Relay with anti-vibration structure

Abstract

The application relates to the technical field of power electronic component manufacturing, and discloses a relay with an anti-vibration structure, which comprises a base, a plurality of pins arranged on the base and used for wiring, a shell fixed on the base, a fixing frame fixed on the base and located in the shell, an electromagnet installed on the fixing frame, a fixed contact fixed on the fixing frame, conductive contacts arranged on the fixed contact, a movable frame slidingly arranged on the fixing frame, a movable contact fixed on the movable frame, and conductive contacts arranged on the movable contact. The first tension spring is matched with the limiting groove and the groove of the movable frame, and the blocking limiting component is additionally arranged in the shell, so that the mechanical structure and the physical isolation form double protection, the movable contact is prevented from being mistakenly touched due to vibration, the contact is accurately contacted when the electromagnet is driven, and the action reliability of the relay in a complex vibration environment is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of power electronic component manufacturing technology, and in particular to relays with vibration-resistant structures. Background Technology

[0002] A relay is an electrical control device whose core function is to control the switching on and off of high-current or high-voltage circuits through small current or low-voltage signals, thereby realizing automatic adjustment, safety protection, and logic control of the circuit.

[0003] In existing technologies, the moving contact in a relay is made of an elastic metal sheet. When the electromagnet is energized, the magnetic force overcomes the elasticity of the sheet, causing the moving and stationary contacts to come into contact. For relays with this structure, since the moving contact relies on its own elasticity to maintain separation from the stationary contact, when the relay is subjected to vibration or mechanical impact, the elastic metal sheet is prone to high-frequency shaking or even resonance, causing the moving contact to momentarily mis-contact the stationary contact in an unexcited state. This mis-contact can trigger abnormal switching of the control circuit, causing malfunctions of the controlled equipment or signal interference. In summary, traditional relays have poor vibration resistance and are prone to malfunctions in vibration environments, making it difficult to meet the high reliability requirements of power electronic equipment, industrial control devices, new energy equipment, intelligent control systems, and other scenarios, thus restricting the overall performance improvement of power electronic components.

[0004] Therefore, it is necessary to design relays with vibration-resistant structures to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a high vibration-resistant relay suitable for power electronic systems, high-end equipment, and intelligent manufacturing equipment, to solve the problems of contact mis-touch and control failure under vibration environment, and to improve the stability and reliability of power electronic components under complex working conditions.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A relay with an anti-vibration structure includes a base, a housing fixed on the base, a fixed frame fixed on the base, an electromagnet mounted on the fixed frame, a fixed contact fixed on the fixed frame, a movable frame slidably disposed on the fixed frame, a movable contact fixed on the movable frame, the movable contact being directly opposite the fixed contact, the fixed frame and the movable frame being connected by a first tension spring, and a magnetic sheet fixed on the movable frame, the magnetic sheet being directly opposite the electromagnet.

[0007] As a preferred embodiment of the present invention, a limiting block is fixed on the movable frame, a limiting groove is formed on the fixed frame, the limiting block is slidably disposed in the limiting groove, and two grooves are formed on the movable frame, both of which are engaged with the fixed frame.

[0008] As a preferred embodiment of the present invention, a limiting component is provided inside the outer shell to limit the movement of the movable contact piece. The limiting component includes a first limiting rib, which is fixed inside the outer shell. A stop block is slidably sleeved on the first limiting rib. A limiting plate is fixed at the end of the first limiting rib. A second limiting rib is fixed on the side of the first limiting rib, and the second limiting rib is perpendicular to the first limiting rib. A movable block is slidably sleeved on the second limiting rib. The movable block is connected to the first limiting rib via a second tension spring. The movable block and the stop block are connected via a connecting plate. One end of the connecting plate is rotatably connected to the stop block, and the other end of the connecting plate is rotatably connected to the movable block. The housing contains a drive assembly for driving the stop to move.

[0009] As a preferred embodiment of the present invention, the stop is made of insulating material.

[0010] As a preferred embodiment of the present invention, when the fixed contact piece and the movable contact piece are in contact, the movable contact piece will not contact the first limiting rib.

[0011] As a preferred embodiment of the present invention, the driving assembly includes a movable frame and a rotating rod. The movable frame is slidably disposed inside the housing. The movable frame is made of magnetic material and is positioned directly opposite the electromagnet. A fixing rod is fixed to the side of the movable frame, and the fixing rod has a U-shaped structure. The rotating rod is fixed inside the housing. A swing plate is rotatably sleeved on the rotating rod. An opening is opened at the top of the swing plate, and the fixing rod is placed in the opening. A push rod is fixed to the side of the movable block, and the end of the push rod away from the movable block extends to a position directly opposite the swing plate.

[0012] As a preferred embodiment of the present invention, guide blocks are fixed at both ends of the movable frame, and each guide block is provided with a groove. Two opposing limiting ribs are fixed inside the outer shell, and the two limiting ribs slide in the two grooves respectively.

[0013] As a preferred embodiment of the present invention, the opening has an oval shape.

[0014] The present invention has the following beneficial effects: 1. By combining the first tension spring with the limiting groove and recess of the movable frame, and the stop block limiting component added inside the housing, a dual protection of mechanical structure and physical isolation is formed, which effectively avoids accidental contact of the moving contact piece caused by vibration, while ensuring accurate contact of the contacts when the electromagnet is driven, and significantly improves the reliability of the relay in complex vibration environment. 2. Using an electromagnet to attract the moving frame as a power source, the linear motion of the electromagnet is converted into the lateral movement of the stop block through the lever transmission of the fixed rod, the swing plate and the push rod, realizing the dynamic isolation and release between the stop block and the moving contact plate. The structure is compact and the transmission efficiency is high, avoiding the complexity and failure risk introduced by additional drive components. 3. By using the sliding constraint of the guide block and the limiting rib, the elastic reset of the movable block and the second tension spring, and the rotational connection of the connecting plate, the movement trajectory of each component is ensured to be precise and controllable, eliminating shaking and interference problems. At the same time, the design of the magnetic moving frame and the oval opening further enhances the fault tolerance of the transmission process and ensures the long-term stability of the relay. 4. The relay proposed in this invention has advantages such as high vibration resistance, high reliability, and long life, meeting the stringent requirements of high-end equipment and intelligent manufacturing fields for control electrical appliances. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the relay with anti-vibration structure proposed in this invention; Figure 2 This is a planar sectional view of the relay with an anti-vibration structure proposed in this invention; Figure 3 Schematic diagram of the fixed frame and the movable frame Figure 1 ; Figure 4 for Figure 3 Enlarged view of the structure at point A; Figure 5 Schematic diagram of the fixed frame and the movable frame Figure 2 ; Figure 6 This is a structural diagram of the fixed frame, the movable frame, and the first tension spring; Figure 7 This is a structural diagram of the fixed contact, the movable contact, and the limiting assembly. Figure 8 This is a schematic diagram of the limit component.

[0016] In the diagram: 1. Base; 2. Outer shell; 21. Limiting rib; 3. Fixing frame; 31. Limiting groove; 32. Fixed contact piece; 4. Electromagnet; 51. Movable frame; 511. Limiting block; 512. Groove; 52. Moving contact piece; 53. First tension spring; 61. First limiting rib; 611. Limiting plate; 62. Stop block; 63. Second limiting rib; 64. Movable block; 641. Push rod; 65. Second tension spring; 66. Connecting plate; 71. Moving frame; 711. Fixing rod; 72. Guide block; 721. Channel; 73. Rotating rod; 74. Swing piece; 741. Opening. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] Example 1: This example shows a relay with an anti-vibration structure disclosed in this embodiment, referring to... Figure 1-6 The system includes a base 1 with several pins for wiring, a housing 2 fixed to the base 1, a mounting bracket 3 fixed to the base 1 (located inside the housing 2), an electromagnet 4 mounted on the mounting bracket 3, a fixed contact 32 fixed to the mounting bracket 3 with conductive contacts, a movable bracket 51 slidably mounted on the mounting bracket 3, a movable contact 52 fixed to the movable bracket 51 with conductive contacts, the movable contact 52 facing the fixed contact 32, a limit block 511 fixed to the movable bracket 51, and a limit groove 31 formed on the mounting bracket 3. The limit block 511 slidably moves within the limit groove 31, providing a limit for the movable bracket 51 and ensuring the stability of its movement, allowing the movable contact 52 to maintain stable contact with the fixed contact. The movable bracket 51 has two... Two grooves 512 are both engaged on the fixed frame 3. The arrangement of the two grooves 512 also provides constraint for the movable frame 51, further ensuring the stability of the movement of the movable frame 51. The fixed frame 3 and the movable frame 51 are connected by a first tension spring 53. Under the elastic force of the first tension spring 53, the movable frame 51 always tends to move away from the fixed frame 3. This makes the moving contact 52 and the fixed contact 32 separate from each other in the initial state. A magnetic sheet is fixed on the movable frame 51 and is positioned facing the electromagnet 4. When the electromagnet 4 is energized, the electromagnet 4 generates magnetic force and attracts the magnetic sheet. This allows the movable frame 51 to approach the electromagnet 4. The magnetic sheet eventually attracts the electromagnet 4. In this case, the conductive contact on the moving contact 52 contacts the conductive contact on the fixed contact 32, realizing the control of the circuit or signal.

[0019] The relay proposed in this invention replaces the traditional spring structure with a first tension spring 53. The stable elastic force of the tension spring ensures that the moving contact 52 and the fixed contact 32 remain reliably separated in the initial state, effectively overcoming the risk of accidental contact caused by vibration. At the same time, the sliding cooperation between the limiting groove 31 and the limiting block 511, as well as the double constraint design of the movable frame 51 with double grooves 512 engaging with the fixed frame 3, significantly improves the anti-shaking ability of the movable frame 51, ensuring accurate and stable contact between the moving contact 52 and the fixed contact 32 when the electromagnet 4 is driven. Thus, while maintaining the basic functions of the relay, its vibration resistance and operational reliability are greatly enhanced.

[0020] Example 2: Based on Example 1, this example discloses a relay with an anti-vibration structure, such as... Figure 4-8As shown, a limiting component is provided inside the housing 2 to limit the movement of the moving contact 52. The limiting component includes a first limiting rib 61, which is fixed inside the housing 2. A stop 62 is slidably mounted on the first limiting rib 61. In the initial state, the stop 62 is located between the fixed contact 32 and the moving contact 52. At this time, due to the blocking effect of the stop 62, the fixed contact 32 and the moving contact 52 cannot contact each other. Even if the relay is subjected to vibration, the fixed contact 32 and the moving contact 52 will not accidentally contact each other. A limiting plate 611 is fixed at the end of the first limiting rib 61. The limiting plate 611 limits the stop 62 and prevents the stop 62 from falling off the first limiting rib 61. It is worth noting that when the fixed contact 32 and the moving contact 52 are in contact, the moving contact 52 will not contact the first limiting rib 61. The purpose of this design is to avoid To prevent motion interference between the first limiting rib 61 and the movable contact piece 52, a second limiting rib 63 is fixed to the side of the first limiting rib 61, and the second limiting rib 63 is perpendicular to the first limiting rib 61. A movable block 64 is slidably sleeved on the second limiting rib 63. The movable block 64 is connected to the first limiting rib 61 through a second tension spring 65. Under the elastic force of the second tension spring 65, the movable block 64 always tends to move closer to the first limiting rib 61. The movable block 64 is connected to the stop block 62 through a connecting plate 66. One end of the connecting plate 66 is rotatably connected to the stop block 62, and the other end of the connecting plate 66 is rotatably connected to the movable block 64. The connecting plate 66 plays a linkage role between the stop block 62 and the movable block 64. When the movable block 64 moves, the movable block 64 can pull the stop block 62 to move through the connecting plate 66.

[0021] A drive assembly is installed inside the outer casing 2 to drive the stop 62 to move. The drive assembly includes a movable frame 71 and a rotating rod 73. The movable frame 71 is slidably disposed inside the outer casing 2. The movable frame 71 is made of magnetic material and is positioned directly opposite the electromagnet 4. Guide blocks 72 are fixed at both ends of the movable frame 71, and each guide block 72 has a groove 721. Two opposing limiting ribs 21 are fixed inside the outer casing 2. The two limiting ribs 21 slide in the two grooves 721 respectively. The guide 721 is configured to provide a limit for the movable frame 71 to prevent the movable frame 71 from shaking. A fixing rod 711 is fixed to the side of the movable frame 71, and the fixing rod 711 has a U-shaped structure. The rotating rod 73 is fixed inside the outer shell 2. A swing plate 74 is rotatably sleeved on the rotating rod 73. An opening 741 is opened at the top of the swing plate 74, and the opening 741 has an oval structure. The fixing rod 711 is placed in the opening 741. A push rod 641 is fixed to the side of the movable block 64. The end of the push rod 641 away from the movable block 64 extends to a position directly opposite the swing plate 74.

[0022] In the initial state, such as Figure 3As shown, the stop block 62 is located between the fixed contact 32 and the moving contact 52. At this time, the stop block 62 provides constraint to the moving contact 52, preventing it from contacting the fixed contact and avoiding accidental contact. When the electromagnet 4 is energized, it attracts the movable frame 71 made of magnetic material, causing the movable frame 71 to adhere to the electromagnet 4. When the movable frame 71 moves, it drives the fixed rod 711 to move. The movement of the fixed rod 711 drives the swing plate 74 to rotate around the rotating rod 73. Figure 4 As shown, since the rotating rod 73 is located near the top of the swing plate 74, when the top of the swing plate 74 rotates under the action of the moving frame 71, the bottom of the swing plate 74 can rotate a wider range. During this process, the swing plate 74 pushes the push rod 641, causing the push rod 641 to move the movable block 64. When the movable block 64 moves, it can drive the stop block 62 to move through the connecting plate 66. When the moving frame 71 is attracted to the electromagnet 4, the stop block 62 moves completely out from between the moving contact plate 52 and the fixed contact plate 32. In this case, the stop block 62 no longer constrains the moving contact plate 52. Subsequently, the fixed frame 3 is attracted to the electromagnet 4, so that the moving contact plate 52 and the fixed contact plate 32 come into contact with each other.

[0023] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A relay with an anti-vibration structure, characterized in that, Includes a base (1), on which a shell (2) is fixed, on which a fixed frame (3) is fixed, on which an electromagnet (4) is installed, on which a fixed contact piece (32) is fixed, on which a movable frame (51) is slidably arranged, on which a movable contact piece (52) is fixed, the movable contact piece (52) is positioned opposite to the fixed contact piece (32), the fixed frame (3) and the movable frame (51) are connected by a first tension spring (53), and a magnetic piece is fixed on the movable frame (51), the magnetic piece being positioned opposite to the electromagnet (4).

2. The relay with an anti-vibration structure according to claim 1, characterized in that, The movable frame (51) is fixed with a limiting block (511), and the fixed frame (3) is provided with a limiting groove (31). The limiting block (511) is slidably disposed in the limiting groove (31). The movable frame (51) is provided with two grooves (512), and both grooves (512) are locked on the fixed frame (3).

3. The relay with an anti-vibration structure according to claim 1, characterized in that, The housing (2) is provided with a limiting component inside to limit the moving contact piece (52). The limiting component includes a first limiting rib (61), which is fixed inside the housing (2). A stop block (62) is slidably sleeved on the first limiting rib (61). A limiting plate (611) is fixed at the end of the first limiting rib (61). A second limiting rib (63) is fixed on the side of the first limiting rib (61). (63) is perpendicular to the first limiting rib (61), and a movable block (64) is slidably sleeved on the second limiting rib (63). The movable block (64) is connected to the first limiting rib (61) through a second tension spring (65). The movable block (64) is connected to the stop block (62) through a connecting plate (66). One end of the connecting plate (66) is rotatably connected to the stop block (62), and the other end of the connecting plate (66) is rotatably connected to the movable block (64). The housing (2) is provided with a drive component inside, which is used to drive the stop (62) to move.

4. The relay with an anti-vibration structure according to claim 3, characterized in that, The stop (62) is made of insulating material.

5. The relay with an anti-vibration structure according to claim 3, characterized in that, When the fixed contact (32) comes into contact with the movable contact (52), the movable contact (52) will not come into contact with the first limiting rib (61).

6. The relay with an anti-vibration structure according to claim 1, characterized in that, The drive assembly includes a movable frame (71) and a rotating rod (73). The movable frame (71) is slidably disposed inside the outer shell (2). The movable frame (71) is made of magnetic material and is positioned directly opposite the electromagnet (4). A fixing rod (711) is fixed to the side of the movable frame (71), and the fixing rod (711) has a U-shaped structure. The rotating rod (73) is fixed inside the outer shell (2). A swing plate (74) is rotatably sleeved on the rotating rod (73). An opening (741) is opened at the top of the swing plate (74). The fixing rod (711) is placed in the opening (741). A push rod (641) is fixed to the side of the movable block (64). The end of the push rod (641) away from the movable block (64) extends to a position directly opposite the swing plate (74).

7. The relay with an anti-vibration structure according to claim 6, characterized in that, Both ends of the movable frame (71) are fixed with guide blocks (72), and each guide block (72) has a groove (721). Inside the outer shell (2), there are two opposing limiting ribs (21), and the two limiting ribs (21) slide in the two grooves (721) respectively.

8. The relay with an anti-vibration structure according to claim 6, characterized in that, The opening (741) has an oval shape.

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