Short-circuit-current-resistant conversion type magnetic latching relay

Abstract

The utility model relates to the technical field of relays, in particular to a conversion type magnetic latching relay capable of resisting short-circuit current. Comprising a base, and further comprises a shell arranged on the upper surface of the base; the connecting seat is fixedly connected to the upper surface of the base; the first yoke and the second yoke are both located above the base; the framework is located above the base, and a through hole allowing the first yoke and the second yoke to move is formed in the framework in a penetrating mode; and the two fixing sheets are arranged on the upper surface of the base. According to the utility model, through the arrangement of the movable spring assembly, the relay can realize the same load capacity as a normally open point and a normally closed point, and meanwhile, by utilizing the Lorentz force principle, the structure has the capability of resisting short-circuit current, so that the whole relay also has the capability of resisting short-circuit current; therefore, the relay can be effectively prevented from being short-circuited after being used for a long time, and the normal use effect of the relay is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, and more specifically, to a conversion type magnetic latching relay resistant to short-circuit current. Background Art

[0002] A relay, also known as an electric relay, is an electronic control device. It has a control system and a controlled system and is usually applied to an automatic control circuit. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays roles such as automatic regulation, safety protection, and circuit conversion in the circuit. In daily life, a conversion type magnetic latching relay resistant to short-circuit current is needed.

[0003] The reed switches used in traditional relays cannot achieve the same load capacity for normally open and normally closed points. At the same time, the reed switches used in traditional relays do not have the ability to resist short-circuit current. This will cause situations such as short circuits after long-term use of traditional relays, thus affecting the normal use effect of the relays, and also increasing the usage cost of users, reducing the practicability of the relays.

[0004] Therefore, those skilled in the art have provided a conversion type magnetic latching relay resistant to short-circuit current to solve the problems raised in the above background art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a conversion type magnetic latching relay resistant to short-circuit current, including a base, and further including:

[0006] A housing, arranged on the upper surface of the base;

[0007] A connecting seat, fixedly connected to the upper surface of the base;

[0008] A first yoke and a second yoke, both located above the base;

[0009] A skeleton, located above the base, and a through hole for the first yoke and the second yoke to move is penetrated and opened inside the skeleton;

[0010] Two fixing pieces, both arranged on the upper surface of the base, and clamping grooves for clamping the fixing pieces are opened on both sides of the inner wall of the base;

[0011] A moving reed assembly, arranged above the base, and used to achieve the same load capacity for the normally open and normally closed points of the relay, and at the same time enable the relay to have the ability to resist short-circuit current;

[0012] The permanent magnet is arranged inside the base. Rotating shafts are fixedly connected to both sides of the outer wall of the permanent magnet. Activity grooves for the rotating shafts to move are provided on both sides of the inner wall of the base. A clamping groove for clamping the permanent magnet is provided on the upper surface of the connecting seat.

[0013] As a further improvement of this technical solution, guiding grooves for the first yoke and the second yoke to move are provided on both sides of the inner wall of the base. Clamping grooves for clamping the first yoke are penetratingly provided on both sides of the inner wall of the base.

[0014] As a further improvement of this technical solution, a T-shaped plate is fixedly connected to the outside of the first yoke. A clamping groove for clamping the T-shaped plate is provided inside the second yoke.

[0015] As a further improvement of this technical solution, static contacts are provided on the opposite sides of the two fixing pieces.

[0016] As a further improvement of this technical solution, the moving spring assembly includes a mounting plate arranged on the upper surface of the base. Clamping grooves for clamping the mounting plate are provided on both sides of the inner wall of the base. Two moving spring pieces are fixedly connected to the outside of the mounting plate. Moving contacts are provided on the outside of the two moving spring pieces. A clamping groove for clamping the moving spring pieces is provided on the upper surface of the connecting seat.

[0017] As a further improvement of this technical solution, bumps are provided on the outside of both the first yoke and the second yoke. A clamping groove for clamping the bumps is provided on the inner wall of the through hole.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] In this conversion type magnetic latching relay with short-circuit current resistance, through the provided moving spring assembly, the relay can achieve the same load capacity for normally open and normally closed points. At the same time, by utilizing the Lorentz force principle, the moving spring assembly can have the ability to resist short-circuit current, so that the entire relay can have the ability to resist short-circuit current. Furthermore, it can effectively protect the relay against short circuit, thereby effectively preventing the relay from experiencing short circuit and other situations after long-term use, which affects the normal use effect of the relay. It effectively extends the service life of the relay, reduces the maintenance cost of users, improves the practicality of the relay, and has low cost and simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic three-dimensional structure diagram of the whole of the present utility model;

[0021] Figure 2 It is a schematic three-dimensional structure diagram after the shell of the present utility model is disassembled;

[0022] Figure 3Schematic diagram of the disassembled three-dimensional structure of the present utility model;

[0023] Figure 4 Schematic diagram of the sectional three-dimensional structure of the base in the present utility model;

[0024] Figure 5 Schematic diagram of the three-dimensional structure of the moving spring assembly after disassembly in the present utility model;

[0025] Figure 6 Schematic diagram of the three-dimensional structure of the T-shaped plate in the present utility model.

[0026] The meanings of the various labels in the figure are as follows:

[0027] 1. Base; 2. Outer shell; 3. Skeleton; 4. Fixed piece; 5. Mounting plate; 6. Moving spring piece; 7. First yoke; 8. Second yoke; 9. Protrusion; 10. Static contact; 11. Moving contact; 12. Magnet; 13. Rotating shaft; 14. Through hole; 15. Connecting seat; 16. T-shaped plate. Specific implementation mode

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figure 1 - Figure 6 As shown, this embodiment provides a conversion type magnetic latching relay with short-circuit current resistance, including a base 1, and further including:

[0030] An outer shell 2, disposed on the upper surface of the base 1;

[0031] A connecting seat 15, fixedly connected to the upper surface of the base 1;

[0032] A first yoke 7 and a second yoke 8, both located above the base 1;

[0033] A skeleton 3, located above the base 1, and a through hole 14 for the movement of the first yoke 7 and the second yoke 8 is penetrated through the inside of the skeleton 3;

[0034] Two fixed pieces 4, both disposed on the upper surface of the base 1, and clamping grooves for clamping the fixed pieces 4 are provided on both sides of the inner wall of the base 1;

[0035] A moving spring assembly, disposed above the base 1, and used to achieve the same load capacity for the normally open and normally closed points of the relay, and at the same time enable the relay to have the ability to resist short-circuit current;

[0036] The magnet 12 is arranged inside the base 1. Rotating shafts 13 are fixedly connected to both sides of the outer wall of the magnet 12. Activity grooves for the rotating shafts 13 to move are provided on both sides of the inner wall of the base 1. A clamping groove for clamping the magnet 12 is provided on the upper surface of the connecting seat 15.

[0037] The above working principle: Through the setting of the moving reed assembly, the relay can achieve the same load capacity for normally open and normally closed points. At the same time, using the Lorentz force principle, the moving reed assembly can have the ability to resist short-circuit current, so that the whole relay can have the ability to resist short-circuit current, and then can effectively protect the relay against short circuit. Thus, it can effectively prevent the relay from short-circuiting and other situations after long-term use, affecting the normal use effect of the relay, effectively extending the service life of the relay, reducing the maintenance cost of users, improving the practicality of the relay, and having a low cost and a simple structure.

[0038] In order to conveniently fix and install both the first yoke 7 and the second yoke 8 on the base 1, guiding grooves for the first yoke 7 and the second yoke 8 to move are provided on both sides of the inner wall of the base 1. Clamping grooves for clamping the first yoke 7 are penetrated and provided on both sides of the inner wall of the base 1. When installing the first yoke 7 and the second yoke 8, first insert the second yoke 8 into the guiding grooves provided on both sides of the inner wall of the base 1, and then insert the first yoke 7 into the guiding grooves provided on both sides of the inner wall of the base 1. When the first yoke 7 is inserted into the clamping grooves provided on both sides of the inner wall of the base 1, the first yoke 7 and the second yoke 8 can be fixedly installed on the base 1.

[0039] Considering that when both the first yoke 7 and the second yoke 8 are installed on the base 1, the stability of the connection between the first yoke 7 and the second yoke 8 needs to be further improved. Therefore, a T-shaped plate 16 is fixedly connected to the outside of the first yoke 7, and a clamping groove for clamping the T-shaped plate 16 is provided inside the second yoke 8. When the second yoke 8 is inserted into the guiding grooves on both sides of the inner wall of the base 1, then insert the first yoke 7 into the guiding grooves on both sides of the inner wall of the base 1 synchronously. At this time, the first yoke 7 will also drive the T-shaped plate 16 to move synchronously. When the T-shaped plate 16 is inserted into the clamping groove inside the second yoke 8, the stability of the connection between the first yoke 7 and the second yoke 8 can be improved through the T-shaped plate 16. At this time, the stability of the installation between the first yoke 7, the second yoke 8, the skeleton 3 and the base 1 can be further improved.

[0040] In order to ensure that the relay can achieve the same load capacity for normally open and normally closed points, so as to ensure the normal use of the relay, static contacts 10 are provided on the opposite sides of the two fixing plates 4. Through the setting of the static contacts 10, the magnetic circuit contact between the moving reed assembly and the fixing plates 4 can be achieved, so as to ensure that the relay can achieve the same load capacity for normally open and normally closed points.

[0041] In order to enable the relay to have the ability to withstand short-circuit current, the moving spring assembly includes a mounting plate 5 provided on the upper surface of the base 1. Clamping grooves for clamping the mounting plate 5 are formed on both sides of the inner wall of the base 1. Two moving spring pieces 6 are fixedly connected to the outside of the mounting plate 5. Moving contacts 11 are provided outside the two moving spring pieces 6. A clamping groove for clamping the moving spring piece 6 is formed on the upper surface of the connecting seat 15. Through the arrangement of the two moving spring pieces 6, the moving contacts 11 and the mounting plate 5, the load capacity of normally open and normally closed points can be the same. At the same time, by using the Lorentz force principle, the structure can have better ability to withstand short-circuit current, so that the relay can also have better ability to withstand short-circuit current, and further effectively prevent the relay from short-circuiting and other situations, affecting the normal use effect of the relay.

[0042] In addition, in order to further improve the connection stability between the first yoke 7 and the second yoke 8 and the skeleton 3, convex blocks 9 are provided on the outside of the first yoke 7 and the second yoke 8. A clamping groove for clamping the convex block 9 is formed on the inner wall of the through hole 14. When the skeleton 3 is sleeved outside the first yoke 7 and the second yoke 8, the convex blocks 9 on the outside of the first yoke 7 and the second yoke 8 will be synchronously inserted into the clamping grooves formed on the inner wall of the through hole 14. At this time, the connection stability between the first yoke 7 and the second yoke 8 and the skeleton 3 can be effectively improved through the convex blocks 9.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A short-circuit current resistant switching magnetic latching relay, comprising a base (1), characterized in that: Also includes: A housing (2) arranged on the upper surface of the base (1); A connecting seat (15) fixedly connected to the upper surface of the base (1); The first yoke (7) and the second yoke (8) are both located above the base (1); A frame (3) is located above the base (1), and a through hole (14) is provided inside the frame (3) for the first yoke (7) and the second yoke (8) to move. Two fixing plates (4) are both arranged on the upper surface of the base (1), and both sides of the inner wall of the base (1) are provided with clamping grooves for clamping the fixing plates (4); A dynamic spring assembly is arranged above the base (1) and is used to achieve the same load capacity of the normally open and normally closed points of the relay, while enabling the relay to have the ability to resist short-circuit current; The magnetic steel (12) is arranged inside the base (1), and the outer wall of the magnetic steel (12) is fixedly connected to the rotating shaft (13) on both sides, and the inner wall of the base (1) is provided with movable grooves for the rotating shaft (13) to move, and the upper surface of the connecting seat (15) is provided with a clamping groove for clamping the magnetic steel (12).

2. A short-circuit current resistant switching magnetic latching relay according to claim 1, characterized in that: Both sides of the inner wall of the base (1) are provided with guide grooves for the first yoke (7) and the second yoke (8) to move, and both sides of the inner wall of the base (1) are provided with clamping grooves for clamping the first yoke (7).

3. The short-circuit current resistant switching magnetic latching relay according to claim 1, characterized in that: The outside of the first yoke (7) is fixedly connected to a T-shaped plate (16), and the inside of the second yoke (8) is provided with a clamping groove for clamping the T-shaped plate (16).

4. The short-circuit current resistant switching magnetic latching relay according to claim 1, characterized in that: The two fixed sheets (4) are each provided with a static contact point (10) on one opposite side thereof.

5. The short-circuit current resistant switching magnetic latching relay according to claim 1, characterized in that: The movable spring assembly comprises a mounting plate (5) arranged on the upper surface of a base (1), and both sides of the inner wall of the base (1) are provided with clamping grooves for clamping the mounting plate (5), the outside of the mounting plate (5) is fixedly connected with two movable spring leaves (6), the outside of the two movable spring leaves (6) are provided with movable contacts (11), and the upper surface of the connecting seat (15) is provided with a clamping groove for clamping the movable spring leaves (6).

6. The short-circuit current resistant switching magnetic latching relay according to claim 1, characterized in that: The first yoke (7) and the second yoke (8) are both provided with protrusions (9) on their exteriors, and the inner wall of the through hole (14) is provided with a clamping groove for clamping the protrusions (9).

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