Load switch structure used in electricity meter

Abstract

The invention relates to a load switch structure used in an electricity meter, and belongs to the technical field of electronic control devices. The electromagnetic relay comprises a base, a cover plate, a static reed, a coil framework, yokes, a supporting frame, a magnetic steel combination, a movable contact system, a torsion push rod and a connecting hook, the base is matched with the cover plate, the yokes are connected to the two ends of the coil framework, the magnetic steel combination makes contact with the yokes, the coil framework and the magnetic steel combination are fixed to the base, the static reed is arranged on the base, and the supporting frame is arranged on the supporting frame. The supporting frame is connected with the base, the movable contact system is matched with the static reed, and the movable contact system is movably arranged on the base; a magnetic steel push handle piece is arranged on the magnetic steel combination, one end of the connecting hook is matched with the torsion push rod, and the other end of the connecting hook is matched with the magnetic steel push handle piece. The magnetic circuit breaker is reasonable in structural design, safe and reliable, reduces magnetic circuit holding force, improves elastic stability of the elastic piece, is convenient to install, and meets use requirements.

Description

Technical Field

[0001] The invention relates to a switch structure, in particular to a load switch structure used in an electric meter, and belongs to the technical field of electronic control devices. Background Art

[0002] A relay is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] In the prior art, the magnetic steel assembly and the dynamic spring assembly are directly connected through a strip push rod and a groove on the magnetic steel. Since the contact gap is enlarged, a larger magnetic circuit holding force is required.

[0004] A Chinese patent with a publication date of July 2, 2024 and a publication number of CN118280781A discloses an invention patent entitled "A large gap load switch and its working method". In the patent's movable contact assembly, the contact spring is provided with eight legs, and the auxiliary spring is riveted to the magnetic ring. The above-mentioned disadvantages are that the elastic force of the spring is unstable, the installation process is cumbersome, and it cannot meet the existing needs. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a load switch structure for an electric meter which has a reasonable structural design, is safe and reliable, reduces the magnetic circuit holding force, increases the elastic stability of the spring, and is easy to install.

[0006] The technical solution adopted by the present invention to solve the above-mentioned problem is: the load switch structure used in the electric meter includes a base, a cover plate, a static spring sheet, a coil frame, a yoke, a support frame and a magnetic steel combination, the base and the cover plate match each other, both ends of the coil frame are connected with yokes, the magnetic steel combination is in contact with the yoke, the coil frame and the magnetic steel combination are fixed on the base, the static spring sheet is arranged on the base, and the support frame is connected to the base, characterized in that: it also includes a moving contact system, a torque push rod and a connecting hook, the moving contact system matches the static spring sheet, and the moving contact system is movably arranged on the base; a magnetic steel push handle is arranged on the magnetic steel combination, and a connecting hook is provided. One end of the hook cooperates with the torsion push rod, and the other end of the connecting hook cooperates with the magnetic steel push handle; the moving contact system includes a moving spring base, a moving spring sheet, a contact spring sheet, a moving spring clamp, a magnetic short-circuit ring and a contact pressure spring, the contact spring sheet is installed on the moving spring base, and the moving spring sheet is provided with a magnetic short-circuit ring, one end of the contact pressure spring is in contact with the moving spring base, and the other end of the contact pressure spring is connected to the magnetic short-circuit ring, and the moving spring sheet is connected to the moving spring base through the moving spring clamp; the contact spring sheet is provided with eight contact pressure spring sheets and four reaction force spring sheets, the eight contact pressure spring sheets are all in contact with the moving spring sheet, and the four reaction force spring sheets are respectively matched with the moving contacts of the moving spring sheet.

[0007] Preferably, the present invention further comprises a baffle, and the base is provided with a baffle to increase the electrical gap between the two static spring sheets.

[0008] Preferably, the present invention also includes a magnetic short circuit piece assembly, which is mounted on a base and is in contact with a magnetic short circuit ring; the magnetic short circuit piece assembly simulates a short circuit state under specific conditions to test and diagnose circuit performance.

[0009] Preferably, the support frame of the present invention is provided with a torque push rod matching hole, a magnetic steel matching hole and a dynamic spring base groove, the top of the torque push rod matches the torque push rod matching hole, the top of the magnetic steel combination matches the magnetic steel matching hole, and the dynamic spring base matches the dynamic spring base groove.

[0010] Preferably, the magnetic steel push handle member of the present invention is integrated with the magnetic steel assembly.

[0011] Preferably, the present invention further comprises a shielding cover, which is arranged outside the base.

[0012] Compared with the prior art, the present invention has the following advantages and effects: (1) The overall structural design is reasonable, safe and reliable. Eight contact pressure springs and four reaction force springs are arranged on the contact springs of the moving contact system, which increases the elastic force stability; (2) Two contact pressure springs are arranged on the moving contact system. Compared with the original riveting method, the springs are more stable and easier to install; (3) Through the amplification effect of the four-bar linkage force, the magnetic circuit holding force can be reduced and the coil power consumption can be reduced; (4) A support frame is used to replace the guide rail and the shaft fixing plate in the original device, so that the overall structure is simpler and more reasonable to meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall top view structure of an embodiment of the present invention.

[0014] Figure 2 It is a schematic diagram of the overall three-dimensional structure of an embodiment of the present invention.

[0015] Figure 3 It is a schematic diagram of the structure of an embodiment of the present invention after removing the cover plate and the shielding cover.

[0016] Figure 4 yes Figure 3 Schematic diagram of the structure after removing the support frame.

[0017] Figure 5 It is a structural schematic diagram of the embodiment of the present invention in which the load switch is disconnected after the cover plate and the shielding cover are removed.

[0018] Figure 6 yes Figure 5 Schematic diagram of the structure after removing the support frame.

[0019] Figure 7 Schematic diagram of the split structure of the moving contact system in an embodiment of the present invention.

[0020] Figure 8 It is a schematic diagram of the main structure of the moving contact system in an embodiment of the present invention.

[0021] Fig. 9 It is a schematic diagram of the three-dimensional structure of the moving contact system in an embodiment of the present invention.

[0022] In the figure: base 1, moving contact system 2, static spring 3, magnetic short-circuit piece assembly 4, coil skeleton 5, yoke 6, torque push rod 7, connecting hook 8, support frame 9, magnetic steel combination 10, shielding cover 11, cover plate 12; moving spring base 21, moving spring 22, contact spring 23, moving spring clamp 24, magnetic short-circuit ring 25, contact pressure spring 26, contact pressure spring 231, reaction spring 232; baffle 1-1, torque push rod matching hole 91, magnetic steel matching hole 92, moving spring base groove 93, magnetic steel push handle 101. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0024] Example

[0025] See also Figures 1 to 9 The load switch structure used in the electric meter in this embodiment includes a base 1, a moving contact system 2, a static reed 3, a magnetic short-circuit sheet assembly 4, a coil skeleton 5, a yoke 6, a torque push rod 7, a connecting hook 8, a support frame 9, a magnetic steel combination 10, a shielding cover 11 and a cover plate 12. The base 1 and the cover plate 12 match each other, both ends of the coil skeleton 5 are connected to the yoke 6, the magnetic steel combination 10 is in contact with the yoke 6, the coil skeleton 5 and the magnetic steel combination 10 are fixed on the base 1, the static reed 3 is arranged on the base 1, the support frame 9 is connected to the base 1, the moving contact system 2 matches the static reed 3, and the moving contact system 2 is movably arranged on the base 1.

[0026] In this embodiment, a magnetic steel push handle 101 is provided on the magnetic steel assembly 10 , one end of the connecting hook 8 cooperates with the torque push rod 7 , and the other end of the connecting hook 8 cooperates with the magnetic steel push handle 101 .

[0027] In this embodiment, the moving contact system 2 includes a moving spring base 21, a moving spring piece 22, a contact spring 23, a moving spring clamp 24, a magnetic short-circuit ring 25 and a contact pressure spring 26. The contact spring 23 is installed on the moving spring base 21, and the moving spring piece 22 is provided with a magnetic short-circuit ring 25. One end of the contact pressure spring 26 is in contact with the moving spring base 21, and the other end of the contact pressure spring 26 is connected to the magnetic short-circuit ring 25. The moving spring piece 22 is connected to the moving spring base 21 through the moving spring clamp 24.

[0028] In this embodiment, the contact spring piece 23 is provided with eight contact pressure spring pieces 231 and four reaction force spring pieces 232 . The eight contact pressure spring pieces 231 are all in contact with the movable spring piece 22 , and the four reaction force spring pieces 232 are matched with the movable contacts of the movable spring piece 22 .

[0029] In this embodiment, the magnetic short-circuit piece assembly 4 is installed on the base 1, and the magnetic short-circuit piece assembly 4 is in contact with the magnetic short-circuit ring; the magnetic short-circuit piece assembly 4 simulates a short-circuit state under specific conditions to test and diagnose circuit performance.

[0030] In this embodiment, a baffle 1 - 1 is provided on the base 1 to increase the electrical gap between the two static spring sheets.

[0031] In this embodiment, the support frame 9 is provided with a torque push rod matching hole 91, a magnetic steel matching hole 92 and a dynamic spring base groove 93. The top of the torque push rod 7 matches with the torque push rod matching hole 91, the top of the magnetic steel assembly 10 matches with the magnetic steel matching hole 92, and the dynamic spring base 21 matches with the dynamic spring base groove 93.

[0032] In this embodiment, the magnetic steel push handle 101 is connected to the magnetic steel assembly 10 as a whole.

[0033] In this embodiment, the shielding cover 11 is arranged outside the base 1; the coil frame 5 adopts an I-shaped frame, which can be selected according to actual conditions.

[0034] Through the above description, those skilled in the art can already implement it.

[0035] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the present invention. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Technicians in the technical field to which the present invention belongs can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A load switch structure for an electric meter, comprising a base (1), a cover plate (12), a static spring (3), a coil frame (5), a yoke (6), a support frame (9) and a magnetic steel assembly (10), wherein the base (1) and the cover plate (12) match each other, both ends of the coil frame (5) are connected to the yoke (6), the magnetic steel assembly (10) is in contact with the yoke (6), the coil frame (5) and the magnetic steel assembly (10) are fixed on the base (1), the static spring (3) is arranged on the base (1), and the support frame (9) is connected to the base (1), characterized in that: It also comprises a moving contact system (2), a torsion push rod (7) and a connecting hook (8), wherein the moving contact system (2) matches the static spring sheet (3), and the moving contact system (2) is movably arranged on the base (1); a magnetic steel push handle (101) is arranged on the magnetic steel assembly (10), one end of the connecting hook (8) matches the torsion push rod (7), and the other end of the connecting hook (8) matches the magnetic steel push handle (101); the moving contact system (2) comprises a moving spring base (21), a moving spring sheet (22), a contact spring sheet (23), a moving spring clamp (24), a magnetic short-circuit ring (25) and a contact pressure spring (26), and the contact spring sheet (21) is provided with a magnetic steel push handle (101). 23) is installed on the moving spring base (21), a magnetic short-circuit ring (25) is arranged on the moving spring piece (22), one end of the contact pressure spring (26) contacts the moving spring base (21), the other end of the contact pressure spring (26) is connected to the magnetic short-circuit ring (25), and the moving spring piece (22) is connected to the moving spring base (21) through a moving spring clamp (24); the contact spring piece (23) is provided with eight contact pressure spring pieces (231) and four reaction force spring pieces (232), the eight contact pressure spring pieces (231) are all in contact with the moving spring piece (22), and the four reaction force spring pieces (232) are respectively matched with the moving contacts of the moving spring piece (22).

2. The load switch structure for an electric meter according to claim 1, characterized in that: It also comprises a baffle (1-1), and the baffle (1-1) is arranged on the base (1).

3. The load switch structure for an electric meter according to claim 1, characterized in that: It also comprises a magnetic short-circuit piece assembly (4), wherein the magnetic short-circuit piece assembly (4) is mounted on the base (1), and the magnetic short-circuit piece assembly (4) is in contact with the magnetic short-circuit ring.

4. The load switch structure for an electric meter according to claim 1, characterized in that: The support frame (9) is provided with a torque push rod matching hole (91), a magnetic steel matching hole (92) and a dynamic spring base groove (93); the top of the torque push rod (7) matches the torque push rod matching hole (91), the top of the magnetic steel assembly (10) matches the magnetic steel matching hole (92), and the dynamic spring base (21) matches the dynamic spring base groove (93).

5. The load switch structure for an electric meter according to claim 1, characterized in that: The magnetic steel push handle (101) is integrally connected to the magnetic steel assembly (10).

6. The load switch structure for an electric meter according to claim 1, characterized in that: It also comprises a shielding cover (11), wherein the shielding cover (11) is arranged outside the base (1).

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