阅读说明：本技术 高耐电压电磁继电器 (High voltage-resistant electromagnetic relay ) 是由 邱文辉 张彭春 于 2021-02-10 设计创作，主要内容包括：本发明涉及一种高耐电压电磁继电器,其底座在触头安装部的内侧形成与底座一体的绝缘罩,绝缘罩向触头安装部的反方向延伸并覆盖底座,绝缘罩内形成开口向外的线圈腔,线圈架横置在线圈腔内,轭铁设置在线圈腔内,轭铁内端与线圈腔内部的线圈架铁芯内端连接,轭铁外端延伸到线圈腔的开口处,衔铁铰接在线圈腔开口处的轭铁外端上,衔铁与开口处的线圈架铁芯外端对应配合,衔铁顶端设置有推动架,推动架横跨在绝缘罩外侧,推动架的末端与衔铁顶端铰接,推动架的顶端与动触头联动连接。本发明通过绝缘罩和推动架的设置加大了负载和线圈端的爬电距离,提高了耐电压性能。(The invention relates to a high voltage-resistant electromagnetic relay, wherein an insulating cover integrated with a base is formed on the inner side of a contact mounting part of the base, the insulating cover extends in the opposite direction of the contact mounting part and covers the base, a coil cavity with an outward opening is formed in the insulating cover, a coil rack is transversely arranged in the coil cavity, a yoke is arranged in the coil cavity, the inner end of the yoke is connected with the inner end of a coil rack iron core in the coil cavity, the outer end of the yoke extends to the opening of the coil cavity, an armature is hinged on the outer end of the yoke at the opening of the coil cavity, the armature is correspondingly matched with the outer end of the coil rack iron core at the opening, a pushing frame is arranged at the top end of the armature, the pushing frame stretches across the outer side of the insulating cover, the tail end of. According to the invention, through the arrangement of the insulating cover and the pushing frame, the creepage distance between the load and the coil end is increased, and the voltage resistance is improved.)

1. The utility model provides a high withstand voltage electromagnetic relay, includes base, lid shell outside the base and coil former, yoke, armature, moving contact, the static contact of setting on the base, and the iron core has been worn to put in coil former inside, has coiled its characterized in that on the coil former: the coil frame is transversely arranged in the coil cavity, a yoke is arranged in the coil cavity, the inner end of the yoke is connected with the inner end of a coil frame iron core in the coil cavity, the outer end of the yoke extends to the opening of the coil cavity, an armature is hinged to the outer end of the yoke at the opening of the coil cavity, the armature is correspondingly matched with the outer end of the coil frame iron core at the opening, a pushing frame is arranged at the top end of the armature, the pushing frame stretches across the outer side of the insulating frame, the tail end of the pushing frame is hinged to the top end of the armature, and the top end of the pushing frame is connected with the moving contact in a linkage mode.

2. The high withstand voltage electromagnetic relay according to claim 1, characterized in that: and a pressure spring is connected between the armature and the yoke, a pressure spring groove is formed on the armature, one end of the pressure spring is fixedly connected to the yoke, a pressure tongue extending inwards is formed at the other end of the pressure spring, the pressure tongue bends and extends into the pressure spring groove, and an inclined plane matched with the bending angle of the pressure tongue is formed in the pressure spring groove.

3. The high withstand voltage electromagnetic relay according to claim 1 or 2, characterized in that: the yoke is arranged at the lower side of the coil frame, and the pushing frame is arranged above the insulating cover.

4. The high withstand voltage electromagnetic relay according to claim 3, characterized in that: the center of the pushing frame forms a positioning groove, the upper side surface of the insulating cover forms a front positioning block and a rear positioning block which are matched with the positioning groove respectively, and the pushing frame is arranged outside the front positioning block and the rear positioning block.

5. The high withstand voltage electromagnetic relay according to claim 1 or 2, characterized in that: two static contact grooves are formed in one side of a contact mounting portion of the base, a movable contact groove is formed in the other side of the contact mounting portion of the base, static contacts are all inserted into the two static contact grooves, a movable contact is inserted into the movable contact groove, the upper portion of the movable contact transversely extends to the static contacts between the two static contacts, contact pins formed at the lower ends of the movable contact and the static contacts penetrate through the base and are exposed out of the base, coil lead ports are formed in the two sides of the base at the opening of a coil cavity, a lead frame is arranged at the positions of the coil lead ports of the coil frame, coil lead pins penetrate through the lead frame, the lower ends of the coil lead pins are exposed out of the lead frame.

6. The high withstand voltage electromagnetic relay according to claim 5, characterized in that: the top of the pushing frame is provided with a mandril, a mandril hole is formed in the movable contact, the mandril penetrates through the mandril hole, and the top of the pushing frame abuts against the movable contact to push the movable contact to move.

7. The high withstand voltage electromagnetic relay according to claim 4, characterized in that: the upper side surface of the insulating cover forms a bayonet at the opening of the coil cavity, a clamping block matched with the bayonet is formed on the coil frame, and the coil frame is connected with the base through the matching of the clamping block and the bayonet.

8. The high withstand voltage electromagnetic relay according to claim 4, characterized in that: two counter bores are formed in the shell, and the insides of the two counter bores are sunk in the positioning grooves between the front positioning blocks and the rear positioning blocks.

9. The high withstand voltage electromagnetic relay according to claim 1 or 2, characterized in that: the iron core at the center of the coil frame is cylindrical, the sectional area of the outer end of the iron core is increased to form a suction surface, the inner end of the iron core penetrates through the yoke iron, an iron core groove is formed in the coil cavity corresponding to the iron core exposed out of the yoke iron, and the inner end of the iron core is placed in the iron core groove.

10. The high withstand voltage electromagnetic relay according to claim 3, characterized in that: the base is provided with a positioning hole at the bottom of the coil cavity, the positioning hole forms an insertion groove towards the opening direction of the coil cavity, the bottom of the yoke is provided with a positioning column, and the positioning column slides into the positioning hole through the insertion groove and is inserted into the positioning hole to realize positioning.

Technical Field

The invention relates to an electromagnetic relay, in particular to a high voltage-resistant electromagnetic relay with long creepage distance.

Background

An electromagnetic relay is an electronic control device which uses smaller current and lower voltage to control larger current and higher voltage, is usually applied to an automatic control circuit, and plays the roles of automatic regulation, safety protection, circuit conversion and the like in the circuit. The rated current of the electromagnetic relay is usually limited by the volume, the electromagnetic relay with larger rated current has larger volume, but the electromagnetic relay with larger volume is limited by space in most products, and the electromagnetic relay with large volume can not be used, so that the design of the electromagnetic relay with large current and small volume is very necessary.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a high withstand voltage electromagnetic relay with a low height, a large current, a long life, and a small volume.

In order to achieve the above purpose, the invention adopts a high voltage-resistant electromagnetic relay, which comprises a base, a shell covered outside the base, and a coil rack, a yoke, an armature, a moving contact and a static contact which are arranged on the base, wherein the coil rack is penetrated with an iron core, a coil is wound on the coil rack, one end of the base forms a contact mounting part, the moving contact and the static contact are inserted in the contact mounting part, the base forms an insulating cover integrated with the base on the inner side of the contact mounting part, the insulating cover extends to the opposite direction of the contact mounting part and covers the base, a coil cavity with an outward opening is formed in the insulating cover, the coil rack is transversely arranged in the coil cavity, the inner end of the yoke is arranged in the coil cavity, the yoke is connected with the inner end of the coil rack iron core inside the coil cavity, the outer end of the yoke extends to the opening of the coil cavity, the armature is, the top end of the armature is provided with a pushing frame, the pushing frame stretches across the outer side of the insulating cover, the tail end of the pushing frame is hinged with the top end of the armature, and the top end of the pushing frame is in linkage connection with the moving contact.

The invention has the advantages that the coil end circuit with small current is wrapped in the coil cavity, the coil cavity is insulated from the load end with large current through the insulating cover, the opening of the coil cavity is far away from the moving contact and the static contact, the moving contact and the armature which are far away from each other are connected outside the insulating cover through the pushing frame, the linkage of the moving contact and the armature is realized, the creepage distance between the load and the coil end is increased through the arrangement of the insulating cover and the pushing frame, and the voltage resistance is improved.

The invention is further arranged that a pressure spring is connected between the armature and the yoke, a pressure spring groove is formed on the armature, one end of the pressure spring is fixedly connected to the yoke, a pressure tongue extending inwards is formed at the other end of the pressure spring, the pressure tongue bends and extends into the pressure spring groove, and an inclined plane matched with the bending angle of the pressure tongue is formed in the pressure spring groove. The arrangement of the pressure spring piece can effectively prevent the armature from shaking up, down, left and right, and meanwhile, the pressure of the pressure spring piece on the armature is small, so that the mechanical life is long.

The invention is further arranged that the yoke is arranged at the lower side of the coil frame, and the pushing frame is arranged above the insulating cover. The yoke and the pushing frame are convenient to assemble.

The invention is further arranged that the center of the pushing frame forms a positioning groove, the upper side surface of the insulating cover forms a front positioning block and a rear positioning block which are matched with the positioning groove respectively, and the pushing frame is arranged outside the front positioning block and the rear positioning block. The pushing frame is limited to move back and forth on the front positioning block and the rear positioning block above the insulating cover, so that the left and right shaking is avoided, and the stability of a product is improved.

The invention is further arranged that one side of a contact mounting part of the base is provided with two static contact grooves, the other side is provided with a movable contact groove, fixed contacts are inserted in the two static contact grooves, a movable contact is inserted in the movable contact groove, the upper part of the movable contact transversely extends to the fixed contacts and between the two fixed contacts, contact pins formed at the lower ends of the movable contact and the fixed contacts penetrate through the base and are exposed outside the base, coil lead ports are formed at two sides of the base at an opening of a coil cavity, a lead frame is arranged at the position of the coil lead port of the coil frame, a coil lead needle penetrates through the lead frame, the lower end of the coil lead needle is exposed outside the lead frame, and the coil lead needle and the contact pins. The distance between the coil lead needle and the contact pin is long, the creepage distance is long, and the voltage resistance is ensured.

The invention is further provided with a mandril at the top end of the pushing frame, a mandril hole is formed on the moving contact, the mandril penetrates through the mandril hole, and the top end of the pushing frame is abutted against the moving contact to push the moving contact to move. The pushing frame is connected with the moving contact through the ejector rod, so that the assembly is convenient, and the connection is stable and reliable.

The invention is further arranged that a bayonet is formed on the upper side surface of the insulating cover at the opening of the coil cavity, a clamping block matched with the bayonet is formed on the coil frame, and the coil frame is connected with the base through the matching of the clamping block and the bayonet. The coil rack and the base are connected through the matching of the clamping block and the bayonet, and the connection is convenient and reliable.

The invention is further arranged that two counter bores are formed on the shell, and the insides of the two counter bores are sunk in the positioning groove between the front positioning block and the rear positioning block. The positioning groove and the positioning block provide abdication for the counter bore, and the counter bore can not limit the forward and backward movement of the pushing frame.

The invention is further arranged that the iron core at the center of the coil frame is cylindrical, the sectional area of the outer end of the iron core is enlarged to form an attraction surface, the inner end of the iron core penetrates through the yoke iron, the inner part of the coil cavity corresponds to the iron core exposed out of the yoke iron to form an iron core groove, and the inner end of the iron core is placed in the iron core groove. The cylindrical iron core improves the magnetic efficiency of the coil, the generated magnetic force is larger, and the coil cavity is convenient for the arrangement of the coil.

The invention is further provided with a positioning hole arranged at the bottom of the coil cavity of the base, the positioning hole forms an insertion groove towards the opening direction of the coil cavity, the bottom of the yoke is provided with a positioning column, and the positioning column slides into the positioning hole through the insertion groove and is inserted into the positioning hole to realize positioning.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present invention.

Fig. 2 is a schematic illustration of an embodiment of the present invention with the housing removed.

Fig. 3 is an exploded view of an embodiment of the present invention with the housing removed.

Fig. 4 is a schematic illustration of an embodiment of the present invention with the housing removed.

Fig. 5 is a schematic view of a base according to an embodiment of the invention.

Detailed Description

As shown in fig. 1-5, a specific embodiment of the present invention is a high voltage-resistant electromagnetic relay, which includes a base 1, a housing 2 covering the base 1, and a coil frame 3, a yoke 4, an armature 5, a movable contact 6, a fixed contact 7 and a pressure spring 8 disposed on the base 1, wherein an iron core 31 penetrates through the coil frame 3, a coil 30 is wound on the coil frame 3, one end of the base 1 forms a contact mounting portion 11, two fixed contact grooves 12 are formed on one side of the contact mounting portion 11 of the base 1, a movable contact groove 13 is formed on the other side, the fixed contact 7 is inserted into each of the two fixed contact grooves 12, the movable contact 6 is inserted into the movable contact groove 13, the upper portion of the movable contact 6 extends transversely to the direction of the fixed contact 7 to between the two fixed contacts 7, contact pins (61, 71) formed at the lower ends of the movable contact 6 and the fixed contact 7 penetrate through the base 1 and are exposed outside of the base 1, the base 1 forms an insulating cover 14, the insulating cover 14 extends in the opposite direction of the contact mounting part 11 and covers the base 1, a coil cavity 15 with an outward opening is formed in the insulating cover 14, the coil frame 3 is transversely arranged in the coil cavity 15, the yoke iron 4 is arranged in the coil cavity 15, the inner end of the yoke iron 4 is connected with the inner end of an iron core 31 of the coil frame 3 in the coil cavity 15, the iron core 31 at the center of the coil frame 3 is cylindrical, the sectional area of the outer end of the iron core 31 is enlarged to form an attraction surface 32, the inner end of the iron core 31 penetrates through the yoke iron 4, the inner end of the coil cavity 15 corresponds to the iron core 31 exposed out of the yoke iron 4 to form an iron core groove 16, the inner end of the iron core 31 is arranged in the iron core groove 16, the yoke iron 4 extends outwards from the lower side of the coil frame 3 to the opening of the coil cavity 15, the armature 5 is hinged on the outer end of the yoke iron 4 at the opening of the coil cavity 15, the push frame 9 stretches across the upper side of the insulating cover 14, the tail end of the push frame 9 is hinged with the top end of the armature 5, the top end of the push frame 9 is in linkage connection with the movable contact 6, the pressure spring piece 8 is connected between the armature 5 and the yoke 4, a pressure spring groove 51 is formed in the armature 5, one end of the pressure spring piece 8 is fixedly connected to the yoke 4, a pressure spring tongue 81 extending inwards is formed in the other end of the pressure spring piece, the pressure spring tongue 81 bends and extends into the pressure spring groove 51, an inclined plane matched with the bending angle of the pressure spring tongue 81 is formed in the pressure spring groove 51, coil lead openings 17 are formed in two sides of the opening of the coil cavity 15 of the base 1, a lead frame 33 is arranged at the coil lead opening 17 of the coil frame 3, a coil lead needle 34 penetrates through the lead frame 33, the lower end of the coil lead needle 34 is exposed out of the lead frame 33, and the coil lead.

The center of pushing away frame 9 forms constant head tank 91, the side forms preceding locating piece 18 and the back locating piece 19 with constant head tank 91 adaptation respectively on the insulating boot 14, pushing away frame 9 sets up outside preceding locating piece 18 and back locating piece 19, form two counter bores 21 on the shell 2, the inside of two counter bores 21 sinks to be put in the constant head tank 91 between preceding locating piece 18 and the back locating piece 19, pushing away frame 9's top is provided with ejector pin 92, form ejector pin hole 62 on the moving contact 6, ejector pin 92 wears in ejector pin hole 62, pushing away frame 9's top is supported and is promoted moving contact 6 and remove on moving contact 6. A bayonet 10 is formed on the upper side face of the insulating cover 14 at the opening of the coil cavity 15, a clamping block 35 matched with the bayonet 10 is formed on the coil frame 3, and the coil frame 3 is connected with the base 1 through the matching of the clamping block 35 and the bayonet 10. The base 1 is provided with a positioning hole 151 at the bottom of the coil cavity 15, the positioning hole 151 forms an insertion groove 152 towards the opening direction of the coil cavity 15, the bottom of the yoke 4 is provided with a positioning column 41, and the positioning column 41 slides to the positioning hole 151 through the insertion groove 152 and is inserted into the positioning hole 151 to realize positioning.

The above-described embodiment is one embodiment of the present invention, and other variations that do not depart from the spirit of the claims are intended to be within the scope of the invention.