Novel single-pole double-throw relay

Abstract

The novel single-pole double-throw relay comprises a coil and a permanent magnet, a soft magnet is arranged below the permanent magnet, a left through hole and a right through hole are formed in the soft magnet, and a left push rod ball and a right push rod ball are arranged in the left through hole and the right through hole respectively. A left movable contact piece and a right movable contact piece are arranged below the left push rod ball and the right push rod ball respectively. According to the novel single-pole double-throw relay, the friction of the push rod is reduced, the service life of the relay is prolonged, and the safety performance of the relay is improved. The push rod of the spherical structure enables the relay to be simple in overall structure and easy to manufacture, and manufacturing cost of the relay is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency switches and relays, in particular to a novel single-pole double-throw relay. Background Art

[0002] The RF coaxial switch (relay) is an electrical control device. It is an electrical appliance that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity reaches the specified requirements. It has an interactive relationship between the control system and the controlled system. It is usually used in automated control circuits. It is actually an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit.

[0003] Although there are many types and quantities of relays at present, usually, the RF switch uses a push rod to push the movable conductive piece to contact a pair of connector terminals and connect the RF signal path between the two connector terminals. A common design is to make a seesaw-type soft magnet swing under the action of a pair of electromagnets to push the switch action of the push rod.

[0004] However, the push rods of most existing relays are prone to wear during use, which may cause the relay to malfunction, thereby causing immeasurable safety hazards and affecting the service life of the relay. In addition, due to the existence of the push rod, the structure of the relay is relatively complicated, which makes the manufacturing cost of the relay very high. Utility Model Content

[0005] The purpose of the utility model is to provide a new type of single-pole double-throw relay to solve the problem that the push rods of most existing relays mentioned in the background art are easily worn during use, which may cause the relay to fail, thereby causing immeasurable safety hazards and affecting the service life of the relay. In addition, due to the existence of the push rod, the structure of the relay is relatively complicated, which makes the manufacturing cost of the relay very high.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel single-pole double-throw relay, comprising a coil and a permanent magnet, a soft magnetic body is arranged below the permanent magnet, a left through hole and a right through hole are arranged on the soft magnetic body, a left push rod ball and a right push rod ball are arranged in the left through hole and the right through hole respectively, a limiting ring is arranged around the left push rod ball and the right push rod ball, and a left movable contact piece and a right movable contact piece are arranged below the left push rod ball and the right put rod ball respectively.

[0007] Preferably, the left movable contact piece and the right movable contact piece are supported by a left supporting piece and a right supporting piece respectively.

[0008] Preferably, the left supporting plate and the right supporting plate are respectively connected with a left reaction force spring sheet and a right reaction force spring sheet.

[0009] Preferably, it also includes a base plate and a first contact, a second contact and a third contact arranged on the base plate.

[0010] Preferably, an inverted triangle bracket is provided between the permanent magnet and the soft magnetic body.

[0011] Preferably, one end of the right elastic limiting ring and the left elastic limiting ring are respectively provided with an elastic connecting belt, and the whole of the right elastic limiting ring and the left elastic limiting ring are fixed on the upper surface of the soft magnetic body.

[0012] Compared with the prior art, the utility model has the following beneficial effects: a new type of single-pole double-throw relay:

[0013] The excitation (energization) coil 42 will generate an electromagnetic field H (downward) perpendicular to the transverse magnetic field of the permanent magnet and generate torque on the permanent magnet 41, causing the permanent magnet 41 to rotate clockwise and push the push rod ball 31, so that the movable contact piece 21 moves downward and connects the contacts 11 and 12. Similarly, the excitation (energization) coil 42 generates an electromagnetic field and reverse torque in the opposite direction, causing the permanent magnet 41 to rotate counterclockwise and push the push rod ball 32, so that the movable contact piece 22 moves downward and connects the contacts 11 and 13. The push rod of the relay of the present invention is a round ball, and an elastic limiting ring is arranged around the ball. The elastic limiting ring is connected with an elastic connecting belt, so that the elastic limiting ring can move up and down with the push rod ball, and the push rod ball is covered during the movement, so that the push rod ball will not run away, making it difficult for the relay to have problems, and improving the performance of the relay. The round push rod reduces the friction of the push rod, prolongs the service life of the relay, and improves the safety performance of the relay. The push rod with a spherical structure makes the overall structure of the relay simple and easy to manufacture, thereby reducing the manufacturing cost of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the spherical push rod connection structure in the utility model;

[0016] Figure 3 It is a structural schematic diagram of the soft magnetic body of the utility model. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3 The utility model provides a technical solution: a novel single-pole double-throw relay, including a coil 42 and a permanent magnet 41, a soft magnetic body 40 is arranged below the permanent magnet 41, a left through hole and a right through hole are arranged on the soft magnetic body 40, a left push rod ball 32 and a right push rod ball 31 are arranged in the left through hole and the right through hole respectively, 31 and 32 are push rod balls, which are formed by processing a smooth dielectric material with a certain hardness (such as zirconium oxide, nylon, etc.). 40 is a soft magnetic body (such as electrical pure iron, nickel-iron alloy, etc.).

[0019] The left push rod ball 32 and the right push rod ball 31 are surrounded by a left elastic limiting ring 52 and a right elastic limiting ring 51, and the left elastic limiting ring 52 and the right elastic limiting ring 51 are connected with an elastic connecting belt. The left elastic limiting ring 52 and the right elastic limiting ring 51 are fixed on the upper surface of the soft magnetic body 40, so that the left elastic limiting ring 52 and the right elastic limiting ring 51 can move up and down with the left push rod ball 32 and the right push rod ball 31, and respectively cover the left push rod ball 32 and the right push rod ball 31 during the movement, so that the left push rod ball 32 and the right push rod ball 31 will not run away, so that the relay is not easily damaged, and the performance of the relay is improved. The limiting ring can be annular or any other shape, and the elastic limiting ring is made of elastic material (such as beryllium copper, nylon sheet, etc.).

[0020] A left movable contact piece 22 and a right movable contact piece 21 are respectively disposed below the left putter ball 32 and the right putter ball 31. The left movable contact piece 22 and the right movable contact piece 21 are generally made of elastic conductive metal such as beryllium copper.

[0021] The left movable contact piece 22 and the right movable contact piece 21 are supported by a left supporting piece 23 and a right supporting piece 24 respectively. The left supporting piece 23 and the right supporting piece 24 can be made of engineering plastic or ceramic material.

[0022] The left supporting plate 23 and the right supporting plate 24 are respectively connected with a left reaction force spring piece 25 and a right reaction force spring piece 26 , and the left reaction force spring piece 25 and the right reaction force spring piece 26 can be made of elastic metal (such as beryllium copper).

[0023] The bottom plate and the first contact 11, the second contact 12 and the third contact 13 arranged on the bottom plate, the bottom plate can be selected from PCB, and the first contact 11, the second contact 12 and the third contact 13 are formed on the PCB.

[0024] The permanent magnet 41 (such as NdFeB, SmCo, etc.) is magnetized in a horizontal direction (the solid arrow direction M). An inverted triangle support structure is provided below the permanent magnet 41, so that the permanent magnet has a seesaw-like bistable state. The permanent magnet 41 can also be installed with a rotating shaft to realize a seesaw swinging structure.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel single-pole double-throw relay, comprising a coil (42) and a permanent magnet (41), characterized in that: A soft magnetic body (40) is arranged below the permanent magnet (41), and a left through hole and a right through hole are arranged on the soft magnetic body (40), and a left push rod ball (32) and a right push rod ball (31) are arranged in the left through hole and the right through hole respectively, and a left elastic limiting ring (52) and a right elastic limiting ring (51) are arranged around the left push rod ball (32) and the right push rod ball (31) respectively, and a left movable contact piece (22) and a right movable contact piece (21) are arranged below the left push rod ball (32) and the right push rod ball (31) respectively.

2. A novel single-pole double-throw relay according to claim 1, characterized in that: The left movable contact piece (22) and the right movable contact piece (21) are supported by a left supporting piece (23) and a right supporting piece (24) respectively.

3. A novel single-pole double-throw relay according to claim 2, characterized in that: The left supporting plate (23) and the right supporting plate (24) are respectively connected to a left reaction force spring sheet (25) and a right reaction force spring sheet (26).

4. A novel single-pole double-throw relay according to claim 3, characterized in that: It also includes a base plate and a first contact (11), a second contact (12) and a third contact (13) arranged on the base plate.

5. A novel single-pole double-throw relay according to claim 1, characterized in that: An inverted triangle-shaped bracket is arranged between the permanent magnet (41) and the soft magnetic body (40).

6. A novel single-pole double-throw relay according to claim 1, characterized in that: One end of the left elastic limiting ring (52) and the right elastic limiting ring (51) are respectively provided with an elastic connecting belt, and the left elastic limiting ring (52) and the right elastic limiting ring (51) are integrally fixed on the upper surface of the soft magnetic body (40).

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