阅读说明：本技术 一种线圈端子改进型电磁继电器 (Coil terminal improved electromagnetic relay ) 是由 唐俊平 于 2021-02-07 设计创作，主要内容包括：本发明涉及继电器技术领域,尤其公开了一种线圈端子改进型电磁继电器,包括绝缘壳,设置于绝缘壳内的电磁铁、衔铁单元、弹性件、导电板及两个导电端子；电磁铁包括位于绝缘壳内的绝缘骨架、套设在绝缘骨架外侧的线圈单元、设置于绝缘骨架的两个电源端子,电源端子具有卡持平板、自卡持平板弯折而成的焊线部及焊脚部,焊线部具有用于容设线圈单元的端部的穿孔,焊脚部用于插入外界的电路板内并具有用于容设焊锡的容锡凹槽；借助穿孔容设的焊锡将线圈单元与焊线部稳固焊接在一起,借助容锡凹槽容设的焊锡将焊脚部与电路板稳固焊接在一起,提升电源端子的连接稳定性,避免电源端子连接不牢而损坏。(The invention relates to the technical field of relays, and particularly discloses an electromagnetic relay with an improved coil terminal, which comprises an insulating shell, an electromagnet, an armature unit, an elastic piece, a conductive plate and two conductive terminals, wherein the electromagnet, the armature unit, the elastic piece, the conductive plate and the two conductive terminals are arranged in the insulating shell; the electromagnet comprises an insulating framework positioned in the insulating shell, a coil unit sleeved outside the insulating framework and two power terminals arranged on the insulating framework, wherein each power terminal is provided with a clamping flat plate, a welding wire part formed by bending the clamping flat plate and a welding leg part; the coil unit and the welding wire part are firmly welded together by the aid of the soldering tin accommodated in the through holes, the welding wire part and the circuit board are firmly welded together by the aid of the soldering tin accommodated in the tin accommodating groove, connection stability of the power supply terminal is improved, and damage caused by infirm connection of the power supply terminal is avoided.)

1. An improved electromagnetic relay of a coil terminal comprises an insulating shell, an electromagnet, an armature unit, an elastic piece, a conductive plate and two conductive terminals, wherein the electromagnet, the armature unit, the elastic piece, the conductive plate and the two conductive terminals are arranged in the insulating shell; the method is characterized in that: the electromagnet comprises an insulating framework, a coil unit and two power terminals, wherein the insulating framework is positioned in an insulating shell, the coil unit is sleeved on the outer side of the insulating framework, the two power terminals are arranged on the insulating framework, each power terminal is provided with a clamping flat plate, a welding wire part and a welding leg part, the clamping flat plate is bent from the clamping flat plate, the clamping flat plate is clamped and inserted in a clamping groove of the insulating framework, the welding wire part is provided with a through hole used for accommodating the end part of the coil unit, and the welding leg part is used for being inserted into an external circuit board and is.

2. The coil terminal improved electromagnetic relay according to claim 1, characterized in that: the number of the through holes is multiple, the conductors of the coil units sequentially penetrate through the through holes one by one in an S shape and are wound on the welding wire parts, and the welding tin for welding the welding wire parts and the conductors of the coil units is arranged in the through holes.

3. The coil terminal improved electromagnetic relay according to claim 1, characterized in that: the insulating framework is provided with a guide hole, the armature unit comprises a push rod piece which is arranged in a telescopic way relative to the insulating framework, an armature piece which is arranged at one end of the push rod piece and movably accommodated in the guide hole, and the conductive plate is arranged at the other end of the push rod piece; the elastic element is a spring element, and the elastic element is sleeved outside the push rod element and is abutted against the armature element.

4. The coil terminal improved electromagnetic relay according to claim 3, characterized in that: the insulating skeleton has a plurality of rolling plastics spin, and the protruding lead that stretches out of plastics spin is downthehole, and the rolling conflict of plastics spin is on armature spare's the outside, and a plurality of plastics spin encircle armature spare and set up.

5. The coil terminal improved electromagnetic relay according to claim 1, characterized in that: the insulating cover is detachably connected with the insulating shell, the insulating shell is provided with an accommodating cavity for accommodating the electromagnet, the armature unit, the elastic piece, the conductive plate and the two conductive terminals, and the insulating cover covers an opening of the accommodating cavity; the insulating cover is provided with a partition plate convenient for a user to hold, and the other ends of the conductive terminals protrude out of the insulating cover and are respectively positioned on two sides of the partition plate.

6. The coil terminal improved electromagnetic relay according to claim 5, characterized in that: the insulation cover is provided with an inserting ring inserted into the accommodating cavity and an annular convex rib used for abutting and stopping the insulation shell, a plurality of glue accommodating grooves surrounding the central axis of the insulation shell are formed between the inserting ring and the insulation shell, and the glue accommodating grooves are used for accommodating glue for sealing a gap between the insulation shell and the inserting ring.

7. The coil terminal improved electromagnetic relay according to claim 5, characterized in that: the armature unit comprises a ceramic shell positioned in the insulating shell, and one ends of the conductive plate and the conductive terminal are positioned in the ceramic shell; the two sides of the ceramic shell, which are far away from each other, are provided with blind grooves, permanent magnets are arranged in the blind grooves, the insulating shell or the insulating cover is used for covering the openings of the blind grooves, and the permanent magnets on the two sides of the ceramic shell are used for extinguishing electric arcs generated when the conductive plates are in contact with or separated from the conductive terminals.

8. The coil terminal improved electromagnetic relay according to claim 1, characterized in that: the two ends of the current conducting plate are respectively provided with a sunken area, and the sunken areas at the two ends of the current conducting plate are respectively matched with the two conductive terminals.

9. The coil terminal improved electromagnetic relay according to claim 1, characterized in that: the outer side of the insulating shell is provided with two fixing lugs, the two fixing lugs are respectively positioned at two sides of the insulating shell, which are far away from each other, the fixing lugs are provided with through holes penetrating through the fixing lugs, reinforced C rings are arranged in the through holes, an external fixing piece fixes the fixing lugs on an external component through the through holes, and the reinforced C rings are clamped between the fixing piece and the side surface of an inner hole of the through holes.

10. The coil terminal improved electromagnetic relay according to claim 9, characterized in that: the outside of insulating casing is equipped with the rib spare, is formed with the positioning groove between rib spare and a fixed lug, and the positioning groove is used for holding external setting element.

Technical Field

The invention relates to the technical field of relays, and particularly discloses an electromagnetic relay with an improved coil terminal.

Background

The electromagnetic relay is one of numerous relays, and the electromagnetic coil of the electromagnetic relay needs to be conducted to an external power supply source by means of a conductive piece.

Disclosure of Invention

In order to overcome the defects and shortcomings in the prior art, the invention aims to provide an electromagnetic relay with an improved coil terminal.

In order to achieve the purpose, the invention discloses an electromagnetic relay with an improved coil terminal, which comprises an insulating shell, an electromagnet, an armature unit, an elastic piece, a current conducting plate and two current conducting terminals, wherein the electromagnet, the armature unit, the elastic piece, the current conducting plate and the two current conducting terminals are arranged in the insulating shell; the electromagnet comprises an insulating framework, a coil unit and two power terminals, wherein the insulating framework is positioned in an insulating shell, the coil unit is sleeved on the outer side of the insulating framework, the two power terminals are arranged on the insulating framework, each power terminal is provided with a clamping flat plate, a welding wire part and a welding leg part, the clamping flat plate is bent from the clamping flat plate, the clamping flat plate is clamped and inserted in a clamping groove of the insulating framework, the welding wire part is provided with a through hole used for accommodating the end part of the coil unit, and the welding leg part is used for being inserted into an external circuit board and is.

The coil unit comprises a plurality of through holes, conductors of the coil unit sequentially penetrate through the through holes one by one in an S shape and are wound on a welding wire part, and soldering tin for welding the welding wire part and the conductors of the coil unit is arranged in the through holes.

The armature unit comprises a push rod piece which is arranged in a telescopic way relative to the insulating framework, an armature piece which is arranged at one end of the push rod piece and movably accommodated in the guide hole, and a conductive plate which is arranged at the other end of the push rod piece; the elastic element is a spring element, and the elastic element is sleeved outside the push rod element and is abutted against the armature element.

The insulating framework is provided with a plurality of rolling plastic rolling balls, the plastic rolling balls extend out of the guide holes, the plastic rolling balls roll and abut against the outer side of the armature piece, and the plurality of plastic rolling balls are arranged around the armature piece.

The insulating cover is detachably connected with the insulating shell, the insulating shell is provided with an accommodating cavity for accommodating the electromagnet, the armature unit, the elastic piece, the conductive plate and the two conductive terminals, and the insulating cover covers an opening of the accommodating cavity; the insulating cover is provided with a partition plate convenient for a user to hold, and the other ends of the conductive terminals protrude out of the insulating cover and are respectively positioned on two sides of the partition plate.

The insulation cover is provided with an inserting ring inserted into the accommodating cavity and an annular convex rib used for abutting and stopping the insulation shell, a plurality of glue accommodating grooves surrounding the central axis of the insulation shell are formed between the inserting ring and the insulation shell, and the glue accommodating grooves are used for accommodating glue for sealing a gap between the insulation shell and the inserting ring.

The armature unit comprises a ceramic shell positioned in the insulating shell, and one ends of the conductive plate and the conductive terminal are positioned in the ceramic shell; the two sides of the ceramic shell, which are far away from each other, are provided with blind grooves, permanent magnets are arranged in the blind grooves, the insulating shell or the insulating cover is used for covering the openings of the blind grooves, and the permanent magnets on the two sides of the ceramic shell are used for extinguishing electric arcs generated when the conductive plates are in contact with or separated from the conductive terminals.

The two ends of the current conducting plate are respectively provided with a sunken area, and the sunken areas at the two ends of the current conducting plate are respectively matched with the two conductive terminals.

The outer side of the insulating shell is provided with two fixing lugs, the two fixing lugs are respectively positioned on two sides of the insulating shell, which are far away from each other, each fixing lug is provided with a through hole penetrating through the corresponding fixing lug, a reinforcing C ring is arranged in each through hole, an external fixing piece fixes the corresponding fixing lug on an external component through the through holes, and the reinforcing C ring is clamped between the corresponding fixing piece and the side face of an inner hole of each through hole.

The outer side of the insulating shell is provided with a clamping rib piece, a positioning clamping groove is formed between the clamping rib piece and one fixing lug, and the positioning clamping groove is used for accommodating an external positioning piece.

The invention has the beneficial effects that: in the use of power supply terminal, hold the soldering tin of establishing with the help of the perforation and with coil unit and the firm welding of bonding wire portion together, hold the soldering tin of establishing with the help of holding the tin recess and with the firm welding of bonding wire portion and circuit board together, promote the connection stability of power supply terminal, avoid the power supply terminal to connect not firmly and damage.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

fig. 3 is a schematic perspective view of the power terminal of the present invention.

The reference numerals include:

1-insulating shell 2-electromagnet 3-conducting plate

4-conductive terminal 5-insulating frame 6-power terminal

7-clamping plate 8-welding wire part 9-welding foot part

11-through hole 12-tin containing groove 13-insulating cover

14-partition 15-inserting ring 16-annular convex rib

17-ceramic shell 18-permanent magnet 19-fixed lug

21-reinforcing C-ring 22-rib member.

Detailed Description

For the 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.

Referring to fig. 1 to 3, an electromagnetic relay with an improved coil terminal according to the present invention includes an insulating housing 1, an electromagnet 2 installed in the insulating housing 1, an armature unit, an elastic member, a conductive plate 3, and two conductive terminals 4, wherein the armature unit is movably disposed on the electromagnet 2 or the insulating housing 1, one end of the conductive terminal 4 is disposed in the insulating housing 1, the other end of the conductive terminal 4 protrudes out of the insulating housing 1, the conductive plate 3 is installed on the armature unit, the electromagnet 2 drives the armature unit to drive the conductive plate 3 to move and contact and conduct the two conductive terminals 4, and the elastic member drives the armature unit to reset to drive the conductive plate 3 to move and separate and disconnect the conductive terminal 4.

The electromagnet 2 comprises an insulation framework 5 positioned in an insulation shell 1, a coil unit sleeved on the outer side of the insulation framework 5, and two power terminals 6 arranged on the insulation framework 5, wherein the insulation framework 5 is formed by injection molding of insulation plastics, each power terminal 6 is provided with a clamping flat plate 7, a welding wire part 8 formed by bending the clamping flat plate 7 and a welding pin part 9, the clamping flat plate 7 is a substantially rectangular flat plate, the clamping flat plate 7 is clamped and inserted in a clamping groove of the insulation framework 5, the clamping flat plate 7 is provided with interference protrusions for abutting against the side surface of an inner groove of the clamping groove, the welding wire part 8 is provided with through holes 11 for accommodating the end parts of the coil unit, and the welding pin part 9 is used for being inserted into an external circuit board and is provided with a tin accommodating groove 12.

In the use of power supply terminal 6, hold the soldering tin of establishing with the help of perforation 11 and weld coil unit and bonding wire portion 8 together firmly, hold the soldering tin of establishing with the help of holding tin recess 12 and weld leg portion 9 and circuit board together firmly, promote the connection stability of power supply terminal 6, avoid power supply terminal 6 to connect not firmly and damage.

Preferably, the number of the through holes 11 is plural, the conductors of the coil unit sequentially pass through the through holes 11 one by one in an S shape and are wound on the welding wire portion 8, by the arrangement of the plural through holes 11, after the conductors of the coil unit are wound on the welding wire portion 8, the friction force between the welding wire portion 8 and the conductors of the coil unit is increased, the probability that the conductors of the coil unit are separated from the welding wire portion 8 is reduced, the soldering tin for welding the welding wire portion 8 and the conductors of the coil unit is contained in the through holes 11, and the conductors of the coil unit are firmly welded on the welding wire portion 8 by the soldering tin.

According to actual needs, the number of the tin containing grooves 12 can be multiple, the multiple tin containing grooves 12 are arranged along the length direction of the fillet part 9, and preferably, the two sides of the fillet part 9, which are far away from each other, are provided with the tin containing grooves 12.

The insulating framework 5 is provided with a guide hole, preferably, the guide hole penetrates through the insulating framework 5, the armature unit comprises a push rod piece which is telescopically arranged relative to the insulating framework 5, an armature piece which is arranged at one end of the push rod piece and movably accommodated in the guide hole, and the conductive plate 3 is arranged at the other end of the push rod piece; the elastic element is a spring element, and the elastic element is sleeved outside the push rod element and is abutted against the armature element. By guiding the moving direction of the armature piece, the moving direction of the armature unit is accurately limited, and the armature unit is prevented from being inclined in the moving process.

The insulating framework 5 is provided with a plurality of rolling plastic rolling balls which extend out of the guide holes, the plastic rolling balls roll and abut against the outer side of the armature piece, and the plurality of plastic rolling balls are arranged around the armature piece. By means of the arrangement of the plastic rolling balls, sliding friction between the armature piece and the insulating framework 5 is converted into rolling friction, friction force between the armature piece and the insulating framework 5 is reduced, and the interference of abrasion dust generated by relative friction between the armature piece and the insulating framework 5 on normal use of the relay is reduced.

The insulating shell 1 is provided with an accommodating cavity for accommodating the electromagnet 2, the armature unit, the elastic piece, the conductive plate 3 and the two conductive terminals 4, and the insulating cover 13 covers an opening of the accommodating cavity; the insulating cover 13 has a partition 14 for the user to hold, and the other ends of the conductive terminals 4 protrude from the insulating cover 13 and are respectively located at the left and right sides of the partition 14.

The parts are packaged in the insulating shell 1 by means of the arrangement of the insulating cover 13, and through the arrangement of the partition plate 14, a user can conveniently hold the partition plate 14 with fingers to conveniently move the whole relay, and on the other hand, the two conductive terminals 4 are separated by means of the partition plate 14, so that the creepage distance between the two conductive terminals 4 is increased, and the use safety of the two conductive terminals 4 is ensured.

The insulation cover 13 is provided with an insertion ring 15 inserted into the accommodating cavity and an annular convex rib 16 used for abutting and stopping the insulation shell 1, a plurality of glue accommodating grooves surrounding the central axis of the insulation shell 1 are formed between the insertion ring 15 and the insulation shell 1, and the glue accommodating grooves are used for accommodating glue for sealing a gap between the insulation shell 1 and the insertion ring 15. During the in-service use, with glue injection in the appearance gluey groove between grafting ring 15 and insulating casing 1, the appearance gluey groove is used for increasing the glue yield between insulating casing 1 and insulating cover 13, on the one hand firmly bonds both together, on the other hand realizes the abundant sealing to both clearances.

The armature unit comprises a ceramic shell 17 positioned in the insulating shell 1, one end of the conductive plate 3 and one end of the conductive terminal 4 are both positioned in the ceramic shell 17, and the conductive plate 3 and the conductive terminal 4 are protected by the ceramic shell 17; the two sides of the ceramic shell 17, which are far away from each other, are provided with blind grooves, permanent magnets 18 are arranged in the blind grooves, the insulating shell 1 or the insulating cover 13 is used for covering the openings of the blind grooves, and the permanent magnets 18 on the two sides of the ceramic shell 17 are used for extinguishing electric arcs generated when the conductive plate 3 is in contact with or separated from the conductive terminal 4.

The permanent magnet 18 is used for rapidly extinguishing the electric arc generated when the conductive plate 3 is contacted with or separated from the conductive terminal 4, so that the probability of burning the conductive plate 3 and the conductive terminal 4 by the electric arc is reduced, and the service lives of the conductive plate 3 and the conductive terminal 4 are prolonged. The permanent magnet 18 is blocked and abutted by the side surface of the inner groove of the blind groove, so that the permanent magnet 18 is prevented from directly contacting the conductive plate 3 or the conductive terminal 4 and being used badly.

The two ends of the conductive plate 3 are respectively provided with a sunken area, and the sunken areas at the two ends of the conductive plate 3 are respectively matched with the two conductive terminals 4. By means of the arrangement of the sunken areas, in the use process that the conductive plate 3 and the conductive terminal 4 are frequently in contact connection or separated disconnection, poor use caused by material transfer of the conductive plate 3 and the conductive terminal 4 is reduced, and the service life of the relay is prolonged.

The outside of the insulating shell 1 is provided with two fixing lugs 19, the two fixing lugs 19 are respectively positioned at two sides of the insulating shell 1 far away from each other, preferably, the two fixing lugs 19 are respectively positioned at opposite corners of the insulating shell 1, the two fixing lugs 19 are arranged in a coplanar manner, the fixing lugs 19 are provided with through holes 11 penetrating through the fixing lugs 19, the through holes 11 are internally provided with reinforcing C rings 21, an external fixing piece fixes the fixing lugs 19 on an external member through the through holes 11, and the reinforcing C rings 21 are clamped between the fixing piece and the inner hole side surface of the through holes 11.

In practical use, the fixing piece penetrates through the fixing lug 19 and fixes the insulating shell 1 on an external object, and the strength of the fixing lug 19 is increased by means of the arrangement of the reinforcing C ring 21, so that the damage of the insulating shell 1 caused by the fact that the fixing piece presses the fixing lug 19 is avoided, and the service life of the insulating shell 1 is prolonged.

The outside of the insulating shell 1 is provided with a clamping rib member 22, and a positioning clamping groove is formed between the clamping rib member 22 and one of the fixing lugs 19 and is used for accommodating an external positioning member. In the installation of relay, in the rated position spare disect insertion positioning groove of external component, realize the quick counterpoint to insulating casing 1, promote the installation effectiveness and the installation yield of relay.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.