CN112786373A - Insulation isolation type electromagnetic relay - Google Patents

Abstract

The invention relates to the technical field of electric control, in particular to an insulated isolated electromagnetic relay, which comprises a shell, an electromagnetic unit, a control unit and a plurality of contact units, wherein the electromagnetic unit, the control unit and the contact units are arranged on the shell; and an isolation block is arranged between every two adjacent terminals and arranged on the outer wall of the shell. The invention has simple structure, and the isolation block is additionally arranged between the adjacent terminals and is used for isolating the adjacent terminals, thereby avoiding the occurrence of air-through short circuit of high-voltage components connected with the terminals due to too close proximity, keeping the structure of the relay compact and ensuring the use safety of the relay.

Description

Insulation isolation type electromagnetic relay

Technical Field

The invention relates to the technical field of electric control, in particular to an insulating isolation type electromagnetic relay.

Background

In the current relay, the housing is usually made of an insulating material, and the terminal connected to the movable contact protrudes out of the housing for connection with the high-voltage component. However, in the case of relays of today, in order to prevent short-circuiting of the connected high-voltage components to each other by breaking through air, the distance between the terminals is usually extended. However, this approach will certainly result in a relay that is bulky and cumbersome and not practical.

Disclosure of Invention

The invention provides an insulation isolation type electromagnetic relay aiming at the problems in the prior art, which can isolate adjacent terminals, ensure compact structure and avoid short circuit between the adjacent terminals.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention provides an insulation isolation type electromagnetic relay which comprises a shell, an electromagnetic unit, a control unit and a plurality of contact units, wherein the electromagnetic unit, the control unit and the plurality of contact units are arranged on the shell, each contact unit comprises a switch-on component and two fixed contacts, the fixed contacts are connected with terminals, the terminals protrude out of the shell, the electromagnetic unit is used for driving the control unit to act, and the control unit is used for driving the switch-on component to act so that the switch-on component is abutted to or separated from the two fixed contacts; and an isolation block is arranged between every two adjacent terminals and arranged on the outer wall of the shell.

Furthermore, a plurality of mounting grooves are formed in the inner side wall of the shell, the number of the mounting grooves is the same as that of the static contacts, the static contacts and the mounting grooves are assembled in a one-to-one correspondence mode, the tops of the mounting grooves are communicated with jacks, and the terminals protrude out of the shell through the jacks; an isolation groove is arranged between the adjacent mounting grooves.

Furthermore, the terminal comprises a connecting part, a positioning part and an external connecting part, the static contact is arranged on the connecting part, and the connecting part is arranged in the mounting groove; a positioning groove is arranged between the mounting groove and the jack, one end of the positioning part is crossed with the connecting part, the other end of the positioning part is crossed with the external connection part, the positioning part is arranged in the positioning groove and is abutted against the inside of the positioning groove, and the external connection part protrudes out of the shell through the jack;

the both sides of constant head tank are provided with the stopper respectively, and location portion lies in between two stoppers and contradicts with two stoppers.

Furthermore, the electromagnetic unit comprises an insulating support, a coil, a yoke, a magnetic core and two pins, wherein the insulating support and the yoke are both arranged on the shell, the magnetic core is arranged in the insulating support, one end of the magnetic core is connected with the yoke, the coil is wound on the insulating support, the control unit is arranged on the yoke, the control unit is used for being connected with the other end of the magnetic core when the coil is electrified, and the two pins are respectively connected with two ends of the coil; the shell is provided with two power connection holes, the pins and the power connection holes are assembled in a one-to-one correspondence mode, and the pins protrude out of the shell through the power connection holes.

Furthermore, the control unit comprises an insulating base, an armature and an elastic piece, the armature is movably arranged on the yoke, the insulating base is connected with the armature, the elastic piece is arranged between the armature and the insulating base, and the connection component is arranged on the insulating base;

the inside wall of casing is provided with the backup pad, the backup pad is located the yoke with between the switch-on subassembly, the yoke with the backup pad is contradicted, the elastic component is located the yoke with between the backup pad.

Preferably, one end of the insulating base, which is close to the yoke, is provided with a limiting protrusion, and the limiting protrusion is used for abutting against a supporting plate for limiting; the insulating base is provided with a slot, the armature is inserted into the side wall of one end of the slot and is provided with an elastic foot, and the elastic foot is abutted to the inner side wall of the slot.

Preferably, the elastic element comprises a base plate, a positioning block, a first clamping hook and a second clamping hook, the yoke is provided with a positioning hole, one end of the positioning block is connected to the base plate, and the other end of the positioning block is inserted into the positioning hole to realize positioning; the first clamping hook and the second clamping hook are connected to the base plate, the first clamping hook is hooked in the insulating base, and the second clamping hook is hooked in the armature.

Preferably, the yoke is close to the one end of armature is provided with the spacing groove, armature warp the spacing groove install in the insulator foot, armature is provided with the cell body, the both ends inner wall of cell body is provided with first conflict cambered surface and second conflict cambered surface respectively, and first conflict cambered surface and second conflict cambered surface are used for conflicting respectively two terminal surfaces of yoke.

Furthermore, one end of each pin protrudes out of the shell, the other end of each pin is provided with a wiring part, one side of each wiring part is provided with a first extending part, one side of each first extending part, which is far away from the wiring part, is bent to form a second extending part, a gap is reserved between each first bending part and each pin, and each first bending part and each second extending part are used for preventing the pins from being separated from the power connection holes; the terminal surface of pin is provided with the conflict arch, and the conflict arch is used for contradicting in order to fix a position the pin with connecing the inner wall in electric hole.

Furthermore, the both sides of casing inwards cave in respectively and form the groove of stepping down, and the bottom in the groove of stepping down is provided with the mounting hole, and the mounting hole is used for carrying out positioning assembly with the external component cooperation.

The invention has the beneficial effects that: the invention has simple structure, and the isolation block is additionally arranged between the adjacent terminals and is used for isolating the adjacent terminals, thereby avoiding the occurrence of air-through short circuit of high-voltage components connected with the terminals due to too close proximity, keeping the structure of the relay compact and ensuring the use safety of the relay.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is an exploded view of the present invention.

Fig. 4 is an exploded view of the control unit of the present invention.

Fig. 5 is a schematic view of a stationary contact and a terminal of the present invention.

Fig. 6 is a schematic diagram of a lead according to the present invention.

Fig. 7 is a rear view of the front housing of the present invention.

Fig. 8 is a schematic view of the knock-up hole, the slide hole and the knock-up groove of the present invention.

Reference numerals: 1-housing, 2-electromagnetic unit, 3-control unit, 4-contact unit, 5-front housing, 6-rear housing, 7-jacking mechanism, 11-spacer, 12-mounting groove, 13-spacer groove, 14-positioning groove, 15-jacking hole, 16-sliding hole, 17-support plate, 18-abdicating groove, 19-mounting hole, 21-insulating support, 22-coil, 23-yoke, 24-magnetic core, 25-pin, 31-insulating base, 32-armature, 33-elastic member, 41-connecting component, 42-static contact, 43-terminal, 51-connecting hole, 52-jack, 71-jacking column, 72-control handle, 73-positioning member, 141-stopper, 151-jacking groove, 231-stopper groove, 251-wiring portion, 252-first extension portion, 253-second extension portion, 254-interference protrusion, 311-stopper protrusion, 312, slot 321-elastic pin, 322-first arc surface, 323-second conflict cambered surface, 331-base plate, 332-locating piece, 333-first trip, 334-second trip, 431-connecting portion, 432-locating portion, 433-external 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 is described in detail below with reference to the attached drawings.

As shown in fig. 1 to 8, the insulating isolation type electromagnetic relay provided by the present invention includes a housing 1, an electromagnetic unit 2, a control unit 3 and a plurality of contact units 4, which are disposed on the housing 1, where the contact units 4 include a switch-on component 41 and two fixed contacts 42, the fixed contacts 42 are connected to terminals 43, the terminals 43 protrude out of the housing 1, the electromagnetic unit 2 is configured to drive the control unit 3 to move, and the control unit 3 is configured to drive the switch-on component 41 to move so that the switch-on component 41 collides with or separates from the two fixed contacts 42; a separation block 11 is arranged between every two adjacent terminals 43, and the separation block 11 is arranged on the outer wall of the shell 1.

When the invention is connected with a high-voltage component, the high-voltage component (generally, a wire) is connected with the terminal 43 through welding or other wiring methods, the wire is generally only a part of the exposed metal connected with the terminal 43, so that if breakdown air occurs, the wire is only connected with the terminal 43, and at the moment, the isolating block 11 is arranged, so that the two wires are blocked, the short circuit between the two terminals 43 is ensured, the safety is improved, the invention is suitable for a relay with more than one control, such as the embodiment, and the volume of the relay is kept not too large.

In this embodiment, the inner side wall of the housing 1 is provided with a plurality of mounting grooves 12, the number of the mounting grooves 12 is the same as that of the static contacts 42, the static contacts 42 are assembled with the mounting grooves 12 in a one-to-one correspondence manner, the top of the mounting grooves 12 is communicated with a jack 52, and the terminal 43 protrudes out of the housing 1 through the jack 52; an isolation groove 13 is provided between adjacent mounting grooves 12. Namely, in addition to isolating the terminal 43 outside the housing 1, the isolation of the static contact 42 inside the housing 1 is realized by the isolation groove 13, so that the safety of the invention is ensured.

Specifically, the terminal 43 includes a connection portion 431, a positioning portion 432 and an external connection portion 433, the static contact 42 is installed on the connection portion 431, and the connection portion 431 is installed in the installation groove 12; a positioning groove 14 is arranged between the mounting groove 12 and the jack 52, one end of the positioning part 432 is crossed with the connecting part 431, the other end of the positioning part 432 is crossed with the external connecting part 433, the positioning part 432 is arranged in the positioning groove 14 and is abutted against the inside of the positioning groove 14, and the external connecting part 433 protrudes out of the shell 1 through the jack 52; the two sides of the positioning groove 14 are respectively provided with a stopper 141, and the positioning portion 432 is located between the two stoppers 141 and abuts against the two stoppers 141. This terminal 43 is similar "Z" type to can contradict in order to fix a position with the inside wall of constant head tank 14, guarantee the stability and the intensity of terminal 43, and carry out "cliping" to location portion 432 through stopper 141, avoid when current strength is big, terminal 43 atress and take place the skew, thereby guaranteed the stability of connecing the electricity.

Specifically, a plurality of jacking mechanisms 7 are arranged in the housing 1, the jacking mechanisms 7 are located between two static contacts 42 of the same contact unit 4 (specifically, located in the isolation groove 13), each jacking mechanism 7 comprises a jacking column 71 and a control handle 72, the jacking column 71 is made of an insulating material, a jacking hole 15 is arranged in the housing 1, two sides of each jacking hole 15 are respectively communicated with a jacking groove 151, a sliding hole 16 is arranged between each jacking groove 151 and each jacking hole 15, a positioning member 73 is arranged on the side wall of each jacking column 71, the jacking columns 71 are movably arranged in the jacking holes 15, the control handles 72 are located outside the housing 1 and connected with the jacking columns 71, the control handles 72 are used for driving the jacking columns 71 to rotate and slide along the jacking holes 15, and the positioning members 73 are located in the jacking grooves 151;

the jacking mechanism 7 is suitable for use in a relay with multiple controls as in the present embodiment, that is, when one group of the static contacts 42 needs to be switched off urgently and the other group of the static contacts 42 needs to be switched on, that is, the jacking post 71 needs to be operated, the following steps are specifically performed: the control handle 72 controls the jacking column 71 to rotate, so that the positioning member 73 is exposed in the sliding hole 16, then the jacking column 71 is controlled to slide along the jacking hole 15, so that the jacking column 71 protrudes into the housing 1 through the jacking hole 15 and jacks the switch-on component 41 away from the fixed contact 42, and then the jacking column 71 is rotated so that the positioning member 73 and the sliding hole 16 are dislocated, so that the locking effect on the jacking column 71 is realized. The jacking column 71 is made of an insulating material, so that after the switch-on component 41 is jacked up, on the premise that the other switch-on component 41 is still in a switch-on state, the two fixed contacts 42 are disconnected, the disconnected high-voltage components are maintained on the premise of not powering off, and the loss caused by overlong power-off time is reduced.

Specifically, the housing includes a front case 5 and a rear case 6 that are fastened to each other, and the jacking mechanism 7, the spacer 11, the mounting groove 12, the spacer groove 13, the positioning groove 14, the support plate 17, and the like are provided in the front case 5.

In this embodiment, the electromagnetic unit 2 includes an insulating support 21, a coil 22, a yoke 23, a magnetic core 24, and two pins 25, where the insulating support 21 and the yoke 23 are both disposed on the housing 1, the magnetic core 24 is mounted in the insulating support 21, one end of the magnetic core 24 is connected to the yoke 23, the coil 22 is wound on the insulating support 21, the control unit 3 is mounted on the yoke 23, the control unit 3 is configured to be connected to the other end of the magnetic core 24 when the coil 22 is powered on, and the two pins 25 are respectively connected to two ends of the coil 22; the shell 1 is provided with two power connection holes 51, the pins 25 are assembled with the power connection holes 51 in a one-to-one correspondence mode, and the pins 25 protrude out of the shell 1 through the power connection holes 51.

When the magnetic control device works, the coil 22 is electrified to generate a magnetic field, and the control unit 3 is magnetized due to the magnetization of the magnetic field, so that the control unit is attracted by the iron core due to the magnetism; in the process that the control unit 3 moves to contact the magnetic core 24, the switch-on component 41 disposed on the control unit 3 is driven to contact the fixed contact 42, so as to achieve the effect of conducting the two fixed contacts 42. The invention only has one electromagnetic unit 2, so the electromagnetic unit 2 can be far away from the power pin 25, thereby avoiding short circuit without arranging the isolation block 11.

Specifically, the control unit 3 includes an insulating base 31, an armature 32 and an elastic member 33, the armature 32 is movably disposed on the yoke 23, the insulating base 31 is connected to the armature 32, the elastic member 33 is disposed between the armature 32 and the insulating base 31, and the connection assembly 41 is mounted on the insulating base 31; the inside wall of casing 1 is provided with backup pad 17, backup pad 17 is located yoke 23 with switch-on component 41 between, yoke 23 with backup pad 17 contradicts, elastic component 33 is located yoke 23 with backup pad 17 between.

That is, the armature 32 is used to contact with the iron core, and during the movement of the armature 32, the insulating base 31 is driven to rotate, so that the switch-on component 41 installed on the insulating base 31 rotates to make the stationary contact 42 contact, and at this time, the elastic component 33 is forced to deform; when the coil 22 loses power, the armature 32 loses magnetism, so the elastic element 33 loses the force forcing deformation, and the elastic element 33 recovers deformation to drive the armature 32 and the insulating base 31 to reset, so that the switch-on component 41 is separated from the static contact 42 to realize power failure of a high-voltage part, and the effect of controlling high voltage by low voltage is achieved.

Preferably, one end of the insulating base 31 close to the yoke 23 is provided with a limiting protrusion 311, and the limiting protrusion 311 is used for limiting by abutting against the supporting plate 17; the insulating base 31 is provided with a slot 312, and an elastic pin 321 is arranged on the side wall of one end of the armature 32 inserted into the slot 312, and the elastic pin 321 is abutted against the inner side wall of the slot 312. This spacing protruding 311's setting for carry out spacing use, when elastic component 33 drove insulating base 31 and resets promptly, spacing protruding 311 can contradict with backup pad 17 and spacing, avoids armature 32 to leave magnetic core 24 and apart from the overlength and lead to unreliable actuation.

Preferably, the elastic element 33 includes a base plate 331, a positioning block 332, a first hook 333 and a second hook 334, the yoke 23 is provided with a positioning hole, one end of the positioning block 332 is connected to the base plate 331, and the other end of the positioning block 332 is inserted into the positioning hole to realize positioning; the first hook 333 and the second hook 334 are both connected to the substrate 331, the first hook 333 is hooked in the insulating base 31, and the second hook 334 is hooked in the armature 32. Namely, the elastic element 33 is inserted into the yoke 23 to realize the limit, thereby ensuring the reliability of the position of the elastic element 33; and the first hook 333 and the second hook 334 are respectively used for catching the insulating base 31 and the armature 32, so that the reliability and stability of the connection between the insulating base 31 and the armature 32 are increased, and the linkage effect is ensured.

Preferably, yoke 23 is close to armature 32's one end is provided with spacing groove 231, armature 32 warp spacing groove 231 install in insulating base 31, armature 32 is provided with the cell body, the both ends inner wall of cell body is provided with first conflict cambered surface 322 and second conflict cambered surface 323 respectively, and first conflict cambered surface 322 and second conflict cambered surface 323 are used for conflicting respectively two terminal surfaces of yoke 23, first conflict cambered surface 322 and second conflict cambered surface 323 are used for conflicting respectively two terminal surfaces of yoke 23. That is, when the insulating base 31 and the armature 32 rotate, the first abutting arc 322 and the second abutting arc 323 are realized by being attached to two end faces of the yoke 23, the friction force in the rotating process is reduced and the abutting reliability is increased due to the arrangement of the arc faces, the rotation is avoided, so that the insulating base 31 and the armature 32 are relatively displaced, and the installation reliability is ensured.

Specifically, one end of the pin 25 protrudes out of the housing 1, the other end of the pin 25 is provided with a wire connection portion 251, one side of the wire connection portion 251 is provided with a first extension portion 252, one side of the first extension portion 252, which is away from the wire connection portion 251, is bent to form a second extension portion 253, a gap is left between the first bending portion and the pin 25, and the first bending portion and the second extension portion 253 are used for preventing the pin 25 from being separated from the power connection hole 51; the end surface of the pin 25 is provided with an abutting protrusion 254, and the abutting protrusion 254 is used for abutting against the inner wall of the power connection hole 51 to position the pin 25. The first extension part 252 and the second extension part 253 are matched, so that the pin 25 cannot slide out of the shell 1 after extending out of the shell 1 through the electric hole 51, the stability is ensured, and the first extension part 252 and the second extension part 253 are matched, so that the connecting area of the pin 25 and the coil 22 is increased, and the butt joint is facilitated; in addition, the protrusion 254 is provided to contact the inner wall of the contact hole 51 to increase the friction force, so that the pin 25 can be more stably mounted.

In this embodiment, the both sides of casing 1 inwards cave in respectively and form the groove of stepping down 18, and the bottom of the groove of stepping down 18 is provided with mounting hole 19, and mounting hole 19 is used for carrying out positioning assembly with the external component cooperation for fixed screw of usefulness can be along stepping down 18 and slide in the mounting hole 19 and lock admittedly, thereby lets the assembly simpler.

Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. An insulation isolation type electromagnetic relay is characterized in that: the contact unit comprises a switch-on component and two fixed contacts, the fixed contacts are connected with terminals, the terminals protrude out of the shell, the electromagnetic unit is used for driving the control unit to act, and the control unit is used for driving the switch-on component to act so that the switch-on component is abutted to or separated from the two fixed contacts; and an isolation block is arranged between every two adjacent terminals and arranged on the outer wall of the shell.

2. The insulated electromagnetic relay of claim 1, wherein: the inner side wall of the shell is provided with a plurality of mounting grooves, the number of the mounting grooves is the same as that of the static contacts, the static contacts and the mounting grooves are assembled in a one-to-one correspondence mode, the tops of the mounting grooves are communicated with jacks, and the terminals protrude out of the shell through the jacks; an isolation groove is arranged between the adjacent mounting grooves.

3. The insulated electromagnetic relay of claim 2, wherein: the terminal comprises a connecting part, a positioning part and an external connecting part, the static contact is arranged on the connecting part, and the connecting part is arranged in the mounting groove; a positioning groove is arranged between the mounting groove and the jack, one end of the positioning part is crossed with the connecting part, the other end of the positioning part is crossed with the external connection part, the positioning part is arranged in the positioning groove and is abutted against the inside of the positioning groove, and the external connection part protrudes out of the shell through the jack;

the both sides of constant head tank are provided with the stopper respectively, and location portion lies in between two stoppers and contradicts with two stoppers.

4. The insulated electromagnetic relay of claim 1, wherein: the electromagnetic unit comprises an insulating support, a coil, a yoke, a magnetic core and two pins, wherein the insulating support and the yoke are arranged on the shell, the magnetic core is arranged in the insulating support, one end of the magnetic core is connected with the yoke, the coil is wound on the insulating support, the control unit is arranged on the yoke and is used for being connected with the other end of the magnetic core when the coil is electrified, and the two pins are respectively connected with two ends of the coil; the shell is provided with two power connection holes, the pins and the power connection holes are assembled in a one-to-one correspondence mode, and the pins protrude out of the shell through the power connection holes.

5. The insulated electromagnetic relay of claim 4, wherein: the control unit comprises an insulating base, an armature and an elastic piece, the armature is movably arranged on the yoke, the insulating base is connected with the armature, the elastic piece is arranged between the armature and the insulating base, and the connection component is arranged on the insulating base;

the inside wall of casing is provided with the backup pad, the backup pad is located the yoke with between the switch-on subassembly, the yoke with the backup pad is contradicted, the elastic component is located the yoke with between the backup pad.

6. The insulated electromagnetic relay of claim 5, wherein: one end of the insulating base, which is close to the yoke, is provided with a limiting protrusion, and the limiting protrusion is used for abutting against a supporting plate for limiting; the insulating base is provided with a slot, the armature is inserted into the side wall of one end of the slot and is provided with an elastic foot, and the elastic foot is abutted to the inner side wall of the slot.

7. The insulated electromagnetic relay of claim 5, wherein: the elastic piece comprises a base plate, a positioning block, a first clamping hook and a second clamping hook, the yoke is provided with a positioning hole, one end of the positioning block is connected to the base plate, and the other end of the positioning block is inserted into the positioning hole to realize positioning; the first clamping hook and the second clamping hook are connected to the base plate, the first clamping hook is hooked in the insulating base, and the second clamping hook is hooked in the armature.

8. The insulated electromagnetic relay of claim 5, wherein: the yoke is close to the one end of armature is provided with the spacing groove, armature warp the spacing groove install in the insulator foot, armature is provided with the cell body, the both ends inner wall of cell body is provided with first conflict cambered surface and second conflict cambered surface respectively, and first conflict cambered surface and second conflict cambered surface are used for conflicting respectively two terminal surfaces of yoke.

9. The insulated electromagnetic relay of claim 4, wherein: one end of each pin protrudes out of the shell, the other end of each pin is provided with a wiring part, one side of each wiring part is provided with a first extending part, one side of each first extending part, which is far away from the wiring part, is bent to form a second extending part, a gap is reserved between each first bending part and each pin, and the first bending parts and the second extending parts are used for preventing the pins from being separated from the power connection holes; the terminal surface of pin is provided with the conflict arch, and the conflict arch is used for contradicting in order to fix a position the pin with connecing the inner wall in electric hole.

10. The insulated electromagnetic relay of claim 1, wherein: the both sides of casing inwards cave in respectively and form the groove of stepping down, and the bottom in groove of stepping down is provided with the mounting hole, and the mounting hole is used for fixing a position the assembly with the external component cooperation.

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