CN216649653U

CN216649653U - Contactless contactor with overcurrent and overload protection device

Info

Publication number: CN216649653U
Application number: CN202122839109.2U
Authority: CN
Inventors: 代庆凯
Original assignee: Shandong Huakai Automation Technology Co ltd
Current assignee: Shandong Huakai Automation Technology Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-05-31
Anticipated expiration: 2031-11-19

Abstract

The utility model discloses a contactless contactor with an overcurrent and overload protection device, which comprises a shell and an overload protection unit, wherein the shell is provided with a first contact and a second contact; a housing: the middle part of the bottom wall surface of the inner cavity is provided with a bidirectional thyristor, the rear end of the bottom wall surface of the inner cavity of the shell is provided with an electronic trigger, the middle part of the inner cavity of the shell is provided with a partition board, the left side and the right side of the upper surface of the shell are both provided with connecting columns, and an opening part of the upper surface of the shell is inserted with a protection board through an insertion hole; an overload protection unit: including leading electrical seat, insulating type shell fragment, conductive head and fuse, leading electrical seat horizontal symmetry sets up in the upper surface of division board, and the upper surface of leading electrical seat all is equipped with the insulating type shell fragment of vertical symmetric distribution, and equal joint has conductive head between vertical two adjacent insulating type shell fragments, and conductive head links to each other with the conductive seat that the homonymy corresponds respectively, and this contactless contactor with overcurrent overload protection device has avoided the condition that takes place to rock when using, ensures that overcurrent overload protection device is effective reliable.

Description

Contactless contactor with overcurrent and overload protection device

Technical Field

The utility model relates to the technical field of contactless contactors, in particular to a contactless contactor with an overcurrent and overload protection device.

Background

The contactless contactor is also called a solid-state switch, is a novel switch, thoroughly abandons mechanical characteristics, has no mechanical operating mechanism and contact, is completely based on semiconductor properties, has no contact, no fracture and no noise, and currently, the contactless contactor is usually added with an overcurrent and overload protection device when in use, different temperatures are required in the enclosed space of the overload protection device to match the corresponding overload current for different use occasions, so that the heat-sensitive plate can be turned over and cut off when the over-current value is reached, and can be used for protecting the contactless contactor, due to the structural reason, other circuits can be ignited at high temperature, the service life of the contactless contactor is shortened, the reliability of the overcurrent overload protection device is not high enough, and workers are inconvenient to replace, so that the contactless contactor with the overcurrent overload protection device is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides a contactless contactor with an overcurrent and overload protection device, so that the overcurrent and overload protection device is ensured to be effective and reliable, and the problems in the background art can be effectively solved.

In order to achieve the purpose, the utility model provides the following technical scheme: a contactless contactor with overcurrent and overload protection device comprises a shell and an overload protection unit;

a housing: the middle part of the bottom wall surface of the inner cavity is provided with a bidirectional thyristor, the rear end of the bottom wall surface of the inner cavity of the shell is provided with an electronic trigger, the middle part of the inner cavity of the shell is provided with a partition plate, the left side and the right side of the upper surface of the shell are both provided with connecting columns, and an opening part of the upper surface of the shell is inserted with a protective plate through a jack;

an overload protection unit: the insulating elastic sheets are longitudinally and symmetrically distributed on the upper surface of each conductive seat, the conductive heads are clamped between two longitudinally adjacent insulating elastic sheets, the conductive heads are respectively connected with the conductive seats corresponding to the same side, and the two conductive heads are connected through the safety fuse;

wherein: the input of electronic trigger passes through the wire and is connected with the spliced pole output electricity on right side, the input of bidirectional thyristor is connected to electronic trigger's output electricity, bidirectional thyristor's output passes through the wire and is connected with the conducting seat input electricity on right side, the conducting seat output on right side is connected with left conducting seat input electricity, left conducting seat output passes through the wire and is connected with left spliced pole input electricity, the effect of protection has been played to contactless contactor, avoid the high temperature that the fuse produced to ignite other circuits, the life of contactless contactor has been prolonged greatly, the condition of rocking has been avoided taking place when using, ensure that overcurrent overload protection device is effective reliable, make the staff can be more convenient when changing.

Furthermore, the overload protection unit further comprises a flame-retardant protection tube, the flame-retardant protection tube is arranged between the two conductive heads, and the fuse wire is located inside the flame-retardant protection tube to avoid high temperature generated by the fuse wire from igniting other circuits.

Further, still include spacing unit, spacing unit sets up respectively in the lateral surface of two conductive seats, and spacing unit is contradicted with the outside end of conductive head respectively, has avoided the condition that takes place to rock when using.

Furthermore, the limiting unit comprises a fixing plate, and the fixing plates are respectively arranged on the outer side surfaces of the two conductive seats, so that the overcurrent and overload protection device is ensured to be effective and reliable.

Further, spacing unit still includes spring and insulation board, the spring set up respectively in with the fixed plate medial surface, the inboard end of spring all is equipped with the insulation board, the insulation board conflicts with the outside end of two conductive heads respectively for the staff can be more convenient when changing.

Further, the upper surface of the conductive seat is provided with arc-shaped conductive contacts which are respectively in close contact with the outer arc surfaces of the conductive heads, so that the conductive seat and the conductive heads can be more stable when conducting.

Furthermore, the four corners of the lower surface of the shell are provided with symmetrically distributed mounting holes, so that the installation is convenient for workers.

Compared with the prior art, the utility model has the beneficial effects that: this contactless contactor with overcurrent overload protection device has following benefit:

1. when the current is overlarge and overloaded, the fuse wire can be fused by the high temperature generated by the current, so that the contactless contactor is protected, the flame-retardant protection tube prevents the fuse wire from generating high temperature to ignite other circuits, and the service life of the contactless contactor is greatly prolonged.

2. When changing, the staff will press the insulation board to press to the outside simultaneously, then go into two insulation type shell fragments that the homonymy corresponds with two conductive head card simultaneously, the spring that the atress was contract this moment receives the restriction of fixed plate to carry out the centre gripping through the insulation board to conductive head, the whole that fuse and fire-retardant protection tube are constituteed, avoided taking place the condition of rocking when using, ensure that overcurrent overload protection device is effective reliable, make the staff can be more convenient when changing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a spacing unit according to the present invention;

fig. 3 is a schematic structural diagram of an overload protection unit according to the present invention.

In the figure: the device comprises a shell 1, a bidirectional thyristor 2, an electronic trigger 3, a partition plate 4, a connecting column 5, an overload protection unit 6, a conductive seat 61, an insulating elastic sheet 62, a conductive head 63, a fuse wire 64, a flame-retardant protective tube 65, a limiting unit 7, a fixing plate 71, a spring 72, an insulating plate 73, an arc-shaped conductive contact plate 8, a protective plate 9 and a mounting hole 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present embodiment provides a technical solution: a contactless contactor with overcurrent and overload protection device comprises a shell 1 and an overload protection unit 6;

the shell 1: the shell 1 provides an installation supporting place for the accessory mechanism units, the middle part of the bottom wall surface of the inner cavity of the shell is provided with a bidirectional thyristor 2, the bidirectional thyristor 2 plays a role in conducting and blocking, the rear end of the bottom wall surface of the inner cavity of the shell 1 is provided with an electronic trigger 3, the electronic trigger 3 plays a role in contacting the bidirectional thyristor 2, the middle part of the inner cavity of the shell 1 is provided with a partition plate 4, the partition plate 4 plays a role in protecting other circuits, connecting columns 5 are arranged on the left side and the right side of the upper surface of the shell 1, firstly, a worker electrically connects the output end of an external cable with the input end of the connecting column 5 on the right side, then, the input end of the external cable is electrically connected with the output end of the connecting column 5 on the left side, the connecting column 5 plays a role in electrically connected with the external cable, a protection plate 9 is inserted into an opening on the upper surface of the shell 1 through a jack, and the effect of safety protection is met;

overload protection unit 6: the overload protection device comprises conductive seats 61, insulating elastic sheets 62, conductive heads 63 and fuse wires 64, wherein the conductive seats 61 are transversely and symmetrically arranged on the upper surface of the isolation plate 4, the insulating elastic sheets 62 which are longitudinally and symmetrically distributed are arranged on the upper surface of the conductive seats 61, the conductive heads 63 are clamped between two longitudinally adjacent insulating elastic sheets 62, the conductive heads 63 are respectively connected with the conductive seats 61 corresponding to the same side, the two conductive heads 63 are connected through the fuse wires 64, the overload protection unit 6 further comprises a flame-retardant protection tube 65, the flame-retardant protection tube 65 is arranged between the two conductive heads 63, the fuse wires 64 are positioned inside the flame-retardant protection tube 65, and when the current is overloaded too much, the fuse wires 64 are fused by the high temperature generated by the current, thereby protecting the contactless contactor, and the flame-retardant protection tube 65 prevents the fuse wire 64 from generating high temperature to ignite other circuits, thereby greatly prolonging the service life of the fuse wire 64;

wherein: the input of electronic trigger 3 passes through the wire and is connected with 5 output electricity of spliced pole on right side, the input of bidirectional thyristor 2 is connected to the output electricity of electronic trigger 3, bidirectional thyristor 2's output passes through the wire and is connected with the electrically conductive seat 61 input electricity on right side, the electrically conductive seat 61 output on right side is connected with left electrically conductive seat 61 input electricity, left electrically conductive seat 61 output passes through the wire and is connected with 5 input electricity on left spliced pole, play the effect of transmission electric current.

Wherein: the device also comprises a limiting unit 7, the limiting unit 7 is respectively arranged on the outer side surfaces of the two conductive seats 61, the limiting unit 7 is respectively abutted against the outer end heads of the conductive heads 63, the limiting unit 7 comprises a fixing plate 71, the fixing plate 71 is respectively arranged on the outer side surfaces of the two conductive seats 61, the limiting unit 7 also comprises a spring 72 and an insulating plate 73, the spring 72 is respectively arranged on the inner side surface of the fixing plate 71, the inner end heads of the spring 72 are respectively provided with an insulating plate 73, the insulating plate 73 is respectively abutted against the outer end heads of the two conductive heads 63, when in replacement, a worker simultaneously presses the insulating plate 73 outwards, then simultaneously clamps the two conductive heads 63 between the two insulating type elastic sheets 62 corresponding to the same side, at the moment, the spring 72 which is stressed and contracted is limited by the fixing plate 71, and clamps the whole body consisting of the conductive heads 63, the fuse wire 64 and the flame-retardant protection tube 65 through the insulating plate 73, the situation of shaking in use is avoided, the overcurrent and overload protection device is ensured to be effective and reliable, and the replacement of the overcurrent and overload protection device by workers is more convenient.

Wherein: the upper surface of conductive seat 61 all is equipped with arc conductive contact 8, arc conductive contact 8 respectively with the extrados in close contact with of conducting head 63, can be more stable when arc conductive contact 8 sets up to make conductive seat 61 electrically conductive with conducting head 63.

Wherein: the mounting holes 10 that the lower surface four corners of shell 1 was equipped with the symmetric distribution, and the staff of then being convenient for of mounting hole 10 installs.

The working principle of the contactless contactor with the overcurrent and overload protection device provided by the utility model is as follows: firstly, the output end of an external cable is electrically connected with the input end of the connecting column 5 on the right side by a worker, then the input end of the external cable is electrically connected with the output end of the connecting column 5 on the left side, when the bidirectional controllable silicon 2 is required to be used, the worker only needs to control the bidirectional controllable silicon 2 through the electronic trigger 3, so that the bidirectional controllable silicon 2 is in a power-on state, the external current can be transmitted through the bidirectional controllable silicon 2, the current is transmitted through the connecting column 5, the conducting seat 61, the conducting head 63 and the fuse wire 64, when the current is overlarge and overloaded, the fuse wire 64 can be fused by the high temperature generated by the current, the non-contact contactor is protected, the flame-retardant protection tube 65 avoids the high temperature generated by the fuse wire 64 from igniting other circuits, the service life of the fuse wire 64 is greatly prolonged, and after the worker only needs to conduct the power off, the taking-out head 63, the fuse wire, The whole that fuse 64 and fire-retardant protection tube 65 are constituteed and change newly, the staff will press insulation board 73 to press to the outside simultaneously when changing, then go into two conductive head 63 simultaneously between two insulation type shell fragments 62 that the homonymy corresponds, the spring 72 of atress shrink receives the restriction of fixed plate 71 this moment, and to conductive head 63 through insulation board 73, the whole of fuse 64 and fire-retardant protection tube 65 constitution carries out the centre gripping, the condition of rocking has been avoided taking place when using, it is effective reliable to ensure overcurrent overload protection device, make the staff can be more convenient when changing, setting up of arc conductive contact 8 makes conductive seat 61 and conductive head 63 electrically conductive time can be more stable, the staff of being convenient for then installs mounting hole 10.

It should be noted that the triac 2 and the electronic trigger 3 disclosed in the above embodiments can be freely configured according to practical application scenarios, the triac 2 can be selected from the triac with model TT500N14KOF, and the electronic trigger 3 can be selected from the electronic trigger with model AI NP-01C.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a contactless contactor with overcurrent overload protection device which characterized in that: comprises a shell (1) and an overload protection unit (6);

housing (1): the middle part of the bottom wall surface of an inner cavity of the shell is provided with a bidirectional thyristor (2), the rear end of the bottom wall surface of the inner cavity of the shell (1) is provided with an electronic trigger (3), the middle part of the inner cavity of the shell (1) is provided with a partition plate (4), the left side and the right side of the upper surface of the shell (1) are respectively provided with a connecting column (5), and an opening part of the upper surface of the shell (1) is spliced with a protection plate (9) through a jack;

overload protection unit (6): the insulating type elastic pieces (62) are longitudinally and symmetrically distributed on the upper surface of the conductive seat (61), the conductive heads (63) are clamped between two longitudinally adjacent insulating type elastic pieces (62), the conductive heads (63) are respectively connected with the conductive seats (61) corresponding to the same side, and the two conductive heads (63) are connected through the fuse (64);

wherein: the input of electronic trigger (3) passes through the wire and is connected with spliced pole (5) output electricity on right side, the input of bidirectional thyristor (2) is connected to the output electricity of electronic trigger (3), the output of bidirectional thyristor (2) passes through the wire and is connected with electrically conductive seat (61) input electricity on right side, electrically conductive seat (61) output on right side is connected with left electrically conductive seat (61) input electricity, left electrically conductive seat (61) output passes through the wire and is connected with left spliced pole (5) input electricity.

2. The contactless contactor with overcurrent and overload protection device according to claim 1, wherein: the overload protection unit (6) further comprises a flame-retardant protection tube (65), the flame-retardant protection tube (65) is arranged between the two conductive heads (63), and the fuse wire (64) is located inside the flame-retardant protection tube (65).

3. The contactless contactor with overcurrent and overload protection device according to claim 1, wherein: the conductive socket is characterized by further comprising a limiting unit (7), wherein the limiting unit (7) is arranged on the outer side surfaces of the two conductive seats (61) respectively, and the limiting unit (7) is abutted to the outer end heads of the conductive heads (63) respectively.

4. A contactless contactor with overcurrent and overload protection device according to claim 3, characterized in that: the limiting unit (7) comprises a fixing plate (71), and the fixing plate (71) is arranged on the outer side surfaces of the two conductive seats (61) respectively.

5. The contactless contactor with overcurrent and overload protection device according to claim 4, wherein: spacing unit (7) still include spring (72) and insulation board (73), spring (72) set up respectively with fixed plate (71) medial surface, the inboard end of spring (72) all is equipped with insulation board (73), insulation board (73) are contradicted with the outside end of two conductive head (63) respectively.

6. The contactless contactor with overcurrent and overload protection device according to claim 1, wherein: the upper surface of the conductive seat (61) is provided with arc-shaped conductive contacts (8), and the arc-shaped conductive contacts (8) are respectively in close contact with the outer arc surface of the conductive head (63).

7. The contactless contactor with overcurrent and overload protection device according to claim 1, wherein: and four corners of the lower surface of the shell (1) are provided with symmetrically distributed mounting holes (10).