CN218826925U - Contact terminal - Google Patents

Abstract

The utility model relates to a low-voltage apparatus technical field, the utility model discloses a contact, the inside of moving the standing groove is equipped with the moving contact, the inside of quiet standing groove is equipped with the static contact, the inner wall of moving the standing groove is equipped with the electromagnetic ring, the inner wall of quiet standing groove is equipped with electromagnetic ring two, the one end of electric connection current conducting plate is passed through with the one end of electromagnetic ring two to electromagnetic ring one, the other end sliding connection moving groove of current conducting plate, the bottom of moving plate is equipped with the power supply board that links to each other with the live wire, through the mutual sliding connection of moving contact and static contact, can get rid of the oxide layer on moving contact and the static contact, and then increase its life, when meetting circuit fault, electromagnetism release and heating metal piece, with moving contact and static contact separation, and power supply board is connected to the current conducting plate, electromagnetic ring and electromagnetic ring two circular telegrams, and then produce the electromagnetic force, make all around of moving contact and static contact have the protection of electromagnetic force, can electric arc under the magnetic field effect, thereby the protection is pushed open the moving contact and is alleviateed the electric arc injury with the static contact.

Description

Contact terminal

Technical Field

The utility model relates to a low-voltage apparatus technical field, in particular to contact.

Background

The low-voltage frame type circuit breaker is a component of low-voltage electrical equipment with large capacity, can ensure that a circuit is switched on or off under a rated load, can automatically break the circuit under abnormal circuit states (such as overload, short circuit, undervoltage and the like), and can completely isolate the load from a power supply by separating a movable contact from a fixed contact.

The contact mechanism is an important component of a circuit breaker, which functions to switch on and off the current. When fault current occurs in a circuit, the operating mechanism drives the moving contact to swing, so that the moving contact and the static contact are quickly disconnected, the current is disconnected, voltage exists between the moving contact and the static contact in the disconnection process, air medium is discharged to generate electric arc, the electric arc delays the disconnection time of the switch, the disconnection performance of the switch is reduced, and the high temperature of the electric arc can burn parts near the contact, so that the electric arc is quickly moved to an arc extinguish chamber to shorten the arc burning time

Therefore, an arc striking structure is often arranged in the contact mechanism, so that electric arcs generated when the moving contact and the fixed contact are separated can be quickly and smoothly led into the grid arc extinguishing chamber to be extinguished. However, the existing arc striking device is large in size, occupies a large space, has a poor arc striking effect, and causes the retention time of an electric arc between a moving contact and a static contact to be too long, so that the contact is easily burnt, the existing contact cannot be self-cleaned, and after the existing arc striking device is used for a long time, the contact position of the contact is easily subjected to high-temperature action and then oxidized, so that the contact is easily poor in contact, and the service life of the contact is influenced.

Therefore, it is necessary to provide a contact to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a contact.

The utility model provides a pair of contact includes: the movable placing plate and the static placing plate are placed in the shell, a movable placing groove and a static placing groove are respectively arranged on the end faces, opposite to the static placing plate, of the movable placing plate, a movable contact is arranged inside the movable placing groove, a static contact is arranged inside the static placing groove, the movable contact and the static contact are respectively connected with a live wire and a part in a circuit, the inner wall of the movable placing groove is provided with an electromagnetic coil, the inner wall of the static placing groove is provided with a second electromagnetic coil, one end of the first electromagnetic coil and one end of the second electromagnetic coil are electrically connected with one end of a current conducting plate of the movable placing plate end face, the other end of the current conducting plate is slidably connected with a moving groove, the moving groove is arranged on a fixed plate placed in the shell, the top of the moving groove is connected with a moving plate through a placing spring, the bottom of the moving plate is provided with a power supply plate connected with the live wire, the bottom of the movable placing plate is fixedly connected with a moving rod, the end face of the moving rod is vertically connected with an outer moving rod, a compression spring is sleeved on the outer wall of the moving rod, the moving plate is connected with a rotating clamp groove, the moving plate, the moving clamp is connected with a rotating plate, and a rotating clamp, the rotating clamp which is arranged on the rotating plate, and a rotating clamp which is arranged on the rotating plate, and a rotating clamp which is connected with a rotating plate, and a rotating plate which is connected with a rotating plate, and a rotating plate which is arranged on a rotating plate, and a rotating plate which is connected with a rotating device.

Preferably, the lever comprises a rod body, one end face of the rod body is vertically connected with the movable rod, the electromagnetic trip comprises an electromagnet, one end of the electromagnet is rotatably connected with the armature, the movable rod is located between the armature and the electromagnet, and a rod body spring is arranged at the joint of the armature and the electromagnet.

Preferably, the terminal surface of cardboard is equipped with the fixed slot, the bottom of moving the cardboard be equipped with fixed slot complex fixed block.

Preferably, the other end face of the rod body is perpendicularly connected with a right driving rod, one side of the right driving rod is provided with an under-voltage release, the under-voltage release comprises a right electromagnet, the right electromagnet is connected with a circuit, a right armature is adsorbed on the right electromagnet, one end of the right armature is connected with a right fixed plate through a right spring, one end of the right fixed plate is connected onto the shell, and the right driving rod is located between the right electromagnet and the right armature.

Preferably, the movable and static arc striking plates are respectively arranged on the end surfaces of the movable and static placing plates outside the movable and static placing grooves, and the movable and static arc striking plates are respectively arranged on the end surfaces of one ends of the movable and static arc striking plates.

Preferably, the terminal surface of current conducting plate both ends is equipped with a plurality of left sliders and right slider, and left slider and right slider be sliding connection left spout and right spout respectively, and left spout and right spout set up on the terminal surface of casing. .

Compared with the prior art, the utility model provides a pair of contact has following beneficial effect:

1. the utility model discloses a moving contact and the static contact that can reciprocate are set up, in the process of connecting, through the mutual sliding friction of moving contact and static contact, can get rid of the oxide layer on moving contact and the static contact, and then increase its life, when preventing follow-up use, contact failure, and when meetting circuit fault, electromagnetic trip and heating sheetmetal, separate moving contact and static contact, and then the current conducting plate is connected the power supply board, two circular telegrams electromagnetic ring and electromagnetic ring, and then produce the electromagnetic force, make all around of moving contact and static contact have the protection of electromagnetic force, can push electric arc open under the magnetic field effect, thereby protect moving contact and static contact and alleviate the electric arc injury, prolong its life-span;

2. the arc extinguishing chamber is provided with the movable arc striking plate and the static arc striking plate, so that the electric arc can be moved out of the arc extinguishing chamber through the movable arc striking plate and the static arc striking plate to extinguish the arc, the electric arc is prevented from staying between the movable contact and the static contact, and the electric arc injury is further reduced;

3. the utility model discloses a set up left spout and right spout, guarantee the current conducting plate when reciprocating, more stability, and then prevent that the current conducting plate from misplacing when reciprocating, can not be connected current conducting plate and power supply board, and then influence the use of electromagnetic ring and electromagnetic ring two.

Drawings

Fig. 1 is a schematic structural diagram of a contact according to a preferred embodiment of the present invention;

FIG. 2 is an internal view of the fixation plate shown in FIG. 1;

fig. 3 is a schematic structural view of the undervoltage trip shown in fig. 1;

FIG. 4 is a schematic structural view of the electromagnetic release of FIG. 1;

reference numbers in the figures: 1. a movable placing plate; 2. a static placing plate; 3. a travel bar; 4. a compression spring; 5. placing the plate; 6. a rotating plate; 7. an electromagnetic release; 8. an undervoltage release; 9. a conductive plate; 10. a fixing plate; 11. a movable arc striking plate; 12. a static arc striking plate; 13. a movable arc guide plate; 14. a static arc guide plate; 101. a static placing groove; 102. static contact; 103. a moving groove; 104. moving the plate; 105. placing a spring; 106. a power supply board; 107. a left slider; 108. a movable placing groove; 109. a moving contact; 110. a right slider; 111. clamping a plate; 201. a rod body; 202. a right driving rod; 203. an electromagnet; 204. a right electromagnet; 205. a right armature; 206. a right spring; 207. a right fixing plate; 208. heating the metal sheet; 209. driving the rod; 210. an armature; 211. a card slot; 212. and a movable clamping plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The novel implementation of a contact is described in detail below with reference to specific embodiments.

Referring to fig. 1 to 4, the present invention provides a contact including: a movable placing plate 1 and a static placing plate 2 which are placed in a shell, wherein the end surfaces of the movable placing plate 1 and the static placing plate 2 which are opposite are respectively provided with a movable placing groove 108 and a static placing groove 101, the interior of the movable placing groove 108 is provided with a movable contact 109, the interior of the static placing groove 101 is provided with a static contact 102, the movable contact 109 and the static contact 102 are respectively connected with a live wire and a part in a circuit, the inner wall of the movable placing groove 108 is provided with an electromagnetic ring, the inner wall of the static placing groove 101 is provided with an electromagnetic ring II, one end of the electromagnetic ring I and one end of the electromagnetic ring II are electrically connected with one end of a conductive plate 9 which is positioned on the end surface of the movable placing plate 1, the other end of the conductive plate 9 is slidably connected with a movable groove 103, the movable groove 103 is positioned on a fixed plate 10 which is placed in the shell, the top of the movable plate 103 is connected with a movable plate 104 through a movable plate placing spring 105, the bottom of the movable plate 104 is provided with a power supply plate 106 which is connected with the live wire, move the bottom fixed connection carriage release lever 3 of placing board 1, the outer carriage release lever is connected perpendicularly to the terminal surface of carriage release lever 3, compression spring 4 is connected to the cover on the outer wall of carriage release lever 3, compression spring 4's bottom fixed connection has the top of placing board 5 of through-hole, the bottom of carriage release lever 3 passes the through-hole and is located the below of placing board 5, the terminal surface of carriage release lever 3 is equipped with cardboard 111, one side of cardboard 111 is equipped with the movable clamp plate 212 of buckle connection with it, movable clamp plate 212 rotates and connects draw-in groove 211, draw-in groove 211 sets up on the terminal surface of rotor plate 6, the junction of movable clamp plate 212 and draw-in groove 211 is equipped with the answer spring, rotor plate 6 rotates the inner wall of connecting shell through the pivot, the one end of rotor plate 6 contacts with the lever, the outside of lever is equipped with electromagnetic trip 7 and the heating sheetmetal 208 that make its remove, electromagnetic trip 7 passes through electric connection on the circuit with heating sheetmetal 208.

It should be noted that: the part of the outer moving rod, which is positioned outside the shell, can be sleeved and connected with a moving shell made of insulating materials, the moving rod 3 can be moved up and down through the outer moving rod, when the moving clamping plate 212 is arranged inside the clamping groove 211, the moving clamping plate 212 is ensured to be in a horizontal state when not stressed and is in a rotating state, the moving clamping plate 212 can rotate upwards and cannot rotate downwards inside the clamping groove 211, the moving contact 109 on the moving placing plate 1 can be connected with the static contact 102 on the static placing plate 2 statically through moving the moving placing plate 1 up and down, so that a circuit is closed, in the connection process, the oxide layers on the moving contact 109 and the static contact 102 can be removed through the mutual sliding friction of the moving contact 109 and the static contact 102, so that the service life of the moving contact 109 and the static contact 102 is prolonged, the contact failure during subsequent use is prevented, and when the circuit is short-circuited, the lever is driven by the electromagnetic release 7 to move, so that the rotating plate 6 rotates, the movable clamping plate 212 is separated from the clamping plate 111, the movable contact 109 moves upwards to be separated from the fixed contact 102 under the restoring action of the compression spring 4, and because the conductive plate 9 is positioned below the power supply plate 106 when the movable contact 109 is connected with the fixed contact 102, the upper part of the conductive plate 9 can conduct electricity, and the lower part of the conductive plate 9 is made of an insulating material, when the movable contact 109 moves upwards, the conductive plate 9 is driven to move upwards, the conductive plate 9 is connected with the power supply plate 106 before the movable contact 109 is separated from the fixed contact 102, the electromagnetic ring and the electromagnetic ring are electrified to generate electromagnetic force, so that the peripheries of the movable contact 109 and the fixed contact 102 are protected by the electromagnetic force, electric arcs can be pushed away under the action of a magnetic field, the movable contact 109 and the fixed contact 102 are protected to reduce electric arc damage, the service life of the movable contact is prolonged, and when the circuit is under the condition of overlarge load, the deformation of the heating metal sheet 208 is used for heating, and then the lever is driven to move, the rotating plate 6 is rotated, the movable contact 109 moves upwards to be separated from the static contact 102, and the subsequent movement process is consistent with the movement during the circuit short circuit.

In the embodiment of the utility model, refer to fig. 1 and show, the lever includes the body of rod 201, the one end terminal surface vertical connection of the body of rod 201 moves pole 209, electromagnetic trip 7 includes electro-magnet 203, and the one end of electro-magnet 203 is rotated and is connected armature 210, drives pole 209 and is located between armature 210 and the electro-magnet 203, and armature 210 is equipped with body of rod spring with the junction of electro-magnet 203.

It should be noted that: by arranging the rod body 201 and the driving rod 209 arranged on the rod body 201, when short circuit occurs, the instantaneous current is increased, the armature 210 can drive the rod body 201 to move, the movable clamping plate 212 is separated from the clamping plate 111, the circuit is disconnected, and by arranging the rod body spring, when the circuit is disconnected, the armature 210 can be restored to the original position;

in the embodiment of the present invention, referring to fig. 1, the end surface of the clamping plate 111 is provided with a fixing groove, and the bottom of the movable clamping plate 212 is provided with a fixing block matched with the fixing groove.

It should be noted that: by arranging the fixing groove and the fixing block matched with the fixing groove, the connection between the clamping plate 111 and the movable clamping plate 212 is more stable, and the separation of the movable clamping plate 212 and the clamping plate 111 is prevented in the using process;

in the embodiment of the utility model, refer to fig. 1 and show, right side drive pole 202 is connected perpendicularly to the other end terminal surface of the body of rod 201, and one side of right side drive pole 202 is equipped with undervoltage release 8, and undervoltage release 8 includes right electro-magnet 204, and right electro-magnet 204 links to each other with the circuit, and the absorption of right electro-magnet 204 has right armature 205, and right armature 205's one end is passed through right spring 206 and is connected right fixed plate 207, and the one end of right fixed plate 207 is connected on the casing, and right side drive pole 202 is located between right electro-magnet 204 and the right armature 205.

It should be noted that: by arranging the under-voltage release 8, the circuit can be disconnected when the voltage in the circuit is insufficient, and the damage to devices in the circuit due to the under-voltage is prevented;

the utility model discloses an in the embodiment, refer to fig. 1 and show, moving of the outside of moving standing groove 108 and quiet standing groove 101 places board 1 and quiet and is equipped with respectively on the terminal surface of placing board 2 and move run-on plate 11 and quiet run-on plate 12, and the terminal surface of moving run-on plate 11 and quiet run-on plate 12 one end is equipped with moving that the slope set up respectively leads arc board 13 and quiet run-on plate 14.

It should be noted that: by arranging the movable arc striking plate 11 and the static arc striking plate 12, the electric arc can be moved out of the arc extinguishing chamber through the movable arc striking plate 11 and the static arc striking plate 12 to be extinguished, so that the electric arc is prevented from staying between the movable contact 109 and the static contact 102, and the electric arc damage is further reduced;

in the embodiment of the present invention, referring to fig. 1, the end surfaces of the two ends of the conductive plate 9 are provided with a plurality of left sliders 107 and right sliders 110, the left slider 107 and the right slider 110 are respectively slidably connected to a left chute and a right chute, and the left chute and the right chute are disposed on the end surface of the housing.

It should be noted that: through setting up left spout and right spout, guarantee the current conducting plate 9 when reciprocating, more stable, and then prevent that current conducting plate 9 from misplacing when reciprocating, can not be connected current conducting plate 9 and power supply board 106, and then influence the use of electromagnetic ring and electromagnetic ring two.

The utility model provides a pair of operating principle of contact as follows:

when the electromagnetic switch is used, the moving rod 3 is moved downwards through the outer moving rod to further drive the clamping plate 212 to move downwards, when the clamping plate 111 moves to the position of the moving clamping plate 212, the clamping plate 111 rotates the moving clamping plate 212 downwards, the clamping plate 111 passes through the upper part of the moving clamping plate 212 to move to the lower part of the moving clamping plate 212, under the action of the return spring, the moving clamping plate 212 returns to the original position, at the moment, the outer moving rod is loosened, under the action of the compression spring 4, the top part of the clamping plate 111 is connected with the bottom part of the moving clamping plate 212, the moving clamping plate 212 clamps the clamping plate 111, at the moment, the moving contact 109 is completely connected with the static contact 102, the conductive plate 9 is positioned below the power supply plate 106, the electromagnetic coil and the electromagnetic coil are disconnected, the normal work of a circuit is prevented from being influenced, when the circuit is short-circuited, the instantaneous current is increased, the armature 210 is attracted by the electromagnet 203, in the process of rotation of the armature 210, the driving rod 209 is moved to further drive the rod body 201 to move, the rotating plate 6 is rotated to further rotate the moving clamping plate 212, the moving clamping plate 212 is separated from the clamping plate 111, the moving rod 3 returns to the original position under the action of the compression spring 4, the moving contact 109 is separated from the static contact 102, when a circuit runs towards a load, the heating metal sheet 208 is heated and deformed, and then one end of the rod body 201 is moved to rotate the rotating plate 6, so that the moving contact 109 is separated from the static contact 102, when a circuit runs at an undervoltage, the magnetic force provided by the right electromagnet 203 is smaller than the restoring force of the spring of the right rod body spring, so that the right armature 205 is pulled away to drive the right driving rod 202, and then the rod body 201 is moved to rotate the rotating plate 6, so that the moving contact 109 is separated from the static contact 102;

when the movable contact 109 moves upward and is separated from the fixed contact 102, the conductive plate 9 is driven to move upward, the conductive plate 9 is connected with the power supply plate 106 before the movable contact 109 is separated from the fixed contact 102, the electromagnetic coil and the electromagnetic coil are electrified, electromagnetic force is further generated, the peripheries of the movable contact 109 and the fixed contact 102 are protected by the electromagnetic force, electric arcs can be pushed away under the action of a magnetic field, the movable contact 109 and the fixed contact 102 are protected, the damage of the electric arcs is relieved, and the service life of the electric arc is prolonged.

The utility model discloses in circuit and control that relate to be prior art, do not carry out too much repeated description here.

The above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.

Claims (6)

1. A contact, comprising: a movable placing plate (1) and a static placing plate (2) which are placed in a shell, a movable placing groove (108) and a static placing groove (101) are respectively arranged on the end faces of the movable placing plate (1) and the static placing plate (2) which are opposite, a movable contact (109) is arranged inside the movable placing groove (108), a static contact (102) is arranged inside the static placing groove (101), the movable contact (109) and the static contact (102) are respectively connected with a live wire and a part in a circuit, the inner wall of the movable placing groove (108) is provided with an electromagnetic ring, the inner wall of the static placing groove (101) is provided with an electromagnetic ring II, one end of the electromagnetic ring I and one end of the electromagnetic ring II are electrically connected with one end of a conductive plate (9) which is positioned on the end face of the movable placing plate (1), the other end of the conductive plate (9) is slidably connected with the movable plate (103), the movable groove (103) is positioned on a fixed plate (10) which is placed in the shell, the top of the movable groove (103) is connected with a movable plate (104) through a placing spring (105), the bottom of the movable plate (104) is provided with a power supply plate (106) which is connected with the live wire, the movable rod (1), the movable plate (3) which is connected with a compression spring (3), the compression rod (3) which is connected with a compression spring sleeve (4) which is connected with the compression spring sleeve, and a compression rod (4) which is connected with the compression spring, the bottom of carriage release lever (3) is passed the through-hole and is located the below of placing board (5), the terminal surface of carriage release lever (3) is equipped with cardboard (111), one side of cardboard (111) is equipped with movable cardboard (212) of being connected with its buckle, movable cardboard (212) rotate and connect draw-in groove (211), draw-in groove (211) set up on the terminal surface of rotor plate (6), the junction of movable cardboard (212) and draw-in groove (211) is equipped with the answer spring, rotor plate (6) rotate the inner wall of connecting the casing through the pivot, the one end of rotor plate (6) contacts with the lever, the outside of lever is equipped with electromagnetic trip (7) and heating sheetmetal (208) that make its removal, electromagnetic trip (7) and heating sheetmetal (208) are through electric connection on the circuit.

2. A contact according to claim 1, wherein the lever comprises a rod body (201), an end face of the rod body (201) is vertically connected with a lever rod (209), the electromagnetic trip (7) comprises an electromagnet (203), one end of the electromagnet (203) is rotatably connected with an armature (210), the lever rod (209) is located between the armature (210) and the electromagnet (203), and a rod body spring is arranged at the connection position of the armature (210) and the electromagnet (203).

3. The contact according to claim 1, wherein the end surface of the clamping plate (111) is provided with a fixing groove, and the bottom of the movable clamping plate (212) is provided with a fixing block which is matched with the fixing groove.

4. The contact according to claim 2, wherein the end face of the other end of the rod body (201) is vertically connected with a right driving rod (202), one side of the right driving rod (202) is provided with an undervoltage release (8), the undervoltage release (8) comprises a right electromagnet (204), the right electromagnet (204) is connected with a circuit, the right electromagnet (204) is adsorbed with a right armature (205), one end of the right armature (205) is connected with a right fixing plate (207) through a right spring (206), one end of the right fixing plate (207) is connected to the housing, and the right driving rod (202) is located between the right electromagnet (204) and the right armature (205).

5. The contact according to claim 1, wherein the movable placing groove (108) and the static placing groove (101) are provided with a movable arc striking plate (11) and a static arc striking plate (12) respectively on the outer side end surfaces of the movable placing plate (1) and the static placing plate (2), and the movable arc striking plate (11) and the static arc striking plate (12) are provided with a movable arc guiding plate (13) and a static arc guiding plate (14) which are obliquely arranged respectively on the end surfaces of one ends of the movable arc striking plate (11) and the static arc striking plate (12).

6. The contact according to claim 1, wherein the end surfaces of the two ends of the conductive plate (9) are provided with a plurality of left sliders (107) and right sliders (110), the left sliders (107) and the right sliders (110) are respectively connected with the left sliding groove and the right sliding groove in a sliding manner, and the left sliding groove and the right sliding groove are arranged on the end surface of the housing.

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