CN214378239U - Electromagnetic relay capable of preventing push sheet from falling off - Google Patents

Abstract

The utility model belongs to the technical field of the automatically controlled technique and specifically relates to indicate an electromagnetic relay who prevents push jack and drop, including the casing, all set up in electromagnetic mechanism, push away piece, moving contact and two static contacts in the casing, the moving contact is located between two static contacts, electromagnetic mechanism warp push away a drive the moving contact is contradicted with one of them static contact, the inside wall of casing is provided with spacing subassembly, push away a slip set up in the spacing subassembly, spacing subassembly is used for the guide push away a slip along the straight line and be used for preventing push away the piece breaks away from electromagnetic mechanism or the moving contact. The utility model has the advantages that: the utility model discloses a be provided with spacing subassembly in the casing for play spacing and guide effect to pushing away the piece, guaranteed to push away the piece and can not take place to drop, thereby promoted stability.

Description

Electromagnetic relay capable of preventing push sheet from falling off

Technical Field

The utility model belongs to the technical field of automatically controlled technique and specifically relates to indicate an electromagnetic relay who prevents the push jack and drop.

Background

At present, the electromagnetic relay has multiple driving modes, one of which is a mode of controlling the movement of a pushing piece through an electromagnetic mechanism, so that a moving contact acts to be in contact with different fixed contacts, and the state switching is realized. In such an electromagnetic relay, the pushing element is usually arranged in a suspended manner, that is, the pushing element may fall off during transportation, so that the electromagnetic relay cannot be normally used.

Disclosure of Invention

The utility model discloses problem to prior art provides an electromagnetic relay who prevents the push jack and drop, can effectively prevent the push jack and drop to stability has been promoted.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a pair of prevent electromagnetic relay that push jack drops, including the casing, set up in electromagnetic mechanism in the casing, push away piece, moving contact and two static contacts, the moving contact is located between two static contacts, electromagnetic mechanism warp push away a drive the moving contact switches on with one of them static contact conflict, the inside wall of casing is provided with spacing subassembly, push away a slip set up in spacing subassembly, spacing subassembly be used for the guide push away the piece and follow the rectilinear sliding and be used for preventing push away the piece breaks away from electromagnetic mechanism or the moving contact.

Furthermore, the limiting assembly comprises two first limiting guide pieces, each first limiting guide piece comprises a first bearing part and a first limiting part, the two first bearing parts are respectively connected to the same side wall of the shell, the first limiting parts are arranged on the first bearing parts, and the two first limiting parts are respectively connected to the two side walls of the shell, which are opposite to each other; the two sides of the pushing piece are respectively abutted against the two first limiting parts, and the end face of the pushing piece is abutted against the two first supporting parts.

Furthermore, the limiting assembly further comprises two second limiting guide pieces, each second limiting guide piece comprises a second bearing part and a second limiting part, the two second bearing parts are respectively connected to the same side wall of the shell, the second limiting parts are arranged on the second bearing parts, and the two second limiting parts are respectively connected to the two side walls of the shell, which are opposite to each other; two sides of the pushing piece are respectively abutted against the two second limiting parts, and the end face of the pushing piece is abutted against the two second supporting parts;

a gap is arranged between the first limit guide member and the second limit guide member which are positioned on the same side of the shell.

Furthermore, the limiting assembly further comprises a top limiting part arranged at the top of the shell, a limiting groove is formed in the top of the pushing part, and the limiting groove is used for assembling the top limiting part.

Preferably, the limiting assembly further comprises a bottom limiting part, the bottom limiting part is located between the first limiting guide part and the second limiting guide part, and the bottom limiting part is used for abutting against the pushing part.

More preferably, the pushing piece is provided with a movable hole, and the bottom limiting piece is movably arranged in the movable hole.

Further, the shell comprises a main shell and a sealing piece, the main shell is of a hollow structure with an opening at one side, and the sealing piece is used for sealing the opening of the main shell; the limiting assembly is arranged on the main shell, and the electromagnetic mechanism, the pushing piece, the moving contact and the two fixed contacts are arranged on the sealing piece.

Furthermore, the sealing piece is provided with a stop block, and the stop block is used for stopping the static contact to prevent the moving contact from being adhered when being separated from the static contact.

Further, electromagnetic mechanism includes coil, support, iron core, yoke, armature and shell fragment, the coil is around locating the support, the yoke with the iron core all install in the support, armature rotate set up in the support, the shell fragment is used for preventing armature breaks away from the support.

Furthermore, the armature comprises a magnetic part and a driving part, the magnetic part and the driving part are arranged in a crossed mode, the iron core is used for attracting the magnetic part when the coil is electrified, and the driving part is connected with the pushing part and used for driving the pushing part to move; the elastic sheet comprises a first fixing part, a connecting part and a second fixing part, two ends of the connecting part are respectively connected to the first fixing part and the second fixing part, the first fixing part is arranged on the yoke and positioned between the yoke and the fixing part, and the second fixing part is abutted to the joint of the magnetic suction part and the driving part;

the first fixing part is provided with a bulge, and the bulge is used for supporting the driving part.

The utility model has the advantages that: the utility model discloses a be provided with spacing subassembly in the casing for play spacing and guide effect to pushing away the piece, guaranteed to push away the piece and can not take place to drop, thereby promoted stability.

Drawings

Fig. 1 is an exploded view of the present invention.

Fig. 2 is a schematic view of the main housing of the present invention.

Fig. 3 is a schematic view of another embodiment of the main housing of the present invention.

Fig. 4 is an exploded schematic view of the electromagnetic mechanism of the present invention.

Fig. 5 is a schematic diagram of an arc extinguishing structure according to the present invention.

Fig. 6 is a schematic view of the pushing member of the present invention.

Reference numerals: 1-shell, 2-electromagnetic mechanism, 3-pushing piece, 4-moving contact, 5-static contact, 6-limiting component, 11-main shell, 12-sealing piece, 22-bracket, 23-iron core, 24-yoke, 25-armature, 26-spring piece, 31-movable hole, 32-limiting groove, 61-first limiting guide piece, 62-second limiting guide piece, 63-gap, 64-top limiting piece, 65-bottom limiting piece, 111-arc extinguishing structure, 112-conductor, 113-control switch, 114-air blowing piece, 121-stop block, 122-limiting seat, 124-extension part, 125-elastic buffer piece, 251-magnetic attraction part, 252-driving part, 261-first fixing part, 262-connecting part, 263-second fixing part, 264-bulge, 611-first supporting part, 612-first limiting part, 621-second supporting part and 622-second limiting part.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 6, the utility model provides a pair of prevent electromagnetic relay that push jack drops, including casing 1, all set up in electromagnetic mechanism 2 in the casing 1, push away piece 3, moving contact 4 and two static contacts 5, moving contact 4 is located between two static contacts 5, electromagnetic mechanism 2 warp push away the 3 drives of piece moving contact 4 switches on with one of them static contact 5, casing 1's inside wall is provided with spacing subassembly 6, push away 3 slip set up in spacing subassembly 6, spacing subassembly 6 is used for the guide push away piece 3 along the straight line slip and be used for preventing push away piece 3 breaks away from electromagnetic mechanism 2 or moving contact 4.

When the electromagnetic mechanism is used, the electromagnetic mechanism 2 is electrified to drive the pushing piece 3 to act, so that the pushing piece 3 drives the moving contact 4 to ascend, and the moving contact 4 is contacted with the static contact 5 to form a closed loop; when the electromagnetic mechanism 2 is powered off or reverse current is introduced, the electromagnetic mechanism 2 does not drive the pushing piece 3 to ascend, namely, the pushing piece 3 descends under the action of gravity or the electromagnetic mechanism 2 to be in contact with the static contact 5 positioned below to form a closed loop; in the process, because the pushing part 3 is located the spacing assembly 6, and the spacing assembly 6 can guide and prevent the pushing part 3 from dropping, the pushing part 3 is always moved along the straight line and can not drop, thereby ensuring the stability of the utility model.

In this embodiment, the position limiting assembly 6 includes two first position limiting guides 61, each first position limiting guide 61 includes a first supporting portion 611 and a first position limiting portion 612, the two first supporting portions 611 are respectively connected to the same side wall of the housing 1, the first position limiting portion 612 is disposed on the first supporting portion 611, and the two first position limiting portions 612 are respectively connected to two side walls of the housing 1 that are opposite to each other; two sides of the pushing element 3 are respectively abutted against the two first limiting parts 612, and the end surface of the pushing element 3 is abutted against the two first supporting parts 611.

Namely, the two first limiting guides 61 are respectively located at two sides of the pushing element 3, the two first limiting portions 612 limit the pushing element 3, and the first supporting portion 611 keeps a certain distance between the pushing element 3 and the inner side wall of the housing 1, so that the pushing element 3 is lifted more stably.

Specifically, in order to save raw materials, as another embodiment of the present embodiment, the position-limiting assembly 6 further includes two second position-limiting guide members 62, each second position-limiting guide member 62 includes a second supporting portion 621 and a second position-limiting portion 622, the two second supporting portions 621 are respectively connected to the same side wall of the housing 1, the second position-limiting portion 622 is disposed on the second supporting portion 621, and the two second position-limiting portions 622 are respectively connected to two side walls of the housing 1 that are opposite to each other; two sides of the pushing piece 3 are respectively abutted against the two second limiting parts 622, and the end surface of the pushing piece 3 is abutted against the two second supporting parts 621; a gap 63 is provided between the first limit guide 61 and the second limit guide 62 on the same side of the housing 1.

That is, in the present embodiment, the heights of the first limiting guide 61 and the second limiting guide 62 are relatively small, and the first limiting guide 61 and the second limiting guide 62 are provided at the same time through one side, and a gap 63 is left between the first limiting guide 61 and the second limiting guide 62, so that the limiting and guiding effects on the pushing member 3 can be achieved.

Specifically, the limiting assembly 6 further includes a top limiting member 64 disposed at the top of the housing 1, the top of the pushing member 3 is provided with a limiting groove 32, and the limiting groove 32 is used for assembling the top limiting member 64. That is, when the pushing element 3 rises to the top limiting element 64 and is completely accommodated in the limiting groove 32, the moving contact 4 can collide with the static contact 5 without causing excessive deviation of the static contact 5, thereby avoiding excessive bending of the static contact 5.

Specifically, the limiting assembly 6 further includes a bottom limiting member 65, the bottom limiting member 65 is located between the first limiting guide 61 and the second limiting guide 62, and the bottom limiting member 65 is configured to abut against the pushing member 3. The bottom limiting member 65 is used for limiting the pushing member 3 when the pushing member 3 descends, so as to prevent the pushing member 3 from falling off due to too much descending.

Preferably, the pushing member 3 is provided with a movable hole 31, and the bottom limiting member 65 is movably disposed in the movable hole 31, that is, when the pushing member 3 descends to the lowest height, the bottom limiting member 65 can abut against an inner top wall of the movable hole 31 to realize limiting, so as to prevent the pushing member 3 from being separated from the first limiting guide 61 due to overturning after descending to the lowest height, thereby achieving limiting effect.

In the present embodiment, the housing 1 includes a main shell 11 and a sealing member 12, the main shell 11 is a hollow structure with one side open, and the sealing member 12 is used for sealing the opening of the main shell 11; the limiting component 6 is arranged on the main shell 11, and the electromagnetic mechanism 2, the pushing element 3, the moving contact 4 and the two static contacts 5 are all arranged on the sealing element 12. Namely, after the electromagnetic mechanism 2, the pushing piece 3, the moving contact 4 and the static contact 5 are assembled on the sealing piece 12, the sealing piece 12 is arranged in the shell 1, thereby realizing the installation of the utility model.

Specifically, the sealing member 12 is provided with a stopper 121, and the stopper 121 is used for blocking the static contact 5 to prevent the moving contact from being adhered to the static contact 5, specifically: the stopper 121 is located between the movable contact and the upper static contact 5, so that when the movable contact moves to contact with the lower static contact 5, the stopper 121 blocks the upper static contact 5 to prevent the upper static contact 5 from bending along with the movement of the movable contact, thereby preventing the static contact 5 from being broken due to excessive bending times.

In addition, the static contact 5 located below is not easy to be adhered by the passive contact and bent under the action of gravity, but in order to avoid the bending of the static contact, in this embodiment, the sealing member 12 is provided with the limiting seat 122, the limiting seat 122 is provided with the positioning groove, the conducting strip connected to the static contact 5 located below is located in the positioning groove, and the conducting strip is prevented from being bent by clamping the conducting strip by the positioning groove, so that the conducting strip is protected.

Preferably, an extending portion 124 is disposed on one side of the limiting seat 122, the extending portion 124 is located right below the static contact 5, an elastic buffer 125 is further disposed between the extending portion 124 and the static contact 5, and an elastic buffer 125 is also disposed between an inner top wall of the main shell 11 and the static contact 5 located above, where the elastic buffer 125 may be an insulating spring or a silica gel, and is used to counteract a part of impact force at the moment when the moving contact collides with the static contact 5, so as to protect safety.

In this embodiment, the electromagnetic mechanism 2 includes a coil (not shown), a bracket 22, an iron core 23, a yoke 24, an armature 25, and a spring 26, the coil is wound on the bracket 22, the yoke 24 and the iron core 23 are both mounted on the bracket 22, the armature 25 is rotatably mounted on the bracket 22, and the spring 26 is used to prevent the armature 25 from being separated from the bracket 22.

Specifically, the armature 25 includes a magnetic portion 251 and a driving portion 252, the magnetic portion 251 and the driving portion 252 are arranged in a crossing manner, the iron core 23 is used for attracting the magnetic portion 251 when the coil is energized, and the driving portion 252 is connected to the pushing member 3 and is used for driving the pushing member 3 to move; the spring 26 includes a first fixing portion 261, a connecting portion 262 and a second fixing portion 263, two ends of the connecting portion 262 are respectively connected to the first fixing portion 261 and the second fixing portion 263, the first fixing portion 261 is mounted on the yoke 24 and located between the yoke 24 and the fixing portion, and the second fixing portion 263 abuts against the connection between the magnetic attraction portion 251 and the driving portion 252; the first fixing portion 261 is provided with a protrusion 264, and the protrusion 264 is used for supporting the driving portion 252. During action, the coil is electrified to generate a magnetic field, then the magnetic field is increased through the yoke 24 and is matched with the magnet to attract the magnetic attraction part 251 of the armature 25, so that the driving part 252 is tilted to drive the push piece 3 to ascend, and at the moment, the elastic sheet 26 is deformed; when the coil is powered off, the attraction force of the magnet to the armature 25 is smaller than the sum of the gravity of the push piece 3 and the driving part 252 and the reset force of the elastic sheet 26, so that the push piece 3 descends to realize the switching of the action.

Specifically, still be provided with corresponding arc extinguishing structure 111 in this main casing 11, be located the both sides of this moving contact, arc extinguishing structure 111 can adopt two blocks of magnet to constitute, also can adopt the structure described in this embodiment: the arc extinguishing structure 111 comprises a conductor 112, a control switch 113 and two air blowing pieces 114, wherein the two air blowing pieces 114 are respectively positioned at two sides of the movable contact, the two air blowing pieces 114 are opposite to each other, the conductor 112 and the two air blowing pieces 114 are electrically connected with the control switch, the conductor 112 is used for generating current due to magnetic field change when the electromagnetic mechanism 2 is electrified, the control switch 113 is used for triggering the corresponding air blowing pieces 114 to act according to the direction of induction current, so that the air blowing and arc extinguishing effects are achieved, the generation of electric arcs is avoided, the arc extinguishing structure 111 only works when the movable contact acts, and the working time of the arc extinguishing structure 111 is shortened to ensure the service life of the arc extinguishing structure. Specifically, the air blowing member 114 may be a micro air pump.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, but all the technical solutions of the present invention are within the scope of the present invention.

Claims (10)

1. The utility model provides an prevent electromagnetic relay that kicking block drops, includes the casing, set up in electromagnetic mechanism, the stripper, moving contact and two static contacts in the casing, the moving contact is located between two static contacts, electromagnetic mechanism warp the stripper drive the moving contact contradicts with one of them static contact and switches on its characterized in that: the inner side wall of the shell is provided with a limiting assembly, the pushing piece is arranged in the limiting assembly in a sliding mode, and the limiting assembly is used for guiding the pushing piece to slide along a straight line and preventing the pushing piece from being separated from the electromagnetic mechanism or the moving contact.

2. The electromagnetic relay according to claim 1, wherein: the limiting assembly comprises two first limiting guide pieces, each first limiting guide piece comprises a first bearing part and a first limiting part, the two first bearing parts are respectively connected to the same side wall of the shell, the first limiting parts are arranged on the first bearing parts, and the two first limiting parts are respectively connected to two side walls of the shell, which are opposite to each other; the two sides of the pushing piece are respectively abutted against the two first limiting parts, and the end face of the pushing piece is abutted against the two first supporting parts.

3. The electromagnetic relay according to claim 2, wherein: the limiting assembly further comprises two second limiting guide pieces, each second limiting guide piece comprises a second bearing part and a second limiting part, the two second bearing parts are respectively connected to the same side wall of the shell, the second limiting parts are arranged on the second bearing parts, and the two second limiting parts are respectively connected to two side walls of the shell, which are opposite to each other; two sides of the pushing piece are respectively abutted against the two second limiting parts, and the end face of the pushing piece is abutted against the two second supporting parts;

a gap is arranged between the first limit guide member and the second limit guide member which are positioned on the same side of the shell.

4. The electromagnetic relay according to claim 2 or 3, wherein: the limiting assembly further comprises a top limiting part arranged at the top of the shell, a limiting groove is formed in the top of the pushing part, and the limiting groove is used for assembling the top limiting part.

5. The electromagnetic relay according to claim 3, wherein: the limiting assembly further comprises a bottom limiting part, the bottom limiting part is located between the first limiting guide part and the second limiting guide part, and the bottom limiting part is used for abutting against the pushing part.

6. The electromagnetic relay according to claim 5, wherein: the pushing piece is provided with a movable hole, and the bottom limiting piece is movably arranged in the movable hole.

7. The electromagnetic relay according to claim 1, wherein: the shell comprises a main shell and a sealing piece, the main shell is of a hollow structure with an opening at one side, and the sealing piece is used for sealing the opening of the main shell; the limiting assembly is arranged on the main shell, and the electromagnetic mechanism, the pushing piece, the moving contact and the two fixed contacts are arranged on the sealing piece.

8. The electromagnetic relay according to claim 7, wherein: the sealing piece is provided with a stop block, and the stop block is used for stopping the static contact so as to prevent the moving contact from being adhered when being separated from the static contact.

9. The electromagnetic relay according to claim 1, wherein: the electromagnetic mechanism comprises a coil, a support, an iron core, a yoke, an armature and an elastic sheet, wherein the coil is wound on the support, the yoke and the iron core are arranged on the support, the armature is rotatably arranged on the support, and the elastic sheet is used for preventing the armature from being separated from the support.

10. The electromagnetic relay according to claim 9, wherein: the armature iron comprises a magnetic part and a driving part, the magnetic part and the driving part are arranged in a crossed mode, the iron core is used for attracting the magnetic part when the coil is electrified, and the driving part is connected with the pushing part and used for driving the pushing part to move; the elastic sheet comprises a first fixing part, a connecting part and a second fixing part, two ends of the connecting part are respectively connected to the first fixing part and the second fixing part, the first fixing part is arranged on the yoke and positioned between the yoke and the fixing part, and the second fixing part is abutted to the joint of the magnetic suction part and the driving part;

the first fixing part is provided with a bulge, and the bulge is used for supporting the driving part.

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