CN219163282U - Durable relay - Google Patents

Abstract

The application relates to the technical field of relays, in particular to a durable relay which comprises a base, an input assembly, a driving assembly and an output assembly, wherein the input assembly and the output assembly are connected with the base, the input assembly and the output assembly are connected through the driving assembly, the output assembly comprises a moving contact, a normally open static contact, a first static contact, a normally closed static contact and a second static contact, the moving contact is connected with the driving assembly, the normally open static contact is connected with the first static contact, the normally closed fixed contact is connected with the second fixed contact, one side of the moving contact can be contacted with the normally open fixed contact, the other side of the moving contact can be contacted with the normally closed fixed contact, the first fixed contact and the second fixed contact are arranged corresponding to the moving contact and are spliced with the base, when the moving contact is contacted with the normally open fixed contact, the moving contact is attached to the opposite end face of the normally open fixed contact, and when the moving contact is contacted with the normally closed fixed contact, the moving contact is attached to the opposite end face of the normally closed fixed contact. This application has the effect of extension relay life.

Description

Durable relay

Technical Field

The application relates to the technical field of relays, in particular to a durable relay.

Background

The relay is a common electric control device in an automatic control circuit, which is equivalent to an automatic switch, and can control the operation of large current by small current, so that the relay can play roles of automatic regulation, safety protection, circuit switching and the like in the circuit.

In the related art, a relay generally includes a core, a coil, an armature, a return spring, a moving contact, and a stationary contact. The coil is wound on the outer side of the iron core, the armature is correspondingly arranged with the iron core, one end of the armature is connected with the return spring, the other end of the armature is connected with the movable contact, and the fixed contact is arranged corresponding to the movable contact and comprises a normally open fixed contact and a normally closed fixed contact. When a certain voltage is applied to two ends of the coil, the coil is electrified to generate an electromagnetic effect, and the iron core generates electromagnetic attraction force on the armature, so that the movable contact is contacted with the normally open static contact to complete a circuit; when the coil is powered off, the electromagnetic attraction force disappears, the return spring drives the armature to reset, and the movable contact contacts with the normally closed stationary contact to disconnect the circuit.

For the related art, the normally open static contact and the normally closed static contact are often arranged in parallel, and the armature swings left and right to respectively contact the normally open static contact and the normally closed static contact, so that the movable contact can be completely attached to one of the static contacts at most, the movable contact cannot be completely attached to the other static contact when contacting the other static contact, the abrasion is large, and after a period of use, the abrasion on one side of the movable contact is large, so that poor contact is caused. Therefore, there is a problem in that the service life is limited.

Disclosure of Invention

In order to prolong the service life of the relay, the application provides a durable relay, which adopts the following technical scheme:

the utility model provides a durable relay, includes base, input subassembly, drive assembly and output subassembly, input subassembly and output subassembly all are connected with the base, input subassembly passes through drive assembly with output subassembly and is connected, output subassembly includes moving contact, normally open stationary contact, first stationary contact, normally closed stationary contact and second stationary contact, the moving contact is connected with drive assembly, normally open stationary contact is connected with first stationary contact, normally closed stationary contact is connected with the second stationary contact, moving contact one side can contact each other with normally open stationary contact, opposite side can contact each other with normally closed stationary contact, first stationary contact all corresponds the moving contact setting and peg graft with the base with the second stationary contact, works as when moving contact contacts with normally open stationary contact, moving contact is laminated with the terminal surface in opposite directions of normally open stationary contact, when moving contact contacts with normally closed stationary contact, moving contact is laminated with the terminal surface in opposite directions of normally closed stationary contact.

By adopting the technical scheme, the voltage is applied to the two ends of the input assembly, so that the input assembly is electrified and generates an electromagnetic effect, the driving assembly can be attracted by electromagnetic attraction to move towards the input assembly, and the moving contact is driven to contact with the normally open fixed contact to switch on the main circuit; when the input assembly is powered off, the electromagnetic effect disappears, and the driving assembly resets, so that the moving contact is separated from the normally-open fixed contact and is contacted with the normally-closed fixed contact, and the secondary circuit is connected.

The movable contact contacts with the normally open fixed contact or the normally closed fixed contact through swinging to generate larger impact force, and when the movable contact contacts with the normally open fixed contact, the movable contact is attached to the opposite end surfaces of the normally open fixed contact; when the moving contact contacts with the normally-closed fixed contact, the moving contact is attached to the opposite end surfaces of the normally-closed fixed contact, so that the contact area between the moving contact and the normally-open fixed contact and between the moving contact and the normally-closed fixed contact is the largest, the impact force of the moving contact can be dispersed, abrasion is further reduced, the service lives of the moving contact, the normally-open fixed contact and the normally-closed fixed contact are prolonged, and the purpose of prolonging the service life of the relay is achieved.

Optionally, the output assembly further includes a conductive sheet connected with the driving assembly, one side of the conductive sheet is provided with a movable contact corresponding to the movable contact, the conductive sheet is fixedly connected with a connecting column corresponding to the movable contact, and the movable contact is provided with a fixing hole for the connecting column to pass through.

By adopting the technical scheme, the movable contact piece is thinner, so that the fixing effect is better compared with the original welding fixation. During assembly, the movable contact piece is connected with the conductive piece, so that the connecting column penetrates through the fixing hole, and then riveting is performed on the connecting column to complete fixing.

Optionally, the drive assembly includes iron core, armature, connection piece and extension spring, the iron core corresponds the setting with the armature, armature one end and connection piece fixed connection, the other end is connected with the moving contact and can swing, the connection piece is connected with the conducting strip, extension spring one end is connected with the conducting strip, the other end is connected with the one end that the connection piece kept away from the armature.

By adopting the technical scheme, after the coil is electrified, the iron core can generate electromagnetic attraction force to attract the armature, and the armature drives the moving contact to move towards the direction close to the iron core so as to contact with the normally open fixed contact, so that a main circuit is connected, and at the moment, the tension spring is pulled away; after the coil is powered off, the tension spring resets to drive the armature to return, so that the moving contact is separated from the normally open static contact, and the moving contact is contacted with the normally closed static contact to switch on the auxiliary circuit.

Optionally, the one end that the connection piece kept away from armature fixedly connected with connection lug, one side that the connection lug kept away from the extension spring is provided with the spread groove that supplies the extension spring card to go into.

By adopting the technical scheme, the connection strength between the tension spring and the connecting sheet can be enhanced, and the tension spring and the connecting sheet are prevented from being separated when in operation as much as possible; simultaneously, the assembly is convenient, and the tension spring is directly clamped into the connecting groove.

Optionally, the conducting strip is towards the fixed piece of equal fixedly connected with in both ends of connection piece one side, the fixed slot that corresponds the fixed piece has all been seted up at the both ends of connection piece one side that keep away from armature.

Through adopting above-mentioned technical scheme, during the equipment, be connected the connection piece with the conducting strip directly for the stationary blade card can in the fixed slot, can strengthen joint strength simultaneously.

Optionally, the fixing piece is provided with a chamfer corresponding to the connecting piece.

By adopting the technical scheme, the connecting sheet is convenient to clamp into the fixed groove.

Optionally, one end of the armature close to the moving contact is connected with a conductive piece, and one end of the conductive piece far away from the moving contact is connected with a conductive sheet.

By adopting the technical scheme, the armature is thinner, the conductivity is limited, the conductive piece can enhance the conductive effect, and the current stability of the main circuit is ensured.

Optionally, the input assembly includes coil, first input terminal and second input terminal, the coil is connected and cup joints in the iron core outside with the base, first input terminal and second input terminal all peg graft with the base, coil one end is connected with first input terminal, the other end is connected with second input terminal.

By adopting the technical scheme, when the main circuit is required to be connected, the first input terminal and the second input terminal are connected, so that the coil is electrified; when the sub-circuit is to be turned on, the first input terminal and the second input terminal may be turned off.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the first static contact piece and the second static contact piece are arranged corresponding to the moving contact, so that when the moving contact is contacted with the normally open static contact, the opposite end surfaces of the first static contact piece and the second static contact piece are attached, and when the moving contact is contacted with the normally closed static contact, the opposite end surfaces of the moving contact and the normally closed static contact are attached, so that the contact area between the moving contact and the normally open static contact is the largest, the impact force generated by swinging of the moving contact can be dispersed, abrasion is reduced, and the service life is prolonged;

2. the movable contact is connected by arranging the connecting column, so that the traditional welding mode is replaced, and the connecting effect is better;

3. through setting up connection lug and spread groove, the extension spring of being convenient for is convenient for with the equipment of connection piece, strengthens the connection effect simultaneously.

Drawings

Fig. 1 is a schematic structural view of a durable relay according to an embodiment of the present application.

Fig. 2 is a top view of the durable relay of the embodiments of the present application in a state of communicating with a secondary circuit.

Fig. 3 is a cross-sectional view taken along line A-A of fig. 2.

Fig. 4 is a top view of the durable relay of the embodiments of the present application in a connected primary circuit state.

Fig. 5 is another perspective structural schematic diagram of a durable relay according to an embodiment of the present application.

Fig. 6 is an enlarged schematic view at B in fig. 5.

Reference numerals illustrate: 1. a base; 11. a bracket; 2. an input assembly; 21. a coil; 22. a first input terminal; 23. a second input terminal; 3. a drive assembly; 31. an iron core; 32. an armature; 33. a connecting sheet; 331. a connection bump; 332. a connecting groove; 333. a fixing groove; 34. a tension spring; 4. an output assembly; 41. a moving contact; 42. a normally open static contact; 43. the first static contact piece; 44. a normally closed static contact; 45. the second static contact piece; 46. a conductive sheet; 461. a connecting column; 462. a fixing piece; 4621. chamfering; 47. a movable contact; 471. a fixing hole; 48. and a conductive member.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-6.

The embodiment of the application discloses a durable relay.

Referring to fig. 1, a durable relay includes a base 1, and an input assembly 2, a drive assembly 3, and an output assembly 4 mounted on the base 1. Applying a voltage across the input assembly 2 to energize the input assembly 2 and produce an electromagnetic effect, the drive assembly 3 being capable of being attracted by electromagnetic attraction force to move towards the input assembly 2 to cause the output assembly 4 to complete the main circuit; when the input assembly 2 is powered off, the electromagnetic effect disappears, and the driving assembly 3 is reset, so that the output assembly 4 is connected with the secondary circuit.

Referring to fig. 1, the input assembly 2 includes a coil 21, a first input terminal 22, and a second input terminal 23. The first input terminal 22 and the second input terminal 23 are respectively inserted into the base 1 and fixedly connected with two ends of the coil 21. When the main circuit needs to be switched on, the first input terminal 22 and the second input terminal 23 are switched on, so that the coil 21 is electrified; when the secondary circuit is required to be turned on, the first input terminal 22 and the second input terminal 23 are disconnected

Referring to fig. 2 and 3, the driving assembly 3 includes a core 31, an armature 32, a connection piece 33, and a tension spring 34. The base 1 is fixedly connected with two supports 11 towards one side of the coil 21, the iron core 31 is fixedly connected between the two supports 11, and the coil 21 is sleeved outside the iron core 31. One end of the connecting piece 33 is fixedly connected with the output assembly 4, the other end of the connecting piece is fixedly connected with the armature 32, one end of the armature 32 away from the connecting piece 33 protrudes relative to the connecting piece 33, and the armature 32 is fixedly connected to one side of the connecting piece 33 away from the iron core 31. One end of the tension spring 34 is fixedly connected with the output assembly 4, and the other end is fixedly connected with the side of the connecting piece 33, which is far away from the armature 32. After the coil 21 is electrified, the iron core 31 can generate electromagnetic attraction force to attract the armature 32, so that the armature 32 drives the connecting piece 33 to move towards the direction close to the iron core 31, and the connecting piece 33 pulls the tension spring 34 away; after the coil 21 is powered off, the tension spring 34 resets to drive the connecting sheet 33 to return, and the connecting sheet 33 drives the armature 32 to return.

Referring to fig. 2 and 4, the output assembly 4 includes a moving contact 41, a normally open fixed contact 42, a normally closed fixed contact 44, and a conductive sheet 46. The moving contact 41 is fixedly connected to one end of the armature 32, which is far away from the connecting sheet 33, the normally open fixed contact 42 is arranged corresponding to the moving contact 41 and is positioned at one side of the moving contact 41, which faces the coil 21, and the normally closed fixed contact 44 is arranged corresponding to the moving contact 41 and is positioned at one side of the moving contact 41, which faces away from the coil 21. The conductive sheet 46 is L-shaped, and one end of the conductive sheet 46 is fixedly connected with the bracket 11, and the other end is fixedly connected with the connecting sheet 33. When the coil 21 is electrified, the armature 32 drives the moving contact 41 to move towards the direction approaching the coil 21, so that the moving contact 41 is abutted with the normally open fixed contact 42 to switch on a main circuit; when the coil 21 is powered off, the tension spring 34 is reset, so that the armature 32 is reset, the moving contact 41 is abutted with the normally closed fixed contact 44, and the secondary circuit is connected.

Referring to fig. 2 and 4, the base 1 is plugged with a first static contact 43 and a second static contact 45, the first static contact 43 is fixedly connected with the normally open static contact 42, and the second static contact 45 is fixedly connected with the normally closed static contact 44. When the moving contact 41 is abutted against the normally closed fixed contact 44, the armature 32 and the second fixed contact 45 are in a parallel state, and the moving contact 41 and the normally closed fixed contact 44 can be completely attached; when the moving contact 41 abuts against the normally open fixed contact 42, the armature 32 and the first fixed contact 43 are in a parallel state, and the normally open fixed contact 42 and the moving contact 41 can be completely attached. The movable contact 41 is completely attached to the normally closed fixed contact 44, and the normally open fixed contact 42 is completely attached to the movable contact 41, so that the contact area is maximized, on one hand, the contact is good, the stability of current passing is improved, on the other hand, impact force generated by swinging of the armature 32 can be dispersed, abrasion is reduced, and the service life is prolonged.

Referring to fig. 5, the output assembly 4 further includes a conductive member 48, one end of the conductive member 48 being fixedly connected to the conductive plate 46 and the other end being fixedly connected to the armature 32. The conductive member 48 is formed by twisting a plurality of copper wires together, which can enhance conductivity and ensure the stability of current passing.

Referring to fig. 5, two connecting posts 461 are fixedly connected to one side of the conductive sheet 46 away from the coil 21, a movable contact sheet 47 positioned on one side of the conductive sheet 46 away from the coil 21 is inserted into the base 1, and two fixing holes 471 for the connecting posts 461 to pass through are formed in the movable contact sheet 47. During assembly, the movable contact 47 is matched with the conductive sheet 46, so that the connecting column 461 penetrates through the fixing hole 471, and then the connecting column 461 is riveted, so that one end of the connecting column 461 far away from the conductive sheet 46 forms a disc with the diameter larger than that of the fixing hole 471, and the fixing is completed.

Referring to fig. 5 and 6, a connecting protrusion 331 is fixedly connected to a middle portion of one end of the connecting piece 33, which is far from the armature 32, and the connecting protrusion 331 is fixedly connected to the tension spring 34. The connecting lug 331 is equipped with the cross-section and is convex spread groove 332 in one side card that deviates from extension spring 34, and the spread groove 332 supplies one end card of extension spring 34 to go into, on the one hand can prevent that extension spring 34 and connecting lug 331 break away from at the during operation, and on the other hand convex setting can reduce the wearing and tearing to extension spring 34, increase of service life. The fixing structure of the conductive sheet 46 and the tension spring 34 is identical to the fixing structure of the connecting sheet 33 and the tension spring 34, and thus will not be described herein.

Referring to fig. 5 and 6, both sides of the connecting piece 33 near one end of the connecting bump 331 are provided with fixing slots 333, both sides of one end of the conductive piece 46 facing the connecting piece 33 are fixedly connected with fixing pieces 462 capable of being clamped into the fixing slots 333, and opposite sides of the two fixing pieces 462 are provided with chamfers 4621. In assembly, the connecting piece 33 is directly connected with the conductive piece 46, so that the fixing piece 462 is clamped into the fixing groove 333 along the chamfer 4621. The width of the fixing slot 333 is slightly larger than the thickness of the fixing piece 462, and a space for the swing of the connecting piece 33 is reserved.

The implementation principle of the durable relay provided by the embodiment of the application is as follows: when the main circuit is required to be connected, the first input terminal 22 and the second input terminal 23 are connected, so that the coil 21 is electrified, the iron core 31 can generate electromagnetic attraction force to attract the armature 32, the armature 32 drives the connecting piece 33 to move towards the direction close to the iron core 31, the connecting piece 33 pulls the tension spring 34 open until the moving contact 41 is abutted with the normally open fixed contact 42, and the main circuit is connected;

when the secondary circuit is required to be connected, the first input terminal 22 and the second input terminal 23 are disconnected, so that the coil 21 is powered off, the tension spring 34 is reset to drive the connecting piece 33 to return, the connecting piece 33 drives the armature 32 to return, and the movable contact 41 is abutted with the normally closed fixed contact 44 to connect the secondary circuit.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. The utility model provides a durable relay, includes base (1), input subassembly (2), drive assembly (3) and output subassembly (4), input subassembly (2) all are connected with base (1) with output subassembly (4), input subassembly (2) are connected through drive assembly (3) with output subassembly (4), output subassembly (4) include moving contact (41), normally open stationary contact (42), first stationary contact (43), normally closed stationary contact (44) and second stationary contact (45), moving contact (41) are connected with drive assembly (3), normally open stationary contact (42) are connected with first stationary contact (43), normally closed stationary contact (44) are connected with second stationary contact (45), moving contact (41) one side can contact each other with normally open stationary contact (42), the opposite side can contact each other with normally closed stationary contact (44), its characterized in that: the first static contact piece (43) and the second static contact piece (45) are arranged corresponding to the moving contact (41) and are spliced with the base (1), when the moving contact (41) is contacted with the normally open static contact (42), the moving contact (41) is spliced with the opposite end face of the normally open static contact (42), and when the moving contact (41) is contacted with the normally closed static contact (44), the moving contact (41) is spliced with the opposite end face of the normally closed static contact (44).

2. A durable relay according to claim 1, wherein: the output assembly (4) further comprises a conducting plate (46) connected with the driving assembly (3), a movable contact (47) corresponding to the movable contact (41) is arranged on one side of the conducting plate (46), the conducting plate (46) is fixedly connected with a connecting column (461) corresponding to the movable contact (47), and a fixing hole (471) for the connecting column (461) to pass through is formed in the movable contact (47).

3. A durable relay according to claim 2, wherein: the driving assembly (3) comprises an iron core (31), an armature (32), a connecting sheet (33) and a tension spring (34), wherein the iron core (31) and the armature (32) are correspondingly arranged, one end of the armature (32) is fixedly connected with the connecting sheet (33), the other end of the armature is connected with a moving contact (41) and can swing, the connecting sheet (33) is connected with a conducting sheet (46), one end of the tension spring (34) is connected with the conducting sheet (46), and the other end of the tension spring is connected with one end of the connecting sheet (33) away from the armature (32).

4. A durable relay according to claim 3, wherein: one end of the connecting sheet (33) far away from the armature (32) is fixedly connected with a connecting lug (331), and one side of the connecting lug (331) far away from the tension spring (34) is provided with a connecting groove (332) for the tension spring (34) to be clamped in.

5. A durable relay according to claim 3, wherein: the conducting strip (46) is towards connection piece (33) one side both ends fixedly connected with stationary blade (462), fixed slot (333) that corresponds stationary blade (462) have all been seted up at connection piece (33) both ends that keep away from armature (32) one side.

6. A durable relay according to claim 5, wherein: the fixing piece (462) is provided with a chamfer (4621) corresponding to the connecting piece (33).

7. A durable relay according to claim 3, wherein: one end of the armature (32) close to the moving contact (41) is connected with a conductive piece (48), and one end of the conductive piece (48) far away from the moving contact (41) is connected with a conductive sheet (46).

8. A durable relay according to claim 3, wherein: the input assembly (2) comprises a coil (21), a first input terminal (22) and a second input terminal (23), wherein the coil (21) is connected with the base (1) and sleeved outside the iron core (31), the first input terminal (22) and the second input terminal (23) are both spliced with the base (1), one end of the coil (21) is connected with the first input terminal (22), and the other end of the coil is connected with the second input terminal (23).

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