CN2264972Y - Built-in low-voltage breaker - Google Patents

Abstract

The utility model relates to a built-in low-voltage breaker, comprising an insulating casing, a moving contact and a fixed contact arranged in the insulating casing, an operating mechanism and a trip device; the utility model is especially provided with an inserting panel, a power supply terminal of an inserting and pulling structure, and a rotating compression reed the inner part of which is provided with a micro switch and using an operating mechanism to interlock and switch the on-off state of the micro switch. So, the utility model has the advantages of reliable operation and convenient installation, maintenance and use.

Description

The flush type low-voltage circuit breaker

The utility model relates to a kind of improvement of low-voltage circuit breaker structure, specifically, is a kind of architecture advances to Chinese utility model patent 94227603.5 " a kind of low-voltage circuit breaker ".

The circuit breaker that is used for low-voltage electrical apparatus generally all manufactures and designs by pre-provisioning request, and limitation is used within the specific limits, and the malleable function more can not make up new function with the need, and this just causes the trouble of using on going up and keeping in repair.Therefore, China's utility model patent " a kind of low-voltage circuit breaker " (patent No. 94227603.5, the applying date 940125) disclose a kind of " can be on demand with the module of different function units; be combined into the technical scheme of the low-voltage circuit breaker of different technologies requirement easily, this low-voltage circuit breaker comprises insulation crust, operating mechanism, contact and trip gear.On insulation crust, preset the preformed groove of the preformed hole that multipole linkage is installed, the rectangular groove of reservation that auxiliary contact or insulation shrouding are installed, installation voltage drive coil inserted sheet, the installation groove and the venthole of installation square nut; Operating mechanism adopts overall structure form, embed and be bearing in the groove of insulation crust with support by a pivot pin and another pivot pin, its handle, trip gear, moving contact, oil damper are all rack-mount, the installation of oil damper is to adopt the circlip with helical teeth to fix, handle and torsion spring are fixed on the support by pivot pin, be connected with tripping by pivot pin, whole operation mechanism moves by certain track and makes moving contact and fixed contact do to connect and the disjunction state again; Trip gear is made up of tripping, snap close and joint cover, and snap close is made up of finger plate, pin, coil and rotating shaft groove, the center line of groove plane and snap close intersect 7 °+2 ° 30 '; And coil winding is on coil rack; Iron core in oil damper is inhaled the moving armature that has balance element by the coil electricity excitation, and snap close is rotated, and circuit breaker enters the disjunction state; Be installed in the auxiliary contact in the rectangular groove of reservation of insulation crust, comprise slide block, sensitive switch and installed part, and slide block and sensitive switch be installed on the installed part, sensitive switch has long 7 millimeters inserted sheet.

Obviously, this patent has tangible technological progress, by the low-voltage circuit breaker that its scheme is made, summarizes and gets up to have following advantage:

1, adopt modular functional unit device, simple in structure, adaptability is strong, is convenient to be combined into by the difference requirement product of difference in functionality;

2, be elementary cell with the unipolar low-voltage circuit breaker, on operating mechanism, load onto STATEMENT OF FEDERALLY SPONSORED, can be assembled into bipolar easily or three utmost point functional products;

3, integral operation mechanism can be by the rated current and the characteristic assembling of regulation in advance, and verification adjusts, and can adapt to singlely respectively, and small lot and producing in enormous quantities needs;

4, to change rated current and characteristic, as long as circlip is pulled down transposing coil and oil damper refitting;

5, circuit breaker working condition can reflect by the switching of an auxiliary contact;

6, if will realize far distance controlled, only need to load onto inserted sheet on the double-layer coil lead-in wire at the preformed groove on the insulation crust, can realize control by distant place control button by inserted sheet;

7, change operating parts, can realize that by stirring operational transformation be the pressing operation;

8, if in the Circuits System different voltage and currents more than two kinds are arranged, can respectively the single-pole circuit breaker with this functional unit be fitted together and be linked, can realize single action or interlock.

Yet, producing and using sense still that weak point is arranged: 1, auxiliary contact is installed in and reserves on the square groove, by its slide block (driven by operating mechanism) compressing of sensitive switch is reflected the working condition of circuit breaker with discharging, but find that in use slide block is unreliable to the switching of sensitive switch; When 2, keeping in repair, the dress of shell is driven sense inconvenience still; 3, binding post adopts spiro connection structure, also has inconvenient part in the use.

The purpose of this utility model is the shortcoming that overcomes prior art, a kind of reliable operation is provided, is convenient to install, the low-voltage circuit breaker of convenient maintenance.

Technical solution of the present utility model is:

Based on Chinese utility model patent " a kind of low-voltage circuit breaker " (CN 94227603.5), it is done following improvement:

1, panel changes embedded structure into;

2, power supply terminal changes the plug-type structure into;

3, adopt rotary type compressing reed to replace slide block, promptly remove to drive a rotary type reed and switch sensitive switch by operating mechanism;

4, sensitive switch is placed in the insulation crust, i.e. circuit breaker type structure in aggregates.

As mentioned above; the utility model comprises insulation crust and places its two interior power supply terminals; the dynamic/static contact that becomes electric loop to connect with an one power supply terminal; switch the operating mechanism of this contact and the trip gear of loop protection; particularly have flush type panel, plug-type power supply terminal and sensitive switch to place within the insulation crust, and the rotary type compressing reed of sensitive switch is switched in the interlock of setting operation mechanism.

The utility model has the advantages that: 1,, make operating mechanism switch reliable the interlock of sensitive switch owing to change slide block into rotary type compressing reed; 2, because panel is an embedded structure, it is very convenient that dress is driven; 3, power supply terminal is the plug-type structure, and is easy to use.

Accompanying drawing of the present utility model is as follows:

Fig. 1 is the structural representation of existing device.

Fig. 2 is a structural representation of the present utility model.

Fig. 3 is a panel construction schematic diagram of the present utility model.

Fig. 4 is the structural representation of the utility model plug-in type connection terminal.

Fig. 5 is an insulation crust structural representation of the present utility model.

Among the figure:

1-insulation crust, 2-handle, 3-shaft lock

4-direction board groove, 5-torsion spring 6-square screw

7-pivot pin, 8-arc quenching plate, 9-trip gear

10-fixed contact, 11-moving contact

12,14-power supply terminal, 13-auxiliary contact

15-torsion spring, 16-pivot pin, 17-support

18-damper, 19-back-up ring, 20-coil

21-pivot pin, 22-coil rack, 23-armature

24-tripping, 34-auxiliary contact or sensitive switch inserted sheet

40-concave surface, 41-venthole 42-rectangular preformed hole

50-STATEMENT OF FEDERALLY SPONSORED, 53-push rod, 54-pin

55-coil 56-patch sheet 57-flexible conductor

58-flange, 59-torsion spring

6 '-circular hole 12 ' and 14 '-terminal insert wafer

13 '-the outer sleeve of sensitive switch 12 " and 14 "-binding post

31 '-reed 32 '-the reservation lug

33 '-pivot pin 38 '-preformed groove

39 '-preformed hole 40 '-concave surface

41 '-venthole 42 '-reserve rectangular groove

62 '-panel 63 '-torsion spring

64 '-rivet 65 '-pivot pin

66 '-clamp part 67 '-clamp the part inclined-plane

68 '-panel stomidium 69 '-clamp the part cambered surface

70 '-the user installation plate

Below, we provide better embodiment of the utility model according to Fig. 2～Fig. 4, and cooperate the description to this embodiment, and ins and outs of the present utility model further are provided.

As shown in Figure 2, the utility model comprise insulation crust 1, power end inserted sheet 12 ', load end inserted sheet 14 ', moving contact 11, fixed contact 10, trip gear 9 and be the plug-type structure by monolithic devices operating mechanism, particularly binding post that pivot pin 3,16, support 17, pivot pin 7, tripping 24, handle 2 and torsion spring 5 constitute; Panel is that setting-in structure and sensitive switch are installed in the insulation crust 1, and this sensitive switch is switched by the transmission of rotation compressing reed.

As Fig. 2 and shown in Figure 4, binding post comprises power end inserted sheet 12 ' and outer sleeve 12 " and load end inserted sheet 14 ' and outer sleeve 14 ", their formation composite type connect-disconnect structures.

The setting-in structural panel, as Fig. 2 and Fig. 3 and shown in Figure 5, each plastic insulation shell 1 all has the concave surface 40 that is embossed in the composition surface, concave surface is triangular in shape, when 1 pair on two shells lump together, form a breach, by hole 6 ', with rivet 64 ' with inlay card piece installing 66 ' with the hole 68 at pivot pin 65 ' be assemblied in panel 62 ' two ends ' on, when circuit breaker is installed, at first will the user installation plate 70 of appointment ' on hold installing hole successfully, when circuit breaker when installing hole embeds, clamp part 66 ' cambered surface 69 ' be subjected to thrust, two ends all rotate towards handle 2 directions, after passing through the installing hole of mounting panel, clamp part 66 ' just can torsion spring 63 ' reaction force under rotation in the opposite direction, clamp part 66 ' inclined-plane 67 ' up to this with mounting panel 70 ' till contact, concern owing to clamping panel 62 ' stressed moment this moment, circuit breaker will withdraw from again can not, have only to make to clamp part 66 ' draw close towards the direction of handle 2 again, just might withdraw from installing hole, circuit breaker is taken off with an external force.

Comparison diagram 1 and Fig. 2 as can be known, the utility model is not with existing slide block 31 (pointing out among the figure that it is driven by operating mechanism and switches the on off operating mode of sensitive switch).This straight ejector half structure changes rotary type compressing reed structure into.As shown in Figure 2, this rotary type compressing reed structure system by reservation lug 32 on the insulation crust 1 of reed 31 ' and pivot pin 33 ' be installed in ' on constitute.When moving contact 11 rotated, flange 58 forced reed 31 ' around pivot pin 33 ' rotation, promote sensitive switch 13 ' snapper take action downwards, this moment sensitive switch 13 ' does connection disjunction change action.The working condition signal of its action switching reflection circuit breaker sends control device to by the inserted sheet 34 of sensitive switch.

Claims (4)

1, a kind of flush type low-voltage circuit breaker, comprise insulation crust and place two power supply terminals of its inside, become dynamic and static contact that electric loop connects with power supply terminal wherein, switch the operating mechanism of this dynamic and static contact and the trip gear of loop protection, it is characterized in that having the setting-in structural panel; These two binding posts are the plug-type structure; Sensitive switch places in this insulation crust, and is provided with the rotation compressing reed that this sensitive switch on off operating mode is switched in this operating mechanism interlock.

2, flush type low-voltage circuit breaker according to claim 1 is characterized in that said rotation compressing reed comprises the reed on the reservation lug that is installed in insulation crust and supports the pivot pin that this reed rotates.

3, flush type low-voltage circuit breaker according to claim 1 is characterized in that said connect-disconnect structure binding post comprises the power end inserted sheet that is fixed in the insulation crust and load end inserted sheet and the external sleeve that matches with them respectively.

4, flush type low-voltage circuit breaker according to claim 1 is characterized in that said setting-in structural panel ties up to the part that clamps that there is the pivot pin supporting at its two ends, and this clamps part has one to be subjected to thrust cambered surface and latch ramp.

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