Relay contact assembly

Abstract

The utility model discloses a relay contact assembly, and belongs to the technical field of relays. Comprising a shell arranged on the periphery of a relay contact assembly, a relay body is fixedly arranged in the shell and comprises a base, an electromagnet is fixedly installed at the top of the base, a fixing groove is formed in one end of the base, a spring is arranged at the end, away from the fixing groove, of the base, and an armature is fixedly connected to one end of the spring; the top of the armature is provided with an auxiliary switch. The supporting plate is fixed through the fixing groove, the supporting plate is matched with the fixing groove, disassembly and assembly are convenient, the armature is pushed through the auxiliary switch, the armature drives the movable contact, and closing of the movable contact and the static contact can be achieved manually. According to the utility model, the deconstruction design is compact and reasonable, deformation and deviation caused by multiple times of closing of the static contact can be avoided, the static contact can be conveniently replaced, the use process is convenient, the opening and closing conditions of the movable and static contacts can be observed in real time by using the auxiliary switch, and the power-on stability is ensured.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, and more specifically, to a relay contact assembly. Background Technology

[0002] The demand for relays as key electrical control components is constantly increasing, with a wide range of applications including home appliances, industrial control, automobiles, communications, power, energy, security, and aerospace. Their main function is to achieve "automatic and remote" control. With the global economic recovery and continued growth in residents' incomes, traditional downstream markets such as automobiles, home appliances, and industrial control have maintained stable growth. At the same time, the rapid development of emerging industries such as new energy, artificial intelligence (AI), and intelligent manufacturing has also opened up new downstream markets for relays.

[0003] The prior art patent document CN209843618U discloses a contact assembly for an aircraft relay. This device has two fixed plates internally connected to a support frame. A bottom contact block and a top contact block are fixedly connected to opposite sides of the two fixed plates, respectively. Movable blocks, movable cavities, sliding grooves, movable springs, locking pins, and sliders are provided on both sides of the armature. The locking pins can move left and right within the movable cavity due to the elastic force of the movable springs. The sliders and sliding grooves effectively limit their range of motion, preventing them from detaching. Locking holes are provided on the inner walls of both sides of the housing, and these holes are adapted to the locking pins, facilitating quick insertion of the locking pins into the locking holes to fix the armature to the housing and enhance its stability.

[0004] While this method offers many advantages, it still presents the following problems: Firstly, the moving and stationary contacts of the relay contact assembly open and close frequently during use. Secondly, being directly fixed to the mounting plate for extended periods can lead to deformation and misalignment of the stationary contacts, making replacement difficult. Thirdly, the relay contact assembly has locking holes on both the left and right inner walls of the housing, which fit into the locking posts, facilitating quick insertion of the posts and making it difficult to observe the opening and closing of the contacts. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] During use, the moving and stationary contacts of the relay contact assembly open and close frequently. Since it is directly fixed to the mounting plate, long-term use will cause deformation and misalignment of the stationary contacts. Secondly, the relay contact assembly has locking holes on the inner walls of both sides of the housing. The locking holes are adapted to the locking posts, which makes it easy for the locking posts to be quickly inserted into the locking holes, making it difficult to observe the opening and closing of the contacts.

[0007] 2. Technical Solution

[0008] A relay contact assembly includes: a base, a support frame fixedly mounted at one end of the base, a fixing plate fixedly mounted at the end of the base away from the support frame, an electromagnet mounted on the top of the base, a stationary contact fixedly mounted on the top of the support frame, a spring fixedly connected to the top of the fixing plate, an armature fixedly connected to the other end of the spring, and an auxiliary switch mounted on the top of the armature.

[0009] Preferably, a moving contact is fixedly installed at the end of the armature away from the auxiliary switch.

[0010] Preferably, the auxiliary switch includes a limiting plate disposed at its top and bottom, a push rod inserted into the top of the limiting plate, a movable spring sleeved on the surface of the push rod, and a button fixedly connected to the top of the push rod.

[0011] Preferably, the support frame includes a fixing groove disposed at its bottom, the fixing groove being fixed to the base.

[0012] Preferably, a support plate is provided at the top of the fixing groove, and the bottom of the support plate is connected to the fixing groove through a snap-fit.

[0013] Preferably, a spring sheet is provided on the top of the support plate, and the top of the spring sheet is in contact with the stationary contact point.

[0014] 3. Beneficial effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] This utility model provides a fixing groove on the base, and uses a slot structure to fix the bottom of the support plate in the fixing groove, which is convenient for disassembly and replacement. A spring sheet is provided at the connection between the support plate and the stationary contact. The spring sheet can buffer the impact force generated when the moving contact makes contact, thereby stabilizing the position of the stationary contact and avoiding poor contact caused by misalignment between the moving contact and the stationary contact.

[0017] Secondly, an auxiliary switch is provided on the top of the armature. The auxiliary switch extends to the outer surface of the housing. When the moving contact and the stationary contact are closed, the auxiliary switch descends to a certain position. Conversely, the auxiliary switch is in the pop-up state. By observing the position of the auxiliary switch, the open and closed state of the relay contact assembly can be determined. When the relay fails, it can also be manually closed through the auxiliary switch to determine whether the problem is with the contact assembly or the electromagnet. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a relay contact assembly according to the present invention;

[0019] Figure 2 This is a cross-sectional schematic diagram of a relay contact assembly according to the present invention;

[0020] Figure 3 This is an exploded view of an auxiliary switch for a relay contact assembly according to the present invention;

[0021] Figure 4 This is an exploded view of a relay contact assembly bracket according to the present invention.

[0022] 1. Housing; 2. Electromagnet; 3. Base; 4. Fixing plate; 5. Spring; 6. Auxiliary switch; 61. Button; 62. Movable spring; 63. Push rod; 64. Limiting plate; 7. Armature; 8. Moving contact; 9. Stationary contact; 10. Support frame; 101. Spring plate; 102. Support plate; 103. Fixing groove. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figure 1-4 This utility model provides a technical solution:

[0027] A relay contact assembly includes: a base 3, a support frame 10 fixedly mounted at one end of the base 3, a fixing plate 4 fixedly mounted at the end of the base 3 away from the support frame 10, an electromagnet 2 mounted on the top of the base 3, and a stationary contact 9 fixedly mounted on the top of the support frame 10. The stationary contact 9 is made entirely of conductive material to increase the contact area and improve the fault tolerance. A spring 5 is fixedly connected to the top of the fixing plate 4. An armature 7 is fixedly connected to the other end of the spring 5. The spring 5 is used to fix the initial position of the armature 7, so that the magnetic force of the electromagnet 2 and the elastic force of the spring 5 are in a balanced state in the normal state of the relay contact assembly. An auxiliary switch 6 is mounted on the top of the armature 7.

[0028] Furthermore, a hemispherical moving contact 8 is fixedly installed at the end of the armature 7 away from the auxiliary switch 6. The inside of the moving contact 8 is made of conductive material, and the outside is made of insulating material. The conductive material is electrically connected through the insulating material. The insulating material can prevent the generation of an electric arc when the moving contact 8 and the stationary contact 9 are closed, thus protecting the equipment.

[0029] Furthermore, the auxiliary switch 6 includes a limiting plate 64 disposed at its top and bottom, the limiting plate 64 restricting the lower position of the auxiliary switch 6, a push rod 63 is inserted into the top of the limiting plate 64, a movable spring 62 is sleeved on the surface of the push rod 63, and a hemispherical button 61 is fixedly connected to the top of the push rod 63, the radius of the button 61 is larger than the radius of the movable spring 62, and the radius of the movable spring 62 is larger than the radius of the push rod 61.

[0030] Furthermore, the support frame 10 includes a fixing groove 103 disposed at its bottom. The fixing groove 103 is fixed on the base 3. The fixing groove 103 is a cross-shaped groove, which increases the contact surface for installation and makes the installation of the support frame 10 more stable.

[0031] Furthermore, a support plate 102 is provided on the top of the fixing groove 103, and the bottom of the support plate 102 is connected to the fixing groove 103 by a snap, which facilitates the disassembly and replacement of the support plate 102, thereby facilitating the replacement of the stationary contact 9.

[0032] Furthermore, a spring plate 101 is provided on the top of the support plate 102. The top of the spring plate 101 is in contact with the stationary contact 9. The spring plate 101 can buffer the impact force generated when the moving contact 8 makes contact, thereby stabilizing the position of the stationary contact 9 and avoiding poor contact caused by misalignment between the moving contact 8 and the stationary contact 9.

[0033] Working principle: When this device is needed to automatically control the circuit, the direction of the current through electromagnet 2 is changed, thus changing the direction of the magnetic field generated by electromagnet 2. This change in magnetic field direction causes an imbalance between the elastic force of spring 5 and the magnetic force of electromagnet 2. At this time, spring 5 deforms under the force, pushing or pulling armature 5, thereby moving armature 5. Armature 5 causes moving contact 8 to rise or fall. When it rises, it opens at stationary contact 9, and vice versa. The force generated by closing is buffered by spring plate 101, protecting stationary contact 9 from deformation and displacement. When closed, armature 5 simultaneously drives push rod 63 to fall, thereby lowering auxiliary switch 6 to a certain position. Therefore, the contact closure status can be determined by auxiliary switch 6. When the device fails and stationary contact 9 needs to be replaced, the support frame 10 can be disassembled.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A relay contact assembly, characterized in that, include: A base (3) is provided with a support frame (10) fixed at one end of the base (3). A fixing plate (4) is fixed at the end of the base (3) away from the support frame (10). An electromagnet (2) is provided on the top of the base (3). A stationary contact (9) is fixedly installed on the top of the support frame (10). A spring (5) is fixedly connected to the top of the fixing plate (4). An armature (7) is fixedly connected to the other end of the spring (5). An auxiliary switch (6) is provided on the top of the armature (7).

2. A relay contact assembly according to claim 1, characterized in that: The armature (7) has a moving contact (8) fixedly installed at the end away from the auxiliary switch (6).

3. A relay contact assembly according to claim 2, characterized in that: The auxiliary switch (6) includes a limiting plate (64) disposed at its top and bottom. A push rod (63) is inserted into the top of the limiting plate (64). A movable spring (62) is sleeved on the surface of the push rod (63). A button (61) is fixedly connected to the top of the push rod (63).

4. A relay contact assembly according to claim 3, characterized in that: The support frame (10) includes a fixing groove (103) disposed at its bottom, the fixing groove (103) being fixed on the base (3).

5. A relay contact assembly according to claim 4, characterized in that: The top of the fixing groove (103) is provided with a support plate (102), and the bottom of the support plate (102) is connected to the fixing groove (103) by a snap.

6. A relay contact assembly according to claim 5, characterized in that: The top of the support plate (102) is provided with a spring sheet (101), and the top of the spring sheet (101) is in contact with the stationary contact (9).

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