature assembly 8 includes a first armature 8-3, a second armature 8-4, a first magnetic steel 8-5, a second magnetic steel 8-6, the first push rod 8-1 and the second push rod 8-2; the first armature 8-3 and the second armature 8-4 are vertically arranged on both sides of the first yoke 7-1 and the second yoke 7-2, the first magnetic steel 8-5 and the second magnetic steel 8-6 ​​are fixed between the first armature 8-3 and the second armature 8-4, and a hinge shaft 8-7 is vertically arranged between the first magnetic steel 8-5 and the second magnetic steel 8-6; the second connecting piece 8 is fixedly mounted on both ends of the hinge shaft 8-7. -8, and the upper and lower ends of the first armature 8-3 and the second armature 8-4 are connected and fixed by the second connecting piece 8-8, and the second connecting piece 8-8 is clamped and welded on the upper and lower end surfaces of the first armature 8-3 and the second armature 8-4, so that the first armature 8-3, the second armature 8-4, the first magnetic steel 8-5, the second magnetic steel 8-6 ​​and the hinge shaft 8-7 are fixed together; the two ends of the hinge shaft 8-7 are respectively hinged on the inner side of the first connecting piece 7-5 and the bracket 7-6; the first push rod 8-1 and the second push rod 8-2 are respectively spot welded on the left and right ends of the outer side of the first armature 8-3. The first magnetic steel 8-5 and the second magnetic steel 8-6 ​​are both permanent magnetic steels; the armature assembly 8 serves as the transmission part of the relay.

[0031] The electromagnetic system composed of the electromagnetic assembly 7 and the armature assembly 8 adopts a differential magnetic circuit structure. The first armature 8-3, the second armature 8-4, the first magnetic steel 8-5 and the second magnetic steel 8-6 ​​form an I-shaped structure, which is beneficial to reducing the volume of the product. At the same time, this structure can enable the dynamic spring assembly and the static spring assembly to obtain a larger contact gap and contact tracking, which can meet the larger load requirements of the product.

[0032] Further, a pair of the first static spring assemblies 3 are each composed of a first L-shaped static spring 3-2 and a first static contact 3-1, one end of the first L-shaped static spring 3-2 is vertically fixed to the upper end of the first contact lead-out pin 2-1 and the fourth contact lead-out pin 2-5, and the other end of the first L-shaped static spring 3-2 is vertically riveted with the first static contact 3-1, and the two first static contacts 3-1 on the two first L-shaped static springs 3-2 include a first normally open static contact 3-1-1 and a first normally closed static contact 3-1-2;

[0033] A pair of the second static spring sheet assemblies 4 are each composed of a second L-shaped static spring sheet 4-2 and a second static contact 4-1, one end of the second L-shaped static spring sheet 4-2 is vertically fixed to the upper end of the third contact lead-out pin 2-4 and the sixth contact lead-out pin 2-8, and the other end of the second L-shaped static spring sheet 4-2 is vertically riveted with the second static contact 4-1, and the two second static contacts 4-1 on the two second L-shaped static spring sheets 4-2 also include a second normally open static contact 4-1-1 and a second normally closed static contact 4-1-2, and the positions of the first normally open static contact 3-1-1 and the second normally open static contact 4-1-4, and the first normally closed static contact 3-1-2 and the second normally closed static contact 4-1-2 are opposite.

[0034] Furthermore, the first movable spring assembly 5 is composed of a first L-shaped movable spring 5-2, a first movable contact 5-1, and a first transition piece 5-3. One end of the first L-shaped movable spring 5-2 is welded to the first transition piece 5-3, and then vertically fixed to the upper end of the fifth contact lead-out pin 2-2 through the first transition piece 5-3. The other end of the first L-shaped movable spring 5-2 is vertically riveted with the first movable contact 5-1.

[0035] The second moving spring assembly 6 is composed of a second L-shaped moving spring 6-2, the second moving contact 6-1, and a second transition piece 6-3. One end of the second L-shaped moving spring 6-2 is welded to the second transition piece 6-3, and then vertically fixed to the upper end of the second contact lead-out pin 2-7 through the second transition piece 6-3. The other end of the second L-shaped moving spring 6-2 is vertically riveted with the second moving contact 6-1.

[0036] The first push rod 8-1 and the second push rod 8-2 are respectively arranged opposite to the first L-shaped moving reed 5-2 and the second L-shaped moving reed 6-2. The first stationary reed assembly 3, the second stationary reed assembly 4, the first moving reed assembly 5 and the second moving reed assembly 6 constitute the output part of the relay.

[0037] The moving reed is made of beryllium bronze and the static reed is made of zinc white copper, both of which have excellent electrical and thermal conductivity. The moving reed is cantilevered and is relatively long and thin overall, while the static reed is fixed on the static contact lead-out terminal and is relatively thick overall, so that the contact form between the moving reed assembly and the static reed assembly is a semi-flexible contact form, and the structure of the electromagnetic system is used to set a reasonable contact gap and contact pressure for the moving reed assembly and the static reed assembly, effectively solving the requirements for contact load and life.

[0038] Working principle of the present invention:

[0039] In the initial state, under the action of the first magnetic steel 8-5 and the second magnetic steel 8-6, one end of the first armature 8-3 (the left end in the figure) is fitted with the first yoke 7-1, and the other end of the second armature 8-4 (the right end in the figure) is fitted with the first yoke 7-2, so that the first push rod 8-1 leaves the first L-shaped moving spring piece 5-2, and the first L-shaped moving spring piece 5-2 is reset, so that the first moving contact 5-1 is disconnected from the first normally open static contact 3-1-1 and connected to the first normally closed static contact 3-1-2, so that the second push rod 8-2 pushes the second L-shaped moving spring piece 6-2 opposite to it, so that the second moving contact 6-1 is disconnected from the second normally open static contact 4-1-1 and connected to the second normally closed static contact 4-1-2; when the rated pulse voltage is input to the coil 7-3-2 through the input pin, the electromagnetic field generated by the coil 7-3-2 overlaps with the magnetic field of the magnetic steel, one end of the first armature 8-3 and the other end of the second armature 8-4 form a magnetic field superposition, and the other end of the first armature 8-3 and one end of the second armature 8-4 form a magnetic field cancellation; when the magnetic force difference between the two ends of the first armature 8-3 and the second armature 8-4 is greater than the holding force of the magnetic steel, the first armature 8-3 and the second armature 8-4 are offset from one end of the magnetic field. Rotate toward the end where the magnetic field is superimposed; at the end where the magnetic field is superimposed: the other end of the first armature 8-3 (the right end in the figure) is fitted with the second yoke 7-2, and one end of the second armature 8-4 (the left end in the figure) is fitted with the first yoke 7-1, so that the second push rod 8-2 leaves the second L-shaped moving spring 6-2, and the second L-shaped moving spring 6-2 is reset, so that the second moving contact 6-1 is disconnected from the second normally closed static contact 4-1-2 and connected to the second normally open static contact 4-1-1, realizing the switching function of a group of contacts at the right end of the product; at the end where the magnetic field is offset: the other end of the second armature 8-4 (the right end in the figure) is fitted with The second yoke 7-2 is separated, and one end of the first armature 8-3 (the left end in the figure) is separated from the first yoke 7-1, so that the first push rod 8-1 pushes the first L-shaped moving spring 5-2 opposite to it, thereby disconnecting the first moving contact 5-1 from the first normally closed static contact 3-1-2 and connecting with the first normally open static contact 3-1-1, thereby realizing the switching function of a group of contacts at the left end of the product; when the electromagnetic system is de-energized, the relay maintains the energized state unchanged; when the electromagnetic system is excited by a reverse pulse, the electromagnetic field generated by the coil 7-3-2 and the permanent magnetic field overlap in the opposite direction, and the product returns to its initial state.

[0040] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A magnetic latching relay with a same-layer structure, characterized in that: The invention comprises a base plate, wherein two rows of pins are sealed and inserted on one side of the base plate, wherein the front row of pins comprises, from left to right, a first contact lead-out pin, a second contact lead-out pin, a first control pin, and a third contact lead-out pin, and the rear row of pins comprises, from left to right, a fourth contact lead-out pin, a second control pin, a fifth contact lead-out pin, and a sixth contact lead-out pin; a pair of first static spring sheet assemblies are vertically fixed to the ends of the first contact lead-out pin and the fourth contact lead-out pin, and a pair of first static spring sheet assemblies are vertically fixed to the ends of the third contact lead-out pin and the sixth contact lead-out pin. two static reed assemblies, the ends of the fifth contact lead-out pin and the second contact lead-out pin are respectively vertically fixed with a first dynamic reed assembly and a second dynamic reed assembly; the cantilever end of the first dynamic reed assembly is located between a pair of first static reed assemblies, and the first dynamic contact on the first dynamic reed assembly is located between the first static contacts on the pair of first static reed assemblies, the cantilever end of the second dynamic reed assembly is located between a pair of second static reed assemblies, and the second dynamic contact on the second dynamic reed assembly is located between the second static contacts on the pair of second static reed assemblies; An electromagnetic assembly is provided on the other side of the substrate, and the first control pin and the second control pin are electrically connected to the electromagnetic assembly; an armature assembly is hinged on the inner side of the electromagnetic assembly, and the first push rod at the left end of the armature assembly is arranged behind the cantilever end of the first movable spring assembly, and the second push rod at the right end of the armature assembly is arranged behind the cantilever end of the second movable spring assembly.

2. The magnetic latching relay of the same layer structure according to claim 1, characterized in that: The electromagnetic assembly includes a first yoke, a second yoke, a coil assembly, an iron core, a first connecting plate and a bracket; the coil assembly is mounted on the iron core, and the first yoke and the second yoke are fixed at both ends of the iron core, the upper ends of the first yoke and the second yoke are fixedly connected by a first connecting plate and then fixed to the bracket, and the bracket is fixed on the other side of the substrate; the coil assembly is respectively connected to the first control pin and the second control pin.

3. The magnetic latching relay of the same layer structure according to claim 2, characterized in that: The armature assembly includes a first armature, a second armature, a first magnet, a second magnet, the first push rod and a second push rod; the first armature and the second armature are vertically oppositely arranged on both sides of the first yoke and the second yoke, the first magnet and the second magnet are fixed between the first armature and the second armature, and a hinge shaft is vertically provided between the first magnet and the second magnet; the upper and lower ends of the hinge shaft are fitted with second connecting plates, and the upper and lower ends of the first armature and the second armature are connected and fixed by the second connecting plate; the two ends of the hinge shaft are respectively hinged to the first connecting plate and the inner side of the bracket; the first push rod and the second push rod are respectively fixed to the left and right ends of the outer side of the first armature.

4. The magnetic latching relay of the same layer structure according to claim 3, characterized in that: The first static spring assembly is composed of a first L-shaped static spring and the first static contact, one end of the first L-shaped static spring is vertically fixed to the ends of the first contact lead-out pin and the fourth contact lead-out pin, and the other end of the first L-shaped static spring is vertically fixed with the first static contact; The second static spring assembly is composed of a second L-shaped static spring and the second static contact, one end of the second L-shaped static spring is vertically fixed to the ends of the third contact lead-out pin and the sixth contact lead-out pin, and the other end of the second L-shaped static spring is vertically fixed to the second static contact.

5. The magnetic latching relay of the same layer structure according to claim 4, characterized in that: The first movable spring assembly comprises a first L-shaped movable spring and the first movable contact, one end of the first L-shaped movable spring is vertically fixed to the end of the fifth contact lead pin, and the other end of the first L-shaped movable spring is vertically fixed to the first movable contact; The second moving spring assembly includes a second L-shaped moving spring and the second moving contact, one end of the second L-shaped moving spring is vertically fixed to the end of the second contact lead pin, and the other end of the second L-shaped moving spring is vertically fixed with the second moving contact.

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