CN216928447U - Circuit breaker handle energy storage transmission structure - Google Patents

Abstract

The utility model discloses a breaker handle energy storage transmission structure, which comprises a handle, a tripping mechanism and a push rod arranged on the handle in a linkage manner, wherein the tripping mechanism comprises a pull rod movably arranged on the motion path of the push rod, the push rod comprises a metal rod body fixedly connected with the handle, and a driving part which is integrally injection-molded on the metal rod body, wherein the driving part is arranged opposite to one end of the pull rod, the handle drives the driving part of the push rod to push the pull rod when the circuit breaker is switched on, and by adopting the technical scheme, the push rod pushes the pull rod to move through the driving part of the injection molding part, thereby not only being capable of extending between two phase circuits of the circuit breaker to play an insulating and isolating effect and avoiding the occurrence of interphase short circuit accidents, meanwhile, the impact abrasion damage to the pull rod is reduced, the impact pressure resistance reliability is good, and the injection molding manufacturing is convenient, so that the service performance and the service life of the push rod are improved.

Description

Circuit breaker handle energy storage transmission structure

Technical Field

The utility model relates to the technical field of low-voltage circuit breakers, in particular to a circuit breaker handle energy storage transmission structure.

Background

The circuit breaker can be used for connecting and disconnecting a load circuit, is an important protective electrical appliance in a low-voltage distribution system, and is mainly used for protecting the circuit to avoid the occurrence of fault conditions such as short circuit, overload and the like. The prior plastic shell type circuit breaker mainly comprises a shell, a handle arranged on the shell, an operating mechanism, a contact system, an arc extinguishing system, an intelligent controller and an electromagnetic tripping mechanism, when short circuit fault occurs, the electromagnetic tripping mechanism drives the traction rod of the operating mechanism to realize tripping action and realize tripping and tripping of the circuit breaker, the electromagnetic tripping mechanism is usually arranged on one side of a handle, the energy storage device is provided with a pull rod for pulling a pull rod in an operating mechanism to realize tripping action, a push rod opposite to the pull rod is arranged on a handle, the handle pushes the pull rod to move through the impact of the push rod when the breaker is switched on to realize the energy storage process, the pull rod can not limit the switching-on action of the pull rod after moving, and provides for triggering the tripping action of the draw bar, which is a metal rod that extends across and engages the draw bar between the A, B phases of the circuit breaker, but the design of such a draw bar still presents the following problems in practical use: as the interphase creepage distance of the push rod of the metal part crossing between A, B phases is short, interphase short circuit accidents are easy to happen, the impact abrasion of the metal push rod to the pull rod is large, the impact pressure resistance reliability is poor, and the service performance and the service life of the push rod are influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the problems that the metal push rod in the prior art is extended between two phases of a circuit breaker, so that interphase short circuit accidents are easy to happen, the damage to the pull rod due to impact and abrasion is large, the reliability of impact pressure resistance is poor, and the service life of a product is influenced.

In order to solve the technical problem, the utility model provides an energy storage transmission structure for a handle of a circuit breaker, which comprises a handle rotatably arranged on a shell, a tripping mechanism arranged on one side of the handle, and a push rod arranged on the handle in a linkage manner, wherein the tripping mechanism comprises a pull rod movably arranged on a motion path of the push rod, the push rod comprises a metal rod body fixedly connected to the handle and extending towards one side of the pull rod, and a driving part integrally formed on the metal rod body in an injection molding manner, the driving part is arranged opposite to one end of the pull rod, and the handle drives the driving part of the push rod to push against the pull rod to drive the pull rod to move when the circuit breaker is switched on.

As a preferred scheme, the metal rod body is of an L-shaped structure, one end of the metal rod body is fixedly connected with the handle, and the driving part is coated on the bent other end of the metal rod body in an injection molding mode.

As a preferable scheme, one end of the metal rod body is provided with a connecting hole, and the metal rod body passes through the connecting hole through a fastening structure to be fixed on the side surface of the handle.

Preferably, a reinforcing rib structure is formed at the corner of the metal rod body.

As a preferred scheme, the driving part is integrally formed on the metal rod body by injection molding of a nylon material.

As a preferable scheme, an arc boss matched and abutted with the driving part is arranged at one end of the pull rod.

As a preferred scheme, the tripping mechanism comprises an installation support, an electromagnetic tripping device and a tripping element, wherein the electromagnetic tripping device is arranged on the installation support, the tripping element is rotatably arranged between the electromagnetic tripping device and the pull rod, a spring structure is arranged between the pull rod and the installation support, the pull rod forms limit fit with the tripping element under the pushing of the push rod, and the electromagnetic tripping device drives the tripping element to rotate and releases the limit fit with the pull rod when being triggered, so that the pull rod resets and moves under the action of the spring structure.

As a preferable scheme, the pull rod is arranged on the mounting bracket in a linear reciprocating motion, and the other end of the pull rod is provided with an L-shaped hook part extending to the front end of the electromagnetic release.

As a preferred scheme, the release member is rotatably arranged on the mounting bracket through a rotating shaft, a torsion spring connected with the release member is sleeved on the rotating shaft, and the electromagnetic release is provided with an ejector rod which is arranged along the moving direction of the pull rod in an extending manner and used for driving the release member to rotate.

As a preferred scheme, two ends of the spring structure are respectively arranged on the inner sides of the mounting bracket and one end of the pull rod, one end of the pull rod is provided with a limiting hook extending towards one side of the release piece, and the release piece comprises a hook arm forming limiting fit with the limiting hook.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

1. according to the energy storage transmission structure of the handle of the circuit breaker, the push rod is composed of the metal rod body and the driving part which is integrally injection-molded on the metal rod body, injection molding and manufacturing are convenient, the driving part is opposite to one end of the pull rod, so that the handle drives the driving part of the push rod to impact and abut against one end of the pull rod when in switch-on.

2. In the energy storage transmission structure of the handle of the circuit breaker, the metal rod body is in an L-shaped structural design, one end of the metal rod body is fixed on the handle, the other end of the metal rod body extends between two phases, the driving part is formed at the other end of the metal rod body in an injection molding mode, the driving part wraps the other end of the metal rod body to play an insulating and isolating role, the use is safe and reliable, the thickness is increased by the injection molding combination of the driving part and the metal rod body, the structural stability is good, and the impact pressure resistance of the push rod is improved.

3. According to the energy storage transmission structure of the handle of the circuit breaker, the reinforced convex rib structure is formed at the bent angle of the metal rod body, so that the structural strength of the metal rod body is favorably enhanced, the phenomenon of bending deformation of the metal rod body under stress and impact is avoided, and the stability of the whole structure of the push rod is ensured.

4. In the energy storage transmission structure of the handle of the circuit breaker, the push rod pushes the pull rod to form limit matching with the tripping piece during the switching-on operation of the handle so as to limit the position of the pull rod after moving, the pull rod is prepared for triggering the tripping action of the pull rod at the moment, the electromagnetic tripping piece is triggered to act when the circuit breaker has a line fault, the electromagnetic tripping piece drives the tripping piece to release the limit matching with the pull rod, the pull rod resets and moves under the action of the spring structure, and the pull rod is pulled to perform the tripping action so as to realize the tripping of the circuit breaker.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below.

Fig. 1 is a schematic plan view of the energy storage transmission structure of the handle of the circuit breaker;

FIG. 2 is a partially enlarged structural schematic view of a handle energy storage transmission structure of the circuit breaker of the present invention;

fig. 3 is a side view of the circuit breaker handle stored energy transmission structure of the present invention;

FIG. 4 is a schematic view of the installation structure of the push rod and the handle of the present invention;

fig. 5 is a schematic structural view of the trip mechanism of the present invention;

description of reference numerals: 1. a handle; 2. a push rod; 21. a metal rod body; 22. a drive section; 23. reinforcing the convex rib structure; 24. a fastening structure; 3. a pull rod; 31. a circular arc boss; 32. an L-shaped hook portion; 33. a limiting hook; 4. an electromagnetic release; 5. releasing the fastener; 51. a hook arm; 52. a torsion spring; 6. mounting a bracket; 7. a spring structure; 8. a housing; 81. a draw bar; 82. a threading groove.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

This embodiment provides as fig. 1-5 a circuit breaker handle energy storage transmission structure, including rotate set up in the handle 1 of casing 8, with set up in the tripping device of handle 1 one side, and the linkage sets up push rod 2 on the handle 1, tripping device includes mobilizable setting is in pull rod 3 on the 2 motion paths of push rod, push rod 2 include fixed connection in handle 1 and orientation the metal body of rod 21 that 3 one side of pull rod extended to and integrative injection moulding is in drive part 22 on the metal body of rod 21, drive part 22 with 3 one end of pull rod sets up relatively, handle 1 drives when closing a floodgate drive part 22 of push rod 2 supports the push-action and is in on the pull rod 3, in order to drive 3 removal of pull rod.

The core technical scheme of this embodiment during above-mentioned embodiment, push rod 2 is through the metal body of rod 21 fixed connection on handle 1, has reliable installation intensity to it is relative with the one end of pull rod 3 to utilize the drive division 22 of injection moulding on the metal body of rod 21, makes handle 1 drive the drive division 22 striking butt of push rod 2 when closing a floodgate in one of pull rod 3, adopts this technical scheme design, push rod 2 promotes pull rod 3 through the drive division 22 of the finished piece of moulding plastics and removes, both can extend and play insulating isolation effect between two looks ways of circuit breaker, in order to avoid taking place alternate short circuit accident, reduces the striking wearing and tearing injury to pull rod 3 simultaneously again, and the withstand voltage reliability of power frequency is good with the impact is withstand voltage, and electric property is good, and injection moulding makes conveniently, thereby promotes the performance and the life of push rod.

The following detailed description of the arrangement of the push rod 2 is made with reference to fig. 1 to 4:

the metal part of push rod carries out injection molding process again after thermal treatment, electroplating and handles, and structural strength is good, the metal body of rod 21 is L shape structure, and its one end links to each other with handle 1 is fixed, the cladding of moulding plastics of drive division 22 is in on the other end that the metal body of rod 21 buckles, wherein, drive division 22 is in by the integrative injection moulding of nylon material on the metal body of rod 21, this kind of structure setting, the other end of the metal body of rod 21 corresponds to extend between the double-phase way of circuit breaker, through drive division 22 cladding is lived the other end of the metal body of rod 21 is in order to play insulating isolation effect, uses safe and reliable to utilize drive division 22 and the metal body of rod 21 to mould plastics and combine in order to increase thickness, structural stability is good, promotes 2 impact pressure resistance of push rod.

The push rod 2 and the handle 1 are fixedly connected through a fastening structure 24, specifically, one end of the metal rod body 21 is provided with a connecting hole, the metal rod body penetrates through the connecting hole through the fastening structure 24 to be fixed on the side face of the handle 1, the push rod 2 faces towards one side of the tripping structure and extends, the fastening structure 24 can be of a screw structure or a rivet structure, the push rod can also be fixed on the handle through a welding structure, and therefore the linkage matching of the push rod 2 and the handle 1 is achieved.

As shown in fig. 4, a reinforced rib structure 23 is formed at the corner of the metal rod body 21, so that the structural strength of the metal rod body 21 is enhanced, the metal rod body 21 is prevented from bending and deforming under the impact of force, and the stability of the overall structure of the push rod 2 is ensured.

As shown in fig. 2, an arc boss 31 is disposed at one end of the pull rod 3 and is matched and abutted against the driving portion 22, so that the arc boss 31 and the driving portion 22 are oppositely disposed, and the driving portion 22 is driven by the handle 1 to push the arc boss 31 to apply an acting force to the pull rod 3 through impact, which is beneficial to reducing friction.

The specific structure of the trip mechanism is described in detail below with reference to fig. 1-2 and 5:

the tripping mechanism comprises a mounting bracket 6 and an electromagnetic trip 4 arranged on the mounting bracket 6, and a release 5 rotatably arranged between the electromagnetic release 4 and the pull rod 3, a spring structure 7 is arranged between the pull rod 3 and the mounting bracket 6, the pull rod 3 forms limit fit with the release part 5 under the pushing of the push rod 2, the electromagnetic release 4 drives the release part 5 to rotate and releases the limit fit with the pull rod 3 when being triggered, so that the pull rod 3 is reset and moves under the action of the spring structure 7, wherein the pull rod 3 is arranged on the mounting bracket 6 in a linear reciprocating motion, the other end of the pull rod 3 is provided with an L-shaped hook part 32 extending to the front end of the electromagnetic release 4, the L-shaped hook 32 is used to pull a draw bar 81 in the circuit breaker to realize a tripping action when the draw bar 3 is reset. According to the structure, the push rod 2 pushes the pull rod 3 and the tripping piece 5 to form limiting matching when the handle 1 is switched on to limit the position of the pull rod 3 after moving, at the moment, the pull rod 3 is prepared for triggering the tripping action of the pull rod 81, when a circuit fault occurs in the circuit breaker, the electromagnetic tripping piece 4 is triggered to act, the electromagnetic tripping piece 4 drives the tripping piece 5 and the pull rod 3 to remove the limiting matching, the pull rod 3 resets and moves under the action of the spring structure 7, and the pull rod 81 is pulled to perform the tripping action to realize the tripping of the circuit breaker.

In order to realize the limit matching between the pull rod 3 and the release fastener 5, two ends of the spring structure 7 are respectively arranged at the inner sides of the mounting bracket 6 and one end of the pull rod 3, one end of the pull rod 3 is formed with a limit hook 33 extending towards one side of the release part 5, the release part 5 comprises a hook arm 51 forming limit fit with the limit hook 33, with the structure, the pull rod 3 is correspondingly abutted against the lug boss on the hook arm 51 when the push rod 2 drives the limit hook 33 to move, thereby limiting the pull rod 3, the pull rod 3 keeps an energy storage state by extruding the spring structure 7, and is released from limiting matching with the release piece 5 when the electromagnetic release 4 is released, and even if the draw bar pulls the draw bar 81 to complete the tripping action under the action of the spring structure, the resetting process of the draw bar is also realized.

As shown in fig. 5, the release 5 rotates through the pivot to set up on installing support 6, the cover is equipped with the connection in the pivot the torsional spring 52 of release 5, electromagnetism release 4 has the edge the direction of motion of pull rod 3 extends the setting and is used for driving release 5 pivoted ejector pin, electromagnetism release 4 can drive when being triggered the ejector pin is linear reciprocating motion, the ejector pin promotes in the motion process release 5 rotates to make the hook arm 51 of release 5 separate with the spacing hook 33 of pull rod 3 in order to relieve the spacing cooperation between the two, then by the action of pull rod 3 pulling traction lever 81 to and be used for realizing the reset function of release 5 through torsional spring 52, the cooperation transmission is reliable, has just so realized the dropout structure to the dropout guard action of circuit breaker.

The threading groove 82 is formed between the tripping mechanism and the side wall of the shell, so that a wire connected with the electromagnetic trip can penetrate into the shell downwards along the threading groove, wiring is simple and convenient, and the practicability is good, so that the wire is prevented from being damaged due to mispressing during installation.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the utility model.

Claims (10)

1. The utility model provides a circuit breaker handle energy storage transmission structure, including rotate set up in handle (1) of casing (8), with set up in the tripping device of handle (1) one side to and the linkage sets up push rod (2) on handle (1), tripping device includes that mobilizable setting is in pull rod (3) on push rod (2) motion path, its characterized in that: push rod (2) including fixed connection in handle (1) and orientation the metal body of rod (21) that pull rod (3) one side extends to and integrative injection moulding is in drive division (22) on the metal body of rod (21), drive division (22) with pull rod (3) one end sets up relatively, the handle drives when closing a floodgate the drive division of push rod (2) supports to push away and is in on pull rod (3), in order to drive the pull rod removes.

2. The circuit breaker handle energy storage transmission structure of claim 1, wherein: the metal rod body (21) is of an L-shaped structure, one end of the metal rod body is fixedly connected with the handle (1), and the driving portion (22) is coated on the other end, bent by the metal rod body (21), in an injection molding mode.

3. The circuit breaker handle energy storage transmission structure of claim 2, wherein: one end of the metal rod body (21) is provided with a connecting hole, and the metal rod body penetrates through the connecting hole through a fastening structure (24) to be fixed on the side face of the handle (1).

4. The circuit breaker handle energy storage transmission structure of claim 3, wherein: and a reinforced convex rib structure (23) is formed at the corner of the metal rod body (21).

5. The circuit breaker handle energy storage transmission structure of claim 1, wherein: the driving part (22) is integrally formed on the metal rod body (21) by nylon materials in an injection molding mode.

6. The circuit breaker handle energy storage transmission structure of claim 5, wherein: and an arc boss (31) matched and abutted with the driving part (22) is arranged at one end of the pull rod (3).

7. The circuit breaker handle stored energy transmission mechanism as claimed in any one of claims 1-6, wherein: tripping device is including setting up installing support (6) on casing (8), and setting up electromagnetic trip ware (4) on installing support (6) to and rotate the setting and be in electromagnetic trip ware (4) with trip spare (5) between pull rod (3), pull rod (3) with be provided with spring structure (7) between installing support (6), pull rod (3) are in under the promotion of push rod with trip spare (5) form spacing cooperation, drive when electromagnetic trip ware (4) are triggered trip spare (5) rotate and with pull rod (3) remove spacing cooperation, so that pull rod (3) move under the effect of spring structure resets.

8. The circuit breaker handle energy storage transmission structure of claim 7, wherein: the pull rod (3) is arranged on the mounting bracket (6) in a linear reciprocating motion mode, and an L-shaped hook portion (32) extending to the front end of the electromagnetic release is arranged at the other end of the pull rod (3).

9. The circuit breaker handle energy storage transmission structure of claim 8, wherein: disengaging part (5) rotate through the pivot and set up on installing support (6), the cover is equipped with in the pivot and connects disengaging part's torsional spring (52), electromagnetism release (4) have the edge the direction of motion of pull rod (3) extends the setting and is used for driving disengaging part (5) pivoted ejector pin.

10. The circuit breaker handle energy storage transmission structure of claim 9, wherein: spring structure (7) both ends set up respectively installing support (6) with the one end of pull rod (3) is inboard, the one end shaping of pull rod (3) is to take off spacing hook (33) that fastener (5) one side extended, take off fastener (5) include with spacing hook forms spacing complex couple arm (51).

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