CN212411976U - Interlocking mechanism of miniature circuit breaker - Google Patents

Abstract

The utility model discloses a miniature circuit breaker's interlocking mechanism solves the limitation and the complicated scheduling problem of structure of some scenes of interlocking mechanism. The interlocking mechanism comprises a shell, a first linkage handle, a second linkage handle, a first jump buckle, a second jump buckle, a first tension spring and a second tension spring; the first cam and the second cam are respectively contacted and matched with the first jump buckle and the second jump buckle so as to pull the corresponding first jump buckle and second jump buckle to rotate when the first cam and the second cam rotate, and the first jump buckle and the second jump buckle drive the first driving rod and the second driving rod to act so as to respectively trigger the tripping mechanism of the corresponding circuit breaker to perform tripping action when rotating. When one of them circuit breaker is closed, can make another circuit breaker open brake, can see out from the inner structure, structural design is simple effective, and the maloperation rate is showing and is reducing, small in size, low cost, the practicality is strong.

Description

Interlocking mechanism of miniature circuit breaker

Technical Field

The utility model belongs to the technical field of the circuit breaker accessory and specifically relates to a miniature circuit breaker's interlocking mechanism.

Background

In order to realize the smooth switching of the two-way power supply, an interlocking mechanism is generally installed to realize the smooth switching, so that a fault power supply can be prevented from supplying power to a load, and a qualified power supply can be reliably selected to be put into normal operation, thereby ensuring the uninterrupted power supply. However, when one of the power supplies of the interlocking mechanism on the market is switched off, the other power supply is automatically switched on, and the automatic switching-on function is not suitable for all scenes, and still needs to be manually switched on for the sake of safety, so that the interlocking mechanism in the prior art still has some limitations. In addition, the interlocking mechanism in the prior art has a complex internal structure, so that the interlocking mechanism is low in reliability, high in malfunction rate, too large in size due to various parts, complex to operate and high in cost.

Disclosure of Invention

The utility model aims at: in order to overcome the defects of the prior art, the utility model provides a miniature circuit breaker's interlocking mechanism solves the limitation and the complicated scheduling problem of structure of some scenes of interlocking mechanism.

The technical scheme of the utility model: the interlocking mechanism comprises a shell, a first linkage handle, a second linkage handle, a first jump buckle, a second jump buckle, a first tension spring and a second tension spring; the first linkage handle and the second linkage handle are rotatably arranged on the shell and are in linkage connection with the handles of the first circuit breaker and the second circuit breaker respectively, and the first linkage handle and the second linkage handle are integrally provided with a first cam and a second cam respectively; the first jump buckle and the second jump buckle are respectively and rotatably arranged in the shell, and a first driving lever and a second driving lever which extend into the second circuit breaker and are connected with the tripping mechanism through the first circuit breaker auxiliary hole are respectively arranged in the directions of the second circuit breaker and the first circuit breaker; one ends of the first tension spring and the second tension spring are respectively fixed on the shell, and the other ends of the first tension spring and the second tension spring are respectively connected with the first jump buckle and the second jump buckle; first cam, second cam jump detain, the cooperation of contacting with first jump knot, second jump respectively in order to pull out corresponding first jump knot, second jump knot rotate when first cam, second cam rotate, first jump is detained, second jump is detained and is driven first driving lever, second driving lever action when rotating in order to trigger the tripping device who corresponds the circuit breaker respectively and carry out the tripping action, first extension spring, second extension spring are detained at first jump, second jump and are detained the rotation back production respectively and reply the pulling force in order to reset first jump knot, second jump and detain.

By adopting the technical scheme, when the breaker handle is switched on, the respective linkage handle shifts the corresponding trip buckle to enable the trip buckle to drive the corresponding shift lever to trigger the other breaker to trip, so that the other breaker can be switched off while one breaker is switched on, at most one breaker can be ensured to be in a switched-on state, and manual two-way switching is realized by operating the rotating handle of one breaker; the structure is simple and effective, the misoperation rate is obviously reduced, the operation is more reliable, the number of parts is less, the size is small, the cost is low, and the practicability is high.

The utility model discloses a further setting: first jump is buckled, the second jumps and is buckled and be provided with buffering subassembly respectively, buffering subassembly is including feeler block and torsional spring, first jump is buckled, the second jumps and is buckled and set up flutedly respectively, the feeler block rotates and installs in the recess, torsional spring one end with correspond first jump and detain or the second jumps to be connected, the other end is connected with the feeler block, the feeler block is spacing in the recess and with correspond first cam or the cooperation of contacting of second cam.

Adopt above-mentioned further setting, the cam is too much with jump the knot contact number of times, easily causes two contact surfaces wearing and tearing too fast, and the buffering effect through the torsional spring can slow down wearing and tearing between the two, avoids rigid friction between the two, can also maintain the validity of contact through changing the touch multitouch, changes convenient and fast.

The utility model discloses a further setting again: the first jump buckle and the second jump buckle form a crossed structure.

By adopting the above further arrangement, the thickness of the shell is properly reduced by the crossed structure, and the volume can be further reduced.

The utility model discloses a still further set up: the side of casing is provided with the buckle, the buckle is connected with first circuit breaker or second circuit breaker buckle that corresponds.

By adopting the above further arrangement, the interlocking mechanism and the circuit breaker are more reliably connected, and the circuit breaker is more convenient to disassemble and assemble.

The utility model discloses a still further set up: the first linkage handle and the second linkage handle are respectively provided with an inserted bar, and the inserted bars are inserted into the handles of the corresponding circuit breakers to form linkage.

Adopt above-mentioned still further setting, it is convenient to install, strengthens interlocking mechanism's linkage handle and the synchronism who corresponds the circuit breaker handle.

Drawings

FIG. 1 is a schematic diagram of the internal structure of an embodiment of the present invention;

FIG. 2 is a first schematic structural view of the present invention without a housing;

FIG. 3 is a second schematic structural view of the present invention without the housing;

FIG. 4 is an external view of an embodiment of the present invention;

fig. 5 is a schematic structural view of the present invention installed between the first circuit breaker and the second circuit breaker;

the circuit breaker comprises a first circuit breaker 11, a second circuit breaker 12, a handle 111, an auxiliary hole 112, a shell 2, a first linkage handle 31, a second linkage handle 32, a first trip buckle 41, a second trip buckle 42, a first tension spring 51, a second tension spring 52, a first cam 61, a second cam 62, a first deflector rod 71, a second deflector rod 72, a buffer assembly 8, a contact block 81, a torsion spring 82, a groove 411, a buckle 21 and an insertion rod 311.

Detailed Description

As shown in fig. 1-5, a first circuit breaker 11 and a second circuit breaker 12 are respectively installed on two sides of the interlock mechanism, the first circuit breaker 11 and the second circuit breaker 12 respectively include a handle 111 and a trip mechanism, auxiliary holes 112 are respectively formed on the side surfaces of the first circuit breaker 11 and the second circuit breaker 12, and the trip mechanism can be tripped by inserting the auxiliary holes 112 from the outside. The interlocking mechanism comprises a shell 2, a first linkage handle 31, a second linkage handle 32, a first jump buckle 41, a second jump buckle 42, a first tension spring 51 and a second tension spring 52; the first linkage handle 31 and the second linkage handle 32 are rotatably arranged on the housing 2 and are respectively linked with the handles of the first circuit breaker 11 and the second circuit breaker 12, the first linkage handle 31 and the second linkage handle 32 are respectively provided with a first cam 61 and a second cam 62, the first linkage handle 31 and the first cam 61 are integrally formed, and the second linkage handle 32 and the second cam 62 are integrally formed. The first jump buckle 41 and the second jump buckle 42 are respectively and coaxially and rotatably installed in the shell 2, and the first jump buckle 41 and the second jump buckle 42 are crossed, namely, the first jump buckle and the second jump buckle extend towards the opposite direction and occupy partial space of the opposite direction respectively, but are relatively independent; the first trip buckle 41 is provided with a first driving lever 71 towards the second breaker 12, the first driving lever 71 extends into the auxiliary hole 112 of the second breaker 12 and is connected with the tripping mechanism of the second breaker, the second trip buckle 42 is provided with a second driving lever 72 towards the first breaker 11, and the second driving lever 72 extends into the auxiliary hole 112 of the first breaker 11 and is connected with the tripping mechanism of the first breaker 11. One end of each of the first tension spring 51 and the second tension spring 52 is fixed on the housing 2, and the other end thereof is connected to the first jump buckle 41 and the second jump buckle 42. The first cam 61 and the second cam 62 are respectively in contact fit with the first skip buckle 41 and the second skip buckle 42, when the first cam 61 and the second cam 62 rotate, the corresponding first skip buckle 41 and the corresponding second skip buckle 42 are pulled to slightly rotate, the corresponding first deflector rod 71 and the corresponding second deflector rod 72 are driven to act so as to respectively trigger the tripping mechanism of the corresponding circuit breaker to trip, and the first tension spring 51 and the second tension spring 52 respectively generate restoring tension after the first skip buckle 41 and the second skip buckle 42 rotate so as to reset the first skip buckle 41 and the second skip buckle 42, so that the first cam 61 and the second cam 62 can respectively form contact with the first skip buckle 41 and the second skip buckle 42. Taking the closing action of the handle 111 of the first circuit breaker 11 as an example, the first linkage handle 31 rotates along with the handle, so that the first cam 61 contacts and pulls the first trip buckle 41, the first driving lever 71 acts along with the first trip buckle 41 and triggers the tripping mechanism of the second circuit breaker 12 to trip, and the second circuit breaker 12 is opened; similarly, when the second breaker 12 is closed, the first breaker 11 is opened, and thus, the circuit is switched.

Be provided with buffering subassembly 8 on first jump knot 41, the second jump knot 42 respectively, buffering subassembly 8 is including feeler block 81 and torsional spring 82, seted up fluted 411 on first jump knot 41, the second jump knot 42 respectively, feeler block 81 rotates and installs in recess 411, torsional spring 82 one end with correspond first jump knot 41 or second jump knot 42 and be connected, the other end is connected with feeler block 81, feeler block 81 is spacing in recess 411 and with correspond first cam 61 or the cooperation of contacting of second cam 62. Equivalent to that the contact block 81 is separately arranged on the first jump buckle 41 or the second jump buckle 42, the contact block 81 is movably and rotatably arranged in the groove 411 and limited by the groove 411, when the contact block 81 is shifted by corresponding cam contact and rotates to the limit, the contact block 81 is abutted against the side wall of the groove 411, and under the action of the torsion spring 82, the jump buckle can be ensured to rotate, and the effect of buffering abrasion can be achieved.

The side of the housing 2 is provided with a buckle 21, and the buckle 21 is used for being buckled with the corresponding first breaker 11 or second breaker 12 to form an assembly structure which is easy to disassemble and assemble and is firm in connection.

The first linkage handle 31 and the second linkage handle 32 are respectively provided with an insertion rod 311, and the insertion rod 311 can be inserted into the handle 111 of the corresponding circuit breaker, so that the first linkage handle 31 or the second linkage handle 32 is respectively linked with the handle 111 of the corresponding first circuit breaker 11 or the second circuit breaker 12.

Claims (5)

1. The utility model provides a miniature circuit breaker's interlocking mechanism, first circuit breaker and second circuit breaker are installed respectively to interlocking mechanism both sides, and first circuit breaker and second circuit breaker are respectively including respective handle and tripping device, and the auxiliary hole that supplies the outside to insert to stir tripping device dropout, its characterized in that are offered respectively to the side of first circuit breaker and second circuit breaker: the interlocking mechanism comprises a shell, a first linkage handle, a second linkage handle, a first jump buckle, a second jump buckle, a first tension spring and a second tension spring;

the first linkage handle and the second linkage handle are rotatably arranged on the shell and are in linkage connection with the handles of the first circuit breaker and the second circuit breaker respectively, and the first linkage handle and the second linkage handle are integrally provided with a first cam and a second cam respectively;

the first jump buckle and the second jump buckle are respectively and rotatably arranged in the shell, and a first driving lever and a second driving lever which extend into the second circuit breaker and are connected with the tripping mechanism through the first circuit breaker auxiliary hole are respectively arranged in the directions of the second circuit breaker and the first circuit breaker;

one ends of the first tension spring and the second tension spring are respectively fixed on the shell, and the other ends of the first tension spring and the second tension spring are respectively connected with the first jump buckle and the second jump buckle;

first cam, second cam jump detain, the cooperation of contacting with first jump knot, second jump respectively in order to pull out corresponding first jump knot, second jump knot rotate when first cam, second cam rotate, first jump is detained, second jump is detained and is driven first driving lever, second driving lever action when rotating in order to trigger the tripping device who corresponds the circuit breaker respectively and carry out the tripping action, first extension spring, second extension spring are detained at first jump, second jump and are detained the rotation back production respectively and reply the pulling force in order to reset first jump knot, second jump and detain.

2. The interlock mechanism of a small size circuit breaker according to claim 1, wherein: the first jump is buckled, the second jumps and is buckled and be provided with buffering subassembly respectively, buffering subassembly is including feeler block and torsional spring, set up flutedly on the first jump is buckled, the second jumps and is buckled respectively, the feeler block rotates and installs in the recess, torsional spring one end is buckled with corresponding first jump or the second jumps and is connected, and the other end is connected with the feeler block, the feeler block is spacing in the recess and with correspond first cam or the cooperation of contacting of second cam.

3. The interlock mechanism of a small size circuit breaker according to claim 1 or 2, wherein: the first jump buckle and the second jump buckle form a crossed structure.

4. The interlock mechanism of a small size circuit breaker according to claim 1 or 2, wherein: the side of casing is provided with the buckle, the buckle is connected with first circuit breaker or second circuit breaker buckle that corresponds.

5. The interlock mechanism of a small size circuit breaker according to claim 1 or 2, wherein: the first linkage handle and the second linkage handle are respectively provided with an inserted link, and the inserted links are inserted into the handles of the corresponding circuit breakers to form linkage.

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