Release

Abstract

The utility model relates to a release, which comprises a bottom shell and an upper cover matched with the bottom shell, a magnetic conduction structure is arranged in the bottom shell and comprises a first magnetic conduction plate and a second magnetic conduction plate, the first magnetic conduction plate and the second magnetic conduction plate are fixedly connected, one end of the first magnetic conduction plate and one end of the second magnetic conduction plate form a dovetail part, and the other end of the second magnetic conduction plate forms a dovetail part. And a permanent magnet is arranged at the position, corresponding to the dovetail part, in the bottom shell. The utility model relates to the technical field of electrical control. According to the release, the adjusting screw is rotated to enable the bending ring of the torsion spring to deflect upwards, at the moment, the transverse end of the torsion spring has downward potential energy, the position of the transverse end of the torsion spring is not changed under the influence of the armature, the pressure of the torsion spring on one end of the armature is increased, and otherwise, the pressure of the transverse end of the torsion spring on the armature is reduced; therefore, the purpose of controlling the performance parameter precision of the bounce of the armature can be achieved by rotating the adjusting screw.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical control, in particular to a release. Background Art

[0002] The release is a device that is mechanically connected to the circuit breaker and is used to release the holding mechanism and automatically disconnect the circuit breaker. Its function is that when there is leakage in the line or electric shock, the vector sum of the current passing through the zero-sequence current transformer is not equal to zero, and the two sides of the transformer secondary coil generate voltage. When the setting value is reached, the leakage release outputs sufficient tripping force in a very short time, pushing the locking mechanism of the circuit breaker to trip, thereby driving the circuit breaker to cut off the power supply, thereby playing a role in electric shock and leakage protection.

[0003] In the prior art, when the armature inside the release is usually installed by means of a tension spring or a torsion spring, the tension spring or the torsion spring cannot be adjusted to accurately set the trigger current of the release. Therefore, in actual use, the accuracy of the release is often low, and as time, temperature, and environment change, the trigger current value of the release changes and cannot be corrected. Utility Model Content

[0004] According to the shortcomings of the prior art, the action stability of the release is improved. The purpose of the utility model is to provide a release so as to solve the technical problems mentioned in the above background technology.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A release device comprises a bottom shell and an upper cover adapted to the bottom shell, wherein a magnetic conductive structure is arranged inside the bottom shell;

[0007] The magnetic conductive structure includes a first magnetic conductive plate and a second magnetic conductive plate, the first magnetic conductive plate and the second magnetic conductive plate are fixedly connected, and a dovetail portion is formed at one end, and a permanent magnet is arranged at a position corresponding to the dovetail portion inside the bottom shell;

[0008] A coil sleeve rod is provided at one end of the second magnetic conductive plate away from the dovetail portion, a transverse support rod extends from the top end of the second magnetic conductive plate, a coil frame is sleeved on the top end of the coil sleeve rod, pins are provided on both sides of the bottom end of the coil frame, a support disk is provided on the top end of the coil frame, an armature is provided inside the support disk, and the bottom end of the armature is in contact with the transverse support rod and the top end of the coil sleeve rod;

[0009] The support plate is provided with mounting shafts on both sides of one end away from the coil frame, and the two mounting shafts are jointly sleeved with a torsion spring, and both ends of the torsion spring are provided with bending rings, and the upper end of the armature has a positioning groove for positioning the lateral end of the torsion spring, and the bottom ends of both sides of the support plate are rotatably provided with adjusting screws, and the bending rings are clamped in the threaded grooves of the adjusting screws;

[0010] A pin hole is provided at a position on the top of the upper cover corresponding to the coil sleeve rod, and a push rod is slidably arranged inside the pin hole.

[0011] Furthermore, a frame for positioning the magnetic conductive structure is disposed inside the bottom shell.

[0012] Furthermore, an electromagnetic coil is provided in the gap between the coil sleeve rod and the coil frame support, and two ends of the electromagnetic coil are fixedly connected to the two pins respectively.

[0013] Furthermore, the outer side surface of the connection between the second magnetic conductive plate and the transverse support rod is arranged at a right angle.

[0014] Furthermore, the outer side surface of the bend where the first magnetic conductive plate and the second magnetic conductive plate form the dovetail portion is set to be non-rounded or slightly rounded.

[0015] In summary, the present invention includes at least one of the following beneficial technical effects:

[0016] 1. This release, by turning the adjusting screw, causes the bending ring of the torsion spring to deflect upward. At this time, the lateral end of the torsion spring has downward potential energy. Affected by the armature, the lateral end position of the torsion spring remains unchanged, so the pressure of the torsion spring on one end of the armature increases, and conversely, the pressure of the lateral end of the torsion spring on the armature decreases. Therefore, the purpose of controlling the performance parameter accuracy of the armature pop-up can be achieved by turning the adjusting screw;

[0017] 2. This release, through the transverse support rod arranged at a right angle on the outer side surface, increases the connection area between the transverse support rod and the second magnetic conductive plate relative to the non-right angle surface, thereby achieving the purpose of improving the strength of the transverse support rod, and increases the upper surface of the transverse support rod relative to the non-right angle area, so that when the armature is deflected by the transverse support rod under the pressure of the torsion spring, the armature stability can be improved;

[0018] 3. In this type of release, since the first magnetic conductive plate and the second magnetic conductive plate are both integrally formed, and when the bend is set to be non-circular or slightly rounded, the width of the bend can be equal to the width of the rest of the first magnetic conductive plate and the second magnetic conductive plate, so as to avoid the problem of changes in the internal magnetic resistance of the first magnetic conductive plate and the second magnetic conductive plate, which affects the stability of the release. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 The utility model is a schematic diagram of the structure of a release.

[0021] Figure 2 The utility model is a structural explosion diagram of a release.

[0022] Figure 3 The utility model is a schematic structural diagram of a coil skeleton and a support plate of a release.

[0023] Figure 4 The utility model is a schematic structural diagram of a magnetic conductive structure of a release.

[0024] Figure 5 The utility model is a schematic diagram of the structure of a torsion spring of a release.

[0025] Figure 6 The utility model is a schematic diagram of the connection structure of a torsion spring and an adjusting screw of a release.

[0026] In the figure, 1, bottom shell; 2, upper cover; 3, magnetic conductive structure; 301, first magnetic conductive plate; 302, second magnetic conductive plate; 3021, coil sleeve rod; 3022, horizontal support rod; 303, dovetail; 4, permanent magnet; 5, coil skeleton; 6, pin; 7, support plate; 8, armature; 81, positioning groove; 9, mounting shaft; 10, torsion spring; 1001, bending ring; 1002, horizontal end; 11, adjusting screw; 12, pin hole; 13, push rod; 14, frame. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] Example:

[0029] Reference Figure 1-Figure 6 The utility model discloses a release device, comprising a bottom shell 1 and an upper cover 2 adapted to the bottom shell 1, wherein a magnetic conductive structure 3 is arranged inside the bottom shell 1;

[0030] The magnetic conductive structure 3 includes a first magnetic conductive plate 301 and a second magnetic conductive plate 302, the first magnetic conductive plate 301 and the second magnetic conductive plate 302 are fixedly connected, and a dovetail portion 303 is formed at one end, and a permanent magnet 4 is arranged at a position corresponding to the dovetail portion 303 inside the bottom shell 1;

[0031] A coil sleeve rod 3021 is provided at one end of the second magnetic conductive plate 302 away from the dovetail portion 303, a transverse support rod 3022 extends from the top of the second magnetic conductive plate 302, a coil skeleton 5 is sleeved on the top of the coil sleeve rod 3021, pins 6 are provided on both sides of the bottom of the coil skeleton 5, a support plate 7 is provided on the top of the coil skeleton 5, an armature 8 is provided inside the support plate 7, and the bottom end of the armature 8 is in contact with the transverse support rod 3022 and the top of the coil sleeve rod 3021;

[0032] The support plate 7 is provided with mounting shafts 9 on both sides of one end away from the coil frame 5, and the two mounting shafts 9 are jointly sleeved with a torsion spring 10, and both ends of the torsion spring 10 are provided with bending rings 1001, and the upper end of the armature 8 is provided with a positioning groove 81 for positioning the lateral end 1002 of the torsion spring 10, and the bottom ends of both sides of the support plate 7 are rotatably provided with adjusting screws 11, and the bending rings 1001 are stuck in the threaded grooves of the adjusting screws 11;

[0033] A pin hole 12 is provided at a position on the top of the upper cover 2 corresponding to the coil sleeve rod 3021 , and a push rod 13 is slidably provided inside the pin hole 12 .

[0034] In this embodiment, when the device is assembled, the magnetic conductive structure 3 is inserted into the bottom shell 1, and then the electromagnetic coil is inserted into the coil frame 5, and the two ends of the electromagnetic coil are respectively connected to the two pins 6, and then the electromagnetic coil is sleeved on the outer wall of the coil sleeve rod 3021, so that the bottom end of the coil frame 5 is in contact with the magnetic conductive structure 3, and at the same time, the top protrusion of the first magnetic conductive plate 301 is inserted into the inside of the support plate, and the two sides of the bottom end of the coil frame 5 and the two sides of the support plate correspond to the inner side wall of the bottom shell 1, thereby achieving the purpose of fixing the magnetic conductive structure 3, and a positioning hole is opened at the top of the support plate at a position corresponding to the coil frame 5, and the top of the coil sleeve rod 3021 is inserted into the inside of the positioning hole and protrudes;

[0035] The armature 8 is installed inside the support plate 7, and the bottom end is in contact with the transverse support rod 3022 and the top end of the coil sleeve rod 3021. The positioning groove 81 is used to position the transverse end 1002 of the torsion spring 10, and the bending rings 1001 on both sides of the torsion spring 10 are sleeved on the outer wall of the adjusting screw 11 and are clamped in the threaded groove.

[0036] By rotating the adjusting screw 11, the bending ring 1001 of the torsion spring 10 moves along the thread, so that the torsion spring 10 rotates around the mounting shaft 9 to adjust the pressure of the torsion spring 10 on the armature 8;

[0037] Specifically, the adjusting screw 11 is rotated to deflect the bending ring 1001 of the torsion spring 10 upward. At this time, the lateral end 1002 of the torsion spring 10 has downward potential energy. Affected by the armature 8, the position of the lateral end 1002 of the torsion spring 10 remains unchanged. Therefore, the pressure of the torsion spring 10 on one end of the armature 8 increases, and conversely, the pressure of the lateral end 1002 of the torsion spring 10 on the armature 8 decreases. Therefore, the purpose of controlling the accuracy of the performance parameters of the armature 8 popping up can be achieved by rotating the adjusting screw 11.

[0038] In a further preferred embodiment of the present invention, Figure 1-6 As shown, a frame 14 for positioning the magnetic conductive structure 3 is disposed inside the bottom shell 1 .

[0039] In this embodiment, the frame 14 is provided to improve the stability of the magnetic conductive structure 3 and facilitate the installation of the permanent magnet 4 .

[0040] In a further preferred embodiment of the present invention, Figure 1-6 As shown, an electromagnetic coil is disposed in the gap between the coil sleeve rod 3021 and the coil frame 5 bracket, and two ends of the electromagnetic coil are fixedly connected to the two pins 6 respectively.

[0041] In this embodiment, the magnetic field force generated by the current passing through the electromagnetic coil is used to work. When the current is large enough, the polarity of the magnetic field generated is the same as the polarity of the magnetic field of the permanent magnet. When the magnetic field forces are offset, the front end of the armature 8 is bounced open by the torsion spring 10, thereby pushing the ejector to trigger the action of the release and cut off the circuit.

[0042] In a further preferred embodiment of the present invention, Figure 1-6 As shown, the outer side surface of the bending part of the second magnetic conductive plate 302 and the transverse support rod 3022 is arranged at a right angle.

[0043] In this embodiment, by setting the transverse support rod 3022 at a right angle, the connection area between the transverse support rod 3022 and the second magnetic conductive plate 302 is increased relative to the non-right angle, thereby achieving the purpose of improving the strength of the transverse support rod 3022, and the upper surface of the transverse support rod 3022 is increased relative to the non-right angle area. When the armature 8 is subjected to the pressure of the torsion spring 10 to deflect the transverse support rod 3022, the stability of the armature 8 can be improved.

[0044] In a further preferred embodiment of the present invention, Figure 1-6 As shown, the outer side surface of the bend where the first magnetic conductive plate 301 and the second magnetic conductive plate 302 form the dovetail portion 303 is provided with a non-rounded or slightly rounded corner.

[0045] In the present embodiment, by setting the bending part without round or with slight rounded corners, since the first magnetic conductive plate 301 and the second magnetic conductive plate 302 are both integrally formed, when the bending part is set to be rounded, the width of the bending part can be equal to the width of the rest of the first magnetic conductive plate 301 and the second magnetic conductive plate 302, so as to avoid the problem of changes in the internal magnetic resistance of the first magnetic conductive plate 301 and the second magnetic conductive plate 302, which affects the stability of the releaser.

[0046] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A trip device, characterized in that: It comprises a bottom shell (1) and an upper cover (2) adapted to the bottom shell (1), wherein a magnetic conductive structure (3) is arranged inside the bottom shell (1); The magnetic conductive structure (3) comprises a first magnetic conductive plate (301) and a second magnetic conductive plate (302), wherein the first magnetic conductive plate (301) and the second magnetic conductive plate (302) are fixedly connected and a dovetail portion (303) is formed at one end, and a permanent magnet (4) is arranged at a position inside the bottom shell (1) corresponding to the dovetail portion (303); A coil sleeve rod (3021) is provided at one end of the second magnetic conductive plate (302) away from the dovetail portion (303); a transverse support rod (3022) extends from the top end of the second magnetic conductive plate (302); a coil frame (5) is sleeved on the top end of the coil sleeve rod (3021); pins (6) are provided on both sides of the bottom end of the coil frame (5); a support plate (7) is provided at the top end of the coil frame (5); an armature (8) is provided inside the support plate (7); the bottom end of the armature (8) is in contact with the transverse support rod (3022) and the top end of the coil sleeve rod (3021); The support plate (7) is provided with mounting shafts (9) on both sides of one end away from the coil frame (5), and the two mounting shafts (9) are jointly sleeved with a torsion spring (10), and both ends of the torsion spring (10) are provided with bending rings (1001), and the upper end of the armature (8) is provided with a positioning groove (81) for positioning the lateral end (1002) of the torsion spring (10), and the bottom ends of both sides of the support plate (7) are rotatably provided with adjustment screws (11), and the bending rings (1001) are clamped in the threaded grooves of the adjustment screws (11); A pin hole (12) is provided at a position on the top end of the upper cover (2) corresponding to the coil sleeve rod (3021), and a push rod (13) is slidably arranged inside the pin hole (12).

2. A release according to claim 1, characterized in that: A frame (14) for positioning the magnetic conductive structure (3) is arranged inside the bottom shell (1).

3. A release according to claim 2, characterized in that: An electromagnetic coil is disposed in the gap between the coil sleeve rod (3021) and the coil frame (5) bracket, and two ends of the electromagnetic coil are respectively fixedly connected to the two pins (6).

4. A release according to claim 3, characterized in that: The outer side surfaces of the bending parts of the second magnetic conductive plate (302) and the transverse support rod (3022) are arranged at right angles.

5. A release according to claim 4, characterized in that: The outer side surface of the bend where the first magnetic conductive plate (301) and the second magnetic conductive plate (302) form the dovetail portion (303) is arranged to have no rounded corners or a slight rounded corner.

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