Front single-contact contact module of thrust type arc chute

Abstract

The utility model provides a thrust type arc chute preposed single contact contact module, comprising a housing, the housing comprises an arc extinguish chamber which is arranged at the front end of the housing and is provided with an arc chute, an action chamber which is arranged at the rear end of the housing, a tripping chamber which is arranged above the action chamber, and hardware which is arranged above the arc extinguish chamber and is arranged in the housing and is provided with a static contact; a hinged movable contact rod is arranged in the action chamber, and the movable contact rod swings under the pushing of a push spring to enable a movable contact and a static contact which are positioned at the front end of the movable contact rod to be normally closed; a tripping assembly and a swing rod are arranged in the tripping chamber. The front end of the swing rod faces the front end of the shell, and the rear end of the swing rod is hinged to the shell. The linkage rod is positioned in the action chamber and can slide up and down; and the push rod of the tripping assembly pushes the swing rod to enable the linkage rod to move downwards to push the movable feeler lever to swing downwards, so that the movable contact is separated from the static contact. The utility model has the advantages that the number of contacts can be effectively reduced, the contact reliability is ensured, the production cost is reduced, and the push spring is far away from the influence of electric arc.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electrical fittings, and particularly relates to a push type arc extinguishing grid front single contact module. BACKGROUND

[0002] The existing control and protection switch and other devices are often provided with multiple contact modules, each contact module controls the on-off of each phase, and the dynamic contact piece is generally driven in a translation mode during control, so that the two dynamic contact points at both ends of the dynamic contact piece are in contact with the static contact points of the incoming line and the outgoing line respectively, thereby achieving the on-off purpose. This structure has two groups of contact points for each phase (each contact module), which increases the material cost and process difficulty, and the two groups of contact points also increase the failure risk. SUMMARY

[0003] Based on the above problems, the utility model aims to provide a push type arc extinguishing grid front single contact module which can effectively reduce the number of contact points, ensure the contact reliability, reduce the production cost, and keep the push spring away from the influence of electric arc.

[0004] In view of the above problems, the following technical scheme is provided: a push type arc extinguishing grid front single contact module, comprising a shell, the shell comprises an arc extinguishing chamber located at the front end of the shell and provided with an arc extinguishing grid, an action chamber located at the rear end of the shell, and a tripping chamber located above the action chamber, and further comprising hardware located inside the shell above the arc extinguishing chamber, one end of the hardware extends outward from the front end of the shell, and the other end extends to one side of the arc extinguishing grid facing the action chamber and forms a downward static contact point; the action chamber is provided with a dynamic contact rod hinged through a swing shaft, the dynamic contact rod swings under the pushing of a push spring to make the dynamic contact point at the front end of the dynamic contact rod swing upward and keep constant closed contact with the static contact point; the tripping chamber is provided with a tripping assembly and a swing rod located below the tripping assembly, the swing rod has a front end facing the front end of the shell and a rear end hinged to the shell; further comprising a linkage rod which can slide up and down in the action chamber, the push rod of the tripping assembly pushes the swing rod to make the swing end of the swing rod push the linkage rod downward, thereby synchronously pushing the dynamic contact rod to swing downward to separate the dynamic contact point from the static contact point; the tripping assembly has a tripping coil, one end of the tripping coil is electrically connected to the dynamic contact rod through a flexible wire, and the other end is connected to the outside of the shell through an external connection wire.

[0005] The utility model is further provided as follows: the push spring is supported at a position on the lower surface of the dynamic contact rod from the swing shaft to the direction of the dynamic contact point or at a position on the upper surface of the dynamic contact rod from the swing shaft to the direction away from the dynamic contact point.

[0006] The utility model is further provided as follows: the axis of the push spring is tangent to the swing arc line of the dynamic contact rod.

[0007] The utility model is further provided as follows: the dynamic contact rod is provided with a positioning part for centering or positioning the push spring; the action chamber is provided with a support member for providing positioning and support for the other end of the push spring.

[0008] The utility model further sets up, the positioning part is the convex that stamping is resisted to the push spring, the push spring is tower spring, and the small end or big end is supported to the movable contact lever and is positioned through the convex adaptation at the same time.

[0009] The utility model further sets up, the swing rod is equipped with reset spring for swinging back after the swing rod is pushed down by the push rod of the tripping assembly.

[0010] The utility model further sets up, the lower end of the linkage rod is resisted to the movable contact lever, and the other end is from the upper end of the shell and is located in the front side of the tripping chamber, one side of the linkage rod is equipped with linkage groove to the tripping chamber, and the swing end of the swing rod is located in the linkage groove, and the end of the linkage rod away from the movable contact lever is equipped with control head.

[0011] The utility model further sets up, still include the unlocking swing arm in the front of tripping assembly, the middle section of unlocking swing arm is hinged to tripping assembly or shell and the hinging axis is towards the front-back direction of shell, the lower section of unlocking swing arm is located on the side of swing rod before the swing rod swings down, and the swing rod swings back to leave swing space for the lower end of unlocking swing arm and makes the lower end of unlocking swing arm swing to the upper side of swing rod and is resisted to swing rod and is locked to swing rod.

[0012] The utility model further sets up, the unlocking swing arm is equipped with locking spring, and the lower end of unlocking swing arm swings to the upper side of swing rod under the drive of locking spring after the swing rod swings back, and the upper end of unlocking swing arm is equipped with unlocking part.

[0013] The utility model further sets up, and the outer wall of external connection wire of external connection shell is equipped with insulating layer and the terminal is equipped with conductive pressure connecting piece.

[0014] The utility model has the advantages of:

[0015] 1, the one end of hardware outside the shell and the external connection wire of external connection shell are all used for wiring, the other end of tripping coil is electrically connected with the movable contact lever near the hinging position through flexible wire, so as to reduce the influence of flexible wire flexibility on the movement of movable contact lever, under normal state, the movable contact lever swings up under the thrust of push spring, so that the movable contact point and static contact point are in contact and realize conduction, when the current is too large, the push rod of tripping assembly pushes down the swing rod and makes the linkage rod go down and push down the movable contact lever, so that the movable contact point and static contact point are separated and arc extinguishing grid is used for arc extinguishing, and the push spring is stored and compressed simultaneously, this structure only needs one movable contact point and static contact point, since the movable contact point and static contact point are generally noble metal, material cost is effectively saved, process difficulty is reduced, service life and reliability are improved, the utility model discloses the following beneficial effects:

[0016] 2. When the push spring is supported at the lower surface of the moving contact rod from the swing shaft towards the moving contact point, one end of the moving contact rod is hinged to the swing shaft, and the other end is set with the moving contact point; when the push spring is supported at the upper surface of the moving contact rod from the swing shaft away from the moving contact point, the swing shaft is hinged to the middle section of the moving contact rod, and the push spring is kept away from the arc-extinguishing grid to reduce the influence of high temperature on the push spring during arc ignition; the force on the push spring is perpendicular to the swing direction of the moving contact rod. This structure allows the other end of the push spring to tilt away from the arc-extinguishing grid when the push spring is supported at the lower surface of the moving contact rod from the swing shaft towards the moving contact point, so as to reduce the influence of high temperature on the push spring during arc ignition.

[0017] 3. The upper end of the connecting rod extends out from the upper end of the housing to be adapted to the action mechanism of the equipment; while the connecting groove is adapted to the swing arm to control the action of the connecting rod, it also provides the connecting rod with the freedom of up and down sliding stroke before the swing arm moves.

[0018] 4. When the trip coil is activated, the moving contact and the stationary contact disconnect. At the same time, the lever moves downward to allow the unlocking arm to swing and create space. After the unlocking arm swings, its lower end blocks the lever from resetting, so that the connecting rod maintains its resistance to the moving contact rod and prevents the moving contact and the stationary contact from re-engaging. When resetting is required, swing the unlocking arm in the opposite direction to remove it from above the lever so that the lever, connecting rod and moving contact rod can be reset.

[0019] 5. The locking spring is preferably a torsion spring located at the hinge position of the unlocking swing arm; the unlocking part is used to adapt to the action mechanism of the equipment. Attached Figure Description

[0020] Figure 1 This is a first-person perspective three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a schematic diagram of the overall second-view three-dimensional structure of this utility model.

[0022] Figure 3 This is a first-view three-dimensional structural diagram of the tripping assembly of this utility model.

[0023] Figure 4 This is a two-dimensional structural diagram of the tripping assembly of this utility model from a second perspective.

[0024] Figure 5 This is a three-dimensional structural diagram of the push spring in the closed state of the first installation method of this utility model.

[0025] Figure 6 This is a three-dimensional structural diagram of the push spring of this utility model in the first installation form in the disconnected state.

[0026] Figure 7 This is a three-dimensional structural diagram of the closed state of the push spring in the second installation form of this utility model.

[0027] Figure 8 The second mounting form of the push spring is disconnected state three-dimensional structure schematic diagram.

[0028] The meaning of the reference numeral in the figure is as follows: 10 - housing; 11 - arc extinguishing chamber; 12 - action chamber; 121 - swing shaft; 122 - push spring; 123 - support; 13 - tripping chamber; 20 - arc extinguishing grid; 30 - hardware; 31 - static contact; 40 - moving contact rod; 41 - moving contact; 42 - positioning portion; 50 - tripping assembly; 51 - swing lever; 511 - reset spring; 52 - linkage rod; 521 - linkage groove; 522 - control head; 53 - push rod; 54 - tripping coil; 55 - flexible wire; 56 - external wire; 561 - insulation layer; 562 - conductive pressure connector; 60 - unlocking swing arm; 61 - locking spring; 62 - unlocking portion. DETAILED DESCRIPTION

[0029] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0030] Reference Figures 1 to 8 As Figures 1 to 8 shown in a kind of push type arc extinguishing grid front single contact contact module, including housing 10, the housing 10 includes the arc extinguishing chamber 11 located at its front end and is equipped with arc extinguishing grid 20, the action chamber 12 located at its rear end and the tripping chamber 13 located above the action chamber 12, further include the hardware 30 in the housing 10 above the arc extinguishing chamber 11, the hardware 30 one end is from the housing 10 front end and extends, the other end extends to the side of arc extinguishing grid 20 towards the action chamber 12 and forms the static contact 31 towards down;The action chamber 12 is equipped with the moving contact rod 40 articulated by swing shaft 121, the moving contact rod 40 is swung under the push of push spring 122 to make the moving contact 41 located at its front end swing and keep normally closed contact with static contact 31;The tripping chamber 13 is equipped with tripping assembly 50 and swing lever 51 below tripping assembly 50, the swing lever 51 front end is towards the housing 10 front end and rear end is articulated with the housing 10;Further include the linkage rod 52 that can slide up and down in the action chamber 12, the push rod 53 of tripping assembly 50 pushes swing lever 51 to make its swing end push linkage rod 52 down to synchronously push moving contact rod 40 down swing and make moving contact 41 and static contact 31 separate;The tripping coil 54 of tripping assembly 50 one end is electrically connected with moving contact rod 40 by flexible wire 55, the other end is connected out of the housing 10 by external wire 56.

[0031] In the structure, the one end of the hardware 30 exposed outside the shell 10 and the external connecting wire 56 connected outside the shell 10 are both used for wiring, the other end of the release coil 54 is electrically connected to the moving contact rod 40 near the hinged position through the flexible wire 55, so as to reduce the influence of the flexibility of the flexible wire 55 on the movement of the moving contact rod 40; under the normal state, the moving contact rod 40 swings upward under the pushing force of the push spring 122, so that the moving contact 41 is in contact with the static contact 31 to realize conduction, when the current is too large, the push rod 53 of the release assembly 50 pushes the swing rod 51 to swing downward and makes the connecting rod 52 push the moving contact rod 40 to swing downward, so that the moving contact 41 is separated from the static contact 31 and the arc extinguishing grid 20 is used for arc extinguishing, and at the same time, the push spring 122 is compressed to store force; this structure only needs one moving contact 41 and one static contact 31, since the moving contact 41 and the static contact 31 are generally made of noble metal, the material cost is effectively saved, the process difficulty is reduced, and the service life and reliability are improved.

[0032] In the embodiment, the push spring 122 is supported at the lower surface position of the moving contact rod 40 from the swing shaft 121 to the direction of the moving contact 41 or at the upper surface position of the moving contact rod 40 from the swing shaft 121 to the direction away from the moving contact 41.

[0033] In the structure, when the push spring 122 is supported at the lower surface position of the moving contact rod 40 from the swing shaft 121 to the direction of the moving contact 41, one end of the moving contact rod 40 is hinged to the swing shaft 121, and the other end is provided with the moving contact 41; when the push spring 122 is supported at the upper surface position of the moving contact rod 40 from the swing shaft 121 to the direction away from the moving contact 41, the swing shaft 121 is hinged to the middle position of the moving contact rod 40, and the push spring 122 is away from the arc extinguishing grid 20, so as to reduce the influence of high temperature on the push spring 122 when the arc is drawn.

[0034] In the embodiment, the axis of the push spring 122 is tangent to the swing arc line of the moving contact rod 40.

[0035] In the structure, the force of the push spring 122 is perpendicular to the swing direction of the moving contact rod 40, and when the push spring 122 is supported at the lower surface position of the moving contact rod 40 from the swing shaft 121 to the direction of the moving contact 41, the other end of the push spring 122 is inclined to the direction away from the arc extinguishing grid 20, so as to reduce the influence of high temperature on the push spring 122 when the arc is drawn.

[0036] In the embodiment, the moving contact rod 40 is provided with a positioning part 42 for centering or positioning the push spring 122; the moving chamber 12 is provided with a supporting part 123 for providing positioning and support for the other end of the push spring 122.

[0037] In the structure, the displacement of the push spring 122 can be avoided.

[0038] In this embodiment, the positioning part 42 is a protrusion formed by pressing against the push spring 122; the push spring 122 is a tower spring, whose small end or large end supports the moving contact rod 40 while being positioned by the protrusion.

[0039] In the above structure, the tower spring has the advantage of a high compression ratio, and its small end is preferably supported against the moving contact rod 40.

[0040] In this embodiment, the swing arm 51 is provided with a return spring 511 for resetting the upper swing after the push rod 53 of the trip assembly 50 pushes the lower swing.

[0041] In the above structure, the return spring 511 is preferably a tension spring.

[0042] In this embodiment, the lower end of the linkage rod 52 abuts against the moving contact rod 40, and the other end extends out from the upper end of the housing 10 and is located in front of the trip chamber 13; the side of the linkage rod 52 facing the trip chamber 13 is provided with a linkage groove 521, and the swing end of the swing rod 51 is located in the linkage groove 521; the end of the linkage rod 52 away from the moving contact rod 40 is provided with a control head 522.

[0043] In the above structure, the upper end of the linkage rod 52 extends out from the upper end of the housing 10 and is used to adapt to the action mechanism of the equipment; the linkage groove 521 adapts to the rocker arm 51 to control the action of the linkage rod 52, and also provides the linkage rod 52 with the freedom of up and down sliding stroke before the rocker arm 51 moves.

[0044] In this embodiment, an unlocking swing arm 60 is also included in front of the tripping assembly 50. The middle section of the unlocking swing arm 60 is hinged to the tripping assembly 50 or the housing 10 and the hinge axis is oriented in the front-back direction of the housing 10. Before the swing rod 51 swings down, the lower section of the unlocking swing arm 60 is located on the side of the swing rod 51. After the swing rod 51 swings down, swing space is left for the lower end of the unlocking swing arm 60 and the lower end of the unlocking swing arm 60 swings up to the top of the swing rod 51 and abuts against the swing rod 51 to reset and lock the swing rod 51.

[0045] In the above structure, when the trip coil 54 is activated, the moving contact 41 and the stationary contact 31 are disconnected. At the same time, the swing arm 51 moves downward to swing the unlocking swing arm 60 to leave space. After the unlocking swing arm 60 swings, its lower end blocks the swing arm 51 from resetting, so that the connecting rod 52 maintains the resistance to the moving contact rod 40 to prevent the moving contact 41 from re-engaging with the stationary contact 31. When resetting is required, the unlocking swing arm 60 is swung in the opposite direction to move it away from the swing arm 51, so that the swing arm 51, the connecting rod 52, and the moving contact rod 40 can be reset.

[0046] In this embodiment, the unlocking swing arm 60 is provided with a locking spring 61. After the swing rod 51 swings down, the lower end of the unlocking swing arm 60 swings to above the swing rod 51 under the drive of the locking spring 61. The upper end of the unlocking swing arm 60 is provided with an unlocking part 62.

[0047] In the structure, the locking spring 61 is preferably a torsion spring located at the hinged position of the unlocking swing arm 60; the unlocking part 62 is used for adapting with the action mechanism of the device.

[0048] In the embodiment, the outer wall of the external connecting wire 56 of the external connecting shell 10 is provided with an insulating layer 561 and the end is provided with a conductive pressure connector 562.

[0049] In the structure, the conductive pressure connector 562 is used for providing the wiring function on the device.

[0050] The above is only the preferred embodiment of the present application, it should be pointed out that, for those skilled in the technical field, without departing from the technical principles of the present application, can make a number of improvements and variations, the above assumptions of these improvements and variations should also be considered as the protection scope of the present application.

Claims

1. A push-type arc chute front single contact contact module comprising a housing, characterized in that: The shell comprises an arc-extinguishing chamber at its front end and provided with arc-extinguishing grids, an operating chamber at its back end, and a tripping chamber above the operating chamber, and further comprises hardware inside the shell above the arc-extinguishing chamber, one end of the hardware extending out of the front end of the shell and the other end extending to one side of the arc-extinguishing grids facing the operating chamber and forming a downward static contact; the operating chamber is provided with a movable contact lever hinged by a pivot, the movable contact lever swings under the push of a push spring to make the movable contact at the front end of the movable contact lever swing upward and keep constant closed contact with the static contact; the tripping chamber is provided with a tripping assembly and a swing lever below the tripping assembly, the swing lever has its front end facing the front end of the shell and its back end hinged with the shell; further comprising a connecting lever inside the operating chamber which can slide up and down, the push rod of the tripping assembly pushes the swing lever to make the swing end of the swing lever push the connecting lever to go down and thus synchronously push the movable contact lever to swing downward to make the movable contact separate from the static contact; the tripping assembly has its tripping coil one end electrically connected with the movable contact lever through a flexible wire and the other end connected out of the shell through an external wire.

2. A single contact module for a push-type arc chute according to claim 1, characterized in that: The push spring is supported at a position on the lower surface of the movable contact lever from the pivot to the direction of the movable contact or at a position on the upper surface of the movable contact lever from the pivot to the direction away from the movable contact.

3. A single contact module for a push-type arc chute according to claim 2, wherein: The axis of the push spring is tangent to the swing arc of the movable contact lever.

4. A single contact module for use in front of a push-type arc-extinguishing grid according to claim 2 or 3, characterized in that: The movable contact lever is provided with a positioning part for centering or positioning the push spring; the operating chamber is provided with a support member for providing positioning and support for the other end of the push spring.

5. A single contact pre-chamber module for a push force arc chute according to claim 4, wherein: The positioning part is a protrusion punched in the direction of abutting the push spring; the push spring is a tower spring, the small end or the large end of which abuts and supports the movable contact lever and is positioned through the protrusion fitting.

6. A single contact module for use in front of a push-type arc chute, according to claim 1, characterized in that: The swing lever is provided with a reset spring for resetting after swinging upward under the push of the push rod of the tripping assembly.

7. A single contact module for use in front of a push-type arc chute, according to claim 1, characterized in that: The lower end of the connecting lever abuts the movable contact lever and the other end extends out of the upper end of the shell and is located at the front side of the tripping chamber; one side of the connecting lever facing the tripping chamber is provided with a connecting groove, the swing end of the swing lever is located in the connecting groove; the end of the connecting lever away from the movable contact lever is provided with a control head.

8. A single contact module for use in front of a push-type arc chute according to claim 1, characterized in that: Further comprising an unlocking swing arm in front of the tripping assembly, the middle section of the unlocking swing arm is hinged with the tripping assembly or the shell and the hinged axis faces the front-back direction of the shell; the lower section of the unlocking swing arm is located at the side of the swing lever before the swing lever swings downward, and the swing lever swings downward to leave a swing space for the lower end of the unlocking swing arm after the swing lever swings downward and make the lower end of the unlocking swing arm swing above the swing lever and abut the swing lever to reset and lock the swing lever.

9. A single contact pre-module for a push-type arc-extinguishing grid according to claim 8, characterized in that: The unlocking swing arm is provided with a locking spring, the lower end of the unlocking swing arm swings above the swing lever under the drive of the locking spring after the swing lever swings downward, and the upper end of the unlocking swing arm is provided with an unlocking part.

10. A single contact module for use in front of a push-type arc chute, according to claim 1, characterized in that: The external wall of the external wire connected out of the shell is provided with an insulating layer and the terminal end is provided with a conductive pressure contact piece.

Images