CN201655678U - Alternating current contactor with mechanical short-circuit self-locking function - Google Patents
Alternating current contactor with mechanical short-circuit self-locking function Download PDFInfo
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- CN201655678U CN201655678U CN201020129094XU CN201020129094U CN201655678U CN 201655678 U CN201655678 U CN 201655678U CN 201020129094X U CN201020129094X U CN 201020129094XU CN 201020129094 U CN201020129094 U CN 201020129094U CN 201655678 U CN201655678 U CN 201655678U
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- locking
- contactor
- short circuit
- rotation section
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Abstract
The utility model relates to an alternating current contactor with a mechanical short-circuit self-locking function, which comprises an alternating current contactor body, wherein the alternating current contactor body comprises a shell, and a mechanical short-circuit self-locking unit is arranged inside the shell; the mechanical short-circuit self-locking unit comprises a short-circuit detection triggering mechanism and a self-locking action mechanism, wherein a trigger action is generated by the short-circuit detection triggering mechanism when a short-circuit fault occurs; and a self-locking action is generated by the self-locking action mechanism after the trigger action is received, so that the alternating current contactor can not automatically reset to work after the short-circuit fault is released.
Description
Technical field
The utility model relates to a kind of A.C. contactor with defencive function, particularly be a kind of A.C. contactor with mechanical short circuit self-locking function.
Background technology
As everyone knows, in existing control appliance, A.C. contactor extensively is used in cut-offfing of power circuit and control field as a kind of important device.Usually it is to utilize main contact to open and close circuit, carries out control command with auxiliary contact.Main contact generally has only normal opened contact, and auxiliary contact often has two pairs of contacts with Chang Kai and normally closed function, and small-sized contactor also often cooperates main circuit to use as auxiliary relay.
The contact of A.C. contactor is made by silver alloy, has good electrical conductivity and high temperature resistant ablative.
In this patent, we are referred to as the A.C. contactor body for the structure that can realize basic A.C. contactor function in the prior art.
In the practical work process of reality; when work; described A.C. contactor can be realized the action of opening circuit under the instruction of control appliance; when being short-circuited; the action of thermal relay protection is untimely; cause contactor in time not disconnect or Electronic Protection equipment when not possessing the self-lock protection function of short trouble; the A.C. contactor body can be carried out the instruction adhesive of control appliance usually; cause device damage or breaking out of fire; and such A.C. contactor body accident that is short-circuited produces the action of opening circuit; only seen the result who opens circuit to those skilled in the art, but and do not know the reason that opens circuit also can cause puzzlement to the maintenance personal for this reason.
Based on above-mentioned defective, the utility model creator is through research and practice have obtained this creation finally for a long time.
The utility model content
The purpose of this utility model is to provide a kind of A.C. contactor with mechanical short circuit self-locking function, in order to overcome above-mentioned defective.
For achieving the above object, the technical solution adopted in the utility model is, a kind of A.C. contactor with mechanical short circuit self-locking function is provided, and it comprises: an A.C. contactor body,
Described A.C. contactor body comprises in the housing that described enclosure interior is provided with a mechanical short circuit from lock unit;
Described mechanical short circuit self-locking unit comprises:
One short-circuit detecting trigger mechanism, it produces a trigger action when being short-circuited fault;
One short circuit detection triggering mechanism, it receives and produces a self-locking action behind the described trigger action, makes the work that can't automatically reset after short trouble is removed of described A.C. contactor.
Preferable, described A.C. contactor body also comprises:
One electromagnetic motion unit,
Many group break-make structures, every group of corresponding circuit of break-make structure wherein, it comprises: two static contacts and a movable contact spring, wherein, described two static contacts are connected with outlet metallic conduction sheet with an inlet wire metallic conduction sheet respectively;
Described movable contact spring, it is corresponding with described two static contacts, and is connected with the electromagnetic motion unit, and under "on" position, described electromagnetic motion unit drives the closure that realizes the place circuit that contacts of described movable contact spring and described two static contacts.
Wherein, described electromagnetic motion unit, it comprises: an electromagnet, a back-moving spring, a moving iron core and a control switch, wherein,
Described moving iron core is connected with described movable contact spring;
Described control switch is a normally closed switch, and itself and described magnet spool and phase line circuit form the closed-loop path;
When described back-moving spring loses magnetism at described electromagnet, described moving iron core is resetted, and then described movable contact spring is separated with static contact.
Wherein, described short-circuit detecting trigger mechanism comprises:
One first rotation section, it is set on one first rotation axis, wherein, described first rotation section comprises: one first pushes a bar and a short circuit frizzen, described short circuit frizzen its trigger end at least is that magnetic conductive material is made, and described trigger end is positioned at the described inlet wire metallic conduction sheet or the outlet metallic conduction sheet lower end of described A.C. contactor body;
One first reset portion, it is connected with described first rotation section, with so that described first rotation section reset.
Wherein, described short circuit detection triggering mechanism comprises:
One self-locking reset portion, it is corresponding with a hole that is arranged on the described case top lid, and when being short-circuited, its top is stretched out by described hole;
One second rotation section, it is set on one second rotation axis, and described second rotation section comprises: one second pushes that bar, the 3rd pushes bar and a self-locking compresses bar, wherein,
Described second pushes bar and described first pushes bar and leans;
The described the 3rd pushes bar and described self-locking reset portion forms spacing;
It is corresponding with described control switch that described self-locking compresses bar, and by the rotation of described second rotation section described control switch is realized push action;
One second reset portion, it is connected with described second rotation section, with so that described second rotation section reset.
Wherein, described self-locking reset portion comprises:
One support body;
Described support body is provided with a recess, and the hook end that described recess and the described the 3rd pushes bar forms locking relation;
One the 3rd reset portion, it is connected with described support body, in order to realize resetting of described support body.
Preferable, described first reset portion, second reset portion and described the 3rd reset portion are back-moving spring.
The beneficial effects of the utility model are compared with the prior art, can produce self-locking action when being short-circuited fault, could realize release thereby have only by artificial mode, and the safety of the electricity consumption that finally reaches has indicative function to short trouble simultaneously.
Description of drawings
Figure 1A is the structure chart after A.C. contactor embodiment one loam cake that the utlity model has mechanical short circuit self-locking function is opened;
Figure 1B is the agent structure decomposition chart that the utlity model has the A.C. contactor embodiment one of mechanical short circuit self-locking function;
Fig. 2 A is the structure chart after A.C. contactor embodiment two loam cakes that the utlity model has mechanical short circuit self-locking function are opened;
Fig. 2 B is the agent structure decomposition chart that the utlity model has the A.C. contactor embodiment two of mechanical short circuit self-locking function;
Fig. 3 A is that the A.C. contactor that the utlity model has mechanical short circuit self-locking function is under the off-state situation cutaway view when short-circuit detecting trigger mechanism is not worked;
Fig. 3 B is that the A.C. contactor that the utlity model has mechanical short circuit self-locking function is under the off-state situation cutaway view when short circuit detection triggering mechanism is not worked;
Fig. 3 C is that the A.C. contactor that the utlity model has mechanical short circuit self-locking function is under the conducting state situation cutaway view when short-circuit detecting trigger mechanism is not worked;
Fig. 3 D is that the A.C. contactor that the utlity model has mechanical short circuit self-locking function is short-circuited under the abnormal conditions short-circuit detecting trigger mechanism operate condition cutaway view;
Fig. 3 E is that the A.C. contactor that the utlity model has mechanical short circuit self-locking function is short-circuited under the abnormal conditions short circuit detection triggering mechanism operate condition cutaway view;
Fig. 4 is the A.C. contactor electrical block diagram that the utlity model has mechanical short circuit self-locking function.
Embodiment
Below in conjunction with accompanying drawing, be described in more detail with other technical characterictic and advantage the utility model is above-mentioned.
See also shown in Figure 1A and Figure 1B, it is respectively the structure chart after A.C. contactor embodiment one loam cake that the utlity model has mechanical short circuit self-locking function is opened; And agent structure decomposition chart; Described A.C. contactor with mechanical short circuit self-locking function comprises: an A.C. contactor body, described A.C. contactor body comprises a housing, be provided with a mechanical short circuit in it from lock unit, wherein, described A.C. contactor body is exactly in order to realize the structure of the on-off function that A.C. contactor is basic.
Main idea of the present utility model is, by the improvement to existing A.C. contactor, makes it reach new safety standard.Described housing comprises loam cake 10 and base 11, wherein comprises in described housing:
One electromagnetic motion unit is in order to produce electromagnetism action, described electromagnetic motion unit in the electric power conducting state, it comprises: an electromagnet 24, one back-moving spring, 241, one a moving iron core 242 (Fig. 3 A) and a control switch 34, wherein, described moving iron core 242 is connected with described movable contact spring 21; Described control switch 34 is a normally closed switch, and the coil of itself and described electromagnet 24 and phase line circuit form the closed-loop path (not shown); Promptly as long as have electric current to flow through on the circuit at A.C. contactor body place, described electromagnet 24 just can draw down described moving iron core 242, thereby makes described back-moving spring 241 be in compressive state.When described back-moving spring 241 loses magnetism at described electromagnet 24, described moving iron core 242 is upwards resetted.
Many group break-make structures, every group of corresponding circuit (phase line) of described break-make structure wherein, each described on off mechanism comprises: two static contacts and a movable contact spring 21, wherein, described two static contacts are connected with outlet metallic conduction sheet (opposite side) with an inlet wire metallic conduction sheet 23 respectively; Wherein, described inlet wire metallic conduction sheet 23 is connected with phase line respectively with outlet metallic conduction sheet; Also be provided with arc-extinguish chamber 22, in order to the arc light that prevents in conducting or produce when disconnecting to the element on the circuit or contact point produces infringement.
Described movable contact spring 21, it is corresponding with described two static contacts, and is connected with moving iron core 242 in the described electromagnetic motion unit, under "on" position, described moving iron core 242 drives described movable contact spring 21 and contacts with described two static contacts, thereby realizes the closure of place circuit.
Described mechanical short circuit self-locking unit comprises: a short-circuit detecting trigger mechanism and a short circuit detection triggering mechanism, wherein, described short-circuit detecting trigger mechanism produces a trigger action when being short-circuited fault, here the basis of Jian Ceing is to utilize the high-intensity magnetic field that produces when being short-circuited fault, and described short-circuit detecting trigger mechanism comprises:
One first rotation section 36, it is set on one first rotation axis 38, and this first rotation axis can be arranged on described loam cake 10 and the base 11; Wherein, described first rotation section 36 comprises: one first pushes a bar and a short circuit frizzen, described short circuit frizzen its trigger end at least is that magnetic conductive material is made, and described trigger end is positioned at described inlet wire metallic conduction sheet 23 (also can be outlet metallic conduction sheet) lower end (consulting Fig. 3 A-Fig. 3 E);
One first reset portion 37, it is connected with described first rotation section 36, with so that described first rotation section 36 reset, first reset portion 37 described here can be selected back-moving spring or elastic sheet metal for use, the one end is connected with short circuit frizzen on described first rotation section, and the other end hangs on the housing of described A.C. contactor body.
Described short circuit detection triggering mechanism is because of described trigger action, and then interlock produces a self-locking action, makes the work that can't automatically reset after short trouble is removed of described A.C. contactor body.Described short circuit detection triggering mechanism comprises:
One self-locking reset portion, it is with one to be arranged at the hole 101 on described case top lid top corresponding, and when being short-circuited, its top is stretched out by described hole 101; Described self-locking reset portion comprises:
One support body 31; Described support body 31 is provided with a recess;
One the 3rd reset portion 32, it is connected with described support body 31, in order to realize resetting of described support body 31.Wherein a kind of execution mode is to be provided with one to shelve the hole in described support body 31, described the 3rd reset portion 32 places in the described hole, be provided with a location-plate 311 in the hole described shelving, described the 3rd reset portion 32 1 ends withstand on the described location-plate 311, and the other end leans and shelve the upper end, hole in described support body 31;
One second rotation section 33, it is set on one second rotation axis 331, and described second rotation section 33 comprises: one second pushes that bar, the 3rd pushes bar and a self-locking compresses bar, and wherein, described second pushes bar and described first pushes bar and leans; The described the 3rd a hook end and the recess on the described support body 31 that pushes bar forms locking relation, thereby forms spacing relation with described self-locking reset portion; It is corresponding with described control switch 34 that described self-locking compresses bar, and by the rotation of described second rotation section 33 described control switch 34 is produced push action, thereby make described control switch 34 have normally off to be converted to off-state;
One second reset portion 35 (39), present embodiment is two, it is connected with described second rotation section 33, with so that described second rotation section 33 reset, second reset portion 35 (39) described here and the 3rd above-mentioned reset portion 32 can be selected back-moving spring or elastic sheet metal for use, 33 self-locking of one end and described second rotation section compresses bar and is connected, and the other end hangs on the housing of A.C. contactor body.
See also shown in Fig. 2 A and Fig. 2 B, it is respectively structure chart and agent structure decomposition chart after A.C. contactor embodiment two loam cakes that the utlity model has mechanical short circuit self-locking function are opened; Be with the difference of the foregoing description one, here all be provided with a described short circuit detection triggering mechanism on the described break-make structure of each, therefore three groups of short circuit detection triggering mechanism are arranged as we can see from the figure, promptly one second rotation axis 331 is provided with three second rotation sections 33, and with three corresponding described self-locking reset portion of described second rotation section 33, therefore when being short-circuited fault, having three described support bodys 31 and stretch out from described going up the upper part of the cover hole 101.
Below in conjunction with Fig. 3 A-Fig. 3 E, the operation principle and the process that the utlity model has the A.C. contactor of mechanical short circuit self-locking function are set forth.
See also shown in Fig. 3 A-Fig. 3 C, it is respectively the A.C. contactor that the utlity model has mechanical short circuit self-locking function and is under the off-state situation, when the short-circuit detecting trigger mechanism is not worked, and the cutaway view of state when short circuit detection triggering mechanism is not worked; And be under the conducting state situation cutaway view of state when the short-circuit detecting trigger mechanism is not worked; This moment, the short circuit frizzen of described first rotation section 36 articulated mutually with described first reset portion 37, and the self-locking of described second rotation section 33 (adopting split to constitute here) compresses the described control switch 34 of pole pair and do not produce the extruding action; Described first pushes bar does not promote described second and pushes bar, and this moment, described A.C. contactor body was in the state of operate as normal.
See also shown in Fig. 3 D-Fig. 3 E, it is respectively the A.C. contactor that the utlity model has mechanical short circuit self-locking function and is short-circuited under the abnormal conditions, the cutaway view of short-circuit detecting trigger mechanism state; And the cutaway view of short circuit detection triggering mechanism state; Because short trouble takes place, produce high-intensity magnetic field around the described inlet wire metallic conduction sheet 23, the trigger end of the short circuit frizzen of described first rotation section 36 is attracted, described first rotation section 36 is rotated, described first pushes bar promotes described second and pushes bar, thereby described second rotation section 33 is rotated, and then the self-locking that makes described second rotation section 33 compresses the described control switch 34 generation extruding actions of pole pair, the described the 3rd a hook end that pushes bar breaks away from from the recess on the described support body 31 simultaneously, therefore under the effect of described the 3rd reset portion 32, the support body 31 of described self-locking reset portion ejects from the hole portion 101 on the described housing.
In conjunction with shown in Figure 4, it is the A.C. contactor electrical block diagram that the utlity model has mechanical short circuit self-locking function; Because described control switch 34 is pressed, this moment, K was opened, this is that electromagnet CG does not have electric current to flow through, under the effect of described back-moving spring 241, described moving iron core 242 drives described movable contact spring 21 to be separated with described static contact, and then short trouble disappears, high-intensity magnetic field also disappears thereupon, cause the short circuit frizzen of described first rotation section 36 under the pulling of first reset portion 37, to rotate, described second rotation section 33 desire under the pulling of described second reset portion 35 is rotated, but lean mutually because support body 31 lower ends and the described the 3rd of self-locking this moment reset portion push a hook end of bar, described second rotation section 33 can't be rotated; The self-locking of described like this second rotation section 33 compresses bar and still described control switch 34 is produced the extruding action, thereby described A.C. contactor body can't reset.
In this case, have only manually and be about to stretch out the self-locking reset portion support body 31 of described housing upper hole 101 earlier by going back, described second rotation section 33 could realize rotating, the described the 3rd hook end that pushes bar could be again with described support body 31 on recess form locking relation, thereby the self-locking of described second rotation section 33 compresses bar and no longer described control switch 34 is produced the extruding action, can realize that just described A.C. contactor body resets.
The above only is preferred embodiment of the present utility model, only is illustrative for the utility model, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes to it in the spirit and scope that the utility model claim is limited, revise, even equivalence, but all will fall in the protection range of the present utility model.
Claims (7)
1. A.C. contactor with mechanical short circuit self-locking function, it comprises: an A.C. contactor body, it is characterized in that,
Described A.C. contactor body comprises: a housing, described enclosure interior are provided with a mechanical short circuit from lock unit;
Described mechanical short circuit self-locking unit comprises:
One short-circuit detecting trigger mechanism, it produces a trigger action when being short-circuited fault;
One short circuit detection triggering mechanism, it receives and produces a self-locking action behind the described trigger action, makes the work that can't automatically reset after short trouble is removed of described A.C. contactor.
2. the A.C. contactor with mechanical short circuit self-locking function according to claim 1 is characterized in that, described A.C. contactor body also comprises:
One electromagnetic motion unit;
Many group break-make structures, every group of corresponding circuit of described break-make structure, it comprises:
Two static contacts and a movable contact spring, wherein, described two static contacts are connected with outlet metallic conduction sheet with an inlet wire metallic conduction sheet respectively;
Described movable contact spring, it is corresponding with described two static contacts, and is connected with the electromagnetic motion unit, and under "on" position, described electromagnetic motion unit drives described movable contact spring and contacts with described two static contacts, thereby realizes the closure of place circuit.
3. the A.C. contactor with mechanical short circuit self-locking function according to claim 2 is characterized in that, described electromagnetic motion unit, and it comprises: an electromagnet, a back-moving spring, a moving iron core and a control switch, wherein,
Described moving iron core is connected with described movable contact spring;
Described control switch is a normally closed switch, and itself and described magnet spool and phase line circuit form the closed-loop path;
When described back-moving spring loses magnetism at described electromagnet, described moving iron core is resetted, and then described movable contact spring is separated with static contact.
4. the A.C. contactor with mechanical short circuit self-locking function according to claim 3 is characterized in that, described short-circuit detecting trigger mechanism comprises:
One first rotation section, it is set on one first rotation axis, wherein, described first rotation section comprises: one first pushes a bar and a short circuit frizzen, described short circuit frizzen its trigger end at least is that magnetic conductive material is made, and described trigger end is positioned at described inlet wire metallic conduction sheet or outlet metallic conduction sheet lower end;
One first reset portion, it is connected with described first rotation section, with so that described first rotation section reset.
5. the A.C. contactor with mechanical short circuit self-locking function according to claim 4 is characterized in that, described short circuit detection triggering mechanism comprises:
One self-locking reset portion, it is with one to be arranged at the hole on described case top lid top corresponding, and when being short-circuited, described self-locking reset portion top is stretched out by described hole;
One second rotation section, it is set on one second rotation axis, and described second rotation section comprises: one second pushes that bar, the 3rd pushes bar and a self-locking compresses bar, wherein,
Described second pushes bar and described first pushes bar and leans;
The described the 3rd pushes bar and described self-locking reset portion forms spacing relation;
It is corresponding with described control switch that described self-locking compresses bar, and the rotation by described second rotation section, thereby described control switch is produced push action;
One second reset portion, it is connected with described second rotation section, resets in order to realize described second rotation section.
6. the A.C. contactor with mechanical short circuit self-locking function according to claim 5 is characterized in that, described self-locking reset portion comprises:
One support body;
Described support body is provided with a recess, and the hook end that described recess and the described the 3rd pushes bar forms locking relation;
One the 3rd reset portion, it is connected with described support body, in order to realize resetting of described support body.
7. the A.C. contactor with mechanical short circuit self-locking function according to claim 6 is characterized in that, described first reset portion, second reset portion and described the 3rd reset portion all are back-moving spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020129094XU CN201655678U (en) | 2010-02-10 | 2010-02-10 | Alternating current contactor with mechanical short-circuit self-locking function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201020129094XU CN201655678U (en) | 2010-02-10 | 2010-02-10 | Alternating current contactor with mechanical short-circuit self-locking function |
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| CN201655678U true CN201655678U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020129094XU Expired - Lifetime CN201655678U (en) | 2010-02-10 | 2010-02-10 | Alternating current contactor with mechanical short-circuit self-locking function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789332A (en) * | 2010-02-10 | 2010-07-28 | 湖北盛佳电器设备有限公司 | Alternating current contactor with mechanical short circuit self-locking function |
| CN111710561A (en) * | 2020-05-26 | 2020-09-25 | 贵州天义电器有限责任公司 | Self-locking contactor and operation method |
-
2010
- 2010-02-10 CN CN201020129094XU patent/CN201655678U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789332A (en) * | 2010-02-10 | 2010-07-28 | 湖北盛佳电器设备有限公司 | Alternating current contactor with mechanical short circuit self-locking function |
| WO2011097789A1 (en) * | 2010-02-10 | 2011-08-18 | 湖北盛佳电器设备有限公司 | Alternating current contactor with mechanical short circuit self-locking function |
| CN101789332B (en) * | 2010-02-10 | 2012-10-31 | 湖北盛佳电器设备有限公司 | Alternating current contactor with mechanical short circuit self-locking function |
| CN111710561A (en) * | 2020-05-26 | 2020-09-25 | 贵州天义电器有限责任公司 | Self-locking contactor and operation method |
| CN111710561B (en) * | 2020-05-26 | 2022-06-07 | 贵州天义电器有限责任公司 | Self-locking contactor and operation method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101124 Effective date of abandoning: 20130227 |
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| RGAV | Abandon patent right to avoid regrant |