CN208548331U - The operating mechanism and breaker of breaker - Google Patents

Abstract

The utility model provides the operating mechanism and breaker of a kind of breaker, the operating mechanism of breaker includes handle, the drive rod being connected on the handle, the lever connecting with the moving contact, the lock connecting with the lever, the reset spring for connecting the lever and the lock and the tripping connecting with the drive rod and the lever, and the lock, which is arranged with the lever coaxial and passes through shaft, to be connect.The operating mechanism and breaker of breaker provided by the utility model, which are arranged with the lever coaxial by the lock and pass through shaft, to be connect, so that after the lock is unlocked with the tripping, the separated movement that the moving contact is independently rotated with the lever to realize the static contact and the moving contact, so as to the movement inertia of reducing mechanism, the opening speed of mechanism is improved, in favor of the current limiting performance of short circuit current.

Description

The operating mechanism and breaker of breaker

Technical field

The utility model relates to breaker technical field more particularly to the operating mechanisms and breaker of a kind of breaker.

Background technique

Breaker is the electric current referred to close, carry and cut-off under normal loop condition and can close, when defined Interior carrying and the switching device for cut-offfing the electric current under abnormal loop condition.Breaker can be used to distribute electric energy, infrequently open Dynamic asynchronous motor protects the implementations such as power circuit and motor, when serious overload or short circuit and under-voltage occurs in they Etc. failures when can cut off circuit, the combination that function is equivalent to Fuse switch and crosses underheat relay etc., and in disjunction Change components are not needed after fault current generally.

The disjunction of breaker is realized by the movement of operating mechanism.Currently, the operating mechanism of common breaker includes Tripping, lock and lever, wherein tripping and lock are by the protruding shaft progress shaft hole matching installation on lever, after mechanical unlocking, Tripping and lock are rotated with lever around shell fixing axle.However this operating mechanism can make the mechanism after tripping integrally turn Dynamic inertia is big, keeps mechanism opening speed slow, influences the current limiting capacity of short circuit current.

Utility model content

The utility model provides a kind of operating mechanism of breaker, it is intended to which the operating mechanism for solving current breaker exists The big problem of unitary rotation inertia.

The utility model is realized in this way a kind of operating mechanism of breaker, is contained in insulation shell, the insulation It is equipped with static contact and moving contact in shell, the operating mechanism of the breaker includes handle, the transmission that is connected on the handle Bar, the lever being connect with the moving contact, the lock being connect with the lever, the reset bullet for connecting the lever and the lock Spring and the tripping connecting with the drive rod and the lever, the lock are arranged with the lever coaxial and are connected by shaft It connects, so that the lock is with after tripping unlock, the moving contact is independently rotated with the lever to realize the static contact With the separated movement of the moving contact.

Preferably, torsional spring is connected on the lever, the torsional spring is configured to, when it is described lock with it is described After tripping unlock, the lever drives the moving contact to rotate to realize the stationary contact under the elastic force effect of the torsional spring The separated movement of head and the moving contact.

Preferably, the lock is equipped with the rotary table centered on the shaft, and the reset spring is around the circle The torsional spring of platform setting, and two pins of the reset spring are respectively arranged on the lever and the lock.

Preferably, it is respectively formed with fixture block on the lever and the lock, the pin of the reset spring is connected to institute It states on fixture block, due to the barrier effect of the fixture block, after the lock is unlocked with the tripping, in the bullet of the reset spring Under power effect, the lock re-establishes locking with the tripping and couples.

Preferably, the moving contact is equipped with through-hole, is formed with the pivot for being inserted into the through-hole on the lever, and described Lever is connect with the moving contact by touch spring, when the static contact and the moving contact are closed, the moving contact around It is described to pivot, and make the touch spring that elastic deformation occur.

Preferably, the touch spring is the torsional spring around pivot setting, and the touch spring includes set on described The first pin on lever and the second pin on the moving contact.

Preferably, first pin is connected on the lever；The second pin includes the first extension and from institute The end for stating the first extension successively bends the second extension and third extension to extend out, first extension and institute It states third extension and is located at the lever perpendicular to the two opposite sides of its Plane of rotation, and the lever is sticked in described Between one extension and the third extension.

Preferably, it is additionally provided with bimetal leaf in the insulation shell, pull rod, the pull rod quilt are also connected on the lock It is arranged to, when the static contact and moving contact closure, the pull rod is far from described lock one end and the bimetal leaf It offsets, so that the bimetal leaf makes the lock and the jump by the pull rod when bimetal leaf temperature distortion Button unlock.

The utility model also provides a kind of breaker, and the breaker includes such as the breaker as described in any one of above-mentioned Operating mechanism.

The operating mechanism and breaker of breaker provided by the utility model are set by the lock with the lever coaxial It sets and is connected by shaft, so that the lock is with after tripping unlock, the moving contact independently rotates (i.e. with the lever Latch not with lever rotation) to realize the separated movement of the static contact and the moving contact, so as to the fortune of reducing mechanism Dynamic inertia, improves the opening speed of mechanism, in favor of the current limiting performance of short circuit current.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of breaker provided by the embodiment of the utility model；

Fig. 2 is the structural schematic diagram of part-structure in breaker shown in Fig. 1；

Fig. 3 is the structural schematic diagram of another angle of part-structure shown in Fig. 2；

Fig. 4 is the exploded view of part-structure shown in Fig. 2；

Fig. 5 is the structural schematic diagram of another angle of lever in part-structure shown in Fig. 4.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

The operating mechanism and breaker of breaker provided by the utility model are set by the lock with the lever coaxial It sets and is connected by shaft, so that the lock is with after tripping unlock, the moving contact independently rotates (i.e. with the lever Latch not with lever rotation) to realize the separated movement of the static contact and the moving contact, so as to the fortune of reducing mechanism Dynamic inertia, improves the opening speed of mechanism, in favor of the current limiting performance of short circuit current.

Please refer to Fig. 1-5, wherein Fig. 1 is the structural schematic diagram of breaker provided by the embodiment of the utility model；Fig. 2 is The structural schematic diagram of part-structure in breaker shown in Fig. 1；Fig. 3 is the structural schematic diagram of another angle of part-structure shown in Fig. 2； Fig. 4 is the exploded view of part-structure shown in Fig. 2；Fig. 5 is the structural schematic diagram of another angle of lever in part-structure shown in Fig. 4. Breaker includes insulation shell 1 and static contact 3 in the insulation shell 1, moving contact 4, electromagnetic unlocking device 5 and disconnected The operating mechanism 7 of road device.

The operating mechanism 7 of the breaker is moved including handle 71, the drive rod 72 being connected on the handle 71, with described The lever 73 of the connection of contact 4, the lock 74 being connect with the lever 73, the reset bullet for connecting the lever 73 and the lock 74 Spring 75 and the tripping 76 being connect with the drive rod 72 and the lever 73.The lock 74 is coaxially disposed with the lever 73 And connected by shaft 77, so that the lock 74 is with after the tripping 76 unlock, the moving contact 4 is independent with the lever 73 Rotate the separated movement to realize the static contact 3 and the moving contact 4.

Wherein, the insulation shell 1 is equipped with the opening 11 as 71 channel of handle, and the handle 71 is configured to Limitedly be pivoted on the static contact 3 on the insulation shell 1 and the moving contact 4 be in closed state closed position and Corresponding between the separated open position of the static contact 3 and the moving contact 4.The drive rod 72 and the handle 71 and institute It states the connection of lever 73 and forms toggle mechanism, which is located at the fixation of joint A and the handle 71 on the handle 71 Pin C and the toggle mechanism are located at the joint B in the tripping 76 and the equal decentraction of pivot pin D of the tripping 76.The reset Spring 75 is configured to, and when the lock 74 does not unlock with the tripping 76, the reset spring 75 is in original state, when The lock 74 is with after the tripping 76 unlock, and elastic deformation occurs for the reset spring 75, in the bullet of the reset spring 75 Under power effect, the lock 74 re-establishes locking with the tripping 76 and couples.The shaft 77 and the insulation shell 1 are fixed (for example, fixation hole (not shown) can be arranged in the insulation shell 1, the shaft 77 is fixed in the fixation hole).It is described Static contact 3 is fixed in the main body of the electromagnetic unlocking device 5.

When breaker is in normal condition, (there is no serious overload or short circuit and the failures such as under-voltage for breaker When), the lock 74 does not unlock with the tripping 76, the drive rod 72 can be made to drive institute by stirring the handle 71 Lever 73, the lock 74 and the rotation of the moving contact 4 are stated to realize 4 closing or opening of the static contact 3 and the moving contact.

When serious overload or short circuit and the failures such as under-voltage occur for breaker, the electromagnetic unlocking device 5 is powered.It is logical After electricity, the ram of the electromagnetic unlocking device 5 hits the lock 74 and the lock 74 is unlocked with the tripping 76.Solution After lock, the handle 71 rotates the open position separated to the static contact 3 and the moving contact 4, and the reset spring 75 produces Raw elastic deformation and the moving contact 4 realize the static contact 3 and the moving contact 4 with the independent rotation of the lever 73 Separately movement.In the case where the reset spring 75 restores the elastic force effect of deformation, the lock 74 is re-established with the tripping 76 Locking connection, to the drive rod 72 can be made to drive institute by stirring the handle 71 after circuit breaker trip disconnection Lever 73, the lock 74 and the rotation of the moving contact 4 are stated to realize that the static contact 3 and the moving contact 4 are closed.

In the present embodiment, torsional spring 78 is connected on the lever 73, the torsional spring 78 is configured to, and works as institute Lock 74 is stated with after the tripping 76 unlock, the lever 73 drives the dynamic touching under the elastic force effect of the torsional spring 78 The first 4 separated movements rotated to realize the static contact 3 and the moving contact 4.

In the present embodiment, the lock 74 is equipped with the rotary table 741 centered on the shaft 74, the reset spring 75 be the torsional spring around the rotary table 741 setting, and two pins of the reset spring 75 are respectively arranged on 73 He of lever On the lock 74.It can be conducive to the lock 74 and the tripping 76 when the reset spring 75 generates elastic deformation in this way Re-establish locking connection.

In the present embodiment, fixture block 79, the reset spring 75 are respectively formed on the lever 73 and the lock 74 Pin be connected on the fixture block 79, due to the barrier effect of the fixture block 79, when the lock 74 is solved with the tripping 76 After lock, under the elastic force effect of the reset spring 75, the lock 74 re-establishes locking with the tripping 76 and couples.It is this The reset spring 75 connects the lever 73 and the structure of the lock 74 is not only simple in structure, and is easily installed.

In the present embodiment, the moving contact 4 is equipped with through-hole 41, and the insertion through-hole 41 is formed on the lever 73 Pivot 731, and the lever 73 and the moving contact 4 are connect by touch spring 8, when the static contact 3 and the dynamic touching When first 4 closure, the moving contact 4 is rotated around the pivot 731, and makes the touch spring 8 that elastic deformation occur.Therefore, After the static contact 3 and the moving contact 4 are closed, if the static contact 3 is removed, the moving contact 4 can continue forward It is mobile to realize the excess of stroke.I.e. after the static contact 3 and the moving contact 4 are closed, due to the presence of 8 elastic force of touch spring The static contact 3 and the moving contact 4 can be made closely to be closed.

In the present embodiment, the touch spring 8 is the torsional spring around the pivot 731 setting, and the touch spring 8 wraps Include the first pin 81 being set on the lever 73 and the second pin 83 on the moving contact 4.

In the present embodiment, first pin 81 is connected on the lever 73, and the second pin 83 includes first Extension 831 and the second extension 833 to extend out and third are successively bent from the end of first extension 831 extend Portion 835, first extension 831 and the third extension 835 are located at the lever 73 perpendicular to its Plane of rotation Two opposite sides, and the lever 73 is sticked between first extension 831 and the third extension 835.It is this super Not only structure is more simple for journey mechanism, is also convenient for processing and installation.

In the present embodiment, it is additionally provided with bimetal leaf 9 in the insulation shell 1, is also connected with pull rod on the lock 74 10, the pull rod 10 is configured to, and when the static contact 3 and the closure of the moving contact 4, the pull rod 10 is far from the lock 74 one end offset with the bimetal leaf 9, so that the bimetal leaf 9 passes through the drawing when 9 temperature distortion of bimetal leaf Bar 10 unlocks the lock 74 with the tripping 76.

The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle Within the scope of shield.

Claims (9)

1. a kind of operating mechanism of breaker, is contained in insulation shell, static contact and moving contact are equipped in the insulation shell, The operating mechanism of the breaker include handle, the drive rod being connected on the handle, the lever being connect with the moving contact, The lock that is connect with the lever, the reset spring for connecting the lever and the lock and with the drive rod and the thick stick The tripping of bar connection, which is characterized in that the lock, which is arranged with the lever coaxial and passes through shaft, to be connect, so that the lock After tripping unlock, the moving contact independently rotates point to realize the static contact and the moving contact with the lever Start work.

2. the operating mechanism of breaker as described in claim 1, which is characterized in that it is connected with torsional spring on the lever, After the lock is unlocked with the tripping, the lever drives the moving contact to revolve under the elastic force effect of the torsional spring Turn the separated movement to realize the static contact and the moving contact.

3. the operating mechanism of breaker as described in claim 1, which is characterized in that the lock, which is equipped with the shaft, is The rotary table at center, the reset spring is the torsional spring around rotary table setting, and two pins of the reset spring are distinguished On the lever and the lock.

4. the operating mechanism of breaker as claimed in claim 3, which is characterized in that distinguish shape on the lever and the lock At there is fixture block, the pin of the reset spring is connected on the fixture block, due to the barrier effect of the fixture block, when the lock After tripping unlock, under the elastic force effect of the reset spring, the lock re-establishes locking connection with the tripping It connects.

5. the operating mechanism of breaker as described in claim 1, which is characterized in that the moving contact is equipped with through-hole, described The pivot for being inserted into the through-hole is formed on lever, and the lever is connect with the moving contact by touch spring, when described When static contact and the moving contact are closed, the moving contact is pivoted around described, and makes the touch spring that elasticity occur Deformation.

6. the operating mechanism of breaker as claimed in claim 5, which is characterized in that the touch spring is around the pivot The torsional spring of setting, the touch spring include that the first pin on the lever and second on the moving contact are drawn Foot.

7. the operating mechanism of breaker as claimed in claim 6, which is characterized in that first pin is connected to the lever On；The second pin includes the first extension and successively bends second to extend out from the end of first extension and prolong Extending portion and third extension, first extension and the third extension are located at the lever perpendicular to its rotary flat The two opposite sides in face, and the lever is sticked between first extension and the third extension.

8. the operating mechanism of breaker as described in claim 1, which is characterized in that be additionally provided with bimetallic in the insulation shell Piece is also connected with pull rod on the lock, and when the static contact and the moving contact are closed, the pull rod is far from the lock One end offsets with the bimetal leaf, so that the bimetal leaf is made by the pull rod when bimetal leaf temperature distortion The lock is obtained to unlock with the tripping.

9. a kind of breaker, the operating mechanism including breaker such as of any of claims 1-8.