CN218351318U - Locking structure and circuit breaker of circuit breaker - Google Patents

Abstract

The utility model relates to a low-voltage apparatus field, concretely relates to locking structure of circuit breaker, it includes that the rocking arm rotates and sets up, push rod one end cooperates with driving piece, the other end is the push rod locking part, the driving piece includes the installation department that links to each other with the rocking arm is fixed and the drive division that links to each other with the installation department, the drive division includes linkage segment and drive section, linkage segment one end links to each other with the installation department, the other end extends to the direction of keeping away from the axis of rocking arm and links to each other with the drive section; when the rocker arm swings to a switching-on position, the driving piece drives the push rod to slide, so that the locking part of the push rod protrudes out of the shell, the elastic resetting piece stores energy, and an acting force for enabling the push rod to move towards the shell is applied to the push rod; the locking structure can effectively prevent the circuit breaker from being inserted into or pulled out of a circuit breaker mounting position in a closing state, and the reliability is high; the utility model discloses still relate to one kind and include locking structure's circuit breaker, it includes locking structure, its security is good.

Description

Locking structure of circuit breaker and circuit breaker

technical field

The utility model relates to the field of low-voltage electrical appliances, in particular to a locking structure of a circuit breaker and a circuit breaker comprising the locking structure.

Background technique

As shown in Figure 1, in the prior art, in order to ensure the safe use of the plug-in circuit breaker, so that it cannot be pulled out in the closed state, a locking structure is provided inside the circuit breaker, which includes a push rod 3 and an elastic reset member 4 , the rocker arm 1 of the circuit breaker is provided with a drive rod 2a; when the circuit breaker is closed, the drive rod 2a pushes the push rod 3 to slide, so that the push rod insert 3-2-1 at one end of the push rod 3 protrudes out of the circuit breaker shell The outer side of the circuit breaker is locked with the housing structure of the circuit breaker installation position to prevent the circuit breaker from being pulled out; due to the small size of the circuit breaker with a small rated current, the swing stroke of the rocker arm 1 is small, and the rocker arm 1 drives the push rod through the drive rod 2a 3. The sliding distance is short, and the part of the push rod insert 3-2-1 protruding outside the housing 5 is short, so that the locking structure cannot reliably lock the circuit breaker, and there is still the safety of the circuit breaker being pulled out in the closed state. risk.

Utility model content

The purpose of this utility model is to overcome the defects of the prior art and provide a locking structure of a circuit breaker, which can effectively prevent the circuit breaker from being inserted into or pulled out of the circuit breaker installation position in the closed state, and has high reliability; it also provides a A circuit breaker, which includes the locking structure, has good safety.

In order to achieve the above object, the utility model adopts the following technical solutions:

A circuit breaker locking structure, which includes a circuit breaker case and rocker arms respectively arranged in the case, a driving member fixedly arranged on the rocker arm, a push rod slidably arranged on the case, and a push rod matched with the The elastic reset part is set by the rotation of the rocker arm. One end of the push rod is matched with the drive part, and the other end is the push rod locking part. The drive part includes a mounting part fixedly connected with the rocker arm and a driving part connected with the mounting part. The driving part includes a connecting section and the driving section, one end of the connecting section is connected with the installation part, and the other end extends in a direction away from the axis of the rocker arm and is connected with the driving section; The locking part of the rod protrudes outside the housing, and the elastic restoring part stores energy and applies force to the push rod to move into the housing.

Preferably, the driving section is bent and connected to the connecting section and is parallel to the rotation axis of the rocker arm.

Preferably, the driving section is located outside the operating end of the rocker arm, and the distance between the driving section and the rotation axis of the rocker arm is greater than the distance between the operating end of the rocker arm and the rotation axis of the rocker arm.

Preferably, the installation part is provided with a drive part installation hole, the rocker arm is provided with a rocker arm installation hole, and the fixing part passes through the rocker arm installation hole and the drive part installation hole to fix the installation part and the rocker arm.

Preferably, the driving part also includes a limiting structure of the driving part, which cooperates with the rocker arm to prevent the driving part from rotating relative to the rocker arm; the limiting structure of the driving part is a limiting structure connected to the installation part by bending The position arm includes a first limit hole, and the limit arm is inserted into the first limit hole.

Preferably, the housing further includes a housing guiding and limiting structure, and the housing guiding and limiting structure cooperates with the sliding limit of the push rod, so that the pushing rod only has the freedom to slide in one direction relative to the housing.

Preferably, the housing guiding and limiting structure includes a housing guide rail, and the housing guide rail includes a housing guide groove disposed in the middle thereof;

The locking structure further includes a push rod slider fixedly connected with the push rod, the push rod slider includes a slider arm, and the slider arm is slidably arranged in the guide groove of the casing.

Preferably, the housing guide limit structure includes an upper limit structure and a lower limit structure arranged at intervals relative to each other, and the push rod locking part is slidably disposed between the upper limit structure and the lower limit structure.

Preferably, the upper limit structure is an upper limit plate; the lower limit structure includes at least one pair of lower rail ribs arranged in parallel and spaced apart.

Preferably, the housing further includes a housing slide rail structure, the housing slide rail structure includes a housing chute, and the push rod further includes a push rod slidably arranged in the housing chute and connected to the push rod locking portion by bending sliding part.

Preferably, the push rod further includes a push rod limiting arm connected with the push rod locking part and arranged side by side with the push rod sliding part; Between the housing limit platform, the push rod limit arm and the housing limit platform limit cooperation.

Preferably, the push rod includes a push rod fitting part, the push rod fitting part and the push rod locking part are respectively connected to both ends of the push rod sliding part, and the push rod fitting part is matched with the driving part; the housing also includes a One end of the slide rail structure is connected to the housing spring limiting plate, and the elastic reset member is arranged between the housing spring limiting plate and the push rod matching part.

The locking structure of the circuit breaker of the utility model, the rocker arm swings to close the circuit breaker, and at the same time drives the push rod to slide through the driving part, so that the locking part of the push rod protrudes outside the housing; when the circuit breaker is installed in the circuit breaker installation position , the locking part of the push rod cooperates with the structural limit of the circuit breaker installation position, preventing the circuit breaker from being pulled out of the circuit breaker installation position in the closed state, ensuring the stability and safety of power consumption; when the circuit breaker is in the closed state, push The locking part of the lever cooperates with the structural limit of the installation position of the circuit breaker, which can also prevent the circuit breaker from being inserted into the installation position of the circuit breaker; one end of the connecting section of the driving part is connected with the installation part, and the other end extends away from the axis of the rocker arm And it is connected with the driving section. When the rocker arm swings at the same angle, the driving section can swing a larger distance, so that the push rod can be driven to slide for a larger distance, so that the part of the push rod locking part protruding outside the housing is longer , so that the cooperation between the locking part of the push rod and the structure of the installation position of the circuit breaker is more reliable.

In addition, the housing guiding and limiting structure cooperates with the sliding limit of the push rod, so that the pushing rod only has the degree of freedom to slide relative to the housing in one direction, thereby preventing the pushing rod from being inserted or pulled out along the circuit breaker. position, which can effectively prevent the circuit breaker from being inserted into or pulled out of the circuit breaker installation position in the closed state. In case of parts failure, the reliable and normal use of the locking structure is guaranteed.

The circuit breaker of the utility model includes the locking structure, which has good safety.

Description of drawings

Fig. 1 is a structural schematic diagram of a locking structure of a circuit breaker in the prior art;

Fig. 2 is a three-dimensional structural schematic diagram of the locking structure of the circuit breaker of the utility model when the circuit breaker is in the closed state;

Fig. 3 is the enlarged structure schematic diagram of part A of Fig. 2 of the utility model;

Fig. 4 is a schematic diagram of the projection structure of the locking structure of the circuit breaker of the utility model when the circuit breaker is in the tripped state;

Fig. 5 is a schematic diagram of the projection structure of the locking structure of the circuit breaker of the utility model when the circuit breaker is in the closed state;

Fig. 6 is a structural schematic diagram of the locking structure of the circuit breaker of the present invention, showing the sliding distance of the push rod when the circuit breaker is switched between the closing state and the tripping state;

Fig. 7 is a structural schematic diagram of the locking structure of the circuit breaker of the present invention, which shows the first embodiment of the cooperation between the housing guiding and limiting structure and the push rod;

Fig. 8 is an exploded schematic diagram of the locking structure of the circuit breaker in Fig. 7 of the present invention;

Fig. 9 is a structural schematic diagram of the locking structure of the circuit breaker of the present invention, which shows the second embodiment of the cooperation between the housing guiding and limiting structure and the push rod;

Fig. 10 is an exploded schematic diagram of the locking structure of the circuit breaker in Fig. 9 of the present invention.

Detailed ways

The specific implementation of the locking structure of the circuit breaker of the present invention will be further described below with reference to the embodiments given in the accompanying drawings 1-10. The locking structure of the circuit breaker of the present invention is not limited to the description of the following embodiments.

The locking structure of the circuit breaker of the utility model includes a housing 5 of the circuit breaker, a rocker arm 1 of the circuit breaker respectively arranged in the housing 5, a driving member 2 fixedly arranged on the rocker arm 1, and a driving member 2 slidably arranged on the housing 5. The push rod 3 on 5 and the elastic reset part 4 matched with the push rod 3, the rocker arm 1 is used to drive the circuit breaker to open and close, the rocker arm 1 is rotated and set, one end of the push rod 3 cooperates with the drive part 2, and the other end is the push rod 3. The rod locking part 3-2, the driving part 2 includes a mounting part 2-0 fixedly connected to the rocker arm 1 and a driving part 2-1 connected to the mounting part 2-0, and the driving part 2-1 includes a connecting section and a driving section 2 -1-0, one end of the connecting section is connected to the installation part 2-0, and the other end extends in a direction away from the axis of the rocker arm 1 and is connected to the driving section 2-1-0; when the swing 1 swings to the closing position, it passes The driving part 2 drives the push rod 3 to slide, so that the push rod locking part 3 - 2 protrudes outside the casing 5 , and the elastic reset part 4 stores energy to apply force to the push rod 3 to move into the casing 5 . Further, when the circuit breaker is opened or tripped, when the swing 1 swings to the opening position or the tripping position, the elastic reset member 4 releases energy to drive the push rod 3 to move into the housing 5 .

In the locking structure of the circuit breaker of the utility model, the rocker arm 1 swings to close the circuit breaker, and at the same time drives the push rod 3 to slide through the driving part 2, so that the push rod locking part 3-2 protrudes outside the housing 5; when the circuit breaker When installed in the installation position of the circuit breaker, the locking part of the push rod 3-2 cooperates with the structural limit of the installation position of the circuit breaker to prevent the circuit breaker from being pulled out of the installation position of the circuit breaker in the closed state, ensuring the stability and safety of power consumption; When the circuit breaker is in the closed state, the push rod locking part 3-2 cooperates with the structural limit of the circuit breaker installation position, and can also prevent the circuit breaker from being inserted into the circuit breaker installation position; the connecting section of the drive part 2-1, One end is connected to the mounting part 2-0, and the other end extends away from the axis of the rocker arm 1 and is connected to the drive section 2-1-0. When the rocker arm 1 swings at the same angle, the drive section 2-1-0 Swing a larger distance, so that the push rod 3 can be driven to slide a larger distance, so that the part of the push rod locking part 3-2 protruding outside the housing 5 is longer, so that the push rod locking part 3-2 is in line with the circuit breaker installation position. The cooperation of the structure is more reliable.

The "circuit breaker installation position" refers to the cabinet, power distribution cabinet and distribution box for installing and accommodating the circuit breaker. The circuit breaker installation position includes the installation position housing, and the installation position housing is equipped with a The sheet 3-2-1 cooperates with the escape groove or hole for its insertion.

As shown in Figure 2-10, it is an embodiment of the locking structure of the circuit breaker of the present invention.

As shown in Figures 2 and 7-10, the locking structure of this embodiment includes the housing 5 of the circuit breaker, the rocker arm 1 of the circuit breaker respectively arranged in the housing 5, the driving member 2 fixedly arranged on the rocker arm 1, Slide the push rod 3 that is arranged on the housing 5 and the elastic reset member 4 that cooperates with the push rod 3, and one end of the rocking arm 1 (preferably the lower end of the rocking arm 1) is rotated and arranged on the mechanism support of the operating mechanism, and one end of the push rod 3 Cooperate with the driver 2, the other end is the push rod lock part 3-2, the push rod lock part 3-2 includes the push rod insert 3-2-1, the drive part 2 includes the installation part 2- which is fixedly connected with the rocker arm 1 0 and the drive part 2-1 connected to the installation part 2-0, the drive part 2-1 includes a connection section and a drive section 2-1-0, one end of the connection section is connected to the installation part 2-0, and the other end is away from the rocker arm 1 and is connected to the driving section 2-1-0; the rocker arm 1 swings to close the circuit breaker (preferably, the rocker arm 1 swings clockwise to close the circuit breaker, and the rocker arm 1 reverses The clockwise swing makes the circuit breaker open), and drives the push rod 3 to slide through the drive part 2, so that the push rod insert 3-2-1 protrudes through the housing opening 5-0 on the housing 5 and protrudes on the housing 5 Externally, the elastic reset part 4 stores energy and applies force to the push rod 3 to move it into the housing 5; when the circuit breaker is in the state of tripping, rebuckle or opening, the rocker arm 1 drives the driving part 2 to avoid The push rod 3 and the elastic reset part 4 are released to drive the push rod 3 to slide to the initial position, so that the push rod insert 3-2-1 moves into the housing 5 .

As shown in Figures 1 and 6, when the circuit breaker of the prior art and the circuit breaker of this embodiment are switched from the closed state to the tripped state (in Figures 1 and 6, the upper part is the locking state of the circuit breaker in the closed state. structure, the one below is the locking structure of the circuit breaker in the tripped state), and the swing angle of the rocker arm 1 is the same; while one end of the connecting section of the driving member 2 in this embodiment is connected with the installation part 2-1, and the other end is away from the rocker The direction of the axis of the arm 1 extends and is connected with the drive section 2-1-0, so that the distance between the drive section 2-1-0 and the axis of rotation of the rocker arm 1 is greater than the distance between the drive rod 2a and the axis of rotation of the rocker arm 1. As a result, when the swing arm 1 of the prior art circuit breaker and the circuit breaker of this embodiment swings at the same angle, the swing distance of the drive section 2-1-0 is greater than the swing distance of the drive rod 2a, so that the push rod 3 of this embodiment The sliding distance d2 is greater than the sliding distance d1 of the push rod 3 in the prior art.

As shown in Figures 2, 4-5, 7, and 9, the driving section 2-1-0 is bent and connected to the connecting section and is parallel to the rotation axis of the rocker arm 1 . Further, the extending direction of the driving section 2 - 1 - 0 is perpendicular to the sliding direction of the push rod 3 .

Preferably, as shown in Figure 3, the connecting section includes a first connecting section plate 2-1-1 and a connecting section second plate 2-1-2, a mounting plate 2-0, and a connecting section second plate 2-1 -2. The first board 2-1-1 of the connection section is connected to the drive section 2-1-0 in sequence, the second board 2-1-2 of the connection section, the first board 2-1-1 of the connection section and the drive section 2- 1-0 has a Z-shaped structure as a whole, and the second plate 2-1-2 of the connecting section is arranged in parallel with the driving section 2-1-0.

As shown in Figures 2, 4-5, 7, and 9, the drive section 2-1-0 is located on the outside of one end of the rocker arm 1 for operation, and the distance between the drive section 2-1-0 and the rotation axis of the rocker arm 1 The distance is greater than the distance between the end for operation of the rocker arm 1 and the rotation axis of the rocker arm 1 . Specifically, as shown in Figures 2, 4-5, 7, and 9, the driving section 2-1-0 is located above the upper end of the rocker arm 1 (that is, the end for operation of the rocker arm 1), protruding on the upper end of rocker arm 1.

As shown in Figure 2-10, the installation part 2-0 is provided with a driver installation hole 2-0-0, the rocker arm 1 is provided with a rocker installation hole, and the fixing member 12 is installed through the rocker installation hole and the driver. The hole 2-0-0 fixedly connects the mounting part 2-0 to the rocker arm 1; the drive member 2 also includes a drive member stop structure, which cooperates with the rocker arm 1 to prevent the drive member 2 from moving relative to the rocker arm. Arm 1 rotates.

Preferably, as shown in FIGS. 7-10 , the fixing member 12 is a rivet or a screw.

As shown in Figure 2-6, it is an implementation of the limiting structure of the driving part: the limiting structure of the driving part is a limiting arm 2-2 bent and connected to the mounting part 2-0, and the rocker arm 1 Including the first limiting hole, the limiting part 2-2 is inserted in the first limiting hole. Further, the limit arm 2-2 is bent toward the side where the rocker arm 1 is located, and the limit arm 2-2 is located on the side of the drive member installation hole 2-0-0.

As shown in Fig. 7-10, it is another implementation of the limiting structure of the driving part: the limiting structure of the driving part is the limiting hole 2-0-1 of the driving part provided on the installation part 2-0 , the driving member limiting hole 2-0-1 is arranged side by side with the driving member installation hole 2-0-0; the rocker arm 1 also includes a second limiting hole, and the limiting member is inserted in the driving member limiting hole 2-0- 0-1 and the second limit hole.

Preferably, the limiting member is preferably a rivet or a screw.

As shown in FIG. 2-10, the installation part 2-0 and the drive part 2-1 are located on the same side of the installation part 2-0.

As shown in Figure 7-10, the rocker arm 1 is a U-shaped structure, which includes a rocker arm main board 1-0 and a rocker arm support plate 1-1, two rocker arm support plates 1-1 and a rocker arm main board 1-1 0, the two ends are bent and connected; the installation part 2-0 of the driving member 2 is fixedly arranged on a rocker arm support plate 1-1, and the end of the rocker arm support plate 1-1 away from the rocker arm main board 1-0 is rotated and arranged On the mechanism bracket of the operating mechanism.

As shown in Fig. 7-10, the housing 5 also includes a housing guiding and limiting structure 5-1, and the housing guiding and limiting structure 5-1 cooperates with the sliding limit of the push rod 3 so that the pushing rod 3 only has relative Due to the degree of freedom of the housing 5 sliding in one direction, that is, only the push rod 3 is allowed to slide relative to the housing 5 , so that the push rod insert 3 - 2 - 1 protrudes or moves into the housing 5 . Further, the sliding direction of the push rod 3 is perpendicular to the direction in which the circuit breaker is inserted into or pulled out of the installation position of the circuit breaker.

The housing guide limit structure 5-1 cooperates with the sliding limit of the push rod 3, so that the push rod 3 only has the freedom to slide in one direction relative to the housing 5, thereby preventing the push rod 3 from being inserted or inserted along the circuit breaker. Pull out the direction of the circuit breaker installation position to move, which can effectively prevent the circuit breaker from being inserted or pulled out of the circuit breaker installation position in the closed state, and the push rod insert 3-2-1 is blocked by the housing of the circuit breaker installation position and deformed And/or displacement, damage to other components in the housing 5 occurs, ensuring reliable and normal use of the locking structure.

As shown in Fig. 7-8, it is the first embodiment of the sliding and limiting cooperation between the housing guiding and limiting structure 5-1 and the push rod 3.

The housing guiding and limiting structure 5-1 includes a housing guide rail 5-1-0, and the housing guide rail 5-1-0 includes a housing guide groove arranged in the middle; the locking structure will also include a push rod 4. The push rod slider 6 is fixed and connected. The push rod slider 6 includes a slider arm 6-1, and the slider arm 6-1 is slidably arranged in the housing guide groove.

As shown in Figure 7-8, it is a realization of the cooperation between the housing guiding and limiting structure 5-1 and the push rod slider 6: the housing guiding and limiting structure 5-1 includes two side-by-side intervals. Each housing guide rail 5-1-0, each housing guide rail 5-1-0 includes a housing guide groove arranged in the middle, and the housing guide groove and the housing guide rail 5-1-0 extend in the same direction; The push rod slider 6 also includes a slider connecting plate 6-0 fixedly connected to the push rod 3, two slider arms 6-1 are arranged, and the two slider arms 6-1 are symmetrically arranged on the slider connecting plate The two sides of the 6-0 are respectively connected to it, and the two slider arms 6-1 are respectively arranged in the housing guide grooves of the two housing guide rails 5-1-0.

Specifically, as shown in Figure 7, the slider arm 6-1 cooperates with the guide groove of the housing to prevent the push rod locking part 3-2 from moving up and down, and the push rod locking part 3-2 can only move relative to the housing 5. Moving inside and outside, that is, sliding to the outside of the housing 5 and sliding to the inside of the housing 5; when the circuit breaker is inserted into or pulled out of the circuit breaker installation position in the closed state, the push rod insert 3-2-1 protrudes Outside the housing 5, the push rod insert 3-2-1 is blocked by the housing of the circuit breaker installation position, which may cause the push rod locking part 3-2 to turn over, deform and/or displace, and the slider arm 6-1 Cooperating with the housing guide groove can avoid the above problems.

As shown in Figure 8, it is a realization of the push rod slider 6: the push rod slider 6 includes a slider connecting plate 6-0 and a slider arm fixedly connected to the push rod locking part 3-2 6-1, the slider connecting plate 6-0 is respectively connected with the two slider arms 6-1 in parallel dislocation, and the two slider arms 6-1 are located on the same side of the slider connecting plate 6-0. Further, the push rod slider 6 is cut and bent from a metal plate, or the push rod slider 6 is an integral injection molding structure.

Preferably, as shown in Figure 7-8, the slider connecting plate 6-0 is fixedly connected with the push rod locking part 3-2 through the first rivet 36, and the slider connecting plate 6-0 is provided with the first rivet 36 The sliding block passes through the hole 6-0-0, and the push rod locking part 3-2 is provided with a push rod through hole 3-2-00 for the first rivet 3 to pass through.

As shown in Figure 7-8, the housing 5 also includes a housing platform 5-5, the housing guiding and limiting structure 5-1 is arranged on the housing platform 5-5, the housing platform 5-5 and the housing 5, which is provided with the side wall of the housing opening 5-0. Further, the housing guide rail 5-1-0 is also connected to the side wall of the housing 5 provided with the housing opening 5-0.

As shown in Figs. 9-10, it is the second embodiment of the sliding and limiting cooperation between the housing guiding and limiting structure 5-1 and the push rod 3.

The housing guide limit structure 5-1 includes an upper limit structure 5-1-1 and a lower limit structure arranged at intervals, and the push rod locking part 3-2 is slidably arranged on the upper limit structure 5-1-1 and the lower limit structure. between structures.

Preferably, as shown in Fig. 8-10, the upper limit structure 5-1-1 is an upper limit plate, and the upper limit plate is arranged in parallel with the push rod locking part 3-2.

Preferably, as shown in Figure 8-10, the lower limit structure includes at least one pair of lower rail ribs 5-1-2 arranged in parallel and spaced apart, and the push rod locking part 3-2 is slidably arranged on each lower rail rib 5-1. -2, to reduce the friction between the push rod locking part 3-2 and the lower limit structure.

As shown in Figure 8-9, the lower guide rail rib 5-1-2 of the lower limit structure is arranged on the shell platform 5-5, and the shell platform 5-5 and the upper limit structure 5-1-1 are connected with the shell 5, which is provided with the side wall of the housing opening 5-0. Further, one end of the lower rail rib 5-1-2 of the lower limiting structure is also connected to the side wall of the housing 5 provided with the housing opening 5-0.

As shown in Figures 7-10, the housing 5 also includes a housing slide rail structure, the housing slide rail structure includes a housing chute 5-3, and the push rod 3 also includes a The inner push rod sliding part 3-1 is bent and connected with the push rod locking part 3-2. Further, the push rod sliding part 3-1 is a push rod sliding plate, and the plane of the push rod sliding plate is perpendicular to the plane of the push rod locking part 3-2.

As shown in Figures 7-10, the push rod 3 also includes a push rod limit arm 3-3 connected to the push rod locking part 3-2 and arranged side by side with the push rod sliding part 3-1; 5 also includes a housing limit platform 5-2 arranged between the push rod limit arm 3-3 and the push rod sliding part 3-1, the push rod limit arm 3-3 and the housing limit platform 5-2 Limit fit; when the circuit breaker is installed to the installation position of the circuit breaker and is not installed in place, if the operator performs the closing operation, the rocker arm 1 drives the push rod 3 to slide through the drive part 2 to make the push rod insert 3-2-1 Move to the outside of the housing 5, because the circuit breaker is not installed in place, the push rod insert 3-2-1 is against the housing of the circuit breaker installation position and cannot extend out of the housing 5, during this process, the push rod insert 3 -2-1 is prone to deformation (for example, the push rod locking part 3-2 is bent and/or displaced to the side where the push rod sliding part 3-1 is located), the push rod limit arm 3-3 and the housing limit platform 5 -2 cooperation, the above situation can be effectively avoided.

As shown in Fig. 7-10, the casing slide rail structure and the casing limiting platform 5-2 are both arranged on the casing platform 5-5.

As shown in Figure 2-10, the push rod 3 includes a push rod fitting part 3-0, the push rod fitting part 3-0 and the push rod locking part 3-2 are respectively connected to both ends of the push rod sliding part 3-1, The push rod matching part 3-0 is matched with the driving part 2. Further, the middle part of the push rod fitting part 3-0 is connected with the push rod sliding part 3-1, and the push rod fitting part 3-0 and the push rod sliding part 3-1 have a T-shaped structure as a whole, and one end of the push rod receiving part is The moving end 3-0-0, the other end is the mating end 3-0-1 of the mating part, the side of the driven end 3-0-0 of the mating part facing the driver 2 is the driven surface 3-0-3 of the mating part, and the mating part The matching end 3-0-1 is provided with a matching protrusion 3-0-2.

Preferably, as shown in Figure 7-10, the push rod fitting part 3-0 and the push rod sliding part 3-1 are coplanar and located in the same plane, and the plane where the push rod locking part 3-2 is located is perpendicular to the push rod sliding Section 3-1 is located in the plane.

As shown in FIG. 2-10 , the elastic return member 4 is a return spring, which is a compression spring and is arranged between the push rod 3 and the housing 5 . Further, as shown in Figures 2-5 and 7-10, the housing 5 also includes a housing spring limiting plate 5-4 connected to one end of the housing slide rail structure. Between the plate 5-4 and the push rod matching part 3-0, one end of the compression spring is sleeved on the matching part protrusion 3-0-2, and the other end is offset against the casing spring limiting plate 5-4.

As other embodiments, the elastic reset member 4 may also be a tension spring or a spring leaf.

The utility model also discloses a circuit breaker, which includes the locking structure and has good safety.

The circuit breaker of the utility model also includes an operating mechanism. The operating mechanism includes a mechanism bracket, a jumper, a lock, a crank, a connecting rod and a re-buckle. The jumper is matched with the locker and the locker is matched with the locker, and the limiter is matched with the locker. The crank is connected with the jumper rotating rod. One end of the connecting rod is connected with the crank for rotation, and the other end is connected with the moving contact of the circuit breaker for rotation. Further, the circuit breaker of the present utility model also includes a trip lever, a short circuit protection mechanism and an overload protection mechanism. When a fault occurs, the short-circuit protection mechanism or overload protection mechanism drives the trip lever to rotate, and the trip lever drives the re-catch to release the limit cooperation with the lock, so that the lock and the jumper are released from the lock, and the circuit breaker trips.

The circuit breaker of the utility model also includes connecting terminals, the connecting terminals include the incoming line connecting terminal and the outgoing line connecting terminal, both the incoming line connecting terminal and the outgoing line connecting terminal are located at the same end of the housing H, and the connecting terminal and the operating mechanism are respectively arranged on the housing H opposite ends.

The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For a person of ordinary skill in the technical field to which the utility model belongs, without departing from the concept of the utility model, some simple deduction or substitutions can also be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (12)

1. A locking structure of a circuit breaker, characterized in that it comprises a housing (5) of the circuit breaker and rocker arms (1) respectively arranged in the housing (5), fixedly arranged on the rocker arm (1) The driving part (2), the push rod (3) slidingly arranged on the housing (5) and the elastic reset part (4) matched with the push rod (3), the rocker arm (1) is rotated, and the push rod (3) ) one end is matched with the driving part (2), and the other end is the push rod locking part (3-2). The driving part (2) includes a mounting part (2-0) fixedly connected with the rocker arm (1) and a mounting part ( 2-0) connected drive part (2-1), the drive part (2-1) includes a connection section and a drive section (2-1-0), one end of the connection section is connected to the installation part (2-0), and the other end It extends in a direction away from the axis of the rocker arm (1) and is connected to the driving section (2-1-0); when the rocker arm (1) swings to the closing position, the push rod (3) is driven by the driver (2) ) to slide, so that the push rod locking part (3-2) protrudes outside the casing (5), and the elastic reset part (4) stores energy, and applies force to the push rod (3) to move it into the casing (5) force. 2. The locking structure of the circuit breaker according to claim 1, characterized in that: the driving section (2-1-0) is bent and connected to the connecting section and is parallel to the rotation axis of the rocker arm (1). 3. The locking structure of the circuit breaker according to claim 1, characterized in that: the driving section (2-1-0) is located outside one end of the rocker arm (1) for operation, and the driving section (2-1 -0) The distance from the axis of rotation of the rocker arm (1) is greater than the distance from the end of the rocker arm (1) for operation to the axis of rotation of the rocker arm (1). 4. The locking structure of the circuit breaker according to claim 1, characterized in that: the installation part (2-0) is provided with a driver installation hole (2-0-0), and the rocker arm (1) is provided with a rocker The arm installation hole, the fixing part (12) passes through the rocker arm installation hole and the driver installation hole (2-0-0) to fix the installation part (2-0) and the rocker arm (1). 5. The locking structure of the circuit breaker according to claim 4, characterized in that: the driving part (2) also includes a limiting structure of the driving part, and the limiting structure of the driving part cooperates with the rocker arm (1) to prevent the driving part from (2) Rotate relative to the rocker arm (1); the limiting structure of the driving member is a limiting arm (2-2) bent and connected to the mounting part (2-0), and the rocking arm (1) includes a first limiting position hole, and the limit arm (2-2) is inserted in the first limit hole. 6. The locking structure of the circuit breaker according to claim 1, characterized in that: the housing (5) also includes a housing guiding and limiting structure (5-1), and the housing guiding and limiting structure (5-1 ) cooperate with the push rod (3) for sliding limit, so that the push rod (3) only has the degree of freedom to slide in one direction relative to the housing (5). 7. The locking structure of the circuit breaker according to claim 6, characterized in that: the housing guiding and limiting structure (5-1) comprises housing guide rails (5-1-0), housing guide rails (5-1-0) 1-0) includes a shell guide groove arranged in the middle; The locking structure also includes a push rod slider (6) fixedly connected to the push rod (3), the push rod slider (6) includes a slider arm (6-1), and the slider arm (6-1) is slidably set in the housing channel. 8. The locking structure of the circuit breaker according to claim 6, characterized in that: the casing guide limit structure (5-1) includes an upper limit structure (5-1-1) and a lower limit structure (5-1-1) arranged at intervals relative to each other structure, the push rod locking part (3-2) is slidably arranged between the upper limit structure (5-1-1) and the lower limit structure. 9. The locking structure of the circuit breaker according to claim 8, characterized in that: the upper limit structure (5-1-1) is an upper limit plate; the lower limit structure includes at least a pair of lower Rail ribs (5-1-2). 10. The locking structure of the circuit breaker according to claim 1, characterized in that: the housing (5) further includes a housing slide rail structure, and the housing slide rail structure includes a housing slide groove (5-3), The push rod (3) also includes a push rod sliding part (3-1) which is slidably arranged in the casing slide groove (5-3) and which is bent and connected to the push rod locking part (3-2). 11. The locking structure of the circuit breaker according to claim 10, characterized in that: the push rod (3) also includes a locking part (3-2) connected to the push rod and a sliding part (3-1) connected to the push rod Push rod limit arms (3-3) arranged side by side at intervals; the housing (5) also includes a shell arranged between the push rod limit arm (3-3) and the push rod sliding part (4-1) Body limiter (5-2), push rod limiter arm (3-3) and housing limiter (5-2) limit and cooperate. 12. The locking structure of the circuit breaker according to claim 10, characterized in that: The push rod (3) includes a push rod fitting part (3-0), and the push rod fitting part (3-0) and the push rod locking part (3-2) are respectively connected with the two ends of the push rod sliding part (3-1). Connected, the push rod matching part (3-0) cooperates with the driving part (2); the housing (5) also includes a housing spring limiting plate (5-4) connected to one end of the housing slide rail structure, the The elastic reset member (4) is arranged between the housing spring limiting plate (5-4) and the push rod matching portion (3-0).

Images