CN214012775U - Switch anti-misoperation wiring device - Google Patents

Abstract

The utility model provides a switch prevents mistake termination which characterized in that: it is including preventing reverse connection device (1), the iron core (106) that moves of preventing reverse connection device (1) links mutually through connecting piece (2) or directly with trigger (3), when the correct input forward direction electric current of switch wiring, the iron core (106) that moves of preventing reverse connection device (1) passes through connecting piece (2) or directly unlocks to trigger (3), the switch can close the separating brake action operation, when switch wiring error input reverse direction electric current, thereby prevent that moving iron core (106) of reverse connection device (1) locks the combined floodgate action of making the switch can't accomplish the combined floodgate action operation through connecting piece (2) or directly to trigger (3). The working state of the whole mis-wiring prevention protection device is closely related to the direction of the access current, and only when the dangerous state of mis-wiring is completely removed, the locking of the mis-wiring prevention protection device on the closing operation of the switch can be removed, so that the reliability of the mis-wiring prevention protection device of the switch is improved by the whole technical scheme.

Description

Switch anti-misoperation wiring device

Technical Field

The utility model belongs to the technical field of the switch, specifically say so and relate to a switch prevents mistake termination.

Background

The words switch are to be interpreted as open and closed. It refers to an element that can open a circuit, interrupt a current, or cause it to flow to other circuits. The most common switches are electromechanical devices that are operated by a person, in which there are one or several contacts. The "closed" of a contact indicates that the contact is conductive, allowing current to flow; an "open" of the switch indicates that the contact is not conductive, creating an open circuit, and not allowing current to flow. The development history of the switch is from an original knife switch requiring manual operation to an intelligent switch applied to various large electrical control equipment, the functions of the switch are more and more, the safety is higher, especially in the large intelligent equipment, the function of the intelligent switch is particularly obvious, but many places still exist, for example, a switch device requiring manual operation is still installed in a large building.

In a direct current circuit system, one or more groups of protection switches are often required to be configured, and when a constructor operates the direct current circuit system, the risk of reversely connecting a protection switch circuit exists due to the influence of various factors. When miswiring occurs, not only can components in the circuit be damaged, but also safety accidents can be caused. In the prior art, in order to avoid damage of a wrong wiring to a circuit system, a wrong wiring protection device needs to be installed conventionally, but the wrong wiring protection device is triggered by a pulse electric signal commonly at present, once the pulse electric signal disappears, a closing locking device for the wrong wiring protection device unlocks and restores to an initial state, and at the moment, the dangerous state of the wrong wiring is not necessarily solved, circuit components are still easily damaged, and safety accidents are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a switch error-preventing wiring device aiming at the defects that the protection switch circuit is easy to be connected reversely in the existing direct current circuit system to cause the damage of components and parts and even to cause safety accidents, when the external power supply and the positive and negative electrodes of the switch are correctly wired, the current with correct polarity is input to the protection device, the protection device unlocks the trigger piece of the switch, and the switch can be normally switched on and off; when the external power supply is in wrong connection with the positive electrode and the negative electrode of the switch, current with wrong polarity is input to the protection device, and the protection device locks the trigger piece of the switch, so that the switch cannot complete closing operation. The working state of the false wiring prevention protection device corresponds to the positive and negative wiring of the external power supply and the switch, and the switch can be normally switched on and off only when the positive and negative wiring of the external power supply and the switch is correct, so that the reliability of the false wiring prevention protection device of the switch is improved.

Technical scheme

In order to realize the technical purpose, the utility model provides a pair of mistake termination is prevented to switch, its characterized in that: it is including preventing reverse connection device, prevent that moving iron core of reverse connection device passes through the connecting piece or directly links mutually with the trigger piece, when the correct input forward direction electric current of switch wiring, prevent moving iron core of reverse connection device and pass through the connecting piece or directly to the trigger piece unblock, the switch can close the separating brake action operation, when switch wiring error input reverse direction electric current, thereby prevent moving iron core of reverse connection device and pass through the connecting piece or directly lock the combined floodgate action to the trigger piece and make the switch can't accomplish combined floodgate action operation.

Furthermore, two leads of the coil assembly in the anti-reverse device are respectively connected to the positive and negative terminals of the switch through a conversion circuit, and the conversion circuit converts the high voltage of the power supply into a low voltage which can be used for the coil to work.

Further, the reverse connection preventing device comprises a support, a plurality of coil assemblies are arranged in an inner cavity of the support, at least one permanent magnet is arranged between the plurality of coil assemblies, a cover plate covers the inner cavity of the support, a movable iron core is arranged in the plurality of coil assemblies and can slide back and forth in the coil assemblies, one end of the movable iron core penetrates through the cover plate and extends out of the support, and static iron core assemblies are respectively arranged on the corresponding support and the corresponding cover plate and are located at two ends of the coil assemblies, and the movable iron core can keep an initial state or slide under the action of magnetic fields generated by the coil assemblies and the magnetic fields of the at least one permanent magnet, so that a trigger is unlocked through a connecting piece or directly or the closing action of the trigger is locked.

Further, a plurality of coil pack include coil pack one and coil pack two, coil pack one includes coil one, coil one dress is on coil skeleton one, coil pack two includes coil two, coil two is adorned on coil skeleton two, moves the iron core dress and is in the hole of coil skeleton one and coil skeleton two and can make a round trip to slide in the hole.

Further, quiet iron core group is including quiet iron core one and quiet iron core two, quiet iron core one and quiet iron core two correspond the dress respectively on apron and support.

Further, the at least one permanent magnet needs to be installed towards the movable iron core with the same polarity.

Further, the support is made of ferromagnetic materials.

Further, the cover plate is made of ferromagnetic materials.

Further, the trigger piece is a draw bar.

Advantageous effects

The utility model provides a pair of mistake termination is prevented to switch avoids the commonly used pulse signal of telecommunication of present mistake wiring protection device to trigger, in case when pulse signal disappears, a closing locking device for mistake wiring protection device removes the locking promptly to resume initial condition, and at this moment, the dangerous state of mistake wiring is not necessarily solved, still appears damaging circuit components and parts easily, and leads to the incident to take place.

In the protection device, when the wiring direction is correct and current in the correct direction is input, the protection device does not influence the switching-on and switching-off operation of the switch device, when the wiring direction is wrong and reverse current is input, the protection device locks the switching-on operation of the switch, so that the switch can not complete the switching-on operation, the working state of the whole anti-miswiring protection device is closely associated with the direction of the access current, only when the dangerous state of miswiring is completely removed, the locking of the miswiring protection device on the switching-on operation of the switch can be removed, and the reliability of the switch miswiring protection device is improved by the whole technical scheme.

Drawings

Fig. 1 is a schematic diagram of the embodiment of the present invention in a freely opening and closing state;

fig. 2 is a schematic diagram of the embodiment of the present invention in a closing action locking state;

FIG. 3a is a schematic product diagram of an anti-reverse connection device in an embodiment of the present invention;

FIG. 3b is an exploded view of an anti-reverse connection device according to an embodiment of the present invention;

FIG. 3c is a schematic diagram of the polarity of the permanent magnet of the reverse-connection preventing device in the embodiment of the present invention;

FIG. 4 is a schematic structural diagram of the anti-reversing device according to the embodiment of the present invention, in which the movable iron core is located at the first position;

FIG. 5 is a schematic structural diagram of the anti-reversing device according to the embodiment of the present invention, in which the movable iron core is located at the second position;

FIG. 6 is a schematic diagram of the forward current magnetic circuit switched in when the reverse connection preventing device is in the first position according to the embodiment of the present invention;

FIG. 7 is a schematic diagram of the forward current magnetic circuit switched in when the reverse connection preventing device is in the second position according to the embodiment of the present invention;

FIG. 8 is a schematic diagram of a reverse current magnetic circuit connected when the reverse connection preventing device is in the first position according to the embodiment of the present invention;

FIG. 9 is a schematic diagram of a reverse current magnetic circuit connected when the reverse connection preventing device is in the second position according to the embodiment of the present invention;

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Example 1

As shown in fig. 1 and 2, the present embodiment provides a switch mis-connection preventing device, which includes a reverse connection preventing device 1, a moving iron core 106 of the reverse connection preventing device 1 is linked with a trigger 3 through a connecting piece 2, when a switch connection correctly inputs a forward current, the moving iron core 106 of the reverse connection preventing device 1 unlocks the trigger 3 through the connecting piece 2, the switch can perform a switching on and switching off operation, and when the switch connection incorrectly inputs a reverse current, the moving iron core 106 of the reverse connection preventing device 1 locks a switching on operation of the trigger 3 through the connecting piece 2, so that the switch cannot complete the switching on operation. Two lead wires of the coil assembly 102 in the reverse connection preventing device 1 are respectively connected to positive and negative terminals of the switch through a conversion circuit, and the conversion circuit converts the high voltage of the power supply into a low voltage which can be used for the coil to work.

Further, in this embodiment, the triggering member 3 is a traction rod, as shown in fig. 3a and 3b, the reverse connection preventing device 1 includes a bracket 101, and the bracket 101 is made of a ferromagnetic material. A plurality of coil assemblies 102 are installed in the inner cavity of the support 101, and at least one permanent magnet 104 is disposed between the plurality of coil assemblies 103, as shown in fig. 3c, the at least one permanent magnet 104 needs to be installed toward the movable iron core 106 with the same polarity, in this embodiment, the number of the permanent magnets 104 is 4. The cover plate 105 covers the inner cavity of the bracket 101, and the cover plate 105 is made of ferromagnetic material. The movable iron core 106 is arranged in the coil assemblies 102 and can slide back and forth in the coil assemblies 102, one end of the movable iron core 106 penetrates through the cover plate 105 and extends out of the support 101, the static iron core group 103 is respectively arranged on the corresponding support 101 and the corresponding cover plate 105 and is positioned at two ends of the coil assemblies 102, and the movable iron core 106 can keep an initial state or slide under the action of a magnetic field generated by the coil assemblies 102 and the magnetic field of at least one permanent magnet 104 so as to unlock the trigger 3 through the connecting piece 2 or lock the closing action of the trigger 3.

The plurality of coil assemblies 102 comprise a first coil assembly 102a and a second coil assembly 102b, the first coil assembly 102a comprises a first coil 102a01, the first coil 102a01 is mounted on a first bobbin 102a02, the second coil assembly 102b comprises a second coil 102b01, the second coil 102b01 is mounted on a second bobbin 102b02, and the movable iron core 106 is mounted in and capable of sliding back and forth in the inner holes of the first bobbin 102a02 and the second bobbin 102b 02. The static iron core group 103 comprises a first static iron core 103a and a second static iron core 103b, and the first static iron core 103a and the second static iron core 103b are correspondingly arranged on the cover plate 105 and the bracket 101 respectively.

As shown in fig. 4, the movable iron core 106 is initially located at a first position in the push-out state, and when a forward current signal is received, as shown in fig. 6, a trigger current generates a magnetic flux Φ 1 through the coil assembly 102, and under the action of the magnetic flux Φ 1 and the magnetic flux Φ 2 of the permanent magnet 104, the movable iron core 106 does not slide and the movable iron core 106 is still located at the first position. At this time, the trigger 3 is in a free unlocking state, and the switch can freely perform switching on and off operations as shown in fig. 1.

As shown in fig. 5, the movable iron core 106 is initially located at the second position of the suction state, when receiving the forward current signal, as shown in fig. 7, the trigger current generates a magnetic flux Φ 3 through the coil assembly 102, and the movable iron core 106 moves outward of the bracket 101 to the first position under the action of the magnetic flux Φ 4 and the magnetic flux Φ 4 of the permanent magnet 104; at this time, the trigger 3 is still in a free unlocking state, and the switch can freely perform switching on and off operations as shown in fig. 1.

As shown in fig. 4, the movable iron core 106 is initially located at a first position in the push-out state, when receiving a reverse current signal, as shown in fig. 8, a trigger current generates a magnetic flux Φ 5 through the coil assembly 102, and the movable iron core 106 moves into the bracket 101 to a second position under the action of the magnetic flux Φ 5 and a magnetic flux Φ 6 of the permanent magnet 102 b; at this time, the bracket 101 locks the closing operation of the trigger 3 through the connecting member 2, so that the switch cannot complete the closing operation as shown in fig. 2.

As shown in fig. 5, the plunger 106 is initially located at the second position of the suction state, and when receiving the reverse current signal, as shown in fig. 9, the trigger current generates a magnetic flux Φ 7 through the coil assembly 102, and the plunger 106 is still located at the second position without sliding under the action of the magnetic flux Φ 7 and the magnetic flux Φ 8 of the permanent magnet 102 b. At this time, the closing operation of the trigger 3 is in a locked state, and the switch cannot complete the closing operation as shown in fig. 2.

In summary, two leads of the coil assembly 102 in the reverse connection preventing device 1 are respectively connected to the positive and negative terminals of the switch through the switching circuit, and no matter the initial state of the reverse connection preventing device is the first position as shown in fig. 1 or the second position as shown in fig. 2, when the connection is correct, the reverse connection preventing device automatically changes to the state as shown in fig. 1, and the switch can be normally switched on and off; when the wiring is connected reversely, the reverse connection preventing device can automatically change to the state shown in the attached figure 2, and the switch can not carry out normal closing operation.

Example 2

The utility model also provides an embodiment, prevent that the movable iron core 106 of reverse connection device 2 directly links mutually with trigger 3. The other structures and operation principles are the same as those of embodiment 1, and will not be described in further detail again.

And simultaneously, need emphasize the utility model discloses in prevent reverse-connection device not only be limited to the utility model discloses the embodiment provides a structure, any have with this embodiment technical principle function the same prevent reverse-connection device all should fall into utility model's protection scope.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (9)

1. The utility model provides a switch prevents mistake termination which characterized in that: it is including preventing reverse connection device (1), the iron core (106) that moves of preventing reverse connection device (1) links mutually through connecting piece (2) or directly with trigger (3), when the correct input forward direction electric current of switch wiring, the iron core (106) that moves of preventing reverse connection device (1) passes through connecting piece (2) or directly unlocks to trigger (3), the switch can close the separating brake action operation, when switch wiring error input reverse direction electric current, thereby prevent that moving iron core (106) of reverse connection device (1) locks the combined floodgate action of making the switch can't accomplish the combined floodgate action operation through connecting piece (2) or directly to trigger (3).

2. The switch mis-wiring prevention device as claimed in claim 1, wherein: two leads of a coil assembly (102) in the reverse connection preventing device (1) are respectively connected to positive and negative terminals of the switch through a conversion circuit, and the conversion circuit converts high voltage of a power supply into low voltage capable of enabling the coil to work.

3. The switch mis-wiring prevention device as claimed in claim 1, wherein: the reverse connection preventing device (1) comprises a support (101), a plurality of coil assemblies (102) are arranged in an inner cavity of the support (101), at least one permanent magnet (104) is arranged between the coil assemblies (102), the inner cavity of the support (101) is covered by a cover plate (105), a movable iron core (106) is arranged in the coil assemblies (102) and can slide back and forth in the coil assemblies (102), one end of the movable iron core (106) penetrates through the cover plate (105) to extend out of the support (101), a static iron core group (103) is respectively arranged on the corresponding support (101) and the cover plate (105) and is positioned at two ends of the coil assemblies (102), and the movable iron core (106) can keep an initial state or slide under the action of a magnetic field generated by the coil assemblies (102) and the magnetic field of at least one permanent magnet (104) so as to directly unlock the trigger (3) or lock the closing action of the trigger (3) through a connecting piece (2) .

4. The switch mis-wiring prevention device as claimed in claim 3, wherein: the coil assemblies (102) comprise a first coil assembly (102a) and a second coil assembly (102b), the first coil assembly (102a) comprises a first coil (102a01), the first coil (102a01) is mounted on the first bobbin (102a02), the second coil assembly (102b) comprises a second coil (102b01), the second coil (102b01) is mounted on the second bobbin (102b02), and the movable iron core (106) is mounted in inner holes of the first coil bobbin (102a02) and the second coil bobbin (102b02) and can slide back and forth in the inner holes.

5. The switch mis-wiring prevention device as claimed in claim 4, wherein: the static iron core group (103) comprises a first static iron core (103a) and a second static iron core (103b), and the first static iron core (103a) and the second static iron core (103b) are correspondingly arranged on the cover plate (105) and the bracket (101).

6. The switch mis-wiring prevention device as claimed in claim 3, wherein: the at least one permanent magnet (104) is mounted with the same polarity towards the movable iron core (106).

7. The switch mis-wiring prevention device as claimed in claim 3, wherein: the support (101) is made of ferromagnetic materials.

8. The switch mis-wiring prevention device as claimed in claim 3, wherein: the cover plate (105) is made of ferromagnetic material.

9. The switch mis-wiring prevention device as claimed in claim 1, wherein: the trigger piece (3) is a draw bar.

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