CN216597471U

CN216597471U - Tripping device

Info

Publication number: CN216597471U
Application number: CN202123218218.9U
Authority: CN
Inventors: 李文杰; 李文俊; 李文伟
Original assignee: Dalian Ino Tech Co Ltd
Current assignee: Dalian Ino Tech Co Ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-05-24
Anticipated expiration: 2031-12-20

Abstract

The utility model provides a release, which comprises a sheath, a magnetic yoke, a release coil and a short circuit coil, and also comprises a release push rod, a first movable iron core, a second movable iron core and a static iron core which are positioned in the sheath, two ends of the first movable iron core are respectively propped against the end part of the sheath and one end of the tripping push rod, one end of the second movable iron core facing the magnet yoke is provided with a limit groove corresponding to the axial direction of the tripping push rod, the outer wall of the tripping push rod is provided with a limiting step which is propped against the inner end of the limiting groove, the tripping push rod is sleeved with a first pressure spring with one end positioned in the limiting groove, the static iron core is sleeved on the tripping push rod and is abutted against the other end of the first pressure spring, the static iron core is provided with a mounting hole and a connecting hole which is coaxially arranged with the mounting hole and is used for the tripping push rod to pass through towards the axial direction of one end of the second movable iron core relative to the tripping push rod, and a fixed step is formed at the connecting position of the mounting hole and the connecting hole. The utility model has small volume, low production cost and convenient processing and assembly.

Description

Tripping device

Technical Field

The utility model relates to the technical field of residual current circuit breakers, in particular to a release.

Background

The existing application numbers are: CN201621368943.0, chinese patent with patent name "an electromagnetic system" discloses "an electromagnetic system, which includes instantaneous trip coil, electric leakage trip coil, coil frame, ejector pin, magnet yoke, static contact, its characteristic is: coil skeleton in from left to right set gradually electric leakage iron core, electric leakage ejector pin, electric leakage iron core spring, move iron core, iron core spring, quiet iron core, ejector pin, the ejector pin be close to electric leakage ejector pin one side and be provided with the recess, move the iron core and be formed with first through-hole, quiet iron core be formed with the second through-hole, one side and the electric leakage iron core contact of electric leakage ejector pin, the other end pass and move the first through-hole of iron core and insert the recess of ejector pin in, the ejector pin insert the second through-hole of quiet iron core, electric leakage iron core spring winding is on electric leakage ejector pin, iron core spring winding is on the ejector pin. The leakage ejector rod and the ejector rod are arranged in a split mode, so that the leakage ejector rod is inconvenient to produce, process and install, and the assembly efficiency is reduced.

The existing application numbers are: CN201620312471.0, chinese patent entitled "auxiliary trip device of electrical protection device" discloses "an auxiliary trip device of electrical protection device, said auxiliary trip device includes plastic supporting sheath (9), characterized in that: a first concave wheel groove (1) and a second concave wheel groove (2) are formed in the outer side of the sheath (9), a first trip coil (3) is wound in the first concave wheel groove (1), a first iron core (4) capable of sliding is movably placed on the inner side of the first concave wheel groove (1), the first iron core (4) abuts against a push rod (7), and the push rod (7) penetrates through the first concave wheel groove (1) to be connected with a second iron core (5) capable of sliding and arranged on the inner side of the joint of the first concave wheel groove (1); a blocking step (8) is arranged below the joint of the first concave wheel groove (1) and the second concave wheel groove (2), the second iron core (5) is blocked by the blocking step (8) to move in a sheath (9) below the second concave wheel groove (2), a push rod blocking step (10) is arranged at the joint of the push rod (7) penetrating through the second iron core (5), a push rod part on one surface of the push rod blocking step (10) is sleeved with a voltage coil push spring (11) and then penetrates and stands outside the third iron core (6), and a pressure spring (12) is sleeved outside the second iron core (5) and the third iron core (6); the magnetic yoke (13) is sleeved outside the concave wheel groove (2), the short circuit coil (14) "is wound inside the magnetic yoke (13), the push rod (7) in the patent is the state of the electric leakage ejector rod and the ejector rod which are integrally formed in the patent, the technical problem generated in the production, processing and installation of the electric leakage ejector rod and the ejector rod is well solved, but the pressure spring (12) in the patent is sleeved on the second iron core (5) and the third iron core (6), so that the size and the length of the pressure spring (12) and the plastic supporting sheath are larger, the size of the auxiliary tripping device is larger, the integral size of the circuit breaker is further influenced, and the production cost of the circuit breaker is increased.

SUMMERY OF THE UTILITY MODEL

Based on the above problems, the present invention provides a trip device with small volume, low production cost and convenient production, processing and installation.

Aiming at the problems, the following technical scheme is provided: the utility model provides a tripper, includes sheath, yoke, trip coil and short circuit coil, still includes the trip push rod that is located the sheath, first iron core, second are moved iron core and quiet iron core, first iron core, second are moved iron core and are moved toward resetting relatively trip push rod axial direction, first iron core both ends of moving offset with sheath tip and trip push rod one end respectively, the second moves the iron core cover and locates on the trip push rod, the second moves the iron core and has seted up the spacing groove towards the relative trip push rod axial direction of one end of yoke, be equipped with the spacing step that offsets with the spacing groove inner on the outer wall of trip push rod, the cover is equipped with the first pressure spring that one end is located the spacing groove on the trip push rod, quiet iron core cover is located on the trip push rod and is offset with the first pressure spring other end, quiet iron core moves the relative trip push rod's of one end of iron core axial direction and has seted up the mounting hole and has been used for the push rod dropout to pass coaxial arrangement with the mounting hole and be used for the push rod dropout to pass The connecting hole of (2), the junction of mounting hole and connecting hole forms fixed step, the one end that the dropout push rod passed the connecting hole is seted up towards the other end and is located the card fender step in the mounting hole, the cover is equipped with second pressure spring on the dropout push rod, second pressure spring both ends respectively with fixed step and card fender step counterbalance.

In the structure, under the condition that the compression ratio is not changed, the second pressure spring is sleeved on the tripping push rod and is arranged in the mounting hole of the static iron core, and compared with the prior art that the second pressure spring is sleeved outside the iron core, the volume of the second pressure spring can be greatly reduced, so that the volume of the sheath can be reduced, the volume of the tripper is further reduced, the volume of the circuit breaker adopting the tripping device can be reduced, and the production cost is reduced. The second pressure spring is arranged in the mounting hole of the static iron core, so that the compactness of the structure among all parts can be improved, and the tripping stability of the utility model can be improved. The second pressure spring is sleeved on the tripping push rod, so that the arrangement of steps on the outer circumferential wall of the second movable iron core and the outer circumferential wall of the static iron core can be reduced, the second movable iron core and the static iron core are convenient to produce and process, and the convenience of production, processing and assembly is improved.

The utility model is further provided that a positioning step is arranged from the limit step to the blocking step on the upper edge of the tripping push rod.

By adopting the structure, a user can conveniently identify the installation direction, so that the positioning and installation of the tripping push rod can be facilitated, and the convenience of the utility model is improved.

The utility model is further arranged in such a way that the inner end of the sheath is provided with a positioning groove matched with the first movable iron core, and the first movable iron core is positioned in the positioning groove and can reciprocate and axially move relative to the tripping push rod.

By adopting the structure, the first movable iron core can be conveniently positioned and installed, and the first movable iron core can be subjected to limiting sliding through the positioning groove, so that the stability of the first movable iron core during sliding is improved.

The utility model is further provided that one end of the second movable iron core is provided with a limiting part which extends towards the positioning groove.

By adopting the structure, the second movable iron core can be limited, so that the stability of the second movable iron core is improved, and the reliability of the utility model is improved.

Drawings

Fig. 1 is a schematic structural diagram of a first view angle according to the present invention.

FIG. 2 is a schematic diagram of a second perspective view of the present invention.

Fig. 3 is a schematic cross-sectional structure of the present invention.

Fig. 4 is a schematic view of a disassembled structure inside the sheath of the present invention.

Fig. 5 is a schematic structural view of the trip push rod of the present invention.

The reference numbers in the figures mean: 1-a sheath; 2-a magnetic yoke; 3-a trip coil; 4-short circuit coil; 5, tripping a push rod; 6-a first movable iron core; 7-a second movable iron core; 8-a stationary iron core; 71-a limiting groove; 51-a limit step; 52-a first pressure spring; 81-mounting holes; 82-connecting hole; 83-fixed step; 53-catch step; 54-a second pressure spring; 55-positioning step; 11-a positioning groove; 71-a limiting part.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, back, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

The release as shown in fig. 1 to 5 comprises a sheath 1, a magnetic yoke 2, a trip coil 3, a short circuit coil 4, and a trip push rod 5, a first movable iron core 6, a second movable iron core 7, and a stationary iron core 8, which are located in the sheath 1, wherein the first movable iron core 6 and the second movable iron core 7 can reciprocate relative to the axial direction of the trip push rod 5, two ends of the first movable iron core 6 respectively abut against an end of the sheath 1 and one end of the trip push rod 5, the second movable iron core 7 is sleeved on the trip push rod 5, one end of the second movable iron core 7 facing the magnetic yoke 2 is provided with a limit groove 71 relative to the axial direction of the trip push rod 5, the outer wall of the trip push rod 5 is provided with a limit step 51 abutting against an inner end of the limit groove 71, the trip push rod 5 is sleeved with a first pressure spring 52 having one end located in the limit groove 71, the stationary iron core 8 is sleeved on the trip push rod 5 and abuts against the other end of the first pressure spring 52, the fixed iron core 8 has seted up mounting hole 81 towards the relative trip push rod 5's of the one end of second movable iron core 7 axial direction and has just been used for the connecting hole 82 that trip push rod 5 passed with the coaxial setting of mounting hole 81, the junction of mounting hole 81 and connecting hole 82 forms fixed step 83, the one end that trip push rod 5 passed connecting hole 82 is seted up towards the other end and is located the card that mounting hole 81 keeps off step 53, the cover is equipped with second pressure spring 54 on the trip push rod 5, second pressure spring 54 both ends offset with fixed step 83 and card fender step 53 respectively.

In the above structure, in a state that the compression ratio is not changed, the second pressure spring 54 is sleeved on the trip push rod 5 and is installed in the installation hole 81 of the stationary iron core 8, compared with the prior art in which the second pressure spring 54 is sleeved outside the iron core, the volume of the second pressure spring 54 can be greatly reduced, so that the volume of the sheath 1 can be reduced, the volume of the trip device can be further reduced, the volume of the circuit breaker adopting the trip device can be reduced, and the production cost can be reduced. In the utility model, the second pressure spring 54 is arranged in the mounting hole 81 of the static iron core 8, so that the structure compactness among all parts can be improved, and the tripping stability of the utility model can be improved. The second pressure spring 54 is sleeved on the tripping push rod 5, so that the arrangement of steps on the outer circumferential walls of the second movable iron core 7 and the static iron core 8 can be reduced, the production and the processing of the second movable iron core 7 and the static iron core 8 are facilitated, and the convenience of the production, the processing and the assembly of the utility model is improved.

In this embodiment, the upper edge of the trip push rod 5 from the limit step 51 to the blocking step 53 is provided with a positioning step 55.

By adopting the structure, the installation direction can be conveniently identified by a user, so that the positioning and installation of the tripping push rod 5 can be conveniently realized, and the convenience of the utility model is improved.

In this embodiment, the inner end of the sheath 1 is provided with a positioning groove 11 adapted to the first movable iron core 6, and the first movable iron core 6 is located in the positioning groove 11 and can axially move in a reciprocating manner relative to the trip push rod 5.

Adopt above-mentioned structure, can be convenient for first movable iron core 6's location installation, and can carry out spacing slip through constant head tank 11 to first movable iron core 6 to the stability when first movable iron core 6 slides has been improved.

In this embodiment, one end of the second movable iron core 7 is provided with a limiting portion 71 extending toward the positioning groove 11.

By adopting the structure, the second movable iron core 7 can be limited, so that the stability of the second movable iron core 7 is improved, and the reliability of the utility model is improved.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and those modifications and variations assumed in the above are also considered to be within the protective scope of the present invention.

Claims

1. The utility model provides a release, includes sheath, yoke, trip coil and short circuit coil, its characterized in that: the magnetic circuit breaker further comprises a tripping push rod, a first movable iron core, a second movable iron core and a static iron core which are positioned in the sheath, wherein the first movable iron core and the second movable iron core can move towards the axial direction of the tripping push rod in a resetting way relative to the axial direction of the tripping push rod, the two ends of the first movable iron core are respectively abutted against the end part of the sheath and one end of the tripping push rod, the second movable iron core is sleeved on the tripping push rod, one end of the second movable iron core, facing the magnetic yoke, is provided with a limit groove relative to the axial direction of the tripping push rod, the outer wall of the tripping push rod is provided with a limit step abutted against the inner end of the limit groove, the tripping push rod is sleeved with a first pressure spring with one end positioned in the limit groove, the static iron core is sleeved on the tripping push rod and abutted against the other end of the first pressure spring, one end of the static iron core, facing the second movable iron core, is provided with a mounting hole and a connecting hole which is coaxial with the mounting hole and is used for the tripping push rod to pass through, the connecting part of the mounting hole and the connecting hole forms a fixed step, the tripping push rod penetrates through one end of the connecting hole and is provided with a blocking step located in the mounting hole towards the other end, a second pressure spring is sleeved on the tripping push rod, and two ends of the second pressure spring are respectively abutted against the fixed step and the blocking step.

2. A trip unit as claimed in claim 1, wherein: and a positioning step is arranged from the limit step to the blocking step on the upper edge of the tripping push rod.

3. A trip unit as claimed in claim 1, wherein: the inner end of the sheath is provided with a positioning groove matched with the first movable iron core, and the first movable iron core is positioned in the positioning groove and can move axially in a reciprocating mode relative to the tripping push rod.

4. A trip unit as claimed in claim 3, wherein: one end of the second movable iron core is provided with a limiting part extending towards the positioning groove.